نتایج جستجو برای: air organic pollutions

تعداد نتایج: 400135  

2017
Dhirendra Mishra Pramila Goyal

Air pollution forecasting is the most important environmental issue in urban areas as it is useful to assess the effects of air pollutants on human health. It has been observed that the air pollution has been increased above the standard level in the urbanized area of Delhi and will be a major problem in the next few years. Therefore, the main objective of the present study is to develop the mo...

Journal: :بوم شناسی کشاورزی 0
قربانعلی اسدی علی مومن مینا نورزاده نامقی سرور خرم دل

enhancing nitrogen use efficiency is one of the most important strategies for improving productivity in agriculture and reducing risk of environmental pollutions in sustainable agriculture. in order to study the effects of different levels of organic manure and chemical fertilizer on nitrogen uptake efficiency (nupe), nitrogen utilization efficiency (nute) and nitrogen use efficiency (nue) of i...

Journal: :Frontiers in Materials 2021

Climate change, infrastructure resilience, and resource recovery from waste have emerged as grand challenges for civil engineers in the 21st century. Wicked problems associated with these global are necessitating innovative, multidisciplinary thinking multiscale, integrated solutions that spurring development of a new field—construction biotechnology. While field construction biotechnology span...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

Journal: :international journal of nanoscience and nanotechnology 2013
a. h. javid m. gorannevis f. moattar a. mashinchian moradi p. saeeidi

air pollution has always been a major problem in metropolises. volatile organic compounds are one of the major pollutants that are caused by incomplete combustion of fuels in vehicles and gasoline evaporation, especially in fueling stations. removing these pollutants through traditional methods has always been considered. the paper investigates and studies chemical adsorption behavior of benzen...

Journal: :health scope 0
amirabbas mofidi department of occupational health engineering, faculty of medical sciences, tarbiat modares university, tehran, ir iran hassan asilian department of occupational health engineering, faculty of medical sciences, tarbiat modares university, tehran, ir iran; department of occupational health engineering, faculty of medical sciences, tarbiat modares university, tehran, ir iran. tel.: +98-9123873932, fax: +98-2182883825 ahmad jonidi jafari department of environment health engineering, faculty of medical sciences, tarbiat modares university, tehran, ir iran

conclusions results indicated that annular fluidized bed reactor’s adsorbers are useful techniques for vocs adsorption. comparison of two particle ranges indicates that in all concentrations and all flow rates of the experiments, smaller particle size adsorption are better. in superficial velocity above the minimum fluidization velocity, pressure drop of fluidized beds are less than the pressur...

Journal: :JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 1977

2016
Haitao Liu Jie Meng Wenjing Bo Da Cheng Yong Li Liyue Guo Caihong Li Yanhai Zheng Meizhen Liu Tangyuan Ning Guanglei Wu Xiaofan Yu Sufei Feng Tana Wuyun Jing Li Lijun Li Yan Zeng Shi V. Liu Gaoming Jiang

Organic farming (OF) has been believed to be capable of curtailing some hazardous effects associated with chemical farming (CF). However, debates also exist on whether OF can feed a world with increasing human population. We hypothesized that some improvements on OF may produce adequate crops and reduce environmental pollutions from CF. This paper makes comparative analysis of crop yield, soil ...

2017
Shenglan Zeng Yu Zhang

Meteorological conditions significantly influence air pollution. The Chengdu plain, with few external pollution sources and homogeneous meteorological conditions, is a natural lab to study the effects of meteorological elements on the diffusion and dissipation of pollutants. Large-scale and long-duration haze events occurred all over China during the Spring Festival in 2014. This study tries to...

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