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Sample records for pubescens centro seeds

  1. Towards sustainable seed production of centro in Uganda

    African Journals Online (AJOL)

    Uganda Journal of Agricultural Sciences, 2000, 5: 13- 15. Printed in Uganda. ... cassava tuber yield. Production costs of I kg of seed were Shs 1200, 2000 and 3700 for centro ... of cassava are the second most important staple food of those ...

  2. Estabelecimento de Eriotheca pubescens (Bombacaceae por meio de semeadura direta e de mudas em cascalheira

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    Clarêt Carrijo

    2009-09-01

    Full Text Available This study analyzed the arboreal specie Eriotheca pubescens ( Mart. Former Zucc. Schoutt & Endler. The main objective was to evaluate whether the seed’s performance, seedling production and field`s plantation, through direct sowing, with and without physical protection to develop the recovery of a degraded area that was explored as a gravel mine, at Água Limpa farm, from UnB (University of Brasilia – Brazil. The specie studied indicated that the seeds have neutral photoblastism and about 5.85% of humidity. The laboratory study indicated vermiculite as the most successfully substratum associated with no shading and temperature condition of 25ºC (77 F. The germination percentage increased after 171 days, indicating a great survival index. There was about 76.5% of survival seedlings that were planted in the field. The specie Eriotheca pubescens has a great potential to be used for restoring degraded areas, especially at the heterogeneous plantation.

  3. [Fitness of sexual reproduction of Toona ciliata var. pubescens natural populations and their sexual reproduction and regeneration].

    Science.gov (United States)

    Huang, Hong Lan; Zhang, Lu; Jia, Li Ming; Liang, Yue-Long; Cai, Jun Huo

    2018-04-01

    To examine the reproduction fitness coefficients and individual-level fitness of Toona ciliata var. pubescens, their sexual reproduction and natural regeneration were investigated during 2006-2016, with four natural populations in Jiulianshan National Reserve as test objects. The results showed that there were only 2-10 trees for the natural populations of T. ciliata var. pubescens with a small initial number of fruiting plants (3-9 trees), which were from the initial fruiting plants or their first/second generation. The sexual reproduction of these isolated populations were significantly different, and their seed production capacities tended to decline over time. With the maturing of communities, soil seed banks and seed germinations were extremely poor, and the number of trees that could be growing to mature stage was nearly zero. The optimum maturity age of T. ciliata var. pubescens was about 40 a, and the fitness coefficients (2.0-2.8) rapidly increased in early development stage, but then was sharply reduced (0.3-0.5), and then gradually dropped to almost 0. There were significant differences in the fitness at individual level (0-14 tree·cm -2 ) among different populations, but their values were low (close to zero). Based on the existing reproduction rate, the actual values of sexual reproduction and regeneration fitness were much lower than the predicted ones. Due to the low level of genetic fitness, the sexual reproductive ability of different populations all showed decreasing trends. The natural sexual regeneration ability tended to decline, while the fitness of T. ciliata var. pubescens further decreased. All those factors suggested higher investment risks. Therefore, the systems of sexual reproduction became unbalanced and deteriorating. We proposed that more studies, including breeding mating, pollination, seed setting, and genetic diversity evaluation, are needed. Moreover, we should provide suitable forest environment through cleaning up litter in the

  4. [Chemical constituents from stems of Ilex pubescens].

    Science.gov (United States)

    Xing, Xian-dong; Zhang, Qian; Feng, Feng; Liu, Wen-yuan

    2012-09-01

    To study the chemical constituents from the stems of Ilex pubescens Hook. et Am. The chemical constituents were isolated and purified by various column chromatographic methods with diatomite, silica gel, ODS and Sephadex LH-20. Their structures were identified on physical properties and spectroscopic methods. Nine compounds were isolated and determined as luteolin(1), quercetin(2), hyperoside(3), rutin(4), 1, 5-dihydroxy-3-methyl-anthraquinone(5),3,5-dimethoxy-4-hydroxy-benzoic acid-1-O-beta-D-glucoside(6), hexadecanoic acid(7), stearic acid(8), n-tetratriacontanol(9), respectively. All the compounds are isolated from this plant for the first time, and compounds 5 and 6 are isolated from this genus for the first time.

  5. Effect of bamboo (Phyllostachys pubescens) extract on broiler ...

    African Journals Online (AJOL)

    p2492989

    additive for chickens was effective in maintaining body weight gain and serum enzymatic ... Broiler Huainan partridge chickens (4 weeks old), fed a diet containing ... pubescens) grows particularly well in south-eastern Asia and represents a.

  6. Germination and growth of Magonia pubescens A. ST.-HIL seedlings

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    Ani Cátia Giotto

    2009-03-01

    Full Text Available This study aimed to analyze the germination, growth and development of Magonia pubescens A. St.-Hil. (tinguí ortimbó, a typical species of the deciduous forest. The germination of seeds of four matrices was evaluated at different treatments: directsowing in greenhouse (50% of shade, direct sowing under full sunlight and moistened paper at laboratory condition and underfluorescent light with photoperiod of 12 hours in ambient temperature. The germinated seeds under laboratory conditions weretransplanted to polyethylene bags with soil under full sunlight and 50% of shade. The variables evaluated were: time of the first andlast germination, germinability; average time and the rates of speed of germination index. In addition there were evaluated the seedlingheight, stem base diameter, number of leaf and leaflets were monitored at 30, 60, 90 and 120 days. The species presented highgerminability at laboratory conditions (G> 90% and under full sunlight (96%>G>56%, however, the germinability in 50% shadepresented inferior result (G0.05. The leaf and leaflets number varied among treatments, with highest average for seedling under full sunlight. Suggesting thatMagonia pubescens A. St.-Hil. is a useful species for rehabilitation of degraded areas.

  7. Inhibitory effects of total saponins from Ilex pubescens Hook against ...

    African Journals Online (AJOL)

    Purpose: To study the protective effects of total saponins from Ilex pubescens Hook (IPTS) against cardiomyocyte apoptosis. Methods: Response surface methodology (RSM) based on Box-Benhnken Design (BBD) was carried out to optimize the extraction of IPTS. Thereafter, H9c2 cell model prepared by hydrogen ...

  8. Acute toxicity study of methanolic extract of Asparagus pubescens ...

    African Journals Online (AJOL)

    The acute toxicity study of methanolic extract of Asparagus pubescens root was studied on rats. The indices of the study were the liver enzymes (transaminases), cholesterol, creatinine and urea serum levels as well as the ionic analysis. Both alanine aminotransferase (ALT) and. Aspartate aminotransferase (AST) showed a ...

  9. Effect of methanolic extract of Asparagus pubescens root on non ...

    African Journals Online (AJOL)

    The non-selective inhibition of the agonists by the extract on non-vascular smooth muscle may in part be related to its non-specific mechanism of action. Keywords: Asparagus pubescens, non-vascular smooth muscle, methanolic extract, non-specific mechanism. West African Journal of Pharmacology and Drug Research ...

  10. Effect of bamboo ( Phyllostachys pubescens ) extract on broiler ...

    African Journals Online (AJOL)

    Effect of bamboo ( Phyllostachys pubescens ) extract on broiler chickens under cold stress. ... South African Journal of Animal Science ... powdered bamboo extract (BFRE) as a feed additive for chickens was effective in maintaining body weight gain and serum enzymatic activity when birds are exposed to cold stress. Broiler ...

  11. Biology and control of Eriophyid mites with a case study of Aceria sp. on New Mexico olive (Forestiera pubescens Nutt. var. pubescens)

    Science.gov (United States)

    Tessa R. Grasswitz

    2012-01-01

    The biology, recognition, and impact of eriophyid mites (with emphasis on species associated with trees and shrubs) are briefly reviewed. A case study of a leaf-curling eriophyid mite (Aceria sp.) attacking New Mexico olive (Forestiera pubescens Nutt. var. pubescens) is used to illustrate the complexities of developing control strategies for eriophyids in native plant...

  12. Fatty acid profiles of some Fabaceae seed oils

    Science.gov (United States)

    The fatty acid profiles of six seed oils of the Fabaceae (Leguminosae) family are reported and discussed. These are the seed oils of Centrosema pubescens, Clitoria ternatea, Crotalaria mucronata, Macroptilium lathyroides, Pachyrhizus erosus, and Senna alata. The most common fatty acid in the fatty a...

  13. DNA typing of birch: Development of a forensic STR system for Betula pendula and Betula pubescens.

    Science.gov (United States)

    Wesselink, Monique; Dragutinović, Aleksandar; Noordhoek, Jeroen W; Bergwerff, Leonie; Kuiper, Irene

    2018-04-07

    Although botanical trace evidence is often encountered in case investigations, the utilization of such traces in forensic investigations is still limited. Development of a forensic STR system for the two species of Betula (birch) indigenous to and abundant in North West Europe is a step in enhancing the applicability of traces from these species. We describe six microsatellite markers developed for birch species in detail, including repeat structure, and we propose a nomenclature for the encountered alleles. To assess the population characteristics, the genetic composition of wild, planted and intermediate populations of Betula pendula (a diploid species) and Betula pubescens (a tetraploid species) were investigated. The genetic differences between these two species were larger than the differences between populations of one species, even when both species co-occurred at one location. Therefore allele frequencies were estimated for both species separately. General, conservative random match probabilities were estimated for wild trees based on these allele frequencies (5∙10 -6 for the diploid B. pendula and 1∙10 -13 for the tetraploid B. pubescens), illustrating the potential relevance if trace evidence secured from a suspect is found to match a birch tree growing on or near a crime scene. Apart from wild trees, planted Betula trees also occur that may not originate from seeds, but may have been propagated through cloning. Based on the studied Betula trees, the random match probability of a potentially planted profile might be as high as 1.4∙10 -2 . Copyright © 2018 Elsevier B.V. All rights reserved.

  14. seeds

    African Journals Online (AJOL)

    Owner

    peptidohydrolase (8.0%) from mung bean seedlings. (Baumgartner and Chrispeels, 1977), EP-HG (4.5%) from horse gram seedlings ( Rajeswari, 1997), acidic protease (15%) from germinating winged-bean seeds. (Usha and Singh, 1996) and EP-1 (1.6%) from barley seedlings and GA3-induced cysteine protease (3.38%).

  15. Metabolomic Profiling of the Nectars of Aquilegia pubescens and A. Canadensis.

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    Christos Noutsos

    Full Text Available To date, variation in nectar chemistry of flowering plants has not been studied in detail. Such variation exerts considerable influence on pollinator-plant interactions, as well as on flower traits that play important roles in the selection of a plant for visitation by specific pollinators. Over the past 60 years the Aquilegia genus has been used as a key model for speciation studies. In this study, we defined the metabolomic profiles of flower samples of two Aquilegia species, A. Canadensis and A. pubescens. We identified a total of 75 metabolites that were classified into six main categories: organic acids, fatty acids, amino acids, esters, sugars, and unknowns. The mean abundances of 25 of these metabolites were significantly different between the two species, providing insights into interspecies variation in floral chemistry. Using the PlantSEED biochemistry database, we found that the majority of these metabolites are involved in biosynthetic pathways. Finally, we explored the annotated genome of A. coerulea, using the PlantSEED pipeline and reconstructed the metabolic network of Aquilegia. This network, which contains the metabolic pathways involved in generating the observed chemical variation, is now publicly available from the DOE Systems Biology Knowledge Base (KBase; http://kbase.us.

  16. Metal accumulation and detoxification mechanisms in mycorrhizal Betula pubescens.

    Science.gov (United States)

    Fernández-Fuego, D; Bertrand, A; González, A

    2017-12-01

    Metal detoxification in plants is a complex process that involves different mechanisms, such as the retention of metals to the cell wall and their chelation and subsequent compartmentalization in plant vacuoles. In order to identify the mechanisms involved in metal accumulation and tolerance in Betula pubescens, as well as the role of mycorrhization in these processes, mycorrhizal and non-mycorrhizal plants were grown in two industrial soils with contrasting concentrations of heavy metals. Mycorrhization increased metal uptake at low metal concentrations in the soil and reduced it at high metal concentrations, which led to an enhanced growth and biomass production of the host when growing in the most polluted soil. Our results suggest that the sequestration on the cell wall is the main detoxification mechanism in white birch exposed to acute chronic metal-stress, while phytochelatins play a role mitigating metal toxicity inside the cells. Given its high Mn and Zn root-to-shoot translocation rate, Betula pubescens is a very promising species for the phytoremediation of soils polluted with these metals. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Pterodon pubescens Benth: stability study of microencapsulated extract and isolated compounds monitored by antinociceptive assays

    International Nuclear Information System (INIS)

    Servat, Leila; Spindola, Humberto M.; Carvalho, Joao E. de; Foglio, Mary A.; Rodrigues, Rodney A.F.; Sousa, Ilza M.O.; Ruiz, Ana L.T.G.

    2012-01-01

    Pterodon pubescens Benth. (Pp) seeds, commercially available in Brazil, are used in folk medicine in anti-inflammatory, analgesic, and anti-rheumatic preparations. The present study demonstrated the antinociceptive properties of isomers 6a-hydroxy-7β-acetoxy-vouacapan-17β--oate methyl ester and 6a-acetoxy-7β-hydroxy-vouacapan-17β-oate methyl ester (C1), isolated from (Pp), employing different experimental models. A stability study was performed to investigate the relationship of microencapsulation by spray-drying on the maintenance of antinociceptive action. Therefore, C1 and Pp extract samples were monitored in accelerated stability study, evaluating both microencapsulated and non-microencapsulated samples. It was observed that sample C1 possess antinociceptive activity revealed by writhing and formalin tests; C1 showed significantly anti-allodynic, but not ntihyperalgesic effect; the microencapsulation maintained the activity and integrity of both, sample C1 and Pp crude extract; microencapsulation by spray drying is a useful alternative to increase shelf life. (author)

  18. ANÁLISIS CARIOTÍPICO DE CAPSICUM PUBESCENS (SOLANACEAE "ROCOTO"

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    Misael Guevara

    2014-06-01

    Full Text Available Análisis cariotípico de Capsicum pubescens R&P (Solanaceae. Los cromosomas han sido descritos, comparados y dibujados, usando una técnica de coloración modificada, C. pubescens tiene un número cromosómico diploide 2n = 24, de los cuales 11 pares son metacéntricos y 1 par submetacéntrico.

  19. Occurrence and structure of extrafloral nectariesin Pterodon pubescens Benth. and Pterodon polygalaeflorus Benth.

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    Paiva Élder Antônio Sousa e

    2001-01-01

    Full Text Available Extrafloral nectaries (EFNs are structurally variable and widely spread among the angiosperms. The occurrence of EFNs in leaves of Pterodon polygalaeflorus Benth. and Pterodon pubescens Benth. (Fabaceae: Papilionoideae were detected in adult specimens, at the time of production of new buds and flowers. The goals of the present study are to register the occurrence of the EFNs in P. pubescens and P. polygalaeflorus, and provide comparative data on the anatomical structures. The EFNs occur in the rachis and are located under the insertion of each petiolule. Each nectary consists of a small elevation whose apical portion is deeply invaginated, resulting in a depression (secretory pole, a common characteristic of both species. Unicellular, nonglandular trichomes occur along the rachis, being less numerous in P. polygalaeflorus while in P. pubescens they cover the EFNs. The secretory tissue consists of parenchyma cells with dense cytoplasm compactly arranged. The nectar reaches the surface of the EFNs by rupturing the thin cuticle which covers the secretory pole, since both species lack stomata or any other interruption at the epidermis. The basic difference between the two species, in relation to the EFNs, is the density of the pubescence, which is always greater in P. pubescens. Structural and dimensional modifications may be observed, even between basal and apical nectaries in the same rachis, so it does not constitute a taxonomical tool.

  20. Male Fruit Fly, Bactrocera tau (Diptera; Tephritidae) attractants from Elsholtzia pubescens Bth

    NARCIS (Netherlands)

    Hasyim, A.; Muryati,; Mizu Istianto,; Kogel, de W.J.

    2007-01-01

    Studies on the ability of different plant extracts to attract male fruit flies indicated that an extract of Elsholtzia pubescens attracted male Bactrocera tau fruit flies in Passion fruit orchards in West Sumatra, Indonesia. Analyses of the plant extract showed that the major compound present was

  1. Decolorization and detoxification of reactive industrial dyes by immobilized fungi Trametes pubescens and Pleurotus ostreatus

    Czech Academy of Sciences Publication Activity Database

    Caiseri, L.; Varese, G.C.; Anastasi, A.; Prigione, V.; Svobodová, Kateřina; Marchisio, V.F.; Novotný, Čeněk

    2008-01-01

    Roč. 53, č. 1 (2008), s. 44-52 ISSN 0015-5632 R&D Projects: GA AV ČR IAA6020411 Institutional research plan: CEZ:AV0Z50200510 Keywords : decolorization * detoxification * trametes pubescens Subject RIV: EE - Microbiology, Virology Impact factor: 1.172, year: 2008

  2. ACTIVIDAD FITOTÓXICA DE LOS EXTRACTOS DE CHILE MANZANO (Capsicum pubescens R & P

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    Ma. del Rosario García-Mateos

    2013-01-01

    Full Text Available La búsqueda de nuevos herbicidas de origen natural se ha realizado mediante los estudios de sustancias fitotóxicas debido a que no afectan el ambiente y son menos tóxicos que los sintéticos. En la literatura existen pocas evidencias de los efectos fitotóxicos de los capsaicinoides presentes en el género Capsicum , por lo que el objetivo de la presente investigación fue evaluar in vitro el efecto fitotóxico de los extractos del fruto de chile manzano ( Capsicum pubescens R & P en la germinación y vigor de Amaranthus hybridus L., Lactuca sativa L., Ipomoea purpurea L. y Bidens odorata Cav. Se realizó una prueba de germinación de acuerdo con la metodología de la International Seed Testing Asociation. El efecto de seis concentraciones de extractos (0.5, 1.5, 2.5, 5.0, 10, 20 % v/v, capsaicina (0.1 p/v y ABA (0.01 p/v fue evaluado en un experimento, usando un diseño completamente al azar con cuatro repeticiones de 50 semillas cada una. El testigo fue agua destilada. Las variables evaluadas fueron el número de semillas germinadas (NSG y el vigor (longitud de radícula, LR; longitud de la parte aérea, LPA. Se realizaron análisis de varianza y comparaciones de medias de Tukey ( P ≤ 0.05. El extracto de diclorometano, comparado con el extracto etéreo, causó el mayor efecto fitotóxico sobre la germinación de A. hybridus y L. sativa , en las que el porcentaje se redujo hasta 100 %. También afectó en forma negativa el vigor de I. purpurea . El efecto fitotóxico de la capsaicina sobre la germinación y vigor sólo se manifestó en A. hybridus.

  3. Production, Competition Indices, and Nutritive Values of Setaria splendida, Centrosema pubescens, and Clitoria ternatea in Mixed Cropping Systems in Peatland

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    A. Ali

    2013-12-01

    Full Text Available This research was conducted to evaluate production, different competition indices and nutritive value of Setaria splendida, Centrosema pubescens, and Clitoria ternatea in monoculture and mix cropping system on peat soil land. The experiment was set up in a randomized complete block design with five treatments and three replications. The five treatments were: S. splendida sole cropping (SS, C. pubescens sole cropping (CP, C. ternatea sole cropping (CT, S. splendida and C. pubescens mix cropping (SS/CP and S. splendida/C. ternatea mix cropping (SS/CT. The DM yield of S. splendida in mixed cropping with C. pubescens increased 43.4% and in mix cropping with C. ternatea increased 15.7% compared to sole S. splendida. The value of land equivalent ratio of SS/CP (LERSS/CP was >1. The LERSS/CT value was 1. The competition ratio (CR values of S. splendida in both mix cropping were >1. The agressivity (A values of S. splendida in both mix cropping were positive. The crude protein, NDF and ADF content of forage were not affected by mix cropping system. In conclusion, mix cropping in peatland do not affect productivity and nutritive value of S. splendida, C. pubescens, and C. ternatea. S. splendida is more effective in exploiting environmental resources when intercropped with C. pubescens compared to C. ternatea on peatland.

  4. Phenology and interspecific association of Forficula auricularia and Forficula pubescens in apple orchards

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    Jaume Lordan

    2015-03-01

    Full Text Available The European earwig Forficula auricularia L. (Dermaptera: Forficulidae has been widely studied as a key predator of pests in temperate regions, but its phenology and behavior may differ in warmer areas such as the Mediterranean. Here we assessed the phenology, aggregation, and interspecific association of F. auricularia and Forficula pubescens Gené, the only two species found consistently in both ground and canopy shelters in Mediterranean apple orchards. In addition to F. auricularia and F. pubescens, three other earwig species, namely Labidura riparia Pallas, Nala lividipes Dufour and Euborellia moesta Gené, were found occasionally. The mature stages of F. auricularia were observed mainly from May to November in tree shelters and immature ones from October to June in ground shelters. Adult individuals of F. pubescens were observed year-round and nymph instars were detected from April to June in ground as well as in tree shelters. The suitability of the current degree-days models for temperate regions was evaluated for the prediction of European earwig phenology in a Mediterranean climate. Regarding interspecific association, F. auricularia and F. pubescens co-occurred in canopies without apparent competition. This study provides useful weekly data about the phenology of the two earwig species throughout the year that can be used to detect the key periods during which to enhance their populations in pip fruit orchards or to control them in stone fruit crops. Furthermore, our results are of relevance for the development of new phenological models of earwigs in Mediterranean areas where nymphs hibernate, a feature that makes current models inaccurate.

  5. Phenology and interspecific association of Forficula auricularia and Forficula pubescens in apple orchards

    Energy Technology Data Exchange (ETDEWEB)

    Lordan, J.; Alegre, S.; Moerkens, R.; Sarasúa, M.J.; Alins, G.

    2015-07-01

    The European earwig Forficula auricularia L. (Dermaptera: Forficulidae) has been widely studied as a key predator of pests in temperate regions, but its phenology and behavior may differ in warmer areas such as the Mediterranean. Here we assessed the phenology, aggregation, and interspecific association of F. auricularia and Forficula pubescens Gené, the only two species found consistently in both ground and canopy shelters in Mediterranean apple orchards. In addition to F. auricularia and F. pubescens, three other earwig species, namely Labidura riparia Pallas, Nala lividipes Dufour and Euborellia moesta Gené, were found occasionally. The mature stages of F. auricularia were observed mainly from May to November in tree shelters and immature ones from October to June in ground shelters. Adult individuals of F. pubescens were observed year-round and nymph instars were detected from April to June in ground as well as in tree shelters. The suitability of the current degree-days models for temperate regions was evaluated for the prediction of European earwig phenology in a Mediterranean climate. Regarding interspecific association, F. auricularia and F. pubescens co-occurred in canopies without apparent competition. This study provides useful weekly data about the phenology of the two earwig species throughout the year that can be used to detect the key periods during which to enhance their populations in pip fruit orchards or to control them in stone fruit crops. Furthermore, our results are of relevance for the development of new phenological models of earwigs in Mediterranean areas where nymphs hibernate, a feature that makes current models inaccurate. (Author)

  6. Rhizosphere bacterial diversity and heavy metal accumulation in Nymphaea pubescens in aid of phytoremediation potential

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    RAISA KABEER

    2014-04-01

    Full Text Available The present work aims to characterize the bacterial diversity of the rhizosphere system of Nymphaea pubescens and the sediment system where it grows naturally. Heavy metal content in the sediment and Nymphea plant from the selected wetland system were also studied. Results of the current study showed that the concentration of copper, zinc and lead in the sediment ranged from 43 to 182 mg/Kg, from 331 to 1382 mg/Kg and from 121 to 1253 mg/Kg, respectively. Cadmium concentration in sediment samples was found to be zero and the order of abundance of heavy metals in the sediment samples was Zn>Pb>Cu>Cd. The abundance patterns of heavy metals in leaf, petiole and root were Cd>Cu>Pb>Zn. Microbial load in rhizosphere of Nymphea pubescens ranged from 93×102 to 69×103 and that of sediment was 62×102 to 125×103. Bacterial load in rhizosphere was higher than that of growing sediment. Four bacterial genera were identified from the rhizosphere of Nymphaea pubescens which include Acinetobacter, Alcaligens, Listeria and Staphylococcus. Acinetobacter, Alcaligens and Listeria are the three bacterial genera isolated from sediment samples. Copper resistance studies of the 14 bacterial isolates from rhizosphere and 7 strains from sediment samples revealed that most of them showed low resistance (<100 μg/ml and very few isolates showed high resistance of 400-500 μg/ml.

  7. Retranslocation and localization of nutrient elements in various organs of moso bamboo (Phyllostachys pubescens)

    Energy Technology Data Exchange (ETDEWEB)

    Umemura, Mitsutoshi, E-mail: mitsutoshi.ume@gmail.com; Takenaka, Chisato, E-mail: chisato@agr.nagoya-u.ac.jp

    2014-09-15

    Moso bamboo (Phyllostachys pubescens) is one of the major giant bamboo species growing in Japan, and the invasion of mismanaged bamboo populations into contiguous forests has been a serious problem. To understand expansion mechanisms of the bamboo, it is important to obtain some first insights into the plant's rapid growth from the viewpoints of the nutrient dynamics in bamboo organs. We have investigated seasonal changes in the concentrations of several nutrient elements in leaves of the plants from three P. pubescens forests and the distributions of those elements in both mature (culms, branches, leaves, roots, and rhizomes) and growing organs (shoots and rhizomes). Among all elements analyzed, boron (B) concentrations in leaves showed a specific seasonal variation that was synchronous across all study sites. Boron was detected at high concentrations in the younger parts of growing rhizomes and shoots, and in mature leaves. These results indicate that P. pubescens could actively utilize B for vegetative reproduction by the retranslocation and the local accumulation behaving as mobile B. Silicon (Si) was found in high concentrations in surface parts of culms and in the mature sheaths of growing rhizomes and shoots following those in mature leaves. P. pubescens, a plant known to accumulate Si, accumulated only low levels of Ca and B in the leaves, indicating that it is possible to utilize more Si for cell wall enhancement than Ca or B. In both mature culms and rhizomes, zinc (Zn) was found at much higher concentrations in the nodes with meristematic tissue than those in internodes, indicating that Zn might play a role in promoting culm and rhizome elongation. We suggest that specific and local utilization of B, Si, and Zn in P. pubescens might support the vegetative reproduction and rapid growth. - Highlights: • The bamboo efficiently utilizes boron by the retranslocation and local accumulation. • Zinc found in nodes at high concentrations may support

  8. Retranslocation and localization of nutrient elements in various organs of moso bamboo (Phyllostachys pubescens)

    International Nuclear Information System (INIS)

    Umemura, Mitsutoshi; Takenaka, Chisato

    2014-01-01

    Moso bamboo (Phyllostachys pubescens) is one of the major giant bamboo species growing in Japan, and the invasion of mismanaged bamboo populations into contiguous forests has been a serious problem. To understand expansion mechanisms of the bamboo, it is important to obtain some first insights into the plant's rapid growth from the viewpoints of the nutrient dynamics in bamboo organs. We have investigated seasonal changes in the concentrations of several nutrient elements in leaves of the plants from three P. pubescens forests and the distributions of those elements in both mature (culms, branches, leaves, roots, and rhizomes) and growing organs (shoots and rhizomes). Among all elements analyzed, boron (B) concentrations in leaves showed a specific seasonal variation that was synchronous across all study sites. Boron was detected at high concentrations in the younger parts of growing rhizomes and shoots, and in mature leaves. These results indicate that P. pubescens could actively utilize B for vegetative reproduction by the retranslocation and the local accumulation behaving as mobile B. Silicon (Si) was found in high concentrations in surface parts of culms and in the mature sheaths of growing rhizomes and shoots following those in mature leaves. P. pubescens, a plant known to accumulate Si, accumulated only low levels of Ca and B in the leaves, indicating that it is possible to utilize more Si for cell wall enhancement than Ca or B. In both mature culms and rhizomes, zinc (Zn) was found at much higher concentrations in the nodes with meristematic tissue than those in internodes, indicating that Zn might play a role in promoting culm and rhizome elongation. We suggest that specific and local utilization of B, Si, and Zn in P. pubescens might support the vegetative reproduction and rapid growth. - Highlights: • The bamboo efficiently utilizes boron by the retranslocation and local accumulation. • Zinc found in nodes at high concentrations may support

  9. Centro dotacional integrado Arganzuela

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    Plaza, Luis F.

    2002-02-01

    Full Text Available This project becomes alter the remodeling of the former Madrid 's Bus Station into a multi-purpose facility. The main compositional feature is an open passage across the large original building which enables the clear arranging of the uses and provides more lighting. A complex intervention allows to take advantage of great part of the existing structure and to adapt it to the new uses. A renovated image. as well as the new pedestrian tours in the open spaces. emphasize the building 's role as promotor of the recovering of a degradeted neighbourhood.El Centro Dotacional Integrado Arganzuela es fruto de la remodelación de la antigua Estación Sur de Autobuses de Madrid, para equipamiento deportivo y socio-cultural. El argumento básico del proyecto es una calle interior que fragmenta la gran construcción original, organiza las distintas actividades y multiplica las posibilidades del edificio para ver y ser visto. Una compleja intervención permite aprovechar gran parte de la estructura existente y adaptarla a los nuevos usos. La rotundidad de la nueva imagen así como la creación de nuevos espacios peatonales contribuyen a la regeneración de un entorno urbano degradado.

  10. Sesquiterpenes and other constituents from leaves of Pterodon pubescens Benth (Leguminosae); Sesquiterpenos e outros constituintes das folhas de Pterodon pubescens Benth (Leguminosae)

    Energy Technology Data Exchange (ETDEWEB)

    Miranda, Mayker Lazaro Dantas; Garcez, Fernanda Rodrigues; Garcez, Walmir Silva, E-mail: walmir.garcez@ufms.br [Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, MS (Brazil). Instituto de Quimica; Abot, Alfredo Raul [Universidade Estadual de Mato Grosso do Sul (UEMS), Aquidauana, MS (Brazil)

    2014-05-15

    In addition to β-sitosterol, stigmasterol, phaeophitin A, luteolin, kaempferol, quercetin, (+)-catechin, quercetin-3-O-α-L-rhamnopyranoside, rutin, and p-hydroxy-benzoic acid, six known sesquiterpenes, namely (rel)-2β,6β-epoxy-5β-hydroxy-isodaucane, oplopanone, 1β,6α-dihydroxy-4(15)-eudesmene, caryophyllene oxide, α-cadinol, and spathulenol, were isolated from the leaves of Pterodon pubescens (Leguminosae) growing in the Cerrado of Mato Grosso do Sul, Brazil. The (rel)-2β,6β-epoxy-5β-hydroxy-isodaucane corresponds to the correct structure of homalomenol D. The sesquiterpene oplopanone, which bears a modified cadinane skeleton, is being reported for the first time in this genus. The structures of the compounds were determined on the basis of spectral data (MS, IR, and NMR-1D and 2D) and subsequent comparison with data reported in the literature. (author)

  11. Experimental Research on Destruction Mode and Anchoring Performance of Carbon Fiber Phyllostachys pubescens Anchor Rod with Different Forms

    Directory of Open Access Journals (Sweden)

    Wang Yulan

    2018-01-01

    Full Text Available The anchoring technology is extensively applied in reinforcing protection of the earth relics. Now that no specification is available for different new anchor rods in earth relics protection due to diversified destruction modes of earth relics and complexity of engineering technology conditions, it is urgent to guide reinforcing design and construction with a complete detailed anchor rod research document. With the new carbon fiber Phyllostachys pubescens anchor rod as the research object, six lots of in situ tests are designed to, respectively, study the destruction mode and anchoring performance of the carbon fiber Phyllostachys pubescens anchor rod under different anchor length L, anchor rod diameter D, bore diameter H, grouting material S, rib spacing R, and inclination angle A in this paper. By studying load shift curve experiment in drawing of the anchor rod, the destruction mode and ultimate bearing capacity of the carbon fiber Phyllostachys pubescens anchor rod in different experiment lots are obtained, and the concept of permitted application value N in anchor rod design is proposed. By studying strain distribution characteristics of anchor rods in experimental lots along the length direction under action of the permitted application value N and combining the existing destruction mode and ultimate bearing capacity, this paper analyzes influences of L, D, H, S, R, and A on anchoring effect of the carbon fiber Phyllostachys pubescens anchor rod; gives the reasonable value range of L, D, H, and R when the carbon fiber Phyllostachys pubescens anchor rod is used for reinforcing design of the earth relics; and provides favorable experiment basis for reinforcing design of the earth relics based on the carbon fiber Phyllostachys pubescens anchor rod.

  12. Isoprene emission rates and fluxes measured above a Mediterranean oak ( Quercus pubescens) forest

    Science.gov (United States)

    Simon, V.; Dumergues, L.; Bouchou, P.; Torres, L.; Lopez, A.

    2005-03-01

    The present work, carried out as part of the European fiEld experimentS to COnstrain Models of atmospheric Pollution and Transport of Emissions project (ESCOMPTE), brings a new contribution to the inventory of the main natural hydrocarbons sources that are liable to participate in the production of ozone. The measurement campaign was conducted in Montmeyan, a site close to Marseilles (France), with the aim of quantifying the terpenic emission pattern and the behaviour of Quercus pubescens, an important Mediterranean tree species. Biogenic emissions by Q. pubescens were determined by the enclosure of an intact branch of this tree in a Teflon cuvette. The total monoterpenic emission rates thus recorded were found to reach maximum values ranged between 40 and 350 μg g Dry Weight-1 h -1. Emissions were correlated strongly with leaf temperature and Photosynthetic Active Radiation (PAR). The fluxes were also determined by extrapolating the results of the enclosure method and by using aerodynamic gradient method. They reach around 73 mg m -2 h -1 with the first method and 55 mg m -2 h -1 with the second one. The obtained values fit with a maximal ratio of 2.

  13. From the Western Alps across Central Europe: Postglacial recolonisation of the tufa stream specialist Rhyacophila pubescens (Insecta, Trichoptera

    Directory of Open Access Journals (Sweden)

    Haase Peter

    2011-05-01

    Full Text Available Abstract Background Dispersal rates, i.e. the effective number of dispersing individuals per unit time, are the product of dispersal capacity, i.e. a species physiological potential for dispersal, dispersal behaviour, i.e. the decision to leave a habitat patch in favour of another, and connectivity of occupied habitat. Thus, dispersal of species that are highly specialised to a certain habitat is limited by habitat availability. Species inhabiting very stable environments may also adopt a sedentary life-style. Both factors should lead to strong genetic differentiation in highly specialised species inhabiting stable environments. These two factors apply to our model species Rhyacophila pubescens a highly specialised freshwater insect that occurs in tufa springs, a very stable habitat. Results We examined the genetic population structure and phylogeography using range-wide mtCOI sequence and AFLP data from 333 individuals of R. pubescens. We inferred the location of Pleistocene refugia and postglacial colonisation routes of R. pubescens, and examined ongoing local differentiation. Our results indicate intraregional differentiation with a high number of locally endemic haplotypes, that we attributed to habitat specificity and low dispersal rates of R. pubescens. We observed high levels of genetic diversity south of the Alps and genetic impoverishment north of the Alps. Estimates of migrants placed the refugium and the source of the colonisation in the Dauphiné Alps (SW Alps. Conclusions This is the first example of an aquatic insect with a colonisation route along the western margin of the Alps to the Central European highlands. The study also shows that specialisation to a stable environment may have promoted a behavioural shift to decreased dispersal rates, leading to stronger local population differentiation than in less specialised aquatic insects. Alternatively, the occurrence of highly specialised tufa spring habitats may have been more

  14. RNA-seq analysis of Quercus pubescens Leaves: de novo transcriptome assembly, annotation and functional markers development.

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    Sara Torre

    Full Text Available Quercus pubescens Willd., a species distributed from Spain to southwest Asia, ranks high for drought tolerance among European oaks. Q. pubescens performs a role of outstanding significance in most Mediterranean forest ecosystems, but few mechanistic studies have been conducted to explore its response to environmental constrains, due to the lack of genomic resources. In our study, we performed a deep transcriptomic sequencing in Q. pubescens leaves, including de novo assembly, functional annotation and the identification of new molecular markers. Our results are a pre-requisite for undertaking molecular functional studies, and may give support in population and association genetic studies. 254,265,700 clean reads were generated by the Illumina HiSeq 2000 platform, with an average length of 98 bp. De novo assembly, using CLC Genomics, produced 96,006 contigs, having a mean length of 618 bp. Sequence similarity analyses against seven public databases (Uniprot, NR, RefSeq and KOGs at NCBI, Pfam, InterPro and KEGG resulted in 83,065 transcripts annotated with gene descriptions, conserved protein domains, or gene ontology terms. These annotations and local BLAST allowed identify genes specifically associated with mechanisms of drought avoidance. Finally, 14,202 microsatellite markers and 18,425 single nucleotide polymorphisms (SNPs were, in silico, discovered in assembled and annotated sequences. We completed a successful global analysis of the Q. pubescens leaf transcriptome using RNA-seq. The assembled and annotated sequences together with newly discovered molecular markers provide genomic information for functional genomic studies in Q. pubescens, with special emphasis to response mechanisms to severe constrain of the Mediterranean climate. Our tools enable comparative genomics studies on other Quercus species taking advantage of large intra-specific ecophysiological differences.

  15. Centrosema pubescens

    African Journals Online (AJOL)

    HP USER

    to degrade fibrous feedstuffs and express their nutrient both to the host ... identified using a white nylon thread bearing a plastic plate at one ... forage fraction degraded in the rumen. ..... bacteria, especially when high concentrate (> 50%) diets.

  16. Intraspecific variation of Bothrops pubescens (cope, 1869 venom in Uruguay (serpentes: viperidae

    Directory of Open Access Journals (Sweden)

    V. Morais

    2006-01-01

    Full Text Available In Uruguay, there was no information about the variations degree in Bothrops pubescens venoms until the present work, in which we investigated intraspecific venom variation using polyacrylamide gel electrophoresis (SDS-PAGE. We found some differences in the venom protein profile; however, they were not related to the parameters studied (geographic distribution, weight, sex, and captivity time. Moreover, we distinguished two different groups in relation to band densities at 49 and 57 kDa. Specimens with predominant density in the 49kDa band tend to be predominantly females. Weight distribution in this group extended for all the range (150-1500 g with an average weight of 720 g. The other group (57kDa predominant band showed restricted weight range (150-400 g with an average weight of 280 g. Cluster analysis was also performed. The variability observed in the venom profile probably corresponds to genetic variations.

  17. Sesquiterpenes and other constituents from leaves of Pterodon pubescens Benth (Leguminosae)

    International Nuclear Information System (INIS)

    Miranda, Mayker Lazaro Dantas; Garcez, Fernanda Rodrigues; Garcez, Walmir Silva

    2014-01-01

    In addition to β-sitosterol, stigmasterol, phaeophitin A, luteolin, kaempferol, quercetin, (+)-catechin, quercetin-3-O-α-L-rhamnopyranoside, rutin, and p-hydroxy-benzoic acid, six known sesquiterpenes, namely (rel)-2β,6β-epoxy-5β-hydroxy-isodaucane, oplopanone, 1β,6α-dihydroxy-4(15)-eudesmene, caryophyllene oxide, α-cadinol, and spathulenol, were isolated from the leaves of Pterodon pubescens (Leguminosae) growing in the Cerrado of Mato Grosso do Sul, Brazil. The (rel)-2β,6β-epoxy-5β-hydroxy-isodaucane corresponds to the correct structure of homalomenol D. The sesquiterpene oplopanone, which bears a modified cadinane skeleton, is being reported for the first time in this genus. The structures of the compounds were determined on the basis of spectral data (MS, IR, and NMR-1D and 2D) and subsequent comparison with data reported in the literature. (author)

  18. Sesquiterpenos e outros constituintes das folhas de Pterodon pubescens Benth (Leguminosae

    Directory of Open Access Journals (Sweden)

    Mayker Lazaro Dantas Miranda

    2014-06-01

    Full Text Available In addition to β-sitosterol, stigmasterol, phaeophitin A, luteolin, kaempferol, quercetin, (+-catechin, quercetin-3-O-α-L-rhamnopyranoside, rutin, and p-hydroxy-benzoic acid, six known sesquiterpenes, namely (rel-2β,6β-epoxy-5β-hydroxy-isodaucane, oplopanone, 1β,6α-dihydroxy-4(15-eudesmene, caryophyllene oxide, α-cadinol, and spathulenol, were isolated from the leaves of Pterodon pubescens (Leguminosae growing in the Cerrado of Mato Grosso do Sul, Brazil. The (rel-2β,6β-epoxy-5β-hydroxy-isodaucane corresponds to the correct structure of homalomenol D. The sesquiterpene oplopanone, which bears a modified cadinane skeleton, is being reported for the first time in this genus. The structures of the compounds were determined on the basis of spectral data (MS, IR, and NMR-1D and 2D and subsequent comparison with data reported in the literature.

  19. Efikasi Asap Cair dari Kayu Laban (Vitex pubescens terhadap Rayap Coptotermes curvignathus

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    HA Oramahi

    2014-03-01

    Full Text Available ABSTRACT Efficacy of liquid smoke from laban wood (Vitex pubescens against Coptotermes curvignathus. Antitermitic activities of liquid smoke produced from Vitex pubescens against C. curvignathus was evaluated in this study. This research was conducted in two steps, i.e. pyrolisis of liquid smoke and efficacy test of liquid smoke as antitermite. Three kinds of liquid smoke were produced at three different pyrolysis temperatures, i.e.  350 oC, 400 oC and 450 oC. Termiticidal activity was evaluated by a no-choice test.  The research indicates that concentration of liquid smoke and pyrolysis temperatures significantly affected  termite mortality and mass losses of the filter paper. The relationship between the concentration of liquid smoke (X and termite mortality (Y at 350 oC, 400 oC,  and  450 oC were Y = 31,4 + 11,76X,  (r2 = 0,60,  Y = 30 + 11,86X (r2 = 0,59,  and Y = 26,66 + 7,6X (r2 = 0,429. The relationship between concentration of liquid smoke (X and mass losses (Y at 350 oC,  400 oC, and 450 oC were Y= 85,12 -3,188X (r2 = 0,723, Y= 88,06 – 3,435X + (r2 = 0,953 and Y= 91,56 – 3,867X  (r2 = 0,886.

  20. Centro Vogelstang - Mannheim (Alemania Federal

    Directory of Open Access Journals (Sweden)

    Striffler, H.

    1972-05-01

    Full Text Available In the new urban zone of Vogelstang some 20,000 people will live in 4,600 rented dwellings and 700 private homes. The scheme contains all facilities to allow an autonomous life, i.e. primary schools, a secondary school, a college of domestic economy, two Catholic and two Evangelical churches, a kindergarten, an old people's home, a commercial centre, a community centre and an indoor swimming-pool. In the southern area a recreation park has been made with an artificial lake and sports centre. There are plenty of green spaces and playing areas for children.En la nueva zona urbana Vogelstang vivirán unas 20.000 personas en 4.600 viviendas de alquiler y 700 hogares propios. El complejo abarca todas las instalaciones que permiten una vida autónoma: Escuelas primarias. Escuela Superior. Instituto. Escuela de economía doméstica. Dos iglesias católicas y dos evangélicas. Jardín de infancia. Residencia para ancianos. Centro comercial. Centro comunal. Piscina cubierta. En la zona sur se ha creado un parque de recreo con un lago artificial y un centro de deportes. Hay abundantes espacios verdes y lugares de juego para los niños.

  1. Traffic-emitted metal status and uptake by Carex meyeriana Kunth and Thelypteris palustris var. pubescens Fernald growing in roadside turfy swamp in the Changbai Mountain area, China.

    Science.gov (United States)

    Wang, Hong; Nie, Lei; Xu, Yan; Li, Miao; Lv, Yan

    2018-04-26

    Six traffic-emitted metals (Cr, Zn, Cu, Cd, Pb, and Ni) were determined in soil and plants for below- and aboveground parts along different distances from highway to evaluate their behavior and uptake by Carex meyeriana Kunth and Thelypteris palustris var. pubescens Fernald growing in turfy swamps. The results indicated that the different plant tissues showed significantly different levels of metal content. Nonlinear regression analysis indicated that metal contents leveled off at constant values before they decreased as the distance from the roadside increased. The high R 2 values of the regression model indicated good fit of the exponential function applied to depict the distribution pattern of the metal elements. It was deduced that Cr, Cu, and Cd in Thelypteris palustris var. pubescens Fernald were mainly derived from the soil; Carex meyeriana Kunth and Thelypteris palustris var. pubescens Fernald absorbed Pb mainly through the stomata from atmospheric depositions; Cr, Cu, and Cd in Carex meyeriana Kunth and Zn in Thelypteris palustris var. pubescens Fernald were mainly affected by soil and atmospheric depositions. After excluding the effects of traffic, only the bioaccumulation factor of Cd (1.34) in Carex meyeriana Kunth and the translocation factor of Zn (1.13) in Thelypteris palustris var. pubescens Fernald were greater than 1, suggesting that Carex meyeriana Kunth could be a good candidate for assimilating Cd from soils and Thelypteris palustris var. pubescens Fernald could be suitable for the phytoextraction of Zn.

  2. LIDERAZGO VISIONARIO: CENTRO DEL CONOCIMIENTO

    Directory of Open Access Journals (Sweden)

    Rafael Pérez Uribe

    2013-07-01

    Full Text Available El gestor del conocimiento es el ser humano. En el mundo como en las empresas es el centro de la destrucción y la creación del conocimiento. Por esta razón en las empresas se deben generar los escenarios adecuados para revertir el conocimiento de las personas y convertirlo en patrimonio de las organizaciones. El papel del líder es vital para la construcción de escenarios adecuados para que los trabajadores se conviertan en auténticos gestores del «knowledge» y esto permita que las organizaciones sean entes permanentes de aprendizaje continuo.

  3. Water extractable phytochemicals from Capsicum pubescens (tree pepper) inhibit lipid peroxidation induced by different pro-oxidant agents in brain

    International Nuclear Information System (INIS)

    Oboh, G.; Rocha, J.B.T.

    2006-03-01

    Reactive oxygen species (ROS) is the cause of neurodegenerative disorders such as Lou Gehrig's disease, Parkinson's disease and Huntington's disease; one practical way to prevent and manage neurodegenerative diseases is through the eating of food rich in antioxidants (dietary means). In this study, the antioxidant and neuroprotective properties of aqueous extract of ripe and unripe Capsicum pubescens (popularly known as tree pepper) on different pro-oxidant induced lipid peroxidation in Rat's brain (in vitro) is been investigated. Aqueous extract of freshly harvested pepper was prepared, and the total phenol content, vitamin C, ferric reducing antioxidant property (FRAP) and Fe (II) chelating ability was determined. In addition, the ability of the extracts to protect the Rat's brain against some pro-oxidant FeSO 4 , Sodium nitroprusside and Quinolinic acid) - induced oxidative stress was also determined. The results of the study revealed that ripe Capsicum pubescens had a significantly higher (P 2 O 2 induced decomposition of deoxyribose. Therefore, ripe and unripe Capsicum pubescens would inhibit lipid peroxidation in vitro. However, the ripe potent was a more potent inhibitor of lipid peroxidation, which is probably due to its higher vitamin C and phenol content, reducing power and Fe (II) chelating ability. (author)

  4. Drought impact on Quercus pubescens Willd. isoprene emissions over the Mediterranean area: what future?

    Science.gov (United States)

    Cyrielle Genard-Zielinski, Anne; Boissard, Christophe; Ormeño, Elena; Lathière, Juliette; Guenet, Bertrand; Gauquelin, Thierry; Fernandez, Catherine

    2015-04-01

    Biogenic Volatile Organic Compounds (BVOCs) released by plants mostly originate from their secondary metabolism. Their emissions are modulated, in terms of intensity and molecule diversity, by environmental conditions. Among BVOCs, isoprene has been especially studied due to its high emission fluxes and its contribution to tropospheric photochemistry, both in the gaseous and particulate phases. However, the way isoprene emissions are impacted by some abiotic factors, especially water stress, is still under debate. In a world facing climatic changes, global climate models expect air temperature and drought intensity to strengthen in the Mediterranean area by 2100. Our work focuses on the impact of water stress on isoprene emissions (ERiso) from Quercus pubescens Willd. This species covers large areas of the Mediterranean area where it appears to be the main isoprene emitter. An in situ experimentation was performed at the O3HP (Oak Observatory at OHP, southern France) in a pubescent oak forest with trees adapted to long lasting stress periods. We investigated during a whole seasonal cycle (from June 2012 to June 2013) the course of ERiso under both natural water stress (control treatment: C) and intensified water stress (stress treatment: S) by artificially reducing rain by 30% using a specific rain exclusion device. Restricted rain did not modify either the net CO2 assimilation or ERiso during the whole season. However, isoprene emission factors (Is) for trees under S were significantly higher (a factor of ˜ 2) than for trees growing under C in August (137.8 compared to 75.3 μgC.gDM-1.h-1 respectively) and September (75.3 compared to 40.2 μgC.gDM-1.h-1 respectively). Based on our experimental emission database, an appropriate isoprene emission algorithm (GZ2014) was developed using a statistic approach (an artificial neural network). Using ambient and edaphic environmental parameters integrated over up to 3 weeks, GZ2014 was found to represent more than 80% of

  5. Variability of BVOC emissions from a Mediterranean mixed forest in southern France with a focus on Quercus pubescens

    Science.gov (United States)

    Genard-Zielinski, A.-C.; Boissard, C.; Fernandez, C.; Kalogridis, C.; Lathière, J.; Gros, V.; Bonnaire, N.; Ormeño, E.

    2015-01-01

    We aimed at quantifying biogenic volatile organic compound (BVOC) emissions in June from three Mediterranean species located at the O3HP site (southern France): Quercus pubescens, Acer monspessulanum and C. coggygria (for isoprene only). As Q. pubescens was shown to be the main BVOC emitter with isoprene representing ≈ 99% of the carbon emitted as BVOC, we mainly focused on this species. C. coggygria was found to be a non-isoprene emitter (no other BVOCs were investigated). To fully understand both the canopy effect on Q. pubescens isoprene emissions and the inter-individual variability (tree to tree and within canopy), diurnal variations of isoprene were investigated from nine branches (seven branches located to the top of canopy at ≈ 4 m above ground level (a.g.l.), and two inside the canopy at ≈ 2 m a.g.l.). The Q. pubescens daily mean isoprene emission rate (ERd) fluctuated between 23 and 98 μgC gDM-1 h-1. Q. pubescens daily mean net assimilation (Pn) ranged between 5.4 and 13.8, and 2.8 and 6.4 μmol CO2 m-2 s-1 for sunlit and shaded branches respectively. Both ERd and isoprene emission factors (Is), assessed according to Guenther et al. (1993) algorithm, varied by a factor of 4.3 among the sunlit branches. While sunlit branches ERd was clearly higher than for shaded branches, there was a non-significant variability of Is (59 to 77 μgC gDM-1 h-1). Diurnal variations of isoprene emission rates (ERs) for sunlit branches were also investigated. ERs were detected at dawn 2 h after Pn became positive and were mostly exponentially dependent on Pn. Diurnal variations of ERs were not equally well described throughout the day by temperature (CT) and light (CL) parameters according to G93 algorithm. Temperature had more impact than photosynthetically active radiation (PAR) on the morning emissions increase, and ER was no longer correlated to CL × CT between solar noon (maximum ER) and mid-afternoon, possibly due to thermal stress of the plant. A comparison

  6. Contrasting short-term performance of mountain birch (Betula pubescens ssp. czerepanovii treeline along a latitudinal continentality-maritimity gradient in the southern Swedish Scandes

    Directory of Open Access Journals (Sweden)

    Lisa Öberg

    2012-01-01

    Full Text Available Positional treeline shift is a fundamental aspect and indicator of high-mountain vegetation response to climate change. This study analyses treeline performance during the period 2005/2007 -2010/2011 in the Swedish Scandes. Focus is on mountain birch (Betula pubescens ssp. czerepanovii along a regional climatic maritimity-continentality gradient. Treeline upshift by 3.0 yr-1 in the maritime part differed significantly from retreat by 0.4 m yr-1 in the continental part of the transect. This discrepancy is discussed in terms of differential warming-induced snow cover phenology patterns and their influence on soil moisture conditions. In the continental area, earlier and more complete melting of prior relatively rare late-lying snow patches, even high above the treeline, has progressed to a state when melt water irrigation ceases. As a consequence, soil drought sets back the vigor of existing birches and precludes sexual regeneration and upslope advance of the treeline. In the maritime area, extensive and deep snow packs still exist above the treeline and constrain its position, although some release is taking place in the current warm climate. Thereby, the birch treeline expands upslope as the alpine snow patches shrink, but continue to provide sufficient melt water throughout the summer. Treeline rise appears to have been based primarily on seed regeneration over the past few decades. This is a novelty, since prior (1915-2007 treeline advance was accomplished mainly by in situ shifts in growth form of relict krummholz birches, in some cases millennial-old, prevailing above the treeline. By the snow phenology mechanism, birch can benefit from climate warming in the maritime region, which contrasts with the situation in the continental region. This discrepancy should be accounted for in projective models. In a hypothetical case of sustained warming, the subalpine birch forest belt may expand less extensively than often assumed, although advance may

  7. Effect of postharvest temperature on the shelf life of gabiroba fruit (Campomanesia pubescens

    Directory of Open Access Journals (Sweden)

    Edson Pablo da Silva

    2013-12-01

    Full Text Available The objective of this study was to determine the optimal temperature for storing gabiroba fruit (Campomanesia pubescens without affecting compounds' quality. The fruits were stored at different temperatures (0 ºC, 6 ºC, 12 ºC, and 20 ºC and the effect on the pH, total titratable acidity, soluble solids, total sugars, vitamin C, and antioxidant components such as tannins and total phenolic compounds was evaluated. It was observed an increase in the pH and total titratable acidity during storage at all the temperatures tested. Gabiroba fruits were stored for 9 and 3 days at 12 ºC and 20 ºC, respectively, and under both temperatures they showed a reduction in tannins and an increase in vitamin C content. As gabirobas armazenadas a 0º and 6 ºC alcançaram maior tempo de armazenamento After 12 days of storage, the fruits stored at 6 ºC contained higher amounts of water soluble solids, sugars, and antioxidants. In general, for long term storage, it is suggested to store gabiroba fruits at 6 ºC. On the other hand, for short term storage, the temperature of 12 ºC would be the better to keep high levels of vitamin C and phenolic compounds.

  8. Improved Laccase Production by Trametes pubescens MB89 in Distillery Wastewaters

    Directory of Open Access Journals (Sweden)

    P. J. Strong

    2011-01-01

    Full Text Available Various culture parameters were optimised for laccase synthesis by Trametes pubescens MB89, including pH, carbon source, nitrogen source, lignocellulosic supplements, and reported inducers. Glucose, in conjunction with a complex nitrogen source at pH 5.0, resulted in the highest laccase yield. Adding ethanol, copper, or 2,5-xylidine prior to inoculation further improved laccase concentrations. The addition of 2,5-xylidine was further investigated with multiple additions applied at varying times. This novel application substantially improved laccase production when applied regularly from inoculation and during the growth phase, and also countered glucose repression of laccase synthesis. Single and multiple factor changes were studied in three distillery wastewaters and a wine lees. A synergistic increase in laccase synthesis was observed with the addition of glucose, copper, and 2,5-xylidine. Single addition of 2,5-xylidine proved most beneficial with distillery wastewaters, while copper addition was most beneficial when using the wine lees as a culture medium.

  9. Two new triterpene saponins from the anti-inflammatory saponin fraction of Ilex pubescens root.

    Science.gov (United States)

    Wang, Jing-Rong; Zhou, Hua; Jiang, Zhi-Hong; Liu, Liang

    2008-07-01

    The saponin fraction from the ethanolic extracts of the root of Ilex pubescens Hook. et Arn. (Ilexaceae) was found to exhibit potent anti-inflammatory effects on carrageenan-induced paw edema in rats. Two novel triterpene saponins, pubescenosides C and D (1 and 2, resp.), together with five known saponins were isolated from this saponin fraction. The structures of 1 and 2 were elucidated as (20beta)-3-O-[beta-D-glucopyranosyl-(1-->2)-beta-D-xylopyranosyl]ursa-12,18-dien-28-oic acid 28-O-beta-D-glucopyranosyl ester, and (20beta)-3-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl-(1-->2)-beta-D-xylopyranosyl]ursa- 12,18-dien-28-oic acid 28-O-beta-D-glucopyranosyl ester, respectively, on the basis of chemical and spectroscopic data. Five known saponins isolated from the saponin fraction were identified as ilexsaponin B(1), B(2), B(3), A(1), and chikusetsusaponin IV(a).

  10. Alkali extraction and physicochemical characterization of hemicelluloses from young bamboo (Phyllostachys pubescens Mazel

    Directory of Open Access Journals (Sweden)

    Qiang Luo

    2012-11-01

    Full Text Available Two hemicellulose fractions were obtained by extraction of one-month- old young bamboo (Phyllostachys pubescens Mazel. The fractionation procedure employed 2% NaOH as extractant, followed by filtration, acidification, precipitation, and washing with 70% ethanol solution. The total yield was 26.2%, based on the pentosan content in bamboo. The physicochemical properties were determined and sugar composition analysis showed that the hemicelluloses consisted mainly of xylose, arabinose, galactose, and a small amount of uronic acid. Furthermore, based on FT-IR and NMR spectra analyses, the structure of hemicelluloses was determined to be mainly arabinoxylans linked via (1→4-β-glycosidic bonds with branches of arabinose and 4-O-methyl-D-glucuronic acid. The molecular weights were 6387 Da and 4076 Da, corresponding to the hemicelluloses HA and HB. Finally, the thermal stability was elucidated using the TG-DTG method. The obtained results can provide important information for understanding young bamboo and the hemicelluloses in it.

  11. Evaluation of antioxidative and antidiabetic activity of bark of holarrhena pubescens wall.

    Science.gov (United States)

    Bhusal, Anup; Jamarkattel, Nirmala; Shrestha, Aasmin; Lamsal, Nisha Kiran; Shakya, Sangam; Rajbhandari, Sneha

    2014-09-01

    The objectives of the study are to screen out various phytochemicals and to evaluate the antioxidant and antidiabetic potential of the stem bark of Holarrhena pubescens Wall (Holarrhena antidysenterica). The antioxidant activity was determined by the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity where ascorbic acid was taken as positive control. The antioxidant property was later exploited and the methanolic extract of plant was tested for antihyperglycemic activity in glucose overloaded hyperglycemic mice. The extract was tested for its hypoglycemic activity at two-dose levels, 250 and 500 mg/kg respectively where Glipizide 5 mg/kg was taken as standard reference drug. All results are presented as mean ± SD (Standard Deviation). Significant differences between experimental groups were determined by Student's t-test. The methanolic and water extract showed strong antioxidant activity with inhibition of more than 90% DPPH free radicals at the concentration of 100μg/mL. The hypoglycemic activity of methanolic extract on glucose tolerance test were significant (p flavonoides, phenolic compounds suggested that they may be partially responsible for antioxidant and antidiabetic activity.

  12. Biological Activities and Phytochemical Profiles of Extracts from Different Parts of Bamboo (Phyllostachys pubescens

    Directory of Open Access Journals (Sweden)

    Akinobu Tanaka

    2014-06-01

    Full Text Available Besides being a useful building material, bamboo also is a potential source of bioactive substances. Although some studies have been performed to examine its use in terms of the biological activity, only certain parts of bamboo, especially the leaves or shoots, have been studied. Comprehensive and comparative studies among different parts of bamboo would contribute to a better understanding and application of this knowledge. In this study, the biological activities of ethanol and water extracts from the leaves, branches, outer culm, inner culm, knots, rhizomes and roots of Phyllostachys pubescens, the major species of bamboo in Japan, were comparatively evaluated. The phytochemical profiles of these extracts were tentatively determined by liquid chromatography-mass spectrometry (LC-MS analysis. The results showed that extracts from different parts of bamboo had different chemical compositions and different antioxidative, antibacterial and antiallergic activities, as well as on on melanin biosynthesis. Outer culm and inner culm were found to be the most important sources of active compounds. 8-C-Glucosylapigenin, luteolin derivatives and chlorogenic acid were the most probable compounds responsible for the anti-allergy activity of these bamboo extracts. Our study suggests the potential use of bamboo as a functional ingredient in cosmetics or other health-related products.

  13. Furano diterpenes from Pterodon pubescens Benth with selective in vitro anticancer activity for prostate cell line

    International Nuclear Information System (INIS)

    Spindola, Humberto M.; Carvalho, Joao E. de; Ruiz, Ana Lucia T.G.; Rodrigues, Rodney A. F.; Denny, Carina; Sousa, Ilza M. de Oliveira; Foglio, Mary Ann; Tamashiro, Jorge Y.

