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https://www.readbyqxmd.com/read/29442190/effects-of-open-dumping-of-msw-on-metal-contamination-of-soil-plants-and-earthworms-in-ranchi-jharkhand-india
#1
Monika Singh, Mohini Verma, R Naresh Kumar
Influence of open dumping of municipal solid wastes (MSW) on metal contamination of soil, plants, and earthworms in Ranchi, Jharkhand, India, was studied over 6-month period. Dumpsite in the study area exists in two sections, old section where waste dumping has stopped and new section where wastes are currently disposed. Soil around dumpsite had high concentration of Co, Cr, Cu, Pb, and Zn than that at control site. Geoaccumulation index indicated uncontaminated to moderate level of soil contamination at old dumpsite and soil at new dumpsite was found to be uncontaminated...
February 13, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29421080/efficacy-of-seawater-for-washing-oiled-birds-during-an-oil-spill-response
#2
Graeme R Finlayson, B Louise Chilvers, Hayley Pearson, Bridey J White, Serena T Finlayson, Karin Sievwright, Nicki van Zyl, Kerri J Morgan, Curt Clumpner
Aquatic pollution events can be detrimental to the survival of wildlife, particularly birds. To decontaminate affected birds, large quantities of fresh water are required. A recent study using seabird feathers, demonstrated that seawater wash/rinse can effectively remove oil from feathers. However to determine whether seawater was effective for live birds, we used 36 mallard ducks to replicate the oiled feather wash/rinse study. We investigated the time and volume of water used, bird water-proofing scores after daily swims and a barbule amalgamation index (BAI), for feathers collected at stages throughout the process...
January 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29417481/effect-of-planting-density-and-harvest-protocol-on-field-scale-phytoremediation-efficiency-by-eucalyptus-globulus
#3
Jie Luo, Mei He, Shihua Qi, Jian Wu, Xiaowen Sophie Gu
The phytoremediation efficiency of multi-metal-polluted sites in an electronic waste recycling town by Eucalyptus globulus was evaluated through a series of 2-year field experiments. Different initial planting densities (2500, 5000, and 10,000 plants per ha), coppice rotations, and harvesting position (5 or 30 cm above the ground) protocols were designed to improve the remediation potential of the species. There were unnoticeable variations in metal concentrations and distribution characteristics in plant tissues in a low and medium planting-density field during the experimental period...
February 7, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29334858/case-study-of-occupational-mercury-exposure-during-decontamination-of-turnaround-in-refinery-plant
#4
Maytiya Muadchim, Wantanee Phanprasit, Mark Gregory Robson, Dusit Sujirarat, Rawee Detchaipitak
Decontamination during turnaround (TA) can lead to high exposure to toxic chemicals among workers. The decontamination process in refinery plants usually comprises two types, i.e. steam and chemical decontamination. No matter the method used, concentrations of toxic chemicals must be measured using the direct reading instrument at the end of each decontamination cycle, which maybe repeated several times until the readings are in acceptable level. To evaluate mercury exposure of decontamination workers during decontamination procedure in comprehensive turnaround of a refinery plant...
January 15, 2018: International Journal of Occupational and Environmental Health
https://www.readbyqxmd.com/read/29316786/controlled-growth-and-grafting-of-high-density-au-nanoparticles-on-zinc-oxide-thin-films-by-photo-deposition
#5
Jeremy Cure, Hala Assi, Kévin Cocq, Lorena Marín, Katia Fajerwerg, Pierre Fau, Eric Beche, Yves J Chabal, Alain Esteve, Carole Rossi
The integration of high-purity nano-objects on substrates remains a great challenge for addressing scaling-up issues in nanotechnology. For instance, grafting gold nanoparticles (NPs) on zinc oxide films, a major step process for catalysis or photovoltaic applications, still remains difficult to master. We report a modified photo-deposition (P-D) approach that achieves tight control of the NPs size (7.5 ± 3 nm), shape (spherical), purity, and high areal density (3500 ± 10 NPs/m2) on ZnO films. This deposition method is also compatible with large ZnO surface areas...
