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https://www.readbyqxmd.com/read/27927920/validation-of-autoclave-protocols-for-the-successful-decontamination-of-category-a-medical-waste-generated-from-the-care-of-patients-with-serious-communicable-diseases
#1
Brian T Garibaldi, Mallory Reimers, Neysa Ernst, Gregory Bova, Elaine Nowakowski, James Bukowski, Brandon C Ellis, Chris Smith, Lauren Sauer, Kim Dionne, Karen C Carroll, Lisa L Maragakis, Nicole M Parrish
In response to the Ebola outbreak in 2014, many hospitals designated specific areas to care for patients with Ebola and other highly infectious diseases. The safe handling of Category A infectious substances is a unique challenge in this environment. One solution is onsite waste treatment with a steam sterilizer or autoclave. The Johns Hopkins Hospital (JHH) installed two pass-through autoclaves in its Biocontainment Unit (BCU). The JHH BCU and The Johns Hopkins Biosafety Level 3 Clinical Microbiology Laboratory designed and validated waste handling protocols with simulated patient trash to ensure adequate sterilization...
December 7, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27914287/an-assessment-of-the-environmental-fate-of-mercury-species-in-highly-polluted-brownfields-by-means-of-thermal-desorption
#2
M Rumayor, J R Gallego, E Rodríguez-Valdés, M Díaz-Somoano
High contents of mercury (Hg) have been found in old mining-metallurgy sites occurring a widespread contamination and degradation of the land. The ability to identify the Hg species present in these areas is essential to clarify fate of Hg and its bioavailability and additionally, to be able to parameterize remediation techniques based on thermal desorption in order to carry out a full-scale decontamination of the land. This study has proven the usefulness of a thermal programmed desorption procedure (Hg-TPD) for identifying Hg species in contaminated samples related to mining-metallurgy activities...
November 25, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27912317/production-of-bacillus-amyloliquefaciens-og-and-its-metabolites-in-renewable-media-valorisation-for-biodiesel-production-and-p-xylene-decontamination
#3
Augusto Etchegaray, François Coutte, Gabrielle Chataigné, Max Béchet, Ramon H Z Dos Santos, Valérie Leclère, Philippe Jacques
Biosurfactants are important in many areas; however, costs impede large-scale production. This work aimed to develop a global sustainable strategy for the production of biosurfactants by a novel strain of Bacillus amyloliquefaciens. Initially, Bacillus sp. strain 0G was renamed B. amyloliquefaciens subsp. plantarum (syn. Bacillus velezensis) after analysis of the gyrA and gyrB DNA sequences. Growth in modified Landy's medium produced 3 main recoverable metabolites: surfactin, fengycin, and acetoin, which promote plant growth...
September 2, 2016: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/27910909/the-disinfection-characteristics-of-ebola-virus-outbreak-variants
#4
Bradley W M Cook, Todd A Cutts, Aidan M Nikiforuk, Anders Leung, Darwyn Kobasa, Steven S Theriault
The recent Ebola virus outbreak in West Africa has forced experts to re-evaluate their understanding of how to best disinfect areas contaminated with infectious bodily fluids. Recent research has found that Ebola virus remains viable in blood for 7-10 days making appropriate disinfection crucial to infection control. We sought to determine if the three most important outbreak variants of Zaire ebolavirus (Mayinga, Kikwit and Makona) exhibit separate phenotypes when challenged with a range of sodium hypochlorite (NaOCl) concentrations or 70% ethanol (EtOH) at average West African temperature...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27889181/brazilian-cerrado-soil-reveals-an-untapped-microbial-potential-for-unpretreated-polyethylene-biodegradation
#5
Julianna Peixoto, Luciano P Silva, Ricardo H Krüger
Discarded PE-based products pose a social and environmental threat because of their recalcitrance to degradation, a consequence of the unique set of PE's physicochemical properties. In this study we isolated nine novel PE-degrading bacteria from plastic debris found in soil of the savanna-like Brazilian Cerrado. These bacterial strains from the genera Comamonas, Delftia, and Stenotrophomonas showed metabolic activity and cellular viability after a 90-day incubation with PE as the sole carbon source. ATR/FTIR indicated that biodegraded PE undergone oxidation, vinylene formation, chain scission, among other chemical changes...
