نتایج جستجو برای: water sample

تعداد نتایج: 939644  

2016
Buchari LAPAU

Hot working condition is the integration result among temperature, humidity, velocity of air movement, and hot radiation from the body's workers, which causes the decrease of systol-icblood pressure withits complication (1). The kitchen is a place with hot working condition because there is process of cooking using the instruments producing hot radiation making the space of kitchen to be hot. A...

Journal: :BMC Public Health 2005
Sema Ertug Pinar Okyay Munevver Turkmen Hasan Yuksel

BACKGROUND The aims of the present study were to determine the prevalence of toxoplasmosis in pregnant women at first trimester of their pregnancy and to follow up the seroconversion for next two trimesters, and to identify the risk factors and possible contamination routes in Aydin province, Turkey. METHOD The sample size was calculated as 423 on a prevalence of 50%, d=0.05 at a confidence l...

2017
Mason Chen

Fractionation is important to understand someone’s health. How we can simulate blood fractionation through a simple, inexpensive ink spread experiment more about blood fractionation and liquid chromatography. Cotton will spread on ink the most because it has the most pores. Pilot ink spreads fast because it is water-based (low viscosity). Higher temperatures should result in more spread because...

Journal: :محیط شناسی 0
مختار مهدوی دانشکدة بهداشت دانشگاه علوم پزشکی تهران، فوق لیسانس مهندسی بهداشت محیط سیمین ناصری دانشکدة بهداشت دانشگاه علوم پزشکی تهران، استاد گروه مهندسی بهداشت محیط امیرحسین محوی دانشکده بهداشت دانشگاه علوم پزشکی تهران، استادیار گروه مهندسی بهداشت محیط مسعود یونسیان دانشکدة بهداشت دانشگاه علوم پزشکی تهران، استاد گروه مهندسی بهداشت محیط محمود علیمحمدی دانشکدة بهداشت دانشگاه علوم پزشکی تهران، استادیار گروه مهندسی بهداشت محیط

today many countries have water shortage problems, so most of them compel to resort to desalination processes. this paper describes the effect of indirect contact freezing by external cooling for desalination of seawater and brackish water. although various types of processes are introduced for desalination and such processes as reverse osmosis (ro) and multi-effect distillation (med) are used ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

Journal: :Revista Brasileira de Ciência do Solo 2018

Journal: :Journal of Physics: Conference Series 2019

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید