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This book seeks to communicate to both a global and local audience, the key attributes of pre-industrial African metallurgy such as technological variation across space and time, methods of mining and extractive metallurgy and the fabrication of metal objects. These processes were transformative in a physical and metaphoric sense, which made them total social facts. Because the production and use of metals was an accretion of various categories of practice, a chaine operatoire conceptual and theoretical framework that simultaneously considers the embedded technological and anthropological factors was used. The book focuses on Africa’s different regions as roughly defined by cultural geography. On the one hand there is North Africa, Egypt, the Egyptian Sudan, and the Horn of Africa which share cultural inheritances with the Middle East and on the other is Africa south of the Sahara and the Sudan which despite interacting with the former is remarkably different in terms of technological practice. For example, not only is the timing of metallurgy different but so is the infrastructure for working metals and the associated symbolic and sociological factors. The cultural valuation of metals and the social positions of metal workers were different too although there is evidence of some values transfer and multi-directional technological cross borrowing. The multitude of permutations associated with metals production and use amply demonstrates that metals participated in the production and reproduction of society. Despite huge temporal and spatial differences there are so many common factors between African metallurgy and that of other regions of the world. For example, the role of magic and ritual in metal working is almost universal be it in Bolivia, Nepal, Malawi, Timna, Togo or Zimbabwe. Similarly, techniques of mining were constrained by the underlying geology but this should not in any way suggest that Africa’s metallurgy was derivative or that the continent had no initiative. Rather it demonstrates that when confronted with similar challenges, humanity in different regions of the world responded to identical challenges in predictable ways mediated as mediated by the prevailing cultural context. The success of the use of historical and ethnographic data in understanding variation and improvisation in African metallurgical practices flags the potential utility of these sources in Asia, Latin America and Europe. Some nuance is however needed because it is simply naïve to assume that everything depicted in the history or ethnography has a parallel in the past and vice versa. Rather, the confluence of archaeology, history and ethnography becomes a pedestal for dialogue between different sources, subjects and ideas that is important for broadening our knowledge of global categories of metallurgical practice.
Social Sciences. --- Archaeology. --- Anthropology. --- Metallic Materials. --- Social sciences. --- Materials. --- Sciences sociales --- Anthropologie --- Archéologie --- Matériaux --- History & Archaeology --- Archaeology --- Metallurgy in archaeology --- Metallurgy --- History. --- Archaeological metallurgy --- Archaeometallurgy --- Metals. --- Oxygen --- Chemical engineering --- Metals --- Ores --- Smelting --- Industrial applications --- Methodology --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Human beings --- Archeology --- Anthropology --- Auxiliary sciences of history --- History --- Antiquities --- Materials --- Metallic elements --- Chemical elements --- Primitive societies --- Social sciences
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This book provides a detailed description and analysis of the reduction and metabolism of metals and metalloids by sulfate reducing bacteria. The molecular mechanisms of bacterial resistance to copper are examined as well as extracellular electron transfer and bacterial metal oxide respiration. Furthermore, in this book enrichment, isolation, and physiology of magnetotactic bacteria are discussed. The interactions of bacteria with metals in natural environments and their role in metal cycling have been studied for decades. Advances in studies of bacteria-metal interactions identified numerous important aspects of these interactions, such as bioremediation of metal-contaminated environments, the role of metals in redox reactions and other cellular functions, as well as the role of metals in toxicity and infection. Microbiologists, environmental scientists, and students interested in microbe interactions with metals and their effect on the environment and their application in biotechnology will be interested in the topics discussed in the book.
