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https://www.readbyqxmd.com/read/28646800/regulated-and-unregulated-halogenated-disinfection-byproduct-formation-from-chlorination-of-saline-groundwater
#1
Aleksandra Szczuka, Kimberly M Parker, Cassandra Harvey, Erin Hayes, Avner Vengosh, William A Mitch
Coastal utilities exploiting mildly saline groundwater (<150 mg/L chloride) may be challenged by disinfection byproduct (DBP) formation, a concern likely to increase with sea-level rise. Groundwater from North Carolina coastal aquifers is characterized by large variations in concentrations of halides (bromide up to 10,600 μg/L) and dissolved organic carbon (up to 5.7 mg-C/L). Formation of 33 regulated and unregulated halogenated DBPs, including trihalomethanes (THMs), haloacetic acids (HAAs), haloacetonitriles, haloacetamides, and haloacetaldehydes, was measured after simulated chlorination of 24 coastal North Carolina groundwater samples under typical chlorination conditions...
June 12, 2017: Water Research
https://www.readbyqxmd.com/read/28646693/antibacterial-effect-of-genetically-engineered-bacteriophage-%C3%AF-ef11-%C3%AF-fl1c-%C3%AE-36-p-nisa-on-dentin-infected-with-antibiotic-resistant-enterococcus-faecalis
#2
Justine Monnerat Tinoco, Nadia Liss, Hongming Zhang, Roni Nissan, Wanda Gordon, Eduardo Tinoco, Luciana Sassone, Roy Stevens
OBJECTIVE: Enterococcus faecalis is a gram-positive facultative anaerobic bacterium, which is present in 30-89% of teeth with postendodontic treatment failures. E. faecalis is capable of penetrating dentinal tubules and surviving as a monoculture after conventional endodontic therapy, indicating that it is resistant to commonly used endodontic disinfection protocols. Different E. faecalis strains have shown resistance to several antibiotics, and have been associated with both dental pathology and systemic infections...
June 12, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28646571/comparison-of-reed-water-lettuce-in-constructed-wetland-for-sewage-water-treatment
#3
Abdullah Yasar, Ayesha Zaheer, Amtul Bari Tabinda, Marryam Khan Yusra Mahfooz
In the present study two designs Vertical and Horizontal system were used and two different plant species, water lettuce (Pistia stratiotes) and reed plant (Phragmites karka) were compared for their removal efficiency. Vertical system appeared to be more stable and efficient for almost all the parameters. Vertical planted with water lettuce showed % removal efficiency for BOD, phosphate and chloride as 82, 95.4 and 51 respectively while turbidity and total suspended solids (TSS) removal efficiency was almost same...
June 21, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28645053/assessment-of-imaging-in-flow-system-flowcam-for-systematic-ballast-water-management
#4
Leonardo Romero-Martínez, Cees van Slooten, Enrique Nebot, Asunción Acevedo-Merino, Louis Peperzak
Assessing the disinfection of ballast water and its compliance with international standards requires determining the size, viability, and concentration of planktonic organisms. The FlowCAM (Flow Cytometer and Microscope) is an Imaging Flow Cytometry designed to obtain the particle concentration, images, and quantitative morphologic information. The objective in this paper is to establish the basis for transforming the FlowCAM from being a laboratory analyzer into a tool for systematic monitoring of ballast water...
June 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28644912/biofilm-formation-and-disinfectant-resistance-of-salmonella-spp-in-mono-and-dual-species-with-pseudomonas-aeruginosa
#5
Xinyi Pang, Yishan Yang, Hyun-Gyun Yuk
AIMS: This study aimed to evaluate the biofilm formation and disinfectant resistance of Salmonella cells in mono- and dual-species biofilms with Pseudomonas aeruginosa, and to investigate the role of extracellular polymeric substances (EPS) in protection of biofilms against disinfection treatment. METHODS AND RESULTS: The populations of Salmonella in mono- or dual-species biofilms with P. aeruginosa on stainless steel (SS) coupons were determined before and after exposure to commercial disinfectant, 50 μg ml(-1) chlorine or 200 μg ml(-1) Ecolab(®) Whisper(™) V (a blend of four effective quaternary ammonium compounds)...
