Research in life sciences instrumentation pertinent to studies in space biology Quarterly progress report, 1 Apr. - 30 Jun. 1967

Brain probes, multichannel telemetry devices, and telemetric brain temperature sensors for space biology studie

Subminiature micropower digital recorder

High-density digital data, collected periodically or randomly from multiplicity of sensors, are recorded by subminiature recorder. Magnetic recording head is energized with suitable pulsatile signals to reverse polarization on magnetically-sensitive tape while tape is immobilized at recording head. Prior to next recording, set tape so new area of tape is at recording head

Modeling material failure with a vectorized routine

The computational aspects of modelling material failure in structural wood members are presented with particular reference to vector processing aspects. Wood members are considered to be highly orthotropic, inhomogeneous, and discontinuous due to the complex microstructure of wood material and the presence of natural growth characteristics such as knots, cracks and cross grain in wood members. The simulation of strength behavior of wood members is accomplished through the use of a special purpose finite element/fracture mechanics routine, program STARW (Strength Analysis Routine for Wood). Program STARW employs quadratic finite elements combined with singular crack tip elements in a finite element mesh. Vector processing techniques are employed in mesh generation, stiffness matrix formation, simultaneous equation solution, and material failure calculations. The paper addresses these techniques along with the time and effort requirements needed to convert existing finite element code to a vectorized version. Comparisons in execution time between vectorized and nonvectorized routines are provided

Space related biological and information studies Annual report, Mar. 1968 - Mar. 1969

Space related biotelemetry research - multichannel implantable telemeter, subcarrier oscillator, and ion concentration transducer

Space and related biological and instrumentation studies

Research and experimental effort was carried out on high-density photo-optical recorder design, implantable pH electrodes and the mangetic/doppler blood-flow sensor

Instrumentation for Biological Research, Volume I, Sections 1 to 3 Final Report, Nov. 9, 1964 - Mar. 31, 1966

Bioinstrumentation for controlling and measuring parameters interacting with biological syste