WorldWideScience

Sample records for amazonicus characidae na

  1. Dinâmica populacional da matrinxã Brycon amazonicus (Characidae na Amazônia Central Population dynamics of matrinxã Brycon amazonicus (Characidae in Central Amazon

    Directory of Open Access Journals (Sweden)

    Leocy C. dos Santos Filho

    2009-06-01

    Full Text Available The matrinxã, Brycon amazonicus (Spix & Agassiz, 1829 is one of the most important fishery resources of the Amazonas state. Its population dynamics in Central Amazon was analyzed based on total landing and biometry data registered in the main landing port of Manaus, between 1994 and 2002. Growth and mortality rates were estimated separately for the rivers Purus, Madeira and Solimões. Differences in size structure and growth curves suggest that different population units exist among these rivers, requiring individualized evaluation and fisheries management strategies. The analysis of the yield per recruit does not indicate overexploitation. However, the highest relative exploitation rate was observed in the Madeira river. The suggested management strategies are related to restrictions to the fishery in the main fishing grounds during the migratory dispersal period, instead of restrictions during reproductive periods.

  2. Cytogenetic characterization of Brycon amazonicus (Spix et Agassiz, 1829) (Teleostei: Characidae) from Caicara del Orinoco, Venezuela

    OpenAIRE

    Mariguela,T; Nirchio, M.; E Ron; Gaviria, J.; Fausto Foresti; Claudio Oliveira

    2010-01-01

    A cytogenetic analysis by conventional Giemsa staining, silver staining, C-banding, and fluorescence in situ hybridization (FISH) was carried out on Brycon amazonicus from Caicara del Orinoco, Venezuela. The karyotype of this species is characterized by the presence of 2n = 50 chromosomes, a karyotypic formula 22m+14sm+14st, and a fundamental number of 100 chromosomal arms. Nucleolar organizer regions (NORs) and 18S rDNA genes are located in the terminal regions of the long arms of the s...

  3. VALORES MORFOMÉTRICOS EN LARVAS DE YAMÚ BRYCON AMAZONICUS (PISCES: CHARACIDAE OBTENIDAS CON SEMEN FRESCO Y CRIOCONSERVADO MORFOMETRIC VALUES IN YAMÚ BRYCON AMAZONICUS (PISCES: CHARACIDAE LARVAE OBTAINED FROM FRESH AND CRIOPRESERVED SPERM

    Directory of Open Access Journals (Sweden)

    Tatiana M. Mira-López

    2007-12-01

    Full Text Available Con el propósito de evaluar diferencias en el desarrollo corporal, el crecimiento y la sobrevivencia de larvas de yamú (Brycon amazonicus obtenidas a partir de la fertilización de oocitos con semen fresco (SF y semen crioconservado (SC, machos y hembras de la especie fueron inducidos hormonalmente con extracto de hipófisis de carpa. El semen obtenido fue evaluado y diluido en una solución de yema de huevo, glucosa y dimetilsulfoxido y congelado en vapores de nitrógeno. Las larvas fueron obtenidas de la seminación en seco de oocitos obtenidos de una misma hembra, con semen fresco o crioconservado y evaluadas desde la eclosión (0 horas hasta 60 horas posteclosión (HPE. Se determinó la longitud total (LT, longitud notocordal (LN, el volumen del saco vitelino (VSV y la sobrevivencia desde 35 HPE hasta 60 HPE. Para LT sólo hubo diferencias significativas (p In order to evaluate the differences in the corporal growth, development and survival of yamú (Brycon amazonicus, larvae obtained from eggs fertilized with fresh (FS and cryopreserved (CS sperm were used. Males and females of yamú were hormonally stimulated with carp pituitary extract. The sperm obtained was evaluated and diluted in an egg yolk, glucose and dimethylsulfoxide solution and frozen in nitrogen vapours. Eggs from the same female were seminated in dry with fresh and cyopreserved sperm and the larvae obtained were evaluated from the hatching (0 hours until 60 hours post-hatching (HPH. In each larva, the total length (TL, notocordal length (NL, yolk sac volume (YSV and larvae survival from 35 to 60 HPH were determined. Significant differences in the TL were observed only at 42 and 54 HPH being the larvae from the CS the longest (6.5 ± 0.04 and 6.8 ± 0.04 mm, respectively. In terms of NL, the higher lengths were observed at 0, 3 and 54 HPH; larvae from FS was longer at 0 HPH (3.3 ± 0.02 mm and larvae from CS were longer at 3 and 54 HPH (4.1 ± 0.05 and 6.6 ± 0.04 mm

  4. Comparative study on hematological parameters of farmed matrinxã, Brycon amazonicus Spix and Agassiz, 1829 (Characidae: Bryconinae with others Bryconinae species Estudo comparativo sobre parâmetros hematológicos de matrinxã Brycon amazonicus Spix e Agassiz, 1892(Characidae: Bryconinae criados em cativeiro, com outras espécies de Bryconinae

    Directory of Open Access Journals (Sweden)

    Marcos Tavares-Dias

    2008-12-01

    Full Text Available The aim of this study was not only to determine the red blood cells parameters, thrombocyte and leukocyte counts in farmed Brycon amazonicus (matrinxã, to compare these parameters among Bryconinae species from literature, and also to investigate the presence of special granulocytic cells in these fish. The results of the blood cells parameters here established for farmed B. amazonicus, a species of great economic importance in Brazilian aquaculture, could help a better understanding of the blood features in natural populations of this Amazon species. Blood parameters varied between Bryconinae species investigated, mainly the red blood cell counts, hemoglobin, hematocrit and mean corpuscular volume (MCV. The presence of the blood granulocytes, neutrophils and heterophils in matrinxã suggest that both leukocytes can be a characteristic for Bryconinae family. Furthermore, it indicates that the existence of special granulocytic cells in the blood of Bryconinae species from literature is an artifact, and this was herein discussed.O objetivo deste estudo foi determinar os parâmetros eritrocíticos, as contagens de trombócitos e de leucócitos de espécimes de Brycon amazonicus (matrinxã, criados em cativeiro e compará-los com aqueles descritos na literatura para outras espécies de Bryconinae. Além disso, foi ainda investigada a presença de células granulocíticas especiais nestes peixes. Os resultados dos parâmetros sangüíneos apresentados para B. amazonicus podem ajudar a entender melhor as características sangüíneas em população natural desta espécie de grande importância para a aqüicultura brasileira. Os parâmetros sangüíneos das espécies de Bryconinae investigadas apresentaram variação interespecíficas principalmente a contagem de eritrócitos, hemoglobina, hematócrito e volume corpuscular médio (VCM. A presença dos granulócitos sangüíneos, neutrófilos e heterófilos em matrinxã sugere que esta pode ser uma

  5. Screening and characterization of sex-specific DNA fragments in the freshwater fish matrinchã, Brycon amazonicus (Teleostei: Characiformes: Characidae).

    Science.gov (United States)

    da Silva, Eder Marques; Wong, Marina Sek Lien; Martins, Cesar; Wasko, Adriane Pinto

    2012-10-01

    The matrinchã Brycon amazonicus, a commercially important freshwater fish resource, has no heteromorphic sex chromosomes so far described. In the present study, we performed a screening of sex-associated DNA markers in this species, through the use of a random amplified polymorphic DNA (RAPD) assay and a genomic DNA restriction digestion analysis. DNA digestions evidenced no differences between sexes. Sixty-six random primers were used in pooled and individual DNA samples of males and females, and the analysis of the RAPD fingerprints revealed one female sex-associated band. Cloning and sequencing of this band led to the identification of two distinct DNA segments. While one of the isolated fragments showed a significant identity with a described protein gene (phosphatidylinositol glycan anchor biosynthesis, class W), the other fragment, composed of 535 bp, corresponds to a novel DNA marker. Further experiments were performed with this second DNA fragment in order to verify its sex-specificity. Data on dot blot hybridization, using total DNA of both sexes, confirmed its female-specificity in B. amazonicus. A primer set was designed based on its sequence data and used in PCR with DNA samples of this species, leading to diagnose the animals' sexes with a 100 % overall accuracy through a sequence characterized amplified region approach. No amplification results were found for two other species of the genus--B. orbignyanus and B. lundii. The obtained data can lead to the hypothesis that B. amazonicus may present heteromorphic sex chromosomes that should be in an early phase of differentiation. PMID:22527611

  6. The effect of saponins from Ampelozizyphus amazonicus Ducke on the renal Na+ pumps’ activities and urinary excretion of natriuretic peptides

    Directory of Open Access Journals (Sweden)

    Diniz Lúcio Ricardo

    2012-04-01

    Full Text Available Abstract Background In a previous study, we showed that a saponin mixture isolated from the roots of Ampelozizyphus amazonicus Ducke (SAPAaD reduces urine excretion in rats that were given an oral loading of 0.9 % NaCl (4 ml/100 g body weight. In the present study, we investigated whether atrial natriuretic peptides (ANP and renal ATPases play a role in the SAPAaD- induced antidiuresis in rats. Methods To evaluate the effect of SAPAaD on furosemide-induced diuresis, Wistar rats (250-300 g were given an oral loading of physiological solution (0.9 % NaCl, 4 ml/100 g body weight to impose a uniform water and salt state. The solution containing furosemide (Furo, 13 mg/kg was given 30 min after rats were orally treated with 50 mg/kg SAPAaD (SAPAaD + Furo or 0.5 ml of 0.9 % NaCl (NaCl + Furo. In the SAPAaD + NaCl group, rats were pretreated with SAPAaD and 30 min later they received the oral loading of physiological solution. Animals were individually housed in metabolic cages, and urine volume was measured every 30 min throughout the experiment (3 h. To investigate the role of ANP and renal Na+ pumps on antidiuretic effects promoted by SAPAaD, rats were given the physiological solution (as above containing SAPAaD (50 mg/kg. After 90 min, samples of urine and blood from the last 30 min were collected. Kidneys and atria were also removed after previous anesthesia. ANP was measured by radioimmunoassay (RIA and renal cortical activities of Na+- and (Na+,K+-ATPases were calculated from the difference between the [32P] Pi released in the absence and presence of 1 mM furosemide/2 mM ouabain and in the absence and presence of 1 mM ouabain, respectively. Results It was observed that SAPAaD inhibited furosemide-induced diuresis (at 90 min: from 10.0 ± 1.0 mL, NaCl + Furo group, n = 5, to 5.9 ± 1.0 mL, SAPAaD + Furo group n = 5, p +-ATPase (from 25.0 ± 5.9 nmol Pi

  7. Interação do exercício de natação sustentada e da densidade de estocagem no desempenho e na composição corporal de juvenis de matrinxã Brycon amazonicus Sustained swimming and stocking density interaction in the performance and body composition of matrinxã Brycon amazonicus juveniles

    Directory of Open Access Journals (Sweden)

    Gustavo Alberto Arbeláez-Rojas

    2009-02-01

    Full Text Available O objetivo deste estudo foi estimar o efeito da densidade de estocagem associada ao exercício de natação moderada no desempenho e na composição corporal de juvenis de matrinxã (Brycon amazonicus. Foram utilizados peixes com comprimento e peso médio inicial de 12,3±0,5cm e 18,4±0,1g, os quais foram distribuídos ao acaso em dois grupos: o primeiro grupo de peixes foi estocado em três densidades correspondendo a 88, 176 e 353 peixes m-3 e foi condicionado a nadar a uma velocidade de 1,0cc s-1 (comprimento corporal por segundo em tanques circulares de 250L, durante 70 dias. O segundo grupo de peixes foi mantido nas mesmas densidades em água parada (sem exercício perfazendo no total seis tratamentos com três repetições. Foram estimados parâmetros de desempenho e da composição corporal, particularmente do músculo branco e do músculo vermelho de ambos os grupos. Os resultados mostraram que o exercício e a densidade afetaram significativamente o crescimento e a composição dos músculos do matrinxã. O grupo de peixes criados sob exercício moderado na densidade de 176 peixes m-3 apresentou melhor desempenho (PThe aim of the present study was to gauge the effect of stocking density associated to the sustained swimming on the performance and body composition of matrinxã (Brycon amazonicus juveniles. The fish were initially sized at 12.3±0.5cm length and 18.4g±0.1g weight. They were distributed randomly in two groups: the first was arranged into three densities of 88, 176 and 353 fish m-3 and conditioned to swim at 1.0BL sec-1 in circular tanks of 250L for 70 days; the second was arranged in the same fish densities but in static waters performing six treatments with three repetitions. Performance and body compositions were estimated in white and red muscles for both groups. The results express the growth and muscle composition change in response to the exercise and fish density. The fish maintained in moderate swimming at 176

  8. LEVANTAMENTO DE PARASITOS EM INFRAPOPULAÇÃO DE Brycon insignis STEINDACHNER, 1876 (PISCES, CHARACIDAE), CRIADA NA REGIÃO NORTE FLUMINENSE, RIO DE JANEIRO, BRASIL

    OpenAIRE

    Dalton Garcia de Mattos Júnior; Maria Angélica Vieira da Costa Pereira; Guilherme Quintanilha Fernandes; Guilherme Souza

    2006-01-01

    Este trabalho tem como objetivo fazer um levantamento de parasitos na piabanha, um peixe da família Characidae e do gênero Brycon, o mesmo do matrinxã, da piraputanga e de outras sessenta espécies. Nativa do rio Paraíba do Sul, Região Norte Fluminense do Estado do Rio de Janeiro, Brasil, trata-se de espécie ameaçada de extinção. Analisaram-se sessenta espécimes de Brycon insignis Steindachner, 1876, com peso médio de 6,0 a 8,0 kg e comprimento total de 15,0 a 45,0 cm no período compreendido e...

  9. Spatial and seasonal changes in the diet of Oligosarcus hepsetus (Characiformes, Characidae in a Brazilian Reservoir Variações espaciais e sazonais na dieta de Oligosarcus hepsetus (Characiformes, Characidae em um reservatório brasileiro

    Directory of Open Access Journals (Sweden)

    F. G Araújo

    2005-02-01

    Full Text Available We assessed spatial and seasonal changes in the diet of Oligosarcus hepsetus in order to describe the strategy developed by this species that allows their very high abundance in Lajes reservoir, Rio de Janeiro, Brazil. Fish samplings were carried out using gill nets, deployed during ca. 12 and 24 hours, between April 2001 and May 2002. A total of 289 individuals were examined, of which 97 showed gut contents. We used the index of relative importance (IRI to compare probable dietary shifts, and the frequency of occurrence (% OC to analyze possible ontogenetic influences on feeding. O. hepsetus showed carnivorous habits, feeding preferably on fish and insects, the latter of which occurred in 71.0% of the guts presenting contents. O. hepsetus consumed different items along the three reservoir zones: insects (61.0% IRI and Cichla monoculus (38.9% IRI in the lower zone; Lepidoptera (57.0% IRI in the middle zone; and C. monoculus (77.0% IRI in the upper zone. Food items changed seasonally with C. monoculus predominating in autumn 2001, and Hymenoptera and Lepidoptera in the winter. In spring almost all food was Lepidoptera (99.8% IRI, while in the summer Hemiptera dominated in the diet. In autumn 2002 Hemiptera (97.0% IRI was dominant, in significant contrast with the previous autumn. Individuals smaller than 190 mm SL fed heavily on insects, while fishes predominated in the diet of individuals larger than 190 mm SL. Shifts in prey-capture ability among length classes suggest decreasing intraspecific competition. A higher food plasticity seems to be the strategy employed by this opportunist species, which used food resources available in the reservoir.Foram analisadas variações na dieta de O. hepsetus conforme comparações espaciais e sazonais, com o objetivo de descrever a estratégia desenvolvida por essa espécie que permite sua elevada abundância no reservatório de Lajes, Rio de Janeiro, Brasil. As amostras foram coletadas utilizando redes de

  10. Estresse devido ao transporte e à ação da benzocaína em parâmetros hematológicos e população de parasitas em matrinxã, Brycon cephalus (Günther, 1869 (Osteichthyes, Characidae Transport with different benzocaine concentrations and its consequences on hematological parameters and gill parasite population of matrinxã Brycon cephalus (Günther, 1869 (Osteichthyes, Characidae

    Directory of Open Access Journals (Sweden)

    Maurício Laterça Martins

    2002-05-01

    Full Text Available O objetivo deste trabalho foi avaliar os efeitos do transporte, sob diferentes concentrações de benzocaína, em parâmetros hematológicos e na população de parasitas de brânquias do matrinxã Brycon cephalus (Osteichthyes, Characidae. Trinta peixes (peso médio 1,0 kg foram transportados em tambores plásticos de 200 L por quatro horas. Cada tambor foi preparado com uma concentração de benzocaína (B0 = 0 mg/L; B1 = 5 mg/L; B2 = 10 mg/L e B3 = 20 mg/L. Anteriormente ao carregamento dos tambores, cinco peixes foram amostrados para determinar a condição inicial. Outras três amostragens foram feitas posteriormente: na chegada, 24 e 96 horas após o transporte. Os peixes transportados sob efeito da benzocaína apresentaram menor resposta de fuga durante a captura comparado aos peixes do B0, sendo que os peixes do B3 mostraram dificuldade de manter o equilíbrio durante a viagem. Após o transporte, registraram-se os níveis mais elevados de cortisol plasmático, em todos os tratamentos, com retorno aos níveis iniciais após 24 horas. A glicemia elevou-se na chegada, em todos os tratamentos, e após 24 horas apenas os peixes transportados nas duas concentrações mais altas ainda não haviam recuperado os valores iniciais. Na chegada, a porcentagem de linfócitos decresceu, permanecendo neste patamar após 24 horas, sendo que os peixes do B2 e B3 não retornaram à condição inicial até o final do período experimental. Foi observado aumento da porcentagem de neutrófilos, desde a chegada até 24 horas após o transporte, em todos os tratamentos. Os peixes do B2 e B3 mantiveram elevadas as porcentagens de neutrófilos até 96 horas após o transporte. Na última coleta, constatou-se que o número do parasita branquial Piscinoodinium sp. havia aumentado nos peixes do B3. Foi possível observar que o uso da benzocaína contribuiu com a elevação da glicemia e dos níveis plasmáticos do cortisol após o transporte, sendo registrados

  11. INFLUÊNCIA DO TRANSPORTE NA RELAÇÃO PESO-COMPRIMENTO E FATOR DE CONDIÇÃO DE Paracheirodon axelrodi (CHARACIDAE

    Directory of Open Access Journals (Sweden)

    Jefferson Raphael Gonzaga Lemos

    2015-12-01

    Full Text Available Foi comparada a relação peso-comprimento (RPC e fator de condição relativo (Kn de Paracheirodon axelrodi de habitat natural após sua captura e transporte, simulando fielmente algumas etapas do processo de extração de peixes ornamentais amazônicos. Os peixes foram divididos aleatoriamente em dois grupos: habitat natural (pré-transporte e após a captura e transporte (pós-transporte. Em cada grupo foram medidos a massa corporal (Wt e comprimentou total (Lt para determinação da RPC e Kn em diferentes faixas de tamanho.A RPC do grupo pré-transporte foi Wt = 0,014Lt2,528 (r2 = 0,966 e grupo pós-transporte foi Wt = 0,010 Lt2,848 (r2 = 0,956. Ambos os grupos apresentaram alometria negativa e houve diferença entre o valor de b entre grupos estudados. As médias do peso real dos peixes e Kn foram menores no grupo pós-transporte. Os resultados demonstram que o pós-transporte é uma etapa crítica na cadeia extrativista de P. axelrodi devido às baixas condições corporais dos peixes indicada pela RPC e Kn. Portanto, indicam a necessidade melhoria das técnicas de manejo na cadeia de extração desse peixe ornamental amazônico. Palavras-chave: Crescimento alométrico, cardinal, peixe ornamental, estresse, transporte. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v5n4p22-26

  12. Embryonic and larval development of Brycon amazonicus (SPIX & AGASSIZ, 1829).

    Science.gov (United States)

    Nakauth, A C S Sampaio; Villacorta-Correa, M A; Figueiredo, M R; Bernardino, G; França, J M

    2016-02-01

    The objective of this study was to describe the embryonic and larval development of Brycon amazonicus, featuring the main events up to 50 hours after fertilization (AF). The material was provided by the Aquaculture Training, Technology and Production Center, Presidente Figueiredo (AM). The characterization was based on stereomicroscopic examination of the morphology of eggs, embryos and larvae and comparison with the literature. Matrinxã eggs are free, transparent, and spherical, with a perivitelline space of 0.56 ± 0.3 mm. The successive divisions give rise to cells with 64 blastomeres during the first hour AF. The gastrula stage, beginning 02 h 40 min AF, was characterized by progressive regression cells and the formation of the embryonic axis, leading to differentiation of the head and tail 05 h 30 min AF. From 06 to 09 h AF the somites, notochord, otic and optic vesicles and otoliths were observed, in addition to heart rate and the release of the tail. The larvae hatched at 10 h 30 min AF (29.9 °C), with a total length of 3.56 ± 0.46 mm. Between 19 and 30 h AF, we observed 1) pigmentation and gut formation, 2) branchial arches, 3) pectoral fins, 4) a mouth opening and 5) teeth. Cannibalism was initiated earlier (34 h AF) which was associated with rapid yolk absorption (more than 90% until 50 h AF), signaling the need for an exogenous nutritional source. The environmental conditions (especially temperature) influenced the time course of some events throughout the embryonic and larval development, suggesting the need for further studies on this subject. PMID:26909629

  13. Biogeochemical behavior of Ampelozizyphus amazonicus Ducke in the Pitinga mining district, Amazon, Brazil

    Science.gov (United States)

    Lima E Cunha, M. C.; Pereira, V. P.; Menegotto, E.; Bastos Neto, A. C.; Oliveira, L. D.; Formoso, M. L. L.

    2008-09-01

    The vegetal species Ampelozizyphus amazonicus Ducke (Rhamnaceae Family) was chosen as a sampling medium for the lateritic surfaces of the Pitinga Mine in the Amazon region, in order to study the biogeochemical behavior of this species and compare it with the chemical composition of a reference plant. The Pitinga mining district is one of the largest producers of tin in the world. This district contains unique deposits of cryolite and rare metals such as Zr, Nb, Ta, Y and REEs related to granitic bodies that intrude into the volcanic and acid pyroclastic rocks. The results showed that the species A. amazonicus predominantly concentrates significant levels of Zr, Nb, Ta, Th, Be, Sc over U, Hf, Ga and In. These elements are characteristic of the mineral paragenesis for the region, suggesting that this plant can provide a representative sampling medium future geochemical exploration programs in the region.

  14. 1-D and 2-D electrophoresis protein profiles of the scorpion venom from Brotheas amazonicus

    Energy Technology Data Exchange (ETDEWEB)

    Higa, A.M.; Noronha, M.D.N. [Universidade do Estado do Amazonas (UEA), Manaus, AM (Brazil). Rede Proteomica do Amazonas (Proteam). Lab. de Genomica e Proteomica; Rocha-Oliveira, F.; Lopez-Lozano, J.L.L. [Universidade Federal do Amazonas (UFAM), Manaus, AM (Brazil). Pos-Graduacao em Biotecnologia

    2008-07-01

    Full text: Introduction: Scorpions venoms show specific neurotoxins to insect or mammals. These toxins are very important molecular tools to development of news drugs or bioinsecticides. Brotheas amazonicus scorpion is an endemic specie in Amazonian Rain Forest, but your venom do not show toxicity in humans. Information about biological specific activity on insect of this venom is not known yet. Objectives: Molecular protein toxins profiles of the venom from Brotheas amazonicus scorpion by 1-D and 2-D electrophoresis methods to detected toxins with potential biotech applications. Results: Several spots 'families' with {approx} 60, 70 and 80 kDa were detected in gel acidic region with pI {approx} 4,5 - 6 range, in the same region 1-D zimography showed proteolytic activity on gelatin and fibrinogen and proteolytic activity was inhibited by PMSF, suggesting scorpion serine proteinases. 50 kDa proteins were detected with pI {approx} 6,5 - 7 range. In 23 - 50 kDa gel acid region were observed some proteins. In 23 - 14 kDa gel acidic region were detected proteins with pI 4 - 7 range. 1-D Tris-tricine gel showed proteins with {approx} 7 kDa, suggesting scorpion neurotoxins. In gel basic region only 14 kDa proteins were observed with pI {approx} 9 - 10 range. Conclusion: Molecular profile of the scorpion venom from B. amazonicus showed proteins with high and low molecular masses, mainly with acidic pI. Proteolytic activity suggest serine proteinases with high molecular masses and 7 kDa proteins in B. amazonicus venom suggest scorpion neurotoxins. Purification and molecular characterization of these toxins are in course.

  15. 1-D and 2-D electrophoresis protein profiles of the scorpion venom from Brotheas amazonicus

    International Nuclear Information System (INIS)

    Full text: Introduction: Scorpions venoms show specific neurotoxins to insect or mammals. These toxins are very important molecular tools to development of news drugs or bioinsecticides. Brotheas amazonicus scorpion is an endemic specie in Amazonian Rain Forest, but your venom do not show toxicity in humans. Information about biological specific activity on insect of this venom is not known yet. Objectives: Molecular protein toxins profiles of the venom from Brotheas amazonicus scorpion by 1-D and 2-D electrophoresis methods to detected toxins with potential biotech applications. Results: Several spots 'families' with ∼ 60, 70 and 80 kDa were detected in gel acidic region with pI ∼ 4,5 - 6 range, in the same region 1-D zimography showed proteolytic activity on gelatin and fibrinogen and proteolytic activity was inhibited by PMSF, suggesting scorpion serine proteinases. 50 kDa proteins were detected with pI ∼ 6,5 - 7 range. In 23 - 50 kDa gel acid region were observed some proteins. In 23 - 14 kDa gel acidic region were detected proteins with pI 4 - 7 range. 1-D Tris-tricine gel showed proteins with ∼ 7 kDa, suggesting scorpion neurotoxins. In gel basic region only 14 kDa proteins were observed with pI ∼ 9 - 10 range. Conclusion: Molecular profile of the scorpion venom from B. amazonicus showed proteins with high and low molecular masses, mainly with acidic pI. Proteolytic activity suggest serine proteinases with high molecular masses and 7 kDa proteins in B. amazonicus venom suggest scorpion neurotoxins. Purification and molecular characterization of these toxins are in course

  16. Heterochromatin patterns and karyotype relationships within and between the genera Brycon and Salminus (Pisces, Characidae

    Directory of Open Access Journals (Sweden)

    Vladimir Pavan Margarido

    1999-09-01

    Full Text Available Chromosomes of two Brycon species (B. lundii and B. microlepis and Salminus hilarii were analyzed. Based on constitutive heterochromatin distribution patterns, karyotypic relationships within and between Bryconinae and Salmininae were examined. A monophyletic origin for the genus Brycon, comprising at least two chromosome synapomorphies (presence of two large submetacentric bearing paracentromeric and telomeric heterochromatin, is suggested. Moreover, Bryconinae and Salmininae may represent a monophyletic unit among Characidae, as they share several chromosome features.Foram analisados os cromossomos de duas espécies de peixes do gênero Brycon (B. lundii e B. microlepis e de Salminus hilarii. Principalmente baseado no padrão de distribuição da heterocromatina constitutiva, foram discutidas as relações cariotípicas dentro e entre os grupos Bryconinae e Salmininae. É sugerida uma origem monofilética para o gênero Brycon, com pelo menos duas sinapomorfias cromossômicas (presença de dois grandes submetacêntricos apresentando blocos pericentromérico e telomérico de heterocromatina constitutiva. Ainda, Bryconinae e Salmininae, compartilhando vários caracteres cromossômicos, podem formar uma unidade monofilética entre os Characidae, na qual outros caracídeos não estão incluídos.

  17. Utilização de diferentes densidades, dietas e formatos de tanque na larvicultura da piracanjuba, Brycon orbignyanus Valenciennes, 1849 (Characiformes, Characidae - DOI: 10.4025/actascibiolsci.v25i1.2082 Use of different densities, diets and tank formats in the larvae culture of the piracanjuba, Brycon orbignyanus Valenciennes, 1849 (Characiformes, Characidae - DOI: 10.4025/actascibiolsci.v25i1.2082

    Directory of Open Access Journals (Sweden)

    Alex Pires de Oliveira Nuner

    2003-04-01

    Full Text Available Com o objetivo de estudar a taxa de sobrevivência e o desenvolvimento de larvas de piracanjuba, Brycon orbignyanus (Characiformes, characidae, foram realizados três experimentos com três repetições por tratamento. Os experimentos consistiram em testar três diferentes estoques iniciais de densidade (5, 15 e 25 larvas de piracanjuba/L, três dietas (Artemia sp, ração comercial e larva de curimbatá, Prochilodus lineatus e dois formatos de tanque de larvicultura (quadrado e retangular. Os parâmetros de qualidade de água foram medidos duas vezes ao dia. A alimentação foi oferecida em um intervalo de 4 horas, iniciando após a abertura da boca das larvas. Sob as condições de realização deste experimento, conclui-se que as diferentes densidades de estocagem utilizadas, assim como as três diferentes dietas, não influenciaram a sobrevivência, média de peso, comprimento e altura dorso-ventral das larvas de piracanjuba. Entretanto, o comprimento e o peso das larvas, diferentemente dos outros fatores, foi significativamente melhor no tanque de formato quadradoAiming to study the survival rate and the development of piracanjuba, Brycon orbignyanus (Characiformes, characidae fry, three experiments were set, with three repetitions by treatment. The experiments consisted of testing three different initial stocking densities (5, 15 and 25 piracanjuba larvae/L, three diets (Artemia sp, commercial ration and curimbatá larvae, Prochilodus lineatus and two formats of hatchery tank (square and rectangular. The parameters of water quality were measured twice a day. The feeding was offered in a 4-hour interval, beginning soon after the mouth-opening of the fry. The results showed that different stocking densities and diets didn't influence the larvae survival, average weight, length and back-ventral height. However, the average weight and length were significantly better in the square tank

  18. LD5o of the bacteria Aeromonas hydrophila to matrinxã, Brycon amazonicus DL5o da bactéria Aeromonas hydrophila para o matrinxã, Brycon amazonicus

    Directory of Open Access Journals (Sweden)

    Sarah Ragonha de Oliveira

    2011-01-01

    Full Text Available In order to determine the lethal dose (96-h LD50 of the bacteria Aeromonas hydrophila to matrinxã, Brycon amazonicus, to be applied in challenge tests, 90 fish (63.23 ± 6.39 g were divided into five treatments, with different bacterial solutions: T1 - Control (0.9% NaCl saline solution; T2 (4 x 10(11 cells/ mL; T3 (5 x 10(11 cells/ mL; T4 (1.36 x 10(12 cells/ mL and T5 (3.06 x 10(12 cells/ mL. Fish were previously anesthetized with benzocaine (60 mg L-1, inoculated in the peritoneal cavity with the bacterial suspensions and then distributed into fifteen 80-L test chambers, where the water variables were monitored and fish mortality was observed. The experiment was randomly designed in three replicates and the 96-h LD50 was estimated according to the trimmed Spearman-Karber method. Water quality variables remained within adequate ranges for fish health and performance. Fish mortality rate increased with the bacterial concentrations of A. hydrophila (T1 = 0%; T2 = 16.66%; T3 = 44.44%; T4 = 72.22% and T5 = 100%, and the first mortalities were observed after 57 h, although the signs of the bacterial infection were already observed 24 h after the inoculation. The results indicate that the 96-h LD50 value of A. hydrophila to matrinxã is 6.66 x 10(11 cells/ mL.Para determinar a dose letal (DL50 96-h da bactéria Aeromonas hydrophila para o matrinxã, Brycon amazonicus, com aplicabilidade para testes de desafio, foram utilizados 90 peixes (63,23 ± 6,39 g, divididos em cinco tratamentos, com diferentes soluções bacterianas: T1 - Controle (solução salina 0,9% NaCl; T2 (4 x 10(11 células/ mL; T3 (5 x 10(11 células/ mL-1; T4 (1,36 x 10(12 células/mL-1 e T5 (3,06 x 10(12 células/ mL-1. Os peixes foram previamente anestesiados com benzocaína (60 mg L-1, inoculados na cavidade peritoneal com as suspensões bacterianas e distribuídos em 15 aquários de vidro de 80 L de capacidade, com aeração constante. O experimento teve duração de 96 h, no

  19. Influência do formato do aquário na sobrevivência e no desenvolvimento de larvas de matrinxã Brycon cephalus (Osteichthyes, Characidae Effects of two formats of aquariums on survival and development of matrinxã Brycon cephalus larvae (Osteichthyes, Characidae

    Directory of Open Access Journals (Sweden)

    Marcelo Mattos Pedreira

    2006-04-01

    Full Text Available Neste experimento, utilizaram-se cinco aquários cilíndricos com relevo no fundo (em forma de anel e cinco retangulares com fundo liso para estudo da influência do formato do aquário na sobrevivência e no desenvolvimento de larvas de matrinxã Brycon cephalus. Observou-se melhor eficiência dos aquários retangulares, confirmada pela maior sobrevivência e biomassa. Os valores de temperatura, pH, condutividade e oxigênio dissolvido foram similares entre os tipos de aquários, sugerindo que esses parâmetros não influenciaram os resultados. O relevo no fundo dos aquários cilíndricos afetou negativamente o cultivo de larvas de matrinxã, pela criação de zonas com pequena capacidade da água em suspender partículas, o que resultou em acúmulo de dejetos, predadores, competidores e alimento. Aquários retangulares com fundo liso são mais adequados ao cultivo de larvas de matrinxã, por promover melhor circulação da água.This experiment compared the effects of five cylindrical aquarium with circular relief in the bottom or a rectangular aquariums with flat bottom on the intensive cultivation of matrinxã larvae (Brycon cephalus. Five aquariums of each format were used and the rectangular aquarium was the most efficient, confirmed by better survival average and biomass. Limnological variables were similar between aquariums, assuming that the parameters did not affect the results. The bottom relief in the aquarium resulted in areas with slow flow velocity, which resulted in the accumulation of waste, predators competitors and aliment, showing negative effects to culture of matrinxã. Rectangular aquariums with flat bottom are more recommended for matrinxã culture, because it provides better water circulation.

  20. Three new species of Hyphessobrycon (Characiformes: Characidae from the upper rio Araguaia basin in Brazil

    Directory of Open Access Journals (Sweden)

    Flávio C. T. Lima

    2003-09-01

    Full Text Available Three new species of Hyphessobrycon (Characiformes: Characidae are described from the upper rio Araguaia basin. Hyphessobrycon langeanii n. sp. is distinguished from all congeners by the presence of a well-defined, round humeral spot, a reticulate color pattern, a broad, horizontally-elongate caudal-peduncle blotch, and a relatively wide, faint midlateral dark stripe. Hyphessobrycon eilyos n. sp. is distinguished from all congeners by the absence of humeral and caudal spots; by the presence of numerous dark chromatophores on the lateral surface of the body, intensely concentrated on the ventral region from the pelvic-fin origin to the end of the caudal-fin base, dorsal, adipose, and caudal fins with carmine red pigmentation in life; and the presence of 7-11 maxillary teeth. Hyphessobrycon weitzmanorum n. sp. is distinguished from all congeners by the combination of the possession of two humeral spots and a general dark color pattern. These three new species, along with Creagrutus molinus (Characidae, Apareiodon tigrinus (Parodontidae, Aspidoras velites (Callichthyidae, an undescribed member of the Hypoptopomatinae (Loricariidae, Cnesterodon septentrionalis (Poeciliidae, and Simpsonichthys cholopteryx (Rivulidae, all of which are apparently endemic of the upper rio Araguaia, indicate that this area is a previously unrecognized area of endemism.Três novas espécies do gênero Hyphessobrycon (Characiformes: Characidae são descritas para a bacia do alto rio Araguaia. Hyphessobrycon langeanii n.sp. se distingue de seus congêneres pela presença de uma mancha umeral redonda e bem definida, de um padrão reticulado de colorido, de uma mancha no pedúnculo caudal horizontalmente alongada e de uma faixa longitudinal larga e difusa. Hyphessobrycon eilyos n.sp. se distingue de seus congêneres pela ausência de manchas umeral e caudal, pela presença de numerosos cromatóforos escuros nas laterais do corpo, mais concentrado na porção ventral da origem

  1. Optimization of sustaining swimming speed of matrinxã Brycon amazonicus: performance and adaptive aspects Otimização da velocidade de nado sustentado em matrinxã Brycon amazonicus: rendimento e aspectos adaptativos

    Directory of Open Access Journals (Sweden)

    Gustavo Arbeláez-Rojas

    2010-01-01

    Full Text Available Deleterious changes in metabolism, growth performance and body composition may be observed if fish are constrained to swimming continuously or intermittently at over-speeds. This study evaluates effects of four water speeds on growth, body composition and hematologic profile of juvenile matrinxã, Brycon amazonicus. Fish (33.3 ± 0.9 g and 13.44 ± 0.1 cm were held for 90 days in five water speeds (0.0 - control, 1.0, 1.5, 2.0 and 2.5 body lengths per second - BLAt swimming speeds ranging on 1.0 and 1.5 BL s–1, in fish growth was 20% higher. Hemoglobin and red blood cells at 1.5 BL s–1 increased 24% and 18% respectively; hematocrit was 17% higher in all exercised fish; protein content of white muscle at 1.0 BL s–1 was 2% higher; lipid deposition in red muscle at 1.0 BL s–1 was 22% higher and water retention 3% lower. Crude energy levels enhanced 10% in all exercised fish; liver water retention was 6% lower at 1.0 BL s–1; liver lipid composition was 29% higher than control and 34% higher than 1.5 BL s–1; liver crude energy increased at 1.0 BL s–1 as compared with control and 2.5 BL s–1. Lipid deposition in ventral muscle was 9% higher at 2.0 BL s–1. Although high lipid deposition of matrinxã has been achieved in moderate swimming speeds, lipids may be the main fuel source to maintain the metabolic demands of exercised matrinxã. The best water flow speed for optimized growth of matrinxã ranged on 1.0 and 1.5 BL s–1.Modificações deletérias no metabolismo, rendimento de crescimento e composição corporal podem ser observadas em peixes forçados à natação contínua ou intermitente sob velocidades excessivas. Neste trabalho, os efeitos de quatro velocidades de água no crescimento, composição corporal e perfil hematológico foram avaliados em matrinxãs juvenis, Brycon amazonicus. Os peixes (33,3 ± 0,9 g e 13,44 ± 0,1 cm foram mantidos durante 90 dias em cinco velocidades de água (0,0 – controle; 1,0; 1,5; 2,0 e 2

  2. Desenvolvimento e diferenciação dos ovócitos de pacu, Piaractus mesopotamicus (Holmberg, 1887) (Osteichthyes, Characidae) Oocyte development and differentiation in pacu, Piaractus mesopotamicus (Holmberg, 1887) (Osteichthyes, Characidae)

    OpenAIRE

    Massuka Yamane Narahara; Elizabeth Romagosa

    2002-01-01

    O objetivo deste trabalho foi o de esclarecer dúvidas referentes ao desenvolvimento e à diferenciação dos ovócitos de Piaractus mesopotamicus (Osteichthyes, Characidae), ultra-estruturalmente, acompanhando as transformações que ocorreram durante o processo de ovogênese tais como: formação e acúmulo de várias organelas, inclusões nucleares e/ou citoplasmáticas e a camada ou envelope folicular. Na fase de crescimento primário são evidentes os corpúsculos de Balbiani, mas não são claros seus pap...

  3. Physiological responses of matrinxã (Brycon amazonicus fed different levels of vitamin C and submitted to air exposure Respostas fisiológicas de matrinxã (Brycon amazonicus arraçoados com diferentes níveis de vitamina C e submetidos à exposição aérea

    Directory of Open Access Journals (Sweden)

    Janessa Sampaio de Abreu

    2006-12-01

    Full Text Available The role of vitamin C on physiological responses of matrinxã (Brycon amazonicus submitted to air exposure was analyzed. Nine hundred fish (70.15 g were distributed in fifteen 500 l boxes (60 fish.box-1 and fed five rations (treatments: Control (no vitamin C; T100 (100 mg; T200 (200 mg; T400 (400 mg and T800 (800 mg of vitamin C kg.ration-1. Each ration was offered to fish of three boxes during 60 days before the stress challenge that consisted of exposing fish to air for two minutes. Samplings were carried out for 5, 15, 30 and 60 minutes after the air exposure. Blood was collected for glucose, cortisol, total protein, sodium, chloride, hematocrit, hemoglobin determination, and white and red cell count. Liver was removed for hepatosomatic index (HSI calculation and glycogen determination. Vitamin C did not affect the levels of cortisol, chloride, total protein, hemoglobin, leukocytes, hepatic glycogen or HSI in air exposed fish. Blood glucose levels elevation observed 60 minutes after the challenge did not depend on the levels of vitamin C, nor did the drop in serum sodium levels verified 60 minutes after stressor. In general, hematocrit did not change by effect of vitamin C but it was lower at 15 and 30 minutes after the challenge. The number of erythrocytes decreased in fish after 5 minute sampling in all treatments, especially at 30 and 60 minutes. The air exposure evoked alterations in stress indicators of matrinxã, and the vitamin C did not alter the responses.Este trabalho avaliou a participação da vitamina C nos indicadoras de estresse no matrinxã (Brycon amazonicus, durante exposição aérea. Novecentos peixes (70,15g foram distribuídos em caixas de cimento (500 l e alimentados com os tratamentos: Controle (sem vitamina C; T100 (100 mg; T200 (200 mg; T400 (400 mg; T800 (800 mg de vitamina C kg.ração-1. Cada ração foi fornecida a peixes de três caixas por 60 dias antes da aplicação do estressor, que consistiu em suspender os

  4. Desenvolvimento e diferenciação dos ovócitos de pacu, Piaractus mesopotamicus (Holmberg, 1887 (Osteichthyes, Characidae Oocyte development and differentiation in pacu, Piaractus mesopotamicus (Holmberg, 1887 (Osteichthyes, Characidae

    Directory of Open Access Journals (Sweden)

    Massuka Yamane Narahara

    2002-05-01

    Full Text Available O objetivo deste trabalho foi o de esclarecer dúvidas referentes ao desenvolvimento e à diferenciação dos ovócitos de Piaractus mesopotamicus (Osteichthyes, Characidae, ultra-estruturalmente, acompanhando as transformações que ocorreram durante o processo de ovogênese tais como: formação e acúmulo de várias organelas, inclusões nucleares e/ou citoplasmáticas e a camada ou envelope folicular. Na fase de crescimento primário são evidentes os corpúsculos de Balbiani, mas não são claros seus papéis. Estão presentes, também, as peculiares estruturas lamelares. A segunda fase, a de crescimento secundário, caracteriza-se, inicialmente, pela formação de alvéolos corticais. A seguir, os grânulos de vitelo protéico formam-se na região periférica com abundância de mitocôndrias e ribossomos. Mudanças no epitélio folicular (granulosa são descritas concomitantemente com a formação da zona radiata, que constitui o envoltório folicular (envelope.This work aim is to clarify doubts about the Piaractus mesopotamicus (Osteichthyes, Characidae oocyte ultrastructural development and differentiation, following the transformations during the ovogenic processes, such as formation and accumulation of various organelles, nucleolar and/or citoplasmic inclusions, and follicular wall (envelope. During the primary growth phase, Balbiani corpuscles are evident, but their role is not clear. The peculiar lamellae structures are also present. The second phase (secondary growth is initially characterized by cortical alveolus formation. After that, protein yolk granules appear in the peripherical regions, where mitochondria and ribosomes are abundant. Changes in the follicle epitelium (granulosa are described together with the radiate zone formation, which constitutes the follicular envelope.

  5. Molecular phylogeny of the subfamily Stevardiinae Gill, 1858 (Characiformes: Characidae): classification and the evolution of reproductive traits

    OpenAIRE

    Thomaz, Andréa T.; Arcila, Dahiana; Ortí, Guillermo; Luiz R. Malabarba

    2015-01-01

    Background The subfamily Stevardiinae is a diverse and widely distributed clade of freshwater fishes from South and Central America, commonly known as “tetras” (Characidae). The group was named “clade A” when first proposed as a monophyletic unit of Characidae and later designated as a subfamily. Stevardiinae includes 48 genera and around 310 valid species with many species presenting inseminating reproductive strategy. No global hypothesis of relationships is available for this group and cur...

  6. Phylogenetic relationships within the speciose family Characidae (Teleostei: Ostariophysi: Characiformes) based on multilocus analysis and extensive ingroup sampling

    OpenAIRE

    Vari Richard P; Ortí Guillermo; Benine Ricardo C; Mariguela Tatiane C; Abe Kelly T; Avelino Gleisy S; Oliveira Claudio; Corrêa e Castro Ricardo M

    2011-01-01

    Abstract Background With nearly 1,100 species, the fish family Characidae represents more than half of the species of Characiformes, and is a key component of Neotropical freshwater ecosystems. The composition, phylogeny, and classification of Characidae is currently uncertain, despite significant efforts based on analysis of morphological and molecular data. No consensus about the monophyly of this group or its position within the order Characiformes has been reached, challenged by the fact ...

  7. Biologia do saguirú (Characidae, Curimatinae

    Directory of Open Access Journals (Sweden)

    P. de Azevedo

    1938-01-01

    Full Text Available In Brazil all the fishes belonging to the sub-family Curimatinae are called « saguirú ». The present work gives a biological study of the Curimatus elegans Steind., a small fish without any economical importance, which is to be found along the whole brazilian coast, down till Paraguay. The specimens utilized for the present study come from Fortaleza (Ceará, north-eastern Brazil. The C. elegans is « ilyophagus », that means, it feeds itself exclusively with those organic materials to be found in mud, specially with microscopical algae. The intestines are very extent, some of them measuring about 9 to 11 times body's length. Studies have been made about growth and age of the C. elegans; the biggest sizes found were of 153 mm. for females and 88 mm. for males. The C. elegans shows developed sexual glands during a long period (April to September. The movements of the spermatozoa, in contact with water is of 40 to 50 seconds of intense movements, ceasing after 70 to 100 seconds. In contact with 0.5% NaCl-solution spermatozoa show a big increase in movements-time, that can last till about 25 minutes. The eggs' diameter measures 0.70 to 0.73 mm., mature and hydrated it attains 0.93 to 1,00 mm. There is a certain correlation between the size of the body and the quantity of eggs. Big specimens can produce a total of 200.000 eggs. The average quantity contained in 1 gr. and 1 cc. is 6018 and 6229 eggs, respectively. Maturity and spawning in laboratory has been obtained due to injections of suspension of fish-hypophysis. Three or four hours after the injection, fishes show more movement and evident signs of excitation, proceeding spawning after 5 to 6 hours. Males, persecuting females, describe successive circles (merry-go-round - carroussel, swimming side by side with females up to water's surface, where sexual products are start beating dry, for there is no blood yet. Circulation-scheme is to be found on fig. 4 and 5. The swim-bladder and the

  8. Phylogenetic relationships within the speciose family Characidae (Teleostei: Ostariophysi: Characiformes based on multilocus analysis and extensive ingroup sampling

    Directory of Open Access Journals (Sweden)

    Vari Richard P

    2011-09-01

    Full Text Available Abstract Background With nearly 1,100 species, the fish family Characidae represents more than half of the species of Characiformes, and is a key component of Neotropical freshwater ecosystems. The composition, phylogeny, and classification of Characidae is currently uncertain, despite significant efforts based on analysis of morphological and molecular data. No consensus about the monophyly of this group or its position within the order Characiformes has been reached, challenged by the fact that many key studies to date have non-overlapping taxonomic representation and focus only on subsets of this diversity. Results In the present study we propose a new definition of the family Characidae and a hypothesis of relationships for the Characiformes based on phylogenetic analysis of DNA sequences of two mitochondrial and three nuclear genes (4,680 base pairs. The sequences were obtained from 211 samples representing 166 genera distributed among all 18 recognized families in the order Characiformes, all 14 recognized subfamilies in the Characidae, plus 56 of the genera so far considered incertae sedis in the Characidae. The phylogeny obtained is robust, with most lineages significantly supported by posterior probabilities in Bayesian analysis, and high bootstrap values from maximum likelihood and parsimony analyses. Conclusion A monophyletic assemblage strongly supported in all our phylogenetic analysis is herein defined as the Characidae and includes the characiform species lacking a supraorbital bone and with a derived position of the emergence of the hyoid artery from the anterior ceratohyal. To recognize this and several other monophyletic groups within characiforms we propose changes in the limits of several families to facilitate future studies in the Characiformes and particularly the Characidae. This work presents a new phylogenetic framework for a speciose and morphologically diverse group of freshwater fishes of significant ecological and

  9. Cryopreservation of yamú (Brycon amazonicus) sperm for large scale fertilization

    DEFF Research Database (Denmark)

    Velasco-Santamaría, Yohana M.; Medina-Robles, Mauricio; Cruz-Casallas, Pablo E.

    2006-01-01

    . Sperm was diluted (1:4) in a solution of glucose, egg yolk and dimethyl sulfoxide (DMSO). Sperm concentration was determined using a Neubauer chamber, and motility evaluated after activation with 1% NaHCO3. In the laboratory, four sizes of straw (0.5, 1.8, 2.5 and 4.0 mL) and two thawing temperatures...

  10. Feeding ecology of stream-dwelling Characidae (Osteichthyes: Characiformes) from the upper Tocantins River, Brazil

    OpenAIRE

    Maíra Moraes; Carla Ferreira Rezende; Rosana Mazzoni

    2013-01-01

    In this contribution we studied the trophic ecology of four Characidae species from the Cavalo Stream, upper Tocantins River, considering diet overlap and trophic niche breadth. The diet of the four species was composed of adult and immature insects, both autochthonous and allochthonous in origin. Autochthonous items dominated the diet of Moenkhausia dichroura (Kner, 1858), Bryconamericus sp., and Creagrutus atrisignum Myers, 1917. By contrast, allochthonous items were dominant in the diet of...

  11. Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil

    OpenAIRE

    Flávio C. T. Lima; Cristiano R. Moreira

    2003-01-01

    Three new species of Hyphessobrycon (Characiformes: Characidae) are described from the upper rio Araguaia basin. Hyphessobrycon langeanii n. sp. is distinguished from all congeners by the presence of a well-defined, round humeral spot, a reticulate color pattern, a broad, horizontally-elongate caudal-peduncle blotch, and a relatively wide, faint midlateral dark stripe. Hyphessobrycon eilyos n. sp. is distinguished from all congeners by the absence of humeral and caudal spots; by the presence ...

  12. Feeding pattern of Salminus maxillosus (Pisces, Characidae at Cachoeira das Emas, Mogi-Guaçu River (São Paulo State, Southeast Brazil Padrão de alimentação de Salminus maxillosus (Pisces, Characidae em Cachoeira das Emas, Rio Mogi-Guaçu (Estado de São Paulo, Sudeste do Brasil

    Directory of Open Access Journals (Sweden)

    K. E. ESTEVES

    2001-05-01

    Full Text Available Diet of 364 specimens of the dourado (Salminus maxillosus was studied monthly at Cachoeira das Emas from November/1996 to May/1998, considered the breeding ground of this and other migrant fishes of Mogi-Guaçu River. Only adults were found at this site, and diet consisted exclusively of fish, with predominance of Leporinus sp. Seasonal variation in feeding activity was highest during some months of the rainy and hot season (September-December, when fish composition and number of prey species consumed also changed. These modifications were primarily attributed to an increase in food availability at the site of study during the rainy season, once most of the migrant species, including small Characidae concentrate there at this time of year. Apparently diet shifts, prey availability and rainfall are intimately related, representing a combination of factors that may account for the observed patterns of resource exploitation.A dieta de 364 exemplares do dourado (Salminus maxillosus foi estudada mensalmente na região denominada Cachoeira das Emas de novembro/1996 a maio/1998, local considerado o lar de reprodução desta e de outras espécies migratórias do Rio Mogi-Guaçu. Foram capturados apenas adultos, sendo a dieta composta exclusivamente por peixes com predominância de Leporinus sp. Foi observada variação sazonal da atividade alimentar, que foi maior na estação quente e chuvosa (setembro a dezembro, época na qual a composição e o número de presas consumidas foram distintas. Essas mudanças foram basicamente atribuídas a um aumento da disponibilidade de presas no local de estudo durante o período chuvoso, visto que a maioria das espécies migratórias, incluindo pequenos Characidae, se concentra aí nessa época. Aparentemente, as mudanças na dieta de S. maxillosus, a disponibilidade de presas e a pluviosidade estão intimamente correlacionadas, representando uma combinação de fatores que explicam os padrões de exploração de

  13. Redescription of Hyphessobrycon flammeusMyers, 1924 (Ostariophysi: Characidae, a threatened species from Brazil

    Directory of Open Access Journals (Sweden)

    Fernando R. Carvalho

    2014-06-01

    Full Text Available One of the most gorgeous colored and endangered Hyphessobryconspecies, H. flammeus Myers, is redescribed. Diagnostic characters of the species are two vertically elongated humeral spots, no caudal peduncle blotch, 5-8 maxillary teeth, caudal fin hyaline, and longitudinal dark stripe of the body absent. Sexual dimorphism is present, with males being more colored than females and having bony hooks in the anal and pelvic fins, which are dark in their terminal portions. Comments about its occurrence in the upper rio Tietê drainage (upper rio Paraná basin, its conservation status, and the phylogenetic position into Characidae context are also presented.

  14. Hyphessobrycon ocasoensis sp. n. (Teleostei, Characidae una nueva especie para el Alto Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    García-Alzate, C. A.

    2008-12-01

    Full Text Available Hyphessobrycon ocasoensis n. sp. (Teleostei, Characidae a new species from the Alto Cauca, Colombia Hyphessobrycon ocasoensis n. sp. (Characiformes, Characidae from heterorhabdus group (Gery, 1977 is described from the upper Cauca River in Colombia. The new species is distinguished from all other known species by the following combination of characters: three unbranched and eight branched fins in the dorsal fin; short maxillary bone with one or no teeth; four small foramens in the maxillary bone, and five in the premaxillary; 5-17 scales with pores in the lateral line, six between the lateral line and anal-fin origin, six between the lateral line and pelvic-fin origin, and nine predorsals; depth of the caudal peduncle has a mean of 16.7% in standard length; interorbital width 50.6% in head; a dark spot on caudal peduncle and a dark lateral band that extends vertically from the dorsal–fin origin to the tips of the middle caudal fin rays. Physical and chemical data of their habitat are included.

  15. The phylogenetic placement of Hollandichthys Eigenmann 1909 (Teleostei: Characidae) and related genera.

    Science.gov (United States)

    Thomaz, Andréa T; Malabarba, Luiz R; Bonatto, Sandro L

    2010-12-01

    The phylogenetic relationships among characids are complex with many genera remaining of uncertain systematic position inside the family. The genus Hollandichthys is one of these problematic genera. It has been considered as incertae sedis inside this family until two recently published phylogenies, one morphological and one molecular, arrived at alternative hypothesizes as to the relationships of Hollandichthys with Pseudochalceus or Rachoviscus, respectively. In this paper, we infer the phylogenetic relations of these taxa based on five genes (three mitochondrial - COI, ND2 and 16S; and two nuclear - Sia and Trop), totaling up to 2719 bp. The 41 analyzed species in the Characidae include four incertae sedis characid taxa once hypothesized as related to Hollandichthys, but never analyzed in a single phylogeny (Rachoviscus, Pseudochalceus, Nematocharax and Hyphessobrycon uruguayensis). Here we propose Rachoviscus as the sister-group of Hollandichthys, grouped in the large clade C previously defined, along with the remaining incertae sedis taxa studied here. In addition, we support the evidence that insemination evolved independently at least three times in the Characidae. PMID:20965264

  16. Otimização das condições de extração de saponinas em Ampelozizyphus amazonicus usando planejamento experimental e metodologia de superfície de resposta

    Directory of Open Access Journals (Sweden)

    Fabiane M dos Santos

    2011-09-01

    Full Text Available This works describes the use of experimental design and surface response methodology for optimization of saponin extraction from Ampelozizyphus amazonicus. For this purpose, a method employing extraction based on maceration assisted by ultrasound technique was utilized. The following factors were studied: extraction length of time and solvent composition. The total saponin was determined by using a gravimetric method and the results expressed by their relative proportion to total crude extract. For the specific condition, 60% hydro-alcoholic solution and 18 minutes extraction length of time has shown the best results. This method can be useful for extraction of substances with biological importance

  17. O efeito da floresta alagada na alimentação de três espécies de peixes onívoros em lagos de várzea da Amazônia Central, Brasil Effects of flooded forest in the diet of three fish species in floodplain lakes of Central Amazon, Brazil

    Directory of Open Access Journals (Sweden)

    Luiz Claro-Jr

    2004-01-01

    Full Text Available As enchentes anuais dos rios na Amazônia alagam extensas áreas de floresta conhecidas como várzeas ou igapós. Estas áreas têm papel importante na vida dos peixes da região, pois são fontes de alimento e de abrigo. Acreditamos que o desmatamento destas áreas ocasiona prejuízos à ictiofauna principalmente pela diminuição da quantidade e diversidade de alimento disponível. O estudo da relação entre a quantidade de floresta e a dieta de Parauchenipterus galeatus (Auchenipteridae, Siluriformes, Mylossoma duriventre (Characidae, Characiformese Triportheus elongatus (Characidae, Characiformespermitiu registrar pela primeira vez a influência direta da floresta alagada na ecologia alimentar de peixes na Amazônia Central.The annual flooding of the rivers in the Amazonia extends over large forest areas known as várzeas or igapós. These areas play an important role in the life of the fishes, as a source of food and shelter. We believe that the deforestation of these areas may affect negatively the fish fauna mainly by decreasing the amount of food resources and consequently the diversity of food types available. The study of the relationship between the riparian forest cover and the diet of Parauchenipterus galeatus (Auchenipteridae, Siluriformes, Mylossoma duriventre (Characidae, Characiformes and Triportheus elongatus (Characidae, Characiformes allowed to refer for the first time on the direct influence of the flooded forest in the feeding ecology of fishes in Central Amazonia.

