Results 21 to 30 of about 283,565 (299)

Research on DC leakage protection of communication base station in mining area

open access: yesMeikuang Anquan, 2022
In order to solve the problem that the high-voltage DC power supply system of the communication base station of the intelligent fire protection system in the open-pit coal mine area has the risk of personal electric shock when the insulation of any ...
ZHU Yannan   +3 more
doaj   +1 more source

Characteristics of grounding performance at Taman Bukit Perdana [PDF]

open access: yes, 2020
Grounding system is one of the important part during installation of power systems. The function of grounding system is to enable protection to the power system in case of any current leakage or lightning strike.
., Muhammad Saufi   +4 more
core  

Pitfall of the Detection Rate Optimized Bit Allocation within template protection and a remedy [PDF]

open access: yes, 2009
One of the requirements of a biometric template protection system is that the protected template ideally should not leak any information about the biometric sample or its derivatives. In the literature, several proposed template protection techniques are
Breebaart, J.   +4 more
core   +2 more sources

Identification and Analysis of Accident Scenarios in the Hospital Central Oxygen Unit by Fault Tree Analysis Method and Evaluation of the Adequacy of Control Devices Using Layer of Protection Analysis [PDF]

open access: yesMuhandisī-i bihdāsht-i ḥirfah/ī, 2020
Background and Objective: Central oxygen is one of the vital parts of hospitals responsible for supplying oxygen. Therefore, any defect in this system can result in human and financial losses. Therefore, effective risk analysis is of utmost importance in
Maryam Feiz Arefi   +3 more
doaj   +3 more sources

Status and prospect of microcomputer protection device for mine-used high-voltage explosion-proof switch

open access: yesGong-kuang zidonghua, 2018
Status of microcomputer protection device for mine-used high-voltage explosion-proof switch was introduced from aspects of hardware structure and basic functions.
LU Donggui, RONG Xiang, ZENG Ke
doaj   +1 more source

Intelligent electric control system design for mine horizontal directional drilling rig

open access: yesGong-kuang zidonghua, 2021
In order to solve the problems of low degree of intelligence, single function and poor safety of electric control system of domestic horizontal directional drilling rigs, an intelligent electric control system for mine horizontal directional drilling rig
LIU Zhu1   +4 more
doaj   +1 more source

Analytical model for determining the leakage albedo component for a direct cylindrical channel passing through the nuclear reactor protective layer [PDF]

open access: yesNuclear Energy and Technology, 2021
The task of determining the radiation situation, including neutron and gamma-quantum flux density, radiation spectrum, specific volumetric activity of radioactive gases in the air, etc. behind the protective composition having inhomogeneities, has always
Kirill S. Kupriyanov   +1 more
doaj   +3 more sources

Study on the Technology of Leakage Protection [PDF]

open access: yesThe Open Electrical & Electronic Engineering Journal, 2014
Failure leakage of equipment or electric shock may make the residual current amplitude decrease, which causes effective protection of the fault and the existence of dead zone of operation. This paper presents the principle of residual current leakage protection based on vector, using residual current amplitude and residual current variation of fault ...
Shen Zixing   +3 more
openaire   +1 more source

The protective performance of reusable cloth face masks, disposable procedure masks, KN95 masks and N95 respirators: Filtration and total inward leakage.

open access: yesPLoS ONE, 2021
Face coverings are a key component of preventive health measure strategies to mitigate the spread of respiratory illnesses. In this study five groups of masks were investigated that are of particular relevance to the SARS-CoV-2 pandemic: re-usable ...
Scott Duncan, Paul Bodurtha, Syed Naqvi
doaj   +1 more source

Recharge characteristics and protection of karst groundwater in major leakage area of Yufu river in Jinan

open access: yesCarsologica Sinica, 2023
Jinan, called as "the city of thousands of springs", is famous for its large number of springs. The saying "the seventy-two famous springs in Jinan top those elsewhere" reflects a profound spring culture with a long history.
Qinghua GUAN   +4 more
doaj   +1 more source

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