Results 51 to 60 of about 12,379 (270)

Characterisation of Drought and Wet Events in the Paraíba do Sul River Basin—Brazil

International Journal of Climatology, EarlyView.
Trend analysis identified statistically significant reductions in precipitation (at the 5% significance level) at specific pluviometric stations in São Paulo and Rio de Janeiro, while other areas, mainly in Minas Gerais, experienced significant increases in annual and seasonal rainfall, particularly during summer and spring. These significant trends at
Gildo Rafael de Almeida Santana, Eliane Barbosa Santos, Maria Gertrudes Alvarez Justi da Silva, Vicente de Paulo Santos de Oliveira, Jader Lugon Junior   +4 more
wiley   +1 more source

Carbón activado derivado de cáscara de zapallo (Cucurbita sp.) para la remoción de cloro total y residual de agua potable

Manglar, 2018
La presente investigación tuvo como objetivo producir carbón activado mediante activación química de un material no convencional, residuos de cáscara de zapallo “hueso” (Cucurbita sp.), con la finalidad de remover el cloro total y residual del agua ...
José Silva, John Rimaycuna, Eber Herrera, Dorian Aguirre, Miguel Puescas, Riitta Keiski, Gerardo Cruz   +6 more
doaj   +1 more source

Precision Restoration to Minimize Soil Loss in a Watershed in the Atlantic Forest Domain

Land Degradation &Development, EarlyView.
ABSTRACT The Turvo River Watershed, located in the Zona da Mata region of Minas Gerais and part of the Doce River Basin, faces serious problems of erosion and soil degradation, which compromise and reduce the quality of local water resources. Given this scenario, it is essential to implement environmental recovery strategies that prioritize the ...
Rodrigo Nobre Santana, Luíza Maria Affonso Lopes da Silva, Sady Júnior Martins da Costa Menezes, Getúlio Fonseca Domingues, Carlos Antônio Alvares Soares Ribeiro, Plinio Antonio Guerra Filho, Alexandre Rosa dos Santos   +6 more
wiley   +1 more source

Vitex oreadica and V. umbellata (Lamiaceae): two new species from Cerrado and Atlantic forest of Brazil

Nordic Journal of Botany, EarlyView.
Vitex L. is a pantropical genus of Lamiaceae comprising 209 taxa. Brazil harbors 35 species, representing nearly 50% of the genus richness in the Neotropics, with the Amazon showing the highest richness, followed by the Atlantic Forest and Cerrado domains. Nevertheless, most taxonomic studies of the genus have been conducted in Africa and Asia.
Thaís Teixeira Conegiro, Guilherme Medeiros Antar, Carla Poleselli Bruniera   +2 more
wiley   +1 more source

Remoción de parámetros fisicoquímicos y microbiológicos de plantas de tratamiento de aguas residuales del Gran Área Metropolitana, Costa Rica

Tecnología en Marcha, 2023
Las aguas residuales inadecuadamente tratadas son un factor de riesgo para la salud pública dado que son un vehículo de diseminación de microorganismos patógenos como virus entéricos.
Luz María Chacón-Jiménez, Eric Morales-Mora, Ernesto Alfaro-Arrieta, Carmen Valiente-Alvarez, Liliana Reyes-Lizano, Kenia Barrantes-Jiménez   +5 more
doaj   +1 more source

Calibración de cloro residual en sistemas de distribución de agua potable

, 2004
El agua pura es un compuesto químico en el que se agrupan dos átomos de hidrógeno y uno de oxígeno. Esta molécula en la naturaleza sufre algunas alteraciones ya que al entrar en contacto con el suelo y con la atmósfera interactúa con elementos y compuestos que cambian su composición original, tanto desde el punto de vista físico como desde el punto de ...
Hernández Almanza, Henry José
openaire   +2 more sources

Reestablishment and a new name for Actinostemon grandifolius (Müll.Arg.) Pax

Nordic Journal of Botany, EarlyView.
The genus Actinostemon has undergone several changes in its circumscription due to persistent difficulties in its taxonomic placement. The taxonomic history of the genus is controversial and marked by nomenclatural issues, particularly involving its type species, Actinostemon grandifolius Klotzsch, including incorrect synonymizations and the ...
Amanda O. Souza, Josimar Külkamp, Otávio Luis M. da Silva, Inês Cordeiro, Daniela S. Carneiro‐Torres   +4 more
wiley   +1 more source

Compendio nacional de estadísticas de recursos hídricos 2022

, 2023
La Autoridad Nacional del Agua a través del Sistema Nacional de Información de Recursos Hídricos (SNIRH), presenta información sobre temáticas fundamentales para la gestión de recursos hídricos como: i) Oferta de agua superficial, ii) Volúmenes de ...
Autoridad Nacional del Agua. Dirección del Sistema Nacional de Información de Recursos Hídricos
core  

ANÁLISE DA ÁGUA RESIDUAL NO PROCESSO DE FRATURAMENTO HIDRÁULICO NA FORMAÇÃO MARCELLUS, WEST VIRGINIA, EUA

Revista Águas Subterrâneas, 2017
A Água Residual produzida no processo de Fraturamento Hidráulico foi o tipo de material mais comum relatado nos incidentes de derramamentos incluídos no relatório da Agência de Proteção Ambiental dos Estados Unidos (EPA).
Stephane Andry Reis Cerrato
doaj  

Population recovery of an endangered macaw enhances long‐distance seed dispersal via stomatochory

Oikos, EarlyView.
Seed dispersal by large, mobile vertebrates plays a key role in shaping plant spatial dynamics and community structure. However, how variation in animal population size influences the magnitude and spatial scale of seed dispersal remains poorly understood.
Giulyana A. Benedicto, Erica C. Pacífico, Mathias M. Pires   +2 more
wiley   +1 more source