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https://www.readbyqxmd.com/read/29150657/specific-heat-electrical-resistivity-and-electronic-band-structure-properties-of-noncentrosymmetric-th7fe3-superconductor
#1
V H Tran, M Sahakyan
Noncentrosymmetric superconductor Th7Fe3 has been investigated by means of specific heat, electrical resisitivity measurements and electronic properties calculations. Sudden drop in the resistivity at 2.05 ± 0.15 K and specific heat jump at 1.98 ± 0.02 K are observed, rendering the superconducting transition. A model of two BCS-type gaps appears to describe the zero-magnetic-field specific heat better than those based on the isotropic BCS theory or anisotropic functions. A positive curvature of the upper critical field H c2(T c) and nonlinear field dependence of the Sommerfeld coefficient at 0...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29147670/isokinetic-extension-strength-is-associated-with-single-leg-vertical-jump-height
#2
Felix Fischer, Cornelia Blank, Tobias Dünnwald, Peter Gföller, Elmar Herbst, Christian Hoser, Christian Fink
Background: Isokinetic strength testing is an important tool in the evaluation of the physical capacities of athletes as well as for decision making regarding return to sports after anterior cruciate ligament (ACL) reconstruction in both athletes and the lay population. However, isokinetic testing is time consuming and requires special testing equipment. Hypothesis: A single-jump test, regardless of leg dominance, may provide information regarding knee extension strength through the use of correlation analysis of jump height and peak torque of isokinetic muscle strength...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29143442/development-of-biomimetic-thermoplastic-polyurethane-fibroin-small-diameter-vascular-grafts-via-a-novel-electrospinning-approach
#3
Emily Yu, Hao-Yang Mi, Jue Zhang, James A Thomson, Lih-Sheng Turng
A new electrospinning approach for fabricating vascular grafts with a layered, circumferentially aligned, and micro-wavy fibrous structure similar to natural elastic tissues has been developed. The customized electrospinning collector was able to generate wavy fibers using the dynamic "jump rope" collecting process, which also solved the sample removal problem for mandrel-type collectors. In this study, natural silk fibroin and synthetic thermoplastic polyurethane (TPU) were combined at different weight ratios to produce hybrid small-diameter vascular grafts...
November 16, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29141877/giving-invertebrates-an-eye-exam-an-ophthalmoscope-that-utilizes-the-autofluorescence-of-photoreceptors
#4
Annette Stowasser, Madeline Owens, Elke K Buschbeck
One of the most important functional features of eyes is focusing light, as both nearsightedness and farsightedness have major functional implications. Accordingly, refractive errors are frequently assessed in vertebrates, but not in the very small invertebrate eyes. We describe a micro-ophthalmoscope that takes advantage of autofluorescent properties of invertebrate photoreceptors and test the device on the relatively well-understood eyes of jumping spiders and flies. In each case, our measurements confirmed previous findings with a greater degree of accuracy...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29141434/dynamic-heterogeneity-in-an-orientational-glass
#5
Nirvana B Caballero, Mariano Zuriaga, Josep Lluís Tamarit, Pablo Serra
The family of compounds CBrnCl4-n has been proven helpful in unraveling microscopic mechanisms responsible for glassy behavior. Some of the family members show translational ordered phases with minimal disorder which appears to reveal glassy features, thus deserving special attention in the search for universal glass anomalies. In this work, we studied CBrCl3 dynamics by performing extensive molecular dynamics simulations. Molecules of this compound perform reorientational discrete jumps, where the atoms exchange equivalent positions among each other revealing a cage-orientational jump motion fully comparable to the cage-rototranslational jump motion in supercooled liquids...
