Although the first electroorganic reaction used in organic synthesis is probably the famous Kolbe electrolysis published in 1849, no other remarkable reactions have been found until the reductive dimerization of acrylonitrile to adipo nitrile was developed by Dr. M. M. Baizer of Monsanto Co. in 1964. Since then, the electro organic chemistry has been studied extensively with the expectation that it is a new useful tool for finding novel reactions in organic synthesis. The purpose of this book is not to give a comprehensive survey of studies on electrochemical reactions of organic compounds but to show that the electro organic chemistry is indeed useful in organic synthesis. Thus, this book has been written under the following policies. (1) Since this monograph is mainly concerned with organic synthesis, only few studies carried out from the view point of electrochemical, theoretical, or analytical chemistry are mentioned. (2) Since electroorganic chemistry covers a great variety of reactions, the types of reactions described in this book are selected mainly with regard to their application in organic synthesis. Simple transformations of functional groups are only described in particular cases, and also some well established processes such as the Kolbe electrolysis, pinacolic coupling, and hydrodimerization are only briefly mentioned. (3) Since many reports have already been published for each type of these reactions, only a limited number of the relevant papers are cited in this book.
To facilitate sustainable management of logged forests in the Caribbean, forest authorities of Belize, Guyana, Suriname, and Trinidad and Tobago, jointly with the Food and Agriculture Organization of the United Nations and the University of Hamburg as a scientific partner, implemented the regional project “Ensuring Long-Term Productivity of Lowland Tropical Forests in the Caribbean” financed by the German Federal Ministry of Food and Agriculture. The main objective of the project was to support the sustainable management of logged forests to maintain productivity and prevent further degradation. For this purpose, extensive field studies were conducted in the project countries, which resulted in silvicultural recommendations presented in this publication. The project findings revealed that the application of general sustainable forest management protocols for tropical production forests that set limits on harvesting does not necessarily ensure sustained productivity if the composition and management of the residual stand are not considered. The ratio of the number of harvested trees to the remaining future crop trees can provide a simple indicator of the sustainability of harvest. If the current harvest exceeds the number of future crop trees, the harvest is not sustainable. As a rule of thumb, at least one, preferably two future crop trees per harvested tree should be retained for future use. Protection of future crop trees can be a simple and practical approach to prevent high grading and degradation of the forest growing stock. The importance of reduced impact logging to reduce unnecessary damage to the future crop trees and for sustainable forest management, in general, is stressed.
Forests harbour a large proportion of the Earth’s terrestrial biodiversity, which continues to be lost at an alarming rate. Deforestation is the single most important driver of forest biodiversity loss with 10 million ha of forest converted every year to other land uses, primarily for agriculture. Up to 30 percent of tree species are now threatened with extinction. As a consequence of overexploitation, wildlife populations have also been depleted across vast areas of forest, threatening the survival of many species. Protected areas, which are considered the cornerstone of biodiversity conservation, cover 18 percent of the world’s forests while a much larger 30 percent are designated primarily for the production of timber and non-wood forest products. These and other forests managed for various productive benefits play a critical role in biodiversity conservation and also provide essential ecosystem services, such as securing water supplies, providing recreational space, underpinning human well-being, ameliorating local climate and mitigating climate change. Therefore, the sustainable management of all forests is crucial for biodiversity conservation, and nations have committed to biodiversity mainstreaming under the Convention on Biological Diversity (CBD). Mainstreaming biodiversity in forestry requires prioritizing forest policies, plans, programmes, projects and investments that have a positive impact on biodiversity at the ecosystem, species and genetic levels. In practical terms, this involves the integration of biodiversity concerns into everyday forest management practice, as well as in long-term forest management plans, at various scales. It is a search for optimal outcomes across social, economic and environmental dimensions of sustainable development. This study is a collaboration between FAO and the Center for International Forestry Research (CIFOR), lead centre of the CGIAR research programme on Forests, Trees and Agroforestry (FTA). Illustrated by eight country case-studies, the report reviews progress and outlines the technical and policy tools available for countries and stakeholders, as well as the steps needed, to effectively mainstream biodiversity in forestry.
Two men born with different backgrounds who were destined to collide in Dallas, Texas. One man came from a family of great wealth and power, while the other man came from a family who struggled for everything they ever had. One stood for peace while the other man stood for confusion and deceit. President John F. Kennedy had a dangerous goal in mind: end the Cold War in his lifetime. Lee Harvey Oswald was a pawn used by his employers, the Central Intelligence Agency, to stop President Kennedy from reaching his goal. This is a fictional re-telling of the events which led up President Kennedy's Assassination. It tells how President Kennedy fought to spread his message of world peace, and how the CIA stopped him at every turn.
Winner of the Pen Center West Award A stunning tapestry of everyday life. A young man, having failed his college entrance exams, becomes obsessed with a family card game. A businessman stays overnight at an inn and drinks with the innkeeper. A family parakeet seems to be dead but then climbs back on its perch. This delicate collection of thirteen linked tales reveals the flow of daily life in the modern Japanese family. Junzo Shono's artful layering of commonplace events, images, and conversations has been compared to haiku poetry crossed with an Ozu film.
Mangrove ecosystems play a critical role in harbouring biodiversity and providing a variety of ecosystem services. The need for developing better techniques for classifying and monitoring mangroves is increasing, especially with the growing demand in blue carbon markets. However, many countries are challenged by the need to improve their mangrove cover estimates to inform decision-making on coastal land use and to guide local conservation efforts including restoration planning. This manual was developed to help overcome this problem by providing guidance, specifically targeted to build capacity for mangrove resource managers on how to use and take advantage of the latest technologies in mapping and monitoring mangroves. It enables collection of data that informs conservation decision-making, guiding the planning of mangrove restoration and protection activities that will ultimately lead to enhanced management and conservation of mangroves. In addition, case studies are presented on estimating mangrove extent, structure, condition and change, using a range of remote sensing-derived sources that are focused on < 5-m spatial resolution.
Mangrove ecosystems play a critical role in harbouring biodiversity and providing a variety of ecosystem services. The need for developing better techniques for classifying and monitoring mangroves is increasing, especially with the growing demand in blue carbon markets. However, many countries are challenged by the need to improve their mangrove cover estimates to inform decision-making on coastal land use and to guide local conservation efforts including restoration planning. This manual was developed to help overcome this problem by providing guidance, specifically targeted to build capacity for mangrove resource managers on how to use and take advantage of the latest technologies in mapping and monitoring mangroves. It enables collection of data that informs conservation decision-making, guiding the planning of mangrove restoration and protection activities that will ultimately lead to enhanced management and conservation of mangroves. In addition, case studies are presented on estimating mangrove extent, structure, condition and change, using a range of remote sensing-derived sources that are focused on < 5-m spatial resolution.
This will help us customize your experience to showcase the most relevant content to your age group
Please select from below
Login
Not registered?
Sign up
Already registered?
Success – Your message will goes here
We'd love to hear from you!
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.