نتایج جستجو برای: natural depletion

تعداد نتایج: 540977  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1394

learning english is very popular all over the world nowadays and it is considered a high prestigious language among citizens of different societies. one of the most important materials for learning a new language are textbooks. the debate that whether learning a new language is natural and neutral or ideological and influential on people’s worldviews, has always been of great importance.

M.K Motamed S.N Mousavi Z Mozaffari

A key aspect of sustainable development in a country is how energy, environment and economic sectors interact. Greenhouse gas emissions and their impacts are among important environmental issues that have been in focus. The increase in the concentration of these gases in atmosphere to levels above the natural level results in global warming, depletion of the Earth’s protective layer against har...

2000
Richard W. England

During the past half century, theorizing about economic growth has forced economists to reconsider and revise the capital concept a number of times. This paper explores the analytical relationship between capital accumulation and economic growth, on the one hand, and the natural world, on the other. Section 1 sketches modern growth theory with an emphasis on whether or not the economy is seen a...

Journal: :مهندسی بیوسیستم ایران 0
مهدی خجسته پور دانشیار گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد علیرضا طاهری راد دانشجوی کارشناسی ارشد مکانیزاسیون، گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد امین نیکخواه دانشجوی کارشناسی ارشد مکانیزاسیون، گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد

the main objective of this study was to investigate the environmental impacts of cotton production in golestan province of iran using life cycle assessment methodology. the data used in the study were obtained from cotton farmers with face-to-face questionnaire method during 2011-2012. the questionnaires included total inputs of cotton production in the region and yield weight. environmental im...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

This article (and all articles in the proceedings volume relating to same conference) has been retracted by IOP Publishing following an extensive investigation line with COPE guidelines. uncovered evidence of systematic manipulation publication process and considerable citation manipulation. respectfully requests that readers consider work within this potentially unreliable, as not through a cr...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2003
S R Wilson K R Solomon X Tang

It is well-understood that reductions in air quality play a significant role in both environmental and human health. Interactions between ozone depletion and global climate change will significantly alter atmospheric chemistry which, in turn, will cause changes in concentrations of natural and human-made gases and aerosols. Models predict that tropospheric ozone near the surface will increase g...

2008
Susana Ferreira Kirk Hamilton Jeffrey R. Vincent

Economic theory predicts that the current change in national wealth, broadly defined to include natural and human capital as well as produced capital (“genuine savings”), determines whether the present value of future changes in consumption is positive or negative. Theoretical research has focused on the effects of population growth on this relation, but no rigorous empirical investigation has ...

Journal: :international journal of environmental research 2009
d. nasr m.a. massoud r. khoury v. kabakian

significant damages incurred across lebanon during the july 2006 war encompassing the destruction of road networks, bridges and overpasses as well as a vast number of dwelling units. it is anticipated that reconstruction works after the war shall unavoidably create a newly founded demand for natural resources, most notably primary and secondary construction material. this paper assesses the war...

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