Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (16179)
- Physical Sciences and Mathematics (7941)
- Social and Behavioral Sciences (5493)
- Engineering (5445)
- Education (3920)
-
- Environmental Sciences (2957)
- Biology (2708)
- Plant Sciences (2658)
- Agriculture (2332)
- Arts and Humanities (2312)
- Civil and Environmental Engineering (2083)
- Physics (1829)
- Animal Sciences (1810)
- Ecology and Evolutionary Biology (1587)
- Earth Sciences (1564)
- Psychology (1409)
- Entomology (1317)
- Business (1262)
- Forest Sciences (1214)
- Food Science (1100)
- Medicine and Health Sciences (1071)
- Water Resource Management (822)
- Sociology (771)
- Library and Information Science (736)
- Aerospace Engineering (694)
- Nutrition (650)
- Horticulture (627)
- Economics (608)
- Mathematics (527)
- Mechanical Engineering (515)
- Keyword
-
- Utah State University (2509)
- Utah (1832)
- Newspaper (1807)
- USU (1574)
- Minutes (1093)
-
- Utah State University Extension (1084)
- Faculty senate (1076)
- The Utah Statesman (956)
- Statesman (937)
- Student Life (903)
- Agenda (869)
- Educational Policies Committee (840)
- USU Extension (742)
- Utah Agricultural College (717)
- Usu (482)
- Agriculture (451)
- Scanning electron microscopy (447)
- Education (394)
- Design (357)
- Position (354)
- Teacher (339)
- Executive committee (338)
- Management (338)
- UWRL (330)
- Program Proposals (316)
- Family (308)
- Instructor (302)
- Horticulture (300)
- Water (290)
- Regents (280)
- Publication Year
- Publication
-
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (8859)
- Small Satellite Conference (4614)
- All Current Publications (2536)
- The Utah Statesman (1878)
- All Graduate Plan B and other Reports, Spring 1920 to Spring 2023 (1671)
-
- Student Research Symposium (1516)
- Scanning Microscopy (1416)
- Educational Policies Committee (1338)
- Undergraduate Honors Capstone Projects (1091)
- All Archived Publications (1075)
- Aspen Bibliography (922)
- All Graduate Theses and Dissertations, Fall 2023 to Present (858)
- Human–Wildlife Interactions (846)
- Faculty Senate & Faculty Senate Executive Committee (837)
- Utah Space Grant Consortium (834)
- Blog Posts (791)
- Wildlife Damage Management Conference (764)
- Biology (697)
- All Physics Faculty Publications (658)
- Reports (590)
- Wildland Resources Faculty Publications (584)
- USU Student Folklore Fieldwork (573)
- The Characterization and Radiometric Calibration for Remote Sensing Annual Meeting (CALCON) (544)
- Natural Resources and Environmental Issues (504)
- Applications for Staff Employments Faculty, Student and Graduate (484)
- All U.S. Government Documents (Utah Regional Depository) (469)
- College of Engineering News (466)
- Civil and Environmental Engineering Faculty Publications (461)
- Economic Research Institute Study Papers (461)
- Space Dynamics Laboratory Publications (394)
- Publication Type
Articles 50221 - 50250 of 57396
Full-Text Articles in Entire DC Network
A Review Of Commercial Renewal Districts With Possible Applications To Logan, Utah, Maw-Shyong Jean
A Review Of Commercial Renewal Districts With Possible Applications To Logan, Utah, Maw-Shyong Jean
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis identifies and reviews problems of and the methodology for solving these same problems that confront many of the central business districts in most cities in the United States. Population. street systems, traffic control, parking, and land use as well as street appearance are considered. Problems of congested traffic, shabby, out-of-date and even dilapidated store fronts, as well as pollution, street construction, parking availability are all very real problems in city centers. Contemporary concepts, approaches, ideas of landscape architects and city planners are examined and applied to solving these problems. The commercial district of Logan, Utah is considered, the …
A Comparison Of Conventional And Video Teaching Methods Among Beginning Swimmers At Utah State University, Herald J. Jardine
A Comparison Of Conventional And Video Teaching Methods Among Beginning Swimmers At Utah State University, Herald J. Jardine
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study was to determine the value, if any, of utilizing the instant playback feature of television videotape replay in teaching the front crawl and elementary backstroke to beginning swimmers at Utah State University.
