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https://www.readbyqxmd.com/read/28088122/a-comparative-study-on-the-effects-of-ultrathin-luminescent-graphene-oxide-quantum-dot-goqd-and-graphene-oxide-go-nanosheets-on-the-interfacial-interactions-and-mechanical-properties-of-an-epoxy-composite
#1
B Karimi, B Ramezanzadeh
The reinforcement effect of graphene oxide nanosheets on the mechanical properties of an epoxy coating has been extensively studied. However, the effect of graphene oxide quantum dot (GOQD) as a new unique carbon based nanomaterial (with lateral dimension of 5-6nm and thickness of one carbon atom) on the mechanical properties of epoxy coating has not been reported and compared with GO yet. So this study aims at fabrication of a high-performance polymer composite with unique mechanical properties using GOQD nanosheets...
January 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088119/composite-films-of-metal-doped-cos-carbon-allotropes-efficient-electrocatalyst-counter-electrodes-for-high-performance-quantum-dot-sensitized-solar-cells
#2
Seyede Sara Khalili, Hossein Dehghani, Malihe Afrooz
This study reports the enhanced catalytic ability of metal ions-doped CoS and CoS/carbon allotrope counter electrodes (CEs) (synthesized using a successive ionic layer adsorption and reaction (SILAR) method) to improve the power conversion efficiency (η) in quantum dot-sensitized solar cells (QDSSCs). Firstly, doping effects of different metal ions (Mg(2+), Ca(2+), Sr(2+) and Ba(2+)) in the CoS CE on the QDSSCs performance have been investigated. Overall, among the different metal doped CoS CEs, the best energy conversion efficiency of 2...
January 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088115/in-situ-synthesis-of-novel-z-scheme-sns2-biobr-photocatalysts-with-superior-photocatalytic-efficiency-under-visible-light
#3
Fazheng Qiu, Wenjun Li, Fangzhi Wang, Hongda Li, Xintong Liu, Jiayi Sun
In this study, a novel SnS2/BiOBr heterojunction photocatalyst was synthesized via a facile in-situ growth strategy. The heterojunction interface was formed by loading BiOBr nanosheets on the surface of ultrathin hexagonal SnS2 nanoplates. UV/Vis diffuse reflectance spectroscopy (DRS) indicated that SnS2/BiOBr composites possessed stronger visible-light absorption. The as-fabricated SnS2/BiOBr heterojunction nanoplates exhibited considerable improvement in terms of photocatalytic activity for the degradation of rhodamine B (RhB) under visible light irradiation as compared with BiOBr and SnS2...
December 30, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088109/carbetocin-versus-oxytocin-for-prevention-of-post-partum-haemorrhage-at-caesarean-section-in-the-united-kingdom-an-economic-impact-analysis
#4
Helen A van der Nelson, Tim Draycott, Dimitrios Siassakos, Christopher W H Yau, Anthony J Hatswell
OBJECTIVE: To determine the economic impact of the introduction of carbetocin for the prevention of postpartum haemorrhage (PPH) at caesarean section, compared to oxytocin. STUDY DESIGN: The model is a decision tree conducted from a UK National Health Service perspective. 1500 caesarean sections (both elective and emergency) were modelled over a 12 month period. Efficacy data was taken from a published Cochrane meta-analysis, and costs from NHS Reference costs, the British National Formulary and the NHS electronic Medicines Information Tool...
January 3, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28088097/ionic-liquid-pretreatment-of-cassava-residues-for-the-cogeneration-of-fermentative-hydrogen-and-methane
#5
Jun Cheng, Jiabei Zhang, Richen Lin, Jianzhong Liu, Li Zhang, Kefa Cen
An ionic liquid of N-methylmorpholine-N-oxide (NMMO) was used to effectively pretreat cassava residues for the efficient enzymatical hydrolysis and cogeneration of fermentative hydrogen and methane. The reducing sugar yield of enzymolysed cassava residues with NMMO pretreatment improved from 36 to 42g/100g cassava residues. Scanning electron microscopy images revealed the formation of deep grooves (∼4μm wide) and numerous pores in the cassava residues pretreated with NMMO. X-ray diffraction patterns showed that the crystallinity coefficient of NMMO-pretreated cassava residues decreased from 40 to 34...
