Results 51 to 60 of about 2,221 (251)

Effect of trapezoidal collars as a scour countermeasure around wing-wall abutments

Water Science and Engineering, 2018
Local scour around bridge abutments is a widespread problem that can result in structural failure. Collars can be used as a countermeasure to reduce the scour depth.
Payam Khosravinia, Amir Malekpour, Ali Hosseinzadehdalir, Davod Farsadizadeh   +3 more
doaj   +1 more source

Experimental and smoothed particle hydrodynamics‐finite element method simulation investigation of synergistic erosion mechanism of gangue‐based abrasive water jets

Deep Underground Science and Engineering, EarlyView.
This study proposes an eco‐friendly coal permeability enhancement technique by utilizing mine waste gangue as an abrasive in high‐pressure water jets. Integrating erosion experiments with smoothed particle hydrodynamics‐finite element method coupled simulations, the research study elucidates the flow field dynamics and a nonlinear solid–liquid ...
Qingxiang Wang, Jiaxu Tang, Qiheng Ren, Ding Wang, Tong Wang   +4 more
wiley   +1 more source

Study on Maximum Scouring Depth of Gravel Channels

Procedia Engineering, 2012
AbstractThe local scour depth is a key parameter in the design of levee engineering. Based on experiment data, a non-dimensional analysis for the prediction of local scour depth is related to the approach flow velocity, flow depth, flow angle, scope of levee and the particle size of the bed sediment.
Xia, Li, Ji, Hou
openaire   +1 more source

Clinical outcomes of a novel flowable calcium silicate cement in equine endodontic treatment

Equine Veterinary Journal, EarlyView.
Abstract Background Orthograde endodontic treatment of equine cheek teeth is performed infrequently with variable success rates of obturation with calcium hydroxide paste (CHP). A novel flowable calcium silicate cement (eCSC) formulated for use as an obturation material in equine teeth has demonstrated acceptable canal filling volumes and evidence of ...
Kirsten Jackson, Josephine Faulkner, Carsten Staszyk, William Ha, Ebony Quintrell, Erin Kelty   +5 more
wiley   +1 more source

Bryozoan‐Rich Carbonate Units of the Erfoud Area (SE Morocco) Record Latest Katian to Early Hirnantian Interglacial Intervals

Geological Journal, EarlyView.
In this study, we re‐examine the depositional architecture of the Erfoud limestone in Morocco. Introducing new biostratigraphic constraints from chitinozoan assemblages, we show that Katian to Hirnantian bryozoan‐pelmatozoan meadows reflect flooding events linked to a series of interglacial transgressions known to have occurred immediately prior to the
Philippe Razin, Jean‐François Ghienne, Amira Meddour, Lorena Tessitore, Thijs R. A. Vandenbroucke   +4 more
wiley   +1 more source

Scour Depth Around Cylinders Under Combined Effects of River Flow and Tidal Currents

Journal of Marine Science and Engineering
The safety of coastal structures is a growing global concern due to the combined effects of strong tides and river flow. In this study, the local scour around cylinders under the influence of tides combined with river flows was investigated numerically ...
Yuezhang Xia, Jiahao Liu, Shiyu Yang, Shaohua Wang, Li Li   +4 more
doaj   +1 more source

Effect of Bridge Pier Shape on Depth of Scour

IOP Conference Series: Materials Science and Engineering, 2020
Abstract Scour at bridge piers is a common problem in infrastructure engineering, as local scour around bridge piers is one of the most common causes of bridge failure. Prediction of the maximum depth of local scour thus plays an important role in ensuring safety and economy during design and maintenance.
Halah Kais Jalal, Waqed H. Hassan
openaire   +1 more source

Clinicians' and patients' perspectives of a mobility technician role in the hospital to promote ambulation: A qualitative study

Journal of Hospital Medicine, EarlyView.
Abstract Background Hospitalized older patients are predominantly sedentary, risking functional decline. Nurses and physical therapists are primarily responsible for mobility but have many competing demands. Objectives To explore clinicians' and patients' perceptions of mobility technicians dedicated to support inpatient ambulation.
Jordan M. Alpert, Anya Patel, Jacqueline Fox, Holly Renner, Joshua K. Johnson, Quinn R. Pack, Robert J. Fox, Christian N. Burchill, Lee Anne Siegmund, Mary Stilphen, Peter K. Lindenauer, Michael B. Rothberg   +11 more
wiley   +1 more source

Experimental and numerical investigation of the effect of different shapes of collars on the reduction of scour around a single bridge pier. [PDF]

PLoS ONE, 2014
The scour phenomenon around bridge piers causes great quantities of damages annually all over the world. Collars are considered as one of the substantial methods for reducing the depth and volume of scour around bridge piers.
Afshin Jahangirzadeh, Hossein Basser, Shatirah Akib, Hojat Karami, Sareh Naji, Shahaboddin Shamshirband   +5 more
doaj   +1 more source

Effect of Scour on the Natural Frequency Responses of Bridge Piers: Development of a Scour Depth Sensor [PDF]

Infrastructures, 2019
Local scour is the removal of soil around bridge foundations under the erosive action of flowing water. This hydraulic risk has raised awareness of the need for developing continuous monitoring techniques to estimate scour depth around bridge piers and abutments.
Nissrine Boujia, Franziska Schmidt, Christophe Chevalier, Dominique Siegert, Damien Pham van Bang   +4 more
openaire   +4 more sources