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Degradation of Caffeine by Heterogeneous Photocatalysis Using ZnO with Fe and Ag

Almeida, Lariana Negrão Beraldo; Pietrobelli, Juliana Martins Teixeira Abreu; Lenzi, Giane Gonçalves; Santos, Onélia Aparecida Andreo.
Braz. arch. biol. technol; 63 (), 2020
Abstract The organic compound caffeine when detected in environmental matrices such as surface waters and groundwater is considered as an emerging contaminant, in which its effects are still unknown. Therefore, in the present research, zinc oxide-based catalysts impregnated with iron and silver were prep...
Cafeína/química, Adsorción, Catálisis, Óxido de Zinc/química, Plata/química, Hierro/química, Procesos Fotoquímicos, Reactores Biológicos
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Environmental drivers on leaf phenology of ironstone outcrops species under seasonal climate

GARCIA, LETÍCIA C; BARROS, FERNANDA V; LEMOS-FILHO, JOSÉ P.
An. acad. bras. ciênc; 89 (1), 2017
ABSTRACT Banded iron formations (BIF) have a particular vegetation type and provide a good model system for testing theories related to leaf phenology, due to unique stressful environmental conditions. As a consequence of the stressful conditions of BIF environment, we hypothesize that most species would...
Brasil, Ecosistema, Hierro/química, Fotoperiodo, Hojas de la Planta/fisiología, Lluvia, Estaciones del Año, Suelo/química, Temperatura, Factores de Tiempo, Árboles/fisiología, Clima Tropical
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Características gerais dos espermatozóides em homens oligozoospérmicos com e sem varicocele clínica
General chararacteristics of the spermatozoa in oligozoospermic men with and without clinical varicocele

Andrade-Rocha, F. T; Carvalho, P. P. N G. de.
Rev. Assoc. Med. Bras. (1992, Impr.); 43 (1), 1997
Pacientes com oligozoospermia apresentam uma reduçao na qualidade do sêmen, independente da etiologia do distúrbio. Objetivo. Investigar o papel da varicocele na reduçao da qualidade do sêmen, em homens oligozoospérmicos. Métodos. Foram estudados dez pacientes portadores de varicocele clínica esq...
Varicocele/complicaciones, Oligospermia/etiología, Espermatozoides/fisiología, Infertilidad Masculina/etiología, Hierro/química, Peroxidación de Lípido, Antioxidantes
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