The elucidation of reaction mechanisms generally requires the carefully designed control of molecular symmetry to distinguish between the many possible reaction pathways. Making and Breaking Symmetry in Chemistry emphasises the crucial role played by symmetry in modern synthetic chemistry. After discussion of a number of famous classical experiments, the advances brought about by the introduction of new techniques, in particular NMR spectroscopy, are exemplified in numerous cases taken from the recent literature. Experimental verification of many of the predictions made in Woodward and Hoffmann's explication of the Conservation of Orbital Symmetry are described. Applications that involve the breaking of molecular symmetry to resolve these and other mechanistic problems in organic, inorganic and organometallic chemistry are presented in the first sections of the book, together with many examples of the detection of hitherto hidden rearrangement processes.
Subsequently, under the aegis of making molecular symmetry, examples of the preparation of highly symmetrical molecules found in the organic, organometallic or inorganic domains are discussed. These include Platonic hydrocarbons or boranes, tetrahedranes, cubanes, prismanes, dodecahedrane, fullerene fragments such as corannulene, sumanene or semibuckminsterfullerene, and other systems of unusual geometries or bonding characteristics (Mцbius strips, molecular brakes and gears, Chauvin's carbomers, Fitjer's rotanes, persubstituted rings, metal-metal multiple bonds, etc.). The text also contains vignettes of many of the scientists who made these major advances, as well as short sections that briefly summarise key features of important topics that underpin the more descriptive material. These include some aspects of chirality, NMR spectroscopy, and the use of isotopic substitution to break molecular symmetry. A brief appendix on point group symmetry and nomenclature is also helpfully provided.
Описание: This text prepares mental health professionals to conduct a thorough psychological assessment of individuals involved in immigration proceedings, present the results in a professional report, and develop a basic legal understanding of immigration cases.
Автор: Maidana-eletti, Mariela Название: Global food governance ISBN: 3034320094 ISBN-13(EAN): 9783034320092 Издательство: Peter Lang Рейтинг: Цена: 10993.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: With increasingly globalised markets, changing consumer preferences and the steady development of technologies influencing food trade flows, safety and quality concerns have triggered the development of new forms of global (food) governance. Since its creation in 1995, the World Trade Organization (WTO) has succeeded in providing a multilateral legal framework for the development of regulatory practices through its multiple agreements. Similarly, the continuing importance of regional and bilateral trade agreements, such as in the European Union and in Switzerland, has enhanced WTO’s accomplishments through a comprehensive and dynamic set of international rules and standards for trade. However, the changing trends in the production and distribution of food products have questioned the effectiveness of the regulatory status quo. This book addresses the legal aspects of the current global architecture for food governance, particularly with regard to the role of international standards. In doing so, this work attempts at mapping the implications of domestic food measures in international trade law.
Автор: McGlinchey, Stephen Название: International Relations Theory ISBN: 1910814199 ISBN-13(EAN): 9781910814192 Издательство: Неизвестно Рейтинг: Цена: 3677.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The literary bestseller that took the Baltics by storm now published for the first time in English. This is an intimate portrayal of three generations of women with everything on the line. The Soviet state steps in and leaves them destitute. All seems lost, until the political change stirring in Riga offers them a chance to take their lives back.
Автор: McGlinchey Stephen Название: International Relations ISBN: 1910814172 ISBN-13(EAN): 9781910814178 Издательство: Неизвестно Рейтинг: Цена: 3677.00 р. Наличие на складе: Нет в наличии.
Автор: Macуn Cecilia, Solana Mariela, Vacarezza Nayla Luz Название: Affect, Gender and Sexuality in Latin America ISBN: 3030593711 ISBN-13(EAN): 9783030593711 Издательство: Springer Рейтинг: Цена: 18167.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book emphasizes the significance of affects, feelings and emotions in how we think about politics, gender and sexuality in Latin America.
Описание: This book constitutes refereed proceedings of the 9th Conference on Information and Communication Technologies of Ecuador, TICEC 2021, held at the Universidad Politecnica Salesiana (UPS) campus in November 2021.
Автор: Croyle Paula Название: Today Mariela Will Be a Princess ISBN: 1524846848 ISBN-13(EAN): 9781524846848 Издательство: Simon & Schuster Рейтинг: Цена: 1953.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Автор: Berry Theodorea Regina, Rodrнguez Mariela, Kalinec Craig Crystal A. Название: Latinx Curriculum Theorizing ISBN: 1498573800 ISBN-13(EAN): 9781498573801 Издательство: Неизвестно Рейтинг: Цена: 25519.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book is a collection of empirical scholarship on curriculum connected to the Latinx diaspora from three perspectives: curriculum as content/subject matter; curriculum for schools` goals, objectives, and purposes; and curriculum as autobiography.
Автор: Agotegaray Mariela Название: Silica-Based Nanotechnology for Bone Disease Treatment ISBN: 3030641295 ISBN-13(EAN): 9783030641290 Издательство: Springer Цена: 6986.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book addresses conventional treatments of bone diseases. It proposes nanotechnological tools based on the use of silica as a bioactive material for bone. The book links the physiological and anatomical aspects of the bone with the ancestral importance of the bone system.
Описание: In 1990, disturbing television footage emerged showing the inhumane conditions in which children in Romanian institutions were living, and visitors were surprised that the babies were silent. The so-called ‘Romanian orphans’ became subjects of several international research studies. In parallel, Romania had to reform its child protection system in order to become a member of the European Union.This book sheds light on the lived experiences of these children, who had become adults by the time the country joined the EU. Uniquely, the book brings together the accounts of those who stayed in institutions, those who grew up in foster care and those who were adopted, both in Romania and internationally. Their narratives challenge stereotypes about these types of care.
Описание: In 1990, disturbing television footage emerged showing the inhumane conditions in which children in Romanian institutions were living, and visitors were surprised that the babies were silent. The so-called ‘Romanian orphans’ became subjects of several international research studies. In parallel, Romania had to reform its child protection system in order to become a member of the European Union.This book sheds light on the lived experiences of these children, who had become adults by the time the country joined the EU. Uniquely, the book brings together the accounts of those who stayed in institutions, those who grew up in foster care and those who were adopted, both in Romania and internationally. Their narratives challenge stereotypes about these types of care.
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