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https://www.readbyqxmd.com/read/28214111/remediation-of-contaminated-lands-in-the-niger-delta-nigeria-prospects-and-challenges
#1
REVIEW
Nenibarini Zabbey, Kabari Sam, Adaugo Trinitas Onyebuchi
Contamination of the total environment (air, soil, water and biota) by crude oil has become a paramount interest in the Niger Delta region of Nigeria. Studies have revealed variable impacts of oil toxicity on the environment and exposed populations. The revelation gained much international attention in 2011 with the release of Environmental Assessment of Ogoniland report by the United Nations Environment Programme (UNEP). This has up scaled local and international pressures for urgent clean-up and restoration of degraded bio-resource rich environments of the Niger Delta, starting from Ogoniland...
February 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28209408/household-air-pollution-from-various-types-of-rural-kitchens-and-its-exposure-assessment
#2
Maninder Kaur Sidhu, Khaiwal Ravindra, Suman Mor, Siby John
Exposure to household air pollutants has become a leading environmental health risk in developing countries. Considering this, real-time temporal variation in fine particulate matter (PM2.5) and carbon monoxide (CO) concentrations were measured in various types of rural household kitchens. Observed average concentrations of PM2.5, CO, percent relative humidity (%RH) and temperature (T) in five different kitchen types were 549.6μg/m(3), 4.2ppm, 70.2% and 20°C respectively. Highest CO and PM2.5 concentration were found in household performing cooking in indoor kitchens (CO: 9...
February 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28207081/can-we-be-too-clean-for-our-own-good-the-hygiene-hypothesis-reviewed
#3
Sheenal Patel, Rebecca Gruchalla
The hygiene hypothesis began as an attempt to explain the relatively rapid rise in atopic diseases. Strachan's early hypothesis regarding the role of family size and exposure to early childhood infections in the development of atopic diseases has clearly evolved to integrate the possible effects of hygiene, eradication of parasitic infections, immunizations, improvements in home heating and ventilation, dust mite exposure, breastfeeding duration, diet, parental smoking, pollution, and exposure to pets and farm animals...
February 1, 2017: Texas Medicine
https://www.readbyqxmd.com/read/28196720/village-energy-survey-reveals-missing-rural-raw-coal-in-northern-china-significance-in-science-and-policy
#4
Guorui Zhi, Yayun Zhang, Jianzhong Sun, Miaomiao Cheng, Hongyan Dang, Shijie Liu, Junchao Yang, Yuzhe Zhang, Zhigang Xue, Shuyuan Li, Fan Meng
Burning coal for winter heating has been considered a major contributor to northern China's winter haze, with the district heating boilers holding the balance. However a decade of intensive efforts on district heating boilers brought few improvements to northern China's winter air quality, arousing a speculation that the household heating stoves mainly in rural area rather than the district heating boilers mainly in urban area dominate coal emissions in winter. This implies an extreme underestimation of rural household coal consumption by the China Energy Statistical Yearbooks (CESYs), although direct evidence supporting this speculation is lacking...
February 10, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28185220/polycyclic-aromatic-hydrocarbons-pahs-in-surface-sediments-near-a-mining-site-in-okobo-enjema-nigeria-concentrations-source-apportionment-and-risk-assessment
#5
Kenechukwu E Ugwu, Pius O Ukoha
PAHs are pollutants of serious environmental and human health concerns. PAH studies in environmental compartments may assist in designing PAH control measures. The levels of selected PAHs in surface sediment samples of a stream near a mining site at Okobo-Enjema, Nigeria, were investigated. The data were used to determine the possible sources of the PAHs and to assess the potential health risk of the PAHs to humans which was evaluated based on the sediment quality, contamination level and cancer risk guidelines...
February 9, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28178955/the-management-of-the-faeces-passed-by-under-five-children-an-exploratory-cross-sectional-research-in-an-urban-community-in-southwest-nigeria
#6
Olufemi Oludare Aluko, Olusegun Temitope Afolabi, Emmanuel Abiodun Olaoye, Adeyinka Daniel Adebayo, Seun Oladele Oyetola, Oluwaseun Olamide Abegunde
BACKGROUND: Safe management of faeces (SMoF) and environmental contamination by faecal pathogens have been extensively researched although the SMoF in under-five children has been perennially neglected perhaps due to the misconception that it is harmless. This research, therefore, studied the situation, to determine the magnitude and dimensions of the problem aimed at making policy level stakeholders aware of child faeces management systems and so, inform evidence-based implementation of child and health-related programmes in Nigeria...
