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A Formula To Express Evapotranspiration As A Function Of Soil Moisture And Evaporative Demands Of The Atmosphere, Aldo L. Norero

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A mathematical expression was developed and tested which describes the relation between evapotranspiration and soil moisture. A general premise of this mathematical model is that the evapotranspiration-soil moisture relationship is determined by interaction of climatic, soil and plant factors. The basic model is

dETa/dYs = -ke[1-(ET_a/ET_mx)]

in which ET_a is the actual evapotranspiration, Ψ_s is the total soil water potential, k is a proportionality coefficient, ∈ is the soil moisture extraction capacity of the atmosphere , and ET_mx is the evapotranspiration that would occur from a particular crop-soil unit when soil moisture was …

Development Of A Low-Fat Spread, Clair L. Hicks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A stable low-fat water-in-oil emulsion was satisfactorily prepared from milk-fat under laboratory conditions. The best product contained 40 per cent fat, 56.8-57.3 per cent water, 0.8 per cent sodium carboxymethyl cellulose, 0.7-1.2 per cent milk solids-non-fat, and 1.2 percent salt. The spread was prepared equally well from butter or high test cream. When the product was made from cream (containing 74 per cent milk-fat) it was necessary to convert most of the globular fat to free fat prior to forming an emulsion. Globular fat in cream was successfully changed to free fat by homogenization at 2500 pounds per square inch …

Rennin Content Of Abomasa From Bovine Fetuses, Suk Hoon Pang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rennet extract is an important commercial enzyme preparation which is indispensable to the cheese making industry, The term "rennet" is used to denote the enzyme system extracted from the fourth stomach (abomasum) of a suckling calf. Most of the enzymatic material in the extract is rennin. It also contains a small amount of pepsin(15) and some other proteolytic enzymes(4). The amount of pepsin in rennet extract appears to depend upon the age of the calves at the time of slaughter(31).

Catalytic Effect Of Soil Components On The Nitrite Transformation In Buffer Acid Solutions, Laxman G. Kuratti

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nitrite decomposition in buffer solutions of pH 3, 4, and 5 was observed to be a first order reaction with rate constants (k) 6.39 x 10^-3, 1.15 x 10^-3, and 0.17 x 10^-3, respectively. When 10 grams of two different soils were introduced, the reaction was catalyzed in all three pH conditions studied. This effect, however, was more pronounced in pH 5.

When 10 grams of soil were introduced, all the added nitrite was not recovered. The deficit ranged from 17 to 30 parts per million when 150 parts per million nitrite nitrogen was …

Effect Of Foliar Application Of Urea And Ammonium Nitrate On The Dry Weight And Protein Content Of Maize Plants, Alvaro Fiallos

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Urea and ammonium nitrate were applied to leaves of maize plants growing in growth chambers on nutrient solutions containing three different concentrations of ammonium nitrate. Dry weights, and the soluble protein contents of leaves, sterns and roots we remeasured.

Both urea and ammonium nitrate did increase the dry weights of leaves and stems when ammonium nitrate was used in the nutrient solutions (0.5 and 2.5 mM/ liter). When nitrogen was not used in the nutrient solutions, no increments of dry weight occurred. The protein contents of leaves were increased for plants in the same nutrient solutions that produced increases in …

The Anatomical And Morphological Effects Of Dcpa On Seedlings Of Selected Species Of Plants, Bijan Shaybany

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Seeds of oat, green foxtail, squash and tomato were germinated in soil treated with different levels of DCPA (dimethyl 2, 3, 5, 6-tetrachlorote-rephthalate). The concentrations used varied according to the sensitivity of the plants to the chemical.

