نتایج جستجو برای: waterway

تعداد نتایج: 902  

2009
Abdelazim M. Negm Gamal M. Abdel-Aal Magid M. Elfiky Yasser A. Mohamed Govinda Rao

Many of the huge structures like New Esna, and New Nega Hammadi Barrages face a great harmful caused by local scour downstream (DS) their stilling basins. It is planned to redesign many of these structures to minimize these harmful impacts of the DS local scour. This research paper presents the results of an extensive experimental investigation on using an optimized submerged curved deflector t...

2017
Joe D. Luck Adam C. Pike Santosh Pitla Tom Mueller Scott A. Shearer

Grassed waterways placed in high water flow zones substantially reduce erosion in agricultural fields. A recent study proposed a statistical model for waterway planning for a farm in the Outer Bluegrass physiographic region of Kentucky. The logistic regression model identified where channel erosion was likely to occur based on elevation-derived terrain attributes. The objective of this study wa...

ژورنال: علوم آب و خاک 1998
خلیلی, داور , یوسفی, ابوالقاسم ,

Physiographic characteristics of Atrak Watershed described by a number of parameters were used in regression models to estimate maximum daily discharges. These parameters were sub-watershed area, main waterway length, mean waterway slope, mean watershed elevation and mean watershed slope. Based on the results of correlation between the above parameters and their suitability for discharge estima...

2015
M. Mostert A. Caris S. Limbourg

Intermodal transport is an efficient solution for reducing greenhouse gases of freight transport but it requires intermodal terminals, where the transfer between modes can occur. The location of these terminals is a key factor for achieving economic and environmental competitiveness. A bi-objective model for the intermodal terminal location-allocation problem is developed. The focus is on road ...

Journal: :Systems 2016
Leonard Petnga Mark Austin

Waterway and canal systems are particularly cost effective in the transport of bulk and containerized goods to support global trade. Yet, despite these benefits, they are among the most under-appreciated forms of transportation engineering systems. Looking ahead, the long-term view is not rosy. Failures, delays, incidents and accidents in aging waterway systems are doing little to attract the t...

Journal: :Journal of Political Economy 1911

2015
Todor Bačkalić Marinko Maslarić Milosav Georgijević Sanja Bojić

Abstract—Presented article outlines a rationale, why it is necessary to develop competence about infrastructure risk in water transport. Climate changes are evident and require special attention and global monitoring. Current risk assessment methods for Inland waterway transport just consider some dramatic events. We present a new method for the assessment of risk and vulnerability of inland wa...

Journal: :International Journal for Innovation Education and Research 2019

خلیلی, داور, یوسفی, ابوالقاسم,

Physiographic characteristics of Atrak Watershed described by a number of parameters were used in regression models to estimate maximum daily discharges. These parameters were sub-watershed area, main waterway length, mean waterway slope, mean watershed elevation and mean watershed slope. Based on the results of correlation between the above parameters and their suitability for discharge estima...

ژورنال: مرتع 2021
Dargahi, Afrooz, Motamedi, Javad, Sheidai Karkaj, Esmaeil,

The plant communities locating at the margins of the waterways play a vital role in the ecological processes and ecosystem services in the semi-arid mountainous regions. In this study, variations of plant diversity and composition at different distances from the waterway and its slope aspects were investigated. For this purpose, 15 sub-basins with a variety of area and length of waterway, in bo...

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