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Articles 291451 - 291480 of 294002
Full-Text Articles in Entire DC Network
The Basic Analogue Of Kummer’S Theorem, J. A. Daum
The Basic Analogue Of Kummer’S Theorem, J. A. Daum
Department of Mathematics: Faculty Publications
About one hundred years ago, E. E. Kummer proved the formula
(1) 2F1 [1 + a – b a, b; -1] = [Γ(1 + a - b)Γ(1 + a/2) ÷ Γ(1+a)Γ(1+a/2 - b)
which has since been known as Kummer's theorem. This appears to be the simplest relation involving a hypergeometric function with argument ( - 1).
All the relations in the theory of hypergeometric series rF8 which have analogues in the theory of basic serie3 are those in which the argument is ( + 1 ) …
Decay Of Western Hemlock In Western Oregon And Washington, G. H. Englerth
Decay Of Western Hemlock In Western Oregon And Washington, G. H. Englerth
Yale School of the Environment Bulletin Series
No abstract provided.
Growing Of White Pine On The Yale Forest Near Keene, New Hampshire, Ralph C. Hawley, Robert T. Clapp
Growing Of White Pine On The Yale Forest Near Keene, New Hampshire, Ralph C. Hawley, Robert T. Clapp
Yale School of the Environment Bulletin Series
No abstract provided.
Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman
Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman
Yale School of the Environment Bulletin Series
No abstract provided.
An Experimental Investigation Of Certain Phases Of The Reaction Of Meta Dinitrobenzene And Carbonyl Compounds, William Elson
An Experimental Investigation Of Certain Phases Of The Reaction Of Meta Dinitrobenzene And Carbonyl Compounds, William Elson
Master's Theses
No abstract provided.
A Study Of The Preparation Of Phenyl Sodium, William W. Jenkins
A Study Of The Preparation Of Phenyl Sodium, William W. Jenkins
Master's Theses
No abstract provided.
Titration Curves Of Indicators, Marvin F. L. Johnson
Titration Curves Of Indicators, Marvin F. L. Johnson
Master's Theses
No abstract provided.
A Study Of The Electrolytic Reduction Of Pyrrole, Don Richard Strehlau
A Study Of The Electrolytic Reduction Of Pyrrole, Don Richard Strehlau
Masters Theses
"A review of the chemical literature has shown that electro-organic methods compare favorably with purely chemical methods for certain syntheses belonging to the following general classes of reactions: coupling, oxidation, reactions with halogens, and reductions. Electro-organic methods have been used most successfully in synthesis by reduction. The chief advantage is using electrolytic reduction in preference to a chemical one is that it offers a more exact control of conditions, and consequently should give a higher yield and a purer product. The advantages of the means of reduction suggested an investigation of its use in the synthesis of hydrogenated products of …
The Monadnock Volume 16, Number 1, December 1941, Clark University Geographical Society
The Monadnock Volume 16, Number 1, December 1941, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 16, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
The Origin Of Daemonelix, Alvin Leonard Lugn
The Origin Of Daemonelix, Alvin Leonard Lugn
Department of Earth and Atmospheric Sciences: Faculty Publications
Attention is called to the controversy of some years ago over the origin of the "Devil's Corkscrews." The problem may have appeared unimportant then, but now a correct understanding of the paleoecology of Harrison time may hinge on the explanation of these strange "fossils." The characteristics of Daemonelix are briefly reviewed, they are compared to the lianas of the modern tropical jungle, and the postulated conditions of Harrison sedimentation are believed to supply an adequate explanation for the presence of fossil rodent remains in the Daemonelices. The possibility of a vegetal origin of these fossils is believed to be demonstrated.
