Results 11 to 20 of about 2,099,705 (77)

INVESTIGATIONS OF LONG-PERIOD DQ HERCULIS STARS.

, 1986
The magnetic rotator model has long been the favored explanation for coherent photometric modulations in the DQ Herculis class of cataclysmic variables. However, to date, all evidence supporting this model has been of the indirect variety.
PENNING, WILLIAM ROY.
core   +5 more sources

Chemical constituents and bioactivities of hops (Humulus lupulus L.) and their effects on beer‐related microorganisms

Food and Energy Security, Volume 11, Issue 2, May 2022., 2022
Abstract The female inflorescence of hops is traditionally used in the brewing industry to impart bitterness, aroma, flavour and longer shelf life to beer, where the bittering acids are the main compounds that enhance the quality of the beer. In recent years, a wide variety of bioactive compounds have been reported to be present in female flowers.
Shaokang Sun, Xiaochen Wang, Ai Yuan, Jianlin Liu, Zebin Li, Dongxiao Xie, Huimin Zhang, Wenqing Luo, Hengyuan Xu, Jinshang Liu, Cong Nie, Haojun Zhang   +11 more
wiley   +1 more source

Kepler K2 and TESS Observations of Two Magnetic Cataclysmic Variables: The New Asynchronous Polar SDSS J084617.11+245344.1 and Paloma

The Astronomical Journal, 2023
There have been relatively few published long-duration, uninterrupted light curves of magnetic cataclysmic variable stars in which the accreting white dwarf’s rotational frequency is slightly desynchronized from the binary orbital frequency.
Colin Littlefield, D. W. Hoard, Peter Garnavich, Paula Szkody, Paul A. Mason, Simone Scaringi, Krystian Ilkiewicz, Mark R. Kennedy, Saul A. Rappaport, Rahul Jayaraman   +9 more
doaj   +1 more source

SDSS J134441.83+204408.3: A Highly Asynchronous Short-period Magnetic Cataclysmic Variable with a 56 MG Field Strength

The Astrophysical Journal Letters, 2023
When the accreting white dwarf in a magnetic cataclysmic variable star (mCV) has a field strength in excess of 10 MG, it is expected to synchronize its rotational frequency to the binary orbit frequency, particularly at small binary separations, due to ...
Colin Littlefield, Paul A. Mason, Peter Garnavich, Paula Szkody, John Thorstensen, Simone Scaringi, Krystian Iłkiewicz, Mark R. Kennedy, Natalie Wells   +8 more
doaj   +1 more source

Identification of 1RXS J165424.6-433758 as a Polar Cataclysmic Variable

The Astrophysical Journal, 2023
We present the results of our X-ray, ultraviolet, and optical follow-up campaigns of 1RXS J165424.6-433758, an X-ray source detected with the Swift Deep Galactic Plane Survey.
B. O’Connor, J. Brink, D. A. H. Buckley, K. Mukai, C. Kouveliotou, E. Göğüş, S. B. Potter, P. Woudt, A. Lien, A. Levan, O. Kargaltsev, M. G. Baring, E. Bellm, S. B. Cenko, P. A. Evans, J. Granot, C. Hailey, F. Harrison, D. Hartmann, A. J. van der Horst, D. Huppenkothen, L. Kaper, J. A. Kennea, P. O. Slane, D. Stern, E. Troja, R. A. M. J. Wijers, G. Younes   +27 more
doaj   +1 more source

PTF1J2224+17: A short‐period, high‐field polar

Astronomische Nachrichten, Volume 341, Issue 4, Page 424-429, May 2020., 2020
Abstract We present time‐resolved photometry of the cataclysmic variable PTF1J2224+17 obtained during four nights in October 2018 and January 2019 from Inastars observatory. The object is variable on a period of 103.82 min. Archival Catalina Real‐Time Transient Survey (CRTS), Palomar Transient Factory, and Zwicky Transient Facility‐data show frequent ...
Axel D. Schwope, Bernd D. Thinius
wiley   +1 more source

Indirect imaging of AM Herculis-stars [PDF]

, 2005
AM Herculis stars (or 'polars') are close binaries consisting of a white dwarf with a strong magnetic field and a main sequence star (the 'secondary') which is losing mass to the white dwarf.
Staude, Andreas
core   +1 more source

Restoration of Florida scrub vegetation in an old field through 23 years after planting

Restoration Ecology, Volume 27, Issue 2, Page 320-332, March 2019., 2019
Florida scrub, a fire‐maintained, xeromorphic shrubland, hosts many rare and declining species, but most scrub habitat has been lost to development and agriculture. Formerly cultivated sites offer an opportunity to restore Florida scrub. In this 23‐year study, we test whether scrub species could be restored to an old field and whether scrub vegetation ...
Paul A. Schmalzer, Tammy E. Foster
wiley   +1 more source

Woody expansion facilitates liana expansion and affects physical structure in temperate coastal communities

Ecosphere, Volume 7, Issue 6, June 2016., 2016
Abstract Coastal ecosystems in general, and barrier islands in particular, offer unique opportunities to observe ecological patterns and processes in spatially and temporally compressed settings. Harsh abiotic conditions and frequent disturbances limit the number of resident species, and highly dynamic geomorphology may result in a space‐for‐time ...
Spencer N. Bissett, Julie C. Zinnert, Donald R. Young   +2 more
wiley   +1 more source

Small Molecules from Nature Targeting G‐Protein Coupled Cannabinoid Receptors: Potential Leads for Drug Discovery and Development

Evidence-Based Complementary and Alternative Medicine, Volume 2015, Issue 1, 2015., 2015
The cannabinoid molecules are derived from Cannabis sativa plant which acts on the cannabinoid receptors types 1 and 2 (CB1 and CB2) which have been explored as potential therapeutic targets for drug discovery and development. Currently, there are numerous cannabinoid based synthetic drugs used in clinical practice like the popular ones such as ...
Charu Sharma, Bassem Sadek, Sameer N. Goyal, Satyesh Sinha, Mohammad Amjad Kamal, Shreesh Ojha, Ki-Wan Oh   +6 more
wiley   +1 more source