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Making the modern world : materials and dematerialization
\"How much further should the affluent world push its material consumption? Does relative dematerialization lead to absolute decline in demand for materials? These and many other questions are discussed and answered in Making the Modern World: Materials and Dematerialization.Over the course of time, the modern world has become dependent on unprecedented flows of materials. Now even the most efficient production processes and the highest practical rates of recycling may not be enough to result in dematerialization rates that would be high enough to negate the rising demand for materials generated by continuing population growth and rising standards of living. This book explores the costs of this dependence and the potential for substantial dematerialization of modern economies. Making the Modern World: Materials and Dematerialization considers the principal materials used throughout history, from wood and stone, through to metals, alloys, plastics, and silicon, describing their extraction and production as well as their dominant applications. The evolving productivities of material extraction, processing, synthesis, finishing, and distribution, and the energy costs and environmental impact of rising material consumption are examined in detail. The book concludes with an outlook for the future, discussing the prospects for dematerialization and potential constraints on materials.This interdisciplinary text will provide useful perspectives for readers with backgrounds including resource economics, environmental studies, energy analysis, mineral geology, industrial organization, manufacturing, and material science\"-- Provided by publisher.
Book
Cellulose and the role of hydrogen bonds: not in charge of everything
In the cellulose scientific community, hydrogen bonding is often used as the explanation for a large variety of phenomena and properties related to cellulose and cellulose based materials. Yet, hydrogen bonding is just one of several molecular interactions and furthermore is both relatively weak and sensitive to the environment. In this review we present a comprehensive examination of the scientific literature in the area, with focus on theory and molecular simulation, and conclude that the relative importance of hydrogen bonding has been, and still is, frequently exaggerated.
Journal Article
Evidential reasoning in archaeology
\"How do archaeologists work with the data they identify as a record of the cultural past? How are these data collected and construed as evidence? What is the impact on archaeological practice of new techniques of data recovery and analysis, especially those imported from the sciences? To answer these questions, the authors identify close-to-the-ground principles of best practice based on an analysis of examples of evidential reasoning in archaeology that are widely regarded as successful, contested, or instructive failures. They look at how archaeologists put old evidence to work in pursuit of new interpretations, how they construct provisional foundations for inquiry as they go, and how they navigate the multidisciplinary ties that make archaeology a productive intellectual trading zone. This case-based approach is predicated on a conviction that archaeological practice is a repository of considerable methodological wisdom, embodied in tacit norms and skilled expertise--wisdom that is rarely made explicit except when contested, and is often obscured when questions about the status and reach of archaeological evidence figure in high-profile crisis debates\"-- Provided by publisher.
Book
Critical craft : technology, globalization, and capitalism
\"From Oaxacan wood carvings to dessert kitchens in provincial France, Critical Craft presents thirteen ethnographies which examine what defines and makes 'craft' in a wide variety of practices from around the world.Challenging the conventional understanding of craft as a survival, a revival, or something that resists capitalism, the book turns instead to the designers, DIY enthusiasts, traditional artisans, and technical programmers who consider their labor to be craft, in order to comprehend how they make sense of it. The authors' ethnographic studies focus on the individuals and communities who claim a practice as their own, bypassing the question of craft survival to ask how and why activities termed craft are mobilized and reproduced. Moving beyond regional studies of heritage artisanship, the authors suggest that ideas of craft are by definition part of a larger cosmopolitan dialogue of power and identity. By paying careful attention to these sometimes conflicting voices, this collection shows that there is great flexibility in terms of which activities are labelled 'craft'. In fact, there are many related ideas of craft and these shape distinct engagements with materials, people, and the economy. Case studies from countries including Mexico, Nigeria, India, Taiwan, the Philippines, and France draw together evidence based on linguistics, microsociology, and participant observation to explore the shifting terrain on which those engaged in craft are operating. What emerges is a fascinating picture which shows how claims about craft are an integral part of contemporary global change\"-- Provided by publisher.
