Log in

Relevant bibliographies by topics / Relaxation time / Journal articles

To see the other types of publications on this topic, follow the link: Relaxation time.

Journal articles on the topic 'Relaxation time'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Relaxation time.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Suh, Daewoong, and Reinhold H. Dauskardt. "Mechanical Relaxation Time Scales in a Zr–Ti–Ni–Cu–Be Bulk Metallic Glass." Journal of Materials Research 17, no. 6 (2002): 1254–57. http://dx.doi.org/10.1557/jmr.2002.0188.

Full text

Abstract:

The relaxation time scales in a commercial-grade Zr41.25Ti13.75Ni10Cu12.5Be22.5 (at.%) bulk metallic glass were examined using transient and dynamic mechanical experiments. The viscoelastic and sub-Tg relaxations were well described by the Kohlrausch–Williams–Watts relaxation function. A large activation energy (4.0 eV) and small nonexponentiality parameter (approximately 0.5) were observed for viscoelastic relaxation above Tg consistent with the cooperative nature of atomic movements leading ultimately to viscous flow. Conversely, a small activation energy (0.1 eV) and large nonexponentiality

APA, Harvard, Vancouver, ISO, and other styles

2

Sun, Nanjian, and Charles E. Frazier. "Time/temperature equivalence in the dry wood creep response." Holzforschung 61, no. 6 (2007): 702–6. http://dx.doi.org/10.1515/hf.2007.114.

Full text

Abstract:

Abstract Rheology of wood molecular and supramolecular organization has mostly been conducted with dynamic methods, and the application of time/temperature equivalence typically requires plasticizers to observe segmental relaxation. Dry wood rheology offers the experimental advantage of easy moisture control, but only weak secondary relaxations are observed with dynamic methods. Static methods allow for the longer relaxation times in glassy polymers, and these relaxations are strongly stimulated by lower less damaging temperatures. This study describes the application of creep mode time/temper

APA, Harvard, Vancouver, ISO, and other styles

3

Sudo, Seiichi, Naoki Shinyashiki, Yusuke Kitsuki, and Shin Yagihara. "Dielectric Relaxation Time and Relaxation Time Distribution of Alcohol−Water Mixtures." Journal of Physical Chemistry A 106, no. 3 (2002): 458–64. http://dx.doi.org/10.1021/jp013117y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Kaldoudi, Eleni, and Steve C. R. Williams. "Relaxation time measurements in NMR imaging. Part I: Longitudinal relaxation time." Concepts in Magnetic Resonance 5, no. 3 (1993): 217–42. http://dx.doi.org/10.1002/cmr.1820050303.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Shan, Xiaowen, Xuhui Li, and Yangyang Shi. "A multiple-relaxation-time collision model by Hermite expansion." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 379, no. 2208 (2021): 20200406. http://dx.doi.org/10.1098/rsta.2020.0406.

Full text

Abstract:

The Bhatnagar–Gross–Krook (BGK) single-relaxation-time collision model for the Boltzmann equation serves as the foundation of the lattice BGK (LBGK) method developed in recent years. The description of the collision as a uniform relaxation process of the distribution function towards its equilibrium is, in many scenarios, simplistic. Based on a previous series of papers, we present a collision model formulated as independent relaxations of the irreducible components of the Hermite coefficients in the reference frame moving with the fluid. These components, corresponding to the irreducible repr

APA, Harvard, Vancouver, ISO, and other styles

6

Prasad, Rai Chandra Shekhar, and Yogendra Kumar. "Dielectric relaxation time behavior of complexed spores: A modified equation for relaxation time." Journal of Advances in Science and Technology 21, no. 1 (2024): 193–96. https://doi.org/10.29070/m3a8b195.

Full text

Abstract:

A study deals with “Dielectric relaxation time behavior of complexed sporis: A modified equation for relaxation time.” The theory was determination of relaxation time of regard polar molecule gives an average effect representing that over all relaxation. The method was studied that experimental theory of dielectric relaxation behaviour of modified equation of Complexed species for relaxation time. The result was formed that individual molecules, Pyridine pyrrole, Quinaline pyrrole, and Quinaline Pyridine indole, also dielectric the experimental of thermodynamics parameter's etc.

APA, Harvard, Vancouver, ISO, and other styles

7

Ristaniemi, Aapo, Dristi Regmi, Diponkor Mondal, et al. "Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon." Journal of The Royal Society Interface 18, no. 174 (2021): 20200737. http://dx.doi.org/10.1098/rsif.2020.0737.

Full text

Abstract:

Tissue-level stress-relaxation of ligaments and tendons in the toe region is characterized by fast and long-term relaxations and an increase in relaxation magnitude with strain. Characterizing the compositional and structural origins of these phenomena helps in the understanding of mechanisms of ligament and tendon function and adaptation in health and disease. A three-step tensile stress-relaxation test was conducted on dumbbell-shaped pieces of bovine knee ligaments and patellar tendon (PT) ( n = 10 knees). Their mechanical behaviour was characterized by a fibril-reinforced poroviscoelastic

APA, Harvard, Vancouver, ISO, and other styles

8

Holloway, R. H., R. Penagini, and A. C. Ireland. "Criteria for objective definition of transient lower esophageal sphincter relaxation." American Journal of Physiology-Gastrointestinal and Liver Physiology 268, no. 1 (1995): G128—G133. http://dx.doi.org/10.1152/ajpgi.1995.268.1.g128.

Full text

Abstract:

We developed and evaluated objective manometric criteria that define transient lower esophageal sphincter (LES) relaxation. In 23 normal subjects and 9 patients with gastroesophageal reflux disease, systematic analysis of swallow-induced LES relaxation showed that dry swallows preceded LES relaxation by a median of 1.4 s. The relaxation rate was always > 1 mmHg/s, the relaxation nadir always occurred within 7 s, and the duration of relaxation was < 9 s. During concurrent esophageal manometry and pH monitoring, 104 reflux episodes associated with a LES pressure fall that was not related t

APA, Harvard, Vancouver, ISO, and other styles

9

Yu, Peng, Cheng Fang, and Brian Williams. "Resolving Uncontrollable Conditional Temporal Problems Using Continuous Relaxations." Proceedings of the International Conference on Automated Planning and Scheduling 24 (May 11, 2014): 341–48. http://dx.doi.org/10.1609/icaps.v24i1.13623.

Full text

Abstract:

Uncertainty is commonly encountered in temporal scheduling and planning problems, and can often lead to over-constrained situations. Previous relaxation algorithms for over-constrained temporal problems only work with requirement constraints, whose outcomes can be controlled by the agents. When applied to uncontrollable durations, these algorithms may only satisfy a subset of the random outcomes and hence their relaxations may fail during execution. In this paper, we present a new relaxation algorithm, Conflict-Directed Relaxation with Uncertainty (CDRU), which generates relaxations that resto

APA, Harvard, Vancouver, ISO, and other styles

10

Stephanovich, V. A., M. D. Glinchuk, and B. Hilczer. "Relaxation time distribution function." Ferroelectrics 240, no. 1 (2000): 1495–505. http://dx.doi.org/10.1080/00150190008227975.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Ikeda, Harukuni. "Relaxation time below jamming." Journal of Chemical Physics 153, no. 12 (2020): 126102. http://dx.doi.org/10.1063/5.0024042.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Paulson, K. S., S. Jouravleva, and C. N. McLeod. "Dielectric relaxation time spectroscopy." IEEE Transactions on Biomedical Engineering 47, no. 11 (2000): 1510–17. http://dx.doi.org/10.1109/10.880103.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Oliveira, L. C., H. A. Gomide, and R. S. L. Rade. "Primary creep behaviour of polyester resins from multiple relaxation curves." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 217, no. 12 (2003): 1301–13. http://dx.doi.org/10.1243/095440603322769947.

Full text

Abstract:

Typical primary creep behaviour of a viscoelastoplastic material is shown when varying the temperature and the time rate of strain (of a previous tension). The creep behaviour is obtained from the tension test with multiple relaxations, where a numerical procedure is used in order to obtain creep curves from a series of relaxation curves. This test methodology allows interrelated tension, relaxation and creep behaviours to be obtained from one single test. The materials tested are proportional to the weight mixtures of rigid/flexible polyester resins with hardeners, generally used as model mat

APA, Harvard, Vancouver, ISO, and other styles

14

Mamontov, Eugene, and Piotr Zolnierczuk. "Determining the relaxation time from a temperature-dependent scan of the neutron spin-echo signal amplitude." EPJ Web of Conferences 272 (2022): 01014. http://dx.doi.org/10.1051/epjconf/202227201014.

Full text

Abstract:

Temperature-dependent scans of the neutron scattering intensity are commonly employed in high energy-resolution quasielastic measurements. Besides serving as a useful diagnostic tool for identifying the temperature range that could give rise to a measurable relaxation signal, such scans of the “elastic” (resolution-defined) intensity could be employed for determining the temperature at which the relaxation time in the system becomes equal to the resolution-defined characteristic time of the spectrometer measurement. This is a model-independent alternative to the “traditional” approach, when, a

APA, Harvard, Vancouver, ISO, and other styles

15

Guo, Jin Quan, Wu Zhou Meng, Fei Li, and Li Xin Wang. "Creep Prediction From Stress Relaxation Coupled With Equivalent Relaxation Rate." Applied Mechanics and Materials 644-650 (September 2014): 1382–85. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.1382.

Full text

Abstract:

Several stress relaxation and creep tests of high temperature material are performed. According to the characteristics of stress relaxations and the superposition equation of diffusion and Maxwell equations of two stages, equivalent relaxation time and equivalent relaxation rate are proposed. Considering equivalent relaxation rate as the creep rate under constant stress, the relaxation-creep conversion model is built up and presented. Then the steady-state creep curve and creep rate are calculated. The results show that the numerical results are in good agreement with the experimental data. It

APA, Harvard, Vancouver, ISO, and other styles

16

Laureckienė, Ginta, and Rimvydas Milašius. "Behaviour of Long-Lasting Stress Relaxation of Various Types of Yarns." Autex Research Journal 17, no. 4 (2017): 379–85. http://dx.doi.org/10.1515/aut-2017-0017.

Full text

Abstract:

Abstract The main goal of this researcher is estimating of the possibility of long-lasting (even until 200,000 s) stress relaxation by empirical investigation, which was performed for a few thousands of seconds. The empirical investigations of longlasting stress relaxation of different types of yarns (multifilament polyester, cotton and woollen) at different levels of elongation, i.e. at 3%, 5%, 7% and 10%, were carried out. The method of long-lasting relaxation behaviour prediction by the break-point of relaxation rate as well as the linear dependence of second part of relaxation were used. I

APA, Harvard, Vancouver, ISO, and other styles

17

Asma, Mohammed Elbashir Saad*1 Mubarak Dirar Abdallah2 &. Swsan Ahmed Elhouri Ahmed3. "TIME DEPENDENT SCHRÖDINGER EQUATION FOR TWO LEVEL SYSTEMS TO FIND TRAVERSE RELAXATION TIME." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 6, no. 3 (2019): 251–62. https://doi.org/10.5281/zenodo.2616917.

Full text

Abstract:

Transverse relaxation time is important in magnetic resonance imaging (MRI). It is important to construct new models to find new parameters that control imaging quality. In this work Schrodinger Equation in energy space for two level systems was used to find transverse relaxation time.  By suggesting sine and cosine beside complex solutions a useful expression for transverse relaxation time was found. When electric interaction dominate, i.e. for dielectric materials the transverse relaxation time depends on the electric dipole moment. However the magnetic materials having magnetic spin an

APA, Harvard, Vancouver, ISO, and other styles

18

Kumar-Krishnan, Siva, Evgen Prokhorov, and Gabriel Luna-Barcenas. "Molecular relaxation in Chitosan films in GHz frequency range." MRS Proceedings 1613 (2014): 83–88. http://dx.doi.org/10.1557/opl.2014.162.

