Primary stability of cementless threaded acetabular cups at first implantation and in the case of revision regarding micromotions as indicators [PDF]
, 2012 The primary stability of cementless total hip endoprosthesis is of vital importance for proximate, long-term osteointegration. The extent of micromotions between implant and acetabulum is an indicator of primary stability.
Buerkner, Andreas +6 more
core +1 more source
Envelope Correction of Micro-Motion Targets Based on Multi-Layer Perceptron During THz-ISAR Sensing
IEEE Access, 2019 Translational compensation is one of the key problems in parameter estimation of moving targets and radar imaging, and envelope correction is the basis of translation compensation.
Qi Yang +5 more
doaj +1 more source
Decomposing of lubricating oil caused the blackening wear of porous polyimide—Or is it?
FrictionIn 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 +6 more
doaj +1 more source
Preparation and properties of sandwich type density layered porous polyimide materials
Cailiao gongchengPorous 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 +7 more
doaj +1 more source
Bragg spectroscopy with an accelerating Bose-Einstein condensate
, 2003 We present the results of Bragg spectroscopy performed on an accelerating Bose-Einstein condensate. The Bose condensate undergoes circular micro-motion in a magnetic TOP trap and the effect of this motion on the Bragg spectrum is analyzed.
A. C. Wilson +18 more
core +1 more source
Ultra-Long, Minor-Diameter, Untethered Growing Continuum Robot via Tip Actuation and Steering
MachinesContinuum 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 +5 more
doaj +1 more source
Solitary-wave description of condensate micro-motion in a time-averaged orbiting potential trap
, 2004 We present a detailed theoretical analysis of micro-motion in a time-averaged orbiting potential trap. Our treatment is based on the Gross-Pitaevskii equation, with the full time dependent behaviour of the trap systematically approximated to reduce the ...
C. W. Gardiner +4 more
core +1 more source
Sliding-mode control of a flexure based mechanism using piezoelectric actuators [PDF]
, 2012 The position control of designed 3 PRR flexure based mechanism is examined in this paper. The aims of the work are to eliminate the parasitic motions of the stage, misalignments of the actuators, errors of manufacturing and hysteresis of the system by ...
Acer, Merve +2 more
core +3 more sources
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 +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 +4 more
doaj +1 more source