نتایج جستجو برای: biological effect of laser radiation

تعداد نتایج: 21281389  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1370

the subjects of the study are only the tefl teachers and students at gilan university. to obtain the desired data, a questionnaire which was based on the theories and disecussions gathered, was used as the main data gathering instrument. to determine the degree of relationship between variables, covariance and pearson product moment correlation coefficient were the formulas applied. the data we...

A Amraee, A Rezaeyan A Safari, A Salajegheh M Najafi, P Amini R Yahyapour,

Bystander or non-targeted effect is known to be an interesting phenomenon in radiobiology. The genetic consequences of bystander effect on non-irradiated cells have shown that this phenomenon can be considered as one of the most important factors involved in secondary cancer after exposure to ionizing radiation. Every year, millions of people around the world undergo radiotherapy in order to cu...

Journal: :iranian biomedical journal 0
سوسن کبودیان اردستانی sussan k. ardestani مجتبی امانی mogtaba amani آمینا کریمی نیا amina kariminia

elevated amount of the free radicals due to ionizing radiation causes deteriorating damage on immune system. therefore, we made attempts to investigate the protective effect of vitamin e (vit-e), a biological antioxidant in balb/c mice, so as to find an affordable prophylactic supplementation for individuals who are at risk. several groups of mice were selected and exposed to sub-lethal g -irra...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده زبانهای خارجی 1389

abstract this study examines the effect of teaching lexical inferencing strategies on developing reading comprehension skill of iranian advanced efl learners. participants were female students of meraj and shokouh institudes of garmsar a quasi-experimental design using two intact advanced classes of efl students at meraj and shokouh institutes. as the first step, a general toefl proficiency te...

Introduction: Radiation from cell phones has been associated with an increased risk of cancer. The literature has reported evidence of certain biological effects resulting from exposure to various wavelengths, doses, and intensities of radiofrequency radiation. The present study aimed to evaluate the possible adverse effects of radiation from a GSM mobile phone operating at 900 MHz on human mel...

Journal: :cell journal 0

introduction: this study was conducted to evaluate the fibroblast healing of tenotomized dutch rabbits treated with a low power laser radiation. materials and methods: male rabbits were divided in a control and exprerimental groups randomly. achills tendon of animals was cut about 1.5cm above its calcaneal insertion and sutured according to the modified kessler procedure. in the control groups,...

H. Mozdarani, M. Mahdavi,

Background: Radioprotective effect of famotidine was previously shown on radiation induced micronuclei and chromosomal aberrations in human peripheral lymphocytes and mouse bone marrow cells however, its radioprotective property has never been studied in mouse spermatogenesis. It was also shown that vitamin C as an antioxidant also exert its radioprotective effect on many biological s...

Introduction: Low-energy helium-neon (He-Ne) laser beam lightis used in combination with sodium hypochlorite (Na2HOCl3) for clinical purposes. Regarding this, the present study aimed to investigate the effect of He-Ne laser (632.8 nm) and sodium hypochlorite on the calf thymus double-stranded deoxyribonucleic acid (ctdsDNA) molecule.  Materials and Methods: For the purpose of the study, ctdsDNA...

A Sazegarniya A.R Montazer abadi H Esmaeili S.A Ale davood S.M.H Bahreini tosi

Background & Aims: In this study with the aim of benefiting from non-laser sources in photodynamic therapy, photo and radio sensitivity of indocyanine green as a sensitizer in photodynamic and radiation therapies were investigated. Methods: Based on the broad absorption peak of indocyanine green and using non-coherent light, the experiments were performed on human cells derived from breast canc...

Journal: :cell journal 0

introduction: with regarding the positive effects of low power gallium aluminium arsenid laser (laser) on some muscloskeletal disorders in this investigation effects of laser on open skin full thickness wound in rat by histological and biomechanical methods were evaluated. materials & methods: 46 male sprague dawley rats randomly divided into control and experimental groups. under general anaes...

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