Chemistry. --- Applied Microbiology. --- Protein-Ligand Interactions. --- Environmental Chemistry. --- Metallic Materials. --- Microbiology. --- RNA-ligand interactions. --- Environmental chemistry. --- Materials. --- Chimie --- Microbiologie --- Chimie de l'environnement --- Matériaux --- Biology --- Health & Biological Sciences --- Microbiology & Immunology --- Proteins. --- Metals. --- Microbial biology --- Microorganisms --- Chemistry, Environmental --- Chemistry --- Ecology --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Materials --- Proteins . --- Metallic elements --- Chemical elements --- Ores --- Metallurgy --- Proteids --- Biomolecules --- Polypeptides --- Proteomics
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The book covers all types of advanced high strength steels ranging from dual-phase, TRIP. Complex phase, martensitic, TWIP steels to third generation steels, including promising candidates as carbide free bainitic steels, med Mn and Quenching&Partitioning processed steels. The author presents fundamentals of physical metallurgy of key features of structure and relationship of structure constituents with mechanical properties as well as basics of processing AHSS starting from most important features of intercritical heat treatment, with focus on critical phase transformations and influence of alloying and microalloying. This book intends to summarize the existing knowledge to show how it can be utilized for optimization and adaption of steel composition, processing, and for additional improvement of steel properties that should be recommended to engineering personal of steel designers, producers and end users of AHSS as well as to students of colleges and Universities who deal with materials for auto industry.
Materials Science --- Chemical & Materials Engineering --- Engineering & Applied Sciences --- Sheet-steel --- Mechanical properties. --- Materials science. --- Automotive engineering. --- Metals. --- Materials Science. --- Metallic Materials. --- Automotive Engineering. --- Steelwork --- Materials. --- Engineering. --- Construction --- Industrial arts --- Technology --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Materials --- Metallic elements --- Chemical elements --- Ores --- Metallurgy
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Magnetic nanoparticles (NPs) are finding their place in many modern technologies such as electronics (memory or spintronic devices) and medicine (contrast media, electromagnetic thermal therapy) to name just a few examples. The application of modern techniques based on synchrotron radiation, in particular X-ray spectroscopies, as well as an rf transverse susceptibility probe, built ad hoc, allowed the author to investigate several classes of magnetic NPs with diverse applications. For example, the interesting anisotropic properties of CoW and CoPt NPs revealed new magnetic behaviour and phases. Gold NPs prepared on a biological template from Sulfolobus acidocaldarius S-layer, were shown to possess intrinsic magnetism caused by the electron exchange with the sulfur atoms of the template. Silica and oleic acid coated magnetite NPs showed excellent human compatibility while preserving the bulk magnetic figures of merit. Both macroscopic and microscopic properties of all these NPs, hitherto unexplained, have been revealed for the first time.
Physics. --- Magnetism, Magnetic Materials. --- Nanotechnology. --- Metallic Materials. --- Nanoscale Science and Technology. --- Magnetism. --- Materials. --- Physique --- Magnétisme --- Nanotechnologie --- Matériaux --- Actinide elements. --- Nanoparticles. --- Nanostructures. --- Physics --- Physical Sciences & Mathematics --- Electricity & Magnetism --- Nanostructures --- Nanoparticles --- Magnetic properties. --- Magnetic materials. --- Nanoscale science. --- Nanoscience. --- Metals. --- Nanostructured materials --- Particles --- Nanoscience --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Molecular technology --- Nanoscale technology --- High technology --- Mathematical physics --- Electricity --- Magnetics --- Materials --- Nano science --- Nanoscale science --- Nanosciences --- Science --- Metallic elements --- Chemical elements --- Ores --- Metallurgy
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This book details the design for creation of metal nanomaterials with optimal functionality for specific applications. The authors describe how to make desired metal nanomaterials in a wet lab. They include an overview of applications metal nanomaterials can be implemented in and address the fundamentals in the controlled synthesis of metal nanostructures.
