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Articles 69001 - 69030 of 69073
Full-Text Articles in Physical Sciences and Mathematics
Characteristics Of Bacillus Influenzae, Georgena Josephine Clarke
Characteristics Of Bacillus Influenzae, Georgena Josephine Clarke
Masters Theses
"This organism is classed under the type of haemoglobinophilic bacteria, due to the fact that its growth is restricted to a special medium containing haemoglibin [sic]. It is a very small bacillus which in the sputum tends to show itself in aggregations, especially centering about other organisms, M. tetragenus in particular"--page 3.
Glucose From Corn Cobs, Barney Nudelman
Glucose From Corn Cobs, Barney Nudelman
Masters Theses
"The efforts of American chemists in recent years have been devoted largely to the utilization of our waste products...Corn cobs offer a particularly inviting field for research along this line on account of the large supply of cobs available and the variety of substances obtainable from them. One of the leaders in this branch of investigation is Dr. F. B. LaForge of the Chemistry Division of the Bureau of Agriculture, who has contributed numerous papers on the subject. In one of these, in collaboration with C. S. Hudson, he describes, among other things, the preparation of glucose, but recognizes the …
Quantitative Analysis (Gravimetric), L. Arthur Walton
Quantitative Analysis (Gravimetric), L. Arthur Walton
Chemistry Honors Papers
This 24 page thesis examines the determination of various compounds using gravimetric analyses.
Volumetric Chemical Analysis, Beatrice Brooks
Volumetric Chemical Analysis, Beatrice Brooks
Chemistry Honors Papers
This 20 page thesis illustrates various methods of volumetric processes.
Methyl Amines From Carbinol And Ammonium Chloride, Arthur Mark Howald
Methyl Amines From Carbinol And Ammonium Chloride, Arthur Mark Howald
Masters Theses
"During the spring of 1919 we undertook to prepare tri-methyl-amine for the Research Department of the Eastman Kodak Company in the Industrial Chemistry Laboratory of the Missouri School of Minds. According to V. Merz and K. Gasiorowski the three methyl amines were qualitatively proven to be present in the reaction products obtained by heating methyl alcohol, ammonia and zinc chloride to 220°C. in a bomb for fourteen hours. As these raw materials are inexpensive we attempted to prepare the tri-methyl-amine by this reaction employing for the purpose a small industrial autoclave. Methyl amines were obtained by the yield especially of …
The Chemistry Of Nitrogenous Food Stuffs, Emma M. Schweigert
The Chemistry Of Nitrogenous Food Stuffs, Emma M. Schweigert
Chemistry Honors Papers
This 18 page thesis contains analyses of various nitrogenous foods.
Non-Nitrogenous Foods, Edna M. Boyd
Non-Nitrogenous Foods, Edna M. Boyd
Chemistry Honors Papers
This eight page thesis discusses the chemical compositions of various non-nitrogenous foods.
The Chemistry Of Selected Food Stuffs And Condiments, Leslie F. Rutledge
The Chemistry Of Selected Food Stuffs And Condiments, Leslie F. Rutledge
Chemistry Honors Papers
This 17 page thesis discusses the composition of various foods, including milk, butter, bread and wine.
The Cost Of Producing Electricity At The Hamilton, Missouri Light And Power Company, Bernerd William Adams
The Cost Of Producing Electricity At The Hamilton, Missouri Light And Power Company, Bernerd William Adams
Bachelors Theses
"For those seeking information on the cost of producing electricity in steam plants, an unlimited amount of data may be found in the technical journals and text books. This information, however, is obtained from a careful analysis of the daily and hourly records kept by the largest central stations, hence, production costs are available only where the yearly out-put is several million kilowatt-hours. the small isolated stations of from one hundred to two hundred kilowatt capacity have not as a rule, become progressive enough to keep a complete record of operating costs...The test hereinafter reported was conducted from August 3rd. …
Leaching Flue Dust, Edwin Alexander Kayser
Leaching Flue Dust, Edwin Alexander Kayser
Bachelors Theses
"The usual method of treatment has been to charge the "flue dust" into reverberatories and smelt it with the regular charge of calcined ore. There was a consequent cost of handling and a serious loss thru furnace draft and boiling, due to the fine state of division of the material and the presence of sulphates, acid, and moisture.
