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Articles 32911 - 32940 of 32948
Full-Text Articles in Entire DC Network
Plywood Adhesive Development., Jesse R. Goza 1922-2013
Plywood Adhesive Development., Jesse R. Goza 1922-2013
Electronic Theses and Dissertations
No abstract provided.
Fiberboard From Wood Chips : Ii. Diffusion Of Water Through Glue Lines In White Oak Veneer : Iii. Factors Affecting Plate Efficiency Of Bubble Cap Distillation Columns., Dwight L. Mckay 1924-2012
Fiberboard From Wood Chips : Ii. Diffusion Of Water Through Glue Lines In White Oak Veneer : Iii. Factors Affecting Plate Efficiency Of Bubble Cap Distillation Columns., Dwight L. Mckay 1924-2012
Electronic Theses and Dissertations
No abstract provided.
The Application Of The Membrane Analogy To The Solution Of Heat Conduction Problems, Lloyd Hines Wilson
The Application Of The Membrane Analogy To The Solution Of Heat Conduction Problems, Lloyd Hines Wilson
Masters Theses
"The purpose of this investigation is to determine the feasibility of applying the membrane analogy to the solution of two-dimensional heat conduction problems. This investigation will deal only with heat conduction in the steady state through homogeneous media"--Preface, page iii.
Corrosion Testing Of Iron-Tin Alloys By The Salt Spray Method, Bernard T. Mcdonald
Corrosion Testing Of Iron-Tin Alloys By The Salt Spray Method, Bernard T. Mcdonald
Bachelors Theses and Reports, 1928 - 1970
The purpose of this study was to determine the relative rate of corrosion of iron-tin alloys containing low percentages of tin. Since in the world today, a great deal of work is being done to develop large tin deposits and new methods devised to treat these ores, it is possible that the metal will become abundant and will obtain a more important position in the metal industry.
The Corrosion Resistance Of Iron-Tin Compacts As Produced By Powder Metallurgy, Robert W. Gambill
The Corrosion Resistance Of Iron-Tin Compacts As Produced By Powder Metallurgy, Robert W. Gambill
Bachelors Theses and Reports, 1928 - 1970
The art of Powder Metallurgy deals with the preparation of metal powders and their utilization. As a more pertinent definition, the following has been suggested: "Powder Metallurgy is the art of producing metal powders and shaped objects from individual, mixed, or alloyed metal powders, with or without the inclusion of non-metallic constituents".
Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom
Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom
Bachelors Theses and Reports, 1928 - 1970
A deposit of kyanite, an aluminum silicate mineral used in the ceramic industry, occurs in the low foothills of the Gravelly range about 10 miles south of Ennis, Montana. This study deals primarily with the character and origin of the deposit, and its relationship to the surrounding rocks.
Laboratory Model Shaking Table; An Investigation Of Defects And Suggested Improvements, George C. Horak
Laboratory Model Shaking Table; An Investigation Of Defects And Suggested Improvements, George C. Horak
Bachelors Theses and Reports, 1928 - 1970
The laboratory model is considered in this thesis. Information gained from this investigation has not been transferred to the larger industrial machines. Some of the factors noted concerning the efficiency of the laboratory shaking table are inherent in this small scale model only.
