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https://www.readbyqxmd.com/read/27918340/obstetrical-anal-sphincter-injuries-does-obstetrical-care-provider-matter-a-quality-assurance-study-in-ontario
#1
Katerina Pizzuto, Jessica Pudwell, Graeme N Smith, Marie-Andrée Harvey
OBJECTIVES: We sought to determine the rates of obstetrical anal sphincter tears (OASIS) between types of obstetrical care providers at Kingston General Hospital (KGH) and in Ontario via the Better Outcomes Registry Network (BORN). METHODS: This cross-sectional study collected patient, demographic, and delivery data from all vaginal deliveries at KGH from June 2011 to June 2014 and all vaginal deliveries through the BORN database from June 2012 to June 2014. RESULTS: During this period, 4...
December 1, 2016: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/27917012/enhanced-photocatalytic-electrochemical-and-photoelectrochemical-properties-of-tio2-nanotubes-arrays-modified-with-cu-agcu-and-bi-nanoparticles-obtained-via-radiolytic-reduction
#2
Michał Nischk, Paweł Mazierski, Zhishun Wei, Katarzyna Siuzdak, Natalie Amoin Kouame, Ewa Kowalska, Hynd Remita, Adriana Zaleska-Medynska
TiO2 nanotubes arrays (NTs), obtained via electrochemical anodization of Ti foil, were modified with monometallic (Cu, Bi) and bimetallic (AgCu) nanoparticles. Different amounts of metals' precursors were deposited on the surface of NTs by the spin-coating technique, and the reduction of metals was performed via gamma radiolysis. Surface modification of titania was studied by EDS and XPS analysis. The results show that AgCu nanoparticles exist in a Agcore-Cushell form. Photocatalytic activity was examined under UV irradiation and phenol was used as a model pollutant of water...
November 30, 2016: Applied Surface Science
https://www.readbyqxmd.com/read/27916494/a-novel-solid-digestate-derived-biochar-cu-np-composite-activating-h2o2-system-for-simultaneous-adsorption-and-degradation-of-tetracycline
#3
Dun Fu, Zheng Chen, Dong Xia, Liang Shen, Yuanpeng Wang, Qingbiao Li
Solid digestate, a by-product of anaerobic digestion systems, has led to a range of environmental issues. In the present study, a novel composite based on a solid digestate-biochar-Cu NP composite was synthesized for tetracycline removal from an aqueous medium. The removal efficiency values for tetracycline (200 mg L(-1)) were 31.5% and 97.8%, respectively, by the biochar-Cu NP composite (0.5 g L(-1)) in the absence and presence of hydrogen peroxide (H2O2, 20 mM) within 6 h of reaction time. The possible degradation pathway of tetracycline was investigated using liquid chromatography-mass spectrometry...
December 1, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27913890/performance-improvement-of-raw-water-pretreatment-process-with-pre-inoculation-biofilm-feasibility-and-limiting-factors
#4
Guang-Feng Yang, Li-Juan Feng, Cai-Rong Guo, Tian Xia, Xiang-Yang Xu, Liang Zhu
The initial formation of biofilm and the removal performance of pollutants in biological pretreatment process for polluted raw water were limited due to the oligotrophic niche in raw water. In this study, the feasibility of using pre-inoculation biofilm formed under nutrients enhanced condition for polluted raw water treatment was analyzed in nine batch reactors. Results showed that the pollutants removal performance of biofilm was improved under nutrients enhanced conditions. Ammonia oxidation rate (AOR) was exponentially increased with the increasing in NH4(+)-N levels, and organic matter removal rate (ORR) was positively related to the initial total organic carbon (TOC) concentration...
December 2, 2016: Biodegradation
https://www.readbyqxmd.com/read/27908622/biomonitoring-of-persistent-organic-pollutants-pops-in-child-populations-living-near-contaminated-sites-in-mexico
#5
R Flores-Ramírez, F J Pérez-Vázquez, M Rodríguez-Aguilar, S E Medellín-Garibay, E Van Brussel, A C Cubillas-Tejeda, L Carrizales-Yáñez, F Díaz-Barriga
The aim of this study was to conduct a POP biomonitoring programme for children in high-risk areas. We evaluated 247 serum samples from children between the ages of 6 and 12years old from two zones in Mexico: (1) indigenous zones, which included Cuatlamayan (CUA), Tocoy (TOC), and Santa Maria Picula (SAM); and (2) industrial zones, which included Tercera Chica (TC), Industrial San Luis (IND) and Rincon de San Jose (SJR); Mundo Nuevo (MN); and Alpuyeca (ALP). Our results showed that α-endosulfan was similar to CUA, TOC, SAM, TC and MN (178...
