Документы 21 - 30 из 5003
21.

Количество страниц: 10 с.

We have studied the process of artificial methane hydrates obtaining in static conditions from distilled and "secondary" water (prepared by the decomposition of methane hydrate), as well as the additional metal surface using inside of cameras. It was found dependence from the type of the liquid phase and the presence/absence of additional metal surface inside the camera; in the same initial conditions of temperature and pressure, it can be obtained samples with different degrees of transformation of the "water-gas" to hydrate and various crystalline morphology.

Semenov, M. E. Study of the methane hydrates obtaining process in static conditions / M. E. Semenov, E. Yu. Shitz // Нефтегазовое дело. - 2012, N 5. - С. 466-474.

22.

Количество страниц: 24 с.

Riesz potentials are convolution operators with fractional powers of some distance (Euclidean, Lorentz or other) to a point. From application point of view, such potentials are tools for solving differential equations of mathematical physics and inverse problems. For example, Marsel Riesz used these operators for writing the solution to the Cauchy problem for the wave equation and theory of the Radon transform is based on Riesz potentials. In this article, we use the Riesz potentials constructed with the help of generalized convolution for solution to the wave equations with Bessel operators. First, we describe general method of Riesz potentials, give basic definitions, introduce solvable equations and write suitable potentials (Riesz hyperbolic B-potentials). Then, we show that these potentials are absolutely convergent integrals for some functions and for some values of the parameter representing fractional powers of the Lorentz distance. Next we show the connection of the Riesz hyperbolic B-potentials with d’Alembert operators in which the Bessel operators are used in place of the second derivatives. Next we continue analytically considered potentials to the required parameter values that includes zero and show that when value of the parameter is zero these operators are identity operators. Finally, we solve singular initial value hyperbolic problems and give examples.

Shishkina, E. L. Method of Riesz potentials applied to solution to nonhomogeneous singular wave equations / E. L. Shishkina, S. Abbas // Математические заметки СВФУ. — 2018. — Т. 25, N 3 (99), июль-сентябрь. — С. 68-91.
DOI: 10.25587/SVFU.2018.99.16952

23.
Автор:

Количество страниц: 12 с.

This article discusses criteria for comparing the effectiveness of energy resources. It focuses on the interrelationship between the effectiveness of energy resources and movement from one technological stage to another. What emerges is the consistent pattern of change in existing technologies, and increasingly evident is that, at their current stage of development, neither nano- nor biotechnology will lead to an evolution from the current and fifth technological stage to a sixth. Of note is that at present oil remains the key energy resource, which means that in the near future peak oil will force us to confront an unprecedented event in industrial history: energy degradation, which can be viewed as a regressive movement in the existing technological stage.

Sokolov, A. N. The effectiveness of energy resources and successive technological stages / A. N. Sokolov // Нефтегазовое дело. - 2011, N 5. - С. 428-438.

24.
Автор:

Количество страниц: 21 с.

Les mots de ce poème, créé en 453, nous sont parvenue grâce à Priscos et Jordanès : "Le plus grand roi des Huns, Attila, fils de Mundzuk, maître des peuples les plus vaillants, qui posséda, seul, les royaumes de Scythie et de Germanie, en vertu d’une puissance jusqu’alors inconnue. Il frappa de terreur chacun des deux empires romains après avoir pris leurs villes et leurs cités, et comme on redoutait qu’il ne s’emparât du reste de ces empires et qu’il l’ajoutât à ses proies, il se laissa touché par les prières et reçut un tribut annuel. Et après avoir réalisé tous ces hauts faits avec bonheur, il a péri, ni sous coups de l’ennemi, ni par la trahison des siens, mais dans la joie et dans les fêtes, au milieu de son peuple intact, sans la moindre douleurs. Qui donc contera son ultime départ, que personne n’aura à venger?"

Tomski G. V. Chant sur Attila: Le plus ancien œuvre daté de la poèsie turco-mongole / Tomski G. V. ; Académie Internationale CONCORDE // Concorde. – 2015. – N 5. – С. 56-76.

25.
Автор:

Количество страниц: 12 с.

This introductory paper describes the modular structure of modern Tangrism (Tengrism), practical for all creators of goodwill.
В этой вводной статье описывается модульная структура современного тангризма (тенгризма), практичная для всех создателей доброй воли.

Tomski, G. V. Modular structure of modern Tangrism / Grigori Tomski // Bulletin de l’Académie Internationale CONCORDE. - 2017. – N 1. – С. 3-13.

28.
Автор:

Количество страниц: 42 с.

Tomski, G. V. Les considérations sur la reconnaissance d'Attila en qualité d’un saint du tengrisme (tangrisme) moderne et leur comparaison avec les arguments avancés pour la canonisation de saint louis = Доводы в пользу признания Аттилы святым современного тенгризма (тангризма) и их сравнение с аргументами о канонизации Святого Людовика / Tomski Grigori ; Académie internationale CONCORDE // Concorde. – 2020. – N 2. – С. 32-72.

29.
Автор:

Количество страниц: 24 с.

Tomski, G. V. Analyse tangriste des idees de Vitaly Malkin / Tomski Grigori ; Académie internationale CONCORDE // Concorde. – 2020. – N 3. – С. 3-25.

30.
Автор:

Количество страниц: 12 с.

Tomski, G. V. Empire comanche et empire sakha / Tomski Grigori ; Académie internationale CONCORDE // Concorde. – 2021. – N 2. – С. 27-37.