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https://www.readbyqxmd.com/read/29792211/the-impact-of-ankle-foot-orthoses-on-toe-clearance-strategy-in-hemiparetic-gait-a-cross-sectional-study
#1
Kannit Pongpipatpaiboon, Masahiko Mukaino, Fumihiro Matsuda, Kei Ohtsuka, Hiroki Tanikawa, Junya Yamada, Kazuhiro Tsuchiyama, Eiichi Saitoh
BACKGROUND: Ankle-foot orthoses (AFOs) are frequently used to improve gait stability, toe clearance, and gait efficiency in individuals with hemiparesis. During the swing phase, AFOs enhance lower limb advancement by facilitating the improvement of toe clearance and the reduction of compensatory movements. Clinical monitoring via kinematic analysis would further clarify the changes in biomechanical factors that lead to the beneficial effects of AFOs. The purpose of this study was to investigate the actual impact of AFOs on toe clearance, and determine the best strategy to achieve toe clearance (including compensatory movements) during the swing phase...
May 23, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29789463/properties-of-ferrite-garnet-bi-lu-y-%C3%A2-fe-ga-%C3%A2-o-12-thin-film-materials-prepared-by-rf-magnetron-sputtering
#2
Mohammad Nur-E-Alam, Mikhail Vasiliev, Vladimir Belotelov, Kamal Alameh
This work is devoted to physical vapor deposition synthesis, and characterisation of bismuth and lutetium-substituted ferrite-garnet thin-film materials for magneto-optic (MO) applications. The properties of garnet thin films sputtered using a target of nominal composition type Bi0.9 Lu1.85 Y0.25 Fe4.0 Ga₁O12 are studied. By measuring the optical transmission spectra at room temperature, the optical constants and the accurate film thicknesses can be evaluated using Swanepoel's envelope method. The refractive index data are found to be matching very closely to these derived from Cauchy's dispersion formula for the entire spectral range between 300 and 2500 nm...
May 22, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29789347/scaling-of-avian-bipedal-locomotion-reveals-independent-effects-of-body-mass-and-leg-posture-on-gait
#3
REVIEW
Monica A Daley, Aleksandra Birn-Jeffery
Birds provide an interesting opportunity to study the relationships between body size, limb morphology and bipedal locomotor function. Birds are ecologically diverse and span a large range of body size and limb proportions, yet all use their hindlimbs for bipedal terrestrial locomotion, for at least some part of their life history. Here, we review the scaling of avian striding bipedal gaits to explore how body mass and leg morphology influence walking and running. We collate literature data from 21 species, spanning a 2500× range in body mass from painted quail to ostriches...
May 22, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29788714/negative-capacitance-beyond-ferroelectric-switches
#4
Ashwani Kumar, Premlal Balakrishna Pillai, Xiaoyao Song, Maria De Souza
Negative capacitance transistors are a unique class of switches capable of operation beyond the Boltzmann limit to realise sub-thermionic switching. Until now, the negative capacitance effect has been predominantly attributed to devices employing an unstable insulator with ferroelectric properties, exhibiting a two-well energy landscape, in accordance with Landau theory. The theory and operation of a solid electrolyte Field Effect Transistor (SE-FET) of subthreshold swing less than 60 mV/dec in the absence of a ferroelectric gate dielectric is demonstrated in this work...
May 23, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29787248/efficient-n-doping-and-hole-blocking-in-single-walled-carbon-nanotube-transistors-with-1-2-4-5-tetrakis-tetramethyl-guanidino-benzene
#5
Severin Schneider, Maximilian Brohmann, Roxana Lorenz, Yvonne J Hofstetter, Marcel Rother, Eric Sauter, Michael Zharnikov, Yana Vaynzof, Hans-Joerg Himmel, Jana Zaumseil
Efficient, stable and solution-based n-doping of semiconducting single-walled carbon nanotubes (SWCNTs) is highly desired for complementary circuits but remains a significant challenge. Here we present 1,2,4,5-tetrakis(tetramethyl-guanidino)benzene (ttmgb) as a strong two-electron donor that enables the fabrication of purely n-type SWCNT field-effect transistors (FETs). We apply ttmgb to networks of monochiral, semiconducting (6,5) SWCNTs that show intrinsic ambipolar behavior in bottom-contact/top-gate FETs and obtain unipolar n-type transport with 3 to 5 fold enhancement of electron mobilities (approx...
May 22, 2018: ACS Nano
https://www.readbyqxmd.com/read/29786846/the-pendulum-swings-back-screening-for-prostate-cancer-in-2018
#6
EDITORIAL
Ian M Thompson
No abstract text is available yet for this article.
