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https://www.readbyqxmd.com/read/28636633/playing-with-fire-what-is-influencing-horse-owners-decisions-to-not-vaccinate-their-horses-against-deadly-hendra-virus-infection
#1
Kailiea Arianna Goyen, John David Wright, Alexandra Cunneen, Joerg Henning
Hendra virus is a zoonotic paramyxovirus, which causes severe respiratory and neurological disease in horses and humans. Since 2012, the Hendra virus sub-unit G vaccine has been available for horse vaccination in Australia. Uptake of the vaccine has been limited and spill-over events of Hendra virus infection in horses continue to occur. We conducted an online, questionnaire-based cross-sectional study of 376 horse owners belonging to a variety of different equestrian clubs in Queensland, Australia, to identify risk factors for non-vaccination against Hendra virus...
2017: PloS One
https://www.readbyqxmd.com/read/28636435/effects-of-a-contrast-training-programme-on-jumping-sprinting-and-agility-performance-of-prepubertal-basketball-players
#2
Pedro Ángel Latorre Román, Francisco Javier Villar Macias, Felipe García Pinillos
The purpose of this study was to examine the effects of a 10 week contrast training (CT) programme (isometric + plyometric) on jumping, sprinting abilities and agility performance in prepubertal basketball players. Fifty-eight children from a basketball academy (age: 8.72 ± 0.97 years; body mass index: 17.22 ± 2.48 kg/m(2)) successfully completed the study. Participants were randomly assigned to experimental groups (EG, n = 30) and control groups (CG, n = 28). The CT programme was included in the experimental group's training sessions - twice a week - as part of their usual weekly training regime...
June 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28632275/architectures-of-soft-robotic-locomotion-enabled-by-simple-mechanical-principles
#3
Liangliang Zhu, Yunteng Cao, Yilun Liu, Zhe Yang, Xi Chen
In nature, a variety of limbless locomotion patterns flourish, from the small or basic life forms (Escherichia coli, amoebae, etc.) to the large or intelligent creatures (e.g., slugs, starfishes, earthworms, octopuses, jellyfishes, and snakes). Many bioinspired soft robots based on locomotion have been developed in the past few decades. In this work, based on the kinematics and dynamics of two representative locomotion modes (i.e., worm-like crawling and snake-like slithering), we propose a broad set of innovative designs for soft mobile robots through simple mechanical principles...
June 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28632047/reliability-and-magnitude-of-mechanical-variables-assessed-from-unconstrained-and-constrained-loaded-countermovement-jumps
#4
Amador García-Ramos, Slobodan Jaric, Alejandro Pérez-Castilla, Paulino Padial, Belén Feriche
This study aimed to (1) assess the reliability of the force, velocity, and power output variables measured by a force plate and a linear velocity transducer (LVT) for both the unconstrained and constrained loaded countermovement jump (CMJ), and (2) examine the effect of both the CMJ type and the measurement method on the magnitudes of the same variables. Twenty-three men were tested on the free CMJ and the CMJ constrained by a Smith machine. Maximum values of force, velocity, and power were recorded by a force plate and by a LVT attached to a bar loaded by 17, 30, 45, 60, and 75 kg...
February 24, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28628178/jumping-drops-on-hydrophobic-surfaces-controlling-energy-transfer-by-timed-electric-actuation
#5
Zhantao Wang, Dirk van den Ende, Arjen Pit, Rudy Lagraauw, Daniël Wijnperlé, Frieder Mugele
Aqueous sessile drops are launched from a super-hydrophobic surface by electric actuation in an electrowetting configuration with a voltage pulse of variable duration. We show that the jump height, i.e. the amount of energy that is transferred from surface energy to the translational degree of freedom, depends not only on the applied voltage but also in a periodic manner on the duration of the actuation pulse. Specifically, we find that the jump height for a pulse of optimized duration is almost twice as high as the one obtained upon turning off the voltage after equilibration of the drop under electrowetting...
June 19, 2017: Soft Matter
https://www.readbyqxmd.com/read/28622721/control-of-structural-and-electrical-transitions-of-vo2-thin-films
#6
Adele Moatti, Ritesh Sachan, John Prater, Jay Narayan
Unstrained and defect-free VO2 single crystals undergo structural (from high temperature tetragonal to low temperature monoclinic phase) and electronic phase transitions simultaneously. In thin films, however, in the presence of unrelaxed strains and defects, structural (Peierls) and electronic (Mott) transitions are affected differently, and are separated. In this paper, we have studied the temperature-dependence of structural and electrical transitions in epitaxially grown vanadium dioxide films on (0001) sapphire substrates...
June 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28622468/theoretical-evaluation-of-viv-%C3%AE-c3s5-3-2-as-nuclear-spin-sensitive-single-molecule-spin-transistor
#7
Salvador Cardona Serra, Alejandro Gaita-Ariño, Maria Stamenova, Stefano Sanvito
In a straightforward application of molecular nanospintronics to quantum computing, single-molecule spin transistors can be used to measure and control nuclear spin qubits. A jump in the conductance occurs when the electronic spin inverts its polarization, and this happens at a so-called anticrossing between energy levels, which in turn only takes place at a specific magnetic field determined by the nuclear spin state. So far, this procedure has only been implemented for the terbium(III) bis(phthalocyaninato) complex...
