Results 51 to 60 of about 32,235 (223)

Spectral Statistics of the Triaxial Rigid Rotator: Semiclassical Origin of their Pathological Behavior [PDF]

, 2003
In this paper we investigate the local and global spectral properties of the triaxial rigid rotator. We demonstrate that, for a fixed value of the total angular momentum, the energy spectrum can be divided into two sets of energy levels, whose classical ...
Manfredi, V. R., Penna, V., Salasnich, L.   +2 more
core   +2 more sources

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Mechanical parameter evolutions and deterioration constitutive model for ductile–brittle failure of surrounding rock in high-stress underground engineering

Underground Space
The deep surrounding rock is usually in the true triaxial stress state, and previous constitutive models based on the understanding of uniaxial and conventional triaxial test results have difficulty characterizing the degradation and fracture process of ...
Zhi Zheng, Ronghua Li, Qiang Zhang, Xiaohua Huang, Wei Wang, Shuling Huang   +5 more
doaj   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Uniformly rotating, axisymmetric and triaxial quark stars in general relativity

, 2017
Quasi-equilibrium models of uniformly rotating axisymmetric and triaxial quark stars are computed in general relativistic gravity scenario. The Isenberg-Wilson-Mathews (IWM) formulation is employed and the Compact Object CALculator (COCAL) code is ...
Rezzolla, Luciano, Tsokaros, Antonios, Uryū, Kōji, Xu, Renxin, Zhou, Enping   +4 more
core   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Study on Failure Difference of Hard Rock Based on a Comparison Between the Conventional Triaxial Test and True Triaxial Test

Frontiers in Earth Science, 2022
The study on the failure difference of deep hard rock based on the comparison between conventional and true triaxial tests can help us better understand the fracture processes and failure characteristics of the deep rock mass.
Guoqiang Zheng, Yonghui Tang, Yan Zhang, Yaohui Gao, Guoqiang Zhu, Meiben Gao, Meiben Gao, Junqian Ren, Kezhu Chen, Jicheng Sun   +9 more
doaj   +1 more source

Sand production simulation under true-triaxial stress conditions [PDF]

International Journal of Rock Mechanics and Mining Sciences, 2013
Abstract Laboratory sanding experiments were carried out under true-triaxial stress conditions. The objective was to investigate the effect of state of stresses and fluid flow on the mechanism of sanding, and the development of the failure zone around the borehole.
Younessi, Ahmadreza, Rasouli, Vamegh, Wu, Bailin   +2 more
openaire   +2 more sources

The orientation of elliptical galaxies

, 2010
We determine the orientations of the light distribution of individual elliptical galaxies by combining the profiles of photometric data from the literature with triaxial models. The orientation is given by a Bayesian probability distribution.
A. K. Diwakar, A.A. Stark, D. K. Chakraborty, D.K. Chakraborty, D.K. Chakraborty, J. Bak, J. Binney, M. Franx, P. Tenjes, P.T. Zeeuw de, R.F. Peletier, T.S. Statler, T.S. Statler, T.S. Statler, T.S. Statler, T.S. Statler, W. Dehnen   +16 more
core   +1 more source

The Dependence of Galaxy Shape on Luminosity and Surface Brightness Profile [PDF]

, 2005
For a sample of 96,951 galaxies from the Sloan Digital Sky Survey Data Release 3, we study the distribution of apparent axis ratios as a function of r-band absolute magnitude and surface brightness profile type.
Abramson I. S., Barbara S. Ryden, Benacchio L., Binney J., de Vaucouleurs G., Fasano G., Garijo A., Gerhard O. E., Huizinga J. E., Lambas D. G., R. Anthony Vincent, Vio R.   +11 more
core   +3 more sources