October - December 1996, Volume 17, Number 4


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Research and Development Updates


Basic Research/Systems Development

   Jupiter--At Last!
   D. J. Williams


Applied Research

   Diurnal Variation of Desert Midwave Infrared Images
   K. T. Constantikes, M. E. Thomas, and E. D. Claussen

   Design of Cathodic Protection of Rebars in Concrete Structures: An Electrochemical Engineering Approach
   R. Srinivasan, P. Gopalan, P. R. Zarriello, C. J. Myles-Tochko, and J. H. Meyer

   Use of a NASA-Developed Ion Exchange Material for Removal of Zinc from Electroplating Baths
   O. M. Uy, M. J. Ginther, J. T. Folkerts, and K. W. Street, Jr.



   A Novel Solid-State Oxygen Sensor
   A. E. Colvin, Jr., T. E. Phillips, J. A. Miragliotta, R. B. Givens, and C. B. Bargeron

   Coherent--Opportunities and Demands
   R. Rzemien

   Fifteen Years of Satellite Tracking Development and Application to Wildlife Research and Conservation
   W. S. Seegar, P. N. Cutchins, M. R. Fuller, J. J. Suter, V. Bhatnagar


System Test and Evaluation

   System-Level Testing in Operational Environments
   I. D. Rapport, G. W. Balkcom, C.R. Stirrat, and R. L. Wilson



   Publications and Presentations

   Author and Subject Indexes

The cover: Jupiter, giant of the Sun's planetary family, is shown suspended over a background picture of its own surrealistic atmosphere near the famous red spot. The NASA Galileo spacecraft arrived on 7 December 1995 and began an amazing scientific exploration of Jupiter's atmosphere, magnetoshere, and moons. the lines depict the approach of Galileo to Jupiter and the resulting orbital tour now being conducted through the Jovian environment. Having successfully returned data from the first probe ever to penetrate Jupiter's (or any outer planet's) atmosphere, Galileo now is returning new data from the magnetosphere and from a series of very close flybys of the Galilean moons. An APL perspective of the 20 years taken to reach the present stage of the mission is described in the article by D. J. Williams in this issue. (Cover illustration by Kenneth R. Moscati.)

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© 1996 by The Johns Hopkins University Applied Physics Laboratory

The Electronic Version of The Johns Hopkins APL Technical Digest was created by the Technical Publications Group (TIR).