Results 21 to 30 of about 464,941 (308)

The role of rock joint frictional strength in the containment of fracture propagation [PDF]

open access: yes, 2016
The fracturing phenomenon within the reservoir environment is a complex process that is controlled by several factors and may occur either naturally or by artificial drivers.
A Palmstrom   +80 more
core   +1 more source

Rock mass characterization coupled with seismic noise measurements to analyze the unstable cliff slope of the Selmun Promontory (Malta) [PDF]

open access: yes, 2017
In the Mediterranean area, cliff slopes represent widespread high-risk landforms as they are highly frequented touristic places often interested by landslide processes.
D’Amico, Sebastiano   +3 more
core   +1 more source

Geoengineering characterization of the rock masses of northern face of Jabal Sabir, Taiz city, Yemen [PDF]

open access: yes, 2011
This paper is aimed at thedescription and the geotechnical characterization of the Tertiary granitic rock masses of the northern face of Sabir Mountain, Taiz city, Yemen, for the first time.
Abdul-Aleam Ahmed, A. D.   +2 more
core   +2 more sources

Single-Cell Transcriptomic Analysis Unveils Key Regulators and Signaling Pathways in Lung Adenocarcinoma Progression

open access: yesBiomedicines
Background: Lung adenocarcinoma (LUAD) remains a leading cause of cancer-related mortality despite advances in treatments, necessitating more effective therapeutic strategies.
Jialu Ma   +4 more
doaj   +1 more source

THE SURVEY AND THE ANALYSIS OF ROCK JOINT AND THE DETERMINATION OF JOINTED ROCK MASS MODEL

open access: yesDoboku Gakkai Ronbunshu, 1996
原位置においてボーリング孔壁観察を行い, 得られた画像データをもとに不連続面の位置, 走向・傾斜, 開口幅等を画像処理により求めた. これらの結果を解析することにより, 2種類の不連続性岩盤のモデル化を行った. 一つは, 方向分析によって得られる不連続面群を用いた不連続体モデルである. 本研究では, 頻度, 面積, 開口幅を考慮した不連続面群の相対重要度を比較するパラメータの提案を行い, 実際の計測結果に適用を行った. もう一つは, 地質構造や不連続面の開口幅を考慮にいれて求めるき裂頻度をもとにした擬似連続体モデルの提案を行った. これにより, 変形性や透水性を検討する解析モデルや, ジオトモグラフィー解析などの精度向上に貢献する初期モデルの構築に利用できるものと考える.
Chikaosa Tanimoto   +4 more
openaire   +2 more sources

Development of a research methodology and analysis of the stress state of a parting under the joint and downward mining of coal seams [PDF]

open access: yes, 2018
Purpose. The investigation of the stress-strain state (SSS) of a parting under the joint and downward mining of coal seams. Methods. The studies have been carried out on the basis of a computational experiment by means of the finite elements method ...
Barabash, M, Kovalevska, I, Snihur, V
core   +1 more source

Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability [PDF]

open access: yes, 2020
The rock slope stability assessment can be performed by means of deterministic and probabilistic approaches. As the deterministic analysis needs only representative values (generally, the mean value) for each physical and geo-mechanical parameter ...
BUDETTA, PAOLO
core   +1 more source

Estimation of the rock deformation modulus and RMR based on data mining techniques [PDF]

open access: yes, 2012
In this work Data Mining tools are used to develop new and innovative models for the estimation of the rock deformation modulus and the Rock Mass Rating (RMR). A database published by Chun et al. (2008) was used to develop these models. The parameters of
Martins, Francisco F.   +1 more
core   +1 more source

Flow Chemistry as an Enabling Technology for Process-Intensified Amination Reactions: A Decadal Review

open access: yesMolecules
Amines are indispensable structural motifs in pharmaceuticals, agrochemicals, functional materials, and beyond, driving continuous demand for efficient synthetic methods.
Feng Zhou   +6 more
doaj   +1 more source

Detection of nanoseismic events related to slope instabilities in the quarry district of Coreno Ausonio (Italy) [PDF]

open access: yes, 2016
Le cave per l’estrazione di materiale roccioso rappresentano contesti in cui possono aver luogo eventi di instabilità gravitativa causati dalle continue sollecitazioni cui sono soggette le pareti produttive, principalmente connesse alle vibrazioni dovute
FIORUCCI, MATTEO   +3 more
core   +1 more source

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