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https://www.readbyqxmd.com/read/29667064/correction-to-formation-of-brominated-and-chlorinated-dioxins-and-its-prevention-during-a-pilot-test-of-mechanochemical-treatment-of-pcb-and-pbde-contaminated-soil
#1
Mengnan Lu, Tianwu Lv, Ying Li, Zheng Peng, Giovanni Cagnetta, Shouxiang Sheng, Jun Huang, Gang Yu, Roland Weber
The destruction of persistent organic pollutants(POPs) is a large challenge in particular in developing and emerging economies.
April 18, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29666869/a-unique-tetranuclear-ag-i-complex-emitting-efficient-thermally-activated-delayed-fluorescence-with-a-remarkably-short-decay-time
#2
Xue-Min Gan, Rongmin Yu, Xu-Lin Chen, MingXue Yang, Ling Lin, Xiao-Yuan Wu, Can-Zhong Lu
A novel tetranuclear Ag(i) complex, [Ag4(μ-DMPTP)2(POP)3][BF4]2 (Ag4N2P3), has been designed to achieve highly efficient thermally activated delayed fluorescence (TADF). Photophysical investigations show that the compound exhibits highly efficient TADF (Φ = 76%) and has a very short ambient-temperature TADF decay time of only 0.65 μs, corresponding to a radiative decay rate of k = Φ/τ = 1.2 × 106 s-1, a value belonging to the fast radiative rates in TADF materials.
April 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29664952/the-effect-of-mood-state-on-visual-search-times-for-detecting-a-target-in-noise-an-application-of-smartphone-technology
#3
Toru Maekawa, Stephen J Anderson, Matthew de Brecht, Noriko Yamagishi
The study of visual perception has largely been completed without regard to the influence that an individual's emotional status may have on their performance in visual tasks. However, there is a growing body of evidence to suggest that mood may affect not only creative abilities and interpersonal skills but also the capacity to perform low-level cognitive tasks. Here, we sought to determine whether rudimentary visual search processes are similarly affected by emotion. Specifically, we examined whether an individual's perceived happiness level affects their ability to detect a target in noise...
2018: PloS One
https://www.readbyqxmd.com/read/29664854/efficiency-and-safety-the-best-time-to-valve-a-plaster-cast
#4
Samuel R H Steiner, Kirollos Gendi, Matthew A Halanski, Kenneth J Noonan
BACKGROUND: The act of applying, univalving, and spreading a plaster cast to accommodate swelling is commonly performed; however, cast saws can cause thermal and/or abrasive injury to the patient. This study aims to identify the optimal time to valve a plaster cast so as to reduce the risk of cast-saw injury and increase spreading efficiency. METHODS: Plaster casts were applied to life-sized pediatric models and were univalved at set-times of 5, 8, 12, or 25 minutes...
April 18, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29664135/clinical-outcomes-of-detrusor-underactivity-in-female-with-advanced-pelvic-organ-prolapse-following-vaginal-pelvic-reconstructive-surgery
#5
Tsia-Shu Lo, Sandy Chua, Ma Clarissa Uy-Patrimonio, Chuan C Kao, Chih H Lin
AIM: To determine the impact of vaginal pelvic reconstructive surgery (PRS) on detrusor underactivity (DU) patients having advanced pelvic organ prolapse (POP). METHODS: A retrospective study of patients who underwent PRS for advanced POP (POP-Q ≥ 3) with DU. Data regarding preoperative evaluation, surgical procedure, and post-operative management were collated. Patients were considered to have DU when detrusor pressure at maximum flow (Pdet Qmax ) was ≤10 cmH2 0 and peak flow rate (Qmax ) of ≤12 mL/s...