The Magnesium Content Of The Rocks Of The Upper Cretaceous System Of Ellis And Osborne Counties, Kansas, Robert Funston
The Magnesium Content Of The Rocks Of The Upper Cretaceous System Of Ellis And Osborne Counties, Kansas, Robert Funston
Master's Theses or Doctor of Nursing Practice
The recent impetus given industry by the national defense emergency has made everyone more or less conscious of the great importance of minerals. During the past few years some of the industrial leaders of Kansas have been attempting to promote the natural resources of the state. Some minerals once considered of little or no value are now being developed. For many years the limestone rocks of Western Kansas have been used for building purposes. Until recently little work has been done on the chemical composition of these rocks. The author has decided to continue the study by analyzing the rocks …
A Study Of The Transparency Of Paraffin Wax, Gordon B. Smith
A Study Of The Transparency Of Paraffin Wax, Gordon B. Smith
Bachelors’ Theses
The problem of wax transparency with which this thesis is concerned interested the author as a result of past experience with a bakery firm. The practical application of a positive solution to this problem would be as a competitor of cellophane, that is, transparent paraffin used for commercial wax paper would combine the quality of keeping bakery goods fresh with the display value of cellophane.
A Study Of The Bright Nickel Producing Properties Of Tergitol Penetrant 4, Maurice F. Murphy
A Study Of The Bright Nickel Producing Properties Of Tergitol Penetrant 4, Maurice F. Murphy
Bachelors’ Theses
For many years, it has been known in the plating industry that certain metal baths were affected when materials called ’'addition agents” were added. The addition agents were usually organic and had high molecular weights. Nickel is especially sensitive to the presence of such foreign substances, a very bright deposit being obtained upon the addition of small amounts of gum, gelatin, glue, gum tragacanth, gum arabic and similar materials. These substances have, however, proved unsatisfactory because of difficulty of control and because of decomposition of the agent.
In the past ten years a new type of bright nickel bath has …
Activity Of Papain On Gelatin Mixtures, Edward J. Ruschmann
Activity Of Papain On Gelatin Mixtures, Edward J. Ruschmann
Bachelors’ Theses
Within the Marquette chemical laboratories under the direction and supervision of Dr. John R. Koch, professor and head of the Chemistry Department, many noteworthy advances in enzyme chemistry have been achieved. A new type all glass, single unit viscometer was developed and perfected by Koch and now is the basis of the study of enzyme activity by viscometric methods. The use of this viscometer is not limited solely to work in these laboratories but has also been used with great success in bating and brewing.
Will Russia Win The War?, Alvin Leonard Lugn
Will Russia Win The War?, Alvin Leonard Lugn
Department of Earth and Atmospheric Sciences: Faculty Publications
As this is written, Russia is not in the war; nevertheless, she may eventually win the war. It may not be immediately, it may not be for a generation, it may not be for fifty or more years, and it may be very soon. The "War" may not even be the present holocaust which engulfs Europe; but eventually Russia may win, even though new battles may be won and lost and perhaps much more blood spilled in the meantime; even a German victory may intervene with far-flung domina- tion in all of the continents.
