نتایج جستجو برای: term exposure

تعداد نتایج: 862601  

2010
M Arabi Gayatri Joshi Kavya P Parameswaran Abhik Raj Subedi

Noises are always present in an image posing higher or lower complexity in removal and however it is necessary to remove those noises to obtain a better image. There are various types of filters available that help us to remove those noises; only when a right type of filter is used the best result could be obtained. This paper compares the performance of filters namely median, Weiner, average a...

ژورنال: سلامت کار ایران 2017

Background and aims: Formaldehyde (FA) is a colorless toxic gas used as a disinfectant and preservative and known as a carcinogen and strong irritant. Due to its germicidal, preservative and fixative properties, formaldehyde or other chemicals that potentially produce formaldehyde, are used in some cosmetics. OSHA has warned about hair dresser’s exposure to FA higher than thre...

Inorganic arsenicals are worldwide environmental contaminants that affect molecular characteristics in biological systems and lead to genomic and epigenomic instability as well as epithelial mesenchymal transition (EMT). In this study, we aimed to investigate whether low levels of sodium arsenite (iAsIII) can influence EMT and genomic instability through microsatellite analysis. We have also de...

Journal: :iranian journal of radiation research 0
m. jadidi physiology research center, semnan university of medical sciences, semnan, iran s.m.p. firoozabadi department of medical physics, tarbiat modares university, tehran, iran a. rashidy-pour physiology research center, semnan university of medical sciences, semnan, iran b. bolouri department of medical physics, iran university of medical sciences, tehran, iran y. fathollahi department of physiology, tarbiat modares universit, tehran, iran

introduction: over the last decade, exposure to non-ionizing electromagnetic waves due to base station antenna has increased. this in vivo study was planned for evaluating the effects of whole-body exposure to 950 mhz field of gsm mobile phone system on rat dentate gyrus long-term potentiation. materials and methods: 24 naive male wistar rats (3 month old, 225|¡|25 g) were randomly divided in t...

A. Rashidy-Pour, B. Bolouri, M. Jadidi, S.M.P. Firoozabadi, Y. Fathollahi,

Introduction: Over the last decade, exposure to non-ionizing electromagnetic waves due to base station antenna has increased. This in vivo study was planned for evaluating the effects of whole-body exposure to 950 MHz field of GSM mobile phone system on rat dentate gyrus long-term potentiation. Materials and Methods: 24 naive male Wistar rats (3 month old, 225|¡|25 g) were randomly divided in t...

Abhishek Kumar, Ajai Kumar Srivastav, Maniram Prasad, Sunil Kumar Srivastav,

Background: We aimed to evaluate effect of Euphorbia royleana exposure on histocytology of corpuscles of Stannius in fish, Heteropneustes fossilis. Methods: Fish were subjected to 2.47 mg/L and 0.618 mg/L of E. royleana for short-term and long-term exposure, respectively. Blood samples were collected on 24, 48, 72 and 96 h in short-term and after 7, 14, 21, and 28 d in long-term experiment a...

Journal: :iranian red crescent medical journal 0
mohammad hassan karimfar department of anatomy, faculty of medicine, zahedan university of medical sciences, zahedan, ir iran afshar bargahi the persian gulf marine biotechnology research centre, bushehr university of medical sciences, bushehr, ir iran darab moshtaghi departments of surgery, faculty of medicine, bushehr university of medical sciences, bushehr, ir iran parviz farzadinia department of biology and anatomical sciences, faculty of medicine, bushehr university of medical sciences, bushehr, ir iran; department of biology and anatomical sciences, faculty of medicine, bushehr university of medical sciences, p. o. box: 3631, bushehr, ir iran. tel /fax: +98-7733450692

results long-term exposure to lead acetate caused histopathology effects including dilatation, congestion, nuclei heterochromatic effects, increase in diameter of renal tubules and urinary barrier thickness in rabbit renal tissue. conclusions quantitative and qualitative results of long-term lead acetate exposure showed many histopathology side-effects, especially in the urinary barrier. materi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

‏‎the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis , a one- way anova experimental design was carried out. 24 senior student of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inte...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
shahram vosoughi hassan asilian mahabadi ali khavanin mojdeh salehnia abdolhossein shahverdi vahid esmaeili

background: formaldehyde (h2c = o), is a member of aldehyde family with a simplest organic molecule, used in various industries. the aim of this experimental study was to investigate the effects of simultaneous formaldehyde and noise exposure on hormonal pituitary-gonadal axis in adult male mice. methods: 46 adult male mice were randomly assigned to one control group and three experimental grou...

Journal: :health scope 0
shahram vosoughi department of occupational and environmental health, school of medical sciences, tarbiat modares university, tehran, ir iran ali khavanin department of occupational and environmental health, school of medical sciences, tarbiat modares university, tehran, ir iran; corresponding author: ali khavanin, jalale-ale-ahmad highway, tarbiat modares university, faculty of medical sciences, department of occupational and environmental health, p.o. box 14115-175, tehran, ir iran, tel.: +98- 2182883825, fax: +98-2182883825, e-mail: mojdeh salehnia department of anatomical sciences, school of medical sciences, tarbiat modares university, tehran, ir iran hassan asilian mahabadi department of occupational and environmental health, school of medical sciences, tarbiat modares university, tehran, ir iran ardalan soleimanian department of occupational and environmental health, school of medical sciences, tarbiat modares university, tehran, ir iran

conclusions exposure to formaldehyde vapor can destroy testicular structure and decrease percentages of sperm count and progressive motility. the present study indicated that a reduction in the percentage of progressive motile sperm may be potentiated by noise (700-5700 hz) in the simultaneous exposure to formaldehyde and noise group. thus, it can be anticipated that simultaneous exposure to fo...

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