The response of oat and foxtail to DCPA was similar. The growth of booth root and shoot was reduced. This reduction was directly related to the concentration of DCPA. Anatomical studies showed that cells in the shoot and root meristems of treated plants were completely disarranged and that some of the cells of these regions were hypertrophied. Some clumping of nuclei was observed …

Survey Of 1968 Graduates Of Home Economics Programs At Intermountain School In Brigham City, Utah, Aty Bakker Bitton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Home Economics Program of Intermountain School in Brigham City, Utah was studied by a survey of graduates of the program of the year 1968. Research data was obtained from two sources: (1) a questionnaire to students who had graduated from the Home Economics Programs of Intermountain School in Brigham City in the year 1968, and (2) a questionnaire to employers of these students.

Findings of the study were that Home Economics education is useful to students in their personal life as well as in post high school training and employment, and that a majority of the employers questioned rated …

An Investigation Of The Relationship Between The Bender-Gestalt, Draw-A-Man, And Wechsler Preschool And Primary Scale Of Intelligence, G. Edward Allen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study investigated the relationship between the Bender-Gestalt, Draw-a-Man, and the Wexler Preschool and Primary Scale of Intelligence. Twenty-two children enrolled in the Logan, Utah Head-Start Program comprised the sample. Product-moment correlations indicated a significant relationship between these instruments.

The following tentative conclusions were drawn:

1. The Wexler Preschool and Primary Scale of Intelligence bears a relationship to the Draw-a-Man and Bender-Gestalt tests similar to that between the Wechsler Intelligence Scale for Children and these instruments.

2. The Bender-Gestalt test, using the Koppitz scoring system, and the Draw-a-Man test can serve a similar checking function with the Wexler Preschool and Primary Scale …

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Spatial Reasoning As Related To Solving "Story Type" Problems, James R. Holder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In this study it was hypothesized that the ability to mentally solve II story type" problems, those presented in the form of sentences, is significantly related to one's spatial reasoning ability and that a weakness in this ability, when tested by the "story type" problems, could be compensated for by training in and utilization of overt "paper and pencil" manipulations.

To test the hypothesis, three measures were used. These were the DAT Verbal Reasoning test--used to control the factor of verbal reasoning, the DAT Space Relations test--used to measure spatial reasoning ability, and two forms of a test composed of …

Behavioral Modification Of Trainable Mentally Retarded Children, Cheryl Mayo Frair

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In Experiment I, contingency management was employed with five non-institutionalized trainable retardates (mean MA=4.l, CA=9.9, and language age=2.6) in a classroom situation. Empirically determined high probability behaviors were displayed as colored cartoon figures in a reinforcement menu. Tasks from the Peabody Language Development Kit defined the behavior strengthened during 15 one-hour sessions. A quantity of low probability task behavior had to occur in order for subjects to emit 4 minutes of high probability reinforcing activity. Through contingency management, amount of task per reinforcement was shaped from a low ratio to a high ratio. Significant gains in language age (p

In …

Retention Of Conservation Acquired By Instructional Methods, Eight Months After Termination Of Instruction, Wenden W. Waite

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study attempted to determine if subjects that had been instructed in the principle of conservation, maintained conservation after termination of instructions. Using subjects from kindergarten to third grade that had received instructions by use of both concrete example and mental imagery methods. Those S's that received instructions were compared with S's that had received no instructions. A test of conservation was administered to a total of 96 S's approximately eight months after termination of instructions to determine if the scores received on a test of those students that had received instructions exceeded those S's that had not received instructions. …

A Comparison Of Methods Used To Predict Success In Ninth Grade Elementary Algebra, Sherry Slade

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study was conducted at North Cache Junior High School in Richmond, Utah, during the 1967-68 school year to determine an effective method of predicting which students would be able to succeed in algebra in the ninth grade. Eighth grade marks in mathematics, two algebra aptitude test scores, and student self-success ratings were compared with the final algebra grades to determine the best single predictor of success in algebra and to determine the best combined predictors of success.

