Results 21 to 30 of about 12,460 (155)

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Synthesis and application of alginate@CuFe2O4 polymeric spheres in 17‐β‐estradiol adsorption processes in Amazonian rivers

Polymer International, EarlyView.
Magnetic alginate beads, functionalized with copper ferrite, effectively remove 17‐β‐estradiol from Amazonian water, exhibiting optimized 238.65 μg g−1 capacity, fast 40 min kinetics, easy recovery, and successful remediation. Abstract The presence of endocrine‐disrupting compounds, such as 17‐β‐estradiol, in aquatic ecosystems poses a significant ...
Dante S Silva, Adriano R. S Silva, Yasmin S Medeiros, José R Santos Neto, Jamily L dos Santos, Ananias L dos Santos, Roberta L. S Bernardino, Giulian César S Sá, Leandro A Pocrifka, Sidnei C dos Santos, Emilly C Silva   +10 more
wiley   +1 more source

Brown–Proschan Repair Policy for Repairable Systems Using the Discrete Weibull Failure Distribution and Markov Chains

Quality and Reliability Engineering International, EarlyView.
ABSTRACT A repairable system operates under a maintenance strategy involving scheduled preventive maintenance (PM) and corrective repair actions following failures. This study develops an exact analytical methodology using Markov chains with discrete states and time to calculate the expected number of failures E[N(t)]$\mathop {\mathbb {E}}[N(t)]$ under
Danilo G. O. Valadares, Roberto C. Quinino, Linda L. Ho, Frederico R. B. Cruz   +3 more
wiley   +1 more source

Tumor Fibro-histiocítico Plexiforme de Vulva: Relato de Caso

Revista Brasileira de Cancerologia, 2021
Introdução: O tumor fibro-histiocítico plexiforme é uma condição clínica rara, com cerca de 150 casos descritos na literatura. Relato do caso: Paciente, 23 anos, sexo feminino, portadora de lesão nodular em região vulvar sem características de ...
Aluisio Juliano Baumgartner, Fernanda Stefania Bastos Garcia, Lia Mizobe Ono, Érica Condé Marques e Oliveira, William Hiromi Fuzita, Caroline Souza dos Anjos   +5 more
doaj   +1 more source

Illegal Gold Mining in the Brazilian Amazon: Environmental Degradation in Yanomami Indigenous Lands, and Regulatory Failures

Sustainable Development, EarlyView.
ABSTRACT Illegal gold mining has emerged as a major sustainability threat in the Amazon, eroding Indigenous rights, forest integrity, and climate mitigation efforts. This study examines how international market incentives relate to the expansion of illegal mining and associated deforestation within the Yanomami Indigenous Territory (YIT) from 2008 to ...
Shirléia Lago Santos, Ana Claudia de Araujo Moxotó, Jurandir Moura Dutra   +2 more
wiley   +1 more source

Gross Agricultural Emissions and Unequal Mitigation Pathways in the Brazilian Legal Amazon: Implications for Climate Justice and the Sustainable Development Goals

Sustainable Development, EarlyView.
ABSTRACT Climate mitigation policies in the Brazilian Legal Amazon have largely focused on aggregate or net emissions, providing limited evidence on how gross agricultural emissions reveal the intensity of productive emission sources independently of carbon removals.
Jorge Eduardo Macedo Simões, Marcelo Bentes Diniz, Márcia Jucá Texeira Diniz, Vanessa da Paixão Alves, Cynthia Simmons   +4 more
wiley   +1 more source

Sulfasalazine Enhances Copper Toxicity in Danio rerio Larvae: Divergent Protective Roles of Deferoxamine and Ferrostatin‐1

Environmental Toxicology, EarlyView.
ABSTRACT Copper is an environmental contaminant capable of disrupting redox homeostasis and impairing antioxidant defenses in aquatic organisms, thereby increasing susceptibility to oxidative stress. The cystine/glutamate antiporter (system xc−) plays a central role in maintaining intracellular glutathione (GSH) levels, a major antioxidant defense ...
Maria Vitória Takemura Mariano, Pedro Henrique Vicenzi, Vitor Oliveira de Rosso, Mauro Eugênio Medina Nunes, Layla da Silva Braga, Analía Del Valle Garnero, Ricardo José Gunski, Marcelo Farina, Thaís Posser, Jeferson Luis Franco   +9 more
wiley   +1 more source

First insights into the movement patterns of maned wolf with sarcoptic mange

Wildlife Biology, EarlyView.
Understanding how infectious diseases influence wildlife behavior, particularly in habitats undergoing modification, is crucial for predicting disease outbreaks, assessing impacts on population fitness, and mitigating human health risks. Sarcoptic mange can alter wildlife movement and space use, yet its effects on threatened carnivores remain unclear ...
Ana Yoko Ykeuti Meiga, Paula R. Prist, Beatriz Amaro, Ricardo Corassa Arrais, Marcos Roberto Monteiro de Brito, Rodrigo Campanha, Danilo Costa, Ingrid Galiano, Paulo Rogerio Mangini, Luana Mamede, Louise Maranhão, Cesar Medolago, Tatiane Moreira, Raphael de Oliveira, Camylla Silva Pereira, Andrea Pires, Herbert Sousa Soares, João Valsecchi, Fernanda Abra   +18 more
wiley   +1 more source

New traps for the capture of Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) (Diptera: Culicidae) eggs and adults.

PLoS Neglected Tropical Diseases, 2021
The control of arboviruses carried by Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) can be performed with tools that monitor and reduce the circulation of these vectors. Therefore, the efficiency of four types of traps in capturing A. aegypti and
Karina Rossi da Silva, William Ribeiro da Silva, Bianca Piraccini Silva, Adriano Nobre Arcos, Francisco Augusto da Silva Ferreira, Joelma Soares-da-Silva, Grafe Oliveira Pontes, Rosemary Aparecida Roque, Wanderli Pedro Tadei, Mário Antonio Navarro-Silva, João Antonio Cyrino Zequi   +10 more
doaj   +1 more source

Uneven Culturable Yeast Communities Harbored by Two Sympatric Stingless Bee Species: Scaptotrigona depilis and Tetragona clavipes

Yeast, EarlyView.
To explore the yeast diversity associated with Brazilian stingless bees, we collected samples from bees and their provisions. Sympatric bee species harbor distinct yeast communities, providing insights into bees' foraging choices. Moreover, these communities are dominated by specific taxa with similar metabolic profiles.
Rodolfo Bizarria Jr., Ana Ligia Leandrini de Oliveira, Bárbara Gimenes de Castro, Mônica Tallarico Pupo   +3 more
wiley   +1 more source