Results 21 to 30 of about 391,141 (265)

Dynamic Susceptibility of Ferrofluids: The Numerical Algorithm for the Inverse Problem of Magnetic Granulometry

open access: yesMathematics, 2021
The size-dependent properties of magnetic nanoparticles (MNP) are the major characteristics, determining MNP application in modern technologies and bio-medical techniques.
Alexey O. Ivanov, Vladimir S. Zverev
doaj   +1 more source

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

open access: yesMaterials 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   +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

open access: yesFrontiers 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   +6 more
doaj   +1 more source

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

open access: yesPhotonics, 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

open access: yesEnergies, 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   +3 more
doaj   +1 more source

Influence of relaxation times on heat transfer in human head exposed to microwave frequencies

open access: yesJournal of Thermal Engineering, 2021
The electromagnetic energy carried by microwaves interacts with human head and produces thermal changes within the head. Conventionally, Pennes’ bioheat transfer equation (BTE) is employed to investigate the thermal changes in biological tissues. Pennes’
Jagbir KAUR, Suyeb KHAN
doaj   +1 more source

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

open access: yesFrontiers 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   +8 more
doaj   +1 more source

Timed Automata Relaxation for Reachability [PDF]

open access: yes, 2021
AbstractTimed automata (TA) have shown to be a suitable formalism for modeling real-time systems. Moreover, modern model-checking tools allow a designer to check whether a TA complies with the system specification. However, the exact timing constraints of the system are often uncertain during the design phase.
Jaroslav Bendík   +3 more
openaire   +1 more source

Dynamic properties of NH_3CH_2COOH·H_2PO_3 ferroelectric

open access: yesCondensed Matter Physics, 2018
Using a modified pseudospin model of NH_3CH_2COOH·H_2PO_3 ferroelectric taking into account the piezoelectric coupling with strains ε_i, ε_4, ε_5 and ε_6 within Glauber method in two-particle claster approximation, we have calculated components of ...
I.R. Zachek   +3 more
doaj   +1 more source

Dielectric Study of Lithium and Sodium Borophosphate Glasses

open access: yesCommunications, 2017
Ionic conductivity and dielectric properties such as dielectric permittivity and loss tangent for the samples of lithium and sodium borophosphate glasses were investigated using the electrical conductivity measurements in the range of frequency from 10 ...
Jana Mizerakova   +2 more
doaj   +1 more source

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