Results 41 to 50 of about 730,071 (174)

Gestão ambiental empresarial: aspectos legais, mercadológicos e econômicos [PDF]

open access: yes, 2005
TCC (graduação) - Universidade Federal de Santa Catarina. Centro Sócio-Econômico. Economia.A repercussão dos problemas ambientais a partir da década de 60 culminou com a formulação do paradigma do Desenvolvimento Sustentável.
Hermanns, Ângela Käthe
core  

Highly hazardous pesticides in Nayarit, Mexico: a retrospective review

open access: yesFrontiers in Environmental Health
According to the Food and Agriculture Organization of the United Nations (FAO), Mexico uses more than a quarter of Central America's agricultural pesticides.
Fidel Navarro-García   +11 more
doaj   +1 more source

Assessing how restoration can facilitate 30×30 goals for climate‐resilient coastal ecosystems in the United States

open access: yesConservation Biology, Volume 39, Issue 3, June 2025.
Abstract Ecosystems globally have reached critical tipping points because of climate change, urbanization, unsustainable resource consumption, and pollution. In response, international agreements have set targets for conserving 30% of global ecosystems and restoring 30% of degraded lands and waters by 2030 (30×30).
Rachel K. Gittman   +7 more
wiley   +1 more source

Metodología para la localización de estaciones de monitoreo de material particulado a escala local (0.5 a 4.0 Km) en la ciudad de Santa Marta

open access: yesGestión y Ambiente, 2006
Con el objetivo de determinar los puntos más representativos donde se pueda medir en forma confiable la variación de la concentración de partículas suspendidas totales (PST) en la ciudad de Santa Marta, se adelantó un estudio que involucró mediciones de ...
Francisco Fernando García R.   +2 more
doaj  

Evaluación de la toxicidad en aguas residuales industriales tratadas por procesos biológicos utilizando bacterias luminiscentes.

open access: yesActualidades Biológicas, 2016
La toxicidad de las aguas residuales provenientes de empresas de procesamiento de productos cárnicos fue evaluada antes y después del tratamiento usando un reactor secuencial por lotes (SBR). Las pruebas de toxicidad fueron evaluadas mediante el análisis
Diana C. Rodríguez-Loaiza   +2 more
doaj   +1 more source

Stable isotope tempestology of tropical cyclones across the North Atlantic and Eastern Pacific Ocean basins

open access: yesAnnals of the New York Academy of Sciences, Volume 1543, Issue 1, Page 145-165, January 2025.
Tropical cyclones (TCs) are one of the major natural hazards to island and coastal communities and ecosystems. However, isotopic compositions of TC‐derived precipitation (P) in surface water (SW) and groundwater (GW) reservoirs are still lacking. We tested the three main assumptions of the isotope storm “spike” hypothesis (sudden spikes in isotopic ...
Ricardo Sánchez‐Murillo   +38 more
wiley   +1 more source

Contaminación visual en el Distrito Metropolitano de Quito en el periodo 2006 al 2013

open access: yes, 2020
La contaminación visual es parte de la contaminación ambiental que no ha sido ampliamente identificada lo que no ha permitido establecer soluciones efectivas en la mayoría de ciudades entre las cuales se encuentra el Distrito Metropolitano de Quito. Esta
Calderón Cháves, Edith Isabel
core   +1 more source

A paradox of public engagement: The discursive politics of environmental justice in Canada's Chemical Valley

open access: yesPolitics &Policy, Volume 52, Issue 6, Page 1246-1265, December 2024.
Abstract For over a decade, members of the Aamjiwnaang Nation have continued to fight for the recognition and redress of their unique environmental health concerns in a region known as Canada's Chemical Valley. From a critical policy studies lens, this article addresses the discursive policy challenges faced by those who are most affected by the toxic ...
Sarah Marie Wiebe
wiley   +1 more source

Particulate Carbon, a Significant Contributor to The Visibility Reduction of Mexico City

open access: yesGeofísica Internacional, 1988
Se determinaron las concentraciones de carbono elemental total (Ct) en partículas suspendidas (PST), incluyendo las fracciones de carbono orgánico volátil (C0 v) y carbón libre (Cb) "carbón negro" en 92 filtros muestreados durante 1982, utilizando un ...
H. Bravo A.   +5 more
doaj   +1 more source

High‐Frequency Isotope Compositions Reveal Different Cloud‐Top and Vertical Stratiform Rainfall Structures in the Inland Tropics of Brazil

open access: yesGeophysical Research Letters, Volume 51, Issue 15, 16 August 2024.
Abstract Understanding the key drivers controlling rainfall stable isotope variations in inland tropical regions remains a global challenge. We present novel high‐frequency isotope data (5–30 min intervals) to disentangle the evolution of six stratiform rainfall events (N = 112) during the passage of convective systems in inland Brazil (September 2019 ...
V. Santos   +3 more
wiley   +1 more source

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