نتایج جستجو برای: high exposure density mhed

تعداد نتایج: 2582438  

Journal: :iranian journal of radiation research 0
s.m.j. mortazavi department of radiology, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran m.a. mosleh-shirazi radiotherapy physics unit, radiotherapy department, namazee hospital, shiraz university of medical sciences, shiraz, iran m.r. maheri civil engineering department, school of engineering, shiraz university, shiraz, iran h. yousefnia department of nuclear engineering, school of engineering, shiraz university of medical sciences, shiraz, iran s. zolghadri department of nuclear engineering, school of engineering, shiraz university of medical sciences, shiraz, iran a. haji-pour civil engineering department, school of engineering, shiraz university, shiraz, iran

background: in megavoltage radiotherapy rooms, ordinary concrete is usually used due to its low construction costs, although higher density concrete are sometimes used, as well. the use of high-density concrete decreases the required thickness of the concrete barrier hence, its disadvantage is its high cost. in a nuclear reactor, neutron radiation is the most difficult to shield. a method for p...

Background: The present systematic review and meta-analysis is designed in order to assess the association between passive and active smoking and lipid profile of children and adolescents. Materials and Methods:  An extensive search was done in databases of Medline, EMBASE, Web of Science, Scopus and CINAHL until October 2017. Two independent researchers screened articles and in the next step, ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1394

مقدمه:بیماری پریودنتال یک عفونت مزمن لثه است که در بافت های احاطه کننده دندان ایجاد و باعث از دست رفتن دندان می شود. بعلاوه این بیماری می تواند سبب تغییر در فیزیولوژی سیستمیک شود .فردی با التهاب مزمن، مستعد پیشرفت وسیع تخریب بافت و کاهش ظرفیت ترمیم بافتی می باشد. مطالعات مختلف ارتباط بین پریودنتیت ، هایپرلیپیدمی c-reactive protein, و fasting blood sugarرا نشان داده است. این مطالعه با هدف تأثیر ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1392

در این تحقیق خواص فیزیکی و مکانیکی چندسازه چوب پلاستیک حاصل از ترکیب های مختلف پلاستیک بازیافتی به همراه آرد چوب مورد بررسی قرار گرفت. نسبت پلاستیک های بازیافتی بر طبق نسبت پلاستیک ها در زباله های جامد شهری تهران انتخاب شد. برای این منظور چندسازه چوب پلاستیک با ماتریس یک نوع پلاستیک بازیافتی(high density polyethylene)، مخلوط دو hdpe/ low density polyethylene)، مخلوط سه (hdpe/ ldpe/ polypropylen...

ژورنال: طب کار 2022

Introduction: Lead is a toxic metal found in the Earth's crust and has been used by humans for 7,000 years due to its high density, flexibility and strength, and low melting point. The widespread use of this metal in industry and the exposure of workers has led to widespread environmental pollution and public health problems in many parts of the world. Due to the widespread use of lead in vario...

Journal: :iranian journal of blood and cancer 0
nahid einollahi shaban alizadeh nasrin dashti fariba nabatchian mitra zare bovani sakineh abbasi

background: serum lipids abnormalities have been observed in various forms of cancers including acute leukemia. investigators report decreased total cholesterol and hdl, and elevated triglyceride in leukemic patients. limited studies had been performed to discover the correlation between abnormal lipids profile and disease activity in leukemic patients in iran. this study was done to evaluate t...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
(pages 55-64) r. niazmand n. arabpouriani a. doaei a. niazmand m. sarabi jamab

abstract probiotic products highly affect the health of consumers by reducing the risk of heart attacks and improving of desirable microflora in intestinal tract. in this study the effect of yogurt (500g/d for 3 wk) enriched with either bifidobacterium bifidum or lactobacillus acidophilus on the level of cholesterol, low density lipoprotein (ldl) and high density lipoprotein (hdl) of serum and ...

Journal: :journal of research in medical sciences 0
nader - rahnama associate professor ali younesian assistant professor, department of physical education and sport sciences, shahrood university of technology, shahrood, iran morteza mohammadion assistant professor, department of physical education and sport sciences, shahrood university of technology, shahrood, iran effat bambaeichi assistant professor, faculty of physical education and sport sciences, university of isfahan, isfahan, iran

background: the association between the lipid profiles level and the incidence and severity of coronary heart disease (chd) is very pronounced in epidemiological studies, and an inverse relation between physical fitness and the incidence of coronary heart disease has been observed in many studies. the aim of this study was to investigate the impact of a soccer match on lipid parameters of profe...

Journal: :journal of fasting and health 0
abolfazl khoshdel associate professor, biochemistry research center, shahrekord university of medical sciences, shahrekord, iran. soleiman kheiri associate professor, biochemistry research center, shahrekord university of medical sciences, shahrekord, iran jafar nasiri assistant professor, department of internal medicine, shahrekord university of medical sciences, shahrekord, iran ebrahim saedi ph.d student, department of parasitology and mycology, kerman university of medical sciences, kerman, iran mahmoud mobasheri associate professor, department of epidemiology and biostatistics, shahrekord university of medical sciences, shahrekord, iran

introduction: abnormal lipid profile causes maternal mortality and impairs fetal development. this study investigated the effect of ramadan fasting on plasma lipid profile in pregnant women. material and methods: this self-control, cohort study was performed in healthy volunteer fasted pregnant women. serum cholesterol, triglyceride (tg), low density lipoprotein (ldl), high density lipoprotein ...

H.R Azimzadeh, S* Shojaee Barjoee, S.Z Hosseini Sangchi,

Background & objectives: Work-related illnesses account for a large number of social problems. According to occupational therapists, occupational diseases are considered as life-threatening factors for workers. The aim of this study was to measure air pollution to suspended particles and to assess the health risk of PM2.5 and PM10 exposure in the textile industry. Methods: This analytical-cros...

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