keyword
MENU ▼
Read by QxMD icon Read
search

Disinfection

keyword
https://www.readbyqxmd.com/read/29777920/modeling-and-manova-studies-on-toxicity-and-endocrine-potential-of-packaging-materials-exposed-to-different-extraction-schemes
#1
Natalia Szczepańska, Błażej Kudłak, Stefan Tsakovski, Galina Yotova, Miroslava Nedyalkova, Vasil Simeonov, Anna Dołęga, Jacek Namieśnik
The stability of the linings of packaging that is in contact with the goods stored has been of major concern during decades of the development of packaging materials. In this work, an attempt was undertaken to assess the applicability of using two bioassays (Microtox® and XenoScreen YES/YAS) in estimating the stability of packaging (cans, caps, multilayer material) and the impact of their degradation on the toxicity of some simulated media. The assessment of the impact of packaging storage conditions (temperature, disinfection, preservation, extracting and washing solvents) was planned and performed with i) regression modeling of the experimental effects on the ecotoxicity readings, ii) ANOVA and MANOVA estimation of the experimental conditions as significant factors affecting the toxicity results and iii) FTIR analysis of the packages...
May 16, 2018: Environmental Research
https://www.readbyqxmd.com/read/29775881/mass-flow-based-removal-and-transformation-potentials-for-tbbpa-hbcds-and-pbdes-during-wastewater-treatment-processes
#2
Un-Jung Kim, Jeong-Eun Oh
At a sewage treatment plant, 27 polybrominated diphenyl ethers, 17 methoxylated brominated diphenyl ethers, nine hydroxylated brominated diphenyl ethers, three hexabromocyclododecane diastereomers, and tetrabromobisphenol A were monitored at five major treatment stages (the influent, primary settlement stage, biological reaction stage, secondary settlement stage, and the UV irradiation disinfection stage). Hexabromocyclododecanes were the dominant chemicals, contributing 40% of the total concentrations of the chemicals in the dissolved phase of the sewage...
April 10, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29775686/the-comparative-efficacy-of-antiseptics-against-candida-auris-biofilms
#3
Ryan Kean, Emily McKloud, Eleanor M Townsend, Leighann Sherry, Christopher Delaney, Brian L Jones, Craig Williams, Gordon Ramage
Candida auris has emerged as a significant clinical entity due to its ability to cause outbreaks within the healthcare setting. A key feature of its nosocomial lifestyle is its ability to transfer between patients, yet little is known about the mechanisms behind this. A panel of C. auris clinical isolates was screened for their planktonic and sessile susceptibilities to skin disinfection challenge using povidone iodine, chlorhexidine and hydrogen peroxide. C. auris biofilms displayed increased tolerance to these strategies compared to planktonic cells...
May 15, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29774830/frequent-implication-of-multistress-tolerant-campylobacter-jejuni-in-human-infections
#4
Euna Oh, Linda Chui, Junghee Bae, Vincent Li, Angela Ma, Steven K Mutschall, Eduardo N Taboada, Lynn M McMullen, Byeonghwa Jeon
Campylobacter jejuni, a major cause of bacterial foodborne illnesses, is considered highly susceptible to environmental stresses. In this study, we extensively investigated the stress tolerance of 121 clinical strains of C. jejuni against 5 stress conditions (aerobic stress, disinfectant exposure, freeze-thaw, heat treatment, and osmotic stress) that this pathogenic bacterium might encounter during foodborne transmission to humans. In contrast to our current perception about high stress sensitivity of C. jejuni, a number of clinical strains of C...
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29772262/an-international-survey-of-cleaning-and-disinfection-practices-in-the-healthcare-environment
#5
Nikki Kenters, Thomas Gottlieb, Joost Hopman, Shaheen Mehtar, Marin L Schweizer, Ermira Tartari, E G W Huijskens, Andreas Voss
BACKGROUND: Antimicrobial resistance has become an urgent global health priority. Basic hygiene practices and cleaning and disinfection of the hospital environment are key in preventing pathogen cross-transmission. AIM: To our knowledge no studies have assessed the worldwide differences in cleaning and disinfection practices in healthcare facilities. The electronic survey described here was developed in order to evaluate differences in healthcare facility cleaning practices around the world...
