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25,056 Matching Results
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Beam Losses in the Extraction Line of a TeV E+ E- Linear Collider With a 20-Mrad Crossing Angle
In this paper, we perform a detailed study of the power losses along the postcollision extraction line of a TeV e+e- collider with a crossing angle of 20 mrad between the beams at the interaction point. Five cases are considered here: four luminosity configurations for ILC and one for CLIC. For all of them, the strong beam-beam effects at the interaction point lead to an emittance growth for the outgoing beams, as well as to the production of beamstrahlung photons and e+e- pairs. The power losses along the 20 mrad extraction line, which are due to energy deposition by a fraction of the disrupted beam, of the beamstrahlung photons and of the e+e- coherent pairs, were estimated in the case of ideal collisions, as well as with a vertical position or angular o set at the interaction point.
Date:
March 29, 2006
Creator:
Ferrari, A.; U., /Uppsala & Nosochkov, Y.
Object Type:
Report
System:
The UNT Digital Library
Ionization in Crossed Electric and Magnetic Fields
Both in magnetohydrodynamic shocks and in accelerated partially ionized gas flow across a magnetic field, space charge separation occurs that establishes very large electric fields in the direction of motion. The width of the current layers associated with the acceleration is never less than the electron Larmor radius with no collisions and is broadened by electron collisions to a width solely determined by the effective resistivity. The electrons gain an energy regardless of collisions equal to the electric potential difference across the layer. This potential corresponds to the change in kinetic energy of mass motion per ion. For slightly ionized gases, the additional stress of neutral ion collisions within the layer can make the electric potential and hence gain in electron energy very large for only modest changes in mass velocity. Hence ionization may occur when the change in kinetic energy of the ions is small compared to the ionization potential.
Date:
March 15, 1961
Creator:
Colgate, Stirling A.
Object Type:
Report
System:
The UNT Digital Library
Increasing Heavy Oil Reserves in the Wilmington Oil Field Through Advanced Reservoir Characterization and Thermal Production Technologies
The project involves improving thermal recovery techniques in a slope and basin clastic (SBC) reservoir in the Wilmington field, Los Angeles Co., Calif. using advanced reservoir characterization and thermal production technologies. The existing steamflood in the Tar zone of Fault Block (FB) II-A has been relatively inefficient because of several producibility problems which are common in SBC reservoirs. Inadequate characterization of the heterogeneous turbidite sands, high permeability thief zones, low gravity oil, and nonuniform distribution of remaining oil have all contributed to poor sweep efficiency, high steam-oil ratios, and early steam breakthrough. Operational problems related to steam breakthrough, high reservoir pressure, and unconsolidated formation sands have caused premature well and downhole equipment failures. In aggregate, these reservoir and operational constraints have resulted in increased operating costs and decreased recoverable reserves. The advanced technologies to be applied include: (1) Develop three-dimensional (3-D) deterministic and stochastic geologic models. (2) Develop 3-D deterministic and stochastic thermal reservoir simulation models to aid in reservoir management and subsequent development work. (3) Develop computerized 3-D visualizations of the geologic and reservoir simulation models to aid in analysis. (4) Perform detailed study on the geochemical interactions between the steam and the formation rock and fluids. (5) Pilot …
Date:
March 3, 1998
Creator:
Hara, Scott
Object Type:
Report
System:
The UNT Digital Library
Public opinion concerning geothermal development in Lake County, California
A random sample of 2500 of the registered voters of Lake County, California, were polled about their opinions regarding the prospect of the development of geothermal energy in Lake County. The results of a secondary analysis of their responses are presented. The main conclusions are: (1) A large majority of the respondents are in favor of geothermal development provided that it is suitably regulated to minimize negative environmental impacts. (2) The main determinants of the respondents' approval or disapproval of geothermal development are their expectations concerning the environmental impacts of geothermal development and the economic benefits of development for the county. Essentially all respondents who do not perceive negative environmental impacts support development, and the expectation of increased job opportunities and/or tax revenues is a nearly absolute prerequisite for support of development. (auth) (3) Pro- and anti-geothermal bias have strong effects upon the formation of opinions about leasing and the perception of environmental impacts. (4) Purely demographic characteristics of the respondents, such as employment status and years of residence in the county, have only limited effects upon their attitudes toward geothermal development except in the southern portion of the county, where longer term residents and those who live in the …
Date:
March 1, 1976
Creator:
Vollintine, L. & Weres, O.
Object Type:
Report
System:
The UNT Digital Library
Workshop on nuclear dynamics. [Tahoe City, California, March 17 to 21, 1980]
A separate abstract was prepared for each of the 28 papers in this report. (RWR)
Date:
March 1, 1980
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
A PLAUSIBLE TWO-DIMENSIONAL VERTICAL MODEL OF THE EAST MESA GEOTHERMAL FIELD, CALIFORNIA, U.S.A
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.
