Investigation of Implantable Multichannel Biotelemetry Systems Semiannual Report, Mar. 1 - Aug. 31, 1966

Integrated-circuit multiplexed telemetry systems for biomedical application

An analytical investigation of acquisition techniques and system integration studies for a radar aircraft guidance research facility, phase 2

A review of user requirements and updated instrumentation plans are presented for the aircraft tracking and guidance facility at NASA Wallops Station. User demand has increased as a result of new flight research programs; however, basic requirements remain the same as originally reported. Instrumentation plans remain essentially the same but with plans for up- and down-link telemetry more firm. With slippages in the laser acquisition schedule, added importance is placed on the FPS-16 radar as the primary tracking device until the laser is available. Limited simulation studies of a particular Kalman-type filter are also presented. These studies simulated the use of the filter in a helicopter guidance loop in a real-time mode. Disadvantages and limitations of this mode of operation are pointed out. Laser eyesafety calculations show that laser tracking of aircraft is readily feasible from the eyesafety viewpoint

Investigation of implantable multichannel biotelemetry systems Semiannual report, Sep. 1966 - Mar. 1967

Techniques for fabrication of multiple-channel physiologically implantable telemetry system

Turbulence characteristics of an axisymmetric reacting flow

Turbulent sudden expansion flows are of significant theoretical and practical importance. Such flows have been the subject of extensive analytical and experimental study for decades, but many issues are still unresolved. Detailed information on reacting sudden expansion flows is very limited, since suitable measurement techniques have only been available in recent years. The present study of reacting flow in an axisymmetric sudden expansion was initiated under NASA support in December 1983. It is an extension of a reacting flow program which has been carried out with Air Force support under Contract F33615-81-K-2003. Since the present effort has just begun, results are not yet available. Therefore a brief overview of results from the Air Force program will be presented to indicate the basis for the work to be carried out

A radar-echo model for Mars

Researchers developed a radar-echo model for Mars based on 12.6 cm continuous wave radio transmissions backscattered from the planet. The model broadly matches the variations in depolarized and polarized total radar cross sections with longitude observed by Goldstone in 1986 along 7 degrees S. and yields echo spectra that are generally similiar to the observed spectra. Radar map units in the model include an extensive cratered uplands unit with weak depolarized echo cross sections, average thermal inertias, moderate normal refelectivities, and moderate rms slopes; the volcanic units of Tharsis, Elysium, and Amazonis regions with strong depolarized echo cross sections, low thermal inertia, low normal reflectivities, and large rms slopes; and the northern planes units with moderate to strong depolarized echo cross sections, moderate to very high thermal inertias, moderate to large normal reflectivities, and moderate rms slopes. The relevance of the model to the interpretation of radar echoes from Mars is discussed

Reversal Modes of Simulated Iron Nanopillars in an Obliquely Oriented Field

Stochastic micromagnetic simulations are employed to study switching in three-dimensional magnetic nanopillars exposed to highly misaligned fields. The switching appears to proceed through two different decay modes, characterized by very different average lifetimes and different average values of the transverse magnetization components.Comment: 3 pages, 4 figure

Investigation if implantable multichannel biotelemetry systems Semiannual report, Sep. 1967 - Feb. 1968

Operation and maintenance of multichannel, physiologically implantable telemetering systems for biological measurement

Transportation of Poultry and Poultry Products from the North Central States

This study was designed to analyze the transportation factors involved in the movement of poultry and poultry products from origins in the North Central Region. The commodities were transported by two media-railroads and motor carriers. Because data currently published by private and public sources do not adequately nor accurately cover the factors analyzed in this report, it was necessary to work directly with the records of cooperating shippers and carriers. Until such time as public regulatory agencies or carrier associations require or encourage the reporting of this data by all carriers, this technique will continue to be necessary, if transportation elements of a marketing problem concerning individual commodities are to be seriously examined

Transportation of Poultry Feed Ingredients from the North Central States

This study should be useful to poultry producers and processors in the North Central States, for it points out the methods used and charges incurred in the movement of the commodities from these states to competing regions. As more efficient methods of transportation are utilized, costs usually decline; and lowered costs of feed in the competing poultry producing areas mean more intensive price competition on dressed poultry between these areas and the North Central States which originate the feed ingredients

Transportation of livestock and meats from Iowa

The economic productivity of a region or state, despite its potential, cannot be greater than the value of its products in consuming areas, less transportation costs. Therefore, efficiency of transportation systems limits the productivity of areas distant from markets and influences the patterns of productive methods.https://lib.dr.iastate.edu/specialreports/1057/thumbnail.jp