Results 41 to 50 of about 708,486 (305)
Petroleum Exploration and Development, 2019 It is difficult to define safe drilling mud density window for shale sections. To solve this problem, the general Biot effective stress principle developed by Heidug and Wong was modified.
Shifeng ZHANG +5 more
doaj +1 more source
Numerical study of the collapse of a bubble subjected to a lithotripter pulse [PDF]
, 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
Through-wall yield collapse pressure of casing based on unified strength theory
Petroleum Exploration and Development, 2016 The unified algorithm of through-wall yield collapse pressure for casing with due consideration of strength differential (SD), yield-to-tensile strength ratio, material hardening and intermediate principal stress, which is suitable to calculate collapse ...
Yuanhua LIN +4 more
doaj +1 more source
Collapse Potential of Loess under Unloading Effect
Advances in Civil Engineering, 2021 Collapsible loess is generally characterized by a sudden and substantial decrease in volume that occurs when is applied under constant stress. To evaluate the loess collapse potential, the self-weight collapse and collapse coefficients have been defined ...
Xin Jin +4 more
doaj +1 more source
Turkish Archives of Otorhinolaryngology, 2020 Objective: To assess the effects of anatomical, clinical parameters, and pulmonary respiratory function on the therapeutic titration pressure of continuous positive airway pressure (CPAP) device in obstructive sleep apnea syndrome (OSAS).Methods: The ...
Tolga Kırgezen +5 more
doaj +1 more source
Experimental Investigation of Column Separation Using Rapid Closure of an Upstream Valve
Applied Sciences, 2023 In this study, the phenomenon of column separation that occurs in the downstream pipeline of a rapid closure valve is experimentally investigated. Special attention is paid to the dynamic behavior of the formation, growth, and collapse processes of ...
Huan Wang, Ling Zhou, Deyou Liu
doaj +1 more source
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
Molecular Oncology, EarlyView.Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson +9 more
wiley +1 more source
A chemo-mechanical coupling model of deviated borehole stability in hard brittle shale
Petroleum Exploration and Development, 2014 A chemo-mechanical coupling model of borehole stability in hard brittle shale considering structure characteristics and targeted hydration was established, the influencing factors of the distribution of collapse pressure were analyzed based on the model,
Hang WEN +6 more
doaj +1 more source
Cavitation bubble collapse pressures and erosion.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1988 Cavitation damage was studied by both the measurements of cavitation bubble collapse pressures (impact loads) using our developed method with piezoelectric ceramics and the cavitation erosion tests of various metals in a magnetostrictive vibratory facility.
Yoshiro IWAI +2 more
openaire +2 more sources