Results 41 to 50 of about 1,260 (261)

Comparison of Symmetrical and Unsymmetrical Rectangular Collars on Reduction of Local Scour at Bridge Abutment [PDF]

open access: yesعلوم و مهندسی آبیاری, 2014
Already many studies have been done on the mechanism of scour around hydraulic structure especially bridges and methods for control or reduction of scour around them have been investigated and evaluated.
Hossein Khozeymehnezhad   +2 more
doaj  

Erosion resistance of sand particles based on improved device in simplified scour resistance tests

open access: yesYantu gongcheng xuebao, 2020
Establishing the relationships among the erosion process, development mechanism and macroscopic phenomena by exploring the movement of soil particles under the local flow field is one of the important methods to study the mechanism of scour.
YUAN Ye , WANG Chen , LIANG Fa-yun
doaj   +1 more source

Linking community structure and climate vulnerability in desert plant assemblages of southern California

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Desert plant assemblages in southern California provide an opportunity to link patterns of community structure with climate‐driven vulnerability in a rapidly changing environment. California sustains an exceptionally diverse flora of approximately 4300 plant species, with 31% identified as endemic.
Hector Zumbado‐Ulate   +4 more
wiley   +1 more source

Experimental and numerical investigation into the local scour of bridge cofferdam with anti-scour ribs

open access: yesAdvances in Bridge Engineering
Cofferdam is widely employed in the construction of underwater bridge foundations. Its crucial attribute lies in providing a dedicated platform for construction activities and enhancing the water resistance dimensions in structural design, consequently ...
Pengxin Ran   +5 more
doaj   +1 more source

Effects of increasing the width of collar on reduction of scouring surrounding the rectangular piers in a 180-degree bend

open access: yesApplied Water Science, 2023
Employment of protective structures is vital for reducing the effect of the local scour created surrounding the bridge piers. One of the most effective protective structures used for controlling and reducing scour surrounding the bridge piers is the ...
Danesh Dehghan   +2 more
doaj   +1 more source

Success of coastal sage scrub restoration is influenced by local adaptations of shrub species

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Restoring plant communities is increasingly challenging with climate change. While practitioners have traditionally used local seed sources, many are recommending assisted migration, possibly from more extreme environments such as inland rather than coastal environments, for restoration.
Moises R. Perea‐Vega   +7 more
wiley   +1 more source

Numerical investigation of the influence of a hole at the pier of the bridge on the flow characteristics of the pier [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2017
The scour around the pier leads to bridge demolition. Therefore, the perception of the factors’ behavior affecting the scour and the capability to predict this phenomenon can offer important information to bridge designers.
Ehsan Jabbari   +2 more
doaj   +1 more source

An experimental study of the engineering properties and erosion resistance of guar gum-reinforced loess

open access: yesShuiwen dizhi gongcheng dizhi, 2022
To reduce the erosion of the loess slope under the condition of rainstorms, the loess cured by guar gum is used to protect the slope surface. The engineering properties and erosion resistance of the guar gum-reinforced loess are studied by conducting the
Wanli YANG   +4 more
doaj   +1 more source

Mechanism and Protective Measures of Local Scouring of Bridge Piers

open access: yesFrontiers in Science and Engineering, 2022
With the rapid development of China's bridge cause, more and more Bridges are being built across the country, and the protection of bridge piers has become more and more important. Based on the local erosion mechanism of bridge pier, this paper summarizes and analyzes the influencing factors of local erosion and the evolution process of erosion pit ...
openaire   +1 more source

Revisiting paravertebral muscles in European rabbits (Oryctolagus cuniculus) and European brown hares (Lepus europaeus) (Leporidae; Lagomorpha)

open access: yesThe Anatomical Record, EarlyView.
Abstract Domesticated European rabbits (Oryctolagus cuniculus) have long been chosen as laboratory model organisms. Despite this, there has been no definitive study of the vertebral musculature of wild rabbits. Relevant descriptions of well‐studied veterinary model mammals (such as dogs) are generally applicable, but not appropriate for a species ...
Nuttakorn Taewcharoen   +3 more
wiley   +1 more source

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