A number of candidate turbine materials are being evaluated for their resistance to erosion, corrosion, and stress corrosion cracking (SCC) in geothermal brines. These materials include Fe-, Ni-, Co and Ti-base alloys, coatings and ceramics. Tapered wearblades, simulating the leading edge of a turbine blade, are exposed to the direct impact of a two-phase nozzle exhaust. Bent beam SCC specimens, which are constrained in fixtures attached to the wearblade holders, are also exposed to this exhaust. Results of a test series are reported in which acidified liquid brine was expanded to atmospheric pressure are reported. The tests were performed at the LLL Field Test Station near Niland in the Salton Sea Geothermal Field. Evaluation of the exposed materials indicates that Ti-base alloys show the most promise for turbine wheel components in the high salinity geothermal environments.

This Gruy Federal Type II-B prospect was drilled as the Superior Oil Company No. 1 Watkins-Miller, API designation 17-023-20501 and is located in Section 5, T15S, R5W, Cameron Parish, Louisiana. The well site is just north of lot 39 on Indian Point Island and is readily accessible from state highway Route 82 and a shell road in good condition. Superior Oil completed this well in late 1970 as a dual gas producer in sands between 11,150 and 11,250 feet but eventually abandoned the well in December, 1974. The cellar of the well is still visible on the site. This location is shown on the lower portion of USGS topographic sheet ''Grand Lake West'' in the map pocket of the Gruy Federal report ''Investigation and Evaluation of Geopressured-Geothermal Wells, Prospective Test Wells in the Texas and Louisiana Gulf Coast'', February 28, 1978.

A method is described whereby the absolute radiative quantum efficiency of paramagnetic ions in liquids or solids can be determined from photoacoustic measurements. 1 figure.

Attenuation results from geometric spreading and from absorption. The former is almost independent of crustal geology or physiographic region. The latter depends strongly on crustal geology and the state of the earth's upper mantle. Except for very high-frequency waves, absorption does not affect ground motion at distances less than 25 to 50 km. Thus, in the near-field zone, the attenuation in the eastern United States will be similar to that in the western United States. Most of the differences in ground motion can be accounted for by differences in attenuation caused by differences in absorption. The other important factor is that for some Western earthquakes the fault breaks the earth's surface, resulting in larger ground motion. No Eastern earthquakes are known to have broken the earth's surface by faulting. The stress drop of Eastern earthquakes may be higher than for Western earthquakes of the same seismic moment, which would affect the high-frequency spectral content. This factor is believed to be of much less significance than differences in absorption in explaining the differences in ground motion between the East and the West. 6 figures.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Crawford Martin, regarding a legal question submitted for clarification;Compensation of members of the Board of Commissioner of the Chambers liberty Counties Navigation District.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Crawford Martin, regarding a legal question submitted for clarification;Validity of certain rules and regulations of the State Health Department.

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification; The Scope and Validity of Senate Bill 183.

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification: Is the provision in rider to general appropriations bill requiring railroads to contribute to the costs of warning devices valid?

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification: The constitutionality of HJR 25 providing that certain counties and cities on the coast may issue bonds for construction of seawalls and breakwaters upon vote of majority resident taxpayers.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification; Authority of the Chairman of the Texas Employment Commission.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification: Whether Hospital District may assume duties and functions of city and county health departments and related questions concerning taxation and funding.

The fluxes of protons emitted during solar flares since 1956 were evaluated. The depth-versus-activity profiles of /sup 56/Co in several lunar rocks are consistent with the solar-proton fluxes detected by experiments on several satellites. Only about 20% of the solar-proton-induced activities of /sup 22/Na and /sup 55/Fe in lunar rocks from early Apollo missions were produced by protons emitted from the sun during solar cycle 20 (1965--1975). The depth-versus-activity data for these radionuclides in several lunar rocks were used to determine the fluxes of protons during solar cycle 19 (1954--1964). The average proton fluxes for cycle 19 are about five times those for both the last million years and for cycle 20. These solar-proton flux variations correlate with changes in sunspot activity.

