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https://www.readbyqxmd.com/read/28340462/assessment-of-arsenic-and-fluorine-in-surface-soil-to-determine-environmental-and-health-risk-factors-in-the-comarca-lagunera-mexico
#1
Yareli A Sariñana-Ruiz, Jorge Vazquez-Arenas, Fabiola S Sosa-Rodríguez, Israel Labastida, Ma Aurora Armienta, Antonio Aragón-Piña, Miguel A Escobedo-Bretado, Laura S González-Valdez, Patricia Ponce-Peña, Hugo Ramírez-Aldaba, René H Lara
Total, bioaccessible and mobile concentrations of arsenic and fluorine are determined in polluted surface soil within the Comarca Lagunera region using standardized protocols to obtain a full description of the environmental behavior for these elements. The composition of mineral phases associated with them is evaluated with microscopic and spectroscopic techniques. Mineralogical characterizations indicate that ultra-fine particles (<1-5 μm) including mimetite-vanadite (Pb5(AsO4)3Cl, Pb5(AsO4, VO4)3Cl)-like, lead arseniate (Pb3(AsO4)2)-like and complex arsenic-bearing compounds are main arsenic-bearing phases, while fluorite (CaF2) is the only fluorine-bearing phase...
March 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28340437/assessment-of-microalga-biofilms-for-simultaneous-remediation-and-biofuel-generation-in-mine-tailings-water
#2
H Palma, E Killoran, M Sheehan, F Berner, K Heimann
Microalgae crops can generate a biochemical profile of high energy density and may be used for remediation of contaminated waste waters. This manuscript presents a laboratory-scale investigation into the potential for growing endemic microalgae biofilms in phosphorus-enriched nickel refinery tailings water, with an emphasis on product potential and the remediation of heavy metals. The dominant species of the consortia was a Chlorella-like microalga. The growth was monitored over time, with a productivity (0...
March 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28340388/evaluation-of-cr-vi-reduction-mechanism-and-removal-by-cellulosimicrobium-funkei-strain-ar8-a-novel-haloalkaliphilic-bacterium
#3
Chinnannan Karthik, Selvaraj Barathi, Arivalagan Pugazhendhi, Vijayan Sri Ramkumar, Ngoc Bao Dung Thi, Padikasan Indra Arulselvi
The present study, a novel haloalkaliphilic Cr(VI) tolerant bacterial strain, Cellulosimicrobium funkei AR8, was isolated and characterized for its high Cr(VI) reduction. In batch experiments, Cr(VI) reduction was evaluated under different parametric conditions which include different pH (5-9), temperature (25-45°C), NaCl (0-3%) and Cr(VI) concentrations (100-250μg/ml). Variations in the cell surface functional groups and morphology of the bacterial cells after Cr(VI) reduction were characterized by FT-IR and SEM-EDX...
March 18, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28339775/mining-non-lattice-subgraphs-for-detecting-missing-hierarchical-relations-and-concepts-in-snomed-ct
#4
Licong Cui, Wei Zhu, Shiqiang Tao, James T Case, Olivier Bodenreider, Guo-Qiang Zhang
Objective: Quality assurance of large ontological systems such as SNOMED CT is an indispensable part of the terminology management lifecycle. We introduce a hybrid structural-lexical method for scalable and systematic discovery of missing hierarchical relations and concepts in SNOMED CT. Material and Methods: All non-lattice subgraphs (the structural part) in SNOMED CT are exhaustively extracted using a scalable MapReduce algorithm. Four lexical patterns (the lexical part) are identified among the extracted non-lattice subgraphs...
February 19, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28339739/unabated-occupational-risk-in-a-patient-with-rheumatoid-pulmonary-fibrosis
#5
V K Holden, S J Kligerman, T G Hastings, S E Hines
Background: This case highlights the importance of considering hypersensitivity pneumonitis (HP) in the differential diagnosis of interstitial lung disease (ILD) and of obtaining an occupational history so that remediable risk factors may be identified and managed. Aims: To report a case of a chicken sexer with severe rheumatoid arthritis (RA) who developed progressively worsening dyspnoea and restrictive lung disease associated with pulmonary fibrosis. Methods: Clinical investigation included physical examination, occupational history, pulmonary function tests (PFTs), chest imaging and bronchoalveolar lavage (BAL), as well as serological tests including standard IgE bird feather mixture and local IgG precipitin preparation to chicken excrement...