Materials Science. --- Metallic Materials. --- Nanotechnology and Microengineering. --- Engineering. --- Materials. --- Ingénierie --- Matériaux --- Chemical & Materials Engineering --- Engineering & Applied Sciences --- Materials Science --- Nanostructures. --- Nanostructures --- Nanostructured materials. --- Optical properties. --- Nanomaterials --- Nanometer materials --- Nanophase materials --- Nanostructure controlled materials --- Nanostructure materials --- Ultra-fine microstructure materials --- Materials science. --- Nanotechnology. --- Metals. --- Microstructure --- Nanotechnology --- Nanoscience --- Physics --- Construction --- Industrial arts --- Technology --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Materials --- Molecular technology --- Nanoscale technology --- High technology --- Metallic elements --- Chemical elements --- Ores --- Metallurgy
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This thesis consists of an in-depth study of investigating microstructure-property relationships in bulk metallic glasses using a novel quantitative approach by which influence of the second phase features on mechanical properties can be independently and systematically analyzed. The author evaluates and optimizes the elastic and plastic deformation, as well as the overall toughness of cellular honeycombs under in-plane compression and porous heterostructures under uniaxial tension. The study reveals three major deformation zones in cellular metallic glass structures, where deformation changes from collective buckling showing non-linear elasticity to localized failure exhibiting a brittle-like deformation, and finally to global sudden failure with negligible plasticity as the length to thickness ratio of the ligaments increases. The author found that spacing and size of the pores, the pore configuration within the matrix, and the overall width of the sample determines the extent of deformation, where the optimized values are attained for pore diameter to spacing ratio of one with AB type pore stacking.
Materials Science. --- Metallic Materials. --- Nanotechnology and Microengineering. --- Nanoscale Science and Technology. --- Engineering. --- Materials. --- Ingénierie --- Matériaux --- Chemical & Materials Engineering --- Engineering & Applied Sciences --- Materials Science --- Metallic glasses. --- Glasses, Metallic --- Glassy alloys --- Glassy metals --- Materials science. --- Nanoscale science. --- Nanoscience. --- Nanostructures. --- Nanotechnology. --- Metals. --- Alloys --- Amorphous substances --- Liquid metals --- Construction --- Industrial arts --- Technology --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Materials --- Nano science --- Nanoscale science --- Nanosciences --- Science --- Molecular technology --- Nanoscale technology --- High technology --- Metallic elements --- Chemical elements --- Ores --- Metallurgy --- Nanoscience --- Physics
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The 3rd edition of this popular textbook covers current topics in all areas of casting solidification. Partial differential equations and numerical analysis are used extensively throughout the text, with numerous calculation examples, to help the reader in achieving a working knowledge of computational solidification modeling. The features of this new edition include: • new chapters on semi-solid and metal matrix composites solidification • a significantly extended treatment of multiscale modeling of solidification and its applications to commercial alloys • a survey of new topics such as solidification of multicomponent alloys and molecular dynamic modeling • new theories, including a theory on oxide bi-films in the treatment of shrinkage problems • an in-depth treatment of the theoretical aspects of the solidification of the most important commercial alloys including steel, cast iron, aluminum-silicon eutectics, and superalloys • updated tables of material constants.
Materials Science. --- Metallic Materials. --- Crystallography. --- Continuum Mechanics and Mechanics of Materials. --- Materials. --- Cristallographie --- Matériaux --- Materials Science --- Chemical & Materials Engineering --- Engineering & Applied Sciences --- Materials science. --- Continuum mechanics. --- Metals. --- Mechanics. --- Mechanics, Applied. --- Crystallography and Scattering Methods. --- Solid Mechanics. --- Applied mechanics --- Engineering, Mechanical --- Engineering mathematics --- Classical mechanics --- Newtonian mechanics --- Physics --- Dynamics --- Quantum theory --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Leptology --- Physical sciences --- Mineralogy --- Materials --- Metallic elements --- Chemical elements --- Ores --- Metallurgy --- Metal castings --- Solidification --- Moulage (fonderie) --- Mathematical models. --- Modèles mathématiques.
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This book reviews fundamental advances in the use of metallic biomaterials to reconstruct hard tissues and blood vessels. It also covers the latest advances in representative metallic biomaterials, such as stainless steels, Co-Cr alloys, titanium and its alloys, zirconium, tantalum and niobium based alloys. In addition, the latest findings on corrosion, cytotoxic and allergic problems caused by metallic biomaterials are introduced. The book offers a valuable reference source for researchers, graduate students and clinicians working in the fields of materials, surgery, dentistry, and mechanics. Mitsuo Niinomi, PhD, D.D.Sc., is a Professor at the Institute for Materials Research, Tohoku University, Japan Takayuki Narushima, PhD, is a Professor at the Department of Materials Processing, Tohoku University, Japan Masaaki Nakai, PhD, is an Associate Professor at the Institute for Materials Research, Tohoku University, Japan.
