Results 101 to 110 of about 363,457 (364)

Theoretical Transmission Spectra during Extrasolar Giant Planet Transits [PDF]

, 1999
The recent transit observation of HD 209458 b—an extrasolar planet orbiting a Sun-like star—confirmed that it is a gas giant and determined that its orbital inclination is 85°. This inclination makes possible investigations of the planet atmosphere.
S. Seager, D. I. F. A. Study, Princeton, Harvard University   +3 more
semanticscholar   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

TRANSITS AND OCCULTATIONS OF AN EARTH-SIZED PLANET IN AN 8.5 hr ORBIT [PDF]

, 2013
We report the discovery of an Earth-sized planet (1.16 ± 0.19 R⊕) in an 8.5 hr orbit around a late G-type star (KIC 8435766, Kepler-xx). The object was identified in a search for short-period planets in the Kepler database and confirmed to be a ...
R. Sanchis-Ojeda, S. Rappaport, J. Winn, A. Levine, Michael C. Kotson, D. Latham, L. Buchhave   +6 more
semanticscholar   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Validating the Orbital Periods of the Coolest TESS Planet Candidates

The Astronomical Journal
When an exoplanet passes in front of its host star, the resulting eclipse causes an observable decrease in stellar flux, and when multiple such transits are detected, the orbital period of the exoplanet can be determined. Over the past seven years NASA’s
Dillon J. Bass, Daniel C. Fabrycky
doaj   +1 more source

Review of the AC Overhead Wires, the DC Third Rail and the DC Fourth Rail Transit Lines: Issues and Challenges

IEEE Access, 2020
This paper focuses on transits available around the world. AC voltage transits and DC voltage transit are reviewed and compared. Emphasis is given to differences, advantages and disadvantages of voltage supplies and traction types.
Farah Asyikin Abd Rahman, Mohd Zainal Abidin Ab Kadir, Miszaina Osman, Ungku Anisa Ungku Amirulddin   +3 more
doaj   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Single Transit Detection in Kepler with Machine Learning and Onboard Spacecraft Diagnostics

The Astronomical Journal
Exoplanet discovery at long orbital periods requires reliably detecting individual transits without additional information about the system. Common techniques, like phase folding of light curves and periodogram analysis of radial velocity data, are more ...
Matthew T. Hansen, Jason A. Dittmann
doaj   +1 more source

Observations of planetary transits at the University Observatory Jena

EPJ Web of Conferences, 2011
We report on observations of transit events of the transiting planets XO-1b, TrES-1 and TrES-2 with a 25 cm telescope of the University Observatory Jena.
Rammo W., Reithe A., Tetzlaff N., Moualla M., Marka C., Ginski Ch., Hohle M.M., Koeltzsch A., Vaňko M., Eisenbeiss T., Roell T., Schmidt T.O.B., Mugrauer M., Raetz S., Fiedler S., Koppenhoefer J., Neuhäuser R.   +16 more
doaj   +1 more source

MEASURING THE SOLAR RADIUS FROM SPACE DURING THE 2003 AND 2006 MERCURY TRANSITS [PDF]

, 2012
The Michelson Doppler Imager (MDI) aboard the Solar and Heliospheric Observatory observed the transits of Mercury on 2003 May 7 and 2006 November 8. Contact times between Mercury and the solar limb have been used since the seventeenth century to derive ...
M. Emilio, J. R. Kuhn, R. Bush, I. F. Scholl   +3 more
semanticscholar   +1 more source