نتایج جستجو برای: reduction of pollution

تعداد نتایج: 21196320  

2002
Warren S. Perkins

Since discharge limits are becoming stricter for industrial wastes, textile manufacturers are searching for 3fficient and economical methods of pollution reduction. This is typical of :he situation facing the textile ndustry, especially in the area of :olor pollution emitted into the zarth's waterways. Ozone treatment ;o remove color from wastewater :ould be a solution to the problem of

2005
Lucy Bayer-Oglesby Leticia Grize Markus Gassner Kathy Takken-Sahli Felix H. Sennhauser Urs Neu Christian Schindler Charlotte Braun-Fahrländer

The causality of observed associations between air pollution and respiratory health in children is still subject to debate. If reduced air pollution exposure resulted in improved respiratory health of children, this would argue in favor of a causal relation. We investigated whether a rather moderate decline of air pollution levels in the 1990s in Switzerland was associated with a reduction in r...

2017
Jun Zhang Xiaohui Song

Taking Handan City (the south of Northern China) as an example, and making use of the environmentally friendly materials of Handan Environmental Monitor Station in 2013-2014, the surface observational data of Handan Meteorological Station and the sounding data of Xingtai station, combined with the integrated analysis of numerical prediction and simulation, this paper shows that, in 2014, the ai...

2007
M. A. Aboulhassan S. Souabi A. Yaacoubi

Al2 (SO4)3, 18H2O, FeCl3 and Ca (OH)2 were used for the treatment of tannery wastewaters. The influences of pH and coagulant dosages were studied. Conditions were optimised according to the pollutant removal efficiencies, the volume of decanted sludge and the biodegradability index improvement. The results indicate that 6771% of total COD, 76-92% of color and 79-97% of Cr can be removed using t...

2009
Tek Narayan Maraseni Geoff Cockfield John Howard

The authors review the decision-making since the Labour Government came into office (November 2007). The Australian Government‘s ̳Carbon Pollution Reduction Scheme‘ White Paper (15 December 2008) proposes that an Australian Emissions Trading Scheme (AETS) be implemented in mid 2010. Acknowledging that the scheme is comprehensive, the paper finds that in many cases, Australia will take a softer ...

2015
Erdenekhuu Nansalmaa Micheal P. Eriksen

During the last 10 years, air pollution has become one of the major public health problems in Ulaanbaatar city of Mongolia, and concentrations of pollutants were measured 3 to 50 times higher than WHO recommendation. This devastating air pollution is produced mostly by thousands of families who migrated from countryside and live in gers (traditional dwellings) in the suburban area which is not ...

The use of renewable energies, especially in metropolises has led to a reduction in environmental pollution and greater access to clean, renewable and sustainable energy. This paper evaluates the effectiveness of a national plan adopted by the Tehran city council for reducing air pollutions. This plan is designed to increase the share of renewable energies in residential buildings. This study a...

Journal: :Experimental lung research 2003
Maria Joäo Oliveira António S Pereira Paula G Ferreira Nuno R Grande Artur P Aguas Laura Guimaräes Diamantino Freitas António P Carvalho

Scanning electron microscopy (SEM) was used to investigate whether chronic exposure to noise modifies pleural morphology. Rats were submitted to 8-h/day schedule of noise that is similar to the working hours at cotton-mill rooms. Morphometry of the area occupied by microvilli on the pleural surface showed a decrease in microvilli after 3 months of rat exposure to noise. The reduction of microvi...

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