Relevant bibliographies by topics / Heat as a disinfectant

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  2. Dissertations / Theses
  3. Books
  4. Book chapters
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Academic literature on the topic 'Heat as a disinfectant'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Heat as a disinfectant"

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Kiskó, G., N. Hladicekova, A. Taczmann-Brückner, and Cs Mohácsi-Farkas. "Studies on the heat and disinfectant resistance of a spore-forming spoilage bacterium." Acta Universitatis Sapientiae, Alimentaria 12, no. 1 (2019): 94–103. http://dx.doi.org/10.2478/ausal-2019-0007.

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Abstract Heat resistant thermophilic spore-forming bacteria, such as Aeribacillus (A.) pallidus, may contaminate the surfaces in food facilities resulting food spoilage of the products. The aim of this work was to determine the heat and disinfectant resistance of an A. pallidus strain that was isolated from a canning factory environment. Compared to other heat-resistant spore-forming bacteria, it did not prove to be very resistant to heat with a D10-values of A. pallidus from 12.2 min to 2.4 min (at 102 °C and at 110 °C), with a calculated z-value of 11.6 °C. Not only spores but vegetative cells showed resistance against all investigated disinfectants.
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LIN, MENG-HSUAN, MING-LUN CHIANG, CHORNG-LIANG PAN, and CHENG-CHUN CHOU. "Heat Shock and Cold Shock Treatments Affect the Survival of Listeria monocytogenes and Salmonella Typhimurium Exposed to Disinfectants." Journal of Food Protection 75, no. 4 (2012): 695–700. http://dx.doi.org/10.4315/0362-028x.jfp-11-419.

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The foodborne pathogens Listeria monocytogenes and Salmonella Typhimurium were subjected to heat shock at 48°C for 10 and 30 min, respectively, and then cold shocked at 15°C for 3 h. The effect of these shocks on the viability of test organisms exposed to chlorine dioxide and quaternary ammonium compounds was then determined. After exposure to the disinfectants, the viable population of each test organism, regardless of heat shock or cold shock treatment, decreased as the exposure period was extended. Both heat shock and cold shock treatments reduced the susceptibility of L. monocytogenes to both disinfectants at 25°C. However, for Salmonella Typhimurium, exposure to the chlorine dioxide disinfectant or quaternary ammonium compounds at 25°C significantly reduced (P < 0.05) survival of heat-shocked cells but significantly increased (P < 0.05) survival of cold-shocked cells compared with control cells. Survival of both L. monocytogenes and Salmonella Typhimurium generally was reduced after exposure to disinfectants at 40°C compared with 25°C.
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Li, Zhan Guo, Ying Li, Zhi Nong Liu, Guo Rong Li, and An Na Zhu. "Sterilization of Clothes Infected by Bacteria Using Chlorine-Containing Disinfectant Coupled with Heat Effect." Advanced Materials Research 554-556 (July 2012): 1656–59. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.1656.

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Bacterial samples were prepared taking cloth strip as carriers infected by bacillus subtilis var. niger spores. Bacterial carriers were disinfected by spraying chlorine-containing disinfectant coupled with heat effect. Orthogonal experiments were carried out taking available chlorine concentration, spraying quantity of disinfectant, temperature and sterilizing time as influencing factors. The results showed that spraying quantity 0.12 g/cm2of disinfectant containing 5000 mg/L available chlorine, bacillus subtilis var. niger spores on the carrier with 1×106cfu per sample could be killed completely (100%) in 60°C thermostat for 15 min. At the same time, contrastive experiments indicated that there were still 1100 cfu of residual bacteria on the carrier which had been sprayed disinfectant containing 5000 mg/L available chlorine and put into 25°C (room temperature) thermostat for 30 min. While no killing efficiency was observed when putting bacterial carrier into 60°C thermostat for 30 min, if taking standard hard water instead of disinfectant.
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Burgess, Winona, Alyssa Margolis, Sara Gibbs, Rafael Silva Duarte, and Mary Jackson. "Disinfectant Susceptibility Profiling of Glutaraldehyde-Resistant Nontuberculous Mycobacteria." Infection Control & Hospital Epidemiology 38, no. 7 (2017): 784–91. http://dx.doi.org/10.1017/ice.2017.75.

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OBJECTIVEActivated alkaline glutaraldehyde (GTA) remains one of the most widely used high-level disinfectants worldwide. However, several reports have highlighted the potential for nontuberculous mycobacteria to develop high-level resistance to this product. Because aldehyde resistance may lead to cross-resistance to other biocides, we investigated the susceptibility profile of GTA-resistantMycobacterium chelonaeandM. abscessusisolates to various disinfectant chemistries.METHODSHigh-level disinfectants commonly used in the reprocessing of endoscopes and other heat-sensitive, semicritical medical equipment, including different formulations of aldehyde-based products and oxidizing agents, were tested against 10 slow- and fast-growing, GTA-susceptible and GTA-resistant,Mycobacteriumisolates in suspension tests and carrier tests at different temperatures.RESULTSWhile peracetic acid– and hydrogen peroxide–based disinfectants (S40, Resert XL, Reliance DG) efficiently killed all of theMycobacteriumisolates, GTA- and ortho-phthalaldehyde-based products (ie, Cidex, Aldahol, Cidex OPA) showed variable efficacy against GTA-resistant strains despite the ability of some formulations (Aldahol) to overcome the resistance of some of these isolates, especially when the temperature was increased from 20°C to 25°C.CONCLUSIONSApplication permitting, oxidizing chemistries may provide a safe alternative to aldehyde-based products, particularly in GTA-resistant mycobacterial outbreaks.Infect Control Hosp Epidemiol2017;38:784–791
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Alwaeli, Wael Abdul Alrazzaq, and Mohammed Abdul Sattar Alsegar. "Influence of Different Disinfectants on Surface Hardness of Heat-Polymerized Acrylic Resins utilized for Orthodontic Appliance." Journal of Techniques 3, no. 1 (2021): 61–65. http://dx.doi.org/10.51173/jt.v3i1.286.

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Heat-polymerized resins are common substances utilized for construction of removable dental prostheses (i.e. Orthodontic appliances). Such materials should have appropriate physical properties. The use of disinfectant solutions might influence the physical characteristics of the acrylic materials. This study was conducted to assess the influence of different disinfectants on heat polymerized resins in terms of surface hardness. Forty specimens were made from heat-polymerized acrylic resins in total. The investigation comprised 4 groups according to the disinfectants utilized and each group had ten specimens. The 1st group was immersed in distilled water (control); the 2nd group was disinfected in Efferdent; the 3rd group was disinfected in 4 % Chlorhexidine; and the 4th group was disinfected in 1% hypochlorite. All specimens were tested via a hardness tester three times and the average reading was measured for all specimens. The statistical results indicated a slight decline in the mean values of surface hardness of acrylic specimens following immersion in disinfectants. The greatest value of mean was for distilled water specimens whereas the lowest value of mean was for 4% Chlorhexidine specimens. Furthermore, no significant differences were found among all groups (P>0.05). The study concluded that the use of disinfectants solutions slightly decreases the hardness of heat polymerized resins. It is recommended to evaluate the chemical interaction between the acrylic resins and disinfectants.
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Nuradji, Harimurti, Rahmat Setya Adji, and Qadrina Ayu Besticia. "The effect of heat and disinfectants on the viability of infectious bursal disease virus." BIO Web of Conferences 33 (2021): 06008. http://dx.doi.org/10.1051/bioconf/20213306008.

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Infectious Bursal Disease (IBD) has been reported in Indonesia since 1983 and has become an endemic disease. IBD virus is known to be quite resistant to physical and chemical reagents compared to other viruses, causing this disease is hard to be eradicated. This study aims to evaluate the effect of heat and disinfectants on the viability of the IBD virus. This study was conducted using a local isolate of IBDV obtained from IRCVS. The virus was exposed to heat and disinfectant. Heat treatment was conducted by exposing the virus to 560C and 600C for 30, 60, 120, and 300 minutes. Similarly, the virus was also treated with two disinfectants, virkon and sodium hypochlorite (bleach) for 30, 60, 120, and 300 minutes with different concentrations. Results showed that the virus can be inactivated at a temperature of 800C and 560C for 120 and 300 minutes, respectively. Virkon at a concentration of 1:200 and 1:400 was able to inactivate the virus at 30, 60, 120, and 300 minutes, while sodium hypochlorite 0.5% requires at least 60 minutes to inactivate the virus.
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Chassot, Ana Lúcia Campani, Maria Inês Pereira Poisl, and Susana Maria Werner Samuel. "In Vivo and In Vitro evaluation of the efficacy of a peracetic acid-based disinfectant for decontamination of acrylic resins." Brazilian Dental Journal 17, no. 2 (2006): 117–21. http://dx.doi.org/10.1590/s0103-64402006000200006.

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The purpose of this study was to assess the antimicrobial efficacy of a peracetic acid-based disinfectant for decontamination of heat-polymerized, chemically activated and microwave-polymerized acrylic resins. Resin plates were contaminated in vivo upon intraoral use by 10 volunteers for 7 nights and slabs were contaminated in vitro by contact with Bacillus subtilis and Bacillus stearothermophilus. The contaminated acrylic resin specimens were immersed in a 0.2% peracetic acid-based disinfectant (Sterilife®; Lifemed) for 5 min or 10 min and placed in a BHI culture medium. After incubation at 37°C for 48 h, bacterial growth was assessed by analyzing turbidity of the medium. For all types of acrylic resin, no turbidity of the medium was observed for any of the resin specimens immersed in the peracetic acid-based disinfectant for either 5 or 10 min. On the other hand, the media with specimens that were not immersed in the disinfectant (control) showed turbidity in 100% of the cases, indicating the presence of microorganisms in both tested conditions. In conclusion, immersion for at least 5 min in a 0.2% peracetic acid-based disinfectant promoted high-level disinfection of heat-polymerized, chemically activated and microwave-polymerized acrylic resins contaminated with either human saliva or Bacillus subtilis or Bacillus stearothermophilus.
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Thaweboon, Sroisiri, Boonyanit Thaweboon, Plang Ngern Saksit, Passiri Nisalak, and Rattiporn Kaypetch. "Type IV Dental Stone Incorporated with Antimicrobial Agents and its Physical Properties." Advanced Materials Research 898 (February 2014): 292–95. http://dx.doi.org/10.4028/www.scientific.net/amr.898.292.

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Contamination of dental casts can occur via direct contact with impression materials that are contaminated by patients fluids. Thus, the development of dental stone with antimicrobial activity to reduce cross-contamination between patients and laboratory personnel is needed. This study aims to evaluate the influence of incorporation of disinfectants into type IV dental stone on its antimicrobial activities and physical properties such as setting time and dry compressive strength. Type IV dental stone incorporated with 4 types of disinfectants; Diamond Rock D (3-iodo-2-propynylbutylcarbamate), Diamond Rock B (zeolite), Diamond Rock Z (thiabendazole) and Diamond Rock T (2-benzimidazole carbamic acid), were tested in this study compared with the control, Diamond Rock O (type IV dental stone without disinfectant). Microorganisms tested wereStaphylococcus aureusATCC 6538,Pseudomonas aeruginosaATCC 27853 andCandida albicansATCC 1023. One hundred μL of each microbial suspension (108CFU/mL) was dropped on hydrocolloid impression (Jeltrate; Caulk/Dentsply, Milford, DE) and left dry. All types of stone mixes were prepared and poured into the impressions and allowed to set for 60 min. Then the stone samples were removed and the microbial contact surfaces were imprinted on Brain Heart Infusion agar plates. After incubation, colonies appeared on agar were gram-stained and counted. The setting time and dry compressive strength were tested in accordance with International Standard (ISO) 6873: 1998 (E). Dental stone incorporated with 4 types of disinfectants showed antimicrobial activity against all tested microorganisms with the percentage of microbial reduction ranging from 83% to 100%. Among all types of dental stone, no significant difference in setting time was observed. In dry compressive strength testing, the disinfectant-containing dental stone had significant higher strength than that without the disinfectant. The newly developed type IV dental stone incorporated with disinfectants had antimicrobial effects against all tested microorganisms. The physical properties of the modified dental stones were within the ISO standards. However, further investigation on other properties such as dimensional stability, detail reproduction and clinical usage are still needed.
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Harahap, Sefty Aryani, Lasminda Syafiar, and Yosepha Yulinda Esdaria Lubis. "Pengaruh Desinfeksi Energi Microwave Terhadap Kekuatan Transversal Resin Akrilik Polimerisasi Panas." Jurnal Material Kedokteran Gigi 8, no. 1 (2019): 17. http://dx.doi.org/10.32793/jmkg.v8i1.363.