Full text

Abstract:

ABSTRACTThe molecular relaxations behavior of chitosan (CS) films in the wide frequency range of 0.1-3x109 Hz (by using three different impedance analyzers) have been investigated in the temperature range of -100C to 120°C using Dielectric Spectroscopy (DS). Additionally to the low frequency molecular relaxations such as α and β relaxations, for the first time, high frequency (1-3 GHz) relaxation process has been observed in the chitosan films. This relaxation exhibits Arrhenius-type dependence in the temperature range of -100 C to 54°C with negative activation energy -2.7 kJ/mol. At temperatu

APA, Harvard, Vancouver, ISO, and other styles

19

Bartenev, G. M., and M. V. Karasev. "Relaxational transitions and discontinuous relaxation time spectra of cis-polyisoprene." Polymer Science U.S.S.R. 28, no. 11 (1986): 2742–50. http://dx.doi.org/10.1016/0032-3950(86)90314-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Nagao, T., and P. M. Vanhoutte. "Hyperpolarization contributes to endothelium-dependent relaxations to acetylcholine in femoral veins of rats." American Journal of Physiology-Heart and Circulatory Physiology 261, no. 4 (1991): H1034—H1037. http://dx.doi.org/10.1152/ajpheart.1991.261.4.h1034.

Full text

Abstract:

The contribution of membrane hyperpolarization to endothelium-dependent relaxations induced by acetylcholine was investigated in the femoral vein of the rat using a microelectrode technique and isometric tension recordings. Acetylcholine caused endothelium-dependent relaxations and hyperpolarization in tissues contracted with norepinephrine. The relaxation was sustained during a prolonged exposure to acetylcholine (less than or equal to 10 min). In contrast, the hyperpolarization declined with time. In the presence of nitro-L-arginine, a blocker of nitric oxide synthesis, the relaxation became

APA, Harvard, Vancouver, ISO, and other styles

21

Zaida, Maria Faria de Freitas, C. Neto Roberto, Inês Bruno Tavares Maria, and Sato de S. B. Monteiro Mariana. "NMR Relaxometry Applied to Pharmaceutical Forms." Pharmaceutical and Chemical Journal 6, no. 6 (2019): 86–98. https://doi.org/10.5281/zenodo.13950833.

Full text

Abstract:

NMR relaxometry proved to be a powerful tool that provides useful information on the molecular dynamics of different pharmaceutical materials. The proton NMR relaxometry was measured using low-field NMR equipment. The aim of this work was to evaluate the interaction of different drugs in pharmaceutical systems, such as: propranolol (POP) and atorvastatin (ATV) in tablets with Tapioca Starch (TS); POP in <em>Rosa Mosqueta</em> oil nanoemulsion (NE); and papain in carboxymethylcelulose (CMC) hydrogel, using the proton spin-lattice relaxation time parameter. The spin-lattice relaxation measuremen