A review of literature revealed controversy as to the usefulness of the VTR media in teaching selected motor skills.
Subjects consisted of 30 male freshmen and sophomore college students placed into two groups: experimental and control, on the basis of their individual scores on pre-instruction skill testing. The subjects participated in 12 instructional periods of 40-50 minutes. The control group received instruction by …
Complexive Ordering Of Reading Experience Through Grapheme-Phoneme Relative Frequency Control, Wesley K. Roberts
Complexive Ordering Of Reading Experience Through Grapheme-Phoneme Relative Frequency Control, Wesley K. Roberts
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This dissertation develops a word bank based on a series of well defined filters. The basis of this system is grapheme-phoneme relative frequency control. The word bank is designed to be used in developing reading materials at varied degrees of difficulty.
Four short stories were edited as to their grapheme-phoneme relationships. Reading speed and reading comprehension were measured for each student on these stories. All students read a story in the original form and a story in the filtered version.
No difference in reading comprehension were found, but reading speed was significantly higher on three of four stories.
The Effects Of Direction Of Grouping, Type Of Stimuli, And Class Level On Cognitive Equivalence Transformations, Christopher A. Joseph
The Effects Of Direction Of Grouping, Type Of Stimuli, And Class Level On Cognitive Equivalence Transformations, Christopher A. Joseph
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The major purpose of this investigation was to study the structure, attributes, and supplemental aspects of equivalence classifying of words and pictures made by sixth graders, freshmen college students and junior and senior college students . A particular point of interest was whether or not increasing or decreasing the size of the groups results in different types of equivalence classifying. Other minor goals were to determine the effects of direction of grouping, type of stimuli, and class level on unique reasons produced and recall of stimuli.
The results of the study support the thesis that there is a cognitive developmental …
Identity: A Study Of Existential Vs. Social Anchorage, Paul J. Seymour
Identity: A Study Of Existential Vs. Social Anchorage, Paul J. Seymour
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study was to assess the identity anchorage of persons in different societal positions.
Four experimental groups were chosen to represent different societal positions, namely, students, musicians, management personnel, and nonmanagement personnel. There were 93 subjects involved in these four groups. Each subject was presented with an adapted version of the Twenty Statements Test and a questionnaire to obtain biographical data. The statements made on the Twenty Statements Test were then placed into one of the following categories: physical characteristics; social roles and institutions; characteristic ways of acting, feeling or responding in social interaction; and, broad nondifferentiating …
A Comparison Of Two Methods Of Teaching A Remedial Mathematics Course At The Community College, James C. Olsen
A Comparison Of Two Methods Of Teaching A Remedial Mathematics Course At The Community College, James C. Olsen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Problem
This study was concerned with the effectiveness of two different programs for teaching remedial mathematics to community college students. An individualized instruction program, making use of independent study and the small group setting, was compared with the traditional lecture-textbook instruction program to determine if there existed significant differences in (a) the rate of attrition, and (b) mathematics performance. A secondary objective was to determine if significant differences existed between students enrolled in remedial mathematics classes at 9 AM and those enrolled at 12 Noon.
Method
The target population consisted of all students in fourteen community colleges in the Los …
The Validity Of Awarding Credit By Examination In English Composition, Mark Guymon Christensen
The Validity Of Awarding Credit By Examination In English Composition, Mark Guymon Christensen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study investigated the validity of excusing students from composition courses based upon an objective examination.
Utah State University (USU) students who had taken freshman composition courses during the 1970-71 school year when these courses were required of all entering freshman students were divided into two groups: one group was composed of those who had received an "A" or "B" for three freshman composition courses, while the other group had received a- "C" or "D" for the same courses. USU students who had been excused from taking freshman composition courses based on the CLEP General Examination in English Composition (CLEP) …
An Experiment Comparing The Relative Effectiveness Of A Linear And A Context Program In Teaching Some Selected Persian Words With Reference To The Persian Alphabet To English Speaking People, Batool Moghadam
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study was to test the relative effectiveness of a linear and a context program in teaching some selected Persian words to English speaking people.