Russia possesses unmeasured elements of strength …
The Feeding Habits Of Gambusia Affinis Affinis, With Special Reference To The Malaria Mosquito, Anopheles Quadrimaculatus, A.D. Hess, Clarence M. Tarzwell
The Feeding Habits Of Gambusia Affinis Affinis, With Special Reference To The Malaria Mosquito, Anopheles Quadrimaculatus, A.D. Hess, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
The viviparous top minnow, Gambusia affinis affinis (Baird and Girard), has for many years been considered an important predator of the immature stages of mosquitoes. Various field workers have reported on the value of this species in controlling both anopheline and culicine mosquitoes, but few detailed studies have been made. Probably the most detailed of these has been that of Hildebrand (1925). His investigations were made during the summers of 1921-24 in the vicinity of Augusta, Ga., with the subspecies G. affinis holbrooki. Employing the common dipper method, he compared the densities of anopheline and culicine larvae and pupae in …
The Conversion Of Certain Amino Acids To Carbohydrate In Normal Animals, Bergere Alfred Kenney
The Conversion Of Certain Amino Acids To Carbohydrate In Normal Animals, Bergere Alfred Kenney
Chemistry and Chemical Biology ETDs
Among the earliest problems which interested the physiological chemist was that of the possibility of an interconversion of the major types of food-stuffs. That this conversion actually does take place in the case of carbohydrates changing to fats has been apparent, ever since Man began to fatten his domestic animals on a starchy diet. However, interconversion of the other types, such as that of fats to carbohydrates and proteins, or carbohydrates to proteins, and of proteins to carbohydrates and fats, is not so obvious, and even now, after many years of experimentation, the answer to the question is far from …
Studies Arising From A Problem In The Calculus Of Variations, John Gonzalez
Studies Arising From A Problem In The Calculus Of Variations, John Gonzalez
Mathematics & Statistics ETDs
In mathematics, generalization is progress; so much so that oftentimes one loses sight of the fact that generalization is the result of arduous work in the consideration of the particular. In no other branch of mathematics is this better exemplified than in the Calculus of Variations. The beginning of a systematic development of the theory of the Calculus of Variations really started with the two Bernoulli brothers (1654-1748) in their discussion of the brachistochrone problem in 1696. The method devised by them were sufficiently powerful in the attack of a large number of problems. Euler (1707-85) further elaborated the geometrical …
Some Investigations On Quantitative Measurement Of Amalgamation, Charles Moore
Some Investigations On Quantitative Measurement Of Amalgamation, Charles Moore
Bachelors Theses and Reports, 1928 - 1970
Amalgamation is a process in which precious metals are collected by mercury. The exact way in which the mercury holds the other metals is not positively known. It is probable that a series of intermetallic compounds form. Very little work has been done so far on the theory of amalgamation.
The Geographic Distribution Of Azotobacter And Rhizobium Meliloti In Nebraska Soils In Relation To Certain Environmental Factors, H. B. Peterson, T. H. Goodding
The Geographic Distribution Of Azotobacter And Rhizobium Meliloti In Nebraska Soils In Relation To Certain Environmental Factors, H. B. Peterson, T. H. Goodding
Nebraska Agricultural Experiment Station: Historical Research Bulletins
In this investigation a survey of Nebraska soils has been made in order to determine the distribution of the aerobic nonsymbiotic and symbiotic nitrogen fixers of the genera Azotobacter and Rhizobium respectively. In connection with this survey, some of the characteristics of the soils which may bring about this distribution were studied. Up to this time practically no research has been reported on the microflora of the soils of Nebraska. Hence there is little basis for predicting the activity of these organisms under environmental conditions as they exist here. It is hoped that this work will not only supply some …
A Study Of The Effect Of Various Organic Compounds Upon The Corrosion Resistance Of Stainless Steel In Sulfuric Acid, Cyril J. Stockhausen
A Study Of The Effect Of Various Organic Compounds Upon The Corrosion Resistance Of Stainless Steel In Sulfuric Acid, Cyril J. Stockhausen
Bachelors’ Theses
Ever since the use of metals become a vital part of modern living, much has "been written about corrosion and its prevention. With regard to corrosion prevention by means of absorbed films, most of the study has "been restricted to experimentation either with commercial compounds of unknown composition or complex amines and sulfonates with little attention paid to a comparison of different polar groupings and the influence of metallic structure.
Stratigraphy And Paleontology Of The Eagle Formation In Montana And Adjacent Areas, Raymond Thompson
Stratigraphy And Paleontology Of The Eagle Formation In Montana And Adjacent Areas, Raymond Thompson
Bachelors Theses and Reports, 1928 - 1970
A conspicuous two hundred and fifty foot sandstone of central Montana, known as the Eagle Formation, constitutes part of the some five thousand feet of Cretaceous sediments in the state. It stands out in steep cliffs which stretch for many miles in the outcrop area from Wyoming to Canada.