June 16, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28619292/psychophysiological-response-in-parachute-jumps-the-effect-of-experience-and-type-of-jump
#8
Vicente Javier Clemente-Suárez, José Juan Robles-Pérez, Jesús Fernández-Lucas
We aimed to analyse the effect of experience and type of parachute jump on the psychophysiological responses of jumpers. We analysed blood oxygen saturation, heart rate, blood glucose, lactate and creatinkinase, leg strength, isometric hand strength, cortical arousal, specific fine motor skills, self-confidence and cognition, and somatic and state anxiety, before and after four different parachute jumps: a sport parachute jump, a manual tactical parachute jump, tandem pilots, and tandem passengers. Independently of the parachute jump, the psychophysiological responses of experienced paratroopers were not affected by the jumps, except for an increase in anaerobic metabolism...
June 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28618538/study-of-dynamic-heterogeneity-of-an-active-particle-system
#9
Huai Ding, Huijun Jiang, Zhonghuai Hou
We have studied spatial and temporal dynamic heterogeneity (DH) in a system of hard-sphere particles, subjected to active forces with constant amplitude and random direction determined by rotational diffusion with correlation time τ. We have used a variety of observables to characterize the DH behavior, including the deviation from standard Stokes-Einstein (SE) relation, a non-Gaussian parameter α_{2}(Δt) for the distribution of particle displacement within a certain time interval Δt, a four-point susceptibility χ_{4}(Δt,ΔL) for the correlation in dynamics between any two points in space separated by distance ΔL within some time window Δt, and a vector spatial-temporal correlation function S_{vec}(R,Δt) for vector displacements within time interval Δt of particle pairs originally separated by R...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28613274/experimental-neutron-scattering-evidence-for-proton-polaron-in-hydrated-metal-oxide-proton-conductors
#10
Artur Braun, Qianli Chen
Hydration of oxygen-deficient metal oxides causes filling of oxygen vacancies and formation of hydroxyl groups with interstitial structural protons, rotating around the oxygen in localized motion. Thermal activation from 500 to 800 K triggers delocalization of the protons by jumping to adjacent oxygen ions, constituting proton conductivity. We report quantitative analyses of proton and lattice dynamics by neutron-scattering data, which reveal the interaction of protons with the crystal lattice and proton-phonon coupling...
June 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/28611965/dissociation-of-polyethylene-liner-of-the-dual-mobility-acetabular-component-after-closed-reduction-of-dislocation-a-case-report
#11
Kee Hyung Rhyu, Chan Il Bae, Ju-Hyun Nam, Jung-Gwon Bae, Yoon Je Cho, Young Soo Chun
A dual mobility acetabular component has a structure that combines a polyethylene liner and a femoral head, unlike the general design of acetabular cups, making the dissociation of a polyethylene liner highly unlikely. In addition, it increases the range of motion and reduces the possibility of dislocations by increasing a jump distance. A fifty-one-year-old male who had received total hip arthroplasty with the dual mobility acetabular component visited a hospital for a posterior hip dislocation 10 weeks after the operation...
June 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/28605306/behaviour-tracking-and-three-year-longitudinal-associations-between-physical-activity-screen-time-and-fitness-among-young-children
#12
Morgan Potter, John C Spence, Normand Boulé, Jodie A Stearns, Valerie Carson
PURPOSE: Understanding the correlates of children's fitness as they develop is needed. The objectives of this study were to: (1) examine the longitudinal associations between physical activity (PA), screen time (ST), and fitness, (2) determine if sex moderates associations, and (3) track PA and ST over three years. METHODS: Findings are based on 649 children (baseline: 4.5±0.5 years; follow-up: 7.8±0.6 years) from Edmonton, Canada. Parental-reported hour/week of PA and ST were measured at baseline and three years later...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605214/influence-of-reactive-strength-index-modified-on-force-and-power-time-curves
#13
John J McMahon, Paul A Jones, Timothy J Suchomel, Jason Lake, Paul Comfort
PURPOSE: The reactive strength index modified (RSImod) has been recently identified and validated as a method of monitoring countermovement jump (CMJ) performance. The kinetic and kinematic mechanisms that optimize a higher RSImod score are, however, currently unknown. The purpose of this study, therefore, was to compare entire CMJ force-, power-, velocity- and displacement-time curves (termed temporal phase analysis) of athletes who achieve high versus low RSImod scores. METHODS: Fifty-three professional male rugby league players performed three maximal effort CMJs on a force platform and variables of interest were calculated via forward dynamics...
June 12, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28604654/postural-control-in-elite-decathlon-athletes-are-various-modes-of-dynamic-assessment-needed
#14
Sven Reuter, Philipp Forkel, Andreas B Imhoff, Knut Beitzel
BACKGROUND: Decathlon consists of various track and field running, jumping and throwing events. This results in high physical demands and poor postural control may predispose athletes at a higher risk for injury. The purpose of this study was to measure and to show a relationship of different dynamic postural control tests in healthy professional decathlon athletes. METHODS: The German top decathlon team (eight professional athletes, mean age±standard deviation (SD), 20...
