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1

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

Microsoft Academic Search

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

R. W. Murphy; N. Domingo

1982-01-01

2

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

SciTech Connect

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.

Murphy, R.W.; Domingo, N.

1982-05-01

3

Project development plan for East Mesa Geothermal Test Center  

SciTech Connect

Plans for a test facility for geothermal energy systems and components designed for moderate temperature/low salinity geothermal fluids available at the East Mesa site in the Imperial Valley of California are discussed. Details of the following phases of development are given: technical plan; management plan; procurement and contracting plan; technology transfer and utilization plan; and resource requirements. (JGB)

Not Available

1975-03-01

4

79. North Mesa St., 215 (RobertsBanner Building), north and east ...  

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

79. North Mesa St., 215 (Roberts-Banner Building), north and east facades, southwest corner of Mills Ave and North Mesa Street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

5

Failure analysis report: 10 MW geothermal binary turbine, Magma Electric Company, East Mesa, California  

Microsoft Academic Search

The cause of failure of two isobutane turbines at the East Mesa geothermal plant was investigated. One turbine lost all the vanes in all three stages, while the other turbine sustained dings and nicks in the vanes, but remained intact. The exact cause of failure could not be determined. Three possibilities were determined: (1) a single foreign object, possibly a

Anliker

1981-01-01

6

Planning and Design of Additional East Mesa Geothermal Test Facilities (Phase 1B). Volume III. Appendices.  

National Technical Information Service (NTIS)

In the first of two sections of this report, Appendix A, results of a petrophysical study performed on seven wells in the East Mesa area of the Imperial Valley of California are reported. The wells were drilled on and around the geothermal anomaly that co...

R. O. Pearson

1976-01-01

7

Paleostress investigation near Rainier Mesa, Nevada Test Site  

SciTech Connect

Knowledge of the fault-kinematic and paleostress histories in the Rainier Mesa/Yucca Flat region can be beneficial to containment scientists in understanding the effects of natural faults on containment of nuclear detonations. Fault-slip data were collected from 444 small-displacement (0.1--10 m) faults cutting 16-11 Ma tuffs and tuffaceous sedimentary rocks in nine areas mainly along the south, east, and northeast flanks of Rainier Mesa to investigate the faulting and paleostress history in the region. Two of the faults appear to have been test-reactivated as tension cracks and may have also experienced renewed shear displacement. One to three different stress solutions were computed from data collected in seven of the measurement areas. From cross-cutting relations of faults and faulted stratigraphic units, the relative age of many of the computed stress regimes and associated faults were determined. Using stratigraphic constraints and similarities in stress results, a relative stress- regime and faulting sequence was constructed for the study region. Fracturing observed after nuclear explosions is influenced by the structural arrangement of pre-existing faults and joints and by the current regional stress field.

Minor, S.A.

1989-01-01

8

Paleostress investigation near Rainier Mesa, Nevada Test Site  

SciTech Connect

Knowledge of the fault-kinematic and paleostress histories in the Rainier Mesa/Yucca Flat region can be beneficial to containment scientists in understanding the effects of natural faults on containment of nuclear detonations. Fault-slip data were collected from 444 small-displacement (0.1--10 m) faults cutting 16-11 Ma tuffs and tuffaceous sedimentary rocks in nine areas mainly along the south, east, and northeast flanks of Rainier Mesa to investigate the faulting and paleostress history in the region. Two of the faults appear to have been test-reactivated as tension cracks and may have also experienced renewed shear displacement. One to three different stress solutions were computed from data collected in seven of the measurement areas. From cross-cutting relations of faults and faulted stratigraphic units, the relative age of many of the computed stress regimes and associated faults were determined. Using stratigraphic constraints and similarities in stress results, a relative stress- regime and faulting sequence was constructed for the study region. Fracturing observed after nuclear explosions is influenced by the structural arrangement of pre-existing faults and joints and by the current regional stress field.

Minor, S.A.

1989-12-31

9

Failure analysis report: Heat exchanger tubes geothermal binary power plant, Magma Electric Company, East Mesa, California  

Microsoft Academic Search

Radian received twelve sections of heat exchanger tubing from the Magma Electric Company's 10MW(e) East Mesa binary geothermal power plant. Three tube sections were received from each of four shell and tube heat exchangers (HX1, Hx6, HX8, and Hx10) of the isobutane vaporizer train. All samples were taken from the upper few rows of tubes. Two months later, four more

Dennis M. Anliker; Peter F. II Ellis

1982-01-01

10

A PLAUSIBLE TWO-DIMENSIONAL VERTICAL MODEL OF THE EAST MESA GEOTHERMAL FIELD, CALIFORNIA, U.S.A  

SciTech Connect

A two-dimensional conceptual model of the East Mesa geothermal system is developed on the basis of the existing geological, geophysical geochemical, heat flux, and borehole logging data. A fault called the Mesa Fault is assumed to charge the reservoir, which is overlaid by a clay-rich cap. The mathematical model :is based on the flow of liquid water in a saturated porous medium. To obtain temperature-depth distributions similar to those measured at the site, we assume that the liquid is convecting at a high Rayleigh number. In this approximation, liquid rises up the fault and spreads into the near regions of the reservoir isothermally. The cooling effect of the surface on the flow in the reservoir is confined to a thin layer adjacent to the cap-reservoir interface near the fault. This layer grows with the distance from the fault. Eventually, the full depth of the reservoir is cooled by the surface. Results are obtained for the velocities, pressures, and temperatures of the entire system (fault zone, aquifer and clay cap). Finally we compare the heat flux predicted for the surface to that measured at the site in shallow wells.

Goyal, K.P.; Kassoy, D.R.

1980-03-01

11

Failure analysis report: 10 MW geothermal binary turbine, Magma Electric Company, East Mesa, California  

SciTech Connect

The cause of failure of two isobutane turbines at the East Mesa geothermal plant was investigated. One turbine lost all the vanes in all three stages, while the other turbine sustained dings and nicks in the vanes, but remained intact. The exact cause of failure could not be determined. Three possibilities were determined: (1) a single foreign object, possibly a bolt; (2) foreign substance (geothermal fluid, oil, liquid isobutane, or particulate corrosion products) entered both turbines; or (3) one or more brazed joints failed by fatigue or by a corrosive process. 5 refs., 13 figs. (ACR)

Anliker, D.M.

1981-01-01

12

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

SciTech Connect

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 volcanic units in the west has been refined as are large and small fault structures such as the CP Thrust Fault, the Carpetbag Fault, and the Yucca Fault that cross Yucca Flat. The subsurface electrical resistivity distribution and inferred geologic structures determined by this investigation should help constrain the hydrostratigraphic framework model that is under development for the Rainier Mesa/Shoshone Mountain Corrective Action Unit and areas to the west and in understanding the effects on ground-water flow in the area.

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

2006-12-12

13

Preliminary evaluation of materials for fluidized bed technology in geothermal wells at Raft River, Idaho, and East Mesa, California  

Microsoft Academic Search

Corrosion tests of candidate materials for heat exchangers using liquid fluidized bed technology were conducted at the U.S. Department of Energy's geothermal wells at Raft River, Idaho, and at the Geothermal Components Test Facility (GCTF) in East Mesa, Calif. These investigations deal with moderate temperature ranges of 135 to 163 \\/degree\\/C for electrical generation and nonelectrical applications. The corrosion, erosion,

W. J. Dirk; C. A. Allen; R. E. McAtee

1980-01-01

14

Hydraulic-fracture stimulation treatments at East Mesa, Well 58-30. Geothermal-reservoir well-stimulation program  

SciTech Connect

East Mesa Well 58-30 was selected for two stimulation treatments: a conventional hydraulic fracture in a deep, low permeability interval, and a dendritic fracture in a shallow, high permeability interval of completion. The well selection, pre-stimulation evaluation, fracture treatment design, and post-stimulation evaluation are presented.

Not Available

1981-02-01

15

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

SciTech Connect

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.

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

1981-01-01

16

Failure analysis report: Heat exchanger tubes geothermal binary power plant, Magma Electric Company, East Mesa, California  

SciTech Connect

Radian received twelve sections of heat exchanger tubing from the Magma Electric Company's 10MW(e) East Mesa binary geothermal power plant. Three tube sections were received from each of four shell and tube heat exchangers (HX1, Hx6, HX8, and Hx10) of the isobutane vaporizer train. All samples were taken from the upper few rows of tubes. Two months later, four more tube sections were received. These four sections were taken from the lower rows of heat exchangers 1, 6 (two sections), and 10. Radian was requested to investigate the cause of severe pitting failure of these heat exchanger tubes. This report is part of a continuing DOE effort to gain insight into the service life of component materials employed in geothermal energy utilization.

Anliker, Dennis M.; Ellis, Peter F. II

1982-05-01

17

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

USGS Publications Warehouse

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.

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

1997-01-01

18

East Mesa Magmamax Power Process Geothermal Generating Plant, A Preliminary Analysis  

SciTech Connect

During recent months, Magma Power Company has been involved in the shakedown and startup of their 10 MW binary cycle power plant at East Mesa in the Imperial Valley of Southern California. This pilot plant has been designed specifically as an R & D facility, with its primary goal to explore the necessary technology improvements required to make the binary cycle an efficient, cost effective and reliable conversion process. Magma Power's exploration activities, carried out in other parts of the Western United States after the initial discovery and development at The Geyser's, gave evidence that The Geyser's type of steam reservoir was unique and that the majority of geothermal resources would be of the hydrothermal, or pressurized hot water type. Initial flow tests throughout different locations where this type of resource was discovered indicated that well bore scaling occurred at the flash point in the wells. Initial evaluations indicated that if the well fluid could be maintained under pressure as it traversed the well bore, the potential for scaling would be mitigated. Tests carried out in the late 60's at Magma's Brady Hot Springs development in Nevada indicated that scaling was mitigated with the installation of a pump in the geothermal well. Subsequently, designs were developed of a binary process, utilizing heat exchangers for power generation. Magma was able to acquire process patents associated with this and had a patent issued (Magmamax Power Process). This incorporates the concept of pumping a geothermal well and transferring the heat in the geothermal fluid to a secondary power fluid in heat exchangers. Magma's desire to demonstrate this technology was one of the prime motivations associated with the installation of the East Mesa plant.

Hinrichs, T.C.; Dambly, B.W.

1980-12-01

19

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

SciTech Connect

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.

Lyles, B.F.; Mihevc, T.M.

1990-03-01

20

NTS (Nevada Test Site) Mesa recharge study FY 1988: Letter report  

SciTech Connect

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 6000 ft to over 7000 ft. Accompanying these elevation changes is a variety of plant communities. Vegetation in areas of low elevation is dominated by sagebrush and by pinyon/juniper at the higher elevations. 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.

Lyles, B.F.; Mihevc, T.M.

1990-03-01

21

Test results from the 500 kW direct contact pilot plant at East Mesa  

SciTech Connect

A 500 kW power plant utilizing direct contact heat exchange (DCHX) between the geothermal brine and the isobutane (IC/sub 4/) working fluid is being operated at the East Mesa test facility. The power plant incorporates a 40-inch-diameter direct-contactor approximately 35 feet tall. The purpose of the pilot plant is to determine the feasibility of large-scale direct-contact heat exchange and power plant operation with the DCHX. The binary cycle offers higher conversion factors (heat energy transformed to electrical energy) than the flashed steam approach for geothermal brines in the 300 to 400/sup 0/F range and preliminary results indicate the DCHX system may have higher performance than the conventional tube-and-shell binary approach. This performance advantage results from the absence of any fouling and the very close pinch temperatures achieved in the DCHX itself. The baseline performance tests for the plant were completed in January 1980. The results of these tests and follow-on testing are covered.

Nichols, K.E.; Olander, R.G.; Lobach, J.L.

1980-09-01

22

Tunnel detection using the radio imaging method at the Otay Mesa site  

NASA Astrophysics Data System (ADS)

We demonstrated that radio imaging method (RIM) surface-to- surface, borehole-to-surface, and borehole-to-borehole sensing technologies at the Otay Mesa test site east of San Diego, CA could detect and delineate a horizontal 4 X 6-foot (cross- section) tunnel buried at a depth of approximately 45 feet. Utilizing monochromatic, continuous wave electromagnetic signals from a magnetic dipole source operating in the range between 22 kHz and 15 MHz, we confirmed the effectiveness of two general approaches: (1) mapping the electrical conductivity contrast between the country rock (sandstone) and the tunnel (i.e. the void and surrounding desiccation fractures) and (2) locating a cable (i.e. conductor) within and running the length of the tunnel from its induced, secondary radiation. Surface-to-surface RIM, utilizing a gradiometer receiver, mapped the 2D plan view location of the tunnel. Borehole-to-surface delineated both the depth and plan view location of the tunnel. Borehole-to-borehole RIM delineated the depth of the tunnel.

Mahrer, Kenneth D.; Mondt, William A.

1994-07-01

23

Ground-water levels beneath eastern Pahute Mesa and vicinity, Nevada Test Site, Nye County, Nevada  

SciTech Connect

This report presents water-level and basic construction data for drill holes in and around the primary are of underground testing on eastern Pahute Mesa, and water-level contours based on the most recent water-level measurement made in each drill hole. Measurements are presented for 72 wells and span about 30 years. The map complements and earlier publication. Information is intended to benefit those involved in: the siting, drilling, and design of drill holes to house nuclear devices, the study of ground water hydrology and radionuclide transport beneath the Pahute Mesa, and investigations of regional ground water flow at and near the NTS.

O`Hagan, M.D.; Laczniak, R.J.

1996-08-01

24

COMBINED LEPA AND MESA IRRIGATION ON A SITE SPECIFIC LINEAR MOVE SYSTEM  

Technology Transfer Automated Retrieval System (TEKTRAN)

An off-the-shelf PLC-based control system has been developed and field tested to enable site-specific irrigation of multiple 50 ft X 80 ft research plots using either mid-elevation spray heads (MESA) and low energy precision application (LEPA) irrigation methods on linear move sprinkler systems. Bo...

25

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

26

Hydraulic Fracture Stimulation Treatments at East Mesa, Well 58-30; Geothermal Reservoir Well Stimulation Program; Experiment 3 and 4  

SciTech Connect

The tests reported were part of the DOE Geothermal Reservoir Well Stimulation Program. This East Mesa (Imperial Valley, CA) well was successfully stimulated with two fracture treatments, a dendritic fracture and a planar fracture. The natural flow production of the well increased 114 percent, to 197,900 lb/hr. These tests were among the few successful attempts of this program to increase flow from geothermal production wells. The general belief is that these tests worked OK primarily because the formation was sedimentary rock (similar to rock in most oil and gas wells that have been stimulated successfully. Similar tests in geothermal hard rock reservoirs did not work very well. (DJE 2005)

None

1982-02-01

27

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

SciTech Connect

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 Shoshone Mountain, to Buckboard Mesa in the south, and onto Rainier Mesa in the north. 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 for the twenty-six stations shown in figure 1. No interpretation of the data is included here.

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

2006-11-03

28

Geology, hydrothermal petrology, stable isotope geochemistry, and fluid inclusion geothermometry of LASL geothermal test well C/T-1 (Mesa 31-1), East Mesa, Imperial Valley, California, USA  

SciTech Connect

Borehole Mesa 31-1 (LASL C/T-1) is an 1899-m (6231-ft) deep well located in the northwestern part of the East Mesa Geothermal Field. Mesa 31-1 is the first Calibration/Test Well (C/T-1) in the Los Alamos Scientific Laboratory (LASL), Geothermal Log Interpretation Program. The purpose of this study is to provide a compilation of drillhole data, drill cuttings, well lithology, and formation petrology that will serve to support the use of well LASL C/T-1 as a calibration/test well for geothermal logging. In addition, reviews of fluid chemistry, stable isotope studies, isotopic and fluid inclusion geothermometry, and the temperature log data are presented. This study provides the basic data on the geology and hydrothermal alteration of the rocks in LASL C/T-1 as background for the interpretation of wireline logs.

Miller, K.R.; Elders, W.A.

1980-08-01

29

Micrometeorological and Soil Data for Calculating Evapotranspiration for Rainier Mesa, Nevada Test Site, Nevada, 2002-05.  

National Technical Information Service (NTIS)

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 ...

G. A. DeMeo A. L. Flint R. J. Laczniak W. E. Nylund

2006-01-01

30

Micrometeorological and Soil Data for Calculating Evapotranspiration for Rainier Mesa, Nevada Test Site, Nevada 2002-05  

Microsoft Academic Search

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

Guy A. DeMeo; Alan L. Flint; Randell J. Laczniak; Walter E. Nylund

2006-01-01

31

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

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.

Grasso, Dennis N.

2003-01-01

32

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

SciTech Connect

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.

Ebel, Brian A.; Nimmo, John R.

2009-12-29

33

Predictions of Long-Term Radionuclide Transport at Rainier Mesa, Nevada National Security Site  

NASA Astrophysics Data System (ADS)

Rainier Mesa, a tuffaceous plateau on the Nevada National Security Site, has been the location of numerous subsurface nuclear tests conducted in a series of tunnel complexes located approximately 400 m below the top of the mesa and 400 m above the regional groundwater flow system. The tunnels were constructed near the middle of an 800 m Tertiary sequence of faulted, low-permeability welded and non-welded bedded, vitric, and zeolitized tuff units. Water levels from wells in the vicinity of both the N- and T-tunnel complexes indicate the presence of two saturated zones. The first saturated zone has an elevation of approximately 1800 m (300 mbgs) and is located 100 m above the T-tunnel complex. Water level measurements during well construction and borehole moisture profiles of matrix saturation suggest this upper zone of saturation extends downward through most of the Tertiary sequence, though data is not available for the lowest Tertiary units. The second saturated zone is located at an elevation of 1300 m (800 mbgs) within a thrust sheet of Paleozoic carbonates and may be hydraulically connected to the Death Valley regional flow system. This study evaluates the potential for downward radionuclide transport associated with six underground tests at the T-tunnel complex over a 1000 year period. A dual-permeability (DKM) model containing spatially discontinuous fault networks within low-permeability tuff units is utilized to simulate complex patterns of variably-saturated flow. A modified random walk particle tracking code for DKM velocity fields is then used to compute radionuclide breakthrough at the regional water table (second saturated zone). Results include calibration of a variably-saturated model to field observations including water discharge history at the tunnel portal, variably-saturated fault fields, water levels in perched intervals and differential saturations in the volcanics and carbonates; and predictions of radionuclide breakthrough at the regional water table given uncertainty in fault network geometry, fault hydraulic properties, recharge and radionuclide adsorption and diffusion.

Reeves, D. M.; Parashar, R.; Pohlmann, K. F.; LaBolle, E. M.; Zhang, Y.; Russell, C. E.; Chapman, J. B.

2011-12-01

34

GIS surface effects archive of underground nuclear detonations conducted at Yucca Flat and Pahute Mesa, Nevada Test Site, Nevada  

SciTech Connect

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.

Grasso, D.N.

2001-11-02

35

Remedial actions at the former Climax Uranium Company, Uranium Mill site, Grand Junction, Mesa County, Colorado. Volume 1, Text: Final environmental impact statement.  

National Technical Information Service (NTIS)

This statement evaluates and compares the environmental impacts associated with the remedial actions of the residual radioactive materials remaining at the inactive uranium processing site and associated vicinity properties at Grand Junction, Mesa County,...

1986-01-01

36

Final Environmental Impact Statement: Remedial Actions at the Former Climax Uranium Company Uranium Mill Site, Grand Junction, Mesa County, Colorado: Volume 1, Text.  

National Technical Information Service (NTIS)

This statement evaluates and compares the environmental impacts associated with the remedial actions of the residual radioactive materials remaining at the inactive uranium processing site and associated vicinity properties at Grand Junction, Mesa County,...

1986-01-01

37

TRACER STABILITY AND CHEMICAL CHANGES IN AN INJECTED GEOTHERMAL FLUID DURING INJECTION-BACKFLOW TESTING AT THE EAST MESA GEOTHERMAL FIELD  

SciTech Connect

The stabilities of several tracers were tested under geothermal conditions while injection-backflow tests were conducted at East Mesa. The tracers I and Br were injected continuously while SCN (thiocyanate), B, and disodium fluorescein were each injected as a point source (slug). The tracers were shown to be stable, except where the high concentrations used during slug injection induced adsorption of the slug tracers. However, adsorption of the slug tracers appeared to ''armor'' the formation against adsorption during subsequent tests. Precipitation behavior of calcite and silica as well as Na/K shifts during injection are also discussed.

Adams, M.C.

1985-01-22

38

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

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.

Carroll, R. D.; Kibler, J. E.

1983-01-01

39

Micrometeorological and Soil Data for Calculating Evapotranspiration for Rainier Mesa, Nevada Test Site, Nevada 2002-05.  

SciTech Connect

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.

Guy A. DeMeo; Alan L. Flint; Randell J. Laczniak; Walter E. Nylund

2006-12-28

40

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

41

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

42

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

43

site plan, floor plan, southeast and east elevations, detail showing ...  

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

site plan, floor plan, southeast and east elevations, detail showing original front entrance, interior detail showing fireplace in elevation - Neiman House, 1930 Providence Road, Charlotte, Mecklenburg County, NC

44

Groundwater Flow Model of Corrective Action Units 101and 102: Central and Western Pahute Mesa, Nevada Test Site, Nye County, Nevada, Revision 0  

SciTech Connect

A steady-state groundwater flow model of the Pahute Mesa Corrective Action Unit (CAU) has been constructed using a suite of hydrostratigraphic frameworks, recharge distributions, and hydraulic parameter assignment conceptualizations. Model calibration and sensitivity analyses, and geochemical verification were conducted and documented. The U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office initiated the Underground Test Area Project to assess and evaluate the effects of the underground nuclear weapons tests on groundwater on the Nevada Test Site and vicinity through the Federal Facility Agreement and Consent Order (FFACO). The processes that will be used to complete Underground Test Area corrective actions are described in the "Corrective Action Strategy" in the FFACO Appendix VI, Rev. 1 (December 7, 2000). The objective of the strategy is to analyze and evaluate each Underground Test Area CAU through a combination of data and information collection and evaluation, and modeling groundwater flow and contaminant transport, including uncertainty. The FFACO corrective action process for the Central and Western Pahute Mesa CAUs was initiated with the Corrective Action Investigation Plan. This Corrective Action Investigation Plan identified a three-step model development process to evaluate the impact of testing on groundwater and simulate a contaminant boundary. The first step is the compilation and evaluation of existing and new data for use in the flow model and is documented in a series of data compilation and analysis reports, including Hydrologic Data for Groundwater Flow and Contaminant Transport Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nye County, Nevada. The second step is the development of the groundwater flow model, documented in this report. The third step is the development of the transport model to assess the migration of radionuclides away from underground nuclear test cavities on Pahute Mesa. Underground nuclear tests conducted at Pahute Mesa that are of interest to the Underground Test Area Project are those detonated in deep vertical shafts, or drilled into volcanic rock near or below the water table. A total of 82 such underground nuclear tests were conducted in Pahute Mesa. Sixty-four of these tests were detonated on Central Pahute Mesa (CAU 101), and 18 tests were detonated in Western Pahute Mesa (CAU 102). Transport in groundwater is the primary mechanism of migration for the subsurface contamination away from Pahute Mesa underground nuclear tests.

Greg Ruskauff

2006-06-01

45

Predevelopment Water-Level Contours for Aquifers in the Rainier Mesa and Shoshone Mountain area of the Nevada Test Site, Nye County, Nevada  

Microsoft Academic Search

Contaminants introduced into the subsurface of the Nevada Test Site at Rainier Mesa and Shoshone Mountain by underground nuclear testing are of concern to the U.S. Department of Energy and regulators responsible for protecting human health and safety. Although contaminants were introduced into low-permeability rocks above the regional flow system, the potential for contaminant movement away from the underground test

Joseph M. Fenelon; Randell J. Laczniak; Keith J. Halford

2008-01-01

46

Summary of micrographic analysis of fracture coating phases on drill cores from Pahute Mesa, Nevada Test Site. Revision 1  

SciTech Connect

The flow path between Pahute Mesa and the groundwater discharge area in Oasis Valley (approximately 18 miles to the southwest) is of concern due to the relatively short travel distance between a recharge area where underground nuclear testing has been conducted and the off-site water users. Groundwater flow and transport modeling by IT Corporation (IT) has shown rapid tritium transport in the volcanic rock aquifers along this flow path. The resultant estimates of rapid transport were based on water level data, limited hydraulic conductivity data, estimates of groundwater discharge rates in Oasis Valley, assumed porosities, and estimated retardation rates. Many of these parameters are poorly constrained and may vary considerably. Sampling and analytical techniques are being applied as an independent means to determine transport rates by providing an understanding of the geochemical processes that control solute movement along the flow path. As part of these geochemical investigations, this report summarizes the analysis of fracture coating mineral phases from drill core samples from the Pahute mesa area of the Nevada Test Site (NTS). Archived samples were collected based on the presence of natural fractures and on the types and abundance of secondary mineral phases present on those fracture surfaces. Mineral phases present along fracture surfaces are significant because, through the process of water-rock interaction, they can either contribute (as a result of dissolution) or remove (as a result of precipitation or adsorption) constituents from solution. Particular attention was paid to secondary calcite occurrences because they represent a potential source of exchangeable carbon and can interact with groundwater resulting in a modified isotopic signature and apparent water age.

NONE

1998-12-01

47

Mesa Verde Centennial Celebration  

Microsoft Academic Search

Mesa Verde is the historical familial home of the Ancestral Pueblo People. It is a heritage center and leading archeological park that offers visitors an educational experience in a well-kept preserve. The park offers many ancient archeological sites such as the elaborate stone cliff dwelling structures, artifacts, and ceremonial kivas dug deep into the earth. Due to devastating fires over

Simon G. Walls; Nicole Longo

2006-01-01

48

General View of Kinckley Knitting Mill site, east end of ...  

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

General View of Kinckley Knitting Mill site, east end of site along Wister Street, looking north, showing ruin of stone mill building and smoke stack of the Germantown Dyeworks in background - Hinckley Knitting Mills, 21-35 East Wister Street, Philadelphia, Philadelphia County, PA

49

Value of information analysis for Corrective Action Unit Nos. 101 and 102: Central and western Pahute Mesa, Nevada Test Site, Nevada  

SciTech Connect

The purpose of this report is to describe the basis for and present the results of a value of information analysis (VOIA) for the Pahute Mesa underground test area of the Nevada Test Site (NTS), one of several areas of the Nevada Test Site used for underground nuclear testing in the past. The value of information analysis was used to evaluate and compare potential characterization options at the Pahute Mesa underground test area for site remediation purposes. Thirty six characterization options were evaluated, ranging from a single, inexpensive study using existing data and intended to address a single question or uncertainty, to a forty-million-dollar suite of activities designed to collect and analyze new information to address multiple uncertainties. The characterization options were compared and ranked based on how effective the experts though the information collection would be in reducing uncertainties, how this effected the distance to contaminant boundary, and the cost of the option.

NONE

1998-09-01

50

East Lawn Site and Planting Plan with Section Oklahoma ...  

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

East Lawn Site and Planting Plan with Section - Oklahoma City Civic Center, Bounded by N. Shartel Avenue to the West, N. Hudson Avenue to the East, Couch Drive to the North, and Colcord Drive to the South, Oklahoma City, Oklahoma County, OK

51

Evaluation of the Hydrologic Source Term from Underground Nuclear Tests on Pahute Mesa at the Nevada Test Site: The CHESHIRE Test  

SciTech Connect

The objectives of this report are to develop, summarize, and interpret a series of detailed unclassified simulations that forecast the nature and extent of radionuclide release and near-field migration in groundwater away from the CHESHIRE underground nuclear test at Pahute Mesa at the NTS over 1000 yrs. Collectively, these results are called the CHESHIRE Hydrologic Source Term (HST). The CHESHIRE underground nuclear test was one of 76 underground nuclear tests that were fired below or within 100 m of the water table between 1965 and 1992 in Areas 19 and 20 of the NTS. These areas now comprise the Pahute Mesa Corrective Action Unit (CAU) for which a separate subregional scale flow and transport model is being developed by the UGTA Project to forecast the larger-scale migration of radionuclides from underground tests on Pahute Mesa. The current simulations are being developed, on one hand, to more fully understand the complex coupled processes involved in radionuclide migration, with a specific focus on the CHESHIRE test. While remaining unclassified, they are as site specific as possible and involve a level of modeling detail that is commensurate with the most fundamental processes, conservative assumptions, and representative data sets available. However, the simulation results are also being developed so that they may be simplified and interpreted for use as a source term boundary condition at the CHESHIRE location in the Pahute Mesa CAU model. In addition, the processes of simplification and interpretation will provide generalized insight as to how the source term behavior at other tests may be considered or otherwise represented in the Pahute Mesa CAU model.

Pawloski, G A; Tompson, A F B; Carle, S F; Bourcier, W L; Bruton, C J; Daniels, J I; Maxwell, R M; Shumaker, D E; Smith, D K; Zavarin, M

2001-05-01

52

The Underground Test Area Project of the Nevada Test Site: Building Confidence in Groundwater Flow and Transport Models at Pahute Mesa Through Focused Characterization Studies  

SciTech Connect

Pahute Mesa at the Nevada Test Site contains about 8.0E+07 curies of radioactivity caused by underground nuclear testing. The Underground Test Area Subproject has entered Phase II of data acquisition, analysis, and modeling to determine the risk to receptors from radioactivity in the groundwater, establish a groundwater monitoring network, and provide regulatory closure. Evaluation of radionuclide contamination at Pahute Mesa is particularly difficult due to the complex stratigraphy and structure caused by multiple calderas in the Southwestern Nevada Volcanic Field and overprinting of Basin and Range faulting. Included in overall Phase II goals is the need to reduce the uncertainty and improve confidence in modeling results. New characterization efforts are underway, and results from the first year of a three-year well drilling plan are presented.

Pawloski, G A; Wurtz, J; Drellack, S L

2009-12-29

53

Analysis of fractures in volcanic cores from Pahute Mesa, Nevada Test Site  

Microsoft Academic Search

The Nevada Test Site (NTS), located in Nye County, southern Nevada, was the location of 828 announced underground nuclear tests, conducted between 1951 and 1992. Approximately one-third of these tests were detonated near or below the water table. An unavoidable consequence of these testing activities was introducing radionuclides into the subsurface environment, impacting groundwater. Groundwater flows beneath the NTS almost

S. L. Jr. Drellack; L. B. Prothro; K. E. Roberson

1997-01-01

54

Ganges Chasma Landing Site: Access to Sand Sheets, Wall Rock and Layered Mesa Material  

NASA Astrophysics Data System (ADS)

The floor of Ganges Chasma offers an ideal landing site for the MSP 2001 lander. This site is exquisite both in terms of engineering constraints and science objectives. The floor of Ganges Chasma is mantled with an extensive sand sheet. Sand sheets develop in conditions which are unfavorable for dune formation. These may include a high water table, periodic flooding, surface cementation, and coarse grained sands. The most extensive sand sheets on Earth are located in the eastern Sahara. These sheets have a relief of less than 1 m over wide areas and total thickness ranges from a few cm to 10 m. The surfaces of sand sheets are composed of granule to pebbly lag deposits. Sand sheets provide an extremely safe landing site and have very low relief. The safety concerns regarding slopes, rocks, and dust would be alleviated by the sand sheet. Furthermore, this vast sand sheet would allow the Marie Curie Rover to cover great distances. Rover navigability would be very easily compared to the tedious rock avoidance maneuvers that Sojourner had to accomplish. This exercise would be an important precursor test for the more capable Athena Rover which will execute longer traverses. Moreover, the Rover has already been "field tested" on sand at the JPL Mars sandbox. Dust should not be a problem: Thermal inertia is 7.7 to 8.9 cgs units. This site satisfies all engineering constraints.

Rice, James W., Jr.

1999-06-01

55

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

56

Quality assurance and analysis of water levels in wells on Pahute Mesa and vicinity, Nevada Test Site, Nye County, Nevada.  

National Technical Information Service (NTIS)

Periodic and continual water-level data from 1963-1998 were compiled and quality assured for 65 observation wells on Pahute Mesa and vicinity, Nye County, Nevada. As part of the quality assurance of all water levels, ancillary data pertinent to computing ...

J. M. Fenelon

2000-01-01

57

2. EAST SIDE; LOOKING WEST FROM SITE OF STOCKYARDS; UPPER ...  

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

2. EAST SIDE; LOOKING WEST FROM SITE OF STOCKYARDS; UPPER LEFT CORNER WAS ORIGINALLY ATTACHED TO SHEEP HOTEL (BUILDING 142); UPPER RIGHT CORNER WAS ORIGINALLY ATTACHED TO HOG HOTEL (BUILDING 138) - Rath Packing Company, Beef Killing Building, Sycamore Street between Elm & Eighteenth Streets, Waterloo, Black Hawk County, IA

58

9. VIEW OF SITE B FROM EAST END OF ANDERSON ...  

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

9. VIEW OF SITE B FROM EAST END OF ANDERSON WAY, FACING WEST (BUILDINGS 126, 128, 129, 130, and 131 ARE VISIBLE.) - Fort McPherson, World War II Station Hospital, Structures, Bordered by Hardee & Thorne Avenues & Howe Street, Atlanta, Fulton County, GA

59

Stockholm Institute of Transition Economics and East European Economies (SITE)  

NSDL National Science Digital Library

The Stockholm Institute of Transition Economics and East European Economies (SITE/Ãstekonomiska Institutet) is an independent research institute at the Stockholm School of Economics. SITE is concerned with the transition from planned to market economies in Eastern Europe and the former Soviet Union. Academic research on-site includes a bibliography of recent working papers (1990-present), with most papers from 1998 available for download [.pdf]. Monthly updates of key indicators discussed in the quarterly SITE publication Russian Economic Trends (RET) are also available [.pdf] in addition to RET subscription information and other discussion channels.

60

Mockingbird Mesa Survey, Southwestern Colorado.  

National Technical Information Service (NTIS)

An intensive survey was conducted on 3,976 acres of land on Mockingbird Mesa in southwestern Colorado, between 1981 and 1984. The report contains a synthesis of the data collected during these years. A total of 684 sites were located. The majority dated t...

J. Fetterman L. Honeycutt

1987-01-01

61

Remedial actions at the former Climax Uranium Company, Uranium Mill site, Grand Junction, Mesa County, Colorado. Volume 1, Text: Final environmental impact statement  

SciTech Connect

This statement evaluates and compares the environmental impacts associated with the remedial actions of the residual radioactive materials remaining at the inactive uranium processing site and associated vicinity properties at Grand Junction, Mesa County, Colorado. This statement is also intended to aid the BLM in amending their management framework plans and final resource management plan, as well as assisting in compliance with the withdrawal application as appropriate. The site is a 114-acre tract of private and state owned land which contains approximately 3.1 million cubic yards of tailings and associated contaminated soils. The vicinity properties are homes, businesses, public buildings, and vacant lots which may have been contaminated during construction by the use of tailings as building material. An estimated 3465 vicinity properties would be cleaned up during remedial action of the tailings pile. The tailings were produced by the former Climax Uranium Company which processed uranium ore, which it sold to the US Atomic Energy Commission from 1951 to 1966 and to private sources from 1966 to 1970. This statement evaluates six alternatives for stabilization and disposal of the tailings and other contaminated materials: (1) No action. (2) Stabilization at the Grand Junction site. (3) Disposal at the Cheney Reservoir site with truck transport. (4) Disposal at the Cheney Reservoir site with train and truck transport. (5) Disposal at the Two Road site with truck transport. (6) Disposal at the Two Road site with train and truck transport. All of the alternatives except no action include remedial action at an estimated 3465 vicinity properties. Alternative 3 is DOE`s preferred alternative.

None

1986-12-01

62

Mining coal on Black Mesa  

Microsoft Academic Search

Black Mesa is a remote highland in northeastern Arizona. Peabody Coal Company began surface mining operations on Black Mesa in 1970, leasing 64,868 acres from the Navajo and Hopi tribes. Approximately 12 million tons of coal are mined annually. The paper presented discussed Peabody's mining operation on Black Mesa. Topics detailed include transportation of the coal via the Black Mesa

Grow

1981-01-01

63

Analysis of the Variability of Classified and Unclassified Radiological Source term Inventories in the Rainier Mesa/Shoshone Mountain Area, Nevada Test Site  

SciTech Connect

It has been proposed that unclassified source terms used in RM/SM reactive transport modeling investigations should be based on yield-weighted source terms calculated using the RM/SM average source term from Bowen et al. (2001) and the unclassified announced yields reported in DOE/NV-209. This unclassified inventory is likely to be used in unclassified contaminant boundary calculations and is, thus, relevant to compare to the classified inventory. They have examined the classified radionuclide inventory produced by 73 underground nuclear tests conducted in the Rainier Mesa/Shoshone Mountain (RM/SM) area of the Nevada Test Site. The goals were to (1) evaluate the variability in classified radiological source terms among the 73 tests and (2) and compare that variability and inventory uncertainties to an average unclassified inventory (e.g. Bowen 2001). To evaluate source term variability among the 73 tests, radiological inventories were compared on two relative scales: geometric mean and yield-weighted geometric mean. Furthermore, radiological inventories were either decay corrected to a common date (9/23/1992) or the time zero (t{sub 0}) of each test. Thus, a total of four data sets were produced. The date of 9/23/1992 was chosen based on the date of the last underground nuclear test at the Nevada Test Site.

Zhao, P; Zavarin, M

2008-06-04

64

Soils and geomorphology of the East Chestnut Ridge site  

SciTech Connect

Soil mapping of the East Chestnut Ridge site in conjunction with subsurface soil and rock coring provides an in-depth evaluation of the site and its suitability for disposal of wastes. Landforms and surface and subsurface hydrology, the natural, undisturbed, soil-saprolite-geohydrology system beneath the zone of engineering modifications provides for the ultimate containment of wastes and a means for the filtration and purification of any leachate before it reaches the aquifer. The surface location and extent of each geologic formation on the site were mapped. These locations correlated well with projections of subsurface contacts to the surface even through the criteria used by the pedologist and geologist to identify soil and rock from the same formation may be different. Soil thickness over bedrock of the Copper Ridge, Chepultepec, Longview, and Kingsport Formations is sufficient to provide considerable buffering between trench bottoms and groundwater or rock. Soil thickness over the Mascot Formation is comparatively thin, and pinnacles and ledges exposed on steeper sideslopes are common. Soil underlain by the Mascot Formation is not suited for a trench landfill. According to soil coring and active borrow pit observations, chert beds in the soil and saprolite are preferred zones of water flow. Construction of adequate clay liners beneath disposal units sited on the Longview dolomite may require placement and compaction of other native soils to achieve sufficiently low soil permeabilities. Karst geomorphic processes that initiated the formation of dolines evidently started several million years ago. Doline formation and enlargement is episodic, with short periods of activity followed by long periods of stability. Analysis of doline soil stratigraphy suggests that most of the large dolines on the site have been stable for most of the past 10,000 to 1000,000 years. 8 refs., 9 figs.

Lietzke, D.A.; Ketelle, R.H.; Lee, R.R. (Lietzke (D.A.), Rutledge, TN (USA); Oak Ridge National Lab., TN (USA))

1989-10-01

65

Estimation of unsaturated zone traveltimes for Rainier Mesa and Shoshone Mountain, Nevada Test Site, Nevada, using a source-responsive preferential-flow model  

SciTech Connect

Traveltimes for contaminant transport by water from a point in the unsaturated zone to the saturated zone are a concern at Rainier Mesa and Shoshone Mountain in the Nevada Test Site, Nevada. Where nuclear tests were conducted in the unsaturated zone, contaminants must traverse hundreds of meters of variably saturated rock before they enter the saturated zone in the carbonate rock, where the regional groundwater system has the potential to carry them substantial distances to a location of concern. The unsaturated-zone portion of the contaminant transport path may cause a significant delay, in addition to the time required to travel within the saturated zone, and thus may be important in the overall evaluation of the potential hazard from contamination. Downward contaminant transport through the unsaturated zone occurs through various processes and pathways; this can lead to a broad distribution of contaminant traveltimes, including exceedingly slow and unexpectedly fast extremes. Though the bulk of mobile contaminant arrives between the time-scale end members, the fastest contaminant transport speed, in other words the speed determined by the combination of possible processes and pathways that would bring a measureable quantity of contaminant to the aquifer in the shortest time, carries particular regulatory significance because of its relevance in formulating the most conservative hazard-prevention scenarios. Unsaturated-zone flow is usually modeled as a diffusive process responding to gravity and pressure gradients as mediated by the unsaturated hydraulic properties of the materials traversed. The mathematical formulation of the diffuse-flow concept is known as Richards' equation, which when coupled to a solute transport equation, such as the advection-dispersion equation, provides a framework to simulate contaminant migration in the unsaturated zone. In recent decades awareness has increased that much fluid flow and contaminant transport within the unsaturated zone takes place as preferential flow, faster than would be predicted by the coupled Richards' and advection-dispersion equations with hydraulic properties estimated by traditional means. At present the hydrologic community has not achieved consensus as to whether a modification of Richards' equation, or a fundamentally different formulation, would best quantify preferential flow. Where the fastest contaminant transport speed is what needs to be estimated, there is the possibility of simplification of the evaluation process. One way of doing so is by a two-step process in which the first step is to evaluate whether significant preferential flow and solute transport is possible for the media and conditions of concern. The second step is to carry out (a) a basic Richards' and advection-dispersion equation analysis if it is concluded that preferential flow is not possible or (b) an analysis that considers only the fastest possible preferential-flow processes, if preferential flow is possible. For the preferential-flow situation, a recently published model describable as a Source-Responsive Preferential-Flow (SRPF) model is an easily applied option. This report documents the application of this two-step process to flow through the thick unsaturated zones of Rainier Mesa and Shoshone Mountain in the Nevada Test Site. Application of the SRPF model involves distinguishing between continuous and intermittent water supply to preferential flow paths. At Rainier Mesa and Shoshone Mountain this issue is complicated by the fact that contaminant travel begins at a location deep in the subsurface, where there may be perched water that may or may not act like a continuous supply, depending on such features as the connectedness of fractures and the nature of impeding layers. We have treated this situation by hypothesizing both continuous and intermittent scenarios for contaminant transport to the carbonate aquifer and reporting estimation of the fastest speed for both of these end members.

