The Committee on High Energy Density Plasma Physics was established in April
2001 by the National Research Council’s (NRC’s) Board on Physics and Astronomy
to identify scientific opportunities and develop a unifying theme for research on
matter under extreme high energy density conditions.
Dramatic progress has been made in all branches of physics since the National Research Council's 1986 decadal survey of the field. The Physics in a New Era series explores these advances and looks ahead to future goals. The series includes assessments of the major subfields and reports on several smaller subfields, and preparation has begun on an overview volume on the unity of physics, its relationships to other fields, and its contributions to national needs.
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Astronomy is the most ancient science humans have practiced on Earth.
It is a science of extremes and of large numbers: extremes of time – from the
big bang to infinity –, of distances, of temperatures, of density and masses,
of magnetic field, etc.
The coexisting systemof VOCs is complex. A small change
in environmental conditions (e.g., temperature) may result
in changes on VOC concentrations, and also some VOCs
may be involved in chemical reactions during the trans-
portation. Meanwhile, as a consequence of high density of
petroleumrefineries, synthetic organic chemical plants, and
variousmobile sources, the formation rate and concentration
of ozone in theHouston area are extremely high, and propene
becomes a dominant reactive hydrocarbon (20).
Water quality. Water draining off newly graded surfaces and roads or oil
or water accidentally discharged during oil and gas production can
increase the amount of sediment, salt, and pollutants discharged into
rivers and streams, thereby degrading them. In addition, shallow aquifers
can be polluted if required protective measures are not in place, and the
production of methane gas from coal beds can deplete shallow aquifers
that serve as domestic water sources.