نتایج جستجو برای: air borne disease

تعداد نتایج: 1702659  

Journal: :iranian journal of nursing and midwifery research 0
parinaz poursafa roya kelishadi

background : health professionals face the adverse health effects of climate change and air pollution in their practices. this review underscores the effects of these environmental factors on maternal and children’s health, as the most vulnerable groups to climate change and air pollution. methods : we reviewed electronic databases for a search of the literature to find relevant studies publish...

Journal: :Current opinion in pediatrics 2011
Aaron S Bernstein Samuel S Myers

PURPOSE OF REVIEW To present the latest data that demonstrate how climate change affects children's health and to identify the principal ways in which climate change puts children's health at risk. RECENT FINDINGS Data continue to emerge that further implicate climate change as contributing to health burdens in children. Climate models have become even more sophisticated and consistently fore...

2005
TEPIDARIORUM KOCH CHARLES WALCOTT

The common house spider, Achaearanea tepidariorum, has a sensitive vibration receptor in each of its eight legs. The receptor has been shown to respond to air-borne sound as well as to direct vibration (Walcott & Van der Kloot, 1959). But for a spider on its web a more usual source of information about the outside world comes from vibrations of the web strands themselves. What is the response o...

2007
Neeraj Bhargava Sushil Kumar

Laser Range Finder (LRF) is a most commonly used sensor for non-contact distance measurement and its applications cover wide areas of civil and defense. This paper discusses the design of Time of Flight (TOF) based single channel pulsed LRF, in which single optical channel has been used for transmitting and receiving of laser pulse with the day sighting capability. It offers considerable size r...

Journal: :The Journal of Experimental Medicine 1949
A. G. Heppleston

1. Pulmonary tuberculosis in unselected rabbits, induced by primary quantitative air-borne infection with human type tubercle bacilli, may retrogress or progress. Some animals whose disease was in a stationary condition might have fallen into one of the above groups had the experiments been prolonged. 2. Within the limits of the observations natural resistance or susceptibility appears to be th...

Journal: :Journal of bacteriology 1942
H C Rentschler R Nagy

In the study of the bactericidal action of ultraviolet radiation on air-borne organisms, it is difficult to determine the number of bacteria per unit volume floating in the air and to measure the lethal radiation to which the organisms were exposed. In studying this action, Fair and Wells (1935) atomized a water suspension of Escherichia coli into a room and measured the normal rate at which th...

Journal: :Applied microbiology 1957
T W KETHLEY W B COWN E L FINCHER

In the course of investigations on the effect of chemical vapors on air-borne bacteria, a better understanding of the state of the air-borne organism was sought through studies on the nature and composition of certain experimental bacterial aerosols. It was felt that an appreciation of the physical characteristics of the air-borne particle would add to our understanding of the factors which det...

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...

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