نتایج جستجو برای: x ray protection

تعداد نتایج: 838645  

2012
Suning Li Qian Wang Tao Chen Zhihua Zhou Ying Wang Jiajun Fu

Many methods have been reported on improving the photogenerated cathodic protection of nano-TiO2 coatings for metals. In this work, nano-TiO2 coatings doped with cerium nitrate have been developed by sol-gel method for corrosion protection of 316 L stainless steel. Surface morphology, structure, and properties of the prepared coatings were investigated by X-ray diffraction, X-ray photoelectron ...

Journal: :medical journal of islamic republic of iran 0
mohammad reza motamed department of neurology, firoozgar hospital, iran university of medical sciences; tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) seyed-mohammad fereshtehnejad division of clinical geriatrics, department of neurobiology, care sciences, and society (nvs), karolinskainstitutet, stockholm, sweden &firoozgar clinical research development center (fcrdc), firoozgar hospital, iran university of medical sciences; teسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: karolinskainstitutet, stockholm, sweden &firoozgar clinical research development center (fcrdc), maryam abbasi medical students research committee, shahed university of medical sciences; tehran, iran.سازمان اصلی تایید شده: دانشگاه شاهد (shahed university) mastaneh sanei department of radiology, iran university of medical sciences; tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) mina abbaslou department of neurology, firoozgar hospital, iran university of medical sciences; tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) somayeh meysami department of neurology, firoozgar hospital, iran university of medical sciences; tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)

background: the sporadic cases of radiation-activated multiple sclerosis (ms) has been previously described, with a few studies focused on the relationship between radiation and the risk of ms. the aim of our study was to evaluate the association between history of x-ray radiation and ms.   methods : this case-control study was conducted on 150 individuals including 65 ms patients and 85 age- a...

2017
R. Oldman

Direct industrial application of x-ray absorption spectroscopy is demonstrated by research in catalysis (CO/H2 and naphtha reforming) and corrosion protection.

Journal: :The Journal of the Society of Chemical Industry, Japan 1961

2015

Background: Evidence suggests that children are more susceptible to radiation risks or hazards. In particular, their gonads are more sensitive to the effects of radiation, especially at or below reproductive age. Protecting the gonads of children and adults is of particular importance to the imaging. Aim: To investigate level of the use of gonad protection during paediatric abdomen and pelvic X...

1999
S. A. Grachev

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IntroductionA fine balance of image quality and radiation dose can be achieved by optimization to minimize stochastic and deterministic effects. This study aimed in ensuring that images of acceptable quality for common radiographic examinations in digital imaging were produced without causing harmful effects. Materials and MethodsThe study was conducted in three phases. The pre-optimization inv...

Background: Gonad shielding has been recommended during pelvic x-rays since the 1950s. The popular method of gonad shielding is placement a lead shield in the midline of the pelvis. The aim of this study was to evaluate the prevalence and utility of gonad shielding in pediatrics undergoing pelvic x-rays.Materials and MethodsFollowing study approval, we retrospectively retrieved data from the di...

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