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https://www.readbyqxmd.com/read/29786932/bandgap-tunable-preparation-of-smooth-and-large-two-dimensional-antimonene
#1
Xin Wang, Junjie He, Benqing Zhou, Youming Zhang, Jiatao Wu, Rui Hu, Liwei Liu, Jun Song, Junle Qu
As a highly stable bandgap semiconductor, antimonene is an intriguing two-dimensional (2D) material in optoelectronics. However, its short layer distance and strong binding energy make it challenging to prepare high-quality large 2D antimonene; therefore, its predicted tunable bandgap has not been experimentally confirmed. In this work, we used a novel and simple approach to prepare smooth and large 2D antimonene with uniform layers through a pregrinding and subsequent sonication-assisted liquid-phase exfoliation process...
May 22, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29786830/blue-light-filtering-intraocular-lenses-iols-for-protecting-macular-health
#2
REVIEW
Laura E Downie, Ljoudmila Busija, Peter R Keller
BACKGROUND: An intraocular lens (IOL) is a synthetic lens that is surgically implanted within the eye following removal of the crystalline lens, during cataract surgery. While all modern IOLs attenuate the transmission of ultra-violet (UV) light, some IOLs, called blue-blocking or blue-light filtering IOLs, also reduce short-wavelength visible light transmission. The rationale for blue-light filtering IOLs derives primarily from cell culture and animal studies, which suggest that short-wavelength visible light can induce retinal photoxicity...
May 22, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29786724/influence-of-a-nanoparticle-on-the-structure-and-dynamics-of-model-ionomer-melts
#3
Janani Sampath, Lisa M Hall
We simulate a single spherical nanoparticle (NP) surrounded by partially neutralized ionomers. The coarse-grained ionomers consist of a linear backbone of neutral monomer beads with charged pendant beads and counterions, along with pendant 'sticker' beads that represent unneutralized acid groups. Two different NP interactions are considered; one in which the NP interacts uniformly with all beads in the system (neutral NP) and another in which the NP has higher cohesive interactions with ions and stickers (sticky NP)...
May 22, 2018: Soft Matter
https://www.readbyqxmd.com/read/29786633/the-effect-of-nitrate-supplementation-on-exercise-tolerance-and-performance-a-systematic-review-and-meta-analysis
#4
Gavin P Van De Walle, Matthew D Vukovich
Van De Walle, GP and Vukovich, MD. The effect of nitrate supplementation on exercise tolerance and performance: a systematic review and meta-analysis. J Strength Cond Res 32(6): 1796-1808, 2018-The purpose of this article was to systematically review the current literature and evaluate the overall efficacy of nitrate supplementation on exercise tolerance and performance by meta-analysis. Studies were eligible for inclusion if they met the following criteria: (a) were an experimental trial published in an English peer-reviewed journal; (b) compared the effects of inorganic nitrate consumption with a non-bioactive supplement control or placebo; (c) used a quantifiable measure of exercise performance; and (d) was carried out in apparently healthy participants without disease...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29786632/influences-of-playing-position-and-quality-of-opposition-on-standardized-relative-distance-covered-in-domestic-women-s-field-hockey-implications-for-coaches
#5
Don Vinson, Nicola Gerrett, David V B James
Vinson, D, Gerrett, N, and James, DVB. Influences of playing position and quality of opposition on standardized relative distance covered in domestic women's field hockey: Implications for coaches. J Strength Cond Res 32(6): 1770-1777, 2018-The purpose of this study was to compare the standardized relative distance covered by the various playing positions (defenders, midfielders, and forwards) against different quality of opponents in domestic women's field hockey. Data were collected from 13 individuals competing for 1 team in the English Premier League across an 18-game season...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29786628/influence-of-team-s-rank-on-soccer-referees-external-and-internal-match-loads-during-official-matches
#6
Daniel Castillo, Carlo Castagna, Jesús Cámara, Aitor Iturricastillo, Javier Yanci