November 14, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27886986/decontamination-and-recovery-of-a-nuclear-facility-to-allow-continued-operation
#6
Josh Cavaghan
A power supply failure caused a loss of power to key ventilation systems in an operating nuclear facility. The in-cell depression was lost, which led to an egress of activity through prepared areas and into the normal operating areas. After an initial programme of radiological monitoring to quantify and categorise the activity in the operating areas, a plan was developed for the decontamination and remediation of the plant. The scope of the recovery plan was substantial and featured several key stages. The contamination was almost entirely (137)Cs, reflecting the α:β/γ ratio for the facility...
November 24, 2016: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27884531/using-groundwater-age-distributions-to-understand-changes-in-methyl-tert-butyl-ether-mtbe-concentrations-in-ambient-groundwater-northeastern-united-states
#7
Bruce D Lindsey, Joseph D Ayotte, Bryant C Jurgens, Leslie A Desimone
Temporal changes in methyl tert-butyl ether (MtBE) concentrations in groundwater were evaluated in the northeastern United States, an area of the nation with widespread low-level detections of MtBE based on a national survey of wells selected to represent ambient conditions. MtBE use in the U.S. peaked in 1999 and was largely discontinued by 2007. Six well networks, each representing specific areas and well types (monitoring or supply wells), were each sampled at 10year intervals between 1996 and 2012. Concentrations were decreasing or unchanged in most wells as of 2012, with the exception of a small number of wells where concentrations continue to increase...
November 21, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27878901/radioactive-cesium-and-potassium-in-cattle-living-in-the-zone-in-preparation-for-the-lifting-of-the-evacuation-order-of-the-fukushima-nuclear-accident
#8
Itaru Sato, Jun Sasaki, Hiroshi Satoh, Takahisa Murata, Kumiko Otani, Keiji Okada
To contribute to the reconstruction of livestock industry in Fukushima, radioactive cesium ((134) Cs, (137) Cs) and potassium ((4) °K) were measured in various tissues of beef cattle living in an area where the evacuation order will be lifted in the near future. Radioactive cesium concentration was less than 100 Bq/kg in most of the samples. Skeletal muscles and kidney had the highest concentrations of radioactive cesium, whereas the liver was lowest among samples, excepting blood. Radioactive cesium concentration in the sirloin, tenderloin and top round was significantly higher than that in the neck muscle...
November 23, 2016: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/27845748/validation-of-contamination-control-in-rapid-transfer-port-chambers-for-pharmaceutical-manufacturing-processes
#9
Shih-Cheng Hu, Angus Shiue, Han-Yang Liu, Rong-Ben Chiu
There is worldwide concern with regard to the adverse effects of drug usage. However, contaminants can gain entry into a drug manufacturing process stream from several sources such as personnel, poor facility design, incoming ventilation air, machinery and other equipment for production, etc. In this validation study, we aimed to determine the impact and evaluate the contamination control in the preparation areas of the rapid transfer port (RTP) chamber during the pharmaceutical manufacturing processes. The RTP chamber is normally tested for airflow velocity, particle counts, pressure decay of leakage, and sterility...
November 12, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27835846/soil-amendments-effects-on-radiocesium-translocation-in-forest-soils
#10
Yuki Sugiura, Hajime Ozawa, Mitsutoshi Umemura, Chisato Takenaka
We conducted an experiment to investigate the potential of phytoremediation by soil amendments in a forest area. To desorb radiocesium ((137)Cs) from variable charges in the soil, ammonium sulfate (NH4(+)) and elemental sulfur (S) (which decrease soil pH) were applied to forest soil collected from contaminated area at a rate of 40 and 80 g/m(2), respectively. A control condition with no soil treatment was also considered. We defined four groups of aboveground conditions: planted with Quercus serrata, planted with Houttuynia cordata, covered with rice straw as litter, and unplanted/uncovered (control)...
December 2016: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27790383/mass-casualty-decontamination-guidance-and-psychosocial-aspects-of-cbrn-incident-management-a-review-and-synthesis
#11
Holly Carter, Richard Amlôt
INTRODUCTION: Mass casualty decontamination is an intervention employed by first responders at the scene of an incident involving noxious contaminants.  Many countries have sought to address the challenge of decontaminating large numbers of affected casualties through the provision of rapidly deployable temporary showering structures, with accompanying decontamination protocols.  In this paper we review decontamination guidance for emergency responders and associated research evidence, in order to establish to what extent psychosocial aspects of casualty management have been considered within these documents...
September 27, 2016: PLoS Currents
https://www.readbyqxmd.com/read/27790381/mass-casualty-decontamination-in-a-chemical-or-radiological-nuclear-incident-further-guiding-principles
#12
Holly Carter, Richard Amlôt, Richard Williams, G James Rubin, John Drury
This short report presents a response to an article written by Cibulsky et al. (2016). The paper by Cibulsky et al. presents a useful and timely overview of the evidence surrounding the technical and operational aspects of mass casualty decontamination. It identifies three priority targets for future research, the third of which is how casualties' needs can be met in ways that best support compliance with and effectiveness of casualty decontamination. While further investigation into behavioural, communication and privacy issues during mass decontamination is warranted, there is now a substantial body of research in this area which is not considered in detail in the succinct summary provided by Cibulsky et al...
September 15, 2016: PLoS Currents
https://www.readbyqxmd.com/read/27777756/first-hospital-outbreak-of-the-globally-emerging-candida-auris-in-a-european-hospital
#13
Silke Schelenz, Ferry Hagen, Johanna L Rhodes, Alireza Abdolrasouli, Anuradha Chowdhary, Anne Hall, Lisa Ryan, Joanne Shackleton, Richard Trimlett, Jacques F Meis, Darius Armstrong-James, Matthew C Fisher
BACKGROUND: Candida auris is a globally emerging multidrug resistant fungal pathogen causing nosocomial transmission. We report an ongoing outbreak of C. auris in a London cardio-thoracic center between April 2015 and July 2016. This is the first report of C. auris in Europe and the largest outbreak so far. We describe the identification, investigation and implementation of control measures. METHODS: Data on C. auris case demographics, environmental screening, implementation of infection prevention/control measures, and antifungal susceptibility of patient isolates were prospectively recorded then analysed retrospectively...
2016: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/27760910/decontamination-of-the-activation-product-based-on-a-legal-revision-of-the-cyclotron-vault-room-on-the-non-self-shield-compact-medical-cyclotron
#14
Isao Komiya, Yoshiyuki Umezu, Toshioh Fujibuchi, Kazumasa Nakamura, Shingo Baba, Hiroshi Honda
The non-self-shield compact medical cyclotron and the cyclotron vault room were in operation for 27 years. They have now been decommissioned. We efficiently implemented a technique to identify an activation product in the cyclotron vault room. Firstly, the distribution of radioactive concentrations in the concrete of the cyclotron vault room was estimated by calculation from the record of the cyclotron operation. Secondly, the comparison of calculated results with an actual measurement was performed using a NaI scintillation survey meter and a high-purity germanium detector...
2016: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/27755474/selective-digestive-decontamination-attenuates-organ-dysfunction-in-critically-ill-burn-patients
#15
Lucía López-Rodríguez, Miguel A de la Cal, Paloma García-Hierro, Raquel Herrero, Judith Martins, Hendrick K F van Saene, José A Lorente
OBJECTIVE: To evaluate whether selective decontamination of the digestive tract (SDD) attenuates organ dysfunction in critically ill burn patients. BACKGROUND: The effect of SDD on the development and progression of organ dysfunction, as an important determinant of mortality in burned patients, is still unknown. We asked whether organ dysfunction is mitigated by treatment with SDD. METHODS: Patients with burns >20% of total body surface or suspected inhalation injury from a randomized placebo-controlled trial were analyzed to determine the relationship between treatment received (placebo or SDD) and the severity of organ dysfunction as measured by the area under the curve of the Sequential Organ Failure Assessment (SOFA) score (and its individual components) from day 1 to day 7 of admission...
