Major Ions
Mostrando 25-36 de 315 artigos, teses e dissertações.
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25. 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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26. 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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27. Estudo da ação da peçonha do escorpião brasileiro Tityus serrulatuse de suas frações na inibição do crescimento de fungos / Antifungal properties of Tityus serrulatus scorpion venom and its major toxin TsTx-I.
Antimicrobial peptides appear to be ubiquitous and multipotent components of the innate immune defense arsenal used by both prokaryotic and eukaryotic organisms. They are used in the first line of immune defense. In this work, we evaluate the effects of Tityus serrulatus venom (Tsv) and its major toxin TsTX-I, a -neurotoxin, on fungi growth. TsTX-I was isola
Publicado em: 2007
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28. 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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29. 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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30. 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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31. 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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32. "Estudo das contribuições térmica e eletrônica na variação do índice de refração de materiais dopados com íons emissores" / Study of thermal and electronic contribution to the refractive index variation of materials doped with ions emiters
In this work we have studied the thermal and optical properties of emitters ions by using the thermal lens and z-scan time resolved techniques. It was obtained the thermal lens photothermal spectra of Yb3+ doped samples, and several other photothermal parameters. Also, it was done a study on the optical nonlinearity saturation effects over the determination
Publicado em: 2006
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33. 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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34. 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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35. 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
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36. Biossorção de cádmio por linhagens de Aspergillus sp / Biosorption of cadmium by Aspergillus sp. strains
The heavy metals represent the major industrial residues contaminant of soils, plants and animals in the ecosystems, causing a toxic effect to humans, mainly due to the wide spread distribution in environment which is intensified by industrialization process. One of most toxics heavy metals is cadmium, commonly used in industrial process, what make it an imp
Publicado em: 2006