نتایج جستجو برای: c pollution

تعداد نتایج: 1122536  

2010
JAMES W. RIDGWAY

In the recent past, household hazardous waste has become an issue to more and more communities. In an effort to control the pollution generated within a household, various methods have been set forth in col­ lecting and disposing of these wastes. Unfortunately, all too often the hazardous waste collection days are poorly attended, and the costs become prohibitive when measured against the amoun...

1956
L. Sebastiani

Human activities have increased the number of environmental constraints for olive plants. Water, soil and air pollution are rapidly becoming important environmental concerns for plant growth and productivity. In addition to pollution problems, modifications in gaseous composition of the atmosphere, as well as terrestrial solar radiation changes associated with pollution, are the new factors stu...

1998
Marc Germain Philippe Toint Henry Tulkens Aart de Zeeuw

International environmental agreements aiming at correcting negative externalities generated by transboundary pollution are difficult to achieve for many reasons. Important obstacles arise from asymmetry in costs and benefits, and instability may occur due to the fact that coalitions of countries may attempt to do better for themselves outside of any proposed agreement. In a static context it h...

ژورنال: علوم آب و خاک 2003
سیروس جعفری, , مصطفی چُرُم, ,

Environmental pollution is one of the major problems for humans and animals. Radioactive wastes and heavy metals are important sources of pollution. Recent studies suggest that soil and geomedia have a high potential for the disposal of radioactive wastes and heavy metals. The clay minerals in geomedia can act as a barrier against radioactive wastes and heavy metals. However, enough information...

Journal: :Epidemiology 2011
Pei-Chen Lee Evelyn O Talbott James M Roberts Janet M Catov Ravi K Sharma Beate Ritz

BACKGROUND It is not well understood how air pollution leads to adverse pregnancy outcomes. One pathway may be through C-reactive protein, a biomarker of systemic inflammation that has been reported to increase the risk of preterm delivery. We examined whether air pollution influences serum concentrations of C-reactive protein in early pregnancy. METHODS We studied 1696 pregnant women in Alle...

Journal: :Sci. Comput. Program. 2001
Arie van Deursen Leon Moonen

In a typical COBOL program, the data division consists of 50% of the lines of code. Automatic type inference can help to understand the large collections of variable declarations contained therein, showing how variables are related based on their actual usage. The most problematic aspect of type inference is pollution, the phenomenon that types become too large, and contain variables that intui...

Journal: :Environmental Health Perspectives 2001
K Donaldson V Stone A Seaton W MacNee

Well-documented air pollution episodes throughout recent history have led to deaths among individuals with cardiovascular and respiratory disease. Although the components of air pollution that cause the adverse health effects in these individuals are unknown, a small proportion by mass but a large proportion by number of the ambient air particles are ultrafine, i.e., less than 100 nm in diamete...

Journal: :Journal of the Air Pollution Control Association 1971
H M Cota

This paper was prepared to provide an overview of current air pollution training in the United States for the S-l1 Education and Training Committee, APCA. An earlier report by Sholtes! reviewed the wide range of training going on in 1966. The number of programs has significantly increased; therefore, the present study has been focused on training efforts at colleges and universities leading to ...

2015
Szabolcs Péter Fernando Holguin Lisa G. Wood Jane E. Clougherty Daniel Raederstorff Magda Antal Peter Weber Manfred Eggersdorfer

Air pollution worldwide has been associated with cardiovascular and respiratory morbidity and mortality, particularly in urban settings with elevated concentrations of primary pollutants. Air pollution is a very complex mixture of primary and secondary gases and particles, and its potential to cause harm can depend on multiple factors-including physical and chemical characteristics of pollutant...

2011
Andrew P. Negri Mia O. Hoogenboom

Coral reefs are highly susceptible to climate change, with elevated sea surface temperatures (SST) posing one of the main threats to coral survival. Successful recruitment of new colonies is important for the recovery of degraded reefs following mortality events. Coral larvae require relatively uncontaminated substratum on which to metamorphose into sessile polyps, and the increasing pollution ...

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