Results 1 to 10 of about 727 (249)
International Journal of Physiotherapy, 2018 Background: Sprained ankle a common orthopedic injury. The standard treatment for ankle sprains remains nonoperative. Ankle taping was used to protect and prevent ligaments excessive strain.
Asmaa F Abdelmonem +2 more
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Eccentric Peak Torque Analysis of Subjects Suffering from Chronic Ankle Instability
Medicine Science, 2013 The purpose of this study was to examine the effect of chronic ankle instability (CAI) on eccentric peak torque of the ankle musculature. The study included fifty participants divided into two groups; the first group consisted of twenty five subjects ...
Amr Almaz Abdel-aziem, Amira Hussin Draz
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IET Electric Power Applications, 2021 In normal operation mode, sensorless speed‐controlled motor drives should be more reliable, less expensive and less bulky than their counterparts with a speed sensor.
Rebah Maamouri +3 more
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Missouri Journal of Mathematical Sciences, 1996 Specializing an invertor [20] to a linear transformation on $M_n$ for which the image of any hermitian matrix is skew-hermitian yields a hermitian-invertor. This paper gives twelve characterizations of hermitian-invertors and lists other basic results for them. It gives a set of unifying results in a reflector setting and concludes with some remarks on
Hill, Richard D., Siler, Joseph R.
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Topology review of doubly grounded transformer‐less single‐phase inverters
IET Power Electronics, 2023 Photovoltaic (PV) transformer‐less single‐phase inverters are widely used in the solar generation systems because of low cost, high power density, and high efficiency.
Zhilei Yao
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Improved plug–play SV with virtual inertia for enhancing the stability of high RES-penetrated grids
IET Smart Grid, 2019 The synchronverter (SV) is currently one of the most promising grid-friendly inverters that mimic synchronous generators (SGs). Almost all the available SV use virtual current signal for synchronization, which require a complicated controller that lacks ...
Mahmoud Awad Elshenawy +4 more
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Van der Waals negative capacitance transistors
Nature Communications, 2019 The adaptation to atomically thin 2D semiconductors and van der Waals layered ferroelectrics can enable negative capacitance transistors with superior performance and bendability.
Xiaowei Wang +14 more
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The Journal of Engineering, 2019 To ease the heavy burden of inverter control, including line current regulation, harmonic current suppression, filter resonance suppression, grid distortion suppression, phase locked loop etc., the study proposes a master–slave current regulation method ...
Yuanbin He +4 more
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The Journal of Engineering, 2019 This paper proposes an additional reactive power control strategy and an emergency control strategy for ±1100 kV ultra-high voltage direct current (UHVDC) system with a hierarchical connection mode, in which the inverter station connect to two AC systems
Yongxin Xiong, Wei Yao, Jinyu Wen
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Electronics Letters, 1967 A modification of the conventional tunnel-diode monostable circuit which gives an output signal of reversed polarity with respect to the polarity of the input is described. The circuit is simple and reliable and employs one tunnel diode only.
G. Manuzio, L. Racca
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