نتایج جستجو برای: acute and chronic exposure

تعداد نتایج: 17068453  

Journal: :international journal of environmental research 2011
a. annabi i. messaoudi a. kerkeni kh. said

in this study, cadmium (cd) accumulation was studied in an experimental aquatic exposure. mosquitofish (gambusia affinis) were acutely exposed for 96 h to a high concentration of cd (12 mg/l) and were chronically exposed to a low concentration of cd(0.4 mg/l) for 30 days. cd accumulation profiles differed between the two cd exposures. the cd concentation in g. affinis tissues increased linearly...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1380

چکیده ندارد.

Journal: :international journal of environmental research 0
a. annabi ur 09 es 30: génétique, biodiversité et valorisation des bioressources. institut supérieur debiotechnologie, 5000 monastir, tunisia i. messaoudi ur 09 es 30: génétique, biodiversité et valorisation des bioressources. institut supérieur debiotechnologie, 5000 monastir, tunisia a. kerkeni eléments trace, radicaux libres, systèmes antioxydants et pathologies humaines et environnement. faculté de medecine, 5000 monastir, tunisia kh. said ur 09 es 30: génétique, biodiversité et valorisation des bioressources. institut supérieur debiotechnologie, 5000 monastir, tunisia

in this study, cadmium (cd) accumulation was studied in an experimental aquatic exposure. mosquitofish (gambusia affinis) were acutely exposed for 96 h to a high concentration of cd (12 mg/l) and were chronically exposed to a low concentration of cd(0.4 mg/l) for 30 days. cd accumulation profiles differed between the two cd exposures. the cd concentation in g. affinis tissues increased linearly...

Journal: :iranian journal of basic medical sciences 0
jamile ozbaki school of biology, damghan university, damghan, iran iran goudarzi school of biology, damghan university, damghan, iran mahmoud elahdadi salmani school of biology, damghan university, damghan, iran ali rashidy-pour laboratory of learning and memory, research center and department of physiology, school of medicine, semnan university of medical sciences, semnan, iran

objective(s): due to the prevalence and pervasiveness of stress in modern life and exposure to both chronic and acute stresses, it is not clear whether prior exposure to chronic stress can influence the impairing effects of acute stress on memory retrieval. this issue was tested in this study. materials and methods: adult male wistar rats were randomly assigned to the following groups: control,...

Objective(s): Due to the prevalence and pervasiveness of stress in modern life and exposure to both chronic and acute stresses, it is not clear whether prior exposure to chronic stress can influence the impairing effects of acute stress on memory retrieval. This issue was tested in this study. Materials and Methods: Adult male Wistar rats were randomly assigned to the following groups: control,...

This study demonstrates the changes in six different pathophysiological parameters such as body weight, body temperature, fecal pellet count, blood-brain barrier (BBB) permeability, plasma corticosterone level and emergence of hemorrhagic peptic ulcer spots due to exposure to high environmental heat in three different age groups of freely moving rats. Methods: Each age group of rats was sub di...

Journal: :iranian biomedical journal 0
rakesh kumar sinha

this study demonstrates the changes in six different pathophysiological parameters such as body weight, body temperature, fecal pellet count, blood-brain barrier (bbb) permeability, plasma corticosterone level and emergence of hemorrhagic peptic ulcer spots due to exposure to high environmental heat in three different age groups of freely moving rats. methods: each age group of rats was sub div...

ارمی, الهه, اژدری‌زرمهری, حسن, حیدری‌اورنجقی, نیما , صالحی, بقیه ا... , صوفی‌آبادی, محمد , قاسمی, المیرا , مهدی‌پور, حبیب ا... ,

  Background and Objectives : Acute and chronic stress induces hormonal and neuronal changes which affect both pain threshold and nociceptive behaviors. But the effect of acute and chronic immobilization stress on formalin induced nociceptive behaviors are unknown. Therefore, this study evaluated the effects of acute and chronic immobilization stress formalin test on the male rat.   Material an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1388

this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...

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 sednior students 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 inter...

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