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178,054 Matching Results

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(open access)

My Whine, Your Wine

Grapes hold the flavors of the lands where they grow, and when you make wine from them, those flavors of the land come through. Tasting wine from a place you've been can bring you back to that place with aromas and notes indicative of that place. A bottle of wine changes every day, and how it will taste depends on the moment you choose to release it from the glass walls. I have a vested interest in wine, because it is a living thing. I am compelled to make wine because its characteristics are like personality traits. Although some of those characteristics are harsh at times, I appreciate them all. Each trait plays an important role in the balance, the overall personality. Like my own personality flaws, wine's harsh tones can smooth over time. My relationship with wine is constantly evolving, with every new varietal, vintage, batch and blend. Believe me, after some of the jobs I had before my first day at Su Vino, I cherish every moment of my winemaking career. My Whine, Your Wine is the story of how it all started.

Date: December 2011

Creator: Abbott, Shannon Marie

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Results for strange particle production from BNL experiment E802

Results are presented for inclusive measurements of ..pi.., K, proton and deuteron spectra from 14.5 A/center dot/GeV/c Si central collisions with Au targets. Pseudo-rapidity distributions of charged particles from a variety of targets are also shown. Ratios of K to ..pi.. yields are large and increase with p/sub /perpendicular// for Si + Au collisions. 4 refs., 11 figs.

Date: January 1, 1988

Creator: Abbott, T.; Akiba, Y.; Alburger, D.; Beavis, D.; Betts, R. R.; Birstein, L. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Critical-fluid extraction of organics from water. Volume II. Experimental. Final report, 1 October 1979-30 November 1983

Critical fluid extraction has been tested at the pilot plant scale as a method of separating organics from water. The process employed resembles a liquid-liquid extraction in which the solvent is near-critical carbon dioxide and the feed is an organic in aqueous solution. Carbon dioxide's solvent and other thermodynamic properties, and the effective utilization of a vapor recompression cycle in the process design have significantly reduced the energy required for these separations. This process is an energy-conserving alternative to the distillation processes which are currently employed. The objectives of this portion of the project were to demonstrate the feasibility of this technology and to gather the engineering data required to evaluate the process. Three alcohols were tested in these experiments - ethanol, isopropanol and sec-butanol - and were all successfully extracted.

Date: June 1, 1984

Creator: Abboud, O. K.; de Filippi, R. P.; Goklen, K. E. & Moses, J. M.

Object Type: Report

System: The UNT Digital Library

(open access)

A nonlinear dynamic model of a once-through, helical-coil steam generator

A dynamic model of a once-through, helical-coil steam generator is presented. The model simulates the advanced liquid metal reactor superheated cycle steam generator with a four-region, moving-boundary, drift-flux model. The model is described by a set of nonlinear differential equations derived from the fundamental equations of conversation of mass, energy, and momentum. Sample results of steady-state and transient calculations are presented.

Date: July 1, 1993

Creator: Abdalla, M. A.

Object Type: Report

System: The UNT Digital Library

(open access)

Theoretical Atomic Physics code development IV: LINES, A code for computing atomic line spectra

A new computer program, LINES, has been developed for simulating atomic line emission and absorption spectra using the accurate fine structure energy levels and transition strengths calculated by the (CATS) Cowan Atomic Structure code. Population distributions for the ion stages are obtained in LINES by using the Local Thermodynamic Equilibrium (LTE) model. LINES is also useful for displaying the pertinent atomic data generated by CATS. This report describes the use of LINES. Both CATS and LINES are part of the Theoretical Atomic PhysicS (TAPS) code development effort at Los Alamos. 11 refs., 9 figs., 1 tab.

Date: December 1, 1988

Creator: Abdallah, J. Jr. & Clark, R.E.H.

Object Type: Report

System: The UNT Digital Library

(open access)

QIKMIX: a quick-turnaround computer program for computing opacities of mixtures

QIKMIX is a quick-turnaround computer code developed to compute the radiative Rosseland mean opacity of specified mixtures at specified temperature and density points. The QIKLIB data base, which QIKMIX uses, has been derived from the OPLIB library. For most mixtures, QIKMIX can compute opacities over a temperature range of 50 to 25,000 eV in less than 1 min of CDC 7600 computer time. The purpose of this report is to discuss the QIKLIB data base and the operation of the QIKMIX code.