    2009-01-01

    Activity guided fractionation of Pterodon pubescens Benth. methylene chloride-soluble fraction afforded novel 6α-acetoxi 7β-hydroxy-vouacapan 1 and four known diterpene furans 2, 3, 4, 5. The compounds were evaluated for in vitro cytotoxic activities against human normal cells and tumour cell lines UACC-62 (melanoma), MCF-7 (breast), NCI-H460 (lung, non-small cells), OVCAR-03 (ovarian), PC-3 (prostate), HT-29 (colon), 786-0 (renal), K562 (leukemia) and NCI-ADR/RES (ovarian expressing phenotype multiple drugs resistance). Results were expressed by three concentration dependent parameters GI 50 (concentration that produces 50% growth inhibition), TGI (concentration that produces total growth inhibition or cytostatic effect) and LC 50 (concentration that produces .50% growth, a cytotoxicity parameter). Also, in vitro cytotoxicity was evaluated against 3T3 cell line (mouse embryonic fibroblasts). Antiproliferative properties of compounds 1, 4 and 5 are herein reported for the first time. These compounds showed selectivity in a concentration-dependent way against human PC-3. Compound 1 demonstrated selectivity 26 fold more potent than the positive control, doxorubicin, for PC-3 (prostrate) cell line based on GI 50 values, causing cytostatic effect (TGI value) at a concentration fifteen times less than positive control. Moreover comparison of 50% lethal concentration (LC 50 value) with positive control (doxorubicin) suggested that compound 1 was less toxic. (author)

  14. Indigenous and inoculated yeast fermentation of gabiroba (Campomanesia pubescens) pulp for fruit wine production.

    Science.gov (United States)

    Duarte, Whasley Ferreira; Dias, Disney Ribeiro; de Melo Pereira, Gilberto Vinicius; Gervásio, Ivani Maria; Schwan, Rosane Freitas

    2009-04-01

    The objectives of this study were to evaluate the potential of gabiroba Campomanesia pubescens (DC) O. Berg in the production of a beverage fermented using selected and wild yeasts from indigenous fermentation, analyze the volatile compounds profile present during the process of fermentation, and evaluate the sensory quality of the final beverage produced. Throughout the process of fermentation, when Saccharomyces cerevisiae UFLA CA 1162 was inoculated, there were stable viable populations around 9 log cells ml(-1). During indigenous fermentation, yeast population increased from 3.7 log CFU ml(-1) to 8.1 log CFU ml(-1) after 14 days. The diversity and dynamics of the yeast population during indigenous fermentation observed by PFGE analysis showed five different karyotyping profiles in the first days of fermentation. After the seventh day, there was a higher frequency of a similar S. cerevisiae profile. The yeast non-Saccharomyces were identified by sequencing of the ITS region as Candida quercitrusa and Issatchenkia terricola. Inoculated fermentations yielded a higher amount of alcohol than indigenous ones, indicating the efficiency of selected strains. There was also a greater concentration of higher alcohols, which are usually responsible for the flavor found in alcoholic beverages. Based on the characteristics of the pulp and acceptance in the sensory analysis, gabiroba fruits showed good potential for use in the production of fermented beverage.

  15. Stable isotope investigations from tree rings (Betula pubescens) in Northern Iceland

    International Nuclear Information System (INIS)

    Bertler, N.A.N.; Rose, J.J.; Mattey, D.P.; Brownlees, M.; Stoetter, J.E.

    1999-01-01

    Stable isotope investigations from recent trees (Betual pubescens) from two different locations in Northern Iceland have been carried out to examine applicability for paleoclimatic research. The aim was to correlate oxygen and carbon isotope data of annual and three year resolution derived from individual rings with meteorological data, in order to establish a calibration function for fossil wood samples. A precise dendrochronological record has been established for all cores to permit a direct comparison between different data sets. The material used for the isotopic analysis is pure α-cellulose. The oxygen and carbon ratios were measured using a new technique, employing CO with continuous flow mass spectrometry. As this method does not allow a simultaneous measurements of the carbon ratios, the δ 13 C values have been analysed separately, using CO 2 . Both methods demonstrated their reliability through high precision and accuracy in the values for the measured standards. However there is little confidence in the sample data, as they suffer from poor precision and non-consistency

  16. Preparation and characterization of microcapsules of Pterodon pubescens Benth. by using natural polymers

    Directory of Open Access Journals (Sweden)

    Alexandre Espada Reinas

    2014-12-01

    Full Text Available An oleaginous fraction obtained from an alcohol extract of the fruit of Pterodon pubescensBenth. (FHPp was microencapsulated in polymeric systems. These systems were developed using a complex coacervation method and consisted of alginate/medium-molecular-weight chitosan (F1-MC, alginate/chitosan with greater than 75% deacetylation (F2-MC, and alginate/low-molecular-weight chitosan (F3-MC. These developed systems have the potential to both mask the taste of the extract, and to protect its constituents against possible chemical degradation. The influence of the formulation parameters and process were determined by chemical profiling and measurement of the microencapsulation efficiency of the oleaginous fraction, and by assessment of microcapsule morphology. The obtained formulations were slightly yellow, odorless, and had a pleasant taste. The average diameters of the microcapsules were 0.4679 µm (F2-MC, 0.5885 µm (F3-MC, and 0.9033 µm (F1-MC. The best formulation was F3-MC, with FHPp microencapsulation efficiency of 61.01 ± 2.00% and an in vitro release profile of 75.88 ± 0.45%; the content of vouacapans 3-4 was 99.49 ± 2.80%. The best model to describe the release kinetics for F1-MC and F3-MC was that proposed by Higuchi; however, F2-MC release displayed first-order kinetics; the release mechanism was of the supercase II type for all formulations.

  17. Sweat control in male by the use of alunogen and cypripedium pubescens

    Directory of Open Access Journals (Sweden)

    Lorenzo Martini

    2015-01-01

    Full Text Available Aim of my study is to investigate upon the quality and quantity of the free fatty acids secreted by apocrine glands, as chief index to determine the real efficacy of a new model of antiperspirant-deodorant, that interferes directly with apocrine glands (by reducing drastically the secretion of free fatty acids and indirectly with eccrine glands, by minimising the salted water secretion. I created an innovative cosmetic formula that comprises the Alunogen, idest the heptadecahydrated form of aluminium sulphate, since the generic aluminium sulphate has been recently accused of the onset of the Alzheimer’s disease, when penetrating the epidermis, although definitive scientific proof is difficult to establish due to the lack of longitudinal studies, and therefore could be banished in the very next future. The formula comprises also the concrète of Cypripedium Pubescens (Lady’s slipper which contains, inter alia, the cypripedin, a quinine-analog, endowed by anticholinergic activities, that can be reputed useful as astringent agent with regards to eccrine glands, synergically to the action upon apocrine glands performed by alunogen. I recruited 11 young men, 11 bricklayers that customarily have to work 9 hours pro day after the hot summer sun and assert without doubt to sweat copiously, in order to carry out my experience.

  18. (Heckel) seeds

    African Journals Online (AJOL)

    UTILISATEUR

    Garcinia kola seeds to six different hormonal pre-germination treatments. This consisted of ... Thus, seed dormancy in this case is not a coat- imposed .... development of the cultivation of the species. The cause .... Hormonal regulation of seed ...

  19. Lima: poder, centro y centralidad: Del centro nativo al centro neoliberal

    Directory of Open Access Journals (Sweden)

    Wiley Ludeña

    2002-05-01

    Full Text Available El centro y la idea de centro es una forma de construcción histórica práctica e ideológica que se origina y se reproduce como expresión de las demandas de reproducción social, económica, política, cultural y simbólica de determinados sectores en su experiencia de producir ciudad. El artículo ofrece un panorama general sobre la evolución y las transformaciones del área central de Lima desde su existencia pre inca e inca, hasta su posterior constitución colonial y republicana. Concluye con un registro de la situación actual. El área central es analizada tanto en su condición de realidad específica, como en relación al conjunto de la ciudad y la sociedad. Los problemas son evaluados desde la perspectiva de su significado económico, político, social, cultural, antropológico, arquitectónico y urbanísticoThe centre and the idea of centre is a way of practical and ideological construction, that origins and reproduces as an expression of the requests of social, economical, political, cultural and symbolic reproduction of determinate sectors in its experience of producing city. The article offers an overview about the evolution and the transformations of Lima’s central area, since its pre inca and inca existence, to its later colonial and republican constitution. Ends with a register of the actual situation. The central area is analyzed as in its condition of an specific reality, as its relation with the whole city and the society. The problems are evaluated from the perspective of the economic, political, social, cultural, anthropologic, architectonic and urbanistic meaning

  20. Critical electrolyte concentration of chromatin in polytene chromosomes of Trichosia pubescens (Diptera, Sciaridae

    Directory of Open Access Journals (Sweden)

    Ana Lúcia P. Monteiro

    1998-06-01

    Full Text Available The binding of toluidine blue molecules to nucleic acid phosphates under conditions of competition with Mg2+ ions was studied in Trichosia pubescens polytene chromosome regions differing in composition and organization (RNA-rich areas and puffs, DNA puffs, heterochromatin. The aim was to find variability in the Mg2+ concentration at which metachromasy was completely prevented (= critical electrolyte concentration; CEC and that could reflect differences at the level of nucleoprotein complexes in particular chromosome regions and developmental phases. Although high CEC values have been found in tightly packed chromatin such as that of heterochromatin zones, the CEC values for the other regions have proven to be affected not only by availability and proximity of DNA phosphates but also by RNA richness and other factors. Among these, changes in DNA geometry and packing state have been assumed for explaining increased values after RNA removal in DNA puffs and RNA-rich zones. Based on CEC values it has been suggested that alterations at the level of nucleoprotein complexes may occur in puffs before they are morphologically detectable. CEC results for polytene chromosomes were thus revealed to vary considerably with slight variations in nucleoprotein composition and organization. However, since a complex and apparently contradictory rationale has to be used for explaining part of the results, CEC is not recommended as a useful tool for extensive and comparative studies of this particular model.A ligação de moléculas de azul de toluidina a grupamentos fosfatos de ácido nucléico em condições de competição com íons Mg2+ foi estudada em regiões de cromossomos politênicos de Trichosia pubescens que diferem em composição e organização (áreas ricas em RNA, pufes de RNA e DNA, heterocromatina. O objetivo foi encontrar variabilidade na concentração de Mg2+ na qual a metacromasia fosse completamente abolida (= concentração crítica de eletr

  1. Ecophysiological characteristics and cadmium accumulation in Downy Oak (Quercus pubescens Willd.

    Directory of Open Access Journals (Sweden)

    Cocozza C

    2012-10-01

    Full Text Available Heavy metals provoke environmental pollution with potentially toxic effects on human and plants systems. Recently, investigations are conducted on plants that may play a relevant role on pollutants absorption or stabilization, focusing on fast growing tree species in agronomic conditions; little is known on the effects of contaminants on tree species colonizing abandoned fields to be used in restoration ecology. The effects of Cd on photosynthetic performance and metal accumulation were investigated in Quercus pubescens Willd. seedlings grown in pots containing a mixture of sand, clay, turf and Cd-treatments (0, 25 and 75 mg kg-1 dry soil. The studied photosynthetic parameters (Asat= net phytosynthesis; Rday= day respiration; Γcomp= CO2 compensation point; Vcmax= maximum carboxylation rate; Jmax = electron transport rate; TPU = triose phosphate use; Ci/Ca = ratio of intercellular (Ci to ambient (Ca [CO2] (Ci/Ca; Jmax/Vcmax = ratio; (gsmax = maximum stomatal conductance; (lg = stomatal conductance estimated relative to the photosynthetic rate; (Fv/Fm = maximum quantum yield of PSII photochemistry; (ΔF/F’m = effective photochemical efficiency varied progressively with increasing Cd concentration in the soil, highlighting a negative impact on photosynthetic potential and PSII functioning. Approximately 10% of added Cd was found to be extractable from the substrate, at the maximum concentration applied, with about 12 and 0.75 as bioaccumulation and translocation factors, respectively. Analogously, Cd accumulated up to 34, 30 and 46 mg kg−1 in leaves, stem and roots, respectively. While it is not possible to extrapolate from the present study with seedlings to effects on mature pine trees, there are clear implications for regeneration in soils contaminated with heavy metals, which may lead to ecosystem deterioration.

  2. Potential of two submontane broadleaved species (Acer opalus, Quercus pubescens) to reveal spatiotemporal patterns of rockfall activity

    Science.gov (United States)

    Favillier, Adrien; Lopez-Saez, Jérôme; Corona, Christophe; Trappmann, Daniel; Toe, David; Stoffel, Markus; Rovéra, Georges; Berger, Frédéric

    2015-10-01

    Long-term records of rockfalls have proven to be scarce and typically incomplete, especially in increasingly urbanized areas where inventories are largely absent and the risk associated with rockfall events rises proportionally with urbanization. On forested slopes, tree-ring analyses may help to fill this gap, as they have been demonstrated to provide annually-resolved data on past rockfall activity over long periods. Yet, the reconstruction of rockfall chronologies has been hampered in the past by the paucity of studies that include broadleaved tree species, which are, in fact, quite common in various rockfall-prone environments. In this study, we test the sensitivity of two common, yet unstudied, broadleaved species - Quercus pubescens Willd. (Qp) and Acer opalus Mill. (Ao) - to record rockfall impacts. The approach is based on a systematic mapping of trees and the counting of visible scars on the stem surface of both species. Data are presented from a site in the Vercors massif (French Alps) where rocks are frequently detached from Valanginian limestone and marl cliffs. We compare recurrence interval maps obtained from both species and from two different sets of tree structures (i.e., single trees vs. coppice stands) based on Cohen's k coefficient and the mean absolute error. A total of 1230 scars were observed on the stem surface of 847 A. opalus and Q. pubescens trees. Both methods yield comparable results on the spatial distribution of relative rockfall activity with similar downslope decreasing recurrence intervals. Yet recurrence intervals vary significantly according to tree species and tree structure. The recurrence interval observed on the stem surface of Q. pubescens exceeds that of A. opalus by > 20 years in the lower part of the studied plot. Similarly, the recurrence interval map derived from A. opalus coppice stands, dominant at the stand scale, does not exhibit a clear spatial pattern. Differences between species may be explained by the bark

  3. Growth response of downy birch (Betula pubescens) to moisture treatment at an cut-over peat bog in the Šumava Mts., Czech Republic

    Czech Academy of Sciences Publication Activity Database

    Lanta, Vojtěch; Hazuková, I.

    2005-01-01

    Roč. 42, - (2005), s. 247-256 ISSN 0003-3847 R&D Projects: GA ČR GD206/03/H034 Institutional research plan: CEZ:AV0Z6005908 Keywords : Betula pubescens * cut-over peatland * increment Subject RIV: EF - Botanics Impact factor: 0.315, year: 2005

  4. POTENSI BIJI DAN EKSTRAK BIJI TERATAI (Nymphaea pubescens Willd SEBAGAI PENCEGAH DIARE PADA TIKUS PERCOBAAN YANG DIINTERVENSI E.coli ENTEROPATOGENIK

    Directory of Open Access Journals (Sweden)

    Yuspihana Fitrial

    2013-03-01

    Full Text Available The Potency of Waterlily’s Seed (Nymphaea pubescens Willd and Its Extract as DiarrheaPreventative in Rats that Intervented with Enterophatogenic Escherichia coli Yuspihana Fitrial, Made Astawan, Soewarno T.Soekarto,Komang G.Wiryawan, Tutik Wresdiyati ABSTRAK Penelitian ini bertujuan untuk mengetahui komponen Þ tokimia yang terdapat pada biji teratai dan ekstrak etil asetat bijiteratai dan mengetahui aktivitas antibakterinya terhadap E.coli penyebab diare (E.coli Enteropatogenik K1.1, EPECK1.1 pada tikus percobaan. Perlakuan diberikan pada tikus jantan jenis Sprague Dawley (berat 140 ±5 g selama28 hari. Tikus percobaan dibagi menjadi 4 grup yaitu, grup 1, kontrol (mendapatkan ransum standar, grup 2 yangmendapat ransum yang disubstitusi tepung biji teratai (18,7 g/100 g, grup 3 yang mendapat ransum yang disubstitusiFOS (fruktooligosakarida, 6 g/100 g, dan grup 4 yang mendapat ransum standar dan ekstrak etil asetat biji teratai(17,8 mg/ml. Setelah 2 minggu perlakuan ransum, tikus percobaan diintervensi secara oral dengan 0,3 ml dari 106CFU/ml EPEC K1.1 selama 1 minggu sehingga diare. Aktivitas biologis ransum perlakuan diamati dengan mengamatibobot badan, konsumsi ransum per hari, eÞ siensi ransum, total mikroba, total E.coli dan total bakteri asam laktatdari isi sekum tikus percobaan. Hasil penelitian menunjukkan bahwa biji teratai mengandung alkaloid, ß avonoid,steroid, glikosida, tanin, saponin, dan triterpenoid, sedangkan ekstrak etil asetat biji teratai mengandung alkaloid,ß avonoid, tanin, glikosida, saponin dan triterpenoid. Substitusi biji teratai pada ransum mampu menurunkan totalE.coli isi sekum, baik setelah intervensi maupun setelah intervensi EPEC dihentikan. Sementara pemberian ekstrakbiji teratai mampu menurunkan total E.coli isi sekum setelah intervensi dihentikan. EÞ siensi ransum pada grup yangdisubstitusi biji teratai lebih tinggi dibandingkan kontrol dan ekstrak biji teratai (P<0.05. Perlakuan substitusi bijiteratai, dan

  5. Water extractable phytochemicals from Capsicum pubescens (tree pepper) inhibit lipid peroxidation induced by different pro-oxidant agents in brain

    Energy Technology Data Exchange (ETDEWEB)

    Oboh, G [Biochemistry Department, Federal University of Technology, Akure, Ondo State (Nigeria); [Departamento de Quimica, Universidade Federal de Santa Maria (UFSM), Campus Universitario - Camobi, Santa Maria RS (Brazil); [Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)]. E-mail: goboh2001@yahoo.com; Rocha, J B.T. [Campus Universitario - Camobi, Santa Maria RS (Brazil)

    2006-03-15

    Reactive oxygen species (ROS) is the cause of neurodegenerative disorders such as Lou Gehrig's disease, Parkinson's disease and Huntington's disease; one practical way to prevent and manage neurodegenerative diseases is through the eating of food rich in antioxidants (dietary means). In this study, the antioxidant and neuroprotective properties of aqueous extract of ripe and unripe Capsicum pubescens (popularly known as tree pepper) on different pro-oxidant induced lipid peroxidation in Rat's brain (in vitro) is been investigated. Aqueous extract of freshly harvested pepper was prepared, and the total phenol content, vitamin C, ferric reducing antioxidant property (FRAP) and Fe (II) chelating ability was determined. In addition, the ability of the extracts to protect the Rat's brain against some pro-oxidant FeSO{sub 4}, Sodium nitroprusside and Quinolinic acid - induced oxidative stress was also determined. The results of the study revealed that ripe Capsicum pubescens had a significantly higher (P<0.05) total phenol [ripe (113.7mg/100g), unripe (70.5mg/100g)] content and ferric reducing antioxidant property than the unripe pepper. However, there was no significant difference in the vitamin C [ripe (231.5{mu}g/g), unripe (224.4{mu}g/g)] content and Fe (II) chelating ability. Furthermore, the pepper extracts caused a significant decrease (P<0.05) in 25{mu}M Fe(II), 7{mu}M Sodium Nitroprusside and 1mM Quinolinic acid induced lipid peroxidation in the Rat's brain in a dose-dependent manner. However, the ripe pepper inhibited MDA (Malondialdehyhide) production in the Rat's brain than the unripe pepper. Conversely, both extract did not significantly inhibit Fe (II)/H{sub 2}O{sub 2} induced decomposition of deoxyribose. Therefore, ripe and unripe Capsicum pubescens would inhibit lipid peroxidation in vitro. However, the ripe potent was a more potent inhibitor of lipid peroxidation, which is probably due to its higher vitamin C and phenol content, reducing power and Fe

  6. El centro del mundo para los gallegos

    OpenAIRE

    Mandianes Castro, Manuel

    1982-01-01

    Estudio sobre la noción de espacio en Galicia. Se pretende demostrar que para los gallegos el universo tiene un centro, con diferentes niveles de aprehensión, alrededor del cual se organiza la comunidad. Para este trabajo se han realizado encuestas entre los habitantes de la región de la Limia (Orense) y los de Loureses. El trabajo se divide en tres apartados atendiendo a los distintos niveles de percepción del centro del mundo: "lareira" (hogar), "encrucillada" (encrucijada) y cementerio.

  7. Growth response of seedlings of six Betula pubescens Ehrh. provenances to six ozone exposure regimes

    Energy Technology Data Exchange (ETDEWEB)

    Mortensen, L.M. [Agricultural Univ. of Norway, Aas (Norway). Dept. of Horticulture and Crop Science

    1998-07-01

    Seedlings of six provenances of Betula pubescens Ehrh. from different latitudes (59-70 deg N) were grown under six ozone exposure regimes by combining different concentrations and daily exposure periods. The different treatments at increasing O{sub 3} exposure over 40 nmol/mol (AOT40 given in parentheses) were: 19 nmol mol{sup -1}/24 h day{sup -1} (0.1 {mu}mol/mol-h), 42 nmol mol{sup -1}/12 h day{sup -1} (2.5 {mu}mol/mol-h), 44 nmol mol{sup -1}/24 h day{sup -1} (7.1 {mu}mol/mol-h), 76 nmol mol{sup -1}/6 day{sup -1} (9.4 {mu}mol/mol-h), 75 nmol mol{sup -1}/12 h day{sup -1} (17.8 {mu}mol/mol{sup -1}) and 116 nmol mol{sup -1}/6 h day{sup -1} (19.8 {mu}mol/mol{sup -1}) for 40 days at a 24 h day{sup -1} photoperiod in growth chambers placed in a greenhouse. The effect of increasing the O{sub 3} exposure from 19 nmol mol{sup -1}/24 h to 42 nmol mol{sup -1}/12 h was a decrease in root but not shoot dry weight. A further increase in the exposure to 44 nmol mol{sup -1}/24 h also decreased the shoot dry weight. An increase in the O{sub 3} concentration to 75 and 116 nmol mol{sup -1} further decreased shoot and root dry weights. A moderate O{sub 3} exposure (42 nmol mol{sup -1}/12 h) increased the plant height and leaf size, while a further increase in O{sub 3} concentration and exposure time decreased both of these variables. The birch provenances generally had a similar response to the O{sub 3} treatments. The accumulated O{sub 3} exposure over the 0, 10, 20, 30, 40 and 50 nmol mol{sup -1} concentrations (AOT0, AOT10, AOT20, AOT30, AOT40 and AOT50, respectively) was calculated for all O{sub 3} treatments. The shoot and root dry weights were correlated best with AOT40 and AOT30, and were estimated to decrease by 10% at an AOT40 of 7.0 and 5.5 {mu}mol mol{sup -1}-h, respectively. The development of O{sub 3} injury (yellow stipples/chlorosis) was most marked when correlated with AOT40 26 refs, 6 figs, 1 tab

  8. Comportamento fisiológico de sementes osmocondicionadas de Platymiscium pubescens Micheli (tamboril-da-mata

    Directory of Open Access Journals (Sweden)

    Borges Eduardo Euclydes de Lima e

    2002-01-01

    Full Text Available O objetivo deste trabalho foi investigar alterações fisiológicas e bioquímicas em sementes osmocondicionadas de tamboril-da-mata (Platymiscium pubescens Micheli. Foram analisados o crescimento do eixo embrionário, a germinação, as alterações na parede celular, a mobilização de carboidratos e proteínas e a atividade de a-galactosidase. Observou-se que o teor de umidade das sementes da testemunha aumentou continuamente até 96 horas de embebição, enquanto as mantidas nas soluções de PEG estabilizaram-se a partir de 48 horas. A germinação ocorreu somente nas sementes mantidas em água, alcançando 30% em 120 horas. As sementes mantidas em solução-0,4 MPa de PEG por 120 horas tiveram 66% de germinação quando transferidas para água, sendo a maior em relação aos demais potenciais. A massa fresca e o comprimento do embrião aumentaram significativamente durante o período de 120 horas em solução de PEG (-0,4 MPa/120 horas, porém a massa seca teve incremento não-significativo. Os teores de arabinose e xilose em membranas lavadas com água decresceram significativamente durante o osmocondicionamento. A galactose não foi detectada na membrana em 120 horas. A arabinose mostrou ser a principal constituinte da membrana. A atividade de a-galactosidase mostrou diferença significativa durante o período de 120 horas. Os teores de ramnose, arabinose e xilose alteraram-se significativamente na fração péctica, enquanto a ramnose foi a única na fração hemicelulósica. A glicose foi detectada somente nessa última fração. Os teores de glicose no embrião e cotilédones alteraram-se significativamente durante o osmocondicionamento. Os teores de estaquiose e de rafinose não tiveram alterações significativas nos cotilédones, enquanto o de sacarose reduziu-se significativamente, mantendo-se mais alto do que os dos outros dois oligossacarídeos. O teor de proteína decresceu significativamente nas 120 horas de

  9. Seed quality in informal seed systems

    NARCIS (Netherlands)

    Biemond, P.C.

    2013-01-01

    Keywords: informal seed systems, seed recycling, seed quality, germination, seed pathology, seed health, seed-borne diseases, mycotoxigenic fungi, Fusarium verticillioides, mycotoxins, Vigna unguiculata, Zea mays, Nigeria.

    Seed is a crucial input for agricultural production.

  10. Biometria de frutos e sementes e emergência de plântulas de duas espécies frutíferas do gênero Campomanesia Biometrics of fruits and seeds and seedling emergence of two species fruit of the Campomanesia genus

    Directory of Open Access Journals (Sweden)

    Michele Camargo de Oliveira

    2011-06-01

    Full Text Available As espécies Campomanesia adamantium e Campomanesia pubescens são morfologicamente semelhantes, ocorrem em ambientes comuns do Bioma Cerrado, por isso são difíceis de serem separadas e identificadas. Os objetivos foram analisar dados biométricos de frutos e sementes de C. adamantium e de C. pubescens, além do processo de emergência das plântulas, para fins de comparações entre as espécies. Em novembro de 2007, de 50 frutos de cada espécie, foram realizadas medidas do comprimento transversal (mm e longitudinal (mm dos frutos e das sementes, massa da matéria fresca dos frutos (g, número de lóculos por fruto e número de lóculos com sementes. Para o teste de emergência, dois experimentos independentes, um para cada espécie, foram instalados em delineamento inteiramente casualizado, com seis métodos de beneficiamento dos frutos para remoção, secagem ou lavagem da mucilagem e quatro repetições com 40 sementes por parcela. Com frutos mais volumosos, com maior acúmulo de massa fresca e maior amplitude biométrica em relação aos de C. pubescens, C. adamantium apresenta potencial para seleção de materiais promissores para fins de melhoramento. A secagem à sombra por 24 horas das sementes com mucilagem reduz os percentuais de emergência e de plântulas normais, além da velocidade de emergência de plântulas de C. adamantium, embora este método seja indiferente para plântulas de C. pubescens. Sob as mesmas condições experimentais, plântulas de C. pubescens apresentam maior capacidade de emergência e de plântulas normais, além de maiores frequências diárias de plântulas emersas e redução dos tempos de emergência em relação às plântulas de C. adamantium.The species Campomanesia adamantium and Campomanesiapubescens are morphologically similar, occur in common areas in the Cerrado, so they are difficult to be separated and identified. The objectives were to analyze biometrics of fruits and seeds of C. adamantium

  11. seed oils

    African Journals Online (AJOL)

    Timothy Ademakinwa

    processes, production of biodiesel, as lubricant and in deep-frying purposes. They could ... for its juice, nectars and fruit while its seeds are ... Malaysia. The fine seed powder was stored in a plastic container inside a refrigerator at between 4 o.

  12. seed flour

    African Journals Online (AJOL)

    ONOS

    2010-09-06

    Sep 6, 2010 ... and with a nice taste, used for cooking or as lamp oil. The fatty acid ... Pra seeds were obtained from a local market in Nakhon Si Thammarat. Page 2. Table 1. Proximate composition of pra seed flour. Constituent. Percentage ...

  13. Robotic seeding

    DEFF Research Database (Denmark)

    Pedersen, Søren Marcus; Fountas, Spyros; Sørensen, Claus Aage Grøn

    2017-01-01

    Agricultural robotics has received attention for approximately 20 years, but today there are only a few examples of the application of robots in agricultural practice. The lack of uptake may be (at least partly) because in many cases there is either no compelling economic benefit......, or there is a benefit but it is not recognized. The aim of this chapter is to quantify the economic benefits from the application of agricultural robots under a specific condition where such a benefit is assumed to exist, namely the case of early seeding and re-seeding in sugar beet. With some predefined assumptions...... with regard to speed, capacity and seed mapping, we found that among these two technical systems both early seeding with a small robot and re-seeding using a robot for a smaller part of the field appear to be financially viable solutions in sugar beet production....

  14. Toxicity of extract of Magonia pubescens (Sapindales: Sapindaceae) St. Hil. to control the brown dog tick, Rhipicephalus sanguineus (Latreille)(Acari: Ixodidae)

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, Fernando F.; D' Alessandro, Walmirton B.; Freitas, Edmeia P.S. [Universidade Federal de Goias (UFG), Goiania, GO (Brazil). Instituto de Patologia Tropical e Saude Publica. Lab. de Artropodologia Medica e Veterinaria]. E-mail: fernandesff@pesquisador.cnpq.br

    2008-03-15

    The action of crude ethanol extract of the stem bark of the soapberry Magonia pubescens St. Hil. was studied upon larvae of the Brown Dog tick Rhipicephalus sanguineus (Latreille). Tick larvae were obtained by maintaining gravid females in an incubator, after collecting them from naturally infested kennels. The tick larvae were placed in envelopes of filter paper impregnated with different concentrations of the extract dissolved in dimethylsulfoxide (DMSO) and distilled water. Four tests were repeated with each solution (n {>=} 120). The control was carried out in DMSO and distilled water. The bioassays were performed at 27{+-}1 deg C, RH {>=} 80% and 12:12 light cycle. Mortality was observed after 48h exposure. All motionless larvae were considered to be dead. The extract of M. pubescens showed larvicidal potential against R. sanguineus. The lethal concentrations of 1503 ppm (LC{sub 50}) and 9991 ppm (LC{sub 99}) were obtained. There was no mortality in the control group. Based on the results of the current study, M. pubescens should be recognized as an future alternative acaricide for the control of Brown Dog tick. These results reinforce the importance of the preservation of this soapberry in its natural biome. (author)

  15. Toxicity of extract of Magonia pubescens (Sapindales: Sapindaceae) St. Hil. to control the brown dog tick, Rhipicephalus sanguineus (Latreille)(Acari: Ixodidae)

    International Nuclear Information System (INIS)

    Fernandes, Fernando F.; D'Alessandro, Walmirton B.; Freitas, Edmeia P.S.

    2008-01-01

    The action of crude ethanol extract of the stem bark of the soapberry Magonia pubescens St. Hil. was studied upon larvae of the Brown Dog tick Rhipicephalus sanguineus (Latreille). Tick larvae were obtained by maintaining gravid females in an incubator, after collecting them from naturally infested kennels. The tick larvae were placed in envelopes of filter paper impregnated with different concentrations of the extract dissolved in dimethylsulfoxide (DMSO) and distilled water. Four tests were repeated with each solution (n ≥ 120). The control was carried out in DMSO and distilled water. The bioassays were performed at 27±1 deg C, RH ≥ 80% and 12:12 light cycle. Mortality was observed after 48h exposure. All motionless larvae were considered to be dead. The extract of M. pubescens showed larvicidal potential against R. sanguineus. The lethal concentrations of 1503 ppm (LC 50 ) and 9991 ppm (LC 99 ) were obtained. There was no mortality in the control group. Based on the results of the current study, M. pubescens should be recognized as an future alternative acaricide for the control of Brown Dog tick. These results reinforce the importance of the preservation of this soapberry in its natural biome. (author)

  16. Efectos del pastoreo sobre el banco de semillas germinable y la vegetación establecida en pastizales de montaña del centro de Argentina Grazing effects on the germinable seed bank and standing vegetation in mountain grasslands from central Argentina

    Directory of Open Access Journals (Sweden)

    SEBASTIÁN MARQUEZ

    2002-06-01

    semillas persistente a corto y a largo plazo. El pastoreo, o su ausencia, no modifica la abundancia en el banco de semillas de la mayoría de las especies, sin embargo, las dos especies que sí cambian de manera importante su presencia en el banco, responden a dos estrategias opuestas, según lo observado por otros autores, una domina la productividad primaria del ecosistema en ausencia del pastoreo, la otra, ocuparía un papel importante en la cicatrización de huecos a la escala de microparche en sitios muy perturbadosWe studied the effect of grazing on the standing vegetation and the germinable soil seed bank in natural mountain grasslands at Pampa de Achala, Córdoba Province, Argentine. We analyzed the germinable seed bank at two depths (0-5 and 5-10 cm in five replicates from sites grazed at a moderate to intense grazing intensity, and in five replicates from sites excluded from herbivores during the last 10 years. We recorded species frequency on the standing vegetation and species abundance in the germinable seed bank. Grazing did not produce significant changes in the number of species of the standing vegetation, but produced an increase in species diversity due to a decrease in the dominance of perennial grasses such as Deyeuxia hieronymi and Festuca tucumanica. We registered only three alien species in the grasslands under study. Grazing did not produce significant changes in the seed bank richness and diversity. Average seed bank density significantly did not change after grazing, however, the density of the annual grass Muhlenbergia peruviana increased, while that of the tussock grass Deyeuxia hieronymi decreased in grazed plots. Seeds present in litter at the excluded sites comprised 20 % of the total number of species and 43 % of the total seed density. Ordination analysis, taking into account floristic composition of standing vegetation and the germinable seed bank, showed higher segregation between grazed-ungrazed samples than samples from vegetation and

  17. Seed regulations and local seed systems

    NARCIS (Netherlands)

    Louwaars, N.

    2000-01-01

    Seed regulations have been introduced in most countries based on the development of formal seed production. Concerns about seed quality and about the varietal identity of the seeds have commonly led to seed laws. However, formal regulations are often inappropriate for informal seed systems, which

  18. Production of Trametes pubescens Laccase under Submerged and Semi-Solid Culture Conditions on Agro-Industrial Wastes

    Science.gov (United States)

    Rodriguez, Alexander; Osma, Johann F.; Alméciga-Díaz, Carlos J.; Sánchez, Oscar F.

    2013-01-01

    Laccases are copper-containing enzymes involved in the degradation of lignocellulosic materials and used in the treatment of phenol-containing wastewater. In this study we investigated the effect of culture conditions, i.e. submerged or semi-solid, and copper supplementation on laccase production by Trametes pubescens grown on coffee husk, soybean pod husk, or cedar sawdust. The highest specific laccase activity was achieved when the culture was conducted under submerged conditions supplemented with copper (5 mM), and using coffee husk as substrate. The crude extracts presented two laccase isoforms with molecular mass of 120 (Lac1) and 60 kDa (Lac2). Regardless of the substrate, enzymatic crude extract and purified fractions behaved similarly at different temperatures and pHs, most of them presented the maximum activity at 55 °C and a pH range between 2 and 3. In addition, they showed similar stability and electro-chemical properties. At optimal culture conditions laccase activity was 7.69±0.28 U mg-1 of protein for the crude extract, and 0.08±0.001 and 2.86±0.05 U mg-1 of protein for Lac1 and Lac2, respectively. In summary, these results show the potential of coffee husk as an important and economical growth medium to produce laccase, offering a new alternative use for this common agro-industrial byproduct. PMID:24019936

  19. Evaluation and decontamination of crude oil-polluted soils using Centrosema pubescen Benth and amendment-support options.

    Science.gov (United States)

    Nwaichi, Eucharia O; Osuji, Leo C; Onyeike, Eugene N

    2011-04-01

    Growth performance and phytoremediation of soil of the Niger Delta Region of Nigeria artificially-contaminated with crude oil (up to 100 mL/2 kg soil) using centrosema pubescen Benth was investigated for 12 weeks. The soil samples in which the plants were established were either un-amended, or amended with NPK, or UREA or chicken manure. The extents of removal of PAHs and BTEX were measured as well as the rates of growth of the plants. Gas Chromatographic analysis confirmed the degradation of carcinogenic hydrocarbons like BTEXs and PAHs with this technique. At the highest dose of crude, the contaminant concentrations were 43 mg/kg PAHs, 10 mg/kg BTEX, and 5,613 mg/kg O&G. The greatest percent removal of BTEX was observed at the highest contaminant dose, and with the manure amendment. Similar trends were observed with PAHs and although they were less marked, the trends with PAHs may have been more highly statistically significant. There was no measurable plant uptake of contaminants. Inhibition of plant growth (measured as leaf area, shoot length and production of dry weight) was proportional to the dose of crude oil, but the manure amendment was very effective at reducing the growth inhibition. Interestingly, manure amendment reduced the phytotoxicity significantly in this study.

  20. Effect of leaf extract buasbuas (Premna pubescens Blume) for against of bacteria growth Staphylococcus aureus and Salmonella sp in vitro

    Science.gov (United States)

    Restuati, Martina; Pratiwi, Nanda; Widiyastuti, Gita

    2017-08-01

    Buasbuas (Premna pubescens Blume) is the one of the medicinal plants in Indonesia. This plant contains flavonoids potential as an antibacterial. Staphylococcus aureus and Salmonella sp is the one of the bacteria that can cause poisoning. This research aims to find out of inhibitory the extract of buasbuas leaves the growth of Staphylococcus aureus and Salmonella sp. This research was conducted in Medan Health Laboratory used hole sinks methods. Buasbuas leaves which has been condensed ethanol extract was diluted using aquadest with a concentration of 0%, 50%, 60%, 70%, 80%, 90% and dropped into MSA (Mannitol Salt Agar) media inoculated bacteria and wich is a hole sinks. Them incubated for 1 × 24 hours at a temperature of 37°C. The results of this research that the buasbuas extract with the different concentrations can inhibit the growth of Staphylococcus aureus, then the result were analyzed used of Non Factorial Experimental Method (ANOVA) where Fcount (337.54)> Ftable 0,05 (2,77); Ftabel 0.01 (4.25). While the maximum concentration buasbuas extract were more effective the growh of bacteria is 90% with average inhibition zone diameter of 11 mm.

  1. Carbon stock quantification of Morella pubescens (H. & B. ex Willd. Wilbur in two agroecosystems (Nariño, Colombia

    Directory of Open Access Journals (Sweden)

    Iván Andrés Delgado Vargas

    2016-07-01

    Full Text Available The carbon stored in radical biomass of Morella pubescens (Humb. & Bonpl. ex Willd. Wilbur, was quantified, in San Pablo, Nariño, Colombia, with height of 2010 m, average annual rainfall of 1300 mm and average temperature of 17ºC. Three experimental unites: silvopastoral system pasture alley cropping (Ac in two planting distances 4x3m and 4x4m, and natural regeneration system (Rn, 7 individual ware taken by experimental unite with (diameters 5 – 7 cm, by experimental unit, the sample was taken to 70 cm and 140 cm from the tree and three depths (0-15, 15-30, and 30-45 cm. In total 24 simples/trees were taken in 21 selected individuals. The mayor quantity of radical biomass and C stock was presented in the Ac arrangement 4x3 m of 27.6 t.ha-1 (14.1 t.C.ha-1; 24 4 t.ha-1 (12.1 t.C.ha-1 distance 4x4 m and 7.5 t.ha-1 and 2.9 t.ha-1In natural regeneration. In system Ac distance 4x4 m there were not differences in C stored by tree Rn, there was a decrease by 4x3 m, thus, the differences of accumulation between the systems, can obey to the density of the sowing.

  2. Organic acid compounds in root exudation of Moso Bamboo (Phyllostachys pubescens) and its bioactivity as affected by heavy metals.

    Science.gov (United States)

    Chen, Junren; Shafi, Mohammad; Wang, Ying; Wu, Jiasen; Ye, Zhengqian; Liu, Chen; Zhong, Bin; Guo, Hua; He, Lizhi; Liu, Dan

    2016-10-01

    Moso bamboo (Phyllostachys pubescens) has great potential as phytoremediation material in soil contaminated by heavy metals. A hydroponics experiment was conducted to determine organic acid compounds of root exudates of lead- (Pb), zinc- (Zn), copper- (Cu), and cadmium (Cd)-tolerant of Moso bamboo. Plants were grown in nutrients solution which included Pb, Zn, Cu, and Cd applied as Pb(NO 3 ) 2 (200 μM), ZnSO 4 ·7H 2 O (100 μM), CuSO 4 ·5H 2 O (25 μM), and CdCl 2 (10 μM), respectively. Oxalic acid and malic acid were detected in all treatments. Lactic acid was observed in Cu, Cd, and control treatments. The oxalic was the main organic acid exudated by Moso bamboo. In the sand culture experiment, the Moso bamboo significantly activated carbonate heavy metals under activation of roots. The concentration of water-soluble metals (except Pb) in sand were significantly increased as compared with control. Organic acids (1 mM mixed) were used due to its effect on the soil adsorption of heavy metals. After adding mixed organic acids, the Cu and Zn sorption capacity in soils was decreased markedly compared with enhanced Pb and Cd sorption capacity in soils. The sorption was analyzed using Langmuir and Freundlich equations with R 2 values that ranged from 0.956 to 0.999 and 0.919 to 0.997, respectively.

  3. Water relations, stomatal response and transpiration of Quercus pubescens trees during summer in a Mediterranean carbon dioxide spring

    Energy Technology Data Exchange (ETDEWEB)

    Tognetti, R.; Miglietta, F.; Raschi, A. [Consiglio Nazionale della Ricerche, Firenze (Italy); Longobucco, A. [Centro Studi per l`Informatica applicata all`Agricoltura, Firenze (Italy)

    1999-04-01

    Variations in water relations and stomatal response of downy oak (Quercus pubescens) were analyzed under Mediterranean field conditions during two consecutive summers at two locations characterized by different atmospheric CO{sub 2} concentrations due to the presence of a CO{sub 2} spring at one of the locations. The heat-pulse velocity technique was used to estimate water use during a five-month period from June to November 1994. At the end of the sap flow measurements, the trees were harvested and foliage and sapwood area measured. The effect of elevated CO{sub 2} concentration on leaf conductance was less at high leaf-to-air water vapour pressure difference than at low leaf-to-air water vapour pressure difference. Mean and diurnal sap fluxes were consistently higher in trees at the control site than in the trees at the CO{sub 2} spring site. Results are discussed in terms of effects of elevated CO{sub 2} concentration on plant water use at the organ and whole-tree level. 76 refs., 9 figs.

  4. Effect of epimedium pubescen flavonoid on bone mineral status and bone turnover in male rats chronically exposed to cigarette smoke.

    Science.gov (United States)

    Gao, Shu-guang; Cheng, Ling; Li, Kang-hua; Liu, Wen-He; Xu, Mai; Jiang, Wei; Wei, Li-Cheng; Zhang, Fang-jie; Xiao, Wen-feng; Xiong, Yi-lin; Tian, Jian; Zeng, Chao; Sun, Jin-peng; Xie, Qiang; Lei, Guang-hua

    2012-06-19

    Epimedii herba is one of the most frequently used herbs in formulas that are prescribed for the treatment of osteoporosis in China and its main constituent is Epimedium pubescen flavonoid (EPF). However, it is unclear whether EPF during chronic exposure to cigarette smoke may have a protective influence on the skeleton. The present study investigated the effect of EPF on bone mineral status and bone turnover in a rat model of human relatively high exposure to cigarette smoke. Fifty male Wistar rats were randomized into five groups: controls, passive smoking groups and passive smoking rats administered EPF at three dosage levels (75, 150 or 300 mg/kg/day) in drinking water for 4 months. A rat model of passive smoking was prepared by breeding male rats in a cigarette-smoking box. Bone mineral content (BMC), bone mineral density (BMD), bone turnover markers, bone histomorphometric parameters and biomechanical properties were examined. Smoke exposure decreased BMC and BMD, increased bone turnover (inhibited bone formation and stimulated its resorption), affected bone histomorphometry (increased trabecular separation and osteoclast surface per bone surface; decreased trabecular bone volume, trabecular thickness, trabecular number, cortical thickness, bone formation rate and osteoblast surface per bone surface), and reduced mechanical properties. EPF supplementation during cigarette smoke exposure prevented smoke-induced changes in bone mineral status and bone turnover. The results suggest that EPF can prevent the adverse effects of smoke exposure on bone by stimulating bone formation and inhibiting bone turnover and bone resorption.

  5. Carotenoids and Carotenoid Esters of Red and Yellow Physalis (Physalis alkekengi L. and P. pubescens L.) Fruits and Calyces.

    Science.gov (United States)

    Wen, Xin; Hempel, Judith; Schweiggert, Ralf M; Ni, Yuanying; Carle, Reinhold

    2017-08-02

    Carotenoid profiles of fruits and calyces of red (Physalis alkekengi L.) and yellow (P. pubescens L.) Physalis were characterized by HPLC-DAD-APCI-MS n . Altogether 69 carotenoids were detected in red Physalis, thereof, 45 were identified. In yellow Physalis, 40 carotenoids were detected and 33 were identified. Zeaxanthin esters with various fatty acids were found to be the most abundant carotenoids in red Physalis, accounting for 51-63% of total carotenoids, followed by β-cryptoxanthin esters (16-24%). In yellow Physalis, mainly free carotenoids such as lutein and β-carotene were found. Total carotenoid contents ranged between 19.8 and 21.6 mg/100 g fresh red Physalis fruits and 1.28-1.38 mg/100 g fresh yellow Physalis fruits, demonstrating that Physalis fruits are rich sources of dietary carotenoids. Yellow Physalis calyces contained only 153-306 μg carotenoids/g dry weight, while those of red Physalis contained substantially higher amounts (14.6-17.6 mg/g dry weight), thus possibly exhibiting great potential as a natural source for commercial zeaxanthin extraction.

  6. Carbon stock of Moso bamboo (Phyllostachys pubescens) forests along a latitude gradient in the subtropical region of China.

    Science.gov (United States)

    Xu, Mengjie; Ji, Haibao; Zhuang, Shunyao

    2018-01-01

    Latitude is an important factor that influences the carbon stock of Moso bamboo (Phyllostachys pubescens) forests. Accurate estimation of the carbon stock of Moso bamboo forest can contribute to sufficient evaluation of forests in carbon sequestration worldwide. Nevertheless, the effect of latitude on the carbon stock of Moso bamboo remains unclear. In this study, a field survey with 36 plots of Moso bamboo forests along a latitude gradient was conducted to investigate carbon stock. Results showed that the diameter at breast height (DBH) of Moso bamboo culms increased from 8.37 cm to 10.12 cm that well fitted by Weibull model, whereas the bamboo culm density decreased from 4722 culm ha-1 to 3400 culm ha-1 with increasing latitude. The bamboo biomass carbon decreased from 60.58 Mg C ha-1 to 48.31 Mg C ha-1 from north to south. The total carbon stock of Moso bamboo forests, which comprises soil and biomass carbon, ranged from 87.83 Mg C ha-1 to 119.5 Mg C ha-1 and linearly increased with latitude. As a fast-growing plant, Moso bamboo could be harvested amounts of 6.0 Mg C ha-1 to 7.6 Mg C ha-1 annually, which indicates a high potential of this species for carbon sequestration. Parameters obtained in this study can be used to accurately estimate the carbon stock of Moso bamboo forest to establish models of the global carbon balance.

  7. Centro escolar federal en Bludenz/Austria

    Directory of Open Access Journals (Sweden)

    Nehrer, Manfred

    1981-06-01

    Full Text Available Este centro escolar, considerado como uno de los más interesantes de Austria, se compone de cuatro cuerpos en los que se distribuyen, respectivamente, las escuelas, el gimnasio, la vivienda del conserje y el local de transformadores. En su construcción hay que destacar su adecuada flexibilidad, que permite dar cabida a las distintas funciones que en él se desarrollan, y la correcta adaptación del gran volumen edificado a las especiales características urbanas y arquitectónicas del ámbito circundante.

  8. Transpiration of montane Pinus sylvestris L. and Quercus pubescens Willd. forest stands measured with sap flow sensors in NE Spain

    Directory of Open Access Journals (Sweden)

    R. Poyatos

    2005-01-01

    Full Text Available Stand transpiration was measured during the 2003 and 2004 growing seasons using heat dissipation sap flow sensors in a Scots pine (Pinus sylvestris L. and a pubescent oak (Quercus pubescens Willd. forests located in a montane area of the Eastern Pyrenees (NE Spain. The first aim of the study was to assess the differences in quantitative estimates of transpiration (Ec and the response to evaporative demand of the two stands. Over the studied period of 2003, characterised by a severe drought episode during the summer, the oak stand (Ec was only 110 mm compared to the 239 mm transpired by the Scots pine stand, although the ratio of transpiration to reference evapotranspiration (Ec/ET0 in the oak stand compares well with the expected values predicted for low leaf area index (LAI oak forests in southern Europe. Scots pine showed a strong reduction in (Ec/ET0 as the drought developed, whereas pubescent oak was less affected by soil moisture deficits in the upper soil. As a second objective, and given the contrasting meteorological conditions between 2003 and 2004 summer periods, the interannual variability of transpiration was studied in the Scots pine plot. Rainfall during the summer months (June-September in 2003 was almost 40% less than in the same interval in 2004. Accordingly, transpiration was also reduced about 25% in 2003. Finally, Scots pine data from 2003 and 2004 was used to calibrate a simple transpiration model using ET0 and soil moisture deficit (SMD as input variables, and implicitly including stomatal responses to high vapour pressure deficits (Dd and soil water status.

  9. Effect of ultrasonic treatment on total phenolic extraction from Lavandula pubescens and its application in palm olein oil industry.

    Science.gov (United States)

    Rashed, Marwan M A; Tong, Qunyi; Abdelhai, Mandour H; Gasmalla, Mohammed A A; Ndayishimiye, Jean B; Chen, Long; Ren, Fei

    2016-03-01

    The aims of the current study were to evaluate the best technique for total phenolic extraction from Lavandula pubescens (Lp) and its application in vegetable oil industries as alternatives of synthetic food additives (TBHQ and BHT). To achieve these aims, three techniques of extraction were used: ultrasonic-microwave (40 kHz, 50 W, microwave power 480 W, 5 min), ultrasonic-homogenizer (20 kHz, 150 W, 5 min) and conventional maceration as a control. By using the Folin-Ciocalteu method, the total phenolic contents (TPC) (mg gallic acid equivalent/g dry matter) were found to be 253.87, 216.96 and 203.41 for ultrasonic-microwave extract, ultrasonic-homogenizer extract and maceration extract, respectively. The ultrasonic-microwave extract achieved the higher scavenger effect of DPPH (90.53%) with EC50 (19.54 μg/mL), and higher inhibition of β-carotene/linoleate emulsion deterioration (94.44%) with IC50 (30.62 μg/mL). The activity of the ultrasonic-microwave treatment could prolong the induction period (18.82 h) and oxidative stability index (1.67) of fresh refined, bleached and deodorized palm olein oil (RBDPOo) according to Rancimat assay. There was an important synergist effect between citric acid and Lp extracts in improving the oxidative stability of fresh RBDPOo. The results of this work also showed that the ultrasonic-microwave assisted extract was the most effective against Gram-positive and Gram-negative strains that were assessed in this study. The uses of ultrasonic-microwave could induce the acoustic cavitation and rupture of plant cells, and this facilitates the flow of solvent into the plant cells and enhances the desorption from the matrix of solid samples, and thus would enhance the efficiency of extraction based on cavitation phenomenon. Copyright © 2015 Elsevier B.V. All rights reserved.

  10. Biosynthesis, Characterization, and Bioactivities Evaluation of Silver and Gold Nanoparticles Mediated by the Roots of Chinese Herbal Angelica pubescens Maxim

    Science.gov (United States)

    Markus, Josua; Wang, Dandan; Kim, Yeon-Ju; Ahn, Sungeun; Mathiyalagan, Ramya; Wang, Chao; Yang, Deok Chun

    2017-01-01

    A facile synthesis and biological applications of silver (DH-AgNps) and gold nanoparticles (DH-AuNps) mediated by the aqueous extract of Angelicae Pubescentis Radix (Du Huo) are explored. Du Huo is a medicinal root belonging to Angelica pubescens Maxim which possesses anti-inflammatory, analgesic, and antioxidant properties. The absorption spectra of nanoparticles in varying root extract and metal ion concentration, pH, reaction temperatures, and time were recorded by ultraviolet-visible (UV-Vis) spectroscopy. The presence of DH-AgNps and DH-AuNps was confirmed from the surface plasmon resonance intensified at 414 and 540 nm, respectively. Field emission transmission electron micrograph (FE-TEM) analysis revealed the formation of quasi-spherical DH-AgNps and spherical icosahedral DH-AuNps. These novel DH-AgNps and DH-AuNps maintained an average crystallite size of 12.48 and 7.44 nm, respectively. The biosynthesized DH-AgNps and DH-AuNps exhibited antioxidant activity against 2,2-diphenyl-1-picrylhydrzyl (DPPH) radicals and the former exhibited antimicrobial activity against clinical pathogens including Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Salmonella enterica. The expected presence of flavonoids, sesquiterpenes, and phenols on the nanoparticle surface were conjectured to grant protection against aggregation and free radical scavenging activity. DH-AgNps and DH-AuNps were further investigated for their cytotoxic properties in RAW264.7 macrophages for their potential application as drug carriers to sites of inflammation. In conclusion, this green synthesis is favorable for the advancement of plant mediated nano-carriers in drug delivery systems, cancer diagnostic, and medical imaging.

  11. Effect of epimedium pubescen flavonoid on bone mineral status and bone turnover in male rats chronically exposed to cigarette smoke

    Directory of Open Access Journals (Sweden)

    Gao Shu-guang

    2012-06-01

    Full Text Available Abstract Background Epimedii herba is one of the most frequently used herbs in formulas that are prescribed for the treatment of osteoporosis in China and its main constituent is Epimedium pubescen flavonoid (EPF. However, it is unclear whether EPF during chronic exposure to cigarette smoke may have a protective influence on the skeleton. The present study investigated the effect of EPF on bone mineral status and bone turnover in a rat model of human relatively high exposure to cigarette smoke. Methods Fifty male Wistar rats were randomized into five groups: controls, passive smoking groups and passive smoking rats administered EPF at three dosage levels (75, 150 or 300 mg/kg/day in drinking water for 4 months. A rat model of passive smoking was prepared by breeding male rats in a cigarette-smoking box. Bone mineral content (BMC, bone mineral density (BMD, bone turnover markers, bone histomorphometric parameters and biomechanical properties were examined. Results Smoke exposure decreased BMC and BMD, increased bone turnover (inhibited bone formation and stimulated its resorption, affected bone histomorphometry (increased trabecular separation and osteoclast surface per bone surface; decreased trabecular bone volume, trabecular thickness, trabecular number, cortical thickness, bone formation rate and osteoblast surface per bone surface, and reduced mechanical properties. EPF supplementation during cigarette smoke exposure prevented smoke-induced changes in bone mineral status and bone turnover. Conclusion The results suggest that EPF can prevent the adverse effects of smoke exposure on bone by stimulating bone formation and inhibiting bone turnover and bone resorption.

  12. seed oil

    African Journals Online (AJOL)

    Wara

    Neem seed oil from the neem tree (Azadiracta indica) finds wide usage one of which is its utilization for cosmetics particularly .... obtained which is higher than that of olive oil 17. mgKOH/g (Davine ... The skin tolerance of shea fat employed as ...

  13. Hurwitz Centenary Conference, Centro Stefano Franscini

    CERN Document Server

    Mansour, Mohamed

    1996-01-01

    This book contains the historical development of the seminal paper of Adolf Hurwitz, professor in mathematics at ETH (1892~1919), and its impact on other fields. The major emphasis, however, is on modern results in stability theory and its application in the theory of control and numerics. In particular, stability of the following problems is treated: linear, nonlinear and time-dependent systems, discretizations of ordinary and partial differential equations, systems with time delay on multidimensional systems. In addition robust stability, pole placement and problems related to the stability radius are treated. The book is an outgrowth of the international conference "Centennial Hurwitz on Stability Theory" which was held to honor Adolf Hurwitz, whose arti­ cle on the location of roots of a polynomial was published one hundred years ago. The conference took place at the Centro Stefano Franscini, Monte Verita, Ascona, Switzerland, on May 21~26, 1995. This book contains a collection of the papers and open pro...

  14. Centro de investigaciones industriales, en Erlangen, Alemania

    Directory of Open Access Journals (Sweden)

    Maurer, H.

    1969-04-01

    Full Text Available This research centre consists of research laboratories, and jet development laboratories, as well as auxiliary buildings. They have been carefully planned in their general urban arrangement, to achieve the best possible mutual future extensions. Suitable spaces have been provided for open air technical meetings. The full project not only includes the Research Centre installations as such, but also workshops, residential zones, etc. Thus at a later stage a full project will be completed, with a total length of 2.5 km, which will include full housing and relaxation facilities.Las construcciones que integran este Centro de Investigación son las siguientes: laboratorios de investigación, laboratorios de desarrollo de reactores, etc. Se ajustan a un cuidado Plan urbanístico general y han sido diseñadas por grupos, a fin de lograr la debida coordinación entre sí, previéndose la posibilidad de futuras ampliaciones y creándose espacios apropiados para la celebración en ellos de coloquios al aire Ubre. El proyecto total, no solamente abarca las instalaciones del Centro de Investigación propiamente dichas, sino que incluye también los correspondientes talleres, zonas residenciales, etc. De esta forma, en el futuro se contará con un complejo organizado a lo largo de 2,5 km de longitud, en el cual se complementarán adecuadamente los lugares de trabajo, las viviendas y los locales de esparcimiento.

  15. Quantitative Analysis of Ca, Mg, and K in the Roots of Angelica pubescens f. biserrata by Laser-Induced Breakdown Spectroscopy Combined with Artificial Neural Networks

    Science.gov (United States)

    Wang, J.; Shi, M.; Zheng, P.; Xue, Sh.; Peng, R.

    2018-03-01

    Laser-induced breakdown spectroscopy has been applied for the quantitative analysis of Ca, Mg, and K in the roots of Angelica pubescens Maxim. f. biserrata Shan et Yuan used in traditional Chinese medicine. Ca II 317.993 nm, Mg I 517.268 nm, and K I 769.896 nm spectral lines have been chosen to set up calibration models for the analysis using the external standard and artificial neural network methods. The linear correlation coefficients of the predicted concentrations versus the standard concentrations of six samples determined by the artificial neural network method are 0.9896, 0.9945, and 0.9911 for Ca, Mg, and K, respectively, which are better than for the external standard method. The artificial neural network method also gives better performance comparing with the external standard method for the average and maximum relative errors, average relative standard deviations, and most maximum relative standard deviations of the predicted concentrations of Ca, Mg, and K in the six samples. Finally, it is proved that the artificial neural network method gives better performance compared to the external standard method for the quantitative analysis of Ca, Mg, and K in the roots of Angelica pubescens.

  16. Centro de congresos Hamburgo Alemania Federal

    Directory of Open Access Journals (Sweden)

    Schramm, J.

