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Taller de Trabajo Sobre Modelaje de Cultivos: Entrenamiento y Calibracion Informe

Description: Report on a Modeling Crop and Climate Change workshop. The objectives of the workshop were: 1) train Venezuelan scientists in the use of agricultural models IBSNAT program (International Benchmark Sites Network for Agrotechnology Transfer), including discussions about their applicability and the acquisition of knowledge about the data needed for proper simulation and validation, 2) Calibrate the model of maize (CERES) for different cultivars and different regions of Venezuela using data from soil and climate corresponding to various tests, 3) Carry out model simulations under various climate scenarios to assess their potential effects on crops, 4) To strengthen the cooperation between users of IBSNAT models to make necessary tests to get a better database application thus facilitating validation and calibration of these models, and 5) To establish plans for future agricultural and meteorological research in the context of global climate change.
Date: November 1989
Creator: Acevedo, Miguel F.; Andressen, Rigoberto; Azocar, Aura; Bisbal, Evelyn; Comerma, Juan; Corvo, Fernando et al.
Partner: UNT College of Engineering

PAN-EARTH/FONAIAP Workshop on Crop Model Training and Calibration

Description: This report discusses a PAN-EARTH / Fondo Nacional de Investigaciones Agropecuarias (FONAIAP) Workshop on Crop Model Training and Calibration.
Date: November 1989
Creator: Acevedo, Miguel F.; Andressen, Rigoberto; Azocar, Aura; Bisbal, Evelyn; Comerma, Juan; Corvo, Fernando et al.
Partner: UNT College of Engineering

Report to Congress on reassessment of the Civilian Radioactive Waste Management Program

Description: In the Report of the House Committee on Appropriations (House Report No. 101-96) on the Energy and Water Development Appropriation Act, 1990 (P.L. 101-101), the Committee directed the Department of Energy (DOE) ``{hor_ellipsis} to submit a report within 60 days of enactment {hor_ellipsis} which describes in detail how the Department plans to respond to the Committee`s {hor_ellipsis} concerns dealing with endemic schedule slips, problems in management structure, and lack of integrated contractor efforts.`` This report has been prepared in response to the above-mentioned Congressional directive. It is based on a comprehensive review that the Secretary of Energy has recently completed of the Civilian Radioactive Waste Management Program. The Secretary`s review has led to the development of a three-point action plan for restructuring the program. This plan is explained in this report.
Date: November 1, 1989
Partner: UNT Libraries Government Documents Department

A study of heat transfer for two layered composite inclined plate crotch absorbers

Description: Since a copper plate (Z=29) absorbs most of the photon energy very near the surface, the temperature of the surface becomes very high despite of having a high thermal conductivity. On the other hand, a beryllium plate( Z=4) can diffuse the intense radiation throughout the depth of its plate by allowing photons to penetrate, but has a low thermal conductivity (about half of that of a copper). As an effort to combine both merits of Be and Cu, a Be-Cu composite absorber was developed and has been successfully used in CESR. They analyzed composite the heat transfer problem numerically for the case of a vertically located Be-Cu composite cylinder which results in symmetry with respect to the center of photon beam and allows them to consider only half a domain. In this note, an inclined absorber with two layered metal plates is considered and a full domain solution is sought to study the asymmetric heating due to the inclined photon beam penetration heating. An analytical solution for heat transfer is obtained for a full domain using the Fourier integral transformation and of particular interests are the effects of different thickness ratios of two materials and different inclination angles.
Date: November 1, 1989
Creator: Choi, M.
Partner: UNT Libraries Government Documents Department

