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Sample records for schizolobium amazonicum huber

  1. Efeito do espaçamento e do uso de leguminosas de cobertura no manejo de plantas invasoras em reflorestamento de Schizolobium amazonicum Huber ex. Ducke (paricá)

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    Alvino-Rayol, Fabrízia de Oliveira; Rosa, Leonilde dos Santos; Rayol, Breno Pinto

    2011-01-01

    A infestação crescente de plantas invasoras em áreas de cultivos é um dos fatores que mais afetam os reflorestamentos na Amazônia, causando decréscimos na produtividade devido à competição direta pelos fatores de produção. Tendo isso em vista, este trabalho objetivou avaliar o efeito de espaçamentos (4x2 m, 4x4 m e 4x6 m) e do uso de leguminosas de cobertura (Cajanus cajan e Canavalia ensiformis) no controle da matocompetição em plantio de Schizolobium amazonicum Huber ex. Ducke (paricá). As ...

  2. VALIAÇÃO DE PLANTIOS DE PARICÁ (Schizolobium parahyba var. amazonicum (Huber ex Ducke Barneby DE DIFERENTES IDADES E SISTEMAS DE CULTIVO NO MUNICÍPIO DE AURORA DO PARÁ - PA (BRASIL

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    Iracema Maria Castro Coimbra Cordeiro

    2015-01-01

    Full Text Available This work aimed to study the behavior of the species Schizolobium parahyba var. amazonicum ( Huber ex Ducke Barneby (In the Portuguese language ‘Paricá’ at different ages and cultivation systems in Aurora do Pará (Pará state, Brazil. The experiment was carried out in the experimental territory of ‘Tramontina Belém S.A. company’ (2°10’00”s; 47°32’00”w, using a thoroughly random statistical outline with subdivided plots. There were selected six plantation forests of Paricá: 1- agroforestry system of Paricá and Curauá ( Ananas comosus var. erectifolius (SAFpc; 2- monoespecific plantation of Paricá (MONp; 3- agroforestry system with Paricá, freijo ( Cordia goeldiana and curauá (SAFpfc; 4- consortium of Paricá and Freijó (CONpf; 5- agroforestry system with Paricá, Freijo, Mogno and Curaua (SAFpfmc; 6- Consortium of Paricá, Magno and Freijo (CONpmf. The plot size was 18m x 24m with four repetitions per treatment, amounting for 28 plots and 10.368 m 2 of experimental area. The numbers used as reference to evaluate the growth of Paricá were height (H and breast height diameter (DAP. Based on those values the average increments per year were calculated in DAP (IMAdap, H (IMAalt and volume (V; The data was submitted a Variance Analysis and the average compared through Student Newman Keuls test (SNK, at 95% probability level. The results showed that Paricá and Curaua, if associated, presented statistically higher numbers in height and diameter at breast height, increment and volume, if compared to same age treatments in the absence of the agricultural species.

  3. Respostas de plantas de Schizolobium amazonicum [S. parahyba var. amazonicum] e Schizolobium parahyba [Schizolobium parahybum] à deficiência hídrica Responses of Schizolobium amazonicum [S. parahyba var. Amazonicum] and Schizolobium parahyba [Schizolobium parahybum] plants to water stress

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    Cláudio José Reis de Carvalho

    2005-12-01

    Full Text Available Plantas jovens de S. amazonicum (paricá e S. parahyba (guapuruvu foram submetidas a dois ciclos de deficiência hídrica em casa de vegetação. O déficit hídrico induziu o aumento dos teores de aminoácidos solúveis totais, prolina, açúcares solúveis totais e K+ nos tecidos foliares, ocasionando o abaixamento do potencial osmótico em ambas as espécies. Porém, a análise dos resultados das curvas pressão-volume indica que as espécies respondem, de maneira diferente, ao estresse hídrico e o S. amazonicum apresenta maior capacidade de adaptação osmótica do que o S. parahyba.Juvenile plants of S. amazonicum (paricá and S. parahyba (guapuruvu were subjected to two cycles of water stress in greenhouse conditions. The water deficit induced the increase in total soluble amino acids, proline, total soluble sugars and K+ contents in the leaf tissues, lowering osmotic potential values in both species. However, the analysis of the pressure-volume curve results suggests that the species respond differently to water stress, and that S. amazonicum presents greater capacity of osmotic adaptation than S. parahyba.

  4. Occurrence of Solenopsis saevissima F Smith (Hymenoptera: Formicidae) damaging Schizolobium amazonicum; Danos de Solenopsis saevissima F Smith (Hymenoptera: Formicidae) em Parica, Schizolobium amazonicum

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    Lunz, Alexandre M.; Aguiar, Tanice da S.; Cardoso, Andreza S. [EMBRAPA Amazonia Oriental, Belem, PA (Brazil). Lab. de Entomologia], e-mail: amehl@cpatu.embrapa.br; Harada, Ana Y. [Museu Paraense Emilio Goeldi, Belem, PA (Brazil). Coordenacao de Pesquisas em Zoologia. Setor de Invertebrados], e-mail: ahara@museu-goeldi.br

    2009-03-15

    Injuries by Solenopsis saevissima F Smith in parica (Schizolobium amazonicum) trees are described for the first time in Dom Eliseu County, Para State, Brazil. This ant damages leaves and the shaft where holes and galleries are opened up to the plant shoot. Terminal and new shoots are attacked and destroyed, harming the development of upright and uniform trunks for commercialization. Arboreal nests constructed by this ant were also observed in some plants. (author)

  5. Occurrence of Solenopsis saevissima F Smith (Hymenoptera: Formicidae) damaging Schizolobium amazonicum

    International Nuclear Information System (INIS)

    Lunz, Alexandre M.; Aguiar, Tanice da S.; Cardoso, Andreza S.; Harada, Ana Y.

    2009-01-01

    Injuries by Solenopsis saevissima F Smith in parica (Schizolobium amazonicum) trees are described for the first time in Dom Eliseu County, Para State, Brazil. This ant damages leaves and the shaft where holes and galleries are opened up to the plant shoot. Terminal and new shoots are attacked and destroyed, harming the development of upright and uniform trunks for commercialization. Arboreal nests constructed by this ant were also observed in some plants. (author)

  6. Properties of particleboards fabricated with eucalyptus (Eucalyptus urophylla, parica (Schizolobium amazonicum and vassoura (Sida spp. particles

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    Juliana Jerásio Bianche

    2012-12-01

    Full Text Available The genus Sida may become a promising alternative source for the production of particleboards. Nowadays it is used for manufacturing ropes due to the quality of its fibers, however, there is no research relating the production of particleboards using this lignocelluloses material. This study aimed to evaluate the effect of eucalyptus (Eucalyptus urophylla, paricá (Schizolobium amazonicum and vassoura (Sida spp. on the physical and mechanical properties of particleboard. Particleboard contained 25, 50, 75 and 100% of eucalyptus and paricá or eucalytus and vassoura or paricá an vassoura were fabricated. Two (6% and 8% amounts of urea-formaldehyde adhesive were used. The physical and mechanical properties were determined according to NBR / ABNT 14810-3 (ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS - ABNT, 2002. It was observed that increase in resin content in the improved some physical and mechanical properties. It was concluded that the amount of vassoura particles on panels had different effects depending on the species used. The increase in the percentage of vassoura particles in the Eucalyptus panels did not affect the internal bond, screw withdrawal and hardness. Increasing the percentage of vassoura particles on the panels produced with paricá did not affect its hardness and resistance to screw withdrawal. The panels produced with vassoura particle absorbed more water and, consequently, increased the thickness swelling, and therefore is not recommended for use in environments with high humidity. It was concluded that the genus Sida, in general, has potential for particleboard production.

  7. EFFECT OF THERMO-MECHANICAL TREATMENT ON PROPERTIES OF PARICA PLYWOODS (Schizolobium amazonicum Huber ex Ducke

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    Mírian de Almeida Costa

    Full Text Available ABSTRACT Thermo-mechanical treatment is a technique for wood modification in which samples are densified by means of heat and mechanical compression, applied perpendicularly to fibers, which under different combinations of time, temperature, and pressure increases wood density and thus improve some of its properties. This study aimed to treat thermo-mechanically parica plywood and observe the effects on its physical and mechanical properties. Specimens were submitted to two treatments, 120 and 150 ºC, remaining under pressure for seven minutes and, subsequently, under zero pressure for 15 minutes. Results showed a significant increase in specific mass from 0.48 g cm-3 to an average of 0.56 g cm-3, and a compression ratio of about 31.7% on average. Physical properties also varied significantly and results showed that treated samples swelled and absorbed more water than those untreated, leading to a greater thickness non-return rate. This indicates the proposed thermal treatments did not release the internal compressive stress generated during panel pressing, not improving its dimensional stability as a result. On the other hand, mechanical properties were positively affected, leading to an increase of 27.5% and 51.8% in modulus of rupture after treatments at 120 and 150 ºC, respectively. Modulus of elasticity and glue-line shear strength did not vary statistically and Janka hardness was 29.7% higher after treatment at 150 ºC.

  8. Avaliação do potencial de utilização da madeira de Schizolobium amazonicum "Paricá" e Cecropia hololeuca "Embaúba" para produção de painéis aglomerados Evaluation of potential use of the wood of Schizolobium amazonicum "Paricá" and Cecropia hololeuca "Embaúba" to particleboard manufacture

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    Setsuo Iwakiri

    2010-01-01

    Full Text Available Esta pesquisa teve por objetivo avaliar o potencial de utilização de madeira de Schizolobium amazonicum (Paricá e Cecropia hololeuca (Embaúba para produção de painéis aglomerados. Foram produzidos painéis experimentais com densidade nominal de 0,70 g/cm³, utilizando a resina uréia-formaldeído e partículas de madeira de Paricá e Embaúba, e mistura destas, em proporções de 75, 50 e 25%. A madeira de Pinus taeda foi utilizada como testemunha. Os painéis foram prensados com pressão específica de 40 kgf/cm², temperatura de 160ºC e tempo de prensagem de 8 minutos. Os resultados das avaliações de propriedades de absorção de água, inchamento em espessura, ligação interna, módulo de elasticidade e módulo de ruptura, indicaram que as madeiras de Schizolobium amazonicum (Paricá e Cecropia hololeuca (Embaúba são tecnicamente viáveis para produção de painéis aglomerados.This research was developed to evaluate the potential use of the woods Schizolobium amazonicum (Paricá and Cecropia hololeuca (Embaúba for manufacturing particleboard. Were made panels with the densities of 0.70 g/cm³, using mixtures of urea-formaldehyde resin and wood particles of Paricá and Embaúba, in proportions of 75, 50 and 25%. The Pinus taeda wood was used as the reference. The panels were pressed at the temperature of 160ºC, pressure of 40 kgf/cm², for 8 minutes. The evaluations of the properties of water absorption, thickness swelling, internal bond, modulus of elasticity and modulus of ruptures, showed that the woods of Schizolobium amazonicum (Paricá e Cecropia hololeuca (Embaúba are technically feasible for particleboard manufacture.

  9. ANATOMICAL CHARACTERISTICS AND CHEMICAL PROPERTIES OF THE BRANCH-WOOD OF Schizolobium amazonicum DUCKE SPECIES AND ITS POTENTIAL USES

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    Yusup Amin

    2013-10-01

    Full Text Available The scale of forest degradation and deforestation in Indonesia has inspired the use of lesser-known wood species, which are potentially abundant and so far has not much been utilized. Utilization of these woods should be imposed not only of the stem wood but also of the branch-wood portions. Schizolobiumamazonicum Ducke treeis one of those lesser-known species, and growing fast with an MAIof3.68 cm/year.In Indonesia this species is only found in the Purwodadi Botanical Garden. A research was conducted to study the basic characteristics (anatomical aspects and chemical properties of the branch-wood portion of this species. The branch-wood materials were obtained from the Purwodadi Botanical Garden situated in Pasuruan (East Java. The specimens used were the first branch of the trunk (stem of nine-year old S. amazonicum tree (= 29.46 cm. The branch-wood samples were then examined for the anatomical aspects (macroscopic and microscopic characteristics and chemical properties (chemical composition. Results revealed that the anatomical properties of S.amazonicum branch-wood exhibited close similarities to those of sengon wood; it was light in appearance and white in color. Its fiber averaged about 1500 μm, and based on the fiber dimension's derived values the branch- wood fiber of this species was categorized into first-class quality for pulp and paper manufacture. Further, the chemical composition of this branch-wood compared favorably with that of sengon and mangium wood. The composition of extractive content thatsoluble in alcohol-benzene; lignin; holocellulose; and α-cellulose of this branch-wood were 2.46; 28.71; 80.64; and 50.47%, respectively. The overall assessment implied that the branch-wood portion of S.amazonicum tree affords favorable potential to be developed as raw material for pulp and paper manufacture. Also, considering that both sengon and mangium woods were already used in the pulp and paper industries as well as the trees are

  10. Propriedades de chapas fabricadas com partículas de madeira de paricá (Schyzolobium amazonicum Huber ex. Ducke) e fibras de coco (Cocos nucifera L.) Properties of particleboards made of paricá (Schyzolobium amazonicum Huber ex. Ducke) particles and coconut (Cocus nucifera L.) fibers

    OpenAIRE

    Andrea Colli; Benedito Rocha Vital; Angêlica de Cássia Oliveira Carneiro; José de Castro Silva; Ana Márcia Macedo Ladeira Carvalho; Ricardo Marius Della Lucia

    2010-01-01

    Este trabalho teve como objetivo determinar as propriedades de chapas fabricadas com partículas de madeira de paricá (Schyzolobium amazonicum Huber ex. Ducke), às quais foram adicionadas diferentes proporções de fibras de coco (Cocos nucifera L.). As chapas foram fabricadas com 6 ou 8% de adesivo, à base de ureia-formaldeído e tendo como meta uma massa específica de 360 kg/m³. Observou-se que a adição de fibras de coco não afetou a estabilidade dimensional, higroscopicidade e absorção de água...

  11. Propriedades de chapas fabricadas com partículas de madeira de paricá (Schyzolobium amazonicum Huber ex. Ducke e fibras de coco (Cocos nucifera L. Properties of particleboards made of paricá (Schyzolobium amazonicum Huber ex. Ducke particles and coconut (Cocus nucifera L. fibers

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    Andrea Colli

    2010-04-01

    Full Text Available Este trabalho teve como objetivo determinar as propriedades de chapas fabricadas com partículas de madeira de paricá (Schyzolobium amazonicum Huber ex. Ducke, às quais foram adicionadas diferentes proporções de fibras de coco (Cocos nucifera L.. As chapas foram fabricadas com 6 ou 8% de adesivo, à base de ureia-formaldeído e tendo como meta uma massa específica de 360 kg/m³. Observou-se que a adição de fibras de coco não afetou a estabilidade dimensional, higroscopicidade e absorção de água, porém aumentou significativamente as demais propriedades. As chapas fabricadas com 8% de adesivo foram mais estáveis e mais resistentes do que aquelas feitas com 6% de adesivo.This work had as its objective to determine the properties of particleboards fabricated with paricá particles (Schyzolobium amazonicum Huber ex. Ducke, with increasing proportions of coconut fibers (Coconuts nucifera L.. Boards were fabricated with 6 or 8% of urea-formaldehyde adhesive. Particleboard mean density was equal to 360 kg/m³. The addition of coconut fibers didn't affected boards' dimensional stability, higrospicidity, water absorption capability. However it increased its mechanical properties. The addition of 8% of adhesive improved all board properties.

  12. Inoculation of Schizolobium parahyba with mycorrhizal fungi and plant growth-promoting rhizobacteria increases wood yield under field conditions

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    Martha Viviana Torres Cely

    2016-11-01

    Full Text Available Schizolobium parahyba var. amazonicum (Huber ex Ducke occurs naturally in the Brazilian Amazon. Currently, it is being planted extensively because of its fast growth and excellent use in forestry. Consequently, there is great interest in new strategies to increase wood production. The interaction between soil microorganisms and plants, specifically in the roots, provides essential nutrients for plant growth. These interactions can have growth-promoting effects. In this way, this study assessed the effect of the inoculation with arbuscular mycorrhizal fungi (AMF and plant growth-promoting rhizobacteria (PGPR on growth of S. parahyba var. amazonicum under field conditions. We used two native species of arbuscular mycorrhizal fungi, Claroideoglomus etunicatum (Ce and Acaulospora sp. (Ac; two native strains of Rhizobium sp. (Rh1 and Rh2; and a non-native strain of Burkholderia sp. Different combinations of microorganisms were supplemented with chemical fertilizers (doses D1 and D2 in two planting methods, seed sowing and seedling planting. In seed sowing, the results showed that treatments with Ce/Rh1/Fertilizer D2 and Ac/No PGPR/Fertilizer D2 increased wood yield. In seedling planting, two combinations (Ac/Rh2/Fertilizer D1 and Ac/Rh1/Fertilizer D1 were more effective in increasing seedling growth. In these experiments, inoculation with AMF and PGPR increased wood yield by about 20% compared to the application of fertilizer alone.

  13. Inoculation ofSchizolobium parahybawith Mycorrhizal Fungi and Plant Growth-Promoting Rhizobacteria Increases Wood Yield under Field Conditions.

    Science.gov (United States)

    Cely, Martha V T; Siviero, Marco A; Emiliano, Janaina; Spago, Flávia R; Freitas, Vanessa F; Barazetti, André R; Goya, Erika T; Lamberti, Gustavo de Souza; Dos Santos, Igor M O; De Oliveira, Admilton G; Andrade, Galdino

    2016-01-01

    Schizolobium parahyba var. amazonicum (Huber ex Ducke) occurs naturally in the Brazilian Amazon. Currently, it is being planted extensively because of its fast growth and excellent use in forestry. Consequently, there is great interest in new strategies to increase wood production. The interaction between soil microorganisms and plants, specifically in the roots, provides essential nutrients for plant growth. These interactions can have growth-promoting effects. In this way, this study assessed the effect of the inoculation with arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) on growth of S. parahyba var. amazonicum under field conditions. We used two native species of arbuscular mycorrhizal fungi, Claroideoglomus etunicatum (Ce), and Acaulospora sp. (Ac); two native strains of Rhizobium sp. (Rh1 and Rh2); and a non-native strain of Burkholderia sp. Different combinations of microorganisms were supplemented with chemical fertilizers (doses D1 and D2) in two planting methods, seed sowing and seedling planting. In seed sowing, the results showed that treatments with Ce/Rh1/Fertilizer D2 and Ac/No PGPR/Fertilizer D2 increased wood yield. In seedling planting, two combinations (Ac/Rh2/Fertilizer D1 and Ac/Rh1/Fertilizer D1) were more effective in increasing seedling growth. In these experiments, inoculation with AMF and PGPR increased wood yield by about 20% compared to the application of fertilizer alone.

  14. Robustizing Circuit Optimization using Huber Functions

    DEFF Research Database (Denmark)

    Bandler, John W.; Biernacki, Radek M.; Chen, Steve H.

    1993-01-01

    , and statistical uncertainties. They demonstrate FET statistical modeling, multiplexer optimization, analog fault location, and data fitting. They extend the Huber concept by introducing a 'one-sided' Huber function for large-scale optimization. For large-scale problems, the designer often attempts, by intuition...

  15. Robustizing Circuit Optimization using Huber Functions

    DEFF Research Database (Denmark)

    Bandler, John W.; Biernacki, Radek M.; Chen, Steve H.

    1993-01-01

    The authors introduce a novel approach to 'robustizing' microwave circuit optimization using Huber functions, both two-sided and one-sided. They compare Huber optimization with l/sub 1/, l/sub 2/, and minimax methods in the presence of faults, large and small measurement errors, bad starting poin......, a preliminary optimization by selecting a small number of dominant variables. It is demonstrated, through multiplexer optimization, that the one-sided Huber function can be more effective and efficient than minimax in overcoming a bad starting point.......The authors introduce a novel approach to 'robustizing' microwave circuit optimization using Huber functions, both two-sided and one-sided. They compare Huber optimization with l/sub 1/, l/sub 2/, and minimax methods in the presence of faults, large and small measurement errors, bad starting points......, and statistical uncertainties. They demonstrate FET statistical modeling, multiplexer optimization, analog fault location, and data fitting. They extend the Huber concept by introducing a 'one-sided' Huber function for large-scale optimization. For large-scale problems, the designer often attempts, by intuition...

  16. Huber effect and its application to micromotors

    Science.gov (United States)

    Shen, Yullia; Tay, Boon K.; Thompson, Benjamin; Soong, Wen L.; Davis, Bruce R.; Abbott, Derek

    1999-09-01

    The micromotor is an extremely small device a few millimeters or less in size. Micromotors in the order of microns are realized by MEMS technology. Important applications in biomedicine include ultrasound probes for blood vessels, microrobots for colon intervention, smart pills and nanolitre pumps. Other uses include actuator for MOEMS and small variable capacitors. One exciting implication of micromotors is that they can be powered by rectifying mechanical vibrations. MEMS are playing an important role in our daily life as these systems are widely used in optics, communication and information systems, fluidics, biotechnology and medicine, scanning probe microscopes, automobiles and aerospace. There are a number technical challenges with micromotors, including the need to reduce stiction and increase torque. The precise geometry of the motor is usually tightly coupled to the stiction effect - the sticking of adjacent surfaces after release due to static friction. Piezoelectric, electrostatic and electromagnetic effects have been investigated to produce the electromotive force for the micromotor. However, we propose a micromotor design based on the Huber effect, as this will allow a new range of geometries and hence possibilities for managing stiction. To date, there have been no reported attempts at using the Huber effect, and this is possibly due to it being a poorly understood phenomenon. The reason for this is that large motors that utilize the Huber effect are self-destructive and hence have never been reliably characterized. Such motors are shown to be able to operate form a dc or ac source, and this property may be valuable in some MEMS applications.

  17. Alkaloids from Duguetia flagellaris Huber (Annonaceae)

    International Nuclear Information System (INIS)

    Navarro, V.R.; Sette, I.M.F.; Da-Cunha, E.V.L.; Silva, M.S.; Barbosa Filho, J.M.; Maia, J.G.S.

    2001-01-01

    Ten aporphine alkaloids were isolated from ethanol extract of leaves, thin branches and stem bark of Duguetia flagellaris Huber (Annonceae); they were identified by 1 H and 13 C NMR spectroscopic techniques; five were aporphine strictu sensu: nornuciferine (1), isopiline (2), O-methylisopiline (3), calycinine (3), duguevanine (5), and five 7-hydroxyaporphines: pachypodanthine (6), oliveroline β-N-oxide (8), oliveridine (9), and duguetine (10). Alkaloids 2, 6, 7 and 8 are being cited for the first time in Duguetia genus. This study also includes a literature review of the chemical constituents of the genus Duguetia, predominantly aporphine alkaloids, all isolated from plants that occur in South America. (author)

  18. Alkaloids from Duguetia flagellaris Huber (Annonaceae); Alcaloides de Duguetia flagellaris Huber (Annonaceae)

    Energy Technology Data Exchange (ETDEWEB)

    Navarro, V.R.; Sette, I.M.F.; Da-Cunha, E.V.L.; Silva, M.S.; Barbosa Filho, J.M. [Paraiba Univ., Joao Pessoa, PB (Brazil). Lab. de Tecnologia Farmaceutica; Maia, J.G.S. [Museu Paraense Emilio Goeldi, Belem, PA (Brazil). Dept. de Botanica

    2001-04-01

    Ten aporphine alkaloids were isolated from ethanol extract of leaves, thin branches and stem bark of Duguetia flagellaris Huber (Annonceae); they were identified by {sup 1} H and {sup 13} C NMR spectroscopic techniques; five were aporphine strictu sensu: nornuciferine (1), isopiline (2), O-methylisopiline (3), calycinine (3), duguevanine (5), and five 7-hydroxyaporphines: pachypodanthine (6), oliveroline {beta}-N-oxide (8), oliveridine (9), and duguetine (10). Alkaloids 2, 6, 7 and 8 are being cited for the first time in Duguetia genus. This study also includes a literature review of the chemical constituents of the genus Duguetia, predominantly aporphine alkaloids, all isolated from plants that occur in South America. (author)

  19. SUBSTRATE COMPOSITION AND PHYSIOLOGICAL PARAMETERS OF GROWTH OF SEEDLINGS GUAPURUVU (SCHIZOLOBIUM PARAHYBA VELL. BLAKE

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    Leonardo Humberto Silva e Castro

    2014-07-01

    Full Text Available Schizolobium parahyba Vell. Blake is a native species of the Atlantic river forest that its wood is very efficient to make doors, fruit packaging, to use in construction, interior works and other uses. This work aimed to evaluate the influence of substrate composition on emergence and growth physiological parameters of Schizolobium parahyba seedlings. Selected seeds were subjected to grow in the following compositions of the substrate: T1 witness (haplustox - LV, T2 LV + potato processing waste (1:1 + chemical treatment (TQ: 100 of limestone + 100 g of superphosphate, T 3 LV + earthworm humus (1:1 + TQ and T 4 LV + sand + cattle manure (1:1:2 + TQ. Seedling emergence was evaluated at 21 days after sowing (DAS and at 60 DAS measured the shoot height, root length, fresh weight of shoot, root fresh weight, dry weight of shoot and root dry weight. The use of earthworm compost, cattle manure and waste from potato processing proved effective for Schizolobium parahyba seedlings production, since no significant differences were verified among the treatments applied. The use of organic sources to supplement the substrate is of paramount importance for native species seedlings production.

  20. Reproductive cycle of Macrobrachium amazonicum females (Crustacea, Palaemonidae

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    CMS. Sampaio

    Full Text Available Macrobrachium amazonicum is considered a favorite Brazilian species of freshwater prawn for cultivation as a result of its quick development and because it is easy to maintain in captivity. The aim of this work is to describe the sexual cycle stages and determine maturation age of the female M. amazonicum, which was collected monthly from June, 2002 to May, 2003 in the Jaguaribe River, Itaiçaba, Ceará. A monthly sample of water was also collected to determine the following parameters: temperature, dissolved oxygen, pH and salinity. A monthly sample of females was selected among the individuals caught, to determine the total weight (W T, carapace length (L C and abdomen+telson length (L A+T and to register the number of non-ovigerous females (NOF and ovigerous females (OF. Determining ovarian maturation stages of M. amazonicum was done in a laboratory by observing macroscopic characters such as coloring, size, location and appearance of ovarians examined by transparent carapace. The first maturation age was determined from the relative frequency of the total length (L T of young and adult females. The environmental parameters of the Jaguaribe River did not hold any influence in the number of individuals collected. A total of 1,337 prawns were sampled, 513 males (38.4% and 824 females (61.6%. The proportion between males and females in the studied population was of 1:1.6. Among the collected females, 492 (50.7% did not carry eggs in their abdomens (NOF and 332 (40.3% carried eggs in their abdomens (OF. There was no record of intact females. Non-ovigerous females with mature ovaries were recorded throughout all the months of collection. The female ovaries were classified as immature (IM, rudimentary (RU, intermediary (IN and mature (M. M. amazonicum females reach their first sexual maturity between 4.5 and 5.5 cm of total length.

  1. Reproductive cycle of Macrobrachium amazonicum females (Crustacea, Palaemonidae).

    Science.gov (United States)

    Sampaio, C M S; Silva, R R; Santos, J A; Sales, S P

    2007-08-01

    Macrobrachium amazonicum is considered a favorite Brazilian species of freshwater prawn for cultivation as a result of its quick development and because it is easy to maintain in captivity. The aim of this work is to describe the sexual cycle stages and determine maturation age of the female M. amazonicum, which was collected monthly from June, 2002 to May, 2003 in the Jaguaribe River, Itaiçaba, Ceará. A monthly sample of water was also collected to determine the following parameters: temperature, dissolved oxygen, pH and salinity. A monthly sample of females was selected among the individuals caught, to determine the total weight (W(T)), carapace length (L( C)) and abdomen+telson length (L(A+T)) and to register the number of non-ovigerous females (NOF) and ovigerous females (OF). Determining ovarian maturation stages of M. amazonicum was done in a laboratory by observing macroscopic characters such as coloring, size, location and appearance of ovarians examined by transparent carapace. The first maturation age was determined from the relative frequency of the total length (L(T)) of young and adult females. The environmental parameters of the Jaguaribe River did not hold any influence in the number of individuals collected. A total of 1,337 prawns were sampled, 513 males (38.4%) and 824 females (61.6%). The proportion between males and females in the studied population was of 1:1.6. Among the collected females, 492 (50.7%) did not carry eggs in their abdomens (NOF) and 332 (40.3%) carried eggs in their abdomens (OF). There was no record of intact females. Non-ovigerous females with mature ovaries were recorded throughout all the months of collection. The female ovaries were classified as immature (IM), rudimentary (RU), intermediary (IN) and mature (M). M. amazonicum females reach their first sexual maturity between 4.5 and 5.5 cm of total length.

  2. Purification and pH stability characterization of a chymotrypsin inhibitor from Schizolobium parahyba seeds.

    Science.gov (United States)

    Teles, Rozeni C L; de Souza, Elizabeth M T; Calderon, Leonardo de A; de Freitas, Sonia M

    2004-04-01

    Schizolobium parahyba chymotrypsin inhibitor (SPCI) was completely purified as a single polypeptide chain with two disulfide bonds, by TCA precipitation and ion exchange chromatography. This purification method is faster and more efficient than that previously reported: SPCI is stable from pH 2 to 12 at 25 degrees C, and is highly specific for chymotrypsin at pH 7-12. It weakly inhibits elastase and has no significant inhibitory effect against trypsin and alpha-amylase. SPCI is a thermostable protein and resists thermolysin digestion up to 70 degrees C.

  3. Trichoderma amazonicum, a new endophytic species on Hevea brasiliensis and H. guianensis from the Amazon basin

    Science.gov (United States)

    A new species of Trichoderma (teleomorph Hypocrea, Ascomycota, Sordariomycetes, Hypocreales, Hypocreaceae), T. amazonicum, endophytic on the living sapwood and leaves of Hevea spp. trees is described. Trichoderma amazonicum is distinguished from closely related species in the Harzianum clade (e.g. ...

  4. Synthesizing Huber's Problem Solving and Kolb's Learning Cycle: A Balanced Approach to Technical Problem Solving

    Science.gov (United States)

    Kamis, Arnold; Khan, Beverly K.

    2009-01-01

    How do we model and improve technical problem solving, such as network subnetting? This paper reports an experimental study that tested several hypotheses derived from Kolb's experiential learning cycle and Huber's problem solving model. As subjects solved a network subnetting problem, they mapped their mental processes according to Huber's…

  5. Fecundity and fertility of Macrobrachium amazonicum (Crustacea, Palaemonidae).

    Science.gov (United States)

    Da Silva, R R; Sampaio, C M S; Santos, J A

    2004-08-01

    In Brazil, studies with native freshwater prawn species were discontinued due to great importance of Macrobrachium rosenbergii. Therefore, it is necessary to continue investigations about our species, in order to develop technology adequate to our reality and in a future allow prawn farmers to culture other species. The aim of this study was to determine the fecundity and fertility of Macrobrachium amazonicum captured monthly from June 1999 to June 2001 from Jaguaribe River, Itaiçaba, Ceará, Brazil. Prawns were collected using fishing net and transferred at Biological Science Laboratory, Ceara State University (Fortaleza, Ceará, Brazil). Among the ovigerous M. amazonicum females, 60 were randomly selected to determine fecundity. The eggs adhered to the pleopods were taken out and they were then placed in a Gilson solution, and then stored in alcohol 70%. Individual fecundity was determined from the total egg counting, using a stereoscopic microscope. To determine fertility, ovigerous M. amazonicum females were stored in individual 10 L-glass tanks maintained under strong aeration. After the hatching, the larvae were siphoned and counted. The data referring to total length and weight of all the females, storage date, coloration and number of eggs, weight and coloration of gonad and number of hatched larvae were noted. With respect to average fecundity (F) by length classes, the lowest and highest number of eggs observed was 696 and 1,554, respectively. As for fecundity by weight classes, the lowest number of eggs observed was 760 and the highest, 1,690. The highest number of eggs observed individually per hatching was 2,193. Average fecundity/total length (L) and average fecundity/total weight (W) may be expressed by a linear relationship. The adjusted equations are: F = -411.6 + 203.1 L (p amazonicum are lower than ones commercial species, never-the-less it can be captured during all year long. The number of captured prawns was large in the months whose level of

  6. Genetic variability of the Amazon River prawn Macrobrachium amazonicum (Decapoda, Caridea, Palaemonidae)

    NARCIS (Netherlands)

    Vergamini, F.G.; Pileggi, L.G.; Mantelatto, F.L.

    2011-01-01

    The freshwater prawn Macrobrachium amazonicum is widely distributed in South America, and occupies habitats with a wide range of salinities. Several investigations have revealed the existence of wide intraspecific variability among different populations, although the understanding of this

  7. Survival of Macrobrachium amazonicum embryos submitted to cooling.

    Science.gov (United States)

    Ferreira, Arthur Vinícius Lourenço; Martins, Moisés Fernandes; Martins de Sousa, Míriam Luzia Nogueira; Soares Filho, Aldeney Andrade; Sampaio, Célia Maria de Souza

    2017-06-01

    Cooling techniques have several applications for reproduction in aquaculture. However, few studies have sought to create protocols for cooling and cryopreservation of Macrobrachium amazonicum embryos. Thus, the objective of this work was to verify the survival of M. amazonicum embryos and the correlation between embryonic volume and mortality of M. amazonicum embryos after cooling. Embryo pools were collected from three females and divided into two treatment groups: dimethyl sulfoxide (DMSO) 3% and ethylene glycol (EG) 0.5%, both of them associated with 2 M sucrose. Positive and negative control groups consisted of seawater 10%. Aliquots of 10 µg of embryos were placed in Falcon® tubes containing a cryoprotectant solution and submitted directly to the test temperature of 2°C for 2 and 6 h of cooling. Further analysis of survival and embryonic volume were performed under a stereoscopic microscope. Data were subjected to analysis of variance (ANOVA), and means were compared using the Tukey test at 5%. The highest embryonic survival rate was observed after the shortest storage time for both the DMSO 3% and the 0.5% EG groups, with survival rates of 84.8 ± 3.9 and 79.7 ± 2.8%, respectively. There was a reduction in survival after 24 h, with the DMSO 3% group presenting a survival rate of 71.7 ± 6.6%, and the EG 0.5% group, 66 ± 6.9%. Survival showed a statistically significant difference when compared with the positive controls after 2 h and 24 h of cooling, with 99 ± 0.5% and 95.8 ± 1.5% survival rates, respectively. There was no significant statistical difference in the embryonic volume, but it was possible to observe a change in the appearance of the embryos, from a translucent coloration to an opaque white or brownish coloration, after 24 h in incubators. Thus, it can be concluded that survival is inversely proportional to storage time and that, although there was no change in the embryonic volume after cooling, a change in the appearance of embryos could

  8. Fecundity and fertility of Macrobrachium amazonicum (Crustacea, Palaemonidae

    Directory of Open Access Journals (Sweden)

    R. R. da Silva

    Full Text Available In Brazil, studies with native freshwater prawn species were discontinued due to great importance of Macrobrachium rosenbergii. Therefore, it is necessary to continue investigations about our species, in order to develop technology adequate to our reality and in a future allow prawn farmers to culture other species. The aim of this study was to determine the fecundity and fertility of Macrobrachium amazonicum captured monthly from June 1999 to June 2001 from Jaguaribe River, Itaiçaba, Ceará, Brazil. Prawns were collected using fishing net and transferred at Biological Science Laboratory, Ceará State University (Fortaleza, Ceará, Brazil. Among the ovigerous M. amazonicum females, 60 were randomly selected to determine fecundity. The eggs adhered to the pleopods were taken out and they were then placed in a Gilson solution, and then stored in alcohol 70%. Individual fecundity was determined from the total egg counting, using a stereoscopic microscope. To determine fertility, ovigerous M. amazonicum females were stored in individual 10 L-glass tanks maintained under strong aeration. After the hatching, the larvae were siphoned and counted. The data referring to total length and weight of all the females, storage date, coloration and number of eggs, weight and coloration of gonad and number of hatched larvae were noted. With respect to average fecundity (F by length classes, the lowest and highest number of eggs observed was 696 and 1,554, respectively. As for fecundity by weight classes, the lowest number of eggs observed was 760 and the highest, 1,690. The highest number of eggs observed individually per hatching was 2,193. Average fecundity/total length (L and average fecundity/total weight (W may be expressed by a linear relationship. The adjusted equations are: F = -411.6 + 203.1 L (p < 0.0001 and F = 566.4 + 157.3 W (p < 0.0001, respectively. In the analysis of average fertility (N per length classes, the lowest and highest number of

  9. Effects of Schizolobium parahyba extract on experimental Bothrops venom-induced acute kidney injury.

    Directory of Open Access Journals (Sweden)

    Monique Silva Martines

    Full Text Available BACKGROUND: Venom-induced acute kidney injury (AKI is a frequent complication of Bothrops snakebite with relevant morbidity and mortality. The aim of this study was to assess the effects of Schizolobium parahyba (SP extract, a natural medicine with presumed anti-Bothrops venom effects, in an experimental model of Bothrops jararaca venom (BV-induced AKI. METHODOLOGY: Groups of 8 to 10 rats received infusions of 0.9% saline (control, C, SP 2 mg/kg, BV 0.25 mg/kg and BV immediately followed by SP (treatment, T in the doses already described. After the respective infusions, animals were assessed for their glomerular filtration rate (GFR, inulin clearance, renal blood flow (RBF, Doppler, blood pressure (BP, intra-arterial transducer, renal vascular resistance (RVR, urinary osmolality (UO, freezing point, urinary neutrophil gelatinase-associated lipocalin (NGAL, enzyme-linked immunosorbent assay [ELISA], lactate dehydrogenase (LDH, kinetic method, hematocrit (Hct, microhematocrit, fibrinogen (Fi, Klauss modified and blinded renal histology (acute tubular necrosis score. PRINCIPAL FINDINGS: BV caused significant decreases in GFR, RBF, UO, HcT and Fi; significant increases in RVR, NGAL and LDH; and acute tubular necrosis. SP did not prevent these changes; instead, it caused a significant decrease in GFR when used alone. CONCLUSION: SP administered simultaneously with BV, in an approximate 10∶1 concentration, did not prevent BV-induced AKI, hemolysis and fibrinogen consumption. SP used alone caused a decrease in GFR.

  10. Occurrence of Pantophthalmus kerteszianus and P. chuni (Diptera: Pantophthalmidae on parica in Para State, Brazil Ocorrência de Pantophthalmus kerteszianus e P. chuni (Diptera: Pantophthalmidae em paricá, no Estado do Pará

    Directory of Open Access Journals (Sweden)

    Alexandre Mehl Lunz

    2010-06-01

    Full Text Available

    This is the first register of Pantophthalmus kerteszianus Enderlein e P. chuni Enderlein (Diptera: Pantophthalmidae attacking parica trees [Schizolobium parahyba (Vell. S. F. Blake var. amazonicum (Huber ex Ducke Barneby] in Paragominas, Para State, Brazil. Whereas Para State has the largest area with parica plantation in Brazil, there is a risk of these insects become important pests of this crop.


    doi: 10.4336/2010.pfb.30.61.71

    As ocorrências de Pantophthalmus kerteszianus Enderlein e P. chuni Enderlein são registradas pela primeira vez em reflorestamentos com paricá [Schizolobium parahyba (Vell. S. F. Blake var. amazonicum (Huber ex Ducke Barneby] no Estado do Pará, Município de Paragominas. Considerando que o Pará possui a maior área plantada de paricá no Brasil, existe o risco de esses insetos tornarem-se pragas importantes dessa cultura.

     

    doi: 10.4336/2010.pfb.30.61.71

  11. Estimating load weights with Huber's Cubic Volume formula: a field trial.

    Science.gov (United States)

    Dale R. Waddell

    1989-01-01

    Log weights were estimated from the product of Huber's cubic volume formula and green density. Tags showing estimated log weights were attached to logs in the field, and the weights were tallied into a single load weight as logs were assembled for aerial yarding. Accuracy of the estimated load weights was evaluated by comparing the predicted with the actual load...

  12. Quality of Schizolobium parahyba seeds and seedlings from Rio Grande do Sul, Santa Catarina and Paraná states

    Directory of Open Access Journals (Sweden)

    Edicléia Aparecida Iensen Cherobini

    2010-09-01

    Full Text Available This research aimed to study the vigor and the quality of Schizolobium parahyba seeds from samples of three differentstates, Rio Grande do Sul (RS, Santa Catarina (SC and Paraná (PR and to evaluate the seedlings quality produced by these seeds.The seeds were submitted to evaluations of moisture content, germination, vigor and healthy. The seedlings quality was evaluated byhard seeds, dead seeds, emergence, seedling height, root length, collar diameter, fresh and dry weight of seedlings. On the seedsevaluations, the samples from SC and PR presented better results for first count of germination, dry matter and accelerate aging. Thefungi associated to the seeds were Aspergillus sp., Alternaria sp., Penicillium sp. and Trichoderma sp. About the seedlings evaluations,seeds from PR showed the bests results when the differences between tests were significant (emergence, root length and dry weight ofseedlings. Some of the labs variables had correlation with the seedlings variables.

  13. Outlier Detection in Regression Using an Iterated One-Step Approximation to the Huber-Skip Estimator

    DEFF Research Database (Denmark)

    Johansen, Søren; Nielsen, Bent

    2013-01-01

    In regression we can delete outliers based upon a preliminary estimator and reestimate the parameters by least squares based upon the retained observations. We study the properties of an iteratively defined sequence of estimators based on this idea. We relate the sequence to the Huber-skip estima......In regression we can delete outliers based upon a preliminary estimator and reestimate the parameters by least squares based upon the retained observations. We study the properties of an iteratively defined sequence of estimators based on this idea. We relate the sequence to the Huber...... that the normalized estimation errors are tight and are close to a linear function of the kernel, thus providing a stochastic expansion of the estimators, which is the same as for the Huber-skip. This implies that the iterated estimator is a close approximation of the Huber-skip...

  14. Relative growth of Amazon river prawn Macrobrachium amazonicum (Heller) (Crustacea, Decapoda, Palaemonidae) in earthen ponds

    OpenAIRE

    Moraes-Riodades, Patrícia M.C.; Valenti, Wagner C.

    2002-01-01

    Some morphometric relationships in Macrobrachium amazonicum (Heller, 1862) reared in earthen ponds were studied. A total of 239 individuals were collected, sexed and sorted to juvenile or adult. Total length (Lt), post-orbital length (Lpo), carapace length (Lcp) and queliped length (Lql) were measured. The relationships Lt/Lpo, Lpo/Lcp and Lt/Lcp are the same for juveniles, males and females, indicating unchanged growth pattern during post-larval ontogenetic development. While Lt/Lpo showed i...

  15. Enterobacteria and Vibrio from Macrobrachium amazonicum prawn farming in Fortaleza, Ceará, Brazil.

    Science.gov (United States)

    Castelo-Branco, Débora de Souza Collares Maia; Sales, Jamille Alencar; Brilhante, Raimunda Sâmia Nogueira; Guedes, Glaucia Morgana de Melo; Ponte, Yago Brito de; Sampaio, Célia Maria de Souza; Bandeira, Tereza de Jesus Pinheiro Gomes; Moreira, José Luciano Bezerra; Alencar, Lucas Pereira de; Paiva, Manoel de Araújo Neto; Cordeiro, Rossana de Aguiar; Monteiro, André Jalles; Pereira-Neto, Waldemiro de Aquino; Sidrim, José Júlio Costa; Rocha, Marcos Fábio Gadelha

    2016-01-01

    To investigate the isolation of enterobacteria associated with Macrobrachium amazonicum (M. amazonicum) farming and evaluate the in vitro antimicrobial susceptibility of Vibrio strains. Strains were isolated from female M. amazonicum prawns and environmental and hatchery water. Biochemical assays were used to identify bacterial genera and those belonging to the genus Vibrio were submitted to further analyses for species identification, through Vitek 2 automated system and serotyping. Susceptibility test was performed according to Clinical Laboratory Standards Institute. The following genera of enterobacteria were recovered: Enterobacter (n = 11), Citrobacter (n = 10), Proteus (n = 2), Serratia (n = 2), Kluyvera (n = 2), Providencia (n = 2), Cedecea (n = 1), Escherichia (n = 1), Edwardsiella (n = 1) and Buttiauxella (n = 1). As for Vibrio, three species were identified: Vibrio cholerae non-O1/non-O139 (n = 4), Vibrio vulnificus (V. vulnificus) (n = 1) and Vibrio mimicus (n = 1). Vibrio spp. showed minimum inhibitory concentrations values within the susceptibility range established by Clinical Laboratory Standards Institute for almost all antibiotics, except for V. vulnificus, which presented intermediate profile to ampicillin. Enterobacteria do not seem to be the most important pathogens associated with M. amazonicum farming, whereas the recovery of Vibrio spp. from larviculture, with emphasis on Vibrio cholerae and V. vulnificus, deserves special attention due to their role as potentially zoonotic aquaculture-associated pathogens. Furthermore, the intermediate susceptibility of V. vulnificus to ampicillin reflects the importance of monitoring drug use in prawn farming. Copyright © 2016 Hainan Medical College. Production and hosting by Elsevier B.V. All rights reserved.

  16. Macrobrachium amazonicum: an alternative for microbiological monitoring of aquatic environments in Brazil

    Directory of Open Access Journals (Sweden)

    Raimunda Sâmia Nogueira Brilhante

    2014-11-01

    Full Text Available This study aimed to evaluate the role of the Amazon River prawn, Macrobrachium amazonicum, as carrier of Candida spp., by analyzing the correlation between Candida spp. from these prawns and their environment (surface water and sediment, through M13-PCR fingerprinting and RAPD-PCR. For this purpose, 27 strains of Candida spp. were evaluated. These strains were recovered from the gastrointestinal tract of adult M. amazonicum (7/27 from Catú Lake, Ceará State, Brazil and from the aquatic environment (surface water and sediment of this lake (20/27. Molecular comparison between the strains from prawns and the aquatic environment was conducted by M13-PCR fingerprinting and RAPD-PCR, utilizing the primers M13 and OPQ16, respectively. The molecular analysis revealed similarities between the band patterns of eight Candida isolates with the primer M13 and 11 isolates with the primer OPQ16, indicating that the same strains are present in the digestive tract of M. amazonicum and in the aquatic environment where these prawns inhabit. Therefore, these prawns can be used as sentinels for environmental monitoring through the recovery of Candida spp. from the aquatic environment in their gastrointestinal tract

  17. VizieR Online Data Catalog: K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)

    Science.gov (United States)

    Huber, D.; Bryson, S. T.; et al.

    2017-09-01

    The construction of the EPIC, as well as modifications and shortcomings of the catalog are described in Huber+, 2016, J/ApJS/224/2 Changes for Campaigns 0-3, 7-10 and 16 are described in: http://archive.stsci.edu/k2/manuals/epic.pdf Kepler magnitudes (Kp) are shown to be accurate to ~0.1mag for the Kepler field, and the EPIC is typically complete to Kp~17 (Kp~19 for campaigns covered by Sloan Digital Sky Survey). (1 data file).

  18. Histological alterations in gills of Macrobrachium amazonicum juveniles exposed to ammonia and nitrite.

    Science.gov (United States)

    Dutra, Fabrício Martins; Rönnau, Milton; Sponchiado, Dircelei; Forneck, Sandra Carla; Freire, Carolina Arruda; Ballester, Eduardo Luis Cupertino

    2017-06-01

    Aquaculture has shown great growth in the last decades. Due to the restrictions on water use, production systems are becoming increasingly more intensive, raising concerns about the production water quality. Macrobrachium amazonicum is among the freshwater prawn species with favorable characteristics for production and possibility of intensification. Nitrogen compounds such as ammonia and nitrite affect the health of aquatic organisms since they quickly reach toxic concentrations. These compounds can also cause damage to the gill structure, leading to hypoxia in tissues, affecting acid-base balance, osmoregulation (salt absorption) and ammonia excretion, decreasing the immune capacity of the animal and, in extreme cases, cause death. The aim of this study was to assess histological changes in the gills of Macrobrachium amazonicum juveniles subjected to different concentrations of total ammonia and nitrite. The prawns were subjected to different concentrations of those compounds and their gills were removed and preserved for histological analysis. The gills were assessed for changes according to the Organ Index (I org ) and, for each change, an importance factor (w) was attributed according to the degree of reversibility and applied according to the degree of extension or frequency of the damage. The damage to the gills in the treatments with 100% mortality, both for ammonia and nitrite, corresponded to the high occurrence of progressive, regressive, circulatory, and inflammation damages. The other treatments (which caused less mortality) had mainly inflammation and regressive damages, whose occurrence increased according to the increase in ammonia and nitrite concentration. The histological analysis confirmed that the higher the total ammonia and nitrite concentrations, the larger the damages caused to the gill structure and that lower nitrite concentrations caused similar damages to those caused by higher total ammonia concentrations, which reflects the lower

  19. Effects of ammonia stress in the Amazon river shrimp Macrobrachium amazonicum (Decapoda, Palaemonidae).

    Science.gov (United States)

    Pinto, Marcelo R; Lucena, Malson N; Faleiros, Rogério Oliveira; Almeida, Eduardo Alves; McNamara, John C; Leone, Francisco A

    2016-01-01

    We evaluate the effects of total ammonia nitrogen-N (TAN) exposure for 72h on (Na(+),K(+))- and V(H(+))-ATPase activities and on their subunit expressions in gills of the diadromous freshwater shrimp Macrobrachium amazonicum. Specific (Na(+),K(+))- and V(H(+))-ATPase activities increased roughly 1.5- to 2-fold, respectively, after exposure to 2.0mmolL(-1) TAN. Quantitative RT-PCR analyses revealed a 2.5-fold increase in V(H(+))-ATPase B subunit mRNA expression while (Na(+),K(+))-ATPase α-subunit expression was unchanged. Immunohistochemical analyses of the gill lamellae located the (Na(+),K(+))-ATPase throughout the intralamellar septal cells, independently of TAN concentration, while the V(H(+))-ATPase was located in both the apical pillar cell flanges and pillar cell bodies. Systemic stress parameters like total hemocyte count decreased by 30% after exposure to 2.0mmolL(-1) TAN, accompanied by increased activities of the oxidative stress enzymes superoxide dismutase, glutathione reductase and glucose-6-phosphate dehydrogenase in the gills. The stress responses of M. amazonicum to elevated TAN include increases in gill (Na(+),K(+))- and V(H(+))-ATPase activities that are accompanied by changes in oxidative stress enzyme activities, immune system effects and an increase in gill V(H(+))-ATPase gene expression. These findings likely underpin physiological effects in a crustacean like M. amazonicum that exploits multiple ecosystems during its life cycle, as well as under culture conditions that may significantly impact shrimp production by the aquaculture industry. Copyright © 2015 Elsevier B.V. All rights reserved.

  20. Polimerization of methyl metacrylate in Schizolobium Parahyba (Vell.) Blake (Guapuruvu) and Pinus strobus VAR. Chiapensis mart. wood through Gamma radiation and temperature

    International Nuclear Information System (INIS)

    Carneiro, M.G.

    1982-01-01

    Guapuruvu (Schizolobium parahyba) wood samples that were impregnated with the methyl metacrylate monomer and polymerized by the use of gamma rays from a $6$0Co source at different dose exposure and total dose is analysed. The impregnation process by vacuum-atmospheric pressure its densities and the storage of the impregnated wood samples with monomer is described. The thermic process and the amount of absorved water, and the density values obtained through attenuation of gamma radiation are analyzed. (M.J.C.) [pt

  1. Chemical Composition, Enantiomeric Distribution, and Antifungal Activity of the Oleoresin Essential Oil of Protium amazonicum from Ecuador.

    Science.gov (United States)

    Satyal, Prabodh; Powers, Chelsea N; Parducci V, Rafael; McFeeters, Robert L; Setzer, William N

    2017-09-23

    Background: Protium species (Burseraceae) have been used in the treatment of various diseases and conditions such as ulcers and wounds. Methods: The essential oil from the oleoresin of Protium amazonicum was obtained by hydrodistillation and analyzed by GC-MS, GC-FID, and chiral GC-MS. P. amazonicum oleoresin oil was screened for antifungal activity against Candida albicans , Aspergillus niger , and Cryptococcus neoformans . Results: A total of 54 components representing 99.6% of the composition were identified in the oil. The essential oil was dominated by δ-3-carene (47.9%) with lesser quantities of other monoterpenoids α-pinene (4.0%), p -cymene (4.1%), limonene (5.1%), α-terpineol (5.5%) and p -cymen-8-ol (4.8%). Chiral GC-MS revealed most of the monoterpenoids to have a majority of levo enantiomers present with the exceptions of limonene and α-terpineol, which showed a dextro majority. P. amazonicum oleoresin oil showed promising activity against Cryptococcus neoformans , with MIC = 156 μg/mL. Conclusions: This account is the first reporting of both the chemical composition and enantiomeric distribution of the oleoresin essential oil of P. amazonicum from Ecuador. The oil was dominated by (-)-δ-3-carene, and this compound, along with other monoterpenoids, likely accounts for the observed antifungal activity of the oil.

  2. EFFLUENTS QUALITY DURING THE GROW-OUT PHASE OF THE AMAZON SHRIMP Macrobrachium amazonicum

    Directory of Open Access Journals (Sweden)

    Mayra Nogueira

    2014-06-01

    Full Text Available In recent years shrimp culture farms have been one of the most growing sectors in aquaculture. Research has been carried out in order to establish a sustainable production maintaining profit and low environmental impact. Current investigation analyzed source and effluent water produced during the final grow-out phase of the Amazon shrimp (Macrobrachium amazonicum. Twelve natural-bottom ponds, with continuous water flow and stock density comprising 40, 60, 80 and 100 young shrimps/m2 were analyzed. The experiment design comprised totally randomized blocks with four treatments and three replications. Microbiological analyses for Escherichia coli was attempted, coupled to physical and chemical analyses for pH, temperature, total suspended solids, total nitrogen, nitrite, nitrate, biochemical oxygen demand and chemical oxygen demand of water supply and pond effluents. Results show that whereas effluent quality complied with current legal rules, there was no significant difference between supply and effluent water for the analyzed variables and between stock densities. Under the conditions investigated and the intensification of culture in the final grow-out phase up to a density of 100 young shrimps/m2, the production of M. amazonicum reveals low potential for environmental impact for the variables analyzed.

  3. Yeasts from Macrobrachium amazonicum: a focus on antifungal susceptibility and virulence factors of Candida spp.

    Science.gov (United States)

    Brilhante, Raimunda S N; Paiva, Manoel A N; Sampaio, Célia M S; Teixeira, Carlos E C; Castelo-Branco, Débora S C M; Leite, João J G; Moreira, Camila A; Silva, Liliane P; Cordeiro, Rossana A; Monteiro, André J; Sidrim, José J C; Rocha, Marcos F G

    2011-05-01

    In the present study, it was sought to compare yeast microbiota of wild and captive Macrobrachium amazonicum and evaluate the antifungal susceptibility and production of virulence factors by the recovered isolates of Candida spp. Additionally, cultivation water was monitored for the presence of fungi. Overall, 26 yeast isolates belonging to three genera and seven species were obtained, out of which 24 were Candida spp., with Candida famata as the most prevalent species for both wild and captive prawns. From cultivation water, 28 isolates of filamentous fungi were obtained, with Penicillium spp., Cladosporium spp. and Aspergillus spp. as the most frequent genera. Eight out of 24 Candida spp. isolates were resistant to azole derivatives, out of which four were recovered from wild-harvested prawns. As for production of virulence factors, three (12.5%) and eight (33.3%) isolates presented phospholipase and protease activity, respectively. This is the first comparative study between wild and captive prawns and the first report on yeast microbiota of M. amazonicum. The most relevant finding was the high percentage of resistant Candida spp., including from wild individuals, which suggests the occurrence of an environmental imbalance in the area where these prawns were captured. © 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.

  4. [Comparison of port needle with safety device between Huber Plus (HP) and Poly PERF Safe (PPS)].

    Science.gov (United States)

    Shimono, Chigusa; Tanaka, Atsuko; Fujita, Ai; Ishimoto, Miki; Oura, Shoji; Yamaue, Hiroki; Sato, Morio

    2010-05-01

    An embedded port is frequently used for outpatients with advanced cancer in central venous chemotherapy or hepatic arterial chemoinfusion. The port needle with a safety device in an ambulatory treatment center is indispensable for medical employees and patient plus family to reduce the risk of a needle puncture accident and to prevent iatrogenic infection. The port needle with safety system has been already introduced in our chemotherapy center. There are two types of port needle with safety device; Huber Plus (HP, Medicon Co., Ltd.) and POLY PERF Safe (PPS, Pyolax Device, Co., Ltd.). The comparison of the feasibility between HP and PPS was conducted by both medical employees and patients plus family using an inquiry score method. HP was highly regarded for its stability plus fixation and PPS for its usefulness in puncture and extraction of the needle. PPS was found to be preferable to HP based on the overall evaluation.

  5. Ulrik Huber and John Calvin: The Franeker Debate on Human Reason and the Bible (1686-1687)

    NARCIS (Netherlands)

    Goudriaan, A.

    2011-01-01

    In a doctoral dissertation De recta ratiocinatione (1686), Gisbert Wessel Duker claimed that "the divinity of Scripture cannot be demonstrated except by reason." During the promotion session at the University of Franeker, the legal scholar Ulrik Huber (1636-1694) objected to this statement by

  6. Reproductive and morphometric traits of Macrobrachium amazonicum (Decapoda: Palaemonidae) from the Pantanal, Brazil, suggests initial speciation.

    Science.gov (United States)

    Hayd, Liliam; Anger, Klaus

    2013-03-01

    The palaemonid shrimp Macrobrachium amazonicum shows an unusually large geographic range (ca. 4000km across) living in coastal, estuarine, and limnic inland habitats of the upper Amazon, Orinoco, and La Plata basins. This raises doubts whether allopatric, ecologically diverse populations belong to the same species. While shrimps from estuarine and Amazonian habitats have been studied in great detail, very little is known about hololimnetic inland populations. In the present study, biological traits related to growth (maximum body size, fresh weight, morphometric relationships) and reproduction (sex ratio; occurrence of male morphotypes; minimum sexable size; minimum size of ovigerous females; fecundity; egg size), were studied in M amazonicum collected from a pond culture and two natural freshwater habitats (Rio Miranda; Lagoa Baiazinha) in the Pantanal of Mato Grosso do Sul, Brazil. In total, 2270 shrimps were examined (603 males; 1667 females, 157 of these ovigerous). Sex ratio (males:females) was at all sampling sites strongly female-biased, ranging from 0.2-0.6. Maximum body size was larger in natural habitats compared to the pond culture, suggesting reduced growth or a shorter life span under artificial mass rearing conditions. Maximum fecundity observed in our material was 676 eggs, reached by the largest female (TL=65mm; Lagoa Baiazinha). A significant difference between slope parameters of linear regressions describing fecundity, either in terms of numbers of eggs laid or of larvae released, in relation to female fresh weight, indicates egg losses. This may be due in part to a 2.4-fold increase in egg volume occurring during the course of embryonic development, while the available space under the abdomen remains limited. Size-weight relationships differed significantly between males and females, indicating sexspecific morphometric differences. Males appear to have a more slender body shape than females, reaching thus lower weight at equal TL. When

  7. Reproductive and morphometric traits of Macrobrachium amazonicum (Decapoda: Palaemonidae from the Pantanal, Brazil, suggests initial speciation

    Directory of Open Access Journals (Sweden)

    Liliam Hayd

    2013-03-01

    Full Text Available The palaemonid shrimp Macrobrachium amazonicum shows an unusually large geographic range (ca. 4 000km across living in coastal, estuarine, and limnic inland habitats of the upper Amazon, Orinoco, and La Plata basins. This raises doubts whether allopatric, ecologically diverse populations belong to the same species. While shrimps from estuarine and Amazonian habitats have been studied in great detail, very little is known about hololimnetic inland populations. In the present study, biological traits related to growth (maximum body size, fresh weight, morphometric relationships and reproduction (sex ratio; occurrence of male morphotypes; minimum sexable size; minimum size of ovigerous females; fecundity; egg size, were studied in M. amazonicum collected from a pond culture and two natural freshwater habitats (Rio Miranda; Lagoa Baiazinha in the Pantanal of Mato Grosso do Sul, Brazil. In total, 2 270 shrimps were examined (603 males; 1 667 females, 157 of these ovigerous. Sex ratio (males:females was at all sampling sites strongly female-biased, ranging from 0.2-0.6. Maximum body size was larger in natural habitats compared to the pond culture, suggesting reduced growth or a shorter life span under artificial mass rearing conditions. Maximum fecundity observed in our material was 676 eggs, reached by the largest female (TL=65mm; Lagoa Baiazinha. A significant difference between slope parameters of linear regressions describing fecundity, either in terms of numbers of eggs laid or of larvae released, in relation to female fresh weight, indicates egg losses. This may be due in part to a 2.4-fold increase in egg volume occurring during the course of embryonic development, while the available space under the abdomen remains limited. Size-weight relationships differed significantly between males and females, indicating sexspecific morphometric differences. Males appear to have a more slender body shape than females, reaching thus lower weight at equal

  8. Effects of feeding strategy on larval development of the Amazon River prawn Macrobrachium amazonicum

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    Mariana Cutolo de Araujo

    Full Text Available ABSTRACT Effects of four feeding regimes on the development and feed intake, survival, productivity, and growth of Macrobrachium amazonicum larvae were investigated. Larvae were fed from stage II to IX, as follows: Artemia nauplii + inert diet during the entire larval cycle (AIn; Artemia nauplii for the entire larval cycle + inert diet from stage V onward (A/AIn; Artemia nauplii until stage IV + inert diet from stage IV onward (A/In; and only inert diet for the entire larval cycle (In. Each feeding regime (treatment was carried out in three 50-L rectangular black tanks, set up in a recirculating system, filled with 10 salinity brackish water, and stocked at 81.8±0.8 larvae/L. The larval stage index, occurrence of Artemia nauplii and/or inert feed into the digestive tract, survival (number of larvae and postlarvae, productivity (number of postlarvae/L, and weight gain (mg were evaluated. Larval development was similar in treatments AIn, A/Ain, and A/In, but was delayed in treatment In. Artemia nauplii were ingested by larvae irrespective of developmental stages, while inert feed was ingested only from stage III onward. Survival and productivity were higher in treatment AIn and decreased according to the number of days larvae were fed Artemia nauplii. Macrobrachium amazonicum larvae are omnivorous and polytrophic, but live feed is essential in the first stages and act as a complementary diet in the last half of larval cycle. There is a potential for inert diet to replace Artemia in the last phase of development if the nutrient composition matches larvae requirements. The combination of Artemia nauplii and inert diet during all larval cycles is the best management to maximize productivity.

  9. Toxicity of cryoprotectants agents in freshwater prawn embryos of Macrobrachium amazonicum.

    Science.gov (United States)

    Ferreira, Arthur Vinícius Lourenço; Castro, Elias José Teles; Barbosa, Mariana Silva Alves; de Sousa, Míriam Luzia Nogueira Martins; de Araújo Neto, Manoel Paiva; Filho, Aldeney Andrade Soares; de Souza Sampaio, Celia Maria

    2015-12-01

    The process of cooling and cryopreservation of prawn embryos is a viable alternative for a continuous supply of larvae for freshwater prawn farming ponds. However, studies involving the application of those techniques as well as on toxicity of cryoprotectants in freshwater prawn embryos are scarce. Thus, this study aims to test the toxicity of methylic alcohol (MET), dimethyl sulfoxide (DMSO) and ethylene glycol (EG) on Macrobrachium amazonicum embryos. For the present experiment, pools of embryos were taken from 15 M. amazonicum females and were divided into three groups and tested in duplicate at concentrations of 10, 5, 3; 1, 0.5 or 0.1%. Toxicity tests were conducted for 24 h in Falcon® pipes to obtain the lethal concentration for 50% of the larvae (LC50). After the set period for testing, random samples of embryos were removed for morphological analysis under stereoscopic microscopes. Results were analysed using analysis of variance (ANOVA) and Tukey's test at a 5% significance level and Trimmed Spearman-Karber Analysis to determine LC50-24 h. DMSO toxicity tests revealed that 5% and 10% concentrations showed the highest toxicity and differed from the control (P ≤ 0.05), 24h-LC50 was 437.4 ± 14.4 µL. MET was less toxic among the tested cryoprotectants and concentrations did not allow the determination of its LC50-24h. For tests with EG, concentrations of 3, 5 or 10% solutions resulted in a 100% mortality to tested embryos; EG was the tested cryoprotectant with the highest toxicity, with an LC50-24h average of 81.91 ± 35.3 µl.

  10. Vibrio spp. from Macrobrachium amazonicum prawn farming are inhibited by Moringa oleifera extracts.

    Science.gov (United States)

    Brilhante, Raimunda Sâmia Nogueira; Sales, Jamille Alencar; de Souza Sampaio, Celia Maria; Barbosa, Francisco Geraldo; de Araújo Neto Paiva, Manoel; de Melo Guedes, Glaucia Morgana; de Alencar, Lucas Pereira; de Ponte, Yago Brito; de Jesus Pinheiro Gomes Bandeira, Tereza; Moreira, José Luciano Bezerra; de Souza Collares Maia Castelo-Branco, Débora; de Aquino Pereira-Neto, Waldemiro; de Aguiar Cordeiro, Rossana; Sidrim, José Júlio Costa; Rocha, Marcos Fábio Gadelha

    2015-11-01

    To investigate the in vitro antimicrobial potential of extracts of stem, leaves, flowers, pods and seeds of Moringa oleifera (M. oleifera) against Vibrio spp. from hatchery water and the prawn Macrobrachium amazonicum. The ethanol extracts of stem, leaves, pods and seeds and chloroform extract of flowers of M. oleifera were tested against Vibrio cholerae (V. cholerae) serogroups non-O1/non-O139 (n = 4), Vibrio vulnificus (n = 1) and Vibrio mimicus (n = 1). Escherichia coli (E. coli) (ATCC(®) 25922) was used as quality control. Vibrio species were obtained from Macrobrachium amazonicum prawns and from hatchery water from prawn farming. The Minimum Inhibitory Concentration (MIC) was determined by broth microdilution method. The best result was obtained with the ethanol extract of pods, which inhibited three strains of the V. cholerae, Vibrio vulnificus, Vibrio mimicus and E. coli (MIC range 0.312-5.000 mg/mL). The chloroform extract of flowers was effective against all V. cholerae strains and E. coli (MIC range 0.625-1.250 mg/mL). However, the ethanol extracts of stem and seeds showed low effectiveness in inhibiting the bacterial growth. The extracts of pods, flowers and leaves of M. oleifera have potential for the control of Vibrio spp. Further studies are necessary to isolate the bioactive compounds responsible for this antimicrobial activity. Copyright © 2015 Hainan Medical College. Production and hosting by Elsevier B.V. All rights reserved.

  11. Reproductive and morphometric traits of Macrobrachium amazonicum (Decapoda: Palaemonidae from the Pantanal, Brazil, suggests initial speciation

    Directory of Open Access Journals (Sweden)

    Liliam Hayd

    2013-03-01

    Full Text Available The palaemonid shrimp Macrobrachium amazonicum shows an unusually large geographic range (ca. 4 000km across living in coastal, estuarine, and limnic inland habitats of the upper Amazon, Orinoco, and La Plata basins. This raises doubts whether allopatric, ecologically diverse populations belong to the same species. While shrimps from estuarine and Amazonian habitats have been studied in great detail, very little is known about hololimnetic inland populations. In the present study, biological traits related to growth (maximum body size, fresh weight, morphometric relationships and reproduction (sex ratio; occurrence of male morphotypes; minimum sexable size; minimum size of ovigerous females; fecundity; egg size, were studied in M. amazonicum collected from a pond culture and two natural freshwater habitats (Rio Miranda; Lagoa Baiazinha in the Pantanal of Mato Grosso do Sul, Brazil. In total, 2 270 shrimps were examined (603 males; 1 667 females, 157 of these ovigerous. Sex ratio (males:females was at all sampling sites strongly female-biased, ranging from 0.2-0.6. Maximum body size was larger in natural habitats compared to the pond culture, suggesting reduced growth or a shorter life span under artificial mass rearing conditions. Maximum fecundity observed in our material was 676 eggs, reached by the largest female (TL=65mm; Lagoa Baiazinha. A significant difference between slope parameters of linear regressions describing fecundity, either in terms of numbers of eggs laid or of larvae released, in relation to female fresh weight, indicates egg losses. This may be due in part to a 2.4-fold increase in egg volume occurring during the course of embryonic development, while the available space under the abdomen remains limited. Size-weight relationships differed significantly between males and females, indicating sexspecific morphometric differences. Males appear to have a more slender body shape than females, reaching thus lower weight at equal

  12. ESTIMATIVAS DAS PROPRIEDADES FÍSICO-MECÂNICAS DE COMPOSTOS LVL CONFECCIONADOS COM PARICÁ POR MEIO DE ULTRASSOM

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    Rafael Rodolfo de Melo

    2016-01-01

    Full Text Available This study aimed at evaluating the utilization of ultrasound nondestructive method to estimate physical and mechanical properties of laminated veneer lumber (LVL manufactured with Schizolobium amazonicum Huber ex. Ducke by ultrasound. For this, LVL boards were manufactured in laboratory. After manufacturing, the boards were nondestructively tested using ultrasound and afterwards the following physical and mechanical properties were assessed: water absorption; thickness swelling residual swelling, flatwise static bending; edgewise static bending; compression strength parallel to grain; shear strength parallel to glue-line; shear strength perpendicular to glue-line. Data about speed of sound and dynamic modulus of elasticity were used in different equations to estimate the properties evaluated. The results showed the use of ultrasound as an effective tool for prediction of most of the properties. Among the independent variables, the dynamic modulus of elasticity obtained the best results when compared to the speed of sound.

  13. Tecnologia pós-despesca dos camarões de água doce Macrobrachium rosenbergii e Macrobrachium amazonicum

    OpenAIRE

    Portella, Carolina De Gasperi [UNESP

    2009-01-01

    Macrobrachium amazonicum e Macrobrachium rosenbergii são espécies de camarão de água doce de grande importância econômica e como fontes de alimento de alto valor nutritivo. Existem poucas informações a respeito da composição química do camarão de água doce produzido no Brasil. O objetivo deste trabalho foi avaliar a composição química das duas espécies e determinar o perfil de aminoácidos de M. amazonicum. Exemplares provenientes de cultivo foram lavados e limpos (retirada cefalotórax e exoes...

  14. Acute Toxicity of Nitrite to Various Life Stages of the Amazon River Prawn, Macrobrachium amazonicum, Heller, 1862.

    Science.gov (United States)

    Dutra, Fabrício Martins; Freire, Carolina Arruda; Vaz Dos Santos, André Martins; Forneck, Sandra Carla; Brazão, Claudia Caramelo; Ballester, Eduardo Luis Cupertino

    2016-11-01

    This study determined the effects of nitrite on different life stages of the Amazon river prawn Macrobrachium amazonicum. Prawns of each life stage (postlarvae, juveniles and adults) were stocked in 24 experimental units (n = 10 prawns), under a complete randomized design. Individuals were exposed to nitrite (0, 1, 2, 4, 8 and 16 mg L -1 ). The median lethal concentration after 96 h (96 h LC 50 ) was calculated through the Weibull I. The mortality results showed that M. amazonicum is slightly less tolerant to nitrite than other species of Macrobrachium. The 96 h LC 50 for postlarvae, juveniles and adults of M. amazonicum were of 1.49, 2.36 and 2.34 mg nitrite/L, respectively. Nitrite intoxication risk quotient suggest moderated risk to low risk to the species. Usually in production systems nitrite values are lower than safe levels suggested in this study (0.1 mg L -1 to postlarvae and 0.2 mg L -1 nitrite to juvenile and adults), which makes our results appropriate for the production of this species.

  15. Length-weight relationship and condition factor of Macrobrachium amazonicum (Heller, 1862 (Decapoda, Palaemonidae from a reservoir in Bahia, Brazil

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    Sérgio Schwarz da Rocha

    Full Text Available ABSTRACT Macrobrachium amazonicum (Heller, 1862 is a freshwater prawn occurring in rivers and reservoirs of Central and South America. Given its broad geographical distribution, the species shows great intraspecific morphological, reproductive, physiological and ecological plasticity. Furthermore, it also stands out for its economic importance, especially in the states of North (Pará and Amapá and Northeast Brazil. Despite the wide geographic distribution and economic importance of M. amazonicum, the biology of this species is poorly known, particularly in Northeast Brazil. We analyzed the length-weight relationships and condition factor of males and females of M. amazonicum. Specimens were collected monthly from September 2008 to August 2009 at the Pedra do Cavalo Reservoir, city of Cabaceiras do Paraguaçu, State of Bahia. All specimens were sexed, measured and weighted. After that, length-weight relationships and the allometric (K and relative (Kr condition factors were calculated. Altogether 2,974 specimens were analyzed, 334 of which were males (11% and 2,640 were females (89%. Females were larger and heavier than males. Males and females showed isometric and negative allometric growth, respectively. Monthly variations in the condition factor were similar for both sexes, and correlated strongly with rainfall regime and temperature in the region. Such variations are not correlated with the reproductive cycle of the species, but are probably correlated with food availability and somatic growth.

  16. From rubber tree homeland to rubber tree plantation: Jacques Huber and his studies on the culture of heveas in the East (1911-1912

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    Anna Raquel de Matos Castro

    2009-12-01

    Full Text Available The paper deals with the trip of the Swiss botanist Jacques Huber (1867-1914 to the main eastern rubber producing countries between 1911 and 1912. This trip was intended to develop studies on the cultivation of Hevea brasiliensis in that region. Huber was commissioned with the task by the State of Pará governor João Coelho, who wanted to find solutions to the downfall of the regional economy. The economy of Amazonia was primarily based on rubber extractivism and was seriously endangered due the market controlled by England from eastern plantations. Back to Brazil, Huber published a report with information about the society, economy and environment where the rubber trees were cultivated. The report compiles scientific observations and the topics that motivated the regional elites in that context. In addition to the brief analyses of the report, photographs took by Huber in the East of rubber trees plantations, tree tapping and local workers are published.

  17. Adaptation to freshwater in the palaemonid shrimp Macrobrachium amazonicum: comparative ontogeny of osmoregulatory organs.

    Science.gov (United States)

    Boudour-Boucheker, Nesrine; Boulo, Viviane; Lorin-Nebel, Catherine; Elguero, Camille; Grousset, Evelyse; Anger, Klaus; Charmantier-Daures, Mireille; Charmantier, Guy

    2013-07-01

    The ontogeny of osmoregulatory organs was studied in two geographically isolated populations of the palaemonid shrimp Macrobrachium amazonicum, one originating from the Amazon estuary (A) and the other from inland waters of the Pantanal (P) in northeastern and southwestern Brazil, respectively. A previous investigation had shown that the estuarine population is able to hypo-osmoregulate in seawater, whereas the hololimnetic inland population has lost this physiological function. In the present study, the structural development of the branchial chamber and excretory glands and the presence of Na(+)/K(+)-ATPase (NKA) were compared between populations and between larval and juvenile stages after exposure to two salinities representing hypo- and hypertonic environments. In the newly hatched zoea I stage of both populations, gills were absent and NKA was localized along the inner epithelium of the branchiostegite. In intermediate (zoea V) and late larval stages (decapodids), significant differences between the two populations were observed in gill development and NKA expression. In juveniles, NKA was detected in the gills and branchiostegite, with no differences between populations. At all developmental stages and in both populations, NKA was present in the antennal glands upon hatching. The strong hypo-osmoregulatory capacity of the early developmental stages in population A could be linked to ion transport along the inner side of the branchiostegite; this seemed to be absent or weak in population P. The presence of fully functional gills expressing NKA appears to be essential for efficient hyper-osmoregulation in late developmental stages during successful freshwater adaptation and colonization.

  18. Ontogenesis and functional morphology of the digestive system of the freshwater prawn, Macrobrachium amazonicum (Decapoda: Palaemonidae

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    Luciano D. Queiroz

    2011-06-01

    Full Text Available The appropriate feeding regime for larvae and post-larvae of crustacean decapods is essential for successful larval culture. Reports on the development and morphology of the mouthparts and foregut of these crustaceans have aided in the selection of appropriate larval foodstuffs and consequently increased larval survival and growth rate during development. In the present study, the functional morphology of foregut and mouthparts was investigated in larvae and post-larvae of the freshwater prawn M. amazonicum (Heller, 1862. From observations gathered on both the outer and inner feeding apparati the first stage larvae have obligatory lecithotrophy and feeding behaviour is initiated after molting to the second stage. The foregut of the larvae undergoes diverse morphological changes during larval development and the larval foregut of this species is primarily a mixing organ due to the absence of gastric mills and similar structures. After metamorphosis into post-larvae, drastic morphological changes occur in the foregut and mouthparts to adapt the animals to feed on the greater diversity of foods that are available in their new benthic habitat.

  19. Crescimento em viveiro de cultivo do camarão canela (Macrobrachium Amazonicum (Decapoda, Palaemonidae

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    Petrônio Alves Coelho

    1982-01-01

    Full Text Available Prawn growth in intensive culture ponds depends upon the cultured species and internal (nutrition state and external (pond condition factors. To obtain growth taxa in aquaculture for the "canela" prawn (Macrobrachium amazonicum, experiments were carried out at Amapá and Pernambuco, Brazil. The initial prawn population of Amapá ponds carne from different places of the Amazon river, while those from Pernambuco from hatcheries of the Departamento de Oceanografia da Universidade Federal de Pernambuco. Physico-chemical and biological analyses of the water were made at the same time. The growth rate was estimated through collections of samples of about 10% of the initial population, with measures of the orbital length of each individual. Ponds' harvests were done when most of the population presented an orbital length equal to or larger than 80 mm. The present results showed 70 mm average size after 3-4 months of the post-larvae settlement to be the ideal for harvesting, favouring the utilization of this species for intensive aquaculture. Data on correlation, orbital and total growth, and weight gain were obtained during prawn growth.

  20. Separation of acid diterpenes of Copaifera cearensis huber ex ducke by flash chromatography using potassium hydroxide impregnated silica gel

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    Pinto Angelo C.

    2000-01-01

    Full Text Available Various acid diterpenes of Copaifera cearensis Huber ex Ducke were isolated from the crude extract by flash Silica Gel/Potassium Hydroxide Chromatography. The main components were identified by GC-MS analyses. Further fractionation by reversed phase (RP semi-preparative HPLC allowed isolation and identification of minor components and provided additional spectral data of those compounds. It was possible to detect the presence of eleven acid diterpenes in addition to a sesquiterpene acid. In addition to potassium hydroxide deposition on the silica surface, the presence of Si-OK residues, resulting from a cation exchange process, was established.

  1. Ocurrence of male morphotypes of Macrobrachium amazonicum (Caridea, Palaemonidae) in a population with an entirely freshwater life cycle.

    Science.gov (United States)

    Pantaleão, J A F; Hirose, G L; Costa, R C

    2014-08-01

    This study records, for the first time, the occurrence of all four male morphotypes in a population of Macrobrachium amazonicum from a continental environment, with an entirely freshwater life cycle. The specimens studied came from the Tietê River, state of São Paulo, Brazil, and were collected in a lotic environment downstream from Ibitinga Dam. This population was compared with other continental populations, including a population from the dam itself, collected in a previous study. Four samples of 30 minutes were taken monthly, using a trap, from January to April 2011. Each male specimen was measured with respect to seven body dimensions as follows: carapace length (CL), right cheliped length (RCL), dactyl length (DCL), propodus length (PPL), carpus length (CRL), merus length (ML) and ischium length (IL). The relative growth was analyzed based on the change in growth patterns of certain body parts in relation to the independent variable CL. The four male morphotypes proposed for the species were found using morphological and morphometric analyses. Different biological characteristics were found between the populations studied. The male population of the lake of Ibitinga and from Pantanal presented mean sizes and number of morphotypes lower than the population studied here. These differences seem to be closely related to ecological characteristics of the environments inhabited by these populations. Our results supported the hypothesis that coastal and continental populations of M. amazonicum belong to the same species.

