Results 21 to 30 of about 1,017,506 (258)

Component wave calculation and analysis of the acoustic field in a borehole within a three-phase porous medium

open access: yesScientific Reports, 2023
The knowledge of acoustic wave propagation in a borehole embedded in gas hydrate-bearing sediments is of great significance for the exploitation of gas hydrate.
Lin Liu   +4 more
doaj   +1 more source

Effective algebraic geometry and normal forms of reversible mappings [PDF]

open access: yes, 2002
We present a new method to compute normal forms, applied to the germs of reversible mappings. We translate the classification problem of these germs to the theory of ideals in the space of the coefficients of their jets.
Jacquemard, A., Teixeira, M.A.
core   +2 more sources

Integrated Estimation of a Cyber-Physical System’s Sustainability

open access: yesEnergies, 2022
Currently, in conditions of Industry 4.0, the use of cyber-physical systems in various fields is becoming widespread. This article is devoted to the problem of estimating CPS sustainability in the context of modern challenges faced by decision makers and
Elena Schislyaeva   +4 more
doaj   +1 more source

Reaction dynamics of P(4S) + O2(X3Σg)  →  O(3P) + PO(X2Π) on a global CHIPR potential energy surface of PO2(X2A1): implications for atmospheric modelling [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
The reaction dynamics of P(4S) + O2(X3Σg-) → O(3P) + PO(X2Π) are thought to be important in atmospheric and interstellar chemistry. Based on the state-of-the-art ab initio energy points, we analytically constructed a global potential energy surface (PES)
G. Chen   +6 more
doaj   +1 more source

On one nonlocal problem for the Euler-Darboux equation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
The boundary value problem with displacement is determined for the generalized Euler-Darboux equation in the field representing the first quadrant. This problem, unlike previous productions, specifies two conditions, connect integrals and fractional ...
Irina N Rodionova   +2 more
doaj   +1 more source

Medical and psychological support and psycho-physiological examination of extreme activities specialists

open access: yesУчёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2015
The essence of medical and psychological support is a continuous monitoring of functional and mental state of specialists and the system of mental health interventions aimed at maintaining the optimal level of occupational performance.
A. V. Starkov   +4 more
doaj   +1 more source

An ab initio path integral Monte Carlo simulation method for molecules and clusters: application to Li_4 and Li_5^+ [PDF]

open access: yes, 1998
A novel method for simulating the statistical mechanics of molecular systems in which both nuclear and electronic degrees of freedom are treated quantum mechanically is presented.
Chakravarty, Charusita   +3 more
core   +2 more sources

Pre-Conceptual Design of the Research High-Temperature Gas-Cooled Reactor TeResa for Non-Electrical Applications

open access: yesEnergies, 2022
In line with Polish national activities and research programs investigating non-electrical-reactor use, the national GOSPOSTRATEG-HTR project was launched, aiming at the development of a novel pre-conceptual design of a High-Temperature Gas-cooled ...
Eleonora Skrzypek   +6 more
doaj   +1 more source

Normal integral basis of an unramified quadratic extension over a cyclotomic 2 -extension [PDF]

open access: yesJournal de théorie des nombres de Bordeaux, 2017
Let ℓ be an odd prime number. Let K / ℚ be a real cyclic extension of
Humio Ichimura, Hiroki Sumida-Takahashi
openaire   +1 more source

Singular Higher Order Divergence-Conforming Bases of Additive Kind and Moments Method Applications to 3D Sharp-Wedge Structures [PDF]

open access: yes, 2008
We present new subsectional, singular divergence conforming vector bases that incorporate the edge conditions for conducting wedges. The bases are of additive kind because obtained by incrementing the regular polynomial vector bases with other ...
Graglia R.D, Lombardi, Guido
core   +1 more source

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