Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Brivaldo Gomes de Almeida"'
Autor:
Joez André de Moraes Rodrigues, Thais Emanuelle Monteiro dos Santos, Edivan Rodrigues de Souza, Marcelo Metri Corrêa, Brivaldo Gomes de Almeida, Irivânia Fidelis da Silva Aguiar
Publikováno v:
Dyna, Vol 88, Iss 217 (2021)
The lack of cover is one of the main accelerators of soil degradation. Without protection and exposed to rainfall, the soil breaks the particles, causing surface sealing, making infiltration difficult. This study characterizes surface sealing and hyd
Externí odkaz:
https://doaj.org/article/b25e5956e8bc4f478b8d1eb16089cc63
Autor:
Ceres Duarte Guedes Cabral de Almeida, Denize Maria Oliveira Silva, Brivaldo Gomes de Almeida, Ênio Farias de França e Silva, Rebeca Neves Barbosa, José Amilton Santos Júnior
Publikováno v:
Dyna, Vol 85, Iss 207, Pp 60-64 (2018)
Frequency domain reflectometry (FDR) is widely used to measure the soil water contents. However, the soil composition effects on FDR calibration has to be quantified to reduce the need for further calibration. Our objectives were to (1) evaluate the
Externí odkaz:
https://doaj.org/article/09320381f58c48ea974e0ce744fc3dfc
Autor:
Hidelblandi Farias de Melo, Edivan Rodrigues de Souza, Pablo Rugero Magalhães Dourado, Cíntia Maria Teixeira Lins, Hugo Rafael Bentzen Santos, Danilo Rodrigues Monteiro, Martha Katharinne Silva Souza Paulino, Brivaldo Gomes de Almeida, Monaliza Alves dos Santos
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 44 (2020)
ABSTRACT Drought and soil salinity are the main abiotic stresses in semiarid regions of the world. This study aims to evaluate the effect of water tensions generated by the reduction of soil moisture and salt on the leaf water potential of cowpea (Vi
Externí odkaz:
https://doaj.org/article/9bc569c28f014fde99ede0b4e0e2a713
Autor:
Maria Salomé de Lima, Fernando José Freire, Luiz Carlos Marangon, Brivaldo Gomes de Almeida, Eberson Pessoa Ribeiro, Renato Lemos dos Santos
Publikováno v:
Ciência Florestal, Vol 28, Iss 2, Pp 542-553 (2018)
The forest remnant that composes ‘Parque Estadual Dois Irmãos’ (PEDI) is regarded as one of the largest urban forest fragments in Brazil. There are reports of frequent occurrence of healthy fall trees in the park, in natural conditions, which ma
Externí odkaz:
https://doaj.org/article/d0671d38c1754cfea096294d18e116de
Autor:
Valerio Ferreira Marcelo, Brivaldo Gomes de Almeida, José Coelho de Araújo Filho, Wagner Luis da Silva Souza
Publikováno v:
Revista Brasileira de Ciências Ambientais, Iss 42, Pp 12-25 (2016)
Os Tabuleiros Costeiros possuem camadas coesas de solos que alteram o estado da água nos seus poros, interferindo no desenvolvimento do sistema radicular das plantas. Este estudo objetivou avaliar a ação dos condicionadores poliacrilamida (PAM) e
Externí odkaz:
https://doaj.org/article/a49cae06750647fcba943502e4365708
Autor:
Giuseppe Provenzano, Giovanni Rallo, Ceres Duarte Guedes Cabral de Almeida, Brivaldo Gomes de Almeida
Publikováno v:
Water, Vol 12, Iss 12, p 3414 (2020)
This study aimed to develop a new model, valid for soil with and without expandable characters, to estimate volumetric soil water content (θ) from readings of scaled frequency (SF) acquired with the Diviner 2000® sensor. The analysis was carried ou
Externí odkaz:
https://doaj.org/article/ec402b8ed44e49a59973246d52e047f9
Autor:
Diego Vandeval Maranhão de Melo, Brivaldo Gomes de Almeida, Edivan Rodrigues de Souza, Laércio Santos Silva, Paulo Klinger Tito Jacomine
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 38, Iss 2, Pp 476-485 (2014)
Water-soluble polymers are characterized as effective flocculating agents due to their molecular features. Their application to soils with horizons with structural problems, e.g, a cohesive character, contributes to improvements in the physical quali
Externí odkaz:
https://doaj.org/article/07f88aa8456041958f0ec52e3f061a9c
Autor:
Getulio Coutinho Figueiredo, Alvaro Pires da Silva, Cássio Antonio Tormena, Neyde Fabíola Balarezo Giarola, Sergio Oliveira Moraes, Brivaldo Gomes de Almeida
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 35, Iss 2, Pp 389-402 (2011)
A compactação é um dos processos responsáveis pela degradação física do solo que pode ocasionar a perda da sustentabilidade da produção agrícola. Assim, é fundamental dispor de estratégias instrumentais para quantificar as propriedades f
Externí odkaz:
https://doaj.org/article/8eca8cd7171e44dea286d75eaac027c4
Autor:
Getulio Coutinho Figueiredo, Alvaro Pires da Silva, Cássio Antonio Tormena, Neyde Fabíola Balarezo Giarola, Sergio Oliveira Moraes, Brivaldo Gomes de Almeida
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 35, Iss 2, Pp 373-387 (2011)
Soil penetration resistance (PR) and the tensile strength of aggregates (TS) are commonly used to characterize the physical and structural conditions of agricultural soils. This study aimed to assess the functionality of a dynamometry apparatus by li
Externí odkaz:
https://doaj.org/article/e9ce9343e8ce432897ba00d0d29c7530
Autor:
Brivaldo Gomes de Almeida
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
Alguns dos mais freqüentes parâmetros utilizados como indicadores de qualidade do solo são: resistência tênsil de agregados (RT); densidade do solo (Ds); textura e curva de retenção de água do solo (CRAS). O objetivo deste estudo foi avaliar