Date:
March 1980
Creator:
Goyal, K. P. & Kassoy, D. R.
Object Type:
Article
System:
The UNT Digital Library
Additional studies of geothermal district heating for Mammoth Lakes Village, California. Final report, October 1977--March 1978
A field survey of three heating uses: snow melting, jacuzzi pool heating, and swimming pool heating in Mammoth was undertaken. Based on the results, monthly heating capacity factors were calculated and rough designs were prepared for hydronic district heating for each system. Capital cost estimates were prepared for snow melting, jacuzzi pool heating and swimming pool heating systems using LPG and geothermal district heating. It was determined that incorporation of the three additional heating uses in the District Heating System previously defined would require a capacity increase from 52 MWt to 60 MWt to meet peak demands. Energy sales would increase by about 40 percent to 127 million kwh(t) per year. The unit cost for delivered heat at 1977 price levels would decrease from 4.26 cents to 3.22 cents/kwh(t) for an investor owned District Heating System, or from 2.89 cents to 2.24 cents/kwh(t) for public ownership. The total heating costs, including annual costs of customer's heating equipment for a typical building in the Village with district heating, were compared with costs to heat the same building with electricity. The total annual costs for snow melting, jacuzzi heating and swimming pool heating using a 60 MWt District Heating System were compared …
Date:
March 30, 1978
Creator:
Sims, A. V. & Racine, W. C.
Object Type:
Report
System:
The UNT Digital Library
Oakland Sunshine (Oakland, Calif.), Ed. 1 Saturday, March 27, 1915
Weekly African-American newspaper from Oakland, California that includes local, state and national news along with advertising.
Date:
March 27, 1915
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Oakland Sunshine (Oakland, Calif.), Ed. 1 Saturday, March 20, 1915
Weekly African-American newspaper from Oakland, California that includes local, state and national news along with advertising.
Date:
March 20, 1915
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Regional Systems Development for Geothermal Energy Resources Pacific Region (California and Hawaii). Task 3: water resources evaluation. Topical report
The fundamental objective of the water resources analysis was to assess the availability of surface and ground water for potential use as power plant make-up water in the major geothermal areas of California. The analysis was concentrated on identifying the major sources of surface and ground water, potential limitations on the usage of this water, and the resulting constraints on potentially developable electrical power in each geothermal resource area. Analyses were completed for 11 major geothermal areas in California: four in the Imperial Valley, Coso, Mono-Long Valley, Geysers-Calistoga, Surprise Valley, Glass Mountain, Wendel Amedee, and Lassen. One area in Hawaii, the Puna district, was also included in the analysis. The water requirements for representative types of energy conversion processes were developed using a case study approach. Cooling water requirements for each type of energy conversion process were estimated based upon a specific existing or proposed type of geothermal power plant. The make-up water requirements for each type of conversion process at each resource location were then estimated as a basis for analyzing any constraints on the megawatts which potentially could be developed.
Date:
March 19, 1979
Creator:
Sakaguchi, J.L.
Object Type:
Report
System:
The UNT Digital Library
Laboratory Directed Research and Development Program FY 2006
The Ernest Orlando Lawrence Berkeley National Laboratory (Berkeley Lab or LBNL) is a multi-program national research facility operated by the University of California for the Department of Energy (DOE). As an integral element of DOE's National Laboratory System, Berkeley Lab supports DOE's missions in fundamental science, energy resources, and environmental quality. Berkeley Lab programs advance four distinct goals for DOE and the nation: (1) To perform leading multidisciplinary research in the computing sciences, physical sciences, energy sciences, biosciences, and general sciences in a manner that ensures employee and public safety and protection of the environment. (2) To develop and operate unique national experimental facilities for qualified investigators. (3) To educate and train future generations of scientists and engineers to promote national science and education goals. (4) To transfer knowledge and technological innovations and to foster productive relationships among Berkeley Lab's research programs, universities, and industry in order to promote national economic competitiveness.
Date:
March 8, 2007
Creator:
Hansen (Ed.), Todd
Object Type:
Report
System:
The UNT Digital Library
[Photograph of "Sunset Limited" at Los Angeles Terminal Station]
Photograph of Southern Pacific's "Sunset Limited" train No. 1, westbound, headed by diesel locomotive 6042, crossing the Los Angeles River near the Los Angeles Terminal Station on March 19, 1954.
Date:
March 19, 1954
Creator:
Plummer, Roger S.