November 2016: Shock
https://www.readbyqxmd.com/read/27750163/capillary-microextraction-a-new-method-for-sampling-methamphetamine-vapour
#16
M V Nair, G M Miskelly
Clandestine laboratories pose a serious health risk to first responders, investigators, decontamination companies, and the public who may be inadvertently exposed to methamphetamine and other chemicals used in its manufacture. Therefore there is an urgent need for reliable methods to detect and measure methamphetamine at such sites. The most common method for determining methamphetamine contamination at former clandestine laboratory sites is selected surface wipe sampling, followed by analysis with gas chromatography-mass spectrometry (GC-MS)...
October 3, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27710823/facile-template-free-fabrication-of-iron-manganese-bimetal-oxides-nanospheres-with-excellent-capability-for-heavy-metals-removal
#17
Zhipan Wen, Yalei Zhang, Sheng Guo, Rong Chen
Iron manganese bimetal oxides (IMBO) nanospheres were synthesized via a facile and environmentally friendly template-free approach. The obtained IMBO with large surface area and abundant surface functional groups exhibited excellent performance for heavy metals removal from aqueous solution, with the maximum adsorption capacities of As(V) and Cr(VI) were 132.77mg/g and 105.96mg/g, respectively. The adsorption mechanism study confirmed that except for electrostatic attraction, both surface hydroxyl group (OH(-)) and carbonate group (CO3(2-)) simultaneously played a key role in the ion-exchange process with As(V) and Cr(VI) species, which finally formed inner-sphere surface complexes on the interface of IMBO...
September 14, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27684593/depletion-of-pentachlorophenol-in-soil-microcosms-with-byssochlamys-nivea-and-scopulariopsis-brumptii-as-detoxification-agents
#18
Nejla Hechmi, Luciano Bosso, Leila El-Bassi, Rosalia Scelza, Antonino Testa, Naceur Jedidi, Maria A Rao
Pentachlorophenol (PCP) is a toxic compound which is widely used as a wood preservative product and general biocide. It is persistent in the environment and has been classified as a persistent organic pollutant to be reclaimed in many countries. Fungal bioremediation is an emerging approach to rehabilitating areas fouled by recalcitrant xenobiotics. In the present study, we isolated two fungal strains from an artificially PCP-contaminated soil during a long-term bioremediation study and evaluated their potential as bioremediation agents in depletion and detoxification of PCP in soil microcosms...
December 2016: Chemosphere
https://www.readbyqxmd.com/read/27668545/verification-of-frequency-in-species-of-nontuberculous-mycobacteria-in-kermanshah-drinking-water-supplies-using-the-pcr-sequencing-method
#19
Parviz Mohajeri, Laya Yazdani, Abdolrazagh Hashemi Shahraki, Amirhoshang Alvandi, Sara Atashi, Abbas Farahani, Ali Almasi, Mansour Rezaei
BACKGROUND: Nontuberculous mycobacteria are habitants of environment, especially in aquatic systems. Some of them cause problems in immunodeficient patients. Over the last decade, 16S rRNA gene sequencing was established in 45 novel species of nontuberculous mycobacteria. Experiences revealed that this method underestimates the diversity, but does not distinguish between some of mycobacterium subsp. To recognize emerging rapidly growing mycobacteria and identify their subsp, rpoB gene sequencing has been developed...
September 26, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27630159/report-of-decontamination-at-tominari-elementary-school
#20
S Katsumi
On 19 April 2011, the Ministry of Education, Culture, Sports, Science, and Technology designated 13 elementary schools, including Tominari Elementary School in Date city, as high-dose schools that needed to restrict outdoor activities due to the effects of the accident at Fukushima Daiichi nuclear power plant. Approximately 1 week later, the municipal government took action to remove the topsoil from the school grounds, and the prohibition of outdoor activities at Tominari Elementary School was lifted. The school staff continued to work on decontaminating the surrounding areas using high-pressure washers and brushes...
September 14, 2016: Annals of the ICRP
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