  2. Integrated multi-trophic culture of Nile tilapia (Oreochromis niloticus and Amazon river prawn (Macrobrachium amazonicum in brackish water

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    G.G. Henry-Silva

    2015-02-01

    Full Text Available The aim of this study was to assess the feasibility of integrated multi-trophic culture of Nile tilapia (Oreochromis niloticus and Amazon River prawn (Macrobrachium amazonicum in brackish water by evaluating its limnological characteristics and economic performance. The experiment was completely randomized with four treatments and four repetitions: control treatment with Nile tilapia only, stocked with 2 tilapias/m² (P2C0 and three integrated multi-trophic culture treatments stocked with 2 tilapias/m² and prawns at densities of 4, 8 and 16 prawns/m² (P2C04, P2C08 and P2C16, respectively. The limnological variables of temperature, pH, dissolved oxygen, turbidity, ammonia, orthophosphate and chlorophyll "a" were evaluated and throughout the experiment remained within the limits recommended for culture. The experiment lasted 150 days with monthly animal sampling. No significant differences were observed for total fish biomass or for fish and prawn total survival rates. However, prawn individual weight decreased as stocking density increased. Gross revenue was not significantly different between treatments, as well as profitability. The profitability was 40.1% (P2C0, 36.7% (P2C04, 41.2% (P2C08 and 50.1% (P2C16. It is concluded that although feasible from the view point of husbandry, the integrated multi-tropic culture of M. amazonicum and O. niloticus did not influence significantly profitability compared to the monoculture system.

  3. Moringa oleifera inhibits growth of Candida spp. and Hortaea werneckii isolated from Macrobrachium amazonicum prawn farming with a wide margin of safety

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    Marcos Fábio Gadelha Rocha

    2014-12-01

    Full Text Available This study aimed to evaluate the antifungal activity of M. oleifera extracts against fungi isolated from farmed prawns and test the toxicity of the extracts on larvae of Macrobrachium amazonicum. The ethanol extracts of pods, seeds, leaves, stems and flowers and chloroform extract of flowers of M. oleifera were tested against 14 strains of Candida spp. and 10 strains of Hortaea werneckii isolated from farming water and the digestive tract of M. amazonicum. Antifungal activity was determined by microdilution, based on the M27-A3 and M38-A2 CLSI documents. Toxicity was evaluated by exposing larvae of M. amazonicum at concentrations between 10-1000mg mL-1, counting dead larvae (CL50 after 24 hours. The best results were verified with the chloroform extract of flowers, acting against all tested strains, with MICs ranging from 0.019 to 2.5 mg mL-1. Ethanol extracts of leaves, flowers and seeds acted against 22/24, 21/24 and 20/24 strains, respectively. The extract of pods was only effective against strains of Candida spp. (14/24 and extract of stem only against four strains of H. werneckii (4/24. Extracts of seeds, flowers (chloroform fraction, stems and leaves showed low or no toxicity, whereas extracts of pods and flowers (ethanol fraction showed moderate toxicity. Thus, the antifungal activity of these extracts agaisnt Candida spp. and H. werneckii was observed, a wide margin of safety for larvae of M. amazonicum, demonstrating to be promising for the sustainable management of effluents from M. amazonicum farming

  4. Crescimento relativo do camarão canela Macrobrachium amazonicum (Heller (Crustacea, Decapoda, Palaemonidae em viveiros Relative growth of Amazon river prawn Macrobrachium amazonicum (Heller (Crustacea, Decapoda, Palaemonidae in earthen ponds

    Directory of Open Access Journals (Sweden)

    Patrícia M.C. Moraes-Riodades

    2002-12-01

    Full Text Available Some morphometric relationships in Macrobrachium amazonicum (Heller, 1862 reared in earthen ponds were studied. A total of 239 individuals were collected, sexed and sorted to juvenile or adult. Total length (Lt, post-orbital length (Lpo, carapace length (Lcp and queliped length (Lql were measured. The relationships Lt/Lpo, Lpo/Lcp and Lt/Lcp are the same for juveniles, males and females, indicating unchanged growth pattern during post-larval ontogenetic development. While Lt/Lpo showed isometric growth, Lpo/Lcp and Lt/Lcp showed negative allometry. On the other hand, for the Lql/Lcp relationship, juveniles showed isometric growth, females slight positive allometry and males a strong positive allometry. It suggests that the importance of chelipeds may be different in these groups. Quelipeds play important role on food capture and on agonistic, social and reproductive behavior. Therefore, inter and intraspecific interactions may change during prawn growth, even after morphological

  5. Reproductive variability of the Amazon River prawn, Macrobrachium amazonicum (Caridea, Palaemonidae: influence of life cycle on egg production

    Directory of Open Access Journals (Sweden)

    Andrea L Meireles

    2013-09-01

    Full Text Available Diverse reproductive strategies may be adopted by different species of Macrobrachium prawns, and even among different populations of the same species. The present study evaluated the influence of differences in the reproductive strategies of two geographically isolated populations of Macrobachium amazonicum, upon female fecundity, reproductive output and the chemical content of prawns and eggs. One prawn population from Pará only completes its life cycle in brackish water, whereas another from Mato Grosso do Sul only inhabits freshwater. Pará female prawns exhibited a larger average size and weight and produced more eggs than females from Mato Grosso do Sul. However, the Mato Grosso do Sul population produced eggs that were larger in volume than those of females from the other population. Furthermore, eggs produced by Pará prawns were composed primarily of water (56%, whereas those produced in Mato Grosso do Sul were composed mostly of organic matter (80%. This difference in the eggs' chemical compositions did not apply to the chemical compositions of the females, as individuals from both sites were composed primarily of water. Mato Grosso do Sul females invested a higher amount of energy in brood formation (14% of their wet weight than individuals from Pará (only 10%. It is possible that M. amazonicum populations show a higher degree of plasticity in their reproductive activity due to habitat conditions and genetic differences. Although the brackish population produces larger individuals, and exhibits higher fecundity, the freshwater population exhibited a higher reproductive investment. These results suggest a high reproductive capacity to adapt to different environmental conditions for this species, which should be considered in the context of aquaculture activities.

  6. PROPIEDADES TECNOLÓGICAS DE LA MADERA DE ALGARROBO (Hymenaea oblongifolia Huber., DE BAGADÓ-CHOCÓ, COLOMBIA

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    Yessica B. Serna Mosquera

    2011-01-01

    Full Text Available Este trabajo tuvo como objetivo determinar las propiedades tecnológicas de la madera de Hymenaea oblongifolia Huber algarrobo, proveniente del municipio de Bagadó-Chocó, Colombia. Las muestras tomadas de los árboles (cilindros de la madera fueron estudiadas para determinar las características microscópicas, la densidad básica y la densidad normal; además, se estimaron las propiedades mecánicas utilizando los valores de densidad básica. Los resultados indicaron que la madera presenta vasos escasos -de medianos a grandes-, las fibras son medianas y los radios son finos a moderadamente largos con células cristalíferas, presenta mala calidad para producción de pulpa para papel, la densidad básica de la madera se clasificó como semipesada, y presenta una resistencia mecánica que varía de alta a muy alta. Puede utilizarse en la elaboración de pisos, muebles y mangos decorativos, entre otros usos.

  7. Fecundidad y fertilidad de Macrobrachium amazonicum (Héller 1862 (Decápoda, Palaemonidae del Piedemonte Llanero Colombiano

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    Elizabeth Aya-Baquero

    2013-11-01

    Full Text Available Objetivo. Determinar la fecundidad y fertilidad de Macrobrachium amazonicum del Piedemonte llanero. Materiales y métodos. Los animales fueron capturados en una granja piscícola del municipio de Restrepo-Meta, Colombia y llevados a la estación piscícola del Instituto de Acuicultura, Universidad de los Llanos. Se utilizaron hembras ovígeras a las cuales se les determinó el peso corporal (g y longitud total (mm, así como su fecundidad (número de huevos/ hembra y fertilidad (número de larvas/hembra. En los huevos se midieron el diámetro y longitud, para calcular su volumen. Resultados. La fecundidad varió entre 120 a 549 huevos con una media de 331 ± 93. Con respecto a la fertilidad, las hembras evaluadas tuvieron 287 ± 19 larvas, con un intervalo entre 102 a 703. Tanto para fecundidad como para fertilidad se observó que existe una relación lineal positiva significativa (r2 entre 0.85 y 0.91 con respecto al peso corporal y la longitud total de las hembras (p< 0.001. El diámetro de los huevos fue de 750.7 ± 2.9 μm (rango: 500 – 1000 μm y el largo 974.2 ± 3.6 μm (525 – 1200 μm. El tamaño de los huevos fue de 296.2 ± 9.7 μm3. Conclusiones. Los valores de la fecundidad y fertilidad para Macrobrachium amazonicum en el Piedemonte llanero son inferiores a los resultados obtenidos en otros estudios; sin embargo, el tamaño de sus huevos es mayor. Los resultados permiten inferir que la especie se reproduce durante todo el año y que su fácil manejo permitiría su cultivo en cautiverio.

  8. Alocação de recursos (carboidratos no desenvolvimento inicial de plântulas de Schizolobium parahyba (Vell. S.F. Blake (Fabaceae - Caesalpinioideae Resource allocation (carbohydrates in the inicial development of seedlings of Schizolobium parahyba (Vell. S.F. Blacke (Fabaceae - Caesalpinioideae

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    Emanuela Wehmuth Alves Weidlich

    2010-08-01

    Full Text Available Utilizou-se Schizolobium parahyba, objetivando analisar a alocação dos teores de açúcares solúveis totais e de reserva (amido e biomassas no desenvolvimento das plântulas. Após a quebra de dormência, 200 sementes foram semeadas em substrato composto por casca de arroz carbonizada e areia. Em cada coleta foram utilizadas 10 amostras para dosagem de açúcares solúveis totais e amido e 10 para mensuração das massas frescas e secas (MS e MF no 7º, 14º, 21º, 28º, 35º e 42º dia após a germinação (DAG. As sementes apresentaram 94,5% de germinação. Os açúcares solúveis totais estão em maiores quantidades nas raízes, hipocótilo e epicótilos. Os cotilédones apresentaram maiores teores de amido, já que este é um órgão de reserva. O aumento da MF é diretamente proporcional ao incremento de açúcares solúveis e amido nas estruturas analisadas. As relações de biomassa e teores de açúcares solúveis totais e amido encontrados ressaltaram a mobilização dos compostos de reserva dos cotilédones nas outras partes da planta, à medida que a redução da biomassa e de açúcares dos cotilédones reflete o aumento na produção de biomassa de epicótilos, hipocótilos e raízes da plântula.The allocation of resources in Schizolobium parahyba was analyzed measuring the total soluble sugars, starch levels and biomass. After breaking dormancy, 200 seeds were sown in substrate composed of rice rind and sand (1:1. Ten seedlings were collected to measure the soluble sugar and starch level and ten were used to measure the fresh biomass (MF and dry biomass (MS on the 7, 14, 21, 28, 35 and 42 days after germination (DAG. The seeds showed a 94.5% germination rate. The total soluble sugar levels were greater in roots, stems and epicotyls. The cotyledons had the greatest starch level because they are the store organs of this plant. The increase of MF is directly proportional to the increment of total soluble sugars and. The relation

  9. Produção de pós-larvas de Macrobrachium amazonicum (Heller, 1862 (Decapoda, Palaemonidae, sob condições controladas de laboratório

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    Aline Do Vale Barreto

    1982-01-01

    Full Text Available Studies on production of post-larvae of the prawn Macrobrachium amazonicum under controlled laboratory conditions were developed at the Departamento de Oceanografia da Universidade Federal de Pernambuco, from September 1980 to February 1982. Experiments were undertaken in aquaria and tanks where the salinity and density of the populations had been changed. The best production was obtained with salinity 14/00 with a density of 38 larvae per litre. The food provided for larvae was crushed fish and nauplii of Artemia salina. Out of 13 experiments a total of 20,000 post-larvae of Macrobrachium amazonicum were obtained.

  10. Experimental study on the efficiency of different types of traps and baits for harvesting Macrobrachium amazonicum (Heller, 1862

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    Bianca Bentes

    2014-10-01

    Full Text Available Macrobrachium amazonicum is a freshwater prawn endemic to South America with wide distribution in Brazilian Amazon rivers. In estuary and freshwater streams of the Pará State, they are captured with different types of traps locally know matapi. This study evaluated the efficiency of traps of different sizes (large, medium and small and baits (babassu coconut and fish for sampling this shrimp. Samplings were conducted with 24 traps with different treatments (trap size and bait. We captured 909 specimens. Higher mean catches were observed in traps baited with babassu coconut. Interactions between babassu coconut bait and medium matapi (BM-M, and fish bait and large matapi (FISH-L were significant. Carapace length (CL varied significantly between sites (F = 12.74, p < 0.01. The total maximum length was13.65 cm. Medium traps baited with babassu coconut were the most successful in the tested combinations, however, there was a clear correlation between size trap and size of shrimp, for both body weight and carapace length.

  11. Ocurrence of male morphotypes of Macrobrachium amazonicum (Caridea, Palaemonidae in a population with an entirely freshwater life cycle

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    JAF Pantaleão

    Full Text Available This study records, for the first time, the occurrence of all four male morphotypes in a population of Macrobrachium amazonicumfrom a continental environment, with an entirely freshwater life cycle. The specimens studied came from the Tietê River, state of São Paulo, Brazil, and were collected in a lotic environment downstream from Ibitinga Dam. This population was compared with other continental populations, including a population from the dam itself, collected in a previous study. Four samples of 30 minutes were taken monthly, using a trap, from January to April 2011. Each male specimen was measured with respect to seven body dimensions as follows: carapace length (CL, right cheliped length (RCL, dactyl length (DCL, propodus length (PPL, carpus length (CRL, merus length (ML and ischium length (IL. The relative growth was analyzed based on the change in growth patterns of certain body parts in relation to the independent variable CL. The four male morphotypes proposed for the species were found using morphological and morphometric analyses. Different biological characteristics were found between the populations studied. The male population of the lake of Ibitinga and from Pantanal presented mean sizes and number of morphotypes lower than the population studied here. These differences seem to be closely related to ecological characteristics of the environments inhabited by these populations. Our results supported the hypothesis that coastal and continental populations of M. amazonicum belong to the same species.

  12. Na,K-ATPase activity and epithelial interfaces in gills of the freshwater shrimp Macrobrachium amazonicum (Decapoda, Palaemonidae).

    Science.gov (United States)

    Belli, N M; Faleiros, R O; Firmino, K C S; Masui, D C; Leone, F A; McNamara, J C; Furriel, R P M

    2009-03-01

    Diadromous freshwater shrimps are exposed to brackish water both as an obligatory part of their larval life cycle and during adult reproductive migration; their well-developed osmoregulatory ability is crucial to survival in such habitats. This study examines gill microsomal Na,K-ATPase (K-phosphatase activity) kinetics and protein profiles in the freshwater shrimp Macrobrachium amazonicum when in fresh water and after 10-days of acclimation to brackish water (21 per thousand salinity), as well as potential routes of Na+ uptake across the gill epithelium in fresh water. On acclimation, K-phosphatase activity decreases 2.5-fold, Na,K-ATPase alpha-subunit expression declines, total protein expression pattern is markedly altered, and enzyme activity becomes redistributed into different density membrane fractions, possibly reflecting altered vesicle trafficking between the plasma membrane and intracellular compartments. Ultrastructural analysis reveals an intimately coupled pillar cell-septal cell architecture and shows that the cell membrane interfaces between the external medium and the hemolymph are greatly augmented by apical pillar cell evaginations and septal cell invaginations, respectively. These findings are discussed regarding the putative movement of Na+ across the pillar cell interfaces and into the hemolymph via the septal cells, powered by the Na,K-ATPase located in their invaginations.

  13. Larval Pseudoproleptus sp. (Nematoda: Cystidicolidae) found in the Amazon river prawn Macrobrachium amazonicum (Decapoda: Palaemonidae) in Brazil.

    Science.gov (United States)

    Moravec, Frantisek; Santos, Cláudia P

    2009-06-01

    Previously undescribed infective larvae of the cystidicolid nematode Pseudoproleptus sp. (probably conspecific with the nematode originally described as Heliconema izecksohni Fabio, 1982, a parasite of freshwater fish in Brazil), were found encapsulated in the hemocel of the Amazon river prawn Macrobrachium amazonicum (Heller) (Decapoda: Palaemonidae) from the natural canals on the Mexiana Island (Amazon River Delta), Pardá State, Brazil. The prevalence in prawns (body length 48-110 mm) examined in January and March 2008 (n = 44) was 32%, with an intensity of 1-6 (mean 2) larvae per crustacean. The nematode larvae (body length 19.7-25.7 mm), characterized by the cephalic end provided with a helmet-like cuticular structure having a thickened free posterior margin, are described based on light and scanning electron microscopy. Apparently prawns play a role as intermediate hosts for this nematode species. This is the first record of a larval representative of Cystidicolidae in South America and the first record of a species of Pseudoproleptus Khera, 1955, in the Neotropics. Heliconema izecksohni is transferred to Pseudoproleptus as Pseudoproleptus izecksohni (Fabio, 1982) n. comb.

  14. O DESENVOLVIMENTO OVOCITÁRIO EM Macrobrachium amazonicum(Heller, 1862)(CRUSTACEA: DECAPODA: PALAEMONIDAE), CAMARÃO DULCÍCOLA DA REGIÃO AMAZÔNICA

    OpenAIRE

    CHAVES, Paulo de Tarso da C.; MAGALHÃES, Célio

    1993-01-01

    É descrito o desenvolvimento ovocitário em Macrobrachium amazonicum(Heller, 1862), um camarão dulcícola da família Palaemonidae da Amazônia Central. O seu desenvolvimento é semelhante ao de Macrobrachium acanthurus(Wiegmann, 1836). As fases iniciais do desenvolvimento ocupam a região intema do ovario, enquanto que as fases vitelogênica e madura situam-se perifericamente. São descritas ainda a morfologia dos folículos pós-ovulatórios e das células foliculares. The oocyte development in Macr...

  15. O DESENVOLVIMENTO OVOCITÁRIO EM Macrobrachium amazonicum(Heller, 1862)(CRUSTACEA: DECAPODA: PALAEMONIDAE), CAMARÃO DULCÍCOLA DA REGIÃO AMAZÔNICA

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    CHAVES,Paulo de Tarso da C.; MAGALHÃES,Célio

    1993-01-01

    É descrito o desenvolvimento ovocitário em Macrobrachium amazonicum(Heller, 1862), um camarão dulcícola da família Palaemonidae da Amazônia Central. O seu desenvolvimento é semelhante ao de Macrobrachium acanthurus(Wiegmann, 1836). As fases iniciais do desenvolvimento ocupam a região intema do ovario, enquanto que as fases vitelogênica e madura situam-se perifericamente. São descritas ainda a morfologia dos folículos pós-ovulatórios e das células foliculares.

  16. OCORRÊNCIA DE Macrobrachium amazonicum (CRUSTACEA, DECAPODA) NA DIETA DE Lysapsus bolivianus (ANURA, HYLIDAE).

    OpenAIRE

    Mayara Fabiana Melo Furtado; Carlos Eduardo Costa-Campos; Suelique Souza Queiroz; Kelly Juliana Gaya Correa; Inacia Maria Vieira

    2013-01-01

    A dieta de Lysapsus bolivianus está baseada principalmente em pequenos artrópodes, representados geralmente por Diptera, Collembola e Hemiptera, sendo os crustáceos encontrados ocasionalmente. No presente trabalho registramos a presença de Macrobrachium amazonicum na dieta de L. bolivianus em planície de Inundação no Norte do Brasil. Palavras-chave: dieta, Crustacea, Amazônia Oriental. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v3n3p185-187

  17. Interactions entre le parasite Probopyrus bithynus (Isopoda, Bopyridae) et l'un de ses hôtes, la crevette Macrobrachium amazonicum (Decapoda, Palaemonidae)

    OpenAIRE

    Odinetz Collart, Olga

    1990-01-01

    Specimens of the prawn #Macrobrachium amazonicum$ (Heller, 1862), parsitized by the isopod #Probopyrus bithynis$ Richardson, 1904, were collected in the Lower Tocantins, Para, up to 300 km from the ocean. All the infested prawns displayed external sexual characters of the immature female. Of the prawns 99,6% carried a single parasite couple in either the right or in the left branchial cavity. The infestation level in the female host population varied between 1.6% and 7.1% in Camera and betwee...

  18. Identification of 5-hydroxy-tryptamine (bufotenine) in takini (Brosimumacutifolium Huber subsp. acutifolium C.C. Berg, Moraceae), a shamanic potion used in the Guiana Plateau.

    Science.gov (United States)

    Moretti, Christian; Gaillard, Yvan; Grenand, Pierre; Bévalot, Fabien; Prévosto, Jean-Michel

    2006-06-30

    This paper is the first thorough analysis of takini, a hallucinogen used by the shamans of several peoples in Suriname, French Guiana, and the region east of the Para in Brazil. The drug is contained in the latex of the Brosimum acutifolium tree, and until now, its psychotropic properties appeared inconsistent with the more general medicinal uses of the tree in the surrounding region. Our chemical and botanical studies reveal that the active ingredient of takini is bufotenine; and that this compound is only contained in the subspecies Brosimum acutifolium Huber subsp. acutifolium C.C. Berg that is found in the same area of the eastern Guianas.

  19. INFLUENCE OF YEAST AND YEAST DERIVATIVES ON GROWTH PERFORMANCE AND SURVIVAL OF JUVENILE PRAWN Macrobrachium amazonicum INFLUÊNCIA DA LEVEDURA E DERIVADOS SOBRE O DESEMPENHO E SOBREVIVÊNCIA DE JUVENIS DO CAMARÃO Macrobrachium amazonicum

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    Hamilton Hisano

    2008-10-01

    Full Text Available

    Avaliaram-se a suplementação de levedura íntegra Saccharomyces cerevisiae e derivados do seu processamento (levedura autolisada, mananoligossacarídeo e β-glucano, desidratadas pelo método de spray dry, em rações para juvenis de camarão amazônico. Indivíduos com peso inicial (1,27 ± 0,07 g e comprimento inicial (5,49 ± 0,09 cm foram alojados em aquários de 200 L (10 camarões/aquário dotados de recirculação de água com temperatura controlada, durante o período de sessenta dias. O delineamento experimental foi inteiramente casualizado com cinco tratamentos e quatro repetições. Formularam-se as rações para serem isoproteícas (35 % PB e isoenergéticas (3.500kcal/kg EB, suplementadas com 2,0 %, de levedura íntegra, 2,0 % de levedura autolisada, 0,2 % de mananoligosacarídeo e 0,2 % de β-glucano. A ração-controle se caracterizou pela não-suplementação dos diferentes aditivos alimentares. Os juvenis de camarão alimentados com mananoligossacarídeo apresentaram ganho de peso superior (P<0,05 aos alimentados com outras rações. Os resultados indicam que a suplementação de 0,2 % de mananoligossacarídeo proporciona melhores resultados de desempenho aos juvenis de M. amazonicum.

    PALAVRAS-CHAVES: Aqüicultura, camarão amazônico, glucano, manano.

    Supplements of whole yeast spray dried Saccharomyces cerevisiae and yeast derivatives (autolyzed yeast, mannanoligosaccharide and β-glucan in to diets fed to juvenile Amazon River prawn were evaluated. Prawns with initial weight (1.27 ± 0.07 g and initial length (5.49 ± 0.09 cm were stocked in to 200 L aquaria (10 prawns/aquarium, in flow-through water system with controlled temperature, during 60 days. The experimental design was completely randomized with

  20. Population structure and relative growth of the Amazon shrimp Macrobrachium amazonicum (Heller, 1862 (Decapoda: Palaemonidae on two islands in the fluvial-estuarine plain of the Brazilian Amazon

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    Priscila Sousa Vilela da Nóbrega

    Full Text Available This study aimed to describe the population structure of the Amazon shrimp Macrobrachium amazonicum, as well as their relative growth between the length of the cephalothorax and the total length, and between the length of the cephalothorax and the total mass of shrimps of a fluvial-estuarine plain in the State of Pará. Shrimps were sampled monthly from August 2006 to July 2007, using trawl nets, taking three replicates at each site (Arapiranga and Mosqueiro per month, totaling 72 replicates. We caught 5,510 specimens, being 90.90% from Arapiranga Island and 9.1% from Mosqueiro Island. The highest densities occurred in July (1.33 individuals/m², at the beginning of the dry season and in December (1.66 individuals/m², at the beginning of the rainy season. The morphometric analysis for separate and grouped sexes resulted in negative and positive allometric growth. Ovigerous females were observed in all months, indicating continuous reproduction and the majority (67.81% was caught during the less rainy season. The abundance and continuous reproduction of M. amazonicum show that this estuary offers conditions for the proper development of this population.

  1. ABUNDANCE AND MORPHOMETRIC RELATIONSHIPS OF AMAZON SHRIMP - Macrobrachium amazonicum (HELLER 1862 (DECAPODA, PALAEMONIDAE - IN AN AMAZON ESTUARY - NORTH COAST OF BRAZIL

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    Bianca Bentes da Silva

    2016-12-01

    Full Text Available From Macrobrachium amazonicum (Heller, 1862 (Decapoda, Palaemonidae abundance in monthly collections in the Amazon estuary and on Mosqueiro Island (State of Pará, Brazil between April 2006 and August 2007, we verified that the site mentioned is favorable to the development of the species, since there is a significant number of young and adults specimens throughout the year, whose abundance is significantly higher in the dry season. Icoaraci was the site of great contribution in the total of specimens caught, relating this productivity to the large amount of organic matter in suspension. In this study, we found the largest M. amazonicum specimen ever collected, comparing to those mentioned by available scientific literature. The individual was a female caught on Combu Island with 44.72 mm carapace length or 18.45 cm total length. Relations of body mass (g vs. carapace length (mm for males, females and sexes together had negative allometry, which can be associated to the gonadal maturation cycle of the species. All other morphometric relationships showed positive allometry. Keywords. carapace; bio-ecology; population dynamics.

  2. Effect of salinity on the metabolism and osmoregulation of selected ontogenetic stages of an Amazon population of Macrobrachium amazonicum shrimp (Decapoda, Palaemonidae).

    Science.gov (United States)

    Mazzarelli, C C M; Santos, M R; Amorim, R V; Augusto, A

    2015-05-01

    Probably as a function of their wide geographical distribution, the different population of Macrobrachium amazonicum shrimp may present distinct physiological, biochemical, reproductive, behavioral, and ecological patterns. These differences are so accentuated that the existence of allopatric speciation has been suggested, although initial studies indicate that the genetic variability of populations happen at an intraspecific level. Among the biological responses described for M. amazonicum populations, those regarding osmoregulation and metabolism play a key role for being related to the occupation of diverse habitats. To this effect, we investigated osmoregulation through the role of free amino acids in cell volume control and metabolism, through oxygen consumption in larvae (zoeae I, II, V and IX) and/or post-larvae of a M. amazonicum population from Amazon, kept in aquaculture fish hatcheries in the state of São Paulo. The results add information regarding the existence of distinct physiological responses among M. amazonicum populations and suggest that possible adjustments to metabolism and to the use of free amino acids as osmolytes of the regulation of the larvae and post-larvae cell volume depend on the appearance of structures responsible for hemolymph osmoregulation like, for example, the gills. In this respect, we verified that zoeae I do not alter their metabolism due to the exposition to fresh or brackish water, but they reduce intracellular concentration of free amino acids when exposed to fresh water, what may suggest the inexistence or inefficient performance of the structures responsible for volume regulation and hemolymph composition. On the other hand, in zoeae II and V exposed to fresh and brackish water, metabolism alterations were not followed by changes in free amino acids concentration. Thus it is possible, as the structures responsible for osmoregulation and ionic regulation become functional, that the role of free amino acids gets

  3. Effect of salinity on the metabolism and osmoregulation of selected ontogenetic stages of an amazon population of Macrobrachium amazonicum shrimp (Decapoda, Palaemonidae

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    CCM. Mazzarelli

    Full Text Available Probably as a function of their wide geographical distribution, the different population of Macrobrachium amazonicum shrimp may present distinct physiological, biochemical, reproductive, behavioral, and ecological patterns. These differences are so accentuated that the existence of allopatric speciation has been suggested, although initial studies indicate that the genetic variability of populations happen at an intraspecific level. Among the biological responses described for M. amazonicum populations, those regarding osmoregulation and metabolism play a key role for being related to the occupation of diverse habitats. To this effect, we investigated osmoregulation through the role of free amino acids in cell volume control and metabolism, through oxygen consumption in larvae (zoeae I, II, V and IX and/or post-larvae of a M. amazonicum population from Amazon, kept in aquaculture fish hatcheries in the state of São Paulo. The results add information regarding the existence of distinct physiological responses among M. amazonicum populations and suggest that possible adjustments to metabolism and to the use of free amino acids as osmolytes of the regulation of the larvae and post-larvae cell volume depend on the appearance of structures responsible for hemolymph osmoregulation like, for example, the gills. In this respect, we verified that zoeae I do not alter their metabolism due to the exposition to fresh or brackish water, but they reduce intracellular concentration of free amino acids when exposed to fresh water, what may suggest the inexistence or inefficient performance of the structures responsible for volume regulation and hemolymph composition. On the other hand, in zoeae II and V exposed to fresh and brackish water, metabolism alterations were not followed by changes in free amino acids concentration. Thus it is possible, as the structures responsible for osmoregulation and ionic regulation become functional, that the role of free amino

  4. A Robust Algorithm of Multiquadric Method Based on an Improved Huber Loss Function for Interpolating Remote-Sensing-Derived Elevation Data Sets

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    Chuanfa Chen

    2015-03-01

    Full Text Available Remote-sensing-derived elevation data sets often suffer from noise and outliers due to various reasons, such as the physical limitations of sensors, multiple reflectance, occlusions and low contrast of texture. Outliers generally have a seriously negative effect on DEM construction. Some interpolation methods like ordinary kriging (OK are capable of smoothing noise inherent in sample points, but are sensitive to outliers. In this paper, a robust algorithm of multiquadric method (MQ based on an Improved Huber loss function (MQ-IH has been developed to decrease the impact of outliers on DEM construction. Theoretically, the improved Huber loss function is null for outliers, quadratic for small errors, and linear for others. Simulated data sets drawn from a mathematical surface with different error distributions were employed to analyze the robustness of MQ-IH. Results indicate that MQ-IH obtains a good balance between efficiency and robustness. Namely, the performance of MQ-IH is comparative to those of the classical MQ and MQ based on the Classical Huber loss function (MQ-CH when sample points follow a normal distribution, and the former outperforms the latter two when sample points are subject to outliers. For example, for the Cauchy error distribution with the location parameter of 0 and scale parameter of 1, the root mean square errors (RMSEs of MQ-CH and the classical MQ are 0.3916 and 1.4591, respectively, whereas that of MQ-IH is 0.3698. The performance of MQ-IH is further evaluated by qualitative and quantitative analysis through a real-world example of DEM construction with the stereo-images-derived elevation points. Results demonstrate that compared with the classical interpolation methods, including natural neighbor (NN, OK and ANUDEM (a program that calculates regular grid digital elevation models (DEMs with sensible shape and drainage structure from arbitrarily large topographic data sets, and two versions of MQ, including the

  5. A kinetic characterization of the gill V(H(+))-ATPase in juvenile and adult Macrobrachium amazonicum, a diadromous palaemonid shrimp.

    Science.gov (United States)

    Lucena, Malson N; Pinto, Marcelo R; Garçon, Daniela P; McNamara, John C; Leone, Francisco A

    2015-03-01

    Novel kinetic properties of a microsomal gill V(H(+))-ATPase from juvenile and adult Amazon River shrimp, Macrobrachium amazonicum, are described. While protein expression patterns are markedly different, Western blot analysis reveals a sole immunoreactive band, suggesting a single V(H(+))-ATPase subunit isoform, distributed in membrane fractions of similar density in both ontogenetic stages. Immunofluorescence labeling locates the V(H(+))-ATPase in the apical regions of the lamellar pillar cells in both stages in which mRNA expression of the V(H(+))-ATPase B-subunit is identical. Juvenile (36.6±3.3 nmol Pi min(-1) mg(-1)) and adult (41.6±1.3 nmol Pi min(-1) mg(-1)) V(H(+))-ATPase activities are similar, the apparent affinity for ATP of the adult enzyme (K0.5=0.21±0.02 mmol L(-1)) being 3-fold greater than for juveniles (K0.5=0.61±0.01 mmol L(-1)). The K0.5 for Mg(2+) interaction with the juvenile V(H(+))-ATPase (1.40 ± 0.07 mmol L(-1)) is ≈6-fold greater than for adults (0.26±0.02 mmol L(-1)) while the bafilomycin A1 inhibition constant (KI) is 45.0±2.3 nmol L(-1) and 24.2±1.2 nmol L(-1), for juveniles and adults, respectively. Both stages exhibited residual bafilomycin-insensitive ATPase activity of ≈25 nmol Pi min(-1) mg(-1), suggesting the presence of ATPases other than the V(H(+))-ATPase. These differences may reflect a long-term regulatory mechanism of V(H(+))-ATPase activity, and suggest stage-specific enzyme modulation. This is the first kinetic analysis of V(H(+))-ATPase activity in different ontogenetic stages of a freshwater shrimp and allows better comprehension of the biochemical adaptations underpinning the establishment of palaemonid shrimps in fresh water. Copyright © 2014. Published by Elsevier Inc.

  6. The stage of ovarian development affects organ expression of vitellogenin as well as the morphometry and ultrastructure of germ cells in the freshwater prawn Macrobrachium amazonicum (Heller, 1862).

    Science.gov (United States)

    Ferreira, M A P; Resende, B M; Lima, M Y S; Santos, S S D; Rocha, R M

    2012-09-15

    The objective was to characterize vitellogenin expression in the ovary and hepatopancreas, and to describe the morphometry and ultrastructure of oocytes, in the freshwater prawn Macrobrachium amazonicum at various stages of ovarian development. Five ovarian stages were defined: (I) immature, (II) maturing, (III) mature, (IV) spawned, and (V) reorganized. Ovaries and hepatopancreas were analyzed by immunohistochemistry for vitellogenin expression. Vitellogenin expression in both ovary and hepatopancreas was predominantly widespread, beginning at Stage I, peaking at Stage III, and decreasing in Stages IV and V. Characterization of the ovary included measurement of the following germ cell types: oogonia (OG), and previtellogenic (PV), early vitellogenesis (EV), advanced vitellogenesis (AV), and mature (M) oocytes. Mean ± SD diameter of OG and EV oocytes in Stages I (14.2 ± 5.5 and 119.8 ± 15.7 μm) and II (17.9 ± 4.8 and 114.3 ± 34.6 μm), respectively, were significantly different from that in Stages IV (16.6 ± 4.7 and 107.0 ± 24.6 μm) and V (14.4 ± 4.1 and 101.0 ± 25.2 μm). Both scanning and transmission electron microscopy enabled identification of EV, AV and M oocytes based on the presence of a nucleus, and the organization and distribution of yolk in the cytoplasm. In summary, vitellogenesis occurred both in the hepatopancreas and ovary, with the ovary expressing vitellogenin starting as early as Stage I. This process promoted accumulation of yolk and growth of oocytes, thus favoring sexual maturation of females. This knowledge may be applied to improve production of farmed M. amazonicum. Copyright © 2012 Elsevier Inc. All rights reserved.

  7. CONTRIBUIÇÃO DOS ATRIBUTOS QUÍMICOS DO SOLO NO DESENVOLVIMENTO VEGETATIVO DO PARICÁ EM DIFERENTES SISTEMAS DE CULTIVO

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    Possidônio Guimarães Rodrigues

    2016-01-01

    Full Text Available This study aimed to evaluate some chemical components of an Oxisol and the relationship with the vegetative development of paricá [ Schizolobium amazonicum (Huber ex Ducke] in different cropping systems in reforestation areas in the municipality of Tailandia, northeast paraense. Evaluated the PP [paricá x pueraria ( Pueraria phaseoloides ], PA [paricá x acacia ( Acacia mangium ] and P (monoculture paricá systems conducted in 5 years by the company G.M. Sufredini Industrial LTDA and collected soil samples at a depth of 0-20 cm for analysis of pH, total C and N, H + Al, available P, exchangeable Ca, Mg, K and Al and calculated values of C/N, SB, T, V and m. The vegetative development of paricá was assessed by survival, mortality and the number of defective plants beyond the DBH. The results showed that the increase in nitrogen content of the soil in PP treatment, the low soil fertility in PA treatment, but where paricá achieved the highest average in diameter (DBH = 16.64 cm and greater survival rate in P treatment (90.63%. It was concluded that the soil-plant relationship in paricá and pueraria systems and monoculture paricá contributed to the establishment of individuals paricá.

  8. FUNGOS MICORRÍZICOS ARBUSCULARES E ADUBAÇÃO FOSFATADA NA PRODUÇÃO DE MUDAS DE PARICÁ

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    Vanessa Nascimento Brito

    2017-01-01

    Full Text Available The recovery of degraded ecosystems demands research with native species that can support forest restoration programs. The production of seedlings with native tree species in association with soil microorganisms is an important technique for the rehabilitation of these environments. This study aimed to evaluate the effects of inoculation with arbuscular mycorrhizal fungi (AMF and phosphorus nutrition on growth and nutrient content of paricá seedlings [ Schizolobium parahyba var. amazonicum (Huber ex Ducke Barneby]. The experiment was conducted in a greenhouse for a period of 75 days, using a completely randomized design in a factorial 4x4, inoculation with AMF: Rhizophagus clarus , Gigaspora margarita , mixed inoculum ( Rhizophagus clarus + Gigaspora margarita and control (without AMF, four P doses: 0, 60, 120 and 180 mg dm -3 soil, with four replications. The variables height, dry matter area, root dry matter, leaf area, stem diameter and the contents of N, P, K, Ca and Mg in shoots, were evaluated. Paricá seedlings showed higher colonization percentage for Rhizophagus clarus and mixed inoculum (80 and 90%, respectively, different from that observed for the species Gigaspora margarita , with a lower percentage (20%. The Rhizophagus clarus and mixed inoculum, in the absence of P, increased the growth variables relative to the control plants. The contents of N, P, Ca and Mg were influenced by the AMF and by the doses of P.

  9. Produção de pós-larvas de Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae), sob condições controladas de laboratório

    OpenAIRE

    Barreto, Aline Do Vale; Soares, Cileide Maria Acioli

    1982-01-01

    Studies on production of post-larvae of the prawn Macrobrachium amazonicum under controlled laboratory conditions were developed at the Departamento de Oceanografia da Universidade Federal de Pernambuco, from September 1980 to February 1982. Experiments were undertaken in aquaria and tanks where the salinity and density of the populations had been changed. The best production was obtained with salinity 14/00 with a density of 38 larvae per litre. The food provided for larvae was crushed fish ...

  10. On a comparison of Huber-Mises-Hencky with Burzynski-Pecherski equivalent stresses for glass body during nonstationary thermal load

    Science.gov (United States)

    Badur, Janusz; Bryk, Mateusz; Ziolkowski, Pawel; Slawinski, Daniel; Ziolkowski, Piotr; Kornet, Sebastian; Stajnke, Michal

    2017-03-01

    Glass materials are constantly the base of life the majority of society. A lot of us, every morning brew a cup of tea or coffee in his favourite cup or look out glass pane in order to define the weather outside. Examples can be multiplied and multiplied. On account the role of glass materials, in most people life, has been decided to choice a glass material as a base to perform thermal FSI analysis. However the analysis would be nothing without calculative model. It is well known that there are various strength hypothesis, which treat of material strength dependency on reduced tension. In most cases, to the issue which is related to reduced tensions appointment which appear in analysed material, the Huber-Mises-Hencky hypothesis is used, but it is difficult to model glass material by this hypothesis. It happens because of specific properties of glass, which is amorphous body. And here, with help occurs the W.Burzynski, Huber's student. Burzynski proposed the following reduced tension definition: Φf+η (p )ṡΦv=K , from which the Burzynski material effort is calculated:σB=1/2 k ṡ[ -(k -1 )ṡσm+√{(k-1 ) 2ṡσm2+4 ṡk ṡσHM H 2 } ] . We reached to the idea, which is the introduction of material properties coefficient k. This parameter describes the relation of compressing strength to the tensile strength. Furthermore, R. Pecherski proposed the Burzynski hypothesis enlargement by Lode's angle influence, which controls the participation of the energy density of distortion. Finally the Burzynski-Pecherski hypothesis is: η˜f(θ )ϕf+η˜v(p )ϕv=K . Where θ describes Lode's angle. In this work is presented the comparison of aforementioned hypothesis and delimitation the differences in received results stresses values by each one of hypothesis. As example of analysed problem the cold glass cup under nonstationary thermal load (which is simulated by boiled water) is taken under consideration. The analysis consist of flow calculations, bounded with filling

  11. Estudo Fitoqu?mico de Brosimum potabile Ducke e Brosimum acutifolium Huber, visando investigar por m?todos te?ricos, o mecanismo de biotransforma??o de ?-sitosterol em Estigmaterol

    OpenAIRE

    Souza, Marin?s Rodrigues de

    2000-01-01

    O estudo fitoqu?mico de Bosimum acutifolium, Huber e Brosimum potabile, Ducke est? sendo relatado im este trabalho. Os compostos ?-sitosterol e estigmasterol foram identificados isolados de misturas que contenham eles tanto nos dois esp?cies estudadas e, adicionalmente, a partir de B. potabile isolou-se o (-) - como centrolobin bem. A posterior ? um phytoconstituent do diaril-heptanoids classe qu?mica que foi caracterizado por os dados espectrosc?picos. A import?ncia dos resultados thse ? ...

  12. Relação energia: proteína dietária para pós-larvas de Macrobrachium amazonicum (Crustacea, Decapoda - DOI: 10.4025/actascianimsci.v25i2.1979 Dietary energy: protein ratio for Macrobrachium amazonicum (Crustacea, Decapoda- DOI: 10.4025/actascianimsci.v25i2.1979

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    Dario Rocha Falcon

    2003-04-01

    Full Text Available Esta pesquisa foi realizada no Laboratório de Nutrição de Organismos Aquáticos (AquaNutri da FMVZ - Unesp - Campus de Botucatu, unidade integrada ao CaUnesp. Teve por objetivo avaliar o desempenho de pós-larvas de Macrobrachium amazonicum (Crustacea, Decapoda, submetidas a dietas purificadas, contendo 3 níveis de proteína bruta (30%; 35% e 40% e 2 níveis de energia bruta (3200 e 3600kcal/kg de ração, em um delineamento inteiramente casualizado, sistema fatorial 3x2, com 5 repetições. Pós-larvas com peso médio inicial de 280±12mg, provenientes do Setor de Carcinicultura do CaUnesp, foram mantidas em 30 aquários de 80 litros, em um sistema de recirculação de água (1,0L/min com temperatura controlada. Os resultados demonstraram, após 60 dias, a importância do balanço e a interação da energia e da proteína para as pós-larvas. Pode-se concluir que as rações com 35,0% de proteína bruta e 3600kcal de EB/kg proporcionam melhores respostas de ganho de peso e conversão alimentar para o M. amazonicum; que rações com 30,0% de proteína bruta e 3600kcal de EB/kg proporcionam melhores taxas de sobrevivência; e que as melhores respostas de crescimento são obtidas quando as rações apresentam a relação energia:proteína de 10,28:1,0.This experiment was conducted at the Aquatic Nutrition Organisms Laboratory (AquaNutri, integrated unit to CaUnesp. The aim of this study was to evaluate the growth performance of Macrobrachium amazonicum (Crustacea, Decapoda, post larvae. Post larvae were fed diet containing different levels of protein and energy. A factorial experiment with three levels of protein (30.0; 35.0 and 40.0 crude protein and two levels of energy (3200 and 3600 gross energy kcal/kg was carried out on a completely randomly design, with five replicates. 360 post larvae were randomly stocked, average weight of 280±12mg, into 30 aquaria, 80L each aquarium. Albumin-gelatin diet was used. Weight gain, feed conversion and

  13. Occurrence of Macrobrachium amazonicum (Heller (Decapoda, Palaemonidae in Leopoldo's inlet (Ressaco do Leopoldo, upper Paraná River, Porto Rico, Paraná, Brazil

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    Andréa Bialetzki

    1997-01-01

    Full Text Available Studies on the occurrence, temporal distribution and nychthemeral variation of Macrobrachium amazonicum (Heller, 1862 were undertaken in Leopoldo's Inlet, upper Paraná River, Porto Rico, Paraná, Brazil. Seventeen thousand and sixty specimens (11,786 larvae and 5,274 juveniles were captured with a conicalcylindrical plankton net of mesh 0.5mm in monthly samples between February 1991 and February 1992. Results show that the greatest densities of larvae (301.83 larvae/10m³ and juveniles (168.8/10m³ of this species were caught in December 1991. Largest captures were made during the night. With regard to abiotic factors water temperature ranged from 20º to 30ºC, pH ranged from 5.66 to 7.37 and electric conductivity ranged from 51.83 to 65.33µS/cm. Relationship between the density of larvae and juveniles and abiotic factors was calculated by the Principal Components Analysis (PCA which revealed the influence of some limnological variables especially on the distribution of larvae.

  14. Temporal variation in the water quality of ponds and effluent of grow-out ponds of Amazon River prawn Macrobrachium amazonicum

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    Erlei Cassiano Keppeler

    2013-06-01

    Full Text Available This study was conducted in the Crustacean Sector of the Aquaculture Center (CAUNESP at the São Paulo State University, Jaboticabal (21 ° 15’22”S and 48 ° 18’48”W São Paulo, Brazil, from December 2003 to May 2004. The aim was to examine the water quality parameters of importance to freshwater prawn culture, operated in a semi-intensive system in Amazon River. Nine 0.01-ha earthen ponds were stocked with 20 juveniles.m -2 . Prawns were fed commercial diet at a rate of 7 to 9% of biomass until the 14th week. After 145 days of stocking, all ponds were drained and harvested. The following water parameters were determined weekly: dissolved oxygen, oxygen biochemical demand, pH, total alkalinity, electrical conductivity, suspended total solids and turbidity, N-nitrate, N-nitrite, N-nitrogen ammonia, N- total, soluble ortophosphate, total phosphorus, chlorophyll and pheophytin. In the semi-intensive culture system of M. amazonicum, there was no clear pattern of temporal variation in the limnological variables studied. Dissolved oxygen, pH, BOD, ammonia nitrogen and nitrate increased in the afternoon period while, the other variables did not change. In general, water quality is more dependent on the biological processes that occur in the pond than on the characteristics of the renewal water for some variable.

  15. Modulation By K+ Plus NH4+ of Microsomal (Na+, K+)-ATPase Activity in Selected Ontogenetic Stages of the Diadromous River Shrimp Macrobrachium amazonicum (Decapoda, Palaemonidae)

    Science.gov (United States)

    Leone, Francisco A.; Bezerra, Thais M. S.; Garçon, Daniela P.; Lucena, Malson N.; Pinto, Marcelo R.; Fontes, Carlos F. L.; McNamara, John C.

    2014-01-01

    We investigate the synergistic stimulation by K+ plus NH4+ of (Na+, K+)-ATPase activity in microsomal preparations of whole zoea I and decapodid III, and in juvenile and adult river shrimp gills. Modulation of (Na+, K+)-ATPase activity is ontogenetic stage-specific, and particularly distinct between juveniles and adults. Although both gill enzymes exhibit two different sites for K+ and NH4+ binding, in the juvenile enzyme, these two sites are equivalent: binding by both ions results in slightly stimulated activity compared to that of a single ionic species. In the adult enzyme, the sites are not equivalent: when one ion occupies its specific binding site, (Na+, K+)-ATPase activity is stimulated synergistically by ≈50% on binding of the complementary ion. Immunolocalization reveals the enzyme to be distributed predominantly throughout the intralamellar septum in the gill lamellae of juveniles and adults. Western blot analyses demonstrate a single immunoreactive band, suggesting a single (Na+, K+)-ATPase α-subunit isoform that is distributed into different density membrane fractions, independently of ontogenetic stage. We propose a model for the modulation by K+ and NH4+ of gill (Na+, K+)-ATPase activity. These findings suggest that the gill enzyme may be regulated by NH4+ during ontogenetic development in M. amazonicum. PMID:24586919

  16. Modulation by K+ Plus NH4+ of microsomal (Na+, K+-ATPase activity in selected ontogenetic stages of the diadromous river shrimp Macrobrachium amazonicum (Decapoda, Palaemonidae.

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    Francisco A Leone

    Full Text Available We investigate the synergistic stimulation by K(+ plus NH4 (+ of (Na(+, K(+-ATPase activity in microsomal preparations of whole zoea I and decapodid III, and in juvenile and adult river shrimp gills. Modulation of (Na(+, K(+-ATPase activity is ontogenetic stage-specific, and particularly distinct between juveniles and adults. Although both gill enzymes exhibit two different sites for K(+ and NH4 (+ binding, in the juvenile enzyme, these two sites are equivalent: binding by both ions results in slightly stimulated activity compared to that of a single ionic species. In the adult enzyme, the sites are not equivalent: when one ion occupies its specific binding site, (Na(+, K(+-ATPase activity is stimulated synergistically by ≈ 50% on binding of the complementary ion. Immunolocalization reveals the enzyme to be distributed predominantly throughout the intralamellar septum in the gill lamellae of juveniles and adults. Western blot analyses demonstrate a single immunoreactive band, suggesting a single (Na(+, K(+-ATPase α-subunit isoform that is distributed into different density membrane fractions, independently of ontogenetic stage. We propose a model for the modulation by K(+ and NH4 (+ of gill (Na(+, K(+-ATPase activity. These findings suggest that the gill enzyme may be regulated by NH4 (+ during ontogenetic development in M. amazonicum.

  17. Modulation by K+ Plus NH4+ of microsomal (Na+, K+)-ATPase activity in selected ontogenetic stages of the diadromous river shrimp Macrobrachium amazonicum (Decapoda, Palaemonidae).

    Science.gov (United States)

    Leone, Francisco A; Bezerra, Thais M S; Garçon, Daniela P; Lucena, Malson N; Pinto, Marcelo R; Fontes, Carlos F L; McNamara, John C

    2014-01-01

    We investigate the synergistic stimulation by K(+) plus NH4 (+) of (Na(+), K(+))-ATPase activity in microsomal preparations of whole zoea I and decapodid III, and in juvenile and adult river shrimp gills. Modulation of (Na(+), K(+))-ATPase activity is ontogenetic stage-specific, and particularly distinct between juveniles and adults. Although both gill enzymes exhibit two different sites for K(+) and NH4 (+) binding, in the juvenile enzyme, these two sites are equivalent: binding by both ions results in slightly stimulated activity compared to that of a single ionic species. In the adult enzyme, the sites are not equivalent: when one ion occupies its specific binding site, (Na(+), K(+))-ATPase activity is stimulated synergistically by ≈ 50% on binding of the complementary ion. Immunolocalization reveals the enzyme to be distributed predominantly throughout the intralamellar septum in the gill lamellae of juveniles and adults. Western blot analyses demonstrate a single immunoreactive band, suggesting a single (Na(+), K(+))-ATPase α-subunit isoform that is distributed into different density membrane fractions, independently of ontogenetic stage. We propose a model for the modulation by K(+) and NH4 (+) of gill (Na(+), K(+))-ATPase activity. These findings suggest that the gill enzyme may be regulated by NH4 (+) during ontogenetic development in M. amazonicum.

  18. Levy diffusion in a force field, huber relaxation kinetics, and nonequilibrium thermodynamics: H theorem for enhanced diffusion with Levy white noise

    Science.gov (United States)

    Vlad; Ross; Schneider

    2000-08-01

    A characteristic functional approach is suggested for Levy diffusion in disordered systems with external force fields. We study the overdamped motion of an ensemble of independent particles and assume that the force acting upon one particle is made up of two additive components: a linear term generated by a harmonic potential and a second term generated by the interaction with the disordered system. The stochastic properties of the second term are evaluated by using Huber's approach to complex relaxation [Phys. Rev. B 31, 6070 (1985)]. We assume that the interaction between a moving particle and the environment can be expressed by the contribution of a large number of relaxation channels, each channel having a very small probability of being open and obeying Poisson statistics. Two types of processes are investigated: (a) Levy diffusion with static disorder for which the fluctuations of the random force are frozen and last forever and (b) diffusion with strong dynamic disorder and independent Levy fluctuations (Levy white noise). In both cases we show that the probability distribution of the position of a diffusing particle tends towards a stationary nonequilibrium form. The characteristic functional of concentration fluctuations is evaluated in both cases by using the theory of random point processes. For large times the fluctuations of the concentration field are stationary and the corresponding probability density functional can be evaluated analytically. In this limit the fluctuations depend on the distribution of the total number of particles but are independent of the initial positions of the particles. We show that the logarithm of the stationary probability functional plays the role of a nonequilibrium thermodynamic potential, which has a structure similar to the Helmholtz free energy in equilibrium thermodynamics: it is made up of the sum of an energetic component, depending on the external mechanical potential, and of an entropic component, depending on

  19. Differential distribution of V-type H(+)-ATPase and Na (+)/K (+)-ATPase in the branchial chamber of the palaemonid shrimp Macrobrachium amazonicum.

    Science.gov (United States)

    Boudour-Boucheker, Nesrine; Boulo, Viviane; Charmantier-Daures, Mireille; Grousset, Evelyse; Anger, Klaus; Charmantier, Guy; Lorin-Nebel, Catherine

    2014-07-01

    V-H(+)-ATPase and Na(+)/K(+)-ATPase were localized in the gills and branchiostegites of M. amazonicum and the effects of salinity on the branchial chamber ultrastructure and on the localization of transporters were investigated. Gills present septal and pillar cells. In freshwater (FW), the apical surface of pillar cells is amplified by extensive evaginations associated with mitochondria. V-H(+)-ATPase immunofluorescence was localized in the membranes of the apical evaginations and in clustered subapical areas of pillar cells, suggesting labeling of intracellular vesicle membranes. Na(+)/K(+)-ATPase labeling was restricted to the septal cells. No difference in immunostaining was recorded for both proteins according to salinity (FW vs. 25 PSU). In the branchiostegite, both V-H(+)-ATPase and Na(+)/K(+)-ATPase immunofluorescence were localized in the same cells of the internal epithelium. Immunogold revealed that V-H(+)-ATPase was localized in apical evaginations and in electron-dense areas throughout the inner epithelium, while Na(+)/K(+)-ATPase occurred densely along the basal infoldings of the cytoplasmic membrane. Our results suggest that morphologically different cell types within the gill lamellae may also be functionally specialized. We propose that, in FW, pillar cells expressing V-H(+)-ATPase absorb ions (Cl(-), Na(+)) that are transported either directly to the hemolymph space or through a junctional complex to the septal cells, which may be responsible for active Na(+) delivery to the hemolymph through Na(+)/K(+)-ATPase. This suggests a functional link between septal and pillar cells in osmoregulation. When shrimps are transferred to FW, gill and branchiostegite epithelia undergo ultrastructural changes, most probably resulting from their involvement in osmoregulatory processes.

  20. Avaliação preliminar do potencial estrogênico de Apuleia leiocarpa (Vogel) J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae, and Brosimum guianense (Aubl.) Huber, Moraceae, no sistema reprodutor de ratos Wistar

    OpenAIRE

    Sá,Rita de Cássia da Silveira e; Peters,Vera Maria; Guerra,Martha de Oliveira

    2010-01-01

    Um grupo de primatas da espécie Alouatta guariba foi estudado em seu habitat natural na Mata Atlântica, onde foi observada uma drástica redução populacional dessa espécie. Suspeita-se que essa redução se deve à inibição da fertilidade das fêmeas devido ao consumo de Apuleia leiocarpa (Vogel) J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae e Brosimum guianense (Aubl.) Huber, Moraceae. Estudos fitoquímicos indicaram a presença de cumarinas, especialmente em B. guianense e P. elegans,...

  1. Preliminary assessement of the estrogenic potential of Apuleia leiocarpa (Vogel) J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae, and Brosimum guianense (Aubl.) Huber, Moraceae, on the wistar rat reproductive system

    OpenAIRE

    Sá, Rita de Cássia da Silveira e; Peters, Vera Maria; Guerra, Martha de Oliveira

    2010-01-01

    Um grupo de primatas da espécie Alouatta guariba foi estudado em seu habitat natural na Mata Atlântica, onde foi observada uma drástica redução populacional dessa espécie. Suspeita-se que essa redução se deve à inibição da fertilidade das fêmeas devido ao consumo de Apuleia leiocarpa (Vogel) J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae e Brosimum guianense (Aubl.) Huber, Moraceae. Estudos fitoquímicos indicaram a presença de cumarinas, especialmente em B. guianense e P. elegans,...

  2. Manejo alimentar de pós-larvas do camarão-da-amazônia, Macrobrachium amazonicum, em berçário I - DOI: 10.4025/actascianimsci.v27i1.1242 Post-larvae feeding strategies of Amazonia prawns (Macrobrachium amazonicum - DOI: 10.4025/actascianimsci.v27i1.1243

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    Wagner Cotroni Valenti

    2005-03-01

    Full Text Available Avaliou-se efeitos de quantidades e freqüências diárias de alimentação na sobrevivência, crescimento e conversão alimentar de pós-larvas de Macrobrachium amazonicum. A ração foi oferecida 1, 2, 4 e 8x/dia. As proporções alimentares foram: 10, 20, 40, 80, 160 e 320% da biomassa, proporcionadas pelas quantidades de 10, 20 e 40% nas freqüências diárias. As pós-larvas foram mantidas em tanques-rede e o peso avaliado por 20 dias. A sobrevivência sempre foi acima de 90%. Apenas a freqüência diária de alimentação afetou o crescimento. O oferecimento de alimento 4x/dia aumentou o ganho de peso (apenas na proporção de 40% da biomassa. A conversão alimentar foi afetada apenas pela freqüência diária de alimentação, sendo maior nas maiores quantidades de alimento. Esses efeitos parecem decorrer da competição alimentar e da estabilidade do alimento na água. Conclui-se que a melhor oferta de alimento seja a proporção de 40% da biomassa, dividida em 4x/diaThis study investigated practical feeding strategies for survival, growth and food conversion rate in Macrobrachium amazonicum post-larvae. The prawns were provided with food 1, 2, 4 and 8 times a day. The food amounts were 10, 20, 40, 80, 160 and 320% of the prawns´ total weight, resulted from the amounts of 10, 20 and 40% in daily frequency. The weight gain was evaluated during the 20 days while the post-larvae were kept in net cages. Survival was always over 90%. Growth was affected only by the daily frequencies of feeding. Food offered 4 times a day increased body weight (only at the rate 40% food amount. Food conversion was affected by daily frequency of feeding and it was higher when the largest amount of food was offered. Feed competition and food stability in the water may be the reason for it. Thus, the best feeding regime should be 40% of biomass, 4 times a day

  3. Crescimento e absorção de nutrientes por mudas de freijó (Cordia goeldiana huber em função de doses de fósforo e de zinco Growth and nutrient absorption in brazilian walnut (Cordia goeldiana huber seedlings as a function of phosphorus and zinc levels

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    Antonio Rodrigues Fernandes

    2007-08-01

    Full Text Available O objetivo do trabalho foi estudar a influência da relação do fósforo com o zinco sobre o crescimento, teor e conteúdo de nutrientes em plantas de freijó (Cordia goeldiana Huber. Utilizaram-se amostras de um Latossolo Vermelho-Escuro, da camada de 0 - 20 cm de profundidade do campus da Universidade Federal de Lavras, que apresentava 1 mg de P (Mehlich 1 e 0,9 mg de Zn por dm³ de solo. O delineamento experimental foi o inteiramente casualizado em esquema fatorial 4 x 3, sendo quatro doses de P (0, 150, 300 e 450 mg dm-3 e 3 de Zn (0, 5 e 10 mg dm-3, com quatro repetições. Aos 12 meses após o plantio, foram colhidas as plantas e a matéria seca das folhas, caules e raízes, moídas separadamente, para as determinações químicas. A aplicação do fósforo promoveu aumento no crescimento das mudas e nos teores e conteúdos de P nas diferentes partes da planta de freijó e provocou redução nos teores de zinco nas folhas. Nas raízes, na presença de doses de zinco a interação do fósforo com o zinco reduziu o teor de zinco. As doses de zinco proporcionaram aumentos tanto no teor quanto no conteúdo deste nas folhas e raízes diminuíram os conteúdos de P nas folhas e caules das plantas. O efeito sobre os demais macronutrientes foi variado em função da parte da planta analisada.The objective of this work was to study the influence of the zinc-phosphorus relationship on the growth, content and accumulation of nutrients in Brazilian walnut (Cordia goeldiana Huber. Samples of Dark-Red Latosol, 0 - 20 cm depth, from the campus of the Federal University of Lavras, with 1 mg P (Mehlich 1 and 0.9 mg Zn per dm³ soil. The experiment was arranged in a complete randomized factorial design 4 x 3, with 4 P doses (0; 150; 300 and 450 mg dm-3 and 3 Zn doses (0; 5 and 10 mg dm-3, with 4 repetitions. At 12 months after planting, plants were harvested, and dry matter of shoots, roots and leaves were ground separately for chemical analysis

  4. Radial wood Allocation in Schizolobium Parahyba

    Science.gov (United States)

    G. Bruce Williamson; Michael C. Wiemann; James P. Geaghan

    2012-01-01

    The diversity of tropical trees has captivated botanists for centuries. Woods of difterent species, not only differ in appearance, but also in functional traits-density, porosity and strength-characteristics that relate to various plant functions such as support and conduction. The specific gravity (SG) of wood is a species' trait that integrates mechanical...

  5. Diferenciação morfotípica de machos do camarão de água doce Macrobrachium amazonicum a partir da análise do hepatopâncreas e do sistema reprodutor - DOI: 10.4025/actascianimsci.v26i4.1720 Morphotypic differentiation of males of freshwater prawn Macrobrachium amazonicum: Changes in the hepatopancreas and the reproductive system - DOI: 10.4025/actascianimsci.v26i4.1720

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    Carlos Alberto Vicentini

    2004-04-01

    Full Text Available Machos adultos do Macrobrachium amazonicum de uma população com a mesma idade podem ser categorizados em quatro morfotipos, de acordo com as características morfológicas externas. Cada morfotipo representa um estágio diferente de crescimento e varia de acordo com a cor e o comprimento do quelípodo. São encontrados machos com quela translúcida (QT, quela canela (QC, quela esverdeada (QE e, finalmente, machos com quela verde intenso (QVI. No entanto, a morfologia interna dos testículos categoriza os machos adultos dessa espécie em três morfotipos. Na tentativa de esclarecer essas observações, 40 machos de mesma idade foram selecionados de uma população, mantida no Setor de Carcinicultura do Caunesp. O sistema reprodutor e o hepatopâncreas de cada animal de cada morfotipo foram pesados e comparados. Utilizou-se o crescimento do sistema reprodutor como indicador da atividade sexual. Da mesma forma, o crescimento do hepatopâncreas foi relacionado ao crescimento somático. No presente trabalho, o crescimento do hepatopâncreas foi maior (pM. amazonicum apresenta três morfotipos distintos: QT, QC e QVI.Adult males of the freshwater prawn Macrobrachium amazonicum from a same-age population can be categorized in four morphotypes, according to external morphologic characteristics. Each morphotype represents a different stage in the growth of adult males, starting with translucent claw (TC, followed by cinnamon claw (CC, then green claw 1 (GC1 and, finally, green claw2 (GC2. However, they can be categorized three morphotypes, according to testis internal morphology. To clarify in part these observations, 40 male prawns were selected from a single-age population bred at the Aquaculture Center of Unesp. The reproductive system and the hepatopancreas of each animal, from all morphotypes, were measured and compared. The reproductive system growth was a sexual activity indicator. Also, hepatopancreas growth was found to be related to somatic

  6. Macrofauna edáfica asociada con sistemas agroforestales en la Amazonía Colombiana

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    Juan Carlos Suárez Salazar

    2015-07-01

    Full Text Available La densidad, riqueza y diversidad de la macrofauna edáfica son afectadas, entre otros factores, por la configuración de los agroecosistemas y la estacionalidad de la precipitación. Con el fin de evaluar estos efectos en mayo y noviembre de 2011, correspondientes a épocas de máxima y mínima precipitación, respectivamente, se realizaron estudios sobre la composición de la macrofauna edáfica asociada con los arreglos agroforestales ubicados en el Centro de Investigaciones Macagual Cesar Augusto Estrada González, Amazonia, Caquetá, Colombia. El experimento se dispuso en un diseño completo al azar bifactorial con cuatro tratamientos (arreglos agroforestales: AB = abarco - Cariniana pyriformis Miers; CH = caucho Hevea brasiliensis (Willd. ex A. Juss. Müll. Arg. ; CP = caucho-parica Schizolobium amazonicum Huber; UV = uvito Genipa Americana L. y dos épocas (máxima y mínima precipitación, y cuatro repeticiones en parcelas divididas. Para explorar las relaciones entre los órdenes de macrofauna, se realizó un análisis de componentes principales y se evalúo el efecto de los arreglos agroforestales con una prueba de Monte Carlo. Los resultados mostraron que la densidad de la macrofauna fue mayor en el periodo de máxima precipitación (1129 individuos en comparación con el de mínima (598 individuos. Los arreglos agroforestales influyen sobre la presencia o ausencia de algunos grupos taxonómicos (P < 0.05 como Homoptera (Insecta y Raphidioptera (Insecta; además los UV y AB pueden favorecer a la macrofauna del estrés por sequía

  7. Níveis de vitamina E e de selênio para pós-larvas de Macrobrachium amazonicum - DOI: 10.4025/actascianimsci.v26i1.1965 Dietary level of vitamin E and selenium on diets for post larvae of Macrobrachium amazonicum - DOI: 10.4025/actascianimsci.v26i1.1965

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    Alexandra da Silva Pereira

    2004-04-01

    Full Text Available Esta pesquisa teve por objetivo determinar os melhores níveis dietários de vitamina E e de selênio para pós-larvas do camarão amazônico, Macrobrachium amazonicum (Crustacea. Nesse sentido, pós-larvas com peso médio de 280mg e comprimento médio de 20,60mm foram mantidas em 28 aquários de 12L dotados de sistema de recirculação de água e de controle automático de temperatura, submetidas à esquema fatorial 3x2, em um delineamento inteiramente casualizado, com 1 tratamento adicional, totalizando 4 repetições por tratamento. As pós-larvas foram alimentadas com rações purificadas à base de albumina e de gelatina, contendo 3 níveis de vitamina E (100mg/kg, 200mg/kg e 400,00mg/kg, 2 níveis de selênio (0,50mg/kg e 1mg/kg e 1 tratamento adicional (sem suplementação de selênio e de vitamina E. Após 30 dias, avaliou-se o ganho de peso, a conversão alimentar aparente, a taxa de sobrevivência e a concentração de selênio no filé. Observou-se que: 200mg de vitamina E/kg e 0,50mg de selênio/kg proporcionam melhores respostas de ganho de peso e de conversão alimentar aparente; 100mg de vitamina E/kg e 0,50mg de selênio/kg proporcionam melhor taxa de sobrevivência e, 200mg de vitamina E/kg e 1mg de selênio/kg proporcionam maior concentração de selênio no filé. Com base nesses resultados, recomenda-se 200mg de vitamina E/kg e 0,50mg de selênio/kg de ração, na alimentação de pós-larvas de camarão amazônico, de modo a proporcionar melhores resultados quanto ao desempenho produtivo.The objective of this study was to determine the best dietary level of vitamin E and selenium on diets for Amazon prawn, Macrobrachium amazonicum (Crustacea. Thus, post-larvae of 280mg average weight and 20.60mm average length were kept in 28 aquaria (12.00L supplied with water. They were maintained in automatic control of temperature, in a completely randomized factorial experiment 3x2 design, plus an additional treatment, with four

  8. Polyculture of fresh water shrimp Macrobrachium amazonicum (Heller, 1862 wifh Nile tilapia (Oreochromis niloticus feeding with ration pelleted and mashed / Policultivo do camarão de água doce Macrobrachium amazonicum (Heller, 1862 com a Tilápia do Nilo (Oreochromis niloticus alimentadas com rações peletizada e farelada

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    Leandro Bohnenberger

    2009-07-01

    Full Text Available The objective of this work was to evaluate the influence of fresh water shrimp Macrobrachium amazonicum (Heller, 1862 in performance of Nile tilapia (Oreochromis niloticus cultivated in polyculture system and feeding with ration pelleted and mashed. The work was realized in Centro de Pesquisa em Aqüicultura Ambiental-CPAA/IAP – Toledo/PR during 37 days. Were utilized like experimental unit 16 ponds excavated, covered with concrete but with bottom of soil with dimension the 4 x 3 m and useful volume the 3,5 m3. Were utilized 30 tilapias e 150 shrimps for experimental unit distributed at an entirely randomized design with 4 treatments and 4 replications, where TF: tilapia feeding with ration mashed; TCF: tilapia and shrimp feeding with ration mashed; TP: tilapia feeding with ration pelleted; TCP: tilapia and shrimp feeding with ration pelleted. The density used were the 2,6 fishes/m2 with medium initial weight the 5,58 ± 0,10 g and initial length the 5,56 cm, and the density of shrimp was the 13 shrimps/m2 with initial length the 1,04 cm. The temperature was gauged daily, while the variables dissolved oxygen, pH and electrical conductivity, weekly. The quantity of ration supplied was the 10% of total biomass of fishes, with feed frequency the 4 times a day, being corrected weekly in function of the biometry. During the experimental period the medium values of temperature, dissolved oxygen, pH and electrical conductivity of the ponds water were 23,42 ± 0,83ºC, 5,32 ± 0,52 mg/L, 7,02 ± 0,39, e 100,96 ± 1,81 µS/ cm respectively. Won´t registering any influence of shrimp during the cultivation and the ration pelleted provide the better conversion alimentary and performance of tilapias.O objetivo deste trabalho foi avaliar a influência do camarão de água doce Macrobrachium amazonicum (Heller, 1862 no desempenho da Tilápia do Nilo (Oreochromis niloticus cultivada no sistema de policultivo e alimentada com rações peletizadas e fareladas

  9. Differential adjustment in gill Na+/K+- and V-ATPase activities and transporter mRNA expression during osmoregulatory acclimation in the cinnamon shrimp Macrobrachium amazonicum (Decapoda, Palaemonidae).

    Science.gov (United States)

    Faleiros, Rogério Oliveira; Goldman, Maria Helena S; Furriel, Rosa P M; McNamara, John Campbell

    2010-11-15

    We evaluate osmotic and chloride (Cl(-)) regulatory capability in the diadromous shrimp Macrobrachium amazonicum, and the accompanying alterations in hemolymph osmolality and [Cl(-)], gill Na(+)/K(+)-ATPase activity, and expression of gill Na(+)/K(+)-ATPase α-subunit and V-ATPase B subunit mRNA during salinity (S) acclimation. We also characterize V-ATPase kinetics and the organization of transport-related membrane systems in the gill epithelium. Macrobrachium amazonicum strongly hyper-regulates hemolymph osmolality and [Cl(-)] in freshwater and in salinities up to 25‰ S. During a 10-day acclimation period to 25‰ S, hemolymph became isosmotic and hypo-chloremic after 5 days, [Cl(-)] alone remaining hyporegulated thereafter. Gill Na(+)/K(+)-ATPase α-subunit mRNA expression increased 6.5 times initial values after 1 h, then decreased to 3 to 4 times initial values by 24 h and to 1.5 times initial values after 10 days at 25‰ S. This increased expression was accompanied by a sharp decrease at 5 h then recovery of initial Na(+)/K(+)-ATPase activity within 24 h, declining again after 5 days, which suggests transient Cl(-) secretion. V-ATPase B-subunit mRNA expression increased 1.5-fold within 1 h, then reduced sharply to 0.3 times initial values by 5 h, and remained unchanged for the remainder of the 10-day period. V-ATPase activity dropped sharply and was negligible after a 10-day acclimation period to 21‰ S, revealing a marked downregulation of ion uptake mechanisms. The gill epithelium consists of thick, apical pillar cell flanges, the perikarya of which are coupled to an intralamellar septum. These two cell types respectively exhibit extensive apical evaginations and deep membrane invaginations, both of which are associated with numerous mitochondria, characterizing an ion transporting epithelium. These changes in Na(+)/K(+)- and V-ATPase activities and in mRNA expression during salinity acclimation appear to underpin ion uptake and Cl(-) secretion by the

  10. Kinetic analysis of gill (Na⁺,K⁺)-ATPase activity in selected ontogenetic stages of the Amazon River shrimp, Macrobrachium amazonicum (Decapoda, Palaemonidae): interactions at ATP- and cation-binding sites.

    Science.gov (United States)

    Leone, Francisco Assis; Masui, Douglas Chodi; de Souza Bezerra, Thais Milena; Garçon, Daniela Pereira; Valenti, Wagner Cotroni; Augusto, Alessandra Silva; McNamara, John Campbell

    2012-04-01

    We investigated modulation by ATP, Mg²⁺, Na⁺, K⁺ and NH₄⁺ and inhibition by ouabain of (Na⁺,K⁺)-ATPase activity in microsomal homogenates of whole zoeae I and decapodid III (formerly zoea IX) and whole-body and gill homogenates of juvenile and adult Amazon River shrimps, Macrobrachium amazonicum. (Na⁺,K⁺)-ATPase-specific activity was increased twofold in decapodid III compared to zoea I, juveniles and adults, suggesting an important role in this ontogenetic stage. The apparent affinity for ATP (K(M) = 0.09 ± 0.01 mmol L⁻¹) of the decapodid III (Na⁺,K⁺)-ATPase, about twofold greater than the other stages, further highlights this relevance. Modulation of (Na⁺,K⁺-ATPase activity by K⁺ also revealed a threefold greater affinity for K⁺ (K₀.₅ = 0.91 ± 0.04 mmol L⁻¹) in decapodid III than in other stages; NH₄⁺ had no modulatory effect. The affinity for Na⁺ (K₀.₅ = 13.2 ± 0.6 mmol L⁻¹) of zoea I (Na⁺,K⁺)-ATPase was fourfold less than other stages. Modulation by Na⁺, Mg²⁺ and NH₄⁺ obeyed cooperative kinetics, while K⁺ modulation exhibited Michaelis-Menten behavior. Rates of maximal Mg²⁺ stimulation of ouabain-insensitive ATPase activity differed in each ontogenetic stage, suggesting that Mg²⁺-stimulated ATPases other than (Na⁺,K⁺)-ATPase are present. Ouabain inhibition suggests that, among the various ATPase activities present in the different stages, Na⁺-ATPase may be involved in the ontogeny of osmoregulation in larval M. amazonicum. The NH₄⁺-stimulated, ouabain-insensitive ATPase activity seen in zoea I and decapodid III may reflect a stage-specific means of ammonia excretion since functional gills are absent in the early larval stages.

  11. INOVAÇÃO DE ARTEFATOS E CARACTERIZAÇÃO DA PESCA DO CAMARÃO Macrobrachium amazonicum (HELLER, 1862 NA COMUNIDADE SÃO SEBASTIÃO DA BRASÍLIA - PARINTINS/AM

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    Raniere Garcez Costa Sousa

    2014-10-01

    Full Text Available Na Amazônia muitas comunidades ribeirinhas atuam na pesca do camarão de água doce para complementar a renda familiar. Com o objetivo de entender esse tipo de pescaria no município de Parintins (Amazonas, foram realizadas visitas aos setores da pesca do camarão Macrobrachium amazonicum no período de julho a outubro de 2011. A área do estudo localiza-se aos arredores da comunidade São Sebastião da Brasília, que atua principalmente na captura dessa espécie de camarão. Ainda, informações sobre os tipos de embarcações e apetrechos utilizados nessa atividade foram coletados. Os dados mostraram que 100% dessas embarcações são canoas construídas de madeira, movidas a remo ou a motor, localmente conhecidas como "rabeta". O apetrecho utilizado na captura do camarão é a “camaroeira”, ferramenta inovadora desenvolvida pelos próprios comunitários. Os pescadores utilizam peixes cozidos para atraírem os camarões às armadilhas. A produção média das pescarias é de 20 litros/camarão por pescador ao dia. Na época de safra, toda produção é comercializada pelas mulheres pescadoras, no mercado central em Parintins. O lucro da pescaria gera em média RS 1.500,00/mês para cada pescador. Esta atividade tem aumentado a renda e melhorado a qualidade de vida dos comunitários na comunidade Brasília. Por outro lado, tem despertado também o interesse de pescadores de outras regiões, que anseiam atuar na pesca do camarão em Parintins. Palavras-chave: Camaroeira, Comunidade Brasília, Macrobrachium amazonicum, Pesca artesanal do camarão. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v4n3p83-87

  12. Avaliação preliminar do potencial estrogênico de Apuleia leiocarpa (Vogel J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae, and Brosimum guianense (Aubl. Huber, Moraceae, no sistema reprodutor de ratos Wistar Preliminary assessement of the estrogenic potential of Apuleia leiocarpa (Vogel J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae, and Brosimum guianense (Aubl. Huber, Moraceae, on the wistar rat reproductive system

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    Rita de Cássia da Silveira e Sá

    2010-12-01

    Full Text Available Um grupo de primatas da espécie Alouatta guariba foi estudado em seu habitat natural na Mata Atlântica, onde foi observada uma drástica redução populacional dessa espécie. Suspeita-se que essa redução se deve à inibição da fertilidade das fêmeas devido ao consumo de Apuleia leiocarpa (Vogel J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae e Brosimum guianense (Aubl. Huber, Moraceae. Estudos fitoquímicos indicaram a presença de cumarinas, especialmente em B. guianense e P. elegans, cujo efeito adverso no desenvolvimento de folículos ovarianos foi previamente relatado em ratas. Este trabalho investiga a atividade estrogênica dessas plantas no útero e vagina utilizando ratas castradas como modelo experimental. Ratas Wistar pubescentes castradas foram tratadas por cinco dias com os extratos hidroalcoólicos de A. leiocarpa, P. elegans and B. guianense (50 mg/rata. Foram analisados os seguintes parâmetros: peso de útero e hipófise, cornificação e abertura vaginal. Os resultados preliminares obtidos mostraram que a administração dos extratos não alterou significativamente as variáveis analisadas, indicando, indiretamente, a ausência de efeito estrogênico no sistema reprodutor das ratas tratadas com as plantas citadas. Esses dados sugerem que o consumo dessas plantas não está relacionado com a redução populacional observada no grupo de primatas da espécie A. guariba.A group of primates (Alouatta guariba was studied in its natural habitat, where a drastic populational reduction was detected. It is suspected that this reduction is due to the inhibition of fertility caused by the consumption of Apuleia leiocarpa (Vogel J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae, and Brosimum guianense (Aubl. Huber, Moraceae. These plants are reported to have cumarins, which have been shown to affect ovarian follicular development in rats. This work investigates the estrogenic activity of these plants on the uterus

  13. New hardware and software platform for experiments on a HUBER-5042 X-ray diffractometer with a DISPLEX DE-202 helium cryostat in the temperature range of 20-300 K

    Science.gov (United States)

    Dudka, A. P.; Antipin, A. M.; Verin, I. A.

    2017-09-01

    Huber-5042 diffractometer with a closed-cycle Displex DE-202 helium cryostat is a unique scientific instrument for carrying out X-ray diffraction experiments when studying the single crystal structure in the temperature range of 20-300 K. To make the service life longer and develop new experimental techniques, the diffractometer control is transferred to a new hardware and software platform. To this end, a modern computer; a new detector reader unit; and new control interfaces for stepper motors, temperature controller, and cryostat vacuum pumping system are used. The system for cooling the X-ray tube, the high-voltage generator, and the helium compressor and pump for maintaining the desired vacuum in the cryostat are replaced. The system for controlling the primary beam shutter is upgraded. A biological shielding is installed. The new program tools, which use the Linux Ubuntu operating system and SPEC constructor, include a set of drivers for control units through the aforementioned interfaces. A program for searching reflections from a sample using fast continuous scanning and a priori information about crystal is written. Thus, the software package for carrying out the complete cycle of precise diffraction experiment (from determining the crystal unit cell to calculating the integral reflection intensities) is upgraded. High quality of the experimental data obtained on this equipment is confirmed in a number of studies in the temperature range from 20 to 300 K.

