نتایج جستجو برای: direct exposure test
تعداد نتایج: 1473527 فیلتر نتایج به سال:
This study was conducted on concrete using sewage sludge ash (SSA) with the aim to establish an efficient use of SSA as a cement replacement material. Concrete specimens three degrees strength were made from two different SSAs and exposed in temperate plain cold mountain regions for prolonged period time investigate long-term properties concrete. After 17 years exposure, examined. basically mai...
introduction quality control (qc) techniques are used in monitoring and maintenance of the components of an x-ray system. qc of radiology devices plays a significant role in reduction of medication dose and optimization of image quality. this study aimed to conduct qc tests on randomly selected radiology devices, installed in diagnostic imaging departments of iran. materials and methods in tota...
BACKGROUND The relationship between pet ownership and the risk of developing allergic sensitization to pet allergens is still controversial. We assessed the possible effect of direct exposure to dog allergen on skin reactivity in dog-sensitized patients. METHODS We studied, in a case-control trial, 116 adults sensitized to dog allergens (55 with a dog at home for at least 10 years and 61 with...
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