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https://www.readbyqxmd.com/read/28441417/minimum-lethal-concentration-of-sodium-hypochlorite-for-the-amphibian-pathogen-batrachochytrium-dendrobatidis
#1
Matthew H Becker, Brian Gratwicke
Sodium hypochlorite (NaOCl) is the active ingredient in household bleach and is commonly used as a disinfectant to clean equipment contaminated by the amphibian pathogen Batrachochytrium dendrobatidis (Bd) in lab husbandry and field studies. We conducted a series of replicated exposure trials using a single Global Pandemic Lineage Bd isolate from Panama (JEL 310) and concentrations of NaOCl ranging from 0.006% to 0.6% for exposure times ranging from 30 seconds to 15 minutes to determine the minimum lethal concentration of NaOCl for this isolate of Bd...
2017: PloS One
https://www.readbyqxmd.com/read/28438425/mobile-laboratories-an-innovative-and-efficient-solution-for-radiological-characterization-of-sites-under-or-after-decommissioning
#2
V Goudeau, B Daniel, D Dubot
During the operation and the decommissioning of a nuclear site the operator must assure the protection of the workers and the environment. It must furthermore identify and classify the various wastes, while optimizing the associated costs. At all stages of the decommissioning radiological measurements are performed to determine the initial situation, to monitor the demolition and clean-up, and to verify the final situation. Radiochemical analysis is crucial for the radiological evaluation process to optimize the clean-up operations and to the respect limits defined with the authorities...
April 21, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28436232/safety-performance-and-satisfaction-outcomes-in-the-operating-room-a-literature-review
#3
Anjali Joseph, Sara Bayramzadeh, Zahra Zamani, Bill Rostenberg
OBJECTIVE: This review of empirical literature focuses on the design of operating rooms (ORs) by investigating the physical environmental features of ORs associated with patient and staff outcomes. BACKGROUND: Many ORs built more than 30 years ago remain operational today. However, most are inadequately designed to handle the equipment, processes, and people that a contemporary OR needs to accommodate. However, the evidence base for designing ORs has been sorely lacking, and little guidance exists on how OR design can improve safety and performance outcomes...
January 1, 2017: HERD
https://www.readbyqxmd.com/read/28435877/design-and-function-of-biomimetic-multilayer-water-purification-membranes
#4
Shengjie Ling, Zhao Qin, Wenwen Huang, Sufeng Cao, David L Kaplan, Markus J Buehler
Multilayer architectures in water purification membranes enable increased water throughput, high filter efficiency, and high molecular loading capacity. However, the preparation of membranes with well-organized multilayer structures, starting from the nanoscale to maximize filtration efficiency, remains a challenge. We report a complete strategy to fully realize a novel biomaterial-based multilayer nanoporous membrane via the integration of computational simulation and experimental fabrication. Our comparative computational simulations, based on coarse-grained models of protein nanofibrils and mineral plates, reveal that the multilayer structure can only form with weak interactions between nanofibrils and mineral plates...
April 2017: Science Advances
https://www.readbyqxmd.com/read/28435190/prevalence-of-salmonella-in-poultry-processing-environments-in-wet-markets-in-penang-and-perlis-malaysia
#5
Hafiz Nidaullah, Nadarajan Abirami, Ahamed Kamal Shamila-Syuhada, Li-Oon Chuah, Huda Nurul, Teik Pei Tan, Farah Wahida Zainal Abidin, Gulam Rusul
AIM: The aim of this study was to determine the prevalence of various Salmonella serotypes in chickens, carcass contact surfaces as well as environmental samples collected from wet markets and small scale processing plant. MATERIALS AND METHODS: A total of 182 poultry and environmental samples were collected at random on separate occasions from wet markets and small scale processing plant, during the period of October 2014 to July 2015 in Penang and Perlis, Malaysia...
March 2017: Veterinary World
https://www.readbyqxmd.com/read/28420487/personal-protective-equipment-solution-for-uk-military-medical-personnel-working-in-an-ebola-virus-disease-treatment-unit-in-sierra-leone
#6
P Reidy, T Fletcher, C Shieber, J Shallcross, H Towler, M Ping, L Kenworthy, N Silman, E Aarons
The combination of personal protective equipment (PPE) together with donning and doffing protocols was designed to protect British and Canadian military medical personnel in the Kerry Town Ebola Treatment Unit (ETU) in Sierra Leone. The PPE solution was selected to protect medical staff from infectious risks, notably Ebola virus, and chemical (hypochlorite) exposure. PPE maximized dexterity, enabled personnel to work in hot temperatures for periods of up to 2h, protected mucosal membranes when doffing outer layers, and minimized potential contamination of the doffing area with infectious material by reducing the requirement to spray PPE with hypochlorite...
