Results 71 to 80 of about 149,506 (246)

On the Limitations of the Anomalous Microwave Emission Emissivity

Advances in Astronomy, 2012
Many studies of anomalous microwave emission (AME) have computed an AME emissivity to compare the strength of the AME detected in different regions. Such a value is usually defined as the ratio between the intensity of the AME at 1 cm and the thermal ...
Christopher T. Tibbs, Roberta Paladini, Clive Dickinson   +2 more
doaj   +1 more source

Synthesis of Core–Shell Te@Se Quantum Dots and Their Broadband Photodetector Performance in Low Concentration Electrolytes

Laser &Photonics Reviews, EarlyView.
Te@Se core–shell heterojunction quantum dots (QDs) are synthesized by a two‐step strategy via combining liquid‐phase exfoliation and epitaxial growth. As active materials in photoelectrochemical photodetectors, Te@Se QDs exhibit excellent photo‐response performance in low‐concentration electrolytes and deionized water.
Yiming Zhao, Artem V. Kuklin, Jiahui Hou, Mingqi He, Lyudmila V. Begunovich, Han Zhang, Ying Li, Hans Ågren, Lingfeng Gao   +8 more
wiley   +1 more source

Shadow-based Framework for Estimating Transition Disk Geometries

The Astrophysical Journal
Some transition disks host misaligned inner disks with radii of several astronomical units. Understanding the geometric and physical properties of these misaligned disks is essential for advancing terrestrial planet formation models.
Ryuta Orihara, Munetake Momose
doaj   +1 more source

Tailoring the Melting and Glass Transition Behavior of Zeolitic Imidazolate Frameworks via Ammonium Halide Salts

Small, EarlyView.
Ammonium halide salts serve as inorganic modifiers that lower the melting and glass transition temperatures of zeolitic imidazolate frameworks, enabling centimeter‐scale hybrid glasses and melt processing of otherwise unmeltable ZIF‐8. In situ imaging and pair distribution function analysis reveal salt infiltration, Zn─N bond disruption, and Zn–halide ...
Fengming Cao, Søren S. Sørensen, Anders K. R. Christensen, Xuan Ge, Martin A. Karlsen, Giulio Monaco, Lothar Wondraczek, Morten M. Smedskjaer   +7 more
wiley   +1 more source

Advanced infrared astronomy [PDF]

This task supports the application of infrared heterodyne and Fourier transform spectroscopy to ultra-high resolution studies of molecular constituents of planetary astomspheres and cometary comae.
Deming, Drake, Kostiuk, T., Mumma, M.
core   +1 more source

The use of thermal imaging to assess heat generation during dental implant bed preparation in the presence of a surgical guide with an incorporated coolant channel

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluates the thermodynamic benefits of including an irrigation fluid channel in the design of surgical guides used for dental implant site drilling. Materials and Methods Two types of guides suitable for hosting artificial bone plates that mimic the mechanical properties of human alveolar bone were designed: a classical ...
Robert‐Angelo Tuce, Vasile Pupăzan, Monica Neagu, Stelian Arjoca, Adrian Neagu   +4 more
wiley   +1 more source

GREAT: the SOFIA high-frequency heterodyne instrument

, 2012
We describe the design and construction of GREAT, the German REceiver for Astronomy at Terahertz frequencies operated on the Stratospheric Observatory for Infrared Astronomy (SOFIA).
Becklin, de Graauw, Guan, H. W. Hübers, Horn, J. Stutzki, Klein, Klein, P. Hartogh, Pilbratt, Pütz, R. Güsten, Röser, S. Heyminck, U. U. Graf, Villanueva, Wagner-Gentner, Young   +17 more
core   +1 more source

CI chondrite Oued Chebeika 002 links asteroids Bennu and Ryugu to common parent body

Meteoritics &Planetary Science, EarlyView.
Abstract CI chondrites are a compositionally primitive group of meteorites that have undergone extensive aqueous alteration, providing insights into the evolution of primitive planetesimals. Oued Chebeika 002 is the most pristine CI chondrite to date.
Megan Broussard, Katharina Lodders, Paul K. Carpenter, Piers Koefoed, Karen Ziegler, Kunihiko Nishiizumi, Marc W. Caffee, Laurence A. J. Garvie, Ryan C. Ogliore, Anthony J. Irving, Bradley L. Jolliff, Kun Wang   +11 more
wiley   +1 more source

Ground based infrared astronomy [PDF]

Infrared spectroscopic instrumentation has been developed for ground-based measurements of astrophysical objects in the intermediate infrared. A conventional Michelson interferometer is limited for astronomical applications in the intermediate infrared ...
Jennings, D. E.
core   +1 more source

Detection of the Sgr A* activity at 3.8 and 4.8 microns with NACO

, 2004
L'-band (lambda=3.8 microns) and M'-band (lambda=4.8 microns) observations of the Galactic Center region, performed in 2003 at VLT (ESO) with the adaptive optics imager NACO, have lead to the detection of an infrared counterpart of the radio source Sgr A*
Balick, Blum, Bower, Clénet, Clénet, Cuadra, D. Gratadour, D. Rouan, DePoy, Diolaiti, E. Gendron, Eisenhauer, F. Lacombe, Forrest, Genzel, Genzel, Ghez, Ghez, Lenzen, Markoff, Moneti, Nayakshin, Ott, P. Léna, R. Genzel, R. Schödel, Reid, Rousset, Schödel, Simons, T. Ott, Tollestrup, Y. Clénet, Yuan, Yuan, Yuan   +35 more
core   +1 more source