February 8, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28177604/green-in-situ-synthesis-of-clean-3d-chestnutlike-ag-wo3-x-nanostructures-for-highly-efficient-recyclable-and-sensitive-sers-sensing
#7
Jian Huang, Dayan Ma, Feng Chen, Dongzhen Chen, Min Bai, Kewei Xu, Yongxi Zhao
Surface-enhanced Raman scattering (SERS) has proven to be an effective technique for identifying and providing fingerprint structural information on various analytes in low concentration. However, this analytical technique has been plagued by the ubiquitous presence of organic contaminants on roughened SERS substrate surfaces, which not only often result in poorer detection sensitivity but also significantly affect the reproducibility and accuracy of SERS analysis. Herein, we developed a clean, stable, and recyclable three-dimensional (3D) chestnutlike Ag/WO3-x (0 < x < 0...
February 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28169030/association-of-pm2-5-with-diabetes-asthma-and-high-blood-pressure-incidence-in-canada-a-spatiotemporal-analysis-of-the-impacts-of-the-energy-generation-and-fuel-sales
#8
Weeberb J Requia, Matthew D Adams, Petros Koutrakis
Numerous studies have reported an association between fine particulate matter (PM2.5) and human health. Often these relationships are influenced by environmental factor that varies spatially and/or temporally. To our knowledge, there are no studies in Canada that have considered energy generation and fuel sales as PM2.5 effects modifiers. Determining exposure and disease-specific risk factors over space and time is crucial for disease prevention and control. In this study, we evaluated the association of PM2...
February 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28163252/the-legacy-pesticide-dieldrin-acts-as-a-teratogen-and-alters-the-expression-of-dopamine-transporter-and-dopamine-receptor-2a-in-zebrafish-danio-rerio-embryos
#9
Kathleena I Sarty, Andrew Cowie, Christopher J Martyniuk
Dieldrin (DLD) is a lipophilic pesticide that shows environmental persistence. The objectives were to determine the effects of DLD on GABAergic and dopaminergic systems in developing zebrafish. Both chorionated and dechorionated embryos (~24h post-hatch) were exposed to a single concentration of DLD (0.347-3470μM) for 48h. Following exposure, a subset of larvae was placed into clean water for 6days (i.e. depuration phase). Chorionated embryos showed <15% mortality while dechorionated embryos showed higher mortality (>30%), suggesting that the chorion protected the embryos...
February 3, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28157767/paresthesias-among-community-members-exposed-to-the-world-trade-center-disaster
#10
Michael Marmor, Yongzhao Shao, D Harshad Bhatt, Mark M Stecker, Kenneth I Berger, Roberta M Goldring, Rebecca L Rosen, Caralee Caplan-Shaw, Angeliki Kazeros, Deepak Pradhan, Marc Wilkenfeld, Joan Reibman
OBJECTIVE: Paresthesias can result from metabolic disorders, nerve entrapment following repetitive motions, hyperventilation pursuant to anxiety, or exposure to neurotoxins. We analyzed data from community members exposed to the World Trade Center (WTC) disaster of September 11, 2001, to evaluate whether exposure to the disaster was associated with paresthesias. METHODS: Analysis of data from 3141 patients of the WTC Environmental Health Center. RESULTS: Fifty-six percent of patients reported paresthesias at enrollment 7 to 15 years following the WTC disaster...
