Durch die zunehmende Computerleistung und die Verfugbarkeit fortgeschrittener Modelle entwickelt sich die Simulation von Materialeigenschaften zu einem wichtigen Feld der Werkstoffwissenschaften. Das vorliegende Werk beschreibt ein leistungsfahiges Modell zur Vorhersage der Bildung von schadlichen Sprodphasen (v.a. TCP-Phasen) in Nickelbasis-Superlegierungen. Grundsatzlich ist die Methodik auch auf andere Legierungssysteme anwendbar. Als Grundlage dient dabei die Berechnung der Legierungsthermodynamik und der Diffusionsprozesse mit CALPHAD-basierenden Modellen. Damit kann die Komplexitat der Superlegierungen vollstandig berucksichtigt werden. An mehreren konkreten Fallbeispielen wird die Anwendung des Modells demonstriert. Weiterhin...
ISBN: 978-3-8381-2212-0
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Дата выхода: июль 2011
The mineral processing research community has devoted enormous efforts to the modeling of mineral separators. While many efforts have been made to use only fundamental physics as a basis for the models, fluid flow patterns in separators are complex and the motion of particle swarms through fluids is difficult to describe. Even though computer codes for computational fluid dynamics are now very powerful, a reliable means of calculating the hindered settling velocity of a specific particle type within a polydisperse and polydense particle mixture has proved to be elusive. It is however an absolutely fundamental prerequisite to almost all model structures. In an effort to test the extent to which fundamental fluid mechanics can provide a...
ISBN: 978-3-8383-1680-2
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Дата выхода: июль 2011
Machining induced residual stress has been a research topic since the middle of the twentieth century. Experimental findings, analytical modelling, finite element modelling and various combinations of those have been proposed. Currently, computational models have great value in increasing the understanding of the cutting process and in reducing the number of experiments which traditionally are used for tool design, process selection, machinability evaluation, and virtual manufacturing. This work proposes a coherent and accurate study of the industrial process of machining pointing out the difficulties when considering a finite element model. An extensive work has been carried out comparing the numerical results which can be achieved...
ISBN: 978-3-6392-3997-3
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Дата выхода: июль 2011
Cement manufacturing is one of the most energy intensive processes requiring ~ 4 GJ/ ton of cement. Most of the energy consumption and production of carbon dioxide in cement manufacturing occurs in manufacturing of cement clinkers. It is therefore imperative to use recent advances in understanding of physics and computational methods to improve clinker manufacturing. This book takes first steps in that direction by discussing methodology and state of the art computational models to simulate clinker manufacturing. Aimed at practicing engineers and researchers, this book will give readers a capability to simulate rotary cement kilns and associated equipments. Considering the central role of kilns in clinker manufacturing, there is a...
ISBN: 978-3-6391-1219-1
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! The following list of modern armament manufacturers presents major companies producing modern weapons and munitions. The companies are listed by their full name followed by the short form, or common acronym, if any, in parentheses. The country the company is based in, if the information is available, follows that. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1339-3522-8
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Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! This article lists modern armoured fighting vehicles produced in the listed countries after the Second World War. TAM (tank), ASLAV, ASCOD AFV, Timoney Technology Limited of Ireland, 2T Stalker, EE-3 Jararaca. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1339-1438-4
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Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! The Modified Dall–Kirkham telescope utilizes an elliptical primary and spherical secondary mirror as in the conventional Dall–Kirkham configuration, but also includes two lens elements ahead of the focal point to improve off-axis image quality. The primary mirror conic constant is slightly different than that for a conventional Dall–Kirkham and must be optimized along with the lenses during design. The usable field is much better than the Ritchey– Chretien telescope without corrector, and over very wide spectral bands, typically 0.38 to 0.95 micrometres if the corrector is made of quartz. The Ritchey Chretien System with corrector has a better and bigger field. Данное...
ISBN: 978-6-1341-1489-9
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Дата выхода: июль 2011
This book contains the information on Turbo Code System and suggested modifications to enhance the performance of the system.Research in coding theory has seen many proposals aimed at the construction of powerful codes using block and convolutional codes. Recently, a new forward error control code (FEC) known as Turbo Code is introduced. This new code combines simple component codes with iterative decoding process.Turbo code is adopted as FEC in 3rd Generation Wireless Communication System (UMTS). The name “Turbo” has been coined in analogy to the Turbo engine principle that brings the meaning of powerful. This book specifically describes the process of encoding and decoding turbo codes. A basic discussion of iterative decoding is...
