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Sample records for east mesa imperial

  1. Heat flow and geothermal potential of the East Mesa KGRA, Imperial Valley, California

    NASA Technical Reports Server (NTRS)

    Swanberg, C. A.

    1974-01-01

    The East Mesa KGRA (Known Geothermal Resource Area) is located in the southeast part of the Imperial Valley, California, and is roughly 150 kilometers square in areal extent. A new heat flow technique which utilizes temperature gradient measurements across best clays is presented and shown to be as accurate as conventional methods for the present study area. Utilizing the best clay gradient technique, over 70 heat flow determinations have been completed within and around the East Mesa KGRA. Background heat flow values range from 1.4 to 2.4 hfu (1 hfu = .000001 cal. per square centimeter-second) and are typical of those throughout the Basin and Range province. Heat flow values for the northwest lobe of the KGRA (Mesa anomaly) are as high as 7.9 hfu, with the highest values located near gravity and seismic noise maxima and electrical resistivity minima. An excellent correlation exists between heat flow contours and faults defined by remote sensing and microearthquake monitoring.

  2. Geothermal fluids to irrigate energy crops on Imperial East Mesa Desert, California

    SciTech Connect

    Robinson, F.E.; Thomas, T.R.; Singh, K.

    1981-10-01

    Geothermal fluid at 2200 parts per million(ppM) total dissolved solids from the East Mesa, California was compared to 1400 ppM ground water from a 100 m well as irrigation sources for Beta vulgaris (L.) USH-11 sugar beet and Tamarix aphylla (L.) athel, a biomass and windbreak tree. In 1980 there was no significant difference between the yields from the two waters. In 1981, there was no significant difference between biomass production from the waters on the athel. The geothermal water produced a larger yield of sucrose than the ground water. The data suggest that raising sugar beets with either water is feasible on the East Mesa.

  3. Preliminary results of geothermal desalting operations at the East Mesa test site Imperial Valley, California

    NASA Technical Reports Server (NTRS)

    Suemoto, S. H.; Mathias, K. E.

    1974-01-01

    The Bureau of Reclamation has erected at its Geothermal Resource Development site two experimental test vehicles for the purpose of desalting hot fluids of geothermal origin. Both plants have as a feed source geothermal well Mesa 6-1 drilled to a total depth of 8,030 feet and having a bottom hole temperature of 400 F. Formation fluid collected at the surface contained 24,800 mg/1 total dissolved solids. The dissolved solids consist mainly of sodium chloride. A multistage distillation (3-stage) plant has been operated intermittently for one year with no operational problems. Functioning at steady-state conditions with a liquid feed rate of 70 g/m and a temperature of 221 F, the final brine blowdown temperature was 169 F. Product water was produced at a rate of about 2 g/m; average total dissolved solids content of the product was 170 mg/1. A product quality of 27.5 mg/1 at a pH of 9.5 was produced from the first stage.

  4. Integrated model of the shallow and deep hydrothermal systems in the East Mesa area, Imperial Valley, California

    SciTech Connect

    Riney, T.D.; Pritchett, J.W.; Rice, L.F.

    1982-01-01

    Geological, geophysical, thermal, petrophysical and hydrological data available for the East Mesa hydrothermal system that are pertinent to the construction of a computer model of the natural flow of heat and fluid mass within the system are assembled and correlated. A conceptual model of the full system is developed and a subregion selected for quantitative modeling. By invoking the Boussinesq approximation, valid for describing the natural flow of heat and mass in a liquid hydrothermal system, it is found practical to carry computer simulations far enough in time to ensure that steady-state conditions are obtained. Initial calculations for an axisymmetric model approximating the system demonstrate that the vertical formation permeability of the deep East Mesa system must be very low (k/sub v/ approx. 0.25 to 0.5 md). Since subsurface temperature and surface heat flow data exhibit major deviations from the axisymmetric approximation, exploratory three-dimensional calculations are performed to assess the effects of various mechanisms which might operate to produce such observed asymmetries. A three-dimensional model evolves from this iterative data synthesis and computer analysis which includes a hot fluid convective source distributed along a leaky fault radiating northward from the center of the hot spot and realistic variations in the reservoir formation properties.

  5. Integrated model of the shallow and deep hydrothermal systems in the East Mesa area, Imperial Valley, California

    USGS Publications Warehouse

    Riney, T. David; Pritchett, J.W.; Rice, L.F.

    1982-01-01

    Geological, geophysical, thermal, petrophysical and hydrological data available for the East Mesa hydrothermal system that are pertinent to the construction of a computer model of the natural flow of heat and fluid mass within the system are assembled and correlated. A conceptual model of the full system is developed and a subregion selected for quantitative modeling. By invoking the .Boussinesq approximation, valid for describing the natural flow of heat and mass in a liquid hydrothermal system, it is found practical to carry computer simulations far enough in time to ensure that steady-state conditions are obtained. Initial calculations for an axisymmetric model approximating the system demonstrate that the vertical formation permeability of the deep East Mesa system must be very low (kv ~ 0.25 to 0.5 md). Since subsurface temperature and surface heat flow data exhibit major deviations from the axisymmetric approximation, exploratory three-dimensional calculations are performed to assess the effects of various mechanisms which might operate to produce such observed asymmetries. A three-dimensional model evolves from this iterative data synthesis and computer analysis which includes a hot fluid convective source distributed along a leaky fault radiating northward from the center of the hot spot and realistic variations in the reservoir formation properties.

  6. Corrosion of materials and scaling in low-salinity East Mesa geothermal brines

    SciTech Connect

    McCawley, F.X.; Cramer, S.D.; Riley, W.D.; Carter, J.P.; Needham, P.B. Jr.

    1981-01-01

    Field corrosion studies were conducted at the East Mesa Known Geothermal Resources Area (KGRA) in the Imperial Valley, Calif., to determine the optimum materials of construction for use in geothermal mineral energy resource recovery plants. These studies included characterization of geothermal environments and in situ corrosion testing. The corrosion resistance of 10 alloys exposed to 5 brine and steam process environments was evaluated using the low-salinity, high-temperature brine from geothermal well Mesa 6-1. Of these alloys, Hastelloy C-276, Hastelloy S, Inconel 625, titanium-2 nickel, and 316 L stainless steel had excellent resistance to corrosion in all of the process environments; E-Brite 26-1 and 430 stainless steel had fair resistance. Although general corrosion rates for 4130 steel and 1020 carbon steel were substantially higher than those of the other iron-base alloys, these two alloys could prove useful in low-salinity process environments because of their low cost. Aluminum alloy 5005 was the least corrosion resistant alloys and pitted severely. Scales formed on all of the alloys in every process environment. Calcite, aragonite, and an amorphous silicate were the major components of the scales.

  7. 69. The Imperial Block (8082 East Park) was built in ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    69. The Imperial Block (80-82 East Park) was built in 1900 for stores and lodgings. The ground floor has its original cast-iron storefront. The Ivanhoe Block was built in 1905 and also served as lodgings on the upper levels, above commercial space. Its storefront is covered with wood paneling. Bay windows in the upper two floors are divided by circular arches of egg-and-dart molding. - Butte Historic District, Bounded by Copper, Arizona, Mercury & Continental Streets, Butte, Silver Bow County, MT

  8. Imperial County geothermal development annual meeting: summary

    SciTech Connect

    Not Available

    1983-01-01

    All phases of current geothermal development in Imperial County are discussed and future plans for development are reviewed. Topics covered include: Heber status update, Heber binary project, direct geothermal use for high-fructose corn sweetener production, update on county planning activities, Brawley and Salton Sea facility status, status of Imperial County projects, status of South Brawley Prospect 1983, Niland geothermal energy program, recent and pending changes in federal procedures/organizations, plant indicators of geothermal fluid on East Mesa, state lands activities in Imperial County, environmental interests in Imperial County, offshore exploration, strategic metals in geothermal fluids rebuilding of East Mesa Power Plant, direct use geothermal potential for Calipatria industrial Park, the Audubon Society case, status report of the Cerro Prieto geothermal field, East Brawley Prospect, and precision gravity survey at Heber and Cerro Prieto geothermal fields. (MHR)

  9. Imperialism.

    ERIC Educational Resources Information Center

    Martz, Carlton

    2002-01-01

    This publication discusses issues related to imperialism. It examines the 1857 uprising against the British in India; examines how Hawaii became a U.S. territory at the turn of the 20th century; and reviews oil and U.S. energy policy, particularly the debate over drilling in the Arctic National Wildlife Refuge, an issue relevant to September 11,…

  10. New fusulinids from Lower Permian turbidites at Conglomerate Mesa, southeastern inyo Mountains, east-central California

    USGS Publications Warehouse

    Stevens, C.H.; Stone, P.

    2009-01-01

    Seven previously unrecognized fusulinid species from Lower Permian (Wolfcampian and Leonardian) turbidites near Conglomerate Mesa in east-central California, four of which are named as new species, are here described and figured. The four new species are Schwagerina merriami, S. wildei, Parafusulina mackevetti, and Skinnerella rossi. These fusulinid species have close affinities to similar taxa in Texas and northeastern Nevada, and they are distinct from some other faunas of slightly different age in the Conglomerate Mesa area that are dominated by endemic species and other species with Eastern Klamath Mountains affinities.

  11. A study of the mineralogy and lithology of cuttings from the U.S. Bureau of Reclamation MESA 6-2 Drillhole, Imperial County, California, including comparisons with MESA 6-1 Drillhole

    USGS Publications Warehouse

    Fournier, R.B.

    1976-01-01

    The Mesa 6-2 drillhole penetrates 6,000 feet of sediments in Imperial County, California. The cuttings material from the upper part of the drillhole is chiefly unconsolidated mud and silt. Soft siltstone fragments occur at about 1,400 feet and increase in amount down to 2,400 feet. Some pebbles are found above 2,400 feet, but the pebble-rich horizons are less distinctive than the pebble zone in the Mesa 6-1 drillhole. Below 2,400 feet, cuttings ape composed of about two-thirds siltstone and one-third sandstones, ranging from very fine to very coarse sand, plus loose Sand grains. Although below 2,400 feet there is no systematic change in color of siltstones, grain size, or cementation with depth, horizons composed predominantly of loose sand are more common at deeper levels. Fragments of igneous and metamorphic rocks are less common than in the Mesa 6-1 drillhole. Quartz, calcite, K-feldspar, plagioclase (albite), illite, and mixed layer clays are identified by X-ray diffractograms of whole-rock samples throughout the hole. Chlorite occurs in all samples from below 2,100 feet, and probably also occurs at shallower depths. In most siltstones, montmorillonite occurs only down to the interval 2,200-2,300 feet, but in the buff siltstone it is found to the bottom of the drillhole. Kaolinite occurs at least down to 4,700 feet. Dolomite is found down to at least 5,970 feet, but is generally absent from horizons composed mostly of loose sand. Pyrite occurs in many samples. No zeolites, ankerite, or amorphous sulfur were detected. Theme is no horizon that may be used fop conclusive correlation with the Mesa 6-1 drillhole.

  12. Field tests of 2- and 40-tube condensers at the East Mesa Geothermal Test Site

    SciTech Connect

    Murphy, R.W.; Domingo, N.

    1982-05-01

    Two water-cooled isobutane condensers, one with 2 tubes and one with 40 tubes, were subjected to field tests at the East Mesa Geothermal Test Site to assess relative heat transfer performance in both surface evaporator and direct-contact evaporator modes. The five groups of tests established that field performance was below earlier laboratory-determined levels and that direct-contact evaporator mode performance was poorer than that for the surface evaporator mode. In all test situations, fluted condenser tubes performed better than smooth condenser tubes. Cooling water quality had no significant effect on performance, but brine preflash in the direct-contact mode did promote some relative performance improvement. Important implications of these results for binary geothermal power plants are that (1) working-fluid-side impurities can significantly degrade heat transfer performance of the power plant condensers and (2) provisions for minimizing such impurities may be required.

  13. Land subsidence caused by the East Mesa geothermal field, California, observed using SAR interferometry

    USGS Publications Warehouse

    Massonnet, D.; Holzer, T.; Vadon, H.

    1997-01-01

    Interferometric combination of pairs of synthetic aperture radar (SAR) images acquired by the ERS-1 satellite maps the deformation field associated with the activity of the East Mesa geothermal plant, located in southern California. SAR interferometry is applied to this flat area without the need of a digital terrain model. Several combinations are used to ascertain the nature of the phenomenon. Short term interferograms reveal surface phase changes on agricultural fields similar to what had been observed previously with SEASAT radar data. Long term (2 years) interferograms allow the study of land subsidence and improve prior knowledge of the displacement field, and agree with existing, sparse levelling data. This example illustrates the power of the interferometric technique for deriving accurate industrial intelligence as well as its potential for legal action, in cases involving environmental damages. Copyright 1997 by the American Geophysical Union.

  14. New permian fusulinids from conglomerate mesa, southeastern inyo Mountains, east-central california

    USGS Publications Warehouse

    Stevens, C.H.; Stone, P.

    2009-01-01

    In the Conglomerate Mesa area in the southeastern Inyo Mountains, east-central California, a series of distinctive fusulinid assemblages ranging in age from late Artinskian to Kungurian or Roadian was developed in units 7-10 of the sedimentary rocks of Santa Rosa Flat (part of the Owens Valley Group). The fauna of unit 7 shows some eastern Klamath Mountains affinity, but most of the species in unit 7 and the lower half of unit 8 are highly endemic and comprise three new genera with 12 new species, two unusual unassigned forms, and two other new species assigned to previously described genera. New taxa include: Crenulosepta new genus with five new species, C. inyoensis, C. delicata, C. fusiformis, C. rossi, and C. wahlmani; Nigribaccinus new genus with three new species, N. giganteus, N. elegans, and N. ? nestelli; and the new genus Inyoschwagerina with four new species, I. magnified, I. elayeri, I. elongata, and I.? linderae. Cuniculinella Skinner and Wilde, 1965, is represented by one new species, C. parva, and Skinnerella Coogan, 1960 by one new species, S.? mcallisteri. Faunas from the upper half of unit 8, unit 9, and unit 10 have a strong West Texas affinity. New species from these units are Skinnerella davydovi, S. hexagona, Parafusulina cerrogordoensis, P. complexa, P. halli, P. owensensis, and P. ubehebensis. Copyright ?? 2009, The Paleontological Society.

  15. Imperial County geothermal development. Quarterly report, April 1, 1980-June 30, 1981

    SciTech Connect

    Not Available

    1981-01-01

    Three areas are reported: Geothermal Administration, Geothermal Planning; and other Geothermal Activities. Geothermal Administration addresses the status of the Imperial Valley Environmental Project (IVEP) transfer, update of the Geothermal Resource Center, and findings of Geothermal field inspections. Field inspections will cover the four new wells drilled by Magma at the Salton Sea in preparation for 28 MW power plant, the progress at Sperry at East Mesa, and the two on-line power plants in East Mesa and North Brawley. Evaluation of cooperative efforts will cover the Geothermal Subsidence Detection Network Resurvey, Master EIR for the Salton Sea and the Annual Imperial County Geothermal meeting. The status of Geothermal development throughout the County will cover existing proposed facilities. The summary of the Geothermal meeting (Appendix A) will also provide the status of several projects. Geothermal Planning addresses the EIR Notice of Exemption from CEQA, progress on the Master EIR for the Salton Sea, and the EIR for Phillips Petroleum for 6 exploratory wells in the Truckhaven area. Other Geothermal Activity addresses the Department of Energy Region IX meeting hosted by Imperial County, the Annual Imperial County Geothermal meeting, Class II-1 geothermal hazardous waste disposal siting study, and Imperial County Geothermal Direct Heat Study.

  16. Overview of Reclamation's geothermal program in Imperial Valley, California

    NASA Technical Reports Server (NTRS)

    Fulcher, M. K.

    1974-01-01

    The Bureau of Reclamation is presently involved in a unique Geothermal Resource Development Program in Imperial Valley, California. The main purpose of the investigations is to determine the feasibility of providing a source of fresh water through desalting geothermal fluids stored in the aquifers underlying the valley. Significant progress in this research and development stage to date includes extensive geophysical investigations and the drilling of five geothermal wells on the Mesa anomaly. Four of the wells are for production and monitoring the anomaly, and one will be used for reinjection of waste brines from the desalting units. Two desalting units, a multistage flash unit and a vertical tube evaporator unit, have been erected at the East Mesa test site. The units have been operated on shakedown and continuous runs and have produced substantial quantities of high-quality water.

  17. Performance evaluation of Magma Power Company's reinjection well No. 46-7 at the East Mesa KGRA, California

    SciTech Connect

    Jorda, R.M.

    1980-02-01

    The performance of the Magma Power Company's reinjection well No. 46-7 at East Mesa has been examined. Water was cooled to 100/sup 0/F(+-) to simulate total heat extraction and then tested using membrane filter flow procedures. The cooled water contains particles which are in the high colloid size range, and formation impairment by these particles is unlikely. There is evidence that acid soluble corrosion products and calcium compounds constitute about two thirds of the particulates, and that the acid insoluble residue contains precipitated silica, insoluble corrosion products, and possibly formation fines carried in the produced water. Under stabilized conditions, the suspended solids content of the water is less than 2 parts per million. However, during the frequent production well start ups, a higher concentration of suspended solids is carried in the produced water and into the injection well, conceivably augmenting fill in the injector. But most likely, fill occurs when the injection well surges during shut-downs, because of inadequate sand control in the well completion. At the time of the test, the injection well was found to be severely impaired. Back flowing the well restored the injectivity to a calculated maximum sub-frac injection capacity of about 60,000 b/d of water at T = 350/sup 0/F, which corresponds to a calculated maximum hypofrac injection capacity of about 20,000 b/d of cold water (T = 100/sup 0/F).

  18. Surface Deformation in Imperial Valley, Southern California

    NASA Astrophysics Data System (ADS)

    Eneva, M.; Adams, D.; Falorni, G.; Morgan, J.

    2013-12-01

    The Imperial Valley in southern California is subjected to significant tectonic deformation resulting from the relative movement of the North American and Pacific plates. It is characterized by large earthquakes, frequent swarm activity, and aseismic events. High heat flow makes possible the operation of geothermal fields, some of which cause man-made surface displacements superimposed on the tectonic deformation. We apply radar interferometry (InSAR) to analyze Envisat ASAR data for the period 2003-2010. The SqueeSAR technique is used to obtain deformation time series and annual rates at numerous locations of permanent and distributed scatterers (PS and DS). SqueeSAR works very well in agricultural areas, where conventional differential InSAR (DinSAR) fails. We observe differential movements marking the Superstition Hills, San Andreas, and Imperial faults. The Imperial fault traverses agricultural fields, where DInSAR does not work and thus our SqueeSAR observations are the first for this fault (Fig. 1). We also observe steps in the deformation time series around the Superstition Hills fault from an October 2006 aseismic event and the April 2010 M7.2 earthquake south of the U.S.-Mexico border. Significant annual deformation rates are detected in the current geothermal fields. For example, subsidence of up to -50 mm/year is seen at the Salton Sea field (Fig. 2), and both subsidence and uplift are seen at Heber. We also determine the deformation baseline at prospective geothermal fields, thus making it possible in the future to distinguish between man-made and tectonic causes of surface deformation. Fig. 1. Line-of-sight (LOS) deformation indicates differential displacement on both sides of Imperial Fault. Movements away from the satellite are shown in yellow to red, and towards the satellite in blue. Larger deformation is associated with two geothermal fields, Heber (to the south-west) and East Mesa (to the east). Fig. 2. Subsidence in the Salton Sea geothermal

  19. 23. VIEW OF HORSE MESA DAM, SHOWING SPILLWAY DISCHARGE TUNNEL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. VIEW OF HORSE MESA DAM, SHOWING SPILLWAY DISCHARGE TUNNEL AT LEFT, RIGHT (OR NORTH) SPILLWAY, HEFU POWER UNIT, AND ORIGINAL POWER PLANT - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  20. 24. CLOSEUP VIEW OF HORSE MESA DAM. HEFU PENSTOCK IS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. CLOSE-UP VIEW OF HORSE MESA DAM. HEFU PENSTOCK IS AT CENTER RIGHT, AND LEFT (OR SOUTH) SPILLWAY CHUTE IS AT UPPER RIGHT - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  1. 6. VIEW OF UPSTREAM FACE OF HORSE MESA, SHOWING CONCRETE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW OF UPSTREAM FACE OF HORSE MESA, SHOWING CONCRETE BEING PLACED. PENSTOCK OPENINGS ARE VISIBLE AT CENTER LEFT. August 24, 1926 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  2. 22. VIEW SHOWING THE COMPLETED HORSE MESA DAM, EXCEPT FOR ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. VIEW SHOWING THE COMPLETED HORSE MESA DAM, EXCEPT FOR TRANSFORMER EQUIPMENT BEING INSTALLED ABOVE THE POWER PLANT 1927 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  3. 36. CROSS SECTIONAL VIEW OF ORIGINAL HORSE MESA DAM POWER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    36. CROSS SECTIONAL VIEW OF ORIGINAL HORSE MESA DAM POWER PLANT, LOOKING NORTH. ONLY TWO OF THE THREE UNITS ARE VISIBLE - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  4. 20. CROSS SECTIONAL VIEW OF HORSE MESA, SHOWING RIGHT SPILLWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. CROSS SECTIONAL VIEW OF HORSE MESA, SHOWING RIGHT SPILLWAY SUPERSTRUCTURE AND CONCRETE PLACEMENT LINES August 2, 1927 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  5. Mesa = Table

    NASA Technical Reports Server (NTRS)

    2006-01-01

    10 August 2006 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows two mesas on the northern plains of Mars. 'Mesa' is the Spanish word for 'table,' and that is a very good description of the two elliptical features captured in this MOC image. In both cases, the mesa tops and the material beneath them, down to the level of the surrounding, rugged plain, are remnants of a once more extensive layer (or layers) of material that has been largely eroded away. The circular feature near the center of the larger mesa is the site of a filled and buried impact crater.

    Location near: 53.5oN, 153.5oW Image width: 3 km (1.9 mi) Illumination from: lower left Season: Northern Spring

  6. Feasibility study report for the Imperial Valley Ethanol Refinery: a 14. 9-million-gallon-per-year ethanol synfuel refinery utilizing geothermal energy

    SciTech Connect

    Not Available

    1981-03-01

    The construction and operation of a 14,980,000 gallon per year fuel ethanol from grain refinery in the Imperial Valley of California is proposed. The Imperial Valley Ethanol Refinery (refinery) will use hot geothermal fluid from geothermal resources at the East Mesa area as the source of process energy. In order to evaluate the economic viability of the proposed Project, exhaustive engineering, cost analysis, and financial studies have been undertaken. This report presents the results of feasibility studies undertaken in geothermal resource, engineering, marketing financing, management, environment, and permits and approvals. The conclusion of these studies is that the Project is economically viable. US Alcohol Fuels is proceeding with its plans to construct and operate the Refinery.

  7. Aquaculture in the Imperial Valley -- A geothermal success story

    SciTech Connect

    Rafferty, K.

    1999-03-01

    The Salton Sea and Imperial Valley area of southern California has long been recognized as a hot spot of geothermal development. In the geothermal industry, this area has for some time been synonymous with electric power generation projects. Starting with the first plant in East Mesa in 1979, geothermal power has increased over the years to the present 400+ MW of installed capacity in the three primary areas of Salton Sea, Heber and East Mesa. Although most in the industry are aware of the millions of kilowatt-hours annually produced in this desert oasis of development, they remain surprisingly uninformed about the Valley`s other geothermal industry -- aquaculture. At present, there are approximately 15 fish farming (or aquaculture) operations clustered, for the most part, around the Salton Sea. All of these farms use geothermal fluids to control the temperature of the fish culture facilities so as to produce larger fish in a shorter period of time and to permit winter production which would otherwise not be possible. In aggregate, these farms produce on the order of 10,000,000 lbs of fish per year most of which is sold into the California market. Principle species are catfish, striped bass and tilapia. For the past several years, tilapia has been the fastest growing part of the aquaculture industry. In 1996, the total US consumption of tilapia was 62,000 lbs. Of this, only 16,000,000 lbs (26%) was domestically produced and the balance imported. The primary market for the fish on the West Coast is among the Asian-American populations in the major cities. Fish are shipped and sold liver at the retail level.

  8. 49. HORSE MESA DAM, AUXILIARY SPILLWAY, 40.0' x 44.5' REGULATING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    49. HORSE MESA DAM, AUXILIARY SPILLWAY, 40.0' x 44.5' REGULATING GATE HOIST. INSTALLATION ASSEMBLY February 3, 1937 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  9. 14. VIEW SHOWING UPSTREAM FACE OF HORSE MESA. TRACK FROM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. VIEW SHOWING UPSTREAM FACE OF HORSE MESA. TRACK FROM AGGREGATE BARGES TO MIXING PLANT IS AT LOWER LEFT, RIGHT SPILLWAY CHUTE IS TAKING FORM AT UPPER RIGHT April 29, 1927 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  10. 5. VIEW SHOWING HORSE MESA DAM UNDER CONSTRUCTION. THREE PENSTOCKS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW SHOWING HORSE MESA DAM UNDER CONSTRUCTION. THREE PENSTOCKS ARE AT CENTER AND CONCRETE TOWER LINES. AGGREGATE OPERATION IS VISIBLE ABOVE CONSTRUCTION SITE July 22, 1926 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  11. Liquefaction sites, Imperial Valley, California.

    USGS Publications Warehouse

    Youd, T.L.; Bennett, M.J.

    1983-01-01

    Sands that did and did not liquefy at two sites during the 1979 Imperial Valley, Calif., earthquake (ML = 6.6) are identified and their properties evaluated. SPT tests were used to evaluate liquefaction susceptibility. Loose fine sands in an abandoned channel liquefied and produced sand boils, ground fissures, and a lateral spread at the Heber Road sites. Evidence of liquefaction was not observed over moderately dense over-bank sand east of the channel nor over dense point-bar sand to the west. -from ASCE Publications Information

  12. Mesa Verde Archaeoastronomy

    NASA Astrophysics Data System (ADS)

    Munson, Gregory E.

    Mesa Verde archaeoastronomy has been studied for over 100 years through academic research. Investigators have excavated, stabilized, and documented the major dwellings in Mesa Verde National Park. Evidence for astronomical orientation and alignment was found in Cliff Palace and Sun Temple. The level of documentation increased with each new research project. With good documentation practices, together, the research has shown that the cultures of the Mesa Verde were advanced in their social organization and use of astronomy. Consultation with Native American tribal leaders will add significant background to the depth of knowledge that their ancestors possessed.

  13. Hydrothermal alteration and tectonic setting of intrusive rocks from East Brawley, Imperial Valley: an application of petrology to geothermal reservoir analysis

    SciTech Connect

    Keskinen, M.; Sternfeld, J.

    1982-01-01

    A geothermal well near East Brawley intersected a series of thin (3 to 35m) diabasic to dioritic intrusives. The petrology and chemistry of these meta-igneous rocks can provide insight into the thermal and fluid chemical characteristics of the reservoir and into the processes of magma generation at depth. A description of the rock types and their hydrothermal alteration is presented in order to increase the petrologic data base relating to this important facet of the geothermal potential of the Salton Trough and to provide a case study illustrating how detailed petrologic examination of well cuttings can provide important input in the construction of a geothermal reservoir model.

  14. Small Martian Mesa

    NASA Technical Reports Server (NTRS)

    2003-01-01

    MGS MOC Release No. MOC2-381, 4 June 2003

    This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image was acquired during the first week of June 2003. It shows a small mesa surrounded by a plain of dust-mantled dunes and ripples near 5.9oS, 202.8oW. Large, house-sized boulders have tumbled down the mesa slopes. This one of the highest resolution images from Mars, each pixel covers an area of 1.5 meters (5 feet) across. Sunlight illuminates the scene from the left.

  15. Mesas on Depression Floor

    NASA Technical Reports Server (NTRS)

    2004-01-01

    3 August 2004 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows mesas and buttes on the floor of a depression in the Labyrinthus Noctis region of Mars. This is part of the western Valles Marineris. Each mesa is a remnant of a formerly more extensive sequence of rock. The image is located near 7.0oS, 99.2oW. It covers an area about 3 km (1.9 mi) across; sunlight illuminates the scene from the lower left.

  16. Culture and Imperialism.

    ERIC Educational Resources Information Center

    Said, Edward W.

    Growing out of a series of lectures given at universities in the United States, Canada, and England, this book reopens the dialogue between literature and the life of its time. It draws dramatic connections between the imperial endeavor and the culture that both reflected and reinforced it, describing a general pattern of relationships between the…

  17. Post-Silent Canyon caldera structural setting for Pahute Mesa

    SciTech Connect

    Warren, R.G.; Byers, F.M. Jr.; Orkild, P.P.

    1985-12-31

    At Pahute Mesa, Nevada Test Site, the Silent Canyon caldera of about 14 Ma age is almost completely concealed beneath ash-flow tuffs of the 11.5 Ma old Rainier Mesa Member of the Timber Mountain Tuff. Structures unequivocally related to the caldera are not observed in the Rainier Mesa Member. Structure contours on top of Rainier Mesa Member at Pahute Mesa define a series of elongate, fault-bounded blocks. Between the East Boxcar and Almendro Faults these blocks tilt eastward away from westward-dipping normal faults and elsewhere they also have a strong northward component of dip, away from Timber Mountain caldera. Episodic movement along these faults controlled thicknesses of members of Paintbrush Tuff (13.3 - 12.7 Ma) and tuffs and lavas of Area 20 (14 - 13.3 Ma), which have steeper eastward and northward components of dip than the overlying Rainier Mesa Member and also thicken eastward within each structural block. Fault blocks north of Timber Mountain caldera on Pahute Mesa are very similar to blocks described at Yucca mountain south of the caldera, and probably were generated by regional Basin and Range extension and four episodes of caldera-forming volcanism at Timber Mountain. Faults bounding these blocks on Pahute Mesa formed during early episodes of caldera-forming volcanism at Timber Mountain and reactivated during later episodes, so that fault displacements and bedding plane attitudes increase with age. Because these faults have episodic activity, even a relatively small post-Rainier Mesa displacement may define the location of important displacement within underlying units.

  18. Final Scientific / Technical Report, Geothermal Resource Exploration Program, Truckhaven Area, Imperial County, California

    SciTech Connect

    Layman Energy Associates, Inc.

    2006-08-15

    With financial support from the U.S. Department of Energy (DOE), Layman Energy Associates, Inc. (LEA) has completed a program of geothermal exploration at the Truckhaven area in Imperial County, California. The exploratory work conducted by LEA included the following activities: compilation of public domain resource data (wells, seismic data, geologic maps); detailed field geologic mapping at the project site; acquisition and interpretation of remote sensing imagery such as aerial and satellite photographs; acquisition, quality control and interpretation of gravity data; and acquisition, quality control and interpretation of resistivity data using state of the art magnetotelluric (MT) methods. The results of this exploratory program have allowed LEA to develop a structural and hydrologic interpretation of the Truckhaven geothermal resource which can be used to guide subsequent exploratory drilling and resource development. Of primary significance, is the identification of an 8 kilometer-long, WNW-trending zone of low resistivity associated with geothermal activity in nearby wells. The long axis of this low resistivity zone is inferred to mark a zone of faulting which likely provides the primary control on the distribution of geothermal resources in the Truckhaven area. Abundant cross-faults cutting the main WNW-trending zone in its western half may indicate elevated fracture permeability in this region, possibly associated with thermal upwelling and higher resource temperatures. Regional groundwater flow is inferred to push thermal fluids from west to east along the trend of the main low resistivity zone, with resource temperatures likely declining from west to east away from the inferred upwelling zone. Resistivity mapping and well data have also shown that within the WNW-trending low resistivity zone, the thickness of the Plio-Pleistocene sedimentary section above granite basement ranges from 1,900–2,600 meters. Well data indicates the lower part of this

  19. Language Teaching=Linguistic Imperialism?

    ERIC Educational Resources Information Center

    Muhlhausler, Peter

    1994-01-01

    Linguistic imperialism is the expansion of a small number of privileged languages at the cost of a large number of others. The language teaching profession needs to address the ecological impact of language teaching and focus on the well-being of the inhabitants of a language ecology rather than on the economic benefits of the teaching…

  20. ["Imperial madness" - truth or legend?].

    PubMed

    V Zerssen, D

    2011-03-01

    The notion of "imperial madness" was coined in the historical literature and belles-lettres of the 19th century. Around that time up to the first quarter of the 20th century, it was adopted by a few German psychiatrists. Two of them viewed "imperial madness" as ordinary forms of insanity which became excessive only due to reactions of the social environment. Another one, however, classified it as one of "mental borderland states" in between insanity and normality, although he conceived the final stage of the disorder as a paranoid one. In agreement with the historians he postulated that "imperial madness" resulted from unlimited power of predisposed rulers. In recent times the whole concept of "imperial madness" was referred to the realm of legends by historians of antiquity and other historically interested authors. Yet the existence of the phenomenon cannot be denied. Despite its rarity it has played and is still playing an important role with often catastrophic consequences in various cultures all over the world. Therefore, psychiatrists and other physicians as well as clinical psychologists should be acquainted with it. From a modern point of view, it is not a paranoid disorder but rather a syndrome of addiction-like behavioural excesses representing an intensification of a Hybris syndrome as described by Anglo-Saxon psychiatrists. According to the present authors' view, it should be classified nosologically as a chronic adjustment disorder. In this case, the underlying stresses need to be extended to situations of temptation (here: the temptation to abuse almost unlimited power).

  1. Career Education at Mesa Verde

    ERIC Educational Resources Information Center

    Triplett, Napoleon B.

    1974-01-01

    A national pilot school for career education, Mesa Verde High School, Sacramento, subscribes to the philosophy that every student will be provided an abundance of career choices at all times whether he is vocationally, technically, or academically bound. A variety of work opportunities on the campus makes the program possible. (AG)

  2. Red Sky with Red Mesa

    ScienceCinema

    None

    2016-07-12

    The Red Sky/Red Mesa supercomputing platform dramatically reduces the time required to simulate complex fuel models, from 4-6 months to just 4 weeks, allowing researchers to accelerate the pace at which they can address these complex problems. Its speed also reduces the need for laboratory and field testing, allowing for energy reduction far beyond data center walls.

  3. Red Sky with Red Mesa

    SciTech Connect

    2011-04-14

    The Red Sky/Red Mesa supercomputing platform dramatically reduces the time required to simulate complex fuel models, from 4-6 months to just 4 weeks, allowing researchers to accelerate the pace at which they can address these complex problems. Its speed also reduces the need for laboratory and field testing, allowing for energy reduction far beyond data center walls.

  4. Carnotite resources of the Calamity group area, Mesa County, Colorado

    USGS Publications Warehouse

    Stager, Harold K.

    1951-01-01

    The Calamity group area, which includes 28 unpatented Government claims and enclosed fractions of public domain, lies along the east rim of Calamity Mesa, Mesa County, Colo.  From 1915 through 1944, about 10,000 tons of carnotite ore, averaging about 1.0 percent U3O8 and 2.5 percent V2O5, was produced from mines in this group (tons in this report are short tons).  Production from this area from August 1949 to January 1, 1951, totaled 8,100 tons of ore with an average grade of 0.36 percent U3O8 and 1.66 percent V2O5, containing about 58,600 pounds of U3O8 and 268,000 pounds of V2O5.

  5. Abdus Salam at Imperial College

    NASA Astrophysics Data System (ADS)

    Kibble, Tom

    2008-07-01

    It is a privilege, as well as a great pleasure, for me to talk about Abdus Salam at Imperial College. He is someone to whom I owe a great personal debt. I have always felt that I was very fortunate to have found myself joining his group in 1959, less than three years after he first set it up. It was a very exciting place to be, and a very exciting time in theoretical physics.

  6. Between universalism and regionalism: universal systematics from imperial Japan.

    PubMed

    Lee, Jung

    2015-12-01

    Historiographic discussions of the universality and regionality of science have to date focused on European cases for making regional science universal. This paper presents a new perspective by moving beyond European origins and illuminating a non-European scientist's engagement with the universality and regionality of science. It will examine the case of the Japanese botanist Nakai Takenoshin (1882-1952), an internationally recognized authority on Korean flora based at Tokyo Imperial University. Serving on the International Committee on Botanical Nomenclature in 1926, Nakai endorsed and acted upon European claims of universal science, whilst simultaneously unsettling them with his regionally shaped systematics. Eventually he came to promote his own systematics, built regionally on Korean flora, as the new universal. By analysing his shifting claims in relation to those of other European and non-European botanists, this paper makes two arguments. First, universalism and regionalism were not contradictory foundations of scientific practice but useful tools used by this non-European botanist in maintaining his scientific authority as a representative Japanese systematist. Second, his claims to universality and regionalism were both imperially charged. An imperially monopolized study of Korean plants left a regional imprint on Nakai's systematics. In order to maintain his scientific authority beyond its region of origin he had to assert either the expanding regionalism of 'East Asia' or universalism.

  7. Initial characterization of the groundwater system near the Lower Colorado Water Supply Project, Imperial Valley, California

    USGS Publications Warehouse

    Coes, Alissa L.; Land, Michael; Densmore, Jill N.; Landrum, Michael T.; Beisner, Kimberly R.; Kennedy, Jeffrey R.; Macy, Jamie P.; Tillman, Fred D

    2015-01-01

    Groundwater at a distance from the All-American Canal, in the East Mesa, Algodones Dunes, Pilot Knob Mesa, and Cargo Muchacho Mountains piedmont, was found to have higher total dissolved solids concentrations (generally greater than 1,000 milligrams per liter) than recently recharged groundwater near the All-American Canal. Time-domain electromagnetic data indicated that low-salinity groundwater was present down to about 377 feet below land surface near the All-American Canal; groundwater salinity at depth increased with distance north from the All-American Canal. Groundwater several miles or more from the canal also did not co

  8. ARNOLD MESA ROADLESS AREA, ARIZONA.

    USGS Publications Warehouse

    Wolfe, Edward W.; McColly, Robert A.

    1984-01-01

    Geologic geochemical, and aeromagnetic investigations and a survey of mines and prospects in the Arnold Mesa Roadless Area, Arizona, provide little evidence for the occurrence of mineral or energy resources. Buried Proterozoic basement rocks are possible hosts of porphyry-type copper and massive sulfide deposits but the thick cover of Paleozoic sedimentary rocks and upper Cenozoic volcanic rocks precluded assessment of this possibility. Chemistry and temperature of spring and well waters suggest that a geothermal resource may exist near the eastern margin of the roadless area, but the anomaly has not been tested by drilling and this resource remains unverified. No other energy resources were identified.

  9. Powerhouse east, north and west elevations and operating machinery, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Powerhouse - east, north and west elevations and operating machinery, battery storage building, and typical span of steel service bridge - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  10. Overview from bluff east of facility. Note buildings #35 (left). ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Overview from bluff east of facility. Note buildings #35 (left). #33 (center), and #31 A (right) VIEW WEST - Department of Energy, Grand Junction Office, 2597 B3/4 Road, Grand Junction, Mesa County, CO

  11. Contextual view of building 84 showing east and north elevations; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Contextual view of building 84 showing east and north elevations; camera facing southwest. - Mare Island Naval Shipyard, Marine Prison, Suisun Avenue, west side between Mesa Road & San Pablo, Vallejo, Solano County, CA

  12. Detail of windows on first floor east elevation of north ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of windows on first floor east elevation of north wing; camera facing west. - Mare Island Naval Shipyard, Marine Prison, Suisun Avenue, west side between Mesa Road & San Pablo, Vallejo, Solano County, CA

  13. [Kyongsong Imperial University Medical College].

    PubMed

    Kee, C D

    1992-01-01

    Japan annexed Korea in 1910 and with the promulgation of the Chosen Kyoyuk Ryong (the Korea Education Decree) in 1911, it began to conduct education for the Korean people. However, this was only a matter of formality and a policy for liquidating the spirit of the Korean people. It finally resulted in the uprising of March 1, 1919 of the Korean people that has a cultural tradition of a high level. This event served as a cause of widely spread censure among the Korean people as well as the people of the whole world. Even in Japan voice of criticism rose high. Such being the situation, Japan amended the Korean educational law under the pretext of shifting to a so-called civil-rule policy. The Japanese authorities adopted the same educational system as was practiced in Japan proper, for primary and middle school education. As for higher education, they placed under a strict control the educational facilities already established by Korean people and foreign missionaries, suppressing even minor expansions of existing facilities. However, the movement by some Korean educators to establish a private university and efforts by some missionaries to integrate the existing educational organizations into a university made it inevitable for the Japanese authorities to set up a university of their own in Korea. Thus, they hurriedly established the Kyonsong Imperial University in which was included a medical college that was an indispensable organization for colonial education. They professed that the medical college was established for the purpose of providing equal opportunities and privileges to Korean and Japanese students, but, on the contrary, the operation of the college was done strictly under their colonial policy. The system of the Kyongsong Imperial University was enforced acording to the Japanese Imperial University Law, and all the faculty members and the administratial officials were Japanese. As for Koreans, a few graduates of the university was named nonpaid deputy

  14. Injector linac for the MESA facility

    SciTech Connect

    Heine, R.

    2013-11-07

    In this paper we present several possible configurations of an injector linac for the upcoming Mainz Energy-recovering Superconducting Accelerator (MESA) [1] and discuss their suitability for the project.

  15. Geology of the Calamity Mesa quadrangle, Mesa county, Colorado

    USGS Publications Warehouse

    Cater, Fred W.; Stager, Harold K.

    1953-01-01

    The Calamity Mesa quadrangle is one of eighteen 7 1/2-minute quadrangles covering the principal carnotite-producing area of southwestern Colorado. The geology of these quadrangles was mapped by the U.S. Geological Survey for the Atomic Energy Commission as part of a comprehensive study of carnotite deposits. The rocks exposed in the eighteen quadrangles consist of crystalline rocks of pre-Cambrian age and sedimentary rocks the range in age from late Paleozoic to Quaternary. Over much of the area the sedimentary rocks are flat lying, but in places the rocks are disrupted by high-angle faults, and northwest-trending folds. Conspicuous among the folds are large anticlines having cores of intrusive salt and gypsum. Most of the carnotite deposits are confined to the Salt Wash sandstone member of the Jurassic Morrison formation. Within this sandstone, most of the deposits are spottily distributed through an arcuate zone known as the "Uravan Mineral Belt". Individual deposits range in size from irregular masses containing only a few tons of ore to large tabular masses containing many thousands of tons. The ore consists largely of sandstone selectively impregnated and in part replaced by uranium and vanadium minerals. Most of the deposits appear to be related to certain sedimentary structures in sandstones of favorable composition.

  16. Pliocene Invertebrates From the Travertine Point Outcrop of the Imperial Formation, Imperial County, California

    USGS Publications Warehouse

    Powell, Charles L.

    2008-01-01

    Forty-four invertebrate taxa, including one coral, 40 mollusks (30 bivalves and 10 gastropods), and three echinoids are recognized from a thin marine interval of the Imperial Formation near Travertine Point, Imperial County, California. The Travertine Point outcrop lies about midway between exposures of the Imperial Formation around Palm Springs, Riverside County, and exposures centered at Coyote Mountain in Imperial and San Diego Counties. Based on faunal comparisons, the Travertine Point outcrop corresponds to the Imperial and San Diego outcrops. The Travertine Point fauna is inferred to have lived in subtropical to tropical waters at littoral to inner sublittorial (<50 m) water depths. Coral and molluscan species from the Travertine Point outcrop indicate a Pliocene age. Two extant bivalve mollusks present have not previously been reported as fossils Anadara reinharti and forms questionably referred to Dosinia semiobliterata.

  17. Imperialism and the English Language in Hong Kong.

    ERIC Educational Resources Information Center

    Boyle, Joseph

    1997-01-01

    Considers whether the charge of linguistic imperialism can be appropriately leveled against the British government during its colonial rule of Hong Kong. The article analyzes the concept of linguistic imperialism, considers landmarks in the history of the English language in Hong Kong, and applies the concept of linguistic imperialism to the…

  18. Perspectives for Dark Photon physics at MESA

    NASA Astrophysics Data System (ADS)

    Denig, Achim

    2015-04-01

    At the Institute of Nuclear Physics in Mainz the new high-intensity electron accelerator MESA (Mainz Energy-Recovering Superconducting Accelerator) is currently being constructed. We report on opportunities regarding Dark Photon physics at this facility. The intensive MESA beam of 155 MeV and 1 mA of beam current in combination with an internal gas target offers a unique and clean environment for electron scattering experiments. We also report on the status of the MAGIX dual-arm spectrometer setup, which can be used for those measurements. Furthermore, we also comment on opportunities for a beam dump experiment at MESA, which would search for dark matter particles directly. This work is supported by DFG through Collaborative Research Center CRC-1044.

  19. 9. Tempe Canal, Section 17 (TIN, R5E), looking east towards ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. Tempe Canal, Section 17 (TIN, R5E), looking east towards the mesa. This is the oldest part of the canal still in use. Photographer: Mark Durben, June 1989. Source: SRPA - Tempe Canal, South Side Salt River in Tempe, Mesa & Phoenix, Tempe, Maricopa County, AZ

  20. Capability Development at Imperial Oil Resources Ltd.

    ERIC Educational Resources Information Center

    Ellerington, David; And Others

    1992-01-01

    Striving to be learning organization, Imperial Oil of Canada focused on organizational, divisional, and individual capability development. Lessons learned include the following: (1) all levels of employees are potential professionals; (2) learning must be continuous; (3) intrinsic motivation and commitment are essential; and (4) organizational…

  1. "Economics Imperialism", Education Policy and Educational Theory

    ERIC Educational Resources Information Center

    Allais, Stephanie

    2012-01-01

    This paper examines how economics imperialism (the increasing colonization of other disciplines by neoclassical economics) has affected contemporary education policies. I suggest that an increasing preoccupation with education meeting the needs of the economy, together with the prevalence of economic concepts outside of economics, have contributed…

  2. Rehabilitation of the Imperial Examination System

    ERIC Educational Resources Information Center

    Haifeng, Liu

    2006-01-01

    Since the abolishment of the imperial examination system (the IES) in 1905, the system has been the target of severe criticism by most Chinese people. This paper is intended to clear up the misunderstanding of the IES in seven respects based on some ideas of rehabilitation of the IES over the past 100 years. In the author's opinion, the IES is…

  3. Imperialism: An ERIC/ChESS Sample.

    ERIC Educational Resources Information Center

    Paris, Matthew

    1998-01-01

    Presents an annotated bibliography of Educational Resources Information Center (ERIC) resources related to imperialism and the Spanish-American War. Materials selected include books, academic journals, theme issues, videos, workbooks, and curriculum guides. Includes information on locating, ordering, and reproducing these resources. (MJP)

  4. Realities and Myths of Linguistic Imperialism.

    ERIC Educational Resources Information Center

    Phillipson, Robert

    1997-01-01

    Responds to Alan Davies's review article "Ironising the Myth of Linguicism," summarizing principles for the analysis of linguistic imperialism and demonstrating that the phenomenon is far from mythical. The article responds to some of the points raised by Davies to show that his generalizations are not justified. (41 references) (Author/CK)

  5. Linguistic Imperialism, Cultural Integrity, and EIL.

    ERIC Educational Resources Information Center

    Modiano, Marko

    2001-01-01

    Argues that while linguistic imperialism is real and needs to be addressed, one way for the language instructor to come to terms with the cultural imposition of English language teaching is to define English as an international language. Suggests promoting "prestige varieties" positions the practitioner as purveyor of Anglo-American hegemony and…

  6. Language Science and Orientalism in Imperial Germany

    ERIC Educational Resources Information Center

    Kaplan, Judith R. H.

    2012-01-01

    This dissertation addresses a significant gap in the historiography of science: the nature of the language sciences as "science." Focusing on disciplinary and intellectual developments in the context of Imperial Germany (1871-1918), the project anticipates, complicates, and helps to explain a widely recognized theoretical shift, namely,…

  7. The Linguistic Imperialism of Neoliberal Empire

    ERIC Educational Resources Information Center

    Phillipson, Robert

    2008-01-01

    The article explores the transition from the linguistic imperialism of the colonial and postcolonial ages to the increasingly dominant role of English as a neoimperial language. It analyzes "global" English as a key dimension of the U.S. empire. U.S. expansionism is a fundamental principle of the foreign policy of the United States that can be…

  8. Syllabus for Use in Imperial Chinese History.

    ERIC Educational Resources Information Center

    Husum, Carol

    This syllabus is for a one semester course in the history of Imperial China, a study of the development of the world's oldest civilization still in existence. Emphasis is placed upon the cultural as well as the political and economic development of China until 1644. Major topics in the course outline are: 1) The Origins and Geography of China; 2)…

  9. Syllabus for Use in Imperial Russian History.

    ERIC Educational Resources Information Center

    Husum, Carol

    This syllabus is an outline of a one semester course in Imperial Russia designed to emphasize the relationship between Russia's past and her present. Course content begins with the founding of the first Russian state and continues to the fall of the Romanovs in 1917. In addition, some topics are suggested for investigation of Russian history in…

  10. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... County, California, and is entirely within the Lodi viticultural area (27 CFR 9.107). The Alta Mesa... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5) Proceed northeast 2.6 miles on Dillard Road to its intersection with Lee Shorthorn Road, T7N, R7E...

  11. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... County, California, and is entirely within the Lodi viticultural area (27 CFR 9.107). The Alta Mesa... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5) Proceed northeast 2.6 miles on Dillard Road to its intersection with Lee Shorthorn Road, T7N, R7E...

  12. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... County, California, and is entirely within the Lodi viticultural area (27 CFR 9.107). The Alta Mesa... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5) Proceed northeast 2.6 miles on Dillard Road to its intersection with Lee Shorthorn Road, T7N, R7E...

  13. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... County, California, and is entirely within the Lodi viticultural area (27 CFR 9.107). The Alta Mesa... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5) Proceed northeast 2.6 miles on Dillard Road to its intersection with Lee Shorthorn Road, T7N, R7E...

  14. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... County, California, and is entirely within the Lodi viticultural area (27 CFR 9.107). The Alta Mesa... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5) Proceed northeast 2.6 miles on Dillard Road to its intersection with Lee Shorthorn Road, T7N, R7E...

  15. Career Spanish at Mesa State College.

    ERIC Educational Resources Information Center

    Pilkenton, David

    The development and results of Career Spanish instruction at Mesa State College in Colorado from 1975 to 1991 are described. The class is an individualized, career-oriented class for students who have only 3 to 6 semester hours available for foreign language study and an interest in particular vocational applications of Spanish. With no…

  16. 13. VIEW OF WESTERN CANAL EAST OF CARRIAGE LANE IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. VIEW OF WESTERN CANAL EAST OF CARRIAGE LANE IN TEMPE, SHOWING DROP STRUCTURE AND GROUNDWATER PUMP. THIS IS THE LAST OF FOUR PUMPS WHICH FEED DIRECTLY INTO THE CANAL BETWEEN ALMA SCHOOL ROAD AND PRICE ROAD. ON THIS DAY, ALL FOUR PUMPS, OPERATING AT FULL OUTPUT, HAVE CONSIDERABLY SWELLED THE FLOW TO THE CANAL. NOTE THE OLD FASHIONED BRICKWORK ON THE NORTH BANK. - Western Canal, South side of Salt River between Tempe, Phoenix & Mesa, Mesa, Maricopa County, AZ

  17. Imperial County geothermal development. Summary report, 1979-1982

    SciTech Connect

    Not Available

    1982-10-01

    The progress of geothermal development during the past three years, county activities in support of geothermal development, and current challenges and future needs of the geothermal industry and the county are summarized. Exploration activities have resulted in the identification and definition of three additional Known Geothermal Resource Areas (KGRAs) during the grant period: the Westmorland KGRA, the East Brawley KGRA, both in 1980, and the South Brawley KGRA in 1982. Exploration is continuing in other areas of the county as well. Three 10 megawatt power plants have begun operations during the grant period: the Magma East Mesa 10 Megawatt Binary Power Plant, the Union/Southern California Edison 10 Megawatt Flash Power Plant in Brawley, both beginning operations in 1980, and the Union/Southern California Edison 10 Megawatt Flash Power Plant at the Salton Sea, initiating operations in 1982. Three commercial power plants are scheduled to begin construction during late 1982 or early 1983. Groundbreaking for the Heber Binary Project is scheduled for November 1982. Site work has already begun for the Heber Flash Power Plant. The Magma 28 megawatt power plant at the Salton Sea is to begin construction in early 1983. Two commercial power plants are in planning stages. (MHR)

  18. Shallow velocity structure in the Imperial Valley region of Southern California

    NASA Astrophysics Data System (ADS)

    Ma, Y.; Stock, J. M.; Hole, J. A.; Fuis, G. S.

    2013-12-01

    high velocity region southeast of the 2012 Brawley swarms, which align along the boundary of the velocity contrast. We will relocate those swarms using our new model. Despite the less dense ray coverage west of the valley, the velocity contrast between the West Mesa and the valley is evident. The Superstition Hills fault appears to be underlain by a comparatively lower velocity structure connecting southeastward to the Imperial fault. We will incorporate more data to improve the results.

  19. Foam frac in the Mesa Verde

    SciTech Connect

    Not Available

    1981-04-01

    Bittercreek Fed 1-3 is a gas well tapping the Mesaverde in the Asphalt Creek area south of Vernal, Utah, in the Uinta basin. The job was to pump 216,000 lb of 20/40 sand in 123,360 gal foam through 4 sets of perforations between 6030 ft and 6293 ft. In January 1981, Ensearch Exploration set in motion the first foam fracture done by the company in the Mesa Verde - possibly the first foam frac ever done in the Mesa Verde. Smith Energy Services performed the stimulation, delivering the highest concentration of proppant ever pumped in the Rocky Mt. - 4 ppg 20/40 sand/gal of foam at the formation. The Bittercreek Fed 1-3 had been treated conventionally on 3 previous occasions. In turning to foam fracture treatment, Ensearch hoped to minimize formation damage and maximize production in the fluid sensitive formation.

  20. The Mesa Arizona Pupil Tracking System

    NASA Technical Reports Server (NTRS)

    Wright, D. L.

    1973-01-01

    A computer-based Pupil Tracking/Teacher Monitoring System was designed for Mesa Public Schools, Mesa, Arizona. The established objectives of the system were to: (1) facilitate the economical collection and storage of student performance data necessary to objectively evaluate the relative effectiveness of teachers, instructional methods, materials, and applied concepts; and (2) identify, on a daily basis, those students requiring special attention in specific subject areas. The system encompasses computer hardware/software and integrated curricula progression/administration devices. It provides daily evaluation and monitoring of performance as students progress at class or individualized rates. In the process, it notifies the student and collects information necessary to validate or invalidate subject presentation devices, methods, materials, and measurement devices in terms of direct benefit to the students. The system utilizes a small-scale computer (e.g., IBM 1130) to assure low-cost replicability, and may be used for many subjects of instruction.

  1. The MESA accelerometer for space application

    NASA Technical Reports Server (NTRS)

    Lange, William G.; Dietrich, Robert W.

    1990-01-01

    An electrostatically suspended proof mass in the Miniature Electrostatic Accelerometer (MESA) is used to measure acceleration in the submicro-g range. Since no fixed mechanical suspension (such as springs or strings) is used, the constrainment scaling can be changed electrically after being placed in orbit. A single proof mass can sense accelerations in three axes simultaneously. It can survive high-g pyrotechnic-generated shocks and launch environments while unpowered.

  2. High Temperature Superconducting Terahertz Emitters with Various Mesa Structures

    NASA Astrophysics Data System (ADS)

    Delfanazari, Kaveh; Tsujimoto, M.; Kashiwagi, T.; Asai, H.; Kitamura, T.; Yamamoto, T.; Sawamura, M.; Ishida, K.; Watanabe, C.; Sekimoto, S.; Minami, H.; Tachiki, M.; Hattori, T.; Klemm, R. A.; Kadowaki, K.

    2013-03-01

    In 2007, the first observation of the coherent terahertz (THz) electromagnetic (EM) waves from a mesa structures of intrinsic Josephson junctions (IJJs) in high temperature superconductor Bi2Sr2CaCu2O8+δ (Bi-2212) is reported. The ac-Josephson effect as well as the cavity resonance conditions is considered as the principle mechanism of the THz radiation. In order to understand the cavity effect in THz radiation from IJJ mesas more clearly, we studied mesas with various geometries; various kinds of triangles, and pentagonal mesas with various sizes and thicknesses. The focused ion beam (FIB) milling technique is used in all mesa fabrications. In this talk, we discuss our recent progress in THz emission observation in pentagonal mesas. This work has been supported in part by CREST-JST (Japan Science and Technology Agency), WPI-MANA project (NIMS).

  3. Kinetics of mesa overlayer growth: Climbing of adatoms onto the mesa top

    SciTech Connect

    Han, Yong; Liu, Feng; Li, Shao-Chun; Jia, Jin-Feng; Xue, Qi-Kun; Lee, Byeong-Joo

    2008-01-17

    We have calculated the energy barriers for an adatom climbing up onto a Pb mesa top either over a facet-facet edge or through a facet-step joint, using a modified embedded atom method. We found that the second process is not only thermodynamically more favorable than the first one but also much faster with a diminishing barrier. Our results provide a plausible explanation for the experimentally observed intriguing growth behavior of a Pb mesa. The underlying mechanisms can be generally applicable to other systems.

  4. Surficial Geologic Map of Mesa Verde National Park, Montezuma County, Colorado

    USGS Publications Warehouse

    Carrara, Paul E.

