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	Provedor de dados Infoteca-e (4) Rev. Econ. Sociol. Rural (1) R. Bras. Zootec. (1) Autor Abreu,Urbano Gomes Pinto de (1) CAMPOS, I. S. (1) CARVALHO, E. J. M. (1) Chaves,Leonardo Corrêa (1) EMBRAPA. Secretaria de Administracao Estrategica. (1) Ensslin,Leonardo (1) Ensslin,Sandra Rolim (1) Gomes,Eliane Gonçalves (1) Imlau,Jhonatan Munaretto (1) LEMOS, O. F. de (1) Lopes,Paulo Sávio (1) SA, C. P. de (1) SAMPAIO, N. F. (1) Santos,Heleno do Nascimento (1) Torres,Robledo de Almeida (1) Mais... Palavra-chave Avaliação de desempenho (6) Acre (1) Administração de Pessoal. (1) Amazônia Ocidental (1) Amazônia Ocidental. (1) Cooperativas de produção agropecuária (1) Cooperativas rurais (1) Eficiência (1) Embrapa Acre (1) Embrapa Rondônia (1) Human resources management. (1) Instituição de pesquisa (1) Performance evaluation (1) Pesquisa agropecuária (1) Pesquisador. (1) Planejamento estratégico (1) Planejamento. (1) Plano Diretor (1) Porto Velho (RO) (1) Progressão salarial (1) Mais... Tipo do documento Documentos (INFOTECA-E) (3) Info:eu-repo/semantics/article (2) Outras publicações técnicas (INFOTECA-E) (1) Ano 2014 (1) 2008 (1) 2007 (1) 1997 (1) 1994 (1) 1992 (1) Mais... País Brazil (6) Idioma Português (6)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 68 Primeira ... 1 2 3 4 ... Última Application of zinc to corn grown in calcareous soils Thai Agricultural Suwapan Ratanarat; Withaya Marsangsan; Tienchai Arayangkoon; Yupin Boon-ampol; Supaporn Ratanarat; Samnao Phetchawee. 4 tables Palavras-chave: Corn; Maize; Zinc; Phosphate fertilizers; Fertilizers; Calcareous soil; Yields; ข้าวโพด; สังกะสี; หินปูน; อัตราการเจริญเติบโต. Ano: 1980 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4024 Construction and use of a dialysis chamber for investigating in situ the toxicity of heavy metals on bacteria. ArchiMer Tan, T. Teflon dialysis sampling chambers have been employed to study the toxicity of ZnCl sub(2) on a cadmium-sensitive bacterium, Acinetobacter) CS 13, in an aquarium with running seawater. A concentration of 10 mg Zn super(++) l super(-1) did not influence the cell densities in the chambers, but cell densities decreased at zinc concentrations of 15 and 20 mg l super(-1). In seawater with 20 mg Zn super(++) lu-1 the bacteria accumulated zinc from 827 to 2813 mu g g super(-1) cells dry wt after 1 d. After 2 d the zinc concentration increased to 4625 mu g g super(-1) dry wt. Three chambers were filled with Acinetobacter CS 13 cells added to sterile sediment at a concentration of 1 x 10 super(8) cells ml super(-1) wet sediment. To test the security, these chambers... Tipo: Text Palavras-chave: Acinetobacter; Bacteria; Laboratory culture; Tests; Zinc; Dialysis; Toxicity; Heavy metals. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1012.pdf Méthode de dosage du cadmium, du cuivre, du plomb et du zinc dans la chair de poissons ArchiMer Auger, Dominique. An analytical technique for cadmium, copper, lead and zinc determination in fish tissue used in monitoring programmes is described. Atomic absorption spectrophotometry on nitric digested samples is performed. Tipo: Text Palavras-chave: Cadmium; Cuivre; Poisson; Plomb; Zinc; Analyse; Cadmium; Copper; Lead; Zinc; Fish; Determination. Ano: 1989 URL: https://archimer.ifremer.fr/doc/00489/60059/63343.pdf Impact Assessment of Crop and Resource Management Technology: A Case of Groundnut Production Technology Open Agri P.K.. Palavras-chave: Technology transfer; Groundnuts; Inorganic acid salts; Nutrient management; Technology; Sprinklers; Gypsum; On-farm research; Pigeonpeas; Zinc. Ano: 1998 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4664 Etude des polluants chimiques (Cu, Fe, Zn, Cd et Hg) dans les moules (<Perna perna>) prélevées au niveau de la baie du Lévrier. OceanDocs Dartige, A.Y.. Ce travail a pour objectif de déterminer le niveau de contamination des