In a study of three 2D radiative transfer methods, equilibrium diffusion, nonequilibrium diffusion, and S/sub n/, as applied to the interaction of the reflected shock with a fireball near the surface, the following results were obtained. The equilibrium diffusion method requires modifications to transfer energy through optically thin zones. The present S/sub n/ method, as included in YAQUI-SN, i.e., the TWOTRAN code, has troubles in the treatment of a thick/thin interface. Improvements are possible using methods developed by I. Grant (J. Comput. Phys., v. 2, no. 4, 381-402(June 1968)) or D. Barfield (ibid., v. 10, no. 3, 420-431(Dec. 1972)). The nonequilibrium diffusion or moments method appears to be the most useful since it will limit properly in the optically thick and thin regions, but methods to determine the variable Eddington factors have not been successfully developed as yet. 7 figures.

This report addresses the performance of circuits produced by etching a pattern in thin aluminum foil bonded to a Mylar substrate, which depends on the uniformity of that aluminium foil.

An analysis is presented for the steady-state response of a circular cylindrical rod subjected to a plane wave; rod displacement natural frequency including fluid inertia effect, and radiation damping, are obtained in closed form. It is shown that the added mass coefficient depends only on the nondimensional wave number ..cap alpha.. and the radiation damping zeta/sub r/ depends on ..cap alpha.. and mass ratio ..beta... The rod displacement is proportional to wave amplitude and rod radius, and depends on ..cap alpha.. and ..beta...

The design and operating criteria to be used in the Advanced Thermal Energy Storage Study are described. The storage system operating requirements and design standards are outlined and the corresponding power plant interface requirements are given. Each of the three alternative high temperature thermal energy storage systems (phase change, thermochemical, and sensible heat) is described. The approach and criteria to be used in developing energy cost numbers are described, and the systems requirements data and the requirements perturbations to be used in the trade studies are summarized. All of the requirements data to be used are compiled. (LEW)

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.

Semiweekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.

An analysis of the reliability of the Shutdown Heat Removal System (SHRS) for the Clinch River Breeder Reactor (CRBR) was performed using Markov analysis models. Seven initiating events were considered. The system description and the failure and repair data were based on the Preliminary Safety Analysis Report of the CRBR. The study identified several areas to which the reliability of the SHRS is sensitive. To achieve high reliability shutdown heat removal, improvements in these areas or verification of their adequacy is required. These areas included the availability of the Auxiliary Feedwater System, the capability of the SHRS to operate on one-loop natural-circulation and the low probability of the failure of two heat transport loops causing the reactor to shut down.

The least squares technique commonly used for refining crystal structures is neither robust (min variance with errors in experimental data) nor resistant (not highly dependent on any small subset of data). Other methods of fitting are being developed which are more robust/resistant, and this paper endeavors to apply these methods to crystal structure refinement. The Tukey biweight W-function succeeds in minimizing the influence of poor data. (DLC)

This report describes and summarizes the activities of the applied sections and/or groups of the Health Physics Division. Projects and activities covered include personnel monitoring, environmental monitoring, radiation and safety surveys, and industrial safety. (CH)

This report describes the activities of the Los Alamos Nuclear Data Group for the period January 1 to March 31, 1976. The following areas are discussed: Theory and evaluation of nuclear cross sections, including calculations of neutron cross sections; Nuclear cross-section processing, including developments concerning the computer codes used; Cross sections for HTGR safety research; Effect of dispersion matrix structure on a data adjustment and consistency analysis; Fission product and decay data studies; and Medium-energy library. 20 figures, 18 tables. (RWR)

This report addresses the complications of program abstracts from the Argonne Code Center.

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The tests of quantum electrodynamics derived from bound systems and the free electron and muon magnetic moments are reviewed. The emphasis is on the areas in which recent developments in theory or experiment have taken place. Also determinations of the fine structure constant from the Josephson effect and the fine structure of helium are discussed. (JFP)

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

The ability to perform 100-percent electrical probe testing of beam lead devices (BLD) at temperatures from 0 to 50/sup 0/C was developed. Correlation of probe test results to bonded sample test results from --55 to 100/sup 0/C was established for some parameters on transistors, diodes, and Zener diodes. The tests performed on transistors included collector-to-emitter leakage, collector-to-base leakage, current gain, and collector-emitter saturation voltages. Reverse leakage current tests were performed on diodes and Zener diodes in addition to forward voltage drop on diodes and Zener voltage on Zener diodes. It was determined from these tests that, in nearly all cases, probe testing can be performed at room temperature to assure a limit at temperature extremes once the exact temperature dependence of the parameter is known for a lot of devices. No waxes compatible with either vendor or Bendix Kansas City Division BLD processing are presently available which will allow testing at temperatures above 50/sup 0/C.