The best single predictor of success in algebra was the student's final mark in eighth grade mathematics. The best combined predictors of …

The Influence Of Color And/Or Movement Added To Thematic Apperception Test To Evoke Need Achievement, Justin Fred Hurst

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study utilized the theories of David C. McClelland and associates regarding affective arousal, concept of cues arousing motives, and neutral testing procedures. The problem was to study the influence of color and/ or movement, as cues added to the McClelland four-picture Thematic Apperception Test, to evoke need achievement responses to determine whether or not the added stimuli of color and/or movement might evoke increased need achievement responses.

Four treatment variations of the test were made: Treatment A, consisted of the standard McClelland test, in black and white pictures. This treatment served as the control. Treatment B used the black …

A Psychological Investigation Of Seven Hermaphroditic Children, Peter Lewis Kranz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An in-depth personality and intellectual evaluation of a group of hermaphroditic children residing in the state of Oklahoma was undertaken in this study. The following techniques were utilized in order to extensively study the impact of this anomaly on the families of these children: psychological tests, parental interviews by a social worker, and diagnostic play interviews conducted by the investigator. It was the purpose of this study to examine the psychological impact of sexual ambiguity on the child and his parents.

There were no significant differences between the two groups on any of the tests given. This may be attributed …

Reading Instruction And Phonetic Control In Materials Development Based Upon Relative Frequency Of Phoneme-Grapheme Correspondences, Richard T. Grow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This dissertation suggests a new approach to reading instruction and phonetic control in materials development. The central feature of this approach is its reliance on phoneme-grapheme correspondence data.

Specifically, the products of this dissertation were (1) the development of relative frequency tables depicting the various phonemes produced by a given grapheme structure, (2) the development of five different levels of phonetic sophistication, (3) the classification of 974 words as regular or irregular in accordance with each level of sophistication, and (4) the phonetic rewriting of three existing short stories to make them phonetically regular.

One of the phonetically rewritten stories …

The Effects Of An Introduction To Psychology Course On College Students' Superstitions And Beliefs Which Have Some Scientific Sanction, Helen Daines Mitchell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study was conducted to investigate the effects of an introduction to psychology course on college students' superstitions and beliefs which have some scientific sanction. The test used was selected from H. K. Nixon's 1925 study on answers to psychological questions and considers 30 statements to be marked true or false.

Subjects used for this study were 100 men and 100 women students in a beginning psychology course at Utah State University, Logan, Utah. The first administration of the questionnaire was given during the first week of the class with a follow-up administration given during the final week of class. …

Effects Of Gold Compounds On Rat Behavior, Jonas Kaye

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Seven rats were trained on Fixed Ratio 20 and two on Fixed Ratio 12 Escape Schedules until a stable baseline was established. Five of the subjects were administered gold thioglucose, three received gold thiomalate, and one was injected with gold, gold thioglucose, and gold thiomalate, allowing for an intrasubject comparison. Colloidal gold appeared to suppress response rate for one or two sessions, while gold thioglucose and gold thiomalate suppressed normal response rates from several to a number of sessions. This response rate suppression was often followed by gradual recovery, although in several subjects recovery of response rate could not be …

A Study Of The Difference In Short-Term Memory Between Seventh Grade Students Rated High And Low In The Ability To Acquire Sport Skills, Vera Jeppesen Watkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study investigated the possibility that the short-term memory factor may be one of the variables involved in the learning of motor skills.

The subjects of the study were all of the seventh grade gym students at Logan Junior High School who were rated by their teachers as being in the upper or lower one-fourth of their class in respect to their abilities in sport skills. After a short-term memory (STM) test developed by the researcher was administered to this group, their scores were compared to determine whether there was a significant difference between the upper and lower one-fourth.