A survey of the literature did not reveal studies closely related to the present study, but it revealed studies verifying the usefulness of programed instruction in general, and also some limited attempts made to set up programs for teaching Persian to Americans. There has been increasing attention by educators to programed instruction in the last fifteen years. The idea was also supported that there is a need in the United States for …
The Effects Of Teaching Methods, Experimental Procedures, Grading, And Exam Frequency On The Academic Performance Of Students In Higher Education, Paul William Robinson
The Effects Of Teaching Methods, Experimental Procedures, Grading, And Exam Frequency On The Academic Performance Of Students In Higher Education, Paul William Robinson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study was to demonstrate a new approach in the analysis of teaching procedures, and show the importance of certain variates on the academic performance of college students.
Objectives
The objectives of this study were threefold:
-
To determine whether an ABA approach (definition on page 19) can be used effectively to identify relevant variables influencing college student's academic performance.
-
To determine the influence of grading and exam frequency on achievement in college.
-
To compare the effectiveness of a lectureless go-at-your-own-pace teaching procedure and lecture procedures on student performance as measured on a final exam and a six …
Group Treatment Of Insomnia In Psychiatric Patients Through Relaxation Training, Richard Robert Weber
Group Treatment Of Insomnia In Psychiatric Patients Through Relaxation Training, Richard Robert Weber
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The present study investigated the effects of progressive relaxation training using an abridged form of Jacobson's (1938) relaxation exercises on the mean number of nocturnal sleep disturbances in a group of psychiatric inpatients. Nocturnal time-sampling observations were made during a 14 day base line to select Ss who averaged 1.5 sleep disturbances per night. Six women, ranging in age from 23 to 56 years, were classified as problem sleepers and were moved to a common bedroom, where a second 16 day base line was taken to control for changes in the nocturnal environment. After a brief introduction and demonstration, …
Mormon Myth Or Monopoly: A Contemporary Study To Determine The Perceived Influence Of The Mormon Church On Utah Politics, Douglas S. Foxley
Mormon Myth Or Monopoly: A Contemporary Study To Determine The Perceived Influence Of The Mormon Church On Utah Politics, Douglas S. Foxley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study was to determine the attitudes, opinions, and beliefs of Utah residents concerning what role, if any, the L.D.S. Church should play in Utah politics; if they believe in the concept of a separation of church and state; whether they feel a separation of church and state exists in Utah; and how much influence they perceive the predominant faith of the state has on its politics.
Thus, the four following hypotheses were designed:
1. Utah residents will perceive that churches should be involved in moral, but not political issues.
2. Utah residents will perceive that there …
Cytogenetic Effects Of Vitavax Fungicide On Secale Cereale On Allium Cepa, Jack Ernest Staub
Cytogenetic Effects Of Vitavax Fungicide On Secale Cereale On Allium Cepa, Jack Ernest Staub
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The effects of Vitavax fungicide (2,3-dihydro-5-carboxanilido-6-methyl-1,4-oxathiin) on meiotic chromosomes of rye (Secale cereale) and mitotic chromosomes of onion (Allium cepa) and rye were observed.
The principal aberrations recorded in pollen mother cells of rye were: 1-4 univalents at metaphase I; sticky bridges at telophase I; and micronuclei and misshapen nuclei at the quartet stage.
The principal aberrations recorded in root tip mitoses in onion and rye were: chromosome fragmentation, disintegration, clumping, aggregation and inhibition of mitosis.
