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Vanessa J Kumpf, Jose Eduardo de Aguilar-Nascimento, Jose Ignacio Diaz-Pizarro Graf, Amber M Hall, Liam McKeever, Ezra Steiger, Marion F Winkler, Charlene W Compher
BACKGROUND: The management of patients with enterocutaneous fistula (ECF) requires an interdisciplinary approach and poses a significant challenge to physicians, wound/stoma care specialists, dietitians, pharmacists, and other nutrition clinicians. Guidelines for optimizing nutrition status in these patients are often vague, based on limited and dated clinical studies, and typically rely on individual institutional or clinician experience. Specific nutrient requirements, appropriate route of feeding, role of immune-enhancing formulas, and use of somatostatin analogues in the management of patients with ECF are not well defined...
December 2, 2016: JPEN. Journal of Parenteral and Enteral Nutrition
J Seong, C Hall, S Young, C Parkinson, E Macdonald, S Bodfel Jones, N X West
OBJECTIVES: To compare the abrasive wear on human dentine in an in situ model associated with use of an experimental low abrasivity anti-sensitivity dentifrice containing 1% alumina and 5% sodium tripolyphosphate (STP) with an experimental ultra-low abrasivity non-alumina 5% STP dentifrice, a higher abrasivity daily-use whitening dentifrice, and water as controls. METHODS: This was a single-centre, single-blind, randomised, split-mouth, four-treatment, two-period, crossover in situ study in 29 healthy subjects...
November 29, 2016: Journal of Dentistry
A V Kudrin, S M Plankina, O V Vikhrova, A V Nezhdanov, A I Mashin, Yu N Drozdov, A V Shvetsov
Confocal micro-Raman spectroscopy was used to measure cross-section linescans of the cleaved edge of heterostructures involving a GaMnAs layer. The investigations revealed a shift of the TO mode in the compressed GaMnAs layer to high frequencies relative to the TO GaAs mode in the substrate and to low frequencies in the tensile GaMnAs layers. These results are in agreement with the different manifestations of the anomalous Hall effect in the GaMnAs layers, with either compressive or tensile strains. It is shown that Raman spectroscopy is an appropriate method for the investigation of cross-sectional semiconductor heterostructures whose total thickness is comparable to the size of the analyzing laser spot...
November 21, 2016: Micron: the International Research and Review Journal for Microscopy
Antonio Mendoza Ladd, Yi Jia, Christine Yu, Sherif Elhanafi, Alok Dwivedi, Jiayang Liu, Giangqing Song, Mark Hall, Marc J Zuckerman
OBJECTIVES: Information regarding Hispanics with inflammatory bowel disease (IBD) is scarce. In this study we aimed to describe a predominantly Hispanic population with IBD in a city located along the US-Mexico border and to identify clinical or demographic differences between Hispanics and non-Hispanics. METHODS: Retrospective cohort analysis of patients with IBD between 2003 and 2013 at a tertiary care center. Information collected included age, sex, ethnicity, diagnosis, diagnosis status (new vs old), endoscopic extent of disease (EOD), extraintestinal manifestations, medical treatment, and surgeries performed...
December 2016: Southern Medical Journal
Sarath C Ranganathan, Graham L Hall, Peter D Sly, Stephen M Stick, Tonia A Douglas
The past decade has seen significant advances in understanding of the pathogenesis and progression of lung disease in cystic fibrosis. Pulmonary inflammation, infection and structural lung damage manifest very early in life and is prevalent among preschool children and infants, often in the absence of symptoms or signs. Early childhood represents a pivotal period amenable to intervention strategies that could delay or prevent the onset of lung damage and alter the longer term clinical trajectory for individuals with CF...
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
Siavash Golkar, Dung Xuan Nguyen, Matthew M Roberts, Dam Thanh Son
Fractional quantum Hall liquids exhibit a rich set of excitations, the lowest energy of which are the magnetorotons with dispersion minima at a finite momentum. We propose a theory of the magnetorotons on the quantum Hall plateaux near half filling, namely, at filling fractions ν=N/(2N+1) at large N. The theory involves an infinite number of bosonic fields arising from bosonizing the fluctuations of the shape of the composite Fermi surface. At zero momentum there are O(N) neutral excitations, each carrying a well-defined spin that runs integer values 2,3,…...
November 18, 2016: Physical Review Letters
Ulrike Stockert, Peijie Sun, Niels Oeschler, Frank Steglich, Toshiro Takabatake, Piers Coleman, Silke Paschen
The "failed Kondo insulator" CeNiSn has long been suspected to be a nodal metal, with a node in the hybridization matrix elements. Here we carry out a series of Nernst effect experiments to delineate whether the severely anisotropic magnetotransport coefficients do indeed derive from a nodal metal or can simply be explained by a highly anisotropic Fermi surface. Our experiments reveal that despite an almost twentyfold anisotropy in the Hall conductivity, the large Nernst signal is isotropic. Taken in conjunction with the magnetotransport anisotropy, these results provide strong support for an isotropic Fermi surface with a large anisotropy in quasiparticle mass derived from a nodal hybridization...