January 9, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29311436/legionnaires-disease-as-an-occupational-risk-related-to-decontamination-work-after-the-fukushima-nuclear-disaster-a-case-report
#6
Toyoaki Sawano, Masaharu Tsubokura, Akihiko Ozaki, Claire Leppold, Shigeaki Kato, Toshiyuki Kambe
OBJECTIVES: Legionnaires' disease (LD), which is atypical pneumonia with a broad variety of clinical symptoms, can lead to death despite its low incidence. There are multiple risk factors for LD, yet little information is available concerning what kind of environmental factors are linked to higher risk of LD development. We have experienced a fatal case of LD, which occurred in a decontamination worker after the Fukushima nuclear disaster. CASE: A 53-year-old Japanese male visited our hospital with symptoms of fever, vomiting, diarrhea, and altered mental status, but not with respiratory manifestations...
December 28, 2017: Journal of Occupational Health
https://www.readbyqxmd.com/read/29304455/sulfur-rich-microporous-polymer-enables-rapid-and-efficient-removal-of-mercury-ii-from-water
#7
Dan Xu, Winston Duo Wu, Hao-Jun Qi, Rui-Xia Yang, Wei-Qiao Deng
Design and synthesis of adsorbents for efficient decontamination of hazardous contaminants Hg2+ from wastewater, based on a facile and economical strategy, is an attractive target. Here, a novel sulfur rich microporous polymer (sulfur content of 31.4 wt %) with high surface area as well as densely populated sulfur atom with fast accessibility was reported to remove mercury (II) from water. The as prepared polymer (SMP) exhibited high binding affinity, high adsorption capacities, rapid adsorption kinetics, and good recyclability for Hg2+...
December 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/29299181/antioxidant-agents-against-trichothecenes-new-hints-for-oxidative-stress-treatment
#8
REVIEW
Qinghua Wu, Xu Wang, Eugenie Nepovimova, Yun Wang, Hualin Yang, Li Li, Xiujuan Zhang, Kamil Kuca
Trichothecenes are a group of mycotoxins mainly produced by fungi of genus Fusarium. Due to high toxicity and widespread dissemination, T-2 toxin and deoxynivalenol (DON) are considered to be the most important compounds of this class. Trichothecenes generate free radicals, including reactive oxygen species (ROS), which induce lipid peroxidation, decrease levels of antioxidant enzymes, and ultimately lead to apoptosis. Consequently, oxidative stress is an active area of research on the toxic mechanisms of trichothecenes, and identification of antioxidant agents that could be used against trichothecenes is crucial for human health...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29298999/comparison-of-decontamination-efficacy-of-cleaning-solutions-on-a-biological-safety-cabinet-workbench-contaminated-by-cyclophosphamide
#9
Apolline Adé, Laure Chauchat, Johann-François Ouellette Frève, Sébastien Gagné, Nicolas Caron, Jean-François Bussières
Background: Several studies have compared cleaning procedures for decontaminating surfaces exposed to antineoplastic drugs. All of the cleaning products tested were successful in reducing most of the antineoplastic drug quantities spilled on surfaces, but none of them completely removed residual traces. Objective: To assess the efficacy of various cleaning solutions for decontaminating a biological safety cabinet workbench exposed to a defined amount of cyclophosphamide...
November 2017: Canadian Journal of Hospital Pharmacy
https://www.readbyqxmd.com/read/29278793/a-novel-photocatalytically-active-mesoporous-metal-free-ppy-grafted-mwcnt-nanocomposite
#10
Balakumar Vellaichamy, Prakash Periakaruppan, Ramya Arumugam, Kathiresan Sellamuthu, Bhuvana Nagulan
A new mesoporous metal-free functionalized multi-walled carbon nanotube (f-MWCNT) covalently grafted polypyrrole (PPy) nanocomposite has been synthesized via chemical oxidative polymerization method keeping different weight ratio of f-MWCNT (1-4). Various instrumentation techniques such as UV-DRS, FT-IR, XRD, Raman, TGA, BET and TEM were used to characterize the as-prepared nanocomposite. The successfully constructed photocatalytically active mesoporous metal-free PPy grafted MWCNT nanocomposite was employed for the decontamination of nitrobenzene (NB)...