    1973-10-01

    Full Text Available Built near the town's botanical garden, this work is made up of the Congress Centre, as such, and a large Hotel, which are joined inside. The Centre is organized as follows: - Entrance hall which distributes visitors to: numerous rooms of differing sizes, press rooms, management, banquet and dance halls, exhibition area and other premises on the ground floor. — First floor with a restaurant and small conference rooms. — Second floor with two large halls, seating 3,000 and 1,500, respectively; acoustic arrangements have been made so that concerts can be held. — And, finally, two basements for parking, with space for 1,100 vehicles in all. The Hotel building, by itself, has a tall part, with 27 storeys, designed entirely for rooms, and another low part, with 4 floors, which contains: entrance, with cafeetria, bar and restaurant; a first level with living room, dance hall and conference rooms; and another level with a covered swimming pool and sauna baths. The whole unit has numerous entrances, in which the crossing of vehicles and pedestrians has been completely avoided, by using elevated ramps and underground passages.Levantada junto al jardín botánico de la ciudad, esta obra está constituida por el Centro de Congresos, propiamente dicho, y un gran Hotel, unido directamente al anterior. El Centro se organiza de la siguiente manera: Vestíbulo de entrada que distribuye la circulación peatonal a: numerosas salas de distintos tamaños, locales de prensa, administración, salas de banquetes y fiestas, zona de exposición y otras dependencias de la planta baja. Primera planta con un restaurante y pequeñas salas de conferencias. Segunda planta con dos grandes salas de 3.000 y 1.500 plazas, respectivamente; dispone de acondicionamiento acústico para posibilitar la celebración de conciertos. Y, por último, dos sótanos de aparcamiento con una capacidad total de 1.100 vehículos. El edificio del Hotel, por su parte, consta de una construcci

  17. Modelos matemáticos para estimar el crecimiento del fruto de chile manzano (Capsicum pubescens R y P

    Directory of Open Access Journals (Sweden)

    P. C. Rojas-Lara

    2008-01-01

    Full Text Available El híbrido intervarietal de chile manzano (Capsicum pubescens R y P Puebla x Zongolica es de alto rendimiento por su volumen, grosor de pericarpio y peso de fruto. El rendimiento se explica principalmente por el tamaño del fruto, siendo recomendable conocer la dinámica del crecimiento del mismo. Normalmente su análisis se realiza por medio de muestreos destructivos, lo que hace imposible utilizar el mismo fruto durante el ciclo de cultivo, además la competencia entre los órganos de la planta disminuye su tamaño y peso, afectando negativamente la calidad y rendimiento. Por lo cual el estudio del crecimiento a través de modelos matemáticos utilizando variables no destructivas permite proponer un manejo adecuado del cultivo. Por esta razón se propuso evaluar e identificar modelos matemáticos que describan el crecimiento del fruto, sin realizar muestreos destructivos. Se evaluaron los modelos: regresión lineal simple, regresión lineal múltiple y cuatro modelos no lineales. Con la hipótesis de que alguno de los seis modelos estudiados, explica eficientemente dicho crecimiento por medio de la variable independiente volumen de agua desplazada. Las plantas de chile se cultivaron bajo un sistema de producción intensivo, en 2004 y 2005. La variable dependiente fue el peso fresco de fruto y las variables independientes fueron: tiempo de crecimiento del fruto, longitud, ancho promedio de los hombros del fruto, volumen de agua desplazada y volumen del mismo. Se encontraron diferencias significativas entre las medias de las variables evaluadas en los dos periodos de muestreo (P<0.05. Los modelos que mejor explican el crecimiento del fruto son: regresión lineal simple (sólo en el 2004 en función del volumen de agua desplazada y el volumen de fruto, el modelo de regresión lineal múltiple describe adecuadamente dicho crecimiento utilizando además de las variables anteriormente mencionadas, el tiempo de crecimiento, la longitud y el ancho

  18. El concepto estadístico de centro de gravedad

    OpenAIRE

    Ruiz, Gabriel

    2003-01-01

    El objetivo de este trabajo es establecer una propuesta didáctica consistente en relacionar el concepto estadístico de centro de gravedad de una distribución de frecuencias bidimensional con el concepto físico y geométrico del mismo nombre. Las coordenadas del centro de gravedad son medias aritméticas, lo que nos permitirá visualizar algunas propiedades de la media aritmética.

  19. Organic leek seed production - securing seed quality

    DEFF Research Database (Denmark)

    Deleuran, Lise Christina; Boelt, Birte

    2011-01-01

    To maintain integrity in organic farming, availability of organically produced GM-free seed of varieties adapted to organic production systems is of vital impor-tance. Despite recent achievements, organic seed supply for a number of vegetable species is insufficient. Still, in many countries...... seeds. Tunnel production is a means of securing seed of high genetic purity and quality, and organic leek (Allium porrum L.) seed production was tested in tunnels in Denmark. The present trial focused on steckling size and in all years large stecklings had a positive effect on both seed yield...

  20. Organic Leek Seed Production - Securing Seed Quality

    DEFF Research Database (Denmark)

    Deleuran, L C; Boelt, B

    2011-01-01

    To maintain integrity in organic farming, availability of organically produced GM-free seed of varieties adapted to organic production systems is of vital impor-tance. Despite recent achievements, organic seed supply for a number of vegetable species is insufficient. Still, in many countries...... seeds. Tunnel production is a means of securing seed of high genetic purity and quality, and organic leek (Allium porrum L.) seed production was tested in tunnels in Denmark. The present trial focused on steckling size and in all years large stecklings had a positive effect on both seed yield...

  1. Centro parroquial - Eching - Munich - Alemania federal

    Directory of Open Access Journals (Sweden)

    Haindl, Friedrich F.

    1973-09-01

    Full Text Available To stand out among the scattered urbanization in which it lies, this Parish Centre was designed as a group of independent buildings, distributed around a court-yard or atrium, and built on a rectangular design, intented, respectively, for the church, parish home and children's nursery. The church, due to its height, is the dominating feature of the whole. It has a main aisle, encircled by a less high passage, a small side chapel and the vestry. The parish home which is made up of a ground floor and semibasement, has, in the latter, a room for table tennis, two for groups and an area for heating the whole building. In the ground floor there is a parish hall with a stage and library. The children's nursery has the ground floor and a small basement, in which there are three stores and a workshop. The ground floor houses: the children's area, with two large rooms and a rest room; the teachers' area, with two rooms, toilets and kitchen; the services area, and finally, to complete the floor, an office and meeting room. The whole building has been made of whitewashed brick walls, contrasting with the large window panes.Para destacar de la urbanización dispersa en la que se haya enclavado, este Centro Parroquial se concibió como un grupo de edificios independientes, distribuidos alrededor de un patio de entrada o atrio, con planta rectangular de diferentes dimensiones, destinados, respectivamente, a iglesia, hogar parroquial y jardín de infancia. La Iglesia es, por su altura, el elemento dominante del conjunto. Consta de una nave central, circundada por un pasillo de menor altura, por una pequeña capilla lateral y por el grupo de la sacristía. El hogar parroquial, que cuenta con planta baja y semisótano, tiene en este último: una sala para ping-pong, dos para grupos, y la zona para la calefacción de todo el conjunto. En la planta baja hay un salón parroquial con escenario y una biblioteca. El jardín de Infancia dispone de planta baja y un

  2. PIXE facility at Centro Atomico Bariloche

    Energy Technology Data Exchange (ETDEWEB)

    Limandri, S.; Rodriguez, L. [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) (Argentina); Olivares, C.; Bernardi, G. [Centro Atomico Bariloche, Comision Nacional de Energia Atomica, San Carlos de Bariloche, Rio Negro (Argentina); Suarez, S. [lnstituto Balseiro, Universidad Nacional de Cuyo, San Carlos de Bariloche, Rio Negro (Argentina)

    2013-07-01

    Full text: A Tandem accelerator, NEC Pelletron 5SDH, has been recently installed at Centro Atomico Bariloche, Argentina. This facility provides the local scientific community the opportunity to use nuclear techniques in different fields such as material science, environment (air, soil and food), biology, archaeology, etc.). The ion beam techniques available in our laboratory includes the ones commonly used in material analysis, i. e., PIXE (proton induced X-ray emission), RBS (Rutherford backscattering spectroscopy), PIGE (proton induced gamma ray emission), channeling and ERDA (elastic recall detection analysis). The line used for material analysis consists of a NEC-RC43 Endstation with setups and detectors for all the techniques above mentioned. This communication includes a description of the system facility and the main associated equipment, in particular that for PIXE measurements. In addition, we show some recent applications of PIXE to the study of archaeological ceramics, smokeless gun powders, and the experimental determination of the efficiency or our SDD detector. The detector efficiency was estimated for energies between 0.27 and 25 keV. The method applied is based on the comparison of X-ray characteristic intensities excited by 2-MeV protons in bulk samples with theoretical predictions. The results are compared with efficiency values obtained by the product of the window transmission and the detector quantum efficiency. Element constituents of black, white, brown and ocher pigments from Aguada Culture (600-900 before present) were studied. The results obtained are compared with measurements performed at the Laboratorio de Implantacao Ionica-UFRGS. This study is helpful to interpret the social, political economic and cultural contexts of pre-Inca societies and the interaction among different sites. Traces amounts present in seven smokeless gun powders commonly used in Argentina were determined. The powders were deposited on a carbon tape and the

  3. PIXE facility at Centro Atomico Bariloche

    International Nuclear Information System (INIS)

    Limandri, S.; Rodriguez, L.; Olivares, C.; Bernardi, G.; Suarez, S.

    2013-01-01

    Full text: A Tandem accelerator, NEC Pelletron 5SDH, has been recently installed at Centro Atomico Bariloche, Argentina. This facility provides the local scientific community the opportunity to use nuclear techniques in different fields such as material science, environment (air, soil and food), biology, archaeology, etc.). The ion beam techniques available in our laboratory includes the ones commonly used in material analysis, i. e., PIXE (proton induced X-ray emission), RBS (Rutherford backscattering spectroscopy), PIGE (proton induced gamma ray emission), channeling and ERDA (elastic recall detection analysis). The line used for material analysis consists of a NEC-RC43 Endstation with setups and detectors for all the techniques above mentioned. This communication includes a description of the system facility and the main associated equipment, in particular that for PIXE measurements. In addition, we show some recent applications of PIXE to the study of archaeological ceramics, smokeless gun powders, and the experimental determination of the efficiency or our SDD detector. The detector efficiency was estimated for energies between 0.27 and 25 keV. The method applied is based on the comparison of X-ray characteristic intensities excited by 2-MeV protons in bulk samples with theoretical predictions. The results are compared with efficiency values obtained by the product of the window transmission and the detector quantum efficiency. Element constituents of black, white, brown and ocher pigments from Aguada Culture (600-900 before present) were studied. The results obtained are compared with measurements performed at the Laboratorio de Implantacao Ionica-UFRGS. This study is helpful to interpret the social, political economic and cultural contexts of pre-Inca societies and the interaction among different sites. Traces amounts present in seven smokeless gun powders commonly used in Argentina were determined. The powders were deposited on a carbon tape and the

  4. Actuaciones educativas para la convivencia en centros con alumnado inmigrante

    Directory of Open Access Journals (Sweden)

    Alejandro Martínez González

    2012-01-01

    Full Text Available En el presente artículo se muestran los resultados del trabajo de campo llevado a cabo en 11 centros educativos en el proyecto p lan n acional i +D+ i (2008-2011: La mejora de la convivencia y el aprendizaje en los centros educativos de primaria y secundaria con alumnado inmigrante , donde a partir de diferentes actuaciones educativas (no segregación en grupos específicos, organización de actividades de acogida, asambleas de grupo, Círculos de Convivencia o participación de familiares que se están llevando a cabo, se está contribuyendo a la mejora de la convivencia entre el alumnado, las familias y las y los profesionales del centro educativo.

  5. Centro para reuniones, en Karpfenberg, Estiria (Austria

    Directory of Open Access Journals (Sweden)

    Windbrechtinger, W.

    1965-03-01

    naturaleza—, salas para reuniones de organizaciones políticas, etc. El primer piso aloja: oficinas de los sindicatos, sala de juntas, un aula de instrucción, tres habitaciones para huéspedes, la vivienda del conserje y los servicios correspondientes. Por su parte, el bloque de la sala de reuniones comprende: vestíbulo, la sala de reuniones propiamente dicha—capaz para 300 personas—, escenario, cafetería, cocina y otras dependencias auxiliares. Destaca este Centro de reuniones, por lo racional y simple de la solución adoptada, y por su feliz integración armónica en el paisaje urbanístico y arquitectónico de los alrededores.

  6. CNEA - Centro Atómico Bariloche

    Science.gov (United States)

    en Ciencia y Tecnología Formación de Recursos Humanos de alto nivel Mapa del sitio Contacto Buscar en la formación de recursos humanos. Leer más: Centro atómico bariloche Próximos Eventos

  7. Variational problems for plane curves in centro-affine geometry

    International Nuclear Information System (INIS)

    Musso, Emilio

    2010-01-01

    In this paper closed extremals of variational problems defined by quadratic polynomials in the centro-affine curvature are considered. The closure of the trajectories is discussed and the existence of countably many closed critical curves is proven. The geometrical properties of closed trajectories are analyzed by numerical methods.

  8. ASPECTOS ERGONÔMICOS E POSTURAIS EM CENTRO DE MATERIAL

    Directory of Open Access Journals (Sweden)

    Neusa Maria Cosía Alexandre

    Full Text Available Determinados fatores ambientais inadequados podem provocar lesões na coluna vertebral. Este trabalho discute certos aspectos ergonômicos e posturais específicos em Centro de Material com o objetivo de desenvolver uma consciência crítica a respeito dos efeitos do local de trabalho sobre a saúde.

  9. What Are Chia Seeds?

    Science.gov (United States)

    ... your diet? Chia seeds come from the desert plant Salvia hispanica , a member of the mint family. ... ancient Aztec diet. The seeds of a related plant, Salvia columbariae (golden chia), were used primarily by ...

  10. Seeds and Synergies

    International Development Research Centre (IDRC) Digital Library (Canada)

    'Seeds and Synergies presents inspiring evidence of change in practice and policy ... Seeds of inspiration: breathing new life into the formal agricultural research .... and Urban Development and Poverty Alleviation and Agricultural Commodity ...

  11. Seeds as biosocial commons

    NARCIS (Netherlands)

    Patnaik, Archana

    2016-01-01

    This research investigates and describes the conservation and use of Plant Genetic Resources (PGRs), especially seeds through processes of commonisation. Seeds form an important element for sustaining human life (through food production) and social relations (by maintaining agricultural

  12. Seed dispersal in fens

    NARCIS (Netherlands)

    Middleton, Beth; van Diggelen, Rudy; Jensen, Kai

    Question: How does seed dispersal reduce fen isolation and contribute to biodiversity? Location: European and North American fens. Methods: This paper reviews the literature on seed dispersal to fens. Results: Landscape fragmentation may reduce dispersal opportunities thereby isolating fens and

  13. Seed development and carbohydrates

    NARCIS (Netherlands)

    Wittich, P.E.

    1998-01-01

    Seeds assure the plant the onset of a next generation and a way of dispersal. They consist of endosperm and an embryo (originating from gametophytic tissue), enveloped by a seed coat (sporophytic tissue). Plants generate different types of seeds. For instance, the endosperm may either be

  14. Recent invasion of the mountain birch Betula pubescens ssp. tortuosa above the treeline due to climate change: genetic and ecological study in northern Sweden.

    Science.gov (United States)

    Truong, C; Palmé, A E; Felber, F

    2007-01-01

    Mountain birch, Betula pubescens ssp. tortuosa, forms the treeline in northern Sweden. A recent shift in the range of the species associated with an elevation of the treeline is commonly attributed to climate warming. Using microsatellite markers, we explored the genetic structure of populations along an altitudinal gradient close to the treeline. Low genetic differentiation was found between populations, whereas high genetic diversity was maintained within populations. High level of gene flow compensated for possible losses of genetic diversity at higher elevations and dissipated the founding effect of newly established populations above the treeline. Spatial autocorrelation analysis showed low spatial genetic structure within populations because of extensive gene flow. At the treeline, significant genetic structure within the juvenile age class at small distances did not persist in the adult age class, indicating recent expansion of young recruits due to the warming of the climate. Finally, seedling performance above the treeline was positively correlated with parameters related to temperature. These data confirm the high migration potential of the species in response to fluctuating environmental conditions and indicate that it is now invading higher altitudes due to the recent warming of the climate.

  15. Comparative analysis of Lacistema pubescens and dexamethasone on topical treatment of skin inflammation in a chronic disease model and side effects.

    Science.gov (United States)

    da Silva, Josiane M; Conegundes, Jéssica L M; Pinto, Nícolas C C; Mendes, Renata F; Castañon, Maria Christina M N; Scio, Elita

    2018-04-01

    This study aimed to evaluate the chronic topical anti-inflammatory activity of the pharmaceutical formulation ProHLP containing the hexane fraction of Lacistema pubescens (HLP). It was also investigated the possible cutaneous and systemic adverse effects of HLP and ProHLP in mice when compared to dexamethasone. The chronic topical anti-inflammatory activity was determined by croton oil multiple application-induced mouse ear oedema model. Histopathological analyses of ear tissue samples sensitized with croton oil were performed. Cutaneous atrophy induced by HLP and topical glucocorticoid treatments and excision skin wounds model to evidenced possible adverse reactions were also determined. ProHLP significantly reduced the mice ear oedema and considerably accelerated the wound-healing process. Also, HLP did not lead cutaneous atrophy and preserved the clinical aspect of the thymus, adrenal and spleen, unlike dexamethasone. The results suggested that ProHLP is an efficient and safer pharmaceutical formulation to treat chronic inflammatory diseases. © 2018 Royal Pharmaceutical Society.

  16. Metabolomics Analysis of Health Functions of Physalis Pubescens L. using by Ultra-performance Liquid Chromatography/Electrospray Ionization Quadruple Time-of-Flight Mass Spectrometry

    Institute of Scientific and Technical Information of China (English)

    Hang Chu; Hui Sun; Guang-Li Yan; Ai-Hua Zhang; Chang Liu; Hui Dong; Xiang-Cai Meng; Xi-Jun Wang

    2015-01-01

    Herbal medicines may benefit from metabolomics studies, and applying metabolomics may provide answers about which herbal interventions may be effective for individuals, which metabolic processes are triggered, and the subsequent chemical pathways of activity. Physalis pubescens L (PPL) is an herbal fruit for one year living plant and has been developed into healthy function’s food. However, the mechanisms of health functions are still unclear. To comprehensively and holistically assess its anti-fatigue and antioxidant effects, a novel integrative metabolomics approach was applied. In this study, we present metabolomics analysis applying ultra performance liquid chromatography coupled to quadrupole with time-of-flight mass spectrometry (UPLC-Q/TOF-MS) to determine metabolite alterations after oral administration PPL to rats. Fifteen metabolites in urine were identified as potential biomarkers. Pattern analysis of the UPLC-Q/TOF-MS data disclosed that PPL could relieve fatigue rats by ameliorating the disturbance in amino acids metabolism and energy metabolism, alleviating the oxidative stress from reactive oxygen species and the inflammatory damage, and recovering the destructed regulation. Based on these results, we demonstrated that PPL is a promising source of natural anti-fatigue and antioxidants material for use in functional foods and medicines.

  17. Living and Dead Aboveground Biomass in Mediterranean Forests: Evidence of Old-Growth Traits in a Quercus pubescens Willd. s.l. Stand

    Directory of Open Access Journals (Sweden)

    Emilio Badalamenti

    2017-05-01

    Full Text Available For a long time, human impact has deeply simplified most of the forest ecosystems of the Mediterranean Basin. Here, forests have seldom had the chance to naturally develop a complex and multilayered structure, to host large and old trees and rich biological communities, approaching old-growth conditions. Also for this reason, limited information is currently available about Mediterranean old-growth forests, particularly with regard to deadwood. The main aim of this work is to help fill this critical knowledge gap. In Sicily (Italy, we identified a Quercus pubescens forest that seemed to show some typical old-growth features. Total living volume (360 m3 ha−1 and basal area (34 m2 ha−1 were, respectively, about 6 and 3 times higher than the averages recorded in the regional forest inventory for this forest type. Deadwood was particularly abundant, exceeding the threshold of 30 m3 ha−1, mainly represented by lying dead elements. Dead to live wood ratio reached 9%, a value close to the threshold of 10% considered for Mediterranean old-growth forests. As the investigated forest showed some typical old-growth traits, it deserves to be fully protected and could be a permanent monitoring area for studying deadwood and stand dynamics in mature Mediterranean stands.

  18. Centro de gastronomía y entretenimiento

    Directory of Open Access Journals (Sweden)

    Felipe Chaverri Peralta

    2015-07-01

    Full Text Available El Centro de Gastronomía y Entretenimiento fue una práctica de proyecto arquitectónico del Taller de Diseño Nivel 7, Grupo 02, de la Escuela de Arquitectura de la Universidad de Costa Rica (UCR, realizado en el segundo semestre del año 2014. Este proyecto fue ubicado en al noreste del centro de la ciudad de San José, Costa Rica The Food and Entertainment Center was a practice of architectural project Design Workshop Level 7, Group 02, of the School of Architecture at the University of Costa Rica(UCR, in the second half of 2014. This project was located in the northeast downtown San José, Costa Rica.

  19. Gordailu, Centro de Patrimonio Cultural Mueble de Gipuzkoa. Estudios previos

    Directory of Open Access Journals (Sweden)

    Maite Barrio Olano

    2009-08-01

    Full Text Available La Diputación Foral de Gipuzkoa ha impulsado la creación de una nueva infraestructura cultural: el Centro de Patrimonio Cultural Mueble de Gipuzkoa, denominado Gordailu (palabra en euskera cuyo significado es “depósito”. Este Centro tendrá como misión la gestión integral del patrimonio cultural mueble del territorio, partiendo de un núcleo central, el depósito in situ de colecciones de distinta titularidad. Dentro de la variedad de temas de estudio y análisis que implica un proyecto de esta envergadura, en el presente artículo se relatan los relativos al plan de necesidades, evaluación de colecciones y definición de condiciones medioambientales.

  20. El centro cultural: Una puerta abierta a la memoria

    Directory of Open Access Journals (Sweden)

    Marcela Alejandra País Andrade

    2006-12-01

    Full Text Available En este artículo, describimos y analizamos las actividades culturales/recreativas ofrecidas en los centros culturales dependientes del Programa Cultural en Barrios, como formas posibles de usos de la/las memoria/s para representar el pasado. Responden a un contexto macro, el Centro Cultural, cristalizando una política pública-cultural (el Programa Cultural en Barrios como una de las diferentes formas por medio de las cuales, el Estado administra el recuerdo colectivo. Nos centramos en las actividades culturales/recreativas que realizan los jóvenes de sectores medios, en tres de estos centros culturales. Paralelamente, reflexionamos cómo significan sus estilos de vida a través de estas prácticas realizadas en su tiempo libre y vinculadas al consumo cultural hegemónico relacionado a las políticas culturales. Para ello, se han entrevistado coordinadores y promotores culturales, jóvenes de 18 a 24 años que realizan alguna actividad cultural/recreativa. Se han analizado encuestas, escritos y archivos generados por los Centros y por el Programa.Neste artigo nós descrevemos e analisamos as atividades culturais/de lazer oferecidas nos Centros culturais dependentes do Programa Cultural nos Bairros, como formas possíveis de usos da/s memória/s para representar o passado. Respondendo a um contexto mais amplo, o Centro Cultural, cristalizando uma política público-culturais (o Programa Cultural nos Bairros como uma das diferentes formas por médio das quais o Estado administra a memória coletiva. Nós colocamos a atenção nas atividades culturais/de lazer que realizam os jovens de setores médios em três centros culturais. Ao mesmo tempo, refletimos na forma em que eles significam seus estilos de vida através destas práticas realizadas no seu tempo livre e vinculadas ao consumo cultural hegemônico em relação às políticas culturais. Para fazer isto, nós temos entrevistado coordenadores e promotores culturais, jovens de 18 à 24 anos

  1. Arte, cultura e cuidado nos centros de atencao psicossocial

    Directory of Open Access Journals (Sweden)

    Ana Tereza Costa Galvanese

    2013-06-01

    Full Text Available OBJETIVO: Analisar o processo de cuidado desenvolvido por meio de arte e cultura em centros de atenção psicossocial. MÉTODOS: Estudo integrado à pesquisa de avaliação dos centros de atenção psicossocial, em São Paulo, SP. Foram analisados os relatos da observação de tipo etnográfico de 126 atividades grupais de arte e cultura realizadas em 21 desses centros, entre 2007 e 2008. A análise incluiu depoimentos de coordenadores sobre os objetivos das atividades observadas. Baseado em referenciais teóricos da atenção psicossocial, utilizou-se da técnica de análise de conteúdo para investigar relações entre meios terapêuticos (enquadres, atividades e vínculos e objetivos das atividades. RESULTADOS: Três tendências de cuidado foram identificadas: (1 estritamente clínica, predominante e marcada por atividades realizadas dentro dos centros com foco em competências pessoais e interações grupais; (2 psicossocial, que incluiu atividades no território, ampliação dos repertórios culturais e da circulação social; e (3 residual, minoritária e sem ganhos psicossociais. CONCLUSÕES: A realização de atividades de arte e cultura que produzam cuidado na perspectiva da reabilitação psicossocial depende do acesso dos profissionais a bens culturais e a processos criativos, do reconhecimento dessas atividades como trabalho integrado a toda a equipe e da consideração de todos os atores envolvidos como produtores de fatos de cultura.

  2. Hot seeding using large Y-123 seeds

    International Nuclear Information System (INIS)

    Scruggs, S J; Putman, P T; Zhou, Y X; Fang, H; Salama, K

    2006-01-01

    There are several motivations for increasing the diameter of melt textured single domain discs. The maximum magnetic field produced by a trapped field magnet is proportional to the radius of the sample. Furthermore, the availability of trapped field magnets with large diameter could enable their use in applications that have traditionally been considered to require wound electromagnets, such as beam bending magnets for particle accelerators and electric propulsion. We have investigated the possibility of using large area epitaxial growth instead of the conventional point nucleation growth mechanism. This process involves the use of large Y123 seeds for the purpose of increasing the maximum achievable Y123 single domain size. The hot seeding technique using large Y-123 seeds was employed to seed Y-123 samples. Trapped field measurements indicate that single domain samples were indeed grown by this technique. Microstructural evaluation indicates that growth can be characterized by a rapid nucleation followed by the usual peritectic grain growth which occurs when large seeds are used. Critical temperature measurements show that no local T c suppression occurs in the vicinity of the seed. This work supports the suggestion of using an iterative method for increasing the size of Y-123 single domains that can be grown

  3. Oil palm seed distribution

    Directory of Open Access Journals (Sweden)

    Durand-Gasselin Tristan

    2005-03-01

    Full Text Available For a tropical plant, the oil palm commodity chain has the peculiarity of possessing a major seed production sector for reasons that are primarily genetic. This seed sector has numerous original aspects. Breeders are also propagators and usually also distribute their seeds. Oil palm seeds are semi-recalcitrant: they display pseudo-dormancy. Achieving seed germination is difficult and requires lengthy treatments and special installations. This restriction greatly influences seed distribution and the role of the different stakeholders in the commodity chain. It was only once it had been discovered how the “sh” gene functioned, which controls shell thickness, and when it became necessary to produce “tenera” seeds derived from exclusively “dura x pisifera” crosses, that a true seed market developed. In addition it is difficult to organize seed distribution to smallholders. This is partly due to difficulties that the profession, or a State-run organization, has in controlling middlemen networks, and partly to the absence of any protective systems (UPOV, plant breeder certificate, etc. that generally oblige breeders to preserve and propagate parents in their own installations. In fact there are major inequalities in the access to seeds between agroindustry and smallholders. Another peculiarity of the oil palm seed market is the virtually total absence of guarantees for buyers: the quality of the research conducted by breeders, the seed production strategies necessary for transferring genetic progress, and the technical quality of production. The only guarantee today comes from the relations of confidence established year after year between breeders/distributors and growers. In this fields, research can lead to some proposals: molecular biology offers some interesting prospects for certifying seed quality and social science develop effective communication methods.

  4. High rates of gene flow by pollen and seed in oak populations across Europe.

    Directory of Open Access Journals (Sweden)

    Sophie Gerber

    Full Text Available Gene flow is a key factor in the evolution of species, influencing effective population size, hybridisation and local adaptation. We analysed local gene flow in eight stands of white oak (mostly Quercus petraea and Q. robur, but also Q. pubescens and Q. faginea distributed across Europe. Adult trees within a given area in each stand were exhaustively sampled (range [239, 754], mean 423, mapped, and acorns were collected ([17,147], 51 from several mother trees ([3], [47], 23. Seedlings ([65,387], 178 were harvested and geo-referenced in six of the eight stands. Genetic information was obtained from screening distinct molecular markers spread across the genome, genotyping each tree, acorn or seedling. All samples were thus genotyped at 5-8 nuclear microsatellite loci. Fathers/parents were assigned to acorns and seedlings using likelihood methods. Mating success of male and female parents, pollen and seed dispersal curves, and also hybridisation rates were estimated in each stand and compared on a continental scale. On average, the percentage of the wind-borne pollen from outside the stand was 60%, with large variation among stands (21-88%. Mean seed immigration into the stand was 40%, a high value for oaks that are generally considered to have limited seed dispersal. However, this estimate varied greatly among stands (20-66%. Gene flow was mostly intraspecific, with large variation, as some trees and stands showed particularly high rates of hybridisation. Our results show that mating success was unevenly distributed among trees. The high levels of gene flow suggest that geographically remote oak stands are unlikely to be genetically isolated, questioning the static definition of gene reserves and seed stands.

  5. Does the informal seed system threaten cowpea seed health?

    NARCIS (Netherlands)

    Biemond, P.C.; Oguntade, O.; Lava Kumar, P.; Stomph, T.J.; Termorshuizen, A.J.; Struik, P.C.

    2013-01-01

    Most smallholder farmers in developing countries depend on an informal Seed System (SS) for their seed. The informal SS is often criticized because farmer-produced seed samples are not tested for seed health, thus accepting the risk of planting infected seeds. Here we aimed at assessing the quality

  6. Catalytic effect of KF-846 on the reforming of the primary intermediates from the co-pyrolysis of pubescens and LDPE

    International Nuclear Information System (INIS)

    Liu, Wen-wu; Hu, Chang-wei; Tong, Dong-mei; Yang, Yu; Li, Gui-ying; Zhu, Liang-fang; Tang, Jin-Qiang

    2014-01-01

    Highlights: • Reforming reactions were inhibited by H 2 , decrease of acidity and low temperature. • There was a synergistic effect on producing hydrogen between Ni and Mo. • The lattice oxygen over catalyst employed might transfer into the intermediates. • Co-pyrolysis, low temperature and N 2 could restrain oxygen transfer to some extent. - Abstract: Co-pyrolysis is regarded as an effective approach to upgrade the quality of pyrolysis products. In this work the activity of KF-846 was evaluated by co-pyrolysis of pubescens and low density polyethylene under different experimental conditions including catalytic mode, pyrolytic atmosphere and temperature, etc. The results showed that the fresh KF-846 exerted strong effects of cyclization, aromatization, hydrogen transfer and vapor-catalytic reforming reactions on the primary intermediates from the co-pyrolysis. The hydrogen-rich gases indicated a synergistic effect between Ni and Mo over KF-846 on producing hydrogen. More importantly, the reforming reactions might be inhibited to some extent by H 2 atmosphere, the low temperature and the decrease of acidity over catalyst. Furthermore, it was deduced that the oxygen over the lattice of catalyst or some intermediates might transfer into other intermediates, possibly resulting in more products with high oxygen content, but it was presumed that the low temperature, co-pyrolysis process and N 2 atmosphere could repress the trend to a certain degree. The mass and energy balance of co-pyrolysis were analyzed, and the main reaction pathways were also proposed. The interference in pyrolysis by regulating the catalytic mode, pyrolytic atmosphere and temperature, acidity over catalyst might posses a certain guiding significance for the pyrolytic technology and the design/selection of catalysts employed

  7. Germinación, microinjertación y cultivo de callos in vitro de Vasconcellea stipulata V.M. Badillo y Vasconcellea pubescens A.DC

    OpenAIRE

    Espinosa Soto, Isabel

    2016-01-01

    En varias poblaciones rurales de regiones andinas y centroamericanas se utilizan con fines etnomédicos las hojas, el látex y el fruto de las plantas de la familia Caricaceae cuyo miembro más representativo es la papaya (Carica papaya L.), la cual produce la fuente comercial más importante de la enzima proteolítica papaína. El presente trabajo estudia las especies Vasconcellea stipulata V.M. Badillo y Vasconcellea pubescens A.DC que pertenecen al género Vasconcellea, miembros de la familia Car...

  8. combining high seed number and weight to improve seed yield

    African Journals Online (AJOL)

    ACSS

    ABSTRACT. Increasing seed size and seed weight is an important trait for trade, yield component and adaptation of chickpea ... determining yield or quality, and the development of rapid and ..... C.G. 1981. Control of seed growth in soybeans.

  9. Producing the target seed: Seed collection, treatment, and storage

    Science.gov (United States)

    Robert P. Karrfalt

    2011-01-01

    The role of high quality seeds in producing target seedlings is reviewed. Basic seed handling and upgrading techniques are summarized. Current advances in seed science and technology as well as those on the horizon are discussed.

  10. Efficiency of alfalfa seed processing with different seed purity

    OpenAIRE

    Đokić, Dragoslav; Stanisavljević, Rade; Terzić, Dragan; Milenković, Jasmina; Radivojević, Gordana; Koprivica, Ranko; Štrbanović, Ratibor

    2015-01-01

    The work was carried out analysis of the impact of the initial purity of raw alfalfa seed on the resulting amount of processed seed in the processing. Alfalfa is very important perennial forage legume which is used for fodder and seed production. Alfalfa seed is possible to achieve high yields and very good financial effects. To obtain the seed material with good characteristics complex machines for cleaning and sorting seeds are used. In the processing center of the Institute for forage crop...

  11. Paper (essay on seed

    Directory of Open Access Journals (Sweden)

    Mirić Mladen

    2013-01-01

    Full Text Available Based on detailed studies of the past of the agrarian thought of the world (evolution of agro-innovation, and within it, the relationship of man and seed, the author has selected key data for Table 1. In addition, more or less known folk sayings, proverbs, curses and allegories in which the seed is the key word have been collected. Then, religious books, folk art and literature works (sayings of prominent individuals and experts and observations of the author himself have been studied. According to the collected opus, it can be concluded that the vast importance of seed meaningfully entwined into all spheres of folk life and cultural heritage. Seed is directly tied to the following eight key (revolutionary milestones in the food and economic life of mankind: 1. the first and for the longest time, the seed used to be the main food of the people and the first food reserve; 2. Neolithic Revolution was simply caused by the sowing of seeds; 3. for the sake of sowing man began to develop more complex processing techniques; 4. everywhere and forever, especially since the late 15th century, the seed has been a carrier of (rescuing plants between Europe and the New World, that is, between continents; 5. seed was the first product that has been chemically treated since the mid-18th century; 6. standard operation procedures and quality are promoted on seed by which it became the first product to have prescribed (compulsory methods, but it also became a good whose quality has to be tested before sale; 7. hybrid seed is a 'perpetrator' of the green revolution in the mid-20th century and at last there is disputable seed of genetically modified organisms that are spreading with certain reactions. The author proposes that the United Nations Standard International Trade Classification includes a special section (division which would classify the seed for sowing, while beyond this Classification terms such as seed, plant seed should be replaced with non-seed

  12. Seed dormancy and germination.

    Science.gov (United States)

    Penfield, Steven

    2017-09-11

    Reproduction is a critical time in plant life history. Therefore, genes affecting seed dormancy and germination are among those under strongest selection in natural plant populations. Germination terminates seed dispersal and thus influences the location and timing of plant growth. After seed shedding, germination can be prevented by a property known as seed dormancy. In practise, seeds are rarely either dormant or non-dormant, but seeds whose dormancy-inducing pathways are activated to higher levels will germinate in an ever-narrower range of environments. Thus, measurements of dormancy must always be accompanied by analysis of environmental contexts in which phenotypes or behaviours are described. At its simplest, dormancy can be imposed by the formation of a simple physical barrier around the seed through which gas exchange and the passage of water are prevented. Seeds featuring this so-called 'physical dormancy' often require either scarification or passage through an animal gut (replete with its associated digestive enzymes) to disrupt the barrier and permit germination. In other types of seeds with 'morphological dormancy' the embryo remains under-developed at maturity and a dormant phase exists as the embryo continues its growth post-shedding, eventually breaking through the surrounding tissues. By far, the majority of seeds exhibit 'physiological dormancy' - a quiescence program initiated by either the embryo or the surrounding endosperm tissues. Physiological dormancy uses germination-inhibiting hormones to prevent germination in the absence of the specific environmental triggers that promote germination. During and after germination, early seedling growth is supported by catabolism of stored reserves of protein, oil or starch accumulated during seed maturation. These reserves support cell expansion, chloroplast development and root growth until photoauxotrophic growth can be resumed. Crown Copyright © 2017. Published by Elsevier Ltd. All rights reserved.

  13. O trabalho de vigilância nos centros comerciais

    OpenAIRE

    Gadea,Charles; Cruz,Sofia Alexandra

    2013-01-01

    Este artigo visa escrutinar em termos sociológicos a atividade profissional dos vigilantes nos centros comerciais, analisando o tipo de competências profissionais exigidas, a configuração da hierarquia profissional da vigilância e sua articulação com a comunicação cotidiana entre os vigilantes e, por fim, os desafios e dilemas subjacentes ao ato de vigiar. A pesquisa baseia-se metodologicamente em dados obtidos a partir de entrevistas semidiretivas a vigilantes e observação direta dos seus es...

  14. Drenagem urbana: centro histórico de Leiria

    OpenAIRE

    Martins, Wilson Antunes Xavier

    2016-01-01

    No que concerne ao funcionamento de um sistema de drenagem urbana a maior preocupação é o encaminhamento das águas provenientes de precipitações ocorrentes em áreas urbanas para pontos de descarga no meio recetor fora das zonas urbanas, o mais rápido possível. Os centros urbanos estão munidos de diversos tipos de ocupação do solo, conduzindo ao aumento da impermeabilização do solo, que em termos de drenagem urbana não é vantajoso porque reduz a capacidade de infiltração no solo, aumentando...

  15. Centro internacional para windsurfistas, playa de Vargas, Gran Canaria

    OpenAIRE

    Pérez Sosa, Isacó

    2006-01-01

    El proyecto propone realizar un centro internacional que reúna tanto las instalaciones necesarias para realizar competiciones de windsurf como un albergue, un gimnasio de mantenimiento e instalaciones para otras actividades acuáticas o de ocio complementarias. El edificio se desarrollará en tres construcciones bajas longitudinales que se adaptaran al terreno empotrándose a él y abriéndose hacia el mar. Originando éstas terrazas se sigue la forma común tradicional de asentamiento sobre el ter...

  16. Efectos combinados de escarificación y de hidratación parcial en la germinación de semillas frescas de leguminosas Combined effects of scarification and partial hydration on the germination of fresh legume seeds

    Directory of Open Access Journals (Sweden)

    Yolanda González

    2008-12-01

    Full Text Available Se aplicó un diseño de clasificación simple con arreglo factorial y cinco réplicas (25 semillas cada una para conocer la germinación de las semillas frescas de leguminosas sometidas a diferentes tratamientos pregerminativos de hidratación-deshidratación y condiciones controladas de estrés calórico del sustrato. Previamente se estudió el comportamiento germinativo ante tratamientos de escarificación: agua a 80ºC durante 2' (en semillas de Crotalaria sp. y H2SO4 al 96% durante 10' (en semillas de Indigofera sp., Desmanthus virgatus y Centrosema pubescens, que se combinaron con un tratamiento de hidratación parcial en agua a temperatura alterna de 25/30ºC (termoperíodo óptimo de germinación. La hidratación parcial se realizó hasta dos horas antes del inicio de la germinación visible; en las semillas escarificadas de Indigofera sp., D. virgatus, Crotalaria sp. y C. pubescens este momento se alcanzó a las 15, 16, 16 y 19 horas, respectivamente. La deshidratación se llevó a cabo al aire durante 48 horas, hasta alcanzar aproximadamente el contenido inicial de humedad de las semillas (7-12% en base a la masa fresca. En todas las especies, excepto en D. virgatus, los tratamientos de hidratación parcial incrementaron el porcentaje de germinación, aunque originaron una mayor velocidad de germinación. Se concluye que los tratamientos de hidratación parcial en agua son adecuados para incrementar la germinación de las especies estudiadas, excepto en D. virgatus, bajo condiciones controladas de estrés calórico.A simple classification design with factorial arrangement and five replications (25 seeds each was used in order to know the germination of fresh legume seeds subject to different pregerminative hydration-dehydration treatments and controlled conditions of caloric stress of the substratum. The germinative performance before scarification treatments was previously studied: water at 80ºC for 2' (in Crotalaria sp. seeds and H2

  17. Artificial Seeds and their Applications

    Indian Academy of Sciences (India)

    currently working on ... heterozygosity of seed, minute seed size, presence of reduced ... Advantages of Artificial or Synthetic Seeds over Somatic Embryos for Propagation .... hour gives optimum bead hardness and rigidity for the produc-.

  18. Seed thioredoxin h

    DEFF Research Database (Denmark)

    Hägglund, Per; Finnie, Christine; Yano, Hiroyuki

    2016-01-01

    , for example chloroplastic f- and m-type thioredoxins involved in regulation of the Calvin-Benson cycle. The cytosolic h-type thioredoxins act as key regulators of seed germination and are recycled by NADPH-dependent thioredoxin reductase. The present review on thioredoxin h systems in plant seeds focuses...

  19. Saving Seed Microbiomes

    NARCIS (Netherlands)

    Berg, Gabriele; Raaijmakers, J.M.

    2018-01-01

    Plant seeds are home to diverse microbial communities whose composition is determined by plant genotype, environment, and management practices. Plant domestication is now recognized as an important driver of plant-associated microbial diversity. To what extent and how domestication affects seed

  20. El Centro de Cardioestimuladores del Uruguay. CCC Medical Devices

    Directory of Open Access Journals (Sweden)

    Pablo Darscht

    2011-05-01

    Full Text Available Estudio de caso del Centro de Cardioestimuladores del Uruguay - CCC Medical Devices preparado a solicitud de Ingenio en el marco del proyecto financiado por la Iniciativa para Incubadoras de InfoDev - Grupo Banco Mundial. Este estudio detalla los pasos seguidos por una empresa nacional con un fuerte factor de innovación y los cambios producidos en el entorno de los negocios de la empresa. El comienzo de una pequeña empresa de marcapasos que tras pasar por diferentes etapas hoy gana mercados en el área de ingeniería para dispositivos médicos para diferentes empresas de investigación biomédica a nivel internacional.AbstractCase study of the Centro de Cardioestimuladores del Uruguay - CCC Medical Devices prepared on behalf of Ingenio within the project financed by de Incubator Initiative of InfoDev-World Bank Group. This study refers to the steps followed by a highly innovative local company and to the changes in its business environment. The start up of a small pacemakers company that after going through different stages is presently increasing its market share in the area of engineering of medical devices for biomedic research companies worldwide.

  1. IRCAM, Centro Pompidou París – Francia

    Directory of Open Access Journals (Sweden)

    Piano, -

    1979-05-01

    Full Text Available IRCAM is an autonomous department of the well known Pompidou Centre. The main building, destined to many varied cultural purposes, consists of a broad, open structure combining different spaces and functions, with ample flexibility, capable of housing the most diversified activities. IRCAM is integrated in this wide range of functions as an underground cellular complex adjacent to the Centre. It contains very specific acoustic features to make it capable, under optimal conditions, of carrying out its main objective: acoustic musical research work.

    El IRCAM es un departamento autónomo del conocido Centro Georges Pompidou. El edificio principal, destinado a usos culturales muy diferentes, está constituido por una amplia y abierta estructura que combina distintos ambientes y funciones, dotada de mucha flexibilidad y apta para el desarrollo de las más diversas actividades. El IRCAM queda incorporado a este abanico de funciones como un departamento celular subterráneo, contiguo al Centro. Presenta características acústicas muy específicas que le posibilitan para el desarrollo en condiciones óptimas de su función: la investigación en el campo acústico-musical.

  2. REQUALIFICAÇÃO URBANA NO CENTRO DE FORTALEZA (CE

    Directory of Open Access Journals (Sweden)

    Francisco Clébio Rodrigues Lopes

    2015-08-01

    Full Text Available A descentralização em Fortaleza gerou perda de população residente,desinvestimentos e expansão do comércio ambulante na Área Central nas últimastrês décadas. Face à problemática, um grupo formado por governo, empresários esociedade civil tem se reunido desde o início da década de 1990 para proporpolíticas de recuperação do Centro e, dessa forma, atrair investidores. Os projetosse interessam pela melhoria do espaço público e refletem tendências globais, porisso se baseiam numa aproximação entre o setor público e o privado mediante oestabelecimento de parcerias, asseguradas por mecanismos jurídicos. O objetivodeste artigo é analisar propostas de requalificação do bairro central. Assim,investigações em jornais, revisão bibliográfica e análise dos discursos proferidosno Fórum Viva Centro foram utilizados como instrumentos de pesquisa. Aconclusão foi que os planos de renovação combinam estratégias imobiliárias comcircuitos de valorização nas suas novas frentes de expansão.

  3. Centro Direzionale of Naples. A “Smart” Concept

    Directory of Open Access Journals (Sweden)

    Fabrizio Canfora

    2014-11-01

    Full Text Available The topic of urban planning linked to the growth of smart cities is now quite common also in the urban-sociological debate. Recent studies (Besselaar, Koizumi, 2005; Fistola, 2010 identify the main focus of the smart city no longer exclusively in the strategic role played by ICT infrastructures, but above all in the factors enabling urban growth, defined as the ability to stimulate innovative urban developments, along with an increasing attention to the environment, eco-design, improved living levels, as well as the "bio-socio-environmental capital" (Corbisiero, 2013. Based on this theoretical background, the paper highlights the results of a research conducted in Naples on the empirical case of the "Centro Direzionale". It is an intervention of urban design of considerable impact on the city. The design and construction of the Centro Direzionale of Naples is, in fact, an archetype of the smart city; a primal testing of "urban intelligence" in terms of transport systems, infrastructure, logistics, systems for energy efficiency and technology. More generally, a good practice of city administration and of exploitation of strategic spatial planning.

  4. Centro municipal de vehículos Ginebra-Suiza

    Directory of Open Access Journals (Sweden)

    Dom, Jean Pierre

    1969-06-01

    Full Text Available This station comprises three buildings, which house, respectively, the offices and auxiliary services of the station, the vehicles depot, and the mechanical repair works, stores and inspection of vehicles. The whole project has been designed in accordance with a module of 5.875 m length. The external elevations of this significant project express clearly its robust, sober and industrially functional nature.El conjunto erigido comprende tres edificios destinados, respectivamente, a albergar: «las dependencias de la administración», y «locales de servicio del Centro»; «el depósito de vehículos»; y «la inspección de vehículos», «repuestos» y «talleres mecánicos». Todos ellos modulados según un módulo de 5,875 m de lado. Desde el punto de vista de composición arquitectónica, este Centro refleja claramente, en los alzados exteriores, su carácter de construcción industrial sobria y robusta.

  5. Estrategias gerenciales administrativas para Centros Médicos Privados

    Directory of Open Access Journals (Sweden)

    Thaide Torres Guerra

    2013-01-01

    Full Text Available El problema abordado en este artículo plantea la necesidad de nuevas estrategias gerenciales administrativas para los Centros Médicos Privados de la Parroquia Raúl Leoni del Municipio Maracaibo, con el fin de identificar las fallas, para la mejora del desempeño gerencial. La metodología corresponde a un estudio descriptivo, pues contextualiza el desempeño gerencial administrativo actual en cuanto a las funciones en los centros seleccionados, identificando métodos y test que sirvan para su medición en aspectos relevantes de la planificación, organización, dirección y control. Finalmente se concluye que la estructura organizacional y la caracterización del enfoque confirma con los resultados que el liderazgo, la motivación, comunicación y toma de decisiones, son medianamente efectivas, siendo una debilidad para alcanzar la integración y unificación de los equipos de trabajo y de todos sus miembros que hacen vida en la institución.

  6. Glioblastoma with spinal seeding

    International Nuclear Information System (INIS)

    Fakhrai, N.; Fazeny-Doerner, B.; Marosi, C.; Czech, T.; Diekmann, K.; Birner, P.; Hainfellner, J.A.; Prayer, D.

    2004-01-01

    Background: extracranial seeding of glioblastoma multiforme (GBM) is very rare and its development depends on several factors. This case report describes two patients suffering from GBM with spinal seeding. In both cases, the anatomic localization of the primary tumor close to the cerebrospinal fluid (CSF) was the main factor for spinal seeding. Case reports: two patients with GBM and spinal seeding are presented. After diagnosis of spinal seeding, both patients were highly symptomatic from their spinal lesions. Case 1 experienced severe pain requiring opiates, and case 2 had paresis of lower limbs as well as urinary retention/incontinence. Both patients were treated with spinal radiation therapy. Nevertheless, they died 3 months after diagnosis of spinal seeding. Results: in both patients the diagnosis of spinal seeding was made at the time of cranial recurrence. Both tumors showed close contact to the CSF initially. Even though the patients underwent intensive treatment, it was not possible to keep them in a symptom-free state. Conclusion: because of short survival periods, patients deserve optimal pain management and dedicated palliative care. (orig.)

  7. Glioblastoma with spinal seeding

    Energy Technology Data Exchange (ETDEWEB)

    Fakhrai, N.; Fazeny-Doerner, B.; Marosi, C. [Clinical Div. of Oncology, Dept. of Medicine I, Univ. of Vienna (Austria); Czech, T. [Dept. of Neurosurgery, Univ. of Vienna (Austria); Diekmann, K. [Dept. of Radiooncology, Univ. of Vienna (Austria); Birner, P.; Hainfellner, J.A. [Clinical Inst. for Neurology, Univ. of Vienna (Austria); Prayer, D. [Dept. of Neuroradiology, Univ. of Vienna (Austria)

    2004-07-01

    Background: extracranial seeding of glioblastoma multiforme (GBM) is very rare and its development depends on several factors. This case report describes two patients suffering from GBM with spinal seeding. In both cases, the anatomic localization of the primary tumor close to the cerebrospinal fluid (CSF) was the main factor for spinal seeding. Case reports: two patients with GBM and spinal seeding are presented. After diagnosis of spinal seeding, both patients were highly symptomatic from their spinal lesions. Case 1 experienced severe pain requiring opiates, and case 2 had paresis of lower limbs as well as urinary retention/incontinence. Both patients were treated with spinal radiation therapy. Nevertheless, they died 3 months after diagnosis of spinal seeding. Results: in both patients the diagnosis of spinal seeding was made at the time of cranial recurrence. Both tumors showed close contact to the CSF initially. Even though the patients underwent intensive treatment, it was not possible to keep them in a symptom-free state. Conclusion: because of short survival periods, patients deserve optimal pain management and dedicated palliative care. (orig.)

  8. Physalis peruviana seed storage

    Directory of Open Access Journals (Sweden)

    Cíntia L. M. de Souza

    2016-03-01

    Full Text Available ABSTRACT Physalis peruviana belongs to Solanaceae family and has a high nutritional and nutraceutical potential. The production is intended for fruit consumption and the propagation is mainly by seeds. This study aimed to evaluate the influence of priming on the kinetics of germination of P. peruviana seeds stored at different temperatures. The seeds were stored at 5 and 25 °C in a chamber saturated with zinc chloride solution and in liquid nitrogen (-196 °C. Every 4 months, the seeds were removed from storage for evaluation of germination and moisture content in the laboratory and emergence and development of seedlings in greenhouse. During the last evaluation at 16 months, the seeds under the same conditions were subjected to salt stress. The moisture content varied during the storage period, but was always higher for seeds kept at -196 ºC. These seeds kept high germination percentage in water until 16 months, regardless of the tested temperature; however, in salt solution the germination percentage was significantly reduced.

  9. Effects of seed fermentation method on seed germination and vigor ...

    African Journals Online (AJOL)

    The present study was conducted to examine the influence of Lagenaria siceraria seed fermentation method on seed germination and vigor. Three seed fermentation methods (fermented in ambient air, plastic bag stored in ambient or in plastic bag buried) were tested on two cultivars during two years. Seed germination and ...

  10. Del gimnasio al ocio-salud Centros de Fitness, Fitness Center, Fitness & Wellness, Spa, Balnearios, Centros de Talasoterapia, Curhotel

    Directory of Open Access Journals (Sweden)

    Joaquín Reverter Masi

    2007-12-01

    Full Text Available Actualmente el sector “gimnasios y centros deportivos” se constituye como una parcela de gran importancia dentro del panorama de la industria del ocio. El auge creciente del sector ocio-salud se viene produciendo desde hace varias décadas, de modo que en la actualidad el ocio y tiempo de ocio, y ejercicio físico y deporte como ocio son predictores de calidad de vida. En este sentido es cuando podemos y debemos relacionar ocio con la calidad de vida, un concepto multidimensional que incluye todos los ámbitos de la vida humana (estado de la salud, bienestar, participación social, condiciones de vida.... En este trabajo se analiza como han ido evolucionado los centros dedicados a la practica deportiva y a la salud. Un sector que desde la antigüedad hasta nuestros días ha tenido que ir adaptando y ampliando su oferta de actividades y productos según las necesidades de los usuarios.

  11. ACTIVITATEA ANTIOXIDANTĂ A SUBSTANŢELOR DIN MUGURII ARBORILOR STEJARULUI PUFOS (QUERCUS PUBESCENS WILLD. CARE CRESC ÎN DIFERITE CONDIŢII STAŢIONALE

    Directory of Open Access Journals (Sweden)

    Gheorghe FLORENTA

    2018-03-01

    Full Text Available A fost determinată activitatea sumară a oxidazelor, catalazelor şi a substanţelor reducătoare a extractelor din mugurii stejarului pufos prelevaţi primăvara de la arborii care cresc în diferite condiţii staţionale din sudul Republicii Moldova. În extracte se manifesta clar tendinţa de sporire a capacităţii sumare de utilizare a oxigenului datorită potenţialului reductiv al substanţelor fenolice şi activităţii oxidazelor la arborii care cresc mai la sud, ceea ce corespunde gradientului de sporire a temperaturii primăvara în direcţia nord-sud. Această tendinţă s-a manifestat şi pentru activitatea catalazelor, dar mai puţin pronunţat. Primăvara, în celulele mugurilor apicali schimbările componentelor care determină potenţialul oxidoreductiv se manifestă mai timpuriu, în comparaţie cu cele din mugurii laterali. Această accelerare poate fi o cauză a eliminării mai timpurii a dormitării mugurilor apicali în comparaţie cu cei laterali.THE ANTIOXIDANT ACTIVITY OF PUBESCENT OAK TREE BUDS (QUERCUS PUBESCENS WILLD. WHICH GROW UNDER DIFFERENT STATIONARY CONDITIONSIt was determined the summary activity of oxidases, catalases and reducing substances of extracts from pubescent oak shoots taken in spring from trees growing in different stationary conditions in the southern part of the Republic of Moldova. In the extracts, the tendency to increase the overall capacity of oxygen use due to the reductive potential of the phenolic substances and the activity of the oxidases in trees growing southwards is clearly manifested, which corresponds to the gradient of increasing the spring temperature in the north-south direction. This trend also manifested itself in the catalase activity, but less pronounced. In apical buds, in spring, the changes in the components that determine the oxidoreductive potential are manifested earlier, compared to those in lateral buds. This acceleration may be a reason of the early removal of

  12. The development and work of the Centro de Energia Nuclear na Agricultura (CENA) in Piracicaba

    International Nuclear Information System (INIS)

    Cervellini, A.; Vose, P.B.

    1976-01-01

    CENA is organized in five major divisions: Plant Sciences (biochemistry, pathology, nutrition, radiogenetics and plant breeding, entomology). Animal Sciences, Soil Sciences (fertility, physics, chemistry, microbiology), Environmental Sciences (hydrology, stable isotopes), and Basic Sciences (analytical chemistry and radioprotection). The main projects are focussed on some of the greatest problems in Brazilian agriculture: water resources in Amazonia and the North East region; genetic improvement of basic crops such as beans, rice and wheat; methods for potential reduction in losses of stored grain; improved fertilizer practices and the biological fixation of nitrogen; protein quality and photosynthetic efficiency; mineral deficiency in livestock. In radiation mutation breeding, important successes have been achieved with beans (Phaseolus). Varieties are coming forward promising a yield potential substantially higher than existing varieties. Limited multiplication and testing should be possible later this year. Differences in protein content of several per cent have also been found. A mutant tolerant to Golden Mosaic disease has been obtained, and seed supplied to CIAT (Centro Internacional de Agriculture Tropical, Cali, Columbia) and five countries in South Central America. This was the result of screening some 750 M-progenies comprising 15000 plants in collaboration with the Virology Department of the Institute of Agronomy, Campinas. It should be seen in the perspective of 5000 lines from spontaneous collections having been tested in Central and South America without any tolerance being found. Limited mutation breeding with wheat and rice has produced wheat mutants more resistant to rust and also with shorter straw. Rice mutant lines maturing two weeks earlier and with shortened straw have been obtained

  13. Prosopis Africana SEEDS (OKPEYE)

    African Journals Online (AJOL)

    User

    Keywords: Prosopis africana, okpeye seeds, thermal heat conductivity, specific heat capacity, thermal heat diffusivity, .... 2.3 Determination of Thermal Properties of Prosopis. Africana .... and the guard ring was filled with fiber glass at both the.

  14. Oil seed marketing prospects

    International Nuclear Information System (INIS)

    Ceroni, G.

    1992-01-01

    With its 100 million tonnes annual production, the American continent is by far the world's biggest producer of oil seed, followed by Asia - 52 million, and Europe - 27 million tonnes. The Italian and European Communities have the farming capacity to double their production, but international agreements currently prohibit such initiatives. After first providing a panorama of the world oil seed market, this paper discusses new reforms in European Communities internal agricultural policies which currently limit production. These reforms, intended to encourage the production of oil seed for use as an ecological automotive fuel alternative, call for an obligatory set-aside of 15% of producing farm-land in exchange for the compensatory removal of oil seed production limits

  15. Genetics and Forest Seed Handling

    DEFF Research Database (Denmark)

    Schmidt, Lars Holger

    2016-01-01

    High genetic quality seed is obtained from seed sources that match the planting site, have a good outcrossing rate, and are superior in some desirable characters. Non-degraded natural forests and plantations may be used as untested seed sources, which can sometimes be managed to promote outbreeding...... and increase seed production. Planted seed orchards aim at capturing large genetic variation and are planted in a design that facilitates genetic evaluation and promotes outbred seed production. Good seed production relies upon success of the whole range of reproductive events from flower differentiation...

  16. Quality in research centers; Calidad en centros de investigacion

    Energy Technology Data Exchange (ETDEWEB)

    Colin Orozco, Leticia [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    2000-07-01

    In order to be able to survive and to have successful in the globalized market, all the organizations must make an effort in learning and understanding the language of the international trade, of the standards that govern it and the technical specifications that are handled for the quality assurance of products and services. In this paper the importance that the implementation of standards ISO-9000 in the research centers has, is presented. [Spanish] Para poder sobrevivir y tener exito en el mercado globalizado todas las organizaciones tienen que esforzarse en el aprendizaje y comprension del lenguaje del comercio internacional, de las normas que lo rigen y de las especificaciones tecnicas que se manejan para asegurar la calidad de los productos y servicios. En este articulo se presenta la importancia que tiene la implantacion de las normas ISO-9000 en los centros de investigacion.

  17. Seeds of impurity

    Directory of Open Access Journals (Sweden)

    Andrea Pavoni

    2015-06-01

    Full Text Available Ai Weiwei’s art installation Kui Hua Zi [Sunflower Seeds] took place between 2010 and 2011 in the gigantic Turbine Hall of the Tate Modern Gallery, in London. It consisted of 100 millions hand-crafted porcelain seeds made in Jingdezhen, China.1 An uneven surface to dive into, a haptic space of undulating vision, rustling steps, unusual horizontality, a meaningless quicksand where the separation between artwork and spectator is engulfed, the immunity of distant contemplation denied.

  18. Centro estudiantil de Dípoli, en Helsinki, Finlandia

    Directory of Open Access Journals (Sweden)

    Pietila, R.

    1969-05-01

    Full Text Available The Students Centre at Dipoli consists essentially of blocks which grew simultaneously, but independently, and when finally completed they became an integrated unit. This project is not a complete architectural design, but rather an attempt, an effort, in a given direction. It constitutes an experience that differs from the accepted and known rules on the composition of buildings. The built up area is 10.500 m2, of which 3.855 m2 is devoted to restaurants. To meet its intended purpose, this rest centre was planned so that its indoor environment should differ from that of a school, providing the students with a strong contrast to the highly specific training that they normally receive. At this centre there is opportunity tor meetings and group activities, and also facilities for rest and relaxation. There are also rooms for games, and for amusement.El Centro Estudiantil de Dípoli consta, en esencia, de cuerpos de edificio que crecieron juntos pero independientes y que cuando estuvieron terminados constituyeron un todo; no es una obra arquitectónica completa, sino más bien un intento, una dirección; es una experiencia que se aparta de las reglas ya conocidas y aceptadas de composición. El edificio presenta en planta una superficie útil de 10.500 m2, de los que 3.855 m2 están dedicados a restaurantes. Para cumplir su cometido como Centro de descanso fue creado con un ambiente interior diferente al de la escuela, a fin de que sirviera a los estudiantes como un fuerte contrapeso de la formación eminentemente específica que reciben en la escuela; en él tienen lugar reuniones y funciones para grandes grupos; posibilita el descanso y reposo individual; dispone de salas de juego, de entretenimiento, etcétera.

