نتایج جستجو برای: noise stress

تعداد نتایج: 630573  

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

growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...

2015
Tye A. Nichols Todd W. Anderson Ana Širović Craig A Radford

Anthropogenic noise in the ocean has increased substantially in recent decades, and motorized vessels produce what is likely the most common form of underwater noise pollution. Noise has the potential to induce physiological stress in marine fishes, which may have negative ecological consequences. In this study, physiological effects of increased noise (playback of boat noise recorded in the fi...

Journal: :Environmental Health Perspectives 1981

Journal: :acta medica iranica 0
azam moslehi department of physiology & pharmacology, school of medicine, qom university of medical sciences, qom, iran. fatemeh nabavizadeh department of physiology, school of medicine, tehran university of medical sciences, tehran, iran. mansoor keshavarz department of physiology, school of medicine, tehran university of medical sciences, tehran, iran. nematollah rouhbakhsh department of audiology, tehran university of medical sciences, tehran, iran. masoud sotudeh department of pathology, shariati hospital, tehran university of medical sciences, tehran, iran. ehsan salimi department of pharmacy, tehran university of medical sciences, tehran, iran.

noise is considered as one of the most severe sources of environmental and workplace constraints. many noise effects are well known on immune function, hormonal levels, cardiovascular and respiratory systems. in this study, our aim is to evaluate the effects of traffic noise exposure on basal and stimulated gastric pepsin secretion. 48 male rats were exposed to traffic noise (86 db) for a short...

Journal: :Journal of Korean Acedemy of Dental Technology 2014

Journal: :Indian Journal of Health Sciences and Biomedical Research (KLEU) 2019

Journal: :Judgment and Decision Making 2022

Abstract We analyze the impact of acute stress on risky choice in a pre-registered laboratory experiment with 194 participants. test causal stability risk preferences by separating noise decision-making from an actual shift preferences. find no significant differences attitudes across conditions aggregate, using both descriptive analyses as well structural estimations for aversion and different...

Journal: :international journal of occupational hygiene 0
mohammadjavad jafari school of public health, department of occupational health engineering shahid beheshti university of medical sciences, tehran, iran. ali dehghani school of public health, department of occupational health engineering shahid beheshti university of medical sciences, tehran, iran. ali khavanin faculty of medicine, tarbiat modaress university, tehran, iran. mansour azari-reza-zade school of public health, department of occupational health engineering shahid beheshti university of medical sciences, tehran, iran. ali dadashpourahangar faculty of medicine, tarbiat modaress university, tehran, iran.

simultaneous exposure of highly-used chemical and physical agents are expected to happen in many occupations. in the present study the impact of simultaneous exposure to noise and formaldehyde on oxidative stress in blood and liver tissue of rat was investigated. animal study was conducted in the school of public health, shahid beheshti university of medical scineces, tehran, iran in 2013. a to...

Background and Aim:  So far, few studies have assessed the effect of noise on fertility capacity thus this study aimed to evaluate the possible protective effects of cinnamon extract on testicular tissue changes and fertility capacity in male rats exposed to noise stress. Materials and Methods: In this experimental study, 40 male rats were randomly divided into 5 experimental groups. Grou...

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