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https://www.readbyqxmd.com/read/28817098/estimation-of-the-vertical-distribution-of-radiocesium-in-soil-on-the-basis-of-the-characteristics-of-gamma-ray-spectra-obtained-via-aerial-radiation-monitoring-using-an-unmanned-helicopter
#1
Kotaro Ochi, Miyuki Sasaki, Mutsushi Ishida, Shoichiro Hamamoto, Taku Nishimura, Yukihisa Sanada
After the Fukushima Daiichi Nuclear Power Plant accident, the vertical distribution of radiocesium in soil has been investigated to better understand the behavior of radiocesium in the environment. The typical method used for measuring the vertical distribution of radiocesium is troublesome because it requires collection and measurement of the activity of soil samples. In this study, we established a method of estimating the vertical distribution of radiocesium by focusing on the characteristics of gamma-ray spectra obtained via aerial radiation monitoring using an unmanned helicopter...
August 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28804670/synthesis-and-characterization-of-mixed-iron-manganese-oxide-nanoparticles-and-their-application-for-efficient-nickel-ion-removal-from-aqueous-samples
#2
Alessandro Buccolieri, Antonio Serra, Giuseppe Maruccio, Anna Grazia Monteduro, Sanosh Kunjalukkal Padmanabhan, Antonio Licciulli, Valentina Bonfrate, Luca Salvatore, Daniela Manno, Lucio Calcagnile, Gabriele Giancane
Mixed iron-manganese oxide nanoparticles, synthesized by a simple procedure, were used to remove nickel ion from aqueous solutions. Nanostructures, prepared by using different weight percents of manganese, were characterized by transmission electron microscopy, selected area diffraction, X-ray diffraction, Raman spectroscopy, and vibrating sample magnetometry. Adsorption/desorption isotherm curves demonstrated that manganese inclusions enhance the specific surface area three times and the pores volume ten times...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28778008/distribution-of-137-cs-on-components-in-urban-area-four-years-after-the-fukushima-dai-ichi-nuclear-power-plant-accident
#3
K Yoshimura, K Saito, K Fujiwara
Distribution of (137)Cs on components in urban areas such as roofs and roads is crucial for evaluating the behavior of radiocesium and ambient dose rates in the area. This study evaluated relative (137)Cs inventories, which are defined as the relative values of (137)Cs inventory on each component to that on a nearby permeable plane field, for 11 buildings in the evacuation zone about four years after the Fukushima Dai-ichi Nuclear Power Plant accident. The average relative inventory of paved ground accounted for 0...
August 1, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28764137/modeling-the-aqueous-phase-reactivity-of-hydroxyl-radical-towards-diverse-organic-micropollutants-an-aid-to-water-decontamination-processes
#4
Shikha Gupta, Nikita Basant
The rate constants of the hydroxyl radical reactions (kOH) with organic micropollutants (OMPs) in aqueous medium are important in designing the advanced oxidation processes (AOPs) for their removal. In this study, a quantitative structure-property relationship (QSPR) model for the prediction of kOH of diverse and emerging OMPs was developed in accordance with the OECD guidelines. A large experimental data set (n = 995) comprised of compounds with kOH values ranging from 7.9 × 10(5) to 6.8 × 10(10) M(-1) s(-1) was considered and several molecular descriptors were calculated...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28756961/efficacy-of-photon-induced-photoacoustic-streaming-in-the-reduction-of-enterococcus-faecalis-within-the-root-canal-different-settings-and-different-sodium-hypochlorite-concentrations
#5
Barbara Skrlj Golob, Giovanni Olivi, Mirijam Vrabec, Rita El Feghali, Steven Parker, Stefano Benedicenti
INTRODUCTION: The purpose of this study was to determine the effectiveness of laser-activated irrigation by photon-induced photoacoustic streaming (PIPS) in the reduction of Enterococcus faecalis in root canal disinfection, varying laser energy output, and sodium hypochlorite (NaOCl) concentration. For effective removal of the smear layer, the sequence and resting time of the final irrigation steps were modified compared with the standard PIPS protocol. METHODS: Eighty-six extracted single-rooted teeth were mechanically prepared, sterilized, and inoculated with E...
July 27, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28724453/decrease-in-vancomycin-resistant-enterococcus-colonization-after-extensive-renovation-of-a-unit-dedicated-to-the-treatment-of-hematologic-malignancies-and-hematopoietic-stem-cell-transplantation
#6
Clyde D Ford, Michaela A Gazdik Stofer, Jana Coombs, Bert K Lopansri, Brandon J Webb, Gabriela Motyckova, Finn Bo Petersen
OBJECTIVE While a direct relation between hospital construction and concomitant infection rates has been clearly established, few data are available regarding the environmental decontamination effects of renovation in which surfaces are replaced and regarding subsequent infection incidence. DESIGN Retrospective clinical study with vancomycin-resistant Enterococcus (VRE) molecular strain typing and environmental cultures. SETTING A regional referral center for acute leukemia and hematopoietic stem-cell transplantation...