An …

Cpi Achievement Motivation Scales In Differential Prediction Of Academic Achievement, Dwight J. Petersen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The grade-point average (GPA) of 4 groups of college sophomores, representing high and low scores on the CPI Ac and Ai scales, was analyzed to test the hypothesis that conforming and independent achievement motivation (as measured by the CPI) is related to scholastic achievement reflective of conforming or independent behavior. Specific hypotheses regarding differential achievement as a function of Ac and Ai scores were tested and, in general, supported. From this study, it was found that the CPI Ac and Ai scales do provide a basis for differentially predicting the scholastic achievement of students in settings rewarding dependent and/or independent …

Quality Of Beef Roasts: Electronic Versus Conventional Cooking, Frances Glassett Taylor

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of breed, backfat thickness, and methods of cooking on quality of beef roasts was determined by sensory and objective methods. Arm and rib roasts from Hereford, Shorthorn, Charolais, and Shorthorn-Charolais animals were cooked by several methods.

Roasts of the ninth to twelfth ribs were all dry roasted at 325 Farenheit. Boned and unboned roasts (sixth to eighth ribs) were cooked by conventional and electronic methods. Only significant results are reported herein.

Objective tests using the Warner-Bratzler shear indicated roasts of Shorthorn animals to be the most tender of the four breeds.

Sensory analysis by an experienced panel of …

Analysis Of Fruit Juices And Drinks Of Ascorbic Acid Content, Anna Man-Saw Liu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A total of 33 common fruit juices and drinks representing 15 different fruits were analyzed for ascorbic acid content by a slight modification of the method of Loeffler and Ponting (1942). The juices ranged from 0.96 to 50.88 mg per 100 ml. The drinks ranged from 2.12 to 66.10 mg. All the citrus juices ranked high in ascorbic acid content. One drink was fortified with sufficient ascorbic acid to contain considerably more vitamin than was found in pure orange juice.

The ascorbic acid values of different forms of orange drinks and pure orange juices were compared. Except for one brand, …

Effects Of Gamma Radiation In Concurrence With Certain Environmental Conditions On Lethal And Physio-Chemical Responses Of Penicillium Expansum L., Tsong-Wen Chou

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In vitro investigations were conducted to study the lethal effect of gamma radiation on the fruit spoilage fungus Penicillium expansum under certain environmental conditions, and to study some physio-chemical changes in the fungus induced by the radiation which may be related to the death of the fungus or its ability to invade fruits.

The radiation sensitivity of P. expansum conidia was influenced by such factors as nutritional condition of the post-irradiation media, age of the spores, delayed plating, heat treatment, and chemical sensitizers. Higher survival was obtained when irradiated conidia were plated on Czapek solution agar (sugar-salts medium) than on …

Activation Of Prorennin, Nazar A. Shukri

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purified prorennin appeared to be homogeneous when subjected to chromatography on a Diethylaminoethyl-cellulose and to electrophoreses in starch-urea-gel. Crystalline rennin was heterogeneous, and was resolved into six components when analyzed electrophoretically. When crystalline rennin was chromatographed on a column of Diethylaminoethyl-cellulose two distinguishable peaks were observed which corresponded to B- and C-rennin. Unlike crystalline rennin, rennin freshly activated at pH 2.0 or 5.0 was essentially homogeneous.

Rennin resulting from activation at pH 2.0 and 5.0 appeared to be different. Rennin activated at pH 5.0 was eluted faster from Diethylaminoethyl-cellulose column, and moved slightly faster in starch-urea-gel electrophoresis, than rennin activated …

Accounting For Milk Protein In Equivalents By Dye Binding Analysis Of Cheese And Whey, Prahlad H. Patel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Each of thirteen lots of Cheddar cheese was made from 430 lb. of milk, and the protein recovered in the cheese and whey was compared with that in the original milk. Protein determinations on the milk, cheese and whey were made by an acid orange 12 dye binding test, and by Kjeldahl analysis. Similarly fat recovery was determined by using the Babcock fat test on milk, the modified Babcock test on cheese, and the Mojonnier test on whey. The total weight recovered as cheese and whey was 99 ± .6% by Kjeldahl analysis and 97.7 ± .6% by the dye …

The Contribution Of Summer Tourism To The Utah Economy, William D. Brakel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The increase in household income attributed to expenditures by Utah motor vehicle tourists from June 15 to September 5, 1969, was estimated using income multipliers from input-output analysis. Tourist expenditures were gathered through the distribution of postage-paid diaries to non-residents entering Utah. Expenditures were also segregated for Cache County, Utah. The income multipliers from state and county input-output models were used to estimate the impact of applying the state model to county data.