    2012-01-01

    Mesa Verde National Park in southwestern Colorado was established in 1906 to preserve and protect the artifacts and dwelling sites, including the famous cliff dwellings, of the Ancestral Puebloan people who lived in the area from about A.D. 550 to A.D. 1300. In 1978, the United Nations designated the park as a World Heritage Site. The geology of the park played a key role in the lives of these ancient people. For example, the numerous (approximately 600) cliff dwellings are closely associated with the Cliff House Sandstone of Late Cretaceous age, which weathers to form deep alcoves. In addition, the ancient people farmed the thick, red loess (wind-blown dust) deposits on the mesa tops, which because of its particle size distribution has good moisture retention properties. The soil in this loess cover and the seasonal rains allowed these people to grow their crops (corn, beans, and squash) on the broad mesa tops. Today, geology is still an important concern in the Mesa Verde area because the landscape is susceptible to various forms of mass movement (landslides, debris flows, rockfalls), swelling soils, and flash floods that affect the park's archeological sites and its infrastructure (roads, septic systems, utilities, and building sites). The map, which encompasses an area of about 100 mi2 (260 km2), includes all of Mesa Verde National Park, a small part of the Ute Mountain Indian Reservation that borders the park on its southern and western sides, and some Bureau of Land Management and privately owned land to the north and east. Surficial deposits depicted on the map include: artificial fills, alluvium of small ephemeral streams, alluvium deposited by the Mancos River, residual gravel on high mesas, a combination of alluvial and colluvial deposits, fan deposits, colluvial deposits derived from the Menefee Formation, colluvial deposits derived from the Mancos Shale, rockfall deposits, debris flow deposits, earthflow deposits, translational and rotational landslide

  5. Local variations of seismic velocity in the Imperial Valley, California

    SciTech Connect

    Jackson, D.D.; Lee, W.B.

    1981-12-01

    The authors inverted local earthquake arrival times to estimate spatial variations of seismic velocity. Their model consisted of near-surface station corrections and local perturbations to a standard crustal velocity model. The authors found a zone of relatively high-velocity trending southeast from the Salton Sea. This zone corresponds to the region of thickest sediments. The authors compared results with those of teleseismic studies by Savino et al (1977). The agreement was excellent, suggesting that the teleseismic delays are caused primarily by crustal velocity variations. Residual delays between the teleseismic observations and predicted crustal delays imply crustal thinning of 3 or 4 km along the axis of the valley. Known geothermal resource areas at Salton Sea (or Obsidian Buttes), Brawley, and East Mesa, lie on the axis of a zone of thin crust, and they may be intimately related to the Brawley fault. Neither local earthquake nor teleseismic arrival times can discriminate between these hypotheses, but the issue might be resolved by combining both types of data. Known geothermal resource areas at Heber, Dunes, and Glamis, lie away from the projected trace of the Brawley fault. These areas are nearly aseismic, and overlie crust with apparent seismic velocities only mildly higher than the regional average. These apparent velocity anomalies could be related to crustal thinning, but because of the very mild Bouguer gravity anomalies in these areas, it seems more likely that the velocity anomalies occur entirely within the crust. 7 references, 6 figures, 3 tables.

  6. Changing Patterns of Cultural Imperialism in a Developing Country.

    ERIC Educational Resources Information Center

    Everitt, John

    Using Belize, Central America, as an example, this paper illustrates some of the changing patterns of cultural imperialism that can presently be viewed in the emerging nations of the world. Cultural imperialism is defined as the process whereby the culture of a weaker nation is dominated by that of a stronger nation. In September 1981, Belize,…

  7. Bologna Goes Global: A New Imperialism in the Making?

    ERIC Educational Resources Information Center

    Hartmann, Eva

    2008-01-01

    This paper argues that imperialism continues to exist today. It focuses on the ideational dimension of such power constellation and highlights the role of "educational diplomacy". Specifically, it examines norm-settings within international educational politics as a way of identifying shifts within what might be called benevolent imperialism. At…

  8. Uranium Reserves on Planet Zeus: A Unit on Imperialism.

    ERIC Educational Resources Information Center

    Price, Mary A.

    1988-01-01

    Designed as a follow up unit on the study of imperialism, this lesson requires students to use their knowledge of imperialism to solve a problem that could arise in the future space frontier. Organized for small group participation, the lesson focuses on international cooperation. Includes all required resources and suggests appropriate additional…

  9. 36 CFR 7.39 - Mesa Verde National Park.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 1 2012-07-01 2012-07-01 false Mesa Verde National Park. 7.39 Section 7.39 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.39 Mesa Verde National Park. (a) Visiting...

  10. 36 CFR 7.39 - Mesa Verde National Park.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 1 2013-07-01 2013-07-01 false Mesa Verde National Park. 7.39 Section 7.39 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.39 Mesa Verde National Park. (a) Visiting...

  11. 36 CFR 7.39 - Mesa Verde National Park.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 1 2011-07-01 2011-07-01 false Mesa Verde National Park. 7.39 Section 7.39 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.39 Mesa Verde National Park. (a) Visiting...

  12. 36 CFR 7.39 - Mesa Verde National Park.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 1 2014-07-01 2014-07-01 false Mesa Verde National Park. 7.39 Section 7.39 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.39 Mesa Verde National Park. (a) Visiting...

  13. Mathematics, Engineering Science Achievement (MESA). Washington's Community and Technical Colleges

    ERIC Educational Resources Information Center

    Washington State Board for Community and Technical Colleges, 2014

    2014-01-01

    Growing Science, Technology, Education, and Mathematics (STEM) talent Washington MESA--Mathematics Engineering Science Achievement--helps under-represented community college students excel in school and ultimately earn STEM bachelor's degrees. MESA has two key programs: one for K-12 students, and the other for community and technical college…

  14. How To Start a MESA Center at a Community College.

    ERIC Educational Resources Information Center

    Claire, Susan

    Between September 1990 and December 1991, Cabrillo College implemented the Math, Engineering, and Science Achievement (MESA) program to increase the number of underrepresented minority students enrolling in scientific disciplines at Cabrillo and subsequently transferring to four-year colleges. The initial program was targeted to 200 MESA members…

  15. 36 CFR 7.39 - Mesa Verde National Park.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Mesa Verde National Park. 7.39 Section 7.39 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.39 Mesa Verde National Park. (a) Visiting...

  16. Imperial climatographies from Tyrol to Turkestan.

    PubMed

    Coen, Deborah R

    2011-01-01

    This article argues for the importance of Europe's continental empires, Habsburg and Romanov, to the emergence of a physical-dynamical model of the global climate before World War I. It begins to identify a set of questions and methods that were distinctive of climatology as a continental-imperial science of "regionalization" with a global vision. The focus is on studies of mountain climatology by Heinrich von Ficker and A. I. Voeikov in the ecologically vulnerable regions of Tyrol and western Turkestan. This continental-imperial context deserves historians' attention because it suggests a new model for the globalization of knowledge: not simply a matter of scaling up, globalization must be understood as a process of seeing across scales, of recognizing causal connections between local, regional, and planetary phenomena. "For a change, the material for a dissertation was procured mostly with the feet." Heinz Ficker, of his research on the föhn wind in Tyrol, 1906 "Science is something beautiful, especially when you can do it on horseback." Ficker in his journal in 1913, in a mountain pass in central Asia.

  17. Self-replication of mesa patterns in reaction diffusion systems

    NASA Astrophysics Data System (ADS)

    Kolokolnikov, T.; Ward, M. J.; Wei, J.

    2007-12-01

    Certain two-component reaction-diffusion systems on a finite interval are known to possess mesa (box-like) steady-state patterns in the singularly perturbed limit of small diffusivity for one of the two solution components. As the diffusivity D of the second component is decreased below some critical value Dc, with Dc=O(1), the existence of a steady-state mesa pattern is lost, triggering the onset of a mesa self-replication event that ultimately leads to the creation of additional mesas. The initiation of this phenomena is studied in detail for a particular scaling limit of the Brusselator model. Near the existence threshold Dc of a single steady-state mesa, it is shown that an internal layer forms in the centre of the mesa. The structure of the solution within this internal layer is shown to be governed by a certain core problem, comprised of a single nonautonomous second-order ODE. By analysing this core problem using rigorous and formal asymptotic methods, and by using the Singular Limit Eigenvalue Problem (SLEP) method to asymptotically calculate small eigenvalues, an analytical verification of the conditions of Nishiura and Ueyama [Y. Nishiura, D. Ueyama, A skeleton structure of self-replicating dynamics, Physica D 130 (1) (1999) 73-104], believed to be responsible for self-replication, is given. These conditions include: (1) The existence of a saddle-node threshold at which the steady-state mesa pattern disappears; (2) the dimple-shaped eigenfunction at the threshold, believed to be responsible for the initiation of the replication process; and (3) the stability of the mesa pattern above the existence threshold. Finally, we show that the core problem is universal in the sense that it pertains to a class of reaction-diffusion systems, including the Gierer-Meinhardt model with saturation, where mesa self-replication also occurs.

  18. The Laramide Mesa formation and the Ojo de Agua caldera, southeast of the Cananea copper mining district, Sonora, Mexico

    USGS Publications Warehouse

    Cox, Dennis P.; Miller, Robert J.; Woodbourne, Keith L.

    2006-01-01

    The Mesa Formation extends from Cananea, Mexico, southeast to the Sonora River and is the main host rock of Laramide porphyry copper deposits in the Cananea District and at the Alacran porphyry prospect to the east. The Mesa consists of two members-a lower andesite and an upper dacite. The lowest part of the dacite member is a crystal tuff about 100 m thick. This tuff is the outfall of a caldera centered near the village of Ojo de Agua, dated by 40Ar/39Ar at 65.8 Ma ?0.4. The Ojo de Agua Caldera is about 9 km in diameter and is filled by a light gray biotite dacite tuff with abundant flattened pumice fragments. The volume of the caldera is estimated to be 24 km3.

  19. Topographies of forensic practice in Imperial Germany.

    PubMed

    Engstrom, Eric J

    2014-01-01

    This article examines the topography and "cultural machinery" of forensic jurisdictions in Imperial Germany. It locates the sites at which boundary disputes between psychiatric and legal professionals arose and explores the strategies and practices that governed the division of expert labor between them. It argues that the over-determined paradigms of 'medicalization' and 'biologization' have lost much of their explanatory force and that historians need to refocus their attention on the institutional and administrative configuration of forensic practices in Germany. After first sketching the statutory context of those practices, the article explores how contentious jurisdictional negotiations pitted various administrative, financial, public security, and scientific interests against one another. The article also assesses the contested status of psychiatric expertise in the courtroom, as well as post-graduate forensic psychiatric training courses and joint professional organizations, which drew the two professional communities closer together and mediated their jurisdictional disputes.

  20. Participatory advocacy: a counter to media imperialism.

    PubMed

    Brown, M

    1996-01-01

    Western media have a history of defining news worldwide, presenting news from a Western perspective which distorts and denies the truth as perceived from developing countries. Western news coverage of developing countries seems to emphasize countries' fragility, instability, and corruption, leading people to believe that the economic problems of developing countries are due to internal failures. That view is then transferred back to indigenous peoples and communities through major Western news agencies and mass media. Participatory communication is based upon the notion that people have the right to decide how they want themselves and their situations to be portrayed, to decide what information is useful to them and their community, and to be integral players in the communication process. With regard to media imperialism, the author discusses implications for advocacy activities, participatory communication approaches, participatory advocacy, participatory advocacy in South Asia, girl child drama in Nepal, drug abuse television drama in Nepal, and the advocacy challenge.

  1. MESA: A 3-D Eulerian hydrocode for penetration mechanics studies

    SciTech Connect

    Mandell, D.A.; Holian, K.S.; Henninger, R.

    1991-01-01

    We describe an explicit, finite-difference hydrocode, called MESA, and compare calculations to metal and ceramic plate impacts with spall and to Taylor cylinder tests. The MESA code was developed with support from DARPA, the Army and the Marine Corps for use in armor/anti-armor problems primarily, but the code has been used for a number of other applications. MESA includes 2-D and 3-D Eulerian hydrodynamics, a number of material strength and fracture models, and a programmed burn high explosives model. 15 refs., 4 figs.

  2. Media Imperialism and the Videocassette Recorder: The Case of Turkey.

    ERIC Educational Resources Information Center

    Ogan, Christine

    1988-01-01

    Argues that the growing decentralization of media in developing countries, particularly through the videocassette recorder and more locally produced media products, requires a rethinking of the cultural and economic components of the media imperialism thesis. (ARH)

  3. Overview of the Grand Junction Office from Bluff east of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Overview of the Grand Junction Office from Bluff east of facility. Note Buildings #35. #33 and #31A in lower left of photograph. VIEW WEST - Department of Energy, Grand Junction Office, 2597 B3/4 Road, Grand Junction, Mesa County, CO

  4. MESA: A Model Program for Employer-Student Matching.

    ERIC Educational Resources Information Center

    Somers, James R.; Wilder, Jerry R.

    1981-01-01

    Describes a computerized job-matching program (MESA) that assists students and alumni in securing positions. Results indicate this system has introduced students to a large number of otherwise unconsidered career opportunities. (RC)

  5. Mystery of the Mesa: A Science Detective Story.

    ERIC Educational Resources Information Center

    Brook, Richard; Tisdale, Mary

    1993-01-01

    Explains how archaeologists who found the "Mesa Site" in Northern Alaska used evidence to make interpretations about America's earliest settlers. Includes related science activities and a color poster. (PR)

  6. Interpretation of shallow crustal structure of the Imperial Valley, California, from seismic reflection profiles

    SciTech Connect

    Severson, L.K.

    1987-05-01

    Eight seismic reflection profiles (285 km total length) from the Imperial Valley, California, were provided to CALCRUST for reprocessing and interpretation. Two profiles were located along the western margin of the valley, five profiles were situated along the eastern margin and one traversed the deepest portion of the basin. These data reveal that the central basin contains a wedge of highly faulted sediments that thins to the east. Most of the faulting is strike-slip but there is evidence for block rotations on the scale of 5 to 10 kilometers within the Brawley Seismic Zone. These lines provide insight into the nature of the east and west edges of the Imperial Valley. The basement at the northwestern margin of the valley, to the north of the Superstition Hills, has been normal-faulted and blocks of basement material have ''calved'' into the trough. A blanket of sediments has been deposited on this margin. To the south of the Superstition Hills and Superstition Mountain, the top of the basement is a detachment surface that dips gently into the basin. This margin is also covered by a thick sequence sediments. The basement of the eastern margin consists of metamorphic rocks of the upper plate of the Chocolate Mountain Thrust system underlain by the Orocopia Schist. These rocks dip to the southeast and extend westward to the Sand Hills Fault but do not appear to cross it. Thus, the Sand Hills Fault is interpreted to be the southern extension of the San Andreas Fault. North of the Sand Hills Fault the East Highline Canal seismicity lineament is associated with a strike-slip fault and is probably linked to the Sand Hills Fault. Six geothermal areas crossed by these lines, in agreement with previous studies of geothermal reservoirs, are associated with ''faded'' zones, Bouguer gravity and heat flow maxima, and with higher seismic velocities than surrounding terranes.

  7. Global Positioning System measurements of strain accumulation across the Imperial Valley, California - 1986-1989

    NASA Technical Reports Server (NTRS)

    Larsen, Shawn; Reilinger, Robert

    1992-01-01

    The Global Positioning System (GPS) data collected in southern California from 1986 to 1989 indicate considerable strain accumulation across the Imperial Valley. Displacements are computed at 29 stations in and near the valley from 1986 to 1988, and at 11 sites from 1988 to 1989. The earlier measurements indicate 5.9 =/- 1.0 cm/yr right-lateral differential velocity across the valley, although the data are heavily influenced by the 1987 Superstition Hills earthquake sequence. Some measurements, especially the east-trending displacements, are suspects for large errors. The 1988 to 1989 GPS displacements are best modeled by 5.2 =/- 0.9 cm/yr of valley crossing deformation, but rates calculated from conventional geodetic measurements (3.4 to 4.3 cm/yr) fit the data nearly as well. There is evidence from GPS and Very Long Base Interferometry (VLBI) observations that the present slip rate along the southern San Andreas fault is smaller than the long-term geologic estimate, suggesting a lower earthquake potential than is currently assumed. Correspondingly, a higher earthquake potential is indicated for the San Jacinto fault. The Imperial Valley GPS sites form part of a 183 station network in southern California and northern Baja California, which spans a cross-section of the North American-Pacific plate boundary.

  8. GPS measurements of strain accumulation across the Imperial Valley, California: 1986-1989

    NASA Technical Reports Server (NTRS)

    Larsen, Shawn; Reilinger, Robert

    1989-01-01

    The Global Positioning System (GPS) data collected in southern California from 1986 to 1989 indicate considerable strain accumulation across the Imperial Valley. Displacements are computed at 29 stations in and near the valley from 1986 to 1988, and at 11 sites from 1988 to 1989. The earlier measurements indicate 5.9 +/- 1.0 cm/yr right-lateral differential velocity across the valley, although the data are heavily influenced by the 1987 Superstition Hills earthquake sequence. Some measurements, especially the east-trending displacements, are suspects for large errors. The 1988 to 1989 GPS displacements are best modeled by 5.2 +/- 0.9 cm/yr of valley crossing deformation, but rates calculated from conventional geodetic measurements (3.4 to 4.3 cm/yr) fit the data nearly as well. There is evidence from GPS and Very Long Base Interferometry (VLBI) observations that the present slip rate along the southern San Andreas fault is smaller than the long-term geologic estimate, suggesting a lower earthquake potential than is currently assumed. Correspondingly, a higher earthquake potential is indicated for the San Jacinto fault. The Imperial Valley GPS sites form part of a 183 station network in southern California and northern Baja California, which spans a cross-section of the North American-Pacific plate boundary.

  9. Inversion of Gravity Data to Define the Pre-Cenozoic Surface and Regional Structures Possibly Influencing Groundwater Flow in the Rainier Mesa Region, Nye County, Nevada

    USGS Publications Warehouse

    Hildenbrand, Thomas G.; Phelps, Geoffrey A.; Mankinen, Edward A.

    2006-01-01

    A three-dimensional inversion of gravity data from the Rainier Mesa area and surrounding regions reveals a topographically complex pre-Cenozoic basement surface. This model of the depth to pre-Cenozoic basement rocks is intended for use in a 3D hydrogeologic model being constructed for the Rainier Mesa area. Prior to this study, our knowledge of the depth to pre-Cenozoic basement rocks was based on a regional model, applicable to general studies of the greater Nevada Test Site area but inappropriate for higher resolution modeling of ground-water flow across the Rainier Mesa area. The new model incorporates several changes that lead to significant improvements over the previous regional view. First, the addition of constraining wells, encountering old volcanic rocks lying above but near pre-Cenozoic basement, prevents modeled basement from being too shallow. Second, an extensive literature and well data search has led to an increased understanding of the change of rock density with depth in the vicinity of Rainier Mesa. The third, and most important change, relates to the application of several depth-density relationships in the study area instead of a single generalized relationship, thereby improving the overall model fit. In general, the pre-Cenozoic basement surface deepens in the western part of the study area, delineating collapses within the Silent Canyon and Timber Mountain caldera complexes, and shallows in the east in the Eleana Range and Yucca Flat regions, where basement crops out. In the Rainier Mesa study area, basement is generally shallow (< 1 km). The new model identifies previously unrecognized structures within the pre-Cenozoic basement that may influence ground-water flow, such as a shallow basement ridge related to an inferred fault extending northward from Rainier Mesa into Kawich Valley.

  10. Inversion of Gravity Data to Define the Pre-Cenozoic Surface and Regional Structures Possibly Influencing Groundwater Flow in the Rainier Mesa Region, Nye County, Nevada.

    SciTech Connect

    Thomas G. Hildenbrand; Geoffrey A. Phelps; Edward A. Mankinen

    2006-09-21

    A three-dimensional inversion of gravity data from the Rainier Mesa area and surrounding regions reveals a topographically complex pre-Cenozoic basement surface. This model of the depth to pre-Cenozoic basement rocks is intended for use in a 3D hydrogeologic model being constructed for the Rainier Mesa area. Prior to this study, our knowledge of the depth to pre-Cenozoic basement rocks was based on a regional model, applicable to general studies of the greater Nevada Test Site area but inappropriate for higher resolution modeling of ground-water flow across the Rainier Mesa area. The new model incorporates several changes that lead to significant improvements over the previous regional view. First, the addition of constraining wells, encountering old volcanic rocks lying above but near pre-Cenozoic basement, prevents modeled basement from being too shallow. Second, an extensive literature and well data search has led to an increased understanding of the change of rock density with depth in the vicinity of Rainier Mesa. The third, and most important change, relates to the application of several depth-density relationships in the study area instead of a single generalized relationship, thereby improving the overall model fit. In general, the pre-Cenozoic basement surface deepens in the western part of the study area, delineating collapses within the Silent Canyon and Timber Mountain caldera complexes, and shallows in the east in the Eleana Range and Yucca Flat regions, where basement crops out. In the Rainier Mesa study area, basement is generally shallow (< 1 km). The new model identifies previously unrecognized structures within the pre-Cenozoic basement that may influence ground-water flow, such as a shallow basement ridge related to an inferred fault extending northward from Rainier Mesa into Kawich Valley.

  11. Paleocene Sepultura Formation: submarine canyon at La Mesa, Baja California, Mexico

    SciTech Connect

    Tellez-Duarte, M.A.; Navarro-Fuentes, J.C.; Valdez-Noriega, M.A.

    1988-03-01

    The Paleocene Sepultura Formation has been interpreted as the result of both deposition in a basin that varied in depth from strandline to at least 30-40 fathoms, and to widely distributed fluvial deposition. At La Mesa, east of Puerto Santa Catarina, Baja California, an excellent exposure exhibits canyon-fed sediments not reported in other places for this formation. The sediments at La Mesa consist of a sequence of alternating clastics and resedimented carbonate materials. The sequence begins with fine sandstone cut by channels, which indicates gravity-induced catastrophic sedimentation, such as debris flows. The channels are filled with massive nodular algal limestone with rip-up clasts of sandstone, some of them 1 m wide, with abundant Turritella pachecoensis and Venericardia sp. The massive limestone is overlain by clastic sediments that, in places, exhibit slumping and laminar bedding with limestone rip-ups. Apparently this unit is an upper-fan deposit. The nodular limestone grades laterally into thin-bedded calcarenites. These allodapic limestones exhibit A and B divisions of the Bouma sequence, similar to overbank levee deposits.

  12. Communication imperialism and dependency: a conceptual clarification.

    PubMed

    Lee, P S

    1988-01-01

    Communications imperialism has to do with the domination of a country's media activities by another. The ownership, structure, distribution or content of the media in 1 country are affected by pressures from media interests of another country or group out of proportion with those of that country. To determine if this is happening we should consider the country's policies, the private sector;s efforts to export communications elements, and actions of the dominant country against the dominated. The 4 aspects of international media in this situation are television program exportation, foreign ownership and control of media distribution, the infringement of capital opinions on other societies, and the transfer of commercialism and broadcasting norms. In addition to the software and hardware and the other forms of communication such as satellites, computers, and transportation of the mass media, there are the cultural effects on the developing countries. In the case of involuntary of voluntary dependency of the recipient country, the effect of the unbalanced international communication can be harmful or beneficial. Communication dependency may not be harmful to the culture of the recipient country. In determining the theory of unbalanced international communications 3 factors should be considered. There are: the role of the interacting countries, the nature of the dependency of the recipient country, and the beneficial or harmful effect of unbalanced communication pattern on that country. PMID:12283101

  13. Autumn daily characteristics of land surface heat and water exchange over the Loess Plateau mesa in China

    NASA Astrophysics Data System (ADS)

    Wen, Jun; Wei, Zhigang; Lü, Shihua; Chen, Shiqiang; Ao, Yinhuan; Liang, Ling

    2007-03-01

    The Loess Plateau, located in northern China, has a significant impact on the climate and ecosystem evolvement over the East Asian continent. In this paper, the preliminary autumn daily characteristics of land surface energy and water exchange over the Chinese Loess Plateau mesa region are evaluated by using data collected during the Loess Plateau land-atmosphere interaction pilot experiment (LOPEX04), which was conducted from 25 August to 12 September 2004 near Pingliang city, Gansu Province of China. The experiment was carried out in a region with a typical landscape of the Chinese Loess Plateau, known as “loess mesa”. The experiment’s field land utilizations were cornfield and fallow farmland, with the fallow field later used for rotating winter wheat. The autumn daily characteristics of heat and water exchange evidently differed between the mesa cornfield and fallow, and the imbalance term of the surface energy was large. This is discussed in terms of sampling errors in the flux observations-footprint; energy storage terms of soil and vegetation layers; contribution from air advections; and low and high frequency loss of turbulent fluxes and instruments bias. Comparison of energy components between the mesa cornfield and the lowland cornfield did not reveal any obvious difference. Inadequacies of the field observation equipment and experimental design emerged during the study, and some new research topics have emerged from this pilot experiment for future investigation.

  14. National uranium resource evaluation: Mesa quaddrangle, Arizona

    SciTech Connect

    Luning, R.H.; Thiede, D.S.; O'Neill, A.J.; Nystrom, R.J.; White, D.L.

    1982-06-01

    The Mesa Quadrangle (2/sup 0/), Arizona, was evaluated to a depth of 1500 meters to identify geologic environments and delineate surface and subsurface areas favorable for the occurrence of uranium deposits. The criteria used to define uranium favorability were developed during the National Uranium Resource Evaluation program. Surface and subsurface studies were augmented by aerial radiometric surveys and hydrogeochemical and stream-sediment reconnaisance studies. The results of the investigations identified three favorable areas: older Precambrian quartz monzonite near Horseshoe Dam; the gray unit of the Dripping Spring quartzite of Precambrian age in the Sierra Ancha, Salt River Canyon, and Mescal Mountain regions; and Tertiary lake beds near Cave Creek, Horseshoe Dam, and northeastern Tonto Basin. Unfavorable environments include nearly all older Precambrian crystalline and metamorphic rocks, most younger Precambrian igneous and sedimentary rocks, parts of the Paleozoic section, igneous intrusives of Laramide age. Tertiary volcanic rocks, and late Tertiary sedimentary rocks. The eastern third of the quadrangle remains unevaluated because access was prohibited or could not be obtained in time. Environments were unevaluated in older Precambrian volcanic, sedimentary, and metamorphic rocks; the Naco and Supai Formations; Cretaceous sedimentary rocks; and many Tertiary sedimentary rocks in intermontane basins and within the southwestern portion of the quadrangle because of time constraints, land access restrictions, and sparsity of subsurface data.

  15. Extracting the MESA SR4000 calibrations

    NASA Astrophysics Data System (ADS)

    Charleston, Sean A.; Dorrington, Adrian A.; Streeter, Lee; Cree, Michael J.

    2015-05-01

    Time-of-flight range imaging cameras are capable of acquiring depth images of a scene. Some algorithms require these cameras to be run in `raw mode', where any calibrations from the off-the-shelf manufacturers are lost. The calibration of the MESA SR4000 is herein investigated, with an attempt to reconstruct the full calibration. Possession of the factory calibration enables calibrated data to be acquired and manipulated even in "raw mode." This work is motivated by the problem of motion correction, in which the calibration must be separated into component parts to be applied at different stages in the algorithm. There are also other applications, in which multiple frequencies are required, such as multipath interference correction. The other frequencies can be calibrated in a similar way, using the factory calibration as a base. A novel technique for capturing the calibration data is described; a retro-reflector is used on a moving platform, which acts as a point source at a distance, resulting in planar waves on the sensor. A number of calibrations are retrieved from the camera, and are then modelled and compared to the factory calibration. When comparing the factory calibration to both the "raw mode" data, and the calibration described herein, a root mean squared error improvement of 51:3mm was seen, with a standard deviation improvement of 34:9mm.

  16. MESA: Mercator scheduler and archive system

    NASA Astrophysics Data System (ADS)

    Merges, Florian; Prins, Saskia; Pessemier, Wim; Raskin, Gert; Perez Padilla, Jesus; Van Winckel, Hans; Aerts, Conny

    2012-09-01

    We have developed an observing scheduling and archive system for the 1.2 meter Mercator Telescope. The goal was to optimize the specific niche of this modern small telescope in observational astrophysics: the building-up of long-term time series of photometric or high-resolution spectroscopic data with appropriate sampling for any given scientific program. This system allows PIs to easily submit their technical requirements and keep track of the progress of the observing programmes. The scheduling system provides the observer with an optimal schedule for the night which takes into account the current observing conditions as well as the priorities and requirements of the programmes in the queue. The observer can conveniently plan an observing night but also quickly adapt it to changing conditions. The archiving system automatically processes new files as they are created, including reduced data. It extracts the metadata and performs the normalization. A user can query, inspect and retrieve observing data. The progress of individual programmes, including timeline and reduced data plots can be seen at any time. Our MESA project is based on free and open source software (FOSS) using the Python programming language. The system is fully integrated with the Mercator Observing Control System1 (MOCS).

  17. Geology of the Anderson Mesa quadrangle, Colorado

    USGS Publications Warehouse

    Cater, Fred W.; Withington, C.F.

    1953-01-01

    The Anderson Mesa quadrangle is one of the eighteen 7 1/2-minute quadrangles covering the principal carnotite-producing area of the southwestern Colorado. The geology of these quadrangles was mapped by the U.S. Geological Survey for the Atomic Energy Commission as part of a comprehensive study of carnotite deposits. The rocks exposed in the eighteenth quadrangles consist of crystalline rocks of pre-Cambrian age and sedimentary rocks that range in age from late Paleozoic to Quarternary. Over much of the area the sedimentary rocks are flat lying, but in places the rocks are disrupted by high-angle faults, and northwest-tending folds. Conspicuous among the folds are large anticlines having cores of intrusive slat and gypsum. Most of the carnotite deposits are confined to the Salt Wash sandstone member of the Jurassic Morrison formation. Within this sandstone, most of the deposits are spottily distributed through an arcuate zone known as the "Uravan Mineral Belt". Individual deposits range in size from irregular masses containing many thousands of tons. The ore consists of largely of sandstone selectively impregnated and in part replaced by uranium and vanadium minerals. Most of the deposits appear to be related to certain sedimentary structures in sandstones of favorable composition.

  18. Geology of the Davis Mesa quadrangle, Colorado

    USGS Publications Warehouse

    Cater, Fred W.; Bryner, Leonid

    1953-01-01

    The Davis Mesa quadrangle is one of eighteen 7 1/2-minute quadrangles covering the principal carnotite-producing area of southwestern Colorado. The geology of these quadrangles was mapped by the U.S. Geological Survey for the Atomic Energy Commission as part of a comprehensive study of carnotite deposits. The rocks exposed in the eighteen quadrangles consist of crystalline rocks of pre-Cambrian age and sedimentary rocks that range in age from late Paleozoic to Quaternary. Over much of the area the sedimentary rocks are flat lying, but in places the rocks are disrupted by hih-angle faults, and northwest-trending folds. Conspicuous among the folds are large anticlines having cores of intrusive salt and gypsum. Most of the carnotite deposits are confined to the Salt Wash sandstone member of Jurassic Morrison formation. Within this sandstone, most of the deposits are spottily distributed through an arcuate zone known as "Uruvan Mineral Belt". Individual deposits range in size from irregular masses containing only a few tons of ore to large, tabular masses containing many thousands of tons. The ore consists largely of sandstone selectively impregnated and in part replaced by uranium and vanadium minerals. Most of the deposits appear to be related to certain sedimentary structures in sandstones of favorable composition.

  19. Deep Resistivity Structure of Rainier Mesa-Shoshone Mountain, Nevada Test Site, Nevada

    SciTech Connect

    Theodore H. Asch; Brian D. Rodriguez; Jay A. Sampson; Jackie M. Williams; Maryla Deszcz-Pan

    2006-12-12

    The U. S. Department of Energy (DOE) and the National Nuclear Security Administration (NNSA) at their Nevada Site Office (NSO) are addressing groundwater contamination resulting from historical underground nuclear testing through the Environmental Management (EM) program and, in particular, the Underground Test Area (UGTA) project. During 2005, the U.S. Geological Survey (USGS), funded by the DOE and NNSA-NSO, collected and processed data from twenty-six Magnetotelluric (MT) and Audio-Magnetotelluric (AMT) sites at the Nevada Test Site. Data stations were located in and near Rainier Mesa and Shoshone Mountain to assist in characterizing the pre-Tertiary geology in those areas. These new stations extend to the west the hydrogeologic study that was conducted in Yucca Flat in 2003. This work has helped to refine the character, thickness, and lateral extent of pre Tertiary confining units. In particular, a major goal has been to define the upper clastic confining unit (UCCU – late Devonian to Mississippian-age siliciclastic rocks assigned to the Eleana Formation and Chainman Shale(Bechtel Nevada, 2006)) in the Yucca Flat area and west towards Shoshone Mountain in the south, east of Buckboard Mesa, and onto Rainier Mesa in the north. The Nevada Test Site magnetotelluric data interpretation presented in this report includes the results of detailed two-dimensional (2 D) resistivity modeling for each profile (including alternative interpretations) and gross inferences on the three dimensional (3 D) character of the geology within the region. The character, thickness, and lateral extent of the Chainman Shale and Eleana Formation that comprise the Upper Clastic Confining Unit (UCCU) are generally characterized in the upper 5 km. The interpretation is not well determined where conductive TCU overlies conductive Chainman Shale, where resistive Eleana Formation overlies resistive LCA units, or where resistive VTA rock overlies units of the Eleana Formation. The nature of the

  20. A computationally efficient Multicomponent Equilibrium Solver for Aerosols (MESA)

    NASA Astrophysics Data System (ADS)

    Zaveri, Rahul A.; Easter, Richard C.; Peters, Leonard K.

    2005-12-01

    Development and application of a new Multicomponent Equilibrium Solver for Aerosols (MESA) is described for systems containing H+, NH4+, Na+, Ca2+, SO42-, HSO4-, NO3-, and Cl- ions. The equilibrium solution is obtained by integrating a set of pseudo-transient ordinary differential equations describing the precipitation and dissolution reactions for all the possible salts to steady state. A comprehensive temperature dependent mutual deliquescence relative humidity (MDRH) parameterization is developed for all the possible salt mixtures, thereby eliminating the need for a rigorous numerical solution when ambient RH is less than MDRH(T). The solver is unconditionally stable, mass conserving, and shows robust convergence. Performance of MESA was evaluated against the Web-based AIM Model III, which served as a benchmark for accuracy, and the EQUISOLV II solver for speed. Important differences in the convergence and thermodynamic errors in MESA and EQUISOLV II are discussed. The average ratios of speeds of MESA over EQUISOLV II ranged between 1.4 and 5.8, with minimum and maximum ratios of 0.6 and 17, respectively. Because MESA directly diagnoses MDRH, it is significantly more efficient when RH < MDRH. MESA's superior performance is partially due to its "hard-wired" code for the present system as opposed to EQUISOLV II, which has a more generalized structure for solving any number and type of reactions at temperatures down to 190 K. These considerations suggest that MESA is highly attractive for use in 3-D aerosol/air-quality models for lower tropospheric applications (T > 240 K) in which both accuracy and computational efficiency are critical.

  1. Aeromagnetic map of the Arnold Mesa Roadless Area, Yavapai County, Arizona

    USGS Publications Warehouse

    Davis, Willard E.; Wolfe, Edward W.

    1983-01-01

    The Arnold Mesa Roadless Area is within the transition zone between the Colorado Plateaus to the northeast and the Basin and Range province to the southwest. The transition zone is a belt about 701 miles (120 km) wide that extends diagonally from northwest to south east across central Arizona and parallels the topographic margin of the plateaus. The study area is underlain by Precambrian rocks and gently dipping Paleozoic strata that are largely covered by basaltic lavas and pyroclastic deposits of Miocene age ( McKee and Anderson, 1971). Dacite breccia and tuff are locally interbedded with the basaltic rocks. Sedimentary deposits of late Cenozoic age are dominant in the Verde Valley from about Chasm Creek north; they accumulated in a depositional basin bounded on the west by the Verde fault.

  2. A Computationally Efficient Multicomponent Equilibrium Solver for Aerosols (MESA)

    SciTech Connect

    Zaveri, Rahul A.; Easter, Richard C.; Peters, Len K.

    2005-12-23

    This paper describes the development and application of a new multicomponent equilibrium solver for aerosol-phase (MESA) to predict the complex solid-liquid partitioning in atmospheric particles containing H+, NH4+, Na+, Ca2+, SO4=, HSO4-, NO3-, and Cl- ions. The algorithm of MESA involves integrating the set of ordinary differential equations describing the transient precipitation and dissolution reactions for each salt until the system satisfies the equilibrium or mass convergence criteria. Arbitrary values are chosen for the dissolution and precipitation rate constants such that their ratio is equal to the equilibrium constant. Numerically, this approach is equivalent to iterating all the equilibrium reactions simultaneously with a single iteration loop. Because CaSO4 is sparingly soluble, it is assumed to exist as a solid over the entire RH range to simplify the algorithm for calcium containing particles. Temperature-dependent mutual deliquescence relative humidity polynomials (valid from 240 to 310 K) for all the possible salt mixtures were constructed using the comprehensive Pitzer-Simonson-Clegg (PSC) activity coefficient model at 298.15 K and temperature-dependent equilibrium constants in MESA. Performance of MESA is evaluated for 16 representative mixed-electrolyte systems commonly found in tropospheric aerosols using PSC and two other multicomponent activity coefficient methods – Multicomponent Taylor Expansion Method (MTEM) of Zaveri et al. [2004], and the widely-used Kusik and Meissner method (KM), and the results are compared against the predictions of the Web-based AIM Model III or available experimental data. Excellent agreement was found between AIM, MESA-PSC, and MESA-MTEM predictions of the multistage deliquescence growth as a function of RH. On the other hand, MESA-KM displayed up to 20% deviations in the mass growth factors for common salt mixtures in the sulfate-poor cases while significant discrepancies were found in the predicted multistage

  3. Imperial County geothermal development semi-annual report, October 1, 1980-March 31, 1981

    SciTech Connect

    Not Available

    1981-01-01

    The current geothermal progress in Imperial County is reported. Three areas are reported: Geothermal Administration, Geothermal Planning, and other Geothermal Activities. Geothermal Administration addresses the status of the Imperial Valley Environmental Project (IVEP) transfer, update of the Geothermal Resource Center, and findings of Geothermal field inspections. In addition, the cooperative efforts between industry and the County; Master EIR for the Salton Sea KGRA and the resurveying of the subsidence detection network are covered. Geothermal Planning addresses a Board of Supervisor action on the Union Oil Geothermal Production Permit for 16 wells in the Salton Sea KGRA and a permit for Southern California Edison 10 megawatts power plant in the Salton Sea KGRA. Planning Commission action covers: Amendment of Magma Power's 49 megawatts Geothermal Production Permit to 28 megawatt power plant and relocation of the plant and wells within the Salton Sea KGRA; Exploration permit to Occidental Geothermal for four exploratory wells in East Brawley; Geothermal Production Permit to Southern California Edison to operate a 10 megawatt power plant in the Salton Sea KGRA; and Geothermal production permit to Union Oil for 16 production-injection wells in the Salton Sea KGRA. Lastly, EIR exemptions to CEQA were granted to Chevron for 70 shallow temperature observation holes and Union for fifteen. Other Geothermal Activity addresses the County Direct Heat Development study; the solicitation for district heating and cooling proposals; the new Geothermal Class II-1 disposal site; the DOE Region IX meeting in Tucson; and USGA designating a new KGRA, the East Brawley KGRA, the Westmorland KGRA, and revising the southern border of the Salton Sea KGRA.

  4. 75 FR 54003 - Imperial Savings and Loan Association, Martinsville, VA; Notice of Appointment of Receiver

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-02

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF THE TREASURY Office of Thrift Supervision Imperial Savings and Loan Association, Martinsville, VA; Notice of... Insurance Corporation as sole Receiver for Imperial Savings and Loan Association, Martinsville,...

  5. [Healing and the Roman imperial culture].

    PubMed

    Ziethen, G

    1994-01-01

    From the time of Augustus till Late Antiquity one of the important elements of Roman Imperial policy was the celebration of rituals honouring the Roman Emperor. Elements of Hellenistic ruler cult and traditions of the Roman Republican Age were connected with Roman administration, the economic life and military organisation. Thereby the Roman Emperor generally was considered not only as a powerful and legitimate political leader but also as a well-educated and informed princeps with some kind of ritual sphere. Continuing the traditions of kingship risen in the Oriental monarchies and traduced to the Hellenistic rulers, the Roman Emperor seemed--pictured as Asclepius or Sarapis--to be able to heal not only incurable persons by magic therapy, but also to give a cure to mishandled affairs of state. The hope of the people in the panacea founded on the Emperor's knowledge was explained differently on two intellectual levels: the belief in magical-medical practices against threatening demons and the sophisticated comparisons of the eras of the Roman Empire expressed as the progress of human life from the cradle of iuventus to the old age of senectus. With the image of the Roman State as a human being a tradition began which had been prepared by the parable of the body and the limbs since early Roman historiography. From paganism to the Christianisation of the Roman Empire the vocabulary of healing and therapy was used in papyrological, literary, juridical and theological texts expressing the expectation in impersonation and ceremony of the Roman and Byzantine Emperors till the godblessed monarchs in Christian Europe.

  6. Imperial Valley and Salton Sea, California

    NASA Technical Reports Server (NTRS)

    2002-01-01

    Southern California's Salton Sea is a prominent visual for astronauts. This large lake supports the rich agricultural fields of the Imperial, Coachella and Mexicali Valleys in the California and Mexico desert. The Salton Sea formed by accident in 1905 when an irrigation canal ruptured, allowing the Colorado River to flood the Salton Basin. Today the Sea performs an important function as the sink for agricultural runoff; water levels are maintained by the runoff from the surrounding agricultural valleys. The Salton Sea salinity is high-nearly 1/4 saltier than ocean water-but it remains an important stopover point for migratory water birds, including several endangered species. The region also experiences several environmental problems. The recent increased demands for the limited Colorado River water threatens the amount of water allowed to flow into the Salton Sea. Increased salinity and decreased water levels could trigger several regional environmental crises. The agricultural flow into the Sea includes nutrients and agricultural by-products, increasing the productivity and likelihood of algae blooms. This image shows either a bloom, or suspended sediment (usually highly organic) in the water that has been stirred up by winds. Additional information: The Salton Sea A Brief Description of Its Current Conditions, and Potential Remediation Projects and Land Use Across the U.S.-Mexico Border Astronaut photograph STS111-E-5224 was taken by the STS-111 Space Shuttle crew that recently returned from the International Space Station. The image was taken June 12, 2002 using a digital camera. The image was provided by the Earth Sciences and Image Analysis Laboratory at Johnson Space Center. Additional images taken by astronauts and cosmonauts can be viewed at the NASA-JSC Gateway to Astronaut Photography of Earth.

  7. Location of odor sources and the affected population in Imperial County, California

    SciTech Connect

    Hahn, J.L.

    1981-08-01

    This report is divided into four sections. The first two sections contain general background information on Imperial County. The third section is a general discussion of odor sources in Imperial County, and the fourth maps the specific odor sources, the expected areas of perception, and the affected populations. this mapping is done for the Imperial Valley and each of the four Imperial County KGRA's (Known Geothermal Resource Areas) where odor from the development of the geothermal energy may affect population.

  8. First captive breeding of the imperial parrot (Amazona imperialis).

    PubMed

    Reillo, Paul R; Durand, Stephen; Burton, Minchinton

    2011-01-01

    We describe the rearing and development of the first imperial parrot (Amazona imperialis) hatched and raised in captivity. A single egg was hen-incubated for 28 days, and the chick was parent-fed for ∼14 days, after which it was removed for hand-rearing. Similar to wild, parent-reared imperial nestlings, the chick developed fully within 12 weeks, weaning at 540 g body weight. Endangered and endemic to Dominica, the imperial is a vital flagship for oceanic rainforest conservation. Chronicling the neonatal development of A. imperialis helps illuminate the natural history of this enigmatic species, whose secretive nesting habits and low population density have frustrated a detailed understanding of its ecology and reproduction.

  9. Seismic and geodetic studies of the Imperial Valley, California

    SciTech Connect

    Jackson, D.D.

    1981-05-01

    The Imperial Valley exhibits perhaps the most active current tectonism in the United States; patterns of gravitational and thermal anomalies, along with geodetic measurements, strike-slip faulting, and recent volcanism suggest that the continental crust may still be spreading (Elders et al., 1972). In recent years, the United States Geological Survey and Caltech have added new seismic stations into a dense network in the Imperial Valley to study in detail the relationship between geothermal areas and earthquakes, and to understand the tectonic processes taking place there. The purposes of this study are to: (1) examine crustal structure using recently available data on P-wave arrival times of local earthquakes; (2) examine the leveling data for evidence of tectonic subsidence or uplift; and (3) study correlations between seismicity, seismic velocity, geodetic motion, geothermal activity, and local geology to provide a more consistent picture of the tectonics of the Imperial Valley.

  10. Total PCBs and PCB congeners in Spanish Imperial Eagle eggs

    SciTech Connect

    Hernandez, L.M.; Fernandez, M.A.; Gonzalez, M.J. )

    1989-11-01

    The Spanish Imperial Eagle Aquila (heliaca) adalberti is the only directly endangered bird of prey in Europe. Lowered reproductive success in numerous bird species has been associated with eggshell thinning and reduced production caused by DDE, the most common organochlorine residue found in wild birds. Polychlorinated biphenyls (PCBs) are usually the second most common organochlorine pollutant found in wild birds. Research to evaluate the incidence of organochlorine pollutants in the Spanish Imperial Eagle has been previously conducted. The authors have now determined the levels of total PCBs and selected PCB congeners in 34 eggs of Spanish Imperial Eagle collected at Donana National Park, Castile Plateau and Nature Park of Monfrague, since this has considerable significance when attempts are made to correlate the embryonic mortality of avian wildlife with PCB residue levels.

  11. San Diego Gas and Electric Company Imperial Valley geothermal activities

    NASA Technical Reports Server (NTRS)

    Hinrichs, T. C.

    1974-01-01

    San Diego Gas and Electric and its wholly owned subsidiary New Albion Resources Co. have been affiliated with Magma Power Company, Magma Energy Inc. and Chevron Oil Company for the last 2-1/2 years in carrying out geothermal research and development in the private lands of the Imperial Valley. The steps undertaken in the program are reviewed and the sequence that must be considered by companies considering geothermal research and development is emphasized. Activities at the south end of the Salton Sea and in the Heber area of Imperial Valley are leading toward development of demonstration facilities within the near future. The current status of the project is reported.

  12. Convergent and Discriminant Validity of the Microcomputer Evaluation Screening and Assessment (MESA) Interest Survey.

    ERIC Educational Resources Information Center

    Janikowski, Timothy P.; And Others

    1990-01-01

    Examined construct validity of Microcomputer Evaluation Screening and Assessment (MESA) Interest Survey. Administered MESA and United States Employment Service (USES) Interest Inventory to 74 volunteer rehabilitation clients. Evidence supported convergent and discriminant validity of MESA. Found fewer significant intercorrelations among MESA…

  13. Modeling edge effects of mesa diodes for silicon photovoltaics

    NASA Astrophysics Data System (ADS)

    Appel, Jesse S.

    A mesa diode has been modeled and its performance under dark and illuminated conditions has been simulated using a commercial finite element software package. These simulations have led to a determination of the self-consistent solution to the continuity equations for electrons and holes using the steady-state drift-diffusion model for carrier dynamics coupled with electric potential determined from Poisson's equation. The purpose of these simulations has been to determine the influence of edge conditions on the overall performance of mesa diodes under dark and illuminated conditions. Mesa diode arrays are fabricated on crystalline silicon solar cells. They are an array of small area solar cells that are electrically isolated from one another. They can be probed to spatially measure the current density vs. voltage curves under dark and illuminated conditions. The underlying models of bulk and surface recombination mechanisms have been well established for crystalline silicon based semiconductor devices such as the mesa diode. However, the combination of these phenomena that occur during the simulation of the operation of the mesa diode results in a unique edge effect that can significantly change the overall performance of the mesa diode. In particular, the simulations performed show that the space charge region becomes extended along the vertical edge of the mesa diode due to the fixed positive surface charge. At the intersection of the vertical edge and step, a strong electric field is produced because it has a small convex radius of curvature. Depending on the sharpness of this intersection, the entire device can become significantly shunted. Simulations have been performed with a sharp corner and a smooth curve at the intersection of the vertical edge and the step. The use of a smooth curved transition results in significantly lower dark current density vs. voltage and a greater open circuit voltage and fill factor under illumination. Yet, even with a curved

  14. Geology of the Rainier Mesa-Aqueduct Mesa tunnel areas: U12n tunnel

    SciTech Connect

    Hoover, D.L.; Magner, J.E.

    1990-01-01

    The U12n tunnel area is located beneath Rainier Mesa on the Nevada Test Site, Nye County, Nevada. Stratigraphic units in the U12n area include Precambrian and Cambrian quartzite, Ordovician to Devonian dolomite and limestone, Cretaceous quartz monzonite, 25 Miocene and Pliocene volcanic rock units, and Quaternary colluvium and alluvium. Volcanic rocks in drill holes are classified into two chemical groups, four depositional processes, and four alteration types. Alteration of the volcanic rocks to predominantly zeolites, clay minerals, or silica is related to both stratigraphy and structure. Pre-volcanic structures are the CP thrust fault, a right-lateral fault zone that can be projected into the U12n area, and the Gold Meadows stock; Tertiary structures are depositional folds and predominantly normal faults. The right-lateral fault zone may have provided pre-existing planes of weakness during Tertiary deformation that resulted in west-northwest to northwest normal faults in the U12n area in contrast to north-south to north-northeast faults north and south of the U12n area. Normal faults at tunnel level have displacements that range from less than 3 to 125 ft or more. The Tertiary volcanic rocks were deposited on a pre-Tertiary, steep-sided drainage system and formed depositional folds. The Rainier Mesa depositional syncline is the major structures in the U12n area in addition to the normal faults. Drill-hole data indicate that the axis of syncline in the volcanic rocks parallels the contact between quartzite in the upper plate and dolomite and limestone in the lower plate of the CP thrust fault. 29 refs., 6 figs., 10 tabs.

  15. [The influenza pandemic of 1782, with special reference to its occurrence in the Imperial City of Nuremberg].

    PubMed

    Vasold, Manfred

    2011-01-01

    In Germany, very little research has been done on the flu pandemic of 1782. The year before, in 1781, an epidemic of dysentery had ravaged Central Europe quite seriously. The flu pandemic began in Germany in spring 1782. It took its origin in the Far East, probably in Imperial China. From there it slowly traveled westward and finally hit Russia and Germany. In early 1782, it arrived in eastern Prussia. Mortality rose, in Königsberg (Kaliningrad) mainly people over 30 died. From the German coast on the Baltic Sea the virus soon crossed over to England and Scotland. Within Germany it slowly moved southward, to places like Berlin, Weimar and further south. In Berlin very many people became sick. In spring 1782, in many parts of Germany, from east to west, people were bed-ridden. In Nuremberg, a young doctor described the symptoms of the disease and the therapy he gave to his patients in a pamphlet but apart from that there are few sources. Probably not many people consulted a doctor. Mortality in Nuremberg, it seems, did not rise very much. The city had been in decline since the 1750s, its population now shrunk even further. When this scourge hit Central Europe, the Holy Roman Empire was in decline, after an attack of famine and pestilence in the early 1770s and that epidemic of dysentery in 1781. It finally collapsed some 25 years later, in 1806, and the Imperial City of Nuremberg was absorbed by the Kingdom of Bavaria.

  16. The Historiography of British Imperial Education Policy, Part I: India

    ERIC Educational Resources Information Center

    Whitehead, Clive

    2005-01-01

    Colonial education has been controversial and widely divergent interpretations have been offered from contrasting ideological perspectives. British imperial education policy was highly contended during the colonial era and remains a contentious issue amongst many contemporary historians and a critical review of the historiography of the subject is…

  17. Martha Whiteley of Imperial College, London: A Pioneering Woman Chemist

    ERIC Educational Resources Information Center

    Nicholson, Rafaelle M.; Nicholson, John W.

    2012-01-01

    Martha Whiteley (1866-1956) was one of the most important women chemists in the United Kingdom in the first half of the 20th century. In a male-dominated field, she was an academic on the staff of a co-educational university, Imperial College, London, where she carried out research of her own choosing, rather than assisting a male professor. She…

  18. Language Choice and Cultural Imperialism: A Nigerian Perspective.

    ERIC Educational Resources Information Center

    Bisong, Joseph

    1995-01-01

    Argues against the thesis put forth in Phillipson's "Linguistic Imperialism," that the relationship between core English-speaking countries and periphery-English countries is one of dominant and dominated languages, as it applies to Nigeria. It is maintained that the sociolinguistic and sociocultural realities of the country have not been properly…

  19. (Re)experiencing Hegemony: The Linguistic Imperialism of Robert Phillipson.

    ERIC Educational Resources Information Center

    Berns, Margie; Barrett, Jeanelle; Chan, Chak; Chikuma, Yoshiki; Friedrich, Patricia; Hadjidimos, Olga-Maria; Harney, Jill; Hislope, Kristi; Johnson, David; Kimball, Suzanne; Low, Yvonne; McHenry, Tracey; Palaiologos, Vivienne; Petray, Marnie; Shapiro, Rebecca; Shook, Anna Ramirez

    1998-01-01

    Reading Phillipson's "Linguistic Imperialism" in a World Englishes graduate seminar at Purdue University prompted intense discussion not only on the issues the author raised, but also on the rhetorical style and strategies that he chose to present a story of oppression. This article documents the reactions of the students.(Author/VWL)

  20. Developing an Integrated Institutional Repository at Imperial College London

    ERIC Educational Resources Information Center

    Afshari, Fereshteh; Jones, Richard

    2007-01-01

    Purpose: This paper aims to demonstrate how a highly integrated approach to repository development and deployment can be beneficial in producing a successful archive. Design/methodology/approach: Imperial College London undertook a significant specifications process to gather and formalise requirements for its repository system. This was done…

  1. US Imperialism, Transmodernism and Education: A Marxist Critique

    ERIC Educational Resources Information Center

    Cole, Mike

    2004-01-01

    The author begins by discussing David Geoffrey Smith's analysis of the enantiomorphism inherent in the rhetoric of New American Imperialism. He goes on to examine critically Smith's defence of Enrique Dussel's advocacy of transmodernism as a way of understanding this enantiomorphism and of moving beyond what are seen as the constraints of both…

  2. Out of Place: Economic Imperialisms in Early Childhood Education

    ERIC Educational Resources Information Center

    Stuart, Margaret

    2016-01-01

    New Zealand has received world-wide accolades for its Early Childhood Education (ECE) curriculum, Te Whariki. This paper explores the tension between economic imperialism, and a curriculum acknowledged as visionary. The foundational ideas of Te Whariki emanate from sociocultural and anti-racist pedagogies. However, its implementation is hampered…

  3. Imperial Contradictions: Is the Valley a Watershed, Region, or Cyborg?

    ERIC Educational Resources Information Center

    Rudy, Alan P.

    2005-01-01

    Is California's Imperial Valley a watershed? If so, at what level and by what topographic logic? Is it a region? If so, at what level and by what geographic logic? Are its boundaries natural, political, or multivalent on different scales? In short, this essay looks at the special (re)production of environmental conditions within a cyborg world.…

  4. Philosophy and Education in Stoicism of the Roman Imperial Era

    ERIC Educational Resources Information Center

    Reydams-Schils, G.

    2010-01-01

    The Stoics of the Roman Imperial period share the imperative that education should not focus on erudition for its own sake, but contribute to the pursuit of the good life as they define it in philosophical terms. Hence these later Stoics express similar concerns about the technical and theoretical aspects of philosophy as they do about…

  5. Kinderland in the Fatherland: Growing Children in Imperial Berlin

    ERIC Educational Resources Information Center

    Brian, Amanda

    2009-01-01

    This dissertation explores the milieu in which children of Imperial Berlin were raised. When contemporaries in the rapidly expanding capital of the Second German Empire (1871-1918) looked at children, this milieu darkened. The city, they argued, threatened children's growing bodies, and such institutions as the home, the clinic, and the school…

  6. 76 FR 51461 - Notice of Release From Quitclaim Deed and Federal Grant Assurance Obligations for Phoenix-Mesa...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-18

    ... Obligations for Phoenix-Mesa Gateway Airport, Mesa, AZ AGENCY: Federal Aviation Administration, DOT. ACTION... airport property at Phoenix-Mesa Gateway, Mesa, Arizona, from all conditions contained in the Quitclaim... FAA must be mailed or delivered to Mr. Walter Fix, Phoenix-Gateway Airport Authority, 5835 S....

  7. Black Mesa Community School: Ten Years Later. A Progress Report.

    ERIC Educational Resources Information Center

    Black Mesa Community School Board, Inc., Chinle, AZ.

    The Black Mesa Community School, serving elementary school children in an isolated district of the Arizona Navajo reservation, represents the first step in Indian self-determination for area Navajos. The school is the result of community efforts begun in 1972 with a petition to operate a full-time school program for grades K-4 at Kitsilee.…

  8. A Very High Order, Adaptable MESA Implementation for Aeroacoustic Computations

    NASA Technical Reports Server (NTRS)

    Dydson, Roger W.; Goodrich, John W.