Brian A. Ebel; John R. Nimmo

2009-09-11

66

Digital reconstruction on geographical environment of Neolithic human activities in the Lingjiatan site of Chaohu City, East China  

NASA Astrophysics Data System (ADS)

The Chaohu Lake Basin is an important area for ancient human activities in East China. The Lingjiatan site, which is located at the southeast of Chaohu City, Anhui Province, and 35 km north to the Yangtze River and 5 km south to the Taihu Mountain, is the most representative Neolithic Age site with advanced jade-carving techniques in this area. The 14C date of Lingjiatan Site is about 5600~5300aBP, the same time as the Hongshan culture and earlier than the Liangzhu culture, which falls into the Mid-Holocene epoch. Based on mid-high resolution remote sensing images and former archaeological materials, combined with field investigations and sampling analysis of the archaeological site profile of Lingjiatan Site as well as core drillings in the Chaohu Lake, the paper reconstructs the climate environment of the Lingjiatan site and the environmental background of ancient human activities during Mid-Holocene. The research results show that: (1) The ancients in Lingjiatan lived in the Holocene Optimum, its culture development was during the interim phase when the climate transformed from warm and wet to cool and dry. (2) The ground surface deposited in the last phase of late Pleistocene epoch (OSL dating is 11.6 +/-1.0 ka BP) was the living ground for Lingjiatan ancient humans. The sedimentary discontinuous surface may be caused by strong fluvial erosion under the warm and humid climatic conditions of the Mid-Holocene. (3) Originally, paleo-geomorphic surface was a level shallow mesa foreside southern part of Taihu Mountain, but was cut by fluvial waters and the geomorphologic configuration formed "finger-like" features alternately with strip hillocks and rivers. These features can be seen on the Landsat ETM+ remote sensing image, especially the depression area. This depression is now cropland, and was interpreted as the palaeochannels. (4) Based on the remote sensing image interpretation, the site was in a "peninsula shape" environment which had rivers flowing around the east, west and south sides of the Changgang terrain and that was good for rice planting, hunting, fishing and water transportation. (5) The most particular characteristic of the Lingjiatan site is the advanced jade production, those maybe have some relationship with the convenient shipping, trade exchanges and optimal environmental conditions, which was also conducive to rice cultivation.

Wang, Xinyuan; Zhang, Jie; Wu, Li; Zhou, Kunshu; Mo, Duowen

2009-09-01

67

Addendum for the Groundwater Flow Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nevada Test Site, Nye County, Nevada, Revision 0 (page changes)  

SciTech Connect

This document, which makes changes to Groundwater Flow Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nevada Test Site, Nye County, Nevada, S-N/99205--076, Revision 0 (June 2006) was prepared to address review comments of this final document by the Nevada Division of Environmental Protection (NDEP) in a letter dated July 19, 2006. The document includes revised pages that address NDEP review comments and comments from other document users. Change bars are included on these pages to identify where the text was revised. In addition to the revised pages, the following clarifications are made: • On Plate 1 (inserted in the back of the document), the ET Unit legend has been revised. The revised Plate 1 is included and replaces the original Plate 1. • Some of the Appendix D perturbation sensitivity analysis plots included on the CD for Sections D.3.1 and D.3.2 were not properly aligned. A revised CD is provided with all plots properly aligned.

John McCord

2007-05-01

68

Fire on the mesa: Archaeological investigations at the U19an borrow pit on the Nevada Test Site  

SciTech Connect

In 1984, the Desert Research Institute conducted an archaeological reconnaissance of a proposed borrow pit area known as U19an(bp) on the Nevada Test Site for the Department of Energy, Nevada Field Office. During this reconnaissance, four National Register quality archaeological sites were discovered and recorded as lithic scatter sites 26NY4201-4204. The DRI proposed that these sites should be avoided, or investigated if avoidance was not feasible. Analysis of the surface assemblages from U19an(bp) indicates that this area was used repeatedly over the past several thousand years for domestic activities, resource processing, and hunting. Dispersed lithic reduction stations are also scattered across the area. This report presents findings relevant to several issues that have not been considered in detail in previous archaeological studies of the NTS. Notably, a detailed discussion of the lithic reduction system utilized in the production of chalcedony bifaces is presented. In addition, the role of thermal alteration in local lithic technology is considered and the evidence for thermally fractured artifacts is investigated. The data recovered from U19an(bp) indicate that fire may have played a significant role in local site formation.

Amick, D.S.

1992-12-01

69

76 FR 30152 - East Calloway County Middle School Mercury Spill Site, Murray, Calloway County, KY; Notice of...  

Federal Register 2010, 2011, 2012, 2013

...FRL-9310-4] East Calloway County Middle School Mercury Spill Site, Murray, Calloway County...the East Calloway County Middle School Mercury Spill Site located in Murray, Calloway...County [[Page 30153

2011-05-24

70

Mining coal on Black Mesa  

SciTech Connect

Black Mesa is a remote highland in northeastern Arizona. Peabody Coal Company began surface mining operations on Black Mesa in 1970, leasing 64,868 acres from the Navajo and Hopi tribes. Approximately 12 million tons of coal are mined annually. The paper presented discussed Peabody's mining operation on Black Mesa. Topics detailed include transportation of the coal via the Black Mesa pipeline, dewatering of the slurry, water supply, and Peabody's cross-cultural training program. (JMT)

Grow, G.D.

1981-01-01

71

Numerical simulation of two-dimensional groundwater transport of tritium from the Cheshire (U-20N) site, Pahute Mesa, Nevada Test Site  

Microsoft Academic Search

Groundwater transport of tritium from the Cheshire (U-20n) site at the Nevada Test Site (NTS) is investigated using a stochastic approach and numerical simulations. The hydrogeologic system is modeled as a horizontal two dimensional fractured-rhyolite aquifer intersected by a rubble chimney that extends upward from the shot cavity. The chimney, which is considered to be more permeable than surrounding rocks,

K. Pohlmann; R. Andricevic; V. Vallikat

1993-01-01

72

Radiocarbon AMS dating of the ancient sites with earliest pottery from the Russian Far East  

NASA Astrophysics Data System (ADS)

Recently obtained radiocarbon accelerator mass spectrometry dates from the Gasya and Khummi sites (lower Amur River basin, the Russian Far East), on charcoal associated with pottery, fall within the interval 10345+/-110 to 13260+/-100 radiocarbon yr BP. Now both Russian Far East and southern Japanese Islands present evidence of the earliest pottery-making technology in the world starting about 13000 BP.

Kuzmin, Y. V.; Jull, A. J. T.; Lapshina, Z. S.; Medvedev, V. E.

1997-03-01

73

Location of a new ice core site at Talos Dome (East Antarctica)  

Microsoft Academic Search

In the frame of glaciology and palaeoclimate research, Talos Dome (72°48lS; 159°06lE), an ice dome on the East Antarctic plateau, represents the new selected site for a new deep ice core drilling. The increasing interest in this re- gion is due to the fact that the ice accumulation is higher here than in other domes in East Antarctica. A new

Stefano Urbini; Lili Cafarella; Achille Zirizzotti; Cesidio Bianchi; Ignazio Tabacco; Massimo Frezzotti; Ardito Desio; S. Maria

2006-01-01

74

A conceptual model and preliminary estimate of potential tritium migration from the Benham (U-20c) site, Pahute Mesa, Nevada Test Site  

SciTech Connect

U-20c is the site of a large below-water-table nuclear test near the Nevada Test Site boundary. A conceptual model of potential groundwater migration of tritium from U-20c is constructed and quantitatively evaluated in this report. The lower portion of the collapse chimney at Benham is expected to intersect 200 m of permeable rhyolite lava, overlain by similar thicknesses of low-permeability zeolitized bedded tuff, then permeable welded tuff. Vertical groundwater flow through the chimney is predicted to be minimal, horizontal transport should be controlled by the regional groundwater flow. Analytic solutions treating only advective transport indicate 1 to 2 km of tritium movement (95% confidence interval 0.7--2.5 km) within 5 years after test-related pressure-temperature transients have dissipated. This point lies at the axis of a potentiometric surface trough along the west edge of Area 20, Nevada Test Site. Within 25 years, movement is predicted to extend to 3 km (95% confidence interval 2--5 km) approximately to the intersection of the trough and the Nevada Test Site boundary. Considering the effects of radioactive decay, but not dispersion, plume concentration would fall below Safe Drinking Water Act standards by 204 years, at a predicted distance of 11 km (95% confidence interval 7--31 km). This point is located in the eastern portion of the Timber Mountain Caldera moat within the Nellis Air Force Range (military bombing range).

Brikowski, T.; Mahin, G. [Nevada Univ., Reno, NV (United States). Water Resources Center

1993-08-01

75

Groundwater Flow Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nevada Test Site, Nye County, Nevada, Revision 0  

SciTech Connect

The Pahute Mesa groundwater flow model supports the FFACO UGTA corrective action strategy objective of providing an estimate of the vertical and horizontal extent of contaminant migration for each CAU in order to predict contaminant boundaries. A contaminant boundary is the model-predicted perimeter that defines the extent of radionuclide-contaminated groundwater from underground nuclear testing above background conditions exceeding Safe Drinking Water Act (SDWA) standards. The contaminant boundary will be composed of both a perimeter boundary and a lower hydrostratigraphic unit (HSU) boundary. Additional results showing contaminant concentrations and the location of the contaminant boundary at selected times will also be presented. These times may include the verification period, the end of the five-year proof-of-concept period, as well as other times that are of specific interest. The FFACO (1996) requires that the contaminant transport model predict the contaminant boundary at 1,000 years and “at a 95% level of confidence.” The Pahute Mesa Phase I flow model described in this report provides, through the flow fields derived from alternative hydrostratigraphic framework models (HFMs) and recharge models, one part of the data required to compute the contaminant boundary. Other components include the simplified source term model, which incorporates uncertainty and variability in the factors that control radionuclide release from an underground nuclear test (SNJV, 2004a), and the transport model with the concomitant parameter uncertainty as described in Shaw (2003). The uncertainty in all the above model components will be evaluated to produce the final contaminant boundary. This report documents the development of the groundwater flow model for the Central and Western Pahute Mesa CAUs.

Greg Ruskauff

2006-06-01

76

Geology Fieldnotes: Mesa Verde National Park, Colorado  

NSDL National Science Digital Library

This National Park Service (NPS) site provides information about Mesa Verde National Park in southwestern Colorado, including geology, visitor information, illustrations, and additional links for more details. This park was home to the Anasazi people who were cliff dwellers in this area. Today you can see artifacts, native dwellings made of sandstone bricks, and learn about the Anasazi way of life, dating back to around 550 AD.

77

An inventory survey at the site of the proposed Kilauea Middle East Rift Zone (KMERZ), Well Site No. 2  

SciTech Connect

At the request of True Mid Pacific Geothermal, Archaeological Consultants of Hawaii, Inc. has conducted an inventory survey at the site of the proposed Kilauea Middle East Rift Zone (KMERZ), Well Site No.2, TMK: 1-2-10:3. The Principal Investigator was Joseph Kennedy M.A., assisted by Jacob Kaio, Field Supervisor and field crew Mark Borrello B.A., Michael O'Shaughnessy B.A., and Randy Adric. This report supercedes all previous reports submitted to the Historic Presentation Section of the Department of Land and Natural Resources. In addition to 100% surface coverage of the 400 x 400 foot well pad itself, 100% surface coverage of a substantial buffer zone was also completed. This buffer zone was established by the Department of Land and Natural Resources, Historic Preservation personnel and extends 1000 feet east and west of the well site and 500 feet north and south of the well site.

Kennedy, Joseph

1991-03-01

78

Numerical simulation of two-dimensional groundwater transport of tritium from the Cheshire (U-20N) site, Pahute Mesa, Nevada Test Site  

SciTech Connect

Groundwater transport of tritium from the Cheshire (U-20n) site at the Nevada Test Site (NTS) is investigated using a stochastic approach and numerical simulations. The hydrogeologic system is modeled as a horizontal two dimensional fractured-rhyolite aquifer intersected by a rubble chimney that extends upward from the shot cavity. The chimney, which is considered to be more permeable than surrounding rocks, is thought to act as a conduit for flow of tritiated groundwater from the cavity to the aquifer under a vertically upward hydraulic gradient. Heterogeneity of hydraulic conductivity in the aquifer is described as a random function with the mean, variance, and isotropic correlation length estimated from available field data. Realizations of the conductivity field having these statistical characteristics are generated with a numerical implementation of the turning bands algorithm. Several realizations of the spatially correlated random groundwater velocity field are then produced for each realization of the conductivity field using a numerical finite-element code. Inclusion of groundwater flux from the chimney produces a {open_quotes}groundwater mound{close_quotes} in the aquifer near the chimney, with a significant component of flow directed opposite to regional flow, thereby introducing highly non-uniform flow to the otherwise uniform flow field. Transport of tritium in the flow field away from the chimney is simulated with the particle tracking random walk (PTRW) technique, which is suitable for treating the processes of advection and dispersion. Effects on the distribution of tritium caused by flux from the chimney, aquifer porosity, and size of the tritium source area are analyzed. Results indicate that the magnitude of chimney flux is an important control on tritium plume behavior because the nonuniform flow conditions in the chimney region greatly increase dispersion of the plume when compared to the case without chimney flux.

Pohlmann, K.; Andricevic, R.; Vallikat, V.

1993-09-01

79

Argonne National Laboratory-East site environmental report for calendar year 1995  

SciTech Connect

This report presents the environmental report for the Argonne National Laboratory-East for the year of 1995. Topics discussed include: general description of the site including climatology, geology, seismicity, hydrology, vegetation, endangered species, population, water and land use, and archaeology; compliance summary; environmental program information; environmental nonradiological program information; ground water protection; and radiological monitoring program.

Golchert, N.W.; Kolzow, R.G. [Environmental Management Operation, Argonne National Lab., IL (United States)

1996-09-01

80

Modeling Approach/Strategy for Corrective Action Unit 99: Rainier Mesa and Shoshone Mountain, Nevada Test Site, Nye County, Nevada, Revision 1, with ROTC-1  

SciTech Connect

This document describes an approach for preliminary (Phase I) flow and transport modeling for the Rainier Mesa/Shoshone Mountain (RMSM) Corrective Action Unit (CAU). This modeling will take place before the planned Phase II round of data collection to better identify the remaining data gaps before the fieldwork begins. Because of the geologic complexity, limited number of borings, and large vertical gradients, there is considerable uncertainty in the conceptual model for flow; thus different conceptual models will be evaluated, in addition to different framework and recharge models. The transport simulations will not be used to formally calculate the Contaminant Boundary at this time. The modeling (Phase II) will occur only after the available data are considered sufficient in scope and quality.

Greg Ruskauff

2008-06-01

81

Argonne National Laboratory-East summary site environmental report for calendar year 2000  

Microsoft Academic Search

This booklet explains major portions of the ongoing environmental monitoring program conducted by Argonne National Laboratory-East in the calendar year 2000. The full Site Environmental Report, written by N.W. Golchert, R.G. Kolzow and L.P. Moos, can be obtained by contacting Argonne National Laboratory in Argonne, Illinois, 60439, or by going to the Web site (www.anl.gov). This booklet includes descriptions of

N. W. Golchert; R. G. Kolzow

2002-01-01

82

Hydrogeologic setting east of a low-level radioactive-waste disposal site near Sheffield, Illinois  

USGS Publications Warehouse

Core samples from 45 test wells and 4 borings were used to describe the glacial geology of the area east of the low-level radioactive-waste disposal site near Sheffield, Bureau County, Illinois. Previous work has shown that shallow ground water beneath the disposal site flows east through a pebbly-sand unit of the Toulon Member of the Glasford Formation. The pebbly sand was found in core samples from wells in an area extending northeast from the waste-disposal site to a strip-mine lake and east along the south side of the lake. Other stratigraphic units identified in the study area are correlated with units found on the disposal site. The pebbly-sand unit of the Toulon Member grades from a pebbly sand on site into a coarse gravel with sand and pebbles towards the lake. The Hulick Till Member, a key bed, underlies the Toulon Member throughout most of the study area. A narrow channel-like depression in the Hulick Till is filled with coarse gravelly sand of the Toulon Member. The filled depression extends eastward from near the northeast corner of the waste-disposal site to the strip-mine lake. (USGS)

Foster, J. B.; Garklavs, George; Mackey, G. W.

1984-01-01

83

76 FR 13182 - Settlement Agreement for Recovery of Past Response Costs; 345 North 700 East, Richfield PCE Site...  

Federal Register 2010, 2011, 2012, 2013

...9606(a), 9607, and 9622, between the United States Environmental Protection Agency (EPA) and Jerry Thomas and Katrina Thomas (Settling Parties) regarding the Richfield PCE Site (Site), located at 345 North 700 East,...

2011-03-10

84

Modules for Experiments in Stellar Astrophysics (MESA)  

NASA Astrophysics Data System (ADS)

Stellar physics and evolution calculations enable a broad range of research in astrophysics. Modules for Experiments in Stellar Astrophysics (MESA) is a suite of open source, robust, efficient, thread-safe libraries for a wide range of applications in computational stellar astrophysics. A one-dimensional stellar evolution module, MESAstar, combines many of the numerical and physics modules for simulations of a wide range of stellar evolution scenarios ranging from very low mass to massive stars, including advanced evolutionary phases. MESAstar solves the fully coupled structure and composition equations simultaneously. It uses adaptive mesh refinement and sophisticated timestep controls, and supports shared memory parallelism based on OpenMP. State-of-the-art modules provide equation of state, opacity, nuclear reaction rates, element diffusion data, and atmosphere boundary conditions. Each module is constructed as a separate Fortran 95 library with its own explicitly defined public interface to facilitate independent development. Several detailed examples indicate the extensive verification and testing that is continuously performed and demonstrate the wide range of capabilities that MESA possesses. These examples include evolutionary tracks of very low mass stars, brown dwarfs, and gas giant planets to very old ages; the complete evolutionary track of a 1 M sun star from the pre-main sequence (PMS) to a cooling white dwarf; the solar sound speed profile; the evolution of intermediate-mass stars through the He-core burning phase and thermal pulses on the He-shell burning asymptotic giant branch phase; the interior structure of slowly pulsating B Stars and Beta Cepheids; the complete evolutionary tracks of massive stars from the PMS to the onset of core collapse; mass transfer from stars undergoing Roche lobe overflow; and the evolution of helium accretion onto a neutron star. MESA can be downloaded from the project Web site (http://mesa.sourceforge.net/).

Paxton, Bill; Bildsten, Lars; Dotter, Aaron; Herwig, Falk; Lesaffre, Pierre; Timmes, Frank

2011-01-01

85

MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA)  

SciTech Connect

Stellar physics and evolution calculations enable a broad range of research in astrophysics. Modules for Experiments in Stellar Astrophysics (MESA) is a suite of open source, robust, efficient, thread-safe libraries for a wide range of applications in computational stellar astrophysics. A one-dimensional stellar evolution module, MESAstar, combines many of the numerical and physics modules for simulations of a wide range of stellar evolution scenarios ranging from very low mass to massive stars, including advanced evolutionary phases. MESAstar solves the fully coupled structure and composition equations simultaneously. It uses adaptive mesh refinement and sophisticated timestep controls, and supports shared memory parallelism based on OpenMP. State-of-the-art modules provide equation of state, opacity, nuclear reaction rates, element diffusion data, and atmosphere boundary conditions. Each module is constructed as a separate Fortran 95 library with its own explicitly defined public interface to facilitate independent development. Several detailed examples indicate the extensive verification and testing that is continuously performed and demonstrate the wide range of capabilities that MESA possesses. These examples include evolutionary tracks of very low mass stars, brown dwarfs, and gas giant planets to very old ages; the complete evolutionary track of a 1 M {sub sun} star from the pre-main sequence (PMS) to a cooling white dwarf; the solar sound speed profile; the evolution of intermediate-mass stars through the He-core burning phase and thermal pulses on the He-shell burning asymptotic giant branch phase; the interior structure of slowly pulsating B Stars and Beta Cepheids; the complete evolutionary tracks of massive stars from the PMS to the onset of core collapse; mass transfer from stars undergoing Roche lobe overflow; and the evolution of helium accretion onto a neutron star. MESA can be downloaded from the project Web site (http://mesa.sourceforge.net/).

Paxton, Bill; Bildsten, Lars [Kavli Institute for Theoretical Physics and Department of Physics, Kohn Hall, University of California, Santa Barbara, CA 93106 (United States); Dotter, Aaron; Herwig, Falk [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, STN CSC, Victoria, BC V8W 3P6 (Canada); Lesaffre, Pierre [LERMA-LRA, CNRS UMR8112, Observatoire de Paris and Ecole Normale Superieure, 24 Rue Lhomond, 75231 Paris Cedex 05 (France); Timmes, Frank [School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ 85287-1404 (United States)

2011-01-15

86

Environmental assessment of remedial action at vicinity properties associated with the former Climax Uranium Company Uranium Mill Site, Grand Junction, Mesa County, Colorado  

SciTech Connect

This document assesses and compares the environmental impacts of various alternatives for remedial action at the UMTRA Project vicinity properties in Mesa County, Colorado. Vicinity properties are homes, businesses, public buildings, and vacant lots which may have been contaminated during construction by the use of tailings as a building material or as fill material before the hazards associated with this material were known. It is estimated that 3585 contaminated properties remain to be formally included on the vicinity property list and thereby require remedial action. The Uranium Mill Tailings Radiation Control Act (UMTRCA) of 1978, Public Law 95-604, authorized the US Department of Energy to perform remedial action at these properties. The US Environmental Protection Agency promulqated standards for remedial action (40 CRF Part 192). The alternatives addressed in this environmental assessment (EA) including taking no action toward remedial action at the vicinity properties, conducting remedial action at a rate of 500 properties per year, and conducting remedial action at a rate of 800 properties per year. 3 figs., 4 tabs.

Not Available

1986-07-01

87

Analysis of the surface ozone during summer and autumn at a coastal site in East China.  

PubMed

The levels and temporal variations of surface ozone at a coastal site in East China during summer and autumn were analyzed and the influences of meteorological parameters on ozone were investigated. An inland city was chosen as a comparison site. The main results and conclusions of this study are: (1) ozone pollution, with a maximum 1 h concentration of 150.98 ppbv, was severe during summer and autumn at the coastal site; (2) the ozone level was obviously higher at the coastal site than that at the inland site in September; (3) besides temperature and solar radiation, sea-land breeze circulation is an important factor influencing the ozone level at the coastal site, and sea breeze often induce high ozone levels (the average ozone concentration for sea breeze was about 13 ppbv higher than that for land breeze). PMID:20401603

Yin, Yongquan; Shan, Wenpo; Ji, Xia; Deng, Xingyan; Cheng, Jian'an; Li, Laimin

2010-04-17

88

Improvement of the radon situation at former uranium mining and milling sites in East Germany  

Microsoft Academic Search

Uranium mining in East Germany was accompanied by piling up of more than 300 Mio m3 of radioactive waste rock material, often adjacent to settlements. This resulted at some places in mean outdoor radon concentrations of 1000 Bq\\/m3 and more.In 1991, the national corporation WISMUT was charged with rehabilitation of the sites. For waste rock piles, WISMUT developed the concept

P. Schmidt; J. Regner

2005-01-01

89

Changes in the site distribution of malignant melanoma in South East Scotland (1979-2002)  

PubMed Central

Scottish Melanoma Group (SMG) data on 2790 melanoma (MM) cases in South East Scotland over a 24-year time period were analysed in four periods each of 6 years duration grouped into frequently exposed, intermittently exposed, and always covered sites. Incidence increased significantly over time with females having a higher incidence rate than males. In both sexes, the proportion of cases seen on the posterior trunk and arm increased significantly (P<0.001), but declines were seen in the proportion of leg tumours in males (P=0.09) and of head tumours in females (P=0.011). Although the proportion of cases decreased for certain sites, the actual MM incidence increased at all sites. A significant increase in incidence occurred at usually and always covered sites (P<0.001 and P<0.001, respectively) in females and at usually covered sites in males (P<0.001).

Mowbray, M; Stockton, D L; Doherty, V R

2007-01-01

90

Potential sites suitable for relocation and/or reprocessing of the Grand Junction and Rifle uranium-mill-tailings piles  

SciTech Connect

The procedure and results of a regional search for sites that appear to be suitable for the relocation and/or reprocessing of the Grand Junction and Rifle uranium mill tailings piles are described. This search identified nine potential sites within the study area that are offered to the Candidate Site Review Committee for further consideration. All nine sites can be used for joint disposal of the uranium tailings in both Grand Junction and Rifle. Disposal of any individual pile at any of the nine sites may also be considered by the Committee. It is the responsibility of the Committee to determine which of these sites should be recommended to the US Department of Energy for detailed evaluation of their suitability for uranium tailings disposal. This should include consideration of sites for joint disposal as well as disposal in separate sites. All sites are entirely on federal lands administered by the Bureau of Land Management. The sites fall within five general geographic locations. Two Road, McDonald Creek, and 6 and 50 Reservoir sites lie west of Mack near the Utah-Colorado border. East Salt Creek and Camp Gulch sites are north of Mack near the Mesa-Garfield County Line. Halls Basin and Cheney Reservoir sites are found southeast of Grand Junction west of and below Grand Mesa. Lucas Mesa site lies east of DeBeque across the Colorado River. Flatiron Mesa site is south of Rifle on the northeast flank of Battlement Mesa. A comprehensive site selection process was used to identify the recommended potential sites. None of the sites are completely ideal when all relevant factors are considered. The Committee must compare and weigh the advantages and disadvantages of each site to determine which sites are the most favorable for continued evaluation for long-term containment of the uranium tailings. It must be emphasized that this investigation is of a regional nature and therefore is preliminary.

Not Available

1982-01-01

91

Remedial actions at the former Climax Uranium Company, Uranium Mill site, Grand Junction, Mesa County, Colorado. Volume 2, Appendices: Final environmental impact statement  

SciTech Connect

This volume contains Appendix F--hydrology report, and Appendix G--flood plain and wetland assessment. Contents of the hydrology report include: surface water; ground water; potentially affected hydrogeologic environment-processing site; potentially affected hydrogeologic environment-Cheney reservoir site; potentially affected hydrogeologic environment-Two Road site; and conclusions-ground water.

none,

1986-12-01

92

Red Sky with Red Mesa  

ScienceCinema

With those fossil fuel reserves dwindling, the scientific race is on to convert the sunlight harvested by plants into new fuels that will augment and eventually replace petroleum. It's a critical challenge. But there is a powerful tool tackling it: Sandia National Laboratories' Red Sky Supercomputer with a special cluster called Red Mesa dedicated specifically to the National Renewable Energy Laboratory (NREL).

93

Turbulence in MESA-2D.  

National Technical Information Service (NTIS)

The MESA-2D Eulerian, compressible flow code has been extended to include the effects of turbulence. In this turbulence model, transport equations for the turbulent kinetic energy k, the turbulent scale s, and the turbulence mass flux components a(sub i) ...

B. Daly

1992-01-01

94

Surface Motion Induced by Nuclear Explosions Beneath Pahute Mesa. Part I. Halfbreak, Greeley, Scotch, Boxcar Events.  

National Technical Information Service (NTIS)

Results of surface motion studies conducted by Sandia Laboratories during seven underground nuclear explosions detonated beneath Pahute Mesa, Areas 19 and 20 of the Nevada Test Site, between 1966 and 1973 are reported. The report is divided into two parts...

W. R. Perret

1976-01-01

95

INVESTIGATION OF SITE EFFECTS AT DAMAGED PORTS DURING THE 2011 GREAT EAST JAPAN EARTHQUAKE DISASTER  

NASA Astrophysics Data System (ADS)

After a large earthquake, it is quite important to estimate strong ground motions at the site of damaged port structures to analyze damage mechanism and to determine restoration policy. Although several strong motion records were successfully obtained at damaged ports during the 2011 Great East Japan Earthquake Disaster (Takahashi et al., 2011), the records do not necessarily represent strong ground motions at the site of structural damage, because, according to recent knowledge, site effects can vary significantly within a relatively small area, even within a port. Thus, in this study, microtremor measurements and aftershock observations were conducted at damaged ports. The results of the study can be summarized as follows: 1) Gross distribution of the site effects within the ports were revealed at 8 ports where microtremor observations were conducted. At 7 ports (9 points), detailed site effects were revealed based on aftershock observations. 2) At Ofunato Port, it is estimated that the site effects are significantly different between the berthing facilities and the strong motions stations. The site effects for the berthing facilities were newly estimated based on aftershock records. 3) At Ishinomaki Port, the site effects at the berthing facilities are close to those at the K-NET strong motion station except for the Hibarino berth (-13m), the deepest berth in the port. The site effects for the Hibarino berth were newly estimated based on aftershock records. 4) According to the overall results, peak values of microtremor H/V spectra and those of site amplification factors are more or less correlated to each other.

Nozu, Atsushi; Wakai, Atsushi

96

Archaeological survey of the 200 East and 200 West Areas, Hanford Site, Washington  

SciTech Connect

Responding to a heavy demand for cultural resource reviews of excavation sites, the Westinghouse Hanford Company contracted with Pacific Northwest Laboratory to conduct a comprehensive archaeological resource review for the 200 Areas of the Hanford Site, Washington. This was accomplished through literature and records review and an intensive pedestrian survey of all undisturbed portions of the 200 East Area and a stratified random sample of the 200 West Area. The survey, followed the Secretary of the Interior's guidelines for the identification of historic properties. The result of the survey is a model of cultural resource distributions that has been used to create cultural resource zones with differing degrees of sensitivity. 11 refs., 7 figs., 1 tab.

Chatters, J.C.; Cadoret, N.A.

1990-03-01

97

Argonne National Laboratory-East site environmental report for calendar year 1998.  

SciTech Connect

This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL-E) for 1998. To evaluate the effects of ANL-E operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL-E site were analyzed and compared with applicable guidelines and standards. A variety of radionuclides were measured in air, surface water, on-site groundwater, and bottom sediment samples. In addition, chemical constituents in surface water, groundwater, and ANL-E effluent water were analyzed. External penetrating radiation doses were measured, and the potential for radiation exposure to off-site population groups was estimated. Results are interpreted in terms of the origin of the radioactive and chemical substances (i.e., natural, fallout, ANL-E, and other) and are compared with applicable environmental quality standards. A US Department of Energy dose calculation methodology, based on International Commission on Radiological Protection recommendations and the US Environmental Protection Agency's CAP-88 (Clean Air Act Assessment Package-1988) computer code, was used in preparing this report. The status of ANL-E environmental protection activities with respect to the various laws and regulations that govern waste handling and disposal is discussed, along with the progress of environmental corrective actions and restoration projects.

Golchert, N.W.; Kolzow, R.G.

1999-08-26

98

Argonne National Laboratory-East site environmental report for calendar year 1991  

SciTech Connect

This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL) for 1991. To evaluate the effects of ANL operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared to applicable guidelines and standards. A variety of radionuclides was measured in air, surface water, groundwater, soil, grass, and bottom sediment samples. Chemical constituents in surface water, groundwater, and ANL effluent water were analyzed. External penetrating radiation doses were measured and the potential for radiation exposure to off-site population groups was estimated. Results are interpreted in terms of the origin of the radioactive and chemical substances (natural, fallout, ANL, and other) and are compared with applicable environmental quality standards. A US Department of Energy (DOE) dose calculation methodology, based on International Commission on Radiological Protection (ICRP) recommendations and the CAP-88 version of the EPA-AIRDOSE/RADRISK computer code, is used in this report. The status of ANL environmental protection activities with respect to the various laws and regulations which govern waste handling and disposal is discussed. This report also discusses progress being made on environmental corrective actions and restoration projects from past activities.

Golchert, N.W.; Duffy, T.L.; Moos, L.P.

1992-05-01

99

Argonne National Laboratory-East site environmental report for calendar year 1994  

SciTech Connect

This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL) for 1994. To evaluate the effects of ANL operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared to applicable guidelines and standards. A variety of radionuclides was measured in air, surface water, groundwater, soil, grass, and bottom sediment samples. In addition, chemical constituents in surface water, groundwater, and ANL effluent water were analyzed. External penetrating radiation doses were measured and the potential for radiation exposure to off-site population groups was estimated. The results of the surveillance program are interpreted in terms of the origin of the radioactive and chemical substances (natural, fallout, ANL, and other) and are compared with applicable environmental quality standards. A US Department of Energy (DOE) dose calculation methodology, based on International Commission on Radiological Protection (ICRP) recommendations and the CAP-88 version of the EPA-AIRDOSE/RADRISK COMPUTER CODE, is used in this report. The status of ANL environmental protection activities with respect to the various laws and regulations which govern waste handling and disposal is discussed. This report also discusses progress being made on environmental corrective actions and restoration projects.

Golchert, N.W.; Kolzow, R.G.

1995-05-01

100

Argonne National Laboratory--East site environmental report for calendar year 1990  

SciTech Connect

This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL) for 1990. To evaluate the effects of ANL operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared to applicable guidelines and standards. A variety of radionuclides was measured in air, surface water, groundwater, soil, grass, bottom sediment, and milk samples. In addition, chemical constituents in surface water, groundwater, and ANL effluent water were analyzed. External penetrating radiation doses were measured and the potential for radiation exposure to off-site population groups was estimated. The results of the surveillance program are interpreted in terms of the origin of the radioactive and chemical substances (natural, fallout, ANL, and other) and are compared with applicable environmental quality standards. A US Department of Energy (DOE) dose calculation methodology, based on International Commission on Radiological Protection (ICRP) recommendations, is used in this report. The status of ANL environmental protection activities with respect to the various laws and regulations which govern waste handling and disposal is discussed. This report also discusses progress being made on environmental corrective actions and restoration projects from past activities.

Golchert, N.W.; Duffy, T.L.; Moos, L.P.

1991-07-01

101

Azaarenes in atmospheric particulate matter samples of three different urban sites in east of France  

NASA Astrophysics Data System (ADS)

Azaarenes concentrations in East of France urban atmospheres through the period between April 2006 and February 2007 are described. Sampling sites were chosen to be representative of three different regions and were situated in Strasbourg ("Alsace region"), in Besançon ("Franche-Comté region") and in Spicheren ("Lorraine region"). In order to compare the seasonal variability, the sampling campaigns have been performed during the four seasons in Strasbourg, and during two opposed seasons (summer and winter) in Besançon and in Spicheren. Moreover, the sampling campaigns have been performed during 6 h time intervals per day (04:00-10:00; 10:00-16:00; 16:00-22:00 and 22:00-04:00) to assess the diurnal variations of azaarenes concentrations. Mean total azaarenes concentrations were 2.8 ng m-3 in Strasbourg, 1.6 ng m-3 in Besançon and 1.0 ng m-3 in Spicheren. Seasonal variations in the azaarenes concentrations occur with the greatest abundance of all species in the colder months when combustion sources are greatest and when azaarene compounds are mainly associated with the particle phase. A diurnal variation of compound concentrations in the three sites, in warm period, has been observed in accordance with the intensity of the vehicle circulation, with highest concentrations during the morning (04:00-10:00) and the evening (16:00-22:00). In cold period, there is no difference of concentration between these two time intervals of high vehicle circulation in Strasbourg site and in Besançon site. Moreover, in Spicheren site, the highest concentrations were observed during the evening. In this way, it seems that the contribution of domestic heating influenced the diurnal variations of some compounds on the three sites.

Delhomme, Olivier; Millet, Maurice

2012-02-01

102

Evaluation of Cesium, Strontium, and Lead Sorption, Desorption, and Diffusion in Cores from Western Pahute Mesa, Nevada Test Site, based on Macroscopic and Spectroscopic Investigations  

SciTech Connect

The interaction of radionuclides and other contaminants with minerals and other aquifer materials controls the rate of migration of these contaminants in groundwater. The stronger these interactions, the more a radionuclide will be retarded. Processes such as sorption and diffusion often control the migration of inorganic compounds in aquifers. These processes are often controlled by the nature of the ions of interest, the nature of the aquifer materials, and the specific geochemical conditions. Parameters describing sorption and diffusion of radionuclides and other inorganic ions on aquifer materials are used in transport codes to predict the potential for migration of these contaminants into the accessible environment. Sorption and diffusion studies can reduce the uncertainty of radionuclide transport modeling on the Nevada Test Site (NTS) and other nuclear testing areas.

Charalambos Papelis; Wooyong Um

2003-03-01

103

Phase I Hydrologic Data for the Groundwater Flow and Contaminant Transport Model of Corrective Action Unit 99: Rainier Mesa/Shoshone Mountain, Nevada Test Site, Nye County, Nevada, Revision 1  

SciTech Connect

This document presents a summary and framework of the available hydrologic data and other information directly relevant to the development of the Rainier Mesa/Shoshone Mountain (RMSM) Corrective Action Unit (CAU) 99 groundwater flow models. Where appropriate, data and information documented elsewhere are briefly summarized with reference to the complete documentation.

Nathan Bryant

2008-05-01

104

Phase I Contaminant Transport Parameters for the Groundwater Flow and Contaminant Transport Model of Corrective Action Unit 99: Rainier Mesa/Shoshone Mountain, Nevada Test Site, Nye County, Nevada, Revision 1  

SciTech Connect

This document presents a summary and framework of available transport data and other information directly relevant to the development of the Rainier Mesa/Shoshone Mountain (RMSM) Corrective Action Unit (CAU) 99 groundwater transport model. Where appropriate, data and information documented elsewhere are briefly summarized with reference to the complete documentation.

Nathan Bryant

2008-05-01

105

ARNOLD MESA ROADLESS AREA, ARIZONA.  

USGS Publications Warehouse

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.

Wolfe, Edward, W.; McColly, Robert, A.

1984-01-01

106

6. VIEW OF NEW PUMP PLANT CONSTRUCTION, LOOKING EAST. (THIS ...  

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

6. VIEW OF NEW PUMP PLANT CONSTRUCTION, LOOKING EAST. (THIS MAY BE THE FOUNDATION FOR THE NEW STANDPIPE.) March 13, 1952 - Highline Canal & Pumping Station, South side of Salt River between Tempe, Phoenix & Mesa, Tempe, Maricopa County, AZ

107

Phase I Transport Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nevada Test Site, Nye County, Nevada with Errata Sheet 1, 2, 3, Revision 1  

SciTech Connect

As prescribed in the Pahute Mesa Corrective Action Investigation Plan (CAIP) (DOE/NV, 1999) and Appendix VI of the Federal Facility Agreement and Consent Order (FFACO) (1996, as amended February 2008), the ultimate goal of transport analysis is to develop stochastic predictions of a contaminant boundary at a specified level of uncertainty. However, because of the significant uncertainty of the model results, the primary goal of this report was modified through mutual agreement between the DOE and the State of Nevada to assess the primary model components that contribute to this uncertainty and to postpone defining the contaminant boundary until additional model refinement is completed. Therefore, the role of this analysis has been to understand the behavior of radionuclide migration in the Pahute Mesa (PM) Corrective Action Unit (CAU) model and to define, both qualitatively and quantitatively, the sensitivity of such behavior to (flow) model conceptualization and (flow and transport) parameterization.

Greg Ruskauff

2009-02-01

108

A New High-Precision Paleomagnetic Reference Vector From Mesa El Burro, Mesa Cartabón, and Mesa El Pinole, Baja California for the Tuff of San Felipe, a Miocene Ignimbrite Marker Bed Exposed in Baja California and Sonora, México  

NASA Astrophysics Data System (ADS)

High precision paleomagnetic vectors from regional ignimbrite markers are valuable for quantifying distributed shear deformation in plate boundary zones. In central Baja California, we measured a new high- precision paleomagnetic reference vector for the 12.50 Ma Tuff of San Felipe (Tsf), a regionally-extensive Miocene ignimbrite deposit which blanketed >4000km2 of present day northeastern Baja California and western Sonora (Oskin and Stock, 2003) prior to the opening of the northern Gulf of California. This new reference location is west of both the main Gulf topographic escarpment and the San Pedro Martír fault that marks the western edge of the Gulf Extensional Province. Because this reference location has remained tectonically stable since the eruption and deposition of Tsf, the paleomagnetic vector measured here is a good estimate of the magnetic field at the time Tsf cooled below the Curie temperature. We selected three mesas capped by Tsf for paleomagnetic sampling: Mesa El Burro 1 km south of El Metate, Mesa Cartabón 9 km southwest of El Metate, and Mesa El Pinole 20 km northwest of El Metate. These mesas are capped by 10-30 m of the Tuff of San Felipe and are amongst the most western exposures of this ignimbrite documented in Baja California. In the area of these mesas, Tsf was deposited on a generally flat landscape with minor paleo-topography incised into 15-110 m of coarse sedimentary rocks. These strata nonconformably overlie a variety of plutonic and metamorphic basement rocks. Locally, Tsf infills westward- draining paleo-drainages carved into the still-horizontal underlying conglomerates. 50 randomly-oriented cores were drilled in Tsf at these three mesas and 48 of these cores together yield a mean direction of 212.4° declination, -3.0° inclination with an ?-95 confidence of 1.33°. This direction lies well off of the expected Miocene paleo-pole position and records an apparent geomagnetic excursion during reversed polarity subchron C5Ar.2r (Stock et al., 1999). This unique magnetic signature strengthens the utility of this ignimbrite as a regional tectonic marker. The declination measured at these mesas is ~6° counter-clockwise of the Mesa Cuadrada Tsf reference site in the Sierra San Felipe. This finding increases the amount of distributed dextral shear recorded by rotation of Tsf on the margins of the Gulf of California.