November 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29140914/sequencing-effects-of-neuromuscular-training-on-physical-fitness-in-youth-elite-tennis-players
#6
Jaime Fernandez-Fernandez, Urs Granacher, David Sanz-Rivas, Jose Manuel Sarabia Marín, Jose Luis Hernandez-Davo, Manuel Moya
Fernandez-Fernandez, J, Granacher, U, Sanz-Rivas, D, Sarabia Marín, JM, Hernandez-Davo, JL, and Moya, M. Sequencing effects of neuromuscular training on physical fitness in youth elite tennis players. J Strength Cond Res XX(X): 000-000, 2017-The aim of this study was to analyze the effects of a 5-week neuromuscular training (NMT) implemented before or after a tennis session in prepubertal players on selected components of physical fitness. Sixteen elite and well-trained tennis players with a mean age of 12...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29133149/spontaneous-eye-blink-rate-an-index-of-dopaminergic-component-of-sustained-attention-and-fatigue
#7
Antonio Maffei, Alessandro Angrilli
Blink rate is a behavioral index highly correlated with frontostriatal dopaminergic activity. The present research was aimed at studying the modulation of spontaneous blink rate in function of the increasing attentional load induced by the Mackworth Clock Test. Since blinking interferes with sensory processing, we expected a decreasing blink rate with increasing attentional demand. Three tasks of 7-min each and different difficulties were administered: the Mackworth had a red dot moving in a circle with intervals varying from 500ms, 350ms to 200ms, corresponding to increasing task difficulty...
November 11, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29131573/flexible-and-lightweight-pressure-sensor-based-on-carbon-nanotube-thermoplastic-polyurethane-aligned-conductive-foam-with-superior-compressibility-and-stability
#8
Wenju Huang, Kun Dai, Yue Zhai, Hu Liu, Pengfei Zhan, Jiachen Gao, Guo-Qiang Zheng, Chuntai Liu, Changyu Shen
Flexible and lightweight carbon nanotubes (CNTs)/thermoplastic polyurethane (TPU) conductive foam with a novel aligned porous structure was fabricated. The density of the aligned porous material was as low as 0.123 g•cm-3. Homogeneous dispersion of CNTs was achieved through the skeleton of the foam, and an ultralow percolation threshold of 0.0023 vol.% was obtained. Compared with the disordered foam, mechanical properties of the aligned foam were enhanced and the piezoresistive stability of the flexible foam was improved significantly...
November 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29130575/a-prospective-investigation-to-evaluate-risk-factors-for-lower-extremity-injury-risk-in-male-youth-soccer-players
#9
Paul J Read, Jon L Oliver, Mark B A De Ste Croix, Gregory D Myer, Rhodri S Lloyd
There is an inherent risk of injury in male youth football; however, pertinent risk factors for injury have yet to be examined. This study used a prospective cohort design with 357 elite male youth football players (aged 10-18 years) assessed during the pre-season period and then monitored during the season recording all non-contact lower extremity injuries. Screening tests included: single leg hop for distance (SLHD); 75% of maximum hop and stick (75%Hop); single leg countermovement jump (SLCMJ); and the tuck jump assessment (TJ)...
November 11, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29120989/validity-and-reliability-of-a-new-test-of-planned-agility-in-elite-taekwondo-athletes
#10
Helmi Chaabene, Yassine Negra, Laura Capranica, Raja Bouguezzi, Younés Hachana, Mohamed Ali Rouahi, Bessem Mkaouer
This study aimed to examine the validity, reliability, and sensitivity of a new test of planned agility in elite taekwondo athletes and to establish its relationship with sprint-time, jumping ability, and dynamic balance. Twenty-seven (20 males and 7 females) taekwondo athletes participated to this study. They performed taekwondo-specific agility test (TSAT) in two occasions (i.e., test-retest). Additionally, they performed jumping ability (i.e., squat jump, countermovement jump, standing long jump, and three-hop jump), sprint-time (5-m and 20-m dash), and dynamic balance (i...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29120868/crystal-magnetic-calorimetric-and-electronic-structure-investigation-of-gdscge1-x-sb-x-compounds
#11
F Guillou, A K Pathak, T A Hackett, D Paudyal, Y Mudryk, V K Pecharsky
Experimental investigations of crystal structure, magnetism and heat capacity of compounds in the pseudoternary GdScGe-GdScSb system combined with density functional theory projections have been employed to clarify the interplay between the crystal structure and magnetism in this series of RTX materials (R  =  rare-earth, [Formula: see text]  =  transition metal and X  =  p-block element). We demonstrate that the CeScSi-type structure adopted by GdScGe and CeFeSi-type structure adopted by GdScSb coexist over a limited range of compositions [Formula: see text]...