April 17, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29663608/the-effects-of-hexachloronaphthalene-on-selected-parameters-of-heme-biosynthesis-and-systemic-toxicity-in-female-wistar-rats-after-90-day-oral-exposure
#6
Michal Klimczak, Adam Darago, Elzbieta Bruchajzer, Katarzyna Domeradzka-Gajda, Maciej Stepnik, Katarzyna Kuzajska, Anna Kilanowicz
Hexachloronaphthalenes (HxCNs) are the most toxic congeners of polychlorinated naphthalenes, a group of compounds lately included into the list of persistent organic pollutants (POPs). This study presents the effects of 90-day intragastric administration of HxCN to female Wistar rats at doses of 0.03, 0.1, and 0.3 mg/kg body weight. The study examined selected parameters of the heme synthesis pathway, oxidative stress, hepatic cytochromes level, and basic hematology indicators. A micronucleus test was also performed...
April 16, 2018: Environmental Toxicology
https://www.readbyqxmd.com/read/29660398/molecular-phenotypes-of-the-human-kidney-myoid-stromal-cells-telocytes-and-myoepithelial-cells
#7
M C Rusu, L Mogoantă, F Pop, M A Dobra
The connective stromal and epithelial compartments of the kidney have regenerative potential and phenotypic flexibility. A few studies have shown that cells appertaining to both compartments can exhibit myoid phenotypes. The purpose of our study was to investigate the myoid pattern of kidney and its association with the kidney niches containing stromal cells/telocytes (SC/TCs). We performed an immunohistochemical study using a panel of endothelial, myoid, mesenchymal and stem/progenitor markers, namely CD31, CD34, CD105 (endoglin), CD117/c-kit, nestin, desmin, α-smooth muscle actin (α-SMA) and the heavy chain of smooth muscle myosin (SMM)...
April 13, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29659435/frontalis-muscle-flap-versus-maximal-anterior-levator-resection-as-first-option-for-patients-with-severe-congenital-ptosis
#8
Ramón Medel, Salvador Molina, Luz Maria Vasquez, Josep Visa, Ana Wert, Charlotte Wolley-Dod
PURPOSE: To compare 2 surgical techniques (frontalis flap versus maximal anterior levator resection) as first surgical options for the treatment of congenital ptosis with poor levator function in patients younger than 2 years of age with a follow up of 10 years. METHODS: A retrospective study of 58 patients (71 eyelids) with severe ptosis and poor levator function who underwent frontalis muscle flap (FMF = 47) or maximal anterior levator resection (ALR = 24) for correction of their ptosis...
April 12, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29659320/opioid-discussion-in-the-twittersphere
#9
Rachel L Graves, Christopher Tufts, Zachary F Meisel, Dan Polsky, Lyle Ungar, Raina M Merchant
BACKGROUND: The rise in opioid use and overdose has increased the importance of improving data collection methods for the purpose of targeting resources to high-need populations and responding rapidly to emerging trends. OBJECTIVE: To determine whether Twitter data could be used to identify geographic differences in opioid-related discussion and whether opioid topics were significantly correlated with opioid overdose death rate. METHODS: We filtered approximately 10 billion tweets for keywords related to opioids between July 2009 and October 2015...
April 16, 2018: Substance Use & Misuse
https://www.readbyqxmd.com/read/29656330/risk-factors-for-anatomic-pelvic-organ-prolapse-at-6-weeks-postpartum-a-prospective-observational-study
#10
Cathrine Reimers, Franziska Siafarikas, Jette Stær-Jensen, Milada Cvancarova Småstuen, Kari Bø, Marie Ellström Engh
INTRODUCTION AND HYPOTHESIS: The objective was to identify risk factors for postpartum anatomic pelvic organ prolapse (aPOP) by comparing women with and without aPOP at 6 weeks postpartum with regard to pelvic floor measurements antepartum and obstetrical characteristics. METHODS: We carried out a prospective observational cohort study including nulliparous pregnant women in a Norwegian university hospital. Participants underwent clinical examinations, including pelvic organ prolapse quantification system (POP-Q) and transperineal ultrasound at gestational week 21 and at 6 weeks postpartum...
