Results 41 to 50 of about 282,866 (344)

Carrier-Envelope Offset Frequency Stabilization of a Thin-Disk Laser Oscillator via Depletion Modulation

IEEE Photonics Journal, 2020
We present a novel concept for the stabilization of the carrier-envelope offset (CEO) frequency of femtosecond pulse trains from thin-disk laser oscillators by exploiting gain depletion modulation in the active gain region.
Jose R. C. Andrade, Norbert Modsching, Ayhan Tajalli, Christian M. Dietrich, Sven Kleinert, Fabian Placzek, Bernhard Kreipe, Stephane Schilt, Valentin J. Wittwer, Thomas Sudmeyer, Uwe Morgner   +10 more
doaj   +1 more source

Formation and Evolution of the Disk System of the Milky Way: [alpha/Fe] Ratios and Kinematics of the SEGUE G-Dwarf Sample

, 2011
We employ measurements of the [alpha/Fe] ratio derived from low-resolution (R~2000) spectra of 17,277 G-type dwarfs from the SEGUE survey to separate them into likely thin- and thick-disk subsamples.
Abadi, Abazajian, Aihara, Allende Prieto, An, An, An, Andreas Just, Bond, Brian Yanny, Brook, Brook, Brook, Carollo, Casetti-Dinescu, Chiba, Constance M. Rockosi, Deokkeun An, Dierickx, Fuhrmann, Gilmore, Girard, Girard, Heather L. Morrison, Helio J. Rocha-Pinto, Ivezić, Jenkins, Jennifer A. Johnson, Jonathan Bird, Kazantzidis, Lee, Lee, Lee, Loebman, Minchev, Munn, Munn, Parker, Paul Harding, Ralph Schönrich, Reddy, Roškar, Roškar, Schlesinger, Sesar, Smolinski, Steinmetz, Timothy C. Beers, Villalobos, Wyse, Yanny, York, Yoshii, Young Sun Lee, Zwitter, Željko Ivezić   +55 more
core   +1 more source

The Stellar Population of the Thin Disk [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractWe discuss recent observations of stars located close to the symmetry plane of the Milky Way, and examine them in the context of theories of Galaxy formation and evolution. The kinematics, ages, and compositions of thin disk stars in the solar neighborhood display complex patterns, and interesting correlations.
openaire   +3 more sources

Contracting thin disks

Journal of Topology and Analysis, 2019
We answer a question of Liokumovich–Nabutovsky–Rotman showing that if [Formula: see text] is a Riemannian 2-disk with boundary length [Formula: see text], diameter [Formula: see text] and area [Formula: see text] then [Formula: see text] can be filled by a homotopy [Formula: see text] with [Formula: see text] bounded by [Formula: see text].
openaire   +3 more sources

Lick Indices in the Thin and Thick Disks of Edge‐On Disk Galaxies [PDF]

The Astrophysical Journal, 2008
14 pages, 10 figures, accepted for publication in ...
Peter Yoachim, Peter Yoachim, Julianne J. Dalcanton   +2 more
openaire   +5 more sources

Kinematic and chemical components in the solar neighbourhood

EPJ Web of Conferences, 2012
Abundance data on solar neighbourhood stars suggest the presence of chemically-distinct stellar components in the solar neighbourhood. When the abundances of Fe, α elements, and the r-process element Eu are considered together, stars separate neatly into
Navarro J.F.
doaj   +1 more source

Cr:ZnSe thin disk cw laser [PDF]

SPIE Proceedings, 2013
Abstract: A Thulium fiber laser pumped or diode laser stack pumped Cr:ZnSe thin disk cw InP multimode laser at 2.4 µm with an output power of 5 and 4 W, respectively, and - with optical-tooptical efficiencies of 10% will be presented. An experimentally verified and numerically simulated thermal lens ing induced and cyclic instability in the laser ...
Renz, Günther, Speiser, Jochen, Giesen, Adolf, Sorokina, Irina, Sorokin, Evgeni   +4 more
openaire   +3 more sources

Origin of chemical and dynamical properties of the Galactic thick disk

, 2011
We adopt a scenario in which the Galactic thick disk was formed by minor merging between the first generation of the Galactic thin disk (FGTD) and a dwarf galaxy about 9 Gyr ago and thereby investigate chemical and dynamical properties of the Galactic ...
Abadi, Allende Prieto, Bekki, Bekki, Bekki, Bensby, Binney, Binney, Brook, Carollo, Chiappini, Chiba, Dierickx, Dinescu, Edvardsson, Frogel, Fuhrmann, Gilmore, Gilmore, Gratton, Huang, Humphreys, Ivezić, Jurić, Karataş, Kazantzidis, Kenji Bekki, Larsen, Larsen, Lee, Loebman, Parker, Prochaska, Reddy, Reddy, Robin, Roškar, Ruchti, Takuji Tsujimoto, Tsujimoto, Tsujimoto, Villalobos, Yoachim, Yoshii   +43 more
core   +1 more source

The rs10191329 Risk Allele Is Associated With Pronounced Retinal Layer Atrophy in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate whether the rs10191329 risk allele in the DYSF–ZNF638 locus, which is implicated in central nervous system resilience rather than immune‐mediated pathology, is associated with retinal layer thinning, a biomarker of neuroaxonal damage in relapsing multiple sclerosis (RMS). Methods From a prospective observational study,
Gabriel Bsteh, Ruchi Tanavade, Nik Krajnc, Fabian Föttinger, Theresa König, Martin Krenn, Lukas Haider, Barbara Kornek, Fritz Leutmezer, Kerstin U. Ludwig, Stefan Macher, Tobias Monschein, Markus Ponleitner, Paulus Rommer, Christiane Schmied, Karin Zebenholzer, Tobias Zrzavy, Gudrun Zulehner, Franziska Di Pauli, Axel Schmidt, Harald Hegen, Berthold Pemp, Thomas Berger   +22 more
wiley   +1 more source

Expanding Hereditary Spastic Paraplegias Limits: Biallelic SPAST Variants in Cerebral Palsy Mimics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegias (HSP) are rare neurodegenerative disorders marked by spasticity and lower limb weakness. The most common type, SPG4, is usually autosomal dominant and caused by SPAST gene variants, typically presenting as pure HSP.
Gregorio A. Nolasco, Mònica Roldán, Yalda Jamshidi, Ioannis Georvasilis, Rocío Jadraque Rodríguez, Reza Boostani, Ali Shoeibi, Lluís Armengol, Anna Codina, Ehsan Ghayoor Karimiani, Cristina Hernando‐Davalillo, Loreto Martorell, María Luisa Ramírez Almaraz, Jordi Muchart, Carlos Ortez, Andrés Nascimento, Roser Urreizti, Daniel Natera‐de Benito, Mercedes Serrano   +18 more
wiley   +1 more source