Date: May 1, 1979

Creator: Abdallah, J. Jr. & Huebner, W.F.

Object Type: Report

System: The UNT Digital Library

(open access)

Theoretical atomic physics code development I: CATS: Cowan Atomic Structure Code

An adaptation of R.D. Cowan's Atomic Structure program, CATS, has been developed as part of the Theoretical Atomic Physics (TAPS) code development effort at Los Alamos. CATS has been designed to be easy to run and to produce data files that can interface with other programs easily. The CATS produced data files currently include wave functions, energy levels, oscillator strengths, plane-wave-Born electron-ion collision strengths, photoionization cross sections, and a variety of other quantities. This paper describes the use of CATS. 10 refs.

Date: December 1, 1988

Creator: Abdallah, J. Jr.; Clark, R.E.H. & Cowan, R.D.

Object Type: Report

System: The UNT Digital Library

(open access)

Experimental Investigation of the Root Cause Mechanism and Effectiveness of Mitigating Actions for Axial Offset Anomaly in Pressurized Water Reactors

Axial offset anomaly (AOA) in pressurized water reactors refers to the presence of a significantly larger measured negative axial offset deviation than predicted by core design calculations. The neutron flux depression in the upper half of high-power rods experiencing significant subcooled boiling is believed to be caused by the concentration of boron species within the crud layer formed on the cladding surface. Recent investigations of the root-cause mechanism for AOA [1,2] suggest that boron build-up on the fuel is caused by precipitation of lithium metaborate (LiBO2) within the crud in regions of subcooled boiling. Indirect evidence in support of this hypothesis was inferred from operating experience at Callaway, where lithium return and hide-out were, respectively, observed following power reductions and power increases when AOA was present. However, direct evidence of lithium metaborate precipitation within the crud has, heretofore, not been shown because of its retrograde solubility. To this end, this investigation has been undertaken in order to directly verify or refute the proposed root-cause mechanism of AOA, and examine the effectiveness of possible mitigating actions to limit its impact in high power PWR cores.

Date: July 2, 2005

Creator: Abdel-Khalik, Said

Object Type: Report

System: The UNT Digital Library

(open access)

An English and Arabic Character Printer

This paper is presented in satisfaction of the requirement for two problems in lieu of thesis which are required for the degree, Master of Science. The two problems are: (1) to provide an electric interface between the M6800 microprocessor and the printer; and (2) to design an Arabic character set and to provide the logic required for its implementation. As it would be artificial and impractical to document these problems separately, a single document here is provided.

Date: December 1976

Creator: Abdel-Razzack, Malek G.

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Reductive Precipitation of Metals Photosensitized by Tin Protoporphyrin

For the first time, we show that redox-sensitive metals, which are highly soluble in the oxidized state can be reduced and precipitated from aqueous solution using tin protoporphyrin and light in the presence of an electron donor. Hg{sup 2+} and Cu{sup 2+} were reduced to the metallic state, and Ub{sup 6+} precipitated as oxide with very low volubility, suggesting that removal of these metals via reductive photoreduction and precipitation may be an innovative way for wastewater treatment. Ag{sup 2+} and Au{sup 2+} were reduced to the metallic state and precipitated as nanoparticles. Finally, using tin porphyrins and light for a variety of purposes involving reactions that require a low redox potential may be a good step toward energy conservation and environmentally benign processing.

Date: January 18, 2000

Creator: Abdelouas, A.; Gong, W. L. & Shelnutt, John A.