  14. Avaliação preliminar do potencial estrogênico de Apuleia leiocarpa (Vogel J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae, and Brosimum guianense (Aubl. Huber, Moraceae, no sistema reprodutor de ratos Wistar

    Directory of Open Access Journals (Sweden)

    Rita de Cássia da Silveira e Sá

    2010-08-01

    Full Text Available Um grupo de primatas da espécie Alouatta guariba foi estudado em seu habitat natural na Mata Atlântica, onde foi observada uma drástica redução populacional dessa espécie. Suspeita-se que essa redução se deve à inibição da fertilidade das fêmeas devido ao consumo de Apuleia leiocarpa (Vogel J.F. Macbr., Fabaceae, Platypodium elegans Vogel, Fabaceae e Brosimum guianense (Aubl. Huber, Moraceae. Estudos fitoquímicos indicaram a presença de cumarinas, especialmente em B. guianense e P. elegans, cujo efeito adverso no desenvolvimento de folículos ovarianos foi previamente relatado em ratas. Este trabalho investiga a atividade estrogênica dessas plantas no útero e vagina utilizando ratas castradas como modelo experimental. Ratas Wistar pubescentes castradas foram tratadas por cinco dias com os extratos hidroalcoólicos de A. leiocarpa, P. elegans and B. guianense (50 mg/rata. Foram analisados os seguintes parâmetros: peso de útero e hipófise, cornificação e abertura vaginal. Os resultados preliminares obtidos mostraram que a administração dos extratos não alterou significativamente as variáveis analisadas, indicando, indiretamente, a ausência de efeito estrogênico no sistema reprodutor das ratas tratadas com as plantas citadas. Esses dados sugerem que o consumo dessas plantas não está relacionado com a redução populacional observada no grupo de primatas da espécie A. guariba.

  15. Spatial distribution of the amazon river prawn Macrobrachium Amazonicum (Heller, 1862 (Decapoda, Caridea, Palaemonidae in two perennial creeks of an estuary on the northern coast of Brazil (Guajará Bay, Belém, Pará Distribuição espacial do camarão-da-amazônia - Macrobrachium Amazonicum (Heller, 1862 (Decapoda, Caridea, Palaemonidae em dois canais perenes de um estuário da costa norte do Brasil (Baía do Guajará - Belém, Pará, Brasil

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    BS. Bentes

    2011-11-01

    Full Text Available Macrobrachium amazonicum is the most frequently consumed freshwater crustacean by river communities of the Amazon. Despite its relative abundance and vast knowledge on the species from data on cultivated specimens, little is known regarding its biology in the natural environment, especially its use of creeks that are strongly influenced by the tide. Specimens of Macrobrachium amazonicum were collected in September 2006 (dry season and March 2007 (rainy season from two perennial creeks of the Guajará Bay in the state of Pará (northern Brazil, using traps similar to the matapis used by local fishermen to identify the spatial distribution of the species. Shrimps of all sizes use the tidal creeks in both seasons, including for breeding purposes. The greatest abundance of the species occurred in headwater areas and in the dry season. It is suggested that abundant allochthonous organic matter and the preference for protected areas may explain the abundance and breeding activity of this species in the headwaters of the creeks.Macrobrachium amazonicum é o crustáceo dulcícola mais frequentemente consumido pelas populações ribeirinhas da Amazônia. Entretanto, apesar de sua relativa abundância e vasto conhecimento da espécie a partir de dados de cultivo, pouco se conhece sobre sua biologia no ambiente natural, especialmente quanto à forma de utilização de canais fortemente influenciados pelas marés. Amostras desse camarão foram coletadas em setembro/06 (período seco e março/07 (período chuvoso, em dois canais perenes da Baía do Guajará, Pará, utilizando armadilhas (matapis como as utilizadas pelos pescadores locais para identificar a distribuição espacial dos organismos. Os canais de maré são utilizados por camarões de todos os tamanhos nas duas estações do ano, inclusive para a reprodução. A maior abundância de indivíduos da espécie foi encontrada no período seco, nas áreas a montante dos canais . Postula-se que a

  16. Digestibilidade aparente da energia e proteína das farinhas de resíduo da filetagem da tilápia do Nilo (Oreochromis niloticus e da corvina (Plagioscion squamosissimus e farinha integral do camarão canela (Macrobrachium amazonicum para a tilápia do Nilo Apparent digestibility of energy and protein of tilapia (Oreochromis niloticus and corvina (Plagioscion squamosissimus by-product meal, and canela crayfish (Macrobrachium amazonicum meal for Nile

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    Wilson Rogério Boscolo

    2004-02-01

    Full Text Available O experimento foi conduzido objetivando determinar os coeficientes de digestibilidade aparente (CDa da energia bruta (EB e proteína bruta (PB, das farinhas de peixe obtidas a partir de resíduos de filetagem da corvina (FC, resíduos da filetagem da Tilápia (FT e farinha integral de camarão canela (FM para tilápia do Nilo. Foram utilizados 40 peixes revertidos sexualmente, com peso médio de 40 g, acondicionados em um tanque de alimentação de 500L. A coleta de fezes foi feita em duas cubas cilíndricas com fundo cônico, de 150L. A determinação dos CDa foi feita por metodologia indireta, tendo sido utilizado 0,1% de óxido crômico (Cr2O3, como indicador incorporado à ração. As médias de temperatura, oxigênio dissolvido, pH e condutividade elétrica, durante o período experimental, foram de 28,5 ± 0,5ºC; 3,57 ± 0,12 mg/L; 7,21 ± 0,03; e 0,18 ± 0,01 mS/cm, respectivamente. Os CDa para a PB e EB foram de 70,67 e 54,45 para FC; 67,09 e 48,52 para FT; e 88,79 e 68,38 para FM, apresentando valores de proteína (% e energia (kcal/kg digestíveis, na matéria natural, de 37,50 e 2107,46 para FC; 28,72 e 1927,18 para a FT; e 53,74 e 2763,23 para FM, respectivamente. Os alimentos estudados têm potencial para utilização na alimentação da tilápia do Nilo, sendo necessária a determinação dos seus níveis de inclusão em rações para as diferentes fases de cultivo da espécie.The trial was conducted to evaluate the apparent digestibility coefficients (CDa of gross energy (EB and crude protein (PB of tilapia (FT and corvina (FC processing by-product meal, and canela crayfish (Macrobrachium amazonicum meal (FM, for Nile tilapia fingerlings. Forty sexual reverted fishes, with average weight of 40 g, were allotted to 500 L feeding tanks. Feces collection was performed at two 150 L conical tanks. CDa was evaluated by an indirect method, with 0.1% chromic oxide (Cr2O3 as the indicator. Average temperature, dissolved oxygen, pH and

  17. Sobrevivência de espécies arbóreas plantadas em clareiras causadas pela colheita de madeira em uma floresta de terra firme no município de Paragominas na Amazônia brasileira Survival of seedlings planted in gaps after harvesting in a terra firme rain forest in Paragominas region in the Brazilian Amazonia

    Directory of Open Access Journals (Sweden)

    Jaqueline Macêdo Gomes

    2010-03-01

    Full Text Available Analisou-se a sobrevivência de mudas plantadas em 400 clareiras causadas por exploração florestal de impacto reduzido, em floresta de terra firme na Amazônia Oriental. Foram plantadas 3.818 mudas de 17 espécies, das quais apenas Schizolobium amazonicum não ocorre na área de estudo. A distância entre as mudas plantadas foi de aproximadamente 5m. As avaliações ocorreram em 2005 e 2006. Com base na sobrevivência das mudas aos 11 meses após o plantio, as espécies indicadas para o enriquecimento de clareiras são: Schizolobium amazonicum, Cedrela odorata, Jacaranda copaia, Manilkara huberi, Astronium gracile, Pouteria bilocularis, Tabebuia impetiginosa,Pseudopiptadenia suaveolens, Cordia goeldiana, Parkia gigantocarpa, Simarouba amara, Sterculia pilosa, Laetia procera, Dinizia excelsa e Schefflera morototoni. Estudos sobre a taxa de crescimento, em períodos mais longos, são necessários para confirmar a utilização dessas espécies em plantios de enriquecimento de clareiras oriundas de exploração florestal, como alternativa para aumentar a produtividade e o valor econômico das florestas naturais manejadas na Amazônia brasileira.Survival of seedlings planted in 400 gaps created by reduced impact logging in a terra firme forest in the Eastern Amazonia was evaluated. 3,818 seedlings from 17 species occurring in the study area, except for Schizolobium amazonicum (paricá, which is rare in natural forests of Paragominas region, were planted in the gaps. Spacing of planted seedlings was 5m. According to survival of seedlings during 11 months after planting, the species Schizolobium amazonicum, Cedrela odorata, Jacaranda copaia, Manilkara huberi, Astronium gracile, Pouteria bilocularis, Tabebuia impetiginosa,Pseudopiptadenia suaveolens, Cordia goeldiana, Parkia gigantocarpa, Simarouba amara, Sterculia pilosa, Laetia procera, Dinizia excelsa and Schefflera morototoni can be suggested for enriching in gaps created by reduced impact logging

  18. COMPARISON BETWEEN TEST METHODS TO DETERMINE WOOD EMBEDMENT STRENGTH PARALLEL TO THE GRAIN

    OpenAIRE

    Almeida,Diego Henrique de; Dias,Antonio Alves

    2016-01-01

    ABSTRACT This study compares the test methods according to the ABNT NBR 7190:1997, EN 383:2007, ASTM D5764:2007, EUROCODE 5:2004, NDS:2001 standards in order to provide support to establish a new test method for determining the embedment strength of wood parallel to the grain. Parallel-to-grain tests were carried out for six wood species (Schizolobium amazonicum; Pinus elliottii; Pinus oocarpa; Hymenaea spp.; Lyptus(r): hybrid Eucalyptus grandis and Eucalyptus urophylla, and Goupia glabra) us...

  19. Produção de serapilheira em sistema agroflorestal multiestratificado no Estado de Rondônia, Brasil Litter production in multistrata agroforestry system in Rondônia State, Brazil

    Directory of Open Access Journals (Sweden)

    Fernando Luíz de Oliveira Corrêa

    2006-12-01

    Full Text Available Objetivou-se com este trabalho avaliar a produção de serapilheira em diferentes coberturas frutíferas e florestais componentes de um sistema agroflorestal multiestratificado localizado no município de Ouro Preto do Oeste, RO, Brasil. As espécies avaliadas foram: mangueira (Mangifera indica L., fruta-pão (Artocarpus altilis (Parkinson Fosberg, cupuaçuzeiro (Theobroma grandiflorum Schum, abacateiro (Persea americana Mill., cacaueiro (Theobroma cacao L. sombreado com gliricídia (Gliricidia sepium (Jacq. Walp. e as espécies florestais, a bandarra (Schizolobium amazonicum Huber ex Ducke e a teca (Tectona grandis L.f.. Como referência foi utilizada uma área de vegetação natural (capoeira, de 8 anos de idade. A deposição anual de serapilheira entre o período de outubro de 2002 e setembro de 2003 foi de 13,38 t ha-1 para a vegetação natural, 4,02 t ha-1 para bandarra, 3,43 t ha-1 para gliricídia, 2,86 t ha-1para abacateiro, 2,54 t ha-1 para fruta-pão, 1,40 t ha-1 para o cupuaçuzeiro, 1,16 t ha-1 para o cacaueiro, 1,12 t ha-1 para mangueira e 1,07 t ha-1 para a teca. A vegetação natural, a bandarra e o cacaueiro apresentaram uma maior deposição no período seco (verão, enquanto que a fruta-pão, cupuaçuzeiro, mangueira, teca, gliricídia e abacateiro as maiores deposições foram no período chuvoso (inverno. Por outro lado a serapilheira acumulada sobre o solo foi de 14,61 t ha-1 na mangueira, 12,8 t ha-1 na bandarra, 12,73 t ha-1 na vegetação natural, 12,04 t ha-1, no abacateiro, 9,87 t ha-1 no cacaueiro/gliricídia, 9,88 t ha-1 no cupuaçuzeiro, 9,05 t ha-1 na fruta-pão e 7,39 t ha-1 na teca.One study was made to evaluate litter production in different fruitful coverings and forest components of a multistrata agroforestry system located in Ouro Preto do Oeste district (RO, Brazil. The studied species were: mango tree (Mangifera indica L., breadfruit tree (Artocarpus altilis (Parkinson Fosberg, cupuassu tree (Theobroma

  20. Tthe covenant in Ulrich Huber's enlightened theology, jurisprudence ...

    African Journals Online (AJOL)

    This investigation gains value as a result of its emphasis on the prominence of the covenant in the inextricably linked disciplines of theology, jurisprudence and political theory; as well as its revitalisation of the complicated nature of the covenant. What also comes to the fore is the role of pre-liberalism in the evolution of the ...

  1. Explicit solutions of the Rand Equation | Huber | International ...

    African Journals Online (AJOL)

    In this paper the meaning of a nonlinear partial differential equation (nPDE) of the third-order is shown to the first time. The equation is known as the 'Rand Equation' and belongs to a class of less studied nPDEs. Both the explicit physical meaning as well as the behaviour is not known until now. Therefore we believe it is ...

  2. the covenant in ulrich huber's enlightened theology, jurisprudence

    African Journals Online (AJOL)

    platform from which John Locke and Jean-Jacques Rousseau could launch their secular visions on political and legal theory based on natural law. BIBLIOGRAPHY. BAKER, J.W.. 1980. Heinrich Bullinger and the covenant. Ohio: Ohio University Press. BODIN, J. 1566. Methodus ad facilem historiarum cognitionem. Paris.

  3. Carbon and nutrient stocks of three Fabaceae trees used for forest restoration and subjected to fertilization in Amazonia.

    Science.gov (United States)

    Jaquetti, Roberto K; Gonçalves, José Francisco C

    2017-01-01

    Amazonia is crucial to global carbon cycle. Deforestation continues to be one of the main causes of the release of C into the atmosphere, but forest restoration plantations can reverse this scenario. However, there is still diffuse information about the C and nutrient stocks in the vegetation biomass. We investigated the carbon and nutrient stocks of Fabaceae trees (Inga edulis, Schizolobium amazonicum and Dipteryx odorata) subjected to fertilization treatments (T1 - no fertilization; T2 - chemical; T3 - organic; and T4 - organic and chemical fertilization) in a degraded area of the Balbina Hydroelectric Dam, AM - Brazil. As an early successional species, I. edulis stocked more C and nutrients than the other two species independent of the fertilization treatment, and S. amazonicum stocked more C than D. odorata under T1 and T4. The mixed species plantation had the potential to stock 4.1 Mg C ha-1 year-1, while I. edulis alone could stock 9.4 Mg C ha-1 year-1. Mixing species that rapidly assimilate C and are of significant ecological and commercial value (e.g., Fabaceae trees) represents a good way to restore degraded areas. Our results suggest that the tested species be used for forest restoration in Amazonia.

  4. Carbon and nutrient stocks of three Fabaceae trees used for forest restoration and subjected to fertilization in Amazonia

    Directory of Open Access Journals (Sweden)

    ROBERTO K. JAQUETTI

    2017-08-01

    Full Text Available ABSTRACT Amazonia is crucial to global carbon cycle. Deforestation continues to be one of the main causes of the release of C into the atmosphere, but forest restoration plantations can reverse this scenario. However, there is still diffuse information about the C and nutrient stocks in the vegetation biomass. We investigated the carbon and nutrient stocks of Fabaceae trees (Inga edulis, Schizolobium amazonicum and Dipteryx odorata subjected to fertilization treatments (T1 - no fertilization; T2 - chemical; T3 - organic; and T4 - organic and chemical fertilization in a degraded area of the Balbina Hydroelectric Dam, AM - Brazil. As an early successional species, I. edulis stocked more C and nutrients than the other two species independent of the fertilization treatment, and S. amazonicum stocked more C than D. odorata under T1 and T4. The mixed species plantation had the potential to stock 4.1 Mg C ha-1 year-1, while I. edulis alone could stock 9.4 Mg C ha-1 year-1. Mixing species that rapidly assimilate C and are of significant ecological and commercial value (e.g., Fabaceae trees represents a good way to restore degraded areas. Our results suggest that the tested species be used for forest restoration in Amazonia.

  5. Ecofunctional Traits and Biomass Production in Leguminous Tree Species under Fertilization Treatments during Forest Restoration in Amazonia

    Directory of Open Access Journals (Sweden)

    Roberto K. Jaquetti

    2016-04-01

    Full Text Available Background: Choosing the correct species and fertilization treatments is a determining factor in the success of forest restoration. Methods: A field study was conducted in a degraded area near the Balbina hydroelectric dam in Amazonas State (AM, Brazil, to evaluate two hypotheses: (i leguminous tree species exhibit differences in growth, leaf nutrient content, and photosynthetic nutrient use efficiencies; and (ii differences in these characteristics depend on the fertilization treatments to which the species have been subjected. Dipteryx odorata, Inga edulis and Schizolobium amazonicum were subjected to the following treatments: (T1 unfertilized control; (T2 post-planting chemical fertilization; (T3 post-planting organic fertilization and (T4 combined chemical and organic post-planting fertilization. Results: In general, I. edulis had the highest absolute growth rate of biomass under all of the fertilization treatments. I. edulis and S. amazonicum showed the highest growth rates under the T4 treatment. D. odorata showed the greatest responses under the T2 and T4 treatments. Native leguminous trees with higher photosynthetic performance and better nutrient use efficiency exhibited greater growth and biomass production. Conclusion: The results suggest that an adequate balance between leguminous species selection and fertilization will aid in the success of forest restoration in Amazonia.

  6. Unbegleitete minderjährige Flüchtlinge im Migrationsrecht / Bertold Huber

    Index Scriptorium Estoniae

    Huber, Bertold

    2016-01-01

    Alaealiste, saatjata sisserändajate õigusliku seisundi probleemidest; laste ja noorte majutamise, hoolduse ja abistamise 28.10.2015 jõustunud seadusest. Täistekst (12 lk.) ainult elektroonilises versioonis

  7. Entomofauna associada a reflorestamentos experimentais no município de Pau d'Arco, Pará Entomofauna associated with experimental reforestation in Pau d'Arco, Pará

    Directory of Open Access Journals (Sweden)

    Alexandre Mehl Lunz

    2011-12-01

    Full Text Available Este estudo objetivou verificar a ocorrência de insetos em reflorestamentos experimentais com paricá, Schizolobium parahyba var. amazonicum (Fabaceae; acácia, Racosperma mangium (Fabaceae e teca, Tectona grandis (Lamiaceae, na região de Pau d'Arco, PA, associando os efeitos sazonais e ontogenéticos nos plantios. O estudo foi conduzido entre os meses de maio de 2006 a junho de 2007 e constou de levantamentos mensais de insetos associados a plantios com idades de três a 16 meses. Houve associação positiva entre a ocorrência de insetos e suas respectivas injúrias com a sazonalidade e o desenvolvimento das plantas. Ao menos um pico populacional de insetos desfolhadores, sugadores e/ou polinizadores foi observado nas três espécies florestais. A análise de agrupamento confirmou a associação entre ocorrência de insetos, período chuvoso e idade da planta, destacando-se (a lepidópteros em T. grandis, (b coleópteros desfolhadores em S. parahyba; (c acridídeos e lepidópteros em R. mangium; (d cicadelídeos em S. parahyba e T. grandis; e (e apídeos em R. mangium.This study aimed to verify the occurrence of insects in experimental reforestation with Schizolobium parahyba var. amazonicum (Fabaceae known as paricá, Racosperma mangium (Fabaceae known as acacia and Tectona grandis (Lamiaceae known as teca in the region of Pau d'Arco, Pará State, Brazil associating the seasonal and ontogenetic effects in plantations. The study was conducted from May 2006 to June 2007 and consisted of monthly surveys of insects associated with plantations aging 3 to 16 months. There was a positive association between the occurrence of insects and their injuries with seasonality and plant development. At least one population peak of defoliators, sucking and / or pollinators were observed in three tree species. Cluster analysis confirmed the association between the occurrence of insects, rainy season and plant age, especially (a lepidopteran in T. grandis, (b

  8. COMPARISON BETWEEN TEST METHODS TO DETERMINE WOOD EMBEDMENT STRENGTH PARALLEL TO THE GRAIN

    Directory of Open Access Journals (Sweden)

    Diego Henrique de Almeida

    Full Text Available ABSTRACT This study compares the test methods according to the ABNT NBR 7190:1997, EN 383:2007, ASTM D5764:2007, EUROCODE 5:2004, NDS:2001 standards in order to provide support to establish a new test method for determining the embedment strength of wood parallel to the grain. Parallel-to-grain tests were carried out for six wood species (Schizolobium amazonicum; Pinus elliottii; Pinus oocarpa; Hymenaea spp.; Lyptus(r: hybrid Eucalyptus grandis and Eucalyptus urophylla, and Goupia glabra using four diameters (8 mm, 10 mm, 12 mm and 16 mm for the metal pin fasteners (bolts. The experimental results obtained according to the EN 383:2007 standard were closer to the specific values for the metal-dowel connections design used by ABNT NBR 7190:1997, which are considered equal compression parallel to the grain. The use of maximum embedment force or the force causing displacement of 5 mm between the bolt and the test-piece as criteria for determining embedment strength for EN 383:2007 appears to be more appropriate than the criteria used by the Brazilian and American Standards.

  9. Redescription of Alinema amazonicum (Travassos, 1960) n. comb., a philometrid nematode with unusual morphology

    Czech Academy of Sciences Publication Activity Database

    Moravec, František; Scholz, Tomáš; Dyková, Iva; Kuchta, Roman; Fiala, Ivan; Kohn, A.

    2006-01-01

    Roč. 92, č. 1 (2006), s. 138-144 ISSN 0022-3395 R&D Projects: GA ČR GA524/03/0061 Institutional research plan: CEZ:AV0Z60220518 Keywords : Philometra * Alinema * Peru Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine Impact factor: 1.300, year: 2006

  10. Correlation among water quality parameters of grow-out ponds of Macrobrachium amazonicum

    Directory of Open Access Journals (Sweden)

    Erlei Cassiano Keppeler

    2008-12-01

    Full Text Available Pond water quality is basic for the success of aquaculture, especially in ponds containing freshwater prawns. The variables considered most important are the dissolved oxygen and the ammonia-nitrogen. Twelve 0.01ha earthen ponds were stocked with 20 juveniles.m-2. Prawns were fed on commercial diet at a rate of 7 to 9% of biomass until the 14th week. After 145 days of stocking, all ponds were drained and harvested. The following water parameters were determined weekly: temperature, dissolved oxygen, oxygen biochemical demand, pH, total alkalinity, electrical conductivity, nitrate-N, nitrite-N, ammonia-N, total nitrogen, soluble orthophosphate, total phosphate, chlorophyll a, chlorophyll b, chlorophyll c, pheophytin, total suspended solids and turbidity. Water exchange and daily feeding affected water quality slightly. Correlations among water quality parameters were either weak or absent. The limnological variables analyzed showed that the highest correlations were between the dissolved oxygen and ammonia-nitrogen and between nitrite and turbidity.

  11. Water transparency of Macrobrachium amazonicum ponds under different feeding regimens and selective harvests

    Directory of Open Access Journals (Sweden)

    Erlei Cassiano Keppeler

    2008-12-01

    Full Text Available In aquaculture systems, water transparency is affected by water supply, feeding rate and fertilization. A study was conducted from December 19, 2003 to May 12, 2004 for a period of approximately 120 days. Twelve 0.01ha earthen ponds were used with 1m deep water. Prawns were fed commercial diet at a rate of 7 to 9% of biomass until the 14th week. Then, three groups of three ponds were fed with 3%, 5% and 7% of prawn biomass. The remaining three other ponds were subjected to combined harvest. The amount of penetrating light was calculated according to Lambert's Law, described as Iz = Ioe-kz. Evaluation of the data using Kruskall-Wallis, complemented by LSD test, showed a significant difference between treatments of 3 and 5% (p 0.05.

  12. Phytosociology in agroforestry systems of different ages in the town of Medicilândia, Pará, Brazil = Fitossociologia em sistemas agroflorestais com diferentes idades de implantação no município de Medicilândia, PA

    Directory of Open Access Journals (Sweden)

    Fábio Miranda Leão

    2017-03-01

    Full Text Available Agroforestry systems are emerging as an alternative to the degradation of natural resources, since they allow for harmony between agriculture and forest species, guaranteeing environmental sustainability. The aim of this work was to evaluate floristic composition and compare the structure of three agroforestry systems of 20, 30 and 40 years of age, in the town of Medicilândia, in the State of Pará. For the floristic and structural analysis, a forest census was carried out of the three agroforestry systems, recording all tree individuals with a diameter at breast height >10 cm. In analysing the horizontal structure, the absolute and relative phytosociological parameters of density and dominance were considered. The absolute and relative parameters of sociological position and natural regeneration were calculated when analysing the vertical structural of the systems. For the analysis of the Expanded Importance Value Index (IVIA, all the relative vertical and horizontal parameters were added together. The agroforestry systems displayed an inverted-J diametric distribution. As they are key species when planting forests, Swietenia macrophylla and Tabebuia impetignosa were the most important in each agroforestry system. Natural regeneration favoured the establishment of species with commercial value that were not part of the initial arrangement of the AFSs, such as Bagassa Guianenses, Tabebuia serratifolia, Schizolobium amazonicum and Dipteryx odorata, demonstrating the economic and ecological sustainability of these systems. = Os sistemas agroflorestais surgem como alternativa à degradação dos recursos naturais, pois possibilitam a harmonia entre agricultura e espécies florestais, garantindo a sustentabilidade ambiental. Objetivou-se com o presente trabalho avaliar a composição florística e comparar a estrutura de três sistemas agroflorestais com idades de 20, 30 e 40 anos no Município de Medicilândia, PA. Para análise florística e

  13. Larval Pseudoproleptus sp. (Nematoda: Cystidicolidae) found in the Amazon river prawn Macrobrachium amazonicum (Decapoda: Palaemonidae) in Brazil

    Czech Academy of Sciences Publication Activity Database

    Moravec, František; Santos, C. P.

    2009-01-01

    Roč. 95, č. 3 (2009), s. 634-638 ISSN 0022-3395 R&D Projects: GA ČR(CZ) GA524/06/0170; GA MŠk LC522 Institutional research plan: CEZ:AV0Z60220518 Keywords : Pseudoproleptus * Macrobrachium * Brazil Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine Impact factor: 1.195, year: 2009

  14. Identification of 5-hydroxy-tryptamine (bufotenine) in takini (Brosimum acutifolium Huber subsp acutifolium CC Berg, Moraceae), a shamanic potion used in the Guiana Plateau

    OpenAIRE

    Moretti, Christian; Gaillard, Y.; Grenand, Pierre; Bevalot, F.; Prevosto, J.M.

    2006-01-01

    This paper is the first thorough analysis of takini, a hallucinogen used by the shamans of several peoples in Suriname, French Guiana, and the region east of the Para in Brazil. The drug is contained in the latex of the Brosimum acutifolium tree, and until now, its psychotropic properties appeared inconsistent with the more general medicinal uses of the tree in the surrounding region. Our chemical and botanical studies reveal that the active ingredient of takini is bufotenine; and that this c...

  15. Revision, phylogeny, and microhabitat shifts in the Southeast Asian spider genus Aetana (Araneae, Pholcidae

    Directory of Open Access Journals (Sweden)

    Bernhard A. Huber

    2015-12-01

    Full Text Available The previously poorly known Southeast Asian spider genus Aetana Huber, 2005 is revised. Fifteen species are newly described, and the first SEM data and a first phylogenetic analysis of the genus are presented. Four species groups are well supported, one restricted to Borneo, two restricted to the Philippines, and one ranging from the Philippines to Fiji. The cladistic analysis and field observations suggest that the ancestor of Aetana built its web close to the ground, in confined spaces among and under rocks and logs. In at least two cases, evolutionary shifts of microhabitat resulted in species being adapted to life in higher forest strata, with correlated morphological and behavioral changes (lighter coloration; longer abdomen; additional sheet in web or more strongly domed web. The following species are newly described: A. abadae Huber, sp. nov., A. baganihan Huber, sp. nov., A. banahaw Huber, sp. nov., A. kiukoki Huber, sp. nov., A. libjo Huber, sp. nov., A. loboc Huber, sp. nov., A. lozadae Huber, sp. nov., A. manansalai Huber, sp. nov., A. ocampoi Huber, sp. nov., A. paragua Huber, sp. nov. and A. pasambai Huber, sp. nov. from the Philippines; A. gaya Huber, sp. nov., A. indah Huber, sp. nov., A. lambir Huber, sp. nov. and A. poring Huber, sp. nov. from northern Borneo. The female of A. kinabalu Huber, 2005 is newly described. A potential case of female genital dimorphism is documented in A. ocampoi Huber, sp. nov.

  16. New data on the morphology of Nilonema senticosum (Nematoda, Philometridae), a parasite of Arapaima gigas (Pisces), with notes on another philometrid, Alinema amazonicum, in Peru

    Czech Academy of Sciences Publication Activity Database

    Moravec, František; Scholz, Tomáš; Kuchta, Roman; Dyková, Iva; Posel, P.

    2006-01-01

    Roč. 51, č. 4 (2006), s. 279-285 ISSN 1230-2821 R&D Projects: GA ČR(CZ) GA524/06/0170; GA ČR GA524/04/0342; GA ČR GD524/03/H133; GA MŠk LC522 Institutional research plan: CEZ:AV0Z60220518 Keywords : Nilonema * Alinema * Peru Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine Impact factor: 0.772, year: 2006

  17. The effect of sub-lethal doses of dieldrin on the ventilatory and cardiac activity in two species of shrimps.

    Science.gov (United States)

    Lawrence, V; Young, R E; Mansingh, A

    1986-01-01

    The effect of dieldrin on the heart and ventilatory activity in the shrimps Macrobranchium faustinum and Macrobrachium amazonicum was studied over 4 and 7 day exposure periods, respectively. In M. faustinum, ventilatory rate increased by 43% and heart rate by 14.4%. In M. amazonicum, the ventilatory and heart rates decreased by 21 and 6%, respectively. In M. amazonicum ventilatory reversal frequency, an index of respiratory stress, was 6.7 times higher than the control values. All the changes, except for M. amazonicum heart rate were significant at the 0.01 level of probability.

  18. Robust Sequential Analysis for Special Capacities

    OpenAIRE

    高橋, 一

    1985-01-01

    Huber type robustness will be considered for some extensions of Wald's Sequential Probability Ratio Test, including Wald's three decision problem and the Kiefer-Weiss formulation. The results of Huber (1965, 1968), Huber and Strassen (1973), Rieder (1977) and Osterreicher (1978) will be extended to derive a least favorable tuple in the multiple decision problem. And then the asymptotically least favorable KieferWeiss procedure together with its asymptotic relative efficiency for the s-contami...

  19. Real-Time Swept Source Optical Coherence Tomography Imaging of the Human Airway Using a Microelectromechanical System Endoscope and Digital Signal Processor

    Science.gov (United States)

    2008-07-01

    1429–1433. [PubMed: 17115049] 4. Adler DC, Chen Y, Huber R, Schmitt J, Connolly J, Fujimoto JG. Three-dimensional endomicroscopy using optical coherence...rate ultrahigh-speed wavelength- swept semiconductor laser. Opt. Lett 2005;30:3159–3161. [PubMed: 16350273] 7. Huber R, Wojtkowski M, Fujimoto JG...19516464] 8. Huber R, Adler DC, Fujimoto JG. Buffered Fourier domain mode locking: unidirectional swept laser sources for optical coherence

  20. Heterochrony in mandible development of larval shrimp (Decapoda: Caridea)--a comparative morphological SEM study of two carideans.

    Science.gov (United States)

    Batel, Annika; Melzer, Roland R; Anger, Klaus; Geiselbrecht, Hannes

    2014-11-01

    Mandible development in the larval stages I-V of two palaemonid shrimp species, Palaemon elegans and Macrobrachium amazonicum, was analyzed using scanning electron microscopy, light microscopy, and confocal laser scanning microscopy. In contrast to the zoea I of P. elegans, first-stage larvae of M. amazonicum are nonfeeding. At hatching, the morphology of the mandibles is fully expressed in P. elegans, while it appears underdeveloped in M. amazonicum, presenting only small precursors of typical caridean features. In successive zoeal stages, both species show similar developmental changes, but the mandibular characters of the larvae in M. amazonicum were delayed compared to the equivalent stages in P. elegans, especially in the development of submarginal setae and mandible size. In conclusion, our results indicate heterochrony (postdisplacement) of mandible development in M. amazonicum compared to that in P. elegans, which is related to initial lack of mandible functionality or planktivorous feeding at hatching, respectively. This conclusion is supported by comparison with other palaemonid zoeae exhibiting different feeding modes. Our data suggest that an evolutionary ground pattern of mandible morphology is present even in species with nonfeeding first-stage larvae. © 2014 Wiley Periodicals, Inc.

  1. Evolution of genital asymmetry, exaggerated eye stalks, and extreme palpal elongation in Panjange spiders (Araneae: Pholcidae

    Directory of Open Access Journals (Sweden)

    Bernhard Huber

    2015-12-01

    Full Text Available We describe several new species of the previously monotypic Panjange lanthana species group from the Philippines and document their extraordinary morphology. Some species show strong male genital asymmetry, a phenomenon that seems to be exceedingly rare in spiders. Males of most species have eye stalks, and in two species these eye stalks are among the longest ever recorded in spiders. Some species show a tendency for male genital (pedipalp elongation, and one species has the longest and thinnest palps ever recorded in Pholcidae. A cladistic analysis is performed including all described and several undescribed species of Panjange (except for one “problem species”, supporting the lanthana group and its close relationship with members of the possibly paraphyletic cavicola group. The following eight new species are described: Panjange malagos Huber sp. nov.; Pa. casaroro Huber sp. nov.; Pa. camiguin Huber sp. nov.; Pa. hamiguitan Huber sp. nov.; Pa. isarog Huber sp. nov.; Pa. dinagat Huber sp. nov.; Pa. marilog Huber sp. nov.; Pa. bukidnon Huber sp. nov.

  2. Outlier detection algorithms for least squares time series regression

    DEFF Research Database (Denmark)

    Johansen, Søren; Nielsen, Bent

    We review recent asymptotic results on some robust methods for multiple regression. The regressors include stationary and non-stationary time series as well as polynomial terms. The methods include the Huber-skip M-estimator, 1-step Huber-skip M-estimators, in particular the Impulse Indicator Sat...

  3. Discussion of 'Breakdown and Groups'

    NARCIS (Netherlands)

    Genton, M.; Lucas, A.

    2005-01-01

    The concept of breakdown point was introduced by Hampel [Ph.D. dissertation (1968), Univ. California, Berkeley; Ann. Math. Statist. 42 (1971) 1887-1896] and developed further by, among others, Huber [Robust Statistics (1981). Wiley, New York] and Donoho and Huber [In A Festschrift for Erich L.

  4. Wood anatomy of the neotropical Sapotaceae : XVII. Gambeya

    Science.gov (United States)

    Bohumil Francis Kukachka

    1980-01-01

    Gambeya is an African genus to which Aubréville added Gambeya excelsa (Huber) Aubr., based on the Amazonian Chrysophyllum excelsum Huber. Whether Gambeya is the appropriate taxon for the American species remains to be resolved. Wood specimens indicate that several species occur in the Americas ranging from Southern Mexico to the Peruvian Amazon. The woods of the...

  5. 29 CFR 782.2 - Requirements for exemption in general.

    Science.gov (United States)

    2010-07-01

    .... 695; Porter v. Poindexter, 158 F.—(2d) 759 (C.A. 10); Keeling v. Huber & Huber Motor Express, 57 F...); Porter v. Poindexter, 158 F. (2d) 759 (C.A. 10)) Except insofar as the Commission has found that the... and dispatcher); Levinson v. Spector Motor Service, 330 U.S. 649; Porter v. Poindexter, 158 F. (2d...

  6. New leaf- and litter-dwelling species of the genus Pholcus from Southeast Asia (Araneae, Pholcidae

    Directory of Open Access Journals (Sweden)

    Bernhard Huber

    2016-05-01

    Full Text Available We describe eight new species of the genus Pholcus, and document their microhabitats. Four species are assigned to the previously described Pholcus ethagala group: P. tanahrata Huber sp. nov., P. uludong Huber sp. nov., and P. bukittimah Huber sp. nov. from the Malay Peninsula, and P. barisan Huber sp. nov. from Sumatra. These species are all litter-dwellers that build domed sheet webs on the undersides of large dead leaves on the ground. The other four species are assigned to newly created species groups: the P. tambunan group with two species from northern Borneo: P. tambunan Huber sp. nov. and P. bario Huber sp. nov.; and the P. domingo group with two species from the Philippines, Mindanao: P. domingo Huber sp. nov. and P. matutum Huber sp. nov. These latter four species are leaf-dwellers that build barely visible silk platforms tightly attached to the undersides of live leaves. The main rationale for this paper is to provide part of the taxonomic and natural history background for upcoming phylogenetic and evolutionary (microhabitat shifts analyses.

  7. Genetic polymorphism, molecular characterization and relatedness of Macrobrachium species (Palaemonidae) based on RAPD-PCR.

    Science.gov (United States)

    Guerra, A L; Lima, A V B; Taddei, F G; Castiglioni, L

    2010-11-30

    The prawn genus Macrobrachium belongs to the family Palaemonidae. Its species are widely distributed in lakes, reservoirs, floodplains, and rivers in tropical and subtropical regions of South America. Globally, the genus Macrobrachium includes nearly 210 known species, many of which have economic and ecological importance. We analyzed three species of this genus (M. jelskii, M. amazonicum and M. brasiliense) using RAPD-PCR to assess their genetic variability, genetic structure and the phylogenetic relationship between them and to look for molecular markers that enable separation of M. jelskii and M. amazonicum, which are closely related syntopic species. Ten different random decamer primers were used for DNA amplification, yielding 182 fragments. Three of these fragments were monomorphic and exclusive to M. amazonicum or M. jelskii and can be used as specific molecular markers to identify and separate these two species. Similarity indices and a phylogenetic tree showed that M. amazonicum and M. jelskii are closest to each other, while M. brasiliense was the most differentiated species among them; this may be attributed to the different habitat conditions to which these species have been submitted. This information will be useful for further studies on these important crustacean species.

  8. Osmoregulation in larvae and juveniles of two recently separated Macrobrachium species: Expression patterns of ion transporter genes.

    Science.gov (United States)

    Boudour-Boucheker, Nesrine; Boulo, Viviane; Charmantier-Daures, Mireille; Anger, Klaus; Charmantier, Guy; Lorin-Nebel, Catherine

    2016-05-01

    In this comparative study, osmoregulatory mechanisms were analyzed in two closely related species of palaemonid shrimp from Brazil, Macrobrachium pantanalense and Macrobrachium amazonicum. A previous investigation showed that all postembryonic stages of M. pantanalense from inland waters of the Pantanal are able to hyper-osmoregulate in fresh water, while this species was not able to hypo-osmoregulate at high salinities. In M. amazonicum originating from the Amazon estuary, in contrast, all stages are able to hypo-osmoregulate, but only first-stage larvae, late juveniles and adults are able to hyper-osmoregulate in fresh water. The underlying molecular mechanisms of these physiological differences have not been known. We therefore investigated the expression patterns of three ion transporters (NKA α-subunit, VHA B-subunit and NHE3) following differential salinity acclimation in different ontogenetic stages (stage-V larvae, juveniles) of both species. Larval NKAα expression was at both salinities significantly higher in M. pantanalense than in M. amazonicum, whereas no difference was noted in juveniles. VHA was also more expressed in larvae of M. pantanalense than in those of M. amazonicum. When NHE3 expression is compared between the larvae of the two species, further salinity-related differences were observed, with generally higher expression in the inland species. Overall, a high expression of ion pumps in M. pantanalense suggests an evolutionary key role of these transporters in freshwater invasion. Copyright © 2016 Elsevier Inc. All rights reserved.

  9. Layers of Neuroscience

    NARCIS (Netherlands)

    Dumoulin, Serge O

    2017-01-01

    In a patch of cortex, laminae connect to different parts of the brain. Huber et al. (2017) demonstrate the ability of human neuroimaging to derive laminar information flow between brain regions, paving the way for human neuroscience applications.

  10. Hea nali võib peituda raamatus / Gert Kiiler

    Index Scriptorium Estoniae

    Kiiler, Gert

    2007-01-01

    Arvustus: Leer, Jaak. Savumees Einaril on kogu aeg buss katki. Tallinn : Jutulind, 2006 ; Huber, Markus, Treichler, Robert. Keegi pole nii vinge kui meie : uimased britid, tobedad sakslased, pinges prantslased ja veel 36 lootusetut juhtumit. Tallinn : Olion, 2006

  11. The association between client type and condom use with steady ...

    African Journals Online (AJOL)

    The association between client type and condom use with steady and unsteady partners among persons seeking HIV testing and counseling services in Kenya. Elizabeth Broel, Larissa Brunner Huber, Jan Warren-Findlow, Elizabeth Racine ...

  12. Life's crucible.

    Science.gov (United States)

    Radetsky, P

    1998-02-01

    Research by German chemists Gunter Wachtershauser and Claudia Huber about the origins of life is reviewed. Other theories about the beginning of life on Earth are examined with comments by noted researchers.

  13. DMPD: Lipopolysaccharide sensing an important factor in the innate immune response toGram-negative bacterial infections: benefits and hazards of LPShypersensitivity. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available chet S, Keck S, Fejer G, Huber M, Schutze N, Beutler B,Galanos C. Immunobiology. 2008;213(3-4):193-203. Epub...ersensitivity. Authors Freudenberg MA, Tchaptchet S, Keck S, Fejer G, Huber M, Schutze N, Beutler B,Galanos C. Publication Immunobiol...ogy. 2008;213(3-4):193-203. Epub 2007 Dec 27. Pathway - PNG File (.png) SVG File (.

  14. Transfer of Problem Solving Skills from Touchscreen to 3D Model by 3- to 6-Year-Olds

    Directory of Open Access Journals (Sweden)

    Joanne Tarasuik

    2017-09-01

    Full Text Available Although much published research purports that young children struggle to solve problems from screen-based media and to transfer learning from a virtual to a physical modality, Huber et al. (2016’s recent study on children solving the Tower of Hanoi (ToH problem on a touchscreen app offers a clear counter example. Huber et al. (2016 reported that children transferred learning from media to the physical world. As this finding arguably differs from that of prior research in this area, the current study tests whether the Huber et al. (2016 results could be replicated. Additionally, we extended the scope of the Huber et al. (2016 work by testing a broader age range, including children as young as 3 years, and using a culturally distinct participant pool. The results of the current study verified Huber et al.’s (2016 conclusion that 4- to 6-year-old children are capable of transferring the ToH learning from touchscreen devices to the physical version of the puzzle. Children under 4 years of age, in contrast, showed little ability to improve at the ToH problem regardless of the practice modality—suggesting that a different problem-solving task is required to probe very young children’s ability to learn from touchscreen apps.

  15. Distribution of sandflies (Diptera:Psychodidae) on tree-trunks in a non-flooded area of the Ducke Forest Reserve, Manaus, AM, Brazil.

    Science.gov (United States)

    Cabanillas, M R; Castellón, E G

    1999-01-01

    Sandflies were collected in the base of tree-trunks in the seasons of high and least rainfall in the Ducke Forest Reserve, near Manaus in the State of Amazonas. Lutzomyia umbratilis was the most abundant sandfly species. Caryocar villosum, Chrysophyllum amazonicum, Dinizia excelsa, Eschweilera atropetiolata and Parkia multijuga were the tree species on which most sandflies were collected and relative abundance were related to trunk characteristics. Seasonal patterns of sandfly distribution in the forest were observed.

  16. Distribution of Sandflies (Diptera:Psychodidae on Tree-trunks in a Non-flooded Area of the Ducke Forest Reserve, Manaus, AM, Brazil

    Directory of Open Access Journals (Sweden)

    Cabanillas MRS

    1999-01-01

    Full Text Available Sandflies were collected in the base of tree-trunks in the seasons of high and least rainfall in the Ducke Forest Reserve, near Manaus in the State of Amazonas. Lutzomyia umbratilis was the most abundant sandfly species. Caryocar villosum, Chrysophyllum amazonicum, Dinizia excelsa, Eschweilera atropetiolata and Parkia multijuga were the tree species on which most sandflies were collected and relative abundance were related to trunk characteristics. Seasonal patterns of sandfly distribution in the forest were observed.

  17. Carnivory during Ontogeny of the Plagioscion squamosissimus: A Successful Non-Native Fish in a Lentic Environment of the Upper Paraná River Basin.

    Directory of Open Access Journals (Sweden)

    Mayara Pereira Neves

    Full Text Available This study evaluated feeding patterns and ontogenetic variations in a non-native fish species (Plagioscion squamosissimus in an isolated lake in the Upper Paraná River floodplain. Quarterly samplings were performed from April 2005 to February 2006 using plankton nets to capture larvae, seining nets for juveniles, and gill nets and trammel for adults. Stomach contents (n = 378 were examined according to the volumetric method in which the volume of each food item was estimated using graduated test tubes or a glass counting plate. During early development (larval stage, P. squamosissimus consumed mainly Cladocera and Copepoda. Juveniles showed a more diverse diet, including shrimp (Macrobrachium amazonicum, fish, aquatic insects (Trichoptera, Ephemeroptera, Chironomidae and pupae of Diptera and plants. It was notable the high proportion of cannibalism (23.3% in this stage. Adults consumed predominantly shrimp and fish. The use of food resources varied significantly between development stages (ANOSIM; r = 0.458; p<0.005, showing changes in food preferences during ontogeny. The Similarity Percentage Analysis (SIMPER indicated that Cladocera and Copepoda were responsible for the differences observed between the larval stages of pre-flexion, flexion and post-flexion. M. amazonicum and Chironomidae were responsible for the differences between juvenile and larval stages, while M. amazonicum and other fishes caused the differences between adults and other ontogenetic stages. These results are confirmed by the relationship between standard length and developmental periods (ANCOVA; r2 = 0.94; p<0.0001. In general, there were low values of trophic niche breadth. The essentially carnivorous habit from the early stages of P. squamosissimus and the predominant use of M. amazonicum by adults have important roles in feeding patterns of the species, suggesting a major contribution to its success and establishment, especially in lentic environments.

  18. The effect of sub-lethal doses of dieldrin on resting and active metabolism in two species of shrimps.

    Science.gov (United States)

    Lawrence, V; Young, R E; Mansingh, A

    1986-01-01

    The effects of dieldrin on the active (VaO2) and resting (VrO2) oxygen consumption rates of the shrimps Macrobrachium faustinum (De Sassure) and Macrobrachium amazonicum (Heller) were studied during exposure for 4 days at 0.01 p.p.b. and 7 days at 0.0002 p.p.b., respectively. The VrO2 of M. faustinum increased significantly (P less than 0.01) by 48% but the VaO2 decreased by 13%. The VrO2 and VaO2 decreased by 43 and 70%, respectively, in M. amazonicum. Thus, in both species the aerobic metabolic scope for activity decreased. The increased resting metabolic rate of the indigenous M. faustinum is ascribed to energy consuming responses which allow compensation for the effects of the stressor. The stressor may be said to have moved this species into a metabolic "zone of compensation". The decreased resting metabolic rate of the pond-cultured M. amazonicum is ascribed to greater susceptibility, more extensive metabolic breakdown and failure of compensatory responses. This species might be said to have been forced by the stressor into a metabolic "zone of collapse".

  19. Solid State Research, 1977:2

    Science.gov (United States)

    1977-05-15

    Semiconductors, 1971 (Springer-Verlag, Berlin, 1971), p. 212. 18. H. Haradu and M. Fujimoto , in Proceedings of the 4th International Conference on...Fetterman P. E. Tannenwald B. J. Clifton REFERENCES 1. H.G. Danielmeyer, G. Huber , W. W. Krühler, and J. P. Jeser, Appl. Phys. 2, 335 (1973...G. Huber , W. W. Krühler, W. Bludau, and H. G. Danielmeyer, J. Appl. Phys. 46, 3580 (1975). 18. H. Kildal, G. W. Iseler, N. Menyuk, and

  20. Analysis and Support Initiative for Structural Technology (ASIST) Delivery Order 0016: USAF Damage Tolerant Design Handbook: Guidelines For the Analysis and Design of Damage Tolerant Aircraft Structures

    Science.gov (United States)

    2002-11-01

    Catastrophic Failure of Thin Metal Sheet”. AIAA paper, pp. 71-113. D.A. Skinn, J.P. Gallagher, A.P. Berens, P.D. Huber , and J. Smith (1994). Damage...1973). Fracture Toughness Evaluation by R-Curve Method. ASTM STP 527. American Society for Testing and Materials. W.T. Fujimoto (1976, May 4-7...Prospects of Fracture Mechanics, Noordhoff, pp. 237-250. D.A. Skinn, J.P. Gallagher, A.P. Berens, P.D. Huber , and J. Smith (1994). Damage Tolerant

  1. Impurity and Defect Interactions in GaAs.

    Science.gov (United States)

    1984-02-29

    H, Kookitu A, Ohta K. Fujimoto M, 1976, Jn 5ph..s 5, Pp 11-17. Stillman G E, Wolfe C M, Korn D H, 1976, Proc 13th Int Conf Phvs Semi, pp 623-626...St. Commun. Englert T., Instone T.. Uihiein C.. Williams P. J. and 24. 473 (1977). Wright H. C.. p.145. (c) Killoran N.. Cavenett B. C. 16. Huber A. M...and Nakanisi T.. 19. Kasahara J. and Watanabe N.. Jap. JI AppI. Phys. 19. p.l109. (i) Linh N. T.. Huber A.MN.. Etienne P., Morillot LI151 (1980). 0

  2. Role of Altered mGluR Activity in Cognitive Impairments in TSC: Implications for a Novel Method of Treatment

    Science.gov (United States)

    2012-04-01

    Bear, M.F., Huber, K.M., and Warren, S.T. (2004). The mGluR theory of fragile X mental retardation. Trends Neurosci 27, 370-377. Conn, P.J...7746–7750 (2002). 21. Bear, M. F., Huber, K. M. & Warren, S. T. The mGluR theory of fragile X mental retardation. Trends Neurosci. 27, 370–377 (2004). 22...defining factor. The most common clinical features are mental retardation, epilepsy, autism, anxiety and mood disorders. Fragile X syndrome (FXS

  3. On Distributed Wargaming in Operational C2 Systems Using Object-Oriented Programming Languages,

    Science.gov (United States)

    1985-06-01

    are possibilities to economize on these processing requirements. For example, Faught and Klahr [13) describe " proximity detection " algorithms aimed...Systems Analysis and Modelling in Defence (Huber Ed.), New York - London 1983, pp. [13) Faught, W. S., Klahr, P.: An Analysis of Proximity - Detection and

  4. Spectroscopic Classification of Two Supernovae

    Science.gov (United States)

    Gomez, S.; Blanchard, P.; Nicholl, M.; Berger, E.

    2018-02-01

    We obtained optical spectroscopic observations of 2 transients reported to the Transient Name Server by the ATLAS survey (Tonry et al. 2011, PASP, 123, 58; Tonry et al., ATel #8680) and the Pan-STARRS Survey for Transients (PSST; Huber et al., ATel #7153; http://star.pst.qub.ac.uk/ps1threepi/).

  5. Size distribution and roundness of clasts within pseudotachylytes of ...

    Indian Academy of Sciences (India)

    Bhuban Mohan Behera

    2017-06-06

    Jun 6, 2017 ... cia from the Dhala impact structure, north-central India: Texture, Mineralogy and Geochemical characterization;. Tectonophys. 649 18–32. Philpots A R 1964 Origin of pseudotachyletes; Am. J. Sci. 262(8) 1008–1035. Ramsay J G and Huber M I 1987 The techniques of modern structural geology: Folds and ...

  6. Tightness of M-estimators for multiple linear regression in time series

    DEFF Research Database (Denmark)

    Johansen, Søren; Nielsen, Bent

    We show tightness of a general M-estimator for multiple linear regression in time series. The positive criterion function for the M-estimator is assumed lower semi-continuous and sufficiently large for large argument: Particular cases are the Huber-skip and quantile regression. Tightness requires...

  7. Finite Algorithms for Robust Linear Regression

    DEFF Research Database (Denmark)

    Madsen, Kaj; Nielsen, Hans Bruun

    1990-01-01

    The Huber M-estimator for robust linear regression is analyzed. Newton type methods for solution of the problem are defined and analyzed, and finite convergence is proved. Numerical experiments with a large number of test problems demonstrate efficiency and indicate that this kind of approach may...

  8. On robust tail index estimation under random censorship | Sayah ...

    African Journals Online (AJOL)

    type distributions in the framework of randomly censored samples, based on the ideas of Kaplan-Meier integration using the huberized M-estimator of the tail index. We derive their asymptotic results. We illustrate the performance and the ...

  9. Author Details

    African Journals Online (AJOL)

    Huber, Adam. Vol 29, No 2 (2017) - Articles Mindfulness for adolescent chronic pain: a pilot feasibility study. Abstract. ISSN: 1728-0583. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  10. Synthesis of size-controlled Bi particles by electrochemical deposition

    Indian Academy of Sciences (India)

    Wintec

    conditions (Heremans and Thrush 1999; Dresselhaus et al. 2003). A few of the reported papers on the preparation of. Bi nanostructures include the formation of one-dimen- sional wires by injecting liquid Bi into the nanochannels of porous anodic alumina membrane templates (Cheng et al. 2002; Huber et al 2003) and the ...

  11. Some explicit expressions for the probability distribution of force ...

    Indian Academy of Sciences (India)

    96: Art. No. 098001. Tighe B P, Socolar J E S, Schaeffer D G, Mitchener W G, Huber M L 2005 Force distributions in a triangular lattice of rigid bars. Phys. Rev. E 72: Art. No. 031306. Vargas W L, Murcia J C, Palacio L E, Dominguez D M 2003 Fractional diffusion model for force distribution in static granular media. Phys. Rev.

  12. DNA barcoding of a new record of epi-endophytic green algae ...

    Indian Academy of Sciences (India)

    2014-07-13

    Jul 13, 2014 ... nuisance for algal pure culture, and a number of techniques were developed to get rid of them (e.g. Dauby and Poulicek. 1995; Shacklock and Doyle ... Asian countries for promoting sea urchin larval settlement and metamorphosis in aquaculture fields (Kitamura et al. 1993). Ulvella leptochaete (Huber) ...

  13. The World of Organic Agriculture – Statistics and Emerging Trends (Session at the BIOFACH 2015)

    OpenAIRE

    Arbenz, Markus; Willer, Helga; Lernoud, Julia; Huber, Beate; Amarjit, Sahota

    2015-01-01

    The World of Organic Agriculture – Statistics and Emerging Trends (Session at the BIOFACH 2015) Presentations - Introduction (Markus Arbenz) - Organic Agriculture Worldwide: Current Statistics (Helga Willer, Julia Lernoud) - The World of Organic Agriculture: Regulations and Certification Emerging Trends 2015 (Beate Huber, Christiane Mannigel) - Global survey on Voluntary Sustainability Standards (VSS) (Julia Lernoud, Helga Willer) - Global Organic Food & Drink: Market Update...

  14. The World of Organic Agriculture (Session at the BIOFACH 2017)

    OpenAIRE

    Willer, Helga; Lernoud, Julia; Huber, Beate; Sahota, Amarjit

    2017-01-01

    The World of Organic Agriculture 2017 www.organic-world.net Presentations at the Session "The World of Organic Agriculture" - Organic Agriculture Worldwide 2017: Current Statistics (Dr. Helga Willer, Julia Lernoud) - Global survey on Voluntary Sustainability Standards (VSS) (Julia Lernoud, Dr. Helga Willer) - Regulations and Certification Emerging Trends 2017 (Beate Huber) - Global Organic Food & Drink: Market Update & Challenges (Amarjit Sahota)

  15. Using Aha! Moments to Understand Leadership Theory

    Science.gov (United States)

    Moore, Lori L.; Lewis, Lauren J.

    2012-01-01

    As Huber (2002) noted, striving to understand how leadership is taught and learned is both a challenge and an opportunity facing leadership educators. This article describes the "Leadership Aha! Moment" assignment used in a leadership theory course to help students recognize the intersection of leadership theories and their daily lives while…

  16. Professional and organisational socialisation during leadership ...

    African Journals Online (AJOL)

    The school catered for Grade R to Grade 7 and offered approximately. 70 extracurricular activities. .... an image-based social inquiry (Clandinin & Huber, in press; Clandinin et al., 2007;. Emmison, 2011) which was used to ..... which he changed “drastically” by refurnishing it and making it “brand new”. A fresh bowl of flowers ...

  17. Cephalometric Assessment of the Fourth Ventricles Using ...

    African Journals Online (AJOL)

    described for measuring the fourth ventricular size as a means to evaluate brain atrophy during the normal aging process and diseases (Huber et al., 1990). The planimetric method requires special equipment, is not universally available and has many common sources of error with the linear measurement (Sabattini et al.,.

  18. Development of a Smart Diagnostics Platform for Early-Stage Screening of Breast Cancer

    Science.gov (United States)

    2007-04-01

    Rotaxane in a Monolayer Assembly on an Electrode. J. Am. Chem. Soc. 2004, 126, 15520–15532. 40. Bunker, B. C.; Huber , D. L.; Kushmerick, J. G.; Dunbar...Kawaguchi, H.; Fujimoto , K. A Novel Preparation of Nonsymmetrical Microspheres Using the LangmuirBlodgett Technique. Langmuir 2000, 16, 7882–7886. 64

  19. Versatile Chromium-Doped Zinc Selenide Infrared Laser Sources

    Science.gov (United States)

    2010-05-01

    Huber , V. I. Levchenko, and V. N. Yakimovich, "Continuous wave diode pumped Cr2+:ZnSe and high power laser operation," in Advanced Solid-State...chalcogenide lasers," in Solid State Lasers and Amplifiers, A. Sennaroglu, J. G. Fujimoto , and C. R. Pollock, eds. (SPIE, Bellingham, WA, 2004), pp

  20. Photon-Enhanced Electron Attachment Processes in Discharge-Opening Switches.

    Science.gov (United States)

    1987-02-01

    Phys., 83, 1657 (1985). 14. T. Fujimoto , A. M. Rennert, and M.H.J. Wijnen, Ber. Bunsenges. Phys. Chem., 282 (1970). 14. C. E. Otis, J. L. Knee, and P...1986). 18. D. J. Donaldson and St. R. Leon, manuscript submitted for publication. 19. K. P. Huber and G. Rerzberg, Constants of Diatomic Molecules, Ian

  1. Organic Isothiocyanates: Dietary Modulators of Doxorubicin Resistance in Breast Cancer

    Science.gov (United States)

    2004-06-01

    Angerler, J.;Fiegl, M.;Zojer, N.;Raderer, M.;Haberl, I.;Andreeff, M. ; Huber , H. Blood 1996 88, 1747- 1754. 69. Kusuhara, H.;Suzuki, H. ;Sugiyama, Y. J Pharm...Mallia, F. H. Gartner, M. D. Provenzano, E. K. Fujimoto , N. M. Goeke, B. J. Olson, and D. C. Klenk. Measurement of protein using bicinchoninic acid. Anal

  2. Harnessing Novel Secreted Inhibitors of EGF Receptor Signaling for Breast Cancer Treatment

    Science.gov (United States)

    2008-04-01

    Clemmons, D. R. (2001) Endocr. Rev. 22, 800–817 47. Siwanowicz, I., Popowicz, G. M., Wisniewska, M., Huber , R., Kuenkele, K. P., Lang, K., Engh, R. A...Cell 10, 39-50 (2006). 25. Fujimoto , N. et al. High expression of ErbB family members and their ligands in lung adenocarcinomas that are sensitive to

  3. Beta 2-Microglobulin: A Novel Therapeutic Target for the Treatment of Human Prostate Cancer Bone Metastasis

    Science.gov (United States)

    2009-03-14

    doi:10.1016/S1383-5742 (03) 00033-4 11. Huber MA, Kraut N, Beug H (2005) Molecular requirements for epithelial–mesenchymal transition during tumor...K, Kamata N, Fujimoto R, et al. Increased invasion and matrix metalloproteinase-2 expression by Snail-induced mesenchymal transition in squamous

  4. Score Function of Distribution and Revival of the Moment Method

    Czech Academy of Sciences Publication Activity Database

    Fabián, Zdeněk

    2016-01-01

    Roč. 45, č. 4 (2016), s. 1118-1136 ISSN 0361-0926 R&D Projects: GA MŠk(CZ) LG12020 Institutional support: RVO:67985807 Keywords : characteristics of distributions * data characteristics * general moment method * Huber moment estimator * parametric methods * score function Subject RIV: BB - Applied Statistics, Operational Research Impact factor: 0.311, year: 2016

  5. The effect of anhydrous ammoniation on the nutritive value of whole ...

    African Journals Online (AJOL)

    unprocessed and ground barley grain (Laksesvela & Slagsvold,. 1980; Laksesvela, 1981) while it also serves as an extremely suitable preserving agent (Bothast, Adams, Hatfield &. Lancaster, 1975; Britt & Huber, 1976). Optimal treatment conditions for ammoniation of whole cereal grains have so far not been investigated.

  6. Genetics Home Reference: asphyxiating thoracic dystrophy

    Science.gov (United States)

    ... H, Lacaille F, Le Bourgeois M, Martinovic J, Salomon R, Sigaudy S, Malan V, Munnich A, Le Merrer M, Le Quan Sang ... 29. Citation on PubMed Huber C, Cormier-Daire V. ... insights gained from eight new cases and review of reported cases with Jeune syndrome ( ...

  7. potential bag filter for volatile organic amines

    Indian Academy of Sciences (India)

    VADDYPALLY SHIVAIAH

    2018-03-22

    Mar 22, 2018 ... be described as a potential bag filter for volatile organic amines. Keywords. Volatile organic amines; hydrogen ..... this bag filter, which can capture volatile amines to form. Figure 8. Thermal ellipsoid plot of ..... huber H, Baumann M and Amann A 2013 Blood and breath levels of selected volatile organic ...

  8. Microbial synthesis of iron-based nanomaterials—A review

    Indian Academy of Sciences (India)

    Nanoparticles; biosynthesis; microbes; iron reducing bacteria; sulphate reducing bacteria; magnetotactic bacteria. 1. Introduction. Nanoparticles are considered to be the building blocks for nanotechnology and are referred to as the particles having one or more dimensions of the order of 100 nm or less. (Huber 2005).

  9. Estimating cubic volume of small diameter tree-length logs from ponderosa and lodgepole pine.

    Science.gov (United States)

    Marlin E. Plank; James M. Cahill

    1984-01-01

    A sample of 351 ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and 509 lodgepole pine (Pinus contorta Dougl. ex Loud.) logs were used to evaluate the performance of three commonly used formulas for estimating cubic volume. Smalian's formula, Bruce's formula, and Huber's formula were tested to determine which...

  10. African Health Sciences - Vol 16, No 1 (2016)

    African Journals Online (AJOL)

    Association of type of birth attendant and place of delivery on infant mortality in sub-Saharan Africa · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Whitney A. Stanley, Larissa R. Brunner Huber, Sarah B. Laditka, Elizabeth F. Racine, 1-9.

  11. Pärnu jõgi - linna unustatud arengutelg = The Pärnu river - forgotten growth axis of the town / Rene Valner

    Index Scriptorium Estoniae

    Valner, René, 1972-

    2001-01-01

    Pärnu Linnavalitsuse ja Eesti Kunstiakadeemia korraldatud arhitektuuri ja kohamarketingi Riveside Workshop'ist 18.-28. VI 2001. a. Pärnus. Juhendajad: Viini arhitektuuribüroo Rataplan arhitektid Gerhard Huber ja Susanne Höhndorf, eesti arhitektid Siiri Vallner, Rene Valner ja Indrek Peil

  12. Topical Meeting of Broadband Analog and Digital Optoelectronics

    Science.gov (United States)

    1992-01-01

    coeffient is 13 pm/ 0 C. REFERENCES 1. K. L. Belsley, J. B. Carroll , L. A. Hess, D. R. Huber, and D. Schmadel, "Optically Multiplexed Interferometric...Dimension", BYTE, Nov. 1988. 2. T. M. Pinkston and U. Efron, "Optical Interconnects in the 3-D Computer for Fast Parallel Sorting", To Be Published in

  13. LEOS 1992 - Summer Topical Meeting Digest Held in Santa Barbara, California on July 29-12 August, 1992

    Science.gov (United States)

    1992-01-01

    stabilization of the grating since the temperature coeffient is 13 pm/ 0C. REFERENCES 1. K. L. Belsley, J. B. Carroll , L. A. Hess, D. R. Huber, and D...and J. Grinberg, "The Third Dimension", BYTE, Nov. 1988. 2. T. M. Pinkston and U. Efron, "Optical Interconnects in the 3-D Computer for Fast Parallel

  14. Conference Digest LEOS Summer Topical Meetings 1992

    Science.gov (United States)

    1992-12-09

    temperature coeffient is 13 pm/ 0 C. REFERENCES 1. K. L. Belsley, J. B. Carroll , L. A. Hess, D. R. Huber, and D. Schmadel, "Optically Multiplexed...than the optoelectronic packaging. References 1. M. J. Little and J. Grinberg, "The Third Dimension", BYTE, Nov. 1988. 2. T. M. Pinkston and U. Efron

  15. 61 Gender, Computer Access and Use as Predictors of Nigerian ...

    African Journals Online (AJOL)

    Nekky Umera

    computer games, males early socialization (Norris, 2001; Schumacher &. Moraham-Martin, 2001; Fountain, 2000). Previous studies in of respect gender and computer access and usage indicate that: there are persistent gender difference in computer attitude (Hashim &. Mustapha, 2004; Huber & Schofield, 1998; Durndell ...

  16. The Brosimum allene: a structural revision.

    Science.gov (United States)

    Hu, Gaojie; Liu, Kai; Williams, Lawrence J

    2008-12-04

    Insight derived from a synthetic model, calculated (13)C NMR data, and comparison to experimental data indicate that the proposed allenic structure A, originally assigned to an isolate from Brosimum acutifolium Huber, should be revised to B, a natural product and nonallenic substance, mururin C.

  17. Write-up for the diffractometer D1 at Risoe

    International Nuclear Information System (INIS)

    Bundgaard, J.; Krebs Larsen, F.; Lebech, B.; Nielsen, M.H.; Skaarup, P.

    1982-05-01

    Manual for the crystallographic program system used to control the 4-circle neutron diffractometer D1/TASII at DR3, Risoe. The mechanical part of the diffractometer consists of a monochromator part which allows an easy change of incident neutron wavelenght and a four-circle HUBER goniostate consisting of an Euler cradle (HUBER 512) and two horizontal goniometers (HUBER 440 and HUBER 430). The goniostate is computer controlled by a PDP-11/34 interfaced via CAMAC modules. The PDP-11/34 computer has a 128 k byte memory, two hard magnetic disc stations, a fast DEC-writer terminal and a screen terminal. The diffractometer can be operated remotely via modem and telephone line connections from remote stations such as the University of Aarhus and ILL, Grenoble. Minor parts of the software used to control the diffractometer were developed at Risoe while the major parts were a generous gift to Risoe from College 5, the diffraction group, at the Institute Laue-Langevin, Grenoble, France. (editors)

  18. Negotiating succession in a family business - a role play

    DEFF Research Database (Denmark)

    Pelzmann-Knafl, Sabine; Winkler, Ingo

    2017-01-01

    Negotiating succession is crucial for a family business. This role-play will enable students to simulate a family conference of the Mayer & Huber Ltd, a German-based but internationally operating producer of mechanical and electrical locking systems for the automotive industry. During the confere...

  19. o

    African Journals Online (AJOL)

    , clinical material and overall results. In: Gschwend N, Debrunner G, eds. Total Hip. Prosthesis, Bern: Hans Huber, 1976: 36-48. 5. Zaousis AL, Patikas AF. Experience \\\\~th THA in Greece; the first. 20 years. Clin Orthop 1989; 246: 39-47. . 6.

  20. Model Identification using Continuous Glucose Monitoring Data for Type 1 Diabetes

    DEFF Research Database (Denmark)

    Boiroux, Dimitri; Hagdrup, Morten; Mahmoudi, Zeinab

    2016-01-01

    This paper addresses model identification of continuous-discrete nonlinear models for people with type 1 diabetes using sampled data from a continuous glucose monitor (CGM). We compare five identification techniques: least squares, weighted least squares, Huber regression, maximum likelihood with...

  1. Sinogram restoration in computed tomography with an edge-preserving penalty.

    Science.gov (United States)

    Little, Kevin J; La Rivière, Patrick J

    2015-03-01

    With the goal of producing a less computationally intensive alternative to fully iterative penalized-likelihood image reconstruction, our group has explored the use of penalized-likelihood sinogram restoration for transmission tomography. Previously, we have exclusively used a quadratic penalty in our restoration objective function. However, a quadratic penalty does not excel at preserving edges while reducing noise. Here, we derive a restoration update equation for nonquadratic penalties. Additionally, we perform a feasibility study to extend our sinogram restoration method to a helical cone-beam geometry and clinical data. A restoration update equation for nonquadratic penalties is derived using separable parabolic surrogates (SPS). A method for calculating sinogram degradation coefficients for a helical cone-beam geometry is proposed. Using simulated data, sinogram restorations are performed using both a quadratic penalty and the edge-preserving Huber penalty. After sinogram restoration, Fourier-based analytical methods are used to obtain reconstructions, and resolution-noise trade-offs are investigated. For the fan-beam geometry, a comparison is made to image-domain SPS reconstruction using the Huber penalty. The effects of varying object size and contrast are also investigated. For the helical cone-beam geometry, we investigate the effect of helical pitch (axial movement/rotation). Huber-penalty sinogram restoration is performed on 3D clinical data, and the reconstructed images are compared to those generated with no restoration. We find that by applying the edge-preserving Huber penalty to our sinogram restoration methods, the reconstructed image has a better resolution-noise relationship than an image produced using a quadratic penalty in the sinogram restoration. However, we find that this relatively straightforward approach to edge preservation in the sinogram domain is affected by the physical size of imaged objects in addition to the contrast across the

  2. RESISTANCE TO THE ATTACK OF DRY-WOOD TERMITES (Cryptotermes brevis OF SIX WOOD SPECIES

    Directory of Open Access Journals (Sweden)

    Fabrício Gomes Gonçalves

    2006-03-01

    Full Text Available The dry wood termites are one of the largest causes of damages in wood used in Brazil. This work analyzed the attackof the Cryptotermes brevis in six commercials wood species in the north of the Rio de Janeiro and south of the Espírito Santo. The testobserved the number of holes, the percentage of died individuals and the damage of the pieces. When compared to the Pinus sp(reference, the species with less susceptibility to the attack were Cedrela fissilis, Cariocar brasiliense and Goupia glabra, that alsopresented the largest percentages of mortality of termites. The Schizolobium parahyba, Toona ciliata and the Tachigalia myrmecophyllawere the species with the highest level of damage.

  3. Rheological characterization of O/W emulsions incorporated with neutral and charged polysaccharides.

    Science.gov (United States)

    Vianna-Filho, Ricardo Padilha; Petkowicz, Carmen Lúcia Oliveira; Silveira, Joana Léa Meira

    2013-03-01

    The effects of polysaccharides, including xyloglucan from Hymenaea courbaril (XG), galactomannans from Schizolobium parahybae (GMSP) and Mimosa scabrella (GMMS), xanthan gum (XT), sodium hyaluronate (HNa) and Fucogel(®) (FG), on the rheological behavior of cosmetic emulsions were evaluated. These incorporations gave rise to six emulsified systems, denoted XGE, GMSPE, GMMSE, XTE, HNaE and FGE, respectively. The emulsion consistency was found to follow the trend GMSPE>XGE>HNaE>FGE>XTE>GMMSE. In general, the addition of polysaccharides increased the viscoelastic properties of the emulsions and decreased the creep compliance. The neutral polysaccharides (GMSPE, GMMSE) led to better stability of the emulsions after storing for 20 days relative to charged polymers. It was found that polysaccharides XG, GMSP and GMMS, which come from the seeds of native Brazilian plant species, might be used to modify the flow properties and stabilities of oil-water emulsions. Copyright © 2012 Elsevier Ltd. All rights reserved.

  4. Genetic improvement of forest tree species

    Directory of Open Access Journals (Sweden)

    Teotônio Francisco Assis

    2011-01-01

    Full Text Available Brazilian forestry sector is considered one of the most developed in the world, being the base for important industrialsegments which use wood as raw material. Tree breeding has played an important role on improving the competitiveness ofBrazilian forestry-based companies, especially for its positive reflexes on increasing adaptation, forestry productivity and woodquality. In spite of the importance of other forest trees for the economy, such as Schizolobium, Araucaria, Populus and Hevea, themain genera under genetic improvement in the country are Eucalyptus, Pinus, Acacia and Tectona. They are used by industries likepulp and paper, siderurgy, tannin, chips for exportation and lumber, constituting an important source of revenues for the Brazilian’seconomy, besides their positive social and environmental impacts. This paper presents a generic approach to genetic improvementaspects of these four major genera currently undergoing breeding in Brazil.

  5. Composition of shrimp populations (Crustacea: Decapoda in non-vegetated areas of two river islands in a Brazilian Amazon estuary

    Directory of Open Access Journals (Sweden)

    Priscila Sousa Vilela da Nóbrega

    2013-12-01

    Full Text Available This study investigates the shrimp found in non-vegetated areas of an estuary of the Amazon River. We ascertained the input of juveniles, species' biometrics and the influence of environmental factors on the abundance of species. The samples were collected monthly, from August 2006 to July 2007, in two places in the estuary, each next to an island. For collecting, we used a manual trawl to perform three hauls per month, totaling 36 samples per site. The abundance of shrimps was estimated as a function of the density of specimens per unit area. We used the Spearman's correlation to test the hypothesis that there is significant correlation between the average of the environmental variables measured and variations in shrimp density. The Kruskal-Wallis and the Mann-Whitney tests showed that there were significant differences in environment factors (temperature and salinity among the months and sites. We obtained 6,091 shrimps, from which 5,231 (85.88% were caught off the Arapiranga Island and 860 (14.12% off the Mosqueiro Island, Palaemonidae and Penaeidae were the only families recorded. Five species were collected: Macrobrachium amazonicum (Heller, 1862, Macrobrachium surinamicum Holthuis, 1948, Macrobrachium carcinus (Linnaeus, 1758, Macrobrachium rosenbergii (De Man, 1879, and Farfantepenaeus subtilis (Pérez-Farfante, 1967. The latter (pink shrimp was found for the first time in oligohaline environments (0-8. Macrobrachium amazonicum was the most abundant species. The recruitment of M. amazonicum juveniles was continuous throughout the year. The population of M. surinamicum was composed by juveniles and adults and that of F. subtilis exclusively by juveniles. The environmental factors analyzed were variable throughout the year and seem to explain the patterns of shrimp species occurrence in the region, the variation in their abundance and juvenile recruitment.

  6. Endemic shrimp Macrobrachium pantanalense as a test species to assess potential contamination by pesticides in Pantanal (Brazil).

    Science.gov (United States)

    Soares, Mayara Pereira; Jesus, Fátima; Almeida, Ana Rita; Zlabek, Vladimir; Grabic, Roman; Domingues, Inês; Hayd, Liliam

    2017-02-01

    Pantanal is a biome characterized by an extraordinary diversity and abundance of wildlife and houses several endemic species such as the freshwater shrimp Macrobrachium pantanalense. However, the increase in agriculture and husbandry activities in the region has contributed with residues of pesticides reaching aquatic systems. The main objective of this study is to assess the sensitivity of the endemic shrimp M. pantanalense compared with other freshwater species: the shrimp M. amazonicum, the crustacean Daphnia similis and the fish Danio rerio. The sensitivity of these organisms was assessed through acute exposure to copper and cypermethrin (through the formulation Barrage ® , widely used in Pantanal). For copper the species sensitivity decreased in the following order: D. similis (48 h-EC 50 0.051 mg/L) > M. pantanalense > D. rerio > M. amazonicum (48 h-LC 50 26.34 mg/L). Copper caused reduced length of shrimps and zebrafish and reduced heartbeat of zebrafish embryos. For cypermethrin the species sensitivity decreased in the following order: M. pantanalense (96 h-LC 50 0.05 μg/L) > M. amazonicum > D. similis > D. rerio (144 h-LC 50 1680 μg/L). Major effects of cypermethrin included reduced length of shrimps and zebrafish, as well as early hatching and increased incidence of developmental deformities in zebrafish embryos. This study highlights the importance of using endemic species for risk evaluations in sensitive biomes such as Pantanal. Moreover, it emphasizes the importance of testing pesticides toxicity as commercial formulations. Furthermore, we suggest that the endemic shrimp species M. pantanalense can be successfully used as a test species in ecotoxicology. Copyright © 2016 Elsevier Ltd. All rights reserved.

  7. New species and geographical records of dactylogyrids (Monogenea) of catfish (Siluriformes) from the Peruvian Amazonia

    Czech Academy of Sciences Publication Activity Database

    Mendoza-Palmero, Carlos Alonso; Scholz, Tomáš; Mendoza-Franco, E. F.; Kuchta, Roman

    2012-01-01

    Roč. 98, č. 3 (2012), s. 484-497 ISSN 0022-3395 R&D Projects: GA MŠk LC522; GA ČR GBP505/12/G112; GA ČR GD206/09/H026 Institutional research plan: CEZ:AV0Z60220518 Keywords : PARANA RIVER FLOODPLAIN * DEMIDOSPERMUS DACTYLOGYRIDAE * NEOTROPICAL MONOGENEA * ALINEMA-AMAZONICUM * TAPEWORMS CESTODA * GEN N * ANCYROCEPHALINAE * FISHES * BRAZIL * GILLS Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine Impact factor: 1.321, year: 2012 http://www.bioone.org/doi/abs/10.1645/GE-2941.1

  8. Tratamento de efluentes de carcinicultura por macrófitas aquáticas flutuantes Treatment of shrimp effluents by free-floating aquatic macrophytes

    Directory of Open Access Journals (Sweden)

    Gustavo Gonzaga Henry-Silva

    2008-02-01

    Full Text Available Avaliou-se neste estudo a eficiência de sistemas compostos de duas espécies de macrófitas aquáticas flutuantes (Eichhornia crassipes e Pistia stratiotes no tratamento de efluentes gerados por um viveiro de manutenção de reprodutores de camarões-canela (Macrobrachium amazonicum. Os sistemas de tratamento foram constituídos de 12 unidades experimentais com as macrófitas aquáticas e três sem plantas (controle. Foram analisadas amostras da água de abastecimento do viveiro de criação de camarões-d'água-doce, do efluente gerado e dos efluentes tratados. A remoção de nutrientes não diferiu significativamente entre as duas espécies vegetais. As maiores remoções foram obtidas para fósforo total (41,9% pelo controle; 71,6% por E. crassipes; 69,9% por P. stratiotes; 72,5% por E. crassipes + P. stratiotes e 72,1% por P. stratiotes + E. crassipes e para turbidez (30,6% pelo controle; 80,2% por E. crassipes; 75,2% por P. stratiotes; 79,8% por E. crassipes + P. stratiotes e 81,5% por P. stratiotes + E. crassipes. As macrófitas aquáticas foram eficientes na remoção de nitrogênio e fósforo dos efluentes de criação de M. amazonicum.The efficiency of systems composed of two species of floating aquatic macrophyte (Eichhornia crassipes and Pistia stratiotes to treat effluents from shrimp culture was evaluated in this research. The effluent originated from a pond populated with Macrobrachium amazonicum. Treatment systems consisted of 12 experimental tanks with aquatic macrophyte and three tanks without plants (control. Water samples were collected from the fresh water supply and before and after passing through the treatment systems. There are no differences in the removal of nutrients between the two species. The higher nutrient removal was observed for total phosphorus (41.9% by control; 71.6% by E. crassipes; 69.9 by P. stratiotes; 72.5% by E. crassipes + P. stratiotes and 72.1 by P. stratiotes + E. crassipes and turbidity (30.6% by

  9. Occurrence of the Indo-Pacific freshwater prawn Macrobrachium equidens Dana 1852 on the coast of Brazilian Amazonia, with notes on its reproductive biology.