March 18, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28401390/enzyme-based-solutions-for-textile-processing-and-dye-contaminant-biodegradation-a-review
#7
Shahzad Ali Shahid Chatha, Muhammad Asgher, Hafiz M N Iqbal
The textile industry, as recognized conformist and stake industry in the world's economy, is facing serious environmental challenges. In numerous industries, in practice, various chemical-based processes from initial sizing to final washing are fascinating harsh environment concerns. Some of these chemicals are corrosive to equipment and cause serious damage itself. Therefore, in the twenty-first century, chemical and allied industries quest a paradigm transition from traditional chemical-based concepts to a greener, sustainable, and environmentally friendlier catalytic alternative, both at the laboratory and industrial scales...
April 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28391007/polychlorinated-naphthalenes-pcns-in-food-and-humans
#8
REVIEW
Alwyn Fernandes, Martin Rose, Jerzy Falandysz
Polychlorinated naphthalenes (PCNs) are legacy contaminants that are listed by the Stockholm convention, initially for reduction of inadvertent production and ultimately, for elimination. They originate through releases from older electrical equipment, inadvertent contamination in industrial chemicals and from combustion processes such as incineration. Recent advances in measurement techniques have allowed a greater characterisation of PCN occurrence, yielding more specific data including individual PCN congener concentrations...
April 6, 2017: Environment International
https://www.readbyqxmd.com/read/28383604/microbiological-contamination-in-digital-radiography-evaluation-at-the-radiology-clinic-of-an-educational-institution
#9
Cristiana P Malta, Naiana Nl Damasceno, Rosangela A Ribeiro, Carolina Sf Silva, Karina L Devito
The aim of this study was to evaluate the contamination rate of intra and extraoral digital X ray equipment in a dental radiology clinic at a public educational institution. Samples were collected on three different days, at two times in the day: in the morning, before attending patients, and at the end of the day, after appointment hours and before cleaning and disinfection procedures. Samples were collected from the periapical X-ray machine (tube head, positioning device, control panel and activator button), the panoramic X- ray machine (temporal support, bite block, control panel and activator button), the intraoral digital system (sensor), and the digital system computers (keyboard and mouse)...
December 2016: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28381304/evaluation-of-biosecurity-measures-to-prevent-indirect-transmission-of-porcine-epidemic-diarrhea-virus
#10
Yonghyan Kim, My Yang, Sagar M Goyal, Maxim C-J Cheeran, Montserrat Torremorell
BACKGROUND: The effectiveness of biosecurity methods to mitigate the transmission of porcine epidemic diarrhea virus (PEDV) via farm personnel or contaminated fomites is poorly understood. This study was undertaken to evaluate the effectiveness of biosecurity procedures directed at minimizing transmission via personnel following different biosecurity protocols using a controlled experimental setting. RESULTS: PEDV RNA was detected from rectal swabs of experimentally infected (INF) and sentinel pigs by real-time reverse transcription polymerase chain reaction (rRT-PCR)...
April 5, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28377005/risks-from-ebolavirus-discharge-from-hospitals-to-sewer-workers
#11
Charles N Haas, Taylor Rycroft, Kyle Bibby, Leonard Casson
  Current World Health Organization and Centers for Disease Control and Prevention guidance for the disposal of liquid waste from patients undergoing treatment for Ebola virus disease at hospitals in the U.S. is to manage patient excreta as ordinary wastewater without pretreatment. The potential for Ebolavirus transmission via liquid waste discharged into the wastewater environment is currently unknown, however. Possible worker inhalation exposure to Ebolavirus-contaminated aerosols in the sewer continues to be a concern within the wastewater treatment community...
April 1, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28365551/microwave-drying-remediation-of-petroleum-contaminated-drill-cuttings
#12
Irineu Petri Júnior, André Leibsohn Martins, Carlos H Ataíde, Cláudio R Duarte
The oil reservoir drilling phase generates contaminated cuttings with oil formation itself. These cuttings must be subjected to a decontamination process before being disposed of in the environment. Several technologies are cited in literature for the remediation of soil contaminated with oil or diesel, but none have been reported to remedy drill cuttings contaminated with oil from reservoir. The reservoir drill cuttings are a problem because its discharge is not allowed. The drying technology using microwave has shown promise in the decontamination of cuttings with non-aqueous base drilling fluid, conciliating good robustness and high removal efficiency...
March 30, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28358486/separation-of-semiconducting-carbon-nanotubes-for-flexible-and-stretchable-electronics-using-polymer-removable-method
#13
Ting Lei, Igor Pochorovski, Zhenan Bao
Electronics that are soft, conformal, and stretchable are highly desirable for wearable electronics, prosthetics, and robotics. Among the various available electronic materials, single walled carbon nanotubes (SWNTs) and their network have exhibited high mechanical flexibility and stretchability, along with comparable electrical performance to traditional rigid materials, e.g. polysilicon and metal oxides. Unfortunately, SWNTs produced en masse contain a mixture of semiconducting (s-) and metallic (m-) SWNTs, rendering them unsuitable for electronic applications...
