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SÍNTESIS Y CARACTERIZACIÓN DE ÓXIDOS MIXTOS DE SÍLICE-TITANIA PREPARADOS POR MÉTODO SOL-GEL Y TRATAMIENTO HIDROTÉRMICO (SYNTHESIS AND CHARACTERIZATION OF SILICA-TITANIA MIXED OXIDES PREPARED BY SOL–GEL METHOD AND HYDROTHERMAL TREATMENT)
(Fondo Editorial EIA - Universidad EIA, 2013-10-16)
Se prepararon óxidos mixtos de SiO2-TiO2 de diferente composición por el método sol-gel combinado con tratamiento hidrotérmico (TH), utilizando como precursores tetraetilortosilicato y tetraisopropóxido de titanio como ...
Inhibition and activation of UDP-glucuronyltransferase in alloxanic-diabetic rats
(1986)
Short or long term alloxan diabetes produced activation of oestrone and morphine glucuronidation and inhibition of p-nitrophenol glucuronidation in rat liver microsomes. Insulin treatment restored decreased glucuronyltransferase ...
A search for endogenous modulators of the GABA receptor in different regions of the rat CNS
(1983)
The possible existence of endogenous substances other than γ-aminobutyric acid (GABA), that can also bind to rat brain GABA receptors, has been investigated in synaptic membranes derived from whole rat brain, or from ...
Diabetes in female rats; changes in liver microsomal aminopyrine N-demethylase and UDP-glucuronyl transferase activities
(1990)
Short or long term diabetes in female rats produced remarkable activation of aminopyrine N-demethylation, inhibition of oestrone and p-nitrophenol glucuronidation and no changes in morphine UDP-glucuronyltransferase activity ...
Extracción y medida de actividad de pectin metil estearasa en pitaya amarilla (acanthocereus pitajaya), enzima relacionada con el ablandamiento
(Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología, 2009)
RESUMENEn diversas técnicas aplicadas para la conservación en fresco de la pitaya amarilla (Acanthocereus pitajaya) se ha encontrado que el ablandamiento excesivo de su corteza contribuye al deterioro de su calidad. Puesto ...
Extraction systems for isolating esterases having interfacial adsorption
(Universidad Nacional de Colombia, 2009)
Resumen: En el presente trabajo se optimizaron las condiciones de extracción de esterasas con actividad en interfaces, a partir de la anémona marina Stichodactyla helianthus y del camarón peneido Litopenaeus vannamei. Las ...
Partial purification and immunohistochemical localization of ATP diphosphohydrolase from Schistosoma mansoni: Immunological cross-reactivities with potato apyrase and Toxoplasma gondii nucleoside triphosphate hydrolase
(1996)
ATP diphosphohydrolase from tegumental membranes of Schistosoma mansoni was solubilized with Triton X-100 plus deoxycholate and separated by preparative nondenaturing polyacrylamide gel electrophoresis. Two isoforms with ...
Metabolism of acetaldehyde by rat isolated aortic rings: Does endothelial tissue contribute to its extrahepatic metabolism?
(1993)
Acetaldehyde (AcH) metabolism in isolated aortic rings was studied by assessing in vitro-added AcH disappearing rate by head space gas chromatography. It was found that AcH was metabolized by aortic rings or by homogenates ...
Distinct Lipid Rafts in Subdomains from Human Placental Apical Syncytiotrophoblast Membranes
(SPRINGER, 2008-08)
We report on the characteristics of raft domains in the apical membrane from human placental syncytiotrophoblast (hSTB), an epithelium responsible for maternal-fetal exchange. Previously, we described two isolated fractions ...
Partial purification and immunohistochemical localization of ATP diphosphohydrolase from Schistosoma mansoni - Immunological cross-reactivities with potato apyrase and Toxoplasma gondii nucleoside triphosphate hydrolase
(AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC, 1996-09-06)
ATP diphosphohydrolase from tegumental membranes of Schistosoma mansoni was solubilized with Triton X-100 plus deoxycholate and separated by preparative nondenaturing polyacrylamide gel electrophoresis. Two isoforms with ...