abstract background: the combination of propofol-fentanyl for sedation during colonoscopy is characterized by the frequent incidence of side effects. etomidate-fentanyl provides fewer hemodynamic and respiratory complications. the aim of our study was to compare the safety and efficacy of propofol-fentanyl and etomidate-fentanyl for conscious sedation in elective colonoscopy. methods: this doub...

introduction:  laser  interstitial  thermotherapy  (litt)  is  an  internal  ablation  therapy  method  consisting of a percutaneous or intraoperative insertion of laser fibers directly into the liver tumor with  maximum diameter of 5 cm. in this treatment method, there isn’t any general information about the  relationship  between  increasing  the  exposure  power,  coagulation  and  carboniza...

this study reports on the findings of a genre teaching course for developing academic writing of a class of efl students in iran. the information report genre was taught in a cyclical way of teaching and learning, which was started from ‘setting the context’ and ‘deconstruction’ of prototype information report genre, and continued with ‘joint construction’, ‘independent construction’, and final...

optimization of process parameter is one of the ideal goals in laser sintering. the results of this process were measured as output parameters like: density, micro hardening, macro hardening, tension, roughness, stiffness, balling. in this paper, the influence of input parameter such as laser power, scan speed, material powder and etc are surveyed on output parameter like balling affection and ...

It is arguable that the instinct for survival in animal species has evolved due to the evolutionary elimination of those individuals who did not have enough inclination nor desire to cluster in a team. Thus, the roots of ethical conduct in its many facets in today’s world, may be sought in this very primeval concern for the society that enabled communities, rather than individuals, to survive i...

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...