Digital Commons Network^™

Biology Of Nematodes In Desert Ecosystems, D. W. Freckman, S. A. Sher, R. Mankau

Memorandum

No abstract provided.

Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, Peter L. Comanor, Don C. Prusso

Memorandum

No abstract provided.

Curlew Valley Validation Site, D. F. Balph, R. S. Shinn, R. D. Anderson, C. Gist

Memorandum

No abstract provided.

Combined Airglow And Incoherent Scatter Observations As A Technique For Studying Neutral Atmospheric Variations, L L. Cogger, Vincent B. Wickwar, Herbert C. Carlson

All Physics Faculty Publications

Night airglow 6300 Å intensities and electron density altitude profiles observed at Arecibo have been combined with dissociative recombination theory to obtain information about the nighttime variation of F-region N₂ and O₂ densities. The application of this technique is illustrated using data from two nights in March 1971. The gross nighttime variation shows reasonable similarity to the Jacchia [1970] model, and also follows the time variation of the measured exospheric temperature. However, on both nights there is evidence of a postmidnight enhancement of the O₂/N₂ density ratio associated with a rapid decrease in the …

Weight-Volume Relationships Of Aspen And Winter-Cut Black Spruce Pulpwood In Northern Minnesota, D.C. Lothner, R.M. Marden, E. Kallio

Aspen Bibliography

No abstract provided.

Altitude Profiles Of Infrared Radiance Of O3 (9.6 Μm) And Co2 (15 Μm), A. T. Stair Jr., James C. Ulwick, Doran J. Baker, Clair L. Wyatt, Kay D. Baker

Space Dynamics Laboratory Publications

The infrared spectrum of the upper atmospheric emissions between 7 and 23 vm has been measured with two spectrometers carried to high altitude by sounding rockets. Radiance profiles of 03(9.6 vm) and C02(15 vm) radiations have been obtained to nearly 100 and 750 kin, respectively.

Measurement Of Soil Water Potential By Adsorption Conductivity, V. Philip Rasmussen Jr.

Undergraduate Honors Capstone Projects

Current methods of measuring soil water potential are reviewed, and the limitations of each are noted. The need for a transducer that will measure soil water potential over a wide moisture range for long periods of time is delineated. The concept of utilizing an adsorptive surface that resembles the soil in its water holding capacity as a transducer is discussed. Various designs and materials are tested for such a transducer.

All designs tested did not fulfill the requirements needed for a truly useful transducer. However, experimental results show that modification of the adsorptive surface should allow construction of a unit …

Simulation Of Steady And Unsteady Flows In Channels And Rivers, Roland W. Jeppson

Reports

The unsteady, one-dimensional Saint-Venant equations are solved by an implicit finite difference scheme to handle general channel and river flows. The initial conditions for the unsteady flow are provided by solving the steady varied flow equation for the specified boundary conditions. The solution for the unsteady flow allows any of eight separate boundary conditions to be specified which are composed of combinations of specifying the depth or discharge as functions of time at either the upstream of downstream ends, with the stage-discharge relation or constant depth and flow rate specified at the other end. Typical solutions showing the spatial and …

Steady Flow Analysis Of Pipe Networks: An Instructional Manual, Roland W. Jeppson

Reports

No abstract provided.

Component Description Of Sediment-Water Microcosms, James Hill Iv

Reports

The development and application of complementary variables (potential and flux) for modeling environmental systems are illustrated for the hydraulic and dissolved oxygen subsystems of laboratory microcosms. These sediment-water, semi-continuous flow microcosms were used to determine nutrient interchange and mercury interactions under lighted (aerobic) and dark (anaerobic) conditions. The approach of using complementary variables to describe such systems forces a more complete conceptual understanding of the system and better attention to those parameters (many of which are unknown) requiring measurement. Complementary variables are incorporated into basic linear component equations which describe basic processes of energy transfer and transformation. The components are …

Precipitation Augmentation Potential By Cloud Seeding In The State Of Utah, Geoffrey E. Hill

Reports

No abstract provided.

