Results 11 to 20 of about 777,248 (218)

Influence of Ru on structure and corrosion behavior of passive film on Ti-6Al-4V alloy in oil and gas exploration conditions

Scientific Reports, 2022
In order to investigate the influence of minor Ru on the electrochemical behaviour and structural characteristics of passive films on the surface of Ti-6Al-4V alloys under various oil and gas exploration conditions, electrochemical techniques, X-ray ...
Qiang Liu, Hongtao Liu, Junfeng Xie, Wei-fu Zhang, Yi-ming Zhang, Chun Feng, Guang-shan Li, Yang Yu, Sheng-yin Song, Cheng-xian Yin   +9 more
doaj   +1 more source

Control of Welding Residual Stress in Large Storage Tank by Finite Element Method

Metals, 2022
T-joint welding is a key manufacturing process of large storage tanks. However, complex residual stresses are generated and have a great effect on the structural integrity of storage tanks. The high residual stress caused by welding and the discontinuous
Gang Wu, Jinheng Luo, Lifeng Li, Yan Long, Shuxin Zhang, Yujie Wang, Yao Zhang, Shuyi Xie   +7 more
doaj   +1 more source

Calculation model and experimental study of the collapse strength of titanium alloy tubing and casing

Scientific Reports, 2022
Titanium alloy has become a promising candidate material for oil country tubular goods (OCTGs) in harsh service environments owing to its high specific strength, low density, low elastic modulus, excellent toughness, excellent anti-fatigue and corrosion ...
Qiang Liu, Ning Li, Zhao-xi Shen, Mi-feng Zhao, Jun-feng Xie, Guo-chuan Zhu, Xin Xu, Cheng-xian Yin   +7 more
doaj   +1 more source

Microleakage locating algorithm of gas gathering pipeline based on whitening filter

You-qi chuyun, 2022
The extraction and identification of microleakage signal caused by the corrosion of gathering pipelines in the oil and gas fields is a great technical challenge for leakage monitoring.
Gang WU, Min ZHAO, Xin ZHENG, Rui CAI, Chengli SONG, Lifeng LI, Shouyu SUN   +6 more
doaj   +1 more source

What Matters in the Effectiveness of Airborne Collision Avoidance Systems? Monte Carlo Simulation of Uncertainties for TCAS II and ACAS Xa

Aerospace, 2023
TCAS II is a rule-based airborne collision avoidance system (ACAS) that is used in current commercial air transport operations, and ACAS Xa is a new optimization-based system.
Sybert Stroeve
doaj   +1 more source

The Role of Psychological Capital and Work Engagement in Enhancing Construction Workers' Safety Behavior

Frontiers in Public Health, 2022
ObjectivesConstruction is one of the unsafe industrial sectors, causing a considerable amount of harm to its workforce and organizations globally. Only a handful of research evidence has been found evaluating individuals' cognitive and engagement-related
Muhammad Shoaib Saleem, Ahmad Shahrul Nizam Isha, Yuzana Mohd Yusop, Maheen Iqbal Awan, Gehad Mohammed Ahmed Naji   +4 more
doaj   +1 more source

Hot deformation characteristics and kinetics analysis for Ni‐based corrosion resistant alloy

Engineering Reports, 2021
The hot deformation characteristics of Nickel‐based corrosion resistant alloy was studied in the temperature range of 1050°C to 1200°C and the strain rate range of 0.001 to 0.1 second−1 by employing hot compression tests.
Lei Wang, Feng Liu, Hongyuan Chen, Qiang Chi   +3 more
doaj   +1 more source

A Comparative Study of Machine Learning and Deep Learning Models for Real-Time UAV Positioning Error Estimation

Drones
Accurate real-time positioning of Unmanned Aerial Vehicles (UAVs) is critical for navigation and mapping but remains challenging in complex environments due to signal blockages and multipath effects.
Mei Yang, Hua Zhuo, Jun-Gang Ma, Guo-Hui Niu, Zulmira Mamtimin, Mei Tao, Ya-Qiong Zhu, Jun Li, Murat Abdughani, Aihemaitijiang Sidike   +9 more
doaj   +1 more source

Development and testing of the situational judgement test to measure safety performance of healthcare professionals: An explorative cross‐sectional study

Nursing Open, 2022
Aim To measure safety performance, situational judgement test, which is a method composed of job‐related situations, can be used. This study aimed to develop and test its psychometric properties by measuring the safety performance of healthcare ...
Lina Heier, Nikoloz Gambashidze, Judith Hammerschmidt, Donia Riouchi, Franziska Geiser, Nicole Ernstmann   +5 more
doaj   +1 more source

Detection and Precision Application Path Planning for Cotton Spider Mite Based on UAV Multispectral Remote Sensing

Agriculture
Cotton spider mites pose a significant threat to cotton production, while traditional manual investigation and blanket pesticide application are inefficient for precision pest management in large-scale cotton fields. To address this challenge, this study
Hua Zhuo, Mei Yang, Bei Wu, Yuqin Xiao, Jungang Ma, Yanhong Chen, Manxian Yang, Yuqing Li, Yikun Zhao, Pengfei Shi   +9 more
doaj   +1 more source