Basic Information In The Granitic Rocks Of The Boulder Batholith, Clifford G. Sherwin
Basic Information In The Granitic Rocks Of The Boulder Batholith, Clifford G. Sherwin
Bachelors Theses and Reports, 1928 - 1970
Dark fine grained basic masses of rock are found in nearly every part of the Boulder Batholith, these commonly being referred to as inclusions, segregations, autoliths, and various other names. The origin, distribution, and composition of the dark inclusions form the basis for this report.
Some Chromite Deposits In Madison County, Montana, Russell H. W. Chadwick
Some Chromite Deposits In Madison County, Montana, Russell H. W. Chadwick
Bachelors Theses and Reports, 1928 - 1970
Chromite occurs in Madison County, Montana, in two areas, one three miles southwest of Silver Star, the other five miles southeast of Sheridan. The ore bodies are small, lenticular masses surrounded by metamorphosed sedimentary rocks of the pre-Cambrian Cherry Creek series. The ore was deposited from the hydrothermal solutions which serpentinized the surrounding metamorphic host rocks.
The Electrowinning Of Manganese From Rhodochrosite, Lloyd L. Thompson
The Electrowinning Of Manganese From Rhodochrosite, Lloyd L. Thompson
Bachelors Theses and Reports, 1928 - 1970
Manganese is commonly known to be a metal of great strategic importance. It is essential in the production of all steels, first as a scavenger to remove oxygen and sulfur, and second as an alloying element in wear-resistant steels.
Some Effects Of The Addition Of Tellurium To Lead Alloys, Selim Ozsahin
Some Effects Of The Addition Of Tellurium To Lead Alloys, Selim Ozsahin
Bachelors Theses and Reports, 1928 - 1970
From the standpoint of its practical usefulness, the most important characteristics of metallic lead are its cheapness, resistance to corrosion, plasticity, high specific gravity, low melting point, and its ability to form alloys in which some properties are modified by the addition of other elements, while other properties remain the same.
The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solutions, Phillip L. Banfield
The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solutions, Phillip L. Banfield
Bachelors Theses and Reports, 1928 - 1970
The cyanide method of extraction of gold and silver from their ores is extensively used in the United States and elsewhere. It is becoming increasingly more important in its use as the mining of lower grade deposits continues.
Some Preliminary Investiagtions Of The Magnetic Permeabilities Of Alloys Of The Ferromagnetic Metals, John H. Gambill Jr.
Some Preliminary Investiagtions Of The Magnetic Permeabilities Of Alloys Of The Ferromagnetic Metals, John H. Gambill Jr.
Bachelors Theses and Reports, 1928 - 1970
The problem presented for this thesis was an investigation of the magnetic properties of the alloys produced by the methods of powder metallurgy. The question behind this was the correlation of the magnetic properties with the bonding properties and with the diffusion of the constituents.
The Theory Of Alloy Deposition And The Effect Of A Rotating Cathode Upon Such Deposition, With Special Attention To The Possibility Of Depositing Sterling Silver, Kenneth J. Stodden
The Theory Of Alloy Deposition And The Effect Of A Rotating Cathode Upon Such Deposition, With Special Attention To The Possibility Of Depositing Sterling Silver, Kenneth J. Stodden
Bachelors Theses and Reports, 1928 - 1970
In the past few years a great deal of attention has been given to the electrodeposition of alloys. For the main part, this investigation has been of scientific interest only; but in a few instances, such work has attained commercial importance.
Measurements Of The Magnetic Permeabilities Of The Iron-Manganese Alloy System Prepared By The Methods Of Powder Metallurgy, O. Cihad Onbulak
Measurements Of The Magnetic Permeabilities Of The Iron-Manganese Alloy System Prepared By The Methods Of Powder Metallurgy, O. Cihad Onbulak
Bachelors Theses and Reports, 1928 - 1970
Powder metallurgy is a branch of metallurgy which produces metallic compacts in their final forms by means of pressure and heat-treatment from the powders. The products of powder metallurgy are being used in our daily lives quite often. For example, the tungsten wires in the electric bulbs to the silver-tin fillings of our teeth.