Results 271 to 280 of about 19,194,670 (349)

Parametric Study on Effect of Friction and Overbanding in Screening Current Stress of LBC Magnet

IEEE transactions on applied superconductivity, 2021
Magnetic stress is of particular concern for ultra high field magnets, especially, peak hoop stress of those magnets may be locally concentrated by the screening current stress (SCS).
Jeonghwan Park, J. Bang, U. Bong, Jaemin Kim, D. Abraimov, S. Hahn   +5 more
semanticscholar   +1 more source

Stress urinary incontinence: current understanding

British Journal of Hospital Medicine, 2005
Many new concepts were introduced in epidemiology, a etiopathology and treatment of stress urinary incontinence. This review gives a short account of these concepts and compares the results of commonly used treatment options with new ones recently introduced.
P, Patki, J, Woodhouse, J, Bycroft, R, Hamid, P J R, Shah   +4 more
openaire   +2 more sources

Stress induced leakage current under pulsed voltage stress

Solid-State Electronics, 2002
Abstract Stress induced leakage current (SILC) is one of the main problems in ultra-thin oxide MOS devices before the onset of soft or hard breakdown. This paper addresses the problem of SILC produced by dynamic stress. We have studied the behaviour of ultra-thin oxides subjected to pulsed voltage stress (PVS) and the results have been compared with ...
CESTER, ANDREA, A. PACCAGNELLA, G. GHIDINI   +2 more
openaire   +2 more sources

Optimal Simultaneous PWM Control for Three- Phase Dual-Active-Bridge Converters to Minimize Current Stress in the Whole Load Range

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021
In order to reduce the current stress and improve the efficiency of three-phase dual-active-bridge (3p-DAB) converters in the whole load range, in this article, a simplified derivation based on a segmented analytical method is proposed to obtain an ...
Jiahao Sun, Lin Qiu, Xing Liu, Jian Zhang, Jien Ma, Youtong Fang   +5 more
semanticscholar   +1 more source

Stress fractures: current concepts.

American Journal of Roentgenology, 1992
Stress fractures are extremely common lesions that occur in specific areas and are related to specific activities. They are caused by increased muscular activity on bones that are not yet ready to take the increased pull of the involved muscles. The insufficiency type of stress fractures found in patients with bone of diminished mineral content is ...
R H, Daffner, H, Pavlov
openaire   +2 more sources

Current-Stress Tensor Commutators

Journal of Mathematical Physics, 1971
The model independent components of current-stress tensor equal time commutators are derived for arbitrary spin 0 and 1 systems.
Stanley Deser, L. Kent Morrison
openaire   +1 more source

Investigation on Degradation of 1200-V Planar and Trench SiC MOSFET Under Surge Current Stress of Body Diode

IEEE Transactions on Electron Devices
When silicon carbide (SiC) metal–oxide–semiconductor field-effect transistors (MOSFETs) operate in the third quadrant, the surge current under extreme operating conditions hinders the body diode from replacing the external SiC Schottky barrier diode (SBD)
Xinbin Zhan, Yanjing He, Jiankun Lai, Hao Yuan, Qingwen Song, Xiaoyan Tang, Xiaowu Gong, Yuming Zhang   +7 more
semanticscholar   +1 more source

A Comprehensive Optimization Strategy of DAB Converter With Minimal Current Stress and Full Soft Switching in the Whole Operating Range

IEEE Journal of Emerging and Selected Topics in Power Electronics
Dual active bridge (DAB) converter has been widely used in electric vehicles (EVs) with the advantages of its simple structure and high performance. Traditional optimization strategies based on triple phase shift (TPS) of DAB cannot optimize both soft ...
Yao Zhang, Jiaxing Zong, Fan Zhang, Xinghao Li, Yuqi Wei, Hao Ma   +5 more
semanticscholar   +1 more source

Exercise Stress Testing Current Status

Cardiology, 1979
This paper is a review of the stress testing literature applying current methods of evaluation and analysis of exercise stress testing data to modern practice. Advantages and disadvantages of various methods for stress testing are discussed. Interpretation of the exercise stress test and an extensive discussion of 'false positive tests' as well as ...
openaire   +2 more sources

Optimal Control of Multilevel DAB Converters for Soft-Switching and Minimum Current Stress

IEEE transactions on power electronics
Multilevel dual-active-bridge (DAB) dc–dc converters offer higher voltage-blocking capability and larger step-up ratios, as well as increased number of degrees of freedom (DoFs) compared with the traditional two-level DAB converter.
Chaochao Song, A. Sangwongwanich, Yongheng Yang, F. Blaabjerg   +3 more
semanticscholar   +1 more source