November 18, 2016: Physical Review Letters
Ran Cheng, Satoshi Okamoto, Di Xiao
In a collinear antiferromagnet with easy-axis anisotropy, symmetry guarantees that the spin wave modes are doubly degenerate. The two modes carry opposite spin angular momentum and exhibit opposite chirality. Using a honeycomb antiferromagnet in the presence of the Dzyaloshinskii-Moriya interaction, we show that a longitudinal temperature gradient can drive the two modes to opposite transverse directions, realizing a spin Nernst effect of magnons with vanishing thermal Hall current. We find that magnons around the Γ point and the K point contribute oppositely to the transverse spin transport, and their competition leads to a sign change of the spin Nernst coefficient at finite temperature...
November 18, 2016: Physical Review Letters
Vladimir A Zyuzin, Alexey A Kovalev
We predict that a temperature gradient can induce a magnon-mediated spin Hall response in an antiferromagnet with nontrivial magnon Berry curvature. We develop a linear response theory which gives a general condition for a Hall current to be well defined, even when the thermal Hall response is forbidden by symmetry. We apply our theory to a honeycomb lattice antiferromagnet and discuss a role of magnon edge states in a finite geometry.
November 18, 2016: Physical Review Letters
Francis Grondin, Toby Hall
The purpose of this study was to investigate the influence of isolated temporomandibular joint (TMJ) manual therapy on pain and range of motion (ROM) of the TMJ and cervical spine including flexion-rotation test (FRT) in people suffering chronic pain arising from chronic arthralgic temporomandibular disorder (TMD). An experienced clinician managed a case series of 12 patients with TMD (mean duration 28.6 months +/- 26.9). The intervention comprised four-weekly sessions of transverse medial accessory TMJ mobilization and advice...
December 2, 2016: Physiotherapy Theory and Practice
Kangkang Meng, Jun Miao, Xiaoguang Xu, Yong Wu, Jiaxing Xiao, Jianhua Zhao, Yong Jiang
We report modulated switching current density and spin-orbit torques (SOT) in MnGa/Ta films with inserting very thin Co2FeAl and Co layers. Ferromagnetic coupling has been found in MnGa/Co2FeAl/Ta, resulting in a decreased effective anisotropy field. On the contrary, in MnGa/Co/Ta, antiferromagnetic coupling plays a dominant role. The switching current density Jc in MnGa/Ta is 8.5 × 10(7) A/cm(2). After inserting 0.8-nm-thick Co2FeAl and Co, theJc becomes 5 × 10(7) A/cm(2) and 9 × 10(7) A/cm(2), respectively...
December 2, 2016: Scientific Reports
C R Stillman, P M Nilson, S T Ivancic, C Mileham, I A Begishev, R K Junquist, D J Nelson, D H Froula
A picosecond, time-resolved, x-ray spectroscopy platform was developed to study the thermal line emission from rapidly heated solid targets containing buried aluminum or iron layers. The targets were driven by high-contrast 1ω or 2ω laser pulses at focused intensities up to 1 × 10(19) W/cm(2). The experimental platform combines time-integrating and time-resolved x-ray spectrometers. Picosecond time resolution was achieved with a pair of ultrafast x-ray streak cameras coupled to high-throughput Hall spectrometers...
November 2016: Review of Scientific Instruments
Gorky Shaw, R B G Kramer, N M Dempsey, K Hasselbach
We present a scanning Hall probe microscope operating in ambient conditions. One of the unique features of this microscope is the use of the same stepper motors for both sample positioning as well as scanning, which makes it possible to have a large scan range (few mm) in the x and y directions, with a scan resolution of 0.1 μm. Protocols have been implemented to enable scanning at different heights from the sample surface. The z range is 35 mm. Microstructured Hall probes of size 1-5 μm have been developed...
November 2016: Review of Scientific Instruments
I Ďuran, S Entler, M Kohout, M Kočan, G Vayakis
Performance of bismuth Hall sensors developed for the ITER steady state magnetic diagnostic was investigated for high magnetic fields in the range ±7 T. Response of the sensors to the magnetic field was found to be nonlinear particularly within the range ±1 T. Significant contribution of the planar Hall effect to the sensors output voltage causing undesirable cross field sensitivity was identified. It was demonstrated that this effect can be minimized by the optimization of the sensor geometry and alignment with the magnetic field and by the application of "current-spinning technique...