  18. Coptobrycon bilineatus (Ellis, 1911 (Characiformes: Characidae: redescription and comments on its phylogenetic relationships

    Directory of Open Access Journals (Sweden)

    Francisco Langeani

    2010-01-01

    Full Text Available Coptobrycon bilineatus (Ellis, 1911 is redescribed on the basis of specimens from the District of Paranapiacaba, Municipality of Santo André, upper rio Tietê, and additional ones recently collected in a small coastal river system of Serra do Mar, very near the headwaters of the rio Tietê. The genus was compared to other Characidae lacking a supraorbital, and it seems to be more phylogenetically related to Grundulus based on the possession of various putative apomorphic character states related to: the absence of a rhinosphenoid and fourth, fifth (sometimes and sixth infraorbitals; nasal pores separated; nares with up to six nasal lamellae; cephalic laterosensory system poorly developed on supraorbital and infraorbital series; and a globose scapula. Furthermore, Coptobrycon and Grundulus are characterized by the absence of the adipose fin, of the supraorbital laterosensory series on the parietal, and of the humeral spot, and by the reduction of lateral musculature in front of the first pleural rib and between the first and second pleural ribs. Biogeographic comments are also provided.Coptobrycon bilineatus (Ellis, 1911 é redescrita com base em exemplares provenientes do Distrito de Paranapiacaba, Município de Santo André, alto rio Tietê, e de um pequeno sistema costeiro da Serra do Mar, muito próximo às cabeceiras do rio Tietê. O gênero foi comparado com outros Characidae sem supraorbital e parece ser mais proximamente relacionado a Grundulus, pela posse de vários estados apomórficos de caracteres: ausência de rinoesfenoide e dos infraorbitais quatro, cinco (eventualmente e seis; poros nasais separados e não confluentes; narinas com no máximo seis lamelas nasais; sistema látero-sensorial cefálico pouco desenvolvido nas séries supraorbital e infraorbital; e escápula globosa. Adicionalmente, Coptobrycon e Grundulus são também caracterizados pelas: ausências de nadadeira adiposa, da série látero-sensorial cef

  19. Mutilating predation in the Cheirodontinae Odontostilbe pequira (Characiformes: Characidae

    Directory of Open Access Journals (Sweden)

    Monise R. L. Lima

    2012-01-01

    Full Text Available We observed individuals of Odontostilbe pequira, a small characid, approaching and biting individuals of larger-bodied fishes of other species. This observation was made in two clear water headwater streams of the Cuiabá basin, Paraguay River system, located in Nobres, Mato Grosso State, Brazil, which led us to investigate the behavioral interactions of these fish. We characterized behavioral interactions between species by direct underwater observations using snorkelling and video recordings. Additionally, we proceeded diet analyses of O. pequira, obtaining intestinal coefficient and the index of alimentary importance. During underwater observations we checked the relative frequency of attacks by O. pequira on larger fish species. Odontostilbe pequira attacked individually or in large groups, and the anostomid Leporinus friderici was the preferred target prey species, while Prochilodus lineatus was apparently avoided. Our study sustains that O. pequira is omnivorous, with a diet that varies seasonally. It feeds mainly on plants, but also on animal prey, including the scales of small fishes, and, possibly, the mucus and epidermis of larger fish species. We suggest the term "mutilating predation" to describe the latter relationship.Observamos indivíduos de Odontostilbe pequira, um caracídeo pequeno, abordando e mordendo peixes maiores de outras espécies. Essa observação foi feita em dois riachos de cabeceira com águas cristalinas na bacia do rio Cuiabá, sistema do rio Paraguai, localizados em Nobres, Mato Grosso, Brasil, o que nos levou a investigar a interação comportamental desses peixes. Nós o fizemos através de observações subaquáticas diretas usando mergulho livre e vídeo. Adicionalmente, realizamos a análise da dieta de O. pequira, obtendo seu coeficiente intestinal e índice de importância alimentar. Nas observações subaquáticas avaliamos a frequência relativa dos ataques de O. pequira sobre peixes maiores

  20. Abundance, feeding and reproduction of Salminus sp. (Pisces: Characidae from mountain streams of the Andean piedmont in Venezuela

    Directory of Open Access Journals (Sweden)

    Douglas Rodríguez-Olarte

    2006-03-01

    Full Text Available To obtain basic information for management, aspects of the ecology of Salminus sp. (Pisces: Characidae, were studied in piedmont rivers of the southwestern flank of the Andes in Venezuela. Collections were made with seines of various lengths and mesh sizes, and both underwater and terrestrial observations were recorded to estimate abundance and feeding events. Interviews with local fishermen and inhabitants were made to obtain data on use. The species is present along the entire length of the Andean piedmont in Venezuela, although in some rivers it is now scarce. Small individuals form mixed schools with Brycon whitei, but larger Salminus sp. usually only school with others of the same species. Average abundance was greater in larger rivers, and didn't vary appreciably with season for any of the rivers studied. Size and weight ranged from 15.1 to 40.5 cm SL and 47.7 to 1,210 g, respectively. Females had maximum ovary maturity at the beginning of the rainy season, with an average fecundity of 35,834 eggs, and spawning occurred during spates of high water. Feeding was crepuscular, with most events recorded during the first and last hours of sunlight. In smaller fish up to 20 cm SL, the diet was varied, but above that size fish were the principal food item. Salminus sp. has little commercial importance in this region but forms an important part of the local subsistence fishery, and occasionally it is targeted for sport fishing. The minimum legal size of capture for the species should be raised, since the current limit permits the capture of many sexually immature individuals.Para obter informações básicas para o manejo de Salminus sp. no sopé andino ocidental da Venezuela, se estudaram aspectos sobre sua ecologia e aproveitamento. Nos rios do sopé da montanha efetuaram-se capturas de peixes com variados tamanhos de malha, assim como observações subaquáticas e terrestres para estimar abundâncias e eventos de alimentação. Aplicaramse

  1. Whole chromosome painting of B chromosomes of the red-eye tetra Moenkhausia sanctaefilomenae (Teleostei, Characidae)

    Science.gov (United States)

    Scudeler, Patricia Elda Sobrinho; Diniz, Débora; Wasko, Adriane Pinto; Oliveira, Claudio; Foresti, Fausto

    2015-01-01

    Abstract B chromosomes are dispensable genomic elements found in different groups of animals and plants. In the present study, a whole chromosome probe was generated from a specific heterochromatic B chromosome occurring in cells of the characidae fish Moenkhausia sanctaefilomenae (Steindachner, 1907). The chromosome painting probes were used in fluorescence in situ hybridization (FISH) experiments for the assessment of metaphase chromosomes obtained from individuals from three populations of Moenkhausia sanctaefilomenae. The results revealed that DNA sequences were shared between a specific B chromosome and many chromosomes of the A complement in all populations analyzed, suggesting a possible intra-specific origin of these B chromosomes. However, no hybridization signals were observed in other B chromosomes found in the same individuals, implying a possible independent origin of B chromosome variants in this species. FISH experiments using 18S rDNA probes revealed the presence of non-active ribosomal genes in some B chromosomes and in some chromosomes of the A complement, suggesting that at least two types of B chromosomes had an independent origin. The role of heterochromatic segments and ribosomal sequences in the origin of B chromosomes were discussed. PMID:26753081

  2. Feeding ecology of stream-dwelling Characidae (Osteichthyes: Characiformes from the upper Tocantins River, Brazil

    Directory of Open Access Journals (Sweden)

    Maíra Moraes

    2013-12-01

    Full Text Available In this contribution we studied the trophic ecology of four Characidae species from the Cavalo Stream, upper Tocantins River, considering diet overlap and trophic niche breadth. The diet of the four species was composed of adult and immature insects, both autochthonous and allochthonous in origin. Autochthonous items dominated the diet of Moenkhausia dichroura (Kner, 1858, Bryconamericus sp., and Creagrutus atrisignum Myers, 1917. By contrast, allochthonous items were dominant in the diet of Astyanax bimaculatus (Linnaeus, 1758. Trophic niche breadth varied among species, with the highest value recorded for M. dichroura (0.48, followed by Bryconamericus sp. (0.39, A. bimaculatus (0.33 and C. atrisignum (0.29. Similarity analysis revealed two groups with different patterns of food preference. The first group was composed of insectivorous and the second by omnivorous species. The overlap in food items consumed by the four species studied was high. We suggest that resources are not limited in this stream and that competition might not be regulating these populations. This is one more case corroborating the general pattern registered for Tropical environments, where resource partitioning and specialization are responsible by the organization of fish communities.

  3. Efectos del sistema de conservación sobre la fertilidad de oocitos de yamú (Brycon amazonicus durante cortos períodosde almacenamiento Effects of the conservation system on eggs fertility of yamú (Brycon amazonicus during shortterm storage.

    Directory of Open Access Journals (Sweden)

    Yohana M Velasco-Santamaría

    2006-06-01

    Full Text Available El objetivo fue evaluar los efectos del sistema de conservación sobre la fertilidad de oocitos de yamú (Brycon amazonicus durante cortos períodos de almacenamiento. Se utilizaron hembras y machos adultos tratados con extracto de hipófisis de carpa para estimular la ovulación y aumentar el volumen seminal. Oocitos obtenidos de la misma hembra fueron sometidos a tres sistemas de conservación: in situ (IS, mantenidos dentro de la cavidad ovárica, ex situ a temperatura ambiente (T°A y ex situ a temperatura de refrigeración (T°R. El diámetro ovocitario (DO y la viabilidad fueron evaluados a los 0 (control, 15, 30, 60 y 120 min de almacenamiento. El DO fue medido con reglilla acoplada al ocular del estéreomicroscopio y la viabilidad mediante prueba de fertilidad, seminando 3g de oocitos con 250 mL de semen fresco. También fueron medidos la longitud total y el volumen del saco vitelino de las larvas. Bajo los tres sistemas de conservación, DO aumentó con el tiempo, siendo mayor (p0.05 con respecto al control. A los 120 min de almacenamiento, todos los sistemas de conservación mostraron fertilidad menor que el control; sin embargo, en el sistema T°R disminuyó más rápidamente, siendo menor (pThe aim of this study was to evaluate the effects of the conservation system on eggs fertility of yamú (Brycon amazonicus during short-term storage. Mature yamú females and males were induced to stimulated ovulation and spermiation by injection of carp pituitary extract. The eggs obtained from the same female were subjected to three different conservation systems: in situ conservation (IS, in the ovarian cavity, ex situ at room temperature (T°E and ex situ at refrigeration temperature (T°R. The egg diameter (ED and egg viability were evaluated at different times of storage (0 - control-, 15, 30, 60 and 120 min. The ED was measured with a rule coupled to the stereomicroscope objective, and the viability was evaluated by fertility test; for this

  4. Efecto del volumen de empaque sobre la tasa de congelación-descongelación y la fertilidad de semen crioconservado de yamú (Brycon amazonicus Effects of packaged volume on freezing and thawing rates and the fertility of cryopreserved sperm of yamú (Brycon amazonicus

    Directory of Open Access Journals (Sweden)

    V M Medina-Robles

    2007-01-01

    Full Text Available El objetivo fue establecer las condiciones de congelación-descongelación de semen de yamú (Brycon amazonicus empacado en pajillas de diferentes volúmenes y su efecto sobre la movilidad espermática y fertilidad postdescongelación. La inducción a la maduración final de las gónadas fue realizada con extracto de hipófisis de carpa. El semen obtenido fue evaluado y diluido (1:4 en una solución de 5,5% glucosa, 12% yema de huevo y 10% dimetil sulfóxido, empacado en pajillas de 0,5, 1,8, 2,5 o 4,0 mi y congelado en vapores de nitrógeno. La descongelación fue realizada en baño de agua a 35°C, 60°C u 80°C durante diferentes tiempos. Todas las pajillas mostraron una tasa total de congelación similar (entre 7,5 a 12,9°C min-1. A medida que se utilizó una mayor temperatura, la tasa total de descongelación aumentó. Las pajillas de 4,0 mi descongeladas a 35°C tuvieron la mayor movilidad y tiempo de activación posdescongelación (47,0 ± 1,6% y 60,2 ± 2,4 seg. La fertilidad obtenida con semen congelado en todos los volúmenes de empaque fue significativamente menor (P The aim of this study was to evaluate the freezing-thawing conditions of yamú (Brycon amazonicus sperm packaged in straws of different volume and their effect on the spermatic motility and fertility post-thawing. The induction to gonadal final maturation was made with carp pituitary extract. The sperm obtained was evaluated and diluted (1:4 in a solution with 5.5% glucose, 12% egg yolk and 10% dimethyl sulfoxide, packaged in 0.5, 1.8, 2.5 or 4.0 ml straws and frozen in nitrogen vapors. The thawing was carried out in a 35°C, 60°Cor 80°C water bath during different times. All straws showed a similar overall freezing rate (7.5 to 12.9°C min-1. On the other hand, the overall thawing rate was faster at a higher water bath temperature. The 4.0 ml straws thawed at 35°C showed the highest motility and activation time post-thaw (47.0 ± 1.6% and 60.2 ± 2.4 sec. The

  5. Karyotypic diversity among three species of the genus Astyanax (Characiformes: Characidae).

    Science.gov (United States)

    Nishiyama, P B; Vieira, M M R; Porto, F E; Borin, L A; Portela-Castro, A L B; Santos, I C M

    2016-06-01

    The group Incertae sedis within the Characidae family currently includes 88 genera, previously included in the subfamily Tetragonopterinae. Among them is the genus Astyanax comprising a group of species with similar morphology and widely distributed in the Neotropics. Thus, the present study aimed to analyze the karyotype diversity in Astyanax species from different watersheds by conventional Giemsa staining, C-banding and fluorescence in situ hybridization (FISH rDNA 18S) probe.specimens of Astyanax aff. paranae belonging to the "scabripinnis complex", Astyanax asunsionensis and Astyanax aff. bimaculatus were analyzed". Two sympatric karyomorphs were observed in Astyanax.aff paranae, one of them having2n=48andthe other one with 2n=50 chromosomes. Other population of this same species also presented 2n=50 chromosomes, but differing in the karyotype formula and with macro supernumerary chromosome found in 100% of the cells in about 80%of females analyzed. Two population of A. asuncionensis and one population of Astyanax. aff. bimaculatus, also showed a diploid number of 50 chromosomes, but also differing in their karyotype formulas. Therefore, A. asuncionensis was also characterized by intraspecific chromosome diversity. The C-banding analysis was able to demonstrate a distinctable to demonstrate a distinct pattern of heterochromatin differing A. asuncionensis from Astyanax aff. paranae and Astyanax aff. bimaculatus. The supernumerary chromosome of Astyanax aff. paranae proved completely heterochromatic. Only Astyanax.aff. bimaculatus multiple showed multiple sites of nucleolar organizing regions. The other species were characterized by having a simple system of NOR. These data contributes to the know ledge of the existing biodiversity in our fish fauna, here highlighted by the inter- and intraspecific chromosomal diversity in the genus Astyanax. PMID:26934153

  6. New species of miniature fish from Marajó Island, Pará, Brazil, with comments on its relationships (Characiformes: Characidae

    Directory of Open Access Journals (Sweden)

    Manoela M. F. Marinho

    2013-01-01

    Full Text Available A new miniature species of the family Characidae from Marajó Island, Pará State, Brazil is described and assigned to the genus Tyttobrycon. The new species can be distinguished from its congeners primarily by having multicuspid teeth on jaws, and additionally by having the combination of 5-7 premaxillary teeth, dorsal fin only with scattered melanophores and the presence of an adipose fin.

  7. Neotropical Monogenoidea. 24. Rhinoxenus bulbovaginatus n. sp. (Dactylogyridae, Ancyrocephalinae) from the nasal cavity of Salminus maxillosus (Osteichthyes, Characidae) from the Rio Paraná, Paraná, Brazil

    OpenAIRE

    Walter A. Boeger; Marcus V. Domingues; Gilberto C. Pavanelli

    1995-01-01

    Rhinoxenus bulbovaginatus n. sp. is described from the nose of Salminus maxillosus (Characidae) collected in the basin of the rio Paraná, near the city of Porto Rico, state of Paraná, Brazil. The new species can be differentiated from the other three species in the genus by the morphology of the copulatory complex, vagina, and ventral anchor. The sister group relationship of the known species of Rhinoxenus was determined using techniques of Phylogenetic Systematics (Cladism). The resulting cl...

  8. Estudo etnofarmacognóstico da saracuramirá (Ampelozizyphus amazonicus Ducke, uma planta medicinal usada por comunidades quilombolas do Município de Oriximiná-PA, Brasil Ethnopharmacology Study of Saracuramirá (Ampelozizyphus amazonicus Ducke in the "Quilombola" communities of Oriximiná, Pará State, Brazil

    Directory of Open Access Journals (Sweden)

    Danilo Ribeiro de Oliveira

    2011-01-01

    Full Text Available Um levantamento etnobotânico realizado em comunidades quilombolas de Oriximiná, Pará, destacou a saracuramirá (SAR, Ampelozizyphus amazonicus Ducke, com vasto uso popular no tratamento da malária, como tônica e depurativa. Por este motivo, o presente trabalho objetivou realizar um estudo etnofarmacognóstico da SAR nas respectivas comunidades. Por meio de uma análise etnobotânica quantitativa, foi verificado que SAR apresentou-se dentre as 10 espécies mais versáteis pela elevada importância relativa (1,3, dentre as cinco espécies com maior importância cultural pelo elevado índice de saliência (0,311 e a espécie com maior concordância de uso principal para malária (85,7%. Uma análise do índice de espuma e do índice de hemólise para SAR demonstra a presença de saponinas com elevado índice de espuma (833 e uma baixa atividade hemolítica (CH50 2,6 mg mL-1. Para realizar uma análise das agliconas das saponinas de SAR, a bebida preparada pelo método tradicional quilombola (BMT foi hidrolisada e, após reação com diazometano, foi analisada por cromatografia gasosa. Dois sinais majoritários foram caracterizados por espectrometria de massas, um referente a um triterpeno de esqueleto damarânico, característico das saponinas da SAR, e outro referente ao éster metílico do ácido betulínico. Partindo das informações de uso popular da SAR, foi avaliada in vitro a atividade inibidora da acetilcolinesterase. Apesar de BMT não ter mostrado atividade neste ensaio, é possível supor que as indicações de uso desta planta pelos quilombolas como fortificante e contra malária podem estar relacionadas a uma possível atividade adaptógena e imunoestimulante, dada à presença das saponinas e do ácido betulínico em BMT.In an ethnobotanical survey conducted within "Quilombola" communities of Oriximiná, Pará State, "saracuramirá" (SAR, Ampelozizyphus amazonicus Ducke, stood out as one of the most cited species with wide

  9. Variação espaço-temporal na distribuição e abundância de Moenkhausia sanctaefilomenae (Characiformes: Characidae em lagoas da planície de inundação do rio Cuiabá, Pantanal, Brasil=Spatial-temporal variation of the distribution and abundance of Moenkhausia sanctaefilomenae at lagoons of the Cuiaba river floodplain, Pantanal, Brazil

    Directory of Open Access Journals (Sweden)

    Jerry Penha

    2012-01-01

    Full Text Available Identificar os fatores bióticos e abióticos que determinam a variação na distribuição e abundância das populações, tornou-se nos últimos anos um grande desafio para os ecologistas. Assim neste estudo foram avaliados o efeito das variáveis abióticas e a abundância de predadores sobre a abundância de Moenkhausia sanctaefilomenae, a variação no comprimento médio dos indivíduos entre lagoas e períodos e o efeito das variáveis abióticas e da abundância de predadores sobre a estrutura em comprimento. Foram amostradas 16 lagoas da planície de inundação do rio Cuiabá, no período de junho (vazante, setembro (seca e dezembro (enchente de 2005 e março (cheia de 2006. Para M. sanctaefilomenae, a distribuição é mais ampla e a abundância é maior no final da vazante, início da seca, reduzindo-se gradualmente ao longo dos períodos de seca, enchente e cheia. Adicionalmente, o período afeta a estrutura em tamanho das populações, que são espacialmente homogêneas. Indivíduos menores foram capturados no final do período de vazante e os maiores ao início da enchente. Durante o final da vazante/início da seca, a variação espacial na abundância da população foi relacionada positivamente com o pH, o oxigênio dissolvido e cobertura de macrófitas e área da lagoa, mas, não com a abundância local de predadores na zona litorânea das lagoas.Identifying the biotic and abiotic factors that determine the variation in the distribution and abundance of populations has become a great challenge for the field of ecology in recent years. Thus, in this study we evaluated the effect of abiotic variables and the abundance of predators on the abundance of Moenkhausia sanctaefilomenae, the variation in the average length of the individuals between lakes and periods, and the effect of the abiotic variables and abundance of predators on the structure in length of that species. Sixteen lakes of the Cuiabá river flood plain were sampled

  10. Efectos del sistema de conservación sobre la fertilidad de oocitos de yamú (Brycon amazonicus) durante cortos períodos de almacenamiento

    DEFF Research Database (Denmark)

    Velasco-Santamaría, Yohana M.; Corredor-Santamaría, Wilson; Cruz-Casallas, Pablo E.

    2006-01-01

    El objetivo fue evaluar los efectos del sistema de conservación sobre la fertilidad de oocitos de yamú (Brycon amazonicus) durante cortos períodos de almacenamiento. Se utilizaron hembras y machos adultos tratados con extracto de hipófisis de carpa para estimular la ovulación y aumentar el volumen...... seminal. Oocitos obtenidos de la misma hembra fueron sometidos a tres sistemas de conservación: in situ (IS, mantenidos dentro de la cavidad ovárica), ex situ a temperatura ambiente (T°A) y ex situ a temperatura de refrigeración (T°R). El diámetro ovocitario (DO) y la viabilidad fueron evaluados a los 0...... larvas. Bajo los tres sistemas de conservación, DO aumentó con el tiempo, siendo mayor (p<0.001) que el control a partir de los 15 min de almacenamiento. Los mayores DO fueron observados en oocitos conservados a T°R (p<0.05). Hasta 60 min de almacenamiento, en los sistemas de conservación IS y a T°A, la...

  11. Redescripción de Hemibrycon orcesi Böhlke, 1958 y H. polyodon (Gunther, 1864 (Teleostei, Characidae, incluye clave para las especies de Hemibrycon en Ecuador

    Directory of Open Access Journals (Sweden)

    Román-Valencia, C.

    2007-12-01

    Full Text Available Redescription of Hemibrycon orcesi Böhlke, 1958 and H. polyodon (Günther, 1864 (Pisces, Characidae, with a key for the species of Hemibrycon from Ecuador. Hemibrycon orcesi is readily distinguished from its congeners by its 13 to 16 teeth on maxilla, base of caudal fin scaled, 34 to 36 scales on lateral line with pores and 17 to 18 branched anal fin rays. H. polyodon is distinguished from its congeners by simple and branched dorsal fin rays of equal length and shape of humeral spot.

  12. Redescription of Astyanax guianensis Eigenmann 1909 (Characiformes: Characidae), a poorly known and widespread fish from the Amazon, Orinoco and Guiana Shield drainages.

    Science.gov (United States)

    Marinho, Manoela M F; Camelier, Priscila; Birindelli, José L O

    2015-01-01

    Astyanax guianensis is redescribed based on the holotype, paratypes, and additional specimens from the rio Essequibo in Guyana, rio Orinoco in Venezuela and from several localities in the Amazon river basin in Brazil, Colombia and Bolivia. Astyanax guianensis is diagnosed by having five to 10 maxillary teeth, 31 to 35 pored lateral-line scales, 21 to 25 branched anal-fin rays, and a dark vertical humeral blotch followed by a clear area and then by a dark longitudinal stripe, ending before the caudal-fin rays. In addition, comments on the importance of revisionary studies on the species of the Characidae are provided. PMID:25781846

  13. Paraoxonase activity in sera from Piaractus mesopotamicus Holmberg (Characidae and Hypostomus punctatus Valenciennes (Siluridae

    Directory of Open Access Journals (Sweden)

    Vera Lucia F. Cunha Bastos

    1998-01-01

    Full Text Available A paraoxonase activity present in serum of two Brazilian fish species was consistently assayed at pH 8.5 using 7.5 mM paraoxon final concentration. The paraoxonase activity was more activated by 0.5 M NaCl in serum of Piaractus mesopotanricus Holmberg, 1887 (pacu than in serum of Hypostomus punctatus Valenciennes, 1840 (cascudo. Apparent values of K M were 3.3 x 10-3 M for cascudo and pacu paraoxonase activity in the presence of 0.5 M NaCl. Apparent maximum velocity values calculated in the presence of 0.5 M NaCl were 6.1 and 6.5 nmole/min/mL of serum for cascudo and pacu, respectively. Vmax/K M ratio values of determinations in the presence and absence of 0.5 M NaCl showed that NaCl had a more evident effect on increasing the affinity of serum paraoxonase for paraoxon in pacu serum. Young specimens of pacu showed a marked decreased paraoxonase serum activity when kept in tanks treated with 0.25 ppm methyl-parathion.

  14. Neotropical Monogenoidea. 24. Rhinoxenus bulbovaginatus n. sp. (Dactylogyridae, Ancyrocephalinae from the nasal cavity of Salminus maxillosus (Osteichthyes, Characidae from the Rio Paraná, Paraná, Brazil

    Directory of Open Access Journals (Sweden)

    Walter A. Boeger

    1995-12-01

    Full Text Available Rhinoxenus bulbovaginatus n. sp. is described from the nose of Salminus maxillosus (Characidae collected in the basin of the rio Paraná, near the city of Porto Rico, state of Paraná, Brazil. The new species can be differentiated from the other three species in the genus by the morphology of the copulatory complex, vagina, and ventral anchor. The sister group relationship of the known species of Rhinoxenus was determined using techniques of Phylogenetic Systematics (Cladism. The resulting cladogram (C.I.=100% indicates that the new species is most closely related to R. piranhus Kritsky, Boeger and Thatcher, 1988. The other two species of the genus, R. arietinus Kritsky, Boeger and Thatcher, 1988 and R. nyttus Kritsky, Boeger and Thatcher, 1988, both parasites of Anostomidae fishes, have a paraphyletic position in the cladogram, suggesting that the origin of at least one of them can not be associated to cospeciation.

  15. The life cycle of Neocladocystis intestinalis (Vaz, 1932) (Digenea: Cryptogonimidae), in Aylacostoma chloroticum (Prosobranchia: Thiaridae), and Salminus brasiliensis (Characiformes: Characidae), in Argentina.

    Science.gov (United States)

    Quintana, Manuel G; Ostrowski de Núñez, Margarita

    2016-07-01

    The life cycle of Neocladocystis intestinalis (Vaz, 1932) was resolved experimentally. The prosobranchiate snail Aylacostoma chloroticum Hylton Scott (Thiaridae) collected in the Yacyretá Dam, Province of Misiones, Argentina, was found naturally infected with cercariae that possessed pigmented eye spots, 7 pairs of penetration glands, 12 pairs of flame cells, and a V-shaped, or Y-shaped excretory vesicle with very short stem. The cercariae developed in oval cysts, which were found on fin rays, and under scales of naturally and experimentally exposed tetragonopterid fish species and of experimentally exposed poecilid and prochilodont fish species. Adults were obtained experimentally from juvenile Salminus brasiliensis (Characidae), bred in captivity, and infected with metacercariae from albino Gymnocorymbus ternetzi (Tetragonopteridae), which had been exposed to emerging cercariae. PMID:26984207

  16. Neotropical Monogenoidea. 56. New species of Anacanthorus (Dactylogyridae) from the gills of matrinchã, Brycon orthotaenia (Characiformes: Characidae), in the Rio São Francisco, Brazil.

    Science.gov (United States)

    Monteiro, Cassandra M; Kritsky, Delane C; Brasil-Sato, Marilia C

    2010-09-01

    Anacanthorus franciscanus sp. n. and Anacanthorus brevicirrus sp. n. (Dactylogyridae) are described from the gills of the matrinchã, Brycon orthotaenia Günther (Characidae), from the Rio São Francisco in Brazil. Anacanthorusfranciscanus most closely resembles Anacanthorus e[egans and A. kruidenieri from the matrinchõ, Brycon melanopterus, of the Amazon River Basin. It differs from these species in part by having the bulbous proximal end of the hook shank with two translucent regions. Anacanthorus brevicirrus resembles A. franciscanus, A. kruidenieri and A. elegans but is differentiated from these species by its short straight male copulatory organ and by having one translucent region in the bulbous base of the hook shank. PMID:20941907

  17. Myxobolus sp. (Myxozoa in the circulating blood of Colossoma macropomum (Osteichthyes, Characidae Myxobolus sp. (Myxozoa no sangue circulante de Colossoma macropomum (Osteichthyes, Characidae

    Directory of Open Access Journals (Sweden)

    Patricia Oliveira Maciel

    2011-03-01

    Full Text Available Myxosporea parasitize many organs in fresh and saltwater fish. Species of the genus Myxobolus parasitizing the gills and other organs of the tambaqui Colossoma macropomum have been described. In the present study, blood smears were made from juvenile tambaqui and were stained with May Grunwald-Giemsa-Wright in order to identify myxozoan parasites. Out of a total of 36 fish examined, one specimen (2.7% that was reared in a cage presented spores that were identified as M. colossomatis, whereas fish kept in 250 L tanks showed prevalence of 5.5%. This is the first report of M. colossomatis in the blood of farmed tambaqui in the Amazon region. These results indicate that myxozoan parasites should also be investigated in fish blood smears. Some myxosporean species may cause diseases in fish, and these species need to be identified so that adequate preventive sanitary control can be instituted.Mixosporídeos parasitam diversos órgãos de peixes de água doce e salgada, tendo sido descrita espécie do gênero Myxobolus parasitando brânquias e outros órgãos de tambaqui Colossoma macropomum. No presente trabalho, extensões sanguíneas de juvenis de tambaquis foram confeccionadas e coradas com May Grunwald-Giemsa-Wright para identificação de parasitos myxozoários. Do total de 36 peixes examinados, um espécime (2,7% cultivado em tanque-rede apresentou esporos identificados como M. colossomatis, enquanto os peixes mantidos em tanques com 250 L apresentaram prevalência de 5,5%. Esse é o primeiro registro de M. colossomatis no sangue de tambaqui cultivado na Amazônia. Esses resultados indicam que parasitos Myxozoa devem ser também investigados em extensões sanguíneas. Algumas espécies de mixosporídeos podem causar doença em peixes, sendo necessária a identificação da espécie para um adequado manejo sanitário preventivo.

  18. Spatial and seasonal changes in the diet of Oligosarcus hepsetus (Characiformes, Characidae) in a Brazilian Reservoir Variações espaciais e sazonais na dieta de Oligosarcus hepsetus (Characiformes, Characidae) em um reservatório brasileiro

    OpenAIRE

    F.G. Araújo; C. C Andrade; Santos, R. N.; A. F. G. N Santos; L. N Santos

    2005-01-01

    We assessed spatial and seasonal changes in the diet of Oligosarcus hepsetus in order to describe the strategy developed by this species that allows their very high abundance in Lajes reservoir, Rio de Janeiro, Brazil. Fish samplings were carried out using gill nets, deployed during ca. 12 and 24 hours, between April 2001 and May 2002. A total of 289 individuals were examined, of which 97 showed gut contents. We used the index of relative importance (IRI) to compare probable dietary shifts, a...

  19. Composición proximal, ácidos grasos y características fisicoquímicas de aceite de harina artesanal de caribe (Serrasalmus rhombeus Pisces: Characidae proveniente de Caicara del Orinoco-Venezuela

    Directory of Open Access Journals (Sweden)

    Granados, Ángel

    2006-12-01

    Full Text Available Caribe (Serrasalmus rhoembeus is a Characidae fish that lives in the basins of the Orinoco and Amazon rivers. It is an  underutilized specie although in the last years has been marketed in the form of of a meal which is obtained through a handmade process but without information about its chemical composition. This research was conducted to evaluate the proximate composition of commercial caribe meal, the fatty acids profile and some physicochemical properties of its lipidic extract. Three aleatory samples of meal were selected in Caicara del Orinoco shops, Bolívar state –Venezuela. Moisture (6.00 ± 0.45 %, crude protein (N x 6.25: 52.78 ± 2.36 %, crude fat (22.47 ± 1.08 % and total ash (24.58 ± 3.12 % were determined in each sample. The fat was extracted with nhexane and it was analyzed for free fatty acids (5.66 ± 0.15 % as oleic acid, peroxide value (23.50 ± 1.02 meq O2/kg, iodine value (152.2 ± 0.5, saponification value (186.5 ± 0.3 mg KOH/g and unsaponifiable matter (2.3 ± 0.4 g/kg. The fatty acids profile showed an unsaturated acids/ saturated acids ratio of 5.62 with 59.9 % of monounsaturated fatty acids and 25.0 % of polyunsaturated fatty acids. Caribe meal is an important source of nutrients and a potential raw material for human food.El caribe (Serrasalmus rhombeus es un pez de la familia Characidae de la cuenca de los ríos Orinoco y Amazonas, de poco valor comercial debido a su estructura espinosa y a creencias relacionadas con su hábito alimentario, pero que en años recientes los pobladores de las zonas donde existe naturalmente le han dado utilidad mediante la obtención artesanal de una harina que es expendida para consumo humano; sin embargo, no se dispone de información referente a su composición química. El objetivo de esta investigación fue evaluar la composición química proximal del producto comercializado como harina de caribe y algunas características fisicoquímicas del extracto lipídico de la misma

  20. New species of Moenkhausia Eigenmann, 1903 (Characiformes: Characidae with comments on the Moenkhausia oligolepis species complex

    Directory of Open Access Journals (Sweden)

    Ricardo C. Benine

    2009-06-01

    Full Text Available A new species of Moenkhausia is described from tributaries of the rio Paraguay, Brazil. The new species is diagnosed from congeners by characters related to body coloration, the number of lateral line scales, the degree of poring of the lateral line, and number of scales rows above and below the lateral line. Molecular analyses using partial sequences of the mitochondrial gene Cytochrome Oxidase I from specimens of the new species and specimens belonging to morphologically similar species demonstrated that the new species is easily differentiated by their high genetic distance and by their position in the phylogenetic hypothesis obtained through the Maximum Parsimony methodology. The analyses of three samples of M. oligolepis also revealed that they have high genetic distances and belong to different monophyletic groups suggesting that this species corresponds to a species complex rather than a single species.Uma nova espécie de Moenkhausia é descrita de tributários do rio Paraguai, Brasil. Essa nova espécie é diagnosticada de seus congêneres por caracteres relacionados ao padrão de colorido do corpo, número de escamas da linha lateral, grau de desenvolvimento dos poros sensoriais na linha lateral e número de séries de escamas acima e abaixo da linha lateral. Um análise molecular usando sequências parciais do gene mitocondrial Citocromo Oxidase I de espécimes representativos da nova espécie e espécimes pertencentes a espécies morfologicamente similares demonstrou que a nova espécie é facilmente diferenciada por sua elevada distância genética e por sua posição na hipótese filogenética obtida pelo método de máxima parcimônia. A análise de três amostras de M. oligolepis também revelou que estas apresentam distâncias genéticas elevadas e pertencem a grupos monofiléticos distintos, sugerindo que esta espécie corresponda a um complexo de espécies e não uma única espécie.

  1. Cytogenetic data on Astyanax jacuhiensis (Characidae in the lago Guaíba and tributaries, Brazil

    Directory of Open Access Journals (Sweden)

    Rosiley B. Pacheco

    2010-01-01

    entre os homólogos. O bandamento C revelou a presença de bandas discretas de heterocromatina na região pericentromérica da maioria dos cromossomos, além de algumas bandas mais evidentes intersticiais, bem como na região terminal dos braços curtos do par 8. A associação de BC+CMA3 evidenciou marcações fluorescentes mais discretas em diferentes cromossomos e uma forte marcação terminal no par 8, confirmando vários sítios de heterocromatina GC-rica nessa espécie. Nossos resultados fornecem a primeira descrição do cariótipo de Astyanax jacuhiensis, apresentando semelhanças em relação ao cariótipo de diferentes populações de A. altiparanae e A. bimaculatus, indicando que as características cromossômicas são muito semelhantes para estas três espécies.

  2. Micronucleus frequencies in Astyanax bimaculatus (Characidae treated with cyclophosphamide or vinblastine sulfate

    Directory of Open Access Journals (Sweden)

    F.E. Matsumoto

    2000-06-01

    Full Text Available Two known mutagenic drugs, cyclophosphamide and vinblastine sulfate, were tested using the micronucleus test in the native fish species, Astyanax bimaculatus, in order to determine which of these drugs and the doses which would be the most adequate for use as positive controls in this species. This Brazilian fish species was chosen because few toxicity studies have used native fish species and this particular species is widely consumed in various regions of Brazil. Three thousand erythrocytes per specimen were scored. Doses of 16 and 8 mg/kg body weight of cyclophosphamide and vinblastine sulfate, respectively, were the most effective in causing micronuclei. Cyclophosphamide was the most mutagenic of the two drugs and is recommended for use as a positive control in A. bimaculatus.Duas drogas reconhecidas como mutagênicas, ciclofosfamida e vimblastina sulfato, foram avaliadas usando o teste do micronúcleo em uma espécie de peixe nativa, Astyanax bimaculatus, para detectar que droga e quais doses são as mais adequadas para serem usadas como controles positivos para esta espécie. Esta espécie de peixe brasileira foi escolhida devido à escassez de estudos toxicológicos com espécies de peixes nativos e também porque ela é amplamente consumida em algumas regiões do Brasil. Um total de 3000 eritrócitos por espécimen foram contados. As doses de 16 e 8 mg/kg de peso corporal de ciclofosfamida e de vimblastina sulfato, respectivamente, foram as mais efetivas na indução de micronúcleos. A ciclofosfamida mostrou ser o melhor agente mutagênico para ser usado como um controle positivo para Astyanax bimaculatus.

  3. A pesca comercial na bacia do rio Madeira no estado de Rondônia, Amazônia brasileira The Commercial fisheries of the Madeira river basin in the Rondônia state, brazilian Amazon

    Directory of Open Access Journals (Sweden)

    Carolina Rodrigues da Costa Doria

    2012-03-01

    Full Text Available Este estudo caracteriza quali e quantitativamente a atividade pesqueira comercial na bacia do rio Madeira, afluente do rio Amazonas, no trecho entre Guajará-Mirim e Porto Velho, estado de Rondônia. No período de janeiro a dezembro/2004, foram registrados 460 t, correspondendo 935 viagens. A análise dos dados oriundos do monitoramento dos desembarques demonstrou que a pesca na região tem caráter artesanal de pequena escala, destacando a maior participação das canoas motorizadas (131 unidades do que barcos pesqueiros (45 unidades; capacidade média: 3.000kg na frota pesqueira. Os peixes migradores jaraqui (Semaprochilodus spp., dourada (Brachyplatystoma rousseauxii, sardinha (Triportheus spp., jatuarana/matrinxã (Brycon amazonicus e B. cephalus, curimatã (Prochilodus nigricans e filhote (Brachyplatystoma filamentosum se destacaram na composição das espécies desembarcadas. As informações técnicas geradas são importantes para subsidiar ações de ordenamento pesqueiro, bem como para avaliar futuras variações que possam ocorrer na atividade frente aos impactos dos empreendimentos hidrelétricos em construção na região.This study presents qualitative and quantitative information about commercial fishery in the basin of the Madeira River, tributary of the Amazon River, describing the fishing activity in the segment between Guajará-Mirim and Porto Velho, in Rondônia State. From January to December/2004, 219 fishermen and 935 trips were registered, corresponding to the capture of 460 t of fish. Data from fish landings demonstrate that fisheries in the region are small-scaled and point to a higher participation of small motorized canoes (130 units than of fishing boats (45 units; average capacity: 3000 kg in the fishing fleet. Migratory species like jaraqui (Semaprochilodus spp., dourada (Brachyplatystoma rousseauxii, sardinha (Triportheus spp., jatuarana/matrinxã (Brycon amazonicus e B. cephalus, curimatã (Prochilodus nigricans

  4. Nucleotide diversity of Hemigrammus cf. marginatus (Characiformes, Characidae in the upper Paraná river floodplain - doi: 10.4025/actascibiolsci.v34i3.6669

    Directory of Open Access Journals (Sweden)

    Carla Simone Pavanelli

    2012-06-01

    Full Text Available Characidae is the largest and more diversified family from Characiformes and presents several classification problems, with several genera currently allocated as incertae sedis, such as the genus Hemigrammus. The upper Paraná river floodplain is an environment with high fish diversity. There is at least one species of Hemigrammus, however there are divergences among some authors about the number and the identification of the species from this genus. Therefore the goal of this study was to characterize, using a molecular approach, individuals of Hemigrammus from the upper Paraná river floodplain and to compare them with individuals from the type locality of Hemigrammus marginatus, since this is the only species distributed in this floodplain. For this, the DNA was extracted and a partial region from the mitochondrial genes ATPase 6 and ATPase 8 were amplified and sequenced. The results evidenced the existence of two species of Hemigrammus in the floodplain, although impossible to be distinguished only through morphological traits. High nucleotide diversity among individuals from the upper Paraná river in relation to those from the type locality was also observed, indicating that both species of Hemigrammus present in the upper Paraná river floodplain are not Hemigrammus marginatus. 

  5. Stress responses of juvenile matrinxã (Brycon amazonicus after transport in a closed system under different loading densities Respostas de estresse de matrinxã (Brycon amazonicus juvenil após transporte em sistema fechado sob diferentes densidades de carga

    Directory of Open Access Journals (Sweden)

    Janessa Sampaio de Abreu

    2008-08-01

    , a temperatura esteve em torno de 32°C, pH 6,5-6,78, a amônia total foi de 1,09-1,7mg L-1, a amônia não-ionizada foi de 3,58-9,33 x 10³mg L-1 e alcalinidade 134-165mg CaCO3 L-1. O cortisol plasmático e a glicose sanguínea aumentaram após o transporte nos peixes em todas as densidades ensaiadas, voltando aos valores controle 24h depois. Os valores de osmolaridade não mudaram logo após o transporte, mas aumentaram 24h depois de modo igual em todas as densidades. O cloreto plasmático diminuiu na chegada, de modo inversamente proporcional à densidade de carga. O hematócrito diminuiu 24h depois da chegada dos peixes, em todas as densidades testadas, mas não houve diferença no número de eritrócitos. Não houve mortalidade até uma semana após o transporte. O matrinxã mostrou ser uma espécie tolerante a altas densidades de carga em embalagens para transporte além de suportar baixos níveis de oxigênio na água.

  6. Alterações hematológicas e histopatológicas em pacu, Piaractus mesopotamicus Holmberg, 1887 (Osteichthyes, Characidae, Hematological and histopathological alteration in pacu Piaractus mesopotamicus Holmberg, 1887 (Osteichthyes, Characidae after treatment with copper sulphate (CuSO4

    Directory of Open Access Journals (Sweden)

    Flávio Ruas de Moraes

    2002-05-01

    Full Text Available Este trabalho avaliou os valores hematológicos e glicêmicos e histopatologia de Piaractus mesopotamicus (Osteichthyes, Characidae infectados com Monogenea Anacanthorus penilabiatus Boeger, Husak & Martins, 1995 (Dactylogyridae após tratamento com 0,50 mg/L e 1,00 mg/L de sulfato de cobre (CuSO4. A eficiência da droga sobre as infecções com Monogenea foi observada no primeiro dia após administração mas não após 8, 15 ou 30 dias do tratamento. As análises histopatológicas mostraram hiperplasia do epitélio e alterações circulatórias nas brânquias. No primeiro dia após tratamento, foram observadas alterações significativas (P4 mostraram redução da taxa de hemoglobina e do percentual de neutrófilos. No 8o dia do tratamento a dose de 1,00 mg/L provocou aumento da glicemia mas redução no percentual de linfócitos quando comparada com 0,50 mg/L. No 15o dia após tratamento com 1,00 mg/L os valores médios do volume corpuscular médio e o percentual de células granulocíticas especiais (C.G.E. decresceram mas o número de leucócitos totais aumentaram. No 30o dia após tratamento com 0,50 mg/L de sulfato de cobre houve aumento de C.G.E. e no tratamento com 1,00 mg/L o aumento foi de linfócitos.This paper evaluated the haematological and glycaemic parameters in Piaractus mesopotamicus (Osteichthyes, Characidae infected with Monogenea Anacanthorus penilabiatus Boeger, Husak & Martins, 1995 (Dactylogyridae after treatment with 0.50 mg/L and 1.00 mg/L of copper sulphate (CuSO4. The efficacy of the CuSO4 was observed in the first day after administration but not after eight, fifteen or thirty days. The histopathological analyses showed hyperplasia of the epithelium and circulatory changes in the gills. In the first day after treatment significant changes (Pth day. Fifteen days after 1.00 mg/L treatment, values of mean corpuscular volume (MCV and special granulocitic cells (S.G.C. percentage decreased. Nevertheless, increase of

  7. Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae

    Directory of Open Access Journals (Sweden)

    Stanley H. Weitzman

    2005-09-01

    , the Glandulocaudinae, with possible close relationships to some other Clade A inseminating characids that lack caudal-fin organs. The remaining tribes of the former Glandulocaudinae are here included in the subfamily name Stevardiinae. Many species of these two subfamilies and some of the other inseminating Clade A characids have modified sperm cells with an elongate "binding"cytoplasmic collar and mitochondria located along and beyond the nucleus. This may be an indication of a relationship at a unique level within Clade A characids. However, further research on the derived nature and homology of the sperm cells within inseminating Clade A characids and of the caudal organs of the tribes of the Stevardiinae must be undertaken in order to utilize sperm cell features as characters for studying phylogeny. Finally, the kinds of secretory cells and gross anatomical structures in the tail organs of the stevardiine tribes need detailed research in order to better present hypotheses of phylogeny for the tribes of the Stevardiinae as well as all inseminating Clade A characids.Uma espécie com inseminação interna da família Characidae, Bryconadenos tanaothoros, de tributários das bacias do alto Tapajós e alto Xingu, Estado de Mato Grosso, Brasil é descrita como espécie nova e como espécie-tipo de um novo gênero. Esta nova espécie e o gênero são caracterizados pela posse de um órgão glandular na região anterior da nadadeira anal dos machos sexualmente maduros, dentes curvos na maxila inferior e um tipo de reprodução por inseminação. A hipótese mais viável indica que este novo gênero é mais intimamente relacionado a Attonitus, um gênero com três espécies inseminadoras do Peru. Sugere-se que Bryconadenos e Attonitus são relacionados a certas espécies inseminadoras mas não descritas de caracídeos de relações incertas, semelhantes em alguns aspectos a espécies do glandulocaudíneo Planaltina e as espécies inseminadoras de Knodus. Estas e alguns

  8. The food spectrum of the cardinal - tetra (Paracheirodon axelrodi, Characidae in its natural habitat Estratégias alimentares do cardinal-tetra (Paracheirodon axelrodi, Characidae em seu ambiente natural

    Directory of Open Access Journals (Sweden)

    Ilse Walker

    2004-01-01

    Full Text Available The cardinal tetra (Paracheirodon axelrodi is the most intensively commercialized ornamental fish from the Rio Negro Basin (Amazonas State, Brasil. Analysis of the stomach and gut contents of fish caught in their natural habitats show conclusively that the cardinal is essentially a predator, feeding on the mesofauna that adheres to submerged litter, roots and waterplants. Microcrustacea and chironomid larvae (Diptera were the most frequently ingested prey, while algae intake was relatively infrequent. It is argued that the relatively small size of the cardinals captured in their natural habitat is due to the annual migrations imposed by the inundation cycles, rather than to resource limitation, because it is known from earlier investigations of similar habitats, that these plant substrates are densely colonized by the aquatic mesofauna. Cardinals raised in captivity are larger and have higher rates of growth.O cardinal (Paracheirodon axelrodi é o peixe ornamental comercializado com maior intensidade na Bacia do Rio Negro (Estado do Amazonas, Brasil. Análise do conteúdo estomacal de peixes capturados nos seus habitats naturais mostra, que o cardinal é essencialmente um predador, alimentando-se da mesofauna que está colonizando a liteira submersa, arbustos submersos, raízes flutuantes e plantas aquáticas. As presas principais são microcrustáceos e larvas de quironomídeos (Chironomidae, Diptera, enquanto ingestão de algas é pouco freqüente. Considera-se que o tamanho relativamente pequeno de cardinais capturados nos ambientes naturais é devido as migrações anuais que acompanham os ciclos anuais de enchente e vazante, e não à falta de recursos; já que é conhecido de ambientes parecidos de outros rios da região, que estes substratos aquáticos são densamente colonizados pela mesofauna. Cardinais criados em cativeiros tem taxas de crescimento mais altas e são de tamanho maiores.

  9. Morfologia do trato digestório e dieta de larvas de Bryconamericus aff. iheringii (Boulenger, 1887 (Osteichthyes, Characidae = Morphology of Digestive tract and diet of Bryconamericus aff. iheringii larvae (Boulenger, 1887 (Osteichthyes, Characidae

    Directory of Open Access Journals (Sweden)

    Renato Ziliani Borges

    2006-01-01

    Full Text Available Este trabalho teve como objetivo analisar alguns aspectos da alimentação de larvas de Bryconamericus aff. iheringii, capturadas nos meses de julho e novembro de 2001, nas regiões limnética e litorânea do reservatório de Santa Maria, rio Piquiri, Estado do Paraná. As larvas apresentaram boca subterminal durante todo o seu desenvolvimento. O tubo digestório se diferenciou em estômago e intestino apenas no estágio de pós-flexão. As larvas consumiram, principalmente, algas e microcrustáceos, o que permitiu caracterizá-las como planctófagas. A intensa modificação morfológica no trato digestório nos indivíduos em pósflexão coincidiu com o aumento na abundância de algas em relação aos itens de origemanimal; porém, de forma geral, a ocorrência aumentou para todos os itens. A análise do grau de digestão dos itens alimentares sugeriu que indivíduos em pré-flexão alimentaram-se, possivelmente, durante o dia, e os mais desenvolvidos, durante o entardecer e no períodonoturno.The aim of this study was to analyze some feeding treats of Bryconamericus aff. iheringii larvae, sampled in both the limnetic and littoral regions of the Piquiri River, in Santa Maria reservoir, between July and November 2001. The larvae presented sub-terminal mouth in larval period. The digestive tract differentiated in terms of stomach and intestine only in the postflexion larvae. The larvae fed mainly on algae and microcrustacea allowing to characterize them as planktivorous. The intense morphologic shift in the digestive tract in the postflexion larvae coincided with an increase in the abundance of algae in relation to animals items; however, in general, all the items had their occurrence increased. Analysis of the digestion stage suggested that preflexion larvae, possibly, fed themselves during the day, and those more developed, at dusk and night.

  10. Can weight/length relationship predict size at first maturity? A case study with two species of Characidae

    Directory of Open Access Journals (Sweden)

    Nelson F. Fontoura

    2010-01-01

    Full Text Available A weight/length relationship was established for Astyanax jacuhiensis (Cope, 1894 (n = 370 and Cheirodon ibicuhiensis Eigenmann, 1915 (n = 701, from samples taken monthly in Fortaleza Lagoon, Cidreira, Rio Grande do Sul, from December 1991 through November 1992. Both species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function. For C. ibicuhiensis, this change in the growth pattern occurred at 2.948 cm standard length (SL, close to published sizes for the attainment of female maturity. The change in the growth pattern of A. jacuhiensis (SL = 3.481 cm was below the predicted size at first maturity, and merits further investigation. Although not conclusive, our data suggest that a complex growth pattern is frequent in nature, and perhaps is not usually identified because trends are obscured by natural variability. Despite the increased complexity resulting from the application of a more-complex equation, the identification of a change in the growth pattern could indicate important aspects of fish biology, including the attainment of sexual maturity.A relação peso/comprimento para Astyanax jacuhiensis (Cope, 1894 (n = 370 e Cheirodon ibicuhiensis Eigenmann, 1915 (n = 701 foi estimada a partir de amostras mensais efetuadas na lagoa Fortaleza, Cidreira, Rio Grande do Sul (dezembro de 1991 a novembro de 1992. As espécies analisadas apresentaram padrão de crescimento alométrico polifásico, sendo cada fase descrita por uma equação potência independente controlada por uma função interruptora. Para C. ibicuhiensis foi identificada uma modificação no padrão de crescimento com 2,948 cm de comprimento padrão (CP, valor próximo à dados publicados relativos ao início da maturação sexual. A alteração observada no padrão de crescimento de A. jacuhiensis (CP = 3,481 cm encontra-se abaixo do tamanho previsto para a primeira maturação e sugere a necessidade de

  11. Diet of Lontra longicaudis (Carnivora: Mustelidae in a pool system in Atlantic Forest of Minas Gerais State, southeastern Brazil=Dieta de Lontra longicaudis (Carnivora: Mustelidae em um sistema de poções na Floresta Atlântica do Estado de Minas Gerais, sudeste do Brasil

    Directory of Open Access Journals (Sweden)

    Fernando Marques Quintela

    2012-10-01

    Full Text Available The present study aimed to investigate the feeding habits of Lontra longicaudis in a pool system within the Private Reserve of Natural Patrimony (RPPN Usina Maurício, located in Paraíba do Sul river basin, Atlantic Forest of southeastern Minas Gerais State. The diet composition was determined based on the identification of items present in 212 scats sampled between July 2008 and October 2009 in a 4.1 km stretch of the pool system. The found items and its respective percentages of occurrence were: mollusks (0.5%, insects (16.5%, spiders (1.4%, crustaceans (3.3%, fish (96.7%, amphibians (0.9%, snakes (3.8%, birds (2.8%, mammals (8.5% and fruits (0.5%. Among fish, the identified families and respective percentages of occurrence were: Loricariidae (65.4%, Pimelodidae (42.9% Cichlidae (22%, Characidae (7.3%, Erythrinidae (3.9%, Synbranchidae (2.4%, Anostomidae (2%. Therefore fish make up the most consumed item in the study area, with the predominance of benthic siluriformes (families Loricariidae and Pimelodidae. O presente estudo teve como objetivo investigar os hábitos alimentares de Lontra longicaudis em um sistema de poções na Reserva Particular do Patrimônio Natural – RPPN Usina Maurício, localizada na bacia do rio Paraíba do Sul, Mata Atlântica do Sudeste do Estado de Minas Gerais. A composição da dieta foi determinada com base na identificação de itens presentes em 212 amostras de fezes coletadas entre julho de 2008 e outubro de 2009 em um trecho de 4,1 km de um sistema de poções. Os itens alimentares encontrados e suas respectivas porcentagens de ocorrência foram: moluscos (0,5%, insetos (16,5%, aranhas (1,4%, crustáceos (3,3%, peixes (96,7%, anfíbios (0,9%, serpentes (3,8%, aves (2,8%, mamíferos (8,5%, frutos (0,5%. Dentre os peixes, famílias identificadas e suas respectivas porcentagens de ocorrência foram: Loricariidae (65,4%, Pimelodidae (42,9% Cichlidae (22%, Characidae (7,3%, Erythrinidae (3,9%, Synbranchidae (2

  12. DISKRIMINACIJA NA TRGU DELA NA PODLAGI SPOLA

    OpenAIRE

    Prnaver, Polona

    2012-01-01

    Boj proti diskriminaciji je danes velik izziv za države, katerih temelji slonijo na načelih svobode, demokracije in spoštovanja človekovih pravic. Zato morajo v svoj sistem sprejeti vse potrebne ukrepe za boj proti vsem oblikam diskriminacije, predvsem kadar te zadevajo zaposlitev in trg dela. Vendar je problem uravnoteženega zastopanja obeh spolov na trgu dela še vedno zelo prisoten. Diskriminacija glede na spola na trgu dela predstavlja celostno zakonsko urejeno področje, ki se navezuje ...

  13. Coeficientes de digestibilidad aparente de harina de pescado peruana y maíz amarillo duro para Colossoma macropomum (Actinopterygii, Characidae)

    OpenAIRE

    Felix Walter Gutierrez; Javier Zaldívar; Guadalupe Contreras

    2008-01-01

    Los Coeficientes de Digestibilidad Aparente (CDA) de la materia seca (MS), proteína cruda (PC), lípido crudo(LC) y energía bruta (EB) de los ingredientes alimenticios harina de pescado peruana (HPP) y de maíz amarillo duro (MAD) fueron determinados en juveniles de Colossoma macropomum (150,0 ± 25,5 g). En el experimento la dieta de referencia se mezcló con cada uno de los ingredientes prueba en una relación de 70:30. El óxido crómico se usó como indicador inerte. La dieta de referencia y las ...

  14. Redescription of Odontostilbe pulchra (Gill, 1858 (Teleostei: Characidae: Cheirodontinae, and description of two new species from the río Orinoco basin

    Directory of Open Access Journals (Sweden)

    Cristina M. Bührnheim

    2007-03-01

    Full Text Available Odontostilbe pulchra, previously considered species inquirenda in Cheirodontinae and doubtfully assigned from the río Orinoco basin, is redescribed with the rediscovery of two syntypes. Originally described to the Island of Trinidad, O. pulchra is widespread in Venezuela, the río Orinoco basin, in smaller coastal drainages of northern South America, in the Lake Valencia system, and río Essequibo basin. A punctual occurrence in the upper rio Negro, near southernmost headwaters of the río Orinoco, extends its distribution to the Amazon basin. Additionally, two new species of Odontostilbe from the río Orinoco basin are described.Odontostilbe pulchra, anteriormente considerada como species inquirenda em Cheirodontinae e registrada com dúvidas para a bacia do río Orinoco, é redescrita com a redescoberta de dois síntipos. Descrita originalmente para a ilha de Trinidad, O. pulchra apresenta-se largamente distribuída na Venezuela, incluindo a bacia do río Orinoco, pequenas bacias costeiras do norte da América do Sul, no sistema do lago Valencia e bacia do río Essequibo. Uma ocorrência pontual na região superior do rio Negro, próximo às cabeceiras do río Orinoco, estende sua distribuição para a bacia Amazônica. Adicionalmente, são descritas duas novas espécies de Odontostilbe da bacia do Orinoco.

  15. The NA49 experiment

    CERN Multimedia

    Patrice Loiez

    2000-01-01

    The two spokespersons of NA49, Reinhard Stock, Frankfurt (1991-1996), sitting and standing, Peter Seyboth, (1997-present), MPI Munich, in the target area of NA49 in front of the first superconducting vertex magnetone of the TPCs. NA49 is one of the seven experiments (NA44, NA45, NA49, NA50, NA52, WA97/NA57 and WA98) involved in CERN's Heavy Ion programme which provided evidence for the existence of a new state of matte, the quark-gluon plasma. In this state, quarks, instead of being bound up into more complex particles such as protons and neutrons, are liberated and roam freely. Theory predicts that this state must have existed at about 10 microseconds after the Big Bang, before the formation of matter as we know it today.

  16. Host-parasite interactions between the piranha Pygocentrus nattereri (Characiformes: Characidae and isopods and branchiurans (Crustacea in the rio Araguaia basin, Brazil

    Directory of Open Access Journals (Sweden)

    Lucélia Nobre Carvalho

    2004-06-01

    Full Text Available In the tropics, studies on the ecology of host-parasite interactions are incipient and generally related to taxonomic aspects. The main objective of the present work was to analyze ecological aspects and identify the metazoan fauna of ectoparasites that infest the piranha, Pygocentrus nattereri. In May 2002, field samples were collected in the rio Araguaia basin, State of Goiás (Brazil. A total of 252 individuals of P. nattereri were caught with fishhooks and 32.14% were infested with ectoparasite crustaceans. The recorded ectoparasites were branchiurans, Argulus sp. and Dolops carvalhoi and the isopods Braga patagonica, Anphira branchialis and Asotana sp. The prevalence and mean intensity of branchiurans (16.6% and 1.5, respectively and isopods (15.5% and 1.0, respectively were similar. Isopods were observed in the gills of the host; branchiurans were more frequent where the skin was thinner, and facilitated attachment and feeding. The ventral area, the base of the pectoral fin and the gular area were the most infested areas. The correlations between the standard length of the host and the variables intensity and prevalence of crustaceans parasitism, were significant only for branchiurans (rs = 0.2397, p = 0.0001; chi2 = 7.97; C = 0.19. These results suggest that both feeding sites and body size probably play an important role in the distribution and abundance of ectoparasites.Nos trópicos, os estudos sobre a ecologia de interações parasito-hospedeiro são incipientes, sendo a maioria de cunho taxonômico. O principal objetivo do presente estudo foi identificar a fauna metazoária de ectoparasitas e analisar aspectos ecológicos da piranha Pygocentrus nattereri. As coletas foram realizadas em maio de 2002, na bacia do rio Araguaia, GO. Com o auxílio de linha e anzol foram capturados 252 exemplares de P. nattereri, dos quais 32,14% estavam infestados por crustáceos ectoparasitos. As espécies de ectoparasitas registradas foram Argulus sp

  17. Population structure and reproduction of Deuterodon langei travassos, 1957 (Teleostei, Characidae in a neotropical stream basin from the Atlantic Forest, Southern Brazil

    Directory of Open Access Journals (Sweden)

    Jean Ricardo Simões Vitule

    2008-12-01

    Full Text Available Aspects of the biology of D. langei were studied at different sites along a longitudinal gradient formed by the Ribeirão stream basin, a Neotropical stream of the Atlantic Forest, southern Brazil. Differences were observed in population structure and reproduction along the longitudinal gradient and during the study period. Juvenile fishes occurred in high abundance, mainly in the downstream site after the rainy months. Adults occurred mainly in the intermediate and upstream sites. During their life cycle, adults optimise their reproductive strategy by concentrating the reproductive period with total spawn in a short time interval before summer rains dragged the juvenile, larval forms and/or eggs downstream. The downstream site was characterized by a wide range of microhabitats (ex. submerged grass and shallow flooded area. Thus, the species used different portions of the basin in distinct stages of its life, being ecologically adapted to variation patterns in its temporal and physical environments.Aspectos da biologia de D. langei foram estudados em diferentes locais da bacia do rio Ribeirão, um riacho litorâneo da Floresta Atlântica do sudeste do Brasil. Foram observadas diferenças na estrutura da população e na reprodução, ao longo do gradiente longitudinal da bacia e do período de estudo. Os peixes juvenis ocorreram em grande abundância, principalmente no trecho a jusante da bacia, após os meses mais chuvosos. Adultos ocorreram principalmente nos trechos intermediários e a montante. Não houve diferença significativa na relação sexual entre os locais amostrados, estações do ano, meses e classes de comprimento. O comprimento médio de primeira maturação (L50 foi o mesmo para machos e fêmeas, entre 6,1 e 7,0 cm de comprimento total (Lt. O período reprodutivo foi curto (entre o final da primavera e início do verão, antes dos meses mais chuvosos, com desova total. O Índice de Atividade Reprodutiva (IAR indicou que D

  18. Knodus shinahota (Characiformes: Characidae a new species from the río Shinahota, río Chapare basin (Mamoré system, Bolivia

    Directory of Open Access Journals (Sweden)

    Katiane M. Ferreira

    2007-03-01

    Full Text Available Knodus shinahota, new species, is described from río Shinahota, a tributary of the upper rio Mamoré basin, Província de Tiraque, Cochabamba State, Bolivia. The new species can be distinguished from all congeners except K. chapadae and K. geryi by having six rows of scales between the lateral line and the dorsal-fin origin (vs 4 or 5 rows of scales in the other species. Knodus shinahota differs from K. chapadae by possessing more rows of scales between the lateral line and the pelvic-fin origin (5 vs 3½ or 4, respectively and more lateral line scales (38-41 vs 36-38, respectively. It differs from K. geryi by possessing more rows of scales between the lateral-line and the pelvic-fin origin (5 vs 4, respectively; fewer branched anal-fin rays (17-20 vs 15-17, respectively, and by lacking the two symmetric, large, dark, blotches on the basal portions of the caudal-fin lobes that characterize K. geryi.Knodus shinahota, espécie nova, é descrita do río Shinahota, um afluente do alto da bacia do rio Mamoré, Província de Tiraque, Estado de Cochabamba, Bolívia. A espécie nova pode ser distinguida de todas as suas congêneres exceto K. chapadae e K. geryi por ter seis fileiras de escamas entre a linha lateral e a origem da nadadeira dorsal (vs 4 ou 5 fileiras de escamas nas demais espécies. Knodus shinahota difere de K. chapadae por possuir mais fileiras de escamas entre a linha lateral e a origem da nadadeira pélvica (5 vs 3½ ou 4, respectivamente e mais escamas na linha lateral (38-41 vs 36-38, respectivamente. Difere de K. geryi por possuir mais fileiras de escamas entre a linha lateral e a origem da nadadeira pélvica (5 vs 4, respectivamente; menos raios ramificados na nadadeira anal (17-20 vs 15-17, respectivamente, e pela falta das duas grandes manchas escuras, simétricas, basalmente nos lobos da nadadeira caudal que caracteriza K. geryi.

