O chem oni - sredneaziatskie rukopisi Armini Vamberi

The National Széchényi Library bought Desiderius Erasmus’ famous work, the Institutio principis Christiani printed in Basel in 1516 by Johann Froben at an auction organized by the Borda Antiquarian Bookshop in 1994. Erzsébet Muckenhaupt has demonstrated that this book was bound in leather in the same bookbinding workshop as two early 16th century Hungarian-language manuscripts, codices Lányi and Apor. The Erasmus volume was restored and fragments of prints were discovered in its binding in 2004. In the first part of the paper, I present the bibliographical data of the host book and of the six print fragments used as binder’s waste. In the second part of the study, I analyse the six works from the point of view of content and form. I try to find out whether the fragments are related somehow, from where the bookbinders acquired them, and whether the fact that the publishing of three of the prints used as binder’s waste was connected to the booksellers of Buda is more than mere accident. In answering these questions, I resort to the content analysis of the volumes which were bound at the same place as the Lányi Codex in order to find out more about the bookbinding workshop where the analysed fragments were used as binder’s waste. All these suggest that the group of volumes related to the Lányi Codex with regard to their binding were bound in a workshop operated by or in close contact with the booksellers of Buda.

Molar balances of continuous and batch reacting systems with a simple reaction are analyzed from the point of view of finding relationships between the thermodynamic driving force and the chemical reaction rate. Special attention is focused on the steady state, which has been the core subject of previous similar work. It is argued that such relationships should also contain, besides the thermodynamic driving force, a kinetic factor, and are of a specific form for a specific reacting system. More general analysis is provided by means of the non-equilibrium thermodynamics of linear fluid mixtures. Then, the driving force can be expressed either in the Gibbs energy (affinity) form or on the basis of chemical potentials. The relationships can be generally interpreted in terms of force, resistance and flux.

Knowledge of glass forming ability (GFA) of amorphous metallic alloys is very important from both theoretical and practical point of view. Thermodynamically, the Gibbs free energy difference, ΔG between the undercooled liquid and the corresponding crystalline state is driving force for crystallization. As a consequence, it is a good indicator for glass forming ability of metallic glasses. A novel expression for ΔG has been used to estimate the GFA of recently developed Ca-based bulk metallic glasses viz. Ca53Mg23Cu24,Ca65Mg15Cu20,Ca40Mg25Cu35, Ca50Mg22.5Cu27.5 and Ca55Mg15Cu30. Different GFA criteria are also evaluated for systems taken up in the study and effect of addition of variation in composition of Ca-Mg-Cu system is also investigated. Present work suggests that among different GFA criteria, ΔG is the best criterion for the prediction of GFA for Ca-based bulk metallic glasses.

Article analyzes tractor working and its engine conditions from economical point of view. Overview of tractor wheel slippage reliance on the traction force and weight utilization coefficient is given. Tractor maximum driving force according to road and field conditions, and driving speed are submitted. Literature and theoretical investigation analysis is done, where interaction between tractor wheels made‐up driving force and grip is analysed. Driving speed and driving force dependence on rolling resistance and total aggregate weight using nominal power is described. In the present experimental research reduction in fuel consumption of tractor transport aggregate by reducing engine speed and by keeping the same work speed, was determined.

The article is devoted to the consideration of such a phenomenon as a revolution in the development of Russian statehood. The main purpose of the article is to reflect on the historical parallels of a revolution, regular shifts in the resultant political changes in the country, and the transformation of Russia’s role in the world arena. So it happened, but the statehood of Russia was built on revolutions and coups. From a historical point of view, the revolutionary actions of 1917, which brought about the collapse of Russian capitalism, are a result of the domestic political situation in Russia in those years. Such a radical transformation as a revolution is always accompanied by an uncontrolled and at the same time rapid reorientation of the entire course of the country and, hence, the predetermination of its future for the years to come. The social strata, and sometimes even whole estates, which to some extent did not suit the state of affairs within the country has always been the driving force of the revolution. The spirit of rebelliousness and emotional upheaval for his Fatherland in the years of hardships has always been in the nature of a Russian person. Any state like a structure has a critical safety margin. Russia with its rich heritage and diverse internal political currents will always be at risk of a revolution. Careful attention should be paid to the obsolescence of state structures, which, in view of their strategic importance, must be preserved. It is necessary not only to preserve the unshakable, but also to improve from considerations of temporary changes the institutions of social assistance, electivity, democracy, family values, freedom of opinions, personal inviolability, etc.

