Results 41 to 50 of about 2,517,805 (293)

Health Monitoring on the Spacecraft Bearings in High-Speed Rotating Systems by Using the Clustering Fusion of Normal Acoustic Parameters

Applied Sciences, 2019
The rolling bearings in moment wheel assemblies (MWAs) or control moment gyros (CMGs) are not only the core components in spacecrafts but also prone to failure.
Dengyun Wu, Hong Wang, Hongxing Liu, Tian He, Tao Xie   +4 more
doaj   +1 more source

Rotation- and temperature-dependence of stellar latitudinal differential rotation

, 2005
More than 600 high resolution spectra of stars with spectral type F and later were obtained in order to search for signatures of differential rotation in line profiles.
Reiners, Ansgar
core   +1 more source

A Fault Diagnosis Method for Satellite Flywheel Bearings Based on 3D Correlation Dimension Clustering Technology

IEEE Access, 2018
Flywheel bearing is a key mechanical part of a satellite. Its health plays an important role in the fatigue life of the satellite. However, it is rather difficult to diagnose the health state of the bearings due to the complex satellite system.
Changrui Chen, Tian He, Dengyun Wu, Qiang Pan, Hong Wang, Xiaofeng Liu   +5 more
doaj   +1 more source

Gentrificación no es un nombre de señora: un proyecto de Left Hand Rotation [PDF]

, 2013
Left Hand Rotation es un colectivo artístico que desarrolla proyectos experimentales en múltiples formatos y soportes, como vídeo, instalaciones, intervenciones en el espacio público, etc. El proyecto/taller Gentrificación no es un nombre de señora surge
Left Hand Rotation
core   +1 more source

The Thomas rotation

, 2001
We review why the Thomas rotation is a crucial facet of special relativity, that is just as fundamental, and just as "unintuitive" and "paradoxical", as such traditional effects as length contraction, time dilation, and the ambiguity of simultaneity.
Costella, John P., McKellar, Bruce H. J., Rawlinson, Andrew A., Stephenson Jr, Gerard J.   +3 more
core   +1 more source

Fork rotation and DNA precatenation are restricted during DNA replication to prevent chromosomal instability [PDF]

, 2015
Faithful genome duplication and inheritance require the complete resolution of all intertwines within the parental DNA duplex. This is achieved by topoisomerase action ahead of the replication fork or by fork rotation and subsequent resolution of the DNA
Anna L. Chambers, Hiasa, Jessica A. Downs, Jonathan Baxter, Sahar Mansoubi, Stephanie A. Schalbetter   +5 more
core   +3 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

How Good a Clock is Rotation? The Stellar Rotation-Mass-Age Relationship for Old Field Stars

, 2013
The rotation-mass-age relationship offers a promising avenue for measuring the ages of field stars, assuming the attendant uncertainties to this technique can be well characterized.
Agüeros, Allain, Alphenaar, Andronov, Barkhatova, Barnes, Barnes, Barnes, Barnes, Basri, Basri, Beck, Bouvier, Brown, Chaplin, Claver, Courtney R. Epstein, Denissenkov, DeWarf, Durney, Glushkova, Gorshanov, Guenther, Gáspár, Hartman, Hartman, Hartman, Henderson, Herbst, Irwin, Janes, Jay, Jester, Jianke, Keppens, Kiraga, Kjeldsen, Krishnamurthi, Krishnamurthi, Lachaume, Lindoff, Luck, Lustig, Mamajek, Marc H. Pinsonneault, Matson, Meibom, Meibom, Meibom, Mermilliod, Meys, Morel, Neuforge-Verheecke, Perryman, Perryman, Pinsonneault, Pinsonneault, Rebull, Reiners, Sanders, Schou, Schwarzenberg-Czerny, Sills, Spada, Stepien, Söderhjelm, Tinker, van Altena, van Leeuwen, van Leeuwen, van Saders, Wright   +71 more
core   +1 more source

Good Rotations [PDF]

Journal of Computational Physics, 1998
24 pages, 3 ...
Hénon, M., Petit, J.-M.
openaire   +3 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source