November 9, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29120418/ultra-selective-looming-detection-from-radial-motion-opponency
#12
Nathan C Klapoetke, Aljoscha Nern, Martin Y Peek, Edward M Rogers, Patrick Breads, Gerald M Rubin, Michael B Reiser, Gwyneth M Card
Nervous systems combine lower-level sensory signals to detect higher-order stimulus features critical to survival, such as the visual looming motion created by an imminent collision or approaching predator. Looming-sensitive neurons have been identified in diverse animal species. Different large-scale visual features such as looming often share local cues, which means loom-detecting neurons face the challenge of rejecting confounding stimuli. Here we report the discovery of an ultra-selective looming detecting neuron, lobula plate/lobula columnar, type II (LPLC2) in Drosophila, and show how its selectivity is established by radial motion opponency...
November 8, 2017: Nature
https://www.readbyqxmd.com/read/29118316/distinct-campylobacter-fetus-lineages-adapted-as-livestock-pathogens-and-human-pathobionts-in-the-intestinal-microbiota
#13
Gregorio Iraola, Samuel C Forster, Nitin Kumar, Philippe Lehours, Sadjia Bekal, Francisco J García-Peña, Fernando Paolicchi, Claudia Morsella, Helmut Hotzel, Po-Ren Hsueh, Ana Vidal, Simon Lévesque, Wataru Yamazaki, Claudia Balzan, Agueda Vargas, Alessandra Piccirillo, Bonnie Chaban, Janet E Hill, Laura Betancor, Luis Collado, Isabelle Truyers, Anne C Midwinter, Hatice T Dagi, Francis Mégraud, Lucía Calleros, Ruben Pérez, Hugo Naya, Trevor D Lawley
Campylobacter fetus is a venereal pathogen of cattle and sheep, and an opportunistic human pathogen. It is often assumed that C. fetus infection occurs in humans as a zoonosis through food chain transmission. Here we show that mammalian C. fetus consists of distinct evolutionary lineages, primarily associated with either human or bovine hosts. We use whole-genome phylogenetics on 182 strains from 17 countries to provide evidence that C. fetus may have originated in humans around 10,500 years ago and may have "jumped" into cattle during the livestock domestication period...
November 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/29118237/weapon-damage-is-associated-with-contest-dynamics-but-not-mating-success-in-fallow-deer-dama-dama
#14
Dómhnall J Jennings, Richard J Boys, Martin P Gammell
Antlers function as primary weapons during fights for many species of ungulate. We examined the association between antler damage and (i) contest dynamics: the behavioural tactics used during fighting including fight duration, and (ii) mating success, fighting rate and dominance. Structural damage of the antlers was associated with contest dynamics: damage was negatively associated with jump clash attacks by individuals with damaged antlers, whereas opponents were more likely to physically displace individuals with damaged antlers during fighting...
