keyword
MENU ▼
Read by QxMD icon Read
search

contamination

keyword
https://www.readbyqxmd.com/read/28102983/diseases-associated-with-exposure-to-contaminants-in-the-water-supply-at-camp-lejeune-final-rule
#1
(no author information available yet)
The Department of Veterans Affairs (VA) amends its adjudication regulations regarding presumptive service connection, adding certain diseases associated with contaminants present in the base water supply at U.S. Marine Corps Base Camp Lejeune (Camp Lejeune), North Carolina, from August 1, 1953, to December 31, 1987. This final rule establishes that veterans, former reservists, and former National Guard members, who served at Camp Lejeune for no less than 30 days (consecutive or nonconsecutive) during this period, and who have been diagnosed with any of eight associated diseases, are presumed to have incurred or aggravated the disease in service for purposes of entitlement to VA benefits...
13, 2017: Federal Register
https://www.readbyqxmd.com/read/28102942/a-platform-independent-method-to-reduce-ct-truncation-artifacts-using-discriminative-dictionary-representations
#2
Yang Chen, Adam Budde, Ke Li, Yinsheng Li, Jiang Hsieh, Guang-Hong Chen
PURPOSE: When the scan field of view (SFOV) of a CT system is not large enough to enclose the entire cross-section of the patient, or the patient needs to be positioned partially outside the SFOV for certain clinical applications, truncation artifacts often appear in the reconstructed CT images. Many truncation artifact correction methods perform extrapolations of the truncated projection data based on certain a priori assumptions. The purpose of this work was to develop a novel CT truncation artifact reduction method that directly operates on DICOM images...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28102927/complex-abdominal-wall-reconstruction-in-the-setting-of-active-infection-and-contamination-a-systematic-review-of-hernia-and-fistula-recurrence-rates
#3
REVIEW
Jonathan D Hodgkinson, Yasuko Maeda, Cosimo A Leo, Janindra Warusavitarne, Carolynne J Vaizey
INTRODUCTION: Minimal evidence exists to guide the surgeon on the risk of complications when performing abdominal wall reconstruction (AWR) in the presence of active infection, contamination or enterocutaneous fistula. This study aims to establish the outcomes of contaminated complex AWR. METHODS: Analysis was conducted according to PRISMA guidelines. Systematic search of the MEDLINE, EMBASE and Pubmed databases was performed. Studies reporting exclusively on single-staged repair of contaminated complex AWR were included...
January 19, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28102551/foliar-uptake-of-radiocaesium-from-irrigation-water-by-paddy-rice%C3%A2-oryza-sativa-an-overlooked-pathway-in-contaminated-environments
#4
Shinichiro Uematsu, Hildegarde Vandenhove, Lieve Sweeck, May Van Hees, Jean Wannijn, Erik Smolders
Flooded (paddy) rice (Oryza sativa) can take up ions from the irrigation water by foliar uptake via the exposed stem base. We hypothesised that the stem base uptake of radiocaesium (RCs) is a pathway for rice grown in RCs-contaminated environments. We developed a bi-compartmental device which discriminates the stem base from root RCs uptake from solutions, thereby using RCs isotopes ((137) Cs and (134) Cs) with < 2% solution leak between the compartments. Radiocaesium uptake was linear over time (0-24 h)...
January 19, 2017: New Phytologist
https://www.readbyqxmd.com/read/28102496/oil-exploration-activities-assessment-of-hazardous-impacts-on-golden-silk-cultivation
#5
Gitumani Devi, Arundhuti Devi, K G Bhattacharyya
Aliphatic-aromatic hydrocarbons and heavy metals (Cd, Cu, Co, Cr, Ni, Pb and Zn) were estimated in soil and leaf samples of Machilus bombycina (host plant of Antheraea assama silkworm) plantation along with atmospheric benzene, toluene and xylene (BTX) concentration near the oil exploration region of upper Assam, India, during the pre-monsoon and post-monsoon periods in six different sites. The results revealed higher aliphatic-aromatic hydrocarbons (ranging from 26.55 to 59.42 mg kg(-1)) and heavy metal contaminations in all the six soil sampling sites during the pre-monsoon period while the trend was the opposite for the plant leaves...
