نتایج جستجو برای: pollutant sources
تعداد نتایج: 307281 فیلتر نتایج به سال:
BACKGROUND Evidence is needed regarding the air pollutant components and their sources responsible for associations between particle mass concentrations and human cardiovascular outcomes. We previously found associations between circulating biomarkers of inflammation and mass concentrations of quasi-ultrafine particles <or= 0.25 microm in aerodynamic diameter (PM0.25) in a panel cohort study of...
ABSTRACT A program is developed that includes two hydrodynamic models, a 2D depth-averaged (2DH) and a Quasi-3D (Q3D), and a pollutant transport model that uses a 1 order upwinding and a 3 order QUICKEST numerical schemes. Several tests were performed in two test basins in order to examine the performance of the above models. The Q3D model is successfully applied to Lake Ontario, using a 4-km-s...
Water from dug wells is one of the sources clean water used by community both in villages and cities. Groundwater consumed must have quality accordance with specified requirements. One important parameters presence Escherichia coli bacteria (E.coli). The aims this study to identify well. In addition, determine correlation between distance pollutant source (cowshed septic tank) analytical method...
This study proposes a framework for estimating pollutant flux in an estuary. An efficient method is applied to estimate the flux of pollutants in an estuary. A gauging station network in the Danshui River estuary is established to measure the data of water quality and discharge based on the efficient method. A boat mounted with an acoustic Doppler profiler (ADP) traverses the river along a pres...
BACKGROUND Toxic substances released into the environment (to both air and water) by many types of industries might be related with the occurrence of some malignant tumours and other diseases. The publication of the EPER (European Pollutant Emission Register) Spanish data allows to investigate the presence of geographical mortality patterns related to industrial pollution. The aim of this paper...
Researchers have previously reported associations between exposure to air pollution during pregnancy and decreased birth weights.1,2 However, in any given location there is usually very little variation in air pollutant concentrations over short time periods, barring events such as wildfires and other seasonally influenced sources of pollution. It has therefore been difficult to pinpoint a part...
As part of the USDOE’s Carbon Sequestration Program, we have developed an integrated modeling framework to evaluate the performance and costs of alternative CO2 capture and storage technologies for fossil-fueled power plants, in the context of multi-pollutant control requirements. This model (called the IECM-CS) allows for explicit characterization of the uncertainty or variability in any or al...
This declaration summarizes the scientific and technical conclusions presented by four expert panels in their critical synthesis manuscripts and in plenary sessions at the Eighth International Conference on Mercury as a Global Pollutant, convened in Madison, Wisconsin, USA, on 6-11 August 2006. The 1150 registered participants in this conference constituted a diverse, multinational body of scie...
This paper presents a novel Neural Network application in order to estimate Air Pollutant Levels. The application considers both Pollutant concentrations and Meteorological variables. In order to compute the Air Pollutant Level the method considers three important stages. In first stage, A process to validate data information and built a threedimensional Information Feature Vector with Pollutan...
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