CONCEPTUAL DESIGN OF A 2000 kW NUCLEAR HEAT SOURCE SUITABLE FOR SPACE ELECTRIC POWER.

A conceptual design of a 2000 kW/sub/t Rankine system for nuclear-electric space power is described. The system includes a unique reactor-boiler unit operating at 1500°K that utilizes heatpipes in lieu of a conventionally pump primary loop. An efficient heatpipe radiator rejects waste hea at 1035°K. Overall system efficiency is 18.8% yielding a net electrical output of 375 kW. The system specific mass is 10 g/W including a generous shadow shield for unmanned payloads

Neurophysiology

Contains reports on one research project.Teagle FoundationOffice of Naval ResearchBell Telephone Laboratories, Incorporate

Neurophysiology

Contains reports on two research projects.Teagle Foundation, IncorporatedNational Institutes of HealthBell Telephone Laboratories, Incorporate

Neurophysiology

Contains reports on three research projects.Bell Telephone Laboratories, IncorporatedTeagle FoundationNational Science FoundationOffner Electronics, Incorporate

Neurophysiology

Contains reports on one research project.National Science FoundationOffner Electronics, IncorporatedTeagle FoundationBell Telephone Laboratories, Incorporate

Neurophysiology

Contains a report on a research project

Neurophysiology

Contains reports on four research projects.Bell Telephone Laboratories, IncorporatedThe Teagle Foundation, IncorporatedNational Science Foundatio

Neurophysiology

Contains reports on seven research projects.Bell Telephone Laboratories, IncorporatedNational Institutes of HealthTeagle Foundation, IncorporatedUnited States Air Force (WADD Contract AF33(616)-7783

Neurophysiology

Contains reports on five research projects.Bell Telephone Laboratories, IncorporatedNational Institutes of HealthTeagle Foundation, Incorporate

Testing the daytime oxidizing capacity of the troposphere: 1994 OH field campaign at the Izaña Observatory, Tenerife

A field campaign was carried out during May 1994 at the Izaña station, Tenerife. This campaign was part of the program Environment and Climate sponsored by the European Commission to study the influence of European emissions on the oxidizing capacity of a clean tropospheric environment. Daytime and also nighttime measurements were made, covering the OH as well as the NO3 chemistry. This paper presents the OH measurements taken with a multipass optical absorption spectrometer (MOAS) and discusses the daytime chemistry in a statistical and therefore more preliminary way. All relevant parameters influencing the OH concentration were monitored. From the data the two main contributions to the OH production can clearly be discerned and are given by the primary production following the ozone photolysis and the O(1D)-H2O reaction and by the catalytic reactions of NOx in the recycling process. The latter processes prove to contribute a dominant part to the OH concentration. The measurements of the nonmethane hydrocarbons (NMHC) especially of the biogenics, indicate a considerable influence of the NMHC on the absolute values of the OH concentration at Tenerife.This work has been financially supported by the European Commission (grant EV5V-CT93-0321), by the DFG, and by the Fonds der Chemischen Industrie, which is gratefully acknowledged