نتایج جستجو برای: radio protector
تعداد نتایج: 102643 فیلتر نتایج به سال:
Abstract: This paper aims to establish the account planner’s role and contribution in the creation of effective communication strategies for advertisers. Account Planning was born in 1968 in two advertising agencies in London, within the media and marketing context of that period. In the present circumstances, characterized by consumers’ protagonism and the need of an integrated communication, ...
I show that a cosmological baryon asymmetry generated at the GUT scale is in general safe against washout due to sphalerons and generic Bor L-violating effects. This result is mainly due to the (almost) conserved number of right-handed electrons at high temperatures T > ∼ O(10) TeV, but also the mass corrections, in particular the thermal masses of leptons act as the protector of the primordial...
OBJECTIVES Although hearing protectors must be used as a temporary solution, their choice should take into account several aspects, such as ergonomic features, associated with this device. The present study aims to analyse the relationship between the acoustical attenuation efficiency and other aspects related to the comfort afforded by hearing protectors and, consequently, their acceptability ...
PURPOSE To evaluate the radiation risk to the operator and the patient during endovascular surgery of the head and neck. METHODS The dose was measured using thermoluminescence dosimeters attached at the body surface of the operator and the patient during 15 endovascular surgeries (3 for arteriovenous malformation, 8 for dural arteriovenous fistulas, and 4 for other disorders of the head and n...
Based on a positive personal experience, the authors advocate the use of a wound protector/retractor such as the Alexis system in total hip arthroplasty, to avoid intra-operative bacterial contamination from the skin, while avoiding damage to the skin and other soft tissues.
background and objectives: there are different types of vascular access. we compared the patency rate for six months in ulnar-basilic fistula and radio-cephalic fistula for vascular access in hemodialysis patients. methods: the study was performed on 60 patients of 50.6±13.5 years of age with end-stage renal failure undergoing hemodialysis from 2012-2014 in imam ali hospital in zahedan. patie...
To ensure accurate chromosome segregation, cohesion between sister chromatids must be released in a controlled manner during mitosis. A new study reveals how distinct centromere populations of the cohesin protector Sgo1 are regulated by microtubule attachments, cyclin-dependent kinases, and the kinetochore kinase Bub1.
CONTEXT Several randomized controlled trials have been performed to examine the effectiveness of external hip protectors in reducing the incidence of hip fractures, but the results are controversial. OBJECTIVE To examine the effectiveness of hip protectors in reducing the incidence of hip fractures in an elderly high-risk population. DESIGN, SETTING, AND PARTICIPANTS Randomized controlled t...
in this paper, a new propagation model based on utd for multiple diffraction paths in cellular mobile radio communications in urban environments is proposed. moreover, the most rigorous novel utd-based expressions for multiple diffractions by buildings and excess path losses are d - rived and analyzed. for this purpose, building rows are supposed to have rectangular cross-sections with the same...
Background: Ionizing radiation induces the production of reactive oxygen species (ROS), which play an important causative role in cell death. The aim of this study was to investigate the protective effects of sulfated derivatives of neutral polysaccharides extracted from Auricularia auricular (SNAAP). Materials and Methods: Whole blood samples from healthy donors treated with SNAAP at differen...
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