Results 11 to 20 of about 103,766 (207)

Comportamiento del monóxido de carbono y el clima en la ciudad de Toluca, de 1995 a 2001 [PDF]

Ciencia Ergo Sum, 2004
Uno de los gases contaminantes con mayor distribución y concentración en Toluca y su área metropolitana es el monóxido de carbono que, al igual que el dióxido de azufre y el dióxido de carbono, es generado principalmente por la combustión automotriz
Julio César Hernández Romero, Delfino Madrigal Uribe, Carlos Morales Méndez   +2 more
doaj   +1 more source

Estimación de la emisión de gases de efecto invernadero en el municipio de Montería (Córdoba, Colombia) [PDF]

Revista Ingenierías Universidad de Medellín, 2006
En este trabajo se presenta la primera versión del inventario de emisiones de gases de efecto invernadero para el año de 2005 en el municipio de Montería (Córdoba, Colombia). Este inventario incluye las emisiones provenientes de los vehículos automotores,
Carlos Alberto Echeverri Londoño
doaj   +3 more sources

Emisiones de gases contaminantes en vehículos livianos a gasolina

Revista Científica INGENIAR: Ingeniería, Tecnología e Investigación, 2021
El estudio tuvo como objetivo central la determinación de emisiones de gases contaminantes en vehículos livianos a gasolina del parque automotor de la universidad técnica de Manabí, Portoviejo, Ecuador. Como metodología se aplicó en enfoque cuantitativo de la investigación, mediante un diseño cuasi experimental, empleando la técnica de la observación ...
Jorge Milton Velepucha-Sánchez, Luis Felipe Sabando-Piguabe   +1 more
openaire   +2 more sources

Report of the Scientific Committee of the Spanish Agency for Food Safety and Nutrition (AESAN) on the available evidence in relation to the potential obesogenic activity of certain chemical compounds that may be present in foods

Food Risk Assess Europe, Volume 1, Issue 2, September‐December 2023., 2023
Abstract According to the World Health Organization (WHO), obesity and overweight have reached epidemic proportions globally. In Spain, the prevalence of obesity is high, especially in childhood, with an upward trend in the last two decades. While improving dietary habits and increasing physical activity has been the main focus on reducing obesity, its
Ana María Rivas Velasco, Irene Bretón Lesmes, Araceli Díaz Perales, Ángel Gil Izquierdo, María José González Muñoz, Victoria Moreno Arribas, María del Puy Portillo Baquedano, Silvia Pichardo Sánchez   +7 more
wiley   +1 more source

Development of a Simple Integrative Carbon Nanomaterial Microextraction Method with GC‐MS for Assessing Pesticide Residues in Apples

Journal of Chemistry, Volume 2023, Issue 1, 2023., 2023
The present study describes an efficient analytical method for analyzing apple pesticide residues. This novel approach employs ultrasound‐assisted cleaning (UAC), solid‐phase microextraction (SPME), and gas chromatography/mass spectrometry (GC‐MS). A fiber coating with carbon nanomaterials (CNMs) was used for the extraction process.
Eduard F. Valenzuela, Leiliane C. André, Helvecio C. Menezes, Zenilda L. Cardeal, Eulogio J. Llorent Mart Nez   +4 more
wiley   +1 more source

Trends and knowledge gaps in field research investigating effects of anthropogenic noise

Conservation Biology, Volume 35, Issue 1, Page 115-129, February 2021., 2021
Abstract Anthropogenic noise is a globally widespread sensory pollutant, recognized as having potentially adverse effects on function, demography, and physiology in wild animals. Human population growth and associated changes in urbanization, transportation, and resource extraction all contribute to anthropogenic noise and are predicted to increase in ...
Paul Jerem, Fiona Mathews
wiley   +1 more source

Taxing Flaring and the Politics of State Methane Release Policy

Review of Policy Research, Volume 37, Issue 1, Page 6-38, January 2020., 2020
Abstract Methane is a potent greenhouse gas but it has received strikingly less social science attention than carbon dioxide in examining climate policy options. This article explores American state policy toward methane that is not captured and instead released into the atmosphere during oil and gas production.
Barry Rabe, Claire Kaliban, Isabel Englehart   +2 more
wiley   +1 more source

Análisis de la efectividad de los aditivos en el combustible [PDF]

, 2020
Este documento presenta la investigación orientada al tema de reducir emisiones contaminantes mediante el uso de aditivos y su efectividad, para comprobar su calidad y garantía respecto a los parámetros indicados por el fabricante, se efectuaron varios ...
Arias Faicán, José David, Moscoso Sarmiento, Christian Adrián, Neira Alvarado, Daniel Felipe, Quezada Cordero, Adrián Steven, Quito León, Bryan Fabricio   +4 more
core  

Physical and Chemical Properties of Biodiesel Obtained from Amazon Sailfin Catfish (Pterygoplichthys pardalis) Biomass Oil

Journal of Chemistry, Volume 2019, Issue 1, 2019., 2019
Amazon sailfin catfish (Pterygoplichthys pardalis) is considered one of the greatest threats to the biodiversity of continental aquatic systems, causing serious economic and environmental problems in the regions. In this work, the production of biodiesel from Amazon sailfin catfish biomass oil is studied. The physical and chemical properties of biofuel
F. Anguebes-Franseschi, A. Bassam, M. Abatal, O. May Tzuc, C. Aguilar-Ucán, A. T. Wakida-Kusunoki, S. E. Diaz-Mendez, L. C. San Pedro, Paula G. De Pinho   +8 more
wiley   +1 more source

Carbon Nanomaterials for Breast Cancer Treatment

Journal of Nanomaterials, Volume 2018, Issue 1, 2018., 2018
Currently, breast cancer is considered as a health problem worldwide. Furthermore, current treatments neither are capable of stopping its propagation and/or recurrence nor are specific for cancer cells. Therefore, side effects on healthy tissues and cells are common. An increase in the efficiency of treatments, along with a reduction in their toxicity,
M. L. Casais-Molina, C. Cab, G. Canto, J. Medina, A. Tapia, Federica Paladini   +5 more
wiley   +1 more source