All meiotic phases were significantly affected by 1,000, 5,000,10,000, 33,300, 66,600 ppm Vitavax at the 48, 72, and 96 hour …
Regulation Of Rabbit Testicular Capsular Motility: Prostaglandins, Sex Steroids, And Sympathomimetic Agents, Rod R. Seeley
Regulation Of Rabbit Testicular Capsular Motility: Prostaglandins, Sex Steroids, And Sympathomimetic Agents, Rod R. Seeley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Smooth-muscle active compounds were extracted from rat and rabbit testicular homogenates, and from bathing media of rabbit testicular capsular preparations and were tentatively characterized as prostaglandins. The endogenous prostaglandins were responsible for spontaneous testicular capsular contractions in vitro, but were not solely responsible for spontaneous testicular capsular motility in vivo. In this respect, significantly greater concentrations of prostaglandins were extracted from bathing media from spontaneously contracting capsules in vitro than from inactive capsules in vitro or spontaneously contracting capsules in vivo. No significant difference was observed in the amount of prostaglandin extracted from the bathing media of …
Control Of Rat Testicular Monoamine Oxidase Activity: Age, Seasonality, Melatonin, Hcg, Fsh, Starvation And Irradiation, Ronald Lee Urry
Control Of Rat Testicular Monoamine Oxidase Activity: Age, Seasonality, Melatonin, Hcg, Fsh, Starvation And Irradiation, Ronald Lee Urry
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A number of investigations were undertaken to determine what factors control testicular MAO activity. Activity was high in neonatal rats (19 g - body weight), showed a reduced activity at 53 g, was increased at 145-235 g and showed a progressively reduced activity at 415 g, 482 g and 650 g. Hypophysectomy of immature male rats at 3 weeks of age, or mature rats at 10 weeks of age, significantly reduced testicular weight and total MAO activity as calculated on a per animal basis. The specific activity of the enzyme, as expressed on a per mg of tissue basis, was …
Temperature Effect On Leaf Water Potential Measurements, Rex J. Prosser
Temperature Effect On Leaf Water Potential Measurements, Rex J. Prosser
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Silver foil psychrometers were used to monitor water potential in different portions of maize leaves which were subjected to temperature gradients. The psychrometers were preliminarily calibrated over standard NaCI solutions at temperatures ranging from 5°C to 45°C in an aluminum plate apparatus designed to provide uniform temperatures within each psychrometer even while overall temperature was changing. Based on the calibrations, empirical temperature correction equations were derived and used to correct psychrometer readings at different temperatures to equivalent values at 25°C. Temperatures on a single maize leaf were varied by placing the long leaf through an insulated box with several compartments …
Biology Of Mimulus Guttatus In Thermal Areas In Yellowstone National Park, Wyoming, Barbara Rice
Biology Of Mimulus Guttatus In Thermal Areas In Yellowstone National Park, Wyoming, Barbara Rice
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Mimulus guttatus populations in Yellowstone Park were studied in relation to their thermal habitat. Thermal areas have an extra-solar heat source, and are not snow covered in winter. Snow depth on adjacent non thermal soils may exceed 1 meter. The hypothesis that these populations have formed a distinct high temperature tolerant race was tested.
Thermal populations form two categories, based on habitat type: plants on sinter and plants in boggy areas. Plants growing on sinter are dwarfed, with an average height of 5.6 ±. 2.2 cm. They are facultative annuals which germinate in the fall, overwinter as rosettes, and flower …
Incorporation Of Protoporphyrin Ix Into Chlorophyll A And Purification And Properties Of (-) S-Adenosyl-L-Methionine-Magnesium Protoporphyrin Ix Methyltransferase, Jii Shieh
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Experiments on the incorporation of 14C-protoporphyrin IX into chlorophyll indicate that ferrous iron may be involved in reactions between protoporphyrin IX and chlorophyll. Experiments using both health and chlorotic tobacco tissue for incorporation studies show that incorporation of protoporphyrin IX into chlorophyll was activated by Fe2+.
S-adenosylmethionine-magnesium protoporphyrin IX methyltransferase (E.C.2.1.1.11) which catalyzes the reaction between S-adenosylmethionine and Mg protoporphyrin IX to form S-adenosylhomocysteine and Mg protoporphyrin IX monomethyl ester was demonstrated in barley seedlings. Methyltransferase was found principally in whole chloroplasts and fractions containing mitochondria were disintegrated chloroplasts. Use of detergent Tween 80, precipitation with protamine …
School Systems In Communist China (1949-1963), Ting Chih Lang
School Systems In Communist China (1949-1963), Ting Chih Lang
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Purpose
The purpose of this study was to conduct historical research of the educational systems of the People's Republic of China during the period of 1949-1963. It is hoped that this study will help to clarify the Chinese Communist regime's approach to education and some of the problems encountered in its attempt to mold an educational system suitable for its economic and political need and purpose. More specifically, this study met the following objectives:
- To know the picture of the school ladder.
- To understand the deviation between actual practice and propaganda of Communist China's education.
- To comprehend relationships between Party …
An Investigation Of Cluster Analysis, John C. Klingel
An Investigation Of Cluster Analysis, John C. Klingel
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Three cluster analysis programs were used to group the same 64 individuals, generated so as to represent eight populations of eight individuals each. Each individual had quantitative values for seven attributes. All eight populations shared a common attribute variance-covariance matrix.