November 2016: Review of Scientific Instruments
G Nemtsev, V Amosov, S Meshchaninov, S Popovichev, R Rodionov
We present the results of analysis of triton burn-up process using the data from diamond detector. Neutron monitor based on CVD diamond was installed in JET torus hall close to the plasma center. We measure the part of 14 MeV neutrons in scenarios where plasma current varies in a range of 1-3 MA. In this experiment diamond neutron monitor was also able to detect strong gamma bursts produced by runaway electrons arising during the disruptions. We can conclude that CVD diamond detector will contribute to the study of fast particles confinement and help predict the disruption events in future tokamaks...
November 2016: Review of Scientific Instruments
Merlin Pohlit, Paul Eibisch, Maryam Akbari, Fabrizio Porrati, Michael Huth, Jens Müller
Alongside the development of artificially created magnetic nanostructures, micro-Hall magnetometry has proven to be a versatile tool to obtain high-resolution hysteresis loop data and access dynamical properties. Here we explore the application of First Order Reversal Curves (FORC)-a technique well-established in the field of paleomagnetism for studying grain-size and interaction effects in magnetic rocks-to individual and dipolar-coupled arrays of magnetic nanostructures using micro-Hall sensors. A proof-of-principle experiment performed on a macroscopic piece of a floppy disk as a reference sample well known in the literature demonstrates that the FORC diagrams obtained by magnetic stray field measurements using home-built magnetometers are in good agreement with magnetization data obtained by a commercial vibrating sample magnetometer...
November 2016: Review of Scientific Instruments
N Izumi, N B Meezan, L Divol, G N Hall, M A Barrios, O Jones, O L Landen, J J Kroll, S A Vonhof, A Nikroo, J Jaquez, C G Bailey, C M Hardy, R B Ehrlich, R P J Town, D K Bradley, D E Hinkel, J D Moody
The high fuel capsule compression required for indirect drive inertial confinement fusion requires careful control of the X-ray drive symmetry throughout the laser pulse. When the outer cone beams strike the hohlraum wall, the plasma ablated off the hohlraum wall expands into the hohlraum and can alter both the outer and inner cone beam propagations and hence the X-ray drive symmetry especially at the final stage of the drive pulse. To quantitatively understand the wall motion, we developed a new experimental technique which visualizes the expansion and stagnation of the hohlraum wall plasma...
November 2016: Review of Scientific Instruments
G N Hall, N Izumi, O L Landen, R Tommasini, J P Holder, D Hargrove, D K Bradley, A Lumbard, J G Cruz, K Piston, J J Lee, E Romano, P M Bell, A C Carpenter, N E Palmer, B Felker, V Rekow, F V Allen
Compton radiography provides a means to measure the integrity, ρR and symmetry of the DT fuel in an inertial confinement fusion implosion near peak compression. Upcoming experiments at the National Ignition Facility will use the ARC (Advanced Radiography Capability) laser to drive backlighter sources for Compton radiography experiments and will use the newly commissioned AXIS (ARC X-ray Imaging System) instrument as the detector. AXIS uses a dual-MCP (micro-channel plate) to provide gating and high DQE at the 40-200 keV x-ray range required for Compton radiography, but introduces many effects that contribute to the spatial resolution...
November 2016: Review of Scientific Instruments
Tania Janaudis-Ferreira, Tamara Araujo, Julia Marie Romano, Pat G Camp, Mark Hall, Sunita Mathur, Dina Brooks
Purpose: To investigate the opinions of final-year Canadian physiotherapy students of cardiorespiratory physiotherapy (CRP) and the factors influencing their decision about whether to pursue a career in CRP. Methods: A cross-sectional online survey was completed by final-year Master of Science of Physical Therapy students from three of the largest English-speaking physiotherapy schools in Canada. Results: A total of 120 students responded to the survey (overall response rate was 44%). Fifteen students (12.5%) responded that they were extremely or quite interested in specializing in CRP...
2016: Physiotherapy Canada. Physiothérapie Canada
Mark Hall, Patricia Manns, Cheryl Poth, Lauren Beaupre
Purpose: To gauge the need for a new assessment instrument for Canadian physiotherapy students on clinical placements. Methods: A national survey was developed and distributed to 18,110 Canadian physiotherapists. Results: A total of 3,148 physiotherapists from diverse practice settings responded to the survey. Of those who indicated that student evaluation was applicable to them (n=2,393), 70% stated that a new instrument was needed; of these, 78% felt that the new instrument should be based on Canadian practice standards and rated with an anchored visual analogue scale, and 73% said they would be comfortable completing the instrument online...
2016: Physiotherapy Canada. Physiothérapie Canada
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