APA, Harvard, Vancouver, ISO, and other styles

22

Floudas, G., G. Fytas, and I. Alig. "Brillouin scattering from bulk polybutadiene: distribution of relaxation times versus single relaxation time approach." Polymer 32, no. 13 (1991): 2307–11. http://dx.doi.org/10.1016/0032-3861(91)90065-q.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Matsumoto, Kazuyuki, and Takayuki Abe. "Nuclear Relaxation Time of Solid3He." Progress of Theoretical Physics 125, no. 2 (2011): 375–93. http://dx.doi.org/10.1143/ptp.125.375.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Torsello, Andrea, and Marcello Pelillo. "Continuous-time relaxation labeling processes." Pattern Recognition 33, no. 11 (2000): 1897–908. http://dx.doi.org/10.1016/s0031-3203(99)00174-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Macháček, Martin. "Dynamical systems with relaxation time." Journal of Statistical Physics 47, no. 5-6 (1987): 949–52. http://dx.doi.org/10.1007/bf01206169.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Belikov, A. E., I. Yu Solov'ev, G. I. Sukhinin, and R. G. Sharafutdinov. "Rotational relaxation time of nitrogen." Journal of Applied Mechanics and Technical Physics 29, no. 5 (1989): 630–36. http://dx.doi.org/10.1007/bf00857905.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Gadzhialiev, M. M., Z. Sh Pirmagomedov, and T. N. Efendieva. "Electron Relaxation Time in InAs." Russian Physics Journal 60, no. 12 (2018): 2241–42. http://dx.doi.org/10.1007/s11182-018-1353-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Paeng, Keewook, Heungman Park, Dat Tien Hoang, and Laura J. Kaufman. "Ideal probe single-molecule experiments reveal the intrinsic dynamic heterogeneity of a supercooled liquid." Proceedings of the National Academy of Sciences 112, no. 16 (2015): 4952–57. http://dx.doi.org/10.1073/pnas.1424636112.

Full text

Abstract:

The concept of dynamic heterogeneity and the picture of the supercooled liquid as a mosaic of environments with distinct dynamics that interchange in time have been invoked to explain the nonexponential relaxations measured in these systems. The spatial extent and temporal persistence of these regions of distinct dynamics have remained challenging to identify. Here, single-molecule fluorescence measurements using a probe similar in size and mobility to the host o-terphenyl unambiguously reveal exponential relaxations distributed in time and space and directly demonstrate ergodicity of the syst

APA, Harvard, Vancouver, ISO, and other styles

29

Sukcharoen, Kijvanish, Nitikorn Noraphaiphipaksa, Anat Hasap, and Chaosuan Kanchanomai. "Experimental and Numerical Evaluations of Localized Stress Relaxation for Vulcanized Rubber." Polymers 14, no. 5 (2022): 873. http://dx.doi.org/10.3390/polym14050873.

Full text

Abstract:

Vulcanized rubbers are commonly used to provide the energy absorption under compressive deformation from other engineering components. However, if a constant compressive deformation is maintained on rubber, the load response is not constant but decreases with time; i.e., the stress relaxation. A decrease in force response with time of rubber can be experimentally evaluated by the stress relaxation test. In the present work, the localized stress of vulcanized rubber during a compressive stress relaxation test (i.e., ASTM D6147) was evaluated. Hyperelastic behavior was assumed during rapid appli

APA, Harvard, Vancouver, ISO, and other styles

30

Holubová, J., Z. Černošek, E. Černošková, and M. Liška. "Isothermal structural relaxation: temperature and time dependencies of relaxation parameters." Journal of Non-Crystalline Solids 326-327 (October 2003): 135–40. http://dx.doi.org/10.1016/s0022-3093(03)00392-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Massa, Carlo Andrea, Francesco Puosi, and Dino Leporini. "Fractional Coupling of Primary and Johari–Goldstein Relaxations in a Model Polymer." Polymers 14, no. 24 (2022): 5560. http://dx.doi.org/10.3390/polym14245560.

Full text

Abstract:

A polymer model exhibiting heterogeneous Johari–Goldstein (JG) secondary relaxation is studied by extensive molecular-dynamics simulations of states with different temperature and pressure. Time–temperature–pressure superposition of the primary (segmental) relaxation is evidenced. The time scales of the primary and the JG relaxations are found to be highly correlated according to a power law. The finding agrees with key predictions of the Coupling Model (CM) accounting for the decay in a correlation function due to the relaxation and diffusion of interacting systems. Nonetheless, the exponent

APA, Harvard, Vancouver, ISO, and other styles

32

Tripodo, Antonio, Francesco Puosi, Marco Malvaldi, Simone Capaccioli, and Dino Leporini. "Coincident Correlation between Vibrational Dynamics and Primary Relaxation of Polymers with Strong or Weak Johari-Goldstein Relaxation." Polymers 12, no. 4 (2020): 761. http://dx.doi.org/10.3390/polym12040761.

