Until comparatively recently, trace analysis techniques were in general directed toward the determination of impurities in bulk materials. Methods were developed for very high relative sensitivity, and the values determined were average values. Sampling procedures were devised which eliminated the so-called sampling error. However, in the last decade or so, a number of developments have shown that, for many purposes, the distribution of defects within a material can confer important new properties on the material. Perhaps the most striking example of this is given by semiconductors; a whole new industry has emerged in barely twenty years based entirely on the controlled distribu tion of defects within what a few years before would have been regarded as a pure, homogeneous crystal. Other examples exist in biochemistry, metallurgy, polyiners and, of course, catalysis. In addition to this of the importance of distribution, there has also been a recognition growing awareness that physical defects are as important as chemical defects. (We are, of course, using the word defect to imply some dis continuity in the material, and not in any derogatory sense. ) This broadening of the field of interest led the Materials Advisory Board( I} to recommend a new definition for the discipline, "Materials Character ization," to encompass this wider concept of the determination of the structure and composition of materials. In characterizing a material, perhaps the most important special area of interest is the surface.
In full colour throughout and featuring new case studies, this fully revised and updated edition of the bestselling AS Media Studies: covers all aspects of Media Studies for students of the AS and A-level media syllabus. The authors, who are experienced teachers and examiners, introduce students step-by-step to the skills of reading media texts, and address key areas such as media technologies, media institutions and media audiences. Individual chapters cover: introduction to studying the media study skills reading media texts media institutions audiences and the media case studies of newspapers, television programmes, and films research and how to do it preparing for exams coursework and production guide. AS Media Studies: The Essential Introduction gives students the confidence to tackle every part of an introductory media course. Its key features include: activities for the classroom practical assignments for individual study a glossary of key terms case studies of recent media showing how theoretical ideas can be applied in everyday situations.
This text introduces pre-university students step-by-step to the skills of reading and analysing media texts. It also explore a range of media institutions and technologies, ideologies, and codes of practice.
Explains the primary forms of law as a social, political and normative phenomenon. The authors illustrate the fundamental difference between repressive law, riddled with raw conflict and the accommodation of special interests, and responsive law, the reasoned effort to realize an ideal of polity.
Labor and the Red Scare; Seattle and Winnipeg general strikes; Boston telephone and police strikes; Streetcar strikes in Chicago, Denver, Knoxville, Kansas City; strikes in clothing, textile, coal and steel; The open-shop drive; Strikes and Black-white relationships; the AFL and the Black worker; the IWW; Communist Party founded; Political action 1918-1920.
About 580 medical laboratory terms pertinent to the disciplines of hematology and blood transfusion serology. Definitions range from short to long. Also includes abbreviations, synonyms, cross references, and tables.
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