Bennett, S. E.; Oskin, M. E.

2008-12-01

109

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

ERIC Educational Resources Information Center

|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…

Ragan, Mark

110

Initial site characterization, environmental assessment, and corrective actions for underground storage tank 2315-U, Pine Ridge East Repeater Station, Oak Ridge Y-12 Plant, Oak Ridge, Tennessee  

Microsoft Academic Search

This document presents the Initial Site Characterization Report and information to date regarding environmental assessment and corrective actions for Underground Storage Tank (UST) 2315-U at the Pine Ridge East Repeater Station, Oak Ridge Y-12 Plant, Oak Ridge, Tennessee. This document was prepared following guidance in US Environmental Protection Agency (EPA) regulations promulgated under 40 CFR 280. The Pine Ridge East

J. M. Eaton; E. M. Ingram

1991-01-01

111

YUCCA MOUNTAIN SITE CHARACTERIZATION PROJECT EAST-WEST DRIFT SYSTEM SAFETY ANALYSIS  

SciTech Connect

The purpose of this analysis is to systematically identify and evaluate hazards related to the design of the Yucca Mountain Project Exploratory Studies Facility (ESF) East-West Cross Drift. This analysis builds upon prior ESF System Safety Analyses and incorporates TS Main Drift scenarios, where applicable, into the East-West Drift scenarios. This System Safety Analysis (SSA) focuses on the personnel safety and health hazards associated with the engineered design of the East-West Drift. The analysis also evaluates other aspects of the East-West Drift, including purchased equipment (e.g., scientific mapping platform) or Systems/Structures/Components (SSCs) and out-of-tolerance conditions. In addition to recommending design mitigation features, the analysis identifies the potential need for procedures, training, or Job Safety Analyses (JSAs). The inclusion of this information in the SSA is intended to assist the organization(s) (e.g., constructor, Safety and Health, design) responsible for these aspects of the East-West Drift in evaluating personnel hazards and augment the information developed by these organizations. The SSA is an integral part of the systems engineering process, whereby safety is considered during planning, design, testing, and construction. A largely qualitative approach is used which incorporates operating experiences and recommendations from vendors, the constructor and the operating contractor. The risk assessment in this analysis characterizes the scenarios associated with East-West Drift SSCs in terms of relative risk and includes recommendations for mitigating all identified hazards. The priority for recommending and implementing mitigation control features is: (1) Incorporate measures to reduce risks and hazards into SSC designs. (2) Add safety features and capabilities to existing designs. (3) Develop procedures and conduct training to increase worker awareness of potential hazards, reduce exposure to hazards, and inform personnel of the actions required to avoid accidents or correct hazardous conditions. This analysis does not consider temporary construction items and, therefore, does not consider hazards associated with temporary construction items. This analysis will be reviewed and updated to reflect new East-West Drift design changes, construction modifications, and ''as built'' documentation of the East-West Drift when completed. A major difference between this analysis and previous ESF SSAs is the inclusion of hazards that arise as a result of non-accident events, (e.g., ''off-normal'' operations, adverse environmental conditions, or ''out-of-tolerance'' conditions). Non-accident events, that were not included in previous ESF SSAs, include environmental and/or toxic hazards such as leaking gases/fluids, off-gassing reactions, and excessive dust, particulates, exhaust fumes, noise, temperature, etc. which could have an adverse health effect on personnel.

NA

1999-06-08

112

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

SciTech Connect

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.

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

2003-02-26

113

Digital geologic map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California  

Microsoft Academic Search

This digital geologic map of the Nevada Test Site (NTS) and vicinity, as well as its accompanying digital geophysical maps, are compiled at 1:100,000 scale. The map area covers two 30 Ã 60-minute quadrangles-the Pahute Mesa quadrangle to the north and the Beatty quadrangle to the south-plus a strip of 7 1\\/2-minute quadrangles on the east side. In addition to

J. L. Slate; M. E. Berry; P. D. Rowley; C. J. Fridrich; K. S. Morgan; J. B. Workman; O. D. Young; G. L. Dixon; V. S. Williams; E. H. McKee; D. A. Ponce; T. G. Hildenbrand; W. C. Swadley; S. C. Lundstrom; E. B. Ekren; R. G. Warren; J. C. Cole; R. J. Fleck; M. A. Lanphere; D. A. Sawyer; S. A. Minor; D. J. Grunwald; R. J. Laczniak; C. M. Menges; J. C. Yount; A. S. Jayko

2000-01-01

114

Geophysical survey at Talos Dome East Antarctica: the search for a deep new drilling site  

Microsoft Academic Search

Talos Dome is an ice dome on the edge of the East Antarctic plateau; it is adjacent to the Victoria Land mountains and overlies the eastern margin of the Wilkes Subglacial Basin. As part of the ITASE project, two traverse surveys were carried out in the Talos Dome area in November 1996 and January 2002. Airborne radar surveys were conducted

Massimo Frezzotti; Gabriele Bitelli; P. de Michelis; Alberto Deponti; Alessandro Forieri; Stefano Gandolfi; Valter Maggi; Francesco Mancini; F. Rémy; I. E. Tabacco; Stefano Urbini; Luca Vittuari; A. Zirizzotti

2004-01-01

115

The cranial analysis of eight skulls from collective grave of the Early Bronze Age Vucedol site (East Slavonia, Croatia).  

PubMed

The collective grave of the Vucedol culture signed as "grave 3/1985" with skeletons of eight persons, represents the most important burial of this culture on the eponimic site in East Croatia, with several indications of human sacrifice. Anthropological and radiological analysis were performed on crania remains of the individuals, specifically on the skulls of one male and seven females. Nondestructive methods embraced craniometrical analysis, analysis of cranial non-metric traits and multivariate distance analysis, with a help of radiological methods, to detect every distinct anatomical characteristic of the skulls. All methods used in this work tried to present similarities and a possible homogeneity of the analysed individuals. PMID:23697278

Hincak, Zdravka; Cavalli, Fabio; Durman, Aleksandar

2013-03-01

116

Holocene Sites North-East of Lake Turkana: A Preliminary Report  

Microsoft Academic Search

Mr Barthelme is engaged in research for a Ph.D. degree for the University of California at Berkeley. His work, of which this is a preliminary report, has been undertaken under the auspices of the Koobi Fora Research Project of the National Museums of Kenya.SummaryThe area to the north-east of Lake Turkana has proved to be extremely rich in archaeological material.

John Barthelme

1977-01-01

117

Continued investigations of the occurrence of water in Pahute Mesa emplacement holes  

Microsoft Academic Search

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

R. L. Hershey; T. H. Brikowski

1995-01-01

118

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

119

Archaeological investigations on the Buckboard Mesa Road Project  

SciTech Connect

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.

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

1991-10-01

120

Career Spanish at Mesa State College.  

ERIC Educational Resources Information Center

|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…

Pilkenton, David

121

In-Situ Air Permeability Measurements Using the Cone Permeameter at the 200 East Area of the Hanford Site  

SciTech Connect

This report documents the field demonstration of the Cone Permeameter{trademark} (CPer) conducted at the Immobilization Low-Activity Waste (ILAW) site in the 200 East area of the Department of Energy's (DOE) Hanford facility. The demonstration was conducted using the Hanford Site Cone Penetration Platform (CPP) shown in Figure 1.1. The purpose of the technology demonstration was to (1) gather baseline data and evaluate the CPer's ability to measure air permeability in arid sands, silts and gravels; and (2) to determine the system's ability to replicate permeability profiles with multiple pushes in close proximity. The demonstration was jointly conducted by Applied Research Associates, Inc. (ARA) and Science and Engineering Associates (SEA). This report satisfies the requirements of ARA's contract No.2075 to Lockheed Martin Hanford Company. The report is organized into six major sections. This first section presents an introduction and outline to the report. Section 2 contains a discussion of the technologies used for the demonstration. Section 3 contains a brief description of the site where the demonstration was conducted. Section 4 describes the testing methodology and chronology. Section 5 presents the results obtained during the field test program. Comparisons between these results and existing site data are developed and discussed in Section 5. A conclusion and recommendation section is presented in Section 6 of the report.

TROYER, G.L.

1999-03-31

122

Addendum to the East Tennessee Technology Park Site-Wide Residual Contamination Remedial Investigation Work Plan Oak Ridge, Tennessee  

SciTech Connect

The East Tennessee Technology Park Site-Wide Residual Contamination Remedial Investigation Work Plan (DOE 2004) describes the planned fieldwork to support the remedial investigation (RI) for residual contamination at the East Tennessee Technology Park (ETTP) not addressed in previous Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) decisions. This Addendum describes activities that will be conducted to gather additional information in Zone 1 of the ETTP for groundwater, surface water, and sediments. This Addendum has been developed from agreements reached in meetings held on June 23, 2010, August 25, 2010, October 13, 2010, November 13, 2010, December 1, 2010, and January 13, 2011, with representatives of the U. S. Department of Energy (DOE), U. S. Environmental Protection Agency (EPA), and Tennessee Department of Environment and Conservation (TDEC). Based on historical to recent groundwater data for ETTP and the previously completed Sitewide Remedial Investigation for the ETTP (DOE 2007a), the following six areas of concern have been identified that exhibit groundwater contamination downgradient of these areas above state of Tennessee and EPA drinking water maximum contaminant levels (MCLs): (1) K-720 Fly Ash Pile, (2) K-770 Scrap Yard, (3) Duct Island, (4) K-1085 Firehouse Burn/J.A. Jones Maintenance Area, (5) Contractor's Spoil Area (CSA), and (6) Former K-1070-A Burial Ground. The paper presents a brief summary of the history of the areas, the general conceptual models for the observed groundwater contamination, and the data gaps identified.

SAIC

2011-04-01

123

Aspects of the deterioration of sandstone masonry in Anasazi dwelling ruins at Mesa Verde National Park, Colorado, USA  

Microsoft Academic Search

Mesa Verde National Park, a World Heritage Site, encompasses a large concentration of Anasazi dwelling ruins in southwestern Colorado. These ruins, constructed of sandstone masonry, have been exposed for ca. 750 years to an environment which has been virtually isolated from human impacts. In the past 30 years, increasing public visitation of cultural sites in the area, construction and operation

William T. Petuskey; David A. Richardson; Donald A. Dolske

1995-01-01

124

Observational study of surface ozone at an urban site in East China  

Microsoft Academic Search

In this study, we present the observational data of near surface ozone and some meteorological parameters during 2004, at an urban site (36°42? N, 117°08? E, 34.5 m a.s.l.) of Jinan, China. Hourly ozone concentrations exceeding the standard value of China, 100 ppbv, were observed for 65 h (in 23 days) from April to October, and values exceeding US NAAQS (National Ambient Air Quality

Wenpo Shan; Yongquan Yin; Jianda Zhang; Yuping Ding

2008-01-01

125

Carbon sequestration potential in reclaimed mine sites in seven east-central states  

SciTech Connect

Terrestrial systems represent a significant potential carbon (C) sink to help mitigate or offset greenhouse gas emissions. Nearly 3.2 Mha are permitted for mining activities in the United States, which are required to be reclaimed with vegetative cover. While site-specific studies have assessed C accumulation on reclaimed mine sites, regional analyses to estimate potential C increases have not been conducted. For this analysis, potential C sequestration is analyzed on 567000 ha of mine land in a seven-state region reclaimed to cropland, pasture, or forest. Carbon accumulation is estimated for cropland, pasture, and forest soils, forest litter layer, and aboveground biomass by estimating average annual rates of C accumulation from site-specific and general C sequestration studies. The average annual rate of C storage is highest when mine land is reclaimed to forest, where the potential sequestration is 0.7 to 2.2 Tg yr{sup -1}. The C from soils, litter layer, and biomass from mine lands reclaimed to forest represents 0.3 to 1.0% of the 1990 CO{sub 2} emissions from the study region (919 Tg CO{sub 2}). To achieve the greenhouse gas (GHG) emission reduction goal of 7% below the 1990 level as proposed by the Kyoto Treaty requires CO{sub 2} emissions in the study area to be reduced by just over 64 Tg CO{sub 2}. The potential carbon storage in mine sites reclaimed to forest could account for 4 to 12.5% of these required reductions.

Sperow, M. [West Virginia University, Morgantown, WV (United States). Division of Resources Managment

2006-07-15

126

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

Microsoft Academic Search

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

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

1991-01-01

127

Premining evaluation of forage grass growth on mine soil materials from an east-central Texas lignite site: 1. Overburden strata  

Microsoft Academic Search

In a greenhouse, several warm-season forage grasses were grown on overburden materials from an unmined lignite site in east-central Texas. The objectives of the study were to evaluate the materials for plant response to nitrogen, phosphorus, and lime additions and to identify any physical or chemical soil factors that might be adverse to plant establishment. Soil materials used were composited

F. W. CHICHESTER

1981-01-01

128

Genesis and continuity of quaternary sand and gravel in glacigenic sediment at a proposed low-level radioactive waste disposal site in east-central Illinois  

Microsoft Academic Search

The Illinois Department of Nuclear Safety has characterized the Martinsville Alternative Site (MAS) for a proposed low-level radioactive waste disposal facility. The MAS is located in east-central Illinois approximately 1.6 km (1 mi) north of the city of Martinsville. Geologic investigation of the 5.5-km2 (1380-acre) site revealed a sequence of chiefly Illinoian glacigenic sediments from 6 to 60 m (20–200

Kathy Goetz Troost; B. Brandon Curry

1991-01-01

129

Correlation between meteorological conditions and aerosol characteristics at an East-Mediterranean coastal site  

NASA Astrophysics Data System (ADS)

Since May 2011 Microtops sun-photometer measurements aiming to determine the aerosol optical depth (AOD) and its spectral dependence (Ångström exponent, ?440/675) are performed routinely at the experimental station of the Port Said (Egypt) University (Lat.: 31.267°, Lon.: 32.26°, alt.: 21 masl). In parallel, an automated weather station is used to monitor the surface meteorological parameters (wind speed and direction, relative humidity, temperature, pressure…). This work uses the first year of original data (971 point measurements) with the double objective of determining the 1) seasonal variability of the aerosol at a site of the Egyptian Mediterranean coast, and 2) the potential correlation linking the aerosol characteristics to the surface meteorological conditions.

El-Metwally, Mossad; Alfaro, Stephane C.

2013-10-01

130

Argonne National Laboratory-East summary site environmental report for calendar year 2001.  

SciTech Connect

This report is a summary of the actions taken by Argonne National Laboratory in 2001 to keep the public and environment safe. Over the last year, Argonne has monitored, evaluated, and taken steps to control problems or potential problems on its DuPage County site. The problems that have or might occur are things like spilled or leaked radiological waste, non-radiological wastes or hazardous materials. Argonne is keeping its promise to be a good neighbor, and this report confirms its commitment to its neighbors, both human and environmental. Argonne's commitment to have minimal effect on the environment was tested vigorously over 2001. Argonne's first priority is keeping the people around it safe. This was verified through tests done on the air. The air can be the most damaging way to pollute an area. This is why Argonne was so extensive in its testing. They followed guidelines of the Clean Air Act, which covers radioactive emissions, asbestos, and conventional air pollutants. Air was tested, and after all calculations were finished, the effect on the public was found to be so minimal that it almost didn't register. The sources of pollutants from Argonne are exhausts from laboratories and other facilities, the steam plant that provides space heating for Argonne's buildings, and emissions from emergency generators when they are operating. The traces that were found were evaluated and reduced, even though they were originally well within regulatory limits. The same trends--further reduction of concentrations that were already safe--were found in the water analysis, as well. Water was sampled and evaluated many times over the course of the year, and what was found was good news. The radiological elements were very minimal, and most of the trace amounts were due to naturally occurring radiological sources. The only measurements that exceeded standards a few times were of total dissolved solids (TDS), essentially road salts dissolved in rainwater runoff. These problems were detected and then controlled. To put numbers to the situation, 1,600 measurements were taken over the last year, and out those measurements, only seven were outside the limits set by the Illinois Environmental Protection Agency. Argonne has another priority as well: keeping the environment around its site safe. The ecosystem surrounding Argonne, including Waterfall Glen Forest Preserve, is a valuable resource for our area. Argonne knows the value of this ecosystem and works in every way possible to keep it free of pollutants, both radiological and non-radiological. Many of the factors involved in keeping the public healthy also keep our forest and its inhabitants healthy. Argonne is not always told to keep environmental contaminants at a specific level, but the laboratory works at it anyway and often sets its own standards stricter than national and state standards. Argonne has a commitment, and that commitment leads the laboratory to be a better neighbor. Argonne is a valuable resource for the community, working to keep the public and the ecosystem safe and healthy.

Golchert, N. W.; Kolzow, R. G.

2003-02-20

131

Fiscal years 1993 and 1994 decontamination and decommissioning activities photobriefing book for the Argonne National Laboratory-East Site, Technology Development Division, Decontamination and Decommissioning Projects Department  

SciTech Connect

This photobriefing book describes the ongoing decontamination and decommissioning projects at the Argonne National Laboratory (ANL)-East Site near Lemont, Illinois. The book is broken down into three sections: introduction, project descriptions, and summary. The introduction elates the history and mission of the Decontamination and Decommissioning (D and D) Projects Department at ANL-East. The second section describes the active ANL-East D and D projects, giving a project history and detailing fiscal year (FY) 1993 and FY 1994 accomplishments and FY 1995 goals. The final section summarizes the goals of the D and D Projects Department and the current program status. The D/D projects include the Experimental Boiling Water Reactor, Chicago Pile-5 Reactor, that cells, and plutonium gloveboxes. 73 figs.

NONE

1995-12-31

132

How To Start a MESA Center at a Community College.  

ERIC Educational Resources Information Center

|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…

Claire, Susan

133

Pleistocene variability of the Subtropical Convergence at East Tasman Plateau: Evidence from planktonic foraminiferal Mg/Ca (ODP Site 1172A)  

NASA Astrophysics Data System (ADS)

Combined measurements of Mg/Ca and stable oxygen isotopes in tests of the planktonic foraminifer G. bulloides from Ocean Drilling Program (ODP) Site 1172A (East Tasman Plateau) allowed us to reconstruct sea surface temperature (SSTMg/Ca), sea surface salinity (SSS), and hence variations in the Subtropical Convergence (STC) in the southwestern Tasman Sea over the last four major glacial-interglacial changes. During interglacials the commonly enhanced SSTMg/Ca and SSS correspond to a lowered marine productivity and a lowered terrigenous flux, implying that the STC separating cool, high-nutrient Subantarctic Surface Water from warm, saline, oligotrophic Subtropical Surface Water and hence the band of zonal westerlies responsible for the eolian dust flux were located south of East Tasman Plateau. The warm East Australian Current was well established during warm periods and propagated far south. During glacial times, SSTMg/Ca and SSS were lower, while both marine productivity and eolian flux increased. Such conditions prevailed during glacial Marine Isotope Stages MIS 12, MIS 10, and to a lesser degree MIS 6 and implied the extended northward influence of Subantarctic Surface Water and a shift of the STC to <44°S. The overall climatic signal at Site 1172A appears to be largely attenuated when compared to published climate records from comparable latitudes to the west and to the east. SSTMg/Ca amplitudes were more pronounced in the subantarctic Indian Ocean and at Chatham Rise. They exhibit a consistent pattern suggesting that latitudinal shifts of the STC occurred synchronously in the subantarctic Indian Ocean and at Chatham Rise but were largely damped at East Tasman Plateau due to the influence of the East Australian Current.

Nürnberg, Dirk; Groeneveld, Jeroen

2006-04-01

134

TYBO\\/BENHAM: Model Analysis of Groundwater Flow ; and Radionuclide Migration from Underground Nuclear ; Tests in Southwestern Pahute Mesa, Nevada  

Microsoft Academic Search

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,

Andrew Wolfsberg; Lee Glascoe; Guoping Lu; Alyssa; Peter Lichtner; Maureen McGraw; Terry Cherry; Guy Roemer

2002-01-01

135

A Historical Evaluation of the U12t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 4 of 6  

SciTech Connect

This report presents a historical evaluation of the U12t Tunnel on the Nevada Test Site in southern Nevada. The work was conducted by the Desert Research Institute at the request of the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office and the U.S. Department of Defense, Defense Threat Reduction Agency (DTRA). The U12t Tunnel is one of a series of tunnels used for underground nuclear weapons effects tests on the east side of Rainier and Aqueduct Mesas. Six nuclear weapons effects tests, Mint Leaf, Diamond Sculls, Husky Pup, Midas Myth/Milagro, Mighty Oak, and Mission Ghost, and one high explosive test, SPLAT, were conducted within the U12t Tunnel from 1970 to 1987. All six of the nuclear weapons effects tests and the high explosive test were sponsored by DTRA. Two conventional weapons experiments, Dipole Knight and Divine Eagle, were conducted in the tunnel portal area in 1997 and 1998. These experiments were sponsored by the Defense Special Weapons Agency. The U12t Tunnel complex is composed of the Portal and Mesa Areas and includes an underground tunnel with a main access drift and nine primary drifts, a substantial tailings pile fronting the tunnel portal, a series of discharge ponds downslope of the tailings pile, and two instrumentation trailer parks and 16 drill holes on top of Aqueduct Mesa. A total of 89 cultural features were recorded: 54 at the portal and 35 on the mesa. In the Portal Area, cultural features are mostly concrete pads and building foundations; other features include the portal, rail lines, the camel back, ventilation and cooling system components, communication equipment, and electrical equipment. On the mesa are drill holes, a few concrete pads, a loading ramp, and electrical equipment.

Harold Drollinger; Robert C. Jones; and Thomas F. Bullard; Desert Research Institute, Laurence J. Ashbaugh, Southern Nevada Courier Service and Wayne R. Griffin, Stoller-Navarro Joint Venture

2009-02-01

136

A Historical Evaluation of the U12t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 3 of 6  

SciTech Connect

This report presents a historical evaluation of the U12t Tunnel on the Nevada Test Site in southern Nevada. The work was conducted by the Desert Research Institute at the request of the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office and the U.S. Department of Defense, Defense Threat Reduction Agency (DTRA). The U12t Tunnel is one of a series of tunnels used for underground nuclear weapons effects tests on the east side of Rainier and Aqueduct Mesas. Six nuclear weapons effects tests, Mint Leaf, Diamond Sculls, Husky Pup, Midas Myth/Milagro, Mighty Oak, and Mission Ghost, and one high explosive test, SPLAT, were conducted within the U12t Tunnel from 1970 to 1987. All six of the nuclear weapons effects tests and the high explosive test were sponsored by DTRA. Two conventional weapons experiments, Dipole Knight and Divine Eagle, were conducted in the tunnel portal area in 1997 and 1998. These experiments were sponsored by the Defense Special Weapons Agency. The U12t Tunnel complex is composed of the Portal and Mesa Areas and includes an underground tunnel with a main access drift and nine primary drifts, a substantial tailings pile fronting the tunnel portal, a series of discharge ponds downslope of the tailings pile, and two instrumentation trailer parks and 16 drill holes on top of Aqueduct Mesa. A total of 89 cultural features were recorded: 54 at the portal and 35 on the mesa. In the Portal Area, cultural features are mostly concrete pads and building foundations; other features include the portal, rail lines, the camel back, ventilation and cooling system components, communication equipment, and electrical equipment. On the mesa are drill holes, a few concrete pads, a loading ramp, and electrical equipment.

Harold Drollinger; Robert C. Jones; and Thomas F. Bullard; Desert Research Institute, Laurence J. Ashbaugh, Southern Nevada Courier Service and Wayne R. Griffin, Stoller-Navarro Joint Venture

2009-02-01

137

A Historical Evaluation of the U12t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 5 of 6  

SciTech Connect

This report presents a historical evaluation of the U12t Tunnel on the Nevada Test Site in southern Nevada. The work was conducted by the Desert Research Institute at the request of the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office and the U.S. Department of Defense, Defense Threat Reduction Agency (DTRA). The U12t Tunnel is one of a series of tunnels used for underground nuclear weapons effects tests on the east side of Rainier and Aqueduct Mesas. Six nuclear weapons effects tests, Mint Leaf, Diamond Sculls, Husky Pup, Midas Myth/Milagro, Mighty Oak, and Mission Ghost, and one high explosive test, SPLAT, were conducted within the U12t Tunnel from 1970 to 1987. All six of the nuclear weapons effects tests and the high explosive test were sponsored by DTRA. Two conventional weapons experiments, Dipole Knight and Divine Eagle, were conducted in the tunnel portal area in 1997 and 1998. These experiments were sponsored by the Defense Special Weapons Agency. The U12t Tunnel complex is composed of the Portal and Mesa Areas and includes an underground tunnel with a main access drift and nine primary drifts, a substantial tailings pile fronting the tunnel portal, a series of discharge ponds downslope of the tailings pile, and two instrumentation trailer parks and 16 drill holes on top of Aqueduct Mesa. A total of 89 cultural features were recorded: 54 at the portal and 35 on the mesa. In the Portal Area, cultural features are mostly concrete pads and building foundations; other features include the portal, rail lines, the camel back, ventilation and cooling system components, communication equipment, and electrical equipment. On the mesa are drill holes, a few concrete pads, a loading ramp, and electrical equipment.

Harold Drollinger; Robert C. Jones; and Thomas F. Bullard; Desert Research Institute, Laurence J. Ashbaugh, Southern Nevada Courier Service and Wayne R. Griffin, Stoller-Navarro Joint Venture

2009-02-01

138

A Historical Evaluation of the U12t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 6 of 6  

SciTech Connect

This report presents a historical evaluation of the U12t Tunnel on the Nevada Test Site in southern Nevada. The work was conducted by the Desert Research Institute at the request of the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office and the U.S. Department of Defense, Defense Threat Reduction Agency (DTRA). The U12t Tunnel is one of a series of tunnels used for underground nuclear weapons effects tests on the east side of Rainier and Aqueduct Mesas. Six nuclear weapons effects tests, Mint Leaf, Diamond Sculls, Husky Pup, Midas Myth/Milagro, Mighty Oak, and Mission Ghost, and one high explosive test, SPLAT, were conducted within the U12t Tunnel from 1970 to 1987. All six of the nuclear weapons effects tests and the high explosive test were sponsored by DTRA. Two conventional weapons experiments, Dipole Knight and Divine Eagle, were conducted in the tunnel portal area in 1997 and 1998. These experiments were sponsored by the Defense Special Weapons Agency. The U12t Tunnel complex is composed of the Portal and Mesa Areas and includes an underground tunnel with a main access drift and nine primary drifts, a substantial tailings pile fronting the tunnel portal, a series of discharge ponds downslope of the tailings pile, and two instrumentation trailer parks and 16 drill holes on top of Aqueduct Mesa. A total of 89 cultural features were recorded: 54 at the portal and 35 on the mesa. In the Portal Area, cultural features are mostly concrete pads and building foundations; other features include the portal, rail lines, the camel back, ventilation and cooling system components, communication equipment, and electrical equipment. On the mesa are drill holes, a few concrete pads, a loading ramp, and electrical equipment.

Harold Drollinger; Robert C. Jones; and Thomas F. Bullard; Desert Research Institute, Laurence J. Ashbaugh, Southern Nevada Courier Service and Wayne R. Griffin, Stoller-Navarro Joint Venture

2009-02-01

139

A Historical Evaluation of the U12t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 1 of 6  

SciTech Connect

This report presents a historical evaluation of the U12t Tunnel on the Nevada Test Site in southern Nevada. The work was conducted by the Desert Research Institute at the request of the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office and the U.S. Department of Defense, Defense Threat Reduction Agency (DTRA). The U12t Tunnel is one of a series of tunnels used for underground nuclear weapons effects tests on the east side of Rainier and Aqueduct Mesas. Six nuclear weapons effects tests, Mint Leaf, Diamond Sculls, Husky Pup, Midas Myth/Milagro, Mighty Oak, and Mission Ghost, and one high explosive test, SPLAT, were conducted within the U12t Tunnel from 1970 to 1987. All six of the nuclear weapons effects tests and the high explosive test were sponsored by DTRA. Two conventional weapons experiments, Dipole Knight and Divine Eagle, were conducted in the tunnel portal area in 1997 and 1998. These experiments were sponsored by the Defense Special Weapons Agency. The U12t Tunnel complex is composed of the Portal and Mesa Areas and includes an underground tunnel with a main access drift and nine primary drifts, a substantial tailings pile fronting the tunnel portal, a series of discharge ponds downslope of the tailings pile, and two instrumentation trailer parks and 16 drill holes on top of Aqueduct Mesa. A total of 89 cultural features were recorded: 54 at the portal and 35 on the mesa. In the Portal Area, cultural features are mostly concrete pads and building foundations; other features include the portal, rail lines, the camel back, ventilation and cooling system components, communication equipment, and electrical equipment. On the mesa are drill holes, a few concrete pads, a loading ramp, and electrical equipment.

Harold Drollinger; Robert C. Jones; and Thomas F. Bullard; Desert Research Institute, Laurence J. Ashbaugh, Southern Nevada Courier Service and Wayne R. Griffin, Stoller-Navarro Joint Venture

2009-02-01

140

A Historical Evaluation of the U12t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 2 of 6  

SciTech Connect

This report presents a historical evaluation of the U12t Tunnel on the Nevada Test Site in southern Nevada. The work was conducted by the Desert Research Institute at the request of the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office and the U.S. Department of Defense, Defense Threat Reduction Agency (DTRA). The U12t Tunnel is one of a series of tunnels used for underground nuclear weapons effects tests on the east side of Rainier and Aqueduct Mesas. Six nuclear weapons effects tests, Mint Leaf, Diamond Sculls, Husky Pup, Midas Myth/Milagro, Mighty Oak, and Mission Ghost, and one high explosive test, SPLAT, were conducted within the U12t Tunnel from 1970 to 1987. All six of the nuclear weapons effects tests and the high explosive test were sponsored by DTRA. Two conventional weapons experiments, Dipole Knight and Divine Eagle, were conducted in the tunnel portal area in 1997 and 1998. These experiments were sponsored by the Defense Special Weapons Agency. The U12t Tunnel complex is composed of the Portal and Mesa Areas and includes an underground tunnel with a main access drift and nine primary drifts, a substantial tailings pile fronting the tunnel portal, a series of discharge ponds downslope of the tailings pile, and two instrumentation trailer parks and 16 drill holes on top of Aqueduct Mesa. A total of 89 cultural features were recorded: 54 at the portal and 35 on the mesa. In the Portal Area, cultural features are mostly concrete pads and building foundations; other features include the portal, rail lines, the camel back, ventilation and cooling system components, communication equipment, and electrical equipment. On the mesa are drill holes, a few concrete pads, a loading ramp, and electrical equipment.

Harold Drollinger; Robert C. Jones; and Thomas F. Bullard; Desert Research Institute, Laurence J. Ashbaugh, Southern Nevada Courier Service and Wayne R. Griffin, Stoller-Navarro Joint Venture

2009-02-01

141

Premining evaluation of forage grass growth on mine soil materials from an east-central Texas lignite site: 2. soil profile horizons  

Microsoft Academic Search

Several warm-season forage grasses and a cool-season pasture mix of oats plus clover were grown in a greenhouse on mixtures of soil profile horizon materials from an unmined lignite site in east-central Texas and then evaluated as to the suitability of the various soil materials for selective placement over regraded lignite mine spoil during land reclamation. Mixtures of the clayey

F. W. CHICHESTER

1983-01-01

142

CHARACTERIZATION OF MERCURY CONTAMINATION AT THE EAST FORK POPLAR CREEK SITE, OAK RIDGE, TENNESSEE: A CASE STUDY  

EPA Science Inventory

Historic accidental release of mercury-contaminated material associated with nuclear weapons production at East Fork Poplar Creek (EFPC) resulted in stream and floodplain contamination. he EFPC is designated as an Oak Ridge Reservation (ORR) operable unit under the Comprehensive ...

143

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

SciTech Connect

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.

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

1991-01-01

144

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

SciTech Connect

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.

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

1997-02-01

145

Completion Report for Well ER-12-4, Corrective Action Unit 99: Rainier Mesa - Shoshone Mountain (includes Errata Sheet)  

SciTech Connect

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.

U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office; Bechtel Nevada

2006-05-01

146

Downhole variation of lithium and oxygen isotopic compositions of oceanic crust at East Pacific Rise, ODP Site 1256  

NASA Astrophysics Data System (ADS)

Bulk rock lithium and oxygen isotope compositions from ODP Site 1256 were analyzed to investigate the seawater circulation in the upper oceanic crust formed at the East Pacific Rise (EPR). The upper extrusive basalts have ?18O values from +6.1‰ to +9.2‰, reflecting alteration of oceanic crust by seawater at low temperatures (<200-250°C). Bulk rocks from the sheeted dike complex and plutonic section have overall lower ?18O values (+3.0‰-+5.5‰). In the sheeted dike complex bulk rock ?18O values gradually decrease with depth, and then increase toward the fresh MORB ?18O value after reaching a minimum of +3.0‰ at ˜1350 m below seafloor (mbsf). The entire sampled crust is dominated by rocks with low lithium contents relative to fresh MORBs except for a few localized Li enrichment. The upper volcanic zone is characterized by a spread of ?7Li from low to high values relative to average unaltered MORB values (?7Li = +3.4 ± 1.4‰). The presence of rocks with low ?7Li values in the upper crust most likely indicates zones of upwelling of relatively hot (˜200-250°C) hydrothermal fluids. In the sheeted dike complex, bulk rock ?7Li values show wide range of variation, but exhibit a general trend from enriched to depleted values at ˜1280 mbsf and then return to that for fresh MORB within the upper tens of meters of the plutonic section at the bottom of the after reaching a minimum at ˜1350 mbsf (?7Li = -1.6‰). The downhole pattern of ?7Li principally reflects variations in water-rock ratio (w/r) together with a downhole increase of temperature. Seawater flow in the upper volcanic zone is likely to be channeled with generally small but variable w/r ratios. The w/r ratios increase rapidly with depth in the lower volcanic section into the sheeted dike complex indicating water dominated pervasive hydrothermal flow due to intensive upwelling of hydrothermal fluids.

Gao, Y.; Vils, F.; Cooper, K. M.; Banerjee, N.; Harris, M.; Hoefs, J.; Teagle, D. A. H.; Casey, J. F.; Elliott, T.; Laverne, C.; Alt, J. C.; Muehlenbachs, K.

2012-10-01

147

Affordable Housing Demonstration: A Case Study, Mesa County, Colorado.  

National Technical Information Service (NTIS)

This case study describes a cooperative venture between a forward-looking municipality and a builder to produce affordable housing for singles and joint ownership by unrelated persons in Mesa County, Colo. The Coventry Club project was developed and built...

1984-01-01

148

Coop Creek Bridge with Checkerboard Mesa in background, historic photograph, ...  

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

Co-op Creek Bridge with Checkerboard Mesa in background, historic photograph, no date, Zion National Park collection - Zion-Mount Carmel Highway, Co-op Creek Bridge, Spanning Co-op Creek, Springdale, Washington County, UT

149

Nanostructured microsize YBCO mesas for applications as field sensors  

Microsoft Academic Search

High-energy heavy-ion beams collimated by means of laser cut stainless-steel masks create microsize mesas surrounded by virgin regions into strip-shaped YBCO films. The ions induce columnar nanostructures whose density is tailored to generate locally weaker superconductivity. FESEM and AFM analyses show evidence of interface boundary regions with upward steps of about 20nm. The mesas exhibit magneto-resistive performances, functional to localize

E. Mezzetti; A. Chiodoni; R. Gerbaldo; G. Ghigo; L. Gozzelino; F. Laviano; B. Minetti; A. Amato; A. Rovelli; R. Cherubini

2008-01-01

150

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

SciTech Connect

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.

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

1988-03-01

151

First investigations of IO, BrO, and NO2 summer atmospheric levels at a coastal East Antarctic site using mode-locked cavity enhanced absorption spectroscopy  

NASA Astrophysics Data System (ADS)

IO, BrO, and NO2 were measured for the first time at Dumont d'Urville (East Antarctic coast) during summer 2011/2012 by using a near-UV-Visible laser spectrometer based on mode-locked cavity-enhanced absorption spectroscopy. IO mixing ratios ranged from the 2? detection limit (0.04 pptv) up to 0.15 pptv. BrO remained close or below the detection limit (2 pptv) of the instrument. Daily averaged NO2 values ranged between the detection limit (10 pptv) and 60 pptv being far higher than levels of a few pptv commonly observed in the remote marine boundary layer. Data are discussed and compared with those available for another coastal Antarctic station (Halley, West Antarctica). It is shown that the oxidative capacity of the atmospheric boundary layer at coastal Antarctic sites is quite different in nature from West to East Antarctica, with the halogen chemistry being promoted at West and the OH chemistry at East.

Grilli, Roberto; Legrand, Michel; Kukui, Alexandre; MéJean, Guillaume; Preunkert, Suzanne; Romanini, Daniele

2013-02-01

152

MESA: Mercator scheduler and archive system  

NASA Astrophysics Data System (ADS)

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).

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

2012-09-01

153

Particle Formation and Growth in North and East China: a Comparative Analysis of Measurements from Surface and Mountaintop Sites  

Microsoft Academic Search

Particle formation and growth is a key process that determines the size distribution of aerosols in the atmosphere. In this report we present the measurement result of number and size distribution of aerosol particles (10-10000nm in diameter) obtained in spring and summer of 2005-2007 in North and East China which experience serious regional air pollution problems. The measurements were conducted

J. Gao; T. Wang; W. X. Wang; S. Poon; P. J. Xu; L. K. Xue; X. F. Wang; W. Nie; Z. Wang; W. S. Wu; F. H. Chai; X. Z. Wang; A. Ding

2009-01-01

154

A computationally efficient Multicomponent Equilibrium Solver for Aerosols (MESA)  

NASA Astrophysics Data System (ADS)

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.

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

2005-12-01

155

A Computationally Efficient Multicomponent Equilibrium Solver for Aerosols (MESA)  

SciTech Connect

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 deliquescence points as well as mass growth factors for the sulfate-rich systems. The MESA-MTEM configuration required only 5 to 10 single-level iterations to obtain the equilibrium solution for ~44% of the 328 multiphase problems solved in the 16 test cases at RH values ranging between 20% and 90%, while ~85% of the problems solved required less than 20 iterations. Based on the accuracy and computational efficiency considerations, the MESA-MTEM configuration is attractive for use in 3-D aerosol/air quality models.

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

2005-12-23

156

The Use of Levoglucosan and Radiocarbon for Source Apportionment of PM2.5 Carbonaceous Aerosols at a Background Site in East China.  

PubMed

Samples of fine particulate matter (PM2.5) were collected during July 2009 to March 2010 at a regional background site in East China. The mass concentrations of organic carbon (OC) and elemental carbon (EC) were characterized by the highest levels in winter (December to February) and the lowest abundances in summer (June to August). Conversely, the concentrations of levoglucosan were higher in summer than in winter. The observations were associated to the anthropogenic air pollutions (predominantly fossil-fuel combustions) transport from the center and north China with the northwest winds in winter and large contribution of the open biomass burning activities in South China and East China in summer, which was evident by air-mass trajectories and MODIS satellite fire counts. To assign fossil and nonfossil contributions of carbonaceous matters, the radiocarbon contents in water-insoluble OC (WINSOC) and EC in 4 combined samples representing four seasons were analyzed using the isolation system established in China. The results indicated that biomass burning and biogenic sources (59%) were the major contribution to the WINSOC, whereas fossil fuel (78%) was the dominant contributor to the refractory EC at this site. The source variation obtained by radiocarbon was consistent with other indicators, such as the OC/EC ratios and the levoglucosan concentration. Biomass burning and biogenic emissions were found to predominate in the summer and autumn, whereas fossil fuel emissions predominate in winter and spring. PMID:23957240

Liu, Di; Li, Jun; Zhang, Yanlin; Xu, Yue; Liu, Xiang; Ding, Ping; Shen, Chengde; Chen, Yingjun; Tian, Chongguo; Zhang, Gan

2013-09-04

157

Arias intensity assessment of liquefaction test sites on the east side of San Francisco Bay affected by the Loma Prieta, California, earthquake of 17 October 1989  

USGS Publications Warehouse

Abstract. Uncompacted artificial-fill deposits on the east side of San Francisco Bay suffered severe levels of soil liquefaction during the Loma Prieta earthquake of 17 October 1989. Damaged areas included maritime-port facilities, office buildings, and shoreline transportation arteries, ranging from 65 to 85 km from the north end of the Loma Prieta rupture zone. Typical of all these sites, which represent occurrences of liquefaction-induced damage farthest from the rupture zone, are low cone penetration test and Standard Penetration Test resistances in zones of cohesionless silty and sandy hydraulic fill, and underlying soft cohesive Holocene and Pleistocene sediment that strongly amplified ground motions. Postearthquake investigations at five study sites using standard penetration tests and cone penetration tests provide a basis for evaluation of the Arias intensity-based methodology for assessment of liquefaction susceptibility. ?? 1997 Kluwer Academic Publishers.

