Results 111 to 120 of about 17,300 (305)

Generating Tagged Micro‐ and Nanoparticles of Poly(ethylene furanoate) and Poly(ethylene terephthalate) as Reference Materials

Macromolecular Rapid Communications, EarlyView.
We successfully developed poly(ethylene terephthalate) (PET) and poly(ethylene furanoate) (PEF) nanoparticles and microparticles, covalently tagged with Alexa Fluor 633 or Alexa Fluor 647, using both mechanical and solvent‐based approaches. The particles displaying hydrodynamic diameters between 200 and 700 nm, exhibited long‐term colloidal stability ...
Redoy Gazi Shuvo, Andreas F. Thünemann, Zviadi Katcharava, Anja Marinow, Richard Hoppe, Georg Woltersdorf, Mengxue Du, René Androsch, Juliana Martins de Souza e Silva, Karsten Busse, Wolfgang H. Binder   +10 more
wiley   +1 more source

TIC 290061484: A Triply Eclipsing Triple System with the Shortest Known Outer Period of 24.5 Days

The Astrophysical Journal
We have discovered a triply eclipsing triple-star system, TIC 290061484, with the shortest known outer period, P _out , of only 24.5 days. This “eclipses” the previous record set by λ Tauri at 33.02 days, which held for 68 yr.
V. B. Kostov, S. A. Rappaport, T. Borkovits, B. P. Powell, R. Gagliano, M. Omohundro, I. B. Bíró, M. Moe, S. B. Howell, T. Mitnyan, C. A. Clark, M. H. Kristiansen, I. A. Terentev, H. M. Schwengeler, A. Pál, A. Vanderburg   +15 more
doaj   +1 more source

The Mass–Temperature Relation for B and Early A Stars Based on International Ultraviolet Explorer Spectra of Detached Eclipsing Binaries [PDF]

, 2023
Nancy Remage Evans, Mckenzie G. Ferrari, Joanna Kuraszkiewicz, Steven M. Silverberg, Joy S. Nichols, Guillermo Torres, Makenzi Fischbach   +6 more
openalex   +1 more source

Roberts of Lovedale and Eclipsing Binary Stars [PDF]

International Astronomical Union Colloquium, 1988
Alexander William Roberts, a great humanitarian and teacher in South Africa, was also a luminary in the astronomical world. This paper discusses his work on variable stars and touches briefly on his career in other areas. Born and educated in Scotland, Roberts migrated to South Africa in 1883, at age 25, to teach at the Native College at Lovedale.
openaire   +1 more source

Terrain Classification for Planetary Rovers Using Wireless In‐Wheel Sensor Modules and Machine Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Safe and reliable mobility over different kinds of ground is important for planetary rovers on space missions. Since terrain changes might affect the mobility of the rover, energy consumption, and safety, detecting the type of ground in real‐time is vital.
Md Masrul Khan, Sultan Shaharea, Manseeb M. Mannaf, Shihab Ahemed, Fahim Islam Anik, Md Jarir Hossain, Helal An Nahiyan, Sourav Karmaker   +7 more
wiley   +1 more source

Precision Timing of Eclipsing Binaries from TESS Full Frame Images: Method and Performance

The Astrophysical Journal
Several hundreds of thousands of eclipsing binaries (EBs) are expected to be detected in the Transiting Exoplanet Survey Satellite (TESS) full frame images (FFIs).
Frédéric Marcadon, Andrej Prša
doaj   +1 more source

Eclipsing high-mass binary stars [PDF]

, 2014
Die Masse eines Sterns ist der maßgebende Parameter, der seine gesamte Entwicklung bestimmt. Massen von O-Sternen sind von besonderer Bedeutung, da sie die Hauptquellen von UV-Strahlung in der Galaxis sind und einen Großteil der schweren Elemente erzeugen. Damit spielen sie eine Schlüsselrolle in der Entwicklung unserer Galaxis.
openaire   +1 more source

When do firms learn by hiring? How complexity moderates the value of new knowledge

Strategic Management Journal, EarlyView.
Abstract Research Summary Organizations often hire employees hoping to acquire new knowledge. While the literature has paid considerable attention to the role of the characteristics of the source of knowledge, the recipient firm, and the knowledge being transferred, it has largely overlooked those of the knowledge being replaced.
Dong Nghi Pham, Luis A. Rios, Maciej Workiewicz   +2 more
wiley   +1 more source

Engineering Iridium–Ruthenium Dual‐Atomic Active Sites on Redox‐Active Covalent Organic Frameworks for Boosted Overall Water Splitting

Small, EarlyView.
Atomically dispersed IrRu dual‐atomic sites are anchored on donor‐acceptor‐based redox‐active COF for overall water electrolysis, and the active sites separation mechanism induced by giant multifunctional active‐site synergistic enhancement (MASE) effect was explored by the operando spectroscopy and DFT calculations.
Lei Ran, Yifan Xu, Yue Zhang, Jinsong Zhou, Mingzi Sun, Yingguang Zhang, Bei Ran, Chengxu Zhang, Jue Hu, Bolong Huang, Michael K. H. Leung   +10 more
wiley   +1 more source

The Discovery of Two Quadruple Star Systems with the Second and Third Shortest Outer Periods

The Astrophysical Journal
We present the discovery of two quadruple star systems—TIC 285853156 and TIC 392229331—each consisting of two bound eclipsing binary stars. Among the most compact quadruples known, TIC 392229331 and TIC 285853156 have the second and third shortest outer ...
Brian P. Powell, Guillermo Torres, Veselin B. Kostov, Tamás Borkovits, Saul A. Rappaport, Maxwell Moe, David W. Latham, Thomas L. Jacobs, Robert Gagliano, Martti H. K. Kristiansen, Mark Omohundro, Hans M. Schwengeler, Daryll M. LaCourse, Ivan A. Terentev, Allan R. Schmitt   +14 more
doaj   +1 more source