    2000-01-01

    Since computational efficiency and wave resolution scale with accuracy, the ideal would be infinitely high accuracy for problems with widely varying wavelength scales. Currently, many of the computational aeroacoustics methods are limited to 4th order accurate Runge-Kutta methods in time which limits their resolution and efficiency. However, a new procedure for implementing the Modified Expansion Solution Approximation (MESA) schemes, based upon Hermitian divided differences, is presented which extends the effective accuracy of the MESA schemes to 57th order in space and time when using 128 bit floating point precision. This new approach has the advantages of reducing round-off error, being easy to program. and is more computationally efficient when compared to previous approaches. Its accuracy is limited only by the floating point hardware. The advantages of this new approach are demonstrated by solving the linearized Euler equations in an open bi-periodic domain. A 500th order MESA scheme can now be created in seconds, making these schemes ideally suited for the next generation of high performance 256-bit (double quadruple) or higher precision computers. This ease of creation makes it possible to adapt the algorithm to the mesh in time instead of its converse: this is ideal for resolving varying wavelength scales which occur in noise generation simulations. And finally, the sources of round-off error which effect the very high order methods are examined and remedies provided that effectively increase the accuracy of the MESA schemes while using current computer technology.

  9. M.A.P.S.: Mesa Action Planning System.

    ERIC Educational Resources Information Center

    Larson, Elizabeth J. Hunt

    This report describes implementation of a districtwide planning model in the Mesa, Arizona, Public Schools. Figures illustrate planning processes throughout the report. Intended as an implementive framework, the planning system's purposes are to assist decision making about resource allocation, program direction, progress measurement, and district…

  10. Delivering Education for Sustainable Development through the MESA Partnership

    ERIC Educational Resources Information Center

    Ogbuigwe, Akpezi

    2008-01-01

    Mainstreaming Environment and Sustainability in African Universities Partnership (MESA) is a programme which grew out of the coming together, in 2004, of a number of African universities met with the United Nations Environment Programme (UNEP), UNESCO and several African regional environment and education projects to assess the status of…

  11. [Physical anthropology studies at Keijo Imperial University Medical School].

    PubMed

    Kim, Ock-Joo

    2008-12-01

    Medical research during the Japanese Colonial Period became systematic and active after the Keijo Imperial University Medical School was established in 1926. Various kinds of research were conducted there including pharmacological, physiological, pathological and parasitological research. The Keijo Imperial University was give a mission to study about Korea. Urgent topics for medical research included control of infectious diseases, hygiene and environmental health that might have affected colonizing bodies of the Japanese as well as the colonized. The bodies of Koreans had been studied by Japanese even before the establishment of the University. The Keijo Imperial University research team, however, organized several field studies for physical anthropology and blood typing research at the national scale to get representative sampling of the people from its north to its south of the Korean peninsula. In the filed, they relied upon the local police and administrative power to gather reluctant women and men to measure them in a great detail. The physical anthropology and blood typing research by the Japanese researchers was related to their eagerness to place Korean people in the geography of the races in the world. Using racial index R.I.(= (A%+AB%)/(B%+AB%)), the Japanese researchers put Koreans as a race between the Mongolian and the Japanese. The preoccupation with constitution and race also pervasively affected the medical practice: race (Japanese, Korean, or Japanese living in Korea) must be written in every kind of medical chart as a default. After the breakout of Chinese-Japanese War in 1937, the Keijo Imperial University researchers extended its physical anthropology field study to Manchuria and China to get data on physics of the people in 1940. The Japanese government and research foundations financially well supported the Keijo Imperial University researchers and the field studies for physical anthropology in Korea, Manchuria and China. The physical

  12. A geophysical-geological transect of the Silent Canyon caldera complex, Pahute Mesa, Nevada

    SciTech Connect

    Ferguson, J.F.; Cogbill, A.H.; Warren, R.G.

    1994-03-10

    Revision of lithological logs for boreholes penetrating the volcanic center at Pahute Mesa, Neveda, has led to a thorough review of the volcanic stratigraphy and geologic structure. The authors have combined this review with a compilation of old and newly acquired gravity and seismic travel time data, producing a unified interpretation along a northwest to southeast profile. The analysis supports a new interpretation of the Silent Canyon caldera complex. The caldera is found to be more asymmetric than previously suggested, with the southeastern boundary formed by linear, high-angle normal faults and a more gently sloping northwestern boundary. The total thickness of volcanic units within the caldera complex does not appear to exceed 5 km. The shallow structure at Pahute Mesa could have a profound effect on the seismic response for regional and teleseismic signals from this nuclear test site. The Silent Canyon caldera complex is actually a set of nested calderas first filled by thick (>1 km) postcaldera lavas and subsequently buried by outflow sheets of the Timber Mountain caldera to the south. Thick, postcaldera lavas filled a half-graben structure formed west of the West Greeley fault, dropping the tops of the youngest caldera-forming units to depths in excess of 2 km. Therefore the western boundary of the caldera complex is poorly defined. East of the West Greeley fault, two overlapping calderas are defined, and stratigraphic data suggest the presence of even older calderas. The youngest caldera, the calc-alkaline Area 20 caldera, is well defined from drill hole data. The Area 20 caldera overlaps the 13.6 Ma peralkaline Grouse Canyon caldera, which is less well defined, but apparently collapsed in trap-door style along the Almendro fault. For both these calderas, collapse continued after the main caldera-forming eruption, concurrent with the accumulation of thick (>1 km) lavas within the peripheral collapse zones. 67 refs., 13 figs.

  13. Old Borrowings and New Models of the University in East Asia

    ERIC Educational Resources Information Center

    Kim, Terri

    2007-01-01

    This paper illustrates the transfer of university models from Europe and America to East Asia and will consider how international power relations in different times transform ideas about the university, in the process of global transfer. These relations will be identified with different forms of the state: imperial, colonial, welfare and market…

  14. 18. Tail race of the Hayden Ditch, looking east toward ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. Tail race of the Hayden Ditch, looking east toward the Tempe Bridge and Hayden's Butte, the site of Charles Hayden's vision of the Tempe Canal. This ditch, which formerly supplied the San Francisco Canal, has been out of service since the 1950s. Photographer: Mark Durben, June 1989. Source: SRPA - Tempe Canal, South Side Salt River in Tempe, Mesa & Phoenix, Tempe, Maricopa County, AZ

  15. Space Agriculture, Tourism and Health - Lessons from British Imperial History

    NASA Astrophysics Data System (ADS)

    Sivier, D. J.

    Advocates of space commercialisation and colonisation have drawn on previous centuries' experience of the exploration and exploitation of terrestrial New Worlds. Although so far chiefly confined to the colonisation of the Americas and exploration of the Antarctic, a proper examination of the problems and solutions faced and found by the late 19th - early 20th century Jamaican tourist trade, mid-Victorian planter agriculturalists in Sri Lanka and the impact of climatic theories of health on early 20th century White colonists in Kenya and Rhodesia, can, if properly applied to today's conditions affecting modern space businesses, offer important insights to the psychological impact and aetiology of disease amongst future space colonists, and the success- ful establishment and management of tourism and agriculture in space. By following the precedents set by the imperial pioneers, it should be possible to apply their founding principles in these sectors successfully, while avoiding the pitfalls and excesses of terrestrial imperialism.

  16. Ambient resonance of Mesa Arch, Canyonlands National Park, Utah

    NASA Astrophysics Data System (ADS)

    Starr, Alison M.; Moore, Jeffrey R.; Thorne, Michael S.

    2015-08-01

    We analyzed the resonance characteristics of a prominent natural arch in Canyonlands National Park, Mesa Arch, as measured from ambient seismic data. Evaluating spectral and polarization attributes, we distinguished the first four resonant frequencies of the arch, 2.9, 6.0, 6.9, and 8.5 Hz, as well as basic properties of the associated mode shapes. We then affirmed experimental data using 3-D numerical modal analysis, providing estimates of material properties and clarifying vibrational mode shapes. Monitoring resonant frequencies over time, we searched for shifts associated with changing environmental conditions and long-term progressive damage. We measured ~3% direct daily variation in resonant frequency associated with changing rock temperature, thermal stress, and stiffening of the rock matrix. Independent tilt data showed similar diurnal cycles associated with thermoelastic stresses and deformation of the arch. We observed no permanent resonant frequency shifts related to irreversible damage of Mesa Arch during our study period.

  17. Selfies of Imperial Cormorants (Phalacrocorax atriceps): What Is Happening Underwater?

    PubMed Central

    Gómez-Laich, Agustina; Yoda, Ken; Zavalaga, Carlos; Quintana, Flavio

    2015-01-01

    During the last few years, the development of animal-borne still cameras and video recorders has enabled researchers to observe what a wild animal sees in the field. In the present study, we deployed miniaturized video recorders to investigate the underwater foraging behavior of Imperial cormorants (Phalacrocorax atriceps). Video footage was obtained from 12 animals and 49 dives comprising a total of 8.1 h of foraging data. Video information revealed that Imperial cormorants are almost exclusively benthic feeders. While foraging along the seafloor, animals did not necessarily keep their body horizontal but inclined it downwards. The head of the instrumented animal was always visible in the videos and in the majority of the dives it was moved constantly forward and backward by extending and contracting the neck while travelling on the seafloor. Animals detected prey at very short distances, performed quick capture attempts and spent the majority of their time on the seafloor searching for prey. Cormorants foraged at three different sea bottom habitats and the way in which they searched for food differed between habitats. Dives were frequently performed under low luminosity levels suggesting that cormorants would locate prey with other sensory systems in addition to sight. Our video data support the idea that Imperial cormorants’ efficient hunting involves the use of specialized foraging techniques to compensate for their poor underwater vision. PMID:26367384

  18. Selfies of Imperial Cormorants (Phalacrocorax atriceps): What Is Happening Underwater?

    PubMed

    Gómez-Laich, Agustina; Yoda, Ken; Zavalaga, Carlos; Quintana, Flavio

    2015-01-01

    During the last few years, the development of animal-borne still cameras and video recorders has enabled researchers to observe what a wild animal sees in the field. In the present study, we deployed miniaturized video recorders to investigate the underwater foraging behavior of Imperial cormorants (Phalacrocorax atriceps). Video footage was obtained from 12 animals and 49 dives comprising a total of 8.1 h of foraging data. Video information revealed that Imperial cormorants are almost exclusively benthic feeders. While foraging along the seafloor, animals did not necessarily keep their body horizontal but inclined it downwards. The head of the instrumented animal was always visible in the videos and in the majority of the dives it was moved constantly forward and backward by extending and contracting the neck while travelling on the seafloor. Animals detected prey at very short distances, performed quick capture attempts and spent the majority of their time on the seafloor searching for prey. Cormorants foraged at three different sea bottom habitats and the way in which they searched for food differed between habitats. Dives were frequently performed under low luminosity levels suggesting that cormorants would locate prey with other sensory systems in addition to sight. Our video data support the idea that Imperial cormorants' efficient hunting involves the use of specialized foraging techniques to compensate for their poor underwater vision.

  19. Hydraulic Property and Soil Textural Classification Measurements for Rainier Mesa, Nevada Test Site, Nevada

    SciTech Connect

    Ebel, Brian A.; Nimmo, John R.

    2009-12-29

    This report presents particle size analysis, field-saturated hydraulic conductivity measurements, and qualitative descriptions of surficial materials at selected locations at Rainier Mesa, Nevada. Measurements and sample collection were conducted in the Rainier Mesa area, including unconsolidated sediments on top of the mesa, an ephemeral wash channel near the mesa edge, and dry U12n tunnel pond sediments below the mesa. Particle size analysis used a combination of sieving and optical diffraction techniques. Field-saturated hydraulic conductivity measurements employed a single-ring infiltrometer with analytical formulas that correct for falling head and spreading outside the ring domain. These measurements may prove useful to current and future efforts at Rainier Mesa aimed at understanding infiltration and its effect on water fluxes and radionuclide transport in the unsaturated zone.

  20. Hydraulic Property and Soil Textural Classification Measurements for Rainier Mesa, Nevada Test Site, Nevada

    USGS Publications Warehouse

    Ebel, Brian A.; Nimmo, John R.

    2010-01-01

    This report presents particle size analysis, field-saturated hydraulic conductivity measurements, and qualitative descriptions of surficial materials at selected locations at Rainier Mesa, Nevada. Measurements and sample collection were conducted in the Rainier Mesa area, including unconsolidated sediments on top of the mesa, an ephemeral wash channel near the mesa edge, and dry U12n tunnel pond sediments below the mesa. Particle size analysis used a combination of sieving and optical diffraction techniques. Field-saturated hydraulic conductivity measurements employed a single-ring infiltrometer with analytical formulas that correct for falling head and spreading outside the ring domain. These measurements may prove useful to current and future efforts at Rainier Mesa aimed at understanding infiltration and its effect on water fluxes and radionuclide transport in the unsaturated zone.

  1. Initiation and growth of mesa corrosion attack during CO{sub 2} corrosion of carbon steel

    SciTech Connect

    Nyborg, R.

    1998-12-31

    The initiation and development of mesa corrosion attack during CO{sub 2} corrosion of carbon steel has been studied in flow loop experiments performed at 80 C and pH 5.8. Video recordings of growing mesa attacks have been performed in a test section with a glass window in the corrosion loop. These observations have shown that the mesa attack can grow both laterally and in depth below a lid of original corrosion film before the film is torn away stepwise by the flow. Possible mechanisms for initiation of mesa corrosion attack are discussed based on the observations from the video recordings. Mesa attacks can result from several small local attacks growing together into one large mesa attack.

  2. A Hydrostrat Model and Alternatives for Groundwater Flow and Contaminant Transport Model of Corrective Action Unit 99: Rainer Mesa-Shoshone Mountain, Nye County, Nevada

    SciTech Connect

    NSTec Geotechnical Sciences Group

    2007-03-01

    The three-dimensional hydrostratigraphic framework model for the Rainier Mesa-Shoshone Mountain Corrective Action Unit was completed in Fiscal Year 2006. The model extends from eastern Pahute Mesa in the north to Mid Valley in the south and centers on the former nuclear testing areas at Rainier Mesa, Aqueduct Mesa, and Shoshone Mountain. The model area also includes an overlap with the existing Underground Test Area Corrective Action Unit models for Yucca Flat and Pahute Mesa. The model area is geologically diverse and includes un-extended yet highly deformed Paleozoic terrain and high volcanic mesas between the Yucca Flat extensional basin on the east and caldera complexes of the Southwestern Nevada Volcanic Field on the west. The area also includes a hydrologic divide between two groundwater sub-basins of the Death Valley regional flow system. A diverse set of geological and geophysical data collected over the past 50 years was used to develop a structural model and hydrostratigraphic system for the model area. Three deep characterization wells, a magnetotelluric survey, and reprocessed gravity data were acquired specifically for this modeling initiative. These data and associated interpretive products were integrated using EarthVision{reg_sign} software to develop the three-dimensional hydrostratigraphic framework model. Crucial steps in the model building process included establishing a fault model, developing a hydrostratigraphic scheme, compiling a drill-hole database, and constructing detailed geologic and hydrostratigraphic cross sections and subsurface maps. The more than 100 stratigraphic units in the model area were grouped into 43 hydrostratigraphic units based on each unit's propensity toward aquifer or aquitard characteristics. The authors organized the volcanic units in the model area into 35 hydrostratigraphic units that include 16 aquifers, 12 confining units, 2 composite units (a mixture of aquifer and confining units), and 5 intrusive confining

  3. Availability, Sustainability, and Suitability of Ground Water, Rogers Mesa, Delta County, Colorado - Types of Analyses and Data for Use in Subdivision Water-Supply Reports

    USGS Publications Warehouse

    Watts, Kenneth R.

    2008-01-01

    The population of Delta County, Colorado, like that in much of the Western United States, is forecast to increase substantially in the next few decades. A substantial portion of the increased population likely will reside in rural subdivisions and use residential wells for domestic water supplies. In Colorado, a subdivision developer is required to submit a water-supply plan through the county for approval by the Colorado Division of Water Resources. If the water supply is to be provided by wells, the water-supply plan must include a water-supply report. The water-supply report demonstrates the availability, sustainability, and suitability of the water supply for the proposed subdivision. During 2006, the U.S. Geological Survey, in cooperation with Delta County, Colorado, began a study to develop criteria that the Delta County Land Use Department can use to evaluate water-supply reports for proposed subdivisions. A table was prepared that lists the types of analyses and data that may be needed in a water-supply report for a water-supply plan that proposes the use of ground water. A preliminary analysis of the availability, sustainability, and suitability of the ground-water resources of Rogers Mesa, Delta County, Colorado, was prepared for a hypothetical subdivision to demonstrate hydrologic analyses and data that may be needed for water-supply reports for proposed subdivisions. Rogers Mesa is a 12-square-mile upland mesa located along the north side of the North Fork Gunnison River about 15 miles east of Delta, Colorado. The principal land use on Rogers Mesa is irrigated agriculture, with about 5,651 acres of irrigated cropland, grass pasture, and orchards. The principal source of irrigation water is surface water diverted from the North Fork Gunnison River and Leroux Creek. The estimated area of platted subdivisions on or partially on Rogers Mesa in 2007 was about 4,792 acres of which about 2,756 acres was irrigated land in 2000. The principal aquifer on Rogers

  4. Map showing ground-water conditions in the Bodaway Mesa area, Coconino County, Arizona; 1977

    USGS Publications Warehouse

    Farrar, C.D.

    1979-01-01

    The Bodaway Mesa area includes about 800 square miles in north-central Arizona, and most of the area is in the Navajo Indian Reservation. Ground-water development has been slight; in 1977 the estimated ground-water withdrawal was less than 5 acre-feet. The Chinle Formation is the principal aquifer tapped by wells, and in places the Moenkopi Formation and the Redwall and Muav Limestones yield water to wells and springs. Water levels in the Chinle Formation are 15 to 200 feet below the land surface. The water from one well completed in the Petrified Forest Member of the Chinle Formation contained 1,210 milligrams per liter of dissolved solids; the dissolved-solids concentrations from two wells in the Shinarump Member of the Chinle were 1,000 and 1,110 milligrams per liter. Three wells penetrate the Moenkopi Formation, but only one yields water. One well obtains its water from the Redwall Limestone, and the water level is 2,200 feet below the land surface. About 60 cubic feet per second of water is discharged by springs that issue from the Redwall and Muav Limestones along the east wall of the canyon of the Little Colorado River. Information on the map includes depth to water, altitude of the water level, specific conductance, and fluoride concentrations. Scale 1:125,000. (Kosco-USGS)

  5. 78 FR 896 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-07

    ... is finalizing approval of revisions to the Imperial County Air Pollution Control District (ICAPCD...)(2)). List of Subjects in 40 CFR Part 52 Environmental protection, Air pollution control... AGENCY 40 CFR Part 52 Revisions to the California State Implementation Plan, Imperial County...

  6. 75 FR 27975 - Revisions to the California State Implementation Plan; Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-19

    ...: EPA is proposing to approve revisions to the Imperial County Air Pollution Control District (ICAPCD... of Subjects in 40 CFR Part 52 Environmental protection, Air pollution control, Intergovernmental... AGENCY 40 CFR Part 52 Revisions to the California State Implementation Plan; Imperial County...

  7. 78 FR 894 - Interim Final Determination To Stay Sanctions, Imperial County Air Pollution Control District

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-07

    ... AGENCY 40 CFR Part 52 Interim Final Determination To Stay Sanctions, Imperial County Air Pollution... of revisions to the Imperial County Air Pollution Control District (ICAPCD) portion of the California...- line instructions. 2. Email: steckel.andrew@epa.gov . 3. Mail or deliver: Andrew Steckel (Air-4),...

  8. The Contemporary Reality of Canadian Imperialism: Settler Colonialism and the Hybrid Colonial State

    ERIC Educational Resources Information Center

    Barker, Adam J.

    2009-01-01

    The author's fundamental contention is this: Canadian society remains driven by the logic of imperialism and engages in concerted colonial action against Indigenous peoples whose claims to land and self-determination continue to undermine the legitimacy of Canadian authority and hegemony. The imperial ambitions of the Canadian state and its…

  9. The Imperial Curriculum: Racial Images and Education in the British Colonial Experience.

    ERIC Educational Resources Information Center

    Mangan, J. A., Ed.

    This book presents a comparative analysis of racial attitudes within formal schooling of both Britain and its former dominions and colonies. It provides essays that examine racism, education, and imperialism, and focuses on the function of education, curriculum, and textbooks in shaping imperial images of dominance and deference. The following…

  10. The Garden and the Jungle: Burnett, Kipling and the Nature of Imperial Childhood

    ERIC Educational Resources Information Center

    Goodwin, Mary

    2011-01-01

    Imperial British India is the point of origin for protagonists in both Frances Hodgson Burnett's "The Secret Garden" (1911) and Rudyard Kipling's "The Jungle Books" (1894-1895), two influential children's stories in which late Victorian notions of childhood education and nature converge with those of national and imperial identity. In Burnett's…

  11. Measuring ground movement in geothermal areas of Imperial Valley, California

    NASA Technical Reports Server (NTRS)

    Lofgren, B. E.

    1974-01-01

    Significant ground movement may accompany the extraction of large quantities of fluids from the subsurface. In Imperial Valley, California, one of the potential hazards of geothermal development is the threat of both subsidence and horizontal movement of the land surface. Regional and local survey nets are being monitored to detect and measure possible ground movement caused by future geothermal developments. Precise measurement of surface and subsurface changes will be required to differentiate man-induced changes from natural processes in this tectonically active region.

  12. Geologic map of the Palisade quadrangle, Mesa County, Colorado

    USGS Publications Warehouse

    Carrara, Paul E.

    2000-01-01

    The Palisade 1:24,000 quadrangle is in Mesa County in western Colorado. Because the map area is dominated by various surficial deposits, the map depicts 22 different Quaternary units. Two prominent river terraces are present in the quadrangle containing gravels deposited by the Colorado River. The map area contains many mass movement deposits. Extensive landslide deposits are present along the eastern part of the quadrangle. These massive landslides originate on the flanks of Grand Mesa, in the Green River and Wasatch Formations, and flow west onto the Palisade quadrangle. In addition, large areas of the eastern and southern parts of the map are covered by extensive pediment surfaces. These pediment surfaces are underlain by debris flow deposits also originating from Grand Mesa. Material in these deposits consists of mainly subangular basalt cobbles and boulders and indicate that these debris flow deposits have traveled as much as 10 km from their source area. The pediment surfaces have been divided into 5 age classes based on their height above surrounding drainages. Two common bedrock units in the map area are the Mancos Shale and the Mesaverde Group both of Upper Cretaceous age. The Mancos shale is common in low lying areas near the western map border. The Mesaverde Group forms prominent sandstone cliffs in the north-central map area. The map is accompanied by a separate pamphlet containing unit descriptions, a section on geologic hazards (including landslides, piping, gullying, expansive soils, and flooding), and a section on economic geology (including sand and gravel, and coal). A table indicates what map units are susceptible to a given hazard. Approximately twenty references are cited at the end of the report.

  13. MESAFace, a graphical interface to analyze the MESA output

    PubMed Central

    Giannotti, M.; Wise, M.; Mohammed, A.

    2014-01-01

    MESA (Modules for Experiments in Stellar Astrophysics) has become very popular among astrophysicists as a powerful and reliable code to simulate stellar evolution. Analyzing the output data thoroughly may, however, present some challenges and be rather time-consuming. Here we describe MESAFace, a graphical and dynamical interface which provides an intuitive, efficient and quick way to analyze the MESA output. Nature of problem: Find a way to quickly and thoroughly analyze the output of a MESA run, including all the profiles, and have an efficient method to produce graphical representations of the data. Solution method: We created two scripts (to be run consecutively). The first one downloads all the data from a MESA run and organizes the profiles in order of age. All the files are saved as tables or arrays of tables which can then be accessed very quickly by Mathematica. The second script uses the Manipulate function to create a graphical interface which allows the user to choose what to plot from a set of menus and buttons. The information shown is updated in real time. The user can access very quickly all the data from the run under examination and visualize it with plots and tables. Unusual features: Moving the slides in certain regions may cause an error message. This happens when Mathematica is asked to read nonexistent data. The error message, however, disappears when the slides are moved back. This issue does not preclude the good functioning of the interface. Additional comments: The program uses the dynamical capabilities of Mathematica. When the program is opened, Mathematica prompts the user to ”Enable Dynamics”. It is necessary to accept before proceeding. Running time: Depends on the size of the data downloaded, on where the data are stored (hard-drive or web), and on the speed of the computer or network connection. In general, downloading the data may take from a minute to several minutes. Loading directly from the web is slower. For example

  14. MESA: Making Excellent Science Requires More Than Just Scientists

    NASA Astrophysics Data System (ADS)

    Diaz, R.

    2014-05-01

    Supporting successful astronomical missions requires more than brighter minds with a vision. It requires a strong team from a wide variety of disciplines working together towards a common goal: support the Space Telescope Science Institute (STScI) missions and excel while doing it. Here I present the main steps we have taken to meet the challenges ahead, with special attention to the combined effort between scientists and developers, along with an overview of the projects currently under the purview of the Mission Engineering and Science Analysis (MESA) group at the STScI.

  15. The Evolution of ONeMg Cores with MESA

    NASA Astrophysics Data System (ADS)

    Schwab, Josiah; Quataert, Eliot; Bildsten, Lars

    2015-01-01

    We present calculations of the evolution of degenerate cores composed primarily of oxygen, neon, and magnesium which are undergoing compression. We make use of the state-of-the-art MESA stellar evolution code, with updated weak reaction rates from Martinez-Pinedo et al. (2014). We perform a detailed parameter study of the effects a number of quantities, including the accretion rate, magnesium mass fraction, and initial core temperature. We discuss the final fate of these ONeMg cores, focusing on cores formed as a result of the merger of two carbon-oxygen white dwarfs.

  16. Mesa Verde--A Year-Round High School. A Descriptive Report of 1980-81.

    ERIC Educational Resources Information Center

    Housden, Terry; Holmes, Lynda

    Mesa Verde High School was constructed in 1974 and is the last high school built in the San Juan (California) Unified District. It serves students in grades 9 through 12 and has an open enrollment policy. Mesa Verde operates on a year-round schedule with students divided into three tracks. Basically, each track is in session for 9 weeks and then…

  17. MESA/MEP at American River College: Year One Evaluation Report.

    ERIC Educational Resources Information Center

    Lee, Beth S.; And Others

    In 1989, the Mathematics, Engineering, and Science Achievement (MESA)/Minority Engineering Program (MEP) was initiated at American River College. The MESA/MEP program recruits Black, Hispanic, and Native American students and provides assistance, encouragement, and enrichment programs to help them succeed in the fields of mathematics, engineering,…

  18. Ethnographic Evaluation of the MESA Program at a South-Central Phoenix High School.

    ERIC Educational Resources Information Center

    Jaramillo, James A.

    MESA (Mathematics, Engineering, and Science Achievement) is a program designed to increase the number of underrepresented ethnic groups in professions related to mathematics, engineering, and the physical sciences. This paper describes and evaluates the MESA program at Jarama High School, Phoenix (Arizona), using informal interviews and…

  19. The MESA Way: A Success Story of Nurturing Minorities for Math/Science-Based Careers.

    ERIC Educational Resources Information Center

    Somerton, Wilbur H.; And Others

    Significant steps have been taken by the Mathematics, Engineering, Science Achievement (MESA) project since its formation in 1970. The founders of MESA began a campaign, first in high schools, and later in middle and elementary schools, to convince educators, parents, and students of the importance of raising standards for the minority children…

  20. Rotarians Respond to the Recreation Rights of Disabled Individuals in Mesa, Arizona.

    ERIC Educational Resources Information Center

    Bliss, George, II; And Others

    1983-01-01

    Presents Rotary Park in Mesa (Arizona), designed to be accessible to the disabled and developed by the Mesa Rotary Club, the city parks and recreation department, and county and federal agencies. Describes the park's origins, development, and special recreational equipment, including a physical fitness trail and multipurpose playing areas. (RW)

  1. Remotely sensed limonite anomaly on Lordsburg Mesa, New Mexico: possible implications for uranium deposits ( USA).

    USGS Publications Warehouse

    Raines, G.L.; Erdman, J.A.; McCarthy, J.H.; Reimer, G.M.

    1985-01-01

    We have identified a large, anomalously limonitic area in Cenozoic gravels on Lordsburg Mesa near Lordsburg, New Mexico, using Landsat images. Our interpretation of the geophysical and geochemical data suggests the exploration hypothesis that the Lordsburg Mesa limonite anomaly is the surface expression of a chemical trap that may contain concentrations of uranium similar to calcrete-uranium deposits. -from Authors

  2. MESA: Supporting Teaching and Learning about the Marine Environment--Primary Science Focus

    ERIC Educational Resources Information Center

    Preston, Christine

    2010-01-01

    The Marine Education Society of Australasia (MESA) Inc. is a national organisation of marine educators that aims to bring together people interested in the study and enjoyment of coastal and marine environments. MESA representatives and members organise education and interpretation activities in support of schools and communities during a number…

  3. 76 FR 22075 - Divide Ranger District, Rio Grande National Forest; CO; Black Mesa Vegetation Management Project

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-20

    ... Vegetation Management Project AGENCY: Forest Service, USDA. ACTION: Notice of intent to prepare an... Mesa Vegetation Management Project Public Comment. FOR FURTHER INFORMATION CONTACT: Diana McGinn at 719... for Action The purpose and need for the Black Mesa Vegetation Management Project is move...

  4. Gravity and magnetic study of the Pahute Mesa and Oasis Valley region, Nye County, Nevada

    SciTech Connect

    Dixon, G.L.; Fridrich, C.J.; Hildenbrand, T.G.; Laczniak, R.J.; Mankinen, E.A.; McKee, E.H.

    1999-08-31

    Regional gravity and aeromagnetic maps reveal the existence of deep basins underlying much of the southwestern Nevada volcanic field, approximately 150 km northwest of Las Vegas. These maps also indicate the presence of prominent features (geophysical lineaments) within and beneath the basin fill. Detailed gravity surveys were conducted in order to characterize the nature of the basin boundaries, delineate additional subsurface features, and evaluate their possible influence on the movement of ground water. Geophysical modeling of gravity and aeromagnetic data indicates that many of the features may be related to processes of caldera formation. Collapse of the various calderas within the volcanic field resulted in dense basement rocks occurring at greater depths within caldera boundaries. Modeling indicates that collapse occurred along faults that are arcuate and steeply dipping. There are indications that the basement in the western Pahute Mesa - Oasis Valley region consists predominantly of granitic and/or fine-grained siliceous sedimentary rocks that may be less permeable to ground-water flow than the predominantly fractured carbonate rock basement to the east and southeast of the study area. The northeast-trending Thirsty Canyon lineament, expressed on gravity and basin thickness maps, separates dense volcanic rocks on the northwest from less dense intracaldera accumulations in the Silent Canyon and Timber Mountain caldera complexes. The sources of the lineament is an approximately 2-km wide ring fracture system with step-like differential displacements, perhaps localized on a pre-existing northeast-trending Basin and Range fault. Due to vertical offsets, the Thirsty Canyon faults zone probably juxtaposes rock types of different permeability and, thus, it may act as a barrier to ground-water flow and deflect flow from Pahute Mesa along its flanks toward Oasis Valley. Within the Thirsty Canyon fault zone, highly fractured rocks may serve also as a conduit

  5. Gravity and magnetic study of the Pahute Mesa and Oasis Valley region, Nye County, Nevada

    USGS Publications Warehouse

    Mankinen, Edward A.; Hildenbrand, Thomas G.; Dixon, Gary L.; McKee, Edwin H.; Fridrich, Christopher J.; Laczniak, Randell J.

    1999-01-01

    Regional gravity and aeromagnetic maps reveal the existence of deep basins underlying much of the southwestern Nevada volcanic field, approximately 150 km northwest of Las Vegas. These maps also indicate the presence of prominent features (geophysical lineaments) within and beneath the basin fill. Detailed gravity surveys were conducted in order to characterize the nature of the basin boundaries, delineate additional subsurface features, and evaluate their possible influence on the movement of ground-water. Geophysical modeling of gravity and aeromagnetic data indicates that many of the features may be related to processes of caldera formation. Collapse of the various calderas within the volcanic field resulted in dense basement rocks occurring at greater depths within caldera boundaries. Modeling indicates that collapse occurred along faults that are arcuate and steeply dipping. There are indications that the basement in the western Pahute Mesa - Oasis Valley region consists predominantly of granitic and/or fine-grained siliceous sedimentary rocks that may be less permeable to groundwater flow than the predominantly fractured carbonate rock basement to the east and southeast of the study area. The northeast-trending Thirsty Canyon lineament, expressed on gravity and basin thickness maps, separates dense volcanic rocks on the northwest from less dense intracaldera accumulations in the Silent Canyon and Timber Mountain caldera complexes. The source of the lineament is an approximately 2-km wide ring fracture system with step-like differential displacements, perhaps localized on a pre-existing northeast-trending Basin and Range fault. Due to vertical offsets, the Thirsty Canyon fault zone probably juxtaposes rock types of different permeability and, thus, it may act as a barrier to ground-water flow and deflect flow from Pahute Mesa along its flanks toward Oasis Valley. Within the Thirsty Canyon fault zone, highly fractured rocks may serve also as a conduit

  6. Modeling Events in the Lower Imperial Valley Basin

    NASA Astrophysics Data System (ADS)

    Tian, X.; Wei, S.; Zhan, Z.; Fielding, E. J.; Helmberger, D. V.

    2010-12-01

    The Imperial Valley below the US-Mexican border has few seismic stations but many significant earthquakes. Many of these events, such as the recent El Mayor-Cucapah event, have complex mechanisms involving a mixture of strike-slip and normal slip patterns with now over 30 aftershocks with magnitude over 4.5. Unfortunately, many earthquake records from the Southern Imperial Valley display a great deal of complexity, ie., strong Rayleigh wave multipathing and extended codas. In short, regional recordings in the US are too complex to easily separate source properties from complex propagation. Fortunately, the Dec 30 foreshock (Mw=5.9) has excellent recordings teleseismically and regionally, and moreover is observed with InSAR. We use this simple strike-slip event to calibrate paths. In particular, we are finding record segments involving Pnl (including depth phases) and some surface waves (mostly Love waves) that appear well behaved, ie., can be approximated by synthetics from 1D local models and events modeled with the Cut-and-Paste (CAP) routine. Simple events can then be identified along with path calibration. Modeling the more complicated paths can be started with known mechanisms. We will report on both the aftershocks and historic events.

  7. MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA): BINARIES, PULSATIONS, AND EXPLOSIONS

    SciTech Connect

    Paxton, Bill; Bildsten, Lars; Cantiello, Matteo; Marchant, Pablo; Langer, N.; Schwab, Josiah; Bauer, Evan B.; Dessart, Luc; Farmer, R.; Timmes, F. X.; Hu, H.; Townsend, R. H. D.; Townsley, Dean M.

    2015-09-15

    We substantially update the capabilities of the open-source software instrument Modules for Experiments in Stellar Astrophysics (MESA). MESA can now simultaneously evolve an interacting pair of differentially rotating stars undergoing transfer and loss of mass and angular momentum, greatly enhancing the prior ability to model binary evolution. New MESA capabilities in fully coupled calculation of nuclear networks with hundreds of isotopes now allow MESA to accurately simulate the advanced burning stages needed to construct supernova progenitor models. Implicit hydrodynamics with shocks can now be treated with MESA, enabling modeling of the entire massive star lifecycle, from pre-main-sequence evolution to the onset of core collapse and nucleosynthesis from the resulting explosion. Coupling of the GYRE non-adiabatic pulsation instrument with MESA allows for new explorations of the instability strips for massive stars while also accelerating the astrophysical use of asteroseismology data. We improve the treatment of mass accretion, giving more accurate and robust near-surface profiles. A new MESA capability to calculate weak reaction rates “on-the-fly” from input nuclear data allows better simulation of accretion induced collapse of massive white dwarfs and the fate of some massive stars. We discuss the ongoing challenge of chemical diffusion in the strongly coupled plasma regime, and exhibit improvements in MESA that now allow for the simulation of radiative levitation of heavy elements in hot stars. We close by noting that the MESA software infrastructure provides bit-for-bit consistency for all results across all the supported platforms, a profound enabling capability for accelerating MESA's development.

  8. Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions

    NASA Astrophysics Data System (ADS)

    Paxton, Bill; Marchant, Pablo; Schwab, Josiah; Bauer, Evan B.; Bildsten, Lars; Cantiello, Matteo; Dessart, Luc; Farmer, R.; Hu, H.; Langer, N.; Townsend, R. H. D.; Townsley, Dean M.; Timmes, F. X.

    2015-09-01

    We substantially update the capabilities of the open-source software instrument Modules for Experiments in Stellar Astrophysics (MESA). MESA can now simultaneously evolve an interacting pair of differentially rotating stars undergoing transfer and loss of mass and angular momentum, greatly enhancing the prior ability to model binary evolution. New MESA capabilities in fully coupled calculation of nuclear networks with hundreds of isotopes now allow MESA to accurately simulate the advanced burning stages needed to construct supernova progenitor models. Implicit hydrodynamics with shocks can now be treated with MESA, enabling modeling of the entire massive star lifecycle, from pre-main-sequence evolution to the onset of core collapse and nucleosynthesis from the resulting explosion. Coupling of the GYRE non-adiabatic pulsation instrument with MESA allows for new explorations of the instability strips for massive stars while also accelerating the astrophysical use of asteroseismology data. We improve the treatment of mass accretion, giving more accurate and robust near-surface profiles. A new MESA capability to calculate weak reaction rates “on-the-fly” from input nuclear data allows better simulation of accretion induced collapse of massive white dwarfs and the fate of some massive stars. We discuss the ongoing challenge of chemical diffusion in the strongly coupled plasma regime, and exhibit improvements in MESA that now allow for the simulation of radiative levitation of heavy elements in hot stars. We close by noting that the MESA software infrastructure provides bit-for-bit consistency for all results across all the supported platforms, a profound enabling capability for accelerating MESA's development.

  9. Surface ruptures east of Mexicali from the Imperial Valley earthquake of 15 October 1979

    SciTech Connect

    Haar, S.V.

    1982-04-01

    The title earthquake registered a local Richter magnitude of 6.6 and 7.0 at Berkeley. The observations described here were made on 16 October. The earthquake caused slumps and fissures along an unimproved road, a crack in a paved highway, shattered curbs of the concrete median strips of another highway, structural damage to an overpass, and cracks and offsets from 1-3 cm in masonry walkways and parking areas. The paper briefly reviews implications of these surface fractures for the projected 30-year geothermal development in the Salton Trough. 10 references, 6 figures.

  10. The Mesa Verde outcrop: Seismic modeling, processing, and interpretation

    SciTech Connect

    Bourgeois, A.; Dequirez, P.Y.; Etienne, G.; Mace, D.; Richard, V.

    1994-12-31

    For a realistic geological model a 2D numerical elastic modeling is carried out. The objectives is, first, a better understanding of the information content of reflection seismic data and, second, to provide synthetic data for testing and evaluating the efficiency of processing and inversion techniques under known conditions. Of particular interest are the small-scale heterogeneities in view of reservoir delineation and characterization. The geologic model is constructed from the Campanian cross-section of the Mesa Verde outcrop (Colorado, USA). A subsurface seismic model buried in a 1D background medium is defined from the 2D Mesa Verde geologic model by assigning P-wave and S-wave velocities and densities to each geologic facies. This seismic model is used as input for a fully elastic seismic simulating a realistic marine survey of 280 shots. The synthetic seismograms are calculated by a finite-difference method. The data are processed in a conventional way; then a target-related post-processing is performed including stratigraphic inversion. Finally, a geologic significance is given to waveform and amplitude variations in the estimated P-impedances.

  11. MTF comparisons between mesa and planar focal plane detector structures

    NASA Astrophysics Data System (ADS)

    Perley, Mitchell; Wehner, Justin; Buell, Dave; Micali, Jason; McCorkle, Joe; Rehfield, Mark; Williams, Dave; Dixon, Andrew; Malone, Neil

    2013-09-01

    Raytheon Vision Systems (RVS) has developed scanning, high-speed (<3klps), all digital, with on-chip Analog-to-Digital Conversion (ADC), mid-wave infrared (MWIR 3-5mm) focal plane arrays (FPA) with excellent modulation transfer function (MTF) performance. Using secondary ion mass spectrometry (SIMS) data and detailed models of the mesa geometry, RVS modeled the predicted detector MTF performance of detectors. These detectors have a mesa structure and geometry for improved MTF performance compared to planar HgCdTe and InSb detector structures and other similar detector structures such as nBn. The modeled data is compared to measured MTF data obtained from edge spread measurements and shows good agreement, Figure 1. The measured data was obtained using a custom advanced test set with 1µm precision alignment and automatic data acquisition for report generation in less than five minutes per FPA. The measured MTF values of 83 unique parts, Figure 2, had a standard deviation of 0.0094 and a mean absolute deviation of 0.0066 at half Nyquist frequency, showing excellent process repeatability and a design that supports high MTF with good repeatability.

  12. Progress report on Black Mesa monitoring program, 1984

    USGS Publications Warehouse

    Hill, G.W.

    1985-01-01

    The N aquifer is an important source of water in the 5,400 square-mile Black Mesa area on the Navajo and Hopi Indian Reservations. The project is designed to monitor long-term effects on the ground-water resources of the mesa as a result of withdrawals from the aquifer by a strip-mining operation. Withdrawals from the N aquifer by the mine have increased from 95 acre-ft in 1968 to more than 4,000 acre-ft in 1984. Water levels in the confined area of the aquifer have declined as much as 75 feet in some municipal and observation wells within about a 15-mile radius of the mine well field. Part of the drawdown in municipal wells is due to local pumpage. Water levels have not declined in wells tapping the unconfined area of the aquifer. Chemical analysis indicate no significant changes in the quality of water from wells that tap the N aquifer or from springs that discharge from several stratigraphic units, including the N aquifer, since pumping began at the mine. (USGS)

  13. Reducing Uncertainty in the Distribution of Hydrogeologic Units within Volcanic Composite Units of Pahute Mesa Using High-Resolution 3-D Resistivity Methods, Nevada Test Site, Nevada

    USGS Publications Warehouse

    Rodriguez, Brian D.; Sweetkind, Don; Burton, Bethany L.

    2010-01-01

    Pahute Mesa within the Calico Hills zeolitic volcanic composite unit (VCU), an important hydrostratigraphic unit in Area 20. The resistivity response was evaluated and compared with existing well data and hydrogeologic unit tops from the current Pahute Mesa framework model. In 2008, the USGS processed and inverted the magnetotelluric data into a 3-D resistivity model. We interpreted nine depth slices and four west-east profile cross sections of the 3-D resistivity inversion model. This report documents the geologic interpretation of the 3-D resistivity model. Expectations are that spatial variations in the electrical properties of the Calico Hills zeolitic VCU can be detected and mapped with 3-D resistivity, and that these changes correlate to differences in rock permeability. With regard to LFA and TCU, electrical resistivity and permeability are typically related. Tuff confining units will typically have low electrical resistivity and low permeability, whereas LFA will have higher electrical resistivity and zones of higher fracture-related permeability. If expectations are shown to be correct, the method can be utilized by the UGTA scientists to refine the hydrostratigraphic unit (HSU) framework in an effort to more accurately predict radionuclide transport away from test areas on Pahute and Rainier Mesas.

  14. Modeling unsaturated-zone flow at Rainier Mesa as a possible analog for a future Yucca Mountain

    SciTech Connect

    Gauthier, J.H.

    1998-01-01

    Rainier Mesa is structurally similar to Yucca Mountain, and receives precipitation similar to the estimated long-term average for Yucca Mountain. Tunnels through the unsaturated zone at Rainier Mesa have encountered perched water and, after the perched water was drained, flow in fractures and faults. Although flow observations have been primarily qualitative, Rainier Mesa hydrology is a potential analog for Yucca Mountain hydrology in a wetter climate. In this paper, a groundwater flow model that has been used in the performance assessment of Yucca Mountain--the weeps model--is applied to Rainier Mesa. The intent is to gain insight in both Rainier Mesa and the weeps flow model.

  15. Geology, geochronology, and geochemistry of basaltic flows of the Cat Hills, Cat Mesa, Wind Mesa, Cerro Verde, and Mesita Negra, central New Mexico

    USGS Publications Warehouse

    Maldonado, F.; Budahn, J.R.; Peters, L.; Unruh, D.M.

    2006-01-01

    The geochronology, geochemistry, and isotopic compositions of basaltic flows erupted from the Cat Hills, Cat Mesa, Wind Mesa, Cerro Verde, and Mesita Negra volcanic centres in central New Mexico indicate that each of these lavas had unique origins and that the predominant mantle involved in their production was an ocean-island basalt type. The basalts from Cat Hills (0.11 Ma) and Cat Mesa (3.0 Ma) are similar in major and trace element composition, but differences in MgO contents and Pb isotopic values are attributed to a small involvement of a lower crustal component in the genesis of the Cat Mesa rocks. The Cerro Verde rock is comparable in age (0.32 Ma) to the Cat Hills lavas, but it is more radiogenic in Sr and Nd, has higher MgO contents, and has a lower La/Yb ratio. This composition is explained by the melting of an enriched mantle source, but the involvement of another crustal component cannot be disregarded. The Wind Mesa rock is characterized by similar age (4.01 Ma) and MgO contents, but it has enriched rare-earth element contents compared with the Cat Mesa samples. These are attributed to a difference in the degree of partial melting of the Cat Mesa source. The Mesita Negra rock (8.11 Ma) has distinctive geochemical and isotopic compositions that suggest a different enriched mantle and that large amounts of a crustal component were involved in generating this magma. These data imply a temporal shift in magma source regions and crustal involvement, and have been previously proposed for Rio Grande rift lavas. ?? 2006 NRC Canada.

  16. Nature and extent of lava-flow aquifers beneath Pahute Mesa, Nevada Test Site

    SciTech Connect

    Prothro, L.B.; Drellack, S.L. Jr.

    1997-09-01

    Work is currently underway within the Underground Test Area subproject of the US Department of Energy/Nevada Operations Office Environmental Restoration Program to develop corrective action plans in support of the overall corrective action strategy for the Nevada Test Site as established in the Federal Facility Agreement and Consent Order (FFACO, 1996). A closure plan is currently being developed for Pahute Mesa, which has been identified in the FFACO as consisting of the Western and Central Pahute Mesa Corrective Action Units. Part of this effort requires that hydrogeologic data be compiled for inclusion in a regional model that will be used to predict a contaminant boundary for these Corrective Action Units. Hydrogeologic maps have been prepared for use in the model to define the nature and extent of aquifers and confining units that might influence the flow of contaminated groundwater from underground nuclear tests conducted at Pahute Mesa. Much of the groundwater flow beneath Pahute Mesa occurs within lava-flow aquifers. An understanding of the distribution and hydraulic character of these important hydrogeologic units is necessary to accurately model groundwater flow beneath Pahute Mesa. This report summarizes the results of a study by Bechtel Nevada geologists to better define the hydrogeology of lava-flow aquifers at Pahute Mesa. The purpose of this study was twofold: (1) aid in the development of the hydrostratigraphic framework for Pahute Mesa, and (2) provide information on the distribution and hydraulic character of lava-flow aquifers beneath Pahute Mesa for more accurate computer modeling of the Western and Central Pahute Mesa Corrective Action Units.

  17. Adaptive PCA based fault diagnosis scheme in imperial smelting process.

    PubMed

    Hu, Zhikun; Chen, Zhiwen; Gui, Weihua; Jiang, Bin

    2014-09-01

    In this paper, an adaptive fault detection scheme based on a recursive principal component analysis (PCA) is proposed to deal with the problem of false alarm due to normal process changes in real process. Our further study is also dedicated to develop a fault isolation approach based on Generalized Likelihood Ratio (GLR) test and Singular Value Decomposition (SVD) which is one of general techniques of PCA, on which the off-set and scaling fault can be easily isolated with explicit off-set fault direction and scaling fault classification. The identification of off-set and scaling fault is also applied. The complete scheme of PCA-based fault diagnosis procedure is proposed. The proposed scheme is first applied to Imperial Smelting Process, and the results show that the proposed strategies can be able to mitigate false alarms and isolate faults efficiently.

  18. Lateral growth of GaN by liquid phase electroepitaxy using mesa-shaped substrate

    NASA Astrophysics Data System (ADS)

    Kambayashi, Daisuke; Takakura, Hiroyuki; Tomita, Masafumi; Iwakawa, Muneki; Mizuno, Yosuke; Maruyama, Takahiro; Naritsuka, Shigeya

    2016-10-01

    GaN microchannel epitaxy (MCE) was performed using a mesa-shaped substrate and liquid phase electroepitaxy. A flat and wide MCE layer was successfully obtained with a rectangular shape, which is formed by ±c-planes on both the top and bottom surfaces. MCE growth proceeded mainly in the lateral direction by the formation of these planes. Cathodoluminescence measurements showed that the laterally grown layers were almost free of dislocations, and that the dislocations in the mesa areas were confined by the vertical sides of the mesas. In the case of inclined sides, the dislocations would be expected to bend and spread into the laterally grown areas.

  19. Formation of a Mesa Shaped Phonon Pulse in Superfluid 4He

    NASA Astrophysics Data System (ADS)

    Adamenko, I. N.; Nemchenko, K. E.; Slipko, V. A.

    2010-05-01

    We present a theory for the formation of a mesa shaped phonon pulse in superfluid 4He. Starting from the hydrodynamic equations of superfluid helium, we obtain the system of equations which describe the evolution of strongly anisotropic phonon systems. Such systems can be created experimentally. The solution of the equations are simple waves, which correspond to second sound in the moving phonon pulse. Using these exact solutions, we describe the expansion of phonon pulses in superfluid helium at zero temperature. This theory gives an explanation for the mesa shape observed in the measured phonon angular distributions. Almost all dependencies of the mesa shape on the system parameters can be qualitatively understood.

  20. MESAFace, a graphical interface to analyze the MESA output

    NASA Astrophysics Data System (ADS)

    Giannotti, M.; Wise, M.; Mohammed, A.

    2013-04-01

    MESA (Modules for Experiments in Stellar Astrophysics) has become very popular among astrophysicists as a powerful and reliable code to simulate stellar evolution. Analyzing the output data thoroughly may, however, present some challenges and be rather time-consuming. Here we describe MESAFace, a graphical and dynamical interface which provides an intuitive, efficient and quick way to analyze the MESA output. Catalogue identifier: AEOQ_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEOQ_v1_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 19165 No. of bytes in distributed program, including test data, etc.: 6300592 Distribution format: tar.gz Programming language: Mathematica. Computer: Any computer capable of running Mathematica. Operating system: Any capable of running Mathematica. Tested on Linux, Mac, Windows XP, Windows 7. RAM: Recommended 2 Gigabytes or more. Supplementary material: Additional test data files are available. Classification: 1.7, 14. Nature of problem: Find a way to quickly and thoroughly analyze the output of a MESA run, including all the profiles, and have an efficient method to produce graphical representations of the data. Solution method: We created two scripts (to be run consecutively). The first one downloads all the data from a MESA run and organizes the profiles in order of age. All the files are saved as tables or arrays of tables which can then be accessed very quickly by Mathematica. The second script uses the Manipulate function to create a graphical interface which allows the user to choose what to plot from a set of menus and buttons. The information shown is updated in real time. The user can access very quickly all the data from the run under examination and visualize it with plots and tables. Unusual features: Moving the

  1. Limnology of Blue Mesa, Morrow Point, and Crystal Reservoirs, Curecanti National Recreation area, during 1999, and a 25-year retrospective of nutrient conditions in Blue Mesa Reservoir, Colorado

    USGS Publications Warehouse

    Bauch, Nancy J.; Malick, Matt

    2003-01-01

    The U.S. Geological Survey and the National Park Service conducted a water-quality investigation in Curecanti National Recreation Area in Colorado from April through December 1999. Current (as of 1999) limnological characteristics, including nutrients, phytoplankton, chlorophyll-a, trophic status, and the water quality of stream inflows and reservoir outflows, of Blue Mesa, Morrow Point, and Crystal Reservoirs were assessed, and a 25-year retrospective of nutrient conditions in Blue Mesa Reservoir was conducted. The three reservoirs are in a series on the Gunnison River, with an upstream to downstream order of Blue Mesa, Morrow Point, and Crystal Reservoirs. Physical properties and water-quality samples were collected four times during 1999 from reservoir, inflow, and outflow sites in and around the recreation area. Samples were analyzed for nutrients, phytoplankton and chlorophyll-a (reservoir sites only), and suspended sediment (stream inflows only). Nutrient concentrations in the reservoirs were low; median total nitrogen and phosphorus concentrations were less than 0.4 and 0.06 milligram per liter, respectively. During water-column stratification, samples collected at depth had higher nutrient concentrations than photic-zone samples. Phytoplankton community and density were affected by water temperature, nutrients, and water residence time. Diatoms were the dominant phytoplankton throughout the year in Morrow Point and Crystal Reservoirs and during spring and early winter in Blue Mesa Reservoir. Blue-green algae were dominant in Blue Mesa Reservoir during summer and fall. Phytoplankton density was highest in Blue Mesa Reservoir and lowest in Crystal Reservoir. Longer residence times and warmer temperatures in Blue Mesa Reservoir were favorable for phytoplankton growth and development. Shorter residence times and cooler temperatures in the downstream reservoirs probably limited phytoplankton growth and development. Median chlorophyll-a concentrations were higher

  2. Archaeological investigations on the Buckboard Mesa Road Project

    SciTech Connect

    Amick, D.S.; Henton, G.H.; Pippin, L.C.

    1991-10-01

    In 1986, the Desert Research Institute (DRI) conducted an archaeological reconnaissance of a new alignment for the Buckboard Mesa Road on the Nevada Test Site for the Department of Energy (DOE). During this reconnaissance, several archaeological sites of National Register quality were discovered and recorded including a large quarry, site 26Ny4892, and a smaller lithic scatter, site 26Ny4894. Analysis of the debitage at 26Ny4892 indicates that this area was used primarily as a quarry for relatively small cobbles of obsidian found in the alluvium. Lithic reduction techniques used here are designed for efficiently reducing small pieces of toolstone and are oriented towards producing flake blanks from small cores and bifacially reducing exhausted cores. Projectile point cross references indicate that the area has seen at least casual use for about 10,000 years and more sustained use for the last 3,000 years. Initial obsidian hydration measurements indicate sustained use of the quarry for about the last 3,000 years although the loci of activities appear to change over time. Based on this study, the DRI recommends that quarrying activities in the area of 26Ny4892 are sufficiently sampled and that additional investigations into that aspect of prehistoric activity in the area are not necessary. This does not apply to other aspects of prehistoric use. DRI recommends that preconstruction surveys continue to identify nonquarrying, prehistoric utilization of the area. With the increased traffic on the Buckboard Mesa Road, there is a greater potential for vandalism to sites of National Register-quality located near the road. The DRI recommends that during the orientation briefing the workers at the Test Site be educated about the importance of cultural resources and the need for their protection. 202 refs., 41 figs., 52 tabs.

  3. 77 FR 72968 - Revisions to the California State Implementation Plan, for Imperial County, Placer County and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-07

    ... County and Ventura County Air Pollution Control Districts AGENCY: Environmental Protection Agency (EPA... Imperial County Air Pollution Control District (ICAPCD), Placer County Air Pollution Control District (PCAPCD) and Ventura County Air Pollution Control District (PCAPCD) portions of the California...

  4. Imperial County geothermal development quarterly report, July 1-September 30, 1983

    SciTech Connect

    Not Available

    1983-10-01

    The highlights of geothermal development in Imperial County during July, August, and September 1983 are discussed. Topics include the status of geothermal development projects in the county, geothermal staff activities and research projects, and other geothermal-related topics.

  5. SI Units to be Used in Place of Imperial Units and Old Metric Units

    ERIC Educational Resources Information Center

    Australian Science Teachers Journal, 1975

    1975-01-01

    A table lists the following quantities in imperial units, old metric units, and SI units: mass, force, energy, torque, power, pressure, temperature, thermal conductivity, frequency, dynamic viscosity, and kinematic viscosity. (MLH)

  6. The emission mechanism of THz electromagnetic waves from Bi2212 mesa device

    NASA Astrophysics Data System (ADS)

    Watanabe, Chiharu; Minami, Hidetoshi; Kitamura, Takeo; Kashiwagi, Takanari; Klemm, Richard; Kadowaki, Kazuo

    From the detailed study of the severe temperature inhomogeneity of the Bi2212 IJJ mesa structure often forming ``hot-spot'' at relatively higher bias current region, while the electromagnetic waves are emitted, multi terminal potential measurement of the mesa device has revealed that the equipotential part of the mesa can only give universal ac-Josephson relationship between the potential difference and the frequency measured by the FT-IR spectrometer, and it is violated as the potential is measured in the region where the hot-spot is formed. This means that the deviation of the emission frequency from the ac-Josephson effect comes from a gradient of the electrical potential distribution. This strongly suggests that the electromagnetic waves at THz frequency may be generated in the superconducting part of the mesa, where the static electric potential is uniform, satisfying the ac-Josephson relation universally no matter how much temperature gradient is.

  7. Mesa-type patterns in the one-dimensional Brusselator and their stability

    NASA Astrophysics Data System (ADS)

    Kolokolnikov, T.; Erneux, T.; Wei, J.

    2006-02-01

    The Brusselator is a generic reaction-diffusion model for a tri-molecular chemical reaction. We consider the case when the input and output reactions are slow. In this limit, we show the existence of K-periodic, spatially bi-stable structures, mesas, and study their stability. Using singular perturbation techniques, we find a threshold for the stability of K mesas. This threshold occurs in the regime where the exponentially small tails of the localized structures start to interact. By comparing our results with Turing analysis, we show that, in the generic case, a Turing instability is followed by a slow coarsening process whereby logarithmically many mesas are annihilated before the system reaches a steady equilibrium state. We also study a “breather”-type instability of a mesa, which occurs due to a Hopf bifurcation. Full numerical simulations are shown to confirm the analytical results.