Castillo, D, Castagna, C, Cámara, J, Iturricastillo, A, and Yanci, J. Influence of team's rank on soccer referees' external and internal match loads during official matches. J Strength Cond Res 32(6): 1715-1722, 2018-The aim was to examine the external and the internal match loads (ML) of field referees (FRs) attending teams of different ranking during championship matches. Twenty FR who officiated in 30 official soccer matches (30 observations) participated in our study. The criteria for allocating the soccer referees' ML results were based on the teams' final league positions as follows: matches performed by Top 10 teams (TOP10), matches performed by bottom 10 teams (BOT10), and matches played among TOP10 and BOT10 teams (MIXED)...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29786627/association-of-physical-and-technical-activities-with-partial-match-status-in-a-soccer-professional-team
#7
Wassim Moalla, Mohamed Saieffedin Fessi, Emna Makni, Alexandre Dellal, Cristoforo Filetti, Valter Di Salvo, Karim Chamari
Moalla, W, Fessi, MS, Makni, E, Dellal, A, Filetti, C, Di Salvo, V, and Chamari, K. Association of physical and technical activities with partial match status in a soccer professional team. J Strength Cond Res 32(6): 1708-1714, 2018-The purpose of this study was to examine the association between physical and technical activities and partial match status (winning, drawing, or losing) in a professional soccer team over 2 seasons. Physical and technical activities of 52 official matches were collected and analyzed at each 15-minute interval, for each half (45 minutes), and full match (90 minutes) using a multiple-camera computerized tracking system...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29786624/relationship-between-dryland-strength-and-swimming-performance-pull-up-mechanics-as-a-predictor-of-swimming-speed
#8
José I Pérez-Olea, Pedro L Valenzuela, Concepción Aponte, Mikel Izquierdo
Pérez-Olea, JI, Valenzuela, PL, Aponte, C, and Izquierdo, M. Relationship between dryland strength and swimming performance: pull-up mechanics as a predictor of swimming speed. J Strength Cond Res 32(6): 1637-1642, 2018-This study aimed to examine the validity of the countermovement jump (CMJ) and the pull-up exercise as predictors of swimming performance. Twelve young male swimmers (Mean ± SD, 19 ± 3 years; 75 ± 10 kg; 180 ± 6 cm) with a homogenous level of performance (50-m freestyle time [50F]: 26.41 ± 1...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29786618/acoustic-performance-of-dual-electrode-electrostatic-sound-generators-based-on-cvd-graphene-on-polyimide-film
#9
Kyoung-Ryul Lee, Sung Hwan Jang, Inhwa Jung
We investigated the acoustic performance of electrostatic sound-generating devices consisting of bilayer graphene on polyimide (PI) film. Total sound pressure level (SPL) of sound generated from the devices was measured as a function of source frequency by sweeping, and frequency spectra were measured at 1/3 octave band frequencies. The relationship between various operation conditions and total SPL was determined. In addition, the effects of changing voltage level, adding a DC offset, and using two pairs of electrodes were evaluated...
May 22, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29786416/zinc-oxide-enhanced-piezoelectret-polypropylene-microfiber-for-mechanical-energy-harvesting
#10
Jianxiong Zhu, Yali Zhu, Weixing Song, Hui Wang, Min Gao, Minkyu Cho, Inkyu Park
This paper reports zinc oxide (ZnO) coated piezoelectret polypropylene (PP) microfibers with a structure of two opposite arc-shaped braces for enhanced mechanical energy harvesting. The ZnO film was coated onto PP microfibers via magnetron sputtering to form a ZnO/PP compound structure. Triboelectric Nanogenerator (TENG) based on ZnO/PP microfiber compound film was carefully designed with two opposite arc-shaped braces. The results of this study demonstrated that the mechanical energy collection efficiency of TENG based on piezoelectret PP microfiber was greatly enhanced by the coated ZnO and high voltage corona charging method...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29786028/evaluation-of-a-distance-learning-academic-support-program-for-medical-graduates-during-rural-hospital-service-in-india
#11
Rashmi Vyas, Anand Zachariah, Isobel Swamidasan, Priya Doris, Ilene Harris
Background: Christian Medical College (CMC), Vellore, India, a tertiary care hospital, designed a year-long Fellowship in Secondary Hospital Medicine (FSHM) for CMC graduates, with the aim to support them during rural service and be motivated to consider practicing in these hospitals. The FSHM was a blend of 15 paper-based distance learning modules, 3 contact sessions, community project work, and networking. This paper reports on the evaluation of the FSHM program. Methods: The curriculum development process for the FSHM reflected the six-step approach including problem identification, needs assessment, formulating objectives, selecting educational strategies, implementation, and evaluation...
