نتایج جستجو برای: c pollution
تعداد نتایج: 1122536 فیلتر نتایج به سال:
Background: The impact of urban air pollution and temperature changes over health is a growing concern for epidemiologists all over the world and particularly for developing countries where fewer studies have been performed. Aim: The main goal of this paper is to analyze the short term effects of changes in temperature and atmospheric carbon monoxide on daily mortality in Buenos Aires, Argentin...
Pollution: Associations Persist with Continued Advances in Research Methodology (See Neas et al., p. 629; Lee and Schwartz; p. 633; and Fairley, p. 637) In this issue of Environmental Health Perspectives there are papers by Fairley, Neas et al., and Lee and Schwartz. Although these papers present different approaches, they provide a reasonable representation of stateof-the-art epidemiologic res...
Growth and biochemical performance of Manihot esculenta Crantz (TMS 0505) amended with Centrosema pubescens and NPK fertilizer were carried out. Contamination levels of 2%, 4%, and 6% were used while amelioration treatments C. pubescens and NPK 15:15:15 were carried out by adding organic supplement (decomposed Centrosema pubescens) and NPK at the rate of 0.25Kg per 5Kg of soil to the various le...
Due to the large number of chemical species and the three space dimensions, o -the-shelf sti ODE integrators are not feasible for the numerical time integration of sti systems of advection-diffusion-reaction equations @c @t +r (uc) = r (Kr c) +R (c) ; c = c(x; t); c 2 IRm; x 2 IR3 from the eld of air pollution modelling. This has led to the use of special time integration techniques. This paper...
We examined the degradation of biphenyl and the commercial polychlorinated biphenyl (PCB) mixture Aroclor 1221 by indigenous Arctic soil microorganisms to assess both the response of the soil microflora to PCB pollution and the potential of the microflora for bioremediation. In soil slurries, Arctic soil microflora and temperate-soil microflora had similar potentials to mineralize [14C]biphenyl...
Ultimately, hundreds of billions of dollars of public and private funds will be spent in the US in hazardous chemical site (Superfund and closed RCRA facilities) investigation and remediation. A critical review of the adequacy of remediation of many of these sites that are “closed” in accord with RCRA and/or CERCLA requirements as being interpreted by regulatory agency staff/boards and principl...
Receptor-oriented source apportionment models are often used to identify sources of ambient air pollutants and to estimate source contributions to air pollutant concentrations. In this study, a PCA/APCS model was applied to the data on non-methane hydrocarbons (NMHCs) measured from January to December 2001 at two sampling sites: Tsuen Wan (TW) and Central & Western (CW) Toxic Air Pollutants Mon...
Limited information exists regarding the complex interactions between biological invasions, pollution, and climate change. Most studies indicate that pollution tends to favor invasive species. Here, we provide evidence that arsenic (As) pollution may have a role in limiting the invasion of the exotic brine shrimp Artemia franciscana. We tested As toxicity in natural populations of Artemia parth...
Mexico City Metropolitan Area children chronically exposed to high concentrations of air pollutants exhibit an early brain imbalance in genes involved in oxidative stress, inflammation, innate and adaptive immune responses along with accumulation of misfolded proteins observed in the early stages of Alzheimer and Parkinson's diseases. A complex modulation of serum cytokines and chemokines influ...
objective: the world is currently facing with various problems including water and soil pollution as well as a major threat to the health of the citizens due to the advancement at human civilization, technology development, pesticides and chemical fertilizers application, the increasing exploitation of natural resources by the agricultural sector and the increasing usage of fossil energy. there...
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