Results 21 to 30 of about 204,714 (304)

Internet of Things Intrinsic Safety Rescue Watch Based on Fast Networking and Detectability

, 2020
A kind of Internet of things intrinsic safety rescue watch with fast networking and detection is designed. Taking NRF52832 as the control core, Bluetooth 5.0 and mesh networking technology are used to realize fast networking of mesh network after ...
SUN Xiaodong
core   +1 more source

Sensitivity analysis of IEC spark test apparatus

Meikuang Anquan, 2021
The sensitivity of spark test apparatus is affected by environmental factors, tungsten wire electrode and cadmium disk electrode. In this paper, the intersection / separation trajectories of tungsten wire electrode and cadmium disk electrode in a test ...
ZHANG Yong
doaj   +1 more source

Investigation of Laser-Welded EH40 Steel Joint Stress with Different Thicknesses Based on a New Heat Source Model

Metals
High-strength steel (HSS) plates are widely used due to their superior performance. However, residual stresses generated during welding can exacerbate the initiation of fatigue cracks, and the accurate prediction of residual stresses is crucial ...
Ruolin Wu, Xingyu Wu, Shuai Hu, Chaomei He, Huanhuan Li, Yuan Liu   +5 more
doaj   +1 more source

System Safety in Organizational Safety Decision Making

, 2016
The two cardinal aspects of safety are intrinsic safety and its demonstration. A key element of demonstrating system safety is the organizational structure that is best placed to ensure and demonstrate that high standards of safety are clearly in place ...
Jones, Malcolm
core   +1 more source

Heat Transfer Enhancement and Flow Resistance Characteristics in a Tube with Alternating Corrugated-Smooth Segments

Inventions
To mitigate the inherent high flow resistance of conventional corrugated tubes, a novel design with alternating clockwise/counterclockwise corrugated segments separated by smooth sections is proposed.
Junwen Cheng, Jiahao Zhu, Xin Wen, Haodong Yu, Wei Lin, Zuqiang Xin, Jiuyang Yu   +6 more
doaj   +1 more source

Hardware design of Foundation Fieldbus intrinsic safety communication protocol processing unit

, 2006
In this paper, the key technology of hardware design on the communication protocol processing unit is given from the views of the system function, resource requirement, power consumption limit, signal transmission, processing speed and power supply mode ...
Wang Hong, Wang Ying, Cui Shu-ping, Cui SP(崔书平), Wang Y(汪滢), Wang H(王宏)   +5 more
core   +1 more source

Development and application of inline inspectors in low-pressure gas pipelines with small curvature radii

You-qi chuyun, 2023
A specialized inline magnetic leakage inspector has been developed for low-pressure natural gas gathering and transmission pipelines with small curvature radii in oilfields.
LIANG Shoucai, SUN Hao, SUN Chao, MA Yan, LIU Wanqiang   +4 more
doaj   +1 more source

The Influence Mechanism of Deformation on the Precipitation Behavior and Mechanical Properties of 7075 Aluminum Alloy During Hot Forming-Quenching Integrated Process

Metals
The hot forming-quenching integrated process (HFQ®) organically combines the deformation and heat treatment, which can improve the forming performance of aluminum alloy while ensuring the final strength of formed parts.
Huanhuan Li, Xinhang Zhang, Wei Dai, Wei Yan, Chaomei He, Jiake Luo, Mengxing Li, Ruolin Wu, Dang Wang   +8 more
doaj   +1 more source

A roadmap for the future of crowd safety research and practice: Introducing the Swiss Cheese Model of Crowd Safety and the imperative of a Vision Zero target

, 2023
Crowds can be subject to intrinsic and extrinsic sources of risk, and previous records have shown that, in the absence of adequate safety measures, these sources of risk can jeopardise human lives.
Feliciani C, Webster J, Lovreglio R, O'Toole WJ, Schaap S, Geoerg P, Tatrai A, Wilson A, Miles Z, Hocaoglu N, Dierickx A, van Gelder R, Spaaij R, Haghani M, Crabb B, Coughlan M, Laws S, Semmens T, Shahhoseini Z, Nicolas A   +19 more
core   +1 more source

Property Changes of Chopped Glass Fiber-Reinforced Sheet Molding Compound Composite in Acid-Base Environment

International Journal of Polymer Science
To investigate the influence of acid-base environments on the properties of chopped fiber-reinforced resin matrix composites, corresponding unsealed specimens were prepared.
Qi Chen, Yazhong Xia, Jiuyang Yu, Tianyi Zhang, Bowen Liu, Yaonan Dai   +5 more
doaj   +1 more source