Hydrologic Model Studies Of The Mt. Olympus Cove Area Of Salt Lake County, J. Paul Riley, Vernon J. Rogers, George B. Shih

Reports

Urban development on any natural drainage basin causes marked changes in the runoff characteristics of the basin. Urbanization alters natural drainage channels and reduces average infiltration rates. Thus, flood conditions are enhanced both within the urbanizing area itself and at downstream locations, where existing channels might not be able to cope with the increased rates of water flow. The Olympus Cove area in Salt Lake County is undergoing rapid urban development, and potential flood hazards within the area and at downstream locations are thereby increasing. Recognizing this situation, officials of the Sale Lake County took the initiative in organizing an …

Intermittent Sand Filtration To Upgrade Existing Wastewater Treatment Facilities, Gary R. Marshall, E. Joe Middlebrooks

Reports

No abstract provided.

Development Problems Facing Logan's Retail Community, Vaughn Cook

Undergraduate Honors Capstone Projects

This paper concerns itself mainly with the problems presently facing Logan's CBD (Central Business District). With the possibility of competition from a mall on 14th north, increased population with all its ramifications and continuing natural decay, the problems of downtown Logan today will not get any easier. This paper offers a look at those problems and considers a few alternative solutions. In no way is it intended to cover the entire range of solutions available, nor does it offer in depth answers to these problems. Rather, it is an overview of possible avenues where effort may be directed.

Kcpx News Survey, Marcia Bracken

Undergraduate Honors Capstone Projects

The area of public opinion and survey research is one of my chief interests in my chosen major of political science. The purpose of this study is to demonstrate my accumulated knowledge and experience in the field of survey research. After studying and working under Dr. Dan E. Jones, an Associate Professor of Political Science and Director of the Bureau of Government and Opinion Research, for approximately four years, I have been involved in the many phases of survey research on numerous projects including public opinion surveys, political polls, elite interviewing, and election projections.

With the approval of Dr. Sanders, …

The Thermolysis Of Bornyl And Iso-Bornyl Acetates, Allen Reed Jensen

Undergraduate Honors Capstone Projects

Recent investigations in the area of acetate gas phase thermolysis indicate a mechanism which involves a similar transition state despite the acetate used. The reaction preferentially goes through a cis-elimination with the β-hydrogen atoms, proceeding through a six-membered ring transition state.

The purpose of this study is to examine the effect of a strained bicyclic ring system upon the mechanism of acetate thermolysis. Throuqh kinetic studies and product identification of the pyrolyzed products of bornyl and iso-bornyl acetate, an insight into the preferred mechanism can be obtained. A previous study (cited later) indicated that the accepted six-membered cis …

Modeling The Total Hydrologic-Sociologic Flow System Of Urban Areas - Phase Ii, Wade H. Andrews, J. Paul Riley, George B. Shih, Malcolm B. Masteller

Reports

Introduction and Overview: This is an interim report on Phase II of the three phase study. The objectives covered in this phase were: 1. To gather social and hydrologic data needed to calibrate and test the model. 2. The expand the physical model to include the rural part of the watersheds. 3. To test and improve techniques of the logical linking of the hydrologic and sociologic systems. 4. To begin adapting the model to the computer. During the second phase for the hydrologic component of the model major emphasis was placed on the expansion of the hydrologic area and the …

Effect Of Temperature On Algal Removal By Alum Coagulation, Muhammad Anis H. Al-Layla, E. Joe Middlebrooks, Donald B. Porcella

Reports

Questions about the effect of temperature on algal cell coagulation and the relationships between algae removal and temperature, alum dosage, paddle speed, flocculation time, and settling time are answered. The investigations consisted of two series of tests: Studies on algae cultured under laboratory control, and algae in wastewater stabilization ponds. The jar-test technique was used for the coagulation of algal suspensions by alum. Coagulation of algae is caused mainly by the insoluble flocs of aluminum hydroxide. Other aluminum species also have coagulative properties but are far less effective. The destabilization of algal colloids results from enmeshment within the hydroxide precipitates, …

Upgrading Wastewater Stabilization Ponds To Meet New Discharge Standards, Donna H. Falkdenborg, Ronald F. Lewis, Donald J. Ehreth

Reports

No abstract provided.

Determining Sample Size For A Control Chart, Shu-Yang Catherine Jean

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The essential tool in statistical quality control is the control chart. In spite of the apparent simplicity of the control chart, most engineers, production men, and inspectors find that its use calls for an entirely new point of view. The power of this technique lies in its ability to separate out assignable causes of quality variation. This makes possible the diagnosis and correction of many production troubles and often brings substantial improvements in product quality and reduction of spoilage and rework. The control chart tells when to leave a process alone and thus prevents unnecessarily frequent adjustments that tend to …

Functional Analysis Techniques In Numerical Analysis, Kenneth D. Schoenfeld

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

In this paper we will consider the problem of selecting the best, or optimal, numerical method of solution to a given mathematical problem. The admissible numerical methods will be a clearly defined set for each problem. Obviously, in order to find the best method in this set, we must have a clear mathematical formulation of just what "best" means; this will be the intent of Theorem 0.1. Intuitively, the best method will be understood to be the one which minimizes the maximum possible error where this error will be measured in terms of the norm of a given Hilbert space. …

Capitol Reef Wilderness Study, United States Deparment Of The Interior, National Park Service

Elusive Documents

Capitol Reef National Park is located in south-central Utah within

portions of Wayne, Garfield, Sevier, and Emery Counties. Situated on

the western edge of the Colorado Plateau, this scenic land is adjacent to

Dixie and Fishlake National Forests and Goblin Valley State Park.

Other Park Service areas nearby include Zion and Bryce Canyon

National Parks, and Cedar Breaks National Monument to the west;

Canyonlands National Park and Arches National Park to the east; and

Glen Canyon National Recreation Area to the south and east.

Mathematical Simulation Of Temperatures In Deep Impoundments: Verification Tests Of The Water Resources Engineers, Inc. Model - Horsetooth And Flaming Gorge Reservoirs, Engineering And Research Center, Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

Successful use of predictive mathematical models requires verification of the accuracy of the models by applying them to existing situations where the prediction can be compared with reality. A Corps of Engineers' modification of a deep reservoir thermal stratification model developed by Water Resources Engineers, Inc., was applied to two existing Bureau of Reclamation reservoirs for verification. Diffusion coefficients used for the Corps' Detroit Reservoir were found to apply to Horsetooth Reservoir in Colorado, for which very good computer input data were available. The Detroit diffusion coefficients gave a reasonable simulation of Flaming Gorge Reservoir in Wyoming and Utah, which …

Path-Coefficient Analysis Of Correlation Between Honey Bee Activity And Seed Yield In (Allium Cepa L.), N. S. Shasha'a, William P. Nye, W. F. Campbell

All PIRU Publications

A path-coefficient analysis was used to furnish information on the inter-relationships of pollinating insect activity and components of seed yield in inbreds of Allium cepa L. The inbreds differed very significantly in their attentiveness to pollinating insects. Only one inbred exhibited a significant correlation (P <0.05 positive) between numbers of honey bees and seed yields. Separating the correlation coefficients into components of direct and indirect effects indicated that pollination attractiveness was not the limiting factor in seed set for inbreds in the experiment. Moreover, most of the variation in seed yield could be attributed to indirect effects on the components of yield, umbels per plant, flowers per umbel, percent per fertilized flower, and seeds per fertilized flower.

A Revision Of The Genus Iteaphila Zetterstedt Of North America (Diptera: Empididae), Douglas R. Anderson

Biology

A Complete revision of the genus Iteaphila was made. Described as new species were Iteaphila bulbosa from Alberta and British Columbia, Iteaphila longirostris from Quebec, and Iteaphila pumila from Alaska, Northwest Territories, and Yukon Terrotory. Iteaphila conjuncta was placed in synonymy with Iteaphila nitidula. This left fourteen species of the genus Iteaphila in North America. Keys to the species, descriptions, seasonal occurrences, flower records, illustrations of the male terminalia, and distribution maps were provided

A Reduced Temperature-Dependent Black Spotted Eye Phenotype In Drosophila Melanogaster And Its Association With Three Different Genes, Stanley R. Irvine Jr.

Biology

The purpose of this study was to investigate black spottedness, in the eyes of the op-e strain of Drosophila melanogaster. This process has some characteristics of tumor formation and is a hereditarily transmissable trait. It was found that black spot formation resulted from a reduced temperature event occurring just prior to pigment (ommochrome) deposition in the eye. The temperature influenced event required the presence of a genetic factor behaving as a semi-dominant ("sp-e") gene identified with the third chromosome. Black spottedness then developed in a manner characteristic of melanization. Present in the spotted region were grossly abnormal …

Heart Rate As An Indicator Of Metabolism In Free-Living Uinta Ground Squirrels (Spermophilus Armatus), Steve F. Johnson

Biology

Metabolic rates and heart rates were linearly correlated in nonhibernating, Uinta ground squirrels (Spermophilus arrnatus) at air temperatures in and below the thermoneutral zone. This relationship measured in the laboratory was used to estimate the metabolism of 4 squirrels in the field for 7 days from telemetered heart rate and the metabolism of 2 squirrels in the laboratory for 8 days. The accuracy of heart rate as an indicator of the metabolism of Uinta ground squirrels is evaluated. Measurements of D₂0 and H₂¹⁸0 turnover rates made simultaneously with heart rate did not yield …

Selection At The Molecular Level: Competition Between Members Of The Lambdoid Family Of Bacteriophages, Kandy D. Baumgardner

Biology

Competition between lambda and 434 hy mi and lambda and phi80 was investigated, making use of long-term transfer experiments to follow evolutionary trends of the phage populations. The competitive superiority of lambda at 37 C is shown by the elimination of 434 hy mi and phi80 from mixed populations. A reversal in the outcome of competition between lambda and phi80 was observed when the phages were grown at low temperature. The temporal course and final outcome of competition appear to be genetically determined responses of the phages to their specific environment. No relation between phage yield per cell and advantage …

Carbaryl Penetration And Metabolism In The Alfalfa Leafcutting Bee, Megachile Pacifica (Panzer), Guirguis N. Guirguis

Biology

Carbaryl penetration into and metabolism by adult alfalfa leafcutting bees, Megachile pacifica (Panzer), was studied in relation to sex, age, exposure to piperonyl butoxide, and after feeding with chlorcyclizine, phenobarbital, or aminopyrine. Specifically the study included 1- and 4-day-old male bees and 4-day-old female bees representing LD₅₀ values of about 240, 51, and 262 µg/gm and carbaryl-piperonyl butoxide synergist ratio of 12, 53, and 15, respectively. Penetration rates/hour and percent penetrated were calculated for the first 8 hours after application. More carbaryl penetrated more rapidly into the most sensitive insects, but the differences were not statistically significant. Piperonyl butoxide, …

Individualized Instruction And The Utah Secondary Business Instructor, Don R. Hender

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Lloyd K. Bishop has stated that individualized instruction has been one of the most predominant themes in education for over a decade. Individualized instruction places as its central focus the welfare of the individual. All other elements are molded to facilitate the development of the individual.

One of the early outstanding presentations of this theme was that of Jean Jacques Rousseau in his immortal 'Emile'. The significance of the individual was one of the pervasive themes during the establishment of the United States of America. The welfare of the individual is one of the most prominent themes of government and …