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Disinfectant by microwave energy is highly recommended as a solution to solve the problem of chemical disinfection on denture bases. One of the denture base materials is heat cured acrylic resin. Aim, to evaluate the effect of disinfectant by microwave energy with different time on the transversal strength of heat cured acrylic resin. 30 plates (n = 6) of heat cured acrylic resin with size 65x10x2,5 mm were divided into 5 groups (control; and microwave energy disinfected for 2, 4 , 6, and 8 minutes with 650 Watts of power). Transversal strength test was carried out using Torsee's Electronic System Universal Testing Machine with a test speed of 0.1 mm / second, and a load cell of 50 kgf. Data analyzed using one-way ANOVA and LSD pos hoc. Results, there were significant differences in the transverse strength among all groups (p <0.05). Mean values of all groups were 103.59 ± 0.66 MPa; 112.02 ± 2.10 MPa; 117.48 ± 1.73 MPa; 125.46 ± 2.25 MPa; and 135.89 ± 1.56 MPa respectively. Conclusion, the longer it is disinfected by microwave energy, the higher the transversal strength of heat cured acrylic resin.
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Pedahzur, R., D. Katzenelson, N. Barnea, et al. "The efficacy of long-lasting residual drinking water disinfectants based on hydrogen peroxide and silver." Water Science and Technology 42, no. 1-2 (2000): 293–98. http://dx.doi.org/10.2166/wst.2000.0328.

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The aim of the present work was to evaluate the disinfectant capacity and the possible fields of application of a combined silver and hydrogen peroxide (HP) water disinfectant. The findings demonstrated the high bactericidal action of silver (on E. coli) and its relatively ineffective virucidal effect (on MS-2 phage). HP was found to have a small bactericidal effect and a mild virucidal one. When combined, silver and HP usually exhibited a synergistic action on the viability of E. coli and on the luminescence of recombinant luminescent E. coli. In some instances, the combined bactericidal effects were 1000-fold higher than the sum of the separate ones. No increased virucidal action was observed. The biocidal action of the combination generally increased with increasing temperature and pH, and decreased in secondary and tertiary effluents. The physiological effects and mechanisms of toxicity of HP, silver and their combinations, were assessed by monitoring the induction of stress promoters upon exposure to the active agents, and by assessing the sensitivity of E. coli mutated in major stress responses to HP, silver and their combinations. The results showed that HP induced a wide array of stress responses, that both silver and HP induced promoters regulated by the heat shock response, and that the dnaK promoter (regulated by the heat shock response) was synergistically induced. The mutant sensitivity tests showed that bacteria deficient in the ability to activate central cellular stress responses (SOS, heat shock, stationary phase, oxidative) were hypersensitive to both HP and silver. These results imply that cellular proteins, and possibly the DNA, are the cellular moieties chiefly affected. The above findings suggest that the potentiated effect of HP and silver is a metabolically dependant/related process that stems from a combination and/or accumulation of physiological effects exerted by the active ingredients. The physico-chemical properties of the combined disinfectant, and its disinfection capacity, points to its potential application as a long-term secondary residual disinfectant for water of relatively high quality.
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Dissertations / Theses on the topic "Heat as a disinfectant"

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Pratt, Michael David. "Differential Response of Various Spore Species to Sporicidal Disinfectants." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1447.

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In the fall of 2001, letters laced with anthrax spores were delivered to various news organizations in New York and Florida, as well as to two Senators in Washington, D.C. Over 22 anthrax infections and five deaths resulted from exposure to these spores, and decontamination of the affected buildings was both time consuming and costly. Since these attacks, interest in sporicidal disinfectants has increased greatly. Many chemical sporicidal disinfectants are available commercially, but the exposure time required to sterilize can be relatively long. In addition, some spores are simply injured or inhibited by chemical disinfectants, but not necessarily killed. Studies have shown that heat shocking spores after exposure to some disinfectants can aid in the recovery of injured spores, but these studies have not evaluated this effect on spores exposed to peracetic acid-based disinfectants. Recently, our lab has evaluated two novel peracetic acid-based chemical disinfectants, PeraDox™ and PeraDox Ultra™ for their activity against a variety of bacterial agents. Results indicated that the PeraDox™ solutions had extremely rapid cidal activity on a wide variety of microorganisms, especially those with innate germicide resistance, such as bacterial endospores. However, possible recovery of these spores after heat shock was not evaluated. The purpose of this study was to compare the sporicidal activity of three disinfectants: CIDEX™, PeraDox™, and PeraDox Ultra™ on three species of spores (Bacillus subtilis, Bacillus anthracis, and Clostridium sporogenes) in suspension, with and without heat shocking. Spores in suspension were exposed to disinfectants for specified times and assayed for viable spores. These spore suspensions were then heat shocked (80 ºC for 20 min) and assayed again. After exposure to peracetic acid-based disinfectants and subsequent heat shock, some B. subtilis spores recovered, resulting in up to a one log difference in viable spores. Other species and disinfectants did not show this effect. In addition, the activity of these disinfectants on spores dried onto a surface was evaluated using the standard AOAC sporicidal test. The current AOAC test specifies heat shocking after three weeks of incubation. In this study, we evaluated the AOAC sporicidal test by heat shocking immediately following disinfection and after three weeks of incubation as prescribed. Carrier tests showed a greater number of positive B. subtilis carriers when heat shocked immediately following PeraDox™, and PeraDox Ultra™ treatment, than when carriers were heat shocked after three weeks. In summary, results showed that heat shocking increases resuscitation of spores treated with some disinfectants, but not others. Spores in suspension and those dried onto carriers responded similarly to heat shocking. Finally, PeraDox™ formulations had surprisingly rapid sporicidal kinetics.
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Taylor, Robert Henry. "Disinfectant Susceptibility of Mycobacterium avium." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36018.

