نتایج جستجو برای: air quality control
تعداد نتایج: 2141727 فیلتر نتایج به سال:
Background:Consequences of air pollution on the health effects, including the formation and aggravation of respiratory ,neurological and cardiovascular disease, caused air quality monitoring and control as something inevitable in most urban & industrial areas issue that should be raised at national level. Industries are among important pollutant factors of the environment that contaminate thei...
امروزه کیفیت یک لغت شناخته شده در سراسر جهان است و بشدت مورد توجه مشتریان قرار گرفته است . از طرف دیگر مفهوم کیفیت به شکلی مطرح است که بیانگر نوع مدیریت یک سازمان می باشد و در واقع کیفیت جوهره مدیریت یک سازمان را بیان می کند، اینجاست که آنرا بعنوان سیستمی جامع و فراگیر می دانند که با مشارکت کلیه افراد در پی افزایش بهره وری و بهبود مستمر فرآیندها و فرآورده های سازمان و تامین نیازها و انتظارات حا...
The air quality in Taiwan, at present, is determined by a pollution standard index (PSI) that is applied to areas of possible serious air pollution and Air Quality Total Quantity Control Districts (AQTQCD). Many studies, both in Taiwan and in other countries have examined the characteristics and levels of air pollution with PSI. This study uses air quality data collected from eight automatic ai...
Proposed emission control strategies for reducing ozone and particulate matter are evaluated better when air quality and health effects models are used together. The Community Multiscale Air Quality (CMAQ) model is the US Environmental Protection Agency's model for determining public policy and forecasting air quality. CMAQ was used to forecast air quality changes due to several emission contro...
Guangzhou is the capital and largest city (land area: 7287 km(2)) of Guangdong province in South China. The air quality in Guangzhou typically worsens in November due to unfavorable meteorological conditions for pollutant dispersion. During the Guangzhou Asian Games in November 2010, the Guangzhou government carried out a number of emission control measures that significantly improved the air q...
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
this study determined optimum conditions for drying pomegranate arils in a solar dryer. a cabinet solar dryer was used in active and mixed modes. the response surface method was employed with nine treatments (runs) and a control run (3 m/s air velocity and 2 cm in thickness) and five replications. the bryte cultivar was tested and samples were dried to approximately 10% moisture. drying time, v...
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