Results 61 to 70 of about 248,213 (282)

A BODIPY‐Containing Covalent Organic Framework as a Highly Porous Photosensitizer for Environmental Remediation and Pollutants Adsorption

open access: yesAngewandte Chemie, EarlyView.
Borondipyrromethene (BODIPY) chromophores have been directly implemented into the highly porous covalent organic framework BDP‐TFP‐COF which crystallizes in AA stacking mode with hbc topology. The versatility of multifunctional BODIPY‐COFs is highlighted in various applications ranging from dual‐mode fluorescence sensing to pollutants removal from ...
Roberto Sánchez‐Naya, Florian Beuerle
wiley   +2 more sources

Photometric Observations of Eccentric Accretion in Algol-type Binary Stars [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
Some Algol-type interacting binary stars exhibit strange photometric variations that can be phase-dependent and/or secular. This paper discusses the possibility of explaining these observed variations as resulting from an accretion structure eclipsing ...
Phillip A. Reed
doaj   +1 more source

Blocking Orbital π‐Conjugation to Boost Spin‐Orbit Coupling in Carbonyl‐Embedded Polycyclic Heteroaromatic Emitters

open access: yesAngewandte Chemie, EarlyView.
An effective approach, i.e., blocking orbital π‐conjugation via either molecular‐structure distortion or meta‐arrangement of chemical substituents is proposed, to boost spin‐orbit couplings (SOC) in carbonyl‐embedded polycyclic heteroatomic emitters.
Rajat Walia   +7 more
wiley   +2 more sources

New Light Curve Analysis for Large Numbers of Eclipsing Binaries I. Detached and Semi-Detached Binaries [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
Several survey observations have produced light curves of more than five thousand eclipsing binaries for last 15 years. Future missions such as the Large Synoptic Survey Telescope (LSST), the Panoramic Survey Telescope and Rapid Response System (Pan ...
Young-Woon Kang
doaj   +1 more source

Variable stars in the open cluster NGC 2141 [PDF]

open access: yes, 2014
We report the results of a search for variable stars in the open cluster NGC 2141. Ten variable stars are detected, among which nine are new variable stars and they are classified as three short period W UMa type eclipsing binaries, two EA type eclipsing binaries, one EB type eclipsing binary, one very short period RS CVn type eclipsing binary, one d ...
arxiv   +1 more source

A Catalog of Short Period Spectroscopic and Eclipsing Binaries Identified from the LAMOST & PTF Surveys [PDF]

open access: yes, 2020
Binaries play key roles in determining stellar parameters and exploring stellar evolution models. We build a catalog of 88 eclipsing binaries with spectroscopic information, taking advantage of observations from both the Large Sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) and the Palomar Transient Factory (PTF) surveys.
arxiv   +1 more source

FX UMa: A New Heartbeat Binary System with Linear and Nonlinear Tidal Oscillations and δ Sct Pulsations

open access: yesThe Astronomical Journal, 2023
We present a detailed analysis of an eclipsing double-lined binary FX UMa based on TESS photometry and newly acquired spectroscopic observations. The radial velocities and atmospheric parameters for each component star are obtained from the SONG high ...
Kun Wang   +5 more
doaj   +1 more source

Detecting circumbinary planets using eclipse timing of binary stars - numerical simulations [PDF]

open access: yes, 2010
The presence of a body in an orbit around a close eclipsing binary star manifests itself through the light time effect influencing the observed times of eclipses as the close binary and the circumbinary companion both move around the common centre of mass.
arxiv   +1 more source

KEPLER ECLIPSING BINARY STARS. III. CLASSIFICATION OF KEPLER ECLIPSING BINARY LIGHT CURVES WITH LOCALLY LINEAR EMBEDDING [PDF]

open access: yes, 2012
We present an automated classification of 2165 Kepler eclipsing binary (EB) light curves that accompanied the second Kepler data release. The light curves are classified using locally linear embedding, a general nonlinear dimensionality reduction tool ...
G. Matijevič   +5 more
semanticscholar   +1 more source

Plasma lipidomic and metabolomic profiles in high‐grade glioma patients before and after 72‐h presurgery water‐only fasting

open access: yesMolecular Oncology, EarlyView.
Presurgery 72‐h fasting in GB patients leads to adaptations of plasma lipids and polar metabolites. Fasting reduces lysophosphatidylcholines and increases free fatty acids, shifts triglycerides toward long‐chain TGs and increases branched‐chain amino acids, alpha aminobutyric acid, and uric acid.
Iris Divé   +7 more
wiley   +1 more source

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