Object Type: Article

System: The UNT Digital Library

(open access)

Reduction of Heavy Metals by Cytochrome c(3)

We report on reduction and precipitation of Se(VI), Pb(II), CU(II), U(VI), Mo(VI), and Cr(VI) in water by cytochrome c{sub 3} isolated from Desulfomicrobium baczdatum [strain 9974]. The tetraheme protein cytochrome c{sub 3} was reduced by sodium dithionite. Redox reactions were monitored by UV-visible spectroscopy of cytochrome c{sub 3}. Analytical electron microscopy work showed that Se(VI), Pb(II), and CU(II) were reduced to the metallic state, U(W) and Mo(W) to U(IV) and Mo(IV), respectively, and Cr(VI) probably to Cr(III). U(IV) and Mo(W) precipitated as oxides and Cr(III) as an amorphous hydroxide. Cytochrome c{sub 3} was used repeatedly in the same solution without loosing its effectiveness. The results suggest usage of cytochrome c{sub 3} to develop innovative and environmentally benign methods to remove heavy metals from waste- and groundwater.

Date: January 18, 2000

Creator: Abdelouas, A.; Gong, W. L.; Lutze, W.; Nuttall, E. H.; Sprague, F.; Shelnutt, John A. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

In-Situ Real Time Monitoring and Control of Mold Making and Filling Processes: Final Report

This project presents a model for addressing several objectives envisioned by the metal casting industries through the integration of research and educational components. It provides an innovative approach to introduce technologies for real time characterization of sand molds, lost foam patterns and monitoring of the mold filling process. The technology developed will enable better control over the casting process. It is expected to reduce scrap and variance in the casting quality. A strong educational component is integrated into the research plan to utilize increased awareness of the industry professional, the potential benefits of the developed technology, and the potential benefits of cross cutting technologies.

Date: December 22, 2010

Creator: Abdelrahman, Mohamed & Currie, Kenneth

Object Type: Report

System: The UNT Digital Library

(open access)

Interated Intelligent Industrial Process Sensing and Control: Applied to and Demonstrated on Cupola Furnaces

The final goal of this project was the development of a system that is capable of controlling an industrial process effectively through the integration of information obtained through intelligent sensor fusion and intelligent control technologies. The industry of interest in this project was the metal casting industry as represented by cupola iron-melting furnaces. However, the developed technology is of generic type and hence applicable to several other industries. The system was divided into the following four major interacting components: 1. An object oriented generic architecture to integrate the developed software and hardware components @. Generic algorithms for intelligent signal analysis and sensor and model fusion 3. Development of supervisory structure for integration of intelligent sensor fusion data into the controller 4. Hardware implementation of intelligent signal analysis and fusion algorithms

Date: February 12, 2003

Creator: Abdelrahman, Mohamed; Haggard, roger; Mahmoud, Wagdy; Moore, Kevin; Clark, Denis; Larsen, Eric et al.

Object Type: Report

System: The UNT Digital Library

(open access)

French Structuralism and its Contribution to Sociological Theory

This study delineates the basic concepts and analytical techniques of contemporary French structuralists, namely Levi-Strauss, Lacan, Barthes, Althusser, and Foucault, and critically examines the contribution of their formulations to sociological theory and the implication of such formulations on the methodological orientation in sociology.

Date: August 1985

Creator: Abderrahmane, Azzi

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Social Control in the Newsroom: A Case Study

The problem of this study is to investigate how news policy in the Denton Record-Chronicle is defined and maintained and whether the newspaper staffers tend to conform to or conflict with the newspaper's news policy. The study suggests that the more experienced the staffer, the more likely he will conflict with the newspaper's news policy, and the less experienced the staffer, the more likely he will conform to the newspaper's news policy. Social control is in the hand of the newspaper organization. That is, the newspaper tends to control the mechanisms of social control. However, unless the newspaper recognizes the needs of the staffers' participation in its editorial decision, conflict may continue to be an important factor in the newsroom work-setting.

Date: August 1982

Creator: Abderrahmane, Azzi

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Boosted Objects: A Probe of Beyond the Standard Model Physics

We present the report of the hadronic working group of the BOOST2010 workshop held at the University of Oxford in June 2010. The first part contains a review of the potential of hadronic decays of highly boosted particles as an aid for discovery at the LHC and a discussion of the status of tools developed to meet the challenge of reconstructing and isolating these topologies. In the second part, we present new results comparing the performance of jet grooming techniques and top tagging algorithms on a common set of benchmark channels. We also study the sensitivity of jet substructure observables to the uncertainties in Monte Carlo predictions.

