نتایج جستجو برای: at national and international levels
تعداد نتایج: 17264335 فیلتر نتایج به سال:
abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
purpose the objective of this study was to compare the iranian taekwondo-in statistically in terms of total injury rates to international counterparts as gleaned from the extant literature. methods the iranian sample consisted of 204 male taekwondo-in participating in the national championship. the international sample included the participants in national and international tournaments. validat...
previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...
Background. Considering the position and importance of sports federations in Iran and their very important duties and dependence on the Ministry of Sports and Youth in terms of financial resources, they must be responsive to their performance in providing services and implementing their programs. The duties are namely the development and promotion of sports at the public and championship levels...
background: an obvious gradient in health outcomes has been implicated in many evidences relating to social and economic factors. proper data are requested to convince policy-makers calling for intersectoral action for health. recently, i.r. of iran has come up with 52 health equity indicators to monitor health equity through the country. conducting regular surveys on 14 out of 52 national heal...
Many studies have been conducted on the Kurds and their movements. Most authors have considered historical dimensions or applied limited theoretical variables, but have not been able to identify the variables to identify the key reasons behind the rise and fall of Kurdish movements in an explanatory theoretical model. Consequently, there is neither available data about their rise, continuity, a...
abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...
Health Impact Assessment (HIA) is a relatively young field of endeavour, and hence, future progress will depend on the planning, implementation and rigorous evaluation of additional HIAs of projects, programmes and policies the world over. In the June 2014 issue of the International Journal of Health Policy and Management, Fakhri and colleagues investigated underlying principles of HIA through ...
this work presents a simulation approach to the design and economic evaluation of fuel oil hydrotreating processes for control of so2 and nox emission in an iranian steam power plant. minimum amount of required fuel oil desulphurization was calculated from the limit of so2 emissions of power plants in two different scenarios based on (i) european and (ii) iranian so2 emission standards. based o...
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