This is a catalog of all samples which have been collected and the presently available results of chemical and other analyses. Types covered include: air quality, water quality, ecosystem quality, subsidence and seismicity, remotely sensed data, socioeconomic effects, and measurements of radioactivity. (MHR)

One of the most important investigations to be conducted during the early operation of NAL is the search for quarks. Several experiments have been proposed which will investigate quark production via the strong interaction. As we discuss below, however, there are serious arguments to suggest that the mass limits obtained will not be significantly higher than the current limits of 4 to 5 GeV. To circumvent these objections we propose a simple experiment based on e1ectromagnetic production of quarks. It would run inside the main ring with photons produced in the rotating c-o target. No presently approved quark experiment is sensitive to such production without modification of its proposed set-up.

Further progress is reported on a continuing experimental program designed to select high-performance polymeric materials for use in geothermal power plants. In field tests 12 nozzles, 27 wear plates, and 2 types of polymer lined pipe were tested. Nozzles made of Teflons TFE and PFA, Tefzel, Ryton PPS and H-Resin/carbon cloth were little changed except for some scaling. The fluorocarbons scaled least rapidly. All blade type wear plates eroded, those based on Tefzel, PPQ, and PPS the least. Fluorocarbon lined pipes were little affected by exposure. In laboratory tests samples were heated at 250 and 300/sup 0/C in brine. Several materials including fluorocarbon and unhydrolyzable aromatic or cross-linked aliphatic, thermally stable polymers survived for periods up to 1300 h. In erosion tests, coatings based on epoxy resins and a fluorocarbon were most resistant; good adhesion was required.

Proper laser infrared irradiation of ball targets 10 to 100 ..mu..m in diameter requires micrometre-step positioning of the system's optical elements. A central control console has been designed that gives the operator nearly complete control of this complex operation. Twin alignment lasers can be operated from the console. Devices can be inserted in the beam lines, mirrors moved, and the target ball aligned, all with fine precision. The focus position can be viewed by closed-circuit TV monitors; disk recording of the TV waveforms is available. The main capacitor banks can be charged for rod shots. Communications with laser operators can be maintained by intercom or radio, and video signals can be sent to remote areas. The console has been instrumental in saving many hours of manual labor.

The focus of this research has been centered on the Caltech research tokamak. Somewhat more than half of the effort during the preceding year has been devoted to bringing it into operation, familiarizing ourselves with its characteristics, and to the development of further diagnostics. Concurrently, three experimental studies, one involving the propagation of toroidal magnetosonic modes, one involving drift wave turbulence, and the other involving lower hybrid turbulence are proceeding. Each is described in some detail.

Continuing fission cross section ratio studies at Lawrence Livermore Laboratory, one has measured the /sup 232/Th//sup 235/U fission cross-section ratio from 0.7 to 30 MeV. Using the threshold method, one obtained a value of 0.1081 +- 0.0022 for the average cross-section ratio in the interval from 1.75 to 4.00 MeV.

Livermore results are reviewed and compared with recent measurements of high energy ions in the plasma focus device at other laboratories. We will also discuss diagnostic techniques for measuring high energy ions including nuclear activation, particle track detectors, solid state (silicon PIN) detectors, and neutron time-of-flight measurements.

The theory for photoacoustic-induced stress in condensed media is developed both for near-field and far-field conditions.

The distortion of the working line, due to space charge forces, is estimated. It is found that the brick wall effect may occur at 400 GeV, due to working line distortion because of electron neutralization of the beam. The smallness of the beam at 400 GeV makes it difficult to correct the working line distortion by exciting octupole correction coils.

This report presents the results of a reconnaissance geochemical survey of the Joplin quadrangle, Kansas/Missouri. Field laboratory data is provided for 736 groundwater and 714 stream sediment samples.