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Articles 289501 - 289530 of 292587

Full-Text Articles in Physical Sciences and Mathematics

Heats Of Solution In Liquid Ammonia, Dorsey O. Thomas Jr. Jun 1947

Heats Of Solution In Liquid Ammonia, Dorsey O. Thomas Jr.

Honors Theses

The present work consists of measurements of the heats of solution of guanadine hydrocholride in this solvent. Also there will be presented a detailed description of the method of operation of the calorimeter which is being used.

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Methylation Of Phenols, John James Adamzevich Jun 1947

Methylation Of Phenols, John James Adamzevich

Honors Theses

Although a good deal of work has been done lately on the methylation of phenols this is still a comparatively unknown field. The purpose of this investigation was to study the effect of temperature on the amount and type of product formed.

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Solubility Determinations In Anhydrous Ethylenediamine, Joseph Hooker Dusenbury Jun 1947

Solubility Determinations In Anhydrous Ethylenediamine, Joseph Hooker Dusenbury

Honors Theses

Although the preparation of ethylenediamine is reported in the literature as early as 1853, the first isolation of the pure anhydrous compound was performed by A. W. Hoffmann in 1858. He prepared the pure diamine by repeated distillations from metallic sodium, and reported on the great stability of the 111ono-hydrate as a hindrance to obtaining the compound in a pure state, More recently, in 1934, Bailar at the University of Illinois reacted the crude diamine with zinc oxalate to give a salt which is stable at room temperature and may be heated to 200° in vacuo (all temperatures in degrees …

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The Preparation Of Phenyldibromnitromethane, Edwin L. Mincher Jun 1947

The Preparation Of Phenyldibromnitromethane, Edwin L. Mincher

Honors Theses

The purpose of this research was to prepare plenyldibromnitromethane. Also it was desired to make some physical measurements on the compound if the compound could be made in sufficient quantity. So far as the author can find out, phenyldibromnitromethane is not described in the literature.

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A Study Of The Action Of Potassium Hypobromite And Sodium Hypochlorite On Adipamide, William Marzluff Jun 1947

A Study Of The Action Of Potassium Hypobromite And Sodium Hypochlorite On Adipamide, William Marzluff

Honors Theses

The Hoffman reaction of an amide with a hypohalite to give a primary amine in excellent yields is the basis of many syntheses in organic chemistry. This project is concerned with the study of the action of sodium hypobromite and sodium hypochloride on adipamide. Isolation of reaction products, if possible, identification of reaction products, if possible, identification of the products, and determination of the yield of the reaction were desired. It was hope that a diamine, putresecine, would result from this reaction, and therefore the steps in isolation of the products were carried out with this in view.

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A Partial Study Of The Reaction Between Pentanedione-2,4 And Formaldehyde, Joseph Anthony Sincius Jun 1947

A Partial Study Of The Reaction Between Pentanedione-2,4 And Formaldehyde, Joseph Anthony Sincius

Honors Theses

It was the purpose of this research to observe the reaction of pentanedione-2,4 with formaldehyde, and to study the principle reaction product. The secondary purpose of the research was, if possible, to obtain a cyclic compound like 1,3 dihydrorescrcinol.

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Dialysis Of Silicic Acid Gels, Arthur C. Glamm Jun 1947

Dialysis Of Silicic Acid Gels, Arthur C. Glamm

Honors Theses

The primary purpose of this investigation was to prove or disprove the existence of an equilibrium between polysilicic acid molecules and simple silicic acid molecules in a set silicic acid gel. The investigation involved the controlled dialysis of typical gels from their time mixing, through the time of set and into the aging period. Since numerous silica determinations were to be made, it was thought advisable to disregard the time consuming gravimetric method. The secondary purpose of this investigation was therefore, to determine if the colorimetric method for the determination of silica, as devised by Winkler (1) in 1914 and …

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Kibbey Sandstone In Montana, Glen Shean Jun 1947

Kibbey Sandstone In Montana, Glen Shean

Bachelors Theses and Reports, 1928 - 1970

Much attention has recently been given, by geolog­ists, to prolific water bearing horizon and a potent­ial oil horizon, known as the Kibbey sandstone, which lies deeply buried under much of central Montana. In some local­ities the sandstone is dry, and its identification in cut­tings from deep wells has in many cases proved difficult.