Date: June 12, 2012

Creator: Abdesselam, A.; U., /Oxford; Kuutmann, E.Bergeaas; /DESY; Bitenc, U.; U., /Freiburg et al.

Object Type: Article

System: The UNT Digital Library

(open access)

FINESSE: study of the issues, experiments and facilities for fusion nuclear technology research and development. Interim report. Volume I

The following chapters are included in this study: (1) fusion nuclear issues, (2) survey of experimental needs, (3) requirements of the experiments, (4) non-fusion facilities, (5) fusion facilities for nuclear experiments, and (6) fusion research and development scenarios. (MOW)

Date: October 1, 1984

Creator: Abdou, M.

Object Type: Report

System: The UNT Digital Library

(open access)

FINESSE: study of the issues, experiments and facilities for fusion nuclear technology research and development. Interim report. Volume III

This chapter deals with the analysis and engineering scaling of solid breeded blankets. The limits under which full component behavior can be achieved under changed test conditions are explored. The characterization of these test requirements for integrated testing contributes to the overall test matrix and test plan for the understanding and development of fusion nuclear technology. The second chapter covers the analysis and engineering scaling of liquid metal blankets. The testing goals for a complete blanket program are described. (MOW)

Date: October 1, 1984

Creator: Abdou, M.

Object Type: Report

System: The UNT Digital Library

(open access)

Magnetic Fusion Energy Plasma Interactive and High Heat Flux Components. Volume II. Technical Assessment of the Critical Issues and Problem Areas in High Heat Flux Materials and Component Development

A technical assessment of the critical issues and problem areas for high heat flux materials and components (HHFMC) in magnetic fusion devices shows these problems to be of critical importance for the successful operation of near-term fusion experiments and for the feasibility and attractiveness of long-term fusion reactors. A number of subgroups were formed to assess the critical HHFMC issues along the following major lines: (1) source conditions, (2) systems integration, (3) materials and processes, (4) thermal hydraulics, (5) thermomechanical response, (6) electromagnetic response, (7) instrumentation and control, and (8) test facilities. The details of the technical assessment are presented in eight chapters. The primary technical issues and needs for each area are highlighted.

Date: June 1, 1984

Creator: Abdou, M. A.; Boyd, R. D.; Easor, J. R.; Gauster, W. B.; Gordon, J. D.; Mattas, R. F. et al.

Object Type: Report

System: The UNT Digital Library

(open access)

MACK-IV, a new version of MACK: a program to calculate nuclear response functions from data in ENDF/B format

MACK-IV calculates nuclear response functions important to the neutronics analysis of nuclear and fusion systems. A central part of the code deals with the calculation of the nuclear response function for nuclear heating more commonly known as the kerma factor. Pointwise and multigroup neutron kerma factors, individual reactions, helium, hydrogen, and tritium production response functions are calculated from any basic nuclear data library in ENDF/B format. The program processes all reactions in the energy range of 0 to 20 MeV for fissionable and nonfissionable materials. The program also calculates the gamma production cross sections and the gamma production energy matrix. A built-in computational capability permits the code to calculate the cross sections in the resolved and unresolved resonance regions from resonance parameters in ENDF/B with an option for Doppler broadening. All energy pointwise and multigroup data calculated by the code can be punched, printed and/or written on tape files. Multigroup response functions (e.g., kerma factors, reaction cross sections, gas production, atomic displacements, etc.) can be outputted in the format of MACK-ACTIVITY-Table suitable for direct use with current neutron (and photon) transport codes.

Date: July 1, 1978

Creator: Abdou, M. A.; Gohar, Y. & Wright, R. Q.