  19. Lophiobrycon weitzmani, a new genus and species of glandulocaudine fish (Characiformes: Characidae from the rio Grande drainage, upper rio Paraná system, southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Ricardo M. C. Castro

    2003-09-01

    Full Text Available A new genus and species of glandulocaudine, Lophiobrycon weitzmani, is described based on specimens collected in headwater tributary streams of the rio Grande, upper rio Paraná system, State of Minas Gerais, southeastern Brazil. The inclusion of the new species in the phylogeny of the subfamily Glandulocaudinae proposed by Weitzman & Menezes (1998, reveals a sister group relationship between the new genus and the monophyletic group composed of Glandulocauda and Mimagoniates that currently form the tribe Glandulocaudini. The new species can be readily distinguished from all other species of the tribe by the autapomorphic presence in adult male individuals (with more than 23.9 mm standard length of an adipose-fin whose base extends for almost the entire distance between the posterior terminus of the base of the dorsal fin and the base of the upper lobe of the caudal fin and averages approximately 25% standard length, along with the presence of globular expansions formed by the lepidotrichia and hypertrophied soft tissue in the middle portions of the first and second pectoral-fin rays. The diagnosis of the tribe Glandulocaudini is modified to accommodate the new genus.Um novo gênero e espécie de glandulocaudine, Lophiobrycon weitzmani, é descrito com base em exemplares coletados em riachos de cabeceira da drenagem do rio Grande, sistema do alto rio Paraná, Estado de Minas Gerais, sudeste do Brasil. A inclusão desta nova espécie na filogenia da subfamília Glandulocaudinae, proposta por Weitzman & Menezes (1998, revela uma relação de grupos irmãos entre o novo gênero e o grupo monofilético formado por Glandulocauda e Mimagoniates, atualmente compondo a tribo Glandulocaudini. A nova espécie pode ser facilmente distinguida das demais da tribo pela posse autapomórfica, nos machos adultos (com mais de 23,9 mm de comprimento padrão, de uma nadadeira adiposa com a base estendendo-se por praticamente a totalidade da distância entre a

  20. Coeficientes de digestibilidad aparente de harina de pescado peruana y maíz amarillo duro para Colossoma macropomum (Actinopterygii, Characidae

    Directory of Open Access Journals (Sweden)

    Felix Walter Gutierrez

    2008-12-01

    Full Text Available Los Coeficientes de Digestibilidad Aparente (CDA de la materia seca (MS, proteína cruda (PC, lípido crudo(LC y energía bruta (EB de los ingredientes alimenticios harina de pescado peruana (HPP y de maíz amarillo duro (MAD fueron determinados en juveniles de Colossoma macropomum (150,0 ± 25,5 g. En el experimento la dieta de referencia se mezcló con cada uno de los ingredientes prueba en una relación de 70:30. El óxido crómico se usó como indicador inerte. La dieta de referencia y las dietas prueba fueron suministradas a C. macropomum, criada a 27 ºC, 7 mg/L de oxígeno disuelto y pH entre 7,5. Las muestras fecales fueron colectadas por sifoneo. Los CDA para MS, PC, LC y EB de la HPP fueron de 88,06 ± 0,83%, 87,08 ± 1,34%, 85,87 ± 2,69 y 87,29 ± 1,57% respectivamente. Igualmente los CDA para MS, PC, LC y EB del MAD fueron de 82,38 ± 1,02%, 75,46 ± 1,53%, 76,17 ± 2,43% y 75,04 ± 1,80% respectivamente. La energía digestible aparente calculada fue de 3950 Kcal/kg para la HPP y 2830 kcal/kg para el MAD. Se concluye que C. macropomum digiere mejor las fracciones proteicas y energéticas de la HPP. Al mismo tiempo muestra que digiere también la fracción energética del MAD, proveniente de los carbohidratos solubles.

  1. Ontogenetic, spatial and temporal variations in the feeding ecology of Deuterodon langei Travassos, 1957 (Teleostei: Characidae in a Neotropical stream from the Atlantic rainforest, southern Brazil

    Directory of Open Access Journals (Sweden)

    Jean R. S. Vitule

    2008-01-01

    ela vive. Desta forma, entender a ecologia alimentar de uma população de peixes e seus aspectos ontogenéticos, temporais e espaciais auxiliam na compreensão da assembléia de peixes e de toda a comunidade de um rio. Reconhecer tal estrutura é fundamental para o manejo e conservação da biodiversidade do habitat. A ecologia alimentar de Deuterodon langei Travassos, 1957 foi analisada por meio da composição da dieta, partilha de recursos, estratégia alimentar e contribuição dos itens alimentares para o nicho alimentar. As análises incluem uma abordagem das variações ontogenéticas, espaciais e temporais. A espécie foi considerada onívora com uma grande plasticidade alimentar causada pela variabilidade sazonal na disponibilidade de recursos e ao longo da bacia hidrográfica, mas principalmente ao longo de sua ontogenia. A dieta dos indivíduos menores revelou uma predominância de insetos e outros artrópodes, enquanto nos indivíduos maiores ocorreu um predomínio de vegetais alóctones. Os baixos valores de Quociente Intestinal (IQ para os indivíduos menores foram associados a uma dieta predominantemente insetívora. Os maiores comprimentos intestinais estiveram associados com uma maior plasticidade dos adultos, os quais são capazes de utilizar itens maiores e de difícil digestão, como itens de origem vegetal. Neste sentido, mudanças na ecologia alimentar durante o crescimento são confirmadas neste peixe onívoro de rios tropicais, ampliando o conceito de que, quando se compara os hábitos alimentares entre espécies, o tamanho dos peixes examinados deve ser levado em consideração. Este estudo contribui também com informações necessárias sobre a ecologia alimentar de peixes intrinsecamente associados com a Floresta Atlântica, um dos mais biodiversos e ameaçados ecossistemas do planeta.

  2. MOBING NA DELOVNEM MESTU

    OpenAIRE

    Grunt, Maja

    2016-01-01

    Diplomsko delo se osredotoča na probleme mobinga na delovnem mestu in morebitne rešitve. Razdeljeno je na teoretični in empirični del. V teoretičnem delu smo opredelili pojem mobing na delovnem mestu, kot ga razlagajo različni avtorji, oblike mobinga, ki kažejo na to, da se v podjetjih mobing pojavlja na različne načine in v vseh smereh, vzroke za njegovo nastajanje, ki se kažejo v kulturi organizacije, značilnostih organizacije dela, značilnostih žrtev mobinga in značilnostih napadalcev. Pr...

  3. Influence of spawning procedure on gametes fertilization success in Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae: Implications for the conservation of this species

    Directory of Open Access Journals (Sweden)

    Renato M. Honji

    2011-06-01

    Full Text Available Artificial reproduction and gamete fertilization were evaluated in Salminus hilarii wild and domesticated broodstocks. Wild and domesticated broodstocks were artificially induced to reproduction using a carp pituitary treatment. Four groups were considered: Group 1 (G1, fish caught in the wild maintained for three years in the same conditions as the domesticated broodstocks and spawned naturally; Group 2 (G2, broodstock born and raised in captivity and spawned naturally; Group 3 (G3, wild broodstocks, which were manually stripped for gamete collection and dry fertilization; and Group 4 (G4, domesticated males and females, also manually stripped. Oocytes, eggs, and larvae were sampled at different time intervals throughout embryonic development. Yolk sac absorption occurred approximately 24-29 h after hatching. Twenty-six h after hatching, the larvae mouths opened. Cannibalism was identified just 28-30 h after hatching. There was no morphological difference in embryonic development among all groups. The number of released eggs per gram of female was: G1: 83.3 ± 24.5 and G2: 103.8 ± 37.4; however, the fertilization success was lower in G2 (42.0 ± 6.37 % compared with G1 (54.7 ± 3.02% (P = 0.011. Hand-stripping of oocytes was not successful and the fertilization rate was zero. The reproduction of this species in captivity is viable, but it is necessary to improve broodstock management to enhance fertilization rates and obtain better fingerling production for restocking programs.A reprodução artificial e fertilização dos gametas foram avaliados em reprodutores selvagens e de cativeiro de Salminus hilarii. Reprodutores selvagens e de cativeiro foram induzidos artificialmente à reprodução utilizando hipófise de carpa. Quatros grupos foram considerados: Grupo 1 (G1, peixes capturados na natureza, mantidos por três anos nas mesmas condições de reprodutores de cativeiro e desovados naturalmente; Grupo 2 (G2, reprodutores nascidos e criados

  4. A multi-approach analysis of the genetic diversity in populations of Astyanax aff. bimaculatus Linnaeus, 1758 (Teleostei: Characidae from Northeastern Brazil

    Directory of Open Access Journals (Sweden)

    Vanessa de Carvalho Cayres Pamponet

    2008-12-01

    moleculares (RAPD e SPAR foram realizadas em espécimes coletados à montante e à jusante da Barragem da Pedra, na calha principal do médio rio de Contas (bacia do Rio de Contas e no ribeirão Mineiro, pertencente à bacia adjacente do Recôncavo Sul. Poucas diferenças externas foram detectadas entre as populações, sendo os indivíduos originários do reservatório, à montante da barragem, ligeiramente maiores. Os dados citogenéticos também mostraram padrões cariotípicos semelhantes (2n=50; 6m+28sm+12st+4a; FN= 96 e RONs situadas nos braços curtos de até dois pares cromossômicos, com variação numérica inter- e intra-populacional. Contudo, as análises por RAPD e SPAR diferenciaram as três populações de forma eficiente, revelando freqüências alélicas significativamente diferentes entre as localidades amostradas e índices significativos de estruturação populacional (Fst=0.1868, P<0.0001. As diferenças entre populações do mesmo rio foram tão significativas quanto entre bacias hidrográficas distintas, indicando que a represa constitui uma barreira eficiente ao fluxo gênico. Além disso, acredita-se que peculiaridades ambientais de cada localidade possam também influenciar os padrões genéticos encontrados. Por outro lado, a similaridade entre amostras das bacias do Rio de Contas e Recôncavo Sul pode estar relacionada a uma história evolutiva comum, já que ambas estão geograficamente próximas. Por fim, o presente estudo demonstra que a realização de estudos envolvendo diferentes marcadores é extremamente útil para a identificação de estruturas de populações em espécies amplamente distribuídas e para avaliação dos impactos das atividades humanas sobre as populações naturais de peixes.

  5. Dieta de Astyanax bimaculatus (Linnaeus, 1758) (Characiformes, Characidae), da área de influência do reservatório de Corumbá, Estado de Goiás, Brasil Feeding of Astyanax bimaculatus (Characiformes, Characidae), in the influence area of the Corumbá Reservoir, state of Goiás, Brazil

    OpenAIRE

    Danielle Peretti; Heloisa Baleroni Rodrigues Silva; Izabel de Fatima Andrian

    2001-01-01

    Com o objetivo de estudar a alimentação de Astyanax bimaculatus realizaram-se-se, no período de março de 1996 a fevereiro de 1997, amostragens mensais na área de influência do reservatório de Corumbá, agrupadas neste trabalho em três biótopos: Corumbá, Córregos e Rio do Peixe. Foram utilizadas redes de espera e de arrasto. Foram aplicados os métodos de ocorrência e volumétrico e o índice alimentar para analisar a dieta, que foi composta de vinte e sete itens. O índice alimentar, para o total ...

  6. Oportunismo alimentar de Knodus moenkhausii (Teleostei, Characidae: uma espécie abundante em riachos do noroeste do Estado de São Paulo, Brasil Feeding opportunism of Knodus moenkhausii (Teleostei, Characidae: an abundant species in streams of the northwestern in the state of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Mônica Ceneviva-Bastos

    2007-03-01

    Full Text Available O objetivo deste estudo foi investigar a biologia alimentar de Knodus moenkhausii (Eigenmann & Kennedy, 1903 em riachos do Alto rio Paraná no Estado de São Paulo. Em oito riachos (R1-R8, K. moenkhausii se alimentou de 18 itens, dos quais algas, ninfas de efemerópteros e larvas de dípteros foram os itens autóctones mais freqüentes e dominantes; fragmentos de insetos terrestres, himenópteros e aranhas foram os itens alóctones mais freqüentes e dominantes. No riacho R2, K. moenkhausii apresentou dieta distinta dos demais riachos, principalmente em função da profundidade, tipo de substrato e da presença de vegetação ripária. No riacho R9, amostrado mensalmente durante um ano, foram identificados 15 itens, dos quais insetos terrestres predominaram ao longo do ano; larvas de dípteros e algas foram pouco expressivas nos períodos de dezembro-janeiro (período mais quente e chuvoso e junho-julho (período mais frio e seco. No riacho R9 foram realizadas observações subaquáticas durante mergulho livre, onde observamos a cata de itens na coluna d'água junto do substrato, da vegetação submersa e na superfície da água. A elevada variedade de itens consumidos - condicionada às variações do hábitat e sazonais - e a prática de diversas táticas nos permitem considerar K. moenkhausii uma espécie oportunista quanto ao uso dos recursos alimentares. Este oportunismo aparentemente se reflete na abundância da espécie, demonstrando boa capacidade em alocar parte significativa de sua energia à reprodução, mesmo em ambientes fisicamente impactados por ação antrópica.In the present investigation we studied the feeding biology of Knodus moenkhausii (Eigenmann & Kennedy, 1903 in streams of the Upper Paraná river system in the state of São Paulo. In eight streams (R1-R8, K. moenkhausii consumed 18 items, of which algae, ephemeropteran nymphs, and dipteran larvae were the most frequent and dominant autochthonous items, as were

  7. Uso do alimento por duas espécies simpátricas de Moenkhausia (Characiformes, Characidae em um riacho da Região Centro-Oeste do Brasil Food used by two sympatric species of Moenkhausia (Characiformes, Characidae, in a stream of center-western Brazil

    Directory of Open Access Journals (Sweden)

    Raffael M Tófoli

    2010-09-01

    Full Text Available Esse estudo avaliou sazonalmente a dieta de Moenkhausia dichroura (Kner, 1858 e M. sanctaefilomenae (Steindachner, 1907, coletadas em simpatria no riacho Cancela, Mato Grosso, Brasil. Independente do período hidrológico, alimentos de origem alóctone predominaram na dieta de ambas as espécies (>50% do total de itens consumidos, sendo insetos terrestres o recurso principal, embora, para M. dichroura insetos aquáticos tenham contribuído na dieta também. Hymenoptera (Formicidae foi o alimento mais consumido, sendo ambas as espécies caracterizadas como insetívoras terrestres. A dieta restrita dessas espécies é confirmada pelos baixos valores de amplitude de nicho trófico: Ba=0,26 para M. dichroura em ambos os períodos e Ba=0,41 no período de seca e 0,38 no período de chuva, para M. sanctaefilomenae. A sobreposição alimentar foi elevada no período de chuva (Ojk=0,75 e apresentou valor intermediário no período de seca (Ojk=0,41, evidenciando maior partilha do alimento entre as espécies neste período.This study evaluated the seasonality in the diet of Moenkhausia dichroura (Kner, 1858 and M. sanctaefilomenae (Steindachner, 1907, sympatric species of the Cancela stream, state of Mato Grosso, Brazil. Regardless of the seasonal period, allochthonous food source predominated in the diet of both species (>50% of all items consumed and among these terrestrial insects were the dominant resource. However, aquatic insects were important in the diet of M. dichroura as well. Hymenoptera (Formicidae was the dominant item to both species, thus they were characterized as terrestrial insectivorous. The restricted diet of these species is confirmed by the trophic niche breadth, whose values were in general low: Ba=0.26 to M. dichroura in both periods and Ba=0.41 and 0.38 in the dry and rainy period, respectively, to M. sanctaefilomenae. The feeding overlap was high in the rainy period (Ojk=0.75 and intermediate in the dry period (Ojk=0.41, showing

  8. Envolvimento Parental na Escola

    OpenAIRE

    Alves, Marta Raquel Garcia; Rolim, Luísa

    2011-01-01

    O nosso estudo teve como objectivo verificar se existe envolvimento parental na Escola Básica Integrada com Jardim de Infância de Góis. Nesta análise foram questionados alguns alunos dos 7º e 9º anos, encarregados de educação e docentes dos referidos alunos. A nossa amostra contou com a participação de 115 indivíduos sendo 67 alunos 31 encarregados de educação e 17 docentes. Na recolha dos dados usamos o Questionário de Envolvimento Parental na Escola de Pereira (2002), com Versão para pais e...

  9. FOTOALERGIJSKE REAKCIJE NA LIJEKOVE

    OpenAIRE

    Bukvić Mokos, Zrinka; Lipozenčić, Jasna

    2011-01-01

    Reakcije na lijekove posredovane svjetlom mogu biti fototoksične i fotoalergijske. U ovom preglednom članku prikazane su fotoalergijske reakcije na lijekove koje nastaju interakcijom lijeka i ultraljubičastog svjetla uz sudjelovanje imunosnih mehanizama. Uz osvrt na fotobiologiju te najčešće lijekove koji sudjeluju u nastanku fotoalergijskih reakcija, prikazana je imunološkapodloga tih dermatoza, klinička slika, te dijagnostički i terapijski postupak. Poznavanje potencijalnih fotoalergena i p...

  10. EROTIČNA RISBA

    OpenAIRE

    LAZAR, FORTUNA

    2009-01-01

    Diplomsko delo z naslovom »Erotična risba« je sestavljeno iz teoretičnega in praktičnega dela, pri čemer je praktični del vsebinsko vezan na teoretični del diplomske naloge. Neposredna erotična upodobitev je del likovne produkcije večine umetnikov. V raziskovanju erotičnih upodobitev sem izpostavila dva umetnika, Egona Schieleja, ki je ustvaril pomemben opus erotične figuralike in Marlene Dumas, še živečo umetnico, ki skozi erotične podobe izraža aktualne teme sodobnosti. Namen tega diplomske...

  11. PRIPRAVE NA POSLOVNI NASTOP

    OpenAIRE

    Grušovnik, Nataša

    2010-01-01

    V sodobnem svetu se že skoraj na vsakem delovnem mestu srečamo s poslovno komunikacijo in raznimi predstavitvami poslovnih projektov, izdelkov ali storitev, zato je pomembno, da se za nastop primerno pripravimo in usposobimo. V tem diplomskem delu je predstavljeno poslovno komuniciranje, čigar namen je doseganje določenih ciljev, med katere zagotovo spada uspešen javni nastop ali predstavitev. Predstavljen je način, kako se lahko posameznik z učinkovitim usposabljanjem in pripravo na nastop z...

  12. Djelovanje eksplozija na konstrukcije

    OpenAIRE

    Draganić, Hrvoje; Sigmund, Vladimir

    2012-01-01

    Dana je analiza opterećenja eksplozijom na konstrukciju te numerički primjer djelovanja na fiktivnu građevinu. Cilj je bio upoznati se s fenomenom eksplozije kao opterećenja na konstrukcije uslijed sve veće terorističke prijetnje te nedostatka smjernica u nacionalnim i europskim propisima o provjeri konstrukcija izloženih djelovanju eksplozija. Analitički je određeno opterećenje eksplozijom kao vremenski zapis promjene tlaka zraka te numerički modeliranja konstrukcija i prethodno određeno opt...

  13. CRKVA SIGURATA NA PRIJEKOM

    OpenAIRE

    Peković, Željko

    1997-01-01

    Crkva Sigurata na Prije kom teško je oštećena prilikom agresije Srba, Crnogoraca i JNA na Dubrovnik 1991. i 1992. godine. Prilikom radova na obnovi i restauraciji , 1993. - 1994. godine, crkva je temeljito istražena. Autor donosi rezultate istraživanja i njihovo tumačenje kroz prostorni razvoj građevine. Istraživanja su upotpunila i produbila znanja o predromaničkoj građevini , te njenih pregradnja i dogradnja tijekom XVI. i XVII. stoljeća . Istraživanja su ustvrdila postojanje ostataka dviju...

  14. Early development of Brycon orthotaenia (Pisces: Characidae).

    Science.gov (United States)

    Gomes, Rafael Zeferino; Sato, Yoshimi; Rizzo, Elizete; Bazzoli, Nilo

    2013-02-01

    Brycon orthotaenia is an important fish for commercial and sport fishing and may reach 7 kg in body weight; it is endangered in some regions of Brazil's São Francisco River Basin. Breeders were subjected to spawning induction to analyse the early development; oocytes and semen were obtained by manual extrusion and fertilization was carried out using the dry method. After fertilization, eggs were kept in incubators at 24°C. Egg samples were collected every 10 min until hatching in order to monitor embryonic development and were analysed and photographed. Larvae samples were collected daily until the seventh day to analyse the larvae development; larvae were fixed in Bouin's fluid and subjected to routine histological and histochemical techniques for glycoprotein and glyco-conjugated detection. Oocyte extrusion occurred 6 h after the second hormone dose at 26°C. The recently extruded oocytes were spherical, dark green and non-adhesive, with a diameter of 1479.67 ± 53.18 and 3094.60 ± 80.34 μm after hydration. The blastopore closure occurred within 7 h 30 min of fertilization and the fertilization rate was 50.0 ± 5.5 % at 24°C. Embryonic development was completed within 21 h 30 min of fertilization. Complete yolk sac resorption and mouth opening occurred on the third day after hatching, at which time an adhesive organ with mucosubstances was observed. On the third day, an olfactory chamber with cilia and intense cannibalism amongst the larvae was observed. The complete differentiation of the digestive system occurred on the fifth day and the nervous and sensorial systems differentiation occurred on the sixth to seventh days. PMID:21733293

  15. Alimentação e ecomorfologia de duas espécies de piranhas (Characiformes: Characidae do lago de Viana, estado do Maranhão, Brasil Feeding and ecomorphology of two species of piranhas (Characiformes: Characidae from the Viana Lake, Maranhão state, Brazil

    Directory of Open Access Journals (Sweden)

    Nivaldo Magalhães Piorski

    2005-01-01

    Full Text Available Serrasalmus aff. brandtii e Pygocentrus nattereri são duas espécies de piranhas comuns no Lago de Viana, um lago formado a partir das inundações do Rio Pindaré, tributário da margem esquerda do Rio Mearim. Uma amostra composta por 249 exemplares destas espécies foi estudada a fim de identificar a composição da dieta e as estratégias alimentares empregadas pelas duas. Os peixes foram coletados trimestralmente durante um ano, entre março de 1998 e março de 1999, usando redes de emalhar e tarrafas. A composição qualitativa da dieta foi analisada com uso do método de freqüência de ocorrência. As estratégias alimentares empregadas pelas espécies foram inferidas através do método gráfico de Costello (1990, modificado por Amundsen et al. (1996. Os resultados indicaram que peixes foi o item encontrado com maior freqüência nos estômagos de ambas as espécies, seguido de matéria vegetal, com maior participação na dieta de P. nattereri. Os recursos peixes e vegetais tenderam a apresentar relações inversas quando comparados com as diferentes classes de comprimento. A análise gráfica da dieta de P. nattereri e S. aff. brandtii sugere que a maioria dos indivíduos utiliza vários recursos simultaneamente. Uma análise multivariada de índices ecomorfológicos indicou que as espécies são segregadas com relação à habilidade natatória, posição ocupada na coluna d'água e tamanho relativo das presas.Serrasalmus aff. brandtii and Pygocentrus nattereri are two species of piranhas, both common in the Viana Lake, which is formed by the flooding waters of the Pindaré River, a tributary of the left bank of the Mearim River. A sample composed of 249 specimens of these species was studied in order to identify diet composition and feeding strategies employed by the two species. The piranhas were captured thrimonthly, during one year from March 1998 to March 1999 using gill and fishing nets of different mesh sizes. The qualitative

  16. Morphological variation in populations of Tetragonopterus argenteus Cuvier, 1817 (Characiformes, Characidae from Madeira and Paraguay river basins Variação morfológica em populações de Tetragonopterus argenteus Cuvier, 1817 (Characiformes, Characidae das bacias dos rios Madeira e Paraguai

    Directory of Open Access Journals (Sweden)

    Willian Massaharu Ohara

    2007-10-01

    Full Text Available The saua Tetragonopterus argenteus is endemic to South America. It has a wide geographic distribution and occurs in different Brazilian basins, such as those of the Madeira and Paraguay rivers. In this work, it was noticed that populations from these basins have morphological variations between them, indicating a possible geographic isolation. Specimens were studied using twelve morphological characters that were submitted to the canonical variates and body proportion analysis. In the canonical variate analysis, the populations from the Madeira and Paraguay river basins were differentiated by caudal peduncle depth, eye diameter, pre-ventral distance, body height, snout length and head length. In the body proportion analysis, the population of Madeira river basin presented head length, orbital diameter, pre-dorsal distance, dorsal-fin length, pre-ventral distance, body height and caudal peduncle height, smaller than those of the population from Paraguay river basin. These results allowed the recognition of intra-specific variation amplitude, that could become an important instrument for management and conservation of this species. O sauá Tetragonopterus argenteus é endêmico da América do Sul, apresenta ampla distribuição geográfica e ocorre em várias bacias brasileiras, entre elas as dos rios Madeira e Paraguai. Neste trabalho foi observado que as populações dessas bacias apresentam variações morfológicas que, provavelmente, representam isolamento geográfico. Exemplares foram estudados através de 12 caracteres morfológicos e submetidos às análises de variáveis canônicas e de proporções corporais. Na análise das variáveis canônicas, as populações das bacias dos rios Madeira e Paraguai diferenciaram-se pelo diâmetro do olho, distância pré-ventral, altura do corpo, comprimento do focinho, altura do pedúnculo caudal e comprimento da cabeça. Na análise das proporções corporais, a população da bacia do rio Madeira

  17. Fauna parasitária de tambaqui Colossoma macropomum (Characidae cultivado em tanque-rede no estado do Amapá, Amazônia oriental Parasitic fauna of tambaqui Colossoma macropomum(Characidae farmed in cages in the State of Amapá, eastern Amazon

    Directory of Open Access Journals (Sweden)

    Evandro Freitas Santos

    2013-03-01

    Full Text Available O objetivo principal deste trabalho foi estudar a parasitofauna e a relação hospedeiro- parasito em tambaqui Colossoma macropomum cultivados em tanques-rede no Rio Matapi, município de Santana, estado do Amapá, região da Amazônia oriental, Brasil. Foram examinados 60 tambaquis, dos quais 96,7% estavam parasitados por protozoários Ichthyophthirius multifiliis (Ciliophora e Piscinoodinium pillulare (Dinoflagellida, monogenoideas Mymarotheciun boegeri e Anacanthorus spathulatus (Dactylogyridae e sanguessugas Glossiiphonidae gen. sp. (Hirudinea. Os maiores níveis de parasitismo foram causados por protozoários I. multifiliis e P. pillulare e os menores por sanguessugas Glossiiphonidae gen. sp. Porém, os índices de infestação não tiveram efeitos na saúde dos peixes hospedeiros, uma vez que o fator de condição relativo (Kn não foi estatisticamente (pThe purpose of this paper was to evaluate the parasitic fauna and the host-parasite relationship in Colossoma macropomum farmed in cages of Matapi River, municipally of Santana, State of Amapá, in eastern Amazon, Brazil. Of 60 specimens of tambaqui examined, 96.7% were parasitized by protozoans Ichthyophthirius multifiliis (Ciliophora and Piscinoodinium pillulare (Dinoflagellida, monogenoideans Mymarotheciun boegeri and Anacanthorus spathulatus (Dactylogyridae, and leeches Glossiphoniidae gen. sp. (Hirudinea. The higher infestation levels were caused by protozoans I. multifiliis and P. pillulare, while the lower infestation levels were caused by leeches. No effects of parasitic infestation rates on fish health were observed. The relative condition factor (Kn was not correlated with the intensity of parasites found. This was the first record of I. multifiliis and P. pillulare in C. macropomum farmed in cages in the Brazilian Amazon.

  18. At NA2

    CERN Multimedia

    1977-01-01

    One of the NA2 calorimeter sections is moved in. The NA2 calorimeter was divided in two halves, to the left and the right of the beam, each half consisting of sheets of passive high Z material interleaved with blades of plastic scintillators. The photo shows on the right, the upstream 'electron' module with eleven lead plates for a total radiation length of 20.

  19. Y-virus krumpira na duhanu na Kosovu

    OpenAIRE

    Taraku, Nysret; Juretić, Nikola

    1991-01-01

    U prošlih nekoliko godina javlja se na duhanu na području Kosova vrlo agresivna virusna bolest zbog koje nastaju znatne gospodarske štete. Na oboljelim biljkama virus uzrokuje nekrotične promjene na listu, osobito nekroze žila, te mozaik. U ovom su radu istražena 4 virusna izolata (TI, T2, T3, T4) nađena na duhanu u okolici Gnjilana, Uroševca, Đakovice i Prizrena. Na osnovi istraživanja kruga domaćina, osobina in vitro, seroloških svojstava te studija mikroskopskih i submikroskopskih inkluzij...

  20. Morfologia do trato digestório e dieta de larvas de Bryconamericus aff. iheringii (Boulenger, 1887 (Osteichthyes, Characidae - DOI: 10.4025/actascibiolsci.v28i1.1059 Morphology of Digestive tract and diet of Bryconamericus aff. iheringii larvae (Boulenger, 1887 (Osteichthyes, Characidae - DOI: 10.4025/actascibiolsci.v28i1.1059

    Directory of Open Access Journals (Sweden)

    Keshiyu Nakatani

    2006-03-01

    Full Text Available Este trabalho teve como objetivo analisar alguns aspectos da alimentação de larvas de Bryconamericus aff. iheringii, capturadas nos meses de julho e novembro de 2001, nas regiões limnética e litorânea do reservatório de Santa Maria, rio Piquiri, Estado do Paraná. As larvas apresentaram boca subterminal durante todo o seu desenvolvimento. O tubo digestório se diferenciou em estômago e intestino apenas no estágio de pós-flexão. As larvas consumiram, principalmente, algas e microcrustáceos, o que permitiu caracterizá-las como planctófagas. A intensa modificação morfológica no trato digestório nos indivíduos em pós-flexão coincidiu com o aumento na abundância de algas em relação aos itens de origem animal; porém, de forma geral, a ocorrência aumentou para todos os itens. A análise do grau de digestão dos itens alimentares sugeriu que indivíduos em pré-flexão alimentaram-se, possivelmente, durante o dia, e os mais desenvolvidos, durante o entardecer e no período noturnoThe aim of this study was to analyze some feeding treats of Bryconamericus aff. iheringii larvae, sampled in both the limnetic and littoral regions of the Piquiri River, in Santa Maria reservoir, between July and November 2001. The larvae presented sub-terminal mouth in larval period. The digestive tract differentiated in terms of stomach and intestine only in the postflexion larvae. The larvae fed mainly on algae and microcrustacea allowing to characterize them as planktivorous. The intense morphologic shift in the digestive tract in the postflexion larvae coincided with an increase in the abundance of algae in relation to animals items; however, in general, all the items had their occurrence increased. Analysis of the digestion stage suggested that preflexion larvae, possibly, fed themselves during the day, and those more developed, at dusk and night

  1. Karyotypical diversity of the red piranha (Pygocentrus nattereri (Characiformes, Characidae, Salobo river, Araguaia basin, Pará, Brazil Diversidade cariotípica de piranha vermelha (“Pygocentrus nattereri” (Characiformes, Characidae, rio Salobo, bacia do Araguaia, Pará, Brasil. DOI: 10.7902/ecb.v2i1.32

    Directory of Open Access Journals (Sweden)

    Mariana Passos Santana

    2011-06-01

    Full Text Available Serrasalmideos are fish commonly known as pacus and piranhas, and include around 80 species and 15 generas. The generas are represented in the Amazon, Paraná-Paraguay and São Francisco basins. The objective of this work was to perform Karyotypical analyses and define the locations of the NOR sites in specimens of red piranhas (Pygocentrus nattereri. Ten individuals of P. nattereri were collected in the Salobo River, Araguaia basin, in Rio Maria municipality, Pará, Brazil. Kidney cells were extracted from each specimen to obtain chromosomes in mitotic metaphases, and stained with silver nitrate to observe the NORs. The recorded photograph was made using an Olympus BX60 microscope, the photos were processed in Adobe Photoshop CS2 and the metaphases were mounted in Image-Pro Plus®. The specimens presented a 2n=60 diploid number and the chromosomal formula was 14m+22sm+14st+10a, with NF=100. The results of the NOR karyotypes are within the variation expected for this family, genus and species.

    Serrasalmideos são peixes conhecidos por pacus e piranhas, incluindo cerca de 80 espécies e 15 gêneros. Os gêneros estão representados na bacia Amazônica, Paraná-Paraguia e São Francisco. O objetivo deste trabalho foi realizar análises cariotípicas e definir a localização dos sítios de NORs, em espécimes de piranha vermelha Pygocentrus nattereri. Foram analisados dez indivíduos de P. nattereri coletados no rio Salobo, bacia do Araguaia, no município de Rio Maria, Pará-Brasil. Os espécimes foram submetidos às técnicas de obtenção de cromossomos mitóticos metafásicos a partir de células do rim anterior e as NORs obtidas pela impregnação com nitrato de prata. O registro fotográfico feito em microscópio Olympus BX60, as fotos processadas em Adobe Photoshop CS2 e as metáfases montadas no Image-Pro Plus®. Os espécimes apresentaram 2n=60 e a fórmula cromossômica 14m+22sm+14st+10a, com NF=100. Os

  2. VPLIV MOTIVACIJE NA DELOVNEM MESTU

    OpenAIRE

    Žitnik, Marjan

    2011-01-01

    Diplomski seminar predstavlja motivacijo, bolj natančno motivacijo na delovnem mestu in kako motivacija vpliva na zaposlene v podjetju, tako kot tudi na organizacijo in okolico. Predstavljeni so tudi dejavniki motivacije in posameznik, ki je tvorec svojih lastnosti in sposobnosti preko katerih vpliva, tako na lastno motivacijo, tako kot tudi na motivacijo ostalih v organizaciji. Največja pozornost v diplomskem seminarju je namenjena teorijam motivacije, iz katerih izhajajo nadaljnje ugotovitv...

  3. Optimalizace kotle na biomasu

    OpenAIRE

    Mizerovský, Karel

    2015-01-01

    Bakalářská práce se zabývá návrhem opatření pro optimalizaci kotle na biomasu. Teoretická část pojednává o základním rozdělení kotlů na tuhá paliva se zaměřením na kotle spalující biomasu. Další část práce se věnuje návrhu deflektorů, zvyšujících účinnost zařízení a praktické ověření výsledků měřením.

  4. A ENGENHARIA NA ESCOLA

    Directory of Open Access Journals (Sweden)

    Valéria Pelizzer Casara

    2015-04-01

    Full Text Available Este projeto teve por objetivo principal mostrar às jovens do ensino médio, como as áreas de exatas e de engenharia podem estar inseridas em situações rotineiras por elas vivenciadas e incentivá-las para ingressarem nessas áreas. Mostrou-se de forma simples que as áreas de exatas e de engenharia têm aplicações práticas nas nossas vidas. Esse projeto atende a chamada pública MCTI/CNPq/SPM-PR/Petrobras nº 18/2013 -  Meninas e Jovens Fazendo Ciências Exatas, Engenharias e Computação. O projeto foi executado na escola de ensino Médio Nelson Horostecki na cidade de Chapecó-SC. No desenvolvimento do projeto, realizaram-se oficinas na escola cujo tema principal abordado foi o processo de fabricação do chocolate, visto que o mesmo é um produto muito apreciado pelas adolescentes. Dentro dessa temática, foram trabalhadas as questões que envolvem conhecimentos das áreas de exatas e de engenharia, mais especificamente a engenharia ambiental. O projeto auxiliou na formação cidadã e também na escolha profissional das meninas. Muitas das alunas participantes nunca tiveram contato direto com alunos graduandos de algum curso na área das exatas e este projeto oportunizou a aproximação da universidade com a comunidade externa.

  5. NOČNA FOTOGRAFIJA

    OpenAIRE

    Grgurič, Gregor

    2014-01-01

    Nočna fotografija se zajema na prostem med mrakom in zarjo. Z njo poskušamo izkoristiti drugačen ambient kot pri dnevni svetlobi. Zaradi pomanjkanja svetlobe izvedba nočne fotografije zahteva uporabo daljših osvetlitvenih časov. Če je čas osvetlitve senzorja daljši, je ponavadi prisotna določena stopnja šuma, ki ga lahko omilimo s kvalitetnejšimi fotoaparati in s prilagojeno tehniko fotografiranja. Pomemben faktor pri nočni fotografiji je oprema. Poslužujemo se tudi različnih pripomočkov, kot...

  6. MOBING NA DELOVNEM MESTU

    OpenAIRE

    Mraz, Darja

    2011-01-01

    Mobing pomeni načrtno psihično nasilje,trpinčenje in šikaniranje,ki žrtev privede do socialne izolacije.Proces mobinga poteka skozi štiri faze.Začne se s konfliktom in nadaljuje z uveljavitvijo mobinga v obliki stalnih napadov,vse skupaj pa se lahko konča z izključitvijo iz delovnega življenja.Ključni dejavniki mobinga so stres pri delu,način vodenja ter slabo vzdušje med zaposlenimi in vodstvom.

  7. At NA3

    CERN Multimedia

    1978-01-01

    The photo shows the proportional chamber PC1 of the NA3 forward spectrometer. The chamber was placed downstream the beam dump and specially designed to support a high flux of particles, see Nucl. Instrum. Methods 175 (1980) 319. Anta Diop stands on the foreground, right.

  8. The NA35 experiment

    CERN Multimedia

    1987-01-01

    The NA35 experiment ran on the Super Proton Synchrotron (SPS) accelerator at CERN. It was used for the study of relativistic nucleus-nucleus collisions which were used to search for evidence of new types of quark matter. Quarks are found inside protons and neutrons, which in turn make up atoms.

  9. Konstrukce sila na cukr

    OpenAIRE

    Kotík, Libor

    2015-01-01

    Předmětem diplomové práce je statický návrh a posudek předpjatého sila na 50000t cukru. Zpracován je výpočtový model ocelové střešní konstrukce a jeho působení na konstrukci sila. Je stanoveno zatížení od uskladněného cukru. Je proveden optimální návrh a posouzení na mezní stav použitelnosti a únosnosti betonářské výztuže a vodorovného předpětí stěny sila včetně lokálních namáhání. Dále je proveden návrh betonářské výztuže dna sila a sloupu v podsilí a posouzení na mezní stav únosnosti. Součá...

  10. Riso na epilepsia

    Directory of Open Access Journals (Sweden)

    Edymar Jardim

    1967-06-01

    Full Text Available São estudados três casos de síndrome convulsiva temporal, com manifestações concomitantes de riso na sua fase inicial. As características principais foram a imotivação e á incoercibilidade do riso. Esses sintomas desapareceram com o uso de anticonvulsivantes.

  11. Fluctuations and NA49

    International Nuclear Information System (INIS)

    A brief history of the study of fluctuations in high energy nuclear collisions at the CERN SPS by NA49 is presented. The ideas and the corresponding experimental data on fluctuations are discussed from the point of view of their sensitivity to the onset of deconfinement

  12. Biotecnologia na agricultura

    Directory of Open Access Journals (Sweden)

    Helaine Carrer

    2010-01-01

    Full Text Available A expectativa de o crescimento populacional atingir 9 bilhões de habitantes em 2050 em adição às questões da sustentabilidade e do aquecimento global nos desafiam a aumentar a oferta de alimentos. Uma metodologia alternativa que contribua para a redução do impacto desse cenário envolve a biotecnologia, que, nas últimas décadas, trouxe marcantes oportunidades tecnológicas na agricultura, resultando em relevante desenvolvimento na obtenção de novas variedades de plantas, na melhoria da qualidade de diversos alimentos e atualmente também na bioenergia. As técnicas biotecnológicas envolvendo os marcadores moleculares, a genômica e a transformação genética estão transformando a agricultura e são discutidas neste artigo.The expected population growth to reach 9 billion by 2050 in addition to issues of sustainability and global warming challenges us to increase the supply of food. An alternative approach to help reducing the impact of this scenario involves biotechnology which in recent decades has brought remarkable technological opportunities in the agriculture that resulted in relevant development in obtaining new plant varieties, improved quality of different foods, and now also in bioenergy. The biotechnology techniques involving molecular markers, genomics and genetic transformation are transforming agriculture and will be discussed in this article.

  13. At NA5

    CERN Multimedia

    1978-01-01

    The NA5 experiment is shown at the start of the setting up in beam H2 of hall EHN1. It was designed by the Bari- Cracow-Liverpool-Munich (MPI) Collaboration to study hard hadron-hadron collisions with a streamer chamber vertex spectrometer and a calorimeter trigger. The beam from target T2 enters from the left. E

  14. STANDARD ODVZEMA KRVI NA DOMU

    OpenAIRE

    Ciglar, Blaž

    2015-01-01

    V sklopu negovalnih intervencij patronažnega varstva, ki jih izvaja patronažna medicinska sestra, smo obravnavali negovalno intervencijo odvzem krvi na domu ter napisali standard. Odvzem krvi na domu sodi k zahtevnejšim negovalnim intervencijam patronažne medicinske sestre, saj zahteva visoko stopnjo profesionalnosti in strokovnosti pri celotnem postopku negovalne intervencije. Odvzem krvi patronažna medicinska sestra izvede po procesu zdravstvene nege po točno določenih korakih, opredeljenih...

  15. ROČNA ZASTAVNA PRAVICA NA PREMIČNINAH

    OpenAIRE

    Benko, Ana

    2013-01-01

    Ročna zastavna pravica na premičninah (pignus) je oblika zavarovanja terjatev, pri kateri je dodatno jamstvo za izpolnitev dolžnikove obveznosti vrednost zastavljene stvari. Bistvena značilnost ročne zastavne pravice na premičninah je njena posestnost. O posesti oziroma neposesti govorimo z vidika zastavnega upnika. Po vsebini je ročna zastavna pravica podobna pridržni (retencijski) pravici. Njen predmet je lahko vsaka premična stvar, ki je v pravnem prometu in ima neko prometno vrednost. Je ...

  16. SODOBNI PLES NA SLOVENSKEM

    OpenAIRE

    Marinko, Jožica

    2013-01-01

    Diplomsko delo predstavlja temo sodobni ples na Slovenskem. Podrobneje je predstavljena zgodovina sodobnega plesa v Sloveniji − od prvih zacetkov, pa do danes. Predstavljene so pomembne osebnosti, ki so sodobnemu plesu utrle pot in mu pomagale, da je iz zacetnega ljubiteljstva prerasel v profesionalnost. Navedene so težave, s katerimi so se spopadali sodobni plesalci, in težave, s katerimi se spopadajo še danes. Izpostavljen je problem šolanja plesalcev, predstavljena so dru...

  17. Cuba na OEA

    Directory of Open Access Journals (Sweden)

    Antônio Carlos Lessa

    2009-06-01

    Full Text Available A Organização dos Estados Americanos abriu caminho para o possível retorno de Cuba à organização, pondo fim à medida que por 47 anos baniu os países comunistas e era o mais importante sinal do isolamento de Cuba na região. 

  18. Kotelny na biomasu

    OpenAIRE

    Egerle, Dušan

    2013-01-01

    Projekt řeší vytápění a přípravu teplé vody pro bytový dům v Chocni (Pardubický kraj). Bytový dům má tři nadzemní vytápěná podlaží a jedno podzemní nevytápěné podlaží. Zdrojem tepla je zplynovací kotel na dřevo, resp. kotel na pelety, který zároveň slouží pro přípravu teplé vody v zimním období, po ostatní část roku jsou na přípravu teplé vody nainstalovány solární kolektory. Zdroj tepla je umístěn v oddělené a samostatně přístupné místnosti, v kotelně....

  19. Cenzura na Internetu

    OpenAIRE

    Žila, Milan

    2011-01-01

    Tato práce se zabývá problémem cenzury na internetu v Číně. Práce popisuje formy a způsoby internetové cenzury v Číně. Zároveň uvádí i možnosti zjištění, ověření a obcházení cenzury pomocí různých nástrojů, aplikací a internetových služeb. Práce obsahuje výsledky provedených testů určených k ověření a zjištění cenzurovaných webových stránek a klíčových slov z různých lokací v Číně. Na základě těchto testů jsou vyvozeny závěry o cenzuře na internetu v Číně. This thesis deals with the p...

  20. Spawning Behavior, Egg Development, Larvae and Juvenile Morphology of Hyphessobrycon eques (Pisces: Characidae) Characidae Fishes.

    Science.gov (United States)

    Park, Jae-Min; Kim, Na-Ri; Han, Kyeong-Ho; Han, Ji-Hyeong; Son, Maeng-Hyun; Cho, Jae-Kwon

    2014-12-01

    Hyphessobrycon eques is a famous fish for ornamental fish market and aquarium. They are inhabit in regions of Amazon and Paraguay River basin. Serpae fishs were investigated 2-3 males are chased to female, and then males attempted to simulate the females abdomen. After fertilization, eggs were kept in incubators at 28°C. The fertilized eggs had adhesive and demesal characteristics and had a mean diameter of 0.92 ± 0.01 mm. Larvae hatched at 16 hrs post fertilization. The hatched larvae averaged 2.90 ± 0.16 mm in total length (LT ). Complete yolk sac resorption and mouth opening occurred on the third day post hatching. At 45 days post hatching, the larvae were 12.5 ± 1.60 mm LT and had reached the juvenile stage. PMID:25949194

  1. Miocardiopatia dilatada na infancia

    OpenAIRE

    Madureira, José Rubens Alcantara

    2013-01-01

    Resumo: Com objetivo de estudar a evolução e obter informações prognosticas da Miocardiopatia Dilatada na infância. Foram Estudados 70 pacientes internados no Centro de Cardiologia Infantil do Paraná, do Hospital infantil Pequeno Príncipe, em Curitiba, no período de Janeiro de 1985 a janeiro de 1995. Todos os pacientes foram internados por ocasião da primeira consulta hospitalar, tendo sido realizados exame clínico, radiografia de tórax, eletrocardiograma e ecocardiograma regularmente, no int...

  2. Highlights from NA60

    CERN Document Server

    De Falco, A; Banicz, K; Borer, K; Castor, J; Chaurand, B; Chen, W; Cicalò, C; Colla, A; Cortese, P; Damjanovic, S; David, A; Devaux, A; Ducroux, L; Enyo, H; Fargeix, J; Ferretti, A; Floris, M; Force, P; Förster, A; Guettet, N; Guichard, A; Gulkanian, H R; Heuser, J; Keil, M; Kluberg, L; Li, Z; Lourenço, C; Lozano, J; Manso, F; Martins, P; Masoni, A; Neves, A; Ohnishi, H; Oppedisano, C; Parracho, P; Pillot, P; Poghosyan, T; Puddu, G; Radermacher, E; Ramalhete, P; Rosinsky, P; Scomparin, E; Seixas, J; Serci, S; Shahoyan, R; Sonderegger, P; Specht, H J; Tieulent, R; Usai, G; Veenhof, R; Wöhri, H

    2009-01-01

    NA60 measured dimuon production in p-A and In-In collisions at the CERN SPS. This paper presents a high statistics measurement of $\\phi$ meson production in In-In collisions at 158 AGeV. Both the transverse momentum, rapidity, decay angular distributions and the absolute yield were measured as a function of centrality. The results are compared to previous measurements in order to shed light on the long standing $\\phi$ puzzle. In addition, highlights on $\\eta$ meson production and on the dimuon excess below the J/$\\psi$ mass are presented.

  3. Stress laboral na PSP

    OpenAIRE

    Passeira, Andrea Verónica Vaz

    2011-01-01

    Dissertação de Mestrado em Segurança e Higiene no Trabalho O presente Estudo foi aplicado a profissionais da polícia do Comando Metropolitano de Lisboa da PSP. O objectivo principal subjacente a este trabalho foi proceder à análise da problemática do stress, nos profissionais da PSP que constituem a nossa amostra. Para tal, a metodologia utilizada consistiu na aplicação de um conjunto de Questionários, designadamente, “Fontes de Stress”, “Sintomas de Stress”, “Estratégias de C...

  4. O tempo na geografia

    OpenAIRE

    Salvador, Regina

    1998-01-01

    O conceito de tempo está intrinsecamente relacionado com o desenvolvimento do pensamento humano, nas suas produções humanísticas e científicas. Encontramo-lo já nos textos sagrados das "grandes religiões do Livro", como por exemplo, no "Eclesiastes" do Antigo Testamento. O "tempo da criação", a "cronologia" e a "duração" constituem categorias, tanto das Ciências Formais como das Ciências da Natureza. O tempo na Geografia é também um produto das categorias gerais acima ...

  5. Rawls na planini?

    OpenAIRE

    Kurelić, Zoran

    1994-01-01

    Autor prikazuje komunitarističku kritiku Rawlsa, prije svega u obliku koji je izložio Michael Walzer u knjizi "Spheres of Justice". Glavni prigovor Walzera i drugih komunitaraca Rawlsovoj teoriji pravednosti da je ona objektivistička i da stoga predstavlja modernu varijantu platoizma. Nasuprot takvoj poziciji, Walzer inzistira na teoriji pravednosti koja polazi od partikularnih vrijednosti pojedinačnog društva i kulture, te sam nastoji formulirati kritiku američkog društva kao zajednice podvr...

  6. Measurement of exchangeable sodium: 22Na or 24Na

    International Nuclear Information System (INIS)

    A case is made for the use of 22Na in low activities in preference to 24Na for routine diagnostic estimation of exchangeable sodium, and is based chiefly on considerations of availability, cost and radiation dosimetry. A method in which only 37 kBq (1 μCi) 22Na is administered orally is shown to be sufficiently accurate and to possess distinct advantages in terms of cost and convenience with a committed radiation dose no greater than that for a measurement using 24Na. (author)

  7. PROMOCIJA ZDRAVJA NA DELOVNEM MESTU

    OpenAIRE

    Kondić, Vesna

    2015-01-01

    Varnost in zdravje pri delu sta ključna elementa pri zagotavljanju bolj zdravega in daljšega poklicnega življenja. Problem: Delo neposredno vpliva na zdravje, saj ljudje na delovnem mestu preživijo veliko časa, zato je zagotavljanje varnosti in zdravja delavcev pri delu zelo pomemben člen, ki ga mora delodajalec tudi zakonsko upoštevati. Namen: Namen magistrskega dela je proučiti učinkovitost promocije zdravja na delovnem mestu z vidika varovanja zdravja zaposlenih in ozaveščanja zap...

  8. AKUSTIČNA ANTENA NA OSNOVI OPTIČNEGA VLAKNA

    OpenAIRE

    Blatnik, Gregor

    2010-01-01

    Diplomska naloga opisuje princip delovanja vlakenskega optičnega senzorja vibracij z Michelsonovim interferometrom. Predstavljeno je teoretično ozadje delovanja senzorja, načrtovanje ter gradnja elektronskega vezja in izdelava akustične antene. Rezultati meritev so prikazani na računalniku s pomočjo programskega okolja LabVIEW.

  9. A fauna de parasitas do tambaqui, Colossoma macropomum (Cuvier, 1818) (Characiformes: Characidae) do médio rio Solimões, Estado do Amazonas (AM) e do baixo rio Amazonas, Estado do Pará (PA), e seu potencial como indicadores biológicos The fauna of parasites of the tambaqui, Colossoma macropomum (Cuvier, 1818) (Characiformes: Characidae) from middle Solimões River and lower Amazonas River and their potential as biological indicators

    OpenAIRE

    Christina Fischer; José Celso de Oliveira Malta; Angela Maria Bezerra Varella

    2003-01-01

    Foram examinados brânquias, fossas nasais e intestinos de tambaquis (Colossoma macropomum) capturados em duas localidades na Amazônia, próximas aos municípios de Tefé/Coari, no médio rio Solimões, Estado do Amazonas e de Santarém no baixo rio Amazonas, Estado do Pará. Nove espécies de parasitas foram encontradas: três da classe Monogenoidea; Anacanthorus spathulatus, Linguadactyloides brinkmanni e Notozothecium sp.; uma de Trematoda da família Paramphistomidae; uma do filo Acanthocephala, Neo...

  10. Na Cauda do Cometa

    Science.gov (United States)

    Voelzke, M. R.

    2009-01-01

    Quando viam um cometa, os antigos gregos imaginavam uma estrela com uma vasta cabeleira. Não à toa, a palavra deriva do termo koma, que significa cabelo. Constituídos por fragmentos de gelo e gases, os cometas possuem um núcleo sólido, que pode ter vários quilômetros de diâmetro, e uma cauda que sempre aponta na direção contrária ao Sol, devido aos ventos solares. Graças à aparência de pontos luminosos em movimento (ao contrário de outros astros, que parecem estáticos), esses corpos celestes foram interpretados por diferentes povos com muito misticismo, inspirando mitos tanto de boas-novas como de maus presságios. Conheça algumas dessas histórias:

  11. Lula na Veja

    OpenAIRE

    2011-01-01

    Resumo: As instituições da mídia detêm grande poder simbólico nas sociedades contemporâneas. São elas que selecionam quais fatos do cotidiano devem virar notícia, e como essas notícias serão representadas, de forma a potencialmente contribuir para manter ou transformar crenças e atitudes em diferentes áreas da vida. As representações produzidas pela mídia, no entanto, muitas vezes não são isentas de ideologia; sendo, na realidade, moldadas conforme os interesses das instituições que as veicul...

  12. NA48 prototype calorimeter

    CERN Multimedia

    1990-01-01

    This is a calorimeter, a detector which measures the energy of particles. When in use, it is filled with liquid krypton at -152°C. Electrons and photons passing through interact with the krypton, creating a shower of charged particles which are collected on the copper ribbons. The ribbons are aligned to an accuracy of a tenth of a millimetre. The folding at each end allows them to be kept absolutely flat. Each shower of particles also creates a signal in scintillating material embedded in the support disks. These flashes of light are transmitted to electronics by the optical fibres along the side of the detector. They give the time at which the interaction occurred. The photo shows the calorimeter at NA48, a CERN experiment which is trying to understand the lack of anti-matter in the Universe today.

  13. Akcelerace RSA na GPU

    OpenAIRE

    Balogh, Tomáš

    2013-01-01

    Tato bakalářská práce se zabývá implementací obecného algoritmu RSA prostřednictvím Montgomeryho násobení pro grafické karty. Pro vybranou platformu CUDA jsou vytvořeny čtyři verze implementace s cílem dosáhnutí co nejvyššího zrychlení výpočtu v porovnání s výpočtem na procesoru. Zrychlení výpočtu je kromě jiného dosaženo paralelizací aritmetických operací sčítání a násobení velkých čísel.

  14. Investigation on U - O - Na, Pu - O - Na and U,Pu - O - Na phase diagrams

    International Nuclear Information System (INIS)

    The thermochemical interaction between the nuclear fuel (uranium and plutonium mixed oxides) and the sodium has been investigated and particularly the three phase diagrams: U - O - Na; Pu - O - Na; U,Pu - O - Na. High temperature neutron diffraction, microcalorimetry and powder X-ray diffraction were used for the characterization of the compounds synthetized. This study allowed to complete the knowledge about each of these diagrams and to measure some physical and thermal properties on the compounds. The limits on the modelization of the fuel-sodium interaction are discussed from the results of the UO2 - Na reaction

  15. Energy levels of 24Na

    International Nuclear Information System (INIS)

    Four experiments are reported yielding excitation energies, spins, parities, mean lifetimes, γ-ray branching ratios of 24Na. The applied methods include particle-γ angular correlations and Doppler shift attenuation method lifetime measurements. From a 23Na(d,pγ)24Na experiments using a large Ge(Li) γ-detector excitation energies, branching ratios and mean lifetimes are determined. A 26Mg(d,αγ)24Na experiment using a NaI(Te) γ-detector enables the assignment of spins and γ-ray mixing ratios. From a 22Ne(3He,pγ)24Na measurement with a deeply implanted 22Ne target, preliminary data from the γ-decay of levels with Ex = 4 - 6 meV and additional nuclear lifetime data are decided. Finally a 23Na(n,γ)24Na γ-spectrum obtained with thermal neutrons and a Ge(Li) detector enabled the adjustment of some of the level energies. The data from these and other experiments were collected and compared with theory. It turned out that the statistical model of nuclear reactions does not give reliable information about nuclear spin-parity combinations. However recent shell-model calculations of Chung give remarkable agreement for low-lying levels (Ex < 3.3 meV)

  16. Valores na escola

    Directory of Open Access Journals (Sweden)

    Menin Maria Suzana De Stefano

    2002-01-01

    Full Text Available Neste texto pretende-se discorrer sobre valores morais na escola e suas implicações para a formação de professores. Para tanto discutir-se-á, em primeiro lugar, e brevemente, o que são valores morais, ou éticos, e como a escola pode situar-se em relação a eles. Em seguida, serão relatadas algumas observações a respeito de valores de professores e práticas daí decorrentes. São comentados resultados de pesquisa que ilustram a transmissão de valores de forma doutrinal e a educação moral e cívica tal como realizada na ditadura militar, e, por outro lado, a posição relativista e/ou de laissez-faire que certas escolas podem adotar, metodologicamente, sobre a educação em valores. Finalmente, defender-se-á a idéia de que é necessária uma discussão sobre valores pelos diversos membros da escola e uma opção por uma metodologia para ensiná-los, seja os professores, em sua formação inicial e continuada, seja os alunos. A teoria de desenvolvimento moral de Jean Piaget será apresentada como uma referência possível para a educação em valores. Exemplos de situações escolares de conflito de valores entre direção, pais e alunos são discutidas para ilustrar como uma escola pode adotar um procedimento democrático de educação em valores, que se apresenta como um terceiro caminho possível de educação moral nas escolas, além das posições doutrinárias ou relativistas.

