Results 1 to 10 of about 2,680,418 (361)

Efficient and Controllable Synthesis of 1-Aminoanthraquinone via High-Temperature Ammonolysis Using Continuous-Flow Method

open access: yesMolecules, 2023
Anthraquinone dyes are the second most important type of dyes after azo dyes. In particular, 1-aminoanthraquinone has been extensively utilized in the preparation of diverse anthraquinone dyes. This study employed a continuous-flow method to synthesize 1-
Feng Zhou   +8 more
doaj   +1 more source

Experimental study on shear performance of saw-tooth rock joint with weak interlayer under different moisture contents and filling degrees

open access: yesFrontiers in Earth Science, 2023
Rock joints are important factors affecting natural disasters such as landslides, and weak interlayer is the decisive factor for rock joint stability. Therefore, it is necessary to carry out shear test research on rock joints with weak interlayer.
Zhanyou Luo   +6 more
doaj   +1 more source

Effect of Joint Density on Rockburst Proneness of the Elastic-Brittle-Plastic Rock Mass

open access: yesShock and Vibration, 2021
The prediction of rockburst proneness is the basis of preventing and controlling rockburst disasters in rock engineering. Based on energy theory and damage mechanics, the quantitative functional relationship between joint density and energy density was ...
Jiliang Pan, Fenhua Ren, Meifeng Cai
doaj   +1 more source

Seismic response of rock joints and jointed rock mass [PDF]

open access: yes, 1996
Long-term stability of emplacement drifts and potential near-field fluid flow resulting from coupled effects are among the concerns for safe disposal of high-level nuclear waste (HLW). A number of factors can induce drift instability or change the near-field flow patterns.
Ghosh, A.   +2 more
openaire   +2 more sources

Stress effect & scale effect on shear properties of double saw-tooth rock joint surface

open access: yesApplied Rheology, 2021
The shear properties of rock joint control the stability of rock and have an important impact on natural disasters such as landslides and debris flow. In order to study the stress effect and scale effect of shear properties of double saw-tooth rock joint,
Luo Zhanyou   +4 more
doaj   +1 more source

Toward the precision breast cancer survival prediction utilizing combined whole genome-wide expression and somatic mutation analysis

open access: yesBMC Medical Genomics, 2018
Background Breast cancer is the most common type of invasive cancer in woman. It accounts for approximately 18% of all cancer deaths worldwide. It is well known that somatic mutation plays an essential role in cancer development. Hence, we propose that a
Yifan Zhang   +5 more
doaj   +1 more source

Experimental and Numerical Study of the Uniaxial Compressive Stress-Strain Relationship of a Rock Mass with Two Parallel Joints

open access: yesArchives of Civil Engineering, 2019
A “rock bridge”, defined as the closest distance between two joints in a rock mass, is an important feature affecting the jointed rock mass strength.
Xiong L. X.   +4 more
doaj   +1 more source

Evolution Characteristics of Plastic Zone in Jointed Rock Mass of High-Temperature Hydraulic Tunnel

open access: yesApplied Sciences, 2023
The evolution characteristics and the extent of the plastic zone in rock mass can reflect the failure characteristics and destruction degree of a hydraulic tunnel.
Kangbin Li   +3 more
doaj   +1 more source

IMAGE ANALYSIS FOR MODELLING SHEAR BEHAVIOUR

open access: yesImage Analysis and Stereology, 2011
Through laboratory research performed over the past ten years, many of the critical links between fracture characteristics and hydromechanical and mechanical behaviour have been made for individual fractures.
Philippe Lopez   +5 more
doaj   +1 more source

An empirical statistical constitutive relationship for rock joint shearing considering scale effect

open access: yesComptes rendus. Mecanique, 2019
The scale effect of rock joint shearing is of great significance in rock engineering. Most existing shear constitutive models could describe the pre- and post-peak deformation of rock joints, but only in one particular scale, that is, those existing ...
Hang Lin   +4 more
semanticscholar   +1 more source

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