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Articles 81601 - 81630 of 82957

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"Findings And Recommendations Of The Sagamore Conference On Urban Highway Development", Alan M. Voorhees Mar 1960

"Findings And Recommendations Of The Sagamore Conference On Urban Highway Development", Alan M. Voorhees

Kentucky's Annual Forum on Transportation

No abstract provided.


"Maintenance Policy And Practices Of The Bureau Of Public Roads", Harold G. Tipton Mar 1960

"Maintenance Policy And Practices Of The Bureau Of Public Roads", Harold G. Tipton

Kentucky's Annual Forum on Transportation

No abstract provided.


"Problems In Highway Bridge Design, Fabrication And Erection", E. L. Durkee Mar 1960

"Problems In Highway Bridge Design, Fabrication And Erection", E. L. Durkee

Kentucky's Annual Forum on Transportation

No abstract provided.


"Methods For Selecting Roads For The Rural Secondary Program", L. A. Whitmer Mar 1960

"Methods For Selecting Roads For The Rural Secondary Program", L. A. Whitmer

Kentucky's Annual Forum on Transportation

No abstract provided.


Address [1960], Bert T. Combs Mar 1960

Address [1960], Bert T. Combs

Kentucky's Annual Forum on Transportation

No abstract provided.


"Highways And People", Ellis L. Armstrong Mar 1960

"Highways And People", Ellis L. Armstrong

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky Highway Conference Program [1960], Kentucky Transportation Center Mar 1960

Kentucky Highway Conference Program [1960], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Proposed Specification For Bridge Paints, James H. Havens Mar 1960

Proposed Specification For Bridge Paints, James H. Havens

Kentucky Transportation Center Research Report

On July 30, 1958, two proposed bridge paint system specifications were submitted by this Division for Department consideration. Since that time, there have been several discussion sessions between various paint industry, representatives, members of the Department Specifications Committee, and J. H. Havens, Assistant Director of Research. Mr. Havens has been requested by the Specifications Committee to re-write one of the specifications, BASIC LEAD SILICO-CHROMATE, OIL-ALKYD PAINT SYSTEMS FOR IRON AND STEEL STRUCTURES (BRIDGES), and to prepare an additional specification covering, PHENOLIC RESIN PENETRATING LIQUID PAINT SYSTEM FOR IRON AND STEEL STRUCTURES (BRIDGES).


Cold-Weather Concreting, Milton Evans Jr. Feb 1960

Cold-Weather Concreting, Milton Evans Jr.

Kentucky Transportation Center Research Report

In order to successfully place concrete in cold weather, certain established requirements must be met. The concrete must not be allowed to freeze, it must not be overheated by artificial means in an attempt to protect it from the cold, and proper curing conditions must be maintained during the period of protection to insure sufficient moisture for the cement to hydrate. Generally, temperatures of not less than 50°F and not more than 90°F are satisfactory. These temperatures must be maintained long enough for the concrete to develop sufficient strength to withstand freezing temperatures and to support the loads. Generally, concretes …


Limestone Fine Aggregate In Portland Cement Concrete, George R. Laughlin Feb 1960

Limestone Fine Aggregate In Portland Cement Concrete, George R. Laughlin

Kentucky Transportation Center Research Report

Limestone is classified as a carbonaceous sedimentary rock. In general, the term is applied only to those rocks in which the carbonate fraction exceeds the non-carbonate fraction. The carbonate may be calcite and/or dolomite. In addition to the primary constituents, there are contaminating minerals such as quartz, clay minerals, chalcedony (chert and flint), pyrite, feldspars and organic matter. The clay minerals are probably the most deleterious contaminates in carbonate rock.


Morton’S Gap Culvert-Pipe Installation, James H. Havens Feb 1960

Morton’S Gap Culvert-Pipe Installation, James H. Havens

Kentucky Transportation Center Research Report

The attached report, "Interim Performance Report on Morton's Gap Culvert Pipe Installation", by James H. Havens, is primarily a listing of the status of the condition of pipe still in the test and the date of failure or removal of the other sections.

Mr. Havens has prepared as background information, a brief record of the Department's practices involving pipe use for the past 10 years. He has begun with the Research Division's first study into pipe damaged by the corrosive action of acid water. This information is presented primarily because of its significance in the development of the culvert pipe …


Instructions For Contributors, Academy Editors Jan 1960

Instructions For Contributors, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.


Analysis And Synthesis Of A Current Regulator System, William P. Aiello Jan 1960

Analysis And Synthesis Of A Current Regulator System, William P. Aiello

Electrical and Computer Engineering ETDs

This report describes a practical current regulator system used to accurately control the current delivered by a 500 kilowatt motor-generator unit. The generator supplies its current of 2000 amperes at 250 volts to a large water-cooled air-core solenoid used by LASL Group P-7 for experiments in connection with the Sherwood program.

After a general discussion of the system specifications and the basic regulator loop, each of the components in the basic regulator loop is described in considerable detail. The description, in most cases, is mathematical in nature although many circuit diagrams are included with brief descriptions when necessary for proper …


Termites Or White Ants, Clee Francis Howard Jenkins Jan 1960

Termites Or White Ants, Clee Francis Howard Jenkins

Journal of the Department of Agriculture, Western Australia, Series 4

TERMITES are commonly but erroneously called "white ants."

Actually they are more nearly related to cockroaches than to ants, but their general appearance and subterranean habits have given strong support to the popular designation.

They may be divided into two major groups from an economic point of view, viz., wood-dwelling and earth-dwelling termites.


The Burnett Control Gate For Irrigation Channels, B Swan Jan 1960

The Burnett Control Gate For Irrigation Channels, B Swan

Journal of the Department of Agriculture, Western Australia, Series 4

THIS type of check-gate for use in irrigation ditches, was evolved on the Kimberley Research Station and has definite advantages over wooden or concrete structures in that it is termite-proof and can be removed and replaced in a few minutes to permit of the channel being cleaned out by straight runs with modern machinery.


Making Your Own Beehives, R S. Coleman Jan 1960

Making Your Own Beehives, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

THE publication of this article runs counter to my own principles to some extent as I have long maintained that most beekeepers will find it cheaper in the long run to purchase factory-made hives and frames.

I realise, however, that many apiarists possess both the skill and equipment to make hive-bodies, and that some at least can occupy slack periods profitably in this manner.


Comprehensive Survey Of Sedimentation In Lake Mead, 1948-49, W. O. Smith, C. P. Vetter, G. B. Cummings, U.S. Bureau Of Reclamation Jan 1960

Comprehensive Survey Of Sedimentation In Lake Mead, 1948-49, W. O. Smith, C. P. Vetter, G. B. Cummings, U.S. Bureau Of Reclamation

Publications (WR)

Reservoirs are becoming an increasingly prominent feature of the American landscape. Built for flood mitigation and to change a fluctuating river into a dependable source of water for irrigation, power, and other purposes, they are predestined, like natural lakes, to be destroyed sometime following their creation. Sedimentation sooner or later robs most lakes and reservoirs of their capacity to store water. The significance of sedimentation in the life of Lake Mead, the largest artificial reservoir in the world, was realized when the plan for the reservoir was conceived, and an aerial survey of the floor was made in 1935 before …


Irrigation In Western Australia : Report On Government-Controlled Areas : 1958-59, H K. Gibsone Jan 1960

Irrigation In Western Australia : Report On Government-Controlled Areas : 1958-59, H K. Gibsone

Journal of the Department of Agriculture, Western Australia, Series 4

IRRIGATION in the south-western portion of Western Australia is mainly confined to the coastal plain west of the Darling Range where the three main irrigation districts of Harvey, Collie and Waroona have been established by the State Government.

The Government-controlled irrigation areas extend southward from Waroona (70 miles from Perth) to Dardanup (120 miles from Perth) and have an average width of about five miles.


Bulk Handling Of Superphosphate, H G. Cariss Jan 1960

Bulk Handling Of Superphosphate, H G. Cariss

Journal of the Department of Agriculture, Western Australia, Series 4

A MAJOR factor in our agricultural production is the outlay for fertilisers, including the cost of their application to the land.

Any means which can be employed to reduce these costs are therefore of extreme importance to the State's agriculture.

The bulk-handling of fertilisers could be one way of reducing these costs to the farmer.


Temperature Distribution In A Semi-Infinite Solid As A Function Of The Input Heat Flux, Lloyd Carl Laciny Jan 1960

Temperature Distribution In A Semi-Infinite Solid As A Function Of The Input Heat Flux, Lloyd Carl Laciny

Masters Theses

"In this thesis the problem of varying heat flux into a semi-infinite solid initially at zero temperature is investigated. Varying heat flux means that the heat transferred to the solid by its surroundings is a function of time; in this particular problem it is chosen to be an exponential function of time. A semi-infinite solid is one which is bounded by only one plane.

This subject has achieved considerable importance in the field of space technology. A body in space is beyond the realm of aerodynamic heating and non-uniform skin temperatures reached as a result of radiation from a high …


Preparation Of Casting Slips Containing Ferrous Powders And Alginates, Robert Eugene Newcomer Jan 1960

Preparation Of Casting Slips Containing Ferrous Powders And Alginates, Robert Eugene Newcomer

Masters Theses

"The preparation of casting slips containing ferrous powders dispersed by alginates was studied and an attempt was made to determine the mechanism by which suspension was attained. The colloidal aspects of preparing ceramic casting slips are discussed and an analogy is drawn to preparation of metallic slips suspended by alginates.

Sodium and ammonium alginates were used to suspend stainless steel and iron powders. The effect of NaOH, HC1, and various phosphate additions on the properties of slips and algin solutions was considered.

It was found that colloidal concepts can not be applied to explain observed behavior in the system studied. …


A Study Of The Feasibility Of Stabilizing Putman Soil With Hydrated Lime And Portland Cement In Combination, John Henry Kern Jan 1960

A Study Of The Feasibility Of Stabilizing Putman Soil With Hydrated Lime And Portland Cement In Combination, John Henry Kern

Masters Theses

"This paper is the report of a feasibility study of the combined use of hydrated lime and portland cement to stabilize the troublesome Putnam soil of northern Missouri. In its natural state, this soil is highly plastic, possesses great shrinkage and swell characteristics when the moisture content is changed and is classified as an A-7-5 soil by the A. A. S. H. O. Standards for the Classification of Highway Subgrade Materials.

During the course of this investigation, the following tests were performed: (1) Moisture-Density Relationships for soil with admixtures; (2) Triaxial Compression Test; (3) Unconfined Compression Tests; (4) Freeze-Thaw Tests; …


A Study Of The Reaction Of Hydrated Lime With Pure Clay (Kaolin) In Clay Stabilization, Chiyyarath Velayudhan Girijavallabhan Jan 1960

A Study Of The Reaction Of Hydrated Lime With Pure Clay (Kaolin) In Clay Stabilization, Chiyyarath Velayudhan Girijavallabhan

Masters Theses

"The work presented is the investigation of the reaction of pure Kaolinite clay with hydrated lime in clay stabilization. Pure Kaolin clay, ranging from one micron to five microns in size, was mixed with calcium hydroxide in the form of a paste. These mixtures were permitted to react for varying periods of time. An attempt was made to separate the lime from clay lime mixture by density separation using a mixed solution of carbon tetrachloride and tetrabromoethane. Since the above method failed because of the formation of a yellow gelatinous suspension, the lime was removed by washing the clay lime …


Locating Slippery Highway Sites By Accident Analysis : Technical Paper, Vergil G. Stover, Harold L. Michael Jan 1960

Locating Slippery Highway Sites By Accident Analysis : Technical Paper, Vergil G. Stover, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Evaluation Of Major Urban Intersections, William Walter Schenler Jan 1960

Evaluation Of Major Urban Intersections, William Walter Schenler

JTRP Technical Reports

No abstract provided.


Photogrammetric Measurement Of Final Pay Quantities In Highway Construction : Technical Paper, Russel R. Johnson, Robert Douglas Miles Jan 1960

Photogrammetric Measurement Of Final Pay Quantities In Highway Construction : Technical Paper, Russel R. Johnson, Robert Douglas Miles

JTRP Technical Reports

No abstract provided.


Design Of A Pressure Sensitive Cell And Model Studies Of Pressures In The Subgrade Of A Flexible Pavement System : Technical Paper, Thurmul Francis Mcmahon, Eldon J. Yoder Jan 1960

Design Of A Pressure Sensitive Cell And Model Studies Of Pressures In The Subgrade Of A Flexible Pavement System : Technical Paper, Thurmul Francis Mcmahon, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.


Design And Construction Of Hydraulic Flume And Backwater Effects Of Semi-Circular Constrictions In A Smooth Rectangular Channel : Progress Report No. 2, H. J. Owen Jan 1960

Design And Construction Of Hydraulic Flume And Backwater Effects Of Semi-Circular Constrictions In A Smooth Rectangular Channel : Progress Report No. 2, H. J. Owen

JTRP Technical Reports

No abstract provided.


Factors That Influenced Homesteading And Land Abandonment In San Juan County, Utah, Melvin J. Frost Jan 1960

Factors That Influenced Homesteading And Land Abandonment In San Juan County, Utah, Melvin J. Frost

Theses and Dissertations

Homesteading in San Juan County, Utah is for the most part, located on Sage Plain at elevations between 6,000 to 7,200 feet. Sage Plain is an undulating surface deeply dissected with canyons. The soil is relatively shallow and the predominant vegetation is pinyon, juniper, sage brush and blue-stem grass.

The 52 year mean precipitation is 15.47 inches. Since the beginning of weather records there has been a noticeable decrease in the annual precipitation. There is generally sufficient moisture to mature winter wheat. Pinto beans are also grown in the more favorable locations.

Principle factors that have influenced homesteading and land …


The Separation Of Selected Radioactive Fission Products By Electrodialysis, Jerry David Vie Jan 1960

The Separation Of Selected Radioactive Fission Products By Electrodialysis, Jerry David Vie

Masters Theses

"The recent advent of nuclear energy has opened an era of almost unlimited power and countless problems. A problem of extreme importance is the recovery of unburned nuclear fuel and the claiming of transmutation products, such as Pu239 and U233, from the irradiated fuel elements. The chemical processing must also separate the fission products from the fissionable material if the fuel is to be used again.

At present, the irradiated fuel elements are stored for 90 to 120 days to allow the intense short half-life activity to decay. After "cooling down", the nuclear fuels are separated from …