ISBN: 978-3-6390-8215-9
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The modular synthesizer is a type of synthesizer consisting of separate specialized modules connected by wires (patch cords) to create a so-called patch. Every output generates a signal – an electric voltage of variable strength. Combining the signals generated by multiple modules into a common audio output allows a potentially infinite number of configurations, leading to a potentially infinite number of sounds. There exist many different types and sub-types of modules – even modules with the same basic function will have different inputs, outputs and controls on various models. There are some standards...
ISBN: 978-6-1337-3833-1
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A modular rocket is a type of multistage rocket which features components that can be interchanged for specific mission requirements. Several such rockets use similar concepts such as unified modules to minimize expenses on manufacturing, transportation and for optimization of support infrastructure for flight preparations. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1342-5701-5
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Дата выхода: июль 2011
This book presents a wideband GFSK-modulated fractional-N frequency synthesizer which using the two-point delta-sigma modulation (TPDSM). Two bottlenecks in this design have been rigorously investigated. One is the nonlinear performance of fractional-N frequency synthesizers. The other one is the inherent gain and delay mismatch between the two modulation points. Both nonlinear and mismatch factors dominate the modulation accuracy in the closed phase-locked loop (PLL). The proposed formulation can successfully predict the dependencies of the modulation accuracy on both factors. The comparison of the averaged frequency deviation and frequency-shift-keying (FSK) error between theory and measurement shows excellent agreement. The modulated...
ISBN: 978-3-6391-2247-3
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Дата выхода: июль 2011
High Quality Content by WIKIPEDIA articles! The Modular Tactical Vest is a new American body armor, originally adopted by the United States Marine Corps in 2006. The MTV was designed as a solution to shortcomings in the current, decade-old Interceptor body armor and was selected after a rigorous proposal and examination process by the Marine Corps. The MTV provides better protection levels than the Interceptor system, although it uses the same Small Arms Protective Insert plates. The MTV weighs 30 pounds; three more than an Interceptor, but is designed to more effectively distribute its weight throughout the wearer's torso. The Navy also ordered 28,364 MTVs in August 2008. After conducting a survey of more than 1,000 Marines and finding...
ISBN: 978-6-1316-3277-8
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Дата выхода: июль 2011
Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! MOL Group (MOL Nyrt.) is an integrated oil and gas group in Hungary. In addition to Hungary, the company is present in the Europe, the Middle East and Africa region, as also in the CIS countries, with interests in exploration, production, refining, marketing and petrochemicals. MOL employs over 34,000 people internationally and it is a market leader in Hungary and Slovakia. It is the second largest company in Central and Eastern Europe. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1334-2588-0
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Книга по требованию
Дата выхода: июль 2011
Use of magnesium in industry, particularly in automobile industry is consistently increasing. All known casting processes including investment casting can be used for production of magnesium castings. Magnesium, however, reacts practically with all investment casting refractories, from which molds are made of. The research work was carried out a) to investigate the degree of reactions between the various refractory materials and the magnesium alloy AZ91E; b)to find new techniques to reduce these reactions and c)to provide a better understanding of the mold-metal reactions in magnesium investment casting Fused alumina,fused silica, molochite,zircon, yttria, zirconia and fused magnesia were the studied ceramics. Results of the experiments...
ISBN: 978-3-6390-8560-0
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Molding or moulding is the process of manufacturing by shaping pliable raw material using a rigid frame or model called a pattern. A mold or mould is a hollowed-out block that is filled with a liquid like plastic, glass, metal, or ceramic raw materials. The liquid hardens or sets inside the mold, adopting its shape. A mold is the opposite of a cast. The manufacturer who makes the molds is called the moldmaker. A release agent is typically used to make removal of the hardened/set substance from the mold easier. The terminology can depend on the application. Sand casting involves both a "pattern" (which is the positive-image model of the desired part) and a "mold" (which is the negative-image...
ISBN: 978-6-1327-7262-6
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Дата выхода: июль 2011
Ionic liquids (ILs) are an exciting class of compounds with unique properties that make them attractive for industrial applications. Among their valuable features, an immesurably low vapor pressure and a liquid state at or near ambient conditions are found at the top of the list. In this book, thermophysical and transport properties of ionic liquids are theoretically investigated by means of molecular simulation techniques. Quantum calculations are used as a supportive tool to force field development work. This research task is guided and supported by experimental studies. Studied cations include imidazolium-, pyridinium- and triazolium-based structures with different inorganic anions such as hexafluorophosphate,...
ISBN: 978-3-6391-0843-9
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Molecular modeling on GPU is the technique of using a graphics processing unit for molecular simulations. In 2007, NVIDIA introduced video cards that could be used not only to show graphics but also for scientific calculations. These cards include many arithmetic units working in parallel. Long before this event, the computational power of video cards was used to accelerate calculations. What was new is that stream processing made it possible to develop parallel programs in a high-level language. This technology substantially simplified programming by enabling programs to be written in C/C++. Данное издание не является оригинальным. Книга...
