Gemmology is the science of natural and artificial gems and gemstones, considered to be a geoscience and a branch of mineralogy. Although a profession in its own right, gemmology is often studied by jewellers to augment their abilities of gem identification. This comprehensive guide concentrates on the history of Jade in China, and includes the chapters: The Chou Dynasty; The Classic Age of Jade Carving from Han to Sung; From Sung to Ming; From Ming Onwards; The Material Aspect of Jade; Jade Objects of the Chou Dynasty Tabulated from Laufer; Note on the Lo-Yang Tombs; and Common Symbols. This rare text constitutes a definitive guide on the subject and will greatly appeal to gemmologists and collectors of rare gemmological texts. This book has been elected for republication due to its immense educational value, and is proudly republished here with a new introduction on the topic."

This clearly presented study examines the nature of religious experiences, and asks whether they can be used as evidence for religious beliefs. The author discusses important philosophical issues raised by religious experience, such as the role of models and metaphors in their description, and the way experiences in general are used as evidence for claims about the world. Using contemporary and classic sources from the world's religions, the author gives an account of different types of religious experience. She also draws extensively on psychological, sociological, and philosophical literature to meet sceptical challenges, and concludes that, like most experiences, they are most effective as evidence within an argument which combines evidence from a wide range of sources.

Caroline Franks Davis provides a clear, sensitive, and carefully argued assessment of the value of religious experiences as evidence for religious beliefs. She distinguishes the various types of experience, examining evidence from various religions, and draws extensively on psychological and sociological as well as philosophical and religious literature to meet sceptical challenges to religious experience.

Gemmology is the science of natural and artificial gems and gemstones, considered to be a geoscience and a branch of mineralogy. Although a profession in its own right, gemmology is often studied by jewellers to augment their abilities of gem identification. This comprehensive guide concentrates on the history of Jade in China, and includes the chapters: The Chou Dynasty; The Classic Age of Jade Carving from Han to Sung; From Sung to Ming; From Ming Onwards; The Material Aspect of Jade; Jade Objects of the Chou Dynasty Tabulated from Laufer; Note on the Lo-Yang Tombs; and Common Symbols. This rare text constitutes a definitive guide on the subject and will greatly appeal to gemmologists and collectors of rare gemmological texts. This book has been elected for republication due to its immense educational value and is proudly republished here with a new introduction on the topic."

Charger design that is 2-fault tolerant to catastrophic has been achieved for the Spacesuit Li-ion Battery with key features. Power supply control circuit and 2 microprocessors independently control against overcharge. 3 microprocessor control against undercharge (false positive: Go for EVA) conditions. 2 independent channels provide functional redundancy. Capable of charge balancing cell banks in series. Cell manufacturing and performance uniformity is excellent with both designs. Once a few outliers are removed, LV cells are slightly more uniform than MoliJ cells. If cell balance feature of charger is ever invoked, it will be an indication of a significant degradation issue, not a nominal condition.