Results 61 to 70 of about 84,792 (273)
Local scour around spur dikes under ice-jammed flow conditions
Scientific ReportsThe occurrence of ice jams in rivers in cold regions during winter complicates the local scour process around spur dikes. In this study, laboratory experiments were conducted to investigate the effects of flow Froude number, ice–water flow ratio, the ...
Shiwen Cheng +3 more
doaj +1 more source
Three-dimensional numerical simulation of local scour based on spur dikes in a natural river
Shuili Shuiyun Gongcheng Xuebao, 2020 In order to study the influences of the spur dike length on the local scour of riverbed in the natural rivers, based on the shape of the natural river channels and the actual layout of the spur dikes, a three-dimensional computational fluid dynamics (CFD)
QI Lan, ZENG Qingda, JI Shunwen
doaj +1 more source
Effect of spur dike length on the horseshoe vortex system and the bed shear stress distribution
, 2015 Turbulent flow structures forming around isolated spur dikes in a horizontal channel are investigated in this study. In the analysis detached eddy simulation is used under fully turbulent incoming flow conditions at a channel Reynolds number of 45,000 ...
Göğüş, Mustafa, Köken, Mete
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Movable-bed experiments using spur dike to concentrate flow in one channel of multithreaded channel model [PDF]
, 2019 This paper presents the results of an experimental study in which an acoustic Doppler velocimeter (ADV) was used to monitor the longitudinal velocity profiles and discharge proportions in a channel with a mobile bed and banks.
Alsawaf, Mena +4 more
core +1 more source
British Educational Research Journal, EarlyView.Abstract In England, education is compulsory, but schooling is not: it is legal for families to home educate their children. This form of education is officially termed by the Department for Education as ‘Elective Home Education’. As this designation implies, many families home educate as a positive and preferential ‘choice’.
Katherine Davey +3 more
wiley +1 more source
Knowing education in Thailand like a global expert organisation: Politics, context and data
British Educational Research Journal, EarlyView.Abstract Global expert organisations play increasingly significant roles in the way that education is understood and governed internationally, including by influencing the discourses through which education is conceptualised and shaping norms of what counts as success, failure, progress and the most desirable visions for the future.
Steve Puttick +6 more
wiley +1 more source
A Systemic Model for Understanding Business Interactions With Biodiversity and Ecosystems
Business Strategy and the Environment, EarlyView.ABSTRACT Biodiversity loss and ecosystem degradation represent critical threats to human well‐being and economic resilience, challenging businesses to understand and manage their interdependence with natural systems. This study develops a systemic framework—the BioModel—that elucidates the reciprocal relationship between businesses, biodiversity, and ...
Lino Cinquini +2 more
wiley +1 more source
Global Ecology and Conservation, 2020 Although channelized urban streams provide aesthetic and economic value, they reduce biodiversity and alter the habitats of aquatic organisms. Spur dikes not only prevent the erosion of riverbanks, but also generally improve aquatic habitats. River 2D is
B. Ma +6 more
doaj +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT Whether corporate carbon management can enhance productive efficiency is central to firms' long‐term competitiveness and determines whether carbon reduction efforts can be sustained beyond regulatory compliance. This study examines how corporate carbon risk and opportunity management affects firm productivity (measured by total factor ...
Nan Huang, Hanlu Fan, Ruoxin Zhu
wiley +1 more source
Effects of relative dike hight on flow structures in submerged spur-dike zones [PDF]
To predict and control sediment transport and water quality exchange by using submerged spur-dike, it is necessary to clarify three-dimensional flow structures and instantaneous vortex structures around spur-dike zones.
Tominaga, Akihiro +5 more
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