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Mycobacterium avium, an opportunistic human pathogen, infects between 25 and 50% of advanced-stage acquired immuno-deficiency syndrome (AIDS) patients in the United States. M. avium has been isolated from many environmental sources including: natural waters, soils, and aerosols. M. avium has also been recovered from within municipal and hospital drinking water systems. Rhesus macaques (Macaca mulatta) infected with the simian HIV analog, SIV, have been shown to acquire M. avium infections from potable water.

Reduced-aggregate fractions (cell suspensions free of large aggregates) of Mycobacterium avium were exposed to chlorine, monochloramine, chlorine dioxide, and ozone and kinetics of disinfection measured. Chlorine disinfection kinetics was also measured in M. avium cultures grown in biofilms.

M. avium exhibited a high resistance to chlorine compared to E. coli. M. avium CT99.9% (disinfectant concentration x time to 3 logs cell inactivation) values were between 571- and 2318 -times those of E. coli. Clinical isolates of M. avium showed 0.24 and 2.5-fold increase in resistance to chlorine compared to their pulsed-field-gel-electrophoresis- (PFGE) matched environmental isolates.

M. avium strains exhibited a mixed response to exposure to monochloramine. The CT99.9% values of three strains (2 clinical, 1 environmental) were between 6.3- and 23.5- times that of E. coli. Two strains (1 clinical, 1 environmental) exhibited CT99.9% values approximately the same as E. coli, a difference from all the other disinfectants which were much less effective on M. avium than on E. coli.

M. avium strains exhibited a high resistance to chlorine dioxide when compared to E.coli. M. avium CT99.9% values of between 133- and 706- times higher that that of E. coli. In the paired isolates tested, the clinical isolate was 5.3 times more resistant than the matched environmental isolate.

M. avium exhibited a high resistance to ozone when compared to E. coli. M. avium strains exhibited a CT99.9% value of between 52 and 90 times higher that that of E. coli. In the paired isolates tested, the clinical isolate was nearly identical as judged by CT99.9% values. M. avium strain 5002 exhibited an unusual disinfection kinetics curve. Disinfection rate increased by a non-logarithmic factor, indicating that inactivation efficiency was increasing over time.

M. avium strain 1060 showed between a 17% decrease to a 265% increase in CT99.9% value when grown as biofilms as opposed to suspension. Due to the large variance in biofilm density and and CT99.9% values, any conclusions based on these experiments should be considered tentative at best.

M. avium's resistance to chlorine and chlorine dioxide approaches that of the protozoan cysts of Giardia muris and Entamoeba hystolytica. M. avium is much less resistant, relatively, to monochloramine possessing values similar to E. coli. Ozone resistance of M. avium is two orders of magnitude greater than E. coli and one order of magnitude of less than G. muris cysts.

A critical concentration threshold level for chlorine dioxide was found. That is, there was no linear relationship between concentration of chlorine dioxide and cell inactivation. Initial experiments using a range of concentrations from 0.1 ppm to 0.5 ppm chlorine dioxide showed a biphasic curve with the inflection point (indicating the critical concentration) between 0.3 and 0.4 ppm chlorine dioxide.


Master of Science
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Warn, Elin Ann. "Effectiveness of Disinfectant Residuals in Distribution Systems." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/43581.

