نتایج جستجو برای: activated disinfection
تعداد نتایج: 229717 فیلتر نتایج به سال:
Human adenoviruses (HAdV) are important pathogens in both industrialized and developing nations. HAdV has been shown to be relatively resistant to monochromatic UVC light. Polychromatic UVC light, in contrast, is a more effective means of disinfection, presumably due to the involvement of viral proteins in the inactivation mechanism. Solar disinfection of HAdV, finally, is only poorly understoo...
The aim of this study was to evaluate the knowledge and behavior of dentists regarding toothbrush disinfection. This study included 147 dentists (88 women and 59 men) who were actively employed at a dental school in Ankara, Turkey. Participants were asked to fill out a standard questionnaire, which contained questions regarding their demographics, brushing habits, toothbrush storage and disinfe...
OBJECTIVE The aim of this study was to evaluate the effect of repeated microwave disinfections on the dimensional stability of acrylic dentures. MATERIALS AND METHODS Three groups of dentures made of a heat polymerized acrylic resin were tested. I: dentures kept in water (control group). II: dentures microwaved daily while being immersed into water (wet disinfection). III: dentures microwaved...
AIM This study aims to determine the role of mixing techniques of polyether impression materials and efficacy of disinfection on microbial colonization of these impression materials. MATERIALS AND METHODS Polyether impression material was mixed using two methods: First by hand mixing (group I) and second using an automixer (group II) with a total of 100 samples. Four microbial strains were st...
PURPOSE The aim of this study was to evaluate the effect of paracetic acid (PAA) and ozone disinfection on the tensile bond strength (TBS) of silicone-based resilient liners to acrylic resins. MATERIALS AND METHODS One hundred and twenty dumbbell shaped heat-polymerized acrylic resins were prepared. From the mid segment of the specimens, 3 mm of acrylic were grinded off and separated parts we...
The photocatalytic disinfection of Escherichia coli K-12 is investigated by the natural sphalerite (NS) under different spectra, wavelengths and intensities of visible light (VL) emitted by light-emitting-diode lamp (LED). The spectrum effect of VL on disinfection efficiency is studied by using white LED, fluorescent tube (FT) and xenon lamp (XE), which indicates that the "discreted peak spectr...
Disinfection is the most essential and final treatment given to drinking water to render the water free from harmful pathogens. The most conventional and common form of disinfection involves the use of strong oxidants that have the potential to produce undesirable disinfection by-products (DBP). Therefore, many researchers have been trying to find alternative disinfection methods to reduce the ...
PURPOSE To elucidate Japanese trends for perioperative disinfection and antibiotic selection during cataract surgeries. METHODS Perioperative iodine use and antibiotic prophylaxis for cataract surgery were surveyed in eight regions in Japan by mail or through interviews from February 1 to March 1, 2014. RESULTS We surveyed 572 surgeons, of whom 386 (67%) responded. Most of the surgeons (94%...
Background and Objectives: The aim of this study is the evaluation of bacterial contamination of Slit-lamps in Eye Centers of Farshchian Hospital and assessment of the current disinfectants on isolated bacteria from apparatuses. Methods: In a cross-sectional study, 400 samples were collected from different parts of Slit-lamps (200 samples before and 200 samples after disinfection). The samp...
he proposed Disinfectants/Disinfection By-products (D/DBP) Rule and the Enhanced Surface Water Treatment Rule (ESWTR) have prompted an industrywide evaluation of disinfection and treatment practices.1,2 One of the least expensive methods of limiting DBP formation is to use monochloramine instead of free chlorine to maintain a distribution system residual. Monochloramine limits free chlorine con...
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