Independent safety evaluation of the enriched uranium oxide test UO-1

Description: The UO-1 test is designed to provide information on the performance of D9 clad, enriched uranium oxide fuel in FFTF. The Series IV FFTF driver fuel will utilize enriched uranium oxide fuel with D9 cladding. Irradiation data are needed for computer code calibration to support the FSAR analysis effort for the series IV fuel. The UO-1 assembly consists of a 217-pin bundle with the same pin and duct dimensions as a standard driver fuel assembly. The test consists of seven UO{sub 2} pins, 30 mixed oxide test pins, and 180 driver type pins. The test will be irradiated for approximately 250 EFPD. An Independent Safety Evaluation (ISE) of the test has been conducted. Information has been taken from the Test Design Documents, but independent calculations have been made of the safety-related parameters. The scope includes all items specified in the Users` Guide for Irradiation of Experiments in the FTR. Areas investigated include Technical Specification Compliance, Steady State Operation, Transient Operation, Failure Consequences, Stress and Seismic, HCDA, and Test Handling and Criticality Considerations.
Date: November 1, 1989
Creator: Van Keuren, J.C.
Partner: UNT Libraries Government Documents Department

The effects of photon spectrum and variable thermal conductivity on the distribution of temperature in an inclined plate crotch absorber

Description: Absorption of photons in a metal is varied up to the photon energy spectrum. For example, larger wavelength photons generally can be more easily absorbed when they pass through an absorber while shorter ones tend to penetrate. This spectral variation of photon energy absorption takes place angularly due to the angular variation of the synchrotron radiation power. In this note, the effects of photon spectrum have been investigated for the thermal analysis of crotch absorbers. In addition, the effects of variable thermal conductivity have also been investigated. The heat generation due to the photon energy deposition diffuses throughout the metal with the thermal conductivity k which is dependent on the temperature field. This temperature dependence of the conductivity results in a non-linear heat conduction equation. This note presents both effects of the photon spectrum and the variable thermal conductivity on the temperature distribution for inclined crotch absorbers. A finite difference program was written and the calculation results were compared with the previous analytical solution which assumed constant conductivity and absorption coefficient.
Date: November 1, 1989
Creator: Choi, M.
Partner: UNT Libraries Government Documents Department

Pinellas Plant: Child Care/Partnership School safety assessment

Description: The Albuquerque Operations Office through the Pinellas Plant Area Office is involved in a joint venture to establish a Partnership School and a Day Care Facility at the Plant. The venture is unique in that it is based on a partnership with the local county school system. The county school system will provide the teachers, supplies and classroom furnishings for the operation of the school for pre-kindergarten, kindergarten, first and second grade during regular school hours. The Government will provide the facility and its normal operating and maintenance costs. A Day Care Facility will also be available for children from infancy through the second grade for outside school hours. The day care will be operated as a non-profit corporation. Fees paid by parents with children in the day care center will cove the cost of staff, food, supplies and liability insurance. Again, the government will provide the facility and its normal operating and maintenance costs. Between 75 and 90 children are expected in the first year of operation. The Partnership School will consist of one class each for pre-kindergarten, kindergarten and first grade. Second grade will be added in 1990. The total estimated number of children for both the Child Care and Partnership School should not exceed 200 children. Expected benefits include reduced absenteeism, tardiness and turnover and thus increased productivity. The program will be an asset in recruiting and retaining the best workforce. Other benefits include improved education for the children.
Date: November 1, 1989
Partner: UNT Libraries Government Documents Department

Advanced coal-fueled gas turbine systems; Technical progress report, July--September 1989

Description: During this quarter, the initial round of iron-oxide based sorbent tests were completed, with iron-oxide based sorbents showing a small advantage over the calcia-based sorbents that had been evaluated previously. Also, the evaluation of coal-water mixture (CWM), was initiated, and a bench-scale series of experiments conducted. These latter experiments concerned spent sorbent stability in molten slag.
Date: November 29, 1989
Partner: UNT Libraries Government Documents Department

Yucca Mountain program summary of research and technical review activities, July 1988--June 1989

Description: The Desert Research Institute (DRI), through its Water Resources Center (WRC), since 1984 has supported the State of Nevada Nuclear Waste Project Office`s activities related to the proposed high-level radioactive waste repository at Yucca Mountain on the Nevada Test Site (NTS). This effort is directed at providing the State Office with an unbiased evaluation of the Yucca Mountain Project (YMP) investigations performed by the US Department of Energy (DOE) and the Nuclear Regulatory Commission (NRC). The overall objective is to determine independently whether or not the site meets the performance criteria defined by the Nuclear Waste Policy Act of 1982 and amendments for isolating and containing the wastes during emplacement and the proposed life of the repository. A particularly important area of concern with the proposed repository is the site`s hydrology. The faculty of the DRI have long been involved with research throughout the State and have particular expertise in groundwater studies related to radionuclide migration and hydrologic safety of underground nuclear testing by DOE and predecessor agencies. In addition, we utilize laboratory personnel for chemical and isotopic analyses in both of the DRI-WMC water chemistry laboratories.
Date: November 1, 1989
Partner: UNT Libraries Government Documents Department

Interagency Geothermal Coordinating Council Annual Report for Fiscal Year 1989 Draft

Description: The U.S. Interagency Geothermal Coordinating Council was a multi-agency group charged with identifying and reducing barriers to geothermal energy development in the U.S. Many of the issues covered related to regulations for and progress in the leasing of Federal lands in the West for power development. The IGCC reports are important sources of historical information. Table 1 lists significant events in the history of use of geothermal energy in the U.S., starting in1884. That is useful for tracking which Federal departments and agencies managed aspects of this work over time. Table 2 gives a complete accounting for all Federal outlays for geothermal energy development for FY 1979 -1989, including non-DOE outlays. Table 3 shows the status of the U.S. Geothermal Loan Guarantee Program at end of FY 1989: of the $500 million authorized, $285 million was committed to eight projects, and about $40 million had been paid out on project defaults. An additional $101 million had been repaid by the borrowers. (DJE - 2005)
Date: November 21, 1989
Partner: UNT Libraries Government Documents Department

Process Integration Study of the Decatur HFCS Plant for American Fructose Company, Decatur, AL [Advanced Industrial Heat Pump Applications and Evaluations]

Description: This work has carried out in two phases: Phase 1, identification of opportunities for heat pumps in industrial applications and Phase 2; evaluation of heat pumps in industrial applications. In Phase 1, pinch analysis was applied to several industrial sites to identify the best opportunities for heat pumping and other forms of heat integration. In Phase 2, more detailed analyses were undertaken, including the evaluation of a heat pump installed as a recommendation of Phase 1.
Date: November 10, 1989
Creator: Eastwood, A.
Partner: UNT Libraries Government Documents Department

Response to Congressional inquiry regarding seepage basins at the Savannah River Site

Description: This report has been prepared in response to the request by the House Appropriations Committee to address the permanent isolation and containment/removal of the contaminants associated with the seepage basins at the Savannah River Site (SRS). Many of the activities regarding groundwater monitoring and status referred to in this report will be discussed in detail in a companion report on the Groundwater Monitoring Program at the SRS [(U), WSRC-RP-89-889].
Date: November 22, 1989
Partner: UNT Libraries Government Documents Department

Permeability changes in coal resulting from gas desorption

Description: Sampling Procedure: This project requires a carefully coordinated sample preparation procedure that will ensure that specimens of the proper size and physical characteristics are available for the various measurement methods used. Coherent blocks of coal will be collected in the field, with subsamples being removed in the lab by 1 inch-diameter core drill. At least 5 separate cores will be drilled from each block. Coal blocks sampled in the field will be approximately 10 inches (times) 10 inches {times} 6 inches. Distinctive compositional lithologies should be selected for sampling. For example, a section of the seam containing particularly thick vitrain or durain bands might be selected; or the block might include a mineral matter rich layer. If necessary, several blocks should be selected to represent a range in compositions. Sampling procedure must include a method for retaining moisture. The sample must not be allowed to dry out. Exposure to atmospheric oxygen should be limited as much as possible. The samples must carefully packed for shipment so as to preserve their integrity.
Date: November 19, 1989
Creator: Levine, J.R. & Tsay, F.
Partner: UNT Libraries Government Documents Department