June 23, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28643881/virucides-in-apiculture-persistence-of-surrogate-enterovirus-under-simulated-field-conditions
#6
Jana Prodělalová, Hana Malenovská, Romana Moutelíková, Dalibor Titěra
BACKGROUND: Honeybee viruses were recognized among the most important factors leading to colony losses worldwide. Colony food and faeces were regarded as possible source of infectious viruses able to contaminate environment and equipment of apiaries. Thus, methods for elimination of viruses are required. No cell culture assay for testing the effect of disinfectants on honeybee viruses is available yet. Therefore, surrogate virus was employed for testing of iodophor- and peracetic acid-based disinfectants efficacy in combination with six organic contaminants at +6 °C and +22 °C...
June 23, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28643606/origin-of-low-molecular-mass-aldehydes-as-disinfection-by-products-in-beverages
#7
María Serrano, Mercedes Gallego, Manuel Silva
A novel, simple and automatic method based on static headspace-gas chromatography-mass spectrometry has been developed to determine 10 low-molecular mass aldehydes that can be found in beverages, coming from the treated water used in their production. These aldehydes are the most frequently found in treated water as water disinfection by-products, so they can be used as indicators of the addition of treated water to beverages. The study covered a large number of fruit juices and soft drinks. The presence of the whole array of analytes is related to the contact with treated water during beverage production, mainly by the addition of treated water as ingredient...
June 23, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28643277/the-role-of-solubility-on-the-rejection-of-trace-organics-by-nanofiltration-membrane-exemplified-with-disinfection-by-products
#8
Fan-Xin Kong, Xiao-Mao Wang, Hong-Wei Yang, Jin-Fu Chen, Chun-Mei Guo, Tong Zhang, Yuefeng F Xie
Interactions of trace organic compounds (TOrCs) with polymeric nanofiltration (NF) membrane can affect their rejection. It is desirable to investigate whether solubility which depends on the free energy of interaction between these solutes and water correlates with rejection/adsorption and the potential to be incorporated in the partitioning terms of current NF model. A total of ten neutral disinfection by-products (DBPs) were selected as the model compounds for TOrCs to comprehensively investigate the role of solubility on rejection and adsorption...
June 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28642746/virucidal-activity-of-fogged-chlorine-dioxide-and-hydrogen-peroxide-based-disinfectants-against-human-norovirus-and-its-surrogate-feline-calicivirus-on-hard-to-reach-surfaces
#9
Naim Montazeri, Clyde Manuel, Eric Moorman, Janak R Khatiwada, Leonard L Williams, Lee-Ann Jaykus
Human norovirus (NoV) is the leading cause of foodborne illnesses in the United States. Norovirus is shed in high numbers in the feces and vomitous of infected individuals. Contact surfaces contaminated with bodily fluids harboring infectious virus particles serve as vehicles for pathogen transmission. Environmental stability of NoV and its resistance to many conventional disinfectants necessitate effective inactivation strategies to control the spread of virus. We investigated the efficacy of two commercial disinfectants, hydrogen peroxide (7...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642342/survival-of-contagious-ovine-digital-dermatitis-codd-associated-treponemes-on-disposable-gloves-after-handling-codd-affected-feet
#10
J W Angell, S R Clegg, D H Grove-White, R W Blowey, S D Carter, J S Duncan, N J Evans
Both contagious ovine digital dermatitis (CODD) and bovine digital dermatitis (BDD) are causes of infectious lameness in sheep and cattle, respectively, and are strongly associated with the presence of specific treponemes, with three different cultivable phylogroups commonly isolated: Treponema medium, Treponema phagedenis and Treponema pedis The aim of this study was to investigate the potential to transmit CODD-associated Treponema species via gloves used when handling visibly clinically affected animals...