September 2017: Education for Health: Change in Training & Practice
https://www.readbyqxmd.com/read/29785908/rapid-detection-of-adulteration-of-milks-from-different-species-using-fourier-transform-infrared-spectroscopy-ftir
#12
Olgun Cirak, N Cihat Icyer, M Zeki Durak
The aim of the studies reported in the Research Communication was to develop a rapid spectroscopic technique as an alternative method for the classification and discrimination of milk sources by Fourier transform infrared spectroscopy (FTIR). Cow, sheep and water buffalo milk samples were collected from various local milk producers in Istanbul, Turkey. In addition, various brands of packaged milk were purchased locally. Spectrums were obtained according to milk species origin and binary mixtures prepared in increments of 10% (10, 20, 30, 40, 50, 60, 70, 80 and 90%) for each sample analysed in FTIR spectroscopy...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785859/apposition-and-positioning-of-the-nellix-endovascular-aneurysm-sealing-system-in-the-infrarenal-aortic-neck
#13
Kim van Noort, Simon P Overeem, Ruben van Veen, Jan M M Heyligers, Michel M P J Reijnen, Richte C L Schuurmann, Cornelis H Slump, Rogier Kropman, Jean-Paul P M de Vries
PURPOSE: To investigate the initial proximal position and seal of the Nellix EndoVascular Aneurysm Sealing (EVAS) system in the aortic neck using a novel methodology. METHODS: Forty-six consecutive patients who underwent elective EVAS for an abdominal aortic aneurysm were retrospectively selected and dichotomized into an early (n = 23) and a late (n = 23) group. The aortic neck morphology and aortic neck surface (ANS) were determined on preoperative computed tomography (CT) scans; the endograft position and nonapposition surface (NAS) were determined on the 1-month CT scans...
May 1, 2018: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/29785834/development-of-a-robust-mri-fiducial-system-for-automated-fusion-of-mr-us-abdominal-images
#14
Christopher P Favazza, Krzysztof R Gorny, Matthew R Callstrom, Anil N Kurup, Michael Washburn, Pamela S Trester, Charles L Fowler, Nicholas J Hangiandreou
We present the development of a two-component magnetic resonance (MR) fiducial system, that is, a fiducial marker device combined with an auto-segmentation algorithm, designed to be paired with existing ultrasound probe tracking and image fusion technology to automatically fuse MR and ultrasound (US) images. The fiducial device consisted of four ~6.4 mL cylindrical wells filled with 1 g/L copper sulfate solution. The algorithm was designed to automatically segment the device in clinical abdominal MR images...
May 21, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29785729/tg-51-reference-dosimetry-for-the-halcyon%C3%A2-a-clinical-experience
#15
Samantha A M Lloyd, Tze Yee Lim, Xenia Fave, Everardo Flores-Martinez, Todd F Atwood, Vitali Moiseenko
Halcyon™ is a single-energy (6 MV-FFF), bore-enclosed linear accelerator. Patient setup is performed by first aligning to external lasers mounted to the front of the bore, and then loading to isocenter through pre-defined couch shifts. There is no light field, optical distance indicator or front pointer mechanism, so positioning is verified through MV imaging with kV imaging scheduled to become available in the future. TG-51 reference dosimetry was successfully performed for Halcyon™ in this imaging-based setup paradigm...