Kayen, R. E.

1997-01-01

158

National Wind Technology Center Site Environmental Assessment: Bird and Bat Use and Fatalities -- Final Report; Period of Performance: April 23, 2001 -- December 31, 2002  

SciTech Connect

This study was conducted to ascertain actual and potential impacts of wind turbines on populations of birds and bats at the National Wind Technology Center (NWTC) in northern Jefferson County, Colorado. The NWTC, which is part of the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), is located on a mesa dominated by ungrazed grassland with isolated patches of ponderosa pine. Similar lands to the north and west are part of the city of Boulders open space system. Areas to the east and south are part of the Rocky Flats Environmental Technology Site.

Schmidt, E.; Piaggio, A. J.; Bock, C. E.; Armstrong, D. M.

2003-01-01

159

Public Health Assessment for Petitioned Public Health Assessment, Hansen Containers, Grand Junction, Mesa County, Colorado, Region 8. CERCLIS No. COD081469801.  

National Technical Information Service (NTIS)

The Hansen Container Company Site (also known as the Layton Brothers Drum Company and the Rocky Mountain Drum Company) was an 11-acre drum recycling facility on the southern edge of the Grand Junction city limits, Mesa County, Colorado. In March 1991, two...

1997-01-01

160

Modeling edge effects of mesa diodes for silicon photovoltaics  

NASA Astrophysics Data System (ADS)

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 transition, the space charge region can extend approximately 100 microns into a 199.5 micron thick mesa diode, and have a bulk recombination rate that is two orders of magnitude greater than the rest of the device at low forward biases.

Appel, Jesse S.

161

Polygenetic development of the Mormon Mesa, NV petrocalcic horizons: Geomorphic and paleoenvironmental interpretations  

Microsoft Academic Search

Mormon Mesa, Nevada, USA is of one of Earth's rare and unique landforms. Regionally, Mormon Mesa is important because of its relationship to the lower Colorado River and its connection to stream incision. Petrocalcic horizons at Mormon Mesa developed from multiple exposure, erosion, and sedimentation events driven by variations in paleoclimate since the early Pliocene. This study utilizes pedogenic features

Amy L. Brock; Brenda J. Buck

2009-01-01

162

Genesis and continuity of quaternary sand and gravel in glacigenic sediment at a proposed low-level radioactive waste disposal site in east-central Illinois  

USGS Publications Warehouse

The Illinois Department of Nuclear Safety has characterized the Martinsville Alternative Site (MAS) for a proposed low-level radioactive waste disposal facility. The MAS is located in east-central Illinois approximately 1.6 km (1 mi) north of the city of Martinsville. Geologic investigation of the 5.5-km2 (1380-acre) site revealed a sequence of chiefly Illinoian glacigenic sediments from 6 to 60 m (20-200 ft) thick overlying two major bedrock valleys carved in Pennsylvanian strata. Relatively permeable buried units include basal, preglacial alluvium; a complex of intraglacial and subglacial sediment; englacial deposits; and supraglacial fluvial deposits. Postglacial alluvium underlies stream valleys on and adjacent to the site. In most areas, the buried sand units are confined by low-permeability till, lacustrine sediment, colluvium, and loess. The distribution and thickness of the most extensive and continuous buried sand units have been modified considerably by subglacial erosion, and their distributions have been influenced by the buried bedrock valleys. The most continuous of the various sand units were deposited as preglacial and postglacial alluvium and are the uppermost and lowermost stratigraphic units at the alternative site. Sand units that were deposited in englacial or ice-marginal environments are less continuous. Aquifer pumping tests, potentiometric head data, and groundwater geochemistry analyses indicate minimal interaction of groundwater across localized interconnections of the permeable units. ?? 1991 Springer-Verlag New York Inc.

Troost, K. G.; Curry, B. B.

1991-01-01

163

The Middle East Cancer Consortium  

Cancer.gov

Skip Navigation This site is hosted by the National Cancer Institute, National Institutes of Health in Bethesda, MD, USA. Contact Information Disclaimers Welcome to the Middle East Cancer Consortium (MECC) Web Site. Workshop on the Stresses of Working

164

Two-dimensional velocity models for paths from Pahute Mesa and Yucca Flat to Yucca Mountain; Yucca Mountain Project  

SciTech Connect

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.

Walck, M.C.; Phillips, J.S.

1990-11-01

165

Experience with processes and monitors in Mesa (Summary)  

Microsoft Academic Search

In early 1977 we began to design the concurrent programming facilities of Pilot, a new operating system for a personal computer [5]. Pilot is a fairly large program itself (25,000 lines of Mesa code). In addition, it supports some large applications, ranging from data base management to internetwork message transmission, which are heavy users of concurrency (our experience with some

Butler W. Lampson; David D. Redell

1979-01-01

166

First Mesa Hopi in 1900: A Demographic Reconstruction  

Microsoft Academic Search

Detailed information for unacculturated Native American societies is very rare. The existence of maps, unpublished field notes from the 1890s and the manuscript U.S. census of 1900 makes it possible to examine the Hopi Indians of First Mesa, Arizona in 1900 in ways that are seldom possible. The location of individuals within each village, the size of the home and

Elliot G. McIntire

1982-01-01

167

Comparison of mosquito control programs in seven urban sites in Africa, the Middle East, and the Americas  

PubMed Central

Mosquito control programs at seven urban sites in Kenya, Egypt, Israel, Costa Rica, and Trinidad are described and compared. Site-specific urban and disease characteristics, organizational diagrams, and strengths, weaknesses, obstacles and threats (SWOT) analysis tools are used to provide a descriptive assessment of each mosquito control program, and provide a comparison of the factors affecting mosquito abatement. The information for SWOT analysis is collected from surveys, focus group discussions, and personal communication. SWOT analysis identified various issues affecting the efficiency and sustainability of mosquito control operations. The main outcome of our work was the description and comparison of mosquito control operations within the context of each study site’s biological, social, political, management, and economic conditions. The issues identified in this study ranged from lack of inter-sector collaboration to operational issues of mosquito control efforts. A lack of sustainable funding for mosquito control was a common problem for most sites. Many unique problems were also identified, which included lack of mosquito surveillance, lack of law enforcement, and negative consequences of human behavior. Identifying common virtues and shortcomings of mosquito control operations is useful in identifying “best practices” for mosquito control operations, thus leading to better control of mosquito biting and mosquito-borne disease transmission.

Impoinvil, Daniel E.; Ahmad, Sajjad; Troyo, Adriana; Keating, Joseph; Githeko, Andrew K.; Mbogo, Charles M; Kibe, Lydiah; Githure, John I.; Gad, Adel M.; Hassan, Ali N.; Orshan, Laor; Warburg, Alon; Calderon-Arguedas, Olger; Sanchez-Loria, Victoria M.; Velit-Suarez, Rosanna; Chadee, Dave D.; Novak, Robert J.; Beier, John C.

2007-01-01

168

Environmental status of algal mat sites located at the east coast of Saudi Arabia following the Gulf War  

SciTech Connect

Remote sensing techniques and ground truth verification were used to provide information on algal mat locations and damage intensity caused by the oil spill. Pre and post oil spill satellite images, ground truth assessment were compared for damage evaluation. Locations and sites status (heavily oiled, recovering, and no algal mats) were conveyed in maps. Recovered sites are found in Abu Ali and Tanajib areas. However, recovery seems to be slower in Abu Ali area as compared to Tanajib. Different types and formations of algal mats were found in both areas. This differentiation is more likely to be attributable to coastal topography and tide regimes.

Al-Thukair, A. (King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia))

1993-06-01

169

11. AUTHIGENIC SILICA IN TERTIARY AND UPPER CRETACEOUS SEDIMENTS OF THE EAST MARIANA BASIN, DEEP SEA DRILLING PROJECT SITE 5851  

Microsoft Academic Search

Siliceous sediments and sedimentary rocks occur as chert and silicified chalk, limestone, and claystone in Site 585 lower Miocene to Campanian sediments, with one older occurrence of chert near the Cenomanian\\/Turonian boundary. The recovered drill breccia in the Miocene to middle Eocene interval is dominated by bright red, orange, yellow, and brown chips and fragments of chert. In early Eocene

Miriam Baltuck

170

Gravimetric response of water table fluctuations in the Sahelian Diffa site (East Niger): local effects including poro-elasticity  

Microsoft Academic Search

The GHYRAF project (Gravimetry and HYdrology in AFrica) is devoted to a regional study of the relationship between hydrological and gravimetric signals in the Western African Monsoon area. Three sites are monitored in a decreasing pluviometric gradient: Djougou (North Benin), Wankama (Niamey area) and Bagara (Eastern Niger) with annual rainfalls amounting to 1200 mm, 600 mm and 350 mm, respectively.

B. Hector; P. Genthon; M. Le Coz; J. Hinderer; K. Chalikakis; M. Descloitres

2010-01-01

171

The palynology of ODP site 1165, Prydz Bay, East Antarctica: A record of Miocene glacial advance and retreat  

Microsoft Academic Search

ODP Site 1165 recovered around 1000 m of Early to Late Miocene mixed hemi-pelagic sediments from the Wild Drift, offshore Prydz Bay. Samples from between the bottom of the hole and 110 m below sea floor yielded distinctive palynomorph assemblages, ranging in age from 22.2 Ma at the base to 8 Ma at 110 mbsf. Many assemblages contain large numbers

Michael J. Hannah

2006-01-01

172

Sustainable site productivity and nutrient management in a short rotation plantation of Gmelina arborea in East Kalimantan, Indonesia  

Microsoft Academic Search

Sustainable Forest Management (SFM) requires information on plant growth and nutrient dynamics in forest ecosystems. To obtain fundamental information for SFM in short-rotation plantations in tropical regions, a serial study was conducted on: (i) land use changes and effects on soil chemical properties in tropical forestland, (ii) site index and nutrient dynamics in Gmelina arborea Roxb. (yemane), (iii) stand age

Cahyono Agus; Oka Karyanto; Satoshi Kita; Kikuo Haibara; Hiroto Toda; Suryo Hardiwinoto; Haryono Supriyo; Mohamad Na'iem; Wahyu Wardana; Maurit S. Sipayung; Khomsatun; Suhartono Wijoyo

2004-01-01

173

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

SciTech Connect

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.

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

2001-12-01

174

East Timor  

NSDL National Science Digital Library

This Week's In the News examines the escalation of violence and the proposal for autonomy in the Indonesian province of East Timor. Last weekend, anti-independence militiamen killed dozens of separatist activists in Dili, the East Timorese capital, intensifying the fierce bloodshed and political tumult in the province. The recent massacre is just one of several brutal episodes that have plagued East Timor in the past quarter-century. The people of the embattled island have suffered numerous human rights violations, have endured economic collapse, and have been decimated by guerrilla warfare, famine, and disease. Over 200,000 East Timorese -- or nearly one-fourth of the population -- have died in the troubles, which began in 1975 when Portugal abruptly abandoned East Timor after 400 years of colonial rule. Unstable and vulnerable, the newly independent East Timor was quickly invaded, occupied, and annexed in 1976 by Indonesia, a stronger nation that quashed all subsequent separatist movements. Last January, after years of political oppression, Indonesia's parliament finally succumbed to international pressure and announced that it would grant East Timor either full independence or autonomy within the Indonesian state. The United Nations, although it has never officially recognized Indonesia's sovereignty over East Timor, plans to supervise a vote, tentatively scheduled for July, wherein the East Timorese will determine whether they want full independence or provincial autonomy. Later this week, Foreign Ministers Ali Alatas of Indonesia and Jaime Gama of Portugal are meeting in New York with UN Secretary-General Kofi Annan to discuss the East Timorese autonomy option and plan for the pending UN-monitored poll. However, the recent resurgence of violence between anti- and pro-independence factions in and around Dili threatens the viability of the proposed poll and endangers the stability of East Timor's self-determination. The nine resources discussed offer background information, the latest news, political analysis, and social commentary.

Osmond, Andrew.

1999-01-01

175

2. VIEW OF EAST TAILING DAM (FOREGROUND), LOOKING EAST SOUTHEAST ...  

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

2. VIEW OF EAST TAILING DAM (FOREGROUND), LOOKING EAST SOUTHEAST UP WASH TOWARD ORE BIN, OVERBURDEN, ADITS, AND ROAD SHOWN IN CA-290-1. MILL SITE IS UP AND TO THE RIGHT OF THIS VIEW. STANDARD FIFTY-GALLON DRUM IN FOREGROUND GIVES SCALE OF WALL. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

176

Gravimetric response of water table fluctuations in the Sahelian Diffa site (East Niger): local effects including poro-elasticity  

NASA Astrophysics Data System (ADS)

The GHYRAF project (Gravimetry and HYdrology in AFrica) is devoted to a regional study of the relationship between hydrological and gravimetric signals in the Western African Monsoon area. Three sites are monitored in a decreasing pluviometric gradient: Djougou (North Benin), Wankama (Niamey area) and Bagara (Eastern Niger) with annual rainfalls amounting to 1200 mm, 600 mm and 350 mm, respectively. The Diffa/Bagara site is located 640m away from the Yobé temporary river, a tributary of Lake Chad fed by rainfall on the Jos Plateau (Nigeria) and that is generally flowing between mid July and January. Apart from this period, the river bed includes a series of ponds that form the top of the aquifer and that are pumped for intensive irrigated cropping. The 50m thick uppermost unconfined aquifer is locally recharged by the Yobé River and is flowing northwards. It has been explored by geophysical methods involving RMS and TDEM soundings, which provided information on its porosity and electrical conductivity, respectively. A series of nearly 50 holes drilled down to a 10 m depth in the Bagara area allowed to define the detailed sedimentary structure of the aquifer. It consists mainly of fluvial deposits with alternating layers of fine sands, coarse grained sands and clays. The sedimentary pile includes clayed layer of centimetric to metric thickness with a mean lateral extension of 300 m. The groundwater level is monitored by a series of 4 piezometers located at 25 m, 270 m, 500 m and 640 m from the river axis. The shape of the piezometric curve at the Bagara station is 0.4 m amplitude sinusoid and presents a maximum level at mid January and a minimum one near mid July. Clearly, water level fluctuations are governed by infiltration from the Yobe river with an offset controlled by the distance to it. With the 20% porosity measured by MRS, this would imply a nearly 30 nms-2 gravimetric signal, which is in fair agreement with the observed amplitude. However both the observed gravimetic signal and the results of the global hydrological model GLDAS are offset with respect to the piezometric one. In order to assess the influence of local effects, the groundwater level is modeled with the USGS finite-difference ModFlow code using different properties sets of the aquifer deduced from statistical analysis of drill-holes data. Poroelasticity effects resulting from variable saturation of the clay layers observed near the water level on the Bagara site are assessed. The ability of gravity data for monitoring annual and long term water level changes in the uppermost aquifer is then discussed.

Hector, B.; Genthon, P.; Le Coz, M.; Hinderer, J.; Chalikakis, K.; Descloitres, M.

2010-12-01

177

Question of East Timor  

NSDL National Science Digital Library

This new site from the United Nations offers a large collection of primary documents related to the history and future of East Timor. A June 11, 1999 Security Council Resolution (1246) established the United Nations Mission in East Timor (UNAMET), which is charged with organizing and conducting a "popular consultation" (scheduled for August 8) to determine the territory's future status. At the site, users can read the full text of the agreement between Indonesia and Portugal that set the groundwork for this consultation, as well as the official UN documents concerning East Timor (reports, resolutions, discussions), press briefings and releases (1996-99). Fifteen audio reports from UN Radio are also provided, although several were unavailable at time of writing.

178

Analysis of the electrically forced vibrations of piezoelectric mesa resonators  

NASA Astrophysics Data System (ADS)

We study the electrically forced thickness-shear and thickness-twist vibrations of stepped thickness piezoelectric plate mesa resonators made of polarized ceramics or 6-mm class crystals. A theoretical analysis based on the theory of piezoelectricity is performed, and an analytical solution is obtained using the trigonometric series. The electrical admittance, resonant frequencies, and mode shapes are calculated, and strong energy trapping of the modes is observed. Their dependence on the geometric parameters of the resonator is also examined.

He, Hui-Jing; Nie, Guo-Quan; Liu, Jin-Xi; Yang, Jia-Shi

2013-08-01

179

A computationally efficient Multicomponent Equilibrium Solver for Aerosols (MESA)  

Microsoft Academic Search

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

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

2005-01-01

180

MESA: A 3-D computer code for armor\\/anti-armor applications  

Microsoft Academic Search

We describe a new 3-D computer code, named MESA, developed at the Los Alamos National Laboratory with DARPA\\/Army\\/Marine Corps support specifically for simulations of armor and anti-armor systems. MESA is a three-dimensional, cartesian, Eulerian code with hydrodynamics, high explosives, and material strength models. Among special features of MESA are its high-order advection algorithm, its material interface tracking scheme and the

D. A. Manell; T. F. Adams; K. S. Holian; F. L. Addessio; J. R. Baumgardner; S. J. Mosso

1989-01-01

181

Enhanced light output in nitride-based light-emitting diodes by roughening the mesa sidewall  

Microsoft Academic Search

In this letter, we will report on a nitride-based light emitting diode with a mesa sidewall roughening process that increases light output power. The fabricated GaN-based light-emitting diode (LED) wafers were first treated through a photoelectrochemical (PEC) process. The Ga2O3 layers then formed around the GaN : Si n-type mesa sidewalls and the bottoms mesa etching regions. Selective wet oxidation

Chia-Feng Lin; Zhong-Jie Yang; Jing-Hui Zheng; Jing-Jie Dai

2005-01-01

182

Structural and petrophysical characterization of the upper basement crustal section at ODP/IODP Site 1256 (East Pacific Ocean)  

NASA Astrophysics Data System (ADS)

New ocean crust is constantly being formed from mid-ocean ridge axis. Voluminous flows of lava are emplaced also away from the ridge axis, adding off-axis crustal layers to the crustal pile. Research on deep sea is of great importance to better understand the mechanisms and the nature of the crust forming and evolution. In this work, we decipher the first stages of the postmagmatic evolution of an intact volcanic section from the upper oceanic crust at ocean drilling program/integrated ocean drilling program (ODP/IODP) Site 1256 (Eastern Pacific Ocean). Using for the first time an innovative core-log integration technique to match direct (core-related) and indirect (borehole-related) data by depth shifting and reorienting individual core pieces recovered by drilling, we are able to identify the clusterization of structures and physical properties within distinct downdeep "strong" and "weak" lava zones, reflecting the cooling and tectonic evolution of lavas rather than lithological variations. We define the evolution of the structural zones that typically affect lava flows: colonnades and entablature zones, studying an off-axis lava flow encountered in present-day upper ocean crust. For the same off-axis flow, we are also able to suggest the lava flow direction (NW-SE) and its relationships with the paleoridge axis. Despite the environmental difficulties in the study of the subseafloor under deep water and using only one-dimensional data deriving from ocean drilling, this work shows how an array of diverse data can be integrated into a coherent interpretation of lava flow history obtaining detailed information on the mechanism of submarine lava emplacement and flow.

Fontana, Emanuele; Tartarotti, Paola

2013-07-01

183

Shrinking and swelling clays under droughts: measurements at the Mormoiron test-site and first analyses (Vaucluse, South-East of France)  

NASA Astrophysics Data System (ADS)

In France, exceptional periods of rainfall deficit (1976, 1989 to 1991 and 1996 to 1997) have caused damages to houses due to their vulnerability to shrinking and swelling clays phenomenon. Between 1998 and 2010, BRGM has been producing a national hazard map related to shrinking and swelling clays, built by crossing geological data and information on density of damages for each geological formation (methodology developed since 1995). The intense drought of summer 2003 has pointed out the necessity of a better understanding of this phenomenon. At the request of the French Ministry of Environment, BRGM has developed a new method for measuring the moisture evolution with depth in order to study its impact on the swelling capacity of clayed soil. The site of Mormoiron (Vaucluse, South-East of France) has then been instrumented for that purpose, with moisture sensors (since December 2004) and extensometers (since March 2009) at different depths. These data have been used to test and improve existing empirical models which are supposed to assess settlements and swellings, depending on the soil water content. Compilations of different measurements have shown, after basic processing made on the data (filtering, resampling, etc.), evident correlations between rain and surface displacements. The model finally obtained gives quite good dependence between these two quantities for the uppermost soil layers (0.2m and 0.5m). More research are being undertaken to physically explain this relationship, particularly for deeper layers. These results should lead to propose a calibrated model for predicting soil deformations from climatic data.

Gourdier, Sébastien; Vandromme, Rosalie; Grandjean, Gilles

2013-04-01

184

Revised Livermore seismic hazard estimates for sixty-nine nuclear power plant sites east of the Rocky Mountains. Final report, July 1993--March 1994  

SciTech Connect

The draft version of this report presented updated Lawrence Livermore National Laboratory (LLNL) probabilistic seismic hazard analysis estimates for 69 nuclear power plant sites in the region of the United States east of the Rocky Mountains. LLNL performed a re-elicitation of seismicity and ground motion experts to improve their estimates of uncertainty in seismicity parameters and ground motion models. Using these revised inputs, LLNL updated the seismic hazard estimates documented in NUREG/CR-5250 (1989). These updated hazard estimates will be used in future NRC actions. The draft was issued for public comment in October 1993. By the end of the public comment period, February 28, 1994, comments had been received from two nuclear industry companies. The comments from these companies neither contested nor suggested amendments to the technical data conveyed in the report. Rather, they both suggest changes in the Individual Plant External Event Examination (IPEEE) program scope. This report is not the forum for discussion of the IPEEE program. Possible modification to the scope of the IPEEE will be examined in its own setting. Therefore, there are no technical differences between the draft report and this final report. Any information as to modifications to the IPEEE program will be provided to the public via an NRC general communication.

Sobel, P.

1994-04-01

185

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

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 Mesa consists of alluvial-fan deposits that overlie shale and, locally, sandstone. Maps of the base of the aquifer, the water table, and the saturated thickness of the aquifer were prepared from data from the well files of the Colorado Division of Water Resources. The base of the aquifer generally is topographically higher than the valleys of the North Fork Gunnison River and Leroux Creek, and direct hydraulic connection of the aquifer to North Fork Gunnison River and Leroux Creek is limited. The aquifer is recharged primarily by infiltration of surface water diverted for irrigation. Ground water discharges to seeps and springs and through slope deposits at the boundaries of the aquifer. Data from the well files also were used to estimate the specific capacity of wells and to estimate the transmissivity and hydraulic conductivity of the aquifer. A water budget was used to estimate recharge to and discharge from the aquifer. Although storage within the aquifer likely varies seasonally and from year to year, it was assumed that there were no long-term changes in ground-water storage. Estimated average annual recharge to and discharge from the aquifer during November 1998 through October 2006 were about 30,767 acre-feet per year. Although sufficient ground water is available on Rogers Mesa for additional domestic water supplies, conversion of irrigated land to residential land use likely would reduce recharge to the aquifer, affecting the sustainability of ground-water supplies on Rogers Mesa. Stream-depletion analyses indicate that the ground water in the aquifer likely would be considered tributary ground water and additional uses of ground water to supply new subdivisions likely would require implementation of augmentation plans. Although sufficient ground water is available on Rogers Mesa for additional domestic water supplies, conversion of irrigated land to residential land use likely would reduce recharge to the aquifer, affecting the sustainability

Watts, Kenneth R.

2008-01-01

186

Atmospheric trace metal inputs in the Misten bog (East Belgium): Special attention to sampling techniques and site-spatial variability.  

NASA Astrophysics Data System (ADS)

Peat bogs have a great potential to record anthropogenic inputs via their constituting mosses, because they draw their nutrients only from the atmosphere. These atmospheric inputs can be studied thanks to geochemical characteristics such as trace metal concentrations. Coupling lead isotopes to elemental geochemistry allows one to decipher between natural (erosion of rocks) and anthropogenic (pollution due to industrial development, vehicles...) inputs. The purpose of our work was to study the pollution history of trace metals in the region of Misten (Belgium) at a local and a regional level, and to place modern industrial pollution in this region in a wider historical perspective. Four peat cores (01W, 04W, 05W and 06W) were collected in 2008 in the Misten bog (Hautes-Fagnes plateau, E-Belgium) and studied for their trace metal and lead isotopic signatures. Analyses were accompanied by coupled 210Pb-14C age models in order to estimate the mercury and lead accumulation rates in each core and compare them to other European records. The Hg record was compared to the various anthropogenic sources as determined by Pb isotopes. The Hg concentration profiles resemble those of Pb, an element known to be immobile in peatlands. The correlation between these two metals suggests a predominant anthropogenic source of Hg (and Pb). In the W06 core, low and stable Hg accumulation rates (0.9-3.1 ?g m-2 yr-1) are found in the lower layers (503-1823AD). High Hg accumulation rates are found in the surface and sub-surface layers (post-1823AD) and peak at 123.3 ?g m-2 yr-1 (1969AD). In 01W, the lead enrichment factor (Pb E.F.) coupled with the continuous drop in 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb isotopic ratios since 539 AD until 1973AD indicates the growing importance of the non-radiogenic Pb released from anthropogenic activities. The highest concentrations of Pb (613-662 µg g-1) have been found near the surface of the bog dated between 1902 and 1954AD. The Pb E.F. also significantly increased during the Industrial Revolution, and subsequently decreased due to the phasing out of leaded gasoline. Main results for Pb in 01W and Hg in 06W will be compared with the 2 other cores and previously published results collected in 2007 at another location in the same peatland. Differences in concentrations and chronology will be discussed in terms of (1) differences in the topography of the bog, (2) differences in the surface vegetation of the bog, which could have led to differential trapping and retention of lead, for example, and different retention of vegetation during sampling at the sites where the corers were inserted, (3) different effects induced by the operating mechanism of the corers, (4) operator-induced effects, e.g. leading to loss of surface material before or during coring.

Allan, Mohammed; Fagel, Nathalie; de Vleeschouwer, François; Mattielli, Nadine; Piotrowska, Natalia; Sikorski, Jarek; Sonke, Jeroen E.; Le Roux, Gaël.

2010-05-01

187

Development of soil physical parameters on initial landforms - An example from a post-mining recultivation site in Lusatia, East Germany  

NASA Astrophysics Data System (ADS)

Recultivation efforts in mining areas attempt to regenerate soils and landscapes for various land use options and create initial conditions which are beneficial for the development of the future ecosystems. On very young landforms physical and chemical properties of soils play a major role for the further evolution of the developing ecosystem as well as the landforms itself. Less is known about the very first alterations of physical parameters in accordance to different land uses and recultivation practices. Our study deals with the agricultural recultivation of post lignite mining areas in Lusatia, East Germany. The sandy substrate used for recultivation stems from depths of several meters and is therefore free of recent soil organic matter. The substrate itself is unstructured. After it has been excavated and transported on conveyor belts to the recultivation site, it is piled up to dams of a height of 1-4 m and levelled off with heavy crawlers. During these processes the substrate is subjected to strong mechanical stresses. This practice induces compaction which causes decreasing yields of agricultural crops to a certain extent. In this context we are investigating the effect of different organic soil additives in combination with different recultivation crop rotations on the development of soil structure for improved agricultural land use. Our experimental site has recently been heaped up and levelled off. On the 25 experimental sub areas 2175 undisturbed soil samples were taken out of three soil depths to characterize initial physical properties before any recultivation measures have been applied,. We present laboratory results of this status-quo sampling. The results indicate that the site is very heterogeneous in terms of mechanical stability, bulk density, total pore volume, saturated hydraulic conductivity and air permeability. Moreover, our results show that bulk density is not an appropriate parameter to derive soil functions, e.g. permeability or stability. Additionally we found that even in areas of bulk densities > 1.8 g/cm3 and with an inclination < 2 % impressive run-off and gully erosion developed during heavy rainfall events. We conclude that initial processes altering soil physical parameters play a major role for the landform evolution within the first 12 months after dumping. Further studies should reveal the mid-term impact of organic additives on the soils after 7 yrs.

Kruemmelbein, J.; Raab, T. A.; Bens, O.; Hüttl, R. F.

2009-12-01

188

The Pleistocene evolution of the East Antarctic Ice Sheet in the Prydz bay region: Stable isotopic evidence from ODP Site 1167  

USGS Publications Warehouse

Ocean Drilling Program Leg 188, Prydz Bay, East Antarctica is part of a larger initiative to explore the Cenozoic history of the Antarctic Ice Sheet through direct drilling and sampling of the continental margins. In this paper, we present stable isotopic results from Ocean Drilling Program (ODP) Site 1167 located on the Prydz Channel Trough Mouth Fan (TMF), the first Antarctic TMF to be drilled. The foraminifer-based ??18O record is interpreted along with sedimentary and downhole logging evidence to reconstruct the Quaternary glacial history of Prydz Bay and the adjacent Lambert Glacier Amery Ice Shelf System (LGAISS). We report an electron spin resonance age date of 36. 9 ?? 3.3 ka at 0.45 m below sea floor and correlate suspected glacial-interglacial cycles with the global isotopic stratigraphy to improve the chronology for Site 1167. The ??18O record based on planktonic (Neogloboquadrina pachyderma (s.)) and limited benthic results (Globocassidulina crassa), indicates a trend of ice sheet expansion that was interrupted by a period of reduced ice volume and possibly warmer conditions during the early-mid-Pleistocene (0.9-1.38 Ma). An increase in ?? 18O values after ??? 900 ka appears to coincide with the mid-Pleistocene climate transition and the expansion of the northern hemisphere ice sheet. The ??18O record in the upper 50 m of the stratigraphic section indicates as few as three glacial-interglacial cycles, tentatively assigned as marine isotopic stages (MIS) 16-21, are preserved since the Brunhes/Matuyama paleomagnetic reversal (780 ka). This suggests that there is a large unconformity near the top of the section and/or that there may have been few extreme advances of the ice sheet since the mid-Pleistocene climate transition resulting in lowered sedimentation rates on the Prydz Channel TMF. The stable isotopic record from Site 1167 is one of the few available from the area south of the Antarctic Polar Front that has been linked with the global isotopic stratigraphy. Our results suggest the potential for the recovery of useful stable isotopic records in other TMFs. ?? 2003 Elsevier B.V. All rights reserved.

Theissen, K. M.; Dunbar, R. B.; Cooper, A. K.; Mucciarone, D. A.; Hoffmann, D.

2003-01-01

189

Water-Quality Characteristics of Urban Storm Runoff at Selected Sites in East Baton Rouge Parish, Lousiana, Frebruary 1998 Through April 2002  

USGS Publications Warehouse

Water was sampled at four watersheds for continued evaluation of urban storm runoff in East Baton Rouge Parish, Louisiana, during February 1998 through April 2002. Eighteen samples were collected from four watersheds representing land uses characterized predominantly as established commercial, industrial, new commercial, and residential. Results of water-quality analyses enabled calculation of event-mean concentrations and estimated annual contaminant loads and yields of storm runoff from nonpoint sources for 12 water-quality properties and constituents. The following water-quality data are reported: physical and chemical-related properties, fecal coliform and enterococci bacteria, major inorganic ions, nutrients, trace elements, and organic compounds. The residential land-use is the largest of the watersheds (550 acres), which resulted in high estimated annual contaminant loads compared to other watersheds for 8 of the 12 water-quality properties and constituents. This may indicate that the size of the watershed and runoff from residences with their associated contaminants had substantial effects on annual loads within this land use. The industrial land-use area had the highest estimated annual contaminant loads for metals, followed by the residential landuse area. However, when comparing yields among the watersheds, the industrial watershed had the highest yield for 9 of the 12 water-quality properties and constituents, whereas the residential watershed had the lowest yield for 7 of the 12. The industrial watershed yielded more metals per acre per year than any other watershed. Zinc yields were 2.71 pounds per acre per year from the industrial watershed, compared to 0.35 pounds per acre per year from the residential watershed, which was the lowest of all the watersheds. Lead concentrations exceeded the U.S. Environmental Protection Agency Maximum Contaminant Level of 15 micrograms per liter for drinking water standards in 10 of 18 samples. Low-level concentrations of mercury were detected twice at both the new commercial and residential sites, with all concentrations at or just above reporting limits. The average dissolved phosphorus concentrations from each land use were two to four times higher than the U.S. Environmental Protection Agency criterion of 0.05 milligrams per liter. Diazinon, which is widely used as a general-purpose insecticide for lawns and gardens, was detected in all 18 samples. The maximum diazinon concentration detected, 2.7 micrograms per liter, was from the residential site. Malathion, another insecticide used on lawns, gardens, and plants, was also detected at least once from each site, but all concentrations were below the minimum detection limit of 0.1 micrograms per liter.

Frederick, C. Paul

2003-01-01

190

The Middle East Institute  

NSDL National Science Digital Library

Dedicated to "keeping the public objectively informed about the Middle East," the Middle East Institute provides a number of resources to this end. Visitors to the site can access the table of contents, abstracts, and some complete articles from The Middle East Journal; read online policy briefs about current events in the region; review descriptions of the Institute's published monographs; and consult an online searchable catalog of over 2,400 scholarly works in Middle Eastern studies published in the 1990s. The XML-based catalog can be searched by keyword, title, author, or any of the cataloged fields. Two online texts are also posted here: An Introduction to Islam (see the September 3, 1999 Scout Report) and, in the rare books section of the library, Mehemet the Kurd and Other Tales by Charles Wells (requires multidoc pro to view TEI (SGML)).

2001-01-01

191

Far East  

SciTech Connect

Petroleum activity throughout the Far East region was on the upswing during 1980. In spite of increased interest in many parts of the Far East, no major new discoveries were reported. From India to Indonesia, old fields are being rehabilitated and previously uneconomic areas are being looked at again. Indonesia set a new record in 1980 for the number of exploratory wells drilled. Peninsular Malaysia set a record for oil production. Overall, however, 1980 was a banner year for petroleum exploration in the Far East. Sri Lanka saw its first foreign contractor interest in several years. India made major moves toward increasing exploration by offering offshore and onshore blocks to foreign contractors . Bangladesh and even Burma signed exploitation contracts with Japanese investors in order to increase production. Malaysia offered new acreage blocks for the first time in several years. Indonesia and the Philippines also actively encouraged exploration by offering new contract areas. One country in the Far East that did not participate in the 1980 oil boom was China. Taiwan also carried on, as in previous years with the Chinese Petroleum Corporation as the only operator. Japanese and South Korean activities were at approximately the same level as in previous years, although drilling did start in the joint development zone. Total production of the Far East reporting region declined slightly. One significant aspect of 1980 petroleum activities throughout the Far East region is the growing acceptance by various Far East countries of Asian investment for developing and exploring for hydrocarbons. Japan is the major investor, but South Korean interests and the Chinese Petroleum Corporation also began to invest in petroleum rights in other Asian countries. The main area for investment continued to be Indonesia. 39 figures, 9 tables.

Fletcher, G.L.

1981-10-01

192

Case History Report on East Mesa and Cerro Prieto Geothermal Fields.  

National Technical Information Service (NTIS)

Well log analysis as applied to the geothermal industry is one of the areas of technology in great need of further development. One means of improving log analysis technology is to study case histories of the past uses of log analysis as applied to specif...

DG. Davis S. K. Sanyal

1979-01-01

193

Simulated heat-exchanger tubes: DOE Geothermal Test Facility, East Mesa, California  

Microsoft Academic Search

A 103 hr corrosion test was performed of two geothermal heat exchanger materials, Allegheny-Ludlum Alloy 29-4 and Alloy 29-4C. Coupons of the two metals were exposed under conditions simulating flow in a geothermal heat exchanger tube. Continuous flow and cyclic exposure tests were made. No signs of localized corrosion were observed in either the base metal, tube weld seam, or

P. F. Ellis II; D. M. Anliker

1982-01-01

194

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

Federal Register 2010, 2011, 2012, 2013

...Regulatory Commission [Docket No. ER13-1346-000] Mesa Wind Power Corporation; Supplemental Notice That Initial Market-Based...supplemental notice in the above-referenced proceeding of Mesa Wind Power Corporation's application for market-based rate...

2013-05-08

195

TYBO/BENHAM: Model Analysis of Groundwater Flow and Radionuclide Migration from Underground Nuclear Tests in Southwestern Pahute Mesa, Nevada  

SciTech Connect

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.

Andrew Wolfsberg; Lee Glascoe; Guoping Lu; Alyssa Olson; Peter Lichtner; Maureen McGraw; Terry Cherry; Guy Roemer

2002-09-01

196

Particle Formation and Growth in North and East China: a Comparative Analysis of Measurements from Surface and Mountain-top Sites  

NASA Astrophysics Data System (ADS)

Particle formation and growth is a key process that determines the size distribution of aerosols in the atmosphere. In this report we present the measurement result of number and size distribution of aerosol particles (10-10000nm in diameter) obtained in spring and summer of 2005-2007 in North and East China which experience serious regional air pollution problems. The measurements were conducted at an urban area (Ji’nan, Shandong), a rural area in Beijing, and the summit of Mount Tai (1534 m a.s.l.) in Shandong. The previously reported data collected in a suburban area near Shanghai was also used. The data are examined in terms of the frequency of particle formation, the growth characteristics, and an estimate of the contribution of sulfuric acid vapor to particle growth in highly polluted atmospheres. Despite the large condensational sinks due to the presence of pre-existing particles, intensive formation and growth of particles were frequently (20%-65% of time) observed at the suburban and rural areas, both in surface and the mountain-top sites. The much higher frequency (65%) at Mt Tai suggests that the particle formation and growth is a regional phenomenon occurring not only in the surface but also throughout the planetary boundary layer in eastern China. The observed particle growth rates varied from 3.1 nm/h at the mountain top to 4.5-6.0 nm/h near Beijing and Shanghai. The source rates of condensable vapors were estimated at 0.91+E6 cm-1 s-1 in Mt Tai, 1.80+E6 cm-1 s-1 in Beijing, and 3.08+E6 cm-1 s-1 in Shanghai. The condensation of sulphuric acid vapor contributed about 45% of the particle growth in Shanghai and at Mt Tai, and about 25% in Beijing. These values are higher than those from previous researches at similar latitudes.

Gao, J.; Wang, T.; Wang, W. X.; Poon, S.; Xu, P. J.; Xue, L. K.; Wang, X. F.; Nie, W.; Wang, Z.; Wu, W. S.; Chai, F. H.; Wang, X. Z.; Ding, A.

2009-12-01

197

Preshot Geological and Engineering Conditions at the Project Flivver Site Nevada Test Site.  

National Technical Information Service (NTIS)

The site of the Flivver experiment is in basalt on the central ridge of Buckboard Mesa, Nevada Test Site. A soil layer averaging 2 feet thick covers the site. The basalt, which is about 237 feet thick at the Flivver site, can be divided into three units: ...

D. M. Bailey L. D. Carter R. W. Hunt

1967-01-01

198

The Implementation of Career Education through the Mesa Center for Career Development.  

ERIC Educational Resources Information Center

Efforts of the Center for Career Development (Mesa, Arizona) to compare various strategies for promoting available career education materials and services in the Mesa Public Schools (to determine which strategies are more effective in increasing utilization of career education resources) are described. After identifying the career education…

Booth, George, Comp.

199

Polarization Bistable Characteristics of Mesa Structure 980 nm Vertical-Cavity Surface-Emitting Lasers  

Microsoft Academic Search

The polarization bistable characteristics of 980 nm vertical-cavity surface-emitting lasers (VCSELs) with a mesa structure were experimentally studied. To achieve this, a distributed Bragg reflector mirror was processed into a rectangular mesa structure waveguide using inductively coupled plasma reactive ion etching and was buried with a polyimide layer. The VCSELs oscillated with single frequency and the lowest order transverse mode

Yuuki Sato; Takashi Mori; Yasuhiro Yamayoshi; Hitoshi Kawaguchi

2006-01-01

200

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

ERIC Educational Resources Information Center

|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…

Preston, Christine

2010-01-01

201

Groundwater chemistry at the Nevada Test Site: Data and preliminary interpretations  

SciTech Connect

The interpretation of chemical analyses of groundwater collected at and near the Nevada Test Site (NTS) has been vital in developing conceptual models of groundwater flow in the area. These conceptual models are tested using recent chemical data generated by the Desert Research Institute, as well as historic analyses from the US Geological Survey. A total of 81 wells are represented by analyses from 1957 to 1990, with generally excellent agreement between repeat samples from the same location. As identified by previous workers, three hydrochemical facies are represented by the samples: Ca-Mg-HCO{sub 3} water in carbonate rocks or alluvium derived from carbonates, Na-K-HCO{sub 3} water in volcanic rocks and alluvium derived from volcanic rocks, and a mixed fades found in many carbonate and alluvium water samples, and some volcanic waters. There is a general lack of lateral continuity in chemical characteristics along presumed flowpaths within each hydrologic unit (alluvium, carbonate, and volcanic). Though a lack of continuity between basins on the east side of the NTS was expected for water in alluvial and volcanic units due to the absence of interbasin flow, chemical differences observed within individual basins suggest a dominance of vertical over lateral flow. Groundwater in volcanic materials on the east side of Yucca and Frenchman Flats and on the west side of Pahute Mesa and Yucca Mountain has a nearly pure Na-K-HCO{sub 3} signature that reflects contact with primarily volcanic material. Groundwater in volcanic units in the middle of the NTS and on the east side of Pahute Mesa contains a higher proportion of Ca, Mg, Cl, and SO{sub 4} than the other volcanic waters and indicates the contribution of water from the upper carbonate aquifer and/or hydrothermally altered regions.

Chapman, J.B.; Lyles, B.F.