June 22, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28640797/rural-and-urban-differences-in-air-quality-2008-2012-and-community-drinking-water-quality-2010-2015-united-states
#11
Heather Strosnider, Caitlin Kennedy, Michele Monti, Fuyuen Yip
PROBLEM/CONDITION: The places in which persons live, work, and play can contribute to the development of adverse health outcomes. Understanding the differences in risk factors in various environments can help to explain differences in the occurrence of these outcomes and can be used to develop public health programs, interventions, and policies. Efforts to characterize urban and rural differences have largely focused on social and demographic characteristics. A paucity of national standardized environmental data has hindered efforts to characterize differences in the physical aspects of urban and rural areas, such as air and water quality...
June 23, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/28638939/-consequences-of-autopsies-for-the-living-causes-of-death-in-the-clinical-diagnosis-septic-and-toxic-shock
#12
REVIEW
L Ozretić, A Schwindowski, H-P Dienes, R Büttner, U Drebber, J W U Fries
BACKGROUND: There is reason to believe that the diagnosis of septic and toxic shock, as indicated on the death certificate, cannot be confirmed as the cause of death without autopsy and subsequent histological analysis. The external examination of the corpse can therefore not represent the sole basis for a reliable statement about the infection status of a corpse, e. g. as a prerequisite for embalming. MATERIAL AND METHODS: The validity of autopsy in determining septic and toxic shock as the cause of death is demonstrated in 7 exemplary cases...
June 21, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28638557/continuous-apical-negative-pressure-ultrasonic-irrigation-canui-a-new-concept-for-activating-irrigants
#13
Pablo Castelo-Baz, Purificación Varela-Patiño, Manuel Ruíz-Piñón, Francesc Abella, Ramón Miguéns-Vila, Benjamín Martín-Biedma
BACKGROUND: Irrigation of the root canal system is an essential step in the endodontic treatment. The aim of this article is to introduce continuous apical negative-pressure ultrasonic irrigation (CANUI), a new irrigation concept, and compare the characteristics of this new technique with current devices for activating the irrigant. MATERIAL AND METHODS: CANUI is designed for cleaning and disinfecting the root canal system. The device consists of a tube inside another tube that allows the continuous ultrasonic exchange of fresh irrigant, as the irrigant is simultaneously aspirated apically...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28638017/-intraoperative-disinfection-sterilization-and-repeated-use-of-infected-titanium-implant-in-treatment-of-scalp-radial-ulcer-with-recurrent-meningioma
#14
V I Sharobaro, A G Gavrilov, N E Manturova
No abstract text is available yet for this article.
2017: Khirurgiia
https://www.readbyqxmd.com/read/28636529/bladder-cancer-and-water-disinfection-by-product-exposures-through-multiple-routes-a-population-based-case-control-study-new-england-usa
#15
Laura E Beane Freeman, Kenneth P Cantor, Dalsu Baris, John R Nuckols, Alison Johnson, Joanne S Colt, Molly Schwenn, Mary H Ward, Jay H Lubin, Richard Waddell, G Monawar Hosain, Chris Paulu, Richard McCoy, Lee E Moore, An-Tsun Huang, Nat Rothman, Margaret R Karagas, Debra T Silverman
BACKGROUND: Ingestion of disinfection byproducts has been associated with bladder cancer in multiple studies. Although associations with other routes of exposure have been suggested, epidemiologic evidence is limited. OBJECTIVES: We evaluated the relationship between bladder cancer and total, chlorinated, and brominated trihalomethanes (THMs) through various exposure routes. METHODS: In a population-based case-control study in New England ( cases; controls), we estimated lifetime exposure to THMs from ingestion, showering/bathing, and hours of swimming pool use...
