Results 11 to 20 of about 135 (128)

The Effect of Height and First Roughness Distance on Energy Dissipation in Piano Key Weirs [PDF]

open access: yesعلوم و مهندسی آبیاری, 2019
Along with the numerous developments and facilities for constructing large dams, there is a need for developing design and construction methods for systems that can correctly discharge the floods.
Mahboobeh Qanavati   +2 more
doaj   +1 more source

Blockage of Piano Key Weirs in Debris Flow with Individual Experiments [PDF]

open access: yesعلوم و مهندسی آبیاری, 2016
Due to the problems of hydraulic structures at blocking bodies in debris flows this research has been carried out. Hence, in this study the effect of the trap drop bodies such as logs and branches of trees on piano key weirs at individual step was ...
Kosar Mansouri, Javad Ahadian
doaj   +1 more source

Indigenous biocultural rights and the Blue Mountains: Local and international policy challenges

open access: yesGeographical Research, Volume 61, Issue 4, Page 413-428, November 2023., 2023
Abstract Indigenous knowledges play a critical role in addressing the environmental crisis, and the United Nations system has adopted a suite of international treaties to protect and strengthen Indigenous peoples’ rights, which are often described as biocultural rights.
Elodie Aime, Daniel Robinson
wiley   +1 more source

Are protected areas effective in preserving Alpine stream morphology and biodiversity? A field study in the oldest Italian National Park

open access: yesRiver Research and Applications, Volume 39, Issue 5, Page 942-953, June 2023., 2023
Abstract Global changes and local pressures related to the exploitation of water resources are significantly reducing streams' biodiversity and threatening their ecological balance. This trend concerns both the lowland rivers flowing in densely populated areas and the mountain headwaters, where the effects of global change are dramatically evident and ...
Francesca Bona   +5 more
wiley   +1 more source

Loss of functionally important and regionally endemic species from streams forced into intermittency by global warming

open access: yesGlobal Change Biology, Volume 29, Issue 11, Page 3019-3038, June 2023., 2023
Climate change is increasing dryness in southwestern Australia, causing permanent streams to switch to intermittent flows. Aquatic macroinvertebrates showed seven general responses to drying (i.e., 1980s vs. 2016/17), including localised extinction, persisted but became less common, or became more common.
Nicole Carey   +2 more
wiley   +1 more source

RESCUE: A geomorphology‐based, hydrologic‐hydraulic model for large‐scale inundation mapping

open access: yesJournal of Flood Risk Management, Volume 15, Issue 4, December 2022., 2022
Abstract Flood mapping is a key stage for detecting vulnerable areas, assessing floods impacts, identifying damages, and mitigation plans. Despite of the available guidelines for flood mapping following EU Floods Directive, coherent and comprehensive official flood hazard maps at the national scale are still missing, at least in the EU.
Luciano Pavesi   +3 more
wiley   +1 more source

Geography and film music: Musicology, gender, and the spatiality of instrumental music

open access: yesTransactions of the Institute of British Geographers, Volume 46, Issue 3, Page 570-583, September 2021., 2021
Musical geographies have previously focused on spatial meaning in lyrics. This paper sets out a research agenda for examining spatial meaning in instrumental music. To do so, it offers an extended case study of film music by the American composer James Horner (1953–2015). Film and music are key concerns in human geography.
Philip Kirby
wiley   +1 more source

Experimental comparison of discharge coefficient of A-type piano key and labyrinth side weirs with different heights [PDF]

open access: yesJournal of Applied Research in Water and Wastewater
Hydraulic structures have a long history, with weirs being among the earliest developed; a notable example of these is the side weir. Side weirs are of different shapes, including a nonlinear weir installed on the dam crest.
Saeid Jeddi, Jalal Sadeghian
doaj   +1 more source

Comparison of energy dissipation in downstream of stepped and baffled spillways of piano key weirs / Comparación de la disipación de energía en aguas abajo de aliviaderos escalonados y desconcertados de vertederos de tecla de piano

open access: yesTecnología y ciencias del agua, 2020
Heavy seasonal rains over a dam reservoir can lead to huge floods and consequent failure of the dam structure. One way of controlling the adverse effects of heavy rains is to use weirs with larger dimensions such as piano key weirs (PKWs).
Seyed Mehdi Naghib Zadeh   +4 more
doaj   +1 more source

Experimental study and performance comparison on various types of rectangular piano key side weirs at a 120° section of a 180° curved channel

open access: yesApplied Water Science, 2020
Application of side weirs with high effective length is necessary to discharge excessive flows, to control the flow in water conveyance systems, and irrigation and drainage systems.
Yaser Mehri   +2 more
doaj   +1 more source

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