    Science.gov (United States)

    Maciel, Cristiana R; Quadros, Manoel L; Abrunhosa, Fernando; Bastos, Sandra; Schneider, Horacio; Sampaio, Iracilda

    2011-06-01

    The freshwater prawn Macrobrachium equidens, which is native species of the Indo-Pacific Region, was recorded for the first time on the Amazon coast of Brazil. This species was found to inhabit the same environment as two native Macrobrachium species, M. amazonicum and M. acanthurus, and is morphologically very similar to the latter. The identification of the species was confirmed by the genetic analysis of sequences of the mitochondrial Cytochrome Oxidase (COI) gene. A detailed description of the morphological features and reproductive biology of M. equidens in this new environment is presented.

  10. Use of intertidal areas by shrimps (Decapoda in a brazilian Amazon estuary

    Directory of Open Access Journals (Sweden)

    HEBERT A. SAMPAIO

    2014-03-01

    Full Text Available The present work investigated the occupation and the correlation of the shrimp abundance in relation to environmental variables in different habitats (mangroves, salt marshes and rocky outcrops in an Amazon estuary. The collections were made in August and November 2009, at low syzygy tide on Areuá Beach, situated in the Extractive Reserve of Mãe Grande de Curuçá, Pará, Brazil totaling 20 pools. In each environment, we recorded the physical-chemical factors (pH, salinity, and temperature and measured the area (m2 and volume (m3 of every pool through bathymetry. The average pH, salinity, temperature, area and volume of tide pools were 8.75 (± 0.8 standard deviation, 35.45 (± 3, 29.49 °C (± 2.32, 27.41 m2 (± 41.18, and 5.19 m3 (± 8.01, respectively. We caught a total of 4,871 shrimps, distributed in three families and four species: Farfantepenaeus subtilis (98.36% (marine followed by Alpheus pontederiae (0.76% (estuarine, Macrobrachium surinamicum (0.45% and Macrobrachium amazonicum (0.43% predominantly freshwater. The species F. subtilis and A. pontederiae occurred in the three habitats, whereas M. surinamicum occurred in salt marsh and rocky outcrop and M. amazonicum only in marisma. Temperature and pH were the most important environmental descriptors that significantly affected the density and biomass of shrimps.

  11. A new species of Macrobrachium Spence Bate, 1868 (Decapoda, Palaemonidae), M. pantanalense, from the Pantanal, Brazil.

    Science.gov (United States)

    Dos Santos, Antonina; Hayd, Liliam; Anger, Klaus

    2013-01-01

    The neotropical species Macrobrachium amazonicum (Heller, 1862) is considered a particularly successful species, showing an extremely wide range of distribution (ca 4.000 km across). Populations assigned to this species live in estuaries along the northern and northeastern coasts of South America as well as in fresh water habitats in the Amazon, Orinoco and Paraná-Paraguay river basins. Following recent comparative studies that showed differential ecological, reproductive, developmental and physiological traits in geographically separated populations from the Amazon delta and the Pantanal region, Brazil, we examined the morphology of adult shrimps from these two regions. Based on significant differences, we conclude that the Pantanal population constitutes a new species, which is described here as Macrobrachium pantanalense. The main differences between M. amazonicum and the new species have been found in the morphology of the second pereiopod, the telson, and in the color patterns of both males and females. A modification on the key of American species of Macrobrachium is provided to accommodate the new species.

  12. Use of intertidal areas by shrimps (Decapoda) in a Brazilian Amazon estuary.

    Science.gov (United States)

    Sampaio, Hebert A; Martinelli-Lemos, Jussara M

    2014-03-01

    The present work investigated the occupation and the correlation of the shrimp abundance in relation to environmental variables in different habitats (mangroves, salt marshes and rocky outcrops) in an Amazon estuary. The collections were made in August and November 2009, at low syzygy tide on Areuá Beach, situated in the Extractive Reserve of Mãe Grande de Curuçá, Pará, Brazil totaling 20 pools. In each environment, we recorded the physical-chemical factors (pH, salinity, and temperature) and measured the area (m2) and volume (m3) of every pool through bathymetry. The average pH, salinity, temperature, area and volume of tide pools were 8.75 (± 0.8 standard deviation), 35.45 (± 3), 29.49 °C (± 2.32), 27.41 m2 (± 41.18), and 5.19 m3 (± 8.01), respectively. We caught a total of 4,871 shrimps, distributed in three families and four species: Farfantepenaeus subtilis (98.36%) (marine) followed by Alpheus pontederiae (0.76%) (estuarine), Macrobrachium surinamicum (0.45%) and Macrobrachium amazonicum (0.43%) predominantly freshwater. The species F. subtilis and A. pontederiae occurred in the three habitats, whereas M. surinamicum occurred in salt marsh and rocky outcrop and M. amazonicum only in marisma. Temperature and pH were the most important environmental descriptors that significantly affected the density and biomass of shrimps.

  13. Occurrence of the Indo-Pacific freshwater prawn Macrobrachium equidens Dana 1852 (Decapoda, Palaemonidae on the coast of Brazilian Amazonia, with notes on its reproductive biology

    Directory of Open Access Journals (Sweden)

    Cristiana R Maciel

    2011-06-01

    Full Text Available The freshwater prawn Macrobrachium equidens, which is native species of the Indo-Pacific Region, was recorded for the first time on the Amazon coast of Brazil. This species was found to inhabit the same environment as two native Macrobrachium species, M. amazonicum and M. acanthurus, and is morphologically very similar to the latter. The identification of the species was confirmed by the genetic analysis of sequences of the mitochondrial Cytochrome Oxidase (COI gene. A detailed description of the morphological features and reproductive biology of M. equidens in this new environment is presented.O camarão de água doce Macrobrachium equidens, nativo da região do Indo-Pacífico, foi registrada pela primeira vez na costa da Amazônia Brasileira. Esta espécie foi encontrada habitando o mesmo ambiente que duas espécies nativas do gênero Macrobrachium: M. amazonicum e M. acanthurus, e é morfologicamente muito similar à última. A identificação dessa espécie foi confirmada pela análise da seqüência genética do gene mitocondrial Citocromo Oxidase (COI. Uma descrição detalhada das características morfológicas e biologia reprodutiva de M. equidens neste novo ambiente é apresentada.

  14. Polyamines regulate phosphorylation-dephosphorylation kinetics in a crustacean gill (Na+, K+)-ATPase.

    Science.gov (United States)

    Lucena, Malson Neilson; Garçon, Daniela Pereira; Fontes, Carlos Frederico Leite; McNamara, John Campbell; Leone, Francisco Assis

    2017-05-01

    Aiming to clarify the mechanism of inhibition of (Na + , K + )-ATPase activity by polyamines, we examined the effects of exogenous putrescine, spermidine, and spermine on the kinetic behavior of phosphoenzyme-linked partial reactions using a microsomal gill (Na + , K + )-ATPase from juvenile and adult M. amazonicum, a freshwater palaemonid shrimp. The time course of phosphointermediate formation is greater (0.089 ± 0.006 s -1 ) in adults than in juveniles (0.053 ± 0.003 s -1 ) for spermidine, but similar to juveniles (0.059 ± 0.004 s -1 ) for putrescine. Maximum phosphointermediate formation for the (Na + , K + )-ATPase from juveniles decreased by 46% and 32% with spermidine and putrescine, respectively. In adults, maximum phosphointermediate levels decreased by 50% and 8%, respectively. For both spermidine and putrescine, dephosphorylation rates were higher for adults than for juveniles, and were higher than in controls without polyamines. Spermine had a negligible effect (amazonicum gill (Na + , K + )-ATPases. Our findings suggest that the phosphorylation/dephosphorylation steps of this gill enzyme may be regulated by polyamines during ontogenetic development.

  15. Carnivory during Ontogeny of the Plagioscion squamosissimus: A Successful Non-Native Fish in a Lentic Environment of the Upper Paraná River Basin.

    Science.gov (United States)

    Neves, Mayara Pereira; Delariva, Rosilene Luciana; Guimarães, Ana Tereza Bittencourt; Sanches, Paulo Vanderlei

    2015-01-01

    This study evaluated feeding patterns and ontogenetic variations in a non-native fish species (Plagioscion squamosissimus) in an isolated lake in the Upper Paraná River floodplain. Quarterly samplings were performed from April 2005 to February 2006 using plankton nets to capture larvae, seining nets for juveniles, and gill nets and trammel for adults. Stomach contents (n = 378) were examined according to the volumetric method in which the volume of each food item was estimated using graduated test tubes or a glass counting plate. During early development (larval stage), P. squamosissimus consumed mainly Cladocera and Copepoda. Juveniles showed a more diverse diet, including shrimp (Macrobrachium amazonicum), fish, aquatic insects (Trichoptera, Ephemeroptera, Chironomidae and pupae of Diptera) and plants. It was notable the high proportion of cannibalism (23.3%) in this stage. Adults consumed predominantly shrimp and fish. The use of food resources varied significantly between development stages (ANOSIM; r = 0.458; pamazonicum and Chironomidae were responsible for the differences between juvenile and larval stages, while M. amazonicum and other fishes caused the differences between adults and other ontogenetic stages. These results are confirmed by the relationship between standard length and developmental periods (ANCOVA; r2 = 0.94; pamazonicum by adults have important roles in feeding patterns of the species, suggesting a major contribution to its success and establishment, especially in lentic environments.

  16. Orientation and Polarisation Effects in Reactive Collisions

    Science.gov (United States)

    1989-01-01

    I. Schechter and R. D. Levine* The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel The angular...figures 2-5. This work was supported by the U.S.-Israel Binational Science Foundation (B.S.F.), Jerusalem, Israel. The Fritz Haber Research Center is...Chem. Phys., 1988, 88, 6255. 19 M. P. Docker, in preparation. 20 G. E. Busch and K. R. Wilson, J. Chem. Phys., 1972, 56, 3626. 21 J. R. Huber, Pure

  17. Spectroscopic Classification of Seven Supernovae

    Science.gov (United States)

    Blanchard, P.; Gomez, S.; Nicholl, M.; Berger, E.

    2018-01-01

    We obtained optical spectroscopic observations of 7 transients reported to the Transient Name Server by the ATLAS survey (Tonry et al. 2011, PASP, 123, 58; Tonry et al., ATel #8680), the Pan-STARRS Survey for Transients (PSST; Huber et al., ATel #7153; http://star.pst.qub.ac.uk/ps1threepi/), DPAC and the ESA Gaia Photometric Science Alerts Team (http://gsaweb.ast.cam.ac.uk/alerts), and the Tsinghua University-National Astronomical Observatories of China Transient Survey (TNTS).

  18. Berufliche Bildung aus wirtschaftspolitischer Sicht

    OpenAIRE

    Huber, Erwin

    2008-01-01

    Ausgehend von der aktuellen Diskussion über Bildung und der Forderung nach Verbesserung der Bildungsangebote spricht sich der Autor Erwin Huber (derzeit Bayerischer Staatsminister für Wirtschaft, Infrastruktur, Verkehr und Technologie) für eine Optimierung von Bildungsstrukturen und -methoden aus. Im Zusammenhang mit der beruflichen Bildung zeigt er Lösungsansätze auf und regt zu weiteren Diskussionen an. Die duale Berufsausbildung sieht er als „Erfolgsmodell“. Angesichts der Auswirkungen der...

  19. Exploring New Command and Control Concepts and Capabilities (Exploration de Nouveaux Concepts de Commandement et Controle et de Leurs Capacites)

    Science.gov (United States)

    2007-04-01

    Germany Mr. Geir Enemo NO FFI Mr. Fernando Freire PO Academia Militar Dr. Anne-Marie Grisogono Australia DSTO Dr. Richard Hayes US EBR Dr. Gary...IABG Mr. Arne Norlander SE Swedish Defense Research Agency Maj. Paulo Nunes PO Academia Militar Dr. Paul Phister US AFRL Mr. Valdur Pille CA DRDC...Reiner Huber GE IT IS Universitiat der Bundeswehr Ms. Danielle Martin US EBR Mr. Graham Mathieson UK DSTL Dr. James Moffat UK DSTL Maj. Paulo Nunes PO

  20. A Study of Organizational Information Search, Acquisition, Storage and Retrieval

    Science.gov (United States)

    1986-08-01

    edition. Indianapolis, IN: West . Daft, R.L, & Huber, G.P. 1986. Organizational Learning: Two Perspectives and an Integration. In Bacharach, S. and Tomasso...Scientists in Organizations, New York: John Wiley & Sons, 1966. Perrow, Charles , "A Framework for the Comparative Analysis of Organizations," American...system ( Churchman , 1971; Mitroff, 1974), we need to discredit what we know, to change for the naked sake of change to prevent ossification of our ideas

  1. The Use of Various Failure Criteria as Applied to High Speed Wear

    Science.gov (United States)

    2011-12-01

    Training Command In Partial Fulfillment of the Requirements for the Degree of Master of Science in Aeronautical Engineering David A. Huber, B.S.M.E Civilian...27 2.5.2 2D Plane Strain . . . . . . . . . . . . . . . . . . 28 2.6 FEA and Hydrocodes . . . . . . . . . . . . . . . . . . . 29 2.7 ABAQUS ...testing, and egress systems. In April 2003, a land speed record of 2,885 m/s (6,453 miles per hour) was set at the facility. A rocket sled train used

  2. Late Cretaceous (Maestrichtian) Calcareous Nannoplankton Biogeography with Emphasis on Events Immediately Preceding the Cretaceous/Paleocene Boundary

    Science.gov (United States)

    1993-02-01

    late Campanian through early Paleocene. PaleoceanographY , 2.L., 21-47. Barrera, E., and Huber, B. T., 1990. Evolution of Antarctic waters during the...nannofossil assemblages as a response to orbital forcing. I Paleoceanography , 5S6A, 845-865. Beaufort, L. E., and Aubry, M.-P., 1992. Paleoceanographic...planktonic foraminifera from Brazos River,3 Texas. Paleoceanography , 4, 287-332. Kent, D. V., and Gradstein, F. M., 1985. A Cretaceous and Jurassic

  3. Transactions of the Army Conference on Applied Mathematics and Computing (10th) Held at West Point, New York on 16-19 Jun 92

    Science.gov (United States)

    1993-03-01

    York xi Tuesday (continued) HOMOTOPY METHODS FOR SPARSE POLYNOMIAL SYSTEMS Birkett Huber, Cornell University, Ithaca, New York UNIQUE FACTORIZATIONS...STABILITY OF TWO TIME-SCALE SINGULARLY PERTURBED LINEAR INTEGRO -DIFFERENTIAL EQUATIONS G.S. Ladde, University of Texas at Arlington, Arlington, Texas, and S...define "nearness" is Hamming distance. Definition: The Hamming distance dH between two n-tuples is the number of places in which they differ . Channel noise

  4. Constrained potential method for false vacuum decays

    International Nuclear Information System (INIS)

    Park, Jae-hyeon

    2010-11-01

    A procedure is reported for numerical analysis of false vacuum transition in a model with multiple scalar fields. It is a refined version of the approach by Konstandin and Huber. The alteration makes it possible to tackle a class of problems that was difficult or unsolvable with the original method, i.e. those with a distant or nonexistent true vacuum. An example with an unbounded-from-below direction is presented. (orig.)

  5. Physiological Sociology. Endocrine Correlates of Status Behaviors,

    Science.gov (United States)

    1975-01-01

    pupil; mother- child ; friend-friend; employee-employer. Clearly, these may be hierarchically or horizontally arranged. Nevertheless, the rights and...sometimes constructed from child - hood experiences, fantasy, literature, or mythology. For sociological studies, 5 one would be concerned primarily with...characteristics. BioZogical Psychiatry 3: 77-83, 1971. Goldstein, M., Woodhall, B., Huber, W., Purpura , D., Barchas, J., Flynn, J., and Walter, R. (Organizers and

  6. Evaluation of Lands for Recreational Snowmobile Use (Guidelines for Natural Resources Management and Land Use Compatibility).

    Science.gov (United States)

    1981-05-01

    Percy , E. C., "The Snowmobile: Friend or Foe?" Journal of Trauma, Vol 12, No. 5 (May 1972), pp 444-446. Price, V. J., "Snowmobiles, The Winter Revolution...Fort Dix, NJ Hasset, John J., Agronomy Department, University of Illinois, Champaign, IL Huber, Phil, Environmental Offices, Fort Benning, GA Jackson ...Outdoor Recreation Director, Fort McCoy, WI Houser, James, Forester, Fort McCoy, WI Hutchinson, Julian, Land Manager, Fort McCoy, WI Jackson , Gary

  7. Results of experimental electron density determinations of Strychnine, a [1.1.1]-Propellane-Derivative, Adenosinemonophosphate and a Zinc-Dithiolate

    OpenAIRE

    Messerschmidt, Marc

    2010-01-01

    An existing low temperature diffractometer was extended with a CCD area detector. This enables electron density determinations at 20 K within one weak, if crystals with excellent quality are available. A Huber 4-circle goniometer equipped with a closed cycle cryostat (APD) was used. The extension with a Bruker-Apex detector was possible through DFG funding. This required a new goniometer control, that is now completely included in the Bruker software. The obtainable data...

  8. Atomic Physics at Accelerators: Laser Spectroscopy and Applications

    Science.gov (United States)

    Letokhov, Vladilen

    From 19 to 24 September, 1999, the First European Conference Atomic Physics at Accelerators: Laser Spectroscopy and Applications (APAC'99) was held at University of Mainz and Schloss Waldhausen (Budenheim, Germany) under the chairmanship of H. Backe and G. Huber. The idea of this up-to-date conference was associated with the 65th anniversary of Professor Ernst Otten (University of Mainz) who, together with H. Kluge, contributed much to the development of this work at CERN, University of Mainz, and Darmstadt.

  9. Quantitative 3D-OCT motion correction with tilt and illumination correction, robust similarity measure and regularization

    OpenAIRE

    Kraus, Martin F.; Liu, Jonathan J.; Schottenhamml, Julia; Chen, Chieh-Li; Budai, Attila; Branchini, Lauren; Ko, Tony; Ishikawa, Hiroshi; Wollstein, Gadi; Schuman, Joel; Duker, Jay S.; Fujimoto, James G.; Hornegger, Joachim

    2014-01-01

    Variability in illumination, signal quality, tilt and the amount of motion pose challenges for post-processing based 3D-OCT motion correction algorithms. We present an advanced 3D-OCT motion correction algorithm using image registration and orthogonal raster scan patterns aimed at addressing these challenges. An intensity similarity measure using the pseudo Huber norm and a regularization scheme based on a pseudo L0.5 norm are introduced. A two-stage registration approach was developed. In th...

  10. The Role of IQGAP1 in Breast Carcinoma

    Science.gov (United States)

    2012-10-01

    2002) J. Biol. Chem. 277, 7453–7465 34. Yamaoka-Tojo, M., Ushio-Fukai, M., Hilenski, L., Dikalov, S. I., Chen, Y. E., Tojo, T., Fukai, T., Fujimoto ,M...A., Lange, A., Hess, M. W., Polleux, J., Spatz, J. P., Krüger, M., Pfaller, K., Lambacher, A., Bloch, W., Mann, M., Huber , L. A., and Fässler, R

  11. Blood-Banking Techniques for Plateletpheresis in Swine

    Science.gov (United States)

    2014-05-01

    technique using a commercially avail- able human instrument (COBE Spectra, Gambro BCT) was well tolerated in dogs as long as calcium was administered.8 Our...Groman RP. 2008. Clinical and clinicopathologic effects of plateletpheresis on healthy donor dogs . Transfusion 48: 2214–2221. 9. Calzia E, Huber...for a standard. Transfusion 44:131–133. 27. Nanri H, Minakami S. 1983. Heat production of pig platelets in relation with glycolysis and

  12. Robust Learning of Fixed-Structure Bayesian Networks

    OpenAIRE

    Diakonikolas, Ilias; Kane, Daniel; Stewart, Alistair

    2016-01-01

    We investigate the problem of learning Bayesian networks in an agnostic model where an $\\epsilon$-fraction of the samples are adversarially corrupted. Our agnostic learning model is similar to -- in fact, stronger than -- Huber's contamination model in robust statistics. In this work, we study the fully observable Bernoulli case where the structure of the network is given. Even in this basic setting, previous learning algorithms either run in exponential time or lose dimension-dependent facto...

  13. Examination of the mGluR-mTOR Pathway for the Identification of Potential Therapeutic Targets to Treat Fragile X

    Science.gov (United States)

    2014-10-01

    and improves memory. Proc Natl Acad Sci U S A 95:15020-15025. Bear MF, Huber KM, Warren ST (2004) The mGluR theory of fragile X mental retardation... syndrome : dysregulated mGluR signaling and beyond. Neuropsychopharmacology 37:178-195. Hagerman PJ (2008) The fragile X prevalence paradox. J Med...NOTES 14. ABSTRACT Fragile X Syndrome (FXS) is a single gene disorder caused by loss of FMR1 gene function. This disease leads to cognitive impairment

  14. Injury Control Part 2: Strategies for Prevention

    Science.gov (United States)

    2000-01-01

    Destruction of Anti-Personnel Mines 15 9a&9b Crashworthy Fuel Systems 16 10 Parachute Landing Fall 17 11 EVA Spacewalk 18 12 Protective Gear 19 13...fire escapes ■ longer fuses on firecrackers ■ traffic-light phasing of automobiles and pedestrians at intersections ■ EVA spacewalk at night to...R. Watson (Ed.). Humana Press Inc.Totowa, NJ, 1995. 42. Huber, P. and R. Litan (Eds.). The Liability Maze : The Impact Of Liability Law on Safety

  15. Kepler Stellar Properties Catalog Update for Q1-Q17 DR25 Transit Search

    Science.gov (United States)

    Mathur, Savita; Huber, Daniel

    2016-01-01

    Huber et al. (2014) presented revised stellar properties for 196,468 Kepler targets, which were used for the Q1-Q16 TPSDV planet search (Tenenbaum et al. 2014). The catalog was based on atmospheric properties (i.e., temperature (Teff), surface gravity (log(g)), and metallicity ([FeH])) published in the literature using a variety of methods (e.g., asteroseismology, spectroscopy, exoplanet transits, photometry), which were then homogeneously fitted to a grid of Dartmouth (DSEP) isochrones (Dotter et al. 2008). The catalog was updated in early 2015 for the Q1-Q17 Data Release (DR) 24 transit search (Seader et al. 2015) based on the latest classifications of Kepler targets in the literature at that time. The methodology followed Huber et al. (2014). Here we provide updated stellar properties of 197,096 Kepler targets. Like the previous catalog, this update is based on atmospheric properties that were either published in the literature or provided by the Kepler community follow-up program (CFOP). The input values again come from different methods: asteroseismology, spectroscopy, flicker, and photometry. This catalog update was developed to support the SOC 9.3 TPSDV planet search (Twicken et al. 2016), which is expected to be the final search and data release by the Kepler project.In this document, we describe the method and the inputs that were used to build the catalog. The methodology follows Huber et al. (2014) with a few improvements as described in Section 2.

  16. The Huber’s Method-based Gas Concentration Reconstruction in Multicomponent Gas Mixtures from Multispectral Laser Measurements under Noise Overshoot Conditions

    Directory of Open Access Journals (Sweden)

    V. A. Gorodnichev

    2016-01-01

    Full Text Available Laser gas analysers are the most promising for the rapid quantitative analysis of gaseous air pollution. A laser gas analysis problem is that there are instable results in reconstruction of gas mixture components concentration under real noise in the recorded laser signal. This necessitates using the special processing algorithms. When reconstructing the quantitative composition of multi-component gas mixtures from the multispectral laser measurements are efficiently used methods such as Tikhonov regularization, quasi-solution search, and finding of Bayesian estimators. These methods enable using the single measurement results to determine the quantitative composition of gas mixtures under measurement noise. In remote sensing the stationary gas formations or in laboratory analysis of the previously selected (when the gas mixture is stationary air samples the reconstruction procedures under measurement noise of gas concentrations in multicomponent mixtures can be much simpler. The paper considers a problem of multispectral laser analysis of stationary gas mixtures for which it is possible to conduct a series of measurements. With noise overshoots in the recorded laser signal (and, consequently, overshoots of gas concentrations determined by a single measurement must be used stable (robust estimation techniques for substantial reducing an impact of the overshoots on the estimate of required parameters. The paper proposes the Huber method to determine gas concentrations in multicomponent mixtures under signal overshoot. To estimate the value of Huber parameter and the efficiency of Huber's method to find the stable estimates of gas concentrations in multicomponent stationary mixtures from the laser measurements the mathematical modelling was conducted. Science & Education of the Bauman MSTU 108 The mathematical modelling results show that despite the considerable difference among the errors of the mixture gas components themselves a character of

  17. Production and characterization of chitosan obtained from shrimp exoskeleton

    International Nuclear Information System (INIS)

    Almeida, Leticia P.; Aguiar, Nayara V.; Rodrigues, Willias da L.; Silva, Rafael S. da; Moreira, Carly K.P.

    2015-01-01

    Chitosan is a natural polymer, biocompatible, biodegradable and non-toxic. It's derived from the deacetylation of chitin, which constitutes the most part of the exoskeleton of insects, crustaceans and fungal cell wall. After cellulose, chitin is more organic compound found in nature. The Chitin was separated from others components of shrimp waste (Macrobrachium amazonicum) by a chemical process that involves three steps: demineralization, deproteination and depigmentation. The chitosan produced was characterized by potentiometric titration, to find the degree of deacetylation (85,32 %), determining the intrinsic viscosity to define its molecular weight (503.223 g/mol), and X-ray diffraction to determine its crystallinity index (58,4 %). (author)

  18. [Occurrence of Mansonella ozzardi (Nematoda, Onchocercidae) in riverine communities of the Purus river, Boca do Acre municipality, Amazonas State, Brazil].

    Science.gov (United States)

    Medeiros, Jansen Fernandes; Py-Daniel, Victor; Barbosa, Ulysses Carvalho; Ogawa, Guilherme Maerschner

    2009-06-01

    The study aimed to estimate the prevalence of Mansonella ozzardi and calculate the parasitic infection rate in simuliid blackflies. The research was conducted in communities on the Purus River, Boca do Acre municipality, Amazonas State, Brazil. Prevalence was measured using the thick smear method. Captured blackflies were dissected to verify the parasitic infection rate. M. ozzardi prevalence was 27.30% (77/282). The study showed higher prevalence in men (31.97%) than women (22.22%), farmers (48.99%), and individuals in the 38-47 (60.00%), 48-57 (66.66%), and 58-67-year age brackets (75.00%). Microfilaremia was higher in individuals 58 to 67 years of age (average= 58.41 mf/40 microl), men (41.44 mf/40 microl), and farmers (49.94 mf/40 microl). Only the simuliid Cerqueirellum amazonicum was found infected with a parasitic infection rate of 0.98%.

  19. Production and characterization of chitosan obtained from shrimp exoskeleton; Producao e caracterizacao de quitosana obtida a partir do exoesqueleto do camarao

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Leticia P.; Aguiar, Nayara V.; Rodrigues, Willias da L.; Silva, Rafael S. da; Moreira, Carly K.P., E-mail: leticiaalmeida_26@hotmail.com [Universidade do Estado do Amapa (UEAP), Macapa, AP (Brazil)

    2015-07-01

    Chitosan is a natural polymer, biocompatible, biodegradable and non-toxic. It's derived from the deacetylation of chitin, which constitutes the most part of the exoskeleton of insects, crustaceans and fungal cell wall. After cellulose, chitin is more organic compound found in nature. The Chitin was separated from others components of shrimp waste (Macrobrachium amazonicum) by a chemical process that involves three steps: demineralization, deproteination and depigmentation. The chitosan produced was characterized by potentiometric titration, to find the degree of deacetylation (85,32 %), determining the intrinsic viscosity to define its molecular weight (503.223 g/mol), and X-ray diffraction to determine its crystallinity index (58,4 %). (author)

  20. [First record of simuliidae (Diptera) with pollinaria of asclepiadoideae (Apocynaceae) attached].

    Science.gov (United States)

    Medeiros, Jansen F; Rapini, Alessandro; Barbosa, Ulysses C; Py-Daniel, Victor; Braga, Pedro I S

    2008-01-01

    The presence of pollinaria of two species of Asclepiadoideae (Apocynaceae), possibly Tassadia cf. martiana Decne. and T. cf. obovata Decne., attached to the mouth parts of simulid black flies [Cerqueirellum amazonicum (Goeldi), C. argentiscutum (Shelley & Luna Dias), C. oyapockense (Floch & Abonnenc), and Cerqueirellum sp.] are reported for the first time. The frequency and distribution of simulids recorded with pollinaria suggest that removal of pollinaria by these flies is not casual. Simulids probably use nectar in flowers of Asclepiadoideae as source of sugar, being able to remove their pollinaria. This finding demonstrates that simulids are not only vector of pathogenic parasites, but also carry pollinaria, and thus may represent a group of pollinators for species of Asclepiadoideae with small flowers.

  1. Características limnológicas da coluna d'água e dos efluentes de viveiros de criação de camarões-da-amazônia Limnological characteristics of the water column and effluents of Amazon river prawn ponds

    Directory of Open Access Journals (Sweden)

    Gustavo Gonzaga Henry-Silva

    2010-10-01

    Full Text Available Os objetivos neste trabalho foram caracterizar os efluentes de viveiros de Macrobrachium amazonicum criados em diferentes densidades de cultivo e analisar a variação nictemeral (24 horas do perfil vertical da temperatura e da saturação de oxigênio da coluna d'água dos viveiros. O experimento foi realizado durante um período de três meses utilizando-se 12 viveiros retangulares de 100 m² povoados com camarões-da-amazônia em quatro densidades de cultivo (40, 60, 80 e 100 indivíduos/m², cada uma avaliada com três repetições. Mensalmente, foi realizado nos viveiros (superfície até o fundo o acompanhamento da variação nictemeral da temperatura e da saturação de oxigênio dissolvido. Nos efluentes gerados pela criação de camarões foram determinados os valores de N-total, N-amoniacal, N-nitrito, N-nitrato, P-total, P-ortofosfato e turbidez. Foram constatadas estratificações e desestratificações diárias de temperatura e da saturação de oxigênio, independentemente da densidade de cultivo, caracterizando os viveiros como um sistema de circulação polimítico. Quanto maior a densidade de cultivo de camarões-da-amazônia, maiores os valores de P-total, N-total, P-ortofostato, N-amoniacal e turbidez nos efluentes.The objective of this research was to characterize the effluents of fish ponds of Macrobrachium amazonicum cultured in different densities of farming and to analyze the daily variation (24 hours of the vertical temperature and oxygen saturation profile of the water column of the ponds. The study was conducted during a period of three months using 12 rectangular 100 m² earthen ponds supplied with M. amazonicum individuals in four densities of farming (40, 60, 80 and 100 individuals/m², each one evaluated with three replicates. Follow-up of the daily variation of the temperature and of the saturation of the dissolved oxygen was monthly carried out in the fish ponds (from the surface to the bottom. It was determined

  2. DENSIDADE DE ESTOCAGEM PARA PRODUÇÃO DE ACARÁ-BANDEIRA EM VIVEIROS ESCAVADOS EM POLICULTIVO COM CAMARÃO-DA-AMAZÔNIA

    Directory of Open Access Journals (Sweden)

    FELIPE DE AZEVEDO SILVA RIBEIRO

    2010-01-01

    Full Text Available The aim of this study was to evaluate the production of Freshwater Angelfish (Pterophyllum scalare in different stocking densities in cages polycultured with Amazon River Prawn (Macrobrachium amazonicum. Four treatments were evaluated (1; 2; 3 and 4 fish.10 L-1 using two ponds and 24 experimental units. Water quality parameter reached adequate levels for the species. Production data were submitted to ANOVA. Fish produced in the lowest density showed higher values of final weight and standard length, and lower total biomass in comparison with the others treatments. Feed conversion rate, survival, batch uniformity and body factor were not significant different among treatments. The highest density tested produced more fish and gross yield than the others treatments. The density 20 fish.10L-1 is recommended to produce Freshwater Angelfish in cages polycultured with Amazon River Prawn.

  3. .

    Directory of Open Access Journals (Sweden)

    Erlei Cassiano Keppeler

    2011-09-01

    Full Text Available Water transparency of Macrobrachium amazonicum ponds under different feeding regimens and selective harvests. In aquaculture systems, water transparency is affected by water supply, feeding rate and fertilization. A study was conducted from December 19, 2003 to May 12, 2004 for a period of approximately 120 days. Twelve 0.01ha earthen ponds were used with 1m deep water. Prawns were fed commercial diet at a rate of 7 to 9% of biomass until the 14th week. Then, three groups of three ponds were fed with 3%, 5% and 7% of prawn biomass. The remaining three other ponds were subjected to combined harvest. The amount of penetrating light was calculated according to Lambert’s Law, described as Iz = Ioe-kz. Evaluation of the data using Kruskall-Wallis, complemented by LSD test, showed a signifi cant difference between treatments of 3 and 5% (p 0.05.

  4. Biodiversity of decapod crustaceans in the estuarine floodplain around the city of Belém (Pará in Brazilian Amazonia

    Directory of Open Access Journals (Sweden)

    Danielle Viveiros Cavalcante

    2012-06-01

    Full Text Available The present study focused on the decapod fauna of the fluvial-estuarine environment of the Guajará Bay, in the Brazilian state of Pará, where specimens were collected monthly from six sites, from May 2006 to April 2007. A total of 6,793 specimens were captured, belonging to 11 species of crab and shrimp: eight palaemonids - Macrobrachium amazonicum (Heller, 1862, Macrobrachium surinamicum Holthuis, 1948, Macrobrachium carcinus (Linnaeus, 1758, Macrobrachium rosenbergii (De Man, 1879, Macrobrachium spp. 1-4 -, one portunid - Callinectes bocourti A. Milne-Edwards, 1879 -, and two trichodactylids - Sylviocarcinus devileii H. Milne-Edwards, 1853 and Sylviocarcinus pictus (Milne-Edwards, 1853. While no significant differences were found in the ecological indices of diversity with respect to season, site, or trap size, a tendency for increased abundance and species richness was found during the dry season (August-November, in particular at some sites, apparently reflecting the influence of the estuary's saline wedge.

  5. Decapod crustaceans in fresh waters of southeastern Bahia, Brazil.

    Science.gov (United States)

    de Almeida, Alexandre Oliveira; Coelho, Petrônio Alves; Luz, Joaldo Rocha; dos Santos, José Tiago Almeida; Ferraz, Neyva Ribeiro

    2008-09-01

    A total of 117 species of freshwater decapod crustaceans are known from Brazil. Knowledge regarding the fauna of Decapoda from inland waters in the state of Bahia, northeast Brazil, is incipient. In spite of its wide territory and rich hydrographic net, only 13 species of limnetic decapods have been reported from that state. The objective of this contribution was to survey decapod crustaceans of some hydrographic basins in southeastern Bahia. The material described herein was obtained in samplings conducted between 1997 and 2005. Voucher specimens were deposited in the carcinological collections of the Museu de Zoologia, Universidade Estadual de Santa Cruz, Ilhéus, Brazil, and Departamento de Oceanografia, Universidade Federal de Pernambuco, Recife, Brazil. A total of 13 species was collected. The carideans were represented by the atyids Atya scabra (Leach, 1815) and Potimirim potimirim (Müller, 1881) and the palaemonids Macrobrachium acanthurus (Wiegmann, 1836), M. amazonicum (Heller, 1862), M. carcinus (Linnaeus, 1758), M. heterochirus (Wiegmann, 1836), M. jelskii (Miers, 1877), M. olfersi (Wiegmann, 1836), and Palaemon (Palaemon) pandaliformis (Stimpson, 1871). The brachyurans were represented by the portunids Callinectes bocourti A. Milne-Edwards, 1879 and C. sapidus Rathbun, 1895, the trichodactylid Trichodactylus fluviatilis Latreille, 1828 and the panopeid Panopeus rugosus A. Milne-Edwards, 1881. Macrobrachium heterochirus represents a new record from Bahia, and M. amazonicum is reported for the first time in southeast Bahia. The occurrence of two extreme different forms of T. fluviatilis was observed. Form A is characterized by the frontal margin of carapace bordered by conspicuous granules, the anterolateral margin provided with developed teeth plus granules, and the posterolateral margin provided with granulation similar to that found on the front. In form B the frontal margin is smooth or has an inconspicuous granulation; the anterolateral margin is

  6. Gill (Na+,K+)-ATPase in diadromous, freshwater palaemonid shrimps: species-specific kinetic characteristics and alpha-subunit expression.

    Science.gov (United States)

    Santos, L C F; Belli, N M; Augusto, A; Masui, D C; Leone, F A; McNamara, J C; Furriel, R P M

    2007-09-01

    To better comprehend physiological adaptation to dilute media and the molecular mechanisms underlying ammonia excretion in palaemonid shrimps, we characterized the (Na+,K+)-ATPase from Macrobrachium amazonicum gills, disclosing high- (K(0.5) = 4.2+/-0.2 micromol L(-1); V = 33.9+/-1.9 U mg(-1)) and low-affinity (K(0.5) = 0.144+/-0.010 mmol L(-1); V = 232.9+/-15.3 U mg(-1)) ATP hydrolyzing sites. Stimulation by Na+ (K(0.5) = 5.5+/-0.3 mmol L(-1); V = 275.1+/-15.1 U mg(-1)), Mg2+ (K(0.5) = 0.79+/-0.06 mmol L(-1); V = 261.9+/-18.3 U mg(-1)), K+ (K(M) = 0.88+/-0.04 mmol L(-1); V = 271.8+/-10.9 U mg(-1)) and NH4(+) (K(M) = 5.0+/-0.2 mmol L(-1); V = 385.9+/-15.8 U mg(-1)) obeys single saturation curves, activity being stimulated synergistically by NH4(+) and K+. There is a single K+ binding site, NH4(+) binding to a second, exclusive site, stimulating activity by 33%, modulating K+ affinity. (Na+,K+)-ATPase activity constitutes approximately 80% of total ATPase activity (K(Iouabain) = 147.5+/-8.9 micromol L(-1)); Na+-, K+-, Ca2+-, V- and F(o)F(1)-ATPases are also present. M. amazonicum microsomal fractions possess approximately 2-fold less (Na+,K+)-ATPase alpha-subunit than M. olfersi, consistent with a 2.6-fold lower specific activity. These differences in (Na+, K+)-ATPase stimulation by ATP and ions, and specific activities of other ATPases, suggest the presence of distinct biochemical adaptations to life in fresh water in these related species.

  7. Characterization of storage cell wall polysaccharides from Brazilian legume seeds and the formation of aqueous two-phase systems.

    Science.gov (United States)

    Franco, T T; Rodrigues, N R; Serra, G E; Panegassi, V R; Buckeridge, M S

    1996-05-17

    Cell wall storage polysaccharides from Brazilian legume seeds of Dimorphandra mollis, Schizolobium parahybum (galactomannans), Copaifera langsdorffii, Hymenaea courbaril (xyloglucans) and the galactan from cotyledons of the Mediterranean species Lupinus angustifolius were extracted and their apparent molecular masses were determined by high-performance size exclusion chromatography analysis. They were, to a large degree, polydisperse, showing molecular masses that varied from 100,000 to 2,000,000. Polyethylene glycol (PEG, 1500, 4000, 6000 and 8000), sodium citrate and dextran (73,000, 60,000-90,000, 505,000 and 2,000,000) were used for investigating phase formation with the seed polysaccharides. Galactomannans and xyloglucans demonstrated phase formation with sodium citrate concentrations lower than 30%, as well as dextrans and polyethylene glycol, and formed gels in the presence of high concentrations of sodium citrate (above 30%). Galactan did not promote phase formation with any of the reagents used. On the basis of the results obtained, the possibility of using legume seed polysaccharides for the partitioning and purification of polysaccharide enzymes in aqueous two-phase systems is suggested.

  8. Initial growth of six forest tree species in differents spacing conditions

    Directory of Open Access Journals (Sweden)

    Daniel Ferreira do Nascimento

    2012-03-01

    Full Text Available This work veriflied the influence of planting spacing on the initial growth of six forest species, at the age of 22 months, in plantations of forest recomposition in the Guandu River Basin. The experiment was installed in the SFE - thermoelectric power plants Barbosa Lima Sobrinho, located in the City of Seropédica-RJ. Forty eight tree species were planted, using the spacings, 1.0 x 1.0, 1.5 x 1.5, 2.0 and 2.0 x 3.0 x 2.0 m, which are the study treatments. At 22 months after planting, it was evaluated the growth in height, diameter at ground level (DNS and area of the canopy for the species, Anadenanthera macrocarpa Benth. Brenan (angico vermelho, Schinus terebinthifolius Raddi (aroeira pimenteira, Schizolobium parahyba Blake (guapuruvu Chorisia speciosa St. Hill (paineira, Cordia sp. (babosa branca and Inga marginata (ingá. It was found that the studied species behaved in a different way in the differents spacing of planting, and that the planting density significantly influenced on the initial growth of all the species. In general, in wider planting spacings, the plants had higher growth.

  9. Produção de chapas de partículas de madeira de duas espécies nativas da Mata Atlântica e suas combinações.

    Directory of Open Access Journals (Sweden)

    Graziela Baptista Vidaurre

    2010-08-01

    Full Text Available O objetivo deste trabalho foi produzir chapas de partículas "Strand" e maravalhas partindo de Schizolobium parahyba e Erytrina verna e suas combinações. Os parâmetros de manufatura foram: densidade nominal de 0,65 g/cm³, temperatura de prensagem de 180ºC, tempo de prensagem de 14 minutos, resina fenol-formaldeído a 8% e umidade das partículas a 5%. Os melhores resultados para o ensaio de flexão estática foram encontrados quando se utilizou guapuruvu puro e/ou na capa, embora a maioria dos tratamentos tenha apresentado valores superiores aos estabelecidos pela norma canadense (CSA O437-0, 1993. Em relação à ligação interna, 50% dos tratamentos apresentaram valores superiores aos estabelecidos pela norma canadense. Os valores de absorção de água e inchamento em espessura foram considerados altos para todos os tratamentos, devendo-se considerar que não foi utilizado parafina para a confecção das chapas.

  10. PRODUÇÃO DE CHAPAS DE PARTÍCULAS DE MADEIRA DE DUAS ESPÉCIES NATIVAS DA MATA ATLÂNTICA E SUAS COMBINAÇÕES

    Directory of Open Access Journals (Sweden)

    Edvá Oliveira Brito

    2004-05-01

    Full Text Available O objetivo deste trabalho foi produzir chapas de partículas "Strand" e maravalhas partindo de Schizolobium parahyba e Erytrina verna e suas combinações. Os parâmetros de manufatura foram: densidade nominal de 0,65 g/cm³, temperatura de prensagem de 180ºC, tempo de prensagem de 14 minutos, resina fenol-formaldeído a 8% e umidade das partículas a 5%. Os melhores resultados para o ensaio de flexão estática foram encontrados quando se utilizou guapuruvu puro e/ou na capa, embora a maioria dos tratamentos tenha apresentado valores superiores aos estabelecidos pela norma canadense (CSA O437-0, 1993. Em relação à ligação interna, 50% dos tratamentos apresentaram valores superiores aos estabelecidos pela norma canadense. Os valores de absorção de água e inchamento em espessura foram considerados altos para todos os tratamentos, devendo-se considerar que não foi utilizado parafina para a confecção das chapas.

  11. Robust logistic regression to narrow down the winner's curse for rare and recessive susceptibility variants.

    Science.gov (United States)

    Kesselmeier, Miriam; Lorenzo Bermejo, Justo

    2017-11-01

    Logistic regression is the most common technique used for genetic case-control association studies. A disadvantage of standard maximum likelihood estimators of the genotype relative risk (GRR) is their strong dependence on outlier subjects, for example, patients diagnosed at unusually young age. Robust methods are available to constrain outlier influence, but they are scarcely used in genetic studies. This article provides a non-intimidating introduction to robust logistic regression, and investigates its benefits and limitations in genetic association studies. We applied the bounded Huber and extended the R package 'robustbase' with the re-descending Hampel functions to down-weight outlier influence. Computer simulations were carried out to assess the type I error rate, mean squared error (MSE) and statistical power according to major characteristics of the genetic study and investigated markers. Simulations were complemented with the analysis of real data. Both standard and robust estimation controlled type I error rates. Standard logistic regression showed the highest power but standard GRR estimates also showed the largest bias and MSE, in particular for associated rare and recessive variants. For illustration, a recessive variant with a true GRR=6.32 and a minor allele frequency=0.05 investigated in a 1000 case/1000 control study by standard logistic regression resulted in power=0.60 and MSE=16.5. The corresponding figures for Huber-based estimation were power=0.51 and MSE=0.53. Overall, Hampel- and Huber-based GRR estimates did not differ much. Robust logistic regression may represent a valuable alternative to standard maximum likelihood estimation when the focus lies on risk prediction rather than identification of susceptibility variants. © The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  12. Model and numerical analysis of mechanical phenomena of tools steel hardening

    Directory of Open Access Journals (Sweden)

    A. Bokota

    2010-01-01

    Full Text Available This paper the model hardening of tool steel takes into considerations of mechanical phenomena is presented. Fields stresses and strains are obtained from solutions by FEM equilibrium equations in rate form. The stresses generated during hardening were assumed to result from thermal load, structural deformation, and plastic deformation and transformation plasticity. Thermophysical values in the constitutive relations are depended upon both the temperature and the phase composition. Condition Huber-Misses with the isotropic strengthening for the creation of plastic strains is used. However model Leblond to determined transformations plasticity applied. The analysis of stresses associated of the elements hardening made of tool steel was done.

  13. Influence of donor-donor transport on excitation energy transfer in binary system C102-C6 doped in Poly (methylmethacrylate)

    Science.gov (United States)

    Singh, Khushboo; Joshi, G. C.; Gairola, R. P.

    2018-03-01

    Energy transfer and migration from Coumarin102 to Coumarin6 in Poly (methylmethacrylate) have been investigated using steady-state and time domain fluorescence spectroscopy. It is found that the influence of energy migration in energy transfer can be described quite convincingly on the basis of theories of Loring, Anderson and Fayer (LAF) and Huber. At higher acceptor concentrations direct donor-acceptor transfer occurs through Förster mechanism. It is suggested to use a mixture of these two dyes in the LSCs.

  14. Elsa Rodríguez Cidre. Cautivas troyanas. El mundo femenino fragmentado en las tragedias de Eurípides : Ediciones del Copista, Córdoba, 2010, 392 pp.

    OpenAIRE

    Zamperetti Martín, Deidamia Sofía

    2012-01-01

    Elsa Rodríguez Cidre, Doctora en Letras por la Universidad de Buenos Aires e investigadora del CONICET, es especialista en el discurso femenino en la tragedia griega, particularmente en la obra de Eurípides. El libro que aquí se presenta es la publicación de su tesis doctoral realizada bajo la dirección de Elena Huber y defendida en diciembre de 2007 en la Facultad de Filosofía y Letras de la UBA donde la autora se desempeña como Profesora Adjunta del Área de Griego.

  15. MineCrafting Friendship

    DEFF Research Database (Denmark)

    Skovbjerg, Helle Marie

    , Minecraft, sociability, friendship, ethnographic study. Heidegger, M. (1998). Being and Time: A Translation of Sein und Zeit. State University of New York Press. http://doi.org/10.1353/mln.1998.0037 Huber, H. (2006). Aristoteles: Nikomachische Ethik. Politeia, 356–361. http://doi.org/10.......1524/9783050050232 Karoff, H. S. (2013). Play practices and play moods, (September), 37–41. http://doi.org/10.1080/21594937.2013.805650 Prout, A., & James, A. (1997). A new paradigm for the sociology of childhood? Provenance, promise and problems. In Constructing and Reconstructing Childhood: Contemporary Issues...

  16. Handbook for sound engineers

    CERN Document Server

    Ballou, Glen

    2015-01-01

    Handbook for Sound Engineers is the most comprehensive reference available for audio engineers, and is a must read for all who work in audio.With contributions from many of the top professionals in the field, including Glen Ballou on interpretation systems, intercoms, assistive listening, and fundamentals and units of measurement, David Miles Huber on MIDI, Bill Whitlock on audio transformers and preamplifiers, Steve Dove on consoles, DAWs, and computers, Pat Brown on fundamentals, gain structures, and test and measurement, Ray Rayburn on virtual systems, digital interfacing, and preamplifiers

  17. Burn Enhances Toll-Like Receptor Induced Responses by Circulating Leukocytes

    Science.gov (United States)

    2012-04-30

    induced alterations in toll-like receptor- mediated responses by bronchoalveolar lavage cells. Cytokine 2011; 55: 396-401. [14] Huber NL, Bailey SR...Materials and methods Animals C57BL/6 male mice (18 to 22 gm; 8 to 10 wk, Charles River Laboratories, Wilmington, MA) Int J Clin Exp Med...responses by circulating leukocytes is unknown. To study this, C57BL/6 mice were subjected to burn (3rd degree, 25% TBSA) or sham procedure and 1-7 days

  18. On temporal correlations in high-resolution frequency counting

    OpenAIRE

    Dunker, Tim; Hauglin, Harald; Rønningen, Ole Petter

    2016-01-01

    We analyze noise properties of time series of frequency data from different counting modes of a Keysight 53230A frequency counter. We use a 10 MHz reference signal from a passive hydrogen maser connected via phase-stable Huber+Suhner Sucoflex 104 cables to the reference and input connectors of the counter. We find that the high resolution gap-free (CONT) frequency counting process imposes long-term correlations in the output data, resulting in a modified Allan deviation that is characteristic...

  19. Protein–protein interactions

    OpenAIRE

    Janin, J.; Bonvin, A.M.J.J.

    2013-01-01

    We are proud to present the first edition of the Protein–protein interactions Section of Current Opinion in Structural Biology. The Section is new, but the topic has been present in the journal from the very start. Volume 1, Issue 1, dated February 1991, had a review by Janin entitled Protein–protein interactions and assembly, and others by Bode and Huber on Proteinase–inhibitor interaction, and by Chothia on Antigen recognition. The Editorial Overview, signed by TE Creighton and PS Kim, note...

  20. High-temperature properties of mineral wool

    DEFF Research Database (Denmark)

    Augustesen, Maria; Ståhl, Kenny

    Thermal stability and thereby fire safety is an essential property of fibrous insulating materials for buildings. At the same time the viscosity is an important manufacturing property that may impair the thermal stability. This project aims at investigating the thermal stability of some mineral...... behaviour. Figure 1. Isothermal X-ray powder diffraction patterns collected at beamline 711, MAXLAB, Lund, using a Huber G670 Guinier camera. The sample was contained in a 0.5 mm quartz capillary, data were accumulated for 5 min per pattern at T = 1100 K and lambda = 1.2724 Å. Preliminary results show...

  1. L'Algérie de Le Corbusier: les voyages de 1931

    OpenAIRE

    Gerber, Alex; Gubler, Jacques

    2007-01-01

    "Some day, the traffic of ideas between North Africa and Le Corbusier should form the subject of a separate study". Quote from "Le Corbusier - Elemente einer Synthese" by Stanislaus von Moos. Frauenfeld. Verlag Huber, 1968. Chapter 1 The motivations behind a young man's overwhelming desire to visit the Orient are presented. In Le Corbusier's case, it was the idea of the "Grand Tour" which at that time was a normal way of completing one's education, and this long journey brought him to a funda...

  2. Projection Pursuit Through ϕ-Divergence Minimisation

    Directory of Open Access Journals (Sweden)

    Jacques Touboul

    2010-06-01

    Full Text Available In his 1985 article (“Projection pursuit”, Huber demonstrates the interest of his method to estimate a density from a data set in a simple given case. He considers the factorization of density through a Gaussian component and some residual density. Huber’s work is based on maximizing Kullback–Leibler divergence. Our proposal leads to a new algorithm. Furthermore, we will also consider the case when the density to be factorized is estimated from an i.i.d. sample. We will then propose a test for the factorization of the estimated density. Applications include a new test of fit pertaining to the elliptical copulas.

  3. Atomic Physics at Accelerators Laser Spectroscopy and Applications

    CERN Document Server

    Letokhov, V

    2003-01-01

    From 19 to 24 September, 1999, the First European Conference Atomic physics at Accelerators: Laser Spectroscopy and Applications (APAC'99) was held at University of Mainz and Schloss Waldhausen (Budenheim, Germany) under the chairmanship of H. Backe and G. Huber. The idea of this up-to-date conference was associated with the 65th anniversary of Professor Ernst Otten (University of Mainz) who, together with H. Kluge, contributed much to the development of this work at CERN, University of Mainz, and Darmstadt. (17 refs).

  4. QuaSI: Quantile Sparse Image Prior for Spatio-Temporal Denoising of Retinal OCT Data

    OpenAIRE

    Schirrmacher, Franziska; Köhler, Thomas; Husvogt, Lennart; Fujimoto, James G.; Hornegger, Joachim; Maier, Andreas K.

    2017-01-01

    Optical coherence tomography (OCT) enables high-resolution and non-invasive 3D imaging of the human retina but is inherently impaired by speckle noise. This paper introduces a spatio-temporal denoising algorithm for OCT data on a B-scan level using a novel quantile sparse image (QuaSI) prior. To remove speckle noise while preserving image structures of diagnostic relevance, we implement our QuaSI prior via median filter regularization coupled with a Huber data fidelity model in a variational ...

  5. Mechanisms of KAI1/CD82-Induced Prostate Cancer Metastasis

    Science.gov (United States)

    2011-08-01

    5. Knudsen BS, Gmyrek GA, Inra J , Scherr DS, Vaughan ED, Nanus DM, Kattan MW, Gerald WL, and Vande Woude GF. 2002. High expression of the Met...N.E. Huber, E. Schnabl, T. Baumruker, Eur. J . Immunol. 21 (2) (1991) 377. [13] K.I. Virtaneva, P . Angelisova, T. Baumruker, V. Horejsi, H...Nevanlinna, J . Schroder, Immunogenetics 37 (6) (1993) 461. [14] M.L. Gil, N. Vita, S. Lebel-Binay, B. Miloux, P . Chalon, M. Kaghad, C. Marchiol- Fournigault, H

  6. New records of fruit flies (Diptera: Tephritidae), wild hosts and parasitoids (Hymenoptera: Braconidae) in the Brazilian Amazon

    Energy Technology Data Exchange (ETDEWEB)

    Jesus, Cristiane R. de; Oliveira, Manoela N. de; Silva, Ricardo A. da [EMBRAPA Amapa, Macapa, AP (Brazil); Pereira, Julia D.B. [Universidade Federal do Amapa, Macapa, AP (Brazil); Souza Filho, Miguel F. [Instituto Biologico, Campinas, SP (Brazil); Costa Neto, Salustiano V. da [Instituto de Pesquisas Cientificas e Tecnologicas do Amapa, Macapa, AP (Brazil); Marinho, Claudia F.; Zucchi, Roberto A. [Escola Superior de Agricultura Luiz de Queiroz (ESALQ/USP), Piracicaba, SP (Brazil). Dept. de Entomologia, Fitopatologia e Zoologia Agricola

    2008-11-15

    Anastrepha anomala Stone was obtained from Parahancornia amapa (Huber) Ducke (Apocynaceae) fruits, and Anastrepha hastata Stone from Cheiloclinium cognatum (Miers.) (Hippocrateaceae) in the State of Amapa, Brazil. Two braconids, Doryctobracon sp. and Opius bellus Gahan, were reared from the latter fruit fl y species. This is the fi rst record of P. amapa as a fruit fl y host. C. cognatum is the fi rst host known to A. hastata. Both braconids are also the fi rst records of parasitoids for this species. (author)

  7. Write-up for the Diffractometer D1 at Risø

    DEFF Research Database (Denmark)

    Bundgaard, Jørgen; Krebs Larsen, F.; Lebech, Bente

    Manual for the crystallographic program system used to control the 4-circle neutron diffractometer D1/TASII at DR3, Risø. The mechanical part of the diffractometer consists of a monochromator part which allows an easy change of incident neutron wavelength and a four-circle HUBER goniostate...... terminal. The diffractometer can be operated remotely via modem and telephone line connections from remote stations such as the University of Århus and ILL, Grenoble. Minor parts of the software used to control the diffractometer were developed at Risø while the major parts were a generous gift to Risø...

  8. Bar optimal design with the use of out-form

    OpenAIRE

    Alpatov Vadim Yu.; Sakharov Andrei A.; Veremeenko Oleg Yu.; Lukin Alexey A.

    2016-01-01

    The paper describes steel girders optimal design. Steel girders optimal design is based on the strength theory introduced by M. Huber, R. Mises, H. Hencky and on the theory of mirror functions. With the help of out-form volume we can either calculate the optimal form for a girder with variable cross-section or the optimal height for a girder of uniform cross-section. The paper introduces girders calculations according to the authors' methodology. For use this methodology effect of steel savin...

  9. Development of a System for Survey of Radon Concentration of the Dayton Area Using a Liquid Scintillation Counter and Analysis of the Data

    Science.gov (United States)

    1992-03-01

    45305 1.1 / 0.7 7.43 Miamisburg/ Bellbrook 45432 & 45431 2.6 / 2.4 8.58 Beavercreek/Riverside Table 8. Comparison of First Survey and Bouchard’s...6.5 4.84 Miamisburg/ Bellbrook 45432 & 45431 1.7 / 2.3 5.78 Beavercreek/Riverside 45424 & 45469 3.2 / 2.2 4.18 Huber Heights I I Bouchard plotted the...Survey Two’s Number (Regions) Results of (pCi/I) Samples 45432, 45459, & 45305 3.4 / 2.7 8 Miamisburg/ Bellbrook 45440 & 45429 4.3 / 3.1 8 Kettering 45430

  10. Personalized Cancer Care Conference

    OpenAIRE

    Zänker, Kurt S.; Mihich, Enrico; Huber, Hans-Peter; Borresen-Dale, Anne-Lise

    2013-01-01

    The Oslo University Hospital (Norway), the K.G. Jebsen Centre for Breast Cancer Research (Norway), The Radiumhospital Foundation (Norway) and the Fritz-Bender-Foundation (Germany) designed under the conference chairmen (E. Mihich, K.S. Zänker, A.L. Borresen-Dale) and advisory committee (A. Borg, Z. Szallasi, O. Kallioniemi, H.P. Huber) a program at the cutting edge of “PERSONALIZED CANCER CARE: Risk prediction, early diagnosis, progression and therapy resistance.” The conference was held in O...

  11. Genuine Tripartite Entanglement in a Spin-Star Network at Thermal Equilibrium

    OpenAIRE

    Militello, B.; Messina, A.

    2010-01-01

    In a recent paper [M. Huber {\\it et al}, Phys. Rev. Lett. {\\bf 104}, 210501 (2010)] new criteria to find out the presence of multipartite entanglement have been given. We exploit these tools in order to study thermal entanglement in a spin-star network made of three peripheral spins interacting with a central one. Genuine tripartite entanglement is found in a wide range of the relevant parameters. A comparison between predictions based on the new criteria and on the tripartite negativity is a...

  12. Genuine tripartite entanglement in a spin-star network at thermal equilibrium

    Science.gov (United States)

    Militello, B.; Messina, A.

    2011-04-01

    In a recent paper [M. Huber , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.104.210501 104, 210501 (2010)], new criteria to determine the presence of multipartite entanglement were given. We exploit these tools to study thermal entanglement in a spin-star network made of three peripheral spins interacting with a central one. Genuine tripartite entanglement is found in a wide range of the relevant parameters. A comparison between predictions based on the new criteria and those based on the tripartite negativity is also made.

  13. Data Analysis What Can Be Learned From the Past 50 Years

    CERN Document Server

    Huber, Peter J

    2011-01-01

    This book explores the many provocative questions concerning the fundamentals of data analysis. It is based on the time-tested experience of one of the gurus of the subject matter. Why should one study data analysis? How should it be taught? What techniques work best, and for whom? How valid are the results? How much data should be tested? Which machine languages should be used, if used at all? Emphasis on apprenticeship (through hands-on case studies) and anecdotes (through real-life applications) are the tools that Peter J. Huber uses in this volume. Concern with specific statistical techniq

  14. Discussion relating to the film "The Gospel according to St.Matthew"

    CERN Document Server

    Christinger; Huber; Defelice; Crapon

    1968-01-01

    Plusieurs orateurs, le Sociologue à l'Université de Genève Christinger, le Révérend Père Cottier, le Pasteur Huber de l'Hôpital Cantonale de Genève, le député de la partie de travail Mons.Defelice et le traducteur Mons.Crapon parlent du film de Pasolini très discuté et se posent la question: pourquoi Pasolini a fait ce film? (but social, politique etc...)

  15. Open Symposium : ESA-CERN Workshop on Fundamental Physics in Space and Related Topics, CERN, Geneva, 7 Apr 2000

    CERN Multimedia

    2000-01-01

    Part 1 : Chairman R.M. Bonnet : Addresses by the Directors-General of CERN and ESA - Summary of the Cosmology session by L. Woltjer - Summary of the Gravitation I session by G. Schaefer - Summary of the Astroparticle Physics I session by V. Berezinsky - Summary of the Astroparticle Physics II session by A. De RújulaPart 2 : Chairman M. Jacob : Summary of the Instrumentation I session by M. Spiro - Summary of the Instrumentation II session by G.M. Viertel - Summary of the Gravitation II session by M. Huber - Testing General Relativity by N. Straumann

  16. Degenerate four-wave mixing and polarization spectroscopy in NO2

    Science.gov (United States)

    De Dominicis, Luigi; Fantoni, Roberta; Giorgi, Mariano

    2002-05-01

    Degenerate Four Wave Mixing (DFWM) and polarization spectroscopy (PS) have been used to detect traces of nitric dioxide in a static cell at room temperature and in a small flame from a laboratory Bunsen burner. The high resolution spectrum of the Douglas-Huber band has been recorded with both techniques. The role played by population and thermal gratings in the DFWM case has been investigated under various experimental conditions. PS measurements performed with 'orientation' and 'alignment' configurations allowed to resolve NO2 composite spectral features.

  17. Atividade antiproliferativa e antineoplásica de flavonóides da espécie Brosimum acutifolium em modelo de glioblastoma in vitro

    OpenAIRE

    MAUÉS, Luis Antônio Loureiro

    2013-01-01

    Dentre os tumores que acometem o sistema nervoso, o glioblastoma multiforme (GBM), destaca-se por seu alto grau de agressividade e baixo prognóstico, apresentando em média uma sobrevida de 15 meses a partir do diagnóstico. O presente estudo objetivou investigar a atividade antiproliferativa e antineoplásica de quatro flavonoides isolados da espécie Brosimum acutifolium (Huber), duas flavanas: 4’-hidroxi-7,8-(2”,2”-dimetilpirano) flavana (BAS-1) e 7,4’-dihidroxi-8,(3,3-dimetilalil)-flavana, (B...

  18. Mururins A-C, three new lignoids from Brosimum acutifolium and their protein kinase inhibitory activity.

    Science.gov (United States)

    Takashima, Junko; Asano, Shoichi; Ohsaki, Ayumi

    2002-07-01

    Two new flavonolignans, mururins A and B ( 1 and 2), and a new lignan, mururin C ( 3), were isolated from the bark of Brosimum acutifolium Huber together with three known lignans. Their structures were elucidated by spectroscopic means and chemical modifications. They were tested for protein kinase A (PKA) and protein kinase C (PKC) inhibitory activity. Mururin A showed 3 % and 63 % inhibition to PKA and PKC, respectively, at 20 microM. Mururin B showed 58 % and 38 % inhibition, respectively. Mururin C did not have significant activity.

  19. Brosimacutins J-M, four new flavonoids from Brosimum acutifolium and their cytotoxic activity.

    Science.gov (United States)

    Takashima, Junko; Komiyama, Kanki; Ishiyama, Haruaki; Kobayashi, Jun'ichi; Ohsaki, Ayumi

    2005-07-01

    Four new flavonoids, brosimacutins J-M (1 - 4), were isolated from the bark of Brosimum acutifolium Huber together with a known flavan, brosimine A (5). The structures of compounds 1-4 were elucidated by spectroscopic means. 27 constituents of this plant including compounds 1-5 were evaluated for their cytotoxic activity against murine leukemia P388 cells. Although no compounds tested had any reversal effect on vincristine resistance, brocimacutins J-M (1-4) were cytotoxic to vincristine-resistant P388 cells (IC50 4.4 - 19 microg/mL).

  20. Then Came the Fire: Personal Accounts From the Pentagon, 11 September 2001

    Science.gov (United States)

    2011-01-01

    cosmetic surgery of some kind to correct some of the facial scarring and my ears. And then on my neck I have what looks like a hanging scar. And I...probably have a few other surgeries between now and that cosmetic surgery to correct some orthopedic problems and some things, what’s called adhesion of...blinds to protrude from the wall horizontally. John Huber (a celebrated and well- liked civil servant and sixty-year-old Pittsburgh native) then saw the

  1. Revision of the enigmatic Southeast Asian spider genus Savarna (Araneae, Pholcidae

    Directory of Open Access Journals (Sweden)

    Bernhard A. Huber

    2015-12-01

    Full Text Available The genus Savarna Huber, 2005 was previously one of the most poorly known Pholcinae genera. Less than 20 specimens (representing four nominal species were available worldwide; nothing was known about ultrastructure, natural history, or relationships. We present the first SEM data, supporting the position of the genus in Pholcinae outside the Pholcus group of genera and weakly suggesting a closer relationship with the genera Khorata Huber, 2005, Spermophorides Wunderlich, 1992, and two undescribed species of unknown affinity from Borneo. We provide the first data about microhabitat, web structure, and reaction to disturbance. We clarify the type locality of Savarna tessellata (Simon, 1901 (“Jalor, Biserat” and describe topotypical material. We describe the previously unknown male of Spermophora miser Bristowe, 1952 and transfer the species (that was previously considered incertae sedis to Savarna as Savarna miser (Bristowe, 1952 comb. nov. Savarna baso (Roewer, 1963 is newly synonymized with S. miser. We newly describe the most northern species in the genus, Savarna kaeo sp. nov., and provide amendments to the descriptions of all previously described species.

  2. The pollen of metaphor: Box, cage, and trap as containment in the eighteenth century.

    Science.gov (United States)

    Milne, Anne

    2016-06-01

    This article uses the concept of "the pollen of metaphor" to discuss three forms of non-human animal containment in the eighteenth century: François Huber's Leaf or Book Hive bee box first described in his Nouvelles Observations sur les Abeilles (1792, English translation 1806), Sarah Trimmer's bird cages in her didactic children's book, Fabulous Histories; Or, The Story of the Robins (1786), and a mouse trap in Anna Letitia Barbauld's 1773 poem, "The Mouse's Petition, found in the trap where he had been confined all night by Dr. Priestley, for the sake of making experiments with different kinds of air." All three works highlight the eighteenth-century art of observation. The inherent commitment to relationships in the observation process suggests that interpreting ocular evidence involves "plausible relations," metaphor and/or "productive analogy." The article teases out subtle differences between the ways that each author uses containments and concludes that while Huber seeks to circumscribe non-human animal behavior within the bounds of 'reasonable' animal husbandry to better serve human needs, Trimmer goes further to connect 'appropriate' non-human animal containment to moral strictures governing humans. Barbauld's intervention using a literate, speaking animal subject confronts such moral governance to argue for equal rights based on principles of true equality rather than what is observed to be 'reasonable' and/or 'moral.' Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. TopoToolbox: Using Sensor Topography to Calculate Psychologically Meaningful Measures from Event-Related EEG/MEG

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    Xing Tian

    2011-01-01

    Full Text Available The open-source toolbox “TopoToolbox” is a suite of functions that use sensor topography to calculate psychologically meaningful measures (similarity, magnitude, and timing from multisensor event-related EEG and MEG data. Using a GUI and data visualization, TopoToolbox can be used to calculate and test the topographic similarity between different conditions (Tian and Huber, 2008. This topographic similarity indicates whether different conditions involve a different distribution of underlying neural sources. Furthermore, this similarity calculation can be applied at different time points to discover when a response pattern emerges (Tian and Poeppel, 2010. Because the topographic patterns are obtained separately for each individual, these patterns are used to produce reliable measures of response magnitude that can be compared across individuals using conventional statistics (Davelaar et al. Submitted and Huber et al., 2008. TopoToolbox can be freely downloaded. It runs under MATLAB (The MathWorks, Inc. and supports user-defined data structure as well as standard EEG/MEG data import using EEGLAB (Delorme and Makeig, 2004.

  4. How Continental Bank outsourced its "crown jewels.".

    Science.gov (United States)

    Huber, R L

    1993-01-01

    No industry relies more on information than banking does, yet Continental, one of America's largest banks, outsources its information technology. Why? Because that's the best way to service the customers that form the core of the bank's business, says vice chairman Dick Huber. In the late 1970s and early 1980s, Continental participated heavily with Penn Square Bank in energy investments. When falling energy prices burst Penn Square's bubble in 1982, Continental was stuck with more than $1 billion in bad loans. Eight years later when Dick Huber came on board, Continental was working hard to restore its once solid reputation. Executives had made many tough decisions already, altering the bank's focus from retail to business banking and laying off thousands of employees. Yet management still needed to cut costs and improve services to stay afloat. Regulators, investors, and analysts were watching every step. Continental executives, eager to focus on the bank's core mission of serving business customers, decided to outsource one after another in-house service--from cafeteria services to information technology. While conventional wisdom holds that banks must retain complete internal control of IT, Continental bucked this argument when it entered into a ten-year, multimillion-dollar contract with Integrated Systems Solutions Corporation. Continental is already reaping benefits from outsourcing IT. Most important, Continental staffers today focus on their true core competencies: intimate knowledge of customers' needs and relationships with customers.

  5. Postoperative Respiratory Exercises Reduce the Risk of Developing Pulmonary Complications in Patients Undergoing Lobectomy.

    Science.gov (United States)

    Rodriguez-Larrad, Ana; Vellosillo-Ortega, Juan Manuel; Ruiz-Muneta, Carlos; Abecia-Inchaurregui, Luis Carlos; Seco, Jesús

    2016-07-01

    To evaluate the effects of an intensive postoperative physiotherapy program focused on respiratory exercises in patients undergoing lobectomy by open thoracotomy. Quasi-experimental study. Tertiary referral academic hospital. 208 patients undergoing lobectomy by open thoracotomy. Control group patients (n=102) received standard medical/nursing care, and experimental group patients (n=106) added to the standard clinical pathway a daily physiotherapy program focused on respiratory exercises until discharge. Analyzed outcomes were the frequency of postoperative pulmonary complications (PPCs) more amenable to physiotherapy (pneumonia, atelectasis and respiratory insufficiency) and length of hospital stay (LOS). Both groups were comparable regarding preoperative and surgical characteristics. Incidence of PPCs was 20.6% in control and 6.6% in experimental group (P=.003). Median (IQR) LOS in control group was 14 (7) days (Huber M estimator 14.21) and 12 (6) days (Huber M estimator 12.81) in experimental. Logistic regression model identified the evaluated physiotherapy program (P=.017; EXP [B] 95% CI 0.081-0.780) and % FEV1 (P=.042; EXP [B] 95% CI 0.941-0.999) as protective factors for the development of PPCs in patients undergoing lobectomy. Implementing a postoperative intensive physiotherapy program focused on respiratory exercises reduces the risk of PPCs and resultant LOS on patients undergoing lobectomy. Copyright © 2016 SEPAR. Published by Elsevier Espana. All rights reserved.

  6. Iterative image reconstruction for cerebral perfusion CT using a pre-contrast scan induced edge-preserving prior

    Science.gov (United States)

    Ma, Jianhua; Zhang, Hua; Gao, Yang; Huang, Jing; Liang, Zhengrong; Feng, Qianjing; Chen, Wufan

    2012-11-01

    Cerebral perfusion x-ray computed tomography (PCT) imaging, which detects and characterizes the ischemic penumbra, and assesses blood-brain barrier permeability with acute stroke or chronic cerebrovascular diseases, has been developed extensively over the past decades. However, due to its sequential scan protocol, the associated radiation dose has raised significant concerns to patients. Therefore, in this study we developed an iterative image reconstruction algorithm based on the maximum a posterior (MAP) principle to yield a clinically acceptable cerebral PCT image with lower milliampere-seconds (mA s). To preserve the edges of the reconstructed image, an edge-preserving prior was designed using a normal-dose pre-contrast unenhanced scan. For simplicity, the present algorithm was termed as ‘MAP-ndiNLM’. Evaluations with the digital phantom and the simulated low-dose clinical brain PCT datasets clearly demonstrate that the MAP-ndiNLM method can achieve more significant gains than the existing FBP and MAP-Huber algorithms with better image noise reduction, low-contrast object detection and resolution preservation. More importantly, the MAP-ndiNLM method can yield more accurate kinetic enhanced details and diagnostic hemodynamic parameter maps than the MAP-Huber method.

  7. Algorithm and program for precise determination of unit-cell parameters of single crystal taking into account the sample eccentricity

    Science.gov (United States)

    Dudka, A. P.; Smirnova, E. S.; Verin, I. A.; Bolotina, N. B.

    2017-07-01

    A technique has been developed to refine the unit-cell parameters of single crystals with minimization of the influence of instrumental errors on the result. The corresponding computational procedure HuberUB is added to the software package of Huber-5042 diffractometer with a point detector and closedcycle helium cryostat Displex DE-202. The parameters of unit cell, its orientation, the goniometer zero angles, the sample eccentricity, the distances in the goniometer, and the radiation wavelength were refined by the nonlinear least-squares method, which allows imposition of constraints on the unit-cell parameters, depending on the crystal symmetry. The technique is approved on a LuB12 single crystal. The unit-cell parameters are determined in a temperature range of 20-295 K, with an absolute error not larger than 0.0004 Å (the relative error is of 5 × 10-5). The estimates of the unit-cell parameters obtained by the proposed method are evidenced to be unbiased. Some specific features of the behavior of parameters in the ranges of 120-140 and 20-50 K are revealed, which correlate with the anomalies of the physical properties of the crystal.

  8. Registro de novos hospedeiros de Megaplatypus mutatus (Chapuis (Coleoptera, Platypodidae no Estado de São Paulo, Brasil (Nota Científica. A register of new hosts of Megaplatypus mutatus (Chapuis (Coleoptera, Platypodidae in the State of São Paulo (Scientific Note.

    Directory of Open Access Journals (Sweden)

    Thiago Borges CONFORTI

    2008-12-01

    Full Text Available Megaplatypus mutatus (Chapuis éespécie nativa da América do Sul e é pragaprimária de espécies arbóreas exóticas e nativas.No município de Campinas, Estado de São Paulo,durante pesquisa realizada nos anos de 2004,2005 e 2006, visando descobrir a causa damortalidade de árvores que compõem o dossel defragmentos de Floresta Estacional Semidecidual noBosque dos Jequitibás e na Mata Santa Genebra,foi coletado material associado a várias espéciesarbóreas ainda não registradas na literatura.Schizolobium parahyba (Vel l . S. F. Bl ake,Enterolobium contortisiliquum (Vell. Morong,Livistona chinensis (Jacq. R. Br., Caesalpiniapluviosa (Benth. DC., Pittosporum undulatumVent., Delonix regia (Bojer ex Hook Raf.,Mangifera indica L., Croton floribundus Spreng.,Croton piptocalyx Müll. Arg., Cariniana legalis(Mart. Kuntze, Luetzelburgia guaissaraToledo, Piptadenia gonoacantha (Mart. J. F.Macbr., Ficus benjamina L., Platypodium elegansVogel, Cariniana estrellensis (Raddi Kuntze,Machaerium stipitatum (DC. Vogel, Centrolobiumtomentosum Guillemin ex Benth., Pachira aquaticaAubl., Inga cf. vera Willd. ssp. affinis (DC. T.D.Penn., são registradas pela primeira vez comohospedeiros de M. mutatus no stado de São Paulo,Brasil. Plantas hospedeiras referidas em bibliografiatambém são relacionadas.Megaplatypus mutatus (Chapuis isnative from South America and it is a primary pestof native and exotic trees. In the county ofCampinas, state of São Paulo, during researchcarried out in the years of 2004, 2005 and 2006aiming at to discover the cause of the mortality oftrees that compose the canopy of fragments ofSemideciduous Forest in the Bosque dos Jequitibásand Mata Santa Genebra, was collected materialassociated with some species still not recorded inthe literature. Schizolobium parahyba (Vel l . S.F. Bl ake, Enterolobium contortisiliquum (Vell.Morong, Livistona chinensis (Jacq. R. Br.,Caesalpinia pluviosa (Benth. DC., Pittosporumundulatum Vent., Delonix

  9. Composição centesimal e perfil de ácidos graxos do camarão-d'água-doce Centesimal composition and fatty acids profile of freshwater prawn

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    Wilson Massamitu Furuya

    2006-08-01

    Full Text Available Este estudo foi realizado para determinação da composição centesimal e do perfil de ácidos graxos do camarão-d'água-doce Macrobrachium amazonicum visando à análise de seu potencial nutritivo. Seis lotes (100 g cada um de camarões inteiros e com massas individuais de 0,9 a 1,2 g foram triturados, armazenados e, posteriormente, analisados quanto aos teores de umidade, cinzas, PB e lipídios totais (70,3; 1,5; 24,8 e 1,5%, respectivamente. Foram detectadas 36 variedades de ácidos graxos, sendo o mais freqüente o ácido palmítico-16:0 (18,2%. Entre os da série ômega-3, os mais encontrados foram o eicosapentaenóico-20:5n-3, di-homo-alfa-linolênico-20:3n-3, docosahexaenóico-22:6n-3 e alfa-linolênico-18:3n-3 (frequências de 13,9; 9,5; 6,8 e 4,2%, respectivamente. As freqüências de somatórias de ácidos graxos foram de 36,9% para os ômega-3 e de 46,8% para os poliinsaturados. As razões entre os ácidos graxos ômega-6/ômega-3 (n-6/n-3 e os ácidos graxos poliinsaturados/ácidos graxos saturados (AGPI/AGS foram de 0,3 e 1,6, respectivamente. Todos os parâmetros observados indicaram bom potencial nutritivo para a carne do camarão-d'água-doce.The aim of this work was to determine the centesimal composition and fatty acids profile of freshwater prawn (Macrobrachium amazonicum for determination of its nutrient potential. Six lots (each one with 100 g containing whole prawns with individual mass ranging from 0.9 to 1.2 g were triturated and stored for posterior chemical analysis. The average values for moisture, ash, CP and total lipids were as follows: 70.3, 1.5, 24.8, and 1.5%, respectively. It was detected 36 varieties of fatty acids, and the most abundant was the palmitic -16:0 acid with 18.2%. The major omega-3 fatty acids were: eicosapentaenoic-20:5n-3, dihomo-alpha-linolenic-20:3n-3, docosahexaenoic-22:6n-3 and alpha-linolenic-18:3n-3 with frequencies of 13.9, 9.5, 6.8, and 4.2%, respectively. The total frequencies of fatty

  10. Ocorrência da Mansonella ozzardi (Nematoda, Onchocercidae em comunidades ribeirinhas do rio Purus, Município de Boca do Acre, Amazonas, Brasil Occurrence of Mansonella ozzardi (Nematoda, Onchocercidae in riverine communities of the Purus river, Boca do Acre municipality, Amazonas State, Brazil

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    Jansen Fernandes Medeiros

    2009-06-01

    Full Text Available Este estudo teve o objetivo de estimar as prevalências de Mansonella ozzardi e calcular taxa de infecção parasitária nos simulídeos. O trabalho foi realizado em comunidades ribeirinhas do rio Purus, Boca do Acre, Amazonas, Brasil. As prevalências foram obtidas por meio do método de gota espessa de sangue obtido por porção digital. Os simulídeos coletados foram dissecados para estimar a taxa de infecção parasitária. A prevalência de M. ozzardi foi de 27,3% (282/77. Foram observadas maiores prevalências nos homens (31,97% que nas mulheres (22,22%, nos agricultores (48% e nos indivíduos entre: 38-47 (60%, 48-57 (66,66% e 58-67 (75%. A microfilaremia foi maior nos indivíduos entre 58-67 anos (média = 58,41mf/40µL, sexo masculino (41,44mf/40µL e nos agricultores (49,94mf/40µL. Somente o simulídeo Cerqueirellum amazonicum foi encontrado infectado com taxa de infecção parasitária de 0,98%.The study aimed to estimate the prevalence of Mansonella ozzardi and calculate the parasitic infection rate in simuliid blackflies. The research was conducted in communities on the Purus River, Boca do Acre municipality, Amazonas State, Brazil. Prevalence was measured using the thick smear method. Captured blackflies were dissected to verify the parasitic infection rate. M. ozzardi prevalence was 27.30% (77/282. The study showed higher prevalence in men (31.97% than women (22.22%, farmers (48.99%, and individuals in the 38-47 (60.00%, 48-57 (66.66%, and 58-67-year age brackets (75.00%. Microfilaremia was higher in individuals 58 to 67 years of age (average= 58.41mf/40µl, men (41.44mf/40µl, and farmers (49.94mf/40µl. Only the simuliid Cerqueirellum amazonicum was found infected with a parasitic infection rate of 0.98%.

