Results 81 to 90 of about 5,866,207 (252)
On local scour around spur dikes
, 2000 Estimation of possible maximal scour depth around the head of spur dikes is an important step in the design of spur dikes foundation. This paper briefly analyses the characteristics of flow pattern and the complex eddy structure near the head of the spur
李家春, Chan L, 刘青泉
core +2 more sources
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017 Investigation of local scour around hydraulic structures particularly bridges is of crucial importance in river engineering. Bridge destruction mostly occurs as a result of scour phenomenon around piers and abutments, not because of structural weaknesses.
Hamed Shahsavari +2 more
doaj +1 more source
Scour-inducing flow around gravity anchors astride pipelines in currents
, 2014 This study simulated steady currents travelling past gravity anchors astride pipelines wallmounted on an immobile bed. Three-dimensional governing equations were solved with a Petrov–Galerkin finite element method.
L Cheng +5 more
core +1 more source
Interdisciplinary Medicine, EarlyView.Vaginal microbiota‐derived secretory factors enhance the regenerative capacity of human endometrial stem cells by upregulating VCAM1 and activating PI3K/Akt signaling. This microbiota–stem cell crosstalk promotes self‐renewal, migration, multilineage differentiation, and metabolic reprogramming in vitro and in vivo, establishing a novel microbiota ...
Soo‐Rim Kim +6 more
wiley +1 more source
Hazards due to large wood accumulations: Local scour and backwater rise
E3S Web of Conferences, 2018 Large wood (LW) in rivers increases the flow variability and provides habitats for various species. During flood events, transported logs can accumulate at river infrastructures and increase the flood hazard.
Schalko Isabella +3 more
doaj +1 more source
Food Security Versus Environmental Health: The Nitrogen Dilemma
Journal of Plant Nutrition and Soil Science, EarlyView.ABSTRACT Nitrogen is an essential element for plant growth and, consequently, crop production. However, the cycling of nitrogen in the environment can have negative effects. Here, we review the historical development of scientific and public awareness of these effects and the influence this has had on political action to control them.
Henrike Mielenz +8 more
wiley +1 more source
Ain Shams Engineering Journal, 2015 Scour around bridge supports such as abutments can result in structural collapse and loss of life and property, so there is a need to control and minimize the local scour depth.
Y. Abdallah Mohamed +3 more
doaj +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry +3 more
wiley +1 more source
The Effect of Geotextile Layer in Decreasing Local Scour of Cylindrical Bridge Pier
علوم آب و خاک, 2017 Flood currents are considered threatening factors by creating local scour along bridge piers. One method for decreasing local scour is to strengthen the bed against imposed tensions.
A. NOURI IMAMZADEHEI +3 more
doaj
Land Degradation &Development, EarlyView.ABSTRACT Coastal wetlands are critical blue carbon sinks, yet their spatiotemporal dynamics under environmental change remain insufficiently quantified. Taking the Yellow River Delta (YRD) as a natural laboratory, this study synthesizes multi‐source remote sensing data, including optical and radar imagery spanning from 1984 to 2023, to explore the ...
Mengqian Jiang +6 more
wiley +1 more source