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Rugose Corals Of The Madison Group, William R. Paine Jun 1947

Rugose Corals Of The Madison Group, William R. Paine

Bachelors Theses and Reports, 1928 - 1970

One of the best types of index fossils, and one which occurs most plentifully in the Madison group of formations in Montana, and yet, one which has been little studied, is the group of rugose, or cup, corals. Perhaps this group of fossils has not been studied in detail because their distinguishing characteristics are mainly internal, and labo­ratory preparation in the form of thin section or polished surfaces is necessary to bring out these characteristics.

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Synthesis Of Terpenes, Jeanetta Reneberger May 1947

Synthesis Of Terpenes, Jeanetta Reneberger

Chemistry Honors Papers

This 16 page thesis examines the classification and preparation of terpenes.

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The Geology And Ore Deposits Of The Ruby Gulch Mine, Henry J. Roletto, John X. Combo May 1947

The Geology And Ore Deposits Of The Ruby Gulch Mine, Henry J. Roletto, John X. Combo

Bachelors Theses and Reports, 1928 - 1970

The Ruby Gulch Mine, owned and operated by the Ruby Gulch Mining Company, Zortman, Montana, is one of the most important low-grade gold producers in the state. Sit­uated in the Little Rocky Mountains, the mine has had an interesting history since its discovery shortly before the turn of the century.

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Corrosion Testing Of Iron-Tin Alloys By The Salt Spray Method, Bernard T. Mcdonald May 1947

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.

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An Investigation Of A Particular Weldment Failure, Byron Clow May 1947

An Investigation Of A Particular Weldment Failure, Byron Clow

Bachelors Theses and Reports, 1928 - 1970

Two sets of weld-test coupons, supposedly made under identical conditions, were submitted to this institution last year for approval and certification under the A.S.M.E. Welder's Qualification Code. The first set of coupons was unsatisfactory. The second set, made by the same operators one month later, was satisfactory.

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The Corrosion Resistance Of Iron-Tin Compacts As Produced By Powder Metallurgy, Robert W. Gambill May 1947

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".

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Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken May 1947

Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken

Bachelors Theses and Reports, 1928 - 1970

The great diversity on mineral wealth in Idaho establishes it as one of the principle mining states in the union. Mining first began in the state with the discovery of placer gold in the Pierce City district in 1861, and since that date has become one of the leading industries of the state.

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Upper Cretaceous Sediment In Montana, Frank J. Frankovich May 1947

Upper Cretaceous Sediment In Montana, Frank J. Frankovich

Bachelors Theses and Reports, 1928 - 1970

Cretaceous sediments in Montana record events during a period of unusual geologic interest. After a long period of extensive submergence of the area during Jurassic time, came a period of varying continental and marine deposition with consequent variations in the types of sediments laid down. A study of these variations, their extent, and their cause has been the primary object of this thesis.

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Electro-Deposition Of Iron From A Chloride Bath, Charles W. Noon May 1947

Electro-Deposition Of Iron From A Chloride Bath, Charles W. Noon

Bachelors Theses and Reports, 1928 - 1970

Iron was electro-deposited from a ferrous chloride bath. Studies were made of deposits formed when current density was varied, and fin­ally when both current density and temperature were changed. An attempt was made to lay the ground work for a long range study of the chloride bath, and to determine the most simple conditions possible for obtaining a smooth, even, and thick deposit.

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General Geology And Mines Of Northwestern Montana, Robert L. Sandvig May 1947

General Geology And Mines Of Northwestern Montana, Robert L. Sandvig

Bachelors Theses and Reports, 1928 - 1970

The five counties discussed in this paper compose the northernmost and westernmost counties in Montana. On the eastern boundary are Glacier National Park and the Continental Divide; on the southern boundary are Missoula and Powell counties; Idaho lies on the southwestern and western side; and the Canadian border lies along the northern edge. The region is on the Pacific Ocean side of the Rocky Mountains. Three major rivers, the Clark Fork, the Flathead, and the Kootenai drain this area into the Columbia River.

