Results 51 to 60 of about 248,386 (209)

Evaluación de mezclas de biodiésel de Jatropha curcas (L.) en bancos de motores diésel

open access: yesPastos y Forrajes, 2018
El objetivo de este estudio fue evaluar diferentes mezclas del biodiésel extraído de Jatropha curcas (L.) en bancos de motores diésel, para su posterior uso en el transporte agrícola en Cuba. Para ello, se prepararon mezclas del combustible diésel con 5,
Indira Tobío-Pérez   +4 more
doaj  

Hormônios sexuais estrógenos: contaminantes bioativos [PDF]

open access: yesQuímica Nova, 2006
Natural and synthetic estrogens have been detected in rivers, lakes and estuaries in several parts of the world. The primary sources of these compounds are the industrial and household effluents, which are not eliminated by the received treatment.
Reis Filho, Ricardo Wagner   +2 more
openaire   +3 more sources

Multiple‐stressor effects on leaf litter decomposition in freshwater ecosystems: A meta‐analysis

open access: yesFunctional Ecology, Volume 38, Issue 7, Page 1523-1536, July 2024.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Recent years have witnessed a surge in research on the effects of multiple stressors in freshwater ecosystems. While studies have increased, the synthesis of their findings into a broader understanding of ecosystem‐level effects remains an ongoing endeavour. Leaf litter
Graciela Medina Madariaga   +6 more
wiley   +1 more source

Estudio y aplicación del biodiesel [PDF]

open access: yes, 2008
El biodisel como alternativa para reducir las emisiones contaminantes en la ciudad de ...
Chica, Fernando, Espinoza, Fernando
core  

The role of sediments in the carbon and pollutant cycles in aquatic ecosystems

open access: yesActa Limnologica Brasiliensia
Aim Anthropogenic modifications in the landscape are accelerating biogeochemical cycles and causing unbalances in terrestrial and aquatic ecosystems with still unknow impacts on biotic and abiotic processes.
Simone Jaqueline Cardoso   +3 more
doaj   +1 more source

Plant‐based meat analogues marketed in Catalonia: analysis of contaminants, essential elements, microbiological and physicochemical status, dietary intake estimation and health risk assessment

open access: yesFood Risk Assess Europe, Volume 2, Issue 3, July 2024.
Abstract The latest barometer of food safety in Catalonia conducted by the Catalan Food Safety Agency (ACSA for its initials in Catalan) in 2021 shows that 28.7% of the population consumes meat analogues (substitutes). The main reasons for consuming this type of food are animal welfare, followed by environmental and health reasons.
Martí Nadal Lomas   +5 more
wiley   +1 more source

Proceso y dispositivo de ozonización para el tratamiento de aguas contaminadas con pesticidas y otros contaminantes orgánicos de origen agrícola [PDF]

open access: yes, 2016
Número de publicación: ES2178561 A1 (16.12.2002) También publicado como: ES2178561 B1 (01.12.2003) Número de Solicitud: Consulta de Expedientes OEPM (C.E.O.)P200002112 (22.08.2000)Proceso y dispositivo de ozonización para el tratamiento de aguas ...
Agüera López, Ana María   +6 more
core  

Quantifying water effluent violations and enforcement impacts using causal AI

open access: yesPolicy &Internet, Volume 16, Issue 2, Page 317-338, June 2024.
Abstract In the landscape of environmental governance, controlling water pollution through the regulation of point sources is vital as it preserves ecosystems, protects human health, ensures legal compliance, and fulfills global environmental responsibilities.
Yingjie Wang   +3 more
wiley   +1 more source

Out-of-Plane Design Equations for Confined Masonry Walls

open access: yesBuildings
Nowadays there is still a lack of requirements for the out-of-plane design of confined masonry walls. Current code requirements are mainly based on the in-plane behavior of those walls. This research is divided into two parts.
Luis Fernandez-Baqueiro   +2 more
doaj   +1 more source

Histologic, metabolomic, and transcriptomic differences in fir trees from a peri‐urban forest under chronic ozone exposure

open access: yesEcology and Evolution, Volume 14, Issue 5, May 2024.
Urbanization alters ecosystems and evolutionary processes. Processes like air pollution by tropospheric ozone contribute to the decline of urban and peri‐urban ecosystems, such as Abies religiosa forests in the peripheral mountains southwest of Mexico City.
Verónica Reyes‐Galindo   +10 more
wiley   +1 more source

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