Автор: Dongfang hanyuan Название: New HSK Mock Tests & Analyses (Level 2) SB ISBN: 7513803358 ISBN-13(EAN): 9787513803359 Издательство: Sinolingua Цена: 1580.00 р. Наличие на складе: Нет в наличии.
Описание: The book includes five sets of HSK mock tests accompanied by listening materials, test keys and analyses (Chinese-English). Its content reflects the features of the new HSK: the focus of the listening tasks is on real life situational dialogues; the reading tasks also focus on materials that reflect Chinese culture and real life scenarios. In terms of test format, we have based the listening and reading tasks in this book on official tests, and have made them resemble as closely as possible those in the actual test. This is especially notable in terms of the number of words used and the types of tasks included in the tests we have constructed. Furthermore, we provide each test question and its key with detailed and accurate English analyses as well as explanations, thus ensuring the students not only know the answer, but also understand the reason behind it.
Автор: Chen Dong Название: Handbook on Applications of Ultrasound ISBN: 143984206X ISBN-13(EAN): 9781439842065 Издательство: Taylor&Francis Рейтинг: Цена: 33686.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Ultrasonic irradiation and the associated sonochemical and sonophysical effects are complementary techniques for driving more efficient chemical reactions and yields. Sonochemistry-the chemical effects and applications of ultrasonic waves-and sustainable (green) chemistry both aim to use less hazardous chemicals and solvents, reduce energy consumption, and increase product selectivity.
A comprehensive collection of knowledge, Handbook on Applications of Ultrasound covers the most relevant aspects linked to and linking green chemistry practices to environmental sustainability through the uses and applications of ultrasound-mediated and ultrasound-assisted biological, biochemical, chemical, and physical processes.
Chapters are presented in the areas of:
Medical applications
Drug and gene delivery
Nanotechnology
Food technology
Synthetic applications and organic chemistry
Anaerobic digestion
Environmental contaminants degradation
Polymer chemistry
Industrial syntheses and processes
Reactor design
Electrochemical systems
Combined ultrasound-microwave technologies
While the concepts of sonochemistry have been known for more than 80 years, in-depth understanding of this phenomenon continues to evolve. Through a review of the current status of chemical and physical science and engineering in developing more environmentally friendly and less toxic synthetic processes, this book highlights many existing applications and the enormous potential of ultrasound technology to upgrade present industrial, agricultural, and environmental processes.
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