The first program, from F. J. Rohlf's MINT package, implemented single linkage. Correlation was used as the basis for similarity. The results were not satisfactory, and the further use of correlation is in question.
The second program, MDISP, bases similarity on Euclidean distance. It was found to give excellent results, in that it clustered individuals into the exact populations from …
A Trail Guide To The Dominguez – Velez De Escalante Expedition 1776, Robert S. Russon
A Trail Guide To The Dominguez – Velez De Escalante Expedition 1776, Robert S. Russon
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In 1939, Herbert E. Bolton stated a need for a synthesizing map of the Dominguez - Velez de Escalante route through the four states of New Mexico, Colorado, Utah, and Arizona. Dr. Bolton urged that a joint effort be undertaken between state and government agencies to establish an "Escalante Way" through the four states to commemorate the historic trek.
The "Trail Guide to the Dominguez - Velez de Escalante Expedition 1776" is an answer to the Challenge given by Herbert Bolton. It is essentially a set of maps, accurately drawn, simplified for lay read ing and enlivened by supporting text. …
Modification Of Ontogenic Expression Due To Relocation Of The Ry+ Gene In Drosophila Melanogaster, Allen A. Badgett Jr.
Modification Of Ontogenic Expression Due To Relocation Of The Ry+ Gene In Drosophila Melanogaster, Allen A. Badgett Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The ry+ gene of Drosophila melanogaster and its associated enzyme, xanthine dehydrogenase, were employed in an analysis of the relationship between regulation and the location of a gene in the genome. Enzyme assays as an indication of gene activity were performed on genotypes containing zero, one and two doses of ry+ genes. Xanthine dehydrogenase activity of rosy genes in normal and relocated positions was determined during development.
The results indicate: 1) the gene ry+ is differentially active during ontogeny; 2) the activity during ontogeny is proportional to the number of ry+ genes present in the genome; …
Low Temperature Germination And Seed Coat Thickness In Tomatoes, John M. Green
Low Temperature Germination And Seed Coat Thickness In Tomatoes, John M. Green
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This investigation has been shown that the thin seed coat of tomato variety P. I. 341988 is not the factor responsible for its ability to germinate at low temperatures. The results support a previous report that low temperature germinating ability is inherited as a simple recessive. Seed coat thickness appears to be conditioned by two or more gene pairs, with dominance lacking. The maternal parent's genes control seed coat thickness, but the embryo's genes control low temperature germinating ability.
Effect Of Various Nitrogen Sources On The Metabolism Of Miserotoxin In Astragalus Miser Dougl. Ex Hook., Robert Parker
Effect Of Various Nitrogen Sources On The Metabolism Of Miserotoxin In Astragalus Miser Dougl. Ex Hook., Robert Parker
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Wasatch milkvetch [Astragalus miser Dougl., var. oblongifolius (Rydb.) Cronq.] was highest in miserotoxin, a poisonous nitro compound, when potassium nitrate was used as the nitrogen source in nutrient cultures. Ammonium nitrate, added to Hoagland solutions to provide four and one-half times normal nitrogen, lowered percent miserotoxin in the plants. Plants grew abnormally in the greenhouse, producing little growth and becoming periodically senescent. High greenhouse temperatures, up to 45 C, were probably responsible for the abnormal growth.
Attempts to inoculate and fix nitrogen in Wasatch milkvetch with Rhizobium bacteria were unsuccessful in the greenhouse.
In growth chamber studies, percent miserotoxin …
A Comparison Of The Ecological Life Histories Of Delphinium Occidentale S. Wats. And Delphinium Barbeyi Huth, Jere Randolph Holman
A Comparison Of The Ecological Life Histories Of Delphinium Occidentale S. Wats. And Delphinium Barbeyi Huth, Jere Randolph Holman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Two species of the holartic genus Delphinium (D. occidentale S. Wats. and D. barbeyi Huth) were studied in the field and laboratory to determine the factors influencing the life stage development and distribution of these plants.
Delphinium occidentale, more widely distributed geographically and altitudinally than D. barbeyi, is found as a member of aspen and sagebrush communities. Sites are mesic in early spring but turn xeric by midsummer. Delphinium barbeyi, more limited in distribution geographically and altitudinally, appears to be limited to subalpine sites.