  8. Dislocation Reduction in HgCdTe Mesa Structures Formed on CdTe/Si

    NASA Astrophysics Data System (ADS)

    Simingalam, Sina; Pattison, James; Chen, Yuanping; Wijewarnasuriya, Priyalal; Rao, Mulpuri V.

    2016-09-01

    Mercury cadmium telluride (MCT) epilayers have been grown on CdTe/Si using molecular beam epitaxy and 8- μm-deep mesa structures formed using plasma etching. Following previous work done on etching mesas and subjecting material to thermal cycle annealing, we set out to determine the limits and underlying physics of dislocation reduction in mesa-etched and annealed MCT. This paper describes the dependence of dislocation reduction on anneal time, cycle annealing, temperature, and etch depth. We show dislocation density reduction below 3 × 105 cm-2 in 10- μm-wide, long-bar mesas along the [0bar{1}1] orientation with only a 5-min anneal at 400°C.

  9. Application of the MESA reactive hydrocode to space vehicle explosive ordnance devices

    NASA Technical Reports Server (NTRS)

    Goldstein, Selma

    1993-01-01

    The construction of detailed computational models of the dynamic behavior of various explosive ordnance devices used on space vehicles is discussed. The following topics are presented in viewgraph form: numerical methods, explosives and detonations, and the MESA computer code.

  10. Electric logging and electrical properties of rocks in Rainier Mesa area, Nevada Test Site, Nevada

    SciTech Connect

    Carroll, R.D.

    1990-01-01

    Electric logs obtained in 33 drill holes in the Rainier Mesa region were evaluated. Aside from the usual character correlations associated with densely welded tuffs, correlations over considerable distances in the ash-fall tuffs may be noted at the horizons of tunnel bed subunits 4J and 3D, and at the contact of tunnel bed subunit 3A and the Tub Spring Member of the Belted Range Tuff. The latter correlation is the most widespread in the bedded tuffs in the area. Although diagnostic in several holes drilled Aqueduct Mesa, the electric log does not universally reflect the top of zeolitization within holes drilled Rainier Mesa. This report, the final in a trilogy of reports dealing with rock properties interpreted chiefly from geophysical logs, examines the electrical measurement obtained in 33 vertical drill holes in the Rainier Mesa area, Nevada. 85 refs., 36 figs., 8 tab.

  11. 8. PARK AVENUE EAST OF CEDAR STREET (400 Block). THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. PARK AVENUE EAST OF CEDAR STREET (400 Block). THE MARCHION HARDWARE BUILDING WAS DESIGNED BY W.W. HISLOP, AND BUILT IN 1895. THE GROUND FLOOR WAS RENOVATED SOME TIME IN THE 1930s. IN THE CENTER IS THE IMPERIAL BLOCK (ca. 1920), AND THE FULLER DRUG COMPANY (1918-1932).THE FULLER SITE WAS OCCUPIED BY THE HIGHLAND THEATER FROM 1932 TO 1972, AND RETAINS MUCH OF THE INTERIOR DECORATION FROM THAT PERIOD - Anaconda Historic District, Park & Commercial Streets, Main Street vicinity, Anaconda, Deer Lodge County, MT

  12. New Permian durhaminid cerioid corals from east-central California

    USGS Publications Warehouse

    Stevens, C.H.; Stone, P.

    2009-01-01

    Permian colonial corals from Artinskian to Kungurian strata in the Conglomerate Mesa area, Inyo Mountains, east-central California, include five new species, one of which is assigned to a new genus. The new taxa are: Malpaisia maceyi n. gen. and n. sp., Pararachnastraea bellula n. sp., P. delicata n. sp., P. owensensis n. sp., and Cordillerastraea inyoensis n. sp. These species, several of which compare most closely with other Artinskian and Kungurian species from eastern Nevada and northern Mexico, represent three distinct stocks that differentiated on an isolated submarine uplift offshore from the main part of the Cordilleran carbonate shelf.

  13. Geohydrology of Pahute Mesa-3 test well, Nye County, Nevada

    SciTech Connect

    Kilroy, K.C.; Savard, C.S.

    1997-02-01

    The Pahute Mesa-3 test well is on Pahute Mesa about 3 miles west of the Nevada Test Site and 20 miles northeast of Oasis Valley near Beatty, Nevada. The well was drilled for the U.S. Department of Energy Radionuclide Migration Program to monitor conditions near the western edge of the Nevada Test Site. The well was drilled with conventional rotary methods and an air-foam drilling fluid to a depth of 3,019 feet. A 10.75-inch diameter steel casing was installed to a depth of 1,473 feet. The test well penetrates thick units of non-welded to partly welded ash-flow and air-fall tuff of Tertiary age with several thin layers of densely welded tuff, rhyolite and basalt flows, and breccia. Geophysical logs indicate that fractures are significant in the Tiva Canyon Tuff of the Paintbrush Group and this was confirmed by high flow in this unit during a borehole-flow survey. The geophysical logs also show that the effective porosity in tuffaceous units ranges from 19 to 38 percent and averages 30 percent, and the total porosity ranges from 33 to 55 percent and averages 42 percent. The measured temperature gradient of 1.00 degree Celsius per 100 feet is steep, but is similar to that of other nearby wells, one of which penetrates a buried granite intrusion. Injection tests for six intervals of the well yielded transmissivities that ranged from 3.1 x 10{sup -3} to 25 feet squared per day and hydraulic conductivities that ranged from 6 x 10{sup -5} to 0.12 foot per day. The sum of the transmissivities is 28 feet squared per day and the geometric mean of hydraulic conductivity is 1.7 x 10{sup -3} foot per day. Estimates of storage coefficient range from 2.1 x 10{sup -5} to 3.8 x 10{sup -3}, indicating that the aquifer responded to the injection tests in a confined manner. An aquifer test produced a drawdown of 78 feet during 31 hours of testing at 169 gallons per minute.

  14. Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona

    USGS Publications Warehouse

    Eychaner, James H.

    1983-01-01

    The N aquifer is the main source of water in the 5,400-square-mile Black Mesa area in the Navajo and Hopi Indian Reservations in northeastern Arizona. The N aquifer consists of the Navajo Sandstone and parts of the underlying Kayenta Formation and Wingate Sandstone of Jurassic and Triassic age. Maximum saturated thickness of the aquifer is about 1,050 feet in the northwestern part of the area, and the aquifer thins to extinction to the southeast. Water is under confined conditions in the central 3,300 square miles of the area. To the east, north, and west of Black Mesa, the aquifer is exposed at the surface, and water is unconfined. The aquifer was in equilibrium before about 1965. Recharge of about 13,000 acre-feet per year was balanced primarily by discharge near Moenkopi Wash and Laguna Creek and by evapotranspiration. At least 180 million acre-feet of water was in storage. The estimated average hydraulic conductivity of the aquifer is 0.65 foot per day. The confined storage coefficient is estimated to be about 0.0004 where the aquifer is thickest, and the estimated unconfined storage coefficient ranges from 0.10 to 0.15. Ground-water withdrawals that averaged 5,300 acre-feet per year from 1976 to 1979 have caused water levels to decline in wells in the confined part of the aquifer. Withdrawals include an average of 3,700 acre-feet per year to supply a coal-slurry pipeline from a coal mine on Black Mesa. Six observation wells equipped with water-level recorders have been used to monitor aquifer response. The water level in one well 32 miles south of the mine declined 17 feet from 1972 through 1979 and 3.5 feet during 1979. A mathematical model of the N aquifer was developed and calibrated for equilibrium and nonequilibrium conditions. The model was used in part to improve estimates of aquifer characteristics and the water budget, and it successfully reproduced the observed response of the aquifer through 1979. The model results indicate that about 95 percent of

  15. Geologic map of the Clifton Quadrangle, Mesa County, Colorado

    USGS Publications Warehouse

    Carrara, P.E.

    2001-01-01

    1:24,000-scale geologic mapping in the Clifton 7.5' quadrangle, in support of the USGS Colorado River/I-70 Corridor Cooperative Geologic Mapping Project, provides interpretations of the Quaternary stratigraphy and geologic hazards in this area of the Grand Valley. The Clifton 1:24,000 quadrangle is in Mesa County in western Colorado. Because the map area is dominated by various surficial deposits, the map depicts 16 different Quaternary units. Five prominent river terraces are present in the quadrangle containing gravels deposited by the Colorado River. The map area contains a large landslide deposit on the southern slopes of Mount Garfield. The landslide developed in the Mancos Shale and contains large blocks of the overlying Mesaverde Group. In addition, the landslide is a source of debris flows that have closed I-70 in the past. The major bedrock unit in the quadrangle is the Mancos Shale of Upper Cretaceous age. The map is accompanied by text containing unit descriptions, and sections on geologic hazards (including landslides, piping, gullying, expansive soils, and flooding), and economic geology (including sand and gravel). A table indicates what map units are susceptible to a given hazard. Approximately 20 references are cited at the end of the report.

  16. Geology of the Horse Range Mesa quadrangle, Colorado

    USGS Publications Warehouse

    Cater, Fred W.; Bush, A.L.; Bell, Henry; Withington, C.F.

    1953-01-01

    The Horse Range Mesa quadrangle is one of eighteen 7 1/2-minute quadrangles covering the principal carnotite-producing area of southwestern Colorado. The geology of the quadrangles was mapped by the U.S. Geological Survey for the Atomic Energy Commission as part of a comprehensive study of carnotite deposits. The rocks exposed in the eighteen quadrangles consist of crystalline rocks of pre-Cambrian age and sedimentary rocks that range in age from late Paleozoic to Quaternary. Over much of the area the sedimentary rocks are flat lying, but in places the rocks are disrupted by high-angle faults, and northwest-trending folds. Conspicuous among the folds are large anticlines having cores of intrusive salt and gypsum. Most of the carnotite deposits are confined to the Salt Wash sandstone member of the Jurassic Morrison formation. Within this sandstone, most of the deposits are spottily distributed through an arcuate zone known as the "Uravan Mineral Belt". Individual deposits range in size from irregular masses containing only a few tons of ore to large, tabular masses containing many thousands of tons. The ore consists largely of sandstone selectively impregnated and in part replaced by uranium and vanadium minerals. Most of the deposits appear to be related to certain sedimentary strictures in sandstones of favorable composition.

  17. Resonant Frequency Monitoring at Mesa Arch, Canyonlands National Park

    NASA Astrophysics Data System (ADS)

    Dorsey, A.; Moore, J. R.; Thorne, M. S.; Culp, J.

    2014-12-01

    The national parks of southern Utah are home to a number of spectacular landmarks that draw visitors from across the world. However, there is currently no methodology in place to evaluate the structural health of these structures as they change through time or in the wake of a damaging event. Our study combines in-situ ambient vibration measurements with 3D numerical modeling to monitor the resonance characteristics of Mesa Arch, a prominent arch in Canyonlands National Park. We measure spectral and polarization attributes of ambient vibrations using two broadband seismometers: one placed on the arch and the other located at a distance of ~100 m for reference. Repeat measurements, ranging in duration from 1 hour to 3 days, are aimed at assessing short- and long-term changes in resonance characteristics, which in turn provide evidence of internal mechanical change. Numerical modal analysis, executed by inputting geometric and representative material properties of the arch into 3D modeling software, allows us to match the measured fundamental frequency as well as higher-order modes. Preliminary results suggest minor variations in resonant frequencies are predominantly controlled by thermal effects, i.e. changes in bulk material stiffness as the rock expands and contracts.

  18. Tunneling characteristics for nm-thick mesas consisting of a few intrinsic Josephson junctions

    NASA Astrophysics Data System (ADS)

    Suzuki, Minoru; Ohmaki, Masayuki; Takemura, Ryota; Hamada, Kenji; Watanabe, Takao; Ota, Kensuke; Kitano, Haruhisa; Maeda, Atsutaka

    2008-10-01

    Very thin mesa structures consisting of a few intrinsic Josephson junctions have been fabricated on single crystal surfaces of Bi2Sr2CaCu2O8+δ. In the fabrication procedure, annealing is conducted after the mesa structure is formed by Ar ion milling. Or, the annealing is skipped and, instead, the electrodes to the mesas have been deposited in vacuum immediately after crystals are cleaved. We have attained both uniform current-voltage (I-V) characteristics and small contact resistances, which are usually difficult to obtain at the same time in the case of nm-thick mesa structures. For the mesas thus fabricated, it is found that the Josephson critical current Jc of the top IJJ (the surface junction) is reduced significantly. The reduction of Jc is more significant when the doping level of the crystal used is lower. We argue that this is due to the proximity efiect of the surface junction, in which the top electrode is in close proximity with the Ag or Au film of a thickness of the order of 300 nm. For mesas obtained by this method, the switching probability distribution has been measured. It is found that when the mesa lateral size is larger than 2 μm the switching is unreproducible and lacking systematic temperature dependence. It is also found that escape temperature Tesc and the standard deviation σ for the switching probability distribution exhibits a large deviation from the Kramers' thermal activation theory. When the lateral size is no larger than 2 μm, the switching probability distribution results show coincidence with the theory in the temperature range from 1.3 K to 5 K. Below 0.5 K, the escape temperature tends to saturate and indicates a crossover near 0.5 K from the thermal activation to the macroscopic quantum tunneling.

  19. Eruptive vents for the Burro Mesa Rhyolite, Big Bend National Park, Trans-Pecos Texas

    SciTech Connect

    Holt, G.S.; Parker, D.F. . Dept. of Geology)

    1993-02-01

    Detailed mapping of field relations and flow direction of the Burro Mesa Rhyolite (BMR) have identified vent localities at Burro Mesa, Kit Mountain, Cerro Castellan, Trap Mountain, and Goat Mountain, and the suggest the presence of additional, as yet unlocated, centers of eruption. This work confirms recent interpretations that BMR rocks were not erupted from the Pine Canyon caldera, but were instead erupted from isolated feeder localities in the Burro Mesa-Cerro Castellan area. At the Burro Mesa locality, the BMR contains a lower sparsely-porphyritic lava, a central porphyritic ash-flow tuff, and an upper abundantly-porphyritic lava. At all other mapped localities, only sparsely-porphyritic lava and Wasp Springs Flow Breccia (WSFB) are present. Two vents at Burro Mesa represent sources for separate BMR flows, as well as WSFB, which consists of numerous surge deposits with interbedded ash-flow tuff. Flow directional data suggests a third unlocated vent for abundantly-porphyritic lava in the SE region of Burro Mesa. Flow direction data also suggest that the SW end of Kit Mountain was a source for sparsely-porphyritic lava. A feeder dike at Cerro Castellan cuts up through the WSFB, flaring near the top into a volcanic dome of sparsely-porphyritic lava at the top of the mountain. This cross-cutting relationship was present at most vent localities. Mapping and flow direction data of BMR from vents and other localities suggest that the BMR consists of a discontinuous belt of individual domes, which trend in a southwesterly direction from Burro Mesa to Cerro Castellan.

  20. Estimation of Groundwater Recharge at Pahute Mesa using the Chloride Mass-Balance Method

    SciTech Connect

    Cooper, Clay A; Hershey, Ronald L; Healey, John M; Lyles, Brad F

    2013-07-01

    Groundwater recharge on Pahute Mesa was estimated using the chloride mass-balance (CMB) method. This method relies on the conservative properties of chloride to trace its movement from the atmosphere as dry- and wet-deposition through the soil zone and ultimately to the saturated zone. Typically, the CMB method assumes no mixing of groundwater with different chloride concentrations; however, because groundwater is thought to flow into Pahute Mesa from valleys north of Pahute Mesa, groundwater flow rates (i.e., underflow) and chloride concentrations from Kawich Valley and Gold Flat were carefully considered. Precipitation was measured with bulk and tipping-bucket precipitation gauges installed for this study at six sites on Pahute Mesa. These data, along with historical precipitation amounts from gauges on Pahute Mesa and estimates from the PRISM model, were evaluated to estimate mean annual precipitation. Chloride deposition from the atmosphere was estimated by analyzing quarterly samples of wet- and dry-deposition for chloride in the bulk gauges and evaluating chloride wet-deposition amounts measured at other locations by the National Atmospheric Deposition Program. Mean chloride concentrations in groundwater were estimated using data from the UGTA Geochemistry Database, data from other reports, and data from samples collected from emplacement boreholes for this study. Calculations were conducted assuming both no underflow and underflow from Kawich Valley and Gold Flat. Model results estimate recharge to be 30 mm/yr with a standard deviation of 18 mm/yr on Pahute Mesa, for elevations >1800 m amsl. These estimates assume Pahute Mesa recharge mixes completely with underflow from Kawich Valley and Gold Flat. The model assumes that precipitation, chloride concentration in bulk deposition, underflow and its chloride concentration, have been constant over the length of time of recharge.

  1. East Africa

    NASA Technical Reports Server (NTRS)

    2002-01-01

    This image shows the East African nations of Ethiopia, Eritrea, and Somalia, as well as portions of Kenya, Sudan, Yemen, and Saudi Arabia. Dominating the scene are the green Ethiopian Highlands. With altitudes as high as 4,620 meters (15,157 feet), the highlands pull moisture from the arid air, resulting in relatively lush vegetation. In fact, coffee-one of the world's most prized crops-originated here. To the north (above) the highlands is Eritrea, which became independent in 1993. East (right) of Ethiopia is Somalia, jutting out into the Indian Ocean. The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) captured this true-color image on November 29, 2000. Provided by the SeaWiFS Project, NASA/Goddard Space Flight Center, and ORBIMAGE

  2. Middle East

    SciTech Connect

    Hemer, D.O.; Mason, J.F.; Hatch, G.C.

    1981-10-01

    Petroleum production in Middle East countries during 1980 totaled 6,747,719,000 bbl or an average rate of 18,436,390,000 bbl/d, down 13.9% from 1979. Increases were in Saudi Arabia and Syria. Significant decreases occurred in Iraq, Iran, Kuwait, and Turkey. New discoveries were made in Abu Dhabi, Iran, Saudi Arabia, Sharjah, and Oman. New areas were explored in Bahrain, Oman, Syria, and Yemen. 9 figures, 16 tables.

  3. Public health assessment for Stoker Company, Imperial, Imperial County, California, Region 9. Cerclis No. CAD066635442. Preliminary report

    SciTech Connect

    Not Available

    1994-01-06

    Stoker Company is a pesticide dealer and crop dusting loading facility located in the County of Imperial, approximately 25 miles from the Mexican border. The 26-acre site is barren with no vegetation. Operations at the facility, beginning in 1966, have caused the surface soil over much of the site to be contaminated with pesticides. Some of the contaminated surface soil has blown off-site and impacted nearby surface soil and surface water. This preliminary public health assessment evaluated the potential for adverse health effects to occur in five populations identified as being impacted by contaminants. The impacted populations include: (1) on-site workers; (2) the family formerly living on the neighboring D K property; (3) the D K Duck Hunting Club members; (4) individuals using untreated surface water for drinking and/or other domestic purposes; and (5) individuals living or working near crop dusting operations. Based on this assessment, Stoker Company is considered to pose a public health hazard because long-term exposure to site-related contaminants may cause adverse health effects.

  4. Homoepitaxial and Heteroepitaxial Growth on Step-Free SiC Mesas

    NASA Technical Reports Server (NTRS)

    Neudeck, Philip G.; Powell, J. Anthony

    2004-01-01

    This article describes the initial discovery and development of new approaches to SiC homoepitaxial and heteroepitaxial growth. These approaches are based upon the previously unanticipated ability to effectively supress two-dimensional nucleation of 3C-SiC on large basal plane terraces that form between growth steps when epitaxy is carried out on 4H- and 6H-SiC nearly on-axis substrates. After subdividing the growth surface into mesa regions, pure stepflow homoeptixay with no terrace nucleation was then used to grow all existing surface steps off the edges of screw-dislocation-free mesas, leaving behind perfectly on-axis (0001) basal plane mesa surfaces completely free of atomic-scale steps. Step-free mesa surfaces as large as 0.4 mm x 0.4 mm were experimentally realized, with the yield and size of step-free mesas being initally limited by substrate screw dislocations. Continued epitaxial growth following step-free surface formation leads to the formation of thin lateral cantilevers that extend the step-free surface area from the top edge of the mesa sidewalls. By selecting a proper pre-growth mesa shape and crystallographic orientation, the rate of cantilever growth can be greatly enhanced in a web growth process that has been used to (1) enlarge step-free surface areas and (2) overgrow and laterally relocate micropipes and screw dislocations. A new growth process, named step-free surface heteroepitaxy, has been developed to achieve 3C-SiC films on 4H- and 6H-SiC substrate mesas completely free of double positioning boundary and stacking fault defects. The process is based upon the controlled terrace nucleation and lateral expansion of a single island of 3C-SiC across a step-free mesa surface. Experimental results indicate that substrateepilayer lattice mismatch is at least partially relieved parallel to the interface without dislocations that undesirably thread through the thickness of the epilayer. These results should enable realization of improved Si

  5. NTS (Nevada Test Site) Mesa recharge study FY 1989: Letter report

    SciTech Connect

    Lyles, B F; Mihevc, T M

    1990-03-01

    Pahute Mesa is a large geomorphic feature that is located in Areas 19 and 20 of the Nevada Test Site (NTS) and a portion of the Nellis Air Force Range. The identification of radionuclide migration at the U20n site has resulted in an increased interest in the hydrology of Pahute Mesa. An important aspect of groundwater studies is to estimate groundwater recharge from precipitation. Although some meteorological data have been collected on Pahute Mesa, they are not sufficient for making these recharge estimates. The elevation of Pahute Mesa that lies within the boundaries of the NTS ranges from under 6,000 feet to over 7,000 feet. Accompanying these elevation changes is a variety of plant communities. Vegetation in areas of low elevation is dominated by sagebrush and pinyon/juniper at the higher elevation. Communities of Gambel oak are interspersed with pinyon/juniper. Varying plant communities on Pahute Mesa are indicative of the nonuniformity of precipitation and soil types. To understand the mechanisms that lead to recharge, it is necessary to know the spatial as well as temporal variation in precipitation. At the same time, the conditions in the soil need to be monitored to determine if the precipitation is, in fact, infiltrating to the critical depth needed to attain groundwater recharge. These areas of study are covered in this report. 8 figs., 4 tabs.

  6. CFD Growth of 3C-SiC on 4H/6H Mesas

    NASA Technical Reports Server (NTRS)

    Neudeck, Philip G.; Trunek, Andrew J.; Spry, David J.; Powell, J. Anthony; Du, Hui; Skowronski, Marek; Huang, XianRong; Dudley, Michael

    2006-01-01

    This article describes growth and characterization of the highest quality reproducible 3C-SiC heteroepitaxial films ever reported. By properly nucleating 3C-SiC growth on top of perfectly on-axis (0001) 4H-SiC mesa surfaces completely free of atomic scale steps and extended defects, growth of 3C-SiC mesa heterofilms completely free of extended crystal defects can be achieved. In contrast, nucleation and growth of 3C-SiC mesa heterofilms on top of 4H-SiC mesas with atomic-scale steps always results in numerous observable dislocations threading through the 3C-SiC epilayer. High-resolution X-ray diffraction and transmission electron microscopy measurements indicate non-trivial in-plane lattice mismatch between the 3C and 4H layers. This mismatch is somewhat relieved in the step-free mesa case via misfit dislocations confined to the 3C/4H interfacial region without dislocations threading into the overlying 3C-SiC layer. These results indicate that the presence or absence of steps at the 3C/4H heteroepitaxial interface critically impacts the quality, defect structure, and relaxation mechanisms of single-crystal heteroepitaxial 3C-SiC films.

  7. CVD Growth of 3C-SiC on 4H/6H Mesas

    SciTech Connect

    Neudeck,P.; Trunek, A.; Spry, D.; Powell, J.; Du, H.; Skowronski, M.; Huang, X.; Dudley, M.

    2006-01-01

    This article describes growth and characterization of the highest quality reproducible 3C-SiC heteroepitaxial films ever reported. By properly nucleating 3C-SiC growth on top of perfectly on-axis (0001) 4H-SiC mesa surfaces completely free of atomic scale steps and extended defects, growth of 3C-SiC mesa heterofilms completely free of extended crystal defects can be achieved. In contrast, nucleation and growth of 3C-SiC mesa heterofilms on top of 4H-SiC mesas with atomic-scale steps always results in numerous observable dislocations threading through the 3C-SiC epilayer. High-resolution X-ray diffraction (HRXRD) and high resolution cross-sectional transmission electron microscopy (HRXTEM) measurements indicate non-trivial, in-plane, lattice mismatch between the 3C and 4H layers. This mismatch is somewhat relieved in the step-free mesa case via misfit dislocations confined to the 3C/4H interfacial region without dislocations threading into the overlying 3C-SiC layer. These results indicate that the presence or absence of steps at the 3C/4H heteroepitaxial interface critically impacts the quality, defect structure, and relaxation mechanisms of single-crystal heteroepitaxial 3C-SiC films.

  8. [Foreigners and lepers as strangers in early modern imperial towns].

    PubMed

    Dross, Fritz; Kinzelbach, Annemarie

    2011-01-01

    This paper provides insight into interdependent processes by which leprosy and foreignness were constructed in early modern Germany. The results are based on a case study and further source-samples from Imperial towns of the Swabian and Franconian district. As it seems the early modern period was characterized by an ambivalent attitude towards lepers resulting in a variety of ways of inclusion and of exclusion for these persons: The separation from certain forms of social life in the towns (and in the villages belonging to the respective territory) followed the "suspicion" by other inhabitants caused by physical "signs" and the confirmed diagnoses of leprosy by medical experts. Such alienation from one community was juxtaposed by a right to enter the towns in rather specific circumstances as group of alms-beggars or part of a festive community and to join the community of leprosaria. The admission to such houses on the other hand was associated with the status of a burgher, a status, however, which could not be gained by everybody and was not fixed for life but was flexible. We found evidence that the status of leprosarium-"burgher" could be negotiated, interchanged, abandoned by lepers or be granted, refused, denied, suspended by the authorities--temporarily and permanently. By such means affiliation and foreignness were constructed. Preliminary analysis of numbers at ceremonies suggest that a large number of lepers was mobile--whether voluntarily or forced has still to be found out. And they represented the double fold estranged who, albeit, were temporarily included into the celebrating or commemorating community. Such forms of inclusion of the excluded, on the other hand, caused suspicion of simulation which became increasingly the preoccupation of the authorities.

  9. Bone deformities and skeletal malformations in the Roman Imperial Age.

    PubMed

    Minozzi, Simona; Catalano, Paola; Pantano, Walter; Caldarini, Carla; Fornaciari, Gino

    2014-01-01

    This paper describes some cases of individuals affected by skeletal deformities resulting in "freak" appearance. The skeletal remains were found during large archaeological excavations in the Roman territory, carried out by the Special Superintendence to the Archeological Heritage of Rome in the last years, dated back to the Imperial Age. The first cases reported are referred to two growth disorders with opposite effects: a case of dwarfism and another of gigantism. The former concerns a young man from the Collatina necropolis with very short and malformed limbs, which allowed a diagnosis of acondroplasic dwarfism, a rare congenital disorder that limits height below 130 cm. The latter case comes from the necropolis of Torre Serpentana in Fidenae, and is instead referred to a young person of very high stature, about 204 cm, suffering from Gigantism, a rare condition which in this case seems to have been linked to a hormonal dysfunction due to a pituitary adenoma. A third case regards a joint disease affecting the vertebral column and causing severe deformities. The skeleton was found in the Collatina necropolis and belongs to an old woman, suffering from ankylosing spondylitis. Finally, the last and very peculiar case is related to an individual recovered in the necropolis of Castel Malnome. The skeletal remains belong to an adult man with a complete fusion of the temporo-mandibular joint, which compromised mastication and caused severe deformation of the maxillofacial complex. These cases are described in detail together with the possible implications that these deformities could have on in the social context. PMID:25702379

  10. Modelling salt finger formation using the Imperial College Ocean Model

    NASA Astrophysics Data System (ADS)

    MacTavish, F. P.; Cotter, C. J.; Piggott, M. D.

    2009-04-01

    We present numerical simulations of salt finger formation produced using the Imperial College Ocean Model (ICOM) which is a finite element model using adaptive meshing. Our aim is to validate the model against published data and to develop the capability to simulate salt finger formation using adaptive meshes. Salt fingering is a form of double-diffusion which occurs because heat diffuses more quickly than salt. When an area of warm, salty water overlies an area of colder, fresher water, an initial perturbation can lead to some of the water from the lower layer moving into the top layer. Its temperature then increases more quickly than its salinity, so that the water is less dense than its surroundings and it will rise up more. This process repeats to form salt fingers, with salt fingers also forming in the downward direction. Salt fingers play a role in oceanic mixing, in particular they are responsible for maintaining thermohaline staircases such as the C-SALT staircase which have been observed extensively, particularly in the tropics. The study of salt fingers could therefore improve our understanding of processes in the ocean, and inform the design of subgrid parameterisations in general circulation models. We used the salt finger formation test case of Oezgoekmen et al (1998) in order to validate ICOM. The formation of salt fingers is modelled by solving the Navier-Stokes equations for a two-dimensional rectangular area of Boussinesq fluid, beginning with two layers of water, the top warm and salty and the bottom cold and fresh, with parameters chosen to match the test case of Oezgoekmen et al (1998). The positions of the interfaces between the fingering layer and the mixed layers as well as the finger growth rate and the kinetic energy are plotted against time. The results are compared with those of Oezgoekmen et al (1998). We present results from structured meshes and preliminary results using adaptive meshing.

  11. 78 FR 18581 - Imperial Valley Solar 1, LLC: Supplemental Notice That Initial Market-Based Rate Filing Includes...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-27

    ... Energy Regulatory Commission Imperial Valley Solar 1, LLC: Supplemental Notice That Initial Market-Based... above-referenced proceeding, of Imperial Valley Solar 1, LLC's application for market-based rate... filings in the above-referenced proceeding(s) are accessible in the Commission's eLibrary system...

  12. 75 FR 45653 - Notice of Re-Opening of Comment Period for the Draft Imperial Sand Dunes Recreation Area...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-03

    ... of the comment period on the Draft Imperial Sand Dunes Recreation Area Management Plan (RAMP) and... written comments on the Draft RAMP/EIS by August 9, 2010. ADDRESSES: You may submit comments at the public... So. 4th St., El Centro, California 92243. Copies of the Draft Imperial Sand Dunes RAMP/EIS...

  13. 77 FR 13591 - Imperial Valley Solar Company (IVSC) 1, LLC; Supplemental Notice That Initial Market-Based Rate...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-07

    ... Energy Regulatory Commission Imperial Valley Solar Company (IVSC) 1, LLC; Supplemental Notice That... supplemental notice in the above-referenced proceeding of Imperial Valley Solar Company (IVSC) 1, LLC's...Library system by clicking on the appropriate link in the above list. They are also available for...

  14. M.E.S.A, not Just a Seat at the Table: a Chicano Geology Student's Experience with Investigative Field Research

    NASA Astrophysics Data System (ADS)

    Ponce-Zepeda, M. M.

    2011-12-01

    The MESA (math, engineering, science achievement) program in California engages educationally disadvantaged students, primarily minority groups, providing the opportunity to excel in math and science and graduate with math-based degrees. MESA at East Los Angeles Community College selected me, a returning 24 year-old Chicano student, for the SCEC (Southern California Earthquake Center) summer internship at Utah State University (USU). The project coordinators assigned me to a group with three other undergraduate geology students from across the continent and from a variety of socioeconomic backgrounds to investigate geothermal systems in the Salton Trough and northern Utah. The peer-driven field work transformed student to investigator by forcing each participant to be responsible for the success of the entire group. In this environment, I rose to expectations along with my fellow interns managing a detailed field notebook, sampling, planning routes, level logger maintenance, and x-ray diffractometer analysis interpretation, among other things. Mentorship from and challenges proposed by the USU project advisor further built on this scaffolding of field experience. First hand fieldwork provides a battery of beneficial skills that many undergraduate geology students, especially at the two- year college level, rarely get an opportunity to participate in. The advantage of including non-traditional students from two- year colleges allows for a dynamic research network nationwide. Key sample collection by the East Los Angeles College (ELAC) Geology Club, a student- run club at an inner city community college, facilitated ongoing examination by collecting mud samples from gryphons and mudpots in the Salton Trough and testing temperature, pH levels, electrical conductivity, and total dissolved solids in the field. The samples were sent back to students at USU for further analysis. This collaborative effort is symbiotic as sharing the sampling responsibility allowed USU to

  15. The preliminary study of autophagy induction of SA and MeSA by confocal

    NASA Astrophysics Data System (ADS)

    Yun, Lijuan; Chen, Wenli

    2010-02-01

    Autophagy appears to be a highly conserved process from unicellular to multicellular eukaryotes which contributes to the equilibrium of intracelluar environment. While it would be harmful to the cells when it is excessive by inducing programmed cell death (PCD). It is a protein degradation process in which cells recycle cytoplasmic contents when subjected to environmental stress conditions or during certain stages of development. Previous studies have demonstrated autophagy can be induced during abiotic or biotic stresses. salicylic acid (SA) and methyl salicytic (MeSA) are endogenous signal molecules. We found SA and MeSA can induce autophagy in Arabidopsis thaliana respectively. While autophagy was not induced by SA or MeSA in tobacco suspension cells under the same concentration and period. The differences in stuctures or physiological states may contribute to the results.

  16. Botanical prospecting for uranium on La Ventana Mesa, Sandoval County, New Mexico

    USGS Publications Warehouse

    Starrett, Wm. H.; Cannon, Helen L.

    1954-01-01

    A botanical sampling program has been completed by the U.S. Geological Survey on La Ventana Mesa, Sandoval County, N. Mex. A uranium-bearing coal in the Allison-Gibson members of the Cretaceous Mesaverde formation crops out in erosional remnants of the mesa.The coal is capped by a well-fractured 65-foot sandstone bed through which roots of a pinyon-juniper forest penetrate. Samples of several hundred branches of trees growing on top of the mesa were collected and analyzed for uranium. The assays ranged from 0.1 part per million to 2.3 ppm uranium in the wood ash. Dead branches, which were found to contain more uranium in the ash than live branches, were sampled where possible. The results have been contoured to indicated probable areas of mineralized coal. Parts of the north butte are recommended as favorable for physical exploration.

  17. 77 FR 53884 - High Mesa Energy, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-04

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission High Mesa Energy, LLC; Supplemental Notice That Initial Market- Based Rate...-referenced proceeding, of High Mesa Energy, LLC's application for market-based rate authority, with...

  18. 75 FR 63488 - Submission for OMB Review; Comment Request; Multi-Ethnic Study of Atherosclerosis (MESA) Event...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-15

    ... Study of Atherosclerosis (MESA) Event Surveillance SUMMARY: Under the provisions of Section 3507(a)(1)(D... Collection: Title: Multi-Ethnic Study of Atherosclerosis (MESA) Event Surveillance. Type of Information... disease (CVD)-- that is, atherosclerosis and other forms of CVD that have not produced signs and...

  19. The Otay Mesa Higher Education Center: An Off-Campus Facility of the Southwestern Community College District. Commission Report.

    ERIC Educational Resources Information Center

    California State Postsecondary Education Commission, Sacramento.

    This report to the California Governor and legislature reviews the proposal submitted by the Southwestern Community College District (SCCD) (California) to establish a state-approved educational center in Otay Mesa, to be known as the Southwestern Community College's Higher Education Center at Otay Mesa. The proposed state-supported center allows…

  20. 75 FR 19422 - Notice of Closure of Airport Mesa/Carizzo Creek Shooting Area in Eastern San Diego County, CA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-14

    ... Bureau of Land Management Notice of Closure of Airport Mesa/Carizzo Creek Shooting Area in Eastern San... as the Airport Mesa/Carrizo Creek shooting area located in eastern San Diego County, California. The closure order prohibits recreational shooting and target practice. The use of firearms will continue to...

  1. 78 FR 26771 - Mesa Wind Power Corporation; Supplemental Notice That Initial Market-Based Rate Filing Includes...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-08

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Mesa Wind Power Corporation; Supplemental Notice That Initial Market-Based... above-referenced proceeding of Mesa Wind Power Corporation's application for market-based rate...

  2. 75 FR 76727 - Red Mesa Wind, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-09

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Red Mesa Wind, LLC; Supplemental Notice That Initial Market-Based Rate... notice in the above-referenced proceeding of Red Mesa Wind, LLC's application for market-based...

  3. Engineering aspects of geothermal development with emphasis on the Imperial Valley of California

    NASA Technical Reports Server (NTRS)

    Goldsmith, M.

    1978-01-01

    This review was prepared in support of a geothermal planning activity of the County of Imperial. Engineering features of potential geothermal development are outlined. Acreage requirements for drilling and powerplants are estimated, as are the costs for wells, fluid transmission pipes, and generating stations. Rough scaling relationships are developed for cost factors as a function of reservoir temperature. Estimates are made for cooling water requirements, and possible sources of cooling water are discussed. Availability and suitability of agricultural wastewater for cooling are emphasized. The utility of geothermal resources for fresh water production in the Imperial Valley is considered.

  4. Bats of Mesa Verde National Park, Colorado: composition, reproduction, and roosting habits.

    USGS Publications Warehouse

    O'Shea, Thomas J.; Cryan, Paul M.; Snider, E. Apple; Valdez, Ernest W.; Ellison, Laura E.; Neubaum, Daniel J.

    2011-01-01

    We determined the bat fauna at Mesa Verde National Park (Mesa Verde) in 2006 and 2007, characterized bat elevational distribution and reproduction, and investigated roosting habits of selected species. We captured 1996 bats of 15 species in mist nets set over water during 120 nights of sampling and recorded echolocation calls of an additional species. The bat fauna at Mesa Verde included every species of bat known west of the Great Plains in Colorado, except the little brown bat (Myotis lucifugus). Some species showed skewed sex ratios, primarily due to a preponderance of males. Thirteen species of bats reproduced at Mesa Verde. Major differences in spring precipitation between the 2 years of our study were associated with differences in reproductive rates and, in some species, with numbers of juveniles captured. Reduced reproductive effort during spring drought will have a greater impact on bat populations with the forecasted increase in aridity in much of western North America by models of global climate change. We radiotracked 46 bats of 5 species to roosts and describe the first-known maternity colonies of spotted bats (Euderma maculatum) in Colorado. All 5 species that we tracked to diurnal roosts relied almost exclusively on rock crevices rather than trees or snags, despite the presence of mature forests at Mesa Verde and the use of trees for roosts in similar forests elsewhere by some of these species. Comparisons with past bat surveys at Mesa Verde and in surrounding areas suggest no dramatic evidence for effects of recent stand-replacing fires on the composition of the bat community.

  5. Structure of the active rift zone and margins of the northern Imperial Valley from Salton Seismic Imaging Project (SSIP) data

    NASA Astrophysics Data System (ADS)

    Livers, A.; Han, L.; Delph, J. R.; White-Gaynor, A. L.; Petit, R.; Hole, J. A.; Stock, J. M.; Fuis, G. S.

    2012-12-01

    First-arrival refraction data were used to create a seismic velocity model of the upper crust across the actively rifting northern Imperial Valley and its margins. The densely sampled seismic refraction data were acquired by the Salton Seismic Imaging Project (SSIP) , which is investigating rift processes in the northern-most rift segment of the Gulf of California extensional province and earthquake hazards at the southern end of the San Andreas Fault system. A 95-km long seismic line was acquired across the northern Imperial Valley, through the Salton Sea geothermal field, parallel to the five Salton Butte volcanoes and perpendicular to the Brawley Seismic Zone and major strike-slip faults. Nineteen explosive shots were recorded with 100 m seismometer spacing across the valley and with 300-500 m spacing into the adjacent ranges. First-arrival travel times were picked from shot gathers along this line and a seismic velocity model was produced using tomographic inversion. Sedimentary basement and seismic basement in the valley are interpreted to be sediment metamorphosed by the very high heat flow. The velocity model shows that this basement to the west of the Brawley Seismic Zone is at ~4-km depth. The basement shallows to ~2-km depth in the active geothermal field and Salton Buttes volcanic field which locally coincide with the Brawley Seismic Zone. At the eastern edge of the geothermal field, the basement drops off again to ~3.5-km depth. The eastern edge of the valley appears to be fault bounded by the along-strike extension of the Sand Hills Fault, an inactive strike-slip fault. The seismic velocities to the east of the fault correspond to metamorphic rock of the Chocolate Mountains, different from the metamorphosed basement in the valley. The western edge of the valley appears to be fault bounded by the active Superstition Hills Fault. To the west of the valley, >4-km deep valley basement extends to the active Superstition Hills Fault. Basement then shallows

  6. The Colorado MESA Program and CU-LASP: A Model for After School Program/Research Institution Collaboratives

    NASA Astrophysics Data System (ADS)

    Nelson, G.; Cobabe-Ammann, E.

    2004-12-01

    Colorado MESA is an after school program operating throughout the state with a long track record in promoting science, math and engineering education to largely underserved K-12 student populations. Currently, 81 percent of MESA students are from groups underrepresented in the math/science careers, and 85 percent of MESA students come from low- and moderate-income families. Through a combination of weekly student programs, field trips to universities and industry partners, family orientations, individual academic counseling and required curriculum, Colorado MESA offers an opportunity for students to explore STEM subjects and careers that they might not otherwise have access to - with tangible results. In the Colorado MESA Class of 2003, 97 percent of students planned on entering college this fall, with 86 percent indicating that they will enroll in math/science-based majors. In the last year, the University of Colorado's Laboratory for Atmospheric and Space Physics, a large space and earth sciences institute, has relied on the Colorado MESA program as its primary K-12 partner in Education and Public Outreach. LASP incorporates MESA into its proposal writing opportunities, from E/PO additions to individual research proposals to mission-level educational programs. In addition to funding opportunities, LASP provides scientists and engineers in a variety of contexts and content areas, while MESA works to incorporate those resources into their after school programs. The interface between the after school programs and the research institution requires ongoing communication and coordination in order to evaluate and fine-tune curriculum and activities based on feedback from MESA advisors and teachers. Currently, the MESA/LASP partnership has funded programs in astrobiology, planetary sciences and engineering.

  7. Recently Exposed Fumarole Fields Near Mullet Island, Imperial County, California

    NASA Astrophysics Data System (ADS)

    Lynch, D. K.; Hudnut, K.; Adams, P.; Bernstein, L.

    2011-12-01

    New field observations, lidar measurements, aerial imaging and preliminary laboratory measurements of mud samples are reported of three formerly submerged fumarole fields in the Salton Trough near Mullet Island in southeastern California, USA. The fumarole fields have recently been exposed as the Salton Sea level has dropped. The largest of the three fields visited in January 2011 is irregular in outline with a marked northeast elongation. It is roughly 400 meters long and 120 meters wide. The field consists of approximately one hundred warm to boiling hot (100° C) mud volcanoes (0.1 - 2 m in height), several hundred mud pots, and countless CO2 gas vents. Unusual shaped mud volcanoes in the form of vertical tubes with central vents were observed in many places. Lidar measurements were obtained in the time period Nov 9-13, 2010 using an Optech Orion 200M lidar from an elevation 800 m AGL. They reveal that the terrain immediately surrounding the two fields that are above water level reside on a low (~0.5 m high) gently sloping mound about 500 m across that shows no evidence of lineaments indicative of surface faulting. With other geothermal features, the fumaroles define a well-defined line marking the probable trace of the Calipatria fault. Although the precise locations is uncertain, it appears to define a straight line 4 km long between the Davis-Schrimpf mud volcanoes and Mullet Island. Mullet Island is one of five late Quaternary rhyolitic volcanic necks in the immediate area of the fumaroles. The Calipatria fault is subparallel to the San Andreas and Imperial faults and only one of many verified or suspected faults (including cross faults) in the complex tectonic setting of the Salton Trough. Mud from several volcanoes was analyzed using scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). One sample contained boussingaultite, (NH4)2Mg(SO4)2.6(H2O), a rare mineral that is known to sublime under fumarolic conditions, possibly by

  8. Imperial County geothermal development. Quarterly report, April 1-June 30, 1982

    SciTech Connect

    Not Available

    1982-06-30

    The activities of the Geothermal Office during the quarter are discussed, including: important geothermal events, geothermal waste disposal, a grant award by the California Energy Commission, the geothermal development meeting, and the current status of geothermal development in Imperial County. Activities of the Geothermal Planner are addressed, including permits, processing of EIR's, and other planning activities. Progress on the direct heat study is reported.

  9. 76 FR 39357 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-06

    ... Pollution Control District, Kern County Air Pollution Control District, and Ventura County Air Pollution... proposing to approve revisions to the Imperial County Air Pollution Control District (ICAPCD), Kern County Air Pollution Control District (KCAPCD), and Ventura County Air Pollution Control District...

  10. 76 FR 26615 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-09

    .... SUMMARY: EPA is finalizing approval of revisions to the Imperial County Air Pollution Control District... various air pollution sources. We are approving local rules that regulate these emission sources under the... CFR Part 52 Environmental protection, Air pollution control, Incorporation by...

  11. 78 FR 922 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-07

    ...: EPA is proposing to approve revisions to the Imperial County Air Pollution Control District (ICAPCD... for the Implementation of Title I of the Clean Air Act Amendments of 1990,'' 57 FR 13498 (April 16... Preamble for the Implementation of Title I of the Clean Air Act Amendments of 1990,'' 59 FR 41998...

  12. 76 FR 39303 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-06

    ... Pollution Control District, Kern County Air Pollution Control District, and Ventura County Air Pollution... taking direct final action to approve revisions to the Imperial County Air Pollution Control District (ICAPCD), Kern County Air Pollution Control District (KCAPCD), and Ventura County Air Pollution...

  13. 77 FR 25109 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-27

    ...: EPA is proposing to approve revisions to the Imperial County Air Pollution Control District (ICAPCD... Implementation of Title I of the Clean Air Act Amendments of 1990,'' 59 FR 41998 (August 16, 1994). 5. ``PM-10... of Subjects in 40 CFR Part 52 Air pollution control, Environmental protection,...

  14. 78 FR 23677 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-22

    ... is finalizing approval of revisions to the Imperial County Air Pollution Control District (ICAPCD... Air Pollution Control District (SJVAPCD). Response #4--The comment does not identify and we are not... submittal and review process such as contained in SJVAPCD Rule 4550 and Great Basin Unified Air...

  15. Many Rhodes: Travelling Scholarships and Imperial Citizenship in the British Academic World, 1880-1940

    ERIC Educational Resources Information Center

    Pietsch, Tamson

    2011-01-01

    Since its Foundation in 1901, the Rhodes Scholarships scheme has been held up as the archetype of a programme designed to foster imperial citizens. However, though impressive in scale, Cecil Rhodes's foundation was not the first to bring colonial students to Britain. Over the course of the previous half-century, governments, universities and…

  16. 77 FR 73391 - Approval of Air Quality Implementation Plans; California; Eastern Kern, Imperial County, Placer...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-10

    ... four permitting rules submitted for the Eastern Kern Air Pollution Control District (EKAPCD), Imperial County Air Pollution Control District (ICAPCD), Placer County Air Pollution Control District (PCAPCD... rule, will not take effect, and all public comments received will be addressed in any subsequent...

  17. Indigenous Ownership and the Emergence of U.S. Liberal Imperialism

    ERIC Educational Resources Information Center

    Konkle, Maureen

    2008-01-01

    Scholars have remarked upon the powerful--and frustrating, for analysis--abstractions of U.S. imperialism. The idea of empire itself is completely naturalized (thus the way of life) but also utterly depoliticized (thus the difficulty of recognizing it as a historical process comparable to others). By the 1830s the nation itself was understood as…

  18. Blue Indians: Teaching the Political Geography of Imperialism with Fictional Film

    ERIC Educational Resources Information Center

    Madsen, Kenneth D.

    2014-01-01

    Fictional film provides an opportunity to breathe life into the application of academic concepts by capturing the attention and imagination of students. Using the 2009 hit movie "Avatar", it is argued that popular fiction has the potential to help students grasp the dynamics of imperial/indigenous relationships in part because it removes…

  19. Educational Developments during the Years 1974 to 1976. Imperial Government of Iran.

    ERIC Educational Resources Information Center

    Institute for Research and Planning in Science and Education, Teheran (Iran).

    Since the Imperial decree in 1974, Iran has been engaged in implementing an educational policy which promotes equal educational opportunities for all its children. On the primary level, free education and one free meal daily has created an increase in enrollments in rural areas. Religious minorities, who receive free education, are allowed to…

  20. 75 FR 39365 - Revisions to the California State Implementation Plan, Imperial County Air Pollution Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-08

    ... Order Reviews I. Summary of Proposed Action On February 23, 2010 (75 FR 8008), EPA proposed a limited... are significant and consequently require BACM pursuant to EPA guidance. This determination was based... section E.6 for recreational use of public lands in Imperial County. \\6\\ 75 FR 8008, 8010-8011 and...

  1. Jane Austen and Imperialism--A Rereading of "Pride and Prejudice"

    ERIC Educational Resources Information Center

    Xu, Runjiang; Li, Yucheng

    2009-01-01

    This thesis attempts to search for the clues related to British domestic exploitation of the peasant labors and overseas colonization of other countries after rereading the novel "Pride and Prejudice," with an aim to bring out Austen's intimacy with Imperialism. It will offer some insights into a better understanding of provincial world…

  2. Linguistic Globalization and the Call Center Industry: Imperialism, Hegemony or Cosmopolitanism?

    ERIC Educational Resources Information Center

    Sonntag, Selma K.

    2009-01-01

    Linguistic imperialism, linguistic hegemony and linguistic cosmopolitanism are broad and contrasting conceptualizations of linguistic globalization that are frequently, if implicitly, invoked in the literature, both academic and non-academic, on language practices and perceptions in the call center industry. I begin with outlining each of these…

  3. Evaluation of Career Counseling and the Career Center Programs at Imperial Valley College and External Campus.

    ERIC Educational Resources Information Center

    Javens, Jack R.

    Description and evaluation of services offered by the Career Center at Imperial Valley College, a community college located in southeastern California, is reported in this document. (The college serves a large percentage of disadvantaged students, predominantly Mexican-American.) The evaluation report includes discussion of the following areas:…

  4. Beginnings of geothermal impact on county population and leadership, Imperial County, California

    SciTech Connect

    Pick, J.B.; Butler, E.W.

    1980-09-01

    A major geothermal energy development scenario is about to begin in Imperial County. Initial energy-socioeconomic interactions in the areas of population and county leadership structure are discussed. These include immigration of energy company workers, a sewage plant dispute, conflict over union affiliation of geothermal laborers, and a transmission corridor routing dispute.

  5. De/Scribing Squ*w: Indigenous Women and Imperial Idioms in the United States

    ERIC Educational Resources Information Center

    King, C. Richard

    2003-01-01

    Tracing the history of the term "squaw" offers insights into the positionings and politics of indigenous femininity in colonial America. Today, as throughout the colonization of Native America, imperial projects and projections have based themselves upon and imagined themselves through the lives, bodies, and images of indigenous women, situating…

  6. Salton Sea and Imperial Valley, California as seen from the Apollo 7 spacecra

    NASA Technical Reports Server (NTRS)

    1968-01-01

    Salton Sea and Imperial Valley area of southern California, including a portion of northern Baja California, Mexico, as seen from the Apollo 7 spacecraft during its 17th revolution of the earth. Photographed from an altitude of 125 nautical miles, at ground elapsed time of 27 hours.

  7. Twenty Years of Cultural Imperialism Research: Some Conceptual and Methodological Problems.

    ERIC Educational Resources Information Center

    Burrowes, Carl Patrick

    While the notion of "cultural imperialism" has received significant attention in communication studies since the early 1970s, researchers have ignored analyses of message systems and audience cultivation in favor of institutional analysis. Likewise, researchers have concentrated on the technologies, media products and processes of Western…

  8. "In Defence of Cricket": The Imperial Games Ethic in Victorian English Canada.

    ERIC Educational Resources Information Center

    Bennett, Paul L.

    1989-01-01

    Illustrates how societies can be judged by the athletic games they play through presentation of an exchange of letters appearing in the 1872 issues of the Upper Canada College newspaper. Shows how cricket, representing imperial society and muscular Christianity, was threatened by the Yankees and "American baseball." (LS)

  9. Mesa Verde: A Study of Man in an Agricultural Setting. Student Manual.

    ERIC Educational Resources Information Center

    Community Health Service (DHEW/PHS), Bethesda, MD.

    This student manual contains information and guides to assist the secondary student in functioning as an archeologist. Included are fables, pictures for analysis, a time line and description of the pre-history of Mesa Verde, Colorado. The manual concludes with artifact identification word sheets. A related document is ED 001 722. (AWW)

  10. Mesa Verde: A Study of Man in an Agricultural Setting. Library Packet.

    ERIC Educational Resources Information Center

    Community Health Service (DHEW/PHS), Bethesda, MD.

    This collection of secondary readings contains general information about the ecology of living space, and specific information about the prehistory ecology of Mesa Verde, Colorado. There is also a section on how anthropologists use trees to date artifacts. A related document is indexed as ED 001 721. (AWW)

  11. Women's Self-Efficacy Perceptions in Mathematics and Science: Investigating USC-MESA Students

    ERIC Educational Resources Information Center

    Hong, Rebecca C.; Jun, Alexander

    2012-01-01

    Higher education institutions have struggled with the underrepresentation of female students in the STEM majors. The authors investigate the USC-MESA program and the role of women's self-efficacy perceptions in mathematics and science. It is crucial to understand the theory of self-efficacy in examining historically underrepresented populations in…

  12. 78 FR 34554 - Establishment of Class E Airspace; Blue Mesa, CO

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-10

    ...: History On March 26, 2013, the FAA published in the Federal Register a notice of proposed rulemaking (NPRM) to establish controlled airspace at Blue Mesa, CO (78 FR 18268). Interested parties were invited to... Executive Order 12866; (2) is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44...

  13. Transportation of the MOAB Uranium Mill Tailings to White Mesa Mill by Slurry Pipeline

    SciTech Connect

    Hochstein, R. F.; Warner, R.; Wetz, T. V.

    2003-02-26

    The Moab uranium mill tailings pile, located at the former Atlas Minerals Corporation site approximately three miles north of Moab, Utah, is now under the control of the US Department of Energy (''DOE''). The location of the tailings pile adjacent to the Colorado River, and the ongoing contamination of groundwater and seepage of pollutants into the river, have lead to the investigation, as part of the final site remediation program, of alternatives to relocate the tailings to a qualified permanent disposal site. This paper will describe the approach being taken by the team formed between International Uranium (USA) Corporation (''IUC'') and Washington Group International (''WGINT'') to develop an innovative technical proposal to relocate the Moab tailings to IUC's White Mesa Mill south of Blanding, Utah. The proposed approach for relocating the tailings involves using a slurry pipeline to transport the tailings to the White Mesa Mill. The White Mesa Mill is a fully licensed, active uranium mill site that is uniquely suited for permanent disposal of the Moab tailings. The tailings slurry would be dewatered at the White Mesa Mill, the slurry water would be recycled to the Moab site for reuse in slurry makeup, and the ''dry'' tailings would be permanently disposed of in an approved below grade cell at the mill site.

  14. 75 FR 46945 - Proposed Collection; Comment Request; Multi-Ethnic Study of Atherosclerosis (MESA) Event...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-04

    ... Atherosclerosis (MESA) Event Surveillance SUMMARY: In compliance with the requirement of Section 3506(c)(2)(A) of... Budget (OMB) for review and approval. Proposed Collection: Title: Multi-Ethnic Study of Atherosclerosis... and progression of subclinical cardiovascular disease (CVD)-- that is, atherosclerosis and other...

  15. Sociodemographic correlates of cognition in the multi-ethnic study of atherosclerosis (MESA)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Our objective was to describe the methodology utilized to evaluate cognitive function in the Multi-Ethnic Study of Atherosclerosis (MESA) and to present preliminary results by age, sex, and race/ethnicity. Cross-sectional measurements of a prospective observational cohort. Residents of 6 U.S. commun...

  16. Service Integration in Colorado: Connecting Programs To Provide Better Services in Mesa and El Paso Counties.

    ERIC Educational Resources Information Center

    Ragan, Mark

    Efforts to integrate the delivery of human service programs (HSP) in Colorado's El Paso County and Mesa County were examined through site visits and meetings with 34 members of HSP staff in both counties. The site visits confirmed that staff and management of HSP in both counties have implemented a series of client-centered processes to provide…

  17. Overview of the Multiscale Epidemiologic/Economic Simulation and Analysis (MESA) Decision Support System

    SciTech Connect

    Speck, D E

    2008-04-28

    The Multiscale Epidemiologic/Economic Simulation and Analysis (MESA) Decision Support System (DSS) is the product of investments that began in FY05 by the Department of Homeland Security (DHS) Science and Technology Directorate and continue today with joint funding by both DHS and the US Department of Agriculture (USDA). The DSS consists of a coupled epidemiologic/economic model, a standalone graphical user interface (GUI) that supports both model setup and post-analysis, and a Scenario Bank archive to store all content related to foreign animal disease (FAD) studies. The MESA epi model is an object-oriented, agent-based, stochastic, spatio-temporal simulator that parametrically models FAD outbreaks and response strategies from initial disease introduction to conclusion over local, regional, and national scales. Through its output database, the epi model couples to an economic model that calculates farm-level impacts from animal infections, responsive control strategies and loss of trade. The MESA architecture contains a variety of internal models that implement the major components of the epi simulation, including disease introduction, intra-herd spread, inter-herd spread (direct and indirect), detection, and various control strategies (movement restrictions, culling, vaccination) in a highly configurable and extensible fashion. MESA development was originally focused to support investigations into the economic and agricultural industry impacts associated with Foot-and-Mouth Disease (FMD outbreaks). However, it has been adapted to other FADs such has Highly Pathogenic Avian Influenza (HPAI), Classical Swine Fever (CSF) and Exotic Newcastle Disease (END). The MESA model is highly parameterized and employs an extensible architecture that permits straightforward addition of new component models (e.g., alternative disease spread approaches) when necessary. Since its inception, MESA has been developed with a requirement to enable simulation of the very large scale

  18. GeoMesa: a distributed architecture for spatio-temporal fusion

    NASA Astrophysics Data System (ADS)

    Hughes, James N.; Annex, Andrew; Eichelberger, Christopher N.; Fox, Anthony; Hulbert, Andrew; Ronquest, Michael

    2015-05-01

    Recent advances in distributed databases and computing have transformed the landscape of spatio-temporal machine learning. This paper presents GeoMesa, a distributed spatio-temporal database built on top of Hadoop and column-family databases such as Accumulo and HBase, that includes a suite of tools for indexing, managing and analyzing both vector and raster data. The indexing techniques use space filling curves to map multi-dimensional data to the single lexicographic list managed by the underlying distributed database. In contrast to traditional non-distributed RDBMS, GeoMesa is capable of scaling horizontally by adding more resources at runtime; the index rebalances across the additional resources. In the raster domain, GeoMesa leverages Accumulo's server-side iterators and aggregators to perform raster interpolation and associative map algebra operations in parallel at query time. The paper concludes with two geo-time data fusion examples: using GeoMesa to aggregate Twitter data by keywords; and georegistration to drape full-motion video (FMV) over terrain.