  17. Efeito do colesterol na atividade da (Na+/K+) ATPase

    OpenAIRE

    Oliveira, Liliana Patrícia Alves

    2012-01-01

    O alumínio é o metal mais abundante na crosta terrestre sendo a sua exposição cada vez maior nas sociedades industrializadas. Numa sociedade cada vez mais envelhecida onde o número de casos de doenças neurodegenerativas tendem a aumentar, parece importante esclarecer os mecanismos celulares da neurotoxicidade do alumínio de forma a prevenir os seus efeitos. Estudos in vivo e in vitro indicam que a exposição a alumínio inibe a atividade da (Na+/K+)ATPase, proteína responsável...

  18. A aposta na filosofia

    Directory of Open Access Journals (Sweden)

    Márcio Suzuki

    2011-12-01

    Full Text Available Para Hume, filosofar é uma atividade semelhante às demais ocupações humanas. A decisão que leva à atividade filosófica é menos resultado de uma argumentação teórica do que fruto de um cálculo prático, que é entendido como uma caça ou um jogo. O objetivo deste trabalho será o de mostrar que no jogo filosófico perde quem joga sério demais. A aposta na filosofia tem que passar pelo bom humor e pela diversão: uma resposta a Pascal?For Hume, philosophy is in itself neither more nor less important than other human activities. On the contrary, it can be explained from its resemblance with game and hunting. If one chooses to dedicate himself to philosophy, his decision is not the consequence of logical reasoning, but depends on practical evaluation, which has something to do with gambling. The following text tries to show that in philosophy, like in other games, the loser will be the one who plays too earnestly. The philosophical game requires good humour and some relaxation: Is this a good answer to Pascal's pari?

  19. O SUBLIME NA MODERNIDADE

    Directory of Open Access Journals (Sweden)

    Martha de Almeida

    2009-03-01

    Full Text Available A obra Uma investigação filosófica sobre a origem de nossas idéias do sublime e dobelo, do sensualista inglês Edmund Burke (1757, data as origens do sublime na Modernidade. Nosublime ocorre é um prazer ligado à dor, um "horror delicioso" que sentimos quando acreditamosque estamos em perigo sem que isso esteja ocorrendo realmente. Em O mundo como Vontade erepresentação Schopenhauer assume as influências que sofreu de Kant no que diz respeito à suainterpretação sobre o belo e o sublime, porém difere dele quanto à natureza dessa impressão. ParaSchopenhauer a experiência estética pressupõe a dissolução da subjetividade num movimento decontemplação das idéias livre do querer imposto pela vontade individual. As idéias deSchopenhauer influenciaram a estética do Nietzsche de O nascimento da tragédia.

  20. Colonization of the Corumbá Reservoir (Corumbá River, Paraná River Basin, Goiás State, Brazil by the "lambari" Astyanax altiparanae (Tetragonopterinae; Characidae

    Directory of Open Access Journals (Sweden)

    Rosa Maria Dias

    2005-05-01

    Full Text Available This work aimed to determine which population features were important to the colonization process of Astyanax altiparanae in the Corumbá Reservoir. The species presented wide spatial-temporal distribution, caught in all months and sites. Higher CPE values were recorded upstream from the reservoir during the filling phase. In this phase, reproductive activity was intense upstream and moderate in the tributaries. However, a fall in abundance of juveniles was observed after the formation of the reservoir. Among the most relevant population features to grant a successful colonization were wide geographic distribution, ability to occupy and spawn in lentic habitats and feeding flexibility.O presente trabalho visa entender quais as características populacionais envolvidas no processo de colonização do Astyanax altiparanae no reservatório de Corumbá. As amostragens foram mensais, de março/1996 a fevereiro/2000, compreendendo as fases pré ((Março/1996-Agosto/1996, enchimento (Setembro/1996-Fevereiro/1997 e pós enchimento (Março/1997-Fevereiro/2000, em 11 estações. A abundância foi obtida através da captura por unidade de esforço (CPUE. As variações espaciais e temporais na reprodução foram determinadas através do índice de atividade reprodutiva. A espécie apresentou ampla distribuição espaço temporal, sendo capturada em todos os meses e locais. Os maiores valores de CPUE foram registrados a montante, durante a fase de enchimento. Al��m disso, nesta fase, a reprodução foi muito intensa a montante do reservatório e moderada nos tributários. Entretanto, constatou-se uma queda na abundância de jovens após a formação do reservatório. Dentre as características populacionais mais relevantes para a colonização, destacam-se a ampla distribuição geográfica, habilidade de ocupar e reproduzir em habitats lênticos, além da flexibilidade alimentar.

  1. Studies on NaXe Clusters

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The chemical shift of 23Na in excimer NaXe was measured by using nuclear magnetic resonance (NMR) spectra, which is in good agreement with the theoretical value obtained by ab initio calculations. The bond length, dissociation energy, dipole of NaXe and Mulliken charges at Na and Xe in NaXe were calculated, respectively. The spectra of ultraviolet (UV) fluorescence and surface-enhanced Raman scattering of NaXe were also measured.

  2. VPLIV MEDIJEV NA PORAST KRIMINALITETE

    OpenAIRE

    Plešivčnik, Petra

    2011-01-01

    V diplomski nalogi sem podrobneje predstavila vpliv medijev na kriminaliteto in skušala ugotoviti ali imajo mediji kakšen vpliv na porast le-te. V prvem poglavju sem se osredotočila na zastavitev nekaterih hipotez skozi diplomsko nalogo, nato pa nadaljevala z razvojem medijev, razčlenitvijo množičnih medijev in predstavila nekaj njihovih učinkov. V tretjem poglavju sem povzela korelacijo med nasiljem in posameznikom, ter bolj konkretno nadaljevala s predstavitvijo same kriminalitete v medijih...

  3. VPLIV KULTURE NA MOTIVACIJO ZAPOSLENIH

    OpenAIRE

    Gjergjek, Andreja

    2012-01-01

    Pri diplomskem delu smo se osredotočili na proučevanje kulture in motivacije. Opredelili smo pojem kulture in njene sestavine. V okviru nacionalne kulture smo opredelili dela Hofsteda, Trompenaarsa, Halla, Ronena in Shenkara. V nadaljevanju smo opredelili pojem motivacije in predstavili motivacijske dejavnike. Pojasnili smo tudi vpliv kulture na motivacijo zaposlenih. Kultura je način ţivljenja pripadnikov neke druţbe. Obsega celotno področje idej, navad, prepričanj, jezika, vzorcev vedenj...

  4. PLESNE DELAVNICE NA RAZREDNI STOPNJI

    OpenAIRE

    Perša, Simona

    2012-01-01

    V diplomskem delu z naslovom Plesne delavnice na razredni stopnji so predstavljene težave, s katerimi se srečujejo učenci 1. in 2. vzgojno-izobraževalnega obdobja pri učenju plesa ter poklic plesnega pedagoga. V teoretičnem delu je osvetljena vloga plesa v šolah, vpliv in pomen plesa na otrokov razvoj, ples kot dejavnost otrok in poučevanje plesa z vidika plesnega pedagoga. Praktični del ponuja izdelane, preizkušene, analizirane priprave za plesne delavnice na razredni stopnji. V okviru plesn...

  5. VPLIV OSEBNOSTI NA STILE VODENJA

    OpenAIRE

    Vučak, Petra

    2009-01-01

    Nekatere naše vrline krasijo zlate lastnosti, druge pa kvarijo sivi odtenki. Če bi ljudje razumeli in spoznali svojo osebnost, ter osebnostne tipe drugih ljudi, bi se problemi pri komunikaciji občutno zmanjšali. Takrat bi namreč lažje uvideli, zakaj je nekdo reagiral na način, kot je ali zakaj je nekdo dejal to, kar je. Smisel tega je, da spoznamo svoje dobre lastnosti, ki jih lahko še bolj razvijemo, slabe pa poskušamo nadzorovati in tako zmanjšati njihov vpliv. Iskanje uspešnih in učink...

  6. Uwarunkowania procesu transformacji na Ukrainie

    OpenAIRE

    Michalski, Tomasz; Kuczabski, Aleksander

    2014-01-01

    W pierwszej części artykułu omówiono główne czynniki (wewnętrzne i zewnętrzne), które wpłynęły na procesy transformacji ustrojowej w europejskich i zakaukaskich krajach postkomunistycznych. W drugiej części artykułu skupiono się na czynnikach, które zadecydowały, że jak dotychczas proces transformacji ustrojowej na Ukrainie jest bardzo słabo zaawansowany.

  7. TRGOVANJE NA IZBRANEM TRGU - FOREX

    OpenAIRE

    Ambrož, Sabina

    2012-01-01

    V delu diplomskega seminarja je obravnavana tematika trgovanja na valutnem trgu. Trgovanje z valutami je v zadnjem desetletju doseglo velik razvoj, močno pa je narasla tudi priljubljenost valutnega trga Forex, saj se zaradi enostavnega pristopa in možnosti velikih zaslužkov zanj odloča vse več posameznikov. V teoretičnem delu povzamemo ključne elemente, ki jih mora poznati začetnik na tem trgu. V empiričnem delu pa poskušamo na praktičnem primeru pokazati primer trgovanja s trendom in vstopom...

  8. Protozoários e metazoários parasitos do cardinal Paracheirodon axelrodi Schultz, 1956 (Characidae, peixe ornamental proveniente de exportador de Manaus, Estado do Amazonas, Brasil - DOI: 10.4025/actascibiolsci.v31i1.872 Protozoan and metazoan parasites of the cardinal Paracheirodon axelrodi Schultz, 1956 (Characidae, ornamental fish from Manaus, Amazonas State, Brazil - DOI: 10.4025/actascibiolsci.v31i1.872

    Directory of Open Access Journals (Sweden)

    Maria Leonora Silva Brito

    2009-04-01

    Full Text Available Os estudos sobre a parasitofauna de peixes ornamentais cultivados são de grande relevância para o conhecimento das espécies de parasitos, permitindo interferência em sua proliferação para evitar epizootias e, consequentemente, perdas econômicas na criação. O presente estudo investigou a prevalência e intensidade de parasitos protozoários e metazoários em cardinal Paracheirodon axelrodi (N = 89, mantidos em tanques de um exportador de Manaus, Estado do Amazonas, Brasil. Dos espécimes de P. axelrodi necropsiados, 65,2% (N = 58 estavam parasitados pelos Protozoa Piscinoodinium pillulare (3,4% e Ichthyophthirius multifiliis (7,9%, Monogenoidea Gyrodactylus sp. (42,7%, Nematoda Procamallanus sp. (23,6% e Trematoda (1,1%. Gyrodactylus sp. e Procamallanus sp., porém, foram os parasitos de maior prevalência e intensidade. Apesar da elevada prevalência de parasitismo em P. axelrodi durante a sua permanência no exportador, a intensidade de protozoários e metazoários foi baixa pelo manejo profilático nos tanques. Os resultados demonstram que os cuidados com tratamento e profilaxia são de extrema importância na aquicultura de peixes ornamentais.Studies regarding parasites fauna in farmed ornamental fish are of great relevance for knowledge of the parasites species, allowing interference in their proliferation to avoid epizooties and consequently, economical losses. This study was designed to investigate the protozoan and metazoan parasites prevalence and intensity on cardinal Paracheirodon axelrodi, maintained in tanks of an exporter from Manaus, Amazonas State, Brazil. On necropsy 65.2% of P. axelrodi were found parasitized by Piscinoodium pillulare, Ichthyophthirius multifiliis (Protozoa, Gyrodactylus sp. (Monogenoidea, Procamallanus sp. (Nematoda and Trematoda. Gyrodactylus sp. (42.7% and Procamallanus sp. (23.6% were the parasites of greatest prevalence, and protozoan I. multifiliis was the parasite of greatest mean intensity (4

  9. Results from NA61/SHINE

    Directory of Open Access Journals (Sweden)

    Unger M.

    2013-06-01

    Full Text Available In this paper we summarize recent results from NA61/SHINE relevant for heavy ion physics, neutrino oscillations and the interpretation of air showers induced by ultra-high energy cosmic rays.

  10. Na via do Behemoth

    Directory of Open Access Journals (Sweden)

    Gérard Rabinovitch

    2008-06-01

    Full Text Available O momento nazista permanece um enigma impensado de que a cultura contemporânea continua cativa. O autor levanta a hipótese de que a persistência desse enigma e seus estragos duráveis se devem à insistência dos pensamentos político, sociológico e filosófico em construírem o nazismo à luz da metáfora hobbesiana do Leviatã. Propõe retomar a questão do nazismo sob a perspectiva do Behemoth, antônimo do Leviatã. Para tanto, sugere a necessidade de retornar a Freud e à psicanálise, balizas de um possível novo pensamento do político que escrutine a destrutividade nazista. Propõe ainda sondar as homologias entre nazismo, corjas e máfias, com base na figura da " heroicização da violência" que lhes seria comum. E avança um modelo " econômico" : a quimera, suscetível de capturar o caráter heterotópico e heterocrônico de sua construção criminosa.The paths of Behemoth. The Nazi moment remains as the thoughtless enigma of which contemporary culture is still captive. The author raises the hypothesis where the persistency of this enigma and its durable damages are due to the insistence of the political, social and philosophical thoughts in building the Nazism at the view of the Hobbesian metaphor of Leviathan. It is here proposed to resume the Nazism matter under Behemoth's perspective, antonym to Leviathan. For such, it is suggested a necessity to look back at Freud and the psychoanalysis, structured by a possible new political thought which scrutinizes the destructivity of the Nazism. It is also here proposed to gaze at the homologies between Nazism, mafias and gangs, with a base in the figure of " violence as a heroically act" that are their common ground. The author also advances an economical model: the chimera susceptible to capture the heterotopic and heterochronic character of its criminal construction.

  11. Utjecaj spola na pacijentovu procjenu nadomjestaka na gornjim prednjim zubima

    OpenAIRE

    KRISTEK ZORIĆ, Ela; Žagar, Maja; KNEZOVIĆ ZLATARIĆ, Dubravka

    2014-01-01

    Svrha rada: Željelo se istražiti zadovoljstvo pacijenata izgledom nadomjestaka na gornjim prednjim zubima i ustanoviti postoji li razlika u procjeni njihova izgleda s obzirom na spol. Materijali i metode: Dvjesto pacijenata ocjenjivalo je boju, anatomski oblik i površinsku teksturu nadomjestaka (kompozitni ispuni, fasetirane krunice, metalkeramičke i potpuno keramičke krunice) uspoređujući ih sa susjednim prirodnim zubima. Podatci su izraženi u prosječnim ocjenama boje, anatomskog oblika i po...

  12. Corpo e sexualidade na gravidez

    Directory of Open Access Journals (Sweden)

    Natalúcia Matos Araújo

    2012-06-01

    Full Text Available Estudo etnográfico que teve como objetivo compreender como as gestantes vivenciam os processos fisiológicos do seu corpo durante a gestação e a sua repercussão na sexualidade. A pesquisa envolveu sete mulheres residentes em bairro popular de São Paulo. Na coleta de dados, utilizou-se observação participante e entrevista com questões norteadoras. Os dados foram apresentados na forma de narrativa e posteriormente organizados nas categorias: Percebendo as transformações corporais; Convivendo com as mudanças no corpo; Sentimentos e sensações na vida sexual durante a gestação e imaginando o corpo e a sexualidade após a gestação. As mulheres referiram-se às transformações do corpo como desconfortos e expressaram a preocupação de que fossem definitivas. Expressaram o desejo de que, após o parto, o corpo volte a ser como era e que volte a sentir desejo sexual. O reconhecimento destes fatos constitui-se numa ferramenta primordial na adequação das práticas profissionais.

  13. All new for NA62

    CERN Multimedia

    Antonella Del Rosso

    2012-01-01

    This week sees the start of the first run of the new NA62 experiment. This will be a unique opportunity for the collaboration to test its new beam, new detectors and new data acquisition system before the physics run in 2014. Speaking to the Bulletin, the NA62 technical coordinator Ferdinand Hahn shares the many challenges that the various teams faced to be on time for beam. Ready, steady, start!   A Large Angle Veto detector (white) in place in the NA62 decay volume (blue). With components from almost all the detectors in place downstream of the decay point of the mother particles – the kaons – and of the KTAG detector that tags the kaons before they decay, NA62 is ready for its first technical run. This unique run will test all the equipment as well as the trigger and the data acquisition systems. “This year, we will have about five weeks of beam from the SPS before the long shutdown of all the CERN machines,” says Ferdinand Hahn, NA62 Technical Co-...

  14. EVALUACIÓN DE NUEVA TECNOLOGÍA PARA MITIGAR LAS ESPINAS INTRAMUSCULARES EN FILETES DE CACHAMA Piaractus brachypomus (Pisces: Characidae EVALUATION OF NEW TECHNOLOGY TO MITIGATE INTRAMUSCULAR THORNS IN CACHAMA FILLETS

    Directory of Open Access Journals (Sweden)

    Héctor Suárez Mahecha

    2009-06-01

    Full Text Available La presencia de espinas intramusculares en filetes de cachama dificulta la comercializacion y demanda por parte de los consumidores. Hasta el momento no existen tecnologías que permitan ofrecer filetes de cachama que garanticen condiciones de seguridad frente a las espinas. El objetivo del presente trabajo fue evaluar una nueva tecnología para mitigar la presencia de espinas en filetes de cachama Piaractus brachypomus empacados al vacío y almacenados durante 30 días a 3±0,5 °C. A filetes en presentación lateral interna fueron realizados cortes profundos, paralelos y perpendiculares al eje longitudinal, a una distancia de 3 mm entre cada corte, en sentido dorso-ventral. Fueron realizados análisis microbiológico, fisicoquímico y sensorial. El análisis microbiológico muestra condiciones aceptables para el final del periodo de almacenamiento. Los valores obtenidos para este periodo, fueron de log UFC/g 7,07; 4,7 y 1100 NMP, 18 NMP para organismos psicrotrofilos, mesófilos, coliformes totales y coliformes fecales, respectivamente. No fue determinada presencia de Salmonella ni de organismos sulfito reductores. El análisis fisicoquímico mostró valores de 39,36 para BVT-N; 6,22 pH; 3,3% de pérdida de humedad 1,52; ácido tiobarbitúrico mg MA/kg. El efecto del sajado no incrementó los valores de oxidación de ácidos grasos, ni aumentó las BVT que pudiesen indicar degradación de la proteína. En el análisis sensorial los filetes sometidos a cocción fueron rechazados solamente a partir del día 25 del periodo de almacenamiento, para los atributos aroma y sabor. Durante la evaluación los panelistas no encontraron presencia de espinas, mostrando que la temperatura de cocción utilizada y los cortes en las espinas, permiten degradar la espina intramuscular evitando que sea detectada.The presence of pin bones in cachama fillets makes marketing and demand difficult by the consumers. So far, there are no technologies to provide cachama

  15. gigapanorama of NA 62 cavern

    CERN Multimedia

    Brice, Maximilien

    2015-01-01

    The image shows the new rare Kaon decay experiment at CERN, called NA62. The NA62 experiment is 270 metres long and includes a 120-metre-long vacuum tank, shown here, housing several of the particle detectors. (Note: the experiment axis is a straight line, the curving of the tank is an optical effect of the photo.) Kaons are particles that decay into lighter elementary particles. The kaon decay processes are mostly well known, except for some very rare decay modes. For example, NA62 is investigating a rare decay predicted by the Standard Model in which a kaon decays into one pion and two neutrinos. This process occurs only once every 10 billion decays. The understanding of such ultra-rare decays are of great importance because they test the Standard Model in energy ranges not accessible by direct measurements. They are therefore complementary to the measurements at the LHC. ultra high definition on demand (photolab@cern.ch).

  16. Criatividade na Gestalt–terapia

    Directory of Open Access Journals (Sweden)

    Patrícia Albuquerque Lima

    2009-04-01

    Full Text Available Como se conceitua criatividade na teoria da Gestalt–terapia? Qual o papel e a função da criatividade nesta abordagem? O que se considera como um comportamento criativo no senso comum é tão diferente do que compreendemos, na abordagem gestáltica, como criatividade? Estas são algumas das perguntas sobre as quais buscaremos transcorrer ao longo deste artigo. Partimos de simples perguntas, pois talvez um bom recurso para se “tratar” da criatividade seja a curiosidade. Para isto, iremos apresentar a contribuição de alguns autores que discorreram sobre o tema da criatividade em suas obras, iniciando por Kurt Goldstein e sua Teoria Organísmica, que consideramos o principal substrato teórico para se pensar a criatividade na Gestalt–terapia.

  17. OGLAŠEVANJE NA FACEBOOKU

    OpenAIRE

    Renko, Katica

    2013-01-01

    V magistrskem delu smo se seznanili z oglaševanjem na Facebooku. S pregledom gradiva, ki nam je ponujeno, smo preverili pogoje, načine, oblike … oglaševanja, ki pa smo jih s pregledom situacije v praksi preverili in dopolnili. Ob zaključku dela lahko rečemo, da je oglaševanje preko FB enostavnejše, cenejše, dostopnejše, omogoča nam ažurnost in samo komunikacijo z naslovniki, ki so potencialni kupci naših ponudb. Množični mediji nam omogočajo mnogotero obliko oglaševanja. Izbrana oblika ponuja...

  18. Primjena svjetlovodne tehnologije na brodovima

    OpenAIRE

    Jurdana, Irena

    2008-01-01

    Svjetlovodna tehnologija je zbog svojih prednosti u prijenosu podataka i jednostavnosti izvedbe nad klasičnim tehnologijama prijenosa informacija u proteklih dva desetljeća potpuno prevladala na području telekomunikacijskih i računalnih mreža. Osim u komunikacijskim sustavima svjetlovodi su se počeli primjenjivati i kao senzori za razne neelektrične i električne veličine. U oba slučaja njihove vrlo male dimenzije, jednostavno instaliranje, neosjetljivost na vanjske elektromagnetske utjecaje, ...

  19. β decay of 32Na

    International Nuclear Information System (INIS)

    The β-decay of 32Na has been studied using β-γ coincidences. New transitions and levels are tentatively placed in the level scheme of 32Mg from an analysis of γ-γ and β-γ-γ coincidences. The observation of the indirect feeding of the 2321 keV state in 32Mg removes some restrictions previously placed on the spin assignment for this state. No evidence of a state at 2117 keV in 32Mg is found. Previously unobserved weak transitions up to 5.4 MeV were recorded but could not be placed in the decay scheme of 32Na

  20. KAZNIVA DEJANJA NA CIVILNIH LETALIH

    OpenAIRE

    Vöröš, Tina

    2014-01-01

    Letalska industrija je ena izmed najhitreje rastočih industrij na svetu in je še kako pomembna v življenju mnogih, ki potujejo. Zaradi prisotnosti terorizma v letalstvu in vseh preteklih napadov na civilna letala, ki so terjali številne žrtve, je varovanje pred dejanji nezakonitega vmešavanja v civilno letalstvo ena izmed glavnih prioritet vseh letališč in letalskih prevoznikov ter nekaterih mednarodnih organizacij. Varnost letala pa znajo ogroziti tudi neposlušni in napadalni potniki, ki iz ...

  1. IMPLEMENTACIJA MULTIMEDIJSKEGA TERMINALA NA FOV

    OpenAIRE

    Ažman, Andrej

    2011-01-01

    Z diplomskim delom smo implementirali tehnološko rešitev Infomat, to je touch screen monitor z aplikacijo, s katero smo izpopolnili in dopolnili obstoječi informacijski sistem na FOV z uporabo drugačne oz. dodatne tehnologije. Študenti in profesorji FOV imajo informacijski sistem, ki je enostaven in ima odgovore na veliko koristnih vprašanj. Z vpeljavo drugačne tehnologije smo uporabnikom omogočili, da dobijo informacije tudi tisti, ki nimajo lastnega računalnika, ter uporabnikom omogočili...

  2. Cistična fibroza

    OpenAIRE

    Tješić-Drinković, Dorian; Tješić-Drinković, Duška

    2015-01-01

    Cistična fibroza je najčešća nasljedna, autosomalno recesivna bolest koja utječe na dužinu života u bijeloj rasi. Danas je prepoznato više stotina mutacija uz veliku varijaciju ekspresije bolesti. Prepoznavanje bolesnika i nosilaca mutacije pruža mogućnost genskog savjetovanja i prevencije bolesti. Rano dijagnosticiranje, sve češće pomoću neonatalog probira, omogućuje rani multidisciplinarni terapijski pristup uz značajno produljenje životnog vijeka i sve većeg broja odraslih bolesnika. Dužin...

  3. Mobbing - zlostavljanje na radnome mjestu

    OpenAIRE

    Šoljan, Ivana; Josipović-Jelić, Željka; Jelić Kiš, Anita

    2008-01-01

    Mobbing odnosno zlostavljanje na radnome mjestu predstavlja neprijateljsku i neetičnu komunikaciju, koja je sustavno usmjerena od jednoga ili više pojedinaca prema, uglavnom, jednom pojedincu, koji je zbog mobbinga gurnut u poziciju u kojoj je bespomoćan ili se ne može obraniti te držan u njoj s pomoću stalnih zlostavljačkih (mobinških) aktivnosti. U članku je obrađeno nekoliko bitnih značajki zlostavljanja: ponašanja karakteristična za zlostavljača, organizacijski uzroci pojave, konflikt u p...

  4. Criatividade na Gestalt–terapia

    OpenAIRE

    Patrícia Albuquerque Lima

    2009-01-01

    Como se conceitua criatividade na teoria da Gestalt–terapia? Qual o papel e a função da criatividade nesta abordagem? O que se considera como um comportamento criativo no senso comum é tão diferente do que compreendemos, na abordagem gestáltica, como criatividade? Estas são algumas das perguntas sobre as quais buscaremos transcorrer ao longo deste artigo. Partimos de simples perguntas, pois talvez um bom recurso para se “tratar” da criatividade seja a curiosidade. Para isto, iremos apresentar...

  5. VPLIV VODJE NA RAZVOJ SODELAVCEV

    OpenAIRE

    Fabjan, Jožica

    2011-01-01

    Razvoj in uspešnost podjetja sta tesno povezana z razvojem vseh, ki v podjetju delajo. Ljudje, ki so opremljeni z ustreznimi znanji, sposobnostmi in veščinami, so strateškega pomena, ter zagotovo eden ključnih dejavnikov konkurenčnosti in uspešnosti sodobnega časa. Odločilno vlogo pri usmerjenem razvoju ljudi v organizaciji, strokovnjaki pripisujejo vodjem na vseh hierarhičnih ravneh organizacijske strukture podjetja. V diplomski nalogi, ki je razdeljena na teoretični in empirični del smo...

  6. Study of the Na-Na2O-Na2CO3-C system phase diagram

    International Nuclear Information System (INIS)

    The aim of this study is to provide a contribution to the understanding of the sodium-carbon-oxygen ternary system in the sodium rich corner. The basic experimental technique used is differential thermal analysis (DTA) but it has been completed by quenching, X ray and chemical analysis methods. The proposed phases diagram implies that Na-Na2O-Na2CO3-C system is reciprocal ternary system. Temperature of stable pairs reversal is 690 deg. C. The stable pair is Na-Na2CO3 at elevated temperature and Na2O-C at low temperature. (author)

  7. Distribuição e alimentação de duas espécies simpátricas de piranhas Serrasalmus maculatus e Pygocentrus nattereri (Characidae, Serrasalminae do rio Ibicuí, Rio Grande do Sul, Brasil Distribution and feeding of two sympatric species of piranhas Serrasalmus maculatus and Pygocentrus nattereri (Characidae, Serrasalminae of the Ibicuí river, State of Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Everton R. Behr

    2008-12-01

    Full Text Available Duas espécies de piranhas ocorrem no rio Ibicuí, um dos principais afluentes do rio Uruguai. Com o objetivo de analisar a distribuição e a alimentação destas espécies, foram realizadas coletas de dezembro de 1999 a janeiro de 2002, utilizando-se diferentes artes de pesca em três pontos do rio, sendo que cada ponto foi amostrado em dois ambientes (lêntico e lótico. Foram capturados 203 indivíduos de Serrasalmus maculatus Kner, 1858 e 86 de Pygocentrus nattereri Kner, 1858, sendo que a maior captura de ambas as espécies ocorreu no ambiente lêntico e próximo ao rio Uruguai, onde P. nattereri parece estar mais concentrada. O número de exemplares capturados por horário não apresentou variações significativas em P. nattereri enquanto que S. maculatus apresentou a maior captura na revisão da meia-noite. Juvenis de S. maculatus (2-4 cm de comprimento padrão consumiram preferencialmente nadadeiras e insetos. Nas demais classes de tamanho de ambas as espécies, restos de peixes foi o alimento predominante, havendo sobreposição alimentar intra e interespecífica nas maiores classes (8-16 cm e >16 cm de comprimento padrão. Não foram constatadas diferenças no índice de repleção entre os horários e os ambientes para as duas espécies.Two species of piranhas occur in the Ibicuí River, one of the main tributaries of the Uruguay River in southern Brazil, Serrasalmus maculatus Kner, 1858 and Pygocentrus nattereri Kner, 1858. In order to analyze the distribution and feeding habits of these species we conducted collecting expeditions from December 1999 to January 2002, using a variety of fishing gears in three sites along the river, both in lentic and lotic habitats. A total of 203 individuals of S. maculatus and 86 of P. nattereri were caught, mostly in lentic habitats and closer to the Uruguay River, were P. nattereri seems to be more concentrated. The number of individuals captured at different times did not show variation in P

  8. System Na3VO4-Na4V2O7-Na2WO4

    International Nuclear Information System (INIS)

    State diagrams of sodium-orthovanadate-sodium tungstate, sodium pyrovanadatesodium tungstate systems and crystallization surface of sodiumorthovanadate-sodium pyrovanadate-sodium tungstate system were studied. Na5VWO8 compound forms in sodium orthovanadate-sodium tungstate system in solid state. Congruently melting Na6V2WO11 compound forms in sodium pyrovanadate-sodium tungstate system. Liquidus diagram of sodium orthovanadate-sodium pyrovanadate-sodium tungstate system was constructed. Compositions and melting points of ternary eutectic points were determined. 4 refs.; 3 figs.; 3 tabs

  9. Glavni karakteristiki na igraornite podracja

    OpenAIRE

    Janevski, Vladimir

    2010-01-01

    koga stanuva zbor za igraornite podracja vo taa smisla se misli i na etnografskite karakteristiki vo Makedonija. Vo Makedonija postojat pet igraorni podracja i toa: Zapadnoto igraorno podracje, Jugozapadnoto igraorno podracje, juznoto igraorno podracje, Istocnoto igraorno podracje i severnoto igraorno podracje.

  10. NA49: lead ion collision

    CERN Multimedia

    1995-01-01

    This is an image of an actual lead ion collision taken from tracking detectors on the NA49 experiment, part of the heavy ion project at CERN. These collisions produce a very complicated array of hadrons as the heavy ions break up. It is hoped that one of these collisions will eventually create a new state of matter known as quark-gluon plasma.

  11. NA49: lead ion collision

    CERN Multimedia

    1995-01-01

    This is an image of an actual lead ion collision taken from the NA49 experiment, part of the heavy ion project at CERN. These collisions produce a very complicated array of hadrons as the heavy ions break up. It is hoped that one of these collisions will eventually create a new state of matter known as the quark-gluon plasma.

  12. NA60 frees the quarks

    CERN Multimedia

    2003-01-01

    Fitted with new state-of-the-art silicon detectors, NA60 is prepared to study the phase transition from confined hadronic matter to a deconfined (free) quark-gluon plasma, a state of matter which probably existed an instant after the Big Bang.

  13. VPLIV VODENJA NA ZAUPANJE ZAPOSLENIH

    OpenAIRE

    Polajšer, Jolanda

    2015-01-01

    Zaupanje je osnovni in izjemno pomembni dejavnik dobrega sodelovanja. Diplomsko delo izpostavi pomen zaupanja za delovanje moderne organizacije. V diplomskem delu tudi ugotavljamo, kakšen vpliv ima lahko stil vodenja na prisotnost zaupanja podrejenih v nadrejene. Ugotovili smo, da obstaja pomembna korelacija med vodenjem in stopnjo zaupanja.

  14. NA62: Hidden Sector Physics

    CERN Document Server

    Cesarotti, Carissa Joyce

    2016-01-01

    Modern experimental physics is often probing for new physics by either finding deviations from predictions on extremely precise measurements, or by looking for a new signal that cannot be explained with existing models. The NA62 experiment at CERN does the former by measuring the ultra-rare decay $K^+ \\rightarrow \\pi^+ \

  15. DEJAVNIKI, KI VPLIVAJO NA ZVESTOBO KUPCA

    OpenAIRE

    Begelj, Nina

    2014-01-01

    V diplomski nalogi smo raziskali kateri dejavniki kakovosti storitev so pomembni za kupčevo zvestobo. Dejavnike smo določili na podlagi pregleda teoretičnih osnov in jih vključili v spletno anketo, na katero je odgovorilo 158 anketirancev. Na podlagi analiz smo ugotovili pomembnost dejavnikov in medsebojne povezave med dejavniki kakovosti in dejavniki zvestobe. Rezultati ankete kažejo na veliko pomembnost dejavnikov, ki se nanašajo na vedenje in urejenost zaposlenih, ter na cenovno stabiln...

  16. Na+,K+-ATPase Na+ affinity in rat skeletal muscle fiber types

    DEFF Research Database (Denmark)

    Kristensen, Michael; Juel, Carsten

    2010-01-01

    Previous studies in expression systems have found different ion activation of the Na(+)/K(+)-ATPase isozymes, which suggest that different muscles have different ion affinities. The rate of ATP hydrolysis was used to quantify Na(+),K(+)-ATPase activity, and the Na(+) affinity of Na(+),K(+)-ATPase......Previous studies in expression systems have found different ion activation of the Na(+)/K(+)-ATPase isozymes, which suggest that different muscles have different ion affinities. The rate of ATP hydrolysis was used to quantify Na(+),K(+)-ATPase activity, and the Na(+) affinity of Na...

  17. The NA62 trigger system

    International Nuclear Information System (INIS)

    The main aim of the NA62 experiment (NA62 Technical Design Report, 〈http://na62.web.cern.ch/NA62/Documents/TDFulldocv1.pdf〉 [1]) is to study ultra-rare Kaon decays. In order to select rare events over the overwhelming background, central systems with high-performance, high bandwidth, flexibility and configurability are necessary, that minimize dead time while maximizing data collection reliability. The NA62 experiment consists of 12 sub-detector systems and several trigger and control systems, for a total channel count of less than 100,000. The GigaTracKer (GTK) has the largest number of channels (54,000), and the Liquid Krypton (LKr) calorimeter shares with it the largest raw data rate (19 GB/s). The NA62 trigger system works with 3 trigger levels. The first trigger level is based on a hardware central trigger unit, so-called L0 Trigger Processor (L0TP), and Local Trigger Units (LTU), which are all located in the experimental cavern. Other two trigger levels are based on software, and done with a computer farm located on surface. The L0TP receives information from triggering sub-detectors asynchronously via Ethernet; it processes the information, and then transmits a final trigger decision synchronously to each sub-detector through the Trigger and Timing Control (TTC) system. The interface between L0TP and the TTC system, which is used for trigger and clock distribution, is provided by the Local Trigger Unit board (LTU). The LTU can work in two modes: global and stand-alone. In the global mode, the LTU provides an interface between L0TP and TTC system. In the stand-alone mode, the LTU can fully emulate L0TP and so provides an independent way for each sub-detector for testing or calibration purposes. In addition to the emulation functionality, a further functionality is implemented that allows to synchronize the clock of the LTU with the L0TP and the TTC system. For testing and debugging purposes, a Snap Shot Memory (SSM) interface is implemented, that can work

  18. Saúde na escola...Saúde na comunidade

    OpenAIRE

    Nunes, Carlos Manuel Domingues Rocha

    2011-01-01

    Este relatório tem como foco de estudo, um conjunto de actividades implementadas em contexto escolar e direcciona o projecto de intervenção na comunidade para as acções relacionadas com a promoção da higiene oral e corporal nos alunos a frequentar o 1º ano do 1º ciclo do ensino básico e jardins-de-infância do Agrupamento de Escolas de Gondomar. O trabalho desenvolvido tem como sustentáculo o estágio de intervenção na comunidade realizado durante a frequência do Curso de Pós-Licenciatura de...

  19. Na3DyCl6

    Directory of Open Access Journals (Sweden)

    Christian M. Schurz

    2011-05-01

    Full Text Available Single crystals of the title compound, trisodium hexachloridodysprosate, Na3DyCl6, were obtained as a by-product of synthesis using dysprosium(III chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4°] is isotypic with the mineral cryolite (Na3AlF6 and the high-temperature structure of the Na3MCl6 series, with M = Eu–Lu, Y and Sc. The isolated, almost perfect [DyCl6]3− octahedra are interconnected via two crystallographically different Na+ cations: while one Na+ resides on centres of symmetry (as well as Dy3+ and also builds almost perfect, isolated [NaCl6]5− octahedra, the other Na+ is surrounded by seven chloride anions forming a distorted [NaCl7]6− trigonal prism with just one cap as close secondary contact.

  20. VPLIV NACIONALNE KULTURE NA ODVIJANJE POGAJANJ

    OpenAIRE

    Borko, Vanja

    2014-01-01

    Vse več podjetij posluje na mednarodnih trgih, kjer se srečujejo s tujimi kulturami. Vzpostavitev poslovnega odnosa v tuji državi zahteva prilagojeno komunikacijo. Pogajanje je vrsta poslovne komunikacije, s katero želimo doseči dogovor. V diplomskem projektu smo ponazorili vpliv kulturnih razlik na odvijanje pogajanj. Projekt je razdeljen na pet poglavij. V uvodu predstavljamo glavni problem pogajanj, ki je nezadostna priprava na pogajanje in nerazumevanje medkulturnih razlik. Naslednje pogl...

  1. Ishara na uashiriaji kama nyenzo ya mtindo, maana na kiwakilishi cha itikadi katika riwaya ya Nyuso za Mwanamke

    OpenAIRE

    Wanyonyi, Mukhata Chrispinus

    2016-01-01

    Makala haya yanachanganua ishara na uashiriaji kama mbinu ya kimtindo ya kuwasilisha maana na kukuza uhusika na maudhui katika riwaya ya Nyuso za Mwanamke (2010) ya Said Ahmed Mohamed. Nimechanganua aina tatu za ishara ambazo ni ishara bia, ishara za kaida na ishara za kifasihi kama zinavyoainishwa na Frye na wenzake (1985). Lengo kuu ni kuchanganua na kubainisha jinsi ishara zinavyowasilisha maana na itikadi za jamii katika matini husika. Ishara hizi pia husaidia kukuza maudhui, ploti na kuo...

  2. NA50 quark-gluon plasma experiment

    CERN Multimedia

    1997-01-01

    View of the NA50 detector, which studies quark-gluon plasma. The picture shows one of the six hodoscopes, made of 48 scintillator counters, used in the muon trigger of the NA50 spectrometer. The picture shows one of the six hodoscopes, made of 48 scintillator counters, used in the muon trigger of the NA50 spectrometer

  3. Corpo e velhice na contemporaneidade

    Directory of Open Access Journals (Sweden)

    Gabriela Felten da Maia

    2014-04-01

    Full Text Available A inegável atenção dada ao corpo na sociedade inspirou a construção deste trabalho, visto que os imperativos atuais são a beleza, a forma e o vigor. A velhice e a inexorabilidade da morte apresentam-se para este ideal como incômodos que devem ser afastados através de diversos hábitos "saudáveis" e “rejuvenescedores”, como a ginástica, os cosméticos, as vitaminas, procedimentos estético-cirúrgicos, entre outros. O modo de “ser velho”, então, passa a ser configurado não mais por estereótipos negativos, mas a partir de um ethos em que os idosos são apresentados como saudáveis, joviais, engajados, produtivos e autoconfiantes. São corpos que ultrapassam as marcas do tempo, atléticos, firmes e lisos. Logo, aqueles que não aderem a este ethos podem tornar-se desviantes, estranhos, velhos, ultrapassados e precisam, portanto, serem descartados ou escamoteados. Tendo em vista estas questões, o presente trabalho propõe-se a discutir sobre o tema velhice, corpo e sociedade, na tentativa de problematizar sobre os atuais modos de subjetivação e o envelhecimento na contemporaneidade.

  4. Solid state diffusion of NaCl into NaY zeolite studied by positron annihilation

    International Nuclear Information System (INIS)

    A series of samples, prepared from mechanical mixtures of NaCl with NaY zeolite and resulting in the dispersion of NaCl in NaY, was studied by position annihilation spectroscopy. We measured the positron lifetime spectroscopy as a function of the weight ratio of the NaCl-NaY zeolite heated at 500 degree C for 1 h, as a function of the heating temperature held for 1 h, and as a function of the heating duration at 500 degree C for NaCl/NaY (15%). All the lifetime spectra were resolved into five components, in which the third, fourth and fifth components are related to the positron annihilation in β cage, supercage and interface void respectively. The experimental results showed that position annihilation spectroscopy is sensitive to the change of the dispersion of NaCl in NaY zeolite

  5. NA

    OpenAIRE

    Braga, Ataide R.

    1998-01-01

    The purpose of this research is to investigate when a Just-In-Time (JIT) inventory management technique is a worthwhile approach to managing inventories. Some experts in the field maintain that the additional transportation costs derived from using JIT and its costs due to frequent shipping is more than offset by the reduction in inventory levels. In this study a simulation is developed using the cost structure of Naval Air Station Lemoore for managing a selected group of items. Lemoore is co...

  6. NA

    OpenAIRE

    Dunn, Joseph F.

    1998-01-01

    The primary purpose of this thesis is to examine the legal ramifications of conducting Government Agency contracting on the Internet. The author proposes that the Internet is a suitable medium on which to process and conduct all aspects of Government contracting. The thesis examines the current legal issues surrounding contract formation across the open architecture of the Internet. The thesis then examines the latest cryptological schemes for both encryption and decryption and the logistical...

  7. NA

    OpenAIRE

    Dobel, Tracy A.

    1998-01-01

    This thesis examines progress toward gender integration at the Navy Recruit Training Command (RTC) in Great Lakes, Illinois. The study is largely descriptive, and attempts to determine if gender discrimination or gender bias occurs in the Navy's recruit training classes. The study adopted a definition of gender discrimination and gender bias by the American Association of University Women in a 1992 evaluation of gender equity in the educational setting. Focus group interviews were conducted w...

  8. ISKANJE IN IZBOR KADROV NA KLINIKI GOLNIK

    OpenAIRE

    Kopač, Mateja

    2014-01-01

    V diplomski nalogi smo predstavili Kliniko Golnik ter raziskovali in ugotavljali, na kakšen način pridobivajo in izbirajo ustrezne kadre. Diplomsko nalogo smo razdelili na dva dela, in sicer na teoretični in empirični oz. raziskovalni del. V prvem, teoretičnem delu smo opisali kadrovanje, načrtovanje kadrov, pridobivanje kadrov in njihovo selekcijo. Pri pridobivanju kadrov smo opisali analizo dela, postopek pridobivanja kadrov ter predstavili in opisali interno ter eksterno pridobivanje kadro...

  9. Hydrogen adsorption on Na-SWCNT systems

    OpenAIRE

    Nagare, Balasaheb. J.; Habale, Darshan; Chacko, Sajeev; Ghosh, Swapan

    2012-01-01

    We investigate the hydrogen adsorption capacity of Na-coated carbon nanotubes (Na-SWCNTs) using first-principles electronic structure calculations at absolute temperature and pressure. A single Na atom is always found to occupy the hollow site of a hexagonal carbon ring in all the six different SWCNTs considered, with a nearly uniform Na-C bond length of 2.5 A. Semiconducting zigzag nanotubes, (8,0) and (5,0), show stronger binding energies for the Na atom (-2.1 eV and -2.6 eV respectively), ...

  10. Complete mitochondrial genome of Salminus brasiliensis (Characiformes, Characidae).

    Science.gov (United States)

    Brandão-Dias, Pedro Ferreira Pinto; Carmo, Anderson Oliveira do; Martins, Ana Paula Vimieiro; Pimenta, Ricardo José Gonzaga; Alves, Carlos Bernardo Mascarenhas; Kalapothakis, Evanguedes

    2016-05-01

    We report the complete mitochondrial genome of the fish Salminus brasiliensis, popularly known as dourado. It is a circular, 17,721 bp long DNA molecule, containing 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes and a non-coding Control Region of 2128 bp, a relatively large molecule when compared to other closely related fishes. All protein-coding genes are on the heavy strand, except for Nd6, and all have ATG as the start codon, except for Cox1 gene which has a GTG start codon. Seven protein-coding genes have incomplete stop codons (Nd2, Cox2, Atp6, Nd4, and Cytb have T- -, and Cox3 and Nd3 have TA-). TAG is the stop codon for Nd6 and AGG is the stop codon for Cox1. PMID:25208163

  11. OGLED FIZIKALNIH EKSPERIMENTOV NA DALJAVO

    OpenAIRE

    Hladen, Sašo

    2012-01-01

    Fizikalni eksperiment je najosnovnejše in najpomembnejše orodje za motivacijo, razlago snovi, utrjevanje in dokazovanje fizikalnih pojavov in zakonov. V drugem poglavju smo govorili o uporabi računalnika v izobraževanju in fiziki. Govorimo o zgodovinskem vključevanju računalnika v izobraževanje, o značilnostih fizikalnih eksperimentov in uporabi računalnika pri pouku fizike. Govorimo še o tipu aplikacij, ki omogočajo spremljanje in izvajanje fizikalnih eksperimentov na daljavo, ter spoznam...

  12. RAZVOJ PRODUKTOV NA OSNOVI ANTIOCIANINOV

    OpenAIRE

    Vatai, Tünde

    2009-01-01

    Antocianini so skupina polifenolov, ki so odgovorni za barvno raznolikost cvetov in sadežev, od rumene, oranžne, rdeče, roza, do modre. V primerjavi s sintetičnimi barvili so nestabilni, kar predstavlja glavni problem pri njihovi uporabi in se lahko pokaže kot sprememba barve med procesiranjem in skladiščenjem. Glavni cilj doktorske disertacije je bil razviti produkt, naravno barvilo na osnovi antocianinov, ki bo ustrezno stabilen in bo predstavljal alternativo sintetičnim barvilom za uporabo...

  13. Micotoxinas e Micotoxicoses na Avicultura

    OpenAIRE

    Santurio JM

    2000-01-01

    Esta revisão tem como objetivo principal mostrar, baseado em dezenas de pesquisas realizadas, os efeitos tóxicos das micotoxinas aflatoxinas, tricotecenos, zealenona e fumonisinas sobre o desempenho das aves. O descobrimento das propriedades hepatotóxicas e hepatocarcinogênicas de algumas linhagens de Aspergillus flavus e A. parasiticus em perus, na Inglaterra, no início da década de 1960, seguida pela elucidação da estrutura de seus metabólitos tóxicos, as aflatoxinas, deu novo enfoque e pri...

  14. Design pistole na laser game

    OpenAIRE

    Krakovský, Jakub

    2014-01-01

    Předmětem této bakalářské práce je design pistole na laser game. Cílem je vytvořit funkční návrh futuristické zbraně respektující technické, ergonomické a estetické požadavky. The main subject of this bachelor thesis is to design the laser game gun. The goal of the design is to create a functional concept of futuristic gun respecting technical, ergonomic and aesthetic requirements. D

  15. The NA62 run control

    International Nuclear Information System (INIS)

    The NA62 experiment at CERN SPS will soon start taking data to measure the ultra-rare decay K+ → π+v v-bar . The requirement to reach a rejection factor of 1012 can be obtained with a large number of VETO and particle identification detectors as well as momentum measurement spectrometers. All components are included in the Trigger and/or Data Acquisition system. The RunControl has been designed to centrally link them to achieve their control and monitoring while still allowing non-experts shifters to run the experiment easily

  16. VPLIV VODENJA NA RAZVOJ ORGANIZACIJE

    OpenAIRE

    Rauš, Ivo

    2010-01-01

    Ključno vlogo pri razvoju človeških potencialov in sproščanju posameznikovih notranjih zmožnosti imajo njihovi neposredni vodje. Le ti naj bi skrbeli za ustvarjanje takega delovnega okolja, ki bo spodbujalo ustvarjalne dosežke, inovativnost, izvirnost idej, pripadnost in timsko sodelovanje. Vodenje zavzema prvo mesto na lestvici ključnih managerskih izzivov sedanjosti in srednjeročne prihodnosti, o čemer govorijo tudi številne zadnje raziskave ameriških in evropskih strokovnjakov za razvoj...

  17. Respostas fisiológicas de estresse no matrinxã (Brycon amazonicus após exercício físico intenso durante a captura Physiological stress responses of matrinxã (Brycon amazonicus after chasing

    Directory of Open Access Journals (Sweden)

    Márcio Aquio Hoshiba

    2009-01-01

    Full Text Available Para determinar as respostas de estresse do matrinxã após perseguição com puçá, juvenis (26,7±6,7 g foram aclimatados em caixas plásticas e submetidos aos tratamentos: Controle (sem perseguição, Perseguição por 2 minutos, Perseguição por 5 minutos, Perseguição por 10 minutos (quatro repetições, N=8/tratamento. Amostras de sangue foram coletadas 15, 30 e 60 minutos após a perseguição para determinação do cortisol, glicose, sódio, cloreto, potássio, hematócrito, hemoglobina, número total de eritrócitos e osmolaridade. O perfil das respostas após o exercício físico dos peixes não mostrou as alterações típicas do estresse. Até 60 minutos após o estímulo, não ocorreram alterações nos níveis sanguíneos de cortisol, glicose e potássio nos peixes dos diferentes tratamentos. Os n��veis de cloreto foram reduzidos 15 minutos após a natação forçada, enquanto os níveis do sódio mais baixos foram registrados 60 minutos depois. Houve redução da osmolaridade a partir dos 30 minutos após o estímulo, independente do tempo de perseguição. A natação forçada não interferiu nos indicadores hematológicos, corroborando os outros indicadores usados. Dessa forma, o exercício intenso dos peixes por até 10 minutos não foi estímulo suficiente para gerar respostas de estresse, sugerindo que o matrinxã é bastante resistente ao manejo de criação.This study reports the stress responses of matrinxã after chasing. Juvenile fish (26.7±6.7 g were adapted to 100L plastic boxes and submitted to the treatments: Control (no chasing, Chasing for 2 min, Chasing for 5 min, Chasing for 10 min (four boxes/treatment, 32 fish. Blood was drawn 15, 30 and 60 min after chasing to determine levels of cortisol, glucose, sodium, chloride, potassium, calcium, hematocrit, hemoglobin, erythrocytes number and osmolality. Matrinxã responses after forced swimming did not show the typical stress responses. There were no changes in blood cortisol, glucose, potassium and calcium levels in fish from any treatment until 60 min after chasing. Blood chloride levels were lower 15 min after chasing while the lowest levels of sodium were registered 60 min after the forced swimming. Osmolality dropped 30min after chasing, regardless the period of chasing. The intense swimming did not affect hematological indicators confirming the other physiological indicators. The results suggest that the intense swimming provoked by chasing up to 10 min was not intense enough to promote stress responses in matrinxã indicating that the species is very resistant to the farming handling.

  18. Micotoxinas e Micotoxicoses na Avicultura

    Directory of Open Access Journals (Sweden)

    Santurio JM

    2000-01-01

    Full Text Available Esta revisão tem como objetivo principal mostrar, baseado em dezenas de pesquisas realizadas, os efeitos tóxicos das micotoxinas aflatoxinas, tricotecenos, zealenona e fumonisinas sobre o desempenho das aves. O descobrimento das propriedades hepatotóxicas e hepatocarcinogênicas de algumas linhagens de Aspergillus flavus e A. parasiticus em perus, na Inglaterra, no início da década de 1960, seguida pela elucidação da estrutura de seus metabólitos tóxicos, as aflatoxinas, deu novo enfoque e prioridade para a pesquisa sobre micotoxinas. Análises de aflatoxinas realizadas no Laboratório de Análises Micotoxicológicas (LAMIC da Universidade Fedaral de Santa Maria, entre os anos de 1986 e janeiro de 2000, em 15.600 amostras de alimentos destinados principalmente ao consumo animal, demonstram que no milho analisado, 41,9% das amostras estavam contaminadas por aflatoxinas. Em surtos de aflatoxicose no campo, uma das características mais marcantes é a má absorção que se manifesta como partículas de ração mal digeridas na excreta das aves. Também observa-se, em frangos e poedeiras que recebem AFL, extrema palidez das mucosas e pernas. Dietas deficientes em riboflavina ou colecalciferol (vit. D tornaram frangos sensíveis, nos índices de desenvolvimento corporal, a concentrações muito baixas de AFL. O efeito aflatoxina nos frangos é maior na fase inicial de crescimento, ou seja, quando as aves ingeriram aflatoxina nos primeiros 21 dias de vida, e quanto maior o nível de stress do lote, menor a quantidade de AFL para afetar negativamente seu desempenho, seja na produção de carne ou de ovos. As principais micotoxinas do grupo dos tricotecenos são: toxina T-2; deoxynivalenol (DON; diacetoxyscirpenol (DAS, todas produzidas através de diversas espécies de fungos do gênero Fusarium. Além dos tricotecenos, o fusarium também pode produzir zearalenona e fumonisinas. Dessas fusarium-toxinas, somente toxina T-2 gera patologias s

  19. Low-spin states of 23Na

    International Nuclear Information System (INIS)

    A study of 23Na via the 22Ne(p,γ)23Na and 23Na(γ,γ)23Na reactions is presented. Only a limited number of resonances has been studied, selected on the basis of strong excitation of the lowest levels of which the spin was unknown. As a result the spins are now known of all levels of 23Na with excitation energies up to 7 MeV, except for a few high-spin states which are too weakly excited in the decay of the known 22Ne(p,γ) resonances. The mean lifetimes of the 23Na levels at 4.43 and 7.89 MeV were found to be 350±70 and 220±17 attoseconds (1 attosecond = 10-18 seconds) respectively. 97 refs.; 22 figs.; 12 tabs

  20. Utjecaj uvjeta tiskanja na strukturu FDM prototipova

    OpenAIRE

    Gajdoš, Ivan; Slota, Ján

    2013-01-01

    Osnovni nedostatak prototipova nastalih 3D tiskanjem metodom taloženja (FDM) je nehomogenost strukture koja proizlazi iz osnovnog principa te tehnike. Cilj je ovoga rada pokazati kako promjena radne temperature i rasporeda na osnovnoj ploči utječe na strukturu FDM prototipova. Kako bi se odredio utjecaj obradne temperature na strukturu nastajanja FDM prototipova, primijenjene su različite temperature glave i omotača kod tiskanja uzoraka. Uzorci su analizirani kompjuterskom tomografijom da bi ...

  1. Vpliv vetrnih elektrarn na stabilnost elektroenergetskega sistema

    OpenAIRE

    GYOEFI, TOMI

    2014-01-01

    V diplomskem delu so, na podlagi literature, analizirane dinamične lastnosti različnih tipov vetrnih elektrarn v elektroenergetskem sistemu. Namen dela je ponuditi pregled generacije vetrne energije, pri katerem je poudarek na vplivu vetrnih elektrarn na stabilnost elektroenergetskega sistema. Podani so osnovni mehanizmi delovanja asinhronskega generatorja, dvojno napajanega asinhronskega generatorja in sinhronskega generatorja s pretvornikom, njihovo tranzientno obratovanje in zmožnost...

  2. Energetska prenova na primeru javne stavbe

    OpenAIRE

    Mrhar, Urša

    2015-01-01

    V diplomskem delu je prikazana teoretična študija energetske prenove javne stavbe in vpliv nabora različnih ukrepov prenove na zmanjšanje količine potrebne energije za obratovanje stavbe. V delu je analizirana občinska stavba, na Gorenjski cesti 3, v Ribnici na Dolenjskem. Stavba je vpisana v Register kulturne dediščine, zato so v rešitvi energetske sanacije upoštevani tudi kulturnovarstveni pogoji. Analiza konstrukcijskih sklopov je bila narejena s programom TEDI. Prikazana je...

  3. Fabrication of Implanted $^{22}$Na Targets

    CERN Multimedia

    2002-01-01

    A knowledge of the $^{22}$Na(p,$\\gamma$)$^{23}$ Mg reaction rate is of significant astrophysical interest. In order to complete previous studies of this reaction, radioactive $^{22}$Na targets of high purity are required. We ask for support to fabricate these targets via the implantation technique at ISOLDE GPS (off—line mode) using $^{22}$Na nuclides in an Al matrix produced in Nov. 1990 at the PSI (Zürich). The $^{22}$Na nuclides are released and ionized in a surface ionisation source, mass-analyzed at ISOLDE GPS, and implanted in a Ni-Ta backing and a C—foil in a special implantation setup.

  4. KARTICE ZVESTOBE V TRGOVINI NA DROBNO

    OpenAIRE

    Ferk, Aljaž

    2011-01-01

    Skozi diplomski seminar smo spoznali programe zvestobe odjemalcev, kateri nam pomagajo obdržati naše sedanje kupce tudi v prihodnosti. Programe zvestobe priporočamo vsem podjetjem ne glede na stroko, v kateri delujejo. Zadovoljen kupec se bo še vedno vračal nazaj k nam ter ostal zvest, dokler bomo zadovoljevali njegova pričakovanje glede naših izdelkov oz. storitev, njegova zvestoba pa nam bo prinašala dobiček. Primer programa zvestobe smo predstavili na podjetju Tuš Holding d.o.o., kater...

  5. SREDNJOVJEKOVNE GEMINAE NA OTOKU U SOLINU

    OpenAIRE

    Bužančić, Radoslav

    1998-01-01

    Na temelju dokumentacije iz Arhiva Dyggve i morfoloških elemenata na nedavno pronađenom Zečevićevu akvarelu stare župne crkve u Solinu, autor valorizira otkriće don Lovre Katića ranosrednjovjekovnih dvojnih crkava na Gospinu Otoku podignutih koncem 10. stoljeća po uzoru na zapadnoeuropske dvorove. U tekstu je ujedno korigirana i revalorizirana Karaman-Dyggveova teza i grafička rekonstrukcija crkava sv. Stjepana i sv. Marije.

  6. Analiza vsebine konservatorskih načrtov

    OpenAIRE

    Štukelj, Katja

    2016-01-01

    UVOD: Ohranjanje kulturne dediščine se začne s konservatorskim načrtom. Gre za dokument, v katerem so jasno napisane smernice in priporočila, kako in zakaj ohraniti spomenik. Prav tako so v njem ovrednoteni njegov pomen ter ranljivost in ogroženost. Za vse to je potreben enoten postopek vsebinske izdelave konservatorskih načrtov. Od leta 2009 to ureja Pravilnik o konservatorskem načrtu. NAMEN: Namen te raziskave je primerjati vsebino izbranih primerov konservatorskih načrtov, izdelanih v Slov...

