Results 41 to 50 of about 373 (258)

Stellar Occultations by Trans-Neptunian Object Satellites: Predictions and Observations

The Planetary Science Journal
With the great success of stellar occultations in probing trans-Neptunian objects (TNOs), these observations have become ubiquitous, leading to significant advances in our knowledge of TNOs. As stellar occultation predictions have improved, it has become
Flavia L. Rommel, Benjamin Proudfoot, José L. Ortiz, Nicolás Morales, José María Gómez-Limón, Bryan J. Holler, Darin Ragozzine, Toni Santana-Ros, Pablo Santos-Sanz, Estela Fernández-Valenzuela, Francisco J. Aceituno   +10 more
doaj   +1 more source

Study of atmospheres in the solar system, from stellar occultation or planetary transit

Comptes Rendus. Physique, 2022
Stellar occultations and transits occur when a planetary body passes in front of a star (including our Sun). For objects with an atmosphere, refraction plays an essential role to explain the drops of flux and the aureoles observed during these events ...
Sicardy, Bruno
doaj   +1 more source

Effects of Mg on Microstructure and Solidification of a Hypereutectic Zn–8 wt.%Al Alloy

Advanced Engineering Materials, EarlyView.
An appreciable set of results involving thermal data, microstructure, chemical composition, and microstructural growth laws is reported for ZnAlMg alloys. Such results demonstrate that ZnAlMg alloys have high potential for applications in automotive self‐lubricating components, batteries, and electrical systems.
Raí B. de Sousa, Jeverton L. Paixão, Daylla S. Silva, Bruno S. Sobral, Mucio D. de Medeiros, José E. Spinelli, Bismarck L. Silva   +6 more
wiley   +1 more source

Milliarcsecond Astrometry for the Galilean Moons Using Stellar Occultations

The Astronomical Journal, 2022
Abstract A stellar occultation occurs when a Solar System object passes in front of a star for an observer. This technique allows the sizes and shapes of the occulting body to be determined with kilometer precision. In addition, this technique constrains the occulting body’s positions, albedos, densities, and so on. In the context of the
B. E. Morgado, A. R. Gomes-Júnior, F. Braga-Ribas, R. Vieira-Martins, J. Desmars, V. Lainey, E. D'Aversa, David Dunham, Jason M. Moore, Kevin Baillié, D. Herald, M. Assafin, B. Sicardy, S. Aoki, J. Bardecker, John M. T. Barton, T. Blank, David E. Bruns, Norman Carlson, R. W. Carlson, Kevin Cobble, J. B. Dunham, D. Eisfeldt, M. Emílio, C. Jacques, T. C. Hinse, Yoonyoung Kim, M. Malacarne, P. D. Maley, A. Maury, E. Meza, Fabrizio Oliva, G. S. Orton, C. L. Pereira, Michael Person, C. Plainaki, R. Sfair, G. Sindoni, M. Smith, E. Sussenbach, Paula Stuart, J. Vrolijk, O. C. Winter   +42 more
openaire   +4 more sources

Anticorrosive Performance of Smart Epoxy Coatings With Poly(urea‐formaldehyde) Microcapsules Filled With 5‐Ethylidene‐2‐norbornene

Advanced Engineering Materials, EarlyView.
PUF/ENB microcapsules were synthesized based on a sequential factorial design and incorporated into an epoxy matrix. Their anticorrosive action, associated with the self‐healing mechanism, demonstrated that the addition of microcapsules to the coating improved anticorrosive performance compared to pure epoxy coatings, particularly when the encapsulate ...
Vandicleya Alves Moreira, Maria Paula de Carvalho Freire, Ygor Matheus Pereira de Paula, Ana Leticia Santos, Alice da Costa Silva, Nicolau Apoena Castro, Maria Carolina Burgos Costa   +6 more
wiley   +1 more source

First climatology of polar mesospheric clouds from GOMOS/ENVISAT stellar occultation instrument [PDF]

Atmospheric Chemistry and Physics, 2010
GOMOS (Global Ozone Monitoring by Occultation of Stars), on board the European platform ENVISAT launched in 2002, is a stellar occultation instrument combining four spectrometers and two fast photometers which measure light at 1 kHz sampling rate in the ...
K. Pérot, A. Hauchecorne, F. Montmessin, J.-L. Bertaux, L. Blanot, F. Dalaudier, D. Fussen, E. Kyrölä   +7 more
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Effect of Calendering and Surface Treatment on the Thermochromic Response of Cholesteric Liquid Crystals on PET Nonwovens

Advanced Engineering Materials, EarlyView.
This study explores the influences of calendering and surface treatment during direct ink writing (DIW) of thermochromic cholesteric liquid crystal (CLC) on PET nonwovens. For the PVA‐coated nonwovens, calendering reduces pore size leading to reduced ink absorption and enhanced spreading. The NeverWet‐coated nonwovens improve thermochromic responses by
Sreenivasan Sreenivasan Narayanan, Lineth Pérez Monsalve, Christina Tang, Hong Zhao   +3 more
wiley   +1 more source

Constraints on the Atmospheric Composition of 2002 XV93 from JWST Spectroscopy

The Astrophysical Journal Letters
The recent detection of an atmosphere surrounding the trans-Neptunian object (TNO) 2002 XV _93 from stellar occultation measurements has challenged the longstanding view that only the largest TNOs can sustain an atmosphere.
Ian Wong, Silvia Protopapa, Emmanuel Lellouch   +2 more
doaj   +1 more source

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

Aerosol extinction profiles at 525 nm and 1020 nm derived from ACE imager data: comparisons with GOMOS, SAGE II, SAGE III, POAM III, and OSIRIS [PDF]

Atmospheric Chemistry and Physics, 2008
The Canadian ACE (Atmospheric Chemistry Experiment) mission is dedicated to the retrieval of a large number of atmospheric trace gas species using the solar occultation technique in the infrared and UV/visible spectral domain.
F. Vanhellemont, C. Tetard, A. Bourassa, M. Fromm, J. Dodion, D. Fussen, C. Brogniez, D. Degenstein, K. L. Gilbert, D. N. Turnbull, P. Bernath, C. Boone, K. A. Walker   +12 more
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