The chemical and physical properties of uranyl nitrate--tributyl phosphate adduct (UO/sub 2/) (NO/sub 3/)/sub 2/(TBP)/sub 2/ were studied to define optimum, safe operating conditions for denitration of uranyl nitrate (UN) solutions containing low concentrations of adduct. The distribution of TBP between aqueous UN solutions and organic phases (TBP pure or diluted in n-paraffin) was measured. Specific gravity measurements confirmed published data for aqueous UN solutions, but disagreed with literature data for 100 percent TBP. Intersection of the UN specific gravity curve and the 100 percent TBP data of this work indicated that phase inversion cannot occur when the aqueous phase contains greater than or equal to 330 g U/1. Thermal decomposition of adduct occurs in one gradual weight loss step below 170/sup 0/C and in two successive steps above 170/sup 0/C. Rate constants for the first reaction were calculated for 130 to 210/sup 0/C. The major flammable decomposition product was l-butene; inorganic gases formed were N/sub 2/, NO, N/sub 2/O, CO, and CO/sub 2/. Adduct decomposition during denitration of UN was characterized by foaming and by gas evolution (mostly nonflammable) at 135 to 185/sup 0/C. Maximum flammable gas evolution and potential self-heating by TBP oxidation were calculated.

Monthly newspaper from Washington, District of Columbia published to promote interest in the observance of and participation in the American Bicentennial.

Text of speech by Barbara Jordan regarding black lawyers working within a legal system in need of reforms.

Speech associated with the National Bar Association in Houston Texas, entitled "The Black Lawyer: Explorer & Reformer." The body of the text is crossed out with a hand-drawn "X."

The requirements of an overall program to preserve the integrity of a repository formation are documented. The repository is intended to be in stable earth stratum used as a safe and permanent storage area for nuclear waste material. These wastes represent an environmental hazard for a period of up to 200,000 years. An engineering analysis, a reliability and quality-assurance program, and a development program for borehole plugging by compaction process, using natural earthen materials, are presented. Part 1 provides the engineering analysis of downhole compaction methods and related instrumentation along with a recommended development plan from concept through a pilot in-situ experiment. Part 2 provides a reliability and quality-assurance program from laboratory testing of materials through an in-situ experiment.

Daily newspaper from Brownwood, Texas that includes local, state, and national news along with advertising.

Component parts of small precision mechanisms typically require nearly sharp edges to assure reliable operation. A burr-free condition also is needed to minimize a possible jamming of the mechanism because of burrs breaking loose. Small burrs are easily removed by many deburring processes. Increasing the feedrate resulted in longer exit burrs from 303Se stainless steel and 1018 steel. Drill geometry, workpiece materials, and workpiece thickness also affected the exit-burr length. Radial-lip drills produced shorter exit burrs at fast feedrates in 303Se stainless steel than did the other drills, and they produced thinner exit burrs at all feedrates. Little difference was observed in the results from different drill points used in other materials. Burr size varied with the number of holes drilled in a typical wear-life pattern. Exit-burr thickness was a linear function of exit-burr length for the stainless steel specimens. No relationship between these properties was observed for either 1018 steel or 6061-T6 aluminum. The use of a backup material having a hole equal in diameter to that of the drill resulted in significantly shorter and thinner exit burrs than did any other drilling method studied.

An investigation was conducted to determine the influence of variables in controlling the size and repeatability of grinding burrs to minimize burr-removal costs and improve the quality and reliability of parts for small precision mechanisms. Each of the three types of burrs produced by surface-grinding a rectangular block responds differently to changes in cutting conditions. Reducing the downfeed rate generally produces shorter burrs. Although the size of the abrasive grain affected the thickness of one of the burrs, thickness was relatively unaffected by the variables studied. The thickest burrs occurred on low-carbon steel.

Self-broadened and foreign-gas (N/sub 2/ and O/sub 2/) broadened linewidths of H/sub 2/S at 300/sup 0/K for a wide range of quantum numbers J and K/sub a/, for both type A and type B bands, have been calculated using the Anderson-Tsao-Curnutte theory of line broadening. In the case of H/sub 2/S-H/sub 2/S collisions, dipole-dipole, dipole-quadrupole, quadrupole-dipole, and quadrupole-quadrupole interactions have been included. For H/sub 2/S-N/sub 2/ and H/sub 2/S-O/sub 2/ collisions, dipole-quadrupole and quadrupole-quadrupole interactions were taken into account. Computed values for self-broadened linewidths are in good agreement with the experimental results of Helminger and De Lucia. Air-broadened linewidths of H/sub 2/S at 200/sup 0/K have also been calculated, so that the temperature dependence can be established.