normal 0 false false false en-us x-none ar-sa radiation therapies are commonly used for malignant or metastatic brain tumors for curative and palliative use. the radiation-induced neurotoxicity includes both parenchymal and vascular damage. here we report the case of a 43-year-old woman who developed multiple sclerosis (ms) 9 months after she underwent the last session of radiotherapy for the d...

conclusions the state of observed radiation protection principles was relatively in the weak level in the studied radiology departments especially in facilities such as ventilation system, radiography entrance, and darkroom situation. more important reason was usage changing of sections as radiology billet from related organizations. results the mean of radiation protection in the studied radio...

It has been suggested in the past that an AeffectiveB cloud fraction can be used to take into account cloud geometry effects in solar radiation parameterizations. All such models have been based on the reflected flux from non-plane-parallel cloud fields. In this study, it is shown that the Ž . AeffectiveB cloud fraction based on absorption or transmission could differ considerably from that bas...

Many observers have reported observations of green light emanating from severe thunderstorms in the midwestern United States. Spectral measurements have demonstrated that the dominant wavelength of the light is in the green portion of the visible spectrum and that this is not just a subjective impression. According to the theory proposed by Bohren and Fraser [Bull. Am. Meteorol. Soc. 74, 2185 (...

Our aim is to provide an observational reference for the evaluation of the surface and boundary layer parameterizations used in large-scale models using the remarkable long-term Canadian Prairie hourly dataset. First we use shortwave and longwave data from the Baseline Surface Radiation Network (BSRN) station at Bratt’s Lake, Saskatchewan, and clear sky radiative fluxes from ERA-Interim, to sho...

introduction:   palmoplantar psoriasis could hardly be differentiated from chronic tylotic eczema both clinically and histologically. the most commonly used therapeutic options for palmoplantar psoriasis are long-term therapy with topical corticosteroids and local puva. frequently, it is a recalcitrant disease. we investigated the efficacy and tolerability of the combination of topical calcipot...

Tropospheric aerosols are important components of the earth–atmosphere–ocean system, affecting climate through three primary mechanisms. First, direct radiative forcing results when radiation is scattered or absorbed by the aerosol itself. Scattering of shortwave radiation enhances the radiation reflected back to space, therefore increasing the reflectance (albedo) of the earth and cooling the ...

the hematopoietic syndrome is anticipated when a dose of radiation greater than 100 cgy is received. the resulting clinical situation is life-threatening because of opportunistic infections and gradual decline in immune competency due to irradiation. because of evidence of a possible immunomodulatory role for cimetidine, an antagonist of histamine h2 receptors, we studied the effects of this dr...

conclusions portable radiological examinations did not expose healthcare providers to high doses of ionizing radiation. nurses’ radiation protection knowledge was limited and hence, they require in-service education programs. results the mean of participants’ radiation protection knowledge was 4.77 ± 1.38. the most prevalent radiation protection behavior of nurses was leaving the intensive care...

background: recently, there have been many studies on the harmful effects of radiation and the regulations on radiation safety have been toughened both at the in nation and abroad. this study aims to identify the perceptions and actions taken as to radiation safety, and the degree of knowledge related to radiation held by the radiologists working in large hospitals. materials and methods: the r...