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https://www.readbyqxmd.com/read/28336856/a-novel-heterostructure-of-bioi-nanosheets-anchored-onto-mwcnts-with-excellent-visible-light-photocatalytic-activity
#1
Shijie Li, Shiwei Hu, Kaibing Xu, Wei Jiang, Jianshe Liu, Zhaohui Wang
Developing efficient visible-light-driven (VLD) photocatalysts for environmental decontamination has drawn significant attention in recent years. Herein, we have reported a novel heterostructure of multiwalled carbon nanotubes (MWCNTs) coated with BiOI nanosheets as an efficient VLD photocatalyst, which was prepared via a simple solvothermal method. The morphology and structure were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (DRS), and specific surface area measurements...
January 23, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28334443/pollutant-ground-concentrations-of-nonneutrally-buoyant-particles
#2
Alon Mandel, Eli Stern, Amos Ullmann, Neima Brauner
A methodology is suggested for the estimation of the mass density and the cumulative ground deposition of a nonvolatile, nonneutrally buoyant, air pollutant (liquid or solid) released from a polluted column (following an explosion caused during routine operation in, e.g., the chemical industry or due to any kind of hostile act) and deposited on the ground via gravitational settling. In many cases, the deposited mass due to gravitational settling constitutes a significant fraction of the original inventory released from the source...
March 23, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28330389/radiation-doses-and-associated-risk-from-the-fukushima-nuclear-accident
#3
Tetsuo Ishikawa
The magnitude of dose due to the Fukushima Daiichi Accident was estimated by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 2013 report published in April 2014. Following this, the UNSCEAR white paper, which comprises a digest of new information for the 2013 Fukushima report, was published in October 2015. Another comprehensive report on radiation dose due to the accident is the International Atomic Energy Agency (IAEA) report on the Fukushima Daiichi Accident published in August 2015...
March 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/28324837/status-of-pesticides-pollution-in-tanzania-a-review
#4
REVIEW
Raheli Elibariki, Mihayo Musabila Maguta
Various studies have been conducted in Tanzania to assess the magnitude of pesticides pollution associated with pesticides application, storage, disposal as well as knowledge of farmers on pesticides handling. The studies analysed samples from different matrices covering vegetation, biota, water, sediments and soil. The objective of this review was to summarise the results of pesticides residues reported in different components of the environment to give a clear picture of pesticides pollution status in the country for law enforcement as well as for taking precaution measures...
March 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28319476/anesthesia-in-patients-with-infectious-disease-caused-by-multi-drug-resistant-bacteria
#5
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
https://www.readbyqxmd.com/read/28278063/assessment-of-personal-airborne-exposures-and-surface-contamination-from-x-ray-vaporization-of-beryllium-targets-at-the-national-ignition-facility
#6
Samuel Y Paik, Patrick M Epperson, Kenneth M Kasper
This study presents air and surface sampling data collected over the first two years since beryllium was introduced as a target material at the National Ignition Facility. Over this time, 101 experiments with beryllium-containing targets were executed. The data provides an assessment of current conditions in the facility and a baseline for future impacts as new, reduced regulatory limits for beryllium are being proposed by both the Occupational Safety and Health Administration and Department of Energy. This study also investigates how beryllium deposits onto exposed surfaces as a result of x-ray vaporization and the effectiveness of simple decontamination measures in reducing the amount of removable beryllium from a surface...
February 28, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28208260/simultaneous-enhancement-of-bioactivity-and-stability-of-laccase-by-cu-2-paa-ppega-matrix-for-efficient-biosensing-and-recyclable-decontamination-of-pyrocatechol
#7
Tao Chen, Yuanhong Xu, Zhi Peng, Aihua Li, Jingquan Liu
Simultaneously enhancing the catalytic bioactivity and stability of enzyme is still an intractable issue in the enzymatic study. Herein, a facile and effective approach was designed to immobilize and modify laccase on a Cu(2+)-adsorbed pyrene-terminated block copolymer [poly(acrylic acid)/poly(poly(ethylene glycol) acrylate)] (PAA/PPEGA), which was prepared via well-controlled reversible addition-fragmentation chain transfer polymerization. PAA provided the supporting matrix for firm immobilization of Cu(2+), an enzyme bioactivity inducer, onto the microstructure of laccase, while avoiding any contamination of the heavy metal Cu(2+) into the following application system...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28191745/comparison-of-sampling-methods-to-recover-germinated-bacillus-anthracis-and-bacillus-thuringiensis-endospores-from-surface-coupons
#8
Tiffany M Mott, Jennifer L Shoe, Melissa Hunter, Amber M Woodson, Kristen A Fritts, Christopher P Klimko, Avery V Quirk, Susan L Welkos, Christopher K Cote
AIMS: In an attempt to devise decontamination methods that are both effective and minimally detrimental to the environment, we evaluated germination-induction as an enhancement to strategies for Bacillus anthracis spore decontamination. To determine an optimal method for the recovery of germinating spores from different matrices it was critical to ensure that the sampling procedures did not negatively impact the viability of the germinating spores possibly confounding the results and downstream analyses of field trial data...