Object Type:
Photograph
System:
The Portal to Texas History
The Western Outlook. (San Francisco, Oakland and Los Angeles, Calif.), Vol. 21, No. 25, Ed. 1 Saturday, March 13, 1915
Weekly African-American newspaper published in Oakland, California that includes local, state and national news along with extensive advertising.
Date:
March 13, 1915
Creator:
Francis, Joseph S. & Derrick, J. Lincoln
Object Type:
Newspaper
System:
The Portal to Texas History
The Western Outlook. (San Francisco, Oakland and Los Angeles, Calif.), Vol. 21, No. 27, Ed. 1 Saturday, March 27, 1915
Weekly African-American newspaper published in Oakland, California that includes local, state and national news along with extensive advertising.
Date:
March 27, 1915
Creator:
Francis, Joseph S. & Derrick, J. Lincoln
Object Type:
Newspaper
System:
The Portal to Texas History
Final Environmental Impact Report. Part I. Pacific Gas and Electric Company Geysers Unit 16, Geothermal Power Plant, Lake County, California
The environmental analysis includes the following: geology, soils, hydrology, water quality, vegetation, wildlife, air resources, health and safety, noise, waste management, cultural resources, land use, aesthetics, socioeconomics, public services, transportation, and energy and material resources. Also included are: the project description, a summary of environmental consequences, and alternatives to the proposed action. (MHR)
Date:
March 1, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Joint environmental assessment 1997--2001 of the California Department of Food and Agriculture Curly Top Virus Control Program for Bureau of Land Management and Department of Energy
The DOE, Naval Petroleum reserves in California (NPRC), proposes to sign an Amendment to the Cooperative Agreement and Supplement with the California Department of Food and Agriculture (CDFA) to extend the term of the Curly Top Virus Control Program (CTVCP) in California. This program involves Malathion spraying on NPRC lands to control the beet leafhopper, over a five year period from 1997 through 2001. It is expected that approximately 330 acres on Naval Petroleum Reserve Number 1 (NPR-1) and approximately 9,603 acres on Naval Petroleum Reserve Number 2 (NPR-2) will be treated with Malathion annually by CDFA during the course of this program. The actual acreage subject to treatment can vary from year to year. Pursuant to the requirements of the National Environmental Policy Act of 1969 (NEPA), as amended, the potential impacts of the proposed action were analyzed in a Joint Environmental Assessment (DOE/EA-1011) with the US Department of Interior, Bureau of Land Management (BLM) acting as lead agency, in consultation with the CDFA, and the DOE acting as a cooperating agency. Based on the analysis in the EA, DOE has determined that the conduct of the Curly Top Virus Control Program in California is not a major Federal …
Date:
March 1, 1997
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Distribution of Nitrate in Ground Water Redlands, California
Report and geographical survey. This report examines the distribution of nitrates in the Redland area's ground water and concludes that this distribution depends primarily upon depth below the water table and areal location. Includes several maps and figures.
Date:
March 1977
Creator:
Eccles, Lawrence A. & Bradford, Wesley L.
Object Type:
Report
System:
The UNT Digital Library
Hoopa Valley Small Scale Hydroelectric Feasibility Project
This study considered assessing the feasibility of developing small scale hydro-electric power from seven major tributaries within the Hoopa Valley Indian Reservation of Northern California (http://www.hoopa-nsn.gov/). This study pursued the assessment of seven major tributaries of the Reservation that flow into the Trinity River. The feasibility of hydropower on the Hoopa Valley Indian Reservation has real potential for development and many alternative options for project locations, designs, operations and financing. In order to realize this opportunity further will require at least 2-3 years of intense data collection focusing on stream flow measurements at multiple locations in order to quantify real power potential. This also includes on the ground stream gradient surveys, road access planning and grid connectivity to PG&E for sale of electricity. Imperative to this effort is the need for negotiations between the Hoopa Tribal Council and PG&E to take place in order to finalize the power rate the Tribe will receive through any wholesale agreement that utilizes the alternative energy generated on the Reservation.
Date:
March 22, 2009
Creator:
Miller, Curtis
Object Type:
Report
System:
The UNT Digital Library
Deep Borehole Instrumentation Along San Francisco Bay Bridges - 2000
This is a progress report on the Bay Bridges downhole network. Between 2 and 8 instruments have been spaced along the Dumbarton, San Mateo, Bay, and San Rafael bridges in San Francisco Bay, California. The instruments will provide multiple use data that is important to geotechnical, structural engineering, and seismological studies. The holes are between 100 and 1000 ft deep and were drilled by Caltrans. There are twenty-one sensor packages at fifteen sites. The downhole instrument package contains a three component HS-1 seismometer and three orthogonal Wilcox 731 accelerometers, and is capable of recording a micro g from local M = 1.0 earthquakes to 0.5 g strong ground motion form large Bay Area earthquakes. Preliminary results on phasing across the Bay Bridge, up and down hole wave amplification at Yerba Buena Island, and sensor orientation analysis are presented. Events recorded and located during 1999 are presented. Also, a senior thesis on the deep structure of the San Francisco Bay beneath the Bay Bridge is presented as an addendum.
