Results 21 to 30 of about 239,132 (234)

On the stability of large-scale streaks in turbulent Couette and Poiseulle flows [PDF]

, 2011
The linear secondary stability of large-scale optimal streaks in turbulent Couette flow at Re_τ = 52 and Poiseulle flow at Reτ = 300 is investigated.
Cossu, Carlo, Hwang, Yongyun, Park, Junho   +2 more
core   +5 more sources

Compact and Low Crosstalk Echelle Grating Demultiplexer on Silicon-On-Insulator Technology

Electronics, 2019
We report on the design of an ultra-compact integrated wavelength demultiplexer in echelle configuration for the optical O-band realized on silicon-on-insulator technology.
D. Melati, P. Verly, A. Delâge, Shurui Wang, J. Lapointe, P. Cheben, J. Schmid, S. Janz, Danxia Xu   +8 more
semanticscholar   +1 more source

Compact, astigmatism corrected cross-grating spectrometer [PDF]

EPJ Web of Conferences, 2020
Compact cross-grating spectrometers are inspired by classical high-end Echelle spectrometers and allow to acquire a large spectrum with a high spectral resolution in a single shot.
Kraus Matthias, Förster Erik, Bagusat Verena, Hönle Tobias, Uwurukundo Xavier, Bohnert Patrick, Brüning Robert, Hillmer Hartmut, Brunner Robert   +8 more
doaj   +1 more source

Chemical abundances of fast-rotating massive stars. I. Description of the methods and individual results [PDF]

, 2017
Aims: Recent observations have challenged our understanding of rotational mixing in massive stars by revealing a population of fast-rotating objects with apparently normal surface nitrogen abundances.
Cazorla, Constantin, Daflon, Simone, Morel, Thierry, Naze, Yael, Oey, M. S., Rauw, Gregor, Semaan, Thierry   +6 more
core   +1 more source

A uniform asteroseismic analysis of 22 solar-type stars observed by Kepler [PDF]

, 2012
Asteroseismology with the Kepler space telescope is providing not only an improved characterization of exoplanets and their host stars, but also a new window on stellar structure and evolution for the large sample of solar-type stars in the field.
A. Bonanno, A. Serenelli, Ammons, B. Wohler, Basu, Basu, Brown, Bruntt, Böhm-Vitense, C. Karoff, C. Régulo, Christensen-Dalsgaard, Christensen-Dalsgaard, D. Salabert, D. Stello, Demarque, Dotter, Eggleton, G. A. Verner, G. Doğan, Gai, Gilliland, Grevesse, Guenther, H. Bruntt, H. Kjeldsen, Harvey, Hazlewood, Huber, I. M. Brandão, J. A. Guzik, J. Ballot, J. Christensen-Dalsgaard, J. D. Twicken, J. Molenda-Żakowicz, Jenkins, K. Uddin, Kjeldsen, Kjeldsen, Kurucz, L. Piau, M. J. P. F. G. Monteiro, M. J. Thompson, M. Roth, M. Woitaszek, Mathur, Metcalfe, Metcalfe, Michaud, O. Benomar, O. L. Creevey, P. Gaulme, P.-O. Quirion, Pinsonneault, Quirion, R. A. García, R. Handberg, R. Trampedach, Rogers, Rogers, S. Basu, S. Deheuvels, S. Hekker, S. Mathur, Spergel, Stello, Stello, Suárez, T. Appourchaux, T. L. Campante, T. R. Bedding, T. R. White, T. S. Metcalfe, Torres, Toutain, Trampedach, van Leeuwen, W. Herzberg, W. J. Chaplin, White, White, Y. Elsworth   +81 more
core   +6 more sources

Development of a Spatial Heterodyne Terahertz Raman Spectrometer with Echelle Gratings

Applied Sciences, 2023
This paper introduces an echelle grating spatial heterodyne terahertz Raman spectrometer (E-SHTRS) that combines echelle gratings with spatial heterodyne terahertz Raman spectroscopy technology by replacing the gratings on the interference arms with 36 ...
Yuqi Sun, Xiaotian Li, Jiri Galantu, Qihang Chu, Jun Chen, Fuguan Li, Nan Song, Geng Wang, Qiliang Ni   +8 more
doaj   +1 more source

TESS asteroseismology of the known red-giant host stars HD 212771 and HD 203949 [PDF]

, 2019
International ...
Adibekyan, Vardan, Aguirre, Víctor Silva, Antia, H. M., Ball, Warrick, Basu, Sarbani, Bean, Jacob L., Bedding, Timothy R., Bossini, Diego, Campante, Tiago L., Chaplin, William J., Christensen-Dalsgaard, Jørgen, Corsaro, Enrico, Cunha, Margarida S., Davies, Guy R., García, Rafael A., Handberg, Rasmus, Hon, Marc, Huber, Daniel, Kane, Stephen R., Kawaler, Steven D., Kjeldsen, Hans, Kuszlewicz, James S., Lucas, Miles, Lund, Mikkel N., Mathur, Savita, Mena, Elisa Delgado, Metcalfe, Travis S., Miglio, Andrea, Monteiro, Mário J. P. F. G., Mosser, Benoît, Nardetto, Nicolas, Nielsen, Martin B., Nsamba, Benard, Pereira, Filipe, Pinsonneault, Marc H., Reffert, Sabine, Serenelli, Aldo M., Sousa, Sérgio G., Stassun, Keivan G., Stello, Dennis, Stock, Stephan, Tsantaki, Maria, Turnbull, Margaret C., Veras, Dimitri, Vrard, Mathieu, Yıldız, Mutlu, Çelik Orhan, Zeynep, Örtel, Sibel   +47 more
core   +5 more sources

NRES: the network of robotic echelle spectrographs

Astronomical Telescopes + Instrumentation, 2018
Las Cumbres Observatory Global Telescope Network (LCOGT) has built the Network of Robotic Echelle Spectrographs (NRES), consisting of four identical, high-resolution optical spectrographs, each fiber-fed simultaneously by up to two 1-meter telescopes and
R. Siverd, T. Brown, S. Barnes, M. Bowman, J. de Vera, S. Foale, D. Harbeck, Todd Henderson, J. Hygelund, A. Kirby, C. McCully, J. Nation, Cary Smith, Brook Taylor, J. Tufts   +14 more
semanticscholar   +1 more source

Factors Affecting Occupants’ Satisfaction in Governmental Buildings: The Case of the Kingdom of Bahrain

Buildings, 2021
Satisfaction is a very important factor in improving productivity and performance in the work environment. This study aims to investigate the levels of occupants’ satisfaction with the indoor environmental quality (IEQ) in the governmental buildings in ...
Noora Albuainain, Ghaleb Sweis, Wassim AlBalkhy, Rateb Sweis, Zoubeir Lafhaj   +4 more
doaj   +1 more source

A probable pre-main sequence chemically peculiar star in the open cluster Stock 16 [PDF]

, 2014
We used the Ultraviolet and Visual Echelle Spectrograph of the ESO-Very Large Telescope to obtain a high resolution and high signal-to-noise ratio spectrum of Stock 16-12, an early-type star which previous Delta-a photometric observations suggest being a
Bagnulo, S., Fossati, L., Netopil, M., Paunzen, E., Pintado, O. I., Zwintz, K.   +5 more
core   +3 more sources