July 20, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28682791/individual-external-dose-monitoring-of-all-citizens-of-date-city-by-passive-dosimeter-5-to-51-months-after-the-fukushima-npp-accident-series-ii-prediction-of-lifetime-additional-effective-dose-and-evaluating-the-effect-of-decontamination-on-individual-dose
#7
Makoto Miyazaki, Ryugo Hayano
In the first paper of this series, we showed that the ratio c of individual dose to ambient dose did not change with time in Date City, Fukushima Prefecture, after the Fukushima Daiichi Nuclear Power Plant accident. The purpose of the present paper, the second in a series, is to estimate the lifetime doses of the Date City residents, based on continuous glass badge monitoring data, extrapolated by means of the ambient-dose-rate reduction function obtained from the airborne monitoring data. As a result, we found that the external exposure contribution to the mean additional lifetime dose of residents living in Date City is not expected to exceed 18 mSv...
July 6, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28680198/influence-of-decontaminating-agents-and-swipe-materials-on-laboratory-simulated-working-surfaces-wet-spilled-with-sodium-pertechnetate
#8
Suman Akchata, K Lavanya, Bhushan Shivanand
CONTEXT: Decontamination of various working surfaces with sodium pertechnetate minor spillage is essential for maintaining good radiation safety practices as well as for regulatory compliance. AIM: To observe the influences of decontaminating agents and swipe materials on different type of surfaces used in nuclear medicine laboratory work area wet spilled with 99m-technetium (99mTc) sodium pertechnetate. SETTINGS AND DESIGN: Lab-simulated working surface materials...
July 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28676790/nanotechnology-in-sustainable-agriculture-recent-developments-challenges-and-perspectives
#9
REVIEW
Ram Prasad, Atanu Bhattacharyya, Quang D Nguyen
Nanotechnology monitors a leading agricultural controlling process, especially by its miniature dimension. Additionally, many potential benefits such as enhancement of food quality and safety, reduction of agricultural inputs, enrichment of absorbing nanoscale nutrients from the soil, etc. allow the application of nanotechnology to be resonant encumbrance. Agriculture, food, and natural resources are a part of those challenges like sustainability, susceptibility, human health, and healthy life. The ambition of nanomaterials in agriculture is to reduce the amount of spread chemicals, minimize nutrient losses in fertilization and increased yield through pest and nutrient management...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28622352/volunteer-trials-of-a-novel-improvised-dry-decontamination-protocol-for-use-during-mass-casualty-incidents-as-part-of-the-uk-s-initial-operational-response-ior
#10
Richard Amlôt, Holly Carter, Lorna Riddle, Joanne Larner, Robert P Chilcott
Previous studies have demonstrated that rapid evacuation, disrobing and emergency decontamination can enhance the ability of emergency services and acute hospitals to effectively manage chemically-contaminated casualties. The purpose of this human volunteer study was to further optimise such an "Initial Operational Response" by (1) identifying an appropriate method for performing improvised skin decontamination and (2) providing guidance for use by first responders and casualties. The study was performed using two readily available, absorbent materials (paper towels and incontinence pads)...
2017: PloS One
https://www.readbyqxmd.com/read/28618392/radiocesium-decontamination-of-a-riverside-in-fukushima-japan
#11
Tatsuhiro Nishikiori, Satoshi Suzuki
Extensive decontamination measures have been implemented in the area affected by the Fukushima Dai-ichi nuclear disaster. Typical decontamination measures, such as removing topsoil of several centimeters in depth, are not suitable for rivers where contaminated sediments have been deposited. A decontamination measure was tested that considered the spatial distribution of radiocesium at the lower part of a tributary of the Abukuma River in Fukushima. The radiocesium distribution in the flood channel was vertically and horizontally highly heterogeneous...
