Engineering Commons^™

Energy In Agriculture: Fan Performance On Grain Drying Bins, Otto J. Loewer, Thomas C. Bridges, G. M. White, Robert L. Fehr, Larry W. Turner

Agricultural Engineering Energy Series

One of the keys to successful in·bin grain drying and aeration is the matching of a drying or aeration fan to the drying or storage bin. A properly designed system will be more efficient in terms of both drying and energy utilization. The quantity of air that may be delivered through the grain depends upon grain type, bin size, fan type, fan horsepower, depth of grain, percent of foreign material and the extent to which the grain is packed.

Pavement Evaluation Using Road Rater Deflections, Gary W. Sharpe, Herbert F. Southgate, Robert C. Deen

Kentucky Transportation Center Research Report

Dynamic test deflections have been duplicated by elastic theory using the Chevron N-layered computer program. Dynamic surface deflections obtained using the Road Rater have been used in conjunction with elastic theory to analyze pavement behavior. A procedure has been developed to use field measured Road Rater deflections to estimate the elastic moduli of the foundation material and to determine the equivalent thicknesses of new material which approximate the behavior of the structure. The estimated moduli and (or) equivalent thicknesses may be used as inputs to design overlay thicknesses. An analysis of the deflections of the first three sensors of the …

Determination Of Rutting In Asphaltic Concrete Pavements: Field Instrumentation And Laboratory Characterizations, David L. Allen

Kentucky Transportation Center Research Report

This report describes a number of gages developed to measure the location and magnitude of ruts. These were installed in a newly constructed asphaltic concrete pavement. They measure lateral deflections and transient and permanent vertical deflections. Some preliminary vertical deflections are reported. An investigation of materials is also reported. The asphalt concrete base, dense-graded aggregate base, and subgrade material were characterized by (1) shear strength (triaxial tests), (2) rheologic behavior (creep tests), (3) permanent deformation characteristics (repeated-load and creep tests), (4) Young's modulus (resonant column tests), and (5) resilient properties (repeated-load tests). Empirical functions were formulated to describe the permanent …

Cpacs Happenings (August-September 1978 Newsletter), College Of Public Affairs And Community Service, University Of Nebraska At Omaha

CPACS Newsletters

The College of Public Affairs and Community Service (CPACS) newsletter that reported on the news, collaborations, events, and general happenings of the UNO College of Public Affairs and Community Service. This newsletter has had many names and variations over the years including SPACS Newsletter (1973); Newsletter of the College of Public Affairs and Community Service (1973-1974): Happenings (1974-1980s); and the current e-newsletter titled the CPACS Collective (2021-)

Micro-Relief Surface Depression Storage: Changes During Rainfall Events And Their Application To Rainfall-Runoff Models, J. Kent Mitchell, Benjamin A. Jones Jr.

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Micro-relief surface depression storage is one of the dynamic components of the rainfall-runoff process. The quantification of the effect of rainfall intensity and duration on the micro-relief was the subject of this study. Micro-relief measurements were made on 88 soil bin samples before and after the application of simulated rainfall events. The surface depression changes are described with empirical equations, using basic rainfall, surface hydrology, and soil parameters and their cross products as independent variables. A rainfall-runoff model demonstrates the value of a dynamic description of the surface depression storage function.

An Analytical Comparison And Contrast Of The Automobile Rotary Combustion Engine And The Reciprocating Engine, Eric K. Earle

Graduate Research Papers

The ReCE, although possessing many good characteristics as a motive source of power, is still somewhat far from achieving the desired efficiency in man's quest for better economical and practical means of transportation, due to the lack of higher speeds and its inability to burn all of the fuel admitted as a result of its large number of moving parts, their weight, size and reciprocating motion.

The design and development of the RCE has overcome many of the above problems inherent in the ReCE, and, therefore, has the potential of replacing the ReCE as the major source of automotive power …

Handbook Of Remote Sensing Imagery Of Connecticut, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor

Storrs Agricultural Experiment Station

No abstract provided.

