نتایج جستجو برای: exposure to concentrations around 40

تعداد نتایج: 10780847  

A Ahangarpour H Fathi Moghaddam H Shahbazian M Badavi MJ Tahmasebi Birgani

Power stations produce a range of magnetic fields more than 20 mT which are harmful to those working or living around them. Several investigators have reported an increased health risk due to exposure to electric and magnetic fields (EMF) at 50 and 60 Hz. Several studies have been reported especially with increased tumor incidence, effects on reproduction and development, and neural and behavio...

A Ahangarpour H Fathi Moghaddam H Shahbazian M Badavi MJ Tahmasebi Birgani

Power stations produce a range of magnetic fields more than 20 mT which are harmful to those working or living around them. Several investigators have reported an increased health risk due to exposure to electric and magnetic fields (EMF) at 50 and 60 Hz. Several studies have been reported especially with increased tumor incidence, effects on reproduction and development, and neural and behavio...

ژورنال: سنجش و ایمنی پرتو 2013

According to radiation protection regulations, microwave radiation intensity should not exceed general public exposure limit defined in "Iranian Standard-Non ionizing radiation-exposure limits". Based on this standard, exposure limit for microwave ovens, which work at 2450 MHz, is 1mW/cm2. By implementing such standard, about 575 imported ovens, including different models and brands w...

2014
Mojtaba Shahnazi Fatemeh Badakhsh Abbas Azadmehr Mehrzad Saraei Mahmood Alipour Maryam Shahnazi Mehri Jamshidi

Surgical operation is the treatment of choice for hydatid cyst. To date, many protoscolicidal substances have been used for inactivation of hydatid cyst contents but most of these compounds may produce several side effects. The aim of this study was to evaluate the protoscolicidal effects of hypertonic glucose on protoscolices of hydatid cyst at different concentrations and exposure times. Prot...

Journal: :محیط زیست طبیعی 0
عاطفه اکبری دانش آموخته کارشناسی ارشد محیط زیست دانشکده منابع طبیعی و کویرشناسی دانشگاه یزد حمیدرضا عظیم زاده دانشیار دانشگاه یزد، دانشکده منابع طبیعی و کویرشناسی، پژوهشکده مناطق خشک و بیابانی

environmental pollution by various pollutants is one of the most important problems of this century. at least 20 elements, including chromium have been classified in toxic metals group, that half of them are released in the environment in excessive amounts of standards. chromium is a toxic pollutant that is widely spread in the environment and exists in cement and concrete. the aim of this stud...

2010
Nando Dulal Das Kyoung Hwa Jung Young Gyu Chai

BACKGROUND In Bacillus anthracis, lethal toxin (LeTx) is a critical virulence factor that causes immune suppression and toxic shock in the infected host. NF-kappaB is a key mediator of the inflammatory response and is crucial for the plasticity of first level immune cells such as macrophages, monocytes and neutrophils. In macrophages, this inflammatory response, mediated by NF-kappaB, can regul...

2017
Lydia Bondareva

Introduction Tritium (3H) in the natural environment is derived from natural or anthropogenic sources and can be used to estimate human radiation exposure around nuclear fuel reprocessing facilities. Elevated concentrations of 3H in the environment are generally associated with its production at nuclear facilities and exposure of local populations can be a public concern. The concentration of c...

Journal: :American journal of physiology. Gastrointestinal and liver physiology 1998
Serhat Bor Canan Caymaz-Bor Nelia A Tobey Solange Abdulnour-Nakhoul Esteban Marten Roy C Orlando

Epidemiological studies indicate a relationship between alcohol consumption and esophageal epithelial disease. We therefore sought the contribution of the direct effects of ethanol on esophageal epithelial structure and (transport and barrier) function. Epithelium from the rabbit was mounted in Ussing chambers and exposed luminally for 1 h to 1-40% ethanol. At concentrations of 1-5% potential d...

ژورنال: سلامت و محیط زیست 2015
ایزدپناه, فائزه, راستکاری, نوشین, یونسیان, مسعود,

Background and objective: Benzene is one of the main pollutants in air and one of the most extensive chemical compound used in both natural and industrial processes. Benzene exposure leads to the most dangerous adverse health effects, particularly blood cancer. The aim of this study was to evaluate the gas station workers’ exposure to benzene by measuring benzene in breathing air and urinary tr...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2017
L D Silva V C S Amaral M C Vinaud A M Castro H H A Rezende D B Santos C C Mello-Silva J C B Bezerra

Calcium is considered an essential element for the metabolism of aquatic snail Biomphalaria glabrata (Say, 1818), intermediate host of Schistosoma mansoni Sambon, 1907 in Brazil, and represents a limiting factor to its distribution and adaptation to the environment. This study investigated the effect of different concentrations of exogenous CaCO3 on the energetic metabolism of B. glabrata for b...

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