Скачать книгу - Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates



Carbohydrates are widely distributed in nature and widely available, and so are considered as a promising feedstock for the preparation of many organic chemical compounds. They are particularly useful in the preparation of nitrogen heterocycles because of their related structural characteristics and easy availability. Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates will review the recent literature dealing with use of carbohydrates as raw materials in the synthesis of these materials. The text contains six chapters arranged according to the complexity of the heterocyclic compounds discussed, ranging from five to seven membered rings and from single to multiple fused rings. The book provides a detailed discussion of the various synthetic approaches to these compounds, using carbohydrate starting materials, and does not merely reference synthetic methodology but attempts to give as much detail as possible on the actual experimental conditions used, in such a way that the chemist can use the information directly to design a multi-step synthesis. It discusses the different approaches to the synthesis of a wide range of naturally occurring nitrogen heterocycles in a format that enables the reader to make comparisons and decisions on whether to use a certain procedure, to modify it, or to devise a new synthetic methodology.


Reversing Gum Disease Naturally. A Holistic Home Care Program Reversing Gum Disease Naturally. A Holistic Home Care Program

Автор: Sandra Senzon

Год издания: 

"Reversing Gum Disease Naturally presents techniques and information so that you can reverse already unhealthy states in your mouth or prevent the onset of gum disease. Sandra Senzon enhances patients' oral health through traditional as well as holistic methods." –Barry Musikant, D.M.D. «This book allows the patient to be an active participant along with healthcare professionals.» –Jay P. Goldsmith, D.M.D. «There is a ray of hope at the end of the tunnel for all those who suffer from gum disease. We ultimately don't have to lose our natural teeth. Sandra Senzon shows us the many ways in which the mouth is connected to the body, and how, with the use of natural herbal products and proper mechanic techniques, you can reverse gum disease naturally.» –Joseph P. Green, D.O.S. Gum disease is the #1 oral health issue for Americans today-and simply brushing and flossing are not enough to avoid it. In this unique book, registered dental hygienist Sandra Senzon reveals how you can prevent and reverse gum disease through natural treatments. You'll get a new and broader understanding of your mouth as Senzon explains the causes of gum disease, along with the roles that stress, diet, and certain conditions such as diabetes can play in the onset of the disease. She shows you how to work with holistic products, set up an at-home hygiene center, and find the right professional to guide you in the natural reversal of gum disease. There's even a section for parents on how to help children practice good oral hygiene. Packed with expert tips and motivational strategies, Reversing Gum Disease Naturally will enable you to keep your gums and your teeth healthy and strong.


Английский язык для биологов. Naturally speaking (b1-b2) 2-е изд., испр. и доп. Учебное пособие для академического бакалавриата Английский язык для биологов. Naturally speaking (b1-b2) 2-е изд., испр. и доп. Учебное пособие для академического бакалавриата

Автор: Лилия Николаевна Шевырдяева

Год издания: 

Учебное пособие имеет своей целью дальнейшее совершенствование уже полученных навыков чтения и устной речи на основе прочитанных или прослушанных текстов. Пособие разработано на основе оригинальных современных неадаптированных текстов на английском языке, отобранных из научных монографий и журналов (Cell, Nature, Science, Scientific American, New Scientist, The Economist и др.). Тексты и задания рассчитаны на обучающихся среднего и продвинутого уровней (В1 В2+ и выше по Общеевропейской классификации степени владения иностранным языком) и содержат вопросы для обсуждения и упражнения, предполагающие наличие как достаточной лингвистической подготовки, так и знаний в сфере естественных наук.


Molecular Metal-Metal Bonds. Compounds, Synthesis, Properties Molecular Metal-Metal Bonds. Compounds, Synthesis, Properties

Автор: Stephen Liddle T.

Год издания: 

Systematically covering all the latest developments in the field, this is a comprehensive and handy introduction to metal-metal bonding. The chapters follow a uniform, coherent structure for a clear overview, allowing readers easy access to the information. The text covers such topics as synthesis, properties, structures, notable features, reactivity and examples of applications of the most important compounds in each group with metal-metal bonding throughout the periodic table. With its general remarks at the beginning of each chapter, this is a must-have reference for all molecular inorganic chemists, including PhD students and postdocs, as well as more experienced researchers.


Cinchona Alkaloids in Synthesis and Catalysis. Ligands, Immobilization and Organocatalysis Cinchona Alkaloids in Synthesis and Catalysis. Ligands, Immobilization and Organocatalysis

Автор: Choong Song Eui

Год издания: 

This comprehensive review of cinchona-based chiralilty inducers and their applications covers every topic, including ligands, immobilization and organocatalysis. Each chapter summarizes the scope and limitations of the new methods and technologies, while the final chapter contains carefully selected working procedures of cinchona alkaloid-promoted reactions organized according to reaction type. Invaluable reading for anyone wanting to learn about the current state of this hot topic.


Systemic Design Methodologies for Electrical Energy Systems. Analysis, Synthesis and Management Systemic Design Methodologies for Electrical Energy Systems. Analysis, Synthesis and Management

Автор: Xavier Roboam

Год издания: 

This book proposes systemic design methodologies applied to electrical energy systems, in particular analysis and system management, modeling and sizing tools. It includes 8 chapters: after an introduction to the systemic approach (history, basics & fundamental issues, index terms) for designing energy systems, this book presents two different graphical formalisms especially dedicated to multidisciplinary devices modeling, synthesis and analysis: Bond Graph and COG/EMR. Other systemic analysis approaches for quality and stability of systems, as well as for safety and robustness analysis tools are also proposed. One chapter is dedicated to energy management and another is focused on Monte Carlo algorithms for electrical systems and networks sizing. The aim of this book is to summarize design methodologies based in particular on a systemic viewpoint, by considering the system as a whole. These methods and tools are proposed by the most important French research laboratories, which have many scientific partnerships with other European and international research institutions. Scientists and engineers in the field of electrical engineering, especially teachers/researchers because of the focus on methodological issues, will find this book extremely useful, as will PhD and Masters students in this field.