Results 101 to 110 of about 2,915 (310)

Air entrainment and energy dissipation on porous pooled stepped spillways [PDF]

open access: yes, 2013
The hydraulics of stepped spillways with flat steps is well documented and some design guidelines exist for typical embankment dam slopes. On the other hand, alternative stepped designs are poorly understood.
Chanson, Hubert   +3 more
core  

Numerical Study of Energy Dissipation of Pooled Stepped Spillways

open access: yes, 2016
Water transferring to the dam downstream creates high levels of kinetic energy. Stepped spillways are amongst the most effective spillways in reducing the kinetic energy of the flow moving towards the downstream.
Soori, Saba   +2 more
core   +1 more source

Beyond salaries: Teachers' experiences of navigating early years education amid economic instability in Türkiye

open access: yesBritish Educational Research Journal, EarlyView.
Abstract The intersection of economic conditions and early years education has long been debated, particularly where financial constraints shape educational practice and professional realities. Türkiye, characterised by high inflation and structural vulnerabilities in purchasing power parity, provides a critical context for examining how economic ...
Ebru Aydın, Şerif Yüksel
wiley   +1 more source

Single‐subject designs in character education: Methods for rigorous, contextual, and practitioner‐led research

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Character education research is often constrained by blunt methodological tools. Surveys capture breadth without depth; case studies offer richness but lack replicability; and randomised controlled trials (RCTs), though indispensable at the policy level, are costly, disruptive and ill‐suited to everyday practice with individual pupils.
Shane McLoughlin
wiley   +1 more source

Comparison of chute aerator effect on stepped and smooth spillways [PDF]

open access: yes
Bottom chute aerators are installed to prevent cavitation damages and they have been studied in detail on smooth spillways. In parallel, stepped spillways became widespread in the past decades.
Terrier, Stéphane   +2 more
core  

Discharge Correlations for Spillways with Radial Gates

open access: yes, 2016
Equations used at the Tennessee Valley Authority (TVA) to compute free and gated (orifice) discharges through spillways with radial gates are presented along with correlations based on TVA model test data for discharge coefficients and submergence ...
Schohl, Gerald A
core   +1 more source

How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts

open access: yesBiological Reviews, EarlyView.
ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen   +15 more
wiley   +1 more source

A Methodological Approach to Water Concentration to Investigate the Presence of SARS-CoV-2 RNA in Surface Freshwaters. [PDF]

open access: yesPathogens, 2022
Tesauro M   +8 more
europepmc   +1 more source

Gated Spillways - Numerical and Physical Modelling

open access: yes, 2015
The paper presents experiences and particular contributions of physical and numerical modelling of gated spillways to safety and reliability of hydraulic structures gained during an extensive experimental programme. The first part presents physical model
Satrapa L.   +3 more
core  

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