background: heat stress is one of the agents in the work environment that can create numerous problems for workers. the objective of this research is to study heat stress control in the foundry platform of a steel plant in tehran. methods: in this experimental study, controlling plans were demonstrated for the work conditions improvement in one of steel plant's foundry platforms. for controllin...

Background: The use and effectiveness of traditional lead gonad shields in pediatric pelvic radiography has been challenged by several literatures over the past two decades. The aim of this study was to develop a new radioprotective gonad shields to be use in pediatric pelvic radiography. Materials and Methods: The commercially available 0.06 mm lead equivalent bismuth garment has cropped squar...

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...

Introduction: Recently, the use of nanoparticles has increased for many purpose in medicine. One of these is using the nano particles in shields structure to protect sensitive organs such as breast which placed inside the field of chest CT scan and receives high dose. The aim of this study was the use of nano Bi2O3 to making shield for protection breast in chest CT examination ...

Abstract Gamma-ray imaging is a technique for visualizing the spatial distribution of radioactive materials. has recently been applied to research on environmental restoration and decommissioning Fukushima Daiichi Nuclear Power Station (FDNPS). In this paper, we present an elemental technology study gamma-ray imager using small-angle scattering (GISAS), which intended application at FDNPS site....

ion and Integration For the Nominal Modeling Case in the TSPA analysis, DOE implemented the model abstractionfor general corrosion of the drip shield in the Waste Package and Drip Shield DegradationSubmodel, as described in SNL (2008ag, Section 6.3.5.1), in which the drip shields weredistributed in the five percolation subregions. The Waste Package and Drip Shield DegradationSub...

background: radiation shielding properties is an important for a material wish can be used the photon attenuation coefficients of clay produced using different rate of boron have been measured for the purpose of radioactive waste disposal. materials and methods: the measurement has been performed using gamma spectrometer contains nai (tl) detector at the photon energies of 662, 1173 and 1332 ke...

A compensation method is proposed by which the uniformly shielded area of the axial magnetic field in a relatively short, open-structure axial magnetic shield can be extended. An open-ended cylindrical magnetic shield of 120 cm in length, 52 cm inner diameter, and a ;0.5 mm total thickness of the shielding material is used to demonstrate the idea. The shield axis is oriented along the horizonta...