Acuta Enews July 1978, Vol. 7, No.7

ACUTA Newsletters

In This Issue

MOUTH OF THE SOUTH

PARTY LINE

POTPOURRI

BITS & PIECES

VIRGINIA VIEW

ACUTA WELCOME THE FOLLOWING NEW MEMBERS

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Transversely Reinforced Beam Webs, Wei-Wen Yu, Nguyen Phung

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on transversely reinforced cold-formed steel beam webs. The results obtained from the study of beam webs subjected to …

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Longitudinally Reinforced Beam Webs, Wei-Wen Yu, Nguyen Phung

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on longitudinally reinforced cold-formed steel beam webs. The results obtained from the study of beam webs subjected to …

Characteristics Of Bicycle-Related, Motor Vehicle Accidents In Kentucky, Kenneth R. Agent, Charles V. Zegeer

Kentucky Transportation Center Research Report

The purpose of this study was to determine the characteristics associated with bicycle-related, motor vehicle accidents. Bicycle-related, motor vehicle accidents in Kentucky were analyzed.

A sample of injury-producing bicycle accidents was also analyzed. It was found that cyclists 10 to 14 years of age were involved in the largest number of motor vehicle related accidents. Males were involved in four times as many accidents as females. Most accidents occurred in urban areas, mostly on residential streets. The majority of accidents resulted from errors by the cyclists. The most common type was the right-angle accident, but the leading types varied with …

New Directions In Western Water Law Proceedings Of The Sixth Annual Conference Of The Utah Section Of The American Water Resources Assoc., Utah Water Research Laboratory

Reports

No abstract provided.

Seasonal Variations In The Skid Resistance Of Pavements In Kentucky, James L. Burchett

Kentucky Transportation Center Research Report

Frequent measurements of skid resistance were made on 20 pavements in common use in Kentucky. Tests were conducted from November 1969 through 1973. Principal analysis involved relating changes in skid resistance to day of the year and relating skid resistance to temperature at the time of test, to average antecedent temperatures, and to average rainfall.

Seasonal variations exhibited an annual, sinusoidal cycle. The changes in sand-asphalt and bituminous concrete under higher volumes of traffic were about 12 skid numbers. The changes in portland cement concrete and bituminous concrete under lower volumes of traffic were about 5 skid numbers. The lowest …

Wells And Ponds: Water Quality And Supply, Elbert C. Dickey, W.D. Lembke

Department of Agricultural and Biological Systems Engineering: Faculty Publications

FARM WELLS IN WASHINGTON COUNTY ...................... 1

Study Area Description ................................. 4

Field and laboratory Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . 9

Soil and Groundwater Measurements ...................... 10

Well Water Measurements ............................... 15

Summary ............................................ 17

PONDS IN WASHINGTON AND POPE COUNTIES ................. 17

Ponds in Washington County ............................ 17

Ponds and a Lake in Pope County ......................... 25

Summary ............................................ 30

Bibliography ............................................. 31

Appendix ............................................... 34

This bulletin is one of six publications growing out of a four-and …

A Review Of Manpower Training And Future Directions In Air Pollution Control At Universities, August T. Rossano, Harold M. Cota

Civil and Environmental Engineering

No abstract provided.

Acuta Enews June 1978, Vol. 7, No. 6

ACUTA Newsletters

In This Issue

EXECUTIVE VICE PRESIDENT'S MESSAGE

PARTY LINE

BITS & PIECES

NOMINATING COMMITTEE REPORT

MORE BITS & PIECES

DATA BITS

MOUTH OF THE SOUTH

VIRGINIA VIEW

POTPOURRI

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected Primarily To Shear Stress, Wei-Wen Yu, Roger A. Laboube

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on the unreinforced beam webs subjected primarily to shear stress. The results obtained from the study of beam …

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected To Web Crippling And A Combination Of Web Crippling And Bending, Wei-Wen Yu, Nipon Hetrakul

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on web crippling and combined web crippling and bending for cold-formed steel beams having unreinforced webs. The results …

Webs For Cold-Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected To Bending Stress, Wei-Wen Yu, Roger A. Laboube

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on unreinforced beam webs subjected to bending stress. The results for the study of beam webs subjected to …

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected To A Combination Of Bending And Shear, Roger A. Laboube, Wei-Wen Yu

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on the unreinforced beam webs subjected to a combination of bending and shear. The results obtained from the …

Water Conservation Information Dissemination During The 1997 Drought Emergency, L. Douglas James, Wade H. Andrews

Reports

As drought conditions in 1976 and 1977 became increasingly severe throughout the west and affected many other parts of the country, many states began special drought information dissemination efforts. This study was organized to provide for the exchange of information among the respective states a forum that could reduce duplication among independent efforts. The project collected information. on: A) Water-user conservation practices, 1) domestic use, a) inside use, b) outside use, 2) industrial, 3) commercial, and 4) irrigation; B) Water-supplier management practices, 1) water conservation Inducements, 2) emergency supply augmentation, a) groundwater mining, b) water harvesting, c) water reuse, 8) …

Numerical Control Machining, Dennis L. Maclennan

Graduate Research Papers

Accurate and timely data depicting major aspects of manufacturing are essential to allow management to exercise effective controls for investments relating to automated equipment. One specific area of automated equipment can be termed "numerical control" (N/C) . "N/C is a technique for the control of production tools by information prerecorded in symbolic form (Devries, 1971, p. 1)." l This study is concerned with gathering material on the functional use and operation of N/C equipment. Specifically, the following areas of study were:

(1) to gather historical information on N/C equipment development;

(2) to investigate who are the major manufacturers of N/C …

Sizing Of Liquid Manure Tank Wagons And The Economic Evaluation Of Liquid Manure Injection, J.N. Scarborough, Elbert C. Dickey, D. H. Vanderholm

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Liquid manure tank wagons were evaluated on a cost basis to determine the optimum size for a given livestock operation. Also the economics of adding a liquid injector to the tank wagon was studied for profitability.

INTRODUCTION

The proper selection of a liquid manure tank wagon is a problem faced by many progressive livestock producers with liquid manure systems. Selection of a manure tank wagon is usually based on the farmer's or dealer's opinion of what size is right rather than on a logical analysis including an economic analysis of the costs involved. This paper provides guidelines for selecting the …

The Use Of Windmills As A Potential Energy Alternative, James A. Long

Graduate Research Papers

The use of wind as an energy source has been used for many centuries to do work for man. Wind energy has long been recognized as a potentially abundant source of power. In this area of the United States windmills once dotted the landscape providing a means of pumping water and for mechanical power. It also was used for generation of electrical power on farms before the advent of the rural electrification program. In recent years, however, the reliance upon fossil fuels to supply man with energy has virtually eliminated his reliance upon wind as an energy source. With the …

Numerical Control Milling, Roger Schroeder

Graduate Research Papers

This research paper centers on two general problems:

1) Development of machine angles on the point-to-point NC mill by utilizing different combinations of feed rates on the X and Y axes.

2) Developing a learning activity package which includes a product to be produced by students on the numerical control milling machine that is safe, fast and inexpensive. The experiences gained in this activity will give the students a good working knowledge of numerical control principles.

Test 1276: White Field Boss 2-155 Dsl 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1275: White Field Boss 2-135 Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Acuta Enews May 1978, Vol. 7, No.5

ACUTA Newsletters

In This Issue

PRESIDENT'S MESSAGE

PARTY LINE

BITS & PIECE

S SNOWBOARD CONFERENCE '78

MOUTH OF THE SOUTH

POTPOURRI

VIRGINIA VIEW

GETTING THERE FROM HERE--- AT A DISCOUNT

Rayleigh-Debye Scattering With Focused Laser Beams, Lee W. Casperson, Cavour W. Yeh

Electrical and Computer Engineering Faculty Publications and Presentations

A focused beam technique has been developed for diagnosing the characteristics of individual particles within a polydisperse ensemble. In the Rayleigh-Debye approximation the scattered fields are related to the orientation and properties of a scatterer by means of explicit analytic formulas. The results simplify when the particle size is small compared to the minimum beam diameter.

Structural Design Of Built-Up Plywood Box Beams, Michael J. Sneddon

Graduate Research Papers

The purpose of this study, given the background mentioned above, is to investigate the structural design of built-up plywood box beams and to develop an instructional unit based on their design.

The scope shall be limited to statically determinate beams with either uniformly distributed loads or typical girder loadings.

The resulting instructional unit will be designed as an addition to a course in structural wood design at the vocational-technical/community college level.