  19. 77 FR 18997 - Rim Lakes Forest Restoration Project; Apache-Sitgreavese National Forest, Black Mesa Ranger...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-29

    ... Forest Service Rim Lakes Forest Restoration Project; Apache-Sitgreavese National Forest, Black Mesa... action can meet its restoration objectives, and to assure consistency with the forest plan. Information... Healthy Forest Restoration Act (HFRA) of 2003, following regulations at 36 CFR part 218. To date,...

  20. 77 FR 2242 - Radio Broadcasting Services; Ehrenberg, First Mesa, Kachina Village, Wickenburg, and Williams, AZ...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-17

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 [MB Docket No. 08-85; RM-11427, RM-11517, RM-11518, RM-11519; DA 11- 2059] Radio Broadcasting Services; Ehrenberg, First Mesa, Kachina Village, Wickenburg, and Williams, AZ, and Needles,...

  1. 77 FR 24673 - Grand Mesa, Uncompahgre and Gunnison National Forests; Colorado; Federal Coal Lease Modifications...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-25

    ... Forest Service Grand Mesa, Uncompahgre and Gunnison National Forests; Colorado; Federal Coal Lease... decide whether or not to consent to Bureau of Land Management (BLM) modifying the Federal Coal Leases COC... federal coal lease may apply to modify a lease by adding up to 960 acres. The federal agencies...

  2. Temperature and precipitation effects on agrarian economy in late imperial China

    NASA Astrophysics Data System (ADS)

    Pei, Qing; Zhang, David D.; Li, Guodong; Forêt, Philippe; Lee, Harry F.

    2016-06-01

    Climate change has been statistically proven to substantially influence the economy of early modern Europe, particularly in the long term. However, a detailed analysis of climate change and the economy of historical China remains lacking, particularly from a large-scale and quantitative perspective. This study quantitatively analyzes the relationship between climate change and the economy in late imperial China (AD 1600–1840) at the national level. This study also compares the findings on the relationship between climate change and the economy in late imperial China with those in early modern Europe. Results of multivariate regression and Granger causality analyses indicate that (1) climate change induces economic fluctuations in late imperial China, particularly in the long term; (2) given that the economic center is located in South China during the study period, temperature has a greater influence on the economy than precipitation; (3) the population of China is statistically proven to primarily act as consumers in the long term; and (4) given the long-term role of the Chinese population, the economic vulnerability in late imperial China under climate change is further increased and is higher than that in early modern Europe, whose population mainly acts as producers in the long term. In conclusion, the late imperial Chinese society has a high economic vulnerability to climate change. These findings revisit Malthusian theory and ‘Great Divergence’ theory by including the perspective of economic vulnerability under climate change during the study period. The role of the population must be investigated further to address the socioeconomic vulnerabilities under climate change.

  3. Temperature and precipitation effects on agrarian economy in late imperial China

    NASA Astrophysics Data System (ADS)

    Pei, Qing; Zhang, David D.; Li, Guodong; Forêt, Philippe; Lee, Harry F.

    2016-06-01

    Climate change has been statistically proven to substantially influence the economy of early modern Europe, particularly in the long term. However, a detailed analysis of climate change and the economy of historical China remains lacking, particularly from a large-scale and quantitative perspective. This study quantitatively analyzes the relationship between climate change and the economy in late imperial China (AD 1600-1840) at the national level. This study also compares the findings on the relationship between climate change and the economy in late imperial China with those in early modern Europe. Results of multivariate regression and Granger causality analyses indicate that (1) climate change induces economic fluctuations in late imperial China, particularly in the long term; (2) given that the economic center is located in South China during the study period, temperature has a greater influence on the economy than precipitation; (3) the population of China is statistically proven to primarily act as consumers in the long term; and (4) given the long-term role of the Chinese population, the economic vulnerability in late imperial China under climate change is further increased and is higher than that in early modern Europe, whose population mainly acts as producers in the long term. In conclusion, the late imperial Chinese society has a high economic vulnerability to climate change. These findings revisit Malthusian theory and ‘Great Divergence’ theory by including the perspective of economic vulnerability under climate change during the study period. The role of the population must be investigated further to address the socioeconomic vulnerabilities under climate change.

  4. Completion Report for Well ER-20-4 Corrective Action Units 101 and 102: Central and Western Pahute Mesa

    SciTech Connect

    NSTec Environmental Management

    2011-04-30

    Well ER-20-4 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada National Security Site, Nye County, Nevada. The well was drilled in August and September 2010 as part of the Pahute Mesa Phase II drilling program. The primary purpose of the well was to investigate the possibility of radionuclide transport from up-gradient underground nuclear tests conducted in central Pahute Mesa. This well also provided detailed hydrogeologic information in the Tertiary volcanic section that will help reduce uncertainties within the Pahute Mesa-Oasis Valley hydrostratigraphic framework model.

  5. East Arabia Landforms

    NASA Technical Reports Server (NTRS)

    2005-01-01

    11 November 2005 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows two small mesas, a hill, and other landforms in the highly-eroded landscape of eastern Arabia Terra.

    Location near: 30.0oN, 295.0oW Image width: width: 3 km (1.9 mi) Illumination from: lower left Season: Northern Winter

  6. Geologic Surface Effects of Underground Nuclear Testing, Buckboard Mesa, Climax Stock, Dome Mountain, Frenchman Flat, Rainier/Aqueduct Mesa, and Shoshone Mountain, Nevada Test Site, Nevada

    USGS Publications Warehouse

    Grasso, Dennis N.

    2003-01-01

    Surface effects maps were produced for 72 of 89 underground detonations conducted at the Frenchman Flat, Rainier Mesa and Aqueduct Mesa, Climax Stock, Shoshone Mountain, Buckboard Mesa, and Dome Mountain testing areas of the Nevada Test Site between August 10, 1957 (Saturn detonation, Area 12) and September 18, 1992 (Hunters Trophy detonation, Area 12). The ?Other Areas? Surface Effects Map Database, which was used to construct the maps shown in this report, contains digital reproductions of these original maps. The database is provided in both ArcGIS (v. 8.2) geodatabase format and ArcView (v. 3.2) shapefile format. This database contains sinks, cracks, faults, and other surface effects having a combined (cumulative) length of 136.38 km (84.74 mi). In GIS digital format, the user can view all surface effects maps simultaneously, select and view the surface effects of one or more sites of interest, or view specific surface effects by area or site. Three map layers comprise the database. They are: (1) the surface effects maps layer (oase_n27f), (2) the bar symbols layer (oase_bar_n27f), and (3) the ball symbols layer (oase_ball_n27f). Additionally, an annotation layer, named 'Ball_and_Bar_Labels,' and a polygon features layer, named 'Area12_features_poly_n27f,' are contained in the geodatabase version of the database. The annotation layer automatically labels all 295 ball-and-bar symbols shown on these maps. The polygon features layer displays areas of ground disturbances, such as rock spall and disturbed ground caused by the detonations. Shapefile versions of the polygon features layer in Nevada State Plane and Universal Transverse Mercator projections, named 'area12_features_poly_n27f.shp' and 'area12_features_poly_u83m.shp,' are also provided in the archive.

  7. Magnetotelluric Data, Rainier Mesa/Shoshone Mountain, Nevada Test Site, Nevada.

    SciTech Connect

    Jackie M. Williams; Jay A. Sampson; Brian D. Rodriguez; and Theodore H. Asch.

    2006-11-03

    The United States Department of Energy (DOE) and the National Nuclear Security Administration (NNSA) at their Nevada Site Office (NSO) are addressing ground-water contamination resulting from historical underground nuclear testing through the Environmental Management (EM) program and, in particular, the Underground Test Area (UGTA) project. From 1951 to 1992, 828 underground nuclear tests were conducted at the Nevada Test Site northwest of Las Vegas. Most of these tests were conducted hundreds of feet above the ground-water table; however, more than 200 of the tests were near or within the water table. This underground testing was limited to specific areas of the Nevada Test Site, including Pahute Mesa, Rainier Mesa/Shoshone Mountain, Frenchman Flat, and Yucca Flat. One issue of concern is the nature of the somewhat poorly constrained pre-Tertiary geology, and its effects on ground-water flow. Ground-water modelers would like to know more about the hydrostratigraphy and geologic structure to support a hydrostratigraphic framework model that is under development for the Rainier Mesa/Shoshone Mountain Corrective Action Unit (Bechtel Nevada, 2006). During 2005, the U.S. Geological Survey (USGS), in cooperation with the DOE and NNSA-NSO, collected and processed data from twenty-six magnetotelluric (MT) and audio-magnetotelluric (AMT) sites at the Nevada Test Site. The 2005 data stations were located on and near Rainier Mesa and Shoshone Mountain to assist in characterizing the pre-Tertiary geology in those areas. These new stations extend the area of the hydrogeologic study previously conducted in Yucca Flat. This work will help refine what is known about the character, thickness, and lateral extent of pre-Tertiary confining units. In particular, a major goal has been to define the upper clastic confining unit (UCCU – late Devonian to Mississippian-age siliciclastic rocks assigned to the Eleana Formation and Chainman Shale) from the Yucca Flat area and west towards

  8. Compilation of results of three-dimensional stress determinations made in Rainier and Aqueduct Mesas, Nevada Test Site, Nevada

    SciTech Connect

    Ellis, W.L.; Magner, J.E.

    1980-01-01

    Since 1971, the US Bureau of Mines overcore method has been used to determine the state of stress at nine locations within Rainier and Aqueduct Mesas at the Nevada Test Site, Nevada. Results of these determinations indicate a generally consistent pattern of relatively high stress in a northeast-southwest direction and relatively low stress in a northwest-southeast direction within the mesas. The pattern is consistent with estimates of the regional stress orientation based on geologic and geophysical evidence, including earthquake focal-plane solutions. The state of stress in Rainier and Aqueduct Mesas is probably mostly tectonic in origin, with significant modifications in stress magnitude and orientation owing to the topography of the mesas, their location above the average regional elevation, and influence of local geologic features at individual measurement locations.

  9. Numerical and experimental study of the mesa configuration in high-voltage 4H-SiC PiN rectifiers

    NASA Astrophysics Data System (ADS)

    Deng, Xiao-Chuan; Chen, Xi-Xi; Li, Cheng-Zhan; Shen, Hua-Jun; Zhang, Jin-Ping

    2016-08-01

    The effect of the mesa configuration on the reverse breakdown characteristic of a SiC PiN rectifier for high-voltage applications is analyzed in this study. Three geometrical parameters, i.e., mesa height, mesa angle and mesa bottom corner, are investigated by numerical simulation. The simulation results show that a deep mesa height, a small mesa angle and a smooth mesa bottom (without sub-trench) could contribute to a high breakdown voltage due to a smooth and uniform surface electric field distribution. Moreover, an optimized mesa structure without sub-trench (mesa height of 2.2 μm and mesa angle of 20°) is experimentally demonstrated. A maximum reverse blocking voltage of 4 kV and a forward voltage drop of 3.7 V at 100 A/cm2 are obtained from the fabricated diode with a 30-μm thick N- epi-layer, corresponding to 85% of the ideal parallel-plane value. The blocking characteristic as a function of the JTE dose is also discussed for the PiN rectifiers with and without interface charge. Project supported by the State Key Program of the National Natural Science Foundation of China (Grant No. 61234006), the Open Foundation of the State Key Laboratory of Electronic Thin Films and Integrated Devices, China (Grant No. KFJJ201301), and the National Science and Technology Major Project of the Ministry of Science and Technology, China (Grant No. 2013ZX02305-003).

  10. Analysis of Well ER-EC-1 Testing, Western Pahute Mesa-Oasis Valley FY 2000 Testing Program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-EC-1 during the Western Pahute Mesa - Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program is documented in Appendix A, Western Pahute Mesa - Oasis Valley, Well ER-EC-1 Data Report for Development and Hydraulic Testing.

  11. Analysis of Well ER-EC-7 Testing, Western Pahute Mesa - Oasis Valley FY 2000 Testing Program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-EC-7 during the Western Pahute Mesa - Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program was documented in Appendix A, Western Pahute Mesa - Oasis Valley, Well ER-EC-7 Data Report for Development and Hydraulic Testing.

  12. Analysis of Well ER-EC-6 Testing, Western Pahute Mesa - Oasis Valley FY 2000 Testing Program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-EC-6 during the Western Pahute Mesa-Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program is documented in Appendix A, Western Pahute Mesa-Oasis Valley, Well ER-EC-6 Data Report for Development and Hydraulic Testing.

  13. Analysis of Well ER-EC-5 Testing, Western Pahute Mesa-Oasis Valley FY 2000 Testing Program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-EC-5 during the Western Pahute Mesa - Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program is documented in Appendix A, Western Pahute Mesa - Oasis Valley, Well ER-EC-5 Data Report for Development and Hydraulic Testing.

  14. Analysis of Well ER-EC-2a Testing, Western Pahute Mesa-Oasis Valley FY 2000 Testing Program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-EC-2a during the Western Pahute Mesa - Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program is documented in Appendix A, Western Pahute Mesa - Oasis Valley, Well ER-EC-2a Data Report for Development and Hydraulic Testing.

  15. Analysis of Well ER-EC-4 Testing, Western Pahute Mesa-Oasis Valley FY 2000 Testing Program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-EC-4 during the Western Pahute Mesa-Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program is documented in Appendix A, Western Pahute Mesa - Oasis Valley, Well ER-EC-4 Data Report for Development and Hydraulic Testing.

  16. Analysis of Well ER-EC-8 testing, Western Pahute Mesa-Oasis Valley FY 2000 testing program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-EC-8 during the Western Pahute Mesa - Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program is documented in Appendix A, Western Pahute Mesa-Oasis Valley, Well ER-EC-8 Data Report for development and Hydraulic Testing.

  17. Analysis of well ER-18-2 testing, Western Pahute Mesa - Oasis Valley FY 2000 testing program

    SciTech Connect

    2002-09-30

    This report documents the analysis of the data collected for Well ER-18-2 during the Western Pahute Mesa - Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. The data collection for that program is documented in Appendix A, Western Pahute Mesa - Oasis Valley, Well ER-18-2 Data Report for Development and Hydraulic Testing.

  18. Imperial landscapes of health: place, plants and people between India and Australia, 1800s-1900s.

    PubMed

    Beattie, James

    2012-01-01

    In the nineteenth century, place bore immediately and urgently on questions of imperialism, race, and health. This article considers European strategies to control local environments and improve healthiness through the exchange of people, plants, ideas and garden designs between India and Australia. Migration removed Europeans from unhealthy environments, either permanently (to Australia and elsewhere) or temporarily (to hill stations in India). Trees like the eucalyptus were introduced into India to enhance European health, based on belief they drained sources of disease. I argue a crucial new understanding of the intersection between health and place in the nineteenth-century British Empire can be provided by tracing the networks through which people, plants, and ideas moved to consider the broader imperial frameworks. PMID:23066604

  19. Assessment of geothermal development in the Imperial Valley of California. Volume 2. Environmental control technology

    SciTech Connect

    Morris, W.; Hill, J.

    1980-07-01

    Environmental control technologies are essential elements to be included in the overall design of Imperial Valley geothermal power systems. Environmental controls applicable to abatement of hydrogen sulfide emissions, cooling tower drift, noise, liquid and solid wastes, and induced subsidence and seismicity are assessed here. For optimum abatement of H{sub 2}S under a variety of plant operating conditions, removal of H{sub 2}S upstream of the steam turbine is recommended. The environmental impact of cooling tower drift will be closely tied to the quality of cooling water supplies. Conventional noise abatement procedures can be applied and no special research and development are needed. Injection technology constitutes the primary and most essential environmental control and liquid waste disposal technology for Imperial Velley geothermal operations. Subsurface injection of fluids is the primary control for managing induced subsidence. Careful maintenance of injection pressure is expected to control induced seismicity. (MHR)

  20. Effect of methyl salicylate (MeSA), an elicitor on growth, physiology and pathology of resistant and susceptible rice varieties

    PubMed Central

    Kalaivani, Kandaswamy; Kalaiselvi, Marimuthu Maruthi; Senthil-Nathan, Sengottayan

    2016-01-01

    Methyl salicylate (MeSA) is a volatile organic compound synthesized from salicylic acid (SA) a plant hormone that helps to fight against plant disease. Seed treatment with MeSA, is an encouraging method to the seed industry to produce more growth and yield. The aim of our study is to find out the growth, development and disease tolerance of rice seed treated with different concentrations of MeSA. Also the seed treatments were studied to determine whether they directly influenced seedling emergence and growth in rice (Oryza sativa L) cultivars ‘IR 20, IR 50, IR 64, ASD 16, ASD 19 and ADT 46’ under greenhouse condition. MeSA seed treatments at 25, 50, 75 and 100 mg/L significantly increased seedling emergence. Effects were stronger in IR 50, and IR 64 and the effects were dose dependent, although the relationship between dose and effect was not always linear. MeSA seed treated rice plant against bacterial blight were analyzed. Bacterial blight was more effectively controlled by the seed treated with 100 mg/L than others. These results suggest that seed treatment with MeSA alters plant physiology in ways that may be useful for crop production as well as protection. PMID:27725719

  1. Solving Man-Induced Large-Scale Conservation Problems: The Spanish Imperial Eagle and Power Lines

    PubMed Central

    López-López, Pascual; Ferrer, Miguel; Madero, Agustín; Casado, Eva; McGrady, Michael

    2011-01-01

    Background Man-induced mortality of birds caused by electrocution with poorly-designed pylons and power lines has been reported to be an important mortality factor that could become a major cause of population decline of one of the world rarest raptors, the Spanish imperial eagle (Aquila adalberti). Consequently it has resulted in an increasing awareness of this problem amongst land managers and the public at large, as well as increased research into the distribution of electrocution events and likely mitigation measures. Methodology/Principal Findings We provide information of how mitigation measures implemented on a regional level under the conservation program of the Spanish imperial eagle have resulted in a positive shift of demographic trends in Spain. A 35 years temporal data set (1974–2009) on mortality of Spanish imperial eagle was recorded, including population censuses, and data on electrocution and non-electrocution of birds. Additional information was obtained from 32 radio-tracked young eagles and specific field surveys. Data were divided into two periods, before and after the approval of a regional regulation of power line design in 1990 which established mandatory rules aimed at minimizing or eliminating the negative impacts of power lines facilities on avian populations. Our results show how population size and the average annual percentage of population change have increased between the two periods, whereas the number of electrocuted birds has been reduced in spite of the continuous growing of the wiring network. Conclusions Our results demonstrate that solving bird electrocution is an affordable problem if political interest is shown and financial investment is made. The combination of an adequate spatial planning with a sustainable development of human infrastructures will contribute positively to the conservation of the Spanish imperial eagle and may underpin population growth and range expansion, with positive side effects on other endangered

  2. The Foundry: the DNA synthesis and construction Foundry at Imperial College

    PubMed Central

    Chambers, Stephen; Kitney, Richard; Freemont, Paul

    2016-01-01

    The establishment of a DNA synthesis and construction foundry at Imperial College in London heralds a new chapter in the development of synthetic biology to meet new global challenges. The Foundry employs the latest technology to make the process of engineering biology easier, faster and scalable. The integration of advanced software, automation and analytics allows the rapid design, build and testing of engineered organisms. PMID:27284027

  3. The Foundry: the DNA synthesis and construction Foundry at Imperial College.

    PubMed

    Chambers, Stephen; Kitney, Richard; Freemont, Paul

    2016-06-15

    The establishment of a DNA synthesis and construction foundry at Imperial College in London heralds a new chapter in the development of synthetic biology to meet new global challenges. The Foundry employs the latest technology to make the process of engineering biology easier, faster and scalable. The integration of advanced software, automation and analytics allows the rapid design, build and testing of engineered organisms. PMID:27284027

  4. Environmental assessmental, geothermal energy, Heber geothermal binary-cycle demonstration project: Imperial County, California

    SciTech Connect

    Not Available

    1980-10-01

    The proposed design, construction, and operation of a commercial-scale (45 MWe net) binary-cycle geothermal demonstration power plant are described using the liquid-dominated geothermal resource at Heber, Imperial County, California. The following are included in the environmental assessment: a description of the affected environment, potential environmental consequences of the proposed action, mitigation measures and monitoring plans, possible future developmental activities at the Heber anomaly, and regulations and permit requirements. (MHR)

  5. Imaging of local temperature distributions in mesas of high-Tc superconducting terahertz sources

    NASA Astrophysics Data System (ADS)

    Tsujimoto, M.; Kambara, H.; Maeda, Y.; Yoshioka, Y.; Nakagawa, Y.; Kakeya, I.

    2014-12-01

    Stacks of intrinsic Josephson junctions in high-Tc superconductors are a promising source of intense, continuous, and monochromatic terahertz waves. In this paer, we establish a fluorescence-based temperature imaging system to directly image the surface temperature on a Bi2Sr2CaCu2O8+δ mesa sample. Intense terahertz emissions are observed in both high- and low-bias regimes, where the mesa voltage satisfies the cavity resonance condition. In the high- bias regime, the temperature distributions are shown to be inhomogeneous with a considerable temperature rise. In contrast, in the low-bias regime, the distributions are rather uniform and the local temperature is close to the bath temperature over the entire sample.

  6. Impact of boron on the step-free area formation on Si(111) mesa structures

    SciTech Connect

    Roy Chaudhuri, Ayan Osten, H. J.; Fissel, A.

    2015-12-28

    We report about the influence of boron (B) on surface morphology of Si layers grown by molecular beam epitaxy on Si(111) mesas. Dimension of step-free mesa areas is reduced in comparison to pristine Si and scales with the B-coverage. This can be explained by a reduced mass transport on the Si surface in the presence of B-induced √3 × √3 surface structure which is due to a reduced Si equilibrium free adatom density. We demonstrate that a suitable combination of initial B coverage and Si layer thickness results in large step free areas and B doping concentration up to 4 × 10{sup 18 }cm{sup −3}.

  7. Seismicity of the Pahute Mesa area, Nevada Test Site: 8 October 1975 to 30 June 1976

    USGS Publications Warehouse

    Rogers, A.M.; Wuollet, Geraldine M.; Covington, P.A.

    1977-01-01

    A total of 1,075 earthquakes occurred in the Pahute Mesa area with 2.5≤ML≤4.9 during the period October 28, 1975, to June 28, 1976. The majority of these earthquakes are aftershocks of the nuclear events, Kasseri, Inlet, Muenster, Fontina, Cheshire, Estuary, Colby, and Pool (5.8≤ML≤6.3). Smaller nuclear events (ML≤5.5) on Rainier Mesa and Yucca Flat detonated in the same time period did not trigger aftershock sequences. The aftershock series were displaced laterally from ground zero and occurred deeper (at 4–6 km) than the nuclear even depth of burial (~1 km). The aftershocks appear to occur on vertical faults with approximately north-south strike.

  8. MESA 3-D calculations of armor penetration by projectiles with combined obliquity and yaw

    SciTech Connect

    Cagliostro, D.J.; Mandell, D.A.; Schwalbe, L.A.; Adams, T.F.; Chapyak, E.J. )

    1989-01-01

    We introduce and briefly describe MESA, a new 3-D hydrodynamic code, developed specifically for simulations of armor and anti-armor systems. The code's current capabilities an its planned model improvements and additions are discussed. An Eulerian code using state-of-the-art numerical methods, MESA runs faster and is less affected by spurious numerical diffusion than older codes. It models hydrodynamic flow and the dynamic deformation of solid materials. It uses simple elastic-perfectly plastic material strength models as well as models with strain and strainrate hardening and thermal softening. Future versions will incorporate advanced fracture models. It treats detonations in explosives using a programmed burn. The code's current capabilities are illustrated with simulations of experiments on yawed rods obliquely impacting armor plates at 1.29 km/s. 12 refs., 14 figs.

  9. Characterization of Mesa Verde black-on-white ceramics from southwest Colorado

    SciTech Connect

    Glowacki, D.M.; Glascock, M.D.

    1994-12-31

    The chemical characterization of ceramics using neutron activation analysis (NAA) is rapidly becoming an important means of obtaining information about the nature of ceramic production and exchange in the Southwest. However, until now, NAA has never been applied to Pueblo III (A.D. 1150-1300) ceramics from the Mesa Verde region. This study involves the characterization of Mesa Verde black-on-white bowls from the Castle Rock and Sand Canyon Pueblo sites in southwestern Colorado. As the distinctions in the different clay sources are potentially very subtle, the precision and multielement analysis provided by NAA are considered essential for this project. The purpose of the analysis is to link ceramic compositional groups to raw clay sources in order to address issues of production and exchange.

  10. Geohydrologic data and models of Rainier Mesa and their implications to Yucca Mountain

    SciTech Connect

    Wang, J.S.Y.; Cook, N.G.W.; Wollenberg, H.A.; Carnahan, C.L.; Javandel, I.; Tsang, C.F.

    1993-01-01

    The geohydrologic data collected at Rainier Mesa provide the only extensive observations in tunnels presently available on flow and transport in tuff units similar to those of a potential nuclear waste repository at Yucca Mountain. This information can, therefore, be of great value in planning the Exploratory Studies Facility (ESF) testing in underground drifts at Yucca Mountain. In this paper, we compare the geohydrologic characteristics of tuff units of these two sites and summarize the hydrochemical data indicating the presence of nearly meteoric water in Rainier Mesa tunnels. A simple analytic model is used to evaluate the possibility of propagating transient pulses of water along fractures or faults through the Paintbrush nonwelded tuff unit to reach the tunnel beds below. The results suggest that fast flow could occur without significant mixing between meteoric fracture water and matrix pore water. The implications of these findings on planning for the ESF Calico Hills study at Yucca Mountain are discussed.

  11. Hydrology and empire: the Nile, water imperialism and the partition of Africa.

    PubMed

    Tvedt, Terje

    2011-01-01

    Why did the British march up the Nile in the 1890s? The answers to this crucial question of imperial historiography have direct relevance for narratives and theories about imperialism, in general, and the partition of Africa in the nineteenth century, in particular. They will also influence our understanding of some of the main issues in the modern history of the whole region, including state developments and resource utilisation. This article presents an alternative to dominant interpretations of the partition of Africa and the role of British Nile policies in this context. It differs from mainstream diplomatic history, which dominates this research field, in its emphasis on how geographical factors and the hydrological characteristics of the Nile influenced and framed British thinking and actions in the region. Realising the importance of such factors and the specific character of the regional water system does not imply less attention to traditional diplomatic correspondence or to the role of individual imperial entrepreneurs. The strength of this analytical approach theoretically is that it makes it possible to locate the intentions and acts of historical subjects within specific geographical contexts. Empirically, it opens up a whole new set of source material, embedding the reconstruction of the British Nile discourse in a world of Nile plans, water works and hydrological discourses.

  12. Coal and coalbed methane resources of Cretaceous rocks of the Black Mesa Basin, northeastern Arizona

    SciTech Connect

    Nations, J.D.; Haven, H.W.; Swift, R.L.

    1995-06-01

    Cretaceous rocks of the Black Mesa basin of northeastern Arizona were deposited from Late Cenomanian to Santonian time near the western depositional limit of the transgressive-regressive Greenhorn and Niobrara cyclothems. Coal-bearing rocks of the sequence (including the Dakota Formation, Toreva Formation and Wepo Formation) are preserved in the Black Mesa structural basin of Laramide age. These rocks of the Black Mesa basin are the object of an NSF-sponsored research project to evaluate their coal resources and potential for coalbed methane occurrence. Forty-five measured sections and descriptions of Cretaceous rocks around the eastern margin of the basin have been incorporated into a data base in the software program LOGGER, and have been used to construct a series of stratigraphic cross-sections across the basin using the software program MacSection. These include coal beds and carbonaceous shales that are potential sources of methane as well as reservoirs, and sandstone bodies that are potential secondary reservoirs of methane (and possibly petroleum hydrocarbons from the Mancos Shale). In order to trace the facies changes between measured sections, aerial videography and 35 mm slides have been taken along the entire eastern margin of Black Mesa, a distance of 70 miles. These were digitized to provide detailed lithofacies analyses of the stratigraphic sections along the north-trending cliff line. Trends of thickness variations within these facies are interpreted from isopach maps and known shoreline trends, in order to predict the areas of greatest probability of coalbed methane generation and accumulation. These predictions are also based on the locations of anticlinal and monoclinal fold axes where they cross the thickest coal trends, due to likely enhancement of permeability by cleat and butt fractures in the coal and shale reservoir rocks.

  13. Variation in the annual average radon concentration measured in homes in Mesa County, Colorado

    SciTech Connect

    Rood, A.S.; George, J.L.; Langner, G.H. Jr.

    1990-04-01

    The purpose of this study is to examine the variability in the annual average indoor radon concentration. The TMC has been collecting annual average radon data for the past 5 years in 33 residential structures in Mesa County, Colorado. This report is an interim report that presents the data collected up to the present. Currently, the plans are to continue this study in the future. 62 refs., 3 figs., 12 tabs.

  14. Mineral resources of the Dominguez Canyon Wilderness Study Area, Delta, Mesa, and Montrose counties, Colorado

    SciTech Connect

    Toth, M.I.; Patterson, C.G.; Kulik, D.M.; Schreiner, R.A.

    1987-01-01

    The Dominguez Canyon Wilderness Study Area in Delta, Mesa, and Montrose counties, Colorado, contains flat-lying sedimentary rocks of Triassic to Cretaceous age underlain by Proterozoic crystalline rocks. Investigations by the US Geological Survey and US Bureau of Mines revealed that the wilderness study area has low mineral resource potential for metals, including uranium, oil and gas, coal, and geothermal energy. No identified resources are present.

  15. Origin of elevated water levels encountered in Pahute Mesa emplacement boreholes: Preliminary investigations

    SciTech Connect

    Brikowski, T.; Chapman, J.; Lyles, B.; Hokett, S.

    1993-11-01

    The presence of standing water well above the predicted water table in emplacement boreholes on Pahute Mesa has been a recurring phenomenon at the Nevada Test Site (NTS). If these levels represent naturally perched aquifers, they may indicate a radionuclide migration hazard. In any case, they can pose engineering problems in the performance of underground nuclear tests. The origin of these elevated waters is uncertain. Large volumes of water are introduced during emplacement drilling, providing ample source for artificially perched water, yet elevated water levels can remain constant for years, suggesting a natural origin instead. In an effort to address the issue of unexpected standing water in emplacement boreholes, three different sites were investigated in Area 19 on Pahute Mesa by Desert Research Institute (DRI) staff from 1990-93. These sites were U-19az, U-19ba, and U-19bh. As of this writing, U-19bh remains available for access; however, nuclear tests were conducted at the former two locations subsequent to this investigations. The experiments are discussed in chronological order. Taken together, the experiments indicate that standing water in Pahute Mesa emplacement holes originates from the drainage of small-volume naturally perched zones. In the final study, the fluids used during drilling of the bottom 100 m of emplacement borehole U-19bh were labeled with a chemical tracer. After hole completion, water level rose in the borehole, while tracer concentration decreased. In fact, total mass of tracer in the borehole remained constant, while water levels rose. After water levels stabilized in this hole, no change in tracer mass was observed over two years, indicating that no movement of water out of the borehole is taking place (as at U- 19ba). Continued labeling tests of standing water are recommended to confirm the conclusions made here, and to establish their validity throughout Pahute Mesa.

  16. Final phase testing and evaluation of the 500 kW direct contact pilot plant at East Mesa

    SciTech Connect

    Olander, R.; Oshmyansky, S.; Nichols, K.; Werner, D.

    1983-12-01

    The testing performed during the last phase of the geothermal direct contact heat exchanger program utilizing the 500 kW pilot plant provided more insight into the capabilities and limits of the direct contact approach and showed that more work needs to be done to understand the inner workings of a large direct contact heat exchanger if they are to be modeled analytically. Testing of the column demonstrated that the performance was excellent and that the sizing criteria is conservative. The system operated smoothly and was readily controlled over a wide range of operating conditions. Performance evaluation showed pinch differentials of 4/sup 0/F or less and better than predicted heat transfer capability. Testing during this final phase was directed towards establishing the limits of the column to transfer heat. The working column height was shortened progressively to approximately 16 feet from a design length of 28 feet. The short column performed as well as a full length column and there are indications that the column could have been shortened even more without affecting its ability to transfer heat. The column's ability to perform as well with shortened lengths indicates that the heat transfer coefficients and criteria derived from the small scale tests are very conservative.

  17. Switching current distributions and macroscopic quantum tunneling in over-doped BSCCO mesas with nanometer thickness

    NASA Astrophysics Data System (ADS)

    Kakeya, I.; Hamada, K.; Tachiki, T.; Watanabe, T.; Suzuki, M.

    2009-11-01

    The current-voltage characteristics and switching dynamics are studied in over-doped (Pb,Bi)2Sr2CaCu2O8+δ (PbBi2212) and Bi2Sr2Ca2Cu3O10+δ (Bi2223) mesa structures containing a few atomic-scale intrinsic Josephson junctions (IJJ) along the c axis. The cleave-in-vacuum method enables us to avoid the contact problems that are always accompanied by mesa structures. The highest critical current density of the zero-voltage state as Jc1 = 3.2 kA cm-2 among our micron-scale mesa structures of BSCCO cuprates are achieved. Narrowing of the switching probability distribution (SPD) due to suppression of the thermal fluctuation tends to saturate at 5 K, which is regarded as a symptom of macroscopic quantum tunneling (MQT). The crossover temperature between the MQT and the thermal escape regions is estimated as 2.2 K for the sample with the highest Jc1. In the high temperature region, another narrowing in SPD is observed that was attributed to the phase retrapping.

  18. Success in East Harlem.

    ERIC Educational Resources Information Center

    Meier, Deborah

    1987-01-01

    Traces the history of the Central Park East Elementary and Secondary Schools in Manhattan (NY), discusses the educational philosophy of the schools, and pinpoints changes Central Park East teachers have made in the traditional school structure. (PS)

  19. Age and paleoenvironment of the imperial formation near San Gorgonio Pass, Southern California

    USGS Publications Warehouse

    McDougall, K.; Poore, R.Z.; Matti, J.

    1999-01-01

    Microfossiliferous marine sediments of the Imperial Formation exposed in the Whitewater and Cabazon areas, near San Gorgonio Pass, southern California, are late Miocene in age and were deposited at intertidal to outer neritic depths, and possibly upper bathyal depths. A late Miocene age of 7.4 to >6.04 Ma is based on the ranges of age-diagnostic benthic foraminifers (Cassidulina delicata and Uvigerina peregrina), planktic foraminifers (Globigerinoides obliquus, G. extremus, and Globigerina nepenthes; zones N17-N19), and calcareous nannoplankton (Discoaster brouweri, D. aff. D. surculus, Reticulofenestra pseudoumbilicata, Sphenolithus abies, and S. neoabies; zones CN9a-CN11) coupled with published K/Ar dates from the underlying Coachella Formation (10.1 ?? 1.2 Ma; Peterson, 1975) and overlying Painted Hill Formation (6.04 ?? 0.18 and 5.94 ?? 0.18 Ma; J. L. Morton in Matti and others, 1985 and Matti and Morton, 1993). Paleoecologic considerations (sea-level fluctuations and paleotemperature) restrict the age of the Imperial Formation to 6.5 through 6.3 Ma. Benthic foraminiferal assemblages indicate that the Imperial Formation in the Whitewater and Cabazon sections accumulated at inner neritic to outer neritic (0-152 m) and possibly upper bathyal (152-244 m) depths. Shallowing to inner neritic depths occurred as the upper part of the section was deposited. This sea-level fluctuation corresponds to a global highstand at 6.3 Ma (Haq and others, 1987). Planktic foraminifers suggest an increase in surface-water temperatures upsection. A similar increase in paleotemperatures is interpreted for the North Pacific from 6.5 to 6.3 Ma (warm interval W10 of Barron and Keller, 1983). Environmental contrasts between the Whitewater and Cabazon sections of the Imperial Formation provide evidence for right-lateral displacements on the Banning fault, a late Miocene strand of the San Andreas fault system. The Cabazon section lies south of the Banning fault, and has been displaced west

  20. Stratigraphic revision and depositional environments of the Upper Cretaceous Toreva Formation in the northern Black Mesa area, Navajo and Apache counties, Arizona

    SciTech Connect

    Franczyk, K.J.

    1988-01-01

    Two units previously included in the upper part of the Toreva Formation in northern Black Mesa have been assigned new stratigraphic names. One unit previously assigned to the Toreva is reassigned to the Wepo Formation. This report describes the sedimentology of the Toreva Formation and these new units and the depositional history of the Black Mesa area during middle Turonian through early Santonian time. Correlations are made among these units on Black Mesa and Cretaceous sequences in southern Utah and western New Mexico.

  1. Metolachlor metabolite (MESA) reveals agricultural nitrate-N fate and transport in Choptank River watershed.

    PubMed

    McCarty, Gregory W; Hapeman, Cathleen J; Rice, Clifford P; Hively, W Dean; McConnell, Laura L; Sadeghi, Ali M; Lang, Megan W; Whitall, David R; Bialek, Krystyna; Downey, Peter

    2014-03-01

    Over 50% of streams in the Chesapeake Bay watershed have been rated as poor or very poor based on the index of biological integrity. The Choptank River estuary, a Bay tributary on the eastern shore, is one such waterway, where corn and soybean production in upland areas of the watershed contribute significant loads of nutrients and sediment to streams. We adopted a novel approach utilizing the relationship between the concentration of nitrate-N and the stable, water-soluble herbicide degradation product MESA {2-[2-ethyl-N-(1-methoxypropan-2-yl)-6-methylanilino]-2-oxoethanesulfonic acid} to distinguish between dilution and denitrification effects on the stream concentration of nitrate-N in agricultural subwatersheds. The ratio of mean nitrate-N concentration/(mean MESA concentration * 1000) for 15 subwatersheds was examined as a function of percent cropland on hydric soil. This inverse relationship (R(2)=0.65, p<0.001) takes into consideration not only dilution and denitrification of nitrate-N, but also the stream sampling bias of the croplands caused by extensive drainage ditch networks. MESA was also used to track nitrate-N concentrations within the estuary of the Choptank River. The relationship between nitrate-N and MESA concentrations in samples collected over three years was linear (0.95 ≤ R(2) ≤ 0.99) for all eight sampling dates except one where R(2)=0.90. This very strong correlation indicates that nitrate-N was conserved in much of the Choptank River estuary, that dilution alone is responsible for the changes in nitrate-N and MESA concentrations, and more importantly nitrate-N loads are not reduced in the estuary prior to entering the Chesapeake Bay. Thus, a critical need exists to minimize nutrient export from agricultural production fields and to identify specific conservation practices to address the hydrologic conditions within each subwatershed. In well drained areas, removal of residual N within the cropland is most critical, and practices such

  2. Comparison of Vadose Zone Hydrology of Semiarid Mesas and Canyons on the Pajarito Plateau, Los Alamos, New Mexico

    NASA Astrophysics Data System (ADS)

    Newman, B. D.

    2001-12-01

    Estimation of vadose zone processes such as recharge over plateau or basin scales requires an understanding how different topographic and/or geomorphic features control or influence vadose zone behavior. In this study, combinations of moisture content, anion (e.g., chloride), stable isotope (δ 18O and δ D), and contaminant depth profiles are used to compare mesa versus canyon vadose zone hydrology. Mesas and canyons are the two dominant topographic/geomorphic features of the Pajarito Plateau and the profile results suggest that they play a strong role in controlling variability in the downward fluxes of water. The data suggest that recharge through the mesas is minimal (less than a few mm/yr) or non-existent. Average volumetric moisture contents are quite low (10% or less) and commonly approach 2% in some units. Pore water anion concentrations tend to be high (e.g., 100's to 1000's of mg/L chloride) and stable isotope profiles can show evidence of strong evaporation. There are two exceptions to the low mesa fluxes however. First, where localized ponding on the mesa tops occurs (either natural or man-made), there is good evidence that downward fluxes increase substantially and depths of at least 30 m can be affected within a few decades. Second, it appears that the upslope portion of mesas adjacent to the mountain front may have significant downward fluxes as well. In contrast to the generally low downward movement in mesas, canyons show evidence of faster downward movement. Contaminant distributions (e.g., high explosives and perchlorate) with depth show recharge to deep aquifers (>100 m) in fifty years or less. Anion porewater concentrations are lower than in the mesa environments and stable isotope values are typically more negative than in the mesas. The faster downward movement of water in canyons appears to hold whether the canyon has ephemeral, perennial, or man-made contributions to flow. However, the data do suggest that even in the canyons, substantial

  3. [Academic presentation of neurology and psychiatry of Keijo Imperial University at annual meetings].

    PubMed

    Kanekawa, Hideo

    2012-01-01

    The origin of Keijo Imperial University, Medical School, Psychiatry course, and presentation at the Annual Meetings of the Japanese Society of Psychiatry and Neurology and The Japanese Society of Psychiatry and Neurology were investigated from its establishment to 1945. Keijo was the name used for the capital city of Korea, Seoul, when Korea was under Japanese rule. We believe the Keijo Imperial University evolved out of the Governor-General of Korea Hospital and Keijo Medical Professional School. The first Professor at the University was Shinji Suitsu, who studied under Shuzo Kure. He visited Shizuoka prefecture when he collaborated in Kure's "Actual situation and statistical observation on home custody of mental patients" (1918). This was confirmed by photographic materials from this time. The year after the visit to Shizuoka, Suitsu was sent to the Korean Peninsula. In 1913, Suitsu established the Department of Psychiatry at the Governor-General of Korea Hospital, and the institution had 500 tsubo (approximately 1,650 m2) of land within Keijo (Seoul), with floor space of 160 tsubo (approximately 528 m2) and 24 beds. Treatments were performed by Suitsu, an assistant, and 8-9 nurses. The number of hospitalized patients was 30-50 patients per year. Cells had floor heating. Keijo Imperial University was established in 1924, and was called Jodai. In 1925, Suitsu retired from his Professorship of Psychiatry at Keijo Medical Professional School. Suitsu was from Kyoto Imperial University, and had studied abroad. In 1925, Suitsu's father-in-law, and a long-time friend of Shuzo Kure, Seiji Yamane, passed away. The professor who took up the position after Suitsu was Kiyoji Kubo, who was originally supposed to go to Hokkaido Imperial University. When the medical school was established at Keijo Imperial University in 1926, Kubo was offered a professorship there. Jodai was under the jurisdiction of the Governor-General of Korea, and not the Ministry of Education. Later

  4. The Obsidian Creep Project: Seismic Imaging in the Brawley Seismic Zone and Salton Sea Geothermal Field, Imperial County, California

    NASA Astrophysics Data System (ADS)

    Catchings, R. D.; Rymer, M. J.; Goldman, M.; Lohman, R. B.; McGuire, J. J.

    2010-12-01

    In March 2010, we acquired medium- and high-resolution P- and S-wave seismic reflection and refraction data across faults in the Brawley seismic zone (BSZ) and across part of the Salton Sea Geothermal Field (SSGF), Imperial Valley, California. Our objectives were to determine the dip, possible structural complexities, and seismic velocities associated with the BSZ and SSGF. We acquired multiple seismic data sets along a north-south profile and a high-resolution P-wave profile along an east-west profile. The north-south profile included: 1) a 6.4-km-long P-wave (main) profile that was recorded on 320 Texan seismographs spaced at 20-m intervals, 2) a 1.2-km-long cabled, high-resolution profile along the northern end of the main profile, and 3) an approximately 1.2-km-long S-wave profile along the cabled profile. P-wave sources along the main profile were generated by 0.15- to 0.45-kg buried explosions spaced every 40 m, and P-wave sources along the cabled profile were generated by Betsy-Seisgun ‘shots’ spaced every 10 m. S-waves sources were generated by hammer impacts on the ends of an aluminum block. The east-west profile consisted of a 3.4-km-long high-resolution P-wave seismic profile with shots (Betsy-Seisgun) and geophones spaced every 10 m. Preliminary interpretation of shot gathers from blasts in the north-south profile suggests that the BSZ and SSGF are structurally complex, with abundant faults extending to or near the ground surface. Also, we observe relatively high-velocity material, apparent velocities of about 4.0 km/s in one direction and about 2.8 km/s in another relative to about 1.6 km/s for shallower material, that shallows beneath the SSGF. This may be due to high temperatures and resultant metamorphism of buried materials in the SSGF. From preliminary interpretation of shot gathers along the east-west profile we interpret a prominent fault that extends to the ground surface. This fault is on projection of the Kalin fault, from about 40 m to

  5. Population genetics after fragmentation: the case of the endangered Spanish imperial eagle (Aquila adalberti).

    PubMed

    Martinez-Cruz, B; Godoy, J A; Negro, J J

    2004-08-01

    The highly endangered Spanish imperial eagle, Aquila adalberti, has suffered from both population decline and fragmentation during the last century. Here we describe the current genetic status of the population using an extensive sampling of its current distribution range and both mitochondrial control region sequences and nuclear microsatellite markers. Results were evaluated in comparison to those obtained for the Eastern imperial eagle, Aquila heliaca, its nearest extant relative. Mitochondrial haplotype diversity was lower in the Spanish than in the Eastern species whereas microsatellite allelic richness and expected heterozygosity did not differ. Both allelic richness and expected heterozygosity were lower in the small Parque Nacional de Doñana breeding nucleus compared to the remaining nuclei. A signal for a recent genetic bottleneck was not detected in the current Spanish imperial eagle population. We obtained low but significant pairwise FST values that were congruent with a model of isolation by distance. FST and exact tests showed differentiation among the peripheral and small Parque Nacional de Doñana population and the remaining breeding subgroups. The centrally located Montes de Toledo population did not differ from the surrounding Centro, Extremadura and Sierra Morena populations whereas the latter were significantly differentiated. On the other hand, a Bayesian approach identified two groups, Parque Nacional de Doñana and the rest of breeding nuclei. Recent migration rates into and from Parque Nacional de Doñana and the rest of breeding nuclei were detected by assignment methods and estimated as 2.4 and 5.7 individuals per generation, respectively, by a Bayesian approach. We discuss how management strategies should aim at the maintenance of current genetic variability levels and the avoidance of inbreeding depression through the connection of the different nuclei.

  6. Study of the influential leaders, power structure, community decisions, and geothermal energy development in Imperial County, California

    SciTech Connect

    Butler, E.W.; Hall, C.H.; Pick, J.B.

    1980-04-01

    The economy of Imperial County, California, is now dominated by agriculture, but economic studies indicate that the emerging geothermal sector could grow to a size comparable to that of agriculture. The purpose of this study is to discover the kind of power structure operating in Imperial County, the influential leaders, the source of their power, their probable reactions to geothermal development, and the possible effects geothermal development will have on the power structure. Several social science research methods are used to identify the influential leaders and to describe the power structure in Imperial County. An analysis of the opinions of leadership and the public shows the likely response to geothermal development. The power structure analysis, combined with forecasts of the economic effects of geothermal development, indicates the ways in which the power structure itself may change.

  7. Assessment of geothermal development in the Imperial Valley of California. Volume 1. Environment, health, and socioeconomics

    SciTech Connect

    Layton, D.

    1980-07-01

    Utilization of the Imperial Valley's geothermal resources to support energy production could be hindered if environmental impacts prove to be unacceptable or if geothermal operations are incompatible with agriculture. To address these concerns, an integrated environmental and socioeconomic assessment of energy production in the valley was prepared. The most important impacts examined in the assessment involved air quality changes resulting from emissions of hydrogen sulfide, and increases in the salinity of the Salton Sea resulting from the use of agricultural waste waters for power plant cooling. The socioeconomics consequences of future geothermal development will generally be beneficial. (MHR)

  8. Mineral resources of the North Algodones Dunes Wilderness Study Area (CDCA-360), Imperial County, California

    SciTech Connect

    Smith, R.S.U.; Yeend, W.; Dohrenwend, J.C.; Gese, D.D.

    1984-01-01

    This report presents the results of a mineral survey of the North Algodones Dunes Wilderness Study Area (CDCA-360), California Desert Conservation Area, Imperial County, California. The potential for undiscovered base and precious metals, and sand and gravel within the North Algodones Dunes Wilderness Study Area is low. The study area has a moderate potential for geothermal energy. One small sand-free area between the Coachella Canal and the west edge of the dune field would probably be the only feasible exploration site for geothermal energy. The study area has a moderate to high potential for the occurrence of undiscovered gas/condensate within the underlying rocks. 21 refs.

  9. Porosity, permeability, and pore structure of the tight Mesa Verde sandstone, Piceance Basin, CO

    SciTech Connect

    Soeder, D.J.; Randolph, P.L.

    1984-09-01

    Special core analyses on 44 tight Mesa Verde sandstone samples from the U.S. DOE Multiwell Experiment were combined with petrographic investigations in an attempt to relate the porosity and permeability of the cores to the pore structure of the rocks. Core analysis was performed on one inch (2.54 cm) diameter horizontal plug samples using a computerized steady-state flow measuring device. This equipment routinely measures flow rates with a resolution of better than 10/sup -6/ cm/sup 3//sec. All samples were selected from intervals expected to be gas productive on the basis of wireline well logs, and were taken from the portion of the interval that showed the lowest gamma ray log response. The core plugs were measured for dry permeability to gas, relative permeability at various water saturations, porosity to gas, and pore volume compressibility. Petrographic samples were taken directly off the plug ends and were analyzed with both an optical microscope and a scanning electron microscope. The petrographic study was explicitly directed toward observing the flow paths and pore structure that had been deduced from the core analysis data. Petrographic observations revealed that the pore geometry of sandstone can be broken down into three categories: grain-supported pores, solution pores connected by narrow intergranular slots (the most common pore structure in the Mesa Verde) and matrix supported grains. Core analysis measurements correlated fairly well with pore geometry. Solution pores connected by slots varied by a factor of two in porosity and pore volume compressibility; the dry permeability values fell within the range of 0.1 to 10.0 microdarcies. Calculation of slot-like flow path dimensions from the permeability data revealed a characteristic width of only about 0.1 micron. Special core analysis of the Mesa Verde also showed trends that correlated with various depositional environments in the formation.

  10. Assessing Hydraulic Connections Across Structural Blocks, Pahute Mesa, Nevada—Detecting Distant Drawdowns

    NASA Astrophysics Data System (ADS)

    Garcia, C.; Fenelon, J. M.; Halford, K. J.; Sweetkind, D. S.

    2010-12-01

    Groundwater beneath Pahute Mesa flows through a complexly layered sequence of volcanic-rock aquifers and confining units that have been faulted into distinct structural blocks. Hydraulic properties of the rocks and structures in this aquifer system control radionuclide migration away from areas of underground testing. Detecting drawdowns in observation wells that penetrate a structural block different from the structural block intersected by the pumping well provides irrefutable evidence of a hydraulic connection. However, detecting these pumping-induced changes in water-level records typical of Pahute Mesa can be problematic because environmental noise frequently exceeds the pumping signal. Therefore, inherent noise must be removed from the water-level record systematically before pumping-induced drawdown and subsequent recovery can be quantified and analyzed. Successful applications of this approach on Pahute Mesa are illustrated using water-level records acquired during selected periods of recent drilling, development, testing, and pumping. Continuous monitoring of water level and air pressure changes in two dozen wells reveal moderate and high frequency stresses such as barometric pressure and earth tides along with gradual water-level changes induced by well drilling, development, and testing. At distances of nearly 4 km from pumping stresses, drawdown and recovery responses of less than 0.02 m can be detected using a synthetic water-level analysis. Synthetic water-levels are the summation of barometric, tidal, and pumping responses and water levels from background wells that are fit to measured water levels in remote observation wells. Pumping responses are simulated by superposition of Theis solutions. Differences between synthetic and measured water levels are minimized by adjusting the amplitude and phase of non-pumping components, while the transmissivity and storage coefficient are estimated from the pumping responses.

  11. Metolachlor metabolite (MESA) reveals agricultural nitrate-N fate and transport in Choptank River watershed

    USGS Publications Warehouse

    McCarty, Gregory W.; Hapeman, Cathleen J.; Rice, Clifford P.; Hively, W. Dean; McConnell, Laura L.; Sadeghi, Ali M.; Lang, Megan W.; Whitall, David R.; Bialek, Krystyna; Downey, Peter

    2014-01-01

    Over 50% of streams in the Chesapeake Bay watershed have been rated as poor or very poor based on the index of biological integrity. The Choptank River estuary, a Bay tributary on the eastern shore, is one such waterway, where corn and soybean production in upland areas of the watershed contribute significant loads of nutrients and sediment to streams. We adopted a novel approach utilizing the relationship between the concentration of nitrate-N and the stable, water-soluble herbicide degradation product MESA {2-[2-ethyl-N-(1-methoxypropan-2-yl)-6-methylanilino]-2-oxoethanesulfonic acid} to distinguish between dilution and denitrification effects on the stream concentration of nitrate-N in agricultural subwatersheds. The ratio of mean nitrate-N concentration/(mean MESA concentration * 1000) for 15 subwatersheds was examined as a function of percent cropland on hydric soil. This inverse relationship (R2 = 0.65, p 2 ≤ 0.99) for all eight sampling dates except one where R2 = 0.90. This very strong correlation indicates that nitrate-N was conserved in much of the Choptank River estuary, that dilution alone is responsible for the changes in nitrate-N and MESA concentrations, and more importantly nitrate-N loads are not reduced in the estuary prior to entering the Chesapeake Bay. Thus, a critical need exists to minimize nutrient export from agricultural production fields and to identify specific conservation practices to address the hydrologic conditions within each subwatershed. In well drained areas, removal of residual N within the cropland is most critical, and practices such as cover crops which sequester the residual N should be strongly encouraged. In poorly drained areas where denitrification can occur, wetland restoration and controlled drained structures that minimize ditch flow should be used to maximize denitrification.

  12. Actinide Sorption in Rainier Mesa Tunnel Waters from the Nevada Test Site

    SciTech Connect

    Zhao, P; Zavarin, M; Leif, R; Powell, B; Singleton, M; Lindvall, R; Kersting, A

    2007-12-17

    The sorption behavior of americium (Am), plutonium (Pu), neptunium (Np), and uranium (U) in perched Rainier Mesa tunnel water was investigated. Both volcanic zeolitized tuff samples and groundwater samples were collected from Rainier Mesa, Nevada Test Site, NV for a series of batch sorption experiments. Sorption in groundwater with and without the presence of dissolved organic matter (DOM) was investigated. Am(III) and Pu(IV) are more soluble in groundwater that has high concentrations of DOM. The sorption K{sub d} for Am(III) and Pu(IV) on volcanic zeolitized tuff was up to two orders of magnitude lower in samples with high DOM (15 to 19 mg C/L) compared to samples with DOM removed (< 0.4 mg C/L) or samples with naturally low DOM (0.2 mg C/L). In contrast, Np(V) and U(VI) sorption to zeolitized tuff was much less affected by the presence of DOM. The Np(V) and U(VI) sorption Kds were low under all conditions. Importantly, the DOM was not found to significantly sorb to the zeolitized tuff during these experiment. The concentration of DOM in groundwater affects the transport behavior of actinides in the subsurface. The mobility of Am(III) and Pu(IV) is significantly higher in groundwater with elevated levels of DOM resulting in potentially enhanced transport. To accurately model the transport behavior of actinides in groundwater at Rainier Mesa, the low actinide Kd values measured in groundwater with high DOM concentrations must be incorporated in predictive transport models.

