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https://www.readbyqxmd.com/read/28647859/high-touch-surfaces-microbial-neighbours-at-hand
#1
REVIEW
L Cobrado, A Silva-Dias, M M Azevedo, A G Rodrigues
Despite considerable efforts, healthcare-associated infections (HAIs) continue to be globally responsible for serious morbidity, increased costs and prolonged length of stay. Among potentially preventable sources of microbial pathogens causing HAIs, patient care items and environmental surfaces frequently touched play an important role in the chain of transmission. Microorganisms contaminating such high-touch surfaces include Gram-positive and Gram-negative bacteria, viruses, yeasts and parasites, with improved cleaning and disinfection effectively decreasing the rate of HAIs...
June 25, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28643961/bioelectroventing-an-electrochemical-assisted-bioremediation-strategy-for-cleaning-up-atrazine-polluted-soils
#2
Ainara Domínguez-Garay, Jose Rodrigo Quejigo, Ulrike Dörfler, Reiner Schroll, Abraham Esteve-Núñez
The absence of suitable terminal electron acceptors (TEA) in soil might limit the oxidative metabolism of environmental microbial populations. Bioelectroventing is a bioelectrochemical strategy that aims to enhance the biodegradation of a pollutant in the environment by overcoming the electron acceptor limitation and maximizing metabolic oxidation. Microbial electroremediating cells (MERCs) are devices that can perform such a bioelectroventing. We also report an overall profile of the (14) C-ATR metabolites and (14) C mass balance in response to the different treatments...
June 23, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28643082/the-influence-of-solar-power-plants-on-microclimatic-conditions-and-the-biotic-community-in-chilean-desert-environments
#3
Anna Suuronen, Christian Muñoz-Escobar, Anssi Lensu, Markku Kuitunen, Natalia Guajardo Celis, Pablo Espinoza Astudillo, Marcos Ferrú, Andrés Taucare-Ríos, Marcelo Miranda, Jussi V K Kukkonen
The renewable energy sector is growing at a rapid pace in northern Chile and the solar energy potential is one of the best worldwide. Therefore, many types of solar power plant facilities are being built to take advantage of this renewable energy resource. Solar energy is considered a clean source of energy, but there are potential environmental effects of solar technology, such as landscape fragmentation, extinction of local biota, microclimate changes, among others. To be able to minimize environmental impacts of solar power plants, it is important to know what kind of environmental conditions solar power plants create...
June 22, 2017: Environmental Management
https://www.readbyqxmd.com/read/28641137/real-time-pcr-methods-for-the-detection-of-blown-pack-spoilage-causing-clostridium-species-c-estertheticum-c-gasigenes-and-c-ruminantium
#4
Rachael Reid, Catherine M Burgess, Evonne McCabe, Séamus Fanning, Paul Whyte, Joe Kerry, Declan Bolton
A set of real-time PCR methods for the detection of C. estertheticum, C. gasigenes and C. ruminantium, the causative agents of blown pack spoilage (BPS) in vacuum packaged beef, was developed. Robust validation of the sensitivity and specificity was carried out in the three matrices (beef meat drip, wet environmental swabs and dry environmental swabs) as encountered in our testing laboratory and against Clostridium strains (n=76) and non-Clostridium strains (n=36). It was possible to detect 4-5 spores per ml for C...
June 3, 2017: Meat Science
https://www.readbyqxmd.com/read/28639736/primary-secondary-amine-as-a-sorbent-material-in-dispersive-solid-phase-extraction-clean-up-for-the-determination-of-indicator-polychlorinated-biphenyls-in-environmental-water-samples-by-gas-chromatography-with-electron-capture-detection
#5
Yuanming Guo, Hongmei Hu, Tiejun Li, Lijian Xue, Xiaoning Zhang, Zhi Zhong, Yurong Zhang, Yanjian Jin
A simple, rapid, and novel method has been developed and validated for determination of seven indicator polychlorinated biphenyls in water samples by gas chromatography with electron capture detection. 1 L of water samples containing 30 g of anhydrous sodium sulfate was first liquid-liquid extracted with an automated Jipad-6XB vertical oscillator using n-hexane/dichloromethane (1:1, v/v). The concentrated extract was cleaned up by dispersive solid-phase extraction with 100 mg of primary secondary amine as sorbent material...
June 22, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28635641/the-fate-of-pollutants-in-porous-asphalt-pavements-laboratory-experiments-to-investigate-their-potential-to-impact-environmental-health
#6
Susanne M Charlesworth, Jamie Beddow, Ernest O Nnadi
Pervious Paving Systems (PPS) are part of a sustainable approach to drainage in which excess surface water is encouraged to infiltrate through their structure, during which potentially toxic elements, such as metals and hydrocarbons are treated by biodegradation and physical entrapment and storage. However, it is not known where in the PPS structure these contaminants accumulate, which has implications for environmental health, particularly during maintenance, as well as consequences for the recycling of material from the PPS at the end-of-life...
June 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28633418/detecting-and-removing-multiplicative-spatial-bias-in-high-throughput-screening-technologies
#7
Iurie Caraus, Bogdan Mazoure, Robert Nadon, Vladimir Makarenkov
Motivation: Considerable attention has been paid recently to improve data quality in high-throughput screening (HTS) and high-content screening (HCS) technologies widely used in drug development and chemical toxicity research. However, several environmentally- and procedurally-induced spatial biases in these screens decrease measurement accuracy, leading to increased numbers of false positives and false negatives in hit selection. Although effective bias correction methods and software have been developed over the past decades, almost all of these tools have been designed to reduce the effect of additive bias only...
June 15, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28630685/effectiveness-of-surface-coatings-containing-silver-ions-in-bacterial-decontamination-in-a-recovery-unit
#8
Rafael Manuel Ortí-Lucas, Julio Muñoz-Miguel
BACKGROUND: HAIs remain a frequent complication for hospitalised patients and pose a challenge that must be tackled by our health systems. METHODS: Quasi-experimental study. In order to determine the antimicrobial effectiveness of surface coating agents containing silver ions (BactiBlock®) the degree of contamination of several surfaces in two ICU wards was compared. The association between application of Bactiblock® and surface contamination was analysed using a relative risk (RR)...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28619007/whole-genome-sequencing-analyses-of-listeria-monocytogenes-that-persisted-in-a-milkshake-machine-for-a-year-and-caused-illnesses-in-washington-state
#9
Zhen Li, Ailyn Pérez-Osorio, Yu Wang, Kaye Eckmann, William A Glover, Marc W Allard, Eric W Brown, Yi Chen
BACKGROUND: In 2015, in addition to a United States multistate outbreak linked to contaminated ice cream, another outbreak linked to ice cream was reported in the Pacific Northwest of the United States. It was a hospital-acquired outbreak linked to milkshakes, made from contaminated ice cream mixes and milkshake maker, served to patients. Here we performed multiple analyses on isolates associated with this outbreak: pulsed-field gel electrophoresis (PFGE), whole genome single nucleotide polymorphism (SNP) analysis, species-specific core genome multilocus sequence typing (cgMLST), lineage-specific cgMLST and whole genome-specific MLST (wgsMLST)/outbreak-specific cgMLST...
June 15, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28610729/targeted-and-untargeted-high-resolution-mass-approach-for-a-putative-profiling-of-glycosylated-simple-phenols-in-hybrid-grapes
#10
Chiara Barnaba, Eduardo Dellacassa, Giorgio Nicolini, Mattia Giacomelli, Tomas Roman Villegas, Tiziana Nardin, Roberto Larcher
Vitis vinifera is one of the most widespread grapevines around the world representing the raw material for high quality wine production. The availability of more resistant interspecific hybrid vine varieties, developed from crosses between Vitis vinifera and other Vitis species, has generated much interest, also due to the low environmental effect of production. However, hybrid grape wine composition and varietal differences between interspecific hybrids have not been well defined, particularly for the simple phenols profile...