December 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29261764/pyoderma-outbreak-among-kindergarten-families-association-with-a-panton-valentine-leukocidin-pvl-producing-s-aureus-strain
#11
Rasmus Leistner, Axel Kola, Petra Gastmeier, Renate Krüger, Pia-Alice Hoppe, Sylke Schneider-Burrus, Irina Zuschneid, Nicoletta Wischnewski, Jennifer Bender, Franziska Layer, Michaela Niebank, Carmen Scheibenbogen, Leif G Hanitsch
OBJECTIVES: We report on an outbreak of skin and soft tissue infections (SSTI) among kindergarten families. We analyzed the transmission route and aimed to control the outbreak. METHODS: The transmission route was investigated by nasal screening for Panton-Valentine leukocidin (PVL)-producing Staphylococcus aureus (PVL-SA), subsequent microbiological investigation including whole genome sequencing and a questionnaire-based analysis of epidemiological information...
2017: PloS One
https://www.readbyqxmd.com/read/29261680/determinants-of-stunting-among-children-aged-6-59-months-at-kindo-didaye-woreda-wolaita-zone-southern-ethiopia-unmatched-case-control-study
#12
Bancha Batiro, Tsegaye Demissie, Yoseph Halala, Antehun Alemayehu Anjulo
BACKGROUND: Stunting is a well-established risk marker of poor child development. Globally in 2017, 155 million children under 5 were estimated to be stunted. While different activities are being done to reduce the burden of stunted growth, the problem is overwhelming in Africa; it was increased by 24%. Therefore, identifying determinants of stunting among children aged 6-59 would help to set priorities for action and to the design of stunting reduction plan at a grassroots level. METHODS: The unmatched case-control study was conducted in randomly selected 8 rural kebeles of Kindo Didaye woreda, Ethiopia from February to April, 2016 to identify the determinants of stunting among children aged 6-59 months...
2017: PloS One
https://www.readbyqxmd.com/read/29220202/comparison-of-uv-c-and-pulsed-uv-light-treatments-for-reduction-of-salmonella-listeria-monocytogenes-and-enterohemorrhagic-escherichia-coli-on-eggs
#13
Askild L Holck, Kristian H Liland, Signe M Drømtorp, Mats Carlehög, Anette McLEOD
Ten percent of all strong-evidence foodborne outbreaks in the European Union are caused by Salmonella related to eggs and egg products. UV light may be used to decontaminate egg surfaces and reduce the risk of human salmonellosis infections. The efficiency of continuous UV-C (254 nm) and pulsed UV light for reducing the viability of Salmonella Enteritidis, Listeria monocytogenes, and enterohemorrhagic Escherichia coli on eggs was thoroughly compared. Bacterial cells were exposed to UV-C light at fluences from 0...
January 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29190508/evaluation-of-sediment-and-137cs-redistribution-in-the-oginosawa-river-catchment-near-the-fukushima-dai-ichi-nuclear-power-plant-using-integrated-watershed-modeling
#14
Kazuyuki Sakuma, Alex Malins, Hironori Funaki, Hiroshi Kurikami, Tadafumi Niizato, Takahiro Nakanishi, Koji Mori, Kazuhiro Tada, Takamaru Kobayashi, Akihiro Kitamura, Masaaki Hosomi
The Oginosawa River catchment lies 15 km south-west of the Fukushima Dai-ichi nuclear plant and covers 7.7 km2. Parts of the catchment were decontaminated between fall 2012 and March 2014 in preparation for the return of the evacuated population. The General-purpose Terrestrial Fluid-flow Simulator (GETFLOWS) code was used to study sediment and 137Cs redistribution within the catchment, including the effect of decontamination on redistribution. Fine resolution grid cells were used to model local features of the catchment, such as paddy fields adjacent to the Oginosawa River...
November 27, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29178762/adverse-effects-of-salivary-contamination-for-adhesives-in-restorative-dentistry-a-literature-review
#15
REVIEW
Pooja Nair, Reinhard Hickel, Nicoleta Ilie
PURPOSE: To review and critically analyze the literature concerning the influence of salivary contamination on the bond quality of adhesives used in restorative materials by comparing and contrasting the different adhesive materials. METHODS: A detailed search on PUBMED, Cochrane Library, Google Scholar and Web of Science was carried out to identify publications on salivary contamination and dental adhesive materials, from 1990-2017 (March) which resulted in a total of 6,202 web-identified publications...