February 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28102440/thyroid-hormones-retinol-and-clinical-parameters-in-relation-to-mercury-and-organohalogen-contaminants-in-great-blue-heron-ardea-herodias-nestlings-from-the-st-lawrence-river-qu%C3%A3-bec-canada
#6
Louise Champoux, Monique Boily, Guy Fitzgerald
The exposure and effects of persistent environmental contaminants were investigated in great blue heron (Ardea herodias) nestlings sampled in 2001, 2002, 2006, and 2007 in freshwater and estuarine heronries along the St. Lawrence River, Québec (Canada). Biomarkers (retinoids, thyroid hormones, and clinical parameters) and contaminants (organochlorine contaminants, polychlorinated biphenyls (PCBs), brominated flame retardants (BFRs), and mercury (Hg)) were analyzed in blood, and Hg was analyzed in feathers (generally 9 nestlings per colony and 4 colonies per year)...
January 19, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28102439/reconstruction-of-radionuclide-intakes-for-the-residents-of-east-urals-radioactive-trace-1957-2011
#7
Evgenia I Tolstykh, Lyudmila M Peremyslova, Marina O Degteva, Bruce A Napier
The East Urals Radioactive Trace (EURT) was formed after a chemical explosion in the radioactive waste-storage facility of the Mayak Production Association in 1957 (Southern Urals, Russia) and resulted in an activity dispersion of 7.4 × 10(16) Bq into the atmosphere. Internal exposure due to ingestion of radionuclides with local foodstuffs was the main factor of public exposure at the EURT. The EURT cohort, combining residents of most contaminated settlements, was formed for epidemiological study at the Urals Research Center for Radiation Medicine, Russia (URCRM)...
January 19, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/28101717/trace-metals-accumulation-in-soil-irrigated-with-polluted-water-and-assessment-of-human-health-risk-from-vegetable-consumption-in-bangladesh
#8
REVIEW
Md Atikul Islam, Davor Romić, Md Ali Akber, Marija Romić
Trace metals accumulation in soil irrigated with polluted water and human health risk from vegetable consumption was assessed based on the data available in the literature on metals pollution of water, soil, sediment and vegetables from the cites of Bangladesh. The quantitative data on metal concentrations, their contamination levels and their pollution sources have not been systematically gathered and studied so far. The data on metal concentrations, sources, contamination levels, sample collection and analytical tools used were collected, compared and discussed...
January 18, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28101706/comparative-assessment-of-leca-and-spartina-maritima-to-remove-emerging-organic-contaminants-from-wastewater
#9
Ana Rita Ferreira, Paula Guedes, Eduardo P Mateus, Alexandra B Ribeiro, Nazaré Couto
The present work aimed to evaluate the capacity of constructed wetlands (CWs) to remove three emerging organic contaminants with different physicochemical properties: caffeine (CAF), oxybenzone (MBPh), and triclosan (TCS). The simulated CWs were set up with a matrix of light expanded clay aggregates (LECA) and planted with Spartina maritima, a salt marsh plant. Controlled experiments were carried out in microcosms using deionized water and wastewater collected at a wastewater treatment plant (WWTP), with different contaminant mass ranges, for 3, 7, and 14 days...
January 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28101613/estimation-of-anaerobic-debromination-rate-constants-of-pbde-pathways-using-an-anaerobic-dehalogenation-model
#10
Filiz Karakas, Ipek Imamoglu
This study aims to estimate anaerobic debromination rate constants (km) of PBDE pathways using previously reported laboratory soil data. km values of pathways are estimated by modifying a previously developed model as Anaerobic Dehalogenation Model. Debromination activities published in the literature in terms of bromine substitutions as well as specific microorganisms and their combinations are used for identification of pathways. The range of estimated km values is between 0.0003 and 0.0241 d(-1). The median and maximum of km values are found to be comparable to the few available biologically confirmed rate constants published in the literature...
