Digital Commons Network^™

Testing Of Solar Collectors By A Standard Method, Harry J. Sauer Jr., Bassem F. Armaly

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

A description of the recently adopted standard for testing solar collectors "ASHRAE STANDARD 93-77, METHOD OF TESTING SOLAR COLLECTORS BASED ON THERMAL PERFORMANCE" is presented. Results from the standard could be used to simulate the transient performance of an installed solar system.

Effect Of Pentobarbital Anesthesia On Ventricular Defibrillation Threshold In Dogs, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

The effect of pentobarbital anesthesia upon the minimal voltage and current required for electrical ventricular defibrillation (the defibrillation threshold) was investigated in dogs. Threshold current, energy, and charge in five dogs averaged 2 per cent, 13 per cent, and 6 per cent less under surgical levels of pentobarbital anesthesia than thresholds in the same animals in the awake, unanesthetized state. In dogs given sufficient pentobarbital to produce apnea and supported by mechanical ventilation, threshold current, energy, and charge averaged 3 per cent, 17 per cent, and 2 per cent less than comparable awake values. These differences were far from statistically …

Protection Of Ischemic Myocardium By Whole-Body Hypothermia After Coronary Artery Occlusion In Dogs, Dana R. Abendschein, Willis A. Tacker Jr, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Anesthetized dogs were cooled to a core body temperature of 26°C or maintained at a body temperature of 37°C during periods of 5 and 10 hours of LAD coronary artery occlusion. Subsequent macroscopic dehydrogenase enzyme mapping showed that ischemic injury was 25 per cent less after 5 hours of coronary occlusion and 20 per cent less after 10 hours of occlusion in hypothermic dogs than in normothermic controls. The heart rate and left ventricular minute work in hypothermic dogs decreased to roughly half the levels measured in normothermic animals, while left ventricular contractility was 10 to 40 per cent lower …

Evaluation Of The Operating Internal Resistance, Inductance, And Capacitance Of Intact Damped Sine Wave Defibrillators, Charles F. Babbs, S J. Whistler

Weldon School of Biomedical Engineering Faculty Publications

A method is developed for determining actual values of circuit elements in a damped sine wave (Lown waveform) defibrillator, solely from measurements of the output, using two or more power resistors and a storage oscilloscope. If a defibrillator containing capacitance, C, inductance, L, and internal resistance, Ri, is discharged into increasing 5- to 100-ohm resistive loads, R, it is shown for underdamped output waveforms that aˆ = Ri/2L + R/2L and cˆ = CRi + CR, where aˆ = /[t2 tan(t1/t2)], cˆ = 2 aˆ /[ 2 aˆ + (/t2)2], t1 = time from onset to peak, and t2 = …

Temporal Stability And Precision Of Ventricular Defibrillation Threshold Data, Charles F. Babbs, S J. Whistler, G Yim

Weldon School of Biomedical Engineering Faculty Publications

Over two-hundred measurements of the minimum damped sinusoidal current and energy for transchest electrical ventricular defibrillation (ventricular defibrillation threshold) were made to determine the stability and precision of threshold data in 15 pentobarbital-anesthetized dogs. Threshold was determined by repeated trials of fibrillation and defibrillation with successive shocks of diminishing current, each 19% less than that of the preceeding shock. The lowest shock intensity that defibrillated was defined as threshold. In three groups of five dogs each, threshold was measured at intervals of 60, 15, and 5 min. over periods of 8, 5, and 1 hr. respectively. Similar results were obtained …

Test 1286: Kubota L185 Dt Diesel, 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 1288: Ford Fw-30 Diesel W/O Pto (20-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 1290: Ford Fw-40 Diesel, 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 1292: Fiat 580 Dt Diesel 12 And 16-Speeds, 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 1294: Fiat 780 Diesel 12 And 16-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 1295: Case 2090 Powershift Diesel, 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 1291: Ford Fw-20 Diesel, 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 1269: Lamborghini 1056 Dt Dsl, 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 1270: Allis-Chalmers 5020 Dsl, 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 1272: Steiger Bearcat Iii Pt-225 And St-225 Diesel (Also Steiger Bearcat Iii Pt-225 Without Pto) 20-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 1273: Steiger Couger Iii Pt-270 With Or Without Pto (20-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 …

Web Crippling Strength And A Combination Of Bending And Web Crippling Of Cold-Formed Steel Beams, Nipon Hetrakul

Doctoral Dissertations

"The web crippling strength of cold-formed steel beams was investigated experimentally. In this investigation, due consideration was given to the possible influence of bending moment and shear force on the web-crippling loads.

For the subject of web crippling strength, the study involved the testing of 140 built-up beams having single unreinforced webs and 152 I-beams having double webs. In addition, 66 beam tests were conducted for the case of combined bending moment, shear and web crippling.

The experimental results obtained from the beam tests conducted at the University of Missouri-Rolla and the early tests performed previously at Cornell University were …

Variable Elimination For Optimization With Difficult Explicit Inequality Constraints, R. C. Kelahan, J. L. Gaddy

Chemical and Biochemical Engineering Faculty Research & Creative Works

No abstract provided.

Nucleate Boiling Of N-Pentane, N-Hexane And Several Mixtures Of The Two From Various Tube Arrays, K. W. Wall, Efton Park

Chemical and Biochemical Engineering Faculty Research & Creative Works

No abstract provided.

Vapor Pressures For The System Isobutane-Isobutylene-N-Butane, José A. Martünez-Ortiz, David B. Manley

Chemical and Biochemical Engineering Faculty Research & Creative Works

New experimental vapor pressures for the ternary system composed of Isobutane-isobutylene-n-butane from 40 to 160 °F and 20 to 160 psia are presented. The data have an estimated average accuracy of 0.04%. The pure component data are compared with existing data from the literature. © 1978, American Chemical Society. All rights reserved.