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In many drinking water systems in the United States, disinfectant is added to water as it leaves the plant to maintain a residual concentration in the distribution system. The disinfectant residual is maintained to inactivate contamination that enters the distribution system, to control biofilms, and to act as a sentinel for contamination in the distribution system. A model was developed to evaluate the potential effectiveness of the disinfectant residual at inactivating contamination. The model was used to examine contamination of a hypothetical distribution system through backpressure at a cross-connection under different operating conditions. The dilution and pathway of the hypothetical contaminant were examined as the contaminant moved through the system. Disinfection and inactivation kinetic relationships were used to model the inactivation of the contaminant in the system by the amount of disinfectant present. The model showed that both chlorine and chloramines in each decay and inactivation condition considered provided some benefit over no disinfectant at all when examining susceptible organisms. Chlorine, under medium and low decay conditions, provided the best inactivation. Where 29.8% of total node time steps received a contamination of concern in the absence of disinfectant residual, as low as 4.8% of total node time steps received a contamination of concern in the presence of disinfectant residual. Chloramines was found to persist longer in the distribution system, but resulted in much lower inactivation compared to chlorine. Disinfectant doses typical of common distribution system operation were able to reduce the impact of contamination once it entered the distribution system but, except for four cases, were unable to prevent contamination from spreading within the distribution system. Therefore, it was concluded that presence of a disinfectant residual will reduce the total number of exposure opportunities from a contamination event, but cannot be relied upon to eliminate the chance of exposure resulting from contamination.
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Ringer, Erin E. "Reduction of trihalomethanes using ultrasound as a disinfectant." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-050307-084016/.

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Ioannou, Christopher J. "Action of disinfectant quaternary ammonium compounds against Staphylococcus aureus." Thesis, University of Brighton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423601.

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Farren, Elizabeth Anne. "Reducing trihalomethane concentrations by using chloramines as a disinfectant." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0429103-095058.

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KATO, NOBUO, NOBORU TAKESHIMA, ASAKATSU SUZUKI, and YOSHIMICHI NAMBA. "Comparative Study of Bactericidal Activities of Six Different Disinfectants." Nagoya University School of Medicine, 1985. http://hdl.handle.net/2237/17483.

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Othman, Fauziah. "The effects of formaldehyde vapour on the morphology of the respiratory epithelium of the pre- and post-hatched chick." Thesis, University of Glasgow, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338371.

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Suarez, Rachel. "Chemical disinfectant resistance in multiple antibiotic resistant and susceptible bacteria." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ57585.pdf.

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Lodhia, Raj Travis. "Effectiveness of Hydrogen Peroxide Cleaner Disinfectant Wipes in Dental Offices." Thesis, The University of Arizona, 2013. http://hdl.handle.net/10150/297690.

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Objective: The goal of this study was to assess the efficacy of hydrogen peroxide cleaner disinfectant wipes in reducing the presence of bacteria, specifically Escherichia coli and Methicillin-resistant Staphylococcus aureus (MRSA), opportunistic pathogens, on surfaces in dental offices. Methods: Twelve locations in three different dental offices were tested before, and after the use of the hydrogen peroxide wipes. The colony forming units cm2 were calculated to determine the capacity of the bacterial wipes to reduce bacteria on high touch fomites. Bacterial samples underwent biochemical analyses to determine the presence of heterotrophic bacteria, coliform bacteria, E. coli, and MRSA. Results: Coliform/E. coli were especially prevalent on the dentist’s chair and bathroom doorknob (5.50E+03 CFU/100cm²/1.47E+03 MPN/100cm²). MRSA was detected on the receptionist counter and computer mouse. The amount of heterotrophic bacteria, coliform bacteria, as well as E. coli decreased after the use of the hydrogen peroxide disinfecting wipes. Conclusions: Coliform bacteria, E. coli and MRSA were detected on high touch areas within dental offices. The use of hydrogen peroxide disinfecting wipes can significantly decrease the occurrence of potentially pathogenic bacteria on fomites.
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Books on the topic "Heat as a disinfectant"

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Knöller, Barbara. Die Geschichte der Hitzesterilisation und einiger ihrer Standards. MHP-Verlag, 2002.

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Tyler, Ruth. Viral disinfectant testing: A proposed method. University of Birmingham, 1987.

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DiGiano, Francis A. Disinfectant decay and corrosion: Laboratory and field studies. Awwa Research Foundation, 2004.

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Pfuderer, Gerhard. Hygienische Untersuchungen über die Desinfektionswirkung von Kalk bei verschiedenen Verfahren der Klärschlammbehandlung. R. Oldenbourg, 1985.

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Woods, Stuart. Heat. HarperCollins, 1994.

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Field, Andrea R. Heat. Britannica Educational Pub., 2013.

