Results 61 to 70 of about 96,473 (198)

Climate‐driven resource availability drives medium‐ and broad‐scale temporal changes in owl–prey interactions over 24 years in a semi‐arid ecosystem

Ecography, EarlyView.
Predator–prey interactions are vital to ecosystem functioning but may be disrupted by climate change. We investigated a food‐web network involving three owl species over 24 years in a semi‐arid ecosystem at Bosque Fray Jorge National Park, Chile.
Jazmin M. Quiroz‐Calizaya, Adriana Lozada, Douglas A. Kelt, Alejandra J. Troncoso, Peter L. Meserve, M. Andrea Previtali, W. Bryan Milstead, Julio R. Gutiérrez, Craig Weideman, Nicolas Gouin, Tyler R. Kartzinel, Karin Maldonado, Angéline Bertin   +12 more
wiley   +1 more source

Chilean jagged lobster, Projasus bahamondei, in the southeastern Pacific Ocean: current state of knowledge

Latin American Journal of Aquatic Research, 2014
The Chilean jagged lobster (Projasus bahamondei) is a deep-water crustacean (175-550 m) occurring in certain areas of the southeastern Pacific Ocean, including the Nazca Ridge, Desventuradas Islands, the Juan Fernandez archipelago and ridge, and the ...
Patricio M Arana
doaj  

Experiencias en el proceso enseñanza-aprendizaje de la biología en nuestro país

Ciencia y Sociedad, 1986
Este texto muestra el proceso enseñanza-aprendizaje en nuestro país en biología, siendo este más efectivo si somos capaces de disponer de ideas e inquietudes que integren al estudiante al quehacer directo de la biología. Por tanto el proceso de enseñanza-
Manuel de Jesús Valdez Ramírez
doaj   +1 more source

Antarctic soil microbiomes encode structurally conserved and phylogenetically diverse beta‐lactamases

iMetaOmics, EarlyView.
An integrative metagenomic framework combining sequence, structural, and functional inference reveals a phylogenetically diverse and structurally conserved repertoire of putative beta‐lactamases across Antarctic soil microbiomes, with predominance of class A and subclass B3 enzymes and limited but detectable associations with mobile genetic elements ...
José Coche‐Miranda, Patricio Arros, Nicolás Canales, Camilo Berríos‐Pastén, Gastón Azziz, Rosalba Lagos, Julieta Orlando, Francisco P. Chávez, Andrés E. Marcoleta   +8 more
wiley   +1 more source

Subchronic Exposure to Arsenic and Nickel Triggers Nitrosative Stress and Histological Alterations in the Rat Liver

Journal of Applied Toxicology, EarlyView.
ABSTRACT Environmental exposure to heavy metals poses a threat to human health. Several studies documented harmful effects on the liver after arsenic and nickel exposure at concentrations beyond permissible limits. Nevertheless, the impact of a simultaneous exposure to both elements on hepatic biochemistry and histology remains unelucidated. Therefore,
Thainá Iasbik‐Lima, Luiz Otávio Guimarães‐Ervilha, Isabela Pereira da Silva Bento, Renê Chagas da Silva, Mariana Machado‐Neves   +4 more
wiley   +1 more source

RACISMO CIENTÍFICO, PROCESOS DE ALTERIZACIÓN Y ENSEÑANZA DE CIENCIAS

Magis: Revista Internacional de Investigación en Educación, 2013
Este trabajo propone el desarrollo de intervenciones didácticas que usen la historia del racismo científico —y la posterior deconstrucción del concepto biológico de raza por parte de la Genética moderna— como punto de partida para reflexionar sobre la ...
Juan Manuel Sánchez-Arteaga, Cláudia Sepúlveda, Charbel N. El-Hani   +2 more
doaj  

Formulation‐Dependent Cytotoxic Effects of Commercial and Analytical‐Grade Mancozeb in C6 Glial Cells

Journal of Applied Toxicology, EarlyView.
ABSTRACT Mancozeb (MZ) is a widely used dithiocarbamate fungicide composed of manganese (Mn) and zinc (Zn) complexes. Increasing concern has been raised regarding its occupational and human health relevance, particularly due to its neurotoxic potential associated with Mn‐related cellular dysfunction.
Lavínia Lazzarotti, Felipe Vanz, Karina Giacomini Varela, Viviane Glaser, Diego de Carvalho, Aline Pertile Remor   +5 more
wiley   +1 more source

Biological Effects of Selenium‐Containing Ionic Liquids: Cytotoxicity, Mercury Interaction, and Antiproliferative Activity in Glioblastoma Cells

Journal of Applied Toxicology, EarlyView.
ABSTRACT Selenium (Se) is an essential micronutrient that participates in redox regulation and cellular homeostasis. Selenium‐containing ionic liquids (ILsSe) have emerged as hybrid compounds combining the properties of organoselenium molecules with the tunable features of ionic liquids.
Guilherme Schmitt Rieder, Alessandro de Souza Prestes, Fernanda D'Avila da Silva, Nilda de Vargas Barbosa, Alix Y. Bastidas Ángel, Mariana F. Soares, Carolina Martins Fernandes, Maria Anttônia Oliveira Petersen, Manuela Moura Silva, Juliete Nathali Scholl, Fabrício Figueiró, Pablo Andrei Nogara, Laura Orian, Eduardo E. Alberto, Michael Ascnher, Diogo Onofre Gomes de Souza, Debora Guerini de Souza, João Batista Teixeira da Rocha   +17 more
wiley   +1 more source

APLICACIONES DE LAS RADIACIONES ELECTROMAGNÉTICAS NO IONIZANTES (RNI) EN PROYECTOS INTERDISCIPLINARES DE INVESTIGACIÓN UPSE

Revista Científica y Tecnológica UPSE, 2016
Se analizan los proyectos de investigación que se están desarrollando en la Escuela de Electrónica y Telecomunicaciones en Aplicaciones de las Radiaciones electromagnéticas no ionizantes en la interface tecnología, biología y biofísica.
Nestor Minhuey
doaj  

Exposure–Recovery Approach for Hepatic Toxicity Analysis of Pyrethroid Lambda‐Cyhalothrin: Histopathological, Histochemical, and Biochemical Responses in Oreochromis niloticus

Journal of Applied Toxicology, EarlyView.
ABSTRACT Lambda‐cyhalothrin is a synthetic pyrethroid insecticide widely used in agriculture, but its potential to contaminate aquatic ecosystems and exert high toxicity on fish at low concentrations raises ecotoxicological concerns. While standard histopathological and biochemical assessments are common, the novel integration of pigment‐based ...
Carlos Eurico Fernandes, André Luiz do Nascimento Silva, Tiago Venancio da Silva, Karine Nathiele Nogueira Farias, Sabrina Fuzer Gonçalves, Brenda de Oliveira Martins, Maria Eduarda Corona Garcia, Lilian Franco‐Belussi   +7 more
wiley   +1 more source