The answers to some of the most fundamental questions in science lie between the stars, in molecular clouds that serve as celestial laboratories. Disentangling the chemistries in extraterrestrial environments can provide clues about how planets form and shed light on problems in terrestrial chemistry that are difficult to investigate in the lab, and even the origins of life. Astrochemistry takes you on a tour of the molecular universe through time and space, starting with the emergence of matter about 13.8 billion years ago. From there, the tour visits the interstellar medium, with an emphasis on molecular clouds where stars are born. It then goes through different evolutionary stages of stars and planets – and the chemistry that emerges alongside them – before ending in our own solar system, where you will learn about chemical delivery by objects such as comets and meteorites.
The answers to some of the most fundamental questions in science lie between the stars, in molecular clouds that serve as celestial laboratories. Disentangling the chemistries in extraterrestrial environments can provide clues about how planets form and shed light on problems in terrestrial chemistry that are difficult to investigate in the lab, and even the origins of life. Astrochemistry takes you on a tour of the molecular universe through time and space, starting with the emergence of matter about 13.8 billion years ago. From there, the tour visits the interstellar medium, with an emphasis on molecular clouds where stars are born. It then goes through different evolutionary stages of stars and planets – and the chemistry that emerges alongside them – before ending in our own solar system, where you will learn about chemical delivery by objects such as comets and meteorites.
Geoffrey Chaucer, known as the Father of English literature, is widely considered the greatest English poet of the Middle Ages and was the first poet to be buried in Poets' Corner of Westminster Abbey. While he achieved fame during his lifetime as an author, philosopher, and astronomer, composing a scientific treatise on the astrolabe for his ten-year-old son Lewis, Chaucer also maintained an active career in the civil service as a bureaucrat, courtier and diplomat. Among his many works are The Book of the Duchess, The House of Fame, The Legend of Good Women and Troilus and Criseyde. He is best known today for The Canterbury Tales.
The Collected Critical Writings gathers more than forty years of Hill's published criticism, in a revised final form, and also adds much new work. It will serve as the canonical volume of criticism by Hill, the pre-eminent poet-critic whom A. N. Wilson has called "probably the best writer alive, in verse or in prose." In his criticism Hill ranges widely, investigating both poets (including Jonson, Dryden, Hopkins, Whitman, Eliot, and Yeats ) and prose writers (such as Tyndale, Clarendon, Hobbes, Burton, Emerson, and F. H. Bradley). He is also steeped in the historical context - political, poetic, and religious - of the writers he studies. Most importantly, he brings texts and contexts into new and telling relations, neither reducing texts to the circumstances of their utterance nor imagining that they can float free of them. A number of the essays have already established themselves as essential reading on particular subjects, such as his analysis of Vaughan's "The Night", his discussion of Gurney's poetry, and his critical account of The Oxford English Dictionary. Others confront the problems of language and the nature of value directly, as in "Our Word is Our Bond", "Language, Suffering, and Value", and "Poetry and Value". In all his criticism, Hill reveals literature to be an essential arena of civic intelligence.
This book aims to provide an evidence-based and highly illustrative approach to a comprehensive repertoire of surgical procedures, including: basic principles, resective surgery, regenerative techniques and periodontal/peri-implant plastic surgery. It emphasizes the importance of case selection and planning to successful outcomes and extols the benefits of microsurgical instrumentation. The distinction between periodontal and other forms of oral surgery is made, principally that in periodontal surgery, the contour and quality of the tissues post-operatively is vital to longer-term success and therefore careful soft tissue management is pivotal.
The classic respected series in a stunning new design. This edition of The Knight's Tale from the highly-respected Selected Tales series includes the full, complete text in the original Middle English, along with an in-depth introduction by A. C. Spearing, detailed notes and a comprehensive glossary.
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