Results 51 to 60 of about 505,776 (261)
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
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Frontiers in Rehabilitation Sciences, 2022 ObjectiveOptimal wrist/hand function facilitates the performance of activities of daily living (ADL), which are associated with independent living and increased quality of life.
Alejandra Aranceta-Garza +2 more
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pH‐mediated activation of the lysosomal arginine sensor SLC38A9
FEBS Letters, EarlyView.Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
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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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Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014 The frictional modelling literature is reviewed, and it is demonstrated that unrealistic drift results when the shape coefficient is 1.0 for the LuGre and the integral friction models.
Junhong YANG, Andrew PLUMMER, Yong XUE
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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 +3 more
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Motion control: An emergent technology
Control Engineering Practice, 1992 Abstract The most relevant aspects in designing a device for the control of a mechanical system are outlined. The peculiarities in the modelling of the load are first indicated. Subsequently, the features of the converter motor unit used for generating the torque are examined.
openaire +1 more source
Biophysical approaches for studying viral entry
FEBS Letters, EarlyView.Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
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Sensors, 2018 Motion sensors such as MEMS gyroscopes and accelerometers are characterized by a small size, light weight, high sensitivity, and low cost. They are used in an increasing number of applications. However, they are easily influenced by environmental effects
Jiaying Du +2 more
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Frontiers in Bioengineering and Biotechnology, 2020 To understand the organization and efficiency of biological movement, it is important to evaluate the energy requirements on the level of individual muscles.
Daniel F. B. Haeufle +10 more
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