June 12, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28582971/degradation-of-aflatoxin-b1-from-naturally-contaminated-maize-using-the-edible-fungus-pleurotus-ostreatus
#12
Lauren W Jackson, Barry M Pryor
Aflatoxins are highly carcinogenic secondary metabolites that can contaminate approximately 25% of crops and that cause or exacerbate multiple adverse health conditions, especially in Sub-Saharan Africa and South and Southeast Asia. Regulation and decontamination of aflatoxins in high exposure areas is lacking. Biological detoxification methods are promising because they are assumed to be cheaper and more environmentally friendly compared to chemical alternatives. White-rot fungi produce non-specific enzymes that are known to degrade aflatoxin in in situ and ex situ experiments...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28551564/effects-of-local-scale-decontamination-in-a-secondary-forest-contaminated-after-the-fukushima-nuclear-power-plant-accident
#13
Yoshiko Ayabe, Naoki Hijii, Chisato Takenaka
We investigated whether local-scale decontamination (removal of the litter layer, superficial soil layer, and understory) in a secondary forest contaminated by the Fukushima nuclear power plant accident reduced (137)Cs contamination of the soil and litter. We also measured (137)Cs concentrations in plants and in the web-building spider Nephila clavata (Nephilidae: Arachnida), as an indicator species, to examine (137)Cs contamination in arthropods. One month after decontamination, the total (137)Cs contamination (soil + litter) was reduced by 20% (100 kBq·m(-2)) relative to that in an adjacent untreated (i...
September 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28514981/essential-lessons-in-a-potential-sarin-attack-disaster-plan-for-a-resource-constrained-environment
#14
Matthew John Watermeyer, Nicole Dippenaar, Nelly Clotildea Tchouambou Simo, Sean Buchanan, Abdullah Ebrahim Laher
Sarin is a potent nerve agent chemical weapon that was originally designed for military purposes as a fast-acting anti-personnel weapon that would kill or disable large numbers of enemy troops. Its potent toxicity, ease of deployment, and rapid degradation allow for rapid deployment by an attacking force, who can safely enter the area of deployment a short while after its release. Sarin has been produced and stockpiled by a number of countries, and large quantities of it still exist despite collective agreements to cease manufacture and destroy stockpiles...
May 18, 2017: Disaster Medicine and Public Health Preparedness
https://www.readbyqxmd.com/read/28493114/-management-of-multiresistant-bacteria-in-urology
#15
REVIEW
W Vahlensieck, R Rudolph, H-J Knopf, U Dahl, W Fabry
Contamination and infection with extensive drug resistant (XDR) bacteria are increasing in urology with the exception of methicillin resistant Staphylococcus aureus (MRSA) (stabilization). They often lead to logistic and therapeutical problems. Only 30-50% of XDR cases are of exogenous origin. To slow this trend, screening, hygiene programs, isolation, decontamination, targeted therapy of symptomatic infections, education programs, and success controls should be applied. Furthermore, all regulatory and legal instructions should be followed...
June 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28453321/hand-decontamination-in-clinical-practice-a-review-of-the-evidence
#16
REVIEW
Ruth Rigby, Anne Pegram, Sue Woodward
Hand decontamination is known to significantly reduce the spread of hospital-acquired infections but, despite a wealth of guidelines and education campaigns, evidence suggests that many healthcare workers are non-compliant with hand decontamination. The behaviours that prevent hand decontamination are complex. Studies look at attitudes towards dirt, disgust, self-protective hand washing and familiarity with patients. Self-protection behaviours manifest themselves in washing hands more often after certain tasks...
April 27, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28401386/a-comprehensive-review-on-removal-of-arsenic-using-activated-carbon-prepared-from-easily-available-waste-materials
#17
REVIEW
Monoj Kumar Mondal, Ravi Garg
Arsenic contamination in water bodies is a serious problem and causes various health problems due to which US Environment Protection Agency (USEPA) set its maximum permissible limit of 10 ppb. The present review article starts with the removal of toxic arsenic using adsorbents prepared from easily available waste materials. Adsorbent either commercial or low-cost adsorbent can be used for arsenic removal but recent research was focused on the low-cost adsorbent. Preparation and activation of various adsorbents were discussed...
May 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28389036/use-of-different-surface-covering-materials-to-enhance-removal-of-radiocaesium-in-plants-and-upper-soil-from-orchards-in-fukushima-prefecture
#18
Mamoru Sato, Hiroko Akai, Yuichi Saito, Tsugiko Takase, Hidetoshi Kikunaga, Nobuhito Sekiya, Tsutomu Ohtsuki, Katsuhiko Yamaguchi
The effectiveness of a decontamination methodology whereby herbaceous plants were grown through different materials covering the soil surface followed by subsequent removal of the material, associated plant tissues and attached soil on (137)Cs removal from soil was evaluated. Revegetation netting sown with Kentucky bluegrass and white clover had a high effectiveness in (137)Cs removal when rolling up the plants, roots, and rhizosphere soil approximately 6 months after sowing. The removal rate was lower when there was higher (137)Cs vertical migration down the soil profile...
April 4, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28336856/a-novel-heterostructure-of-bioi-nanosheets-anchored-onto-mwcnts-with-excellent-visible-light-photocatalytic-activity
#19
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
#20
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
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