Results 41 to 50 of about 5,141,889 (70)

Water pipe smoking among public versus private university students in Ankara, Turkey: an online survey

BMC Public Health, 2022
Background Water pipe smoking has become a global public health problem as its popularity increased over time, especially among youth. The objective of our study was to estimate water pipe tobacco smoking prevalence and to assess socioeconomic factors ...
Asena Caner, Hilal Özcebe
doaj   +1 more source

Time‐Domain Factorized Wave Model and Iterative Beamforming for Localizing Multiple Leaks in Water Pipes

Water Resources Research
Time‐domain full‐waveform inversion is a robust method for localizing leaks in urban water distribution pipes. However, its built‐in classical wave model suffers from coupled and interdependent leak parameters; thus, the localization of multiple leaks ...
Manli Wang, Huan‐Feng Duan, Qiuru Chen, Mostafa Rahmanshahi, Tong‐Chuan Che   +4 more
doaj   +1 more source

Effect of Compressed Gas on Deep Mine Long-Distance Backfill Pipe Flushing: From Laboratory to Industrial Tests

Advances in Civil Engineering
The clean filling pipe can ensure sufficient overflow section, reduce paste transport resistance, and avoid slurry deposition. The introduction of compressed gas into the pipe flushing can improve the flushing effect and efficiency of the pipe and reduce
Longjian Bai, Hongjiang Wang, Aixiang Wu, Hao Li, Shengkai Wang, Chong Chen, Chunkang Liu   +6 more
doaj   +1 more source

Numerical simulation on thermal deformation of water-cooling pipe for radiation screen in radiant syngas cooler

Meitan xuebao
Coal gasification technology is an effective way to the clean and efficient utilization of coal, the entrained-flow gasification process with radiant syngas cooler (RSC) can effectively recover the sensible heat from high temperature syngas and improve ...
Guoyu ZHANG, Jianliang XU, Yan GONG, Qinghua GUO, Guangsuo YU   +4 more
doaj   +1 more source

Fluid flow and heat transfer in a dual-wet micro heat pipe [PDF]

, 2007
Micro heat pipes have been used to cool micro electronic devices, but their heat transfer coefficients are low compared with those of conventional heat pipes. In this work, a dual-wet pipe is proposed as a model to study heat transfer in micro heat pipes.
Watson, S.J., Wong, H., Zhang, J.
core   +1 more source

Internal pipe corrosion assessment method in water distribution system using ultrasound and convolutional neural networks

npj Clean Water
Internal pipe corrosion within water distribution systems leads to iron oxide deposits on pipe walls, potentially contaminating the water supply. Consuming iron oxide-contaminated water can cause significant health issues such as gastrointestinal ...
Yeongho Sung, Hyeon-Ju Jeon, Daehun Kim, Min-Seo Kim, Jaeyeop Choi, Hwan Ryul Jo, Junghwan Oh, O-Joun Lee, Hae Gyun Lim   +8 more
doaj   +1 more source

Hybrid Machine Learning Meta-Model for the Condition Assessment of Urban Underground Pipes

Infrastructures
Urban water infrastructure faces increasing deterioration, necessitating accurate, cost-effective condition assessment. Traditional inspection techniques are intrusive and inefficient, creating demand for scalable machine learning (ML) solutions.
Mohsen Mohammadagha, Mohammad Najafi, Vinayak Kaushal, Ahmad Jibreen   +3 more
doaj   +1 more source

Research on the Slurry for Long-Distance Large-Diameter Pipe Jacking in Expansive Soil

Advances in Civil Engineering, 2018
When the pipe jacking technology is applied in expansive formation, the soil around the pipe will easily absorb water from the slurry and expand to wrap up the pipe, producing an excessive pipe jacking force.
Xian Yang, Yang Liu, Chao Yang
doaj   +1 more source

Technology Research of Sewage Pipe Network on Initial Rain Water Receiving Capacity

MATEC Web of Conferences, 2018
Taking a certain area of a coastal city as the research object, based on the measured data, the model of rainwater pipe network and the hydraulic model of sewage pipe network in the study area were established based on SWMM.
Liang Fengchao, Lv Mou, Miao Xiaobo, Song Jie   +3 more
doaj   +1 more source

Hydraulic Balance Adjustment Analysis and Optimization Method of Farmland Water Conservancy Pipe Network

Chemical Engineering Transactions, 2018
The hydraulic balance of farmland water conservancy pipe network is a common problem in the current large-scale farmland irrigation system. It is of great practical significance to study the different types of unsteady flow hydraulic calculations in ...
Peng Cheng
doaj   +1 more source