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Isopach Maps And Discussion Of The Ordovician And Devonian Of Montana And Adjacent Areas, Arden F. Blair May 1947

Isopach Maps And Discussion Of The Ordovician And Devonian Of Montana And Adjacent Areas, Arden F. Blair

Bachelors Theses and Reports, 1928 - 1970

The intensive postwar search for new petroleum horizons has resulted in widespread prospecting in the northern Great Plains. No commercial production has as yet been derived from Ordovician or Devonian rocks in Montana, but the relat­ively few tests that have penetrated to critical depths have disclosed encouraging conditions which merit further consider­ation, especially in Devonian strata.

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Occurrence Of Native Copper Near Jefferson City, Montana, Terence G. Kirkland May 1947

Occurrence Of Native Copper Near Jefferson City, Montana, Terence G. Kirkland

Bachelors Theses and Reports, 1928 - 1970

Sometime prior to 1870, a group of prospectors made what was believed to be a "rich strike' on one of the tributaries of Prickly Pear Creek in Jefferson County, Montana. Instead of striking it rich, they had uncovered a native copper deposit, worthless to them because of its limited extent and remote location, but now of much interest to the geologist, and to the mining engineer because of its possible commercial value.

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The Problem Of The Tensleep Sandstone, George D. Mccarthy May 1947

The Problem Of The Tensleep Sandstone, George D. Mccarthy

Bachelors Theses and Reports, 1928 - 1970

Sandstone is probably one of the most important groups of rocks in existence today. The economic importance of so insignifi­cant a thing as a mass of sand grains grows with the true reality of the situation. By increasing our knowledge of grains of sand, or particles of sandstone in all their ram­ifications, it would undoubtedly reflect upon our everyday life by increasing commercial possibilities of an undevel­oped natural resource of Montana.

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The Anodic Polishing Of Copper In Solutions Of Orthophosphoric Acid, Robert E. Sullivan May 1947

The Anodic Polishing Of Copper In Solutions Of Orthophosphoric Acid, Robert E. Sullivan

Bachelors Theses and Reports, 1928 - 1970

The electrolytic cleaning of metals by anodic methods has been known for many years. It was recognized long ago that when the temperature and concentration of the electro­lyte were properly regulated, bright clean surfaces were obtained.

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Experiments On The Keto-Cleavage Of D1 (2-Cyanoethyl) Acetoacetic Ester, Charles W. Huff May 1947

Experiments On The Keto-Cleavage Of D1 (2-Cyanoethyl) Acetoacetic Ester, Charles W. Huff

Chemistry Honors Papers

This 12 page thesis examines effects of the addition of acrylo-nitrile to acetoacetic ester.

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A Preliminary Investigation Of Chromite, Lester C. Brown May 1947

A Preliminary Investigation Of Chromite, Lester C. Brown

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis was to study the effects of cryolite and a mixture of cryolite and aluminum oxide on a chromite concentrate with special reference to the ability to break the bond between the ferrous iron and chromic oxide in the chromite.

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Glaciation In Montana, Alvin H. Lense May 1947

Glaciation In Montana, Alvin H. Lense

Bachelors Theses and Reports, 1928 - 1970

Glacial deposits are increasingly entering into consideration in engineering projects, soil surveys, ground-water supply, sources for industrial materials, and other economic enterprises. In the field of en­gineering, glacial deposits if present must be consider­ed in connection with reservoir sites, dam or bridge abutments, road building, and other types of construction work.

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Distribution And Lithology Of Sedimentary Rocks In Montana And Adjacent Areas, Harold Kentta May 1947

Distribution And Lithology Of Sedimentary Rocks In Montana And Adjacent Areas, Harold Kentta

Bachelors Theses and Reports, 1928 - 1970

The general features of the sedimentary rocks in a region, their distribution, and the relationships of these rocks to other rocks of the area and of adjacent areas, are some of the things in which most geologists are interested, for reasons of general curiosity or for obtaining a better understanding of their specific prob­lems

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Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom May 1947

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.

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Abstract Papers Apr 1947

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

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Thermal Conductivity Of Air Layers, Zaboj V. Harvalik Apr 1947

Thermal Conductivity Of Air Layers, Zaboj V. Harvalik

Journal of the Minnesota Academy of Science

No abstract provided.

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Abstract Papers Apr 1947

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

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