Microelement
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Performance of IPEN-CNEN/SP neutron activation analysis laboratory for microelement determinations in proficiency testing.
The performance of Neutron Activation Laboratory, IPEN ? CNEN/SP, was evaluated for the Ca, Fe, K, Mn, Na and Zn determinations in animal feed samples for ruminants through a proficiency test (PT) program. This PT program is organized by Embrapa Cattle Southeast to evaluate laboratories that analyze animal feed samples. Considering the fractions of satisfact
INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE. Publicado em: 2011
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2. Iron-limited condition modulates biofilm and adhesive porpoerties in enteroaggregative Escherichia coli / Influência da limitação de ferro nas propriedades adesivas e na formação de biofilme de Escherichia coli enteroagregativa (EAEC)
Escherichia coli enteroaggregative (EAEC) can cause persistent or acute diarrhea. It is characterized by the aggregative adherence pattern on HEp-2 cells, with the presence of bacteria aggregates like stacked bricks. Many strains have the capacity to produce siderophores, low-molecular-mass compounds that capture iron under conditions of low concentration of
Publicado em: 2009
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3. Avaliação da influência da operação da termoelétrica a carvão na concentração dos metais e as no solo de Figueira, PR - Brasil
The aim of this work is to study metal and As concentrations in soil due to ash deposition from a coal plant at Figueira (PR), evaluating the macroelement (Al, Ca, Fe, Mg, Mn, Ti, V) and microelement (As, Cd, Co, Cr, Cu, Mo, Ni, Pb, Zn) concentrations in the soil around the coal plant. The plant operation caused a slight increase in the majority of the metal
Química Nova. Publicado em: 2008
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4. Indução de danos Oxidativos em celulas de mamifero por isoproterenol e cobre
Isoproterenol (IP) is a synthetic catecholamine of great pharmacological interest, as it is the most potent B-adrenergic known agonist. Recent works revealed the involvement of IP oxidation reactions in cardiotoxicity mechanisms. Copper is an essential microelement which has a fundamental role in living organisms metabolism. In high concentration copper is e
Publicado em: 2001
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5. Microestrutural evolution in a CuZnAl shape memory alloy: kinetics and morphological aspects
The microstructural evolution of the CuZnAl shape memory alloys was studied by indirect techniques relating to the atomic migration rate of grain boundaries. Addition elements were used in a Cu-15,5Zn-8,0Al alloy to provide a comparison with the same alloy without microelement additions. The alloys were melted in an induction furnace of 24 kVA. After casting
Materials Research. Publicado em: 2000-10