1993-03-01

202

Volcanic eruption and emplacement during the 2005-06 magmatic event at the East Pacific Rise R2K Integrated Study Site (Invited)  

NASA Astrophysics Data System (ADS)

The 2005-06 eruption of the East Pacific Rise (EPR) marks the first observed repeat volcanic eruption along the global mid-ocean ridge system. Intense study of the EPR ridge crest within the Ridge2000 integrated study site (8°-11° N) since the early 1990s has provided a uniquely well-characterized catalog of seafloor geology, crustal structure, hydrothermal circulation and discharge, magma distribution, and faunal abundance that can be used to critically examine the processes that controlled or were impacted by eruption dynamics and volcanic accretion during the most recent eruptive event. A variety of high-resolution, post-eruption data sets (near-bottom multibeam bathymetry, sidescan sonar backscatter, seafloor photography, seafloor magnetics) were used to fully characterize the extent, volume, and morphology of the erupted products. These data provide insight into the kinematics of the eruption including variations in magma supply to as many as five distinct eruptive vents along the ridge axis and the mechanisms controlling lava emplacement across the ridge crest. Correlative data sets including micro-seismicity, lava geochemistry, and radiometric eruption ages allow us to interpret the mapped lava flows as a time sequence of distinct units and relate the erupted products to potential along-axis variations within the underlying magmatic system. Within individual flow units, we utilize flow morphology and geochemical indicators (e.g., CO2 degassing) to examine rates of flow advance and eruption. In addition, we utilize spatially correlated pre-eruption data sets to examine how the seafloor has been modified by the 2005-06 eruption. We find only minor changes to the structure (width and depth) of the axial summit trough despite it being filled and overtopped by lava along much of the ~18 km length of the eruption. This suggests that fast-spreading ridge eruptions may disrupt active faunal communities, but maintain a nearly identical habitat for re-colonization. This detailed view of lava eruption and emplacement during the 2005-06 event and our evaluation of its duration and magnitude relative to past eruptions provides a context in which to interpret perturbations to the interconnected ridge-crest processes including precursory signals (e.g., microseismicity, vent fluid chemistry) that heralded an eruption and post-eruption changes (e.g., faunal communities, sites of fluid discharge) in the wake of the event.

Soule, S.; Rubin, K. H.; Fornari, D. J.; Perfit, M. R.; Ferrini, V.; White, S. M.; Shank, T. M.; Fundis, A. T.; Nakata, D.; Tivey, M.; Goss, A. R.

2009-12-01

203

Subsurface structure of a submarine hydrothermal system in ocean crust formed at the East Pacific Rise, ODP/IODP Site 1256  

NASA Astrophysics Data System (ADS)

ODP/IODP Hole 1256D penetrates an in situ section of ocean crust formed at the East Pacific Rise, through lavas and sheeted dikes and ˜100 m into plutonic rocks. We use mineralogy, oxygen isotopes, and fluid inclusions to understand hydrothermal processes. The lavas are slightly altered at low temperatures (<150°C) to phyllosilicates and iron oxyhydroxides, with a stepwise increase in grade downward to greenschist minerals in the upper dikes. This resulted from generally upwelling hydrothermal fluids in the dikes mixing with cooler seawater solutions in the lavas, also producing minor metal sulfide mineralization in the upper dikes. Alteration grade increases downward in the dikes, with increasing recrystallization to amphibole and loss of metals at higher temperatures (>350°C up to ˜600°C). Intrusion of gabbro bodies into the lower dikes resulted in contact metamorphism to granoblastic hornfels at 850°C-900°C, representing a thermal boundary layer between the axial melt lens and the overlying hydrothermal system. Downward penetration of hydrothermal fluids led to rehydration of granoblastic dikes and plutonic rocks at ˜800°C down to <300°C. Fluid inclusion and oxygen isotope data show that vein quartz formed at ˜300°C to >450°C from hydrothermal fluids that were affected by supercritical phase separation. Fluids had variable salinities and were enriched in 18O (+0.4‰ to +3.5‰) relative to seawater, similar to seafloor vent fluids. Dike margins are brecciated and mineralized, suggesting hydrothermal activity coeval with magmatism. Anhydrite formed mainly in the upper dikes when partly reacted seawater fluids were heated as they penetrated deeper into the system. Low-temperature alteration of the volcanic section continued as cold seawater penetrated along fluid pathways, forming minor iron oxyhydroxides in the rocks. Hydrothermal processes at Site 1256 fit with current models whereby greenschist alteration of dikes at low water/rock ratios is overprinted by fracture-controlled alteration and mineralization by upwelling hydrothermal fluids, a conductive boundary layer above gabbroic intrusions, leaching of metals from dikes and gabbros in the deep "root zone," and stepped thermal and alteration gradients in the basement. The Site 1256 section, however, is intact and retains recharge effects (anhydrite), allowing an integrated view of processes in the subsurface.

Alt, Jeffrey C.; Laverne, Christine; Coggon, Rosalind M.; Teagle, Damon A. H.; Banerjee, Neil R.; Morgan, Sally; Smith-Duque, Christopher E.; Harris, Michelle; Galli, Laura

2010-10-01

204

77 FR 40354 - Mesa de Los Carros Hydro, LLC; Notice of Preliminary Permit Application Accepted for Filing and...  

Federal Register 2010, 2011, 2012, 2013

...Commission [Project No. 13316-001] Mesa de Los Carros Hydro, LLC; Notice of Preliminary...Applications On April 3, 2012, Mesa De Los Carros Hydro, LLC filed an application...to study the feasibility of the Mesa De Los Carros Pumped Storage Project to be...

2012-07-09

205

Modules for Experiments in Stellar Astrophysics (MESA): Planets, Oscillations, Rotation, and Massive Stars  

NASA Astrophysics Data System (ADS)

We substantially update the capabilities of the open source software package Modules for Experiments in Stellar Astrophysics (MESA), and its one-dimensional stellar evolution module, MESA star. Improvements in MESA star's ability to model the evolution of giant planets now extends its applicability down to masses as low as one-tenth that of Jupiter. The dramatic improvement in asteroseismology enabled by the space-based Kepler and CoRoT missions motivates our full coupling of the ADIPLS adiabatic pulsation code with MESA star. This also motivates a numerical recasting of the Ledoux criterion that is more easily implemented when many nuclei are present at non-negligible abundances. This impacts the way in which MESA star calculates semi-convective and thermohaline mixing. We exhibit the evolution of 3-8 M ? stars through the end of core He burning, the onset of He thermal pulses, and arrival on the white dwarf cooling sequence. We implement diffusion of angular momentum and chemical abundances that enable calculations of rotating-star models, which we compare thoroughly with earlier work. We introduce a new treatment of radiation-dominated envelopes that allows the uninterrupted evolution of massive stars to core collapse. This enables the generation of new sets of supernovae, long gamma-ray burst, and pair-instability progenitor models. We substantially modify the way in which MESA star solves the fully coupled stellar structure and composition equations, and we show how this has improved the scaling of MESA's calculational speed on multi-core processors. Updates to the modules for equation of state, opacity, nuclear reaction rates, and atmospheric boundary conditions are also provided. We describe the MESA Software Development Kit that packages all the required components needed to form a unified, maintained, and well-validated build environment for MESA. We also highlight a few tools developed by the community for rapid visualization of MESA star results.

Paxton, Bill; Cantiello, Matteo; Arras, Phil; Bildsten, Lars; Brown, Edward F.; Dotter, Aaron; Mankovich, Christopher; Montgomery, M. H.; Stello, Dennis; Timmes, F. X.; Townsend, Richard

2013-09-01

206

MTF comparisons between mesa and planar focal plane detector structures  

NASA Astrophysics Data System (ADS)

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.

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

2013-09-01

207

Global Connections: The Middle East  

NSDL National Science Digital Library

Global Connections: The Middle East "integrates and contextualizes the rich body of public broadcasting resources to provide a global and historical perspective that will help teachers, students, and the general public explore and understand seminal events of national and international significance." To that end, there is an exhaustive amount of material related to economics, stereotypes, and the role of women in the Middle East, along with a detailed Middle East timeline. Educators will also find that the site will be a good source of information to use in the classroom. The "Connecting Questions" offers perspectives and lesson plans on six large scale questions affecting the Middle East. The site is rounded out by an interactive sociopolitical map of the region.

2002-01-01

208

Results of 1999 Spectral Gamma-Ray and Neutron Moisture Monitoring of Boreholes at Specific Retention Facilities in the 200 East Area, Hanford Site  

SciTech Connect

Twenty-eight wells and boreholes in the 200 East Are% Hanford Site, Washington were monitored in 1999. The monitored facilities were past-practice liquid waste disposal facilities and consisted of six cribs and nineteen ''specific retention'' cribs and trenches. Monitoring consisted of spectral gamma-ray and neutron moisture logging. All data are included in Appendix B. The isotopes {sup 137}Cs, {sup 60}Co, {sup 235}U, {sup 238}U, and {sup 154}Eu were identified on spectral gamma logs from boreholes monitoring the PUREX specific retention facilities; the isotopes {sup 137}Cs, {sup 60}Co, {sup 125}Sb, and {sup 154}Eu were identified on the logs from boreholes at the BC Controlled Area cribs and trenches; and {sup 137}Cs, {sup 60}Co, and {sup 125}Sb were, identified on the logs from boreholes at the BX specific retention trenches. Three boreholes in the BC Controlled Area and one at the BX trenches had previous spectral gamma logs available for comparison with 1999 logs. Two of those logs showed that changes in the subsurface distribution of {sup 137}CS and/or {sup 60}Co had occurred since 1992. Although the changes are not great, they do point to continued movement of contaminants in the vadose zone. The logs obtained in 1999 create a larger baseline for comparison with future logs. Numerous historical gross gamma logs exist from most of the boreholes logged. Qualitative comparison of those logs with the 1999 logs show many substantial changes, most of which reflect the decay of deeper short-lived isotopes, such as {sup 106}Ru and {sup 125}Sb, and the much slower decay of shallower and longer-lived isotopes such as {sup 137}Cs. The radionuclides {sup 137}Cs and {sup 60}Co have moved in two boreholes since 1992. Given the amount of movement and the half-lives of the isotopes, it is expected that they will decay to insignificant amounts before reaching groundwater. However, gamma ray logging cannot detect many of the contaminants of interest such as {sup 99}Tc, NO{sub 3}, or {sup 129}I, all of which can be highly mobile in the vadose zone and, for the radionuclides, have long half-lives.

DG Horton; RR Randall

2000-01-18

209

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

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.

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

2006-01-01

210

Tunable terahertz emission from the intrinsic Josephson junctions in acute isosceles triangular Bi?Sr?CaCu?O?+? mesas.  

PubMed

In order to determine if the mesa geometry might affect the properties of the coherent terahertz (THz) radiation emitted from the intrinsic Josephson junctions in mesas constructed from single crystals of the high-temperature superconductor, Bi?Sr?CaCu?O?+?, we studied triangular mesas. For equilateral triangular mesas, the observed emission was found to be limited to the single mesa TM(1,0) mode. However, tunable radiation over the range from 0.495 to 0.934 THz was found to arise from an acute isosceles triangular mesa. This 47% tunability is the widest yet observed from the outer current-voltage characteristic branch of such mesas of any geometry. Although the radiation at a few of the frequencies in the tunable range appear to have been enhanced by cavity resonances, most frequencies are far from such resonance frequencies, and can only be attributed to the ac-Josephson effect. PMID:23389198

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

2013-01-28

211

Middle East  

SciTech Connect

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.

Hemer, D.O. (Mobil Oil Corp., New York, NY); Mason, J.F.; Hatch, G.C.

1981-10-01

212

Ground-water resources of the Florida Mesa area, La Plata County, Colorado  

USGS Publications Warehouse

Rapid population growth in La Plata County, Colorado, has increased the demand for ground water in the Florida Mesa area. This report was prepared in cooperation with La Plata County to provide needed information about the geology, extent, thickness, and depth of the aquifers in the area; sources of ground-water recharge and discharge; direction of ground-water movement; water-level changes; and water quality in the alluvial and bedrock aquifers. Ground water in the study area is present in bedrock formations and in terrace deposits on Florida Mesa. Porous or fractured sandstone beds that contain bedrock aquifers are present near land surface along the northern margin of the study area and are present at depths less than 3,000 feet throughout the study area. Terrace deposits as much as 200 feet thick and consisting of gravel, sand, silt, and clay are present on Florida Mesa. The terrace deposits and the upper part of the underlying Animas and Nacimiento Formations form the principal aquifer under the mesa. Ground water under the mesa is supplied from precipitation and irrigation water. A small part of the precipitation and irrigation water on the mesa percolates to depth in the soil and recharges the aquifer. Irrigation water is the largest source of this recharge. Water levels in the aquifer can decline because of a reduction in irrigation recharge, or because of an increase in well pumping. Because irrigation recharge is so much larger than pumping, changes in recharge can have a much larger effect on ground-water levels than can changes in pumping. Factors that tend to increase ground-water recharge and thereby increase or maintain ground- water levels include: maintaining large rates of surface-water diversion onto Florida Mesa, reducing surface flow off the mesa, increasing use of ponds and spreading basins to promote infiltration, and irrigating by use of flood irrigation. The general direction of ground-water movement on the mesa is from the northern part of the mesa to the south, southwest, and southeast. Most ground water discharges from the mesa to the Animas and Florida Rivers through seeps and springs along the margin of the mesa. Winter water levels in wells generally are lower than summer water levels because of the lack of irrigation recharge during the fall and winter. Potable water of low dissolved-solids concentration is present in the shallow parts of most aquifers.

Robson, S. G.; Wright, W. G.

1995-01-01

213

40 CFR 81.173 - Grand Mesa Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Grand Mesa Intrastate Air Quality Control Region. 81.173 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.173 Grand...

2013-07-01

214

Cut-off-mesa isolated rib optial waveguide for 3--5 heterostructure PICs  

SciTech Connect

A new waveguide is designed using a cut-off slab waveguide for fabrication of single-mode rib optical waveguides with mesa isolation. These waveguides are easy to fabricate and offer crosstalk performance perhaps better than BH waveguides.

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

1994-07-01

215

Cut-off-mesa isolated rib optial waveguide for 3--5 heterostructure PICs.  

National Technical Information Service (NTIS)

A new waveguide is designed using a cut-off slab waveguide for fabrication of single-mode rib optical waveguides with mesa isolation. These waveguides are easy to fabricate and offer crosstalk performance perhaps better than BH waveguides.

G. A. Vawter R. E. Smith

1994-01-01

216

Private Enterprise in a PrisonThe Free Market Economy of La Mesa Penitenciaria  

Microsoft Academic Search

As illustrated by La Mesa Penitenciaria, near Tijuana in the state of Baja California, the strongest and most pervasive feature of life in the Mexican prison is not the formal administration but the prison's private enterprise economy.

John A. Price

1973-01-01

217

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

SciTech Connect

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, nationwide disease outbreaks that are of special interest to DHS. MESA has been developed at Lawrence Livermore National Laboratory (LLNL) and has benefited from the world-class experience in supercomputing application development held by LLNL staff as well as the best-in-class high performance computing infrastructure in place at LLNL. MESA incorporates novel architectural features that permit it to make efficient use of available compute cycles by dynamically increasing the fidelity of the simulation in spatial (geopolitical) regions where relevant activity is occurring and keeping other regions aggregated into a computationally simpler representation. In addition to the MESA epi and economic models, the MESA DSS incorporates other key components. Integral to the parametric approach MESA employs to setup and define disease outbreak scenarios is a GUI that enables the MESA user to efficiently manage the thousands of parameters required by the simulator. The GUI provides individual parameter editors for groups of variables that support a common high level function, such as disease introduction, spread, control strategies, etc. It also provides a capability to browse through multiple study projects and develop n-additional outbreak scenarios per project through successive refinement of existing scenarios. Finally, the MESA GUI links post-processing applications that permit extraction of key data from MESA raw output, generation of spreadsheets, and geospatial mapping of simulation results. The MESA GUI is a standalone application that normally runs on the user's desktop, although its Java source code is portable and can execute under virtually any modern operating system. The final major component of the MESA DSS is the Scenario Bank, which is a web-served archive of unclassified FAD study content. The Scenario Bank implements a hierarchy of spaces, structured primarily along organizational lines (e.g., 'USDA', 'LLNL', etc), that permits participants to store simulator inputs, outputs, analysis results, reports, etc. and explicitly control who among Bank users may

Speck, D E

2008-04-28

218

Assessment of biological remains from excavations along the route of a water pipeline near Stamford Bridge, East Riding of Yorkshire (site code: SBW03)  

Microsoft Academic Search

Summary Sixty-three bulk sediment samples, two column tins, a very small amount of hand-collected shell, five boxes of hand-collected bone and five bags of spot samples of wood, recovered during excavations along the route of a water pipeline near Stamford Bridge, East Riding of Yorkshire, were submitted for an assessment of their bioarchaeological potential. Three areas of excavation (Areas C,

Allan Hall; Harry Kenward; Juliet Mant; Deborah Jaques; John Carrott; Kathryn Johnson

2004-01-01

219

MESA: reducing cache conflicts by integrating static and run-time methods  

Microsoft Academic Search

The paper proposes MESA (Multicoloring with Embedded Skewed Associativity), a novel cache indexing scheme that integrates dynamic page coloring with static skewed asso- ciativity to reduce conflicts in L2\\/L3 caches with a small de- gree of associativity. MESA associates multiple cache pages (colors) with each virtual memory page and uses two-level skewed associativity, first to map a page to a

Xiaoning Ding; Dimitrios S. Nikolopoulos; Song Jiang; Xiaodong Zhang

2006-01-01

220

In situ mesa etching and immediate regrowth in a HVPE reactor for buried heterostructure device fabrication  

Microsoft Academic Search

Mesa etching in a hydride vapour-phase epitaxy (HVPE) reactor has been studied. Etched depth, underetching and shape of the mesas have been analysed as a function of partial pressures of active gases (HCl, PH3 and InCl), stripe orientation and etching temperature. The experimental results show that the depth and undercut can be etched independently. We propose qualitative mechanisms for etching

E. Rodr??guez Messmer; T Lindström; S Lourdudoss

2000-01-01

221

Challenges in Parameterizing a Landscape Evolution Model to Predict 1000 Years of Erosion on a Mesa-top Waste Repository  

NASA Astrophysics Data System (ADS)

Low-level radioactive waste from operations at Los Alamos National Laboratory is currently being disposed in pits excavated into mesa-top repositories. One requirement for operation of the repositories is that no release of radioactive material will occur for up to 1000 years following closure of the repository. LANL is required to demonstrate that the repository can be successfully closed; including demonstrating that the waste pits will not be excavated by long term surface erosion processes. Here we describe the parameterization and application of the Siberia landscape evolution model in the optimization of the closure cap design for the Material Disposal Site G at LANL. The closure design is particularly challenging since some of the older waste pits are located near the edges of a slender finger mesa with complex topography. LANL scientists worked with the cap design engineer at URS in an iterative process to develop a stable design. In addition to design challenges, we faced significant challenges parameterizing the Siberia model for our site. Although we had multiple rainfall, runoff and sediment data sets at a range of scales (plot, first order basin and watershed), these data were not complete enough to develop the relationships required to parameterize Siberia. The data did however provide a strong realty-check on rainfall-runoff and runoff-sediment yield relationships derived from the IRS9 and Hillslope Erosion (HEM) models respectively, which were ultimately used to develop parameter values for the fluvial erosion in Siberia. Diffusion was constrained by eye-balling a match between Siberia generated topography and the observed topography (field and ALSM data) at the heads of first order channels. Siberia runs that generated colluvial hollows (non-existent at this site) indicated that the diffusion coefficient was too high. LA-UR-04-6328.

Wilson, C. J.; Crowell, K. J.; Lane, L. J.

2004-12-01

222

Analysis of tracer responses in the BULLION Forced-Gradient Experiment at Pahute Mesa, Nevada  

SciTech Connect

This report presents an analysis of the tracer data from the BULLION forced-gradient experiment (FGE) conducted on Pahute Mesa at the Nevada Test Site from June 2, 1997 through August 28, 1997, for the Underground Test Area (UGTA) Program. It also serves to document the polystyrene microsphere data from the FGE. The FGE involved the injection of solute and colloid tracers into wells ER-20-6 No. 1 and ER-20-6 No. 2 while ER-20-6 No. 3 was pumped at approximately 116 gallons per minute (gpm). The experimental configuration and test design are described briefly in this report; more details are provided elsewhere (IT, 1996, 1997, 1998). The tracer responses in the various wells yielded valuable information about transport processes such as longitudinal dispersion, matrix diffusion and colloid transport in the hydrogeologic system in the vicinity of the BULLION nuclear test cavity. Parameter values describing these processes are derived from the semi-analytical model interpretations presented in this report. A companion report (IT, 1998) presents more detailed numerical modeling interpretations of the solute tracer responses.

Paul W. Reimus; Marc J. Haga

1999-10-01

223

Elimination of mesa-sidewall gate leakage in InAlAs\\/InGaAs heterostructures by selective sidewall recessing  

Microsoft Academic Search

Conventional mesa isolation in InAlAs\\/InGaAs HFETs results in the gate coming in contact with the exposed channel at the mesa sidewall, forming a parasitic gate-leakage path. The authors propose a simple method of recessing the channel edge into the mesa sidewall using a succinic-acid-based selective etchant for InGaAs over InAlAs. SEM photographs confirm the recessing of the channel along the

Sandeep R. Bahl; I. A. del Alamo

1992-01-01

224

Water-power resources in upper Carson River basin, California-Nevada, A discussion of potential development of power and reservoir sites on east and west forks, Carson River  

USGS Publications Warehouse

West Fork Carson River offers the best opportunity for power development in the Carson River basin. The Hope Valley reservoir site could be developed to provide adequate storage regulation and concentration of fall would permit utilization of 1,400 feet of head in 51h miles below the clam site, or 1,900 feet of head in about 972 miles below the dam site; however, the average annual runoff susceptible of development is only about 70,000 acre-feet which limits the power that could be developed continuously in an average year with regulation to about 8,700 kilowatts utilizing 1,400 feet of head, or 12,000 kilowatts utilizing 1,900 feet of head. The method and degree of development will be determined to large extent by the method devised to supplement regulated flows from the Hope Valley reservoir to supply the water already appropriated for irrigation. If the Hope Valley site and the Watasheamu site on East Fork Carson River were developed coordinately water could be transferred to the West Fork for distribution through canals leading from that stream thus satisfying the deficiency due to regulation at Hope Valley and release of stored water on a power schedule. This would permit utilization of the entire 1,900 feet of fall. Independent development of the West Fork for optimum power production would require re-regulation of releases from Hope Valley reservoir and storage of a considerable part of the fall and winter flow for use during the irrigation season. Adequate storage capacity is apparently not available on the West Fork below Hope Valley; but offstream storage may be available in Diamond Valley which could be utilized by diversion from the West Fork near Woodfords. This would limit the utilization of the stream for power purposes to the development of the 1,400 feet of head between the Hope Valley dam site and Wood fords. In a year of average discharge East Fork Carson River and three of its principal tributaries could be developed to produce about 13,500 kilowatts of firm power upstream of the Watasheamu site, which has been proposed as the location of a storage reservoir, the principal use of which would be for irrigation and flood control purposes. Substantial storage regulation would be required because of the seasonal variation in flow; and while sufficient storage capacity is available for such regulation, its value for power development is limited because of the lack of concentration of fall below the storage sites where head could be economically developed. The Watasheamu reservoir with a powerplant near the Horseshoe: Bend site could be operated to develop about 5,400 kilowatts of continuous power in a year of average discharge; however, priority to use of water for irrigation purposes would undoubtedly require operation of the Watasheamu reservoir on a schedule unfavorable to the production of firm power. It is estimated that 47 million kilowatt-hours represents the maximum generation capability of a plant at the Horseshoe Bend site in year of average discharge and a large proportion of this amount would be generated during the period of peak irrigation demand and would be seasonal in nature. Installation of about 7,000 kilowatts of capacity in a plant at the Horseshoe Bend site appears feasible. Annual energy generation would probably be less than the maximum represented by streamflow, depending on the magnitude of releases from the Watasheamu reservoir for irrigation and the demand for seasonal power. It is judged, from a general consideration of the probable cost of the required Structures in relation to the benefits which would accrue from the power that could be produced, that development of East and West Forks Carson River for power purposes only would not be feasible.

Pumphrey, Harold L.

1955-01-01

225

Epitaxially passivated mesa-isolated InGaAs photodetectors  

NASA Astrophysics Data System (ADS)

We have fabricated low-dark-current InGaAs photodetectors utilizing an epitaxial structure incorporating an InAlGaAs passivation layer and a simple mesa isolation process, and requiring no implant or diffusion steps. At 295 K, areal and perimeter dark current contributions are 15 nA/cm2 and 9 pA/cm, respectively, in devices with large aspect ratios biased at -0.1 V. High responsivity was achieved even at zero bias in these devices. Devices were modeled using a commercial drift-diffusion simulator. Good fits to reverse dark current-voltage measurements were obtained using a model that included both bulk and interfacial generation mechanisms. Assuming similar electron and hole Shockley-Read-Hall lifetimes, dark current under small reverse bias are consistent with generation at the interface between the absorber and underlying layers. With increasing negative bias a large increase in dark current is associated with depletion near the InAlGaAs/absorber interface, while small increases in current at large reverse bias suggest long Shockley-Read-Hall lifetimes in the absorber. Forward biasing of these devices results in efficient injection of minority carrier holes into the absorber region, mimicking photogeneration and providing a method to predict the performance of illuminated detector arrays.

Klem, John F.; Kim, Jin K.; Cich, Michael J.; Hawkins, Samuel D.; Leonhardt, Darin; Fortune, Torben R.; Coon, Wesley T.

2013-06-01

226

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

SciTech Connect

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.

Holt, G.S.; Parker, D.F. (Baylor Univ., Waco, TX (United States). Dept. of Geology)

1993-02-01

227

Media, Democracy and Development: Learning from East Timor.  

ERIC Educational Resources Information Center

|Describes the East Timor Press Project, in which students in the School of Media Journalism at the Queensland University of Technology used the Internet to support the development of an independent press in East Timor. Assesses the strengths and weaknesses of the Project and reviews the benefits of the Project to the students, site users and East

Cokley, John; da Costa, Aderito Hugo; Lonsdale, Jamie; Romano, Angela; Spurgeon, Christina; Tickle, Sharon

2000-01-01

228

The Council on East Asian Libraries (CEAL)  

NSDL National Science Digital Library

The Council on East Asian Libraries maintains a page directed to the needs of librarians who must deal with the growing volume of Asian electronic information and should be useful for anyone interested in East Asia or in Asian studies. The site includes pointers to specific resources, such as the largest internet site for Chinese software, and links grouped by area: Japan, China, Taiwan, Hong Kong, Macau, South Korea, North Korea, and the Asia/Pacific Basin.

1997-01-01

229

Energy-trapping analysis for the bi-stepped mesa quartz crystal microbalance using the finite element method  

NASA Astrophysics Data System (ADS)

AT-cut quartz crystal plate resonators have been widely used for different frequency applications, such as the quartz crystal microbalance (QCM), owing to its high frequency-temperature stability. In this study, a finite element program based on two-dimensional Mindlin AT-quartz plate equations for thickness shearing, thickness twist and flexure vibration is written using MATLAB language. The thickness-shearing mode shape and its overtone of the rectangular AT-cut quartz resonator are computed using the program. The energy-trapping effects on a conventional resonator, a single-step-mesa resonator and a stepped bi-mesa structure resonator are analyzed. The convergence study is presented for a rectangular quartz plate without electrodes, and the frequency spectrum of the quartz plate around the fundamental TS mode is computed. A factor related to the vibrational energy of the thickness-shearing mode is defined to evaluate the energy-trapping characteristics of different structure designs. The comparisons between the conventional quartz resonator and mesa-design resonator show that the mesa design can trap the vibration energy within the electrode area more effectively. The computation of the energy-trapping factor as a function of the dimensions of the mesa depth and bi-mesa width design are performed. The results show that when the mesa depth of the single mesa reaches a certain value, further energy-trapping improvement cannot be achieved by increasing the mesa depth. A bi-mesa design can further improve the decoupling characteristics of the resonator beyond that of the single-mesa resonator.

Lu, F.; Lee, H. P.; Lim, S. P.

2005-02-01

230

Recommended Model Development Principles for East Hempfield, West Hempfield and Manor Townships, and Lancaster County, Pennsylvania. Consensus of the Local Site Planning Roundtable.  

National Technical Information Service (NTIS)

This document is a product of the LancasterArea Site Planning Roundtable, a year-long consensus process initiated by the Builders forthe Bay Program to review existing development codes and identify regulatory barriersto environmentally-sensitive resident...

2004-01-01

231

Lower East Side Tenement Museum  

NSDL National Science Digital Library

The majority of National Trust Park properties commemorate the lives of famous politicians and other well-known Americans, but the Lower East Side Tenement Museum commemorates the everyday (and in some cases extraordinary) lives of some of the 7,000 immigrants who lived at 97 Orchard Street from 1863 to 1935. At the site, visitors can take virtual tours of immigrant family apartments, including those of an Italian Catholic family. The tours allow visitors to move through their apartments, along with the ability to listen to an audio presentation that offers additional details about the day-to-day experiences of immigrants in the Lower East Side. Particularly helpful is a 97-page online Tenement Encyclopedia, which defines and discusses terms common to the immigrant experience. Finally, reflecting the fact that the museum is in an urban milieu, information about businesses and local culture in the Lower East Side is also provided for persons journeying to New York to visit.

232

Women Now Nearly Half of San Diego Mesa Community College's Geographic Information Systems (GIS) Program  

NSDL National Science Digital Library

This brief case study highlights San Diego's Mesa Community College's Geographic Information Systems program, and the strategies that program has adopted to recruit and retain female students. The program took part in the CalWomen Tech Project, which was a collaborative effort by several colleges to increase enrollment of female students in technical areas of study. Some of the strategies that worked for Mesa Community College are outlined here, including: -Identifying female role models in GIS and taking their photos for marketing collateral to be developed by IWITTS and:-Distributing recruitment posters, flyers, brochures and a CalWomenTech College Website section featuring female role models.This narrative, and the lessons that can be learned from the success of Mesa Community College in this area, would be useful for other community college and technical programs looking to increase their numbers of female students.

2012-01-26

233

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

NASA Astrophysics Data System (ADS)

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.

Yun, Lijuan; Chen, Wenli

2010-02-01

234

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

...INTERIOR Bureau of Land Management [CACA 47740, LLCAD07000...Notice of Closure of Airport Mesa/Carizzo Creek...AGENCY: Bureau of Land Management, Interior. ACTION...The Bureau of Land Management (BLM) has closed approximately...land described as the Airport Mesa/Carrizo...

2010-04-14

235

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

...INTERIOR Bureau of Land Management [LLCAD07000 L12200000...Notice of Closure of Airport Mesa/Carizzo Creek...AGENCY: Bureau of Land Management, Interior. ACTION...The Bureau of Land Management (BLM) has closed approximately...land described as the Airport Mesa/Carrizo...

2012-11-16

236

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

Microsoft Academic Search

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

Ramon Flores

2007-01-01

237

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

USGS Publications Warehouse

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.

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

2011-01-01

238

4. East elevation, facing west (Note: B/W scale on east ...  

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

4. East elevation, facing west (Note: B/W scale on east elevation in 1/2 ft increments) - Nevada Test Site, Reactor Maintenance & Disassembly Complex, Junior Hot Cell, Jackass Flats, Area 25, South of intersection of Roads F & G, Mercury, Nye County, NV

239

Two-dimensional array of room-temperature nanophotonic logic gates using InAs quantum dots in mesa structures  

NASA Astrophysics Data System (ADS)

By growing two layers of InAs quantum dots on a substrate and processing the substrate to form mesa structures, we successfully fabricated for the first time nanophotonic devices that operate at room temperature. We fabricated two types of two-dimensional mesa arrays. The mesa dimensions of the individual arrays were 300 nm × 300 nm × 85 nm and 200 nm × 200 nm × 85 nm, and the areal density was 1×108 cm-2. By adjusting the characteristics of energy transfer via dressed photons between two InAs quantum dots in the upper and lower layers of the mesa structures, we implemented devices that operate as AND gates and NOT gates. We fabricated 133 devices (with mesa dimensions of 300 nm on each side), of which 53 devices operated as AND gates and 50 devices operated as NOT gates.

Kawazoe, T.; Ohtsu, M.; Aso, S.; Sawado, Y.; Hosoda, Y.; Yoshizawa, K.; Akahane, K.; Yamamoto, N.; Naruse, M.

2011-06-01

240

Recording experiment on Rainier Mesa in conjunction with a reflection survey  

SciTech Connect

The chemical explosion of the NPE was recorded on the surface of Rainier Mesa along the same line which had previously been the site of a high resolution reflection survey. Six three-component accelerometer stations where distributed along the 550 meter line, which was offset about 600 meters from the epicenter of the explosion. The bandwidth of the acceleration data extends to 100 Hz. Even though the separations of the stations was only about 100 meters, the waveforms and the amplitudes exhibited considerable variability, especially for the transverse component of motion. The maximum accelerations ranged between 0.27 g and 1.46 g, with the maximums of the average traces being 0.57 g on the radial component, 0.28 on the transverse component, and 0.50 g on the vertical component. Using the results of the reflection survey to help constrain the velocity model, the acceleration data were inverted to obtain a preliminary estimate of the seismic moment tensor of the NPE. This result is a strong diagnostic for the NPE being an explosion, showing a somewhat asymmetric extensional source with very small shear components. When interpreted in terms of a spectral model and scaling relationships, the isotropic moment tensor indicates a yield of 1.4 kt, an elastic radius of 116 meters and a cavity radius of 15.5 meters. This interpretation includes a source time function which contains appreciable overshoot, and, if shown to be reliable, this feature of the explosion could have a significant effect upon the analyses of other types of seismic data.

Johnson, L.R.

1994-06-01

241

Site characterization summary report for dry weather surface water sampling upper East Fork Poplar Creek characterization area Oak Ridge Y-12 Plant, Oak Ridge, Tennessee  

SciTech Connect

This report describes activities associated with conducting dry weather surface water sampling of Upper East Fork Poplar Creek (UEFPC) at the Oak Ridge Y-12 Plant, Oak Ridge, Tennessee. This activity is a portion of the work to be performed at UEFPC Operable Unit (OU) 1 [now known as the UEFPC Characterization Area (CA)], as described in the RCRA Facility Investigation Plan for Group 4 at the Oak- Ridge Y-12 Plant, Oak Ridge, Tennessee and in the Response to Comments and Recommendations on RCRA Facility Investigation Plan for Group 4 at the Oak Ridge Y-12 Plant, Oak Ridge, Tennessee, Volume 1, Operable Unit 1. Because these documents contained sensitive information, they were labeled as unclassified controlled nuclear information and as such are not readily available for public review. To address this issue the U.S. Department of Energy (DOE) published an unclassified, nonsensitive version of the initial plan, text and appendixes, of this Resource Conservation and Recovery Act (RCRA) Facility Investigation (RFI) Plan in early 1994. These documents describe a program for collecting four rounds of wet weather and dry weather surface water samples and one round of sediment samples from UEFPC. They provide the strategy for the overall sample collection program including dry weather sampling, wet weather sampling, and sediment sampling. Figure 1.1 is a schematic flowchart of the overall sampling strategy and other associated activities. A Quality Assurance Project Plan (QAPJP) was prepared to specifically address four rounds of dry weather surface water sampling and one round of sediment sampling. For a variety of reasons, sediment sampling has not been conducted and has been deferred to the UEFPC CA Remedial Investigation (RI), as has wet weather sampling.

NONE

1996-08-01

242

East-West Center  

NSDL National Science Digital Library

Started in 1960 by the U.S. Congress, the East-West Center's primary purpose is "to strengthen relations and understanding among the peoples and nations of Asia, the Pacific, and the United States." To accomplish this purpose, the Center serves as a functional hub for education, cooperative research, and scholarly dialogue. On their homepage, visitors can look over the latest news from scholars at the Center, look over a list of upcoming events sponsored by the Center, and also learn about some of their most recent publications. Academics visiting the site may wish to click on over to the "Research" area. Here they will find information on their primary areas of interest, which include population and health, environmental change, and politics and governance. Finally, visitors should look at their "Publications" area, as it includes free downloads, abstracts, and access to ordering information.

243

Water-quality characteristics of urban storm runoff at selected sites in East Baton Rouge Parish, Louisiana, February 2006 through November 2009  

USGS Publications Warehouse

Water samples were collected at three watersheds in East Baton Rouge Parish, Louisiana, during February 2006 through November 2009 for continued evaluation of urban storm runoff. The watersheds represented land uses characterized predominantly as established commercial, industrial, and residential. The following water-quality data are reported: physical and chemical-related properties, fecal coliform, nutrients, trace elements, and organic compounds. Results of water-quality analyses enabled calculation of event-mean concentrations and estimated annual contaminant loads and yields of storm runoff from nonpoint sources for 12 water-quality properties and constituents. Lead met or exceeded the U.S. Environmental Protection Agency Maximum Contaminant Level of 15 micrograms per liter for drinking water standards in 4 of 14 samples. Low level concentrations of mercury were detected in all 14 samples, and half were two to four times above the reporting limit of 0.02 micrograms per liter. The average dissolved phosphorus concentrations from each land use were two to four times the U.S. Environmental Protection Agency criterion of 0.05 milligrams per liter. Diazinon was detected in one sample at a concentration of 0.2 micrograms per liter. In the residential watershed, the largest at 216 acres, contaminant loads for 5 of the 12 water-quality properties and constituents were highest, with 4 of these being nutrients. The industrial watershed, 97 acres, had the highest contaminant loads for 6 of the 12 water-quality properties and constituents with 3 of these being metals, which is indicative of the type of land use. Zinc had the highest metal load (155 pounds per year) in the industrial watershed, compared to 36 pounds per year in the residential watershed, and 32 pounds per year in the established commercial watershed. The industrial watershed had the highest yields for 8 of the 12 water-quality properties and constituents, whereas the established commercial watershed had the lowest yield for 5 of the 12. Lower yields from the established commercial and residential watersheds could be from Best Management Practices in place that help control increased runoff from impervious areas and land development. Metal yields from all the watersheds were less than 1 pound per acre per year, except for the zinc from the industrial watershed, which was 2 pounds per acre per year. Nutrient yields in the established commercial watershed were lowest for total nitrogen, ammonia plus organic nitrogen (Kjeldahl nitrogen), and dissolved phosphorus.

Frederick, C. Paul

2011-01-01

244

Remedial action selection report Maybell, Colorado, site. Final report  

SciTech Connect

The Maybell uranium mill tailings site is 25 miles (mi) (40 kilometers [km]) west of the town of Craig, Colorado, in Moffat County, in the northwestern part of the state. The unincorporated town of Maybell is 5 road mi (8 km) southwest of the site. The site is 2.5 mi (4 km) northeast of the Yampa River on relatively flat terrain broken by low, flat-topped mesas. U.S. Highway 40 runs east-west 2 mi (3.2 km) south of the site. The designated site covers approximately 110 acres (ac) (45 hectares [ha]) and consists of a concave-shaped tailings pile and rubble from the demolition of the mill buildings buried in the former mill area. The site is situated between Johnson Wash to the east and Rob Pit Mine to the west. Numerous reclaimed and unreclaimed mines are in the immediate vicinity. Aerial photographs (included at the end of this executive summary) show evidence of mining activity around the Maybell site. Contaminated materials at the Maybell processing site include the tailings pile, which has an average depth of 20 feet (ft) (6 meters [ml]) and contains 2.8 million cubic yards (yd{sup 3}) (2.1 million cubic meters [m{sup 3}]) of tailings. The former mill processing area is on the north side of the site and contains 20,000 yd 3 (15,000 m{sup 3}) of contaminated demolition debris. Off-pile contamination is present and includes areas adjacent to the tailings pile, as well as contamination dispersed by wind and surface water flow. The volume of off-pile contamination to be placed in the disposal cell is 550,000 yd{sup 3}(420,000 m{sup 3}). The total volume of contaminated materials to be disposed of as part of the remedial action is estimated to be 3.37 million yd{sup 3} (2.58 million m{sup 3}).

NONE

1996-12-01

245

Ancient Near East.net  

NSDL National Science Digital Library

The ancient Near East has been the birthplace of some of civilization's most important advances, among them written language, the impulse to urbanism, and crop cultivation. Created and maintained by Paul James Cowie (a doctoral student at Australia's Macquarie University), the site is a fine resource for both scholars and the general public. Scholars will want to make sure and take a look at the conference diary section, which lists upcoming conferences and various calls for papers and other submissions. The announcements section is of additional interest, as it gives advance notice regarding related activities, including international symposia. For the general public, a host of sections (such as museums and galleries) offer comprehensive listings of Web-based resources ranging from Egyptology links to those dealing with cuneiform. The Web site also contains a listing of links to museums that specialize in the antiquities and archaeology of the Near East located around the world.