January 19, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28101603/biodegradation-of-aldrin-and-dieldrin-by-the-white-rot-fungus-pleurotus-ostreatus
#11
Adi Setyo Purnomo, Refdinal Nawfa, Fahimah Martak, Kuniyoshi Shimizu, Ichiro Kamei
Aldrin and its metabolite dieldrin are persistent organic pollutants that contaminate soil in many parts of the world. Given the potential hazards associated with these pollutants, an efficient degradation method is required. In this study, we investigated the ability of Pleurotus ostreatus to transform aldrin as well as dieldrin in pure liquid cultures. This fungus completely eliminated aldrin in potato dextrose broth (PDB) medium during a 14-day incubation period. Dieldrin was detected as the main metabolite, and 9-hydroxylaldrin and 9-hydroxyldieldrin were less abundant metabolites...
January 18, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28101134/single-cell-isolation-process-with-laser-induced-forward-transfer
#12
Yu Deng, Philippe Renaud, Zhongning Guo, Zhigang Huang, Ying Chen
BACKGROUND: A viable single cell is crucial for studies of single cell biology. In this paper, laser-induced forward transfer (LIFT) was used to isolate individual cell with a closed chamber designed to avoid contamination and maintain humidity. Hela cells were used to study the impact of laser pulse energy, laser spot size, sacrificed layer thickness and working distance. The size distribution, number and proliferation ratio of separated cells were statistically evaluated. Glycerol was used to increase the viscosity of the medium and alginate were introduced to soften the landing process...
2017: Journal of Biological Engineering
https://www.readbyqxmd.com/read/28100597/investigation-of-a-candida-guilliermondii-pseudo-outbreak-reveals-a-novel-source-of-laboratory-contamination
#13
James E Kirby, Westyn Branch-Elliman, Mary T LaSalvia, Lorinda Longhi, Matthew MacKechnie, Grigoriy Urman, Linda M Baldini, Fatima R Muriel, Bernadette Sullivan, David S Yassa, Howard S Gold, Trevor K Wagner, Daniel J Diekema, Sharon B Wright
Candida guilliermondii was isolated from sterile specimens with increasing frequency over a several-month period despite a paucity of clinical evidence suggesting true Candida infections. However, a healthcare-associated outbreak was strongly considered due to growth patterns in the microbiology laboratory more consistent with true infection than environmental contamination. Therefore, an extensive investigation was performed to identify its cause. With the exception of one case, patient clinical courses were not consistent with true invasive fungal infections...
January 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28100591/dynamics-and-fate-of-beneficial-mutations-under-lineage-contamination-by-linked-deleterious-mutations
#14
Sophie Pénisson, Tanya Singh, Paul Sniegowski, Philip Gerrish
Beneficial mutations drive adaptive evolution, yet their selective advantage does not ensure their fixation. Haldane's application of single-type branching process theory showed that genetic drift alone could cause the extinction of newly-arising beneficial mutations with high probability. With linkage, deleterious mutations will affect the dynamics of beneficial mutations and might further increase their extinction probability. Here, we model the lineage dynamics of a newly-arising beneficial mutation as a multitype branching process...
January 18, 2017: Genetics
https://www.readbyqxmd.com/read/28100522/intraoperative-dexamethasone-does-not-increase-the-risk-of-postoperative-wound-infection-a-propensity-score-matched-post-hoc-analysis-of-the-enigma-ii-trial-endex
#15
T Corcoran, J Kasza, T G Short, E O'Loughlin, M T V Chan, K Leslie, A Forbes, M Paech, P Myles
BACKGROUND: In a post hoc analysis of the ENIGMA-II trial, we sought to determine whether intraoperative dexamethasone was associated with adverse safety outcomes. METHODS: Inverse probability weighting with estimated propensity scores was used to determine the association of dexamethasone administration with postoperative infection, quality of recovery, and adverse safety outcomes for 5499 of the 7112 non-cardiac surgery subjects enrolled in ENIGMA-II. RESULTS: Dexamethasone was administered to 2178 (40%) of the 5499 subjects included in this analysis and was not associated with wound infection [189 (8...
