نتایج جستجو برای: and micro
تعداد نتایج: 16850358 فیلتر نتایج به سال:
background: this study consists of two parts. the first part deals with both qualitative and quantitative analysis of 226ra using alpha spectrometry measurement method. in the second part, the percentage of radioactive equilibrium between 226 ra and its daughter products were determined by alpha spectrometry and total alpha measurement system after elapsed time of 15 days from precipitation. ma...
this article seeks to identify and classify the micro factors affecting the implementation of poverty reduction policy in iran. the existence and spread of poverty in society, in spite of the existent policy programs is the sign of some weaknesses in the executive models of policy. policy making in the field of poverty reduction theoretically is classified into several categories different fact...
Failure to identify the right institutionalization framework has caused derailments of major public sector Digitally-Enabled Service Transformation (DEST) projects in the UK, such as the NHS-National Program for IT (NHS-NPfIT) and BBC Digital Media Initiatives (BBC-DMI). Although such cases have generated much debate among the research community, majority of the discussions have been dominated ...
In this paper, first we describe rushes summarization system which is made this year for the TRECVID2008 BBC rushes task. Our aim this year is to build up base system using minimum information and to see how it works. In the second we will describe about our High-level feature extraction system briefly.
abstract:the general perception of islamic finance is that it prohibits the practice of paying and receiving interest, but islamicfinance is much broader than interest rate prohibition. islamic financial services can be viewed as a set of financialservices which are diversified based on the needs of society.since in the iranian economy most of the enterprises are micro and/or small, micro finan...
a micro-channel heat exchanger reactor with different micro-baffle shapes has been studied numerically. governing equations were solved base on the finite volume method with fluent software. in upper section, oxidation reaction of methanol was occurred and in lower section, steam reforming of methanol was done. two sections were separated with solid part which played as heat exchanger and trans...
background and aims. effect of surface treatments on repair bond strength of aged composite resins might be different due to their dissimilar fillers. the aim was to evaluate the effect of different surface treatments on repair micro-shear bond strength (µsbs) of silica- (spectrum tph) and zirconia-filled (filtek z250) composite resins. materials and methods. twenty-seven composite resin blocks...
جنس euphrasia l. از گیاهان نیمه انگل و متعلق به تیره scrophulariaceae می باشد که پراکنش جهانی دارد و اغلب در مناطق معتدل دو نیمکره شمالی و جنوبی پراکنده اند. این سرده در ایران دارای 6 گونه ,e. juzepczukii ,e. petiolaris e. salisburgensis ,e. sevanensis ,e. hirtella ,e. pectinata می باشد که عمدتا در شمال کشور پراکندگی دارند. مطالعه حاضر به منظور تمایز این گونه ها با استفاده از صفات ریخت شناسی، ت...
in this research, the influence of adding micro- and nano- sized calcium carbonate powders to nylon-66 was investigated. mechanical properties of micro and nano- composites, including tensile strength, elongation, and young’s modulus, before and after ageing, were determined and analyzed. for this purpose, micro- and nano-sized caco3 particles were used as fillers to prepare micro-composites (c...
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