April 14, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29656324/the-organic-pollutant-status-of-rivers-in-bosnia-and-herzegovina-as-determined-by-a-combination-of-active-and-passive-sampling-methods
#11
Christopher Harman, Merete Grung, Jasmina Djedjibegovic, Aleksandra Marjanovic, Eirik Fjeld, Hans Fredrik Veiteberg Braaten, Miroslav Sober, Thorjørn Larssen, Sissel Brit Ranneklev
There is an overall lack of data concerning the pollution status of Bosnia Herzegovina, which is confounded by fragmented national environmental management. The present study aimed to provide some initial data for concentrations of priority substances in two major Bosnian Rivers, using two types of passive sampler (PS) as well as by using high volume water sampling (HVWS). Overall, concentrations of most persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs) and legacy pesticides, were shown to be low...
April 15, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29656250/exposure-to-environmental-level-phenanthrene-induces-a-nash-like-phenotype-in-new-born-rat
#12
Jiaojiao Guo, Chonggang Wang, Zhizhun Guo, Zhenghong Zuo
More and more evidence indicates that persistent organic pollutants (POPs) are a risk factor for non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH). Phenanthrene (Phe) is a kind of POP which existed extensively in the environment, but whose toxicity on mammals has so far received less focus. Subcutaneously injection of Phe (0.5, 5, 50 μg/kg) for 21 days induced significant NAFLD/NASH symptoms in new born rats. Exposure to environmental levels of Phe decreased body weight and liver-somatic index; impaired histology of liver; influenced the peroxisome proliferator-activated receptor gamma (PPARγ) signaling and lipid metabolism in liver; stimulated oxidative stress in the rats' liver; induced the variation of NFκB pathway and liver inflammatory response; and caused liver fibrosis via transforming growth factor β1 (tgfβ1)...
April 12, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29653413/influence-of-propafenone-on-the-anticonvulsant-activity-of-various-novel-antiepileptic-drugs-in-the-mouse-maximal-electroshock-model
#13
Kinga K Borowicz-Reutt, Monika Popławska, Monika Banach, Dorota Wróblewska
BACKGROUND: The main mechanism of action of propafenone (antiarrhythmic drug) involves the inhibition of the fast inward sodium current during phase 0 of the action potential. Sodium channel-blocking activity is also characteristic for some antiepileptic drugs. Therefore, it could be assumed that propafenone may also affect seizures. In the present study, we evaluated the effect of propafenone on the protective effect of oxcarbazepine, lamotrigine, topiramate and pregabalin against the maximal electroshock-induced seizures in mice...
November 23, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29651517/national-survey-of-urogynecological-practice-patterns-among-united-states-ob-gyn-oral-board-examinees-in-different-practice-settings
#14
Andrey Petrikovets, Abigail Davenport, Sherif A El-Nashar, David Sheyn, Jeffrey Mangel, Sangeeta T Mahajan
INTRODUCTION AND HYPOTHESIS: The current urogynecological surgical experience of recent OB/GYN graduates in different practice settings is unclear. The aim of this study was to evaluate differences in urogynecological surgical care between private practitioners (PPs) and other generalist OB/GYN oral board examinees. METHODS: A total of 699 OB/GYN oral board examination examinees were administered a survey during board preparatory courses with a 70.7% response rate...