The Effect Of Temperature On Mine Rocks, James Wilson Snider
The Effect Of Temperature On Mine Rocks, James Wilson Snider
Masters Theses
"The problem of this investigation involves the determination of the coefficients of thermal expansion of mine rocks, and the relationship of porosity, permeability, and consecutive temperature changes to the permanent elongation of those rocks. One of the major problems in mining today is that of the analysis of the action of exposed mine rock under changes of temperature. The immediate cause of a fall of ground in a mining excavation is due to the fact that some part of the mass that falls has been subjected to a stress beyond the strength of the rock. The question arises as to …
Further Studies On The Effect Of Grinding Aids For Portland Cement Clinker, Charles Lee Rakestraw
Further Studies On The Effect Of Grinding Aids For Portland Cement Clinker, Charles Lee Rakestraw
Masters Theses
"In the dry grinding of cement clinker to a fine powder in which for example ninety percent or more of the particles are reduced to a fineness below that of a 200 mesh screen, it has been found that further fine grinding is extremely difficult and the energy input is out of all proportion to the further production of fine particles. This seems to be due to the fact that when the bulk of the material reaches this fineness there is a tendency of the finest particles to cling to each other and bunch or flocculate. Along with this tendency …
The Preparation Of Elementary Fluorine And Its Reactions With Certain Organic Compounds, Robert Knox Neuman
The Preparation Of Elementary Fluorine And Its Reactions With Certain Organic Compounds, Robert Knox Neuman
Masters Theses
"This work had two main objectives: (1) The construction of an electrolytic cell for the production of fluorine, (2) the preparation of some organic compounds containing fluorine. This research was undertaken because of the growing importance of fluorine chemistry, particularly in the field or organic chemistry. Due to the extreme activity of fluorine, it is theoretically possible to prepare many times more fluorine-containing organic compounds than there are known organic compounds today. It has been predicted that fluorine-containing products will be developed to include new and useful dyes, plastics, pharmaceuticals, lubricants, tanning agents, metal fluxes, fumigants, insecticides, germicides, fire extinguishers, …
Permability And Porosity Of Devonian Dolomites In Northwestern Montana, Jack W. Nordquist
Permability And Porosity Of Devonian Dolomites In Northwestern Montana, Jack W. Nordquist
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation is to record data pertaining to porosity and permeability derived from physical tests performed on Devonian dolomites occurring in northwestern Montana, and to subsequently summarize the results obtained as an aid in determining the possibility of those dolomites being suitable reservoir rocks for oil and gas accumulation.
Methods Of Determining Porosity And Spatter Losses Of Arc Welds, Campbell W. F. Funk
Methods Of Determining Porosity And Spatter Losses Of Arc Welds, Campbell W. F. Funk
Bachelors Theses and Reports, 1928 - 1970
The original objective of this project was to determine the effect of varying current intensity and electrode coating composition upon the spatter losses and porosity of arc welds made by alternating current. This subject was suggested by the Welding Research Council of the Engineering Foundation, which is a clearing house for welding research in order to avoid duplication of work.
Drainage As A Factor In The Development And Operation Of A Mine, Peter Paul Ribotto
Drainage As A Factor In The Development And Operation Of A Mine, Peter Paul Ribotto
Professional Degree Theses
"Peele's "Mining Engineers' Handbook" lists six of the more vital factors influencing the method of development and operation of a mine. These are (1) topography, (2) local geology, (3) location and mining of oreshoots, (4) haulage problems, (5) drainage, and (6) ventilation and safety. The purpose of this thesis is to provide a scheme for studying the drainage factor and to show how much a scheme works out in actual practice. Even the casual observer will note the interdependence and interrelationship among the factors listed. So closely tied together are they that the reasonable discussion of an item such as …
An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson
An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation was to attempt to find some means of increasing the effective porosity and permeability of the producing sands of the Cut Bank Oil Field, with the hope that thereby the ultimate recovery of petroleum from this field may be increased. Although the percentage increase in production thus effected would undoubtedly be small, it would represent a substantial volume of petroleum in view of the great quantity of oil and gas present in this field.
Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis
Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis
Bachelors Theses and Reports, 1928 - 1970
In studying the Cut Bank field and its numerous wells, it is found that dry holes are surrounded by producing wells, and also that the field as a whole is very irregular; water, oil, and gas zones in many cases following no definite pattern. In some instances, this phenomenon may be due to the lensing and thinning of the producing sands, but it is evident that this is not the only factor. Therefore, the controlling factors must be porosity and permeability.
A Study Of The Pollution Of The Meramec River, William Quentin Kehr
A Study Of The Pollution Of The Meramec River, William Quentin Kehr
Professional Degree Theses
"Early in 1940 a project was undertaken for a complete survey of the Meramec River Basin. This project, of which the pollution study was a part, was one of the most extensive surveys made of an entire river basin and included detailed studies of soil erosion, land, use, pollution, rainfall, and recreation in the Meramec Basin. The pollution study covered that portion of the Meramec River from its confluence with the Mississippi River to Steelville, a distance of about 140 river miles; the Big River from its mouth to a point west of Flat River, a distance of 107 river …
Polishing Mineral Specimens By The Use Of An Optical Polishing Machine, Wilbur J. Guay
Polishing Mineral Specimens By The Use Of An Optical Polishing Machine, Wilbur J. Guay
Bachelors Theses and Reports, 1928 - 1970
The problem in this investigation was to determine if mineral specimens mounted in bakelite, or lucite, could be polished for microscopic examination by the use of an optical polishing machine, and if this method would cut down the length of time required to polish specimens by the methods now in use.
A Study Of The Concentration Of A Low-Grade Manganese Ore From The Ennis District, John B. Schuettenhelm
A Study Of The Concentration Of A Low-Grade Manganese Ore From The Ennis District, John B. Schuettenhelm
Bachelors Theses and Reports, 1928 - 1970
The purpose of the investigation was to determine the most effective means of concentrating the manganese in the ore. The study was that of identification of the minerals present. This showed the presence of oxides of manganese and iron, and carbonates of calcium and manganese. Methods of investigation were planned to determined whether the ore could be concentrated effectively by gravity concentration methods.
A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd
A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd
Bachelors Theses and Reports, 1928 - 1970
The ore under investigation in this thesis is a copper-zinc ore which came from the state of New Mexico. The exact location is unobtainable. The purpose of the investigation was to determine the most effective means of concentration of the valuable minerals present in the ore.
The Application Of Fluid Level Measurements To Oil Wells In Kansas, Charles Calvert Rodd
The Application Of Fluid Level Measurements To Oil Wells In Kansas, Charles Calvert Rodd
Professional Degree Theses
"The mechanics of determining fluid levels and a knowledge of the depth-to-fluid in a well are matters of general interest. To the oil-producer, however, such information is of value only as it may affect the operation of a well or reservoir"--Uses of Fluid-Level Measurements, page 9.
A Study Of Opacity Produced By Insoluble Refractory Opacifiers, Theodore J. Planje
A Study Of Opacity Produced By Insoluble Refractory Opacifiers, Theodore J. Planje
Bachelors Theses
"To investigate opacification produced by insoluble, refractory opacifiers in an effort to obtain some knowledge and reliable data concerning the electrical charge on the particles - its quality and quantity, and the effect of heavy metallic ions upon the flocculation and deflocculation of the opacifying particles"--Object, page 1.
Absorption Of Carbon Dioxide In A Bubble Plate Tower, William Arthur Enderson
Absorption Of Carbon Dioxide In A Bubble Plate Tower, William Arthur Enderson
Masters Theses
"Gas absorption, one of the chief operations of chemical engineering, has occupied investigators for a long time. Results of many experiments on the general subject of gas absorption has been published. However, relatively few data have appeared in the literature on the use of bubble cap towers for gas absorption although they constitute one of the three major classifications of absorption equipment. Bubble cap towers are used extensively in the petroleum industry. More performance data would increase the versatility of existing equipment"--Introduction, page 1.
The Effect Of Addition Agents In Grinding Portland Cement Clinker, Eugene Farrell Hill
The Effect Of Addition Agents In Grinding Portland Cement Clinker, Eugene Farrell Hill
Masters Theses
"In the dry grinding of most materials in a ball mill or similar apparatus, a degree of fineness is eventually reached when a noticeable decrease in the efficiency of grinding occurs. The degree of fineness where this phenomenon occurs, as measured by the specific surface of the material being ground, varies greatly with different materials. The accompanying effect in all cases, however, is the formation of a coating upon the balls; this coating in the case of cement adheres tightly to the balls and increases in thickness as grinding progresses after the initial "coating' fineness has been reached. Usually an …
Organic Ion-Exchange Materials, Harry Burrell
Organic Ion-Exchange Materials, Harry Burrell
Theses
This thesis is offered as partial fulfilment for the degree of Chemical Engineer at the Newark College of Engineering. It covers a very new subject - one which has been rather intensively developed by several investigators during the past three years. The writer has had the fortunate opportunity of working on organic ion-exchange materials at the Ellis-Foster Co., which kindly gave permission through Mr. Carleton Ellis for the publication of experimental results. Many thanks are due to Dr. Frank B. Root, the laboratory director, whose gracious, constructive criticisms aided the writer in all phases of the work.
An attempt has …
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Bachelors Theses and Reports, 1928 - 1970
A microscopic investigation of the Montana silver minerals was conducted. This study consisted mainly of identifying the silver and silver-bearing minerals and of determining their paragenetic relationships. The increasing amount of research in which the reflecting microscope is employed is evidence of the great value of this method of approach in the solution of problems of paragenesis of the opaque minerals.
Problems In The Cement Industry, William Alonzo Mccanless
Problems In The Cement Industry, William Alonzo Mccanless
Professional Degree Theses
"The major problem of the cement companies is the matter of marketing the product in sufficient quantities and at a price which will return a profit; however, there are some other problems that are of great interest to the engineers, i.e., the interest in the economics of cement based largely on its effect on the cost of contemplated structures"--page 1.
La MineríA En El Peru (Sinopsis Para El Año De 1929), Felipe B. Oré
La MineríA En El Peru (Sinopsis Para El Año De 1929), Felipe B. Oré
Professional Degree Theses
No abstract provided.
Sewage Disposal Improvements At Pontiac, Michigan, Robert William Abbett
Sewage Disposal Improvements At Pontiac, Michigan, Robert William Abbett
Professional Degree Theses
"The existing East Boulevard Sewage Disposal Plant consists of a set of bar screens, a grit chamber, a battery of three Imhoff tanks, eight trickling filter units, of the rotary-distributor type, and three secondary settling tanks. The plant was designed for a population of 52,500 in 1919 by Clarence W. Hubbell, Consulting Engineer. At the present time the plant shows evidence of loading beyond its capacity, the distress of the Imhoff tanks being particularly acute"--Present Sewage Disposal Facilities, page 5.
Investigations Of Diversion On The Lower Mississippi River, Elmer John Sperling
Investigations Of Diversion On The Lower Mississippi River, Elmer John Sperling
Masters Theses
"The purposes of this investigation were severally as follows: (a) To determine the feasibility of digging pilot channels to scour out channels through the Beouf and Atchafalaya basins of sufficient size to handle the project flows contemplated for these basins in time of superflood. (b) To determine the best forms of the pilot channels and the best approximate dimensions. (c) To determine velocities conducive to erosion, transportation, and deposition; the manner and rate of enlargement under below-bank, bankful, and overbank flows; and the character of trace to be expected after enlargement of the proposed channels. (d) To investigate any suggested …
A Few Notes From The Sanitary Engineering Field, Ronald Davies Ward
A Few Notes From The Sanitary Engineering Field, Ronald Davies Ward
Professional Degree Theses
"This paper, it is felt, may appear to be a somewhat disconnected discussion of a few points that have come to the writer's attention from his limited experience and practice in the field of Sanitary Engineering. It has not been the intention, however, to provide a discussion of continuity which would take the reader from the ground up through the process involved in the design and construction of any particular structure, system, or plant; but rather is it to be considered the writer's attempt - although probably a somewhat feeble one - to set forth in a note-book, as it …