keyword
MENU ▼
Read by QxMD icon Read
search

Swinging

keyword
https://www.readbyqxmd.com/read/28340512/activation-mechanisms-of-%C3%AE-v%C3%AE-3-integrin-by-binding-to-fibronectin-a-computational-study
#1
Lingyun Wang, Di Pan, Qi Yan, Yuhua Song
Integrin αVβ3 plays an important role in regulating cellular activities and in human diseases. Although the structure of αVβ3 has been studied by crystallography and electron microscopy, the detailed activation mechanism of integrin αVβ3 induced by fibronectin (Fn) remains unclear. In this study, we investigated the conformational and dynamical motion changes of Mn(2+) -bound integrin αVβ3 by binding to Fn with molecular dynamics simulations. Results showed that Fn binding to integrin αVβ3 caused the changes of the conformational flexibility of αVβ3 domains, the essential mode of motion for the domains of αV subunit and β3 subunit and the degrees of correlated motion of residues between the domains of αV subunit and β3 subunit of integrin αVβ3...
March 24, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28338437/contralateral-peripheral-neurotization-for-a-hemiplegic-hindlimb-after-central-neurological-injury
#2
Mou-Xiong Zheng, Xu-Yun Hua, Su Jiang, Yan-Qun Qiu, Yun-Dong Shen, Wen-Dong Xu
OBJECTIVE Contralateral peripheral neurotization surgery has been successfully applied to rescue motor function of the hemiplegic upper extremity in patients with central neurological injury (CNI). It may contribute to strengthened neural pathways between the contralesional cortex and paretic limbs. However, the effect of this surgery in the lower extremities remains unknown. In the present study the authors explored the effectiveness and safety of contralateral peripheral neurotization in treating a hemiplegic lower extremity following CNI in adult rats...
March 24, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28337913/selective-conversion-from-p-type-to-n-type-of-printed-bottom-gate-carbon-nanotube-thin-film-transistors-and-application-in-cmos-inverters
#3
Qiqi Xu, Jianwen Zhao, Vincenzo Pecunia, Wenya Xu, Chunshan Zhou, Junyan Dou, Weibing Gu, Jian Lin, Lixin Mo, Yanfei Zhao, Zheng Cui
The fabrication of printed high-performance and environmentally stable n-type single-walled carbon nanotube (SWCNT) transistors and their integration into complementary (i.e. CMOS) circuits are widely recognized as key to achieving the full potential of carbon nanotube electronics. Here, we report a simple, efficient, and robust method to convert the polarity of SWCNT thin-film transistors (TFTs) using cheap and readily available ethanolamine as electron doping agent. Printed p-type bottom-gate SWCNT TFTs can be selectively converted into n-type by deposition of ethanolamine inks on the transistor active region via aerosol jet printing...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28336970/a-steep-slope-transistor-combining-phase-change-and-band-to-band-tunneling-to-achieve-a-sub-unity-body-factor
#4
Wolfgang A Vitale, Emanuele A Casu, Arnab Biswas, Teodor Rosca, Cem Alper, Anna Krammer, Gia V Luong, Qing-T Zhao, Siegfried Mantl, Andreas Schüler, A M Ionescu
Steep-slope transistors allow to scale down the supply voltage and the energy per computed bit of information as compared to conventional field-effect transistors (FETs), due to their sub-60 mV/decade subthreshold swing at room temperature. Currently pursued approaches to achieve such a subthermionic subthreshold swing consist in alternative carrier injection mechanisms, like quantum mechanical band-to-band tunneling (BTBT) in Tunnel FETs or abrupt phase-change in metal-insulator transition (MIT) devices...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332481/investigation-of-chemical-vapour-deposition-mos2-field-effect-transistors-on-sio2-and-zro2-substrates
#5
Xi Liu, Yang Chai, Zhaojun Liu
With the development of portable electronics, higher performance transistors are required to reduce the form factor and improve the performance of the devices. The key issue relies on developing transistors with outstanding electrical properties and low energy consumption at small scale. Here we demonstrate chemical vapor deposition (CVD) grown MoS2 transistors with a high on/off ratio using ZrO2 as a gate dielectric. Using 10 nm thick ZrO2, the transistor has an on/off ratio of 10(8), a sub-threshold swing of 0...
March 23, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28332045/an-unusual-mechanism-of-coracoid-fracture-in-a-beginner-golfer
#6
Ju Hong Lee, Jung Ryul Kim, Sung Il Wang
Golfers may injure themselves as a result of repetitive asymmetrical loads exerted on the body by poor swing mechanics. If the repetitive sub-maximal loading is not removed, this repetitive loading will exceed the adaptive capacity of bone, eventually resulting in a stress fracture. Stress fracture of the scapula due to golfing is extremely rare. Only two cases of acromion fracture have been reported. A rare case of nontraumatic coracoid fracture in a 50-year-old female beginner golfer is reported here. The mechanism of injury is also discussed...