May 21, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29785698/specific-parasites-indirectly-influence-niche-occupation-of-non-hosts-community-members
#16
João Custódio Fernandes Cardoso, Radek Michalko, Marcelo Oliveira Gonzaga
The coexistence of phylogenetically related species is an attractive topic because of the potentially intense interspecific competition. The most often investigated mechanisms mediating coexistence of these species are environmental filtering and niche partitioning. However, the role of other factors, such as species-specific parasites, is still poorly understood. Along the riparian understory of a tropical forest, we explored niche occupation and coexistence between Chrysso intervales and Helvibis longicauda, two related syntopic web-building spiders...
May 22, 2018: Oecologia
https://www.readbyqxmd.com/read/29785677/analysis-of-the-frequency-of-visualization-of-morphological-variations-in-anatomical-bone-features-in-the-mandibular-interforaminal-region-through-cone-beam-computed-tomography
#17
Marilza do Carmo Oliveira, Tamara Kerber Tedesco, Thais Gimenez, Sergio Allegrini
PURPOSE: The purpose of this study was to analyze the frequency of visualization of anatomical bone features and their possible variations in the mandibular interforaminal region through cone-beam computed tomography (CBCT). METHODS: This is a cross-sectional study that evaluated CBCT scans of the mandible of 141 women and 61 men, obtained by imaging archives from two private clinics of dental radiology. The study analyzed the frequency of visualization of: lingual symphyseal foramen (LSF), additional mental foramen (AdMF), absence of mental foramen (AbMF), mandibular incisive canal (MIC), and anterior loop (AL)...
May 21, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29785646/investigating-the-spatial-trends-in-the-level-of-organic-contaminants-in-the-ethiopian-rift-valley-lakes-using-semipermeable-membrane-devices
#18
Ermias Deribe
Organic pollutants in the Ethiopian Rift Valley Lakes are the major factors that contribute to severe environmental problem. SPMDs were deployed for the analysis of selected organic pollutants for 1 month at 2 sites in Lakes Hawassa, Ziway and Koka, Ethiopia. From SPMDs placed in the three lakes, the predominant OCPs were DDT which comprise 67% and followed by endosulfan 23% of the total organochlorine pesticides (OCPs) retrieved. The highest level of OCPs, in general, was found in the SPMDs deployed in Lake Ziway with the mean concentration of 308...
May 21, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29785589/a-novel-technology-for-3d-knee-prosthesis-planning-and-treatment-evaluation-using-2d-x-ray-radiographs-a-clinical-evaluation
#19
Guoyan Zheng, Hagen Hommel, Alper Akcoltekin, Benedikt Thelen, Jan Stifter, Geert Peersman
PURPOSE:  To present a clinical validation of a novel technology called "3X" which allows for 3D prosthesis planning and treatment evaluation in total knee arthroplasty (TKA) using only 2D X-ray radiographs. MATERIALS AND METHODS:  After local institution review board approvals, 3X was evaluated on 43 cases (23 for preoperative planning and 20 for postoperative treatment evaluation). All the patients underwent CT scans according to a standard protocol...
May 21, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29785545/development-of-gp-and-gep-models-to-estimate-an-environmental-issue-induced-by-blasting-operation
#20
Roohollah Shirani Faradonbeh, Mahdi Hasanipanah, Hassan Bakhshandeh Amnieh, Danial Jahed Armaghani, Masoud Monjezi
Air overpressure (AOp) is one of the most adverse effects induced by blasting in the surface mines and civil projects. So, proper evaluation and estimation of the AOp is important for minimizing the environmental problems resulting from blasting. The main aim of this study is to estimate AOp produced by blasting operation in Miduk copper mine, Iran, developing two artificial intelligence models, i.e., genetic programming (GP) and gene expression programming (GEP). Then, the accuracy of the GP and GEP models has been compared to multiple linear regression (MLR) and three empirical models...
May 21, 2018: Environmental Monitoring and Assessment
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