Calculations based on several established pathways leading from cholestrol to pregneonlone account for only a small fraction of the total, experimentally found, pregnenolone, when calculated for an obligatory 20- or 22-hydroxy intermediate.

The experimental details and the calculational specifications for a CSEWG integral data test shielding experiment are presented. The shielding experiment described in the benchmark model is a combination of sodium and stainless steel that simulates the FFTF radial shield. The measurements in general include use of foil activation techniques using resonance and threshold detectors and proton recoil neutron spectrometer measurements in the range 5 kev to 2 MeV. The benchmark model is a test of the neutron cross-section data for sodium and the material components of stainless steel.

This report describes the results from work performed during the contract period of July 1, 1972 through June 30, 1973.

None

None

None

None

None

None

None

None

None

None

None

None

None

Measurements of the voltage and currcnt that resulted from a quench of a superconducting magnet were studied and a simple computer model of this process was developed. Large layer-tolayer voltages were generated by the quench and methods reducing these were suggested and examined. (auth)

During the quarter covered (October 15, 1972 to February 15, 1973), additional models of the nuclear engine were implanted in calves to evaluate the chronic effects of weight and size. Further characterization of the bench test heart pump was performed, The effect of pump rate on cardiac output was evaluated. The effect of outflow (anterial) pressure on cardiac output was evaluated. Bjork- Shiley valves with stainless steel disks and pyrolitic carbon disks were tested and the effect of cardiac output evaluated. A design of a quick connect system to enable rapid connection of the atrial cuffs and anterial graphs to the blood pump was undertaken. Molds of the implantable version of the ventricles were completed, and construction techniques and evaluation of the ventricles is now in progress. A protocol for the implantation of the pump mechanism into calves for testing is under consideration. (auth)

This report surveys those areas of plasma physics and controlled thermonuclear research in which computation has made significant contributions. Both fluid and particle models are considered, and applications to specific confinement experiments and plasma theory are discussed. (auth)

A literature searcha nd preliminary experiments were carried out to determine the feasibility of reducing salt waste volumes by the removal of sodium and purifying the sodium as metal for reuse or less restricted storage for use in the long-term storage of Hanford's radioactive salt waste. Included in the experimental part of the study were oxalate precipitation of sodium, preparation of chloride feed for ecletrolysis, denitration experiments, carbon reduction of sodium-cesium compounds, and distillation of sodium metal for decontamination. Eaeh of these steps was found tn be feasible, but mans problems exist. The most favorable process probable includes: evaporation and denitratipn (possibly preceded be a scavenging precipitatioal, reduction with carbon and distillation or sodium metal from the reaction mixture at low pressures, and purification of sodium metal be filtration and distillaton. At alternative to the first step might be oxalate precipitaton of the sodium. Considerable development work remains before at integrated process could be demonstrated. (auth)

A method for determining the eigenvalues for the scalar Helmholtz equation in the elliptic cylinder coordinate system is described. Complex expansion parameters are considered so that numerical results for physical problems involving energy dissipation as well as energy flow can be obtained. Sample numerical results are presented for the eigenvalues, radial eigenfunctions, and angle eigenfunctions. Applications of these results are discussed. (auth)

None

A seismic evaluation of the Livermore Pool Type Reactor Facility located at the Lawrence Livermore Laboratory was conducted as part of a safety analysis being prepared for the Atomic Energy Commission. The safe shutdown earthquake for the Lawrence Livermore Laboratory site is defined, along with a brief discussion of its basis. The method of analysis and results are summarized for all critical components. It is concluded that the biological shield and containment building should withstand the safe shutdown earthquake without failures. The crane and heat exchanger could fail under worst-case loading conditions. Recommendations for modifying the crane and heat exchanger support are presented. (auth)

Aspects of hot-rolling cast-beryllium billets canned in 304 stainless steel are examined. Emphasis is placed on the development of the proper rolling schedule to completely convert the columnar cast structure to a uniform equiaxed one. Also emphasized are curling difficulties found in rolling this two-metal composite. The curling is found to depend chiefly on friction between ths billet and work rolls. Lubrication and roll surface finish are found to be the key variables which in turn control friction. Curling is best prevented by having a higher friction coefficient on the bottom billet surface than on the top during rolling. (auth)