June 21, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28633052/disinfection-efficiencies-of-sage-and-spearmint-essential-oils-against-planktonic-and-biofilm-staphylococcus-aureus-cells-in-comparison-with-sodium-hypochlorite
#16
Dimitrios Vetas, Eleni Dimitropoulou, Gregoria Mitropoulou, Yiannis Kourkoutas, Efstathios Giaouris
Staphylococcus aureus causes human infections and foodborne intoxications. This study explored the potential antibacterial actions of sage and spearmint essential oils (EOs) against both its planktonic and biofilm cells, in comparison with sodium hypochlorite (NaOCl), a commonly applied chemical sanitizer. Initially, the minimum inhibitory and bactericidal concentrations (MICs, MBCs) of each plant mixture were determined against planktonic cultures, following growth at 30°C for 24h. Stationary phase planktonic bacteria were then individually exposed for 6min to either each EO (applied at 1-2×MBC; 2...
June 8, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28632831/-antiseptics-and-disinfectants-aiming-at-rational-use-recommendations-of-the-advisory-committee-on-healthcare-associated-infections-sociedad-chilena-de-infectolog%C3%A3-a
#17
Alexis Diomedi, Eiiana Chacón, Luis Delpiano, Beatrice Hervé, M Irene Jemenao, Myriam Medel, Marcela Quintanilla, Gisela Riedel, Javier Tinoco, Marcela Cifuentes
Proper use of antiseptics and disinfectants, is an essential tool to prevent the spread of infectious agents and to control of healthcare-associated infections (HAI). Given the increasing importance of environmental aspects, as well as several advances and updates in the field of its proper use at local and intemational level, the SOCHINF HAI Advisory Committee considers that it is necessary to develop a guide for the rational use of antiseptics and disinfectants, which it will provide consistent scientific basis with that purpose...
April 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28630689/why-language-matters-a-tour-through-hand-hygiene-literature
#18
Daniela Pires, Ermira Tartari, Fernando Bellissimo-Rodrigues, Didier Pittet
BACKGROUND: Hand hygiene has evolved over the last decades and many terminologies emerged. We aimed to analyse the evolution in the frequency of utilization of key hand hygiene terms in the literature along the years. METHODS: We identified keywords and Medical Subject Headings (MeSH) used in MEDLINE® indexation related to hand hygiene by searching international guidelines and the MeSH database. We performed a MEDLINE® search combining the selected keywords and MeSH and analysed the number of publications retrieved yearly...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28627491/survival-growth-performance-and-immune-capacity-of-the-juvenile-lined-seahorse-hippocampus-erectus-fed-with-rifampicin-treated-copepods
#19
Tingting Lin, Changbo Wang, Xin Liu, Fen Gao, Dongxue Xiao, Dong Zhang, Xialian Zhu
Gastrointestinal disease is one of the most serious diseases in cultured seahorse juveniles. Treatment with antimicrobials of live food (i.e. copepods and Artemia) that is used to feed the juveniles may be a promising measure to alleviate the occurrence of gastrointestinal disease. However, relevant investigations are rare. In the present study, we first investigated the antimicrobial efficacies on bacteria within copepods that were treated with 4 antimicrobials, including 3 antibiotics (i.e. enrofloxacin hydrochloride, oxytetracycline and rifampicin [RFP]) that are approved for use in aquaculture and 1 disinfectant (i...
June 19, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28626312/bacterial-contamination-in-physical-therapy-departments-in-the-state-of-kuwait
#20
Sameera H Aljadi, Mashael Al-Shemmari, Jumana Al-Ramzi, Shoug Al-Abdullatif, Zahraa Hajeyah, Laila Jamal, Sara Al-Bahar
[Purpose] Interferential therapy and electrical stimulation are electrophysical modalities commonly used in physical therapy departments to treat patients with musculoskeletal problems. These machines are applied directly to the patient's skin via a medium or electrodes, which can facilitate the transmission of microorganisms from one patient to another. The purpose of this study was to determine the extent of microorganism contamination in the machines sponges at physical therapy departments in Kuwait hospitals...
June 2017: Journal of Physical Therapy Science
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