Results 251 to 260 of about 3,825,314 (291)

Current Status of Esophageal Protection

Cardiac Electrophysiology Clinics, 2020
Catheter ablation of atrial fibrillation necessitates ablation on the posterior left atrium. The anterior esophagus touches the posterior left atrium, although its course is highly variable. The proximity of the left atrium to the esophagus confers risk of injury with radiofrequency and cryoablation owing to the heat transfer that occurs with thermal ...
Rahul, Bhardwaj, Jacob S, Koruth, Vivek Y, Reddy   +2 more
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Current Concepts in Cerebral Protection

Chest, 1993
In the past, physicians viewed ischemic injury as an irreversible event. Modern science has shown that this view is incorrect and that ischemic neuronal damage is an ongoing, active process that might be amenable to various therapies. Figure 2 illustrates some of the possible sites where these therapies might be active.
B J, Kelly, J M, Luce
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Protective Current Transformers

Nature, 1956
Protective Current Transformers and Circuits By P. Mathews. (Advanced Engineering Textbooks.) Pp. xv + 253 + 4 plates. (London: Chapman and Hall, Ltd., 1955.) 36s. net.
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Airway protective mechanisms: Current concepts

Dysphagia, 1995
There are at least eight mechanisms identified that result either in volume clearance of the pharynx and esophagus (secondary peristalsis and pharyngeal swallow) or prevent entry of the gastric content into the esophagus and pharynx (LES and UES), accentuate these barriers (esophago-UES and pharyngo-UES contractile reflexes), or induce closure of the ...
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Surge Currents in Protective Devices

Transactions of the American Institute of Electrical Engineers, 1935
Lightning arresters are expected to protect equipment against damage and outage from lightning, and to have an economical life. In order to accomplish these ends effectively, arresters should be able to discharge all surge currents whose probability of occurrence is such that the average life of the arresters will be in an economic balance with their ...
openaire   +1 more source

Adaptive current differential protection schemes for transmission-line protection

IEEE PES General Meeting, 2009
Throughout the history of power system protection, researchers have strived to increase sensitivity and speed of apparatus protection systems without compromising security. With the significant technological advances in wide-area measurement systems, for transmission system protection, current differential protection scheme outscores alternatives like ...
DAMBHARE, S, SOMAN, SA, CHANDORKAR, MC
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Current-differential protective schemes

1993
It will be clear from the previous chapter that overcurrent and earth fault protective equipment employing time grading and directional detection cannot provide correct discrimination on all power networks and in many instances the clearance times for some faults would not be acceptable.
C. Christopoulos, A. Wright
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Charging Current Compensation for Distance Protection

IEEE Transactions on Power Delivery, 2005
When a distance relay is applied to a long transmission line, the capacitance of the transmission line causes oscillation of the distance measurement, although the exact nature of the phenomenon has never been clearly defined. Our research has shown that the degree of oscillation can be reduced significantly by introducing charging current to the ...
T. Kase, Y. Kurosawa, H. Amo
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Current Protection Against CWAs

2017
Immediately after the first vast scale deployment of CWAs in battlefields, the development of protection medias for the soldiers, and predominantly gas mask, became an important research target.
Dimitrios A. Giannakoudakis, Teresa J. Bandosz   +1 more
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