  19. Sede de organizaciones internacionales y centro de conferencias, Viena - Austria

    Directory of Open Access Journals (Sweden)

    Staber, Johann

    1979-11-01

    Full Text Available This complex on one bank of the Danube, is located between Wagramer Street and the Danube Park, a beautiful area overlooking the City and surrounded by greenery. It includes: — Six Y-shaped buildings, four of them housing the administrative centers of two international organizations AIEA and UNODI and the other two used for common services. — One circular building used for international congresses. — One hexagon congress hall attached to a circular hotel building. In addition, the complex includes a multilevel car park, elevated pedestrian walks, two access plazas and full network of roads at different levels. The congress centre is the most essential element of the complex and, similarly as the circular international congress hall was designed with flexibility in mind, permitting a number of different floor arrangements using movable partitions.

    Este complejo, construido a orillas del Danubio, está situado entre la calle Wagramer y el parque del Danubio, en una zona de gran belleza, con magnificas vistas de la ciudad y con amplias zonas verdes. Consta de: —Seis edificios con plantas en forma de Y, cuatro de ellos utilizados para sedes administrativas de las Organizaciones Internacionales AIEA y UNODI, y los otros dos para servicios comunes. —Un edificio de planta circular destinado a Conferencias Internacionales. —Un Centro de Conferencias de planta hexagonal, adosado a un hotel de planta circular. El conjunto se completa con estacionamientos de varias plantas, pasarelas para peatones, dos plazas de acceso y un completo trazado viario con calles a distintos niveles. El Centro de Conferencias es la parte esencial del complejo y, al igual que el edificio circular para Conferencias Internacionales, admite distintas variantes en la distribución del espacio para salas mediante la utilización de tabiques móviles de separación.

  20. Storage of sunflower seeds

    Directory of Open Access Journals (Sweden)

    Denise de Castro Lima

    Full Text Available The sunflower is among the top five crops in the world for the production of edible vegetable oil. The species displays rustic behavior, with an excellent edaphic and climatic adaptability index, being able to be cultivated throughout Brazil. Seed quality is the key to increasing production and productivity in the sunflower. The objective of this work was to monitor the viability of sunflower seeds with a view to their conservation when stored in different environments and packaging. The seeds were packed in paper bags, multilayered paper, black polyethylene and PET bottles; and stored for a period of twelve months in the following environments: dry cold room (10 ºC and 55% RH, the ambient conditions of Fortaleza, Ceará, Brazil (30-32 ºC and 75% RH, refrigerator (4 ºC and 38-43% RH and freezer (-20 ºC. Every three months, the water content of the seeds was determined and germination, accelerated ageing, speed of emergence index, and seedling dry weight were evaluated. The experimental design was completely randomized, in a scheme of split-lots, with four replications. It can be concluded that the natural environment is not suitable for the storage of sunflower seeds. Sunflower seeds remain viable for 12 months when stored in a dry cold room, refrigerator or freezer, irrespective of the type of packaging used.

  1. Seed dispersal in fens

    Science.gov (United States)

    Middleton, B.; Van Diggelen, R.; Jensen, K.

    2006-01-01

    Question: How does seed dispersal reduce fen isolation and contribute to biodiversity? Location: European and North American fens. Methods: This paper reviews the literature on seed dispersal to fens. Results: Landscape fragmentation may reduce dispersal opportunities thereby isolating fens and reducing genetic exchange. Species in fragmented wetlands may have lower reproductive success, which can lead to biodiversity loss. While fens may have always been relatively isolated from each other, they have become increasingly fragmented in modern times within agricultural and urban landscapes in both Europe and North America. Dispersal by water, animals and wind has been hampered by changes related to development in landscapes surrounding fens. Because the seeds of certain species are long-lived in the seed bank, frequent episodes of dispersal are not always necessary to maintain the biodiversity of fens. However, of particular concern to restoration is that some dominant species, such as the tussock sedge Carex stricta, may not disperse readily between fens. Conclusions: Knowledge of seed dispersal can be used to maintain and restore the biodiversity of fens in fragmented landscapes. Given that development has fragmented landscapes and that this situation is not likely to change, the dispersal of seeds might be enhanced by moving hay or cattle from fens to damaged sites, or by reestablishing lost hydrological connections. ?? IAVS; Opulus Press.

  2. Calidad percibida por dos poblaciones adscritas a dos centros de salud de la provincia de Cuenca

    Directory of Open Access Journals (Sweden)

    Retamal González Antonio

    2000-01-01

    Full Text Available FUNDAMENTO: Para prestar un servicio de calidad es fundamental conocer la opinión que sobre la misma tienen los usuarios del mismo. El objetivo del presente trabajo es medir y comparar la calidad percibida por dos poblaciones asignadas a dos centros de salud de la provincia de Cuenca. MÉTODO: Se trata de un estudio descriptivo transversal. Las Zonas Básicas de Salud estudiadas han sido el Centro de Salud de Cardenete y Centro de Salud de Motilla del Palancar, ambos del Área de Salud de Cuenca. Se ha hecho un muestreo aleatorio estratificado por cuotas de edad y sexo a partir de la tarjeta sanitaria individual. Se ha medido la calidad percibida con un cuestionario validado y fiable, utilizado anteriormente con fines similares por el Ministerio de Sanidad y Consumo. RESULTADOS: Se analizan un total de 295 encuestas, 147 a varones y 148 a mujeres. La media de edad es de 48,83 años (DE: 18,77 para el Centro de Salud de Motilla, en Centro de Salud de Cardenete es de 61,93 años (DE: 15,17. La media de frecuencias mensuales de visitas para Centro de Salud de MP ha sido de 1,56 (DE: 1,91; esta media para el Centro de Salud de Cardenete ha sido:2,49 (DE: 4,27. La media de frecuencias semanales para el Centro de Salud de MP ha sido: 0,32 (DE: 0,66; para el Centro de Salud de Cardenete ha sido: 0,49 (DE: 1,03. El tiempo de espera en el Centro de Salud de MP ha sido: 10,86 minutos (DE: 8,27; en el Centro de Salud de Cardenete: 7,88 (DE: 4,55. 83,4 % de los usuarios de los dos Centros de Salud de conocen la posibilidad de libre elección de médico de cabecera. Se han encontrado diferencias estadísticamente significativas en 11 de los 21 ítems estudiados sobre calidad percibida de que consta el cuestionario CONCLUSIÓN. Los resultados de los componentes de la atención según el análisis factorial de los ítems de calidad percibida son coincidentes con los resultados de calidad percibida. De los dos grupos de usuarios estudiados, los que perciben

  3. The distribution systems of the Luz y Fuerza del Centro; Sistemas de distribucion en Luz y Fuerza del Centro

    Energy Technology Data Exchange (ETDEWEB)

    Espinosa y Lara, Roberto [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    In this document are described the distribution systems that have been utilized in Mexico, to satisfy the electric energy demand. Mention is made of the areas of influence these systems have, its structure, the electric infrastructure that Luz y Fuerza del Centro has to satisfy the demand and in this way be in position of planning the distribution networks. As in other activities the aspects related to the protection of the environment exert a growing influence on the development of the energy sector, for this reason three themes are mentioned to which special attention must be paid. A table is shown with the per capita consumption, another one with the number of transformers and its capacity. Also the underground networks in operation and under construction are shown and a flow diagram of the distribution system planning [Espanol] En este documento se describen los sistemas de distribucion que se han realizado en Mexico, para satisfacer la demanda electrica, se mencionan las areas de influencia que tienen estos sistemas, su estructuracion, la infraestructura electrica con la que cuenta Luz y Fuerza del Centro para satisfacer las demandas y asi poder planear las redes de distribucion. Como en otras actividades, los aspectos relacionados con el cuidado del ambiente ejercen una influencia creciente sobre el desenvolvimiento del sector de energia, es por eso que se mencionan tres temas a los que se les debe de poner especial atencion. Se muestra una tabla de consumo per capita, otra del numero de transformadores y su capacidad. Tambien se ilustran las redes subterraneas en operacion y construccion y un flujograma de planeacion del sistema de distribucion

  4. Seed-borne pathogens and electrical conductivity of soybean seeds

    Directory of Open Access Journals (Sweden)

    Adriana Luiza Wain-Tassi

    2012-02-01

    Full Text Available Adequate procedures to evaluate seed vigor are important. Regarding the electrical conductivity test (EC, the interference in the test results caused by seed-borne pathogens has not been clarified. This research was carried out to study the influence of Phomopsis sojae (Leh. and Colletotrichum dematium (Pers. ex Fr. Grove var. truncata (Schw. Arx. fungi on EC results. Soybean seeds (Glycine max L. were inoculated with those fungi using potato, agar and dextrose (PDA medium with manitol (-1.0 MPa and incubated for 20 h at 25 °C. The colony diameter, index of mycelial growth, seed water content, occurrence of seed-borne pathogens, physiological potential of the seeds, measured by germination and vigor tests (seed germination index, cold test, accelerated aging and electrical conductivity, and seedling field emergence were determined. The contents of K+, Ca2+, and Mg2+ in the seed and in the soaking solution were also determined. A complete 2 × 4 factorial design with two seed sizes (5.5 and 6.5 mm and four treatments (control, seeds incubated without fungi, seeds incubated with Phomopsis and seeds incubated with Colletotrichum were used with eight (5.5 mm large seeds and six (6.5 mm large seeds replications. All seeds submitted to PDA medium had their germination reduced in comparison to the control seeds. This reduction was also observed when seed vigor and leached ions were considered. The presence of Phomopsis sojae fungus in soybean seed samples submitted to the EC test may be the cause of misleading results.

  5. The importance of using certified seed

    OpenAIRE

    Bogdanović Sandra; Mladenov Velimir; Balešević-Tubić Svetlana

    2015-01-01

    Certified seed is produced from the seed of known genetic origin and genetic purity with controlled and tested production, processed and declared in accordance with the Law on Seeds. Production of certified seed is carried out under the supervision of the Ministry of Agriculture and Environmental Protection, by seed producers formally listed in the Seed Register. Seed is processed in registered seed processing centres and quality is tested in laboratories accredited for seed testing. The orga...

  6. La educabilidad: atributo mediacional entre la realidad curricular y organizativa del centro escolar

    Directory of Open Access Journals (Sweden)

    Miguel PÉREZ FERRA

    2009-11-01

    Full Text Available Es evidente, que la actividad de los centros educativos necesita para alcanzar las finalidades que justifican su existencia y trabajo, ser planificada, ordenada, programada, desarrollada y evaluada. Toda esta labor se sintetiza y recoge en el Proyecto de Centro, instrumento de planificación a medio plazo, que concreta y desarrolla los elementos que lo integran: Finalidades educativas, Proyecto curricular de Centro y Reglamento de Organización y Funcionamiento. En este artículo realizamos una reflexión sobre la conveniencia, posibilidad y realidad de utilización con carácter orgánico de dos documentos esenciales en el Proyecto de Centro. Nos referimos al Proyecto Curricular de Centro y al Reglamento de Organización y Funcionamiento. El estudio integra tres perspectivas complementarias: la realidad ontológica o conveniencia de dicha relación que intentamos justificar desde el atributo educabilidad, propio del hombre, nexo de unión entre la esencia de los dos documentos; la realidad histórica de los últimos cincuenta años y su incidencia en la relación organizativo-curricular de los centros; por último, valoramos la trayectoria lineal de la formación del profesorado en España y sus respuestas al centro como unidad organizativa, profesional y curricular.

  7. Magnetic-seeding filtration

    International Nuclear Information System (INIS)

    Ying, T.Y.; Chin, C.J.; Lu, S.C.; Yiacoumi, S.

    1997-10-01

    Magnetic-seeding filtration consists of two steps: heterogeneous particle flocculation of magnetic and nonmagnetic particles in a stirred tank and high-gradient magnetic filtration (HGMF). The effects of various parameters affecting magnetic-seeding filtration (HGMF). The effects of various parameters affecting magnetic seeding filtration are theoretically and experimentally investigated. A trajectory model that includes hydrodynamic resistance, van der Waals, and electrostatic forces is developed to calculate the flocculation frequency in a turbulent-shear regime. Fractal dimension is introduced to simulate the open structure of aggregates. A magnetic-filtration model that consists of trajectory analysis, a particle build-up model, a breakthrough model, and a bivariate population-balance model is developed to predict the breakthrough curve of magnetic-seeding filtration. A good agreement between modeling results and experimental data is obtained. The results show that the model developed in this study can be used to predict the performance of magnetic-seeding filtration without using empirical coefficients or fitting parameters. 35 refs., 7 figs., 1 tab

  8. Molecular physiology of seeds

    International Nuclear Information System (INIS)

    Hajduch, M.

    2014-05-01

    Plant development is well described. However, full understanding of the regulation of processes associated with plant development is still missing. Present Dr.Sc. thesis advances our understanding of the regulation of plant development by quantitative proteomics analyses of seed development of soybean, canola, castor, flax, and model plant arabidopsis in control and environmentally challenged environments. The analysis of greenhouse-grown soybean, canola, castor, and arabidospis provided complex characterization of metabolic processes during seed development, for instance, of carbon assimilation into fatty acids. Furthermore, the analyses of soybean and flax grown in Chernobyl area provided in-depth characterization of seed development in radio-contaminated environment. Soybean and flax were altered by radio-contaminated environment in different way. However, these alterations resulted into modifications in seed oil content. Further analyses showed that soybean and flax possess alterations of carbon metabolism in cytoplasm and plastids along with increased activity of photosynthetic apparatus. Our present experiments are focused on further characterization of molecular bases that might be responsible for alterations of seed oil content in Chernobyl grown plants. (author)

  9. Deshidratación osmótica de la papaya chilena (Vasconcellea pubescens) e influencia de la temperatura y concentración de la solución sobre la cinética de transferencia de materia

    OpenAIRE

    Vega-Gálvez,Antonio; Palacios,Marlene; Boglio,Francisca; Pássaro,Catarina; Jeréz,Catalina; Lemus-Mondaca,Roberto

    2007-01-01

    El objetivo de este trabajo fue estudiar la cinética de deshidratación osmótica de la papaya chilena (Vasconcellea pubescens), utilizando dos variables experimentales: la temperatura (30, 40, 50 °C) y concentración (40, 50 y 60%) de la solución osmótica. Se determinó la variación de masa total, masa de agua y masa de sólidos solubles y se modeló con las ecuaciones difusionales, además en esta investigación se consideró y utilizó una modificación de la ecuación propuesta por Biswal-Bozorgmehr....

  10. 7 CFR 201.33 - Seed in bulk or large quantities; seed for cleaning or processing.

    Science.gov (United States)

    2010-01-01

    ... quantities; seed for cleaning or processing. (a) In the case of seed in bulk, the information required under... seeds. (b) Seed consigned to a seed cleaning or processing establishment, for cleaning or processing for... pertaining to such seed show that it is “Seed for processing,” or, if the seed is in containers and in...

  11. Centro Princesa, en Madrid (España

    Directory of Open Access Journals (Sweden)

    Lamela, A.

    1968-12-01

    Full Text Available This is a luxury commercial centre, in the very centre of Madrid, and within a high class residential zone. It occupies a whole block, facing four streets, and it includes a luxury hotel, apartments, shopping facilities, offices, car park, and the official headquarters of one of the most important Spanish travelling agencies. The outstanding feature of the «Centro Princesa» is the luxury hotel, which has 250 rooms, suits, social rooms, conventions halls, dance hall, bar, hairdressers saloon, sauna bath, shopping centre, restaurants and secondary services. The luxury flats occupy seven storeys of the central block, 15 apartments per story. Each of these has a sitting room, bedroom, bathroom and kitchen. The carpark, which can hold 300 cars, occupies four underground floor levels. This project is attractive because of its balanced spatial pattern, its clean outline and the quality of the materials, whilst the excellence of its internal appointment also contributes to its overall architectural merit.Este conjunto, situado en una zona residencial de primera categoría, está destinado a: hotel de lujo, apartamentos, locales comerciales, oficinas, aparcamientos de automóviles y a sede de la oficina-despacho central de una de las más importantes agencias de viaje españolas. Ocupa una manzana entera. La unidad predominante del «Centro Princesa» es un hotel de lujo, con 250 habitaciones, «suits», salones sociales, de actos y convenciones, sala de fiestas, bar americano, peluquerías, saunas, galería comercial, restaurantes y dependencias de servicio. Siete plantas del bloque central albergan los apartamentos de lujo, 15 por planta; el apartamento tipo consta de salón, cocina, dormitorio y baño. En cuatro de las plantas de sótano funciona un aparcamiento con capacidad para 300 automóviles. Atrae este conjunto, tanto por el acertado juego de volúmenes, y la limpieza de líneas y materiales —que muestra su composición estética—, como

  12. Improving Soil Seed Bank Management.

    Science.gov (United States)

    Haring, Steven C; Flessner, Michael L

    2018-05-08

    Problems associated with simplified weed management motivate efforts for diversification. Integrated weed management uses fundamentals of weed biology and applied ecology to provide a framework for diversified weed management programs; the soil seed bank comprises a necessary part of this framework. By targeting seeds, growers can inhibit the propagule pressure on which annual weeds depend for agricultural invasion. Some current management practices affect weed seed banks, such as crop rotation and tillage, but these tools are often used without specific intention to manage weed seeds. Difficulties quantifying the weed seed bank, understanding seed bank phenology, and linking seed banks to emerged weed communities challenge existing soil seed bank management practices. Improved seed bank quantification methods could include DNA profiling of the soil seed bank, mark and recapture, or 3D LIDAR mapping. Successful and sustainable soil seed bank management must constrain functionally diverse and changing weed communities. Harvest weed seed controls represent a step forward, but over-reliance on this singular technique could make it short-lived. Researchers must explore tools inspired by other pest management disciplines, such as gene drives or habitat modification for predatory organisms. Future weed seed bank management will combine multiple complementary practices that enhance diverse agroecosystems. This article is protected by copyright. All rights reserved.

  13. Seeds of confusion : the impact of policies on seed systems

    OpenAIRE

    Louwaars, N.P.

    2007-01-01

    Seed is basic to crop production. Next to its importance in production, food security and rural development, seed is a key element in many debates about technology development and transfer, biodiversity, globalisation and equity. The sustainable availability of good quality seed is thus an important development issue. This study deals with the impact different types of regulation have on how farmers access seed. I have analysed current regulatory frameworks in terms of their impact on differe...

  14. Magnetic-seeding filtration

    International Nuclear Information System (INIS)

    Depaoli, D.

    1996-01-01

    This task will investigate the capabilities of magnetic-seeding filtration for the enhanced removal of magnetic and nonmagnetic particulates from liquids. This technology appies to a wide range of liquid wastes, including groundwater, process waters, and tank supernatant. Magnetic-seeding filtration can be used in several aspects of treatment, such as (1) removal of solids, particularly those in the colloidal-size range that are difficult to remove by conventional means; (2) removal of contaminants by precipitation processes; and (3) removal of contaminants by sorption processes

  15. genetics and inheritance of seed dormancy inflicted by seed

    African Journals Online (AJOL)

    Mgina

    ABSTRACT. The study was undertaken to investigate the genetic mode of inheritance of dormancy imposed by the hull (seed coat) in rice seeds. Freshly harvested seeds of parents, F1 and F2 populations of a cross between a dormant cultivar Kisegese and non-dormant strain K2004 were used. Germination test of the ...

  16. Seeds of confusion : the impact of policies on seed systems

    NARCIS (Netherlands)

    Louwaars, N.P.

    2007-01-01

    Seed is basic to crop production. Next to its importance in production, food security and rural development, seed is a key element in many debates about technology development and transfer, biodiversity, globalisation and equity. The sustainable availability of good quality seed is thus an important

  17. Effects of seed collecting date and storage duration on seed ...

    African Journals Online (AJOL)

    The objective of this study was to determine the effect of seed collecting dates (5 to 6 times from mid-November to early January, 10 days intervals) and seed storage duration (4, 8, and 12 months) at room temperature on seed germination of four Artemisia species (Artemisia sieberi, A. diffusa, A. kupetdaghensis, and A.

  18. Cone and seed yields in white spruce seed production areas

    Science.gov (United States)

    John A. Pitcher

    1966-01-01

    The source of seed is an important consideration in the reforestation program on the National Forests in the North Central Region. Thirty-five seed production areas have been set up in the Region, along the lines proposed by the North Central Forest Experiment Station, to provide control of seed source. Red pine, white pine, shortleaf and loblolly pine, and white...

  19. PIXE facility at Centro Atómico Bariloche

    Energy Technology Data Exchange (ETDEWEB)

    Limandri, S. [Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina (CONICET) (Argentina); Olivares, C. [Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. E. Bustillo 9500, San Carlos de Bariloche, Río Negro (Argentina); Rodriguez, L. [Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina (CONICET) (Argentina); Bernardi, G. [Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina (CONICET) (Argentina); Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. E. Bustillo 9500, San Carlos de Bariloche, Río Negro (Argentina); Suárez, S., E-mail: suarez@cab.cnea.gov.ar [Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina (CONICET) (Argentina); Instituto Balseiro, Universidad Nacional de Cuyo, Av. E. Bustillo 9500, San Carlos de Bariloche, Río Negro (Argentina)

    2014-01-01

    A 1.7 MeV tandem accelerator has been recently installed at Centro Atómico Bariloche, Argentina. This communication includes a brief description of the system facility with the main associated equipment, in particular that used for PIXE measurements. The X-ray detector efficiency was experimentally determined by comparing X-ray characteristic spectra with theoretical predictions. The knowledge of this parameter allows us to perform quantification without standards with good precision. We show some recent applications of PIXE in archaeology and forensic science done at our laboratory. In the archaeological field we determined elements constituent of pastes and black, white, brown and ocher pigments from Aguada Portezuelo Culture (600–900 AD). This study allowed us to infer about the presence of psilomelante mineral (a mineral with barium) as precursor of some black pigments. In the forensic field we determined trace elements that are present in seven gunpowders commonly used in Argentina. We note that any gunpowder can be distinguished by the presence of trace elements.

  20. Centro de conciertos y congresos – Helsinki (Finlandia

    Directory of Open Access Journals (Sweden)

    Aalto, Alvar

    1974-02-01

    Full Text Available The so-called «Finlandia Palace », intended to house congresses, exhibitions, conferences, concerts and similar events, is located at less than a kilometre from the Town Centre of the Finnish capital and forms part of a complex urbanistic plan-projected by Alvar Aalto several years ago, and which was much discussed at the time. The building has four storeys, and has two halls: one with 1,750 seats, and another, smaller, for 350 places. Furthermore, there are all kinds of auxiliary installations: simultaneous translation, post office, interpreters, testing rooms, restaurants, cafeterias, cloak-rooms, etc., and it is equipped with the latest advances regarding conditioning and insulation.El denominado «Finlandia Palace», destinado a albergar congresos, exposiciones, conferencias, conciertos y manifestaciones similares, está situado a menos de 1 km del Centro cívico de la capital finlandesa y forma parte de un plan urbanístico complejo, proyectado por Alvar Aalto hace unos años, que fue muy comentado y discutido. El edificio consta de cuatro plantas y contiene dos salas: una capaz para 1.750 asientos, y otra, más pequeña, para 350 plazas. Además dispone de toda suerte de instalaciones auxiliares: traducción simultánea, correos, intérpretes, salas de ensayos, restaurantes, cafeterías, vestuarios, etc., y cuenta con los últimos adelantos en materia de acondicionamientos y aislamientos.

  1. Responsabilidad Social Empresarial. Caso Centro Comercial Lago Mall

    Directory of Open Access Journals (Sweden)

    Carlos E. Torres Geisse

    2011-01-01

    Full Text Available El objetivo del artículo es el análisis de la responsabilidad empresarial para el centro comercial Lago Mall. El tipo de investigación fue un proyecto factible, descriptivo y de campo, con un diseño de tipo no experimental y transeccional. Se consideró como población al gerente de mercadeo del C.C Lago Mall, a quince (15 miembros de la comunidad interna, y a noventa (90 miembros de la comunidad externa del mismo. Las técnicas de recolección de datos aplicadas fueron: la encuesta y la entrevista. Los instrumentos fueron validados por cinco (5 expertos en gerencia social, obteniendo una confiabilidad de 0,99. Los resultados indican que en ambas dimensiones de la RSE los elementos que la integran no constituían un marco ideal para considerar a la empresa C.C. Lago Mall como socialmente responsable. Se concluye que el mismo carece de programas formales de responsabilidad social empresarial; sin embargo demuestra un compromiso con los principios de la empresa y con los valores de los empleados, donde se destacan la dignidad, identidad e integridad por los grupos de interés que se han denominado internos y externos.

  2. seed germination and seedlings growth

    African Journals Online (AJOL)

    STORAGESEVER

    2007-12-17

    Dec 17, 2007 ... The role of 20E in plant physiology including seed germination is not studied. ..... GA3, ABA and CKs on lettuce Lactuca sativa seed germination are ..... Practical uses for ecdysteroids in mammals and humans: an update. J.

  3. Gestión documental para un centro de valoración de la dependencia

    OpenAIRE

    Diego Regidor, Raúl

    2012-01-01

    Gestión documental para un centro de valoración de la dependencia. Desarrollo del software que permite gestionar toda la documentación que el Centre de Vida Independent emplea en sus procesos de negocio.

  4. Seed research for improved technologies

    OpenAIRE

    Bino,R.J.; Jalink,H.; Oluoch,M.O.; Groot,S.P.C.

    1998-01-01

    The production of high-quality seed is the basis for a durable a profitable agriculture. After production, seed is processed, conditioned, stored, shipped and germinated. For quality assurance, seed quality has to be controlled at all steps of the production chain. Seed functioning is accompanied by programmed transitions from cell proliferation to quiescence upon maturation and from quiescence to reinitiation of cellular metabolism upon imbibition. Despite the obvious importance of these con...

  5. (Lupinus albus) SEEDS

    African Journals Online (AJOL)

    user

    2010-08-08

    Aug 8, 2010 ... lupin samples indicated that lupins can be used as a raw material for various food ... lupin seeds can be utilized for milk and meat imitation products. ... estimated by multiplying the percentage of crude protein, crude fat and ...

  6. Seed for change

    NARCIS (Netherlands)

    Hassena Beko, Mohammed

    2017-01-01

    Ethiopia is an agrarian country where agriculture dominates the economy, and thus agriculture is considered as an engine of growth by the government. Seed as one of the agricultural technologies, in fact, a carrier of many technologies, is critical to increasing production, but the use of quality

  7. Managing Stress. Project Seed.

    Science.gov (United States)

    Muto, Donna; Wilk, Jan

    One of eight papers from Project Seed, this paper describes a stress management project undertaken with high school sophomores. Managing Stress is described as an interactive workshop that offers young people an opportunity to examine specific areas of stress in their lives and to learn effective ways to deal with them. The program described…

  8. Grape Seed Extract

    Science.gov (United States)

    ... Greece people have used grapes, grape leaves, and sap for health purposes. Grape seed extract was developed ... sharing research results, and educating the public. Its resources include publications (such as Dietary ... Department of Health & Human Services, National Institutes of Health, National Center for ...

  9. The SEED Initiative

    Science.gov (United States)

    Teich, Carolyn R.

    2011-01-01

    Committed to fulfilling the promise of the green economy, the American Association of Community Colleges (AACC) launched the Sustainability Education and Economic Development (SEED) initiative (www.theseedcenter.org) in October 2010. The project advances sustainability and clean energy workforce development practices at community colleges by…

  10. Dormancy in Plant Seeds

    NARCIS (Netherlands)

    Hilhorst, H.W.M.; Finch-Savage, W.E.; Buitink, J.; Bolingue, W.; Leubner-Metzger, G.

    2010-01-01

    Seed dormancy has been studied intensely over the past decades and, at present, knowledge of this plant trait is at the forefront of plant biology. The main model species is Arabidopsis thaliana, an annual weed, possessing nondeep physiological dormancy. This overview presents the state-of-the-art

  11. Magnetic-seeding filtration

    Energy Technology Data Exchange (ETDEWEB)

    DePaoli, D.W.; Tsouris, C. [Oak Ridge National Lab., TN (United States); Yiacoumi, Sotira

    1997-10-01

    Magnetic-seeding filtration is a technology under development for the enhanced removal of magnetic and non-magnetic particulates from liquids. This process involves the addition of a small amount of magnetic seed particles (such as naturally occurring iron oxide) to a waste suspension, followed by treatment with a magnetic filter. Non-magnetic and weakly magnetic particles are made to undergo nonhomogeneous flocculation with the seed particles, forming flocs of high magnetic susceptibility that are readily removed by a conventional high-gradient magnetic filter. This technology is applicable to a wide range of liquid wastes, including groundwater, process waters, and tank supernatants. Magnetic-seeding filtration may be used in several aspects of treatment, such as (1) removal of solids, particularly those in the colloidal size range that are difficult to remove by conventional means; (2) removal of contaminants by precipitation processes; and (3) removal of contaminants by sorption processes. Waste stream characteristics for which the technology may be applicable include (1) particle sizes ranging from relatively coarse (several microns) to colloidal particles, (2) high or low radiation levels, (3) broad-ranging flow rates, (4) low to moderate solids concentration, (5) cases requiring high decontamination factors, and (6) aqueous or non-aqueous liquids. At this point, the technology is at the bench-scale stage of development; laboratory studies and fundamental modeling are currently being employed to determine the capabilities of the process.

  12. Magnetic-seeding filtration

    International Nuclear Information System (INIS)

    DePaoli, D.W.; Tsouris, C.; Yiacoumi, Sotira.

    1997-01-01

    Magnetic-seeding filtration is a technology under development for the enhanced removal of magnetic and non-magnetic particulates from liquids. This process involves the addition of a small amount of magnetic seed particles (such as naturally occurring iron oxide) to a waste suspension, followed by treatment with a magnetic filter. Non-magnetic and weakly magnetic particles are made to undergo nonhomogeneous flocculation with the seed particles, forming flocs of high magnetic susceptibility that are readily removed by a conventional high-gradient magnetic filter. This technology is applicable to a wide range of liquid wastes, including groundwater, process waters, and tank supernatants. Magnetic-seeding filtration may be used in several aspects of treatment, such as (1) removal of solids, particularly those in the colloidal size range that are difficult to remove by conventional means; (2) removal of contaminants by precipitation processes; and (3) removal of contaminants by sorption processes. Waste stream characteristics for which the technology may be applicable include (1) particle sizes ranging from relatively coarse (several microns) to colloidal particles, (2) high or low radiation levels, (3) broad-ranging flow rates, (4) low to moderate solids concentration, (5) cases requiring high decontamination factors, and (6) aqueous or non-aqueous liquids. At this point, the technology is at the bench-scale stage of development; laboratory studies and fundamental modeling are currently being employed to determine the capabilities of the process

  13. [Study on seed testing for Salvia miltiorrhiza].

    Science.gov (United States)

    Dan, Hong-mei; Qi, Jian-jun; Zhou, Li-li; Li, Xian-en

    2008-09-01

    To establish a seed testing methods for Salvia miltiorrhiza. Referring to the International Seed Testing Rules made by ISTA and the Seed Testing for Crops (GB/T3543. 1-1995) issued by China. The seeds are selected by winnowing; the seed purity is about 50%-60%; 100 grain weight is used to determine the quality of the seed; the seed moisture content is determined by air drying, the drying hour is 3 h. Seed viability is tested by TFC method.

  14. Estudio de los decomisos de sustancias psicoactivas en los centros penitenciarios de Catalunya (1991-2010)

    OpenAIRE

    Fuente Capdevila, Blanca de la

    2013-01-01

    [spa] En el “Estudio de los decomisos de sustancias psicoactivas en los centros penitenciarios de Catalunya (1991-2010)" se examinan las tendencias de las incautaciones provenientes de los mismos analizadas en el Laboratorio Territorial de Drogas. Los datos se agrupan respecto al número y a la naturaleza de los decomisos para determinar los patrones de demanda, y por consiguiente de consumo de los internos. Los resultados se analizan de forma global considerando todos los centros y de form...

  15. Radiometric parameters in freshwater samples of Centro Experimental Aramar (CTMSP/Brazil)

    Energy Technology Data Exchange (ETDEWEB)

    Moraes, Marco Antonio P.V. [Laboratorio Radioecologico (LARE), Ipero, SP (Brazil). Dept. de Seguranca Nuclear; Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2011-07-01

    Experimental results are described obtained with gamma spectrometry, alpha and beta gross counts, liquid scintillation and fluorometry techniques for the measurement of background radiation in surface water samples, collected in Centro Experimental Aramar and surroundings, from 1988 to 2009. The estimated average background radiation concentrations in water samples in this region are low, related to the low level detection limits of the techniques, and indicates good water quality parameters, and low interference in the environment in Centro Experimental Aramar and region. (author)

  16. Germination of red alder seed.

    Science.gov (United States)

    M.A. Radwan; D.S. DeBell

    1981-01-01

    Red alder seeds were collected from six locations throughout the natural range of the species. Each seed lot was obtained from a single tree, and the seeds were used to determine germination with and without stratification treatment. Irrespective of treatment, germination varied significantly (P

  17. Nest-mediated seed dispersal

    Science.gov (United States)

    Robert J. Warren; Jason P. Love; Mark A. Bradford

    2017-01-01

    Many plant seeds travel on the wind and through animal ingestion or adhesion; however, an overlooked dispersal mode may lurk within those dispersal modes. Viable seeds may remain attached or embedded within materials birds gather for nest building. Our objective was to determine if birds inadvertently transport seeds when they forage for plant materials to...

  18. Seed systems support in Kenya

    NARCIS (Netherlands)

    Munyi, Peter; Jonge, De Bram

    2015-01-01

    The threats of climate change and rising food prices have stirred renewed attention for seed and food security in Africa, inviting new thinking on the role of seed sector development in coping with these concerns. One conceptual framework that has gained attention is the Integrated Seed Sector

  19. 7 CFR 201.15 - Weed seeds.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Weed seeds. 201.15 Section 201.15 Agriculture... REGULATIONS Labeling Agricultural Seeds § 201.15 Weed seeds. The percentage of weed seeds shall include seeds of plants considered weeds in the State into which the seed is offered for transportation or...

  20. Phytochemical Evaluation of Wild and Cultivated Pepper (Capsicum annuum L. and C. pubescens Ruiz & Pav. from Oaxaca, Mexico Evaluación Fitoquímica en Chile (Capsicum annuum L. and C. pubescens Ruiz & Pav. Silvestre y Cultivado en Oaxaca, México

    Directory of Open Access Journals (Sweden)

    Araceli Minerva Vera-Guzmán

    2011-12-01

    positivamente con el contenido de fenoles totales y flavonoides. Los morfotipos evaluados difieren en el contenido de capsaicina y dihidrocapsaicina, en C. annuum fue mayor la cantidad de capsaicina (4.9 a 142 pig mL-1 que de dihidrocapsaicina (1.5 a 65.5 pg mL-1 y en C. pubescens Ruiz & Pav. el patrón fue inverso.

  1. Cultura moral y perfil de valores del centro educativo

    Directory of Open Access Journals (Sweden)

    Laura RUBIO SERRANO

    2009-11-01

    Full Text Available RESUMEN: El artículo que presentamos a continuación representa una aproximación institucional a la educación moral a través del concepto de cultura moral de los centros educativos. Un concepto que introduce elementos teóricos y prácticos para profundizar en la institución escolar como uno de los principales agentes en la formación de la personalidad moral de los chicos y chicas. A nivel teórico, la aproximación permite concretar la idea de que la escuela en su totalidad educa moralmente y que los valores se aprenden por osmosis, a través de la participación en prácticas morales. A nivel práctico, establece un mecanismo para determinar el perfil de valores de un centro, los valores predominantes de su propuesta educativa y sus indicadores en la práctica diaria. En definitiva, posibles puntos de partida en procesos de evaluación interna y de mejora e innovación pedagógicas.ABSTRACT: This article presents an approach to moral education at institutional level which incorporates the concept of moral culture in schools. The concept introduces theoretical and practical elements for studying the school institution as one of the principal agents in the education of the moral personality in children. At the theoretical level, the approach stresses the idea that the school as a whole educates morally and that values are learnt by osmosis, via participation in moral practices. At the practical level, it establishes a mechanism for determining a school's values profile, the predominant values in its educational mission and indicators for these values in daily practice. The approach highlights possible starting points for processes of internal assessment and teaching innovation.SOMMIRE: Cet article représente une approche institutionnelle à l'éducation morale par le moyen du concept de culture morale des centres éducatifs. Il s'agit d'un concept introduisant des éléments théoriques et pratiques pour approfondir dans l

  2. Centro de Investigación Sandoz - Viena – Austria

    Directory of Open Access Journals (Sweden)

    Burckhardt, Martin H.

    1973-06-01

    Full Text Available The basic idea behind this undertaking can be infered from the operations program which consists of three sections: administration, investigation and fabrication. The Center consists of four equal buildings, with three storeys and basement in each, where the laboratories and additional installations are located. These buildings are connected to each other by covered passages and the vertical communication nuclei situated at their ends, forming a square surrounding a central building of a single floor, designed for a meeting zone, and made up of: library with reading room: information and documentation room; classroom; management, and production rooms. Circling this central zone on the outside were located the production premises and the animal pens, with a comb shaped floor plan, in a single-storey building with basement, which has a longitudinal wing housing the care and therapy installations. The Center is completed with a self-service restaurant; a cafeteria and dining room, located outside the work area, on account of their nature as a meeting place. Prefabricated concrete pieces have been used in carrying out the body of the buildings and concrete in situ in the construction of the basements.La idea básica que dirigió su realización se deduce del programa de funcionamiento, que consta de tres secciones: administración, investigación y fabricación. El Centro consta de cuatro bloques iguales, de tres plantas y sótano cada una, en las cuales están ubicados los laboratorios y las instalaciones adicionales. Estos edificios se hallan unidos entre sí por pasos cubiertos y por los núcleos de comunicación vertical situados en sus extremos, formando un cuadrado que rodea a un edificio central, de una sola planta, dedicado a zona de reunión, y compuesto de: biblioteca con sala de lectura; sala de información y documentación; aula; dirección, y salas de producción. En un cinturón exterior a esta zona central se dispusieron los locales

  3. Centro Federal de Comunidad Saint Louis - EE.UU.

    Directory of Open Access Journals (Sweden)

    Hellmuth, George

    1980-04-01

    Full Text Available The Community Federal Center lies in the outskirts of the town of Saint Louis. It was conceived and designed by the project authors — in a style characteristic of them — as a suburban architectonic complex for office use. The work, standing out over an open stretch of land, has an ample base, with a volume that is neither the actual tower of the city centre nor the classic low rural construction. The building's architectonic language permits an integration, by sympathy, in the context of the neighbouring uni-family housing zone, without naturally being assimilated in them, due to the disparity of functions. It is achieved through a fracture of scaled volumes, breaking the classic coldness of the big office building, whilst at the same time thanks to its robustness, it indicates the activity housed inside.

    El Community Federal Center está emplazado en las afueras de la ciudad de Saint Louis. Fue concebido y diseñado por los autores del proyecto —en un estilo que les es característico—, como un complejo arquitectónico suburbano destinado a oficinas. La obra, que se eleva sobre un terreno despejado, es amplía de base, presentando un volumen que no es ni la torre propia del centro urbano ni la clásica construcción rural de baja altura. El lenguaje arquitectónico del edificio permite una integración, por simpatía, en el contexto de la zona de viviendas unifamiliares cercana, sin llegar, naturalmente, a asimilarse a ellas dada la disparidad de funciones. Se lleva a cabo por medio de una fractura de volúmenes, escalonados, que rompen la frialdad clásica del gran edificio de oficinas, sin dejar de indicar, por su robustez, la actividad que alberga en su interior.

  4. Centro de exposiciones en Chicago – EE.UU.

    Directory of Open Access Journals (Sweden)

    C. F. Murphy, Asociados, arquitectos-ingenieros

    1972-11-01

    Full Text Available This building, the reconstruction and enlargement of the old, fire-damaged Center of Expositions, has been executed in three levels consisting of various exhibition halls, theater, and complemented by cafeterias, restaurants, meeting rooms, dignitary suites, and parking facilities. The access and unloading platforms which serve the exhibition sites are located in the intermediate level. Principal characteristics are, on the one hand, the large area for pedestrians and automobiles, which separates the exhibition area from the theater area, and on the other hand, the structure. The 150-foot square bays for the two-way steel truss roof system impart a spaciousness consonant with the prior design concept. For this enlargement it was necessary to use part of the adjoining lake to effect retaining walls and earth fill in the newly acquired zones.Este edificio, reconstrucción y ampliación del antiguo Centro de Exposiciones que fue dañado por un incendio, ha sido planteado en tres niveles, en los que se distribuyen los diversos salones de exposición y el teatro, completados por cafeterías, restaurante, cocinas, almacenes, tiendas y zona de aparcamientos. El acceso y los muelles de descarga que sirven a los locales de exposición, están situados en el nivel intermedio. Sus características principales son, por una parte, el gran paso para peatones y automóviles, que separa la zona de exposiciones y la del teatro, y por otra, la estructura, a base de entramados metálicos apoyados sobre grandes pilares muy distanciados, creando amplios espacios libres, acordes con su utilización posterior. Para esta ampliación hubo que utilizar parte del lago cercano, disponiendo muros de contención y rellenos de tierra en la nueva zona adquirida.

  5. Centro politécnico de Bath, Inglaterra

    Directory of Open Access Journals (Sweden)

    Gibberd, F.

    1969-09-01

    Full Text Available The general plan called for the construction of six buildings, each having a specific function, though all mutually connected. The main block contains the lecture halls and rooms for study and research. The ground floor is devoted to public rooms for the students. The first floor contains the studies of professors and the management. The library occupies the 4th and 5th floors. On the right is a block with the laboratories, and on the opposite side the gymnasium, whilst the workshops are behind the main buildings. This centre has achieved its initial aim: a modern construction within a well established urban environment having a given and well differentiated character.En la ordenación del terreno figuraba la construcción de seis edificios; cada uno de ellos destinado a desempeñar una función específica, pero enlazados entre sí. En el bloque principal se distribuyen las aulas y locales para estudio e investigación. Su planta baja aloja los salones en los que se desarrolla la vida de relación de los estudiantes. En la 1.ª planta están las salas de profesores y directivos. Las plantas 4.ª y 5.ª se dedican a biblioteca. A su derecha se alza el bloque que alberga los laboratorios; en el lado opuesto, el gimnasio, y detrás de los edificios principales están los bloques de talleres. Este nuevo Centro ha solucionado acertadamente el problema que se planteó: construir un edificio moderno en medio de un entorno urbanístico ya establecido, con un determinado y marcado carácter.

  6. Nuevo centro de la "Cement and Concrete Association", Inglaterra

    Directory of Open Access Journals (Sweden)

    Gordon and Partners, Arquitectos A.

    1969-09-01

    Full Text Available The new centre comprises: — two buildings that are residences for the students, and can house 160 individuals; — a single storey block for the dining hall of students and teaching staff, as well as the cafeteria, boiler room and other services; — two buildings with four lecture halls; — three blocks with the laboratories and research facilities, and — a fourth block with the design and draughting halls. The site is near Fulmer's Farm, which is a building from the beginning of the century, of Jacobean style, surrounded by gardens sited in exceptionally fine landscape, including very tall trees. Hence it has not been necessary to add any new landscaping to achieve a highly pleasant environment.Comprende el nuevo Centro: — dos edificios dedicados a residencia de estudiantes, con capacidad para alojar 160 alumnos; — un bloque, de una planta de altura, que alberga los comedores de estudiantes y profesores, cafetería, sala de calderas, etc.; — dos edificaciones con cuatro salas de conferencias; — tres unidades constructivas, que contienen los laboratorios, y — una cuarta unidad con las salas de dibujo. El conjunto ha sido desarrollado en las inmediaciones de la «Granja Fulmer» —edificio de principios de siglo, de estilo jacobino, rodeado de jardines—, sobre un terreno que goza de unas condiciones paisajísticas naturales excepcionales, con masas arbóreas de gran altura que han sido respetadas, por lo que no ha sido necesario incorporar nueva vegetación para lograr un entorno urbanístico agradable.

  7. Mechanical harvesting of pumpkin seeds

    OpenAIRE

    Sito, Stjepan; Ivančan, Stjepan; Barković, Edi; Mucalo, Ana

    2009-01-01

    One of the key problems in production technology of pumpkin seed for oil production is mechanized harvesting and losses of seed during mechanical harvesting. The losses of pumpkin seed during mechanical harvesting at peripheral velocity of 1.57 m/s (optimally adjusted machine) were 4.4% for Gleisdorf species, 5.2% for Slovenska species and 7.8% for pumpkin with husk. The higher average losses of pumpkin seed with husk were caused by tight connection of seed and pumpkin fruit.

  8. Irradiation effect on the seed vigor, SOD activity and MDA content in germinating seeds of yellow-seeded and black-seeded rape seed (Brassica napus L.)

    International Nuclear Information System (INIS)

    Han Jixiang; Hu Danhong; Liu Houli

    1993-01-01

    Seeds of a set of near-isogenic lines (Brassica napus L.) with different seed coat color from yellow to black were irradiated by 60 Co γ-rays of 150 krad. Seed vigor, superoxide dismutase (SOD) and malondialdehyde (MDA) in germinating seeds were analysed. In these characters, no significant difference between yellow-seeded lines (YLs) and black-seeded lines (BLs) showed before irradiation. But after irradiation, SOD activity in YLs was lower than that in BLs. While MDA content in YLs was obviously higher that that in DLs. As a result of irradiation, seed vigor of YLs was lower than that in BLs. these results indicated that the irradiation resistance of rape seed was related to the level of SOD as well as protective structure or substances in seed coat and that the radiosensitivity of YLs was higher than that of DLs

  9. Breeding for Grass Seed Yield

    DEFF Research Database (Denmark)

    Boelt, Birte; Studer, Bruno

    2010-01-01

    Seed yield is a trait of major interest for many fodder and amenity grass species and has received increasing attention since seed multiplication is economically relevant for novel grass cultivars to compete in the commercial market. Although seed yield is a complex trait and affected...... by agricultural practices as well as environmental factors, traits related to seed production reveal considerable genetic variation, prerequisite for improvement by direct or indirect selection. This chapter first reports on the biological and physiological basics of the grass reproduction system, then highlights...... important aspects and components affecting the seed yield potential and the agronomic and environmental aspects affecting the utilization and realization of the seed yield potential. Finally, it discusses the potential of plant breeding to sustainably improve total seed yield in fodder and amenity grasses....

  10. O USO DE TECNOLOGIAS EM MUSEUS E CENTROS DE VISITANTES: ESTUDO DE CASO DO CENTRO DE VISITANTES DO PROJETO TAMAR DE FERNANDO DE NORONHA – PE

    Directory of Open Access Journals (Sweden)

    Tatiane Ferrari do Vale

    2016-04-01

    ambiental personalizada, realizada por meio das palestras. Descobrir o limite que tange o uso de tecnologias e a ausência de interpretes é um dos maiores desafios atuais dos museus e centros de visitantes. Palavras-chave: Projeto Tamar. Fernando de Noronha. Novas Tecnologias.

  11. Physiological quality and seed respiration of primed Jatropha curcas seeds

    Directory of Open Access Journals (Sweden)

    Micheli Angelica Horbach

    2017-11-01

    Full Text Available ABSTRACT Seed deterioration is a natural and irreversible process. Nevertheless, seed priming with water and antioxidants can minimize oxidative damage in oilseeds, resulting in attenuation of seed deterioration. The objective of this assay was to evaluate seed priming on respiratory activity of Jatropha curcas submitted to accelerated aging. Seeds from two provenances (Janauba and Pedro J. Caballero were submitted to three priming treatments (control, immersion in deionized water, and with 750 µmol L-1 of ascorbic acid and treated for accelerated aging at 41 °C for 72 h. The results showed that the priming of J. curcas seeds promoted tolerance to accelerated aging. Primed seeds, with ascorbic acid from Janauba and deionized water from Pedro J. Caballero, resulted in a higher percentage of normal seedlings, and increased germination speed index and seed respiration. The decline of physiological quality of J. curcas seeds after accelerated aging is directly associated with a reduction in respiratory activity that is related to seed moisture content.

  12. Empty seeds are not always bad: simultaneous effect of seed emptiness and masting on animal seed predation.

    Directory of Open Access Journals (Sweden)

    Ramón Perea

    Full Text Available Seed masting and production of empty seeds have often been considered independently as different strategies to reduce seed predation by animals. Here, we integrate both phenomena within the whole assemblage of seed predators (both pre and post-dispersal and in two contrasting microsites (open vs. sheltered to improve our understanding of the factors controlling seed predation in a wind-dispersed tree (Ulmus laevis. In years with larger crop sizes more avian seed predators were attracted with an increase in the proportion of full seeds predated on the ground. However, for abundant crops, the presence of empty seeds decreased the proportion of full seeds predated. Empty seeds remained for a very long period in the tree, making location of full seeds more difficult for pre-dispersal predators and expanding the overall seed drop period at a very low cost (in dry biomass and allocation of C, N and P. Parthenocarpy (non-fertilized seeds was the main cause of seed emptiness whereas seed abortion was produced in low quantity. These aborted seeds fell prematurely and, thus, could not work as deceptive seeds. A proportion of 50% empty seeds significantly reduced ground seed predation by 26%. However, a high rate of parthenocarpy (beyond 50% empty seeds did not significantly reduce seed predation in comparison to 50% empty seeds. We also found a high variability and unpredictability in the production of empty seeds, both at tree and population level, making predator deception more effective. Open areas were especially important to facilitate seed survival since rodents (the main post-dispersal predators consumed seeds mostly under shrub cover. In elm trees parthenocarpy is a common event that might work as an adaptive strategy to reduce seed predation. Masting per se did not apparently reduce the overall proportion of seeds predated in this wind-dispersed tree, but kept great numbers of seeds unconsumed.

  13. Seeds of the Future

    CERN Multimedia

    CERN. Geneva

    2015-01-01

    Five of the global issues most frequently debated today are the decline of biodiversity in general and of agrobiodiversity in particular, climate change, hunger and malnutrition, poverty and water. These issues are connected with each other, and should be dealt with as such. Most of our food comes from seeds (even when we eat meat, we indirectly eat plants, which come from seeds) and food affects our health. The evolution of plant breeding, the science which is responsible for the type and the diversity of seed that farmers plant, and hence for the diversity of food that we eat, helps us understand how agrobiodiversity has decreased. An agro-ecological model of agriculture could be solution to the most important problems affecting the planet, but is often criticized for not being able to produce enough food for a growing population casting doubts on whether food security and food safety can be compatible objectives. Participatory and evolutionary plant breeding, while benefiting from advances in molecular g...

  14. Physicochemical Evaluation of Seeds and Oil of Nontraditional Oil Seeds

    Directory of Open Access Journals (Sweden)

    Adam Ismail Ahmed

    2015-08-01

    Full Text Available The present work was conducted in the Laboratory of Biochemistry and Food science department, Faculty of Natural Resources and Environmental Studies, University of Kordofan, in order to evaluate some nontraditional oil seeds these are i.e. Marula (Sclerocarya birrea, Roselle (Hibiscus sabdariffa L. seeds and Christ’s thorn (Zizyphus spina-christi seeds. The seeds of the roselle and Christ’s thorn fruits were procured from Elobeid local market, North Kordofan State, while marula fruits were obtained from Elnuhod, West Kordofan State. The proximate composition of the seeds, cake and christ’s thorn pulp was done. Some chemical and physical properties were performed for the extracted oil. The results revealed that proximate composition of the seeds and cake differ statistically among the studied materials. Significant differences were observed among the oil extracted from these species; moreover, these oils differ significantly in color and viscosity only.

  15. Ritual y poder en los centros budistas zen argentinos

    Directory of Open Access Journals (Sweden)

    Catón Eduardo Carini

    2009-05-01

    Full Text Available Resumen El presente artículo es un estudio de los grupos budistas zen argentinos desde la perspectiva de la antropología política. El objetivo es, en primer lugar, explorar las distintas posiciones sociales que los miembros pueden ocupar al interior de un grupo zen y los sistemas nativos de clasificación social, es decir, las categorías que nombran y crean distinciones rituales. En segundo lugar, analizar la estructura de autoridad y de poder al interior de una comunidad zen, indagando los vínculos entre el sistema ritual de posiciones sociales y la distribución del poder y la autoridad. La investigación etnográfica se efectuó siguiendo una metodología cualitativa, que incluyó la observación participante en los encuentros que los centros zen organizan periódicamente y la realización de entrevistas semi-estructuradas e historias de vida a sus miembros. Las conclusiones giran en torno a la importancia del ritual para la vida política de la comunidad, y la centralización del poder en la figura del maestro zen mediante la particular dinámica que evidencia la estructura de autoridad. Palabras clave: Argentina; Budismo zen; Política; Poder. Abstract The present anthropological study takes a political approach to the Argentinean Zen Buddhism groups. The first objective is to explore the variety of native social classification systems, that is to say the categories naming and creating rituals. Secondly, we try to analyze the authority and power system within a Zen community, investigating the relation between the ritual system of social positions and the distribution of power and authority. This article is based on qualitative research, which included periodic participant observation in gatherings organized by the Zen Buddhism centres and semistructured interviews with and life histories of their members. The conclusions focus on the importance of ritual for the community’s political life, and the centralization of power in the

  16. La experiencia del Centro Centroamericano de Población

    Directory of Open Access Journals (Sweden)

    Carmen Marín

    2006-01-01

    Full Text Available Introducción.- Las NTIC abren nuevas posibilidades para la educación. Aprender en entornos mediados por NTIC supone flexibilidad en espacio y tiempo e interacción entre los participantes para el aprendizaje significativo. Las universidades al implementar ofertas formativas de carácter virtual deben reconsiderar sus modelos de enseñanza y de aprendizaje e iniciar procesos de análisis y revisión de las experiencias realizadas. El presente artículo pretende sistematizar el accionar del proyecto CapDis del Centro Centroamericano de Población (CCP al introducir el uso de las nuevas tecnologías de información y comunicación en la educación superior en la Universidad de Costa Rica (UCR. Métodos.- Se basa en un estudio de caso que aplica el método cualitativo mediante revisión documental y registro de eventos. Resultados.- En CapDis se identifican las siguientes etapas: I. Páginas web vinculadas; II. Páginas web integradas y III. Learning Management System. En las primeras dos etapas se dio soporte a los profesores y se asumió la mayor parte de las tareas de implementación y mantenimiento. Cuando se incorporó moodle.org, se facilitó la participación de más profesores quienes asumieron un rol más activo en CapDis. A marzo 2005, la comparación de metas y resultados evidencia que fueron superados los resultados esperados. Discusión.- El presente artículo se constituye en un insumo útil en la identificación de las dificultades, alcances y limitaciones de la incorporación de las NTIC en la docencia en educación superior en la Universidad de Costa Rica. Las etapas identificadas en CapDis han sido descritas en términos del alcance de los recursos NTIC puestos en práctica. Más allá de los aspectos tecnológicos y administrativos descritos, el proceso seguido por CapDis logró enriquecer la interacción de una modalidad asíncrona (diferida a una síncrona (inmediata, lo que abre la oportunidad de contribuir a una mejor

  17. El primer centro nacional de debate sobre medicina familiar

    Directory of Open Access Journals (Sweden)

    Félix J. Sansó soberats

    2003-06-01

    Full Text Available El presente trabajo constituye el texto íntegro de la relatoría del I Centro Nacional de Debate sobre Medicina Familiar organizado por la UJC y realizado en la Facultad de Ciencias Médicas de Cienfuegos el día 3 de febrero de 1995. En este documento se presentan los principales criterios expresados por los más de 300 delegados que asistieron a aquel evento, entre los que estuvieron estudiantes de medicina y enfermería, enfermeras y licenciadas en enfermería relacionadas con la atención primaria, médicos recién graduados, residentes y especialistas en MGI; así como también responsables del plan, administrativos y políticos, a diferentes niveles. Esta relatoría constituye un interesante material, que nos expone la situación de la medicina familiar en Cuba en la primera mitad de la década de los 90. Su estudio permite comparar la situación de entonces con cualquier época anterior o posterior de la salud pública cubana, y evidencia el desarrollo alcanzado hasta hoy. Muestra, incluso, que algunas de las ideas expuestas en aquel encuentro constituyen aún verdaderos anhelos; y por tanto, cuánto se puede avanzar en el permanente empeño de perfeccionar nuestro modelo de Medicina Familiar.The present paper constitutes the full text of the Report of the First National Center of Debate on Family Medicine, organized by the Young Communist League and carried out in the Medical School in Cienfuegos province on February 3rd, 1995. This document set forth the main criteria stated by over 300 delegates participating in the event, among them medical and nursing students, nurses involved in primary health care, physicians who has just graduated, residents and Comprehensive General Medicine specialist as well as administrative and political representatives in charge of the plan at different levels. This report is an interesting material that shows the situation of family medicine in Cuba from the first half of the 90’s. The study of this

  18. Sunflower seed allergy

    Science.gov (United States)

    Ukleja-Sokołowska, Natalia; Gawrońska-Ukleja, Ewa; Żbikowska-Gotz, Magdalena; Bartuzi, Zbigniew; Sokołowski, Łukasz

    2016-01-01

    Sunflower seeds are a rare source of allergy, but several cases of occupational allergies to sunflowers have been described. Sunflower allergens on the whole, however, still await precise and systematic description. We present an interesting case of a 40-year-old male patient, admitted to hospital due to shortness of breath and urticaria, both of which appeared shortly after the patient ingested sunflower seeds. Our laryngological examination revealed swelling of the pharynx with retention of saliva and swelling of the mouth and tongue. During diagnostics, 2 months later, we found that skin prick tests were positive to mugwort pollen (12/9 mm), oranges (6/6 mm), egg protein (3/3 mm), and hazelnuts (3/3 mm). A native prick by prick test with sunflower seeds was strongly positive (8/5 mm). Elevated concentrations of specific IgE against weed mix (inc. lenscale, mugwort, ragweed) allergens (1.04 IU/mL), Artemisia vulgaris (1.36 IU/mL), and Artemisia absinthium (0.49 IU/mL) were found. An ImmunoCap ISAC test found an average level of specific IgE against mugwort pollen allergen component Art v 1 - 5,7 ISU-E, indicating an allergy to mugwort pollen and low to medium levels of specific IgE against lipid transfer proteins (LTP) found in walnuts, peanuts, mugwort pollen, and hazelnuts. Through the ISAC inhibition test we proved that sunflower seed allergen extracts contain proteins cross-reactive with patients’ IgE specific to Art v 1, Art v 3, and Jug r 3. Based on our results and the clinical pattern of the disease we confirmed that the patient is allergic to mugwort pollen and that he had an anaphylactic reaction as a result of ingesting sunflower seeds. We suspected that hypersensitivity to sunflower LTP and defensin-like proteins, both cross-reactive with mugwort pollen allergens, were the main cause of the patient’s anaphylactic reaction. PMID:27222528

  19. Pathogenic mycoflora on carrot seeds

    Directory of Open Access Journals (Sweden)

    Bogdan Nowicki

    2013-12-01

    Full Text Available Altogether 300 seed samples were collected during 9 years in 8 regions of Poland and the fungi Were isolated and their pathogenicity to carrot seedlings was examined. Alternaria rudicina provcd to be the most important pathogen although. A. alternata was more common. The other important pathogens were Fusarium spp., Phoma spp. and Botrytis cinerea. The infection of carrot seeds by A. radicina should be used as an important criterium in seed quality evaluation.

  20. Maturation of sugar maple seed

    Science.gov (United States)

    Clayton M., Jr. Carl; Albert G., Jr. Snow; Albert G. Snow

    1971-01-01

    The seeds of a sugar maple tree (Acer saccharum Marsh.) do not mature at the same time every year. And different trees mature their seeds at different times. So time of year is not a reliable measure of when seeds are ripe. Better criteria are needed. In recent studies we have found that moisture content and color are the best criteria for judging when sugar maple...

  1. Within canopy distribution of cotton seed N

    Science.gov (United States)

    Whole cotton seeds can be an important component of dairy rations. Nitrogen content of the seed is an important determinant of the feed value of the seed. Efforts to increase the seed value as feed will be enhanced with knowledge of the range and distribution of seed N within the cotton crop. This s...

