Mechanical behavior

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  • Most plastic materials are used because they have desirable mechanical properties at an economical cost. For this reason, the mechanical properties may be considered the most important of all the physical and chemical properties of high polymers for most applications. Thus everyone working with such materials needs at least an elementary knowledge of their mechanical behavior and how this behavior can be modified by the numerous structural factors that can be varied in polymers.

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  • Boundaries of Rock Mechanics. Recent Advances and Challenges for the 21st Century contains 180 papers from the International Young Scholars’ Symposium on Rock Mechanics 2008 (Beijing, China, 28 April-2 May 2008). The symposium was organized by the ISRM Commission on Education, and sponsored by the International Society for Rock Mechanics (ISRM) and the Chinese Society for Rock Mechanics and Engineering (CSRME).

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : The influence of a weight-bearing platform on the mechanical behavior of two Ilizarov ring fixators: tensioned wires vs. half-pins

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  • Within the past decade, the emphasis of scientific research worldwide has shifted to the study of the behavior of materials at the atomic scale of matter.

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  • Recently, the use of oral fluids such as GCF, whole saliva and oral rinse as a means of evaluating host-derived products, as well as exogenous components (for instance: oral microorganisms and microbial products), has been suggested as potential sources and diagnostic markers, respectively for disease susceptibility (Sahingur and Cohen 2004; Buduneli and Kinane 2011).

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  • Tham khảo sách 'mechanical properties of engineered materials', 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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  • It has been known from the previous chapter that light, and in general, electromagnetic waves have particle behavior. Some latter time than the quantum theory of light, it was discovered that particles show also wavelike behavior. The wave-particle duality of matter is the fundamental concept of modern physics Newton’s classical physics should be replaced by the new mechanics which is able to describe the wave nature of particles

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  • Soils are aggregates of mineral particles, and together with air and/or water in the void spaces, they form three-phase systems. A large portion of the earth’s surface is covered by soils, and they are widely used as construction and foundation materials. Soil mechanics is the branch of engineering that deals with the engineering properties of soils and their behavior under stress.

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  • The mechanical behavior of materials describes the response of materials to mechanical loads or deformation. The response can be understood in terms of the basic effects of mechanical loads on defects or atomic motion. A simple understanding of atomic and defect structure is, therefore, an essential prerequisite to the development of a fundamental understanding of the mechanical behavior of materials.

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  • J. Angeles, Fundamentals of Robotic Mechanical Systems: Theory, Methods, and Algorithms, 2nd ed. P. Basu, C. Kefa, and L. Jestin, Boilers and Burners: Design and Theory J.M. Berthelot, Composite Materials: Mechanical Behavior and Structural Analysis I.J. Busch-Vishniac, Electromechanical Sensors and Actuators J. Chakrabarty, Applied Plasticity G. Chryssolouris, Laser Machining: Theory and Practice V.N. Constantinescu, Laminar Viscous Flow G.A. Costello, Theory of Wire Rope, 2nd ed. K. Czolczynski, Rotordynamics of Gas-Lubricated Journal Bearing Systems M.S.

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  • Snow-balling technique was used to find further examples in the application of financing mechanisms, contact persons, as well as for finding additional information. Furthermore, also the second questionnaire (see Annex 24) was used as an additional information source. The interviews used a common interview guide which was adapted according to the type of actors interviewed and according to the type of information missing for the description of the single cases.

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  • A variety of scientific disciplines have set as their task explaining mental activities, recognizing that in some way these activities depend upon our brain. But, until recently, the opportunities to conduct experiments directly on our brains were limited. As a result, research efforts were split between disciplines such as cognitive psychology, linguistics, and artificial intelligence that investigated behavior, while disciplines such as neuroanatomy, neurophysiology, and genetics experimented on the brains of non-human animals.

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  • To be more effective, you have to weave together practical tech- niques, core “wisdom” concepts, and basic principles of project man- agement; integrate the “scientific,” technical side of project manage- ment with the interpersonal and intrapersonal behavioral skills that are the real keys to effective performance; and balance the right and left brain to become more effective.

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  • The landmark paper by Gleiter [1] redirected a significant portion of the global research efforts in materials science. The importance of this paper can be gauged by its 1300+ cita- tions and the thousands of papers that appeared on this topic since its publication. Actually, this paper was preceded by an earlier, lesser known Gleiter paper, from 1983 [2]. In this paper, Gleiter points out the outstanding possibilities of what he called then ‘‘microcrystalline materials’’. The name ‘‘nanocrystalline’’ has since taken over.

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  • The type of soil strength characteristic (i.e. the variation of soil strength with soil water content) favourable to crop growth depends on both the amount and the distribution of the annual rainfall, and on the nature of the crop. The soil must have sufficient mechanical strength to provide adequate anchorage for the plant throughout its development, and to prevent the collapse of soil water and air pathways by soil overburden pressure and the weight of vehicle and animal traffic. Dense regions of high strength may limit root growth and crop...

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  • This paper examines the theory of translation in Quine's Word and Object and attempts to show that it involves tacit appeal to a premise concerning a regularity in the behavior of bilinguals. The regularity is one whose existence is neither explained nor rendered probable by the theory.

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  • In the range of high strain rates, the mechanical behaviour of materials is characterized by an increased strain rate sensitivity, by increasing effects of mass inertia forces and by the adiabatic character of the deformation process. For the relation between stress, strain and strain rate, empirical formulae are now mostly replaced by material laws based on structural mechanical models, whose parameters are to be determined by adequate systematic methods. Also special effects such as the influence of strain rate on...

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  • Whereas spark erosion and lasermachining are suitable for any metal, the use of mechanical precision machining and the tools suitable for this type depend on the stability of the alloy. For brass and copper, natural diamondmicrotools are suitable and widely used, while for stainless steel and nickel- based alloys, hardmetal tools are needed. Figure 1.3 shows a natural diamond cutter, whereas Figure 1.4 shows a hard metal drill. Figure 1.5 shows photos of a rhodium honeycombmicrochannel catalyst system.

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  • Tham khảo sách 'supervised tactical mobility behavior modeling and control of multi agent robotic vehicles', 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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