نتایج جستجو برای: dust abatement

تعداد نتایج: 45130  

Applying weak disposability assumption of outputs is a common way in Data Envelopment Analysis in dealing with undesirable outputs. Two different approaches are proposed in the literature for modeling weak disposability axiom. In this paper, the technologies created with uniform and distinct abatement factors for decision making units are investigated in network DEA framework. The related DEA m...

Journal: :Occupational and environmental medicine 2005
R Colvile

T he London Underground was for decades the envy of every capital city in the world. Forty year old trains were powered by electricity from a polluting oil fired power station. Tobacco smoking was permitted at stations and in some carriages. Levels and composition of dust on The Tube had been measured, and found to contain a variety of toxic substances including quartz from brake blocks, but co...

Journal: :Environmental Health Perspectives 1998
S R Hilts S E Bock T L Oke C L Yates R A Copes

Trail, Canada, has been the site of an active lead/zinc smelter for nearly a century. Since 1991, the Trail Community Lead Task Force has carried out blood lead screening, case management, education programs targeted at early childhood groups and the general community, community dust abatement, exposure pathways studies, and remedial trials. From 1989 through 1996, average blood lead levels of ...

Journal: :Annals of agricultural and environmental medicine : AAEM 2014
Annamaria Costa Claudio Colosio Claudia Gusmara Vittorio Sala Marcella Guarino

INTRODUCTION AND OBJECTIVE In the last decades, large-scale swine production has led to intensive rearing systems in which air quality can be easily degraded by aerial contaminants that can pose a health risk to the pigs and farm workers. This study evaluated the effects of fogging disinfectant procedure on productive performance, ammonia and dust concentration, aerobic bacteria and fungal spor...

2012
Waseem Afzal Robert B. Jacko

The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Indiana Department of transportation. This report does not constitute a standard, specification or regulation. A section of road was constructed in Northeastern Indiana in the s...

2002
Mark Brady

The purpose of this article was to study the economics of Sweden's scheme of 'multiple' arable nitrogen abatement instruments. A large-scale, spatially distributed mathematical programming model that linked changes in agricultural production practices to coastal nitrogen load was developed. Actual abatement policy induced 21% abatement. A rst-best solution to 21% abatement required increased co...

Journal: :محیط شناسی 0
سمیه امیرتیموری دکتری اقتصاد منابع طبیعی، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس صادق خلیلیان دانشیار گروه اقتصاد کشاورزی، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس حمید امیرنژاد دانشیار گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری علی محبی دانشیار گروه مهندسی شیمی، دانشکدۀ فنی، دانشگاه شهید باهنر کرمان

introduction sarcheshmeh copper mine is regarded as the second largest copper deposit in the world. this is one of the largest industrial-mining complexes in the world and the largest producer of copper in iran. this complex plays an important role in iran’s economy. in 2012, this complex created employment for about 8000 people in iran and produced 203065 tons of copper cathodes. however, high...

2017
Bowen Xiao Dongxiao Niu Han Wu Haichao Wang Hui Long Guan

Industrial sectors account for around 70% of the total energy-related CO2 emissions in China. It is of great importance to measure the potential for CO2 emissions reduction and calculate the carbon price in industrial sectors covered in the Emissions Trading Scheme and carbon tax. This paper employs the directional distance function to calculate the marginal abatement costs of CO2 emissions dur...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید