voltage fluctuation is one of the important types of power quality aspects originated from heavy fluctuating loads. this phenomenon can influence the behavior of induction motors, produce excessive vibration and increase the ohmic losses. in this paper a simplified model to evaluate the electrical characteristics of three phase induction motors under voltage fluctuation conditions will be prese...

an explanatory survey was carried out in 2008 to investigate the relationship between entrepreneurial orientation (eo), environmental factors, human capital and organizational characteristics vs. entrepreneurial performance among entrepreneurial firms in iranian agricultural sector. data were obtained from a sample of 120 iranian agricultural establishments, using an interview-oriented question...

municipalities in developing countries spend the highest proportion of their annual budget on unsatisfactory solid waste management service. until recently, solid waste management services in ethiopia were mainly the responsibilities of municipalities, which culminated in inadequate service provision. thus, the integration of micro and small enterprises (mses) by the government has recently bei...

in this paper, a numerical solution procedure is presented for the forced vibration of a piezoelectric nanowire under thermo-electro-mechanical loads based on the nonlocal elasticity theory within the framework of timoshenko beam theory. using hamilton’s principle, the nonlocal governing differential equations are derived. the governing equations and the related boundary conditions are discreti...

desmoplastic small round cell tumor (dscrt) is a rare variant of sarcoma with a highly aggressive behavior. it usually affects abdominal cavity and has a male predominance. its correct diagnosis and treatment is sophisticated and requires an experienced multidisciplinary team. hereby we present a 25 yrold man from kerman province in 2013 with abdominal mass and ascites who underwent sonograghy ...

  Background and aims: <span style="color: #221e1f; font-family: Optima LT St...

  Background and aims: <span style="color: #221e1f; font-family: Optima LT St...

dear editor, abdominal aortic aneurysm is often asymptomatic, less recognized, and causes considerable mortality and morbidity, if missed. the incidence varies from country to country and the occurrence is influenced by modifiable (smoking, coronary heart disease, hypertension, dyslipidemia, and prolonged steroid therapy) and non-modifiable risk factors (increasing age, male gender, and positiv...

abstract this papare is resaults of analysing the data which reported from a harvesting project. the site for collecting data is buildings' roofs of azad islamic university of mashhad. a rain gauge and a small reservoir (capacity is 4 cubic meters) were set at this site. then the amount of precipitation and its runoff were measured during two years (from 1386, dey, 23 to 1388, tir, 3).the sampl...

background and purpose: small group teaching(sgt) in is a known method for developing intellectual skills, changing attitudes and encouraging the taking of responsibilities for learning. this study was an attempt to compare students’ attitudes and knowledge scores on sgt and lecture -based teaching (lbt). methods: 22 first year medical students were enrolled in a course using two methods (lectu...