Results 81 to 90 of about 1,433,202 (288)

Parametric Resonance in a Time-Dependent Harmonic Oscillator

Моделирование и анализ информационных систем, 2013
In this paper, we study the phenomenon of appearance of new resonances in a timedependent harmonic oscillator under an oscillatory decreasing force. The studied equation belongs to the class of adiabatic oscillators and arises in connection with the ...
P. N. Nesterov
doaj   +3 more sources

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

FEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain, Elise Buret, Le Hoang Thanh Nguyen, Marion Cocheteux, Nicolas Touya, Mélanie Dhayer, Romain Dubois, Frank Lafont, Sebastien Janel, Patrice Maboudou, Steve Lancel, Philippe Marchetti   +11 more
wiley   +1 more source

Comparing parametric and semi-parametric approaches for bayesian cost-effectiveness analyses in health economics [PDF]

We consider the problem of assessing new and existing technologies for their cost-effectiveness in the case where data on both costs and effects are available from a clinical trial, and we address it by means of the cost-effectiveness acceptability curve.
Andrea Tancredi, Caterina Conigliani
core  

Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants

Annals of Clinical and Translational Neurology, EarlyView.
Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants. ABSTRACT Objective Return of disease activity is expected when patients discontinue disease‐modifying therapy (DMT) for multiple sclerosis (MS). Some MS DMTs are associated with higher‐than‐expected disease activity (rebound) after discontinuation.
Ralf Gold, Krzysztof W. Selmaj, Regina Berkovich, Jeffrey A. Cohen, Giancarlo Comi, Eva K. Havrdová, James K. Sheffield, Hetal Desai, Chun‐Yen Cheng, Jon V. Riolo, Andrew Thorpe, Erik DeBoer, Bruce A. C. Cree   +12 more
wiley   +1 more source

Resonances in a spring-pendulum: algorithms for equivariant singularity theory [PDF]

, 1998
A spring-pendulum in resonance is a time-independent Hamiltonian model system for formal reduction to one degree of freedom, where some symmetry (reversibility) is maintained.
Vegter, G, Lunter, G.A.; id_orcid, Lunter, Gerard, Hoveijn, I.,, Vegter, G., Lunter, G.A., Hoveijn, I., Vegter, G.,, Broer, H.W., Vegter, G.; id_orcid, Broer, H.W.,, Broer, H.W.; id_orcid, Lunter, GA, Hoveijn, I, Lunter, G.A.,, Broer, HW   +15 more
core   +2 more sources

Generation of Internal Gravity Waves in the Thermosphere during Operation of the SURA Facility under Parametric Resonance Conditions

Atmosphere, 2020
The problem of excitation of internal gravity waves (IGWs) in the upper atmosphere by an external source of a limited duration of operation is investigated.
Gennadiy I. Grigoriev, Victor G. Lapin, Elena E. Kalinina   +2 more
doaj   +1 more source

Optical parametric resonances [PDF]

Journal of Physics B: Atomic and Molecular Physics, 1976
The response of a two-level atom driven by a strong resonant amplitude-modulated field is calculated in the Bloch model. The population difference and dipole moment show a resonant behaviour when the Rabi frequency is a multiple of the modulation frequency. This phenomenon is related to the resonant AC Stark effect and is the optical counterpart of the
openaire   +1 more source

[18F]Fluorodeprenyl‐D2 PET as a Tool to Monitor Disease Activity in GAD65‐Ab Autoimmune Encephalitis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate [18F]fluorodeprenyl‐D2 ([18F]F‐DED) positron‐emission tomography (PET) imaging as a biomarker of disease activity in autoimmune encephalitis (AIE) associated with glutamic acid decarboxylase 65 (GAD65) antibodies. Methods [18F]F‐DED PET was performed in 25 GAD65‐AIE patients and 8 controls using dynamic (0–60 min) and ...
Julia S. Dorneich, Jonathan A. Gernert, Hanna Zimmermann, Lisa Tagnin, Marianthi Zeinaki, Laura Sanzo, Letizia Vogler, Elisabeth Kaufmann, Justina Dargvainiene, Frank Leypoldt, Gérard N. Bischof, Robert Perneczky, Boris‐Stephan Rauchmann, Simon Lindner, Günter U. Höglinger, Rudolf A. Werner, Martin Kerschensteiner, Tania Kümpfel, Matthias Brendel, Franziska S. Thaler   +19 more
wiley   +1 more source

Parametric resonance and amplification

, 2016
LuK-tutkielmassani käsittelen parametrista resonanssia ja sen sovelluksia. Parametrinen resonanssi on epästabiilisuusilmiö jossa jotakin systeemin liikeyhtälön parametria muuttamalla saadaan värähtely kasvamaan.
Alamäki, Markku
core  

Parametric resonance and nonlinear dynamics in a coupled double-pendulum system [PDF]

AIP Advances
Nonlinear dynamics plays a significant role in interdisciplinary fields spanning biology, engineering, mathematics, and physics. Under small-amplitude approximations, certain nonlinear systems can be effectively described by the linear Mathieu equation ...
Yusheng Niu, Yixian Liu, Hongyan Fan, Zhenqi Bai, Yichi Zhang   +4 more
doaj   +1 more source