May 14, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29772182/oxidation-of-cr-iii-fe-iii-mixed-phase-hydroxides-by-chlorine-implications-on-the-control-of-hexavalent-chromium-in-drinking-water
#6
Michelle Chebeir, Haizhou Liu
The occurrence of chromium (Cr) as an inorganic contaminant in drinking water is widely reported. One source of Cr is its accumulation in iron-containing corrosion scales of drinking water distribution systems as Cr(III)-Fe(III) hydroxide, i.e., FexCr(1-x)(OH)3(s), where x represents the Fe(III) molar content and typically varies between 0.25 and 0.75. This study investigated the kinetics of inadvertent hexavalent chromium Cr(VI) formation via the oxidation of FexCr(1-x)(OH)3(s) by chlorine as a residual disinfectant in drinking water, and examined the impacts of Fe(III) content and drinking water chemical parameters including pH, bromide and bicarbonate on the rate of Cr(VI) formation...
May 17, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29770172/prevention-of-cross-contamination-risk-by-disinfection-of-irreversible-hydrocolloid-impression-materials-with-ozonated-water
#7
Omid Savabi, Farahnaz Nejatidanesh, Kamran Poshang Bagheri, Leila Karimi, Ghazal Savabi
Background: Disinfection of dental impression is mandatory for preventing the cross infection between dental staff and dental laboratory. Ozone as a disinfectant can be used in various ways in dentistry. The aim of this study was to evaluate the efficacy of ozonated water for disinfection of irreversible hydrocolloid impression materials and preventing cross-contamination. Methods: Thirty-two circular specimens (1 cm diameter and 2 mm thickness) of irreversible hydrocolloid impression material were made...
2018: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29768464/photocatalytic-disinfection-of-surfaces-with-copper-doped-ti02-nanotube-coatings-illuminated-by-ceiling-mounted-fluorescent-light
#8
Tilen Koklic, Štefan Pintarič, Irena Zdovc, Majda Golob, Polona Umek, Alma Mehle, Martin Dobeic, Janez Štrancar
High economic burden is associated with foodborne illnesses. Different disinfection methods are therefore employed in food processing industry; such as use of ultraviolet light or usage of surfaces with copper-containing alloys. However, all the disinfection methods currently in use have some shortcomings. In this work we show that copper doped TiO2 nanotubes deposited on existing surfaces and illuminated with ceiling mounted fluorescent lights can retard the growth of Listeria Innocua by 80% in seven hours of exposure to the fluorescent lights at different places in a food processing plant or in the laboratory conditions with daily reinocuation and washing...
2018: PloS One
https://www.readbyqxmd.com/read/29767080/optimal-sulfur-amino-acid-to-lysine-ratio-for-post-weaning-piglets-reared-under-clean-or-unclean-sanitary-conditions
#9
Roselyn Kahindi, Alemu Regassa, John Htoo, Martin Nyachoti
Two 14-day experiments, each with 90 (Duroc × [Yorkshire × Landrace]; 7.3 ± 0.6 kg) piglets, were conducted to determine the optimum sulfur amino acid (SAA) to lysine (Lys) ratio (SAA:Lys) for piglets when reared under clean or unclean sanitary conditions using performance and non-performance response criteria. Piglets were randomly assigned to the following dietary treatments. The basal diet contained 1.18% standardized ileal digestible (SID) Lys, and the SAA:Lys was 52%. In diets 2 to 5, the basal diet was supplemented with 4 graded levels of dl-Met to make SAA:Lys of 56%, 60%, 64% and 68%...
