Results 41 to 50 of about 48,680 (183)

Ética e pesquisa

open access: yesActa Cirúrgica Brasileira, 2008
OBJETIVO: O presente artigo tem por objetivo explanar os aspectos éticos das experimentações em seres humanos e animais. CONTEÚDO: O tema abordado é de suma importância, pois almeja-se que o ser humano atinja seu bem-estar físico, mental, social e ...
Taylor Brandão Schnaider
doaj   +1 more source

Situación jurídica de los animales y propuestas de modificación en el Congreso de la Nación Brasileña [PDF]

open access: yes, 2017
A história humana é marcada pela interação com animais, os quais estão diretamente relacionados a várias temáticas da história social, econômica, material, cultural, religiosa e simbólica.
Cornelli, Gabriele   +1 more
core   +1 more source

Occurrence of multiple congenital anomalies in Potamotrygon amandae (Elasmobranchii, Potamotrygoninae) embryos, including the first report of bicephaly

open access: yesJournal of Fish Biology, EarlyView.
Abstract Reports of teratogenic embryos in elasmobranchs have been documented in multiple species, with proposed aetiologies including environmental disturbances, genetic mutations, predation, exposure to endocrine‐disrupting compounds and maternal stress.
Douglas de Castro Ribeiro   +2 more
wiley   +1 more source

Obtenção do tamanho amostral em experimentos com animais usando medidas repetidas. [PDF]

open access: yes, 2015
Na experimentação animal envolvendo medidas repetidas, e fundamental a combinações ótima do tamanho amostral (n), numero de avaliações do indivíduo e precisão experimental. O objetivo deste trabalho e estimar n para comparar dois ou mais tratamentos onde
ESTEVES, S. N.   +2 more
core  

Hybridization, Maternal Inheritance, and Evolutionary Time of Divergence of Endangered Species of Hypancistrus (Siluriformes: Loricariidae) in the Xingu River

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
We uncover recent hybridization dynamics among three endemic Hypancistrus species from the Xingu River, including the critically endangered H. zebra. Mitogenomic analyses reveal unidirectional maternal inheritance and recent evolutionary radiation (< 0.5 Ma), explaining their retained reproductive compatibility.
Franciele F. Kerniske   +4 more
wiley   +1 more source

Cinnamomum zeylanicum, Origanum vulgare, and Curcuma longa Essential Oils: Chemical Composition, Antimicrobial and Antileishmanial Activity

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2019, Issue 1, 2019., 2019
The resistance mechanisms of bacteria and protozoans have evidenced the need of discover new compounds with potential pharmaceutical activity against pathogenic microorganisms. Medicinal plants have been for centuries a promising alternative as sources of new drugs.
Amanda Mara Teles   +6 more
wiley   +1 more source

Endothelial Protein C Receptor Could Contribute to Experimental Malaria‐Associated Acute Respiratory Distress Syndrome

open access: yesJournal of Immunology Research, Volume 2019, Issue 1, 2019., 2019
The severity of Plasmodium falciparum malaria is associated with parasite cytoadherence, but there is limited knowledge about the effect of parasite cytoadherence in malaria‐associated acute respiratory distress syndrome (ARDS). Our objective was to evaluate the cytoadherence of infected red blood cells (iRBCs) in a murine model of ARDS and to appraise
Luana dos Santos Ortolan   +9 more
wiley   +1 more source

Utilização de animais em pesquisas: breve revisão da legislação no Brasil

open access: yesRevista Bioética
Resumo A utilização de animais para fins científicos configura prática histórica na civilização humana, mas gera polêmica em sociedades preocupadas com proteção dos animais. No Brasil, até 2008, não havia norma ou lei que regulamentasse especificamente a
Mariana Vasconcelos Guimarães   +2 more
doaj   +1 more source

Trabalho com camundongos em pesquisa imunológica. Ligação, emoções e cuidado

open access: yesRECIIS, 2008
Este ensaio descreve e reflete sobre algumas características típicas da relação entre pesquisadores e animais nos cená- rios de experimentação animal científica.
Daniel Bischur
doaj   +1 more source

Local Environmental Variables Predict Fish Species Richness and Composition in Sand Beaches of a Neotropical River

open access: yesRiver Research and Applications, Volume 41, Issue 9, Page 1949-1958, November 2025.
ABSTRACT Local and regional species diversity is influenced by historical factors, resource availability, biotic interactions, the presence of resources, and adequate environmental conditions. We evaluated the effects of local environmental variables and spatial structure on fish species richness and composition along sandy beaches of a Neotropical ...
Ronaldo Souza da Silva   +8 more
wiley   +1 more source

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