Results 21 to 30 of about 5,426 (130)

Juvenile and Pubertal Exposure to Polystyrene Nanoplastics Impairs Epididymal Structure and Sperm Quality in Mice

Environmental Toxicology, EarlyView.
ABSTRACT Nanoplastics (NPs) are emerging environmental contaminants capable of crossing biological barriers, accumulating in tissues, and disrupting physiological pathways. The male reproductive system is particularly vulnerable during the postnatal period, a developmental window characterized by intense testicular differentiation and epididymal ...
Gabriel Magalhães Oliveira Rigo, Nicoly Caixêta Gonçalves, Cristiana Livramento Oliveira Pinto, Patrícia Corona Lopes, Raul Silva Santarem, Juliana Reis Machado, Régia Caroline Peixoto Lira, Ana Paula Ramos, Marcos Vinicius da Silva, Hugo Felix Perini, Gláucia Eloisa Munhoz de Lion Siervo   +10 more
wiley   +1 more source

Certeza e Incerteza

Mises, 2017
O presente texto expõe a concepção misesiana sobre as diferenças entre os métodos das ciências naturais e as ciências da ação humana, ou praxiologia.
Ludwig von Mises
doaj   +1 more source

She Doesn't Whisper: Female‐Prominent Stridulation Shaped by Morphology in a Buthid Scorpion and Insights on Its Function

Ethology, EarlyView.
Sexual dimorphism and stress‐induced stridulatory responses in Jaguajir rochae (Borelli, 1910). Females exhibited greater absolute pectinal size and higher sound pressure levels, whereas males showed higher pectinal allometric ratios relative to body size, lower sound frequencies, and shorter delta times.
Welton Dionisio‐da‐Silva, Natália Maria Câmara Luna, Patrício Adriano da Rocha, Rodrigo Hirata Willemart, Marcio Bernardino daSilva   +4 more
wiley   +1 more source

Unravelling the skin of the nurse shark: A morphological description of the placoid scales of Ginglymostoma cirratum

Journal of Fish Biology, EarlyView.
Abstract Ginglymostoma cirratum, commonly known as the nurse shark, is a nocturnally active benthic shark, often found in western and eastern Atlantic waters. Although this shark has been well explored in many biological aspects, few studies have thoroughly examined the morphology of its dermal denticles (or placoid scales).
Danilo P. Lima, Aline. N. Poscai, Laura F. Mianutti, Nathalie. M. R. de Abreu, Jade Medeiros, Marcus V. G. Araújo, Frederico. B. de Sousa, João Paulo C. B. da Silva   +7 more
wiley   +1 more source

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

Journal 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, Raquel Lopes Queiroz, Cristiéle da Silva Ribeiro   +2 more
wiley   +1 more source

A sensory ecology approach to understanding snakebites: Influence of sensory cues on the strike of the lancehead pitviper

Journal of Zoology, EarlyView.
Snakes are notable for having a broad range of predators and one of the most diverse repertoires of defensive behaviors. During heightened responses to aversive stimuli, one of the behaviors displayed is the venomous bite, particularly relevant because it triggers snakebite incidents in humans.
J. M. Alves‐Nunes, A. Fellone, R. H. Willemart, O. A. V. Marques   +3 more
wiley   +1 more source

Redução de Ruídos Speckle no Mapeamento de Estruturas Lineares Submarinas em Imagens de Sonar de Abertura Sintética

Revista Brasileira de Cartografia, 2019
A utilização do sonar de abertura sintética no levantamento hidrográfico com veículo autônomo subaquático tem possibilitado o mapeamento de pequenos objetos em grandes profundidades.
Victor Hugo Fernandes, Nilcilene das Graças Medeiros, Dalto Domingos Rodrigues, Arthur Ayres Neto, Júlio César de Oliveira   +4 more
doaj   +1 more source

The metaphors in Truth and Heart: a comparative study of the phraseological lexicon from a parallel corpus

Signo, 2019
This paper aims to carry out the analysis of the phraseological lexicon formed by the words truth and heart and their translations into Portuguese taken from a parallel corpus composed by the subtitles in English and Portuguese of five seasons of the ...
Marilei Amadeu Sabino, Adriane Orenha-Ottaiano, Ariane Donizete Delgado Ribeiro Caldas   +2 more
doaj   +1 more source

Synthesis of Novel C‐Acyl‐Glycosyl Sulfonamides via Pd‐Catalyzed Carbonylative Coupling

European Journal of Organic Chemistry, Volume 29, Issue 23, 16 June 2026.
A Pd‐catalyzed carbonylative coupling of 1‐iodo‐glycals with diverse sulfonamides using Mo(CO)6 enables efficient access to C‐acyl‐glycosyl sulfonamides.This robust and versatile strategy delivers novel glycoside derivatives in good to excellent yields, highlighting their potential for drug discovery.
João A. F. Silva, Mônica F. Z. J. Toledo, Flávia Manarin, João H. de Araujo‐Neto, Milene M. Hornink, Hélio A. Stefani   +5 more
wiley   +1 more source

Spatial and temporal distribution patterns of ichthyoplankton in a region affected by water regulation by dams

Neotropical Ichthyology
The aim of this work was to study the occurrence of ichthyoplankton in a region affected by water regulation by dams. The study area was located in the region of Ilha Grande National Park, upper Paraná River floodplain.
Tatiane M Gogola, Vanessa S Daga, Pedro R. L. da Silva, Paulo V Sanches, Éder A Gubiani, Gilmar Baumgartner, Rosilene L Delariva   +6 more
doaj   +1 more source