Theses and Dissertations
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Item A method of obtaining arbitrary surface temperature distributions of flat plate for use in aerodynamic research(University of Alabama Libraries, 1951) Gustafson, Kendall ArthurWith the advent of thermal ice-prevention equipment for aircraft, the problem of determining the heat which maybe transferred from the surface of aerodynamic bodies has become one of considerable interest. Experimental investigations have indicated that adequate heating of the forward ten to twenty per cent of an airfoil will prevent ice formation on the entire airfoil. The boundary-layer characteristics of an airfoil immersed in a moving fluid are a region of laminar flow, a region of transition from laminar to turbulent flow and finally a region of turbulent flow. Up to the present time, flat plates have been used a great deal in the investigation of boundary-layer characteristics because the flow phenomenon associated with aerodynamic shapes, with the exception of separation, are similar to the flow conditions over a flat plate. In heat transfer applications the flat plate, by its characteristic shape, makes experimental investigations and theoretical calculations much simpler. By conditions of similarity, the results of these investigations and calculations may be applied to aerodynamic shapes. This investigation was carried on to determine if a thin flat plate could be heated electrically so that various surface-temperature distributions could be applied at will. This method was to remove from the interior of the wind tunnel the various encumberances and restrictions to flow that are associated with the present methods of heating surfaces. The flexibility of this method eliminates the need of a separate flat plate for each individual surface temperature distribution. By the use of a thin metal sheet, airfoils of any cross-sectional shape could be formed and then given various surface temperature distributions. It is believed that any or all of these features can be used to advantage in the experimental verification of existing boundary-layer flow and heat-transfer theories.Item Analysis and synthesis of active quadratic filter networks for telemetry applications(University of Alabama Libraries, 1969) Gussow, Sidney SeymourActive filter designs offer many advantages for use in telemetry systems but are seldom used. The main obstacle is that conventional active designs are accurate only for low frequencies, usually below 1 kHz. For frequencies above 10 kHz, the designs can be grossly inaccurate. To rectify this limitation, an active filter design capability is presented and developed that is applicable for frequencies up to 500 kHz. This covers most of the frequency range required for telemetry filter applications. Accurate network models are developed from conventional active networks that have been expanded to consider additional parameters. Mathematical equations describing the networks are developed and their characteristics are analyzed. Synthesis techniques and equations are developed from the network models that are accurate enough to realize a filter response to within a few percent of the specified response. Various network parameters are discussed with relation to their effect on the filter response. Computer-aided filter design programs are presented which perform all the complex calculations required for analysis and synthesis of these active networks. The advantages of active designs over passive designs include; elimination of inductive components, smaller size, less signal attenuation, ease of circuit assembly due to elimination of complex tuning procedures, and the ability to fabricate the filter in integrated circuit form.Item The effect of kind and amount of fat on some characteristics of plain muffins(University of Alabama Libraries, 1961) Gunsallus, Mabel FrancesThis study was planned to determine (a) whether a relatively inexpensive fat such as corn oil could be substituted for other fats and still produce a good quality muffin, (b) to what extent the amount of corn oil influences the quality of muffins, and (c) what range of amounts of corn oil could be used in muffins and still maintain a quality product. Three fats, hydrogenated shortening, margarine and corn oil, were selected. The weighed amounts of corn oil corresponding to 1, 2, 3, 4, 5 and 6 tablespoonfuls of corn oil were used in the basic recipe. Volume, height, grain, color and compressibility were evaluated. The muffins were scored by judges.Item Laboratory and sensory evaluation of beef-soy protein(University of Alabama Libraries, 1978) Gunn, Donna JeanGround beef-textured soy flour patties that contained fat levels of 15, 20, and 30% and hydrated soy (0, 20, and 30%) were