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https://www.readbyqxmd.com/read/29245121/co-doped-tio2-nanostructures-as-a-strong-antibacterial-agent-and-self-cleaning-cover-synthesis-characterization-and-investigation-of-photocatalytic-activity-under-uv-irradiation
#1
Maryam Hosseini-Zori
The aim of this work was synthesis and investigation of various properties of Co-doped titanium dioxide nanostructures. However, dopant has no effect on XRD pattern of the host but it can influence on the various characteristics of host such as optical and electrical properties. The results of optical properties showed that absorption energy of TiO2 decreases in presence of cobalt as dopant. Red-shift in absorption spectrum that may be due to the excitation of 3d electrons of Co ions to the conduction band of TiO2 can be considered as a strong evidence to confirm the presence of Co as dopant in TiO2 lattice...
December 8, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29244810/synaptic-augmentation-in-a-cortical-circuit-model-reproduces-serial-dependence-in-visual-working-memory
#2
Daniel P Bliss, Mark D'Esposito
Recent work has established that visual working memory is subject to serial dependence: current information in memory blends with that from the recent past as a function of their similarity. This tuned temporal smoothing likely promotes the stability of memory in the face of noise and occlusion. Serial dependence accumulates over several seconds in memory and deteriorates with increased separation between trials. While this phenomenon has been extensively characterized in behavior, its neural mechanism is unknown...
2017: PloS One
https://www.readbyqxmd.com/read/29243927/orbitally-matched-edge-doping-in-graphene-nanoribbons
#3
Rebecca A Durr, Danny Haberer, Yea-Lee Lee, Raymond Blackwell, Alin Miksi Kalayjian, Tomas Marangoni, Jisoon Ihm, Steven G Louie, Felix R Fischer
A series of trigonal planar N-, O-, and S-dopant atoms incorporated along the convex protrusion lining the edges of bottom-up synthesized chevron graphene nanoribbons (cGNRs) induce a characteristic shift in the energy of conduction and valence band edge states along with a significant reduction of the band gap of up to 0.3 eV per dopant atom per monomer. A combination of scanning probe spectroscopy and density functional theory (DFT) calculations reveals that the direction and the magnitude of charge transfer between the dopant atoms and the cGNR backbone are dominated by inductive effects and follow the expected trend in electronegativity...
December 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29243667/graphene-induced-band-gap-renormalization-in-polythiophene-a-many-body-perturbation-study
#4
F Marsusi, I A Fedorov, S Gerivani
Density functional theory and many-body perturbation theory at the G0W0 level are employed to study the electronic properties of polythiophene (PT) adsorbed on the graphene surface. Analysis of the charge density difference shows that substrate-adsorbate interaction leads to a strong physisorption and interfacial electric dipole moment formation. The electrostatic potential displays a  -0.19 eV shift in the graphene work function from its initial value of 4.53 eV, as the result of the interaction. The LDA band gap of the polymer does not show any change...
December 15, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29243580/coumarins-as-promising-scaffold-for-the-treatment-of-age-related-diseases-an-overview-of-the-last-five-years
#5
Giovanna Lucia Delogu, Maria Joao Matos
Degenerative diseases are becoming increasingly prevalent with the aging of the human population. The twentieth century witnessed a significant demographic change in the industrialized world that is currently followed by a similar shift of life expectancy to upper age ranges in Asia, Africa, and Middle and South America. A rising tide of chronic age-dependent diseases will soon present serious challenges for these countries. Age-related diseases are commonly seen in older patients. More than 40% of adults 60 and older have a combination of risk factors known as metabolic syndrome, which increases the risk for developing degenerative disorders, and certain cancers...
December 14, 2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/29243555/philanthropy-and-the-nation-state-in-global-health-the-gates-foundation-in-india
#6
Manjari Mahajan
In recent years, philanthropic actors such as the Gates Foundation have been understood as commanding sweeping influence in global health. They have been associated with the outsourcing of public health services, shifting of policy priorities, and the eventual sidelining of national governments. This article makes a different argument about the impact of global philanthropic actors. It focuses on the work of the Gates Foundation in India over the last decade and a half, tracing how the foundation initially circumvented the national government but then moved on to a discourse of partnership...
December 15, 2017: Global Public Health
https://www.readbyqxmd.com/read/29243331/a-5-year-retrospective-audit-of-prescribing-by-a-critical-care-outreach-team
#7
Mark Wilson
UK prescribing legislation changes made in 2006 and 2012 enabled appropriately qualified nurses to prescribe any licensed medication, and all controlled drugs in schedule 2-5 of the Misuse of Drugs Regulations 2001, for any medical condition within their clinical competence. Critical Care Outreach nurses who are independent nurse prescribers are ideally placed to ensure that acutely ill patients receive treatment without delay. The perceived challenge was how Critical Care Outreach nurses would be able to safely prescribe for a diverse patient group...
