As shown previously, the electrical function of the brain is critically dependent on cerebral blood flow in the sense that reduction beyond an ischemic threshold of approximately 15 ml/100 gm per minute (approximately 35% of control) in the baboon leads to complete failure of the somatosensory evoked response. This study tests the hypothesis that electrical failure in ischemia may be directly a...

This study is about fault detection in siliconbased MEMS resonators. The main idea in finding out the failure is to establish a proper relationship between the mechanical structure and its electrical equivalent and prosecuting related measurements. In order to determine the type of defect, the electrical equivalent circuit is referenced considering the parasitic effects. Among various possible ...

Laminate structures composed of alternating thin layers of conductor and dielectric material are commonly used in energy storage and transmission components. The failure of the dielectric layers in regions of high field stress, with applied 60 Hz ac, de and impulse voltages, was studied. Several geometries were compared, including staggered and fiush edges. Electrical trees developed between th...

The size of electronic devices becomes smaller and smaller and the utilized components and materials are subjected to complex environments including high temperatures, electrical current, mechanical stresses, and others. We need to evaluate the performance of these small-scale materials that are used in such devices. We have shown that these small-scale materials may suffer structural degradati...

This paper develops a methodology for seismic vulnerability assessment of power transmission systems. The analysis is carried out from the perspective of system’s form (i.e., topological importance of elements) and system’s strength (i.e., probability of failure). The form combines the electrical properties of the network (e.g., electrical distance, power flow) with the systems approach via hie...

RF MEMS are commonly known as electrostatic devices using high electric field for their actuation. They can be exposed to transient voltages in any environment, and are very sensitive. According to this point of view, it is necessary to understand and analyze the degradations and failure criteria that can make them useless or reduce their lifetime. This paper deals with the investigation of ESD...

Even for electrical appliances, testing for illegal behaviors becomes difficult since the software system in an electrical appliance has already become large in size. Actually, the conventional method cannot generate sufficient test items for illegal behaviors. But testing illegal behaviors becomes more and more important, since the failure of electrical appliances would cause fatal effects on ...

Introduction A high-voltage (HV) electrical short circuit can be a critical electrical failure in an implantable cardioverter-defibrillator (ICD) system because of the failed delivery of appropriate shocks against fatal arrhythmia. The Food and Drug Administration has classified the St Jude Medical Riata family of ICD leads (St Jude Medical, St Paul, MN) as a class I recall since 2011 because o...

The mammalian brain constantly adapts to new experiences of the environment, and inhibitory circuits play a crucial role in this experience-dependent plasticity. A characteristic feature of inhibitory neurons is the establishment of electrical synapses, but the function of electrical coupling in plasticity is unclear. Here we show that elimination of electrical synapses formed by connexin36 alt...

Amniotic fluid embolism is a rare peripartum complication with the sudden onset of haemodynamic instability, respiratory failure and coagulopathy during labour or soon after delivery. A 31-year-old woman with amniotic fluid embolism was treated with vasopressors, inotropes, intravenous fluid, tranexamic acid and ventilatory support. Assessment of respiratory impairment was made using convention...