R. David Heise Скачать все книги 4 Количество книг

Understanding gemstones in a geological context Gemstones are colorful treasures of the Earth that have captivated humans for thousands of years. The physical and chemical characteristics of each type of gem provides insights into the geological processes that created them. Geology and Mineralogy of Gemstones is a textbook aimed at upper-level undergraduate and graduate students. It presents the basic mineralogical and geological knowledge needed to understand gemstones and examines the characteristics and geological origins of different types of gemstone. Volume highlights include: Concepts in mineralogy Structure and chemical composition of minerals Geological processes that lead to the formation and movement of gemstones Equipment and tools used to examine gemstones and their physical properties Description of small- and large-scale methods of gemstone mining The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.

Process-Induced Food Toxicants combines the analytical, health, and risk management issues relating to all of the currently known processing-induced toxins that may be present in common foods. It considers the different processing methods used in the manufacture of foods, including thermal treatment, drying, fermentation, preservation, fat processing, and high hydrostatic pressure processing, and the potential contaminants for each method. The book discusses the analysis, formation, mitigation, health risks, and risk management of each hazardous compound. Also discussed are new technologies and the impact of processing on nutrients and allergens.

Two people. An unforgettable moment. One extraordinary love story.In Chicago, Illinois, two people are about to lock eyes across a crowded dance floor. The following moment will spark the love story of a lifetime…The year is 1944 and America has just entered the war. Young men and women are being drafted in to fight with their allies on Europe’s distant shores. Throughout America, sweethearts are saying their last goodbyes.Liz Stephens is already betrothed to budding US politician Dalton Harris, but when she meets GI Morgan McClain, she feels an instant and intense connection. But then he dances with her flirtatious best friend Betty and Liz is left feeling like just another soldier’s fancy.Betty is mesmerized by Morgan and begs Liz to write letters for her to post to him overseas. Liz reluctantly agrees, in the end anxious to retain a connection to him. As the last searing days of World War II loom, a correspondence begins that will alter the course of their lives forever.

Surveying Cultures uniquely employs techniques rooted in survey methodology to discover cultural patterns in social science research. Examining both classical and emerging methods that are used to survey and assess differing norms among populations, the book successfully breaks new ground in the field, introducing a theory of measurement for ethnographic studies that employs the consensus-as-culture model. The book begins with a basic overview of cross-cultural measurement of sentiments and presents innovative and sophisticated analyses of measurement issues and of homogeneity among respondents. Subsequent chapters explore topics that are at the core of successful data collection and analysis in culture studies, including: The role of bipolar scales and Internet data collection in measuring sentiments Key methodological variables that determine the quality of quantitative data, including measurement errors, validity, and reliability New approaches to reliability and several new methods of assessing a respondent's degree of inculcation into group culture Sampling, coverage, nonresponse, and measurement errors, with an in-depth discussion of their occurrence in culture surveys, their impact assessments, and how current measurement techniques are constructed to help prevent these kinds of errors Common problems often encountered in the acquisition and communication of data, including identifying error variances, interpreting gender differences in responses, and defining the difference between cultures and subcultures Throughout the book, each topic is accompanied by a review of related methodological literature. For many of the presented concepts, the author includes a formal analysis of the related issues in measuring cultural norms and reports on analyses. Each chapter concludes with an organized list of major findings as well as an insightful outline of specific recommendations regarding practical problems in culture studies. Surveying Cultures serves as a valuable supplemental book to courses on survey and research methods at the upper-undergraduate and graduate levels. It is also an excellent reference for researchers in the fields of sociology, anthropology, psychology, and political science.