  2. La calidad de vida de los sujetos usuarios de un centro social de personas mayores

    Directory of Open Access Journals (Sweden)

    César Bugallo Carrera

    2014-09-01

    Full Text Available En esta investigación hemos intentado comprobar si la asistencia a los centros sociales de personas mayores es un medio eficaz para la mejora de la calidad de vida de las personas mayores, es decir, si los usuarios de dichos centros tienen una mejor calidad de vida que aquellos que no acuden a ellos. Para ello, hemos contado con un grupo experimental y un grupo control. A continuación ambos grupos han pasado dos pruebas: una que valora la calidad de vida y otra, el deterioro cognitivo. Una vez pasadas las pruebas y obtenidas las puntuaciones, hemos concluido que los usuarios del centro social tienen una mayor calidad de vida que los sujetos que no acuden a él.

  3. La dimensión colaborativa con tic en la dirección de centros

    Directory of Open Access Journals (Sweden)

    L. M. González Rodero

    2013-01-01

    Full Text Available El presente trabajo busca profundizar en la perspectiva e influencia del aprendizaje colaborativo a través de las TIC desde la gestión y dirección de centros educativos y como ello repercute en la formación del profesorado. Esta investigación forma parte de un proyecto que busca identificar la importancia y el grado de implantación de las tecnologías sociales en los centros de infantil y primaria de Castilla y León, a partir de una muestra de 24 centros de la Comunidad Autónoma acreditados con certificación TIC nivel 5 en el curso 2011-2012.

  4. Centro parroquial Harksheide-Stüberg Alemania Federal

    Directory of Open Access Journals (Sweden)

    von Bassewitz, Horst

    1976-12-01

    Full Text Available The Centre of the Evangelic Lutheran Community in Harksheide-Stüberg, situated in the midst of spacious green lawns, consists of two independent constructions with a central open patio in between, where the entrances to the social gathering premises are located. The smallest building, one storey only, is designed for the kindergarten. It comprises: three meeting rooms for groups, play room, office for the director, and housing for the person in charge of the kindergarten, washrooms and kitchen. The other two-storeyed building is entirely planned for the grown-up community, containing on the ground-floor: chapel, club for retired people, meeting room and a room for games, administration department and the dúplex housing for the parson. On the top floor are distributed: library, room for religious teaching, offices and two houses - one for the sacristan and the other one for the deaconess. In the construction traditional systems and materials have been used, and whenever possible the natural surfaces have been maintained. In this manner, a pleasant contrast of textures and colours has been achieved, as well as great simplicity in the lines, in perfect harmony with the country side setting.El Centro de la Comunidad Evangélica Luterana de Harkseide-Stüberg, ubicado en un lugar rodeado de amplias praderas, está constituido por dos construcciones independientes que crean entre sí un patio central abierto, en donde se sitúan las entradas a los locales sociales. El edificio más pequeño, de una sola planta, se dedica a jardín de infancia. Consta de: tres locales para reunión de grupos, sala de juegos, un despacho para la directora y una vivienda para la encargada de la guardería, además de los servicios de cocina y aseos correspondientes. La otra edificación, desarrollada en dos alturas, se destina en su totalidad a la comunidad adulta. Se compone, en la planta baja de: capilla, club de ancianos, sala de reunión y otra de juegos

  5. A role for seed storage proteins in Arabidopsis seed longevity

    NARCIS (Netherlands)

    Nguyen, Thu-Phuong|info:eu-repo/dai/nl/328228818; Cueff, Gwendal; Hegedus, Dwayne D; Rajjou, Loïc; Bentsink, Leónie|info:eu-repo/dai/nl/241338735

    2015-01-01

    Proteomics approaches have been a useful tool for determining the biological roles and functions of individual proteins and identifying the molecular mechanisms that govern seed germination, vigour and viability in response to ageing. In this work the dry seed proteome of four Arabidopsis thaliana

  6. 19 CFR 10.57 - Certified seed potatoes, and seed corn or maize.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Certified seed potatoes, and seed corn or maize... Provisions Potatoes, Corn, Or Maize § 10.57 Certified seed potatoes, and seed corn or maize. Claim for classification as seed potatoes under subheading 0701.10.00, as seed corn (maize) under subheading 1005.10...

  7. Seed dormancy and seed longevity: from genetic variation to gene identification

    NARCIS (Netherlands)

    Nguyen, T.P.

    2014-01-01

    Seed dormancy and seed longevity are the most important survival traits in the soil seed bank. Both traits are induced during seed maturation and evolved to assure seed survival during environmental conditions that cannot support the regular course of life. Seed dormancy is related to the timing of

  8. Why high seed densities within buried mesh bags may overestimate depletion rates of soil seed banks

    NARCIS (Netherlands)

    Mourik, van T.A.; Stomph, T.J.; Murdoch, A.J.

    2005-01-01

    1. Estimates of seed bank depletion rates are essential for modelling and management of plant populations. The seed bag burial method is often used to measure seed mortality in the soil. However, the density of seeds within seed bags is higher than densities in natural seed banks, which may elevate

  9. Heirloom biodynamic seeds network rescue, conservation and multiplication of local seeds in Brazil

    OpenAIRE

    Jovchelevich, Pedro

    2014-01-01

    Structuring a network organic and biodynamic seed involving farmers in the central- southern Brazil. Training, participatory breeding, edition of publications, fairs of exchange seeds, a processing unit and assessment of seed quality, commercial seed multiplication with emphasis on vegetables. This network has garanteed the autonomy of farmers in seed production and enriched agrobiodiversity through exchanges of seed.

  10. Seed drill depth control system for precision seeding

    DEFF Research Database (Denmark)

    Kirkegaard Nielsen, Søren; Munkholm, Lars Juhl; Lamandé, Mathieu

    2018-01-01

    acting on the drill coulters, which generates unwanted vibrations and, consequently, a non-uniform seed placement. Therefore, a proof-of-concept dynamic coulter depth control system for a low-cost seed drill was developed and studied in a field experiment. The performance of the active control system...... depth control system this variability was reduced to±2 mm. The system with the active control system operated more accurately at an operational speed of 12 km h−1 than at 4 km h−1 without the activated control system.......An adequate and uniform seeding depth is crucial for the homogeneous development of a crop, as it affects time of emergence and germination rate. The considerable depth variations observed during seeding operations - even for modern seed drills - are mainly caused by variability in soil resistance...

  11. The evolution of the Luz y Fuerza del Centro substations. Volume 2; Evolucion de las subestaciones de Luz y Fuerza del Centro. Volumen 2

    Energy Technology Data Exchange (ETDEWEB)

    Carranza Ramirez, Sergio [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    This document cites historical background of how the Luz y Fuerza del Centro substations have evolved up to nowadays. A brief description is made of one electric substation, the substation design criteria are mentioned, since it must comply with the requirements of reliability, service continuity, service quality, economy, geographical location, just for mentioning some of them. The more utilized arrangements of the Luz y Fuerza del Centro substations are described. In the same manner, the remote control substations are described mentioning the main elements of this type of substations. Mention is made also of the technological incorporations that have been made to the substations and the perspectives there are from these. One line diagrams of the electric substations are shown, as well as from power plant substations [Espanol] Este documento cita antecedentes historicos de como han evolucionando las subestaciones de Luz y Fuerza del Centro hasta hoy en dia. Se realiza una breve descripcion de una subestacion electrica, se mencionan los criterios de diseno de una subestacion, ya que debe cumplir con los requisitos de confiabilidad, continuidad, calidad del servicio, economia, situacion geografica, por mencionar algunos de estos. Se describen los arreglos de las subestaciones mas utilizados por Luz y Fuerza del Centro. De igual manera se describen las subestaciones telecontroladas mencionando los principales elementos de este tipo de subestaciones. Se mencionan las incorporaciones tecnologicas que se han realizado a las subestaciones y las perspectivas que se tienen de estas. Se muestran diagramas unifilares de subestaciones electricas, al igual que se muestran las plantas de las subestaciones

  12. La satisfacción de los clientes de los centros deportivos municipales de Barcelona

    OpenAIRE

    Elasri Ejjaberi, Amal; Triadó i Ivern, Xavier Ma.; Aparicio Chueca, Ma. del Pilar (María del Pilar)

    2015-01-01

    El objetivo de este trabajo es identificar y analizar las variables que más influyen en la satisfacción del cliente en los centros deportivos de Barcelona. Los datos fueron recogidos en una encuesta entre los clientes actuales de centros deportivos municipales. Un análisis factorial aplicado a esta información revela cinco dimensiones que subyacen a los múltiples componentes de la oferta de servicios en dichas instalaciones: su calidad, los recursos humanos, la comunicación, el entorno social...

  13. Estrategias de desarrollo para la empresa Cal del Centro S.A.C.

    OpenAIRE

    Bautista Antón, Yovanni Patricia; Mendoza Rojas, Miguel Ángel

    2015-01-01

    Cal del Centro S.A.C. es una sociedad anónima cerrada cuyo negocio gira en torno a la actividad económica de la fabricación de cemento, cal y yeso. El objetivo del presente trabajo es evaluar la posibilidad de éxito de un proyecto de inversión en una planta de cal, a través de Cal del Centro S.A.C. –como empresa autosuficiente–, para asegurar el cien por ciento del suministro de óxido de calcio en cantidad y calidad para el procesamiento de concentrados de cobre y el tratamiento de aguas indu...

  14. Desarrollo de sistema de gestión académica de centro preuniversitario

    OpenAIRE

    Castañeda Alegría, Sergio Alfredo; Castañeda Alegría, Sergio Alfredo

    2008-01-01

    El presente informe tiene como fin desarrollar e implementar un modelo de software basado en plataforma web, tomando como caso de estudio los procesos de coordinación de la gestión académica del Centro Preuniversitario de la UNIVERSIDAD PERUANA DE LAS AMÉRICAS (UPLA), con lo que se busca informatizar los procesos académicos y administrativos de dicha coordinación. El Centro Preuniversitario de la UPLA, por ser parte de una institución educativa, necesita automatizar sus procesos de gestión...

  15. Plan de mejoramiento integral del Centro Educativo Víctor Cartagena de la ciudad de Cayambe.

    OpenAIRE

    Aguilar Pozo, Patricia Jeanneth

    2009-01-01

    El Plan de Mejoramiento Integral incluye cuatro capítulos correspondientes a una investigación cualitativa y cuantitativa que sea realizó dentro y fuera del Centro Educativo Víctor Cartagena. En el primer capítulo se hace un análisis de la importancia de la educación inicial y primaria; la incidencia de la calidad educativa y una breve descripción de la perspectiva de la escuela como empresa. En el segundo capitulo se expone un diagnóstico del Centro Educativo Víctor Cart...

  16. Modelo de gestión integral para centros comerciales pequeños

    OpenAIRE

    Molina Saquicela, Mónica Andrea

    2013-01-01

    Desarrollar un modelo de gestión integral diseñado a la medida de las necesidades de los centros comerciales pequeños, tomando como base para su implementación al Centro Comercial Plaza de las Américas, servirá como una herramienta clave que ayudará a su equipo gerencial, a través de un manejo planificado y el aprovechamiento de sus diferenciadores, lograr un crecimiento a lo largo del tiempo, así como un mejor posicionamiento en la mente del consumidor y una mayor participación en el mercado...

  17. Nuevo centro olímpico en Lake Placid, EE.UU

    OpenAIRE

    Hellmuth, George; Obata, Gyo; Kassabaum, George

    1980-01-01

    Este nuevo centro deportivo, sede de los Juegos Olímpicos de Invierno de 1980, consta de una pista principal de hielo de dimensiones olímpicas con unos graderíos para 8.000 personas, y de una pista más pequeña utilizada para los Juegos U.S.A. Los servicios auxiliares se encuentran debajo de las gradas o en la estructura que enlaza el nuevo Centro con la pista ya empleada en los anteriores Juegos de 1932. Completa el complejo una Escuela Superior y una pista de forma oval para patinaje...

  18. Evaluación de centros de recursos en la Red : el caso de Octopus

    OpenAIRE

    Medina, Antonio; Carioca, Vito; Passarinho, Aldo

    2003-01-01

    El creciente desarrollo de centros de recursos en la Red está demandando de forma progresiva la puesta en marcha de estrategias de evaluación de los mismos que permitan su mayor optimización. Los autores de este trabajo desarrollan una metodología específica para la valoración de un centro específico en la Red, Octopus._______________________________Resource centres offer teachers different means to improve and make their work easier. The present paper shows a programme to evaluate resource c...

  19. 7 CFR 201.50 - Weed seed.

    Science.gov (United States)

    2010-01-01

    ... REGULATIONS Purity Analysis in the Administration of the Act § 201.50 Weed seed. Seeds (including bulblets or... sieve are considered weed seeds. For wild onion and wild garlic (Allium spp.) bulblets classed as inert...

  20. Seeding and planting upland oaks

    Science.gov (United States)

    1989-01-01

    Oaks can be planted or seeded in uplands to: (1) afforest old fields, strip-mined areas, or other areas devoid of trees, and (2) supplement natural reproduction within existing forests. Planting is usually more successful than direct seeding. But even under good conditions survival and growth of planted oak has been considerably poorer than with conifers and other...

  1. STORAGE OF Handroanthus umbellatus SEEDS

    Directory of Open Access Journals (Sweden)

    Cibele Chalita Martins

    2014-09-01

    Full Text Available http://dx.doi.org/10.5902/1980509815725Seed storage under controlled environmental conditions represents one of the most important lines of research to be applied on short-lived forest species as Handroanthus. The present research aimed to identify the most suitable seed storage conditions and longevity behavior of Handroanthus umbellatus seeds subject to the following storage treatments: packaging permeable paper bags under a no-controlled laboratory temperature and humidity (control and multiwall semipermeable bag at temperatures of -18 ºC, 1 ºC and 25 ºC. Seeds were dried to 6.3% of water content. Stored seeds were evaluated every three months until 24 months for water content, germination percentage and vigor utilizing first counting test. Seeds of T. umbellata are orthodox, with low longevity under natural conditions, once they remain viable for less than 5 months. The best conditions of seed preservation of these species were obtained by storage at -18° C in multiwall bags. Under these conditions physiological seed quality remains unchanged for a 24-month period.

  2. Uganda Early Generation Seed Study

    NARCIS (Netherlands)

    Mastenbroek, A.; Ntare, Bonny

    2016-01-01

    One of the major bottlenecks limiting farmers’ access to good quality seed for food crops in Uganda is the shortage of early generation seed (EGS - breeder and foundation) to produce sufficient quantities of certified and/or quality declared) to satisfy the needs of farmers. A national study was

  3. Insecticide seed treatments for sugarbeet

    Science.gov (United States)

    Pest feeding and vectoring of viruses cause serious problems in sugarbeet production worldwide. In order to ameliorate pest and disease problems on sugarbeet, two seed treatments, Poncho Beta (60 g a.i. clothianidin + 8 g a.i. beta-cyfluthrin/100,000 seed) and Cruiser Tef (60 g a.i. thiamethoxam + 8...

  4. Orthodox seeds and resurrection plants

    NARCIS (Netherlands)

    Costa, Maria Cecília Dias; Cooper, Keren; Hilhorst, Henk W.M.; Farrant, Jill M.

    2017-01-01

    Although staple crops do not survive extended periods of drought, their seeds possess desiccation tolerance (DT), as they survive almost complete dehydration (desiccation) during the late maturation phase of development. Resurrection plants are plant species whose seeds and vegetative tissues are

  5. Efficient computation of spaced seeds

    Directory of Open Access Journals (Sweden)

    Ilie Silvana

    2012-02-01

    Full Text Available Abstract Background The most frequently used tools in bioinformatics are those searching for similarities, or local alignments, between biological sequences. Since the exact dynamic programming algorithm is quadratic, linear-time heuristics such as BLAST are used. Spaced seeds are much more sensitive than the consecutive seed of BLAST and using several seeds represents the current state of the art in approximate search for biological sequences. The most important aspect is computing highly sensitive seeds. Since the problem seems hard, heuristic algorithms are used. The leading software in the common Bernoulli model is the SpEED program. Findings SpEED uses a hill climbing method based on the overlap complexity heuristic. We propose a new algorithm for this heuristic that improves its speed by over one order of magnitude. We use the new implementation to compute improved seeds for several software programs. We compute as well multiple seeds of the same weight as MegaBLAST, that greatly improve its sensitivity. Conclusion Multiple spaced seeds are being successfully used in bioinformatics software programs. Enabling researchers to compute very fast high quality seeds will help expanding the range of their applications.

  6. Kauri seeds and larval somersaults

    DEFF Research Database (Denmark)

    Dupont, Steen Thorleif

    2012-01-01

    The trunk morphology of the larvae of the kauri pine (Agathis) seed infesting moth Agathiphaga is described using conventional, polarization, and scanning electron microscopy. The pine seed chamber formed by the larva is also described and commented on. The simple larval chaetotaxy includes more ...

  7. Banking Wyoming big sagebrush seeds

    Science.gov (United States)

    Robert P. Karrfalt; Nancy Shaw

    2013-01-01

    Five commercially produced seed lots of Wyoming big sagebrush (Artemisia tridentata Nutt. var. wyomingensis (Beetle & Young) S.L. Welsh [Asteraceae]) were stored under various conditions for 5 y. Purity, moisture content as measured by equilibrium relative humidity, and storage temperature were all important factors to successful seed storage. Our results indicate...

  8. Recent advances in the development of quality protein maize germplasm at the Centro International de Mejoramiento de Maiz y Trigo

    International Nuclear Information System (INIS)

    Vasal, S.K.; Villegas, E.; Tang, C.Y.

    1984-01-01

    The paper reviews past difficulties in the acceptance of quality protein maize (QPM) materials by farmers because of several crucial problems plaguing these materials. The breeding strategy used at the Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) over the past several years is described in detail. The strategy is based on the combined use of two genetic systems involving the opaque-2 gene and genetic modifiers. Inheritance of modifiers, some considerations in the exploitation and their role in circumventing the problems facing QPM materials are discussed. Progress is reported in overcoming the problems of yield, seed appearance, ear rot and the dry-down ability in QPM materials. Using hard endosperm QPM donor stocks, a wide array of QPM germplasm has been developed through the conversion programme and the development of QPM gene pools. To make the best use of available QPM germplasm, the current efforts in the management and handling of the germplasm are outlined. In the back-up stages, eight tropical and six subtropical QPM pools will be handled. In addition, six tropical and four subtropical advanced QPM populations were formed. These will be subjected to a rigorous international progency testing programme for improved yield, general adaptation and the stability of modifiers. Experimental data from international tests are presented, indicating the superior performance of several QPM materials. The objectives of some exploratory projects in QPM research are explained. Renewed interest in QPM research is being shown and the outlook for commercial exploitation of QPM materials in some countries seems very promising. (author)

  9. Vigor of sunflower and soybean aging seed

    OpenAIRE

    Tatić M.; Balešević-Tubić S.; Ðorđević V.; Miklič V.; Vujaković M.; Ðukić V.

    2012-01-01

    Seed aging and deterioration affect seed vigor and viability. The characteristics of the chemical composition of oil crops seed are related to specific processes occurring in the seed during storage. This study was performed to examine the changes in seed vigor of different sunflower and soybean genotypes under controlled and conventional (uncontrolled) conditions of natural aging for six and twelve months. Obtained results show that the degree of seed dama...

  10. Wheat seed system in Ethiopia: Farmers' varietal perception, seed sources, and seed management

    NARCIS (Netherlands)

    Bishaw, Z.; Struik, P.C.; Gastel, van A.J.G.

    2010-01-01

    Knowledge and information on farmers' perception and its influence on adoption of modern wheat varieties, awareness and source of new wheat production technology, wheat seed sources, and on-farm seed-management practices remain sporadic in Ethiopia. This study was conducted to understand the

  11. Farmer’s seed sources and seed quality: 2. seed health

    NARCIS (Netherlands)

    Bishaw, Z.; Struik, P.C.; Gastel, van A.J.G.

    2013-01-01

    The study assessed the health quality of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) seed samples collected from formal and informal sector in Ethiopia and Syria. In Ethiopia, several seed-borne fungi were found on wheat samples: Cochliobolus sativum, Fusarium avenaceum, F.

  12. Nuevos centros de almacenamiento inca en Huánuco Pampa

    OpenAIRE

    Ordóñez Inga, Carlo José Alonso

    2013-01-01

    Se proporcionan nuevos alcances sobre la identificación y el estudio de nuevos lugares de almacenamiento o colcas asociados al Centro Administrativo Inca de Huánuco Pampa, los mismos que no fueron reconocidos por otros investigadores que trabajaron en la zona.

  13. Centro Nacional de Información de Pesticidas - Portada

    Science.gov (United States)

    Envenenamiento humano Envenenamiento de mascotas Recursos para derrames y limpieza Envenenamiento de vida información local sobre pesticidas y control de plagas Información y recursos sobre pesticidas: Preguntas ) Podcasts Materiales de difusión Recursos profesionales de NPIC (inglés) Redes Sociales: Centro Nacional

  14. Prospection works for uranium mineralizations in the sector Centro Escolar. Province of Pinar del Rio

    International Nuclear Information System (INIS)

    Alcaide Orpi, J.; Pena Fortes, B.; Olivera Acosta, J.; Leal Ramirez, R.; Geler Roffe, T.; Sanchez Rumayor, J.

    1996-01-01

    The present article shows the final results obtained from the prospection works, realized in a sector Centro Escolar. Those works were projected in order to search radioactive minerals accumulations in some prospective areas. The main result was the selection of a perspective area which have been recommended to be evaluated in depth

  15. Una faglia tra storia e memoria. Il centro di documentazione sul terremoto dell’Emilia

    Directory of Open Access Journals (Sweden)

    Silvia Lotti

    2016-12-01

    Full Text Available L’articolo è un resoconto di un’esperienza di stage realizzata all’interno del Master di II livello in Public History di Unimore, in collaborazione con il Comune di Mirandola e l’Istituto Storico di Modena. La ricerca si è concentrata sull’avvio del futuro Centro di documentazione sul terremoto dell’Emilia.

  16. Centro Nacional de Salud Ocupacional y Protección del Ambiente para la Salud (CENSOPAS)

    OpenAIRE

    Instituto Nacional de Salud

    2004-01-01

    En el mes de setiembre, se atendieron en el servicio de psicología del Centro Nacional de Salud Ocupacional del INS a 258 personas, de las cuales 86% fueron varones y 14% mujeres. De ellos 5% presentó alguna alteración de su salud mental.

  17. Centro Nacional de Salud Ocupacional y Protección del Ambiente para la Salud (CENSOPAS)

    OpenAIRE

    Instituto Nacional de Salud

    2005-01-01

    En el mes de agosto del 2005, se atendieron en el servicio de salud de psicología del Centro nacional de Salud Ocupacional del INS, 45 personas de las cuales sólo una persona presentó alguna alteración de su salud mental (Síndrome Orgánico Cerebral)

  18. El centro histórico de Barranquilla: problemáticas ambientales y sociales

    Directory of Open Access Journals (Sweden)

    Myriam Graciela Bonilla Becerra

    2007-01-01

    Full Text Available Los procesos de rehabilitación de los centros históricos en diversas ciudades del mundo, no solo se enfocan en los aspectos arquitectónicos o de espacio público, sino que deben atender los problemas ambientales. El centro histórico es por lo general el área con mayor degradación ambiental a nivel de contaminación atmosférica, contaminación por ruido, manejo de residuos sólidos y otras formas de contaminación de la ciudad; pero en el caso de Barranquilla el sistema de caños de la ciudad ha sido afectado por las actividades propias de su centro histórico, llevándolos a un estado de degradación y contaminación que no ha sido solucionado en forma definitiva. La recuperación de los caños de Barranquilla es un asunto prioritario y es por esto que el gobierno colombiano ha aprobado la “Implementación Plan de Saneamiento de los Caños de la Cuenca Oriental de la Ciudad de Barranquilla”, cuyo costo asciende 75.554 millones de pesos. Lo que permitirá darle una nueva cara al centro histórico de la ciudad.

  19. Centro de Energia Nuclear na Agricultura (CENA) - Sao Paulo, Brazil, - Annual report, 1978

    International Nuclear Information System (INIS)

    Anon.

    The activities carried out at 'Centro de Energia Nuclear na Agricultura (CENA) S.P., Brazil, in 1978 are related, such as : development of research on the use of radioisotopes in crop improvement and plant breeding, as well as in the improvement of animal production; works in collaboration with other entities; personnel formation and scientific exchange with other countries. (M.A.) [pt

  20. Centro TORTUGA's Integrated Research and Professional Development Training for Early Stage Hispanic Students in Puerto Rico

    Science.gov (United States)

    Moser, F. C.; Allen, M. R.; Barberena-Arias, M.; Clark, J.; Harris, L.; Maldonado, P. M.; Olivo-Delgado, C.; Pierson, J. J.

    2017-12-01

    Over the last five years our multidisciplinary team explored different undergraduate research and professional development (PD) strategies to improve early stage Hispanic student retention in marine science with the objective of interesting them in pursuing degrees that may ultimately lead to geoscience careers. This research led to the 2016 launch of our current project, Centro TORTUGA (Tropical Oceanography Research Training for Undergraduate Academics). Our overarching goal is to increase the number of underrepresented students from minority serving institutions in geoscience-relevant disciplines and careers. Critical to success is building a program rich in both research and PD. Based on qualitative and quantitative evaluations we found students benefited from PD efforts to increase skills in areas such as: 1) speaking and writing English; 2) science communication; 3) teamwork; 4) project management; and 5) completing internship/graduate school applications. To build student self-confidence, networking, and science skills Centro Tortuga involves students' families, bridges cultural gaps across research and non-research institutions inside and outside of Puerto Rico, and provides a gathering place (Centro TORTUGA) for students. With our partners, Universidad del Turabo (UT), Universidad Metropolitana (UMET), and University of Maryland Center for Environmental Sciences, we are now testing a 12-month integrated research and PD curriculum. Initial results suggest areas for improved student training include: 1) science communication (reports and graphs); 2) science ethics; and 3) poster and oral presentations. Students also identified specific preparation they would like included in the Centro TORTUGA curriculum.

  1. CEREN: un centro enfocado en la calidad de vida de la población infantil

    OpenAIRE

    Centeno, Analía

    2016-01-01

    El Centro de Estudios en Nutrición y Desarrollo Infantil (CEREN) aborda e interviene en problemáticas de alimentación, nutrición, cuidados, crecimiento y desarrollo infantil. Fue creado con un claro enfoque social, integral y multidisciplinario con el fin de mejorar la calidad de vida de la población infantil de la Provincia.

  2. Pensando sobre los "centros abiertos": Una contribución desde Brasil

    Directory of Open Access Journals (Sweden)

    Verónica Regina Müller

    1999-11-01

    Full Text Available Este artículo aborda algunos principios que se consideran básicos para el funcionamiento de un "centro abierto" en Brasil. El artículo resalta el absoluto respeto que debe haber hacia la cultura de los niños y jóvenes que viven en la calle y frecuentan el centro. Se comenta inicialmente el concepto de ciudadanía, concepto que significa un principio de trabajo en los centros abiertos. A partir de ahí, se derivan comentarios sobre el significado de otros temas como la participación, la responsabilidad, el respeto, la implicación, la identidad, la cultura y la libertad. Finalmente, se describe la metodología de trabajo de los centros abiertos. AbstractThis paper deals with some essential principles for the operation of an "open center" in Brazil. It emphasizes the thorough respect that should be kept towards the culture of children and youngsters who live in the streets and attend the center. First, the concept of citizenship is discussed, a concept that means a principle in the "open centers". Comments about the meaning of other issues are derived from that point: participation, responsibility, respect, involvement, identity, culture and freedom. Finally, there is a description of the open centers’ operational methodology.Keywords: Street children, childrens rights, homeless people, outreach programs.

  3. Desafíos en la transferencia de tecnología a los centros educativos

    Directory of Open Access Journals (Sweden)

    José PEIRATS CHACÓN

    2013-07-01

    Full Text Available Partimos del modelo de transferencia de tecnología para analizar cómo los centros escolares reciben e incorporan a sus actividades los equipamientos tecnológicos. Particularmente analizamos las innovaciones generadas por esos procesos en el plano organizativo de los centros como receptores de la tecnología. Los datos analizados se desagregan de una investigación que actualmente se está realizando en 12 comunidades autónomas sobre el programa Escuela 2.0. En esta fase manejamos estadígrafos descriptivos y referencias de algunas de las entrevistas y de las observaciones de aula realizadas en los centros que participan en el proyecto «centro educativo inteligente». Los primeros análisis nos permiten señalar que en el caso del sistema escolar se sigue un patrón de transferencia muy peculiar: alta dependencia de las instancias políticas, se pone más énfasis en el equipamiento instrumental que en el conocimiento y, finalmente, escasa preparación previa de la organización receptora.

  4. CENTRO DE FORMAÇÃO DE RECURSOS HUMANOS EM TRANSPORTES URBANOS - CEFTRU

    Directory of Open Access Journals (Sweden)

    Jose Augusto Abreu Sá Fortes

    2010-04-01

    Full Text Available

    O presente trabalho irá apresentar questões referentes a criação do Centro de Formação de Recursos Humanos em Transportes Urbanos - CEFTRU. Tal Centro é um projeto bilateral entre os governos brasileiro e japonês, de iniciativa do Mestrado em Transportes Urbanos da Universidade de Brasília (UnB, sob os auspícios de Ministério das Relações Exteriores - Agencia Brasileira de Cooperação - MRE/ABC e da Japan International Cooperation Agency - JICA. O projeto visa a constituição e a posterior consolidação de um centro de excelência para a capacitação e a reciclagem de pessoal de nível superior, médio e fundamental em transportes urbanos, envolvendo as áreas de planejamento, gestão e operação do sistema, com impactos socioeconômicos para as populações urbanas. O Centro tem por objetivo melhorar a qualificação de pessoal envolvido com os transportes urbanos da administração publica e privada, englobando o território nacional, nas áreas de meio ambiente, informática e ensino a distancia e tecnologia de transportes e tráfego.

  5. Size, physiological quality, and green seed occurrence influenced by seeding rate in soybeans

    Directory of Open Access Journals (Sweden)

    André Sampaio Ferreira

    2017-05-01

    Full Text Available The seeding rate influences the intraspecific competition, which might affect the development and quality of seeds in soybean. However, the impact of seeding rate on the physical and physiological qualities of soybean seeds needs to be better elucidated. This study aimed to evaluate the effects of soybean plant density on the seed size as well as the effects of the interaction between the plant density and seed size on the seed mass, green seed occurence, and physiological seed quality. The experiments were carried out in the growing seasons of the years 2013/14 and 2014/15 in a Latossolo Vermelho distroférrico, under a randomized complete block design, using the NK 7059 RR cultivar with six replications. Four plant densities (150, 300, 440, and 560 thousand viable seeds ha–1 were evaluated. After the classification of seeds into four sizes, using a set of sieves, a 4 ×4 factorial scheme was used for the statistical analysis of the four plant densities and four seed sizes. The seed samples were evaluated for the seed mass, green seed percentage, germination, and vigor. Under thermal and water stress during seed development, an increase in the seeding rate led to a reduction in the green seed occurrence and an increase in the seed size and mass. However, in the absence of thermal and water stress, the seed size and mass were not altered by the seeding rate and, there was no occurrence of green seeds.

  6. Wheat and barley seed systems in Ethiopia and Syria

    NARCIS (Netherlands)

    Bishaw, Z.

    2004-01-01

    Keywords: Wheat,Triticumspp., Barley,Hordeumvulgare L., Seed Systems, Formal Seed Sector, Informal Seed Sector, National Seed Program, Seed Source, Seed Selection, Seed Management, Seed Quality,

  7. Centro cívico de Ichihara – Japón

    Directory of Open Access Journals (Sweden)

    Funakoshi, T.

    1975-10-01

    Full Text Available Occuping somewhat more than 1/10 of a 160,000 m2 site rises the Civic Centre of Ichihara that comprises: Social Centre; Municipal Government with Prefecture and Administration; Sociological-educational Centre; Parliament; Welfare Centre and Power Station. The plot is divided into two parts by a highway, with the Social Centre in the smallest part and in the other the remaining buildings are distributed, grouped on both sides of a pedestrian bridge that connects the buildings. The project of the entire complex has been developed starting from the elementary spaces until urban scale was attained; the composition of each space has been borne out of the mutual relations between men. In this Centre an attempt has been made to interpenetrate all the zones so as to achieve a visual relation between them. The Civic Centre is being completed by a spacious parking lot, paths and extensive gardens.Ocupando algo más de la décima parte de una parcela de 160.000 m2 se levanta el Centro Cívico de Ichihara, que comprende: Centro Social; Ayuntamiento con Prefectura y Administración; Centro Sociológico-educacional; Parlamento; Centro de Bienestar Social, y Central de Energía. El solar está dividido en dos partes por una autopista, con el Centro Social en la zona más pequeña, y en la otra se distribuye el resto de los edificios, agrupados a los lados de un gran puente peatonal que los comunica. El proyecto de todo el conjunto se ha desarrollado partiendo de los espacios elementales hasta llegar a la escala urbana; la composición de cada espacio nace de las relaciones mutuas entre los hombres. En este Centro se ha llevado a cabo un intento de interpenetrar todas las zonas, para permitir una relación visual entre ellas. El Centro Cívico se completa con numerosas plazas de aparcamiento, viales y amplias zonas ajardinadas.

  8. A system for generating virtual seeds

    Directory of Open Access Journals (Sweden)

    Sako Y.

    1998-01-01

    Full Text Available Seed analysts need to identify seeds, and seed catalogs are used as a reference to accomplish this task. Conventional seed catalogs supply two-dimensional photographs and hand-drawn diagrams. In this study, a new, three-dimensional representation of seeds is developed to supplement these traditional photographs and drawings. QuickTime VR is a promising method for viewing three-dimensional objects on a computer screen. It permits manipulation of an object by rotating and viewing it from any pre-specified angle at an interactive speed, allowing the viewer the sense of examining a hand-held object. In this study, QuickTime VR object movies of seeds were created as interactive "movies" of seeds that can be rotated and scaled to give the viewer the sensation of examining actual seeds. This approach allows the examination of virtual seeds from any angle, permitting more accurate identification of seeds by seed analysts.

  9. Seed selection by earthworms : chemical seed properties matter more than morphological traits

    OpenAIRE

    Clause, J.; Forey, E.; Eisenhauer, N.; Seal, C.E.; Soudey, A.; Colville, L.; Barot, Sébastien

    2017-01-01

    Aims : The passage of seeds through the earthworm gut potentially damages seeds, altering seed and seedling performances depending on seed traits. This work was conducted to study to what extent chemical and morphological seed traits determine the seed attractiveness for earthworms. Methods : We tested seed selection via the ingestion and digestion of 23 grassland plant species spanning a range of 14 morphological and chemical traits by two common earthworm species: the anecic Lumbricus te...

  10. Effects of seed fermentation method on seed germination and vigor ...

    African Journals Online (AJOL)

    BERTIN

    2013-11-27

    Nov 27, 2013 ... methods (fermented in ambient air, plastic bag stored in ambient or in plastic bag buried) were tested ... fruits into plastic bag that was exposed in ambient air in the field; SFD, seeds ..... Concepts and technologies of selected.

  11. Improving the traditional sesame seed planting with seed pelleting

    African Journals Online (AJOL)

    PRECIOUS

    2009-11-16

    Nov 16, 2009 ... 1Department of Agricultural Machinery, Faculty of Agriculture, Adnan Menderes University, Turkey. 2Fethiye ... the pelleted sesame seeds improved the yield significantly ... Sesame holds a special importance in the world's oil.

  12. Laser treatment of radish seed

    International Nuclear Information System (INIS)

    Kartalov, P.; Nidal, T.

    1987-01-01

    Trials were conducted in unheated plastic greenhouses in 1985-1986 to test the effect of laser treatment on radish seed. Seed of cv Saxia was irradiated with helio-neon laser of 632.8 Nm wave length at: 2-, 4- and 6-fold irradiation. Results showed that plants of all variants emerged almost simultaneously. The root mass was greatest for plants obtained from 4-fold irradiated seed. Treatment enhanced root production in 1985, and in 1986 4-fold irradiation boosted yield by 15%

  13. Studies on the Vigour of Soybean Seeds : II. Varietal Differences in Seed Coat Quality and Swelling Components of Seed during Moisture Imbibition

    OpenAIRE

    Mugnisjah, Wahju Qamara; Shimano, Itaru; Matsumoto, Shigeo; 島野, 至; 松本, 重男

    1987-01-01

    Laboratory experiment was conducted to elucidate the physiological factor determining the association of seed size and seed coat quality with varietal differences in seed vigour, and to pursue an alternative on the mechanism of varietal differences in seed resistance to field weathering. Results of this study revealed that seed polymer change (seed volume change minus seed weight change during moisture imbibition) was the physiological factor determining the association of seed size and seed ...

  14. Seed cryopreservation of Fraxinus angustifolia Vahl

    African Journals Online (AJOL)

    Università

    2013-04-17

    control) and liquid nitrogen-treated seeds were .... 76.0 ± 4.0 (NT in GA3), with an intermediary value of 70.0. ± 5.0% (Cryo seeds in water .... in November, suggesting a loss of dormancy during seed maturation. Furthermore, seed ...

  15. Storage requirements for sugar maple seeds

    Science.gov (United States)

    Harry W. Yawney; Clayton M., Jr. Carl

    1974-01-01

    Sugar maple seeds, collected from three trees in northern Vermont, were stored at four temperatures (18, 7, 2, and -10ºC) in combination with four seed moisture contents (35, 25, 17, and 10 percent). Seed moisture content and storage temperature significantly affected keeping ability, and these factors were highly interrelated. Seeds from all trees kept best...

  16. 7 CFR 948.6 - Seed potatoes.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Seed potatoes. 948.6 Section 948.6 Agriculture... and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE IRISH POTATOES GROWN IN COLORADO Order Regulating Handling Definitions § 948.6 Seed potatoes. Seed potatoes or seed means any potatoes...

  17. 7 CFR 201.57 - Hard seeds.

    Science.gov (United States)

    2010-01-01

    ... REGULATIONS Germination Tests in the Administration of the Act § 201.57 Hard seeds. Seeds which remain hard at the end of the prescribed test because they have not absorbed water, due to an impermeable seed coat... percentage of germination. For flatpea, continue the swollen seed in test for 14 days when germinating at 15...

  18. Brassica rapa L. seed development in hypergravity

    NARCIS (Netherlands)

    Musgrave, M.E.; Kuang, A.; Allen, J.; Blasiak, J.; van Loon, J.J.W.A.

    2009-01-01

    Previous experiments had shown that microgravity adversely affected seed development in Brassica rapa L. We tested the hypothesis that gravity controls seed development via modulation of gases around the developing seeds, by studying how hypergravity affects the silique microenvironment and seed

  19. Evaluation of Lettuce Genotypes for Seed Thermotolerance

    Science.gov (United States)

    Thermoinhibition of lettuce (Lactuca sativa L.) seed germination is a common problem associated with lettuce production. Depending on lettuce cultivars, seed germination may be inhibited when temperatures exceed 28oC. The delay or inhibition of seed germination at high temperatures may reduce seedli...

  20. Analysis of seed quality in NS sunflower hybrid seed processed between 2010 and 2014

    Directory of Open Access Journals (Sweden)

    Jokić Goran

    2015-01-01

    Full Text Available This paper analyzed the processed seed of five sunflower hybrid seed developed at the Institute of Field and Vegetable Crops in Novi Sad. The cultivars were Rimi PR, Duško, NS Dukat, Sumo 1 PR and Sremac. The analysis was conducted on seed lots processed between 2010 and 2014 and involved the following parameters: seed purity percentage, 1000-seed weight, germination energy, germination, seed moisture, number of weed seeds per 1000 grams of seed. The results of the study produced the following average values: seed purity - 99.72%, 1000-seed weight - 67.59g, germination energy - 88.2%, germination - 91.8%, seed moisture - 8.3%. There were not found weeds seeds as well as pathogens on the seed samples, these values are all within the legally prescribed limits.

  1. Autoradiography for iodine-125 seeds

    International Nuclear Information System (INIS)

    Alberti, W.; Divoux, S.; Pothmann, B.; Tabor, P.; Hermann, K.P.; Harder, D.

    1993-01-01

    To study the interior design of model 6702 and 6711 iodine-125 seeds, contact autoradiographs were performed using mammography film. Improved resolution was obtained using a pin-hole camera with a hole of 0.1 mm x 0.1 mm. With these techniques, qualitative determination of the relative activity distribution within each seed was possible. The number of the activated resin spheres and the positions of the centers of these spheres can be exactly determined. A model calculation shows that variations in the arrangement of the activated spheres within a seed have a moderate influence on the dose distribution at source distances below 10 mm. Knowing the exact source configuration may be useful when comparing dose calculations with measured data for model 6702 125 I seeds which are currently employed in ophthalmic plaque and implant therapy of other tumors. 16 refs., 5 figs., 2 tabs

  2. Ethylene, seed germination, and epinasty.

    Science.gov (United States)

    Stewart, E R; Freebairn, H T

    1969-07-01

    Ethylene activity in lettuce seed (Lactuca satina) germination and tomato (Lycopersicon esculentum) petiole epinasty has been characterized by using heat to inhibit ethylene synthesis. This procedure enabled a separation of the production of ethylene from the effect of ethylene. Ethylene was required in tomato petioles to produce the epinastic response and auxin was found to be active in producing epinasty through a stimulation of ethylene synthesis with the resulting ethylene being responsible for the epinasty. In the same manner, it was shown that gibberellic acid stimulated ethylene synthesis in lettuce seeds. The ethylene produced then in turn stimulated the seeds to germinate. It was hypothesized that ethylene was the intermediate which caused epinasty or seed germination. Auxin and gibberellin primarily induced their response by stimulating ethylene production.

  3. La actividad físico-deportiva, sus beneficios en centros penitenciarios. Una aplicación en el centro penitenciario de Burgos.

    OpenAIRE

    Martínez Antón, Miguel; Fernández Ciruelos, Álvaro

    2016-01-01

    En el presente artículo se consideran, a la luz de algunos estudios realizados, los beneficios físicos, psicológicos y sociales que puede generar la práctica físico-deportiva en la población reclusa, además de su posible influencia en los procesos de reeducación y reinserción social. Sirven de referencia la Ley General Penitenciaria (1979) y el Reglamento Penitenciario (1996). Se hace una aplicación al Centro Penitenciario de Burgos (España), mostrando la programación llevada a...

  4. Lack of caching of direct-seeded Douglas fir seeds by deer mice

    International Nuclear Information System (INIS)

    Sullivan, T.P.

    1978-01-01

    Seed caching by deer mice was investigated by radiotagging seeds in forest and clear-cut areas in coastal British Columbia. Deer mice tend to cache very few Douglas fir seeds in the fall when the seed is uniformly distributed and is at densities comparable with those used in direct-seeding programs. (author)

  5. Seed mass and mast seeding enhance dispersal by a neotropical scatter-hoarding rodent

    NARCIS (Netherlands)

    Jansen, P.A.; Bongers, F.J.J.M.; Hemerik, L.

    2004-01-01

    Many tree species that depend on scatter-hoarding animals for seed dispersal produce massive crops of large seeds at irregular intervals. Mast seeding and large seed size in these species have been explained as adaptations to increase animal dispersal and reduce predation. We studied how seed size

  6. Chloroxyanion residue on seeds and sprouts after chlorine dioxide sanitation of alfalfa seed

    Science.gov (United States)

    The effects of a 6-h chlorine dioxide sanitation of alfalfa seed (0, 50, 100, and 200 mg/kg seed) on total coliform bacteria, seed germination, and on the presence of chlorate and perchlorate residues in seed rinse, seed soak, and in alfalfa sprouts was determined. Chlorate residues in 20000 ppm cal...

  7. Moringa Seed Oils

    Directory of Open Access Journals (Sweden)

    Joana O. Ilesanmi

    2010-01-01

    Full Text Available This study was conducted to determine the effects of neem (Azadirachta indica A. Juss and moringa (Moringa oleifera seed oils on the storability of cowpea grain. Cowpea samples were treated with various concentrations (0.5, 1.0, and 1.5 mL/200 g cowpea of pure neem and moringa oils and their mixtures in ratios of 1:1, 1:2, and 1:3. The treated cowpea samples were stored for 180 days. Data were collected every 30 days on number of eggs laid, total weevil population, and percentage of uninfested grains and analysed statistically. Significantly different means were compared using LSD at <.05. Increasing oil concentration resulted in better cowpea protection, for example, in oviposition where the control had 6513 eggs, only 8 eggs were recorded in pure neem oil-treated sample at 0.5 mL/200 g. Generally, better results were obtained with higher oil concentrations either in their pure forms or mixtures. The control had a total weevil population of 4988, while most treated samples had none. The control samples had 0% uninfested grains, while 73–94% of uninfested grains were observed in treated samples after 6 months of storage. Therefore, mixture of the oils at 1.5 mL/200 g can be effectively used to store cowpea.

  8. Diamond Synthesis Employing Nanoparticle Seeds

    Science.gov (United States)

    Uppireddi, Kishore (Inventor); Morell, Gerardo (Inventor); Weiner, Brad R. (Inventor)

    2014-01-01

    Iron nanoparticles were employed to induce the synthesis of diamond on molybdenum, silicon, and quartz substrates. Diamond films were grown using conventional conditions for diamond synthesis by hot filament chemical vapor deposition, except that dispersed iron oxide nanoparticles replaced the seeding. This approach to diamond induction can be combined with dip pen nanolithography for the selective deposition of diamond and diamond patterning while avoiding surface damage associated to diamond-seeding methods.

  9. Desarrollo de un Protocolo de propagación in vitro de Geranium chilloense Wild. ex Kuth. Y Lupinus pubescens Benth. Para la obtención de plantas completas, para la primera etapa de restauración de las quebradas de Quito

    OpenAIRE

    Benavides Silva, Thaly Gabriela; Córdova Muñoz, Adriana Isabel

    2015-01-01

    Geranium chilloense Willd. ex Kunth known as geranio de los Chillos, is an ornamental plant, native of Los Andes it can be found in a wild way in the ravines of the Metropolitan District of Quito and it is part of the history of the native flora of Quito since has been described from the Alexander Humboldt and Aimé Bonpland expedition in 1802. Lupinus pubescens Benth, also known as Ashpa chocho or Allpa chocho, is an herbaceous, native and ornamental plant due to the beauty of his flowers, de...

  10. Análisis de Gestion Tecnológica en Centros de Investigación

    OpenAIRE

    Carmen Castrejón Mata; Roberto Hernandez Sampieri; Hector Ruiz Rueda

    2012-01-01

    La existencia de los laboratorios tecnologicos y su importancia en muchos paises es reconocida, al ser centros que integran las mejores tecnologías disponibles de diversas profesiones y disciplinas que las universidades y centros de investigación prestan o ponen al servicio de la sociedad. Pero más que laboratorios que ofrecen esa tecnología de punta a esas disciplinas, son centros que desarrollan conocimiento, teniendo como resultado inmediato nuevas soluciones, diseños a las problematicas q...

  11. Seed governance. From seed aid to seed system security in fragile areas

    NARCIS (Netherlands)

    Rietberg, P.I.; Gevers, H.; Hospes, O.

    2014-01-01

    Intergovernmental agencies and development organizations, including Cordaid, consider interventions directed at seed security of utmost importance to support smallholders recovering from conflict situations and disasters, and to contribute to revitalisation of local agricultural production and food

  12. Optimum harvest maturity for Leymus chinensis seed

    Directory of Open Access Journals (Sweden)

    Jixiang Lin

    2016-06-01

    Full Text Available Timely harvest is critical to achieve maximum seed viability and vigour in agricultural production. However, little information exists concerning how to reap the best quality seeds of Leymus chinensis, which is the dominant and most promising grass species in the Songnen Grassland of Northern China. The objective of this study was to investigate and evaluate possible quality indices of the seeds at different days after peak anthesis. Seed quality at different development stages was assessed by the colours of the seed and lemmas, seed weight, moisture content, electrical conductivity of seed leachate and germination indices. Two consecutive years of experimental results showed that the maximum seed quality was recorded at 39 days after peak anthesis. At this date, the colours of the seed and lemmas reached heavy brown and yellow, respectively. The seed weight was highest and the moisture content and the electrical conductivity of seed leachate were lowest. In addition, the seed also reached its maximum germination percentage and energy at this stage, determined using a standard germination test (SGT and accelerated ageing test (AAT. Thus, Leymus chinensis can be harvested at 39 days after peak anthesis based on the changes in parameters. Colour identification can be used as an additional indicator to provide a more rapid and reliable measure of optimum seed maturity; approximately 10 days after the colour of the lemmas reached yellow and the colour of the seed reached heavy brown, the seed of this species was suitable for harvest.

  13. Phenolics in the seed coat of wild soybean (Glycine soja) and their significance for seed hardness and seed germination.

    Science.gov (United States)

    Zhou, San; Sekizaki, Haruo; Yang, Zhihong; Sawa, Satoko; Pan, Jun

    2010-10-27

    Hardseededness in annual wild soybean (Glycine soja Sieb. Et Zucc.) is a valuable trait that affects the germination, viability, and quality of stored seeds. Two G. soja ecotypes native to Shandong Province of China have been used to identify the phenolics in the seed coat that correlate with the seed hardness and seed germination. Three major phenolics from the seed coat were isolated and identified as epicatechin, cyanidin 3-O-glucoside, and delphinidin 3-O-glucoside. Of the three phenolics, only the change of epicatechin exhibited a significant positive correlation with the change of hard seed percentages both under different water conditions during seed development and under different gas conditions during seed storage. Epicatechin also reveals a hormesis-like effect on the seed germination of G. soja. Epicatechin is suggested to be functionally related to coat-imposed hardseededness in G. soja.

  14. Equilibrium relative humidity as a tool to monitor seed moisture

    Science.gov (United States)

    Robert P. Karrfalt

    2010-01-01

    The importance of seed moisture in maintaining high seed viability is well known. The seed storage chapters in the Tropical Tree Seed Manual (Hong and Ellis 2003) and the Woody Plant Seed Manual (Bonner 2008a) give a detailed discussion and many references on this point. Working with seeds in an operational setting requires a test of seed moisture status. It is...

  15. Orientación psicológica en Centros de Planificación Familiar.

    OpenAIRE

    Margarita Recondo García; Antonio Villasana Cunchillos

    1988-01-01

    La intención básica de este trabajo es explicar cómo se realizaría la orientación psicológica en Centros de Planificación Familiar. Señalando, primero, los objetivos generales y específicos en Planificación Familiar y luego los objetivos específicos del psicólogo y sus etapas de trabajo en los Centros de Planificación Familiar. Se estudian las necesidades psicológicas de la comunidad, el rol del psicólogo y la organización del trabajo en Planificación Familiar.

  16. Centro de Recursos de Aprendizagem: biblioteca escolar para o século XXI

    Directory of Open Access Journals (Sweden)

    Kelley Cristine Gonçalves Dias Gasque

    2013-01-01

    Full Text Available Relato de experiência do planejamento, construção e funcionamento do Centro de Recursos de Aprendizagem, CRA, do Colégio Marista de Brasília. Mais do que local de acesso à informação, constitui-se espaço de aprendizagem e de conhecimento, integrado ao processo pedagógico da escola, com a tarefa de formar cidadãos críticos e autônomos. Conclui-se que apesar do êxito da biblioteca, para que seja efetivamente usada como Centro de Recursos de Aprendizagem, a escola deve-se adotar currículo mais flexível e métodos de resolução de problemas.

  17. El proteccionismo en retirada. Las dificultades del Centro Azucarero Argentino (1912-1923

    Directory of Open Access Journals (Sweden)

    Lenis, María

    2007-01-01

    Full Text Available The aim of this article is to analyze the impact that had the sanction of the so-called law Saavedra Lamas in the Centro Azucarero Argentino. Likewise it will try to explain of what way the arrival of the radicalism to the power, obliged the sugar trade union to change its strategies and practices of lobby. In this sense there will be contemplated the roll fulfilled by the Revista Azucarera, monthly publication of the Centro Azucarero, and for the representatives tucumanos in the Congress of the Nation. Finally, there will be examined the changes introduced by the statutory reform of 1923, especially there to will be attended the creation of the socalled regional commissions, especially that of Tucumán, and in that what measurement this process of decentralization was expressing the existing tensions among the sugar industrialists.

  18. A dinâmica locacional da avicultura e suinocultura no centro-oeste brasileiro.

    OpenAIRE

    Leopoldo Viriato Saboya

    2001-01-01

    Visando investigar a dinâmica locacional das empresas dos complexos aves e suínos estabelecidas na região Centro-Oeste brasileira, foi conduzida uma pesquisa empírica do processo de decisão locacional e dos fatores-chave na escolha do local produtivo, tendo como referencial teórico uma abordagem comportamental da Teoria da Localização. A pressuposição central deste estudo é a de que os preços mais baixos das matérias-primas básicas (em especial o milho) nos estados da região Centro-Oeste não ...

  19. MÉXICO: CENTRO DE ORIGEN DE LA DOMESTICACIÓN DEL GIRASOL

    Directory of Open Access Journals (Sweden)

    Robert Bye

    2009-01-01

    Full Text Available Hasta hace poco tiempo, el origen geográfico del girasol domesticado (Helianthus annuus había sido reportado en el área del sureste de los Estados Unidos de América. El análisis de documentos históricos de México y "semillas" arqueológicas recientemente descubiertas en Tabasco y Morelos, México, indican que los girasoles cultivados fueron importantes durante la época prehispánica y del virreinato en el centro de México. Cabe mencionar que los aquenios prehistóricos más grandes y más antiguos son de México. Aunque hoy en día las plantas silvestres son genéticamente distantes de los cultivares comerciales contemporáneos, las evidencias indican que México es el centro de origen más antiguo.

  20. The Seed Proteome Web Portal

    Directory of Open Access Journals (Sweden)

    Marc eGalland

    2012-06-01

    Full Text Available The Seed Proteome Web Portal (SPWP; http://www.seedproteome.com/ gives access to information both on quantitative seed proteomic data and on seed-related protocols. Firstly, the SPWP provides access to the 475 different Arabidopsis seed proteins annotated from 2 dimensional electrophoresis (2DE maps. Quantitative data are available for each protein according to their accumulation profile during the germination process. These proteins can be retrieved either in list format or directly on scanned 2DE maps. These proteomic data reveal that 40% of seed proteins maintain a stable abundance over germination, up to radicle protrusion. During sensu stricto germination (24 h upon imbibition about 50% of the proteins display quantitative variations, exhibiting an increased abundance (35% or a decreasing abundance (15%. Moreover, during radicle protrusion (24 h to 48 h upon imbibition, 41% proteins display quantitative variations with an increased (23% or a decreasing abundance (18%. In addition, an analysis of the seed proteome revealed the importance of protein post-translational modifications as demonstrated by the poor correlation (r2 = 0.29 between the theoretical (predicted from Arabidopsis genome and the observed protein isoelectric points. Secondly, the SPWP is a relevant technical resource for protocols specifically dedicated to Arabidopsis seed proteome studies. Concerning 2D electrophoresis, the user can find efficient procedures for sample preparation, electrophoresis coupled with gel analysis and protein identification by mass spectrometry, which we have routinely used during the last 12 years. Particular applications such as the detection of oxidized proteins or de novo synthetized proteins radiolabeled by [35S]-methionine are also given in great details. Future developments of this portal will include proteomic data from studies such as dormancy release and protein turnover through de novo protein synthesis analyses during germination.

  1. n-th Roots in finite polyhedral and centro-polyhedral groups

    Indian Academy of Sciences (India)

    Probability in finite groups; roots of elements; polyhedral groups; centro- polyhedral groups. 2010 Mathematics ... An element g of a finite group G is said to have an n-th root if there exists an element h ∈ G such that g = hn (n is a ..... For the proof of the fourth part, we must consider two cases: (i) m is odd and 4|d,. (ii) m, d are ...

  2. Development and Dissemination of the El Centro Health Disparities Measures Library.

    Science.gov (United States)

    Mitrani, Victoria Behar; O'Day, Joanne E; Norris, Timothy B; Adebayo, Oluwamuyiwa Winifred

    2017-09-01

    This report describes the development and dissemination of a library of English measures, with Spanish translations, on constructs relevant to social determinants of health and behavioral health outcomes. The El Centro Measures Library is a product of the Center of Excellence for Health Disparities Research: El Centro, a program funded by the National Institute on Minority Health and Health Disparities of the U.S. National Institutes of Health. The library is aimed at enhancing capacity for minority health and health disparities research, particularly for Hispanics living in the United States and abroad. The open-access library of measures (available through www.miami.edu/sonhs/measureslibrary) contains brief descriptions of each measure, scoring information (where available), links to related peer-reviewed articles, and measure items in both languages. Links to measure websites where commercially available measures can be purchased are included, as is contact information for measures that require author permission. Links to several other measures libraries are hosted on the library website. Other researchers may contribute to the library. El Centro investigators began the library by electing to use a common set of measures across studies to assess demographic information, culture-related variables, proximal outcomes of interest, and major outcomes. The collection was expanded to include other health disparity research studies. In 2012, a formal process was developed to organize, expand, and centralize the library in preparation for a gradual process of dissemination to the national and international community of researchers. The library currently contains 61 measures encompassing 12 categories of constructs. Thus far, the library has been accessed 8,883 times (unique page views as generated by Google Analytics), and responses from constituencies of users and measure authors have been favorable. With the paucity of availability and accessibility of translated

  3. Religión, fiestas y centros ceremoniales mayas de la Cruz Parlante

    Directory of Open Access Journals (Sweden)

    Manuel Buenrostro Alba

    2015-07-01

    Full Text Available En el trabajo se describe el principal santo de los mayas de Quintana Roo, la Cruz Parlante, así como los centros ceremoniales y las fiestas tradicionales relacionadas con esta advocación. Se incluyen datos etnográficos que describen el contexto en el que se centra el estudio. La Cruz Parlante permite a los mayas de Quintana Roo seguir existiendo y los protege, pero para ello debe estar custodiada por los propios mayas.

  4. Proceso de virtualización de un centro de procesamiento de datos (CPD)

    OpenAIRE

    Castro Santero, Juan

    2016-01-01

    Este trabajo trata del proceso de virtualización de un centro de procesamiento de datos (CPD), por el que se explica paso a paso este proceso. Aquest treball tracta del procés de virtualització d'un centre de processament de dades (CPD), pel que s'explica pas a pas aquest procés. Bachelor thesis for the Computer Science program.

  5. Report on seed born diseases in organic seed and propagation material

    OpenAIRE

    Micheloni, C.; Plakolm, G.; Schärer, H.

    2007-01-01

    The key questions which will be addressed in this report are: • Are seed born diseases an important factor that prevents seed companies from producing organic seeds and organic farmers from using them? • Which seed treatments are available in organic farming? Which treatments are or will be acceptable? To which degree are they effective? • Are the thresholds for seed born diseases different among Member States? Can this cause unfair competition among farmers and seed producers? • ...

  6. Storage sites in seeds of Caesalpinia echinata and C. ferrea (Leguminosae with considerations on nutrients flow

    Directory of Open Access Journals (Sweden)

    Simone de Pádua Teixeira

    2008-02-01

    Full Text Available The seeds of Caesalpinia echinata and C. ferrea behaved as typical endospermic seeds, despite their different morphological classification (exendospermic seeds were described for C. echinata and endospermic seeds for C. ferrea. Then, the aim of this work was to compare, under ultrastructural and histochemical terms, the nature of the storage substances and their accumulation sites, as well as the nutrient flow in seeds of these species. Cotyledons in C. echinata accumulate carbohydrates, lipids and proteins, which are mobilized from the outer to the inner parts as revealed by the position of plasmodesmata. Endosperm in C. ferrea accumulates carbohydrates and in C. echinata accumulates substances during the initial embryogenic phases. Such tissue develops a chalazal haustorium that is responsible for the transport of substances into the endosperm itself and from it into the embryo, confirmed by the presence of transference cells.As sementes de Caesalpinia echinata e C. ferrea comportam-se como endospérmicas, apesar de descritas na literatura como exendospérmicas e endospérmicas, respectivamente. Desta forma, o objetivo deste trabalho foi comparar, em termos ultra-estrutural e histoquímico, a natureza das substâncias de reserva e seus tecidos acumuladores, bem como o fluxo de nutrientes nas sementes destas espécies. Os cotilédones em C. echinata acumulam carboidratos, lipídios e proteínas, mobilizados da periferia para o centro, como visto pelo posicionamento dos plasmodesmas. O endosperma em C. ferrea acumula carboidratos e lipídios, e em C. echinata, acumula substâncias nos estádios iniciais da embriogênese. Este tecido desenvolve um haustório calazal agressivo, que transporta substâncias para o endosperma propriamente dito e deste para o embrião, fato confirmado pela presença de células de transferência no endosperma.

  7. An Ecological Friendly Dragee Technic Application on Crop Seeds

    Science.gov (United States)

    László, M.

