نتایج جستجو برای: respectively normalized indicator of global warming

تعداد نتایج: 21224332  

Journal: :international journal of occupational and environment medicine 0
antonella rossati department of infectious diseases, university hospital “maggiore della carità”, novara, italy

since the mid-19 th century, human activities have increased greenhouse gases such as carbon dioxide, methane, and nitrous oxide in the earth's atmosphere that resulted in increased average temperature. the effects of rising temperature include soil degradation, loss of productivity of agricultural land, desertification, loss of biodiversity, degradation of ecosystems, reduced fresh-water resou...

Journal: :بوم شناسی کشاورزی 0
سلمان دستان افشین سلطانی قربان نورمحمدی حمید مدنی

the objectives of this study was to estimation of greenhouse gases (ghg) emissions and global warming in rice production and identify measures to reducing fossil energy use and greenhouse gases emissions. three rice production systems included sri, improved and conventional were studied. all activities, field operation and data in production methods and differents inputs rates were monitored an...

Journal: :Faraday discussions 2013
M Z Jacobson J T Wilkerson A D Naiman S K Lele

This study examines the 20-year impacts of emissions from all commercial aircraft flights worldwide on climate, cloudiness, and atmospheric composition. Aircraft emissions from each individual flight worldwide were modeled to evolve from the subgrid to grid scale with the global model described and evaluated in Part I of this study. Simulations with and without aircraft emissions were run for 2...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1392

this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...

Journal: :Acta medica Iranica 2013
Taraneh Yazdanparast Sousan Salehpour Mohammad Reza Masjedi Seyed Mohammad Seyedmehdi Eddie Boyes Martin Stanisstreet Mirsaeed Attarchi

Study of students' knowledge about global warming can help authorities to have better imagination of this critical environmental problem. This research examines high school students' ideas about greenhouse effect and the results may be useful for the respective authorities to improve cultural and educational aspects of next generation. In this cross-sectional study, a 42 question questionnaire ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی 1392

in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
Elsa E Cleland Nona R Chiariello Scott R Loarie Harold A Mooney Christopher B Field

Shifting plant phenology (i.e., timing of flowering and other developmental events) in recent decades establishes that species and ecosystems are already responding to global environmental change. Earlier flowering and an extended period of active plant growth across much of the northern hemisphere have been interpreted as responses to warming. However, several kinds of environmental change hav...

Kourosh Mojavery Samak Reza Kakvan Shaghayegh DelfanAzari

For a few decades has proposed sustainable developing in different sciences and professions including architecture and urbanization and its origins  is in environmental crises  and also excessive use of fossilized energies in the world. problems such as global warming, increasingly developing of green house gases in atmosphere that its origin  is  in global warming , air and soil  pollution, an...

Today, climate change and global warming caused by the emission of greenhouse gases is a big challenge to the world, especially in arid and semi-arid area. Afforestation is the most effective strategy to absorb carbon dioxide in terrestrial ecosystems and reduce global warming of the earth. The purpose of this study is to evaluate the effects of planting Eucalyptus camaldulensis and Amygdalus s...

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