Results 41 to 50 of about 3,144,647 (278)
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
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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
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IEEE Access, 2020 Aiming at the problem of micro-motion signal separation and micro-Doppler extraction of the precession target, a new method based on singular value decomposition (SVD) and joint approximate diagonalization of eigen-matrices (JADE) is proposed in this ...
Xuguang Xu, C. Feng, Sisan He
semanticscholar +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
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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 +13 more
wiley +1 more source
Remote SensingIn 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 +6 more
doaj +1 more source
MITF maintains genome stability in nonmelanocyte lineages
Molecular Oncology, EarlyView.MITF is essential for melanocyte survival and acts as an oncogene in 10%–20% of melanomas. We show that MITF depletion causes genome instability in nonmelanocytic cells, leading to LATS2‐mediated P53 activation, cell cycle arrest, and apoptosis. This study highlights the role of MITF as a genome maintenance factor beyond the melanocyte lineage. Created
Drifa H. Gudmundsdottir +13 more
wiley +1 more source
An Image Focusing Method for Sparsity-Driven Radar Imaging of Rotating Targets
Sensors, 2018 This paper presents a new image focusing algorithm for sparsity-driven radar imaging of rotating targets. In the general formulation of off-grid scatterers, the sparse reconstruction algorithms may result in blurred and low-contrast images due to ...
Ngoc Hung Nguyen +3 more
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BACTERIAL GROWTH AND MULTIPLICATION AS DISCLOSED BY MICRO MOTION PICTURES [PDF]
Journal of Experimental Medicine, 1934 Using a micro motion picture technique for making records, studies covering several thousand hours of observation have been made of the growth of a number of bacteria. On the basis of these experiments a discussion is offered of bacterial division and its influence on gross colony appearance, of different kinds of pleomorphism that have been observed ...
openaire +2 more sources