2000-01-01

246

Assessing Hydraulic Connections Across Structural Blocks, Pahute Mesa, Nevada---Detecting Distant Drawdowns  

Microsoft Academic Search

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

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

2010-01-01

247

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

ERIC Educational Resources Information Center

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…

Hong, Rebecca C.; Jun, Alexander

2012-01-01

248

Water quality simulation study of the Black Mesa coal slurry pipeline system  

Microsoft Academic Search

Water quality simulation of the black mesa coal slurry Pipeline System was carried out using specially designed laboratory techniques. Excellent correlation was obtained between actual and simulated water quality characteristics, proving the success of the methods employed. The techniques provide a useful tool for forecasting waste water characteristics, for obtaining discharge permits and design of treatment facilities for slurry pipelines

A. S. Sandhu; R. L. Grandhi

1981-01-01

249

Water quality simulation study of the Black Mesa coal slurry pipeline system  

SciTech Connect

Water quality simulation of the black mesa coal slurry Pipeline System was carried out using specially designed laboratory techniques. Excellent correlation was obtained between actual and simulated water quality characteristics, proving the success of the methods employed. The techniques provide a useful tool for forecasting waste water characteristics, for obtaining discharge permits and design of treatment facilities for slurry pipelines in general.

Sandhu, A.S.; Grandhi, R.L.

1981-01-01

250

The Mesa Unified School District Advanced Placement Program--Perspectives of Former Students. Research Report 52.  

ERIC Educational Resources Information Center

|Graduates of the Mesa Public Schools Advanced Placement (A/P) program were surveyed to determine: (1) their attitudes toward their experience in the program; (2) college credits received for their A/P classes; and (3) their suggestions for A/P program improvement. A/P courses, offered within the regular curriculum, have grown significantly since…

Troidl, Robert; DeGracie, James S.

251

[The first experience wih ICSI and MESA in Panama, Central America and the Caribbean].  

PubMed

The intracytoplasmic sperm injection (ICSI) has represented an important advance in human reproduction technology, improving the results in those couples with a very low probability of achieving pregnancy. Our aim is present the results of our first experience with ICSI and MESA in Panama, Central America and the Caribe. PMID:10997189

Alleyne, C; Sánchez, F

252

An Examination and Review of the Collection Development Policies and Procedures of the Mesa College Library.  

ERIC Educational Resources Information Center

This report on a study of the acquisition policies and procedures of the Mesa College Library (Grand Junction, Colorado) begins by discussing the techniques used for data collection, including: (1) measurement of shelflist cards; (2) calculation of average imprint date, accession date, number of circulations, price, and year of latest circulation;…

Connaway, Lynn Silipigni

253

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

ERIC Educational Resources Information Center

|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…

Hong, Rebecca C.; Jun, Alexander

2012-01-01

254

Mineral resources of the Mancos Mesa Wilderness Study Area, San Juan County, Utah  

Microsoft Academic Search

The Mancos Mesa Wilderness Study Area consists of 51,440 acres in San Juan County, Utah. This study area is on the west flank of the north-trending Monument Uplift and is underlain by gently west dripping sedimentary rocks of Paleozoic and Mesozoic age. There is moderate mineral resource potential for uranium and a moderate energy resource potential for oil and gas

F. G. Poole; G. A. Desborough; H. N. Barton; W. F. Hanna; K. Lee; R. F. Kness

1989-01-01

255

Generalized Model and Basic Equations for an EHF Autodyne HMC Based on the Gunn Planar Mesas  

Microsoft Academic Search

The results of theoretical investigations into an EHF autodyne HMC with the multipurpose crystal having N planar mesas are presented. Continuous regime of NMC operation as a multimodular autodyne system of polyharmonic generation under the action of self-radiation reflected at each harmonic is examined. Basic relations for autodyne response are derived. General conclusions on specific features of autodyne self-oscillations, which

S. D. Votoropin; V. Ya. Noskov

2001-01-01

256

Emplacement of multiple magma sheets and wall rock deformation: Trachyte Mesa intrusion, Henry Mountains, Utah  

Microsoft Academic Search

A detailed structural and rock magnetic study of the Trachyte Mesa intrusion and deformed sedimentary wall rocks, Henry Mountains, Utah, indicates that the intrusion grew vertically and horizontally by the accumulation of multiple horizontal magma sheets. 2–3cm thick shear zones recognized by intensely cataclasized plagioclase phenocrysts define the contact between sheets. Sheets have bulbous and \\/ or steep frontal terminations

Sven Morgan; Amy Stanik; Eric Horsman; Basil Tikoff; Michel de Saint Blanquat; Guillaume Habert

2008-01-01

257

SUELOS DE LA CUENCA DEL SANTO DOMINGO. SECTOR LAS MESAS. (CARACTERIZACIÓN FÍSICO- QUÍMICA). MÉRIDA-VENEZUELA  

Microsoft Academic Search

The soils of the area of Las Mesas, basin Santo Domingo, Mérida state, are conditioned in the fundamental for the position geomorphologic of strong slopes. The action biochemical is the one which permits the construction of the soils in spite of the conditions of discharges precipitation and of moderate temperatures. The soils in accordance with Soil Taxonomy (Soil Survey Staff,

Dolores Gutiérrez; Guido Ochoa; Jajaira Oballos; Juan Carlos Velásquez

258

Horse Mesa Dam Maricopa County, Arizona: Photographs Written Historical and Descriptive Data Reduced Copies of Drawings.  

National Technical Information Service (NTIS)

The report provides a photographic record and drawings of Horse Mesa Dam, on the Salt River in Central Arizona. The narrative history of the dam is contained in the HAER No. 14, which documents Mormon Flat Dam downstream of Horseshoe Dam.

D. M. Introcaso

1989-01-01

259

Elemental characterization and source identification of PM 2.5 using multivariate analysis at the suburban site of North-East India  

NASA Astrophysics Data System (ADS)

Aerosol samples for PM 2.5 were collected at a suburban site of India during Jan 2007 to Jan 2008. The sampling site is exposed to different antropic source emissions like vehicular emission, wood burning, coal based industries and other industrial activities. The mass concentrations of PM 2.5, major elements (Al, Si, P, S, Na, K, Ca, Ti, V, Cr, Mn, Fe, Te, Co, Ni, Cu, Zn, Cd, Sn, Sb, and Pb) and major ions (Cl -, NO 3-, SO 42-, and NH 4+) were determined for winter and rainy seasons. Their levels were found higher than those of in various European and American cities, however, comparable to those of some Asian cities. Analysis of variance (ANOVA) showed significant seasonal variation for concentrations of PM 2.5, NO 3-, SO 42- and most of the elements. This seasonal variation is due to enhanced heating activities and stagnant climatic conditions in winter and removal of pollutants by wet deposition in the rainy period. Source apportionment was undertaken using enrichment factor (EF), Spearman's correlation and absolute principal component analysis. A five-factor model for explaining the observed PM 2.5 levels was found to provide realistic results. Evaluation of element abundance at site indicates different pollution levels. The source identification of this study shows that PM 2.5 levels were influenced by not only local and industrial activities but also long range transport. Traffic induced crustal sources (38%); coal combustion (26%), industrial and vehicular emissions (19%), wood burning (9%) and secondary aerosol formation (8%) are the major contributors to PM 2.5 levels in the city.

Khare, Puja; Baruah, B. P.

2010-10-01

260

Mechanisms and duration of non-tectonically assisted magma emplacement in the upper crust: The Black Mesa pluton, Henry Mountains, Utah  

NASA Astrophysics Data System (ADS)

A new study of Black Mesa pluton (Henry Mountains, Colorado Plateau, Utah, USA) indicates that it is a classic example of a small upper-crustal pluton assembled over a few years by incremental amalgamation of discrete magma pulses. The results of our petrostructural study of the pluton interior allow us to constrain the geometry, kinematics and timing of the processes. The symmetric internal fabric is interpreted as an evidence for a feeding by below and not laterally. The observed rotation of the lineation, from WNW ESE on the very top to NNE SSW below, lead us to propose that the fabric at the base of the pluton is a record of magma infilling process, and the fabric at the very top is a record of the strain due to the relative movement between magma and wallrocks. A consequence is that except at the contact between pluton and wallrocks (top and margins), the stretching direction, recorded by the lineation, is not parallel to the flow direction of the magma i.e. displacement. The Black Mesa pluton is a sheeted laccolith on its western edge and a bysmalith on its eastern edge. This E W asymmetry in pluton geometry/construction and the symmetrical internal fabric indicates that the apparently different west and east growth histories could have occurred simultaneously. Our field data indicate pluton growth through an asymmetric vertical stacking of sill-like horizontal magma sheets. One-dimensional thermal models of the pluton provide maximum limits on the duration of its growth. We have constrained the number, the thickness, and the frequency of magma pulses with our structural observations, including: (1) the emplacement of the pluton by under-accretion of successive magma pulses, (2) the absence of solid-state deformation textures at internal contacts, and (3) the apparent absence of significant recrystallization in the wallrocks. Our results suggest that the emplacement of the Black Mesa pluton was an extremely rapid event, with a maximum duration on the order of 100 years, which requires a minimum vertical displacement rate of the wallrocks immediately above the pluton greater than 2 m/yr. Finally, our data show that the rates of plutonic and volcanic processes could be similar, a significant result for interpretation of magma transfer in arc systems.

de Saint-Blanquat, Michel; Habert, Guillaume; Horsman, Eric; Morgan, Sven S.; Tikoff, Basil; Launeau, Patrick; Gleizes, Gérard

2006-12-01

261

Hunter-gatherer adaptations and environmental change in the southern Great Basin: The evidence from Pahute and Rainier mesas  

SciTech Connect

This paper reviews the evidence for fluctuations in past environments in the southern Great Basin and examines how these changes may have affected the strategies followed by past hunter and gatherers in their utilization of the resources available on a highland in this region. The evidence used to reconstruct past environments for the region include botanical remains from packrat middens, pollen spectra from lake and spring deposits, faunal remains recovered from archaeological and geologic contexts, tree-ring indices from trees located in sensitive (tree-line) environments, and eolian, alluvial and fluvial sediments deposited in a variety of contexts. Interpretations of past hunter and gatherer adaptive strategies are based on a sample of 1,311 archaeological sites recorded during preconstruction surveys on Pahute and Rainier mesas in advance of the US Department of Energy`s nuclear weapons testing program. Projectile point chronologies and available tree-ring, radiocarbon, thermoluminescence and obsidian hydration dates were used to assign these archaeological sites to specific periods of use.

Pippin, L.C.

1998-06-01

262

Final design, installation and baseline testing of 500 kW direct contact pilot plant at East Mesa  

SciTech Connect

The pilot plant was configured to accomplish two objectives - first to evaluate the overall performance potential of direct contact powerplants and second to develop design criteria and parameters for full-scale direct contact plants. The pilot plant includes all of the process functions that would be incorporated in a full-scale plant. Incoming brine is treated to remove undissolved gases, pumped through the direct contact heat exchanger (DCHX), and then sent to a recovery system for removal of the dissolved working fluid. The chosen working fluid is isobutane (IC/sub 4/). The working fluid loop includes a radial inflow turbine with generator, condensers, hot-well reservoir, and a feed pump. A downwell pump was installed in the geothermal well to supply the plant with unflashed brine. (MHR)

Hlinak, A.; Lobach, J.; Nichols, K.; Olander, R.; Werner, D.

1980-05-30

263

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

SciTech Connect

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.

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

1983-12-01

264

UN News Centre: The Middle East  

NSDL National Science Digital Library

The Middle East is a vastly complex region, both in terms of its cultural history and the very intricate political economy that is in flux throughout the area. The UN News Centre area dedicated to the Middle East will help interested parties keep abreast of developments in the area, along with providing them access to information about the UN's activities and initiatives in the region. The site organizes the material into a number of sections, such as those that contain press remarks and statements from the Secretary General, resolutions from the Secretary Council, and documents from the General Assembly relating to the Middle East. The homepage also contains specific information on the UN peace missions in such locales as Lebanon and the Golan Heights. As with most sites offered by the UN, the materials on this site are available in Arabic, French, Russian, Spanish, and Chinese.

265

110GHz, 50%-efficiency mushroom-mesa waveguide p-i-n photodiode for a 1.55-?m wavelength  

Microsoft Academic Search

A mushroom-mesa structure is proposed to reduce the CR-time constant which originates from the waveguide photodiode structure. Experimental results at a 1.55-?m wavelength show that the multimode waveguide p-i-n photodiode with mushroom-mesa structure has an electrical 3-dB bandwidth of more than 75 GHz in the frequency domain and an electrical 3-dB bandwidth of 110 GHz in the time domain. The

K. Kato; A. Kozen; Y. Muramoto; Y. Itaya; T. Nagatsuma; M. Yaita

1994-01-01

266

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

Microsoft Academic Search

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

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

1983-01-01

267

Geological site characterization for the proposed Mixed Waste Disposal Facility, Los Alamos National Laboratory  

SciTech Connect

This report presents the results of geological site characterization studies conducted from 1992 to 1994 on Pajarito Mesa for a proposed Los Alamos National Laboratory Mixed Waste Disposal Facility (MWDF). The MWDF is being designed to receive mixed waste (waste containing both hazardous and radioactive components) generated during Environmental Restoration Project cleanup activities at Los Alamos. As of 1995, there is no Resource Conservation and Recovery Act (RCRA) permitted disposal site for mixed waste at the Laboratory, and construction of the MWDF would provide an alternative to transport of this material to an off-site location. A 2.5 km long part of Pajarito Mesa was originally considered for the MWDF, extending from an elevation of about 2150 to 2225 m (7060 to 7300 ft) in Technical Areas (TAs) 15, 36, and 67 in the central part of the Laboratory, and planning was later concentrated on the western area in TA-67. The mesa top lies about 60 to 75 m (200 to 250 ft) above the floor of Pajarito Canyon on the north, and about 30 m (100 ft) above the floor of Threemile Canyon on the south. The main aquifer used as a water supply for the Laboratory and for Los Alamos County lies at an estimated depth of about 335 m (1100 ft) below the mesa. The chapters of this report focus on surface and near-surface geological studies that provide a basic framework for siting of the MWDF and for conducting future performance assessments, including fulfillment of specific regulatory requirements. This work includes detailed studies of the stratigraphy, mineralogy, and chemistry of the bedrock at Pajarito Mesa by Broxton and others, studies of the geological structure and of mesa-top soils and surficial deposits by Reneau and others, geologic mapping and studies of fracture characteristics by Vaniman and Chipera, and studies of potential landsliding and rockfall along the mesa-edge by Reneau.

Reneau, S.L.; Raymond, R. Jr. [eds.

1995-12-01

268

Al Bawaba: The Middle East Gateway  

NSDL National Science Digital Library

Available in both Arabic and English, this gateway links users to a wide variety of sites and resources from and about the Middle East. The heart of the site is the Webguide, which contains briefly annotated links organized by topic and category. These include Education & Academia, News & Media, References & Resources, and Culture & Society. Among the numerous additional resources at the site are news headlines, a business portal, travel information, and forums.

269

Differential Sensitivity Theory applied to the MESA code for high pressure interactions  

SciTech Connect

A technique called Differential Sensitivity Theory (DST) is applied to the system of equations solved by the MESA hydrocode. DST uses adjoint techniques to determine exact sensitivity derivatives, i.e., if R is a calculational result of interest (response R) and {alpha}{sub i} is a calculational input (parameter {alpha}{sub i}), then {partial_derivative}R/{partial_derivative}{alpha}{sub i} is defined as the sensitivity. The advantage of using DST is that for an n-parameter problem all n sensitivities can be obtained by integrating the solutions from only two calculations, a MESA calculation and its corresponding adjoint calculation using an Adjoint Continuum Mechanics code (ACM). This work describes the derivation and solution of the appropriate set of adjoint and sensitivity equations for the purpose of computing sensitivities for high-rate two-dimensional, multi-component, high deformation problems. As an example, results are presented for a flyer plate problem.

Maudlin, P.J.; Henninger, R.J.; Harstad, E.N.

1993-07-01

270

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

SciTech Connect

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.

Cagliostro, D.J.; Mandell, D.A.; Schwalbe, L.A.; Adams, T.F.; Chapyak, E.J. (Los Alamos National Lab., NM (USA))

1989-01-01

271

JPRS Report, East Europe.  

National Technical Information Service (NTIS)

Partial Contents: East Europe, Party Activities, Socialist Party, Freedom Fighters, Education, Youth Training, Historian, Death Penalty, Peace Making Duties, Socialism, Communism, Economics, Restructuring, Catastrophic Condition, Computer Production, edit...

1988-01-01

272

Evaluation of Pleistocene groundwater flow through fractured tuffs using a U-series disequilibrium approach, Pahute Mesa, Nevada, USA  

USGS Publications Warehouse

Groundwater flow through fractured felsic tuffs and lavas at the Nevada National Security Site represents the most likely mechanism for transport of radionuclides away from underground nuclear tests at Pahute Mesa. To help evaluate fracture flow and matrix–water exchange, we have determined U-series isotopic compositions on more than 40 drill core samples from 5 boreholes that represent discrete fracture surfaces, breccia zones, and interiors of unfractured core. The U-series approach relies on the disruption of radioactive secular equilibrium between isotopes in the uranium-series decay chain due to preferential mobilization of 234U relative to 238U, and U relative to Th. Samples from discrete fractures were obtained by milling fracture surfaces containing thin secondary mineral coatings of clays, silica, Fe–Mn oxyhydroxides, and zeolite. Intact core interiors and breccia fragments were sampled in bulk. In addition, profiles of rock matrix extending 15 to 44 mm away from several fractures that show evidence of recent flow were analyzed to investigate the extent of fracture/matrix water exchange. Samples of rock matrix have 234U/238U and 230Th/238U activity ratios (AR) closest to radioactive secular equilibrium indicating only small amounts of groundwater penetrated unfractured matrix. Greater U mobility was observed in welded-tuff matrix with elevated porosity and in zeolitized bedded tuff. Samples of brecciated core were also in secular equilibrium implying a lack of long-range hydraulic connectivity in these cases. Samples of discrete fracture surfaces typically, but not always, were in radioactive disequilibrium. Many fractures had isotopic compositions plotting near the 230Th-234U 1:1 line indicating a steady-state balance between U input and removal along with radioactive decay. Numerical simulations of U-series isotope evolution indicate that 0.5 to 1 million years are required to reach steady-state compositions. Once attained, disequilibrium 234U/238U and 230Th/238U AR values can be maintained indefinitely as long as hydrological and geochemical processes remain stable. Therefore, many Pahute Mesa fractures represent stable hydrologic pathways over million-year timescales. A smaller number of samples have non-steady-state compositions indicating transient conditions in the last several hundred thousand years. In these cases, U mobility is dominated by overall gains rather than losses of U.

Paces, James B;Nichols, Paul J;Neymark, Leonid A.;Rajaram, Harihar

2013-01-01

273

Design aspects of the underground structures of the Serra da Mesa Hydroelectric Power Plant  

Microsoft Academic Search

The Serra da Mesa Hydroelectric Power Plant, located in the Tocantins river, 210 km north of Brasilia, Brazil, is under construction and power generation will start in 1998. The installed power capacity is 1,200 MW. This project includes one of the largest underground power plants in Brazil, totaling 550,000 m3 of underground excavations for the hydraulic circuit. The underground hydraulic

J. A. Mello Franco; A. P. Assis; W. J. Mansur; J. C. F. Telles; J. A. F. Santiago

1997-01-01

274

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

Microsoft Academic Search

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

Speck

2008-01-01

275

Temperature and thickness dependence of steam oxidation of AlAs in cylindrical mesa structures  

Microsoft Academic Search

The Deal-Grove model of thermal oxidation kinetics is adapted to cylindrically symmetric mesa structures and applied to study steam oxidation of AlAs. Oxidation process parameters are extracted from available experimental data as functions of temperature and the AlAs layer thickness. The oxidation rate is found to be very sensitive not only to temperature, but also to the oxidation front position

M. Osinski; T. Svimonishvili; G. A. Smolyakov; V. A. Smagley; P. Mackowiak; W. Nakwaski

2001-01-01

276

Mesa Public Schools: as Seen through the Eyes of 1982-83 Seniors. RR-51.  

ERIC Educational Resources Information Center

|As part of the ongoing process of self-assessment begun with the 1973 Graduate Follow-up Study of the 1971 graduates and continued in 1978 with the 1976 graduates and in 1983 with the 1980 graduates, it was decided to conduct a survey of the 1983 seniors of the Mesa Public Schools during the spring of 1983. The data collected and analyzed at that…

Troidl, Robert; Peterson, Sarah

277

Extension of the Stevens Gulch Road and related timber sales, Grand Mesa, Uncompahgre, and Gunnison National Forests in Delta and Mesa counties, Colorado  

SciTech Connect

Extension of Stevens Gulch Road and related timber sales are proposed on the Paonia Ranger District of Grand Mesa, Uncompahgre, and Gunnison National Forests in Delta and Mesa counties, Colorado. The study area comprises 88,466 acres. The preferred alternative would extend the Stevens Gulch Road for 10.6 miles northward from the end of the existing double-lane graveled section to the junction with Buzzard Divide Road. The existing Colorado 133 and Buzzard Divide Road would also be available for access. For timber access, additional local and collector roads would also be built, for a total of 32.7 miles. Stevens Gulch Road, Overland Reservoir Road, Buzzard Divide Road, and Roads 1.1 to 1.5 would remain open to public use. All other local and collector roads would be closed to public use, as would the Hayden-Curecanti Power line Road. A combination of large-volume and slow-volume timber sales would be offered. Spruce-fir timber harvest would be on a 20-year cutting cycle and a 140-year rotation. Aspen timber harvest would be on a 20-year cutting cycle and an 80-year rotation. Over the next decade, timber harvest would reach 25.6 million board feet on 4826 acres. Arterial road building and rebuilding costs would be approximately $1.6 million, and the cost of administering timber sales would be $113.4 thousand. The incremental cost/benefit ratio is 1.83.

Not Available

1985-08-01

278

Investigations on the Structure Tectonics, Geophysics, Geochemistry, and Hydrocarbon Potential of the Black Mesa Basin, Northeastern Arizona  

SciTech Connect

The U.S. Department of Energy (DOE) has instituted a basin-analysis study program to encourage drilling in underexplored and unexplored areas and increase discovery rates for hydrocarbons by independent oil companies within the continental United States. The work is being performed at the DOE's National Institute for Petroleum and Energy Research (NIPER) in Bartlesville, Oklahoma, by the Exploration and Drilling Group within BDM-Oklahoma (BDM), the manager of the facility for DOE. Several low-activity areas in the Mid-Continent, west, and southwest were considered for the initial study area (Reeves and Carroll 1994a). The Black Mesa region in northwestern Arizona is shown on the U.S. Geological Survey 1995 oil and gas map of the United States as an undrilled area, adapted from Takahashi and Gautier 1995. This basin was selected by DOE s the site for the initial NIPER-BDM survey to develop prospects within the Lower-48 states (Reeves and Carroll 1994b).

Barker, Colin; Carroll, Herbert; Erickson, Richard; George, Steve; Guo, Genliang; Reeves,T.K.; Sharma, Bijon; Szpakiewicz, Michael; Volk, Len

1999-04-27

279

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

280

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

281

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

SciTech Connect

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.

Franczyk, K.J.

1988-01-01

282

14. View of interior, north and east walls featuring sink, ...  

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

14. View of interior, north and east walls featuring sink, facing east (Note: B/W scale on wall in foreground is in 1/2 ft increments) - Nevada Test Site, Reactor Maintenance & Disassembly Complex, Junior Hot Cell, Jackass Flats, Area 25, South of intersection of Roads F & G, Mercury, Nye County, NV

283

Study of coherent and continuous terahertz wave emission in equilateral triangular mesas of superconducting Bi2Sr2CaCu2O8+? intrinsic Josephson junctions  

NASA Astrophysics Data System (ADS)

We report on intense and coherent terahertz (THz) electromagnetic (EM) waves emitted from equilateral triangular mesa structures of the intrinsic Josephson junctions (IJJs) in single crystalline high-Tc superconducting Bi2Sr2CaCu2O8+?. The focused ion beam milling technique is used for mesa fabrication. THz radiation is observed when the emission frequency is in the vicinity of the primary cavity resonance frequency determined by the mesa geometry. We also investigated numerically the THz radiation from such mesas using the finite difference time domain method. We found an apparent EM mode similar to the known TM(1, 0) = TM(0, 1) cavity mode during the THz emission.

Delfanazari, Kaveh; Asai, Hidehiro; Tsujimoto, Manabu; Kashiwagi, Takanari; Kitamura, Takeo; Yamamoto, Takashi; Sawamura, Masashi; Ishida, Kazuya; Tachiki, Masashi; Klemm, Richard A.; Hattori, Toshiaki; Kadowaki, Kazuo

2013-08-01

284

MENALIB: Middle East Virtual Library  

NSDL National Science Digital Library

A collaborative venture of more than a half dozen international libraries, MENALIB is coordinated by the University and State Library Saxony-Anhalt, Halle in an attempt to combine contributors' resources into a virtual library of materials on the Middle East and North Africa. The library's primary goals are to create a subject guide for electronic resources in the areas of Middle Eastern and Islamic studies, a current contents service for scholarly journals, a virtual catalog, and databases for dissertations and conferences. The site currently contains ALMISBAH, a searchable and browseable (by source type and subject) database of Internet resources, and the classification scheme of the special subject collection (in German and English).

2000-01-01

285

1. 728732 East Madison, southeast view of 700 block East ...  

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

1. 728-732 East Madison, southeast view of 700 block East Madison Street, 728 East Madison Street is first building on the right Hugh Foshee, Photographer, March 1980 - Phoenix Hill Historic District, 728 East Madison Street (House), Louisville, Jefferson County, KY

286

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

287

53. VIEW SHOWING GRAFFITI ON EAST WALL OF STAIRWELL INSIDE ...  

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

53. VIEW SHOWING GRAFFITI ON EAST WALL OF STAIRWELL INSIDE 'CATFISH' SILO Everett Weinreb, photographer, April 1988 - Mount Gleason Nike Missile Site, Angeles National Forest, South of Soledad Canyon, Sylmar, Los Angeles County, CA

288

5. TIP TOP MINE. EAST SIDE OF STRUCTURE WITH COLLAPSED ...  

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

5. TIP TOP MINE. EAST SIDE OF STRUCTURE WITH COLLAPSED ADIT. CAMERA POINTED WEST. - Florida Mountain Mining Sites, Tip Top Mine, West face Florida Mountain, approximately 150 feet below summit, Silver City, Owyhee County, ID

289

2. TIP TOP MINE. NORTH AND EAST SIDE OF HOUSE. ...  

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

2. TIP TOP MINE. NORTH AND EAST SIDE OF HOUSE. CAMERA POINTED SOUTH. - Florida Mountain Mining Sites, Tip Top Mine, West face Florida Mountain, approximately 150 feet below summit, Silver City, Owyhee County, ID

290

Interior view to the east of an empty computer room ...  

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

Interior view to the east of an empty computer room - Over-the-Horizon Backscatter Radar Network, Christmas Valley Radar Site Transmit Sector Six Transmitter Building, On unnamed road west of Lost Forest Road, Christmas Valley, Lake County, OR

291

View of EPA Farm metal weather tower, facing east, showing ...  

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

View of EPA Farm metal weather tower, facing east, showing thirty-acre irrigated field - Nevada Test Site, Environmental Protection Agency Farm, Weather Tower, Area 15, Yucca Flat, 10-2 Road near Circle Road, Mercury, Nye County, NV

292

28. ELEVATION LOOKING EAST, ORIGINAL MARCONI ANTENNA POLES WERE 300' ...  

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

28. ELEVATION LOOKING EAST, ORIGINAL MARCONI ANTENNA POLES WERE 300' TALL (AT LEAST TWICE THE HEIGHT OF THOSE APPEARING IN PICTURE). - Marconi Radio Sites, Transmitting, Point Reyes Station, Marin County, CA

293

11. Relationship of barn, east tool shed, west tool shed, ...  

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

11. Relationship of barn, east tool shed, west tool shed, and residence to overall farmstead site, looking southeast - George Spangerberger Farmstead, 2012 West Illinois Avenue, South Hutchinson, Reno County, KS

294

16. VIEW OF FIRST FLOOR EAST OPERATING GALLERY. NOTE THE ...  

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

16. VIEW OF FIRST FLOOR EAST OPERATING GALLERY. NOTE THE SERIES OF MANIPULATOR ARMS ALONG THE LEFT WALL. - Nevada Test Site, Engine Maintenance Assembly & Disassembly Facility, Area 25, Jackass Flats, Mercury, Nye County, NV

295

15. INTERIOR VIEW TO THE EAST OF ROOM 102, A ...  

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

15. INTERIOR VIEW TO THE EAST OF ROOM 102, A MACHINE SHOP ADJACENT TO ASSEMBLY BAY NO. 1. - Nevada Test Site, Reactor Maintenance Assembly & Dissassembly Facility, Area 25, Jackass Flats, Junction of Roads F & G, Mercury, Nye County, NV

296

10. VIEW WITHIN THE EAST OPERATING GALLERY OF WORK STATION ...  

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

10. VIEW WITHIN THE EAST OPERATING GALLERY OF WORK STATION WITH MANIPULATOR ARMS. - Nevada Test Site, Engine Maintenance Assembly & Disassembly Facility, Area 25, Jackass Flats, Mercury, Nye County, NV

297

4. EXTERIOR VIEW TO THE EAST OF THE WEST ELEVATION ...  

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

4. EXTERIOR VIEW TO THE EAST OF THE WEST ELEVATION OF THE COLD ASSEMBLY AREA. - Nevada Test Site, Reactor Maintenance Assembly & Dissassembly Facility, Area 25, Jackass Flats, Junction of Roads F & G, Mercury, Nye County, NV

298

8. EXTERIOR VIEW TO THE WEST OF THE EAST ELEVATION ...  

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

8. EXTERIOR VIEW TO THE WEST OF THE EAST ELEVATION OF THE HOT DISASSEMBLY AREA. - Nevada Test Site, Reactor Maintenance Assembly & Dissassembly Facility, Area 25, Jackass Flats, Junction of Roads F & G, Mercury, Nye County, NV

299

2. INTERIOR VIEW TO THE EAST OF THE FIRST FLOOR ...  

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

2. INTERIOR VIEW TO THE EAST OF THE FIRST FLOOR AND SHIELDING WALL OF THE CONTAINMENT BUILDING. - Nevada Test Site, Super Kukla Facility, Containment Building, Area 27, Rock Valley, South of Cane Spring Road, Mercury, Nye County, NV

300

1. EXTERIOR VIEW TO THE EAST OF THE ENTRANCE TO ...  

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

1. EXTERIOR VIEW TO THE EAST OF THE ENTRANCE TO THE SUBSURFACE CONTAINMENT BUILDING. - Nevada Test Site, Super Kukla Facility, Containment Building, Area 27, Rock Valley, South of Cane Spring Road, Mercury, Nye County, NV

301

View of EPA Farm Sioux silo, facing east. Radsafe trailer ...  

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

View of EPA Farm Sioux silo, facing east. Rad-safe trailer is to the left - Nevada Test Site, Environmental Protection Agency Farm, Silo Type, Area 15, Yucca Flat, 10-2 Road near Circle Road, Mercury, Nye County, NV

302

MIDDLE EAST CANCER CONSORTIUM  

Cancer.gov

MIDDLE EAST CANCER CONSORTIUM 1 Cancer Registry Steering Committee Hilton Hotel Istanbul, Turkey, March 29, 2007 Joe Harford . Dr The NCI’s Vision of the MECC program :00 10 - :00 9 . A • Management and support

303

Estimate of tilt instability of mesa-beam and Gaussian-beam modes for advanced LIGO  

SciTech Connect

Sidles and Sigg have shown that advanced LIGO interferometers will encounter a serious tilt instability, in which symmetric tilts of the mirrors of an arm cavity cause the cavity's light beam to slide sideways, so its radiation pressure exerts a torque that increases the tilt. Sidles and Sigg showed that the strength T of this torque is 26.2 times greater for advanced LIGO's baseline cavities - nearly flat spherical mirrors which support Gaussian beams (FG cavities), than for nearly concentric spherical mirrors which support Gaussian beams (CG cavities) with the same diffraction losses as the baseline case: T{sup FG}/T{sup CG}=26.2. This has motivated a proposal to change the baseline design to nearly concentric, spherical mirrors. In order to reduce thermal noises in advanced LIGO, O'Shaughnessy and Thorne have proposed replacing the spherical mirrors and their Gaussian beams by ''Mexican-Hat'' (MH) shaped mirrors which support flat-topped, mesa shaped beams. In this paper, we compute the tilt-instability torque for advanced-LIGO cavities with nearly flat MH mirrors and mesa beams (FM cavities) and nearly concentric MH mirrors and mesa beams (CM cavities), with the same diffraction losses as in the baseline FG case. We find that the relative sizes of the restoring torques are T{sup CM}/T{sup CG}=0.91, T{sup FM}/T{sup CG}=96, T{sup FM}/T{sup FG}=3.67. Thus, the nearly concentric MH mirrors have a weaker tilt instability than any other configuration. Their thermoelastic noise is the same as for nearly flat MH mirrors, and is much lower than for spherical mirrors.

Savov, Pavlin; Vyatchanin, Sergey [Theoretical Astrophysics, California Institute of Technology, Pasadena, California (United States); Physics Department, Moscow State University, Moscow (Russian Federation)

2006-10-15

304

Regionalization in East Asia  

Microsoft Academic Search

Institutional regionalization has come very late to East Asia compared with Europe, but its pace has dramatically increased\\u000a since the mid-1990s. Many agreements, including bilateral ones such as those signed between Japan and Singapore, or pluri-lateral\\u000a ones such as those between ASEAN countries, cover an ever increasing number of countries of the East Asian region, including\\u000a Japan, India, and China.

Michel Fouquin

2008-01-01

305

The Middle East  

Microsoft Academic Search

The Middle East currently produces more than a fifth of the world's oil output, yet still holds two-thirds of world published proved liquid oil reserves. The first part of the book reviews the structural evolution and stratigraphic development of the Middle East region, between Pre-Cambrian-Infra Cambrian and the Cenozoic. The second part provides a country-by-country survey of producing fields, unproduced

Beydoun

1988-01-01

306

East Timor's nonviolent resistance  

Microsoft Academic Search

When people think of East Timor they usually have images of a former Portuguese backwater that glimpsed self?determination from a brief decolonization program before plunging into a full scale civil war in August 1975. The victory of Fretilin—a coalition of political interests ranging from ‘Christian democrats’ to Maoist revolutionaries, caused the other major party—the Democratic Union of East Timor (UDT),

Michael Salla

1995-01-01

307

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

SciTech Connect

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).

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

2011-02-01

308

Constraining Uncertainty in the Application of a Landscape Evolution Model to Predict 1000 Years of Erosion at a Mesa-top Waste Repository  

NASA Astrophysics Data System (ADS)

A landscape evolution model (SIBERIA) is being applied to assess long term erosion of cap designs proposed for eventual closure of a waste disposal area atop a mesa, under the design requirement that waste remain buried beneath a prescribed minimum thickness of cap material at 1000 years. Here we describe a first-cut at constraining uncertainty in the landscape evolution model, so that predicted erosion rates are realistic within the bounds of the likely physical conditions at the site. A profile-based hillslope erosion, sediment transport, and erosion model (HEM) which has been subject to extensive validation on rangeland conditions is used to simulate sediment yield on hillslope profiles under a range of conditions that promote high, moderate, and low erosion rates. HEM uses a small set of parameters, including canopy- and ground-coverage, slope, and soil properties along the profiles, data for which are easily obtained in the field. Such a field dataset has been developed for profiles on disturbed and undisturbed hillslopes on the mesa and on an existing closure cap. The profiles included canopy- and ground-cover conditions which encompass the range of conditions expected to be present during the evolution of the ecosystem on the closure cap. A series of 64 HEM simulations were run with parameters obtained from the field dataset and properties of two soil types chosen to represent cap material properties on profile geometries constructed using a range of slopes. SIBERIA parameters were chosen so that resulting sediment yields on the profiles were bounded by the extremes of the HEM field based simulations. This represents a first step in assessing uncertainty in the application of SIBERIA as a predecessor to a more formal uncertainty analysis. LA-UR-6329

Crowell, K. J.; Wilson, C. J.; Lane, L. J.

2004-12-01

309

Strain relief and dislocation motion in III-nitride films grown on stepped and step-free 4H-SiC mesas  

NASA Astrophysics Data System (ADS)

The impetus for dislocation motion in thin films is generally understood in terms of Peach-Koehler forces. For the case of III-nitride films grown on step-free 4H-SiC mesas, however, it is the gradient of the strain energy from the mesa edge that is capable of driving misfit dislocations. Using the strain profile as a function of the distance from the mesa edge and the line tension of the c-plane threading arms, we have calculated the excess stress driving the half loop from the mesa edge into the mesa interior. We have also compared the half-loop excess stress with the excess stress driving the tilt of threading edge dislocations, which has been proposed as one of the principal strain relief mechanisms in III-nitride films. The excess stress driving c-plane half loops ranges from a few 1000 MPa at the mesa edge to few 100 MPa towards the mesa interior, while the excess stress driving the tilt of threading edge dislocations is in excess of 20 000 MPa. The greater excess stress driving dislocation tilt, however, does not dominate strain relief for III-nitride films on step-free SiC mesas due to the difficulty in nucleating threading dislocations in the absence of interfacial steps.

Twigg, M. E.; Bassim, N. D.; Mastro, M. A.; Eddy, C. R.; Henry, R. L.; Culbertson, J. C.; Holm, R. T.; Neudeck, P.; Powell, J. A.; Trunek, A. J.

2007-03-01

310

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

NASA Astrophysics Data System (ADS)

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.

Flores, Ramon

311

East Asia's Recovery Gathering Force: An Update  

NSDL National Science Digital Library

The latest World Bank regional brief describes East Asia's recovery from the 1997 economic crisis as "remarkable," but cautions that the region is still susceptible to another downturn. Presented by Masahiro Kawai, the bank's chief economist for East Asia and the Pacific, the 116-page report notes several signs of improvement, including high rates of economic growth, rising employment and labor earnings, increasing foreign investment, lower interest rates, and recovering currencies. The East Asian countries, Kawai concludes in the press release, "can at last return to the medium term development agenda," assisted, of course, by the World Bank. Users can download the full text of the report by section or in its entirety at the World Bank site.

312

Long-Term Exposure to Airborne Particles and Arterial Stiffness: The Multi-Ethnic Study of Atherosclerosis (MESA)  

PubMed Central

Background Increased arterial stiffness could represent an intermediate subclinical outcome in the mechanistic pathway underlying associations between average long-term pollution exposure and cardiovascular events. Objective We hypothesized that 20 years of exposure to particulate matter (PM) ? 2.5 and 10 ?m in aerodynamic diameter (PM2.5 and PM10, respectively) would be positively associated with arterial stiffness in 3,996 participants from the Multi-Ethnic Study of Atherosclerosis (MESA) who were seen at six U.S. study sites. Methods We assigned pollution exposure during two decades preceding a clinical exam (2000–2002) using observed PM10 from monitors nearest participants’ residences and PM10 and PM2.5 imputed from a space-time model. We examined three log-transformed arterial stiffness outcome measures: Young’s modulus (YM) from carotid artery ultrasound and large (C1) and small (C2) artery vessel compliance from the radial artery pulse wave. All associations are expressed per 10 ?g/m3 increment in PM and were adjusted for weather, age, sex, race, glucose, triglycerides, diabetes, waist:hip ratio, seated mean arterial pressure, smoking status, pack-years, cigarettes per day, environmental tobacco smoke, and physical activity. C1 and C2 models were further adjusted for heart rate, weight, and height. Results Long-term average particle exposure was not associated with greater arterial stiffness measured by YM, C1, or C2, and the few associations observed were not robust across metrics and adjustment schemes. Conclusions Long-term particle mass exposure did not appear to be associated with greater arterial stiffness in this study sample.

O'Neill, Marie S.; Diez-Roux, Ana V.; Auchincloss, Amy H.; Shen, Mingwu; Lima, Joao A.; Polak, Joseph F.; Barr, R. Graham; Kaufman, Joel; Jacobs, David R.

2011-01-01

313

Predicted Geology of the Pahute Mesa-Oasis Valley Phase II Drilling Initiative  

SciTech Connect

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.

NSTec Environmental Restoration

2009-04-20

314

Evolution of antibiotic resistance on a mesa-shaped fitness landscape  

NASA Astrophysics Data System (ADS)

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.

Hermsen, Rutger; Hwa, Terence

2010-03-01

315

Women's self-efficacy perceptions in mathematics and science: Investigating USC-MESA students  

NASA Astrophysics Data System (ADS)

This study is an investigation into female high school seniors in the USC-MESA program and how the role of self-efficacy perceptions in mathematics and science relates to their college major choice. Bandura's theory on self-efficacy provides the backdrop for this study. This study is qualitative and takes an ethnographic approach incorporating 23 interviews, 2 focus groups, 49.5 hours of observation, and document analysis. Results show that female high school seniors participating in the USC-MESA program demonstrate a strong self-efficacy perception in mathematics and science through their academic choices and pursuits in high school and beyond. This finding confirms a linear approach in understanding how courses taken in high school contribute to the trajectory of college academic choices. It also challenges the theory of self-efficacy in math and science to examine historically underrepresented populations in the field and the external factors that play a key role in their persistence to pursue STEM fields in college and beyond.

