نتایج جستجو برای: soil sterilization
تعداد نتایج: 189251 فیلتر نتایج به سال:
During the course of an investigation of cotton for use as air filters on the needles of bleeding units, a heat-resistant, spore-forming organism was isolated. Because of its unusual degree of heat resistance, the organism appeared to be more suitable as a control of the efficiency of sterilization than species of Clostridium usually employed for this purpose. Experiments were undertaken to det...
Introduction: Dental turbine chamber is a suitable reservoir for living microorganisms, so chamber sterilization is necessary for reducing cross contamination risk. On the other hand, in non-vacuum autoclaves, steam penetration into turbine chamber is doubtful, while they are still in use in dental clinics. In this study, performance of small non-vacuum autoclave in turbine chamber sterilizatio...
Background: Every year millions of dollars are expended to equip and maintain the hospital sterilization centers, and our country is not an exception of this matter. According to this, it is important to use more effective technologies and methods in health system in order to reach more effectiveness and saving in costs. This study was conducted with the aim of evaluating the technology of regi...
objective: despite development of new contraceptive methods, sterilization remained the most widely used method. our objective was to determine the factors contributing to decision making for tubal ligation in females. materials and methods: a cross sectional study was conducted in jinnah post graduate medical centre (jpmc) between march - november 2008. about 505 females using contraceptive me...
Optical fibers with different types of polymer coatings were exposed to three sterilization conditions: multiple autoclaving, treatment with ethylene oxide and treatment with gamma rays. Effects of different sterilization techniques on key optical and mechanical properties of the fibers are reported. The primary attention is given to behavior of the coatings in harsh sterilization environments....
Background One of the most important unit operations in upstream animal cell bioprocesses at scales over 100 L is the preparation and sterilization of the medium. This complex, sensitive, and expensive process requires a considerable investment in both material and time [1]. Traditionally, large-scale medium sterilization is performed with costly single-use dead-end filters. To optimize and red...
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