    2009-04-01

    Summary: In Brazíl, in EMBRAPA/CNPH was developing a dragée technic for seeds of crops and vegetables of carrot (Daucus carota L.), onion (Allium cepa L.), tomato (Lycopersicum esculentum Mill.), lettuce (Lactuca sativa L.), micro tubers of potato (Solanum tuberosum L.), Andropogon ssp. and Eucalyptus ssp. using as inert material the dolomite (CaCO3 96%) powder fractions (0.05 to 1.00 mm) and as cementing adhesives the polyvinyl acetate (PVA) and Gumma arabicum (Ga) (0 to 80% in water). On dragée process were using fungicides with agent of metalaxyl, iprodyon, benomyl, mankoceb (1 to 5 g fungicide/kg dolomite powder) and nutrients (N, P2O5, K2O 0.05 to 0.5, MgO, Fe, Zn, Mn, B, Cu, Mo, Co 0.000005 to 0.1 g/ kg dolomite powder) were applied from 1990. to 1993. Best results obtained with fraction of dolomite powder of 0.07 to 0.60 mm of diameter and adhesive of polyvinyl acetate (PVA) with the concentration between 10 to 20%. The dragées obtained presented a mechanical resistance of 0.5 kg/cm2 had show a germination higher than 90% without any phytotoxical effects to the seedlings. Fungicides with agent of metalaxyl, iprodyon, benomyl, mankoceb with the concentration 3-3 and mineral nutrients N, P2O5, K2O, MgO, Fe, Zn, Mn, B, Cu, Mo, Co with the concentration 0.2, 0.1, 0.15, 0.06, 0.00045, 0.00025, 0.0011, 0.00057, 0.00045, 0.000084, 0.00001 g/kg dolomite powder were showed best reultes, respectively. With this dragée utilization we could make possible the intensive use of highest quality seeds wich because of their higher costs are prohibitive in the actual systems of production. Keywords:crops, vegetables, seeds, dragée, nutrients, fungicides Introduction: In Latin America, Brazíl is the far greatest producer of crops and vegetables, with an annual production estimated at 9.631.000 tons in the value of 1.576 million dollars. Fifty species are cultivated of which 35 are producing botanical seeds including 162 varieties commercialized. The average national

  8. The radiological safety in the use of nuclear technique -activities developed by Centro de Desenvolvimento da Tecnologia Nuclear - CNEN

    International Nuclear Information System (INIS)

    Wakabayashi, T.; Pereira, E.G.; Hirayama, T.

    1991-01-01

    The activities developed by the Centro de Desenvolvimento da Tecnologia Nuclear - CDTN supporting the users of nuclear techniques are described. The methodology used and future plans for the group are shown. (E.G.)

  9. Alexitimia, resiliencia y creencias paranormales en personas mayores en un centro institucionalizado

    Directory of Open Access Journals (Sweden)

    Inmaculada Méndez

    2015-08-01

    Full Text Available La alexitimia hace referencia a la dificultad para comprender e identificar los propios sentimientos y los de los demás. El proceso de adaptación a un centro residencial es una de las situaciones estresantes a las que puede enfrentarse la persona mayor. Para poder sobreponerse ante dichas situaciones es fundamental la capacidad de resiliencia e incluso existen personas que buscan apoyo en la religiosidad o en las creencias en lo paranormal. En este trabajo se estudió la relación entre aleximitia, resiliencia y creencias paranormales en un grupo de 35 personas mayores (21 mujeres con edades entre 66 y 95 años de un centro institucionalizado. Se administraron la escala TAS-20 para la evaluación de la alexitimia, la Escala de Resiliencia CD-RISC y la Escala Mejorada de Creencias Paranormales. Entre los principales resultados cabe destacar que los sujetos con mayores Dificultades para identificar sentimientos son los que presentaban un menor Control personal; los sujetos con mayores Dificultades para identificar sentimientos son los que menor creencia poseían de las Formas de vida extraordinaria y los sujetos con mayor capacidad de Control Personal son los que mayor creencia tenían de las Formas de vida extraordinaria. Se discuten las aplicaciones que los profesionales pueden poner en marcha en centros institucionalizados de personas mayores.

  10. El Centro Geothermal Utility Core Field Experiment environmental-impact report and environmental assessment

    Energy Technology Data Exchange (ETDEWEB)

    1979-08-01

    The City of El Centro is proposing the development of a geothermal energy utility core field experiment to demonstrate the engineering and economic feasibility of utilizing moderate temperature geothermal heat, on a pilot scale, for space cooling, space heating, and domestic hot water. The proposed facility is located on part of a 2.48 acre (1 hectare) parcel owned in fee by the City in the southeastern sector of El Centro in Imperial County, California. Geothermal fluid at an anticipated temperature of about 250/sup 0/F (121/sup 0/C) will heat a secondary fluid (water) which will be utilized directly or processed through an absorption chiller, to provide space conditioning and water heating for the El Centro Community Center, a public recreational facility located approximately one-half mile north of the proposed well site. The geothermal production well will be drilled to 8500 feet (2590m) and an injection well to 4000 feet (1220m) at the industrially designated City property. Once all relevant permits are obtained it is estimated that site preparation, facility construction, the completion and testing of both wells would be finished in approximately 26 weeks. The environmental impacts are described.

  11. Influence of Fungicides Application and Seed Processing on Sunflower Seed Quality

    OpenAIRE

    Šimić, Branimir; Svitlica, Brankica; Ćosić, Jasenka; Andrić, Luka; Rozman, Vlatka; Postić, Jelena; Liović, Ivica

    2009-01-01

    The aim of the research was to determine influence of methods of seed processing and application of fungicides on mass of 1000 seeds, intergrowth energy and seed germination of sunflower hybrids ‘Favorit’ and ‘Apolon’ in 2005 and 2006. Selected untreated seeds of both sunflower hybrids (control) had a minimal mass of 1000 seeds (55-59 g), intergrowth energy (18-37 %) and seed germination (39-52 %). In both years of research maximal seed quality, mass of 1000 seeds (67-69 g), intergrowth energ...

  12. Neutron irradiation of seeds 2

    Energy Technology Data Exchange (ETDEWEB)

    1968-10-01

    The irradiation of seeds with the fast neutron of research reactors has been hampered by difficulties in accurately measuring dose and in obtaining repeatable and comparable results. Co-ordinated research under an international program organized by the FAO and IAEA has already resulted in significant improvements in methods of exposing seeds in research reactors and in obtaining accurate dosimetry. This has been accomplished by the development of a standard reactor facility for the neutron irradiation of seeds and standard methods for determining fast-neutron dose and the biological response after irradiation. In this program various divisions of the IAEA and the Joint FAO/IAEA Division co-operate with a number of research institutes and reactor centres throughout the world. Results of the preliminary experiments were reported in Technical Reports Series No. 76, ''Neutron Irradiation of Seeds''. This volume contains the proceedings of a meeting of co-operators in the FAO/IAEA Neutron Seed Irradiation Program and other active scientists in this field. The meeting was held in Vienna from 11 to 15 December 1967. Refs, figs and tabs.

  13. Neutron irradiation of seeds 2

    International Nuclear Information System (INIS)

    1968-01-01

    The irradiation of seeds with the fast neutron of research reactors has been hampered by difficulties in accurately measuring dose and in obtaining repeatable and comparable results. Co-ordinated research under an international program organized by the FAO and IAEA has already resulted in significant improvements in methods of exposing seeds in research reactors and in obtaining accurate dosimetry. This has been accomplished by the development of a standard reactor facility for the neutron irradiation of seeds and standard methods for determining fast-neutron dose and the biological response after irradiation. In this program various divisions of the IAEA and the Joint FAO/IAEA Division co-operate with a number of research institutes and reactor centres throughout the world. Results of the preliminary experiments were reported in Technical Reports Series No. 76, ''Neutron Irradiation of Seeds''. This volume contains the proceedings of a meeting of co-operators in the FAO/IAEA Neutron Seed Irradiation Program and other active scientists in this field. The meeting was held in Vienna from 11 to 15 December 1967. Refs, figs and tabs

  14. BROTES POR NOROVIRUS EN RESIDENCIAS Y CENTROS SANITARIOS DE CATALUÑA

    Directory of Open Access Journals (Sweden)

    Pere Godoy

    2009-01-01

    Full Text Available Fundamentos. La baja dosis infectiva y las múltiples vías de transmisión facilitan la presentación de brotes de norovirus. El objetivo fue comparar la incidencia de brotes por norovirus en hospitales y residencias en Cataluña. Métodos. Se realizó un estudio descriptivo de la serie de brotes de norovirus en el período del 15/10/2004 al 30/10/2005. Se rellenó una encuesta epidemiológica para cada brote. Las variables fueron: número de expuestos, enfermos, mecanismo de transmisión, ámbito (centros sanitarios o residencias, región sanitaria, mes del año, y duración. Mediante técnicas de PCR se investigó la presencia de norovirus en muestras clínicas. Se calculó la incidencia en cada centro y la incidencia anual de brotes por centros. Las diferencias se determinaron con la prueba de c2 y la t de Student con un grado de significación (p inferior a 0,05. Resultados. Se detectaron 17 brotes, 6 en centros sanitarios y 11 en residencias. La tasa de ataque global fue del 33,4% (652/1951 y fue ligeramente superior en las residencias (35,2% que en los centros sanitarios (31,4%. El 94,1% (16/17 de los brotes se produjeron por transmisión persona a persona y sólo el 5,9% (1/17 por alimentos. La media de días entre el primer y último caso del brote fue de 11,4 (DE = 6,9. La duración media de los síntomas fue de 2,39 días (SD=1,6 y también fue superior en los pacientes hospitalizados 2,63 (SD=1,7 en comparación a los pacientes de residencias 1,97 (SD=1,7 (p < 0,0001. Conclusiones. Norovirus es responsable de un número importante de brotes por transmisión persona a persona. Se debe protocolizar su control para reducir su número y su duración.

  15. FAMILIA, INMIGRACIÓN Y COMUNICACIÓN CON EL CENTRO ESCOLAR: UN ESTUDIO COMPARATIVO

    Directory of Open Access Journals (Sweden)

    M.ª Ángeles Hernández Prados

    2016-01-01

    Full Text Available La importancia de establecer lazos de comunicación y colaboración mutua entre las familias de los escolares y los centros educativos para el desarrollo de la educación integral del alumnado, es hoy día una realidad indiscutible. Desde la perspectiva de la educación inclusiva, las relaciones entre sendas instituciones deben integrar a los padres y madres de todo el alumnado, también a los que poseen algún tipo de riesgo de exclusión social. Entre este colectivo se encuentran las familias inmigrantes. Por este motivo, en esta investigación hemos querido comparar la comunicación que se establece entre las familias y el centro educativo en el que cursan estudios sus hijos en la Comunidad Autónoma de la Región de Murcia (CARM, en función de su nacionalidad. Para ello se ha aplicado un cuestionario a 2494 familias de esta Comunidad en una investigación conjunta realizada por el Consejo Escolar de la Región de Murcia (CERM y la Universidad de Murcia. Los resultados indican que los padres y madres españoles conocen mejor el centro educativo de sus hijos, participan en mayor medida en la vida del mismo, contribuyen más al desarrollo del aprendizaje del alumnado desde el hogar, y poseen relaciones más positivas con el centro que las familias inmigrantes. Estas diferencias entre sendos colectivos son estadísticamente significativas a nivel global y también en las etapas educativas de Educación Infantil, Primaria y Educación Secundaria Obligatoria, pero no en Bachillerato. Estos resultados invitan a reflexionar sobre posibles pautas de actuación desde instancias político-académicas y la propia comunidad educativa que ayuden a integrar a los padres y madres del alumnado inmigrante en el centro escolar de sus hijos.

  16. [Dynamics of seed rain of Tripterygium hypoglaucum and soil seed bank].

    Science.gov (United States)

    Zhang, Zhi-Wei; Wei, Yong-Sheng; Liu, Xiang; Su, Shu; Qu, Xian-You; Wang, Chang-Hua

    2017-11-01

    Tripterygium hypoglaucum is an endangered species in arid areas of Xiannvshan Chongqing, China. The dynamic characteristics of seed rain and soil seed bank of T. hypoglaucum were studied in this paper.Results showed that T. hypoglaucum years of mature seeds distribution number up to October; the seed rain occurred from the last ten-day of September to in the first ten-day of November and the peak of scattered seed rain concentrated in the October.The numbers of soil seed bank at 2-5 cm soil layer,mainly concentrated in the 1.5-3.5 m range. T. hypoglaucum seeds to the wind as a force for transmission, the transmission ability is strong, but in the process of natural reproduction, full mature seed rate is low, the soil seed bank seeds seed short-lived factors these were unfavorable for the natural reproduction of T. hypoglaucum population. Copyright© by the Chinese Pharmaceutical Association.

  17. Factors influencing upon the incidence of seed migration in I-125 seed transperineal prostate implantation

    International Nuclear Information System (INIS)

    Itami, Jun; Onishi, Kayoko; Kanemura, Mikio

    2005-01-01

    Transperineal I-125 seed brachytherapy for prostate cancer is rapidly expanding in Japan. Seed migrations to lung and abdomen are well known complication in the seed brachytherapy. The rate of incidence and the predisposing factors were studied. From April 2004 through January 2005, 36 patients underwent transperineal I-125 seed brachytherapy for prostate cancer. In all patients loose I-125 seeds were inserted with Mick applicator according to modified peripheral loading pattern. One day, 1 week, and 1 month after the procedure, posteroanterior and lateral chest X-rays and abdominal X-ray were performed. Abdominal and chest seed migrations were seen in 11 (30.6%) and 14 (38.9%) patients, respectively. In total, 20 patients (55.6%) showed seed migrations. Forty-two I-125 seeds migrated out of 2,508 implanted seeds. Most of the migrations were seen until 1 month after the procedure. The preplanned number of the extraprostatic seeds had a statistically significant influence upon the incidence of seed migration. Seed migration is not a rare phenomenon in transperineal I-125 seed brachytherapy for prostate cancer. To confirm seed migration, X-ray examinations 1 month after the procedure are suited. At the preplanning, the number of extraprostatic seeds should be limited to minimal to decrease the incidence of seed migration. In future, the introduction of linked I-125 seeds is preferred. (author)

  18. Ash (Fraxinus excelsior) seed quality in relation to seed ...

    African Journals Online (AJOL)

    Jane

    2011-07-18

    Jul 18, 2011 ... bottles were seal-locked and kept in the accelerated ageing cham- ber at three ... Hundred (100) seeds of each treatment were performed in plastic ..... by heat stress: the activation state of Rubisco as a limiting factor in.

  19. Effects of seed fermentation method on seed germination and vigor ...

    African Journals Online (AJOL)

    BERTIN

    2013-11-27

    Nov 27, 2013 ... high, suggesting that wet soil is necessary for an on farm reliable evaluation of seed fermentation method in the .... with tap water, and sundried in ambient air until attaining 6 to 7% moisture. ..... arabica in Brazil. Int. J. Food ...

  20. Nutrient composition of Dacryodes edulis seed and seed coat mixture

    Directory of Open Access Journals (Sweden)

    C.U. OGUNKA-NNOKA

    2017-07-01

    Full Text Available This study investigated the nutrient composition of D. edulis seed and seed coat mixture. Qualitative and quantitative phytochemicals, proximate, and vitamin compositions were evaluated using standard methods. Saponins were very high, alkaloids, flavonoids, and tannins were high, while terpenoids were low, and glycosides, aldehydes, and steroids were absent. The quantitative phytochemical determination followed the order; saponin > kaempferol > rutin > catechin > tannin > sapogenin > lunamarine > phenol > ribalinidine > anthocyanin > oxalate > phytate. For the proximate composition, carbohydrates had the highest concentration, followed by lipids and fibre, while, protein concentration was the lowest. Vitamin E (5.42 mg/100g, vitamin C (3.24 mg/100g, and vitamin A (2.84 mg/100g were the highest occurring constituent vitamins while vitamin B12 (0.035 mg/100g and vitamin B2 (0.075 mg/100g were the least occurring vitamins. This study has shown the rich phytochemical composition of D. edulis seed and seed coat mixture while showing deficiencies in proteins, distinct vitamins, and ash contents.

  1. Chlorophyll in tomato seeds: marker for seed performance?

    NARCIS (Netherlands)

    Suhartanto, M.R.

    2002-01-01

    Using Xe-PAM, laser induced fluorometry and high performance liquid chromatography we found that chlorophyll was present in young tomato (cv. Moneymaker) seeds and was degraded during maturation. Fluorescence microscopy and imaging showed that the majority of chlorophyll is located in the

  2. The role of seed priming in improving seed germination and ...

    African Journals Online (AJOL)

    win7

    2013-11-13

    Nov 13, 2013 ... As a result, fresh and dry weights of shoot and root were improved. Seed priming alleviated the inhibitory effect of salt stress on germination and seedling growth of maize under salt stress. ... Salinization is more spreading in irrigated lands because of inappropriate management of irrigation and drainage.

  3. Volumen y dimensiones como predictores del peso de semilla en especies herbáceas del centro de la Península Ibérica

    Directory of Open Access Journals (Sweden)

    Sánchez, Ana M.

    2001-12-01

    Full Text Available Although seed weight is a key factor in understanding the reproductive biology of plant species, its value is unknown for a large proportion of the herbaceous species in the Mediterranean basin. This paper presents data on seed weight, dimensions and volume for 1 18 herbaceous species in acidic Mediterranean scrub and grassland in the centre of the Iberian Peninsula. This information is used to design predictive models of seed weight using multiple regression models. taking into account the phylogenetic effect. Five groups of models were designed: one using Trifolium species. three. using the families represented by the largest number of species (Catyophyllaceae, Asteraceae and Poaceae; and finally a general model using one species from each of the families present in the sample. The models are rated according to the absorbed variante, their significance in relation to the previous in complexity and the effort required to obtain the data for each one. We also test the validity of seed dimension data taken from literature sources to predict seed weight. The 1-0 seed dimensions are excellent weight predictors in the case of Trifolium (Weight = - 24.55 + 0.10D1 + 3.38D2, r2 = 0.94 and Asteraceae (Weight = - 20.90 + 1.19D1 + 1.67D2, r2 = 0.91 and are quite satisfactory in the case of the general model (Weight = - 16.01 +0.56D1 + 1.6002, r2 = 0.69.El peso de las semillas es un carácter clave para entender la biología reproductiva de las especies vegetales, pero se desconoce su valor para gran parte de las especies herbáceas de la cuenca mediterránea. En este trabajo se exponen datos de peso, dimensiones y volumen de las semillas de 118 especies herbáceas características del matorral y pastizal acidófilos mediterráneos del centro de la Península Ibérica. Esta información es empleada para elaborar modelos predictivos del peso a partir de las dimensiones mediante el uso de modelos de regresión lineal múltiple, teniendo en cuenta el efecto

  4. Conservação de sementes de amendoim em câmara fria e seca Peanut seed preservation in cold and dry chamber

    Directory of Open Access Journals (Sweden)

    Angelo Savy Filho

    1986-01-01

    Full Text Available Sementes de amendoim (Arachis hypogaea L. do cultivar Tatu, produzidas no Centro Experimental de Campinas, no período "das águas" do ano agrícola 1970/1971, foram descascadas manual e mecanicamente, tratadas com fungicida e mantidas em câmara de armazenamento regulada a 15°C e 35% de umidade relativa por 36 meses. Sementes descascadas manualmente apresentaram, ao final desse período, germinação de 87%, e as descascadas mecanicamente, de 62%. Os resultados mostraram ser possível conservar sementes tratadas de amendoim, nas condições mencionadas, por até 36 meses para as descascadas manualmente, e por até 24-30 meses, para as descascadas mecanicamente.Peanut (Arachis hypogaea L. seeds of the cultivar Tatu, produced at the Centro Experimental de Campinas, in the 1970/1971 crop year, were manually and mechanically shelled, treated with fungicide, and kept in a store-room maintained at 15°C and 35% relative humidity for a period of 36 months. Manually shelled seeds presented, after 36 months of storage, the germination of 87%, while those mechanically shelled exhibited in the same period, the germination of 62%. Results showed that it is possible to preserve treated peanut seeds in the above mentioned conditions for at least 36 months when manually shelled, and for at least, 24-30 months when mechanically shelled.

  5. Alterações ultraestruturais em larvas de Aedes aegypti submetidas ao diterpeno labdano, isolado de Copaifera reticulata (Leguminosae, e à uma fração rica em taninos de Magonia pubescens (Sapindaceae

    Directory of Open Access Journals (Sweden)

    Cleyde Ferreira Barreto Valotto

    2011-04-01

    Full Text Available INTRODUÇÃO: Dengue é um importante problema de saúde pública, em vários países, e tem como principal vetor o Aedes aegypti, mosquito mais adaptado às áreas urbanizadas. Apresenta-se, pela primeira vez, as alterações ultraestruturais em larvas de 3º estádio, desse mosquito, causadas pelos larvicidas naturais, um diterpeno labdano, extraído de Copaifera reticulata, e uma fração rica em taninos catéquicos, extraída de Magonia pubescens, evidenciando o mecanismo de ação dessas substâncias. MÉTODOS: Os experimentos foram realizados com larvas de 3º estádio em solução de 0,9ppm, do diterpeno (3-β-acetoxylabdan-8(17-13-dien-15-óico e de 3,7ppm, da fração majoritária de tanino catéquico de massa molecular 864Da. Obtiveram-se as substâncias através de fracionamentos cromatográficos sucessivos, identificadas por ressonância magnética nuclear de hidrogênio e espectrometria de massas. As larvas que atingiram estado letárgico foram coletadas e dissecadas e seus tubos digestórios fixados, desidratados, emblocados e polimerizados. Cortes ultrafinos foram feitos e contrastados com acetato de uranila 3% e citrato de chumbo, posteriormente, levados ao microscópio eletrônico. RESULTADOS: As principais alterações ultraestruturais provocadas pelos diterpeno e tanino sobre larvas de Aedes aegypti foram vacuolização citoplasmática, desorganização e degeneração celular, mudança estrutural dos microvilos e deslocamento das células da lâmina basal. CONCLUSÕES: O diterpeno e a fração rica em taninos catéquicos provocaram a morte das larvas de Aedes aegypti através da destruição celular no intestino médio.

  6. Seed producer cooperatives in the Ethiopian seed sector and their role in seed supply improvement: A review

    NARCIS (Netherlands)

    Sisay, D.T.; Verhees, F.J.H.M.; Trijp, van J.C.M.

    2017-01-01

    The role of seed producer cooperatives (SPCs) in the Ethiopian seed sector and their contribution to seed supply improvement have received attention from researchers, policymakers, and development partners. However, limited work has been done in reviewing and documenting their involvement in the

  7. Forest Seed Collection, Processing,and Testing

    DEFF Research Database (Denmark)

    Schmidt, Lars Holger

    2016-01-01

    This chapter pertains to the techniques of capturing the best genetic quality seeds a seed source can produce at the optimal time of high physiological maturity and maintaining these qualities throughout the handling processes, all at a minimum cost. Different collection and processing techniques...... apply to different species, seed types, situations, and purposes. Yet the collection and processing toolbox contains a number of “standard” methods for most of these groups. Records and documentation help in evaluating “best practice” for future method improvement, and it helps in linking offspring...... to seed source. Conditions are set for short- and long-term seed storage by their inert storability physiology. The potential storage life of seed may for some robust “orthodox” species be several decades, while no available storage conditions can maintain viability for sensitive “recalcitrant” seed. Seed...

  8. Chemical Composition of Kapok (Ceibapentandra) Seed and ...

    African Journals Online (AJOL)

    -5 years. ... with a sharp steel knife from which healthy seeds were selected. ... Total carbohydrate was determined by difference. .... resistance to microbial attack of plant tissue (Taiz and. Zeiger, 1991 ... Maintenance of soybean seed quality in ...

  9. Inheritance of egusi seed type in watermelon.

    Science.gov (United States)

    Gusmini, G; Wehner, T C; Jarret, R L

    2004-01-01

    An unusual seed mutant in watermelon (Citrullus lanatus var. lanatus) has seeds with a fleshy pericarp, commonly called egusi seeds. The origin of the phenotype is unknown, but it is widely cultivated in Nigeria for the high protein and carbohydrate content of the edible seeds. Egusi seeds have a thick, fleshy pericarp that appears during the second to third week of fruit development. We studied the inheritance of this phenotype in crosses of normal seeded Charleston Gray and Calhoun Gray with two plant introduction accessions, PI 490383w and PI 560006, having the egusi seed type. We found that the egusi seed type is controlled by a single recessive gene, and the symbol eg was assigned. Copyright 2004 The American Genetic Association

  10. Seed technology training in the year 2000

    Directory of Open Access Journals (Sweden)

    McDonald M.B.

    1998-01-01

    Full Text Available Seed quality will remain the centerpiece of successful agricultural programs in the year 2000. As new changes occur in agriculture driven by advancements in biotechnology, seed enhancement technologies, a more diverse seed user clientele, and communication technologies, successful seed companies will require a knowledgeable and informed workforce to assure high seed quality. A new approach to seed technology training is professed that relies on the establishment of a three-institution consortium to achieve this objective. Advantages of the consortium are identified that emphasize the unique strengths of each institution, their geographic advantages representing major climactic/agricultural zones in the world, and differing approaches to seed technology training that are facilitated by increasing ease of global communication. This may be a better way to conduct seed technology training in the year 2000.

  11. Analysis of Seed Potato Systems in Ethiopia

    NARCIS (Netherlands)

    Hirpa, A.; Meuwissen, M.P.M.; Tesfaye, A.; Lommen, W.J.M.; Oude Lansink, A.G.J.M.; Tsegaye, A.; Struik, P.C.

    2010-01-01

    This study aimed to analyze the seed potato systems in Ethiopia, identify constraints and prioritize improvement options, combining desk research, rapid appraisal and formal surveys, expert elicitation, field observations and local knowledge. In Ethiopia, informal, alternative and formal seed

  12. Updated Methods for Seed Shape Analysis

    Directory of Open Access Journals (Sweden)

    Emilio Cervantes

    2016-01-01

    Full Text Available Morphological variation in seed characters includes differences in seed size and shape. Seed shape is an important trait in plant identification and classification. In addition it has agronomic importance because it reflects genetic, physiological, and ecological components and affects yield, quality, and market price. The use of digital technologies, together with development of quantification and modeling methods, allows a better description of seed shape. Image processing systems are used in the automatic determination of seed size and shape, becoming a basic tool in the study of diversity. Seed shape is determined by a variety of indexes (circularity, roundness, and J index. The comparison of the seed images to a geometrical figure (circle, cardioid, ellipse, ellipsoid, etc. provides a precise quantification of shape. The methods of shape quantification based on these models are useful for an accurate description allowing to compare between genotypes or along developmental phases as well as to establish the level of variation in different sets of seeds.

  13. Effects of seed and seedling predation by small mammals on ...

    African Journals Online (AJOL)

    Seed predation reduced seedling recruitment from seeds planted in March 1986 in mature fynbos, but ... Seed predation did not significantly reduce seedling recruitment from seed planted in July, August and ... AJOL African Journals Online.

  14. Use of linear discriminant function analysis in seed morphotype ...

    African Journals Online (AJOL)

    Use of linear discriminant function analysis in seed morphotype relationship study in 31 ... Data were collected on 100-seed weight, seed length and seed width. ... to the Mesoamerican gene pool, comprising the cultigroups Sieva-Big Lima, ...

  15. Challenges and opportunities for quality seed potato availability and ...

    African Journals Online (AJOL)

    ACSS

    Key words: Quality seed potato, seed system and challenges ... systems, inadequate seed production and ... informal sources of seed potato, despite ..... Directorate General for International. Co-operation (DGIC), Brussels,. Belgium. 1540pp.

  16. Efficient chaining of seeds in ordered trees

    OpenAIRE

    Allali, Julien; Chauve, Cédric; Ferraro, Pascal; Gaillard, Anne-Laure

    2010-01-01

    International audience; We consider here the problem of chaining seeds in ordered trees. Seeds are mappings between two trees Q and T and a chain is a subset of non overlapping seeds that is consistent with respect to postfix order and ancestrality. This problem is a natural extension of a similar problem for sequences, and has applications in computational biology, such as mining a database of RNA secondary structures. For the chaining problem with a set of m constant size seeds, we describe...

  17. Composition of jojoba seeds and foliage

    Energy Technology Data Exchange (ETDEWEB)

    Verbiscar, A.J.; Banigan, T.F.

    1978-01-01

    The desert shrub jojoba (Simmondsia chinensis) may be browsed by cattle. The seeds have about 50% oil but the extracted meal is at present unsuitable for feeding. Simmondsin, the most prevalent toxin, is present in seed, 2.3%, and in husks, leaves and twigs. Seeds contained another toxin, Simmondsin 2'-ferulate. The contents of oil, protein, carbohydrate and amino acids in seed are tabulated. 13 references.

  18. Drug Plant Seed Viability Preservation by Cryoconservation

    Directory of Open Access Journals (Sweden)

    Alexandra Sh. Dodonova

    2013-01-01

    Full Text Available The article considers the possibility of cryopreservation of seeds of several species of drug plants in Central Kazakhstan – Tanacetum ulutavicum, Niedzwedzkia semiretschenskia, Rhaponticum carthamoides. To increase the amount of viable seeds after liquid nitrogen freezing, we used different defrosting temperatures, deposited seeds with different moisture contents and used different containers for cryopreservation. Recommendations, concerning conditions of cryopreservation of seeds of these drug plant species were developed, basing on the obtained results.

  19. Training and research in seed technology. No quality seeds without skilled staff

    NARCIS (Netherlands)

    Groot, S.P.C.; Hilhorst, H.W.M.

    2016-01-01

    The seed industry in the Netherlands is the largest exporter of horticultural seeds, reaching farmers in every country of the world. High seed quality is one of the key factors of this success. Maintaining and increasing the level of seed qualtiy requires skilled staff, innovation and collaboration

  20. How seed orchard culture affects seed quality: experience with the southern pines

    Science.gov (United States)

    James P. Barnett

    1996-01-01

    Tree improvement programs have influenced significantly the quality of southern pine seeds produced when compared to collections from native stands. Seed orchard management practices such as fertilization can increase seed size and reduce seed dormancy. These result in the need for less complex pregermination treatments. Repeated cone collections from the same clones...

  1. Consistent individual differences in seed disperser quality in a seed-eating fish

    NARCIS (Netherlands)

    Pollux, Bart J.A.

    2017-01-01

    Animal-mediated seed dispersal (zoochory) is considered to be an important mechanism regulating biological processes at larger spatial scales. To date, intra-specific variation in seed disperser quality within seed-dispersing animals has not been studied. Here, I employed seed feeding trials to

  2. Securing Access to Seed: Social Relations and Sorghum Seed Exchange in Eastern Ethiopia

    NARCIS (Netherlands)

    McGuire, S.

    2008-01-01

    Access to seed is crucial for farming, though few studies investigate household-level access in the informal `farmer seed systems¿ which still supply most seed in poor countries. This paper uses empirical data of seed exchange practices for sorghum in eastern Ethiopia to analyze how social

  3. seed germination and seedlings growth

    African Journals Online (AJOL)

    STORAGESEVER

    2007-12-17

    Dec 17, 2007 ... however, abscisic acid (ABA) can counter this effect by keeping seeds ... Tris-HCl buffer at pH 8.8, with constant current set at 20 mA/gel. The gels were ..... on plants is rarely studied and the importance of 20E in the life cycle ...

  4. The Seed Is the Law

    Science.gov (United States)

    Antone, Eileen M.

    2005-01-01

    Since humanities arise from a specific place and from the people of that place, this article will focus on Peacemaker's revolutionary teachings about the seed of law. Long before the people from across the ocean arrived here on Turtle Island (North America) there was much warfare happening. According to John Mohawk (2001, para. 1), an Iroquoian…

  5. Seed production for fuel oils

    International Nuclear Information System (INIS)

    Mosca, G.

    1992-01-01

    With the aim of assessing commercialization prospects for vegetable oils to be used as diesel fuel alternatives, this paper provides maps indicating regional production quantities for soybean, rape and sunflower seeds in Italy. It then tables and discusses the results of energy input-output analyses carried out for rape and soybean oil production

  6. Hormones and tomato seed germination

    NARCIS (Netherlands)

    Liu, Y.

    1996-01-01

    Using GA- and ABA-deficient mutants, exogenous gibberellins (GAs), abscisic acid (ABA) and osmoticum, we studied the roles of GAs and ABA in the induction of cell cycle activities, internal free space formation and changes in water relations during seed development and imbibition in tomato. First of

  7. Spiny hopsage fruit and seed morphology

    Science.gov (United States)

    Nancy L. Shaw; Emerenciana G. Hurd; Marshall R. Haferkamp

    1996-01-01

    Rangeland seedings of spiny hopsage (Gruyia spinosa [Hook.] Moq.) may be made with either bracted utricles or seeds. Problems have resulted from inconsistent use of terminology describing these 2 structures and the fact their germination and seedling emergence is not the same with similar environmental conditions and seeding techniques. We examined...

  8. Galactinol as marker for seed longevity

    NARCIS (Netherlands)

    Souza Vidigal, De D.; Willems, L.A.J.; Arkel, van J.; Dekkers, S.J.W.; Hilhorst, H.W.M.; Bentsink, L.

    2016-01-01

    Reduced seed longevity or storability is a major problem in seed storage and contributes to increasedcosts in crop production. Here we investigated whether seed galactinol contents could be predictive forseed storability behavior in Arabidopsis, cabbage and tomato. The analyses revealed a positive

  9. Seed dormancy and germination : light and nitrate

    NARCIS (Netherlands)

    Hilhorst, H.W.M.

    1990-01-01

    One of the most important aspects of the life cycle of seed plants is the formation and development of seeds on the motherplant and the subsequent dispersal. An equally important element of the survival strategy is the ability of seeds to prevent germination in unfavorable

  10. Dormancy cycling in seeds: mechanisms and regulation

    NARCIS (Netherlands)

    Claessens, S.M.C.

    2012-01-01

    The life cycle of most plants starts, and ends, at the seed stage. In most species mature seeds are shed and dispersed on the ground. At this stage of its life cycle the seed may be dormant and will, by definition, not germinate under favourable conditions (Bewley, 1997).

    Seasonal

  11. Seed coat darkening in Cowpea bean

    Science.gov (United States)

    Seed coat of cowpea bean (Vigna unguiculata L. Walp) slowly browns to a darker color during storage. High temperature and humidity during storage might contribute to this color change. Variation in browning rate among seeds in a lot leads to a mixture of seed colors creating an unacceptable product...

  12. 7 CFR 947.12 - Seed potatoes.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Seed potatoes. 947.12 Section 947.12 Agriculture... and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE IRISH POTATOES GROWN IN MODOC AND... Definitions § 947.12 Seed potatoes. Seed potatoes means and includes all potatoes officially certified and...

  13. 7 CFR 946.12 - Seed potatoes.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Seed potatoes. 946.12 Section 946.12 Agriculture... and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE IRISH POTATOES GROWN IN WASHINGTON Order Regulating Handling Definitions § 946.12 Seed potatoes. Seed potatoes means and includes all...

  14. Running title: Water distribution in chickpea seeds

    African Journals Online (AJOL)

    agriphy20

    2012-07-24

    Jul 24, 2012 ... molecular mobility of cellular water in magnetically exposed seeds as compared to unexposed seeds. Analysis of ... protrusion takes place through the seed coat and absorption .... directly related to water activity (aw) of the cell water. (Gambhir ..... plants, including photosynthesis, respiration and enzymatic ...

  15. Strategies for Seed Propagation of Native Forbs

    Science.gov (United States)

    Susan E. Meyer

    2006-01-01

    Native forbs are an increasingly important component of container production for many public and private nurseries. Propagators are often called upon to grow species with unknown requirements. A systematic approach is required to obtain plants from seeds of these species, beginning with determining what is a propagule and evaluating seed quality. Next, seed dormancy...

  16. Inheritance of fresh seed dormancy in groundnut

    African Journals Online (AJOL)

    SERVER

    2008-02-19

    Feb 19, 2008 ... Seed dormancy has been defined as the failure of an intact, viable seed to ... expected ratio of 3 dormant : 1 non-dormant seeds in F2 generations of crosses of ICGV 87378 and ICGV ... ICGV 87378 x ICGV 86158. 163. 0. 163.

  17. Spinach seed quality - potential for combining seed size grading and chlorophyll flourescence sorting

    DEFF Research Database (Denmark)

    Deleuran, Lise Christina; Olesen, Merete Halkjær; Boelt, Birte

    2013-01-01

    might therefore improve the establishment of spinach for producers. Spinach seeds were harvested at five different times (H1, H2, H3, H4 and H5) starting 3 weeks before estimated optimum harvest time. The harvested seeds were sorted according to chlorophyll fluorescence (CF) and seed size. Two harvest.......5–3.25 mm size seeds had germinated on day 3 than both their larger and smaller counterparts at the later time of harvest (H4). Seeds with a diameter below 2.5 mm displayed the lowest MGT. Commercially, the use of chlorophyll fluorescence (CF)-sorted seeds, in combination with seed size sorting, may provide...

  18. [Effects of illumination and seed-soaking reagent on seed germination of Solanum nigrum].

    Science.gov (United States)

    Yang, Chuan-Jie; Wei, Shu-He; Zhou, Qi-Xing; Hu, Ya-Hu; Niu, Rong-Cheng

    2009-05-01

    To explore a rapid seed germination method for hyperaccumulator Solanum nigrum, a germination experiment with different illumination and seed-soaking treatments was conducted in constant temperature box and greenhouse, with filter as burgeon base. Under illumination, the germination rate was about 5 times high of that without illumination (P seed germination of S. nigrum. All test seed-soaking reagents could significantly improve the germination rate of S. nigrum (P seeds treated with H2O2 had the shortest germination time. The germination rate of seeds soaked but without cleaning was 2-3 times as high as that of seeds soaked and cleaned with water.

  19. The biomechanics of seed germination.

    Science.gov (United States)

    Steinbrecher, Tina; Leubner-Metzger, Gerhard

    2017-02-01

    From a biomechanical perspective, the completion of seed (and fruit) germination depends on the balance of two opposing forces: the growth potential of the embryonic axis (radicle-hypocotyl growth zone) and the restraint of the seed-covering layers (endosperm, testa, and pericarp). The diverse seed tissues are composite materials which differ in their dynamic properties based on their distinct cell wall composition and water uptake capacities. The biomechanics of embryo cell growth during seed germination depend on irreversible cell wall loosening followed by water uptake due to the decreasing turgor, and this leads to embryo elongation and eventually radicle emergence. Endosperm weakening as a prerequisite for radicle emergence is a widespread phenomenon among angiosperms. Research into the biochemistry and biomechanics of endosperm weakening has demonstrated that the reduction in puncture force of a seed's micropylar endosperm is environmentally and hormonally regulated and involves tissue-specific expression of cell wall remodelling proteins such as expansins, diverse hydrolases, and the production of directly acting apoplastic reactive oxygen. The endosperm-weakening biomechanics and its underlying cell wall biochemistry differ between the micropylar (ME) and chalazal (CE) endosperm domains. In the ME, they involve cell wall loosening, cell separation, and programmed cell death to provide decreased and localized ME tissue resistance, autolysis, and finally the formation of an ME hole required for radicle emergence. Future work will further unravel the molecular mechanisms, environmental regulation, and evolution of the diverse biomechanical cell wall changes underpinning the control of germination by endosperm weakening. © The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com.

  20. Adaptation and Genotype x Environment Interaction of Flaxseed (Linum usitatissimum L. Genotypes in South Central Chile Adaptación e Interacción Genotipo x Ambiente en Lino (Linum usitatissimum L. en la Zona Centro Sur de Chile

    Directory of Open Access Journals (Sweden)

    Marisol Berti

    2010-09-01

    Full Text Available Flaxseed (Linum usitatissimum L. is imported into Chile mostly for bread making and feed. Identification of genotypes best adapted for seed production in South Central Chile would facilitate producer’s decision. The objective of this study was to determine the adaptation and genotype x environment interaction of 16 flaxseed genotypes (including 10 from North American and six from Argentine sources grown at 11 environments (defined as location-year in Chile from 2003 to 2007. Genotype seed yield was above 5700 kg ha-1 for some environments indicating a high yield potential. According to the AMMI (Additive Main Effects and Multiplicative Interaction and SREG (Sites regression models the 11 environments were classified into four groups by the AMMI and three groups by the SREG models. Genotypes were classified into five groups by the SREG model with four of the groups as single genotypes. Overall mean seed yield was similar for all genotypes; however the genotype Nekoma was the most stable and higher yielding genotype across environments. The environment with the highest yield potential was Chillán 2003-2004, but this location had low yield stability across years. The environments with greatest seed yield potential, Chillán 2003-2004 and Los Ángeles 2004-2005, had irrigation during flowering and seed filling. Seed oil content fluctuated between 420 and 530 g kg-1. The climatic differences among environments did not influence oil composition as expected from previous research. Flaxseed appears adapted to South Central Chile with differences observed among genotypes for biomass and seed yield, harvest index, test weight, oil content, and composition.La semilla de lino (Linum usitatissimum L. se importa a Chile principalmente para panaderías y alimento animal. La identificación de genotipos altamente productivos en la zona Centro Sur de Chile facilitaría la decisión de los productores. El objetivo de este estudio fue determinar la adaptaci

  1. Improving seed potato quality in Ethiopia: a value chain perspective

    NARCIS (Netherlands)

    Hirpa, A.; Gielen-Meuwissen, M.P.M.; Lommen, W.J.M.; Oude Lansink, A.G.J.M.; Tsegaye, A.; Struik, Paul

    2016-01-01

    In Ethiopia, use of low-quality seed potatoes by the majority of potato growers is
    associated with underdevelopment of the seed potato value chains. Three seed potato systems are present in Ethiopia: the informal seed system, the alternative seed system and the formal seed system. This chapter

  2. Evaluation of seed production of scots pine ( Pinus sylvestris L ...

    African Journals Online (AJOL)

    This research was carried out to investigate seed production in a 13 years-old scots pine (Pinus sylvestris L.) clonal seed orchard, including 30 clones. Eight of cone and seed traits as number of fertile and infertile scales, cone volume, cone number, filled and empty seed number, seed efficiency and 1000 seed weight were ...

  3. Turismo y desarrollo sostenible: el caso del centro histórico de la Habana - Cuba

    Directory of Open Access Journals (Sweden)

    Eduardo Salinas Chávez

    2005-01-01

    Full Text Available La adaptación a los nuevos tiempos ha hecho necesario una ampliación de la visión sobre los Centros Históricos a nivel mundial, entendiéndose estos no sólo en su valor histórico, cultural y social sino también en su dimensión económica, ya que se trata de lograr un desarrollo integral autofinanciado que haga recuperable y productiva la inversión de restauración y conservación de los mismos. Históricamente La Habana Vieja se caracterizó por disponer de una importante red hotelera que junto a restaurantes, bares, cafeterías, comercios y otros servicios se distinguían en el ámbito internacional. El sector terciario constituye, por tanto, una de las fuentes principales para la diversificación de la base económica del Centro Histórico de La Habana tradicionalmente vinculado al carácter del mismo a través de su tipología y funciones. En esta investigación se abordan de forma holística las relaciones que se establecen entre los cambios generados por el sector turístico en su dimensión económica y la repercusión espacial que implican dichos cambios para el Centro Histórico de La Habana, para lo cual se han aplicado diversos indicadores como el Índice de Centralidad Turística (Biagini, 1986 y la Tasa de Frecuentación Turística (Defert,1967 y se trabaja en la determinación de la Capacidad de Acogida Turística de las diferentes zonas del mismo

  4. Resiliencia en trabajadores y en residentes de un centro de personas mayores institucionalizadas

    Directory of Open Access Journals (Sweden)

    Inmaculada Méndez

    2015-04-01

    Full Text Available La resiliencia supone un constructo dinámico y multidimensional que alude a la capacidad que tienen las personas para afrontar o recuperarse con éxito de las situaciones adversas. El objetivo del presente estudio ha sido analizar la capacidad de resiliencia en trabajadores y en residentes de un centro de personas mayores institucionalizadas en función de las características sociodemográficas (sexo, edad y estado civil tras la situación adversa por el terremoto ocurrido el Lorca en mayo del 2011. Se ha administrado un cuestionario sociodemográfico desarrollado ad hoc junto a la adaptación de la Escala de Resiliencia de Connor-Davidson (CD-RISC en los sujetos del estudio. Los participantes fueron 20 trabajadores y 34 personas mayores de un centro de personas mayores institucionalizadas de la Región de Murcia (Lorca. La edad media de las personas mayores institucionalizadas fue de 81 años con una desviación típica de 7.68 y la edad media de los cuidadores profesionales fue de 37.85 años y la desviación típica de 9.60. El estudio permite determinar la capacidad de resiliencia atendiendo a características sociodemográficas así como la existencia de diferencias de medias significativas entre la capacidad de tenacidad autoeficacia entre los trabajadores y los residentes del centro de personas mayores lo que permitirá establecer actividades de prevención y/o de intervención.

  5. Desplazamiento activo de los adolescentes al centro de estudios y funcionamiento familiar

    Directory of Open Access Journals (Sweden)

    Eva Sanz Arazuri

    2017-06-01

    Full Text Available El presente estudio analiza el desplazamiento activo al centro de estudios del alumnado de secundaria postobligatoria y su posible relación con el funcionamiento interno familiar atendiendo de forma conjunta a dos constructos fundamentales: la cohesión y la flexibilidad entre padres e hijos. 1764 jóvenes (15 a 18 años, cumplimentan un cuestionario ad hoc y el FACES IV. Se detectan diferencias significativas a través del coeficiente V de Cramer y se efectúan Anova de un factor y análisis de contrastes, para una p < 0.05. Menos de la mitad de los adolescentes españoles (el 45.7% se desplazan activamente a su centro de estudios, siendo significativamente y ligeramente superior el porcentaje de hombres frente al de mujeres. El 91.2% de los estudiantes de secundaria posobligatoria en España perciben que el funcionamiento interno de su familia es sano. El 89.6% indican una buena cohesión entre los miembros de su familia y un 88.3% señalan que gozan de una flexibilidad familiar saludable. Los estudiantes que acuden al centro de estudios andando perciben un funcionamiento familiar menos sano que quienes se desplazan en cualquier medio de transporte motorizado. Se refuerza la necesidad de promocionar el transporte activo entre los escolares en general, y en estas edades en especial, a través de programas de intervención dirigidos a estudiantes y sus familiares, concienciando sobre los beneficios saludables del desplazamiento activo, tanto en su dimensión física como en la psicológica y social.

  6. Multivariate NIR studies of seed-water interaction in Scots Pine Seeds (Pinus sylvestris L.)

    OpenAIRE

    Lestander, Torbjörn

    2003-01-01

    This thesis describes seed-water interaction using near infrared (NIR) spectroscopy, multivariate regression models and Scots pine seeds. The presented research covers classification of seed viability, prediction of seed moisture content, selection of NIR wavelengths and interpretation of seed-water interaction modelled and analysed by principal component analysis, ordinary least squares (OLS), partial least squares (PLS), bi-orthogonal least squares (BPLS) and genetic algorithms. The potenti...

  7. Influence the Rubber Seed Type and Altitude on Characteristic of Seed, Oil and Biodiesel

    OpenAIRE

    Salni Salni; Poedji Loekitowati Hariani; Hanifa Marisa Hanifa

    2017-01-01

    This research studies the influence of the type of rubber seed that is superior and local, altitude plant in South Sumatra province to the characteristic of seed, oil and biodiesel (methyl ester). Rubber plants planted from local rubber seed by seeds seedlings and superior rubber seed by selected clones. In the study, rubber plants planted at a different altitude, namely in Banyuasin district (18 m above sea level), Prabumulih District (176 m above sea level) and Lahat District (627 m above s...

  8. Influence of the Rubber Seed Type and Altitude on Characteristic of Seed, Oil and Biodiesel

    OpenAIRE

    Salni, Salni; Hariani, Poedji Loekitowati; Hanifa, Hanifa Marisa

    2017-01-01

    This research studies the influence of the type of rubber seed that is superior and local, altitude plant in South Sumatra province to the characteristic of seed, oil and biodiesel (methyl ester). Rubber plants planted from local rubber seed by seeds seedlings and superior rubber seed by selected clones. In the study, rubber plants planted at a different altitude, namely in Banyuasin district (18 m above sea level), Prabumulih District (176 m above sea level) and Lahat District (627 m above s...

  9. High rates of gene flow by pollen and seed in oak populations across Europe

    NARCIS (Netherlands)

    Gerber, S.; Chadoeuf, J.; Gugerli, F.; Lascoux, M.; Buiteveld, J.; Cottrell, J.; Dounavi, A.; Fineschi, S.; Forrest, L.; Fogelqvist, J.; Goicoechea, P.G.; Jensen, J.S.; Salvini, D.; Vendramin, G.G.; Kremer, A.

    2014-01-01

    Gene flow is a key factor in the evolution of species, influencing effective population size, hybridisation and local adaptation. We analysed local gene flow in eight stands of white oak (mostly Quercus petraea and Q. robur, but also Q. pubescens and Q. faginea) distributed across Europe. Adult

  10. Estilos de autocuidado de la enfermera de centro quirúrgico de un hospital de Lambayeque

    OpenAIRE

    Rodríguez Arteaga, Cynthya Vanessa

    2013-01-01

    La enfermería es una de las profesiones que está expuesta a una serie de riesgos, especialmente la que labora en Centro Quirúrgico por el tipo de trabajo, funciones y responsabilidades que realiza, por lo que es necesario la adopción de un estilo de autocuidado considerado como un conjunto de aptitudes, preferencias, tendencias y actitudes de cuidados que se proporciona la persona para tener una mejor calidad de vida. El objetivo fue caracterizar y comprender los estilos de autocuidado de la ...

  11. Planificación y diseño del centro comercial inteligente Monay Shopping

    OpenAIRE

    Buele Villa, Luis Enrique

    2009-01-01

    El proyecto descrito a continuación trata del diseño integro automatizado, de las instalaciones tanto eléctricas, de telecomunicaciones y circuito cerrado de televisión, del centro comercial MONAY SHOPPING, para ello se desarrollaran tres redes independientes que son: Red de energía eléctrica. Red de voz y datos mediante su cableado estructurado. Red de circuito cerrado de televisión para seguridad. La automatización consiste básicamente en totalizar unidades de control y regulación independi...

  12. Plan de marketing de un centro de psicología integral

    OpenAIRE

    Celis Gutiérrez, Carmen de

    2016-01-01

    RESUMEN: A través del Trabajo de Fin de Grado se a realizar un Plan de Marketing adaptado un centro de psicología integral. Este Plan de Marketing comenzará con un análisis exhaustivo del marketing estratégico donde se utilizarán conceptos como misión, visión y valores corporativos para posteriormente definir la estrategia empresarial que delimitará el campo de trabajo. Se realizará un análisis externo del entorno e interno de la empresa para que con toda la información obtenida se real...

  13. Inteligencia emocional en estudiantes de la Universidad Nacional del Centro del Perú, 2013

    OpenAIRE

    Cesar Reyes Lujan; Iris Carrasco Díaz

    2014-01-01

    Objetivos: Determinar los niveles de inteligencia emocional predominantes en los estudiantes de la Facultad de Enfermería de la Universidad Nacional del Centro del Perú en el año 2013. Método: Se empleó el método descriptivo prospectivo. Se evaluaron un total de 195 estudiantes de 16 a 30 años de edad en toda la facultad. Para la recolección de datos, se aplicó el inventario Emocional de BarOn y el inventario de coeficiente emocional (ICE) que permitió conocer su inteligencia emocional. Resul...

  14. Centro de tecnificación deportiva para remo y piragüismo

    OpenAIRE

    Vázquez Pérez, Rubén Martín

    2010-01-01

    La elección como Tesis de Disertación de Maestrado el presente “TRABAJO DE PROYECTO”, no fue fácil, pero una vez finalizado el proceso de investigación y el estudio exhaustivo de la zona de ubicación, éste fue fluyendo de manera natural, sobre una base conceptual sólida y consistente. Desde su inicio se ha pretendido ir más allá que una edificación que mejore y complemente las ya existentes, para convertirse en icono y configurarse como un autentico centro dinamizador de los...

  15. El sustento ambiental de la actividad turística de los centros del litoral

    OpenAIRE

    Ferraro, Rosana; Echechuri, Héctor

    1999-01-01

    La base económico-productiva de los centros urbanos del litoral marítimo bonaerense es la actividad turística, en su modalidad de sol y playa. La base de sustentación de dicha actividad socioeconómica es la presencia de un sistema natural de gran riqueza paisajística. El presente trabajo identifica unidades homogéneas de paisaje, basadas en la selección de tres indicadores claves del mismo, la geomorfología, la vegetación y el uso del suelo para posteriormente ponderar dichas unidades en su c...

  16. Desarrollo del curriculo de los centros educativos: analisis de los elementos orientadores e instrumentales

    Directory of Open Access Journals (Sweden)

    Carmen Díaz Bazo

    1992-06-01

    Full Text Available El trabajo de investigación "Desarrollo del Currículo de los Centros Educativos: Análisis de los Elementos Orientadores e Instrumentales" surgió como una preocupación del Proyecto Educación y Cultura de Paz por conocer la realidad educativa de Lima Metropolitana y contribuir a mejorar la calidad de la educación.La realidad de crisis y violencia que hoy vivimos plantea algunas interrogantes sobre cómo la educación y, especialmente el currículo, está respondiendo con nuevas alternativas a esta situación.

  17. Gestión de proyecto participativo de centro comunitario intercultural

    OpenAIRE

    Doble Vía

    2012-01-01

    La iniciativa, dirigida por la Arq. Karina Cortina, surge como una continuidad del Proyecto “Barrio Intercultural – Lote 27”, en las tierras restituidas en la región de San Martín de los Andes. En esta etapa, el proyecto se centra en la construcción compartida del Centro Comunitario Intercultural, que se construirá con tecnologías apropiadas y sustentables para dicha región. (Párrafo extraído del texto a modo de resumen) Facultad de Arquitectura y Urbanismo

  18. Organização da demanda de um Centro de Especialidades Odontológicas

    Directory of Open Access Journals (Sweden)

    Nemre Adas Saliba

    Full Text Available INTRODUÇÃO: A Atenção Secundária em saúde bucal no Brasil ainda é um assunto pouco pesquisado. OBJETIVO: Analisar a resolubilidade dos serviços odontológicos do Sistema Único de Saúde, com base na referência para a atenção secundária e a contrarreferência à atenção primária. METODOLOGIA: Trata-se de um estudo descritivo, quantitativo, que utilizou dados secundários coletados dos prontuários dos pacientes atendidos no Centro de Especialidades Odontológicas de um município do Estado de São Paulo. RESULTADO: Do total de 1030 prontuários analisados, verificaram-se 1236 procedimentos referenciados para atenção especializada. Destes, 86,4% deram entrada na Unidade Básica de Saúde por livre demanda e 50,4% (n=623, para especialidade de Endodontia. Houve evasão de 2,2% (n=28 já na primeira consulta especializada. Nos pacientes que deram início ao tratamento especializado, foram realizados 1.208 procedimentos no Centro de Especialidades Odontológicas, tendo sido 62,6% (n=757 concluídos e contrarreferenciados para a Atenção Primária, que finalizou 61,1% (n=463 dos procedimentos. Para a conclusão do tratamento, considerando o tempo no Centro de Especialidades Odontológicas e na Atenção Básica, houve variação de acordo com a especialidade: Periodontia, 62 dias (dp= ±68, e Endodontia, 71 dias (dp= ±51,8, sendo necessárias três consultas em média, independentemente da especialidade. CONCLUSÃO: O Centro de Especialidades Odontológicas referencia, contrarreferencia e atende à maioria da demanda, independentemente da especialidade. Porém, ainda há muita evasão durante o tratamento odontológico, servindo de alerta para os gestores desenvolverem métodos de controle dos pacientes atendidos, com vistas à diminuição de gastos e ao aumento da resolutividade dos serviços, com a conclusão dos tratamentos iniciados.

  19. Desenvolvimento territorial : estudo de caso no Centro Sul Vale do Salgado

    OpenAIRE

    Arruda, Chrístian Dárlio Brito

    2014-01-01

    O objetivo deste trabalho foi analisar a política de territorialização do Centro Sul Vale do Salgado no Estado do Ceará, sob a ótica das dimensões do ecodesenvolvimento segundo Sachs (2002), considerando o Plano Territorial de Desenvolvimento Rural Sustentável (PTDRS). As dimensões do ecodesenvolvimento são social; econômica; ecológica; espacial; e cultural. Neste território foi constituído o Colegiado Territorial composto por 142 entidades, sendo, 94 integrantes da sociedade c...

  20. [Procedure of seed quality testing and seed grading standard of Prunus humilis].

    Science.gov (United States)

    Wen, Hao; Ren, Guang-Xi; Gao, Ya; Luo, Jun; Liu, Chun-Sheng; Li, Wei-Dong

    2014-11-01

    So far there exists no corresponding quality test procedures and grading standards for the seed of Prunus humilis, which is one of the important source of base of semen pruni. Therefor we set up test procedures that are adapt to characteristics of the P. humilis seed through the study of the test of sampling, seed purity, thousand-grain weight, seed moisture, seed viability and germination percentage. 50 cases of seed specimens of P. humilis tested. The related data were analyzed by cluster analysis. Through this research, the seed quality test procedure was developed, and the seed quality grading standard was formulated. The seed quality of each grade should meet the following requirements: for first grade seeds, germination percentage ≥ 68%, thousand-grain weight 383 g, purity ≥ 93%, seed moisture ≤ 5%; for second grade seeds, germination percentage ≥ 26%, thousand-grain weight ≥ 266 g, purity ≥ 73%, seed moisture ≤9%; for third grade seeds, germination percentage ≥ 10%, purity ≥ 50%, thousand-grain weight ≥ 08 g, seed moisture ≤ 13%.

  1. Myrmecochory and short-term seed fate in Rhamnus alaternus: Ant species and seed characteristics

    Science.gov (United States)

    Bas, J. M.; Oliveras, J.; Gómez, C.

    2009-05-01

    Benefits conferred on plants in ant-mediated seed dispersal mutualisms (myrmecochory) depend on the fate of transported seeds. We studied the effects of elaiosome presence, seed size and seed treatment (with and without passage through a bird's digestive tract) on short-term seed fate in Rhamnus alaternus. In our study, we define short-term seed, or initial, seed fate, as the location where ants release the seeds after ant contact with it. The elaiosomes had the most influence on short-term fate, i.e. whether or not seeds were transported to the nest. The workers usually transported big seeds more often than small ones, but small ants did not transport large seeds. Effect of seed size on transport depended on the ant species and on the treatment of the seed (manual extraction simulating a direct fall from the parent plant vs. bird deposition corresponding to preliminary primary dispersal). Probability of removal of elaiosome-bearing seeds to the nest by Aphaenogaster senilis increased with increasing seed weight.

  2. Trade and Transfer of Tree Seed

    DEFF Research Database (Denmark)

    Schmidt, Lars Holger

    2016-01-01

    testing records. Genetic quality is documented as documents on origin or seed source. New types of tree planting by smallholders imply special problems in distribution and supply systems since production systems for tree seeds have large areas while many consumers have small space for planting....... A centralized forest seed supply contains large central units with good facilities for production and procurement but is far from seed users. Alternative decentralized systems with many small producers may have problems meeting high standards of seed quality and dealing with central regulations....

  3. Stimulation of lettuce seed germination by ethylene.

    Science.gov (United States)

    Abeles, F B; Lonski, J

    1969-02-01

    Ethylene increased the germination of freshly imbibed lettuce (Lactuca sativa L. var. Grand Rapids) seeds. Seeds receiving either red or far-red light or darkness all showed a positive response to the gas. However, ethylene was apparently without effect on dormant seeds, those which failed to germinate after an initial red or far-red treatment. Carbon dioxide, which often acts as a competitive inhibitor of ethylene, failed to clearly reverse ethylene-enhanced seed germination. While light doubled ethylene production from the lettuce seeds, its effect was not mediated by the phytochrome system since both red and far-red light had a similar effect.

