Results 41 to 50 of about 1,982 (155)

Atributos físicos e estoques de carbono do solo sob diferentes usos da terra em Rondônia, Amazônia Sul-Ocidental

Pesquisa Florestal Brasileira, 2017
Objetivou-se estudar o comportamento dos atributos físicos e dos teores e estoques de carbono do solo em sistema agroflorestal multiestratificado (SAF), comparativamente a diferentes modalidades de uso solo, sendo elas o cultivo de cacaueiro sob manejo ...
Adriano Reis Prazeres Mascarenhas, Marta Silvana Volpato Sccoti, Rafael Rodolfo Melo, Fernando Luíz de Oliveira Corrêa, Emanuel Fernando Maia de Souza, Reginaldo Almeida Andrade, Anderson Cristian Bergamin, Manfred Willy Müller   +7 more
doaj   +1 more source

Prevalence of insulin dysregulation in a sport horse population as determined by traditional and stall‐side testing

Equine Veterinary Journal, EarlyView.
Abstract Background The prevalence of insulin dysregulation (ID) has not been investigated in sport horses. Stall‐side insulin assays offer convenience but need further validation. Objectives To determine the prevalence of and risk factors for ID in a sport horse population using an oral sugar test (OST) and assess agreement between stall‐side and ...
Kimberly L. Hallowell, Caitlyn R. Horne, Cary S. Miller, Sara R. Tufts, Katarzyna Dembek, Kim R. Love, Andrew W. van Eps, Lauren V. Schnabel   +7 more
wiley   +1 more source

New Approach Methodologies (NAMs) in Alternative Methods: A Comparative Cytotoxicity Analysis of Nanostructured Hydroxyapatite in Adipose Stem Cells Spheroids

Journal of Applied Toxicology, EarlyView.
ABSTRACT Toxicological assessment is essential in NP approval for health and medical applications. Although 2D cell culture has been widely used, 3D models, especially spheroids, provide better predictive value for toxicological risk assessments since they replicate complex cellular interactions more accurately.
Bianca Montenegro, Rosângela Mayer Gonçalves, Marcelle Gomes Pegurier, Isabelle Amorim, Alexandre Malta Rossi, Leandra Santos Baptista   +5 more
wiley   +1 more source

Argila dispersa em água e grau de floculação de um Latossolo sob gramíneas no Brejo da Paraíba (Brasil)

Revista Brasileira de Meio Ambiente, 2019
O conhecimento da textura é importante, devido a sua estreita relação com o uso e manejo dos solos, por indicar qual a melhor forma de aplicação da água em sistemas produtivos, na troca catiônica, na avaliação da dinâmica de nutrientes e poluentes no ...
Alícia Brasiliano Barreto, Danillo Dutra Tavares, Pedro Luan Ferreira da Silva, Flávio Pereira de Oliveira, Adriana Ferreira Martins, Walter Esfrain Pereira   +5 more
doaj  

Effects of tillage systems on physical properties of a cohesive yellow argisol in the northern state of Espírito Santo, Brazil

Revista Brasileira de Ciência do Solo, 2013
Tillage systems are a key element of the technology of crop production, both with a view to crop yield and from the perspective of soil conservation and sustainability of the production system.
Valmir José Zuffo, Fabio Ribeiro Pires, Robson Bonomo, Edney Leandro da Vitória, Ademar Celin Filho, Eduardo Oliveira de Jesus Santos   +5 more
doaj   +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

Propriedades físicas do solo e produtividade de arroz irrigado por inundação no sistema plantio direto

Pesquisa Agropecuária Brasileira, 2010
O objetivo deste trabalho foi avaliar as propriedades físicas do solo e a produtividade de arroz irrigado por inundação no sistema plantio direto, na fronteira oeste do Rio Grande do Sul, em comparação ao sistema convencional.
Janete Denardi Munareto, Amauri Nelson Beutler, Cleiton José Ramão, Naimã Pinto Dias, Priscila Vogelei Ramos, Bruna Canabarro Pozzebon, Cleber Maus Alberto, Gustavo Cantori Hernandes   +7 more
doaj   +1 more source

Optically Bound Rapid Plasmonic Nanorod Dimers: Anisotropic Dynamics Driven by Light‐Fluidic Cooperation

Laser &Photonics Reviews, EarlyView.
Optically confined gold nanorods exhibit cooperative light‐driven dynamics, forming mobile end‐to‐end dimers with orientation‐dependent propulsion. Using structured laser traps and an opto‐thermo‐hydrodynamic model, we uncover how optical binding, polarization‐induced torque, and near‐surface hydrodynamics govern their motion.
José A. Rodrigo, Tatiana Alieva
wiley   +1 more source

Variabilidade espaço-temporal da temperatura e difusividade térmica do solo de Lagoa Seca-PB

Revista Ambiente & Água, 2014
O objetivo deste trabalho foi investigar a variabilidade espaço-temporal da temperatura e difusividade térmica do solo de Lagoa Seca-PB. Para alcançar este objetivo foram utilizados sensores de temperatura, programados a operar ininterruptamente ao longo
Júlio Mannuel Tavares Diniz, Renilson Targino Dantas, José Fideles Filho   +2 more
doaj   +1 more source

Multimode Phonon Lasing via Self‐Induced Optical Coherent Pumping

Laser &Photonics Reviews, EarlyView.
A silicon optomechanical nanobeam generates self‐sustained phonon lasing in multiple competing mechanical modes via self‐pulsing, an intrinsic optical modulation arising from cavity nonlinearity. This self‐organized mechanism enables robust multi‐frequency operation spanning periodic, quasi‐periodic, and chaotic regimes without external modulation. The
David Alonso Tomás, Carlos Mas Arabí, Carles Milián, Néstor E. Capuj, Alejandro Martínez, Daniel Navarro Urrios   +5 more
wiley   +1 more source