نتایج جستجو برای: quality control

تعداد نتایج: 1979908  

Journal: :iranian journal of nuclear medicine 2003
amir reza jalilian pezhman rowshanfarzad mohsen kiyomarsi mahshid sabet mohammad mirzaie

according to the importance of positron emitters in nuclear medicine, 82mrb was produced as a member of this group of radiopharmaceuticals. after being converted into an injectable form, enough information was provided for imaging with this radiopharmaceutical. 82mrb with high radioisotopic purity and half-life of 6.5 hours, in chloride form, can be considered as a suitable positron emitter for...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1391

در این پژوهش، نخست برآوردگری برای نقطه تغییر پارامتر فرایند دو جمله ای3 که تغییر به صورت روند خطی می باشد، بر پایه تابع درستنمایی و برآورد جدیدی برای پارامتر شیب، ارائه شده است. پس از آن برآوردگر نقطه تغییر پله ای در پارامتر فرایند دو جمله ای بر پایه بهینه سازی تابع درستنمایی به کمک الگوریتم وراثتی ارائه شده است. عملکرد برآوردگرهای پیشنهادی با انجام مطالعات گسترده شبیه سازی مورد ارزیابی قرار گر...

Journal: :journal of optimization in industrial engineering 2010
ahmad ostadsharifmemar seyed taghi akhavan niaki

in this paper, first the available single charting methods, which have been proposed to detect simultaneous shifts in a single process mean and variance, are reviewed. then, by designing proper simulation studies these methods are evaluated in terms of in-control and out-ofcontrol average run length criteria (arl). the results of these simulation experiments show that the ewma and ewms methods ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1391

even though, to date, a lot of studies have been conducted on the subject of politeness theory, there are very few studies regarding the applicability of this theory to translation between english and persian which shows the reason behind conducting the present study. this study was carried out with the aim of highlighting whether there is any difference between english and persian methods of u...

Afshin Zarghi, MH Hoshdar Tehrani S Fathali

Nitrofurazone is one of the antibacterial nitrofuran agents used topically for skin infections. The drug is effective on the majority of infectious microorganisms. Because of the importance of this drug in clinic, in this study various methods of synthesis of nitrofurazone were examined and the most appropriate method, applicable to pharmaceutical industry was chosen and optimized from the poin...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract this study was carried out to compare disinfecting effects of nanosilver with other feed disinfectants on layer hen performance, immune system, gastrointestinal microflora and intestinal morphology. total of 90 layers (lsl) were divided into five groups consisting: 1-control, 2- formalin (200 ppm), 3- formaycin (200 ppm), 4- nanosilver in drinking water (7.5 ppm) and 5-nanosilver in f...

Journal: :poultry science journal 2013
pissol ad de oliveira d toniazzo g valduga e cansian rl

the objective of this study was to evaluate the efficiency of water pressure and concentration of dichloromethane after the evisceration system under the fecal decontamination of chicken carcasse  surfaces with and without apparent contamination. from a total of  322 carcasses, 50% were intentionally added chicken droppings in an area of more  than 2 cm2 and the rest of carcasses were kept with...

Journal: :iranian journal of medical physics 0
peyman hejazi medical physicist, department of pharmacology and medical physics, faculty of medicine, semnan university of medical sciences

introduction the main goal of this study was to perform quality control test on all radiography units operating in golestan province of iran. materials and methods forty-four x-ray units were examined based on general accepted programs for quality control. eight parameters including kvp accuracy, kvp reproducibility, ma-time reciprocity, exposure linearity, exposure reproducibility, timer accur...

Afshin Zarghi, MH Hoshdar Tehrani S Fathali

Nitrofurazone is one of the antibacterial nitrofuran agents used topically for skin infections. The drug is effective on the majority of infectious microorganisms. Because of the importance of this drug in clinic, in this study various methods of synthesis of nitrofurazone were examined and the most appropriate method, applicable to pharmaceutical industry was chosen and optimized from the poin...

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