  13. Intercellular Adhesion Molecule 1 and Progression of Percent Emphysema: The MESA Lung Study

    PubMed Central

    Aaron, Carrie P.; Schwartz, Joseph E.; Bielinski, Suzette J.; Hoffman, Eric A.; Austin, John H. M.; Oelsner, Elizabeth C.; Donohue, Kathleen M.; Kalhan, Ravi; Berardi, Cecilia; Kaufman, Joel D.; Jacobs, David R.; Tracy, Russell P.; Barr, R.Graham

    2014-01-01

    Endothelial intercellular adhesion molecule (ICAM) 1 binds neutrophils and facilitates their transmigration into the lung; E-selectin facilitates leukocyte rolling. As neutrophils contribute to tissue destruction in emphysema and chronic obstructive pulmonary disease, we hypothesized that soluble ICAM-1 (sICAM-1) and E-selectin (sE-selectin) would be associated with longitudinal progression of emphysema and lung function decline. The Multi-Ethnic Study of Atherosclerosis (MESA) enrolled participants 45-84 years old without clinical cardiovascular disease in 2000-02. The MESA Lung Study assessed percent emphysema (<-950 Hounsfield units) on cardiac (2000-07) and full-lung CT scans (2010-12), and spirometry was assessed twice over five years. sICAM-1 and sE-selectin were measured at baseline. Mixed-effect models adjusted for demographics, anthropometry, smoking, C-reactive protein, sphingomyelin and scanner factors. Among 1,865 MESA Lung participants with measurement of sICAM-1 and percent emphysema the mean log-sICAM-1 was 5.5±0.3 ng/mL and percent emphysema increased 0.73 percentage points (95% CI: 0.34, 1.12; P<0.001) over ten years. A one SD increase in sICAM-1 was associated with an accelerated increase in percent emphysema of 0.23 percentage points over ten years (95% CI: 0.06, 0.39; P=0.007). No significant association was found for sE-selectin, or between any adhesion molecule and lung function. Higher levels of sICAM-1 were independently associated with progression of percent emphysema in a general population sample. PMID:25457724

  14. Cutoff-mesa isolated rib optical waveguide for III-V heterostructure photonic integrated circuits

    DOEpatents

    Vawter, Gregory A.; Smith, Robert E.

    1998-01-01

    A cutoff mesa rib waveguide provides single-mode performance regardless of any deep etches that might be used for electrical isolation between integrated electrooptic devices. Utilizing a principle of a cutoff slab waveguide with an asymmetrical refractive index profile, single mode operation is achievable with a wide range of rib widths and does not require demanding etch depth tolerances. This new waveguide design eliminates reflection effects, or self-interference, commonly seen when conventional rib waveguides are combined with deep isolation etches and thereby reduces high order mode propagation and crosstalk compared to the conventional rib waveguides.

  15. Cutoff-mesa isolated rib optical waveguide for III-V heterostructure photonic integrated circuits

    DOEpatents

    Vawter, G.A.; Smith, R.E.

    1998-04-28

    A cutoff mesa rib waveguide provides single-mode performance regardless of any deep etches that might be used for electrical isolation between integrated electrooptic devices. Utilizing a principle of a cutoff slab waveguide with an asymmetrical refractive index profile, single mode operation is achievable with a wide range of rib widths and does not require demanding etch depth tolerances. This new waveguide design eliminates reflection effects, or self-interference, commonly seen when conventional rib waveguides are combined with deep isolation etches and thereby reduces high order mode propagation and crosstalk compared to the conventional rib waveguides. 7 figs.

  16. The MESA polarimetry chain and the status of its double scattering polarimeter

    SciTech Connect

    Aulenbacher, K.; Bartolomé, P. Aguar; Molitor, M.; Tioukine, V.

    2013-11-07

    We plan to have two independent polarimetry systems at MESA based on totally different physical processes. A first one tries to minimize the systematic uncertainties in double polarized Mo/ller scattering, which is to be achieved by stored hydrogen atoms in an atomic trap (Hydro-Mo/ller-Polarimeter). The other one relies on the equality of polarizing and analyzing power which allows to measure the effective analyzing power of a polarimeter with very high accuracy. Since the status of Hydro-Mo/ller is presented in a separate paper we concentrate on the double scattering polarimeter in this article.

  17. Magnetotelluric study of the Pahute Mesa and Oasis Valley regions, Nye County, Nevada

    USGS Publications Warehouse

    Schenkel, Clifford J.; Hildenbrand, Thomas G.; Dixon, Gary L.

    1999-01-01

    Magnetotelluric data delineate distinct layers and lateral variations above the pre-Tertiary basement. On Pahute Mesa, three resistivity layers associated with the volcanic rocks are defined: a moderately resistive surface layer, an underlying conductive layer, and a deep resistive layer. Considerable geologic information can be derived from the conductive layer which extents from near the water table down to a depth of approximately 2 km. The increase in conductivity is probably related to zeolite zonation observed in the volcanic rock on Pahute Mesa, which is relatively impermeable to groundwater flow unless fractured. Inferred faults within this conductive layer are modeled on several profiles crossing the Thirsty Canyon fault zone. This fault zone extends from Pahute Mesa into Oasis Valley basin. Near Colson Pond where the basement is shallow, the Thirsty Canyon fault zone is several (~2.5) kilometers wide. Due to the indicated vertical offsets associated with the Thirsty Canyon fault zone, the fault zone may act as a barrier to transverse (E-W) groundwater flow by juxtaposing rocks of different permeabilities. We propose that the Thirsty Canyon fault zone diverts water southward from Pahute Mesa to Oasis Valley. The electrically conductive nature of this fault zone indicates the presence of abundant alteration minerals or a dense network of open and interconnected fractures filled with electrically conductive groundwater. The formation of alteration minerals require the presence of water suggesting that an extensive interconnected fracture system exists or existed at one time. Thus, the fractures within the fault zone may be either a barrier or a conduit for groundwater flow, depending on the degree of alteration and the volume of open pore space. In Oasis Valley basin, a conductive surface layer, composed of alluvium and possibly altered volcanic rocks, extends to a depth of 300 to 500 m. The underlying volcanic layer, composed mostly of tuffs, fills the

  18. The MESA polarimetry chain and the status of its double scattering polarimeter

    NASA Astrophysics Data System (ADS)

    Aulenbacher, K.; Bartolomé, P. Aguar; Molitor, M.; Tioukine, V.

    2013-11-01

    We plan to have two independent polarimetry systems at MESA based on totally different physical processes. A first one tries to minimize the systematic uncertainties in double polarized Mo/ller scattering, which is to be achieved by stored hydrogen atoms in an atomic trap (Hydro-Mo/ller-Polarimeter). The other one relies on the equality of polarizing and analyzing power which allows to measure the effective analyzing power of a polarimeter with very high accuracy. Since the status of Hydro-Mo/ller is presented in a separate paper we concentrate on the double scattering polarimeter in this article.

  19. Shuttle crew escape systems (CES) rocket test at Hurricane Mesa, Utah

    NASA Technical Reports Server (NTRS)

    1987-01-01

    Shuttle crew escape systems (CES) tractor rocket tests conducted at Hurricane Mesa, Utah. This preliminary ground test of the tractor rocket will lead up to in-air evaluations. View shows tractor rocket as it is fired from side hatch mockup. The tractor rocket concept is one of two escape methods being studied to provide crew egress capability during Space Shuttle controlled gliding flight. In-air tests of the system, utilizing a Convair-240 aircraft, will begin 11-19-87 at the Naval Weapons Center in China Lake, California.

  20. Uranium-bearing coal and carbonaceous shale in La Ventana Mesa area, Sandoval County, New Mexico

    USGS Publications Warehouse

    Vine, James D.; Bachman, George O.; Read, Charles B.; Moore, George W.

    1953-01-01

    Uranium-bearing coal, carboanceous shale, and carboaceous sandstone of Upper Cretaceous age occur on and adjacent to La Ventana Mesa, Sandoval County, New Mexico.  The geologic features of the uranium deposits are described and a hypothesis for the origin and control of the uranium deposits are described and a hypothesis for the origin and control of the uranium deposits is given.  On the basis of recent sampling and analyses the uranium content in coal is found to be as much as 0.62 percent, whereas the coal ash has a uranium content that is as much as 1.34 percent.

  1. Thoughts Regarding the Dimensions of Faults at Rainier and Aqueduct Mesas, Nye County, Nevada, Based on Surface and Underground Mapping

    SciTech Connect

    Drellack, S.L.; Prothro, L.B.; Townsend, M.J.; Townsend, D.R.

    2011-02-01

    The geologic setting and history, along with observations through 50 years of detailed geologic field work, show that large-displacement (i.e., greater than 30 meters of displacement) syn- to post-volcanic faults are rare in the Rainier Mesa area. Faults observed in tunnels and drill holes are mostly tight, with small displacements (most less than 1.5 meters) and small associated damage zones. Faults are much more abundant in the zeolitized tuffs than in the overlying vitric tuffs, and there is little evidence that faults extend downward from the tuff section through the argillic paleocolluvium into pre-Tertiary rocks. The differences in geomechanical characteristics of the various tuff lithologies at Rainier Mesa suggest that most faults on Rainer Mesa are limited to the zeolitic units sandwiched between the overlying vitric bedded tuffs and the underlying pre-Tertiary units (lower carbonate aquifer–3, lower clastic confining unit–1, and Mesozoic granite confining unit).

  2. Completion Report for Well ER-EC-12 Corrective Action Units 101 and 102: Central and Western Pahute Mesa

    SciTech Connect

    NSTec Environmental Management

    2011-04-30

    Well ER-EC-12 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada National Security Site (formerly known as the Nevada Test Site), Nye County, Nevada. The well was drilled in June and July 2010 as part of the Pahute Mesa Phase II drilling program. The primary purpose of the well was to provide detailed hydrogeologic information in the Tertiary volcanic section in the area between Pahute Mesa and the Timber Mountain caldera complex that will help address uncertainties within the Pahute Mesa–Oasis Valley hydrostratigraphic model. In particular, the well was intended to help define the structural position and hydraulic parameters for volcanic aquifers potentially down-gradient from historic underground nuclear tests on Pahute Mesa. It may also be used as a long-term monitoring well.

  3. Completion Report for Well ER-EC-15 Corrective Action Units 101 and 102: Central and Western Pahute Mesa

    SciTech Connect

    NSTec Environmental Management

    2011-05-31

    Well ER-EC-15 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada National Security Site (formerly known as the Nevada Test Site), Nye County, Nevada. The well was drilled in October and November 2010, as part of the Pahute Mesa Phase II drilling program. The primary purpose of the well was to provide detailed hydrogeologic information in the Tertiary volcanic section in the area between Pahute Mesa and the Timber Mountain caldera complex that will help address uncertainties within the Pahute Mesa–Oasis Valley hydrostratigraphic model. In particular, the well was intended to help define the structural position and hydraulic parameters of volcanic aquifers potentially down-gradient from underground nuclear tests on Pahute Mesa. It may also be used as a long-term monitoring well.

  4. 77 FR 7180 - Notice of Correction to Notice of Intent To Collect Fees on Public Land in Mesa County, CO Under...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-10

    ... Bureau of Land Management Notice of Correction to Notice of Intent To Collect Fees on Public Land in Mesa County, CO Under the Federal Lands Recreation Enhancement Act AGENCY: Bureau of Land Management, Interior... Collect Fees on Public Land in Mesa County, Colorado . The BLM inadvertently published that the fee...

  5. Attributes and characteristics of the Mathematics, Engineering, Science, Achievement (MESA) high school program for first-generation Latino students

    NASA Astrophysics Data System (ADS)

    Flores, Ramon

    This study used a web-based survey collected data from 28 first-generation Latino engineers who participated in the Mathematics, Engineering, Science, Achievement (MESA) program during their high school years. From the set of 28 respondents, 5 volunteered to participate in an optional telephone interview. The purpose of this study was to describe the critical attributes and characteristics of the MESA program that lead to success at both the high school and college levels for first-generation Latino students. Success at the high school level was operationally defined as successfully graduating with a high school diploma. Success at the college level was operationally defined here as college graduation with an engineering degree. Using a mixed-methods technique, the researcher attempted to secure consensus of opinion from a sample population of 28 first-generation Latino engineers. The mixed-methods technique was chosen since it allowed the researcher to draw on the strengths of quantitative and qualitative approaches. According to the findings, the typical respondent felt that mentoring was the attribute of the MESA program that most prepared him to graduate from high school. The respondents felt that the following MESA attributes most helped them transition into an undergraduate engineering program: Academic and University Advising; Enrichment Activities; Career Advising; Field Trips; Mentoring; Scholarship Incentive Awards; and Speakers. The respondents viewed study groups as the MESA attribute that best prepared them to graduate college with an engineering degree. This study was purposefully designed as a descriptive study. Future research is required to extend this work into an evaluative study. This would allow for the generalization of the critical attributes to the general student population serviced by the MESA program.

  6. The Effectiveness of the Mathematics, Engineering, Science Achievement (MESA) Program's Administrative and Policy-Making Processes. A Report to the Legislature in Response to Assembly Bill 610 (1985). Commission Report 89-4.

    ERIC Educational Resources Information Center

    California State Postsecondary Education Commission, Sacramento.

    The Mathematics, Engineering, Science Achievement (MESA) Program was established in 1970 to increase the number of minority students in college programs. This paper reports the MESA administrative operations and policy-making processes. Part 1 summarizes the background of this study. Part 2 describes MESA's administrative operations and provides…

  7. Development of ion-implantation confined, shallow mesa stripe (Pn,Sn)Te/Pb(Te,Se) DH laser diodes

    NASA Technical Reports Server (NTRS)

    Fonstad, C. G.; Harton, A.; Jiang, Y.-N.; Appelman, H.

    1983-01-01

    Preliminary results of a program to develop ion implantation confined, shallow mesa stripe (Pb,Sn)Te laser diodes are presented. The practicality of using a shallow mesa stripe to produce single mode laser output and to increase the single mode tuning range are demonstrated. The first results of p-type ion implantation in the lead-tin salts are also reported. It is shown that sodium and lithium both can be used to convert n-type Pb(Te,Se) to p-type. The implant and anneal procedures are described, and electrical characteristics of Li-implanted layers are presented.

  8. In defence of moral imperialism: four equal and universal prima facie principles

    PubMed Central

    Dawson, A; Garrard, E

    2006-01-01

    Raanan Gillon is a noted defender of the four principles approach to healthcare ethics. His general position has always been that these principles are to be considered to be both universal and prima facie in nature. In recent work, however, he has made two claims that seem to present difficulties for this view. His first claim is that one of these four principles, respect for autonomy, has a special position in relation to the others: he holds that it is first among equals. We argue that this claim makes little sense if the principles are to retain their prima facie nature. His second claim is that cultural variation can play an independent normative role in the construction of our moral judgments. This, he argues, enables us to occupy a middle ground between what he sees as the twin pitfalls of moral relativism and (what he calls) moral imperialism. We argue that there is no such middle ground, and while Gillon ultimately seems committed to relativism, it is some form of moral imperialism (in the form of moral objectivism) that will provide the only satisfactory construal of the four principles as prima facie universal moral principles. PMID:16574872

  9. Y chromosome of Aisin Gioro, the imperial house of the Qing dynasty.

    PubMed

    Yan, Shi; Tachibana, Harumasa; Wei, Lan-Hai; Yu, Ge; Wen, Shao-Qing; Wang, Chuan-Chao

    2015-06-01

    The House of Aisin Gioro is the imperial family of the last dynasty in Chinese history-Qing dynasty (1644-1911). The Aisin Gioro family originated from Jurchen tribes and founded the Manchu people before they conquered China. By investigating the Y chromosomal short tandem repeats (STRs) of seven modern male individuals who claim to belong to the Aisin Gioro family (three of which have full records of pedigree), we found that three of them (two of which having full pedigree, whose most recent common ancestor is Nurgaci) showed very close relationship (1-2 steps of differences in 17 STRs) and possessed a rare haplotype. We therefore conclude that this haplotype is the Y chromosome of the House of Aisin Gioro. Further tests of single-nucleotide polymorphisms indicate that they belong to haplogroup C3b2b1*-M401(xF5483), although their Y-STR results indicate that they are not a part of the 'star cluster' (once linked to Genghis Khan), which belongs to the same haplogroup. This study forms the base for the pedigree research of the imperial family of Qing dynasty by means of genetics.

  10. In defence of moral imperialism: four equal and universal prima facie principles.

    PubMed

    Dawson, A; Garrard, E

    2006-04-01

    Raanan Gillon is a noted defender of the four principles approach to healthcare ethics. His general position has always been that these principles are to be considered to be both universal and prima facie in nature. In recent work, however, he has made two claims that seem to present difficulties for this view. His first claim is that one of these four principles, respect for autonomy, has a special position in relation to the others: he holds that it is first among equals. We argue that this claim makes little sense if the principles are to retain their prima facie nature. His second claim is that cultural variation can play an independent normative role in the construction of our moral judgments. This, he argues, enables us to occupy a middle ground between what he sees as the twin pitfalls of moral relativism and (what he calls) moral imperialism. We argue that there is no such middle ground, and while Gillon ultimately seems committed to relativism, it is some form of moral imperialism (in the form of moral objectivism) that will provide the only satisfactory construal of the four principles as prima facie universal moral principles.

  11. Y chromosome of Aisin Gioro, the imperial house of the Qing dynasty.

    PubMed

    Yan, Shi; Tachibana, Harumasa; Wei, Lan-Hai; Yu, Ge; Wen, Shao-Qing; Wang, Chuan-Chao

    2015-06-01

    The House of Aisin Gioro is the imperial family of the last dynasty in Chinese history-Qing dynasty (1644-1911). The Aisin Gioro family originated from Jurchen tribes and founded the Manchu people before they conquered China. By investigating the Y chromosomal short tandem repeats (STRs) of seven modern male individuals who claim to belong to the Aisin Gioro family (three of which have full records of pedigree), we found that three of them (two of which having full pedigree, whose most recent common ancestor is Nurgaci) showed very close relationship (1-2 steps of differences in 17 STRs) and possessed a rare haplotype. We therefore conclude that this haplotype is the Y chromosome of the House of Aisin Gioro. Further tests of single-nucleotide polymorphisms indicate that they belong to haplogroup C3b2b1*-M401(xF5483), although their Y-STR results indicate that they are not a part of the 'star cluster' (once linked to Genghis Khan), which belongs to the same haplogroup. This study forms the base for the pedigree research of the imperial family of Qing dynasty by means of genetics. PMID:25833470

  12. Bioindicators from Mosquitofish (Gambusia affinis) Sampled from the Imperial Valley in Southern California

    USGS Publications Warehouse

    Jenkins, Jill A.; Draugelis-Dale, Rassa O.

    2006-01-01

    The Sonny Bono Salton Sea National Wildlife Refuge (SSNWR) is located 64 km north of the Mexican border at the southern end of the Salton Sea in California's Imperial Valley. Freshwater ponds and managed habitats at the SSNWR, Calipatria, Calif. are supplied with Colorado River water that carries compounds from upstream sources. Components include municipal and industrial discharges, agricultural drainage, and sewage plant inputs. Aquatic animals in these ecosystems are continuously exposed to multiple constituents, several of which have been demonstrated to be associated with hormonal disturbances. We investigated possible endocrine impacts to fish in the Imperial Valley, Calif., by addressing the null hypothesis that aquatic species in impacted sites did not exhibit evidence of endocrine disruption as compared with those from nonimpacted sites. The results presented are intended to provide managers with science-based information and interpretations about the condition of the animals in their ecosystems for the minimization of potential adverse effects to trust fish and wildlife resources and for the maximization of available water resources.

  13. Hematology and blood chemistry values in free-living imperial cormorants (Phalacrocorax atriceps).

    PubMed

    Gallo, Luciana; Quintana, Flavio; Svagelj, Walter S; Uhart, Marcela

    2013-12-01

    As part of an on-going, long-term study on the reproductive ecology and health status of imperial cormorants (Phalacrocorax atriceps), blood samples were collected to establish baseline values for hematologic parameters (hematocrit, red and white blood cell counts, leukocyte profile, heterophil:lymphocyte ratio, total solids) and serum chemistries (glucose, uric acid, urea, total protein, triglycerides, cholesterol, albumin:globulin ratio, alkaline phosphatase, lactate dehydrogenase, creatine phosphokinase, aspartate aminotransferase, alanine aminotransferase, calcium, phosphorus). One hundred and eighty-four male adults from the Punta Le6n breeding colony in Patagonia Argentina were captured during the chick-rearing period of four breeding seasons, 2004 (n = 48), 2005 (n = 29), 2010 (n = 43), and 2011 (n = 64). All birds appeared to be in good body condition and no abnormalities were noted during physical examination. In general, values for the parameters reported in this study were similar to those previously described for other cormorant species. Significant interannual differences were observed in most health parameters analyzed. This study defines baseline health parameters for imperial cormorants and, coupled with previous reports on pathogen exposure, contributes to our knowledge of the overall health status of the species. PMID:24597115

  14. Observations of Screw Dislocation Driven Growth and Faceting During CVD Homoepitaxy on 4H-SiC On-Axis Mesa Arrays

    NASA Technical Reports Server (NTRS)

    Neudeck, Philip G.; Trunek, Andrew J.; Powell, J. Anthony; Picard, Yoosuf N.; Twigg, Mark E.

    2009-01-01

    Previous studies of (0001) homoepitaxial growth carried out on arrays of small-area mesas etched into on-axis silicon-face 4H-SiC wafers have demonstrated that spiral growth emanating from at least one screw dislocation threading the mesa is necessary in order for a mesa to grow taller in the <0001> (c-axis vertical) direction while maintaining 4H stacking sequence [1]. However, even amongst mesas containing the screw dislocation step source necessary for vertical c-axis growth, we have observed striking differences in the height and faceting that evolve during prolonged homoepitaxial growths. This paper summarizes Atomic Force Microscopy (AFM), Electron Channeling Contrast Imaging (ECCI), Scanning Electron Microscopy (SEM), and optical microscopy observations of this phenomenon. These observations support our initially proposed model [2] that the observed large variation (for mesas where 3C-SiC nucleation has not occurred) is related to the lateral positioning of a screw dislocation step source within each etched mesa. When the screw dislocation step source is located close enough to the developing edge/sidewall facet of a mesa, the c-axis growth rate and facet angle are affected by the resulting interaction. In particular, the intersection (or near intersection) of the inward-sloping mesa sidewall facet with the screw dislocation appears to impede the rate at which the spiral provides new steps required for c-axis growth. Also, the inward slope of the sidewall facet during growth (relative to other sidewalls of the same mesa not near the screw dislocation) seems to be impeded by the screw dislocation. In contrast, mesas whose screw dislocations are centrally located grow vertically, but inward sloping sidewall facets shrink the area of the top (0001) growth surface almost to the point of vanishing.

  15. Numerical and experimental study of the mesa configuration in high-voltage 4H–SiC PiN rectifiers

    NASA Astrophysics Data System (ADS)

    Deng, Xiao-Chuan; Chen, Xi-Xi; Li, Cheng-Zhan; Shen, Hua-Jun; Zhang, Jin-Ping

    2016-08-01

    The effect of the mesa configuration on the reverse breakdown characteristic of a SiC PiN rectifier for high-voltage applications is analyzed in this study. Three geometrical parameters, i.e., mesa height, mesa angle and mesa bottom corner, are investigated by numerical simulation. The simulation results show that a deep mesa height, a small mesa angle and a smooth mesa bottom (without sub-trench) could contribute to a high breakdown voltage due to a smooth and uniform surface electric field distribution. Moreover, an optimized mesa structure without sub-trench (mesa height of 2.2 μm and mesa angle of 20°) is experimentally demonstrated. A maximum reverse blocking voltage of 4 kV and a forward voltage drop of 3.7 V at 100 A/cm2 are obtained from the fabricated diode with a 30-μm thick N‑ epi-layer, corresponding to 85% of the ideal parallel-plane value. The blocking characteristic as a function of the JTE dose is also discussed for the PiN rectifiers with and without interface charge. Project supported by the State Key Program of the National Natural Science Foundation of China (Grant No. 61234006), the Open Foundation of the State Key Laboratory of Electronic Thin Films and Integrated Devices, China (Grant No. KFJJ201301), and the National Science and Technology Major Project of the Ministry of Science and Technology, China (Grant No. 2013ZX02305-003).

  16. Mesa Isochrones and Stellar Tracks (MIST). I. Solar-scaled Models

    NASA Astrophysics Data System (ADS)

    Choi, Jieun; Dotter, Aaron; Conroy, Charlie; Cantiello, Matteo; Paxton, Bill; Johnson, Benjamin D.

    2016-06-01

    This is the first of a series of papers presenting the Modules for Experiments in Stellar Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project, a new comprehensive set of stellar evolutionary tracks and isochrones computed using MESA, a state-of-the-art open-source 1D stellar evolution package. In this work, we present models with solar-scaled abundance ratios covering a wide range of ages (5≤slant {log}({Age}) [{year}]≤slant 10.3), masses (0.1≤slant M/{M}⊙ ≤slant 300), and metallicities (-2.0≤slant [{{Z}}/{{H}}]≤slant 0.5). The models are self-consistently and continuously evolved from the pre-main sequence (PMS) to the end of hydrogen burning, the white dwarf cooling sequence, or the end of carbon burning, depending on the initial mass. We also provide a grid of models evolved from the PMS to the end of core helium burning for -4.0≤slant [{{Z}}/{{H}}]\\lt -2.0. We showcase extensive comparisons with observational constraints as well as with some of the most widely used existing models in the literature. The evolutionary tracks and isochrones can be downloaded from the project website at http://waps.cfa.harvard.edu/MIST/.

  17. Evolution of antibiotic resistance on a mesa-shaped fitness landscape

    NASA Astrophysics Data System (ADS)

    Hermsen, Rutger; Hwa, Terence

    2010-03-01

    Rapid emergence of drug resistance is one of the biggest problems facing treatment of diseases ranging from bacterial infection to cancer. Recently it was found that, due to a novel growth-mediated positive feedback mechanism, the growth rate of bacteria exposed to sub-lethal antibiotic levels can drop abruptly when the drug level exceeds a sharp threshold (c.f. the preceding talk by Barrett Deris). This threshold level depends on the degree of expression and activity of the protein(s) providing antibiotic resistance. In environments with spatially varying antibiotic concentrations, this dependence gives rise to a mesa-shaped fitness landscape which provides a strong selective pressure for increasing the expression/activity of drug resistance near the cliff in the landscape. We have performed theoretical studies of evolution on such mesa-shaped fitness landscapes. These studies indicate a high rate of adaptation along the fitness cliff, often exceeding that of evolution on smooth fitness landscapes. The results of these studies establish a dynamic mechanism of evolution driven by a fitness cliff and environmental variability, and are conceptually distinct from the classical Darwinian notion of climbing a fitness gradient.

  18. Mesa Isochrones and Stellar Tracks (MIST). I. Solar-scaled Models

    NASA Astrophysics Data System (ADS)

    Choi, Jieun; Dotter, Aaron; Conroy, Charlie; Cantiello, Matteo; Paxton, Bill; Johnson, Benjamin D.

    2016-06-01

    This is the first of a series of papers presenting the Modules for Experiments in Stellar Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project, a new comprehensive set of stellar evolutionary tracks and isochrones computed using MESA, a state-of-the-art open-source 1D stellar evolution package. In this work, we present models with solar-scaled abundance ratios covering a wide range of ages (5≤slant {log}({Age}) [{year}]≤slant 10.3), masses (0.1≤slant M/{M}ȯ ≤slant 300), and metallicities (-2.0≤slant [{{Z}}/{{H}}]≤slant 0.5). The models are self-consistently and continuously evolved from the pre-main sequence (PMS) to the end of hydrogen burning, the white dwarf cooling sequence, or the end of carbon burning, depending on the initial mass. We also provide a grid of models evolved from the PMS to the end of core helium burning for -4.0≤slant [{{Z}}/{{H}}]\\lt -2.0. We showcase extensive comparisons with observational constraints as well as with some of the most widely used existing models in the literature. The evolutionary tracks and isochrones can be downloaded from the project website at http://waps.cfa.harvard.edu/MIST/.

  19. Exploration for uranium deposits in the Atkinson Mesa area, Montrose County, Colorado

    USGS Publications Warehouse

    Brew, Daniel Allen

    1954-01-01

    The U.S. Geological Survey explored the Atkinson Mesa area for uranium- and vanadium-bearing deposits from July 2, 1951, to June 18, 1953, with 397 diamond-drill holes that totaled 261,251 feet. Sedimentary rocks of Mesozoic age are exposed in the Atkinson Mesa area. They are: the Brushy Basin member of the Upper Jurassic Morrison formation, the Lower Cretaceous Burro Canyon formation, and the Upper and Lower Cretaceous Dakota sandstone. All of the large uranium-vanadium deposits discovered by Geological Survey drilling are in a series of sandstone lenses in the upper part of the Salt Wash member of the Jurassic Morrison formation. The deposits are mainly tabular and blanket-like, but some elongate pod-shaped masses, locally called "rolls" may be present. The mineralized material consists of sandstone impregnated with a uranium mineral which is probably coffinite, spme carnotite, and vanadium minerals, thought to be mainly corvusite and montroseite. In addition,, some mudstone and carbonaceous material is similarly impregnated. Near masses of mineralized material the sandstone is light gray or light brown, is generally over 40 feet thick, and usually contains some carbonaceous material and abundant disseminated pyrite or limonite stain. Similarly, the mudstone in contact with the ore-bearing sandstone near bodies of mineralized rock is commonly blue gray, as compared to its dominant red color away from ore deposits. Presence and degree of these features are useful guides in exploring for new deposits.

  20. A Hydrostratigraphic Model of the Pahute Mesa - Oasis Valley Area, Nye County, Nevada

    SciTech Connect

    S. L. Drellack, Jr.; L. B. Prothro; J. L. Gonzales

    2001-12-01

    A 3-D hydrostratigraphic framework model has been built for the use of hydrologic modelers who are tasked with developing a model to determine how contaminants are transported by groundwater flow in an area of complex geology. The area of interest includes Pahute Mesa, a former nuclear testing area at the Nevada Test Site (NTS), and Oasis Valley, a groundwater discharge area down-gradient from contaminant source areas on Pahute Mesa. To build the framework model, the NTS hydrogeologic framework was integrated with an extensive collection of drill-hole data (stratigraphic, lithologic, and alteration data); a structural model; and several recent geophysical, geological, and hydrological studies to formulate a hydrostratigraphic system. The authors organized the Tertiary volcanic units in the study area into 40 hydrostratigraphic units that include 16 aquifers, 13 confining units, and 11 composite units. The underlying pre-Tertiary rocks were divided into six hydrostratigraphic units, including two aquifers and four confining units. The model depicts the thickness, extent, and geometric relationships of these hydrostratigraphic units (''layers'' in the model) along with all the major structural features that control them, including calderas and faults. The complexity of the model area and the non-uniqueness of some of the interpretations incorporated into the base model made it necessary to address alternative interpretations for some of the major features in the model. Six of these alternatives were developed so they could be modeled in the same fashion as the base model.

  1. 2. VIEW EAST, East Control Area, west radar tower in ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. VIEW EAST, East Control Area, west radar tower in foreground, east radar lower in background - Newport NIKE Missile Battery D-57/58, Integrated Fire Control Area, Newport Road, Carleton, Monroe County, MI

  2. 3. VIEW FROM EAST. EAST ELEVATION SHOWING THE ROOF INTERSECTION ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. VIEW FROM EAST. EAST ELEVATION SHOWING THE ROOF INTERSECTION OF THE EAST AND NORTH WINGS OF THE BUILDING. - Navy Yard, Ordnance Building, Intersection of Paulding & Kennon Streets, Washington, District of Columbia, DC

  3. 8. EAST PORTAL AND DECK VIEW, FROM EAST, SHOWING PORTAL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. EAST PORTAL AND DECK VIEW, FROM EAST, SHOWING PORTAL CONFIGURATION AND LATERAL BRACING, STEEL MESH FLOOR, METAL RAILINGS, AND PORTION OF EAST APPROACH - Glendale Road Bridge, Spanning Deep Creek Lake on Glendale Road, McHenry, Garrett County, MD

  4. 55. LOOKING EAST FROM HEAD OF PLANE 2 EAST. POWER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    55. LOOKING EAST FROM HEAD OF PLANE 2 EAST. POWER HOUSE AND FLUME VISIBLE TO RIGHT, TAILRACE RUNNING THROUGH CENTER OF PHOTOGRAPH. CRADLE TO INCLINED PLANE 3 EAST IS VISIBLE IN BACKGROUND TO LEFT. - Morris Canal, Phillipsburg, Warren County, NJ

  5. 15. VIEW LOOKING EAST, SHOWING RETAINING WALL ON EAST SIDE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. VIEW LOOKING EAST, SHOWING RETAINING WALL ON EAST SIDE OF PARK, SOUTH OF ENGINE HOUSE (4' X 5' negative) - Fairmount Waterworks, East bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA

  6. The (East) Indian Woman.

    ERIC Educational Resources Information Center

    Naidoo, Josephine

    The focus of this paper is on the social, cultural, and psychological problems women of East Indian origin share with other immigrant women in Canada. Also examined are problems that are unique to the East Indian woman and the ways in which she deals with the challenges, conflicting cultural values, and expectations that confront her. The…

  7. The Middle East.

    ERIC Educational Resources Information Center

    Blouin, Virginia; And Others

    This sixth grade resource unit focuses on Middle East culture as seen through five areas of the social sciences: anthropology-sociology, geography, history, economics, and political science. Among objectives that the student is expected to achieve are the following: 1) given general information on the Middle East through the use of film, visuals,…

  8. A new and potentially damaging whitefly-transmitted virus of cucurbits was found this fall 2014 in Imperial County, CA

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A new virus that appears to be related to but distinct from Squash vein yellowing virus (SqVYV), a Bemisia tabaci-transmitted ipomovirus (family Potyviridae) that occurs in Florida was found in fall 2014 in Imperial County, CA infecting pumpkin and melon plants and exhibiting symptoms of stunting an...

  9. The Nature and Impact of Late Imperial Chinese Academies: A Review of Some Recent Publications in China

    ERIC Educational Resources Information Center

    Miles, Steven B.

    2015-01-01

    This review essay analyzes the historiography of Confucian academies ("shuyuan") in imperial China, focusing on five representative books published in China between 2008 and 2014, including two new editions of books originally published in 1995 and 2004. The five authors share a deep concern about the nature of academies, particularly…

  10. 78 FR 37845 - Meeting of the Imperial Sand Dunes Recreation Area (ISDRA) Subgroup of the California Desert...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-24

    ... California Desert District Advisory Council SUMMARY: Notice is hereby given, in accordance with Public Laws 92-463 and 94-579, that the Imperial Sand Dunes Recreation Area Subgroup of the California Desert... filed in advance of the meeting for the California Desert District Advisory Council ISDRA Subgroup,...

  11. Linguistic Imperialism.

    ERIC Educational Resources Information Center

    Phillipson, Robert

    This book explores the contemporary phenomenon of English as a world language and sets out to analyze how and why it became so dominant. It looks at the spread of English historically in order to ascertain whether the language has been promoted actively as an instrument of the foreign policy of the major English-speaking states. The book examines…

  12. Ober: A Program for Objective Based Evaluation in Reading at the Newport-Mesa Unified School District.

    ERIC Educational Resources Information Center

    Otto, Robert C.

    OBER is the acronym coined by the Newport-Mesa Unified School District to describe its utilization of the System for Objective Based Evaluation-Reading (SOBE-R) developed by the Center for the Study of Evaluation at UCLA. OBER consists of three major components that are designed to facilitate the development and evaluation of the reading programs…

  13. The effect of dissolution of volcanic glass on the water chemistry in a tuffaceous aquifer, Rainier Mesa, Nevada

    USGS Publications Warehouse

    White, Art F.; Claassen, H.C.; Benson, Larry V.

    1980-01-01

    Geochemistry of ground water associated with the Tertiary tuffs within Rainier Mesa, southern Nevada, was investigated to determine the relative importance of glass dissolution in controlling water chemistry. Water samples were obtained both from interstitial pores in core sections and from free-flowing fractures. Cation com- positions showed that calcium and magnesium decreased as a function of depth in the mesa, as sodium increased. The maximum effect occurs within alteration zones containing clinoptilolite and montmorillonite, suggesting these minerals effectively remove bivalent cations from the system. Comparisons are made between compositions of ground waters found within Rainier Mesa that apparently have not reacted with secondary minerals and compositions of waters produced by experimental dissolution of vitric and crystalline tufts which comprise the principal aquifers in the area. The two tuff phases have the same bulk chemistry but produce aqueous solutions of different chemistry. Rapid parabolic dissolution of sodium and silica from, and the retention of, potassium within the vitric phase verify previous predictions concerning water compositions associated with vitric volcanic rocks. Parabolic dissolution of the crystalline phase results in solutions high in calcium and magnesium and low in silica. Extrapolation of the parabolic dissolution mechanism for the vitric tuff to long times successfully reproduces, at com- parable pH, cation ratios existing in Rainier Mesa ground water. Comparison of mass- transfer rates of the vitric and crystalline tuffs indicates that the apparent higher glass-surface to aqueous-volume ratio associated with the vitric rocks may account for dominance of the glass reaction.

  14. Mesa County Public Library District, Final Performance Report for Library Services and Construction Act (LSCA) Title VI, Library Literacy Program.

    ERIC Educational Resources Information Center

    LaDuke, Caryl

    The Adult Reading Program, a project of the Mesa County Public Library District (Grand Junction, Colorado), involved recruitment, retention, coalition building, public awareness, training, rural oriented, basic literacy, collection development, tutoring, employment oriented, intergenerational/family, and English as a Second Language (ESL)…

  15. 77 FR 68813 - Notice of Closure of Airport Mesa/Carizzo Creek Shooting Area in Eastern San Diego County, CA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-16

    ... Bureau of Land Management Notice of Closure of Airport Mesa/Carizzo Creek Shooting Area in Eastern San.../Carrizo Creek shooting area located in eastern San Diego County, California. The closure order prohibits recreational shooting and target practice. The use of firearms will continue to be allowed for...

  16. Comments on Anthony Bruton, Miguel Garcia Lopez, and Raquel Esquiliche Mesa's "Incidental L2 Vocabulary Learning: An Impracticable Term?"

    ERIC Educational Resources Information Center

    Reynolds, Barry Lee

    2012-01-01

    Anthony Bruton, Miguel Garcia Lopez, and Raquel Esquiliche Mesa's "Incidental L2 Vocabulary Learning: An Impracticable Term?" (2011) offers some constructive criticism regarding the conventional terminology used in second language (L2) acquisition research and language pedagogy. Although the author finds much of their evidence reasonable and is…

  17. Development of Combined Site-Specific MESA and LEPA Methods on a Linear Move Sprinkler Irrigation System

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A site-specific controller, hardware and software systems were developed with the capability to switch between either mid-elevation spray application (MESA) or low energy precision application (LEPA) methods. These systems were field tested and used to manage site-specific irrigations under a linear...

  18. Use of Earth Observation Data for Environmental Monitoring in the Horn of Africa within the Framework of MESA IGAD THEMA

    NASA Astrophysics Data System (ADS)

    Atheru, Zachary; Fortunate, Muyambi

    2015-12-01

    The achievements and challenges on the implementation of activities of IGAD Climate Prediction and Applications Centre (ICPAC) regarding the use of Earth Observation data for environmental monitoring in the Horn of Africa within the framework of MESA IGAD THEMA. Examples of the outputs from the Land Degradation Assessment, Natural Habitat Conservation and Forest Monitoring are provided and explained. The difficulties faced in communicating and disseminating information particularly to decision makers are highlighted. Also outlined is the scope and expected results from the Monitoring for Environment and Security in Africa (MESA) IGAD Thematic action and emphasis placed on lessons learnt on (i) developing services from products (ii) strengthening national networks (III) disseminating and communicating information to decision and policy makers, and (iv) capacity building. The overall objective of the MESA programme in the IGAD region is to enhance land degradation mitigation, natural habitats assessment and Forest Monitoring for sustainable management of environmental resources through the use of Earth Observation data. This is done by strengthening the Earth Observation information management capacity of regional and national institutions in order to support decision and policy making processes. The services produce and distribute regularly land degradation index maps, land cover change indicators on IGAD selected Natural Habitats areas, Forest degradation, deforestation extent, vulnerability index map. It also develops the political and policy frameworks that are strengthened to ensure an active and sustainable participation of IGAD member states in global environmental surveillance initiatives and finally give adequate technical capacity of MESA IGAD stakeholders.

  19. Sourcebook of locations of geophysical surveys in tunnels and horizontal holes including results of seismic-refraction surveys: Rainier Mesa, Aqueduct Mesa, and Area 16, Nevada Test Site

    SciTech Connect

    Carroll, R.D.; Kibler, J.E.

    1983-01-01

    Seismic refraction surveys have been obtained sporadically in tunnels in zeolitized tuff at the Nevada Test Site since the late 1950's. Commencing in 1967 and continuing to date (1982), extensive measurements of shear- and compressional-wave velocities have been made in five tunnel complexes in Rainier and Aqueduct Mesas and in one tunnel complex in Shoshone Mountain. The results of these surveys to 1980 are compiled in this report. In addition, extensive horizontal drilling was initiated in 1967 in connection with geologic exploration in these tunnel complexes for sites for nuclear weapons tests. Seismic and electrical surveys were conducted in the majority of these holes. The type and location of these tunnel and borehole surveys are indexed in this report. Synthesis of the seismic refraction data indicates a mean compressional-wave velocity near the nuclear device point (WP) of 23 tunnel events of 2430 m/s (7970 f/s) with a range of 1846 to 2753 m/s (6060 to 9030 f/s). The mean shear-wave velocity of 17 tunnel events is 1276 m/s (4190 f/s) with a range of 1140 to 1392 m/s (3740 to 4570 f/s). Experience indicates that these velocity variations are due chiefly to the extent of fracturing and (or) the presence of partially saturated rock in the region of the survey.

  20. Sourcebook of locations of geophysical surveys in tunnels and horizontal holes, including results of seismic refraction surveys, Rainier Mesa, Aqueduct Mesa, and Area 16, Nevada Test Site

    USGS Publications Warehouse

    Carroll, R.D.; Kibler, J.E.

    1983-01-01

    Seismic refraction surveys have been obtained sporadically in tunnels in zeolitized tuff at the Nevada Test Site since the late 1950's. Commencing in 1967 and continuing to date (1982), .extensive measurements of shear- and compressional-wave velocities have been made in five tunnel complexes in Rainier and Aqueduct Mesas and in one tunnel complex in Shoshone Mountain. The results of these surveys to 1980 are compiled in this report. In addition, extensive horizontal drilling was initiated in 1967 in connection with geologic exploration in these tunnel complexes for sites for nuclear weapons tests. Seismic and electrical surveys were conducted in the majority of these holes. The type and location of these tunnel and borehole surveys are indexed in this report. Synthesis of the seismic refraction data indicates a mean compressional-wave velocity near the nuclear device point (WP) of 23 tunnel events of 2,430 m/s (7,970 f/s) with a range of 1,846-2,753 m/s (6,060-9,030 f/s). The mean shear-wave velocity of 17 tunnel events is 1,276 m/s (4,190 f/s) with a range of 1,140-1,392 m/s (3,740-4,570 f/s). Experience indicates that these velocity variations are due chiefly to the extent of fracturing and (or) the presence of partially saturated rock in the region of the survey.

  1. How Jurassic Folds Control the Geometry of a Tertiary Intrusion: Trachyte Mesa, Henry Mountains, Utah

    NASA Astrophysics Data System (ADS)

    Kiyosugi, K.; Connor, C.; Wetmore, P. H.; Roman, D. C.

    2009-12-01

    Mechanisms of igneous intrusion are important to understand for improving forecasts of volcanic activity and to interpret geophysical results gathered on volcanoes. An igneous intrusion in the Henry Mountains, Utah was mapped and found to have remarkable features: First, the magma was more dense than the surrounding host rocks and therefore injected under pressure, rather than buoyantly ascending. Second, it intruded along the axis of a syncline and in between beds of Entrada sandstone. Thus, the intrusion of dense magma was strongly controlled by pre-existing structure and magma pressure or rigidity contrasts in the host rock. We attempted to simulate the conditions of this intrusion with analog experiments in blocks of gelatin solidified in 15 cm x 15 cm x 15 cm plastic tanks. Two types of gelatin block were used: The first consisted of two layers, with a more rigid upper layer and a layer boundary molded into folds. To simulate magma intrusion, air was injected into the gelatin block from a hole in the bottom of the tank with a syringe. The air crack then ascended buoyantly in the gelatin block. The second type of gelatin block had uniform rigidity but a fold was precut in the upper part of gelatin block. In this case, both air and dyed sugar water, more dense than the gelatin block, were injected into the base of the tank. Because of the lack of buoyancy, continuous injection pressure was applied to extend the water crack upward in the gelatin block. In the first experiment, the rigidity contrast worked as a barrier to upward air crack ascent, but did not simulate fluid concentration along the axis of a syncline as observed in the Trachyte Mesa intrusion. Experiments with the precut gelatin block showed two different results based on the density contrast between the injected fluid and gelatin: When air was injected into a gelatin block, the air crack arrested in the anticline after arriving at the precut fold. However, when denser sugar water was injected into

  2. Recent geothermal developments in the Imperial Valley: Brawley, Salton Sea, Heber

    SciTech Connect

    Papay, L.T.

    1983-01-01

    Imperial Valley programs in geothermal energy are reviewed. The Brawley plant has had a relatively high availability on line since its startup in 1980. The startup at Salton Sea plant was surprisingly smooth. Using these research projects, all of the technical parameters for commercial development of geothermal energy will be known in a year or two. Native brine handling processes, casing materials and configurations, and turbine modifications are being studied. The PUC's decision on the Heber plant was a temporary setback. PUC ruled that projects will not be approved unless they yield competitive busbar costs. The Avoided Cost concept has become the benchmark at PUC. But Avoided Cost does not account for the higher initial design costs and unknown parameters of startup as opposed to mature plant costs. Avoided Cost is seen as the only obstacle to commercial developement in all areas.

  3. Comparison of multispectral remote-sensing techniques for monitoring subsurface drain conditions. [Imperial Valley, California

    NASA Technical Reports Server (NTRS)

    Goettelman, R. C.; Grass, L. B.; Millard, J. P.; Nixon, P. R.

    1983-01-01

    The following multispectral remote-sensing techniques were compared to determine the most suitable method for routinely monitoring agricultural subsurface drain conditions: airborne scanning, covering the visible through thermal-infrared (IR) portions of the spectrum; color-IR photography; and natural-color photography. Color-IR photography was determined to be the best approach, from the standpoint of both cost and information content. Aerial monitoring of drain conditions for early warning of tile malfunction appears practical. With careful selection of season and rain-induced soil-moisture conditions, extensive regional surveys are possible. Certain locations, such as the Imperial Valley, Calif., are precluded from regional monitoring because of year-round crop rotations and soil stratification conditions. Here, farms with similar crops could time local coverage for bare-field and saturated-soil conditions.

  4. Characterisation of imperial college reactor centre legacy waste using gamma-ray spectrometry

    NASA Astrophysics Data System (ADS)

    Shuhaimi, Alif Imran Mohd

    2016-01-01

    Waste characterisation is a principal component in waste management strategy. The characterisation includes identification of chemical, physical and radiochemical parameters of radioactive waste. Failure to determine specific waste properties may result in sentencing waste packages which are not compliant with the regulation of long term storage or disposal. This project involved measurement of intensity and energy of gamma photons which may be emitted by radioactive waste generated during decommissioning of Imperial College Reactor Centre (ICRC). The measurement will use High Purity Germanium (HPGe) as Gamma-ray detector and ISOTOPIC-32 V4.1 as analyser. In order to ensure the measurements provide reliable results, two quality control (QC) measurements using difference matrices have been conducted. The results from QC measurements were used to determine the accuracy of the ISOTOPIC software.

  5. Spatial structure in the diet of imperial eagles Aquila heliaca in Kazakhstan

    USGS Publications Warehouse

    Katzner, T.E.; Bragin, E.A.; Knick, S.T.; Smith, A.T.

    2006-01-01

    We evaluated the relationship between spatial variability in prey and food habits of eastern imperial eagles Aquila heliaca at a 90,000 ha national nature reserve in north-central Kazakhstan. Eagle diet varied greatly within the population and the spatial structure of eagle diet within the population varied according to the scale of measurement. Patterns in dietary response were inconsistent with expectations if either ontogenetic imprinting or competition determined diet choice, but they met expectations if functional response determined diet. Eagles nesting near a high-density prey resource used that resource almost exclusively. In contrast, in locations with no single high-density prey species, eagles' diet was more diverse. Our results demonstrate that spatial structuring of diet of vertebrate predators can provide important insight into the mechanisms that drive dietary decisions. ?? OIKOS.

  6. Response of El Centro Steam Plant equipment during the October 15, 1979 Imperial Valley earthquake

    SciTech Connect

    Nelson, T. A.; Murray, R. C.; Young, J. A.; Campbell, R. D.; Martore, J. A.; Levin, H. A.; Reiter, L.

    1980-09-01

    For the US Nuclear Regulatory Commission (NRC), Lawrence Livermore National Laboratory (LLNL) performed a dynamic seismic analysis of Unit 4 of the El Centro Steam Plant in El Centro, Calif. Built in 1968, Unit 4 is an oil- or gas-fired, steam-driven turbine-generator that was designed to resist a static lateral force equivalent to 20% of the dead and live load. The unit's structural and mechanical systems sustained only minor damage during the October 15, 1979 Imperial Valley earthquake that produced an estimated 0.5 g peak horizontal ground acceleration (0.66 g vertical) at the site. LLNL's seismic analysis was done to analytically estimate the equipment response, which, when compared to actual observation, will indicate the levels of actual equipment capacity. 15 refs., 51 figs., 11 tabs.

  7. [Changes in the Declaration of Helsinki: economic fundamentalism, ethical imperialism and social control].

    PubMed

    Garrafa, V; Prado, M M

    2001-01-01

    This study is a critical reflection on attempts to alter the Declaration of Helsinki, a key document of the democratic theses achieved in the latter half of the 20th century and thus a legacy for humanity because of its ethical guidelines for research involving human beings. Therefore, there must be worldwide social control over such a document, and any change in it demands ample debate with international participation to avoid any reversal in its humanitarian thrust. The study analyzes current aspects of research with human subjects in so-called "outlying" or "developing" countries. It also brings a social and political focus to the matter, highlighting that the economic fundamentalism exercised by wealthy countries inevitably leads to an ethical imperialism, exposing communities of poor countries to even greater vulnerability, discrimination, and social exclusion.

  8. 19. VIEW OF CRUDE ORE BINS FROM EAST. EAST CRUDE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    19. VIEW OF CRUDE ORE BINS FROM EAST. EAST CRUDE ORE BIN IN FOREGROUND WITH DISCHARGE TO GRIZZLY AT BOTTOM OF VIEW. CONCRETE RETAINING WALL TO LEFT (SOUTH) AND BOTTOM (EAST EDGE OF EAST BIN). - Bald Mountain Gold Mill, Nevada Gulch at head of False Bottom Creek, Lead, Lawrence County, SD

  9. Controlling tailwater sediment and phosphorus concentrations with polyacrylamide in the Imperial Valley, California.

    PubMed

    Goodson, Christopher C; Schwartz, Gregory; Amrhein, Christopher

    2006-01-01

    External loading of phosphorus (P) from agricultural surface discharge (tailwater) is the main cause of excessive algae growth and the eutrophication of the Salton Sea, California. Continuous polyacrylamide (PAM) applications to agricultural irrigation water inflows were evaluated as a means of reducing sediment and P in tailwater. Zero (control) and 1 mg L(-1) PAM (PAM1) treatments were compared at 17 Imperial Valley field sites. Five and 10 mg L(-1) PAM treatments (PAM5, PAM10) were conducted at one site. The particulate phosphorus (Pp) fraction was determined as the difference between total phosphorus (Pt) and the soluble phosphorus (Ps) fraction. We observed 73, 82, and 98% turbidity reduction with PAM1, PAM5, and PAM10 treatments. Although eight field sites had control tailwater sediment concentrations above the New River total maximum daily loads (TMDL), all but one were made compliant during their paired PAM1 treatments. While PAM1 and PAM10 reduced tail water Pp by 31 and 78%, none of the treatments tested reduced Ps. This may have been caused by high irrigation water Na concentrations which would reduce Ca adsorption and Ca-phosphate bridging on the PAM. The PAM1 treatments resulted in <0.5 mg L(-1) drain water polyacrylamide concentrations 1.6 km downstream of PAM addition, while PAM5 and PAM10 treatments produced > 2 mg L(-1) drain water polyacrylamide concentrations. We concluded that, although PAM practically eliminates Imperial Valley tailwater sediment loads, it does not effectively reduce tailwater Ps, the P fraction most responsible for the eutrophication of the Salton Sea. PMID:16738392

  10. Surface pauses in relation to dive duration in imperial cormorants; how much time for a breather?

    PubMed

    Wilson, Rory P; Quintana, Flavio

    2004-05-01

    Air-breathing animals diving to forage can optimize time underwater by diving with just enough oxygen for the projected performance underwater. By so doing they surface with minimal body oxygen levels, which leads to maximal rates of oxygen uptake. We examined whether imperial cormorants Phalacrocorax atriceps adhere to this by examining dive:pause ratios in birds diving for extended, continuous periods to constant depths, assuming that the oxygen used underwater was exactly replenished by the periods at the surface. Examination of the cumulative time spent in surface pauses relative to the cumulative time spent in diving showed that surface pauses increase according to a power curve function of time spent in the dive or water depth. In a simplistic model we considered the rate at which birds expended energy underwater to be constant and that the rate of oxygen replenishment during the surface pause was directly proportional to the oxygen deficit. We then worked out values for the rate constant for the surface pause before using this constant to examine bird body oxygen levels immediately pre- and post dive. The model predicted that imperial cormorants do not submerge with just enough oxygen to cover their projected dive performance but rather dive with substantial reserves, although these reserves decrease with increasing dive depth/duration. We speculate that these oxygen reserves may be used to enhance bird survival when rare events, such as the appearance of predators or discovery of large prey requiring extended handling time, occur. The form of the oxygen saturation curve over time at the surface means that the time costs for maintaining constant oxygen reserves become particularly onerous for long, deep dives, so the observed decrease in reserves with increasing dive duration is expected in animals benefiting by optimizing for time. PMID:15107434

  11. Summary of Well Testing and Analysis, Western Pahute Mesa - Oasis Valley FY 2000 Testing Program

    SciTech Connect

    2002-09-30

    This report summarizes the results of the analysis of the Western Pahute Mesa-Oasis Valley (WPM-OV) well development and testing program that was conducted during fiscal year (FY) 2000. This program included the testing of eight wells: ER-EC-1, ER-EC-6, ER-18-2, ER-EC-7, ER-EC-5, ER-EC-8, ER-EC-2a, and ER-EC-4. The locations of these wells are shown in Figure 1-1. The data collection for the program was documented in individual well development and testing reports. Drilling and well construction information has been documented in individual well completion reports. This summary report is based on the individual well analysis reports.

  12. Velocity logging and seismic velocity of rocks in the Rainier Mesa area, Nevada Test Site, Nevada

    SciTech Connect

    Carroll, R.D.; Magner, J.E.

    1988-01-01

    Velocity data obtained in 38 vertical drill holes in the Rainier and Aqueduct Mesa area were evaluated. Twenty-three geophone surveys and 20 acoustic logs were used to define the in-situ velocity of rocks in the region. The vertical velocity profile can be subdivided into the caprock; the unsaturated zone, the base of which is approximately defined by the top of pervasive zeolitization; the saturated zone of zeolitized rocks; and the pre-Tertiary clastic and carbonate rocks. Comparisons of geophone and acoustic log surveys indicate considerable positive drift (higher acoustic log velocity) in several holes, and none of the postulated causes (dispersion, geologic structure, data error, invasion) can be isolated.

  13. Software Requirements Specification: Multi-scale Epidemiological and Economic Simulation and Analysis (MESA) Scenario Bank

    SciTech Connect

    Dahlgren, T L; Hazlett, S G; Slone, D M; Smith, S G

    2006-11-08

    This document builds on the discussion notes from September 21, 2006. It provides a summary of the ideas relating to the scenario bank tables and their associated requirements. Two conceptual groupings were identified for the contents requirements of the scenario bank. The first, called ProjectTemplate, shall consist of groups. The second, ProjectArchive, shall consist of groups of . The figure below illustrates the multiplicity of the associations between the different tables, with color coding used to distinguish between current MESA (brown) and USDA (light green) requirements. Scenario bank tables are shown in black with their general contents specified within the box. The metadata associated with each table is expected to include database key information as well as relevant timestamps. Each File is expected to be a file with an arbitrary format.

  14. Micromachining of mesa and pyramidal-shaped objects in (1 0 0) InP substrates

    NASA Astrophysics Data System (ADS)

    Eliás, P.; Martaus, J.; Soltýs, J.; Kostic, I.

    2005-05-01

    Generally oriented mesas and pyramidal-shaped objects were patterned in (1 0 0) InP substrate by etching in 3HCl:1H3PO4 at (16 ± 0.05) °C through convex InGaAs mask patterns. The mesas were revealed through long (~2 mm) parallelogram-shaped mask strips whose long edges lay between [0 1 1] and [0\\,\\bar{1} \\,1] at a variable angle ω, with ω ≡ 0° at [0 1 1]. The mesas were re-entrant for ω epsi [0°, 45°) and ordinary for ω epsi (45°, 90°]. The tilt of mesa side facets α and the associated mask underetching rates were evaluated using SEM, AFM and optical microscopy. The underetching rate was zero at ω = 0° and 90°. With |(ω - 45°)| → 0° it increased asymmetrically about [0 0 1]: for |(ω1 - 45°)| = |(ω2 - 45°)| it was higher at ω1 < 45° than at ω2 > 45°. At ω = 45.5° ordinary (1 1 0)- and (1\\,\\bar{1}\\,0) -related facets, tilted at α ap 45°, were revealed at a rate of (310.1 ± 8.1) nm min-1. Likewise at ω = 45.5° off [0 1 1] to [0\\,1\\,\\bar{1}] (1 0 1)- and (1\\,0\\,\\bar{1}) -related facets formed. In theory, (1 1 0), (1\\,\\bar{1}\\,0) , (1 0 1) and (1\\,0\\,\\bar{1}) define a pyramidal shape with the sides tilted at 45° to (1 0 0). In practice, an object confined by facets related to (1 1 0), (1\\,\\bar{1}\\,0) , (1 0 1) and (1\\,0\\,\\bar{1}) cannot be revealed via a convex-cornered lozenge-shaped pattern with the edges at ω = 45.5° and diagonals parallel with [0 1 1] and [0\\,1\\,\\bar{1}] because the 'pyramidal' facets are suppressed by fast-etching re-entrant facets that form at the [0\\,1\\,\\bar{1}] - and [0\\,\\bar{1} \\,1] -oriented corners. If compensated with e.g. rectangular strips, the pyramidal facets can be revealed at the lozenge edges. Etch-stop (2 1 1)A-related facets were formed along the compensation strip edges and fast-etching re-entrant facets at the convex corners of the compensation strips. The angular orientation of the pyramidal facets slightly shifted with etching time: the normal vector of the

  15. Ultrathin films of Cu on Ru(1 0 1bar 0): Flat bilayers and mesa islands

    NASA Astrophysics Data System (ADS)

    Brona, J.; Wasielewski, R.; Ciszewski, A.