[Regulation of terpene metabolism]

Description: Terpenoid oils, resins, and waxes from plants are important renewable resources. The objective of this project is to understand the regulation of terpenoid metabolism using the monoterpenes (C[sub 10]) as a model. The pathways of monoterpene biosynthesis and catabolism have been established, and the relevant enzymes characterized. Developmental studies relating enzyme levels to terpene accumulation within the oil gland sites of synthesis, and work with bioregulators, indicate that monoterpene production is controlled by terpene cyclases, the enzymes catalyzing the first step of the monoterpene pathway. As the leaf oil glands mature, cyclase levels decline and monoterpene biosynthesis ceases. Yield then decreases as the monoterpenes undergo catabolism by a process involving conversion to a glycoside and transport from the leaf glands to the root. At this site, the terpenoid is oxidatively degraded to acetate that is recycled into other lipid metabolites. During the transition from terpene biosynthesis to catabolism, the oil glands undergo dramatic ultrastructural modification. Degradation of the producing cells results in mixing of previously compartmentized monoterpenes with the catabolic enzymes, ultimately leading to yield decline. This regulatory model is being applied to the formation of other terpenoid classes (C[sub 15] C[sub 20], C[sub 30], C[sub 40]) within the oil glands. Preliminary investigations on the formation of sesquiterpenes (C[sub 15]) suggest that the corresponding cyclases may play a lesser role in determining yield of these products, but that compartmentation effects are important. From these studies, a comprehensive scheme for the regulation of terpene metabolism is being constructed. Results from this project wail have important consequences for the yield and composition of terpenoid natural products that can be made available for industrial exploitation.
Date: November 9, 1989
Creator: Croteau, R.
Partner: UNT Libraries Government Documents Department

Groundwater quality assessment/corrective action feasibility plan

Description: The Savannah River Laboratory (SRL) Seepage Basins are located in the northeastern section of the 700 Area at the Savannah River Site. Currently the four basins are out of service and are awaiting closure in accordance with the Consent Decree settled under Civil Act No. 1:85-2583. Groundwater monitoring data from the detection monitoring network around the SRL Basins was recently analyzed using South Carolina Hazardous Waste Management Regulations R.61-79.264.92 methods to determine if groundwater in the immediate vicinity of the SRL Basins had been impacted. Results from the data analysis indicate that the groundwater has been impacted by both volatile organic constituents (VOCs) and inorganic constituents. The VOCs, specifically trichloroethylene and tetrachloroethylene, are currently being addressed under the auspices of the SRS Hazardous Waste Permit Application (Volume III, Section J.6.3). The impacts resulting from elevated levels of inorganic constituent, such as barium, calcium, and zinc in the water table, do not pose a threat to human health and the environment. In order to determine if vertical migration of the inorganic constituents has occurred three detection monitoring wells are proposed for installation in the upper portion of the Congaree Aquifer.
Date: November 15, 1989
Creator: Stejskal, G.F.
Partner: UNT Libraries Government Documents Department

Enzymatic desulfurization of coal. Fifth quarterly report, June 16--September 15, 1989

Description: Our experimental approach focuses on the use of enzymes which catalyze the addition of oxygen to organic compounds. In tailoring the application of these enzymes to coal processing, we are particularly interested in ensuring that oxidation occurs at sulfur and not at carbon-carbon bonds. Previous studies with DBT have shown that the reaction most frequently observed in microbial oxidative pathways is one in which DBT is oxidized at ring carbons. These reactions, as we have said, are accompanied by a considerable decrease in the energy content of the compound. In addition, microbial pathways have been identified in which the sulfur atom is sequentially oxidized to sulfoxide, to sulfone, to sulfonate, and finally to sulfuric acid. In this case, the fuel value of the desulfurized compounds is largely retained. We are evaluating the potential of commercially available enzymes to selectively catalyze oxidation at sulfur.
Date: November 7, 1989
Creator: Boyer, Y. N.; Crooker, S. C.; Kitchell, J. P.; Nochur, S. V. & Marquis, J. K.
Partner: UNT Libraries Government Documents Department