The object of the paper is to treat this material by some leaching process, which will eliminate the above enumerated losses, and at the same time present the finished product at a lower cost, and with a higher extraction per ton, than …
A Study Of A Certain Filled-Sink Ore Deposit, Azmon Thurman Dunham
A Study Of A Certain Filled-Sink Ore Deposit, Azmon Thurman Dunham
Bachelors Theses
"This mine, which is located about 3-1/2 miles southeast of Sullivan in the extreme northeast corner of Crawford County, Mo., was first known as the Sullivan and Bridoll Mine of the old Hamilton Iron Company. It has been operated discontinuously since about 1870. Until 1904 it was worked solely as an iron mine, but at that time development work for copper was started, and from 1905 to 1909 to mine treated only this metal. It is not known how many pounds of copper the mine has produced, but during one 20 day run in 1904 of which there is record, …
Flotation Applied To Silicate Sludge, Yaro Klepel, Greene Erskine
Flotation Applied To Silicate Sludge, Yaro Klepel, Greene Erskine
Bachelors Theses
"Within the past few years great success has been made of the flotation of sulfids, and to a certain extent of carbonates.
Since sulfids are easily recovered by flotation it seems practicable that silicates could be made to float by first sulfidizing them, and then subjecting them to ordinary flotation treatment.
This problem involves the treatment of a silicate sludge obtained from the Joplin district, the sludge will easily pass through a 250 mesh screen. At the present time this sludge is being sent to the tailings pond.
The experimental work of this thesis was done along the line of …
Some Chemical Problems In Geology, Reginald Scott Dean
Some Chemical Problems In Geology, Reginald Scott Dean
Masters Theses
"This thesis is in the main a compilation of the views held at this institution in regard to the problems discussed as interpreted by the author. No claims for originality are made except in the manner of presentation as the material used has been obtained by conference and class room work with Professor V. H. Gottschalk and Professor G. H. Cox and also to some extent with H. A. Buehler, State Geologist. On the other hand the material is an expression of these ideas as assimilated by the author and hence may in certain cases differ radically from the views …
The Electro Deposition Of Lead In Sugar And Acetate Solutions, Abe Lew Kaplan
The Electro Deposition Of Lead In Sugar And Acetate Solutions, Abe Lew Kaplan
Bachelors Theses
"The experiments, while hardly sufficiently numerous, seemed to indicate that sugars do not have a good effect on cathodic lead deposits"--Conclusion, page 14.
The Electrolysis Of Potassium Lead Tartrate Solutions, Reginald Scott Dean
The Electrolysis Of Potassium Lead Tartrate Solutions, Reginald Scott Dean
Bachelors Theses
"Kahlenberg and Hillyer have shown that lead oxide (PbO) dissolves in neutral potassium tartrate to form a strongly alkaline solution in which the ratio of potassium to lead is 1:1. Since this solution shows a very low concentration of lead ion it might be expected to give a smooth and adherent cathode deposit. The purpose of this thesis is to determine its possible applicability as a refining electrolyte"--page 1.
Some Phenomena Which Accompany The Electrolysis Of Certain Salt Solutions, When The Electrodes Are Physically Separated By Means Of A Diaphragm Of Solid Gelatine, Containing The Same Salt As Is Used For The Electrolyte: A Study Of The Automatic Termination Of The Electrolysis, When Conducted Under The Above Conditions, Ernest Carl Wagner
Chemistry Honors Papers
This 22 page thesis is a record of work done during the summer of 1910, by Dr. W. H. Stoner, and during the summer of 1912 and the spring of 1914, by the writer, in the Chemical Laboratory of the Medico-Chirurgical College of Philadelphia.
Portland Cement, Asphalts And Bitumens, George R. Ensminger
Portland Cement, Asphalts And Bitumens, George R. Ensminger
Chemistry Honors Papers
This 37 page thesis classifies and analyzes cements, rock asphalt and bitumen.
A Comparison Of Missouri Sandstones, Llewelyn Lodwick
A Comparison Of Missouri Sandstones, Llewelyn Lodwick
Bachelors Theses
"Because of the scarcity of fossils in sandstones, the ages of these stones are difficult to determine except by the fossil bearing rocks either above or below them. Consequently, sandstones, even of the same area, are often separated and correlated with difficulty. It is for this reason that an effort is made to determine a means by which each sandstone may be identified"--Introduction, page 1.
The Determination Of The Critical Sizes In Table Concentration, Julius C. Miller, John N. Webster
The Determination Of The Critical Sizes In Table Concentration, Julius C. Miller, John N. Webster
Bachelors Theses
"It has been observed in table concentration that the ore band consists of the coarest sic particles of ore on the bottom or low side. Further up on this ore band the coarse particles grade into finer particles, until a certain marked degree of fineness is reached by which the mineral can no longer adhere to the table top, but must be carried over by the wash water as slimes. To determine the critical size of ore of practical value which will remain in the concentrates band, under certain variable conditions, is the purport of this thesis"--Object of Experiment, page …
An Investigation In Concentrating A Certain Tailing On Wilfley Tables, Theodore Saunders Dunn, Roy Nicoll Mcbride
An Investigation In Concentrating A Certain Tailing On Wilfley Tables, Theodore Saunders Dunn, Roy Nicoll Mcbride
Bachelors Theses
"The object of this investigation was to determine the adaptibility sic to concentration on a Wilfley table of a certain tailing carrying silver, lead, and zinc. The material was from the tailing dump of the Red Elephant Mine, operated by the Danaher Mining and Milling Company, of Hailey, Idaho, who are now considering treating this material if it can be done economically"--page 2.