    2012-10-01

    The Cu/Ru(1 0 1bar 0) adsorption system was investigated by STM, LEED and AES. Cu was deposited at room temperature (RT) and 800 K, with the coverage ranging from a fraction up to 4 bilayers (BL). The first two Cu BL grow in the bilayer-by-bilayer mode. Their structure is pseudomorphic and does not depend on the temperature. For coverage higher than 2 BL, Cu deposited at elevated temperature forms three-dimensional islands in mesa shape with Cu(1 1 1) facets on their tops. The facets and the substrate are epitaxially oriented with Cu(1 1 1)||Ru(1 0 1bar 0) and Cu[0 1 1bar]||Ru[1 2bar 1 0]. Obtained results can be helpful in search for an optimal method of Cu deposition onto Ru in the damascene process in microelectronics, and could be also of interest to catalysis.

  16. Core drilling provides information about Santa Fe Group aquifer system beneath Albuquerque's West Mesa

    USGS Publications Warehouse

    Allen, B.D.; Connell, S.D.; Hawley, J.W.; Stone, B.D.

    1998-01-01

    Core samples from the upper ???1500 ft of the Santa Fe Group in the Albuquerque West Mesa area provide a first-hand look at the sediments and at subsurface stratigraphic relationships in this important part of the basin-fill aquifer system. Two major hydrostratigraphic subunits consisting of a lower coarse-grained, sandy interval and an overlying fine-grained, interbedded silty sand and clay interval lie beneath the water table at the 98th St core hole. Borehole electrical conductivity measurements reproduce major textural changes observed in the recovered cores and support subsurface correlations of hydrostratigraphic units in the Santa Fe Group aquifer system based on geophysical logs. Comparison of electrical logs from the core hole and from nearby city wells reveals laterally consistent lithostratigraphic patterns over much of the metropolitan area west of the Rio Grande that may be used to delineate structural and related stratigraphic features that have a direct bearing on the availability of ground water.

  17. Preliminary Map of Landslide Deposits in the Mesa Verde National Park Area, Colorado

    USGS Publications Warehouse

    Carrara, Paul E.

    2009-01-01

    This report presents a preliminary map of landslide deposits in the Mesa Verde National Park area (see map sheet) at a compilation scale of 1:50,000. Landslide is a general term for landforms produced by a wide variety of gravity-driven mass movements, including various types of flows, slides, topples and falls, and combinations thereof produced by the slow to rapid downslope transport of surficial materials or bedrock. The map depicts more than 200 landslides ranging in size from small (0.01 square miles) earthflows and rock slumps to large (greater than 0.50 square miles) translational slides and complex landslides (Varnes, 1978). This map has been prepared to provide a regional overview of the distribution of landslide deposits in the Mesa Verde area, and as such constitutes an inventory of landslides in the area. The map is suitable for regional planning to identify broad areas where landslide deposits and processes are concentrated. It should not be used as a substitute for detailed site investigations. Specific areas thought to be subject to landslide hazards should be carefully studied before development. Many of the landslides depicted on this map are probably stable as they date to the Pleistocene (approximately 1.8-0.011 Ma) and hence formed under a different climate regime. However, the recognition of these landslides is important because natural and human-induced factors can alter stability. Reduction of lateral support (by excavations or roadcuts), removal of vegetation (by fire or development), or an increase in pore pressure (by heavy rains) may result in the reactivation of landslides or parts of landslides.

  18. High resolution seismic imaging of Rainier Mesa using surface reflection and surface to tunnel tomography

    SciTech Connect

    Majer, E.L.; Johnson, L.R.; Karageorgi, E.K.; Peterson, J.E.

    1994-06-01

    In the interpretation of seismic data to infer properties of an explosion source, it is necessary to account for wave propagation effects. In order to understand and remove these propagation effects, it is necessary to have a model. An open question concerning this matter is the detail and accuracy which must be present in the velocity model in order to produce reliable estimates in the estimated source properties. While it would appear that the reliability of the results would be directly related to the accuracy of the velocity and density models used in the interpretation, it may be that certain deficiencies in these models can be compensated by the and amount of seismic data which is used in the inversion. The NPE provided an opportunity to test questions of this sort. In August 1993, two high resolution seismic experiments were performed in N-Tunnel and on the surface of Rainier Mesa above it. The first involved a surface-to-tunnel imaging experiment with sources on the surface and receivers in tunnel U12n.23 about 88 meters west of the NPE. It was possible to estimate the apparent average velocity between the tunnel and the surface. In a separate experiment, a high resolution reflection experiment was performed in order to image the lithology in Rainier Mesa. Good quality, broad band, reflections were obtained from depths extending into the Paleozoic basement. A high velocity layer near the surface is underlain by a thick section of low velocity material, providing a nonuniform but low average velocity between the depth of the NPE and the surface.

  19. Water resources of the Santa Ysabel and Mesa Grande Indian Reservations, San Diego County, California

    USGS Publications Warehouse

    Freckleton, John R.

    1981-01-01

    The Santa Ysabel (consisting of three tracts) and Mesa Grande Indian Reservations are in north-central San Diego County, Calif. On both reservations fractured and weathered igneous and metamorphic rocks and alluvium are water bearing; however, no wells are known to derive their water entirely from alluvium. Well yields range from 2.5 to 250 gallons per minute. Springs occur where saturated fractured or weathered material intersects the land surface. Spring discharge ranged from 0 gallon per minute (November 1979) to 9.4 gallons per minute (November 1979). Few data are available for the surface water characteristics of the study area. One-time measurements of discharge at selected stream sites were made in late November 1979 and late May 1980; discharges ranged from less than 0.01 cubic foot per second to an estimated 3 cubic feet per second. Further study of the surface-water systems would provide a basis for estimating their development potential. The existing water-supply development on the Santa Ysabel Indian Reservation is adequate for the present residents. The Mesa Grande reservation was unoccupied in 1952, was reportedly unoccupied in November 1979, and has no developed water supply. Additional water can be developed for both reservations from the igneous and metamorphic rock, from presently undeveloped springs, and from perennial reaches of the larger streams. Except for excessive iron and sodium at some ground-water sites and excessive sodium at a few surface-water sites, the water is of suitable quality for domestic and agricultural use. (USGS)

  20. Completion Report for Well ER-12-3. Corrective Action Unit 99: Rainier Mesa - Shoshone Mountain

    SciTech Connect

    None, None

    2006-05-01

    Well ER-12-3 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office, in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. The well was drilled in March and April 2005 as part of a hydrogeologic investigation program for the Rainier Mesa-Shoshone Mountain Corrective Action Unit. The overall purpose of the well was to gather subsurface data to better characterize the hydrogeology of central Rainier Mesa, especially in the older Tertiary volcanic rocks and Paleozoic sedimentary rocks. The main 47.0-centimeter hole was drilled to a depth of 799.2 meters and cased with 33.97-centimeter casing to 743.1 meters. The hole diameter was then decreased to 31.1 centimeters, and the well was drilled to a total depth of 1,496.0 meters. The completion string consisted of 13.97-centimeter stainless steel casing, with two slotted intervals open to the lower carbonate aquifer, suspended from 19.37-centimeter carbon steel casing. A piezometer string was installed outside the 33.97-centimeter casing to a depth of 467.1 meters to monitor a zone of perched water within the Tertiary volcanic section. Data gathered during and shortly after hole construction include composite drill cuttings samples collected every 3 meters (extra cuttings samples were collected from the Paleozoic rocks for paleontological analyses), sidewall core samples from 35 depths, various geophysical logs, and water level measurements. These data indicate that the well penetrated 674.2 meters of Tertiary volcanic rocks and 821.7 meters of Paleozoic dolomite and limestone. Forty-nine days after the well was completed, but prior to well development and testing, the water level inside the main hole was tagged at the depth of 949.1 meters, and the water level inside the piezometer string was tagged at 379.9 meters.

  1. Naturally weathered feldspar surfaces in the Navajo Sandstone aquifer, Black Mesa, Arizona: Electron microscopic characterization

    USGS Publications Warehouse

    Zhu, Chen; Veblen, D.R.; Blum, A.E.; Chipera, S.J.

    2006-01-01

    Naturally weathered feldspar surfaces in the Jurassic Navajo Sandstone at Black Mesa, Arizona, was characterized with high-resolution transmission and analytical electron microscope (HRTEM-AEM) and field emission gun scanning electron microscope (FEG-SEM). Here, we report the first HRTEM observation of a 10-nm thick amorphous layer on naturally weathered K-feldspar in currently slightly alkaline groundwater. The amorphous layer is probably deficient in K and enriched in Si. In addition to the amorphous layer, the feldspar surfaces are also partially coated with tightly adhered kaolin platelets. Outside of the kaolin coatings, feldspar grains are covered with a continuous 3-5 ??m thick layer of authigenic smectite, which also coats quartz and other sediment grains. Authigenic K-feldspar overgrowth and etch pits were also found on feldspar grains. These characteristics of the aged feldspar surfaces accentuate the differences in reactivity between the freshly ground feldspar powders used in laboratory experiments and feldspar grains in natural systems, and may partially contribute to the commonly observed apparent laboratory-field dissolution rate discrepancy. At Black Mesa, feldspars in the Navajo Sandstone are dissolving at ???105 times slower than laboratory rate at comparable temperature and pH under far from equilibrium condition. The tightly adhered kaolin platelets reduce the feldspar reactive surface area, and the authigenic K-feldspar overgrowth reduces the feldspar reactivity. However, the continuous smectite coating layer does not appear to constitute a diffusion barrier. The exact role of the amorphous layer on feldspar dissolution kinetics depends on the origin of the layer (leached layer versus re-precipitated silica), which is uncertain at present. However, the nanometer thin layer can be detected only with HRTEM, and thus our study raises the possibility of its wide occurrence in geological systems. Rate laws and proposed mechanisms should consider the

  2. Laser direct writing of GaN-based light-emitting diodes—The suitable laser source for mesa definition

    NASA Astrophysics Data System (ADS)

    Moser, Rüdiger; Goßler, Christian; Kunzer, Michael; Köhler, Klaus; Pletschen, Wilfried; Brunne, Jens; Schwarz, Ulrich T.; Wagner, Joachim

    2013-03-01

    The development of a process chain allowing for rapid prototyping of GaN-based light-emitting diodes (LEDs) is presented, which does not rely on photolithography. Structuring of the epitaxial layers is realized by direct-writing laser ablation, allowing a flexible chip layout that can be changed rapidly and at low cost. Besides contact metallization and trench formation, mesa definition is the most critical processing step. For mesa formation and to expose the n-GaN contact layer, the epitaxial grown p-GaN layer together with the active region has to be removed completely without forming cracks or crystal defects in the n-GaN layer or the mesa sidewalls, which would cause sidewall leakage currents. In developing an appropriate laser ablation process that meets these requirements, three different laser systems have been employed in a comparative study. These are a frequency-tripled picosecond (ps) Nd:YVO4 laser emitting at a wavelength of 355 nm and a pulse length of 10 ps and two 20 nanosecond (ns) pulse length laser systems, operating at a wavelength of 248 nm (Excimer laser) and 355 nm (frequency-tripled Nd:YVO4 laser), respectively. First, the laser sources are compared regarding the morphological properties of the resulting laser trenches. Due to band filling effects resulting in optical bleaching of the GaN material when irradiating with ps-laser pulses at 355 nm, the resulting ablation process suffers from cracking. Laser ablation using ns-pulses at both 355 nm and 248 nm leads to crack-free material removal up to a well-defined depth. To keep reverse-bias leakage currents at a level comparable to that of conventional dry-etched mesa-LEDs, subsequent wet etching is essential to remove residues in the mesa-trenches irrespective of the laser source used. Besides wet etching, an additional annealing step has to be applied to mesa-trenches fabricated using ns- and ps-laser pulses at a wavelength of 355 nm. Due to the larger penetration depth at 355 nm, defects

  3. Corrective Action Investigation Plan for Corrective Action Unit 99: Rainier Mesa/Shoshone Mountain, Nevada Test Site, Nevada with Errata and ROTC 1, Rev. No. 0

    SciTech Connect

    McCord, John; Marutzky, Sam

    2004-12-01

    This Corrective Action Investigation Plan (CAIP) was developed for Corrective Action Unit (CAU) 99, Rainier Mesa/Shoshone Mountain. The CAIP is a requirement of the ''Federal Facility Agreement and Consent Order'' (FFACO) agreed to by the State of Nevada, the U.S. Department of Energy (DOE), and the U.S. Department of Defense (DoD) (FFACO, 1996). The FFACO addresses environmental restoration activities at U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO) facilities and sites including the underground testing area(s) of the Nevada Test Site (NTS). This CAIP describes the investigation activities currently planned for the Rainier Mesa/Shoshone Mountain CAU. These activities are consistent with the current Underground Test Area (UGTA) Project strategy described in Section 3.0 of Appendix VI, Revision No. 1 (December 7, 2000) of the FFACO (1996) and summarized in Section 2.1.2 of this plan. The Rainier Mesa/Shoshone Mountain CAU extends over several areas of the NTS (Figure 1-1) and includes former underground nuclear testing locations in Areas 12 and 16. The area referred to as ''Rainier Mesa'' includes the geographical area of Rainier Mesa proper and the contiguous Aqueduct Mesa. Figure 1-2 shows the locations of the tests (within tunnel complexes) conducted at Rainier Mesa. Shoshone Mountain is located approximately 20 kilometers (km) south of Rainier Mesa, but is included within the same CAU due to similarities in their geologic setting and in the nature and types of nuclear tests conducted. Figure 1-3 shows the locations of the tests conducted at Shoshone Mountain. The Rainier Mesa/Shoshone Mountain CAU falls within the larger-scale Rainier Mesa/Shoshone Mountain Investigation Area, which also includes the northwest section of the Yucca Flat CAU as shown in Figure 1-1. Rainier Mesa and Shoshone Mountain lie adjacent to the Timber Mountain Caldera Complex and are composed of volcanic rocks that erupted from the

  4. Contaminant Transport Parameters for the Groundwater Flow and Contaminant Transport Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nye County, Nevada, Revision 0

    SciTech Connect

    Drici, Warda

    2003-08-01

    This report documents the analysis of the available transport parameter data conducted in support of the development of a Corrective Action Unit (CAU) groundwater flow model for Central and Western Pahute Mesa: CAUs 101 and 102.

  5. Hydrologic Data for the Groundwater Flow and Contaminant Transport Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nye County, Nevada, Revision 0

    SciTech Connect

    Drici, Warda

    2004-02-01

    This report documents the analysis of the available hydrologic data conducted in support of the development of a Corrective Action Unit (CAU) groundwater flow model for Central and Western Pahute Mesa: CAUs 101 and 102.

  6. Age constraints for the present fault configuration in the Imperial Valley, California: Evidence for northwestward propagation of the Gulf of California rift system

    NASA Technical Reports Server (NTRS)

    Larsen, Shawn; Reilinger, Robert

    1990-01-01

    Releveling and other geophysical data for the Imperial Valley of southern California suggest the northern section of the Imperial-Brawley fault system, which includes the Mesquite Basin and Brawley Seismic Zone, is much younger than the 4 to 5 million year age of the valley itself. A minimum age of 3000 years is calculated for the northern segment of the Imperial fault from correlations between surface topography and geodetically observed seismic/interseismic vertical movements. Calculations of a maximum age of 80,000 years is based upon displacements in the crystalline basement along the Imperial fault, inferred from seismic refraction surveys. This young age supports recent interpretations of heat flow measurements, which also suggest that the current patterns of seismicity and faults in the Imperial Valley are not long lived. The current fault geometry and basement morphology suggest northwestward growth of the Imperial fault and migration of the Brawley Seismic Zone. It is suggested that this migration is a manifestation of the propagation of the Gulf of California rift system into the North American continent.

  7. Coseismic and postseismic vertical movements associated with the 1940 M7.1 Imperial Valley, California, earthquake

    NASA Technical Reports Server (NTRS)

    Reilinger, R.

    1984-01-01

    Leveling surveys conducted along two routes that cross the Imperial fault in southern California indicate spatially coherent elevation changes attributable to coseismic and postseismic effects of the 1940, M7.1 Imperial Valley earthquake. The 1931-1941 elevation changes are consistent with theoretical models of vertical deformation of an elastic half space for a finite length strike-slip fault, using fault parameters that are consistent with the observed surface offsets following the 1940 earthquake. The elevation changes suggest an earthquake scenario consisting of a large coeismic slip in the southern half of the fault which transferred stress to the northern part as well as to the Brawley fault to the northeast.

  8. Design, fabrication and characterization of mesa combined with JTE termination for high-voltage 4H-SiC PiN diodes

    NASA Astrophysics Data System (ADS)

    Deng, Xiaochuan; Xiao, Han; Wu, Jia; Shen, Huajun; Li, Chengzhan; Tang, Yachao; Zhang, Yourun; Zhang, Bo

    2015-12-01

    Mesa combined with JTE termination structures for high-voltage 4H-SiC PiN diodes are designed, fabricated, and characterized in this paper. Designs based on simulation are performed to investigate the influence of the mesa shape on breakdown for SiC PiN diodes. It is found that a deeper mesa height and a smaller mesa angle contribute to a higher breakdown voltage owing to a smoother and more uniform surface electric field distribution. A maximum reverse blocking voltage of 3.8 kV and an on-state voltage drop of 3.4 V at 100 A/cm2 are obtained from the fabricated diodes with a mesa height of 2.1 μm and a mesa angle of 22°, corresponding to about 80% of a parallel plane breakdown voltage for the drift layer with a thickness of 30 μm. Additionally, the dependence of the breakdown voltage on the JTE length observed in the fabricated diodes shows a good agreement with the simulated results in the trend.

  9. Burning down the brewery: Establishing and evacuating an ancient imperial colony at Cerro Baúl, Peru

    PubMed Central

    Moseley, Michael E.; Nash, Donna J.; Williams, Patrick Ryan; deFrance, Susan D.; Miranda, Ana; Ruales, Mario

    2005-01-01

    Before the Inca reigned, two empires held sway over the central Andes from anno Domini 600 to 1000: the Wari empire to the north ruled much of Peru, and Tiwanaku to the south reigned in Bolivia. Face-to-face contact came when both colonized the Moquegua Valley sierra in southern Peru. The state-sponsored Wari incursion, described here, entailed large-scale agrarian reclamation to sustain the occupation of two hills and the adjacent high mesa of Cerro Baúl. Monumental buildings were erected atop the mesa to serve an embassy-like delegation of nobles and attendant personnel that endured for centuries. Final evacuation of the Baúl enclave was accompanied by elaborate ceremonies with brewing, drinking, feasting, vessel smashing, and building burning. PMID:16293691

  10. [First medical museum of Russia (150-anniversary of the Surgical museum of the Imperial Medical-Surgery Academy)].

    PubMed

    Budko, A A; Gribovskaia, G A; Zhuravlev, D A

    2013-03-01

    The opening in 1863 of the Surgical museum of the Imperial Medical-Surgical Academy was the sign of a new age in the development of medical science. It became the first medical museum in our country. It was the period when similar museums appeared in Europe and America. Thus all over the world were formed the first museums that amassed their collections, the later basis of modem medical museums.

  11. Surface displacement on the Imperial and Superstition Hills faults triggered by the Westmorland, California, earthquake of 26 April 1981

    USGS Publications Warehouse

    Sharp, R.V.; Lienkaemper, J.J.; Rymer, M.J.

    1982-01-01

    Parts of the Imperial and the Superstition Hills faults moved right-laterally at the ground surface at the time of or shortly following the ML 5.6 Westmorland earthquake of 26 April 1981. The displacements occurred prior to any significant aftershocks on either fault and thus are classed as sympathetic. Although the main shock was located in an exceptionally seismogenic part of Imperial Valley, about 20 km distant from either fault, no clear evidence of surface faulting has yet been found in the epicentral area. Horizontal displacement on the Imperial and Superstition Hills faults, southeast and southwest of the epicenter, respectively, reached maxima of 8 mm and 14 mm, and the discontinuous surface ruptures formed along approximately equal lengths of northern segments of the two structures (16.8 km and 15.7 km, respectively). The maximum vertical component of slip on the Imperial fault, 6 ram, was observed 3.4 km north of the point of largest horizontal slip. Vertical movement on the Superstition Hills fault was less than 1 mm. No new displacement was found along the traces of the Brawley fault zone, the San Andreas fault, or the part of the Coyote Creek fault that slipped during the 1968 Borrego Mountain earthquake. A careful search in the epicentral area of the main shock failed to locate any definite evidence of surface faulting. Concentrations of late aftershocks north and northeast of Calipatria near the southeastward projection of the San Andreas fault occurred mostly after our field check; this area was not investigated.

  12. Groundwater, Surface-Water, and Water-Chemistry Data, Black Mesa Area, Northeastern Arizona - 2007-2008

    USGS Publications Warehouse

    Macy, Jamie P.

    2009-01-01

    The N aquifer is an extensive aquifer and the primary source of groundwater in the 5,400-square-mile Black Mesa area in northeastern Arizona. Availability of water is an important issue in northeastern Arizona because of continued water requirements for industrial and municipal use by a growing population and because of low precipitation in the arid climate of the Black Mesa area, which is typically about 6 to 14 inches per year. The U.S. Geological Survey water-monitoring program in the Black Mesa area began in 1971 and provides information about the long-term effects of groundwater withdrawals from the N aquifer for industrial and municipal uses. This report presents results of data collected as part of the monitoring program in the Black Mesa area from January 2007 to September 2008. The monitoring program includes measurements of (1) groundwater withdrawals, (2) groundwater levels, (3) spring discharge, (4) surface-water discharge, and (5) groundwater chemistry. In 2007, total groundwater withdrawals were 4,270 acre-feet, industrial withdrawals were 1,170 acre-ft, and municipal withdrawals were 3,100 acre-ft. Total withdrawals during 2007 were about 41 percent less than total withdrawals in 2005. From 2006 to 2007, however, total withdrawals increased by 4 percent, industrial withdrawals decreased by approximately 2 percent, and total municipal withdrawals increased by 7 percent. From 2007 to 2008, annually measured water levels in the Black Mesa area declined in 6 of 11 wells measured in the unconfined areas of the N aquifer, and the median change was -0.2 feet. Water levels declined in 9 of 18 wells measured in the confined area of the aquifer. The median change for the confined area of the aquifer was -0.2 feet. From the prestress period (prior to 1965) to 2008, the median water-level change for 33 wells in both the confined and unconfined area was -12.9 feet. Median water-level changes were -1.0 feet for 15 wells measured in the unconfined areas and -33

  13. Ground-Water, Surface-Water, and Water-Chemistry Data, Black Mesa Area, Northeastern Arizona - 2006-07

    USGS Publications Warehouse

    Truini, Margot; Macy, J.P.

    2008-01-01

    The N aquifer is the major source of water in the 5,400 square-mile Black Mesa area in northeastern Arizona. Availability of water is an important issue in northeastern Arizona because of continued water requirements for industrial and municipal use and the needs of a growing population. Precipitation in the Black Mesa area is typically about 6 to 14 inches per year. The water-monitoring program in the Black Mesa area began in 1971 and is designed to provide information about the long-term effects of ground-water withdrawals from the N aquifer for industrial and municipal uses. This report presents results of data collected for the monitoring program in the Black Mesa area from January 2006 to September 2007. The monitoring program includes measurements of (1) ground-water withdrawals, (2) ground-water levels, (3) spring discharge, (4) surface-water discharge, and (5) ground-water chemistry. Periodic testing of ground-water withdrawal meters is completed every 4 to 5 years. The Navajo Tribal Utility Authority (NTUA) yearly totals for the ground-water metered withdrawal data were unavailable in 2006 due to an up-grade within the NTUA computer network. Because NTUA data is often combined with Bureau of Indian Affairs data for the total withdrawals in a well system, withdrawals will not be published in this year's annual report. From 2006 to 2007, annually measured water levels in the Black Mesa area declined in 3 of 11 wells measured in the unconfined areas of the N aquifer, and the median change was 0.0 feet. Measurements indicated that water levels declined in 8 of 17 wells measured in the confined area of the aquifer. The median change for the confined area of the aquifer was 0.2 feet. From the prestress period (prior to 1965) to 2007, the median water-level change for 30 wells was -11.1 feet. Median water-level changes were 2.9 feet for 11 wells measured in the unconfined areas and -40.2 feet for 19 wells measured in the confined area. Spring flow was measured

  14. Applications of Geophysical and Geological Techniques to Identify Areas for Detailed Exploration in Black Mesa Basin, Arizona

    SciTech Connect

    George, S.; Reeves, T.K.; Sharma, Bijon; Szpakiewicz, M.

    1999-04-29

    A recent report submitted to the U.S. Department of Energy (DOE) (NIPER/BDM-0226) discussed in considerable detail, the geology, structure, tectonics, and history of oil production activities in the Black Mesa basin in Arizona. As part of the final phase of wrapping up research in the Black Mesa basin, the results of a few additional geophysical studies conducted on structure, stratigraphy, petrophysical analysis, and oil and gas occurrences in the basin are presented here. A second objective of this study is to determine the effectiveness of relatively inexpensive, noninvasive techniques like gravity or magnetic in obtaining information on structure and tectonics in sufficient detail for hydrocarbon exploration, particularly by using the higher resolution satellite data now becoming available to the industry.

  15. GIS surface effects archive of underground nuclear detonations conducted at Yucca Flat and Pahute Mesa, Nevada Test Site, Nevada

    SciTech Connect

    Grasso, D.N.

    2001-11-02

    This report presents a new comprehensive, digital archive of more than 40 years of geologic surface effects maps produced at individual detonation sites throughout the Yucca Flat and Pahute Mesa nuclear testing areas of the Nevada Test Site, Nye County, Nevada. The Geographic Information System (GIS) surface effects map archive on CD-ROM (this report) comprehensively documents the surface effects of underground nuclear detonations conducted at two of the most extensively used testing areas of the Nevada Test Site. Between 1951 and 1992, numerous investigators of the U.S. Geological Survey, the Los Alamos National Laboratory, the Lawrence Livermore National Laboratory, and the Defense Threat Reduction Agency meticulously mapped the surface effects caused by underground nuclear testing. Their work documented the effects of more than seventy percent of the underground nuclear detonations conducted at Yucca Flat and all of the underground nuclear detonations conducted at Pahute Mesa.

  16. Two-dimensional velocity models for paths from Pahute Mesa and Yucca Flat to Yucca Mountain; Yucca Mountain Project

    SciTech Connect

    Walck, M.C.; Phillips, J.S.

    1990-11-01

    Vertical acceleration recordings of 21 underground nuclear explosions recorded at stations at Yucca Mountain provide the data for development of three two-dimensional crystal velocity profiles for portions of the Nevada Test Site. Paths from Area 19, Area 20 (both Pahute Mesa), and Yucca Flat to Yucca Mountain have been modeled using asymptotic ray theory travel time and synthetic seismogram techniques. Significant travel time differences exist between the Yucca Flat and Pahute Mesa source areas; relative amplitude patterns at Yucca Mountain also shift with changing source azimuth. The three models, UNEPM1, UNEPM2, and UNEYF1, successfully predict the travel time and amplitude data for all three paths. 24 refs., 34 figs., 8 tabs.

  17. Completion Report for Well ER-12-4, Corrective Action Unit 99: Rainier Mesa - Shoshone Mountain (includes Errata Sheet)

    SciTech Connect

    U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office; Bechtel Nevada

    2006-05-01

    Well ER-12-4 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office, in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in May 2005, as part of a hydrogeologic investigation program for the Rainier Mesa-Shoshone Mountain Corrective Action Unit in the north-central portion of the Nevada Test Site. The well is located on Rainier/Aqueduct Mesa, northwest of Yucca Flat, within Area 12 of the Nevada Test Site. The well provided information regarding the radiological and physical environment near underground nuclear tests conducted in U12t Tunnel, information on the pre-Tertiary rocks in the area, and depth to the regional water table.

  18. Principal facts for new gravity stations in the Pahute Mesa and Oasis Valley areas, Nye County, Nevada

    SciTech Connect

    Davidson, Jeffrey G.; Hildenbrand, Thoma G.; Mankinen, Edward A.; Roberts, Carter W.

    1998-12-15

    Regional gravity and aeromagnetic maps of the Pahute Mesa and Oasis Valley region indicate the presence of several structures that may influence the flow of groundwater. For example, several prominent linear features expressed by both gravity and aeromagentic data could act either as barriers or conduits for groundwater. The current gravity study was undertaken to better define the boundaries of the interpreted major regional structures in the area.

  19. Plant support capabilities of a geothermal fluid

    SciTech Connect

    Robinson, F.E.; Singh, K.; Berry, W.; Thomas, T.R.

    1980-09-01

    Geothermal fluids and shallow groundwater from Republic Geothermal, Inc. lease area of East Mesa in Imperial County, California were used successfully to irrigate sugar beet, alfalfa, asparagus, date palm, tamarisk, and desert climax vegetation. Chemical characteristics of the two irrigation fluids differed, but total dissolved solids content of the fluids were similar and within the 2000 mg/l range. The geothermal fluid contains elements which could be harmful to irrigated plants or plant consumers.

  20. Reclaiming agricultural drainage water with nanofiltration membranes: Imperial Valley, California, USA

    USGS Publications Warehouse

    Kharaka, Y.K.; Schroeder, R.A.; Setmire, J.G.; ,

    2003-01-01

    We conducted pilot-scale field experiments using nanofiltration membranes to lower the salinity and remove Se, As and other toxic contaminants from saline agricultural wastewater in the Imperial Valley, California, USA. Farmlands in the desert climate (rainfall - 7.4 cm/a) of Imperial Valley cover -200,000 ha that are irrigated with water (-1.7 km3 annually) imported from the Colorado River. The salinity (-850 mg/L) and concentration of Se (-2.5 ??g/L) in the Colorado River water are high and evapotranpiration further concentrates salts in irrigation drainage water, reaching salinities of 3,000-15,000 mg/L TDS and a median Se value of -30 ??g/L. Experiments were conducted with two commercially available nanofiltration membranes, using drainage water of varying composition, and with or without the addition of organic precipitation inhibitors. Results show that these membranes selectively remove more than 95% of Se, SO4, Mo, U and DOC, and -30% of As from this wastewater. Low percentages of Cl, NO3 and HCO3, with enough cations to maintain electrical neutrality also were removed. The product water treated by these membranes comprised more than 90% of the wastewater tested. Results indicate that the treated product water from the Alamo River likely will have less than 0.2 ??g/L Se, salinity of 300-500 mg/L TDS and other chemical concentrations that meet the water quality criteria for irrigation and potable use. Because acceptability is a major issue for providing treated wastewater to urban centers, it may be prudent to use the reclaimed water for irrigation and creation of lower salinity wetlands near the Salton Sea; an equivalent volume of Colorado River water can then be diverted for the use of increasing populations of San Diego and other urban centers in southern California. Nanofiltration membranes yield greater reclaimed-water output and require lower pressure and less pretreatment, and therefore are generally more cost effective than traditional reverse

  1. 48. AUXILIARY CHAMBER (EAST END), VIEW LOOKING EAST SHOWING ELECTRICAL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    48. AUXILIARY CHAMBER (EAST END), VIEW LOOKING EAST SHOWING ELECTRICAL PENETRATION AND AIR LOCK (LOCATION GGG) - Shippingport Atomic Power Station, On Ohio River, 25 miles Northwest of Pittsburgh, Shippingport, Beaver County, PA

  2. 11. OBLIQUE VIEW OF EAST TRUSS AND EAST SIDE OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. OBLIQUE VIEW OF EAST TRUSS AND EAST SIDE OF SOUTH ABUTMENT, SEEN FROM SOUTH BANK OF WINTER'S RUN. - Mitchell's Mill Bridge, Spanning Winter's Run on Carrs Mill Road, west of Bel Air, Bel Air, Harford County, MD

  3. 10. BUILDING: SECOND FLOOR (East Section), VIEW SOUTH: EAST, SOUTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. BUILDING: SECOND FLOOR (East Section), VIEW SOUTH: EAST, SOUTH AND WEST WALLS OF COLD STORAGE, ALSO SHOWING REMNANTS OF COOLING PIPES - Boston Beer Company, 225-249 West Second Street, South Boston, Suffolk County, MA

  4. 29. SECOND FLOOR EAST SIDE APARTMENT EAST BEDROOM INTERIOR. ALUMINUMFRAME ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    29. SECOND FLOOR EAST SIDE APARTMENT EAST BEDROOM INTERIOR. ALUMINUM-FRAME SLIDING-GLASS WINDOWS ARE REPLACEMENTS. VIEW TO NORTHEAST. - Lee Vining Creek Hydroelectric System, Triplex Cottage, Lee Vining Creek, Lee Vining, Mono County, CA

  5. 90. East Haven Tunnel Shaft. East Haven, New Haven Co., ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    90. East Haven Tunnel Shaft. East Haven, New Haven Co., CT. Sec. 4209, MP 77.00 - Northeast Railroad Corridor, Amtrak Route between New York/Connecticut & Connecticut/Rhode Island State Lines, New Haven, New Haven County, CT

  6. 89. East Haven Tunnel. East Haven, New Haven Co., CT. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    89. East Haven Tunnel. East Haven, New Haven Co., CT. Sec. 4209, MP 77.00. - Northeast Railroad Corridor, Amtrak Route between New York/Connecticut & Connecticut/Rhode Island State Lines, New Haven, New Haven County, CT

  7. 35. EAST FRONT OF POWERHOUSE AND CAR BARN: East front ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    35. EAST FRONT OF POWERHOUSE AND CAR BARN: East front of powerhouse and car barn. 'Annex' is right end of building. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

  8. Perspective view looking from the east to the east northeast ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Perspective view looking from the east to the east northeast facade, with Swiss Chalet in background, to replicate the view shown in MD-1109-J-18 - National Park Seminary, Japanese Pagoda, 2805 Linden Lane, Silver Spring, Montgomery County, MD

  9. 3. East side, details of north half of east web; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. East side, details of north half of east web; also details of roadway, railing and overhead bracing; looking northeast - Dodd Ford Bridge, County Road 147 Spanning Blue Earth River, Amboy, Blue Earth County, MN

  10. INTERIOR VIEW OF EAST SIDE WALL AND DOOR, FACING EAST. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR VIEW OF EAST SIDE WALL AND DOOR, FACING EAST. - Douglas Aircraft Company Long Beach Plant, Aircraft Wing & Fuselage Assembly Building, 3855 Lakewood Boulevard, Long Beach, Los Angeles County, CA

  11. Continued investigations of the occurrence of water in Pahute Mesa emplacement holes

    SciTech Connect

    Hershey, R.L.; Brikowski, T.H.

    1995-04-01

    Periodically, water has been observed in emplacement boreholes drilled for underground testing of nuclear weapons at Pahute Mesa, Nevada Test Site, and is often at levels elevated above the predicted local water table. Water which may provide a means to transport residual radionuclides away from weapon tests may originate as fluids introduced during drilling, from naturally perched groundwater draining into the borehole, or from penetration of the local groundwater table. Lithium-bromide (Li-Br) tracer is being used to evaluate both the origin and movement of these borehole waters. The drilling fluid used to drill the final 100 meters of borehole U-19bh was chemically labeled with LiBr tracer. Lack of significant increase in borehole Br inventory over time indicates that standing water in U-9bh is not returned drilling fluid. Possible sources for the standing water are drilling fluid infiltrated above the bottom 100 in or natural water from a perched or shallower-than-expected saturated zone. The minimum detectable Darcy velocity of water passing through U-19bh is 0.3 m/yr. Borehole U-19bk has a water level approximately 50 in above the predicted pre-drilling water level. Initial water samples were collected from U-19bk to characterize the borehole water quality prior to adding the tracer. The major-ion analytical results of U-19bk along with historical water quality analyses of Water Well 20 and water well UE-19c show that all three waters are similar in character and therefore the water in U-19bk may be either residual drilling fluids originating from Water Well 20 and UE-19c or naturally occurring Pahute Mesa groundwater. LiBr tracer was added to the U-19bk borehole and samples for tracer analysis were collected one month later. For the one month period, no detectable loss of Br was observed. Over this short time period, the minimum detectable Darcy velocity is 10.6 m/yr.

  12. East Texas Storytellers.

    ERIC Educational Resources Information Center

    Anderson, Brandi, Ed.

    1987-01-01

    Written and published by the students at Gary High School, Gary, Texas, "Loblolly Magazine" is published twice a year. Issues are frequently devoted to a distant theme. The theme of this issue, "East Texas Storytellers," attempts to capture some of the local color and regional history of eastern Texas. The first article, "Timothy Griffith, Master…

  13. East Texas Quilts.

    ERIC Educational Resources Information Center

    Whiteside, Karen, Ed.

    1986-01-01

    Patchwork quilting is an original folk art in the United States. Pilgrims first used worn out scraps of cloth to make bed covers in an age of scarcity. Featured here are stories on East Texas Quilts, their origins, the love and hard work which goes into the making of a quilt (Ira Barr and others). The techniques needed to construct a quilt are…

  14. Understanding the Middle East.

    ERIC Educational Resources Information Center

    Owen, Evelyn C.

    This nine-week unit on the Middle East for sixth graders was developed as part of a series by the Public Education Religion Studies Center at Wright State University. A major objective is to help students understand and appreciate sacred times and sacred places within this cultural setting. They learn how beliefs and practices cause the people to…

  15. 4. Engine room, east end looking east toward engine #4 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. Engine room, east end looking east toward engine #4 (Enterprise Diesel; reduction gear in foreground; in left rear, two D.C. generators with Ames Ironworks horizontal engine and sturtevant vertical engine - East Boston Pumping Station, Chelsea Street at Chelsea Creek, Boston, Suffolk County, MA

  16. 10. VIEW OF BRIDGE, LOOKING EAST. THE EAST TOWER IS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. VIEW OF BRIDGE, LOOKING EAST. THE EAST TOWER IS SEEN AT THE CENTER OF THE PHOTOGRAPH ON THE SKYLINE, AND THE EAST WALKWAY ABUTMENT IS SEEN AT THE LEFT OF THE VIEW. THE VERTICAL CABLE RUNS FROM THE EYEBOLT TO THE MAIN SUSPENSION CABLE SPACER. February 1987 - Verde River Sheep Bridge, Spanning Verde River (Tonto National Forest), Cave Creek, Maricopa County, AZ

  17. 20. View of south side of East Ward Street east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. View of south side of East Ward Street east of South McDonald Avenue, facing southeast. - Gaskin Avenue Neighborhood, Bounded by Dart Street to east, CSX Railroad to south, Pearl & Madison Avenues to west, & Wilson & Gordon Streets to north, Douglas, Coffee County, GA

  18. 7. View of south side of East Ward Street east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. View of south side of East Ward Street east of South Coweta Avenue, facing southwest. - Gaskin Avenue Neighborhood, Bounded by Dart Street to east, CSX Railroad to south, Pearl & Madison Avenues to west, & Wilson & Gordon Streets to north, Douglas, Coffee County, GA

  19. 17. View of north side of East Ward Street east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. View of north side of East Ward Street east of North McDonald Avenue, facing northwest. - Gaskin Avenue Neighborhood, Bounded by Dart Street to east, CSX Railroad to south, Pearl & Madison Avenues to west, & Wilson & Gordon Streets to north, Douglas, Coffee County, GA

  20. 2. View of north side of East Ward Street east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. View of north side of East Ward Street east of North Coweta Avenue, facing northeast. - Gaskin Avenue Neighborhood, Bounded by Dart Street to east, CSX Railroad to south, Pearl & Madison Avenues to west, & Wilson & Gordon Streets to north, Douglas, Coffee County, GA

  1. 13. View of south side of East Ward Street east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. View of south side of East Ward Street east of Sibett Avenue, facing southwest. - Gaskin Avenue Neighborhood, Bounded by Dart Street to east, CSX Railroad to south, Pearl & Madison Avenues to west, & Wilson & Gordon Streets to north, Douglas, Coffee County, GA

  2. Middle East Respiratory Syndrome (MERS)

    MedlinePlus

    Middle East Respiratory Syndrome Coronavirus; MERS-CoV; Novel coronavirus; nCoV ... Centers for Disease Control and Prevention. Middle East Respiratory Syndrome (MERS): Frequently Asked Questions and Answers. Updated ...

  3. Imperial or postcolonial governance? Dissecting the genealogy of a global public health strategy.

    PubMed

    Brown, Tim; Bell, Morag

    2008-11-01

    During the last decades of the 20th century it became increasingly apparent that the inter-relationship between globalisation and health is extremely complex. This complexity is highlighted in debates surrounding the re-emergence of infectious diseases, where it is recognised that the processes of globalisation have combined to create the conditions where once localised, microbial hazards have come to pose a threat to many western nations. By contrast, in an emerging literature relating to the epidemic of non-communicable diseases, and reflected in the WHO 'Global strategy on diet, physical activity and health', it is the so-called 'western lifestyle' that has been cast as the main threat to a population's health. This paper explores critically global responses to this development. Building on our interest in questions of governance and the ethical management of the healthy body, we examine whether the global strategy, in seeking to contain the influence of a 'western lifestyle', also promotes contemporary 'western-inspired' approaches to public health practices. The paper indicates that a partial reading of the WHO strategy suggests that certain countries, especially those outside the West, are being captured or 'enframed' by the integrative ambitions of a western 'imperial' vision of global health. However, when interpreted critically through a postcolonial lens, we argue that 'integration' is more complex, and that the subtle and dynamic relations of power that exist between countries of the West/non-West, are exposed. PMID:18771835

  4. Irrigation runoff insecticide pollution of rivers in the Imperial Valley, California (USA).

    PubMed

    de Vlaming, V; DiGiorgio, C; Fong, S; Deanovic, L A; de la Paz Carpio-Obeso, M; Miller, J L; Miller, M J; Richard, N J

    2004-11-01

    The Alamo and New Rivers located in the Imperial Valley, California receive large volumes of irrigation runoff and discharge into the ecologically sensitive Salton Sea. Between 1993 and 2002 we conducted a series of studies to assess water quality using three aquatic species: a cladoceran (Ceriodaphnia dubia), a mysid (Neomysis mercedis), and a larval fish (Pimephales promelas). Although no mortality was observed with the P. promelas, high-level toxicity to the invertebrate species was documented in samples from both rivers during many months of each year. Toxicity identifications and chemical analyses identified the organophosphorus insecticides (OP), chlorpyrifos and diazinon, as the cause of C. dubia toxicity. The extent of the C. dubia mortality was highly correlated with quantities of these OPs applied in the river watersheds. C. dubia mortality occurred during more months of our 2001/2002 study than in the 1990s investigations. During 2001/2002, the extensive C. dubia mortality observed in New River samples was caused by OP insecticide pollution that originated from Mexico. Mortality to N. mercedis in New River samples was likely caused by contaminants other than OP insecticides. Our studies document OP insecticide-caused pollution of the Alamo River over a 10-year period and provide the necessary information for remediation efforts. PMID:15312936

  5. Assessment of lead exposure in Spanish imperial eagle (Aquila adalberti) from spent ammunition in central Spain

    USGS Publications Warehouse

    Fernandez, Julia Rodriguez-Ramos; Hofle, Ursula; Mateo, Rafael; de Francisco, Olga Nicolas; Abbott, Rachel; Acevedo, Pelayo; Blanco, Juan-Manuel

    2011-01-01

    The Spanish imperial eagle (Aquila adalberti) is found only in the Iberian Peninsula and is considered one of the most threatened birds of prey in Europe. Here we analyze lead concentrations in bones (n = 84), livers (n = 15), primary feathers (n = 69), secondary feathers (n = 71) and blood feathers (n = 14) of 85 individuals collected between 1997 and 2008 in central Spain. Three birds (3.6%) had bone lead concentration > 20 (mu or u)g/g and all livers were within background lead concentration. Bone lead concentrations increased with the age of the birds and were correlated with lead concentration in rachis of secondary feathers. Spatial aggregation of elevated bone lead concentration was found in some areas of Montes de Toledo. Lead concentrations in feathers were positively associated with the density of large game animals in the area where birds were found dead or injured. Discontinuous lead exposure in eagles was evidenced by differences in lead concentration in longitudinal portions of the rachis of feathers.

  6. Traumatic injuries and imperialism: the effects of Egyptian colonial strategies at Tombos in upper Nubia.

    PubMed

    Buzon, Michele R; Richman, Rebecca

    2007-06-01

    As circumstances of conquest change, leaders of empires must adapt their colonial strategies in order to be successful. One example of such modification in approach is the shift from Middle Kingdom to New Kingdom Egyptian colonial activities in Nubia. During the Middle Kingdom (2050-1650 BC) Egypt used aggressive military campaigns to subdue the strong Nubian polity at Kerma, resulting in the construction of fortresses and many victory stelae. In the subsequent New Kingdom period (1550-1050 BC) during which the Egyptian administration succeeded in occupying nearly all of Nubia, changes were necessary in conquest strategies. Diplomacy and cooperation may have replaced military action as mechanisms of control. This article investigates changes in imperial policy through the examination of traumatic injuries in human skeletal remains. Patterns of injuries in a sample from the site of Tombos, an Egyptian colonial cemetery in Nubia dating to the New Kingdom period, are compared with data on the patterns of injuries from Kerma, a cemetery dating to the Middle Kingdom period, published by Judd (2004). Analysis indicates a decrease in the level of traumatic injuries from Kerma to Tombos supporting the idea that through time the Egyptian administration modified their colonial strategy toward more nonviolent means. This article presents data on differences in the patterns of injury at Tombos and Kerma and explores possible explanations for this variation.

  7. Imperial or postcolonial governance? Dissecting the genealogy of a global public health strategy.

    PubMed

    Brown, Tim; Bell, Morag

    2008-11-01

    During the last decades of the 20th century it became increasingly apparent that the inter-relationship between globalisation and health is extremely complex. This complexity is highlighted in debates surrounding the re-emergence of infectious diseases, where it is recognised that the processes of globalisation have combined to create the conditions where once localised, microbial hazards have come to pose a threat to many western nations. By contrast, in an emerging literature relating to the epidemic of non-communicable diseases, and reflected in the WHO 'Global strategy on diet, physical activity and health', it is the so-called 'western lifestyle' that has been cast as the main threat to a population's health. This paper explores critically global responses to this development. Building on our interest in questions of governance and the ethical management of the healthy body, we examine whether the global strategy, in seeking to contain the influence of a 'western lifestyle', also promotes contemporary 'western-inspired' approaches to public health practices. The paper indicates that a partial reading of the WHO strategy suggests that certain countries, especially those outside the West, are being captured or 'enframed' by the integrative ambitions of a western 'imperial' vision of global health. However, when interpreted critically through a postcolonial lens, we argue that 'integration' is more complex, and that the subtle and dynamic relations of power that exist between countries of the West/non-West, are exposed.

  8. Doctors in Court, Honour, and Professional Ethics: Two Scandals in Imperial Germany*

    PubMed Central

    Maehle, Andreas-Holger

    2013-01-01

    Summary Comparing two public medical affairs which involved disciplinary proceedings and libel actions, one from Bavaria and one from Prussia, this article analyzes the dynamics behind legal conflicts over doctors’ professional ethics in Imperial Germany. In both the case of Dr Maurice Hutzler, who committed suicide after conflicts with senior colleagues at the Gisela Children’s Hospital and a sentence of the court of honour of the Munich Medical District Society, and the Berlin ‘patient trade’ affair, in which the medical professors Ernst von Leyden, Hermann Senator, Karl Anton Ewald and Carl Posner were accused of having made payments to middlemen for bringing them lucrative private patients, notions of personal and professional honour played a central role. The Munich case highlighted shortcomings of the Bavarian medical court of honour system, which was less developed than its Prussian counterpart. The analysis of the two cases suggests that the ethics of medical practice in early twentieth-century Germany should be viewed as part of a culture of honour. PMID:22303773

  9. Geology of the south-central part of the New River Mesa Quadrangle, Cave Creek area, Maricopa County, Arizona

    USGS Publications Warehouse

    Gomez, Ernest

    1979-01-01

    A small area north of Cave Creek, Arizona, contains key stratigraphic and structural information bearing on the Cenozoic development of the mountain and desert regions of Arizona. The area contains elements of the two physiographic regions. The northern and western parts are high mesas containing flat lying interbedded Tertiary volcanic and sedimentary strata. These deposits can be traced southward across the physiographic boundary where they are tilted and down faulted into the desert region. Seven bedrock units were revealed by geologic mapping at 1:12,000 scale. They are, in ascending stratigraphic order: (1) a basement of Precambrian schist, granitic rock, and diabase (300 meters exposed), (2) fanglomerate derived from the crystalline rocks, of probable early and middle Oligocene age (0-152 m thick), (3) andesite of possible middle Oligocene age (225 m thick), (4) interbedded sediments and volcanics of Oligocene and Miocene age (30-320 m thick), and (5) resistant cliff forming basalt flows of middle Miocene age (125-180 m thick) that cap the high mesas. Regional uplift of an exposed Precambrian terrane occurred ~38-30 m.y. ago, accompanied by erosion of the basement and deposition of fanglomerate. Regional volcanism began ~30 m.y. ago, apparently with the extrusion of andesite, followed by deposition of alkali basaltic flows, tuff, lake beds, and alluvium in one or more irregularly closed basins, formed as a result of faulting and volcanism. A transition from calcalkali and alkali volcanism to olivine basalt volcanism of the Hickey Formation occurred approximately IS m.y. ago. The interval 14.5-11 m.y. saw the deposition of olivine basalt flows of the New River Mesa formation, which cap the high mesas and correlate with basalt of the Hickey Formation. Topographic development of the mountain-desert region boundary occurred with collapse of the basalts of the New River Mesa formation into the desert region. This may have occurred at the time of initial subsidence

  10. An investigation of sulfur concentrations in soils and pine needles in Mesa Verde National Park, Colorado

    SciTech Connect

    Gladney, E.S.; Ferenbaugh, R.W.; Jones, E.A.; Bell, M.G.; Morgan, J.D.; Nelson, L.A.; Lundstrom, C.; Bowker, R.G.

    1993-03-01

    Sulfur measurements in different age groups of pinon pine needles and adjacent soil samples from ten sampling sites at Mesa Verde National Park were determined using combustion elemental analysis and chromatographic techniques. The primary goal was to establish base-line levels for elemental sulfur in the Park. Sulfur levels in foliage and soils were evaluated using analysis of variance techniques. Foliage sulfur concentrations differed significantly among the 10 sampling sites and among trees within sites; however, needles of different ages did not differ significantly in sulfur content. Average soil concentrations were very low, 17% of the average needle concentrations. Soil sulfur concentrations also differed significantly among the 10 sampling sites and at different depths in the soil. No statistical differences were evident in soils sampled at the four compass points (N, S, E, W) around each tree. These differences imply that large numbers of samples are needed to identify small effects from anthropogenic inputs of sulfur into the system or that the effects must be large relative to the differences among sampling sites and individual trees in order to be detected.

  11. Nanoscopic Terraces, Mesas, and Ridges in Freely Standing Thin Films Sculpted by Supramolecular Oscillatory Surface Forces.

    PubMed

    Zhang, Yiran; Yilixiati, Subinuer; Pearsall, Collin; Sharma, Vivek

    2016-04-26

    Freely standing thin liquid films containing supramolecular structures including micelles, nanoparticles, polyelectrolyte-surfactant complexes, and smectic liquid crystals undergo drainage via stratification. The layer-by-layer removal of these supramolecular structures manifests as stepwise thinning over time and a coexistence of domains and nanostructures of discretely different thickness. The layering of supramolecular structures in confined thin films contributes additional non-DLVO, supramolecular oscillatory surface forces to disjoining pressure, thus influencing both drainage kinetics and stability of thin films. Understanding and characterizing the spontaneous creation and evolution of nanoscopic topography of stratifying, freely standing thin liquid films have been long-standing challenges due to the absence of experimental techniques with the requisite spatial (thickness <10 nm) and temporal resolution (<1 ms). Using Interferometry Digital Imaging Optical Microscopy (IDIOM) protocols developed herein, we visualize and characterize size, shape, and evolution kinetics of nanoscopic mesas, terraces, and ridges. The exquisite thickness maps created using IDIOM protocols provide much needed and unprecedented insights into the role of supramolecular oscillatory surface forces in driving growth of such nanostructures as well as in controlling properties and stability of freely standing thin films and, more generally, of colloidal dispersions like foams.

  12. Temporary camps at drill hole U19aq on Pahute Mesa, Nye County, Nevada

    SciTech Connect

    Pippin, L.C.; Reno, R.L.; Henton, G.H.; Hemphill, M.; Lockett, C.L.

    1992-01-01

    The US Department of Energy, Nevada Field Office, has proposed a nuclear test at drill hole U19aq (902100N/585000E, Nevada Coordinate System, Central Zone) on Pahute Mesa, Nevada Test Site, Nevada. In compliance with Section 106 of the National Historic Preservation Act, the DOE/NV had the Quatenary Sciences Center, Desert Research Institute, identify and evaluate the potential effects of this activity on cultural resources. To determine the nature of cultural resources in the area, DRI conducted a Class III intensive archaeological survey of an approximately 1-km[sup 2] area around the drill hole. That survey, conducted in June 1985, located and recorded 20 archaeological sites. Two of those sites, interpreted as temporary camps of ancient hunters and gatherers, covered an extensive portion of the area proposed for nuclear testing. Half the sites were small concentrations of artifacts or isolated artifacts and were collected at the time of their discovery and 10 sites were left in place. Those sites were in danger of being adversely affected by the land-disturbing activities proposed at the drill hole. In August and September 1985, DRI conducted limited test excavations (15 test units) at those sites to further evaluate their scientific significance and to provide information that could be used in designing a plan for data recovery.

  13. Temporary camps at drill hole U19aq on Pahute Mesa, Nye County, Nevada

    SciTech Connect

    Pippin, L.C.; Reno, R.L.; Henton, G.H.; Hemphill, M.; Lockett, C.L.

    1992-12-31

    The US Department of Energy, Nevada Field Office, has proposed a nuclear test at drill hole U19aq (902100N/585000E, Nevada Coordinate System, Central Zone) on Pahute Mesa, Nevada Test Site, Nevada. In compliance with Section 106 of the National Historic Preservation Act, the DOE/NV had the Quatenary Sciences Center, Desert Research Institute, identify and evaluate the potential effects of this activity on cultural resources. To determine the nature of cultural resources in the area, DRI conducted a Class III intensive archaeological survey of an approximately 1-km{sup 2} area around the drill hole. That survey, conducted in June 1985, located and recorded 20 archaeological sites. Two of those sites, interpreted as temporary camps of ancient hunters and gatherers, covered an extensive portion of the area proposed for nuclear testing. Half the sites were small concentrations of artifacts or isolated artifacts and were collected at the time of their discovery and 10 sites were left in place. Those sites were in danger of being adversely affected by the land-disturbing activities proposed at the drill hole. In August and September 1985, DRI conducted limited test excavations (15 test units) at those sites to further evaluate their scientific significance and to provide information that could be used in designing a plan for data recovery.

  14. Moøller polarimetry with polarized atomic hydrogen at MESA

    SciTech Connect

    Bartolomé, P. Aguar; Aulenbacher, K.; Tyukin, V.

    2013-11-07

    A new generation of parity violation (PV) electron scattering experiments are planned to be carried out at the Institut für Kernphysik in Mainz. These experiments will be performed at low energies of 100-200 MeV using the new accelerator MESA (Mainz Energy recovering Superconducting Accelerator). One of the main challenges of such experiments is to achieve an accuracy in beam polarization measurements that must be below 0.5%. This very high accuracy can be reached using polarized atomic hydrogen gas, stored in an ultra-cold magnetic trap, as the target for electron beam polarimetry based on Mo/ller scattering. Electron spin-polarized atomic hydrogen can be stored at high densities of 10{sup 16} cm{sup −2}, over relatively long time periods, in a high magnetic field (8T) and at low temperatures (0.3K). The gradient force splits the ground state of the hydrogen into four states with different energies. Atoms in the low energy states are trapped in the strong magnetic field region whereas the high energy states are repelled and pumped away. The physics of ultra-cold atomic hydrogen in magnetic traps and the status of the Mainz Hydro-Mo/ller project will be presented.