  11. [Heterochromia complicata Fuchs].

    Science.gov (United States)

    Hollwich, F

    1988-02-01

    We are indebted to I. Loewenfeld and her ophthalmologist colleague H. S. Thompson for having called for an explanation of the clinical picture of Fuchs's heterochromic cyclitis in their "Critical Review." In the present author's view, the reason why so many different opinions are held concerning the clinical picture and the etiology is that only a few authors (Franceschetti, François, Georgiades, Hollwich, Huber, Kimura, Hogan and Thygeson, Perkins, Sugar and others) have been able to follow up collectives of their own, of up to 50 patients and more, for many years. None of the investigators deny the presence of typical precipitates, observed both under direct light and retroillumination; typical because they are only found in Fuchs's heterochromia and its variation Posner-Schlossman syndrome. The course is inflammation-free, since, in contrast to all other forms of diseases of the anterior uvea, neither external signs of inflammation nor posterior synechiae occur. Etiologically, according to the behavior of the pupil (François 1949, 1954), there is sympathicoparalysis, while according to Amsler and Huber as well as Verrey, Franceschetti and Herrmann there is a corresponding pathologically increased fluorescein permeability of the vessels in the anterior segment and an extreme tendency to bleeding, as shown by the filiform bleeding when the anterior chamber is opened. The sympathicoparalysis also explains the inflammation-free vascular fragility, with escape of cell elements, primarily protein (albumins) and lymphocytes (Verrey, Matteucci, Franceschetti and Hermann, and François) into the aqueous and vitreous. Therefore, the syndrome should no longer be termed "heterochromic cyclitis" but rather "heterochromia complicata" as proposed by E. Fuchs. In view of the somatic features, amounting to a status dysraphicus, the condition is probably connected with a congenital developmental anomaly of the sympathetic nerve (François); these features have been described by

  12. Mansonella ozzardi in Brazil: prevalence of infection in riverine communities in the Purus region, in the state of Amazonas.

    Science.gov (United States)

    Medeiros, Jansen Fernandes; Py-Daniel, Victor; Barbosa, Ulysses Carvalho; Izzo, Thiago Junqueira

    2009-02-01

    This study was undertaken to investigate the prevalence of Mansonella ozzardi infection and to estimate the parasitic infection rate (PIR) in simuliid black flies in the municipality of Pauini, Amazonas, Brazil. We used thick blood films to examine 921 individuals in 35 riverine communities along the Pauini and Purus Rivers. Simuliids were caught in several communities. Flies were identified, stained with haematoxylin and dissected. Overall, 44 (24.86%) of 177 riverines were infected in communities on the Pauini River and 183 (24.19%) of 744 on the Purus. The prevalence was higher in men (31.81% and 29.82%) than in women (17.98% and 19.18%) and occurred in most age groups. The prevalence increased sharply in the 28-37 (50% and 42.68%) age group and increased in the older age classes. The highest prevalence was in farmers (44% and 52.17%, respectively) in the Pauini and Purus Rivers. Only Cerqueirellum amazonicum (Simuliidae) transmits M. ozzardi in this municipality, and we found a PIR of 0-8.43% and infectivity rate of 0-3.61%. These results confirm that rates of M. ozzardi infection are high in Pauini and suggest that its prevalence may be far greater than has been previously reported due to the absence of a program for treating the population.

  13. Mansonella ozzardi in Brazil: prevalence of infection in riverine communities in the Purus region, in the state of Amazonas

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    Jansen Fernandes Medeiros

    2009-02-01

    Full Text Available This study was undertaken to investigate the prevalence of Mansonella ozzardi infection and to estimate the parasitic infection rate (PIR in simuliid black flies in the municipality of Pauini, Amazonas, Brazil. We used thick blood films to examine 921 individuals in 35 riverine communities along the Pauini and Purus Rivers. Simuliids were caught in several communities. Flies were identified, stained with haematoxylin and dissected. Overall, 44 (24.86% of 177 riverines were infected in communities on the Pauini River and 183 (24.19% of 744 on the Purus. The prevalence was higher in men (31.81% and 29.82% than in women (17.98% and 19.18% and occurred in most age groups. The prevalence increased sharply in the 28-37 (50% and 42.68% age group and increased in the older age classes. The highest prevalence was in farmers (44% and 52.17%, respectively in the Pauini and Purus Rivers. Only Cerqueirellum amazonicum (Simuliidae transmits M. ozzardi in this municipality, and we found a PIR of 0-8.43% and infectivity rate of 0-3.61%. These results confirm that rates of M. ozzardi infection are high in Pauini and suggest that its prevalence may be far greater than has been previously reported due to the absence of a program for treating the population.

  14. First record of Annonaceae wood for the Neogene of South America, Amazon Basin, Brazil

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    Emilio Alberto Amaral Soares

    Full Text Available ABSTRACT: The relief of the regions of Manaus and Itacoatiara, Central Amazon, is supported by Neogene siliciclastic rocks, bounded at the base and top by lateritic paleosols and covered by quaternary sedimentary deposits from the Solimões-Amazon river system. This unit is informally assigned to the Novo Remanso Formation, consists of usually reddish and ferruginized sandstones, conglomerates and pelites, with few identified fossil records, a fact that has hindered its stratigraphic position, and the paleoenvironmental reconstruction of the last phase of the Amazon Basin settling. This study describes, for the first time, the occurrence of fossil wood in outcroppings of the left bank of the Amazon River, where anatomical and morphological data has enabled its characterization to the species level. Thus, the data marks the record of the Annonaceae in South America, as well as the depositional processes related to incorporation of organic material in the sandy layer and the fossilization processes that allowed its preservation. In an unprecedented way, this study has described Duguetiaxylon amazonicum nov. gen and sp. and provided information on the anatomical and systematic character, as well as data on plant-insect interaction, and a better understanding of the family.

  15. Prevalence of Mansonella ozzardi among riverine communities in the municipality of Lábrea, State of Amazonas, Brazil

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    Jansen Fernandes Medeiros

    2011-04-01

    Full Text Available INTRODUCTION: Estimate the prevalence of Mansonella ozzardi infection and calculate the parasitic infection rate (PIR in simuliid black flies in the municipality of Lábrea, State of Amazonas, Brazil. METHODS: Prevalence was measured using the thick blood smear method collected from the fingers and was related to age, sex and occupation. Simuliidae were collected with a suction apparatus, then stained with hematoxylin and dissected to verify the PIR. RESULTS: The average prevalence rate of M. ozzardi among the 694 individuals examined was 20.7%. Infection was higher in men (27.6% than in women (14.3% (p 58 (60.5%. The highest prevalence rates were observed in the retired (64%, followed by farm workers (47.1%. Infection by M. ozzardi was only identified in Cerqueirellum amazonicum (Simuliidae with a PIR of 0.6%. CONCLUSIONS: This study showed a high prevalence of M. ozzardi in the riverine communities of Lábrea due to the lack of policies regarding the treatment of microfilaremic individuals in the region and an abundance of competent vectors for M. ozzardi.

  16. Abundance and spatial-temporal distribution of Macrobrachium surinamicum Holthuis, 1948 (Palaemonidae) in the Amazon estuary, north of Brazil.

    Science.gov (United States)

    Cavalcante, D V; Bentes, B S; Martinelli-Lemos, J M

    2017-01-01

    Macrobrachium surinamicum is a small shrimp that inhabits rivers of low salinity. It is mainly caught as bycatch in Amazon shrimp Macrobrachium amazonicum fisheries, which is widely exploited by artisanal fisheries for food and economic needs of the riverside population. This study aimed to characterize the spatial and temporal distribution of the freshwater shrimp M. surinamicum in the Guajará Bay and on Mosqueiro Island, correlating the abundance of this species with abiotic factors (temperature and salinity). Samples were taken from May 2006 to April 2007 in six locations: Mosqueiro Island (Furo das Marinhas and Porto do Pelé); Icoaraci district; Arapiranga Island, edge of the city of Belém; and Combu Island, using traps named 'matapis'. A total of 361 shrimps were caught. The abundance was higher in December and lower in July 2006. The biggest catch occurred on Arapiranga Island and the lowest on Mosqueiro Island. The abundance differed significantly in December 2006 and no variable studied had significant influence on M. surinamicum abundance. In Guajará Bay, particularly the more sheltered places, as Arapiranga and Combu islands, favor the development of M. surinamicum, indicating that this species has preference for less disturbed areas.

  17. Redescription of the freshwater shrimp Macrobrachium jelskii (Miers, 1877) (Caridea, Palaemonidae).

    Science.gov (United States)

    Vera-Silva, Ana Luiza; Carvalho, Fabrício Lopes; Mantelatto, Fernando Luis

    2017-05-19

    Macrobrachium jelskii is a freshwater shrimp endemic to South America, occurring in all major Brazilian basins. It is used in various activities, such as fishing, fishkeeping and even as food for humans and animals, and therefore its distribution is affected by anthropic influence. Misidentification of M. jelskii is recurrent because of its morphological similarity to some sympatric species such as M. amazonicum and M. acanthurus. Thus, the aim of this study is to redescribe M. jelskii, proposing some characteristics that allow for a clearer differentiation of this species when compared to other similar congeneric species that occur in South America. The informative characters were the size and the shape of the rostrum, the ratio of the carpus and chela, the ratio of the chela and carapace length and the shape of the carpus of the second pereiopod, as well as the ratio between the length of the internal pair of posterior spine of telson and median apex of the posterior margin of telson. Although the intraspecific variability is high, the combination of the characters mentioned herein, including a morphological key, is very useful and makes it easier to differentiate between these three species.

  18. Los langostinos del género Macrobrachium con importancia económica y pesquera en América Latina: conocimiento actual, rol ecológico y conservación

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    Marcelo U García-Guerrero

    2013-09-01

    Full Text Available Los langostinos del género Macrobrachium con interés económico y pesquero son bien conocidos y explotados en casi todas las comunidades ribereñas de Latinoamérica. Sin embargo no han sido estudiados apropiadamente, y su conservación está en riesgo. Las características económicas, sociales y culturales, de la mayoría de los países de la región, que se traducen en el deterioro del hábitat y la sobreexplotación pesquera, ponen en peligro de desaparición las poblaciones de este género de macroinvertebrados acuáticos. De esto, se desprende que todas estas especies están escasamente estudiadas y el estado actual de sus poblaciones no es conocido, si bien en el caso de M. amazonicum hay numerosos estudios. Las técnicas de cultivo es el rubro en que más investigación se ha realizado. En este trabajo se resume el conocimiento que se tiene sobre las especies nativas de Macrobrachium en Latinoamérica y se discute su importancia económica y necesidades de conservación.

  19. Shrimp fishing wonen: gender, mobilization and sustainability on the Trambioca island, Barcarena, Pará

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    Ligia Terezinha Lopes Simonian

    2006-08-01

    Full Text Available Through this paper the relations between gender, social mobilizations and sustainability in the context of the Trambioca Island - Barcarena, Para, Brazil -, specially regarding the shrimp (Macrobrachium amazonicum fisherwomen. The research was oriented by the anthropological methodology of fieldwork and by the photographic production, but strategies were incorporated in a way to allow data production to do an analysis towards the political economy. Fundamentally, it revealed an experience in which fisherwomen end being the highlight in the shrimp production in this Island, who participate in the entire process of production, of transformation of the raw material and of commercialization. In spite of the globalized environmental and economic crisis, such fisherwomen are proposing the raising of shrimp, through which they intend to raise the income. However, in such an organizational process, they perceive that the limits are many and that they need training and technology linked to the raising of shrimp and financing. Consequently, the implications to sustainability appear as many, in special if a possibility of a differentiated economy is to be taken into consideration.

  20. Genetic variability and phylogenetic aspects in species of the genus Macrobrachium.

    Science.gov (United States)

    Guerra, A L; Lima, A V B; Lucato Júnior, R V; Chiachio, M C; Taddei, F G; Castiglioni, L

    2014-05-09

    The genus Macrobrachium includes prawns, which are widely distributed in lakes, floodplains, and rivers in tropical and subtropical regions of South America. This genus presents nearly 210 known species with great ecological and economic importance. However, few studies are related to the biology of these crustaceans. In this study, we analyzed the genetic variability and phylogenetic relationship between Macrobrachium amazonicum and Macrobrachium jelskii, which are closely related species. Additionally, they are syntopics and their taxonomy poses problems because it is difficult to differentiate between the species. We used the mitochondrial gene sequences COI and 16S rRNA to assess the genetic structure of these species in 3 populations that were collected from Tiete hydrographic basin (São Paulo State, Brazil). The interspecific comparison of samples that were collected at the same and different locations showed a low rate of genetic variability. This similarity was attributed to the recent introduction of these species in the regions that were sampled and the habitat conditions in which they inhabit. In addition, these results may be consistent with the hypothesis that they are a single species, interspecific hybrids, or metapopulation. The dendrogram analyses did not reveal the formation of clusters, confirming the disturbances in the genetic structure of the samples that were analyzed in this study. These data are pioneers to these crustaceans, and they confirm the ecological and evolutionary problems between these Macrobrachium species.

  1. Abundance and spatial-temporal distribution of Macrobrachium surinamicum Holthuis, 1948 (Palaemonidae in the Amazon estuary, north of Brazil

    Directory of Open Access Journals (Sweden)

    D. V. Cavalcante

    Full Text Available Abstract Macrobrachium surinamicum is a small shrimp that inhabits rivers of low salinity. It is mainly caught as bycatch in Amazon shrimp Macrobrachium amazonicum fisheries, which is widely exploited by artisanal fisheries for food and economic needs of the riverside population. This study aimed to characterize the spatial and temporal distribution of the freshwater shrimp M. surinamicum in the Guajará Bay and on Mosqueiro Island, correlating the abundance of this species with abiotic factors (temperature and salinity. Samples were taken from May 2006 to April 2007 in six locations: Mosqueiro Island (Furo das Marinhas and Porto do Pelé; Icoaraci district; Arapiranga Island, edge of the city of Belém; and Combu Island, using traps named 'matapis'. A total of 361 shrimps were caught. The abundance was higher in December and lower in July 2006. The biggest catch occurred on Arapiranga Island and the lowest on Mosqueiro Island. The abundance differed significantly in December 2006 and no variable studied had significant influence on M. surinamicum abundance. In Guajará Bay, particularly the more sheltered places, as Arapiranga and Combu islands, favor the development of M. surinamicum, indicating that this species has preference for less disturbed areas.

  2. Decapod crustaceans in fresh waters of southeastern Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Alexandre Oliveira de Almeida

    2008-09-01

    Full Text Available A total of 117 species of freshwater decapod crustaceans are known from Brazil. Knowledge regarding the fauna of Decapoda from inland waters in the state of Bahia, northeast Brazil, is incipient. In spite of its wide territory and rich hydrographic net, only 13 species of limnetic decapods have been reported from that state. The objective of this contribution was to survey decapod crustaceans of some hydrographic basins in southeastern Bahia. The material described herein was obtained in samplings conducted between 1997 and 2005. voucher specimens were deposited in the carcinological collections of the Museu de Zoologia, Universidade Estadual de Santa Cruz, Ilhéus, Brazil, and Departamento de Oceanografia, Universidade Federal de Pernambuco, Recife, Brazil. A total of 13 species was collected. The carideans were represented by the atyids Atya scabra (Leach, 1815 and Potimirim potimirim (Müller, 1881 and the palaemonids Macrobrachium acanthurus (Wiegmann, 1836, M. amazonicum (Heller, 1862, M. carcinus (Linnaeus, 1758, M. heterochirus (Wiegmann, 1836, M. jelskii (Miers, 1877, M. olfersi (Wiegmann, 1836, and Palaemon (Palaemon pandaliformis (Stimpson, 1871. The brachyurans were represented by the portunids Callinectes bocourti A. Milne-Edwards, 1879 and C. sapidus Rathbun, 1895, the trichodactylid Trichodactylus fluviatilis Latreille, 1828 and the panopeid Panopeus rugosus A. Milne-Edwards, 1881. Macrobrachium heterochirus represents a new record from Bahia, and M. amazonicum is reported for the first time in southeast Bahia. The occurrence of two extreme different forms of T. fluviatilis was observed. Form A is characterized by the frontal margin of carapace bordered by conspicuous granules, the anterolateral margin provided with developed teeth plus granules, and the posterolateral margin provided with granulation similar to that found on the front. In form B the frontal margin is smooth or has an inconspicuous granulation; the anterolateral

  3. Convex Optimization in R

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    Roger Koenker

    2014-09-01

    Full Text Available Convex optimization now plays an essential role in many facets of statistics. We briefly survey some recent developments and describe some implementations of these methods in R . Applications of linear and quadratic programming are introduced including quantile regression, the Huber M-estimator and various penalized regression methods. Applications to additively separable convex problems subject to linear equality and inequality constraints such as nonparametric density estimation and maximum likelihood estimation of general nonparametric mixture models are described, as are several cone programming problems. We focus throughout primarily on implementations in the R environment that rely on solution methods linked to R, like MOSEK by the package Rmosek. Code is provided in R to illustrate several of these problems. Other applications are available in the R package REBayes, dealing with empirical Bayes estimation of nonparametric mixture models.

  4. [Basic symptoms in schizophrenia, their clinical study and relevance in research].

    Science.gov (United States)

    Miret, Salvador; Fatjó-Vilas, Mar; Peralta, Víctor; Fañanás, Lourdes

    2016-01-01

    Basic symptoms consist of subtle sub-clinical disturbances subjectively experienced by schizophrenia patients. These are mainly related to drive, affect, thinking and language, perception, memory, motor action, central vegetative functions, control of cognitive processes, and stress tolerance. Initially described by Huber, from a phenomenological approach, basic symptoms are part of the earliest features of schizophrenia, and they can evolve along the course of the disorder. Their assessment during the prodromal phase of the disease (together with ultra-high risk criteria) is one of the 2 main approaches that allow the definition of states of clinical risk for the development of psychosis. The present review provides an updated view of the concept of basic symptoms, highlighting its potential value in establishing neurobiological correlates of interest in aetiopathogenic research. Copyright © 2015 SEP y SEPB. Published by Elsevier España. All rights reserved.

  5. Numerical analysis of stress fields generated by quenching process

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    A. Bokota

    2011-04-01

    Full Text Available In work the presented numerical models of tool steel hardening processes take into account mechanical phenomena generated by thermalphenomena and phase transformations. In the model of mechanical phenomena, apart from thermal, plastic and structural strain, alsotransformations plasticity was taken into account. The stress and strain fields are obtained using the solution of the Finite Elements Method of the equilibrium equation in rate form. The thermophysical constants occurring in constitutive relation depend on temperature and phase composite. For determination of plastic strain the Huber-Misses condition with isotropic strengthening was applied whereas fordetermination of transformation plasticity a modified Leblond model was used. In order to evaluate the quality and usefulness of thepresented models a numerical analysis of stresses and strains associated hardening process of a fang lathe of cone shaped made of tool steel was carried out.

  6. Infimal Convolution Regularisation Functionals of BV and Lp Spaces

    KAUST Repository

    Burger, Martin

    2016-02-03

    We study a general class of infimal convolution type regularisation functionals suitable for applications in image processing. These functionals incorporate a combination of the total variation seminorm and Lp norms. A unified well-posedness analysis is presented and a detailed study of the one-dimensional model is performed, by computing exact solutions for the corresponding denoising problem and the case p=2. Furthermore, the dependency of the regularisation properties of this infimal convolution approach to the choice of p is studied. It turns out that in the case p=2 this regulariser is equivalent to the Huber-type variant of total variation regularisation. We provide numerical examples for image decomposition as well as for image denoising. We show that our model is capable of eliminating the staircasing effect, a well-known disadvantage of total variation regularisation. Moreover as p increases we obtain almost piecewise affine reconstructions, leading also to a better preservation of hat-like structures.

  7. Statistical model for OCT image denoising

    KAUST Repository

    Li, Muxingzi

    2017-08-01

    Optical coherence tomography (OCT) is a non-invasive technique with a large array of applications in clinical imaging and biological tissue visualization. However, the presence of speckle noise affects the analysis of OCT images and their diagnostic utility. In this article, we introduce a new OCT denoising algorithm. The proposed method is founded on a numerical optimization framework based on maximum-a-posteriori estimate of the noise-free OCT image. It combines a novel speckle noise model, derived from local statistics of empirical spectral domain OCT (SD-OCT) data, with a Huber variant of total variation regularization for edge preservation. The proposed approach exhibits satisfying results in terms of speckle noise reduction as well as edge preservation, at reduced computational cost.

  8. Bar optimal design with the use of out-form

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    Alpatov Vadim Yu.

    2016-01-01

    Full Text Available The paper describes steel girders optimal design. Steel girders optimal design is based on the strength theory introduced by M. Huber, R. Mises, H. Hencky and on the theory of mirror functions. With the help of out-form volume we can either calculate the optimal form for a girder with variable cross-section or the optimal height for a girder of uniform cross-section. The paper introduces girders calculations according to the authors' methodology. For use this methodology effect of steel saving is about 10-20% compared with a girder or a beam with uniform cross-section. An example of determining optimal shape of a compressed-bend girder the paper describes.

  9. Self-secularisation as challenge to the church

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    Jaco Beyers

    2015-11-01

    Full Text Available The concept of self-secularisation has been identified by Wolfgang Huber, bishop of the German Evangelische Kirche in Deutschland (EKD, when he reflected on the context of the church in Germany. Self-secularisation however, is a worldwide phenomenon with effects in South Africa as well. After discussing the origin of the concept and its interpretations, the author tries to identify instances of self-secularisation within especially the Afrikaansspeaking churches, although not limited to them, in South Africa. The theological jargon comes under scrutiny, civil religion, the pluralistic society within which the church exists, the effect of emotionalism, the commercialisation of the church, the role of mass media and the phenomenon of infotainment, rationalisation and a lack of ethics are some of the elements identified and discussed. Finally the author attempts a correction by indicating what the church ought to do in order to counter the effects of self-secularisation.

  10. Students’ perceptions of the Master in Secondary Teacher Education: Strengths and weaknesses of the new training model

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    M.ª José HERNÁNDEZ AMORÓS

    2013-01-01

    Full Text Available This paper is the result of a research process developed to know which the students’ perceptions about the program of Secondary Teachers Training are, during the academic course 2011/2012, when it has already been developed for three years. For that, we have reached some information from 227 students who have completed an anonymous open questionnaire. It has been used an evaluative methodology which is typical of qualitative paradigm. The information has been analyzed by AQUAD 6 software program (Huber, 2006, which has allowed the classification of the different codes in nine categories that help us to organize the information and reach some conclusions. These dimensions are: assessment time and teachers, teachers’ development through training, training difficulties, benefits of training, concept of education, interest in teaching, expectations of professional development, basic principles of educational work and suggestions for improvement. Results, therefore, are useful for doing several reformulations in curriculum and for enhance strengths of curriculum, identified by the students.

  11. Revolutionsroman? Revolutionairy novel?

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    Anita Runge

    2002-11-01

    Full Text Available An sieben einschlägigen Textbeispielen analysiert Mechthilde Vahsen die literarischen Reaktionen deutschsprachiger Schriftstellerinnen auf die Französische Revolution. Das Spektrum reicht von Therese Hubers Roman Die Familie Seldorf, in dem eine weibliche Heldin als Akteurin ins Revolutionsgeschehen eingreift, bis zu Sophie La Roches Schilderungen tugendhaft-moralischer Kleinstgesellschaften in der deutschen Provinz oder im amerikanischen Exil, in denen als Reaktion auf die Revolution konservative Reformmodelle durchgespielt werden.Drawing on seven pertinent literary examples, Vahsen analyses the literary responses of German-speaking women writers to the French Revolution. Ranging from Therese Huber’s novel, Die Familie Seldorf, in which a female protagonist becomes actively involved in the Revolution, to Sophie La Roche’s descriptions of virtuous-moral small-scale societies in German provinces or in exile in the US, Vahsen shows different settings in which conservative models of reform are being played out in response to the French Revolution.

  12. Prospects of a Christian ethics of responsibility (Part 2: an assessment of three German versions

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    DE de Villiers

    2007-09-01

    Full Text Available In the article three versions of a Christian ethics of responsibility, developed by three German theologians, Wolfgang Huber , Johannes Fischer and Ulrich K�rtner , in response to the philosopher Hans Jonas� s introduction of the ethics of responsibility as a completely new and much needed ethical approach in the technological age, are analysed and assessed. The purpose is to assess the prospects of a Christian ethics of responsibility.� An analysis shows the disparate nature of the three versions, but also reveals a number of ways in which responsibility can and should fundamentally qualify contemporary Christian ethics. The conclusion is therefore that the prospects of a Christian ethics� are much more promising than a superficial comparison of the three disparate versions of such an ethics would suggest.

  13. Robust model identification applied to type 1diabetes

    DEFF Research Database (Denmark)

    Finan, Daniel Aaron; Jørgensen, John Bagterp; Poulsen, Niels Kjølstad

    2010-01-01

    In many realistic applications, process noise is known to be neither white nor normally distributed. When identifying models in these cases, it may be more effective to minimize a different penalty function than the standard sum of squared errors (as in a least-squares identification method......). This paper investigates model identification based on two different penalty functions: the 1-norm of the prediction errors and a Huber-type penalty function. For data characteristic of some realistic applications, model identification based on these latter two penalty functions is shown to result in more...... accurate estimates of parameters than the standard least-squares solution, and more accurate model predictions for test data. The identification techniques are demonstrated on a simple toy problem as well as a physiological model of type 1 diabetes....

  14. Effects of latex from "Amapazeiro"Parahancornia amapa (Apocynaceae) on blowfly Chrysomya megacephala (Diptera: Calliphoridae) post-embryonic development.

    Science.gov (United States)

    Mendonça, Paloma M; Lima, Mariana G; Albuquerque, Luis R M; Carvalho, Mario G; Queiroz, Margareth M C

    2011-06-10

    Nowadays, insect control is usually carried out using chemical insecticides, but insect resistance and other negative side effects have prompted the search for alternatives. Biopesticides provide a positive alternative to synthetic pesticides because they have low impact on the environmental, low toxicity to humans and low costs among other advantages. This research was carried out to evaluate the activity of Parahancornia amapa (Huber) Ducke (Apocynaceae) lyophilized latex on the post embryonic development of Chrysomya megacephala (F.) (Diptera: Calliphoridae). Larvae treated with 1.0% latex showed a shorter post embryonic development period (larval, pupal and newly hatched larvae to adult); whereas larvae treated with 3.0% latex provoked a prolongation of these periods. Viability (53%) was also very low at the newly hatched larvae to adult period for larvae treated with 3.0% latex, indicating that latex from P. amapa at high concentrations could change C. megacephala post embryonic development. Copyright © 2011 Elsevier B.V. All rights reserved.

  15. Teologické základy lidských práv

    Directory of Open Access Journals (Sweden)

    Konrad Hilpert

    2014-04-01

    Full Text Available The paper focuses on the question of the importance of the theological justification of human rights. Firstly, it reflects in which way the philosophical and theological rationale of human rights is present in the current discourse on human rights and in the most important documents on human rights. Secondly, the author reflects on theological rationalisation of human rights as present in Church documents, starting with the encyclical Pacem in Terris, and the models of theological justification of human rights in contemporary German theology (Huber/Tödt, Saberschinsky, Sander is presented. Thirdly, the basic theological-anthropological rationale of human rights is formulated. In the conclusion, the paper notices a tension among theological rationalisation on human rights and the reality of cultural and religion plurality.

  16. Clinical leadership development and education for nurses: prospects and opportunities

    Directory of Open Access Journals (Sweden)

    Joseph ML

    2015-07-01

    Full Text Available M Lindell Joseph, Diane L Huber College of Nursing, The University of Iowa, Iowa City, IA, USA Abstract: With the implementation of the Affordable Care Act, elevated roles for nurses of care coordinator, clinical nurse leader, and advanced practice registered nurse have come to the forefront. Because change occurs so fast, matching development and education to job requirements is a challenging forecasting endeavor. The purpose of this article is to envision clinical leadership development and education opportunities for three emerging roles. The adoption of a common framework for intentional leadership development is proposed for clinical leadership development across the continuum of care. Solutions of innovation and interdependency are framed as core concepts that serve as an opportunity to better inform clinical leadership development and education. Additionally, strategies are proposed to advance knowledge, skills, and abilities for crucial implementation of improvements and new solutions at the point of care. Keywords: clinical leadership, nursing leadership, CNL, care coordination, innovation, interdependency

  17. The Numerical Analysis of the Phenomena of Superficial Hardening of the Hot-Work Tool Steel Elements / Analiza Numeryczna Zjawisk Przypowierzchniowego Hartowania Elementów Ze Stali Narzędziowej Do Pracy Na Gorąco

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    Bokota A.

    2015-12-01

    Full Text Available In the paper the complex model of hardening of the hot-work tool steel is presented. Model of estimation of phase fractions and their kinetics is based on the continuous heating diagram (CHT and cooling diagram (CCT. Phase fractions which occur during the continuous heating and cooling (austenite, pearlite or bainite are described by Johnson-Mehl (JM formula. To determine of the formed martensite the modified Koistinen-Marburger (KM equation is used. Model takes into account the thermal, structural, plastic strains and transformation plasticity. To calculate the plastic strains the Huber-Mises plasticity condition with isotopic hardening is used. Whereas to determine transformations induced plasticity the Leblond model is applied. The numerical analysis of phase compositions and residual stresses in the hot-work steel (W360 element is considered.

  18. Refinement of macromolecular structures against neutron data withSHELXL2013.

    Science.gov (United States)

    Gruene, Tim; Hahn, Hinrich W; Luebben, Anna V; Meilleur, Flora; Sheldrick, George M

    2014-02-01

    Some of the improvements in SHELX2013 make SHELXL convenient to use for refinement of macromolecular structures against neutron data without the support of X-ray data. The new NEUT instruction adjusts the behaviour of the SFAC instruction as well as the default bond lengths of the AFIX instructions. This work presents a protocol on how to use SHELXL for refinement of protein structures against neutron data. It includes restraints extending the Engh & Huber [ Acta Cryst. (1991), A 47 , 392-400] restraints to H atoms and discusses several of the features of SHELXL that make the program particularly useful for the investigation of H atoms with neutron diffraction. SHELXL2013 is already adequate for the refinement of small molecules against neutron data, but there is still room for improvement, like the introduction of chain IDs for the refinement of macromolecular structures.

  19. Numerical predicting of the structure and stresses state in hardened element made of tool steel

    Directory of Open Access Journals (Sweden)

    A. Bokota

    2008-03-01

    Full Text Available The paper presents numerical model of thcrmal phcnomcna, phasc transformation and mcchanical phcnomcna associated with hardeningof carbon tool steel. Model for evaluation or fractions OF phases and their kinetics bascd on continuous heating diagram (CHT andcontinuous cooling diagram (CCT. The stresses generated during hardening were assumed to rcsult from ~hermal load. stntcturaI plasticdeformations and transformation plasricity. Thc hardened material was assumed to be elastic-plastic, and in ordcr to mark plastic strains the non-isothermal plastic law of flow with the isotropic hardening and condition plasticity of Huber-Misses were used. TherrnophysicaI values of mechanical phenomena dependent on bo~hth e phase composition and temperature. In the numerical example thc simulated estimation of the phasc Fraction and strcss distributions in the hardened axisimmetrical elemcnt was performed.

  20. Plasticity in vulnerability to cavitation of Pinus canariensis occurs only at the driest end of an aridity gradient

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    Rosana eLópez

    2016-06-01

    Full Text Available Water availability has been considered one of the crucial drivers of species distribution. However, the increasing of temperatures and more frequent water shortages could overcome the ability of long-lived species to cope with rapidly changing conditions. Growth and survival of natural populations adapted to a given site, transferred and tested in other environments as part of provenance trials, can be interpreted as a simulation of ambient changes at the original location. We compare the intraspecific variation and the relative contribution of plasticity to adaptation of key functional traits related to drought resistance: vulnerability to cavitation, efficiency of the xylem to conduct water and biomass allocation. We use six populations of Canary Island pine growing in three provenance trials (wet, dry and xeric. We found that the variability for hydraulic traits was largely due to phenotypic plasticity, whereas genetic variation was limited and almost restricted to hydraulic safety traits and survival. Trees responded to an increase in climate dryness by lowering growth, and increasing leaf-specific hydraulic conductivity by means of increasing the Huber value. Vulnerability to cavitation only showed a plastic response in the driest provenance trial located in the ecological limit of the species. This trait was more tightly correlated with annual precipitation, drought length and temperature oscillation at the origin of the populations than hydraulic efficiency or the Huber value. Vulnerability to cavitation was directly related to survival in the dry and the xeric provenance trials, illustrating its importance in determining drought resistance. In a new climatic scenario where more frequent and intense droughts are predicted, the magnitude of extreme events together with the fact that plasticity of cavitation resistance is only shown in the very dry limit of the species could hamper the capacity to adapt and buffer against environmental

  1. Electromagnetic fields, such as those from mobile phones, alter regional cerebral blood flow and sleep and waking EEG.

    Science.gov (United States)

    Huber, R; Treyer, V; Borbély, A A; Schuderer, J; Gottselig, J M; Landolt, H-P; Werth, E; Berthold, T; Kuster, N; Buck, A; Achermann, P

    2002-12-01

    Usage of mobile phones is rapidly increasing, but there is limited data on the possible effects of electromagnetic field (EMF) exposure on brain physiology. We investigated the effect of EMF vs. sham control exposure on waking regional cerebral blood flow (rCBF) and on waking and sleep electroencephalogram (EEG) in humans. In Experiment 1, positron emission tomography (PET) scans were taken after unilateral head exposure to 30-min pulse-modulated 900 MHz electromagnetic field (pm-EMF). In Experiment 2, night-time sleep was polysomnographically recorded after EMF exposure. Pulse-modulated EMF exposure increased relative rCBF in the dorsolateral prefrontal cortex ipsilateral to exposure. Also, pm-EMF exposure enhanced EEG power in the alpha frequency range prior to sleep onset and in the spindle frequency range during stage 2 sleep. Exposure to EMF without pulse modulation did not enhance power in the waking or sleep EEG. We previously observed EMF effects on the sleep EEG (A. A. Borbély, R. Huber, T. Graf, B. Fuchs, E. Gallmann and P. Achermann. Neurosci. Lett., 1999, 275: 207-210; R. Huber, T. Graf, K. A. Cote, L. Wittmann, E. Gallmann, D. Matter, J. Schuderer, N. Kuster, A. A. Borbély, and P. Achermann. Neuroreport, 2000, 11: 3321-3325), but the basis for these effects was unknown. The present results show for the first time that (1) pm-EMF alters waking rCBF and (2) pulse modulation of EMF is necessary to induce waking and sleep EEG changes. Pulse-modulated EMF exposure may provide a new, non-invasive method for modifying brain function for experimental, diagnostic and therapeutic purposes.

  2. Pure endmember extraction using robust kernel archetypoid analysis for hyperspectral imagery

    Science.gov (United States)

    Sun, Weiwei; Yang, Gang; Wu, Ke; Li, Weiyue; Zhang, Dianfa

    2017-09-01

    A robust kernel archetypoid analysis (RKADA) method is proposed to extract pure endmembers from hyperspectral imagery (HSI). The RKADA assumes that each pixel is a sparse linear mixture of all endmembers and each endmember corresponds to a real pixel in the image scene. First, it improves the re8gular archetypal analysis with a new binary sparse constraint, and the adoption of the kernel function constructs the principal convex hull in an infinite Hilbert space and enlarges the divergences between pairwise pixels. Second, the RKADA transfers the pure endmember extraction problem into an optimization problem by minimizing residual errors with the Huber loss function. The Huber loss function reduces the effects from big noises and outliers in the convergence procedure of RKADA and enhances the robustness of the optimization function. Third, the random kernel sinks for fast kernel matrix approximation and the two-stage algorithm for optimizing initial pure endmembers are utilized to improve its computational efficiency in realistic implementations of RKADA, respectively. The optimization equation of RKADA is solved by using the block coordinate descend scheme and the desired pure endmembers are finally obtained. Six state-of-the-art pure endmember extraction methods are employed to make comparisons with the RKADA on both synthetic and real Cuprite HSI datasets, including three geometrical algorithms vertex component analysis (VCA), alternative volume maximization (AVMAX) and orthogonal subspace projection (OSP), and three matrix factorization algorithms the preconditioning for successive projection algorithm (PreSPA), hierarchical clustering based on rank-two nonnegative matrix factorization (H2NMF) and self-dictionary multiple measurement vector (SDMMV). Experimental results show that the RKADA outperforms all the six methods in terms of spectral angle distance (SAD) and root-mean-square-error (RMSE). Moreover, the RKADA has short computational times in offline

  3. CRESCIMENTO E SOBREVIVÊNCIA DE ESPÉCIES ARBÓREAS EM DIFERENTES MODELOS DE PLANTIO NA RECUPERAÇÃO DE ÁREA DEGRADADA POR DISPOSIÇÃO DE RESÍDUOS SÓLIDOS URBANOS1

    Directory of Open Access Journals (Sweden)

    Luana Auxiliadora de Resende

    2015-02-01

    Full Text Available Objetivou-se, neste trabalho, avaliar o desenvolvimento silvicultural e a sobrevivência das espécies em diferentes modelos de plantio de mudas para recuperação da área do lixão de Inconfidentes – Sul de Minas Gerais/Brasil, a qual se encontra com deficiência de vegetação, o que proporciona impactos visual e ambiental, com o intuito de indicar diferentes espécies vegetais que possam ser ideais para serem utilizadas na requalificação dos lixões. O experimento foi instalado no delineamento estatístico inteiramente casualizado com quatro modelos de plantio envolvendo mudas de 11 espécies arbóreas nativas e da gramínea Chrysopogon zizanioides (M1- Leguminosas; M2- Leguminosas + Chrysopogon zizanioides; M3- nativas e M4- Eremanthus erytropappus e Nectandra lanceolata e três repetições. As parcelas de 3 x 5 m de cada tratamento foram compostas por 15 mudas arbóreas, sendo acrescidas em cada modelo de plantio M2 oito mudas da gramínea Vetiver (C. Zizanioides. Foram avaliados ao longo de 20 meses a altura das plantas, o diâmetro do caule ao nível do solo, a área de copa e a sobrevivência, em intervalos de 30 dias. Os dados do crescimento silvicultural e sobrevivência entre os tratamentos e entre as espécies foram submetidos à análise de variância e as médias, comparadas pelo teste de Scott Knott a 5% de probabilidade. A partir da análise dos resultados da recuperação da área do desativado Lixão de Inconfidentes – Sul de Minas Gerais/Brasil, conclui-se que o modelo de plantio M2 e as espécies Bauhinia forficata, Eritrina falcata, Senna multijuga, Schizolobium parahyba e Schinus terebinthifolius são as mais indicadas para recuperação da área.

  4. Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage.

    Science.gov (United States)

    Ribeiro de Souza, Sarah Caroline; Adrián López de Andrade, Sara; Anjos de Souza, Lucas; Schiavinato, Marlene Aparecida

    2012-11-15

    A greenhouse pot experiment was conducted to evaluate the potential of three Brazilian leguminous woody species, Mimosa caesalpiniaefolia, Erythrina speciosa and Schizolobium parahyba, for the revegetation of lead- (Pb-) contaminated areas. The response of seedlings to increasing Pb concentrations (0, 250, 500 and 1000 mg kg(-1)) in the soil was studied. In addition to Pb accumulation and translocation, the following parameters were assessed: chlorophyll, nitrate, ammonia, lipid peroxidation (MDA) and free amino acid content; seedling growth; and nitrogenase activity. No differences were observed in the germination of woody species seeds sown in soils with or without Pb addition. M. caesalpiniaefolia did not show visual symptoms of Pb toxicity, while the other two species demonstrated stress symptoms, including reduced shoot biomass yield, leaf area and height. Biochemical analyses of plant tissues revealed markedly different responses to increasing Pb concentrations, such as changes in foliar soluble amino acid composition in S. parahyba; changes in ammonia and nitrate content in E. speciosa, M. caesalpiniaefolia and S. parahyba; and changes in MDA content in S. parahyba. The levels of chlorophyll a and b and carotenoid were affected in the species studied. For the Nitrogen-fixing (N(2)-fixing) species E. speciosa, an increase of Pb in the soil affected nodule formation and growth, which led to reduced nitrogenase activity in seedlings. The concentration of Pb in shoots and roots increased with the Pb concentration in soil. However, most of the Pb absorbed accumulated in the roots, and only a small fraction was translocated to aboveground parts. These findings were confirmed by the low bioconcentration factor (BCF) and translocation factor (TF) values for the three species. The tolerance index (TI) values suggested that M. caesalpiniaefolia, a N(2)-fixing tree, was the species that was most tolerant to high Pb concentrations in soil, while E. speciosa and S

  5. Mrp Antiporters Have Important Roles in Diverse Bacteria and Archaea.

    Science.gov (United States)

    Ito, Masahiro; Morino, Masato; Krulwich, Terry A

    2017-01-01

    Mrp (Multiple resistance and pH) antiporter was identified as a gene complementing an alkaline-sensitive mutant strain of alkaliphilic Bacillus halodurans C-125 in 1990. At that time, there was no example of a multi-subunit type Na + /H + antiporter comprising six or seven hydrophobic proteins, and it was newly designated as the monovalent cation: proton antiporter-3 (CPA3) family in the classification of transporters. The Mrp antiporter is broadly distributed among bacteria and archaea, not only in alkaliphiles. Generally, all Mrp subunits, mrpA-G , are required for enzymatic activity. Two exceptions are Mrp from the archaea Methanosarcina acetivorans and the eubacteria Natranaerobius thermophilus , which are reported to sustain Na + /H + antiport activity with the MrpA subunit alone. Two large subunits of the Mrp antiporter, MrpA and MrpD, are homologous to membrane-embedded subunits of the respiratory chain complex I, NuoL, NuoM, and NuoN, and the small subunit MrpC has homology with NuoK. The functions of the Mrp antiporter include sodium tolerance and pH homeostasis in an alkaline environment, nitrogen fixation in Schizolobium meliloti , bile salt tolerance in Bacillus subtilis and Vibrio cholerae , arsenic oxidation in Agrobacterium tumefaciens , pathogenesis in Pseudomonas aeruginosa and Staphylococcus aureus , and the conversion of energy involved in metabolism and hydrogen production in archaea. In addition, some Mrp antiporters transport K + and Ca 2+ instead of Na + , depending on the environmental conditions. Recently, the molecular structure of the respiratory chain complex I has been elucidated by others, and details of the mechanism by which it transports protons are being clarified. Based on this, several hypotheses concerning the substrate transport mechanism in the Mrp antiporter have been proposed. The MrpA and MrpD subunits, which are homologous to the proton transport subunit of complex I, are involved in the transport of protons and their

  6. Dinâmica trófica de Plagioscion squamosissimus (Perciformes, Sciaenidae em trechos de influência da represa Capivara (rios Paranapanema e Tibagi Trophic dynamic of Plagioscion squamosissimus (Perciformes, Scianidae in stretches under influence of the Capivara dam (Paranapanema and Tibagi rivers

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    Sirlei T. Bennemann

    2006-03-01

    Full Text Available Plagioscion squamosissimus (Heckel, 1840 foi estudada em cinco trechos de influência da represa Capivara nos rios Paranapanema e Tibagi. As amostragens foram realizadas em dois períodos, 1992/1993 e 1994/1995, em coletas mensais, e sazonalmente no período 2001/2002. As capturas foram efetivadas com redes de espera simples com malhas entre 2 a 12 cm. Foram analisados 993 exemplares. Os itens alimentares identificados foram agrupados em categorias e analisados pelo método da composição percentual. A composição da dieta foi comparada entre os períodos de amostragens e entre trechos, pela análise de similaridade usando o coeficiente de Bray-Curtis. Os resultados indicaram que em todos os períodos e em todos os trechos houve uniformidade no consumo dos tipos de itens alimentares. Os itens encontrados foram agrupados em seis categorias: peixes, camarão, Odonata, Ephemeroptera, outros grupos de insetos e outros (material vegetal, detritos e organismos, raramente encontrados. Em todos os trechos e em todas as épocas analisadas, P. squamosissimus se manteve como carnívora, e no período 2001/2002 o item camarão (Macrobrachium amazonicum foi o de maior participação em sua dieta. Concomitante com o fato de a corvina trocar de alimento substituindo peixes por camarão, mudou o comportamento quanto à freqüência na tomada de alimento e na variedade de tipos de itens consumidos. Quando P. squamosissimus utiliza camarão, maior número de indivíduos são encontrados nos estômagos, na maioria dos casos com apenas este tipo de item.Plagioscion squamosissimus (Heckel, 1840 was studied in five stretches in Paranapanema and Tibagi rivers under the influence of the Capivara reservoir. The samplings were made on a monthly basis during the 1992/1993 and 1994/1995 periods and seasonally during the 2001/2002 period. The captures were made with gillnets with meshes varying between 2 and 12 cm. A total of 993 specimens had their stomach analyzed. The

  7. Boas práticas de manipulação na comercialização do camarão fresco em feiras livres de Belém, PA

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    Gisélia de Lourdes Cardoso de Alcântara

    2016-09-01

    Full Text Available A aplicação de boas práticas de manipulação entre feirantes que comercializam pescado na Amazônia é fundamental, devido aos hábitos de consumo alimentar regionais e da preferência pela aquisição de alimentos em feiras livres e mercados. Esta pesquisa teve como objetivo avaliar as condições de comercialização do camarão (Macrobrachium amazonicum fresco inteiro em diferentes feiras livres e mercados de Belém por meio de uma lista de verificação produzida de acordo com o que preconiza a Legislação Brasileira para o pescado fresco inteiro. Foram visitadas sete feiras e três mercados da região metropolitana de Belém, onde sessenta vendedores de camarão regional fresco foram entrevistados com apoio de um questionário baseado na legislação brasileira incluindo parâmetros de condições ambientais das feiras, aspectos gerais de recursos humanos dos manipuladores, equipamentos e utensílios, higienização e por fim, aspectos gerais de exposição. Na observação realizada neste trabalho 100% dos estabelecimentos apresentaram não conformidades em pelo menos um dos parâmetros analisados, denotando assim a urgência de políticas públicas visando a capacitação de feirantes em boas práticas de manipulação como política de promoção de saúde pública.

  8. Antimalarial plants used by indigenous people of the Upper Rio Negro in Amazonas, Brazil.

    Science.gov (United States)

    Kffuri, Carolina Weber; Lopes, Moisés Ahkʉtó; Ming, Lin Chau; Odonne, Guillaume; Kinupp, Valdely Ferreira

    2016-02-03

    This is the first intercultural report of antimalarial plants in this region. The aim of this study was to document the medicinal plants used against malaria by indigenous people in the Upper Rio Negro region and to review the literature on antimalarial activity and traditional use of the cited species. Participant observation, semi-structured interviews, and ethnobotanical walks were conducted with 89 informants in five indigenous communities between April 2010 and November 2013 to obtain information on the use of medicinal plants against malaria. We reviewed academic databases for papers published in scientific journals up to January 2014 in order to find works on ethnopharmacology, ethnobotany, and antimalarial activity of the species cited. Forty-six plant species belonging to 24 families are mentioned. Fabaceae (17.4%), Arecaceae (13.0%) and Euphorbiaceae (6.5%) account together for 36.9% of these species. Only seven plant species showed a relatively high consensus. Among the plant parts, barks (34.0%) and roots (28.0%) were the most widely used. Of the 46 species cited, 18 (39.1%) have already been studied for their antimalarial properties according to the literature, and 26 species (56.5%) have no laboratory essays on antimalarial activity. Local traditional knowledge of the use of antimalarials is still widespread in indigenous communities of the Upper Rio Negro, where 46 plants species used against malaria were recorded. Our studies highlight promising new plants for future studies: Glycidendron amazonicum, Heteropsis tenuispadix, Monopteryx uaucu, Phenakospermum guianensis, Pouteria ucuqui, Sagotia brachysepala and notably Aspidosperma schultesii, Ampelozizyphus amazonicus, Euterpe catinga, E. precatoria, Physalis angulata, Cocos nucifera and Swartzia argentea with high-use consensus. Experimental validation of these remedies may help in developing new drugs for malaria. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  9. Pescadoras de camarão: gênero, mobilização e sustentabilidade na ilha Trambioca, Barcarena, Pará

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    Ligia Terezinha Lopes Simonian

    Full Text Available A partir deste artigo discute-se a relação entre gênero, mobilizações sociais e sustentabilidade no contexto da ilha Trambioca, município de Barcarena, Pará, especialmente quanto à experiência das pescadoras de camarão (Macrobrachium amazonicum. A pesquisa foi orientada pela metodologia antropológica do trabalho de campo e pela produção fotográfica, mas foram igualmente incorporadas estratégias que permitiram a produção de dados para uma análise quanto à economia política. Fundamentalmente, a mesma revelou uma experiência em que as mulheres pescadoras acabam sendo o destaque na produção de camarão nessa ilha, participando de todo o processo de produção, beneficiamento e comercialização. Em face à crise ambiental e econômica globalizada, tais pescadoras propõem a criação de camarão, com o que esperam aumentar a renda. Entretanto, nesse processo organizativo, elas percebem que os limites são muitos e que precisam de financiamento, capacitação e tecnologia voltadas para a criação de camarão. Conseqüentemente, muitas implicações apresentam-se para a sustentabilidade, em especial se a possibilidade de uma economia diferenciada for levada em consideração.

  10. Molecular perspective on the American transisthmian species of Macrobrachium (Caridea, Palaemonidae

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    Leonardo Pileggi

    2014-11-01

    Full Text Available The closure of the Isthmus of Panama (about 3.1 million years ago separated previously continuous populations and created two groups of extant species, which live now in the Pacific and Atlantic drainage systems. This relatively recent event was a trigger to diversification of various species in the Neotropics, nonetheless there are exemplars that do not show sufficient morphologic variability to separate them by traditional morphological tools. About 60 years ago, some freshwater decapod species with high morphological similarity were separate by previous researchers, based on geographical distribution, in Pacific and Atlantic and considered as “sister species”. However, the complete isolation of these prawns by this geographical barrier is questionable, and it has generated doubts about the status of the following transisthmian pairs of sibling species: Macrobrachium occidentale × M. heterochirus, M. americanum × M. carcinus, M. digueti × M. olfersii, M. hancocki × M. crenulatum, M. tenellum × M. acanthurus and M. panamense × M. amazonicum. Here we evaluated the relation among these pairs of sibling species in a molecular phylogenetic context. We generated 95 new sequences: 26 sequences of 16S rDNA, 25 of COI mtDNA and 44 of 18S nDNA. In total, 181 sequences were analyzed by maximum likelihood phylogenetic method, including 12 Macrobrachium transisthmian species, as well as seven other American Macrobrachium species, and two other palaemonids. Our analysis corroborated the morphological proximity of the sibling species. Despite the high degree of morphological similarities and considerable genetic diversification encountered among the transisthmian sister species, our data support the conclusion that all species included in sibling groups studied herein are valid taxonomic entities, but not all pairs of siblings form natural groups.

  11. Molecular perspective on the American transisthmian species of Macrobrachium (Caridea, Palaemonidae)

    Science.gov (United States)

    Pileggi, Leonardo G.; Rossi, Natália; Wehrtmann, Ingo S.; Mantelatto, Fernando L.

    2014-01-01

    Abstract The closure of the Isthmus of Panama (about 3.1 million years ago) separated previously continuous populations and created two groups of extant species, which live now in the Pacific and Atlantic drainage systems. This relatively recent event was a trigger to diversification of various species in the Neotropics, nonetheless there are exemplars that do not show sufficient morphologic variability to separate them by traditional morphological tools. About 60 years ago, some freshwater decapod species with high morphological similarity were separate by previous researchers, based on geographical distribution, in Pacific and Atlantic and considered as “sister species”. However, the complete isolation of these prawns by this geographical barrier is questionable, and it has generated doubts about the status of the following transisthmian pairs of sibling species: Macrobrachium occidentale × Macrobrachium heterochirus, Macrobrachium americanum × Macrobrachium carcinus, Macrobrachium digueti × Macrobrachium olfersii, Macrobrachium hancocki × Macrobrachium crenulatum, Macrobrachium tenellum × Macrobrachium acanthurus and Macrobrachium panamense × Macrobrachium amazonicum. Here we evaluated the relation among these pairs of sibling species in a molecular phylogenetic context. We generated 95 new sequences: 26 sequences of 16S rDNA, 25 of COI mtDNA and 44 of 18S nDNA. In total, 181 sequences were analyzed by maximum likelihood phylogenetic method, including 12 Macrobrachium transisthmian species, as well as seven other American Macrobrachium species, and two other palaemonids. Our analysis corroborated the morphological proximity of the sibling species. Despite the high degree of morphological similarities and considerable genetic diversification encountered among the transisthmian sister species, our data support the conclusion that all species included in sibling groups studied herein are valid taxonomic entities, but not all pairs of siblings form natural

  12. Progress in Late Cretaceous planktonic foraminiferal stable isotope paleoecology and implications for paleoceanographic reconstructions

    Science.gov (United States)

    Petrizzo, Maria Rose; Falzoni, Francesca; Huber, Brian T.; MacLeod, Kenneth G.

    2015-04-01

    were adapted to shallow layers and eutrophic environments (Falzoni et al., 2013; Falzoni et al., in prep.). Interestingly, globigeriniform planktonic foraminifera with meridional ornamentation (Paracostellagerina and Rugoglobigerina), a morphological feature generally considered to be genetically controlled and thus taxonomically significant, typically yield higher δ13C values than co-occurring finely ornamented morphotypes (Petrizzo et al., 2008). A possible explanation to these results invokes the presence of facultative photosymbionts enhancing test calcification or alternatively, the occurrence of ecophenotypes adapted to a different sea-surface 13C/12C ratio within the same fossil species (Falzoni et al., 2014). Finally, we discuss evidences against the traditional species depth-distribution model and highlight the restrictions in performing Late Cretaceous paleoenvironmental and paleoceanographic reconstructions based on shell morphology and/or inferred life strategies of planktonic foraminifera. References Falzoni, F., Petrizzo, M.R., MacLeod, K.G., Huber, B.T. (2013). Santonian-Campanian planktonic foraminifera from Tanzania, Shatsky Rise and Exmouth Plateau: species depth ecology and paleoceanographic inferences. Marine Micropaleontology 103, 15-29. Falzoni, F., Petrizzo, M.R., Huber, B.T., MacLeod, K.G. (2014). Insights into the meridional ornamentation of the planktonic foraminiferal genus Rugoglobigerina (Late Cretaceous) and implications for taxonomy. Cretaceous Research 47, 87-104. Petrizzo, M.R., Huber, B.T., Wilson, P.A., MacLeod, K.G. (2008). Late Albian paleoceanography of the western subtropical North Atlantic. Paleoceanography 23. http://dx.doi.org/10.1029/2007PA001517 (PA1213).

  13. Medizinhistorische Literatur [Medical history literature

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    Bauer, Bruno

    2012-09-01

    Full Text Available [english] The focus of the current issue 1-2/2012 of GMS Medizin – Bibliothek – Information is on medical history literature. In six articles special collections and recent projects of medical history libraries in Berlin, Hamburg, Heidelberg, Leipzig, Vienna and Zurich are presented. The authors in this issue are Melanie Scholz & Vera Seehausen (From Augusta to Klingsor, from Luise to Benjamin – past, present and future of the library of the Institute of the History of Medicine in Berlin, Alexandra Veith (Library of the Institute for History of Medicine and Ethics of Medicine, Heidelberg, Melanie Kintzel, Meike Knittel & Tanja Krutky (Historic collections of the Medical Library of the University of the University Medical Center Hamburg-Eppendorf and their deacidification, Dagmar Geithner (Library of the Karl Sudhoff Institute for the History of Medicine and Science, Leipzig – a Historical Review, Harald Albrecht, Bruno Bauer & Walter Mentzel (The Josephinian Library and the medical-historic stock of the University Library of the Medical University of Vienna and Monika Huber & Ursula Reis (Library of the Institute and Museum of the History of Medicine Zurich.[german] Schwerpunktthema der aktuellen Ausgabe 1-2/2012von GMS Medizin – Bibliothek – Information ist medizinhistorische Literatur. In sechs Beiträgen werden Bestände und aktuelle Projekte medizinhistorischer Bibliotheken in Berlin, Hamburg, Heidelberg, Leipzig, Wien und Zürich vorgestellt. Verfasst wurden die Beiträge der Schwerpunktausgabe von Melanie Scholz & Vera Seehausen (Von August zu Klingsor, von Luise zu Benjamin – Vergangenheit, Gegenwart und Zukunft der Bibliothek des Instituts für Geschichte der Medizin in Berlin, Melanie Kintzel, Meike Knittel & Tanja Krutky (Medizinhistorische Buchbestände am Universitätsklinikum Hamburg-Eppendorf und ihre Entsäuerung, Ara Veith (Bibliothek des Instituts für Geschichte und Ethik der Medizin in Heidelberg, Dagmar Geithner

  14. Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay.

    Science.gov (United States)

    An, F P; Balantekin, A B; Band, H R; Bishai, M; Blyth, S; Butorov, I; Cao, D; Cao, G F; Cao, J; Cen, W R; Chan, Y L; Chang, J F; Chang, L C; Chang, Y; Chen, H S; Chen, Q Y; Chen, S M; Chen, Y X; Chen, Y; Cheng, J H; Cheng, J; Cheng, Y P; Cherwinka, J J; Chu, M C; Cummings, J P; de Arcos, J; Deng, Z Y; Ding, X F; Ding, Y Y; Diwan, M V; Dove, J; Draeger, E; Dwyer, D A; Edwards, W R; Ely, S R; Gill, R; Gonchar, M; Gong, G H; Gong, H; Grassi, M; Gu, W Q; Guan, M Y; Guo, L; Guo, X H; Hackenburg, R W; Han, R; Hans, S; He, M; Heeger, K M; Heng, Y K; Higuera, A; Hor, Y K; Hsiung, Y B; Hu, B Z; Hu, L M; Hu, L J; Hu, T; Hu, W; Huang, E C; Huang, H X; Huang, X T; Huber, P; Hussain, G; Jaffe, D E; Jaffke, P; Jen, K L; Jetter, S; Ji, X P; Ji, X L; Jiao, J B; Johnson, R A; Kang, L; Kettell, S H; Kohn, S; Kramer, M; Kwan, K K; Kwok, M W; Kwok, T; Langford, T J; Lau, K; Lebanowski, L; Lee, J; Lei, R T; Leitner, R; Leung, K Y; Leung, J K C; Lewis, C A; Li, D J; Li, F; Li, G S; Li, Q J; Li, S C; Li, W D; Li, X N; Li, X Q; Li, Y F; Li, Z B; Liang, H; Lin, C J; Lin, G L; Lin, P Y; Lin, S K; Ling, J J; Link, J M; Littenberg, L; Littlejohn, B R; Liu, D W; Liu, H; Liu, J L; Liu, J C; Liu, S S; Lu, C; Lu, H Q; Lu, J S; Luk, K B; Ma, Q M; Ma, X Y; Ma, X B; Ma, Y Q; Martinez Caicedo, D A; McDonald, K T; McKeown, R D; Meng, Y; Mitchell, I; Monari Kebwaro, J; Nakajima, Y; Napolitano, J; Naumov, D; Naumova, E; Ngai, H Y; Ning, Z; Ochoa-Ricoux, J P; Olshevski, A; Pan, H-R; Park, J; Patton, S; Pec, V; Peng, J C; Piilonen, L E; Pinsky, L; Pun, C S J; Qi, F Z; Qi, M; Qian, X; Raper, N; Ren, B; Ren, J; Rosero, R; Roskovec, B; Ruan, X C; Shao, B B; Steiner, H; Sun, G X; Sun, J L; Tang, W; Taychenachev, D; Tsang, K V; Tull, C E; Tung, Y C; Viaux, N; Viren, B; Vorobel, V; Wang, C H; Wang, M; Wang, N Y; Wang, R G; Wang, W; Wang, W W; Wang, X; Wang, Y F; Wang, Z; Wang, Z; Wang, Z M; Wei, H Y; Wen, L J; Whisnant, K; White, C G; Whitehead, L; Wise, T; Wong, H L H; Wong, S C F; Worcester, E; Wu, Q; Xia, D M; Xia, J K; Xia, X; Xing, Z Z; Xu, J Y; Xu, J L; Xu, J; Xu, Y; Xue, T; Yan, J; Yang, C G; Yang, L; Yang, M S; Yang, M T; Ye, M; Yeh, M; Young, B L; Yu, G Y; Yu, Z Y; Zang, S L; Zhan, L; Zhang, C; Zhang, H H; Zhang, J W; Zhang, Q M; Zhang, Y M; Zhang, Y X; Zhang, Y M; Zhang, Z J; Zhang, Z Y; Zhang, Z P; Zhao, J; Zhao, Q W; Zhao, Y F; Zhao, Y B; Zheng, L; Zhong, W L; Zhou, L; Zhou, N; Zhuang, H L; Zou, J H

    2016-02-12

    This Letter reports a measurement of the flux and energy spectrum of electron antineutrinos from six 2.9 GWth nuclear reactors with six detectors deployed in two near (effective baselines 512 and 561 m) and one far (1579 m) underground experimental halls in the Daya Bay experiment. Using 217 days of data, 296 721 and 41 589 inverse β decay (IBD) candidates were detected in the near and far halls, respectively. The measured IBD yield is (1.55±0.04) ×10(-18)  cm(2) GW(-1) day(-1) or (5.92±0.14) ×10(-43)  cm(2) fission(-1). This flux measurement is consistent with previous short-baseline reactor antineutrino experiments and is 0.946±0.022 (0.991±0.023) relative to the flux predicted with the Huber-Mueller (ILL-Vogel) fissile antineutrino model. The measured IBD positron energy spectrum deviates from both spectral predictions by more than 2σ over the full energy range with a local significance of up to ∼4σ between 4-6 MeV. A reactor antineutrino spectrum of IBD reactions is extracted from the measured positron energy spectrum for model-independent predictions.

  15. Highlights of Astronomy. Volume 10, as presented at the XXIInd General Assembly of the IAU, 1994.

    Science.gov (United States)

    Appenzeller, I.

    The Highlights of Astronomy, Vol. 10, reports the major scientific presentations made at the XXIInd General Assembly, 15 - 27 August 1994, The Hague, The Netherlands. Contents: Preface. I. Invited discourses. II. Joint discussions: 1. Women in astronomy (S. Torres-Peimbert, ed.). 2. History of astronomy (S. Débarbat, ed.). 3. Current developments in astronomy education (J. R. Percy, ed.). 4. Towards the establishment of the astronomical standards (T. Fukushima, ed.). 5. Nutation (V. Dehant, ed.). 6. Time scales: state of the art (E. Proverbio, ed.). 7. Sun and heliosphere - challenges for solar-terrestrial physics, magneto- and hydrodynamics (M. C. E. Huber, ed.). 8. Helio- and asteroseismology (W. Däppen, ed.). 9. Dust around young stars: How related to solar system dust? (M. S. Hanner). 10. Accuracy of the HR diagram and related parameters (M. Gerbaldi, ed.). 11. Recent advances in convection theory and modelling (S. Sofia). 12. Stellar and interstellar lithium and primordial nucleosynthesis (F. Spite, ed.). 13. Extragalactic planetary nebulae (Y. Terzian, ed.). 14. Activity in the central part of galaxies (V. Trimble, ed.). 15. Astrophysical applications of powerful new atomic databases (W. L. Wiese, ed.). 16. The status of archiving astronomical data (R. E. M. Griffin). III. Special sessions: 1. The collision of comet P/Shoemaker-Levy 9 with Jupiter (C. de Bergh, ed.). 2. Gravitational lens monitoring (J.-P. Swings). IV. Working group meetings: 1. Problems of astronomy in Africa (A. H. Batten, ed.). 2. International catalog projects (C. de Vegt, L. V. Morrison, eds.).

  16. Eating attitudes, body image and risk for eating disorders in a group of Spanish dancers.

    Science.gov (United States)

    Jáuregui Lobera, Ignacio; Bolaños-Ríos, Patricia; Valero-Blanco, Eva; Ortega-de-la-Torre, Ángeles

    2016-09-20

    Prevalence of eating disorders (ED) and discrepancies between actual weight and weight perception seem much higher in dancers. The aims analysed in 77 dancers were: risk for ED; relationship between eating attitudes and psychological variables; dieting and self-weighing, and body image distortion. Weight- and body image-related variables, dieting, self-reported physical fitness, specific ED-related variables and other psychological variables were assessed. The robust Huber's model was applied in order to test the inflluence of the variables analysed on the Eating Attitudes Test (EAT-40) scores. In case of categorical variables, the Chi-square (χ2-test) or the Fisher's exact test were applied. Higher risk of ED was not obtained. Despite the relationship between EAT-40 and BMI, body appreciation and drive for thinness, scores on EAT-40 and BMI do not suggest higher risk in dancers. Dancers had a similar weight perception than other populations and body dissatisfaction seems not to be worse than the reported in other types of participants. Despite some limitations, our study adds some data in this field of study bearing in mind the use of a cluster of variables previously not taken into account as a whole.

  17. Reseñas

    Directory of Open Access Journals (Sweden)

    Comité Editorial

    1986-06-01

    Full Text Available SILBERREISEN, R. K. & MONTADA, L. (eds, Entwichlungspsychologie; Ein Handbuch in Schlüsselbegriffen (Psicología del desarrollo. Un manual de conceptos básicos. Munich - Viena Baltimore: Urban & Schwarzenberg, 1983, VI + 296 pgs. PETZOLD, M. (1983, Entwichlungspsychologie in der VR China. Issenschaftsgeschich tliche Ana/y se, entwichlungspsychologische Forschung und ihre Anwendung (Psicología del desarrollo en la República Popular China. Análisis histórico-científico, investigación en psicología del desarrollo y su aplicación Saarbrüken, Fort Lauderdale: Breitenbach, XIV+ 3466 pgs. BAUMANN, U. BERBALK H., & SEIDENSTUCKER, G., eds. (1984, Klinische Psychologie. Trends in Forschung and Praxis (Psicología clínica. Tendencias en la investigación y en la práctica, Vol. 6. Berna- Stutgart, Viena;Hans Huber, 292 pgs. BLANCK, G., Editor (1984, Vigotski. Memoria y vigencia. Buenos Aires: C. y Ediciones, 268 pgs. THIELEN, M. (1948, Sowjetische Psychologie und Marxismus. Geschichte und Kritik (Psicología soviética y marxismo. Historia y crítica Frankfurt / New York: Campus, 330 pgs.

  18. Photosynthetic Reaction Centres – from Basic Research to Application Possibilities

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    Krisztina NAGY

    2010-06-01

    Full Text Available There is no doubt that studying the photosynthetic conversion of light into chemical energy is extremely important in many points of view: 1 technical-in order to improve the utilization of the solar energy; 2 food production – to improve the photosynthetic production of plants in agriculture; 3 ecology – keeping the primer production in ecosystems in the biosphere balanced, etc. In the photosynthetic reaction centre protein, RC, light energy is converted by a quantum yield of almost unity. There is no such a system designed by human which is able to do that. The RC purified from purple bacteria provides an extremely unique system for studying the requirements for high efficiency conversion of light into electrochemical energy. Thanks to the recent structural (e.g. crystallography (Nobel prize to Michel, Deisenhofer, Huber and functional (Nobel prize to Marcus results together with the works of molecular biology, computer- and electro-techniques, a wealth of information made a relatively clear picture about the kinetics, energetics and stabilization of electron transport within this protein that opens possibilities for new generation practical applications. In this paper we provide a short summary of fields in which the reaction centre protein can be important from practical points of view.

  19. 2nd European Congress of Mathematics

    CERN Document Server

    Katona, G; Recski, A; Sza’sz, D

    1998-01-01

    This is the second volume of the procedings of the second European Congress of Mathematics. Volume I presents the speeches delivered at the Congress, the list of lectures, and short summaries of the achievements of the prize winners. Together with volume II it contains a collection of contributions by the invited lecturers. Finally, volume II also presents reports on some of the Round Table discussions. This two-volume set thus gives an overview of the state of the art in many fields of mathematics and is therefore of interest to every professional mathematician. Contributors: Vol. I: N. Alon, L. Ambrosio, K. Astala, R. Benedetti, Ch. Bessenrodt, F. Bethuel, P. Bjørstad, E. Bolthausen, J. Bricmont, A. Kupiainen, D. Burago, L. Caporaso, U. Dierkes, I. Dynnikov, L.H. Eliasson, W.T. Gowers, H. Hedenmalm, A. Huber, J. Kaczorowski, J. Kollár, D.O. Kramkov, A.N. Shiryaev, C. Lescop, R. März. Vol. II: J. Matousek, D. McDuff, A.S. Merkurjev, V. Milman, St. Müller, T. Nowicki, E. Olivieri, E. Scoppola, V.P. Platon...

  20. Three-dimensional reconstruction and modeling of middle ear biomechanics by high-resolution computed tomography and finite element analysis.

    Science.gov (United States)

    Lee, Chia-Fone; Chen, Peir-Rong; Lee, Wen-Jeng; Chen, Jyh-Horng; Liu, Tien-Chen

    2006-05-01

    To present a systematic and practical approach that uses high-resolution computed tomography to derive models of the middle ear for finite element analysis. This prospective study included 31 subjects with normal hearing and no previous otologic disorders. Temporal bone images obtained from 15 right ears and 16 left ears were used for evaluation and reconstruction. High-resolution computed tomography of temporal bone was performed using simultaneous acquisition of 16 sections with a collimated slice thickness of 0.625 mm. All images were transferred to an Amira visualization system for three-dimensional reconstruction. The created three-dimensional model was translated into two commercial modeling packages, Patran and ANSYS, for finite element analysis. The characteristic dimensions of the model were measured and compared with previously published histologic section data. This result confirms that the geometric model created by the proposed method is accurate except that the tympanic membrane is thicker than when measured by the histologic section method. No obvious difference in the geometrical dimension between right and left ossicles was found (P > .05). The three-dimensional model created by finite element method and predicted umbo and stapes displacements are close to the bounds of the experimental curves of Nishihara's, Huber's, Gan's, and Sun's data across the frequency range of 100 to 8000 Hz. The model includes a description of the geometry of the middle ear components and dynamic equations of vibration. The proposed method is quick, practical, low-cost, and, most importantly, noninvasive as compared with histologic section methods.

  1. Investigation of the fluid flow dynamic parameters for Newtonian and non-Newtonian materials: an approach to understanding the fluid flow-like structures within fault zones

    Science.gov (United States)

    Tanaka, H.; Shiomi, Y.; Ma, K.-F.

    2017-11-01

    To understand the fault zone fluid flow-like structure, namely the ductile deformation structure, often observed in the geological field (e.g., Ramsay and Huber The techniques of modern structure geology, vol. 1: strain analysis, Academia Press, London, 1983; Hobbs and Ord Structure geology: the mechanics of deforming metamorphic rocks, Vol. I: principles, Elsevier, Amsterdam, 2015), we applied a theoretical approach to estimate the rate of deformation, the shear stress and the time to form a streak-line pattern in the boundary layer of viscous fluids. We model the dynamics of streak lines in laminar boundary layers for Newtonian and pseudoplastic fluids and compare the results to those obtained via laboratory experiments. The structure of deformed streak lines obtained using our model is consistent with experimental observations, indicating that our model is appropriate for understanding the shear rate, flow time and shear stress based on the profile of deformed streak lines in the boundary layer in Newtonian and pseudoplastic viscous materials. This study improves our understanding of the transportation processes in fluids and of the transformation processes in fluid-like materials. Further application of this model could facilitate understanding the shear stress and time history of the fluid flow-like structure of fault zones observed in the field.[Figure not available: see fulltext.

  2. A Coarse Alignment Method Based on Digital Filters and Reconstructed Observation Vectors.

    Science.gov (United States)

    Xu, Xiang; Xu, Xiaosu; Zhang, Tao; Li, Yao; Wang, Zhicheng

    2017-03-29

    In this paper, a coarse alignment method based on apparent gravitational motion is proposed. Due to the interference of the complex situations, the true observation vectors, which are calculated by the apparent gravity, are contaminated. The sources of the interference are analyzed in detail, and then a low-pass digital filter is designed in this paper for eliminating the high-frequency noise of the measurement observation vectors. To extract the effective observation vectors from the inertial sensors' outputs, a parameter recognition and vector reconstruction method are designed, where an adaptive Kalman filter is employed to estimate the unknown parameters. Furthermore, a robust filter, which is based on Huber's M-estimation theory, is developed for addressing the outliers of the measurement observation vectors due to the maneuver of the vehicle. A comprehensive experiment, which contains a simulation test and physical test, is designed to verify the performance of the proposed method, and the results show that the proposed method is equivalent to the popular apparent velocity method in swaying mode, but it is superior to the current methods while in moving mode when the strapdown inertial navigation system (SINS) is under entirely self-contained conditions.

  3. [The cenesthesiopathies].

    Science.gov (United States)

    Blom, J D; Neven, A; Aouaj, Y; Jonker, B; Hoek, H W

    2010-01-01

    Up till a century ago the classic concepts of cenesthesis and cenesthesiopathy played a major role in the conceptualisation of aberrant somatosensory sensations and disturbances in the sensation of physical existence. Although these concepts are considered obsolete by a number of authors, the conceptual work of the German psychiatrist Gert Huber and the results of modern neuroimaging studies point to the need for a re-evaluation of the concepts cenesthesis and cenesthesiopathy. Background information was obtained from PubMed, Embase and the medical historical literature. By way of illustration, two cases are presented: the first is a female patient with a strongly diminished sense of physical existence (hypocenesthesiopathy) and the second is a male patient with such pronounced somatosensory sensations that he believed he was being transformed into a werewolf (hypercenesthesiopathy, clinical lycanthropy). On the basis of the literature and the two case studies, it is shown that the concepts of cenesthesis and cenesthesiopathy may be helpful in the conceptualisation of disorders of the sensation of bodily existence brought about by aberrant somatosensory sensations. In the cases of peculiar and unexplained physical symptoms, the cenesthesiopathies should be part of the differential diagnosis. Particularly if patients have longlasting, medication-resistant forms of cenesthesiopathy, it is strongly recommended that such patients undergo neuroimaging and are given an EEG so that treatable somatic conditions can either be demonstrated or ruled out.

  4. Regularized image denoising based on spectral gradient optimization

    International Nuclear Information System (INIS)

    Lukić, Tibor; Lindblad, Joakim; Sladoje, Nataša

    2011-01-01

    Image restoration methods, such as denoising, deblurring, inpainting, etc, are often based on the minimization of an appropriately defined energy function. We consider energy functions for image denoising which combine a quadratic data-fidelity term and a regularization term, where the properties of the latter are determined by a used potential function. Many potential functions are suggested for different purposes in the literature. We compare the denoising performance achieved by ten different potential functions. Several methods for efficient minimization of regularized energy functions exist. Most are only applicable to particular choices of potential functions, however. To enable a comparison of all the observed potential functions, we propose to minimize the objective function using a spectral gradient approach; spectral gradient methods put very weak restrictions on the used potential function. We present and evaluate the performance of one spectral conjugate gradient and one cyclic spectral gradient algorithm, and conclude from experiments that both are well suited for the task. We compare the performance with three total variation-based state-of-the-art methods for image denoising. From the empirical evaluation, we conclude that denoising using the Huber potential (for images degraded by higher levels of noise; signal-to-noise ratio below 10 dB) and the Geman and McClure potential (for less noisy images), in combination with the spectral conjugate gradient minimization algorithm, shows the overall best performance

  5. Mechanical and physical properties of LVL panels made from three amazonic species

    Directory of Open Access Journals (Sweden)

    Nerci Nina Lima

    2013-09-01

    Full Text Available This work aimed to evaluate the physical-mechanical performance of laminated veneer lumber (LV produced with different compositions of tropical Amazonian species and Pinus oocarpa. Three tropical species were used: Cordia goeldiana Huber. (Freijó, Parkia gigantocarpa Ducke (Faveira and Brosimum parinarioides Ducke (Amapá doce. For comparison, Pinus oocarpa wood obtained from an experimental stand was used. Three types of veneer combination were evaluated: (i one species; (ii the three Amazonian species combination and (iii combination of Amazonian species with Pinus oocarpa. The acoustic propagation velocity was also evaluated with the stress wave timer for correlation between dynamic modulus of elasticity (MOEd and static modulus of elasticity (MOEs of the panel. Panels produced with Amazonian species presented lower water absorption than Pinus oocarpa panels. Regarding the mechanical properties, the lowest strength was verified for "faveira" panels. There was no statistical difference among panels in glue line shear strength. The stress wave timer could be used for prediction of MOEs by using MOEd.

  6. A comparison of parametric and nonparametric methods for normalising cDNA microarray data.

    Science.gov (United States)

    Khondoker, Mizanur R; Glasbey, Chris A; Worton, Bruce J

    2007-12-01

    Normalisation is an essential first step in the analysis of most cDNA microarray data, to correct for effects arising from imperfections in the technology. Loess smoothing is commonly used to correct for trends in log-ratio data. However, parametric models, such as the additive plus multiplicative variance model, have been preferred for scale normalisation, though the variance structure of microarray data may be of a more complex nature than can be accommodated by a parametric model. We propose a new nonparametric approach that incorporates location and scale normalisation simultaneously using a Generalised Additive Model for Location, Scale and Shape (GAMLSS, Rigby and Stasinopoulos, 2005, Applied Statistics, 54, 507-554). We compare its performance in inferring differential expression with Huber et al.'s (2002, Bioinformatics, 18, 96-104) arsinh variance stabilising transformation (AVST) using real and simulated data. We show GAMLSS to be as powerful as AVST when the parametric model is correct, and more powerful when the model is wrong. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

  7. Multi-Frame Super-Resolution of Gaofen-4 Remote Sensing Images.

    Science.gov (United States)

    Xu, Jieping; Liang, Yonghui; Liu, Jin; Huang, Zongfu

    2017-09-18

    Gaofen-4 is China's first geosynchronous orbit high-definition optical imaging satellite with extremely high temporal resolution. The features of staring imaging and high temporal resolution enable the super-resolution of multiple images of the same scene. In this paper, we propose a super-resolution (SR) technique to reconstruct a higher-resolution image from multiple low-resolution (LR) satellite images. The method first performs image registration in both the spatial and range domains. Then the point spread function (PSF) of LR images is parameterized by a Gaussian function and estimated by a blind deconvolution algorithm based on the maximum a posteriori (MAP). Finally, the high-resolution (HR) image is reconstructed by a MAP-based SR algorithm. The MAP cost function includes a data fidelity term and a regularized term. The data fidelity term is in the L₂ norm, and the regularized term employs the Huber-Markov prior which can reduce the noise and artifacts while preserving the image edges. Experiments with real Gaofen-4 images show that the reconstructed images are sharper and contain more details than Google Earth ones.

  8. Instrument developments for magnetic and high-resolution diffraction at the XMaS beamline

    International Nuclear Information System (INIS)

    Brown, S.D.; Thompson, P.; Cooper, M.J.; Kervin, J.; Paul, D.F.; Stirling, W.G.; Stunault, A.

