Browsing Biological Sciences by Title
Now showing items 2403-2422 of 3052
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Redescription of the type species of Odontostilbe Cope, 1870 (Teleostei : Characidae : Cheirodontinae), and description of three new species from the Amazon basin
(2006) [Journal article]O queirodontíneo neotropical Odontostilbe fugitiva, de ampla distribuição, é revisado e três espécies novas são descritas para o gênero na bacia Amazônica. Um neótipo é designado para O. fugitiva, da boca do rio Mazán, ... -
Redes de coautoria identificadas na produção científica em programa de pós-graduação da Universidade Federal do Rio Grande do Sul
(2014) [Journal article]O aumento da colaboração científica caracterizada pela coautoria é uma das principais tendências verificadas nos últimos anos na produção em ciências. A fim de relacionar a coautoria e a produção dos docentes do Programa ... -
Redox biology of human cumulus cells : basic concepts, impact on oocyte quality, and potential clinical use
(2020) [Journal article]Significance: Four decades have passed since the first successful humanembryo conceived froma fertilization in vitro. Despite all advances, success rates in assisted reproduction techniques still remain unsatisfactory and ... -
Red pepper peptide coatings control Staphylococcus epidermidis adhesion and biofilm formation
(2020) [Journal article]Medical devices (indwelling) have greatly improved healthcare. Nevertheless, infections related to the use of these apparatuses continue to be a major clinical concern. Biofilms form on surfaces after bacterial adhesion, ... -
Red swamp crayfish : biology, ecology and invasion - an overview
(2015) [Journal article]Alien species have been transported and traded by humans for many centuries. However, with the era of globalization, biological invasions have reached notable magnitudes. Currently, introduction of alien species is one of ... -
Redução de cromo hexavalente por bactérias isoladas de solos contaminados com cromo
(2007) [Journal article]A redução do Cr(VI) para Cr(III) diminui a toxidade deste metal no ambiente, uma vez que o Cr(III) é insolúvel às membranas biológicas. Assim, a redução microbiana do Cr(VI) é uma alternativa para reduzir os impactos ... -
Reduced fronto-striatal volume in attention-deficit/hyperactivity disorder in two cohorts across the lifespan
(2020) [Journal article]Attention-Deficit/Hyperactivity Disorder (ADHD) has been associated with altered brain anatomy in neuroimaging studies. However, small and heterogeneous study samples, and the use of region-of-interest and tissuespecific ... -
Reduced genetic variability within coding and non-coding regions of the echinococcus multilocularis genome
(1997) [Journal article]Echinococcus multilocularis, a vulpine intestinal tapeworm, is the causative agent of alveolar echinococosis in humans, one of the most severe and lethal parasitic infections in man. To date, there is very little knowledge ... -
Reduced neurite density in neuronal cell cultures exposed to serum of patients with bipolar disorder
(2016) [Journal article]Background: Increased inflammatory markers and oxidative stress have been reported in serum among patients with bipolar disorder (BD). The aim of this study is to assess whether biochemical changes in the serum of patients ... -
Redundancy and recombination in the Echinococcus AgB multigene family : is there any similarity with protozoan contigency genes?
(2006) [Journal article]Numerous genetic variants of the Echinococcus antigen B (AgB) are encountered within a single metacestode. This could be a reflection of gene redundancy or the result of a somatic hypermutation process. We evaluate the ... -
Reemergence of human malaria in Atlantic Forest of Rio Grande do Sul, Brazil
(2021) [Journal article]Unforeseen Plasmodium infections in the Atlantic Forest of Brazilian Extra-Amazonian region could jeopardise malaria elimination. A human malaria case was registered in Três Forquilhas, in the Atlantic Forest biome of Rio ... -
Re-evaluation of the generic status of Athenaea and Aureliana (Withaniinae, Solanaceae) based on molecular phylogeny and morphology of the calyx
(2015) [Journal article]Subtribe Withaniinae (Solanaceae) comprises seven genera and c. 40 species, with an almost cosmopolitan distribution. Athenaea and Aureliana are exclusively South American, with diversity centres in the Brazilian Atlantic ... -
A reevaluation of the native american MtDNA genome diversity and its bearing on the models of early colonization of Beringia
(2008) [Journal article]The Americas were the last continents to be populated by humans, and their colonization represents a very interesting chapter in our species’ evolution in which important issues are still contentious or largely unknown. ... -
Reference gene selection for quantitative reverse transcription-polymerase chais reaction normalization during in vitro adventitious rooting in Eucaliptus globulus Labill
(2010) [Journal article]Background: Eucalyptus globulus and its hybrids are very important for the cellulose and paper industry mainly due to their low lignin content and frost resistance. However, rooting of cuttings of this species is recalcitrant ... -
Reference values and drivers of diversity for South Brazilian grassland plant communities
(2022) [Journal article]The South Brazilian grasslands (Campos Sulinos) form the dominant vegetation in southern Brazil. They are species-rich ecosystems that occur under distinct geomorphological and climatic conditions but spatial variation of ... -
Regeneração de plantas a partir de segmentos de base de folhas em aveia
(2001) [Journal article]A regeneração de plantas in vitro é uma limitação encontrada na maioria dos cereais. Uma forma de minimizar essa dificuldade tem sido a busca de fontes alternativas de tecidos com habilidade para esse fim. O objetivo deste ... -
Regeneration of soybean via embryogenic suspension culture
(2001) [Journal article]Com o objetivo de estabelecer um sistema alternativo de regeneração de plantas para cultivares de soja [Glycine max (L.) Merrill] utilizadas em programas de melhoramento no Brasil, dez genótipos foram testados quanto ao ... -
Regionalization of oviducts in Boophilus microplus, (Canestrini, 1887) : (Acari: Ixodidae) and its potential significance for fertilization
(1999) [Journal article]The structural analysis of oviducts in Boophilus microplus (Canestrini, 1887) in different stages of ingurgitation has indicated that they are constituted primarily of an internal cylinder and an external cylinder with ... -
Registro de Artibeus lituratus (Olfers, 1818) (Chiroptera: Phyllostomidae) positivo para o vírus rábico no Estado do Rio Grande do Sul, Brasil
(2010) [Journal article]O presente trabalho apresenta dois casos de morcegos frugívoros da espécie Artibeus lituratus (Mammalia: Chiroptera: Phyllostomidae), infectados pelo vírus rábico no estado do Rio Grande do Sul, Brasil. O isolado dos vírus ... -
Regulation of lung oxidative damage by endogenous superoxide dismutase in sepsis
(2014) [Journal article]Background: The purpose of this research is to study the relationship between superoxide dismutase (SOD) and lung redox state in an animal model of sepsis. Methods: Sepsis was induced in rats by the cecal ligation and ...