November 28, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27907844/oxidation-of-atrazine-in-aqueous-media-by-solar-enhanced-fenton-like-process-involving-persulfate-and-ferrous-ion
#6
Marina Khandarkhaeva, Agniya Batoeva, Denis Aseev, Marina Sizykh, Oyuna Tsydenova
The oxidation of s-triazines (using atrazine (ATZ) as a model compound) by a solar-enhanced Fenton-like process involving persulfate and ferrous ion was studied. A flow-through tubular photoreactor was employed for the experiments. The solar-enhanced oxidative system involving ferrous ion and persulfate (Solar/S2O8(2-)/Fe(2+)) showed the highest ATZ degradation efficiency when compared with other treatments (unactivated S2O8(2-), Solar - sunlight only, S2O8(2-)/Fe(2+), Solar/S2O8(2-)). Complete degradation of ATZ and 20% reduction in total organic carbon (TOC) content were observed after 30min of the treatment...
November 28, 2016: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27905089/novel-paradigm-for-immunotherapy-of-ovarian-cancer-by-engaging-prophylactic-immunity-against-hepatitis-b-virus
#7
Marek Malecki, Emily Putzer, Caroline Quach, Chaitanya Dodivenaka, Xenia Tombokan
BACKGROUND: Only eight women out of one hundred diagnosed with ovarian epithelial cancers, which progressed to the clinical stage IV, survive 10 years. First line therapies: surgery, chemotherapy, and radiation therapy inflict very serious iatrogenic consequences. Passive immunotherapy of ovarian cancers offers only low efficacy. Prophylactic and therapeutic vaccines for ovarian cancers are not available. Interestingly, prophylactic vaccines for Hepatitis B Viruses (HBV) are very effective...
December 2016: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/27902312/genetic-mutations-in-live-infectious-bronchitis-vaccine-viruses-following-single-or-dual-in-vitro-infection-of-tracheal-organ-cultures
#8
Christopher Ball, Sarah Bennett, Anne Forrester, Kannan Ganapathy
Despite regular co-vaccination of two different strains of live infectious bronchitis vaccine viruses, little is known about possible mutations in these viruses following vaccination. As an alternative to chicks, this study used an in-vitro infection model to identify single nucleotide polymorphisms (SNPs) within the part-S1 gene of two live IBV vaccine strains (793B and Massachusetts) following single or dual inoculation onto tracheal organ cultures (TOCs). Results indicate that viral titres reduced over the duration of the study, conversely the amount of detected IBV genome increased...
October 12, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27898787/zeolite-combined-with-alum-and-polyaluminum-chloride-mixed-with-agricultural-slurries-reduces-carbon-losses-in-runoff-from-grassed-soil-boxes
#9
J G Murnane, R B Brennan, O Fenton, M G Healy
Carbon (C) losses from agricultural soils to surface waters can migrate through water treatment plants and result in the formation of disinfection by-products, which are potentially harmful to human health. This study aimed to quantify total organic carbon (TOC) and total inorganic C losses in runoff after application of dairy slurry, pig slurry, or milk house wash water (MWW) to land and to mitigate these losses through coamendment of the slurries with zeolite (2.36-3.35 mm clinoptilolite) and liquid polyaluminum chloride (PAC) (10% AlO) for dairy and pig slurries or liquid aluminum sulfate (alum) (8% AlO) for MWW...
November 2016: Journal of Environmental Quality
https://www.readbyqxmd.com/read/27898331/cleaning-verification-exploring-the-effect-of-the-cleanliness-of-stainless-steel-surface-on-sample-recovery
#10
Imad A Haidar Ahmad, James Tam, Xue Li, William Duffield, Thomas Tarara, Andrei Blasko
The parameters affecting the recovery of pharmaceutical residues from the surface of stainless steel coupons for quantitative cleaning verification method development have been studied, including active pharmaceutical ingredient (API) level, spiking procedure, API/excipient ratio, analyst-to-analyst variability, inter-day variability, and cleaning procedure of the coupons. The lack of a well-defined procedure that consistently cleaned coupon surface was identified as the major contributor to low and variable recoveries...
