extremely low frequency (elf) and radio frequency (rf) electromagnetic field may affect biological systems by raising generation free radicals by decline activities of glutathione peroxidase dismutase or increase in the lifetime of free radicals with inhibited pretreatment of cells antioxidant like that alpha tocopherol. elf and  rf electromagnetic  field maycan damaged dna  with raising level ...

Accurate detection of weak periodic signals within noise and possibility of secure messaging have made Duffing oscillator (DO) highly important in the field of communication. Investigation on the properties of DO is thus ardently sought for. An elegant approach to accomplish the same is to fabricate electronic circuit simulating DO non-linear equation and to study the effect of input signal amp...

Background : In every geographical area according to their social civilization, specific abnormalities and outcomes may be occurred in spinal cord and in the case of recognition they will be corrected with specific movements and proper behavioral patterns. So the aim of the present study was to investigate the rate and reasons of Khorramabad Azad university students’ spinal abnormalities. Mate...

The hot gases produced by the internal combustion engines passes through the exhaust valve and causes high temperatures in the exhaust valve and its seat. To avoid damaging the exhaust valve, heat must be transferred from the valve to its seat during the contact they make at the opening and closing cycle. Heat transfer rate from the exhaust valve to its seat is a function of many factors. One o...

Background & aim: The present study aimed to evaluate  the frequency and severity of nausea and vomiting during pregnancy (NVP) and to investigate the association between psychosocial health and the severity of NVP. Methods:This cross-sectional study was performed on 200 eligible pregnant women with nausea and vomiting at three prenatal care centers in Kashan, Iran. The participants completed d...

In this study frequency and composition of plankton in Shadegan wetland was carried out in 5 stations during 2007-2008. Genus qualitative identification and their composition and quantitative frequency aspect were studied (for phytoplankton chlorophyll a). Frequency of total 42 genus phytoplankton in 4 classes Bacilariophyceae (Diatom), Cyanophyceae, Chlorophyceae and Dinophyceae are 69.4, 22.2...

Background: Occurs as a result of long-term exposure to stress, job burnout threatens the health of personnel. Objectives: Considering the important role of healthcare personnel in maintaining and promoting people’s health, the current study investigated the job burnout frequency and its association with job performance among healthcare personnel. Methods: This correlational and cross-s...

Background: Patients who undergo major orthopedic surgery are at risk of acute kidney injury (AKI) due to blood loss, electrolyte disorders, infection, and the presence of other co-morbidities. In this study, the frequency and risk factors of AKI were investigated. Objective & Methods: This study is a cross-sectional-analytical study with a sample size of 180 people. The studied population wer...