Flotation Applied To Basic Ores, Orion Dexter Neal
Flotation Applied To Basic Ores, Orion Dexter Neal
Bachelors Theses
"Concentration, by flotation, as used in to-day is limited to the ores containing an acid gangue. Although, it is probable, that in a few instances flotation schemes are being used on certain ores containing basic gangue, the processes are carefully guarded as trade secrets. It was with ores containing basic gangue that the experiments embodied in this thesis were made, in an effort to determine some means of concentration and also to determine the best conditions for some of the varying factors"--page 1.
The Detection Of Poisons, Lloyd S. Cassel
The Detection Of Poisons, Lloyd S. Cassel
Chemistry Honors Papers
This 29 page thesis examines methods to determine the presence of various classes of poisons.
Gravimetric Analysis, Walter M. Lauer
Gravimetric Analysis, Walter M. Lauer
Chemistry Honors Papers
This 16 page thesis examines gravimetric quantitative analyses of various metals.
The Chemical Analysis Of Potable Waters, Ellwood Paisley
The Chemical Analysis Of Potable Waters, Ellwood Paisley
Chemistry Honors Papers
This 24 page thesis examines samples of drinking water, analyzing turbidity, sediment, odor and other elements present.
The Preservation And Interpretation Of Ripple Marks And Sun Cracks, Donald Hewson Radcliffe
The Preservation And Interpretation Of Ripple Marks And Sun Cracks, Donald Hewson Radcliffe
Bachelors Theses
"The Roubideaux sandstone (Cambrian) which is rather extensively found in the vicinity of Rolla, Mo., offers exceptional opportunities for the study of ripple marks and sun cracks in place. Fig. 1 shows the principal localities in which these structures are to be found in this vicinity.
The statement is made by Van Hise and others that ripple marks can be used in determining structures, and that to do this it is necessary to be able to tell whether a ripple mark is right side up or overturned. The rule as laid down by them is: That a normal ripple mark …
The Measurement Of Mineral Electrode Potentials, John Charavelle Ingram
The Measurement Of Mineral Electrode Potentials, John Charavelle Ingram
Bachelors Theses
"The present investigation was undertaken with a view to consider the variables which tend to cause inaccuracy in the above mentioned measurements and as preliminary to a further study of the subject by the Missouri Bureau of Geology and Mines. The subject is one which, judging from the work of others and from my own experience, will require much more experimentation before results are obtained which are sufficiently reliable for the use of the economic geologist"--Introduction, page 3-4.
Volhard's Volumetric Method For Manganese, John A. Murphy
Volhard's Volumetric Method For Manganese, John A. Murphy
Bachelors Theses
"The purpose of this article and the data contained is an attempt to show how the percentage of manganese varies with different mounts of zinc salt present. It was also intended to determine the ratio of manganese to oxygen and zinc in the brown percipitate sic obtained upon the titration of manganese sulphate against a permanganate solution in the presence of varying quantities of zinc, but through an oversight the data is insufficient for this purpose"--Introduction, page 2.
Geology Of The Killdeer Mountains, Dunn County, North Dakota, Terence T. Quirke
Geology Of The Killdeer Mountains, Dunn County, North Dakota, Terence T. Quirke
Theses and Dissertations
No abstract provided.
Temperature Conditions At Orono, Maine, Ernest Claude Drew
Temperature Conditions At Orono, Maine, Ernest Claude Drew
Electronic Theses and Dissertations
This thesis is an outgrowth of a much larger piece of work which the Department of Physics, thru its instructors and major students, has undertaken to complete. The task referred to, is the compilation, arrangement, and summarizing of the various meteorological records taken at the University of Maine for the past forty-four years. These records were begun in the above department by Dr. M. C. Fernald in the year 1869 and were continued by him until 1893. The work was then transferred to the Experiment Station, where observations were made under the direction of Doctors W. H. Jordan and C. …
Select Methods In Quantitative Chemical Analysis, Florence Ada Brooks
Select Methods In Quantitative Chemical Analysis, Florence Ada Brooks
Chemistry Honors Papers
This 18 page thesis examines various methods of quantitative chemical analysis.