November 18, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/27892492/distribution-of-carbon-nitrogen-and-phosphorus-in-coastal-wetland-soil-related-land-use-in-the-modern-yellow-river-delta
#11
Junbao Yu, Chao Zhan, Yunzhao Li, Di Zhou, Yuqin Fu, Xiaojing Chu, Qinghui Xing, Guangxuan Han, Guangmei Wang, Bo Guan, Qing Wang
The delivery and distribution of nutrients in coastal wetland ecosystems is much related to the land use. The spatial variations of TOC, TN, NH4(+)-N, NO3(-)-N and TP and associated soil salinity with depth in 9 kinds land uses in coastal zone of the modern Yellow River Delta (YRD) was evaluated based on monitoring data in field from 2009 to 2015. The results showed that the average contents of soil TOC, TN, NO3(-)-N, NH4(+)-N and TP were 4.21 ± 2.40 g kg(-1), 375.91 ± 213.44, 5.36 ± 9.59 and 7...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27891553/core-curriculum-illustration-dural-venous-sinus-thrombosis
#12
Sibi Rajendran, Alex Pereira, Morgan Eckerd, Barbara Pawley
This is the 25th installment of a series that will highlight one case per publication issue from the bank of cases available online as a part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for study online at http://www.aseronline.org/curriculum/toc.htm .
November 28, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27889658/chlorella-vulgaris-cultivation-in-sludge-extracts-from-2-4-6-tcp-wastewater-treatment-for-toxicity-removal-and-utilization
#13
Lu Wang, Xiurong Chen, Hualin Wang, Yuying Zhang, Qingjie Tang, Jiahui Li
Chlorella vulgaris was cultivated in different proportions of activated sludge extracts, which was from the treatment of the synthetic wastewater containing 2,4,6-trichlorophenol (2,4,6-TCP). The nutrients, total nitrogen (TN) and total phosphorus (TP), were removed over 45% and 90%, respectively. The maximum reduction amount of ecotoxicity and total organic carbon (TOC) occurred in the 100% sludge group on the 8th day (68%; 86.2 mg L(-1)). The variations of Excitation-emission matrix spectra (EEMs) and TOC indicated that extracellular organic matters (EOM) produced by algae led to TOC increase in the medium...
November 24, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27886534/differences-in-the-response-of-soil-dehydrogenase-activity-to-cd-contamination-are-determined-by-the-different-substrates-used-for-its-determination
#14
Xiangping Tan, Yanju Liu, Kaihong Yan, Ziquan Wang, Guannan Lu, Yike He, Wenxiang He
Dehydrogenase activity (DHA) is an important indicator of heavy metal toxicity in contaminated soils. Different instances of DHA were determined using various substrates and which could affect the description of heavy metal toxicity. Currently, too few investigations have been done on selecting appropriate substrates. This study employed indoor simulation to determine soil DHA and its response to external cadmium (Cd) using two substrates (TTC and INT). Hormesis for DHA obtained using the TTC method (DHA-TTC) in low Cd concentration was observed which was quickly inhibited in high Cd concentration...
November 22, 2016: Chemosphere
https://www.readbyqxmd.com/read/27884525/carbon-accumulation-rates-recorded-in-the-last-150years-in-tropical-high-mountain-peatlands-of-the-atlantic-rainforest-se-brazil
#15
Lúcio F Lourençato, Pedro P Caldeira, Marcelo C Bernardes, Andressa C Buch, Daniel C Teixeira, Emmanoel V Silva-Filho
Peatlands are environmental matrices that store large amounts of organic carbon (TOC) and work as records of environmental changes. Recent record of organic carbon accumulated were assessed in two Forest National Parks, Itatiaia and Serra dos Órgãos in the Southeastern of Brazil. Based on organic and inorganic characterization, the cores from peatlands presented a predominance of organic material in an advanced stage of decomposition and those soils were classified as typical Haplosaprists Histosols. The combination of favorable topographic and climatic conditions led to rapid C accumulation across coastal mountain in the tropical peatlands studied, presenting an average accumulation rate of C, in the last century, of 194gCm(-2)yr(-1) about 7 higher times than the rate found in boreal and subarctic peatlands, those higher values may be related to changes in the hydrological cycle occurred since 1950s...
