نتایج جستجو برای: fracture network

تعداد نتایج: 765025  

Journal: :Lecture Notes in Computer Science 2023

Abstract A fracture network model is a powerful tool for characterizing fractured rock systems. In this paper, we present the by integrating machine learning algorithm in two-dimensional setting to predict natural topology porous media. We also use azimuth angle fault data from Kazakhstan. The results indicate that with LightGBM performs better designing parameter hidden areas based on known ar...

2008
Donald M. Reeves David A. Benson Mark M. Meerschaert

[1] This paper investigates whether particle ensembles in a fractured rock domain may be adequately modeled as an operator-stable plume. If this statistical model applies to transport in fractured media, then an ensemble plume in a fractured rock domain may be modeled using the novel Fokker-Planck evolution equation of the operator-stable plume. These plumes (which include the classical multi-G...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید بهشتی - دانشکده پزشکی 1380

درا ین مطالعه کلیه افرادی که تحت عمل tha در بیمارستان اختر از تاریخ 65-77 قرار گرفته اند از لحاظ عوارض و علل ونوع عمل تحت بررسی قرار گرفته اند. در مطالعه قوق مشخص گردید که شایع ترین شکایت بیماران در دو عیودیت حرکت بوده و شایع ترین علت ایجاد کننده secindary از نوع djd بوده است. و شایع ترین بیماران همراه fracture بوده است. و شایع ترین عوارض آن شامل dislocation بوده است.

2012
Zhan H. Yang Andrew T. Detwiler Alan J. Lesser

An innovative scheme to prepare Prestressed double network (PDN) epoxies is presented using a judicious combination of tetrafunctional curatives that have similar molecular weights but different reaction kinetics. A diglycidyl ether of bisphenol A epoxy monomer was reacted stoichiometrically and sequentially with various molar ratios of an aliphatic polyetheramine curing agent and an aromatic c...

2010
Zhaoqin Huang Jun Yao Yajun Li Chenchen Wang Xinrui Lv

Abstract. A numerical procedure for the evaluation of equivalent permeability tensor for fractured vuggy porous media is presented. At first we proposed a new conceptual model, i.e., discrete fracture-vug network model, to model the realistic fluid flow in fractured vuggy porous medium on fine scale. This new model consists of three systems: rock matrix system, fractures system, and vugs system...

2015
Mathieu Bauchy Mengyi Wang Yingtian Yu Bu Wang Morten M. Smedskjaer Christophe Bichara Franz-Josef Ulm Roland Pellenq

The relationship between composition, structure, and resistance to fracture remains poorly understood. Here, based on molecular dynamics simulations, we report that 1 sodium silicate glasses (NS) and calcium–silicate–hydrates (CSH) feature an anomalous maximum in fracture toughness. In the framework of topological constraint theory, this anomaly is correlated to a flexible-to-rigid transition, ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید