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Applications of synchrotron radiation in physics, chemistry,
materials science, and biology has now matured from an exotic
experimental field into a well-established area of science. The
spectroscopy of molecules and molecular adsorbates on surfaces is
one area of science, where, in the past,
synchrotron-radiation-related studies had made an impact on
understanding the ground-state properties as well as the dynamics.
With the new high-brightness synchrotron-radiation sources ahead,
this will certainly continue to be a field of very active research.
This quasi-monograph reviews the current state of the field for
both, the active research scientist, and the new graduate student
wishing to become acquainted with this field of research.
5) To what extent do events occurring during regeneration re semble
those seen in development? Questions like these remain open,
particularly in relation to the mammalian central nervous system
and to the effects of lesions or disease. The first chapters of
this volume are concerned primarily with normal and abnormal
development of the nervous system. New concepts have emerged over
the past few years as a result of experiments made on the
development of the higher nervous system in mammals. Thus, the
principles of cell death, competition, selective retraction of
specific processes, and the effects of abnormalities on the
development of the rest of the system have now been extensively
investigated. In addition, considerable information is available
about biochemical changes during normal and abnormal development in
the human. At the other end of the scale, in invertebrates it is
now possible to follow cell lineage and to define the origin and
fate of a sin gle neuron of known function together with its
processes. While an understanding of development is clearly
important for studying basic mechanisms of repair and regeneration,
one cannot expect the processes to be identical or even comparable
in the two situations. For example, cell migration, guidance by
radial glial fibers, selective cell death, and the critical periods
for competition, sprouting, and retraction observed in the visual
system can hardly playa part in repair."
Surface Science is understood as a relatively young scientific
discipline, concerned with the physical and chemical properties of
phenomena on clean and covered solid surfaces, studied under a
variety of conditions. The adsorption of atoms and molecules on
solid surfaces is, for example, such a condition, connected with
more or less drastic changes of all surface properties. An
adsorption event is frequently observed in nature and found to be
of technical importance in many industrial processes. For this
reason, Surface Science is interdisciplinary by its very nature,
and as such an important intermediary between fundamental and
applied research.
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