Results 61 to 70 of about 35,344 (313)

The Effects of Permeable, Impermeable and Bandal-like Spur-dike Angel On Geometric Dimensions of Scouring In Submerged Conditions [PDF]

علوم و مهندسی آبیاری, 2017
The purpose of this study is to compare the scouring hole geometric dimensions for three kinds of spur-dike: permeable, impermeable and bandal-like for submerged conditions by conducting a set of experimental tests.
Fatemeh Jarah Zade, Mahmood kashefipour, Mahmood Shafai Bajestan   +2 more
doaj   +1 more source

Revisiting paravertebral muscles in European rabbits (Oryctolagus cuniculus) and European brown hares (Lepus europaeus) (Leporidae; Lagomorpha)

The Anatomical Record, EarlyView.
Abstract Domesticated European rabbits (Oryctolagus cuniculus) have long been chosen as laboratory model organisms. Despite this, there has been no definitive study of the vertebral musculature of wild rabbits. Relevant descriptions of well‐studied veterinary model mammals (such as dogs) are generally applicable, but not appropriate for a species ...
Nuttakorn Taewcharoen, Emma Sherratt, Philip Stott, Rachel Norris   +3 more
wiley   +1 more source

Numerical investigation of scour behavior around complex piers under flood conditions

Frontiers in Built Environment
IntroductionLocal scour at bridge piers is a primary cause resulting bridge failure, a risk that is significantly exacerbated under extreme hydrodynamic events such as floods.MethodsThis study presents a numerical investigation of the scour behavior ...
Qiang Qin, Liangliang Shi, Yufei Li, Yujie Li, Haozhou Qin, Gang Ren, Zhiying Yang   +6 more
doaj   +1 more source

Evolution features of riverbeds near underwater crossing line pipes: An experimental study

Natural Gas Industry B, 2020
It is of important significance to study the evolution law of the riverbed near underwater crossing line pipes for ensuring the safe operation of oil and gas pipelines and reducing the risk of damage by water flood disasters.
Qian Yang, Mingnan Sun, Mo He, Qinghua Yang   +3 more
doaj   +1 more source

Hiding in Plain Sight: Rethinking the Size and Complexity of Iron Age Hillforts in NW Iberia Thanks to Aerial Archaeology and Geophysics

Archaeological Prospection, EarlyView.
ABSTRACT This paper tackles one key limitation in the analysis of Iron Age communities in the Northwestern Iberian Peninsula: the limited exploration of areas beyond the fortified settlements known as castros (hillforts). The vast majority of archaeological studies have focused exclusively on the areas inside the walls of these settlements, which are ...
César Parcero‐Oubiña, Carlos Otero‐Vilariño, María Gómez‐Faro, Jesús Ignacio Jiménez Chaparro, Pastor Fábrega‐Álvarez, Juan Torrejón‐Valdelomar, Marta Crespo‐Fernández, David González‐Álvarez   +7 more
wiley   +1 more source

Influence of junction angle on three-dimensional flow structure and bed morphology at confluent meander bends during different hydrological conditions [PDF]

, 2014
© 2014 John Wiley & Sons, Ltd. Recent field and modeling investigations have examined the fluvial dynamics of confluent meander bends where a straight tributary channel enters a meandering river at the apex of a bend with a 90° junction angle.
Abrahams, Abrahams, Ashmore, Best, Best, Best, Best, Best, Best, Best, Biron, Biron, Biron, Biron, Boyer, Bradbrook, Bradbrook, Bradbrook, Bristow, Callaway, Constantinescu, Davis, DeSerres, Dietrich, Dinehart, Dinehart, Dordević, Flint, Kenworthy, Kleinhans, Lane, Lane, Mackay, McLelland, McLelland, Mosley, Muste, Parsons, Parsons, Parsons, Parsons, Rhoads, Rhoads, Rhoads, Rhoads, Rhoads, Rhoads, Richardson, Riley, Roy, Roy, Stallard, Szupiany, Szupiany, Weerakoon, Zinger, Zinger   +56 more
core   +1 more source

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

Biological Reviews, EarlyView.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson, Ellen Wohl, Laura L. Govers, Oscar Franken, Tjeerd J. Bouma, Han Olff, Britas Klemens Eriksson, Maryann S. Watson, Luísa M.S. Borges, Tjisse van der Heide   +9 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

Three-dimensional flow structure and bed morphology in large elongate meander loops with different outer bank roughness characteristics [PDF]

, 2016
© 2016. American Geophysical Union. All Rights Reserved. Few studies have examined the three-dimensional flow structure and bed morphology within elongate loops of large meandering channels.
Abad, Jorge, Abad, Jorge D., Best, James L., Garcia, Marcelo H., García, Marcelo H., Konsoer, Kory, Konsoer, Kory M., Langendoen, Eddy J., Parsons, Dan R., Rhoads, Bruce, Rhoads, Bruce L.   +10 more
core   +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