March 22, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28331470/triphasic-waves-swinging-the-pendulum-back-in-this-diagnostic-dilemma
#7
Adriana Bermeo-Ovalle
No abstract text is available yet for this article.
January 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/28324994/co-activation-periods-of-gastrocnemius-and-vastus-lateralis-during-walking-evaluated-by-surface-electromyography
#8
Alessandro Mengarelli, Annachiara Strazza, Agnese Sbrollini, Angela Agostinelli, Laura Burattini, Sandro Fioretti, Francesco Di Nardo
"In vivo" studies reported that the co-activation of gastrocnemius and quadriceps femoris (QF) muscles produces ACL strain values greater than those caused by an isolated activation of either muscle. Aim of this study was to assess the co-activation of gastrocnemius (lateral head, GL) and vastus lateralis (VL) in healthy and young adults during walking. To this purpose the Statistical Gait Analysis was performed, that allows a characterization of gait considering hundreds of strides belonging to the same walking trial...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324993/dynamic-knee-muscle-co-contraction-quantified-during-walking
#9
Annachiara Strazza, Alessandro Mengarelli, Valentina Agostini, Marco Knaflitz, Laura Burattini, Sandro Fioretti, Francesco Di Nardo
The purpose of the present study was the quantification of the co-activation patterns of the knee extensor and flexor muscles during walking at self-selected speed and cadence. To this aim, the Statistical Gait Analysis, a recent methodology providing a statistical characterization of gait, was performed on surface EMG signals from Vastus Lateralis (VL) and Medial Hamstrings (MH) in 14 healthy young adult subjects. Muscular co-contraction was assessed as the overlapping period between activation intervals of agonist and antagonist muscles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324959/a-robotic-exoskeleton-to-treat-crouch-gait-from-cerebral-palsy-initial-kinematic-and-neuromuscular-evaluation
#10
Zachary F Lerner, Diane L Damiano, Thomas C Bulea
A robotic exoskeleton was designed for individuals with crouch gait caused by cerebral palsy with the intent to supplement existing muscle function during walking. The aim of this study was to evaluate how powered knee extension assistance provided during stance and swing phases of the gait cycle affect knee kinematics, and knee flexor and extensor muscle activity. Muscle activity and kinematic data were collected from four individuals with crouch gait from cerebral palsy during their normal walking condition and while walking with the exoskeleton under stance, swing, and stance & swing assistance...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324957/evaluation-of-skills-in-swing-technique-in-classical-japanese-swordsmanship-using-sensors
#11
S Okamoto
In this study, we analyzed the swing motions of more experienced practitioner and new practitioner of iaido players by using tri-axial acceleration sensor and gyro sensor. Iaido is a modern Japanese martial art/sport. In this way, the acceleration and gyro sensor measurement enabled detailed motion information at the installation points to be displayed in a short time, thus making it possible to easily extract the objective problems. Although it was not possible to confirm by the acceleration and angular velocity measurements the detailed motion of the entire body as obtained in the 2D motion analysis with a high-speed camera, it was confirmed that the acceleration and gyro sensor is an evaluation means that can be installed easily and can provide the exercise information in a short time as an objective index...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28323348/differences-in-flexor-and-extensor-activity-during-locomotor-related-leg-movements-in-chick-embryos
#12
Soo Yeon Sun, Nina S Bradley
Prior to hatching, chick embryos spontaneously produce repetitive limb movements (RLMs), a developmental precursor to walking. During RLMs, flexor and extensor muscles are alternately active as during stance and swing phases of gait. However, previous studies of RLMs observed that flexor muscles were rhythmically active for many cycles, whereas extensors often failed to be recruited. Thus, we asked if flexor muscles are preferentially recruited during RLMs in chick embryos 1 day before hatching and onset of walking...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28323009/investigation-of-the-effects-of-transcranial-alternating-current-stimulation-tacs-on-self-paced-rhythmic-movements
#13
Manuel Varlet, Alanna Wade, Giacomo Novembre, Peter E Keller
Human rhythmic movements spontaneously entrain to external rhythmic stimuli. Such sensory-motor entrainment can attract movements to different tempi and enhance their efficiency, with potential clinical applications for motor rehabilitation. Here we investigate whether entrainment of self-paced rhythmic movements can be induced via transcranial alternating current stimulation (tACS), which uses alternating currents to entrain spontaneous brain oscillations at specific frequencies. Participants swung a handheld pendulum at their preferred tempo with the right hand while tACS was applied over their left or right primary motor cortex at frequencies equal to their preferred tempo (Experiment 1) or in the alpha (10Hz) and beta (20Hz) ranges (Experiment 2)...