    2001-01-01

    The XMaS beamline is situated on dipole BM28 at the European Synchrotron Radiation Facility (ESRF). It has been designed to perform magnetic and high-resolution diffraction for a British Collaborating Research Group (CRG) over an energy range of 3-15 keV in a focused monochromatic beam mode. Since the beamline became operational in April 1998, various instrument developments have been made. These include both mechanical and opto-mechanical devices of general interest to the SR community, three of which are highlighted in this paper. Firstly, a motorised x,y,z sample mount capable of holding an APD cryostat has been developed; this device is useful not only for initial sample alignment, but also in mapping a sample for the location of single crystallites. Secondly, novel in-vacuum slits have been developed which allow definition of the beam footprint close to the sample. Thirdly, together with Huber Diffraction GmbH, an in-vacuum polarisation analyser for the analysis of magnetic scattering has been developed

  9. HTSeq--a Python framework to work with high-throughput sequencing data.

    Science.gov (United States)

    Anders, Simon; Pyl, Paul Theodor; Huber, Wolfgang

    2015-01-15

    A large choice of tools exists for many standard tasks in the analysis of high-throughput sequencing (HTS) data. However, once a project deviates from standard workflows, custom scripts are needed. We present HTSeq, a Python library to facilitate the rapid development of such scripts. HTSeq offers parsers for many common data formats in HTS projects, as well as classes to represent data, such as genomic coordinates, sequences, sequencing reads, alignments, gene model information and variant calls, and provides data structures that allow for querying via genomic coordinates. We also present htseq-count, a tool developed with HTSeq that preprocesses RNA-Seq data for differential expression analysis by counting the overlap of reads with genes. HTSeq is released as an open-source software under the GNU General Public Licence and available from http://www-huber.embl.de/HTSeq or from the Python Package Index at https://pypi.python.org/pypi/HTSeq. © The Author 2014. Published by Oxford University Press.

  10. Leadership and Cultural Competence of Healthcare Professionals

    Science.gov (United States)

    Dauvrin, Marie; Lorant, Vincent

    2015-01-01

    Background International migration is a global phenomenon challenging healthcare professionals to provide culturally competent care. Objectives The purpose of this study was to investigate the influence of leaders on the cultural competence of healthcare professionals. Methods A cross-sectional survey was conducted from 2010 to 2012 to obtain data for a social network analysis in 19 inpatient services and five primary care services in Belgium. The Competences in Ethnicity and Health questionnaire was used. A total of 507 healthcare professionals, including 302 nurses, identified their social relationships with other healthcare professionals working in their service. Highest in-degree centrality was used to identify the leaders within each health service. Multiple regressions with the Huber sandwich estimator were used to link cultural competence of leaders with the cultural competence of the rest of the healthcare staff. Results Cultural competence of the healthcare staff was associated with the cultural competence of the leaders. This association remained significant for two specific domains of cultural competence—mediation and paradigm—after controlling for contextual and sociodemographic variables. Interaction analysis suggested that the leadership effect varied with the degree of cultural competence of the leaders. Discussion Cultural competence among healthcare professionals is acquired partly through leadership. Social relationships and leadership effects within health services should be considered when developing and implementing culturally competent strategies. This requires a cautious approach as the most central individuals are not always the same persons as the formal leaders. PMID:25871625

  11. USE OF AMAZONIAN SPECIES FOR AGING DISTILLED BEVERAGES: PHYSICAL AND CHEMICAL WOOD ANALYSIS

    Directory of Open Access Journals (Sweden)

    Jonnys Paz Castro

    2015-06-01

    Full Text Available The process of storing liquor in wooden barrels is a practice that aims to improve the sensory characteristics, such as color, aroma and flavor, of the beverage. The quality of the liquor stored in these barrels depends on wood characteristics such as density, permeability, chemical composition, anatomy, besides the wood heat treatment used to fabricate the barrels. Brazil has a great diversity of forests, mainly in the north, in the Amazon. This region is home to thousands of tree species, but is limited to the use of only a few native species to store liquors. The objective of this study was to determine some of the physical and chemical characteristics for four Amazon wood species. The results obtained in this study will be compared with others from woods that are traditionally used for liquor storage. The species studied were angelim-pedra (Hymenolobium petraeum Ducke cumarurana (Dipteryx polyphylla (Huber Ducke, jatobá (Hymenaea courbaril L. and louro-vermelho (Nectandra rubra (Mez CK Allen. The trees were collected from Precious Woods Amazon Company forest management area, in Silves, Amazonas. Analyzes such as: concentration of extractives, lignin amount, percentage of minerals (ash and tannin content, density, elemental analysis (CHNS-O and thermal analysis were done. It was observed that the chemical composition (lignin, holocellulose and elemental analysis (percentage of C, H, N and O of the woods have significant differences. The jatobá wood presented higher tannin content, and in the thermal analysis, was that which had the lowest mass loss.

  12. Project risk management in the construction of high-rise buildings

    Science.gov (United States)

    Titarenko, Boris; Hasnaoui, Amir; Titarenko, Roman; Buzuk, Liliya

    2018-03-01

    This paper shows the project risk management methods, which allow to better identify risks in the construction of high-rise buildings and to manage them throughout the life cycle of the project. One of the project risk management processes is a quantitative analysis of risks. The quantitative analysis usually includes the assessment of the potential impact of project risks and their probabilities. This paper shows the most popular methods of risk probability assessment and tries to indicate the advantages of the robust approach over the traditional methods. Within the framework of the project risk management model a robust approach of P. Huber is applied and expanded for the tasks of regression analysis of project data. The suggested algorithms used to assess the parameters in statistical models allow to obtain reliable estimates. A review of the theoretical problems of the development of robust models built on the methodology of the minimax estimates was done and the algorithm for the situation of asymmetric "contamination" was developed.

  13. The Folding and Fracturing of Rocks: A milestone publication in Structural Geology research

    Science.gov (United States)

    Lisle, Richard; Bastida, Fernando

    2017-04-01

    In the field of structural geology, the textbook written by John G Ramsay in 1967, reprinted in 2004 and translated into Spanish and Chinese, is the one that has made the greatest research impact. With citations exceeding 4000 (Google Scholar) it far surpasses books by other authors on the subject, with this figure only being approached by his later book Modern Structural Geology (Ramsay and Huber 1983). In this paper we consider the factors that account for the book's success despite the fact that it is a research-level text beyond the comfort zone of most undergraduates. We also take stock of other measures of the book's success; the way it influenced the direction subsequent research effort. We summarize the major advances in structural geology that were prompted by Ramsay's book. Finally we consider the book's legacy. Before the publication of the book in 1967 structural geology had been an activity that had concentrated almost exclusively on geological mapping aimed at establishing the geometrical configuration of rock units. In fact, Ramsay himself has produced beautiful examples of such maps. However, the book made us aware that the geometrical pattern is controlled by the spatial variation of material properties, the boundary conditions, the deformation environment and the temporal variation of stresses. With the arrival of the book Structural Geology came of age as a modern scientific discipline that employed a range of tools such as those of physics, maths and engineering as well as those of geology.

  14. Influence of religious aspects and personal beliefs on psychological behavior: focus on anxiety disorders

    Directory of Open Access Journals (Sweden)

    Agorastos A

    2014-03-01

    Full Text Available Agorastos Agorastos,1 Cüneyt Demiralay,1 Christian G Huber2 1Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; 2Department of Psychiatry and Psychotherapy, University of Basel, Basel, Switzerland Abstract: The current paper presents literature relevant to the relationship of religiosity, spirituality, and personal beliefs with mental health and, in particular, anxiety disorders as an empirical narrative review, providing an overview on the most important and clinically relevant research results on the topic. The relationship between religiosity/spirituality, personal beliefs (ie, magical ideation and paranormal beliefs, and mental health has lately been studied extensively, and results have indicated significant associations among these variables. However, scientific approaches to this field are complex and multidimensional, partly leading to poor operationalization, incomparable data, and contradictory results. Literature demonstrates that higher religiosity/spirituality and magical ideation scores have often been associated with increased obsessive–compulsive traits. Similar results could not be confidently replicated for other anxiety disorders. However, it is still unclear if these differences suggest a specific association with obsessive–compulsive traits and reflect deviating etiopathogenetic and cognitive aspects between obsessive–compulsive disorder and other anxiety disorders, or if these results are biased through other factors. Religiosity/spirituality and personal beliefs constitute important parameters of human experience and deserve greater consideration in the psychotherapeutic treatment of psychiatric disorders. Keywords: spirituality, religiosity, religion, paranormal beliefs, magical ideation anxiety disorders, obsessive compulsive disorder, OCD, anxiety, coping

  15. Photosynthetic Reaction Centres-from Basic Research to Application

    Directory of Open Access Journals (Sweden)

    László NAGY

    2010-06-01

    Full Text Available There is no doubt that studying the photosynthetic conversion of light into chemical energy is extremely important in many points of view; e.g., 1 technical-in order to improve the utilization of the solar energy; 2 food production-to improve the photosynthetic production of plants in agriculture; 3 ecology-keeping the primer production in ecosystems in the biosphere balanced, etc. In the photosynthetic reaction centre protein, RC, light energy is converted by a quantum yield of almost unity. There is no such a system designed by human which is able to do that. The RC purified from purple bacteria provides an extremely unique system for studying the requirements for high efficiency conversion of light into electrochemical energy. Thanks to the recent structural (e.g. crystallography (Nobel prize to Michel, Deisenhofer, Huber and functional (Nobel prize to Marcus results together with the works of molecular biology, computer- and electro-techniques, a wealth of information made a relatively clear picture about the kinetics, energetics and stabilization of electron transport within this protein that opens possibilities for new generation practical applications. In this paper we provide a short summary of fields in which the reaction centre protein can be important from practical points of view.

  16. The Effect of Private Benefits of Control on Minority Shareholders: A Theoretical Model and Empirical Evidence from State Ownership

    Directory of Open Access Journals (Sweden)

    Kerry Liu

    2017-06-01

    Full Text Available Purpose: The purpose of this paper is to examine the effect of private benefits of control on minority shareholders. Design/methodology/approach: A theoretical model is established. The empirical analysis includes hand-collected data from a wide range of data sources. OLS and 2SLS regression analysis are applied with Huber-White standard errors. Findings: The theoretical model shows that, while private benefits are generally harmful to minority shareholders, the overall effect depends on the size of large shareholder ownership. The empirical evidence from government ownership is consistent with theoretical analysis. Research limitations/implications: The empirical evidence is based on a small number of hand-collected data sets of government ownership. Further studies can be expanded to other types of ownership, such as family ownership and financial institutional ownership. Originality/value: This study is the first to theoretically analyse and empirically test the effect of private benefits. In general, this study significantly contributes to the understanding of the effect of large shareholder and corporate governance.

  17. [Subcutaneous implantation type central venous port management in patients with malignant tumors effect of different antiseptic agents on central venous port-related infection].

    Science.gov (United States)

    Sato, Junya; Kumagai, Masumi; Kato, Kenichi; Akahane, Akio; Suzuki, Michiko; Kashiwaba, Masahiro; Sone, Miyuki; Kudo, Kenzo

    2014-08-01

    Subcutaneous implantation type central venous ports(CV ports)are used in chemotherapy. Here, we prospectively examined the frequency of CV port-related infections when the disinfectant was changed from 10% povidone iodine to 1% chlorhexidine ethanol or 70% ethanol. The subjects were patients with malignant tumors, who had newly been implanted with CV ports. We examined CV port-related infections at 1 week after CV port implantation and every 2 weeks thereafter, following sterilization upon insertion of a Huber needle to the CV port. CV port evulsion due to CV port-related infection was noted in 3 patients(4.8%)in whom 15%chlorhexidine ethanol was used(n=62)and in 2 patients(3.3%)in whom 70% ethanol was used(n=60). Infection rates per 1,000 days of CV port use were 1.48% and 1.01%, respectively. Thus, the outcomes of sterilization using 1% chlorhexidine ethanol and 70% ethanol did not differ significantly from those on using 10% povidone iodine for sterilization, based on preliminary results at our institution(3 of 59 patients[5.1%]had port evulsion due to CV port-related infection and the infection rate per 1,000 days of CV port use was 1.47%, Akahane et al, 2012). Chlorhexidine ethanol and ethanol are very convenient to use because they dry quickly and do not need discoloration. Accordingly, chlorhexidine ethanol and ethanol might be useful in CV port management.

  18. Complexified coherent states and quantum evolution with non-Hermitian Hamiltonians

    International Nuclear Information System (INIS)

    Graefe, Eva-Maria; Schubert, Roman

    2012-01-01

    The complex geometry underlying the Schrödinger dynamics of coherent states for non-Hermitian Hamiltonians is investigated. In particular, two seemingly contradictory approaches are compared: (i) a complex WKB formalism, for which the centres of coherent states naturally evolve along complex trajectories, which leads to a class of complexified coherent states; (ii) the investigation of the dynamical equations for the real expectation values of position and momentum, for which an Ehrenfest theorem has been derived in a previous paper, yielding real but non-Hamiltonian classical dynamics on phase space for the real centres of coherent states. Both approaches become exact for quadratic Hamiltonians. The apparent contradiction is resolved building on an observation by Huber, Heller and Littlejohn, that complexified coherent states are equivalent if their centres lie on a specific complex Lagrangian manifold. A rich underlying complex symplectic geometry is unravelled. In particular, a natural complex structure is identified that defines a projection from complex to real phase space, mapping complexified coherent states to their real equivalents. This article is part of a special issue of Journal of Physics A: Mathematical and Theoretical devoted to ‘Coherent states: mathematical and physical aspects’. (paper)

  19. Quantum Features of Anionic Species He*⁻ and He₂*⁻ in Small He(N) Clusters.

    Science.gov (United States)

    Villarreal, Pablo; Rodríguez-Cantano, Rocío; González-Lezana, Tomás; Prosmiti, Rita; Delgado-Barrio, Gerardo; Gianturco, Franco A

    2015-11-25

    We present variational calculations on systems containing a few boson helium atoms attached to electronically excited atomic and molecular helium anions He*⁻ and He₂*⁻ and characterize their structures and energetics. Previously reported high-level ab initio results [Huber, S. E.; Mauracher, A. Mol. Phys. 2014, 112, 794] to describe the interactions between excited (metastable) anions and a neutral He atom have been employed. For the case of the atomic species He*⁻, the corresponding interaction with He suggests large anharmonicity effects due to the presence of a deep well of ∼17,500 cm⁻¹ at short distances, together with a more external shallow secondary well of ∼4 cm⁻¹, both supporting bound levels. Moreover, when a sum of pairwise interactions is assumed to describe the full PES corresponding to the presence of several neutral He atoms, geometrical constraints already predict the complete solvation of the anionic impurity by six helium atoms, giving rise to a bipyramidal structure. In turn, for the anisotropic weak interaction He-He₂*⁻, where the anionic dimer is considered as a rigid rotor, the obtained structures show the tendency of the helium atoms to pack themselves together and largely far away from the dopant, thereby confirming the heliophobic character of He₂*⁻.

  20. A Desire for Growth: Online Full-Time Faculty's Perceptions of Evaluation Processes

    Directory of Open Access Journals (Sweden)

    Meredith DeCosta

    2016-07-01

    Full Text Available College and universities evaluate the teaching performance of faculty members in a variety of ways. Benefits to effective faculty evaluation include advancing the scholarship of teaching and learning, as well as improving the functionality and innovation of courses, curriculum, departments, and ultimately the broader community (Boyer, 1990; Glassick, Huber, & Maeroff, 1997. While there is ample research related to the evaluation of faculty in traditional settings, there have been fewer studies examining online faculty members’ perceptions of evaluation processes. Further, due to the growth of online education, the existing evaluation scales, including those used in traditional settings, have been called into question (Berk, 2013; Hathorn & Hathorn, 2010; Rothman, Romeo, Brennan, & Mitchell, 2011. This qualitative study examines one university’s online full-time faculty and their perceptions of the tools and processes used to evaluate their teaching. Through a systematic qualitative content analysis of survey data, findings indicate that online faculty members have a desire to grow as instructors, focusing little on modality or task-oriented expectations as a means for growth. Participants expressed an interest in holistic, descriptive evaluation feedback by a range of stakeholders, particularly those with content knowledge. Study findings have implications for administrators and other stakeholders related to online full-time faculty, including the processes and documents through which they are evaluated.

  1. Testing exclusion restrictions and additive separability in sample selection models

    DEFF Research Database (Denmark)

    Huber, Martin; Mellace, Giovanni

    2014-01-01

    Standard sample selection models with non-randomly censored outcomes assume (i) an exclusion restriction (i.e., a variable affecting selection, but not the outcome) and (ii) additive separability of the errors in the selection process. This paper proposes tests for the joint satisfaction of these......Standard sample selection models with non-randomly censored outcomes assume (i) an exclusion restriction (i.e., a variable affecting selection, but not the outcome) and (ii) additive separability of the errors in the selection process. This paper proposes tests for the joint satisfaction...... of these assumptions by applying the approach of Huber and Mellace (Testing instrument validity for LATE identification based on inequality moment constraints, 2011) (for testing instrument validity under treatment endogeneity) to the sample selection framework. We show that the exclusion restriction and additive...... separability imply two testable inequality constraints that come from both point identifying and bounding the outcome distribution of the subpopulation that is always selected/observed. We apply the tests to two variables for which the exclusion restriction is frequently invoked in female wage regressions: non...

  2. A note on class of traveling wave solutions of a non-linear third order system generated by Lie's approach

    International Nuclear Information System (INIS)

    Huber, Alfred

    2007-01-01

    In this paper, Lie's method is used to calculate solutions of a third order non-linear system of partial differential equations (nPDE). In our previous paper [Huber A. Appl Math Comput 2005;166/2:464], we have applied the tanh-method to generate solutions, in this case special class of solutions in form of traveling wave results (single soliton solutions as well as class of irregular solutions). Therefore, general families of solutions are of basic interest. Moreover, a complete characterization of the group properties is given. We determine the Lie point symmetry vector fields and calculate similarity 'ansaetze' for the first time. Further, we also derive a few non-linear transformations and some similarity solutions are obtained. The main purpose for the application of Lie's method is of course the fact that we are able to calculate class of general solutions which do not underlie such strong restrictions as in the case of traveling wave 'ansaetze'. Otherwise, it is necessary to perform a group analysis in order to improve the solution manifold by an alternative way. Moreover, a criterion for the integrability via the Painleve-conjecture is given and further, families of solutions in term of elliptic functions are derived via Lie's approach for the first time. Although no extensive studies are known up to this time a physical background of the considered system cannot exclude in future

  3. Classifying protein-protein interaction articles using word and syntactic features.

    Science.gov (United States)

    Kim, Sun; Wilbur, W John

    2011-10-03

    Identifying protein-protein interactions (PPIs) from literature is an important step in mining the function of individual proteins as well as their biological network. Since it is known that PPIs have distinctive patterns in text, machine learning approaches have been successfully applied to mine these patterns. However, the complex nature of PPI description makes the extraction process difficult. Our approach utilizes both word and syntactic features to effectively capture PPI patterns from biomedical literature. The proposed method automatically identifies gene names by a Priority Model, then extracts grammar relations using a dependency parser. A large margin classifier with Huber loss function learns from the extracted features, and unknown articles are predicted using this data-driven model. For the BioCreative III ACT evaluation, our official runs were ranked in top positions by obtaining maximum 89.15% accuracy, 61.42% F1 score, 0.55306 MCC score, and 67.98% AUC iP/R score. Even though problems still remain, utilizing syntactic information for article-level filtering helps improve PPI ranking performance. The proposed system is a revision of previously developed algorithms in our group for the ACT evaluation. Our approach is valuable in showing how to use grammatical relations for PPI article filtering, in particular, with a limited training corpus. While current performance is far from satisfactory as an annotation tool, it is already useful for a PPI article search engine since users are mainly focused on highly-ranked results.

  4. Analysis of Shear Flexible Layered Isotropic and Composite Shells by ‘EPSA’

    Directory of Open Access Journals (Sweden)

    Pawel Woelke

    2012-01-01

    Full Text Available We present a simple and efficient method for the analysis of shear flexible isotropic and orthotropic composite shells. Classical thin shell constitutive equations used in the explicit finite element code EPSA to model homogenous isotropic shells using "through-the-thickness-integration" and layered orthotropic composite shells [1–3,5] are modified to account for transverse shear deformation. This effect is important in the analysis of thick plates and shells as well as composite laminates, where interlaminar effects matter. Transverse shear stresses are calculated using a linear normal strain distribution, where first the shear forces are calculated and then the stresses are calculated by means of the generalized section properties, i.e., first and second moments of area. The formulation is a generalization of the analytical method of analyzing composite beams. It is simple and computationally inexpensive, and it yields accurate results without employing higher order displacement interpolations. In the case of isotropic shells, the transverse shear stresses are distributed parabolically, based on the assumption of linear normal strain distribution through the thickness and on application of the quadratic shape function to transverse shear strains. The transverse shear stresses are included in the elastic-perfectly plastic yield function of the Huber-Mises-Hencky type.

  5. Nonlinear regularization path for quadratic loss support vector machines.

    Science.gov (United States)

    Karasuyama, Masayuki; Takeuchi, Ichiro

    2011-10-01

    Regularization path algorithms have been proposed to deal with model selection problem in several machine learning approaches. These algorithms allow computation of the entire path of solutions for every value of regularization parameter using the fact that their solution paths have piecewise linear form. In this paper, we extend the applicability of regularization path algorithm to a class of learning machines that have quadratic loss and quadratic penalty term. This class contains several important learning machines such as squared hinge loss support vector machine (SVM) and modified Huber loss SVM. We first show that the solution paths of this class of learning machines have piecewise nonlinear form, and piecewise segments between two breakpoints are characterized by a class of rational functions. Then we develop an algorithm that can efficiently follow the piecewise nonlinear path by solving these rational equations. To solve these rational equations, we use rational approximation technique with quadratic convergence rate, and thus, our algorithm can follow the nonlinear path much more precisely than existing approaches such as predictor-corrector type nonlinear-path approximation. We show the algorithm performance on some artificial and real data sets. © 2011 IEEE

  6. Spontaneous emergence, imitation and spread of alternative foraging techniques among groups of vervet monkeys.

    Directory of Open Access Journals (Sweden)

    Erica van de Waal

    Full Text Available Animal social learning has become a subject of broad interest, but demonstrations of bodily imitation in animals remain rare. Based on Voelkl and Huber's study of imitation by marmosets, we tested four groups of semi-captive vervet monkeys presented with food in modified film canisters ("aethipops'. One individual was trained to take the tops off canisters in each group and demonstrated five openings to them. In three groups these models used their mouth to remove the lid, but in one of the groups the model also spontaneously pulled ropes on a canister to open it. In the last group the model preferred to remove the lid with her hands. Following these spontaneous differentiations of foraging techniques in the models, we observed the techniques used by the other group members to open the canisters. We found that mouth opening was the most common technique overall, but the rope and hands methods were used significantly more in groups they were demonstrated in than in groups where they were not. Our results show bodily matching that is conventionally described as imitation. We discuss the relevance of these findings to discoveries about mirror neurons, and implications of the identity of the model for social transmission.

  7. European National Society Cardiovascular Journals: Background, rationale and mission statement of the 'Editors' Club' (Task Force of the European Society of Cardiology).

    Science.gov (United States)

    Alfonso, F; Ambrosio, G; Pinto, F J; van der Wall, E E

    2008-06-01

    Anesti Kondili MD, Djamaleddine Nibouche MD, Karlen Adamyan MD, Kurt Huber MD, Hugo Ector MD, Izet Masic MD, Rumiana Tarnovska MD, Mario Ivanusa MD, Vladimír Stane k MD, Jørgen Videbaek MD, Mohamed Hamed MD, Alexandras Laucevicius MD, Pirjo Mustonen MD, Jean-Yves Artigou MD, Ariel Cohen MD, Mamanti Rogava MD, Michael Böhm MD, Eckart Fleck MD, Gerd Heusch MD, Rainer Klawki MD, Panos Vardas MD, Christodoulos Stefanadis MD, József Tenczer MD, Massimo Chiariello MD, Aleksandras Laucevicius MD, Joseph Elias MD, Halima Benjelloun MD, Olaf Rødevand MD, Piotr Kul/akowski MD, Edvard Apetrei MD, Victor A. Lusov MD, Rafael G. Oganov MD, Velibor Obradovic MD, Gabriel Kamensky MD, Miran F. Kenda MD, Christer Höglund MD, Thomas F. Lüscher MD, René Lerch MD, Moufid Jokhadar MD, Habib Haouala MD, Vedat Sansoy MD, Valentin Shumakov MD, Adam Timmis MD. (European National Society Cardiovascular Journals Editors, see Appendix for complete affiliations).

  8. A mesomechanical analysis of the deformation and fracture in polycrystalline materials with ceramic porous coatings

    Science.gov (United States)

    Balokhonov, R. R.; Zinoviev, A. V.; Romanova, V. A.; Batukhtina, E. E.

    2015-10-01

    The special features inherent in the mesoscale mechanical behavior of a porous ceramic coating-steel substrate composite are investigated. Microstructure of the coated material is accounted for explicitly as initial conditions of a plane strain dynamic boundary-value problem solved by the finite difference method. Using a mechanical analogy method, a procedure for generating a uniform curvilinear finite difference computational mesh is developed to provide a more accurate description of the complex grain boundary geometry. A modified algorithm for generation of polycrystalline microstructure of the substrate is designed on the basis of the cellular automata method. The constitutive equations for a steel matrix incorporate an elastic-plastic model for a material subjected to isotropic hardening. The Hall-Petch relation is used to account for the effect of the grain size on the yield stress and strain hardening history. A brittle fracture model for a ceramic coating relying on the Huber criterion is employed. The model allows for crack nucleation in the regions of triaxial tension. The complex inhomogeneous stress and plastic strain patterns are shown to be due to the presence of interfaces of three types: coating-substrate interface, grain boundaries, and pore surfaces.

  9. Spatial and temporal arrival patterns of Madagascar's vertebrate fauna explained by distance, ocean currents, and ancestor type

    Science.gov (United States)

    Samonds, Karen E.; Godfrey, Laurie R.; Ali, Jason R.; Goodman, Steven M.; Vences, Miguel; Sutherland, Michael R.; Irwin, Mitchell T.; Krause, David W.

    2012-01-01

    How, when, and from where Madagascar's vertebrates arrived on the island is poorly known, and a comprehensive explanation for the distribution of its organisms has yet to emerge. We begin to break that impasse by analyzing vertebrate arrival patterns implied by currently existing taxa. For each of 81 clades, we compiled arrival date, source, and ancestor type (obligate freshwater, terrestrial, facultative swimmer, or volant). We analyzed changes in arrival rates, with and without adjusting for clade extinction. Probability of successful transoceanic dispersal is negatively correlated with distance traveled and influenced by ocean currents and ancestor type. Obligate rafters show a decrease in probability of successful transoceanic dispersal from the Paleocene onward, reaching the lowest levels after the mid-Miocene. This finding is consistent with a paleoceanographic model [Ali JR, Huber M (2010) Nature 463:653–656] that predicts Early Cenozoic surface currents periodically conducive to rafting or swimming from Africa, followed by a reconfiguration to present-day flow 15–20 million years ago that significantly diminished the ability for transoceanic dispersal to Madagascar from the adjacent mainland. PMID:22431643

  10. Interpretation of hydraulic tests performed at a carbonate rock site for CO2 storage

    Science.gov (United States)

    María Gómez Castro, Berta; Fernández López, Sheila; Carrera, Jesús; de Simone, Silvia; Martínez, Lurdes; Roetting, Tobias; Soler, Joaquim; Ortiz, Gema; de Dios, Carlos; Huber, Christophe

    2014-05-01

    Interpretation of hydraulic tests performed at a carbonate rock site for CO2 storage Berta Gómez, Sheila Fernández, Tobias Roetting, Lurdes Martínez, Silvia de Simone, Joaquim Soler, Jesus Carrera, Gema Ortiz, Christophe Huber, Carlos de Dios Proper design of CO2 geological storage facilities requires knowledge of the reservoir hydraulic parameters. Specifically, permeability controls the flux of CO2, the rate at which it dissolves, local and regional pressure buildup and the likelihood of induced seismicity. Permeability is obtained from hydraulic tests, which may yield local permeability, which controls injectivity, and large scale permeability, which controls pressure buildup at the large scale. If pressure response measurements are obtained at different elevations, hydraulic tests may also yield vertical permeability, which controls the rate at which CO2 dissolves. The objective of this work is to discuss the interpretation of hydraulic tests at deep reservoirs and the conditions under which these permeabilities can be obtained. To achieve this objective, we have built a radially symmetric model, including a skin and radial as well as vertical heterogeneity. We use this model to simulate hydraulic tests with increasing degrees of complexity about the medium response. We start by assuming Darcy flow, then add coupled mechanical effects (fractures opening) and, finally, we add thermal effects. We discuss how these affect the conventional interpretation of the tests and how to identify their presence. We apply these findings to the interpretation of hydraulic tests at Hontomin.

  11. The Jump Set under Geometric Regularization. Part 1: Basic Technique and First-Order Denoising

    KAUST Repository

    Valkonen, Tuomo

    2015-01-01

    © 2015 Society for Industrial and Applied Mathematics. Let u ∈ BV(Ω) solve the total variation (TV) denoising problem with L2-squared fidelity and data f. Caselles, Chambolle, and Novaga [Multiscale Model. Simul., 6 (2008), pp. 879-894] have shown the containment Hm-1 (Ju \\\\Jf) = 0 of the jump set Ju of u in that of f. Their proof unfortunately depends heavily on the co-area formula, as do many results in this area, and as such is not directly extensible to higher-order, curvature-based, and other advanced geometric regularizers, such as total generalized variation and Euler\\'s elastica. These have received increased attention in recent times due to their better practical regularization properties compared to conventional TV or wavelets. We prove analogous jump set containment properties for a general class of regularizers. We do this with novel Lipschitz transformation techniques and do not require the co-area formula. In the present Part 1 we demonstrate the general technique on first-order regularizers, while in Part 2 we will extend it to higher-order regularizers. In particular, we concentrate in this part on TV and, as a novelty, Huber-regularized TV. We also demonstrate that the technique would apply to nonconvex TV models as well as the Perona-Malik anisotropic diffusion, if these approaches were well-posed to begin with.

  12. Picosecond excitation transport in disordered systems

    International Nuclear Information System (INIS)

    Hart, D.E.

    1987-11-01

    Time-resolved fluorescence decay profiles are used to study excitation transport in 2- and 3-dimensional disordered systems. Time-correlated single photon counting detection is used to collect the fluorescence depolarization data. The high signal-to-noise ratios afforded by this technique makes it possible to critically examine current theories of excitation transport. Care has been taken to eliminate or account for the experimental artifacts common to this type of study. Solutions of 3,3'-diethyloxadicarbocyanine iodide (DODCI) in glycerol serve as a radomly distributed array of energy donors in 3-dimensions. A very thin sample cell (/approximately/ 2 μm) is used to minimize the effects of fluorescence self-absorption on the decay kinetics. Evidence of a dynamic shift of the fluorescence spectrum of DODCI in glycerol due to solvent reorganization is presented. The effects of excitation trapping on the decay profiles is minimized in the data analysis procedure. The 3-body theory of Gochanour, Andersen, and Fayer (GAF) and the far less complex 2-particle analytic theory of Huber, Hamilton, and Barnett yield indistinguishable fits to the data over the wide dynamic range of concentrations and decay times studied

  13. Neutron Tomography of a Fuel Cell: Statistical Learning Implementation of a Penalized Likelihood Method

    Science.gov (United States)

    Coakley, Kevin J.; Vecchia, Dominic F.; Hussey, Daniel S.; Jacobson, David L.

    2013-10-01

    At the NIST Neutron Imaging Facility, we collect neutron projection data for both the dry and wet states of a Proton-Exchange-Membrane (PEM) fuel cell. Transmitted thermal neutrons captured in a scintillator doped with lithium-6 produce scintillation light that is detected by an amorphous silicon detector. Based on joint analysis of the dry and wet state projection data, we reconstruct a residual neutron attenuation image with a Penalized Likelihood method with an edge-preserving Huber penalty function that has two parameters that control how well jumps in the reconstruction are preserved and how well noisy fluctuations are smoothed out. The choice of these parameters greatly influences the resulting reconstruction. We present a data-driven method that objectively selects these parameters, and study its performance for both simulated and experimental data. Before reconstruction, we transform the projection data so that the variance-to-mean ratio is approximately one. For both simulated and measured projection data, the Penalized Likelihood method reconstruction is visually sharper than a reconstruction yielded by a standard Filtered Back Projection method. In an idealized simulation experiment, we demonstrate that the cross validation procedure selects regularization parameters that yield a reconstruction that is nearly optimal according to a root-mean-square prediction error criterion.

  14. Modelling and Analysis of Phase Transformations and Stresses in Laser Welding Process / Modelowanie I Analiza Przemian Fazowych I Naprężeń W Procesie Spawania Laserowego

    Directory of Open Access Journals (Sweden)

    Piekarska W.

    2015-12-01

    Full Text Available The work concerns the numerical modelling of structural composition and stress state in steel elements welded by a laser beam. The temperature field in butt welded joint is obtained from the solution of heat transfer equation with convective term. The heat source model is developed. Latent heat of solid-liquid and liquid-gas transformations as well as latent heats of phase transformations in solid state are taken into account in the algorithm of thermal phenomena. The kinetics of phase transformations in the solid state and volume fractions of formed structures are determined using classical formulas as well as Continuous-Heating-Transformation (CHT diagram and Continuous-Cooling-Transformation (CCT diagram during welding. Models of phase transformations take into account the influence of thermal cycle parameters on the kinetics of phase transformations during welding. Temporary and residual stress is obtained on the basis of the solution of mechanical equilibrium equations in a rate form. Plastic strain is determined using non-isothermal plastic flow with isotropic reinforcement, obeying Huber-Misses plasticity condition. In addition to thermal and plastic strains, the model takes into account structural strain and transformation plasticity. Changing with temperature and structural composition thermophysical parameters are included into constitutive relations. Results of the prediction of structural composition and stress state in laser butt weld joint are presented.

  15. POLYPHENOLS AND ANTIOXIDANT ACTIVITY OF FOUR FRUITS NATIVE TO THE COAST OF CEARA UNDER DIFFERENT MATURATION STAGES

    Directory of Open Access Journals (Sweden)

    NIGÉRIA PEREIRA GONÇALVES

    Full Text Available ABSTRACT This study aimed to quantify polyphenolic compounds and antioxidant activity of four fruits native to the coast of Ceara under different maturation stages aiming their use for a healthier diet. Myrtle (Eugenia punicifolia (Kunth DC. fruits were collected at the Botanical State Park of Ceara, in Caucaia-CE and guajiru (Chrisobalanus icaco L., manipuça (Mouriri cearensis Huber and murici-pitanga (Byrsonima gardneriana A. Juss. fruits were collected at the Botanical Garden of São Gonçalo, São Gonçalo do Amarante-CE. Fruits were collected and transported to the Laboratory of Plant Ecophysiology, being characterized, processed and frozen for chemical assessments at the Laboratory of Physiology and Postharvest Technology - Embrapa Agroindústria Tropical: polyphenolic compounds and total antioxidant activity. The ESTAT software was used for statistical analyses. The polyphenolic content had the highest and the lowest value for guajiru fruits with 480.73 and 10.90 mg/100 g, respectively and total antioxidant activity, the highest value was found for manipuça fruits, with 42.99 µM of Trolox/g of pulp and the lowest value for guajiru fruits, with 1.45 µM of Trolox/g of pulp. There was a significant correlation between polyphenolic content and total antioxidant activity obtained for guajiru fruits, which showed high correlation coefficient, R = -0.95 (P < 0.05.

  16. Control and function of the homeostatic sleep response by adenosine A1 receptors.

    Science.gov (United States)

    Bjorness, Theresa E; Kelly, Christine L; Gao, Tianshu; Poffenberger, Virginia; Greene, Robert W

    2009-02-04

    During sleep, the mammalian CNS undergoes widespread, synchronized slow-wave activity (SWA) that directly varies with previous waking duration (Borbély, 1982; Dijk et al., 1990). When sleep is restricted, an enhanced SWA response follows in the next sleep period. The enhancement of SWA is associated with improved cognitive performance (Huber et al., 2004), but it is unclear either how the SWA is enhanced or whether SWA is needed to maintain normal cognitive performance. A conditional, CNS knock-out of the adenosine receptor, AdoA(1)R gene, shows selective attenuation of the SWA rebound response to restricted sleep, but sleep duration is not affected. During sleep restriction, wild phenotype animals express a rebound SWA response and maintain cognitive performance in a working memory task. However, the knock-out animals not only show a reduced rebound SWA response but they also fail to maintain normal cognitive function, although this function is normal when sleep is not restricted. Thus, AdoA(1)R activation is needed for normal rebound SWA, and when the SWA rebound is reduced, there is a failure to maintain working memory function, suggesting a functional role for SWA homeostasis.

  17. Robust CDMA multiuser detection using a neural-network approach.

    Science.gov (United States)

    Chuah, Teong Chee; Sharif, B S; Hinton, O R

    2002-01-01

    Abstract-Recently, a robust version of the linear decorrelating detector (LDD) based on the Huber's M-estimation technique has been proposed. In this paper, we first demonstrate the use of a three-layer recurrent neural network (RNN) to implement the LDD without requiring matrix inversion. The key idea is based on minimizing an appropriate computational energy function iteratively. Second, it will be shown that the M-decorrelating detector (MDD) can be implemented by simply incorporating sigmoidal neurons in the first layer of the RNN. A proof of the redundancy of the matrix inversion process is provided and the computational saving in realistic network is highlighted. Third, we illustrate how further performance gain could be achieved for the subspace-based blind MDD by using robust estimates of the signal subspace components in the initial stage. The impulsive noise is modeled using non-Gaussian alpha-stable distributions, which do not include a Gaussian component but facilitate the use of the recently proposed geometric signal-to-noise ratio (G-SNR). The characteristics and performance of the proposed neural-network detectors are investigated by computer simulation.

  18. Maximum Correntropy Criterion Kalman Filter for α-Jerk Tracking Model with Non-Gaussian Noise

    Directory of Open Access Journals (Sweden)

    Bowen Hou

    2017-11-01

    Full Text Available As one of the most critical issues for target track, α -jerk model is an effective maneuver target track model. Non-Gaussian noises always exist in the track process, which usually lead to inconsistency and divergence of the track filter. A novel Kalman filter is derived and applied on α -jerk tracking model to handle non-Gaussian noise. The weighted least square solution is presented and the standard Kalman filter is deduced firstly. A novel Kalman filter with the weighted least square based on the maximum correntropy criterion is deduced. The robustness of the maximum correntropy criterion is also analyzed with the influence function and compared with the Huber-based filter, and, moreover, the kernel size of Gaussian kernel plays an important role in the filter algorithm. A new adaptive kernel method is proposed in this paper to adjust the parameter in real time. Finally, simulation results indicate the validity and the efficiency of the proposed filter. The comparison study shows that the proposed filter can significantly reduce the noise influence for α -jerk model.

  19. Recent geomagnetic secular variation from Swarm and ground observatories as estimated in the CHAOS-6 geomagnetic field model

    DEFF Research Database (Denmark)

    Finlay, Chris; Olsen, Nils; Kotsiaros, Stavros

    2016-01-01

    We use more than 2 years of magnetic data from the Swarm mission, and monthly means from 160 ground observatories as available in March 2016, to update the CHAOS time-dependent geomagnetic field model. The new model, CHAOS-6, provides information on time variations of the core-generated part......, jets at low latitudes, for example close to 40 degrees W, that may be responsible for localized SA oscillations. In addition to scalar data from Orsted, CHAMP, SAC-C and Swarm, and vector data from Orsted, CHAMP and Swarm, CHAOS-6 benefits from the inclusion of along-track differences of scalar...... and vector field data from both CHAMP and the three Swarm satellites, as well as east-west differences between the lower pair of Swarm satellites, Alpha and Charlie. Moreover, ground observatory SV estimates are fit to a Huber-weighted rms level of 3.1 nT/year for the eastward components and 3.8 and 3.7 n...

  20. First modules of ATLAS's great accordion

    CERN Multimedia

    2001-01-01

    The first CERN-built module of the barrel section of ATLAS's electromagnetic calorimeter has just been completed. This is the second in a series of 32 modules that will make up the final detector. These accordion-shaped structures will give precise measurements of the energy of particles produced in the LHC. The first CERN-built module of the barrel section of ATLAS's electromagnetic calorimeter nearing completion. Behind the module, from left to right: Ralf Huber, Andreas Bies and Jorgen Beck Hansen. In front of the module, from left to right: Philippe Lançon and Edward Wood. The builders of the ATLAS electromagnetic calorimeter are masters in the art of folding! To find out why, just take a look inside Hall 184, where the first CERN-built module of ATLAS's electromagnetic calorimeter has just been completed. It is the second in a long series, the first having been completed at the Saclay Laboratory of France's Commissariat à l'Energie Atomique just a few weeks ago. Thirty more remain...

  1. A quantitative evaluation of the iron-sulfur world and its relevance to life's origins

    Science.gov (United States)

    Ross, D.S.

    2008-01-01

    The significance of Wa??chtersha??user's iron-sulfur world to the origin of life and the limits to its notional autocatalytic cycles are examined in kinetic simulations of the chain polymerization sequence primitive materials ??? amino acids ??? oligomers The simulations were run for the formation of all oligomers up to the 20-mer over a 1 Gy interval from the end of the period of heavy bombardment, during which period life emerged. Upper-limit rate constant estimates developed from the studies of Huber and Wa??chtersha?? user were employed. The simulations showed that oligomer production consistent with life's start within that interval emerges only with an autocatalyst exhibiting a catalytic proficiency comparable to that of contemporary enzymes. The simulations, moreover, ignored likely thermodynamic and statistical burdens which, if included, would have led to the need for catalytic capacities well in excess of those in present-day enzymes. Prebiotic oligomers with such levels of activity are clearly not likely, and it is apparent that the iron-sulfur scheme could not have played a role in life's beginnings. ?? 2008 Mary Ann Liebert, Inc.

  2. The invasion of five alien species in the Delta do Parnaíba Environmental Protection Area, Northeastern Brazil

    Directory of Open Access Journals (Sweden)

    Daniel Loebmann

    2010-09-01

    Full Text Available Marine biological invasions have been regarded as one of the major causes of native biodiversity loss, with shipping and aquaculture being the leading contributors for the introductions of alien species in aquatic ecosystems. In the present study, five aquatic alien species (one mollusk, three crustaceans and one fish species were detected during dives, shore searches and from the fisheries on the coast of the Delta do Parnaíba Environmental Protection Area, in the States of Piauí and Maranhão, Northeastern Brazil. The species were the bicolor purse-oyster Isognomon bicolor, the whiteleg shrimp Litopenaeus vannamei, the giant river prawn Macrobrachium rosenbergii, the Indo-Pacific swimming crab Charybdis hellerii and, the muzzled blenny Omobranchus punctatus. Ballast water (I. bicolor, C. hellerii, and O. punctatus and aquaculture activities (L. vannamei and M. rosenbergii in adjacent areas are the most likely vectors of introduction. All exotic species found have potential impact risks to the environment because they are able to compete against native species for resources (food and habitat. Isognomon bicolor share the same habitat and food items with the native bivalve species of mussels and barnacles. Litopenaeus vannamei share the same habitat and food items with the native penaeids such as the pinkspot shrimp Farfantepenaeus brasiliensis, the Southern brown shrimp Farfantepenaeus subtilis, and the Southern white shrimp Litopenaeus schmitti, and in the past few years L. vannamei was responsible for a viral epidemics in the cultivation tanks that could be transmitted to native penaeid shrimps. Charybdis hellerii is also able to cause impacts on the local fisheries as the species can decrease the populations of native portunid crabs which are commercialized in the studied region. Macrobrachium rosenbergii may be sharing natural resources with the Amazon River prawn Macrobrachium amazonicum. Omobranchus punctatus shares habit with the native

  3. The invasion of five alien species in the Delta do Parnaíba Environmental Protection Area, Northeastern Brazil.

    Science.gov (United States)

    Loebmann, Daniel; Mai, Ana Cecília G; Lee, James T

    2010-09-01

    Marine biological invasions have been regarded as one of the major causes of native biodiversity loss, with shipping and aquaculture being the leading contributors for the introductions of alien species in aquatic ecosystems. In the present study, five aquatic alien species (one mollusk, three crustaceans and one fish species) were detected during dives, shore searches and from the fisheries on the coast of the Delta do Parnaíba Environmental Protection Area, in the States of Piauí and Maranhão, Northeastern Brazil. The species were the bicolor purse-oyster Isognomon bicolor, the whiteleg shrimp Litopenaeus vannamei, the giant river prawn Macrobrachium rosenbergii, the Indo-Pacific swimming crab Charybdis hellerii and, the muzzled blenny Omobranchus punctatus. Ballast water (I. bicolor, C. hellerii, and O. punctatus) and aquaculture activities (L. vannamei and M. rosenbergii) in adjacent areas are the most likely vectors of introduction. All exotic species found have potential impact risks to the environment because they are able to compete against native species for resources (food and habitat). Isognomon bicolor share the same habitat and food items with the native bivalve species of mussels and barnacles. Litopenaeus vannamei share the same habitat and food items with the native penaeids such as the pinkspot shrimp Farfantepenaeus brasiliensis, the Southern brown shrimp Farfantepenaeus subtilis, and the Southern white shrimp Litopenaeus schmitti, and in the past few years L. vannamei was responsible for a viral epidemics in the cultivation tanks that could be transmitted to native penaeid shrimps. Charybdis hellerii is also able to cause impacts on the local fisheries as the species can decrease the populations of native portunid crabs which are commercialized in the studied region. Macrobrachium rosenbergii may be sharing natural resources with the Amazon River prawn Macrobrachium amazonicum. Omobranchus punctatus shares habit with the native redlip blenny

  4. PESCA E PROCEDIMENTOS DE CAPTURA DO CAMARÃO-DA-AMAZÔNIA A JUSANTE DE UMA USINA HIDRELÉTRICA NA AMAZÔNIA BRASILEIRA

    Directory of Open Access Journals (Sweden)

    Maria Vera Lúcia Ferreira de Araújo

    2014-08-01

    Full Text Available O estudo descreve a pesca e os procedimentos de captura do camarão-da-amazônia, na área a jusante da Usina Hidrelétrica de Tucuruí. Os dados foram obtidos por meio de observações de campo e entrevistas individuais auxiliadas por formulários semiestruturados aplicados junto aos pescadores, no período de setembro a novembro de 2011 e setembro de 2012. O camarão-da-amazônia é capturado por diversas artes de pesca, mas o matapi se destaca como o principal apetrecho. Os recursos usados na aquisição das armadilhas e outros insumos derivam da renda familiar. Todo o processo produtivo, como a confecção dos matapis, preparação das iscas, métodos de captura e estocagem da produção, é praticado de forma artesanal com base em métodos tradicionais, modificados, no decorrer dos anos. Os procedimentos de pesca são diversificados, algumas etapas são comuns entre os municípios a jusante e outras etapas bem específicas. No entanto, a captura do recurso pesqueiro está atrelada ao amplo conhecimento que os pescadores possuem sobre o ambiente em que vivem. Dentre os fatores ambientais que conduzem o ofício, estão as estações do ano e as marés que influenciam diretamente na escolha do local de pesca, o qual varia entre os igarapés, as margens dos rios e as praias. Estudos da seletividade dos matapis, da densidade de estocagemdos viveiros e ações de educação ambiental irão fornecer subsídios importantes a sustentabilidade socioambiental da atividade pesqueira do camarão-da-amazônia na região. Palavras-chave: Macrobrachium amazonicum; matapi; saberes de pesca; pesca artesanal. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v4n2p102-112

  5. Padrões ecomorfológicos associados à dieta de Plagioscion squamosissimus (Perciformes, Scianidae em reservatório permanente, no Nordeste do Brasil

    Directory of Open Access Journals (Sweden)

    Valdir P. Ferreira Filho

    2014-06-01

    Full Text Available A alimentação de peixes e os padrões ecomorfológicos estão relacionados com vários fatores como ontogenia. O presente trabalho foi realizado a fim de testar a hipótese de que a dieta e os padrões ecomorfológicos apresentam correlações positivas entre os diferentes estágios de ontogenia de Plagioscion squamosissimus (Heckel, 1840, pois à medida que a espécie passa da fase jovem para adulta altera a sua alimentação e morfologia. A pescada foi escolhida por ser a espécie mais abundante no reservatório da Estação Ecológica de Tapacurá, Estado de Pernambuco. Os padrões ecomorfológicos foram avaliados e relacionados com a alimentação dos indivíduos capturados no reservatório no mês de abril de 2013. As medidas morfométricas foram retiradas de todos os indivíduos capturados e posteriormente recolhidos seus estômagos. Os peixes foram separados de acordo com a fase de desenvolvimento, juvenis e adultos. Também foram tomados seu peso total, comprimento padrão e aferidas onze medidas lineares, utilizadas para obter os índices que representam os atributos ecomorfológicos. Os itens alimentares foram identificados e separados até menor nível taxonômico possível, sendo o mais frequente o camarão Macrobrachium amazonicum (Heller, 1862. Foi possível observar que nos juvenis os itens ingeridos apresentavam maior amplitude no tamanho em comparação com os adultos. Dos dados morfométricos observa-se que os valores de largura da cabeça são maiores nos juvenis e os valores da altura do corpo são mais elevados nos adultos, sendo estes fatores importantes para determinar o tamanho da presa ingerida pelo peixe. Conclui-se que a espécie Plagioscion squamosissimus mostrou relação positiva entre a morfologia e alimentação ao longo do desenvolvimento ontogenético evidenciado pela variação de comprimento dos itens ingeridos entre juvenis e adultos, porém não houve distinção em relação ao alimento ingerido entre

  6. Culture-Bound Syndromes of a Brazilian Amazon Riverine population: Tentative correspondence between traditional and conventional medicine terms and possible ethnopharmacological implications.

    Science.gov (United States)

    Pagani, E; Santos, J de F L; Rodrigues, E

    2017-05-05

    hypothetical correlations between CBS as described by the riverine population studied and some "etic" terms. The main importance of this is to help the proposition of target-oriented pharmacological studies of the natural resources used by these communities. Accordingly, the following plants are suggested to be submitted to further studies for antidepressant and anxiolytic activities: Siparuna guianensis, Mansoa alliacea, Leucas martinicensis, Petiveria alliacea, Annona montana and Alpinia nutans; for anti-seizure activity: Protium amazonicum, Protium aracouchini and Protium heptaphyllum; finally for antispasmodic activity: Leucas martinicensis. Copyright © 2017 Elsevier Ireland Ltd. All rights reserved.

  7. Balancing benefits and costs in a 4°C world: the need for and challenges of natural-social science dialogue

    Science.gov (United States)

    Kopp, R. E.

    2012-12-01

    and Huber, 2010). (4) Characterizing the economic impacts of climate surprises and other hard-to-model climatic events: Complex climate models are tuned to perform well against historical observations, but such tuning leads to undersampling of the tails of probability distribution. Characterizing these tails is critical for risk assessment. Non-model-based approaches (e.g., paleoclimatic studies) can help in assessing the likelihoods of physical climate events that are either hard to model or vary greatly between models (e.g., ice sheet melt, ENSO strengthening, AMOC slowdown, Amazon die-off, etc.) With the exception of sea level change associated with ice sheet melt, the social science literature on the impacts of these events is limited or non-existent. Sherwood, S.C., Huber, M., 2010. Proc. Natl. Acad. Sci. 107, 9552 -9555.

  8. LOTT RANCH 3D PROJECT

    International Nuclear Information System (INIS)

    Larry Lawrence; Bruce Miller

    2004-01-01

    The Lott Ranch 3D seismic prospect located in Garza County, Texas is a project initiated in September of 1991 by the J.M. Huber Corp., a petroleum exploration and production company. By today's standards the 126 square mile project does not seem monumental, however at the time it was conceived it was the most intensive land 3D project ever attempted. Acquisition began in September of 1991 utilizing GEO-SEISMIC, INC., a seismic data contractor. The field parameters were selected by J.M. Huber, and were of a radical design. The recording instruments used were GeoCor IV amplifiers designed by Geosystems Inc., which record the data in signed bit format. It would not have been practical, if not impossible, to have processed the entire raw volume with the tools available at that time. The end result was a dataset that was thought to have little utility due to difficulties in processing the field data. In 1997, Yates Energy Corp. located in Roswell, New Mexico, formed a partnership to further develop the project. Through discussions and meetings with Pinnacle Seismic, it was determined that the original Lott Ranch 3D volume could be vastly improved upon reprocessing. Pinnacle Seismic had shown the viability of improving field-summed signed bit data on smaller 2D and 3D projects. Yates contracted Pinnacle Seismic Ltd. to perform the reprocessing. This project was initiated with high resolution being a priority. Much of the potential resolution was lost through the initial summing of the field data. Modern computers that are now being utilized have tremendous speed and storage capacities that were cost prohibitive when this data was initially processed. Software updates and capabilities offer a variety of quality control and statics resolution, which are pertinent to the Lott Ranch project. The reprocessing effort was very successful. The resulting processed data-set was then interpreted using modern PC-based interpretation and mapping software. Production data, log data

  9. Análise do Desenvolvimento da Tecnologia de FCC sob a Ótica das Teorias de Aprendizagem Organizacional e Dinâmica da Inovação

    Directory of Open Access Journals (Sweden)

    Adelaide M. de Souza Antunes

    2008-01-01

    Full Text Available É apresentado o histórico do desenvolvimento da tecnologia de Craqueamento Catalítico Fluido pela Petrobras, cuja trajetória de construção de conhecimento compreendeu quatro fases: aprendizado, aquisição, consolidação e domínio. As primeiras etapas da trajetória tecnológica, que compreendem as fases de aprendizado e aquisição, são analisadas segundo Modelos de Aprendizagem Organizacional consagrados, tais como os de Nevis, DiBella e Gould; Huber; e Senge, sendo verificado para qual desses modelos há uma aderência maior da trajetória de aprendizado da Petrobras. As etapas finais do processo, fase de consolidação e domínio, são analisadas sob a ótica dos Modelos de Dinâmica da Inovação. É feito um levantamento dos distintos modelos descritos na literatura: modelos lineares – ofertista e linear reverso; modelos complexos – terceira, quarta e quinta geração do processo de inovação, Kline e Rosenberg; Utterback; Kim; e Nonaka e Takeuchi. É analisada também a trajetória de evolução tecnológica de países em desenvolvimento, da operação à inovação, e verificado a qual modelo a trajetória de inovação tecnológica da Petrobras mostrou melhor adequação. São realçadas também algumas estratégias que contribuíram para o sucesso do desenvolvimento dessa tecnologia.The technological background of Petrobras in Fluid Catalytic Cracking area is shown, as well as its building knowledge pathway, which encompasses four phases: operational learning; acquisition; consolidation; and mastery. The first stages of this technological evolution route, the operational learning and the acquisition phases, were analyzed according to well known Organizational Learning Models, such as those of Nevis, DiBella and Gould; Huber; and Senge, being checked to which model the company learning pathway fits better. The final stages of the evolution process, the consolidation and the mastery phases, are analyzed from the point of

  10. Building positive nature awareness in pupils using the "Rainforest of the Austrians" in Costa Rica.

    Science.gov (United States)

    Aubrecht, Margit; Hölzl, Irmgard; Huber, Werner; Weissenhofer, Anton

    2013-04-01

    20 years ago, Michael Schnitzler founded the NGO "Rainforest of the Austrians" to help save one of the most diverse rainforests in Central America, the Esquinas rainforest on the Pacific coast of SW Costa Rica, from being destroyed through logging. In this abstract we present an interdisciplinary upper Austrian school project aiming at building positive awareness in pupils towards rainforest conservation by fund-raising to help purchase endangered forest areas. The acquired rainforest was donated to the Costa Rican government and became part of the National Park "Piedras Blancas". In the following, we present a chronology of events and actions of the school project. We started our rainforest project by face-to-face encounters, letting involved persons speak directly to the pupils. Dr. Huber, coordinator of the tropical rainforest station La Gamba in Costa Rica (www.lagamba.at), together with Dr. Weissenhofer, presented an introductory slide show about the "Rainforest of the Austrians". With rainforest images and sounds in their mind the pupils wrote "trips of a lifetime" stories, thus creating idyllic images of rainforest habitats. Following up on that, we visited the exhibition "Heliconia and Hummingbirds" at the Biology Center in Linz. Reports about the slide show and the exhibition followed. Tropical sites were compared by producing climate graphs of La Gamba, Costa Rica, and Manaus in Brazil. The global distribution and the decrease of rainforests were also analyzed. In biology lessons the symbiosis between plants and animals of the rainforest were worked out by searching the Internet. Flyers with profiles of rainforest animals were produced. We also discussed the ecotourism project "RICANCIE" in Ecuador using fact sheets. "RICANCIE" is a Spanish acronym standing for "Indigenous Community Network of the Upper Napo for Intercultural Exchange and Ecotourism". It was founded in 1993 aiming to improve the quality of life for some 200 indigenous Kichwa families

  11. Large Early Permian eruptive complexes in northern Saxony, Germany: Volcanic facies analysis and geochemical characterization

    Science.gov (United States)

    Hübner, Marcel; Breitkreuz, Christoph; Repstock, Alexander; Heuer, Franziska

    2017-04-01

    In the course of formation of extensional basins during the Early Permian a widespread volcanic activity led to the deposition of volcanic and volcanosedimentary units in Saxony (Walter 2006, Hoffmann et al. 2013). Situated east of Leipzig, the North Saxonian Volcanic Complex (NSVC) hosts two large caldera complexes, the Rochlitz and Wurzen Volcanic Systems, with diameters of 90 and 52 km, respectively. Volume estimates (> 1000 km3) qualify these as supereruptions according to Mason et al. (2004). In addition to the large caldera systems, the NSVC hosts several small pyroclastic flow deposits ranging from crystal-poor (e.g. Cannewitz and vitrophyric Ebersbach ignimbrites) to crystal-rich units (Wermsdorf and Dornreichenbach ignimbrites). Additionally rhyolitic lava and subvolcanic units are present. The Chemnitz basin (Schneider et al. 2012), located to the south of the NSVC, harbours caldera-outflow facies deposits of the Rochlitz eruption (Fischer 1991), i.e. the partially vitrophyric Planitz ignimbrite. The Rochlitz and Wurzen caldera-fill ignimbrites exhibit relatively high crystal contents with maxima up to 52 and 58 vol.-%, for corresponding 66 and 68 wt.-% SiO2. This is comparable with the 'monotonous intermediates' (Hildreth 1981) in the Cenozoic western USA investigated by Huber et al. (2012). In contrast, the Planitz ignimbrite in the Chemnitz basin reveals predominantly crystal-poor pyroclastics ( 70 analyses), and mineral geochemistry to reconstruct the eruption history and magma genesis of this large Late Paleozoic magmatic complex in Central Europe. Volcanic textures and geochemical trends indicate magma mingling and mixing to have been important during the formation of the Wurzen caldera system. Geothermometric and -barometric calculations based on composition of pyroxene and feldspar suggest deeply seated crustal magma chambers for the NSVC and the Planitz ignimbrite. Fischer, F. (1991): Das Rotliegende des ostthüringisch-westsächsischen Raumes

  12. Áreas prioritárias na Amazônia para conservação dos recursos genéticos de espécies florestais nativas: fase preliminar Priority areas for genetic resources conservation of native Forest Species: preliminary phase

    Directory of Open Access Journals (Sweden)

    Angela Maria Conte Leite

    1993-07-01

    Full Text Available O CENARGEN/EMBRAPA está realizando a prospecção das áreas prioritárias para a conservação in situ dos recursos genéticos de espécies com importância sócio-econômica para cada bioma existente no Brasil, buscando a conservação da variabilidade genética das mesmas. Para a prospecção da floresta tropical úmida amazônica, inicialmente foram feitos levantamentos de herbários nacionais bem como de literatura, para tentar definir os padrões de distribuição geográfica de algumas espécies prioritárias da região. A ocorrência das mesmas foi correlacionada com solos, clima, vegetação e com a existência de unidades de conservação na Amazônia, no intuito de se propor as áreas mais adequadas para a implantação de reservas genéticas (conservação in situ e de bancos de germoplasma (conservação ex situ à campo. As espécies relatadas no presente trabalho são Aniba rosaeodora Ducke (pau-rosa, Bertholletia excelsa H.B.K. (castanha-do-Pará, Carapa quianensis Aubl. (andiroba, Cedrela fissilis Veil, e C. odorata L. (cedros, Copaifera langsdorffii Desf. e C. multijuga Hayne (copaibas, Cordia goeldiana Huber (freijó, Jacaranda copaia (Aubl. D. Dom (pará-pará, Simaruba amara Aubl. e Virola sebifera Aubl. e V. surinamensis Warb. (ucuúbas e Voucapoua americana Aubl. e V. pallidor Ducke (acapús. Trabalhos posteriores com as mesmas incluirão a corroboração à campo dos dados obtidos nos herbários e na literatura, bem como estudos a nível de população dentro das áreas selecionadas.CENARGEN/EMBRAPA is investigating priority areas for in situ conservation of genetic resources of socially and economically important species. Herbaria and the literature were consulted to determine the distribution patterns of some tropical rain forest species. Known species distribution were correlated with soils, climate, vegetation types and the existence of conservation units, in order to propose the establishment of genetic reserves for

  13. Contributions of teaching students to built a competent teacher profile from the reflexion in the classroom Aportaciones de los maestros en formación a la construcción del perfil del docente competente desde la reflexión en el aula

    Directory of Open Access Journals (Sweden)

    Vicente Carrasco Embuena

    2012-11-01

    Full Text Available This paper is the result of a study suggested to recognize what the profile of a good teacher is, by the identification and description of the qualities that students of Teaching Degree attribute them. The study is based on information provided by a group of 73 students of the second course of Teaching in Physical Education Degree, from the University of Alicante, of the academic course 2009/10. The students answered openly the proposal to write two letters to two of their teachers at any stage of their academic career: one was addressed to that teacher who had had a profound impact on them, the other, to that person dedicated to teaching but had gone unnoticed in their lives. We have focused our attention only at the letters that they addressed to good teachers because it has been considered the magnitude of the study. Participants have thrown valuable information that has become the engine of this research, qualitative in nature, with which we have studied a number of categories with AQUAD 6 (Huber, 2006 programme. The results contribute to draft the profile of a teaching professional to educate citizens in the information society, based in five dimensions: personal qualities of teachers, teaching ability, quality of teacher interaction processes, types of training promoted by the teacher and teacher performance impact on students. These dimensions are basically the same in the scientific literature and in the syllabus of Teaching Degree. Este artículo recoge los resultados de un estudio realizado para conocer cuál es el perfil del docente competente, mediante la identificación y descripción de las cualidades que los estudiantes de Magisterio atribuyen a los buenos profesores. Se basa en la información aportada por un grupo de 73 alumnos/as de segundo curso de la Diplomatura de Magisterio de Educación Física, de la Universidad de Alicante, del curso académico 2009/10, que atendieron la propuesta de escribir sendas cartas a dos

  14. The status of conservation of urban forests in eastern Amazonia.

    Science.gov (United States)

    Amaral, D D; Vieira, I C G; Salomão, R P; Almeida, S S; Jardim, M A G

    2012-05-01

    This study aims to identify the remnant tree flora in six forest fragments in the metropolitan area of Belém and to analyze these fragments in terms of biological conservation, species richness and diversity in the local urban landscape. The fragments and their respective sampling areas were as follows: Amafrutas reserve (15 ha), Trambioca Is. reserve (2 ha), Bosque Rodrigues Alves city park (15 ha), Combu Is. reserve (10 ha), Gunma Park reserve (10 ha) and Mocambo reserve (5 ha). Inventories were built from lineal plots of 250 m² and included trees with DBH equal to or greater than 10 cm at a height of 1.3 m above ground. Sixty-nine families and 759 species, of which eight were officially listed as endangered (Brazilian National Flora: Ministry of Environment, Normative Instruction of September, 2008; Pará State Flora: Decree Nº. 802 of February 2008) were recorded. These endangered species are: Aspidosperma desmanthum Benth. ex Müll. Arg. (Apocynaceae), Cedrela odorata L. (Meliaceae), Eschweilera piresii S.A Mori (Lecythidaceae), Euxylophora paraensis Huber (Rutaceae), Hymenolobium excelsum Ducke (Leguminosae), Manilkara huberi (Ducke) Chevalier (Sapotaceae), Tabebuia impetiginosa (Mart. ex DC.) Standl. (Bignoniaceae), Mezilaurus itauba (Meisn.) Taub. ex Mez (Lauraceae) and Qualea coerulea Aubl. (Vochysiaceae). Emergency actions such as implementing management plans for already existing Conservation Units, the creation of new such units in areas of primary forest fragments (as in the case of the Amafrutas reserve), as well as the intensification of actions of surveillance and monitoring, should be undertaken by Federal, State, and Municipal environmental agencies so as to ensure the conservation of these last primary forest remnants in the metropolitan area of Belém.

  15. Soft-tissue imaging with C-arm cone-beam CT using statistical reconstruction

    Science.gov (United States)

    Wang, Adam S; Stayman, J Webster; Otake, Yoshito; Kleinszig, Gerhard; Vogt, Sebastian; Gallia, Gary L; Khanna, A Jay; Siewerdsen, Jeffrey H

    2014-01-01

    The potential for statistical image reconstruction methods such as penalized-likelihood (PL) to improve C-arm cone-beam CT (CBCT) soft-tissue visualization for intraoperative imaging over conventional filtered backprojection (FBP) is assessed in this work by making a fair comparison in relation to soft-tissue performance. A prototype mobile C-arm was used to scan anthropomorphic head and abdomen phantoms as well as a cadaveric torso at doses substantially lower than typical values in diagnostic CT, and the effects of dose reduction via tube current reduction and sparse sampling were also compared. Matched spatial resolution between PL and FBP was determined by the edge spread function of low-contrast (~40–80 HU) spheres in the phantoms, which were representative of soft-tissue imaging tasks. PL using the non-quadratic Huber penalty was found to substantially reduce noise relative to FBP, especially at lower spatial resolution where PL provides a contrast-to-noise ratio increase up to 1.4–2.2 × over FBP at 50% dose reduction across all objects. Comparison of sampling strategies indicates that soft-tissue imaging benefits from fully sampled acquisitions at dose above ~1.7 mGy and benefits from 50% sparsity at dose below ~1.0 mGy. Therefore, an appropriate sampling strategy along with the improved low-contrast visualization offered by statistical reconstruction demonstrates the potential for extending intraoperative C-arm CBCT to applications in soft-tissue interventions in neurosurgery as well as thoracic and abdominal surgeries by overcoming conventional tradeoffs in noise, spatial resolution, and dose. PMID:24504126

  16. Jumps in GNSS coordinates time series, a simple and fast methodology to clean the data sets

    Science.gov (United States)

    Bruni, Sara; Zerbini, Susanna; Raicich, Fabio; Errico, Maddalena; Santi, Efisio

    2014-05-01

    GNSS coordinate time series often suffer from the presence of undesired offsets of different nature which may impair the reliable estimation of the long-period trend and that should be corrected in the original data sets. Examples of such discontinuities are those originated by earthquakes, monumentation problems, replacement/maintenance of the station equipment, change of the reference system and by a number of unforeseen events. We have developed an automated and fast data inspection procedure for estimating the time of occurrence and the magnitude of the jumps and for correcting the time series accordingly. These processing characteristics are important because many time series are now spanning almost two decades, and dense GNSS networks are becoming a reality. The procedure has been developed and tailored to GNSS data sets starting from the Sequential T-test Analysis of Regime Shifts (STARS) originally conceived by Rodionov (Geophys. Res. Lett., 31, L09204, 2004) in the context of climatic studies. This technique does not make any a priori assumption on the time of occurrence and on the magnitude of the discontinuities. A jump is detected and its magnitude estimated when, over two consecutive time windows of the same length, the mean value exhibits a statistically significant change. Three user-defined parameters are required: the cut-off length, L, representing the minimum time interval between two consecutive discontinuities, the significance level, p, of the exploited two-tailed Student t-test, and the Huber parameter, H, used to compute a weighted mean over the L-day intervals. The method has been tested on GPS coordinates time series of stations located in the southeastern Po Plain, in Italy. The series span more than 15 years and are affected by offsets of different nature. The methodology has proven to be effective, as confirmed by the comparison between the corrected GPS time series and those obtained by other co-located observation techniques such as

  17. Discrimination index of microcytic anemia in young soldiers: a single institutional analysis.

    Directory of Open Access Journals (Sweden)

    Tzu-Chuan Huang

    Full Text Available The common differential diagnosis of microcytic anemia in young Asian men includes iron deficiency anemia (IDA, α-thalassemia (αT and β-thalassemia (βT. In this study, we aimed to distinguish between these diseases in a distinct population of young men using a specific index.We retrospectively reviewed the laboratory data of young men with microcytic anemia. The clinical, characteristic and laboratory data, including complete blood cell counts, serum ferritin and hemoglobin electrophoresis results, were collected; genomic DNA mutations were also evaluated. Based on these data, ten discrimination indices were used to differentiate thalassemia from IDA. The sensitivity, specificity, positive and negative predictive values, Youden's index and receiver operating characteristic (ROC curves were also calculated.A total of 877 patients (92 patients with IDA, 332 with αT and 453 with βT were enrolled; the Shine and Lal (S&L formula was the best method with which to discriminate IDA from thalassemia (100% sensitivity, 91% specificity. The new cut-off values were evaluated, and the approaches used in our study cohort, particularly the Green & King (G&K formula, significantly increased the accuracies of red cell distribution width-containing indices (cut-off value: 58.66; 89.62% sensitivity and 96.2% specificity; AUC: 0.9716. In addition, when applied properly, these indices could differentiate IDA patients from αT patients, especially Huber-Herklotz index (HH.The sensitivity and specificity differed among ethnic and age groups. We concluded that when using the original cut-off value, the S&L formula was the best discriminating index for differentiating between IDA and thalassemia in young Asian men. However, when using the G&K formula, the newly obtained cut-off value must be applied to increase accuracy based on the results from our cohort.

  18. Unified blind method for multi-image super-resolution and single/multi-image blur deconvolution.

    Science.gov (United States)

    Faramarzi, Esmaeil; Rajan, Dinesh; Christensen, Marc P

    2013-06-01

    This paper presents, for the first time, a unified blind method for multi-image super-resolution (MISR or SR), single-image blur deconvolution (SIBD), and multi-image blur deconvolution (MIBD) of low-resolution (LR) images degraded by linear space-invariant (LSI) blur, aliasing, and additive white Gaussian noise (AWGN). The proposed approach is based on alternating minimization (AM) of a new cost function with respect to the unknown high-resolution (HR) image and blurs. The regularization term for the HR image is based upon the Huber-Markov random field (HMRF) model, which is a type of variational integral that exploits the piecewise smooth nature of the HR image. The blur estimation process is supported by an edge-emphasizing smoothing operation, which improves the quality of blur estimates by enhancing strong soft edges toward step edges, while filtering out weak structures. The parameters are updated gradually so that the number of salient edges used for blur estimation increases at each iteration. For better performance, the blur estimation is done in the filter domain rather than the pixel domain, i.e., using the gradients of the LR and HR images. The regularization term for the blur is Gaussian (L2 norm), which allows for fast noniterative optimization in the frequency domain. We accelerate the processing time of SR reconstruction by separating the upsampling and registration processes from the optimization procedure. Simulation results on both synthetic and real-life images (from a novel computational imager) confirm the robustness and effectiveness of the proposed method.

  19. Spatial and Temporal Changes in Fluid Chemistry and Microbial Community Diversity in Subseafloor Habitats at Axial Seamount Following the 1998 Eruption

    Science.gov (United States)

    Opatkiewicz, A. D.; Butterfield, D. A.; Baross, J. A.

    2006-12-01

    The subseafloor associated with hydrothermal vents has the potential to contribute significantly to primary production and biogeochemical cycling in the ocean. However, too little is known about the phylogenetic and physiological diversity of the microbial communities or their in situ activity to assess this potential. There are previous reports that subseafloor environments at active vent sites harbor a high diversity of microorganisms that include different thermal and metabolic groups of Bacteria and Archaea. However, little is known about how these communities change over time (minutes to years), at different vent sites, or in response to perturbations. In an effort to address these issues, the subseafloor microbial community diversity was examined from five diffuse-flow hydrothermal vent sites (distributed geographically over the seamount between three distinguishable vent fields) over the course of six years following the 1998 eruption at Axial Seamount (45° 58'N; 130° 00' W). PCR-based Terminal Restriction Fragment Length Polymorphism (TRFLP) analyses were used to follow changes in the microbial community structure. 16S rRNA gene sequence analysis was used to identify the specific groups of Bacteria and Archaea from the TRFLP analyses. Deep-sea background seawater microorganisms were detected in hydrothermal fluid samples (Bacteria: Alpha and Gamma Proteobacteria, Archaea: Marine Group I Crenarchaeota and Marine Group II Euryarchaeota). The unique subseafloor phylotypes detected included Epsilon, Delta and Beta Proteobacteria, Methanococcales and thermophilic Euryarchaeota. Temperature and key chemical species, which indicate the degree of mixing of hydrothermal fluid with seawater in the subsurface, have been shown previously to be important in affecting the diversity of the microbial communities (Huber et al., 2003). This work substantiates these earlier findings and furthermore presents evidence that additional chemical species, distinguishing the

  20. PURY: a database of geometric restraints of hetero compounds for refinement in complexes with macromolecular structures.

    Science.gov (United States)

    Andrejasic, Miha; Praaenikar, Jure; Turk, Dusan

    2008-11-01

    The number and variety of macromolecular structures in complex with ;hetero' ligands is growing. The need for rapid delivery of correct geometric parameters for their refinement, which is often crucial for understanding the biological relevance of the structure, is growing correspondingly. The current standard for describing protein structures is the Engh-Huber parameter set. It is an expert data set resulting from selection and analysis of the crystal structures gathered in the Cambridge Structural Database (CSD). Clearly, such a manual approach cannot be applied to the vast and ever-growing number of chemical compounds. Therefore, a database, named PURY, of geometric parameters of chemical compounds has been developed, together with a server that accesses it. PURY is a compilation of the whole CSD. It contains lists of atom classes and bonds connecting them, as well as angle, chirality, planarity and conformation parameters. The current compilation is based on CSD 5.28 and contains 1978 atom classes and 32,702 bonding, 237,068 angle, 201,860 dihedral and 64,193 improper geometric restraints. Analysis has confirmed that the restraints from the PURY database are suitable for use in macromolecular crystal structure refinement and should be of value to the crystallographic community. The database can be accessed through the web server http://pury.ijs.si/, which creates topology and parameter files from deposited coordinates in suitable forms for the refinement programs MAIN, CNS and REFMAC. In the near future, the server will move to the CSD website http://pury.ccdc.cam.ac.uk/.

  1. What is mental health? Evidence towards a new definition from a mixed methods multidisciplinary international survey

    Science.gov (United States)

    Manwell, Laurie A; Barbic, Skye P; Roberts, Karen; Durisko, Zachary; Lee, Cheolsoon; Ware, Emma; McKenzie, Kwame

    2015-01-01

    Objective Lack of consensus on the definition of mental health has implications for research, policy and practice. This study aims to start an international, interdisciplinary and inclusive dialogue to answer the question: What are the core concepts of mental health? Design and participants 50 people with expertise in the field of mental health from 8 countries completed an online survey. They identified the extent to which 4 current definitions were adequate and what the core concepts of mental health were. A qualitative thematic analysis was conducted of their responses. The results were validated at a consensus meeting of 58 clinicians, researchers and people with lived experience. Results 46% of respondents rated the Public Health Agency of Canada (PHAC, 2006) definition as the most preferred, 30% stated that none of the 4 definitions were satisfactory and only 20% said the WHO (2001) definition was their preferred choice. The least preferred definition of mental health was the general definition of health adapted from Huber et al (2011). The core concepts of mental health were highly varied and reflected different processes people used to answer the question. These processes included the overarching perspective or point of reference of respondents (positionality), the frameworks used to describe the core concepts (paradigms, theories and models), and the way social and environmental factors were considered to act. The core concepts of mental health identified were mainly individual and functional, in that they related to the ability or capacity of a person to effectively deal with or change his/her environment. A preliminary model for the processes used to conceptualise mental health is presented. Conclusions Answers to the question, ‘What are the core concepts of mental health?’ are highly dependent on the empirical frame used. Understanding these empirical frames is key to developing a useful consensus definition for diverse populations. PMID:26038353

  2. Two-dimensional NMR studies of squash family inhibitors. Sequence-specific proton assignments and secondary structure of reactive-site hydrolyzed Cucurbita maxima trypsin inhibitor III.

    Science.gov (United States)

    Krishnamoorthi, R; Gong, Y X; Lin, C L; VanderVelde, D

    1992-01-28

    The solution structure of reactive-site hydrolyzed Cucurbita maxima trypsin inhibitor III (CMTI-III*) was investigated by two-dimensional proton nuclear magnetic resonance (2D NMR) spectroscopy. CMTI-III*, prepared by reacting CMTI-III with trypsin which cleaved the Arg5-Ile6 peptide bond, had the two fragments held together by a disulfide linkage. Sequence-specific 1H NMR resonance assignments were made for all the 29 amino acid residues of the protein. The secondary structure of CMTI-III*, as deduced from NOESY cross peaks and identification of slowly exchanging hydrogens, contains two turns (residues 8-12 and 24-27), a 3(10)-helix (residues 13-16), and a triple-stranded beta-sheet (residues 8-10, 29-27, and 21-25). This secondary structure is similar to that of CMTI-I [Holak, T. A., Gondol, D., Otlewski, J., & Wilusz, T. (1989) J. Mol. Biol. 210, 635-648], which has a Glu instead of a Lys at position 9. Sequential proton assignments were also made for the virgin inhibitor, CMTI-III, at pH 4.71, 30 degrees C. Comparison of backbone hydrogen chemical shifts of CMTI-III and CMTI-III* revealed significant changes for residues located far away from the reactive-site region as well as for those located near it, indicating tertiary structural changes that are transmitted through most of the 29 residues of the inhibitor protein. Many of these residues are functionally important in that they make contact with atoms of the enzyme in the trypsin-inhibitor complex, as revealed by X-ray crystallography [Bode, W., Greyling, H. J., Huber, R., Otlewski, J., & Wilusz, T. (1989) FEBS Lett. 242, 285-292].(ABSTRACT TRUNCATED AT 250 WORDS)

  3. Proton NMR studies of Cucurbita maxima trypsin inhibitors: evidence for pH-dependent conformational change and His25-Tyr27 interaction.

    Science.gov (United States)

    Krishnamoorthi, R; Lin, C L; Gong, Y X; VanderVelde, D; Hahn, K

    1992-01-28

    A pH-dependent His25-Tyr27 interaction was demonstrated in the case of Cucurbita maxima trypsin inhibitors (CMTI-I and CMTI-III) by means of nuclear magnetic resonance (NMR) spectroscopy. pH titration, line widths, peak shapes, deuterium exchange kinetics, and two-dimensional nuclear Overhauser effect spectroscopy (NOESY) were employed to characterize a conformational change involving Tyr27, which was shown to be triggered by deprotonation of His25 around pH 6. A hydrogen bond is proposed to be formed between N epsilon of His25 and OH of Tyr27, as a distance between the atoms, His25 N epsilon and Tyr27 OH, of 3.02 A is consistent with a model built with NOE-derived distance constraints. Both the X-ray [Bode, W., Greyling, J.H., Huber, R., Otlewski, J., & Wilusz, T. (1989) FEBS Lett. 242, 282-292] and NMR [Holak, T.A., Gondol, D., Otlewski, J., & Wilusz, T. (1989) J. Mol. Biol. 210, 635-648] structures of CMTI-I at low pH (4.7-5.3) rule out such an interaction between the two aromatic rings, as the ring planes are oriented about 10 A away from each other. The presently characterized relative orientations of His25 and Tyr27 are of functional significance, as these residues make contact with the enzyme in the enzyme-inhibitor complex. Furthermore, trypsin assay and inhibitor-binding studies showed that conformations of trypsin and the squash inhibitor were functionally relevant only in the pH range 6-8. The pKa of His25 was determined and found to be influenced by Glu9/Lys substitution and by the hydrolysis of the reactive-site peptide bond between Arg5 and Ile6.(ABSTRACT TRUNCATED AT 250 WORDS)

  4. Comparison of the effects of continuous and pulsed mobile phone like RF exposure on the human EEG.

    Science.gov (United States)

    Perentos, N; Croft, R J; McKenzie, R J; Cvetkovic, D; Cosic, I

    2007-12-01

    It is not clear yet whether Global System for Mobiles (GSM) mobile phone radiation has the ability to interfere with normal resting brain function. There have been reports that GSM exposure increases alpha band power, and does so only when the signal is modulated at low frequencies (Huber, R., Treyer, V., Borbely, A. A., Schuderer, J., Gottselig, J. M., Landolt, H.P., Werth, E., Berthold,T., Kuster, N., Buck, A and Achermann, P. Electromagnetic fields, such as those from mobile phones, alter regional cerebral blood flow and sleep and waking EEG. J Sleep Res 11, 289-295, 2002.) However, as that research employed exposure distributions that are not typical of normal GSM handset usage (deep brain areas were overexposed), it remains to be determined whether a similar result patterning would arise from a more representative exposure. In this fully counterbalanced cross-over design, we recruited 12 participants and tried to replicate the modulation linked post exposure alpha band power increase described above, but with an exposure source (dipole antenna) more closely resembling that of a real GSM handset. Exposures lasted for 15 minutes. No changes to alpha power were found for either modulated or unmodulated radiofrequency fields, and thus we failed to replicate the above results. Possible reasons for this failure to replicate are discussed, with the main reason argued to be the lower and more representative exposure distribution employed in the present study. In addition we investigated the possible GSM exposure related effects on the non-linear features of the resting electroencephalogram using the Approximate Entropy (ApEn) method of analysis. Again, no effect was demonstrated for either modulated or unmodulated radiofrequency exposures.

  5. Seasonal variations of gas exchange and water relations in deciduous and evergreen trees in monsoonal dry forests of Thailand.

    Science.gov (United States)

    Ishida, Atsushi; Harayama, Hisanori; Yazaki, Kenichi; Ladpala, Phanumard; Sasrisang, Amornrat; Kaewpakasit, Kanokwan; Panuthai, Samreong; Staporn, Duriya; Maeda, Takahisa; Gamo, Minoru; Diloksumpun, Sapit; Puangchit, Ladawan; Ishizuka, Moriyoshi

    2010-08-01

    This study compared leaf gas exchange, leaf hydraulic conductance, twig hydraulic conductivity and leaf osmotic potential at full turgor between two drought-deciduous trees, Vitex peduncularis Wall. and Xylia xylocarpa (Roxb.) W. Theob., and two evergreen trees, Hopea ferrea Lanessan and Syzygium cumini (L.) Skeels, at the uppermost canopies in tropical dry forests in Thailand. The aims were to examine (i) whether leaf and twig hydraulic properties differ in relation to leaf phenology and (ii) whether xylem cavitation is a determinant of leaf shedding during the dry season. The variations in almost all hydraulic traits were more dependent on species than on leaf phenology. Evergreen Hopea exhibited the lowest leaf-area-specific twig hydraulic conductivity (leaf-area-specific K(twig)), lamina hydraulic conductance (K(lamina)) and leaf osmotic potential at full turgor (Ψ(o)) among species, whereas evergreen Syzygium exhibited the highest leaf-area-specific K(twig), K(lamina) and Ψ(o). Deciduous Xylia had the highest sapwood-area-specific K(twig), along with the lowest Huber value (sapwood area/leaf area). More negative osmotic Ψ(o) and leaf osmotic adjustment during the dry season were found in deciduous Vitex and evergreen Hopea, accompanied by low sapwood-area-specific K(twig). Regarding seasonal changes in hydraulics, no remarkable decrease in K(lamina) and K(twig) was found during the dry season in any species. Results suggest that leaf shedding during the dry season is not always associated with extensive xylem cavitation.

  6. PLANET HUNTERS. VIII. CHARACTERIZATION OF 41 LONG-PERIOD EXOPLANET CANDIDATES FROM KEPLER ARCHIVAL DATA

    International Nuclear Information System (INIS)

    Wang, Ji; Fischer, Debra A.; Picard, Alyssa; Schmitt, Joseph R.; Boyajian, Tabetha S.; Barclay, Thomas; Ma, Bo; Bowler, Brendan P.; Riddle, Reed; Jek, Kian J.; LaCourse, Daryll; Simister, Dean Joseph; Grégoire, Boscher; Babin, Sean P.; Poile, Trevor; Jacobs, Thomas Lee; Baranec, Christoph; Law, Nicholas M.; Lintott, Chris; Schawinski, Kevin

    2015-01-01

    The census of exoplanets is incomplete for orbital distances larger than 1 AU. Here, we present 41 long-period planet candidates in 38 systems identified by Planet Hunters based on Kepler archival data (Q0–Q17). Among them, 17 exhibit only one transit, 14 have two visible transits, and 10 have more than three visible transits. For planet candidates with only one visible transit, we estimate their orbital periods based on transit duration and host star properties. The majority of the planet candidates in this work (75%) have orbital periods that correspond to distances of 1–3 AU from their host stars. We conduct follow-up imaging and spectroscopic observations to validate and characterize planet host stars. In total, we obtain adaptive optics images for 33 stars to search for possible blending sources. Six stars have stellar companions within 4″. We obtain high-resolution spectra for 6 stars to determine their physical properties. Stellar properties for other stars are obtained from the NASA Exoplanet Archive and the Kepler Stellar Catalog by Huber et al. We validate 7 planet candidates that have planet confidence over 0.997 (3σ level). These validated planets include 3 single-transit planets (KIC-3558849b, KIC-5951458b, and KIC-8540376c), 3 planets with double transits (KIC-8540376b, KIC-9663113b, and KIC-10525077b), and 1 planet with four transits (KIC-5437945b). This work provides assessment regarding the existence of planets at wide separations and the associated false positive rate for transiting observation (17%–33%). More than half of the long-period planets with at least three transits in this paper exhibit transit timing variations up to 41 hr, which suggest additional components that dynamically interact with the transiting planet candidates. The nature of these components can be determined by follow-up radial velocity and transit observations

  7. Identification of a novel SERPINA-1 mutation causing alpha-1 antitrypsin deficiency in a patient with severe bronchiectasis and pulmonary embolism

    Directory of Open Access Journals (Sweden)

    Milger K

    2015-05-01

    Full Text Available Katrin Milger,1 Lesca Miriam Holdt,2 Daniel Teupser,2 Rudolf Maria Huber,1 Jürgen Behr,1 Nikolaus Kneidinger1 1Department of Internal Medicine V, University of Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, 2Institute of Laboratory Medicine, University of Munich, Munich, Germany Abstract: Deficiency in the serine protease inhibitor, alpha-1 antitrypsin (AAT, is known to cause emphysema and liver disease. Other manifestations, including airway disease or skin disorders, have also been described. A 44-year-old woman presented to our emergency department with dyspnea and respiratory insufficiency. She had never smoked, and had been diagnosed with COPD 9 years earlier. Three months previously, she had suffered a pulmonary embolism. Chest computed tomography scan revealed severe cystic bronchiectasis with destruction of the lung parenchyma. The sweat test was normal and there was no evidence of the cystic fibrosis transmembrane conductance regulator (CFTR mutation. Capillary zone electrophoresis showed a decrease of alpha-1 globin band and AAT levels were below the quantification limit (<25 mg/dL. No S or Z mutation was identified, but sequencing analysis found a homozygous cytosine and adenine (CA insertion in exon 2 of the SERPINA-1 gene, probably leading to a dysfunctional protein (PI Null/Null. This mutation has not been previously identified. The atypical presentation of the patient, with severe cystic bronchiectasis, highlights AAT deficiency as a differential diagnosis in bronchiectasis. Further, awareness should be raised regarding a possible increased risk of thromboembolism associated with AAT deficiency. Keywords: alpha-1 antitrypsin deficiency, bronchiectasis, SERPINA-1 mutation, pulmonary embolism

  8. CNA Training Requirements and Resident Care Outcomes in Nursing Homes.

    Science.gov (United States)

    Trinkoff, Alison M; Storr, Carla L; Lerner, Nancy B; Yang, Bo Kyum; Han, Kihye

    2017-06-01

    To examine the relationship between certified nursing assistant (CNA) training requirements and resident outcomes in U.S. nursing homes (NHs). The number and type of training hours vary by state since many U.S. states have chosen to require additional hours over the federal minimums, presumably to keep pace with the increasing complexity of care. Yet little is known about the impact of the type and amount of training CNAs are required to have on resident outcomes. Compiled data on 2010 state regulatory requirements for CNA training (clinical, total initial training, in-service, ratio of clinical to didactic hours) were linked to 2010 resident outcomes data from 15,508 NHs. Outcomes included the following NH Compare Quality Indicators (QIs) (Minimum Data Set 3.0): pain, antipsychotic use, falls with injury, depression, weight loss and pressure ulcers. Facility-level QIs were regressed on training indicators using generalized linear models with the Huber-White correction, to account for clustering of NHs within states. Models were stratified by facility size and adjusted for case-mix, ownership status, percentage of Medicaid-certified beds and urban-rural status. A higher ratio of clinical to didactic hours was related to better resident outcomes. NHs in states requiring clinical training hours above federal minimums (i.e., >16hr) had significantly lower odds of adverse outcomes, particularly pain falls with injury, and depression. Total and in-service training hours also were related to outcomes. Additional training providing clinical experiences may aid in identifying residents at risk. This study provides empirical evidence supporting the importance of increased requirements for CNA training to improve quality of care. © The Author 2016. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  9. Elevated air humidity affects hydraulic traits and tree size but not biomass allocation in young silver birches (Betula pendula

    Directory of Open Access Journals (Sweden)

    Arne eSellin

    2015-10-01

    Full Text Available As changes in air temperature, precipitation, and air humidity are expected in the coming decades, studies on the impact of these environmental shifts on plant growth and functioning are of major importance. Greatly understudied aspects of climate change include consequences of increasing air humidity on forest ecosystems, predicted for high latitudes. The main objective of this study was to find a link between hydraulic acclimation and shifts in trees’ resource allocation in silver birch (Betula pendula Roth in response to elevated air relative humidity (RH. A second question was whether the changes in hydraulic architecture depend on tree size. Two years of application of increased RH decreased the biomass accumulation in birch saplings, but the biomass partitioning among aboveground parts (leaves, branches, and stems remained unaffected. Increased stem Huber values (xylem cross-sectional area to leaf area ratio observed in trees under elevated RH did not entail changes in the ratio of non-photosynthetic to photosynthetic tissues. The reduction of stem-wood density is attributable to diminished mechanical load imposed on the stem, since humidified trees had relatively shorter crowns. Growing under higher RH caused hydraulic conductance of the root system (KR to increase, while KR (expressed per unit leaf area decreased and leaf hydraulic conductance increased with tree size. Saplings of silver birch acclimate to increasing air humidity by adjusting plant morphology (live crown length, slenderness, specific leaf area, and fine-root traits and wood density rather than biomass distribution among aboveground organs. The treatment had a significant effect on several hydraulic properties of the trees, while the shifts were largely associated with changes in tree size but not in biomass allocation.

  10. The dynamics of the multi-planet system orbiting Kepler-56

    Energy Technology Data Exchange (ETDEWEB)

    Li, Gongjie; Naoz, Smadar; Johnson, John Asher [Harvard Smithsonian Center for Astrophysics, Institute for Theory and Computation, 60 Garden Street, Cambridge, MA 02138 (United States); Valsecchi, Francesca; Rasio, Frederic A., E-mail: gli@cfa.harvard.edu, E-mail: snaoz@cfa.harvard.edu [Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University, Evanston, IL 60208 (United States)

    2014-10-20

    Kepler-56 is a multi-planet system containing two coplanar inner planets that are in orbits misaligned with respect to the spin axis of the host star, and an outer planet. Various mechanisms have been proposed to explain the broad distribution of spin-orbit angles among exoplanets, and these theories fall under two broad categories. The first is based on dynamical interactions in a multi-body system, while the other assumes that disk migration is the driving mechanism in planetary configuration and that the star (or disk) is titled with respect to the planetary plane. Here we show that the large observed obliquity of Kepler 56 system is consistent with a dynamical origin. In addition, we use observations by Huber et al. to derive the obliquity's probability distribution function, thus improving the constrained lower limit. The outer planet may be the cause of the inner planets' large obliquities, and we give the probability distribution function of its inclination, which depends on the initial orbital configuration of the planetary system. We show that even in the presence of precise measurement of the true obliquity, one cannot distinguish the initial configurations. Finally we consider the fate of the system as the star continues to evolve beyond the main sequence, and we find that the obliquity of the system will not undergo major variations as the star climbs the red giant branch. We follow the evolution of the system and find that the innermost planet will be engulfed in ∼129 Myr. Furthermore we put an upper limit of ∼155 Myr for the engulfment of the second planet. This corresponds to ∼3% of the current age of the star.

  11. PLANET HUNTERS. VIII. CHARACTERIZATION OF 41 LONG-PERIOD EXOPLANET CANDIDATES FROM KEPLER ARCHIVAL DATA

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Ji; Fischer, Debra A.; Picard, Alyssa; Schmitt, Joseph R.; Boyajian, Tabetha S. [Department of Astronomy, Yale University, New Haven, CT 06511 (United States); Barclay, Thomas [NASA Ames Research Center, M/S 244-30, Moffett Field, CA 94035 (United States); Ma, Bo [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055 (United States); Bowler, Brendan P.; Riddle, Reed [California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91101 (United States); Jek, Kian J.; LaCourse, Daryll; Simister, Dean Joseph; Grégoire, Boscher; Babin, Sean P.; Poile, Trevor; Jacobs, Thomas Lee; Baranec, Christoph [Institute for Astronomy, University of Hawai‘i at Mānoa, Hilo, HI 96720-2700 (United States); Law, Nicholas M. [Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3255 (United States); Lintott, Chris [Oxford Astrophysics, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH (United Kingdom); Schawinski, Kevin [Institute for Astronomy, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, CH-8093 Zurich (Switzerland); and others

    2015-12-20

    The census of exoplanets is incomplete for orbital distances larger than 1 AU. Here, we present 41 long-period planet candidates in 38 systems identified by Planet Hunters based on Kepler archival data (Q0–Q17). Among them, 17 exhibit only one transit, 14 have two visible transits, and 10 have more than three visible transits. For planet candidates with only one visible transit, we estimate their orbital periods based on transit duration and host star properties. The majority of the planet candidates in this work (75%) have orbital periods that correspond to distances of 1–3 AU from their host stars. We conduct follow-up imaging and spectroscopic observations to validate and characterize planet host stars. In total, we obtain adaptive optics images for 33 stars to search for possible blending sources. Six stars have stellar companions within 4″. We obtain high-resolution spectra for 6 stars to determine their physical properties. Stellar properties for other stars are obtained from the NASA Exoplanet Archive and the Kepler Stellar Catalog by Huber et al. We validate 7 planet candidates that have planet confidence over 0.997 (3σ level). These validated planets include 3 single-transit planets (KIC-3558849b, KIC-5951458b, and KIC-8540376c), 3 planets with double transits (KIC-8540376b, KIC-9663113b, and KIC-10525077b), and 1 planet with four transits (KIC-5437945b). This work provides assessment regarding the existence of planets at wide separations and the associated false positive rate for transiting observation (17%–33%). More than half of the long-period planets with at least three transits in this paper exhibit transit timing variations up to 41 hr, which suggest additional components that dynamically interact with the transiting planet candidates. The nature of these components can be determined by follow-up radial velocity and transit observations.

  12. Multiaxial fatigue assessment of crankshafts by local stress and critical plane approach

    Directory of Open Access Journals (Sweden)

    M. Leitner

    2016-10-01

    Full Text Available For multiaxially-loaded parts several stress-based fatigue assessment concepts are applicable mostly taking uniaxial test results as basis. These approaches work well in case of proportional loading states, but on contrary, for non-proportional stress conditions, implying a change of the principal stress direction, deviations in the fatigue life estimation may occur. The aim of this study is to evaluate the cyclic multiaxial material behavior experimentally and to proof the applicability of stress-based methods to assess the fatigue strength. The investigated base materials incorporate the commonly applied crankshaft steels 50CrMo4 and 34CrNiMo6 without surface-layer post-treatments. Extensive fatigue tests with small-scale specimens are performed to evaluate the material behavior under cyclic loading. The experiments include basic uniaxial characterizations, such as notch stress sensitivity and effect of loading type, including tests under tension, rotating bending, and torsion loading. Additionally, combined loading tests with proportional and non-proportional situations are presented to reveal the fatigue resistance for multiaxial stress states. Significant loading conditions, such as proportional stress under rotating bending and torsion, and further on, non-proportional effects like phase shifts and varying frequency ratios are presented. The local fatigue strength assessment is performed on the basis of the critical plane approach, whereat the normal and shear stresses are transformed in numerous cutting planes. Equivalent stress hypotheses are applied and compared with the experiments showing that the Huber-Mises-Hencky criterion fits well to the test results in case of proportional rotating bending and torsion loading

  13. Soft-tissue imaging with C-arm cone-beam CT using statistical reconstruction

    International Nuclear Information System (INIS)

    Wang, Adam S; Stayman, J Webster; Otake, Yoshito; Siewerdsen, Jeffrey H; Kleinszig, Gerhard; Vogt, Sebastian; Gallia, Gary L; Khanna, A Jay

    2014-01-01

    The potential for statistical image reconstruction methods such as penalized-likelihood (PL) to improve C-arm cone-beam CT (CBCT) soft-tissue visualization for intraoperative imaging over conventional filtered backprojection (FBP) is assessed in this work by making a fair comparison in relation to soft-tissue performance. A prototype mobile C-arm was used to scan anthropomorphic head and abdomen phantoms as well as a cadaveric torso at doses substantially lower than typical values in diagnostic CT, and the effects of dose reduction via tube current reduction and sparse sampling were also compared. Matched spatial resolution between PL and FBP was determined by the edge spread function of low-contrast (∼40–80 HU) spheres in the phantoms, which were representative of soft-tissue imaging tasks. PL using the non-quadratic Huber penalty was found to substantially reduce noise relative to FBP, especially at lower spatial resolution where PL provides a contrast-to-noise ratio increase up to 1.4–2.2× over FBP at 50% dose reduction across all objects. Comparison of sampling strategies indicates that soft-tissue imaging benefits from fully sampled acquisitions at dose above ∼1.7 mGy and benefits from 50% sparsity at dose below ∼1.0 mGy. Therefore, an appropriate sampling strategy along with the improved low-contrast visualization offered by statistical reconstruction demonstrates the potential for extending intraoperative C-arm CBCT to applications in soft-tissue interventions in neurosurgery as well as thoracic and abdominal surgeries by overcoming conventional tradeoffs in noise, spatial resolution, and dose. (paper)

  14. Context change and retrieval difficulty in the list-before-last paradigm.

    Science.gov (United States)

    Sahakyan, Lili; Hendricks, Hannah E

    2012-08-01

    Using the "list-before-last" paradigm (Jang & Huber, Journal of Experimental Psychology: Learning, Memory, and Cognition, 34, 112-127, 2008; Shiffrin, Science, 168, 1601-1603, 1970), we examined whether the difficulty involved in retrieving a previously studied list affects the recall of the current list. Participants studied three lists (L1, L2, and L3), and between L2 and L3 study they either engaged in retrieval of L1 or solved math problems for the same duration of time. After L3 encoding, all participants recalled L2. We examined accurate recall of L2, intrusions from L3, and also the first-response function from L2 across all four experiments. In Experiments 1 and 2, retrieval difficulty was manipulated by presenting participants with variable numbers of letter cues for the L1 words, with some participants receiving more cues than others. In Experiment 1, L1 and L2 words shared the first two letters in common to create potential item interference, whereas in Experiment 2, they did not share common cues. In Experiments 3 and 4, we manipulated retrieval difficulty using a delay manipulation-L1 was encoded 1, 24, or 72 h prior to the session during which L2 and L3 were encoded. In Experiment 3, L1 retrieval involved a cued recall test, whereas in Experiment 4, it involved a free recall test. The results of all of these experiments showed that, as compared to solving math problems, retrieving L1 led to forgetting of L2, reduced intrusions from L3, and reduced first-response functions from L2. However, all of the dependent measures were invariant across the various manipulations of retrieval difficulty. We discuss the results in terms of the context-change interpretation of prior-list retrieval.

  15. NEEM: UNUSUALLY VERSATILE PLANT GENUS AZADIRACHTA WITH MANY USEFUL AND SO FAR INSUFFICIENTLY EXPLOITED PROPERTIES FOR AGRICULTURE, MEDICINE, AND INDUSTRY.

    Science.gov (United States)

    Hummel, H E; Langner, S S; Leithold, G; Schmutterer, H

    2014-01-01

    Neem plants (Rutales: Meliaceae) are well known for their multitude of human benefits in various fields. Specifically well investigated are the Indian neem tree Azadirachta indica A. Juss., the Thai neem A. siamensis Val., the originally Malaysian/Philippinean neem A. excelsa (Jack) and, as a close relative, the Persian lilac, Melia azedarach. The major and most active natural products are azadirachtin, salannin, nimbin and marrangin from Azadirachta species, and azadirachtin analogues like meliantriol from Melia species. Neem fruits, leaves, bark, and roots have specific virtues. They have been traditionally exploited for a considerable part of human history and are documented in Sanskrit texts. Due to human activity in trade and travel both at land and sea, the plant species has been distributed around the globe and is cultivated in many tropical, and subtropical regions. A multitude of natural products of neem have been isolated, chemically characterized or identified, and investigated for their properties in the management of insects, Acarina, Crustacea, nematodes, bacteria, fungi, viruses and soil fertility (for reviews see Kraus, 2002; Schmutterer, 2002A; Rembold, 2002; Koul, 2004; Schmutterer and Huber, 2005; Kleeberg and Strang, 2009; Hummel et al., 2008, 2011, 2012). Neem products are virtually nontoxic, compatible with beneficial insects, pollinators and bees. They are environmentally benign, sustainable, renewable, and of a price affordable for developed countries. In conclusion, neem is a prime example of a natural resource with many beneficial applications in agriculture, human and veterinary medicine. So far, its use is practically free of resistance problems which are frustratingly prevalent in many areas of synthetic insecticide and drug development. Investigating more neem applications will increase future human welfare and health while being of general ecological benefit to the planet.

  16. Architectural plasticity in young Eucalyptus marginata on restored bauxite mines and adjacent natural forest in south-western Australia.

    Science.gov (United States)

    Bleby, Timothy M; Colquhoun, Ian J; Adams, Mark A

    2009-08-01

    The aboveground architecture of Eucalyptus marginata (Jarrah) was investigated in chronosequences of young trees (2.5, 5 and 10 m height) growing in a seasonally dry climate in a natural forest environment with intact soils, and on adjacent restored bauxite mine sites on soils with highly modified A and B horizons above an intact C horizon. Compared to forest trees, trees on restored sites were much younger and faster growing, with straighter, more clearly defined main stems and deeper, narrower crowns containing a greater number of branches that were longer, thinner and more vertically angled. Trees on restored sites also had a higher fraction of biomass in leaves than forest trees, as indicated by 20-25% thicker leaves, 30-70% greater leaf area, 10-30% greater leaf area to sapwood area ratios and 5-30% lesser branch Huber values. Differences in crown architecture and biomass distribution were consistent with putatively greater soil-water, nutrient and light availability on restored sites. Our results demonstrate that under the same climatic conditions, E. marginata displays a high degree of plasticity of aboveground architecture in response to the net effects of resource availability and soil environment. These differences in architecture are likely to have functional consequences in relation to tree hydraulics and growth that, on larger scales, is likely to affect the water and carbon balances of restored forest ecosystems. This study highlights substrate as a significant determinant of tree architecture in water-limited environments. It further suggests that the architecture of young trees on restored sites may need to change again if they are to survive likely longer-term changes in resource availability.

  17. Effect of Multi-Axial Loading on Residual Strain Tensor for 12L14 Steel Alloy

    Science.gov (United States)

    Bunn, Jeffrey R.; Penumadu, Dayakar; Lou, Xin; Hubbard, Camden R.

    2014-08-01

    Evaluating the state of residual strain or stress is critically important for structural materials and for reliable design of complex shape components that need to function in extreme environment subjected to large thermo-mechanical loading. When residual stress state is superposed to external loads, it can lead to reduction or increase in failure strength. Past diffraction studies for evaluating the residual strain state involved measuring lattice spacings in three orthogonal directions and do not often correspond to principal directions. To completely resolve the state of strain at a given location, a full strain tensor must be determined. This is especially important when characterizing materials or metallic components exposed to biaxial or complex loading. Neutron diffraction at the second Generation Neutron Residual Stress Facility (NRSF2) at Oak Ridge National Laboratory is used in this study to measure strain tensors associated with different modes of stress path. Hollow cylinder steel samples with 2 mm wall thickness are subjected to either pure axial extension or pure torsion to simulate multi-axial loading conditions. A virgin sample that is not subjected to any deformation, but subjected to identical manufacturing conditions and machining steps involved to obtain hollow cylinder geometry is used for obtaining reference d-spacing for given hkl planes at target spatial location(s). The two samples which are subjected to either pure tension or torsion are loaded to a deformation state that corresponded to equal amount of octahedral shear strain which is an invariant. This procedure is used so that a basis for comparison between the two samples can be made to isolate the stress path effects. A 2-circle Huber orienteer is used to obtain strain measurements on identical gauge volume at a series of φ and ψ values. The residual state of stress tensor corresponding to ex situ (upon unloading) conditions is presented for three lattice planes (211, 110, 200) for

  18. The elimination of positive priming with increasing prime duration reflects a transition from perceptual fluency to disfluency rather than bias against primed words.

    Science.gov (United States)

    Potter, Kevin W; Donkin, Chris; Huber, David E

    2018-03-01

    With immediate repetition priming of forced choice perceptual identification, short prime durations produce positive priming (i.e., priming the target leads to higher accuracy, while priming the foil leads to lower accuracy). Many theories explain positive priming following short duration primes as reflecting increased perceptual fluency for the primed target (i.e., decreased identification latency). However, most studies only examine either accuracy or response times, rather than considering the joint constraints of response times and accuracy to properly address the role of decision biases and response caution. This is a critical oversight because several theories propose that the transition to negative priming following a long duration prime reflects a decision strategy to compensate for the effect of increased perceptual fluency. In contrast, the nROUSE model of Huber and O'Reilly (2003) explains this transition as reflecting perceptual habituation, and thus a change to perceptual disfluency. We confirmed this prediction by applying a sequential sampling model (the diffusion race model) to accuracy and response time distributions from a new single item same-different version of the priming task. In this way, we measured strategic biases and perceptual fluency in each condition for each subject. The nROUSE model was only applied to accuracy from the original forced-choice version of the priming task. This application of nROUSE produced separate predictions for each subject regarding the degree of fluency and disfluency in each condition, and these predictions were confirmed by the drift rate parameters (i.e., fluency) from the response time model in contrast to the threshold parameters (i.e., bias). Copyright © 2017 Elsevier Inc. All rights reserved.

  19. Comparing different kinds of words and word-word relations to test an habituation model of priming.

    Science.gov (United States)

    Rieth, Cory A; Huber, David E

    2017-06-01

    Huber and O'Reilly (2003) proposed that neural habituation exists to solve a temporal parsing problem, minimizing blending between one word and the next when words are visually presented in rapid succession. They developed a neural dynamics habituation model, explaining the finding that short duration primes produce positive priming whereas long duration primes produce negative repetition priming. The model contains three layers of processing, including a visual input layer, an orthographic layer, and a lexical-semantic layer. The predicted effect of prime duration depends both on this assumed representational hierarchy and the assumption that synaptic depression underlies habituation. The current study tested these assumptions by comparing different kinds of words (e.g., words versus non-words) and different kinds of word-word relations (e.g., associative versus repetition). For each experiment, the predictions of the original model were compared to an alternative model with different representational assumptions. Experiment 1 confirmed the prediction that non-words and inverted words require longer prime durations to eliminate positive repetition priming (i.e., a slower transition from positive to negative priming). Experiment 2 confirmed the prediction that associative priming increases and then decreases with increasing prime duration, but remains positive even with long duration primes. Experiment 3 replicated the effects of repetition and associative priming using a within-subjects design and combined these effects by examining target words that were expected to repeat (e.g., viewing the target word 'BACK' after the prime phrase 'back to'). These results support the originally assumed representational hierarchy and more generally the role of habituation in temporal parsing and priming. Copyright © 2017 Elsevier Inc. All rights reserved.

  20. Risk factors for upper extremity musculoskeletal symptoms among call center employees.

    Science.gov (United States)

    d'Errico, Angelo; Caputo, Patrizia; Falcone, Umberto; Fubini, Lidia; Gilardi, Luisella; Mamo, Carlo; Migliardi, Alessandro; Quarta, Denis; Coffano, Elena

    2010-01-01

    To investigate the prevalence of musculoskeletal symptoms in the upper extremity (UE) in a sample of Italian call center (CC) operators, and the relationship between the symptoms and potential workplace risk factors. During 2005-2006, 775 workers from seven CCs in the Turin area participated in a questionnaire survey of exposure to ergonomic, organizational and psychosocial factors at work, socio-demographics, lifestyle, symptoms and diseases. Musculoskeletal symptoms were defined as self-reported musculoskeletal symptoms in the UE during the previous 28 days, for which a physician was consulted and/or drugs were taken. Relative risks were estimated through Poisson regression models with the Huber-White sandwich estimator of variance. Overall, 45% of workers reported UE symptoms in the last four weeks. Symptoms in the neck were the most prevalent (39%), followed by the shoulder (22%), hand-wrist (10%) and elbow (4%). Among workplace risk factors, neck-shoulder symptoms were associated with low job control, elevated noise, poor desk lighting and impossibility to lean back while sitting; whereas elbow-hand/wrist symptoms were associated with short intervals between calls, insufficient working space, lack of forearm support, job insecurity and long seniority in the CC industry. The high prevalence of UE symptoms in this sample was similar to that reported by other studies conducted in this industry. Our results confirm previously reported associations, such as poor characteristics of the workstation and psychological stressors. The striking difference between the set of risk factors for neck-shoulder and elbow/wrist-hand symptoms indicates that the two regions should be investigated separately.

  1. Personalized cancer care conference.

    Science.gov (United States)

    Zänker, Kurt S; Mihich, Enrico; Huber, Hans-Peter; Borresen-Dale, Anne-Lise

    2013-04-29

    The Oslo University Hospital (Norway), the K.G. Jebsen Centre for Breast Cancer Research (Norway), The Radiumhospital Foundation (Norway) and the Fritz-Bender-Foundation (Germany) designed under the conference chairmen (E. Mihich, K.S. Zänker, A.L. Borresen-Dale) and advisory committee (A. Borg, Z. Szallasi, O. Kallioniemi, H.P. Huber) a program at the cutting edge of "PERSONALIZED CANCER CARE: Risk prediction, early diagnosis, progression and therapy resistance." The conference was held in Oslo from September 7 to 9, 2012 and the science-based presentations concerned six scientific areas: (1) Genetic profiling of patients, prediction of risk, late side effects; (2) Molecular profiling of tumors and metastases; (3) Tumor-host microenvironment interaction and metabolism; (4) Targeted therapy; (5) Translation and (6) Informed consent, ethical challenges and communication. Two satellite workshops on (i) Ion Ampliseq-a novel tool for large scale mutation detection; and (ii) Multiplex RNA ISH and tissue homogenate assays for cancer biomarker validation were additionally organized. The report concludes that individual risk prediction in carcinogenesis and/or metastatogenesis based on polygenic profiling may be useful for intervention strategies for health care and therapy planning in the future. To detect distinct and overlapping DNA sequence alterations in tumor samples and adjacent normal tissues, including point mutations, small insertions or deletions, copy number changes and chromosomal rearrangements will eventually make it possible to design personalized management plans for individualized patients. However, large individualized datasets need a new approach in bio-information technology to reduce this enormous data dimensionally to simply working hypotheses about health and disease for each individual.

  2. Personalized Cancer Care Conference

    Directory of Open Access Journals (Sweden)

    Hans-Peter Huber

    2013-04-01

    Full Text Available The Oslo University Hospital (Norway, the K.G. Jebsen Centre for Breast Cancer Research (Norway, The Radiumhospital Foundation (Norway and the Fritz-Bender-Foundation (Germany designed under the conference chairmen (E. Mihich, K.S. Zänker, A.L. Borresen-Dale and advisory committee (A. Borg, Z. Szallasi, O. Kallioniemi, H.P. Huber a program at the cutting edge of “PERSONALIZED CANCER CARE: Risk prediction, early diagnosis, progression and therapy resistance.” The conference was held in Oslo from September 7 to 9, 2012 and the science-based presentations concerned six scientific areas: (1 Genetic profiling of patients, prediction of risk, late side effects; (2 Molecular profiling of tumors and metastases; (3 Tumor-host microenvironment interaction and metabolism; (4 Targeted therapy; (5 Translation and (6 Informed consent, ethical challenges and communication. Two satellite workshops on (i Ion Ampliseq—a novel tool for large scale mutation detection; and (ii Multiplex RNA ISH and tissue homogenate assays for cancer biomarker validation were additionally organized. The report concludes that individual risk prediction in carcinogenesis and/or metastatogenesis based on polygenic profiling may be useful for intervention strategies for health care and therapy planning in the future. To detect distinct and overlapping DNA sequence alterations in tumor samples and adjacent normal tissues, including point mutations, small insertions or deletions, copy number changes and chromosomal rearrangements will eventually make it possible to design personalized management plans for individualized patients. However, large individualized datasets need a new approach in bio-information technology to reduce this enormous data dimensionally to simply working hypotheses about health and disease for each individual.

  3. Mortality Reduction for Fever, Hyperglycemia, and Swallowing Nurse-Initiated Stroke Intervention: QASC Trial (Quality in Acute Stroke Care) Follow-Up.

    Science.gov (United States)

    Middleton, Sandy; Coughlan, Kelly; Mnatzaganian, George; Low Choy, Nancy; Dale, Simeon; Jammali-Blasi, Asmara; Levi, Chris; Grimshaw, Jeremy M; Ward, Jeanette; Cadilhac, Dominique A; McElduff, Patrick; Hiller, Janet E; D'Este, Catherine

    2017-05-01

    Implementation of nurse-initiated protocols to manage fever, hyperglycemia, and swallowing dysfunction decreased death and disability 90 days poststroke in the QASC trial (Quality in Acute Stroke Care) conducted in 19 Australian acute stroke units (2005-2010). We now examine long-term all-cause mortality. Mortality was ascertained using Australia's National Death Index. Cox proportional hazards regression compared time to death adjusting for correlation within stroke units using the cluster sandwich (Huber-White estimator) method. Primary analyses included treatment group only unadjusted for covariates. Secondary analysis adjusted for age, sex, marital status, education, and stroke severity using multiple imputation for missing covariates. One thousand and seventy-six participants (intervention n=600; control n=476) were followed for a median of 4.1 years (minimum 0.3 to maximum 70 months), of whom 264 (24.5%) had died. Baseline demographic and clinical characteristics were generally well balanced by group. The QASC intervention group had improved long-term survival (>20%), but this was only statistically significant in adjusted analyses (unadjusted hazard ratio [HR], 0.79; 95% confidence interval [CI], 0.58-1.07; P =0.13; adjusted HR, 0.77; 95% CI, 0.59-0.99; P =0.045). Older age (75-84 years; HR, 4.9; 95% CI, 2.8-8.7; P stroke severity (HR, 1.5; 95% CI, 1.3-1.9; P disease (including stroke) was listed either as the primary or secondary cause of death in 80% (211/264) of all deaths. Our results demonstrate the potential long-term and sustained benefit of nurse-initiated multidisciplinary protocols for management of fever, hyperglycemia, and swallowing dysfunction. These protocols should be a routine part of acute stroke care. URL: http://www.anzctr.org.au. Unique identifier: ACTRN12608000563369. © 2017 American Heart Association, Inc.

  4. REVIEW OF TURKISH SCIENTIFIC TEXTS ON TEACHING TURKISH AS A FOREIGN LANGUAGE

    Directory of Open Access Journals (Sweden)

    Kamil İŞERİ

    2017-04-01

    Full Text Available The functions of the scientific texts under the informative text type are referring to the results of a research, reinterpreting certain research results, or reaching original results. When literature reviewed, it is observed that although the studies for creating scientific text have increased recently, it seems that the desired outcome is not achieved. In addition to teaching Turkish as a mother tongue, teaching it as a foreign language has also started to gain importance. For this reason, it is necessary to carry out such studies in order to increase the productivity in the field of teaching Turkish to foreigners. The aim of the study is to determine the orientations related to the rhetorical arrangement of the scientific texts on teaching of Turkish as a foreign language, which are included in the textbooks of the International Training and Education of Turkish Language Congresses as a full text and to evaluate these texts in terms of their specific functions. Findings and determinations revealed in the study are based on a corpus comprised of a total of 64 texts included in proceedings books, written in Turkish and related to teaching Turkish to foreigners. The study is structured by qualitative research method. The data were obtained by qualitative data collection techniques through document scanning and were examined within the framework of the scientific text criteria specified by Huber and Uzun (2001. Two out of 64 articles in the sample of the study revealed that none of the expected functional steps in the introduction, main and final sections were found. No work has been found that covers all of the functional steps in the introduction, main and final sections.

  5. COMPARACIÓN DE TÉCNICAS DE ESTIMACIÓN DE VOLUMEN FUSTAL TOTAL PARA CINCO ESPECIES DE PINO DE DURANGO, MÉXICO

    Directory of Open Access Journals (Sweden)

    S. Corral-Rivas

    2009-01-01

    Full Text Available En este estudio se compararon diez técnicas de cubicación de volumen fustal total sin corteza para cinco especies de pino en Durango, México. El volumen de cada árbol se estimó con las ecuaciones convencionales de: 1 Smalian, 2 Newton y 3 Sólidos de revolución y con los modelos de ahusamiento 4 Amidon, 5 Biging, 6 Clutter, 7 Kozak 1, 8 Kozak 2, 9 Newnham y 10 Rustagi y Loveless. Los modelos convencionales de: a Schumacher y Hall, b Spurr, c Spurr transformado, d Honer, e Sloboda, f Naslund y g Australiana se ajustaron a los volúmenes estimados por las técnicas descritas con el uso de las variables independientes diámetro normal y altura total. Los modelos de volumen fueron comparados por medio de un análisis de covarianza con la finalidad de utilizar aquellos comparables con la estimación del volumen por la ecuación convencional de Smalian. Los resultados mostraron que las ecuaciones de ahusamiento de Amidon y Biging proveen volúmenes comparables al nivel del árbol o del rodal con los generados por las ecuaciones de volumen convencionales que se alimentan con el volumen estimado por la ecuación de Smalian, de Huber o de Newton. Por esta razón, los dos modelos se recomiendan para estimar los volúmenes totales ycomerciales de las cinco especies de pino de Durango, México.

  6. Sociocultural and linguistic boundaries influencing intercultural communication between nurses and Moroccan patients in southern Spain: a focused ethnography.

    Science.gov (United States)

    Plaza Del Pino, Fernando J; Soriano, Encarnación; Higginbottom, Gina Ma

    2013-01-01

    During the last 25 years, cultural diversity has increased substantially with global migration. In more recent years this has become highly evident in the south of Spain with its steadily increasing Moroccan population. The accompanying differences in ethnocultural values and traditions between the host and newcomer populations may greatly impact healthcare interactions and thus also effective provision of care. This landscape provides for excellent exploration of intercultural communication in healthcare settings and elucidation of possible ways to overcome existing barriers to provision of culturally competent care by nurses. This study aimed to ascertain how nurses perceive their intercultural communication with Moroccan patients and what barriers are evident which may be preventing effective communication and care. A focused ethnography was conducted with semi-structured interviews of 32 nurses in three public hospitals in southern Spain. Interviews were audio-recorded and transcribed verbatim before undergoing translation and back-translation between Spanish and English. Data was managed, classified and ordered with the aid of AQUAD.6 (Günter L. Huber, Tübingen, Germany) qualitative data analysis software. As an important dimension of cultural competence, findings from the interviews with nurses in this study were interpreted within the framework of intercultural communication. Various barriers, for which we have termed "boundaries", seem to exist preventing effective communication between nurses and their patients. The substantial language barrier seems to negatively affect communication. Relations between the nurses and their Moroccan patients are also marked by prejudices and social stereotypes which likely compromise the provision of culturally appropriate care. The language barrier may compromise nursing care delivery and could be readily overcome by implementation of professional interpretation within the hospital settings. Moreover, it is essential

  7. A STATISTICAL RECONSTRUCTION OF THE PLANET POPULATION AROUND KEPLER SOLAR-TYPE STARS

    International Nuclear Information System (INIS)

    Silburt, Ari; Wu, Yanqin; Gaidos, Eric

    2015-01-01

    Using the cumulative catalog of planets detected by the NASA Kepler mission, we reconstruct the intrinsic occurrence of Earth- to Neptune-size (1-4 R ⊕ ) planets and their distributions with radius and orbital period. We analyze 76,711 solar-type (0.8 < R * /R ☉ < 1.2) stars with 430 planets on 20-200 day orbits, excluding close-in planets that may have been affected by the proximity to the host star. Our analysis considers errors in planet radii and includes an ''iterative simulation'' technique that does not bin the data. We find a radius distribution that peaks at 2-2.8 Earth radii, with lower numbers of smaller and larger planets. These planets are uniformly distributed with logarithmic period, and the mean number of such planets per star is 0.46 ± 0.03. The occurrence is ∼0.66 if planets interior to 20 days are included. We estimate the occurrence of Earth-size planets in the ''habitable zone'' (defined as 1-2 R ⊕ , 0.99-1.7 AU for solar-twin stars) as 6.4 −1.1 +3.4 %. Our results largely agree with those of Petigura et al., although we find a higher occurrence of 2.8-4 Earth-radii planets. The reasons for this excess are the inclusion of errors in planet radius, updated Huber et al. stellar parameters, and also the exclusion of planets that may have been affected by proximity to the host star

  8. Complement-induced activation of MAPKs and Akt during sepsis: role in cardiac dysfunction.

    Science.gov (United States)

    Fattahi, Fatemeh; Kalbitz, Miriam; Malan, Elizabeth A; Abe, Elizabeth; Jajou, Lawrence; Huber-Lang, Markus S; Bosmann, Markus; Russell, Mark W; Zetoune, Firas S; Ward, Peter A

    2017-09-01

    Polymicrobial sepsis in mice causes myocardial dysfunction after generation of the complement anaphylatoxin, complement component 5a (C5a). C5a interacts with its receptors on cardiomyocytes (CMs), resulting in redox imbalance and cardiac dysfunction that can be functionally measured and quantitated using Doppler echocardiography. In this report we have evaluated activation of MAPKs and Akt in CMs exposed to C5a in vitro and after cecal ligation and puncture (CLP) in vivo In both cases, C5a in vitro caused activation (phosphorylation) of MAPKs and Akt in CMs, which required availability of both C5a receptors. Using immunofluorescence technology, activation of MAPKs and Akt occurred in left ventricular (LV) CMs, requiring both C5a receptors, C5aR1 and -2. Use of a water-soluble p38 inhibitor curtailed activation in vivo of MAPKs and Akt in LV CMs as well as the appearance of cytokines and histones in plasma from CLP mice. When mouse macrophages were exposed in vitro to LPS, activation of MAPKs and Akt also occurred. The copresence of the p38 inhibitor blocked these activation responses. Finally, the presence of the p38 inhibitor in CLP mice reduced the development of cardiac dysfunction. These data suggest that polymicrobial sepsis causes cardiac dysfunction that appears to be linked to activation of MAPKs and Akt in heart.-Fattahi, F., Kalbitz, M., Malan, E. A., Abe, E., Jajou, L., Huber-Lang, M. S., Bosmann, M., Russell, M. W., Zetoune, F. S., Ward, P. A. Complement-induced activation of MAPKs and Akt during sepsis: role in cardiac dysfunction. © FASEB.

  9. Aportaciones de los maestros en formación a la construcción del perfil del docente competente desde la reflexión en el aula

    Directory of Open Access Journals (Sweden)

    Vicente Carrasco Embuena

    2012-11-01

    Full Text Available Este artículo recoge los resultados de un estudio realizado para conocer cuál es el perfil del docente competente, mediante la identificación y descripción de las cualidades que los estudiantes de Magisterio atribuyen a los buenos profesores. Se basa en la información aportada por un grupo de 73 alumnos/as de segundo curso de la Diplomatura de Magisterio de Educación Física, de la Universidad de Alicante, del curso académico 2009/10, que atendieron la propuesta de escribir sendas cartas a dos profesores que les hubiesen impartido docencia en cualquier etapa de su trayectoria académica: una dirigida al profesor/a que les impactó positivamente y otra a aquel del que no guardaran buen recuerdo. Por cuestión de espacio, se aportan los resultados de la investigación realizada con las primeras, que se ha abordado con una metodología cualitativa (análisis de contenido y utilizando el programa AQUAD 6 (Huber, 2006. Los resultados facilitan indicios para identificar el perfil del docente competente para formar a los ciudadanos en la sociedad de la información, en base a cinco dimensiones: cualidades personales, aptitud pedagógica, calidad de sus procesos de interacción, tipología de la formación que promueve y repercusión de su actuación sobre el alumnado. Estas características coinciden significativamente con las que se le atribuyen en la literatura científica y en los planes de estudio de los Grados de Maestro. 

  10. The Paleocene Eocene carbon isotope excursion in higher plant organic matter: Differential fractionation of angiosperms and conifers in the Arctic

    Science.gov (United States)

    Schouten, Stefan; Woltering, Martijn; Rijpstra, W. Irene C.; Sluijs, Appy; Brinkhuis, Henk; Sinninghe Damsté, Jaap S.

    2007-06-01

    A study of upper Paleocene-lower Eocene (P-E) sediments deposited on the Lomonosov Ridge in the central Arctic Ocean reveals relatively high abundances of terrestrial biomarkers. These include dehydroabietane and simonellite derived from conifers (gymnosperms) and a tetra-aromatic triterpenoid derived from angiosperms. The relative percentage of the angiosperm biomarker of the summed angiosperm + conifer biomarkers was increased at the end of the Paleocene-Eocene thermal maximum (PETM), different when observed with pollen counts which showed a relative decrease in angiosperm pollen. Stable carbon isotopic analysis of these biomarkers shows that the negative carbon isotope excursion (CIE) during the PETM amounts to 3‰ for both conifer biomarkers, dehydroabietane and simonellite, comparable to the magnitude of the CIE inferred from marine carbonates, but significantly lower than the 4.5‰ of the terrestrial C 29n-alkane [M. Pagani, N. Pedentchouk, M. Huber, A. Sluijs, S. Schouten, H. Brinkhuis, J.S. Sinninghe Damsté, G.R. Dickens, and the IODP Expedition 302 Expedition Scientists (2006), Arctic's hydrology during global warming at the Paleocene-Eocene thermal maximum. Nature, 442, 671-675.], which is a compound sourced by both conifers and angiosperms. Conspicuously, the angiosperm-sourced aromatic triterpane shows a much larger CIE of 6‰ and suggests that angiosperms increased in their carbon isotopic fractionation during the PETM. Our results thus indicate that the 4.5‰ C 29n-alkane CIE reported previously represents the average CIE of conifers and angiosperms at this site and suggest that the large and variable CIE observed in terrestrial records may be partly explained by the variable contributions of conifers and angiosperms. The differential response in isotopic fractionation of angiosperms and conifers points to different physiological responses of these vegetation types to the rise in temperature, humidity, and greenhouse gases during the PETM.

  11. The status of conservation of urban forests in eastern Amazonia

    Directory of Open Access Journals (Sweden)

    DD Amaral

    Full Text Available This study aims to identify the remnant tree flora in six forest fragments in the metropolitan area of Belém and to analyze these fragments in terms of biological conservation, species richness and diversity in the local urban landscape. The fragments and their respective sampling areas were as follows: Amafrutas reserve (15 ha, Trambioca Is. reserve (2 ha, Bosque Rodrigues Alves city park (15 ha, Combu Is. reserve (10 ha, Gunma Park reserve (10 ha and Mocambo reserve (5 ha. Inventories were built from lineal plots of 250 m² and included trees with DBH equal to or greater than 10 cm at a height of 1.3 m above ground. Sixty-nine families and 759 species, of which eight were officially listed as endangered (Brazilian National Flora: Ministry of Environment, Normative Instruction of September, 2008; Pará State Flora: Decree Nº. 802 of February 2008 were recorded. These endangered species are: Aspidosperma desmanthum Benth. ex Müll. Arg. (Apocynaceae, Cedrela odorata L. (Meliaceae, Eschweilera piresii S.A Mori (Lecythidaceae, Euxylophora paraensis Huber (Rutaceae, Hymenolobium excelsum Ducke (Leguminosae, Manilkara huberi (Ducke Chevalier (Sapotaceae, Tabebuia impetiginosa (Mart. ex DC. Standl. (Bignoniaceae, Mezilaurus itauba (Meisn. Taub. ex Mez (Lauraceae and Qualea coerulea Aubl. (Vochysiaceae. Emergency actions such as implementing management plans for already existing Conservation Units, the creation of new such units in areas of primary forest fragments (as in the case of the Amafrutas reserve, as well as the intensification of actions of surveillance and monitoring, should be undertaken by Federal, State, and Municipal environmental agencies so as to ensure the conservation of these last primary forest remnants in the metropolitan area of Belém.

  12. Peptide-level Robust Ridge Regression Improves Estimation, Sensitivity, and Specificity in Data-dependent Quantitative Label-free Shotgun Proteomics*

    Science.gov (United States)

    Goeminne, Ludger J. E.; Gevaert, Kris; Clement, Lieven

    2016-01-01

    Peptide intensities from mass spectra are increasingly used for relative quantitation of proteins in complex samples. However, numerous issues inherent to the mass spectrometry workflow turn quantitative proteomic data analysis into a crucial challenge. We and others have shown that modeling at the peptide level outperforms classical summarization-based approaches, which typically also discard a lot of proteins at the data preprocessing step. Peptide-based linear regression models, however, still suffer from unbalanced datasets due to missing peptide intensities, outlying peptide intensities and overfitting. Here, we further improve upon peptide-based models by three modular extensions: ridge regression, improved variance estimation by borrowing information across proteins with empirical Bayes and M-estimation with Huber weights. We illustrate our method on the CPTAC spike-in study and on a study comparing wild-type and ArgP knock-out Francisella tularensis proteomes. We show that the fold change estimates of our robust approach are more precise and more accurate than those from state-of-the-art summarization-based methods and peptide-based regression models, which leads to an improved sensitivity and specificity. We also demonstrate that ionization competition effects come already into play at very low spike-in concentrations and confirm that analyses with peptide-based regression methods on peptide intensity values aggregated by charge state and modification status (e.g. MaxQuant's peptides.txt file) are slightly superior to analyses on raw peptide intensity values (e.g. MaxQuant's evidence.txt file). PMID:26566788

  13. Peptide-level Robust Ridge Regression Improves Estimation, Sensitivity, and Specificity in Data-dependent Quantitative Label-free Shotgun Proteomics.

    Science.gov (United States)

    Goeminne, Ludger J E; Gevaert, Kris; Clement, Lieven

    2016-02-01

    Peptide intensities from mass spectra are increasingly used for relative quantitation of proteins in complex samples. However, numerous issues inherent to the mass spectrometry workflow turn quantitative proteomic data analysis into a crucial challenge. We and others have shown that modeling at the peptide level outperforms classical summarization-based approaches, which typically also discard a lot of proteins at the data preprocessing step. Peptide-based linear regression models, however, still suffer from unbalanced datasets due to missing peptide intensities, outlying peptide intensities and overfitting. Here, we further improve upon peptide-based models by three modular extensions: ridge regression, improved variance estimation by borrowing information across proteins with empirical Bayes and M-estimation with Huber weights. We illustrate our method on the CPTAC spike-in study and on a study comparing wild-type and ArgP knock-out Francisella tularensis proteomes. We show that the fold change estimates of our robust approach are more precise and more accurate than those from state-of-the-art summarization-based methods and peptide-based regression models, which leads to an improved sensitivity and specificity. We also demonstrate that ionization competition effects come already into play at very low spike-in concentrations and confirm that analyses with peptide-based regression methods on peptide intensity values aggregated by charge state and modification status (e.g. MaxQuant's peptides.txt file) are slightly superior to analyses on raw peptide intensity values (e.g. MaxQuant's evidence.txt file). © 2016 by The American Society for Biochemistry and Molecular Biology, Inc.

  14. Modelling of friction anisotropy of deepdrawing sheet in ABAQUS/EXPLICIT

    Directory of Open Access Journals (Sweden)

    F. Stachowicz

    2010-07-01

    Full Text Available This paper presents the experimental and numerical results of rectangular cup drawing of steel sheets. The aim of the experimental study was to analyze material behavior under deformation. The received results were further used to verify the results from numerical simulation by taking friction and material anisotropy into consideration. A 3D parametric finite element (FE model was built using the FE-package ABAQUS/Standard. ABAQUS allows analyzing physical models of real processes putting special emphasis on geometrical non-linearities caused by large deformations, material non-linearities and complex friction conditions. Frictional properties of the deep drawing quality steel sheet were determined by using the pin-on-disc tribometer. It shows that the friction coefficient value depends on the measured angle from the rolling direction and corresponds to the surface topography. A quadratic Hill anisotropic yield criterion was compared with Huber-Mises yield criterion having isotropic hardening. Plastic anisotropy is the result of the distortion of the yield surface shape due to the material microstructural state. The sensitivity of constitutive laws to the initial data characterizing material behavior isalso presented. It is found that plastic anisotropy of the matrix in ductile sheet metal has influence on deformation behavior of the material. If the material and friction anisotropy are taken into account in the finite element analysis, this approach undoubtedly gives the most approximate numerical results to real processes. This paper is the first part of the study of numerical investigation using ABAQUS and mainly deals with the most influencing parameters in a forming process to simulate the sheet metal forming of rectangular cup.

  15. Mulga, a major tropical dry open forest of Australia: recent insights to carbon and water fluxes

    Science.gov (United States)

    Eamus, Derek; Huete, Alfredo; Cleverly, James; Nolan, Rachael H.; Ma, Xuanlong; Tarin, Tonantzin; Santini, Nadia S.

    2016-12-01

    Mulga, comprised of a complex of closely related Acacia spp., grades from a low open forest to tall shrublands in tropical and sub-tropical arid and semi-arid regions of Australia and experiences warm-to-hot annual temperatures and a pronounced dry season. This short synthesis of current knowledge briefly outlines the causes of the extreme variability in rainfall characteristic of much of central Australia, and then discusses the patterns and drivers of variability in carbon and water fluxes of a central Australian low open Mulga forest. Variation in phenology and the impact of differences in the amount and timing of precipitation on vegetation function are then discussed. We use field observations, with particular emphasis on eddy covariance data, coupled with modelling and remote sensing products to interpret inter-seasonal and inter-annual patterns in the behaviour of this ecosystem. We show that Mulga can vary between periods of near carbon neutrality to periods of being a significant sink or source for carbon, depending on both the amount and timing of rainfall. Further, we demonstrate that Mulga contributed significantly to the 2011 global land sink anomaly, a result ascribed to the exceptional rainfall of 2010/2011. Finally, we compare and contrast the hydraulic traits of three tree species growing close to the Mulga and show how each species uses different combinations of trait strategies (for example, sapwood density, xylem vessel implosion resistance, phenological guild, access to groundwater and Huber value) to co-exist in this semi-arid environment. Understanding the inter-annual variability in functional behaviour of this important arid-zone biome and mechanisms underlying species co-existence will increase our ability to predict trajectories of carbon and water balances for future changing climates.

  16. Researching Entrepreneurship and Complimenting it with Entrepreneurial Behaviour Triggering Components

    Directory of Open Access Journals (Sweden)

    Karine Oganisjana

    2013-11-01

    Full Text Available The purpose of the article is to present the logics, course and outcomes of the analysis of the matter of entrepreneurship which was carried out within the doctoral research “The development of students’ enterprise in study process” conducted in the University of Latvia (2004-2009. The methodology comprises literature analysis and inductive qualitative content analysis of the text of fifty interpretations of the matter of entrepreneurship and enterprise by using Phillip Mayring’s ‘Step model of inductive category development’ (Mayring, 2000 and AQUAD 6.0 (Analysis of Qualitative Data software (Huber & Gürtler, 2004. The scientific aim is to analyze literature on entrepreneurship; classify the variety of approaches to the comprehension of entrepreneurship, admitted in different regions of the world; determine the structure of entrepreneurship and the components which have entrepreneurial behaviour triggering effect. The findings reveal a number of paradoxes and contradictions between different entrepreneurship schools and approaches, which are to be overcome by maximal integration of these positions into a holistic system. Concerning the structure of entrepreneurship, some components which previously haven’t been paid worthy attention to, were determined and analysed in the context of today’s topicality of developing students’ entrepreneurial mindsets and behaviours. Conclusions made concern the restrictions of the EU comprehension of entrepreneurship as one of the eight lifelong learning key competences consisting of knowledge, skills and attitudes. It was shown that the concept of entrepreneurship should be complemented with behavioural and motivational components, which play a crucial role as elements of an entrepreneurship triggering and developing mechanism. As for the content of entrepreneurial knowledge, it remains vague and still ought to be researched additionally.

  17. The invasion of five alien species in the Delta do Parnaíba Environmental Protection Area, Northeastern Brazil

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    Daniel Loebmann

    2010-09-01

    Full Text Available Marine biological invasions have been regarded as one of the major causes of native biodiversity loss, with shipping and aquaculture being the leading contributors for the introductions of alien species in aquatic ecosystems. In the present study, five aquatic alien species (one mollusk, three crustaceans and one fish species were detected during dives, shore searches and from the fisheries on the coast of the Delta do Parnaíba Environmental Protection Area, in the States of Piauí and Maranhão, Northeastern Brazil. The species were the bicolor purse-oyster Isognomon bicolor, the whiteleg shrimp Litopenaeus vannamei, the giant river prawn Macrobrachium rosenbergii, the Indo-Pacific swimming crab Charybdis hellerii and, the muzzled blenny Omobranchus punctatus. Ballast water (I. bicolor, C. hellerii, and O. punctatus and aquaculture activities (L. vannamei and M. rosenbergii in adjacent areas are the most likely vectors of introduction. All exotic species found have potential impact risks to the environment because they are able to compete against native species for resources (food and habitat. Isognomon bicolor share the same habitat and food items with the native bivalve species of mussels and barnacles. Litopenaeus vannamei share the same habitat and food items with the native penaeids such as the pinkspot shrimp Farfantepenaeus brasiliensis, the Southern brown shrimp Farfantepenaeus subtilis, and the Southern white shrimp Litopenaeus schmitti, and in the past few years L. vannamei was responsible for a viral epidemics in the cultivation tanks that could be transmitted to native penaeid shrimps. Charybdis hellerii is also able to cause impacts on the local fisheries as the species can decrease the populations of native portunid crabs which are commercialized in the studied region. Macrobrachium rosenbergii may be sharing natural resources with the Amazon River prawn Macrobrachium amazonicum. Omobranchus punctatus shares habit with the native

  18. ASPECTOS ECONÔMICOS E HIGIÊNICO-SANITÁRIOS DA COMERCIALIZAÇÃO DE CAMARÕES DE ÁGUA DOCE EM FEIRAS LIVRES DE MACAPÁ E SANTANA, ESTADO DO AMAPÁ

    Directory of Open Access Journals (Sweden)

    Jô de Farias Lima

    2014-04-01

    Full Text Available No estado do Amapá, o comercio de camarões de água doce é realizada em feiras livres, bares, restaurantes, supermercados e peixarias, onde envolve um número significativo de pessoas denotando sua importância social e econômica. A venda de camarões de água doce e seus derivados têm crescido substancialmente nas últimas décadas. No entanto, os protocolos de preparação, manuseio e conservação realizados sem considerações de higiene muitas vezes faz o consumo de camarões  perigosos para os consumidores. O objetivo deste estudo foi diagnosticar os aspectos higiênico-sanitários no comércio de camarão de água doce, além de descrever a variação do preço e  dinâmica de fornecimento desse camarão, em feiras populares das cidades de Macapá e Santana entre Fevereiro e novembro de 2011. O ambiente visual, a construção, a instalação, o equipamento, o mobiliário e utensílios, a presença de vetores e pragas urbanas, o abastecimento de água, a gestão de resíduos e os manipuladores foram analisados de acordo com com base nas recomendações da Resolução - RDC n º 216/04 da Agência Nacional de Vigilância Sanitária (ANVISA. Os resultados demonstram que, apesar de a comercialização de camarão se movem quantidades significativas de recursos, as feiras Macapa e Santana não mostraram condições de infra-estrutura e higiene adequados. A manipulação inadequada e higiene observada pode afetar a qualidade bioquímica e microbiológica de camarões comercializados e facilitar a transmissão de patógenos para os consumidores. As variações de preços dos camarões ao longo do ano estão diretamente relacionados com as variações sazonais de oferta, tamanho  e formas de comercialização, demonstrando claramente a ocorrência de um período de safra na região. Macrobrachium amazonicum foi a espécie com maior variação de volume e de preço durante o estudo. Afuá foi a região com maior oferta em volume de camar

  19. GERMINAÇÃO EM SEMENTES DE ESPÉCIES FLORESTAIS DA MATA ATLÂNTICA (LEGUMINOSEAE SOB CONDIÇÕES DE CASA DE VEGETAÇÃO GERMINATION OF SEEDS IN NATIVE FOREST SPECIES (LEGUMINOSEAE UNDER GREENHOUSE CONDITIONS

    Directory of Open Access Journals (Sweden)

    Adriane Oliveira Cunha

    2007-09-01

    Full Text Available

    O presente estudo teve como finalidade avaliar tratamentos pré-germinativos visando superar a dormência de sementes de quatro leguminosas arbóreas nativas da Mata Atlântica brasileira. O experimento foi conduzido sob ambiente de casa de vegetação, no Centro de Ciências Agrárias da Universidade Federal da Paraíba, em Areia-PB, Brasil. As espécies estudadas foram jatobá (Hymenaea courbaril L., guapuruvu [Schizolobium parahyba (Vell. Blake], orelha-de-negro [Enterolobium contortisiliquum (Vell. Morong] e madeira-nova [Peltophorum dubium (Spreng. Taub]. Os tratamentos consistiram em: T1 - escarificação lateral; T2 - escarificação lateral + embebição por 24 horas à temperatura ambiente; T3 - imersão em água a 50°C até esfriamento; T4 -imersão em água a 60°C até esfriamento; T5 - imersão em água destilada por 24 horas à temperatura ambiente; T6 - testemunha. A semeadura foi efetuada em bandejas, mediante a utilização do substrato areia. As características avaliadas foram emergência e índice de velocidade de emergência. Concluiu-se que sementes de jatobá submetidas à escarificação, seguida de embebição, exibem plântulas mais vigorosas. A escarificação sem embebição pode ser recomendada como tratamento pré-germinativo para sementes de orelha-de-negro. Seguida ou não de embebição, a escarificação foi também eficiente na quebra de dormência de sementes de guapuruvu. Quanto à dormência de sementes de madeira-nova, nenhum tratamento foi eficiente para superá-la.

  20. Postabortion Care: 20 Years of Strong Evidence on Emergency Treatment, Family Planning, and Other Programming Components.

    Science.gov (United States)

    Huber, Douglas; Curtis, Carolyn; Irani, Laili; Pappa, Sara; Arrington, Lauren

    2016-09-28

    counseling and services before leaving the facility, especially because fertility returns rapidly (within 2 to 3 weeks); postabortion family planning services can be quickly replicated to multiple sites with high acceptance rates. Voluntary family planning uptake by method should always be monitored to document program and provider performance. In addition, vacuum aspiration and misoprostol should replace sharp curettage to treat incomplete abortion for women who meet eligibility criteria. © Huber et al.

  1. Treatment of Low Back Pain with a Digital Multidisciplinary Pain Treatment App: Short-Term Results.

    Science.gov (United States)

    Huber, Stephan; Priebe, Janosch A; Baumann, Kaja-Maria; Plidschun, Anne; Schiessl, Christine; Tölle, Thomas R

    2017-12-04

    -selected population of app users, an app digitalizing multidisciplinary rehabilitation for the self-management of LBP reduced user-reported pain levels significantly. The observed effect size was clinically relevant. Ongoing prospective RCTs will adjust for potential bias and selection effects. ©Stephan Huber, Janosch A Priebe, Kaja-Maria Baumann, Anne Plidschun, Christine Schiessl, Thomas R Tölle. Originally published in JMIR Rehabilitation and Assistive Technology (http://rehab.jmir.org), 04.12.2017.

  2. Estimating the prevalence of comorbid conditions and their effect on health care costs in patients with diabetes mellitus in Switzerland

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    Huber CA

    2014-10-01

    Full Text Available Carola A Huber,1 Peter Diem,2 Matthias Schwenkglenks,3 Roland Rapold,1 Oliver Reich1 1Department of Health Sciences, Helsana Group, Zürich, Switzerland; 2Department of Endocrinology, Diabetes and Clinical Nutrition, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland; 3Institute of Social and Preventive Medicine, University of Zürich, Zürich, Switzerland Background: Estimating the prevalence of comorbidities and their associated costs in patients with diabetes is fundamental to optimizing health care management. This study assesses the prevalence and health care costs of comorbid conditions among patients with diabetes compared with patients without diabetes. Distinguishing potentially diabetes- and nondiabetes-related comorbidities in patients with diabetes, we also determined the most frequent chronic conditions and estimated their effect on costs across different health care settings in Switzerland. Methods: Using health care claims data from 2011, we calculated the prevalence and average health care costs of comorbidities among patients with and without diabetes in inpatient and outpatient settings. Patients with diabetes and comorbid conditions were identified using pharmacy-based cost groups. Generalized linear models with negative binomial distribution were used to analyze the effect of comorbidities on health care costs. Results: A total of 932,612 persons, including 50,751 patients with diabetes, were enrolled. The most frequent potentially diabetes- and nondiabetes-related comorbidities in patients older than 64 years were cardiovascular diseases (91%, rheumatologic conditions (55%, and hyperlipidemia (53%. The mean total health care costs for diabetes patients varied substantially by comorbidity status (US$3,203–$14,223. Patients with diabetes and more than two comorbidities incurred US$10,584 higher total costs than patients without comorbidity. Costs were significantly higher in patients with

  3. Strontium isotope detection of brine contamination in the East Poplar oil field, Montana

    Science.gov (United States)

    Peterman, Zell E.; Thamke, Joanna N.; Futa, Kiyoto; Oliver, Thomas A.

    2010-01-01

    Brine contamination of groundwater in the East Poplar oil field was first documented in the mid-1980s by the U.S. Geological Survey by using hydrochemistry, with an emphasis on chloride (Cl) and total dissolved solids concentrations. Supply wells for the City of Poplar are located downgradient from the oil field, are completed in the same shallow aquifers that are documented as contaminated, and therefore are potentially at risk of being contaminated. In cooperation with the Office of Environmental Protection of the Fort Peck Tribes, groundwater samples were collected in 2009 and 2010 from supply wells, monitor wells, and the Poplar River for analyses of major and trace elements, including strontium (Sr) concentrations and isotopic compositions. The ratio of strontium-87 to strontium-86 (87Sr/86Sr) is used extensively as a natural tracer in groundwater to detect mixing among waters from different sources and to study the effects of water/rock interaction. On a plot of the reciprocal strontium concentration against the 87Sr/86Sr ratio, mixtures of two end members will produce a linear array. Using this plotting method, data for samples from most of the wells, including the City of Poplar wells, define an array with reciprocal strontium values ranging from 0.08 to 4.15 and 87Sr/86Sr ratios ranging from 0.70811 to 0.70828. This array is composed of a brine end member with an average 87Sr/86Sr of 0.70822, strontium concentrations in excess of 12.5 milligrams per liter (mg/L), and chloride concentrations exceeding 8,000 mg/L mixing with uncontaminated water similar to that in USGS06-08 with 18.0 mg/L chloride, 0.24 mg/L strontium, and a 87Sr/86Sr ratio of 0.70811. The position of samples from the City of Poplar public-water supply wells within this array indicates that brine contamination has reached all three wells. Outliers from this array are EPU-4G (groundwater from the Cretaceous Judith River Formation), brine samples from disposal wells (Huber 5-D and EPU 1-D

  4. Formation of halogenated acetones in the lower troposphere

    Science.gov (United States)

    Sattler, Tobias; Wittmer, Julian; Krause, Torsten; Schöler, Heinz Friedrich; Kamilli, Katharina; Held, Andreas; Zetzsch, Cornelius; Ofner, Johannes; Atlas, Elliot

    2015-04-01

    in minor concentrations in soil and water samples (maximum of 8.8 ng/g in soil and 0,012 ng/ml in water). [1] Huber et al., 2009, Environ.Sci.Technol., 43 (13), 4934-4939 [2] Wittmer et al., 2014, J. Phys. Chem. A, DOI: 10.1021/jp508006s [3] Burkholder et al., 2002, Geophysical Research Letters, 29 (17)

  5. Quantitative 3D-OCT motion correction with tilt and illumination correction, robust similarity measure and regularization.

    Science.gov (United States)

    Kraus, Martin F; Liu, Jonathan J; Schottenhamml, Julia; Chen, Chieh-Li; Budai, Attila; Branchini, Lauren; Ko, Tony; Ishikawa, Hiroshi; Wollstein, Gadi; Schuman, Joel; Duker, Jay S; Fujimoto, James G; Hornegger, Joachim

    2014-08-01

    Variability in illumination, signal quality, tilt and the amount of motion pose challenges for post-processing based 3D-OCT motion correction algorithms. We present an advanced 3D-OCT motion correction algorithm using image registration and orthogonal raster scan patterns aimed at addressing these challenges. An intensity similarity measure using the pseudo Huber norm and a regularization scheme based on a pseudo L0.5 norm are introduced. A two-stage registration approach was developed. In the first stage, only axial motion and axial tilt are coarsely corrected. This result is then used as the starting point for a second stage full optimization. In preprocessing, a bias field estimation based approach to correct illumination differences in the input volumes is employed. Quantitative evaluation was performed using a large set of data acquired from 73 healthy and glaucomatous eyes using SD-OCT systems. OCT volumes of both the optic nerve head and the macula region acquired with three independent orthogonal volume pairs for each location were used to assess reproducibility. The advanced motion correction algorithm using the techniques presented in this paper was compared to a basic algorithm corresponding to an earlier version and to performing no motion correction. Errors in segmentation-based measures such as layer positions, retinal and nerve fiber thickness, as well as the blood vessel pattern were evaluated. The quantitative results consistently show that reproducibility is improved considerably by using the advanced algorithm, which also significantly outperforms the basic algorithm. The mean of the mean absolute retinal thickness difference over all data was 9.9 um without motion correction, 7.1 um using the basic algorithm and 5.0 um using the advanced algorithm. Similarly, the blood vessel likelihood map error is reduced to 69% of the uncorrected error for the basic and to 47% of the uncorrected error for the advanced algorithm. These results demonstrate that

  6. A dynamic approach to communication in health literacy education

    Directory of Open Access Journals (Sweden)

    Herman Veenker

    2016-10-01

    patients by using an underlying (advanced Sender-Message-Receiver Model; and b only a few interventions in curricula are available for providing the acquisition of interaction skills in supporting autonomy. Conclusions The proposal of Huber and others to change the emphasis in the definition of the WHO definition on health towards “to adapt and self manage” has impact on the training of medical students and practioners in dealing with patients with low levels of health literacy. From the present study it can be concluded that a dynamic approach to communication can be linked to theoretical constructs on self-management. In such an approach interaction techniques like scaffolding can increase the level of HL of the patient.

  7. VOLUME ESTIMATION, DRY WEIGHT, OIL CONTENT AND QUANTITY OF FENCEPOSTS OF CANDEIA (Eremanthus erythropappus (DC MacLeish

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    José Roberto Soares Scolforo

    2004-06-01

    Full Text Available This research aimed at studying the behavior of volume, dry weight, oil content and fence post quantity per diametric class of candeia; to define its stack factor, with and without diametric class control; and to determine equations for estimating the main stem and branches volume, dry weight and oil content of the hole tree, trunk, branches and leaves and fencepost quantity. Data were obtained from a forest inventory carried out in a native candeia forest located in Aiuruoca county, Minas Gerais state - Brazil. Tree volume was calculated through the Huber formula and oil extraction methods employed were “the solvent method” and “vapor hauling method”. For estimation volume, dry weight, oil content and fencepost number the traditional double entry models were used. The oil weight in 1 cubic meter of wood of small dimensions, trees between 5 and 10cm, is around 6 kilos, while the oil content of the largest trees, between 40 and 45cm, is around 11 kilos. The same tendency is observed for the wood volume, without bark, and in the volume of piled up wood, although in these last situations the magnitude of quantities are different. The oil content of candeia trees present the following behavior: in the stem and branches up to 3cm of diameter with bark, it varies from 1,02% to 1,37%, respectively to plants with diameter between 5 and 10cm and between 40 and 45cm; in the branches with less than 3cm of diameter with bark, it varies from 0,33% to 0,65%,respectively, to plants between 5 and 10cm and between 40 and 45cm of diameter; in the leaves it varies from 0,28% to 0,77%, respectively, for plants between 5-10cm and between 40-45cm of diameter. The average stack factor is 1.9087 and diminishes as diameter classes increases. The best model for estimating oil content, dry weight, fence post quantity and volume is the logarithmic form of Schumacher-Hall model.

  8. Diagnostic significance of radiologic measurements in posterior heel pain.

    Science.gov (United States)

    Singh, R; Rohilla, R; Siwach, R C; Magu, N K; Sangwan, S S; Sharma, A

    2008-06-01

    Posterior heel pain is a common complaint in both athlete and non-athlete. For diagnosis of etiology certain angles, lines and soft tissue parameters have been developed in the literature to describe the calcaneal prominence and its relationship to Achilles tendon and its bursae. A prospective study was undertaken to evaluate the diagnostic values of these angles, lines and soft tissue parameters in posterior heel pain. Seventy-one painful heels in 58 patients (30 males and 28 females, mean+/-S.D. age; 41.4+/-10.82 years) were clinically and radiologically examined. This was compared with 50 heels in 25 control subjects. A lateral weight bearing film of the foot was taken to calculate different angles, lines and soft tissue parameters mentioned in the literature. There were 45 Pavlov's parallel pitch line positives and using test of Denis and Huber-Levernieux in only one posterior superior crest extended beyond vertical tangential. There was only one heel with Fowler & Philip angle >75 degrees. There were 10 heels with Steffensen & Evensen angle >65, 5 heels with total angle >90 degrees and 52 heels with Chauveaux-Liet angle >12 degrees. There were 73% true positive for Chauveaux-Liet angle and 63% true positive for parallel pitch line. Among soft tissue parameters ill defined retrocalcaneal recess was present in 61 symptomatic heels, plantar spur in 42 heels, posterior calcaneal step in 33 heels, Achilles tendon calcification in 29 heels, superficial tendo-Achilles bursitis in 58 heels, posterior calcaneal spur in 31 heels and antero posterior diameter of tendo-Achilles more than 9 mm in 68 symptomatic heels. Parallel pitch lines, Chauveaux-Liet angle, ill-defined retrocalcaneal recess, superficial tendo-Achilles bursa and anteroposterior diameter of Achilles tendon more than 9 mm about 2 cm above insertion are reliable objective diagnostic indicators of bony deformity of calcaneus and soft tissue affection in patients with posterior heel pain. It is the

  9. A dynamic approach to communication in health literacy education.

    Science.gov (United States)

    Veenker, Herman; Paans, Wolter

    2016-10-21

    -Message-Receiver Model; and b) only a few interventions in curricula are available for providing the acquisition of interaction skills in supporting autonomy. The proposal of Huber and others to change the emphasis in the definition of the WHO definition on health towards "to adapt and self manage" has impact on the training of medical students and practioners in dealing with patients with low levels of health literacy. From the present study it can be concluded that a dynamic approach to communication can be linked to theoretical constructs on self-management. In such an approach interaction techniques like scaffolding can increase the level of HL of the patient.

  10. A novel fermentation strategy for removing the key inhibitor acetic acid and efficiently utilizing the mixed sugars from lignocellulosic hydrolysates

    Energy Technology Data Exchange (ETDEWEB)

    Mark A. Eiteman PHD; Elliot Altman Phd

    2009-02-11

    As part of preliminary research efforts, we have completed several experiments which demonstrate 'proof of concept.' These experiments addressed the following three questions: (1) Can a synthetic mixed sugar solution of glucose and xylose be efficiently consumed using the multi-organism approach? (2) Can this approach be used to accumulate a model product? (3) Can this approach be applied to the removal of an inhibitor, acetate, selectively from mixtures of xylose and glucose? To answer the question of whether this multi-organism approach can effectively consume synthetic mixed sugar solutions, we first tested substrate-selective uptake using two strains, one unable to consume glucose and one unable to consume xylose. The xylose-selective strain ALS998 has mutations in the three genes involved in glucose uptake, rendering it unable to consume glucose: ptsG codes for the Enzyme IICB{sup Glc} of the phosphotransferase system (PTS) for carbohydrate transport (Postma et al., 1993), manZ codes for the IID{sup Man} domain of the mannose PTS permease (Huber, 1996), glk codes for glucokinase (Curtis and Epstein 1975) We also constructed strain ALS1008 which has a knockout in the xylA gene encoding for xylose isomerase, rendering ALS1008 unable to consume xylose. Two batch experiments and one continuous bioprocess were completed. In the first experiment, each strain was grown separately in a defined medium of 8 g/L xylose and 15 g/L glucose which represented xylose and glucose concentrations that can be generated by actual biomass. In the second experiment, the two strains were grown together in batch in the same defined, mixed-sugar medium. In a third experiment, we grew the strains continuously in a 'chemostat', except that we shifted the concentrations of glucose and xylose periodically to observe how the system would respond. (For example, we shifted the glucose concentration suddenly from 15 g/L to 30 g/L in the feed).

  11. Potencials of sap flow evaluation by means of acoustic emission measurements

    Directory of Open Access Journals (Sweden)

    Michal Černý

    2011-01-01

    Full Text Available The work deals with measurement techniques of water conducting system in the trees. Water conducting system (including xylem and phloem indicates its importance for related physiological processes. There are still problems how to measure its functioning (which variables and how, especially in the open field (e.g., forests and orchards in order to get maximum information about it. Simple band dendrometers measuring seasonal dynamics of stem growth have been already applied for many years, being gradually replaced by their more sophisticated electronic versions most recently. The sap flow is a suitable variable, because it links roots and crowns and provide information about transporting the largest amount of mass in plants, which can be decisive for their behavior. Following pioneering work in the last century (Huber, 1932, many types of sap flow measurement methods based on a variety of principles (e.g., thermodynamic, electric, magneto-hydrodynamic, nuclear magnetic resonance, etc. have been described. Only a few of these, particularly those based on thermodynamics, have been widely used in field-grown trees. E.g., heat pulse velocity system developed by Green (1998 and Cohen et al. (1981. Heat ratio method also works with pulses, but interpreted the data in more sophisticated way (Burgess, 2001. Widely used is a simple heat-dissipation method (Granier, 1985. Direct electric heating and internal sensing of temperature was applied in the trunk heat balance method (Čermák et al., 1973, 1976, 1982, 2004; Kučera et al., 1977; Tatarinov et al., 2005. The heat field deformation method is based on measurement of the deformation of the heat field around a needle-like linear heater (Nadezhdina et al., 1998, 2002, 2006; Čermák et al., 2004.Another important variable is water potential, which could be measured in the past only periodically on selected pieces of plant material using pressure (Scholander bomb, but most recently also continuous

  12. Task-based statistical image reconstruction for high-quality cone-beam CT

    Science.gov (United States)

    Dang, Hao; Webster Stayman, J.; Xu, Jennifer; Zbijewski, Wojciech; Sisniega, Alejandro; Mow, Michael; Wang, Xiaohui; Foos, David H.; Aygun, Nafi; Koliatsos, Vassilis E.; Siewerdsen, Jeffrey H.