February 2, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28153288/a-simple-and-fast-double-flow-microfluidic-device-based-liquid-phase-microextraction-df-%C3%A2%C2%B5lpme-for-the-determination-of-parabens-in-water-samples
#11
María Ramos-Payan, Santiago Maspoch, Andreu Llobera
A fast double-flow microfluidic based liquid phase microextraction (DF-µLPME) combined with a HPLC-UV procedure using diode array detection has been developed for the determination of the four most widely used parabens: Ethyl 4-hydroxybenzoate (EtP), Propyl 4-hydroxybenzoate (PrP), Butyl 4-hydroxybenzoate (BuP) and IsoButyl 4-hydroxybenzoate (iBuP) in water samples. Parabens have successfully been determined in environmental (lake and river water) samples with excellent clean up, high extraction efficiency and good enrichment factor using double-flow conditions...
April 1, 2017: Talanta
https://www.readbyqxmd.com/read/28153271/copper-nanowire-coated-carbon-fibers-as-efficient-substrates-for-detecting-designer-drugs-using-sers
#12
Vladimir Halouzka, Barbora Halouzkova, David Jirovsky, Dusan Hemzal, Peter Ondra, Eirini Siranidi, Athanassios G Kontos, Polycarpos Falaras, Jan Hrbac
Miniature Surface Enhanced Raman Scattering (SERS) sensors were fabricated by coating the carbon fiber microelectrodes with copper nanowires. The coating procedure, based on anodizing the copper wire in ultrapure water followed by cathodic deposition of the anode-derived material onto carbon fiber electrodes, provides a "clean" copper nanowire network. The developed miniature (10µm in diameter and 2mm in length) and nanoscopically rough SERS substrates are applicable in drug sensing, as shown by the detection and resolving of a range of seized designer drugs in trace amounts (microliter volumes of 10(-10)-10(-12)M solutions)...
April 1, 2017: Talanta
https://www.readbyqxmd.com/read/28153263/quechers-extraction-for-multi-residue-analysis-of-pcbs-pahs-pbdes-and-pcdd-fs-in-biological-samples
#13
Pierre-Luc Cloutier, Frédérik Fortin, Paule Emilie Groleau, Pauline Brousseau, Michel Fournier, Mélanie Desrosiers
In this study, a fast and rugged method is presented for the analysis of PCBs, PAHs, PBDEs and PCDD/Fs in biological tissues using a simple Quick, Easy, Cheap, Efficient, Rugged and Safe (QuEChERS) extraction and a clean-up by Gel Permeation Chromatography (GPC) and silica Solid Phase Extraction (SPE). Development was performed on blue mussels (Mytilus edulis) and Atlantic salmon (Salmo salar) for evaluation of two ranges of lipid and water content of biological tissues. Statistical validation was performed with Atlantic salmon samples...
April 1, 2017: Talanta
https://www.readbyqxmd.com/read/28151567/first-molecular-epidemiology-of-entamoeba-histolytica-e-dispar-and-e-moshkovskii-infections-in-yemen-different-species-specific-associated-risk-factors
#14
Mona A Al-Areeqi, Hany Sady, Hesham M Al-Mekhlafi, Tengku Shahrul Anuar, Abdulelah H Al-Adhroey, Wahib M Atroosh, Salwa Dawaki, Fatin Nur Elyana, Nabil A Nasr, Init Ithoi, Yee-Ling Lau, Johari Surin
OBJECTIVES: To investigate the molecular epidemiology of Entamoeba histolytica, E. dispar and E. moshkovskii infections among rural communities in Yemen. METHODS: In a community-based study, faecal samples were collected from 605 participants and examined by wet mount, formalin-ether sedimentation, trichrome staining and nested multiplex PCR techniques. Demographic, socioeconomic and environmental information was collected by using a pre-tested questionnaire. RESULTS: Overall, 324 (53...
February 2, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28150903/recent-progresses-on-metal-organic-frameworks-and-their-derived-nanostructures-for-energy-and-environmental-applications
#15
Zhiqiang Xie, Wangwang Xu, Xiaodan Cui, Ying Wang
Metal-organic frameworks (MOFs), as a very promising category of porous materials, have attracted more and more interest in research communities due to their extremely high surface areas, diverse nanostructures and unique properties. In recent years, there is a growing body of evidence indicating that MOFs can function as ideal templates to prepare various nanostructured materials for energy and environmental cleaning applications. This work reviews the recent progresses in design and synthesis of MOFs and MOF-derived nanomaterials for particular applications in lithium-ion batteries, sodium-ion batteries, supercapacitors, dye-sensitized solar cells and heavy metal ions detection and removal...
