نتایج جستجو برای: greenhouse gas

تعداد نتایج: 263240  

Journal: :Eos, Transactions American Geophysical Union 2002

2016
David W. Smith

Livestock and Poultry Environmental Learning Center Animal agriculture contributes about three percent of all anthropogenic (humancaused) greenhouse gas emissions in the U.S. (EPA, 2011). Although this is small relative to other economic sectors such as transportation and energy, animal agriculture is also being called upon to defend its environmental impact and continually demonstrate its comm...

Journal: :international journal of advanced biological and biomedical research 2013
ashkan nabavi pelesaraei sajjad shaker koohi mohammad bagher dehpour

this paper studies the modeling and optimization of energy use and greenhouse gas emissions of eggplant production using artificial neural network and multi-objective genetic algorithm in guilan province of iran. results showed that the highest share of energy consumption belongs to diesel fuel (49.24%); followed by nitrogen (33.30%). the results indicated that a total energy input of 13910.67 ...

Journal: :environmental health engineering and management 0
mehdi ahmadi environmental technologies research center, department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran maedeh rozkhosh science and research branch, islamic azad university of khozestan, faculty of environment, ahvaz, iran nemat-allah jaafarzadeh haghighifard environmental technologies research center, department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran

background: iran is located in the seventh rank in terms of co2 emissions resulting from the fuel combustion in the world. gas compressor booster stations, due to the several sources of contaminants, are causing the release of large amounts of co2 and ch4, which will cause climate change therefore, estimating the emissions of the gases from oil and gas, different processing units are necessary....

Journal: :Environmental science & technology 2005
Galen Mckinley Miriam Zuk Morten Höjer Montserrat Avalos Isabel González Rodolfo Iniestra Israel Laguna Miguel A Martínez Patricia Osnaya Luz M Reynales Raydel Valdés Julia Martínez

Complex sociopolitical, economic, and geographical realities cause the 20 million residents of Mexico City to suffer from some of the worst air pollution conditions in the world. Greenhouse gas emissions from the city are also substantial, and opportunities for joint local-global air pollution control are being sought. Although a plethora of measures to improve local air quality and reduce gree...

2016
Mehdi Ahmadi Mehrshad Dastorian Nemat Jafarzadeh Sahand Jorfi Bahman Ramavandi

Since global warming due to greenhouse gas emissions is no respecter of geographical boundaries of countries, concerted mitigation activities such as Clean Development Mechanism (CDM), are suitable. In this mechanism, some developed countries can gain certified emission reduction credits from emission reduction actions undertaken in developing countries. Thus, the data of greenhouse gas emissio...

2016
Jianping Ge Yalin Lei Qun Xu Xibo Wang

In this study, a decomposition and emissions matrix is developed to identify the roles (giver or taker) played by the sectors in the greenhouse gas emissions for the economy of Beijing in China. Our results indicate that services were the most important emitter if we consider the total (direct and indirect) emissions. In addition to Construction, Scientific studies and technical services and Fi...

Journal: :Environmental pollution 2002
S Del Grosso D Ojima W Parton A Mosier G Peterson D Schimel

We present evidence to show that DAYCENT can reliably simulate soil C levels, crop yields, and annual trace gas fluxes for various soils. DAYCENT was applied to compare the net greenhouse gas fluxes for soils under different land uses. To calculate net greenhouse gas flux we accounted for changes in soil organic C, the C equivalents of N2O emissions and CH4 uptake, and the CO2 costs of N fertil...

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