Results 21 to 30 of about 838,775 (308)

On the Theory of Relaxation [PDF]

open access: yesProceedings of the Glasgow Mathematical Association, 1953
§ 1. When a numerical method of obtaining an approximate solution of a linear differential equation is employed, the process involves two distinct types of approximation. The region of integration having been covered with a regular net, the differential equation and the appropriate boundary conditions are replaced by finite difference equations which ...
Mitchell, A. R., Rutherford, D. E.
openaire   +1 more source

Relaksasi dengan Berzikir Menurunkan Tekanan Darah Lansia Hipertensi yang Mengikuti Senam Lansia

open access: yesJurnal Kesehatan, 2022
Based on the results of Rikesdas 2018, the prevalence of elderly hypertension is 55.2% in the 55-64 age category, and 63.2% in the 65-74 age category. Hypertension can cause damage to the kidneys, heart, and blood vessels and can even cause death.
Agung Riyadi   +2 more
doaj   +1 more source

Reorganization of the Brain and Heart Rhythm During Autogenic Meditation

open access: yesFrontiers in Integrative Neuroscience, 2014
The underlying changes in heart coherence that are associated with reported EEG changes in response to meditation have been explored. We measured EEG and heart rate variability (HRV) before and during autogenic meditation.
Dae-Keun eKim   +4 more
doaj   +1 more source

Vanillin Induces Relaxation in Rat Mesenteric Resistance Arteries by Inhibiting Extracellular Ca2+ Influx

open access: yesMolecules, 2022
Vanillin is a phenolic aldehyde, which is found in plant species of the Vanilla genus. Although recent studies have suggested that vanillin has various beneficial properties, the effect of vanillin on blood vessels has not been studied well.
Sooyeon Choi   +5 more
doaj   +1 more source

Temperature dependence of relaxation spectra for highly hydrated gluten networks [PDF]

open access: yes, 2010
In the present investigation, the temperature dependence (0e50 C) of the relaxation spectrum of hydrated gluten was studied using novel numerical algorithms. Tikhonov regularization, in conjunction with the L-curve criterion for optimal calculation of
Kasapis, Stefan, Kontogiorgos, Vassilis
core   +1 more source

Spin relaxation and carrier recombination in GaInNAs multiple quantum wells [PDF]

open access: yes, 2007
Electron spin relaxation and carrier recombination were investigated in gallium indium nitride arsenide (GaInNAs) multiple quantum wells, using picosecond optical pulses.
Reith, Charis
core   +2 more sources

Low-field NMR investigations on dynamics of crude oil confined into nanoporous silica rods and white powder

open access: yesFrontiers in Chemistry, 2023
In the present study, to mimic the natural confinement of crude oils, model experiments are conducted with crude oils having different physical properties and maltenes of parent crude oils without asphaltenes confined into engineered nanoporous silica ...
Salim Ok
doaj   +1 more source

A Comparative Study: Progressive Muscle Relaxation, Autogenic Training, EMG Biofeedback, And Self-Relaxation

open access: yes, 2022
The role of biofeedback and relaxation has been given widespread attention in the treatment of stress related disorders. Procedural and individual differences were investigated to determine main effects of treatment and personality and interactions ...
Neerja Swaroop Bhatnagar (22020140)
core   +1 more source

THE CHOICE OF RELAXATION IN DESCRIBING MECHANICAL CHARACTERISTICS OF HIGH TEMPERATURE AREA OF DISSIPATIVE LOSS IN THE SPECTRUM OF INTERNAL FRICTION

open access: yesТонкие химические технологии, 2017
The analysis of experimental internal friction spectrum tgδ - f(T) shows that monocrystalline metallic materials possess the simplest spectrum. For those materials, dissipation of a part of the energy of external power impact exists in a form of internal
A. A. Valishin   +3 more
doaj   +1 more source

Relaxation and physicomechanical characteristics of polyethylenes with different molecular weights

open access: yesТонкие химические технологии, 2019
Objectives. Determination of the influence of molecular weight on the modulus of elasticity, yield, strength, and retardation processes in polyethylene.Methods.
R. A. Alekhina   +3 more
doaj   +1 more source

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