Adult biological properties are similar for both species. Morphological and taxonomic differences …
The Seasonal Pattern Of Cavitation In Five Species Of Trees, Herond R. Hoyt
The Seasonal Pattern Of Cavitation In Five Species Of Trees, Herond R. Hoyt
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Five species of trees were studied: Acer glabrum (Hook.) Dippel, maple; Betula fontinalis Sarg., birch; Fraxinus pennsylvanica Marsh., ash; Populus tremuloides Michx., aspen; Pseudotsuga menziesii Britton, Douglas Fir. The trees were taken from naturally growing stands, between 20 and 40 years old, and about 7 m tall. The trees were cut down at eight study dates extending over 18 months. A 1.5 m section of stem and a branch from the upper and lower part of the tree were taken to the laboratory. Small pieces were then cut from these large pieces and were subsequently sliced into sections 200 microns …
Vector Preference Among Varieties Of Lycopersicon Peruvianum And L. Esculentum As Related To Curly Top Virus Resistance, Stanford A. Young
Vector Preference Among Varieties Of Lycopersicon Peruvianum And L. Esculentum As Related To Curly Top Virus Resistance, Stanford A. Young
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Tests substantiating vector nonpreference as a factor in the ability of certain tomato varieties to escape curly top virus (CTV) infection were conducted and evaluated. Nonpreference is not an effective mode of resistance to CTV in tomatoes under field conditions since leafhoppers feed on and may infect plants before expressing a preference.
Preference of viruliferous leafhoppers was observed on plants of seven tomato varieties arranged both randomly and homogeneously in caged flats. Through observation of curly top symptom development, relative resistance due to vector nonpreference was calculated for each variety.
Up to 23 per cent of the fairly high resistance …
Studies Of Porphyrin Biosynthesis In Higher Plants, Tsung-Chiang Chen
Studies Of Porphyrin Biosynthesis In Higher Plants, Tsung-Chiang Chen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Uroporphyrinogen decarboxylase which catalyses the formation of coproporphyrinogen from uroporphyrinogen is located in the soluble fraction of tobacco leaves and was purified 72 fold through ammonium sulphate precipitation and calcium phosphate gel adsorption.
Kinetic studies indicated that the apparent Michaelis constant was 1 x 10-6 for uroporphyrinogen III (pH 6.5; 37° C). Uroporphyrinogen III served as a much better substrate than uroporphyrinogen I under the standard conditions of this study.
Enzyme activity was inhibited by thiol reagents and heavy divalent cations.
Both chloride and fluoride salts inhibited the formation of coproporphyrinogen from uroporphyrinogen.
Enzyme activity was inhibited by several …
Operations Research Model For Competitive Bidding, Harold Kerzner
Operations Research Model For Competitive Bidding, Harold Kerzner
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this paper is to demonstrate a model for competitive bidding. The model is based upon a thorough knowledge of the competitors. The model is designed to optimize a solution, given the desired profit and the minimum probability of success. Various cases are considered showing how the quantitative and qualitative nature of the competitors' bidding history may influence the final optimized solution.
In order to optimize a solution, a reduction in total manhours is usually needed. The reduction in manhours increases the risk of a cost overrun upon job completion. The magnitude of the risk, as well as …
U.S.U And The New Toxicology, Joseph C. Street
U.S.U And The New Toxicology, Joseph C. Street
Faculty Honor Lectures
Toxicology, a branch of science once concerned only with poisons for their medical effects and legal con sequences, has undergone in recent years a metamorphosis on a major scale. The general field of toxicology is defined as the qualitative and quantitative study of the injurious effects of chemical agents, as detected by alterations of structure and function in living systems (Murphy and Hayes, 1972). In common with most other disciplines it has benefited from a growing sophistication in research methods and has particularly flourished in the wake of major advances in physiology, biochemistry and the other basic sciences that serve …
The Supreme Organ Of The Mind's Self-Ordering Growth, T. Y. Booth
The Supreme Organ Of The Mind's Self-Ordering Growth, T. Y. Booth
Faculty Honor Lectures
As is true of other organs, when language is functioning well, we pay little or no attention to it or its complexities. Part of the difficulty, in fact, of doing justice to the problems of expression and interpretation that Richards asks us to deal with is that routine language experience occurs so effortlessly, so unconcernedly, so second-natured naturally, that when we do run into difficulties we do not always recognize them as difficulties of our developing language. Or, what can be even worse, we think of the language difficulties as if they were separable, as if the thought would be …