Results 141 to 150 of about 5,043,235 (296)

Stellar Angular Diameters and Visual Surface Brightness -- II EARLY AND INTERMEDIATE SPECTRAL TYPES [PDF]

Monthly Notices of the Royal Astronomical Society, 1976
T. G. Barnes, D. S. Evans, S. B. Parsons
openaire   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

FEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova, Andrej Mirossay, Erik Sedlak   +2 more
wiley   +1 more source

THE ROLE OF MAGNETIC STELLAR WIND AND MASS TRANSFER IN CLOSE BINARIES OF THE EARLY SPECTRAL TYPE

Odessa Astronomical Publications, 2017
We suggest the results of calculations of mass transfer rate using orbital period changing and changing of orbital semi-major axis due to magnetic stellar Wind and mass transfer in close binaries of early spectral type.
openaire   +2 more sources

Classification of stellar spectral data using svm

, 2004
. In this paper a new technique is developed on stellar spectral classification. Because stellar spectral data sets are usually extremely noisy, wavelet de-noising method is proposed to reduce noise first.
Fei Xing, Ping Guo
core   +1 more source

Seeking Spectroscopic Binaries with Data-driven Models

The Astrophysical Journal
Data-driven stellar classification has a long and important history in astronomy, dating as far back as Annie Jump Cannon’s “by-eye” classifications of stars into spectral types, still used today.
Isabel Angelo, Erik Petigura, Megan Bedell   +2 more
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Absolute wavelength shifts - A new diagnostic for rapidly rotating stars

, 2004
Accuracies reached in space astrometry now permit. the accurate determination of astrometric radial velocities. without any use of spectroscopy. Knowing this true stellar motion, spectral shifts; intrinsic to stellar atmospheres can be identified, for ...
Dravins, Dainis,
core  

Final report on the STELLAR Delphi study: Future directions for TEL and TEL research: areas of tension, core research areas and grand challenge problems

, 2012
In this report on the STELLAR Delphi study, we present the results of the final global survey, that is the 4th STELLAR Delphi round, and illustrate the elaboration and dissemination of these results (5th STELLAR Delphi round).
Spada, Hans, Plesch, Christine, Wiedmann, Michael   +2 more
core   +2 more sources

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Diagnostic tool for stellar spectral type classification

Computational diagnostic tool for stellar spectral type classification. The tool will be accompanied by relevant publications / reports published in the project website.
openaire   +1 more source