Object Type: Report

System: The UNT Digital Library

(open access)

Analytical steam injection model for layered systems

Screening, evaluation and optimization of the steam flooding process in homogeneous reservoirs can be performed by using simple analytical predictive models. In the absence of any analytical model for layered reservoirs, at present, only numerical simulators can be used. And these are expensive. In this study, an analytical model has been developed considering two isolated layers of differing permeabilities. The principle of equal flow potential is applied across the two layers. Gajdica`s (1990) single layer linear steam drive model is extended for the layered system. The formulation accounts for variation of heat loss area in the higher permeability layer, and the development of a hot liquid zone in the lower permeability layer. These calculations also account for effects of viscosity, density, fractional flow curves and pressure drops in the hot liquid zone. Steam injection rate variations in the layers are represented by time weighted average rates. For steam zone calculations, Yortsos and Gavalas`s (1981) upper bound method is used with a correction factor. The results of the model are compared with a numerical simulator. Comparable oil and water flow rates, and breakthrough times were achieved for 100 cp oil. Results with 10 cp and 1000 cp oils indicate the need …

Date: August 1, 1993

Creator: Abdual-Razzaq; Brigham, W. E. & Castanier, L. M.

Object Type: Report

System: The UNT Digital Library

(open access)

Evaluation of Texas Home Instruction for Parents of Preschool Youngsters Program on Reading and Math Achievement for Grades K to 8

This study was intended to evaluate the impact of socioeconomically disadvantaged children's participation in the Texas Home Instruction for Parents of Preschool Youngsters (TX HIPPY) Program on their school readiness and academic achievement. The study used a quasi-experimental design and applied full and optimal propensity score matching (PSM) to address the evaluation concern of the impact of the TX HIPPY program on HIPPY participants' academic achievement compared to non-HIPPY participants. This evaluation targeted former HIPPY participants and tracked them in the Dallas ISD database through Grade Levels K-8. Data were obtained by administering Istation's Indicators of Progress (ISIP) for kindergarten, TerraNova/SUPERA for Grades K-2, and State of Texas Assessments of Academic Readiness for math and reading (STAAR) for Grades 3-8. HIPPY and non-HIPPY groups were matched using propensity score analysis procedures. The evaluation findings show that the TX HIPPY program positively influences kindergarten students to start school ready to learn. The findings of math and reading achievements suggest that HIPPY children scored at the same level or higher than non-HIPPY children did on math and reading achievement, indicating that TX HIPPY program has achieved its goal of helping children maintain long-term academic success. However, the evaluation findings also indicated that …

Date: August 2019

Creator: Abdulaziz, Noor Amal Saud

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Effective and efficient optics inspection approach using machine learning algorithms

The Final Optics Damage Inspection (FODI) system automatically acquires and utilizes the Optics Inspection (OI) system to analyze images of the final optics at the National Ignition Facility (NIF). During each inspection cycle up to 1000 images acquired by FODI are examined by OI to identify and track damage sites on the optics. The process of tracking growing damage sites on the surface of an optic can be made more effective by identifying and removing signals associated with debris or reflections. The manual process to filter these false sites is daunting and time consuming. In this paper we discuss the use of machine learning tools and data mining techniques to help with this task. We describe the process to prepare a data set that can be used for training and identifying hardware reflections in the image data. In order to collect training data, the images are first automatically acquired and analyzed with existing software and then relevant features such as spatial, physical and luminosity measures are extracted for each site. A subset of these sites is 'truthed' or manually assigned a class to create training data. A supervised classification algorithm is used to test if the features can predict the …

Date: November 2, 2010

Creator: Abdulla, G.; Kegelmeyer, L.; Liao, Z. & Carr, W.

Object Type: Article

System: The UNT Digital Library

(open access)

The fluid systems for the SLD Cherenkov ring imaging detector. [01]

We describe the design and operation of the fluid delivery, monitor and control systems for the SLD barrel Cherenkov Ring Imaging Detector (CRID). The systems deliver drift gas (C[sub 2]H[sub 6] + TMAE), radiator gas (C[sub 5]F[sub 12] + N[sub 2]) and radiator liquid (C[sub 6]F[sub 14]). Measured critical quantities such as electron lifetime in the drift gas and ultra-violet (UV) transparencies of the radiator fluids, together with the operational experience, are also reported.

Date: October 1, 1992

Creator: Abe, K.; Hasegawa, K.; Hasegawa, Y.; Iwasaki, Y.; Suekane, F.; Yuta, H. (Tohoku Univ., Sendai (Japan). Dept. of Physics) et al.

Object Type: Article

System: The UNT Digital Library

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