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Crystalline or, more properly, semi-crystalline polymers continue to present major challenges and opportunities to scientists and technologists alike. On the one hand, scientific understanding of their structure and properties still lags behind that of other economically important, but less complicated materials. On the other hand, there remains very considerable potential for improving properties in systems designed for specific pur poses. Ways are only just being found of transferring inherent molecular properties (such as high modulus) to the macromolecular solid. Beyond these are many possibilities of manipulating the organization of chemical and physical textures towards desired ends. T...
Over the last decade of the 20th century, many improvements took place in the field of metrology and fundamental constants. These developments and improvements are discussed in this book. The old caesium SI second definition has found a new realization with the fountain approach, replacing the classical thermal atomic beam. The use of cold atom techniques, slowed down and cooled, has opened a number of unexpected avenues for metrology and fundamental constants, one of these possibilities being the atom interferometry. Another development was the demonstration of the possiblility of performing a direct frequency division in the visible, using short femtosecond pulses. Many other developments are also discussed.
Child Anxiety Disorders, 2nd Edition, features sections on pharmacological and psychological interventions, sleep and anxiety disorders, and race, ethnic, and cultural factors in the area of childhood anxiety disorders.
The structure and volcanic activity of the northern Tanzania sector of the Gregory Rift Valley have hitherto been less well described than those in Ethiopia and Kenya. This book focuses on northern Tanzania where, although the volcanic area is smaller than those to the north, there are major features such as Kilimanjaro, the highest mountain on the African continent; Ngorongoro, one of the largest calderas on Earth; and Oldoinyo Lengai, the world's only active carbonatite volcano. Following an account of the discovery and early exploration of the rift valley, there are descriptions of the individual volcanoes. These are set within the context of the regional geology and geophysics of the rift valley, and in relation to the structural evolution of the rift and its associated sedimentary basins which include Olduvai, an important site in the history of human evolution The volume concludes with a discussion of the volcanism as related to the plume-related African Superswell.
1. K. Kano: Selectivities of Applied Chemistry 2. A. Pl}ckthun: Antibody Engineering to Study Protein-Ligand Interactions and Catalysis: The Phosphorylcholine Binding Antibodies 3. M.W. Hosseini: Supramolecular Catalysis of Phosphoryl Transfer Processes 4. G. von Kiedrowski: Minimal Replicator Theory II: Parabolic versus ExponentialGrowth 5. A. Bacher, W. Eisenreich, K. Kis, R. Ladenstein, G. Richter, J. Scheuring, S. Weinkauf: Biosynthesis of Flavins 6. C.L. Hannon, E.V.Anslyn: The Guanidinium Group: Its Biological Role and Synthetic Analogs.
The Second Edition of the handbook incorporates notable research advances throughout its comprehensive, up-to-date examination of this diverse and maturing field. Integrative state-of-the-art models document the complex interplay of risk and protective factors and other variables contributing to normal and pathological development. New and updated chapters describe current refinements in assessment methods and offer the latest research findings from neuroscience. In addition, the Second Edition provides readers with a detailed review across the spectrum of salient topics, from the effects of early deprivation to the impact of puberty. As the field continues to shift from traditional symptom-...
Includes entries for maps and atlases.