نتایج جستجو برای: weirs

تعداد نتایج: 519  

Journal: :Archaeology and Physical Anthropology in Oceania 2022

ABSTRACT Fish traps and fish weirs built by Indigenous people in the Barwon‐Darling River system of Murray Darling Basin (MDB), south‐eastern Australia, are an important component their traditional social, spiritual economic systems. The celebrated Brewarrina stone ( Ngunnhu ) on Barwon largest best documented Basin. However, there has been minimal research many other this system. This paper fo...

2011
A. J. Schleiss

Free crest spillways are hydraulically efficient and safe in operation. Since their discharge capacity is directly proportional to the crest length several types have been developed with the purpose to increase the length of the latter. Among these types traditional labyrinth weir spillways have been studied and used for a long time. Their hydraulic performance and the effect of the involved ge...

2018
Jung Min Ahn Deuk Seok Yang Kang Young Jung Dong Seok Shin

In this study, an integrated system for the comprehensive analysis of climate change, runoff, reservoir operation, and power generation was developed. In order to apply reliable climate change scenarios to the Geum River Basin, we applied representative concentration pathway (RCP) scenarios adopted by the Intergovernmental Panel on Climate Change for its fifth assessment report in 2014 to the s...

Journal: :آب و خاک 0
کاظم اسماعیلی بنیامین نقوی فاطمه کورش وحید جعفر یزدی

abstract weirs are the most common structures for discharge measurement in engineering research. streamline curvature, non hydrostatic pressure distribution on weir and nappe adherence to the weir lead to differences between calculated and measured discharges. thus discharge coefficient, which is the ratio of real and theoretic discharges, is usually less than unity. in circular weirs the press...

Journal: :Science of The Total Environment 2016

Journal: :Minutes of the Proceedings of the Institution of Civil Engineers 1887

Journal: :Aquatic Conservation-marine and Freshwater Ecosystems 2021

River ecosystems are often fragmented by artificial structures, such as weirs. For anadromous species, these structures can impede access to upstream spawning sites and ultimately lead severe population declines. This study focused on the freshwater migration of sea lamprey, Petromyzon marinus, an species threatened habitat fragmentation across its native range. To quantify cumulative impacts m...

Journal: :Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation 2010

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