February 23, 2017: Occupational Medicine
https://www.readbyqxmd.com/read/28335468/differential-degradation-and-detoxification-of-an-aromatic-pollutant-by-two-different-peroxidases
#6
Aysha Hamad Alneyadi, Iltaf Shah, Synan F AbuQamar, Syed Salman Ashraf
Enzymatic degradation of organic pollutants is a new and promising remediation approach. Peroxidases are one of the most commonly used classes of enzymes to degrade organic pollutants. However, it is generally assumed that all peroxidases behave similarly and produce similar degradation products. In this study, we conducted detailed studies of the degradation of a model aromatic pollutant, Sulforhodamine B dye (SRB dye), using two peroxidases-soybean peroxidase (SBP) and chloroperoxidase (CPO). Our results show that these two related enzymes had different optimum conditions (pH, temperature, H₂O₂ concentration, etc...
March 18, 2017: Biomolecules
https://www.readbyqxmd.com/read/28335429/the-adverse-effect-of-hypertension-in-the-treatment-of-thyroid-cancer-with-multi-kinase-inhibitors
#7
REVIEW
Ole Vincent Ancker, Markus Wehland, Johann Bauer, Manfred Infanger, Daniela Grimm
The treatment of thyroid cancer has promising prospects, mostly through the use of surgical or radioactive iodine therapy. However, some thyroid cancers, such as progressive radioactive iodine-refractory differentiated thyroid carcinoma, are not remediable with conventional types of treatment. In these cases, a treatment regimen with multi-kinase inhibitors is advisable. Unfortunately, clinical trials have shown a large number of patients, treated with multi-kinase inhibitors, being adversely affected by hypertension...
March 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28334674/organochlorine-pesticides-in-soil-air-and-vegetation-at-and-around-a-contaminated-site-in-southwestern-china-concentration-transmission-and-risk-evaluation
#8
Yanyan Fang, Zhiqiang Nie, Qingqi Die, Yajun Tian, Feng Liu, Jie He, Qifei Huang
Remediation and management of contaminated sites have become a prevalent problem under the current situation in China. The present study was conducted to investigate the concentration, transmission, and health risk of organochlorine pesticides (OCPs) in soil, air, and vegetation at and around a typical pesticide-contaminated site located in southwestern China. Exchange flux between soil and air was calculated to investigate the transmission of OCPs. Hexachlorocyclohexane (ΣHCHs, top soil: 19.1 mg/kg d.w., air: 52...
March 1, 2017: Chemosphere
https://www.readbyqxmd.com/read/28334283/the-microbiology-of-oil-sands-tailings-past-present-future
#9
Julia M Foght, Lisa M Gieg, Tariq Siddique
Surface mining of enormous oil sands deposits in northeastern Alberta, Canada since 1967 has contributed greatly to Canada's economy but has also received negative international attention due largely to environmental concerns and challenges. Not only have microbes profoundly affected the composition and behaviour of this petroleum resource over geological time, they currently influence the management of semi-solid tailings in oil sands tailing ponds (OSTP) and tailings reclamation. Historically, microbial impacts on OSTP were generally discounted but next-generation sequencing and biogeochemical studies have revealed unexpectedly diverse indigenous communities and expanded our fundamental understanding of anaerobic microbial functions...
March 9, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28333052/pmma-titania-floating-macrospheres-for-the-photocatalytic-remediation-of-agro-pharmaceutical-wastewater
#10
Adam C Hartley, Joseph B Moss, Kyle J Keesling, Nathanael J Moore, Justin D Glover, Joel E Boyd
Antibiotics such as tetracycline are used on a large scale in agriculture, and can become concentrated in wastewater lagoons that are used in conjunction with confined animal feeding operations. Solar-illuminated titanium dioxide can be used to photocatalytically degrade aqueous tetracycline, but its application in a lagoon environment requires that the photocatalyst be supported on a macroscopic support material to prevent loss of the nanoscale photocatalyst into the environment. In this work, titanium dioxide was deposited within a porous poly(methyl methacrylate) film on the surface of floating 7...
