Results 1 to 10 of about 40,523 (120)
Investigation on the Physical Properties of Varistors According to Temperature
IEEE Access, 2022 This study aims to determine the basic physical properties of varistor, which is a protective element in a surge protection device (SPD) used to prevent damage to electric and electronic equipment due to lightning.
Ahran Min, Sin-Dong Kang, Jae-Ho Kim
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Applied Sciences, 2022 In this study, the mechanical properties of normal concrete (NC) and lightweight concrete (LC) were measured upon exposure to high temperatures (20, 100, 200, 300, 500, and 700 °C).
Wonchang Kim +3 more
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Insulation Resistance and Tracking Index of Circuit Breaker According to the Accelerated Aging Test
IEEE Access, 2023 This study examined insulation resistance and tracking index characteristics through the accelerated aging test of low-voltage circuit breakers. The leakage current was found to be influenced by external factors rather than the internal structure ...
Sin-Dong Kang, Jae-Ho Kim
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Applied Sciences, 2021 The effects of changes in irradiance level (external heat flux), exhaust flow rate, and hood height on CO and soot yield were examined using a cone calorimeter.
Sun-Yeo Mun +2 more
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Improving Functional Exercises Based on Experts’ Evaluation Weights for Emergency Responses
Safety, 2023 Social and economic changes in Southeast Asia have caused significant changes to Vietnam’s national emergency management structure, including expanding the role of firefighters from firefighting to rescue activities in various situations. It is essential
Hung Le Tien, Nam Pham Van, Takaaki Kato
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Frontiers in Earth Science, 2023 The continuous development of coal science and technology has made gas and coal dust explosion disasters an important factor that restricts efficient and intelligent coal mining, which seriously threatens the safe production process of coal mines.
Yihui Niu +6 more
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Compilation principle and key points interpretation of Coal Mine Fire Prevention and Control Rules
Meikuang Anquan, 2022 Coal Mine Fire Prevention and Control Rules is the first comprehensive normative document on coal mine fire prevention and control in China, which requires that coal mine fire prevention and control work should follow the principle of “prevention first ...
LIANG Yuntao +4 more
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OPTIMAL DISTANCE BETWEEN EVACUATION CROSS PASSAGES IN RAILWAY TUNNELS [PDF]
Актуальные вопросы пожарной безопасностиThis article provides a concise analysis of regulatory documents concerning fire protection for the underground infrastructure of railway tunnels. Special attention is paid to the distance between evacuation cross passages, which is a critical factor for
Vladimir A. Polyakov +1 more
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Flexural Strength and Stiffness of Donut-Type Voided Slab
Applied Sciences, 2022 The voided slab system has been known as an effective technique to replace a heavy reinforced concrete slab system without the decrease in flexural strength.
Joo-Hong Chung +2 more
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Bond Characteristics of a Deformed Steel Bar Embedded in Donut-Type Voided Slab
Applied Sciences, 2022 In reinforced concrete (RC) structures, bond behavior between concrete and deformed steel bar (rebar) has a great effect on the structural behavior of members including voided slabs.
Joo-Hong Chung +2 more
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