  7. Pomorstvo i ribarstvo na otoku Rabu

    OpenAIRE

    Šćerbe Haupt, Božidarka

    2015-01-01

    Pomorstvo i ribarstvo na otoku Rabu, proizvod je autoričina sakupljanja jezične građe na otoku Rabu. Obrađena su mjesta: Banjol, Barbat, Kampor, Lopar i grad Rab. Autorica je sakupila građu 1988. godine na osnovu razgovora sa ispitanicima, starijim mještanima, uglavnom ribarima. Sve je snimljeno na audio kazetama. Građa je sakupljena prema Upitniku originala Bollettino dell'atlante linguistico mediterraneo iz 1959. godine, tiskan pri Institutu za kulturnu suradnju, Venecija/Rim. U uvodnom dij...

  8. Aloe vera bathing improved physical and humoral protection in breeding stock after induced spawning in matrinxã (Brycon amazonicus).

    Science.gov (United States)

    Zanuzzo, Fábio S; Zaiden, Sérgio F; Senhorini, José A; Marzocchi-Machado, Cleni M; Urbinati, Elisabeth C

    2015-07-01

    In this study, we show that induced spawning causes stress, an intense loss of epithelia and immunosuppression, decreasing physical and humoral protection in fish, effects that were prevented or improved in fish bathed with Aloe vera. A. vera has several medicinal properties, including wound healing and immunostimulatory effects, which we observed in this study. Fish bathed with A. vera had a higher number of epidermal goblet cells and, in general, an improved wound healing rate compared with the control after induced spawning. These effects might be related to (1) the stimulation of leukocyte activity, represented here by the increased leukocyte respiratory activity triggered by A. vera (leukocytes are recognized as playing an important role in wound repair); (2) the antimicrobial properties of A. vera, which decrease wound infection and accelerate the healing process; and (3) several mechanisms that explain the healing effect of A. vera (increased collagen synthesis, rate of epithelialization, and anti-inflammatory and moisturizing effects). Our results also suggest that caution is necessary during the induced spawning process, especially during stripping, and A. vera bathing is recommended after intensive aquaculture operations. PMID:25703714

  9. Azijski pogled na transplantaciju organa

    OpenAIRE

    Tai, Michael Cheng-tek

    2008-01-01

    Dramatično postignuće medicinske tehnologije transplantacije organa omogućilo je mnogim osobama oštećenih organa da nastave živjeti duljim životom. Prva uspješna transplantacija izvedena je u Bostonu 1954. godine, a pravi proboj transplantacije organa dogodio se tri desetljeća kasnije, nakon otkrića Ciklosporina A koji rješava probleme odbacivanja organa. Danas je moguće transplantirati većinu organa uključujući bubrege, srce, jetru, gušteraču, pluća, kožu i niz tkiva poput koštane srži i rož...

  10. Dependence of intracellular Na+ concentration on apical and basolateral membrane Na+ influx in frog skin

    International Nuclear Information System (INIS)

    An isotopic method was developed to measure the intracellular Na+ content of the transepithelial Na+ transport pool of frog skin. Isolated epithelia (no corium) were labeled with 24Na either asymmetrically, from apical (Aa) or basolateral (Ab) solutions, or symmetrically (Aab). Transport pool Na+ could be identified from the kinetics of washout of 24Na carried out in the presence of 1 mM ouabain, 100 microM amiloride, and 1 mM furosemide that served to trap cold Na+ and 24Na within the transport pool. In control epithelia, Aab averaged 64.1 neq/cm2 (13.9 mM), and maximal inhibition of apical membrane Na+ entry with 100 microM amiloride caused Aab to decrease to 24.3 neq/cm2 (5.3 mM). Ouabain caused Aab to increase markedly to 303 neq/cm2 in 30 min, whereas amiloride inhibition of apical membrane Na+ entry reduced markedly the rate of increase of Aab caused by ouabain. These data, in part, confirmed the existence of an important basolateral membrane permeability to Na+ that was measured in separate studies of the bidirectional 24Na fluxes at the basolateral membranes of the cells. Both sets of data were supportive of the idea that a significant Na+ recycling exists at the basolateral membranes of the cells that contributes to the Na+ load on the pump and Na+ recycling participates in the regulation of the Na+ concentration of the Na+ transport pool of these epithelial cells

  11. Analiza lovskogojitvenega načrtovanja na primeru gorenjskega lovsko upravljavskega območja

    OpenAIRE

    Avsenek, Jernej

    2014-01-01

    V delu smo analizirali upravljanje s populacijami divjadi v Gorenjskem lovsko upravljavskem območju. Predstavili smo zakonsko ureditev tega področja v preteklosti in danes. Načrtovanje upravljanja z divjadjo je bilo v preteklostiv pristojnosti lovskih organizacij, danes pa upravljavske načrte izdeluje Zavod za gozdove Slovenije. Lovsko upravljavsko načrtovanje danes temelji na kontrolni metodi, pri tem pa uporablja kazalnike stanja populacij divjadi in njenega okolja. Za stanje populacij divj...

  12. Relationship between intracellular Na+ concentration and reduced Na+ affinity in Na+,K+-ATPase mutants causing neurological disease

    DEFF Research Database (Denmark)

    Toustrup-Jensen, Mads Schak; Einholm, Anja P.; Schack, Vivien;

    2014-01-01

    mutations as well as an extension of the C terminus only by a single alanine. The dependence of the mutational effects on the specific α isoform in which the mutation is introduced was furthermore studied. At the cellular level we have characterized the C-terminal extension mutants and other mutants......, addressing the question to what extent they cause a change of the intracellular Na+ and K+ concentrations ([Na+]i and [K+]i) in COS cells. C-terminal extension mutants generally showed dramatically reduced Na+ affinity without disturbance of K+ binding, as did other RDP mutants. No phosphorylation from ATP...... was observed for the +28 mutation of α2 despite a high expression level. A significant rise of [Na+]i and reduction of [K+]i was detected in cells expressing mutants with reduced Na+ affinity and did not require a concomitant reduction of the maximal catalytic turnover rate or expression level. Moreover, two...

  13. Electron-Stimulated Emission of Na Atoms from NaCl Nanocube Corners

    OpenAIRE

    Ceresoli, D.; Zykova-Timan, T.; Tosatti, E.

    2006-01-01

    We performed first principles density functional calculations and simulations of magic-size neutral NaCl nanocubes, and computed the the extraction of a Na neutral corner atom after donating an electron. The atomic structure of the resulting Na corner vacancy is presented.

  14. Na(3)DyCl(6).

    Science.gov (United States)

    Schurz, Christian M; Meyer, Gerd; Schleid, Thomas

    2011-05-01

    Single crystals of the title compound, tris-odium hexa-chloridodysprosate, Na(3)DyCl(6), were obtained as a by-product of synthesis using dysprosium(III) chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4)°] is isotypic with the mineral cryolite (Na(3)AlF(6)) and the high-temperature structure of the Na(3)MCl(6) series, with M = Eu-Lu, Y and Sc. The isolated, almost perfect [DyCl(6)](3-) octa-hedra are inter-connected via two crystallographically different Na(+) cations: while one Na(+) resides on centres of symmetry (as well as Dy(3+)) and also builds almost perfect, isolated [NaCl(6)](5-) octa-hedra, the other Na(+) is surrounded by seven chloride anions forming a distorted [NaCl(7)](6-) trigonal prism with just one cap as close secondary contact. PMID:21754259

  15. Na3DyCl6

    Science.gov (United States)

    Schurz, Christian M.; Meyer, Gerd; Schleid, Thomas

    2011-01-01

    Single crystals of the title compound, tris­odium hexa­chloridodysprosate, Na3DyCl6, were obtained as a by-product of synthesis using dysprosium(III) chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4)°] is isotypic with the mineral cryolite (Na3AlF6) and the high-temperature structure of the Na3 MCl6 series, with M = Eu–Lu, Y and Sc. The isolated, almost perfect [DyCl6]3− octa­hedra are inter­connected via two crystallographically different Na+ cations: while one Na+ resides on centres of symmetry (as well as Dy3+) and also builds almost perfect, isolated [NaCl6]5− octa­hedra, the other Na+ is surrounded by seven chloride anions forming a distorted [NaCl7]6− trigonal prism with just one cap as close secondary contact. PMID:21754259

  16. SIMBOLNI ELEMENTI NA PODEŽELJU

    OpenAIRE

    Dravec, Barbara

    2014-01-01

    Namen diplomskega dela je prepoznati simbolne elemente in njihov pomen v izbranih naseljih v Prekmurju. Pri izdelavi diplomske naloge smo uporabili različne metode: od kabinetnih metod analize obstoječih pisnih virov do kartiranja simbolnih elementov na terenu. Ugotovili smo, da so simbolni elementi pomemben dejavnik, ki vpliva na morfološko strukturo naselij

  17. Study of the Na-C-O and Na-H-O ternary systems in the sodium rich corner

    International Nuclear Information System (INIS)

    The purpose of this study is to provide a contribution to the understanding of the sodium - carbon - oxygen and sodium - hydrogen - oxygen ternary systems in the sodium rich corner. In order to do this the Na-NaH-Na2O-NaOH phase diagram was completed and the Na-Na2O-Na2CO3-C phase diagram was outlined. This work is made up of two parts. The first is devoted to a critical literature survey essential to establish correct phase diagrams. The second is an experimental study followed by a discussion collating our finding to the literary data. The basic experimental technique used is differential thermal analysis (DTA) but it has been completed by quenching, X-ray and chemical analysis methods. The proposed phase diagrams imply that Na-NaH-Na2O-NaOH and Na-Na2O-Na2CO3-C systems are reciprocal ternary systems. Temperatures of stable pairs reversal are respectively 410 and 6900C. The stable pairs are Na-NaOH and Na-Na2CO3 at elevated temperature, Na2O-NaH and Na2O-C at low temperature

  18. Anodic Synthesis and Characterization of Na-Pb-O, Na-Pb-Bi-O Crystals

    Institute of Scientific and Technical Information of China (English)

    Li Mei QIU; Fen LIU; Liang Zhong ZHAO

    2005-01-01

    Crystals of Na-Pb-O and Na-Pb-Bi-O were electrosynthesized on the anode from molten salts. The resulting crystals have a hexagonal structure, in which the base ions (Pb and Bi) are in high oxidation states. By using KOH/NaOH (atomic ratio K:Na=1:1) mixture as a flux,incorporation of K ions into the lattice is inhibited while incorporation of Bi ions is enhanced. The magnetic measurement shows that the Na-Pb-Bi-O crystals are dominated by diamagnetism.

  19. Catalysis of Na+ permeation in the bacterial sodium channel NaVAb

    OpenAIRE

    Chakrabarti, Nilmadhab; Ing, Christopher; Payandeh, Jian; Zheng, Ning; Catterall, William A.; Pomès, Régis

    2013-01-01

    Determination of a high-resolution 3D structure of voltage-gated sodium channel NaVAb opens the way to elucidating the mechanism of ion conductance and selectivity. To examine permeation of Na+ through the selectivity filter of the channel, we performed large-scale molecular dynamics simulations of NaVAb in an explicit, hydrated lipid bilayer at 0 mV in 150 mM NaCl, for a total simulation time of 21.6 μs. Although the cytoplasmic end of the pore is closed, reversible influx and efflux of Na+ ...

  20. Instrumenti na stanici za praćenje disanja Zemljine kore na RGN fakultetu Zagreb

    OpenAIRE

    Marjanović Kavanagh, Radovan

    2013-01-01

    Na RGN fakultetu u Zagrebu prvi je put u našoj zemlji uspješno puštena u pogon stanica za praćenje disanja Zemljine kore. U pogon stanice uključeni su različiti mjerni instrumenti: Permanentna Trimble GNSS-stanica, vertikalni ekstenzometar, dvokomponentni tiltmetar, jednokomponentni tiltmetar i stacionarni gravimetar LaCoste & Romberg ET 16. GNSS-antena postavljena je na stup na terasi iznad rudarskog okna i antenskim kabelom spojena na prijamnik koji je uz pomoć LAN-mreže povezan s centralni...

  1. OGLAŠEVANJE NA DRUŽBENIH OMREŽJIH NA PRIMERU FACEBOOKA

    OpenAIRE

    Novak, Martina

    2012-01-01

    V diplomskem delu obravnavamo družbene medije kot novo priložnost za promocijo in oglaševanje podjetij. Spoznali smo družbena omrežja na splošno in nekaj teh, ki jih uporabljamo tudi v Sloveniji na kratko predstavili. Podrobneje smo se osredotočili na družbeno omrežje Facebook, predvsem na samo spletno stran, njen izgled in storitve, ki jih ponuja uporabnikom. V nalogi je podrobneje opisan Facebook kot orodje za uporabo oglaševanja. Spoznali smo brezplačne in plačljive načine promocije in ogl...

  2. Interaction in the FeVO4-NaOH-NaCl-H2O system

    International Nuclear Information System (INIS)

    The solubility in the FeVO4-NaOH-NaCl-H2O system is studied using the saturation method at 22+-0.5 deg C and constant ionic force μ=1.0. The existence of the basic mixed sodium and iron (3) ortho- vanadates of the composition: Na4Fe9(OH)4(VO4)9xnH2O, NaFeOHVO4xnH2O, Na2Fe(OH)2VO4xnH2O is established. Conditions of their preparation and the results of IR spectroscopic study of the salts are presented

  3. Bullying na Escola: um sofrimento

    Directory of Open Access Journals (Sweden)

    Marlene Silva Sardinha Gurpilhares

    2014-07-01

    Full Text Available O bullying é uma forma de violência presente nas escolas e o termo é utilizado para caracterizar todas as formas de agressões repetitivas psicológicas e físicas, direta ou indiretamente. Esta violência causa sofrimentos, intimidação e medo, sempre numa relação de poder entre pares. Esta pesquisa trata de um estudo do bullying escolar: o que é, como surgiu, como identificá-lo e sua caracterização, conseqüências, causas, o papel da escola, de professores e pais e uma proposta prática que pode ser adotada para sua prevenção e contenção. O objetivo é organizar materiais para leitura dos atores educacionais para uma possível reflexão, através de pesquisas bibliográficas. Esta violência é grave e deveria ser tratada como saúde pública, devido às conseqüências que traz, como queda na aprendizagem, na autoestima e em casos mais graves, até o suicido e outras tragédias. A escola necessita atentar para esse tipo de violência, revendo suas ações em todos os momentos, tendo um olhar integral e diferenciado em relação aos alunos. É fundamental que o bullying não seja tratado como brincadeira de criança e para ser identificado e combatido é necessária uma ação entre a família e todos da escola, que pode ser desenvolvida através de projetos que ajudem a apontar caminhos para a solução do problema. Tais ações devem ser pautadas por constantes debates e reflexões, nas quais o aluno se torne o protagonista. Não existem fórmulas prontas, pois a intervenção deve ser feita através da realidade de cada escola.

  4. Capsazepine, a synthetic vanilloid that converts the Na,K-ATPase to Na-ATPase

    DEFF Research Database (Denmark)

    Mahmmoud, Yasser Ahmed

    2008-01-01

    . Drawing on previous homology modeling studies of Na,K-ATPase to atomic models of sarcoplasmic reticulum Ca-ATPase and on kinetic data, we propose that CPZ uncouples an Na+ cycle from an Na+/K+ cycle in the pump. The Na+ cycle possibly involves transport through the recently characterized Na+-specific site...... regulatory communication with nucleotides takes place during turnover. Studies with lipid vesicles revealed that CPZ reduced ATP-dependent digitoxigenin-sensitive 22Na+ influx into K+ loaded vesicles only at saturating ATP concentrations. The drug apparently abolishes the regulatory effect of ATP on the pump....... A shift to such uncoupled mode is believed to produce pumps mediating uncoupled Na+ efflux by modifying the transport stoichiometry of single pump units. Udgivelsesdato: February 5...

  5. Terapia de linguagem na afasia

    Directory of Open Access Journals (Sweden)

    Mauro Spinelli

    1977-12-01

    Full Text Available A terapia da linguagem na afasia foi estudada em 15 pacientes, 8 do sexo masculino e 7 do sexo feminino; a idade variou de menos de 10 anos a mais de 50 anos; em 11 casos a afasia era sequela de acidente vascular cerebral e, em 4, de traumatismo crânio-encefálico. Quanto ao tipo de afasia, 5 pacientes apresentavam déficits predominantemente de expressão e 10 apresentavam déficits receptivos e expressivos em graus equiparáveis. Em 6 casos a terapia foi iniciada dentro dos 3 primeiros meses de instalação do quadro; nos restantes foi iniciada mais tardiamente. Dos 15 pacientes, 11 apresentaram evolução satisfatória, a qual não depndeu do grau de afasia, do tipo de afasia, da idade do paciente, do tipo de patologia e do intervalo entre a instalação do quadro afásico e o início da terapia. A terapia da linguagem no paciente afásico é efetiva, o prognóstico não pode ser feito a priori. Somente a evolução do caso com sua retestagem criteriosa poderá dar dados realmente úteis para se falar em evolução.

  6. NA48: rare decay results

    International Nuclear Information System (INIS)

    Recent results on the kaon rare decays: KS → γγ, KS,L → π+π-e+e- and KS → π0e+e- measured in NA48 experiment at CERN, are presented in this paper. These results are based on data taken in 1998 and 1999, during 2 days in 1999 data was recorded with a factor 200 higher beam intensity than the usual KS beam, resulting in 2.3 * 108 KS decays. Among other results the following branching ratios have been computed : BR(KS → γγ) = (2.58 ± 0.36 ± 0.22)*10-6, BR(KL → π+π-e+e-) = (3.1 ± 0.1 ± 0.2)*10-7, BR(KS → π+π-e+e-) = (4.3 ± 0.2 ± 0.3)*10-5 and BR(KS → π0e+e-) -7. (A.C.)

  7. Gasotransmitters: Novel regulators of epithelial Na+ transport?

    Directory of Open Access Journals (Sweden)

    MikeAlthaus

    2012-04-01

    Full Text Available The vectorial transport of Na+ across epithelia is crucial for the maintenance of Na+ and water homeostasis in organs such as the kidneys, lung or intestine. Dysregulated Na+ transport processes are associated with various human diseases such as hypertension, the salt-wasting syndrome pseudohypoaldosteronism type 1, pulmonary edema, cystic fibrosis or intestinal disorders, which indicate that a precise regulation of epithelial Na+ transport is essential. Novel regulatory signaling molecules are gasotransmitters. There are currently three known gasotransmitters: nitric oxide (NO, carbon monoxide (CO and hydrogen sulfide (H2S. These molecules are endogenously produced in mammalian cells by specific enzymes and have been shown to regulate various physiological processes. There is a growing body of evidence, which indicates that gasotransmitters may also regulate Na+ transport across epithelia. This review will summarize the available data concerning NO, CO and H2S dependent regulation of epithelial Na+ transport processes and will discuss whether or not these mediators can be considered as true physiological regulators of epithelial Na+ transport biology.

  8. NaK handling and removal

    International Nuclear Information System (INIS)

    Sodium-potassium alloy is used in specific application in French Fast Breeder Reactors as: cold traps, NaK bubbler for argon purification, valves and also in experimental irradiation devices. lt has been preferred to sodium because it is liquid from + 7 deg. C for the most common peritectic alloy. After its use, NaK is considered as a hazardous waste (nuclear or not) due to its high reactivity with air and water. The most important risk remains in handling NaK systems which have not been operated for some time. The NaK will be covered with a crust of the superoxide K02 which is a strong oxidising agent. Thermodynamically, K02 will react with most organic material or metallic dust or swarfs and can also react with additional NaK to give sufficient heat to boil part of the NaK, resulting in a sudden increase in pressure and small explosions. We describe the formation given to experimenters in our Sodium School and the CEA's experience in treating specific devices for transportation, decanting of tanks, tank opening and NaK removal. (author)

  9. Pristup bolesniku sa sumnjom na akutni pankreatitis

    OpenAIRE

    Mikolašević, Ivana; Krznarić Zrnić, Irena; Štimac, Davor

    2013-01-01

    Kliničke manifestacije akutnog pankreatitisa širokog su spektra i često predstavljaju diferencijalno dijagnostički problem. U pristupu bolesniku sa sumnjom na razvoj akutnog pankreatitisa nužna je iscrpna anamneza i detaljan fizikalni pregled, što nam uz najmanje trostruko povećanje aktivnosti amilaza i dvostruko povećanje aktivnosti lipaza s velikom vjerojatnošću upućuje na razvoj akutne upale gušterače. Nužno je potom procijeniti težinu akutnog pankreatitisa, kako bismo pravo...

  10. PLESNO USTVARJANJE NA PODLAGI LITERARNEGA BESEDILA

    OpenAIRE

    Krajnc, Jožica; Zaponšek, Mojca

    2009-01-01

    Diplomsko delo z naslovom Plesno ustvarjanje na podlagi literarnega besedila je zapisano v okviru plesnega ustvarjanja otrok ob slikanici Bravo, putka!. V teoretičnem delu je obravnavan ples v povezavi z njegovim izražanjem in vzgojo. Ob tem je posebej izpostavljena estetika v plesu, sodobni ples ter balet. Poudarek je tudi na improviziranju in oblikovanju ter na dihanju in ritmu. Ob tem sta izpostavljena glasba in književnost kot pomembna motivacijska dejavnika. Teoretični del je nadgrajen s...

  11. EKSPERIMENTALNA ANALIZA VIBRACIJ NA PRALNI GRUPI

    OpenAIRE

    Kozel, Rok

    2012-01-01

    Diplomsko delo se ukvarja z vibracijami pralnega stroja. Eksperimentalno analizo smo opravili na laboratorijskem preizkuševališču, kjer je pralna grupa obešena na namenskem ogrodju. Na pralni grupi sta nameščena pospeškomera ADXL345, ki sta s serijsko SPI komunikacijo povezana z NI PXI-7841R karto. NI PXI-7841R karta je v ohišju NI PXI 1003 in je povezana z računalnikom. Pralna grupa je opremljena tudi z BLAC motorjem, s katerim operira razvojna plošča NEXYS 2. Vse skupaj nadziramo preko raču...

  12. Na3DyCl6

    OpenAIRE

    Schurz, Christian M.; Meyer, Gerd; Schleid, Thomas

    2011-01-01

    Single crystals of the title compound, tris­odium hexa­chloridodysprosate, Na3DyCl6, were obtained as a by-product of synthesis using dysprosium(III) chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4)°] is isotypic with the mineral cryolite (Na3AlF6) and the high-temperature structure of the Na3 MCl6 series, with M = Eu–Lu, Y and Sc. The isolated, almost perfect [DyCl6]3− octa­hedra are inter­connected via two crystallographic...

  13. Na3DyCl6

    OpenAIRE

    Schurz, Christian M.; Gerd Meyer; Thomas Schleid

    2011-01-01

    Single crystals of the title compound, trisodium hexachloridodysprosate, Na3DyCl6, were obtained as a by-product of synthesis using dysprosium(III) chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4)°] is isotypic with the mineral cryolite (Na3AlF6) and the high-temperature structure of the Na3MCl6 series, with M = Eu–Lu, Y and Sc. The isolated, almost perfect [DyCl6]3− octahedra a...

  14. Cancioneiro tradicional Galego: Instrumentos pobres na Escola

    OpenAIRE

    Calvo López, Alberte

    2013-01-01

    [GL] O Cancioneiro tradicional Galego: Instrumentos pobres na Escola é un proxecto de intervención socio-educativa centrado na actual situación da música tradicional galega dentro da realidade escolar. Froito dunha profunda investigación documental e curricular a proposta de innovación concrétase na elaboración dun cancioneiro escolar asentado nas melodías e nos instrumentos (instrumentos pobres) propios do noso patrimonio cultural. A finalidade última do traballo é ofrecer aos...

  15. Pregled strategije adhezije na caklinu i dentin

    OpenAIRE

    Azinović, Zoran; Galić, Nada; Lazić, Biserka; Keros, Jadranka; Buković, Dino; Jorgić-Srdjak, Ksenija

    1998-01-01

    U uvodu se ističe važnost kemijskoga predtretmana tvrdih zubnih tkiva tijekom restorativnoga postupka. Adhezijski restorativni postupak modificira temeljna načela preparacije kaviteta i načela prevencije zubnoga karijesa.Adhezijski se postupak početkom pedesetih godina ograničio samo na kemijski tretman caklinskih rubova. Mnoga tadašnja istraživanja bavila su se koncentracijom kiselina i vremenom jetkanja, te ultramikroskopskim izgledom jetkane caklinske površine. Kemijska obrada dentina i ve...

  16. NAKUPNO VEDENJE PROIZVODNIH PODJETIJ NA MEDORGANIZACIJSKIH TRGIH

    OpenAIRE

    Koštomaj, Dragica

    2013-01-01

    Z naraščanjem konkurence so kupci postali zahtevnejši in bolj seznanjeni z izbiro na trgu, zato narašča pomen razumevanja ključnih dejavnikov, ki vplivajo na nakupno vedenje in razvoj tesnih odnosov med ponudniki in odjemalci. Medorganizacijsko nakupno vedenje proizvodnih podjetij na medorganizacijskih trgih je dinamično in zapleteno, pod vplivom različnih dejavnikov, poteka v več fazah, vključuje več posameznikov, ki imajo različne prioritete in cilje in se precej razlikuje od nakupnega vede...

  17. Uticaj industrijalizacije poljoprivrede na ugled zanimanja seljaka

    OpenAIRE

    Stevanović, Đuro

    1989-01-01

    Istraživanja o društvenom ugledu seljaka gotovo posvuda u svetu pokazuju slične rezultate: seljak je vrlo nisko rangiran, prvenstveno zbog niskog dohotka, bez obzira na razinu društvenog značenja same poljoprivrede. Osim toga, poljoprivreda je i zbog drugih razloga neprivlačna kao osnova egzistencije. Autorovo istraživanje ovoga problema ukazuje i na razlike među seljacima u ocenama svoga ugleda i položaja, materijalnih uslova radnika i službenika u privredi, ruk...

  18. VPLIV PARAMETROV NA KARAKTERISTIKE PROCESA VBRIZGAVANJA

    OpenAIRE

    Radeljić, Boštjan

    2011-01-01

    V nalogi je predstavljen mehansko krmiljen sistem za vbrizgavanje goriva s posebnim poudarkom na izboljšanju karakteristik vbrizgavanja. Analizirani so vplivi posameznih parametrov kot so dolžina in notranji premer visokotlačnih cevi tlačilke ter preddvig bata v linijski visokotlačni tlačilki na karakteristiko vbrizgavanja, tlak vbrizgavanja, trajanje in začetek vbrizgavanja. Analiza eksperimenta je pokazala, da imata na karakteristike procesa vbrizgavanja največji vpliv dolžina in no...

  19. Vulgarni latinitet na natpisima rimske provincije Dalmacije

    OpenAIRE

    Zović, Valentina

    2015-01-01

    Epigrafska građa jedan je od bitnih pokazatelja jezika rimskog puka i svjedočanstvo postupnog razvoja iz latinskog u romanske jezike. Naime, ona daje sliku jezika kojim se sam narod služio, koji se razlikovao od onoga na kojem su pisana književna djela i koji se danas smatra normativnim. Stoga se ovaj rad temelji na brojnoj natpisnoj građi raznolika karaktera (sepulkralna, votivna, počasna…) pronađenoj na prostoru rimske provincije Dalmacije. Iz pregledanih epigrafskih...

  20. Klimatske promjene i utjecaj na zdravlje

    OpenAIRE

    Zaninović, Ksenija; Gajić-Čapka, Marjana

    2008-01-01

    Povećana koncentracija stakleničkih plinova zbog ljudskih aktivnosti uzrokovala je globalno zatopljenje koje je u proteklom stoljeću bilo najveće u posljednjih 1000 godina. Zatopljenje je zabilježeno i u Hrvatskoj, gdje je temperatura na obali porasla više nego u unutrašnjosti, pri čemu je zatopljenju na obali najviše pridonio porast ljetnih, a u unutrašnjosti zimskih temperatura zraka. Klimatske promjene utječu na zdravlje ljudi, pri čemu se najviše ističe povećana smrtnost za toplinskih val...

  1. VPLIV EMBALAŽE NA PODOBO IZDELKA

    OpenAIRE

    Dominko, Peter

    2012-01-01

    Namen diplomskega seminarja je bil ugotoviti vpliv embalaže na podobo izdelka. Najprej smo bolj podrobno opredelili podobo in embalažo, v nadaljevanju pa smo na podlagi člankov in raziskav oba pojma povezali in ugotavljali pomen in vlogo embalaže na podobo izdelka. Prišli smo do ugotovitve, da je embalaža še posebej pomembna pri prvem nakupu izdelku, ko porabnik izdelka še ne pozna. Embalaža lahko namreč s svojim izgledom porabnika pritegne in povzroči, da porabnik izdelku nakloni pozorno...

  2. VPLIV SODOBNIH MEDIJEV NA GIBALNO AKTIVNOST OTROK

    OpenAIRE

    Hlastan, Alja

    2014-01-01

    Diplomsko delo je teoretično in se nanaša na teoretska spoznanja s področja športa , vzgoje in medijskih komunikacij. Sestavljeno je iz več poglavij, v katerih sta pojma šport in mediji natančno opredeljena in predstavljena skozi čas. Sodobni šport je namreč z leti postal kulturni in družbeni fenomen, predvsem pa produkt medijske publicitete. Poudarek je na njegovi integriteti s predšolsko vzgojo in vplivu medijev na udejstvovanje otrok v športu. Ti vplivi so lahko pozitivni in negativn...

  3. Vpliv CO 2 na izkoristke sinteze metanola

    OpenAIRE

    Štumpf, Aleš

    2011-01-01

    V diplomski nalogi smo naredili raziskavo procesa proizvodnje metanola z uvajanjem CO2 v proces. Raziskava je bila narejena za družbo Nafta Petrochem d. o. o. Proces proizvodnje smo simulirali s procesnim simulatorjem ASPEN PLUS. Na proizvodnjo metanola smo vplivali z zmanjševanjem vtoka zemeljskega plina ter z dodajanjem CO2 v proces. Določili smo tudi matematični model z linearno regresijo, vpliv zemeljskega plina na proizvodnjo metanola in vpliv dodatnega vtoka CO2 na dodatno proizvodnjo m...

  4. VPLIV VERSKE PRIPADNOSTI NA PORABO TOALETNEGA PAPIRJA

    OpenAIRE

    Nekrep, Sonja

    2010-01-01

    V času gospodarske krize in recesije podjetja, ki se niso pravočasno prestrukturirala, težko dosegajo načrtovane ključne cilje poslovanja, kar se odraža v izkazih poslovnega izida kot nižji čisti prihodki, poslovni izidi iz rednega poslovanja in čisti poslovni izidi pa so velikokrat negativni. Soočamo se z umiranjem neuspešnih tekmovalcev na trgu, na katerem še zmeraj vlada brezobziren boj. Hitro rastočih trgov je vse manj, gneča v panogah pa je zmeraj zelo velika, zato uspejo samo stabilni, ...

  5. Izlaganje na javni uvid podataka katastarske izmjere

    OpenAIRE

    Kunić, Nikica

    2011-01-01

    U radu je opisan postupak izlaganja na javni uvid podataka katastarske izmjere. Navedeni su pripremni radovi koje je potrebno obaviti prije izlaganja. Opisan je postupak priopćavanja katastarskih podataka te postupanje po prigovorima i žalbama na katastarske podatke. Nakon priopćavanja obavljaju se završni radovi, kontrole te se izrađuje katastarski operat. Katastarski operat katastra nekretnina stavlja se u primjenu danom otvaranja zemljišne knjige na temelju odluke ravnatelja Državne geodet...

  6. VARNOST ELEKTRONSKEGA PLAČEVANJA NA INTERNETU

    OpenAIRE

    Zidar, Miha

    2013-01-01

    Vsi uporabniki elektronskega poslovanja se srečujemo s problematiko varnosti te vrste poslovanja. Predvsem sem ciljamo na uporabnike srednjih let in starejše. Lastna raziskava je pokazala, da več kot tri četrtine anketirancev že uporablja elektronska plačilna sredstva, vendar moramo izpostaviti, da je bila povprečna starost anketirancev 27.2 let. Namen diplomskega seminarja je bil seznanitev z alternativami plačevanja na internetu ter analiziranje le-teh glede varnosti ter prijaznosti d...

  7. Cementiranje mosta na usadcima ili fiksacija vijcima?

    OpenAIRE

    Novaković, M.; Krmpotić, Marko

    2005-01-01

    Pitanje da li cementirati ili fiksirati most na usadcima s pomoću vijaka još uvijek je jedna od čestih dvojbi u implantologiji. U početcima implantologije fiksacija vijcima smatrala se je jedinim prikladnim rješenjem. Razvojem struke, u prvome redu biomehanike i komponentistike, cementiranje sve češće postaje metoda izbora. U prikazu su opisane obje mogućnosti, s naglaskom na osobitostima u kliničkoj primjeni. Fiksacija vijcima jednostavniji je, brži i jeftiniji način, a cementiranje je primj...

  8. ORGANIZACIJA FESTIVALA S POUDARKOM NA FINANCIRANJU

    OpenAIRE

    Puhar, Rene

    2010-01-01

    Na primeru Festivala DokMa je predstavljen procesni način vodenja in upravljanja organizacije s področja kulture. Identificirani so procesi, ki so za organizacijo festivala ključni. V delu so opazovane še organizacije nekaterih drugih vidnih festivalov: Festivala Lent, Festivala Animateka, Festivala Magdalena. V poglavju o financiranju so analizirani potencialni viri financiranja slovenskih festivalov, ob tem pa izpostavljeni nekateri načini za uspešno pridobivanje finančnih sredstev iz naslo...

  9. SPLETNI PORTAL O KAMPIRANJU NA VZHODNEM JADRANU

    OpenAIRE

    Hribar, Matej

    2015-01-01

    Spletni portali ponujajo veliko informacij o počitniških kapacitetah, zato se večina ljudi, ki si želijo letni dopust preživeti v enem izmed kampov, odloča na podlagi le-teh. Obstaja veliko portalov o kampiranju, vendar pa le ti zaradi svoje posplošenosti ne ponujajo zadostno število informacij, ki jih uporabnik potrebuje. Za temo o spletnem portalu o kampiranju smo se odločili, ker smo mnenja, da portali o kampiranju na vzhodnem Jadranu uporabnikom na enem mestu ne nudijo zadostnih inform...

  10. A Economia Informal na perspectiva do IRS

    OpenAIRE

    Sampaio, José Filipe Leite

    2013-01-01

    O presente trabalho tem como objetivos proceder a uma revisão da literatura sobre a economia informal, considerando a reflexão académica e teórica e a análise prática de documentos emanados por instituições e decisores políticos, delimitar o conceito de economia informal, salientando as dificuldades da sua exata quantificação, identificar as suas consequências na eficiência e na equidade e analisar a importância da economia informal em Portugal e na União Europeia. Este trabalho pretende aind...

  11. Competências de enfermagem na arritmologia

    OpenAIRE

    Barata, L.

    2012-01-01

    A utilização do conceito de competência aparece pela primeira vez referenciado na escrita de Florence Nightingale no livro Notes on Nursing, em que o termo é usado para referir as qualidades (características) que as estudantes deveriam possuir para serem enfermeiras no final do curso. Na legislação sobre a carreira, no Regulamento para o Exercício Profissional de Enfermagem (1996), o termo competência simboliza o domínio de actuação na prática profissional, associado a uma noção que evoca a e...

  12. SODOBNA DAVČNA UPRAVA IN KADRI

    OpenAIRE

    Kovačič, Matej

    2011-01-01

    Sodobna družba narekuje optimizacijo in stalno prilagajanje vseh delovnih procesov, pogojev dela in delavcev v vsaki organizaciji. Izjeme niso tudi organi v sestavi vlade, ki spadajo v negospodarsko panogo. Davčna uprava ima eno od ključnih nalog v državni upravi, saj skrbi za proračun in financiranje države. Država bo uspešna le ob pogoju, da bo imela učinkovito, sodobno in moderno davčno upravo. Če hoče davčna uprava postati sodobna, mora stalno slediti novim trendom razvoja, prilagajati de...

  13. KVALITETA MESA LUBINA TIJEKOM POHRANE NA LEDU

    OpenAIRE

    Bojanić, Krunoslav; Kozačinski, Lidija; Filipović, Ivana; Zdolec, Nevijo; Njari, Bela

    2009-01-01

    Cilj ovog rada bio je odrediti održivost mesa lubina tijekom njegove pohrane na ledu u trajanju od 12 dana pracenjem senzornih, fizikalno-kemijskih i mikrobioloških parametara kakvoce i higijenske ispravnosti. U tu je svrhu pretraženo 30 lubina 2., 4., 6., 9. i 12. dana pohrane na ledu na 3º C. Senzorna ocjena kvalitete ocijenjena je Quality Index Method testom (QIM) izra!enom za lubina, Dicentrarchus labrax (Icelandic Fisheries Laboratories) i Market testom. Uzorci ri...

  14. Capsazepine, a synthetic vanilloid that converts the Na,K-ATPase to Na-ATPase.

    Science.gov (United States)

    Mahmmoud, Yasser A

    2008-02-01

    Capsazepine (CPZ), a synthetic capsaicin analogue, inhibits ATP hydrolysis by Na,K-ATPase in the presence but not in the absence of K(+). Studies with purified membranes revealed that CPZ reduced Na(+)-dependent phosphorylation by interference with Na(+) binding from the intracellular side of the membrane. Kinetic analyses showed that CPZ stabilized an enzyme species that constitutively occluded K(+). Low-affinity ATP interaction with the enzyme was strongly reduced after CPZ treatment; in contrast, indirectly measured interaction with ADP was much increased, which suggests that composite regulatory communication with nucleotides takes place during turnover. Studies with lipid vesicles revealed that CPZ reduced ATP-dependent digitoxigenin-sensitive (22)Na(+) influx into K(+)-loaded vesicles only at saturating ATP concentrations. The drug apparently abolishes the regulatory effect of ATP on the pump. Drawing on previous homology modeling studies of Na,K-ATPase to atomic models of sarcoplasmic reticulum Ca-ATPase and on kinetic data, we propose that CPZ uncouples an Na(+) cycle from an Na(+)/K(+) cycle in the pump. The Na(+) cycle possibly involves transport through the recently characterized Na(+)-specific site. A shift to such an uncoupled mode is believed to produce pumps mediating uncoupled Na(+) efflux by modifying the transport stoichiometry of single pump units. PMID:18230728

  15. Dependence of Na-K pump current on internal Na+ in mammalian cardiac myocytes.

    Science.gov (United States)

    Mogul, D J; Singer, D H; Ten Eick, R E

    1990-08-01

    Na-K pump current (Ipump) is a function of the intracellular Na+ concentration [( Na+]i). We examined the quantitative relationship between Ipump and [Na+]i in isolated guinea pig ventricular myocytes under steady-state conditions. [Na+]i was controlled and "clamped" at several selected concentrations using wide-tipped pipette microelectrodes, and membrane current was measured using the whole cell patch voltage-clamp technique. Ipump generated at a holding potential of -40 mV was determined by measuring the change in steady-state holding current before and during exposure to dihydroouabain (1 mM); Ipump was measured at 11 levels of [Na+]i ranging from 0 to 80 mM (n = 63) with only one measurement per cell and normalized to cell capacitance to account for differences between myocytes in sarcolemmal surface area. Ipump exhibited a nonlinear dependence on [Na+]i; a Hill analysis of the relationship yielded a half-maximal [Na+]i for pump stimulation of 43.2 mM and a Hill coefficient of 1.53. An alternative analysis of the experimental data was performed assuming that occupation of three internal binding sites by Na+ is required for enzyme turnover. Regression analysis gave the best fit when only two different binding affinities (KD) are postulated. The values are KD1 = 1 mM, KD2 = KD3 = 29 mM. From the analysis using the latter model, the level of [Na+]i at which Ipump saturated closely approximated the theoretical saturation level calculated from published estimates of pump turnover rate and density. The maximal sensitivity of the Na-K pump to changes in [Na+]i occurs when internal [Na+] is within the range for the normal resting physiological level. PMID:2167023

  16. Two-step melting of Na41+

    CERN Document Server

    Zamith, Sébastien; Chirot, Fabien; L'Hermite, Jean-Marc; 10.1063/1.3493375

    2010-01-01

    The heat capacity of the mass selected Na41+ cluster has been measured using a differential nanocalorimetry method. A two-peak structure appears in the heat capacity curve of Na41+, whereas Schmidt and co-workers [ M. Schmidt, J. Donges, Th. Hippler, and H. Haberland, Phys. Rev. Lett. 90, 103401 (2003) ] observed, within their experimental accuracy, a smooth caloric curve. They concluded from the absence of any structure that there is a second order melting transition in Na41+ with no particular feature such as premelting. The observed difference with the latter results is attributed to the better accuracy of our method owing to its differential character. The two structures in the heat capacity are ascribed to melting and premelting of Na41+. The peak at lower temperature is likely due to an anti-Mackay to Mackay solid-solid transition.

  17. Two-step melting of Na41+

    Science.gov (United States)

    Zamith, Sébastien; Labastie, Pierre; Chirot, Fabien; L'Hermite, Jean-Marc

    2010-10-01

    The heat capacity of the mass selected Na41+ cluster has been measured using a differential nanocalorimetry method. A two-peak structure appears in the heat capacity curve of Na41+, whereas Schmidt and co-workers [M. Schmidt, J. Donges, Th. Hippler, and H. Haberland, Phys. Rev. Lett. 90, 103401 (2003)] observed, within their experimental accuracy, a smooth caloric curve. They concluded from the absence of any structure that there is a second order melting transition in Na41+ with no particular feature such as premelting. The observed difference with the latter results is attributed to the better accuracy of our method owing to its differential character. The two structures in the heat capacity are ascribed to melting and premelting of Na41+. The peak at lower temperature is likely due to an anti-Mackay to Mackay solid-solid transition.

  18. Two-step melting of Na(41)(+).

    Science.gov (United States)

    Zamith, Sébastien; Labastie, Pierre; Chirot, Fabien; L'hermite, Jean-Marc

    2010-10-21

    The heat capacity of the mass selected Na(41) (+) cluster has been measured using a differential nanocalorimetry method. A two-peak structure appears in the heat capacity curve of Na(41) (+), whereas Schmidt and co-workers [M. Schmidt, J. Donges, Th. Hippler, and H. Haberland, Phys. Rev. Lett. 90, 103401 (2003)] observed, within their experimental accuracy, a smooth caloric curve. They concluded from the absence of any structure that there is a second order melting transition in Na(41) (+) with no particular feature such as premelting. The observed difference with the latter results is attributed to the better accuracy of our method owing to its differential character. The two structures in the heat capacity are ascribed to melting and premelting of Na(41) (+). The peak at lower temperature is likely due to an anti-Mackay to Mackay solid-solid transition. PMID:20969397

  19. Na+-H+ exchange and Na+-dependent transport systems in streptozotocin diabetic rat kidneys

    International Nuclear Information System (INIS)

    The streptozotocin-induced diabetic rat was used to test the hypothesis that Na+-H+ exchange activity in the proximal tubule luminal membrane would be increased in association with renal hypertrophy, altered glomerular hemodynamics, enhanced filtered load and tubular reabsorption of 22Na+, and stimulated 22Na= pump activity in the basolateral membrane, previously reported characteristics of this experimental animal model. Amiloride-sensitive H+ gradient-dependent Na+ uptake and Na+ gradient-dependent H+ flux were increased in brush-border membrane vesicles from the streptozotocin-treated animals. Na+ gradient-dependent uptakes of phosphate, D-glucose, L-proline, and myoinositol were decreased in the drug-induced diabetic animals. These membrane transport alterations were not found when the streptozotocin-diabetic animals were treated with insulin

  20. LEDINSKA IN HIŠNA IMENA V SPODNJEM RAZBORJU, ZGORNJEM RAZBORJU IN NA SELAH

    OpenAIRE

    Špegel, Petra

    2012-01-01

    V diplomskem delu z naslovom Ledinska in hišna imena v Spodnjem Razborju, Zgornjem Razborju in na Selah, so zbrana ledinska in hišna imena v izbranih naseljih občine Slovenj Gradec. Na tem območju se govori mežiško narečje, ki spada v koroško narečno skupino. Govor mežiškega narečja pozna le jakostni oziroma dinamični naglas, intonacija je padajoča, vokalni sistem pa je monoftongično-diftongičen. Gradivo je pridobljeno na terenu, od tega so hišna imena najprej prepisana iz Telefonskega imenik...

  1. Uma nova espécie de Dadayius Fukui, 1929 (Digenea: Cladorchiidae parasita do trato intestinal de Metynnis maculatus (Kner, 1858 (Characidae da planície de inundação do alto rio Paraná, Brasil - DOI: 10.4025/actascibiolsci.v25i2.2044 A new species of Dadayius Fukui, 1929 (Digenea: Cladorchiidae, parasite of the intestinal tract of Metynnis maculates (Kner, 1858 (Characidae from the Upper Paraná River floodplain, Brazil - DOI: 10.4025/actascibiolsci.v25i2.2044

    Directory of Open Access Journals (Sweden)

    Ricardo Massoto Takemoto

    2003-04-01

    Full Text Available Uma nova espécie de Cladorchiidae (Trematoda, Digenea foi encontrada no trato intestinal do peixe de água-doce “pacu peva”, Metynnis maculatus (Kner, 1858 na planície de inundação do Alto Rio Paraná, Brasil. A nova espécie foi classificada no gênero Dadayius Fukui, 1929 por apresentar testículos não lobados e acetábulo ventro-terminal com um “entalhe” postero-mediano na margem interior, características do gênero que possui apenas duas espécies conhecidas. Algumas características que diferem a espécie nova de D. marenzelleri (Daday, 1907 e D. pacuensis Thatcher, 1996 são cecos não alcançando o acetábulo, vitelária de extensão limitada e não atingindo o nível do testículo posterior e a presença de dois tamanhos diferentes de ovos em dois estágios de maturação diferentes.A new species of Cladorchiidae (Trematoda, Digenea was found in the intestinal tract of freshwater fish “pacu peva”, Metynnis maculates (Kner, 1858 from the Upper Paraná River floodplain, southern Brazil. The new species was classified in the genus Dadayius Fukui, 1929 by having non-lobate testis and a ventro-terminal acetabulum with postero median notch on rim, characters of the genus wich has only two previously known species. Some characters that differ the new species from D. marenzelleri (Daday, 1907 and D. pacuensis Thatcher, 1996 are: ceca not reaching acetabulum, vitellaria of limited extension, not reaching the level of posterior testis and the presence of two different egg sizes in two different maturity stages.

  2. KARAKTERIZACIJA ADSORPCIJE NANODELCEV HITOZANA NA CELULOZNO MATRICO

    OpenAIRE

    Turalić, Enisa

    2012-01-01

    Za doseganje protimikrobnih lastnosti tekstilnih materialov obstajajo številne metode funkcionalizacij. Pri večini teh metod se še zmeraj uporabljajo reagenti, ki so človeku in okolju neprijazni, saj lahko vsebujejo anorganske soli, fenole in tiofenole, antibiotike, derivate formaldehida, itd. Zlasti aktualen na področju funkcionalizacije tekstilij je hitozan. Tako kot v farmaciji in kozmetiki je tudi na področju razvoja medicinskih tekstilij trend v uporabi nanodelcev za doseganje funkciona...

  3. KOMUNICIRANJE Z MLADIMI NA PRIMERU MLADINSKEGA HOTELA

    OpenAIRE

    Praper, Jože

    2010-01-01

    Diplomska naloga obravnava komuniciranje z mladimi na primeru mladinskega hotela, kateremu so odnosi z javnostmi mladih še posebej pomembni. Poudarek je na obravnavi novih elektronskih oz. sodobnih medijev, povezanih z internetom in mobilnimi telefoni. Ugotovitev diplomske naloge je, da delež komuniciranja mladih z novimi mediji raste in da vedno več mladinskih hotelov uporablja nove medije, kot so spletne strani, Facebook, Netlog, RSS, YouTube, Twiter, Flicker, za predstavljanje, promoviranj...

  4. SVETOVALEC ZA CEPLJENJE NA OPERACIJSKEM SISTEMU ANDROID

    OpenAIRE

    Kralj, Primož

    2012-01-01

    Cepljenje proti boleznim in informiranje o le-teh je pomemben vidik zagotavljanja zdravja na potovanjih pa tudi doma. V diplomskem delu bomo najprej nekoliko osvetlili ozadje operacijskega sistema Android z opisom in zgodovino in nato predstavili pomen informiranja za posameznikovo zdravje. Prikazali bomo izdelavo Android mobilne aplikacije, ki akumulira podatke iz zanesljivih virov in jih prikaže v strnjeni obliki, obenem pa omogoča tudi izčrpnejše informiranje, izdelavo na...

  5. An Update on NA50 and LUCIFER

    CERN Document Server

    Kahana, D E

    1999-01-01

    Recent analysis of both new (1998) and old (1995,1996) data obtained by the NA50 Collaboration on J/Psi suppression in Pb+Pb are examined in light of our already existing calculations with the relativistic heavy ion simulation LUCIFER. In particular we comment on the unexplained change of transverse energy scale by NA50 and the apparent disappearance from the data of discontinuities in the suppression with transverse energy.

  6. PRIPRAVLJENOST EES NA ELEKTROMOBILNOST V SLOVENIJI

    OpenAIRE

    Peklar, Jožef

    2016-01-01

    Naloga predstavlja trenutno stanje razvitosti elektromobilnosti v Sloveniji, njeno ekonomsko upravičenost ter elektroenergetske zmožnosti sistema za popolno elektrifikacijo osebnega prometa. Namen naloge je opozoriti na energijsko odvisnost Slovenije in na področja v energetiki, v katerih se bo pojavilo največ problemov zaradi uvedbe elektromobilnosti. Podan je tudi finančni izračun uvedbe elektromobilnosti osebnega prometa Slovenije ter dejanske elektroenergetske zmogljivosti mesta Maribor z...

  7. Theoretical study of Na(4p2P)+Na(3s2S) and Cd(5p3P0)+Na(3s2S) collisions and their role in the energy transfer between Cd* and Na

    International Nuclear Information System (INIS)

    We have computed the cross sections for the energy transfer process Cd(5p3P0) + Na(3s2S) →Cd(5s1S) + Na(4p2P) and for the state changing collision Na(4p2P) + Na(3s2S)→Na(3d2D) + Na(3s2S), based on theoretical interaction potentials for the NaCd and Na2 systems, respectively. Our calculations shed light on the interpretation of experiments with laser excited Na+Cd vapour mixtures. It turns out that Cd(5p3P0), in rapid equilibrium with the doorway state Cd(5p3P1), efficiently transfers energy to Na, populating the 4p2P state. The collisions with ground state Na cause a very fast conversion of the 4p2P to the 3d2D state, from which the strongest emission is observed. (orig.)

  8. Proizvodnja sirnih namaza na bazi kvarka s dodatkom sojinog brašna

    OpenAIRE

    Carić, Marijana; Milanović, Spasenija; Gavarić, Dragoljub; Levai, Marija

    1981-01-01

    Članak opisuje pokusni rad u proizvodnji sirnih namaza uz dodatak sojinog brašna. Obogaćivanje kvarka sojinim brašnom povećava sadržaj proteina i nutritivnu vrijednost proizvoda. U kvarku sa sojinim brašnom povećava se suha tvar od prosječno 30,60 na 33,15 %, a proteini od 12,36 na 15,24 %.

  9. Capsazepine, a synthetic vanilloid that converts the Na,K-ATPase to Na-ATPase

    OpenAIRE

    Mahmmoud, Yasser A.

    2008-01-01

    Capsazepine (CPZ), a synthetic capsaicin analogue, inhibits ATP hydrolysis by Na,K-ATPase in the presence but not in the absence of K+. Studies with purified membranes revealed that CPZ reduced Na+-dependent phosphorylation by interference with Na+ binding from the intracellular side of the membrane. Kinetic analyses showed that CPZ stabilized an enzyme species that constitutively occluded K+. Low-affinity ATP interaction with the enzyme was strongly reduced after CPZ treatment; in contrast, ...

  10. Elastic Coulomb breakup of $^{34}$Na

    CERN Document Server

    Singh, G; Chatterjee, R

    2016-01-01

    Purpose : The aim of this paper is to study the elastic Coulomb breakup of $^{34}$Na on $^{208}$Pb to give us a core of $^{33}$Na with a neutron and in the process we try and investigate the one neutron separation energy and the ground state configuration of $^{34}$Na. Method : A fully quantum mechanical Coulomb breakup theory within the architecture of post-form finite range distorted wave Born approximation extended to include the effects of deformation is used to research the elastic Coulomb breakup of $^{34}$Na on $^{208}$Pb at 100 MeV/u. The triple differential cross-section calculated for the breakup is integrated over the desired components to find the total cross-section, momentum and angular distributions as well as the average momenta, along with the energy-angular distributions. Results : The total one neutron removal cross-section is calculated to test the possible ground state configurations of $^{34}$Na. The average momentum results along with energy-angular calculations indicate $^{34}$Na to ha...

  11. Perfil nutricional na artrite reumatoide

    Directory of Open Access Journals (Sweden)

    Rachel Simone Maccarini Zarpellon

    2014-01-01

    Full Text Available Objetivo: Estudar o perfil nutricional de pacientes com artrite reumatoide (AR. Métodos: Estudo transversal observacional de 102 pacientes com AR. Os pacientes foram estudados para dados clínicos, demográficos, sorológicos, atividade de doença e perfil nutricional. Neste último incluiu-se a medida do índice de massa corporal (IMC, relação quadril/cintura, pregas cutâneas bicipitais (PCB e sua adequação; prega cutânea tricipital (PCT e sua adequação e circunferência muscular do braço (CMB e sua adequação. Estudos de associação foram feitos usando os testes de Fisher e qui-quadrado para dados nominais e teste t não pareado e Mann Whitney para dados numéricos. Para cálculo de correlação usou-se o teste de Spearman. Resultado: Na amostra existiam 14/102 homens e 88/102 mulheres com idade média de 52,1 ± 11,5 anos e duração média de doença de 10,6 ± 7,4 anos. A relação cintura/quadril média era de 0,92 ± 0,07. De acordo com IMC, 30,3% tinham peso normal e 65,5% tinham peso acima do normal. De acordo com PCB, 74,5% eram normais e 25,5% tinham depleção; de acordo com a PCT, 83,3% eram normais e 16,7% tinham depleção. Associação de variáveis nutricionais com gênero, fator reumatoide, nódulos e atividade da doença não mostraram diferenças (p = NS exceto, por uma relação cintura/quadril menor em indivíduos com nódulos (p = 0,02 e uma correlação modesta da PCT com a duração de doença (p = 0,02; R = 0,22; 95% IC = 0,01-0,40. Conclusão: Existe uma alta prevalência de sobrepeso e obesidade em artrite reumatoide e uma pequena frequência de depleção muscular.

  12. UTJECAJ KOMUNIKACIJE UPRAVNIH MENADŽERA NA SIGURNOST I ZDRAVLJE NA RADU

    OpenAIRE

    Markič, Mirko; Kolenc, Igor; Miklavčič Šumanski, Martina

    2009-01-01

    SAŽETAK: U menadžerskoj praksi upotrebljava se mnogo preventivnih alata (npr. najbolje prakse, usporedna ocjenjivanja, ocjenjivački modeli itd.) kojima se neprekidno poboljšava stanje na području sigurnosti i zdravlja na radu. Budući da je komuniciranje jedno od ključnih sastavnih dijelova, koji utječu na kulturu sigurnosti i uspješnosti preventivnih djelovanja, zanimalo nas je kako slovenski upravni menadžeri komuniciraju i kako, glede sigurnosti i zdravlja na radu, stupanj komunikacije utje...

  13. Doprinosi na dodatne zarade i njihov utjecaj na tržište rada

    OpenAIRE

    Zuber, Marija

    2003-01-01

    Uvođenjem obveze plaćanja doprinosa na skoro sve oblike zarada koje fizičke osobe ostvaruju na temelju radnog angažiranja bez zasnovanoga radnog odnosa gotovo je izjednačeno opterećenje plaća i zarada koje se ostvaruju radom po ugovoru o djelu. Dopunom propisa koji uređuju sustav obveznoga mirovinskog i zdravstvenog osiguranja znatno su približena socijalna prava koja se ostvaruju na temelju radnog odnosa i socijalna prava po osnovi doprinosa plaćenih na dodatne zarade. Iako su tako bitne pro...

  14. Elastic Coulomb breakup of 34Na

    Science.gov (United States)

    Singh, G.; Shubhchintak, Chatterjee, R.

    2016-08-01

    Background: 34Na is conjectured to play an important role in the production of seed nuclei in the alternate r -process paths involving light neutron rich nuclei very near the β -stability line, and as such, it is important to know its ground state properties and structure to calculate rates of the reactions it might be involved in, in the stellar plasma. Found in the region of `island of inversion', its ground state might not be in agreement with normal shell model predictions. Purpose: The aim of this paper is to study the elastic Coulomb breakup of 34Na on 208Pb to give us a core of 33Na with a neutron and in the process we try and investigate the one neutron separation energy and the ground state configuration of 34Na. Method: A fully quantum mechanical Coulomb breakup theory within the architecture of post-form finite range distorted wave Born approximation extended to include the effects of deformation is used to research the elastic Coulomb breakup of 34Na on 208Pb at 100 MeV/u. The triple differential cross section calculated for the breakup is integrated over the desired components to find the total cross-section, momentum, and angular distributions as well as the average momenta, along with the energy-angular distributions. Results: The total one neutron removal cross section is calculated to test the possible ground state configurations of 34Na. The average momentum results along with energy-angular calculations indicate 34Na to have a halo structure. The parallel momentum distributions with narrow full widths at half-maxima signify the same. Conclusion: We have attempted to analyze the possible ground state configurations of 34Na and in congruity with the patterns in the `island of inversion' conclude that even without deformation, 34Na should be a neutron halo with a predominant contribution to its ground state most probably coming from 33Na(3 /2+)⊗ 2 p3 /2ν configuration. We also surmise that it would certainly be useful and rewarding to test our

  15. Na+ uptake into colonic enterocyte membrane vesicles

    International Nuclear Information System (INIS)

    Na+ uptake was studied in colonic enterocyte membrane vesicles prepared from normal and dexamethasone-treated rats. Vesicles from rats treated with dexamethasone demonstrated a fivefold greater 22Na+ uptake compared with vesicles from normal rats. Most of the tracer uptake in membranes derived from treated rats occurred through a conductive, amiloride-blockable pathway located in vesicles with low native K+ permeability and high Cl- permeability. Kinetic analysis of the amiloride inhibition curve revealed the presence of two amiloride-blockable pathways, one with a high affinity accounting for 85% of the uptake, and one with a low affinity accounting for only 12% of the uptake. Only the low-affinity pathway was detected with vesicles from normal rats. The high sensitivity to amiloride, the dependence on dexamethasone pretreatment, and the relative permeabilities to K+ and Cl- indicate that most of the 22Na+ uptake in membranes derived from treated rats is through a Na+-specific channel located in apical membrane vesicles. Preincubation of the isolated cells from dexamethasone-treated rats at 37 degree C in Ca2+-free solutions before homogenization and membrane vesicle purification caused a 5- to 10-fold increase in amiloride-blockable 22Na+ uptake compared with vesicles derived from cells maintained at 0 degree C. The addition of Ca2+, but not of Mg2+, to the incubation solution markedly reduced this temperature-dependent enhancement in 22Na+ uptake. These results suggest that Na+ transport in colonic enterocytes from dexamethasone-treated rats is regulated by a Ca2+-dependent, temperature-sensitive process which causes a sustained change in the apical membrane

  16. VPLIV CENE NA ZADOVOLJSTVO IN ZVESTOBO UPORABNIKOV TELEKOMUNIKACIJSKIH STORITEV

    OpenAIRE

    Majcen, Mateja

    2016-01-01

    Cena izdelka ali storitve, ki jo plača uporabnik, ima pomemben vpliv na zadovoljstvo ali nezadovoljstvo uporabnika z uporabo tega izdelka ali storitve in posledično na zadovoljstvo do podjetja. Glede na to, da se različni avtorji strinjajo in to tudi dokazujejo z raziskavami, zadovoljstvo nedvoumno vpliva na zvestobo uporabnika, zvestoba pa na dolgoročno uspešnost podjetja, smo v delu ugotavljali, kako sama cena storitve vpliva na zadovoljstvo in kako posredno preko zadovoljstva vpliva na zve...

