Engineering Commons^™

Effects Of Retarding Admixtures On Plastic Shrinkage Of Portland Cement Paste : Interim Report, Hanume Gowda

JTRP Technical Reports

No abstract provided.

The Effect Of Quasi-Preconsolidation On Compression Of Clay Soils : Interim Report, John Leitch Davidson

JTRP Technical Reports

No abstract provided.

Changing Characteristics Of High Accident Drivers Over A Five Year Period : Technical Paper, John Earl Goodson, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Operational Planning Of Fixed-Route And Demand-Responsive Bus Systems In Greater Lafayette Area, Antoine George Hobeika

JTRP Technical Reports

No abstract provided.

An Evaluation Methodology For The Selection Of An Interchange Configuration : Technical Paper, Thomas Ernest Mulinazzi, Gilbert T. Satterly

JTRP Technical Reports

No abstract provided.

Determination Of Atterberg Limits Using Moisture Tension Methods : Technical Paper, Ahmed Atef Gadallah, Eugene Robert Russell, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

Guidelines For The Selection Of An Interchange Configuration, Thomas Ernest Mulinazzi

JTRP Technical Reports

No abstract provided.

Factors Influencing The Performance Of Continuously Reinforced Concrete Pavements : Technical Paper, Asif Faiz, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

The Specific Surface Of Hardened Portland Cement Paste As Measured By Low-Angle X-Ray Scattering, Douglas Windslow

JTRP Technical Reports

No abstract provided.

Dynamic Modulus Of Bituminous Mixtures As Related To Asphalt Type, Larry L. Yeager

JTRP Technical Reports

No abstract provided.

Laboratory Evaluation Of The Response Of Reinforced Concrete To Internal Vibration, Phase I : Final Report, Olubayo Timothy Olateju

JTRP Technical Reports

No abstract provided.

Han Sido Publicados Los Resultados De La Experiencia “Tektite Ii”, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Evaluation Of Factors Influencing Driveway Accidents : Interim Report, William Walter Mcguirk

JTRP Technical Reports

No abstract provided.

A Study Of Bus Transit Planning In Small Urban Areas, Michael Stephen Herman, Gilbert T. Satterly, William Louise Grecco, Kenneth W. Heathington

JTRP Technical Reports

No abstract provided.

A Technique For Improving Material Balance Accuracy In Reservoir Simulation Models, A. R. Merchant, Marion D. Arnold, A. Herbert Harvey

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

One criterion for determining the precision of pressures calculated by a simulation model is the accuracy of the material balance. A high degree of precision in the calculated pressures is a necessary but not sufficient condition for elimination of significant errors in the prediction of fluid migration in the reservoir. A new procedure, called error matrix technique, has been developed for reduction of material balance errors. This reduction is accomplished by adjusting potential gradients at every grid point in the simulation model so that the material balance is accurately maintained. Performance of a hypothetical oil reservoir was simulated both by …

Stratigraphic Relations Of Members Of The Needles Range Formation At Type Localities In Southwestern Utah, M. G. Best, R. T. Shuey, C. F. Caskey, S. Kerry Grant

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The Needles Range Formation is one of the most extensive of the middle Tertiary ash-flow sheets in the Great Basin of Nevada and western Utah. The original definition of the formation by Mackin (1960) named two members and mentioned three type localities. Our recent studies have shown that this published information now requires revision. To provide a firm basis for stratigraphic studies of the Needles Range Formation, this paper presents geologic maps, measured sections, and paleomagnetic data for three type localities in southwestern Utah. These include the northern Needles Range and Wah Wah Springs localities previously mentioned by Mackin, plus …

Oxidation Of Tetragonal Pbo In Air, Charles A. Sorrell

Materials Science and Engineering Faculty Research & Creative Works

Isothermal oxidation of tetragonal PbO in air produced multiphase assemblages with apparent equilibrium compositions which varied linearly with temperature from PbO1.548 at 286°C to PbO1.333 at 351°C. Oxidation at each temperature was relatively rapid to PbO1.40 and very slow from PbO1.40 to apparent equilibrium values. Pseudocubic PbO1+x, with compositions between PbO1.41 and PbO1.57, was indexed on a cubic unit cell at the lower O/Pb ratios and on a tetragonal unit cell at the higher ratios. Linear changes in lattice parameters and deviation from cubic symmetry accompanied reversible oxidation and reduction of the phase. Pseudocubic PbO1+x was reduced irreversibly to Pb3O4 …

Polynary Silicon Arsenic Chalcogenide Glasses With High Softening Temperatures, H. E. Anthonis, N. J. Kreidl, W. H. Ratzenboeck

Materials Science and Engineering Faculty Research & Creative Works

The introduction of Ag in SiAsTe glasses permits the incorporation of Se, otherwise volatile and/or degradable as a constituent in Si-containing chalcogenide glasses. SiAsAgTeSe glasses exhibit much higher softening ranges and glass transition temperatures than encountered in known chalgogenide systems. A glass Si35As15Ag10Te20Se20 had the viscosity log ν = 13 at about 500°C, as compared to 370°C for the base glass Si35As25Te40, the viscosity of log ν = 9.8 at about 560°C, as compared to 442°C for the base glass. Phase separation occurs in the system SiAsAgTeSe and becomes manifest in two glass transitions indicated by changes in the slopes …

Oxidation State Control Of Volatile Species In Sintering, P. D. Ownby

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

An Investigation Of Combined Thermal Weakening And Mechanical Disintegration Of Hard Rock, George Bromley Clark, T. F. Lehnhoff, Vernon Dale Allen, Mahendrakumar Ramkrishna Patel

Mining Engineering Faculty Research & Creative Works

"The research under modified Contract No. H0220068 has been devoted to experimental thermal-mechanical fragmentation of Missouri red granite in place, and to supporting theoretical analyses. The results of the previous year's experimental work showed that thermal stresses are several times more effective in fragmenting hard rock when they are created within the rock rather than upon the surface. Also, large blocks {4-foot cubes) are not adequate to simulate the response of in situ rock.

Based upon laboratory tests an experimental round was designed analogous to an explosive blasting round with coiled wire heating elements placed in drill holes. Three displacement …

An Accurate Digital Instrument To Measure Reactor Period, Ernest W. Scott, Paul D. Stigall

Electrical and Computer Engineering Faculty Research & Creative Works

At Facilities Having a Research-Training Reactor, such as the University of Missouri-Rolla Reactor (UMRR), One Finds It Necessary to Perform a Large Number of Rod Calibrations during the Course of the Year. in Practice Rod Worths Are Determined by Measuring the Reactor Period Created by an Incremental Withdrawal of the Rod under Calibration. Period is Then Related to Reactivity Thru the Use of a Publication Such as the AEC Publication, ID016485. This Frequent Measurement of Period Makes It Desirable to Have a Simple, Automatic and Accurate Method to Make Such Measurements. at UMRR We Have Designed, Constructed and Installed Such …

Use Of Precast-Prestressed Concrete For Bridge Decks : Interim Report, Peter Karl Kropp

JTRP Technical Reports

No abstract provided.

An Investigation Of The Effects Of Variations In Coarse Aggregate Gradation On Portland Cement Concrete, Stephen Daugherty Baker

JTRP Technical Reports

No abstract provided.

Use Of Shale In Embankments : Technical Paper, Purushottam Deo, Leonard E. Wood, C. W. Lovell

JTRP Technical Reports

No abstract provided.

Building Embankments With Shales : Technical Paper, Leonard E. Wood, C. W. Lovell, Purushottam Deo

JTRP Technical Reports

No abstract provided.

Effect Of Acceleration On Material Properties : Interim Report, Hari D. Sharma

JTRP Technical Reports

No abstract provided.

0057: Addison Moffat Scott Papers, 1873-1939, Marshall University Special Collections

Guides to Manuscript Collections

Charleston, West Virginia, engineer. Papers relate to the construction and improvement of navigation on the Great Kanawha River with the first system of locks and dams. Includes bid proposals and specifications for the construction of locks, dams, and buildings.

Loci Of Invariant-Azimuth And Invariant-Ellipticity Polarization States Of An Optical System, Rasheed M.A. Azzam, N. M. Bashara

Electrical Engineering Faculty Publications

The loci of polarization states for which either the ellipticity alone or the azimuth alone remains invariant upon passing through an optical system are introduced. The cartesian equations of these two loci are derived in the complex plane in which the polarization states are represented. The equations are quartic and are conveniently expressed in terms of the elements of the Jones. matrix of the optical system. As an exple the loci are determined for a system composed of a π/4 rotator followed by a quarter-wave retarder.

Device For Obtaining From Small Ponds Water Samples Or Lagoons, J. Kent Mitchell, Elbert C. Dickey

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A research project was recently initiated which requires that water quality samples be taken from small ponds and lagoons in west-central Illinois. A method for obtaining these pond water samples was desired that could be handled conveniently by one person and would not require a small boat. The pond water sampler described here was developed to satisfy this need.

The sampler developed allows one person to obtain a water sample at any desired depth while remaining on the shore. After assembling the device it may be floated to any position on the pond surface, lowered to the desired depth, and …

Sampling Pond Water Without A Boat, Elbert C. Dickey, J. Kent Mitchell

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Nitrate levels in farm ponds are determined with the aid of a water sampler that can be operated from the shore

The quality of pond water in southern and western Illinois is being determined with the aid of a new type of water sampler developed in the Department of Agricultural Engineering.

Work on the sampler began as part of a study of water supplies in Washington County. This study, which is being conducted through the College of Agriculture Council on Environmental Quality, was initiated in the winter of 1970, after high nitrate levels were found in the county's water supplies. …