نتایج جستجو برای: rock stiffness
تعداد نتایج: 81639 فیلتر نتایج به سال:
Disease in Immunocompromised Hosts: A case-Control Study Senu Apewokin, MD; Aasiya Matin, MD; Naveen Sanath Kumar, MD; Shebli Atrash, MD; Bakhous Aziz; Jameel Muzaffar; Vyjayanthi Ganga, MD; Monica Grazziutti, MD; Medicine, University Of Arkansas For Medical Sciences, Little Rock, AR; Myeloma Institute or Research and Therapy, UNIVERSTIY OF ARKANSAS FOR MEDICAL SCIENCES, LITTLE ROCK, AR; The My...
BACKGROUND The Rho kinase pathway plays a key role in many early cell/tissue determination events that take place in embryogenesis. Rho and its downstream effector Rho kinase (ROCK) play pivotal roles in cell migration, apoptosis (membrane blebbing), cell proliferation/cell cycle, cell-cell adhesion and gene regulation. We and others have previously demonstrated that inhibition of ROCK blocks e...
Rock bolts ensure structural stability for tunnels and many other underground structures. The pre-load on a rock bolt plays an important role in the structural reinforcement and it is vital to monitor the pre-load status of rock bolts. In this paper, a rock bolt pre-load monitoring method based on the piezoceramic enabled time reversal method is proposed. A lead zirconate titanate (PZT) patch t...
In the present work we used experimental relative volume unit cell and elastic stiffness constants measured by Speziale et al. (Journal of Geophysical Research, Vol. 111, (2006), pp. B02203 (12 pages)) using Radial X-Ray Diffraction at high pressure from 5.6 up to 65.2 GPa investigate effect on bulk modulus, aggregate shear wave velocities Debye temperature calcium oxide (CaO) ceramic material ...
It is of great significance to study the mechanical properties rock fracture for stability engineering projects. The properties, including normal compression and shear fracture, are studied by a series tests considering effect lateral stress using self-developed true triaxial test apparatus. results show that initial stiffness maximum closure value increase with stress, peak strength dilatancy ...
OBJECTIVE It has been reported that leukocyte ROCK activity is elevated in patients after ischemic stroke, but it is unclear whether leukocyte ROCK activity is associated with clinical outcomes following acute stroke events. The objective of this study is to investigate if leukocyte ROCK activity can predict the outcomes in patients with acute ischemic stroke. MATERIALS AND METHODS We enrolle...
The paper presents summary of the work carried out by the author on the modelling of jointed rock mass with some field applications. The equivalent continuum analyses approach presented attempts to use statistical relations, which are simple and obtained after analyzing a large data from the literature on laboratory test results of jointed rock masses. Systematic investigations were done includ...
The prediction of rock mass behavior is an important task in many engineering projects, as the behavior of rock masses can be controlled by the presence of discontinuities. Being able to map the structure of a rock mass is crucial to understanding its potential behavior. This understanding can positively impact the safety and efficiency of an engineering project. In this research, rock masses w...
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