April 13, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29651450/automated-contour-tracking-and-trajectory-classification-of-pelvic-organs-on-dynamic-mri
#15
Iman Nekooeimehr, Susana Lai-Yuen, Paul Bao, Alfredo Weitzenfeld, Stuart Hart
A method is presented to automatically track and segment pelvic organs on dynamic magnetic resonance imaging (MRI) followed by multiple-object trajectory classification to improve understanding of pelvic organ prolapse (POP). POP is a major health problem in women where pelvic floor organs fall from their normal position and bulge into the vagina. Dynamic MRI is presently used to analyze the organs' movements, providing complementary support for clinical examination. However, there is currently no automated or quantitative approach to measure the movement of the pelvic organs and their correlation with the severity of prolapse...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29649692/emissions-of-toxic-pollutants-from-co-combustion-of-demolition-and-construction-wood-and-household-waste-fuel-blends
#16
Mar Edo, Núria Ortuño, Per-Erik Persson, Juan A Conesa, Stina Jansson
Four different types of fuel blends containing demolition and construction wood and household waste were combusted in a small-scale experimental set-up to study the effect of fuel composition on the emissions of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), biphenyls (PCBs), chlorobenzenes (PCBzs), chlorophenols (PCPhs) and polycyclic aromatic hydrocarbons (PAHs). Two woody materials, commercial stemwood (ST) and demolition and construction wood (DC) were selected because of the differences in their persistent organic pollutants (POPs), ash and metals content...
April 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29644605/a-new-marine-sediment-certified-reference-material-crm-for-the-determination-of-persistent-organic-contaminants-iaea-459
#17
Imma Tolosa, Roberto Cassi, David Huertas
A new marine sediment certified reference material (IAEA 459) with very low concentrations (μg kg-1 ) for a variety of persistent organic contaminants (POPs) listed by the Stockholm Convention, as well as other POPs and priority substances (PSs) listed in many environmental monitoring programs was developed by the IAEA. The sediment material was collected from the Ham River estuary in South Korea, and the assigned final values were derived from robust statistics on the results provided by selected laboratories which demonstrated technical and quality competence, following the guidance given in ISO Guide 35...
April 11, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29644382/prolapse-reduction-deteriorates-the-urethral-closure-mechanism
#18
Yasmine Khayyami, Gunnar Lose, Niels Klarskov
INTRODUCTION AND HYPOTHESIS: Pelvic organ prolapse (POP) reduction is often performed in the preoperative assessment of women before POP surgery. Using urethral pressure reflectometry (UPR), we sought to investigate how POP reduction affects the urethral closure mechanism. METHODS: Women with anterior or posterior vaginal wall prolapse stage ≥II with and without POP reduction were examined with a speculum. We performed prolapse staging according to the Pelvic Organ Prolapse Quantification system, UPR measurements at rest and during squeezing, and standardized stress tests with 300 ml saline...
April 11, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29643551/role-of-dexmedetomidine-as-an-anaesthetic-adjuvant-in-breast-cancer-surgery-as-a-day-care-procedure-a-randomised-controlled-study
#19
Rekha Das, Rajat Kumar Das, Sushrita Sahoo, Suchismita Nanda
Background and Aims: Breast cancer surgery can be carried out as day-care procedure to increase patient turnover, decrease disease progression and financial burden. The present study was carried out to assess the role of dexmedetomidine in breast cancer surgery as a day-care procedure. Methods: This prospective randomised, double-blind study was carried out on 100 patients screened for day-care breast cancer surgery. They were divided into two groups of 50 each; who received either normal saline (Group NS) or 0...
March 2018: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/29627546/differential-contribution-of-animal-and-vegetable-food-items-on-persistent-organic-pollutant-serum-concentrations-in-spanish-adults-data-from-bioambient-es-project
#20
Juan Pedro Arrebola, Argelia Castaño, Marta Esteban, Mónica Bartolomé, Beatriz Pérez-Gómez, Juan José Ramos
Diet is considered the main source of Persistent Organic Pollutant (POP) exposure in the general population, although there are still several gaps of knowledge regarding the differential contribution of main food groups. The aim of this study was to identify dietary patterns that contribute to human exposure to organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and Perfluoroalkyl Substances (PFASs). Study population (n=1880, 18-65years old) was recruited during 2009-2010 in all the main geographical areas of Spain...
April 5, 2018: Science of the Total Environment
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