The main purpose of the study is to investigate the mechanical properties around an underground gas storage cavern in bedded salt rock. Firstly, considering the characteristics of the salt rock formation in China, the mechanical model was simplified into a hollow cylinder, which containing non-salt interlayer. In terms of elastic theory, Love displacement function was developed, and the elastic general solution of stress and deformation components were obtained after determining the undetermined coefficients. Under the same condition, numerical simulation was carried out. The validity of the elastic general solution is verified by comparing to numerical simulation results. Furthermore, Based on the feasible general elastic solution, viscoelastic solution was obtained through Laplace transformation and inverse Laplace transform, which could provide reference for the study on the stability and tightness of underground gas storage carven during operation to some extent.

CFD (Computational Fluid Dynamics) computations are carried out in order to investigate the flow distribution and its influence on the heat transfer processes in the high-performance heat exchanger. The subject of this investigation is the classical model of the high-performance heat exchanger with elliptical tubes and rectangular fins. It is possible to find the flow domains where the heat transfer conditions are impaired due to the fully developed turbulent flow. Therefore, the considerable thermal loads occur that may cause the breakdown of the heat exchanger. The emphasis of this investigation is put on the zones and the locations where the tubes are not properly fed with liquid, that result in occurrence of cavitation.

There are two basic types of coal mine gases: gas from demethanation of coal deposits, and ventilation gas; containing combustible ingredients (mainly methane, CH4). Effective use of these gases is an important technical and ecological issue (greenhouse gas emissions), mainly due to the presence of methane in these gases. Serious difficulties in this area (e.g. using them as the fuel for internal combustion (IC) engine) occur mainly in relation to the ventilation gas, whereas the gas from demethanation of coal deposits can be used directly as the fuel for internal combustion engines. The proposed solution of this problem shows that the simple mixing of these two gases (without supplying of oxygen from ambient air) is the effective way to producing the gaseous combustible mixture, which can be used for the fueling of internal combustion gas engines. To evaluate the energy usefulness of this way produced combustible mixture the process indicator has been proposed, which expresses the share of the chemical energy supplied with the ventilation gas, in the whole chemical energy of the produced fuel combustible mixture. It was also established how (e.g., by appropriate choice of the mixed gas streams) can be achieved significantly higher values of the characteristic process indicator, while retaining full energy usefulness of the gained gaseous mixture to power combustion engines.

Secularity is a historical product of modern ages that signaled a diminishing role of transcendence in public as well as individual life, changing effectively the common understanding of key social institutions: economy, state, knowledge, the family, religion. It may take on the form of a neutral lack of transcendence in public life and personal orientation (secularization); it can also appear as an active ideological presence – an ambitious project to remove any reference to transcendence from public life in view of creating “a religion free zone” (secularism). In the first case secularity comes about as a result of a civilization process of subtraction, in which religion melts under the pressure of modern technology, science, economy, a new philosophical orientation, and political frameworks. In the second one, it assumes the form of a bellicose ideology which implies a specific agenda of actions against religion. Secularity came into being as an outcome of philosophical, cultural and political shifts that strived to free individuals from being subjects of the old moral order, and make them inde-pendent autonomous agents that live in the unprecedented conditions of novus ordo seculorum and secular, ordinary time.

There are three Latin texts of the Bible. The ancient vetus latina version used by the Christian writers before Jerome, the Vulgate of st. Jerome and the Neo-Vulgate. Our article deals with the formation and the characteristic features of each version and a special impact the Vulgate had on the Christian literature. We focus our presentation on three periods: the golden age of the patristic literature in the IV- V centuries; the transitional period in the VI-VII centuries and the middle ages, mainly XII-XIII centuries. We present the authors of the most important commen- taries, sermons and other works connected with the Bible and approach some problems connected with the interpretation and meaning of Scripture.