June 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29154531/study-of-graphene-oxide-structural-features-for-catalytic-antibacterial-gas-sensing-and-metals-decontamination-environmental-applications
#16
Shamaila Sajjad, Sajjad Ahmed Khan Leghari, Anum Iqbal
This study represents a comprehensive review about the structural features of graphene oxide (GO) and its significance in environmental applications. Two Dimensional (2D) GO is tremendously focused in advanced carbon based nanomaterial for environmental applications due to its tunable physicochemical characteristics. Herein, we report foundational structural models of GO and explore the chemical bonding of oxygen moieties with graphite basal plane using various characterization tools. Moreover, the impact of these oxygen moieties and morphology of GO for the environmental applications such as removal of metal ions, catalytic, antibacterial and gas sensing abilities has here been critically reviewed for the first time...
November 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29149625/the-effects-of-pre-and-post-slaughter-spray-application-with-organic-acids-on-microbial-population-reductions-on-beef-carcasses
#17
Hoa Van Ba, Hyun-Woo Seo, Seong Pil-Nam, Yoon-Seok Kim, Beom Young Park, Sung-Sil Moon, Se-Ju Kang, Yong-Min Choi, Jin-Hyoung Kim
As an attempt to control bacterial cross-contamination of beef carcasses, in the present investigation acetic acid and lactic acid (3% v/v) were used for bacterial decontamination. For the decontamination, cows were sprayed with each above acid at two different stages; (i) on live animal's hides, (ii) on carcass surfaces immediately after slaughter. Microbiological samples were taken on different hide areas of animals before spraying and on carcass surfaces at 24h after spraying. Meat quality traits were also analyzed on the sprayed animals...
November 6, 2017: Meat Science
https://www.readbyqxmd.com/read/29143704/identification-of-clostridium-difficile-reservoirs-in-the-patient-environment-and-efficacy-of-aerial-hydrogen-peroxide-decontamination
#18
Samuel Yui, Shanom Ali, Monika Muzslay, Annette Jeanes, A Peter R Wilson
OBJECTIVE To identify, using a novel enhanced method of recovery, environmental sites where spores of Clostridium difficile persist despite cleaning and hydrogen peroxide aerial decontamination. DESIGN Cohort study. SETTING Tertiary referral center teaching hospital. METHODS In total, 16 sites representing high-frequency contact or difficult-to-clean surfaces in a single-isolation room or bed area in patient bed bays were sampled before and after terminal or hydrogen peroxide disinfection using a sponge swab...
November 16, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29140375/plasma-of-argon-increases-cell-attachment-and-bacterial-decontamination-on-different-implant-surfaces
#19
Luigi Canullo, Tullio Genova, Hom-Lay Wang, Stefano Carossa, Federico Mussano
PURPOSE: This in vitro study tested the effects of argon atmospheric pressure dielectric barrier discharge (APDBD) on different implant surfaces with regard to physical changes, bacterial decontamination, and osteoblast adhesion. MATERIALS AND METHODS: Seven hundred twenty disks with three different surface topographies-machined (MAC), titanium plasma-sprayed (TPS), and zirconia-blasted and acid-etched (ZRT)-were tested in this experiment. Bacterial adhesion tests were performed repeatedly on a simplified biofilm of Streptococcus mitis...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29114225/application-of-activated-carbon-derived-from-seed-shells-of-jatropha-curcas-for-decontamination-of-zearalenone-mycotoxin
#20
Naveen K Kalagatur, Kumarvel Karthick, Joseph A Allen, Oriparambil Sivaraman Nirmal Ghosh, Siddaiah Chandranayaka, Vijai K Gupta, Kadirvelu Krishna, Venkataramana Mudili
In the present study, activated carbon (AC) was derived from seed shells of Jatropha curcas and applied to decontaminate the zearalenone (ZEA) mycotoxin. The AC of J. curcas (ACJC) was prepared by ZnCl2 chemical activation method and its crystalline structure was determined by X-ray diffraction analysis. The crystalline graphitic nature of ACJC was confirmed from the Raman spectroscopy. Scanning electron microscope showed the porous surface morphology of the ACJC surface with high pore density and presence of elemental carbon was identified from the energy dispersive X-ray analysis...
2017: Frontiers in Pharmacology
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