Materials Science. --- Biomaterials. --- Biomedical Engineering. --- Metallic Materials. --- Orthopedics. --- Biomedical engineering. --- Materials. --- Orthopédie --- Génie biomédical --- Matériaux --- Health & Biological Sciences --- Biomedical Engineering --- Biomedical materials. --- Metals in medicine. --- Biocompatible materials --- Biomaterials --- Medical materials --- Medicine --- Materials --- Materials science. --- Metals. --- Biomedical materials --- Medical instruments and apparatus --- Biomedical engineering --- Biocompatibility --- Prosthesis --- Biomedical Engineering and Bioengineering. --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Clinical engineering --- Medical engineering --- Bioengineering --- Biophysics --- Orthopaedics --- Orthopedia --- Surgery --- Bioartificial materials --- Hemocompatible materials --- Metallic elements --- Chemical elements --- Ores --- Metallurgy --- Biomaterials (Biomedical materials)
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This book covers the latest advances in processing techniques for producing metallic biomaterial implants. It also discusses recent developments in surface modifications using bioactive ceramics and blood-compatible polymers, as well as the adhesive strength of bioactive surface layers, before introducing the practical applications of metallic biomaterials in the fields of surgery and dentistry. As such, the book provides an essential reference guide for researchers, graduate students and clinicians working in the fields of materials, surgery, dentistry, and mechanics. Mitsuo Niinomi, PhD, D.D.Sc., is a Professor at the Institute for Materials Research, Tohoku University, Japan Takayuki Narushima, PhD, is a Professor at the Department of Materials Processing, Tohoku University, Japan Masaaki Nakai, PhD, is an Associate Professor at the Institute for Materials Research, Tohoku University, Japan.
Materials Science. --- Biomaterials. --- Biomedical Engineering. --- Metallic Materials. --- Orthopedics. --- Biomedical engineering. --- Materials. --- Orthopédie --- Génie biomédical --- Matériaux --- Health & Biological Sciences --- Biomedical Engineering --- Metals in medicine. --- Biomedical materials. --- Biocompatible materials --- Biomaterials --- Medical materials --- Medicine --- Materials --- Materials science. --- Metals. --- Biomedical engineering --- Biocompatibility --- Prosthesis --- Biomedical materials --- Medical instruments and apparatus --- Biomedical Engineering and Bioengineering. --- Orthopaedics --- Orthopedia --- Surgery --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Clinical engineering --- Medical engineering --- Bioengineering --- Biophysics --- Metallic elements --- Chemical elements --- Ores --- Metallurgy --- Bioartificial materials --- Hemocompatible materials --- Biomaterials (Biomedical materials)
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This edited book contains extended research papers from AIMTDR 2014. This includes recent research work in the fields of friction stir welding, sheet forming, joining and forming, modeling and simulation, efficient prediction strategies, micro-manufacturing, sustainable and green manufacturing issues etc. This will prove useful to students, researchers, and practitioners in the field of materials forming and manufacturing.
Materials Science. --- Metallic Materials. --- Manufacturing, Machines, Tools. --- Machinery. --- Materials. --- Machines --- Matériaux --- Chemical & Materials Engineering --- Engineering & Applied Sciences --- Materials Science --- Metal-work --- Metal bonding --- Metals --- Bonding --- Materials science. --- Manufacturing industries. --- Machines. --- Tools. --- Metals. --- Sealing (Technology) --- Manufactures. --- Manufacturing, Machines, Tools, Processes. --- Manufactured goods --- Manufactured products --- Products --- Products, Manufactured --- Commercial products --- Manufacturing industries --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Materials --- Metallic elements --- Chemical elements --- Ores --- Metallurgy
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