Results 71 to 80 of about 248,386 (209)

Identificación y modelización de tendencias en emisiones contaminantes [PDF]

open access: yes, 2010
El objetivo de este trabajo es el análisis de tendencias para emisiones contaminantes en España y número de horas o días en que los que se superan los umbrales de concentración permitidos por la ley (Directiva 1999/30/CE y Real Decreto 1073/2002 ) en ...
Garcia Garcia, Beatriz   +2 more
core   +1 more source

Determination of biosorption mechanism in biomass of agave, using spectroscopic and microscopic techniques for the purification of contaminated water [PDF]

open access: yes, 2019
[Abstract] Lead (Pb2+) and copper (Cu2+) are polluting metals due to their toxicity; however, the extraction of these metals is essential for economic development, so it is important to look for efficient and low-cost alternatives that can remove heavy ...
Barriada, José Luis   +6 more
core   +1 more source

Plaguicidas y otros contaminantes

open access: yes, 2017
Ponencia presentada como investigación base para el INFORME ESTADO DE LA NACIÓN EN DESARROLLO HUMANO SOSTENIBLE 2011 (no.
Castillo, Luisa Eugenia   +5 more
openaire   +3 more sources

Enemigos invisibles

open access: yesEntretextos, 2013
En la atmósfera de las ciudades existe una gran cantidad de material particulado conformado por residuos de combustión, polvo derivado de la actividad industrial, desgaste de llantas y balatas, metales pesados, fibras, hollín y también por material ...
Judith Castellanos-Moguel   +3 more
doaj   +1 more source

Failure of isoxsuprine HCl to increase sheep fertility after cervical versus laparoscopic AI using chilled semen at different durations

open access: yesAnimal Science Journal, Volume 95, Issue 1, January/December 2024.
Abstract To improve the fertility of cervical artificial insemination (AI) in sheep, we investigated isoxsuprine HCl usage on the cervical passage during cervical AI. We also compared cervical and laparoscopic AI fertility results of using chilled semen at different durations.
Bülent Bülbül   +5 more
wiley   +1 more source

Prospecção de metodologia para extração protéica em gramíneas forrageiras compatível com análise proteômica. [PDF]

open access: yes, 2011
O objetivo deste estudo é avaliar metodologias de extração de proteínas de Brachiaria, visando indicar aquela que proporciona a obtenção de extratos protéicos mais concentrados e livres de ...
COSTA, P. P. O. L. da   +3 more
core  

Impact of Treated Swine Wastewater on Elemental Distribution in the Growth of Habanero Pepper Seedlings

open access: yesAgronomy
The growing global demand for food has driven an increase in both swine and agricultural production, although swine wastewater poses a significant environmental risk.
Carlos David Hernández-Pinto   +7 more
doaj   +1 more source

Alimentos PT.ON.DATA - Contaminantes químicos na cadeia alimentar em Portugal em amostras do controlo oficial [PDF]

open access: yes, 2014
A recolha de dados analíticos de géneros alimentícios e alimentos para animais é uma importante tarefa da Autoridade Europeia para a Segurança dos Alimentos (EFSA) e uma componente essencial na avaliação do risco associado à alimentação.
Brazão, Roberto   +7 more
core  

Estadsticas del Asma en Los Latinos [PDF]

open access: yes, 2009
Chicago is known for many things, our great food and architecture. Unfortunately, we are also known for being an epi-center for asthma. We lead the Nation in asthma deaths, emergency room visits and hospitalizations.

core  

Evaluación de la calidad físico-química y bacteriológica del agua subterránea en pozos criollos del municipio de Moa

open access: yesMinería y Geología, 2007
Los pobladores de los repartos Las Coloradas y La Playa (municipio de Moa) utilizan para el consumo humano agua subterránea procedente de pozos criollos cuando falla la distribución de agua potable a través de la red hidrológica.
Osvaldo Fernández-Urgellés   +1 more
doaj  

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