December 2017: Animal nutrition
https://www.readbyqxmd.com/read/29765898/periodontal-healing-following-non-surgical-repair-of-an-old-perforation-with-pocket-formation-and-oral-communication
#10
Saeed Asgary, Prashant Verma, Ali Nosrat
Iatrogenic perforations negatively impact the outcome of endodontic treatments. Studies on prognostic factors showed that perforations in the coronal third of the root with periodontal pocket formation have an unfavorable prognosis. A 36-year-old female was referred for endodontic evaluation of tooth #13 with a history of an iatrogenic perforation, happened 3 years ago. There was a sinus tract associated with perforation, 10 mm probing on the mesial and mesio-palatal, bleeding on probing, radiolucent lesion adjacent to the perforation and complete resorption of the interdental bone between teeth #13 and #12...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29761412/persistence-of-hepatitis-a-virus-in-fresh-produce-and-production-environments-and-the-effect-of-disinfection-procedures-a-review
#11
REVIEW
N Cook, I Bertrand, C Gantzer, R M Pinto, A Bosch
Although information is limited, it is evident that prolonged persistence of infectious Hepatitis A virus (HAV) is a factor in the transmission of the virus via fresh produce. Consequently, data on persistence of the virus on produce, and in environments relevant to production, such as soils, water and surfaces, are required to fully understand the dynamics of transmission of HAV via foods. Furthermore, information on effective disinfection procedures is necessary to implement effective post-harvest control measures...
May 14, 2018: Food and Environmental Virology
https://www.readbyqxmd.com/read/29760172/development-of-a-bar-code-based-exposure-assessment-method-to-evaluate-occupational-exposure-to-disinfectants-and-cleaning-products-a-pilot-study
#12
Catherine Quinot, Sylvie Amsellem-Dubourget, Sofia Temam, Etienne Sevin, Christine Barreto, Arzu Tackin, Jérémy Félicité, Sarah Lyon-Caen, Valérie Siroux, Raphaële Girard, Alexis Descatha, Nicole Le Moual, Orianne Dumas
OBJECTIVE: Healthcare workers are highly exposed to various types of disinfectants and cleaning products. Assessment of exposure to these products remains a challenge. We aimed to investigate the feasibility of a method, based on a smartphone application and bar codes, to improve occupational exposure assessment among hospital/cleaning workers in epidemiological studies. METHODS: A database of disinfectants and cleaning products used in French hospitals, including their names, bar codes and composition, was developed using several sources: ProdHyBase (a database of disinfectants managed by hospital hygiene experts), and specific regulatory agencies and industrial websites...
May 14, 2018: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29759641/impact-of-antimicrobial-wipes-compared-with-hypochlorite-solution-on-environmental-surface-contamination-in-a-health-care-setting-a-double-crossover-study
#13
Harsha Siani, Rebecca Wesgate, Jean-Yves Maillard
OBJECTIVE: Antimicrobial wipes are increasingly used in health care settings. This study evaluates, in a clinical setting, the efficacy of sporicidal wipes versus a cloth soaked in a 1,000 ppm chlorine solution. INTERVENTION: A double-crossover study was performed on 2 different surgical and cardiovascular wards in a 1,000-bed teaching hospital over 29 weeks. The intervention period that consisted of surface decontamination with the preimpregnated wipe or cloth soaked in chlorine followed a 5-week baseline assessment of microbial bioburden on surfaces...
May 11, 2018: American Journal of Infection Control
https://www.readbyqxmd.com/read/29758045/the-microbial-killing-capacity-of-aqueous-and-gaseous-ozone-on-different-surfaces-contaminated-with-dairy-cattle-manure
#14
Ameer Megahed, Brian Aldridge, James Lowe
A high reactivity and leaving no harmful residues make ozone an effective disinfectant for farm hygiene and biosecurity. Our objectives were therefore to (1) characterize the killing capacity of aqueous and gaseous ozone at different operational conditions on dairy cattle manure-based pathogens (MBP) contaminated different surfaces (plastic, metal, nylon, rubber, and wood); (2) determine the effect of microbial load on the killing capacity of aqueous ozone. In a crossover design, 14 strips of each material were randomly assigned into 3 groups, treatment (n = 6), positive-control (n = 6), and negative-control (n = 2)...
2018: PloS One
https://www.readbyqxmd.com/read/29757939/heterogeneity-in-the-relationship-between-disinfection-by-products-in-drinking-water-and-cancer-a-systematic-review
#15
Tarik Benmarhnia, Ianis Delpla, Lara Schwarz, Manuel J Rodriguez, Patrick Levallois
The epidemiological evidence demonstrating the effect of disinfection by-products (DBPs) from drinking water on colon and rectal cancers is well documented. However, no systematic assessment has been conducted to assess the potential effect measure modification (EMM) in the relationship between DBPs and cancer. The objective of this paper is to conduct a systematic literature review to determine the extent to which EMM has been assessed in the relationship between DBPs in drinking water in past epidemiological studies...
