Results 31 to 40 of about 1,809,715 (303)

Statics and Dynamics of V-shaped Micro-beams Under Axial Forces

, 2020
We present an investigation into the static and dynamic behaviors of electrostatically actuated in-plane micro-electro-mechanical V-shaped micro-beam under axial loads.
Alcheikh, Nouha, Ouakad, Hassen, Rocha, Rodrigo Tumolin, Ben Mbarek, Sofiane, Younis, Mohammad I.   +4 more
core   +1 more source

Decomposing of lubricating oil caused the blackening wear of porous polyimide—Or is it?

Friction
In practical applications, the pocket surface of a porous polyimide (PPI) cage often experiences blackening wear, which may lead to lubrication failure. However, the mechanism of blackening wear is still controversial. In this study, the impact of oxygen
Zhengrong Xu, Jinbang Li, Kai Li, Chenchun Shi, Ningning Zhou, Tao Qing, Yuguo Cui   +6 more
doaj   +1 more source

Preparation and properties of sandwich type density layered porous polyimide materials

Cailiao gongcheng
Porous polyimide materials （PPI） have interconnected pore structures that can effectively store lubricating oil. However，the presence of these pores will reduce the strength and wear resistance of PPI，resulting in a mutual constraint between its oil ...
YE Zhijian, XU Zhengrong, LI Jinbang, LI Kai, FU Jiao, CHANG Jiangjuan, SHI Chenchun, ZHOU Ningning   +7 more
doaj   +1 more source

Micro-abrasion resistance of thermochemically treated steels in aqueous solutions: Mechanisms, maps, materials selection [PDF]

, 2008
The area of micro-abrasion is an interesting and relatively recent area in tribo-testing methodologies, where small particles of less than 10 μm are employed between interacting surfaces.
Rocha, L.A., Mathew, M. T., Stack, Margaret, Ariza, E., Stack, M. M., Matijevic, B., Mathew, M.T., Rocha, L. A.   +7 more
core   +1 more source

Ultra-Long, Minor-Diameter, Untethered Growing Continuum Robot via Tip Actuation and Steering

Machines
Continuum robots with outstanding compliance, dexterity, and lean bodies are successfully applied in medicine, aerospace engineering, the nuclear industry, rescue operations, construction, service, and manipulation.
Pan Zhou, Zhaoyi Lin, Lang Zhou, Haili Li, Michael Basin, Jiantao Yao   +5 more
doaj   +1 more source

TRIBOLOGICAL IMPLICATIONS OF THP MODULARIZATION [PDF]

Proceedings on Engineering Sciences, 2019
The aim of the paper is to highlight the advantages of the modularization of the femoral component of the Total Hip Prosthesis (THP), especially the tribological implications it presumes (fretting wear of the modular junctions, fatigue and corrosion by ...
Lucian CAPITANU, Liliana-Laura BADITA, Constantin TIGANESTEANU   +2 more
doaj   +1 more source

Micro-Doppler Clutter Removal Method Based on the Cancelation of Sliding STFT Spectrogram

Leida xuebao, 2022
Micro-motion clutter typically exhibits significant Doppler broadening, raises the noise floor, and annihilates weak targets, resulting in false alarms and missed detections.
Xianrong WAN, Deqiang XIE, Jianxin YI, Shibo HU, Yun TONG   +4 more
doaj   +1 more source

Seeing motion and apparent motion [PDF]

, 2014
In apparent motion experiments, participants are presented with what is in fact a succession of two brief stationary stimuli at two different locations, but they report an impression of movement. Philosophers have recently debated whether apparent motion
Hoerl, Christoph, Christoph Hoerl
core   +1 more source

Developmental programmes drive cellular plasticity, disease progression and therapy resistance in lung adenocarcinoma

Molecular Oncology, EarlyView.
This study shows that lung adenocarcinomas exploit developmental branching morphogenesis to acquire a therapy resistant basal‐like tumour cell state. This process was found to be regulated by combined TP53 loss‐of‐function and type‐I interferon signalling, identifying a novel axis for biomarker and therapeutic target discovery.
Kamila J Bienkowska, Stephany Gallardo, Nur S. Zainal, Leena Arora, Matthew Ellis, Maria‐Antoinette Lopez, Judith Austine, Sai Pittla, Serena J Chee, Aiman Alzetani, Emily C Shaw, Christian H Ottensmeier, Gareth J Thomas, Christopher J Hanley   +13 more
wiley   +1 more source

Laser Backscattering Analytical Model of Doppler Power Spectra about Convex Quadric Bodies of Revolution during Precession

Remote Sensing
In the realm of ballistic target analysis, micro-motion attributes, such as warhead precession, nutation, and decoy oscillations, play a pivotal role. This paper addresses these critical aspects by introducing an advanced analytical model for assessing ...
Yanhui Li, Hua Zhao, Ruochen Huang, Geng Zhang, Hangtian Zhou, Chenglin Han, Lu Bai   +6 more
doaj   +1 more source