نتایج جستجو برای: internal erosion

تعداد نتایج: 262054  

Journal: :International Journal for Numerical and Analytical Methods in Geomechanics 2021

Abstract A hydro‐mechanical continuous model that accounts for volumetric internal erosion (otherwise called suffusion) is developed based on experimental observations and data to fill the gap between laboratory testing field applications. The proposed mixture theory applied a two‐phase four‐species porous medium. erodible soil partitioned in two phases: one solid phase fluid phase. composed of...

Journal: :Diagnostic and interventional radiology 2008
Esra Ozkavukcu Erdem Cayli Cemil Yağci Ilhan Erden

Isolated internal iliac aneurysms are rare. Unless rupture occurs, they usually remain asymptomatic. In this paper, a patient with a ruptured internal iliac aneurysm that resulted in chronic stage hematoma causing lumbosacral plexopathy and erosion of the pelvic bony structures is presented, along with magnetic resonance imaging (MRI) and computed tomography (CT) findings. To expedite the diagn...

2005
Wei Luo Alan D. Howard

[1] This paper employs a circularity function to quantify the internal morphology of Martian watershed basins in Margaritifer Sinus region and to infer the primary erosional processes that led to their current geomorphologic characteristics and possible climatic conditions under which these processes operated. The circularity function describes the elongation of a watershed basin at different e...

Journal: :The Journal of the Association of Physicians of India 2016
K V Vinod S Nishanth M V Vidya

Haemothorax is an uncommon and serious complication, occurring most often during or immediately after percutaneous internal jugular and subclavian vein catheterizations. Delayed haemothorax is a rare complication, especially following right-sided catheterization. We report a case of acute yellow phosphorus poisoning with acute liver failure (resulting from rat killer paste ingestion) in a 28-ye...

2002
Helena Mitasova Lubos Mitas William M. Brown

*Helena Mitasova, Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, 1120 Jordan Hall, Raleigh, NC, USA; Lubos Mitas, Department of Physics, North Carolina State University, Raleigh, NC, USA; William M. Brown, Geographic Modeling Systems Laboratory, Department of Geography, 220 Davenport Hall, University of Illinois at Urbana-Champaign, Urbana. *Corresponding...

Kaloutaks are a geomorphological forms of arid and semi-arid regions around the world. These features are extensive and varied in Iran, resulting from the erosion of fluvial and lake sediments of the Quaternary. Kaloutaks are mostly extended over the Eastern and Southeastern Iran and have unique features. Meanwhile, the kaloutaks in the playa of Sistan Hamun are considerably extended.  The stud...

2011
Matej Hudak Roman Durikovic

Visual simulation of natural erosion on terrains with granular matter, like sand, soil or gravel has been a fascinating research topic in the field of computer graphics for a long time. Ability of a fluid to drastically change internal structure or external shape of terrain is an important effect in nature. While there are many particle based algorithms to improve process of terrain erosion, on...

Journal: :Computers & Geosciences 2011
Philippe Steer Rodolphe Cattin Jérôme Lavé Vincent Godard

In this paper we present a new local remeshing algorithm that is dedicated to the problem of erosion in finite elementmodels whose grid follows themovement of the free surface. Themethod, which we name Surface Lagrangian Remeshing (SLR), is adapted to 2D Lagrangian models which couple surface erosion with deformation of Earth materials. The remeshing procedure preserves nodes defining the surfa...

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