Results 11 to 20 of about 87,597 (220)

Proximity to metal mining is related to aspects of feather coloration but not fluctuating asymmetry in the Russet‐crowned Motmot (Momotus mexicanus) in south‐central Mexico

Ibis, Volume 165, Issue 2, Page 587-601, April 2023., 2023
Mining is present in all major biomes worldwide and overlaps strongly with areas of importance for bird conservation. Mining causes multiple types of environmental disturbance, including habitat alteration, increased human presence and persistent heavy metal pollution. Feather coloration and fluctuating asymmetry (random deviation from perfect symmetry
Lynna Marie Kiere, Alejandro López‐Michelena, Marcela Osorio‐Beristain, Valentino Sorani, Adolfo G. Navarro‐Sigüenza, Luis A. Sánchez‐González   +5 more
wiley   +1 more source

Evolution of fruit and seed traits during almond naturalization

Journal of Ecology, Volume 110, Issue 3, Page 686-699, March 2022., 2022
Almond naturalization is consistent with strong directional selection on fruits and seeds, leading to smaller and more toxic seeds encased in harder endocarps. Accordingly, we propose that feralization of this crop is, at least to some degree, driven by adaptive evolution of dispersal and recruitment traits.
Andrés Barea‐Márquez, Francisco J. Ocaña‐Calahorro, Rodrigo Balaguer‐Romano, José María Gómez, Eugene W. Schupp, Raquel Sánchez‐Pérez, Jesús Guillamón, Joanna Zhang, Rafael Rubio de Casas   +8 more
wiley   +1 more source

Reproductive colonization of land by frogs: Embryos and larvae excrete urea to avoid ammonia toxicity

Ecology and Evolution, Volume 12, Issue 2, February 2022., 2022
Frogs have evolved terrestrial eggs many times, offering an excellent opportunity to assess traits that may facilitate aquatic‐to‐terrestrial transitions. Our results suggest the importance of physiological adaptations and physiological plasticity during early life stages, specifically the early onset of urea excretion, its upregulation under dry ...
Javier Méndez‐Narváez, Karen M. Warkentin   +1 more
wiley   +1 more source

Phase I/II study of adding intraperitoneal paclitaxel in patients with pancreatic cancer and peritoneal metastasis

BJS (British Journal of Surgery), Volume 107, Issue 13, Page 1811-1817, December 2020., 2020
This multicentre phase I/II study was undertaken to determine the recommended dose of the combination of intravenous gemcitabine, intravenous nab‐paclitaxel and intraperitoneal paclitaxel in patients with pancreatic ductal adenocarcinoma and peritoneal metastasis, and to evaluate its clinical efficacy and safety.
S. Yamada, T. Fujii, T. Yamamoto, H. Takami, I. Yoshioka, S. Yamaki, F. Sonohara, K. Shibuya, F. Motoi, S. Hirano, Y. Murakami, H. Inoue, M. Hayashi, K. Murotani, J. Kitayama, H. Ishikawa, Y. Kodera, M. Sekimoto, S. Satoi   +18 more
wiley   +1 more source

Methods of acute biological assays in guinea-pigs for the study of toxicity and innocuity of drugs and chemicals [PDF]

, 2010
In this study, 602 samples were tested by the following assays performed at the animal facilities (Cedeme) of the Federal University of São Paulo (UNIFESP): 385 for dermal irritability, 90 for ocular irritability (discontinued in 1995), 31 for systemic ...
Bertoncini, Clelia Rejane Antonio, Franco, Mirian Ghiraldini, Jurkiewicz, Aron, Jurkiewicz, Neide Hyppolito, Ko, Gui Mi, Rosenkranz, Adela   +5 more
core   +4 more sources

Toxicity in aquatic environments: discussion and evaluation methods [PDF]

, 2008
Aquatic toxicity tests are assays performed with different aquatic organisms of different ecological organization levels. Such tests are a source of information on the toxicity of a given substance or wastewater under controlled conditions, and they ...
BOTTA, Clarice M. R., COSTA, Carla Regina, ESPINDOLA, Evaldo L. G., OLIVI, Paulo   +3 more
core   +2 more sources

Conscientizando acerca da toxicidade de fármacos, inseticidas e corantes alimentícios artificiais por meio de ferramentas computacionais

ACTIO: Docência em Ciências, 2020
O ensino da disciplina Química Orgânica tem se tornado cada vez mais mecânico, com ênfase em memorização, e contribuído pouco para entender nosso entorno, ainda que estejamos vivenciando um período de grande produção na área de Ensino de Química.
Adriano Lopes Romero, David Lucas Zegolan Marcondes, Rafaelle Bonzanini Romero   +2 more
doaj   +1 more source

Nanopartículas no tratamento da doença de alzheimer

Millenium, 2022
Introdução: A Doença de Alzheimer é uma patologia neurodegenerativa primária, de etiologia desconhecida e influenciada por vários fatores com aspetos neuropatológicos e neuroquímicos característicos.
Luísa Cruz Lopes, Ana Lopes, Maria Escudeiro, Cláudia Duarte, Rafaela Ferreira, Francisco Graça, Isaura Silva, Bruno Esteves   +7 more
doaj   +1 more source

Evaluation of antibiotics as a methodological procedure to inhibit free-living and biofilm bacteria in marine zooplankton culture

Anais da Academia Brasileira de Ciências, 2016
There is a problem with keeping culture medium completely or partially free from bacteria. The use of prokaryotic metabolic inhibitors, such as antibiotics, is suggested as an alternative solution, although such substances should not harm non-target ...
Vanessa O. Agostini, Alexandre J. Macedo, Erik Muxagata   +2 more
doaj   +1 more source

Efeito de doses reduzidas de glyphosate e paraquat simulando deriva na cultura do milho Effect of reduced rates of glyphosate and paraquat simulating drift in corn crop

Planta Daninha, 2001
A aplicação de herbicidas, seja para a dissecação de culturas ou para o controle de plantas daninhas, vem crescendo, devido a expansão da fronteira agrícola brasileira.
P.C. Magalhães, J.B. Silva, F.O.M. Durães, D. Karam, L.S. Ribeiro   +4 more
doaj   +1 more source