Results 61 to 70 of about 5,144,321 (345)

Prediction and Application of Pore Pressure in Guangming Structure Formation of Hetao Basin

open access: yesCejing jishu
To ensure drilling safety and optimize reservoir evaluation in ultra-deep and high-pressure formations of the Guangming structure in the Hetao basin, solve accidents such as overflow and collapse caused by inaccurate pore pressure prediction, and support
YU Weigao   +7 more
doaj   +1 more source

Analysis of Collapse Pressure Performance of Ultra-High Pressure Perforating Gun under Different Blind Hole Depths

open access: yesShiyou jixie, 2021
For the blind hole depth, outer diameter ellipticity and wall thickness unevenness that affect the collapse performance of ultra-high pressure perforating gun, an ideal geometric model and a model with geometric defects of ultra-high pressure perforating
Wang Qiang   +5 more
doaj  

Numerical study of the collapse of a bubble subjected to a lithotripter pulse [PDF]

open access: yes, 2006
The collapse of a bubble subjected to a lithotripter pulse is studied numerically. The goal is to record the pressure exerted along the stone, as a measure of potential stone damage. It is found that the pressure due to buble collapse is much larger than
Colonius, Tim, Johnsen, Eric
core   +1 more source

Testing a Personalized Approach to Chronic Low Back Pain: A Randomized Controlled Trial in Older Veterans

open access: yesArthritis Care &Research, EarlyView.
Objective We aimed to test the efficacy of personalized treatment of older veterans with chronic low back pain (CLBP) delivered by Aging Back Clinics (ABCs) as compared with usual care (UC). Methods Two hundred ninety‐nine veterans aged 65 to 89 with CLBP from three Veterans Affairs (VA) medical centers underwent baseline testing, randomization to ABC ...
Debra K. Weiner   +9 more
wiley   +1 more source

Research on Wellbore Collapse of Stratification Formation

open access: yesShiyou jixie, 2019
The development micro-fractures, joints and bedding in the middle and deep strata of the Bohai Oilfield makes the collapse pressure predicted using conventional integrate formation not consistent with actual situation.
Zhang Lei   +4 more
doaj  

Rebounce and Black hole formation in a Gravitational Collapse Model with Vanishing Radial Pressure

open access: yes, 2007
We examine spherical gravitational collapse of a matter model with vanishing radial pressure and non-zero tangential pressure. It is seen analytically that the collapsing cloud either forms a black hole or disperses depending on values of the initial ...
A. Einstein   +19 more
core   +1 more source

Stability and collapse of rapidly rotating, supramassive neutron stars: 3D simulations in general relativity [PDF]

open access: yes, 1999
We perform 3D numerical simulations in full general relativity to study the stability of rapidly rotating, supramassive neutron stars at the mass-shedding limit to dynamical collapse. We adopt an adiabatic equation of state with $\Gamma = 2$ and focus on
A. M. Abrahams   +40 more
core   +2 more sources

Clinical Practice Guideline for Evaluation and Management of Peripheral Nervous System Manifestations in Sjögren's Disease

open access: yesArthritis Care &Research, Accepted Article.
Objectives Sjögren's disease is an autoimmune disorder that can impact multiple organ systems, including the peripheral nervous system (PNS). PNS manifestations, which can exist concurrently, include mononeuropathies, polyneuropathies, and autonomic nervous system neuropathies. To help patients and providers in the decision‐making process, we developed
Anahita Deboo   +19 more
wiley   +1 more source

Radiation Pressure in Massive Star Formation [PDF]

open access: yes, 2005
Stars with masses of >~ 20 solar masses have short Kelvin times that enable them to reach the main sequence while still accreting from their natal clouds.
Klein, Richard I.   +2 more
core   +1 more source

Enhancing the aggressive intensity of hydrodynamic cavitation through a Venturi tube by increasing the pressure in the region where the bubbles collapse

open access: yes, 2016
In this paper, we used a Venturi tube for generating hydrodynamiccavitation, and in order to obtain the optimum conditions for this to be used in chemical processes, the relationship between the aggressive intensity of the cavitation and the downstream ...
H. Soyama, J. Hoshino
semanticscholar   +1 more source

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