December 15, 2017: Nursing in Critical Care
https://www.readbyqxmd.com/read/29242980/environmental-and-biological-measurements-of-isoflurane-and-sevoflurane-in-operating-room-personnel
#8
Abbas Jafari, Rogaieh Bargeshadi, Fatemeh Jafari, Iraj Mohebbi, Mohammad Hajaghazadeh
PURPOSE: The present study aimed to compare the concentration of isoflurane and sevoflurane in the individual's breathing zone and ambient air of operating rooms (ORs), to investigate the correlation between breathing zone levels and urinary concentrations, and to evaluate the ORs pollution in the different working hours and weeks. METHODS: Environmental and biological concentrations of isoflurane and sevoflurane were evaluated at 9ORs. Air samples were collected by active sampling method and urine samples were collected from each subject at the end of the work shift...
December 15, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/29242679/mn-doped-aizs-zns-nanocrystals-synthesis-and-optical-properties
#9
Siqi Chen, Masoumeh Saber Zaeimian, Jorge H S K Monteiro, Jialong Zhao, Athanasios G Mamalis, Ana de Bettencourt-Dias, Xiaoshan Zhu
In this work, Mn doped AIZS/ZnS (Mn:AIZS/ZnS) nanocrystals (NCs) have been synthesized in an approach using heat-up and drop-wise addition of precursors. On the basis of the characterization of these doped NCs on their optical properties and materials, it is found that: (1) as more Mn atoms are doped into NCs, the doped NCs present photoluminescence (PL) red-shift and quantum yield quenching; (2) the doped NCs possess a short PL lifetime in tens of microseconds and a long PL lifetime in hundreds of microseconds, and the short lived PL is more dominant than the long lived one; and (3) the doped NCs present a reversible PL thermal quenching in a range from room temperature to 170°C...
November 25, 2017: Journal of Alloys and Compounds
https://www.readbyqxmd.com/read/29242550/diversity-of-vaginal-microbiota-increases-by-the-time-of-labor-onset
#10
Ekaterina Avershina, Silje Slangsvold, Melanie Rae Simpson, Ola Storrø, Roar Johnsen, Torbjørn Øien, Knut Rudi
Vaginal microbiota is an important early source of bacterial colonization for newborns. However, only a few small studies have investigated the composition of vaginal microbiota during labor. In this work, we analyzed vaginal swabs collected at 36 weeks gestation and at the onset of labor from 256 women participating in a randomized placebo-controlled study of probiotic supplementation for the prevention of atopic dermatitis in offspring. Although individuals' vaginal microbiota was stable over time, several bacterial families, which are characteristic of mixed community state type (CST) IV, were overrepresented in vaginal swabs sampled at labor...
December 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29242251/equal-opportunity-equal-work-increasing-women-s-participation-in-the-u-s-president-s-malaria-initiative-africa-indoor-residual-spraying-project
#11
Abigail Donner, Allison Belemvire, Ben Johns, Keith Mangam, Elana Fiekowsky, Jayleen Gunn, Mary Hayden, Kacey Ernst
BACKGROUND: One of the primary control measures for malaria transmission is indoor residual spraying (IRS). Historically, few women have worked in IRS programs, despite the income-generating potential. Increasing women's roles in IRS requires understanding the barriers to women's participation and implementing measures to address them. The U.S. President's Malaria Initiative (PMI) Africa Indoor Residual Spraying (AIRS) Project is the largest implementer of IRS globally. To address gender inequity in IRS operations, PMI AIRS assessed the barriers to the participation of women and developed and implemented policies to address these barriers...
December 14, 2017: Global Health, Science and Practice
https://www.readbyqxmd.com/read/29241398/effects-of-exposure-and-vowel-space-distribution-on-phonetic-drift-evidence-from-american-english-learners-of-french
#12
Benjamin Lang, Lisa Davidson
Recent work by Chang has shown that even at the very earliest stages of second language (L2) acquisition, the phonetic implementation of speakers' native English phoneme categories is slightly modified by contact with L2 Korean, which is referred to as "phonetic drift." This study investigates whether rapid phonetic drift generalizes to another pairing of languages. We examined naïve American English learners of French, who were recorded producing both American English and French vowels after one and six weeks of a study abroad program in Paris...
December 1, 2017: Language and Speech
https://www.readbyqxmd.com/read/29240660/healthcare-provider-views-on-transitioning-from-task-shifting-to-advanced-practice-nursing-in-tanzania
#13
Joanes Faustine Mboineki, Weihong Zhang
BACKGROUND: The Tanzanian health sector suffers from shortages of healthcare workers as well as uneven distribution of healthcare workers in urban and rural areas. Task shifting-delegation of tasks from professionals to other healthcare team members with less training, such as medical attendants-is practiced, compromising quality of care. Advanced practice nursing is underutilized. OBJECTIVE: The purpose of this study was to explore the views of nurses and physicians on current responses to shortages of healthcare workers and the potential for utilization of advanced practice nurses...
