Browsing ICAQF - Artigos by Submit Date
Now showing items 21-40 of 1096
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Increased expression and purification of soluble iron-regulatory protein 1 from Escherichia coli co-expressing chaperonins GroES and GroEL
(Associação Brasileira de Divulgação Científica, 2008-04-01)Iron is an essential metal for all living organisms. However, iron homeostasis needs to be tightly controlled since iron can mediate the production of reactive oxygen species, which can damage cell components and compromise ...
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Indirect evaluation of estrogenic activity post heterotopic ovarian autograft in rats
(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2008-08-01)PURPOSE: To morphologically evaluate the estrogenic effect on the uterus and vagina of rats submitted to ovarian autografts. METHODS: Twenty Wistar EPM-1 adult rats were bilaterally ovariectomized, followed by ovarian ...
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Urinary glycosaminoglycans excretion and the effect of dimethyl sulfoxide in an experimental model of non-bacterial cystitis
(Sociedade Brasileira de Urologia, 2008-08-01)PURPOSE: We reproduced a non-bacterial experimental model to assess bladder inflammation and urinary glycosaminoglycans (GAG) excretion and examined the effect of dimethyl sulfoxide (DMSO). MATERIALS AND METHODS: Female ...
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Brazilian flora extracts as source of novel antileishmanial and antifungal compounds
(Instituto Oswaldo Cruz, Ministério da Saúde, 2008-08-01)Natural products have long been providing important drug leads for infectious diseases. Leishmaniasis is a protozoan parasitic disease found mainly in developing countries, and it has toxic therapies with few alternatives. ...
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Effects of prone and supine position on oxygenation and inflammatory mediator in a hydrochloric acid-induced lung dysfunction in rats
(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2008-10-01)PURPOSE: To compare the effectiveness of mechanical ventilation of supine versus prone position in hydrochloric acid (HCl)-induced lung dysfunction. METHODS: Twenty, adult, male, Wistar-EPM-1 rats were anesthetized and ...
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Extração seletiva de metais pesados em sedimentos de fundo do Rio Tietê, São Paulo
(Sociedade Brasileira de Química, 2009-01-01)Sediment samples from Tietê river were submitted to chemical and sequential extractions of heavy metals (Cd, Cr, Cu, Ni, Pb and Zn). It was followed a single extraction by using 0.1 mol L-1 hydrochloric acid and a sequential ...
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Estudo fitoquímico da madeira de Guarea macrophylla (Meliaceae)
(Sociedade Brasileira de Química, 2009-01-01)In the present work, the crude ethanol extract from wood of G. macrophylla was submitted to liquid/liquid partition between hexane, CH2Cl2, EtOAc and n-BuOH. Each phase was individually chromatographed over silica gel, ...
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Estratégias de pré-concentração em eletroforese capilar (CE): parte 1. Manipulação da velocidade eletroforética do analito
(Sociedade Brasileira de Química, 2009-01-01)Capillary electrophoresis has become a well-established and routine-based separation technique. It is based on the differences between charged analyte mobility in aqueous or organic electrolytes. Its major limitation is ...
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Remoção de Pb2+ e Cr3+ em solução por zeólitas naturais associadas a rochas eruptivas da formação serra geral, bacia sedimentar do Paraná
(Sociedade Brasileira de Química, 2009-01-01)The capacity of natural zeolites and its host rock (dacite) to remove Pb2+ and Cr3+ from aqueous solutions has been investigated. Results showed that both samples prefer to remove Pb2+ instead of Cr3+. Almost 100% of Pb2+ ...
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Rat pinealectomy: a modified direct visual approach
(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2009-08-01)PURPOSE: To report a new, direct visual approach for rat pinealectomy. METHODS: Eighty adult female rats (Rattus norvegicus albinus EPM-1 strain) were weighted and anesthetized intraperitoneally with 15 mg/kg xylazine and ...
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A glimpse on biological activities of tellurium compounds
(Academia Brasileira de Ciências, 2009-09-01)Tellurium is a rare element which has been regarded as a toxic, non-essential trace element and its biological role is not clearly established to date. Besides of that, the biological effects of elemental tellurium and ...
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Study on the vaginal smear of rats submitted to autologous ovarian transplant: impact of remote ischemic preconditioning
(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2009-10-01)PURPOSE: To evaluate the remote ischemic preconditioning (R-IPC) impact on the quality of the ovarian graft by means of vaginal smear of transplanted rats. METHODS: Sixty rats were used divided in six groups: Control; Fresh ...
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Comparative study of technique to obtain stem cells from bone marrow collection between the iliac crest and the femoral epiphysis in rabbits
(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2009-10-01)PURPOSE: To assess the technique for the collection of rabbit bone marrow stem cells from different regions to be used as an experimental model in regenerative medicine. METHODS: Thirty rabbits were allocated into 2 groups: ...
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Chemical composition and seasonal variation of the volatile oils from leaves of Michelia champaca L., Magnoliaceae
(Sociedade Brasileira de Farmacognosia, 2009-12-01)The volatile oils from leaves of Michelia champaca L. collected bimonthly during one year (four times on the fifteenth day of January, March, May, July, September, and November - 2004) were subjected to GC/FID and GC-MS ...
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Arquivos abertos e instrumentos de gestão da qualidade como recursos para a disseminação da informação científica em segurança e saúde no trabalho
(IBICT, 2009-12-01)The objective of this study is to present the philosophy of open archives as an instrument for occupational health and safety (OHS) management. The survey method stands for the bibliography research, together with an ...
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Importância da pesquisa clínica para a prática na área de saúde
(Escola Paulista de Enfermagem, Universidade Federal de São Paulo (UNIFESP), 2010-01-01) -
Chemical composition and anti-inflammatory evaluation of essential oils from leaves and stem barks from Drimys brasiliensis Miers (Winteraceae)
(Sociedade Brasileira de Química, 2010-01-01)The essential oils from leaves and stem barks from Drimys brasiliensis Miers (Winteraceae) were individually obtained by hydrodistillation and their compounds characterized by use of GC/FID and GC/MS. The main identified ...
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Estratégias de pré-concentração em eletroforese capilar: parte 2. Manipulação da velocidade da fase dispersa/secundária
(Sociedade Brasileira de Química, 2010-01-01)This work describes CE preconcentration strategies based on the effect of manipulation of the disperse/secondary velocity. Introduced by Terabe et al. in 1984, micellar electrokinetic chromatography is a powerful separation ...
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Metilglioxal: uma toxina endógena?
(Sociedade Brasileira de Química, 2010-01-01)Methylglyoxal is a very reactive α-oxoaldehyde putatively produced by glycolysis, cytochrome P450-catalyzed acetone oxidation and aminoacetone oxidation. Methylglyoxal has been pointed as a substrate for the glyoxalase ...
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Chemical modification of niobium layered oxide by tetraalkylammonium intercalation
(Sociedade Brasileira de Química, 2010-01-01)Chemical modification of the layered K4Nb6O17 material was systematically investigated through the reaction of its proton-exchanged form (H2K2Nb6O17) in alkaline solutions containing tetramethylammonium (tma+), tetraethylammonium ...