January 3, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28088084/correlates-of-anti-hepatitis-c-positivity-and-use-of-harm-reduction-services-among-people-who-inject-drugs-in-two-cities-in-croatia
#6
Senad Handanagic, Sandra Sevic, Jelena Barbaric, Zoran Dominkovic, Oktavija Dakovic Rode, Josip Begovac, Ivana Bozicevic
BACKGROUND: We assessed correlates of anti-hepatitis C (anti-HCV) positivity and utilization of needle and syringe exchange programs (NSEP) and opioid agonist treatment (OAT) among people who inject drugs (PWID) in two Croatian cities. METHODS: We conducted a cross-sectional study using respondent-driven (RDS) sampling among PWID in Rijeka (N=255) and Split (N=399). We used RDS-weighted population estimates and multivariable logistic regression to explore correlates of anti-HCV positivity and NSEP and OAT utilization...
December 7, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28088080/a-computer-based-simulator-for-intravascular-photoacoustic-images
#7
Sun Zheng, Yuan Yuan, Han Duoduo
Intravascular photoacoustic (IVPA) is a newly developed catheter-based imaging technique for the diagnosis of arterial atherosclerosis. A framework of simulating IVPA transversal images from a cross-sectional vessel model with given optical and acoustic parameters was presented. The light illumination and transportation in multi-layered wall and atherosclerotic plaque tissues were modeled through Monte Carlo (MC) simulation. The generation and transmission of photoacoustic (PA) waves in the acoustically homogeneous medium were modeled through the PA wave equation, which is solved explicitly with a finite difference time domain (FDTD) algorithm in polar coordinates...
January 6, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28088064/improved-cognition-while-cycling-in-parkinson-s-disease-patients-and-healthy-adults
#8
Audrey A Hazamy, Lori J P Altmann, Elizabeth Stegemöller, Dawn Bowers, Hyo Keun Lee, Jonathan Wilson, Michael S Okun, Chris J Hass
Persons with Parkinson's disease (PD) are typically more susceptible than healthy adults to impaired performance when two tasks (dual task interference) are performed simultaneously. This limitation has by many experts been attributed to limitations in cognitive resources. Nearly all studies of dual task performance in PD employ walking or balance-based motor tasks, which are commonly impaired in PD. These tasks can be performed using a combination of one or two executive function tasks. The current study examined whether persons with PD would demonstrate greater dual task effects (DTEs) on cognition compared to healthy older adults (HOAs) during a concurrent cycling task...
January 11, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28088059/infrared-analysis-of-clay-bricks-incorporated-with-spent-shea-waste-from-the-shea-butter-industry
#9
A N Adazabra, G Viruthagiri, N Shanmugam
The peculiar challenge of effective disposing abundant spent shea waste and the excellent compositional variation tolerance of clay material offered an impetus to examine the incorporation of spent shea waste into clay material as an eco-friendly disposal route in making clay bricks. For this purpose, the chemical constituent, mineralogical compositions and thermal behavior of both clay material and spent shea waste were initially characterized from which modelled brick specimens incorporating 5-20 wt% of the waste into the clay material were prepared...
January 11, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28088058/has-the-symptom-severity-inclusion-requirement-narrowed-the-definition-of-major-depressive-disorder-in-antidepressant-efficacy-trials
#10
Mark Zimmerman, Emily Walsh, Iwona Chelminski, Kristy Dalrymple
BACKGROUND: The inclusion criteria of all placebo-controlled studies of antidepressants have required a minimum level of severity on standardized measures of symptoms of depression. In the present report from the Rhode Island Methods to Improve Diagnostic Assessment and Services (MIDAS) project we examined the association between scores on the Hamilton Depression Rating Scale (HAMD) and the number of criteria met for MDD, as well as the impact of different HAMD cutoff scores on the distribution of the number of DSM-IV criteria met...
