Major Ions And As
Mostrando 13-24 de 196 artigos, teses e dissertações.
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13. Determinação de Sn(II) por polarografia: aplicação no controle de qualidade de reagentes liofilizados para radiodiagnóstico / Polarographic determination of Sn(II): application in the quality control of radiopharmaceutical reagents
Stannous chloride (SnCl2.2H2O) is the major compound used for reduction of generator-derived 99mTc-pertechnetate in cold kits for on site preparation of 99mTc-radiopharmaceuticals. These cold kits usually contain a ligand, stannous chloride, and different additives. Various techniques were described for tin determination, but they cannot distinguish between
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2008
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14. Dinâmica das formas dissolvidas de nitrogênio e carbono em microbacias da Mata Atlântica no município de Ubatuba (SP) / Dynamics of dissolved forms of nitrogen and carbon in small watersheds of the Atlantic Forest, at Ubatuba - Brazil
Based on the fact that streams water quality reflects the conditions of the landscape, the objectives of this study were: to investigate nitrogen (N), carbon (C) and major ions dynamics in six streams covered by Atlantic Forest; and assess the impacts of the human activities over the biogeochemistry of two urban streams at same region. Since this study is pa
Publicado em: 2008
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15. Behavior of dissolved inorganic N in surface and sub-surface waters in a cultivated sugar cane area / Comportamento do N inorgânico dissolvido em águas superficiais e sub-superficiais em área com cultivo de cana-de-açúcar
The sugar cane is an important agricultural activity in Brazil and its productivity is related to several factors, such as the availability of suitable nutrients quantities, with emphasis on the nitrogen. However, the constant use of fertilizers increases the possibility of environmental contamination, mainly in water bodies. In this study were evaluated the
Publicado em: 2008
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16. Alterações plasmáticas do cobre e do zinco em crianças submetidas a cirurgia cardíaca com circulação extracorpórea
The cardiac surgery, comprising extracorporeal circulation, is known to trigger oxidative stress due to the formation of reactive oxygen species and free radicals during the periods of ischemia and reperfusion. They are hazardous to the heart cell components and regarded as responsible for the myocardial stunned. These processes are intricately associated wi
Publicado em: 2008
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17. Caracterização hidrogeoquímica da microbacia de drenagem do córrego Barra Bonita, São Paulo / Hydrogeochemistry characterization of the Barra Bonita stream small watershed, São Paulo
The study in the Barra Bonita stream small watershed (S: 22o 2553,9" and W: 48o 3234,8") aimed to characterize its hydrogeochemical parameters by dissolved and particulate material transport models to identify the relations between soil use and water quality. Because there was no longer an environmental zoning in the municipality of Barra Bonita, this study
Publicado em: 2007
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18. A C-type lectin from Bothrops jararacussu venom can adhere to extracellular matrix proteins and induce the rolling of leukocytes
Purification of a lectin from Bothrops jararacussu venom (BjcuL) was carried out using agarose-D-galactose affinity gel. MALDI-TOF gave a major signal at m/z 32028, suggesting the presence of a dimmer composed of two identical subunits. Divalent cations were required for the lectin activity, as complete absence of such ions reduced hemagglutination. BjcuL wa
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2007
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19. Padrões limnológicos e do fitoplâncton nas fases de enchimento e estabilização dos reservatórios do APM Manso e AHE Jauru (Estado de Mato Grosso)
This thesis was carried out during the filling and stabilization phases of the reservoirs of APM Manso (Dec/99-Apr/03) and AHE Jauru (Oct/02-Apr/04), in the state of Mato Grosso. It mostly aimed to identify limnological patterns similar to both reservoirs; analyze the influences of river basin, residence time and decomposition process on these patterns; veri
Publicado em: 2007
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20. Leptospirose letal aguda em Hamster: caracterização de perfis bioquímicos, histopatológicos e celulares renais, relacionada a ensaios terapêuticos / Reversal of renal tubule transporter down-regulation during severe leptospirosis with antimicrobial therapy
Leptospirosis is a zoonosis of worldwide distribution. About 5-10% of all human infections presents with severe forms. Weils syndrome, the most common presentation of severe forms of leptospirosis, may courses either as a single monophasic disease or as a disease with prolonged course, characterized by a combination of hemorrhage, particularly in the lung, r
Publicado em: 2007
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21. Deposição atmosférica de espécies químicas em Ribeirão Preto, uma importante cidade canavieira do estado de São Paulo / Deposição atmosférica de espécies químicas em Ribeirão Preto, uma importante cidade canavieira do estado de São Paulo
Rain water samples were collected based on events at the University of São Paulo - campus Ribeirão Preto - from August 2002 to December 2005. About 84% (n=127) of the samples had excess of acidity, with an average pH of 5.12. There was no correlation between the pH values and the sugar cane harvest period. The Volume Weighed Means (VWM, in mol L-1) for K+
Publicado em: 2007
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22. Sistemas Trinucleares Contendo Ãons LantanÃdeos
Aiming to develop new ligands capable to coordinate most of one lanthanide ions, this work shows the synthesis of trinuclear systems for photonics applications and characterization by elemental analysis, spectroscopic methods (infrared, electronic absorption and NMR of 1H and 13C). A particular study, about the new compounds synthetized, shows the substituti
Publicado em: 2006
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23. Surface treatments of a iron aloy by nitrogen ions / Tratamentos de superficies de uma liga ferrosa por ions de nitrogenio
The objective of this project is to study processes of plasma surface treatment with special emphasis to the differences these techniques might show in relation to others, looking forward to understand the process from surface phenomena. Two kinds of surface treatment have been studied, including three different techniques: ion beam nitriding, pulsed plasma
Publicado em: 2006
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24. SUSCEPTIBILIDADE DOS ECOSSISTEMAS CONTINENTAIS DA BAIXADA MARANHENSE AOS EFLUENTES ATMOSFÉRICOS LIBERADOS POR SÃO LUÍS MA: ESTUDOS DE CASO DE PINHEIRO E VIANA / SUSCEPTIBILITY OF CONTINENTAL ECOSYSTEMS DONTOWN AT THE ATMOSPHERIC EFFLUENTS RELEASED BY SÃO LUIS: case studies Pinheiro and Viana
In Maranhao, studies on the atmospheric chemistry are scarce, with only one record for the region of Lagoa do Caco, in First Cross. Although still a developing city, with moderate urban growth and incipient industrialization rate, the implantation of the steel complex in St. Louis - as the Aluminum Industry of Maranhão (ALUMAR) and the pellet plant and prod
Publicado em: 2006