November 22, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27873111/bioaugmentation-of-a-continuous-flow-self-forming-dynamic-membrane-bioreactor-for-the-treatment-of-wastewater-containing-high-strength-pyridine
#16
Cheng Hou, Jinyou Shen, Dejin Zhang, Yi Han, Dehua Ma, Xiuyun Sun, Jiansheng Li, Weiqing Han, Lianjun Wang, Xiaodong Liu
For the treatment of high-strength pyridine containing wastewater, a bioaugmented continuous-flow self-forming dynamic membrane bioreactor (CSFDMBR), which was consisted of a continuous flow airlift reactor (CFAR) and a dynamic membrane bioreactor (DMBR), was developed in this study. The results indicated that through the bioaugmentation by Rhizobium sp. NJUST18, CSFDMBR could be successfully started, which was confirmed by complete removal of pyridine, efficient nitrification, and significant increase of biomass...
November 21, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27872614/bioluminescent-vibrio-fischeri-assays-in-the-assessment-of-seasonal-and-spatial-patterns-in-toxicity-of-contaminated-river-sediments
#17
Sergio Jarque, Petr Masner, Jana Klánová, Roman Prokeš, Ludek Bláha
Several bacteria-based assays, notably Vibrio fischeri luminescence assays, are often used as environmental monitoring tool for toxicity in sediments that may serve as both sinks and secondary source of contamination in aquatic ecosystems. In this study, we used 30-s kinetic bioassays based on V. fischeri to evaluate the toxicity associated to sediments from five localities with different contamination inputs (Morava River and its tributary Drevnice River in the south-eastern part of the Czech Republic). Toxicity assessed as half maximal inhibitory concentration (IC50) over the course of a year-long sampling was compared in bottom sediments and freshly trapped particulate material...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27856054/task-specific-thioglycolate-ionic-liquids-for-heavy-metal-extraction-synthesis-extraction-efficacies-and-recycling-properties
#18
Sonja Platzer, Mega Kar, Raphlin Leyma, Sonia Chib, Alexander Roller, Franz Jirsa, Regina Krachler, Douglas R MacFarlane, Wolfgang Kandioller, Bernhard K Keppler
Eight novel task-specific ionic liquids (TSILs) based on the thioglycolate anion designed for heavy metal extraction have been prepared and characterized by (1)H and (13)C NMR, UV-Vis, infrared, ESI-MS, conductivity, viscosity, density and thermal properties. Evaluation of their time-resolved extraction abilities towards cadmium(II) and copper(II) in aqueous solutions have been investigated where distribution ratios up to 1200 were observed. For elucidation of the IL extraction mode, crystals were grown where Cd(II) was converted with an excess of S-butyl thioglycolate...
October 24, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27852522/enhanced-photocatalytic-degradation-of-tetracycline-and-real-pharmaceutical-wastewater-using-mwcnt-tio2-nano-composite
#19
Mehdi Ahmadi, Hojjatallah Ramezani Motlagh, Nematollah Jaafarzadeh, Azar Mostoufi, Reza Saeedi, Gelavizh Barzegar, Sahand Jorfi
Photocatalytic degradation of tetracycline using MWCNT/TiO2nanocomposite was investigated under UVC irradiation. The effective operational parameters included pH, irradiation time, photocatalyst dosage, weight ratio of MWCNT to TiO2 and tetracycline concentration and were studied consecutively. Complete removal of tetracycline concentrations of up to 10 mg/L was obtained at MWCNT to TiO2 ratio of 1.5 (w/w%), pH 5, photocatalyst dosage of 0.2 g/L. Pseudo-first order kinetic model was best fitted with the experimental results (R(2): 0...
November 13, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27851689/chinese-toc
#20
(no author information available yet)
No abstract text is available yet for this article.
December 2016: Journal of Nursing Research: JNR
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