January 4, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28088047/sliding-doors-did-drama-based-inter-professional-education-improve-the-tensions-round-person-centred-nursing-and-social-care-delivery-for-people-with-dementia-a-mixed-method-exploratory-study
#11
Lindsay Dingwall, Jane Fenton, Timothy B Kelly, John Lee
This educational intervention takes place when the population of older people with dementia is increasing. Health and Social care professionals must work jointly in increasingly complex contexts. Negative attitudes towards older people are cited as a contributor to poor care delivery, including the use of dismissive and/or patronising language, failing to meet fundamental needs and afford choice. 'Sliding Doors to Personal Futures' is a joint, drama-based, educational initiative between NHS Education Scotland and the Scottish Social Services Council, delivered using interprofessional education (IPE) towards encouraging person-centred health and social care...
December 21, 2016: Nurse Education Today
https://www.readbyqxmd.com/read/28088045/uhplc-ms-ms-method-for-the-quantitation-of-penicillin-g-and-metabolites-in-citrus-fruit-using-internal-standards
#12
Daniele Canzani, Kevin Hsieh, Matthew Standland, Walter Hammack, Fadi Aldeek
Penicillin G has been applied to citrus trees as a potential treatment in the fight against Huanglongbing (HLB). Here, we have developed and validated a method to identify and quantitate penicillin G and two of its metabolites, penillic acid and penilloic acid, in citrus fruit using ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). This method improves upon a previous method by incorporating isotopically labeled internal standards, namely, penillic acid-D5, and penilloic acid-D5...
January 10, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28088034/an-evaluation-of-nova-scotia-s-alcohol-ignition-interlock-program
#13
Ward G M Vanlaar, Marisela Mainegra Hing, Robyn D Robertson
Alcohol ignition interlock programs for offenders aim to reduce recidivism among convicted drink drivers. This study presents an evaluation of Nova Scotia's interlock program implemented in 2008 in order to assess its effectiveness to reduce impaired driving and to help identify areas for improvement. Data used include conviction and crash records of individual participants; provincial monthly counts of alcohol-related charges, convictions and fatal and serious crashes; and interlock logged events. Methods used include descriptive statistics, survival analysis, time series and logistic regression analysis...
January 11, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28088033/a-bayesian-spatial-random-parameters-tobit-model-for-analyzing-crash-rates-on-roadway-segments
#14
Qiang Zeng, Huiying Wen, Helai Huang, Mohamed Abdel-Aty
This study develops a Bayesian spatial random parameters Tobit model to analyze crash rates on road segments, in which both spatial correlation between adjacent sites and unobserved heterogeneity across observations are accounted for. The crash-rate data for a three-year period on road segments within a road network in Florida, are collected to compare the performance of the proposed model with that of a (fixed parameters) Tobit model and a spatial (fixed parameters) Tobit model in the Bayesian context. Significant spatial effect is found in both spatial models and the results of Deviance Information Criteria (DIC) show that the inclusion of spatial correlation in the Tobit regression considerably improves model fit, which indicates the reasonableness of considering cross-segment spatial correlation...
January 11, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28088030/efficacy-and-safety-of-linagliptin-metformin-single-pill-combination-as-initial-therapy-in-drug-na%C3%A3-ve-asian-patients-with-type-2-diabetes
#15
Yiming Mu, Changyu Pan, Bei Fan, Uwe Hehnke, Xiuzhen Zhang, Xuejun Zhang, Xiaoyue Wang, Jingdong Liu, Ying Zhang, Jianling Du, Jianhua Ma, Yan Gong
AIM: To assess efficacy/safety of initial linagliptin/metformin single-pill combination (SPC) therapies versus individual drug components over 24weeks in treatment-naïve Asian patients with type 2 diabetes mellitus and insufficient glycemic control. METHODS: Patients (initial glycated hemoglobin [HbA1c] ⩾7.5% to <11.0% [58-97mmol/mol]; main group) were randomized to: linagliptin 5mg once daily (qd); metformin 500mg twice daily (bid); metformin 1000mg bid; linagliptin 2...