May 22, 2018: Cancer
https://www.readbyqxmd.com/read/29785225/bipolar-dislocation-of-the-arm-shoulder-and-elbow-about-one-case-in-an-african-teaching-hospital
#7
D A Songahir Christophe, Korsaga Alexandre, Tinto Sayouba, Sawadogo Mamoudou, Kafando Hamado, Ouedraogo Anatole Jean Innocent, Zeida Charles, Keita Namori, Tall Mohamed
We report an exceptional clinical case of an ipsilateral dislocation fracture of the shoulder and right elbow, realizing a "swinging arm". Following a violent road accident, patient S.I, a 43-year-old left-handed sports educator, presented with an antero-medial shoulder dislocation fracture and a posterolateral ipsilateral elbow fracture-dislocation. The reduction in urgency, followed by the orthopedic compression by Mayo Clinic and functional rehabilitation, allowed obtaining a good result after seven months...
2018: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/29782679/mos-2-negative-capacitance-field-effect-transistors-with-subthreshold-swing-below-the-physics-limit
#8
Xingqiang Liu, Renrong Liang, Guoyun Gao, Caofeng Pan, Chunsheng Jiang, Qian Xu, Jun Luo, Xuming Zou, Zhenyu Yang, Lei Liao, Zhong Lin Wang
The Boltzmann distribution of electrons induced fundamental barrier prevents subthreshold swing (SS) from less than 60 mV dec-1 at room temperature, leading to high energy consumption of MOSFETs. Herein, it is demonstrated that an aggressive introduction of the negative capacitance (NC) effect of ferroelectrics can decisively break the fundamental limit governed by the "Boltzmann tyranny". Such MoS2 negative-capacitance field-effect transistors (NC-FETs) with self-aligned top-gated geometry demonstrated here pull down the SS value to 42...
May 21, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29780677/the-2016-southeastern-us-drought-an-extreme-departure-from-centennial-wetting-and-cooling
#9
A Park Williams, Benjamin I Cook, Jason E Smerdon, Daniel A Bishop, Richard Seager, Justin S Mankin
The fall 2016 drought in the southeastern United States (SE US) appeared exceptional based on its widespread impacts, but the current monitoring framework that only extends from 1979-present does not readily facilitate evaluation of soil-moisture anomalies in a centennial context. A new method to extend monthly gridded soil-moisture estimates back to 1895 is developed, indicating that since 1895, October-November 2016 soil moisture (0-200 cm) in the SE US was likely the second lowest on record, behind 1954...
October 27, 2017: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/29779364/swing-door-overlay-tympanoplasty-surgical-technique-and-outcomes
#10
So Young Park, Hyuk Jae Lee, Myung Joo Shim, Dong Kee Kim, Byung Do Suh, Shi Nae Park
Objectives: The classical overlay tympanoplasty is technically difficult with some disadvantages and thus less popular. However, it is particularly useful for large, anterior perforations. In this study, we describe the technique of a modified overlay graft in the tympanoplasty coined as the swing-door overlay tympanoplasty and report its outcomes. Methods: Retrospective review of patients undergoing the swing-door overlay tympanoplasty at a tertiary referral center between 2003 and 2016 was performed...
May 22, 2018: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/29778418/correlation-between-translational-and-rotational-kinematic-abnormalities-and-osteoarthritis-like-damage-in-two-in-vivo-sheep-injury-models
#11
Mehdi Shekarforoush, Jillian E Beveridge, David A Hart, Cyril B Frank, Nigel G Shrive
The relations between kinematic abnormalities and post traumatic osteoarthritis have not yet been clearly elucidated. This study was conducted to determine the finite helical axes parameters and the tibiofemoral translation vector in the knee joints of two surgically induced injury sheep models: anterior cruciate ligament and medial collateral ligament transection (ACL/MCL Tx) (n = 5) and lateral meniscectomy (n = 5). We hypothesized that morphological damage in the experimental joints would be correlated to alterations in these kinematic variables...
May 16, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29778054/at-risk-symptoms-of-bipolar-disorder-in-a-university-student-cohort
#12
Ida S Haussleiter, Sandra Lorek, Eike Zeschel, Svenja Mattausch, Milena Meyers, Georg Juckel
To assess the occurrence and frequency of bipolar at-risk symptoms in a large sample of previously undiagnosed students using the new screening tool Bochumer Screeningbogen Bipolar (BSB). 2329 students of the Ruhr-University Bochum, Germany completed online demographic data as well as various self-rating questionnaires (BSB; Hypomania Checklist 32; Altman Self-Rating Mania Scale; Beck Depression Inventory). Within the student cohort (64.4% female, mean age 24.3 years) every fifth student currently suffered from moderate to severe depressive symptoms; every sixth student had already thought about suicide and every other student reported a history of mood swings...
May 6, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29777653/prenatal-hydronephrosis-another-swing-of-the-pendulum
#13
EDITORIAL
Andrew L Freedman
No abstract text is available yet for this article.
May 16, 2018: Journal of Urology
https://www.readbyqxmd.com/read/29776999/stumbling-corrective-reaction-elicited-by-mechanical-and-electrical-stimulation-of-the-saphenous-nerve-in-walking-mice
#14
William Paganini Mayer, Turgay Akay
The ability to walk around in a natural environment requires the capacity to cope with unexpected obstacles that may disrupt locomotion. One such mechanism is called the stumbling corrective reaction (SCR) that enables animals to step over obstacles that would otherwise disturb the progression of swing movement. Here we use in vivo motion analysis and physiological recording techniques to describe the SCR in mice. We show that SCR can be elicited consistently in mice during locomotion by inserting an obstacle along the path of leg movement during swing phase...
