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Utah Science Vol. 33 No. 1, March 1972

Utah Science

Ecology, environment, and natural resource scientists-an editorial, Thadis W. Box 3

Wildlife Notes 4, 34

There is a difference between saying and doing, H. K. Hancock 5

New dean of agriculture appointed 6

Answering questions about tourism-a growing economic development tool, John D. Hunt, Perry J. Brown and John H. Schomaker 7

Range productivity and economics, John P. Workman, John C. Malechek and Arthur D. Smith 10

Behavioral control of vertebrate pests, D. F. Balph and C. V. Grant 12

The plant ecology of Utah's desert rangelands, Martyn M. Caldwell and Neil E. West 14

Associate dean of agriculture appointed …

Annuals, Not Listed

Modeling

No abstract provided.

Abstract Of 1971 Progress Report, U.S. International Biological Program

Progress reports

No abstract provided.

Assimilation, Metabolism And Growth Of Utah Chub, Gila Artaria, F. C. Cheng, R. L. Wallace, T. C. Bjornn, C. Macphee

Memorandum

No abstract provided.

Forest Fuel Accumulation -- A Growing Problem, Marvin Dodge

The Bark Beetles, Fuels, and Fire Bibliography

Discusses the problem caused by accumulation of forest fuels in the wild-land forests of the western USA under the policy of total fire protection pursued there for many years, and emphasizes the need to find economical and practical ways of reducing fuel hazards in these forests, especially by means of prescribed burning under conditions in which low-intensity fires can be achieved.

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

Memorandum

No abstract provided.

Evaluation Of Techniques For Estimating Population Sizes Of Desert Rodents, C. D. Jorgensen, H. D. Smith, D. T. Scott

Memorandum

No abstract provided.

Food Habits Of Northern Rodents And Jackrabbits, W. E. Saul

Memorandum

No abstract provided.

Colony Characters Of Termites As Related To Population Density And Habitat, W. L. Nutting, M. I. Haverty, J. P. Lafage, R. V. Carr

Memorandum

No abstract provided.

Assimilation, Metabolism And Growth Of Utah Chub, Gila Atraria, F.C. Cheng, R.L. Wallace, T.C. Bjornn, C. Macphee

Progress reports

No abstract provided.

Diffusion-Controlled Reaction Kinetics, David Peak, J W. Corbett

All Physics Faculty Publications

The theory of diffusion-controlled correlated reaction kinetics is developed for the radiation boundary condition (RBC) at the reaction surface. Limited only by the assumptions of purely radial spatial dependence, of a spherical reaction surface, and of continuum diffusion, these results comprise a complete solution for these kinetics. The limiting solutions are obtained for the case of the Smoluchowski boundary condition (SBC) at the reaction surface; numerical solutions are presented, as are the analytic forms of certain limiting cases. The initial recovery for the RBC is linear in time, whereas for the SBC it is well known to be proportional to …

Experimental Study Of Water Hammer In Buried Pvc And Permastran Pipes, Roland W. Jeppson, Gordon H. Flammer, Gary Z. Watters

Reports

No abstract provided.

Studies To Develop And Investigate An Inverse Formulation For Numerically Solving Three-Dimensional Free Surface Potential Fluid Flows, Roland W. Jeppson

Reports

An inverse formulation is developed for solving three-dimensional potential fluid flows which considers the magnitudes of the cartesian coordinates x, y, and z as the dependent variables in the space defined by the potential function and two mutually orthogonal stream surface functions whose intersection defines the physical space streamlines. This formulation reverses the usual role of the variables. In this inverse space irregular boundaries, with unknown position in the physical space, such as free surfaces become plane boundaries, and the space of most potential flow problems is a parallelepiped. The basin partial differential equations resulting from this formulation are nonlinear …

The Hydraulics Of Waste Stabilization Ponds, Gary Z. Watters

Reports

The treatment efficiency of waste stabilization ponds depends primarily on the biological factors of type of waste and organic loading. However, the biological activity in a pond is greatly influenced by the environmental conditions of temperature, wind, sunlight, and the hydraulic flow patterns. In the past little attention has been given to the hydraulic characteristics of waste stabilization ponds such as the gross flow patterns within stabilization ponds as affected by the shape of the pond or lagoon, the presence of dead spaces, and positioning of inlets and outlets and the degree of density stratification. These hydraulic flow characteristics will …

Water Management Research In Arid And Sub-Humid Lands Of Less Developed Countries: Fifth Annual Progress Report, Utah State University

Reports

No abstract provided.

Relationships Of Infiltration Characteristics To Parameters Describing The Hydraulic Properties Of Soils, Roland W. Jeppson

Reports

No abstract provided.

Limitations Of Some Finite Difference Methods In Solving The Strongly Nonlinear Equation Of Unsaturated Flow In Soils, Roland W. Jeppson

Reports

No abstract provided.