Full text

Abstract:

The correlation between the vibrational dynamics, as sensed by the Debye-Waller factor, and the primary relaxation in the presence of secondary Johari-Goldstein (JG) relaxation, has been investigated through molecular dynamics simulations. Two melts of polymer chains with different bond length, resulting in rather different strength of the JG relaxation are studied. We focus on the bond-orientation correlation function, exhibiting higher JG sensitivity with respect to alternatives provided by torsional autocorrelation function and intermediate scattering function. We find that, even if changin

APA, Harvard, Vancouver, ISO, and other styles

33

Akkulova, Aigul. "Relaxation time measurement in liquids using compact NMR." Technobius Physics 3, no. 1 (2025): 0027. https://doi.org/10.54355/tbusphys/3.1.2025.0027.

Full text

Abstract:

This study investigates the influence of experimental parameters on the accurate determination of longitudinal and transverse relaxation times in liquids using compact nuclear magnetic resonance relaxometry. Water and glycerin were selected as representative samples due to their contrasting viscosities and relaxation behaviors. The primary objective was to evaluate how repetition time, echo time, number of data points, and time step affect the precision of T₁ and T₂ measurements. Longitudinal relaxation times were determined using a variable repetition time method, while transverse relaxation

APA, Harvard, Vancouver, ISO, and other styles

34

Fujisaki, Hiroshi, Yong Zhang, and JOHN E. STRAUB. "1SD04 Time scales to attain local ergodicity through vibrational relaxation in proteins." Seibutsu Butsuri 45, supplement (2005): S6. http://dx.doi.org/10.2142/biophys.45.s6_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Viščor, Petr, and N. B. Olsen. "Frequency and time response in relaxation time semiconductors." Journal of Non-Crystalline Solids 90, no. 1-3 (1987): 25–28. http://dx.doi.org/10.1016/s0022-3093(87)80377-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Tong, Maosong, Li Li, Weinan Wang, and Yizhong Jiang. "Determining capillary-pressure curve, pore-size distribution, and permeability from induced polarization of shaley sand." GEOPHYSICS 71, no. 3 (2006): N33—N40. http://dx.doi.org/10.1190/1.2195989.

Full text

Abstract:

An appropriate form of induced polarization (IP) acts as a bridge between the structure of a water-saturated core plug and its transport properties. The induced-polarization decay curves of natural rocks can be modeled as a weighted superposition of exponential relaxations. A singular-value decomposition method makes it possible to transform the induced-polarization decay data of the shaley sands into relaxation-time spectrum, defined as plot of weight versus the relaxation-time constant. We measured the induced-polarization decay curves of core samples from a formation of Daqing oil field usi

APA, Harvard, Vancouver, ISO, and other styles

37

Kimura, M., T. Endo, K. Sueoka, T. Araiso, K. Mukasa, and H. Takahashi. "Measurement of Spin-Relaxation Times by Time-Resolved Photoluminescence." Journal of the Magnetics Society of Japan 20, no. 2 (1996): 253–56. http://dx.doi.org/10.3379/jmsjmag.20.253.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Rocha, G. S., G. S. Denicol, M. N. Ferreira, and J. Noronha. "Novel Relaxation Time Approximation: A Consistent Calculation of Transport Coefficients with QCD-inspired Relaxation Times." Acta Physica Polonica B Proceedings Supplement 16, no. 1 (2023): 1. http://dx.doi.org/10.5506/aphyspolbsupp.16.1-a29.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Santini, Alessandro, Guido Giachetti, and Lapo Casetti. "Violent relaxation in the Hamiltonian mean field model: II. Non-equilibrium phase diagrams." Journal of Statistical Mechanics: Theory and Experiment 2022, no. 1 (2022): 013210. http://dx.doi.org/10.1088/1742-5468/ac4516.