January 2018: Nursing Research
https://www.readbyqxmd.com/read/29240451/hpe-as-a-field-implications-for-the-production-of-compelling-knowledge
#14
Anneke van Enk, Glenn Regehr
ISSUE: Research in education, including health professions education, has long struggled with the competing concerns of academic and practice-based stakeholders. Inspired partially by the work of Stokes and other theorists in science and technology studies, we propose that discussions about compelling research in health professions education might be usefully advanced by considering what it would mean if the community framed itself as a knowledge-producing field instead of aligning itself with either disciplinary or practical interests...
December 14, 2017: Teaching and Learning in Medicine
https://www.readbyqxmd.com/read/29240149/full-c-band-si-photonic-crystal-waveguide-modulator
#15
Yosuke Terada, Keisuke Kondo, Ryotaro Abe, Toshihiko Baba
The slow-light effect in silicon lattice-shifted photonic crystal waveguide (LSPCW) Mach-Zehnder modulators allows compact phase shifters, while limiting the working spectrum Δλ. We optimized the structural parameters of the LSPCW and extended Δλ to cover the full C-band in exchange for moderately decreasing the group index ng. We obtained Δλ=42  nm with ng=8-9 in a fabricated device and observed 25 Gbps eye opening in the 200 μm modulator in the full C-band.
December 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29240040/effects-of-the-work-limitations-on-the-career-path-of-a-cohort-of-health-workers
#16
Donatella Talini, Gianpaolo Romeo, Alberto Baldasseroni, Aldo Mignani, Alfonso Cristaudo
BACKGROUND: The median age of the workforce, and of healthcare workers in particular, is increasing, resulting in a reduced work capacity. This may prompt the occupational physician to issue fitness for work limitations. OBJECTIVES: To examine the health surveillance data collected over 20 years on the employees of a large healthcare institution to identify the effects of the limitations imposed on their career paths. METHODS: The database of health surveillance records gathered over the years was analysed using the same dedicated software...
December 14, 2017: La Medicina del Lavoro
https://www.readbyqxmd.com/read/29239861/capacitance-voltage-analysis-of-electrical-properties-for-wse2-field-effect-transistors-with-high-k-encapsulation-layer
#17
Seung-Pil Ko, Jong Mok Shin, Ho-Kyun Jang, Min Youl You, Jun-Eon Jin, Miri Choi, Jiung Cho, Gyu-Tae Kim
Doping effects in devices based on two-dimensional materials have been widely studied. However, detailed analysis and mechanism of the doping effect caused by encapsulation layers has not been sufficiently explored. In this work, we present experimental studies on the n-doping effect in WSe2 field effect transistors (FETs) with high-k encapsulation layer (Al2O3) grown by atomic layer deposition (ALD). In addition, we demonstrate the mechanism and origin of the doping effect. After encapsulation of the Al2O3 layer, the threshold voltage of the WSe2 FET negatively shifted with the increase of the on-current...
December 14, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29239697/who-is-sleepier-on-the-night-shift-the-influence-of-bio-psycho-social-factors-on-subjective-sleepiness-of-female-nurses-during-the-night-shift
#18
Nataly Zion, Anat Drach-Zahavy, Tamar Shochat
Sleepiness is a common complaint during the night shift and may impair performance. The current study aimed to identify bio-psycho-social factors associated with subjective sleepiness during the night shift. Ninety-two female nurses working rotating shifts completed a sociodemographic questionnaire, the Munich ChronoType Questionaire for shift workers, the Pittsburg Sleep Quality Index and the Pre-sleep Arousal Scale. Subjective sleepiness was measured hourly during two night shifts using the Karolinska Sleepiness Scale, and activity monitors assessed sleep duration 24-hours before each shift...
December 14, 2017: Ergonomics
https://www.readbyqxmd.com/read/29239658/working-memory-training-in-older-adults-bayesian-evidence-supporting-the-absence-of-transfer
#19
Sabrina Guye, Claudia C von Bastian
The question of whether working memory training leads to generalized improvements in untrained cognitive abilities is a longstanding and heatedly debated one. Previous research provides mostly ambiguous evidence regarding the presence or absence of transfer effects in older adults. Thus, to draw decisive conclusions regarding the effectiveness of working memory training interventions, methodologically sound studies with larger sample sizes are needed. In this study, we investigated whether or not a computer-based working memory training intervention induced near and far transfer in a large sample of 142 healthy older adults (65 to 80 years)...
December 2017: Psychology and Aging
https://www.readbyqxmd.com/read/29239644/the-effects-of-team-reflexivity-on-psychological-well-being-in-manufacturing-teams
#20
Jingqiu Chen, Peter A Bamberger, Yifan Song, Dana R Vashdi
While the impact of team reflexivity (a.k.a. after-event-reviews, team debriefs) on team performance has been widely examined, we know little about its implications on other team outcomes such as member well-being. Drawing from prior team reflexivity research, we propose that reflexivity-related team processes reduce demands, and enhance control and support. Given the centrality of these factors to work-based strain, we posit that team reflexivity, by affecting these factors, may have beneficial implications on 3 core dimensions of employee burnout, namely exhaustion, cynicism, and inefficacy (reduced personal accomplishment)...
December 14, 2017: Journal of Applied Psychology
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