Results 21 to 30 of about 19,218,504 (341)

Spin relaxation and decoherence of two-level systems [PDF]

, 2005
We revisit the concepts of spin relaxation and spin decoherence of two level (spin-1/2) systems. From two toy-models, we clarify two issues related to the spin relaxation and decoherence: 1) For an ensemble of two-level particles each subjected to a ...
Sun Yin, X. Hu, X. R. Wang, Y. S. Zheng, Y. Yafet   +4 more
core   +2 more sources

Dielectric relaxation and dipole moment studies of hydrogen bonded complexes for enanthamide and valeramide with halogenated phenols using J-band microwave frequency

Materials Research Express, 2022
Dielectric investigations of hydrogen bonded complexes of Enanthamide and Valeramide with 4-bromophenol, 4-chlorophenol, 4-iodophenol and 4-fluorophenol in benzene were done at 303K, using a J-band (7.22GHz) microwave bench and dielectric relaxation ...
A Aathif Basha, F Liakath Ali Khan, P Muzammil, G S Fasiuddin   +3 more
doaj   +1 more source

Quantitative association of cerebral blood flow, relaxation times and proton density in young and middle-aged primary insomnia patients: A prospective study using three-dimensional arterial spin labeling and synthetic magnetic resonance imaging

Frontiers in Neuroscience, 2023
ObjectivesTo quantitatively measure the T1 value, T2 value, proton density (PD) value, and cerebral blood flow (CBF) in young and middle-aged primary insomnia (PI) patients, and analyze the correlations between relaxation times, PD, and CBF to explore ...
Xiao-Wen Luo, Quan-Xi Li, Li-Shan Shen, Xiang Zhou, Feng-Yun Zou, Wen-Jie Tang, Ruo-Mi Guo   +6 more
doaj   +1 more source

Viscous hydrodynamics relaxation time from AdS/CFT [PDF]

, 2007
We consider an expanding boost-invariant plasma at strong coupling using the AdS/CFT correspondence for N=4 SYM. We determine the relaxation time in second order viscous hydrodynamics and find that it is around thirty times shorter than weak coupling ...
A. Ashtekar, C. Fefferman, E. Shuryak, E. Witten, J. M. Maldacena, Michał P. Heller, Romuald A. Janik   +6 more
core   +2 more sources

Optimum Pump Pulse Duration for X-Ray Ar-Plasma Lasing

Photonics, 2015
In plasma-driven X-ray lasers, it is critical to optimize the duration and time delay between pump pulses. In this study, we have done parametric simulations in order to systematically investigate the optimum time configuration of pump pulses.
Leili Masoudnia, Davide Bleiner
doaj   +1 more source

A Substitutive Coefficients Network for the Modelling of Thermal Systems: A Mono-Zone Building Case Study

Energies, 2021
A modelling approach based on the Substitutive Coefficients Network (SCN) is developed to predict the thermal behavior of a system in the dynamic state-space, without requiring knowledge of the thermal mass.
Lahoucine Ouhsaine, Mohammed El Ganaoui, Abdelaziz Mimet, Jean-Michel Nunzi   +3 more
doaj   +1 more source

Cerebral Microstructural Alterations in Patients With Early Parkinson’s Disease Detected With Quantitative Magnetic Resonance Measurements

Frontiers in Aging Neuroscience, 2021
Objective: Parkinson’s disease (PD) is the second most common neurodegenerative disease in the elderly. In early stages of PD, patients typically display normal brain magnet resonance imaging (MRI) in routine screening.
Martin Klietz, M. Handan Elaman, Nima Mahmoudi, Patrick Nösel, Mareike Ahlswede, Florian Wegner, Günter U. Höglinger, Heinrich Lanfermann, Xiao-Qi Ding   +8 more
doaj   +1 more source

Dynamical Renormalization Group Approach to Quantum Kinetics in Scalar and Gauge Theories [PDF]

, 2000
We derive quantum kinetic equations from a quantum field theory implementing a diagrammatic perturbative expansion improved by a resummation via the dynamical renormalization group.
A. Bochkarev, A. Hansson, A. Jakovac, A. Krasnitz, A. Niégawa, A. Niégawa, A. Rajantie, B.D. Serot, C. Greiner, C.Y. Wong, D. Bodeker, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D.H. Rischke, E. Braaten, E. Braaten, F.T. Brandt, G. Aarts, G. Aarts, H. Elze, H. Meyer-Ortmanns, H. Satz, H.-T. Elze, H.J. de Vega, I. Dadic, I.D. Lawrie, I.D. Lawrie, I.D. Lawrie, I.D. Lawrie, J. Rau, J. Schwinger, J.-P. Blaizot, J.-P. Blaizot, J.-P. Blaizot, J.-P. Blaizot, J.W. Harris, K. Geiger, K. Geiger, K. Geiger, K. Geiger, K. Geiger, K. James, K. Takashiba, K.-C. Chou, K.J. Eskola, K.J. Eskola, K.J. Eskola, K.J. Eskola, K.T. Mahanthappa, L. Dolan, L. Faddeev, L. P. Csernai, L.-Y. Chen, L.-Y. Chen, L.V. Keldysh, M. Henneaux, M. Le Bellac, M.E. Carrington, M.H. Thoma, N.P. Landsmann, P. Arnold, P. Danielewicz, P. Elmfors, P.F. Bedaque, P.M. Bakshi, R.D. Pisarski, R.D. Pisarski, R.D. Pisarski, R.D. Pisarski, R.D. Pisarski, R.D. Pisarski, R.D. Pisarski, R.R. Parwani, S. Chiku, S. Chiku, S. Jeon, S. Jeon, S. Mrówczyński, S. Mrówczyński, S. Mrówczyński, S.A. Bass, T. Altherr, T. Altherr, T. Altherr, T. Hatsuda, T. Kunihiro, T. Kunihiro, T. Kunihiro, U. Kraemmer, V.E. Zakharov, W. Poeschl, X.-N. Wang   +101 more
core   +2 more sources

Role of quantitative analysis of T2 relaxation time in differentiating benign from malignant breast lesions

Journal of International Medical Research, 2018
Objective To investigate the role of quantitative analysis of T2 relaxation time in the magnetic resonance imaging (MRI) diagnosis of breast cancer. Methods The study enrolled patients with clinical breast masses who were examined using MRI at eight ...
Li Liu, B. Yin, K. Shek, D. Geng, Yi-ping Lu, J. Wen, X. Kuai, Weijun Peng   +7 more
semanticscholar   +1 more source

Glassy Aging with Modified Kohlrausch-Williams-Watts Form [PDF]

, 2007
In this report we address the question whether aging in the non equilibrium glassy state is controlled by the equilibrium alpha-relaxation process which occur at temperatures above Tg. Recently Lunkenheimer et. al. [Phys. Rev. Lett.
Das, Shankar P., Gupta, Bhaskar Sen
core   +2 more sources