نتایج جستجو برای: soil sterilization
تعداد نتایج: 189251 فیلتر نتایج به سال:
The effects of high-temperature sterilization methods (boiling, dry-heating, autoclaving and chemiclaving) on the properties of four types of stone cast were determined. SEM observations were made of the cast surface before and after sterilization. High-temperature sterilization affected the properties of the stone casts. Boiling, dry-heating and autoclaving were considered to be unacceptable m...
INTRODUCTION Structurally intact, cancellous bone is an attractive grafting material because it can allow a greater degree of ingrowth by host tissues than cortical bone and may also be used as structural support for other biomaterials used to deliver osteogenic agents. Gamma radiation sterilization is a commonly used technique for reducing the risk of disease transmission with allograft, but i...
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 regio...
OBJECTIVE To investigate the effects of different sterilization/disinfection methods on the mechanical properties of orthodontic elastomeric chains. METHODS Segments of elastomeric chains with 5 links each were sent for sterilization by cobalt 60 (Co60) (20 KGy) gamma ray technology. After the procedure, the elastomeric chains were contaminated with clinical samples of Streptococcus mutans. S...
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