power system overvoltages due to switching, lightning and other disturbances are the main problem for designers of the power transformers. once some frequencies of the incoming surges match with some of the natural frequencies of transformer winding, the resonance phenomenon is expected in transformer winding. the resonant overvoltages may destroy the insulation between turns and cause to insul...

the primary aim of this study is to determine maximum bite force in molar and incisor regions of healthy individuals, to evaluate the bite force after open reduction and internal fixation of mandibular fractures using micro plates, for a period of up to 6 weeks and to determine the rate of recovery of maximum bite force in an indian population.

introduction central vein catheterization (cvc) is an important procedure for emergency departments (ed). despite the existence of ultrasonography (us) devices in every ed, cvc was accomplished by anatomical landmarks in many eds in iran. objective this study was designed for the evaluation of us-guided cvcs, anatomical landmark cvcs, and the promotion of us-guided cvc in iran. methods and mate...

background:  multiple  sclerosis  (ms) patients permanently confronted  with serious challenges from treatment regimen. developing  a new  questionnaire in ms management, through  evaluation  of patients’ perspectives   and  knowledge   regarding   treatment  will help  to  identify the  sources  of tension, and  to  build  a therapeutic   alliance.   we   purposed   to   describe    ms patient...

this article is an attempt to survey the contraction and cancellation of the reuter’s agreement as a one-sided approach and from special perspective, by using minimalistic ideology and with emphasis on multi-sided and various reasons and factors effective in the process of this contract.  on the basis of this research, in this contraction, different factors came together and augmented one anoth...

background: accurate identification of sheep nematodes is a critical point in epidemiological studies and monitoring of drug resistance in flocks. however, due to a close morphological similarity between the eggs and larval stages of many of these nematodes,such identification is not a trivial task. there are a number of studies showing that molecular targets in ribosomal dna (internal transcri...

monthly and annual water and phosphorus mass budgets were set up over the year 2010 for thelake rio verde, brazil. limited data for the water budget was compensated using an interpolation methodwith data water budget data of a nearby reservoir. thus, errors of ca. 1.5% were estimated for the waterbudgets. dominant p mass input terms were inflows from the rivers and direct run off into the reser...

nowadays, with increasing service industries, service marketing and service quality have become an important challenge to organizations. the attempts of organizations in this situation are witnesses to this matter. in the past years, the organizations tried to reach service quality appropriation and satisfaction of self-external customers by concepts and approaches of external marketing. one of...

1024x768 normal 0 false false false en-us x-none ar-sa background and objective: numerical modeling of biological structures would be very helpful tool to analyze hundreds of human body phenomena and also diseases diagnosis. one physiologic phenomenon is blood circulatory system and heart hemodynamic performance that can be simulated by utilizing lumped method. in this study, we can predict hem...

introduction: this in vitro study investigates the marginal and internal fit of indirect class ii composite restorations. two different processes for chair-side restorations were compared. in group a, the restorations were fabricated using cad/cam technology (cerec, sirona, germany, bernsheim) and in group b they were made by hand (grandioso inlay system, voco gmbh, germany, cuxhaven). methods:...