March 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28321439/overexpression-of-parkinson-s-disease-associated-mutation-lrrk2-g2019s-in-mouse-forebrain-induces-behavioral-deficits-and-%C3%AE-synuclein-pathology
#14
Yulan Xiong, Stewart Neifert, Senthilkumar S Karuppagounder, Jeannette N Stankowski, Byoung Dae Lee, Jonathan C Grima, Guanxing Chen, Han Seok Ko, Yunjong Lee, Debbie Swing, Lino Tessarollo, Ted M Dawson, Valina L Dawson
Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene have been identified as an unambiguous cause of late-onset, autosomal-dominant familial Parkinson's disease (PD) and LRRK2 mutations are the strongest genetic risk factor for sporadic PD known to date. A number of transgenic mice expressing wild-type or mutant LRRK2 have been described with varying degrees of LRRK2-related abnormalities and modest pathologies. None of these studies directly addressed the role of the kinase domain in the changes observed and none of the mice present with robust features of the human disease...
March 2017: ENeuro
https://www.readbyqxmd.com/read/28319872/intrathecal-baclofen-bolus-reduces-exaggerated-extensor-coactivation-during-pre-swing-and-early-swing-of-gait-after-acquired-brain-injury
#15
John W Chow, Stuart A Yablon, Dobrivoje S Stokic
OBJECTIVE: To characterize the concurrent activation of rectus femoris (RF) and medial gastrocnemius (MG) muscles (extensor coactivation) during gait in subjects with pronounced resting hypertonia after acquired brain injury (ABI) and examine changes after intrathecal baclofen (ITB) bolus injection. METHODS: Magnitude and duration of extensor coactivation during different phases of gait were assessed by recording gait kinematics and activity in bilateral RF and MG muscles in 18 controls and 18 ABI subjects before and at 2, 4, and 6h after a 50-μg ITB injection...
March 2, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28318394/effect-of-foot-and-ankle-immobilization-on-able-bodied-gait-as-a-model-to-increase-understanding-about-bilateral-transtibial-amputee-gait
#16
Antonia Nepomuceno, Matthew J Major, Rebecca Stine, Steven Gard
BACKGROUND: The anatomical foot-ankle complex facilitates advancement of the stance limb through foot rockers and late-stance power generation during walking, but this mechanism is altered for persons with bilateral transtibial amputation when using passive prostheses. OBJECTIVES: To study the effects of bilateral foot and ankle immobilization on able-bodied gait to serve as a model for understanding gait of persons with bilateral transtibial amputation and associated compensatory mechanisms...
March 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28317993/capturing-the-multiscale-dynamics-of-membrane-protein-complexes-with-all-atom-mixed-resolution-and-coarse-grained-models
#17
Chenyi Liao, Xiaochuan Zhao, Jiyuan Liu, Severin T Schneebeli, John C Shelley, Jianing Li
The structures and dynamics of protein complexes are often challenging to model in heterogeneous environments such as biological membranes. Herein, we meet this fundamental challenge at attainable cost with all-atom, mixed-resolution, and coarse-grained models of vital membrane proteins. We systematically simulated five complex models formed by two distinct G protein-coupled receptors (GPCRs) in the lipid-bilayer membrane on the ns-to-μs timescales. These models, which suggest the swinging motion of an intracellular loop, for the first time, provide the molecular details for the regulatory role of such a loop...
March 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28316588/alterations-of-muscle-activation-pattern-in-stroke-survivors-during-obstacle-crossing
#18
Chenming Ma, Na Chen, Yurong Mao, Dongfeng Huang, Rong Song, Le Li
OBJECTIVE: This study investigates changes in the neuromuscular activation pattern of the lower limb muscles in stroke survivors when crossing obstacles of three different heights. METHODS: Eight stroke survivors and eight age-, height-, and gender-matched healthy controls were recruited and instructed to cross over obstacles with heights of 10, 20, and 30% leg length. Surface electromyography (EMG) signals were recorded from the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA), and medial gastrocnemius (MG) of both limbs...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28314362/design-of-high-performance-si-sige-heterojunction-tunneling-fets-with-a-t-shaped-gate
#19
Wei Li, Hongxia Liu, Shulong Wang, Shupeng Chen, Zhaonian Yang
In this paper, a new Si/SiGe heterojunction tunneling field-effect transistor with a T-shaped gate (HTG-TFET) is proposed and investigated by Silvaco-Atlas simulation. The two source regions of the HTG-TFET are placed on both sides of the gate to increase the tunneling area. The T-shaped gate is designed to overlap with N(+) pockets in both the lateral and vertical directions, which increases the electric field and tunneling rate at the top of tunneling junctions. Moreover, using SiGe in the pocket regions leads to the smaller tunneling distance...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28306199/surgical-management-of-extensive-osteoradionecrosis-in-nasopharyngeal-carcinoma-patients-with-the-maxillary-swing-approach-and-free-muscular-flaps
#20
N Y Choi, H J Kim, Chung-Hwan Baek
Radiation therapy has been a standard treatment for nasopharyngeal carcinoma. However, it can cause extensive osteoradionecrosis which is associated with catastrophic complications including carotid artery rupture, cerebral infection, brain necrosis and cachexia.(1,2,3,4) Most of the cases of limited osteoradionecrosis of the nasopharynx have been treated by endoscopic debridement with a favorable success rate.(3.) This article is protected by copyright. All rights reserved.
March 17, 2017: Clinical Otolaryngology
keyword
keyword
82965
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"