  17. PRAVNI OKVIR PRIREJANJA IGER NA SREČO V EU

    OpenAIRE

    Mihalič, Emil

    2010-01-01

    Osrednja tema diplomske naloge je pravna ureditev oziroma pravni okvir organiziranja iger na srečo v okviru Evropske unije in problematika čezmejnega vpliva le-teh ter vpliv prava EU na potrebno uskladitev nacionalne zakonodaje iger na srečo v Republiki Sloveniji s pravom EU. Raznolikost nacionalnih ureditev področja iger na srečo kaže na to, da bo morebitna harmonizacija področja iger na srečo vse prej kot enostavno delo. Marsikje se za na videz transparentnimi in legitimnimi razlogi ome...

  18. Kontrola točke staljivanja na aglomeracijskoj traci

    OpenAIRE

    J. Terpák; Dorčák, L'.; I. Koštial; L. Pivka

    2005-01-01

    U radu se opisuje kontrola točke staljivanja sintera na aglomeracijskoj traci. Ta se kontrola zasniva na matematičkom modeliranju aglomeracijskog procesa. Matematički modeli i algoritmi su izvedeni iz temeljnih modela fizičkih i kemijskih procesa na aglomeracijskoj traci i osnivaju se na izravno i neizravno izmjerenim količinama na aglomeracijskoj traci. Kontrola kretanja naprijed se zasniva na količini plina izgorenog u potpalnoj peći i na količini i sastavu sirove mješavine. Ta veličina se ...

  19. O Passeio Público do Rio de Janeiro na Literatura, na Pintura e na Fotografia do Século XIX

    Directory of Open Access Journals (Sweden)

    Solange de Aragão

    2012-06-01

    Full Text Available Este artigo tem como objetivo geral e mais amplo chamar a atenção dos pesquisadores para a importância da literatura, da pintura e da fotografia como fontes documentais para a construção da História do Paisagismo no Brasil por meio de um estudo de caso muito particular: o Passeio Público do Rio de Janeiro no século XIX. São objetivos específicos apresentar e analisar o modo como esse espaço livre público aparece na literatura, na pintura e na fotografia desse período, considerando suas transformações paisagísticas.

  20. Trychtýřová anténa na bázi HMSIW

    OpenAIRE

    Černý, Matěj

    2015-01-01

    Práce se zabývá technologií vlnovodu integrovaného do substrátu pracujícího v polovičním módu (HMSIW) a možnostmi návrhu trychtýřové antény založené na této technologii. Na základě získaných poznatků je HMSIW trychtýřová anténa modelována v programu CST Microwave Studio. Hlavní pozornost je zaměřena na vliv geometrických parametrů antény na její vyzařování a činitel odrazu na vstupu antény. Bylo dosaženo zisku hlavního laloku 6 dBi, který je vychýlen od požadovaného směru o 30°. Anténa má pra...

  1. NaI(Tl) electron energy resolution

    International Nuclear Information System (INIS)

    NaI(Tl) electron energy resolution ηe was measured using the Modified Compton Coincidence Technique (MCCT). The MCCT allowed detection of nearly monoenergetic internal electrons resulting from the scattering of incident 662 keV gamma rays within a primary NaI(Tl) detector. Scattered gamma rays were detected using a secondary HPGe detector in a coincidence mode. Measurements were carried out for electron energies ranging from 16 to 438 keV, by varying the scattering angle. Measured HPGe coincidence spectra were deconvolved to determine the scattered energy spectra from the NaI(Tl) detector. Subsequently, the NaI(Tl) electron energy spectra were determined by subtracting the energy of scattered spectra from the incident source energy (662 keV). Using chi-squared minimization, iterative deconvolution of the internal electron energy spectra from the measured NaI(Tl) spectra was then used to determine ηe at the electron energy of interest. ηe values determined using this technique represent variations in light production from monoenergetic electrons, light collection at the photomultiplier tube (PMT) photocathode, photoelectron production, photoelectron collection at the first dynode, and PMT gain, as well as noise from the accompanying electronics. It has been found that the electron energy resolution varies from 24.8% at 16 keV to 6.7% at 438 keV. Results from this study can be used to verify the significance of the different contributions to intrinsic energy resolution

  2. Electron induced sodium emission from NaCl surface

    International Nuclear Information System (INIS)

    Experimental data are presented on the sputtering of NaCl surface by electrons with varying electron current density and at different target temperatures. The Na D doublet intensity due to sputtering of excited Na atoms has been simultaenously measured with the neutral Na flux. The results can be understood if it is assumed that the neutral Na atoms vaporize from partially sodium covered surface and can subsequently be excited in electron - atom collisions. (Author)

  3. Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar

    Directory of Open Access Journals (Sweden)

    D. Heinrich

    2008-05-01

    Full Text Available We present summer Na-densities and atmospheric temperatures measured 80 to 110 km above the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR. The Weber Na Lidar is part of ALOMAR, located at 69° N in Norway, 150 km north of the Arctic Circle. The sun does not set here during the summer months, and measurements require a narrowband Faraday Anomalous Dispersion Optical Filter (FADOF.

    We discuss an observed sudden enhancement in the Na number density around 22:00 UT on 1 to 2 June 2006. We compare this observation with previous summer measurements and find a frequent appearance of Na number density enhancements near local midnight. We describe the time of appearance, the altitude distribution, the duration and the strength of these enhancements and compare them to winter observations. We investigate possible formation mechanisms and, as others before, we find a strong link between these Na number density enhancements and sporadic E layers.

  4. Metallic Na formation in NaCl crystals with irradiation of electron or vacuum ultraviolet photon

    Energy Technology Data Exchange (ETDEWEB)

    Owaki, Shigehiro [Osaka Prefecture Univ., Sakai, Osaka (Japan). Coll. of Integrated Arts and Sciences; Koyama, Shigeko; Takahashi, Masao; Kamada, Masao; Suzuki, Ryouichi

    1997-03-01

    Metallic Na was formed in NaCl single crystals with irradiation of a variety of radiation sources and analyzed the physical states with several methods. In the case of irradiation of 21 MeV electron pulses to the crystal blocks, the optical absorption and lifetime measurement of positron annihilation indicated appearance of Na clusters inside. Radiation effects of electron beam of 30 keV to the crystals in vacuum showed the appearance of not only metallic Na but atomic one during irradiation with Auger electron spectroscopy. Intense photon fluxes in vacuum ultraviolet region of synchrotron radiation were used as another source and an analyzing method of ultraviolet photoelectron spectroscopy. The results showed the metallic Na layered so thick that bulk plasmon can exist. (author)

  5. Diffusion of propylene adsorbed in Na-Y and Na-ZSM5 zeolites: Neutron scattering and FTIR studies

    Indian Academy of Sciences (India)

    S Gautam; A K Tripathi; V S Kamble; S Mitra; R Mukhopadhyay

    2008-11-01

    Here we report the quasielastic neutron scattering and FTIR studies on the dynamics of propylene adsorbed in Na-Y and Na-ZSM5 zeolites. QENS data show that although the mechanism of translational motion of propylene is jump diffusion in both the cases of Na-Y and Na-ZSM5 zeolites, the diffusivity is affected by the host size and is hindered in the case of Na-ZSM5. FTIR studies showed that guest–host interaction in Na-ZSM5 is stronger than that in Na-Y zeolite corroborating the QENS results.

  6. Crystal structure of a Na+-bound Na+,K+-ATPase preceding the E1P state.

    Science.gov (United States)

    Kanai, Ryuta; Ogawa, Haruo; Vilsen, Bente; Cornelius, Flemming; Toyoshima, Chikashi

    2013-10-10

    Na(+),K(+)-ATPase pumps three Na(+) ions out of cells in exchange for two K(+) taken up from the extracellular medium per ATP molecule hydrolysed, thereby establishing Na(+) and K(+) gradients across the membrane in all animal cells. These ion gradients are used in many fundamental processes, notably excitation of nerve cells. Here we describe 2.8 Å-resolution crystal structures of this ATPase from pig kidney with bound Na(+), ADP and aluminium fluoride, a stable phosphate analogue, with and without oligomycin that promotes Na(+) occlusion. These crystal structures represent a transition state preceding the phosphorylated intermediate (E1P) in which three Na(+) ions are occluded. Details of the Na(+)-binding sites show how this ATPase functions as a Na(+)-specific pump, rejecting K(+) and Ca(2+), even though its affinity for Na(+) is low (millimolar dissociation constant). A mechanism for sequential, cooperative Na(+) binding can now be formulated in atomic detail. PMID:24089211

  7. Recent results from NA61/SHINE

    CERN Document Server

    Kowalski, Seweryn

    2015-01-01

    The aim of the NA61/SHINE ion programme is to explore the QCD phase diagram within the range of thermodynamical variables accessible by the SPS. Moreover the experiment provides precision hadron production measurements to improve computation of neutrino fluxes in neutrino oscillation experiments and for improving air shower simulations of cosmic-ray experiments. The main physics goals of the NA61/SHINE ion programme are the study of the properties of the onset of deconfinement and the search for signatures of the critical point of strongly interacting matter. These goals are pursued by performing an energy (beam momentum 13A – 158 A GeV/c) and system size (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La) scan. This paper reviews the status and results of the NA61/SHINE experiment.

  8. UTJECAJ GMO NA EKOLOŠKU POLJOPRIVREDU

    OpenAIRE

    Fagan, John

    2008-01-01

    Gotovo svi znanstvenici se slažu da su danas uobičajene metode za ugradnju novog gena u genom biljke putem genetičkog inženjerstva (genetičke modifikacije): (1) neprecizne i slučajne, (2) pa je njihov utjecaj na biološke funkcije biljke nepredvidiv, (3) a neželjeni učinci GMO na zdravlje konzumenta i na okoliš mogući. Korištenje GMO u ekološkoj poljoprivredi je zabranjeno, stoga potrošač vjeruje da oznaka “ekološki” zakonski štiti od prisustva GMO u hrani. Međutim, povećano korištenje GMO u k...

  9. Eletrencefalograma na síndrome parkinsoniana

    Directory of Open Access Journals (Sweden)

    José Geraldo Camargo Lima

    1973-09-01

    Full Text Available Foram estudados os eletrencefalogramas de 50 pacientes parkinsonianos livres de qualquer antecedente convulsivo, sendo registrados traçados anormais em 40% dos casos. A incidência de traçados anormais foi maior na síndrome parkinsoniana bilateral do que na unilateral (52% e 25%, respectivamente. Entre as anormalidades assinaladas foram as paroxísticas as mais freqüentes (65% dos casos, caracterizando-se predominantemente por surtos de ondas teta. O registro de anormalidades paroxísticas do tipo irritativo encontrado em três casos é salientado. Alterações da atividade de base foram assinaladas em 35% dos pacientes. A idade dos pacientes não parece ter tido importante papel na gênese das anormalidades eletrencefalográficas.

  10. Tecnologia simplificada na enfermagem materno infantil

    Directory of Open Access Journals (Sweden)

    Selma Campestrini

    1991-09-01

    Full Text Available A autora apresenta três modelos de tecnologia simplificada da enfermagem materno infantil: o equipamento didático SEIO COBAIA para treinar exercícios e massagens da mama e mamilo; a peça indumentária SUPRETRAUMA - sutiã preventivo de traumatismo mamilar - usado por gestantes; e, a técnica para reverter mamilo umbilicado durante o puerperio imediato. Além de corroborar na promoção do aleitamento materno e na prevenção de desmame precoce, demonstra a possibilidade da enfermagem relacionar o saber teórico-científico com o saber tecnico-prático, na saúde da mulher e da criança, com tecnologia adequada às necessidades, à compreensão e ao bem estar da população.

  11. DIVERZIFICIRANA RAST NA PRIMERU PODJETJA SPORTINA GROUP

    OpenAIRE

    Berič, Jernej

    2014-01-01

    Trg v 21. stoletju je nasičen z raznovrstnimi izdelki in storitvami, ki jih ponujajo najrazličnejša podjetja. Govorimo o konkurenci, ki je že tako močna, da morajo nekatera podjetja v svoj sistem uvesti kopico sprememb, da lahko prekosijo konkurente. Prevzemanje tveganja lahko doprinese velik dobiček, lahko pa tudi veliko izgubo. Zato morajo podjetja ubrati strategijo, pri kateri obstaja visoka verjetnost rasti in dobička ter s tem nadaljnjega obstoja podjetja na trgu. Za uspešnost prihodnjeg...

  12. (Na, Sr)-Feldspars: an experimental study

    International Nuclear Information System (INIS)

    The distribution of Na and Sr between feldspar (albite-Sr-celsian series) and a salt-bearing fluid at 700 deg C and 2 kbar was studied experimentally. The distribution of the elements between feldspar and the fluid is not ideal. Strontium enriches feldspar relative to the fluid over the entire compositional range. The unit cell parameters of the albite-Sr-celsian solid solutions were refined. The experimental data are used to calculate the excess volumes and energies of mixing of the solid solutions of (Na, Sr)-feldspars, which are approximated by a two-parameter Margules model. 28 refs., 6 figs., 6 tabs

  13. VPLIV ORGANIZACIJSKE SUBKULTURE IN SPOLA NA PRIJATELJSTVO

    OpenAIRE

    Koporec Oberčkal, Aleksander

    2011-01-01

    Doktorska disertacija je sestavljena iz teoretičnega in empiričnega dela. Teoretične ugotovitve so opisane v štirih poglavjih. Prvo poglavje predstavlja uvod. V drugem poglavju opisujemo pomen dobrih medosebnih odnosov in mehanizme psihosocialnih interakcij. Teorije in modeli, ki opisujejo dva različna pogleda na vzpostavitev, vzdrževanje in prekinitev medosebnih odnosov, in sicer linearni in ciklični, predstavljajo jedro drugega poglavja. V tretjem poglavju opisujemo prijateljstvo. Različne ...

  14. Numerična simulacija varjenja

    OpenAIRE

    Štumberger, Matevž

    2016-01-01

    Magistrsko delo predstavlja numerično simulacijo varjenja. Varjenje je spajanje kovinskih ali nekovinskih delov s postopki dodajanja materiala. Proces varjenja je v programskem paketu Abaqus/CAE obravnavan kot nevezana toplotno – mehanska analiza z ločenim izračunom temperaturnega in napetostnega polja. Gibajoči toplotni varilni vir je modeliran na način definiranja začetne temperaturne porazdelitve v zvarni kopeli. Zaradi kompleksnosti fizikalnega dogajanja v zvarni kopeli je potrebno določe...

  15. SLOVAČKA JAMA NA SJEVERNOM VELEBITU

    OpenAIRE

    Bakšić, Darko; Jalžić, Branko; Lacković, Damir

    2000-01-01

    Pri rekognosciranju terena, 28. srpnja 1995., slovački speleolozi B. Šmida i M. Griflik pronašli su ulaz u Slovačku jamu. Nakon devetodnevnih speleoloških istraživanja Slovaci se spustili do "dna" na dubini od 514 m. Tom prilikom zamijećen je horizontalni kanal, -350 m. Tijekom ljeta 1996. Slovaci zajedno s kolegama iz Planinarskog društva Sveučilišta "Velebit" nastavljaju istraživanja Slovačke jame u horizontalnom kanalu na 350 dubine. Tri tjedna kasnije spustili su se do dubine od 100...

  16. Analiza poslovanja na kmetiji s prirejo mleka

    OpenAIRE

    Polh, Mihela

    2012-01-01

    Cilj raziskave je analizirati poslovanje na izbrani kmetiji, ki se ukvarja s prirejo mleka, in nadalje ocena ekonomske upravičenosti prireje mleka v letu 2010. Za oceno ekonomske upravičenosti prireje mleka na kmetiji smo razvili tehnološko-ekonomski simulacijski model s pripadajočimi podmodeli. Za kmetijsko proizvodnjo smo ocenjevali pomembnejše ekonomske parametre, kot so koeficient ekonomičnosti (Ke), lastno ceno (LC), finančni rezultat (FR) in prihodek (SP). Rezultati ekonomske analize pr...

  17. Alberto Sampaio na arqueologia do seu tempo

    OpenAIRE

    Lemos, Francisco Sande

    1992-01-01

    Pela segunda vez, no espaço de um ano, temos a grata oportunidade de colaborar com a Sociedade Martins Sarmento, em actos de homenagem a personagens ilustres que deixaram um sulco profundo nos labores da arqueologia. Em Fevereiro do corrente ano (1991), numa cerimónia realizada na sede da Sociedade, evocamos Martins Sarmento e a sua dimensão como investigador europeu. Na presente sessão recordamos um outro investigador, nascido em Guimarães, Alberto Sampaio, que pela sua vida e obra foi um ho...

  18. O problema do conhecimento verdadeiro na epidemiologia

    Directory of Open Access Journals (Sweden)

    Ayres José Ricardo de Carvalho Mesquita

    1992-01-01

    Full Text Available São examinadas as bases filosóficas da validação do conhecimento científico, com o intuito de estabelecer uma visão crítica a respeito da adoção das proposições de Popper na epidemiologia. Ressalta-se o caráter conservador que resulta das limitações técnicas implicadas na sua adoção, não obstante o evidente aumento da racionalidade e da criatividade heurística que propicia.

  19. NOVOSTI NA PODROČJU HIPOTEKARNEGA PRAVA

    OpenAIRE

    Kotnik, Nuša

    2012-01-01

    Hipoteka v našem slovenskem pravnem sistemu poznana že dolgo časa in predstavlja najbolj razširjen institut stvarnopravnega zavarovanja kreditnih pogodb oziroma služi za zavarovanje denarnih terjatev upnika do zastavitelja na nepremičnini. Nepremičnine so zaradi razmeroma visoke in stabilne vrednosti v praksi pomembni objekti stvarnopravnih zavarovanj. Institut hipoteke v materialnem smislu ureja Stvarnopravni zakonik (SPZ). Hipoteka nudi močno jamstvo hipotekarnemu upniku in ga pooblašča, d...

  20. HIPOTEKA - ZASTAVNA PRAVICA NA NEPREMIČNINI

    OpenAIRE

    Radislav, Anja

    2010-01-01

    Zastavna pravica na nepremičninah oziroma hipoteka je kot stvarna pravica celovito urejena v Stvarnopravnem zakoniku, v delu, ki ureja zastavne pravice. Zastavna pravica je splošno urejena v 128. členu SPZ, ki jo določa kot stvarno pravico na točno določeni tuji stvari ali pravici, ki zastavnemu upniku daje upravičenje, da se zaradi neplačila zavarovane terjatve ob njeni zapadlosti poplača skupaj z obrestmi in stroški iz vrednosti zastavljene nepremičnine pred vsemi drugimi upniki zastavitelj...

  1. Ensino de geometria descritiva: inovando na metodologia

    OpenAIRE

    Kopke Regina Coeli Moraes

    2001-01-01

    Com base na observação, durante anos de magistério superior, na área de desenho, dos alunos de Engenharia, Matemática, Arquitetura e Artes, quanto às dificuldades encontradas por eles no aprendizado de desenho, em especial da Geometria Descritiva, é que nos propusemos, em 1999, lecionar essa disciplina para os cursos de Arquitetura e Artes, adotando uma metodologia diferente da convencional, para despertar, no aluno, o gosto pela disciplina e o desenvolvimento de uma habilidade pouco trabalha...

  2. REDNI LETNI RAZGOVORI NA UKC MARIBOR

    OpenAIRE

    Pliberšek, Darja

    2016-01-01

    V diplomskem delu z naslovom »Redni letni razgovori v Univerzitetnem kliničnem centru Maribor« je prikazano trenutno stanje sistema izvajanja rednih letnih razgovorov in njihova praktična učinkovitost. Diplomsko delo je sestavljeno iz teoretičnega in empiričnega dela. V prvem, teoretičnem delu, se seznanimo z opredelitvijo rednega letnega razgovora, predstavljen je pomen rednih letnih razgovorov na ravni posameznika in organizacije ter nameni in cilji izvedbe rednih letnih razgovorov. Opi...

  3. TRPINČENJE (MOBBING) NA DELOVNEM MESTU

    OpenAIRE

    Šiftar, Maja

    2010-01-01

    Diplomsko delo obravnava problem mobbinga na delovnem mestu in vsebuje poleg uvoda še devet poglavij. V drugem poglavju je pojasnjen izvor besede mobbing in njen pomen ter omenjena oseba, ki je mobbing prenesla v delovno okolje. Slovenija je od leta 2004 polnopravna članica Evropske unije in posledica tega je, da pravna ureditev mobbinga v Sloveniji upošteva akte, ki se nanašajo na mednarodne akte, ki določajo diskriminacijo zaposlenih v zvezi z mobbingom. Tako so v nadaljevanju navedeni in o...

  4. DISKRIMINACIJA IN MOBBING NA DELOVNEM MESTU

    OpenAIRE

    Repolusk, Nina

    2011-01-01

    Z globalizacijo, vse hitrejšim tempom življenja in s tem povezanim stresom, se na delovnih mestih vse več pojavljata pojava diskriminacija in mobbing. Pojava sta zelo podobna, vendar pa med njima obstajajo pomembne razlike. Diskriminacija je neupravičeno postavljanje drugega v slabši položaj glede na katero izmed osebnih okoliščin (spol, spolna usmerjenost, starost, rasa, vera ali prepričanje, invalidnost …). Da lahko govorimo, da je delavec diskriminiran, je dovolj, da se to zgodi enkrat, me...

  5. E-GRADIVA NA PRIMERU OBRAVNAVE GLAGOLA

    OpenAIRE

    Kajtna, Tjaša

    2013-01-01

    Sodobne tehnologije so korenito spremenile današnji način življenja. Tako je tudi z izobraževanjem. Vedno več učiteljev ob klasičnih metodah poučevanja uporablja tudi nove pristope, ki so povezani s sodobnimi tehnologijami. V diplomskem delu je opredeljeno e-izobraževanje, predstavljene so nove tehnologije, ki se pojavljajo v povezavi z le-tem. V nadaljevanju sledi teoretična obravnava e-gradiv, ki ob podpori informacijsko komunikacijskih tehnologij predstavljajo temelj e-izobraževanja. ...

  6. Utjecaj granulometrijskog sastava na svojstva procjednog betona

    OpenAIRE

    Mrakovčić, Silvija; Čeh, Nina; Jugovac, Vedrana

    2014-01-01

    U radu su eksperimentalno određena svojstva svježeg i očvrsnulog procjednog betona. Analizirana je zavisnost tlačne čvrstoće, vlačne čvrstoće savijanjem te koeficijenta protočnosti o granulometrijskom sastavu agregata. Budući da ne postoji propisani način određivanja protjecanja vode kroz procjedni beton, ispitivanje je provedeno sukladno poznatim metodama, ali s pomoću samostalno izrađenih pomagala. Na uzorcima s diskontinuiranom granulometrijskom krivuljom, gdje udio frakcije pijeska 0-2 mm...

  7. PODOBA IN ZVOK , VPLIV GLASBE NA SLIKARSTVO

    OpenAIRE

    Hrvatin Jazbec, Katja

    2010-01-01

    Včasih sem se spraševala, zakaj moram vsak teden hoditi na ure klavirja in solfeggia ter se zaradi tega ne morem udeležiti likovnega krožka. Kasneje sem opustila izobraževanje v glasbi in sem se posvetila likovnemu ustvarjanju oziroma slikarstvu. V precej drugačni obliki so se prav tako med glasbo in slikarstvom odločali danes priznani slikarji. Tako se je na primer slikar Paul Klee odločil za slikarstvo, saj bi po lastnem mnenju glasbo lahko samo poustvarjal. Vendar pa je glasba ostala priso...

  8. UPORABA TEHNOLOGIJE VOIP NA MOBILNIH NAPRAVAH SYMBIAN

    OpenAIRE

    Uršič, Tine

    2013-01-01

    V sklopu diplomskega dela smo razvili aplikacijo, katere cilj je nižanje stroškov klicev s pomočjo tehnologije VoIP. Ta za komunikacijo uporablja protokol IP in zaobide potrebo po navadnih in dražjih GSM klicih. V času načrtovanja aplikacije je bilo okolje Symbian najbolj razširjena mobilna platforma za dovolj zmogljive, t.i. »pametne telefone«, ki lahko poganjajo VoIP aplikacije. Izbrali smo skupek knjižnic, poimenovanih Qt, ki omogočajo enostavno prenosljivost na druge platforme. Podr...

  9. AVTOMATIZIRANE TRGOVALNE STRATEGIJE NA FOREX TRGU

    OpenAIRE

    Kresnik, Jan

    2014-01-01

    Trgovanja brez točno določene strategije skoraj ni mogoče objektivno oceniti. Vsak trgovalec ima svojo predstavo o trgu in lahko iz enakih informacij naredi drugačne zaključke kot nek drug trgovalec. Zaradi tega je danes vse bolj v veljavi trgovanje na osnovi algoritmov, ki vedno sprejmejo enako odločitev, in sicer glede na parametre, ki jih trgovalec želi vstaviti v strategijo. Prav tako lahko rezultate ene strategije primerjamo z rezultati druge strategije, saj vemo, da je končni rezultat p...

  10. OCENA KAKOVOSTI VODIJ TIMA NA INTENZIVNEM ODDELKU

    OpenAIRE

    Podsedenšek, Darja

    2016-01-01

    Teoretična izhodišča: Za najboljši možni izid zdravljenja življenjsko ogroženih pacientov je potreben tim, v katerem so vsi zaposleni visoko strokovno usposobljeni, vodje pa odlikujejo sposobnosti načrtovanja, organiziranja in nadzorovanja dela, pa tudi motiviranja, komuniciranja in konstruktivnega reševanja problemov. Hkrati morajo biti tudi zanesljivi, primerno čustveno inteligentni in imeti razvito empatijo, saj naj bi bili vzor ostalim zaposlenim. Namen magistrskega dela je bil ugotoviti...

  11. Karijesprotektivno djelovanje Fluonatrila na zube prve denticije

    OpenAIRE

    Percač, Helena; Ondrušek, V.; Rajić, Zdravko

    1986-01-01

    Ovo istraživanje odnosi se na 210 djece, stare 4 i 5 godina iz Međimurja. Izvršeno je u Medicinskom centru Čakovec. Endogena fluoridacija provedena je kod 141 djeteta, a 59 djece činilo je kontrolnu skupinu. Za endogenu fluoridaciju odabran je preparat »Fluonatril«, tvornice »Belupo«. Preparat se primjenjivao u trudnica od četvrtog mjeseca trudnoće pa do kraja dojenja i u djece od šestog mjeseca kontinuirano svakodnevno. Sistematski pregledi s registracijom nalaza na zubima izvršeni su s 4 i ...

  12. Biomarcadores na saliva - presente e futuro

    OpenAIRE

    Fonseca, Jorge Filipe Raposo

    2014-01-01

    A deteção de biomarcadores na saliva, proteínas que estão associadas a fenótipos de patologias específicas, apresenta-se como uma área de intervenção diagnóstica pouco estudada na atualidade. Foi objetivo deste estudo de acordo com os dados de proteómica/ estudos dirigidos depositados no OralCard referentes a patologias orais e sistémicas: - Realizar uma análise crítica dos biomarcadores até agora propostos; - Identificar que proteínas podem vir a constituir potenciais no...

  13. Znanstveni pogledi na spreobrnitev v alternativne religije

    OpenAIRE

    Volarič, Ariana

    2014-01-01

    Problematika pojasnjevanja spreobrnitve v alternativne religije je v evro-ameriški znanosti prisotna že več kot eno stoletje. V drugi polovici 20. stoletja je s pojavom modela pranja možganov spreobrnitev postala celo kontroverzna populistična tema. Zadnji dve desetletji, ko model pranja možganov zaradi neustrezne argumentacije izgublja na veljavi, je prevladujoči model postal procesualen model. V Sloveniji se srečujemo v glavnem s nedodelanimi aplikacijami v znanosti opuščenega modela pranja...

  14. Vpliv zaupanja na vodenje v zdravstveni negi

    OpenAIRE

    Gajster, Marjetka

    2015-01-01

    Živimo v času, ko se managerji v organizacijah vedno bolj zavedajo, da je zaupanje med sodelavci pomemben dejavnik, saj brez zaupanja ni uspešnega vodenja, brez slednjega ni uspešnih ljudi in tudi ne uspešne organizacije. Namen magistrske naloge je preveriti teoretična spoznanja o zaupanju, vodenju in motivaciji v zdravstveni negi in ugotoviti, če lahko stopnja zaupanja med nadrejenimi in podrejenimi vpliva na vodenje v zdravstveni negi v Splošni bolnišnici Celje, ter kako bi to zaupanje še i...

  15. Ensinar e aprender na Bíblia

    OpenAIRE

    Tércio Machado Siqueira

    2011-01-01

    Ensinar e aprender na BíbliaTeaching and learning in the BibleEnseñanza y el aprendizaje de la BibliaRESUMOEste artigo analisa o conceito de ensinar e aprender na Bíblia a partir das expressões hebraicas lamad e yarah, para, posteriormente, discutir a possibilidade de uma pedagogia libertadora e como aplicá-la, tendo como ponto de partida o ensino no Antigo Testamento.ABSTRACTThis article analyzes the concept of teaching and learning in the Bible based on the Hebrew expressions lamad and yara...

  16. GIMNASTIČNA ABECEDA V VRTCU

    OpenAIRE

    Lipošek, Katja

    2015-01-01

    Diplomska naloga Gimnastična abeceda v vrtcu je teoretično delo, v katerem smo s pomočjo primarnih in sekundarnih virov z deskriptivno, s komparativno in z zgodovinsko metodo raziskali možnosti izvajanja gimnastične abecede v vrtcu. Namen diplomskega dela je pojasniti pojem gimnastična abeceda, opredeliti vlogo gimnastične abecede v vrtcu, ugotoviti pomen gimnastične abecede za gibalni razvoj predšolskih otrok, predstaviti možnosti izvajanja gimnastične abecede pri gibalno/športnih dejavnosti...

  17. UPORABA TEHNOLOGIJE XQUERY NA PRIMERU ISKALNIKA AMISTV

    OpenAIRE

    Počkar, Martin

    2013-01-01

    V diplomskem delu je predstavljena uporaba povpraševalnega jezika XQuery na primeru iskalnika po digitalnem televizijskem sporedu (angl. EPG) na storitvi AmisTV 1.5. Skozi delo so predstavljeni koncepti jezika XQuery in orodja za delo s tem jezikom. Delo predstavi delovanje produkcijskega iskalnika AmisTV 1.5, ki deluje z uporabo relacijske podatkovne baze in jezika SQL, ter praktično rešitev iskalnika z uporabo jezika XQuery. Obe rešitvi sta v diplomskem delu primerjani s statistiko, pridobl...

  18. Role of the Na(+)-translocating NADH:quinone oxidoreductase in voltage generation and Na(+) extrusion in Vibrio cholerae.

    Science.gov (United States)

    Vorburger, Thomas; Nedielkov, Ruslan; Brosig, Alexander; Bok, Eva; Schunke, Emina; Steffen, Wojtek; Mayer, Sonja; Götz, Friedrich; Möller, Heiko M; Steuber, Julia

    2016-04-01

    For Vibrio cholerae, the coordinated import and export of Na(+) is crucial for adaptation to habitats with different osmolarities. We investigated the Na(+)-extruding branch of the sodium cycle in this human pathogen by in vivo (23)Na-NMR spectroscopy. The Na(+) extrusion activity of cells was monitored after adding glucose which stimulated respiration via the Na(+)-translocating NADH:quinone oxidoreductase (Na(+)-NQR). In a V. cholerae deletion mutant devoid of the Na(+)-NQR encoding genes (nqrA-F), rates of respiratory Na(+) extrusion were decreased by a factor of four, but the cytoplasmic Na(+) concentration was essentially unchanged. Furthermore, the mutant was impaired in formation of transmembrane voltage (ΔΨ, inside negative) and did not grow under hypoosmotic conditions at pH8.2 or above. This growth defect could be complemented by transformation with the plasmid encoded nqr operon. In an alkaline environment, Na(+)/H(+) antiporters acidify the cytoplasm at the expense of the transmembrane voltage. It is proposed that, at alkaline pH and limiting Na(+) concentrations, the Na(+)-NQR is crucial for generation of a transmembrane voltage to drive the import of H(+) by electrogenic Na(+)/H(+) antiporters. Our study provides the basis to understand the role of the Na(+)-NQR in pathogenicity of V. cholerae and other pathogens relying on this primary Na(+) pump for respiration. PMID:26721205

  19. Study on Na layer response to geomagnetic activities based on Odin/OSIRIS Na density data

    Science.gov (United States)

    Tsuda, Takuo; Nakamura, Takuji; Hedin, Jonas; Gumbel, Jorg; Hosokawa, Keisuke; Ejiri, Mitsumu K.; Nishiyama, Takanori; Takahashi, Toru

    2016-07-01

    The Na layer is normally distributed from 80 to 110 km, and the height range is corresponding to the ionospheric D and E region. In the polar region, the energetic particles precipitating from the magnetosphere can often penetrate into the E region and even into the D region. Thus, the influence of the energetic particles to the Na layer is one of interests in the aspect of the atmospheric composition change accompanied with the auroral activity. There are several previous studies in this issue. For example, recently, we have reported an initial result on a clear relationship between the electron density increase (due to the energetic particles) and the Na density decrease from observational data sets obtained by Na lidar, EISCAT VHF radar, and optical instruments at Tromsoe, Norway on 24-25 January 2012. However, all of the previous studies had been carried out based on case studies by ground-based lidar observations. In this study, we have performed, for the first time, statistical analysis using Na density data from 2004 to 2009 obtained with the Optical Spectrograph and InfraRed Imager System (OSIRIS) onboard Odin satellite. In the presentation, we will show relationship between the Na density and geomagnetic activities, and its latitudinal variation. Based on these results, the Na layer response to the energetic particles will be discussed.

  20. The role of Na/+/ in transport processes of bacterial membranes

    Science.gov (United States)

    Lanyi, J. K.

    1979-01-01

    Until recently it was generally held that transport in bacteria was linked exclusively to proton circulation, in contrast to most eucaryotic systems, which depended on Na(+) circulation. The present review is intended to trace recent developments which have led to the discarding of this idea. The discussion covers transport of Na(+) and other cations, effects of Na(+) and Na(+) gradients on metabolite transport, properties of Na(+)-dependent transport carriers, and evolutionary considerations of Na(+) transport. It is now apparent that the transport of Na(+) is an important part of energy metabolism in bacteria, and that Na(+) gradients as well as H(+) gradients are used in these systems for the conservation and transmission of energy. Two hypotheses are proposed to explain the evolution of Na/K systems, and it is presently difficult to decide between them.

  1. Vpliv neprimerne toplotne obdelave po varjenju na trdoto TVP jekla odpornega na lezenje

    OpenAIRE

    Senovršnik, Klemen

    2015-01-01

    Glavni cilj diplomske naloge je bilo preučiti vpliv nezadostne in previsoke toplotne obdelave TVP na trdoto za jekla za povišane temperature. Najprej so predstavljena sodobna jekla za povišane temperature ter toplotna obdelava vzorcev s simulirano mikrostrukturo. V nadaljevanju smo izdelali vzorce TVP na simulatorju termičnega cikla Smitweld in izvedli toplotno obdelavo na temperaturi, višji in nižji od priporočene (760°C). Sledila je še analiza mikrostrukture in meritev trdote TVP. Prikazali...

  2. INTOLERANCIJA NA HISTAMIN – KOJE SU MOGUĆE POSLJEDICE NA KOŽI?

    OpenAIRE

    Lugović-Mihić, Liborija; ŠEŠERKO, ANA; DUVANČIĆ, TOMISLAV; Šitum, Mirna; Mihić, Josip

    2013-01-01

    Iako se intolerancija na histamin (Histamine Intolerance, HIT) ne javlja često, posljedice mogu biti teške. Intolerancija na hranu je nealergijska preosjetljivost na hranu koja ne uključuje imunološki sustav iako su simptomi slični onima kod alergijskih reakcija posredovanih IgE-om. Čini se da HIT nastaje oštećenjem aktivnosti diaminoksidaze (DAO) zbog gastrointestinalnih bolesti ili inhibicijom DAO, a u dijelu bolesnika dokazana je i genetska predispozicija. Unos hrane bogate histaminom te a...

  3. VPLIV KULTURE NA MEDNARODNO POSLOVANJE NA PRIMERU JAPONSKE, BRAZILIJE IN RUSIJE

    OpenAIRE

    Radej, Helena

    2011-01-01

    Kultura ima močan vpliv na mednarodno poslovanje, ima vedno večji vpliv na medkulturna pogajanja in velja za spremenljivko, ki ne sme biti zanemarjena. Kultura je celota, ki vključuje znanje, prepričanja, vrednote, moralo, zakone, običaje in je način skupnega življenja vsakega naroda. Poznavanje kulture je ključ, brez katerega podjetniki ne morejo odklepati vrat v mednarodno poslovnem okolju. V diplomski nalogi smo opredelili pojem kulture in predstavili njene značilnosti in sestavine. Op...

  4. Low temperature light yield measurements in NaI and NaI(Tl)

    CERN Document Server

    Sailer, C; Strandhagen, C; Jochum, J

    2012-01-01

    The scintillation light output of a pure and a Thallium doped Sodium Iodide (NaI) crystal under irradiation with 5.486MeV \\alpha -particles has been measured over a temperature range from 1.7K to 300K. Estimates of the decay time constant at three selected temperatures are given. For pure NaI an increase in light yield towards low temperatures could be confirmed and measured at higher precision. For NaI(Tl) below 60K an increase in light output has been found.

  5. TRGOVANJE Z VREDNOSTNIMI PAPIRJI NA PODLAGI TEHNIČNE ANALIZE - NA PRIMERU SOLARNEGA SEKTORJA

    OpenAIRE

    Repolusk, Miha

    2012-01-01

    Diplomsko delo je sestavljeno iz teoretičnega in praktičnega dela. V uvodu je opredeljeno področje, ki je predmet raziskave, namen in cilji ter osnovne trditve ter predpostavke. V poglavju 2 smo se predvsem osredotočili na zgodovino in nastanek tehnične analize, prav tako smo izpostavili prednosti le te. Pomembne so tri predpostavke na katerih temelji tehnična analiza: prva predpostavka je, da tečaj vrednostnega papirja v vsakem trenutku odseva vse potencialne vplive nanj. Druga predpo...

  6. VPLIV AVTOMOBILSKE INDUSTRIJE NA DRUŽBENOGOSPODARSKE SPREMEMBE NA ČEŠKEM IN V SLOVENIJI

    OpenAIRE

    Bogovič, Amadej

    2016-01-01

    Potreba po mobilnosti in učinkovitem prevoznem sredstvu je privedla do izuma avtomobila ter posledično do nastanka in razvoja avtomobilske industrije. Ta velja danes v številnih evropskih državah za eno izmed ključnih gospodarskih panog, ki ima številne družbene in gospodarske posledice v okolju, v katerem deluje. Magistrsko delo se osredotoča na vpliv avtomobilske industrije na družbenogospodarske spremembe na Češkem in v Sloveniji. Zaradi lažjega razumevanja celotnega poteka naloge ...

  7. Fitoterápicos na odontologia: estudo etnobotânico na cidade de Manaus

    OpenAIRE

    S. S. Evangelista; F.C. Sampaio; R. C. Parente; M. F. C. L. Bandeira

    2013-01-01

    O reconhecimento oficial da fitoterapia na odontologia no Brasil veio acompanhado de diversas lacunas na pesquisa científica e na utilização de plantas medicinais, especificamente para espécies vegetais com aplicação nas doenças da cavidade oral. O estado do Amazonas, especificamente a cidade de Manaus, não possui um diagnóstico da aplicabilidade de plantas medicinais nos serviços de atenção Odontológica. Esse estudo propôs realizar um estudo do tipo quali-quantitativo, descritivo e explorató...

  8. Substitutional NaCl hydration in ice

    Science.gov (United States)

    Feibelman, Peter J.

    2007-06-01

    Na+ and Cl- can replace water molecules in ice Ih with minimal lattice strain and without disrupting the crystal’s H-bond network. First-principles calculations show that substitutional solvation is endothermic by as little as 0.49eV per ion pair. Interstitial ion solvation is less favorable by >1.5eV .

  9. The origin of the Na-Dene

    OpenAIRE

    Ruhlen, Merritt

    1998-01-01

    Linguistic evidence indicates that the Yeniseian family of languages, spoken in central Siberia, is most closely related to the Na-Dene family of languages spoken, for the most part, in northwestern North America. This hypothesis locates the source of one of the three migrations responsible for the peopling of the Americas.

  10. Os embrechados na arte portuguesa dos jardins

    OpenAIRE

    Albergaria, Isabel Soares de

    1997-01-01

    Do francês "brèche" que significa fissura, fenda, ruína ou sulco, a palavra embrechado não tem equivalência noutras línguas, definindo igualmente um tipo decorativo muito usual e, de certa forma, único nos jardins portugueses a partir do século XVII. [...

  11. Using namespace GiNaC

    International Nuclear Information System (INIS)

    Some of the experiences gained while designing, implementing and actually using the GiNaC system for symbolic computation in C++ are outlined. Difficulties and pitfalls for users migrating from Form are contrasted and some of the benefits and liabilities are sketched shortly. (author)

  12. NA48: Wiring up for Change

    CERN Multimedia

    2001-01-01

    The NA48 Collaboration is rebuilding its drift chambers ready for the experiment to start up again this coming July. An intricate task involving the soldering of over 24,000 wires! The future of the NA48 experiment is coming right down to the wire, that is, the wires which the Collaboration is installing in the clean room of Hall 887 on the Prévessin site. Six days a week, technicians are working in shifts to rebuild the experiment's drift chambers. The original chambers were damaged when a section of a vacuum tube imploded at the end of 1999. A year ago, CERN gave the green light for this essential part of the spectrometer to be rebuilt, so the NA48 experiment, which studies CP violation (see box), still has a bright future ahead of it. Three years of data-taking ahead The NA48 experiment aims to penetrate the secrets of CP (Charge Parity) violation. Charge and parity are two parameters which distinguish a particle from an antiparticle. In other words, an electron possesses a negative electric ...

  13. NA49: lead-lead collision

    CERN Multimedia

    1996-01-01

    This is an image of an actual lead ion collision taken from tracking detectors on the NA49 experiment, part of the heavy ion project at CERN. These collisions produce a very complicated array of hadrons as the heavy ions break up. It is hoped that one of these collisions will eventually create a new state of matter known as quark-gluon plasma.

  14. Stabilita nebo změna?

    Czech Academy of Sciences Publication Activity Database

    Hřebíčková, Martina

    Bratislava: Ústav experimentálnej psychologie SAV, 2003, s. -. ISBN 80-88910-12-9. [Kultivácia integrovanej osobnosti na prahu 21. storočia. Bratislava (SK), 25.06.2003] Institutional research plan: CEZ:AV0Z7025918 Keywords : personality development * personality traits * stability of personality traits Subject RIV: AN - Psychology

  15. FINSKI OBRAZOVNI SUSTAV. Refleksija na studijsku posjetu

    OpenAIRE

    Damjanović, Radojko

    2011-01-01

    Refleksija studijske posjete Finskoj pokušava predočiti čitatelju način funkcioniranja tamošnjeg obrazovnog sustava – organizacije, financiranja, povezanosti različitih razina vlasti, oblika decentralizacije, odnose između relevantnih društvenih aktera, odnose unutar samog sustava, života škole.

  16. IZOBRAŽEVANJE NA DOMU - ŠTUDIJA PRIMERA

    OpenAIRE

    Križan, Urška

    2014-01-01

    V teoretičnem delu se skozi literaturo seznanjamo z zakoni, ki na območju Republike Slovenije urejajo izobraževanje na domu, pa tudi s smernicami, ki veljajo na področju organiziranosti takega pouka. Po enem tednu, ki smo ga preživeli na domačiji skupaj s tremi šoloobveznimi otroki, ki se šolajo na domu, ugotavljamo, da je izvajanje izobraževanja na domu zmeraj v skladu z zakoni in pogosto v skladu s smernicami.

  17. VPLIV BARVE EMBALAŽE NA ZAZNAVANJE OKUSA GOSTEGA SOKA

    OpenAIRE

    Prevolšek, Daša

    2016-01-01

    Z barvami se srečujemo na vsakem koraku. Mogoče se njihovega vpliva ne zavedamo povsem, vendar nam lahko že pogled na določeno barvo dvigne ali pokvari razpoloženje. Barve imajo zelo velik vpliv na človeka in v nas prebujajo različna čustva. Nekatere barve so pozitivne in nas osrečujejo, druge pa na nas delujejo negativno. Ravno zaradi tega je tudi za oblikovalce embalaže zelo pomembno, da vnaprej predvidijo, kako se bodo potencialni porabniki njihovega izdelka odzivali na njihovo embalažo. P...

  18. Nove vrste - marikultura na istočnom Jadranu

    OpenAIRE

    Starešinić, Nick; Vidal, Erica A. G.; Walsh, Leigh S.

    2004-01-01

    Radi povećane produkcije lubina i komarče na Mediteranu, u posljednjih deset godina njihova je cijena znatno pala. Smanjeni prihodi prisilili su mnoge proizvođače da napuste ovaj posao, a ulazak novih proizvođača na tržište postaje sve teži. Ova činjenica mora se uzeti u obzir pri izradi razvojnog plana koji se zasniva na produkciji starih vrsta u uzgoju, bilo to na nacionalnoj razini ili na razini poduzetništva. Mogući odgovor na ovu problematiku je unos novih vrsta u uzgoj. Neke ribe i b...

  19. Vpliv telesne aktivnosti na optimalno urejen krvni tlak mladostnika

    OpenAIRE

    Šiško, Tanja

    2013-01-01

    Teoretična izhodišča. Telesna aktivnost ima številne ugodne učinke na naše telo in je v kombinaciji s pravilnim, zdravim načinom prehranjevanja in zdravim načinom življenja prav gotovo naložba, ki se nam obrestuje. V svetu in tudi v Sloveniji je število prekomerno prehranjenih mladostnikov in otrok v porastu, debelost pa je eden od dejavnikov tveganja za razvoj arterijske hipertenzije ter bolezni srca in ožilja, na katerega imamo vpliv in seveda lahko preprečimo, da bi se sploh razvila. ...

  20. STRES I ZLOSTAVLJANJE NA RADU U HRVATSKOJ LEGISLATIVI

    OpenAIRE

    Đukanović, Ljubica

    2009-01-01

    SAŽETAK: Ovaj članak obrađuje problematiku stresa i zlostavljanja na radu s podacima istraživanja ovog fenomena koje je provedeno tijekom 2000. godine u članicama Europske unije. Istraživanje je bilo osnova za donošenje Okvirnog sporazuma koji se odnosi na stres prouzročen na radnom mjestu. Stresu i zlostavljanju na radu dana je posebna pozornost koje definiraju osnovna načela Zakona o radu kojima se zabranjuje diskriminacija na području radnih odnosa u Republici Hrvatskoj. Iz iznesenih konst...

  1. Distribuirana analiza zapisa na oblaku primjenom MapReduce

    OpenAIRE

    Aydin, Galip; Hallac, Ibrahim R.

    2016-01-01

    U ovom članku opisujemo naš rad na projektiranju na mreži zasnovanog sustava analize distribuiranih podataka koji se zasniva na popularnom MapReduce okviru postavljenom na malom oblaku i razvijenom specijalno za analizu zapisa web poslužnika. Sustav analize zapisa sastoji se od nekoliko čvorova klastera, dijeli velike datoteke zapisa na distribuirani sustav datoteke i brzo ih obrađuje primjenom MapReduce modela programiranja. Klaster se stvara primjenom open source infrastrukture oblaka, čime...

  2. Biossegurança na odontologia

    Directory of Open Access Journals (Sweden)

    André Luiz Dantas Bezerra

    2014-04-01

    Full Text Available Introdução: As atividades laborais, de modo geral, expõem os trabalhadores a riscos ocupacionais dos mais variados. Esses riscos incluem agentes físicos, químicos, ergonômicos, de acidentes e biológicos. O contato rotineiro com esses últimos deve ser motivo de reflexão e intervenção. Objetivo: Descrever os aspectos da biossegurança na odontologia. Métodos: Foi realizada uma revisão do estado da arte, adotando-se critérios para análise dos trabalhos mais diretamente relacionados à prática odontológica. A partir dos descritores controlados (DeCS "biossegurança" e "odontologia", procederam-se a busca na Literatura Latino-Americana e do Caribe em Ciências da Saúde, na Scientific Electronic Library Online, na National Library of Medicine e na Biblioteca Cochrane. Resultados: Com a associação entre os DeCS, chegou-se a 66 artigos, porém, após refinamento foram incluídos nesta revisão 12 artigos. Nos resultados foi evidenciado que a produção científica sobre biossegurança é vasta, bem como é ampla na odontologia, contudo, quando da concentração de trabalhos contempladores da associação dos termos biossegurança e odontologia, a quantidade de estudos diminui consideravelmente. Não obstante, as pesquisas foram, em sua maioria, desenvolvidas por estudiosos nacionais, da região nordeste e evidenciaram que o conhecimento e a adoção de medidas de segurança biológica na área ainda são insuficientes para garantir a proteção da equipe e dos pacientes qualitativamente. Conclusão: Sugere-se que as normas de precaução padrão sejam seguidas rigidamente e que ações de educação sejam promovidas entre os profissionais.

  3. The solubility of Cr(OH)3(am) in concentrated NaOH and NaOH-NaNO3 solutions

    International Nuclear Information System (INIS)

    Chromium is a major component of the Hanford waste tank sludges, and the presence of Cr in the sludges is a significant concern in the disposal of these sludges because Cr can interfere with the formation of waste glasses. One of the current pretreatment strategies for removing constituents that can interfere with glass formation, such as P and Cr, is to wash/dissolve the sludges in basic NaOH solutions. The solubility of Cr(OH)3(am) was measured in concentrated NaOH ranging in concentration from 0.1M to 6.0M and in NaOH-NaNO3 solutions with fixed NaOH concentration and variable NaNO3 concentration at room temperature (22--23 C). Equilibrium between solids and solutions was approached relatively slowly and required approximately 60--70 days before steady-state concentrations were reached. A thermodynamic model, based upon the Pitzer equations, was developed from the solubility data in NaOH, which includes only two aqueous Cr species (Cr(OH)4- and NaCr(OH)4(aq)) and ion-interaction parameters for Na+ with Cr(OH)4-. This model was then tested in the mixed NaOH-NaNO3 solutions and found to be reliable

  4. Laser trapping of 21Na atoms

    International Nuclear Information System (INIS)

    This thesis describes an experiment in which about four thousand radioactive 21Na (tl/2 = 22 sec) atoms were trapped in a magneto-optical trap with laser beams. Trapped 21Na atoms can be used as a beta source in a precision measurement of the beta-asymmetry parameter of the decay of 21Na → 21Ne + Β+ + ve, which is a promising way to search for an anomalous right-handed current coupling in charged weak interactions. Although the number o trapped atoms that we have achieved is still about two orders of magnitude lower than what is needed to conduct a measurement of the beta-asymmetry parameter at 1% of precision level, the result of this experiment proved the feasibility of trapping short-lived radioactive atoms. In this experiment, 21Na atoms were produced by bombarding 24Mg with protons of 25 MeV at the 88 in. Cyclotron of Lawrence Berkeley Laboratory. A few recently developed techniques of laser manipulation of neutral atoms were applied in this experiment. The 21Na atoms emerging from a heated oven were first transversely cooled. As a result, the on-axis atomic beam intensity was increased by a factor of 16. The atoms in the beam were then slowed down from thermal speed by applying Zeeman-tuned slowing technique, and subsequently loaded into a magneto-optical trap at the end of the slowing path. The last two chapters of this thesis present two studies on the magneto-optical trap of sodium atoms. In particular, the mechanisms of magneto-optical traps at various laser frequencies and the collisional loss mechanisms of these traps were examined

  5. $^{24}$Mg($p$, $\\alpha$)$^{21}$Na reaction study for spectroscopy of $^{21}$Na

    CERN Document Server

    Cha, S M; Kim, A; Lee, E J; Ahn, S; Bardayan, D W; Chipps, K A; Cizewski, J A; Howard, M E; Manning, B; O'Malley, P D; Ratkiewicz, A; Strauss, S; Kozub, R L; Matos, M; Pain, S D; Pittman, S T; Smith, M S; Peters, W A

    2015-01-01

    The $^{24}$Mg($p$, $\\alpha$)$^{21}$Na reaction was measured at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory in order to better constrain spins and parities of energy levels in $^{21}$Na for the astrophysically important $^{17}$F($\\alpha, p$)$^{20}$Ne reaction rate calculation. 31 MeV proton beams from the 25-MV tandem accelerator and enriched $^{24}$Mg solid targets were used. Recoiling $^{4}$He particles from the $^{24}$Mg($p$, $\\alpha$)$^{21}$Na reaction were detected by a highly segmented silicon detector array which measured the yields of $^{4}$He particles over a range of angles simultaneously. A new level at 6661 $\\pm$ 5 keV was observed in the present work. The extracted angular distributions for the first four levels of $^{21}$Na and Distorted Wave Born Approximation (DWBA) calculations were compared to verify and extract angular momentum transfer.

  6. Na/beta-alumina/NaAlCl4, Cl2/C circulating cell

    Science.gov (United States)

    Cherng, Jing-Yih; Bennion, Douglas N.

    1987-01-01

    A study was made of a high specific energy battery based on a sodium negative electrode and a chlorine positive electrode with molten AlCl3-NaCl electrolyte and a solid beta alumina separator. The basic performance of a Na beta-alumina NaAlCl4, Cl2/C circulating cell at 200 C was demonstrated. This cell can be started at 150 C. The use of melting sodium chloroaluminate electrolyte overcomes some of the material problems associated with the high working temperatures of present molten salt systems, such as Na/S and LiAl/FeS, and retains the advantages of high energy density and relatively efficient electrode processes. Preliminary investigations were conducted on a sodium-chlorine static cell, material compability, electrode design, wetting, and theoretical calculations to assure a better chance of success before assembling a Na/Cl2 circulating cell. Mathematical models provide a theoretical explanation for the performance of the NaCl2 battery. The results of mathematical models match the experimental results very well. According to the result of the mathematical modeling, an output at 180 mA/sq cm and 3.2 V can be obtained with optimized cell design.

  7. A study on equilibria in the quaternary system Na2 B4 O7-Na2 SO4-NaCl-H2 O at 288 K%Na2B4O7-Na2SO4-NaCl-H2O四元体系288K相平衡研究

    Institute of Scientific and Technical Information of China (English)

    桑世华; 赵相颇; 钟丝摇; 张俊杰

    2013-01-01

    Solubilities and densities of solution in the quaternary system NaCl-Na2 SO4-Na2 B4 O7-H2 O at 288 K were studied by iso-thermal equilibrium method.Based on the solubility data ,the phase diagram of the quaternary system was plotted ,which consists of three univariant curves,one invariant point and three crystallization fields corresponding to NaCl ,Na2B4O7· 10H2O and Na2SO4· 10H2O.The experimental results show that sodium chloride (NaCl)had the salting-out effect on sodium borate(Na2B4O7)and sodi-um sulphate(Na2SO4).%  采用等温溶解平衡法研究了四元体系Na2 B4 O7-Na2 SO4-NaCl-H2 O 在288 K的相平衡关系,测定了平衡液相的溶解度及其密度。由研究结果知该四元体系为简单共饱和型,无复盐及固溶体形成。根据实验数据绘制了相应的相图。相图中有一个共饱点,三条单变曲线,三个结晶区平衡固相分别为:Na2 B4 O7·10H2 O, Na2 SO4·10H2 O和NaCl。实验结果表明NaCl对Na2 B4 O7和Na2 SO4有盐析作用,并简要讨论了实验结果。

  8. IZOBRAŽEVANJE SVETOVALCEV ZAPOSLITVE NA ZAVODU RS ZA ZAPOSLOVANJE

    OpenAIRE

    Kozamernik, Neva

    2010-01-01

    Diplomsko delo obravnava vlogo in pomen izobraževanja svetovalcev zaposlitve na Zavodu RS za zaposlovanje na Območni enoti Ljubljana v povezavi s svetovanjem in pomočjo brezposelnim osebam. Kajti spremembe zunanjega okolja

  9. Transport of Na48 Drift Chambers to Dubna

    CERN Multimedia

    GOLOVATYUK, V

    2010-01-01

    On 22 July, in the occasion of the departure of the Na48 Drift Chambers from CERN, Mikhail Itkis (acting Director of the JIINR) and Rolf Heuer (CERN Director General) visited the NA62 experimental area.

  10. Hidroginástica na terceira idade

    Directory of Open Access Journals (Sweden)

    Karla Campos de Paula

    1998-02-01

    Full Text Available O processo de envelhecimento no indivíduo saudável está relacionado com inúmeras alterações psicológicas e físicas que interferem na área motora, concorrendo para a inatividade e contribuindo para o aparecimento e agravamento de determinadas doenças, além de influenciar negativamente a realização das atividades de vida diária. Portanto, a prática de atividade física é fundamental para o idoso, não só na prevenção de doenças como na reabilitação de suas habilidades motoras, promovendo um estilo de vida saudável que é fator preponderante para a melhoria da qualidade de vida. Contudo, algumas precauções devem ser adotadas na prescrição da atividade direcionada para o idoso, a fim de que esta seja segura e prazerosa. Dentre os exercícios mais adequados aos idosos estão a caminhada, o ciclismo, a natação e a hidroginástica. Devido a sua grande procura, a hidroginástica vem aumentando o número de adeptos na terceira idade. Ela propicia ao idoso o aumento de sua capacidade aeróbia, força muscular, flexibilidade articular e o treinamento de habilidades específicas como equilíbrio e coordenação motora. Soma-se ainda o fato de esta atividade oferecer ambiente de relaxamento e incentivo ao contato social, atuando no combate ao estresse, depressão, na melhoria da autopercepção corporal e da auto-estima. Devemos, então, estar atentos às particularidades da hidroginástica, a fim de aproveitar todas as vantagens que esta oferece para o programa de exercícios direcionado para a terceira idade.

  11. Na2CO3和NaHCO3胁迫对菊苣种子萌发的影响%Effects of Na2CO3 and NaHCO3 Stress on Seed Germination of Chicory

    Institute of Scientific and Technical Information of China (English)

    郭丹丹

    2013-01-01

    [目的]为研究Na2CO3和NaHCO3等碱性盐对植物的胁迫伤害提供依据.[方法]用不同浓度的Na2CO3和NaHCO3溶液处理菊苣种子,并对其发芽率、发芽势、根长、苗长和鲜重等生理指标进行研究.[结果]低浓度Na2CO3和NaHCO3对萌发后菊苣的苗长、根长和鲜重有一定的促进作用,但对根苗比的影响表现为抑制.[结论]低浓度Na2CO3和NaHCO3对种子萌发有增效效应.%[Objective] The research aimed to provide the basis for the study of the damage of the stress of basic salt such as Na2CO3 and NaHCO3 on the plants.[Method] Chicory seeds were treated with Na2CO3 and NaHCO3 solution of different concentration.The physiological indicators such as germination rate,germination potential,root length,seedling length and fresh weight were studied.[Result] A low concentration of Na2CO3 and NaHCO3 could promote germination rate,germination potential,then promote seedling length,root length and fresh weight after germination.However,it showed the performance for suppression on the ratio of root and shoot.[Conclusion] A low concentration of Na2CO3 and NaHCO3 had synergistic effect on chicory seed germination rate and germination potential.