Characteristics Of Kentucky Drivers, Kenneth R. Agent

Kentucky Transportation Center Research Report

The characteristics of the driver population in Kentucky were examined and related to their driving record. Also, the characteristics of high-risk drivers were determined and compared to the driver population. Accident records and responses to a questionnaire distributed to a random sample of the driver population and to high-risk drivers were the data source for the study.

Frequency of accidents was found to be much higher among males than it was among females and was highest among teenage drivers. However, females had a higher accident rate. Teenage drivers had the highest accident rate. The rate decreased for middle-aged drivers and …

The Biology Instrument For The Viking Mars Mission, Frederick S. Brown, H.E. Adelson, M.C. Chapman, O.W. Clausen, A.J. Cole, J.T. Cragin, R.J. Day, C.H. Debenham, R.E. Fortney, R.I. Gilje, D.W. Harvey, J.L. Kropp, S.J. Loer, J.L. Logan, Jr., W.D. Potter, G.T. Rosniak

Systems Engineering Faculty Works

Two Viking spacecraft have successfully soft landed on the surface of Mars. Each carries, along with other scientific instruments, one biology laboratory with three different experiments designed to search for evidence of living microorganisms in material sampled from the Martian surface. This 15.5-kg biology instrument which occupies a volume of almost 28.3 dm3 is the first to carry out an in situ search for extraterrestrial life on a planet. The three experiments are called the pyrolytic release, labeled release, and gas exchange. The pyrolytic release experiment has the capability to measure the fixation of carbon dioxide or carbon monoxide into …

Nucleate Boiling Heat Transfer Of Liquid Nitrogen From Plasma Deposited Polymer Coated Surfaces, Donald L. Warner, Efton Park, Kenneth G. Mayhan

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

In certain cases, nucleate boiling heat transfer from polymerized tetrafluoroethylene coated surfaces was more than five times the rate of heat transfer found for uncoated surfaces at a given temperature difference. It was also found that for the polymer coated surfaces the transition from nucleate to film boiling was much slower than for uncoated surfaces. © 1978.

Farm Irrigation System Evaluation: A Guide For Management, John L. Merriam, Jack Keller

Civil and Environmental Engineering Faculty Publications

This manual describes and explains detailed procedures for field evaluation of the performance of several types of sprinkle, surface, and trickle (drip) irrigation systems and of management practices. Most chapters include lists of equipment needed for performing these evaluations, give step-by-step instructions for gathering data in the field, show sample forms for recording and organizing these field data, and present sample studies that demonstrate the entire process. The book includes analyses and recommendations for a few actual case studies.

The introduction states and explains the general concepts of uniformity, efficiency, and management that are used in evaluating each system and …

Vulnerability Of Water Supply Systems To Drought, D. T. Jensen

Reports

The objective of this study is to develop a relatively simple and practical method for improving the availability and reliability of information about droughts to those responsibile for water supply management and planning. The information technique developed provides an objective basis for the selection of wate rsupply management alternatives during periods of drought. The derived drought information can assist water supply planners and managers in identifying priorities among proposed water supply developments fron consideration of water supply vulnerability and exisitng drought severity levels. Two drought indices are developed to achieve the overall objective of the study: (1) the drought severity …

1978-87 Publications Of The Uwrl, Utah Water Research Laboratory

Reports

This brochure is a listing of publications of the Utah Water Research Laboratory, College of Engineering, at Utah State University, Logan, Utah, for 1978 through 1985. Six categories of publications are included: Atmospheric Water Resources Series, General Series, Hydraulics and Hydrology Series, Water Resources Planning Series, Water Quality Series, and Other Publications. Publications out of print may obtained on a short time loan basis from the UWRL Library. When inquiring about or ordering Utah Water Research Laboratory publications please address: Utah Water Research Laboratory Publications Utah State University Logan, UT 84322-8200

Design And Operating Criteria For Rural Water Systems, James E. Garton, Gary L. Goodwin, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Rural homesites in the United States require the availability of high quality water. One means of meeting this need is with the rural water district, a system composed of tank storage and a pipe network serving a number of homes. The tanks are filled by pumping during periods of minimal water use and serve as the immediate water source for homes.

Optimum design requires consideration of not only immediate needs and economic factors but also the possibility of expansion at some future date. Accurate prediction of monthly usage rates is sometimes necessary to set contractural needs. Daily water use per …

Water Quality Enhancement By Point Destratification, Richard C. Peralta, J. E. Garton

Civil and Environmental Engineering Faculty Publications

No abstract provided.

Information Systems For Natural Resources Managers: An Exercise In Interfacing, Connie L. Knapp

Marine Affairs Theses and Major Papers

This thesis proposes guidelines for achieving the human interfaces which are requisite to the development and operation of natural resources information systems. Conclusions were drawn from an evaluation of past experiences in building and attempting to use these types of systems. Both successful and unsuccessful systems were considered, as well as the current effort in Rhode Island to develop a system for coastal resources managers. Examples are presented to support particular conclusions and recommendations. The perspective is nontechnical. Examples and recommendations, therefore, are conceptual rather than quantitative or technical. While a variety of mechanisms can be used to achieve the …

Concrete Ships, Mark L. Lavache

Marine Affairs Theses and Major Papers

The incentive behind this study is based on a two-fold premise: 1) that a comprehensive outline of the historical development of concrete shipbuilding and its related technologies is either non-existent or defies discovery, and 2) that although this study is neither based on a hypothesis, nor intended to resolve a problem area or promote a position, its merit lies in its inductive nature. Included are explanations of of the various compositions, uses, and construction techniques relating to reinforced concrete, ferro-cement, and prestressed concrete.