Results 21 to 30 of about 1,045 (261)

Electromagnetic Sensors for Underwater Scour Monitoring

Sensors, 2020
Scour jeopardises the safety of many civil engineering structures with foundations in riverbeds and it is the leading cause for the collapse of bridges worldwide.
Andrea Maroni, Enrico Tubaldi, Neil Ferguson, Alessandro Tarantino, Hazel McDonald, Daniele Zonta   +5 more
doaj   +1 more source

Laboratory Experiments and Numerical Model of Scour at Upstream of a Slit Weir [PDF]

Journal of Applied Sciences and Nanotechnology, 2023
This study presents an experimental measurements and three-dimensional simulation of time-varying scour, along with the variables affecting the resulted scour hole dimensions and evolution at center and side weirs.
Ruaa Hamdan, Aqeel Al-Adili, Thamer Mohammed   +2 more
doaj   +1 more source

Investigation on local scour downstream of adverse st

Ain Shams Engineering Journal, 2014
This paper is focused on local scour downstream of adverse stilling basins where a submerged wall jet issued from a sluice gate. Experiments were conducted in a wide range of Froude numbers, grain sizes, tailwater depths, and stilling basin slopes.
Javad Farhoudi, Hossein Khalili Shayan
doaj   +1 more source

Characterization of the scour cavity evolution around a complex bridge pier [PDF]

Journal of Applied Water Engineering and Research, 2015
A study on the time development of local scour around a complex pier was developed using a small-scale model embedded in a sediment bed. A total of 15 laboratorial tests were performed at the Hydraulics Laboratory of the Faculty of Engineering of the University of Porto.
Pedro Ramos, Ana Bento, Rodrigo Maia, João Pedro Pêgo   +3 more
openaire   +2 more sources

Study of the time-dependent clear water scour around circular bridge piers

Journal of Hydrology and Hydromechanics, 2017
The local scour around bridge piers influences their stabilities and plays a key role in the bridge failures. The estimation of the maximum possible scour depth around bridge piers is an important step in the design of the bridge pier foundations.
Aksoy Aysegul Ozgenc, Bombar Gokcen, Arkis Tanıl, Guney Mehmet Sukru   +3 more
doaj   +1 more source

Clean Cut (adaptive, multimodal surgical infection prevention programme) for low‐resource settings: a prospective quality improvement study

BJS (British Journal of Surgery), EarlyView., 2020
Clean Cut is a multimodal, adaptive, checklist‐based infection prevention programme designed to improve compliance with six critical perioperative infection prevention practices. After introducing the programme at five hospitals in Ethiopia, compliance with critical infection prevention standards significantly improved and the relative risk of ...
J. A. Forrester, N. Starr, T. Negussie, D. Schaps, M. Adem, S. Alemu, D. Amenu, N. Gebeyehu, T. Habteyohannes, F. Jiru, A. Tesfaye, E. Wayessa, R. Chen, A. Trickey, S. Bitew, A. Bekele, T. G. Weiser   +16 more
wiley   +1 more source

Unresolved CFD and DEM Coupled Simulations on Scour around a Subsea Pipeline

Journal of Marine Science and Engineering, 2022
In this paper, numerical studies were carried out on scour around a subsea pipeline. A coupled solver between computational fluid dynamics (CFD) and discrete element method (DEM) was selected to simulate fluid flow and particle interactions.
Seongjin Song, Sunho Park
doaj   +1 more source

Laboratory Evaluation of Time-Domain Reflectometry for Bridge Scour Measurement: Comparison with the Ultrasonic Method

Advances in Civil Engineering, 2010
Bridge scour is a major factor causing instability of bridges crossing waterways. Excessive scour contributes to their high construction and maintenance costs.
Xinbao Yu, Xiong Yu
doaj   +1 more source

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

Advanced Functional Materials, EarlyView.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao, Dongfang Lv, Chang Liu, Changxu Wu, Yifei Liu, Caili Dai, Huazhou Li   +6 more
wiley   +1 more source

Scour near low-crested breakwaters: review and technical challenges

Applied Ocean Research
Low-crested breakwaters are widely used structures for coastal protection, but they are vulnerable to scouring caused by wave and current action. This paper analyses information from available mobile bed physical models, the progress made in recent years
Francisco Pinto, Paulo Rosa-Santos, Javier L. Lara, Victor Ramos   +3 more
doaj   +1 more source