The article analyzes the existing protection of traction network, features its functioning in conditions double and built trains, an innovative transition to digital protection, first results trial operation, proposals for further improvement using monitoring increasing level automation network feeder control system. Electrified railway transport is important object internal logistics state, wh...

The development and protection of standardizable technology and related core knowledge has become major concerns of high-tech enterprises (HTEs) in nowadays dynamic standardization environment, thus HTEs need to ensure their R&D capability embraces effective processes for standards-setting, upgrading and displacement. This paper proposes a framework for R&D capability of HTEs within a dynamic s...

LEADING VLSl CHIP and digital system manufacturers report an increasing number of undetected temporary faults that cause permanent damage in general-purpose microprocessor-based systems.’ Clearly, modern VLSI circuits require higher reliability as traditional means of protection against temporaiy faults become insufficient. This need renewed interest in self-checking circuits for on-line error ...

The intracranial collateral channels apart from the circle of Willis have been studied angiographically in 34 patients with internal carotid artery occlusion and 19 with occlusion of the middle cerebral artery. These collaterals are present in a high percentage of cases within a week of the ictus and are more common when the stroke has developed slowly. Their presence in occlusion of the middle...

Introduction: Existing phantoms have been constructed based on Caucasian, non-Caucasian and race-specific datasets. According to previous studies made efforts to present Korean- specific phantoms and Chinese female phantom based on CVH dataset due to compare the resulting internal dosimetry with the Caucasian based data showed possible racial difference in human anatomy between ...

BACKGROUND AND PURPOSE Transfemoral carotid stenting, despite becoming very frequent, has some limitations such as difficult groin access in few patients, lack of distal protection during filter placement, or embolization despite protection. Transcervical stenting (TCS) is a novel technique during which a common carotid to jugular vein shunt is placed creating a protective reversal flow in the ...

Ductile iron replaced grey cast iron as pipe material in the early 1970s. It has been estimated that almost half of all new water mains in North America are ductile iron. The main cause of the structural deterioration of all metallic mains is external corrosion, which is induced by environmental and operational conditions. Internal corrosion, on the other hand, can cause significant functional ...

-A non-revivable Privacy Protection Circuit is proposed and designed in a low frequency passive Radio Frequency Identification (RFID) transponder. The main component of the non-revivable Privacy Protection Circuit is a poly fuse. The fuse acts as a switch and will be burn out when the function of transponder must be disabled. The broken fuse can not be repaired and prohibit the power required f...

Section 20.1204 of 10 CFR Part 20, "Standards for Protection Against Radiation," requires that each licensee, when required by 10 CFR 20.1502, take suitable and timely measurements of quantities of radionuclides in the body, quantities of radionuclides excreted from the body, concentrations of radioactive materials in the air in the work area, or any combination of such measurements as may be n...

In ships, materials of different electrochemical potentials the steel of the hull and the bronze of the propellers coexist. Once bathed in the sea water and electrically connected by the internal structures, phenomena of corrosion induced by galvanic coupling appear. These phenomena create currents in the water around the ship and induce, in the conducting sea water, a static electric field cal...