Results 161 to 170 of about 1,507,269 (398)

UTact: Underwater Vision‐Based Tactile Sensor with Geometry Reconstruction and Contact Force Estimation

open access: yesAdvanced Robotics Research, EarlyView.
Embedded flexible sensing technologies advance underwater soft robotics, yet most systems still suffer from hysteresis and limited perceptiveness. Instead, vision‐based tactile sensors provide reliable and rapid feedback essential for complex underwater tasks.
Qiyi Zhang   +5 more
wiley   +1 more source

Submandibular Gland Injury With a Ball Bearing Gunshot Wound. [PDF]

open access: yesCureus, 2020
Liu C   +4 more
europepmc   +1 more source

Hybrid bearings for LH2 and LO2 turbopumps [PDF]

open access: yes
Hybrid combinations of hydrostatic and ball bearings can improve bearing performance for liquid hydrogen and liquid oxygen turbopumps. Analytic studies were conducted to optimize hybrid bearing designs for the SSME-type turbopump conditions.
Butner, M. F., Lee, F. C.
core   +1 more source

Circular RNA PTPN4 Contributes to Blood‐Brain Barrier Disruption during Early Epileptogenesis

open access: yesAdvanced Science, EarlyView.
Epileptic condition induces CircPTPN4 upregulation, which promotes ECE‐1 expression through competitive sequestration of miR‐145a‐5p. The elevated ECE‐1 catalyzes the ET‐1 production, leading to p38/MAPK pathway activation and subsequent downregulation of tight junction protein expression. This cascade results in increased BBB permeability and enhanced
Jiurong Yang   +16 more
wiley   +1 more source

Optimization Analysis of Structure Parameter of Angular- contact Ball Bearings based on Fatigue Life

open access: yesJixie chuandong, 2016
According to calculated method of bearing fatigue life based on micro- area contact,a optimization model of structure parameters of angular- contact ball bearings is established. Taking an angular- contact ball bearing used in certain gas- turbine engine
Ye Zhenhuan, Liu Zhansheng, Wang Liqin
doaj  

The performance and application of high speed long life LH2 hybrid bearings for reusable rocket engine turbomachinery [PDF]

open access: yes
Data are presented for two different experimental programs which were conducted to investigate the characteristics of a hybrid (hydrostatic/ball) bearing operating in liquid hydrogen. The same bearing design was used in both programs.
Hannum, N. P., Nielson, C. E.
core   +1 more source

Long‐Term Effects of Xenotransplantation of Human Enteric Glia in an Immunocompetent Rat Model of Acute Brain Injury

open access: yesAdvanced Science, EarlyView.
Acute brain injuries are characterized by extensive tissue damage, resulting in debilitating deficits in patients. Despite considerable progress, cell‐based approaches have yet to identify an ideal candidate. This long‐term study explores the use of an untested cell source – human enteric glia – and a non‐invasive administration route – intranasal ...
Nina Colitti   +11 more
wiley   +1 more source

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