    2017-11-01

    Task-based analysis of medical imaging performance underlies many ongoing efforts in the development of new imaging systems. In statistical image reconstruction, regularization is often formulated in terms to encourage smoothness and/or sharpness (e.g. a linear, quadratic, or Huber penalty) but without explicit formulation of the task. We propose an alternative regularization approach in which a spatially varying penalty is determined that maximizes task-based imaging performance at every location in a 3D image. We apply the method to model-based image reconstruction (MBIR—viz., penalized weighted least-squares, PWLS) in cone-beam CT (CBCT) of the head, focusing on the task of detecting a small, low-contrast intracranial hemorrhage (ICH), and we test the performance of the algorithm in the context of a recently developed CBCT prototype for point-of-care imaging of brain injury. Theoretical predictions of local spatial resolution and noise are computed via an optimization by which regularization (specifically, the quadratic penalty strength) is allowed to vary throughout the image to maximize local task-based detectability index ({{d}\\prime} ). Simulation studies and test-bench experiments were performed using an anthropomorphic head phantom. Three PWLS implementations were tested: conventional (constant) penalty; a certainty-based penalty derived to enforce constant point-spread function, PSF; and the task-based penalty derived to maximize local detectability at each location. Conventional (constant) regularization exhibited a fairly strong degree of spatial variation in {{d}\\prime} , and the certainty-based method achieved uniform PSF, but each exhibited a reduction in detectability compared to the task-based method, which improved detectability up to ~15%. The improvement was strongest in areas of high attenuation (skull base), where the conventional and certainty-based methods tended to over-smooth the data. The task-driven reconstruction method presents a

  13. Quantitative analysis of LISA pathfinder test-mass noise

    International Nuclear Information System (INIS)

    Ferraioli, Luigi; Congedo, Giuseppe; Hueller, Mauro; Vitale, Stefano; Hewitson, Martin; Nofrarias, Miquel; Armano, Michele

    2011-01-01

    detection, the problem of noise parameter identification in non-Gaussian data is approached in two ways. One procedure is based on the maximum-likelihood estimator and another is based on the Kolmogorov-Smirnov goodness-of-fit estimator. Both approaches provide unbiased and accurate results for noise parameter estimation and demonstrate superior performance with respect to standard weighted least squares and Huber's norm. We also discuss the advantages of the Kolmogorov-Smirnov formalism for the estimation of confidence intervals of parameter values in correlated data.

  14. Association between underweight and hospitalization, emergency room visits, and mortality among patients in community medical homes

    Directory of Open Access Journals (Sweden)

    Takahashi PY

    2013-01-01

    Full Text Available Paul Y Takahashi.1 Jennifer L St Sauver,2 Timothy C Olson,1 Jill M Huber,1 Stephen S Cha,2 Jon O Ebbert11Division of Primary Care Internal Medicine, 2Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USABackground: In older adults, underweight (body mass index [BMI] < 18.5 has been associated with increased mortality. This increased mortality risk may be associated with increased health care utilization. We evaluated the relationship between underweight and hospitalization, emergency room visits, and mortality.Methods: An analysis of a retrospective cohort study was conducted at a multisite academic primary care medical practice in Minnesota. The patients were ≥60 years of age, impaneled within primary care on January 1, 2011, and had a BMI measurement recorded between January 1, 2011, and December 31, 2011. Individuals were excluded if they refused review of their medical record. The primary measurement was BMI, which was categorized as underweight (BMI < 18.5 or normal and obese (BMI ≥ 18.5. The outcomes were hospitalization, emergency room visits, and mortality in the 2011 calendar year. Associations between underweight and each outcome were calculated using logistic regression. Interactions between underweight and gender were assessed in the logistic regression models. The final results were adjusted for age, gender, comorbid health conditions, and single living status.Results: The final cohort included 21,019 patients, of whom 220 (1% were underweight. Underweight patients had a higher likelihood of hospitalization compared with patients with higher BMI (adjusted odds ratio [OR] 1.64; 95% confidence interval [CI] 1.21–2.22. Underweight patients were also more likely to visit the emergency room (adjusted OR 1.70; 95% CI 1.28–2.25 or to die (adjusted OR 3.64; 95% CI 2.33–5.69. Men with a BMI < 18.5 compared with those having a BMI ≥ 18.5 had the highest odds of hospitalization (OR 3.45; 95% CI 1.59–7

  15. Genome-wide prediction of discrete traits using bayesian regressions and machine learning

    Directory of Open Access Journals (Sweden)

    Forni Selma

    2011-02-01

    alternatives proposed to analyze discrete traits, machine-learning showed some advantages over Bayesian regressions. Boosting with a pseudo Huber loss function showed high accuracy, whereas Random Forest produced more consistent results and an interesting predictive ability. Nonetheless, the best method may be case-dependent and a initial evaluation of different methods is recommended to deal with a particular problem.

  16. Equações alométricas para estimativa de carbono em árvores de uma área urbana em Viçosa-MG

    Directory of Open Access Journals (Sweden)

    Daniel Brianezi

    2013-12-01

    Full Text Available Objetivou-se com este estudo gerar equações para estimar o carbono presente na arborização do campus-sede da Universidade Federal de Viçosa, contribuindo para o conhecimento sobre a capacidade das áreas verdes urbanas no sequestro e estocagem de carbono. Assim, inventariaram-se todas as árvores com DAP igual ou superior a 5 cm presentes na Universidade. Para as árvores não palmeiras, selecionaram-se 721 árvores-amostra, que foram cubadas rigorosamente em pé através da aplicação sucessiva da expressão de Smalian até o diâmetro-limite de 5 cm, tanto para o fuste quanto para os galhos. No caso das palmeiras, cubaram-se 100% dos indivíduos utilizando a expressão de Huber. A densidade básica da madeira com casca e o teor de carbono foram obtidos, nas palmeiras, com a retirada de um disco na porção do DAP, dada a dificuldade de tradagem. Já nas demais árvores, utilizou-se um trado mecânico. Com base no volume, na densidade básica e no teor de carbono, calcularam-se o carbono total e o carbono dos galhos. Ademais, avaliaram-se os modelos de Schumacher e Hall (1933 e Spurr (1952, modificado para estimar o carbono fixado nesses indivíduos. Nas árvores não palmeiras do campus-sede da Universidade Federal de Viçosa, o carbono total e o carbono dos galhos podem ser estimados, em kg, em razão do Diâmetro à Altura do Peito (DAP, em cm e da Altura Total (Ht, em m, por -0,906586+1,60421*LnDAP+0,37162*LnHt e por -2,052673+1,89903*LnDAP+0,24156*LnHt, respectivamente. Nas palmeiras, o carbono total pode ser estimado por -4,46988+199082*LnDAP+1,06420*LnHt.

  17. Influence of volatile degassing on the eruptibility of large igneous province magmatic systems

    Science.gov (United States)

    Mittal, T.; Richards, M. A.

    2017-12-01

    Magmatic volatiles, in particular their buoyancy, may play a critical role in determining whether a magma reservoir can build up enough overpressure leading to drive flood basalt eruptions (Black & Manga 2017). Thus, it is important to understand the extent to which volatiles can remain trapped in a magmatic system and how they influence the eruptibility. Although the high-temperature metamorphic aureloe around a magma chamber is typically considered to have low permeability due to ductile creep, recent theoretical, experimental, and field work (e.g. Noriaki et al. 2017) have highlighted the role of dynamic permeability in magmatic systems. Consequently, the effective permeability of the crust when magma is present in the system can be orders of magnitude larger than that of exhumed rock samples. We model dynamic permeability changes as a competition between hydro-fracturing (increased porosity) and fracture closure by ductile creep and hydrothermal mineral precipitation (reduced porosity) and find yearly-to-decadal time-scales for periodic fracturing and fluid loss events and an increase in average permeability. We then use a fully coupled poro-thermo-elastic framework to model to explore the macroscopic influence of volatile loss on the stress state of the crust in this higher time-averaged permeability setting. We derive new semi-analytical solutions and combine them with a magma chamber box model (modified from Degruyter & Huber 2014) to analyze system-scale dynamics for both basaltic and silicic magmatic systems. We find that passive degassing likely has a substantial temporal influence on the stress distribution in the crust and the highly crystalline mush zone immediately surrounding a magma reservoir, and find an additional scale : pore-pressure diffusion timescale that exerts a first-order control on the magnitude and frequency of volcanic eruptions. We also explore how disconnected magma batches interact indirectly with each other and its implications for

  18. 21st Century Heat Stress Projections and their Effects on US Livestock

    Science.gov (United States)

    McCabe, E.; Buzan, J. R.; Krishnan, S.; Huber, M.

    2016-12-01

    In this study we aim to determine future yield changes in the United States for livestock caused by heat stress, under the high greenhouse gas emissions scenario, representative concentration pathway 8.5 (RCP8.5). We use CMIP5 output and the Community Earth System Model Large Ensemble (CESM LENS), produced by the National Center for Atmospheric Research (NCAR). We apply the HumanIndexMod, a diagnostic heat stress package, to calculate Temperature Humidity Index for Comfort (THIC) and wet bulb temperature (Buzan et al., 2015). THIC is used to assess an animal's behavioral changes as it is subjected to discomfort. Using output from our simulations with the HumanIndexMod, we utilized the agricultural livestock model of St. Pierre et al. (2003). THIC and wet bulb temperatures are all projected by climate models to increase by the end of the century. We found that increases in THIC and heat stress are caused by both temperature and humidity increases. We show the differences for dry matter intake loss and milk loss for the Dairy Cow Model as well as other yield related variables. These variables are estimated to decrease overall production for dairy cattle, finishing hogs, poultry and various livestock. By the end of the 21st century (2071-2100), dairy cow milk production decreases by 14%, and food intake decreases by 11% compared to the beginning of the century (2005-2034). 35% less weight is gained and 19% less food is consumed by hogs the end of the century compared to the beginning of the century. We estimate and discuss resulting yield losses for the livestock industries and the implications of these losses in the United States. These results indicate that the effect of heat stress on livestock production will be highest for dairy cows, finishing hogs, and poultry.References:Buzan, J.R., K. Oleson, and M. Huber. 2015. Implementation and comparison of a suite of heat stress metrics within the Community Land Model version 4.5. Geoscien. Model Devel. 8(2): 151-170. St

  19. BIOACTIVE COMPOUNDS DURING THE MATURATION OF FOUR FRUITS NATIVE TO THE RESTINGA FOREST OF CEARA

    Directory of Open Access Journals (Sweden)

    NIGÉRIA PEREIRA GONÇALVES

    2017-12-01

    Full Text Available ABSTRACT Fruits provide not only essential nutrients for food, but also bioactive compounds that promote health benefits and help reducing the risk of developing non-communicable chronic diseases. In this sense, this work aimed at quantifying bioactive compounds during the maturation of four fruits native to the Restinga forest of Ceara. Myrtle fruits (Eugenia punicifolia (Kunth DC. were collected at the Botanical State Park of Ceara, Caucaia-CE, and guajiru (Chrisobalanus icaco L., manipuça (Mouriri cearensis Huber and murici-pitanga fruits (Byrsonima gardneriana A. Juss. at the Botanical Garden of São Gonçalo, São Gonçalo do Amarante-CE. Fruits were collected at different stages (E and transported to the Laboratory of Plant Ecophysiology, being characterized into five or six maturation stages according to the bark color, then processed and frozen for the following physicochemical and chemical evaluations: ascorbic acid, total chlorophyll, total carotenoids, total anthocyanins and yellow flavonoids. A completely randomized design was used, with five or six treatments, depending on the maturation stages of fruits and four replicates. Murici-pitanga had higher contents of ascorbic acid (ascorbic acid 646.23 mg/100 g E5, total carotenoids (6.13 mg/100 g E5 and total anthocyanins (7.99 mg/100 g E2; and myrtle had higher contents of total chlorophyll (11.05 mg/100 g E1 and yellow flavonoid (69.11 mg/100 g E2. There are positive and significant correlations between chlorophyll and carotenoid (R= 0.99; P <0.01 for manipuça and between anthocyanin and yellow flavonoid (R= 0.97; P <0.05 for murici-pitanga fruits; however, the correlation is negative and significant between ascorbic acid and yellow flavonoids (R= -0.98; P <0.05 for myrtle fruits. It could be concluded that murici-pitanga and myrtle fruits had the highest contents of bioactive compounds with the highest levels, therefore both fruits can be recommended to be commercially exploited by

  20. Oncologic Therapy Support Via Means of a Dedicated Mobile App (OPTIMISE-1): Protocol for a Prospective Pilot Trial.

    Science.gov (United States)

    El Shafie, Rami A; Bougatf, Nina; Sprave, Tanja; Weber, Dorothea; Oetzel, Dieter; Machmer, Timo; Huber, Peter E; Debus, Jürgen; Nicolay, Nils H

    2018-03-06

    of results is planned at 24 months after trial initiation. This study will serve as a basis for future studies aiming to exploit the constant innovation in mobile medical appliances and integrate novel patient-centered concepts into patient care in the context of radiotherapy. ClinicalTrials.gov NCT03168048; https://clinicaltrials.gov/ct2/show/NCT03168048 (Archived at WebCite http://www.webcitation.org/6wtWGgi0X). ©Rami A El Shafie, Nina Bougatf, Tanja Sprave, Dorothea Weber, Dieter Oetzel, Timo Machmer, Peter E Huber, Jürgen Debus, Nils H Nicolay. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 06.03.2018.

  1. Spherulites growth in trachytic melts: a textural quantitative study from synchrotron X-ray microtomography and SEM data

    Science.gov (United States)

    Arzilli, Fabio; Mancini, Lucia; Giuli, Gabriele; Cicconi, Maria Rita; Voltolini, Marco; Carroll, Michael R.

    2013-04-01

    ) spherulites grow between 70-200 MPa, thus the nucleation process was favored at higher water contents; b) open spherulites seem to be favored at low ΔT, whereas close spherulites were favored in experiments at higher ΔT and long durations; c) estimated growth rates of spherulites were of 10-7 cm/s. References: [1] Lofgren G. (1971); Journal of Geophysical Research, 76, 5635-5648. [2] Gimeno D. (2003); Journal of Non-Crystaline Solids, 323, 84-90. [3] Watkins J., Manga M., Huber C. and Martin M. (2008); Contributions to Mineralogy and Petrology, [4] Grànàsy L., Pusztai T., Tegze G., Warren J. A. and Douglas J. F. (2005); Physical Review, 72, 011605. [5] Keith, H. D. and Padden F. J. (1963); Journal of Applied Physics, 8, 2409-2421. [6] Lofgren G. (1980); Princeton University Press, pp. 487-551.

  2. Impact of CO2 and continental configuration on Late Cretaceous ocean dynamics

    Science.gov (United States)

    Puceat, Emmanuelle; Donnadieu, Yannick; Moiroud, Mathieu; Guillocheau, François; Deconinck, Jean-François

    2014-05-01

    The Late Cretaceous period is characterized by a long-term climatic cooling (Huber et al., 1995; Pucéat et al., 2003; Friedrich et al., 2012) and by major changes in continental configuration with the widening of the Atlantic Ocean, the initiation of the Tethyan ocean closure, and the deepening of the Central Atlantic Gateway. The Late Cretaceous also marks the end of the occurrence of Oceanic Anoxic Events (OAEs), that are associated to enhanced organic carbon burial, to major crises of calcifying organisms, and to possible ocean acidification (Jenkyns, 2010). It has been suggested that the evolution in continental configuration and climate occurring during the Late Cretaceous could have induced a reorganization in the oceanic circulation, that may have impacted the oxygenation state of the oceanic basins and contributed to the disappearance of OAEs (Robinson et al., 2010; Robinson and Vance, 2012). Yet there is no consensus existing on the oceanic circulation modes and on their possible evolution during the Late Cretaceous, despite recent improvement of the spatial and temporal coverage of neodymium isotopic data (ɛNd), a proxy of oceanic circulation (MacLeod et al., 2008; Robinson et al., 2010; Murphy and Thomas, 2012; Robinson and Vance, 2012; Martin et al., 2012; Moiroud et al., 2012). Using the fully coupled ocean-atmosphere General Circulation Model FOAM, we explore in this work the impact on oceanic circulation of changes in continental configuration between the mid- and latest Cretaceous. Two paleogeography published by Sewall et al. (2007) were used, for the Cenomanian/Turonian boundary and for the Maastrichtian. For each paleogeography, 3 simulations have been realized, at 2x, 4x, and 8x the pre-industrial atmospheric CO2 level, in order to test the sensitivity of the modelled circulation to CO2. Our results show for both continental configurations a bipolar mode for the oceanic circulation displayed by FOAM. Using the Cenomanian/Turonian land-sea mask

  3. Preliminary Interpretation of a Radionuclide and Colloid Tracer Test in a Granodiorite Shear Zone at the Grimsel Test Site, Switzerland

    Energy Technology Data Exchange (ETDEWEB)

    Reimus, Paul W. [Los Alamos National Laboratory

    2012-08-30

    neptunium adsorbed appreciably to FEBEX bentonite colloids in Grimsel groundwater (Huber et al., 2011). The Grimsel groundwater has a relatively high pH of {approx}9, so the lack of uranium and neptunium adsorption to clay is not surprising given the tendency for these actinides to form very stable negative or neutrally-charged uranyl- or calcium-uranyl-carbonate complexes at these pH, particularly in a water that is effectively saturated with respect to calcite. It was also observed in testing conducted at LANL earlier in 2012 that uranium did not adsorb measurably to Grimsel granodiorite in a synthetic Grimsel groundwater at pH {approx}8.5 (Kersting et al., 2012). Thus, the planned experimental work was not pursued because all the available information clearly pointed to an expected result that uranium transport would not be facilitated by clay colloids in the Grimsel system.

  4. Sectoral Vulnerabilities to Changing Water Resources: Current and Future Tradeoffs between Supply and Demand in the Conterminous U.S

    Science.gov (United States)

    Meldrum, J.; Averyt, K.; Caldwell, P.; Sun, G.; Huber-lee, A. T.; McNulty, S.

    2012-12-01

    Assessing the sustainability of human activities depends, in part, on the availability of water supplies to meet the demands of those activities. Thermoelectric cooling, agriculture, and municipal uses all compete for water supplies, but each sector differs in its characteristic ratio of water consumption versus withdrawals. This creates different implications for contributing to water supply stress and, conversely, vulnerabilities within each sector to changing water supplies. In this study, we use two measures of water stress, relating to water withdrawals and to water consumption, and calculate the role of each of these three sectors in contributing to the two different measures. We estimate water stress with an enhanced version of the Water Supply Stress Index (WaSSI), calculating the ratio of water demand to water supply at the 8-digit Hydrologic Unit Code (HUC) scale (Sun et al. 2008, 2011; Caldwell et al. 2011). Current water supplies are based on an integrated water balance and flow routing model of the conterminous United States, which accounts for surface water supply, groundwater supply, and major return flows. Future supplies are based on simulated regional changes in streamflow in 2050 from an ensemble of 12 climate models (Milly et al. 2005). We estimate water demands separately for agriculture, municipal uses, and thermoelectric cooling, with the first two based on Kenny et al. (2005) and the last on the approach of Averyt et al. (2011). We find substantial regional variation not only in the overall WaSSI for withdrawals and consumption but also in contribution of the three water use sectors to that total. Results suggest that the relative vulnerabilities of different sectors of human activity to water supply stress vary spatially and that policies for alleviating that stress must consider the specific, regional context of the tradeoffs between competing water demands. Ref's: Averyt, K., Fisher, J., Huber-Lee, A., Lewis, A., Macknick, J., Madden, N

  5. Web-Based Urban Metabolic Mapping for Bangalore, India

    Science.gov (United States)

    Mehta, V. K.; Kemp-Benedict, E.; Wang, G.; Malghan, D.

    2012-12-01

    through which key aspects of the city's growth, water demand, and supply infrastructure can be entered. This drives a water resources model built on the Water Evaluation And Planning (www.weap21.org) software platform [3] running on a server, that returns key results to the browser. The paper concludes with plans for future development of BUMP, which include crowd-sourcing of water demand and groundwater information, in the face of a critical knowledge gap on both the demand and supply side of the water sector in Indian cities. [1] Newman, P.W.G., 1999. Sustainability and cities: extending the metabolism model. Landscape and urban planning 44, 219-226. [2] Sieferle, R.P., 2011. Cultural Evolution and Social Metabolism. Geografiska Annaler: Series B, Human Geography [3] 93, 315-324. Yates, D., Sieber, J., Purkey, D., Huber-Lee, A., 2005. WEAP21—A Demand-, Priority-, and Preference-Driven Water Planning Model. Water International 30, 487-500.

  6. Publishing datasets with eSciDoc and panMetaDocs

    Science.gov (United States)

    Ulbricht, D.; Klump, J.; Bertelmann, R.

    2012-04-01

    publishing scientific datasets as electronic data supplements to research papers. Publication of research manuscripts has an already well established workflow that shares junctures with other processes and involves several parties in the process of dataset publication. Activities of the author, the reviewer, the print publisher and the data publisher have to be coordinated into a common data publication workflow. The case of data publication at GFZ Potsdam displays some specifics, e.g. the DOIDB webservice. The DOIDB is a proxy service at GFZ for the DataCite [4] DOI registration and its metadata store. DOIDB provides a local summary of the dataset DOIs registered through GFZ as a publication agent. An additional use case for the DOIDB is its function to enrich the datacite metadata with additional custom attributes, like a geographic reference in a DIF record. These attributes are at the moment not available in the datacite metadata schema but would be valuable elements for the compilation of data catalogues in the earth sciences and for dissemination of catalogue data via OAI-PMH. [1] http://www.escidoc.org , eSciDoc, FIZ Karlruhe, Germany [2] http://panmetadocs.sf.net , panMetaDocs, GFZ Potsdam, Germany [3] http://metaworks.pangaea.de , panMetaWorks, Dr. R. Huber, MARUM, Univ. Bremen, Germany [4] http://www.datacite.org

  7. The abiotic degradation of soil organic matter to oxalic acid

    Science.gov (United States)

    Studenroth, Sabine; Huber, Stefan; Schöler, H. F.

    2010-05-01

    The abiotic degradation of soil organic matter to volatile organic compounds was studied intensely over the last years (Keppler et al., 2000; Huber et al., 2009). It was shown that soil organic matter is oxidised due to the presence of iron (III), hydrogen peroxide and chloride and thereby produces diverse alkyl halides, which are emitted into the atmosphere. The formation of polar halogenated compounds like chlorinated acetic acids which are relevant toxic environmental substances was also found in soils and sediments (Kilian et al., 2002). The investigation of the formation of other polar halogenated and non-halogenated compounds like diverse mono- and dicarboxylic acids is going to attain more and more importance. Due to its high acidity oxalic acid might have impacts on the environment e.g., nutrient leaching, plant diseases and negative influence on microbial growth. In this study, the abiotic formation of oxalic acid in soil is examined. For a better understanding of natural degradation processes mechanistic studies were conducted using the model compound catechol as representative for structural elements of the humic substances and its reaction with iron (III) and hydrogen peroxide. Iron is one of the most abundant elements on earth and hydrogen peroxide is produced by bacteria or through incomplete reduction of oxygen. To find suitable parameters for an optimal reaction and a qualitative and quantitative analysis method the following reaction parameters are varied: concentration of iron (III) and hydrogen peroxide, time dependence, pH-value and influence of chloride. Analysis of oxalic acid was performed employing an ion chromatograph equipped with a conductivity detector. The time dependent reaction shows a relatively fast formation of oxalic acid, the optimum yield is achieved after 60 minutes. Compared to the concentration of catechol an excess of hydrogen peroxide as well as a low concentration of iron (III) are required. In absence of chloride the

  8. Book Reviews

    Directory of Open Access Journals (Sweden)

    Redactie KITLV

    2002-04-01

    University Press, xiv + 299 pp. [Yale Southeast Asia studies monograph 48.] 1999 -Bernice de Jong Boers, Peter Just, Dou Donggo justice; Conflict and morality in an Indonesian society. Lanham, Maryland: Rowman and Littlefield, 2001, xi + 263 pp. -Nico J.G. Kaptein, Howard M. Federspiel, Islam and ideology in the emerging Indonesian state; The Persatuan Islam (PERSIS, 1923 to 1957. Leiden: Brill, 2001, xii + 365 pp. -Gerrit Knaap, Els M. Jacobs, Koopman in Azië; De handel van de Verenigde Oost-Indische Compagnie tijdens de 18de eeuw. Zutphen: Walburg Pers, 2000, 304 pp. -Toon van Meijl, Bruce M. Knauft, From primitive to postcolonial in Melanesia and anthropology. Ann Arbor: University of Michigan Press, 1999, x + 320 pp. -Jennifer Nourse, Juliette Koning ,Women and households in Indonesia; Cultural notions and social practices. Richmond, Surrey: Curzon, 2000, xiii + 354 pp., Marleen Nolten, Janet Rodenburg (eds -Sandra Pannell, Clayton Fredericksen ,Altered states; Material culture transformations in the Arafura region. Darwin: Northern Territory University Press, 2001, xiv + 160 pp., Ian Walters (eds -Anne Sofie Roald, Alijah Gordon, The propagation of Islam in the Indonesian-Malay archipelago. Kuala Lumpur: Malaysian sociological research institute, 2001, xxv + 472 pp. -M.J.C. Schouten, Mary Taylor Huber ,Gendered missions; Women and men in missionary discourse and practice. Ann Arbor: The University of Michigan Press, 1999, x + 252 pp., Nancy C. Lutkehaus (eds -Karel Steenbrink, Nakamura Mitsuo ,Islam and civil society in Southeast Asia. Singapore: Institute of Southeast Asian studies, 2001, 211 pp., Sharon Siddique, Omar Farouk Bajunid (eds -Heather Sutherland, Robert Cribb, Historical atlas of Indonesia, Richmond, Surrey: Curzon, 2000, x + 256 pp. -Sikko Visscher, Lee Kam Hing ,The Chinese in Malaysia. Kuala Lumpur: Oxford University Press, 2000, xxix + 418 pp., Tan Chee-Beng (eds -Edwin Wieringa, Jane Drakard, A kingdom of words; Language and power in Sumatra. Kuala

  9. VizieR Online Data Catalog: Radial velocities of systems hosting sub-Saturns (Petigura+, 2017)

    Science.gov (United States)

    Petigura, E. A.; Sinukoff, E.; Lopez, E. D.; Crossfield, I. J. M.; Howard, A. W.; Brewer, J. M.; Fulton, B. J.; Isaacson, H. T.; Ciardi, D. R.; Howell, S. B.; Everett, M. E.; Horch, E. P.; Hirsch, L. A.; Weiss, L. M.; Schlieder, J. E.

    2017-07-01

    We observed K2-27, K2-32, K2-39, and K2-108 using the High Resolution Echelle Spectrometer (HIRES) on the 10 m Keck Telescope I. K2-27 hosts a single transiting sub-Saturn, K2-27b, with P=6.77 days that was first confirmed in Van Eylen et al. (2016ApJ...820...56V) using RVs. We obtained 15 spectra of K2-27 with HIRES between 2015 February 5 and 2016 July 17. Van Eylen et al. (2016ApJ...820...56V) observed this star with HARPS, HARPS-N, and FIES. We included 6 and 19 measurements from HARPS and HARPS-N, respectively in our radial velocity analysis. K2-32 hosts three planets, K2-32b, K2-32c, and K2-32d, having orbital periods of P=8.99 days, 20.66 days, and 31.7 days, respectively, which are near the 3:2:1 period commensurability. The planets were first confirmed in Sinukoff et al. (2016ApJ...827...78S) using multiplicity arguments (Lissauer et al. 2012ApJ...750..112L). We obtained 31 spectra of K2-32 with HIRES between 2015 June 06 and 2016 August 20. Dai et al. (2016ApJ...823..115D) obtained 43 spectra with HARPS and 6 with PFS, which we included in our radial velocity analysis. K2-39 hosts a single transiting planet, K2-39b, with P=4.60 days, which was first confirmed by Van Eylen et al. (2016AJ....152..143V). We obtained 42 spectra of K2-39 with HIRES between 2015 August 10 and 2016 August 21. Van Eylen et al. (2016AJ....152..143V) obtained 7 spectra with HARPS, 6 with PFS, and 17 with FIES. K2-108, listed as EPIC-211736671 in the Ecliptic Planet Input Catalog (Huber et al. 2016, Cat. J/ApJS/224/2), is a V=12.3mag star observed during K2 Campaign 5. We identified K2-108 as a likely planet according to our team's standard methodology, described in detail in Crossfield et al. 2016 (Cat. J/ApJS/226/7). In brief, we identified a set of transits having P=4.73 days and elevated K2-108 to the status of "planet candidate". We obtained 20 spectra of K2-108 with HIRES between 2015 December 23 and 2016 November 25. (2 data files).

  10. Comparison of iterative methods and preconditioners for the solution of miscible two-phase flow in heterogeneous porous media

    Science.gov (United States)

    Büsing, Henrik

    2014-05-01

    calculation of mutual solubilities from 12 to 100 °C and up to 600 bar, Geochimica et Cosmochimica Acta, 67(16), 3015-3031. [2] Huber, R. & Helmig, R., 2000. Node-centered finite volume discretizations for the numerical simulation of multiphase flow in heterogeneous porous media, Computational Geosciences, 4, 141-164. [3] Griewank, A. & Walther, A., 2008. Evaluating Derivatives: Principles and Techniques of Algorithmic Differentiation, SIAM, Philadelphia, PA, 2nd edn. [4] Büsing, H., Willkomm, J., Bischof, C. H., & Clauser, C., 2012. Using exact Jacobians in an implicit Newton method for solving multiphase flow in porous media, International Journal for Computational Science and Engineering, (to appear). [5] Pape, H., Clauser, C., & Iffland, J., 2000. Variation of permeability with porosity in sandstone diagenesis interpreted with a fractal pore space model, Pure and Applied Geophysics, 157, 603-619.

  11. NASA/DOD Aerospace Knowledge Diffusion Research Project. Use of Communications Sources: An Intercultural Investigation of Practices in the US and Russia

    Science.gov (United States)

    Pinelli, Thomas E.; Anderson, Claire J.; Glassman, Myron

    1997-01-01

    effective innovation diffusion which, according to Fischer (1979), is essentially information exchange. And, third, studies of innovative project management have found that information availability was a critical factor in project success or failure (e.g., Link & Zmud, 1987; Tushman, 1978, 1979). We propose that a gap in the literature exists that centers on whether U.S. paradigms of commnunications behavior apply to other cultures. First, we will explore early findings in the U.S. that held that the choice of an information source was a function of the 'law of least effort' rather than quality (e.g., Allen, 1977; Cuinan, 1983; DeWhirst, 1971; Hardy, 1982; O'Reilly, 1982; Rosenberg, 1967). Second, we will explore the contingency approaches such as that of Tushman (1979) and the later work of Daft and Lengel (1984, 1987), Huber and Daft (1987) and Lengel and Daft (1988) who held that information choice was a function of the nature of the task at hand. A third issue to be addressed is the confounding problem of presumed differences between scientists and engineers in information gathering behavior (Allen, 1977). Finally, we will investigate whether cultural differences cast doubt on the applicability of findings from U.S. situations to other cultures.

  12. Salt lakes of Western Australia - Natural abiotic formation of volatile organic compounds

    Science.gov (United States)

    Krause, T.; Studenroth, S.; Mulder, I.; Tubbesing, C.; Kotte, K.; Ofner, J.; Junkermann, W.; Schöler, H. F.

    2012-04-01

    /MS. Especially the acidic lakes are sources for trihalomethanes in agreement with laboratory studies on model compounds like catechol [3]. Other compounds that are formed are chloromethane, -butane, -hexane and heptane as well as monocyclic terpenes and furan derivatives. Additionally, there are different sulphur compounds such as thiophene derivatives, carbon disulfide and dimethyl sulfide. Western Australia offers a variety of hypersaline environments with various hydrogeochemical parameters that will help to understand the abiotic formation of different volatile organic compounds. The field of research includes the complex relationships between agriculture, secondary salinisation and particle formation from volatile organic compounds emitted from the salt lakes. [1] Williams, 2001, Hydrobiologia, 466, 329-337. [2] Junkermann et al., 2009, Atmos. Chem. Phys., 9, 6531-6539. [3] Huber et al., 2009, Environ. Sci. Technol., 43 (13), 4934-4939.

  13. Salt Lakes of Western Australia - Emissions of natural volatile organic compounds

    Science.gov (United States)

    Sattler, Tobias; Krause, Torsten; Schöler, Heinfried; Kamilli, Katharina; Held, Andreas; Zetzsch, Cornelius; Ofner, Johannes; Junkermann, Wolfgang; Atlas, Elliot

    2013-04-01

    the laboratory using GC-MS technique. Different VOC and halogenated volatile compounds (VOX), exceeding atmospheric background concentrations, where identified from the sampled chamber air. Their enrichment or depletion over the time in the chamber allows for postulated reaction pathways leading to the formation of ultra-fine particles. Soil and water samples showed a variety of highly volatile and semi-volatile VOC/VOX. An abiotic formation of these VOC/VOX seems conclusive due to iron-catalysed reactions below the salt crust [2]. The salt crust is the link through which VOC/VOX pass from the soil/groundwater to the atmosphere. During desiccation salt crystals grow, trapping gases as fluid inclusions (FI). The study of FI provides qualitative emission data of VOC/VOX during desiccation which can be released upon wetting to the atmosphere. This study includes the emission of VOC/VOX from hyper saline terrestrial environments and their role in the atmospheric formation of climate relevant ultra-fine particles. [1] Junkermann et al., 2009, Atmos.Chem.Phys., 9, 6531-6539 [2] Huber et al., 2009, Environ.Sci.Technol., 43 (13), 4934-4939

  14. Superelement of a column having a rectangular cross section and characterized by physical nonlinearity СУПЕРЭЛЕМЕНТ КОЛОННЫ ПРЯМОУГОЛЬНОГО ПОПЕРЕЧНОГО СЕЧЕНИЯ С ФИЗИЧЕСКОЙ НЕЛИНЕЙНОСТЬЮ

    Directory of Open Access Journals (Sweden)

    Agapov Vladimir Pavlovich

    2013-05-01

    Full Text Available They cause mistakes in the transfer of forces in specific points and invariability of sizes and types of cross sections of rods in the course of their deformation. The approach to the analysis of rectangular section columns is proposed. The new approach originates from the three-dimensional theory supplemented by the superelement technology. The column is divided into sections and finite elements. The analysis of physically nonlinear structures is executed using the PRINS software. The flow theory is used to identify the characteristics of finite elements. Huber-Mises plasticity criterion is applied. The console beam loaded by concentrated forces on the free end is calculated to verify the element. The limiting load value identified by PRINS software complies with the theoretical values derived using the theory of limit equilibrium.Разработанный авторами на основе трехмерной теории упругости суперэлемент колонны прямоугольного сечения, предназначенный для линейных расчетов, развит применительно к расчету подобных колонн с учетом пластических деформаций. Элемент адаптирован к вычислительному комплексу ПРИНС и в составе этого комплекса может использоваться для физически нелинейного расчета строительных сооружений, содержащих колонны прямоугольного сечения.

  15. Inversion of Airborne Electromagnetic Data: Application to Oil Sands Exploration

    Science.gov (United States)

    Cristall, J.; Farquharson, C. G.; Oldenburg, D. W.

    2004-05-01

    In general, three-dimensional inversion of airborne electromagnetic data for models of the conductivity variation in the Earth is currently impractical because of the large amount of computation time that it requires. At the other extreme, one-dimensional imaging techniques based on transforming the observed data as a function of measurement time or frequency at each location to values of conductivity as a function of depth are very fast. Such techniques can provide an image that, in many circumstances, is a fair, qualitative representation of the subsurface. However, this is not the same as a model that is known to reproduce the observations to a level considered appropriate for the noise in the data. This makes it hard to assess the quality and reliability of the images produced by the transform techniques until other information such as bore-hole logs is obtained. A compromise between these two interpretation strategies is to retain the approximation of a one-dimensional variation of conductivity beneath each observation location, but to invert the corresponding data as functions of time or frequency, taking advantage of all available aspects of inversion methodology. For example, using an automatic method such as the GCV or L-curve criteria for determining how well to fit a set of data when the actual amount of noise is not known, even when there are clear multi-dimensional effects in the data; using something other than a sum-of-squares measure for the misfit, for example the Huber M-measure, which affords a robust fit to data that contain non-Gaussian noise; and using an l1-norm or similar measure of model structure that enables piecewise constant, blocky models to be constructed. These features, as well as the basic concepts of minimum-structure inversion, result in a flexible and powerful interpretation procedure that, because of the one-dimensional approximation, is sufficiently rapid to be a viable alternative to the imaging techniques presently in use

  16. X-Ray Microscopy Conference 2016 (XRM 2016)

    International Nuclear Information System (INIS)

    2017-01-01

    Kepsutlu (Helmholtz Zentrum Berlin, Germany) Simone Sala (UCL London, UK) and Ottó Márkus (KIT Karlsruhe, Germany). One highlight of the conference was the honoring of Janos Kirz and Günther Schmahl for their outstanding contributions and leadership over the years and especially for the conference series. We all remember the song composed by Chris Jacobsen that we sang together during the Wednesday special event presentation. Multiple sponsors had kindly contributed to the conference. I would like to acknowledge the following sponsors: Zeiss (conference dinner and conference AV); Silson (delegate giveaway); Bruker micro CT (literature package); Dectris Ltd (lanyards); and in alphabetic order: Applied Nanotools; Axilion; Axo Dresden/Huber Diffraction; Excillum AB; Hamamatsu Photonics; Lyncean Technologies Inc.; Norcada Inc; NTT Advanced Technology Corporation; PI miCos; Quantum Detectors; Queensgate; Rigaku; SGX Sensortech; Suna-Precision GmbH; Toyama Co. Ltd; XIA. Many of these sponsors provided exhibits during the conference offering the latest X-ray microscopy related products. Finally I would like to express my gratitude to all those who have contributed to XRM2016: the International Advisory Committee and the local Scientific Programme Committee for their support and advice, all the speakers for preparing and presenting inspiring talks and, last but by no means least, the Local Organising Committee for its enthusiastic efforts that have turned this conference into reality. I acknowledge my co-chairs, Liz Duke and Burkhard Kaulich, and our former Physical Sciences Director, Trevor Rayment, for the numerous and helpful discussions regarding the content and details of the conference. My special thanks go to Emma Clarke for her relentless work and effort. The support of the Diamond helpers and the communications team are also acknowledged. It has been a great honour to host the XRM2016 conference and we hope that all the participants have found the conference to be

  17. Multi-facetted Metadata - Describing datasets with different metadata schemas at the same time

    Science.gov (United States)

    Ulbricht, Damian; Klump, Jens; Bertelmann, Roland

    2013-04-01

    REST-interface to store versioned dataset files and metadata in a XML-format. The software is able to administrate more than one eSciDoc metadata record per item and thus allows the description of a dataset according to its context. The metadata fields can be filled with static or dynamic content to reduce the number of fields that require manual entries to a minimum and, at the same time, make use of contextual information available in a project setting. Access rights can be adjusted to set visibility of datasets to the required degree of openness. Metadata from separate instances of panMetaDocs can be syndicated to portals through RSS and OAI-PMH interfaces. The application architecture presented here allows storing file-based datasets and describe these datasets with any number of metadata schemas, depending on the intended use case. Data and metadata are stored in the same entity (eSciDoc items) and are managed by a software tool through the eSciDoc REST interface - in this case the application is panMetaDocs. Other software may re-use the produced items and modify the appropriate metadata records by accessing the web API of the eSciDoc data infrastructure. For presentation of the datasets in a web browser we are not bound to panMetaDocs. This is done by stylesheet transformation of the eSciDoc-item. [1] http://www.datacite.org [2] http://www.escidoc.org , eSciDoc, FIZ Karlruhe, Germany [3] http://panmetadocs.sf.net , panMetaDocs, GFZ Potsdam, Germany [4] http://metaworks.pangaea.de , panMetaWorks, Dr. R. Huber, MARUM, Univ. Bremen, Germany

  18. Properties of xanthine dehydrogenase variants from rosy mutant strains of Drosophila melanogaster and their relevance to the enzyme's structure and mechanism.

    Science.gov (United States)

    Doyle, W A; Burke, J F; Chovnick, A; Dutton, F L; Whittle, J R; Bray, R C

    1996-08-01

    activity to NADH with dyes as oxidising substrate. Mild oxidation of the enzyme converts it, apparently irreversibly, to a form showing full activity to xanthine and pterin. The nature of the group that is oxidised is discussed in the light of redox potential data. It is proposed that the process involves oxidation of the pterin of the molybdenum cofactor from the tetrahydro to a dihydro oxidation state. This conclusion is fully consistent with recent information [Romäo, M. J., Archer, M., Moura, I., Moura. J.J.G., LeGall, J., Engh, R., Schneider, M., Hof, P. & Huber, R. (1995) Science 270. 1170-1176) from X-ray crystallography on the structure of a closely related enzyme from Desulfovibrio gigas. It is proposed, that apparent irreversibility of the oxidative activating process for [G1011E]xanthine dehydrogenase, is due to conversion of its pterin to the tricyclic derivative detected by these workers. The data thus provide the strongest evidence available, that the oxidation state of the pterin can have a controlling influence on the activity of a molybdenum cofactor enzyme. Implications regarding pterin incorporation into xanthine dehydrogenase and in relation to other molybdenum enzymes are discussed.

  19. Acuity and case management: a healthy dose of outcomes, part III.

    Science.gov (United States)

    Huber, Diane L; Craig, Kathy

    2007-01-01

    This is the third of a 3-part series presenting 2 effective applications--acuity and dosage--that describe how the business case for case management (CM) can be made. In Part I, dosage and acuity concepts were explained as client need-severity, CM intervention-intensity, and CM activity-dose prescribed by amount, frequency, duration, and breadth of activities. Concepts were presented that related the practice of CM to the use of evidence-based practice (EBP), knowledge, and methods and the development of instruments that measure and score pivotal CM actions. Part I also featured a specific exemplar, the CM Acuity Tool, and described how to use acuity to identify and score the complexity of a CM case. Part II further explained dosage and 2 acuity instruments, the Acuity Tool and AccuDiff. Part III presents linkage to EBP and practical applications. The information contained in the 3-part series applies to all CM practice settings and contains ideas and recommendations useful to CM generalists, specialists, supervisors, and business and outcomes managers. The Acuity Tools Project was developed from frontline CM practice in one large, national telephonic CM company. Dosage: A literature search failed to find research into dosage of a behavioral intervention. The Huber-Hall model was developed and tested in a longitudinal study of CM models in substance abuse treatment and reported in the literature. Acuity: A structured literature search and needs assessment launched the development of the suite of acuity tools. A gap analysis identified that an instrument to assign and measure case acuity specific to CM activities was needed. Clinical experts, quality specialists, and business analysts (n = 7) monitored the development and testing of the tools, acuity concepts, scores, differentials, and their operating principles and evaluated the validity of the acuity tools' content related to CM activities. During the pilot phase of development, interrater reliability testing of

  20. Acuity and case management: a healthy dose of outcomes, part II.

    Science.gov (United States)

    Craig, Kathy; Huber, Diane L

    2007-01-01

    This is the second of a 3-part series presenting 2 effective applications-acuity and dosage-that describe how the business case for case management (CM) can be made. In Part I, dosage and acuity concepts were explained as client need-severity, CM intervention-intensity, and CM activity-dose prescribed by amount, frequency, duration, and breadth of activities. Part I also featured a specific exemplar, the CM Acuity Tool, and described how to use acuity to identify and score the complexity of a CM case. Appropriate dosage prescription of CM activity was discussed. Part II further explains dosage and presents two acuity instruments, the Acuity Tool and AccuDiff. Details are provided that show how these applications produce opportunities for better communication about CM cases and for more accurate measurement of the right content that genuinely reflects the essentials of CM practice. The information contained in the 3-part series applies to all CM practice settings and contains ideas and recommendations useful to CM generalists, specialists, and supervisors, plus business and outcomes managers. The Acuity Tools Project was developed from frontline CM practice in one large, national telephonic CM company. Dosage: A literature search failed to find research into dosage of a behavioral intervention. The Huber-Hall model was developed and tested in a longitudinal study of CM models in substance abuse treatment and reported in the literature. Acuity: A structured literature search and needs assessment launched the development of the suite of acuity tools. A gap analysis identified that an instrument to assign and measure case acuity specific to CM activities was needed. Clinical experts, quality specialists, and business analysts (n = 7) monitored the development and testing of the tools, acuity concepts, scores, differentials, and their operating principles and evaluated the validity of the Acuity Tools' content related to CM activities. During the pilot phase of

  1. Analyses and Measures of GPR Signal with Superimposed Noise

    Science.gov (United States)

    Chicarella, Simone; Ferrara, Vincenzo; D'Atanasio, Paolo; Frezza, Fabrizio; Pajewski, Lara; Pavoncello, Settimio; Prontera, Santo; Tedeschi, Nicola; Zambotti, Alessandro

    2014-05-01

    The influence of EM noises and environmental hard conditions on the GPR surveys has been examined analytically [1]. In the case of pulse radar GPR, many unwanted signals as stationary clutter, non-stationary clutter, random noise, and time jitter, influence the measurement signal. When GPR is motionless, stationary clutter is the most dominant signal component due to the reflections of static objects different from the investigated target, and to the direct antenna coupling. Moving objects like e.g. persons and vehicles, and the swaying of tree crown, produce non-stationary clutter. Device internal noise and narrowband jamming are e.g. two potential sources of random noises. Finally, trigger instabilities generate random jitter. In order to estimate the effective influence of these noise signal components, we organized some experimental setup of measurement. At first, we evaluated for the case of a GPR basic detection, simpler image processing of radargram. In the future, we foresee experimental measurements for detection of the Doppler frequency changes induced by movements of targets (like physiological movements of survivors under debris). We obtain image processing of radargram by using of GSSI SIR® 2000 GPR system together with the UWB UHF GPR-antenna (SUB-ECHO HBD 300, a model manufactured by Radarteam company). Our work includes both characterization of GPR signal without (or almost without) a superimposed noise, and the effect of jamming originated from the coexistence of a different radio signal. For characterizing GPR signal, we organized a measurement setup that includes the following instruments: mod. FSP 30 spectrum analyser by Rohde & Schwarz which operates in the frequency range 9 KHz - 30 GHz, mod. Sucoflex 104 cable by Huber Suhner (10 MHz - 18 GHz), and HL050 antenna by Rohde & Schwarz (bandwidth: from 850 MHz to 26.5 GHz). The next analysis of superimposed jamming will examine two different signal sources: by a cellular phone and by a

  2. Long-term landscape evolution of the Basal Complexes of Fuerteventura and La Gomera Islands, Canary Archipelago

    Science.gov (United States)

    Mansour, Sherif; Glasmacher, Ulrich A.; Albinger, Marie; Stoeckli, Daniel F.

    2014-05-01

    . Volcanic complexes in the eastern ridge of the Canary Islands: the Miocene activity of the Island of Fuerteventura. Journal of Volcanology and Geothermal Research 70, 183-204. Ancochea, E., Hernán, F., Huertas, M.J., Brändle, J.L., Herrera, R., 2006. A new chronostratigraphical and evolutionary model for La Gomera: implications for the overall evolution of the Canarian Archipelago. Journal of Volcanology and Geothermal Research 157, 271-293. Herold, N., Huber, M., Greenwood, D.R., Müller, R.D., Seton, M., 2011. Early to Middle Miocene monsoon climate in Australia. Geology 39, 3-6. McGuire, W.J., 1996. Volcano instability: a review of contemporary themes. In: McGuire, W.J., Jones, A.P., Neuberg, J. (Eds.), Volcano Instability on the Earth and Terrestrial Planets. Geological Society of London, Special Publication 110, 1-23. Stillman, C.J., 1999. Giant Miocene landslides and the evolution of Fuerteventura, Canary Islands. Journal of Volcanology and Geothermal Research 94, 89-104.

  3. Metronomic treatment of advanced non-small-cell lung cancer with daily oral vinorelbine – a Phase I trial

    Directory of Open Access Journals (Sweden)

    Guetz S

    2017-02-01

    Full Text Available Sylvia Guetz,1,* Amanda Tufman,2,* Joachim von Pawel,3 Achim Rittmeyer,4 Astrid Borgmeier,2 Pierre Ferré,5 Birgit Edlich,6 Rudolf Maria Huber2 1Ev. Diakonissenkrankenhaus Leipzig, Leipzig, 2University Hospital Munich and Thoracic Oncology Centre Munich, Member of the German Center for Lung Research, Comprehensive Pneumology Center Munich (DZL CPC-M, Munich, 3Asklepios Fachkliniken Muenchen-Gauting, Gauting, 4Lungenfachklinik Immenhausen, Immenhausen, Germany; 5Pierre Fabre Pharmaceuticals, Oncology Research and Development Center, Toulouse, France; 6Pierre Fabre Pharma GmbH, Freiburg, Germany *These authors contributed equally to this work Micro-abstract: In a Phase I dose-finding study of metronomic daily oral vinorelbine in advanced non-small-cell lung cancer, a recommended dose was established for this therapeutic approach. In addition, this trial revealed promising efficacy data and an acceptable tolerability profile. The observed vinorelbine blood concentrations suggest continuous anti-angiogenic coverage. Introduction: We present a Phase I dose-finding study investigating metronomic daily oral vinorelbine (Navelbine® Oral, NVBo in advanced non-small-cell lung cancer (NSCLC. Patients and methods: Patients with stage III/IV NSCLC received daily NVBo at fixed dose levels of 20–50 mg/d for 21 days of each 4-week cycle. Primary end point was the maximum tolerated dose. Secondary end points included tumor response, time to progression (TTP, overall survival (OS and tolerability. Results: Twenty-seven patients with advanced NSCLC were enrolled. Most of them were extensively pretreated. Daily NVBo was well tolerated up to 30 mg/d. At 40 mg/d, two of five patients experienced dose-limiting toxicities (DLTs. Three of six patients had DLTs at the 50 mg/d level. The recommended dose was established at 30 mg/d in cycle 1, with escalation to 40 mg/d in cycle 2, if tolerated. Pharmacokinetic analyses showed continuous blood exposure over 21

  4. Acuity and case management: a healthy dose of outcomes, part I.

    Science.gov (United States)

    Huber, Diane L; Craig, Kathy

    2007-01-01

    This article presents acuity and dosage as two concepts that describe how the business case for case management (CM) can be made. Dosage and acuity concepts are explained as client need-severity, CM intervention-intensity, and CM activity-dose by amount, duration, extent, and timing. Concepts are related to the practice of CM using evidence-based knowledge and methods to develop instruments that measure and score pivotal CM actions. The purpose of this series of three articles is to introduce the two concepts of dosage and acuity, discuss their importance for making the business case for CM and for translation into evidence-based practice, and present a powerful example of how they can be used in everyday CM. The articles feature a specific exemplar, the CM Acuity Tools project, and explain how the melding of the acuity and dosage innovations will improve the capture of CM outcomes. Part I focuses on the CM Acuity Tool(c) instrument. The article's information applies to all CM practice settings, and contains ideas and recommendations useful to CM generalists, specialists, supervisors, and outcomes managers. The Acuity Tools Project was developed from frontline CM practice in one large, national telephonic CM company. For dosage, the Huber-Hall Dosage Model and its testing are described and explained. The intersection of dosage and acuity is analyzed. For the Acuity Tools Project, a structured literature search and needs assessment launched the development of the suite of acuity tools. The resulting gap analysis identified that an instrument to assign and measure case acuity specific to CM activities was needed. Clinical experts, quality specialists, and business analysts (n = 7) monitored the development and testing of the tools, acuity concepts, scores, differentials, and their operating principles, and evaluated the validity of the acuity tools' content related to CM activities. During the pilot phase of development, interrater reliability testing of draft and

  5. PREFACE: Nano- and microfluidics Nano- and microfluidics

    Science.gov (United States)

    Jacobs, Karin

    2011-05-01

    The field of nano- and microfluidics emerged at the end of the 1990s parallel to the demand for smaller and smaller containers and channels for chemical, biochemical and medical applications such as blood and DNS analysis [1], gene sequencing or proteomics [2, 3]. Since then, new journals and conferences have been launched and meanwhile, about two decades later, a variety of microfluidic applications are on the market. Briefly, 'the small flow becomes mainstream' [4]. Nevertheless, research in nano- and microfluidics is more than downsizing the spatial dimensions. For liquids on the nanoscale, surface and interface phenomena grow in importance and may even dominate the behavior in some systems. The studies collected in this special issue all concentrate on these type of systems and were part ot the priority programme SPP1164 'Nano- and Microfluidics' of the German Science Foundation (Deutsche Forschungsgemeinschaft, DFG). The priority programme was initiated in 2002 by Hendrik Kuhlmann and myself and was launched in 2004. Friction between a moving liquid and a solid wall may, for instance, play an important role so that the usual assumption of a no-slip boundary condition is no longer valid. Likewise, the dynamic deformations of soft objects like polymers, vesicles or capsules in flow arise from the subtle interplay between the (visco-)elasticity of the object and the viscous stresses in the surrounding fluid and, potentially, the presence of structures confining the flow like channels. Consequently, new theories were developed ( see articles in this issue by Münch and Wagner, Falk and Mecke, Bonthuis et al, Finken et al, Almenar and Rauscher, Straube) and experiments were set up to unambiguously demonstrate deviations from bulk, or 'macro', behavior (see articles in this issue by Wolff et al, Vinogradova and Belyaev, Hahn et al, Seemann et al, Grüner and Huber, Müller-Buschbaum et al, Gutsche et al, Braunmüller et al, Laube et al, Brücker, Nottebrock et al

  6. Ontology-Based Vaccine Adverse Event Representation and Analysis.

    Science.gov (United States)

    Xie, Jiangan; He, Yongqun

    2017-01-01

    ), have been developed with a specific aim to standardize AE categorization. However, these controlled terminologies have many drawbacks, such as lack of textual definitions, poorly defined hierarchies, and lack of semantic axioms that provide logical relations among terms. A biomedical ontology is a set of consensus-based and computer and human interpretable terms and relations that represent entities in a specific biomedical domain and how they relate each other. To represent and analyze vaccine adverse events (VAEs), our research group has initiated and led the development of a community-based ontology: the Ontology of Adverse Events (OAE) (He et al., J Biomed Semant 5:29, 2014). The OAE has been found to have advantages to overcome the drawbacks of those controlled terminologies (He et al., Curr Pharmacol Rep :1-16. doi:10.1007/s40495-016-0055-0, 2014). By expanding the OAE and the community-based Vaccine Ontology (VO) (He et al., VO: vaccine ontology. In The 1st International Conference on Biomedical Ontology (ICBO-2009). Nature Precedings, Buffalo. http://precedings.nature.com/documents/3552/version/1 ; J Biomed Semant 2(Suppl 2):S8; J Biomed Semant 3(1):17, 2009; Ozgur et al., J Biomed Semant 2(2):S8, 2011; Lin Y, He Y, J Biomed Semant 3(1):17, 2012), we have also developed the Ontology of Vaccine Adverse Events (OVAE) to represent known VAEs associated with licensed vaccines (Marcos E, Zhao B, He Y, J Biomed Semant 4:40, 2013).In this book chapter, we will first introduce the basic information of VAEs, VAE safety surveillance systems, and how to specifically query and analyze VAEs using the US VAE database VAERS (Chen et al., Vaccine 12(10):960-960, 1994). In the second half of the chapter, we will introduce the development and applications of the OAE and OVAE. Throughout this chapter, we will use the influenza vaccine Flublok as the vaccine example to launch the corresponding elaboration (Huber VC, McCullers JA, Curr Opin Mol Ther 10(1):75-85, 2008). Flublok is a

  7. Book Reviews

    Directory of Open Access Journals (Sweden)

    Redactie KITLV

    1996-01-01

    Full Text Available -Sandra L. Richards, Judy S.J. Stone, Theatre. London: Macmillan Caribbean, 1994. xii + 268 pp. -Lowell Fiet, Errol Hill, The Jamaican stage, 1655-1900: profile of a colonial theatre. Amherst: University of Massachusetts Press, 1992. xiv + 346 pp. -Supriya Nair, Bruce King, V.S. Naipaul. New York: St. Martin's Press, 1993. viii + 170 pp. -Agnes Lugo-Ortiz, Donald E. Rice, The rhetorical uses of the authorizing figure: Fidel Castro and José Martí. Westport CT: Praeger, 1992. xviii + 163 pp. -Graciella Cruz-Taura, Juan A. Martínez, Cuban art and national identity: The Vanguardia painters, 1927-1950. Gainesville: University Press of Florida, 1994. xiv + 189 pp. -Graciella Cruz-Taura, Luis Camnitzer, New art of Cuba. Austin; University of Texas Press, 1994. xxx + 400 pp. -Gary Brana-Shute, Richard Price ,On the mall: Presenting Maroon tradition-bearers at the 1992 festival of American folklife. Bloomington: Folklore Institute, Indiana University, 1994. xi + 123 pp., Sally Price (eds -Erika Bourguignon, Stephan Palmié, Das Exil der Götter: Geschichte und Vorstellungswelt einer afrokubanischen Religion. Frankfurt: Peter Lang, 1991. vii + 520 pp. -Carla Freeman, Daniel Miller, Modernity, an ethnographic approach: Dualism and mass consumption in Trinidad. Oxford: Berg Publishers, 1994. 340 pp. -Daniel A. Segal, Kelvin Singh, Race and class: Struggles in a colonial state: Trinidad 1917-1945. Kingston; The Press - University of the West Indies, 1994. xxii + 284 pp. -Evelyne Huber, Patsy Lewis, Jamaica: Preparing for the twenty-first century. Kingston: Ian Randle, 1994. xvi + 272 pp. -Diane Vernon, Elisa Janine Sobo, One blood: The Jamaican body. Albany NY: State University of New York Press, 1993. vii + 329 pp. -Robert Myers, Patrick L. Baker, Centring the periphery: Chaos. order and the ethnohistory of Dominica. Kingston: The Press - University of the West Indies, 1994. xxviii + 251 pp. -Riva Berleant-Schiller, Debra Evenson, Revolution in the

  8. Satellite altimetry and hydrologic modeling of poorly-gauged tropical watershed

    Science.gov (United States)

    Sulistioadi, Yohanes Budi

    Fresh water resources are critical for daily human consumption. Therefore, a continuous monitoring effort over their quantity and quality is instrumental. One important model for water quantity monitoring is the rainfall-runoff model, which represents the response of a watershed to the variability of precipitation, thus estimating the discharge of a channel (Bedient and Huber, 2002, Beven, 2012). Remote sensing and satellite geodetic observations are capable to provide critical hydrological parameters, which can be used to support hydrologic modeling. For the case of satellite radar altimetry, limited temporal resolutions (e.g., satellite revisit period) prohibit the use of this method for a short (less than weekly) interval monitoring of water level or discharge. On the other hand, the current satellite radar altimeter footprints limit the water level measurement for rivers wider than 1 km (Birkett, 1998, Birkett et al., 2002). Some studies indeed reported successful retrieval of water level for small-size rivers as narrow as 80 m (Kuo and Kao, 2011, Michailovsky et al., 2012); however, the processing of current satellite altimetry signals for small water bodies to retrieve accurate water levels, remains challenging. To address this scientific challenge, this study poses two main objectives: (1) to monitor small (40--200 m width) and medium-sized (200--800 m width) rivers and lakes using satellite altimetry through identification and choice of the over-water radar waveforms corresponding to the appropriately waveform-retracked water level; and (2) to develop a rainfall-runoff hydrological model to represent the response of mesoscale watershed to the variability of precipitation. Both studies address the humid tropics of Southeast Asia, specifically in Indonesia, where similar studies do not yet exist. This study uses the Level 2 radar altimeter measurements generated by European Space Agency's (ESA's) Envisat (Environmental Satellite) mission. The first study

  9. Capacidade de Absorção do Conhecimento e a Comunicação com o Ambiente Externo: Uma Análise em Empresas de Palmas/TO

    Directory of Open Access Journals (Sweden)

    Suzana Gilioli Nunes

    2015-09-01

    objetivo de esta investigación fue evaluar la capacidad de absorción de conocimiento organizacional, teniendo como una de sus dimensiones de comunicación con el ambiente externo. Un estudio cuantitativo con un centenar de empresas pertenecientes a los sectores de comercio y servicios se ha desarrollado, que se encuentra en la ciudad de Palmas, TO. El cuestionario implicó el uso de una gama de capacidad de absorción del conocimiento desarrollado por Matusik y Heeley (2005. Los autores estiman que la capacidad de absorción se compone de múltiples dimensiones: 1 la relación de la empresa con su entorno externo, 2 la estructura, las rutinas de conocimiento, y el grupo principal de la creación de valor y, 3 la absorción de las capacidades individuales . Los resultados mostraron que las empresas encuestadas tenían un alto grado de relación de dominación con el medio ambiente. Palabras clave: Capacidad de absorción de conocimiento; el conocimiento; la comunicación con el ambiente externo.   REFERÊNCIAS COHEN,W. M., LEVINTHAL, D. A. Absorptive capacity: A new perspective on learning and innovation. Administrative Science Quarterly, v. 35: 128-152, 1990. CRADWELL, D. The Norton history of technology. London: Norton.1995. FELDMAN, M. S.; PENTLAND, B., T. Reconceptualizing organizational routines as a source of flexibility and change. Administrative Science quarterly, v. 48, n. 1, 94-118, 2003. FLATTEN, T.; BRETTEL, M.; ENGELEN, A.; GREVE G. A measure of absorptive capacity: Development and validation. Academy of Management Proceedings Volume: 2009, Publisher: Academy of Management, Pages: 1-7, 2009. GOES, J. B.; PARK, S. H. Interorganizational links and innovation: The case of hospital services. Academy of Management Journal, v. 40: 673-697, 1997. GREVE, H.R. Exploration and exploitation in product innovation. Industrial and Corporate Change, 1-31, may, 2007. HUBER, G. P. Organizational learning: The contributing processes and the literatures. Organization Science

  10. Extra-anatomic transplantations in autologous adult cell therapies aiding anatomical regeneration and physiological recovery – An insight and categorization

    Directory of Open Access Journals (Sweden)

    Editorial

    2015-12-01

    analysis of the functional uniqueness of the source vs target across these criteria of germ layers, organs, tissues and sites have to be thoroughly studied. Until pluripotent stem cell-derived clinical applications come into regular practice, such extra-anatomic adult cell therapies either IECT or TECT are worth studying as novel solutions to tissue regeneration. These are likely to evolve in the coming years and existing solutions could be enhanced using the principles behind IECT or TECT for diseases that do not have a definitive treatment. References Knutsen G, Drogset JO, Engebretsen L, Grøntvedt T, Isaksen V, Ludvigsen TC, Roberts S, Solheim E, Strand T, Johansen O. A randomized trial comparing autologous chondrocyte implantation with microfracture. Findings at five years. J Bone Joint Surg Am. 2007;89(10:2105-12. Tsai RJ, Li LM, Chen JK. Reconstruction of damaged corneas by transplantation of autologous limbal epithelial cells. N Engl J Med. 2000;343(2:86-93. Siltanen A, Nuutila K, Imanishi Y, Uenaka H, Mäkelä J, Pätilä T, Vento A, Miyagawa S, Sawa Y, Harjula A, Kankuri E. The paracrine effect of skeletal myoblasts is cardioprotective against oxidative stress and involves EGFR-ErbB4 signaling, cystathionase, and the unfolded protein response. Cell Transplant.2015. [Epub ahead of print] Burman S, Sangwan V. Cultivated limbal stem cell transplantation for ocular surface reconstruction. Clin Ophthalmol. 2008;2(3:489-502. Tabakow P, Jarmundowicz W, Czapiga B, Fortuna W, Miedzybrodzki R, Czyz M, Huber J, Szarek D, Okurowski S, Szewczyk P, Gorski A, Raisman G. Transplantation of autologous olfactory ensheathing cells in complete human spinal cord injury.Cell Transplant. 2013;22(9:1591-612. Vaddi S, Godala C, Reddy V, Senthilkumar R, Srinivasan T, Reena H, Preethy S, Abraham S. Role of tissue engineered buccal mucosa for treatment of urethral stricture. Proceedings of the Annual Symposium & Plenary Session on Regenerative Medicine (PASRM. J Stem Cells Regen Med. 2013

  11. Selected Abstracts of the 1st Congress of joint European Neonatal Societies (jENS 2015; Budapest (Hungary; September 16-20, 2015; Session “Brain & Development”

    Directory of Open Access Journals (Sweden)

    Various Authors

    2015-09-01

    NICU GRADUATES? • J. Kuiper, W. van Huffelen, R. BenardABS 38. SHOULD WE CORRECT FOR GESTATIONAL AGE WHEN ASSESSING DEVELOPMENT IN PRETERM-BORN CHILDREN? • N.H. van Dokkum, J.M. Kerstjens, D.M. van Maanen, A.F. de Winter, A.F. Bos, S.A. ReijneveldABS 39. NEUROCOGNITIVE DISABILITIES IN CHILDREN WITH MINOR NEUROLOGICAL DYSFUNCTION BORN VERY PRETERM • T. Kurpershoek, E. Potharst-Sirag, C. Aarnoudse-Moens, A. van Wassenaer-LeemhuisABS 40. 2 YEAR NEURODEVELOPMENTAL OUTCOMES FOLLOWING EXTREME PREMATURITY OR EXTREMELY LOW BIRTH WEIGHT IN NOTTINGHAM, UNITED KINGDOM. BIRTH COHORT 2000-2008 • C. Forster, T. Crosby, J. DorlingABS 41. MONOCHORIONIC DIAMNIOTIC TWINS: A 2-YEAR DEVELOPMENTAL OUTCOME • E. Teixeira, M. Machado, L.M. Ferreira, F. Rodrigues, R. Henriques, E. AfonsoABS 42. EPILEPSY IN CHILDREN BORN MODERATELY AND LATE PRETERM • M. Hirvonen, R. Ojala, P. Korhonen, P. Haataja, K. Eriksson, M. Gissler, T. Luukkaala, O. TammelaABS 43. SPATIAL LEARNING AND MEMORY IN PRETERM PIGS • A.D. Andersen, L. Langhorn, P.T. Sangild, T. ThymannABS 44. IS DELAYED NORMALISATION OF PLASMA LACTATE IN COOLED BABIES WITH HYPOXIC-ISCHAEMIC ENCEPHALOPATHY ASSOCIATED WITH A POOR OUTCOME? • N. Ide Bergamaschi, P. ClarkeABS 45. HEAD GROWTH AND NEURODEVELOPMENTAL OUTCOME AT 1 YEAR FOLLOWING FETAL GROWTH RESTRICTION • M. Boyle, R. Pinnamaneni, J. Unterscheider, F. Malone, N. McCallion, A. ForanABS 46. EEG SLEEP SLOW WAVE ACTIVITY AS A POTENTIAL MARKER OF LOAD-DEPENDENT DEFICITS IN EXECUTIVE FUNCTIONS IN VERY PRETERM CHILDREN AND ADOLESCENTS • F. Wehrle, B. Latal, R. O’Gorman, C. Hagmann, R. HuberABS 47. EFFECT OF SHORTER DELAY TIME AFTER SUCROSE ADMINISTRATION TO REDUCE HEEL STICK RELATED PAIN IN NEWBORN INFANTS • N.J. Meesters, M. van Dijk, S.H.P. SimonsABS 48. IS MANAGING PAIN A PAIN? NATIONAL SURVEY ON NEONATAL PAIN MANAGEMENT IN THE UNITED KINGDOM • S. Bhayat, H. GowdaABS 49. INSULIN-LIKE GROWTH FACTOR-1 PROTEIN CONCENTRATION INCREASES PERINATALLY AND REMAINS HIGH

  12. EDITORIAL: Focus on Molecular Electronics FOCUS ON MOLECULAR ELECTRONICS

    Science.gov (United States)

    Scheer, Elke; Reineker, Peter

    2008-06-01

    : American Scientific Publishers) [7] Petty M C 2007 Molecular Electronics, (Weinheim: Wiley-VCH) [8] 2006 Molecular Wires and Nanoscale Conductors Faraday Discuss. 131 1-420 Focus on Molecular Electronics Contents Model of mixed Frenkel and charge-transfer excitons in donor-acceptor molecular crystals: investigation of vibronic spectra I J Lalov, C Warns and P Reineker Suppressing the current through molecular wires: comparison of two mechanisms GuangQi Li, Michael Schreiber and Ulrich Kleinekathöfer Charge-memory effect in a polaron model: equation-of-motion method for Green functions Pino D'Amico, Dmitry A Ryndyk, Gianaurelio Cuniberti and Klaus Richter Determination of transport levels of organic semiconductors by UPS and IPS S Krause, M B Casu, A Schöll and E Umbach Electrical characterization of alkane monolayers using micro-transfer printing: tunneling and molecular transport C Kreuter, S Bächle, E Scheer and A Erbe Correlated charge transfer along molecular chains L Mühlbacher and J Ankerhold Non-equilibrium Green's functions in density functional tight binding: method and applications A Pecchia, G Penazzi, L Salvucci and A Di Carlo Asymmetric Coulomb blockade and Kondo temperature of single-molecule transistors Florian Elste and Felix von Oppen Electron-phonon scattering in molecular electronics: from inelastic electron tunnelling spectroscopy to heating effects Alessio Gagliardi, Giuseppe Romano, Alessandro Pecchia, Aldo Di Carlo, Thomas Frauenheim and Thomas A Niehaus Interlinking Au nanoparticles in 2D arrays via conjugated dithiolated molecules Jianhui Liao, Markus A Mangold, Sergio Grunder, Marcel Mayor, Christian Schönenberger and Michel Calame Conductance values of alkanedithiol molecular junctions M Teresa González, Jan Brunner, Roman Huber, Songmei Wu, Christian Schönenberger and Michel Calame Particularities of surface plasmon-exciton strong coupling with large Rabi splitting C Symonds, C Bonnand, J C Plenet, A Bréhier, R Parashkov, J S Lauret, E

  13. 6th International Symposium on Molecular Allergology (ISMA

    Directory of Open Access Journals (Sweden)

    Christiane Hilger

    2016-10-01

    hypoallergenic variant of the major peanut allergen Ara h 2 for allergen-specific immunotherapy Angelika Tscheppe, Dieter Palmberger, Merima Bublin, Christian Radauer, Chiara Palladino, Barbara Gepp, Nina Lengger, Reingard Grabherr, Heimo Breiteneder P36 Mutagenesis of amino acids critical for calcium-binding leads to the generation of a hypoallergenic Phl p 7 variant Marianne Raith, Linda Sonnleitner, Doris Zach, Konrad Woroszylo, Margit Focke-Tejkl, Herbert Wank, Thorsten Graf, Annette Kuehn, Ines Swoboda P37 Are birch pollen allergen immunotherapy induced blocking antibodies protective for cross-reactive allergens? Claudia Asam, Sara Huber, Heidi Hofer, Roland Lang, Thomas Hawranek, Fátima Ferreira, Michael Wallner P38 High success of 58 subcutaneous immunotherapy for pets allergy in a polyallergic cohort of patients: a component resolved individually adapted treatment (CRIAT Fabienne Gay-Crosier P39 Neutrophils are potential antigen presenting cells in IgE- mediated allergy Dominika Polak, Birgit Nagl, Claudia Kitzmüller, Barbara Bohle P40 Characterization of allergen-specific CD8+ T cells in type I allergy Nazanin Samadi, Claudia Kitzmüller, Rene Geyeregger, Barbara Bohle, Beatrice Jahn-Schmid Poster Session 5: Molecular and cellular diagnostic tests P41 Nanofluidic-based biosensors allow quantification of total circulating IgE from a drop of blood in 5 minutes Aurélie Buchwalder, Ariel Gomez, Fabien Rebeaud, Iwan Märki P42 Allergen microarray for the analysis of serum IgE binding profile and allergenic activity Jaana Haka, Liisa Hattara, Marika Heikkinen, Merja H Niemi, Juha Rouvinen, Petri Saviranta, Pekka Mattila, Kristiina Takkinen, Marja-Leena Laukkanen P43 Generation of a well-characterized panel of periplaneta americana allergens for component resolved diagnosis Stephanie Eichhorn, Isabel Pablos, Bianca Kastner, Bettina Schweidler, Sabrina Wildner, Peter Briza, Jung-Won Park, Naveen Arora, Stefan Vieths, Gabriele Gadermaier, Fatima Ferreira P44 Improved

  14. Selected Abstracts of the 2nd Congress of joint European Neonatal Societies (jENS 2017; Venice (Italy; October 31-November 4, 2017; Session "Neonatal Fetal Nutrition and Metabolism"

    Directory of Open Access Journals (Sweden)

    --- Various Authors

    2017-10-01

    HYPERGLYCEMIA CORRECTION IN VERY LOW BIRTH WEIGHT PRETERM INFANTS • O. Dobush, D. Dobryanskyy, Z. Salabay, O. BorysiukABS 71. GROWTH AND BODY COMPOSITION ASSESSMENT AT FOLLOW-UP OF VERY PRETERM INFANTS • B. del Rey Hurtado de Mendoza, C. Balcells, M. Izquierdo-Renau, I. Iglesias-PlatasABS 72. GROWTH OF VERY PRETERM INFANTS (< 32 WEEKS WITHIN 3 YEARS AFTER BIRTH • K. Suzuki, Y. Murayama, H. MasakiABS 73. THE ASSOCIATION BETWEEN 25 OH-D VITAMIN LEVELS AND AORTIC, CAROTID INTIMA MEDIA THICKNESS IN HEALTHY NEWBORN INFANTS • D. Arman, Z. Cetiner, A. Erdil, E. YurdakulABS 74. TARGET FORTIFICATION OF BREAST MILK WITH PROTEIN, CARBOHYDRATE AND FAT FOR PRETERM INFANTS IMPROVES GROWTH OUTCOMES: A DOUBLE-BLIND RANDOMIZED CONTROLLED TRIAL • N. Rochow, G. Fusch, A. Ali, A. Bhatia, S. Ahmad, A. Nguyen, L. Chessell, S. el Helou, C. FuschABS 75. HORMONE PROFILE AND ANTHROPOMETRIC ASSESSMENT OF VERY PRETERM NEWBORNS AT FOLLOW-UP • C. Balcells, B. del Rey Hurtado de Mendoza, M. Izquierdo-Renau, I. Iglesias-PlatasABS 76. REDUCING VARIABILITY IN MACRONUTRIENT INTAKES IMPROVES GROWTH IN PRETERM INFANTS: TARGET FORTIFICATION OF BREAST MILK – A DOUBLE-BLIND RANDOMIZED CON­TROLLED TRIAL • A. Bhatia, N. Rochow, G. Fusch, A. Ali, A. Nguyen, A. Bahonjic, C. FuschABS 77. NEWBORN BONE HEALTH IS AFFECTED BY MATERNAL BARIATRIC SURGERY • E. Malchau Carlsen, K.M. Renault, B. Kanijo Møller, K. Nørgaard, L. Nilas, J.E. Bech Jensen, J. Lauenborg, D. Cortes, O. PrydsABS 78. LONG TERM GROWTH AND NEURO­DEVELOPMENTAL OUTCOME IN PRETERM INFANTS BORN SMALL FOR GESTATIONAL AGE (SGA AND INFANTS WITH INTRAUTERINE GROWTH RESTRICTION (IUGR • C. Binder, A. Huber-Dangl, J. Binder, A. Kreissl, M. Thanhaeuser, A. Repa, A. Berger, N. HaidenABS 79. HUMAN MILK COMPOSITION IN RELATION TO GROWTH AND BODY COMPOSITION IN PRETERM INFANTS AT TERM AGE • K.P.T. Vu, D.F.J. Yumani, A.R.C. Laarman, H.N. Lafeber, M.M. van WeissenbruchABS 80. GROWTH PARAMETERS AT BIRTH IN INFANTS WITH CONGENITAL ZIKA VIRUS SYNDROME

  15. SOHO hunts elusive solar prey

    Science.gov (United States)

    1995-10-01

    limited by inclement weather conditions and atmospheric distortion of the Sun’s signal, and of course they cannot observe the Sun at night. Although the weather problem has been removed in orbit around the Earth, observations are still periodically interrupted when an Earth-orbiting spacecraft enters our planet’s shadow. In contrast, SOHO will provide the first long, clean uninterrupted views of the Sun. Science Objectives SOHO will look beyond the visible soar disk, observing through new windows from the centre of the Sun to the Earth. It will examine three regions - the hidden interior of the Sun, the hot transparent solar atmosphere, and the eternal solar wind of charged particles and magnetic fields that continuously flow outward from the Sun. The twelve instruments on board SOHO are designed to study one or two of these regions in a different, yet complimentary way. Their combined data will link events in the Sun’s atmosphere and solar wind changes taking place deep within the Sun. The SOHO mission has three principle scientific objectives: 1. Study of the structure and dynamics of the solar interior 2. Study of the heating mechanisms of the Sun's million-degree atmosphere, or solar corona 3. Investigation of the solar wind, its origin and its acceleration processes. "Never before have solar physicists had the opportunity to work with such a comprehensive observatory giving them access literally to the whole Sun", said Martin C. E. Huber, the Head of ESA's Space Science Department. Taking the pulse of the Sun SOHO wil illuminate the unseen depths of the Sun by recording widespread throbbing motions of the Sun's visible "surface", or photosphere. These oscillations are caused by sounds that are trapped inside the Sun. On striking the surface and rebounding back down, the sound waves cause the gases there to move up and down. Sound waves that penetrate deep within the Sun produce global surface oscillations with longer periods of up to a few hours; smaller

  16. Selected Abstracts of the 2nd Congress of joint European Neonatal Societies (jENS 2017; Venice (Italy; October 31-November 4, 2017; Session "Neurology and Follow-up"

    Directory of Open Access Journals (Sweden)

    --- Various Authors

    2017-10-01

    -26 WEEKS’ GESTATION: A SWEDISH REGIONAL POPULATION BASED CASE CONTROL STUDY • M. Adamsson, B. Hägglöf, M. Bäckman, A. FarooqiABS 26. EARLY RISK FACTORS FOR ADVERSE NEUROMOTOR DEVELOPMENT IN TERM INFANTS AFTER MODERATE HYPOXIC-ISCHAEMIC ENCEPHALOPATHY • A. MaticABS 27. THERAPEUTIC HYPOTHERMIA IN BABIES WITH HYPOXIC-ISCHAEMIC ENCEPHALOPA­THY: EVIDENCE AND CLINICAL PRACTICE • K. Ghazal, A. Panickar, S. GargABS 28. EFFECT OF DEHYDROEPIANDROSTERONE AND ITS SULFATE ESTER ON NEONATAL HYPOXIC-ISCHEMIC BRAIN INJURY – PRELIMINARY DATA • A. Posod, M. Lachinger, B. Vejnoska, E. Huber, M. Urbanek, U. Kiechl-Kohlendorfer, E. GriesmaierABS 29. LONG-TERM EFFECTS OF NEONATAL COMPLICATIONS ON BRAIN GROWTH AT 10 YEARS OF AGE IN CHILDREN BORN EXTREMELY PRETERM • N. Padilla, C. Jimenez-Espinoza, H. Kvanta, U. AdénABS 30. SECRETONEURIN SERUM CONCENTRATIONS CORRELATE WITH ABNORMAL NEURODEVELOPMENTAL OUTCOME AT THE AGE OF 24 MONTHS IN TERM NEONATES WITH ASPHYXIA • K. Wechselberger, A. Schmid, M. Höck, A. Posod, M. Urbanek, R. Fischer-Colbrie, V. Neubauer, U. Kiechl-Kohlendorfer, E. GriesmaierABS 31. SCREENING C677T POLYMORPHISM IN METHYLENETETRAHYDROFOLATE REDUCTASE GENE IN TAIWAN POPULATION • C.Y. Chuang, C.C. Hung, Y.N. Su, P.N. TsaoABS 32. GENETIC CONTRIBUTIONS TO THE DEVELOPMENT OF INTRAVENTRICULAR HEMORRHAGE IN PRETERM NEWBORNS • D. Szpecht, J. Gadzinowski, A. Seremak-Mrozikiewicz, G. Kurzawińska, K. Drews, M. SzymankiewiczABS 33. MRI-DIAGNOSED WHITE MATTER LESIONS IN THE BRAIN OF VLBW BABIES: RISK FACTOR ANALYSIS • A. Parodi, S. Raffa, M. Malova, A. Sannia, M. Severino, G. Morana, D. Tortora, M.G. Calevo, A. Rossi, L.A. RamenghiABS 34. A NEW EVALUATION INDEX FOR LEFT-RIGHT UNEQUAL VENTRICULOMEGALY IN VERY LOW BIRTH WEIGHT INFANTS: ASSOCIATION WITH WALKING DISABILITIES AT 1.6 YEARS OF CORRECTED AGE • T. Ikuta, M. Mizobuchi, Y. Katayama, S. Yoshimoto, T. Ioroi, M. Yamane, T. Morisawa, A. Takatera, M. Ueda, A. Shibata, K. Maeyama, K. Fujioka, N. Nishimura, K