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Total 527 results found since Jan 2013.
Proposal and analysis of three closed double magnetic circuits to obtain a very long stroke for electrodynamic force generators
Publication date: 15 August 2017 Source:Sensors and Actuators A: Physical, Volume 263 Author(s): Junning Cui, Zhangqiang He, Jiubin Tan Electrodynamic force generators with a stroke of up to several hundred millimeters are in high demand in fields such as voice coil actuators and low frequency vibration metrology. The key is to extend the effective length of the long air gap (LAG) with required uniform magnetic flux density (MFD) and low magnetic flux leakage. This paper focuses on a proposal and comparative analysis of three closed double magnetic circuits (CDMCs) to obtain long/ultra-long strokes. Analyses are performed...
Source: Sensors and Actuators A: Physical - June 12, 2017 Category: Physics Source Type: research
Feasibility and Neurobehavioral Changes of 10-Day Simulated Microgravity in Acute Ischemic Stroke Patients.
CONCLUSIONS: The 6-degree HDT revealed no adverse effects on the cardiovascular system, showing nonsignificant increment in the finger-tapping test (representative of motor speed and performance) and nonsignificant reduction in the digit backward span test (representative of spatial memory).
PMID: 28604410 [PubMed - as supplied by publisher]
Source: Physica Medica - June 9, 2017 Category: Physics Authors: Koo KI, Park DK, Hwang CH Tags: Am J Phys Med Rehabil Source Type: research
A Low Voltage and Large Stroke Lorentz Force Continuous Deformable Polymer Mirror for Wavefront Control
Publication date: Available online 24 July 2018Source: Sensors and Actuators A: PhysicalAuthor(s): Byoungyoul Park, Elnaz Afsharipour, Dwayne Chrusch, Cyrus Shafai, David Andersen, Greg BurleyAbstractThis paper presents a low voltage, and large stroke Lorentz-force actuated continuous deformable polymer mirror for adaptive optics. A 5 × 5 actuator array clamped on the rigid mounting rail are formed from single crystal silicon flexible serpentine springs on either side of a rigid crossbar containing a narrow contact pillar. For the mirror, an epoxy-based SU-8 photoresist is used, which enables low voltage operation combine...
Source: Sensors and Actuators A: Physical - July 25, 2018 Category: Physics Source Type: research
Enhancing out-of-plane stroke in piezoelectrically driven micro-lens actuator with residual stress control
Publication date: Available online 16 October 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Ssu-Han Chen, Aron Michael, Chee Yee KwokAbstractThis paper presents the fabrication and characterization of a high performance piezoelectrically driven micro-lens actuator. The fabrication method involves controlling the residual stresses in the structure to predefine the initial deflection of the actuator, resulting in a larger actuation stroke. The residual stress control exploits the unique properties of ultra-high vacuum e-beam evaporated film to form thick tensile polysilicon as the actuator structural layer. This is...