  12. ODGOVORNO ORGANIZACIJSKO PONAŠANJE: PROVJERA KONSTRUKTA NA HRVATSKOM UZORKU

    OpenAIRE

    Penezić, Zvjezdan; Rak, Ivana; Slišković, Ana

    2013-01-01

    Osnovni cilj ovog istraživanja bila je provjera konstrukta odgovornoga organizacijskog ponašanja na hrvatskom uzorku ispitanika. Ispitivanje je provedeno metodom ankete na 195 zaposlenika u bankama. Rezultati su potvrdili postojanje pet dimenzija konstrukta: altruizam, savjesnost, građanske vrline, uljudnost i fer ponašanje te upozorili na razlike u pojedinim dimenzijama konstrukta s obzirom na sociodemografske osobine. Ispitanici jedino dimenziju altruizma doživljavaju p...

  13. RAZVOJ INTELIGENTNEGA OKOLJA ZA PAMETNI DOM NA PLATFORMI ARM

    OpenAIRE

    Pogorevc, Simon

    2013-01-01

    Magistrska naloga najprej poda pregled sistemov za inteligentni dom, kot jih dandanes že poznamo. V nadaljevanju podajamo zasnovo inteligentnega okolja za pametni dom na ARM platformi. Sledi še razvoj sistema inteligentnega okolja na strojni platformi z ARM procesorjem. Za platformo smo izbrali procesor LPC1768 in razvili vse potrebne vhodno-izhodne module. Pri razvoju smo uporabili programski paket Altium Designer za načrtovanje strojne platforme in tudi za samo načrtovanje vezja. Za razvoj ...

  14. Void Formation in Heavily Irradiated NaCl

    NARCIS (Netherlands)

    Vainshtein, D.I.; Dubinko, V.I.; Turkin, A.A.; Hartog, H.W. den

    1999-01-01

    Experimental and the oretical results are presented on the formation of voids discovered recently in havily irradiated NaCl. Experimental data show that for NaCl samples with particular dopants, the development of radiation damage, such as Na-colloids, chlorine inclusions and voids does not show a s

  15. UREDITEV SPOLNEGA NADLEGOVANJA NA DELOVNEM MESTU V REPUBLIKI SLOVENIJI

    OpenAIRE

    Golavšek, Nastja

    2009-01-01

    V diplomski nalogi je predstavljena problematika spolnega nadlegovanja na delovnem mestu. Spolno nadlegovanje je nezaželeno ravnanje spolne narave ali drugo ravnanje, temelječe na spolu, ki ogroža dostojanstvo žensk in moških na delovnem mestu

  16. Explosive phenomena in heavily irradiated NaCl

    NARCIS (Netherlands)

    denHartog, HW; Vainshtein, DI; Matthews, GE; Williams, RT

    1997-01-01

    In heavily irradiated NaCl crystals explosive phenomena can be initiated during irradiation or afterwards when samples are heated to temperatures between 100 and 250 degrees C. During irradiation of NaCl Na and Cl-2 precipitates and void structures are produced along with the accumulation of stored

  17. Culturas empresarias na África Lusófona

    OpenAIRE

    Jesuíno, Jorge Correia; Reis, Elizabeth

    1996-01-01

    Análise do papel dos empresários nacionais na transição para a economia de mercado na África Lusófona, tendo por base o problema das "culturas empresariais". Caracterização das "culturas empresariais" emergentes na África Lusófona.

  18. Pishanite i vizuelnite izvori za tradicionalnite igra za krajot na XlX i pochetokot na XX vek

    OpenAIRE

    Janevski, Vladimir

    2011-01-01

    Najranite podatoci vo literaturata koi se odnesuvaat direktno na tradicionalnoto igranje, formata, oblikot, stilot i repertoarot, poteknuvaat od krajot na XlX i pochetokot XX vek. Naporedno so literaturnite izvori se pojavuvaat i prvite vizuelni izvori vo Makedonija

  19. Stress of Cl- is Stronger than That of Na+ on Glycine max Seedlings Under NaCl Stress

    Institute of Scientific and Technical Information of China (English)

    LUO Qing-yun; YU Bing-jun; LIU You-liang

    2002-01-01

    Seedlings of six Glycine max cultivars were used to compare Cl- with Na+ in stress effects onsoybean seedlings under NaCl stress. Results showed that stress of NaCl on G. max seedlings was mainlycaused by Cl- and not by Na+. After treatment with isoosmotic solutions of Cl- (without Na+ ) and Na+ (with-out Cl-) respectively, fresh weight and height of G. max seedlings growing in solution of Cl- were much morestressed than those in solution of Na+. And the roots and leaves electrolyte leakage were much more increasedunder stress of Cl- than those under stress of Na+. Salt tolerance of G. max seedlings was mainly contributedto Cl- withheld in roots of seedlings to decrease its content in leaves.

  20. Luzes portuguesas na caverna do patriarcado brasileiro

    Directory of Open Access Journals (Sweden)

    Constância Lima Duarte

    2013-09-01

    Full Text Available Novas cartas portuguesas revelou literariamente as diversas formas de opressão a que as mulheres estavam submetidas através dos séculos, pela distorcida mística imposta pelo patriarcalismo – verdadeira caverna que cerceava o pensamento das mulheres e seu lugar na sociedade. A publicação do livro das três marias contribuiu para a formação de um senso crítico, ampliou a consciência feminista, e propiciou o surgimento de uma literatura engajada também entre nós. O texto pretende refletir sobre a repercussão da publicação da obra na mídia impressa e entre as feministas brasileiras.

  1. Utjecaj sorte jabuke na kvalitetu suhog proizvoda

    OpenAIRE

    Dobričević, Nadica; Voća, Sandra; Pliestić, Stjepan; Magdić, D.

    2008-01-01

    Sorte jabuka Gloster, Jonagold, Idared, Melrose i Mutsu s pro-izvodnog područja sjeverozapadne Hrvatske ubrane su u tehnološkoj zriobi i skladištene u rashladnom prostoru na prosječnoj temperaturi od 2,0 oC i relativnoj vlazi zraka od 98% do užitne dospjelosti. Plodovi jabuka namijenjeni za sušenje očišćeni su i rezani na kockice veličine 1x1x1 cm. Količina mesa u analiziranim sortama je 63,37-75,46 %, količina kožica je 9,11-12,85 %, količina sjemene lože je 10,82-20,34 % i količina neupo...

  2. O ESTIGMA "DE MENOR" NA IMPRENSA ESCRITA

    OpenAIRE

    Vinicius Neder

    2009-01-01

    A representação dominante de crianças e adolescentes em situação de risco social na mídia contribui para estigmatizá-las. Neste trabalho, busca-se analisar como a repetição do termo “menor de idade” ou simplesmente “menor” favorece esse preconceito, no discurso jornalístico. O deslizamento semântico (do discurso jurídico para as manchetes de jornais) indica que a proteção à infância e juventude desfavorecida é um tema menor na pauta das questões sociais. Ao designar parcela importante da popu...

  3. Slip casting alumina with Na-CMC

    Energy Technology Data Exchange (ETDEWEB)

    Ruys, A.J.; Sorrell, C.C. [Univ. of New South Wales, Sydney, New South Wales (Australia)

    1996-11-01

    Many forming methods are in common use for engineering ceramics. Of these, slip casting is an ideal forming method because of its low cost, simplicity and flexibility, potential for uniform particle packing and suitability to the production of articles of intricate shape. Slip casting nonclay materials, such as alumina, requires the use of both a deflocculant and a binder. There are many commercially available deflocculants and binders that can be tested in alumina casting slips. However, determination of a suitable deflocculant/binder combination and quantification of the optimal additions of the deflocculant/binder pair can be time consuming. Certain deflocculants are capable of acting as binders. One such additive is sodium carboxymethylcellulose (Na-cmc), a cellulose ether. Na-cmc is a powerful binder. It is a member of the carbohydrate binder group--the binder group with the strongest binding power. It is capable of acting as a deflocculant in glazes and nonclay casting slips.

  4. O Personal Trainer na Perspectiva do Marketing

    Directory of Open Access Journals (Sweden)

    Cibele Biehl Bossle

    2011-03-01

    Full Text Available Esse estudo apresenta mapeamento das referências dedicadas à formação do personal trainer em bases de dados eletrônicas. Essa garimpagem revelou baixa produção científica sobre o assunto e mostrou que na literatura sobre personal trainer predominam livros com linguagem corrente no mundo dos negócios. Esses achados nos levaram a indagar sobre a força do discurso físico-empresarial, especialmente o marketing, na constituição desta ocupação profissional. Jeremy Rifkin, Zygmunt Bauman, Paula Sibilia e Denise Sant'Anna permitiram visualizar que o marketing dirigido ao personal trainer tem como tarefa reinventar, ressignificar e "repaginar" esta modalidade de serviço em nome da sobrevivência no disputado mercado da vida ativa.

  5. KONGENITALNA CISTIČNA ADENOMATOIDNA MALFORMACIJA

    OpenAIRE

    VLADAREANU, Radu; Pelinescu-Onciul, Dimitrie; Zvânca, Mona; Mihalescu, Doina

    2007-01-01

    Cistična adenomatoidna malformacija pluća (CACM) je rijetka bolest s pojavnošću od 1/25 000 do 1/35 000 trudnoća, razvojna pogrješka koja nastaje preraštanjem terminalnih respiratornih mjehurića. Prenatalna dijagnoza se zasniva na ultrazvučnom prikazu hiperehogenog tumora pluća, koji može biti mikrocističan i makrocističan. Pri bolesti može nastati pomak medijastinuma, fetalni hidrops ili polihidramnios. Ishod je loš u bilateralnim slučajevima, u onima s hipolazijom pluća i fetalnim hidropsom...

  6. Jogos teatrais na escola pública

    Directory of Open Access Journals (Sweden)

    Ricardo Ottoni Vaz Japiassu

    1998-07-01

    Full Text Available O artigo apresenta os resultados parciais de pesquisa etnográfica que acompanha aspectos do desenvolvimento cultural de pré-adolescentes com a linguagem teatral em classe multisseriada, através do ensino regular de Teatro, em escola de ensino fundamental da rede pública estadual de São Paulo-SP. Os dados obtidos permitem afirmar que a linguagem cênica contribui na conscientização das novas possibilidades de significação da palavra na prática discursiva.The article shows partial results of ethnographic research in which kids are observed in their cultural development process with theater classes in public school education in São Paulo/Brazil. The data colected indicates that the use of theater games in school education helps students to be aware of a word’s new meaning possibilities in human comunication.

  7. Stres na delovnem mestu varnostnika : magistrsko delo

    OpenAIRE

    Resnik, Anja

    2012-01-01

    V današnjem času skoraj ni delovnega mesta, ki ne bi zahteval dobre psihične in fizične kondicije zaposlenega. Pri delu se človek srečuje s pritiski in priča-kovanji nadrejenih, na stres vplivajo tudi odnosi s sodelavci, zadovoljstvo z delom, ki ga človek opravlja, delovni pogoji, organizacija dela. Stres povzroča ljudem številne težave, zaradi katerih nastane tudi precejšna škoda za organizacijo in družbo kot celoto. Stresna služba je po vsem svetu daleč najpomembnejši povzročitelj stresa...

  8. NA62 experiment at CERN SPS

    Directory of Open Access Journals (Sweden)

    Kozhuharov Venelin

    2014-01-01

    Full Text Available The NA62 experiment at SPS is a continuation of the long standing CERN kaon physics program. The high statistics and the unprecedent precision allow to probe the Standard Model and test the description of the strong interactions at low energy. The final results on the the lepton universality test by measuring the ratio RK = Γ(K+ → e+ν/Γ(K+ → µ+ν and the study of the K± → π±γγ decay are presented. The major goal of the NA62 experiment is to perform a measurement of the Br(K+ → π+νν̄ with a precision of 10% in two years of data taking. The detector setup together with the analysis technique is described.

  9. Temeljna načela timskog rada

    OpenAIRE

    Nikić, Mijo

    2004-01-01

    U članku su – interdisciplinarnim pristupom – obrađena temeljna načela timskog rada. Analizirane su zapreke i kočnice timskog rada, kompetencije potrebne za uspješno djelovanje radnog tima, motiviranje osoba u timskom radu te glavne oznake uspješnog vođe timskog rada. Doneseni su i savjeti sv. Petra apostola vođama Crkve, koji se mogu primijeniti na vođe bilo kojeg timskog rada. Ideje izložene u ovom članku trebale bi pomoći da više vrednujemo timski rad i postanemo što svjesniji dinamike i p...

  10. UPORABA KODE QR NA MOBILNIH NAPRAVAH

    OpenAIRE

    Taciga, Matej

    2013-01-01

    V diplomski nalogi je opisan je razvoj aplikacije za mobilno napravo na platformi Windows Phone, ki omogoča branje QR kode. Aplikacijo smo razvili v programskem jeziku C#. Zajete in opisane so možnosti uporabe QR kode. Opisano je testiranje obstoječih aplikacij s QR čitalci. Predstavljena sta tudi razvoj in struktura QR kode. S primerom je razloženo kako so podatki zakodirani v kodo.

  11. The NA48 liquid krypton calorimeter

    CERN Document Server

    Gorini, B

    1997-01-01

    The NA48 collaboration goal is to measure the CP violation parameter Re(ɛl/ɛ) at the level of 2 × 10−4. The neutral Kaon decays will be reconstructed by an electromagnetic liquid Krypton calorimeter with fine granularity and a volume almost totally sensible, to obtain excellent position and energy resolution, as well as time resolution. A description of the detector, results from tests of a prototype and the status of the final calorimeter are reported.

  12. SPLETNA TRGOVINA NA PRIMERU PORTALA EBAY

    OpenAIRE

    Babić, Aleksandra

    2012-01-01

    Prilagajanje spremembam v poslovnem okolju je temeljnega pomena za obstoj slehernega podjetja. Sodobno trženje postaja temeljna filozofija vseh sodobnih, tržno usmerjenih podjetij. Z elektronskim poslovanjem so podjetja s pomočjo računalnikov in informatizacije procesov posodobila del ali celotno poslovanje, kot na primer komunikacijo z dobavitelji in odjemalci, skladiščenje, distribucijo, trženje, prodajo in podobno. Vendar je elektronska trgovina le del elektronskega poslovanja podjetja. ...

  13. Latest results from the NA57 experiment

    OpenAIRE

    Bruno, Giuseppe Eugenio

    2005-01-01

    The NA57 experiment at the CERN SPS has measured the production of strange and multi-strange particles in Pb-Pb (and p-Be) collisions at mid-rapidity. The collective dynamics of the collision is studied in the transverse and longitudinal directions as a function of centrality and beam momentum and analysed based on hydrodynamical models. Central-to-peripheral nuclear modification factors at 158 A GeV/c are presented and compared with other measurements and theory.

  14. NA49: lead-lead collisions

    CERN Multimedia

    1996-01-01

    This is an image of an actual lead ion collision taken from tracking detectors on the NA49 experiment, part of the heavy ion project at CERN. These collisions produce a very complicated array of hadrons as the heavy ions break up. It is hoped that one of these collisions will eventually create a new state of matter known as the quark-gluon plasma.

  15. Prepoznavanje osobe u forenzici na temelju glasa

    OpenAIRE

    Kovač, Zlatko

    2012-01-01

    Članak opisuje analizu ljudskog glasa sa svrhom identifikacije osobe po njezinom glasu, odnos-no govoru. Navedene su osnovne značajke govora, načini ispitivanja ljudskog glasa, osnovne komponente glasa kao i računalni alati za obradu glasa. Cilj je članka potaknuti interes za raz-voj vještačenja zvuka u Ministarstvu unutarnjih poslova RH.

  16. Ispitivanje otpornosti na tlak polivinilkloridne kanalizacijske cijevi

    OpenAIRE

    Zagorec, Mijo

    2003-01-01

    U radu je istaknuto da cijevi od polivinilklorida, politilena i polipropilena imaju drugačija mehanička svojstva od krutih tradicionalnih kanalizacijskih cijevi. Opisana su trostruka laboratorijska ispitivanja otpornosti kanalizacijskih cijevi od tvrdog polivinilklorida na tjemeni tlak da se ustanovi koje vertikalno stalno i pokretno opterećenje mogu izdržati te cijevi pri određenom deformiranju i koliko zbijeni materijal uokolo cijevi sudjeluje u preuzimanju toga tlaka.

  17. Acetylene diffusion in Na-Y zeolite

    Indian Academy of Sciences (India)

    S Mitra; S Sumitra; A M Umarji; R Mukhopadhyay; S Yashonath; S L Chaplot

    2004-08-01

    Study of diffusivity of acetylene adsorbed in Na-Y zeolite by quasi-elastic neutron scattering (QENS) measurements at temperatures of 300, 325 and 350 K is reported. A model in which the acetylene molecules undergo random-walk diffusion characterized by a Gaussian distribution of jump lengths inside zeolite cages describes the data consistently. The diffusion constant, residence time between jumps and root mean square jump length are determined.

  18. Prototype calorimeters for the NA3 experiment

    CERN Multimedia

    1975-01-01

    The NA3 Experiment was set-up on the North Area of the SPS by the CERN/ Ecole Polytechnique/College de France/ Orsay/Saclay Collaboration, to study high transverse momentum leptons and hadrons from hadron collisions. The calorimeters measured the energy of hadrons (prototype on the right) and leptons (prototype on the left). They used a new type of plastic scintillator (plexipop). (see CERN Courier of November 1975) energy (prototype on the right)

  19. New results from the NA57 experiment

    CERN Document Server

    Bruno, G; Bacon, P A; Badalà, A; Barbera, R; Belogianni, A; Bhasin, A; Bloodworth, Ian J; Bombara, M; Bruno, G; Bull, S A; Caliandro, R; Campbell, M; Carena, W; Carrer, N; Clarke, R F; Dainese, A; De Haas, A P; De Rijke, P C; Di Bari, D; Di Liberto, S; Divià, R; Elia, D; Evans, D; Fanebust, K; Fayazzadeh, F; Feofilov, G A; Fini, R A; Ganoti, P; Ghidini, B; Grella, G; Helstrup, H; Henriquez, M; Holme, A K; Jacholkowski, A; Jones, G T; Jovanovic, P; Jusko, A; Kamermans, R; Kinson, J B; Knudson, K; Kolojvari, A A; Kondratiev, V; Králik, I; Kravcakova, A; Kuijer, P; Lenti, V; Lietava, R; Løvhøiden, G; Manzari, V; Martinská, G; Mazzoni, M A; Meddi, F; Michalon, A; Morando, M; Nappi, E; Navach, F; Norman, P I; Palmeri, A; Pappalardo, G S; Pastircák, B; Pisút, J; Pisútová, N; Posa, F; Quercigh, Emanuele; Riggi, F; Röhrich, D; Romano, G; Safar, K; Sándor, L; Schillings, E; Segato, G F; Sené, M; Sené, R; Snoeys, W; Soramel, F; Spyropoulou-Stassinaki, M; Staroba, P; Toulina, T A; Turrisi, R; Tveter, T S; Urbán, J; Valiev, F F; Van den Brink, A; Van de Ven, P; Van de Vyvre, P; van Eijndhoven, N; Van Hunen, J J; Vascotto, Alessandro; Vik, T; Villalobos Baillie, O; Vinogradov, L I; Virgili, T; Votruba, M F; Vrláková, J; Závada, P

    2002-01-01

    We report results from the experiment NA57 at CERN SPS on hyperon production at midrapidity in Pb-Pb collisions at 158 $A$ GeV/$c$ and 40 $A$ GeV/$c$. $\\Lambda$, $\\Xi$ and $\\Omega$ yields are compared with those from the STAR experiment at the higher energy of the BNL RHIC. $\\Lambda$, $\\Xi$, $\\Omega$\\ and preliminary $K_S^0$ transverse mass spectra are presented and interpreted within the framework of a hydro-dynamical blast wave model.

  20. Sodobna forenzična fotografija

    OpenAIRE

    Ličar, Mitja

    2016-01-01

    V teoretičnem delu avtor predstavi osnove fotografije. Opredeli osnovne parametre za pravilno eksponiranje fotografije, pojem globinske ostrine, predstavi objektive ter del nameni svetlobi, kontrastu vira svetlobe in svetlobnih odbojev. V nadaljevanju specificira fotografijo v forenzični vlogi. Opredeli situacijski posnetek, posnetek relativne bližine in bližnji posnetek. Osredini se na teorijo fotografiranja krvnih sledov. Predstavi problematične površine nahajanja krvnih sledi, uporabo kemi...

  1. Bestiarium Zofii Nałkowskiej

    OpenAIRE

    Janowska, Magdalena

    2005-01-01

    The thesis deals with motives of animals in Zofia Nałkowska’ s works. The motives which constitute a part of strategy used for the presentation that depicts one of the most ambiguous categories in the 20th century literary analysis. The main animal motives found in Nalkowska’s writings include pictures of fish, horses, butterflies, insects ans Swiss birds called „choucas”. All whose symbols have been discussed in this thesis from the feminist, or generally concerning women perspectiv...

  2. NA35: sulphur-gold collision

    CERN Multimedia

    1991-01-01

    In this image the real particles produced by the collision of a 6400 GeV sulphur ion with a gold target can be seen as they pass through a streamer chamber. Streamer chambers consist of a gas chamber through which a strong pulsed electric field is passed, creating sparks as a charged particle passes through it. The NA35 experiment, which was in operation in the 1980s, was part of CERN's ongoing heavy ion project.

  3. POGLEDI NA TEKMOVALNI SISTEM NOGOMETA V SLOVENIJI

    OpenAIRE

    Pavlović, Igor

    2011-01-01

    Zaradi množičnega udejstvovanja v športni panogi nogomet so potrebna pravila, da se doseže red. Pravila najdemo v pravnih aktih in moj cilj je bil, da ugotovim, kako se ti akti uporabljajo v praksi in kakšen pomen ima tekmovalni sistem. V današnjih časih so na sceni različni nogometaši

  4. VPLIV STATORSKEGA NAVITJA NA KARAKTERISTIKE ASINHRONSKEGA MOTORJA

    OpenAIRE

    Jakopič, Gorazd

    2010-01-01

    Diplomsko delo obravnava vpliv statorskega navitja na karakteristike štiripolnega asinhronskega motorja z višino gredi 112 mm. Z izbranim statorskim paketom so v okviru diplomske naloge izračunane elektromagnetne in mehanske karakteristike za različne vrste statorskih navitij. Uporabljena so koncentrično porazdeljena navitja, in sicer: enoplastna, dvoplastna in kombinirana. Namen je izbrati takšno vrsto statorskega navitja, da bo trifazni asinhronski motor: - potreboval manjšo maso bakra n...

  5. Afasia adquirida na infância

    Directory of Open Access Journals (Sweden)

    Eliana C. Wanderley

    1969-06-01

    Full Text Available São relatados dois casos de afasia em menina de 10 anos e menino de 8 anos, conseqüentes a lesão cerebral por projétil de arma de fogo no primeiro caso e septicemia com tromboflebite no segundo. Nos dois casos a evolução foi bastante favorável e ambos os pacientes apresentaram percepção praticamente normal com distúrbios na expressão oral que assumia várias vezes o tipo de lapso amnéstico. A expressão gráfica nos dois casos foi mais atingida como sonseqüência de estar menos automatizada. O fenômeno da perseveração foi notado na fala no primeiro caso e, na escrita, no seguno. Foi discutida a justificativa do diagnóstico e lembrado o diagnóstico diferencial com outros distúrbios da fala em crianças.

  6. NaI(Tl) response functions

    International Nuclear Information System (INIS)

    The response functions of a NaI(Tl) detector have been estimated using Monte Carlo methods. Response functions were calculated for monoenergetic photon sources (0.05 to 3 MeV). Responses were calculated for point-like sources and for sources distributed in Portland cement cylinders. The responses were used to calculate the efficiency functions in term of photon energy. Commonly, sources used for calibration are point-like, and eventually sources to be measured have different features. In order to use the calibrated sources corrections due to solid angle, self-absorption and scattering, must be carried out. However, some of these corrections are not easy to perform. In this work, the calculated responses were used to estimate the detector efficiency of point-like sources, and sources distributed in Portland type cement. Samples of Portland paste were prepared and were exposed to photoneutrons produced by a 15 MV linac. Some of the elements in the cement were activated producing γ-emitting radionuclides that were measured with a NaI(Tl) gamma-ray spectrometer, that was calibrated with point-like sources. In order to determine the specific activity in the induced radioisotopes calculated efficiencies were used to make corrections due to the differences between the solid angle, photon absorption and photon scattering in the point-like calibration sources and the sources distributed in cement. During the interaction between photoneutrons and the cement samples three radioisotopes were induced: 56Mn, 24Na, and 28Al. (Author)

  7. TRP-Na(+)/Ca(2+) Exchanger Coupling.

    Science.gov (United States)

    Harper, Alan G S; Sage, Stewart O

    2016-01-01

    Na(+)/Ca(2+) exchangers (NCXs) have traditionally been viewed principally as a means of Ca(2+) removal from non-excitable cells. However there has recently been increasing interest in the operation of NCXs in reverse mode acting as a means of eliciting Ca(2+) entry into these cells. Reverse mode exchange requires a significant change in the normal resting transmembrane ion gradients and membrane potential, which has been suggested to occur principally via the coupling of NCXs to localised Na(+) entry through non-selective cation channels such as canonical transient receptor potential (TRPC) channels. Here we review evidence for functional or physical coupling of NCXs to non-selective cation channels, and how this affects NCX activity in non-excitable cells. In particular we focus on the potential role of nanojunctions, where the close apposition of plasma and intracellular membranes may help create the conditions needed for the generation of localised rises in Na(+) concentration that would be required to trigger reverse mode exchange. PMID:27161225

  8. Parní kotel na biomasu

    OpenAIRE

    Szabó, Gergely

    2014-01-01

    Tato bakalářská práce je odbornou rešerší zabývající se parním kotlem na biomasu. Hlavním cílem práce je popis stavby, funkce jednotlivých částí a regulace kotle. První část práce je věnována kotlům obecně, představuje typy paliva, zaměří se na kotle spalující tuhá paliva a popisuje parní generátor kotlů. Druhá část práce se zabývá konkrétním parním biomasovým kotlem, popisuje jeho hlavní části a pojednává o regulačních obvodech kotle.

  9. Automatický kotel na pelety

    OpenAIRE

    Sklenář, Vít

    2015-01-01

    Cílem této diplomové práce je rešerše automatických kotlů na dřevní pelety a jejich hořáků, konstrukční návrh automatického kotle na dřevní pelety, který zahrnuje výpočtovou a výkresovou část a na závěr technicko-ekonomické posouzení užití kotle pro zvolený objekt. Práce je rozdělena do čtyř hlavních částí. První část práce se zabývá obecnými informacemi o peletách, automatických kotlech spalujících pelety, hořácích a normou, kterou tyto kotle musí plnit. Ve druhé části je proveden návrh auto...

  10. Resonances production from the NA60 experiment

    Directory of Open Access Journals (Sweden)

    De Falco A.

    2012-11-01

    Full Text Available The NA60 experiment at the CERN SPS has studied light vector meson production in In-In collisions at 158A GeV. The ϕ meson was detected via both the K+K− and the μ+μ− decay channels. The yields and inverse slope parameters of the mT spectra observed in the two channels are compatible within errors, different from the large discrepancies seen in Pb-Pb collisions between the hadronic (NA49 and dimuon (NA50 decay channels. In the invariant mass region 0.2 1 GeV, the excess is found to be prompt, with remarkable differences with respect to the Drell-Yan process. The Teff slope parameter, extracted from the transverse mass spectra, shows a rise with mass up to the ρ, followed by a sudden decline for higher masses. The former is consistent with radial flow of a hadronic source, while the latter suggests a dominantly partonic emission source.

  11. NA1, NA1, NA1-trimethylinsulin--an insulin analogue with a quaternary amino group at the A1 terminus.

    Science.gov (United States)

    Drewes, S E; Magojo, H E; Gliemann, J

    1981-06-01

    By utilizing the differing reactivity of the amino groups in aqueous organic solvents, des-GlyA1-NB1,N epsilon B29-(Msc)2-insulin was prepared. Its reaction with the phenyl ester of N,N,N-trimethylglycine in the presence of N-hydroxysuccinimide afforded the crystalline NA1,NA1,NA1-trimethylinsulin analogue. In the fat cell assay this analogue has an activity of 49% and, in the mouse convulsion assay, it is 70%. PMID:7024089

  12. GVERILSKI MARKETING NA PRIMERU PODJETJA HIT D.D.

    OpenAIRE

    Rudan, Blaž

    2010-01-01

    V diplomskem delu sem se osredotočil na alternativo klasičnemu marketinškemu komuniciranju in sicer na ti. gverilski marketing. Pri delu sem skušal uporabiti čim bolj inovativne in presenetljive pristope marketinškemu komuniciranju, kar je nedvomno bistvena sestavina gverilskega marketinga. Gverilski marketing temelji, namesto na ogromnih finančnih sredstvih, na vloženem trudu, času in predvsem na dobršni meri domišljije oz. inovativnosti. Se pa gverilski marketing od klasičnega razlikuje še ...

  13. E-IZOBRAŽEVANJE NA DOKTORSKEM ŠTUDIJU

    OpenAIRE

    Novaković, Olivera

    2012-01-01

    Razvoj novih tehnologij (predvsem IKT) ima pomemben vpliv tudi na izobraževanje, zato si danes težko zamislimo študij na daljavo brez uporabe vsaj nekaterih oblik in tehnologij e-izobraževanja. Razvoj v tej smeri je prišel do točke, ko ko je potrebno tradicionalno delitev na klasično izobraževanje in izobraževanju na daljavo preoblikovati v delitev na klasično in odprto izobraževanje, kjer v kontekstu slednjega e-izobraževanje postaja njegova glavna komponenta. Velik pomen e-izobraževanj...

  14. LOGOTIPI SKOZI ČAS - NA PRIMERU OLIMPIJSKIH LOGOTIPOV

    OpenAIRE

    Žalik, Saša

    2014-01-01

    Skozi bogato in dolgo zgodovino olimpijskih iger je šport postal ena izmed največjih »industrij« na svetu. Sodobno oglaševanje se osredotoča na potrošnika predvsem na vizualen način. Ljudje se v prvi vrsti identificirajo z olimpijskimi igrami preko logotipa oz. olimpijskih krogov, ki spadajo med najbolj prepoznaven znak na svetu. V diplomski nalogi je bil predstavljen olimpijski logotip kot vizualna predstavitev svetovnega medijskega dogodka. Raziskan je bil razvoj logotipov olimpijskih ig...

  15. OBRAVNAVA BOLNIKOV PO ZDRAVLJENJU RAKA NA DEBELEM ČREVESU

    OpenAIRE

    Ljuljđuraj, Petar

    2013-01-01

    Diplomsko delo obravnava rak na debelem črevesu in nadaljnjo rehabilitacijo pacienta po odpustu iz bolnišnice. Pri izdelavi diplomskega dela smo uporabili deskriptivno metodo dela. V prvem delu diplomskega dela predstavimo debelo črevo, anatomijo, delovanje debelega črevesa in najpogostejše bolezni na debelem črevesu. Tu smo se predvsem osredotočili na rak debelega črevesa, ker je tretji najpogostejši rak na svetu in drugi najpogostejši v Evropi. Predstavili smo tudi način odkrivanja, pre...

  16. HIDRAVLIČNA ANALIZA VODOVODNEGA SISTEMA REČICA

    OpenAIRE

    Jamnikar, Rok

    2010-01-01

    Diplomsko delo obravnava hidravlične razmere na vodovodnem sistemu Rečica. Pri tem je poudarek predvsem na analizi tlačnih in pretočnih razmer s pomočjo uporabe ustreznega programskega orodja. Vsebina dela je razdeljena na teoretični in praktični del. Teoretični del zajema znanja, potrebna za ustrezno vzpostavitev hidravličnega modela, izračune ter analizo hidravličnih razmer, medtem ko se v praktičnem delu osredotočim na konkretno zasnovo vodovodnega sistema Rečica. Na podlagi zasnove...

  17. Vpliv sončnih elektrarn na napetostni profil

    OpenAIRE

    Zupanc, Karel

    2013-01-01

    Z vključevanjem sončnih fotonapetostnih elektrarn v elektroenergetski sistem lahko vplivamo na smer pretoka moči in posledično napetostni profil vzdolž nizkonapetostnega omrežja. Cilj magistrskega dela je bil na podlagi meritev in analitičnega orodja prepoznati ter ovrednotiti eventualne negativne vplive na napetostni profil. Ugotovili smo, da sončne fotonapetostne elektrarne na obravnavanem področju vplivajo na napetostni profil, vendar v mejah dovoljenega. To pa ne pomeni, da negativne...

  18. Kaštel Sv. Mihovila na otoku Ugljanu

    OpenAIRE

    Sorić, Sofija

    2012-01-01

    Namjera je rada svrnuti pažnju na veliku i dobro očuvanu srednjovjekovnu utvrdu na otoku Ugljanu koja je značajnu povijesnu ulogu odigrala u zadarsko-mletačkim sukobima 1345. i 1346. godine. Srednjovjekovni kaštel nalazi se na važnoj strateškoj točki u nadgledanju plovidbe u zadarskom akvatoriju te je vjerojatno nastao na mjestu ranije utvrde iz 6. stoljeća. Benediktinski samostan s crkvicom Sv. Mihovila smjestio se na mjestu utvrde najkasnije u 12. stoljeću, a djelovao je ...

  19. Reactions of metal oxides with molten NaPO3 + NaCl mixtures

    International Nuclear Information System (INIS)

    We consider the dissolution mechanism for iron (III), europium(III), and tin(IV) oxides in molten NaPO3 + NaCl that are responsible for the peak solubilities. We chose Fe2O3 as the basic material since this occurs in large amounts around damaged metal structures in rock salt mines in a proposed zone for storing vitrified radioactive wastes. Solubility measurement and paper chromatography show that Fe2O3 dissolves in molten NaPO3 + NaCl in air by reaction with the solvent to give double iron and sodium diphosphates and monophosphates in accordance with the initial solution-in-the-melt composition, the degree of equilibration, and the temperature. The elevated solubilities for initial NaCl contents close to 30 mole % are due to sodium triphosphates and tricyclophosphates present in these melts. Moessbauer spectroscopy confirms that double iron, europium and tin diphosphates and monophosphates containing sodium occur in these chloride-polyphosphate melts

  20. Acidosis differentially modulates inactivation in NaV1.2, NaV1.4, and NaV1.5 channels

    Directory of Open Access Journals (Sweden)

    PeterRuben

    2012-06-01

    Full Text Available NaV channels play a crucial role in neuronal and muscle excitability. Using whole-cell recordings we studied effects of low extracellular pH on the biophysical properties of NaV1.2, NaV1.4, and NaV1.5, expressed in cultured mammalian cells. Low pH produced different effects on different channel subtypes. Whereas NaV1.4 exhibited very low sensitivity to acidosis, primarily limited to partial block of macroscopic currents, the effects of low pH on gating in NaV1.2 and NaV1.5 were profound. In NaV1.2 low pH reduced apparent valence of steady-state fast inactivation, shifted the τ(V to depolarizing potentials and decreased channels availability during onset to slow and use-dependent inactivation. In contrast, low pH delayed open-state inactivation in NaV1.5, right-shifted the voltage-dependence of window current, and increased channel availability during onset to slow and use-dependent inactivation. These results suggest that protons affect channel availability in an isoform-specific manner. A computer model incorporating these results demonstrates their effects on membrane excitability.

  1. Kazališna umjetnost i Franjo Marković, s posebnim osvrtom na recepciju u novinama na njemačkom jeziku

    OpenAIRE

    Papić Bogadi, Valentina; Peklić, Ivan

    2012-01-01

    Autori u članku na temelju izvorne građe i literature opisuju djelatnost Franje Markovića vezanu uz kazalište. Na početku rada autori su prikazali kratki životopis Franje Markovića. Istaknuli su teoretske osnove Markovićeva rada koji se odnosi na kazališnu umjetnost. Autori su prikazali Markovića kao pisca dramskih djela, posebno se osvrnuvši na njegove drame u kazalištu. Markovićeve drame prikazivane su u Hrvatskom narodnom kazalištu, a kritike objavljivane u novinama. Osim kritika u novi...

  2. Synthesis of Na-A and/or Na-X zeolite/porous carbon composites from carbonized rice husk

    International Nuclear Information System (INIS)

    Na-A and/or Na-X zeolite/porous carbon composites were prepared under hydrothermal conditions by NaOH dissolution of silica first from carbonized rice husk followed by addition of NaAlO2 and in situ crystallization of zeolites i.e., using a two-step process. When a one-step process was used, both Na-A and Na-X zeolites crystallized on the surface of carbon. Na-A or Na-X zeolite crystals were prepared on the porous carbonized rice husk at 90 deg. C for 2-6 h by changing the SiO2/Al2O3, H2O/Na2O and Na2O/SiO2 molar ratios of precursors in the two-step process. The surface area and NH4+-cation exchange capacity (CEC) of Na-A zeolite/porous carbon were found to be 171 m2/g and 506 meq/100 g, respectively, while those of Na-X zeolite/porous carbon composites were 676 m2/g and 317 meq/100 g, respectively. Na-A and Na-X zeolites are well-known microporous and hydrophilic materials while carbonized rice husk was found to be mesoporous (pores of ∼3.9 nm) and hydrophobic. These hybrid microporous-mesoporous and hydrophilic-hydrophobic composites are expected to be useful for decontamination of metal cations as well as organic contaminants simultaneously. - Graphical Abstract: Novel Na-X zeolite/porous carbon composite.

  3. The brute-force polarization of 23Na and the 23Na(n,γ)24Na reaction

    International Nuclear Information System (INIS)

    A Na target has been polarized by brute force to 22% and the γ radiation produced by polarized thermal neutron capture has been investigated. The 2+ channel spin contribution has been determined model independently and unambiguously for 22 primary transitions. The average 2+ channel contribution is 5.8(5)%. Spins of final levels are in agreement with previous assignments. For three levels spin restrictions have been made. The energies of positive parity levels are in agreement with a shell model calculation in the complete sd shell. (Auth.)

  4. Na+-K+ pump in chronic renal failure

    International Nuclear Information System (INIS)

    This review summarizes the evidence for the defect in Na+-K+ pump in chronic renal failure, considers the role of various factors in causing this defect, and discusses the clinical implications thereof. Intracellular Na is elevated in erythrocytes, leukocytes, and muscle cells from some patients with chronic renal failure (CRF). Recent evidence suggest that this elevation of cell Na may be, in large part, a consequence of decreased number of Na+-K+ pump units per cell. Maintenance dialysis over a period of weeks ameliorates the defect in intracellular Na+, and this improvement is contemporaneous with an increase in the number of Na+-K+ pump sites per cell. In erythrocytes with normal cell Na+, acute hemodialysis increases the rate of 22Na+ and 42K+ transport. Many factors such as the presence of retained toxic metabolite or circulating inhibitor in the uremic plasma, or biochemical changes produced by acute hemodialysis, may explain this finding. In cells with high cell Na+, the pump-mediated 42K+ transport is normalized at the expense of a raised cell Na+. The decreased muscle membrane potential in uremic subjects has been attributed to a decreased activity of Na+-K+ pump. The authors discuss the role of hormonal abnormalities and circulating inhibitors, which may cause an acute inhibition of the pump and of other factors such as K+ depletion, which may cause more chronic alterations. The implications of alteration of Na+ and K+ pump transport and raised cell Na+ on other non-pump-mediated transport pathways are discussed. Raised cell Na+ may be a marker for the adequacy of maintenance dialysis in patients with end-stage renal failure

  5. A coprecipitation technique to prepare NaNbO3 and NaTaO3

    Indian Academy of Sciences (India)

    V Samuel; A B Gaikwad; V Ravi

    2006-04-01

    A simple coprecipitation technique has been used successfully for the preparation of pure, ultrafine, single phases of NaNbO3 (NN) and NaTaO3 (NT). An alcoholic solution of ammonium carbonate and ammonium hydroxide was used to precipitate Na+ and Nb5+ (or Ta5+) cations under basic conditions as carbonate and hydroxide, respectively. On heating at 700°C, these precursors produce respective products. For comparison, both NN and NT powders were also prepared by the traditional solid state method. The phase purity and lattice parameters were studied by powder X-ray diffraction (XRD). The particle size and morphology were studied by scanning electron microscopy (SEM).

  6. Recovery of the heavy elements by NaY AND NaZSM-5 sorbant materials

    International Nuclear Information System (INIS)

    Porous sorbants as zeolites have a several applications in differents fiels: industrial gas purification, catalysis, transformation hydrocarbures prosesses and exchange ions. The hiogh capacity to exchange their cations with those of aqueous solutions was known (1). Since the accession of synthetic zeolites, these silicates have invaded the market and the firstindustrial applications were in exchange field. Studies at Battelle Northwest in Rchland, Washington have shown that zeolites may be used in treatment of radioactive wastes (2). The used method for storing the isotopes is based on selective removal by ion exchange. Clinoptilolite, zeolite (modernite), NaA, and AW-500 have been used. In this context, the present work deals with the recovery of heavy metals like lead and uranium using some microporous materials. The obtained results show that NaY faujasite and NaZSM-5 of the FAU- and MFI-type structure respectively are very effective in removing these elements from waste water

  7. Reaction of metal oxides with molten mixtures NaPO3+NaCl

    International Nuclear Information System (INIS)

    By methods of solubility determination and paper chromatography it is shown, that Fe2O3 solution in NaPO3+NaCl melts in the air relizes due to its chemical interaction with solvent resulting in formation of iron and sodium binary di- and monophosphates depending on melt-solvent initial composition, its attainment of equilibrium state and experiment temperature. It is established, that oxides increased solubility in melts with NaCl initial content ∼30 mol.% is specified by sodium tri- and tricyclophosphates presence in the melts. On this basis of NGR-spectroscopy data the presence of iron, europium, tin and sodium binary di- and monophosphates in some chloride-polyphosphate melts is confirmed

  8. Specific oxidation pattern of soluble starch with TEMPO-NaBr-NaClO system.

    Science.gov (United States)

    Hao, Jie; Lu, Jiaojiao; Xu, Naiyu; Linhardt, Robert J; Zhang, Zhenqing

    2016-08-01

    Oxidized starch, one of the most important starch derivatives, has many different properties and applications. Currently, there are two ways to produce oxidized starch, through specific and nonspecific oxidation. Specific oxidation using the stable nitroxyl radical, 2,2,6,6-tetramethyl preparidinloxy (TEMPO), with NaBr and NaClO can produce oxidized starches with different properties under good quality control. In the current study, we examine the products of specifically oxidized starch. As the amount of oxidant and the temperature, two critical factors impacting the oxidation of starch were thoroughly investigated. Analysis of the molecular weight (MW), degree of oxidization (DO) and the detailed structures of corresponding products was accomplished using gel permeation chromatography with multi-angle laser light scattering (GPC-MALLS), infrared (IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, and quadrapole time-of-flight mass spectrometry (Q/TOF-MS). According to the analytical results, the oxidation patterns of starch treated with specific oxidant TEMPO-NaBr-NaClO were established. When high amounts of oxidant was applied, more glucose residues within starch were oxidized to glucuronic acids (higher DO) and substantial degradation to starch oligosaccharides was observed. By selecting a reaction temperature of 25°C a high DO could be obtained for a given amount of oxidant. The reducing end sugar residue within oxidized starch was itself oxidized and ring opened in all TEMPO-NaBr-NaClO reactions. Furthermore, extra oxidant generated additional novel structures in the reducing end residues of some products, particularly in low temperature reactions. PMID:27112871

  9. Vpliv metode načrtovanja nosilnosti na količino armature armiranobetonske stavbe

    OpenAIRE

    Hrastnik, Miha

    2015-01-01

    V diplomski nalogi obravnavamo šestetažno armiranobetonsko stavbo z dvema kletnima etažama. Cilj naloge je ugotoviti razliko v potrebni količini armature v nosilnih elementih stavbe, če jo določimo glede na obremenitve iz potresnega projektnega stanja z upoštevanjem pravil standarda SIST EN 1992, ali z upoštevanjem obeh standardov SIST EN 1992 in 1998, ki predpisuje strožje konstrukcijske zahteve in predvideva uporabo postopka načrtovanja nosilnosti, kar povečuje varnost pri proje...

  10. Programar para prevenir : o uso do Scratch na segurança na internet

    OpenAIRE

    Lopes, Ana João Ribeiro; Coutinho, Clara Pereira

    2013-01-01

    O ambiente de programação Scratch, criado pelo MIT em 2007, permite criar facilmente histórias interativas, animações, jogos, música e arte e partilhar essas criações na web. O presente artigo apresenta um projeto de intervenção pedagógica supervisionada, com uma componente investigativa, que envolveu a utilização do Scratch, como estratégia para promover o desenvolvimento de competências e estruturar conhecimentos relativos à Segurança na Internet. O estudo foi implementado numa ...

  11. Vpliv načina shranjevanja gozdnih sekancev na njihovo vlažnost

    OpenAIRE

    Rosc, Janez

    2014-01-01

    Uporaba ter poraba lesne biomase se v zadnjih desetletjih povečuje. S tem se pojavlja potreba po izboljšanju trga lesne biomase - od pridobivanja do sušenja in skladiščenja. Raziskava v pričujoči nalogi temelji na področju sušenja lesnih sekancev. Za poskus je bil uporabljen svež okrogel les bukve, od katerega je bil del zmlet v lesne sekance (4 zaboji), preostanek pa zložen na skladišču, kjer je bila merjena njegova vlažnost. Trije zaboji so bili postavljeni zunaj

  12. Osteoporose na infância e na adolescência

    OpenAIRE

    Campos Lúcia M. A.; Liphaus Bernadete L.; Silva Clóvis A. A.; Pereira Rosa M. R.

    2003-01-01

    OBJETIVO: Revisar a literatura acerca da osteoporose na infância e adolescência, abordando diagnóstico, prevenção e tratamento de osteopenia e osteoporose. FONTE DOS DADOS: Foram utilizadas informações através de revisão bibliográfica, realizada por busca direta de artigos científicos e por pesquisa nas bases de dados Medline e Lilacs, no período de 1992 a 2002. SÍNTESE DOS DADOS: O artigo é estruturado em tópicos, nos quais procura-se definir e classificar a osteoporose na infância, enfatiza...

  13. Fitoterápicos na odontologia: estudo etnobotânico na cidade de Manaus

    Directory of Open Access Journals (Sweden)

    S. S. Evangelista

    2013-01-01

    Full Text Available O reconhecimento oficial da fitoterapia na odontologia no Brasil veio acompanhado de diversas lacunas na pesquisa científica e na utilização de plantas medicinais, especificamente para espécies vegetais com aplicação nas doenças da cavidade oral. O estado do Amazonas, especificamente a cidade de Manaus, não possui um diagnóstico da aplicabilidade de plantas medicinais nos serviços de atenção Odontológica. Esse estudo propôs realizar um estudo do tipo quali-quantitativo, descritivo e exploratório visando o levantamento da comercialização de plantas medicinais e o estudo etnobotânico para identificação das principais plantas medicinais indicadas e utilizadas nas patologias orais nos atendimentos odontológicos ambulatoriais na cidade de Manaus. Foram entrevistados 197 usuários do serviço odontológico, 150 Cirurgiões-Dentistas, e 47 comerciantes credenciados na prefeitura Municipal de Manaus. A amostragem foi realizada por acessibilidade ou conveniência para os Cirurgiões-Dentistas, enquanto os usuários foram selecionados através de amostragem aleatória simples, e os comerciantes de plantas medicinais foram entrevistados em sua totalidade. Os resultados demonstraram a existência de comercialização de plantas medicinais para patologias orais, destacando-se as seguintes espécies: Pedra ume cãa (Aulomyrcia sphareocarpa, Crajiru (Arrabidae chica, além da planta, sem identificação botânica, conhecida popularmente como Sara tudo. Entre os Cirurgiões-Dentistas e entre os pacientes, apenas 8% e 7,61%, respectivamente, utilizaram plantas medicinais para alterações patológicas orais. Os autores concluíram que as plantas medicinais comercializadas na cidade de Manaus são utilizadas de maneira empírica e que, apesar da Política Nacional de Práticas Integrativas e Complementares (PNPIC, novas políticas públicas de saúde devem inserir plantas medicinais e fitoterápicos de uso oral na rede pública de saúde na

  14. OGLAŠEVANJE NA SOCIALNEM OMREŽJU FACEBOOK, NA PRIMERU SPLETICNA.SI

    OpenAIRE

    Reisman, Nina

    2011-01-01

    Internet je od svojega razvoja dolgo časa obstajal kot prostor za enostransko komunikacijo. Isto se je dogajalo na televiziji, radiu in časopisih, kjer je javnost sprejemala informacije, ki jih je nekdo pripravil. Tradicionalni mediji so hitro doumeli, da takšna vrsta komunikacije ni naravna in ne predstavlja najboljšega ohranjanja gledalcev in poslušalcev. Začela se je uporabljati dvosmerna komunikacija. Trenutno v svetu najbolje poznan primer dvosmerne komunikacije je socialno omrežje F...

  15. Mikcijska ultrazvučna cistografija uz softver osjetljiv na kontrast u dijagnostici vezikoureteralnog refluksa

    OpenAIRE

    Roić, Goran; Cvitković Roić, Andrea; Palčić, Iva; Miletić, Damir

    2014-01-01

    Razvojem tehnologije specifičnog softvera osjetljivog na kontrast i uvođenjem ultrazvučnog kontrastnog sredstva mikcijska ultrazvučna cistografija postala je rutinska metoda u dijagnostici vezikoureteralnog refluksa u dječjoj dobi. Mnoge studije pokazuju da je osjetljivost ove metode veća u usporedbi s mikcijskom cistouretrografijom, a vrlo bitna prednost je izostanak korištenja ionizirajućeg zračenja. Posljednjih je godina sve viša svijest o potencijalnim štetnim učincima izloženosti ionizir...

  16. Glosa o narcyzmie na marginesie "Lodowych pól" Zofii Nałkowskiej

    OpenAIRE

    Zawiszewska, Agata

    2013-01-01

    The article suggests a reading of Nałkowska’s first work, treated as a literary study of narcissism. In "Lodowe pola" Nałkowska made an unsuccessful attempt to express the work through an inner narcissistic conflict, giving the protagonist, Janka Dernowiczówna, the qualities of narcissistic personality, such as individualism, dandyism, estheticism, Nietzsche-ism, atrophy of instinct, need for self-control, stage directing of life, and never-satisfied self love. The author also transferred her...

  17. »Orijentalna renesansa« na Pacifiku: orijentalizam, jezik i etnogeneza na britanskom Pacifiku

    OpenAIRE

    Ballantyne, Tony

    1999-01-01

    U članku autor sugerira da »orijentalna renesansa« koju je utemeljio Raymond Schwab nije ograničena na kontinentalnu Europu i Veliku Britaniju, nego je zapravo bila ključna, često zanemarivana nit u intelektualnom životu australoazijskih kolonija. Britanske imperijalne mreže, zajedno s cirkulacijom stručne periodike i monografija, osigurale su da je Britansko Carstvo temeljito oblikovalo intelektualnu kulturu Novog Zelanda u 19. stoljeću i da je ona bila istaknuta u debatama o podrijetlu i id...

  18. Mobilidade urbana na era digital: impactos do teletrabalho na mobilidade e espaço urbano

    OpenAIRE

    Baggi, Márcia S.; Moreno Delgado, Juan Pedro

    2012-01-01

    As cidades contemporâneas sofrem o efeito das Novas Tecnologias da Informação e comunicação – NTIC, as quais impactam na sua organização espacial e dinâmica urbana, remodelando-a em distintas esferas. Neste contexto, o presente artigo buscou identificar e analisar os impactos causados pelas NTIC na mobilidade e espaço urbano, através da análise do teletrabalho como estratégia de gerenciamento da mobilidade, que busca promover a eficiência e eficácia dos deslocamentos através da sua raci...

  19. 四元体系NaCl-NaBr-Na2SO4-H2O348K相平衡研究%Study on Phase Equilibria for Quaternary System of NaCl-NaBr-Na2SO4-H2O at 348 K

    Institute of Scientific and Technical Information of China (English)

    张勇刚; 桑世华; 张凯杰; 胡富铭; 崔瑞芝

    2013-01-01

    The phase equilibria of the quaternary system of NaCl - NaBr - Na2SO4 - H2O at 348 K are investigated, and the solubility and density of the solution are determined by isothermal e-quilibrium method. The experimental results indicate that the quaternary system is the system with solid in the solution. Based on the experimental data, the phase diagram of the quaternary system is plotted, which consists of a univariant dissolution curve and two crystallization fields: Na ( Cl 、Br) and Na2SO4. The experimental results show that the sodium bromide has the salting - out effect on sodium chloride. Meanwhile, the rule of density is discussed briefly.%采用等温溶解平衡法研究了348 K下四元体系NaCl-NaBr-Na2 SO4-H2O的相平衡规律,测定了平衡液相的溶解度和密度.研究发现,四元体系NaCl-NaBr-Na2SO4-H2O是含有固体溶液的体系.根据实验研究数据绘制了等温溶解度图,相图中只有一条单变量溶解曲线,两个结晶相区,平衡固相分别为Na(Cl、Br)和Na2SO4.实验结果表明,NaBr对NaCl具有盐析效应,并简要讨论了密度变化规律.

  20. 1 nA Beam position monitor

    International Nuclear Information System (INIS)

    A new BPM system, based on resonant cavities, has been developed for measuring the transverse position of very low-intensity electron beams delivered to Experimental Hall B at the Continuous Electron Beam Accelerator Facility (CEBAF) in Newport News. VA. The system requirements called for measuring down to 1 nA with a 100 m m resolution. The actual system is much better: it can measure down to 100 pA at the 100 m m required resolution. A 100 pA beam yields about 1 electron per bunch. Each 1 nA BPM utilizes three resonant RF cavities to determine the position of the beam: one cavity sensitive to X position, a second cavity sensitive to Y position, and a third cavity which measures intensity. The position cavities operate at room temperature in a dipole type mode at 1497 MHz and contain internal field perturbing rods in an arrangement similar to that of the CEBAF rf Separator cavities. The position cavities are electron beam welded assemblies made of copper plated stainless steel. The RF output signal from each cavity is processed using a down-converter and a DSP based commercial lock-in amplifier operating at 100 kHz. The lock-in amplifiers connect to the EPICS control system via an IEEE 488 bus. System features under development include intensity and position modulation measurement capabilities. This paper provides measured performance results and an updated overview of the installed and operational 1 nA BPM system. copyright 1998 American Institute of Physics

  1. Linguagens na TV Languages on tv

    Directory of Open Access Journals (Sweden)

    Glaucia Guimarães

    2008-06-01

    Full Text Available Este artigo aborda questões relativas às estratégias discursivas utilizadas na produção dos textos televisivos. Com base na Análise Crítica de Discurso (ACD, nos termos em que é formulada por Norman Fairclough, o trabalho analisa os modos pelos quais as linguagens (incluindo materiais semióticos diversos são articuladas na/pela TV, sistematiza as relações entre a articulação de linguagens e a produção de efeitos de sentido, bem como os modos de sua inscrição nas tendências discursivas contemporâneas, a saber: democratização, tecnologização e comodificação. A partir das relações entre as práticas de linguagem e as tendências destacadas, o artigo tece considerações sobre as condições de produção de leituras críticas dos textos multimidiáticos, nas suas múltiplas dimensões: dos contextos e mecanismos da produção textual à pluralidade constitutiva de sua recepção.This paper deals with issues related to discursive strategies in the production of TV texts. Based on Critical Discourse Analysis (CDA, as formulated by Norman Fairclough, it analyzes the ways languages (including several semiotic materials are articulated in order to produce a range of wanted meaning effects, as well as the ways they are inscribed in the contemporary discursive trends discussed by the author, namely: democratization, technologization and commodification. Departing from the analysis of language practices and the discursive trends underlined, the paper aims at clarifying the multiple dimensions of multimedia conditions of production, focusing on both the context and the mechanisms and the diverse reception (reading possibilities.

  2. NaI(Tl) response functions

    Energy Technology Data Exchange (ETDEWEB)

    Vega C, H. R.; Ortiz R, J. M. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas, Zac. (Mexico); Benites R, J. L. [Centro Estatal de Cancerologia de Nayarit, Calz. de la Cruz 118 Sur, Tepic, Nayarit (Mexico); De Leon M, H. A., E-mail: fermineutron@yahoo.com.mx [Instituto Tecnologico de Aguascalientes, Av. Adolfo Lopez Mateos 1801 Ote., 20155 Aguascalientes, Ags. (Mexico)

    2015-09-15

    The response functions of a NaI(Tl) detector have been estimated using Monte Carlo methods. Response functions were calculated for monoenergetic photon sources (0.05 to 3 MeV). Responses were calculated for point-like sources and for sources distributed in Portland cement cylinders. The responses were used to calculate the efficiency functions in term of photon energy. Commonly, sources used for calibration are point-like, and eventually sources to be measured have different features. In order to use the calibrated sources corrections due to solid angle, self-absorption and scattering, must be carried out. However, some of these corrections are not easy to perform. In this work, the calculated responses were used to estimate the detector efficiency of point-like sources, and sources distributed in Portland type cement. Samples of Portland paste were prepared and were exposed to photoneutrons produced by a 15 MV linac. Some of the elements in the cement were activated producing γ-emitting radionuclides that were measured with a NaI(Tl) gamma-ray spectrometer, that was calibrated with point-like sources. In order to determine the specific activity in the induced radioisotopes calculated efficiencies were used to make corrections due to the differences between the solid angle, photon absorption and photon scattering in the point-like calibration sources and the sources distributed in cement. During the interaction between photoneutrons and the cement samples three radioisotopes were induced: {sup 56}Mn, {sup 24}Na, and {sup 28}Al. (Author)

  3. Dependence of thermoluminescence in LiF:Mg,Cu,Na,Si phosphor on Na dopant concentration and thermal treatment

    International Nuclear Information System (INIS)

    A new phosphor, LiF:Mg,Cu,Na,Si, has been developed in this laboratory for thermoluminescence. The thermoluminescence dependence on the concentration of Na dopant between 0 mol% and 0.45 mol% and thermal treatment between 240 deg. C and 310 deg. C was investigated. With an increase of Na concentration, the TL sensitivity and the main peak increase when the annealing temperature is less than 300 deg. C. With an increase of annealing temperature, the position of the main glow peak shifts markedly towards higher temperatures, irrespective of Na concentrations. The height of the main peak depends strongly on the annealing temperature. TL sensitivity remains stable at annealing temperatures from 260 deg. C to 300 deg. C for 0 mol% Na concentration, from 250 deg. C to 300 deg. C for 0.05 mol% N concentration, from 260 deg. C to 290 deg. C for 0.1 mol% Na concentration, from 260 deg. C to 280 deg. C for 0.2 mol% Na concentration, from 250 deg.C to 270 deg. C for 0.35 mol% Na concentration, or from 260 deg. C to 280 deg. C for 0.45 mol% Na concentration. The ratio of the intensity annealed at 310 deg. C to the intensity annealed at 260 deg. C seems to be reduced with an increase of Na concentration. Thermal susceptibility of LiF:Mg,Cu,Na,Si appears to be associated with the Na concentration. The lower the Na concentration, the less sensitive the TL is to annealing temperature. The optimum Na dopant concentration was found to be 0%

  4. Sprejem agresivnega pacienta na oddelek za psihiatrijo

    OpenAIRE

    Horvat, Andrej

    2014-01-01

    Agresija in nasilje predstavljata velik problem v družbi. Agresija se lahko izrazi v različnih oblikah, od blagih, kot je povzdignjen glas, pa vse do nenadnega fizičnega napada. Najpogosteje je prisotna verbalna agresija, kot so grožnje, izzivanja. Agresivni izbruhi imajo neugoden vpliv na zdravje, varnost in dobro počutje ostalih pacientov in oddelčnega osebja. Medicinske sestre in zdravstveni tehniki imajo visoko stopnjo tveganja, da so žrtve agresivnega vedenja s strani pacientov. V diplom...

