نتایج جستجو برای: exposure control

تعداد نتایج: 1589292  

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
masoud ghanbari seyed bagher mortazavi ali khavanin mozafar khazaei asad vaisi-raygani hosein bani amerian

background: there is a great concern for the possible adverse effects of radiofrequency radiations of cell phones. moreover, unwanted sound is one of the physical pollutants of current societies. thus, the present study was conducted to examine the effect of cell phone waves, sound, and simultaneous effect of cell phone waves and sound on sperm viability and total antioxidant capacity of blood ...

ژورنال: طب کار 2013
امجد سردرودی, حسین, درمحمدی, علی , موسوی, سعید , گلمحمدی, رستم,

Background: Noise Induced Hearing Loss (NIHL) is one of the most common occupational diseases in the world. About 16% of hearing loss is associated with noise exposure in the workplaces. The aim of this research was investigation of the relationship between noise exposure and hearing loss. Methods: This cross-sectional study was conducted in 2010 on1062 workers in Tabriz Tractor Manufacturing ...

Alireza Khoshbin Khoshnazar Milad Mokhtarian Peyman Hejazi, Shahin Nooshi

Introduction The main goal of this study was to perform quality control test on all radiography units operating in Golestan province of IRAN. Materials and Methods Forty-four X-ray units were examined based on general accepted programs for quality control. Eight parameters including kVp accuracy, kVp reproducibility, mA-time reciprocity, exposure linearity, exposure reproducibility, timer accur...

Journal: :cell journal 0

oxidative stress arises when there is a marked imbalance between the production and removal of reactive oxygen species that may lead to several diseases. cadmium is an environmental and industrial pollutant that results in formation of free radicals. the aim of this study was to determine the oxidative stress status in cadmium exposure workers. this is a cross-sectional study of 36 people of ca...

Introduction Quality control (QC) techniques are used in monitoring and maintenance of the components of an x-ray system. QC of radiology devices plays a significant role in reduction of medication dose and optimization of image quality. This study aimed to conduct QC tests on randomly selected radiology devices, installed in diagnostic imaging departments of Iran. Materials and Methods In tota...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
parviz bashiri mohammad hossein hadad khodaparast naser sedaghat farideh tabatabaei mahdi nassiri mahalati

in this research effectiveness of immersing three types of contaminated pistachios fresh with hull (exocarp or epicarp), dried in shell and dried with hull from ohady cultivar in ozonated water 0 ppm (control), 4 and 8 ppm ozone concentrations in aqueous solution for range of exposure times 0(control), 2, 4, 6, 8, 10 and12 hours, to decrease of aflatoxin (b1, b2, g1, g2 and total) were investig...

F. Namazi, F. Soleimani, G.A. Jelodar, M. Azimzadeh,

Background: Exposure to electromagnetic radiation may impair memory. This study was conducted to evaluate the effect of radiofrequency wave (hereafter referred to as RFW) on passive avoidance learning and memory in healthy males and females. Materials and Methods: Ten adult male and ten female Sprague-Dawley rats (230±20 gr) were randomly divided into four groups including two control groups (o...

امیدواری, منوچهر , حیدری, محدثه , محمد فام, ایرج ,

Introduction: One of the most important threats for employees working in chemical industries is exposing to the chemical materials. Lack of precaution and control regulations during working with chemicals can have irreparable consequences. So, in order to achieve an effective control program, it is necessary to have an appropriate assessment of the procedures involving exposure to the chemica...

Objective(s): This study aimed to investigate the effect of Shogaol on dextran sodium sulfate (DSS)- induced ulcerative colitis (UC) in mice compared to an immune-suppressant chemotherapeutic medicine, known as 6-thioguanine (6-TG). Materials and Methods: Thirty-six adult BALB/c mice were divided into six groups: group 1 (positive control): no DSS exposure and no treatment; group 2 (negative co...

Journal: :iranian journal of basic medical sciences 0
mohammad reza arab cell andmilecular research center,, faculty of medicine, zahedan university of medical sciences, zahedan, iran ramezan mirzaei faculty of medicine, zahedan university of medical sciences, zahedan, iran mehrbod karimi department of pathology, faculty of medicine, zahedan university of medical sciences, zahedan, iran rezvaneh mashhadi imam ali hospital, zahedan university of medical sciences, zahedan, iran

objective(s) to determine the potential toxic effects of manual soldering flux cored solder wire on lung of the rat as an experimental model. materials and methods a total number of 48 adult male rats were divided into experimental (n= 30) and control (n= 18) groups. based on exposure time to solder fume, each group was further subdivided into 2, 4 and 6 week subgroups. rats of experimental gro...

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