  4. GERMINATION STUDIES ON Tabebuia impetiginosa Mart. SEEDS

    Directory of Open Access Journals (Sweden)

    Edvaldo Aparecido Amaral da Silva

    2004-06-01

    Full Text Available Seed germination and seedling production of native forest tree species are an important step in ex situ conservation programs and in the reforestation with ecological purposes. Therefore, understanding seed germination and its regulation is mandatory for the complete success of the conservation programs and revegetation techniques. Thus, morphological studies, temperature requirements for seed germination and its control by gibberellins (GAs were studied in Tabebuia impetiginosa (“ipê-roxo” seeds. The best temperature for germination under constant light was 30oC. The imbibition of T. impetiginosa seeds followed the common triphasic pattern, with most of the seeds attaining phase II at 24 hours and phase III at 72 hours of imbibition. Visible germination, as radicle elongation, started at 30 hours in water-imbibed seeds and at 24 hours in GA-imbibed seeds. Seeds imbibed in Paclobutrazol, an inhibitor of GA biosynthesis, failed to germinate. However, application of exogenous gibberellins overcame inhibition and allowed germination, suggesting that GAs are regulators of Tabebuia impetiginosa seed germination. The results suggested that germination in Tabebuia impetiginosa seeds is controlled by elongation of the radicle and gibberellins may play an important role in regulating it. The possible role of gibberellins is discussed.

  5. [Seed quality test methods of Paeonia suffruticosa].

    Science.gov (United States)

    Cao, Ya-Yue; Zhu, Zai-Biao; Guo, Qiao-Sheng; Liu, Li; Wang, Chang-Lin

    2014-11-01

    In order to optimize the testing methods for Paeonia suffruticosa seed quality, and provide basis for establishing seed testing rules and seed quality standard of P. suffruticosa. The seed quality of P. suffruticosa from different producing areas was measured based on the related seed testing regulations. The seed testing methods for quality items of P. suffruticosa was established preliminarily. The samples weight of P. suffruticosa was at least 7 000 g for purity analysis and was at least 700 g for test. The phenotypic observation and size measurement were used for authenticity testing. The 1 000-seed weight was determined by 100-seed method, and the water content was carried out by low temperature drying method (10 hours). After soaking in distilled water for 24 h, the seeds was treated with different temperature stratifications of day and night (25 degrees C/20 degrees C, day/night) in the dark for 60 d. After soaking in the liquor of GA3 300 mg x L(-1) for 24 h, the P. suffruticos seeds were cultured in wet sand at 15 degrees C for 12-60 days for germination testing. Seed viability was tested by TlC method.

  6. Is seed conditioning essential for Orobanche germination?

    Science.gov (United States)

    Plakhine, Dina; Ziadna, Hammam; Joel, Daniel M

    2009-05-01

    Parasitic Orobanchaceae germinate only after receiving a chemical stimulus from roots of potential host plants. A preparatory phase of several days that follows seed imbibition, termed conditioning, is known to be required; thereafter the seeds can respond to germination stimulants. The aim of this study was to examine whether conditioning is essential for stimulant receptivity. Non-conditioned seeds of both Orobanche cumana Wallr. and O. aegyptiaca Pers. [syn. Phelipanche aegyptiaca (Pers.) Pomel] were able to germinate in response to chemical stimulation by GR24 even without prior conditioning. Stimulated seeds reached maximal germination rates about 2 weeks after the onset of imbibition, no matter whether the seeds had or had not been conditioned before stimulation. Whereas the lag time between stimulation and germination response of non-conditioned seeds was longer than for conditioned seeds, the total time between imbibition and germination was shorter for the non-conditioned seeds. Unlike the above two species, O. crenata Forsk. was found to require conditioning prior to stimulation. Seeds of O. cumana and O. aegyptiaca are already receptive before conditioning. Thus, conditioning is not involved in stimulant receptivity. A hypothesis is put forward, suggesting that conditioning includes (a) a parasite-specific early phase that allows the imbibed seeds to overcome the stress caused by failing to receive an immediate germination stimulus, and (b) a non-specific later phase that is identical to the pregermination phase between seed imbibition and actual germination that is typical for all higher plants.

  7. Seed counting system evaluation using arduino microcontroller

    Directory of Open Access Journals (Sweden)

    Paulo Fernando Escobar Paim

    2018-01-01

    Full Text Available The development of automated systems has been highlighted in the most diverse productive sectors, among them, the agricultural sector. These systems aim to optimize activities by increasing operational efficiency and quality of work. In this sense, the present work has the objective of evaluating a prototype developed for seed count in laboratory, using Arduino microcontroller. The prototype of the system for seed counting was built using a dosing mechanism commonly used in seeders, electric motor, Arduino Uno, light dependent resistor and light emitting diode. To test the prototype, a completely randomized design (CRD was used in a two-factorial scheme composed of three groups defined according to the number of seeds (500, 1000 and 1500 seeds tested, three speeds of the dosing disc that allowed the distribution in 17, 21 and 32 seeds per second, with 40 repetitions evaluating the seed counting prototype performance in different speeds. The prototype of the bench counter showed a moderate variability of seed number of counted within the nine tests and a high precision in the seed count on the distribution speeds of 17 and 21 seeds per second (s-1 up to 1500 seeds tested. Therefore, based on the observed results, the developed prototype presents itself as an excellent tool for counting seeds in laboratory.

  8. Interactions between seed traits and digestive processes determine the germinability of bird-dispersed seeds.

    Science.gov (United States)

    Kleyheeg, Erik; Claessens, Mascha; Soons, Merel B

    2018-01-01

    Waterbirds disperse a wide range of plant seeds via their guts, promoting biotic connectivity between isolated habitat patches. However, the intensity of digestive forces encountered by seeds, and therefore their potential to survive digestive tract passage, varies within and between waterbird species. Here, we investigate under controlled conditions how the interaction between seed traits and digestive strategies affect the germinability of seeds following waterbird-mediated dispersal. We exposed seeds of 30 wetland plant species to the main digestive processes in the dabbling duck digestive system: mechanical, chemical and intestinal digestion. These were simulated by 1) a pressure test and scarification treatment, 2) incubation in simulated gastric juice, and 3) incubation in intestinal contents of culled mallards (Anas platyrhynchos). We evaluated their separate and combined effects on seed germination, and identified the role of seed size and seed coat traits in resisting the digestive forces. Seeds were generally resistant to separate digestive processes, but highly sensitive to a combination. Resistance to mechanical break-down was reduced by up to 80% by chemical pre-treatment, especially for seeds with permeable coats. Scarified seeds were 12-17% more vulnerable to chemical and intestinal digestive processes than undamaged seeds. Large seeds and seeds with thin, permeable coats were particularly sensitive to chemical and intestinal digestion. These results indicate that efficient digestion of seeds requires multiple digestive processes. The gizzard, responsible for mechanical digestion, plays a key role in seed survival. Omnivorous birds, which have relatively light gizzards compared to pure herbivores or granivores, are thus most likely to disperse seeds successfully. Regardless of digestive strategy, small seeds with tough seed coats are most resistant to digestion and may be adapted to endozoochorous dispersal by waterbirds.

  9. Interactions between seed traits and digestive processes determine the germinability of bird-dispersed seeds

    Science.gov (United States)

    Soons, Merel B.

    2018-01-01

    Waterbirds disperse a wide range of plant seeds via their guts, promoting biotic connectivity between isolated habitat patches. However, the intensity of digestive forces encountered by seeds, and therefore their potential to survive digestive tract passage, varies within and between waterbird species. Here, we investigate under controlled conditions how the interaction between seed traits and digestive strategies affect the germinability of seeds following waterbird-mediated dispersal. We exposed seeds of 30 wetland plant species to the main digestive processes in the dabbling duck digestive system: mechanical, chemical and intestinal digestion. These were simulated by 1) a pressure test and scarification treatment, 2) incubation in simulated gastric juice, and 3) incubation in intestinal contents of culled mallards (Anas platyrhynchos). We evaluated their separate and combined effects on seed germination, and identified the role of seed size and seed coat traits in resisting the digestive forces. Seeds were generally resistant to separate digestive processes, but highly sensitive to a combination. Resistance to mechanical break-down was reduced by up to 80% by chemical pre-treatment, especially for seeds with permeable coats. Scarified seeds were 12–17% more vulnerable to chemical and intestinal digestive processes than undamaged seeds. Large seeds and seeds with thin, permeable coats were particularly sensitive to chemical and intestinal digestion. These results indicate that efficient digestion of seeds requires multiple digestive processes. The gizzard, responsible for mechanical digestion, plays a key role in seed survival. Omnivorous birds, which have relatively light gizzards compared to pure herbivores or granivores, are thus most likely to disperse seeds successfully. Regardless of digestive strategy, small seeds with tough seed coats are most resistant to digestion and may be adapted to endozoochorous dispersal by waterbirds. PMID:29614085

  10. Evaluation of Wheat (Triticum aestivum, L. Seed Quality of Certified Seed and Farm-Saved Seed in Three Provinces of Iran

    Directory of Open Access Journals (Sweden)

    Khazaei Fardin

    2016-06-01

    Full Text Available The objective of this study was to study the seed quality aspects of wheat (Triticum aestivum L. and the extent of weed seed contamination present in wheat seeds produced in different regions of Iran. Four districts (cities, each including 12 fields (six certified seed fields and six farm-saved seed fields, were selected in each regions (provinces. One kilogram of the wheat seed sample was collected from each field for analysis in the laboratory. Wheat seeding was commonly done by farm-saved seed sourced from within the farm due to the high costs of certified seeds purchased from outside sources, followed by the low seed quality. The use of a farm-saved seed resulted in a higher germination rate and a lower mean time to germination compared with another system. The more positive temperatures experienced by mother plants could decrease the number of normal seedling and seedling length vigor index. Generally there was virtually no difference about physiological quality between certified seed and farm-saved seed sector that is related to lower quality of certified seed. The certified produced seeds had the lower number of weed seed, species and genus before and after cleaning. The highest seed purity and 1000 seed weight was obtained from the certified seed production system. The need for cleaning the farm-saved seed samples before sowing is one of the important findings of this survey.

  11. Effects of elevated CO2 and temperature on seed quality

    DEFF Research Database (Denmark)

    Hampton, John G; Boelt, Birte; Rolston, M P

    2013-01-01

    production on three seed quality components: seed mass, germination and seed vigour. In response to elevated CO2, seed mass has been reported to both increase and decrease in C3 plants, but not change in C4 plants. Increases are greater in legumes than non-legumes, and there is considerable variation among...... species. Seed mass increases may result in a decrease of seed nitrogen (N) concentration in non-legumes. Increasing temperature may decrease seed mass because of an accelerated growth rate and reduced seed filling duration, but lower seed mass does not necessarily reduce seed germination or vigour. Like...

  12. Noahs Ark of the seeds

    International Nuclear Information System (INIS)

    Tristan, R. M.

    2015-01-01

    The so-called 'vault of the end of the world', located in the archipelago Arctic Svalbard, brings together more than 860,000 samples seeds from around the world. The purpose of your existence -like the of thousands of other banks of its kind in all the planet - is to preserve the genetic diversity of crops, most of them are now disappearing. An international treaty approved by the United Nations, and in force since 2004, allowed the construction of this 'Sanctuary' where more than one hundred countries maintain their own banks of seeds, freezing them to 18 degrees below zero to lower its biological activity. (Author)

  13. Multi-purpose utilization of hydrothermal resources within the City of El Centro. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Sherwood, P.B.; Province, S.G.; Yamasaki, R.N.; Newman, K.L.

    1979-04-01

    The engineering and economic feasibility of utilizing geothermal heat from the Heber KGRA for space heating/cooling and water heating for domestic and industrial process applications within the City of El Centro was investigated. The analysis proceeds through an engineering survey of present conventional energy utilization within the City to identify and evaluate those end uses which could potentially utilize geothermal heat as a substitute for fossil fuel or electrically produced heating and cooling. A general engineering and economic evaluation of heat and cold delivery alternatives followed including evaluations of geothermal fluid transmission options, alternative refrigeration techniques, heat and cold transmission media options, probable systems interfaces, materials evaluations, projected conventional energy costs, life cycle costs for existing conventional systems, projected pricing requirements for privately and municipally developed geothermal resources, the relative distribution costs of heat delivery options, and estimated residential and commercial retrofit costs. A cost-effective plan for large-scale utilization of geothermal energy in El Centro for district heating/cooling and industrial applications was developed from this evaluation and preliminary conclusions drawn. Institutional barriers and environmental impacts associated with geothermal development in the City were also evaluated. Potentially adverse impacts were identified along with mitigating measures that should either completely eliminate or reduce these adverse effects to levels of insignificance.

  14. Mapas mentales del centro histórico de Santa Marta

    Directory of Open Access Journals (Sweden)

    Ubaldo Rodríguez de Ávila Sharol Cortés

    2014-05-01

    Full Text Available Al establecer y definir las principales argumentaciones teóricas que pueden acotar (desde nuestra visión y definir los conceptos de representación socioespacial, estudiado a través de la técnica y a la vez metodología de Mapas Mentales, como una forma de conocimiento social, elaboramos este nuevo aporte en el que se plantea una investigación que quiere ofrecer un modelo acerca de cómo abordar metodológicamente el tema que nos ocupa. Extracto científico del trabajo de grado de los autores del mismo, estudiantes de grado de Psicología de la Universidad del Magdalena, titulado: Representación Socioespacial del Centro Hisórico de Santa Marta, situándonos en la necesidad de conocer los mapas mentales como construcción de la realidad y la manera como el conocimiento se construye en ella. De este modo, la principal meta que se traza es la comprensión de los Mapas Mentales que los sujetos que usan el centro Histórico de Santa Marta tienen formado. (Duazary 2006; 2:153-163

  15. Sentidos atribuídos à oficina de teatro em Centros Socioeducativos

    Directory of Open Access Journals (Sweden)

    Fernanada Roberta Lemos Silva

    2014-04-01

    Full Text Available http://dx.doi.org/10.5007/2178-4582.2014v48n1p35 O presente artigo parte integrante dessa pesquisa busca apresentar a proposta de Arte e Cultura da Fundação CASA apontando em processos realizados em oficinas de Teatro com adolescentes em conflito com a lei os principais conflitos entre fragilidade e potencialidades para o desenvolvimento de oficinas culturais em Centros Socioeducativos. Para tal estabeleceram-se encontros com jovens egressos desses Centros e dois arte-educadores  (professores de Teatro, foram realizadas oito entrevistas com jovens de 17 á 26 anos de idade, moradores de bairros periféricos de Ribeirão Preto SP (Parque Ribeirão Preto, Jardim Progresso, Jardim Juliana, Campos Elíseos, Parque dos Servidores. As entrevistas foram realizadas de maneira semi-estruturada, a fim de se obter uma melhor compreensão do mundo do jovem entrevistado, através da forma como fundamenta suas opiniões. Buscou-se dessa forma, reconstruir por meio da análise das entrevistas recolhidas, qual o impacto de vivências proporcionadas pela arte no comportamento dos jovens que cumpriram medida socioeducativa

  16. Chemical analysis of interstitial water in rivers of Centro Experimental Aramar area

    Energy Technology Data Exchange (ETDEWEB)

    Matoso, Erika; Goncalves, Julia Rosa, E-mail: ematoso@hotmail.com [Centro Tecnologico da Marinha (CE/CTM-SP), Ipero, SP (Brazil). Centro Experimental Aramar; Cadore, Solange [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Instituto de Quimica. Departamento de Quimica Analitica

    2013-07-01

    This work presents the results from analysis of samples of interstitial waters for the following chemical parameters: F{sup -}, Cl{sup -}, NO{sub 2}{sup -}, Br{sup -}, NO{sub 3}{sup -}, PO{sub 4}{sup 3-}, SO{sub 4}{sup 2-} by Ionic Chromatography, Na, K by Flame Photometry, Al, Cd, Pb, Cu, Cr, Fe, Mn, Ni, Zn by ICP OES, pH and the biological parameter: toxicity by natural bioluminescent bacterium (Vibrio fischeri) bioassay. The samples were obtained from sediments collected in 6 different sampling locations, in a ratio of 10-km-long from Centro Experimental Aramar (CEA). The rivers were the samples came from were: Ipanema River, Sorocaba River and Ribeirao do Ferro River. The interstitial water was extracted by centrifugation (3000 rpm, 20 min, 4 deg C). Analysis for metal concentrations were carried out after acid digestion and others tests proceeded in the sample after filtration without further treatment. These data will contribute to evaluate the distribution of contaminants and nutrients in these collecting points and this toxicity status. The release of soluble substances from sediments to interstitial water provides one way for bioaccumulation of these compounds and may affect the survival or development of aquatic organisms. The analysis in interstitial water has never been evaluated at this sampling points and the importance of this study is collecting data providing a better knowledge of the hydrological conditions in which Centro Experimental Aramar is located. (author)

  17. La satisfacción de los clientes de los centros deportivos municipales de Barcelona

    Directory of Open Access Journals (Sweden)

    Amal Elasri Ejjaberi

    2015-03-01

    Full Text Available El objetivo de este trabajo es identificar y analizar las variables que más influyen en la satisfacción del cliente en los centros deportivos de Barcelona. Los datos fueron recogidos en una encuesta entre los clientes actuales de centros deportivos municipales. Un análisis factorial aplicado a esta información revela cinco dimensiones que subyacen a los múltiples componentes de la oferta de servicios en dichas instalaciones: su calidad, los recursos humanos, la comunicación, el entorno social y la relación calidad-precio. Las variables generadas fueron incorporadas a un modelo de regresión múltiple en el que la variable dependiente fue la satisfacción del cliente. De acuerdo con los resultados las mujeres y los usuarios mayores de 60 años valoran más positivamente el servicio recibido, mientras que a mayor nivel de estudios, más exigentes son los clientes. Finalmente, un gerente debe prestar atención en primer lugar a la calidad de las instalaciones seguido de la comunicación, los recursos humanos, la relación calidad precio y el entorno social, por este orden.

  18. Chemical analysis of interstitial water in rivers of Centro Experimental Aramar area

    International Nuclear Information System (INIS)

    Matoso, Erika; Goncalves, Julia Rosa; Cadore, Solange

    2013-01-01

    This work presents the results from analysis of samples of interstitial waters for the following chemical parameters: F - , Cl - , NO 2 - , Br - , NO 3 - , PO 4 3- , SO 4 2- by Ionic Chromatography, Na, K by Flame Photometry, Al, Cd, Pb, Cu, Cr, Fe, Mn, Ni, Zn by ICP OES, pH and the biological parameter: toxicity by natural bioluminescent bacterium (Vibrio fischeri) bioassay. The samples were obtained from sediments collected in 6 different sampling locations, in a ratio of 10-km-long from Centro Experimental Aramar (CEA). The rivers were the samples came from were: Ipanema River, Sorocaba River and Ribeirao do Ferro River. The interstitial water was extracted by centrifugation (3000 rpm, 20 min, 4 deg C). Analysis for metal concentrations were carried out after acid digestion and others tests proceeded in the sample after filtration without further treatment. These data will contribute to evaluate the distribution of contaminants and nutrients in these collecting points and this toxicity status. The release of soluble substances from sediments to interstitial water provides one way for bioaccumulation of these compounds and may affect the survival or development of aquatic organisms. The analysis in interstitial water has never been evaluated at this sampling points and the importance of this study is collecting data providing a better knowledge of the hydrological conditions in which Centro Experimental Aramar is located. (author)

  19. Observed versus simulated meteorological data: a comparison study for Centro Experimental Aramar

    International Nuclear Information System (INIS)

    Beu, Cássia Maria Leme

    2017-01-01

    Centro Experimental Aramar (CEA) is a campus of the Centro Tecnológico da Marinha em São Paulo (CTMSP), responsible for carrying out the Brazilian Navy´s Nuclear Program. As a nuclear facility, the atmosphere is one of the environmental parameters that must be monitored, both for normal operation and accidental situations. Atmospheric dispersion models are powerful tools in this direction, but their results strongly depend of the quality of the input data. Therefore, good information must be provided to the dispersion models, and data from weather forecast models can be suitable for this role. The purpose of this work is to evaluate the performance of regional weather forecast models for CEA site. CEA is located at a complex terrain area, which can add complexity to the air fluxes and reduce the forecast accuracy, which may be critical during an accidental situation. For this work, two regional atmospheric models were chosen: BRAMS and Eta. These models have been intensively improved for Brazilian researchers for the South America characteristics, are free software and offer the possibility to run locally with higher resolution than are currently available by research organizations. Basic variables (temperature, relative humidity, and wind speed and direction) for 48 hours simulations from Eta and BRAMS were compared with CEA observed data. Results from this work will conducted the next steps for running dispersion atmospheric models on an operational basis for CEA site. (author)

  20. POLÍTICAS PÚBLICAS URBANAS: o caso do centro de Santos

    Directory of Open Access Journals (Sweden)

    André da Rocha Santos

    2008-01-01

    Full Text Available This article evaluates the process of the urban revitalization center of Santos. Its ́ analysis object is the Centro, Paquetá, Vila Nova, Valongo and part of Vila Mathias neighborhoods. Its ́ objective is to describe the mentioned process since the approval of the 1998 Managing Plan until the current days. The introduction points out the municipal public power ́s and planning secretariat ́s role in the conduction of the public policies involving these areas. The second section of this article analyses certain aspects of the "Alegra Centro Program" which ́s objective is to support the enterprises implantation and the functioning activities directed to commerce and the tourism, among the evaluation of the urban landscape and the cultural local patrimony. The third part of this paper deals with the public power ́s projects and interventions developed and spread through marketing actions. This article ́s fourth section shows the general housing matter in the central area and its ́ precarious situation. Finally, the conclusion evaluates the process of urban revitalization of the Brazilian city of Santos and the city ́s habitation policies.

  1. Observed versus simulated meteorological data: a comparison study for Centro Experimental Aramar

    Energy Technology Data Exchange (ETDEWEB)

    Beu, Cássia Maria Leme, E-mail: cassia.beu@marinha.mil.br [Centro Tecnológico da Marinha em São Paulo (CEA/CTMSP), Iperó, SP (Brazil). Centro Experimental Aramar

    2017-07-01

    Centro Experimental Aramar (CEA) is a campus of the Centro Tecnológico da Marinha em São Paulo (CTMSP), responsible for carrying out the Brazilian Navy´s Nuclear Program. As a nuclear facility, the atmosphere is one of the environmental parameters that must be monitored, both for normal operation and accidental situations. Atmospheric dispersion models are powerful tools in this direction, but their results strongly depend of the quality of the input data. Therefore, good information must be provided to the dispersion models, and data from weather forecast models can be suitable for this role. The purpose of this work is to evaluate the performance of regional weather forecast models for CEA site. CEA is located at a complex terrain area, which can add complexity to the air fluxes and reduce the forecast accuracy, which may be critical during an accidental situation. For this work, two regional atmospheric models were chosen: BRAMS and Eta. These models have been intensively improved for Brazilian researchers for the South America characteristics, are free software and offer the possibility to run locally with higher resolution than are currently available by research organizations. Basic variables (temperature, relative humidity, and wind speed and direction) for 48 hours simulations from Eta and BRAMS were compared with CEA observed data. Results from this work will conducted the next steps for running dispersion atmospheric models on an operational basis for CEA site. (author)

  2. Centro Multiusos en Mannheim. Frei Otto. Doblando la malla hasta hacer una concha

    Directory of Open Access Journals (Sweden)

    Fernando G. Pino

    2016-04-01

    Full Text Available En 2015 Frei Otto recibió el Premio Pritzker. Como homenaje a este importante arquitecto del siglo XX este escrito busca profundizar en el Centro Polivalente de Mannheim como uno de los principales ejemplos de la arquitectura resuelta con la técnica Grid Shell, que consiste en una manera de doblar una superficie plana hecha con una malla de madera lo suficientemente flexible como para transformarse en una superficie ondulada que podría ofrecer un espacio complejo y rico, listo para ser usado. En clara oposición a los proyectos conocidos del estadio Olímpico de Munich o el Pabellón en la Exposición Universal de Montreal, con este edificio Frei Otto explora una estructura de compresión que sigue la geometría y la organización de las estructuras de la naturaleza. Este campo de experimentación e investigación acerca de las estructuras naturales es el centro en torno al que giró su trabajo durante toda su vida en el Instituto de Estructuras Ligeras en Stuttgart. La experimentación con maquetas y con técnicas de fotogrametría para extraer datos fidedignos relativos al estudio con las superficies de pompas de jabón, así como los estudios con pesos colgados de finas cadenas para obtener las formas finales de sus proyectos, caracterizan su trabajo.

  3. Sistema de control de acceso e interbloqueo para el Centro de Inmunología Molecular

    Directory of Open Access Journals (Sweden)

    Marcel Pedreira Marcel

    2013-10-01

    Full Text Available En el presente trabajo se muestra el diseño y desarrollo de un sistema de control de acceso e interbloqueo en el Centro de Inmunología Molecular debido a que los sistemas comerciales de este tipo instalados en dicho centro no cumplen todas las necesidades. El sistema propuesto consta de dos tarjetas electrónicas: el controlador de puertas y el controlador de interbloqueo, ambas fueron desarrolladas a base de microcontrolador PIC de Microchip programados usando el compilador PCW de CCS. Estas tarjetas son capaces de comunicarse con dispositivos de lectura de código de barras, proximidad, biométricos o cualquier otro que transmita por protocolo Wiegand. Además deben ser configuradas para que operen de manera deseada, para ello fue desarrollada una aplicación software de parametrización utilizando Qt como framework, e implementando prácticas eficientes de ingeniería de software. Esta aplicación se comunica con los controladores vía RS232 con protocolo Modbus.

  4. Determinan Kepuasan Pelanggan Pada Penyewaan Lapangan Centro Futsal Cabang Daan Mogot

    Directory of Open Access Journals (Sweden)

    Dwi Susanto

    2016-09-01

    Full Text Available The Determinant of Customer's Satisfaction to Centro Futsal Branch of Daan MogotThe aim of this research is to analyze the determinat of consumer satisfaction at Futsal Centro. This research is using multiple regression as tools of analysis. The independent variables of this research are service quality, promotion, and location. The result shows that the most influence in providing customer satisfaction is the location amounted to 0.364 and then followed by the variable of service quality amounted to 0.349 and followed by the promotion variable equal to 0.229. Then through the F test showed that the variables of service quality, well-deserved promotions and locations to test the dependent variable customer satisfaction on leasing futsal field. Through correlation R value is 0.811 or 81.1% and the determination coefficient value (R2 is 0.657, or 65.7.DOI: 10.15408/ess.v6i2.3574

  5. Clasificación multiaxial de agresores de pareja en centros penitenciarios

    Directory of Open Access Journals (Sweden)

    Ismael Loinaz

    2011-01-01

    Full Text Available En el presente estudio ex post facto se describe la evaluación y clasificación llevada a cabo en un centro penitenciario con 48 agresores de pareja y se comparan los resultados con un estudio desarrollado anteriormente con la misma metodología en otro centro. Se analiza, a través del MCMI-III, la posible influencia de la personalidad junto a los síndromes clínicos en la conducta violenta contra la pareja. Se han evaluado las distintas variables de interés mediante una entrevista estructurada, el STAXI-2, IPDMV y CTS-2. Los resultados obtenidos permiten avalar la aproximación tipológica indicando que es posible la clasificación de los agresores en, al menos, dos grupos que se diferencian según las variables descritas internacionalmente. El grupo denominado normalizado representa el 43,75% de la muestra y se caracteriza por menor psicopatología, menor distorsión cognitiva y mayor control de su ira. El grupo denominado antisocial supone el 56,25% de la muestra, son los sujetos con mayor psicopatología (tanto en personalidad como en síndromes clínicos, presentan mayor distorsión cognitiva y su violencia es más compleja.

  6. HOSPITALIDADE URBANA DO CENTRO HISTÓRICO DE PELOTAS/RS

    Directory of Open Access Journals (Sweden)

    Camila Osório Dutra

    2017-11-01

    Full Text Available O presente trabalho tem como objeto de estudo a Hospitalidade Urbana do Centro Histórico da cidade de Pelotas/RS. Tendo como objetivo compreender se o Centro Histórico desta cidade, é, ou não, hospitaleiro, através das categorias de análise: Acessibilidade, Identidade e Legibilidade. Para isto, foram realizadas pesquisas bibliográficas e questionários com moradores e turistas em diferentes pontos da cidade. Relatou-se que a hospitalidade de legibilidade se refere, cada indivíduo cada usuário de um espaço tem uma visão, uma percepção, do que é mais interessante, do que é guardado em suas experiências e consequentemente em suas memórias visuais. Além disso, em futuros estudos, outros pontos que podem ser abordados são as condições de acesso em diferentes municípios e as identidades de diferentes cidades.

  7. Un intento de segmentación integral de los usuarios de centros deportivos.

    Directory of Open Access Journals (Sweden)

    Antonio Rial Boubeta

    2009-03-01

    Full Text Available Los actuales centros deportivos dan la bienvenida a un número cada vez más elevado y heterogéneo de usuarios/as. La creciente variedad de oferta físico-deportiva y de individuos con diferentes necesidades, motivaciones y actitudes han conducido a la ausencia de un único perfil de usuario. Esto significa que los gestores deportivos tienen que dividir o segmentar a los clientes que utilizan sus instalaciones y servicios con el objetivo de satisfacer de forma más efectiva sus necesidades. Hasta la fecha, han sido escasos los estudios empíricos realizados aplicando criterios de segmentación de mercado a contextos deportivos (Kim y Kim, 1998; Luna-Arocas y Tang, 2005. El objetivo principal del presente estudio es examinar los diversos perfiles de participantes deportivos desde un punto de vista integral. Variables sociodemográficas, actitudinales y motivacionales han sido consideradas de forma simultánea para obtener una nueva propuesta de segmentación de los usuarios de los actuales centros deportivos. La utilización del análisis multivariante, y en concreto el uso combinado de diferentes procedimientos de análisis de conglomerados (Ward y K-medias, nos han permitido identificar cuatro segmentos diferentes de usuarios que resultan de gran interés tanto desde un punto de vista conceptual como de gestión.

  8. EL PROTECCIONISMO EN RETIRADA. LAS DIFICULTADES DEL CENTRO AZUCARERO ARGENTINO (1912-1923

    Directory of Open Access Journals (Sweden)

    María Lenis

    2007-01-01

    Full Text Available El objetivo de este artículo es analizar el impacto que tuvo la sanción de la llamada ley Saavedra Lamas en el Centro Azucarero Argentino. Asimismo se intentará explicar de qué manera la llegada del radicalismo al poder, obligó a la corporación empresaria a cambiar sus estrategias y prácticas de lobby. En este sentido se contemplará el rol cumplido por la Revista Azucarera, publicación mensual del Centro Azucarero, y por los representantes tucumanos en el Congreso de la Nación. Por último, se examinarán los cambios introducidos por la reforma estatutaria de 1923, especialmente se atenderá la creación de las llamadas comisiones regionales, sobre todo la de Tucumán, y en que qué medida este proceso de descentralización expresaba las tensiones existentes entre los industriales azucareros.

  9. A visibilidade do trabalho de enfermagem no centro cirúrgico por meio da fotografia

    Directory of Open Access Journals (Sweden)

    Lucia Helena Reus

    Full Text Available O presente artigo origina-se de uma pesquisa realizada junto aos trabalhadores do centro cirúrgico do Hospital de Clínicas de Porto Alegre, Brasil, analisando os modos de trabalhar da equipe de enfermagem e sua relação com pacientes e demais profissionais da saúde. Utilizou-se o pensamento de Foucault, enfatizando-se as articulações dos jogos de saber e poder, bem como os efeitos de verdade no trabalho, sustentados pelo olhar desses trabalhadores e usando-se a estratégia da fotografia em uma perspectiva da pesquisa-intervenção. O centro cirúrgico foi retratado como um espaço do olhar, da vigilância e do controle. O saber é determinado a partir da visibilidade dos corpos, sejam de pacientes ou de trabalhadores, e este saber é legitimado quando emana do brilho do foco cirúrgico. O trabalho com fotografias possibilitou olhares diversos e a criação de um espaço de discussão.

  10. Increasing seed size and quality by manipulating BIG SEEDS1 in legume species.

    Science.gov (United States)

    Ge, Liangfa; Yu, Jianbin; Wang, Hongliang; Luth, Diane; Bai, Guihua; Wang, Kan; Chen, Rujin

    2016-11-01

    Plant organs, such as seeds, are primary sources of food for both humans and animals. Seed size is one of the major agronomic traits that have been selected in crop plants during their domestication. Legume seeds are a major source of dietary proteins and oils. Here, we report a conserved role for the BIG SEEDS1 (BS1) gene in the control of seed size and weight in the model legume Medicago truncatula and the grain legume soybean (Glycine max). BS1 encodes a plant-specific transcription regulator and plays a key role in the control of the size of plant organs, including seeds, seed pods, and leaves, through a regulatory module that targets primary cell proliferation. Importantly, down-regulation of BS1 orthologs in soybean by an artificial microRNA significantly increased soybean seed size, weight, and amino acid content. Our results provide a strategy for the increase in yield and seed quality in legumes.

  11. Mycoflora in Exhumed Seeds of Opuntia tomentosa and Its Possible Role in Seed Germination

    Directory of Open Access Journals (Sweden)

    María Esther Sánchez-Coronado

    2011-01-01

    Full Text Available The funicular cover of the Opuntia tomentosa seed limits imbibition; germination occurs only when the funicle is weakened or the funicular valve is removed. We investigated the role of fungi in funicular weakening and seed germination. Seeds that had been either buried in one of two sites or stored in the laboratory were germinated with and without a valve. Disinfected or nondisinfected seeds and their naked embryos were cultivated on agar or PDA. None of the 11 identified fungal genera grew on the disinfected control seeds or the embryos. The mycoflora present on disinfected and nondisinfected exhumed seeds suggest that the fungal colonization occurred in the soil and differed between the burial sites. Exhumed seeds with and without a valve germinated in high percentages, whereas only the control seeds without a valve germinated. Scanning electron micrographs showed that the hyphae penetrated, cracked, and eroded the funicular envelope of exhumed seeds.

  12. Alleviate Seed Ageing Effects in Silybum marianum by Application of Hormone Seed Priming

    Directory of Open Access Journals (Sweden)

    Seyed Ata SIADAT

    2015-09-01

    Full Text Available Most of the medicinal plants have seed dormancy or poor seed germination. This is due to their natural compounds or their morphological structure. Existence of such mechanisms makes the seeds able to endure harsh environments, stressful conditions or natural ageing. Different seed enhancement treatments were proposed in order to improve seed germination. In this study, it was examined Silybum marianum seed longevity (0, 48 and 72 hour of ageing and the response to seed priming when using different concentrations of cytokinin (50, 200, 350 and 500 ppm and different duration of treatment (8, 12 and 24 hour. Results revealed that ageing could be successfully alleviated using seed priming. Seed ageing significantly affected seed germination and vigour. Application of cytokinin considerably improved seed vigour in aged and non aged seeds. The most effective seed priming treatment was with 500 ppm cytokine, with the duration of 24 hours. In conclusion, it can be recommend the used of plant growth regulators like cytokine, as a good priming agent, to recover losses of seed quality and improve germination characteristics.

  13. Agrowaste: Phytosterol from Durian Seed

    OpenAIRE

    D. Mohd Nazrul Hisham; J. Mohd Lip; R. Suri; H. Mohamed Shafit; Z.Kharis; K. Shazlin; A. Normah; M.F. Nurul Nabilah

    2012-01-01

    Presence of phytosterol compound in Durian seed (Durio zibethinus) or known as King of fruits has been discovered from screening work using reagent test. Further analysis work has been carried out using mass spectrometer in order to support the priliminary finding. Isolation and purification of the major phytosterol has been carried out using an open column chromatography. The separation was monitored using thin layer chromatography (TLC). Major isolated compounds and pur...

  14. Preplanting irradiation of tomato seeds

    International Nuclear Information System (INIS)

    Maltseva, S.

    1976-01-01

    Seeds of the tomato varieties Pioneer-2, Drouzhba and Ace were treated prior to planting with Co 60 gamma rays in optimal doses of 2000 R and the varieties No 10 x Bison, Triumph and Extase with 1500 R. This treatment raised the germination energy and the plants started flowering and ripening earlier. The index of earliness was enhanced but the overall yield was equal to that of the control plants. (author)

  15. Estudo do centro de massa e estabilidade de quatro posturas básicas do Kung-fu Pak Hok

    OpenAIRE

    Miranda,Pedro Jeferson; Brinatti,André Maurício; Silva,Silvio Luiz Rutz da; Godoy,Marino Luiz Michelin

    2016-01-01

    Este trabalho trata da análise dos centros de massa e do cálculo da estabilidade das quatro posturas básicas do Kung Fu Pak Hok. Embora a biomecânica tenha surgido em 1960, a sua aplicação em artes marciais, como no Kung Fu ainda é pouco frequente. Apesar de haver estudos de movimentos do Kung Fu, não há trabalhos sobre o centro de massa e a estabilidade para as posturas mais básicas. Este trabalho como objetivo descrever o centro de massa e a estabilidade das quatro posturas mais básicas do ...

  16. Social skills headteachers of schools centers. Las habilidades sociales en directores de centros escolares

    Directory of Open Access Journals (Sweden)

    Margarita Salvador

    2009-10-01

    Full Text Available

    This study aims to discover the extent of public school directors have developed and practiced their social skills, in performing his managerial functions, to plan and propose, based on the results, the training necessary additions to the exercise such leadership reach higher levels of efficiency. The sample was composed of 99 directors of schools of Public Elementary and Secondary Education, in the provinces of Granada and Almeria. The results obtained in this research provide us with reliable knowledge, hitherto non-existent, the profiles that characterize the current directors of schools, in their social and interpersonal skills. A summary of results is as follows: a half of the principals (49% obtained scores that are above the 75 centile, in behavior and social skills assertion b nearly half of the directors in our sample are characterized by implementing social skills, through behavior, where the "self-expression", "say no", "initiate interactions” and “express their anger", are the most relevant components and c the level of the center, the number of students at the school and the old director has made some significant differences.


    Key words: Social skills, school directors, managerial function, leadership.

    Este estudio pretende conocer, en qué medida los directores escolares de centros públicos tienen desarrolladas y practican las habilidades sociales en el desempeño de sus funciones directivas, con objeto de planificar y proponer, en función de los resultados, los necesarios complementos formativos, para que el ejercicio de dicha función directiva alcance niveles más altos de eficacia. La muestra ha estado compuesta por 99 directores, de Centros Educativos Públicos de Primaria y Secundaria, de las provincias de Granada y Almería. Los resultados obtenidos en esta investigación nos proporcionan un conocimiento fiable, hasta ahora inexistente, sobre los perfiles que caracterizan a los

  17. Proteomics of Rice Seed Germination

    Directory of Open Access Journals (Sweden)

    Dongli eHe

    2013-07-01

    Full Text Available Seed is a condensed form of plant. Under suitable environmental conditions, it can resume the metabolic activity from physiological quiescent status, and mobilize the reserves, biosynthesize new proteins, regenerate organelles and cell membrane, eventually protrude the radicle and enter into seedling establishment. So far, how these activities are regulated in a coordinated and sequential manner is largely unknown. With the availability of more and more genome sequence information and the development of mass spectrometry (MS technology, proteomics has been widely applied in analyzing the mechanisms of different biological processes, and proved to be very powerful. Regulation of rice seed germination is critical for rice cultivation. In recent years, a lot of proteomic studies have been conducted in exploring the gene expression regulation, reserves mobilization and metabolisms reactivation, which brings us new insights on the mechanisms of metabolism regulation during this process. Nevertheless, it also invokes a lot of questions. In this mini-review, we summarized the progress in the proteomic studies of rice seed germination. The current challenges and future perspectives were also discussed, which might be helpful for the following studies.

  18. PHO1 Exports Phosphate from the Chalazal Seed Coat to the Embryo in Developing Arabidopsis Seeds.

    Science.gov (United States)

    Vogiatzaki, Evangelia; Baroux, Célia; Jung, Ji-Yul; Poirier, Yves

    2017-10-09

    Seed production requires the transfer of nutrients from the maternal seed coat to the filial endosperm and embryo. Because seed coat and filial tissues are symplasmically isolated, nutrients arriving in the seed coat via the phloem must be exported to the apoplast before reaching the embryo. Proteins implicated in the transfer of inorganic phosphate (Pi) from the seed coat to the embryo are unknown despite seed P content being an important agronomic trait. Here we show that the Arabidopsis Pi exporters PHO1 and PHOH1 are expressed in the chalazal seed coat (CZSC) of developing seeds. PHO1 is additionally expressed in developing ovules. Phosphorus (P) content and Pi flux between the seed coat and embryo were analyzed in seeds from grafts between WT roots and scions from either pho1, phoh1, or the pho1 phoh1 double mutant. Whereas P content and distribution between the seed coat and embryo in fully mature dry seeds of these mutants are similar to the WT, at the mature green stage of seed development the seed coat of the pho1 and pho1 phoh1 mutants, but not of the phoh1 mutant, retains approximately 2-fold more P than its WT control. Expression of PHO1 under a CZSC-specific promoter complemented the seed P distribution phenotype of the pho1 phoh1 double mutant. CZSC-specific down-expression of PHO1 also recapitulated the seed P distribution phenotype of pho1. Together, these experiments show that PHO1 expression in the CZSC is important for the transfer of P from the seed coat to the embryo in developing seeds. Copyright © 2017 Elsevier Ltd. All rights reserved.

  19. Radioactive seed immobilization techniques for interstitial brachytherapy

    International Nuclear Information System (INIS)

    Yan, K.; Podder, T.; Buzurovic, I.; Hu, Y.; Dicker, A.; Valicenti, R.; Yu, Y.; Messing, E.; Rubens, D.; Sarkar, N.; Ng, W.

    2008-01-01

    In prostate brachytherapy, seeds can detach from their deposited sites and move locally in the pelvis or migrate to distant sites including the pulmonary and cardiac regions. Undesirable consequences of seed migration include inadequate dose coverage of the prostate and tissue irradiation effects at the site of migration. Thus, it is clinically important to develop seed immobilization techniques. We first analyze the possible causes for seed movement, and propose three potential techniques for seed immobilization: (1) surgical glue, (2) laser coagulation and (3) diathermy coagulation. The feasibility of each method is explored. Experiments were carried out using fresh bovine livers to investigate the efficacy of seed immobilization using surgical glue. Results have shown that the surgical glue can effectively immobilize the seeds. Evaluation of the radiation dose distribution revealed that the non-immobilized seed movement would change the planned isodose distribution considerably; while by using surgical glue method to immobilize the seeds, the changes were negligible. Prostate brachytherapy seed immobilization is necessary and three alternative mechanisms are promising for addressing this issue. Experiments for exploring the efficacy of the other two proposed methods are ongoing. Devices compatible with the brachytherapy procedure will be designed in future. (orig.)

  20. Partial dehydration and cryopreservation of Citrus seeds.

    Science.gov (United States)

    Graiver, Natalia; Califano, Alicia; Zaritzky, Noemí

    2011-11-01

    Three categories of seed storage behavior are generally recognized among plant species: orthodox, intermediate and recalcitrant. Intermediate seeds cannot be stored in liquid nitrogen (LN) without a previous partial dehydration process. The water content (WC) of the seeds at the moment of immersion in LN must be regarded as the most critical factor in cryopreservation. The purpose of this study was to investigate the basis of the optimal hydration status for cryopreservation of Citrus seeds: C. sinensis (sweet orange), C. paradisi (grapefruit), C. reticulata (mandarin) in LN. To study the tolerance to dehydration and LN exposure, seeds were desiccated by equilibration at relative humidities between 11 and 95%. Sorption isotherms were determined and modeled; lipid content of the seeds was measured. Seed desiccation sensitivity was quantified by the quantal response model. Differential scanning calorimetry (DSC) thermograms were determined on cotyledon tissue at different moisture contents to measure ice melting enthalpies and unfrozen WC. Samples of total seed lipid extract were also analyzed by DSC to identify lipid transitions in the thermograms. The limit of hydration for LN Citrus seeds treatment corresponded to the unfrozen WC in the tissue, confirming that seed survival strictly depended on avoidance of intracellular ice formation. Copyright © 2011 Society of Chemical Industry.

  1. Electrophysiology of pumpkin seeds: Memristors in vivo.

    Science.gov (United States)

    Volkov, Alexander G; Nyasani, Eunice K; Tuckett, Clayton; Greeman, Esther A; Markin, Vladislav S

    2016-01-01

    Leon Chua, the discoverer of a memristor, theoretically predicted that voltage gated ion channels can be memristors. We recently found memristors in different plants such as the Venus flytrap, Mimosa pudica, Aloe vera, apple fruits, and in potato tubers. There are no publications in literature about the existence of memristors in seeds. The goal of this work was to discover if pumpkin seeds might have memristors. We selected Cucurbita pepo L., cv. Cinderella, Cucurbita maxima L. cv Warty Goblin, and Cucurbita maxima L., cv. Jarrahdale seeds for this analysis. In these seeds, we found the presence of resistors with memory. The analysis was based on cyclic voltammetry where a memristor should manifest itself as a nonlinear two-terminal electrical element, which exhibits a pinched hysteresis loop on a current-voltage plane for any bipolar cyclic voltage input signal. Dry dormant pumpkin seeds have very high electrical resistance without memristive properties. The electrostimulation by bipolar sinusoidal or triangular periodic waves induces electrical responses in imbibed pumpkin seeds with fingerprints of memristors. Tetraethylammonium chloride, an inhibitor of voltage gated K(+) channels, transforms a memristor to a resistor in pumpkin seeds. NPPB (5-Nitro-2-(3-phenylpropylamino)benzoic acid) inhibits the memristive properties of imbibed pumpkin seeds. The discovery of memristors in pumpkin seeds creates a new direction in the understanding of electrophysiological phenomena in seeds.

  2. Germination of beans and snap beans seed

    Directory of Open Access Journals (Sweden)

    Zdravković Milan

    2000-01-01

    Full Text Available The aim of this study was to investigate germination of good bean seed of the variety Galeb and the bad bean seed of the same variety. We were also interested in germination of bean and snap bean seed damaged by grain weevil, and in germination of the seed treated by freezing which was aimed at controlling grain weevil by cold. We also recorded the differences between bean and snap bean seed, which was or was not treated by freezing in laboratory conditions. This investigation was carried out by applying the two factorial block system. The obtained results were evaluated by the variance analysis and x2 test These results suggest that the bean seed of a bad fraction had low levels of germination, but still it was present. Although the seed of good appearance was carefully selected, germination was slightly lower than it should have been. The seed with the large amount of grain weevils performed a high level germination in laboratory conditions. There were no differences in germination between the seed injured by grain weevil either in beans or in snap beans. As for the seed treated or untreated by freezing, there also were no differences between beans and snap beans. .

  3. Local evolution of seed flotation in Arabidopsis.

    Directory of Open Access Journals (Sweden)

    Susana Saez-Aguayo

    2014-03-01

    Full Text Available Arabidopsis seeds rapidly release hydrophilic polysaccharides from the seed coat on imbibition. These form a heavy mucilage layer around the seed that makes it sink in water. Fourteen natural Arabidopsis variants from central Asia and Scandinavia were identified with seeds that have modified mucilage release and float. Four of these have a novel mucilage phenotype with almost none of the released mucilage adhering to the seed and the absence of cellulose microfibrils. Mucilage release was modified in the variants by ten independent causal mutations in four different loci. Seven distinct mutations affected one locus, coding the MUM2 β-D-galactosidase, and represent a striking example of allelic heterogeneity. The modification of mucilage release has thus evolved a number of times independently in two restricted geographical zones. All the natural mutants identified still accumulated mucilage polysaccharides in seed coat epidermal cells. Using nuclear magnetic resonance (NMR relaxometry their production and retention was shown to reduce water mobility into internal seed tissues during imbibition, which would help to maintain seed buoyancy. Surprisingly, despite released mucilage being an excellent hydrogel it did not increase the rate of water uptake by internal seed tissues and is more likely to play a role in retaining water around the seed.

  4. Selected aspects of tiny vetch [Vicia hirsuta (L. Gray S.F.] seed ecology: generative reproduction and effects of seed maturity and seed storage on seed germination

    Directory of Open Access Journals (Sweden)

    Magdalena Kucewicz

    2012-12-01

    Full Text Available Vicia hirsuta (L. Gray S.F. (tiny vetch is a common and persistent segetal weed. Tiny vetch seeds and pods reach different stages of maturity during the crop harvest season. Some seeds that mature before cereal harvest are shed in the field and deposited in the soil seed bank, while others become incorporated into seed material. The objective of this study was to describe selected aspects of tiny vetch seed ecology: to determine the rate of individual reproduction of vetch plants growing in winter and spring grain crops and to evaluate the germination of seeds at different stages of maturity, subject to storage conditions. The seeds and pods of V. hirsuta were sorted according to their development stages at harvest and divided into two groups. The first group was stored under laboratory conditions for two months. In the autumn of the same year, the seeds were subjected to germination tests. The remaining seeds were stored in a storeroom, and were planted in soil in the spring. The germination rate was evaluated after 8 months of storage. Potential productivity (developed pods and flowers, fruit buds was higher in plants fruiting in winter wheat than in spring barley. Vetch plants produced around 17-26% more pods (including cracked, mature, greenish-brown and green pods and around 25% less buds in winter wheat than in spring barley. Immature seeds were characterized by the highest germination capacity. Following storage under laboratory conditions and stratification in soil, mature seeds germinated at a rate of several percent. After storage in a storeroom, seeds at all three development stages broke dormancy at a rate of 72- 75%. The high germination power of tiny vetch seeds stored in a storeroom indicates that this plant can be classified as an obligatory speirochoric weed species.

  5. Impurities in alfalfa seed and their impact on processing technology

    OpenAIRE

    Đokić, Dragoslav; Stanisavljević, Rade; Marković, Jordan; Terzić, Dragan; Anđelković, Bojan

    2012-01-01

    The aim of this research was to determine relevant parameters and optimal alfalfa seed processing technology by a comparative analysis of two systems of machinery for processing natural alfalfa seed of different purity (59.0% and 71.0%) and with different content of impurities. The relevant parameters monitored during the test were: pure seed (%), weed seeds and seeds of other crops (%), inert matter (%), amount of processed seed (kg), seed processing time (min), consumption of steel powder (...

  6. Explorando la Paradoja de Recuperación del Servicio en Deportes: Un Estudio en Centros de Fitness

    OpenAIRE

    Aparicio-Chueca, Pilar; Elasri-Ejjaberi, Amal; Triadó-Ivern, Xavier

    2017-01-01

    Los fallos en el servicio en centros deportivos pueden ocurrir en el día a día. La recuperación del servicio por parte de los gerentes es un aspecto importante que las empresas han de tener en cuenta para el éxito futuro de la organización, con el objetivo de conseguir un nivel de satisfacción adecuado por parte de los clientes. El objetivo de este trabajo se centra en analizar los perfiles de usuarios de centros deportivos que han expresado tener un motivo de queja y comparar el nivel de sat...

  7. ESTRESSE OCUPACIONAL E SAÚDE MENTAL DOS PROFISSIONAIS DO CENTRO DE ESPECIALIDADES MÉDICAS DE ARACAJU

    OpenAIRE

    Marcelino Filho, Arthur; Araújo, Tania Maria de

    2015-01-01

    ResumoAs características ambientais e o modo de organização do trabalho em centros especializados em saúde podem produzir situações de estresse e efeitos negativos sobre a saúde dos trabalhadores. O objetivo do estudo foi avaliar a saúde mental dos profissionais de saúde da rede especializada de Aracaju (Sergipe) e as situações de estresse ocupacional com base no modelo esforço-recompensa. Estudo transversal realizado em 2011 com 94 profissionais de saúde em atividade em dois centros de atend...

  8. Determinación del centro de esfuerzo en un troquel de corte utilizando un programa CAD

    OpenAIRE

    BALDI DE COSTA, CLARA

    2006-01-01

    Se discute la importancia de la correcta ubicación del centro de esfuerzo en un troquel de corte para minimizar las cargas laterales sobre los , elementos de guía. Se describe el proceso matemático para determinar el centro de esfuerzo a través del cálculo del centroide de una curva, y sucesivamente se proporciona un método de aproximación que utiliza la capacidad de AutoCAD de calcular el centroide de una región plana bidimensional. The importance of a correct positioning of the force cen...

  9. LA REFORMA FALLIDA DE LOS CENTROS DE ATENCIÓN MÚLTIPLE EN MÉXICO

    OpenAIRE

    Ismael García Cedillo; Silvia Romero Contreras; Karla Motilla Negrete; Claudia Isabel Zapata Martínez

    2009-01-01

    El objetivo del presente estudio consiste en identificar la manera en que se reorganizaron los Centros de Atención Múltiple para atender los retos implícitos en la integración educativa y cómo valoran dichos cambios los integrantes de la comunidad educativa. Los cambios en la legislación que se realizaron en México con motivo del inicio de la integración educativa abarcaban a la educación especial en su conjunto. Con respecto a las escuelas de educación especial (ahora Centros de Atención Múl...

  10. Instalación eléctrica en baja y media tensión en un centro docente

    OpenAIRE

    Costa Esteban, Fernando

    2015-01-01

    En el presente estudio se pretende desarrollar la instalación eléctrica en baja y media tensión en un centro docente. Para ello, se calcularán las cargas que puede tener, a pleno rendimiento, el centro educativo según la distribución de alumbrado y fuerza (enchufes y otras tomas eléctricas de distintas potencias). Además toda la instalación deberá realizarse teniendo en cuenta la normativa vigente. Para la distribución de alumbrado se utilizarán luminarias tipo led que, adem...

  11. Propuesta de desarrollo organizacional para la competitividad del Club Dinámico del centro de la ciudad de Pereira

    OpenAIRE

    Cardona Londoño, Luisa Fernanda; Ospina Duque, Valentina

    2014-01-01

    Este proyecto es la respuesta a una propuesta de Desarrollo Organizacional para 38 Mipymes ubicadas en el centro de la ciudad de Pereira, cuyos elementos comerciales varían entre bisutería, calzado, joyería y vestuario. La investigación fue realizada dentro del macro Proyecto “Club Dinámico del Centro de la Ciudad de Pereira”, dirigido por FENALCO Risaralda, el cual pretende integrar el sector comercio con el sector turismo mediante la formulación de diversas estrategias que permitan asociar ...

  12. Implantación de un Sistema de Gestión de la Calidad en un Centro Educativo

    OpenAIRE

    Carrasco Montero, Carmen María

    2014-01-01

    El objeto de este proyecto final del Máster de Educación Secundaria Obligatoria y Bachillerato, Formación Profesional y Enseñanza de Idiomas, consiste en definir, cómo implantar, gestionar y mejorar un Sistema de Gestión de Calidad para centros educativos mediante la metodología de Dirección de Proyectos. Teniendo como misión alcanzar la Excelencia y situar a los Centros en los mejores puestos en la clasificación escolar dentro del Sistema Educativo. Departamento de Informát...

  13. Influência da posição das sementes no fruto do cacaueiro sôbre a germinação e desenvolvimento das mudas Influence of seed location in the cocoa fruit on germination and seedling growth

    Directory of Open Access Journals (Sweden)

    Mário Cardoso

    1963-01-01

    Full Text Available Foram plantadas separadamente, para comparação, amostras de sementes oriundas da ponta, do centro e da base de frutos de cacaueiro. Não foram notadas diferenças, quer na germinação das sementes, quer no desenvolvimento das mudas, em duas variedades estudadas.Seed samples from the top, center, and bottom of the cocoa fruit (Theobroma leiocarpa Bern. were planted separately for comparison. No difference in germination of the seeds or growth of the seedlings for the three types of samples was noticed.

  14. Desidratação osmótica do mamão chileno (Vasconcellea pubescens) e influência da temperatura e concentração da solução sobre a cinética de transferência de matéria

    OpenAIRE

    Vega-Gálvez, Antonio; Palacios, Marlene; Boglio, Francisca; Pássaro, Catarina; Jeréz, Catalina; Lemus-Mondaca, Roberto

    2007-01-01

    El objetivo de este trabajo fue estudiar la cinética de deshidratación osmótica de la papaya chilena (Vasconcellea pubescens), utilizando dos variables experimentales: la temperatura (30, 40, 50 °C) y concentración (40, 50 y 60%) de la solución osmótica. Se determinó la variación de masa total, masa de agua y masa de sólidos solubles y se modeló con las ecuaciones difusionales, además en esta investigación se consideró y utilizó una modificación de la ecuación propuesta por Biswal-Bozorgmehr....

  15. Effects of rodent species, seed species, and predator cues on seed fate

    Science.gov (United States)

    Sivy, Kelly J.; Ostoja, Steven M.; Schupp, Eugene W.; Durham, Susan

    2011-07-01

    Seed selection, removal and subsequent management by granivorous animals is thought to be a complex interaction of factors including qualities of the seeds themselves (e.g., seed size, nutritional quality) and features of the local habitat (e.g. perceived predator risk). At the same time, differential seed selection and dispersal is thought to have profound effects on seed fate and potentially vegetation dynamics. In a feeding arena, we tested whether rodent species, seed species, and indirect and direct predation cues influence seed selection and handling behaviors (e.g., scatter hoarding versus larder hoarding) of two heteromyid rodents, Ord's kangaroo rat ( Dipodomys ordii) and the Great Basin pocket mouse ( Perognathus parvus). The indirect cue was shrub cover, a feature of the environment. Direct cues, presented individually, were (1) control, (2) coyote ( Canis latrans) vocalization, (3) coyote scent, (4) red fox ( Vulpes vulpes) scent, or (5) short-eared owl ( Asio flammeus) vocalization. We offered seeds of three sizes: two native grasses, Indian ricegrass ( Achnatherum hymenoides) and bluebunch wheatgrass ( Pseudoroegneria spicata), and the non-native cereal rye ( Secale cereale), each in separate trays. Kangaroo rats preferentially harvested Indian ricegrass while pocket mice predominately harvested Indian ricegrass and cereal rye. Pocket mice were more likely to scatter hoard preferred seeds, whereas kangaroo rats mostly consumed and/or larder hoarded preferred seeds. No predator cue significantly affected seed preferences. However, both species altered seed handling behavior in response to direct predation cues by leaving more seeds available in the seed pool, though they responded to different predator cues. If these results translate to natural dynamics on the landscape, the two rodents are expected to have different impacts on seed survival and plant recruitment via their different seed selection and seed handling behaviors.

  16. Seed source, seed traits, and frugivore habits: Implications for dispersal quality of two sympatric primates.

    Science.gov (United States)

    Benítez-Malvido, Julieta; González-Di Pierro, Ana Ma; Lombera, Rafael; Guillén, Susana; Estrada, Alejandro

    2014-06-01

    • Premise of the study: Frugivore selection of fruits and treatment of seeds together with seed deposition site are crucial for the population dynamics of vertebrate-dispersed plants. However, frugivore species may influence dispersal quality differently even when feeding on the same fruit species and, while animals disperse some seeds, others simply fall beneath the parent plant.• Methods: In southern Mexico, we investigated to see if within-species seed traits (i.e., length, width, weight, and volume) and germination success differed according to seed source. For five tropical tree species we obtained ingested seeds from two sources, howler monkey (Alouatta pigra) and spider monkey (Ateles geoffroyi) feces; and noningested seeds from two sources, the ground and tree crowns (with predispersed seeds used as control).• Key results: A principal components' analysis showed that traits of seeds ingested by howler monkeys differed from other sources while seeds ingested by spider monkeys were similar to noningested seeds. Howlers consumed on average the larger seeds in Ampelocera hottlei, Brosimum lactescens, and Dialium guianense. Both primate species consumed the smaller seeds in Spondias mombin, while no seed trait differences among seed sources were found in Spondias radlkoferi. For all five tree species, germination rate was greatest for seeds ingested by howler monkeys.• Conclusions: For the studied plant species, seed ingestion by howler monkeys confers higher dispersal quality than ingestion by spider monkeys or nondispersal. Dispersal services of both primate species, however, are not redundant and may contribute to germination heterogeneity within plant populations in tropical forests. © 2014 Botanical Society of America, Inc.

  17. Yield and quality of white mustard seed depending on the seeding dates

    Directory of Open Access Journals (Sweden)

    Jevđović Radosav

    2000-01-01

    Full Text Available The effect of sowing dates and harvest dates on yield and quality of white mustard seed been investigated in this study. During the experiment two sowing dates have been tested the first one based on the crops in March, and the other one when the direct sowing was carried out in late May, after the harvest of camomile crops. The harvest of the seed crops in the first seeding date was performed on 1st July, and the second on 15th September. Seed fractioning extracted the following fractions: large (3mm, medium (2 mm and small (1mm. I he objective of the laboratory' experiments was to observe the effect of the seed fraction size on the most important parameters of its quality (germination energy, total germination and absolute mass according to the stipulated terms. Based on the data obtained in the survey, it can be concluded that the seed yield is significantly affected by the varied seeding dates. Earlier seeding date produced significantly increased seed yield (1920 kg/ha than the later seeding date (1160 kg/ha. According to the seed quality parameters, the best characteristics are found in the seed fraction of 3 mm, in both seeding and harvest dates.

  18. Activity uniformity of Ir-192 seeds

    International Nuclear Information System (INIS)

    Ling, C.C.; Gromadzki, Z.C.

