Results 91 to 100 of about 187 (179)

The nitrogen dilemma: Toward a novel fertilization management framework for reconciling productivity and diversity in grasslands

Grassland Research, EarlyView.
Nitrogen fertilization raises grassland productivity but steadily undermines plant diversity. Instead of applying the same rate everywhere every year, the PRISM framework is designed to rotate high‐ and low‐nitrogen paddocks across the farm over time. This spatiotemporal cycling aims to maintain farm‐scale productivity while creating periodic windows ...
André Fischer Sbrissia, Marilia Barbosa Chiavegato, Daniel Augusto Barreta, Sila Carneiro Da Silva, Maria Gabriela Pittaro, Rodrigo Amorim Barbosa   +5 more
wiley   +1 more source

DESARROLLO Y MEDICIÓN DE SENSORES DE GASES BASADOS EN CAPACITORES MOS

Anales (Asociación Física Argentina), 2013
Los sensores de efecto de campo, con compuertas de metales catalíticos como Pt ó Pd, son dispositivos sensibles y selectivos a moléculas que contienen hidrógeno, completamente compatibles con la tecnología convencional de silicio.
D Filippini, R Aragón, U Weimar
doaj  

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

Effect of Zinc Oxide Nanoparticles From Infant Formula Milk Powder on Colon Cells In Vitro

Journal of Applied Toxicology, EarlyView.
ABSTRACT Zinc is an essential trace element that participates in numerous metabolic processes; however, excessive exposure may interfere with the absorption of other metals, such as copper. In recent years, nanotechnology has experienced rapid growth, and zinc oxide nanoparticles (ZnO NPs) have garnered significant attention due to their versatile ...
Gloria Salinas‐Lucero, Karla Juarez‐Moreno, Rafael Vazquez‐Duhalt   +2 more
wiley   +1 more source

Human Health Risk Assessment From Exposure to Toxic Metals in Soils and Leafy Vegetables in Smallholder Farms of Northeastern Brazil

Journal of Applied Toxicology, EarlyView.
ABSTRACT This study assessed human health risks associated with exposure to potentially toxic metals (PTMs) in soils and leafy vegetables cultivated in smallholder agricultural systems in Northeastern Brazil. Soil and vegetable samples were collected from 18 agricultural areas and analyzed for cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), nickel
Fernando Ferreira da Cunha Filho, Alex Souza Moraes, João Paulo Siqueira da Silva, Edvane Borges da Silva, Ademir Amaral, André Maciel Netto   +5 more
wiley   +1 more source

Evaluation of DNA/Chromosome Integrity and Cell Death in Human Metabolically Noncompetent and Competent Cells Exposed to N′‐(3,5‐Difluorobenzylidene)Pyridine‐4‐Carbohydrazide

Journal of Applied Toxicology, EarlyView.
ABSTRACT The N‐acylhydrazone scaffold is recognized as a privileged structure for the design of bioactive substances with increasing applications in medicinal chemistry research. Ensuring the safety of newly developed molecules is a critical step for both human health and environmental protection. Accordingly, this study aimed to evaluate the cytotoxic
Larissa Ribeiro Canuto Santos, Jéssica Natalia Barbosa de Almeida, Camila Cavalleiro Frias, Wanda Pereira Almeida, Edson Luis Maistro   +4 more
wiley   +1 more source

Parental Exposure to Nanoplastics and Graphene Oxide Induces Transgenerational Toxicity in Caenorhabditis elegans

Journal of Applied Toxicology, EarlyView.
ABSTRACT Environmental pollution by emerging contaminants such as nanoplastics (NPs) and graphene oxide (GO) represents a growing threat to global health and ecosystems. This study investigated the effects of parental exposure, both isolated and combined, to 100 μg/L NPs (polystyrene, spherical, 100 nm) and 100 mg/L GO, using Caenorhabditis elegans as ...
Gabriela Corrêa Soares, Larissa Müller, Suamy Machado Cruz, Andy Taipe Huisa, Danilo Roberto Carvalho Ferreira, Clascídia Aparecida Furtado, Juliane Ventura‐Lima   +6 more
wiley   +1 more source

The effect of calcium and magnesium on the aggregation of a purple phototrophic bacteria mixed consortium

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND An essential aspect of applying Purple Phototrophic Bacteria (PPB) technology for wastewater treatment is the biomass separation from the aqueous phase. Ca2+ and Mg2+ have been used to enhance the aggregation of different biological matrices. In this paper, the effect of Ca2+ and Mg2+ on the aggregation of a mixed culture of PPB was
Jairo M Carrillo‐Osorio, Germán Buitrón   +1 more
wiley   +1 more source

Hybrid Quatsome‐Encapsulated Silver Nanoparticles as Stable Plasmonic Substrates for Surface‐Enhanced Raman Scattering

Journal of Raman Spectroscopy, EarlyView.
In this work, silver nanoparticles encapsulated within quatsome membranes have shown to preserve their plasmonic properties for at least 165 days without aggregation. These hybrid nanostructures enable strong SERS enhancement of pyrene and Prodan by confining the molecules within a few nanometers from the silver surface.
Renato Cezar Peramezza Ribeiro, Caio Hiroaki Miyake, Pedro Henrique Figueiredo Backes Costa, Jhenifer Hallen Braga Mauricio, Ana Luiza Correa Januário, Diogo Soga, Evandro Luiz Duarte, Márcia de Almeida Rizzutto, Rômulo Augusto Ando, Antonio Rodrigues da Cunha, Erix Alexander Milán‐Garcés   +10 more
wiley   +1 more source

Inteligencia Artificial y Neurología: II Parte

Medicina, 1986
<p> </p><p>Algunos comentarios sobre la primera parte me han inducido a ampliar las bases de este trabajo mediante la presentación de aspectos comunes y conceptos disímiles sobre la hipotética relación entre inteligencia artificial (lA)
Mario Camacho Pinto
doaj