February 12, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28161316/modeling-watershed-scale-137-cs-transport-in-a-forested-catchment-affected-by-the-fukushima-dai-ichi-nuclear-power-plant-accident
#9
Lezhang Wei, Tsuyoshi Kinouchi, Kazuya Yoshimura, Mark L Velleux
The Fukushima nuclear accident in 2011 resulted in (137)Cs contamination of large areas in northeast Japan. A watershed-scale (137)Cs transport model was developed and applied to a forested catchment in Fukushima area. This model considers (137)Cs wash-off from vegetation, movement through soils, and transport of dissolved and particulate (137)Cs adsorbed to clay, silt and sand. Comparisons between measurements and simulations demonstrated that the model well reproduced (137)Cs concentrations in the stream fed from the catchment...
February 2, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28155883/first-on-site-true-gamma-ray-imaging-spectroscopy-of-contamination-near-fukushima-plant
#10
Dai Tomono, Tetsuya Mizumoto, Atsushi Takada, Shotaro Komura, Yoshihiro Matsuoka, Yoshitaka Mizumura, Makoto Oda, Toru Tanimori
We have developed an Electron Tracking Compton Camera (ETCC), which provides a well-defined Point Spread Function (PSF) by reconstructing a direction of each gamma as a point and realizes simultaneous measurement of brightness and spectrum of MeV gamma-rays for the first time. Here, we present the results of our on-site pilot gamma-imaging-spectroscopy with ETCC at three contaminated locations in the vicinity of the Fukushima Daiichi Nuclear Power Plants in Japan in 2014. The obtained distribution of brightness (or emissivity) with remote-sensing observations is unambiguously converted into the dose distribution...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28139533/amitraz-an-underrecognized-poison-a-systematic-review
#11
REVIEW
Sahajal Dhooria, Ritesh Agarwal
BACKGROUND & OBJECTIVES: Amitraz is a member of formamidine family of pesticides. Poisoning from amitraz is underrecognized even in areas where it is widely available. It is frequently misdiagnosed as organophosphate poisoning. This systematic review provides information on the epidemiology, toxicokinetics, mechanisms of toxicity, clinical features, diagnosis and management of amitraz poisoning. METHODS: Medline and Embase databases were searched systematically (since inception to January 2014) for case reports, case series and original articles using the following search terms: 'amitraz', 'poisoning', 'toxicity', 'intoxication' and 'overdose'...
September 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28108022/evaluation-of-a-method-for-removing-cesium-and-reducing-the-volume-of-leaf-litter-from-broad-leaved-trees-contaminated-by-the-fukushima-daiichi-nuclear-accident-during-the-great-east-japan-earthquake
#12
Shigeki Harada, Mitsunori Yanagisawa
The town of Marumori in southern Miyagi Prefecture borders on Fukushima Prefecture, and following the accident at the Fukushima Daiichi nuclear power plant, there were concerns about cesium deposition in forested areas. One of the authors of this paper has continually surveyed leaf litter from the forested areas. As leaf litter may be a source of cesium contamination from the forest to downstream areas, we considered a simplified version of wet oxidation, a method previously presented by one of the authors of this study, as a technology to reduce leaf litter weight and cesium concentration, separating radioactive nuclides from non-radioactive ones, in leaf litter...
April 2017: Chemosphere
https://www.readbyqxmd.com/read/28101947/combined-surgical-therapy-of-advanced-peri-implantitis-evaluating-two-methods-of-surface-decontamination-a-7-year-follow-up-observation
#13
Frank Schwarz, Gordon John, Andrea Schmucker, Narja Sahm, Jürgen Becker
OBJECTIVES: To assess the long-term outcomes (>4 years) following combined surgical resective/regenerative therapy of advanced peri-implantitis lesions using two surface decontamination methods. MATERIAL & METHODS: Fifteen patients (n = 15 combined supra- and intrabony defects) completed a follow-up observation period of 7 years. The treatment procedure included access flap surgery, granulation tissue removal and implantoplasty at buccally and supracrestally exposed implant parts, and a randomly assigned decontamination of the unmodified intrabony implant surface areas using either (i) an Er:YAG laser (ERL) or (ii) plastic curettes + cotton pellets + sterile saline (CPS)...