December 5, 2016: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28088022/valorization-of-aluminum-scrap-via-an-acid-washing-treatment-for-reductive-removal-of-toxic-bromate-from-water
#16
Kun-Yi Andrew Lin, Jia-Yin Lin, Hsing-Lung Lien
Aluminum scrap (AS) is adopted for the first time as a readily available aluminum source to prepare zero-valent aluminum (ZVAl) for removing bromate from water via a reductive reaction. Since aluminum is easily oxidized to aluminum oxide (Al2O3) on exposure to air, an acid-washing pretreatment on AS is developed to remove the layer of Al2O3. HCl is found as the most effective acid to pretreat AS and the HCl-pretreated or acid-washed AS (AWAS) is able to remove bromate from water and convert it to bromide. Factors, such as temperature, pH, co-existing anions, and particle size, which influence the bromate removal using AWAS are also investigated...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28088010/challenges-and-opportunities-for-improving-food-quality-and-nutrition-through-plant-biotechnology
#17
REVIEW
David Francis, John J Finer, Erich Grotewold
Plant biotechnology has been around since the advent of humankind, resulting in tremendous improvements in plant cultivation through crop domestication, breeding and selection. The emergence of transgenic approaches involving the introduction of defined DNA sequences into plants by humans has rapidly changed the surface of our planet by further expanding the gene pool used by plant breeders for plant improvement. Transgenic approaches in food plants have raised concerns on the merits, social implications, ecological risks and true benefits of plant biotechnology...
January 11, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28088009/cardiac-output-and-systemic-vascular-resistance-clinical-assessment-compared-with-a-noninvasive-objective-measurement-in-children-with-shock
#18
Asma Razavi, Christopher J L Newth, Robinder G Khemani, Fernando Beltramo, Patrick A Ross
PURPOSE: To evaluate physician assessment of cardiac output and systemic vascular resistance in patients with shock compared with an ultrasonic cardiac output monitor (USCOM). To explore potential changes in therapy decisions if USCOM data were available using physician intervention answers. STUDY DESIGN: Double-blinded, prospective, observational study in a tertiary hospital pediatric intensive care unit. Forty children (<18years) admitted with shock, requiring ongoing volume resuscitation or inotropic support...
December 28, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/28088008/instruments-evaluating-the-quality-of-the-clinical-learning-environment-in-nursing-education-a-systematic-review-of-psychometric-properties
#19
REVIEW
Irene Mansutti, Luisa Saiani, Luca Grassetti, Alvisa Palese
BACKGROUND: The clinical learning environment is fundamental to nursing education paths, capable of affecting learning processes and outcomes. Several instruments have been developed in nursing education, aimed at evaluating the quality of the clinical learning environments; however, no systematic review of the psychometric properties and methodological quality of these studies has been performed to date. OBJECTIVES: The aims of the study were: 1) to identify validated instruments evaluating the clinical learning environments in nursing education; 2) to evaluate critically the methodological quality of the psychometric property estimation used; and 3) to compare psychometric properties across the instruments available...
January 4, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28088007/impairment-of-host-liver-repopulation-by-transplanted-hepatocytes-in-aged-rats-and-the-release-by-short-term-growth-hormone-treatment
#20
Peggy Stock, Maximilian Bielohuby, Martin S Staege, Mei-Ju Hsu, Martin Bidlingmaier, Bruno Christ
Hepatocyte transplantation is an alternative to whole liver transplantation. Yet, efficient liver repopulation by transplanted hepatocytes is low in livers of old animals. This restraint might be because of the poor proliferative capacity of aged donor hepatocytes or the regenerative impairment of the recipient livers. The age-dependent liver repopulation by transplanted wild-type hepatocytes was investigated in juvenile and senescent rats deficient in dipeptidyl-peptidase IV. Repopulation was quantified by flow cytometry and histochemical estimation of dipeptidyl-peptidase IV enzyme activity of donor cells in the negative host liver...
January 11, 2017: American Journal of Pathology
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