November 2017: Biology Letters
https://www.readbyqxmd.com/read/29116831/clinician-friendly-physical-performance-tests-for-the-knee
#15
Jerrod J Harrison, Marissa K Yorgey, Alexander J Csiernik, Joseph H Vogler, Kenneth E Games
Reference:  Hegedus EJ, McDonough S, Bleakley C, Cook CE, Baxter GD. Clinician-friendly lower extremity physical performance measures in athletes: a systematic review of measurement properties and correlation with injury. Part 1: the tests for knee function including the hop tests. Br J Sports Med. 2015;49(10):642-648. CLINICAL QUESTION:   Do individual physical performance tests (PPTs) used as measures for lower extremity function have any relationship to injuries in athletes aged 12 years or older? DATA SOURCES:   Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to locate articles...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29100218/the-hand-in-project-jump-starting-communication-between-inpatient-and-outpatient-providers
#16
Jürgen L Holleck, Craig G Gunderson, Sheila M Antony, Shaili Gupta, John J Chang, Naseema Merchant, Shin Lin, Daniel G Federman
OBJECTIVES: Communication between hospitalists and primary care providers (PCPs) upon discharge has been much discussed, but the transition from outpatient to inpatient has received less attention. We questioned whether a brief, standardized e-mail from the hospitalist to the PCP upon admission could facilitate information exchange, increase communication, elucidate PCP preferences, and improve outcomes. METHODS: This prospective single-center study with a preintervention-to-postintervention design involved 300 inpatient admissions from June 2015 through October 2015 in the Veterans Affairs Connecticut Healthcare System...
November 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/29099523/a-potential-strategy-for-counteracting-age-related-sarcopenia-preliminary-evidence-of-combined-exercise-training-and-leucine-supplementation
#17
Z Xia, J M Cholewa, Y Zhao, Y Yang, H Shang, H Jiang, Q Su, N E Zanchi
Previous research has demonstrated the positive effects of concurrent/combined aerobic and resistance exercise or leucine supplementation on skeletal muscle protein synthesis (MPS) and hypertrophy in aging organisms. However, the effects of a multimodal intervention which combines both aerobic and resistance exercise and leucine supplementation has not been fully elucidated. Eighteen month old and 2 month old C57BL/6 mice were assigned to aging control (AC, n = 8), aging and multimodal intervention (AMI, n = 8) and young control (YC, n = 8)...
November 3, 2017: Food & Function
https://www.readbyqxmd.com/read/29097300/kinetic-evidence-for-interaction-of-tmpyp4-with-two-different-g-quadruplex-conformations-of-human-telomeric-dna
#18
Cristina Pérez-Arnaiz, Natalia Busto, Javier Santolaya, José M Leal, Giampaolo Barone, Begoña García
BACKGROUND: Stabilization of G-quadruplex helices by small ligands has attracted growing attention because they inhibit the activity of the enzyme telomerase, which is overexpressed in >80% cancer cells. TMPyP4, one of the most studied G-quadruplex ligands, is used as a model to show that the ligands can exhibit different binding features with different conformations of a human telomeric specific sequence. METHODS: UV-Vis, FRET melting Assay, Isothermal Titration Calorimetry, Time-resolved Fluorescence lifetime, T-Jump and Molecular Dynamics...
October 30, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29092472/a-new-dispersion-interferometer-on-hl-2a
#19
H X Wang, Y Zhou, Y Li, Y G Li, J Yi, Z C Deng, Z Gao, T Y Wu, Z J Yin, T Akiyama
In order to avoid a fringe jump caused by high plasma density and pellet injection [Y. Zhou et al., Rev. Sci. Instrum. 87, 11E107 (2016)], a new CO2 dispersion interferometer is designed and commissioned on HL-2A for average line-density measurement and density feedback control. The second harmonic technology in this system eliminates the phase shift caused by mechanical vibration. Signals are processed by a digital phase comparator and can be monitored in real time. A series of experiments are conducted to study the characteristics of the system such as a second harmonic coefficient and long-term stability...
October 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29091519/a-pilot-rct-investigating-the-effects-of-targeted-compression-on-athletes-with-pelvic-groin-pain
#20
Leanne Sawle, Jennifer Freeman, Jonathan Marsden
CONTEXT: Athletic pelvic/groin pain is a common yet often challenging problem to both diagnose and manage. A new tool has been developed based on the clinical effects of applied force on the pelvis. Early findings indicate that this customised compression orthosis may have a positive effect upon pelvic/groin pain and performance measures. OBJECTIVES: To: Inform the design and test the practicality of procedures for a future definitively powered randomized controlled trial; Provide an estimate of the effect size of this orthosis on selected clinical and performance measures...
November 1, 2017: Journal of Sport Rehabilitation
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