Hong, Rebecca Cheng-Shun

316

Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona--2003-04  

USGS Publications Warehouse

The N aquifer is the major source of water in the 5,400-square-mile area of Black Mesa in northeastern Arizona. Availability of water is an important issue in this area because of continued industrial and municipal use, a growing population, and precipitation of about 6 to 14 inches per year. The monitoring program in the Black Mesa area has been operating since 1971 and is designed to determine the long-term effects of ground-water withdrawals from the N aquifer for industrial and municipal uses. The monitoring program includes measurements of (1) ground-water pumping, (2) ground-water levels, (3) spring discharge, (4) surface-water discharge, (5) ground-water chemistry, and (6) periodic testing of ground-water withdrawal meters. In 2003, total ground-water withdrawals were 7,240 acre-feet, industrial withdrawals were 4,450 acre-feet, and municipal withdrawals were 2,790 acre-feet. From 2002 to 2003, total withdrawals decreased by 10 percent, industrial withdrawals decreased by 4 percent, and municipal withdrawals decreased by 20 percent. Flowmeter testing was completed for 24 municipal wells in 2004. The median difference between pumping rates for the permanent meter and a test meter for all the sites tested was -2.9 percent. Values ranged from -10.9 percent at Forest Lake NTUA 1 to +7.8 percent at Rough Rock NTUA 2. From 2003 to 2004, water levels declined in 6 of 12 wells in the unconfined part of the aquifer, and the median change was -0.1 foot. Water levels declined in 7 of 11 wells in the confined part of the aquifer, and the median change was -2.7 feet. From the prestress period (prior to 1965) to 2003, the median water-level change for 26 wells was -23.2 feet. Median water-level change were -6.1 feet for 14 wells in the unconfined parts of the aquifer and and -72.1 feet for 12 wells in the confined part. Discharges were measured once in 2003 and once in 2004 at four springs. Discharge stayed the same at Pasture Canyon Spring, increased 9 percent at Moenkopi Spring, decreased 26 percent at an unnamed spring near Dennehotso, and decreased 50 percent at Burro Spring. For the past 12 years, discharges from the four springs have fluctuated; however, an increasing or decreasing trend is not apparent. Continuous records of surface-water discharge have been collected from 1976 to 2003 at Moenkopi Wash, 1996 to 2003 at Laguna Creek, 1993 to 2003 at Dinnebito Wash, and 1994 to 2003 at Polacca Wash. Median flows for November, December, January, and February of each water year were used as an index of ground-water discharge to those streams. Since 1995, the median winter flows have decreased for Moenkopi Wash, Dinnebito Wash, and Polacca Wash. Since the first continuous record of surface-water discharge in 1997, there is no consistent trend in the median winter flow for Laguna Creek. In 2004, water samples were collected from 12 wells and 4 springs and analyzed for selected chemical constituents. Dissolved-solids concentrations ranged from 100 to 649 milligrams per liter. Water samples from 11 of the wells and from all the springs had less than 500 milligrams per liter of dissolved solids. There are no appreciable time trends in the chemistry of water samples from 7 wells and 2 springs; increasing trends in dissolved-solids and chloride concentrations were evident from the more than 10 years of data for 2 springs.

Truini, Margot; Macy, Jamie P.; Porter, Thomas J.

2005-01-01

317

The Middle East  

SciTech Connect

The Middle East currently produces more than a fifth of the world's oil output, yet still holds two-thirds of world published proved liquid oil reserves. The first part of the book reviews the structural evolution and stratigraphic development of the Middle East region, between Pre-Cambrian-Infra Cambrian and the Cenozoic. The second part provides a country-by-country survey of producing fields, unproduced discoveries, and future reserves as well as a summary of the main producing basins and formations in the region.

Beydoun, Z.R. (American Univ., Beirut (LB))

1988-01-01

318

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

319

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

320

12. VIEW EAST, ROUTE 30 EAST FROM ROUTE 130 SOUTH ...  

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

12. VIEW EAST, ROUTE 30 EAST FROM ROUTE 130 SOUTH ISLAND - White Horse Pike Rond Point, Intersection of Crescent Boulevard (U.S. Route 130), White Horse Pike (U.S. Route 30), & Clay Avenue, Collingswood, Camden County, NJ

321

2. VIEW SOUTHEAST, ROUTE 30 EAST FROM ROUTE 30 EAST ...  

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

2. VIEW SOUTHEAST, ROUTE 30 EAST FROM ROUTE 30 EAST ISLAND - White Horse Pike Rond Point, Intersection of Crescent Boulevard (U.S. Route 130), White Horse Pike (U.S. Route 30), & Clay Avenue, Collingswood, Camden County, NJ

322

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

323

Detail east panel of east truss showing rollling panels and ...  

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

Detail east panel of east truss showing rollling panels and counter weights. View south - New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Lift Bridge, Spanning Fort Point Channel, Boston, Suffolk County, MA

324

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

325

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

326

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

327

East wing. Elevation of east side along Presidio Avenue, as ...  

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

East wing. Elevation of east side along Presidio Avenue, as seen from the rooftop of the Laurel Inn across the street. - Jewish Community Center of San Francisco, 3200 California Street, San Francisco, San Francisco County, CA

328

Comments on Anthony Bruton, Miguel Garcia Lopez, and Raquel Esquiliche Mesa's "Incidental L2 Vocabulary Learning: An Impracticable Term?"  

ERIC Educational Resources Information Center

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…

Reynolds, Barry Lee

2012-01-01

329

New material of Dinochelys whitei Gaffney, 1979, from the Dry Mesa Quarry (Morrison Formation, Jurassic) of Colorado  

Microsoft Academic Search

A specimen of a juvenile individual of Dinochelys from the Dry Mesa Quarry, Morrison Formation, provides the first record of the skull and neck in this genus. Dinochelys is interpreted as related to Glyptops on the basis of a similar development of sculpture on the vertebral scutes of juvenile individuals, and a similar development of a beak on the premaxilla

Donald B. Brinkman; Ken Stadtman; David Smith

2000-01-01

330

Computer Simulations of Edge Effects in a Small-Area Mesa N-P Junction Diodes: Preprint  

SciTech Connect

In this work, computer simulations are used to determine the influence of edge conditions on the overall performance of mesa diodes under dark and illuminated conditions. In particular, we examine the effect of edge shape on the I-V characteristics of the diode.

Appel, J.; Sopori, B.; Ravindra, N. M.

2009-02-01

331

Computer Simulations of Edge Effects in a Small-Area Mesa N-P Junction Diodes: Preprint.  

National Technical Information Service (NTIS)

In this work, computer simulations are used to determine the influence of edge conditions on the overall performance of mesa diodes under dark and illuminated conditions. In particular, we examine the effect of edge shape on the I-V characteristics of the...

B. Sopori J. Appel N. M. Ravindra

2009-01-01

332

Ethnographic and epidemiologic approaches for the programming of prenatal and birth services in Mesa los Hornos, Mexico  

Microsoft Academic Search

The investigator conducted an action-oriented investigation of pregnancy and birth among the women of Mesa los Hornos, an urban squatter slum in Mexico City. Three aims guided the project: (1) To obtain information for improving prenatal and maternity service utilization; (2) To examine the utility of rapid ethnographic and epidemiologic assessment methodologies; (3) To cultivate community involvement in health development.^

Richard Andre Danko

1991-01-01

333

Predicting and mitigating weed invasions to restore natural post-fire succession in Mesa Verde National Park, Colorado, USA  

Microsoft Academic Search

Six large wildfires have burned in Mesa Verde National Park during the last 15 years, and extensive portions of burns were invaded by non-native plant species. The most threatening weed species include Carduus nutans, Cirsium arvense, and Bromus tectorum, and if untreated, they persist at least 13 years. We investigated patterns of weed distribution to identify plant communities most vulnerable

M. Lisa FloydA; David HannaA; William H. RommeB; Timothy E. CrewsA

2006-01-01

334

The effect of dissolution of volcanic glass on the water chemistry in a tuffaceous aquifer, Rainier Mesa, Nevada  

USGS Publications Warehouse

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.

White, Art F.; Claassen, H. C.; Benson, Larry V.

1980-01-01

335

HELMINTH INFRACOMMUNITY STRUCTURE OF THE SYMPATRIC GARTER SNAKES THAMNOPHIS EQUES AND THAMNOPHIS MELANOGASTER FROM THE MESA CENTRAL OF MEXICO  

Microsoft Academic Search

Seventy-two Mexican garter snakes (Thamnophis eques) and 126 black-bellied garter snakes (T. melanogaster) were collected from 4 localities of the Mesa Central of Mexico between July 1996 and February 1998 and examined for helminths. Both species of garter snakes occurred sympatrically in every locality except in Lake Cuitzeo. Both species of snakes shared 9 helminth species, and in general, T.

F. Agustín Jiménez-Ruiz; Luis García-Prieto; Gerardo Pérez-Ponce de León

2002-01-01

336

A neglected magma: constraining the volatile content and pre-eruptive conditions of the Peridot Mesa basanite  

Microsoft Academic Search

Peridot Mesa, famous for its xenoliths of spinel-bearing peridotite (Frey and Prinz, 1978) and gem quality peridot (Wrucke et al. 2004), is located in the Basin and Range province, near the San Carlos Reservation in south-eastern Arizona. While the literature abounds with studies of the mantle xenoliths, little is understood of the monogenetic eruption and basanitic lava that brought these

A. L. Gullikson; G. M. Moore; K. Roggensack

2010-01-01

337

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

338

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

339

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

340

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

341

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

342

50. View looking east. East bay is on the left. ...  

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

50. View looking east. East bay is on the left. The dismantling of the last crib. Note the identifying tags nailed to the crib sidewalls. Foundation timbers and the outline of the crib structure are visible in the foreground. - Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent to U.S. Route 24, New Haven, Allen County, IN

343

Understanding the Middle East.  

ERIC Educational Resources Information Center

|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…

Owen, Evelyn C.

344

Intellectuals east and west  

Microsoft Academic Search

S the controversies sparked by a recent book by Paul Johnson (Intellectuals) indicate, the essential attributes and proper public roles of intellectuals remain in dispute. A comparison of intellectuals in the East and West may help to settle some of these matters and shed more light on the key characteristics of this group as they appear in somewhat different incarnations

Paul Hollander

1990-01-01

345

East Texas Storytellers.  

ERIC Educational Resources Information Center

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…

Anderson, Brandi, Ed.

1987-01-01

346

Understanding the Middle East.  

ERIC Educational Resources Information Center

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…

Owen, Evelyn C.

347

East Texas Quilts.  

ERIC Educational Resources Information Center

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…

Whiteside, Karen, Ed.

1986-01-01

348

Test Well, East River  

USGS Multimedia Gallery

USGS test well 10 34h363 in the East River, Brunswick, Ga. The U.S. Geological Survey drilled this test well in the early 1970's and at the time it was on the edge of the marsh at Andrews Island. It is now only accessible by boat or canoe at high tide. Despite being surrounded by saltwater the artes...

2008-12-04

349

Development of a StrengthsQuest-based Online Orientation Course for the Mathematics Engineering Science Achievement (MESA) Program  

NASA Astrophysics Data System (ADS)

MESA Programs have been established in over 30 community colleges in California. A critical component of the Program is the development of a course that helps new students in the community college and MESA environment to adjust to both college life and begin preparing for a professional career in the math- or science-based fields. To date, programs have developed an eclectic mix of courses to orient their students to their programs and to the college. This includes actual college courses that are credit or non-credit, usually 1 or 2 college units, as well as others that are offered only from within their MESA program that meet several times during the students’ first semester in the MESA Program. At College of the Desert (COD), a one unit orientation course was developed and approved by the Curriculum committee and was offered for the first time in Fall 2001. This class met once per week and consisted of several activities to help the student succeed and provided an opportunity for them to investigate future careers.. A StrengthsQuest assessment was added to this course in Fall 2004 and more and more of the course was impacted by the knowledge that the students gained about themselves from the assessment. One ongoing problem that was experienced with this course was scheduling a time so most of the new students could attend this important class at the beginning of their participation in the MESA Program. A pilot program to offer an online orientation course has been implemented at COD for the past two semesters that utilizes the StrengthsQuest as the initial student assessment and provides several experiences that build on those results. An outline of the components of the course will be presented and its potential will be discussed.

Farmer, J.

2009-12-01

350

Superfund Record of Decision (EPA Region 8): East Helena, MT. (First Remedial Action), November 1989.  

National Technical Information Service (NTIS)

The 80-acre East Helena site, in East Helena, Lewis and Clark County, Montana, is a primary lead smelting facility that has been in operation since 1888. Prickly Pear Creek flows near the site and has been found to contain elevated levels of arsenic and l...

1989-01-01

351

Software Requirements Specification: Multi-scale Epidemiological and Economic Simulation and Analysis (MESA) Scenario Bank  

SciTech Connect

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.

Dahlgren, T L; Hazlett, S G; Slone, D M; Smith, S G

2006-11-08

352

Analytical Model for Obtaining the Ionization Rate Ratio of Mesa InAlAs Avalanche Photodiodes  

NASA Astrophysics Data System (ADS)

We proposed a new analytical model to extract the effective ionization rate ratio k from the measured multiplication noise of Avalanche photodiodes (APDs). In this model, k was expressed as a function of the multiplication factor M. We extracted the effective k of the mesa-structured InAlAs APDs using this model. A measurement system that consisted of a low-noise differential preamplifier was developed for this purpose, leading to the measurements of the noise data, particularly in the region where it was small. APD noise data could be fitted to the curve based on this new analytical model better than with other analytical models over the wide range of M. The effective k in the region where M was small became appropriate using this model. The quantum efficiency of the APDs was also found to be reasonable compared with the results obtained using the other analytical models.

Takeshi Nakata,; Kenichi Kasahara,; Kikuo Makita,

2010-05-01

353

Simulation of mesa structures for III-V semiconductors under ion beam etching  

NASA Astrophysics Data System (ADS)

An argon Ion Beam Etching (IBE) simulation model has been developed to investigate the mesa profile evolution in III-V semiconductors' technology. Particular attention has been focused on the sputtering yield angular dependence effect, on the influence of the material and 2D-morphology of the mask onto the pattern transfer. Experimental sputtering yield versus ion incidence angle is injected into the simulation model. The equations which govern the surface evolution, stem from the current method of characteristics. The simulated profiles show that the trenching phenomenon can appear by only considering the variation of the sputtering yield versus the etched surface canting. This is obtained when neither the ion reflection nor the electric field line deviation are taken into account. On the other hand, the slope transfer from the mask to the GaAs and InP substrates is studied.

Houlet, L.; Rhallabi, A.; Turban, G.

1999-06-01

354

Core drilling provides information about Santa Fe Group aquifer system beneath Albuquerque's West Mesa  

USGS Publications Warehouse

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.

Allen, B. D.; Connell, S. D.; Hawley, J. W.; Stone, B. D.

1998-01-01

355

Japanese Studies Resources: Duke University East Asian Collection  

NSDL National Science Digital Library

Kristina Kade Troost, East Asian Librarian at Duke, has constructed an excellent collection of resources for Japanese Studies. This site describes resources available at Duke and through the Internet, including encyclopedias, general and subject bibliographies, word and name dictionaries, periodical and newspaper indexes and holdings, library and book catalogs, East Asian collections in the US, related web sites, and Japan-related discussion lists. The guide covers both English and Japanese language resources and special software is necessary to decode the Japanese. This is a rich, detailed, and easy to navigate site that serves as an excellent starting point for any search for Japanese resources on the Internet.

356

Endothelial dysfunction is associated with left ventricular mass (assessed using MRI) in an adult population (MESA).  

PubMed

Brachial flow-mediated dilation (FMD) is a measure of endothelial nitric oxide bioavailability. Endothelial nitric oxide controls vascular tone and is likely to modify the ventricular muscle coupling mechanism. The association between left ventricular mass and FMD is not well understood. We assessed the association between left ventricular mass index (LVMI) and FMD in participants of the Multi-Ethnic Study of Atherosclerosis (MESA). MESA is a population-based study of 6814 adults free of clinical cardiovascular disease at baseline who were recruited from six US clinics. LVMI (left ventricular mass per body surface area) and FMD were measured in 2447 subjects. Linear regression analysis was used to evaluate the association. The subjects had a mean age of 61.2±9.9 years, 51.2% females with 34.3% Caucasians, 21.6% Chinese, 19.4% African Americans and 24.7% Hispanics. The mean body mass index (BMI) was 27.4±4.8?kg?m?², 9.4% had diabetes, 11% were current smokers and 38% hypertensives. The mean±s.d. LVMI was 78.1±15.9?g?m?² and mean±s.d. FMD was 4.4%±2.8%. In univariate analysis, LVMI was inversely correlated with FMD (r= -0.20, P<0.0001). In the multivariable analysis, LVMI was associated with FMD (? coefficient (se) = -0.50 (0.11), P<0.001 (0.5?g?m?² reduction in LVMI per 1% increase in FMD)) after adjusting for age, gender, race/ethnicity, systolic blood pressure, diabetes mellitus, smoking, weight, statin use, antihypertensive medication use, high-density lipoprotein (HDL) and low-density lipoprotein (LDL) cholesterol. The association between brachial flow mediated dilation and LVMI maybe independent of traditional CV risk factors in population based adults. PMID:20237502

Yeboah, J; Crouse, J R; Bluemke, D A; Lima, J A C; Polak, J F; Burke, G L; Herrington, D M

2010-03-18

357

The Relationship of Left Ventricular Mass and Geometry to Incident Cardiovascular Events: The MESA Study  

PubMed Central

Objective The purpose of this study was to evaluate the relationship of left ventricular mass and geometry measured with cardiac MRI to incident cardiovascular events in the Multi-Ethnic Study of Atherosclerosis (MESA) study. Background MRI is highly accurate for evaluation of heart size and structure and has not previously been used in a large epidemiologic study to predict cardiovascular events. Methods 5098 participants in the MESA study underwent cardiac MRI at the baseline examination and were followed for a median of 4 years. Cox proportional hazard models were constructed to predict the endpoints of coronary heart disease (CHD), stroke and heart failure (HF) after adjustment for cardiovascular risk factors. Results 216 incident events were observed during the follow-up period. In adjusted models, the endpoints of incident CHD and stroke were positively associated with increased left ventricular mass to volume ratio (coronary heart disease, hazard ratio 2.1 per g/ml, p = 0.02; stroke, hazard ratio 4.2 per g/ml, p =0.005). In contrast, left ventricular mass showed the strongest association with incident HF events (hazard ratio 1.4 per 10% increment, p < 0.0001). HF events occurred primarily in participants with left ventricular hypertrophy, i.e.,? 95th percentile of left ventricular mass (hazard ratio 8.6, confidence interval, 3.7 – 19.9, reference group <50th percentile of LV mass). Conclusions Left ventricular size was related to incident HF, stroke and CHD in this multi-ethnic cohort. While body-size adjusted left ventricular mass alone predicted incident HF, concentric ventricular remodeling predicted incident stroke and CHD.

Bluemke, David A.; Kronmal, Richard A.; Lima, Joao A.C.; Liu, Kiang; Olson, Jean; Burke, Gregory L.; Folsom, Aaron R.

2009-01-01

358

High resolution seismic imaging of Rainier Mesa using surface reflection and surface to tunnel tomography  

SciTech Connect

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.

Majer, E.L.; Johnson, L.R.; Karageorgi, E.K.; Peterson, J.E.

1994-06-01

359

1. Pamorana of Daniel F. Waters Germantown Dye Works site ...  

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

1. Pamorana of Daniel F. Waters Germantown Dye Works site (with the former Hinckley Knitting Mills in the foreground) from Germantown Avenue looking east. - Daniel F. Waters Germantown Dye Works, 37-55 East Wister Street, Philadelphia, Philadelphia County, PA

360

Petroleum habitat of East Siberia, Russia  

SciTech Connect

East Siberia comprises three petroleum provinces - Lena-Tunguska, Lena-Vilyuy, and Yenisey-Anabar - that occupy the area of the Siberian craton. Petroleum has been generated and has accumulated in Precambrian rifts beneath the sedimentary basins and, more importantly, within the section of the basin itself. The platformal deposits of the basins extend beneath overthrusts on the east and south and are covered by sedimentary rocks of the West Siberian province on the west. Permafrost and gas hydrate deposits are present throughout most of East Siberia. In the Lena-Tunguska province, rifts that developed during Riphean time are filled by thick sedimentary rocks, in which petroleum deposits have formed. In Early Cambrian time a barrier reef extended across the East Siberian craton from southeast to northwest. A lagoon to the west of this reef was the site of thick rhythmic salt deposits, which are the main seals for petroleum in the province. The sedimentary sections of the platform cover ranges in age from Late Proterozoic to Permian. More than 25 oil and gas fields have been discovered in the province, all in Riphean through Lower Cambrian rocks. 17 refs., 7 figs.

Clarke, J.W. [Geological Survey, Reston, VA (United States)

1994-03-01

361

The East Village  

NSDL National Science Digital Library

Internauts with time and bandwidth to spare might want to try out the new cyber soap opera from Marinex Multimedia, The East Village. In addition to photographs and audio and video clips, this soap allows you to join the "cyber clique" of a favorite character (after registering, of course). Once in a "clique," you will receive "secret email" from that character that gives you information not in the story line. Chat rooms are also available.

362

The East Siberia Transect  

Microsoft Academic Search

The new East Siberia transect, constructed by synthesizing recently analyzed geological and geophysical data, runs in a broken line through the vicinities of the towns of Nizhneangarsk, Chita, and Borzya, traversing the Siberian Platform margin and the Baikal and Mongolia-Okhotsk fold areas. The transected region encompasses a number of terranes, most of which once were arc-trench systems with fore-arc and

Yu. A. Zorin; V. G. Belichenko; E. Kh. Turutanov; A. M. Mazukabzov; E. V. Sklyarov; V. V. Mordvinova

1995-01-01

363

East Asian observations  

NASA Astrophysics Data System (ADS)

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.

Stephenson, F. R.

364

Coulomb blockade and dot size in split-gate wire with a small mesa or a hole made by scanning tunneling microscopy  

NASA Astrophysics Data System (ADS)

Coulomb blockade effects and related dot sizes of a two-dimensional electron gas (2DEG) are investigated in split-gate quantum wires with a mesa or a hole made by scanning tunneling microscopy (STM). From the dependencies on front (split)- and back-gate voltages, the smallest size of the 2DEG dot under the mesa is found to be limited by the mesa size itself giving stable Coulomb gaps. In a wire with a hole, Coulomb oscillations modulated by random telegraph signal (RTS) oscillation were observed. This suggests the coexistence of a “dot” and electron traps both probably created via STM fabrication. The “dot” was found to be larger than in the mesa case and to be unstable due to the interaction between the “dot” and traps.

Yamada, Syoji; Kikutani, Tomoyuki; Yamamoto, Masafumi

1996-07-01

365

Determination of proportionality in two-part models and analysis of Multi-Ethnic Study of Atherosclerosis (MESA).  

PubMed

In MESA (Multi-Ethnic Study of Atherosclerosis), it is of interest to model the development and progression of CAC (coronary artery calcium). With about half of the CAC scores equal to zero and the rest continuously distributed, semiparametric two-part models are needed. Our main interest lies in determining the (partial) proportionality between the two covariate effects in two-part models. Such an investigation can provide important information on the mechanisms underlying CAC development. We propose a novel approach, which consists of penalized maximum likelihood estimation and a step-wise hypothesis testing procedure to determine proportionality. Simulation shows satisfactory performance of the proposed approach. Analysis of MESA suggests that proportionality holds for all covariates except LDL and HDL. PMID:23772262

Liu, Anna; Kronmal, Richard; Zhou, Xiaohua; Ma, Shuangge

2011-10-01

366

Applications of Geophysical and Geological Techniques to Identify Areas for Detailed Exploration in Black Mesa Basin, Arizona  

SciTech Connect

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.

George, S.; Reeves, T.K.; Sharma, Bijon; Szpakiewicz, M.

1999-04-29

367

Determination of proportionality in two-part models and analysis of Multi-Ethnic Study of Atherosclerosis (MESA)  

PubMed Central

In MESA (Multi-Ethnic Study of Atherosclerosis), it is of interest to model the development and progression of CAC (coronary artery calcium). With about half of the CAC scores equal to zero and the rest continuously distributed, semiparametric two-part models are needed. Our main interest lies in determining the (partial) proportionality between the two covariate effects in two-part models. Such an investigation can provide important information on the mechanisms underlying CAC development. We propose a novel approach, which consists of penalized maximum likelihood estimation and a step-wise hypothesis testing procedure to determine proportionality. Simulation shows satisfactory performance of the proposed approach. Analysis of MESA suggests that proportionality holds for all covariates except LDL and HDL.

Liu, Anna; Kronmal, Richard; Zhou, Xiaohua

2013-01-01

368

IDEAL Symposium on the East African Lakes  

NASA Astrophysics Data System (ADS)

A vast array of interdisciplinary problems presented by the African Great Lakes were highlighted at the International Symposium on the Limnology, Climatology and Paleoclimatology of the East African Lakes, organized by the International Decade for the East African Lakes (IDEAL) February 17-21 in Jinja, Uganda. Approximately 125 scientists attended from North America, Europe, Africa, and New Zealand. Jinja is located on the northern shore of Lake Victoria at the head-waters of the Nile and is the site of the host institution for the symposium, the Uganda Freshwater Fisheries Research Organization (UFFRO). The conveners of the symposium were Tom Johnson of Duke University, George Kitaka of UNESCO-ROSTA, and Eric Odada of the University of Nairobi.

Johnson, T. C.; Kelts, K.; Lehman, J. T.; Wuest, A.

369

East Mountain Area 1995 air sampling results  

SciTech Connect

Ambient air samples were taken at two locations in the East Mountain Area in conjunction with thermal testing at the Lurance Canyon Burn Site (LCBS). The samples were taken to provide measurements of particulate matter with a diameter less than or equal to 10 micrometers (PM{sub 10}) and volatile organic compounds (VOCs). This report summarizes the results of the sampling performed in 1995. The results from small-scale testing performed to determine the potentially produced air pollutants in the thermal tests are included in this report. Analytical results indicate few samples produced measurable concentrations of pollutants believed to be produced by thermal testing. Recommendations for future air sampling in the East Mountain Area are also noted.

Deola, R.A. [Sandia National Labs., Albuquerque, NM (United States). Air Quality Dept.

1996-09-01

370

Unocal schedules field development off East Kalimantan  

SciTech Connect

Unocal Indonesia Ltd. has let a turnkey contract to PT Gema SemBrown (GSB) to build a platform to set in the deepest water yet off Indonesia. This paper reports on the contract, which is worth more than $40 million, and calls for GSB to engineer, procure, fabricate, install, and hook up Unocal's SA drilling and production platform in 335 ft of water in Serang field. Site is in Makassar Strait, about 25 miles off East Kalimantan. GSB in October began fabricating the Serang SA platform at its Sunda Strait fabrication yard in West Java, Indonesia. GSB is to complete the platform on a fast track schedule in time for installation in July 1993. The project includes two export trunk lines connecting Serang field with Unocal's Melahin field. Production will come ashore at Santan on East Kalimantan.

Not Available

1992-12-07

371

Principal facts for new gravity stations in the Pahute Mesa and Oasis Valley areas, Nye County, Nevada  

SciTech Connect

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.

Davidson, J.G.; Hildenbrand, T.G.; Mankinen, E.A.; Roberts, C.W.

1998-12-15

372

Mineral resources of the Indian Creek, Bridger Jack Mesa, and Butler Wash Wilderness Study Areas, San Juan County, Utah  

SciTech Connect

The Indian Creek, Bridger Jack Mesa, and Butler Wash Wilderness Study Areas are located in San Juan County, southeastern Utah. These areas consist of nearly flat-lying sedimentary rocks of Paleozoic and Mesozoic age that are in places extensively faulted, forming horsts and grabens, or they are gently domed by flowage of the bedded salts of the Paradox Member of the Hermosa Formation. Inferred subeconomic resources of potash and halite are present in the Paradox beneath the Indian Creek Wilderness Study Area, but their likelihood for development is low. Inferred subeconomic resources of sandstone and small amounts of sand and gravel exist within these wilderness study areas, but because of their abundance throughout the region, their distance to current markets, and their lack of unique properties, these materials have no current likelihood for development. No uranium resources were identified at the surface in these wilderness study areas. However, the potential for undiscovered resources of uranium and by-products vanadium and copper is high for the north quarter of the Bridger Jack Mesa Wilderness Study Area; the mineral resource potential for these elements is low for the Butler Wash, Indian Creek and the remainder of the Bridger Jack Mesa Wilderness Study Areas. The potential for oil and gas resources is moderate in all three wilderness study areas. The mineral resource potential for potash and halite beneath the Bridger Jack Mesa and Butler Wash Wilderness Study Areas is low. The resource potential for gold and silver is low in all three wilderness study areas and the mineral resource potential for the rare-earth element braitschite is unknown in all three wilderness study areas.

Patterson, C.G.; Toth, M.I.; Case, J.E.; Barton, H.N.; Green, G.N.; Schreiner, R.A.; Thompson, J.R.

1989-01-01

373

Piezoresistive response induced by piezoelectric charges in n-type GaAs mesa resistors for application in stress transducers  

NASA Astrophysics Data System (ADS)

The resistance change due to piezoelectric charge densities in n-GaAs mesa resistors has been studied as a function of surface stress. Those changes are verified by measuring some realized stress transducers with such resistors fabricated on the surface of micromachined thin GaAs membranes or GaInP/GaAs cantilever beams. It is shown here that the surface stresses induced by the deformation of cantilever beams can cause nonuniform stress distributions within the resistors, and the stress gradients consequently yield considerable piezoelectric charge densities that lead to an appreciable resistance change. In addition, this effect of piezoelectric charges is examined from several types of resistors that have a different doping, direction, thickness h, and width-to-thickness ratio L/h. According to those results, optimization of this mechanism is related to the doping and geometrical design of GaAs mesa resistors. In addition to the effect of piezoelectric charges, mobility change can affect the resistance as well. The resistance changes observed from the low doped resistors exhibit an opposite sign for the resistors oriented along [011] and [011] directions. These directional-dependent characteristics confirm that the effect of piezoelectric charges indeed exists in mesa resistors. Fitting the width-dependent sensitivities measured in experiments allows us to estimate each contribution of these two effects. For the [011] oriented resistors with L/h of 10, and ns of 4.8×1011, the sensitivity of relative resistance change as high as 92.7%/GPa is obtained. Results in this study demonstrate that the resistance change in n-GaAs mesa resistors is attributed to the effects of piezoelectric charges and mobility change. Moreover, GaInP/GaAs material system with its piezoresistive response originated from piezoelectric charges is highly promising in III-V compound semiconductor stress transducers.

Hsu, Y. W.; Lu, S. S.; Chang, P. Z.

1999-01-01

374

Responses of ground water in the Black Mesa basin, northeastern Arizona, to paleoclimatic changes during the late Pleistocene and Holocene  

Microsoft Academic Search

Paleorecharge and paleo-ground-water flow patterns are reconstructed for the past 31 k.y. for the N aquifer in the Black Mesa basin, northeastern Arizona, by 14C dating of groundwater and numerical simulation of ground-water flow and 14C transport. Paleorecharge rates varied significantly and correlate with 18O and D records of paleotemperatures in the N aquifer waters as well as other proxy

Chen Zhu; Richard K. Waddell Jr.; Ira Star; Murray Ostrander

1998-01-01

375

Radiological survey and evaluation of the fallout area from the Trinity test: Chupadera Mesa and White Sands Missile Range, New Mexico  

SciTech Connect

Current radiological conditions were evaluated for the site of the first nuclear weapons test, the Trinity test, and the associated fallout zone. The test, located on White Sands Missile Range, was conducted as part of the research with nuclear materials for the World War II Manhattan Engineer District atomic bomb project. Some residual radioactivity attributable to the test was found in the soils of Ground Zero on White Sands Missile Range and the areas that received fallout from the test. The study considered relevant information including historical records, environmental data extending back to the 1940s, and new data acquired by field sampling and measurements. Potential exposures to radiation were evaluated for current land uses. Maximum estimated doses on Chupadera Mesa and other uncontrolled areas are less than 3% of the DOE Radiation Protection Standards (RPSs). Radiation exposures during visits to the US Army-controlled Ground Zero area are less than 1 mrem per annual visit or less than 0.2% of the RPS for a member of the public. Detailed data and interpretations are provided in appendixes. 14 figs., 45 tabs.

Hansen, W.R.; Rodgers, J.C.

1985-06-01

376

East and Southeast Asia: An Annotated Directory of Internet Resources  

NSDL National Science Digital Library

Maintained by the Asian Studies program at the University of Redlands, this easy-to-navigate directory allows users to access annotated links by country and by political, historical, and cultural topics. The site specifies seventeen East and Southeast Asian countries and hundreds of specific subjects, including sections on academic and library research sites. The homepage also offers direct links to current "hot topics," such as the crackdown on Falun Gong, the Asian financial crisis, the famine in North Korea, and East Timor's "Road to Independence." Frequently link-checked and updated, this is an excellent place to begin preliminary research on the region.

Eng, Robert Y.

377

Siting study for a consolidated waste capability at Los Alamos National Laboratory  

SciTech Connect

Decision analysis was used to rank alternative sites for a potential Consolidated Waste Capability (CWC) to replace current hazardous solid waste operations (hazardous/chemical, mixed low-level, transuranic, and low-level waste) at Los Alamos National Laboratory's Technical Area (TA)-54. An original list of 21 site alternatives was pre-screened to seven sites that were assessed using the analytical hierarchy process with five top-level criteria and fifteen sub-criteria. The top site choice is TA-63/52/46; the second choice is TA-18/36. The seven sites are as follows. TA-18/36 (62 acres) is located on Potrillo Drive that intersects Pajarito Road at the bottom of a steep grade. It has some blast zone issues on its southwest side and some important archeological sites on the southeast section. TA-60 (50 acres) is located at the end of Eniwetok Road off Diamond Drive, east of TA-3. Most of the site is within a fifty foot-deep ravine (that may have contamination in the drainage), with a small section on the mesa above. TA-63/52/46 (110 acres) lies to the north of Pajarito Road along Puye Road. It is centrally located in a brown field industrial area, with good access to generators on a controlled road. TA-46 (22 acres) is a narrow site on the south side of Pajarito Road across from TA-46 office buildings. TA-48 (14 acres) is also narrow, and is located on the north side of Pajarito Road near the west vehicle access portal (VAP). TA-51 (19 acres) is located on the south side of Pajarito Road at the top of the hill above TA-18 near the current entrance to the TA-54. TA-54 West (16 acres) is just north of the entrance to TA-54 at Pajarito Road and is close to Zone 4. Although it is near the San Ildefonso Pueblo property line, there may be adequate set-back for sight screening.

Booth, Steven Richard [Los Alamos National Laboratory

2010-11-05

378

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

379

6. VIEW EAST, GIRDER SPAN GENERAL CONFIGURATION, EAST SIDE, SOUTH ...  

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

6. VIEW EAST, GIRDER SPAN GENERAL CONFIGURATION, EAST SIDE, SOUTH OF SOUTH PORTAL - Route 1 Extension, Structure No. 0703-161, Spanning Conrail-Newark & New York Industrial tracks, Richards Lane, & Hawkins Street at Routes 1 & 9 Southbound, Newark, Essex County, NJ

380

Interior, first floor, east side of building, looking east along ...  

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

Interior, first floor, east side of building, looking east along north wall. Renovation eliminated walls and corridor along north wall. - Fitzsimons General Hospital, Assembly Hall School, Northeast Corner of West McCloskey Avenue & North Tenth Street, Aurora, Adams County, CO

381

Signs of subclinical coronary atherosclerosis in relation to risk factor distribution in the Multi-Ethnic Study of Atherosclerosis (MESA) and the Heinz Nixdorf Recall Study (HNR)  

PubMed Central

Aims Modern imaging technology allows us the visualization of coronary artery calcification (CAC), a marker of subclinical coronary atherosclerosis. The prevalence, quantity, and risk factors for CAC were compared between two studies with similar imaging protocols but different source populations: the Multi-Ethnic Study of Atherosclerosis (MESA) and the Heinz Nixdorf Recall Study (HNR). Methods and results The measured CAC in 2220 MESA participants were compared with those in 3126 HNR participants with the inclusion criteria such as age 45–75 years, Caucasian race, and free of baseline cardiovascular disease. Despite similar mean levels of CAC of 244.6 among participants in MESA and of 240.3 in HNR (P = 0.91), the prevalence of CAC > 0 was lower in MESA (52.6%) compared with HNR (67.0%) with a prevalence rate ratio of CAC > 0 of 0.78 [95% confidence interval (CI): 0.72–0.85] after adjustment for known risk factors. Consequently, among participants with CAC > 0, the participants in MESA tended to have higher levels of CAC than those in HNR (ratio of CAC levels: 1.39; 95% CI: 1.19–1.63), since many HNR participants have small (near zero) CAC values. Conclusions The CAC prevalence was lower in the United States (MESA) cohort than in the German (HNR) cohort, which may be explained by more favourable risk factor levels among the MESA participants. The predictors for increased levels of CAC were, however, similar in both cohorts with the exception that male gender, blood pressure, and body mass index were more strongly associated in the HNR cohort.

Erbel, Raimund; Delaney, Joseph A.C.; Lehmann, Nils; McClelland, Robyn L.; Mohlenkamp, Stefan; Kronmal, Richard A.; Schmermund, Axel; Moebus, Susanne; Dragano, Nico; Stang, Andreas; Jockel, Karl-Heinz; Budoff, Matthew J.

2008-01-01

382

K East canister sludge survey  

SciTech Connect

Sludge depths were measured in 60 selected canisters in the K East Basin. The projected K East basin total canister sludge inventory based on these measurements is 3 cubic meters. After sludge samples were extracted from 12 canisters, the sludge depth measurements were repeated to confirm adequate sample volumes had been obtained to perform prescribed analytical and testing activities.

Pitner, A.L., Westinghouse Hanford

1996-08-01

383

Educational Development in East Timor  

ERIC Educational Resources Information Center

|This paper examines educational development in East Timor. It is particularly concerned with the period between October 1999 and May 2002 when the country was governed by the United Nations Transitional Administration in East Timor (UNTAET). The paper argues that UNTAET missed an important opportunity to implement the transformation in education…

Millo, Yiftach; Barnett, Jon

2004-01-01

384

Can East Asia rise again?  

Microsoft Academic Search

In recent times, the economies of East Asia have been confronted by two major economic recessions, the first caused by the East Asian financial crisis, and the second by the slump in the ‘new economy.’ The causes of these two recessions, their scope and their influences differ significantly and during these periods of economic downturn the economies affected have adopted

Tzong-Shian Yu

2003-01-01

385

Feminism in the Middle East  

Microsoft Academic Search

There is a history of feminism that is rooted in the Middle East. And there is a future. Patriarchy, tradition and religious conservatism in the area have led women to struggle for emancipation and equality on many levels. This ethnographic research study in the Middle East gives voice to a young generation of women who reveal their own unique brand

Catherine K. Kikoski

2000-01-01

386

Evaluation of permeability in the unsaturated zone at the Nevada Test Site using barometric pressure modeling  

Microsoft Academic Search

A total of 130 days of barometric pressure data were recorded at the Nevada Test Site emplacement holes U2fe, completed in Area 2 alluvium, and U19ac and U20ai, completed in volcanics on Pahute Mesa, for the purpose of evaluating unsaturated-zone permeability at those sites. All of the holes were partially cased and instrumented with high-precision quartz pressure gauges suspended on

J. M. Hanson; J. R. Hearst

1985-01-01

387

East Asian astronomical records  

NASA Astrophysics Data System (ADS)

Chinese, Japanese and Korean celestial observations have made major contributions to Applied Historical Astronomy, especially in the study of supernovae, comets, Earth's rotation (using eclipses) and solar variability (via sunspots and aurorae). Few original texts now survive; almost all extant records exist only in printed versions, often with the loss of much detail. The earliest Chinese astronomical observations extend back to before 1000 BC. However, fairly systematic records are only available since 200 BC - and even these have suffered losses through wars, etc. By around AD 800, many independent observations are available from Japan and Korea and these provide a valuable supplement to the Chinese data. Throughout East Asia dates were expressed in terms of a luni-solar calendar and conversion to the Julian or Gregorian calendar can be readily effected.

Stephenson, F. Richard

388

The East Asian Collection  

NSDL National Science Digital Library

The University of Wisconsin Digital Collections initiative continues to surprise and delight visitors to their collections. Their latest offering is certainly no different; it includes historical images that present a visual archive of 20th century East Asian cultural heritage. The collection is actually comprised of two subcollections, namely the Holmes Welch Collection and the China in the 30s Collection. Holmes Welch was a scholar of modern Chinese religions whose family donated his library of primary photographic materials of religious life in China and Hong Kong to the University of Wisconsin after he died in 1981. The China in the 1930s Collection contains a number of images connected with the military, which are mostly associated with the Japanese invasion of China and the Sino-Japanese Conflict.

389

3. East and north elevations, facing southwest (Note: B/W scale ...  

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

3. East and north elevations, facing southwest (Note: B/W scale on east elevation in 1/2 ft increments) - Nevada Test Site, Reactor Maintenance & Disassembly Complex, Junior Hot Cell, Jackass Flats, Area 25, South of intersection of Roads F & G, Mercury, Nye County, NV

390

Cultural Resources Assessment of Confederate Pinto Battery Later Renamed Battery Gladden, Battery Gladden Lighthouse, Alabama Site Number 1M617 and the Adjacent Areas on or Near Pinto Island on the East Side of Mobile River, Mobile County, Alabama.  

National Technical Information Service (NTIS)

Battery Gladden is a Civil War fortification first known as Battery Pinto, located in Mobile Bay, Alabama. The site as it exists today consists of a pattern of pilings barely exposed above the water level of the Bay. The report consists of a chronological...