  15. Predicted Geology of the Pahute Mesa-Oasis Valley Phase II Drilling Initiative

    SciTech Connect

    NSTec Environmental Restoration

    2009-04-20

    Pahute Mesa–Oasis Valley (PM-OV) Phase II drilling will occur within an area that encompasses approximately 117 square kilometers (45 square miles) near the center of the Phase I PM-OV hydrostratigraphic framework model area. The majority of the investigation area lies within dissected volcanic terrain between Pahute Mesa on the north and Timber Mountain on the south. This area consists of a complex distribution of volcanic tuff and lava of generally rhyolitic composition erupted from nearby calderas and related vents. Several large buried volcanic structural features control the distribution of volcanic units in the investigation area. The Area 20 caldera, including its structural margin and associated caldera collapse collar, underlies the northeastern portion of the investigation area. The southern half of the investigation area lies within the northwestern portion of the Timber Mountain caldera complex, including portions of the caldera moat and resurgent dome. Another significant structural feature in the area is the west-northwest-trending Northern Timber Mountain moat structural zone, which bisects the northern portion of the investigation area and forms a structural bench. The proposed wells of the UGTA Phase II drilling initiative can be grouped into four generalized volcanic structural domains based on the stratigraphic distribution and structural position of the volcanic rocks in the upper 1,000 meters (3,300 feet) of the crust, a depth that represents the approximate planned total depths of the proposed wells.

  16. Magnetotelluric Data, Rainier Mesa/Shoshone Mountain, Nevada Test Site, Nevada

    USGS Publications Warehouse

    Williams, Jackie M.; Sampson, Jay A.; Rodriguez, Brian D.; Asch, Theodore H.

    2006-01-01

    Introduction: The United States Department of Energy (DOE) and the National Nuclear Security Administration (NNSA) at their Nevada Site Office (NSO) are addressing ground-water contamination resulting from historical underground nuclear testing through the Environmental Management (EM) program and, in particular, the Underground Test Area (UGTA) project. During 2005, the U.S. Geological Survey (USGS), in cooperation with the DOE and NNSA-NSO, collected and processed data from twenty-six magnetotelluric (MT) and audio-magnetotelluric (AMT) sites at the Nevada Test Site. The 2005 data stations were located on and near Rainier Mesa and Shoshone Mountain to assist in characterizing the pre-Tertiary geology in those areas. These new stations extend the area of the hydrogeologic study previously conducted in Yucca Flat. The MT data presented in this report will help refine what is known about the character, thickness, and lateral extent of pre Tertiary confining units. Subsequent interpretation will include a three dimensional (3 D) character analysis and a two-dimensional (2 D) resistivity model. The purpose of this report is to release the MT sounding data. No interpretation of the data is included here.

  17. Keeping Energy Savings in the LOOP: Mesa Lane Partners Case Study

    SciTech Connect

    2013-03-01

    Mesa Lane Partners (MLP) partnered with the U.S. Department of Energy (DOE) to develop and implement solutions to a build a new, low-energy mixed-use building that consumes at least 50% less energy than requirements set by Energy Standard 90.1-2007 of the American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE), the American National Standards Institute (ANSI), and the Illuminating Engineering Society of America (IESNA), as part of DOE’s Commercial Building Partnerships (CBP) Program. Lawrence Berkeley National Laboratory (LBNL) provided technical expertise in support of this DOE program. The privately developed 46,000-square-foot LOOP project, which is intended to provide affordable off-campus student housing in an underserved community next to University of California at Santa Barbara, will contain more than 7,000 square feet of retail space, a roof deck, an event space, a gym, and 48 apartments. The project developer, MLP, is aiming to exceed CBP requirement, targeting energy consumption that is at least 65% less than that required by the standard. If the LOOP meets this goal, it is expected to achieve Leadership in Energy and Environmental Design (LEED) Gold certification.

  18. Moøller polarimetry with polarized atomic hydrogen at MESA

    NASA Astrophysics Data System (ADS)

    Bartolomé, P. Aguar; Aulenbacher, K.; Tyukin, V.

    2013-11-01

    A new generation of parity violation (PV) electron scattering experiments are planned to be carried out at the Institut für Kernphysik in Mainz. These experiments will be performed at low energies of 100-200 MeV using the new accelerator MESA (Mainz Energy recovering Superconducting Accelerator). One of the main challenges of such experiments is to achieve an accuracy in beam polarization measurements that must be below 0.5%. This very high accuracy can be reached using polarized atomic hydrogen gas, stored in an ultra-cold magnetic trap, as the target for electron beam polarimetry based on Mo/ller scattering. Electron spin-polarized atomic hydrogen can be stored at high densities of 1016 cm-2, over relatively long time periods, in a high magnetic field (8T) and at low temperatures (0.3K). The gradient force splits the ground state of the hydrogen into four states with different energies. Atoms in the low energy states are trapped in the strong magnetic field region whereas the high energy states are repelled and pumped away. The physics of ultra-cold atomic hydrogen in magnetic traps and the status of the Mainz Hydro-Mo/ller project will be presented.

  19. Formation of GaP nanocones and micro-mesas by metal-assisted chemical etching.

    PubMed

    Kim, Jaehoon; Oh, Jihun

    2016-02-01

    Metal-assisted chemical etching (MaCE) of a (100) n-type GaP using patterned Pd catalysts in a mixed solution of HF and H2O2 at room temperature is reported for the first time. Various patterns of Pd catalysts, i.e., meshes and patches, with length scales ranging from 200 nm to several μm were used. Depending on the sizes of the Pd catalysts, GaP exhibits two distinctively different MaCE mechanisms: the conventional and inverse MaCE. With Pd nanomeshes, the ordered arrays of GaP nanocones were formed by the preferential removal of GaP directly under the Pd catalysts by the MaCE mechanism. When Pd micro-patches with several μm in length were used, bare GaP uncovered with the Pd patches was selectively dissolved to form GaP micro-mesa structures, following an inverse MaCE mechanism. We attribute these size-dependent etching behaviors to the dissolution limited etching characteristics of GaP during MaCE. Furthermore, we show that etched GaP structures can exhibit both mechanisms when a micro-patterned Pd nanomesh is used. The morphological evolution of etched GaP structures produced by MaCE is also presented. PMID:26780962

  20. Modelling the evolution of solar-mass stars with a range of metallicities using MESA

    NASA Astrophysics Data System (ADS)

    Jones, E. F.; Gore, P. M.

    2015-05-01

    The nuclides 1,2H, 3,4He, 7Li, 7Be, 8B, 12,13C, 13-15N, 14-18O, 17-19F, 18-22Ne, 22Mg, and 24Mg were used in the code package MESA (Modules for Experiments in Stellar Astrophysics)[Paxton] to model a one-solar-mass star with a range of metallicities, z, from 0 to 0.1. On HR diagrams of each star model's luminosity and effective temperature from before zero-age main sequence (pre-ZAMS) to white dwarf, oscillations were noted in the horizontal branch at intervals from z = 0 to 0.0070. At z, = 0, the calculated stellar lifetime is 6.09x109 years. The calculated lifetime of the model stars increases to a maximum of 1.25x1010 years at z = 0.022 and then decreases to 2.59x109 years at z = 0.1. A piecewise fit of the model lifetimes vs. metallicity was obtained.

  1. A comparison of outcomes with coronary artery calcium scanning in Unselected Populations - The Multi-Ethnic Study of Atherosclerosis (MESA) and Heinz Nixdorf Recall Study (HNR)

    PubMed Central

    Budoff, MJ; Möhlenkamp, Stefan; McClelland, Robyn; Delaney, Joseph A.; Bauer, Marcus; Jöckel, Heinz Karl; Kälsch, Hagen; Kronmal, Richard; Nasir, Khurram; Lehmann, Nils; Moebus, Susanne; Mukamal, Ken; Erbel, Raimund

    2013-01-01

    Background The Multi-Ethnic Study of Atherosclerosis (MESA) and the Heinz Nixdorf Recall Study (HNR)) differed in regards to informing physicians and patients of the results of their subclinical atherosclerosis. Objective This study investigates whether the association of coronary artery calcium (CAC) with incident non-fatal and fatal cardiovascular (CVD) events is different among these two large, population-based observational studies. Methods All Caucasian subjects aged 45–75 years, free of baseline cardiovascular disease were included (n=2232 in MESA, n=3119 HNR participants). We studied the association between CAC and event rates at 5 years, including hard cardiac events (MI, cardiac death, resuscitated cardiac arrest), and separately added revascularizations, and strokes (fatal and non-fatal) to determine adjusted hazard ratios (HR). Results Both cohorts demonstrated very low CHD (including revascularization) rates with zero calcium (1.13 and 1.16% over 5 years in MESA and HNR respectively) and increasing significantly in both groups with CAC 100–399 (6.71 and 4.52% in MESA and HNR) and CAC >400 (12.5 and 13.54% in MESA and HNR respectively) and demonstrating strong independent predictive values for scores of 100–399 and >400, despite multivariable adjustment for risk factors. Risk factor adjusted five year revascularization rates were nearly identical for HNR and MESA, and generally low for both studies (1.4% [45/3119] for HNR and 1.9% [43/2232] for MESA) over 5 years. Conclusions Across two culturally diverse populations, CAC >400 is a strong predictor of events. High CAC did not determininistically result in revascularization and knowledge of CAC did not increase revascularizations. PMID:23849491

  2. Assessment of potential migration of radionuclides and trace elements from the White Mesa uranium mill to the Ute Mountain Ute Reservation and surrounding areas, southeastern Utah

    USGS Publications Warehouse

    Naftz, David L.; Ranalli, Anthony J.; Rowland, Ryan C.; Marston, Thomas M.

    2011-01-01

    collected from Entrance Spring also contained elevated concentrations of selenium and vanadium. Sediment samples collected from three ephemeral drainages east of the uranium mill site (including Entrance Spring) contained uranium concentrations exceeding background values downwind of the predominant wind directions at the site. Sediment samples collected from ephemeral drainages on the south and west boundaries of the uranium mill site generally did not exceed background-uranium concentrations. Elevated concentrations of uranium and vanadium, indicating offsite transport, were found in plant tissue samples collected north-northeast, east, and south of the mill site, downwind of 2 Assessment of potential migration of radionuclides and trace elements from the White Mesa uranium mill the predominant wind directions at the site. The uranium and vanadium concentrations in plant tissue samples collected west of the uranium mill site were low. On the basis of the study results, consideration should be given to future monitoring programs in areas surrounding the uranium mill site to address current and future environmental concerns. These potential monitoring programs should consider (1) quarterly monitoring of major- and trace-element concentrations in selected springs and wells; (2) annual monitoring of Entrance Spring for uranium isotopes, delta sulfur-34sulfate, delta oxygen-18, and delta deuterium; (3) annual monitoring of background water quality at selected spring and monitoring well sites; (4) periodic sampling and chemical analyses of sagebrush in areas east of the uranium mill site coupled with off-site fugitive dust monitoring; (5) installation of a new monitoring well upgradient from the East and West wells; (6) the addition of non-routine chemical constituents to ongoing monitoring programs within the uranium mill site that could provide additional insight(s) into potential contaminant sources and processes; and (7) archiving future monitoring data into a maintained

  3. East Siberian Sea, Russia

    NASA Technical Reports Server (NTRS)

    2002-01-01

    The winter sea ice in the east Siberian Sea is looking a bit like a cracked windshield in these true-color Moderate Resolution Imaging Spectroradiometer (MODIS) images from June 16 and 23, 2002. North of the thawing tundra, the sea ice takes on its cracked, bright blue appearance as it thins, which allows the reflection of the water to show through. Numerous still-frozen lakes dot the tundra. Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC

  4. East Asian Journal

    NASA Astrophysics Data System (ADS)

    Lee, Hyung Mok

    2005-06-01

    Astronomical research in Asian Pacific region has been growing rapidly in recent years. However, most important papers have been published in well established existing journals in US and Europe because we do not have high impact international journals in this region. I review the current trends of the local journals of East Asian countries and propose to establish a new regional journal by combining domestic journals.

  5. East Asian observations

    NASA Astrophysics Data System (ADS)

    Stephenson, F. R.

    East Asian observations are of established importance in Applied Historical Astronomy. The earliest astronomical records from this part of the world (China, Japan and Korea) originate from China. These observations, mainly of lunar eclipses, are recorded on oracle bones from the period ca. 1300 - 1050 BC. Virtually all later Chinese and other East Asian astronomical records now exist only in printed copies. The earliest surviving series of solar eclipse observations from any part of the world is contained in the Chunqiu (722 - 481 BC), a chronicle of the Chinese state of Lu. However, not until after 200 BC, with the establishment of a stable empire in China, do detailed astronomical records survive. These are mainly contained in specially compiled astrological treatises in the official dynastic histories. Such records, following the traditional style, extend down to the start of the present century. All classes of phenomena visible to the unaided eye are represented: solar and lunar eclipses, lunar and planetary movements among the constellations, comets, novae and supernovae, meteors, sunspots and the aurora borealis. Parallel, but independent series of observations are recorded in Japanese and Korean history, especially after about AD 800. Sources of Japanese records tend to be more diverse than their Chinese and Korean counterparts, but fortunately Kanda Shigeru (1935) and Ohsaki Shyoji (1994) have made extensive compilations of Japanese astronomical observations down to the 1860s. Throughout East Asia, dates were expressed in terms of a luni-solar calendar.

  6. Integrated Modeling of Water Policy Futures in the Imperial-Mexicali Valleys

    NASA Astrophysics Data System (ADS)

    Kjelland, M. K.; Forster, C. B.; Grant, W. E.; Collins, K.

    2004-12-01

    Divided by an international border, the Imperial-Mexicali Valleys (IMVs) are linked by shared history, natural resources, culture and economy. This region is experiencing changes driven by policy makers both within and outside the IMVs. The largest external decision, the Colorado River Quantification Settlement Agreement (QSA) of 2003, opens the door to a laboratory for studying the consequences of a massive transfer of agricultural water to municipal users. Two irrigation districts, two urban water agencies and the State of California have agreed to a 75 year of more than 30 million acre-feet of Colorado River water from agricultural to urban use. Although Imperial Valley farmers will be compensated for water conservation and land fallowing, the economic, environmental and social consequences are unclear. Farmers who fallow will likely cause a greater impact on local businesses and government than those choosing on-field water conservation. Reduced agricultural water use causes reduced flow of irrigation runoff, at higher salinity than before, to the Salton Sea that, in turn, impacts the population dynamics of Ichthyan and Avian species at the Salton Sea. Municipal wastewater discharged into the New River by Mexicali, Mexico is also an important source of inflow to the Salton Sea that will be reduce by plans to reclaim the wastewater for various uses, including cooling water for two new power plants in the Mexicali. A restoration program is funded to produce a Sea with much reduced surface area. But this approach may, in turn, lead to increases in windblown dust from the dry lakebed that will contribute to an air basin already designated as a federal nonattainment area for particulate emissions. Additional water will be conserved by lining the All American and Coachella canals. But, eliminating seepage from the All American canal reduces groundwater recharge to aquifers used by Mexican farmers. A complex interplay of water-related issues must be accounted for if

  7. Evaluation on chemical stability of lead blast furnace (LBF) and imperial smelting furnace (ISF) slags.

    PubMed

    Yin, Nang-Htay; Sivry, Yann; Guyot, François; Lens, Piet N L; van Hullebusch, Eric D

    2016-09-15

    The leaching behavior of Pb and Zn from lead blast furnace (LBF) and imperial smelting furnace (ISF) slags sampled in the North of France was studied as a function of pHs and under two atmospheres (open air and nitrogen). The leaching of major elements from the slags was monitored as a function of pH (4, 5.5, 7, 8.5 and 10) under both atmospheres for different slag-water interaction times (1 day and 9 days). The leaching results were coupled with a geochemical model; Visual MINTEQ version 3.0, and a detailed morphological and mineralogical analysis was performed on the leached slags by scanning and transmission electron microscopy (SEM and TEM). Significant amounts of Ca, Fe and Zn were released under acidic conditions (pH 4) with a decrease towards the neutral to alkaline conditions (pH 7 and 10) for both LBF and ISF slags. On the other hand, Fe leachability was limited at neutral to alkaline pH for both slags. The concentrations of all elements increased gradually after 216 h compared to initial 24 h of leaching period. The presence of oxygen under open-air atmosphere not only enhanced oxidative weathering but also encouraged formation of secondary oxide and carbonate phases. Formation of carbonates and clay minerals was suggested by Visual MINTEQ which was further confirmed by SEM & TEM. The hydration and partial dissolution of hardystonite, as well as the destabilization of amorphous glassy matrix mainly contributed to the release of major elements, whereas the spinel related oxides were resistant against pH changes and atmospheres within the time frame concerned for both LBF and ISF slags. The total amount of Pb leached out at pH 7 under both atmospheres suggested that both LBF and ISF slags are prone to weathering even at neutral environmental conditions.

  8. Political aspects of geographical information technologies with examples from imperial and post-independence India

    NASA Astrophysics Data System (ADS)

    Dudley, Graham David

    The goal of this research is to examine some of the political dimensions of digital geographical information technologies in order to allow better assessment of their increasing use. Although the conclusions and recommendations are applicable to many regions of the world where these technologies are being introduced, this research derives most of its examples from India. Since at least the early days of British imperialism, decisions regarding land use in India have been informed by various types of information, including cartographic ones. In this thesis it is argued that this information was neither neutral nor objective but rather formed political and ideological statements concerning social relations with the landscape. These statements were reflected both in the nature of the data which were collected and in the ways in which these data were presented. By examining the historical evolution of geographical information technologies in British India and attendant social and environmental impacts, the stage is set for critical speculation on the possible impacts resulting from the introduction of digital geographical information technologies such as remote sensing and geographical information systems. This research draws heavily from the work of historian of cartography Brian Harley. Harley's work is extended to include consideration of the ways in which human-environment relationships are reflected and altered by geographic information technologies. This discussion of possible political and environment implications is influenced by recent literature in the areas of political ecology and the history of cartography. It is concluded that although there are many obstacles including unequal access to the technology, unequal access to information, and issues of control over information creation, which may reinforce and intensify existing social and political inequities, there is cause for some cautious optimism about the potential beneficial outcomes of the use of

  9. Evaluation on chemical stability of lead blast furnace (LBF) and imperial smelting furnace (ISF) slags.

    PubMed

    Yin, Nang-Htay; Sivry, Yann; Guyot, François; Lens, Piet N L; van Hullebusch, Eric D

    2016-09-15

    The leaching behavior of Pb and Zn from lead blast furnace (LBF) and imperial smelting furnace (ISF) slags sampled in the North of France was studied as a function of pHs and under two atmospheres (open air and nitrogen). The leaching of major elements from the slags was monitored as a function of pH (4, 5.5, 7, 8.5 and 10) under both atmospheres for different slag-water interaction times (1 day and 9 days). The leaching results were coupled with a geochemical model; Visual MINTEQ version 3.0, and a detailed morphological and mineralogical analysis was performed on the leached slags by scanning and transmission electron microscopy (SEM and TEM). Significant amounts of Ca, Fe and Zn were released under acidic conditions (pH 4) with a decrease towards the neutral to alkaline conditions (pH 7 and 10) for both LBF and ISF slags. On the other hand, Fe leachability was limited at neutral to alkaline pH for both slags. The concentrations of all elements increased gradually after 216 h compared to initial 24 h of leaching period. The presence of oxygen under open-air atmosphere not only enhanced oxidative weathering but also encouraged formation of secondary oxide and carbonate phases. Formation of carbonates and clay minerals was suggested by Visual MINTEQ which was further confirmed by SEM & TEM. The hydration and partial dissolution of hardystonite, as well as the destabilization of amorphous glassy matrix mainly contributed to the release of major elements, whereas the spinel related oxides were resistant against pH changes and atmospheres within the time frame concerned for both LBF and ISF slags. The total amount of Pb leached out at pH 7 under both atmospheres suggested that both LBF and ISF slags are prone to weathering even at neutral environmental conditions. PMID:27240207

  10. Building Baluchitherium and Indricotherium: imperial and international networks in early-twentieth century paleontology.

    PubMed

    Manias, Chris

    2015-01-01

    Over the first decades of the twentieth century, the fragmentary remains of a huge prehistoric ungulate were unearthed in scientific expeditions in India, Turkestan and Mongolia. Following channels of formal and informal empire, these were transported to collections in Britain, Russia and the United States. While striking and of immense size, the bones proved extremely difficult to interpret. Alternately naming the creature Paraceratherium, Baluchitherium and Indricotherium, paleontologists Clive Forster-Cooper, Alexei Borissiak and Henry Fairfield Osborn struggled over the reconstruction of this gigantic fossil mammal. However, despite these problems, shared work on the creature served as a focus for collaboration and exchange rather than rivalry between these three scientific communities. Not only did the initial interpretation and analysis depend on pre-existing connections between British and American paleontological institutions, but the need for comparative material, recognition and contacts brought British and American scholars into communication and exchange with their counterparts in the Soviet Union. This article examines these processes. It first uses these excavations as a comparative case-study of different manifestations of colonial science in this period, examining how scholars in the Britain, the Russian Empire and the United States used formal and informal colonial links to Asia to pursue new research. It then moves to examine how the common problem of reconstructing this giant animal drew metropolitan scientific communities together, at least for a time. The construction of the Baluchitherium and Indricotherium illustrates the drives to expand research both imperially and internationally in the early-twentieth century, but also the continual problems in resources, institutionalization, transport and communication that could run up against scientific work.

  11. Vaccination policy against smallpox, 1835-1914: a comparison of England with Prussia and Imperial Germany.

    PubMed

    Hennock, E P

    1998-04-01

    There are three identifiable phases in comparing vaccination policy in England, Prussia and Imperial Germany. (1) Prior to the 1870's the tradition of medical police in Prussia resulted in the vaccination of the population being treated as a State responsibility earlier than in England and provided an appropriate administrative framework. The administrative pressure that could be exerted persuaded the Prussian authorities that legislation to make vaccination compulsory was unnecessary. In contrast, England and Wales lacked both the tradition and administrative structures of a medical police. Legislation (1840, 1853) for free and universal infant vaccination was followed by radical ideological and administrative innovation. (2) From 1875 to 1889 both countries provided free and compulsory vaccination for all. In England this was limited to infants; in Germany including Prussia, it included the re-vaccination of children. (3) After 1889 England and Germany began to diverge more sharply. In England vaccination rates fell and after 1898 conscientious objectors were excused from having to have their children vaccinated. Germany retained compulsory vaccination and rates in the two countries increasingly diverged. England came to rely on the local public health administration for the surveillance and containment of smallpox, including selective vaccination of contacts. Despite these differences smallpox mortality dropped sharply in both countries, although in Germany somewhat earlier. The English reliance on surveillance and containment prefigures that of the WHO in the eradication of smallpox in the Third World. It suggests that the emphasis on the importance of high levels of mass vaccination in the German literature should perhaps be revised.

  12. Characterization of gallium arsenide X-ray mesa p-i-n photodiodes at room temperature

    NASA Astrophysics Data System (ADS)

    Lioliou, G.; Meng, X.; Ng, J. S.; Barnett, A. M.

    2016-03-01

    Two GaAs mesa p+-i-n+ photodiodes intended for photon counting X-ray spectroscopy, having an i layer thickness of 7 μm and diameter of 200 μm, have been characterized electrically, for their responsivity at the wavelength range 580 nm to 980 nm and one of them for its performance at detection of soft X-rays, at room temperature. Dark current and capacitance measurements as a function of applied forward and reverse bias are presented. The results show low leakage current densities, in the range of nA/cm2 at the maximum internal electric field (22 kV/cm). The unintentional doping concentration of the i layer, calculated from capacitance measurements, was found to be <1014 cm-3. Photocurrent measurements were performed under visible and near infrared light illumination for both diodes. The analysis of these measurements suggests the presence of a non-active (dead) layer (0.16 μm thickness) at the p+ side top contact interface, where the photogenerated carriers do not contribute to the photocurrent, possibly due to recombination. One of the diodes, D1, was also characterized as detector for room temperature photon counting X-ray spectroscopy; the best energy resolution achieved (FWHM) at 5.9 keV was 745 eV. The noise analysis of the system, based on spectra obtained at different shaping times and applied reverse biases, showed that the dominant source of noise is the dielectric noise. It was also calculated that there was at least (165±24) eV charge trapping noise at 0 V.

  13. Temperature dependent characterization of gallium arsenide X-ray mesa p-i-n photodiodes

    NASA Astrophysics Data System (ADS)

    Lioliou, G.; Meng, X.; Ng, J. S.; Barnett, A. M.

    2016-03-01

    Electrical characterization of two GaAs p+-i-n+ mesa X-ray photodiodes over the temperature range 0 °C to 120 °C together with characterization of one of the diodes as an X-ray detector over the temperature range 0 °C to 60 °C is reported as part of the development of photon counting X-ray spectroscopic systems for harsh environments. The randomly selected diodes were fully etched and unpassivated. The diodes were 200 μm in diameter and had 7 μm thick i layers. The leakage current density was found to increase from (3 ± 1) nA/cm-2 at 0 °C to (24.36 ± 0.05) μA/cm-2 at 120 °C for D1 and from a current density smaller than the uncertainty (0.2 ± 1.2) nA/cm-2 at 0 °C to (9.39 ± 0.02) μA/cm-2 at 120 °C for D2 at the maximum investigated reverse bias (15 V). The best energy resolution (FWHM at 5.9 keV) was achieved at 5 V reverse bias, at each temperature; 730 eV at 0 °C, 750 eV at 20 °C, 770 eV at 40 °C, and 840 eV at 60 °C. It was found that the parallel white noise was the main source of the photopeak broadening only when the detector operated at 60 °C, at 5 V, 10 V, and 15 V reverse bias and at long shaping times (>5 μs), whereas the sum of the dielectric noise and charge trapping noise was the dominant source of noise for all the other spectra.

  14. Geology and petrogenesis of the Kirkpatrick Basalt, Pain Mesa and Solo Nunatak, northern Victoria Land, Antarctica

    SciTech Connect

    Mensing, T.M.

    1987-01-01

    The flows on Pain Mesa were divided into a Lower Suite and an Upper Suite based on differences in their chemical compositions. The Upper Suite has higher concentrations of SiO/sub 2/, alkalies, total Fe, MnO, TiO/sub 2/, and P/sub 2/O/sub 5/ than the Lower Suite. In addition, the flows of the Upper Suite are homogeneous in chemical composition compared to the Lower Suite which is differentiated. The isotope compositions of Sr and O of the Lower Suite are positively correlated which indicates that the magma was contaminated by crustal material. The isotopic and chemical compositions of the flows of the Lower Suite were explained by fractional crystallization and simultaneous assimilation of a crustal contaminant. The initial Sr isotope ratios of the Upper Suite, calculated for an assumed age of 175 Ma, were lower than those of the Lower Suite, and are not constant. However, by lowering the assumed age of the Upper Suite to 92 Ma the range of the initial Sr-isotope ratios was greatly reduced. Paleomagnetic results and K-Ar dating of Ferrar rocks at the Litell Rocks Nunatak in northern Victoria Land also support the hypothesis that the Upper Suite is Cretaceous in age. The magma source of both suites has elevated /sup 87/Sr//sup 86/Sr ratios compared to normal mantle values because of prior enrichment in Rb. The magma source was enriched in Rb about 475 Ma years ago. This data coincides with the Ross Orogeny which may reflect a causal relationship between these events. The occurrence of igneous activity in northern Victoria Land and Marie Byrd Land were juxtaposed during the Mesozoic Era but were later separated as a result of major right lateral displacement along the Transantarctic rift system.

  15. Weight loss and progressive left ventricular remodelling: The Multi-Ethnic Study of Atherosclerosis (MESA)

    PubMed Central

    Shah, Ravi V; Murthy, Venkatesh L; Abbasi, Siddique A; Eng, John; Wu, Colin; Ouyang, Pamela; Kwong, Raymond Y; Goldfine, Allison; Bluemke, David A; Lima, Joao; Jerosch-Herold, Michael

    2016-01-01

    Aims Impact of weight loss on cardiac structure has not been extensively investigated in large, multi-ethnic, community-based populations. We investigated the longitudinal impact of weight loss on cardiac structure by cardiac magnetic resonance (CMR). Methods and results 2351 participants in the Multi-Ethnic Study of Atherosclerosis (MESA) who underwent CMR at Exam 1 (2002) and Exam 5 (2011) were included. Primary outcomes were percentage change in LV mass (indexed to height) and LV mass-to-volume ratio (concentric LV remodelling). Multivariable linear regression was used to measure the association between outcomes and weight change. At median 9.4 years' follow-up, 639 individuals (27%) experienced >5% weight loss (median 6.9 kg) and 511 (22%) had >5% weight gain (median 6.4 kg). A >5% weight gain was associated with the greatest increase in LV mass (+5.4% median) and LV mass-to-volume ratio (+12.2% median). Adjusting for medications, hypertension/diabetes (and change in these risk factors), age, race and other risk factors, every 5% weight loss was associated with a 1.3% decrease in height-indexed LV mass and 1.3% decrease in LV mass-to-volume ratio (p <0.0001). There was no effect modification/confounding by age, race, gender or baseline BMI. Change in LV mass-to-volume ratio was roughly linear, specifically for modest degrees of weight loss (−10% to +10%). Change in LV mass was linear with weight loss, suggesting no threshold of weight loss is needed for LV mass regression. Conclusions In a large multi-ethnic population, weight loss is associated with beneficial effects on cardiac structure, independent of age, race, gender, BMI and obesity-related cardiometabolic risk. There is no threshold of weight loss required to produce these effects. PMID:25009171

  16. Assessment of the impact on crops of effluent gases from geothermal energy development in the Imperial Valley, California

    SciTech Connect

    Kercher, J.R.

    1982-01-01

    The potential impact of regionally dispersed sources of geothermal gaseous effluents on crops in the Imperial Valley was assessed. A detailed model of the photosynthesis and growth of sugar beets fumigated by H/sub 2/S and CO/sub 2/ and generalized from the model calculations to other crops was used. Model calculations were made with estimates of time series of expected ground-level concentrations of H/sub 2/S and CO/sub 2/ calculated by the air quality assessment element of the Imperial Valley Environmental Project (IVEP) at 22 locations around the valley. The model calculations also used time series data of meteorological variables such as air temperature, solar radiation, and relative humidity, which were measured by the air quality baseline element in the field of the Imperial Valley. Results indicate that, in the absence of interactions with other ambient pollutant gases, all location would experience an increase (from slight to significant) in total growth of sugar beets. Seven locations will experience an increase of at least 10%. The emissions rate at which negative effects cancel out the benefits of H/sub 2/S fertilization was calculated; in the worst case, emission rates are expected to be no more than 1/13 of this crossover rate. The expected emission rate will be less than that necessary for negative effects on the most sensitive species (such as alfalfa) by a factor of 4. Similar results for other crops are summarized in the report. If CO/sub 2/ emissions are increased proportionately, the dominance of deleterious effects is not expected to occur, even under maximum development as set forth in IVEP scenario projections. 8 figures, 6 tables.

  17. Anomalous record of October 15, 1979, Imperial Valley, California, earthquake from Coachella Canal Engine House No. 4

    USGS Publications Warehouse

    Bycroft, G.N.

    1981-01-01

    A recording obtained at the Coachella Canal Engine House No. 4 of the October 15, 1979, Imperial Valley earthquake shows a dominant 2 Hz frequency. This feature is very unusual and an attempt has been made to determine if the recording is real or spurious. As the pumping station is a small heavily constructed bunker type of structure located on material of low shear wave velocity it was considered likely that soil-structure interaction might be responsible for the 2 Hz component. However, both an experimental and theoretical investigation fail to establish this. This report describes the theoretical investigation. The experimental investigation is described in a separate open-file report.

  18. Simulation of five ground-water withdrawal projections for the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona

    USGS Publications Warehouse

    Brown, J.G.; Eychaner, J.H.

    1988-01-01

    The N Aquifer is the main source of water in the 5,400 sq mi Black Mesa area in the Navajo and Hopi Indian Reservations in northeastern Arizona. Water in the aquifer is under confined conditions in the central 3,300 sq mi of the area. Maximum saturated thickness is about 1,050 ft. Annual groundwater withdrawals from 1972 through 1986 averaged 5,480 acre-ft and included 3,820 acre-ft used to operate a coal mine on Black Mesa. As a result, water levels have declined in a large part of the aquifer. The coal company has applied for a permanent permit under the Surface Mining Control and Reclamation Act of 1977. An existing mathematical model of the aquifer in the Black Mesa area was converted to a newer model program and recalibrated by using revised estimates of selected aquifer parameters and a finer spatial grid. The model was used to simulate four groundwater withdrawal alternatives that combined the existing and proposed mining plans with projected constant or increasing pumpage for nearby communities. A fifth alternative combined increasing community pumpage with no mine withdrawals and was used as a basis for comparison. Simulated water levels for the year 2031 in the coal-lease area are projected to be 60 ft lower than in 1985 for the proposed mining plan combined with growing community pumpage and > 100 ft lower than predevelopment water levels over an area of 1,660 sq mi. Groundwater would rise to within 100 ft of predevelopment levels < 10 yr after mine withdrawals cease. Withdrawals at the mine were a minor factor in determining simulated water levels at most communities in the study area. Water levels at Tuba City were not affected by mine pumpage in any projection. (Author 's abstract)

  19. TYBO/BENHAM: Model Analysis of Groundwater Flow and Radionuclide Migration from Underground Nuclear Tests in Southwestern Pahute Mesa, Nevada

    SciTech Connect

    Andrew Wolfsberg; Lee Glascoe; Guoping Lu; Alyssa Olson; Peter Lichtner; Maureen McGraw; Terry Cherry; Guy Roemer

    2002-09-01

    Recent field studies have led to the discovery of trace quantities of plutonium originating from the BENHAM underground nuclear test in two groundwater observation wells on Pahute Mesa at the Nevada Test Site. These observation wells are located 1.3 km from the BENHAM underground nuclear test and approximately 300 m from the TYBO underground nuclear test. In addition to plutonium, several other conservative (e.g. tritium) and reactive (e.g. cesium) radionuclides were found in both observation wells. The highest radionuclide concentrations were found in a well sampling a welded tuff aquifer more than 500m above the BENHAM emplacement depth. These measurements have prompted additional investigations to ascertain the mechanisms, processes, and conditions affecting subsurface radionuclide transport in Pahute Mesa groundwater. This report describes an integrated modeling approach used to simulate groundwater flow, radionuclide source release, and radionuclide transport near the BENHAM and TYBO underground nuclear tests on Pahute Mesa. The components of the model include a flow model at a scale large enough to encompass many wells for calibration, a source-term model capable of predicting radionuclide releases to aquifers following complex processes associated with nonisothermal flow and glass dissolution, and site-scale transport models that consider migration of solutes and colloids in fractured volcanic rock. Although multiple modeling components contribute to the methodology presented in this report, they are coupled and yield results consistent with laboratory and field observations. Additionally, sensitivity analyses are conducted to provide insight into the relative importance of uncertainty ranges in the transport parameters.

  20. An Investigation of Amphitheater-Headed Canyon Distribution, Morphology Variation, and Longitudinal Profile Controls in Escalante and Tarantula Mesa, Utah.

    NASA Astrophysics Data System (ADS)

    Ryan, A. J.; Whipple, K. X.

    2014-12-01

    Amphitheater-headed canyons are primarily distinguished from typical fluvial channels by their abrupt headwall terminations. A key goal in the study of river canyons is to establish a reliable link between form and formation processes. This is of particular significance for Mars, where, if such links can be established, amphitheater-headed canyons could be used to determine ancient erosion mechanisms and, by inference, climate conditions. Type examples in arid regions on Earth, such as in Escalante River, Utah, previously have been interpreted as products of groundwater seepage erosion. We investigate amphitheater-headed canyons in Escalante and Tarantula Mesa where variations in canyon head morphology may hold clues for the relative roles of rock properties and fluvial and groundwater processes. In lower Escalante, amphitheaters are only present where canyons have breached the Navajo Sandstone - Kayenta Formation contact. In some canyons, amphitheater development appears to have been inhibited by an abundance of coarse bedload. In Tarantula Mesa, canyons have a variety of headwalls, from amphitheaters to stepped knickzones. Headwall morphology distribution is directly related to the spatially variable presence of knickpoint-forming, fine-grained interbeds within cliff-forming sandstones. Amphitheaters only form where the sandstone unit is undisrupted by these interbeds. Finally, most canyons in Escalante and Tarantula Mesa, regardless of substrate lithology, amphitheater presence, or groundwater spring intensity, are well described by a slope-area power law relationship with regionally constant concavity and normalized steepness indices. This suggests that all channels here are subject to the same erosion rates, independent of groundwater weathering intensity. Thus: 1) variations in canyon headwall form do not necessary relate to differences in fluvial history, 2) stratigraphic variations are clearly of importance in sedimentary canyon systems, and 3) although

  1. Micrometeorological and Soil Data for Calculating Evapotranspiration for Rainier Mesa, Nevada Test Site, Nevada, 2002-05

    USGS Publications Warehouse

    DeMeo, Guy A.; Flint, Alan L.; Laczniak, Randell J.; Nylund, Walter E.

    2006-01-01

    Micrometeorological and soil-moisture data were collected at two instrumented sites on Rainier Mesa at the Nevada Test Site, January 1, 2002 - August 23, 2005. Data collected at each site include net radiation, air temperature, and relative humidity at two heights; wind speed and direction; subsurface soil heat flux; subsurface soil temperature; volumetric soil water; and matric water potential. These data were used to estimate 20-minute average and daily average evapotranspiration values. The data presented in this report are collected and calculated evapotranspiration rates.

  2. Evaluation of possible alternatives to lower the high water table of St. Charles Mesa, Pueblo County, Colorado

    USGS Publications Warehouse

    Brendle, Daniel L.

    2002-01-01

    St. Charles Mesa, an upland terrace southeast of Pueblo, Colorado, has become increasingly urbanized as cultivated fields have been subdivided and converted to residential areas. In some areas, the water table in the terrace alluvial aquifer underlying St. Charles Mesa is very shallow. Bessemer Ditch, which delivers irrigation water to farms on the mesa and other areas of the lower Arkansas River Valley, traverses St. Charles Mesa along its southern side and is the principal source of recharge to the terrace alluvial aquifer. The ground-water flow system was assumed to be in a state of dynamic equilibrium (steady-state condition) for this study. A steady-state ground-water flow model of the terrace alluvial aquifer was constructed and calibrated. The model was run in transient state to evaluate possible alternatives of lowering the water table. The possible alternatives evaluated were (1) reducing areal recharge by reducing recharge to irrigated areas by 25 percent, (2) lining Bessemer Ditch from (a) Aspen Street to 21st Lane; (b) Aspen Street to 23rd Lane; (c) Aspen Street to 25th Lane; and (d) Aspen Street to Nicholson Road, (3) installing two drains at a depth of 10 feet below land surface upgradient from the high water table areas, and (4) installing 22 dewatering wells within the high water table areas, each pumping at 80 gallons per minute. All alternatives evaluated were at least partly effective in lowering the water table. As the simulated extent of Bessemer Ditch lining was increased, the extent and magnitude of simulated water-table declines also increased. The maximum simulated declines in the water table were 3 feet when simulated areal recharge to irrigated areas was reduced by 25 percent, 29 feet when lining of Bessemer Ditch was simulated from Aspen Street to Nicholson Road, 6.8 feet when two drains were simulated at 10-foot depth, and 14.4 feet when 22 dewatering wells, each pumping at 80 gallons per minute, were simulated. Lining Bessemer Ditch

  3. Micrometeorological and Soil Data for Calculating Evapotranspiration for Rainier Mesa, Nevada Test Site, Nevada 2002-05.

    SciTech Connect

    Guy A. DeMeo; Alan L. Flint; Randell J. Laczniak; Walter E. Nylund

    2006-12-28

    Micrometeorological and soil-moisture data were collected at two instrumented sites on Rainier Mesa at the Nevada Test Site, January 1, 2002/August 23, 2005. Data collected at each site include net radiation, air temperature, and relative humidity at two heights; wind speed and direction; subsurface soil heat flux; subsurface soil temperature; volumetric soil water; and matric water potential. These data were used to estimate 20-minute average and daily average evapotranspiration values. The data presented in this report are collected and calculated evapotranspiration rates.

  4. Volcanic and magmatic evolution of a small trachytic vent complex, north Burro Mesa, Big Bend National Park, Texas

    USGS Publications Warehouse

    Morgan, Lisa A.; Shanks, Pat

    2009-01-01

    Volcanic rocks exposed on the northern end of Burro Mesa in Big Bend National Park portray the evolution of an Oligocene central volcanic vent complex that produced two generations of welded block and ash deposits associated with 1) initial dome collapse and 2) subsequent central spine collapse. Peripheral to the vent complex, isolated breccia deposit exposures overlie ignimbrites, tephras, and lavas. These blocks are a few meters to several hundred meters long and 30 m high and consist of monolithic angular and welded trachytic lava clasts in finer-grained matrix. Rheomorphic structures in the breccia deposit show ductile deformation and suggest it formed while above the glass transition temperature.

  5. Comparisons of the low-cost in-situ MESA plasma sensor with C/NOFS and GAIM plasma density/temperature data

    NASA Astrophysics Data System (ADS)

    McHarg, M. G.; Balthazor, R. L.; Scherliess, L.; Schunk, R. W.; DeLaBeaujardiere, O.; Roddy, P.; Hoeffner, Z.; Mueller, B.; Wilhelm, L.; Enloe, L.

    2013-12-01

    The United States Air Force Academy's Miniaturized Electrostatic Analyzer (MESA) was flown on the International Space Station between 2009 and 2011, measuring ion spectra when the ISS was ram-facing. From these spectra we have derived plasma density and temperature, and these are compared with in-situ measurements taken by the C/NOFS satellite and derived densities made using the Utah State University Global Assimilation of Ionospheric Measurements (GAIM) model ingesting GPS-TEC data. While communication problems prevented the MESA instrument working to its full capacity, several ionospheric features are identified and analysed. The performance of the MESA instrument is appraised and quantified, and suggestions made for improvements to the next generation of this instrument scheduled to fly on several missions over the next few years.

  6. East Africa continental margins

    SciTech Connect

    Bosellini, A.

    1986-01-01

    New well data from Somalia, together with the history of sea-floor spreading in the Indian Ocean derived from magnetic anomalies, show that the East African margins from latitude 15/sup 0/S into the Gulf of Aden comprise four distinct segments that formed successively by the southward drift of Madagascar from Somalia during the Middle to Late Jurassic and Early Cretaceous, by the northeastward drift of India along the Owen Transform during the Late Cretaceous and Paleocene, and by the opening of the Gulf of Aden during the Neogene.

  7. Health assessment for Imperial Oil Co. , Inc. /Champion Chemicals, Marlboro Township, Monmouth County, New Jersey, Region 2. CERCLIS No. NJD980654099. Final report

    SciTech Connect

    Not Available

    1990-06-30

    The Imperial Oil Company/Champion Chemical (IOC) is an oil blending and recovery facility. Imperial Oil was engaged in the custom blending of lubricants, primarily for the military. The IOC site and its immediate surroundings have demonstrable contamination of soils, surface water, sediments, and groundwater. Among the contaminants are PCBs, arsenic, lead, trichloroethylene, phthalates, and total petroleum hydrocarbons. Public health concerns center around the impact of contamination on area water supply, surface water discharge into recreational areas, and exposure of local residents and workers to contaminated soils.

  8. HIV and coronary artery calcium score: comparison of the Hawaii Aging with HIV Cardiovascular Study and Multi-Ethnic Study of Atherosclerosis (MESA) cohorts

    PubMed Central

    Chow, Dominic; Young, Rebekah; Valcour, Nicole; Kronmal, Richard A.; Lum, Corey J.; Parikh, Nisha I.; Tracy, Russell P.; Budoff, Matthew; Shikuma, Cecilia M.

    2015-01-01

    Objectives To determine the association of HIV, immunologic, and inflammatory factors on coronary artery calcium (CAC), a marker of subclinical atherosclerosis. Methods Cross-sectional study comparing baseline data of males from Hawaii Aging with HIV –Cardiovascular Study (HAHCS) with the Multi-Ethnic Study of Atherosclerosis (MESA) cohort. The cohorts were pooled to determine effects of HIV on CAC and explore immunologic and inflammatory factors that may explain development of CAC in HIV. Multivariable regression models compared CAC prevalence in HAHCS with MESA adjusting for coronary heart disease (CHD) risk profiles. Results We studied 100 men from HAHCS and 2733 men from MESA. Positive CAC was seen in 58% HAHCS participants and 57% MESA participants. Mean CAC was 260.8 in HAHCS and 306.5 in MESA. Using relative risk (RR) regression, HAHCS participants had a greater risk (RR=1.20, P<0.05) of having positive CAC than MESA when adjusting for age, smoking status, diabetes, antihypertensive therapy, BMI, systolic blood pressure, total cholesterol, and HDL cholesterol. Among participants with positive CAC, HIV infection was not associated with larger amounts of CAC. Among HAHCS participants, current HIV viral load, CD4, length of HIV, interleukin 6 (IL-6), fibrinogen, C-reactive protein (CRP), and D-dimer were not associated with the presence or amount of CAC. Discussion HIV was independently associated with a positive CAC in men with increased likelihood occurring between 45 and 50 years of age. Current HIV viral load, CD4 count, length of HIV, and inflammatory markers were unrelated to either presence or amount of CAC. PMID:26038953

  9. East African Rift Valley, Kenya

    NASA Technical Reports Server (NTRS)

    1990-01-01

    This rare, cloud free view of the East African Rift Valley, Kenya (1.5N, 35.5E) shows a clear view of the Turkwell River Valley, an offshoot of the African REift System. The East African Rift is part of a vast plate fracture which extends from southern Turkey, through the Red Sea, East Africa and into Mozambique. Dark green patches of forests are seen along the rift margin and tea plantations occupy the cooler higher ground.

  10. Middle East respiratory syndrome.

    PubMed

    Zumla, Alimuddin; Hui, David S; Perlman, Stanley

    2015-09-01

    Middle East respiratory syndrome (MERS) is a highly lethal respiratory disease caused by a novel single-stranded, positive-sense RNA betacoronavirus (MERS-CoV). Dromedary camels, hosts for MERS-CoV, are implicated in direct or indirect transmission to human beings, although the exact mode of transmission is unknown. The virus was first isolated from a patient who died from a severe respiratory illness in June, 2012, in Jeddah, Saudi Arabia. As of May 31, 2015, 1180 laboratory-confirmed cases (483 deaths; 40% mortality) have been reported to WHO. Both community-acquired and hospital-acquired cases have been reported with little human-to-human transmission reported in the community. Although most cases of MERS have occurred in Saudi Arabia and the United Arab Emirates, cases have been reported in Europe, the USA, and Asia in people who travelled from the Middle East or their contacts. Clinical features of MERS range from asymptomatic or mild disease to acute respiratory distress syndrome and multiorgan failure resulting in death, especially in individuals with underlying comorbidities. No specific drug treatment exists for MERS and infection prevention and control measures are crucial to prevent spread in health-care facilities. MERS-CoV continues to be an endemic, low-level public health threat. However, the virus could mutate to have increased interhuman transmissibility, increasing its pandemic potential.

  11. Canada's east coast play

    SciTech Connect

    Doig, I.M.

    1984-02-01

    The intent of this paper is to give a basic overview presentation on Canada's east coast play - most likely the number one offshore play in the free world - and possibly the world. The play stretches 2,500 miles north and south, as it follows the Labrador Coast, past the Strait of Belle Isle and onto the Grand Banks of Newfoundland and as it makes a 90 degree turn, 1,000 miles east to west along the coast of Nova Scotia to the Georges Bank. 3,500 miles in all - which if placed in western Canada, would stretch from northern Alberta to southern Mexico. It's geologic potential is immense - 15-20 billion barrels of oil and 80-90 Tcf of natural gas. And so far only approximately 2 billion barrels of oil and 5 Tcf of natural gas have been found. There is more out there. And less than 200 wells have been drilled - still very virgin territory. Two world size discoveries have been made in the area. Hibernia, on the Grand Banks, is estimated to contain 1.8 billion barrels. Venture, on the Scotian Shelf, has a natural gas reserve of 2.5 Tcf - big by Canadian standards and significant in that Mobil Oil has also made some other interesting discoveries on the same Sable Island block which have not been delineated.

  12. East African Rift

    NASA Technical Reports Server (NTRS)

    2008-01-01

    Places where the earth's crust has formed deep fissures and the plates have begun to move apart develop rift structures in which elongate blocks have subsided relative to the blocks on either side. The East African Rift is a world-famous example of such rifting. It is characterized by 1) topographic deep valleys in the rift zone, 2) sheer escarpments along the faulted walls of the rift zone, 3) a chain of lakes within the rift, most of the lakes highly saline due to evaporation in the hot temperatures characteristic of climates near the equator, 4) voluminous amounts of volcanic rocks that have flowed from faults along the sides of the rift, and 5) volcanic cones where magma flow was most intense. This example in Kenya displays most of these features near Lake Begoria.

    The image was acquired December 18, 2002, covers an area of 40.5 x 32 km, and is located at 0.1 degrees north latitude, 36.1 degrees east longitude.

    The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

  13. Middle East respiratory syndrome.

    PubMed

    Zumla, Alimuddin; Hui, David S; Perlman, Stanley

    2015-09-01

    Middle East respiratory syndrome (MERS) is a highly lethal respiratory disease caused by a novel single-stranded, positive-sense RNA betacoronavirus (MERS-CoV). Dromedary camels, hosts for MERS-CoV, are implicated in direct or indirect transmission to human beings, although the exact mode of transmission is unknown. The virus was first isolated from a patient who died from a severe respiratory illness in June, 2012, in Jeddah, Saudi Arabia. As of May 31, 2015, 1180 laboratory-confirmed cases (483 deaths; 40% mortality) have been reported to WHO. Both community-acquired and hospital-acquired cases have been reported with little human-to-human transmission reported in the community. Although most cases of MERS have occurred in Saudi Arabia and the United Arab Emirates, cases have been reported in Europe, the USA, and Asia in people who travelled from the Middle East or their contacts. Clinical features of MERS range from asymptomatic or mild disease to acute respiratory distress syndrome and multiorgan failure resulting in death, especially in individuals with underlying comorbidities. No specific drug treatment exists for MERS and infection prevention and control measures are crucial to prevent spread in health-care facilities. MERS-CoV continues to be an endemic, low-level public health threat. However, the virus could mutate to have increased interhuman transmissibility, increasing its pandemic potential. PMID:26049252

  14. [Civil engineering education at the Imperial College of Engineering in Tokyo: an analysis based on Ayahiko Ishibashi's memoirs].

    PubMed

    Wada, Masanori

    2014-01-01

    The Imperial College of Engineering (ICE or Kobu-Daigakko) in Tokyo, founded in 1873 under the auspices of the Ministry of Public Works, was one of the most prominent modern institutions of engineering education in early Meiji Japan. Previous studies have revealed that the ICE offered large scale practical training programs at enterprises of the Ministry, which sometimes lasted several months, and praised their ideal combination of theory and practice. In reality, it has been difficult to evaluate the quality of education at the ICE mainly because of scarcity of sources. ICE students published a collection of memoirs for alumni members, commemorating the fiftieth-year of the history of the Tokyo Imperial University. Drawing on the previously neglected collection of students' memoires, this paper appraises the education of civil engineering offered by the ICE. The paper also compares this collection with other official records of the college, and confirms it as a reliable source, even though it contains some minor errors. The author particularly uses the memoirs by Ayahiko Ishibashi, one of the first graduates from its civil engineering course, who left sufficient reminiscences on education that he received. This paper, as a result, illustrates that the main practical training for the students of civil engineering was limited to designing process, including surveying. Furthermore, practical training that Ishibashi received at those enterprises often lacked a plan, and its effectiveness was questionable.

  15. Assessment of the impact on crops of effluent gases from geothermal energy development in the Imperial Valley, California

    SciTech Connect

    Kercher, J.R.

    1981-05-22

    We have assessed the potential impact of regionally dispersed sources of geothermal gaseous effluents on crops in the Imperial Valley. We used a detailed model of the photosynthesis and growth of sugar beets fumigated by H/sub 2/S and CO/sub 2/ and generalized from the model calculations to other crops. Model calculations were made with estimates of time series of expected ground-level concentrations of H/sub 2/S and CO/sub 2/ calculated by the Air Quality Assessment element of the Imperial Valley Environmental Project (IVEP) at 22 locations around the valley. Results indicate that in the absence of interactions with other ambient pollutant gases, all locations would experience an increase (from slight to significant) in total growth of sugar beets. Seven locations will experience an increase of at least 10%. We calculated the emissions rate at which negative effects cancel out the benefits of H/sub 2/S fertilization; in the worst case, emission rates are expected to be no more than 1/13 this crossover rate. The expected emission rate will be less than that necessary for negative effects on the most sensitive species (such as alfalfa) by a factor of 4. Similar results for other crops are summarized in the report. If CO/sub 2/ emissions are increased proportionately, the dominance of deleterious effects is not expected to occur even under maximum development as set forth in IVEP scenario projections. 23 references, 8 figures, 6 tables.

  16. [Asylum for curing or securing? The confinement of forensic patients as a challenge of asylum psychiatry in Imperial Germany].

    PubMed

    Müller, Christian

    2006-01-01

    Asylum for curing or securing? The confinement of forensic patients as a challenge of asylum psychiatry in Imperial Germany. In Imperial Germany psychiatrists sought to give their asylums the character of modern medical hospitals. Due to the increase of insanity defence these efforts were obstructed by the high number of inmates with a criminal background. Special departments for mentally ill criminals were founded both in asylums and in prisons. But the clientele was not welcome in any of these institutions. Thus, there was a high fluctuation between prisons and asylums. A new definition of criminal responsibility was needed. In order to keep criminals out of their hospitals psychiatrists developed the medical concept of psychopathy referring to a mental defect without lack of responsibility. On the other hand penal law reformers plead to introduce preventive measures, such as security confinement, into the criminal law book. Since the resolution of the 'law against habitual criminals' in November 1933 judges are allowed to sentence mentally ill offenders to indefinite confinement in psychiatric institutions.

  17. [Asylum for curing or securing? The confinement of forensic patients as a challenge of asylum psychiatry in Imperial Germany].

    PubMed

    Müller, Christian

    2006-01-01

    Asylum for curing or securing? The confinement of forensic patients as a challenge of asylum psychiatry in Imperial Germany. In Imperial Germany psychiatrists sought to give their asylums the character of modern medical hospitals. Due to the increase of insanity defence these efforts were obstructed by the high number of inmates with a criminal background. Special departments for mentally ill criminals were founded both in asylums and in prisons. But the clientele was not welcome in any of these institutions. Thus, there was a high fluctuation between prisons and asylums. A new definition of criminal responsibility was needed. In order to keep criminals out of their hospitals psychiatrists developed the medical concept of psychopathy referring to a mental defect without lack of responsibility. On the other hand penal law reformers plead to introduce preventive measures, such as security confinement, into the criminal law book. Since the resolution of the 'law against habitual criminals' in November 1933 judges are allowed to sentence mentally ill offenders to indefinite confinement in psychiatric institutions. PMID:17144371

  18. [The anatomical revolution and the transition of anatomical conception in late imperial china].

    PubMed

    Sihn, Kyu Hwan

    2012-04-30

    This paper aimed to examine the anatomical revolution from Yilingaicuo (Correcting the Errors of Medicine) and Quantixinlun(Outline of Anatomy and Physiology) in late imperial China. As the cephalocentrism which the brain superintend human operation of the mind was diffused in China since 16th century, the cephalocentrism and the cardiocentrism had competed for the hegemony of anatomical conception. Because of the advent of Yilingaicuo and Quantixinlun, the cephalocentrism became the main stream in the anatomical conception. The supporters of the Wang Yangming's Xinxue(the Learning of Heart and Mind) argued that the heart was the central organ of perception, sensitivity, and morality of the human body in medicine since 16th century. Even reformist and revolutionary intellectuals like Tan sitong and Mao zedong who had supported the Wang Yangming's Xinxue embraced the cephalocentrism in the late 19th century and the early 20th century. May Fourth intellectuals had not obsessed metaphysical interpretation of human body any more in the New Culture Movement in 1910s. They regarded human body as the object of research and writing. The anatomy was transformed into the instrumental knowledge for mutilation of the body. Yilingaicuo challenged the traditional conception of body, and Chinese intellectuals drew interest in the anatomy knowledge based on real mutilation. Quantixinlun based on Western medicine fueled a controversy about anatomy. Though new knowledge of anatomy was criticized by traditional Chinese medical doctors from the usefulness and morality of anatomy, nobody disavowed new knowledge of anatomy from the institutionalization of Western medicine in medical school. The internal development of cephalocentrism and positivism had influence on anatomy in China since 16th century. The advent of Yilingaicuo and Quantixinlun provided the milestone of new anatomy, though both sides represented traditional Chinese medicine and Western medicine respectively. They

  19. 5. VIEW TO THE EAST NORTH EAST FROM PEAK OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW TO THE EAST NORTH EAST FROM PEAK OF THE TURBINE HALL. THE BRICK STACK TO THE RIGHT EXHAUSTED BOILER 904 WHICH WAS INSTALLED IN 1944. STEEL SHEATHED STRUCTURE IN CENTER OF PHOTOGRAPH HOUSED BOILERS 902 AND 903. - New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Shore Drive, Greenwich, Fairfield County, CT

  20. VIEW OF UPSTREAM (EAST) SIDES OF UPPER (EAST) END OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF UPSTREAM (EAST) SIDES OF UPPER (EAST) END OF LOCK, SOUTHEAST AND NORTHEAST CONTROL HOUSES, LOCK UNDER REPAIR, BUILDING NOS. 51, 52 AND SOUTHWEST CONTROL HOUSE IN BACKGROUND, VIEW TOWARDS WEST-NORTHWEST - Ortona Lock, Lock No. 2, Machinery and Control Houses, Caloosahatchee River, Cross-State Canal, Okeechobee Intracoastal Waterway, Ortona, Glades County, FL