نتایج جستجو برای: surmeh structure
تعداد نتایج: 1567888 فیلتر نتایج به سال:
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abstractthe purpose of this study was to assess organizational and personnel structure in iranian agriculture extension system (iaes). the research instrument was a structural questionnaire including close-ended questions which its validity and reliability was confirmed by using expert panel and cranach’s alpha test, respectively. the statistical population of this research included all public ...
reliability of a system is the probability that it will function as intended for the required period of time. the opposite of reliability is failure probability per unit time or over time, such as a life cycle. following a review of existing reliability codes and approaches, comprehensive approaches to assess the reliability of offshore structures are described, including probabilistic analysis...
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در این کار تحقیقاتی دو لیگاند باز شیف متقارن چهار دندانه n وn´- بیس (دی هیدروکسی استوفنون)پارافنیلن دی آمین (1l) و n وn´- بیس (دی هیدروکسی استوفنون)اتیلن دی آمین (2l)، به ترتیب از واکنش تراکمی پارا فنیلن دی آمین و اتیلن دی آمین با دی هیدروکسی استوفنون تهیه شدند. ساختار لیگاند 1l که لیگاند جدیدی می باشد، با طیف سنجی های زیر قرمز و 1hnmr مورد شناسایی قرار گرفت. سپس با استفاده از لیگاندهای 1l ، 2l...
case reports are considered as the lowest level of evidence while at the same time they are frontiers of evidence collection. case reports are professional stories about novel medical events and will worth publication only if they possess complexity, proper data collection, justified diagnosis, and legitimate intervention as well as appropriate language, punctuation, and syntax. a case report m...
first principle calculations were performed using density functional theory within the local spin density approximation (lsda) to understand the electronic properties of au(100)+tbt system and compare the results with au(100) and bulk au properties. band structure, the total dos and charge density for these materials are calculated. we found that the homo for au(100)+tbt becomes broader than au...
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