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ill, Carr Ed, ed. Heat. Thomson Learning, 1993.

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Heat. Scholastic, Inc., 2007.

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Gordon, Mike, 1948 March 16-, ed. Heat. Wayland, 1995.

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Heat. World Book, 2011.

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Book chapters on the topic "Heat as a disinfectant"

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Gooch, Jan W. "Disinfectant." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13579.

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Gerba, Charles P. "Silver as Disinfectant." In Encyclopedia of Metalloproteins. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-1533-6_529.

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Gottardi, Waldemar. "Iodine as Disinfectant." In Iodine Chemistry and Applications. John Wiley & Sons, Inc, 2014. http://dx.doi.org/10.1002/9781118909911.ch20.

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Gerba, Charles P. "Titanium Dioxide as Disinfectant." In Encyclopedia of Metalloproteins. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-1533-6_530.

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Silvestry-Rodriguez, Nadia, Enue E. Sicairos-Ruelas, Charles P. Gerba, and Kelly R. Bright. "Silver as a Disinfectant." In Reviews of Environmental Contamination and Toxicology. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-69163-3_2.

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Webber, Mark A., Martin J. Woodward, and Laura J. V. Piddock. "Disinfectant Resistance in Bacteria." In Antimicrobial Resistance in Bacteria of Animal Origin. ASM Press, 2019. http://dx.doi.org/10.1128/9781555817534.ch8.

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Bocci, Velio. "Ozone as a Drinking Water Disinfectant." In Oxygen-Ozone Therapy. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-015-9952-8_31.

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Reddy Gade, Vishal, Deep Seth, Manish Kumar Agrawal, and Bhaskar Tamma. "Development of Autonomous UVC Disinfectant Robot." In Digital Human Modeling and Applications in Health, Safety, Ergonomics and Risk Management. AI, Product and Service. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77820-0_11.

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Wirtanen, G., and T. Mattila-Sandholm. "Disinfectant Testing Using Foodborne Bacteria in Biofilms." In Biofilms — Science and Technology. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-1824-8_53.

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Rottjakob, Dave, and Christine Chan. "Disinfectant Qualification Testing Considerations for Critical Manufacturing Environments." In Disinfection and Decontamination. CRC Press, 2018. http://dx.doi.org/10.1201/9781351217026-5.

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Conference papers on the topic "Heat as a disinfectant"

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Miner, Norman, Valerie Harris, Towanda Ebron, and Natalie Lukomski. "Studies to find a better high level disinfectant for heat-sensitive endoscopes." In Proceedings of the International Conference on Antimicrobial Research (ICAR2010). WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814354868_0075.

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Ponnamma, Deepalekshmi, Mohammad Talal Houkan, Muni Raj Mourya, and Noora Al-Thani. "Designing a Quick Fix Shutter for Auto-Disinfecting Scan Glass Surface in Biometric Scanners." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0295.

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Fingerprint scanners are significant devices in professional life, and its contamination can be potential sources of COVID-19 transmission. Manual disinfection of the fingerprint scanner after every single use is time consuming and even can adversely affect its electronics/functioning. Thus, with an aim to prevent the spread of infectious disease by cross contamination and implement the safe use of fingerprint scanner, we have developed a smart quick fix technology for automatic disinfection of finger print scanner glass after every single use. The smart portable top mount assembly uses two different disinfecting methods that ensures higher degree of disinfection. The disinfection is based on the simultaneous ultraviolet (UV) and heat treatment for a specific short time, and required to kill all the viruses on the scan glass surface. Moreover, developing this disinfecting technology with a universal design that can be fitted to any finger print scanner irrespective to its size makes it a novel idea.
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Fan, Maokui, and Haijiang Li. "Chlorine Disinfectant Selection Based on Experimental Method." In 2014 Seventh International Joint Conference on Computational Sciences and Optimization (CSO). IEEE, 2014. http://dx.doi.org/10.1109/cso.2014.30.

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Vimala, P., and R. Gokulakrishnan. "Implementation of IOT Based Automatic Disinfectant Robot." In 2021 International Conference on System, Computation, Automation and Networking (ICSCAN). IEEE, 2021. http://dx.doi.org/10.1109/icscan53069.2021.9526420.

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"Effect Comparison of Double-stranded Quaternary Disinfectant Wipes and Chlorine Disinfectant of Sterilizing the Surface of the Operating Room." In 2018 3rd International Conference on Life Sciences, Medicine, and Health. Francis Academic Press, 2018. http://dx.doi.org/10.25236/iclsmh.18.009.