July 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28603965/constructing-3d-graphene-networks-in-polymer-composites-for-significantly-improved-electrical-and-mechanical-properties
#15
Peng Wang, Haodan Chong, Jiajia Zhang, Hongbin Lu
Graphene-based polymer composites with superior electrical and mechanical performance are highly desirable because of their wide range of applications. However, due to the mismatch between charge jumping and the load transfer of adjacent graphene sheets, it remains difficult to achieve significant, simultaneous improvements in electrical and mechanical properties of graphene-polymer composites. To overcome this issue, we here propose an effective strategy to constructed unique 3D conductive networks in which the compatibility of graphene and polymer can be improved by controlled decoration of few-defect graphene sheets, while segregated graphene networks retain good charge-jumping capability...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28601498/self-reported-cognitive-distortions-in-the-psychosis-continuum-a-polish-18-item-version-of-the-davos-assessment-of-cognitive-biases-scale-dacobs-18
#16
Łukasz Gawęda, Katarzyna Prochwicz, Martyna Krężołek, Joanna Kłosowska, Maciej Staszkiewicz, Steffen Moritz
AIM: The aim of this study was to provide a short version of the Davos Assessment of Cognitive Biases Scale (DACOBS), which is a self-report tool to assess cognitive distortions related to psychosis. METHODS: A principal component analysis (PCA) was conducted on a large non-clinical sample (n=1207) and cross-validated with a confirmatory factor analysis on an independent non-clinical sample (n=653). Discriminative validity was performed by contrasting the high risk for psychosis non-clinical sample (n=63), low risk for psychosis non-clinical sample (n=152), patients with schizophrenia (n=105), and patients with depression (n=56)...
June 7, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28597622/the-effect-of-training-load-on-neuromuscular-performance-muscle-soreness-and-wellness-during-an-in-season-non-competitive-week-in-elite-rugby-athletes
#17
Francisco Tavares, Phil Healey, Tiaki B Smith, Matthew Driller
BACKGROUND: In the elite Rugby setting, it is critical to understand the effects of training load on the levels of fatigue, soreness and readiness of the athletes. METHODS: The training load, wellness, neuromuscular markers of fatigue and various perceptual measures of soreness of 16 elite Rugby athletes were monitored during a training week. Training load was obtained for field training sessions, extra conditioning and gym-based sessions. Perceptual fatigue was obtained every morning from a 5-item wellness questionnaire and a questionnaire on the muscle soreness of 9 different muscle sites from each side of the body...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28596068/meaning-of-activation-energy-in-phospholipid-multibilayers-phase-transitions
#18
K Lonhus, L Budianska, L Lisetski
The question of the activation energy of phase transitions in lyotropic liquid crystal phases of model phospholipid membranes was considered. In our experiments, we obtained DSC thermograms of hydrated DPPC and DMPC at different scanning rates, and activation energy values were determined by a modification of Kissinger non-isothermal kinetics method. Using this approach the equivalent order of reaction corresponding to the phase transition can be determined alongside the activation energy. The cooperativity of both main transition and pre-transition was shown to be strongly dependent on scanning rate, asymptotically tending to a certain value at high rates, which corresponds to the number of lipid molecules in two concentric layers of hexagonal tiling...
June 5, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28595238/distinguishing-playing-status-through-a-functionally-relevant-performance-measure-in-female-division-i-collegiate-soccer-athletes
#19
Mitchel A Magrini, Ryan J Colquhoun, John H Sellers, Eric C Conchola, Garrett M Hester, Ryan M Thiele, Zach K Pope, Doug B Smith
Although soccer is predominately an endurance sport, high velocity movements may be an important indicator of athletic success. The purpose of this investigation was to establish whether squat jumps (SJ) can differentiate starters from non-starters with a female collegiate division I soccer team. Eighteen female division I soccer athletes were separated into two groups: 9 starters (age: 19.5 ± 1.0; mass = 64.8 ± 11.5 kg; height = 167.5 ± 7.7 cm; games started = 18.2 ± 4.7; minutes played = 1633.8 ± 478...
June 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28592487/electrostatic-control-of-dna-intersegmental-translocation-by-the-ets-transcription-factor-etv6
#20
Tam Vo, Shuo Wang, Gregory M K Poon, W David Wilson
To find their DNA target sites in complex solution environments containing excess heterogeneous DNA, sequence-specific DNA-binding proteins execute various translocation mechanisms known collectively as facilitated diffusion. For proteins harboring a single DNA contact surface, long-range translocation occurs by jumping between widely spaced DNA segments. We have configured biosensor-based surface plasmon resonance to directly measure the affinity and kinetics of this intersegmental jumping by the ETS-family transcription factor ETS variant 6 (ETV6)...
June 7, 2017: Journal of Biological Chemistry
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