نتایج جستجو برای: air density

تعداد نتایج: 607238  

Journal: :Sustainability 2021

The high-rise and high-density housing development in nearby industry relocations is a general urban sprawl phenomenon fast-growing cities Southern China. Aside from the low price, improved air quality suburban area always reason for home buyers, but consistent monitoring of knowledge about how to plan estates are lacking. This paper investigates relationship between morphology three Shenzhen. ...

1994
Daniel Delahaye Jean-Marc Alliot Marc Schoenauer Jean-Loup Farges

In this paper, we show how genetic algorithms can be used to compute automatically a traac assignment of aircraft on the air network to increase Air Traac Control capacity in high density areas.

2004
S. T. Leong P. Laortanakul Shing Tet Leong

Ambient air quality and traffic density measurements were conducted during January to December 2001 at four air monitoring sites in Bangkok Metropolitan Region (BMR). The ambient air pollutants included carbon monoxide (CO), particulate matter (PM10), nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3) and benzene. The diurnal variations of air pollutant levels were generally identical to ...

2013
Monica W.K. Kan Lucullus H.T. Leung Peter K.N. Yu

A new version of progressive resolution optimizer (PRO) with an option of air cavity correction has been implemented for RapidArc volumetric-modulated arc therapy (RA). The purpose of this study was to compare the performance of this new PRO with the use of air cavity correction option (PRO10_air) against the one without the use of the air cavity correction option (PRO10_no-air) for RapidArc pl...

2015
Azadeh Tahmasebi Mohammad Mehdi Amin Parinaz Poursafa Bijan Iraj Hamidreza Sadeghiyan Roya Kelishadi Babak Sadeghian

OBJECTIVES Air pollution is a hazardous environmental problem with several adverse health effects including its impact on the development of chronic diseases as diabetes mellitus. This study aimed to investigate the association of geographical distribution of air quality index (AQI) and type 2 diabetes mellitus in an air-polluted city by using geographic information system (GIS). METHODS This...

اعظم, کمال, شاهطاهری, سید جمال الدین, کاکویی, زنده یاد حسین , گل حسینی, سید محمد جواد ,

  Background and Aim: Motor vehicles are an absolute necessity used extensively in all countries of the world. They are a major cause of air pollution with highly undesirable consequences. Thus, exposure to traffic pollution is a growing public health concern. Several studies indicate that people in the cabin of a vehicle inhale air with high concentrations of pollutants such as nitrogen oxides...

Journal: :Environmental research 2011
Molini M Patel James W Quinn Kyung Hwa Jung Lori Hoepner Diurka Diaz Matthew Perzanowski Andrew Rundle Patrick L Kinney Frederica P Perera Rachel L Miller

Exposures to ambient air traffic-related pollutants and their sources have been associated with respiratory and asthma morbidity in children. However, longitudinal investigation of the effects of traffic-related exposures during early childhood is limited. We examined associations of residential proximity and density of traffic and stationary sources of air pollution with wheeze, asthma, and im...

Journal: :Physics in medicine and biology 2015
T S A Underwood J Thompson L Bird A J D Scott P Patmore H C Winter M A Hill J D Fenwick

Standard commercial diode detectors over-respond within small radiation fields, an effect largely attributable to the relatively high mass-density of silicon. However, Monte Carlo studies can be used to optimise dosimeter designs and have demonstrated that 'mass-density compensation'-for example, introducing a low-density air-gap upstream of a diode's high-density silicon volume-can substantial...

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