نتایج جستجو برای: electrical failure
تعداد نتایج: 560450 فیلتر نتایج به سال:
Failure precursors indicate changes in a measured variable that can be associated with impending failure. By identifying precursors to failure and by monitoring them, system failures can be predicted and actions can be taken to mitigate their effects. In this study, three potential failure precursor candidates, threshold voltage, transconductance, and collector-emitter ON voltage, are evaluated...
Manyof the lllechanismsthat lead to the ultimate failure of an integrated circuit maybe evident early in the life of a device and should be detectable if sufficiently precise electrical llleasurements are made. A variety of tests have been I114deon mediumscale CMOScircuits to evaluate this hypothesis. These have included leakage current, transient current, electrical noise, upper cut off freque...
Electrical failure during cardiopulmonary bypass is a crisis situation for the cardiac surgical team. Fortunately, it has a low incidence with low morbidity and mortality rates. Notwithstanding, institutional preventative and management measures should be taken. Here, we report a case of electrical failure during cardiopulmonary bypass, which was successfully managed during the surgery, allowin...
edical and electrical therapies for systolic heart failure have improved patients’ outcome and the altered natural history of the disease. Although heart transplantation remains the most successful treatment option for patients with advanced heart failure refractory in terms of medical and electrical treatments, cardiac transplantation is available for only a minority of patients because of a l...
In this paper, for the first time Transmission Line Model (TLM) characterization is used to analyze ESD events in amorphous silicon thin film transistors (a-Si:H TFT). It will be ,shown that, above an ESD degradation threshold voltage, deterioration of electrical characteristics sets in, and that above another ESD failure threshold voltage, dielectric breakdown occurs. Electrical simulations of...
As U.S. power grid transforms itself into Smart Grid, it has become less reliable in the past years. Power grid failures lead to huge financial cost and affect people’s life. Using a statistical analysis and holistic approach, this paper analyzes the New York City power grid failures: failure patterns and climatic effects. Our findings include: higher peak electrical load increases likelihood o...
Abstract The stability and lifetime of electrical contact pose a major challenge to the performance microelectro-mechanical systems (MEMS), such as MEMS switches. microscopic failure mechanism still remains largely unclear. Here conductive atomic force microscopy with hot switching mode was adopted simulate asperity-level condition in switch. Strong variation fluctuation current adhesion were o...
A report of a 13-year-old female with respiratory distress following an electrical shock at home and the management undertaken hospital in Yei; including implications for South Sudan.
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