Results 51 to 60 of about 3,935 (164)

Laser‐Induced Defects in a Bulk GaAs Used as an Output Coupler in an Nd : YAG Laser Cavity

open access: yesJournal of Atomic and Molecular Physics, Volume 2011, Issue 1, 2011., 2011
By using bulk GaAs as an output coupler as well as a saturable absorber, with changing of concentration of defects inside the laser cavity, Q‐switching of flashlamp‐pumped Nd : YAG laser has been studied. It is shown that the formation of the laser pulses, in a wide range of duration, which were reported in a lot of previous papers is caused by the ...
Sh. Payziyev   +4 more
wiley   +1 more source

Linear stability analysis of detonations via numerical computation and dynamic mode decomposition

open access: yes, 2017
We introduce a new method to investigate linear stability of gaseous detonations that is based on an accurate shock-fitting numerical integration of the linearized reactive Euler equations with a subsequent analysis of the computed solution via the ...
Kabanov, Dmitry I., Kasimov, Aslan R.
core   +1 more source

Discretized representations of harmonic variables by bilateral Jacobi operators

open access: yesDiscrete Dynamics in Nature and Society, Volume 4, Issue 4, Page 297-308, 2000., 2000
Starting from a discrete Heisenberg algebra we solve several representation problems for a discretized quantum oscillator in a weighted sequence space. The Schrödinger operator for a discrete harmonic oscillator is derived. The representation problem for a q‐oscillator algebra is studied in detail.
Andreas Ruffing
wiley   +1 more source

Mesolithic Human Bones from the Upper Volga Basin: Radiocarbon and Trace Elements [PDF]

open access: yes, 2009
Human bones from 3 Mesolithic sites in the Upper Volga basin were analyzed for trace elements, and dated by accelerator mass spectrometry (AMS). The radiocarbon dates of the bones correspond to the Mesolithic era.
Alexandrovskaya, E.I.,   +3 more
core   +4 more sources

New documents on the history of the Arzamas, Kasimov and Tsna service Tatars (1640s)

open access: yesFrom History and Culture of Peoples of the Middle Volga Region, 2023
The work introduces into scientific circulation, investigates and publishes two sets of documents of the 1640s on the history of Arzamas, Kasimov and Tsna service Tatars, each of which includes the "memory" of the Kazan Palace Office to the Military Records Office and the nominal list of service people (the nominal list of "Alatortsy and Kurmyshane ...
openaire   +1 more source

Prognostic factors in bushfire‐affected koalas–Kangaroo Island bushfire response 2020

open access: yesAustralian Veterinary Journal, Volume 103, Issue 8, Page 453-463, August 2025.
This study presents a retrospective analysis of clinical records data from koalas presenting for treatment following the large‐scale bushfire event on Kangaroo Island 2019–2020. The aim of the study was to identify prognostic factors for koalas affected by bushfire. Koalas (n = 199) were grouped based on their burn status in combination with their burn
O Funnell   +6 more
wiley   +1 more source

Quantum dynamics of a damped deformed oscillator [PDF]

open access: yes, 1999
The interaction of a quantum deformed oscillator with the environment is studied deriving a master equation whose form strongly depends on the type of deformation.Comment: LaTeX file, 6 ...
Mancini, S.
core   +3 more sources

Seismic Signatures of Fluctuating Fragmentation in Volcanic Eruptions

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 1, January 2025.
Abstract Fragmentation plays a critical role in eruption explosivity by influencing the eruptive jet and plume dynamics that may initiate hazards such as pyroclastic flows. The mechanics and progression of fragmentation during an eruption are challenging to constrain observationally, limiting our understanding of this important process.
Katherine R. Coppess   +2 more
wiley   +1 more source

Searching and describing objects in satellite images on the basis of modeling reasoning

open access: yesКомпьютерная оптика, 2020
The article presents an approach to a problem of contextual search and description of objects in raster satellite images, which consists in modeling reasoning on the basis of structured cases.
D.R. Kasimov
doaj   +1 more source

The past and future of the study of Islamic esotericism

open access: yesReligion Compass, Volume 18, Issue 7, July 2024.
Abstract The study of Islamic esotericism, particularly the concept of al‐bāṭiniyya, remains fragmented. While often studied under various labels like “mysticism” and “occultism,” it is widely equated to Sufism. Scholars still hesitate to use the term al‐bāṭiniyya due to its historical pejorative connotations, linking it to extremist adherence to ...
Liana Saif
wiley   +1 more source

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