Full text

Abstract:

Abstract A classical long-range-interacting N-particle system relaxes to thermal equilibrium on time scales growing with N; in the limit N → ∞ such a relaxation time diverges. However, a completely non-collisional relaxation process, known as violent relaxation, takes place on a much shorter time scale independent of N and brings the system towards a non-thermal quasi-stationary state (QSS). A finite system will eventually reach thermal equilibrium, while an infinite system will remain trapped in the QSS forever. For times smaller than the relaxation time, the distribution function of the syst

APA, Harvard, Vancouver, ISO, and other styles

40

Onyshchenko, Volodymyr Fedorovych, L. A. Karachevtseva, and M. I. Karas’. "Photoconductivity Relaxation Time in Macroporous Silicon." Emerging Science Journal 4, no. 3 (2020): 192–204. http://dx.doi.org/10.28991/esj-2020-01223.

Full text

Abstract:

Macroporous silicon has found applications in sensors, receivers, integrated microchips and solar cells. In this work, we first showed analytically the photoconductivity relaxation time of in macroporous silicon is determined from a system of two transcendental equations. The analytical description of the photoconductivity relaxation model contains the diffusion equation solution both in single crystal substrate and in an effective medium of macroporous layer, as well as boundary conditions recorded for the surfaces of the layer of macroporous silicon and single crystal substrate. We showed th

APA, Harvard, Vancouver, ISO, and other styles

41

Alanen, A., P. Nummi, M. Kormano, and K. Irjala. "Proton Tl Relaxation Time of Normal and Abnormal Urine." Acta Radiologica 28, no. 5 (1987): 601–2. http://dx.doi.org/10.1177/028418518702800519.

Full text

Abstract:

Relaxation times Tl of normal and abnormal urine samples were measured with a 0.02 tesla MRI device in a spectrometric mode. Protein containing urine from patients with glomerulonephritis showed a slight shortening of Tl relaxation time. Radiographic contrast medium, pH, osmolality or glucose in diabetes did not significantly change the Tl relaxation time of urine. Urine can be used as a T1 relaxation reference in MR imaging of the pelvis even if the patient has received radiographic contrast medium or has diabetes or proteinuria for any reason.

APA, Harvard, Vancouver, ISO, and other styles

42

Doss, Karan, Collin J. Wilkinson, Yongjian Yang, Kuo‐Hao Lee, Liping Huang та John C. Mauro. "Maxwell relaxation time for nonexponential α‐relaxation phenomena in glassy systems". Journal of the American Ceramic Society 103, № 6 (2020): 3590–99. http://dx.doi.org/10.1111/jace.17051.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Zhang, Yang, Jintao Zheng, Zaiyang Yu, Zhiqiang Xiong, Zhiguo Wang, and Hui Luo. "Measurement of longitudinal nuclear spin relaxation time in NMR gyroscope by real-time monitoring." AIP Advances 12, no. 9 (2022): 095221. http://dx.doi.org/10.1063/5.0106483.

Full text

Abstract:

In the atomic cell of a nuclear magnetic resonance gyroscope, a transverse bias field is applied to enable the in situ alkali magnetometer to sense the variations in the longitudinal magnetic field. During a single relaxation process of the noble gas, the longitudinal relaxation time is obtained by monitoring and fitting the signal of the magnetometer in real-time. The relaxation times measured using our method are nearly identical to those obtained using the conventional delayed pulse method, but in contrast, our method saves ∼90% of the time. By using the new method, fast and accurate batch

APA, Harvard, Vancouver, ISO, and other styles

44

Houmard, J. A., R. Smith, and G. L. Jendrasiak. "Relationship between MRI relaxation time and muscle fiber composition." Journal of Applied Physiology 78, no. 3 (1995): 807–9. http://dx.doi.org/10.1152/jappl.1995.78.3.807.