Book
Cellulose and its derivatives: towards biomedical applications
Cellulose is the most abundant polysaccharide on Earth. It can be obtained from a vast number of sources, e.g. cell walls of wood and plants, some species of bacteria, and algae, as well as tunicates, which are the only known cellulose-containing animals. This inherent abundance naturally paves the way for discovering new applications for this versatile material. This review provides an extensive survey on cellulose and its derivatives, their structural and biochemical properties, with an overview of applications in tissue engineering, wound dressing, and drug delivery systems. Based on the available means of selecting the physical features, dimensions, and shapes, cellulose exists in the morphological forms of fiber, microfibril/nanofibril, and micro/nanocrystalline cellulose. These different cellulosic particle types arise due to the inherent diversity among the source of organic materials or due to the specific conditions of biosynthesis and processing that determine the consequent geometry and dimension of cellulosic particles. These different cellulosic particles, as building blocks, produce materials of different microstructures and properties, which are needed for numerous biomedical applications. Despite having great potential for applications in various fields, the extensive use of cellulose has been mainly limited to industrial use, with less early interest towards the biomedical field. Therefore, this review highlights recent developments in the preparation methods of cellulose and its derivatives that create novel properties benefiting appropriate biomedical applications.
Journal Article
Archaeology and the senses : human experience, memory, and affect
\"This book is an exciting new look at how archaeology has dealt with the bodily senses and offers an argument for how the discipline can offer a richer glimpse into the human sensory experience. Yannis Hamilakis shows how, despite its intensely physical engagement with the material traces of the past, archaeology has mostly neglected multi-sensory experience, instead prioritizing isolated vision and relying on the Western hierarchy of the five senses. In place of this limited view of experience, Hamilakis proposes a sensorial archaeology that can unearth the lost, suppressed, and forgotten sensory and affective modalities of humans. Using Bronze Age Crete as a case study, Hamilakis shows how sensorial memory can help us rethink questions ranging from the production of ancestral heritage to large-scale social change, and the cultural significance of monuments. Tracing the emergence of palaces in Bronze Age Crete as a celebration of the long-term, sensuous history and memory of their localities, Hamilakis points the way to reconstituting archaeology as a sensorial and affective multi-temporal practice. At the same time, he proposes a new framework on the interaction between bodily senses, things, and environments, which will be relevant to scholars in other fields\"-- Provided by publisher.
Book
Nanocellulose: a review on preparation routes and applications in functional materials
Nanocellulose has a wide range of applications in the field of functional materials, and it has piqued the interest of researchers for some time. This is because nanocellulose inherits the advantages of environmental friendliness and easy availability of plant cell walls in nature, as well as the unique morphology of nanostructures. This review presents four types of nanocellulose including cellulose nanocrystals (CNCs), cellulose nanofibrils (CNFs), regenerated nanocellulose (RNC) and bacterial cellulose (BC), introduces the different preparation routes and their mechanisms, analyzes the advantages and drawbacks between these approaches, and summarizes the potential applications in the field of functional materials such as reinforced composite materials, biomedical materials, soft templates, and optical materials. Finally, future development directions are proposed including further enrichment of nanocellulose raw materials, improvement of preparation methods to adapt to more diversified raw materials, and classification of products according to their morphology and properties to improve the use efficiency.
Journal Article
Environmental degradation of advanced and traditional engineering materials
\"From metals and polymers to ceramics, natural materials, and composites, this book covers the environmental impacts on a broad range of materials used for the engineering of infrastructure, buildings, machines, and components all of which experience some form of degradation. The text discusses fundamental degradation processes and presents examples of degradation under various environmental conditions. It gives the fundamental principles for each class of material, followed by detailed characteristics of degradation for specific alloys of compositions, guidelines on how to protect against degradation, and a description of testing procedures\"-- Provided by publisher.
Book
A general Lewis acidic etching route for preparing MXenes with enhanced electrochemical performance in non-aqueous electrolyte
Two-dimensional carbides and nitrides of transition metals, known as MXenes, are a fast-growing family of materials that have attracted attention as energy storage materials. MXenes are mainly prepared from Al-containing MAX phases (where A = Al) by Al dissolution in F-containing solution; most other MAX phases have not been explored. Here a redox-controlled A-site etching of MAX phases in Lewis acidic melts is proposed and validated by the synthesis of various MXenes from unconventional MAX-phase precursors with A elements Si, Zn and Ga. A negative electrode of Ti
3
C
2
MXene material obtained through this molten salt synthesis method delivers a Li
+
storage capacity of up to 738 C g
−1
(205 mAh g
−1
) with high charge–discharge rate and a pseudocapacitive-like electrochemical signature in 1 M LiPF
6
carbonate-based electrolyte. MXenes prepared via this molten salt synthesis route may prove suitable for use as high-rate negative-electrode materials for electrochemical energy storage applications.
Two-dimensional transition metal carbides and nitrides, known as MXenes, are currently considered as energy storage materials. A generic Lewis acidic etching route for preparing high-rate negative-electrode MXenes with enhanced electrochemical performance in non-aqueous electrolyte is now proposed.
Journal Article