August 2017: Food Research International
https://www.readbyqxmd.com/read/28608621/simultaneous-extraction-and-determination-of-antibiotics-in-soils-using-a-method-based-on-quick-easy-cheap-effective-rugged-and-safe-extraction-and-liquid-chromatography-with-tandem-mass-spectrometry
#11
Minghui Meng, Zeying He, Yaping Xu, Lu Wang, Yi Peng, Xiaowei Liu
The increasing use of antibiotics has caused substantial environmental problems, which proved to be a matter of great concern. The aim of this work was to develop a quick, easy, cheap, effective, rugged and safe method for 20 antibiotics residues in soil. The developed method was based on extraction with acetonitrile and phosphate buffer, clean-up with dispersive solid-phase extraction adsorbent using primary secondary amine, octadecylsilane, followed by liquid chromatography with tandem mass spectrometry determination...
June 13, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28607203/hydrogen-enhanced-cracking-revealed-by-in-situ-micro-cantilever-bending-test-inside-environmental-scanning-electron-microscope
#12
Yun Deng, Tarlan Hajilou, Afrooz Barnoush
To evaluate the hydrogen (H)-induced embrittlement in iron aluminium intermetallics, especially the one with stoichiometric composition of 50 at.% Al, a novel in situ micro-cantilever bending test was applied within an environmental scanning electron microscope (ESEM), which provides both a full process monitoring and a clean, in situ H-charging condition. Two sets of cantilevers were analysed in this work: one set of un-notched cantilevers, and the other set with focused ion beam-milled notch laying on two crystallographic planes: (010) and (110)...
July 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28604908/metal-free-synthesis-of-isatin-oximes-via-radical-coupling-reactions-of-oxindoles-with-t-buono-in-water
#13
Wen-Ting Wei, Wen-Ming Zhu, Wei-Wei Ying, Yi Wu, Yi-Ling Huang, Hongze Liang
A metal-free method for the synthesis of isatin oximes was developed through the radical coupling reactions of oxindoles with t-BuONO. This protocol provides a practical and environmentally benign method for the construction of C-N bonds in water at room temperature without using any other reagents. The advantages of this strategy are its mild reaction conditions and clean procedure.
June 12, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28602191/an-improved-spe-lc-ms-ms-method-for-multiclass-endocrine-disrupting-compound-determination-in-tropical-estuarine-sediments
#14
Tuan Fauzan Tuan Omar, Ahmad Zaharin Aris, Fatimah Md Yusoff, Shuhaimi Mustafa
Estuary sediments are one of the important components of coastal ecosystems and have been regarded as a sink for various types of organic pollutants. Organic pollutants such as endocrine disrupting compounds (EDCs) which have been associated with various environmental and human health effects were detected in the estuary sediment at trace level. Considering various interferences that may exist in the estuarine sediment, a sensitive and selective method, capable of detecting multiclass EDC pollutants at the trace levels, needs to be developed and optimized to be applied for environmental analysis...
October 1, 2017: Talanta
https://www.readbyqxmd.com/read/28600748/teacher-respiratory-health-symptoms-in-relation-to-school-and-home-environment
#15
Shao Lin, Wayne R Lawrence, Ziqiang Lin, Melissa Francois, Iulia A Neamtiu, Qiaoxuan Lin, Eva Csobod, Eugen S Gurzau
PURPOSE: Few studies have evaluated teachers' respiratory health, especially its relationship with school/home environment, and school policies. This study assessed asthma and smoking prevalence among teachers in Romania, teacher's perception and knowledge of the school environment, policies and asthma management, and how school and home environment affected asthma, allergy, and respiratory infection symptoms. METHODS: This cross-sectional study obtained information from 104 Romanian teachers utilizing teacher questionnaire data for Romania only, as part of the Schools Indoor Pollution and Health: Observatory Network in Europe (SINPHONIE) study, a multicenter European research project conducted between 2010 and 2012...
