Описание: Acoustic metamaterials are of growing interest due to their ability to manipulate the propagation of acoustic waves in an extraordinary manner to benefit various applications, such as communications, biosensing, and medical diagnosis and therapy. Among various construction methods of acoustic metamaterials, artificially engineered elastic periodic structures, known as phononic crystals (PCs), are the strongest candidates since they exhibit complete phononic band gaps and negative refractions due to the periodicity of the structure. In this book, a new class of acoustic metamaterials—gradient-index phononic crystal (GRIN PC)—is introduced to overcome the limitations of regular PCs and further enrich the control over acoustic waves. GRIN PCs with different gradient profiles are designed to guide acoustic waves in extraordinary manners that are not shown in nature or regular PCs. A practical method for tuning the phononic band gaps of a PC is investigated. The concepts presented in this book serve as important foundations for the future development of acoustic devices.
Автор: Steven Kirshblum, Vernon W. Lin Название: Spinal Cord Medicine ISBN: 0826137741 ISBN-13(EAN): 9780826137746 Издательство: Mare Nostrum (Eurospan) Рейтинг: Цена: 34485.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Combines the unique approaches of previous editions and draws on the expertise of both seasoned editors, along with experienced chapter authors, to bring together in one volume the most up-to-date medical, clinical, and rehabilitative knowledge in spinal cord injury management across the spectrum of care.
Описание: A unique exploration of how dental health connects to holistic health, with a 40-day meal plan and long-lasting dietary guidelines that are easily integrable into everyday life Throughout the years, dental health has often been characterized as a reflection of our overall health, where bad oral health results from issues with other parts of our body. But what if we flipped the paradigm? What if we thought about dental health as the foundation for our physical health as a whole? Dr. Steven Lin, an experienced dentist and the world's first dental nutritionist, has analyzed our ancestral traditions, epigenetics, gut health, and the microbiome in order to develop food-based principles for a literal top-down holistic health approach. Merging dental and nutritional science, Dr. Lin lays out the dietary program that can help ensure you won't need dental fillings or cholesterol medications --and give you the resources to raise kids who develop naturally straight teeth. With our mouth as the gatekeeper of our gut, keeping our oral microbiome balanced will create a healthy body through a healthy mouth. Dr. Lin arms you with a 40-day meal plan, complete with the Dental Diet food pyramid, exercises for the mouth, recipes, and cooking techniques to help you easily and successfully implement his techniques into your everyday life. The tools to improve overall wellness levels and reverse disease are closer than we think--in our markets, in our pantries, and, most frequently, in our mouths.
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