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Articles 18211 - 18240 of 18341
Full-Text Articles in Entire DC Network
Space Journal, Vol. 1, No. 3, Summer 1958, Rocket City Astronomical Association, Space Enterprises, Inc.
Space Journal, Vol. 1, No. 3, Summer 1958, Rocket City Astronomical Association, Space Enterprises, Inc.
Space Journal
No abstract provided.
Projecting With Space Journal, James L. Daniels Jr.
Projecting With Space Journal, James L. Daniels Jr.
Space Journal
No abstract provided.
Life On Other Stars - Part Ii, Enrst Stuhlinger
The Purpose Of Man In The Universe, John Hulley
Beyond This Star, James L. Daniels Jr.
Rocket Mail To The Moon, Harold W. Richey
Space Journal, Vol 1, No. 2, Spring 1958, Rocket City Astronomical Association, Space Enterprises, Inc.
Space Journal, Vol 1, No. 2, Spring 1958, Rocket City Astronomical Association, Space Enterprises, Inc.
Space Journal
No abstract provided.
Use Of Chemicals For Controlling Highway Vegetation, J. R. Mccambridge
Use Of Chemicals For Controlling Highway Vegetation, J. R. Mccambridge
Kentucky's Annual Forum on Transportation
No abstract provided.
Operational Characteristics Of A Small Sewage Oxidation Lagoon, Karlheinz C. Muhlbauer
Operational Characteristics Of A Small Sewage Oxidation Lagoon, Karlheinz C. Muhlbauer
Masters Theses
"With the rapidly increasing population in the United States the adequate disposal of sewage has become one of the major technical problems which the sanitary engineer has to solve. In most areas it is no longer acceptable practice to discharge domestic sewage or industrial waste products directly into streams or lakes because of the resulting pollution of the water, which may later be used for drinking or recreational purposes. Many larger cities have, therefore, adopted some method of sewage treatment which renders such wastes safe and unobjectionable before they are discharged into a lake or stream. Most of these methods …
Design Of Liquid-Liquid Extraction System, Mehdi Rahmani Fard
Design Of Liquid-Liquid Extraction System, Mehdi Rahmani Fard
Masters Theses
"The unit operation of liquid-liquid extraction has developed enormously in the last 20 years and is now recognized as one of the most important techniques for the physical separation and refining of industrial liquids. For years the conventional apparatus used for liquid-liquid extraction has been towers employing countercurrent flow of the liquids and equipped with various means to increase the interfacial area.
The countercurrent column consists of a tower through which flows a continuous phase while countercurrent to this flow is a stream of droplets (the dispersed phase). Provision is made for dispersing one phase with a settling region at …
Engineer Intelligence Guide 13, Glossary Of Natural Terrain Features, November 1957, Army Map Service, Robert Bolin , Depositor
Engineer Intelligence Guide 13, Glossary Of Natural Terrain Features, November 1957, Army Map Service, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
To paraphrase the introduction, this glossary of natural terrain features is intended as a reference for military personnel and others who may use terrain studies. It also many serve as a guide to producers of Engineer terrain studies by standardizing and restricting the use of technical terms. It includes terms from many fields including physical geography, geology, hydrography, galciology, botany, and pedology. This is an alphabetic list of terms keyed to three appendices. The appendices are line drawings illustrating various sorts of terrain features. Where a term is shown on one of the appendices the number of the appendix and …
A Method Of Developing Engineering Soil Maps For Kentucky, Robert C. Deen
A Method Of Developing Engineering Soil Maps For Kentucky, Robert C. Deen
Kentucky Transportation Center Research Report
No abstract provided.
The Use Of Perlite As An Adsorbent, John Herrick Eigler
The Use Of Perlite As An Adsorbent, John Herrick Eigler
Theses
The adsorptive properties of perlite, an expanded volcanic glass, have been studied. Several activating treatments were investigated, air oxidation it 400 degrees Centigrade appears to be the best, The adsorption of the basic dye emethylene blue yields a saturation valve of 50 milligrams per gram of perlite. The acid dye cotton blue showed no measurable adsorption. A maximum adsorption of 15 millimoles of acetic acid and one milligram of iodine were found in aqueous solution. A high value of 1.33 milligrams of iodine per gram of perlite were found in methyl alcohol solutions. The surface area of perlite appears to …
Temperature Forecasting At Logan, Utah, For The Snowmelt-Runoff Season, Clifton Johnson
Temperature Forecasting At Logan, Utah, For The Snowmelt-Runoff Season, Clifton Johnson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this thesis is to investigate the practicability of forecasting temperatures for the spring and summer snowmelt-runoff season. A successful temperature forecast for Logan, Utah, would be useful in studies of Logan River streamflow, as well as other related applications.
Logan, Utah, is situated in a region where the snow accumulates during the winter and early spring at high altitudes and remains until the proper sequence of meteorological events provides the thermodynamic conditions essential for melting. Snow surveys provide an index to the water available on a watershed. Temperature conditions during the melt period largely determine the available …
A Study Of The Variation Of The Fluoride Content Of Certain Waters In The Vicinity Of Albuquerque, E. Metz Beahm
A Study Of The Variation Of The Fluoride Content Of Certain Waters In The Vicinity Of Albuquerque, E. Metz Beahm
Chemical and Biological Engineering ETDs
In the first part of 1935, the City of Albuquerque was investigating the possibility of obtaining an additional water supply from the Jemez Mountains, which are about fifty miles to the north of the City. Black and Veatch, consulting engineers for the City, were asked to make a complete study of the problem. The question of fluorides in the water came up because it was known that the fluorides would cause mottled enamel in human teeth when the water was used during childhood, if the content was above 0.9 parts per million by accepted fluorine analysis methods. The question arose …
The Preparation Of 3,4-Diaminopyridine, Emil John Fencl
The Preparation Of 3,4-Diaminopyridine, Emil John Fencl
Theses
The preparation of 3,4-diamincpyridine from pyridine was investigated, but found to be of little synthetic value because of the low yield obtained on the rearrangement of 4-nitraminopyridine to 3-nitro 4-aminopyridine. In attempt to nitrate nicotinamide-N-oxide resulted in the isolation of nicotinic acid-N-oxide. Attempts to nitrate nicotinic acid-N-oxide were unsuccessful. Attempts to oxidize 3-methylpyridine-N-oxide and 4-nitro-3-methylpyridine were unsuccessful. The nitration of 3-methylpyridine-N-oxide led to the isolation of 2-nitro-5-methylpyridine, which has not previously been reported as a by-product of that reaction.
Composting Coffee Waste, Lawrence James Hickey
Composting Coffee Waste, Lawrence James Hickey
Theses
Disposal of waste, and specifically organic waste, has become a serious problem in such industries as the canning, meat-packing, dairy and other food producing industries. Recently, with the introduction of instant coffee powder, this particular industry now has a waste disposal problem with the resultant coffee residue. Composting or biologically decomposing this waste to yield an organic fertilizer is one of the many ways to solve this problem.
There are no papers in the literature concerning composting of coffee waste and only one paper (65) is available covering studies of high rate composting of garbage and refuse. It is known …
Workshops On Legal Problems Of Atomic Energy, University Of Michigan Law School
Workshops On Legal Problems Of Atomic Energy, University Of Michigan Law School
Summer Institute on International and Comparative Law
In 1952 the University of Michigan Law School, as a part of its summer session program, offered an Institute entitled "Industrial and Legal Problems of Atomic Energy. " The 1946 Atomic Energy Act, creating a virtually complete government monopoly, was then in effect, and private development of peaceful uses of atomic energy was for the most part merely a gleam in the eyes of a few forward-looking individuals. The 1952 Institute was devoted to the task of obtaining a preview of atomic affairs to come. The speakers on the program could do no more than look forward and speculate on …
A Study Of Gas Porosity In Aluminum Casting Alloys Using Radioactive Hydrogen As A Tracer, Osborne Milton
A Study Of Gas Porosity In Aluminum Casting Alloys Using Radioactive Hydrogen As A Tracer, Osborne Milton
Professional Degree Theses
"A method will be described wherein the absorption of hydrogen by aluminum is evaluated using hydrogen 3 as a tracer element. Results show that hydrogen gas is readily absorbed into the melt when it is injected directly, but is not taken on from the combustion products, that quantities of it are released when the metal freezes, and that the commonly used methods of fluxing with chlorine and nitrogen gas are of value for degassing"--Preface, page iii.
The Application Of Airphotos To Foundation Problems, Bruce Halsey Moore
The Application Of Airphotos To Foundation Problems, Bruce Halsey Moore
JTRP Technical Reports
No abstract provided.
Use Of Liquid Sulfur Trioxide As A Sulfonating Agent For Organic Compounds, Herman Gustav Weiland
Use Of Liquid Sulfur Trioxide As A Sulfonating Agent For Organic Compounds, Herman Gustav Weiland
Theses
Dodecylbenzene was sulfonated with SO3 and evaluated as to ash, sodium sulfate, degree of sulfonation, and was also compared with an oleum sulfonation. Its homolog, octadecylbenzene, was made, sulfonated, and found to be less effective as a wetting agent.
Two-ethylhexyl cinnamate, oleic acid, and propyloleate were also sulfonated with good yields and evaluated.
Yields in the sulfonation of Di-2-ethylhexyl maleate were very low. There was evidence of the SO3 splitting the ester and oxidising it to maleic acid.
The reduction of 9-octadecenophenone, according to Clemmenson's Method, led to the formation of a polymer.
38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors
38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Special Text, St 55-06-1, Transportation Intelligence, June 1954, Robert Bolin , Depositor
Special Text, St 55-06-1, Transportation Intelligence, June 1954, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
This is a textbook used at the Army Transportation School. In the 1950s, military schools related to one of the Army Technical Services were run by that service. Since the format and content of Army field manuals were often very similar to those of special texts, the same staffs often prepared both. At the time this special text was written no field manual on transportation intelligence has been issued.
The modern US Army vision of the technical intelligence developed during World War II. Shortly before World War II, Army Technical Services had been instructed to set up intelligence sections in …
A Study Of A Synthesis Of Indole, Stephen Scala
A Study Of A Synthesis Of Indole, Stephen Scala
Theses
Chemical literature abounds with methods for the synthesis of Indole and its derivatives. Undoubtedly, this is so, because Indole is the parent substance of the historical dyestuff Indigo. This coloring material has been the subject of extensive investigations for many centuries. Early in this century, importance was still placed on Indole Chemistry, but it later gore way to other dyestuffs having different chemical structures. It seems, however, the loss in popularity was to have been short-lived, because of the revitalized interest shown in the chemistry of Indoles since the early 1930's.
It was found that a great number of alkaloids …
Ultrafiltration In The Pigment Field : A Critical Literature Survey, Charles Walter Manger
Ultrafiltration In The Pigment Field : A Critical Literature Survey, Charles Walter Manger
Theses
The objective in this work has been to determine, through a critical literature survey, the possible application of ultrafiltration, and other related techniques, towards the solution of certain problems encountered in the research and testing of various pigments.
Among these problems may be mentioned the following:
- The determination of water-soluble salts in pigments, which when dispersed in water to leach out the salts, tend to peptize, thus being unfilterable through the usual filter paper. Among these pigments are the following: iron blue, certain chrome yellows, pigment green B, copper maroon, and several others. It may be added that these pigments …
Drainage Of The Logan-Hyde Park-Benson Area, Utah, Gordon H. Flammer
Drainage Of The Logan-Hyde Park-Benson Area, Utah, Gordon H. Flammer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
B.A. Etcheverry (4) in his book, Land Drainage and Flood Protection, states that inadequate drainage causes: (1) a public health menace, (2) an animal health menace, (3) lower grade plant life, (4) inadequate soil saturation, (5) lower soil temperatures, (6) shallow root penetration and, therefore, plant suffering in late summer months from effects of drought, (7) poor soil texture and workability, (8) increased surface washing and erosion of land surface, and (9) alkali and saline conditions. Other factors such as poorer roads and highways, decreased tax revenues, etc., might be added to this list. The advantages of adequate drainage …
Maintenance Of Road Surfaces, Shoulders, Ditches, And Right Of Way Areas, Dewey Sparks
Maintenance Of Road Surfaces, Shoulders, Ditches, And Right Of Way Areas, Dewey Sparks
Kentucky's Annual Forum on Transportation
No abstract provided.
The Effect Of Air-Entrainment On Concrete Containing Chert Gravel, Ali Erdogan Dinc
The Effect Of Air-Entrainment On Concrete Containing Chert Gravel, Ali Erdogan Dinc
Masters Theses
"The problem which the writer is analyzing in this paper has been suggested to him by Prof. Carlton of the Civil Engineering Department. It consists of two parts.
- 1. Bar-Run aggregate is to be obtained from Springcreek near Rolla. This material is to be screened and recombined to obtain the best gradation for highest strength concrete obtainable.
- Durability studies are to be made on the concrete resulting from best established mix by varying the amount of air entrainment compound (Vinsol Resin) to be added to the cement"--Introduction, page 1.
An Early Tertiary Stream Channel Between Fish And Pipestone Creeks, Ten Miles West Of Whitehall, Montana, Henry D. Olson
An Early Tertiary Stream Channel Between Fish And Pipestone Creeks, Ten Miles West Of Whitehall, Montana, Henry D. Olson
Bachelors Theses and Reports, 1928 - 1970
Driving between Butte, and Whitehall, Montana, on highway U.S. 10S, one observes an interesting phenomenon in the lower end of Little Pipestone Creek canyon. One side and the bottom of the canyon is cut inthe hard igneous rocks of the Boulder Batholith, and the other side of the canyon is made of unconsolidated sand, gravel, and cobbles.
An Investigation As To The Uses Of The Topographic Map And Improvements Desired By The General Public, George O. Boeckman
An Investigation As To The Uses Of The Topographic Map And Improvements Desired By The General Public, George O. Boeckman
Masters Theses
"The demand for topographic maps from hunters, fishermen, vacationers, professional engineers etc, has been increasing with each passing year. In 1940 people bought some 700,000 copies of topographic maps. In 1946 sales had jumped to well over 2,000,000 copies. Civilian use of these maps by veterans has contributed substantially to the tremendous expansion of demand for maps since World War II. In recent years, the quality of topographic maps has been greatly improved by refinements in methods and by the use of aerial photography in map compilation. This advancement, and an ever-increasing demand from engineers, geologists, and many others for …