Source: Sensors and Actuators A: Physical - October 17, 2019 Category: Physics Source Type: research
Effects of kinesthetic illusion induced by visual stimulation on the ankle joint for sit-to-stand in a hemiparesis stroke patient: ABA' single-case design
Conclusion] Kinesthetic illusion induced by visual stimulation for a hemiparesis stroke patient affected the ankle dorsiflexion function, resulting in an improved asymmetry during sit-to-stand as assessed by weight-bearing symmetry values.PMID:35035082 | PMC:PMC8752272 | DOI:10.1589/jpts.34.65
Source: Health Physics - January 17, 2022 Category: Physics Authors: Junpei Tanabe Kazu Amimoto Katsuya Sakai Shinpei Osaki Nao Yoshihiro Source Type: research
The effects of ankle-foot orthoses with plantar flexion stop and plantar flexion resistance using rocker-sole shoes on stroke gait: A randomized-controlled trial
CONCLUSION: According to the orthotic effect, an AFO-PlfR can create better function in the improvement of parameters related to the first rocker. Although a rocker shoe can facilitate rollover for weight progression in the third rocker of gait, it cannot make a strong push-off function in stroke survivors.PMID:35141485 | PMC:PMC8790265 | DOI:10.5606/tftrd.2021.6448
Source: Health Physics - February 10, 2022 Category: Physics Authors: Aliyeh Daryabor Gholamreza Aminian Mokhtar Arazpour Mina Baniasad Sumiko Yamamoto Source Type: research
Incidence risks for cerebrovascular diseases and types of stroke in a cohort of Mayak PA workers
Radiat Environ Biophys. 2022 Feb 19. doi: 10.1007/s00411-022-00966-6. Online ahead of print.ABSTRACTIncidence risks for cerebrovascular diseases (CeVD) and some types of stroke in a cohort of 22,377 Russian Mayak nuclear workers chronically exposed to ionising radiation and followed up until the end of 2018 are reported. Among total 9469 cases of CeVD, 2078 cases were strokes that included 262 hemorrhagic strokes (HS) and 1611 ischemic strokes (IS). Data evaluation was performed with categorical and dose-response analyses estimating the relative risk (RR) and excess relative risk (ERR) per unit cumulative liver absorbed do...
Source: Radiation and Environmental Biophysics - February 19, 2022 Category: Physics Authors: Tamara V Azizova Maria B Moseeva Evgeniya S Grigoryeva Nobuyuki Hamada Source Type: research
Effect of wearable exoskeleton on post-stroke gait: a systematic review and meta-analysis
CONCLUSIONS: Exoskeleton-assisted training was superior to dose-matched conventional gait training in several gait-related outcomes at the end of the intervention and follow-up in this systematic review and meta-analysis, which may support the use of exoskeleton-assisted training in the rehabilitation setting. Whether wearing versus not wearing a wearable exoskeleton is beneficial during walking remains unknown.PMID:35525427 | DOI:10.1016/j.rehab.2022.101674
Source: Health Physics - May 7, 2022 Category: Physics Authors: Ting-Hsuan Hsu Chi-Lin Tsai Ju-Yang Chi Chih-Yang Hsu Yen-Nung Lin Source Type: research
Post-stroke lateropulsion terminology: pushing for agreement among experts
Ann Phys Rehabil Med. 2022 Jun 3:101684. doi: 10.1016/j.rehab.2022.101684. Online ahead of print.ABSTRACTPost-stroke lateropulsion is prevalent. The global inconsistency in terminology used to describe the condition presents obstacles in accurately comparing research results, reaching consensus on use of measurement tools, agreeing upon a consistent approach to rehabilitation, and translating research to clinical practice. Commencing in 2021, 20 international experts undertook a Delphi Process that aimed to compile clinical practice recommendations for the rehabilitation of lateropulsion. As a part of the process, the pane...
Source: Health Physics - June 6, 2022 Category: Physics Authors: Jessica Nolan Angela Jacques Erin Godecke Hiroaki Abe Suzanne Babyar Jeannine Bergmann Melissa Birnbaum Shenhao Dai Cynthia Danells Taiza Gs Edwards Marialuisa Gandolfi Klaus Jahn Ryan Koter Avril Mansfield Junji Nakamura Vicky Pardo Dominic Perennou Celi Source Type: research
Immediate effect of different ankle-foot orthosis functions with the same dorsiflexed setting of initial ankle joint angle on walking ability in individuals with chronic stroke: a randomized crossover trial
Conclusion] In individuals with chronic stroke, ankle-foot orthosis function may be less important than the dorsiflexed setting of initial ankle joint angle in the ankle-foot orthosis.PMID:35784608 | PMC:PMC9246403 | DOI:10.1589/jpts.34.485
Source: Health Physics - July 5, 2022 Category: Physics Authors: Eri Nojiri Yoshitaka Wada Midori Mochizuki Mizuki Sugiyama Nobuyuki Kawate Source Type: research