May 18, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29775941/effects-of-arm-weight-on-gait-performance-in-healthy-subjects
#15
Hyung Suk Yang, C Roger James, Lee T Atkins, Steven F Sawyer, Phillip S Sizer, Neeraj A Kumar, Jongyeol Kim
Previous studies have investigated how additional arm weights affect gait. Although light weights (0.45 kg) seemed to elicit performance improvements in Parkinsonian patients, it was not studied how light weights affect gait parameters in healthy individuals. It is important to understand normal responses in a healthy population so that clinical effects might be better understood. Therefore, the purpose of this study was to investigate the effects of arm weights on arm swing amplitude, gait performance, and muscle activity in healthy people...
May 15, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29773349/robot-assisted-training-using-hybrid-assistive-limb%C3%A2-for-cerebral-palsy
#16
Mayumi Matsuda, Nobuaki Iwasaki, Yuki Mataki, Hirotaka Mutsuzaki, Kenichi Yoshikawa, Kazushi Takahashi, Keiko Enomoto, Kumiko Sano, Aoi Kubota, Tomohiro Nakayama, Junko Nakayama, Haruka Ohguro, Masafumi Mizukami, Kazuhide Tomita
PURPOSE: The Hybrid Assistive Limb® (HAL®, CYBERDYNE) is a wearable robot that provides assistance to a patient while they are walking, standing, and performing leg movements based on the wearer's intended movement. The effect of robot-assisted training using HAL® for cerebral palsy (CP) is unknown. Therefore, we assessed the effect of robot-assisted training using HAL® on patients with CP, and compared walking and gross motor abilities between pre-intervention and post-intervention...
May 14, 2018: Brain & Development
https://www.readbyqxmd.com/read/29772166/pixel-counting-of-fluorescence-spots-triggered-by-dna-walkers-for-ultrasensitive-quantification-of-nucleic-acid
#17
Longyi Zhu, Qihui Liu, Bangyu Yang, Huangxian Ju, Jianping Lei
A pixel counting strategy is designed based on DNA walker-triggered fluorescence spots for ultrasensitive detection of nucleic acid. The two-dimensional DNA walker was constructed by hybridization of the dye-labeled hairpin structure (hDNA) as track and swing strand (sDNA) as DNAzyme with two types of capture DNAs covalently modified by click chemistry on glass slide. Introduction of target DNA unlocked the sDNA via strand displacement to form the activated DNAzyme, and the latter cut nearby hDNA with Mn2+ as cofactor, resulting in fluorescence recovery of dye-labeled hDNA on the substrate due to the separation from the quencher...
May 17, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29771754/orbital-decompression-for-thyroid-related-orbitopathy-during-the-quiescent-phase
#18
Lilangi S Ediriwickrema, Bobby S Korn, Don O Kikkawa
PURPOSE: To describe historical and modern surgical approaches to orbital decompression in patients with thyroid-related orbitopathy in the quiescent phase. METHODS: A literature review of published techniques using the National Institutes of Health PubMed database. RESULTS: Historically, orbital decompression has been accomplished via transantral, transcranial, transnasal, and orbital approaches. Current techniques use predominately periocular incisions to achieve effective decompression and proptosis reduction...
May 2, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29767500/enhanced-performance-of-field-effect-transistors-based-on-black-phosphorus-channels-reduced-by-galvanic-corrosion-of-al-over-layers
#19
Sangik Lee, Chansoo Yoon, Ji Hye Lee, Yeon Soo Kim, Mi Jung Lee, Wondong Kim, Jaeyoon Baik, Quanxi Jia, Bae Ho Park
Two-dimensional (2D) layered semiconducting materials with considerable bandgaps are emerging as a new class of materials applicable to next-generation devices. Particularly, black phosphorus (BP) is considered to be very promising for next-generation 2D electrical and optical devices due to its high carrier mobility of 200-1000 cm2 V-1 s-1 and large on/off ratio of 104 -105 in field effect transistors. However, its environmental instability in air requires fabrication processes in a glove box filled with nitrogen or argon gas followed by encapsulation, passivation, and chemical functionalization of BP...
May 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29765175/the-impact-of-walking-speed-on-interlimb-coordination-in-individuals-with-parkinson-s-disease
#20
Cheng-Chieh Lin, Robert C Wagenaar
[Purpose] Interlimb coordination can be affected by the symptoms associated with Parkinson's disease and may result in an increased risk of falls. The purpose of the current study was to compare changes in interlimb coordination in individuals with Parkinson's disease to healthy older adults while systematically manipulating walking speed. [Subjects and Methods] Participants walked on a treadmill while systematically increasing and decreasing the walking speed between 0.22 and 1.30 m/s. Kinematic data were collected by means of a three dimensional motion capture system...
May 2018: Journal of Physical Therapy Science
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