  5. ANALIZA KOMUNIKACIJSKIH PROTOKOLOV NA PLATFORMI ARM

    OpenAIRE

    Vegan, Janez

    2015-01-01

    Magistrsko delo obravnava zajem, analizo in prikaz signalov različnih komunikacijskih protokolov v realnem času. Podrobno so predstavljena strojna in programska oprema ter razvojna okolja, s pomočjo katerih smo realizirali sistem za analizo protokolov. V okviru magistrskega dela smo razvili program za platformo ARM, ki na LCD-zaslonu v realnem času prikazuje vsebino zajetih podatkov po protokolih IR (SIRC, NEC, RC6), I2C, SPI in UART. Razvili smo tudi program za stm32F100, ki oddaja v protoko...

  6. Cerenkov counter for the experiment NA3

    CERN Multimedia

    1978-01-01

    The program of the NA3 experiment included the study of hadronic interactions with a large transverse momentum pT, thus the inclusion in the set-up of three gas threshold Cerenkov counters of large acceptance. The photo shows the downstream part of the second Cerenkov (located at the output of the magnet). The yellow membrane is a temporary protection for the optics (shown in photo 7810540X) to be taken away when fixing this part to the gas tank (entering the magnet and not shown). The photomultipliers all around are heavily shielded.

  7. Ekstremni primjer izgaranja na poslu - sindrom karoshi

    OpenAIRE

    Koić, Elvira; Poredoš Lavor, Daša

    2009-01-01

    Karoshi sindrom je pojam kojim se označava ekstremni negativni stres i izgaranje na poslu koje rezultira iznenadnom smrti, a što se povezuje s prekomjernim radom, kompliciranim i previsokim zahtjevima koji se postavljaju radniku i izostankom adekvatne socijalne podrške, a često se povezuje i sa sindromom mobinga. Srčani ili moždani udar ili suicidalni izlaz, uzrokovani nakupljenim negativnim stresom zbog "predoziranja poslom", najčešća su posljedica. Iznenadnoj smrti često prethodi kronični u...

  8. POVRATAK NA POSAO NAKON PROFESIONALNE MULTIDISCIPLINARNE REHABILITACIJE

    OpenAIRE

    Rozman, Sanja

    2009-01-01

    SAŽETAK: U slovenskom nacionalnom Institutu za rehabilitaciju u Ljubljani provodi se organizirana suradnja timova za medicinsku rehabilitaciju i radnu rehabilitaciju. Članak je posvećen suradnji između liječničkih timova i timova za radnu rehabilitaciju. Postupak radne rehabilitacije počinje procjenom funkcionalnih i radnih sposobnosti, a slijedi ga razrada plana rehabilitacije kako bi se invalidna osoba mogla vratiti na posao. Sve poduzete radnje moraju imati bolesnika u središtu pažnje. Ana...

  9. Status of the NA62 Experiment

    Science.gov (United States)

    Palladino, Vito

    2016-04-01

    The rare decays {{{K}}^ + } to {π ^ + }{{ν bar ν }} are excellent processes to make tests of new physics at the highest scale complementary to LHC thanks to their theoretically cleaness. The NA62 experiment at CERN SPS aims to collect of the order of 100 events in two years of data taking, keeping the background at the level of 10%. Part of the experimental apparatus has been commissioned during a technical run in 2012. The physics prospects and the status of the experiment will be reviewed after the commissioning run of 2014 and the data taking in 2015.

  10. Anti-semitismo na Europa hoje

    OpenAIRE

    Bila Sorj

    2007-01-01

    O termo "anti-semitismo" é utilizado nas manifestações de hostilidade contra os judeus desde a Antiguidade. No entanto, como fenômeno histórico, o anti-semitismo é parte integrante das dinâmicas socioculturais e políticas de cada sociedade. Este artigo enfoca particularmente as especificidades que ele assume hoje na Europa Ocidental.The term "anti-Semitism" is employed in manifestations of hostility against Jews since Antiquity. However, as a historical phenomenon, the anti-Semitism is part o...

  11. VGRAJEN SISTEM UPRAVLJANJA VRAT NA DALJAVO

    OpenAIRE

    Stojak, Aleš

    2016-01-01

    V danem diplomskem delu je bil razvit in izveden vgrajen sistem za upravljanje vrat na daljavo. Za ta namen je uporabljen 32-bitni mikrokrmilnik. Kateri služi kot spletni strežnik in upravlja z vhodno/izhodnimi moduli. Vgrajen sistem vključno s kamero je razvit za uporabo v 12 V in 24 V sistemih motoriziranih vrat in alarmnih sistemih. Spletna stran ponuja funkcije, katere omogočajo upravljanje vrat, alarmnega sistema in konfiguracijo vgrajenega sistema. Ogled slike v živo je vgrajen v spl...

  12. Radioekologija mora i upravljanje otpadom na Jadranu

    OpenAIRE

    Franić, Zdenko; Petrinec, Branko

    2006-01-01

    Dan je pregled i opis radioekoloških istraživanja jadranskog područja koja provodi Jedinica za zaštitu od zračenja Instituta za medicinska istraživanja i medicinu rada. Mjerenja radioaktivnosti na Jadranu započela su godine 1963. kao dio proširenog programa monitoringa radioaktivnosti okoliša u Hrvatskoj. Glavni izvori radioaktivne kontaminacije Jadranskog mora jesu fallout (radioaktivni ispadak) prouzročen atmosferskim probama nuklearnog oružja te čornobiljska nesreća. Godine 2005. koncentra...

  13. Na-Gd phosphate glasses for scintillators

    Czech Academy of Sciences Publication Activity Database

    Nitsch, Karel; Cihlář, Antonín; Rodová, Miroslava

    Bratislava: x, 2005 - (Koman, M.; Mikloš, D.), s. 56 ISBN 80-89088-42-2. [Development of Materials Science in Research and Education - DMS -RE 2005 /15./. Kežmarské Žĺaby (SK), 05.09.2005-09.09.2005] R&D Projects: GA AV ČR IAA2010304 Institutional research plan: CEZ:AV0Z10100521 Keywords : Ce-doped Na-Gd phosphate glasses * radioluminescence * thermal properties Subject RIV: BM - Solid Matter Physics ; Magnetism

  14. VPLIV STILOV VODENJA NA MOTIVACIJO ZAPOSLENIH

    OpenAIRE

    Varžič, Andrej

    2015-01-01

    Teoretična izhodišča: Izhodišče v teoretičnem delu je bila strokovna literatura priznanih domačih in tujih avtorjev. Uporabili smo deskriptivno metodo podajanja snovi. V teoretičnem delu smo opisali osnove managementa, njegove opredelitve, ravni in funkcije managementa. Dotaknili smo se tudi pridobitnih in nepridobitnih organizacij ter definirali razlike med njima. Nadalje smo predstavili proces vodenja, kjer smo opredelili vodenje, njegove sestavine in temeljne sposobnosti, ki so potrebne za...

  15. Respiratorna funkcija radnica na proizvodnji slastica

    OpenAIRE

    Žuškin, E.; Mustajbegović, J.; Kanceljak, B; Dečković-Vukres, V.; Turčić, N.

    1993-01-01

    Respiratorni simptomi i ventilacijska funkcija pluća ispitivani su u 259 radnica na preradi slastica i 65 radnica neizložene kontrolne skupine. Većina kroničnih respiratornih simptoma bila je viša u izloženih nego u radnica kontrolne skupine, osobito u izloženosti brašnu, talku i škrobu te parama kiselina i etilnog alkohola. Utvrđena je visoka prevalencija akutnih simptoma koji se razvijaju tijekom radne smjene, osobito kašalj, dispneja, pečenje i suhoća grla te iritacija očiju. U svim skupin...

  16. Reakcije preosjetljivosti na jodne kontrastne medije

    OpenAIRE

    Plazonić, Željko; Batinac, Tanja; Bukvić, Marija

    2016-01-01

    Jodni kontrastni mediji uporabljuju se pri rentgenskim postupcima te mogu izazvati neposredne i odgođene reakcije preosjetljivosti. Zbog njihove povećane primjene, reakcije preosjetljivosti također su u porastu. Nakon uvođenja neionskih, niskoosmolarnih kontrastnih medija, smanjio se broj reakcija preosjetljivosti, no moguće teške reakcije, kao što je anafilaksija, i dalje su ozbiljan problem. Radiolozi i kardiolozi trebaju imati na umu da dosad neizloženi pacijenti mogu već imati razvijenu o...

  17. VPLIV MEDIJEV NA GIBALNO DEJAVNOST OTROK

    OpenAIRE

    Bodner, Natalija

    2012-01-01

    Diplomsko delo z naslovom Vpliv medijev na gibalno dejavnost otrok je teoretično in predstavlja spremembe, ki jih mediji prinašajo v gibanje otrok. V okviru gibanja so predstavljene gibalne sposobnosti otrok in gibalna dejavnost oziroma aktivnost otrok. Razložen je pomen gibanja za otroke, tako v naravi kot tudi skozi igro, ter katera dejavnost je še zlasti pomembna, ko govorimo o gibanju in ukvarjanju s športom otrok in malčkov. Predstavljene so prednosti, ki jih gibanje prinaša, in kakšen ž...

  18. Uloga spola u osjetljivosti na oksidacijski stres

    OpenAIRE

    Marotti, Tatjana; Sobočanec, Sandra; Mačak-Šafranko, Željka; Šarić, Ana; Kušić, Borka; Balog, Tihomir

    2010-01-01

    Proces starenja povezuje se s poremećajem u ravnoteži stvaranja slobodnih radikala i odgovarajuće «obrane» koju omogućuju antioksidansi. Smatra se da su oksidacijski procesi i antioksidacijska obrana spolno vezane kategorije. U svojim istraživanjima utvrdili smo da 60% miševa muškog spola u starijoj dobi spontano obolijeva od hepatocelularnih karcinoma, dok ženke iste dobi od toga ne obolijevaju. S obzirom na povezanost oksidacijsko-antioksidacijskih procesa sa spolom ispitali smo navedene pa...

  19. The NA62 GigaTracker

    CERN Document Server

    Perrin-Terrin, Mathieu

    2015-01-01

    The GigaTracker is an hybrid silicon pixel detector built for the NA62 experiment aiming at measuring the branching fraction of the ultra-rare kaon decay K + ! p + n ̄ n at the CERN SPS. The detector has to track particles in a beam with a flux reaching 1.3 MHz/mm 2 and provide single-hit timing with 200ps RMS resolution for a total material budget of less than 1.5 X 0 . The tracker comprises three 60.8mm 27mm stations installed in vacuum ( 10 ...

  20. Sorption of Cadmium on Na-Bentonite

    International Nuclear Information System (INIS)

    The sorption of Cd radionuclide into Na-bentonite as candidate for buffer material in the radioactive waste disposal system has been performed. Cadmium was used for this study as a model for bivalence elements. Batch experiment was adopted to study sorption isotherm, influence of carbonate and influence of EDTA. In a simple media, pure water, Cd was retained with a high affinity. Two stages Freundlich sorption isotherm was shown, with high coefficient distribution and sorption capacities. It is shown that the presence of carbonate in solution was not affect significantly to the sorption. While the presence of EDTA, decrease the distribution coefficient value. (author)

  1. Ensino de geometria descritiva: inovando na metodologia

    Directory of Open Access Journals (Sweden)

    Regina Coeli Moraes Kopke

    2001-03-01

    Full Text Available Com base na observação, durante anos de magistério superior, na área de desenho, dos alunos de Engenharia, Matemática, Arquitetura e Artes, quanto às dificuldades encontradas por eles no aprendizado de desenho, em especial da Geometria Descritiva, é que nos propusemos, em 1999, lecionar essa disciplina para os cursos de Arquitetura e Artes, adotando uma metodologia diferente da convencional, para despertar, no aluno, o gosto pela disciplina e o desenvolvimento de uma habilidade pouco trabalhada na escola: a visão espacial. Mostrar para os alunos que essa disciplina não é difícil, mas apenas diferente daquilo que estudaram até então, tornou-se nossa meta. A visão espacial é uma habilidade mental localizada no lado direito do cérebro e, assim, quanto mais lúdica for esta aprendizagem, será mais bem assimilada. A proposta é iniciada no sentido de se trabalhar primeiro com sólidos: neles estarão os pontos, retas e planos normalmente abordados na metodologia convencional, nessa ordem. Como conclusão, tem-se que o importante é ressaltar o grande avanço que a Geometria Descritiva traz para quem quer representar graficamente qualquer coisa. Onde há planejamento, projeto e representação gráfica, aí estará a Geometria Descritiva.During many years observing the teaching of design at the Engineering, Mathematics, Architeture and Arts courses, we can note the difficulties of the students to learn it, specially the descriptive geometry. Because of that, we decided to teach this discipline to the Architeture and Arts courses, using a new metodology to make the students motivated to study and to learn, and trying to develop their their spatial vision. We want to show to the students that this discipline is not so difficult as they think, but show them that is only different. The spatial vision is a mental skill found at the right side of the brain and the more soft the learning is, the more it is assimilated by the brain. The

  2. DESENVOLVIMENTO MORAL E INDISCIPLINA NA ESCOLA

    Directory of Open Access Journals (Sweden)

    Rita Melissa Lepre

    2009-12-01

    Full Text Available O presente artigo configura-se como uma reflexão acerca da indisciplina e suas possíveis causas. Para debater sobre o assunto apresentamos a teoria do desenvolvimento moral de Jean Piaget e articulamos suas descobertas com a questão da indisciplina na escola. São feitas, ainda, reflexões sobre o ambiente em que nossas crianças encontram-se inseridas por, pelo menos, cinco horas diárias.

  3. Strojni vid na masivno vzporedni vgradni arhitekturi

    OpenAIRE

    TUŠAR, GREGOR

    2015-01-01

    Zaradi stalnega večanja potreb po računski moči, se poleg klasičnih razvijajo novi pristopi računanja. Za reševanje računalniških problemov se ob običajnih procesorjih vedno pogosteje uporabljajo modernejše masivno vzporedne arhitekture. V delu je predstavljen kratek zgodovinski pregled razvoja in njihovih značilnosti. Opisane so teoretične zakonitosti in omejitve. V drugem delu je prikazan praktični primer aplikacije industrijskega strojnega vida in meritve hitrosti določenih funkcij na...

  4. Vliv rotace pneumatiky na aerodynamiku automobilu

    OpenAIRE

    Oboňa, Matúš

    2015-01-01

    Cieľom tejto bakalárskej práce je popis vplyvu rotácie pneumatiky na aerodynamiku automobilu. Popisuje rozdiely medzi zjednodušenými tvarmi pneumatík obvykle používanými pre CFD a realistickým tvarom pneumatiky. V práci je ďalej analyzovaný vplyv jednotlivých prvkov dezénu a ich vzájomná interakcia, vplyv rôznych pneumatík a rôznych typov karosérii.

  5. As redes sociais online na hotelaria

    OpenAIRE

    Cantinho, Gonçalo Molarinho Reis

    2016-01-01

    Dissertação de Mestrado, Direção e Gestão Hoteleira, Escola Superior de Gestão, Hotelaria e Turismo, Universidade do Algarve, 2016 As empresas hoteleiras deparam-se, na atualidade, com um mercado cada vez mais competitivo e com as novas tecnologias da informação e comunicação, nomeadamente, a internet e a Web 2.0. que criaram novas oportunidades para a indústria hoteleira, entre as quais se destacam os sites de redes sociais, que permitem aos clientes estarem cada vez mais informados e mai...

  6. AVTOMATIZACIJA VODENJA DOKUMENTACIJE O DELU NA PROJEKTIH

    OpenAIRE

    Jurman Golja, Dunja

    2009-01-01

    Namen diplomske naloge je predstaviti primer uporabe in prilagoditve odprtokodne rešitve za vodenje projektov. Podjetje ComCom d.o.o. se ukvarja s programiranjem, njihovo delo pa je pretežno projektno organizirano, zato je v nalogi predstavljen projektni način dela, opisana je kratka zgodovina odprte kode, njene prednosti in slabosti ter programski jezik Python, v katerem je tudi napisana spletna rešitev Trac za vodenje projektov. S predstavljeno rešitvijo smo želeli podjetju ComCom d.o.o....

  7. Probing luminescence centers in Na rich feldspar

    DEFF Research Database (Denmark)

    Prasad, Amit Kumar; Lapp, Torben; Kook, Myung Ho;

    2016-01-01

    In contrast to the detailed investigations on the dosimetric electron trap in feldspar only little has been done to understand the luminescence centers. We use a comparison of multiple spectroscopic techniques, site selective photoluminescence spectroscopy and time resolved measurements to further...... our understanding of the luminescence mechanisms and recombination sites, in a sample of Na rich plagioclase feldspar (oligoclase). Both the UV and violet–blue emissions show resonant excitations arising from a distribution of energy levels. We propose, contrary to the general understanding...

  8. Sindromi prenaprezanja na potkoljenici i stopalu

    OpenAIRE

    SMERDELJ, MIROSLAV; Madjarević, Mladen; OREMUŠ, KREŠIMIR

    2002-01-01

    U radu autori opisuju i objašnjavaju nastanak bolnih sindroma u području potkoljenice i stopala, vezanih uz profesiju odnosno sportsku aktivnost. Iznose se zapažanja i iskustva iz svakodnevne liječničke prakse, a i podaci iz novije medicinske literature. Značenje se daje liječenju koje je obično konzervativno, a od kirurških metoda naglasak se daje na nove manje invazivne metode. U radu su opisani najčešći sindromi prenaprezanja u području potkoljenice kao što su trkačka potkoljenica, sindrom...

  9. Centralni nadzorni sistem na medicinski fakulteti

    OpenAIRE

    Kovačič, Matej

    2015-01-01

    V diplomski nalogi obravnavamo problem postavitve in delovanja centralnega nadzornega sistema (CNS) na Inštitutu za biokemijo in Inštitutu za biologijo celice Univerze v Ljubljani Medicinske fakultete. CNS povezuje sistem splošnega prezračevanja ter prezračevanja čistih prostorov, ogrevanja in hlajenja, razsvetljave, merjenja porabe električne energije ter sistem odklepanja vrat interlock. Pri tem so opisani posamezni sistemi različnih proizvajalcev, ki so povezani v skupno komunikacijsko omr...

  10. ANALIZA ISPLATIVOSTI UGRADNJE TURBOGENERATORA NA BROD

    OpenAIRE

    Bernečić, Dean; Orović, Josip

    2011-01-01

    U radu su prikazani rezultati provedene simulacije i istraživanja isplativosti ugradnje turbogeneratora na brod. Analiza je provedena primjenom NOR Controlovog simulatora za simulaciju brodskog postrojenja tankera za prijevoz sirove nafte. Simulirana je proizvodnja električne energije s turbogeneratorom ili s dizelskim generatorom. Analiza početnih investicijskih troškova provedena je anketom s proizvođačem brodskih generatora pare te s dobavljačima turbo i dizelskih generatora pri čemu su se...

  11. Cidade-ciborgue: a cidade na cibercultura

    OpenAIRE

    André Lemos

    2008-01-01

    As cidades contemporâneas passam por transfigurações importantes com o advento das novas tecnologias da comunicação e informação e, embora toda cidade seja um artefato complexo composto por diversas redes materiais e espirituais (Saint Simon), podemos ver as atuais cidades como uma cidade-ciborgue. O objetivo deste artigo é descrever e analisar as principais transformações pelas quais passa o espaço urbano na atual cibercultura. Torna-se urgente compreender as transfo...

  12. Da mulher na Bíblia

    Directory of Open Access Journals (Sweden)

    Jacó Guinsburg

    2013-05-01

    Full Text Available Este artigo discute a figura e a representação da mulher na Bíblia. Elas são multidão no relato bíblico. Desde Eva, a cada página surge um vulto de mulher. Virtuoso ou pecador, desalmado ou abnegado, terno ou tirânico, ele suscita, hoje como outrora, a impressão viva de um temperamento, de um gesto, de um sentimento. O jogo sutil da psicologia e das motivações femininas, das suas relações com o mundo masculino, continua palpitando nas heroínas das Escrituras.

  13. impacto na saúde oral

    OpenAIRE

    Silva, Bruna Loureiro Oliveira de Sousa e

    2012-01-01

    Os distúrbios alimentares traduzem-se em comportamentos, quer pela falta, quer pelo excesso da ingestão de alimentos O crescente aumento destes distúrbios, nomeadamente a obsessão pelos corpos magros, relaciona-se com o impacto que os media tem na sociedade, uma vez que a magreza é vista como mecanismo de atração sexual e mecanismo de integração social. Das desordens alimentares fazem parte a anorexia nervosa, a bulimia nervosa e a obesidade. Ao contrário da obesidade, a anorexia ne...

  14. Osvrt na razvoj sestrinstva u Koprivnici

    OpenAIRE

    Švarc, Krešimir; Švarc Janjanin, Sanja

    2007-01-01

    Nakon osvrta na prvobitnu skrb za oboljele, za koju su bile zadužene nekvalificirane osobe, opisuje se bitna promjena u njezi dolaskom prvih Časnih sestara milosrdnica i njihova velika važnost. Slijedi dolazak i prvih medicinskih sestara te njihov rad uz krevet bolesnika, ali i njihova prva djelovanja u preventivnim aktivnostima. Posebno je obrađena ličnost m. s. Marije Brozović te njezin rad u Školskoj poliklinici, poslije osnivačice i prve ravnateljice Bolničarske škole, zatim glavne sestre...

  15. Vpliv verske prakse na zdravje ljudi

    OpenAIRE

    Petak, Kornelija Kristina

    2013-01-01

    Poznavanje različnih religij, in njihovih stališč do zdravja omogoča zdravstvenim delavcem lažje komuniciranje s pacienti ter pripomore k njihovi celostni obravnavi. Namen diplomskega dela je predstaviti odnos islama, judovstva in krščanstva do zdravega življenjskega sloga ter ugotoviti, kakšen vpliv imajo prakse teh religij na zdravje ljudi. Diplomsko delo je teoretično, uporabili smo deskriptivno metodo dela. S pregledom domače in tuje literature, dostopnih elektronskih virov ter rezultatov...

  16. ORGANIZIRANJE IN PROMOVIRANJE TURIZMA NA PTUJSKEM

    OpenAIRE

    Mešl, Mitja

    2011-01-01

    Turizem predstavlja pomembno razvojno in poslovno priložnost za Ptuj. Potrebno je razumeti novo vlogo strategije razvoja turizma, poznati svetovne trende, si zadati novo vizijo in pričeti z izvajanjem ukrepov za uresničevanje postavljenih ciljev. Postaja dejavnost, ki omogoča razvoj, zaposlovanje, zaslužek in socialno varnost, predvsem, če upoštevamo, da večina dejavnosti sodeluje v turistični ponudbi. S takim pogledom pa ima vsak kraj možnost za večji razvoj turizma. Ptuj, naše najstarejš...

  17. Necrose Intestinal na Criança

    OpenAIRE

    Martins, P.; Goulão, J.; Duarte, R

    2000-01-01

    O termo necrose intestinal traduz exclusivamente um conceito anatomopatológico e clínco, e implica sempre um isquémia instestinal oclusiva ou não. A enterocolite necrosante, em sentido lato, implica uma isquémia intestinal não oclusiva associada a um mecanismo infeccioso. O factor desencadeante da necrose é, por vezes, difícil de determinar. A enterocolite necrosante ocorre em 90% dos casos em recém-nascidos prematuros, sendo mesmo frequente no recém-nascido de termo e rara na crança mais vel...

  18. NaCl-preferring NZB/B1NJ Mice and NaCl-avoiding CBA/J Mice Have Similar Amiloride Inhibition of Chorda Tympani Responses to NaCl

    OpenAIRE

    Ninomiya, Yuzo; Bachmanov, Alexander A.; Yatabe, Akira; Gary K Beauchamp

    1998-01-01

    Integrated chorda tympani nerve responses to NaCl were studied in two mouse strains, an NaCl-preferring NZB/B1NJ and an NaCl-avoiding CBA/J. The NaCl responses of both strains had similar magnitude and were suppressed by amiloride to a similar extent. This suggests that peripheral gustatory responsiveness to NaCl is not the only mechanism underlying mouse strain variation in NaCl acceptance.

  19. Apical Na+ permeability of frog skin during serosal Cl- replacement.

    Science.gov (United States)

    Leibowich, S; DeLong, J; Civan, M M

    1988-05-01

    Gluconate substitution for serosal Cl- reduces the transepithelial short-circuit current (Isc) and depolarizes short-circuited frog skins. These effects could result either from inhibition of basolateral K+ conductance, or from two actions to inhibit both apical Na+ permeability (PapNa) and basolateral pump activity. We have addressed this question by studying whole-and split-thickness frog skins. Intracellular Na+ concentration (CcNa) and PapNa have been monitored by measuring the current-voltage relationship for apical Na+ entry. This analysis was conducted by applying trains of voltage pulses, with pulse durations of 16 to 32 msec. Estimates of PapNa and CcNa were not detectably dependent on pulse duration over the range 16 to 80 msec. Serosal Cl- replacement uniformly depolarized short-circuited tissues. The depolarization was associated with inhibition of Isc across each split skin, but only occasionally across the whole-thickness preparations. This difference may reflect the better ionic exchange between the bulk medium and the extracellular fluid in contact with the basolateral membranes, following removal of the underlying dermis in the split-skin preparations. PapNa was either unchanged or increased, and CcNa either unchanged or reduced after the anionic replacement. These data are incompatible with the concept that serosal Cl- replacement inhibits PapNa and Na,K-pump activity. Gluconate substitution likely reduces cell volume, triggering inhibition of the basolateral K+ channels, consistent with the data and conclusions of S.A. Lewis, A.G. Butt, M.J. Bowler, J.P. Leader and A.D.C. Macknight (J. Membrane Biol. 83:119-137, 1985) for toad bladder. The resulting depolarization reduces the electrical force favoring apical Na+ entry. The volume-conductance coupling serves to conserve volume by reducing K+ solute loss. Its molecular basis remains to be identified. PMID:2458472

  20. Aspectos valorizados por porfissionais de enfermagem na higiene pessoal e na higiene corporal do paciente

    Directory of Open Access Journals (Sweden)

    Elóide André Oliveira

    2003-10-01

    Full Text Available Survey descritivo, com o qual se objetivou identificar que aspectos da higiene corporal são valorizados pelos componentes da equipe de enfermagem, na higiene corporal pessoal e na higiene corporal do paciente. A pesquisa foi desenvolvida em oito instituições públicas de saúde e a amostra foi composta por 126 profissionais de enfermagem, correspondendo a 12,8% do total de 986 componentes das equipes de enfermagem destas instituições. Na higiene corporal pessoal, chamou a atenção o fato de que os cuidados com as unhas e com os cabelos tenham suplantado, no número de citações dos profissionais de enfermagem, aspectos básicos como o cuidado com as mãos. Na higiene corporal do paciente, o banho foi o aspecto considerado mais importante pelas três categorias profissionais; a higiene oral, pelas(os enfermeiras(os e auxiliares de enfermagem; e as unhas, pelas(os enfermeiras(os e técnicas(os de enfermagem.

  1. Decomposition Kinetics of Titania Slag in Eutectic NaOH-NaNO3 System

    Science.gov (United States)

    Wang, Dong; Wang, Zhi; Qi, Tao; Wang, Lina; Xue, Tianyan

    2016-02-01

    The decomposition kinetics and mechanism of titania slag in eutectic NaOH-NaNO3 system were studied in the temperature range 623 K to 723 K (350 °C to 450 °C). Decomposed products were examined using X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy. It has been identified that the main product is Na2TiO3 and the decomposition kinetics of titania slag followed a shrinking unreacted core model. It is proposed that the chemical reaction process was the rate determining step with apparent activation energy of 62.4 kJ/mol. NaNO3 was mainly acted as oxygen carrier and mass transport agent to lower the viscosity of the system. The purity of TiO2 obtained in the product was up to 99.3 pct. A flow diagram to produce TiO2 and to recycle the media was proposed.

  2. Mercosul educativo na carreira de Enfermagem

    Directory of Open Access Journals (Sweden)

    Roseli Schmoeller

    2012-10-01

    Full Text Available O Mercosul, instituído com vistas à integração econômica, política, social e cultural entre os países membros, atualmente destaca-se pelas estratégias integrativas de âmbito educacional. Este artigo aborda os movimentos acerca da formação acadêmica dos cursos de Enfermagem e o trajeto histórico de integração educacional, apresentando o Sistema de Acreditação dos Cursos Universitários do Mercosul, o ARCU-SUL, além dos setores responsáveis por esse processo e as perspectivas para a Enfermagem nos países do Mercosul. Entendemos que para o desenvolvimento de profissionais críticos, reflexivos e com compromisso político-social, é fundamental investir na formação e na qualidade dos centros de ensino em Enfermagem.

  3. Vinhos, Turismo e Pluriatividade na Agricultura

    Directory of Open Access Journals (Sweden)

    Hernanda Tonini

    2013-06-01

    Full Text Available A gastronomia, além de ter importante relação com a economia, é uma forma expressiva da cultura dos indivíduos, desde o tipo de alimentos cultivados até a maneira de seu preparo e consumo. O presente artigo propõe-se a analisar a relação entre o enoturismo – centralizado na existência do vinho enquanto elemento gastronômico – e o fenômeno da pluriatividade na agricultura familiar, vista nos últimos anos como alternativa positiva para sua reprodução econômica e social. O fluxo turístico em regiões vitivinícolas gera novas oportunidades de trabalho e faz com que agricultores e suas famílias dividam a mão de obra agrícola, até então direcionada ao cultivo da uva e outros alimentos para subsistência, com atividades não agrícolas – como o artesanato, o acolhimento de visitantes em pousadas, a atuação em restaurantes, entre outras – como chance de subsistência. Este panorama transforma as realidades do mundo rural, alterando a relação do agricultor com a produção de alimentos e a forma como o mesmo os utiliza, além de reestruturar o ambiente sociocultural no seu entorno.  

  4. Cenová politika na Internetu

    OpenAIRE

    Lohr, Karel

    2006-01-01

    Práce porovnává cenovou politiku na Internetu s cenovou politikou v klasickém pojetí v kamenných obchodech. Popisuje vliv internetového prostředí na tradiční nástroje cenové politiky. Rozebírá nejdůležitější faktory ovlivňující tvorbu cen a analyzuje cenové strategie. Předmětem práce jsou také nástroje cenové politiky, které jsou specifické pro Internet (dynamické ceny, komparativní nakupování apod.). Práce obsahuje některé příklady z praxe a zabývá se také elektronickými platebními systémy (...

  5. Ensinar e aprender na Bíblia

    Directory of Open Access Journals (Sweden)

    Tércio Machado Siqueira

    2011-06-01

    Full Text Available Ensinar e aprender na BíbliaTeaching and learning in the BibleEnseñanza y el aprendizaje de la BibliaRESUMOEste artigo analisa o conceito de ensinar e aprender na Bíblia a partir das expressões hebraicas lamad e yarah, para, posteriormente, discutir a possibilidade de uma pedagogia libertadora e como aplicá-la, tendo como ponto de partida o ensino no Antigo Testamento.ABSTRACTThis article analyzes the concept of teaching and learning in the Bible based on the Hebrew expressions lamad and yarah, to then discuss the possibility of a liberating pedagogy and how to apply it, taking as a starting point teaching in the Old Testament.RESUMENEn este artículo se analiza el concepto de enseñanza y aprendizaje en la Biblia sobre la base de las expresiones hebreas lamad y yarah, para discutir, entonces, la posibilidad de una pedagogía liberadora y cómo aplicarla, tomando como punto de partida la enseñanza en el Antiguo Testamento.

  6. A LIBERDADE CRISTÃ NA PERSPECTIVA PAULINA

    Directory of Open Access Journals (Sweden)

    Edir Aparecido Morato

    2011-06-01

    Full Text Available No Antigo Testamento, os acontecimentos que marcaram a libertação do povo de Israel, no Egito, forneceram uma referência permanente para que o povo pudesse compreender, orientar e julgar todos os acontecimentos de sua história à luz da Palavra de Deus. No Novo Testamento, o novo êxodo, vislumbra a liberdade cristã: segundo Paulo, a libertação oferecida por Cristo liberta da visão legalista de justificar-se e de se alcançar a salvação por meio da observância de normas, em detrimento à graça divina (Gl 5,1ss. Por isso, Paulo é chamado a anunciar o evangelho do Cristo Libertador para que, na graça, todos sejam salvos; e assim hoje, os discípulos missionários de Jesus Cristo são igualmente convocados a viver na liberdade de filhos de Deus, a fim de realizar livremente seu desígnio salvífico.

  7. Stimulation of Na+/K+ ATPase activity and Na+ coupled glucose transport by β-catenin

    International Nuclear Information System (INIS)

    Research highlights: → The oncogenic transcription factor β-catenin stimulates the Na+/K+-ATPase. → β-Catenin stimulates SGLT1 dependent Na+, glucose cotransport. → The effects are independent of transcription. → β-Catenin sensitive transport may contribute to properties of proliferating cells. -- Abstract: β-Catenin is a multifunctional protein stimulating as oncogenic transcription factor several genes important for cell proliferation. β-Catenin-regulated genes include the serum- and glucocorticoid-inducible kinase SGK1, which is known to stimulate a variety of transport systems. The present study explored the possibility that β-catenin influences membrane transport. To this end, β-catenin was expressed in Xenopus oocytes with or without SGLT1 and electrogenic transport determined by dual electrode voltage clamp. As a result, expression of β-catenin significantly enhanced the ouabain-sensitive current of the endogeneous Na+/K+-ATPase. Inhibition of vesicle trafficking by brefeldin A revealed that the stimulatory effect of β-catenin on the endogenous Na+/K+-ATPase was not due to enhanced stability of the pump protein in the cell membrane. Expression of β-catenin further enhanced glucose-induced current (Ig) in SGLT1-expressing oocytes. In the absence of SGLT1 Ig was negligible irrespective of β-catenin expression. The stimulating effect of β-catenin on both Na+/K+ ATPase and SGLT1 activity was observed even in the presence of actinomycin D, an inhibitor of transcription. The experiments disclose a completely novel function of β-catenin, i.e. the regulation of transport.

  8. SPLETNO TRŽENJE NA PRIMERU MOBILNIH OPERATERJEV

    OpenAIRE

    Ribič, Janja

    2014-01-01

    V diplomski nalogi sem se odločila, da bom predstavila spletno trženje mobilnih operaterjev, ki postaja vse bolj pomembna in praktična spletna storitev, saj je pomembna oblika in vsebina spletnih tržnikov. Predstavila sem elektronsko poslovanje in spletno trženje mobilnih operaterjev. Opisala sem načine spletnega trženja, prednosti, načela in pogoje za uspešno spletno trženje.

  9. Scheelite-type NaDy(WO42

    Directory of Open Access Journals (Sweden)

    Dan Zhao

    2010-01-01

    Full Text Available The title compound sodium dysprosium(III bis[tungstate(VI], NaDy(WO42, has been synthesized under high temperature solution growth (HTSG conditions in air. The compound crystallizes with the scheelite structure and is composed of isolated WO4 tetrahedra (overline{4} symmetry with one set of bond lengths and distorted [(Na/DyO8] dodecahedra (overline{4} symmetry; occupancy ratio Na:Dy = 1:1 with two sets of bond lengths.

  10. VPLIV STILOV VODENJA NA ZADOVOLJSTVO ZAPOSLENIH V ZDRAVSTVENI NEGI

    OpenAIRE

    Janžekovič, Katja

    2012-01-01

    Dobro vodenje je kot konstantno vrhunsko delovanje, ki ima pozitive dolgoročne učinke na vse zaposlene. Vodje niso samo tisti, ki kontrolirajo druge, ampak delujejo kot vizionarji, ki pomagajo zaposlenim, da planirajo, vodijo, kontrolirajo in organizirajo svoje delo. Namen. Ugotoviti prevladujoči stil vodenja v zdravstveni negi ter proučiti vpliv različnih stilov vodenja na zadovoljstvo zaposlenih v zdravstveni negi. Raziskovalna metodologija. Raziskava je temeljila na deskriptivni (...

  11. Utjecaj novih tehnologija na funkciju odnosa s javnostima

    OpenAIRE

    Tafra Vlahović, Majda

    2007-01-01

    Grunigovu teoriju o situacijskoj javnosti treba razmotriti u uvjetima novih komunikacijskih tehnologija. Cozier i Witmer (2001.) navode da PR praktičari ne smiju nove tehnologije smatrati jednostavnom mogućnošću stvaranja obaviještene javnosti. Polazeći od pristupa temeljenog na informaciji, sudjelovanje javnosti pojavljuje se tek na kraju komunikacijskog procesa. Oni vjeruju da je stvarno pitanje zapravo sudjelovanje javnosti, te upotreba i reagiranje na nove komunikacijske...

  12. Razvoj suvremenog menadžmenta trgovine na malo

    OpenAIRE

    Segetlija, Zdenko

    2009-01-01

    Razvoj koncentracije u trgovini na malo doveo je do daljnjih promjena u njezinoj strukturi te, u skladu s tim, i do promjena u upravljanju gospodarskim subjektima u trgovini na malo. S tim u svezi mijenja se i dosadašnja paradigma marketinga trgovine na malo, budući da sve važnijim postaje oblikovanje asortimana temeljem programa category managementa i drugih oblika vertikalnoga marketinga. S druge pak strane, osim poznavanja zakonitosti razvoja novih oblika poslovnih jedinica, no...

  13. RAZVOJ SODOBNIH SPLETNIH APLIKACIJ NA OSNOVI ODPRTOKODNEGA OGRODJA LARAVEL

    OpenAIRE

    Vetršek, Rok

    2015-01-01

    V diplomskem delu sta podrobno predstavljeni odprtokodni ogrodji Bootstrap in Laravel. Prvo omogoča enostavno in hitro oblikovanje odzivnih spletnih aplikacij, drugo pa je eno od vodilnih ogrodij, ki temeljijo na jeziku PHP in MVC arhitekturi. Uporaba ogrodji je prikazana z izdelavo spletne aplikacije, ki omogoča vodenje preprostih zapiskov in deljenje le teh v obliki samo za branje. Aplikacija je dinamična in se prilagaja velikosti zaslona naprave, na kateri si jo ogledujemo. Iz pridobljenih...

  14. Neutron diffraction studies of the Na-ion battery electrode materials NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3

    Science.gov (United States)

    Yahia, H. Ben; Essehli, R.; Avdeev, M.; Park, J.-B.; Sun, Y.-K.; Al-Maadeed, M. A.; Belharouak, I.

    2016-06-01

    The new compounds NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 were synthesized by sol-gel method and their crystal structures were determined by using neutron powder diffraction data. These compounds were characterized by galvanometric cycling and cyclic voltammetry. NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 crystallize with a stuffed α-CrPO4-type structure. The structure consists of a 3D-framework made of octahedra and tetrahedra that are sharing corners and/or edges generating channels along [100] and [010], in which the sodium atoms are located. Of significance, in the structures of NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 a statistical disorder Ni2+/Cr3+ was observed on both the 8g and 4a atomic positions, whereas in NaCoCr2(PO4)3 the statistical disorder Co2+/Cr3+ was only observed on the 8g atomic position. When tested as negative electrode materials, NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 delivered specific capacities of 352, 385, and 368 mA h g-1, respectively, which attests to the electrochemical activity of sodium in these compounds.

  15. Razvoj polimernih nanokompozita na osnovi slojevitih dvostrukih hidroksida

    OpenAIRE

    Rogošić, M.; Matusinović, Z.; Šipušić, J.

    2009-01-01

    Opisana je priprava i karakterizacija polimernih nanokompozita na osnovi slojevitih dvostrukih hidroksida (LDH). Pripravljen je novi razred punila na osnovi tetrakalcijeva aluminata hidrata, modificiranog benzoatnim (LDH-B) ili undecenoatnim (LDH-U) anionima. Punila su karakterizirana metodama rendgenske difrakcije (XRD) i infracrvene spektroskopije (FTIR) i potvrđena je ugradnja organskih aniona kao modifikatora i povećanje međuslojnog razmaka u odnosu na izvorno punilo. Punila su umješavana...

  16. INTERNET I NASTAVA ENGLESKOGA JEZIKA NA TEHNIČKIM FAKULTETIMA

    OpenAIRE

    Ferčec, Ivanka; Šoštarić, Blaženka

    2006-01-01

    Ovaj rad raspravlja o utjecaju Interneta na stavove studenata prema engleskome jeziku kao nestručnome kolegiju na tehničkome fakultetu kroz sljedeća pitanja: a) je li dominantnost engleskoga na Internetu osvijestila studente o nužnosti takvoga kolegija tijekom cijeloga studija, i b) pomažu li studentima postojeći oblici i sadržaji nastave engleskoga jezika u uporabi Interneta.

  17. RAZVOJ APLIKACIJE PRETOČNEGA VIDEA NA MOBILNEM TELEFONU

    OpenAIRE

    Horvat, Jernej

    2012-01-01

    Diplomsko delo obravnava prenos video signala iz mobilnega telefona na TV. Prenos poteka preko Wi-Fi omrežja. Na mobilnem telefonu je nameščena ustrezna Android aplikacija, ki omogoča direkten prenos video signala in nalaganje na TV sprejemnik. Pomemben dejavnik, ki prispeva, da je ta proces mogoč, je sistem IMS (IP multimedijski podsistem), ki predstavlja omrežja naslednje generacije.

  18. RAZVOJ APLIKACIJE ZA SLEDENJE POTI NA MOBILNI PLATFORMI ANDROID

    OpenAIRE

    Šel, Bojan

    2011-01-01

    V diplomskem delu smo opisali stanje na trgu pametnih telefonov in njihovih operacijskih sistemov. Med operacijskimi sistemi smo podrobneje predstavili Android mobilno platformo, na kateri smo kreirali aplikacijo. Podrobneje smo predstavili razvojno okolje Eclipse in pametni telefon Motorola Milestone, ki smo ju uporabljali pri kreiranju aplikacije za sledenje poti na mobilni platformi Android preko GPS vmesnika. Implementirali smo aplikacijo, ki omogoča prikaz zemljevida z označitvijo opravl...

  19. NaIrO3 - A pentavalent post-perovskite

    OpenAIRE

    Bremholm, M.; Dutton, S. E.; Stephens, P.W.; Cava, R. J.

    2010-01-01

    Sodium iridium(V) oxide, NaIrO3, was synthesized by a high pressure solid state method and recovered to ambient conditions. It is found to be isostructural with CaIrO3, the much-studied structural analogue of the high-pressure post-perovskite phase of MgSiO3. Among the oxide post-perovskites, NaIrO3 is the first example with a pentavalent cation. The structure consists of layers of corner- and edge-sharing IrO6 octahedra separated by layers of NaO8 bicapped trigonal prisms. NaIrO3 shows no ma...

  20. Dejavniki psihološkega nasilja na delovnem mestu

    OpenAIRE

    Ilc, Teja

    2011-01-01

    Raziskave na področju delovnih razmer kažejo, da je danes pereč problem ravno psihološko nasilje na delovnem mestu. Posebna oblika psihološkega nasilja na delovnem mestu je mobing, s katerim se v praksi srečujemo vsak dan, vendar se ga pogosto ne zavedamo. Namen magistrske naloge je pojasniti pojem in pomen mobinga v delovnih organizacijah, poiskati možne vzroke in posledice, ki vplivajo na ta pojav, ter predlagati rešitve. Poznavanje mehanizmov, ki povzročajo mobing, njegovih vzrokov in...

  1. Synthesis of NaA zeolite from kaolin source

    Institute of Scientific and Technical Information of China (English)

    Qian MIAO; Zhihui ZHOU; Jianhua YANG; Jinming LU; Shiwei YAN; Jinqu WANG

    2009-01-01

    In this work, zeolite NaA was successfully synthesized by a hydrothermal method using kaolin as a combined source for silica and alumina. Zeolite NaA with high static water adsorption was synthesized from the low-cost raw material, kaolin, and the reaction parameters were optimized. Metakaolin was obtained by calcining kaolin at temperatures ranged from 953 K to 1173 K. The synthesis mixture was pre-crystallized at 343 K and crystallized at 373 K successively. Zeolite NaA was obtained, which was confirmed by SEM, XRD and the water adsorption analysis. The optimized metakaolinization temperature was found at 973 K. The influence of Na2O/SiO2 molar ratio, pre-crystallization time and seed on the crystal- lization of NaA zeolite was investigated. A thorough mixing of metakaolin and NaOH solution was favourable for the nucleation/crystallization rate. The obtained NaA zeolite under the optimized conditions shows excellent crystallinity and static water adsorption of 28.0wt-%,which was higher than 25.9 wt-% of the commercial NaA zeolite. Kaolin was suggested to be a feasible and economical raw material for the practical industrial applications for NaA zeolite.

  2. KAKOVOST PRENOSA SIGNALA NA BREZŽIČNI NAPRAVI MIKROTIK

    OpenAIRE

    Šilak, Andraž

    2015-01-01

    V diplomskem delu smo izvedli analizo vpliva vremena na prenos brezžičnega signala. V delu je predstavljen teoretični del prenosa signalov in njihovi standardi ter vpliv vremena na njihov prenos na napravah MikroTik. Najprej je predstavljena teoretična podlaga prenosov signalov. Nato smo predstavili standarde, ki jih uporabljamo pri prenosu teh signalov. Predstavili smo tudi protokol SNMP, ki nam je omogočil nadzor. V nadaljevanju so predstavljeni rezultati dejanskih testov, ki smo jih opravi...

  3. RAVNANJE Z NEVARNIMI SNOVMI NA PETROLOVIH BENCINSKIH SERVISIH

    OpenAIRE

    Pirc, Dejan

    2013-01-01

    V diplomskem delu je opredeljena problematika nevarnih snovi ter njihovih škodljivih učinkov na zdravje ljudi in na okolje. Opisan je tudi pojav nevarnih odpadkov, ki se nanaša na probleme okoljevarstvene politike. Podane so nekatere evropske in svetovne smernice na področju ravnanja z nevarnimi snovmi, varovanja delavcev pred učinki nevarnih snovi ter varstva okolja. Navedeni in opisani so tudi slovenski zakoni, ki urejajo to področje. Natančno so tudi opisani vidiki ravnanja z nevarnim...

  4. PRIMERJAVA OGLAŠEVANJA NA GOOGLU IN FACEBOOKU

    OpenAIRE

    Janžekovič, Tjaša

    2012-01-01

    Internet pomeni na področju trženja nov tip interaktivnega oglaševanja, ki poleg oglaševanja ponuja še dvostransko komunikacijo. Oglaševanje na svetovnem spletu je v zadnjih nekaj letih najhitreje rastoči trend v oglaševanju nasploh in ima za oglaševalce veliko prednosti v primerjavi z uporabo ostalih medijskih kanalov. Namen oglaševanja na internetu je v tem, da oglaševalec pritegne čim več obiskovalcev na svojo spletno stran, kjer ponudi informacije o podjetju in njegovih izdelkih oz. stori...

  5. Komparativna procjena Interneta u odnosu na tisak i televiziju

    OpenAIRE

    Bubaš, Goran; Kermek, Dragutin

    2000-01-01

    Internet nije više novost u životu i profesionalnom radu mnogih korisnika medija, kao ni osoba koje se bave novinarstvom. Nakon nekoliko desetljeća dominacije tradicionalnih masovnih medija, Internet dovodi do bitnijih promjena u načinu na koji pojedinci ispunjavaju svoje informacijske potrebe, kao i u načinu na koji se mogu oblikovati informacije u nekom masovnom mediju. Cilj ovog istraživanja bio je utvrditi kako osobe koje su upoznate s Internetom promatraju taj novi medij u...

  6. Thermodynamic modeling of the (Al2O3 + Na2O), (Al2O3 + Na2O + SiO2), and (Al2O3 + Na2O + AlF3 + NaF) systems

    International Nuclear Information System (INIS)

    Highlights: ► We modeled Al2O3–Na2O–SiO2 and Al2O3–Na2O–AlF3–NaF using the Modified Quasichemical Model in the Quadruplet Approximation. ► This assessment includes a very thorough review of all available experimental data for Al2O3–Na2O and Al2O3–Na2O–SiO2. ► The charge compensation effect in the SiO2-rich region of the (Al2O3 + Na2O + SiO2) system is modeled with a NaAl4+ cation. ► First detailed thermodynamic modeling of the (Al2O3 + Na2O + SiO2) ternary system. ► First thermodynamic modeling at all compositions and temperatures of the (Al2O3 + Na2O + AlF3 + NaF) reciprocal oxyfluoride system. - Abstract: All available thermodynamic and phase diagram data for the condensed phases of the (Al2O3 + Na2O), (Al2O3 + Na2O + SiO2), and (Al2O3 + Na2O + AlF3 + NaF) systems have been critically assessed. Model parameters for solid solutions and a single set of parameters for the liquid solution in the binary, ternary, and ternary reciprocal systems have been optimized and permit to reproduce most of the critically reviewed experimental data. The Modified Quasichemical Model in the Quadruplet Approximation was used for the oxyfluoride (mixture of molten oxides and salts) liquid solution, which exhibits strong first-nearest-neighbor and second-nearest-neighbor short-range order. This thermodynamic model takes into account both types of short-range order as well as the coupling between them. The charge compensation effect present in the (Al2O3 + Na2O + SiO2) system was taken into account by adding a (NaAl)4+ species in the liquid solution.

  7. ODŠKODNINSKA ODGOVORNOST ZARADI MOBINGA NA DELOVNEM MESTU

    OpenAIRE

    Slatinek, Matej

    2013-01-01

    Diplomsko delo obravnava odškodninsko odgovornost zaradi mobinga na delovnem mestu. Pojav mobinga je v današnjem času vedno pogostejši, zato je potreba po dobri pravni urejenosti tega področja velika. Slovenija je trpinčenje na delovnem mestu v svojo pravno ureditev uvedla šele dokaj pozno, nekje okoli leta 2007. Tedaj je mobing uredila na različnih področjih kot so: kazensko pravo, delovno pravo in pravo človekovih pravic, glede odškodninske odgovornosti pa je žrtve mobinga napotila na splo...

  8. VPLIV MOBINGA NA USPEŠNOST PODJETJA X

    OpenAIRE

    Šinko, Renira Dominika

    2012-01-01

    Družba deluje na način, da posameznik brez sodelovanja z drugimi le težko uspe. Poleg trdnega zaupanja v svoje sposobnosti, zmožnosti in prepričanja je za doseganje začrtanih ciljev potrebna uspešna komunikacija ali kakršnakoli druga oblika interakcije z okolico. Vsakdanja težnja po dokazovanju in uspehu povzroča konkurenco, pritisk, pomanjkanje časa, to pa vodi k neuspešnemu komuniciranju, rahlja ustvarjena razmerja in ima za posledico propad posameznika. Vse bolj se nasilje na ulicah i...

  9. PRISPEVKI ZA SOCIALNO VARNOST S POUDARKOM NA ODGOVORNOSTI DELODAJALCA

    OpenAIRE

    Zupan, Tjaša

    2010-01-01

    Finančna nedisciplina na področju prispevkov za socialno varnost je v Sloveniji prisotna že vrsto let, država pa se pri ureditvi te problematike zdi nemočna. Da je dejansko stanje na področju plačila prispevkov za socialno varnost slabo, se ve, vendar pa to še ne pomeni tudi teoretično slabo zasnovanega sistema. Največji problem pri vzpostavitvi finančne discipline namreč predstavlja izvajanje sistema v praksi, kar se kaže predvsem v pomanjkanju nadzora pristojnih institucij in nekorektnem de...

  10. DISKRIMINACIJA PRI ZAPOSLOVANJU IN DELU NA PODLAGI SPOLNE USMERJENOSTI

    OpenAIRE

    Markovič, Polona

    2012-01-01

    Ustavno zagotovljena pravica do enakosti, brez kakršnegakoli razlikovanja na podlagi osebnih okoliščin, predstavlja eno izmed temeljnih človekovih pravic. Za zagotavljanje enakega obravnavanja posameznikov in različnih skupin oseb na vseh področjih družbenega življenja je neizogibno potrebna natančna zakonska opredelitev varstva pred diskriminacijo. Prepoved diskriminacije je pravno regulirana v določilih mnogih dokumentov, sprejetih na mednarodni in nacionalni ravni. Diskriminacijo lahko naj...

  11. VLOGA ETIKE PRI PREPREČEVANJU NADLEGOVANJA NA DELOVNEM MESTU

    OpenAIRE

    Sambolec, Katja

    2013-01-01

    V diplomskem seminarju smo obravnavali temo z naslovom Vpliv etike pri preprečevanju nadlegovanja na delovnem mestu. Tema o nadlegovanju na delovnem mestu, je aktualna že desetletja in glede na gospodarsko krizo, ki ji še ni videti konca, je aktualna še danes. Zaradi prenasičenosti trga s ponudniki iste branže, se posledično v posameznih podjetjih izvajajo pritiski na zaposlene, ki v različnih situacijah vodijo do nadlegovanja. Pri pisanju diplomskega seminarja smo se najprej osredotoči...

  12. RFID NA SMUČIŠČU MARIBORSKO POHORJE

    OpenAIRE

    Jurša, Aljaž

    2011-01-01

    Glavna tematika diplomske naloge, kot je razvidno iz naslova, je tehnologija RFID. RFID je kratica za »radio frequency identification« oziroma, če prevedemo v slovenščino bi to pomenilo, radio-frekvenčna identifikacija. Podrobneje bomo predstavili celotno RFID tehnologijo, ISO standarde ter RFID kontrolo kart na splošno. Od splošne predstavitve tehnologij bomo prešli na opis točno določenega sistema RFID kontrole kart na smučišču Mariborsko Pohorje, ki je plod sodelovanja med dvema uspešnima...

  13. Influenza virus neuraminidase (NA): a target for antivirals and vaccines.

    Science.gov (United States)

    Jagadesh, Anitha; Salam, Abdul Ajees Abdul; Mudgal, Piya Paul; Arunkumar, Govindakarnavar

    2016-08-01

    Influenza, the most common infectious disease, poses a great threat to human health because of its highly contagious nature and fast transmissibility, often leading to high morbidity and mortality. Effective vaccination strategies may aid in the prevention and control of recurring epidemics and pandemics associated with this infectious disease. However, antigenic shifts and drifts are major concerns with influenza virus, requiring effective global monitoring and updating of vaccines. Current vaccines are standardized primarily based on the amount of hemagglutinin, a major surface antigen, which chiefly constitutes these preparations along with the varying amounts of neuraminidase (NA). Anti-influenza drugs targeting the active site of NA have been in use for more than a decade now. However, NA has not been approved as an effective antigenic component of the influenza vaccine because of standardization issues. Although some studies have suggested that NA antibodies are able to reduce the severity of the disease and induce a long-term and cross-protective immunity, a few major scientific issues need to be addressed prior to launching NA-based vaccines. Interestingly, an increasing number of studies have shown NA to be a promising target for future influenza vaccines. This review is an attempt to consolidate studies that reflect the strength of NA as a suitable vaccine target. The studies discussed in this article highlight NA as a potential influenza vaccine candidate and support taking the process of developing NA vaccines to the next stage. PMID:27255748

  14. Vrednotenje ustreznosti postavitve gradiva na oddelku za mladino

    OpenAIRE

    Pirnat, Nataša

    2015-01-01

    Kvalitetna postavitev gradiva je ena izmed prioritet vsake knjižnice. V Sloveniji je večini knjižnic skupna UDK postavitev. Z največjimi problemi pri njeni uporabi se srečujejo najmlajši uporabniki knjižnic - otroci. Vrstilci sistema UDK so za otroke prezapleteni, zato bi bilo potrebno postavitev gradiva preoblikovati na otrokom prijazen način. V Mestni knjižnici Ljubljana so na oddelku za mladino leta 2010 oblikovali otrokom prilagojeno postavitev gradiva le na področju leposlovja, strokovno...

  15. Ocena hidroenergetskega potenciala reke Reke na lokaciji Topolc

    OpenAIRE

    Bedek, Nejc

    2015-01-01

    Izkoriščanje obnovljivih virov energije, je ključnega pomena, zaradi vse večjih potreb po električni energiji. Kljub majhni količini proizvedene električne energije v malih hidroelektrarnah imajo takšne investicije veliko drugih prednosti. Pred začetkom opravil za izgradnjo elektrarne je natančna analiza, na osnovi kakovostnih vhodnih podatkov, mesta na katerem želimo izkoriščati vodni potencial, ključnega pomena. V oceni hidroenergetskega potenciala reke Reke na lokaciji Topolc, smo določili...

  16. Utjecaj podloge za tisak na kvalitetu otiska u elektrofotografiji

    OpenAIRE

    Novaković, Dragoljub; Avramović, Darko

    2012-01-01

    U radu se predstavljaju istraživanja parametara utjecaja hrapavosti i debljine podloge na kvalitetu otisaka u elektrofotografiji. Istraživan je mehanički porast rasterske točke pri tisku i utjecaj na promjenu intenziteta sjaja u funkciji boje nanijete na različite podloge. Uzorci koji su korišteni za istraživanje tiskani su postupkom elektrofotografije na digitalnoj tiskarskoj mašini HP Indigo 4500. Korištene su tri vrste podloga za tisak: papir Fasson White Top Indi Centaure ALF606 S2030 gra...

  17. (I)Mobilidade na cidade de São Paulo

    OpenAIRE

    Raquel Rolnik; Danielle Klintowitz

    2011-01-01

    O trabalho procura deslindar a crise da mobilidade que a metrópole paulistana tem vivido na última década. Para tanto, apresenta uma análise crítica acerca dos projetos de mobilidade que foram implantados historicamente na cidade de São Paulo, focalizando em particular os investimentos e as mudanças na gestão realizados pelos poderes públicos municipal e estadual em infraestrutura viária e transporte coletivo na última década.This paper seeks to understand the mobility crisis lived by São Pau...

  18. VPLIVI NA OBISKOVANJE PREDAVANJ IN VAJ ŠTUDENTOV

    OpenAIRE

    Hiršel, Špela

    2010-01-01

    Izostajanje študentov od predavanj in vaj vzbuja v visokem šolstvu skrb in vpliva tako na učitelje, asistente, strokovne sodelavce kot tudi na študente, ki v študijskem procesu sodelujejo. Obiskanost izobraževalnega procesa je v veliki meri, ne pa v celoti, odvisna od temeljnih dejavnikov izobraževalnega procesa (izobraževanec, učitelj in vsebina izobraževanja). Na celotno obiskanost in uspešnost vplivajo med drugim tudi oblike ter metode izobraževanja, učna sredstva in pripomočki. Temeljno m...

  19. UTJECAJ PROVJERAVANJA I OCJENJIVANJA ZNANJA NA UČENJE

    OpenAIRE

    Penca Palčić, Marjana

    2008-01-01

    Posljedice loše nastave ne mogu se otkloniti tek postupcima strogoga ocjenjivanja, a osim toga, loše ocjenjivanje često deformira prednost dobre nastave. Zato na važnosti sve više dobiva provjeravanje znanja, raširenost situacija u kojima se provjeravanje odvija i promjena načina provjeravanja što posljedično utječe i na učenje. Provjeravanje i ocjenjivanje sastavni su dijelovi nastavnoga procesa. Svoju ulogu imaju tako u procesu podučavanja, kako i u procesu učenja. Način provjeravanja i ocj...

  20. ZADOVOLJSTVO ZAPOSLENIH NA JAVNEM SKLADU RS ZA KULTURNE DEJAVNOSTI

    OpenAIRE

    Fišer, Laura

    2015-01-01

    Delovno zadovoljstvo zaposlenih vpliva na njihovo uspešnost in učinkovitost. Konkurenca je na vseh področjih velika, zato organizacije od svojih zaposlenih zahtevajo tudi iznajdljivost za hitro prilagajanje okolju. Zadovoljstvo si zaposleni predstavljajo na različne načine. Nekateri si želijo boljših medsebojnih odnosov, drugi upoštevanje in uresničevanje svojih idej, tretji pohvalo in priznanje. Če organizacija želi zaposlene pripraviti do učinkovitosti in uspešnosti, mora ustvariti dobr...