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Nuclear-related training and education offered by academic institutions (less-than-baccalaureate degree)

Description: Current projections indicate that in addition to the 10,100 technician positions and 6100 existing operator positions in the nuclear power industry, another 9100 technicians and 9700 operators will be required over the next decade. With 56 nuclear plants currently in operation and an additional 35 plants under construction, it is essential that trained technical personnel be available for employment in the nuclear utilities. Because of the growing demand for technicians in the nuclear utility industry, this report has been prepared to identify the nuclear-related, less-than-baccalaureate, technical educational programs provided by academic institutions and to ascertain both the current number of students and the maximum number that could be trained, given present staff and facilities. The data serve as a gauge for the proportion of technician training required by the nuclear industry that can be provided by academic institutions.
Date: January 1, 1982
Creator: Howard, L.
Partner: UNT Libraries Government Documents Department

"S" Glass Manufacturing Technology Transfer

Description: A glass-ceramic-to metal sealing technology patented by Sandia National Laboratories, Albuquerque (SNLA) was developed by MRC-Mound for use in the manufacture of weapon components. Successful implementation attracted increasingly widespread weapon use of this technology. "S-glass" manufacturing technology was transferred to commercial vendors to ensure that weapons production schedules would be met in the coming years. Such transfer also provided sources of this fledgling technology for the Department of Defense (DOD), aerospace and other commercial uses. The steps involved in the technology transfer are described, from the initial cooperative development work of Sandia and Mound scientists and technologists to the final phase of qualifying commercial vendors for component manufacture.
Date: June 1, 1988
Creator: Buckner, Dean, A. & McCollister, Howard, L.
Partner: UNT Libraries Government Documents Department

Buffeting of External Fuel Tanks at High Speeds on a Grumman F7F-3 Airplane

Description: Attempts were made to alleviate the buffeting of external fuel tanks mounted under the wings of a twin-engine Navy fighter plane. The Mach number at which the buffeting began was increased from 0.529 to 0.640 by streamlining the sway braces and increasing the lateral rigidity of the sway brace system. Further increases of the Mach number, at which buffeting began to 0.725, was obtained by moving the external fuel tank to a position under the fuselage.
Date: January 30, 1947
Creator: Turner, Howard L.
Partner: UNT Libraries Government Documents Department

Buffeting of External Fuel Tanks at High Speeds on a Gruman F7F-3 Airplane

Description: Attempts were made to alleviate the buffeting of external fuel tanks mounted under the wings of a twin-engine Navy fighter airplane. The Mach number at which buffeting began was increased from 0,529 to 0.640 by streamlining the sway braces and by increasing the lateral rigidity of the sway brace system. Further increase of the Mach number, at which buffeting began to 0.725, was obtained by moving the external fuel tank to a position under the fuselage.
Date: January 29, 1947
Creator: Turner, Howard L.
Partner: UNT Libraries Government Documents Department

Molecular mechanisms of radiation-induced genomic instability in human cells

Description: The overall strategy was to create a series of isogenic human cell lines that differ in key elements of cell cycle checkpoint, apoptosis, or DNA repair in response to radiation-induced damage. The goal then was to quantify the fractions of cells within a population that exhibit reduced telomere lengths and relate this to the genetic background of the cell, as well as to the response to ionizing radiation. Association between telomere length and degree of genomic instability in the population is being examined for seven closely related cell lines, that vary in p53 status, bcl-2 status, or ability to repair double strand breaks. Experiments utilize gamma rays at doses of 0, 10, and 200 cGy. During this time period the effort concentrated on generating data with two cell lines. Approximately one-third of the required clones were isolated, and analyses for mutagenesis and chromosome aberrations were undertaken.
Date: February 13, 2003
Creator: Liber, Howard L.
Partner: UNT Libraries Government Documents Department

Preliminary investigation of spoiler lateral control on a 42 degree sweptback wing at transonic speeds

Description: Investigation at transonic speeds in the high-speed 7- by 10-foot tunnel to determine the rolling-effectiveness characteristics of a spoiler on a double-wedge-type semispan wing with a sweepback angle of 42 degrees. Results regarding the variation of rolling-moment coefficient, spoiler effectiveness, and rolling effectiveness are provided.
Date: August 12, 1947
Creator: Schneiter, Leslie E. & Ziff, Howard L.
Partner: UNT Libraries Government Documents Department

A comparison with flight data of vertical-tail loads in various maneuvers estimated from sideslip angles and rudder deflections

Description: Report presenting a comparison of the vertical-tail loads determined from pressure-distribution measurements in flight in various maneuvers with the corresponding vertical-tail loads. Some of the maneuvers investigated included slow rolls, steady sideslips, fishtails, and rolling pull-outs.
Date: December 11, 1947
Creator: Turner, Howard L.
Partner: UNT Libraries Government Documents Department

