Results 141 to 150 of about 7,393,464 (385)

The Kepler Cluster Study: Stellar Rotation in NGC6811

, 2011
We present rotation periods for 71 single dwarf members of the open cluster NGC6811 determined using photometry from NASA's Kepler Mission. The results are the first from The Kepler Cluster Study which combine Kepler's photometry with ground-based ...
Barnes, Sydney A., Basri, Gibor, Batalha, Natalie, Borucki, William J., Bryson, Stephen T., Buchhave, Lars A., Clarke, Bruce D., Dupree, Andrea K., Furesz, Gabor, Haas, Michael R., Janes, Kenneth A., Jenkins, Jon, Koch, David G., Latham, David W., Meibom, Søren, Quintana, Elisa V., Szentgyorgyi, Andrew H., Twicken, Joseph D., Van Cleve, Jeffrey, Walkowicz, Lucianne M.   +19 more
core   +1 more source

TESS Asteroseismology of β Hydri: A Subgiant with a Born-again Dynamo

The Astrophysical Journal
The solar-type subgiant β Hyi has long been studied as an old analog of the Sun. Although the rotation period has never been measured directly, it was estimated to be near 27 days.
Travis S. Metcalfe, Jennifer L. van Saders, Daniel Huber, Derek Buzasi, Rafael A. García, Keivan G. Stassun, Sarbani Basu, Sylvain N. Breton, Zachary R. Claytor, Enrico Corsaro, Martin B. Nielsen, J. M. Joel Ong, Nicholas Saunders, Amalie Stokholm, Timothy R. Bedding   +14 more
doaj   +1 more source

High‐Concentration Mesogen‐Assisted Exfoliation of Low‐Dimensional Nanomaterials for Achieving Ultralow‐Temperature Actuations of Liquid Crystal Elastomers

Advanced Functional Materials, EarlyView.
Most matter is nominally frozen in the polar regions or space, and liquid crystal materials are no exception. Consequently, soft actuators, including liquid crystal elastomers (LCEs), are inoperative under such extreme cold in response to stimuli, as their motion relies on mechanical deformation.
Hyeonseong Kim, Yeon Gyeong Ha, Dong‐Gue Kang, Chinedum O. Osuji, Dae Seok Kim, Changyeon Lee   +5 more
wiley   +1 more source

Asymmetry and evolution over a one-year period of the upward rotation of the scapula in youth baseball pitchers

International Biomechanics, 2018
The pitching motion is an asymmetric action by which coordination of scapular rotation in the dominant arm might be affected in time and in comparison with the non-dominant arm.
Erik van der Graaff, Bengt Kom, Femke van Dis, Xavier Gasparutto, Marco Hoozemans, Dirkjan Veeger   +5 more
doaj   +1 more source

THE PHOTOMETRIC MODEL OF ARTIFICIAL SATELLITE AJISAI AND DETERMINATION OF ITS ROTATION PERIOD

Odessa Astronomical Publications, 2012
Photometry is used to make remote diagnostics of an artificial satellite's motion around its centre of mass. Experimental satellite Ajisai was designed to explore the effects of the space factors, such as gravitation and magnetic fields, solar radiation ...
E. Korobeynikova, N. Koshkin, S. Shakun, N. Burlak, S. Melikyants, S. Terpan, S. Strakhova   +6 more
doaj   +1 more source

Cryo‐EM of Rationally Designed Photosystem I Nanoassembly on Graphene Validates Orientation‐Driven Enhancement of Photocatalytic Performance

Advanced Functional Materials, EarlyView.
The first cryo‐EM visualization and quantification of oriented Photosystem I (PSI) on single‐layer graphene is reported. Domain‐specific covalent anchoring of PSI, with the reducing side of the biophotocatalyst toward graphene, promotes three‐fold higher anodic photocurrent generation compared to a randomly physisorbed counterpart. This approach allows
Miriam Izzo, Margot Jacquet, Tomasz Góral, Marcin Strawski, Takayuki Fujiwara, Shin‐ya Miyagishima, Joanna Kargul   +6 more
wiley   +1 more source

Rotation periods and seismic ages of KOIs - comparison with stars without detected planets from Kepler observations

, 2015
One of the most difficult properties to derive for stars is their age. For cool main-sequence stars, gyrochronology relations can be used to infer stellar ages from measured rotation pe- riods and HR Diagram positions.
Ceillier, T., Creevey, O., Garcia, R. A., Mathis, S., Mathur, S., Metcalfe, T. S., Pinsonneault, M. H., Salabert, D., Tayar, J., van Saders, J.   +9 more
core   +1 more source

Pengaruh Rotasi, Reputasi dan Spesialisasi Auditor terhadap Kualitas Audit (Studi Empiris pada Perusahaan Manufaktur yang Listed di BEI)

Kompartemen: Jurnal Ilmiah Akuntansi, 2017
The study aimed to empirically examine the effect of auditor rotation, audit reputation, and audit specialization on audit quality. The population of data is the entire manufacturing companies listed on the Indonesia stock Exchange in the period 2012 to ...
Adib Azinudin Nizar
doaj   +1 more source

Boosting the Energy Density of “Anode‐Free” Lithium Metal Batteries via Electrospun Polymeric Scaffolds

Advanced Functional Materials, EarlyView.
While host structures are known to enhance the reversibility and safety of lithium metal deposition, their additional volume and weight often decrease the battery's energy density and specific energy. By combining a lightweight and porous scaffold of electrospun polymer with a thinner separator, this article demonstrates a simultaneous improvement of ...
Lennart Wichmann, Bärbel Tengen, Peng Yan, Peter Lennartz, Isidora Cekic‐Laskovic, Martin Winter, Gunther Brunklaus   +6 more
wiley   +1 more source

Exploring the $P_{cyc}$ vs $P_{rot}$ relation with flux transport dynamo models of solar-like stars

, 2009
Aims: To understand stellar magnetism and to test the validity of the Babcock-Leighton flux transport mean field dynamo models with stellar activity observations Methods: 2-D mean field dynamo models at various rotation rates are computed with the STELEM
Brown, B. P., Brun, A. S., Jouve, L.
core   +3 more sources