February 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28100412/virome-of-us-bovine-calf-serum
#16
Mohammadreza Sadeghi, Beatrix Kapusinszky, Danielle M Yugo, Tung Gia Phan, Xutao Deng, Isis Kanevsky, Tanja Opriessnig, Amelia R Woolums, David J Hurley, Xiang-Jin Meng, Eric Delwart
Using viral metagenomics we analyzed four bovine serum pools assembled from 715 calves in the United States. Two parvoviruses, bovine parvovirus 2 (BPV2) and a previously uncharacterized parvovirus designated as bosavirus (BosaV), were detected in 3 and 4 pools respectively and their complete coding sequences generated. Based on NS1 protein identity, bosavirus qualifies as a member of a new species in the copiparvovirus genus. Also detected were low number of reads matching ungulate tetraparvovirus 2, bovine hepacivirus, and several papillomaviruses...
January 15, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28100401/modelling-the-long-term-evolution-of-worst-case-arctic-oil-spills
#17
Hauke Blanken, Louis Bruno Tremblay, Susan Gaskin, Alexander Slavin
We present worst-case assessments of contamination in sea ice and surface waters resulting from hypothetical well blowout oil spills at ten sites in the Arctic Ocean basin. Spill extents are estimated by considering Eulerian passive tracers in the surface ocean of the MITgcm (a hydrostatic, coupled ice-ocean model). Oil in sea ice, and contamination resulting from melting of oiled ice, is tracked using an offline Lagrangian scheme. Spills are initialized on November 1st 1980-2010 and tracked for one year. An average spill was transported 1100km and potentially affected 1...
January 15, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28100230/seroprevalence-of-toxoplasma-gondii-infection-in-feral-cats-in-qatar
#18
Sonia Boughattas, Jerzy Behnke, Aarti Sharma, Marawan Abu-Madi
BACKGROUND: Cats are essential in the life cycle of Toxoplasma gondii as they can shed the environmentally resistant oocysts after acquiring infection. Human populations living in cities with high densities of feral cats are therefore likely to be at risk of infection. The current study is the first to estimate the seroprevalence of T. gondii in the feral cat population in Qatar. We investigated the seroprevalence of T. gondii among 495 adult cats from urban and suburban districts in Qatar...
January 18, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28100179/exploring-surface-cleaning-strategies-in-hospital-to-prevent-contact-transmission-of-methicillin-resistant-staphylococcus-aureus
#19
Hao Lei, Rachael M Jones, Yuguo Li
BACKGROUND: Cleaning of environmental surfaces in hospitals is important for the control of methicillin-resistant Staphylococcus aureus (MRSA) and other hospital-acquired infections transmitted by the contact route. Guidance regarding the best approaches for cleaning, however, is limited. METHODS: In this study, a mathematical model based on ordinary differential equations was constructed to study MRSA concentration dynamics on high-touch and low-touch surfaces, and on the hands and noses of two patients (in two hospitals rooms) and a health care worker in a hypothetical hospital environment...
January 18, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28100131/influence-of-activated-sewage-sludge-amendment-on-pahs-removal-efficiency-from-a-naturally-contaminated-soil-application-of-the-landfarming-treatment
#20
Borislava Lukić, David Huguenot, Antonio Panico, Eric D van Hullebusch, Giovanni Esposito
The removal of polycyclic aromatic hydrocarbons (PAHs) from a naturally co-contaminated soil by PAHs and heavy metals with an initial concentration of 620 mg of total PAHs kg(-1) dry soil was investigated. The efficiency of landfarming in removing phenanthrene, pyrene, benzo(a)pyrene and the group of total 16 US EPA PAHs was evaluated. The process was biostimulated by adding centrifuged activated sewage sludge (SS) as an organic amendment. Experimental activities were conducted in four laboratory scale reactors filled with corn cobs as bulking agent to reach bulk density of 640 kg/m(3)...
January 18, 2017: Environmental Technology
keyword
keyword
7980
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"