Molecular Mechanisms of Radiation-Induced Genomic Instability in Human Cells

Description: There are many different model systems that have been used to study chromosome instability. What is clear from all these studies is that conclusions concerning chromosome instability depend greatly on the model system and instability endpoint that is studied. The model system for our studies was the human B-lymphoblastoid cell line TK6. TK6 was isolated from a spontaneously immortalized lymphoblast culture. Thus there was no outside genetic manipulation used to immortalize them. TK6 is a relatively stable p53-normal immortal cell line (37). It shows low gene and chromosome mutation frequencies (19;28;31). Our general approach to studying instability in TK6 cells has been to isolate individual clones and analyze gene and chromosome mutation frequencies in each. This approach maximizes the possibility of detecting low frequency events that might be selected against in mass cultures.
Date: October 31, 2005
Creator: Liber, Howard L. & Schwartz, Jeffrey L.
Partner: UNT Libraries Government Documents Department

Flue gas injection control of silica in cooling towers.

Description: Injection of CO{sub 2}-laden flue gas can decrease the potential for silica and calcite scale formation in cooling tower blowdown by lowering solution pH to decrease equilibrium calcite solubility and kinetic rates of silica polymerization. Flue gas injection might best inhibit scale formation in power plant cooling towers that use impaired makeup waters - for example, groundwaters that contain relatively high levels of calcium, alkalinity, and silica. Groundwaters brought to the surface for cooling will degas CO{sub 2} and increase their pH by 1-2 units, possibly precipitating calcite in the process. Recarbonation with flue gas can lower the pHs of these fluids back to roughly their initial pH. Flue gas carbonation probably cannot lower pHs to much below pH 6 because the pHs of impaired waters, once outgassed at the surface, are likely to be relatively alkaline. Silica polymerization to form scale occurs most rapidly at pH {approx} 8.3 at 25 C; polymerization is slower at higher and lower pH. pH 7 fluids containing {approx}220 ppm SiO{sub 2} require > 180 hours equilibration to begin forming scale whereas at pH 8.3 scale formation is complete within 36 hours. Flue gas injection that lowers pHs to {approx} 7 should allow substantially higher concentration factors. Periodic cycling to lower recoveries - hence lower silica concentrations - might be required though. Higher concentration factors enabled by flue gas injection should decrease concentrate volumes and disposal costs by roughly half.
Date: June 1, 2011
Creator: Brady, Patrick Vane; Anderson, Howard L., Jr. & Altman, Susan Jeanne
Partner: UNT Libraries Government Documents Department

A flight and analog computer study of some stabilization and command networks for an automatically controlled interceptor during the final attack phase

Description: Report presenting studies of the final attack phase of an automatically controlled interceptor in flight and electronic simulators to investigate various airplane command and stabilization networks and to develop simple but adequate simulation techniques for the synthesis of automatic control systems. Results regarding automatic control with a simple command system, automatic control with the improved command system, and evaluation of the automatic control system in typical final attack maneuvers are provided.
Date: March 23, 1955
Creator: Turner, Howard L.; Triplett, William C. & White, John S.
Partner: UNT Libraries Government Documents Department

Flight determined buffet boundaries of ten airplanes and comparisons with five buffeting criteria

Description: Report presenting the flight-determined buffet boundaries of ten airplanes. Comparisons are made with five possible buffeting criteria related to airfoil-section characteristics. The primary factors that determine buffeting criteria are critical Mach number, Mach number of sonic flow at the crest, lift-divergence Mach number, lift-peak Mach number, and empirical buffeting criterion are provided.
Date: January 5, 1951
Creator: Gadeberg, Burnett L. & Ziff, Howard L.
Partner: UNT Libraries Government Documents Department

Flight testing by radio remote control-flight evaluation of a beep-control system

Description: Report presenting handling-quality flight tests using an SB2C-5 drone under radio remote control from an F6F-5 control plane. Similar tests were conducted with the drone under manual control. The beep-type, remote-control system investigated was generally satisfactory for flight testing an airplane via remote control, including take-off and landings.
Date: March 1955
Creator: Turner, Howard L.; White, John S. & Van Dyke, Rudolph D., Jr.
Partner: UNT Libraries Government Documents Department

Distribution of normal component of induced velocity in lateral plane of a lifting rotor

Description: From Summary: "Values of nondimensional normal component of induced velocity in the lateral plane of a uniformly loaded lifting rotor are given in the form of graphs and tables. The values were computed by use of the Biot-Savart relation using the assumption that the wake vortex distribution consists of a uniform, semi-infinite elliptic cylinder. The necessary auxiliary equations are given so that the graphs or tables of the induced velocity ratios nay be used to estimate numerical values of the normal component of induced velocity and the associated flow angle in the lateral plane of any given rotor or set of laterally disposed rotors."
Date: December 1956
Creator: Castles, Walter, Jr. & Durham, Howard L., Jr.
Partner: UNT Libraries Government Documents Department

Compressive-strength comparisons of panels having aluminum-alloy sheet and stiffeners with panels having magnesium-alloy sheet and aluminum alloy stiffeners