evaluated. Height, diameter, fat, moisture, and pII measurements on raw and cooked patties at each fat-soy combination were determined. In addition, tenderness of cooked patties was evaluated by Warner Bratzler Shear Apparatus measurements. Cooked patty quality also was assessed by an untrained 34-member taste panel. Data were treated with multivariate analysis of variance and covariance, general analysis of variance, discriminant analysis on principal components, and Duncan's new multiple range test . Significant (P<0.01) results on raw patty data indicated that as soy level increased, fat level decreased, while moisture level and pH increased. Only soy level significantly affected cooked patty data. As soy level increased, diameter and fat level decreased, while moisture level and pH increased. Taste panel assessment results indicated significant differences on juiciness, flavor, and overall evaluation of cooked patties, attributable to various fat-soy interactions.Item The direct method of Lyapunov and application to the stability question of finite regions of the phase space(University of Alabama Libraries, 1962) Gunderson, Robert WilliamItem A quantitative and qualitative pollen survey for one year in Birmingham, Ala.(University of Alabama Libraries, 1954) Gulledge, Mary AnneItem The use of nitric oxide as a diazotizing agent(University of Alabama Libraries, 1952) Gulledge, Erwin LoweItem Gustavus Vasa Fox(University of Alabama Libraries, 1942) Guin, Jessie EvelynItem A frequency response analysis of the dynamics of physical gas adsorption(University of Alabama Libraries, 1966) Guin, James A.Item A proposed camping program for the white public schools of Alabama(University of Alabama Libraries, 1947) Guilford, Thomas WatsonItem An eighteenth century essay on national song(University of Alabama Libraries, 1955) Gruber, Albion Matthew, Jr.Item The synthesis and characterization of some transition metal-containing polymers and analogous organometallic monomers.(University of Alabama Libraries, 1972) Grube, Paul LoisItem The socio-economic status of the graduates and certain other students of the Gordo high school during the period of 1924-1936, inclusive(University of Alabama Libraries, 1939) Grubbs, W. L.The problem undertaken in this study is to determine whether the students enrolled in and graduated from Gordo High School (Pickens County, Alabama) during the period of 1924 to 1936, inclusive, were a select group in terms of certain socio-economic factors. The socio-economic factors used are as follows: 1. Land ownership 2. Size of land holdings 3. The occupations of the parents who are non-farmers A standard socio-economic scale was used as a basis for the classification of these occupations.Item Measuring plant productivity in the airframe industry(University of Alabama Libraries, 1950) Grottle, George TiborThe intent of this study is to survey the considerations and methods involved in the measurement of plant productivity in airframe manufacture. In so doing it is proposed to develop refinements in measurement and to introduce the concept of “complexity factor" as a means of explaining the existing wide variations in plant productivity.Item A study of the feasibility of the unionization of the retail clothing clerks in Tuscaloosa, Alabama(University of Alabama Libraries, 1967) Grosse, Vinson GaryThe purpose of the study is to explore the attitudes of selected retail clothing employers and union leaders toward the unionization of the clerks in the retail clothing firms in Tuscaloosa. The study examines the changes in the social and economic conditions of Tuscaloosa that might influence the attitudes of the respondents. From this information a conclusion will be drawn concerning the feasibility of the unionization of the local retail clothing clerks. Some of the general questions that are analyzed are: How would the attitudes of union leaders affect a unionization attempt? How would the attitudes of employers influence a unionization attempt? What are the major discernible differences between these various attitudes? To what extent do the social and economic conditions in Tuscaloosa affect the possibility of a successful unionization attempt?Item The history of certain protestant groups in Brazil(University of Alabama Libraries, 1945) Grosse, Vernon CharlesItem The effects of certain chemical agents on Myxococcus xanthus(University of Alabama Libraries, 1967) Grosse, Van HollsItem A pedagogical approach to the problem of articulation and bowing in the Bartók Sonata for violin(University of Alabama Libraries, 1966) Gross, Elizabeth FlowersItem Oscillations associated with pump-inducer systems(University of Alabama Libraries, 1966) Gross, Loren A.Item Growth studies on ulotrichalean algae(University of Alabama Libraries, 1963) Groover, Robert Don