March 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28332760/cytotoxic-essential-oils-from-eryngium-campestre-and-eryngium-amethystinum-apiaceae-growing-in-central-italy
#11
Kevin Cianfaglione, Evy E Blomme, Luana Quassinti, Massimo Bramucci, Giulio Lupidi, Stefano Dall'Acqua, Filippo Maggi
Eryngium campestre and E. amethystinum are thorny herbs belonging to the Apiaceae family and spontaneously growing in stony pastures and dry meadows, preferentially on calcareous substrates. In the Mediterranean countries, these plants have been used as a food or traditional remedies to treat various ailments. In the present work, we have analysed the chemical composition of the essential oils distilled from the aerial parts by GC-FID and GC-MS, and evaluated their cytotoxic effects on a panel of human cancer cells, namely A375 (human malignant melanoma), MDA-MB 231 cells (human breast adenocarcinoma) and HCT116 cells (human colon carcinoma), by the MTT assay...
March 23, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28332602/silver-metal-nano-matrixes-as-high-efficiency-and-versatile-catalytic-reactors-for-environmental-remediation
#12
Ludovic F Dumée, Zhifeng Yi, Blaise Tardy, Andrea Merenda, Elise des Ligneris, Ray R Dagastine, Lingxue Kong
Nano-porous metallic matrixes (NMMs) offer superior surface to volume ratios as well as enhanced optical, photonic, and electronic properties to bulk metallic materials. Such behaviours are correlated to the nano-scale inter-grain metal domains that favour the presence of electronic vacancies. In this work, continuous 3D NMMs were synthesized for the first time through a simple diffusion-reduction process whereby the aerogel matrix was functionalized with (3-Mercaptopropyl)trimethoxysilane. The surface energy of the silica monolith templates was tuned to improve the homogeneity of the reduction process while thiol functionalization facilitated the formation of a high density of seeding points for metal ions to reduce...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332174/effects-of-carbon-nanotube-and-biochar-on-bioavailability-of-pb-cu-and-sb-in-multi-metal-contaminated-soil
#13
Meththika Vithanage, Indika Herath, Yaser A Almaroai, Anushka Upamali Rajapaksha, Longbin Huang, Jwa-Kyung Sung, Sang Soo Lee, Yong Sik Ok
This study examined the effects of carbon nanotube and biochar on the bioavailability of Pb, Cu and Sb in the shooting range soils for developing low-cost remediation technology. Commercially available multi-walled carbon nanotube (MWCNT) and biochar pyrolyzed from soybean stover at 300 °C (BC) at 0.5, 1 and 2.5% (w w(-1)) were used to remediate the contaminated soil in an incubation experiment. Both DTPA (bioavailable) and TCLP (leaching) extraction procedures were used to compare the metal/loid availability and leaching by the amendments in soil...
March 22, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28331913/biological-properties-and-chemical-composition-of-jatropha-neopauciflora-pax
#14
A B Hernández-Hernández, F J Alarcón-Aguilar, M Jiménez-Estrada, L B Hernández-Portilla, C M Flores-Ortiz, M A Rodríguez-Monroy, M Canales-Martínez
BACKGROUND: Ethnopharmacological relevance. Jatropha neopauciflora (Pax) is an endemic species of the Tehuacan- Cuicatlan Valley, Mexico. This species has long been used as a remedy to alleviate illnesses of bacterial, fungal and viral origin. Aim of the study. Experimentally test the traditional use of Jatropha neopauciflora in Mexican traditional medicine. MATERIALS AND METHODS: The methanol extract (MeOH1), of Jatropha neopauciflora (Euphorbiaceae) was obtained by maceration...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28331247/unintentional-childhood-injuries-in-urban-delhi-a-community-based-study
#15
Giridara Gopal Parmeswaran, Mani Kalaivani, Sanjeev Kumar Gupta, Anil Kumar Goswami, Baridalyne Nongkynrih
BACKGROUND: Childhood injuries claim around a million lives around the world each year. A community-based study on childhood injuries would provide valuable information on the epidemiology of injuries. OBJECTIVE: To assess the prevalence of unintentional childhood injuries in an urban locality and determine various sociodemo graphic factors associated with childhood injuries. METHODS: The study was done in urban Delhi among 1,639 children aged less than 18 years...
