Results 71 to 80 of about 1,334,534 (307)

Ultrasonic Phased Array Inspection Technology for Side Door of Ram BOP Shell

Shiyou jixie, 2022
Ram BOP is the key equipment of well control and the sealing part of its side door has always been a weak point.Under high pressure impact and cyclic load,stress concentration occurs locally,producing fatigue cracks.In order to effectively detect the ...
Wang Shiqiang, Yu Peihang, Xu Yongjun, He Sha, Xu Qiang, Yu Jiamin, Zhao Qiyue   +6 more
doaj  

An Improved 2D Meshfree Radial Point Interpolation Method for Stress Concentration Evaluation of Welded Component

Applied Sciences, 2020
The study of characterizing the stress concentration effects at welds is one of the most important research directions for predicting the fatigue life of welded components.
Fuming Bao, Bingzhi Chen, Yanguang Zhao, Xinglin Guo   +3 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads [PDF]

, 2018
Numerous research works have studied the stress distribution in sections with geometric discontinuities and the relationship with the theoretical factor of stress concentration using the finite element method.
Acevedo Peñaloza, Carlos Humberto, Espinel Blanco, Edwin, Rojas Suárez, Jhan Piero   +2 more
core   +1 more source

Finite Element Analysis on Mechanical Strength of Casing at Slip Hanger in Ultra-deep Wells

Shiyou jixie, 2023
In order to solve the casing failure occurred at slip clamp of wellhead hanger when lifting the oil production cross for replacing the sealing element in an oilfield in Xinjiang,combined with the ø232.5 mm W type slip hanger used in Well X1,a 3D ...
Lian Zhanghua, Wan Zhiyong, Wu Yanxian, Shi Junlin, Zhao Zhaoyang   +4 more
doaj  

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source

Oscillating shear index, wall shear stress and low density lipoprotein accumulation in human RCAs [PDF]

, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Soulis, JV, Giannoglou, GD, Fytanidis, DK, Papaioannou, VC, 3rd Micro and Nano Flows Conference (MNF2011)   +4 more
core  

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

The effects of inspiratory muscle training on plasma interleukin-6 concentration during cycling exercise and a volitional mimic of the exercise hyperpnea [PDF]

, 2013
It is unknown whether the respiratory muscles contribute to exercise-induced increases in plasma interleukin-6 (IL-6) concentration, if this is related to diaphragm fatigue, and whether inspiratory muscle training (IMT) attenuates the plasma IL-6 ...
Gonzalez, JT, Mills, Dean E., Gonzalez, Javier T., Neil C. Williams, Sharpe, GR, Sharpe, Graham R., McPhilimey, Martin J., Williams, NC, Mills, Dean, Gonzalez, Javier, McPhilimey, Martin, McPhilimey, MJ, Johnson, Michael A., Yvonne A. Barnett, Graham R. Sharpe, Barnett, YA, Martin J. McPhilimey, Mills, DE, Barnett, Yvonne, Javier T. Gonzalez, Sharpe, Graham, Williams, Neil C., Dean E. Mills, Johnson, MA, Barnett, Yvonne A., Michael A. Johnson, Williams, Neil   +26 more
core   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

FEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas, Brigitta Maruzs, Zsófia E. Kálmán, Tomas Klumpler, Gyula Batta, Bálint Péterfia, Zoltán Gáspári   +6 more
wiley   +1 more source