BACKGROUND Repeated sterilizations cycles cause undesirable alterations in the material properties of the instruments, such as corrosion, alterations in the hardness of the metal and the loss of the cutting sharpness of the instrument. This research examined the effect of repeated dry heat sterilization and autoclaves cycles on carbon steel (CS) and stainless steel (SS) curettes during the scal...

AIM To evaluate the effects of repeated autoclaving on torsional strength of two nickel-titanium (NiTi) rotary endodontic files: Twisted Files (SybronEndo, Orange, CA, USA) and GT Series X files (Dentsply Tulsa Dental Specialties, Tulsa, OK, USA). METHODOLOGY Four groups of 20 GT Series X (size 20, .06 taper) and four groups of 20 Twisted Files (size 25, .06 taper) were subjected to 0, 1, 3 o...

the laryngeal mask airway (lma) is an important addition to the anesthetist's equipments. however, its usage may involve some complications. we have encountered an unusual and potentially serious complication using this equipment. a 45-year old man underwent cataract surgery under general anesthesia. after the induction of anesthesia, a size 4 of the reusable classic lma was inserted without an...

One of the major problems confronting healthcare professionals is the control of pathogenic organisms. This is because microorganisms are present in our environment and may contaminate healthcare instruments from time to time. An autoclave was designed and constructed to sterilize materials/items used in such healthcare institutions. The autoclave has a liquid capacity of 2 litres and is heated...

Micropropagation of banana (Musa paradisiaca Linn.) var Grand naine was carried out with media sterilized by microwave radiation. Microwave oven was effectively used to sterilize the media for in vitro shoot-multiplication of banana against autoclave. Sterilization of media in microwave oven was successfully achieved at 900W/200 ml media (4 min). In vitro shoot-multiplication was higher in the ...

Introduction: Health-care waste can threaten the health of humans and environment due to dangerous, toxic and pathogenic agents. This study was conducted to investigate the status of disinfection equipment in Tehran hospitals as well as their health and economic evaluation in 2016. Materials and Methods: In this research, 27 hospitals in Tehran that equipped with disinfection equipment were se...

in this study the effects of autoclave, microwave and ultrasonic pretreatments with or withoutacid addition were investigated on the amount of glucose, soluble and insoluble lignin, furfural, yeast viabilityand bioethanol. the findings showed that autoclave-acid impregnated sample, has the highest glucose releasefrom lignocellulose materials (14.61 and 14.95 g/l for solvent exposed and untreate...

In this study the effects of autoclave, microwave and ultrasonic pretreatments with or withoutacid addition were investigated on the amount of glucose, soluble and insoluble lignin, furfural, yeast viabilityand bioethanol. The findings showed that autoclave-acid impregnated sample, has the highest glucose releasefrom lignocellulose materials (14.61 and 14.95 g/l for solvent exposed and untreate...