    1981-01-01

    A simple device that uses materials and apparatus commonly available in a radiotherapy department has been designed, fabricated and used in routine quality control relative to the activity uniformity of clinical Ir-192 seeds in ribbons. Detailed evaluation indicated that this system is easy to use and can yield relative activity measurements of individual Ir-192 seeds accurate to within 2%. With this device, activity uniformity of commercial Ir-192 seeds from two manufacturers has been assessed. For the seven shipments of Ir-192 seeds studied, the root mean square variations of individual seed strength from the average of each shipment ranged from 3.4 to 7.1%. Variation in seed activity by more than +- 10% from the average is not uncommon

  19. Improving tomato seed quality- challenges and possibilities

    DEFF Research Database (Denmark)

    Shrestha, Santosh

    The thesis investigates the possibility of using single seed near-infrared (NIR) spectroscopy, multispectral imaging (MSI) and NIR hyperspectral imaging (NIR-HSI) in combination with chemometrics for rapid determination of the tomato seed quality. The results of the PhD study are compiled in four...... manuscripts (MS). These non-destructive methods show the potential of sorting tomato seeds as per their viability and varietal identity. The results are discussed in the context of possible contribution from these methods in the improvement of the seed quality in Nepal. In MS I, potential application of NIR...... spectroscopy in combination with chemometrics for prediction of tomato seed viability is demonstrated. The work in MS I also emphasises on identifying the important NIR spectral regions for the chemometric model that are relevant to the separation of viable and non-viable seeds. The NIR-HIS method was also...

  20. Commercial Scale Production of Mushroom Liquid Seeds

    International Nuclear Information System (INIS)

    Rosnani Abdul Rashid; Hassan Hamdani Hassan Mutaat; Mohd Meswan Maskom; Khairuddin Abdul Rahim

    2015-01-01

    Mushroom liquid seed production technology was developed by Malaysian Nuclear Agency (Nuclear Malaysia) in the late 1990s. Initially, the liquid seeds were used mainly in the solid state fermentation process for converting oil palm empty fruit bunch fibres into ruminant feed. Considering widespread problems encountered by mushroom growers from use of solid seeds, especially in cases of contaminant agents infecting cultivated bags and inconsistencies in yield, we diverted our focus to utilising liquid seeds as alternative inocula for mushroom cultivation. These problems provide us opportunities to look into the issues and address the problems faced by mushroom growers. However, the technology of producing liquid seed at laboratory scale needs to be primed for commercial production. This paper discusses developmental aspects of mushroom liquid seed at commercial scale for the advancement of the country's mushroom industry. (author)

  1. Claves para el Desarrollo del Plan de Convivencia en los Centros Educativos desde una Perspectiva Integral

    Directory of Open Access Journals (Sweden)

    Juan Carlos Torrego

    2014-02-01

    Full Text Available Este artículo muestra las principales conclusiones obtenidas en una investigación realizada en un centro de Educación Secundaria de Madrid (España. Su propósito ha sido conocer y comprobar cómo se están desarrollando en la práctica, los planteamientos que sobre convivencia se han realizado desde marcos de intervención global, como el que se propone en el Modelo Integrado (Torrego, 2006, 2008, así como identificar aspectos claves para el desarrollo de planes de convivencia en los centros educativos. Es una investigación cualitativa, realizada mediante un diseño de Estudio de Caso Único, donde se han combinado técnicas de análisis de documentos y datos, con la realización de entrevistas en profundidad a diversos miembros de la comunidad educativa. El interés del caso radica en que el centro trata la convivencia desde una perspectiva global, sobre la base del citado modelo integrado y en que destaca por los buenos resultados obtenidos en la mejora de la convivencia en los últimos años. Las conclusiones ponen de manifiesto la importancia de abordar la convivencia desde una perspectiva integral acorde con las características del contexto, que contemple aspectos curriculares, estructuras específicas para la mejora de la convivencia y que promueva la participación democrática de la comunidad educativa; además se evidencia la necesidad de una formación específica en convivencia, el papel central de la acción tutorial y de las metodologías cooperativas. Los aspectos detectados que precisan un mayor desarrollo son: la generalización de la formación en convivencia a todo el alumnado, la profundización en las medidas curriculares, la mejora de la acción tutorial y la generación de recursos adecuados para intervenir en los casos del alumnado con más dificultades.

  2. REDVET en el Centro de Información de la Red de Agricultura de EE.UU (AgNIC)

    OpenAIRE

    REDVET

    2010-01-01

    ResumenAgNIC http://www.agnic.org/ es el Centro de Información de Red de Agricultura de EE.UU, una alianza de instituciones que trabajan paraofrecer un acceso rápido y fiable a fuentes de información agraria de calidad basada en concepto de "centros de excelencia".

  3. Pistachio (Pistacia vera seed oil composition: geographic situation and variety effects

    Directory of Open Access Journals (Sweden)

    Chahed, T.

    2008-03-01

    Full Text Available This study was aimed at characterizing four Tunisian pistachio cultivations (Pistacia vera from the Mateur (North, Nabeul (North-East, Kairouan (Middle and Sfax (Middle- East regions and two varieties, Mateur and Ohadi, considering fatty acid composition and main lipid class contents (polar lipids, diacylglycerols, triacylglycerols and free fatty acids in ripe seeds. Lipid classes were separated using thin layer chromatography, and fatty acid methyl esters (FAMEs were analyzed by gas chromatography. Oleic acid (C18:1 Δ9 was the major fatty acid for all samples; those of the Mateur region (the northern region differed significantly with the lowest content in C18:1 (54.2 % of total fatty acids and the highest in C18:2 (24.1 %. The total amount of fatty acids (TFA in the seeds of Ohadi variety was significantly lower than that of the Mateur variety from the Sfax region. Triacylglycerols were most abundant in pistachio seeds from Nabeul (98.5% of total glycerolipids.Este estudio tiene como objetivo caracterizar cuatro cultivos de pistacho (Pistacia vera de Túnez, de las regiones de Mateur (Norte, Nabeul (Nordeste, Kairouan (Centro y Sfax (Centro-Este y dos variedades, Mateur and Ohadi, considerando la composición en ácidos grasos y de lípidos mayoritarios (lípidos polares, diglicéridos, triglicéridos y ácidos grasos libres de semillas maduras. Los lípidos se separaron mediante cromatografía en capa fina, y los ésteres metílicos de los ácidos grasos (FAMEs se analizaron por cromatografía de gases. El ácido oleico (C18:1 Δ9 fue el mayoritario en todas las muestras; las de la región de Mateur (Norte fueron significativamente distintas, presentando el contenido más bajo de C18:1 (54.2 % del total de ácidos grasos y más alto de C18:2 (24.1 %. La cantidad total de ácidos grasos (TFA en las semillas de la variedad Ohadi fue significativamente más bajo que el de la variedad Mateur de la región de Sfax. Los triglicéridos fueron

  4. Quality assurance applied to Radiological Protection Program of CPHR - Centro de Proteccion Y Higiene de las Radiaciones; Aseguramiento de la calidad aplicado al programa de proteccion radiologica del CPHR - Centro de Proteccion y Higiene de las Radiaciones

    Energy Technology Data Exchange (ETDEWEB)

    Marrero Garcia, M.; Jova Sed, L.; Domenech Nieves, H.; Hernandez Sainz, A. [Centro de Proteccion y Higiene de las Radiaciones, La Habana (Cuba)

    2001-07-01

    The quality assurance in establishment that use ionizing radiation sources, is according to international recommendations of radiation protection programs. This work intends to present the experience of the Centro de Proteccion y Higiene de las Radiaciones (CPHR), in the implementation of requirements of quality in their Radiological Protection Program.

  5. Chemical solution seed layer for rabits tapes

    Science.gov (United States)

    Goyal, Amit; Paranthaman, Mariappan; Wee, Sung-Hun

    2014-06-10

    A method for making a superconducting article includes the steps of providing a biaxially textured substrate. A seed layer is then deposited. The seed layer includes a double perovskite of the formula A.sub.2B'B''O.sub.6, where A is rare earth or alkaline earth metal and B' and B'' are different rare earth or transition metal cations. A superconductor layer is grown epitaxially such that the superconductor layer is supported by the seed layer.

  6. Effects of seed priming and water potential on seed germination and ...

    African Journals Online (AJOL)

    Administrator

    2011-05-23

    May 23, 2011 ... (without seed drying), primed and 12 h drying on seed germination of wheat .... completely with the lower half and the paper were rolled and placed ..... water stress and control of germination: a review. Plant Cell Environ.

  7. [Seed geography: its concept and basic scientific issues].

    Science.gov (United States)

    Yu, Shun-Li; Wang, Zong-Shuai; Zeren, Wangmu

    2010-01-01

    In this paper, a new concept 'seed geography' was provided, and its definition, research contents, and scientific issues were put forward. Seed geography is a newly developed interdisciplinary science from plant geography, seed ecology, and phytosociology, which studies the geographic variation patterns of seed biological traits as well as their relationships with environmental factors from macroscopic to microscopic, and the seed formation, development, and change trends. The main research contents would include geography of seed mass, geography of seed chemical components, geography of seed morphology, geography of seed cell biological characteristics, geography of seed physiological characteristics, geography of seed genetic characteristics, and geography of flower and fruit. To explore the scientific issues in seed geography would help us to better understand the long-term adaptation and evolution of seed characteristics to natural environments.

  8. [The research of Valeriana amurensis seed germination characteristics].

    Science.gov (United States)

    Liu, Juan; Yang, Chun-Rong; Jiang, Bo; Fang, Min; Du, Juan

    2011-10-01

    To study the effect of different treatments on the Valeriana amurensis seed germination rate. Used different chemical reagents and seed soakings on the routine germination test and the orthogonal test of the Valeriana amurensis seed, calculated the germination rate under different germination condition. Valeriana amurensis treated with different chemical reagends had different germination rate. The suitable immersion time could enhance Valeriana amurensis seed germination rate. Different treatment time, different disposal temperature, different germination temperature would have an impact on the Valeriana amurensis seed germination rate. In order to raise the Valeriana amurensis seed germination rate, use appropriate treatment on the seed before plant seeds; The seed growing must under suitable time and temperature.

  9. New design of experiment combined with UV-Vis spectroscopy for extraction and estimation of polyphenols from Basil seeds, Red seeds, Sesame seeds and Ajwan seeds

    Science.gov (United States)

    Mabood, Fazal; Gilani, Syed Abdullah; Hussain, Javid; Alshidani, Sulaiman; Alghawi, Said; Albroumi, Mohammed; Alameri, Saif; Jabeen, Farah; Hussain, Zahid; Al-Harrasi, Ahmed; Al Abri, Zahra K. M.; Farooq, Saima; Naureen, Zakira; Hamaed, Ahmad; Rasul Jan, M.; Shah, Jasmin

    2017-05-01

    New experimental designs for the extraction of polyphenols from different seeds including Basil seed, Red seed, Sesame seeds and Ajwan seeds were investigated. Four variables the concentration and volume of methanol and NaOH solutions as well as the temperature and time of extraction were varied to see their effect on total phenol extraction. The temperature was varied in the range from 25 °C to 200 °C while the time in the range from 30 to 200 minutes. Response surface methodology was used to optimize the extraction parameters. The estimation of polyphenols was measured through phenols reduction UV-Vis spectroscopic method of phosphotungstic-phosphomolybdic acids (Folin-Ciocalteu's reagent). Calibration curve was made by using tannic acid as a polyphenols standard in the concentration range from 0.1 to 10 ppm. The regression line obtained shows the value of correlation coefficient i.e. R = 0.930 and Root mean square error of cross validation (RMSEC) value of 0.0654. The Basil seeds were found containing the highest amount of total phenols i.e. 785.76 mg/100 g. While the Sesame seeds having the least amount i.e. 33.08 mg/100 g. The Ajwan seeds and the Red seeds are containing the medium amounts i.e. 379 mg/100 g and 220.54 mg/100 g respectively.

  10. Regulatory redox state in tree seeds

    Directory of Open Access Journals (Sweden)

    Ewelina Ratajczak

    2017-12-01

    Full Text Available Peroxiredoxins (Prx are important regulators of the redox status of tree seeds during maturation and long-term storage. Thioredoxins (Trx are redox transmitters and thereby regulate Prx activity. Current research is focused on the association of Trx with Prx in tree seeds differing in the tolerance to desiccation. The results will allow for better understanding the regulation of the redox status in orthodox, recalcitrant, and intermediate seeds. The findings will also elucidate the role of the redox status during the loss of viability of sensitive seeds during drying and long-term storage.

  11. New design of experiment combined with UV-Vis spectroscopy for extraction and estimation of polyphenols from Basil seeds, Red seeds, Sesame seeds and Ajwan seeds.

    Science.gov (United States)

    Mabood, Fazal; Gilani, Syed Abdullah; Hussain, Javid; Alshidani, Sulaiman; Alghawi, Said; Albroumi, Mohammed; Alameri, Saif; Jabeen, Farah; Hussain, Zahid; Al-Harrasi, Ahmed; Al Abri, Zahra K M; Farooq, Saima; Naureen, Zakira; Hamaed, Ahmad; Rasul Jan, M; Shah, Jasmin

    2017-05-05

    New experimental designs for the extraction of polyphenols from different seeds including Basil seed, Red seed, Sesame seeds and Ajwan seeds were investigated. Four variables the concentration and volume of methanol and NaOH solutions as well as the temperature and time of extraction were varied to see their effect on total phenol extraction. The temperature was varied in the range from 25°C to 200°C while the time in the range from 30 to 200minutes. Response surface methodology was used to optimize the extraction parameters. The estimation of polyphenols was measured through phenols reduction UV-Vis spectroscopic method of phosphotungstic-phosphomolybdic acids (Folin-Ciocalteu's reagent). Calibration curve was made by using tannic acid as a polyphenols standard in the concentration range from 0.1 to 10ppm. The regression line obtained shows the value of correlation coefficient i.e. R=0.930 and Root mean square error of cross validation (RMSEC) value of 0.0654. The Basil seeds were found containing the highest amount of total phenols i.e. 785.76mg/100g. While the Sesame seeds having the least amount i.e. 33.08mg/100g. The Ajwan seeds and the Red seeds are containing the medium amounts i.e. 379mg/100g and 220.54mg/100g respectively. Copyright © 2017 Elsevier B.V. All rights reserved.

  12. Patogenic fungi associated with blue lupine seeds

    Directory of Open Access Journals (Sweden)

    Bogdan Nowicki

    2013-12-01

    Full Text Available Over 10% ofseeds harvested in 1991 and 1992 (50 samples, 400 seeds in each sample proved to be infested with various fungi. Fusarium spp. and Botrytis cinerea were the most common pathogens isolated. Fusarium avenaceum was the most common and highIy pathogenic species. Fusarium semitectum and F. tricinctum were highly pathogenic to lupin seedlings but they were the least common Fusarium isolated from seeds. Similarily, Sclerotinia sclerotiorum was isolated only from 0,2% seeds tested but this fungus was highly pathogenic to lupin seedlings. Some other fungi know as lupin pathogens (F. oxysporum, Stemphylium botryosum, Pleiochaeta setosa and Phomopsis leptostromiformis were also noted in tested seeds.

  13. Occurrence of root parsley pathogens inhabiting seeds

    Directory of Open Access Journals (Sweden)

    Bogdan Nowicki

    2013-12-01

    Full Text Available The studies on root parsley pathogens inhabiting seeds were conducted during 1981-1988 and in 1993. Filter paper method with prefreezing and keeping under light was used. Each test sample comprised 500 seeds. Pathogenicity of collected fungal isolates was tested following two laboratory methods. 238 seed samples were studied. 18 fungal species were found but only 7 proved to be important pathogens of root parsley. The most common inhabitants of root parsley seeds were Alternaria spp. A.allernata occurred on 74,8% of seeds but only a few isolates showed to be slightly pathogenic while A.petroselini and A.radicina were higly pathogenic and inhabited 11,4 and 4,2% of seeds, respectively. The second group of important pathogens were species of Fusarium found on 3,9% of seeds. F.avenaceum dominated as it comprised 48% of Fusarium isolates, the next were as follow: F.culmorum - 20%, F.equiseti - 15%, F.solani - 8%, F.oxysporum - 7% and F.dimerum -2%. Some fungi like Botrytis cinerea, Septoria petroselini and Phoma spp. inhabited low number of seeds, respectively O,4; 0,5 and 0,8%, but they were highly pathogenic to root parsley. The fungi: Bipolaris sorokiniana, Drechslera biseptata, Stemphylium botryosum and Ulocludium consortiale showed slight pathogenicity. They were isolated from 3,8% of seeds.

  14. Microscale Insight into Microbial Seed Banks.

    Science.gov (United States)

    Locey, Kenneth J; Fisk, Melany C; Lennon, J T

    2016-01-01

    Microbial dormancy leads to the emergence of seed banks in environmental, engineered, and host-associated ecosystems. These seed banks act as reservoirs of diversity that allow microbes to persist under adverse conditions, including extreme limitation of resources. While microbial seed banks may be influenced by macroscale factors, such as the supply of resources, the importance of microscale encounters between organisms and resource particles is often overlooked. We hypothesized that dimensions of spatial, trophic, and resource complexity determine rates of encounter, which in turn, drive the abundance, productivity, and size of seed banks. We tested this using >10,000 stochastic individual based models (IBMs) that simulated energetic, physiological, and ecological processes across combinations of resource, spatial, and trophic complexity. These IBMs allowed realistic dynamics and the emergence of seed banks from ecological selection on random variation in species traits. Macroscale factors like the supply and concentration of resources had little effect on resource encounter rates. In contrast, encounter rates were strongly influenced by interactions between dispersal mode and spatial structure, and also by the recalcitrance of resources. In turn, encounter rates drove abundance, productivity, and seed bank dynamics. Time series revealed that energetically costly traits can lead to large seed banks and that recalcitrant resources can lead to greater stability through the formation of seed banks and the slow consumption of resources. Our findings suggest that microbial seed banks emerge from microscale dimensions of ecological complexity and their influence on resource limitation and energetic costs.

  15. Inheritance of seed coat color in sesame

    Directory of Open Access Journals (Sweden)

    Hernán Laurentin

    2014-04-01

    Full Text Available The objective of this work was to determine the inheritance mode of seed coat color in sesame. Two crosses and their reciprocals were performed: UCLA37 x UCV3 and UCLA90 x UCV3, of which UCLA37 and UCLA90 are white seed, and UCV3 is brown seed. Results of reciprocal crosses within each cross were identical: F1 seeds had the same phenotype as the maternal parent, and F2 resulted in the phenotype brown color. These results are consistent only with the model in which the maternal effect is the responsible for this trait. This model was validated by recording the seed coat color of 100 F2 plants (F3 seeds from each cross with its reciprocal, in which the 3:1 expected ratio for plants producing brown and white seeds was tested with the chi-square test. Sesame seed color is determined by the maternal genotype. Proposed names for the alleles participating in sesame seed coat color are: Sc1, for brown color; and Sc2, for white color; Sc1 is dominant over Sc2.

  16. Evaluation of seed vigor tests for determinig alfalfa seed quality

    Directory of Open Access Journals (Sweden)

    hamidreza tavakoli kakhki

    2009-06-01

    Full Text Available In order to determine the best seed vigor test in laboratory which may provide high correlation between alfalfa seedling stablishment in the field, two experiment were conducted in field as well as in laboratory. Four alfalfa cultivars Bami, Ghareyonjeh, Hamadani and Yazdi were used. Different seed vigor tests including standard germination, germination in low tempretaure (5c , germination rate, osmotic stress, accelerated ageing and electrical conductivity tests were laid out in a randomized completely design (RCD with four replications in laboratory experiment‌. The second experiment was carried out in a randomized completely block design (RCBD and each treatment replicated four times‌. Results revealed significant differences (p≤ 0.01 among different cultivars for establishment percentage and rate. Results also showed that there were significant correlations between electrical conductivity test and establishment percentage (r= -0.65 , p ≤ 0.01 as well as establishment rate (r= -0.80 , p ≤ 0.01. Correlation coefficients for rate and emergence percentage were significant and positive (r= 0.91, p ≤ 0.01 . Stepwise method disclosed that the regression model (y=165.23 – 0.15 x r2=0.64 , (p ≤ 0.01 for predicting rate of emergence could be recommended. In this model x (dependent variable is value of electrical conductivity and y (independent variable is rate of emergence.

  17. Chemical Characteristics of Pumpkin Seed Tempeh From Soybean and Pumpkin Seeds

    OpenAIRE

    Pujilestari, Shanti; Sandrasari, Diny A; Marida, Rimmaria

    2017-01-01

    The aim of this research was to find the effect of the combination of soybean and pumpkin seeds on the chemical characteristics of pumpkin seed tempeh. The pumpkin seed tempeh samples were analyzed for its water, ash, protein, fat, carbohydrate and crude fiber. Meanwhile, support data were isoflavone and zinc. Sensory hedonic was conducted by 25 untrained panelists for selecting the best formulation of soybean and pumpkin seeds in tempeh. The result shows the formulation of soybean and pumpki...

  18. Seed Placement in Permanent Breast Seed Implant Brachytherapy: Are Concerns Over Accuracy Valid?

    Energy Technology Data Exchange (ETDEWEB)

    Morton, Daniel, E-mail: dmorton@bccancer.bc.ca [Department of Medical Physics, BC Cancer Agency, Centre for the Southern Interior, Kelowna, British Columbia (Canada); Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia (Canada); Hilts, Michelle [Department of Medical Physics, BC Cancer Agency, Centre for the Southern Interior, Kelowna, British Columbia (Canada); Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia (Canada); Batchelar, Deidre [Department of Medical Physics, BC Cancer Agency, Centre for the Southern Interior, Kelowna, British Columbia (Canada); Crook, Juanita [Department of Radiation Oncology, BC Cancer Agency, Centre for the Southern Interior, Kelowna, British Columbia (Canada)

    2016-07-01

    Purpose: To evaluate seed placement accuracy in permanent breast seed implant brachytherapy (PBSI), to identify any systematic errors and evaluate their effect on dosimetry. Methods and Materials: Treatment plans and postimplant computed tomography scans for 20 PBSI patients were spatially registered and used to evaluate differences between planned and implanted seed positions, termed seed displacements. For each patient, the mean total and directional seed displacements were determined in both standard room coordinates and in needle coordinates relative to needle insertion angle. Seeds were labeled according to their proximity to the anatomy within the breast, to evaluate the influence of anatomic regions on seed placement. Dosimetry within an evaluative target volume (seroma + 5 mm), skin, breast, and ribs was evaluated to determine the impact of seed placement on the treatment. Results: The overall mean (±SD) difference between implanted and planned positions was 9 ± 5 mm for the aggregate seed population. No significant systematic directional displacements were observed for this whole population. However, for individual patients, systematic displacements were observed, implying that intrapatient offsets occur during the procedure. Mean displacements for seeds in the different anatomic areas were not found to be significantly different from the mean for the entire seed population. However, small directional trends were observed within the anatomy, potentially indicating some bias in the delivery. Despite observed differences between the planned and implanted seed positions, the median (range) V{sub 90} for the 20 patients was 97% (66%-100%), and acceptable dosimetry was achieved for critical structures. Conclusions: No significant trends or systematic errors were observed in the placement of seeds in PBSI, including seeds implanted directly into the seroma. Recorded seed displacements may be related to intrapatient setup adjustments. Despite observed seed

  19. Seed abnormalities and associated mycoflora of rain- fed wheat ...

    African Journals Online (AJOL)

    Owner

    seeds with discoloured embryo (germ) (1.2 – 1.5%) and brush (0.25 – 1.25%) ends. Fusarium graminearum and Helminthosporium sativum were associated with all seeds, ... Key words: Fungi, seed health testing, seed discolouration, wheat. INTRODUCTION. Abnormality in seeds is a major constraint in crop production in ...

  20. Nutritional value OF Bottle Gourd ( Lagenaria siceraria ) Seeds ...

    African Journals Online (AJOL)

    Whole seeds, dehulled seeds and seed coats of bottle gourd seed (Lagenaria siceraria) were analysed for their proximate, amino acids and mineral compositions. The results of the analysis showed that, whole seed has highest content of moisture (17.5 0.21%) and ash (5.80 0.83%) while dehulled had highest amount ...

  1. Use of linear discriminant function analysis in seed morphotype ...

    African Journals Online (AJOL)

    Variation in seed morphology of the Lima bean in 31 accessions was studied. Data were collected on 100-seed weight, seed length and seed width. The differences among the accessions were significant, based on the three seed characteristics. K-means cluster analysis grouped the 31 accessions into four distinct groups, ...

  2. Ecological correlates of seed survival after ingestion by Fallow Deer

    NARCIS (Netherlands)

    Mouissie, AM; Van der Veen, CEJ; Veen, GF; Van Diggelen, R

    1. The survival and retention of seeds was studied by feeding known quantities of seeds of 25 species to four captive Fallow Deer (Dama dama L.). To test for ecological correlates, plant species were selected to represent large variation in seed size, seed shape, seed longevity and habitat

  3. 7 CFR 201.57a - Dormant seeds.

    Science.gov (United States)

    2010-01-01

    ... REGULATIONS Germination Tests in the Administration of the Act § 201.57a Dormant seeds. Dormant seeds are viable seeds, other than hard seeds, which fail to germinate when provided the specified germination..., or application of germination promoting chemicals. (b) The percentage of dormant seed, if present...

  4. Seed regulation: choices on the road to reform

    NARCIS (Netherlands)

    Tripp, R.; Louwaars, N.P.

    1997-01-01

    Major changes in national seed systems, including the rapid development of commercial seed enterprises, the growth of non-governmental organization (NGO) seed projects, and the concomitant decline of public sector seed provision, call for a re-examination of seed regulatory frameworks in developing

  5. Conference Proceedings: Seed Ecology III - The Third International Society for Seed Science Meeting on Seeds and the Environment - "Seeds and Change"; June 20-June 24, 2010; Salt Lake City, Utah, USA

    Science.gov (United States)

    Rosemary Pendleton; Susan Meyer; Bitsy Schultz

    2010-01-01

    Seed Ecology III was held in Salt Lake City, Utah in June 2010, sharing the latest research on all aspects of seed ecology. Our meeting was organized around the theme "Seeds and Change." We welcomed contributions in any area of seed ecology. Our agenda also aimed to create bridges between seed ecology and plant conservation, restoration ecology, and global...

  6. Factors affecting the density of Brassica napus seeds

    NARCIS (Netherlands)

    Young, L.; Jalink, H.; Denkert, R.; Reaney, M.

    2006-01-01

    Brassica napus seed is composed of low density oil (0.92 g.cm(-3)) and higher density solids (1.3-1.45 g.cm(-3)). Seed buoyant density may potentially be used to determine seed oil content and to separate seeds with different oil contents, however, we have found that seeds with the lowest buoyant

  7. Lipids in citrus sinensis seeds

    International Nuclear Information System (INIS)

    Hamid, S.; Liaquat, L.; Khalid, B.; Khan, J.I.

    2003-01-01

    The seed oil of citrus sinensis when subjected to different physicochemical tests showed moisture 13.2%, ash 7.5%, ester value 1.29%, free fatty acid 0.4%. iodine value 65.0% and protein value 6.0%. According to lipid analysis. the oil was classified into hydrocarbons. wax esters, sterol esters, triglycerides. free fatty acids, 1,3 and 1,2 diglycerides, alcohols, sterols, monoglycerides, phosphatidylethanolamines, phosphatidylcholines and lysophosphatidylethanolamines. The fatty acid (C/sub 12.0/ - C/sub 21.0/) composition of all lipid classes was determined with the help of thin layer and gas liquid chromatography. (author)

  8. Il Centro Nascita Montessori. Dal neonato in famiglia al bambino e alla famiglia nel servizio educativo

    Directory of Open Access Journals (Sweden)

    Laura Franceschini

    2010-02-01

    Full Text Available Intervento al Workshop Internazionale “Infanzie e Famiglie in Europa”, del 16 ottobre 2009, presso la Facoltà di Scienze della Formazione, Via Filippo Re, 6 Bologna (Aula Magna. L’intervento illustra i valori fondativi del Centro Nascita Montessori dalle sue origini ai giorni nostri attraverso un percorso che si è allargato nel tempo: dalla focalizzata attenzione e cura al neonato in famiglia o nel brefotrofio fino agli anni ’60 alla cura della crescita del bambino nei servizi educativi e alla cura della relazione con le famiglie dagli anni ‘70 in poi. Tale espansione del campo di interesse e d’indagine operativa ha arricchito il patrimonio di competenze e di conoscenze del C.N.M..

  9. CENTRO REGIONAL DE INVESTIGACIONES OCEANOGRAFICAS PARA APOYO AL DESARROLLO DEL SECTOR PESQUERO DE CHILE

    OpenAIRE

    PRADO FIEDLER, ROBERTO

    1997-01-01

    Proyecto de infraestructura con el que se creó un consorcio especializado en oceangrafía física, química y biológica configurado por el instituto de oeceanología de la Universdiad de Valparaíso y la escuela de ciencias del mar de la Universidad Católica de Valparaíso, destinado a mejorar el conocimiento oceanográfico mediante la generación de una masa crítica de investigación concentrada en un centro regional. La infraestructura está destinada a sustentar proyectos específicos de investigació...

  10. Pobreza y Ocupación Laboral Urbana en la Región Centro

    Directory of Open Access Journals (Sweden)

    Liliana E. Pereyra

    2007-08-01

    Full Text Available El objetivo de este trabajo es tratar de explorar si existe un espacio socio-económico homogéneo entre las provincias que componen la Región Centro, en dos dimensiones: la incidencia de la pobreza, y las características de la ocupación laboral. Las restantes secciones, de naturaleza empírica, están destinadas a analizar en forma concreta las disparidades de la pobreza e indigencia, por una parte, y de los indicadores de la ocupación laboral, por otra. A continuación se presenta la intensidad y categoría ocupacional relacionadas con la condición pobreza o no. Finalmente, se resumirán los hallazgos más relevantes y se plantearán algunas recomendaciones.

  11. Resumen de tesis. Violencia y psicopatía en mujeres internas de un centro penitenciario

    OpenAIRE

    Rovelo Escoto, Nubia Carolina

    2014-01-01

    [ES]Este estudio se llevó a cabo con mujeres internas Centro de Readaptación Social Femenil San José el Alto, Querétaro, México, de quienes nos interesaba realizar una evaluación psicológica científica de la conducta violenta, rasgos de psicopatía y reincidencia para dotar de una técnica espacífica al sistema carcelario. Se trata de lograr una lasificación objetiva de las internas y una mejor comprensión de su personalidad, es el primer estudio Clínico/actuarial con internas de CeReSo Fe...

  12. La rehabilitación del centro histórico de Madrid

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    Herraez, Sigfrido

    2000-02-01

    Full Text Available Due to its large surface, over 320 hectares, the historical centre of Madrid included areas with a very high level of architectural, urban, social and environmental decay, there being greatly marginalised districts which shelter immigrant population . In view of this on-going urban decay of the historical centre, the three administrations (state, regional and local entered several agreements for the Rehabilitation of the Residential and Urban Heritage, which, together with the Cohesion Funds and the URBAN projects for Cinema and Theatre Itineraries, both financed by the European Union, intend to regenerate the urban base Coordination and management are in the hands of the Municipal Housing Corporation. The formula selected to intervene in the historical centre has been the declaration of Preferential Rehabilitation Areas, which focuses on the squares or main streets in each district. Another f ormula to intervene has been the rehabilitation of streets within the Cinema and Theatre Itineraries under the URBAN projects, the base of which is connected to the rehabilitation areas containing streets with prostitution and social marginalisation. The Cohesion Funds to upgrade the urban environment of Lavapies aim at adapting this district to the new needs of its population. Interventions aim at infrastructure renovation, street design improvement, accessibility, environment upgrading, rehabilitation of housing blocks to improve the quality of life of their inhabitants, developing accesses for cultural activities, support for the arts and crafts industry and small enterprises, social programmes and economic activity improvement Total investment in the Historical Centre amounts to 52,489 million pesetas (315 million euros up to the year 2002 .EI centro histórico de Madrid, debido a su gran extensión, mas de 320 hectáreas, presentaba zonas con elevado nivel de deterioro arquitectónico, urbanístico, social y medioambiental, existiendo barrios con gran

  13. O problema do transporte rodoviario para o escoamento da soja produzida no Centro-Oeste brasileiro

    OpenAIRE

    Vivian Helena Capacle

    2007-01-01

    Resumo:A região Centro-Oeste do país se destaca como um pólo produtor de soja, constituindo-se em um exemplo típico de região de fronteira. A expansão para a área de fronteira agrícola foi incentivada pelo governo, entre os anos 60-70, amparada por uma base infra-estrutural de transportes rodoviários. A partir dos anos 80, pela crise fiscal do Estado, o setor agrícola perde o apoio que tinha e a malha rodoviária brasileira perde participação nos recursos públicos para investimentos em sua amp...

  14. Los textos escolares en relacion a la axiologia de los centros educativos

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    Christina del Mastro

    1992-06-01

    Full Text Available La presente investigación titulada " Los Textos Escolares en relación a la axiología de los Centros Educativos", surge de nuestra inquietud, como equipo del Proyecto "Educación y Cultura de Paz",por conocer cómo se están trabajando los diversos elementos del currículo en la escuela y específicamente el libro de texto, que es un medio de aprendizaje muy utilizado en la escuela y que, además de transmitir innumerable información al alumno, transmite a través de sus contenidos, ilustraciones y metodología una serie de valores,modelos, conductas, etc. que contribuyen a formar al alumno dentro de una determinada concepción del hombre y del mundo.

  15. Centro médico de rehabilitación, en Viena – Austria

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    Piechl, G.

    1971-03-01

    Full Text Available This medical building, which is new in its type in Austria, is at Meidling, close to the largest hospital devoted to accidents in Austria. It is star shaped, in horizontal platform, with three branches, and has three floor levels. It can houses 50 patients. Construction is concrete cast in situ and precast units. External windows are aluminium framed, and all the fittings are of very high quality.Este edificio sanitario —nuevo en su género en Austria— está situado en Meidling, próximo al mayor centro médico para accidentes de trabajo del país. Tiene planta en estrella con tres brazos y tres plantas de altura, y capacidad para 50 pacientes. La construcción es mixta: hormigón vertido in situ y elementos prefabricados; carpintería exterior de aluminio y dotación de gran lujo de instalaciones.

  16. O papel da arte nos centros de atenção psicossocial - CAPS

    Directory of Open Access Journals (Sweden)

    Claudia Mara de Melo Tavares

    2003-02-01

    Full Text Available Estudo sobre o uso da abordagem artística nos cuidados desenvolvidos nos Centros de Atenção Psicossocial (CAPS. Fundamentado em bases conceituais da Reforma Psiquiátrica, o objeto de estudo foi abordado por meio de uma pesquisa exploratória de campo, através da entrevista com profissionais dos CAPS. Os resultados encontrados indicam que atividades de base artística são utilizadas visando a uma interação positiva com o usuário do serviço na perspectiva de sua reabilitação psicossocial. Concluímos que o trabalho no CAPS atualiza a potencialidade criativa dos profissionais e usuários, sendo a arte tomada como uma estratégia de cuidar.

  17. La Escuela saludable, la Transversalidad y los centros escolares promotores de salud

    OpenAIRE

    Gavidia Catalán, Valentín; Rodes Sala, María José

    1998-01-01

    El presente artículo muestra la evolución de la escuela en su contribución a la Educación para la Salud de niños y jóvenes. De una primera concepción tradicional, se pasa a enfocar la EpS con una perspectiva holística de la salud que engloba las dimensiones física, psicológica y social. Bajo estos principios se definen las características de «la escuela saludable». La necesidad de abordar el concepto de «transversal» ofrece a los centros escolares, la posibilidad de desarrollar un gradiente d...

  18. Los horticultores de la Sabana Centro de Cundinamarca no tienen una organización moderna

    Directory of Open Access Journals (Sweden)

    Alberto Villate París

    2006-07-01

    Full Text Available ¿Cómo hacer para que un grupo de cultivadores de hortalizas cambien de una estructura de subsistencia a organización. ¿En forma de conglomerado como una red de productores que garantice una oferta de calidad nacional e internacional? En este artículo se resume la metodología aplicada y los principales resultados obtenidos, gracias a la aplicación de herramientas de prospectiva, así como análisis de modelos de redes económicas, teorías de dinámica empresarial, estudio de variables de entorno nacional y de tendencias internacionales sobre los productos hortícolas y en una región seleccionada como fueron los municipios de la provincia de Sabana Centro en Cundinamarca.

  19. Importancia de la actividad formativa del docente en centros de Educación Especial

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    Mª del Carmen Pegalajar Palomino

    2014-01-01

    Full Text Available Este artículo describe una investigación que analiza la formación y el desarrollo profesional del docente en centros específicos de Educación Especial de Andalucía. Para ello, se ha utilizado un diseño descriptivo (n=428, llevándose a cabo la recogida de datos mediante un cuestionario semiestructurado. Los resultados demuestran, entre otros aspectos, la insatisfacción de los docentes en cuanto a la formación inicial recibida así como la utilidad de los conocimientos adquiridos en las actividades prácticas realizadas. De igual modo, se ha comprobado cómo las actividades de formación permanente contribuyen al perfeccionamiento de la enseñanza y desarrollo profesional del docente durante su fase de actividad laboral.

  20. Tendencias de infecciones intrahospitalarias en un centro oncológico, 1986-1996

    Directory of Open Access Journals (Sweden)

    Volkow Patricia

    2000-01-01

    Full Text Available OBJETIVO: Describir los resultados de diez años de vigilancia de infecciones intrahospitalarias (II en un centro oncológico. MATERIAL Y MÉTODOS: Es un estudio descriptivo, retrospectivo, del programa de vigilancia del Comité de Vigilancia y Control de Infecciones Intrahospitalarias del Instituto Nacional de Cancerología, realizado en 1997. Se utilizaron los criterios de infección intrahospitalaria por sitio propuestos por el Centro para la Prevención y el Control de Enfermedades de Atlanta, Georgia, de Estados Unidos de América, en 1972. De junio de 1986 a diciembre de 1996, se estudiaron 62 733 egresos. La vigilancia se realizó mediante la revisión de los expedientes de pacientes con fiebre, de aquellos que reciben antibióticos y de posoperados en los pisos de hospitalización y revisión de cultivos. Se calcularon las tasas de II por episodios/100 egresos. RESULTADOS: La tasa de infecciones intrahospitalarias por 100 egresos fue de 4.4 en 1986; 7.7, en 1987; 8.1, en 1988; 5.9, en 1989; 4.6, en 1990; 5.1, en 1991; 4.3, en 1992; 5.4, en 1993; 7.6, en 1994; 7.1, en 1995, y 8.5, en 1996. El germen más frecuentemente aislado en las II fue Escherichia coli. Los aislamientos de hongos y los de enterococo se incrementaron en casi siete veces desde 1987. CONCLUSIONES: Se observó un incremento en la tasa de infecciones hospitalarias en los últimos cuatro años. Al menos dos factores contribuyeron a esta tendencia: la aplicación de un sistema de vigilancia más experimentado, el cual hizo que disminuyera el subregistro, y el aumento real en la frecuencia de tales infecciones.

  1. Centro de investigaciones agrícolas en Saint-Aubin - Fribourg – Suiza

    Directory of Open Access Journals (Sweden)

    Zweifel, J.

    1974-03-01

    Full Text Available This Centre is made up of different installations, such as: management building, plant protection station, research centre, veterinary station, fodder centre and auxiliary exploitation, farm area, insulation station, entrance and dwellings, mill, slaughterhouse, etc. All the buildings, except the fodder tower, have only one floor —of differing heights— so that all communications are horizontal. The prefabricated reinforced concrete pillars rest on pile foundations and act as a support for the roof parts, which are U-shaped, and achieve cenital lighting and the due stability, as well as providing a characteristic physionomy and distinctive appearance of the whole.Este complejo está constituido por diversas instalaciones, tales como: edificio de administración, estación de protección de plantas, centro de investigación, estación veterinaria, centro de forrajes y explotación auxiliar, zona agrícola, estación de aislamiento, entrada y viviendas, molino, matadero, etcétera. Todos los edificios, salvo la torre de forraje, tienen una sola planta —de diferentes alturas—, a fin de que todas las comunicaciones sean horizontales. Los pilares prefabricados de hormigón armado se apoyan sobre cimentación de pilotes y sirven de soporte a las piezas de cubierta, en forma de U, que procuran iluminación cenital y la debida estabilidad, además de ofrecer una fisonomía característica y distintiva al conjunto.

  2. Centro de reuniones y exposiciones - Los Ángeles (EE. UU.

    Directory of Open Access Journals (Sweden)

    Charles Luckman, Asociados

    1972-04-01

    Full Text Available Its users, meeting-goers, exhibitors and visitors, find in it —with its well-studied traffic adequately equipped with signals— a basic centre for activities and a stimulus within the commercial life of the city. As well as the main hall which can accommodate 15,000 people, or for banquets, 8,000 seated at tables, there is a smaller hall, 2,232 sq. metres in size, which can also be used for exhibitions, meetings and banquets. The administration and exhibitors' offices, control room, radio, television and press rooms are on the mezzanine floor. This centre has an air about it of humanity, energy and comfort, within an elegant framework.Sus usuarios: asambleístas, expositores y visitantes, encuentran en él (con circulaciones bien estudiadas y adecuadamente señalizadas un Centro básico de actividades y un estímulo dentro de la vida comercial de la ciudad. Además de la sala principal de exposiciones, en la cual se pueden congregar 15.000 personas o celebrar banquetes para 8.000 comensales, hay otra más pequeña, de 2.232 m2, que se puede utilizar asimismo para exposiciones, reuniones y banquetes. Las oficinas de la administración, de los expositores, sala de control, salas para los medios informativos de prensa, radio y TV., están situadas en el entresuelo. Se respira en este Centro un clima humano, activo y agradable, dentro de un marco elegante.

  3. Programa Centros Diurnos del Adulto Mayor: recomendaciones para mejorar su funcionamiento

    Directory of Open Access Journals (Sweden)

    Alejandra-Ximena Araya

    Full Text Available Resumen: Introducción: Chile se ha transformado en un país que continuará envejeciendo a un ritmo acelerado. Una de las piezas claves de la Política Integral de Envejecimiento Positivo para Chile es el desarrollo de centros de día para personas mayores (CDPM dirigidos al cuidado de ancianos con dependencia leve. Objetivo: Conocer la percepción que tiene un grupo de personas mayores, sus cuidadores y profesionales de su participación en un CDPM con el propósito de diseñar recomendaciones para mejorar este nuevo tipo de servicio geriátrico instaurado en el país. Metodología: Estudio descriptivo cualitativo realizado con 30 participantes a través de cuatro grupos focales: dos en personas mayores (n = 12, uno con cuidadores (n = 8 y uno con profesionales del centro (n = 10. El análisis de contenido se realizó según Kripperdorff y se cumplieron los criterios de rigor según Guba y Lincoln. Resultados: Se identificaron dos categorías comprensivas principales: 1 percepción de beneficios para las personas mayores: mejoría de la funcionalidad, aumento del bienestar y mayor inserción social y 2 recomendaciones de mejora del CDPM: criterios de ingreso inclusivo, flexibilidad y diversidad en actividades estipuladas y mejoras en el egreso. Conclusiones: Las personas mayores, sus cuidadores y los profesionales que los atienden coinciden en señalar que la asistencia de las personas mayores a este tipo de servicio les reporta beneficios en su funcionalidad, bienestar e inserción social. Este estudio contribuye a ampliar el entendimiento de los resultados en los usuarios de los CDPM, reportando una experiencia en un contexto social particular.

  4. Indicadores de calidad para los centros escolares promotores de actividad física y deportiva

    Directory of Open Access Journals (Sweden)

    Teresa Lleixà Arribas

    2015-06-01

    Full Text Available El presente estudio tiene como objetivo identificar una serie de indicadores adecuados para la evaluación de los centros escolares en relación con la actividad física y deportiva, a partir de un listado de aspectos que, en opinión de expertos en actividad física y deportiva escolar, determinan la calidad de los centros escolares con relación a este tema. Los instrumentos utilizados han sido entrevistas semiestructuradas a 3 expertos, de reconocido prestigio y experiencia contrastada en el ámbito, y un cuestionario de escala de valoración, aplicado a 15 responsables y 22 técnicos de deporte escolar de diferentes comunidades autónomas. Los resultados muestran un listado de 64 indicadores de los cuales se han priorizado 19, prevaleciendo los valores obtenidos en el cuestionario en dicha priorización. Entre los indicadores más destacados se señalan: “Descripción de la práctica de la actividad física como educativa y saludable en el PEC”; “Existencia de la figura y funciones de la coordinación”; “Porcentaje de técnicos con formación específica”; “Variedad de actividades física/deportivas más allá de las realizadas en las clases de educación física”. Los indicadores seleccionados pueden aplicarse a herramientas de autoevaluación o de evaluación externa.

  5. Nuevo centro olímpico en Lake Placid, EE.UU

    Directory of Open Access Journals (Sweden)

    Hellmuth, George

    1980-09-01

    Full Text Available This new sports center, site of the 1980 Winter Olympic Games, consists of a main ice rink of Olympic size with seating for 8000 spectators, in addition to a smaller rink used for the U.S. Games. The auxiliary services are found under the stands or in the structure which joins the new center to the rink used for the 1932 Games. The complex is completed with a Higher School and an oval rink for speed skating. With the combination of visible beams in white, seats in bright red, dark blue ceilings, outside stairways enclosed in glass and outside walls with white insulating panels, a pleasant overall effect is achieved both on the outside as well as inside.

    Este nuevo centro deportivo, sede de los Juegos Olímpicos de Invierno de 1980, consta de una pista principal de hielo de dimensiones olímpicas con unos graderíos para 8.000 personas, y de una pista más pequeña utilizada para los Juegos U.S.A. Los servicios auxiliares se encuentran debajo de las gradas o en la estructura que enlaza el nuevo Centro con la pista ya empleada en los anteriores Juegos de 1932. Completa el complejo una Escuela Superior y una pista de forma oval para patinaje de velocidad. Con la combinación de vigas al descubierto en color blanco, asientos en color rojo brillante, techos en color azul oscuro, escaleras exteriores rodeadas de cristal y muros exteriores con paneles aislantes en color blanco se obtiene un agradable conjunto tanto en el aspecto exterior como en el interior.

  6. Situación de salud de reclusos de un centro de cumplimiento penitenciario, Chile

    Directory of Open Access Journals (Sweden)

    C. Osses-Paredes

    2013-02-01

    Full Text Available Introducción: La población penitenciaria ha ido en aumento, y con ello las necesidades en salud, siendo catalogada como una población vulnerable. Por otro lado, las personas privadas de libertad mantienen los derechos inherentes al ser humano, entre ellos el derecho a la salud, el cual en algunas oportunidades se encuentra relegado. Objetivo: Caracterizar la situación de salud de reclusos de un centro de cumplimiento penitenciario, y su grado de satisfacción con la atención en salud brindada. Material y métodos: Estudio descriptivo de corte transversal, llevado a cabo en el centro de cumplimiento penitenciario El Manzano, Concepción, durante octubre 2011-febrero 2012 mediante la aplicación del Examen de medicina preventiva y un cuestionario de antecedentes sociodemográficos y de salud, incluyendo reclusos de sexo masculino y femenino mayores de 18 años en régimen cerrado. Resultados: Un 85% de la población estudiada eran hombres, la edad promedio fue 34 años, el 91,2% recibe visitas, el promedio de reclusión fue 38 meses. El 45% posee al menos una enfermedad diagnosticada, primando los desórdenes mentales, patologías del sistema respiratorio y circulatorio. Un 56% de los reclusos ha solicitado atención en salud con poca frecuencia, encontrándose 33% muy satisfecho y 32% satisfecho en lo relativo a los servicios sanitarios del penal. Discusión: El estado de salud de la población penal se encuentra más deteriorado que el de la población general, con necesidades mayores y distintas, sin embargo existe una percepción de un buen estado de salud y una tendencia al alto grado de satisfacción de los servicios sanitarios.

  7. Diversidad de aves en el Centro Agropecuario Cotové, Santa Fe de Antioquia, Colombia

    Directory of Open Access Journals (Sweden)

    Caty Milena Martínez-Bravo

    2013-12-01

    Full Text Available En el Centro Agropecuario Cotové, en el municipio de Santa Fe de Antioquia (Colombia, se estudió la diversidad de aves utilizando las metodologías de puntos fijos de conteo y redes de niebla en cinco usos del suelo (Frutales, Sistema silvopastoril, Bosque secundario, Pastoreo con baja densidad de árboles y Pastos de corte, para analizar la influencia sobre la composición, riqueza y abundancia de la avifauna. Se registraron 6 633 individuos de 101 especies, de las cuales 11 especies son migratorias. En términos de abundancia, la mayoría de las especies fueron raras y pocas comunes. Los gremios alimenticios mejor representados fueron insectívoros y frugívoros. El índice de Shannon indica que el Sistema silvopastoril presenta los valores de diversidad alfa más altos y los frutales los más bajos. Los usos del suelo que compartieron más especies fueron sistema Silvopastoril y Pastoreo con baja densidad de árboles. La heterogeneidad ambiental del centro actúa de forma diferente para las especies, beneficia en su mayoría aves de baja y media especificidad de hábitat, y con preferencia de hábitats de borde y áreas abiertas, por lo que se deben implementar acciones de manejo dirigidas a la conservación de áreas de regeneración natural y conectividad entre usos del suelo, para que las poblaciones de especies de aves presentes en la zona puedan ser mantenidas en el tiempo.

  8. Contribuciones para el desarrollo de programas para talentosos dentro del centro educativo

    Directory of Open Access Journals (Sweden)

    Sheyla Blumen de Pardo

    2013-09-01

    Full Text Available Un gran número de alumnos en nuestros centros educativos posee habilidades de aprendizaje extraordinarias y talentos especiales en tal grado que sus necesidades educativas no logran ser totalmente cubiertas en los programas escolares regulares. Los programas educativos para niños talentosos son una parte lógica y esencial de cualquier programa escolar que reconozca y respete las diferencias individuales entre sus alumnos. La filosofía que guía esta propuesta se basa en que: (1 el niño es un ser humano único que posee habilidades y necesidades educativas individualizadas y (2 es responsabilidad de nuestros centros educativos primero identificar estas necesidades y habilidades y luego proveer el tipo de experiencias educativas que tiendan a satisfacer las necesidades individuales y desarrollar las habilidades de cada niño al máximo de sus potencialidades. A number of students in our schools possess learning abilities and specialized talents to such degree that their educational needs cannot be met in a regular school program. Special educational programs for the gifted and talented are an essential part of any school program which recognizes and respects individual differences among its pupils. The philosophy which guides our proposal is based on the belief that: (1 each child is a unique human being who possesses individual educational needs and abilities; and (2 it is the responsibility of our schools, first to identify those needs and abilities and then, to provide the educational experiences for meeting individual needs and developing each child's abilities to the fullest degree.

  9. Seed size, shape and vertical distribution in the soil : indicators of seed longevity

    NARCIS (Netherlands)

    Bekker, RM; Bakker, JP; Grandin, U; Kalamees, R; Milberg, P; Poschlod, P; Thompson, K; Willems, JH

    1998-01-01

    1. We investigated the vertical distribution of seeds in the soil, using data from nine studies in five European countries. We discovered significant correlations between seed shape and distribution in the soil. 2. The classification of the longevity of seeds of plant species has been improved by

  10. Proanthocyanidins in seed coat tegmen and endospermic cap inhibit seed germination in Sapium sebiferum.

    Science.gov (United States)

    Shah, Faheem Afzal; Ni, Jun; Chen, Jing; Wang, Qiaojian; Liu, Wenbo; Chen, Xue; Tang, Caiguo; Fu, Songling; Wu, Lifang

    2018-01-01

    Sapium sebiferum , an ornamental and bio-energetic plant, is propagated by seed. Its seed coat contains germination inhibitors and takes a long time to stratify for germination. In this study, we discovered that the S. sebiferum seed coat (especially the tegmen) and endospermic cap (ESC) contained high levels of proanthocyanidins (PAs). Seed coat and ESC removal induced seed germination, whereas exogenous application with seed coat extract (SCE) or PAs significantly inhibited this process, suggesting that PAs in the seed coat played a major role in regulating seed germination in S. sebiferum . We further investigated how SCE affected the expression of the seed-germination-related genes. The results showed that treatment with SCE upregulated the transcription level of the dormancy-related gene, gibberellins (GAs) suppressing genes, abscisic acid (ABA) biosynthesis and signalling genes. SCE decreased the transcript levels of ABA catabolic genes, GAs biosynthesis genes, reactive oxygen species genes and nitrates-signalling genes. Exogenous application of nordihydroguaiaretic acid, gibberellic acid, hydrogen peroxide and potassium nitrate recovered seed germination in seed-coat-extract supplemented medium. In this study, we highlighted the role of PAs, and their interactions with the other germination regulators, in the regulation of seed dormancy in S. sebiferum .

  11. Supplementing seed banks to rehabilitate disturbed Mojave Desert shrublands: where do all the seeds go?

    Science.gov (United States)

    DeFalco, Lesley A.; Esque, Todd C.; Nicklas, Melissa B.; Kane, Jeffrey M.

    2012-01-01

    Revegetation of degraded arid lands often involves supplementing impoverished seed banks and improving the seedbed, yet these approaches frequently fail. To understand these failures, we tracked the fates of seeds for six shrub species that were broadcast across two contrasting surface disturbances common to the Mojave Desert—sites compacted by concentrated vehicle use and trenched sites where topsoil and subsurface soils were mixed. We evaluated seedbed treatments that enhance soil-seed contact (tackifier) and create surface roughness while reducing soil bulk density (harrowing). We also explored whether seed harvesting by granivores and seedling suppression by non-native annuals influence the success of broadcast seeding in revegetating degraded shrublands. Ten weeks after treatments, seeds readily moved off of experimental plots in untreated compacted sites, but seed movements were reduced 32% by tackifier and 55% through harrowing. Harrowing promoted seedling emergence in compacted sites, particularly for the early-colonizing species Encelia farinosa, but tackifier was largely ineffective. The inherent surface roughness of trenched sites retained three times the number of seeds than compacted sites, but soil mixing during trench development likely altered the suitability of the seedbed thus resulting in poor seedling emergence. Non-native annuals had little influence on seed fates during our study. In contrast, the prevalence of harvester ants increased seed removal on compacted sites, whereas rodent activity influenced removal on trenched sites. Future success of broadcast seeding in arid lands depends on evaluating disturbance characteristics prior to seeding and selecting appropriate species and seasons for application.

  12. Evaluation of non-chemical seed treatment methods for control of Alternaria brassicicola on cabbage seeds

    NARCIS (Netherlands)

    Amein, T.; Wright, Al S.; Wikstrom, M.; Koch, E.; Schmitt, A.; Stephan, D.; Jahn, M.; Tinivella, F.; Gullino, M.L.; Forsberg, G.; Werner, S.; Wolf, van der J.M.; Groot, S.P.C.

    2011-01-01

    Due to the lack of foliar fungicide use, the organic production of Brassica seeds free of Alternaria spp. is difficult. Therefore, effective seed treatments certified for use in organic farming are needed to eradicate or at least effec­tively reduce the seed-borne inoculum. We here report results of

  13. Bulk YBCO seeded with 45°–45° bridge-seeds of different lengths

    International Nuclear Information System (INIS)

    Shi, Y-H; Durrell, J H; Dennis, A R; Cardwell, D A

    2013-01-01

    Single grain, (RE)BCO (rare earth–barium–copper oxide) bulk superconductors in large or complicated geometries are required for a variety of potential applications, such as in motors and generators and magnetic shielding devices. As a result, top, multi-seeded, melt growth has been investigated over the past 15 years in an attempt to enlarge the size of (RE)BCO single grains specifically for such applications. Of these multi-seeding techniques, so-called bridge-seeding provides the best alignment of two seeds in a single grain growth process. Here we report, for the first time, the successful growth of YBCO (yttrium–barium–copper oxide) using a special, 45°–45°, arrangement of bridge-seeds. The superconducting properties, including trapped field, of the multi-seeded YBCO grains have been measured for different bridge lengths of the 45°–45° bridge-seeds. The boundaries at the impinging growth front and the growth features of the top, multi-seeded surface and cross-section of the multi-seeded, samples have been analysed using optical microscopy. The results suggest that an impurity-free boundary between the two seeds of each leg of the bridge-seed can form when 45°–45° bridge-seeds are used to enlarge the size of YBCO grains. (paper)

  14. Estimating Cone and Seed Production and Monitoring Pest Damage in Southern Pine Seed Orchards

    Science.gov (United States)

    Carl W. Fatzinger; H. David Muse; Thomas Miller; Helen T. Bhattacharyya

    1988-01-01

    Field sampling procedures and computer programs are described for monitoring seed production and pest damage in southern pine seed orchards. The system estimates total orchard yields of female strobili and seeds, quantifies pest damage, determines times of year when losses occur, and produces life tables for female strobili. An example is included to illustrate the...

  15. Farmers' seed sources and seed quality: 1. Physical and physiological quality

    NARCIS (Netherlands)

    Bishaw, Z.; Struik, P.C.; Gastel, van A.J.G.

    2012-01-01

    Understanding farmers' seed quality problem will enable farmers to devise strategies to improve quality at the farm level. The study was conducted to assess the quality of seed used by farmers from different sources and regions. A total of 304 wheat (Trticium aestivum L. and T. durum L.) seed

  16. Proanthocyanidins in seed coat tegmen and endospermic cap inhibit seed germination in Sapium sebiferum

    Directory of Open Access Journals (Sweden)

    Faheem Afzal Shah

    2018-04-01

    Full Text Available Sapium sebiferum, an ornamental and bio-energetic plant, is propagated by seed. Its seed coat contains germination inhibitors and takes a long time to stratify for germination. In this study, we discovered that the S. sebiferum seed coat (especially the tegmen and endospermic cap (ESC contained high levels of proanthocyanidins (PAs. Seed coat and ESC removal induced seed germination, whereas exogenous application with seed coat extract (SCE or PAs significantly inhibited this process, suggesting that PAs in the seed coat played a major role in regulating seed germination in S. sebiferum. We further investigated how SCE affected the expression of the seed-germination-related genes. The results showed that treatment with SCE upregulated the transcription level of the dormancy-related gene, gibberellins (GAs suppressing genes, abscisic acid (ABA biosynthesis and signalling genes. SCE decreased the transcript levels of ABA catabolic genes, GAs biosynthesis genes, reactive oxygen species genes and nitrates-signalling genes. Exogenous application of nordihydroguaiaretic acid, gibberellic acid, hydrogen peroxide and potassium nitrate recovered seed germination in seed-coat-extract supplemented medium. In this study, we highlighted the role of PAs, and their interactions with the other germination regulators, in the regulation of seed dormancy in S. sebiferum.

  17. Incorporating seeds in activated carbon pellets limits herbicide effects to seeded bunchgrasses when controlling exotic annuals

    Science.gov (United States)

    Revegetation of exotic annual grass-invaded rangeland with pre-emergent herbicides is challenging because seeding is delayed until herbicide toxicity has diminished, but at this time, exotic annuals can be re-invading. Incorporating seeds into activated carbon pellets may allow seeding to occur at t...

  18. In vitro Seed-dressing Technique for the Control of Seed-borne ...

    African Journals Online (AJOL)

    In vitro Seed-dressing Technique for the Control of Seed-borne Fungi of Rice variety Faro -29. ... Journal of Applied Sciences and Environmental Management ... Fernasan-D, Apron Plus 50 DS and Dithane–M45), and soaking and slurry methods at various concentrations, for the control of seed-borne fungi of rice variety

  19. Local Seed Business in the Context of Integrated Seed Sector Development

    NARCIS (Netherlands)

    Thijssen, M.H.; Borman, G.D.; Verhoosel, K.S.; Mastenbroek, A.; Heemskerk, Willem

    2015-01-01

    Quality seed is a key input for agriculture, with a direct impact on agricultural production and productivity. Integrated seed sector development (ISSD) is an inclusive approach that recognizes and builds upon a diversity of seed systems in the sector. We use the ISSD approach to guide us in the

  20. ESTIMATION OF EFFICIENCY OF MACHINERY FOR PRE-SOWING TREATMENT OF RADISH SEEDS FOR SEED PRODUCTION

    Directory of Open Access Journals (Sweden)

    S. M. Sirota

    2016-01-01

    Full Text Available The results of pre-sowing treatment of radish seeds aimed at increasing of seed production, yield and its productivity in protected area are presented. The density fractionation of radish seeds by gravity separator is recommended for improvement of planting material quality and increasing of utilization efficiency of frame area.