March 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28098192/wearable-atmospheric-pressure-plasma-fabrics-produced-by-knitting-flexible-wire-electrodes-for-the-decontamination-of-chemical-warfare-agents
#14
Heesoo Jung, Jin Ah Seo, Seungki Choi
One of the key reasons for the limited use of atmospheric pressure plasma (APP) is its inability to treat non-flat, three-dimensional (3D) surface structures, such as electronic devices and the human body, because of the rigid electrode structure required. In this study, a new APP system design-wearable APP (WAPP)-that utilizes a knitting technique to assemble flexible co-axial wire electrodes into a large-area plasma fabric is presented. The WAPP device operates in ambient air with a fully enclosed power electrode and grounded outer electrode...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28074652/trends-in-methyl-tert-butyl-ether-concentrations-in-private-wells-in-southeast-new-hampshire-2005-to-2015
#15
Sarah M Flanagan, Joseph P Levitt, Joseph D Ayotte
In southeast New Hampshire, where reformulated gasoline was used from the 1990s to 2007, methyl tert-butyl ether (MtBE) concentrations ≥0.2 μg/L were found in water from 26.7% of 195 domestic wells sampled in 2005. Ten years later in 2015, and eight years after MtBE was banned, 10.3% continue to have MtBE. Most wells (140 of 195) had no MtBE detections (concentrations <0.2 μg/L) in 2005 and 2015. Of the remaining wells, MtBE concentrations increased in 4 wells, decreased in 47 wells, and did not change in 4 wells...
January 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28046816/su-f-p-24-radiological-disperse-device
#16
R Alam
PURPOSE: We are now living in a society of constant fear of terrorism. This topic is pertaining to give a general knowledge of what is a radiological dispersion device or RDD and in case of its detonation, what are the options open to public for a safe action in terms of reducing the exposure and knowing the proper steps. These RDD are also called dirty bombs. METHODS: Compared to nuclear weapons, dirty bombs are easy to make. In order for a terrorist organization to construct and detonate a dirty bomb, it must acquire radioactive material by stealing it or buying it through legal or illegal channels...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043561/identification-of-different-subtypes-of-rapid-growing-atypical-mycobacterium-from-water-and-soil-sources-using-pcr-rflp-using-hsp65-and-rrna-16s-23s-genes
#17
Mohammad Varahram, Parissa Farnia, Shima Saif, Mehran Marashian, Poopak Farnia, Jaladein Ghanavi, Ali Akbar Velayati
OBJECTIVE/BACKGROUND: Nontuberculosis mycobacteria (NTM) are a diverse group of microorganisms that cause a variety of diseases in humans including skin, respiratory, and gastrointestinal tract infection. Generally, NTM are classified into two categories: rapid (<7days) and slow growing (>7days). In this study, we aimed to investigate NTM frequency and prevalence in environmental samples. Additionally, we tried to identify various subtypes of isolated rapid growing mycobacteria (RGM)...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043549/effect-of-time-duration-of-digestion-decontamination-technique-on-yield-of-mycobacteria-and-contamination-rates-from-sterile-body-fluids-pleural-and-ascitic-fluid-and-pus-specimens
#18
Samreen Shafiq, Faryal Saleem, Kauser Jabeen, Joveria Farooqi, Warda Alam, Sadia Hanif, Shazia Ali, Sadia Shakoor, Rumina Hasan
BACKGROUND: Duration of digestion/decontamination has a considerable impact on yield of mycobacteria especially from sterile body fluids and pus specimens. Additionally, duration of digestion/decontamination affects the contamination rates. This study evaluates the effect of digestion/decontamination protocol for 15 and 20min versus inoculation of media directly from the sample on contamination rates as well as the yield of mycobacteria from pus and sterile fluids other than cerebrospinal fluids...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28040848/new-proof-of-concept-in-viral-inactivation-virucidal-efficacy-of-405%C3%A2-nm-light-against-feline-calicivirus-as-a-model-for-norovirus-decontamination
#19
Rachael M Tomb, Michelle Maclean, John E Coia, Elizabeth Graham, Michael McDonald, Chintamani D Atreya, Scott J MacGregor, John G Anderson
The requirement for novel decontamination technologies for use in hospitals is ever present. One such system uses 405 nm visible light to inactivate microorganisms via ROS-generated oxidative damage. Although effective for bacterial and fungal inactivation, little is known about the virucidal effects of 405 nm light. Norovirus (NoV) gastroenteritis outbreaks often occur in the clinical setting, and this study was designed to investigate potential inactivation effects of 405 nm light on the NoV surrogate, feline calicivirus (FCV)...
December 31, 2016: Food and Environmental Virology
https://www.readbyqxmd.com/read/28039835/toxicokinetics-of-chlordecone-in-goats-implications-for-risk-management-in-french-west-indies
#20
Agnès Fournier, Cyril Feidt, Marie-Laure Lastel, Harry Archimede, Jean-Pierre Thome, Maurice Mahieu, Guido Rychen
The former use of chlordecone (CLD) in the French West Indies has resulted in long-term pollution of soils. CLD is known to be potentially transferred towards animal products of animals reared outdoors, mainly through accidental soil ingestion. Several studies indicate that soil bound CLD is bioavailable when administered to farm animals. Currently there is a need to quantify the level of CLD absorption and its toxicokinetic characteristics in the ruminant and particularly in the goat. These are considered as important farm species in the French West Indies...
December 13, 2016: Chemosphere
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