The Electoral College In The American Nation, Boyd J. Jentzsch

Undergraduate Honors Capstone Projects

Democracy in America is often guided by the visible forces of the moment. Dangers are too often seen in the context of political interest--when fire is seen, the hoses of democratic action come wheeling out. But there is no excitement in smoke alone. The near constitutional crisis of the 1968 Presidential elections, (when the strong third party candidacy of George Wallace threatened to throw the election into the House of Representatives), caused a lot of smoke and a spark of flame. The alarm was sounded and the volunteer firemen from the halls of Congress and Capitol Hill responded. The standers-by, …

Conflicts In Water Managment, A. Alvin Bishop

Faculty Honor Lectures

Today we hear a lot about the "quality of life" and the "quality of the environment," two terms that everyone understands, but as yet no one has defined. Like others, I will not attempt a definition but introduce my subject by saying that water is intimately tied up with both our life and our environment, and its management has a profound effect for good or bad, depending upon the point of view. Today also, clean water and anti-pollution are popular crusades. Someone or something has to be responsible and engineering and science are convenient scapegoats. Considerable emotionalism is involved and …

Utah Science Vol. 32 No. 2, June 1971

Utah Science

Our Jekyl and Hyde Chemical World-some considerations, editorial 35

Pesticides and ecology, John M. Neuhold 39

The university's role in pollution control, David M. Berry 41

A brief history of pesticide use, Reed S. Roberts 42

Pesticides in public health, Lyman J. Olsen, M.D . 45

Chlorinated hydrocarbons cause thin egg shells but so may other pollutants, R. K. Tucker 47

Some benefits of pesticides to public health, Jay E. Graham 50

The Utah community pesticide study, Stephen L. Warnick 53

What can USU do about pesticides?, Louis A. Jensen 56

Mechanisms of pesticide toxicity, R. P. Sharma 57

Pesticides …

Student Life, May 28, 1971, Vol. 68, No. 90, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, May 24, 1971, Vol. 68, No. 88, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, May 17, 1971, Vol. 68, No. 83, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, May 12, 1971, Vol. 68, No. 82, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, May 10, 1971, Vol. 68, No. 82, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, May 7, 1971, Vol. 68, No. 81, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

A Comparative Study Of The Mutationally Unstable Mutants Forked-3n And White-Ivory Of Drosophila Melanogaster, Ronny C. Woodruf

Biology

The unstable Drosophila melanogaster mutants f³ⁿ (1-56.7 and wⁱ (1-1.5) have been observed to revert frequently to wild type with similar parameters of reversion. Therefore, it was the objective of this investigation to critically compare the properties of the f³ⁿ reversion event to previously reported data on wⁱ reversion and to determine if the two phenomena are truly similar. After confirming the previously reported spontaneous and X-ray-induced f³ⁿ reversion frequencies, it was determined that f³ⁿ reversion events in homozygous females are independent of recombination of outside markers. This is consistent with the properties of …

Measurement Of Soil Moisture By Attenuation Of A Vertically Polarized Radio Wave, Arlo D. Mickelsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis is to determine feasibility and to investigate some of the problems encountered in making soil moisture measurements using radio wave propagation. The procedure consists of propagating a vertically polarized wave over the earth and measuring the field strength attenuation. A brief summary of present methods of measuring soil moisture is given.

Certain aspects of radio wave propagation theory are discussed, covering such topics as the surface wave, the space wave, the skin depth, and the effect of the dielectric constant on radio wave propagation. Based on this theory, measurement parameters such as frequency, antenna separation, …

Statistical Analysis For Tolerances Of Noxious Weed Seeds, Yadolah Dodge

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An analysis of the previous method for testing tolerances of noxious weed seeds was performed. Problems of the current techniques were discussed, and the solution to these problems was given.

A new technique of testing through the sequential test ratio was developed, and results examined.

The sequential test was found to be useful enough to include the use of it in determining tolerances for noxious weed seeds.

This study did show that the use of sequential tests does have excellent potential and flexibility as a statistical tool for the tolerances of noxious weed seeds.

Investigation Of Urolithiasis Occurring In Hatchery-Reared Trout In Utah, Ernest H. Dean Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The urolithiasis condition investigated occurred at a "hard water" hatchery in Utah after the trout were changed from a meat diet to a commercial pelleted fish feed as a sole sustaining diet in 1961. Numerous diet modifications proved unsuccessful in preventing urolithiasis at the hatchery. It was eventually determined that different commercial diets resulted in varied percentages of trout developing urolithiasis. The urolithic deposits found in the kidney tubules were amorphous and composed of calcium phosphate (apatite) and an organic matrix. Bacterial contamination of the kidneys was not an important factor in the formation of urolithiasis. Rainbow trout containing urolithic …