Description: Report presenting comparisons of 24S-T aluminum-alloy flat compression panels with longitudinal Z-section stiffeners and panels with flat FS-1E magnesium-alloy sheet and longitudinal 24S-T aluminum-alloy Z-section stiffeners. The use of the composite magnesium-alloy, aluminum-alloy construction permits wider stiffener spacing with little to not loss in structural efficiency or stress for local buckling. Results regarding stiffener spacing, proportions, and consideration of the different material constructions are provided.
Date: April 1947
Creator: Dow, Norris F.; Hickman, William A. & McCracken, Howard L.
Partner: UNT Libraries Government Documents Department

Compressive strength of 24S-T aluminum-alloy flat panels with longitudinal formed hat-section stiffeners

Description: Results are presented for a part of a test program on 24S-T aluminum alloy flat compression panels with longitudinal formed hat-section stiffeners. This part of the program is concerned with panels in which the thickness of the stiffener materials is 0.625 times the skin thickness. The results, presented in tabular and graphical form, show the effect of the relative dimensions of the panel on the buckling stress and the average stress at maximum load. Comparative envelope curves are presented for hat-stiffened and Z-stiffened panels having the same ratio of stiffener thickness to sheet thickness. These curves provide some indication of the relative structural efficiencies of the two types of panel.
Date: December 1946
Creator: Schuette, Evan H.; Barab, Saul & McCracken, Howard L.
Partner: UNT Libraries Government Documents Department

Sideslip angles and vertical-tail loads in rolling pull-out maneuvers

Description: Report presenting expressions for calculating the sideslip angles in certain maneuvers and numerical solutions for a wide enough range of variables to permit construction of design charts. Results regarding a comparison of flight and theoretical data and vertical-tail loads are provided.
Date: April 1947
Creator: White, Maurice D.; Lomax, Harvard & Turner, Howard L.
Partner: UNT Libraries Government Documents Department

Gothic Elements in the Novels of Shirley Jackson

Description: The problem with which this paper is concerned is that of tracing Gothic elements in the six complete novels of Shirley Jackson (1919-1965). Jackson's novels, magazine reviews of these novels, articles on Gothicism, and histories of English literature form the sources of data for this research project.
Date: December 1972
Creator: Cook, Bettye Alexander
Partner: UNT Libraries

Reactive barriers for {sup 137}Cs retention

Description: {sup 137}Cs was dispersed globally by cold war activities and, more recently, by the Chernobyl accident. Engineered extraction of {sup 137}Cs from soils and groundwaters is exceedingly difficult. Because the half life of {sup 137}Cs is only 30.2 years, remediation might be more effective (and less costly) if {sup 137}Cs bioavailability could be demonstrably limited for even a few decades by use of a reactive barrier. Essentially permanent isolation must be demonstrated in those few settings where high nuclear level wastes contaminated the environment with {sup 135}Cs (half life 2.3x10{sup 6} years) in addition to {sup 137}Cs. Clays are potentially a low-cost barrier to Cs movement, though their long-term effectiveness remains untested. To identify optimal clays for Cs retention Cs resorption was measured for five common clays: Wyoming Montmorillonite (SWy-1), Georgia Kaolinites (KGa-1 and KGa-2), Fithian Illite (F-Ill), and K-Metabentonite (K-Mbt). Exchange sites were pre-saturated with 0.16 M CsCl for 14 days and readily exchangeable Cs was removed by a series of LiNO{sub 3} and LiCl washes. Washed clay were then placed into dialysis bags and the Cs release to the deionized water outside the bags measured. Release rates from 75 to 139 days for SWy-1, K-Mbt and F- 111 were similar; 0.017 to 0.021% sorbed Cs released per day. Both kaolinites released Cs more rapidly (0.12 to 0.05% of the sorbed Cs per day). In a second set of experiments, clays were doped for 110 days and subjected to an extreme and prolonged rinsing process. All the clays exhibited some capacity for irreversible Cs uptake so most soils have some limited ability to act as a natural barrier to Cs migration. However, the residual loading was greatest on K-Mbt ({approximately} 0.33 wt% Cs). Thus, this clay would be the optimal material for constructing artificial reactive barriers.
Date: May 19, 2000
Creator: KRUMHANSL,JAMES L.; BRADY,PATRICK V. & ANDERSON,HOWARD L.
Partner: UNT Libraries Government Documents Department

A Study of the Effectiveness of Supplemental Instruction on Developmental Math Students in Higher Education

Description: This quasi-experimental study examined the effects of participation in a Supplemental Instruction (SI) program on student test performance in a second-level developmental mathematics class in a four-year university setting. This research deviated from past research on Supplemental Instruction in that it examined effects of the program at the end of each test block rather than at the end of the course only. The quasi-experimental design was precipitated by an inability to control factors of participation and limited sample size. Test data were analyzed using analysis of variance; final course grades were analyzed using chi-square.
Date: May 1995
Creator: Stephens, Jan (Jan Ellen)
Partner: UNT Libraries