نتایج جستجو برای: reference standards
تعداد نتایج: 370182 فیلتر نتایج به سال:
normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 introduction: according to role of patient and family education in the process of patient care, joint commission on accreditation of healthcare organizations (jcaho) has considered the patient and family education standards in the hospital accreditation program; on the otherwise conducted researches show that the iran mini...
after four years of publishing the iranian national laboratory standard and following a strategic plan to implement its requirements, it was decided to review the taken actions, evaluating the achievements and the failures, as well as analyzing the gaps and planning the interventional activities to resolve the problems. a thorough evaluation revealed that the progress of implementation process ...
introduction: academic libraries are famous to be the hearts of universities, with the ever increasing importance of the evaluation of information technologies in academic centers, and libraries need to evaluate their status to accord with these conditions. the aim of this research is to provide an evaluation relating to the conditions of tabriz university of medical science libraries, and coll...
background multiple choice questions (mcqs) are one of the most common types of exams used in evaluation of students in any educational setting. the question items making up these exams need to be examined if they are to meaningfully contribute to the student scores. such characteristics are amenable to examination by item analysis. objectives the purpose of this research was to examine the qua...
nowadays, standard seems to be very important and necessary in all aspects of the life including reference services in libraries. this article is to survey the role of standards in electronic reference services and also considers some sample application instructions which are presented in the dupont- university. by the end, the guide for digital reference services which is called ifla is presen...
background: dna isolation procedure can significantly influence the quantification of dna by real time pcr specially when cell free dna (cfdna) is the subject. to assess the extraction efficiency, linearity of the extraction yield, presence of co-purified inhibitors and to avoid problems with fragment size relevant to cfdna, development of appropriate external dna control (edc) is challenging. ...
abstract background assuring safety and survival of blood in vitro depends on anti-coagulation substances, blood bag characteristics, storage conditions, and transport of blood. besides, careful selection and screening of donors as well as blood tests can minimize the transmission risk of blood-transmissible pathogens and optimize blood health. the aim of this study was to assay the level of kn...
A large pool of refined endotoxin was prepared from Escherichia coli O113 by extraction with hot acqueous phenol. It was characterized chemically and biologically and will be available for a reference standard designated as reference endotoxin EC.
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