Results 261 to 270 of about 929,929 (317)

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 ...
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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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Background and current data protection legislation

Archives of disease in childhood - Education & practice edition, 2020
In May 2018, the European Union (EU) General Data Protection Regulation (GDPR) became EU-wide law. The regulation does allow for individual countries to make their own interpretations in certain areas. In the UK, GDPR has been supplemented by enacting the Data Protection Act (DPA) 2018 to provide additional detail. It is now over a year since this has
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Brain protection: Current and future options

Best Practice & Research Clinical Anaesthesiology, 2008
The ability to reduce brain injury before, during or after an ischaemic injury, irrespective of the cause, remains an exciting prospect. In this article, we will discuss some of the current research behind cerebral protection, which will include the use of anaesthetic agents, as well as therapies targeted specifically at the complex cascades following ...
Jane, Sturgess, Basil, Matta
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Current-only Directional Overcurrent Protection Using Postfault Current

2019 IEEE Texas Power and Energy Conference (TPEC), 2019
Directional overcurrent relays play an important role in protecting the transmission and distribution systems. Conventionally, voltage profile is utilized as a polarizing reference quantity for the directional protection. During the close-in-faults, the conventional relaying technique loses its voltage reference signal.
Iman Kiaei, Saeed Lotfifard, Mohammad Ghanaatian   +2 more
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Current corrosion protection problems

Materials & Design, 1983
Abstract Corrosion is the reaction of a material with its environment, and it may lead to a measurable change in the material and to corrosion damage. In the industrial countries, losses due to corrosion amount to about 4% of gross national product.
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