Approximately 927,250 tourist parties to Utah spent an estimated $37,842,816, increasing household income $65,018,557. Likewise, approximately 67,709 tourist parties spent an estimated $798,966 in Cache County. The …

The Hyrum And Beirdneau Formations Of North-Central Utah And Southeastern Idaho, James F. Eliason

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Hyrum and Beirdneau Formations of North-central Utah and Southeastern Idaho represent rocks of late Middle Devonian (Givetian) to upper Upper Devonian (Famennian) age. They are disconformably underlain by the Early Devonian Water Canyon Formation in most cases and disconformably overlain by the Devonian-Mississippian Leatham Formation or the Mississippian Lodgepole Formation.

The Hyrum Formation is divided into five members based on lithology and color changes. The five members are: (1) Samaria, (2) Lower Dolomite, (3) Lower Carbonate-detritus, (4) Upper Dolomite, and (5) Upper Carbonate-detritus Members. The Samaria Member is the only fossiliferous unit within the Hyrum Formation.

The Beirdneau Formation …

Comparative Cost And Quality Studies Of Dehydrated Vegetables Versus Fresh Vegetables Used In Institutional Food Services, Kathleen Olsen Wegener

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The cost of fresh and dehydrated vegetables was studied in terms of initial cost and labor cost. Three institution kitchens were used: Logan Church of Jesus Christ of Latter-day Saints Hospital, Logan Senior High School, and the High Rise Cafeteria at Utah State University. Beans, celery, onions, peas, green peppers, diced potatoes, shredded potatoes, sliced potatoes, and whipped potatoes were included in the research.

Fresh vegetables were found to have lower initial cost. Labor costs were lower for dehydrated vegetables. In the preparation of 25 pounds of vegetables the total cost of dehydrated vegetables was less than that of fresh …

Survival And Distribution Of Rennin During Cheddar Cheese Manufacture, John Ta-Chuang Wang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Residual rennin in cheese whey and curd was measured by using a special sensitive substrate. The substrate was made by reconstituting 6 g NDM in 500 ml of buffer containing 0.2 M CaCl₂, 0.5 M cacodylic acid and 0.2 M triethanolamine at pH 5.7. Cheese curd was blended into a 1:7 slurry (1 part curd, 7 parts water), and 1.67% sodium chloride was added to the whey and slurry to liberate residual rennin from casein. The residual rennin in cheese whey and slurry were determined simultaneously with an identical sample containing known rennin activity. Samples with known activity …

Effect Of Different Levels Of Dietary Protein And Sex Hormones On Lipid Metabolism In Male Castrated Rats, Sharad Patel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Male castrated rats treated with testosterone or estradiol were given a diet containing 9, 18, or 50 per cent protein. Total lipids, lipid classes and fatty acid composition of lipid classes were determined.

Estradiol treated rats grew slower, smaller and consumed less diet. Their liver weights were larger when compared to their body weights. Moisture content of liver remained unaffected by sex hormones, but increased with the high level of protein in the diet.

Both testosterone and estradiol affected lipid metabolism; in general, the estrogenic influence was more pronounced and more predictable. Estradiol administration increased total lipids, free and esterified …

Adaptation To Dietary Protein Of Nitrogenous Components In Blood And Urine, Whang Hea Kim

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study was made of the adaptation to dietary protein of nitrogenous components in blood and urine of rats and humans. Forty-four mature male rats were adapted to a low protein diet (10 per cent casein diet) for three weeks before they were divided into two groups. Four rats were then killed for a control, and twenty of the remaining rats were switched to a high protein diet (40 per cent casein diet) and the other twenty continued to be fed the low protein diet. Four rats fed each level of protein were killed 2, 4, 6, 8, and 10 …