January 2017: Indian Journal of Community Medicine
https://www.readbyqxmd.com/read/28331217/geographic-distribution-of-cadmium-and-its-interaction-with-the-microbial-community-in-the-longjiang-river-risk-evaluation-after-a-shocking-pollution-accident
#16
MingJiang Zhang, FuKe Huang, GuangYuan Wang, XingYu Liu, JianKang Wen, XiaoSheng Zhang, YaoSi Huang, Yu Xia
A shocking Longjiang River cadmium pollution accident occurred in 2012, the effects of which on microbial communities remain unclear. Alkaline precipitation technology was applied for remediation, but concerns rose about the stability of this technology. To understand the geographic distribution of cadmium and its correlation with microbes, in this study, 39 water samples and 39 sludge samples from this river and 2 soil samples from the nearby farmland were collected for chemical and microbial analyses. The Cd concentrations of all water samples were lower than 0...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28330972/fatal-cerebral-edema-with-status-epilepticus-in-children-with-dravet-syndrome-report-of-5-cases
#17
Kenneth A Myers, Jacinta M McMahon, Simone A Mandelstam, Mark T Mackay, Renate M Kalnins, Richard J Leventer, Ingrid E Scheffer
Dravet syndrome (DS) is a well-recognized developmental and epileptic encephalopathy associated with SCN1A mutations and 15% mortality by 20 years. Although over half of cases succumb to sudden unexpected death in epilepsy, the cause of death in the remainder is poorly defined. We describe the clinical, radiologic, and pathologic characteristics of a cohort of children with DS and SCN1A mutations who developed fatal cerebral edema causing mass effect after fever-associated status epilepticus. Cases were identified from a review of children with DS enrolled in the Epilepsy Genetics Research Program at The University of Melbourne, Austin Health, who died after fever-associated status epilepticus...
March 22, 2017: Pediatrics
https://www.readbyqxmd.com/read/28330725/a-botanical-phytochemical-and-ethnomedicinal-review-of-the-genus-mitragyna-korth-implications-for-products-sold-as-kratom
#18
REVIEW
Paula N Brown, Jensen A Lund, Susan J Murch
ETHNOPHARMACOLOGICAL RELEVANCE: The genus Mitragyna (Rubiacaeae) has been traditionally used in parts of Africa, Asia and Oceania. In recent years, there has been increased interest in species of Mitragyna with the introduction of products to western markets and regulatory uncertainty. AIM OF THE STUDY: This paper reviewed the traditional ethnomedicinal uses of leaves for species belonging to the genus Mitragyna with reference to the botany and known chemistry in order to highlight areas of interest for products currently being sold as kratom...
March 18, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28330318/brevibacillus-borstelensis-and-streptomyces-albogriseolus-have-roles-to-play-in-degradation-of-herbicide-sulfosulfuron
#19
Ridhima Arya, Navnit Kumar Mishra, Anil K Sharma
Use of herbicides, in particular sulfosulfuron, at more than recommended doses has raised major concerns about the health hazards for animals and humans. In the present study, isolation of sulfosulfuron-degrading Brevibacillus borstelensis and Streptomyces albogriseolus from the field soils in the northwestern region of India was carried out where the use of sulfosulfuron is predominant, and further assessed for their potential to degrade sulfosulfuron individually and together in a consortium form under lab conditions...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330262/biodegradation-of-isoproturon-by-pseudoxanthomonas-sp-isolated-from-herbicide-treated-wheat-fields-of-tarai-agro-ecosystem-pantnagar
#20
Krishna Giri, Shailseh Pandey, Rajesh Kumar, J P N Rai
A gram-negative, rod-shaped, isoproturon (IPU) utilizing bacterium was isolated from herbicide-applied wheat fields of Tarai agro-ecosystem, Pantnagar. The phylogenetic sequence analysis based on 16S rRNA sequence revealed that the isolate could be a distinct species within the genus Pseudomonas. The isolate was a close relative of Pseudoxanthomonas japonensis (95 % similarity) and designated as K2. The bacterial isolate showed positive reaction for oxidase, catalase, and 20 carbohydrates using KB009 Part A and B HiCarbohydrate™ Kit...
December 2016: 3 Biotech
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