Mechanochemistry of Materials

E.M. Gutman

Cambridge International Science Publishing

Manganese in Powder Metallurgy Steels

This work in three parts presents a summary of the sintered manganese steel properties from 1948 to 2011 involving processing conditions and other characteristics. In the first and third part are given results attained by the authors based on their finding that manganese (cheapest element) during sintering evaporates and by this the vapour cleans the sintering atmospheres from humidity. The second part presents other positive properties of manganese steels in spite of the doubt of oxidation of manganese during sintering and by this excluding the sintering manganese steels what hinderd the use of manganese in production of sintered parts. All results confirm that only manganese vapour according to finding of the authors ensures effective sintering of manganese steels and parts independently on the authors mind. It follows finally from the work that manganese is possible to use for alloying of powder steels sintered also in practice in H/N atmospheres with low purity and also in pure nitrogen - cheaper than hydrogen without some of the associated problems. Current trends in the field are also presented to the reader.

Science & Math

Šalak, Andrej

Selecká, Marcela

Chemistry

Similarity and Modeling in Science and Engineering

The present text sets itself in relief to other titles on the subject in that it addresses the means and methodologies versus a narrow specific-task oriented approach. Concepts and their developments which evolved to meet the changing needs of applications are addressed. This approach provides the reader with a general tool-box to apply to their specific needs. Two important tools are presented: dimensional analysis and the similarity analysis methods. The fundamental point of view, enabling one to sort all models, is that of information flux between a model and an original expressed by the similarity and abstraction Each chapter includes original examples and applications. In this respect, the models can be divided into several groups. The following models are dealt with separately by chapter; mathematical and physical models, physical analogues, deterministic, stochastic, and cybernetic computer models. The mathematical models are divided into asymptotic and phenomenological models. The phenomenological models, which can also be called experimental, are usually the result of an experiment on an complex object or process. The variable dimensionless quantities contain information about the real state of boundary conditions, parameter (non-linearity) changes, and other factors. With satisfactory measurement accuracy and experimental strategy, such models are highly credible and can be used, for example in control systems.

Computers & Technology

Kuneš, Josef

Computer Science

The present text reflects developments in the literature on nonlinear systems, while retaining a reader-friendly presentation. It has been developed from problems on nonlinear differential equations given over several years in the nonlinear dynamics team  at the Mechanical Department of Babol Noshirvani University of Technology.  A large variety of applied processes in both linear and nonlinear forms for important nonlinear differential equations are covered, enabling readers to  solve  problems without needing  to refer to other sources.  An introduction to  systems in the context of nonlinear differential equations is provided and is suitable for courses of varying emphasis. The chapters  are designed to be self-contained so readers can easily navigate to the material of interest.  Emphasis is given to direct applications of the subject matter, and will therefore be of particular  interest  to students of engineering, mathematics and the natural sciences.  The most recent analytic methods and developments are included and  over 300 references are given. In addition to discussing  linear and nonlinear problems, demonstrated solutions  are provided.

Nonlinear Equations: Analytical Methods and Applications

Ganji, Davood Domairry

Kachapi, Seyed Habibollah Hashemi

Mathematics

This book addresses means and methodologies, discussing concepts and their developments which evolved to meet the changing needs of applications, and providing a widely applicable general tool-box . Covers dimensional analysis and similarity processes.

This work reviews sintered manganese steel properties from 1948 to 2011 including processing conditions and such characteristics as use of manganese in H/N atmospheres with low purity and in pure nitrogen - cheaper than hydrogen without associated problems.

Aethereal Multiverse

Łukasz Andrzej Glinka

Theoretical Fundamentals of Atmospheric Optics

Yu M. Timofeyev A V Vasil'ev

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