1983-01-01

391

46. HISTORIC AERIAL VIEW LOOKING EAST AT THE REDSTONE TEST ...  

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

46. HISTORIC AERIAL VIEW LOOKING EAST AT THE REDSTONE TEST SITE, SHOWING THE TEST STAND, SUPPORT EQUIPMENT, SERVICE AREA AND THE OBSERVATION TANKS BURIED BENEATH THE EARTH MOUND IN THE BACKGROUND. - Marshall Space Flight Center, Redstone Rocket (Missile) Test Stand, Dodd Road, Huntsville, Madison County, AL

392

1. VIEW, LOOKING FROM THE EAST, OF THE GOLD KNOLL ...  

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

1. VIEW, LOOKING FROM THE EAST, OF THE GOLD KNOLL SITE. MILL FOUNDATIONS ARE AT CENTER, WITH REMAINS OF THE TRESTLE ABOVE. WASTE DUMP FROM THE SHAFT IS AT LEFT - Gold Knoll Mill, Southern Edge of Salt Spring Valley, Copperopolis, Calaveras County, CA

393

3. VIEW EAST OF MILL STREET BUILDINGS; 20 AT EXTREME ...  

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

3. VIEW EAST OF MILL STREET BUILDINGS; 20 AT EXTREME LEFT CENTER; 21 AT MID-LEFT CENTER; 4 AT LEFT CENTER; RUNDBOGENSTIL TOWER AT CENTER; BUILDING 3 RIGHT CENTER; BUILDING 2 AT EXTREME RIGHT CENTER; BUILDING 3 IS THE OLDEST BUILDING ON SITE AND WAS BUILT CIRCA 1850 - Scovill Brass Works, 59 Mill Street, Waterbury, New Haven County, CT

394

1. VIEW OF SILVER CITY WITH EAST SIDE OF FLORIDA ...  

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

1. VIEW OF SILVER CITY WITH EAST SIDE OF FLORIDA MOUNTAIN IN BACKGROUND. CAMERA POINTED WEST. (THE SNOW BANK IN THE SADDLE SERVES AS AN ORIENTATION/RELATIONSHIP POINT AND IS INCLUDED IN PHOTOGRAPH ID-31-G-1.) - Florida Mountain Mining Sites, Silver City, Owyhee County, ID

395

View from east to west of family housing unit (twobedroom ...  

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

View from east to west of family housing unit (two-bedroom duplex; #48A & 48B). This structure was located on 8th Street south. No housing sites remain on the ground - Stanley R. Mickelsen Safeguard Complex, Family Housing Units, In area bounded by Tenth Street North, Avenue A, & Avenue J, Nekoma, Cavalier County, ND

396

16. View of east side of transmitter building no. 102 ...  

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

16. View of east side of transmitter building no. 102 looking south with TR radome in upper right of photograph and DR 2 antenna in left of photograph. - Clear Air Force Station, Ballistic Missile Early Warning System Site II, One mile west of mile marker 293.5 on Parks Highway, 5 miles southwest of Anderson, Anderson, Denali Borough, AK

397

A Plio-Pleistocene hominid from Dmanisi, East Georgia, Caucasus  

Microsoft Academic Search

ARCHAEOLOGICAL excavations at the mediaeval site of Dmanisi (East Georgia) revealed that the town was built on a series of deposits yielding Late Villafranchian mammalian fossils and led to the discovery in late 1991 of a well preserved early human mandible. Dmanisi, where excavations are being carried out by a joint expedition of the Archaeological Research Centre of the Georgian

L. Gabunia; A. Vekua

1995-01-01

398

New Aerogeophysical exploration of the Gamburtsev Province (East Antarctica)  

Microsoft Academic Search

The enigmatic Gamburstev Subglacial Mountains (GSM) in the interior of East Antarctica, have remained the least understood mountain range on earth, since their discovery some 50 years ago. An improved knowledge of the GSM region is however essential to underpin reconstructions of the Antarctic cryosphere and climate evolution. The GSM are a key nucleation site for the inception of the

F. Ferraccioli; R. E. Bell; M. Studinger; D. Damaske; T. A. Jordan; H. Corr; D. A. Braaten; P. S. Gogineni; M. A. Fahnestock; C. Finn; K. Rose

2009-01-01

399

1. GENERAL VIEW OF BUILDING 149, SHOWING EAST AND SOUTH ...  

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

1. GENERAL VIEW OF BUILDING 149, SHOWING EAST AND SOUTH SIDES; BUILDING 162 IS VISIBLE AT FAR LEFT; BUILDING 181 IS VISIBLE AT RIGHT; OPEN AREA AT RIGHT CENTER WAS SITE OF LIVESTOCK HOLDING BUILDINGS - Rath Packing Company, Beef Killing Building, Sycamore Street between Elm & Eighteenth Streets, Waterloo, Black Hawk County, IA

400

17. INTERIOR VIEW TO THE EAST OF ROOM 215, A ...  

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

17. INTERIOR VIEW TO THE EAST OF ROOM 215, A SECOND FLOOR OFFICE ABOVE ROOM 137 IN THE COLD ASSEMBLY AREA. - Nevada Test Site, Reactor Maintenance Assembly & Dissassembly Facility, Area 25, Jackass Flats, Junction of Roads F & G, Mercury, Nye County, NV

401

13. VIEW OF EAST OPERATING GALLERY ALONG THE POSTMORTEM CELLS. ...  

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

13. VIEW OF EAST OPERATING GALLERY ALONG THE POST-MORTEM CELLS. A NUMBER OF MANIPULATOR ARMS COVERED WITH PLASTIC ARE ON THE LEFT WALL. - Nevada Test Site, Engine Maintenance Assembly & Disassembly Facility, Area 25, Jackass Flats, Mercury, Nye County, NV

402

9. Closeup of open doors on west elevation, facing east ...  

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

9. Close-up of open doors on west elevation, facing east (Note: B/W scale in doorway is in 1/2 ft increments) - Nevada Test Site, Reactor Maintenance & Disassembly Complex, Junior Hot Cell, Jackass Flats, Area 25, South of intersection of Roads F & G, Mercury, Nye County, NV

403

20. INTERIOR VIEW TO THE EAST OF THE ACCESS RAMP ...  

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

20. INTERIOR VIEW TO THE EAST OF THE ACCESS RAMP TO THE HOT DISASSEMBLY AREA FROM THE COLD ASSEMBLY AREA. - Nevada Test Site, Reactor Maintenance Assembly & Dissassembly Facility, Area 25, Jackass Flats, Junction of Roads F & G, Mercury, Nye County, NV

404

6. INTERIOR VIEW TO THE EAST OF SOUTHEAST CORNER OF ...  

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

6. INTERIOR VIEW TO THE EAST OF SOUTHEAST CORNER OF THE HOT BAY. A LARGE MANIPULATOR ARM AND HORIZONTAL TRACKING SYSTEM IS SHOWN ABOVE SMALLER MANIPULATOR ARM WORK STATIONS. ASSOCIATED WITH THE WORK STATIONS ARE OBSERVATION WINDOWS. - Nevada Test Site, Engine Maintenance Assembly & Disassembly Facility, Area 25, Jackass Flats, Mercury, Nye County, NV

405

17. Photocopy of photograph. VIEW OF WORKERS IN EAST OPERATING ...  

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

17. Photocopy of photograph. VIEW OF WORKERS IN EAST OPERATING GALLERY USING MANIPULATOR ARMS AT STATION E-108. Photographer unknown, ca. 1965, original photograph and negative on file at the Remote Sensing Laboratory, Department of Energy, Nevada Operations Office. - Nevada Test Site, Engine Maintenance Assembly & Disassembly Facility, Area 25, Jackass Flats, Mercury, Nye County, NV

406

18. View from East Rock, c. 1920 Photocopied from a ...  

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

18. View from East Rock, c. 1920 Photocopied from a print from glass negative no. 6476 by Thomas S. Bronson, NHCHSL. An aerial view of the armory site evidently after the row of stone houses for married employees had been torn down. - Eli Whitney Armory, West of Whitney Avenue, Armory Street Vicinity, Hamden, New Haven County, CT

407

General view of Sector Six Compound, looking east. Water Storage ...  

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

General view of Sector Six Compound, looking east. Water Storage Tank is at left - Over-the-Horizon Backscatter Radar Network, Tulelake Radar Site Receive Sector Six Water Storage Plant, Unnamed Road West of Double Head Road, Tulelake, Siskiyou County, CA

408

34. LOW OBLIQUE AERIAL VIEW LOOKING EAST OVER THE FUTURE ...  

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

34. LOW OBLIQUE AERIAL VIEW LOOKING EAST OVER THE FUTURE SITE OF THE NAVAL SUPPLY CENTER TO DOWNTOWN OAKLAND. THE FEDERAL CHANNEL IS AT THE RIGHT. No date, probably mid 1930's. Clyde Sunderland, photographer. Original print on file at the Port of Oakland, California. - Oakland Harbor Training Walls, Mouth of Federal Channel to Inner Harbor, Oakland, Alameda County, CA

409

10. VIEW EAST (93 DEGREES) OF RCA COMMUNICATION RECEIVING STATION. ...  

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

10. VIEW EAST (93 DEGREES) OF RCA COMMUNICATION RECEIVING STATION. WOOD FRAMING SUPPORTED STANDOFF INSULATORS AND ANTENNA WIRES COMING FROM THE FIELD INTO THE BUILDING. BOLT ON FOUNDATION POLES SUPPORTED SATELLITE ANTENNAS, METAL CAP AND POSTS AT LEFT PROTECTED CONDUIT SUPPLYING POWER TO SATELLITE ANTENNA MOTORS. - Marconi Radio Sites, Receiving, Point Reyes Station, Marin County, CA

410

3. View of collapsed structure (type A) next to type ...  

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

3. View of collapsed structure (type A) next to type B structure, facing east-northeast - Nevada Test Site, Japanese Village, Area 4, Yucca Flat, 4-04 Road near Rainier Mesa Road, Mercury, Nye County, NV

411

3. View of Japanese village, type C structure, facing eastsoutheast ...  

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

3. View of Japanese village, type C structure, facing east-southeast - Nevada Test Site, Japanese Village, Type C Structure, Area 4, Yucca Flat, 4-04 Road near Rainier Mesa Road, Mercury, Nye County, NV

412

Right Ventricular Morphology and the Onset of Dyspnea: The MESA-Right Ventricle Study  

PubMed Central

Background The association of right ventricular (RV) structure and function with symptoms in individuals without cardiopulmonary disease is unknown. We hypothesized that greater RV mass and RV end-diastolic volume (RVEDV), smaller RV stroke volume (RVSV), and lower RV ejection fraction (RVEF) measured by cardiac magnetic resonance imaging (MRI) in participants free of clinical cardiovascular disease at baseline would be associated with a greater risk of self-reported dyspnea. Methods The Multi-Ethnic Study of Atherosclerosis (MESA) performed cardiac MRIs on participants without clinical cardiovascular disease between 2000 and 2002. We excluded subjects who reported “prevalent” dyspnea at the first assessment (24 months). The presence of dyspnea was assessed at 24 months, 42 months, and 60 months from baseline. Cox proportional hazards models were used to examine the relationship between RV measures and incident dyspnea. Results In the final study sample (N?=?2763), there were significant interactions between RV measures and sex in terms of the risk of dyspnea (p<0.05). Among men (N?=?1453), lower RV mass (p?=?0.003), smaller RVEDV (p<0.001), smaller RV end-systolic volume (RVESV) (p?=?0.03) and decreased RVSV (p<0.001) were associated with an increased risk of developing dyspnea after adjusting for covariates. Associations remained after adjusting for left ventricular function and lung function. However, there were no significant associations between RV measures and the risk of dyspnea in women. Conclusions Lower RV mass and smaller RV volumes were associated with an increased risk of dyspnea in men, but not in women.

Kaufmann, Michael R.; Barr, R. Graham; Lima, Joao A. C.; Praestgaard, Amy; Jain, Aditya; Tandri, Harikrishna; Bluemke, David A.; Kawut, Steven M.

2013-01-01

413

1884, 1889 & 1893 Site Maps Brookland Site Development ...  

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

1884, 1889 & 1893 Site Maps - Brookland Site Development Study, Brookland, bounded by B&O Railroad Tracks, Rhode Island & Brentwood Avenues on the south, 18th Street & South Dakota Avenue on the east, and Michigan Avenue on the North, Washington, District of Columbia, DC

414

1863, 1880 & 1884 Site Maps Brookland Site Development ...  

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

1863, 1880 & 1884 Site Maps - Brookland Site Development Study, Brookland, bounded by B&O Railroad Tracks, Rhode Island & Brentwood Avenues on the south, 18th Street & South Dakota Avenue on the east, and Michigan Avenue on the North, Washington, District of Columbia, DC

415

Species composition and ecologo-phytocenotic spectra of vascular plants, mosses, and lichens on gold-mining sites in the taiga zone of the lower Amur River basin, the Russian Far East  

Microsoft Academic Search

Two-hundred-three species of vascular plants, 50 species of bryophyte and 41 species of lichens have been found on dredging\\u000a and hydraulic gold-mining sites in the taiga zone of the lower Amur River basin. The main features of the anthropogenic relief\\u000a and vegetation have been described. Dredging and hydraulic dumps are supposed to have the biggest similarity in the species\\u000a composition

S. V. Osipov; V. Ya. Cherdantseva; I. A. Galanina; V. V. Yakubov

2008-01-01

416

12. OOIDS AND SHALLOW-WATER DEBRIS IN APTIAN-ALBIAN SEDIMENTS FROM THE EAST MARIANA BASIN, DEEP SEA DRILLING PROJECT SITE 585: IMPLICATIONS FOR THE ENVIRONMENT OF FORMATION OF THE OOIDS1  

Microsoft Academic Search

DSDP Site 585 was selected for drilling the Central Old Pacific as a relic of the Mesozoic superocean Panthalassa. The basal lithologic unit recovered from Holes 585 and 585A is composed of a thick section of Aptian-Albian volcani- clastic turbidite deposits containing carbonate debris. On the basis of both microstructure and genesis, the carbonate debris consists of various shallow-water skeletal

Janet A. Haggerty

417

In situ measurements of trace gases and aerosol optical properties at a rural site in northern China during East Asian Study of Tropospheric Aerosols: An International Regional Experiment 2005  

Microsoft Academic Search

In situ measurements of trace gases and aerosol optical properties were made in March 2005 at Xianghe (39.798°N, 116.958°E, 35 m), a rural site about 70 km southeast, and generally downwind of the Beijing metropolitan area. High pollutant levels were observed during the experiment, with CO (1.09 +\\/- 1.02 ppmv, average +\\/- standard deviation), SO2 (17.8 +\\/- 15.7 ppbv), NOy

Lackson T. Marufu; Russell R. Dickerson; Zhanqing Li; Tianxue Wen; Yuesi Wang; Pucai Wang; Hongbin Chen; Jeffrey W. Stehr

2007-01-01

418

INTERIOR OF EAST DOOR, SOUTH WALL, AND AISLE LOOKING EAST ...  

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

INTERIOR OF EAST DOOR, SOUTH WALL, AND AISLE LOOKING EAST (This bay of the barn was originally used for livestock. Horse pens and milking stanchions remain. Floor was built with 1/4 inch gaps between the planks to allow air circulation. Photograph also shows the knee-high hinged doors that open for easy removal of manure) - Arnold Farm, Barn, 1948 Arnold Road, Coupeville, Island County, WA

419

15. VIEW LOOKING EAST AT UNDERGROUND VAULT, BUILDING 997, UNDER ...  

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

15. VIEW LOOKING EAST AT UNDERGROUND VAULT, BUILDING 997, UNDER CONSTRUCTION. THE VAULTS WERE USED TO STORE TRIGGERS AWAITING OFF-SITE SHIPMENT, OR RETURNED TRIGGERS AWAITING TO BE TRANSPORTED TO A BUILDING FOR RECOVERY OF THE PLUTONIUM. THE VAULT WALLS WERE CONSTRUCTED 14.5 FEET THICK. BUILDING 991, IN THE BACKGROUND, WAS THE FIRST OPERATIONAL BUILDING ON SITE (2/1/52). - Rocky Flats Plant, Bounded by Indiana Street & Routes 93, 128 & 72, Golden, Jefferson County, CO

420

Simulated heat-exchanger tubes: DOE Geothermal Test Facility, East Mesa, California. Corrosion test report. [Allegheny-Ludlum Alloy 29-4 and Alloy 29-4C  

Microsoft Academic Search

A 1032-hr corrosion test was made of two geothermal heat exchanger materials, Allegheny-Ludlum Alloy 29-4 and Alloy 29-4C. Coupons of the two metals were exposed under conditions simulating flow in a geothermal heat exchanger tube. Continuous flow and cyclic exposure tests were made. No signs of localized corrosion were observed in either the base metal, tube weld seam, or heat

P. F. II Ellis; D. M. Anliker

1982-01-01

421

Tourism in East Central Florida.  

National Technical Information Service (NTIS)

This report summarizes a research effort to project tourism as an industry in East Central Florida and present such key planning factors as employment, population supported, retail sales, motel and restaurant data and total investment. The approach used i...

1969-01-01

422

Sumo: East and West  

NSDL National Science Digital Library

Often misrepresented outside of its home country, the physically intense sport of sumo is revered by the Japanese and is also a part of the Shinto religion. The sport and its changing traditions come under the documentary lens of filmmakers Ferne Pearlstein and Robert Edwards as they spent four years examining the sport for the Independent Lens series on PBS. Visitors to the site can learn about the different wrestlers profiled in the film, the transformation of the sport as bigger, heavier American sumo wrestlers from Hawaii have entered the field, and the promotion of sumo wrestling in the United States. One particularly nice feature of the site is an area entitled Sumo Style which allows users to learn more about the sumo wrestler, his garb, and his movements. The site is rounded out by a trailer for the film and a good selection of related websites, such as the American Sumo Association.

423

Genetic admixture is associated with plasma hemostatic factor levels in self-identified African Americans and Hispanics: The Multi-Ethnic Study of Atherosclerosis (MESA)  

PubMed Central

Background Epidemiologic studies report that self-identified African Americans typically have higher hemostatic factor levels than do self-identified Caucasians or Hispanics. Objective To better understand phenotypic variation in hemostatic factor levels by race/ethnicity we evaluated the relationship between genetic ancestry and hemostatic factor levels among MESA study participants. Patients/Methods Our sample included 712 African American and 701 Hispanic men and women aged 45–84. Individual global ancestry was estimated from 199 genetic markers using STRUCTURE. Linear regression models were used to evaluate the relationship between ancestry and hemostatic factor levels, adjusting for age, sex, education, income, and study site. Results Among African Americans, mean±SD ancestry was estimated as 79.9% ± 15.9% African and 20.1% ± 15.9% European. Each SD (16%) greater African ancestry was associated with 2.1% higher fibrinogen levels (p=0.007) and 3.5% higher plasmin-antiplasmin (PAP) levels (p=0.02). Ancestry among African Americans was not related to levels of factor VIII or D-Dimer. Mean±SD estimated ancestry among Hispanics was 48.3% ± 23.8% Native American, 38.8% ± 21.9% European, and 13.0% ±18.9% African. In Hispanics, each SD (19%) greater African ancestry was associated with 2.7% higher fibrinogen levels (p=0.009) and 7.9% higher factor VIII levels (p=0.0002). In Hispanics, there was no relation between African ancestry and D-dimer or PAP levels, or between European ancestry and hemostatic factor levels. Conclusions Greater African ancestry among African Americans and Hispanics was associated with higher levels of several hemostatic factors, notably fibrinogen. These results suggest that genetic heterogeneity contributes, albeit modestly, to racial/ethnic differences in hemostatic factor levels.

Lutsey, PL; Wassel, CL; Cushman, M; Sale, MM; Divers, J; Folsom, AR

2012-01-01

424

The non-proliferation experiment and gas sampling as an on-site inspection activity: A progress report  

SciTech Connect

The Non-proliferation Experiment (NPE) is contributing to the development of gas sampling methods and models that may be incorporated into future on-site inspection (OSI) activities. Surface gas sampling and analysis, motivated by nuclear test containment studies, have already demonstrated the tendency for the gaseous products of an underground nuclear test to flow hundreds of meters to the surface over periods ranging from days to months. Even in the presence of a uniform sinusoidal pressure variation, there will be a net flow of cavity gas toward the surface. To test this barometric pumping effect at Rainier Mesa, gas bottles containing sulfur hexaflouride and {sup 3}He were added to the pre-detonation cavity for the 1 kt chemical explosives test. Pre-detonation measurements of the background levels of both gases were obtained at selected sites on top of the mesa. The background levels of both tracers were found to be at or below mass spectrographic/gas chromatographic sensitivity thresholds in the parts-per-trillion range. Post-detonation, gas chromatographic analyses of samples taken during barometric pressure lows from the sampling sites on the mesa indicate the presence of significant levels (300--600 ppt) of sulfur hexaflouride. However, mass spectrographic analyses of gas samples taken to date do not show the presence of {sup 3}He. To explain these observations, several possibilities are being explored through additional sampling/analysis and numerical modeling. For the NPE, the detonation point was approximately 400 m beneath the surface of Rainier Mesa and the event did not produce significant fracturing or subsidence on the surface of the mesa. Thus, the NPE may ultimately represent an extreme, but useful example for the application and tuning of cavity gas detection techniques.

Carrigan, C.R.

1994-03-01

425

Mitigation action plan for remedial action at the uranium mill tailings sites and disposal site, Rifle, Colorado  

SciTech Connect

The Old and New Rifle sites cover 66 hectares (164 acres) of private land just outside the town of Rifle, in northwestern Colorado. Approximately 3,161,620 cubic meters (4,135,000 cubic yards) of Residual Radioactive Materials (RRM) contaminates the sites and the adjacent land. The tailings piles at both sites have been partially stabilized, seeded, and irrigated to promote a native vegetation cover. In May 1987, the DOE released its draft EIS on remedial actions at the Rifle sites (DOE, 1987) for public comment. The draft EIS analyzed four alternatives, including: No action; Stabilizing all of the RRM at the New Rifle site; Disposal of all of the RRM at the Estes Guich site, which was the preferred alternative; Disposal of all of the RRM at the Lucas Mesa site.

Not Available

1992-12-01

426

Geology of drill hole UE18t and Area 18, Timber Mountain Caldera Moat, Nevada Test Site  

Microsoft Academic Search

Drill hole UE18t, located in the northeastern part of the Timber Mountain Caldera Moat (Area ft Nye County, Nevada, was sited to obtain chemical and physical data of the caldera-fill deposits and to extend knowledge of the geologic and hydrologic environment of the Nevada Test Site. Caldera-fill deposits in the area of subsidence related to eruption of the Rainier Mesa

F. M. Jr. Byers; W. L. Hawkins; D. C. Muller

1981-01-01

427

Effects of wildfires on riparian restoration sites, [electronic resource  

Treesearch

USA.gov Government Made Easy. Publication Information. Bookmark and Share. Title: Effects of wildfires on riparian restoration sites, [electronic resource] ... Prior to the fire, the geology and geomorphology of the East Cedar Creek site had ...

428

Development of Site-Specific Irrigation Research under Linear Move Systems  

Microsoft Academic Search

An off-the-shelf PLC-based control system has been developed and field tested to enable site- specific irrigation of multiple 50 ft X 80 ft research plots using either mid-elevation spray heads (MESA) and low energy precision application (LEPA) irrigation methods on linear move sprinkler systems. Both methods were installed on one machine to cover the same areas whereas the second system

Montana Sidney; Robert G Evans; W. Bart Stevens; William M. Iversen

429

Hydrogeology of the D Aquifer and Movement and Ages of Ground Water Determined from Geochemical and Isotopic Analyses, Black Mesa Area, Northeastern Arizona.  

National Technical Information Service (NTIS)

The Navajo Nation and the Hopi Tribe are concerned that ground-water leakage to the N aquifer from the overlying D aquifer could degrade the quality of water in the N aquifer. Ground water from the N aquifer in the Black Mesa area, northeastern Arizona, i...

M. Truini S. A. Longworth

2003-01-01

430

MeSA and MeJA increase steady-state transcript levels of alternative oxidase and resistance against chilling injury in sweet peppers ( Capsicum annuum L.)  

Microsoft Academic Search

Methyl salicylate (MeSA) and methyl jasmonate (MeJA) vapors increased resistance against chilling injury in freshly harvested green bell pepper (Capsicum annuum L. cv Century). The period within 2 days of cold storage was considered the most critical because chilling injury symptom (surface pitting) was not apparent. The expression patterns of alternative oxidase (AOX) and seven other genes involved in defense

Raymond W. M. Fung; Chien Y. Wang; David L. Smith; Kenneth C. Gross; Meisheng Tian

2004-01-01

431

Elimination of Mesa-Sidewall Gate Leakage in InAlAs/InGaAs Heterostructures by Selective Sidewall Recessing. (Reannouncement with New Availability Information).  

National Technical Information Service (NTIS)

Conventional mesa isolation in InAlAs/InGaAs HFET's results in the gate coming in contact with the exposed channel at the sidewall, forming a parasitic gate-leakage path. We propose and successfully demonstrate a novel and simple method of recessing the c...

S. R. Bahl J. A. del Alamo

1992-01-01

432

Crystal chemistry of clay-Mn oxide associations in soils, fractures, and matrix of the Bandelier Tuff, Pajarito Mesa, New Mexico  

Microsoft Academic Search

The upper 25 m of Bandelier Tuff at Pajarito Mesa, New Mexico, include soils, shallow fractures, deeper fractures, and tuff matrices in which clays provide a record of transport and alteration. The principal pathways within this system are fractures that penetrate the tuff. Large fractures that host deep root penetration provide a setting in which clay deposits accumulate through particulate

D. T. Vaniman; S. J. Chipera; D. L. Bish; M. C. Duff; D. B. Hunter

2002-01-01

433

Requirements for roll-over protective structures and falling object protective structures for surface coal mines and surface areas of underground coal mines. [MESA  

Microsoft Academic Search

The Mining Enforcement and Safety Administration (MESA) has adopted regulations for the requirement of roll-over protective structures (ROPS) and falling object protective structures (FOPS) on all large earth moving equipment used in surface coal mines and surface areas of underground coal mines effective June 28, 1974. The adopted standards include regulations currently employed by the Corps of Engineers, Department of

Hollop

1977-01-01

434

Economic Outlook for East Asia  

NSDL National Science Digital Library

An Institute for Developing Economies (IDE) publication, the 1999 Economic Outlook for East Asia analyzes the East Asian countries in 1998 and presents forecasts for 1999 (in English and Japanese). According to IDE, Thailand and South Korea will begin to see signs of recovery in the coming year, as the impact of the new Miyazawa Initiative is felt, although Hong Kong will remain "afflicted" by recession. Malaysia and Singapore are also expected to recover as will the Philippines, Vietnam, and Taiwan. As a whole, the growth rate for the East Asian economies is predicted to rise to 3.1 percent in 1999 from 0.1 percent, and general prices are forecast to "swing back" to a single-digit inflation rate of 6.6 percent.

1998-01-01

435

Dust transport from non-East Asian sources to the North Pacific  

NASA Astrophysics Data System (ADS)

It is generally thought that East Asia dominates the supply of eolian dust to the North Pacific. Here we show the first data-based evidence of dust primarily from non-East Asian sources even during March 2010 when a super dust storm from East Asia struck the western Pacific. Chemical characteristics of aerosol samples collected at a high-mountain site in Taiwan show variable inputs from eolian dust and biomass burning. From backward trajectory analyses, satellite observation and model simulation, dust origins can be traced to the Middle East and North Africa, suggesting an integrated source from the global dust belt. Our global model results demonstrate that dust deposition in the North Pacific is primarily contributed by non-East Asian sources with an eastward decrease along the Westerlies.

Hsu, Shih-Chieh; Huh, Chih-An; Lin, Chuan-Yao; Chen, Wei-Nai; Mahowald, Natalie M.; Liu, Shaw-Chen; Chou, C. C. K.; Liang, Mao-Chang; Tsai, Chuen-Jinn; Lin, Fei-Jan; Chen, Jen-Ping; Huang, Yi-Tang

2012-06-01

436

Ancient Near East and the Mediterranean World  

NSDL National Science Digital Library

Sponsored by the University of Chicago Library and funded by the National Endowment for the Humanities, this online project contains numerous primary materials related to the study of the ancient Near East and covers topics ranging from archaeology; art history; language; law; and the religions of Sumer, Babylonia, Assyria, Egypt, Nubia, and Persia. Currently, the project includes full-text editions of 33 seminal works in the field, including works on Greek athletics and the exploration of Palestine during the first decade of the 20th century. For those seeking to read them in their language of origin, several of the texts are also available in the original French and German. This site will be of great interest to persons hoping to look through primary research texts, but find themselves unable to make a trip to the University of Chicago Library.

437

Strontium Isotopic Composition of Paleozoic Carbonate Rocks in the Nevada Test Site Vicinity, Clark, Lincoln, and Nye Counties, Nevada and Inyo County, California.  

SciTech Connect

Ground water moving through permeable Paleozoic carbonate rocks represents the most likely pathway for migration of radioactive contaminants from nuclear weapons testing at the Nevada Test Site, Nye County, Nevada. The strontium isotopic composition (87Sr/86Sr) of ground water offers a useful means of testing hydrochemical models of regional flow involving advection and reaction. However, reaction models require knowledge of 87Sr/86Sr data for carbonate rock in the Nevada Test Site vicinity, which is scarce. To fill this data gap, samples of core or cuttings were selected from 22 boreholes at depth intervals from which water samples had been obtained previously around the Nevada Test Site at Yucca Flat, Frenchman Flat, Rainier Mesa, and Mercury Valley. Dilute acid leachates of these samples were analyzed for a suite of major- and trace-element concentrations (MgO, CaO, SiO2, Al2O3, MnO, Rb, Sr, Th, and U) as well as for 87Sr/86Sr. Also presented are unpublished analyses of 114 Paleozoic carbonate samples from outcrops, road cuts, or underground sites in the Funeral Mountains, Bare Mountain, Striped Hills, Specter Range, Spring Mountains, and ranges east of the Nevada Test Site measured in the early 1990's. These data originally were collected to evaluate the potential for economic mineral deposition at the potential high-level radioactive waste repository site at Yucca Mountain and adjacent areas (Peterman and others, 1994). Samples were analyzed for a suite of trace elements (Rb, Sr, Zr, Ba, La, and Ce) in bulk-rock powders, and 87Sr/86Sr in partial digestions of carbonate rock using dilute acid or total digestions of silicate-rich rocks. Pre-Tertiary core samples from two boreholes in the central or western part of the Nevada Test Site also were analyzed. Data are presented in tables and summarized in graphs; however, no attempt is made to interpret results with respect to ground-water flow paths in this report. Present-day 87Sr/86Sr values are compared to values for Paleozoic seawater present at the time of deposition. Many of the samples have 87Sr/86Sr compositions that remain relatively unmodified from expected seawater values. However, rocks underlying the northern Nevada Test Site as well as rocks exposed at Bare Mountain commonly have elevated 87Sr/86Sr values derived from post-depositional addition of radiogenic Sr most likely from fluids circulating through rubidium-rich Paleozoic strata or Precambrian basement rocks.

James B. Paces; Zell E. Peterman; Kiyoto Futa; Thomas A. Oliver; and Brian D. Marshall.

2007-08-07

438

Strontium Isotopic Composition of Paleozoic Carbonate Rocks in the Nevada Test Site Vicinity, Clark, Lincoln, and Nye Counties, Nevada, and Inyo County, California  

USGS Publications Warehouse

Ground water moving through permeable Paleozoic carbonate rocks represents the most likely pathway for migration of radioactive contaminants from nuclear weapons testing at the Nevada Test Site, Nye County, Nevada. The strontium isotopic composition (87Sr/86Sr) of ground water offers a useful means of testing hydrochemical models of regional flow involving advection and reaction. However, reaction models require knowledge of 87Sr/86Sr data for carbonate rock in the Nevada Test Site vicinity, which is scarce. To fill this data gap, samples of core or cuttings were selected from 22 boreholes at depth intervals from which water samples had been obtained previously around the Nevada Test Site at Yucca Flat, Frenchman Flat, Rainier Mesa, and Mercury Valley. Dilute acid leachates of these samples were analyzed for a suite of major- and trace-element concentrations (MgO, CaO, SiO2, Al2O3, MnO, Rb, Sr, Th, and U) as well as for 87Sr/86Sr. Also presented are unpublished analyses of 114 Paleozoic carbonate samples from outcrops, road cuts, or underground sites in the Funeral Mountains, Bare Mountain, Striped Hills, Specter Range, Spring Mountains, and ranges east of the Nevada Test Site measured in the early 1990's. These data originally were collected to evaluate the potential for economic mineral deposition at the potential high-level radioactive waste repository site at Yucca Mountain and adjacent areas (Peterman and others, 1994). Samples were analyzed for a suite of trace elements (Rb, Sr, Zr, Ba, La, and Ce) in bulk-rock powders, and 87Sr/86Sr in partial digestions of carbonate rock using dilute acid or total digestions of silicate-rich rocks. Pre-Tertiary core samples from two boreholes in the central or western part of the Nevada Test Site also were analyzed. Data are presented in tables and summarized in graphs; however, no attempt is made to interpret results with respect to ground-water flow paths in this report. Present-day 87Sr/86Sr values are compared to values for Paleozoic seawater present at the time of deposition. Many of the samples have 87Sr/86Sr compositions that remain relatively unmodified from expected seawater values. However, rocks underlying the northern Nevada Test Site as well as rocks exposed at Bare Mountain commonly have elevated 87Sr/86Sr values derived from post-depositional addition of radiogenic Sr most likely from fluids circulating through rubidium-rich Paleozoic strata or Precambrian basement rocks.

Paces, James B.; Peterman, Zell E.; Futo, Kiyoto; Oliver, Thomas A.; Marshall, Brian D.

2007-01-01

439

Fabrication of Small Mesa Structures of Bi2Sr2CaCu2O8+? Intrinsic Josephson Junctions Using Polyimide Process: Improvement of Current-Voltage Characteristics with a Very Small Number of Junctions  

NASA Astrophysics Data System (ADS)

We have realized a new method for the fabrication of a small mesa structure made of a few Bi2Sr2CaCu2O8+? intrinsic Josephson junctions by using polyimide as an adhesive to glue a crystal on a substrate. It is demonstrated that this method provides a small mesa structure having only five junctions and exhibiting uniform tunneling characteristics. We describe the details of the fabrication process and the current-voltage characteristics for a typical mesa obtained, together with the short pulse tunneling spectroscopy results.

Takemura, Ryota; Ohmaki, Masayuki; Kumano, Tetsuya; Watanabe, Takao; Suzuki, Minoru

2007-09-01

440

AED in the Middle East  

ERIC Educational Resources Information Center

|Founded in 1961, the Academy for Educational Development (AED) is an independent, nonprofit, charitable organization that operates development programs in the United States and throughout the world. This directory presents an overview of the varied activities undertaken by AED throughout the Middle East. Current AED Programs include: (1) Behavior…

Academy for Educational Development, 2004

2004-01-01

441

Cremation weights in east Tennessee.  

PubMed

In spite of increasing number of cremations in the U.S., little is known about weights of cremated remains. This research was undertaken in order to add to the limited literature on cremains weights and to explore variation. Weights of cremated remains were obtained from the East Tennessee Crematorium. The sample consists of 151 males and 155 females. Age, sex, and race were obtained for each individual. Males are about 1000 g heavier than females. Both sexes lose weight with age, but females lose weight at about twice the rate of males. East Tennessee cremation weights were compared with those from Florida reported by Warren and Maples, and those from Southern California reported by Sonek. East Tennessee results were also compared with an earlier study on ash weight of anatomical human skeletons carried out by Trotter and Hixon. East Tennessee cremations weigh about 500 g more than the samples from Florida and California, and about the same as the earlier anatomical samples. We hypothesize that variation reflects variation in body weight and activity. This variation must be taken into account when cremation weights are at issue. PMID:15461087

Bass, William M; Jantz, Richard L

2004-09-01

442

Heart failure in East Asia.  

PubMed

Heart failure (HF) carries a major burden of disease in East Asia, with high associated risk of mortality and morbidity. In recent decades, the epidemiology of HF has changed with social and economical development in East Asia. The burden of HF is still severe in East Asia. The prevalence of HF ranges from 1.3% to 6.7% throughout the region. As aetiological factors, ischaemic heart disease has increased and valvular disease reduced in most East Asian countries. Diuretics are the most commonly used drugs (51.0%-97%), followed by renin-angiotensin system (RAS) inhibitors (59%-77%), with angiotensin-converting enzyme inhibitors, ACEI, (32%-52%) and has angiotensin-2 receptor blockers, ARBs (31%-44%) in similar proportions. Betablocker use has also increased in recent years. Total mortality from HF ranges from 2% to 9% in China, Taiwan, Singapore, Thailand, and Japan. Age>65 years, diabetes mellitus, anaemia, renal dysfunction and atrial fibrillation (AF) are associated with adverse outcome. More prospective, region-specific data are still required, particularly regarding new drug therapies such as eplerenone and ivabradine. PMID:23597295

Guo, Yutao; Lip, Gregory Y H; Banerjee, Amitava

2013-05-01

443

Higher Education in East Germany.  

ERIC Educational Resources Information Center

Scholars trained to deal with the Soviet realm or more generally with the communist phenomenon have not typically included the DDR within their purview. A study of East German educational systems is of value since the decisions any society makes about its own educational system are revealing indicators both of where the society has been and where…

Legters, Lyman

444

Service Learning in East Timor  

ERIC Educational Resources Information Center

|Five days in East Timor visiting orphanages changed the lives of five young men from Youth Off The Streets. The children in these orphanages run by the Salesian order of the Catholic church are products of the Indonesian invasion, which began in 1975 and continued until 1999. Massive destruction occurred throughout the country. Buildings at the…

Reclaiming Children and Youth: The Journal of Strength-based Interventions, 2004

2004-01-01

445

The Middle East in Transition  

Microsoft Academic Search

The Middle East is undergoing the most dramatic transformation since the region emerged out of the Ottoman Empire after WWI. Radical Islamic fundamentalism and terrorism, the fixations of the Western media, are symptoms of this transformation. Over the past thirty years, however, significant social and economic developments have led to changing perceptions of the role of women, the growth of

Jabbar Al-Obaidi; Deniz Zeynep Leuenberger; Shaheen Mozaffar; Keith Lewinstein

2007-01-01

446

Middle Easts, old and new  

Microsoft Academic Search

This article is the text of an address given by Ghassan Salamé at the ‘Oil and Money’ Conference convened in London, UK, on 21 October 2009. In it, the author deals with what the ambiguous, amorphous, elastic and politically expedient term ‘Middle East’ has connoted historically and what it may or may not denote in political formulations of a given

Ghassan Salamé

2010-01-01

447

Uranium mining in East Germany (\\  

Microsoft Academic Search

Underground uranium mining was performed in East Germany after World War II on a large scale. Working conditions were very poor during the post-war years from approx. 1946 to 1955. During later years mining conditions improved. In 1990, uranium production was generally stopped as a consequence of German reunification. A company-based health care system commenced in the early years with

G. J. Enderle; K. Friedrich

1999-01-01

448

Petroleum geology of east Siberia  

SciTech Connect

Two oil-gas provinces are present in East Siberia: the Lena-Tunguska in the central, southern, and western parts, and the Khatanga-Viluy along the northern and eastern margins. The provinces developed as rift-sag features in late Proterozoic and Paleozoic time. The identified oil and gas deposits of the Lena-Tunguska province appear to be associated with a Proterozoic rift that extends east-northeast across the southern part of the basin. These deposits are in upper Proterozoic and Cambrian sandstones and carbonate rocks, sealed by Cambrian salt and argillites. The oil and gas deposits of the Khatanga-Vilyuy province are within foreland downwarps that developed in connection with docking of crustal plates during the Mesozoic: during the Triassic on the north and during the Cretaceous on the east. The source of the petroleum in the immature rocks of the southeastern Lena-Tunguska province is uncertain, perhaps being derived from rocks in a downwarp to the south or from source beds that are now beneath a conjectured thrust sheet. This province has both oil and gas pools, but is gas prone in general. The source beds for the Khatanga-Vilyuy province are Permian and Mesozoic in age; the province is gas prone. More than 40 oil and gas fields have now been discovered in East Siberia.

Clarke, J.W. (Geological Survey, Reston, VA (United States))

1991-03-01

449

The Middle East Cancer Consortium  

Cancer.gov

The Middle East Cancer Consortium (MECC) was established through an official agreement of the Ministries of Health of Cyprus, Egypt, Israel, Jordan, and the Palestinian Authority. The agreement was signed in Geneva in May 1996. Turkey officially joined the Consortium in June 2004.

450

Hysteresis in East Asian unemployment  

Microsoft Academic Search

High-performing Asian economies are quite distinctive with efficient, flexible and responsive labour markets. Comparing the persistence of unemployment in East Asian economies to that in Western countries is difficult due to the data's short time spans and possible structural breaks. This article employs advanced unit root tests to deal with these problems and fails to reject ‘hysteresis’ in the unemployment

Hsiu-Yun Lee; Jyh-Lin Wu; Chiung-Hsiang Lin

2010-01-01

451

Kalinga In South East Asia  

Microsoft Academic Search

Overseas trade and maritime activities played a significant role in the spread of the glorious Indian civilization abroad. Indians and more specifically the people of Kalinga went to South East Asia and established colonies there. The colonizing activity of the ancient Indians was distinctive in several respects. The Indians wherever they went, settled down there, absorbed some of the cultural

Benudhar Patra

452