February 2, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28142114/the-response-of-earthworms-eisenia-fetida-and-soil-microbes-to-the-crumb-rubber-material-used-in-artificial-turf-fields
#16
Sharon T Pochron, Andrew Fiorenza, Cassandra Sperl, Brianne Ledda, Charles Lawrence Patterson, Clara C Tucker, Wade Tucker, Yuwan Lisa Ho, Nicholas Panico
Municipalities have been replacing grass fields with artificial turf, which uses crumb rubber infill made from recycled tires. Crumb rubber contains hydrocarbons, organic compounds, and heavy metals. Water runoff from crumb rubber fields contains heavy metals. These components can damage the environment. We contaminated topsoil with new crumb rubber and measured its impact on earthworms and soil microbes. Specifically, we compared soil microbe activity and earthworm health, survivorship, and longevity in heat and light stress under two soil regimes: clean topsoil and clean topsoil contaminated with crumb rubber...
January 21, 2017: Chemosphere
https://www.readbyqxmd.com/read/28134674/clostridium-difficile-infection-an-orthopaedic-surgeon-s-guide-to-epidemiology-management-and-prevention
#17
Paul A Anderson, James Bernatz, Nasia Safdar
Clostridium difficile infection is a growing concern in health care and is a worrisome complication in orthopaedics. The incidence and severity of this infection are increasing, although the incidence following orthopaedic surgery is comparatively lower than that seen in patients in most other surgical specialties. The typical geriatric orthopaedic patient may have many risk factors that increase the likelihood of C difficile infection, including advanced age, residence in a long-term care facility, multiple comorbidities, the use of perioperative antibiotics, and a long length of stay...
March 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28130229/genome-wide-analysis-of-dna-methylation-profiles-in-a-senescence-accelerated-mouse-prone-8-brain-using-whole-genome-bisulfite-sequencing
#18
Shuai Zhang, Chunxia Qin, Guoqiong Cao, Limin Guo, Chengqiang Feng, Wensheng Zhang
MOTIVATION: The pathogenesis of AD is complex and contributed by both genetic and environmental factors. Recent work revealed a potential link between DNA methylation and AD. However, a genome-wide study to identify potential DNA methylation sites involved in AD is still at an early stage. WGBS, an up-to-date technology, was used in this study. We investigated mouse brain genome-wide DNA methylation profiles between seven-month-old SAMP8 and SAMR1 models through deep WGBS. RESULTS: According to the results, the global ML slightly decreased in the SAMP8 mice than in the SAMR1 mice (4...
January 27, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28129613/an-evaluation-of-different-soil-washing-solutions-for-remediating-arsenic-contaminated-soils
#19
Yiwen Wang, Fujun Ma, Qian Zhang, Changsheng Peng, Bin Wu, Fasheng Li, Qingbao Gu
Soil washing is a promising way to remediate arsenic-contaminated soils. Most research has mostly focused on seeking efficient extractants for removing arsenic, but not concerned with any changes in soil properties when using this technique. In this study, the removal of arsenic from a heavily contaminated soil employing different washing solutions including H3PO4, NaOH and dithionite in EDTA was conducted. Subsequently, the changes in soil physicochemical properties and phytotoxicity of each washing technique were evaluated...
January 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28127350/uncommon-human-urinary-tract-myiasis-due-to-psychoda-sp-larvae-kashan-iran-a-case-report
#20
Sima Rasti, Rouhullah Dehghani, Hassan Naeimi Khaledi, Sayed Mahdi Takhtfiroozeh, Elahe Chimehi
Contamination of human and animal body tissues with flies' larvae and diptera cause myiasis. A 26 yr old female patient refers to Kashan Shahid Beheshti Hospital, central Iran because of urogenital infection, pain in the right part of stomach, smelly and reddish vaginal discharge and frequent urination. In the first checking, urine sample was taken. In the sample, active and alive larvae were seen. The live samples were taken to the Environmental Health Department Lab of Kashan University of Medical Sciences in clean glass jars...
July 2016: Iranian Journal of Parasitology
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