Examination is a driving force for determining the future of schooling and learning. The future of education in Nigeria is being endangered by examination malpractices which seem to have defied solutions, as all measures applied so far have been undermined by fraudsters. The purpose of this paper therefore is to bring to light the various ways and means by which Librarians in Nigeria could enhance a seamless transition from academic dishonesty/misconduct to honest work that leads to great success. The paper thus discusses examination malpractices in its various dimensions. The devastating effects of examination malpractices on students’ educational growth and development, educational institutions and the society as a whole are also highlighted. The roles of libraries and librarians in curbing this societal menace are also discussed while recommendations for its alleviation, if not total elimination from the Nigerian educational system are proffered from a librarian’s point of view.

Microcrystalline cellulose (MCC) is a chemically pure product of cellulose mechano-chemical conversion. It is a white powder composed of the short fragments of the plant cells widely used in the modern food industry and pharmaceutics. The acid hydrolysis of the bleached lignin-free cellulose raw is the main and necessary stage of MCC production. For this reason, the acid hydrolysis is generally accepted to be the driving force of the fragmentation of the initial cellulose fibers into MCC particles. However, the low sensibility of the MCC properties to repeating the hydrolysis forces doubting this point of view. The sharp, cleave-looking edges of the MCC particles suggesting the initial cellulose fibers were fractured; hence the hydrolysis made them brittle. Zhurkov showed that mechanical stress decreases the activation energy of the polymer fracture, which correlates with the elevated enthalpy of the MCC thermal destruction compared to the initial cellulose.

In a paper previously published by the authors, kinematic analysis of a jack mechanism driven by a motor tetrad was done. For the actual design of the mechanism, the forces and moments acting on the kinematic elements that are part of it must be determined. Also, the driving force in the hydraulic cylinder must be determined, so that the mechanism works in good conditions, for a certain technological task imposed by the design theme. The present paper makes the kinetostatic analysis of the mechanism studied, from the kinematic point of view. Therefore, the reactions in the kinematic couplings of the mechanism, as well as the driving force of the hydraulic cylinder, are determined. In order to determine the reactions of the kinematic couplings, as well as the driving force of the hydraulic cylinder, the masses of the elements, the moments of mechanical inertia, as well as the load force acting on the jack were considered. The results of the calculations were graphically represented, in reaction patterns. In order to verify the correctness of the calculations, the balance force (the hydraulic cylinder motor force) was determined by both the kinetic and the virtual power method, and the results are the same.

We investigate how compressibility affects the turbulent statistics from a Lagrangian point of view, particularly in the parameter range where the flow transits from the incompressible type to a state dominated by shocklets. A series of three-dimensional simulations were conducted for different types of driving and several Mach numbers. For purely solenoidal driving, as the Mach number increases a new self-similar region first emerges in the Lagrangian structure functions at sub-Kolmogorov time scale and gradually extends to larger time scale. In this region the relative scaling exponent saturates and the saturated value decreases as the compressibility becomes stronger, which can be attributed to the shocklets. The scaling exponent for the inertial range is still very close to that of incompressible turbulence for small Mach number, and discrepancy becomes visible when the Mach number is high enough. When the driving force is dominated by the compressive component the shocklet-induced self-similar region occupies a much wider range of time scales than that in the purely solenoidal driving case. Regardless of the type of driving force, the probability density functions of the velocity increment collapse onto one another for the time scales in the new self-similar region after proper normalization.

The authors consider new approaches to the study of the role of the passionate personality in the development of the countries of the East. The authors consider the socio-political and scientific activities of the scientist A. Zh. Mashanov as a passionary from the point of view of influence on the ethno-cultural code of the Kazakhs. The concepts of "historical process" and "political process" are clarified; the relationship between history and politics is revealed. The verbal-paraverbal methods of A. Zh. Mashanov in political activity are shown. The contribution of the scientist as a driving force during the historical process is revealed and described the role of the scientist as a catalyst for the spiritual revival of Kazakhstan in connection with the relentless struggle for the study of al-Farabi's creativity as a cultural and spiritual source is determined.