Refractory experience in circulating fluidized bed combustors, Task 7. Final report

Description: This report describes the results of an investigation into the status of the design and selection of refractory materials for coal-fueled circulating fluidized-bed combustors. The survey concentrated on operating units in the United States manufactured by six different boiler vendors: Babcock and Wilcox, Combustion Engineering, Foster Wheeler, Keeler Dorr-Oliver, Pyropower, and Riley Stoker. Information was obtained from the boiler vendors, refractory suppliers and installers, and the owners/operators of over forty units. This work is in support of DOE`s Clean Coal Technology program, which includes circulating fluidized-bed technology as one of the selected concepts being evaluated.
Date: November 1, 1989
Creator: Vincent, R. Q.
Partner: UNT Libraries Government Documents Department

Verification and validation plan for reactor analysis computer codes

Description: This report presents a verification and validation (V V) plan for reactor analysis computer codes used in Technical Specifications development and for other safety and production support calculations. This plan fulfills the commitments by Westinghouse Savannah River Company (WSRC) to the Department of Energy Savannah River (DOE-SR) as identified in a letter to R.E. Tiller (Reference 1). The plan stresses verification and validation by demonstrating successful application of the codes to predict reactor data, special measurements, and benchmarks. This is in compliance with the intent of the WSRC quality assurance requirements. Restructuring of software especially to achieve verification compliance is not recommended.
Date: November 1, 1989
Creator: Toffer, H.; Crowe, R.D.; Schwinkendorf, K.N. (Westinghouse Hanford Co., Richland, WA (United States)) & Pevey, R.E. (Westinghouse Savannah River Co., Aiken, SC (United States))
Partner: UNT Libraries Government Documents Department

Predictive models for circulating fluidized bed combustors

Description: The overall objective of this investigation is to develop experimentally verified models for circulating fluidized bed (CFB) combustors. The purpose of these models is to help American industry, such as Combustion Engineering, design and scale-up CFB combustors that are capable of burning US Eastern high sulfur coals with low SO{sub x} and NO{sub x} emissions. In this report, presented as a technical paper, solids distributions and velocities were computed for a PYROFLOW circulating fluidized bed system. To illustrate the capability of the computer code an example of coal-pyrite separation is included, which was done earlier for a State of Illinois project. 24 refs., 20 figs., 2 tabs.
Date: November 1, 1989
Creator: Gidaspow, D.
Partner: UNT Libraries Government Documents Department

N[sub 2]O formation in combustion systems

Description: The objective of this project is to characterize N[sub 2]O emissions from combustion sources emphasizing N[sub 2]O emissions from post-combustion selective gas phase NO[sub x] reduction processes and reburning. The processes to be evaluated include ammonia, urea and cyanuric acid injection and reburning. The project includes pilot-scale testing at two facilities supported by chemical kinetic modeling. Testing will be performed on both a gas-fired plug flow combustor and a pulverized-coal fired combustor. Work performed to date has included the performance of the initial detailed chemical kinetics calculations. These calculations showed that both urea and cyanuric acid produce significant quantities of N[sub 2]O, while NH[sub 3] injection produced negligible amounts. These kinetics data support limited test results reported for cyanuric acid and ammonia injection. Laboratory work to evaluate the selective gas phase NO[sub x] reduction processes listed above will begin in the gas-fired facility early in CY 1990. Testing to evaluate reburning at the coal-fired facility is currently planned to be performed in parallel with the testing at the gas-fired facility. Following completion of that work, additional kinetics calculations will be performed.
Date: November 1, 1989
Partner: UNT Libraries Government Documents Department

Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 9, August 1, 1989--October 31, 1989

Description: Experiments were conducted to investigate the processes that influence the destruction of NO in the fuel rich stage of the reburning process. The objective is to gain a better understanding of the mechanisms that control the fate of coal nitrogen in the fuel rich zone of a combustion process. Time resolved profiles of temperature, major (CO{sub 2}, CO, H{sub 2}O, O{sub 2}, H{sub 2} and N{sub 2}), nitrogenous (NO, HCN and NH{sub 3}) and hydrocarbon (CH{sub 4} and C{sub 2}H{sub 2}) species were obtained for various reburning tests. A slow continuous source of HCN was observed in the reburn zone for most tests. HCN formation from NO + CH{sub i} reactions would partially explain this trend. It has been proposed in the past that these reactions would be fast (less than 0.1s) and the produced HCN would be short lived. However, evidence was provided in this study indicating that NO + CH{sub i} reactions might contribute to HCN formation at longer residence times in the reburn zone. Reactions of molecular nitrogen with hydrocarbon radicals were determined to be a significant source of HCN formation, especially as NO levels decreased in the reburn zone. The results of several tests would justify the exclusion of continued coal devolatilization in the reburn zone as a major source of HCN.
Date: November 20, 1989
Creator: Wendt, J. O. L. & Mereb, J. B.
Partner: UNT Libraries Government Documents Department

Electron crystallography of PhoE porin, an outer membrane, channel- forming protein from E. coli

Description: One approach to studying the structure of membrane proteins is the use of electron crystallography. Dr. Bing Jap has crystallized PhoE pore-forming protein (porin) from the outer membrane of escherichia coli (E. coli) into monolayer crystals. The findings of this research and those of Jap (1988, 1989) have determined these crystals to be highly ordered, yielding structural information to a resolution of better than 2.8 angstroms. The task of this thesis has been to collect and process the electron diffraction patterns necessary to generate a complete three-dimensional set of high resolution structure factor amplitudes of PhoE porin. Fourier processing of these amplitudes when combined with the corresponding phase data is expected to yield the three-dimensional structure of PhoE porin at better than 3.5 angstroms resolution. 92 refs., 33 figs., 3 tabs. (CBS)
Date: November 1, 1989
Creator: Walian, P.J.
Partner: UNT Libraries Government Documents Department

The North Texas Regional Institute For Educators On The Visual Arts, A Proposal to: Effie and Wofford Cain Foundation

Description: A proposal to the Effie and Wofford Cain Foundation by the University of North Texas in collaboration with DFW public schools, DFW museums, and regional and state art councils, inviting Effie and Wofford Foundation to participate in the establishment of the North Texas Regional Institute for Educators on the Visual Arts through a three-year grant. The grant will be devoted to leadership training, staff development, and the implementation of a discipline-based visual arts program at the elementary school level. Included in the proposal is a broken down budget about the division of money through NTIEVA's consortia. The authors believe that the arts are an important component of a well-balanced educational program after studying educational reform.
Date: November 30, 1989
Creator: University of North Texas
Partner: UNT Libraries Special Collections

Abstract: The North Texas Regional Institute For Educators On The Visual Arts

Description: An abstract for the North Texas Regional Institute for Educators on the Visual Arts, with the intention of inviting corporations and private foundations in North Texas to join with the Getty Center for Education in the Arts, the University of North Texas to innovate and implement a education reform for discipline-based arts. The abstract goes into details about what NTIEVA hopes to achieve through their program, wanting to tackle visual literacy, critical criticism and language among elementary and secondary students. Further details about budgeting and proposed planning are incorporated at the end of the abstract.
Date: November 27, 1989
Creator: North Texas Institute for Educators on the Visual Arts
Partner: UNT Libraries Special Collections