produits halieutiques mauritaniens. Pour cela, nous avons étudié les polluants chimiques (Cu, Fe, Zn, Cd et Hg) dans des moules (<Perna perna>) prélevées au niveau de la baie du Lévrier en Mauritanie sur une période de quatre mois (novembre 1998 à février 1999). Sur les 400 échantillons analysés les moyennes de concentrations trouvées restent faibles par rapports à celles trouvées dans d'autres zones peu polluées (Amiard et al. 1986b). Ce qui n'est pas le cas du cadmium qui présente des valeurs plus élevées, phénomène fréquemment rencontré le long de la côte ouest africaine (Sidoumou et al. 1992). Par ailleurs, dans cette présente étude il apparaît que les moules de petites... Tipo: Other Palavras-chave: Chemical analysis; Copper; Environmental conditions; Iron; Mercury; Size; Zinc; Copper; Iron; Environmental conditions; Mercury; Size; Zinc; Http://aims.fao.org/aos/agrovoc/c_1868; Http://aims.fao.org/aos/agrovoc/c_3950; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_4751; Http://aims.fao.org/aos/agrovoc/c_7093; Http://aims.fao.org/aos/agrovoc/c_8517. Ano: 1999 URL: http://hdl.handle.net/1834/1225 Zinc and water intake in rats: investigation of adrenergic and opiatergic central mechanisms BJMBR Fregoneze,J.B.; Luz,C.P.; Castro,L.; Oliveira,P.; Lima,A.K.S.; Souza,F.; Maldonado,I.; Macêdo,D.F.; Ferreira,M.G.; Bandeira,I.P.V.; Rocha Jr.,M.A.; Carvalho,F.L.Q.; De-Castro-e-Silva,E.. We have demonstrated that central administration of zinc in minute amounts induces a significant antidipsogenic action in dehydrated rats as well as in rats under central cholinergic and angiotensinergic stimulation. Here we show that acute third ventricle injections of zinc also block water intake induced by central ß-adrenergic stimulation in Wistar rats (190-250 g). Central inhibition of opioid pathways by naloxone reverses the zinc-induced antidipsogenic effect in dehydrated rats. After 120 min, rats receiving third ventricle injections of isoproterenol (160 nmol/rat) exhibited a significant increase in water intake (5.78 ± 0.54 ml/100 g body weight) compared to saline-treated controls (0.15 ± 0.07 ml/100 g body weight). Pretreatment with zinc (3.0,... Tipo: Info:eu-repo/semantics/other Palavras-chave: Zinc; Isoproterenol; Opioids; Thirst; Naloxone; Rats. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001000007 Zinc in the prevention of Fe2initiated lipid and protein oxidation Biol. Res. ZAGO,M. PAOLA; VERSTRAETEN,SANDRA V.; OTEIZA,PATRICIA I.. In the present study we characterized the capacity of zinc to protect lipids and proteins from Fe2+-initiated oxidative damage. The effects of zinc on lipid oxidation were investigated in liposomes composed of brain phosphatidylcholine (PC) and phosphatidylserine (PS) at a molar relationship of 60:40 (PC:PS, 60:40). Lipid oxidation was evaluated as the oxidation of cis-parinaric acid or as the formation of 2-thiobarbituric acid-reactive substances (TBARS). Zinc protected liposomes from Fe2+ (2.5-50 muM)-supported lipid oxidation. However, zinc (50 muM) did not prevent the oxidative inactivation of glutamine synthelase and glucose 6-phosphate dehydrogenase when rat brain superntants were oxidized in the presence of 5 muM Fe2+ and 0.5 mM H2O2 .We also... Tipo: Journal article Palavras-chave: Aluminum; Catechins; Free radicals; Iron; Lipid peroxidation; Zinc. Ano: 2000 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602000000200014 Relations among Valencia orange yields with soil and leaf nutrients in Northwestern Paraná, Brazil BABT Fidalski,Jonez; Auler,Pedro Antonio Martins; Tormem,Valdomiro. The Valencia orange orchards established on soils of low fertility in the Northwest region of Paraná State, Brazil, have showed symptoms of Mg deficiency and reduced fruit yields. The objective of this study was to verify the relationship between yield with soil and leaf nutrients during 1996/97 growing season. Two sites of low and high productivity were selected in seven orchards. Leaf and soil samples (fertilized rows and interrows) were collected in 1996. The results showed that the citrus yields were negatively related with soil Mg/K and Ca+Mg/K ratios in the fertilized rows, and fruit weight positively correlated with leaf Zn in the low productivity orchards. The fruit weight was positively related with leaf Ca and soil Ca in the fertilized rows of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Citrus sinensis; Foliar diagnosis; Liming; K fertilization; Calcium; Zinc. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400006 Zinc accumulation in phosphate granules of Ucides cordatus hepatopancreas BJMBR Corrêa Junior,J.D.; Allodi,S.; Amado-Filho,G.M.; Farina,M.. Amorphous phosphate granules are present in vertebrate and invertebrate organisms. The functions attributed to these structures depend on their mineral contents and organic matrix composition. In the present study we have determined zinc concentrations in the hepatopancreas of the crab Ucides cordatus from regions contaminated with zinc, and the elemental composition of hepatopancreal phosphate granules. Organisms were collected from the contaminated areas of Sepetiba Bay (SB) and Guanabara Bay (GB), and from a non-contaminated area, Ribeira Bay (RB). The first two sites are located near the metropolitan region of Rio de Janeiro city, Brazil. Atomic absorption spectroscopy (AAS) showed a significant difference (P&lt;0.05) for zinc concentration in the... Tipo: Info:eu-repo/semantics/other Palavras-chave: Phosphate granules; Hepatopancreas; Zinc; Energy dispersive X-ray analysis; Atomic absorption spectroscopy; Electron spectroscopic imaging. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000200009 Differential effects of lead and zinc on inhibitory avoidance learning in mice BJMBR de Oliveira,F.S.; Viana,M.R.; Antoniolli,A.R.; Marchioro,M.. We studied the effects of chronic intoxication with the heavy metals lead (Pb2+) and zinc (Zn2+) on memory formation in mice. Animals were intoxicated through drinking water during the pre- and postnatal periods and then tested in the step-through inhibitory avoidance memory task. Chronic postnatal intoxication with Pb2+ did not change the step-through latency values recorded during the 4 weeks of the test (ANOVA, P>0.05). In contrast, mice intoxicated during the prenatal period showed significantly reduced latency values when compared to the control group (day 1: q = 4.62, P<0.05; day 7: q = 4.42, P<0.05; day 14: q = 5.65, P<0.05; day 21: q = 3.96, P<0.05, and day 28: q = 6.09, P<0.05). Although chronic postnatal intoxication with Zn2+... Tipo: Info:eu-repo/semantics/other Palavras-chave: Lead; Zinc; Inhibitory avoidance; Memory. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000100014 The lizard cerebral cortex as a model to study neuronal regeneration Anais da ABC (AABC) LOPEZ-GARCIA,CARLOS; MOLOWNY,ASUNCION; NACHER,JUAN; PONSODA,XAVIER; SANCHO-BIELSA,FRANCISCO; ALONSO-LLOSA,GREGORI. The medial cerebral cortex of lizards, an area homologous to the hippocampal fascia dentata, shows delayed postnatal neurogenesis, i.e., cells in the medial cortex ependyma proliferate and give rise to immature neurons, which migrate to the cell layer. There, recruited neurons differentiate and give rise to zinc containing axons directed to the rest of cortical areas, thus resulting in a continuous growth of the medial cortex and its zinc-enriched axonal projection. This happens along the lizard life span, even in adult lizards, thus allowing one of their most important characteristics: neuronal regeneration. Experiments in our laboratory have shown that chemical lesion of the medial cortex (affecting up to 95% of its neurons) results in a cascade of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Medial cortex; Hippocampus; Postnatal neurogenesis; Neural stem cells; Zinc; Regeneration. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000100006 Zinc detoxification by a cyanobacterium from a metal contaminated bay in Brazil BABT Andrade,Luciana; Keim,Carolina N.; Farina,Marcos; Pfeiffer,Wolfgang C.. We describe here the trapping of zinc in polyphosphate granules of the cyanobacterium Synechocystis aquatilis NPBS-3. Cells were cultured in 25 µM of zinc chloride and prepared for electron microscopy and energy-dispersive X-ray analysis. Some ultrastructural features were changed by zinc exposure, the increase of glycogen granules number being the main change. The polyphosphate granules contained phosphorus, sulphur, calcium, iron and zinc. The trapping of zinc in polyphosphate granules seemed to be an effective way of detoxifying the metal and surviving in the bay. As a non-specific mechanism, these polyphosphate granules could also be effective in trapping other metals in excess. Tipo: Info:eu-repo/semantics/article Palavras-chave: Heavy metals; Zinc; Sepetiba Bay; Polyphosphate granules; Glycogen granules; Detoxification. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100020 Manejo de hábitat y microorganismos para degradar efluentes industriales: un estudio de caso Ecología austral Abril,Adriana. Se evaluó la eficiencia de prácticas de manejo de hábitat y microorganismos para degradar efluentes en una industria metalúrgica de Córdoba, Argentina. Para optimizar la actividad de organismos del agua, el suelo y la rizosfera de las plantas, se manejaron tres hábitats: acuático, de humedales y agrícola. Las prácticas fueron: introducción de vegetación palustre y terrestre, aireación del agua, laboreos, remoción de sedimentos e inoculación con bacterias seleccionadas. Se evaluaron los siguientes parámetros: pH y contenido de bacterias en el agua, y contenido de aceites, Cr y Zn en los sedimentos, suelo y napa freática. El pH registrado fue siempre muy elevado (entre 8.4 y 10.9), mientras que la cantidad de bacterias descomponedoras aumentó hasta valores... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cromo; Zinc; Aceites minerales; Bioremediación; Fitoremediación. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2005000100002 Effect of improved crop production technology on pigeonpea yield in resource poor rainfed areas Open Agri Ramakrishna, A. Rao, C.S.,( Ch Srinivasa Rao ). Palavras-chave: Pigeonpeas; Production technology; Rhizobium; Zinc; On-farm research; Sowing rates; Nucleus; Soil analysis; Watersheds; Seed treatment. Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3237 Prospects of breeding for micronutrients and β-carotene-dense sorghums Open Agri Reddy, B.V.S.,( Belum V. S. Reddy ). Palavras-chave: Carotenes; Grain; Organic acid salts; Agronomic characters; Heritability; Germplasm; Phenotypes; Genetic variation; Sorghum; Zinc. Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3256 Valores de referencia de cobre, zinc y selenio en niños ABCL Feliu,María Susana; Piñeiro,Adriana; López,Clara; Slobodianik,Nora Haydée. Desde el punto de vista nutricional es necesario conocer la concentración sérica de algunos minerales en niños y para poder interpretar los resultados es imprescindible comparar con valores de referencia. El objetivo de este trabajo es determinar valores de referencia de cobre, zinc y selenio en suero de niños. Se utilizaron muestras de suero de niños de ambos sexos (n = 42) clínicamente sanos, elegidos al azar, entre 1 mes y 12 años de edad, concurrentes para control al Servicio de Pediatría del Hospital de Clínicas "José de San Martín", Ciudad Autónoma de Buenos Aires. Los niveles de zinc (Zn), cobre (Cu) y selenio (Se) se determinaron en suero libre de hemólisis por espectrofotometría de absorción atómica. Los resultados fueron: cobre: 0,78 - 2,51... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cobre; Zinc; Selenio; Valores de referencia; Niños. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572005000400007 Correlation between heavy metal ions (copper, zinc, lead) concentrations and root length of Allium cepa L. in polluted river water BABT Palacio,Soraya Moreno; Espinoza-Quiñones,Fernando Rodolfo; Galante,Raquel Manozzo; Zenatti,Dilcemara Cristina; Seolatto,Araceli Aparecida; Lorenz,Evandro Kleber; Zacarkim,Carlos Eduardo; Rossi,Nickeli; Rizzutto,Márcia de Almeida; Tabacniks,Manfredo Harri. The present work was performed using the common onion (Allium cepa L.) as a bioindicator of toxicity of heavy metals in river water. The test waters were collected at two sampling sites: at the beginning and the end of the Toledo River. The bulbs of A. cepa L. were grown in test water with nine concentration levels of copper, zinc and lead from 0.1 to 50 ppm. In the laboratory, the influence of these test liquids on the root growth was examined during five days. For test liquids containing below 0.03-ppm dissolved Cu the root growth was reduced by 40% However, the same reduction occurred for 1-ppm dissolved Zn. For dissolved Pb, results reveal toxicity above 0.1 and 0.6 ppm at the beginning and the end of the Toledo river water, respectively. Tipo: Info:eu-repo/semantics/article Palavras-chave: Acute toxicity; Bioassay; Copper; Zinc; Lead; Allium cepa L. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400024 Neo-Timm staining in the thalamus of chronically epileptic rats BJMBR Hamani,C.; Paulo,I. de; Mello,L.E.A.M.. The thalamus is an important modulator of seizures and is severely affected in cholinergic models of epilepsy. In the present study, chronically epileptic rats had their brains processed for neo-Timm and acetylcholinesterase two months after the induction of status epilepticus with pilocarpine. Both controls and pilocarpine-treated animals presented neo-Timm staining in the anterodorsal nucleus, laterodorsal nucleus, reticular nucleus, most intralaminar nuclei, nucleus reuniens, and rhomboid nucleus of the thalamus, as well as in the zona incerta. The intensity of neo-Timm staining was similar in control and pilocarpine-treated rats, except for the nucleus reuniens and the rhomboid nucleus, which had a lower intensity of staining in the epileptic group. In... Tipo: Info:eu-repo/semantics/article Palavras-chave: Epilepsy; Pilocarpine; Zinc; Sprouting; Nucleus reuniens; Midline thalamus. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100016 Changes in nitrate reductase activity and oxidative stress response in the moss Polytrichum commune subjected to chromium, copper and zinc phytotoxicity Braz. J. Plant Physiol. Panda,Sanjib Kumar; Choudhury,Shuvasish. The main aim of this paper was to investigate the effect of chromium (Cr), copper (Cu) and zinc (Zn) on nitrate reductase (NR) activity and oxidative stress responses in the moss Polytrichum commune. Cr, Cu and Zn resulted in the inhibition of NR activity. A decline in total chlorophyll content was observed after 24 and 48 h of metal treatment. Accumulation of the metals showed a dose and time dependent increase. High accumulation of Cu, Cr and Zn were seen in moss shoots after 24 and 48 h of treatment. Treatment of Cr, Cu and Zn for 24 or 48 h resulted in the increase of malondialdehyde (MDA) content in moss shoots. The highest increase was observed in shoots under Cu treatment followed by Cr and Zn. The MDA content was significantly higher after 48h.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Chromium; Copper; Malondialdehyde; Nitrate reductase; Oxidative stress; Polytrichum commune; Zinc. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200001 Diagnostics of Sorghum and Pearl Millet grains-based nutrition in India Open Agri Rao, P.P.. Palavras-chave: Millets; Sorghum; Nutrient intake; Zinc; Cereals; Grain legumes; Proteins; Iron; Nutrients; Vitamins. Ano: 2006 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3199 Registros recuperados: 68 Primeira ... 1 2 3 4 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco