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Articles 192871 - 192900 of 194780
Full-Text Articles in Engineering
Geology Of The Lost Creek-Modesty Creek Area Deerlodge County, Montana, Howard B. Nickelson, Robert L. Pott
Geology Of The Lost Creek-Modesty Creek Area Deerlodge County, Montana, Howard B. Nickelson, Robert L. Pott
Bachelors Theses and Reports, 1928 - 1970
In 1915 the United States Geological Survey published a folio by Calkins and Emmons on the geology of the Philipsburg Quadrangle, which adjoins the area now under study to the west. Geology of this portion of Montana had not been mapped previously; consequently the purpose of this thesis is to make a geological reconnaissance of the stratigraphy and structure of the area.
A Study Of The Action Of Various Energizers In The Carburization Of Steel, William N. Warren
A Study Of The Action Of Various Energizers In The Carburization Of Steel, William N. Warren
Bachelors Theses and Reports, 1928 - 1970
The object of casehardening is to produce articles of steel having a tough or ductile interior and a hard surface. Quenching produces a surface somewhat harder than the interior, but in order to obtain a high surface hardness, the percentage of alloying elements in the steel must be raised to such an extent that the core or central portion becomes hard and brittle also.
A Study Of The Diffusion Of Electroplated Coatings In The Solid State., Michael R. Writt
A Study Of The Diffusion Of Electroplated Coatings In The Solid State., Michael R. Writt
Bachelors Theses and Reports, 1928 - 1970
The term diffusion means an equalization or homogenization of diverse materials. Specifically applied to metals, diffusion is the interchange of atoms. It is, in effect, an invasion of one crystal lattice by the atoms of one or more other crystal lattices. Therefore, the study of diffusion must involve the geometry and physics of crystal lattices as well as their energies.
Leaching Of Low Grade Rhodochrosite, E. D. King
Leaching Of Low Grade Rhodochrosite, E. D. King
Bachelors Theses and Reports, 1928 - 1970
Although there are many uses for manganese today, none of them approaches its importance as a deoxidizing agent in the manufacture of steels. Without manganese the steelmaking industry would be very seriously handicapped. The metallurgy of manganese has been developed around the high-grade ores, and unfortunately, our reserves of high-grade ores are very limited.
Geology And Ore Deposits Of The Salt Chuck-Rush And Brown Mine Area Prince Of Wales Island, Alaska, Judson H. Whitman
Geology And Ore Deposits Of The Salt Chuck-Rush And Brown Mine Area Prince Of Wales Island, Alaska, Judson H. Whitman
Bachelors Theses and Reports, 1928 - 1970
The Salt Chuck, Rush and Brown, and adjacent mines and claims form an area of approximately 15 square miles near the head of Kasaan Bay about 10 miles northwest of the village of Kasaan on Prince of Wales Island in southeastern Alaska. It is an area of moderate relief in which the hills rise from the water’s edge to heights of some 500 feet. Most of the area is covered with dense vegetation and muskeg.
The Drainage Problem In The Lewiston Area, Utah, Sterling Davis
The Drainage Problem In The Lewiston Area, Utah, Sterling Davis
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Often where water is artificially applied to land, means must be provided for removal of some of this water. Too much water is just as bad as too little. The increased use of irrigation water in Utah has caused an increased need for drainage. Some irrigated lands are poorly drained. With high water table, yield of crops has been materially decreased, and with present drainage methods only a part of possible production had been attained.
A Study Of The Physical Properties Of Low Tin Solders, Cornelius P. Dwyer
A Study Of The Physical Properties Of Low Tin Solders, Cornelius P. Dwyer
Bachelors Theses and Reports, 1928 - 1970
In 1947, out of the 100,000 long tons of tin consumed in the United States, 25,000 tons went into solder. Tin plate took 39,000 tons while babbit, bronze and collapsible tubes accounted for approximately 17,000 tons. Solder ranked second to tin plate and required more than the next three major uses combined.
The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen
The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen
Bachelors Theses and Reports, 1928 - 1970
During recent years, duralumin and all aluminum alloys have been made the object of much discussion regarding their hardening mechanism. The commercial success of nearly all of the alloys of aluminum and magnesium is dependent on their ability to age or precipitation harden.
An Investigation Of The Anodic Oxidation Of Aluminum In A Sulfuric Acid Electrolyte, William D. Michaely
An Investigation Of The Anodic Oxidation Of Aluminum In A Sulfuric Acid Electrolyte, William D. Michaely
Bachelors Theses and Reports, 1928 - 1970
When aluminum is allowed to stand in air or is heated in air, a thin oxide film is produced on the metal. If aluminum is made the anode in a suitable electrolyte and a current applied, a coating is obtained which is similar to that produced in air, but may be effected much quicker. This film is thicker, harder, more resistant to corrosion and abrasion, and more adhesive than the natural oxide. The film is porous and makes an excellent adsorptive for dyes and pigments.
Oxygen Enriched Atmosphere Roasting, Clarence Wells Jr
Oxygen Enriched Atmosphere Roasting, Clarence Wells Jr
Bachelors Theses and Reports, 1928 - 1970
The possible benefits of oxygen enriched atmosphere roasting have been known to metallurgists for many years, but only since the development of equipment and processes to produce cheap oxygen in very large amounts has much serious consideration been given this matter.
An Investigation Of Age-Hardening In A Commercial Copper-Beryllium Alloy, Terry Horne
An Investigation Of Age-Hardening In A Commercial Copper-Beryllium Alloy, Terry Horne
Bachelors Theses and Reports, 1928 - 1970
This investigation is concerned with the age-hardening process as exemplified by the aging of a commercial Cu-Be alloy and, in particular, with this process as determined by X-ray methods. The amount of information available on age-hardening of commercial alloys is scanty and what information there is, is inaccurate.
The Electrodeposition Of Iron-Manganese Alloys, Kenneth H. Larson
The Electrodeposition Of Iron-Manganese Alloys, Kenneth H. Larson
Bachelors Theses and Reports, 1928 - 1970
Although the alteration of properties resulting from the alloying of metals in their usual commercial forms has been extensively investigated, the field of electrodeposition of alloys is believed generally not to have received the attention that it merits.
A Preliminary Study Of The Benefication Of Montana Kyanite, Donald Paul Mccarthy
A Preliminary Study Of The Benefication Of Montana Kyanite, Donald Paul Mccarthy
Bachelors Theses and Reports, 1928 - 1970
This investigation is a preliminary study of the beneficiation of Montana kyanite, and while preliminary in degree the information gained may serve as a guide for the eventual exploitation of this Montana resource.
Foraminifera From Pleistocene Beds Near San Pedro, California, R. F. Mitchell
Foraminifera From Pleistocene Beds Near San Pedro, California, R. F. Mitchell
Bachelors Theses and Reports, 1928 - 1970
The age of rocks found in drill cores, and consequently the depths to possible oil-bearing formations has in many localities been determined by micro-paleontologic studies during the past three decades. Of the different micro-fossils used in this work, foraminifera have been studied most, are the best described, and hence, by far the most helpful.
Excerpts From: A Study Of The Relationship Between Subgrade California Bearing Ratios And Pumping Of Rigid Pavements, Robert F. Baker
Excerpts From: A Study Of The Relationship Between Subgrade California Bearing Ratios And Pumping Of Rigid Pavements, Robert F. Baker
Kentucky Transportation Center Research Report
No abstract provided.
Geology Of Upper Bear Gulch And Dry Boulder Creek Area Madison County, Montana, Norman King
Geology Of Upper Bear Gulch And Dry Boulder Creek Area Madison County, Montana, Norman King
Bachelors Theses and Reports, 1928 - 1970
Potential gold mines lie high among the rugged peaks of the Tobacco Root Mountains of southwestern Montana. This is a region where little geologic work has been done, though extensive mine operations have been carried on, and valuable ore has been shipped.
Accelerated Curing Of Superphosphate Fertilizer., Gus W. Leep
Accelerated Curing Of Superphosphate Fertilizer., Gus W. Leep
Electronic Theses and Dissertations
Simultaneous drying of curing superphospate is shown to be of definite value in increasing the available P2O5 content. Raw superphosphate heated to 80 degrees C., and analysed after 1 hour, 4 hours, 24 hours, and 48 hours of curing contained 16.92%, 19.67%, 20.66%, and 20.78% of available P2O5 respectively. For the same periods of time samples cured at room temperature contained 15.28%, 17.1%, 17.7%, and 18.82% of available P2O5. There was a larger amount of P2O5 available after 4 hours heating than after 48 hours at room temperature. This increase represented a 12:1 time-ratio in favor of the heated sample. …
An Inexpensive Method For Obtaining Heat Transfer Coefficients Of Southwest Building Material, Roy Elsworth Burris
An Inexpensive Method For Obtaining Heat Transfer Coefficients Of Southwest Building Material, Roy Elsworth Burris
Mechanical Engineering ETDs
The need for establishing heat transfer coefficients of all types of building materials is well known among heating engineers. Much work has been done on this subject; but as types of building material vary in different sections of the country and standard materials will vary according to the type of raw material and method of manufacture, actual conductivity texts have been performed upon only a portion of the materials now in use.
Standardization Of No-Passing Zone Pavement Markings, Glen Nickolas Hackmann
Standardization Of No-Passing Zone Pavement Markings, Glen Nickolas Hackmann
Professional Degree Theses
"This thesis is a comprehensive treatment of present methods practiced by the various Highway Departments in the United States. It presents in particular current methods used by the State Highway Departments and the Public Roads Administration in marking no-passing zones throughout the country. For a long time it has seemed to the author that such a study was needed by both students and highway engineers. Road-design information of great value has developed over the years and often has been published but never assembled in a single orderly presentation stripped of excessive overlapping"--Preface, page ii.
A Study Of The Retort Zinc Distillation Process, Albert Hoffman
A Study Of The Retort Zinc Distillation Process, Albert Hoffman
Masters Theses
"The problem of this thesis is to determine the optimum density of packing of the charge to a zinc retort under exact industrial conditions of temperatures and materials as it affects the production of zinc metal. It is well known that the quantity of zinc produced per cycle is benefited by increasing the density of charging, but increased density of packing or charging is limited by the diffusion, through the charge of the gases necessary to carry on the reduction reactions. In commercial practice there is also a secondary limitation dependent primarily upon the rate at which the heat can …
The Design, Construction, And Testing Of A Heat Exchanger For Determining Heat Transfer Coefficients For Liquids In Forced Convection Normal To Banks Of Staggered Tubes, Kenneth Edwin Rudert
The Design, Construction, And Testing Of A Heat Exchanger For Determining Heat Transfer Coefficients For Liquids In Forced Convection Normal To Banks Of Staggered Tubes, Kenneth Edwin Rudert
Masters Theses
"Many studies of heat transmission have been carried out on various kinds of heat exchangers. Film coefficients have been determined and the data correlated by equations. In particular, film coefficients have been obtained for gases in turbulent flow normal to both a single cylinder and banks of staggered tubes. Very little data has been published on liquid film coefficients for flow at right angles, or normal to banks of staggered tubes...It is the purpose of this paper to present the results obtained from tests made on an originally designed heat exchanger built in the laboratory. The exchanger is a non-baffled …
Cigarette Resistant Finish : Ii. Glue Applicator Design : Iii. Preliminary Study Of Rubber-Phenol Co-Polymers, Glenn T. Martin 1922-1984
Cigarette Resistant Finish : Ii. Glue Applicator Design : Iii. Preliminary Study Of Rubber-Phenol Co-Polymers, Glenn T. Martin 1922-1984
Electronic Theses and Dissertations
No abstract provided.
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.
Design Of A Radio Broadcasting Station, John William Hamman
Design Of A Radio Broadcasting Station, John William Hamman
Masters Theses
"In the design of any piece of equipment, before any work whatsoever is done, a reason for developing the object must be apparent to all concerned. Any expenditure of time, labor and money must be properly justified before action can be taken. In the case of this paper, then, the reason for designing a broadcast radio station for the Missouri School of Mines & Metallurgy at Rolla, Missouri is twofold: First, to provide an additional instrument whereby instruction may be given to students interested in the study of radio; second, to supply the residents of Rolla and vicinity with entertainment …
Graphical Cost Analysis, Pranlal Girdharlal Sheth
Graphical Cost Analysis, Pranlal Girdharlal Sheth
Masters Theses
"This study made in the present work is an attempt to use the graphical methods to analyse the various cost functions of mineral production, viz., cost of labor, and materials (explosives, supplies, etc.) and to investigate their behavior with regard to the production of ore. Graphs and charts show, in a pictorial way, the relative magnitudes of changes in the factors of production that take place with the process of time. Besides being a visual comparison of the various series plotted, the graph develops and build analytical thinking and permits one to obtain the proper perspective. Today, engineers, in constantly …
Studies Of Contact Angles On Oxidized Copper Minerals, John Stewart Carr
Studies Of Contact Angles On Oxidized Copper Minerals, John Stewart Carr
Masters Theses
"Effective flotation of an ore is the result of several factors: selection of suitable reagents; the proper combination of reagents, processing conditions of the operation proper such as time intervals involved and the machinery used. To focus the investigation on a specific field it was decided to investigate in some detail the behaviour of the more popular collectors toward oxidized copper minerals. This investigation was carried out chiefly by applying contact-angle measurements as obtained with the various collectors on the basic carbonate and oxide copper minerals. This basic information was desirable before carrying out actual flotation tests. There was little …
Geology 63: Geological Report Of Senior Field Trip, Thomas L. Wilson
Geology 63: Geological Report Of Senior Field Trip, Thomas L. Wilson
Bachelors Theses and Reports, 1928 - 1970
The field work was conducted in areas adjacent to Whitehall, Montana, as has been the custom for the past several years. Instruction in the proper use of the telescopic and open sight alidades, and the Brunton compass for surveying geologic features was given. Advantages of pacing and speedometer mapping were pointed out and used.
Investigation Of The Stress-Strain Of American Standard Or National Course Bolts, Clare Jackson Thorpe
Investigation Of The Stress-Strain Of American Standard Or National Course Bolts, Clare Jackson Thorpe
Masters Theses
"The purpose of this investigation is to determine, if possible, a formula for the initial tensile load that will consider the Nominal Diameter of the bolt and the yield point of the material from which the bolt is manufactured; to determine, if possible, a torque stress relation, when tightening the bolt"--Preface, page iii.
A Geological Report On South Boulder Canyon And The Mayflower Mine-Renova Areas, B. R. Alto
A Geological Report On South Boulder Canyon And The Mayflower Mine-Renova Areas, B. R. Alto
Bachelors Theses and Reports, 1928 - 1970
The purpose of this report is to serve as a written explanation of the accompanying geologic maps and columnar section. Each year the senior students in mining and geological engineering at the Montana School of Mines spend two weeks in the field where they learn the fundamentals of geologic mapping and related field studies. An additional week is spent at the school where maps are assembled, prints made, end other work is done in preparation for the writing of the report.