Navegação Ciências Biológicas por Título
Resultados 804-823 de 3052
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Distribution and genetic diversity of the human polyomaviruses JC and BK in surface water and sewage treatment plant during 2009 in Porto Alegre, southern Brazil
(2017) [Artigo de periódico]The human polyomaviruses JC and BK (JCPyV and BKPyV) are ubiquitous, species-specific viruses that belong to the family Polyomaviridae. These viruses are known to be excreted in human urine, and they are potential indicators ... -
Distribution and relative abundance of large whales in a former whaling ground off eastern South America
(2010) [Artigo de periódico]Ship-based sighting surveys for cetaceans were conducted in the former whaling ground off the northeastern coast of Brazil. The cruises took place in winter and spring of 1998-2001 with the objectives of investigating ... -
Distribution patterns of riodinid butterflies (Lepidoptera: Riodinidae) from southern Brazil
(2014) [Artigo de periódico]Background: The aim of this study was to synthesize the knowledge of Riodinidae butterflies (Lepidoptera: Papilionoidea) in Rio Grande do Sul state (RS), southern Brazil, evaluating the role of climatic, topographic, and ... -
Distúrbios trombofílicos em crianças e adolescentes com trombose da veia porta
(2003) [Artigo de periódico]Objetivo: determinar a freqüência de deficiência da proteína C (PC), proteína S (PS) e antitrombina (AT) e das mutações fator V Leiden (FVL), G20210A, no gene da protrombina (PTR), e C677T da metilenotetraidrofolato redutase ... -
Diuretics : again the first step in the treatment of most patients with hypertension
(2001) [Artigo de periódico]The results and interpretations of the most recent controlled clinical trials on antihypertensive drugs have fuelled the debate about the drug that should be used to begin treatment for hypertension. Every comparison of ... -
Diurnal variation of vascular diameter and reactivity in healthy young men
(2008) [Artigo de periódico]The higher incidence of cardiovascular events in the morning is accompanied by an increased vascular tone. However, there are few published studies designed to evaluate the diurnal variation of vascular and endothelial ... -
Divergent action of fluoxetine in zebrafish according to responsivity to novelty
(2018) [Artigo de periódico]Here we show that the novel object recognition test can discriminate between high (HRN, neophobic) and low (LRN, neophilic) novelty responders in zebrafish populations. Especially when we observe the latency to the first ... -
Divergent effect of fluoxetine on the response to physical or chemical stressors in zebrafish
(2017) [Artigo de periódico]Fluoxetine is a selective serotonin reuptake inhibitor that increases serotonin concentration in the central nervous system and modulates various systems, including the control of sympathetic outflow and the hypothalamus ... -
Divergent genetic mechanism leads to spiny hair in rodents
(2018) [Artigo de periódico]Spines, or modified hairs, have evolved multiple times in mammals, particularly in rodents. In this study, we investigated the evolution of spines in six rodent families. We first measured and compared the morphology and ... -
Diversidade de bactérias diazotróficas endofíticas associadas a plantas de milho
(2007) [Artigo de periódico]Bactérias diazotróficas endofíticas são capazes de promover o crescimento do milho por meio da fixação biológica do nitrogênio (FBN) ou pela produção de fitormônios. Neste estudo, objetivou-se caracterizar a diversidade ... -
Diversidade de bactérias gram-positivas presentes no pescado e no convés de barcos pesqueiros aportados no município de Passo de Torres (SC)
(2017) [Artigo de periódico]O pescado é um alimento de excelente valor nutritivo; entretanto, é muito perecível, necessitando de condições sanitárias adequadas desde a sua captura até a comercialização. Objetivou-se, neste estudo, determinar a presença ... -
Diversidade de Pentatomoidea (Hemiptera, Heteroptera) em três fragmentos de Mata Atlântica no sul de Santa Catarina
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Diversidade e perfil de susceptibilidade antimicrobiana de Enterococcus sp. isolados das águas do Arroio Dilúvio - Porto Alegre, RS, Brasil
(2013) [Artigo de periódico]O objetivo do presente trabalho foi determinar a frequência das espécies de enterococos das águas do arroio Dilúvio, em Porto Alegre, RS, bem como avaliar o perfil susceptibilidade frente a antimicrobianos de importância ... -
Diversidade, perfis de resistência e virulência de Enterococcus spp. em fezes de morcegos urbanos Tadarida brasiliensis (Brazilian free-tailed bats)
(2019) [Artigo de periódico]O objetivo deste trabalho foi avaliar o perfil dos enterococos em amostras de fezes de morcegos urbanos Tadarida brasiliensis coletadas no Rio Grande do Sul. Fezes de morcegos foram coletadas e submetidas à identificação ... -
Diversity and arrangement of the cuticular structures of Hyalella (Crustacea : Amphipoda : Dogielinotidae) and their use in taxonomy
(2009) [Artigo de periódico]This study describes the morphology and arrangement of the cuticular structures of Hyalella castroi González, Bond-Buckup & Araujo, 2006 and Hyalella pleoacuta González, Bond-Buckup & Araujo, 2006, to identify specific ... -
Diversity and composition of tiger moths (Lepidoptera: Arctiidae) in an area of Atlantic Forest in southern Brazil : is the fauna more diverse in the grassland or in the forest?
(2012) [Artigo de periódico]The Atlantic Forest is considered a biodiversity hotspot for conservation, because its fauna and flora are highly endemic and suffer from loss of natural habitats. This study assessed the composition and diversity of tiger ... -
Diversity and enzyme production by yeasts isolated from raw milk in southern Brazil
(2004) [Artigo de periódico]O leite in natura é geralmente considerado um meio ideal para o crescimento de muitos microorganismos devido a sua riqueza nutritiva. Apesar de haver numerosos relatos da ocorrência de leveduras em produtos lácteos em todo ... -
Diversity and evolution of plant diacylglycerol acyltransferase (DGATs) unveiled by phylogenetic, gene structure and expression analyses
(2016) [Artigo de periódico]Since the first diacylglycerol acyltransferase (DGAT) gene was characterized in plants, a number of studies have focused on understanding the role of DGAT activity in plant triacylglycerol (TAG) biosynthesis. DGAT enzyme ... -
Diversity and evolution of stem structure in Eleocharis (Cyperaceae)
(2021) [Artigo de periódico]Eleocharis (Cyperaceae) includes more than 300 species of perennial or annual herbs, frequently found on poorly drained soils. The species are morphologicaly similar, and the taxonomy is difficult because their vegetative ... -
Diversity and population characteristics of terrestrial isopods (Crustacea, Oniscidea) across three forest environment in southern Brazil
(2014) [Artigo de periódico]Terrestrial isopods are important and dominant component of meso and macrodecomposer soil communities. The present study investigates the diversity and species composition of terrestrial isopods on three forests on the ...