Full text

Abstract:

The relationship between nuclear magnetic resonance relaxation time obtained with magnetic resonance imaging (MRI) and muscle fiber composition of the lateral gastrocnemius was examined in 13 men. There was a positive correlation (r = 0.80, P < or = 0.001) between longitudinal relaxation time and the relative percentage of slow-twitch muscle fibers (type I). There was no relationship between transverse relaxation time and type I percentage (r = 0.17, P = 0.57). These results suggest that MRI longitudinal relaxation time can be used for the noninvasive estimation of muscle fiber composition

APA, Harvard, Vancouver, ISO, and other styles

45

Keilson, Julian, and Ravi Ramaswamy. "The Relaxation time for truncated birth-death processes." Probability in the Engineering and Informational Sciences 1, no. 4 (1987): 367–81. http://dx.doi.org/10.1017/s0269964800000462.

Full text

Abstract:

The relaxation time for an ergodic Markov process is a measure of the time until ergodicity is reached from its initial state. In this paper the relaxation time for an ergodic truncated birth-death process is studied. It is shown that the relaxation time for such a process on states {0,1, …, N} is the quasi-stationary exit time from the set {,2, …, N{0,1,…, N, N + 1} with two-sided absorption at states 0 and N + 1. The existence of such a dual process has been observed by Siegmund [15] for stochastically monotone Markov processes on the real line. Exit times for birth- death processes with two

APA, Harvard, Vancouver, ISO, and other styles

46

Stankiewicz, Anna. "Two-Level Scheme for Identification of the Relaxation Time Spectrum Using Stress Relaxation Test Data with the Optimal Choice of the Time-Scale Factor." Materials 16, no. 9 (2023): 3565. http://dx.doi.org/10.3390/ma16093565.

Full text

Abstract:

The viscoelastic relaxation spectrum is vital for constitutive models and for insight into the mechanical properties of materials, since, from the relaxation spectrum, other material functions used to describe rheological properties can be uniquely determined. The spectrum is not directly accessible via measurement and must be recovered from relaxation stress or oscillatory shear data. This paper deals with the problem of the recovery of the relaxation time spectrum of linear viscoelastic material from discrete-time noise-corrupted measurements of a relaxation modulus obtained in the stress re

APA, Harvard, Vancouver, ISO, and other styles

47

SHAN, XIAOWEN, and HUDONG CHEN. "A GENERAL MULTIPLE-RELAXATION-TIME BOLTZMANN COLLISION MODEL." International Journal of Modern Physics C 18, no. 04 (2007): 635–43. http://dx.doi.org/10.1142/s0129183107010887.

Full text

Abstract:

We formulate a simple extension to the Bhatnagar-Gross-Krook collision model by expanding the distribution function in Hermite polynomials and assigning a relaxation time to each hydrodynamic moment. By discretizing the velocity space, multiple-relaxation-time lattice Boltzmann models can be constructed. The transport coefficients are analytically calculated and numerically verified. At the lowest order, allowing different relaxation rates for the second and third Hermite components results in a variable Prandtl number. Comparing with the previously proposed multiple-relaxation-time lattice Bo

APA, Harvard, Vancouver, ISO, and other styles

48

Namboodiri, P. M. S. "The relaxation time in spherical galaxy simulations." Symposium - International Astronomical Union 208 (2003): 433–34. http://dx.doi.org/10.1017/s0074180900207626.

Full text

Abstract:

The relaxation time of a spherical galaxy with various density distributions has been evaluated using numerical simulations. The results indicate that the relaxation time is weakly dependent on the density of the galaxies in these simulations.

APA, Harvard, Vancouver, ISO, and other styles

49

Bober, Zuzanna, Piotr Bar, Grzegorz Pasternak, et al. "Infliximab MRI relaxation time in solution." European Journal of Clinical and Experimental Medicine 17, no. 1 (2019): 22–25. http://dx.doi.org/10.15584/ejcem.2019.1.4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Ye, Hong, G. W. Wicks, and P. M. Fauchet. "Hot electron relaxation time in GaN." Applied Physics Letters 74, no. 5 (1999): 711–13. http://dx.doi.org/10.1063/1.122995.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!