June 9, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28600317/efficacy-of-neutral-electrolyzed-water-for-inactivation-of-human-norovirus
#16
Eric Moorman, Naim Montazeri, Lee-Ann Jaykus
Human norovirus (NoV) is the leading cause of acute gastroenteritis worldwide. Persistence on surfaces and resistance to many conventional disinfectants contribute to widespread transmission of norovirus. We examined the efficacy of neutral electrolyzed water (NEW, pH 7) for inactivation of human NoV GII.4 Sydney in suspension (ASTM method 1052-11) and on stainless steel surfaces (ASTM method 1053-11), with and without an additional soil load. The impact of the disinfectant on viral capsid was assessed using RT-qPCR preceded with an RNase pre-treatment as well as by SDS-PAGE, transmission electron microscopy, and histo-blood group antigen (HBGA) receptor-binding assay...
June 9, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28598349/predicting-water-filter-and-bottled-water-use-in-appalachia-a-community-scale-case-study
#17
Jonas G Levêque, Robert C Burns
A questionnaire survey was conducted in order to assess residents' perceptions of water quality for drinking and recreational purposes in a mid-sized city in northcentral West Virginia. Two logistic regression analyses were conducted in order to investigate the factors that influence bottle use and filter use. Results show that 37% of respondents primarily use bottled water and that 58% use a household filter when drinking from the tap. Respondents with lower levels of environmental concern, education levels, and lower organoleptic perceptions were most likely to perceive health risks from tap water consumption, and were most likely to use bottled water...
June 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/28593542/quality-of-institution-and-the-feg%C3%A2-forest-energy-intensity-and-globalization-environment-relationships-in-sub-saharan-africa
#18
Franklin Amuakwa-Mensah, Philip Kofi Adom
The current share of sub-Saharan Africa in global carbon dioxide emissions is negligible compared to major contributors like Asia, Americas, and Europe. This trend is, however, likely to change given that both economic growth and rate of urbanization in the region are projected to be robust in the future. The current study contributes to the literature by examining both the direct and the indirect impacts of quality of institution on the environment. Specifically, we investigate whether the institutional setting in the region provides some sort of a complementary role in the environment-FEG relationships...
June 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28592358/engineering-waterborne-pseudomonas-aeruginosa-out-of-a-critical-care-unit
#19
Mark I Garvey, Craig W Bradley, Martyn A C Wilkinson, Christina Bradley, Elisabeth Holden
OBJECTIVE: To describe engineering and holistic interventions on water outlets contaminated with Pseudomonas aeruginosa and the observed impact on clinical P. aeruginosa patient isolates in a large Intensive Care Unit (ICU). DESIGN: Descriptive study. SETTING: Queen Elizabeth Hospital Birmingham (QEHB), part of University Hospitals Birmingham (UHB) NHS Foundation Trust is a tertiary referral teaching hospital in Birmingham, UK and provides clinical services to nearly 1 million patients every year...
May 31, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28587297/biogenic-synthesis-of-metal-nanoparticles-using-a-biosurfactant-extracted-from-corn-and-their-antimicrobial-properties
#20
Sergio Gómez-Graña, María Perez-Ameneiro, Xanel Vecino, Isabel Pastoriza-Santos, Jorge Perez-Juste, José Manuel Cruz, Ana Belén Moldes
A new and promising biosurfactant extracted from corn steep liquor has been used for the green synthesis of gold and silver nanoparticles (NPs) in a one-step procedure induced by temperature. Most of the biosurfactants proposed in the literature are produced by pathogenic microorganisms; whereas the biosurfactant used in the current work was extracted from a liquid stream, fermented spontaneously by lactic acid bacteria, which are "generally recognized as safe" (GRAS) microorganisms. The reduction of a gold precursor in the presence of a biosurfactant gives rise to a mixture of nanospheres and nanoplates with distinct optical features...
June 6, 2017: Nanomaterials
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