Date:
March 1, 2000
Creator:
Hutchings, L.; Kasameyer, P.; Turpin, C.; Long, L.; Hollfelder, J.; McEvilly, T. et al.
Object Type:
Report
System:
The UNT Digital Library
An Economic Analysis of the Kilauea Geothermal Development and Inter-Island Cable Project
A study by NEA completed in April 1987 shows that a large scale (500 MW) geothermal development on the big island of Hawaii and the inter-island power transmission cable is economically infeasible. This updated report, utilizing additional information available since 1987, reaches the same conclusion: (1) The state estimate of $1.7 billion for development cost of the geothermal project is low and extremely optimistic. more realistic development costs are shown to be in the range of $3.4 to $4.3 billion and could go as high as $4.6 billion. (2) Compared to alternative sources of power generation, geothermal can be 1.7 to 2.4 times as costly as oil, and 1.2 to 1.7 times as costly as a solar/oil generating system. (3) yearly operation and maintenance costs for the large scale geothermal project are estimated to be 44.7 million, 72% greater than a solar/oil generating system. (4) Over a 40-year period ratepayers could pay, on average, between 1.3 (17.2%) and 2.4 cents (33%) per kWh per year more for electricity produced by geothermal than they are currently paying (even with oil prices stabilizing at $45 per barrel in 2010). (5) A comparable solar/oil thermal energy development project is technologically feasible, could be …
Date:
March 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
2010 Dry and 2009 - 2010 Wet Season Branchiopod Survey Report, Site 300
Lawrence Livermore National Laboratory (LLNL) requested that Condor Country Consulting, Inc. (CCCI) perform wet season surveys and manage the dry season sampling for listed branchiopods in two ponded locations within the Site 300 Experimental Test Site. Site 300 is located in Alameda and San Joaquin Counties, located between the Cities of Livermore and Tracy. The two pool locations have been identified for possible amphibian enhancement activities in support of the Compensation Plan for impacts tied to the Building 850 soil clean-up project. The Building 850 project design resulted in formal consultation with the U.S. Fish and Wildlife Service (USFWS) as an amendment (File 81420-2009-F-0235) to the site-wide Biological Opinion (BO) (File 1-1-02-F-0062) in the spring of 2009 and requires mitigation for the California tiger salamander (AMCA, Ambystoma californiense) and California red-legged frog (CRLF, Rana draytonii) habitat loss. Both pools contain breeding AMCA, but do not produce metamorphs due to limited hydroperiod. The pool to the southeast (Pool BC-FS-2) is the preferred site for amphibian enhancement activities, and the wetland to northwest (Pool OA-FS-1) is the alternate location for enhancement. However, prior to enhancement, LLNL has been directed by USFWS (BO Conservation Measure 17 iii) to 'conduct USFWS protocol-level branchiopod surveys …
Date:
March 14, 2011
Creator:
Dexter, W.
Object Type:
Report
System:
The UNT Digital Library
Estimates o the risks associated with dam failure
The probabilities and potential consequences of dam failure in California, primarily due to large earthquakes, was estimated, taking as examples eleven dams having a relatively large population downstream. Mortalities in the event of dam failure range from 11,000 to 260,000, while damage to property may be as high as $720 million. It was assumed that an intensity IX or X earthquake (on the Modified Mercalli Scale) would be sufficient to completely fail earthen dams. Predictions of dam failure were based on the recurrence times of such earthquakes. For the dams studied, the recurrence intervals for an intensity IX earthquake varied between 20 and 800 years; for an intensity X between 50 and 30,000 years. For the Lake Chabot and San Pablo dams (respectively 20, 30 years recurrent earthquake times for a intensity X) the associated consequences are: 34,000 (Lake Chabot) and 30,000 (San Pablo) people killed; damage $140 million and $77 million. Evaculation was found to ameliorate the consequences slightly in most cases because of the short time available. Calculations are based on demography, and assume 10 foot floodwaters will drown all in their path and destroy all one-unit homes in the flood area. Damage estimates reflect losses incurred by …
Date:
March 1, 1974
Creator:
Ayyaswamy, P.; Hauss, B.; Hseih, T.; Moscati, A.; Hicks, T.E. & Okrent, D.
Object Type:
Report
System:
The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 38, No. 59, Ed. 1 Friday, March 9, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
March 9, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 71, Ed. 1 Friday, March 12, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
March 12, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History