Xem 1-20 trên 158 kết quả Formation mechanism
  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: ZnSe nanotrenches: formation mechanism and its role as a 1D template

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  • An automatic essay paraphrasing system, written in JOVIAL, produces essay-like paraphrases of input texts written in a subset of English. The format and content of the essay paraphrase are controlled by an outline that is part of the input text. An individual sentence in the paraphrase may often reflect the content of several sentences in the input text. The system uses dependency rather than transformational criteria, and future versions of the system may come to resemble a dynamic implementation of a stratificational model of grammar....

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  • Tham khảo sách 'draftdraft lecture notesintroduction to mechanics of materials fundamentals', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • The purpose of this book remains what it was in the first seven editions: to present the fundamental principles and facts of human physiology in a format that is suitable for undergraduate students, regardless of academic backgrounds or fields of study: liberal arts, biology, nursing, pharmacy, or other allied health professions.

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  • .Foundation Flash CS4 for Designers Tom Green and David Stiller .Foundation Flash CS4 for Designers Copyright © 2009 by Tom Green and David Stiller All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher.

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  • Biomimetics is the science of emulating nature’s design. In nature, living organisms synthesize mineralized tissues and this process of biomineralization is under strict biological control. It involves the interactions of several biological macromolecules among themselves and with the mineral components. Generally, natures design principles are based on a “Bott om-Up” strategy. Such processes lead to the formation of hierarchically structured organic-inorganic composites with mechanical properties optimized for a given function.

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  • This chapter presents basic knowledge on the special kind of the machining process in which a workpiece material hardened to 45–70 HRC hardness or more is machined with mixed ceramic or CBN tools. An extended comparison with finish grinding, as well with other abrasive finishing processes, is carried out. Specific cutting characteristics, including cutting forces, chip formation mechanisms and tool wear modes with relevant interface temperatures are discussed in terms of process conditions. Currently developing finite element (FE) and analytical modelling is overviewed.

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  • The first section of the book includes the following topics: fusion-based additive manufacturing (AM) processes of titanium alloys and their numerical modelling, mechanism of ?-case formation mechanism during investment casting of titanium, genesis of gas-containing defects in cast titanium products. Second section includes topics on behavior of the (? + ?) titanium alloys under extreme pressure and temperature conditions, hot and super plasticity of titanium (? + ?) alloys and some machinability aspects of titanium alloys in drilling. ...

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  • Due to the success of the first edition of The Engineering Handbook published in 1995 I am pleased to provide the second edition ten years later fully updated and expanded. Purpose The purpose of The Engineering Handbook, Second Edition is to provide in a single volume a ready reference for the practicing engineer in industry, government, and academia. The book in its comprehensive format is divided into 30 sections which encompass the field of engineering and includes 19 brand new chapters and 131 fully updated contributions.

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  • CHAPTER 21 LUBRICATION OF MACHINE ELEMENTS Bernard J. Hamrock Department of Mechanical Engineering Ohio State University Columbus, Ohio SYMBOLS 21.1 LUBRICATION FUNDAMENTALS 21.1.1 Conformal and Nonconformal Surfaces 21.1.2 Bearing Selection 21.1.3 Lubricants 21.1.4 Lubrication Regimes 21.1.5 Relevant Equations HYDRODYNAMIC AND HYDROSTATIC LUBRICATION 21.2.1 Liquid-Lubricated Hydrodynamic Journal Bearings 21.2.2 Liquid-Lubricated Hydrodynamic Thrust Bearings 21.2.3 Hydrostatic Bearings 21.2.4 Gas-Lubricated Hydrodynamic Bearings 508 512 512 513 516 518 520 21.

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  • During development, cells and tissues undergo dynamic changes in pattern and form that employ a wider range of physical mechanisms than at any other time during an organism’s life. Biological Physics of the Developing Embryo presents a framework within which physics can be used to analyze these biological phenomena. Written to be accessible to both biologists and physicists, major stages and components of biological development are introduced and then analyzed from the viewpoint of physics. The presentation of physical models requires no mathematics beyond basic calculus.

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  • Most colleges and universities now have courses and degree programs related to materials science. Materials Chemistry addresses inorganic, organic, and nanobased materials from a structure vs. property treatment, providing a suitable breadth and depth coverage of the rapidly evolving materials field in a concise format.

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  • This book is a collection of 29 excellent works and comprised of three sections: task oriented approach, bio inspired approach, and modeling/design. In the first section, applications on formation, localization/mapping, and planning are introduced. The second section is on behavior-based approach by means of artificial intelligence techniques. The last section includes research articles on development of architectures and control systems.

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  • The applications of underwater vehicles have shown a dramatic increase in recent years, such as, mines clearing operation, feature tracking, cable or pipeline tracking and deep ocean exploration. According to different applications, the mechanical and electrical configuration and shape of an underwater vehicle are different. For instance, manipulators are necessary when doing mines clearing operation or some other tasks which need to deal with environment.

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  • Elsevier Butterworth-Heinemann Linacre House, Jordan Hill, Oxford OX2 8DP 30 Corporate Drive, Burlington, MA 01803 First published in France 2001 by Hermes Science, entitled ‘Modélisation des systèmes mécaniques, systèmes continus, Tome 2’ First published in Great Britain 2005 Copyright © 2005, Elsevier Ltd.

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  • The historical background of probiotics can be traced back to when the first definition of probiotic bacteria was given by Russian scientist Elie Metchnikoff who stated that probiotics are considered to exert a beneficial effect on the host. This was confirmed later on by an official statement by FAO/WHO. In their reviews, two group of investigators Matur et al. and Boaventura et al., presented the impact of probiotics on the physiology of the GIT and the underlying mechanism of action of this microflora and the benefits derived with the use of probiotics in human and animal nutrition.

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  • "The Arguments of Agriculture is a delightful read for both the specialist and the person just getting to know the increasingly contested terrains of agricultural policy and ideology. The approach is even-banded, insightful, and faithful to diverse claims." - Frederick H. Buttel "Its well-planned format makes the book particularly useful for studying the philosophy, sociology, or economics of agricultural industry, as well as for environmental studies." - ENVIRONMENT

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  • In describing her art, Louise Nevelson has written: “I do not belong to any movement. As my work is related to the present time, it is bound to be related to that of others, consciously or not....” Her art may be more closely related to her collections of African art, American farm tools, architectural elements, and diverse other fragments of the past and her attraction to the art and architecture of pre-Columbian Mexico and Central America.

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  • Provide a vocabulary to describe complex resource bundles. In any system, be it administrative or market- based, users need a mechanism to express their resource holdings and desires. Markets, which have been used for decades to capture difficult resource allocation problems (e.g. energy markets, wireless spectrum auctions, airline landing slot exchanges), can also be used to capture the intricacies of systems problems.

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  • where V is the volume worn away, W is the normal load, x is the sliding distance, H is the hardness of the surface being worn away, and k is a nondimensional wear coefficient dependent on the materials in contact and their exact degree of cleanliness. The term k is usually interpreted as the probability that a wear particle is formed at a given asperity encounter. Equation (21.5) suggests that the probability of a wear-particle formation increases with an increase in the real area of contact, Ar (Ar = W=H for plastic contacts), and the sliding distance. ...

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