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Zhu, Liang, Mostafa Tolba, Dwayne Arola, Maher Salloum, and Fernando Meza. "Evaluation of Effectiveness of Er,Cr:YSGG Laser for Root Canal Disinfection: Theoretical Simulation of Temperature Elevations in Root Dentin." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-204616.

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Lasers have been used in dentistry for removing hard tooth tissue for more than twenty years. Erbium, chromium: yttrium, scandium, gallium, garnet (Er, Cr: YSGG) lasers are currently being investigated for disinfecting the root canal system, since bacteria can spread from the root canal surface to the deep dentin via the dentin tubules [1]. It is expected that temperature elevation in the deep dentin is sufficient to eradicate bacteria there. Prior to using laser therapy, it is important to understand the temperature distribution and to assess thermal damage to the surrounding tissue. In this study, we develop a heat transfer model to estimate the temperature elevations in both the tooth root and surrounding tissue during Er,Cr:YSGG laser disinfection of the root canal surface. The laser power level, pulse setting, as well as laser duration are incorporated into the Pennes bioheat equation for the theoretical study. We propose a treatment protocol that achieves better heat penetration with shorter treatment time than the existing protocols used in dentistry [2].
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Megalingam, Rajesh Kannan, Akhil Raj, Sakthiprasad Kuttankulangara Manoharan, and Vijay Egumadiri. "App Based Teleoperated UV Disinfectant Robot for COVID Cause." In 2021 Second International Conference on Electronics and Sustainable Communication Systems (ICESC). IEEE, 2021. http://dx.doi.org/10.1109/icesc51422.2021.9532791.

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Patchanee, Prapas, Peter B. Bahnson, and Thomas D. Crenshaw. "Chlorate and disinfectant modify Salmonella enterica shedding in weaned pigs." In Sixth International Symposium on the Epidemiology and Control of Foodborne Pathogens in Pork. Iowa State University, Digital Press, 2005. http://dx.doi.org/10.31274/safepork-180809-734.

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TENEBE, IMOKHAI T., PRAISEGOD CHIDOZIE EMENIKE, DAVID O. OMOLE, et al. "PREDICTING DEGRADATION WITH BIOCHEMICAL OXYGEN DEMAND IN DISINFECTANT-POLLUTED SEWAGE." In WATER AND SOCIETY 2017. WIT Press, 2017. http://dx.doi.org/10.2495/ws170301.

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De Groote, Mary A., Sara Gibbs, Vinicius Calado Nogueira de Moura, et al. "Disinfectant-Resistance In Rapidly-Growing Mycobacteria: Occurrence And Molecular Mechanisms." In American Thoracic Society 2011 International Conference, May 13-18, 2011 • Denver Colorado. American Thoracic Society, 2011. http://dx.doi.org/10.1164/ajrccm-conference.2011.183.1_meetingabstracts.a3317.

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Reports on the topic "Heat as a disinfectant"

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Timms, Leo L. Evaluation of Chlorine Stability in a Novel Teat Dip Disinfectant System. Iowa State University, 2013. http://dx.doi.org/10.31274/ans_air-180814-968.

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Oberst, R. D., Jill Marie Bieker, and Caroline Ann Souza. Inactivation of various influenza strains to model avian influenza (Bird Flu) with various disinfectant chemistries. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/877140.

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Brokaw, John. Guidance for Conforming to the Requirements of the Interim Enhanced Surface Water Treatment Rule and the Disinfectant/Disinfection Byproducts Rule. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada369371.

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Stinn, John P., and Hongwei Xin. Heat Lamp vs. Heat Mat as Localized Heat Source in Swine Farrowing Crate. Iowa State University, 2014. http://dx.doi.org/10.31274/ans_air-180814-1213.

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Armstrong, Lawrence E. Heat Exhaustion. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada212128.

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Rekos, Jr, N., and E. Parsons, Jr. Heat engines. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/6905384.

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Shen, D. S., R. T. Mitchell, D. Dobranich, D. R. Adkins, and M. R. Tuck. Micro heat spreader enhanced heat transfer in MCMs. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10107765.

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Hodgdon, James A. Body Heat Storage and Work in the Heat. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada430223.

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Maynard, Julian D. Stack/Heat-Exchanger Research for Thermoacoustic Heat Engines. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada327871.

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Culver, G. DHE (downhole heat exchangers). [Downhole Heat Exchangers (DHE)]. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6304383.

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