ISBN: 978-6-1326-4356-8
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Дата выхода: июль 2011
One of the recent advances in materials science has focused on developing materials that have two or more crystalline systems mixed at the nanoscale. Until now, the development and the analyses of such materials have primarily been experimental. In the current research, a framework based on classical molecular dynamics (MD) is developed for analyzing deformation mechanisms in nanostructural materials consisting of more than one crystalline system. The material system of focus is a combination of fcc-Al and ?-Fe2O3. The framework includes the development of an interatomic potential, a scalable parallel MD code, nanocrystalline composite structures, and methodologies for the quasistatic and dynamic strength analyses. The framework is...
ISBN: 978-3-6391-5858-8
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Книга по требованию
Дата выхода: июль 2011
Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
Molecular electronics is an interdisciplinary theme that spans physics, chemistry, and materials science. The unifying feature of this area is the use of molecular building blocks for the fabrication of electronic components, both passive and active. The concept of molecular electronics has aroused much excitement both in science fiction and among scientists due to the prospect of size reduction in electronics offered by molecular-level control of properties. Molecular electronics provides means to extend Moore's Law beyond the foreseen limits of small-scale conventional silicon integrated circuits. Данное издание не является оригинальным. Книга печатается по технологии...
ISBN: 978-6-1303-0751-6
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Molecular memory is a term for data storage technologies that use molecular species as the data storage element, rather than e.g. circuits, magnetics, inorganic materials or physical shapes. The molecular component can be described as a molecular switch, and may perform this function by any of several mechanisms, including charge storage, photochromism, or changes in capacitance. In a perfect molecular memory device, each individual molecule contains a bit of data, leading to massive data capacity. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения...
ISBN: 978-6-1340-0984-3
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Книга по требованию
Дата выхода: июль 2011
The early physiological, biochemical, and molecular changes that follow harvesting of asparagus were investigated,with the aim of defining and regulating factors contributing to postharvest deterioration. The results showed that(i)induction of ethylene production in harvested asparagus tips is regulated by transcription of pAS-ACO and pAS-ACS in response to the wounding associated with harvest and, (ii)the increase in ammonia content and decrease in total GS activity in both top and bottom portions of the spears is a response to significant stress after harvest,(iii)the induction of PAL activity in harvested asparagus is regulated by transcription of pAS-PAL in response to the wounding,(iv)NBD enhanced the level of activity of ACC...
ISBN: 978-3-6391-8730-4
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Molecular nanotechnology (MNT) is the concept of engineering functional mechanical systems at the molecular scale. An equivalent definition would be "machines at the molecular scale designed and built atom-by-atom". This is distinct from nanoscale materials. Based on Richard Feynman's vision of miniature factories using nanomachines to build complex products (including additional nanomachines), this advanced form of nanotechnology (or molecular manufacturing) would make use of positionally-controlled mechanosynthesis guided by molecular machine systems. MNT would involve combining physical principles demonstrated by chemistry, other nanotechnologies, and the molecular machinery of life with the systems engineering principles found in...
ISBN: 978-6-1302-9542-4
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Molecular engineering is any means of manufacturing molecules. It may be used to create, on an extremely small scale, most typically one at a time, new molecules which may not exist in nature, or be stable beyond a very narrow range of conditions. Today this is an extremely difficult process, requiring manual manipulation of molecules using such devices as a scanning tunneling microscope. Eventually it is expected to exploit life-like self-replicating 'helper molecules' that are themselves engineered. Thus the field can be seen as a precision form of chemical engineering that includes protein engineering, the creation of protein molecules, a process that occurs naturally in biochemistry, e.g.,...
ISBN: 978-6-1340-1832-6
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Книга по требованию
Дата выхода: июль 2011
High Quality Content by WIKIPEDIA articles! MOLLE is an acronym for Modular Lightweight Load-carrying Equipment. It is used to define the current generation of load-bearing equipment and rucksacks utilized by the United States Army, and its use is also growing in the British Army in the form of the Osprey Modular systems. The system's modularity is derived from the use of PALS webbing, rows of heavy-duty nylon stitched onto the vest as to allow for attachment of various MOLLE-compatible pouches and accessories. This method of attachment has become a de facto standard for modular tactical gear, replacing the click and stick system used in the earliest modular vest systems. It is produced for the United States Government under contract by...
ISBN: 978-6-1316-5601-9
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Книга по требованию
Дата выхода: июль 2011