March 30, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28355413/maintenance-of-low-pressure-carburising-furnaces-a-source-of-pah-exposure
#14
Catherine Champmartin, Fanny Jeandel, Hubert Monnier
Objectives: Low-pressure carburising is a new technology used to harden steel; the process has been shown to be a source of considerable polycyclic aromatic hydrocarbons (PAH) pollution. Some PAH are carcinogenic, and activities such as furnace maintenance may thus represent a risk to workers. Occupational exposure during these operations should therefore be assessed. Methods: In this study, the PAH-related carcinogenic risk associated with furnace maintenance was assessed by monitoring atmospheric levels of benzo[a]pyrene (BaP), a representative marker, alongside urinary levels of 3-hydroxybenzo[a]pyrene (3-OHBaP), one of its metabolites...
January 9, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28346255/splash-safety-during-dermatologic-procedures-among-us-dermatology-residents
#15
Dorota Z Korta, Lance W Chapman, Patrick K Lee, Kenneth G Linden
BACKGROUND: Dermatologists are at potential risk of acquiring infections from contamination of the mucous membranes by blood and body fluids. However, there are little data on splash safety during procedural dermatology. OBJECTIVE: To determine dermatology resident perceptions about splash risk during dermatologic procedures and to quantify the rate of protective equipment use. METHODS: An anonymous on-line survey was sent to 108 United States ACGME-approved dermatology residency programs assessing frequency of facial protection during dermatologic procedures, personal history of splash injury, and, if applicable, reasons for not always wearing facial protection...
March 23, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28341192/potential-infection-control-risks-associated-with-ultrasound-equipment-a-bacterial-perspective
#16
Susan Campbell Westerway, Jocelyne M Basseal, Adam Brockway, Jon A Hyett, Dee A Carter
Ultrasound equipment used in trans-abdominal (TA) and trans-vaginal (TV) examination may carry bacterial contamination and pose risks to infection control during ultrasound examination. We aimed to describe the prevalence of bacterial contamination on ultrasound probes, gel, machine keyboard and cords and examined the effectiveness of low- and high-level disinfection techniques. This study was performed at a public hospital and a private practice. A total of 171 swabs were analyzed and bacterial species were identified using matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) analysis and polymerase chain reaction (PCR)...
February 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28340959/molecular-detection-of-clostridium-difficile-on-inert-surfaces-from-a-costa-rican-hospital-during-and-after-an-outbreak
#17
Luisa Morales, César Rodríguez, María Del Mar Gamboa-Coronado
BACKGROUND: Hospital transmission of Clostridium difficile is fostered by contamination of surfaces and medical equipment with spores highly resistant to disinfectants and regular cleaning procedures. Despite the outbreaks and fatalities that C difficile causes, its epidemiology has not been studied in hospitals from middle- and low-income countries. To tackle this knowledge gap, the detection frequency of C difficile DNA on inert surfaces of a major Costa Rican hospital during and after an outbreak was compared...
December 1, 2016: American Journal of Infection Control
https://www.readbyqxmd.com/read/28332639/evaluation-of-the-bacteriological-quality-of-raw-cow-s-milk-at-various-stages-of-the-milk-production-chain-on-farms-in-algeria-%C3%A2-oie-world-organisation-for-animal-health-2016
#18
M Hamiroune, A Berber, S Boubekeur
This study evaluates hygiene practices on 53 dairy farms in the Jijel and Blida regions of Algeria. A survey questionnaire was drawn up covering milking conditions and cleaning of the equipment. In parallel, bacteriological analyses were carried out to estimate the rate, source and development of bacterial contamination in raw milk produced on the farm. In addition, screening was performed to detect the presence of inhibitor residues. The results of the survey revealed poor livestock conditions and milking practices that could explain the presence of bacteria in cow's milk...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332638/water-quality-in-turkey-farms-in-khemisset-morocco-and-potential-risk-factors
#19
A El Allaoui, F Rhazi Filali, A Derouich
The objectives of this study were to assess the microbiological and physical/chemical quality of water in broiler turkey farms in the province of Khemisset (north-western Morocco) and, based on a questionnaire, to ascertain potential risk factors for contamination of drinking water with faecal coliforms. A total of 80 samples were collected and analysed in 20 farms (four from each farm). At the main inlet to the water line at the entrance to each turkey house, 100% of the samples were of unacceptable quality in terms of faecal coliforms, Escherichia coli, faecal streptococci, sulphitereducing anaerobes and enterococci...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28319476/anesthesia-in-patients-with-infectious-disease-caused-by-multi-drug-resistant-bacteria
#20
Sharon Einav, Yonit Wiener-Well
PURPOSE OF REVIEW: Up to 50% of specific bacterial strains in healthcare admission facilities are multidrug-resistant organisms (MDROs). Involvement of anesthesiologists in management of patients carrying/at risk of carrying MDROs may decrease transmission in the Operating Room (OR). RECENT FINDINGS: Anesthesiologists, their work area and tools have all been implicated in MDRO outbreaks. Causes include contamination of external ventilation circuits and noncontribution of filters to prevention, inappropriate decontamination procedures for nondisposable equipment (e...
March 17, 2017: Current Opinion in Anaesthesiology
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