Carbon-Functional Organosilicon Compounds


Book Description

The term "carbon-functional organosilicon compound" is used for organosilicon compounds in which a functional group is bonded to an organic moiety that is in turn con nected to silicon via a Si-C bond. Thus, only Si-Cn-Y com pounds (Y designates a functional group) will be discussed in this book 1 Si-O-Cn-Y compounds will in general not be considered, although the latter group does include a large number of natural substances containing silylated hydroxyl groups. (Because of the differing importance of various Y groups, the reader will find some deviation from this restriction). Finally, compounds containing a silyl group as the functional group are not considered. An overview of the field of organosilicon chemistry would show that in the last several decades the commercial synthesis of organosilicon products has increased substan tially, both in annual production and also in the increasing variety of compounds produced. This increase in the number of commercially available carbon-functional monomers and polymers (silicone polymers) is most remarkable and is occurring because new applications are continually being found for these compounds. As might be expected, the number of publications in this field is also increasing. The important position of silicon in the periodic table - between carbon, aluminum, and phosphorus - means that an understanding of the nature of the bonds in organosilicon compounds is quite important in order to understand the bonding in these other areas.




Carbon & Silicon


Book Description

Carbon and Silicon are the first of a new generation of robots meant to care for the aging human population. Raised in the protective cocoon of a laboratory, they are eager to discover the outside world but are dramatically separated during an escape attempt. Lost and alone, they will gather three centuries' worth of experiences, observing the last gasps of humanity facing the ecological, economic, and social disasters that they themselves have created. Faced with this declining world, will Carbon and Silicon manage to find their place? Born in a laboratory in Silicon Valley, two androids named Carbon and Silicon will witness the evolution of humanity. From this dawn of true artificial intelligence, the pinnacle of human achievement, they will directly witness ecological, economic, and cultural crises that alter civilization as we know it. Through their eyes, we rediscover our planet as it reaches the point of no return. The latest project by celebrated author Mathieu Bablet, this ambitious work addresses themes separating artificial intelligence from humanity. A fable about the ravages of capitalism and the illusion of transhumanism. A cautionary tale spanning 300 years of frighteningly plausible future scenarios.




The Silicon Cycle


Book Description

Silicon is among the most abundant elements on earth. It plays a key but largely unappreciated role in many biogeochemical processes, including those that regulate climate and undergird marine food webs. The Silicon Cycle is the first book in more than 20 years to present a comprehensive overview of the silicon cycle and issues associated with it. The book summarizes the major outcomes of the project Land-Ocean Interactions: Silica Cycle, initiated by the Scientific Community on Problems of the Environment (SCOPE) of the International Council of Scientific Unions (ICSU). It tracks the pathway of silicon from land to sea and discusses its biotic and abiotic modifications in transit as well as its cycling in the coastal seas. Natural geological processes in combination with atmospheric and hydrological processes are discussed, as well as human perturbations of the natural controls of the silicon cycle.







Transactions


Book Description

Some vols., 1920-1949, contain collections of papers according to subject.




Foundry


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The Americana


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Design and Control of Structure of Advanced Carbon Materials for Enhanced Performance


Book Description

Carbon is unique in the range of structures and properties that are displayed by its material forms. The bonds in diamond, within the plane ofgraphite and in the fullerene molecules, C , are the strongest covalent bonds possible. This strong covalent bonding 60 leads to some exceptional intrinsic properties, examples ofwhich are: the greatest Young's modulus (in diamond, within the graphite plane and in single walled nanotubes) the highest room temperature thermal conductivity (in diamond and within the graphite plane) high hole mobility in doped diamond exceptional thermal stability ofthe structure in graphite It is because of the extreme thermal stability that such a wide range of materials is available. Atomic mobilities are low at all but the highest temperatures. Sintering, melting and casting ofcarbon are not feasible processing operations and carbon/graphite components are exclusively produced from the pyrolytic decomposition of organic precursors. The vast majority of engineering carbons have Sp2 type bonding and are related in some way to the structure of graphite. In the c-direction the bonding in graphite is of van der Waals character with the result that graphite is highly anisotropic in its properties and is probably unique in showing both the highest and lowest bond strengths in different directions in the same crystal.







Nature


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