May 14, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29755989/assessing-biosecurity-risks-for-the-introduction-and-spread-of-diseases-among-commercial-sheep-properties-in-new-south-wales-australia-using-foot-and-mouth-disease-as-a-case-study
#16
Jake Fountain, Robert Woodgate, Luzia Rast, Marta Hernández-Jover
Sheep production systems are a major industry in Australia, with a gross value of roughly $4.66 billion; 87.3% of which is attributable to export markets. Exotic diseases such as foot-and-mouth disease (FMD) are a potential threat to the viability of Australia's export market. Previous outbreaks of FMD in developed countries, and challenges in the management of onshore biosecurity, signify the importance of on-farm biosecurity in controlling disease transmission. This study aims to investigate the risk of disease introduction and spread among New South Wales (NSW) sheep properties using FMD as a case study and draw recommendation for the industry...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29753975/the-dependence-of-chlorine-decay-and-dbp-formation-kinetics-on-pipe-flow-properties-in-drinking-water-distribution
#17
Yingying Zhao, Y Jeffrey Yang, Yu Shao, Jill Neal, Tuqiao Zhang
Simultaneous chlorine decay and disinfection byproduct (DBP) formation have been discussed extensively because of their regulatory and operational significance. This study further examines chemical reaction variability in the water quality changes under various hydrodynamic conditions in drinking water distribution. The variations of kinetic constant for overall chlorine decay (kE ) and trihalomethane (THM) formation were determined under stagnant to turbulent flows using three devices of different wall demand and two types of natural organic matters (NOM) in water...
April 27, 2018: Water Research
https://www.readbyqxmd.com/read/29753242/inactivation-of-marine-heterotrophic-bacteria-in-ballast-water-by-an-electrochemical-advanced-oxidation-process
#18
Javier Moreno-Andrés, Noëmi Ambauen, Olav Vadstein, Cynthia Hallé, Asunción Acevedo-Merino, Enrique Nebot, Thomas Meyn
Seawater treatment is increasingly required due to industrial activities that use substantial volumes of seawater in their processes. The shipping industry and the associated management of a ship's ballast water are currently considered a global challenge for the seas. Related to that, the suitability of an Electrochemical Advanced Oxidation Process (EAOP) with Boron Doped Diamond (BDD) electrodes has been assessed on a laboratory scale for the disinfection of seawater. This technology can produce both reactive oxygen species and chlorine species (especially in seawater) that are responsible for inactivation...
May 3, 2018: Water Research
https://www.readbyqxmd.com/read/29753238/formation-and-transformation-of-chloroform-during-managed-aquifer-recharge-mar
#19
Dan Liu, Xiujuan Liang, Wenjing Zhang, Zhuo Wang, Tianyi Ma, Fulin Li, Xuequn Chen
Chlorination is an effective method to protect the safety of groundwater systems during managed aquifer recharge. However, chlorination leads to the formation of disinfection by-products, whose behavior in aquifers remains unclear and has caused public concern. In this study, an in-site test was performed on an anoxic aquifer in Shouguang City, China, to investigate the formation and transformation of chloroform during managed aquifer recharge. The field tests showed that the formation of chloroform in groundwater caused by the recharge of chlorinated water, and that the fate of chloroform was affected by adsorption and biodegradation...
May 9, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29753229/novel-agnws-pan-tpu-membrane-for-point-of-use-drinking-water-electrochemical-disinfection
#20
Xiaojun Tan, Chao Chen, Yongyou Hu, Junjie Wen, Yanzhe Qin, Jianhua Cheng, Yuancai Chen
The safety of drinking water remains a major challenge in developing countries and point-of-use (POU) drinking water treatment device plays an important role in decentralised drinking water safety. In this study, a novel material, i.e. a silver nanowires-polyacrylonitrile/thermoplastic polyurethane (AgNWs-PAN/TPU) composite membrane, was fabricated via electrospinning and vacuum filtration deposition. Morphological and structural characterisation showed that the PAN/TPU fibres had uniform diameters and enhanced mechanical properties...
May 9, 2018: Science of the Total Environment
keyword
keyword
39746
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"