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Articles 42421 - 42450 of 42620
Full-Text Articles in Entire DC Network
The Monadnock Volume 13, Number 1, December 1938, Clark University Geographical Society
The Monadnock Volume 13, Number 1, December 1938, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 13, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
A Study Of The Viscosity Of Gelatines, Mary Anthony Keller
A Study Of The Viscosity Of Gelatines, Mary Anthony Keller
Bachelors’ Theses
Only a casual perusal of the literature treating of enzymes impresses one with the importance of the subject. How could the process of digestion be carried on without the action of enzymes? The tanning industry is primarily concerned with so-called bates, which are enzymes. Other industrial ope.rations, such as brewing, the manufacture of glue, petroleum refining, the production of rubber and starch, are likewise largely dependent on enzymatic action. Another phase of enzyme activity turns to the prevention of disease and medical diagnosis.
Substrates are of no less importance. The present work is not so much a study of -enzymatic …
The Iodine Value Of Tung Oil, M. Beto Reiss
The Iodine Value Of Tung Oil, M. Beto Reiss
Bachelors’ Theses
In the oil and fat industry the iodine value is one of the most important criteria in testing for the purity of the substance at hand. According to the amount of iodine absorbed fats are classified as drying, semi-drying, and non-drying oils. If the respective oil possesses and iodine value lying between 130 and 200, it is considered a drying oil; between 95 and 130, a semi-drying oil, and between 1 and 95, a non-drying oil.
A Proposed Method For Classifying And Evaluating Soils On The Basis Of Productivity And Use Suitabilities, Arthur Anderson, A. P. Nelson, F. A. Hayes, I. D. Wood
A Proposed Method For Classifying And Evaluating Soils On The Basis Of Productivity And Use Suitabilities, Arthur Anderson, A. P. Nelson, F. A. Hayes, I. D. Wood
Nebraska Agricultural Experiment Station: Historical Research Bulletins
It is the object of this paper to present a method for classifying and evaluating the soils as mapped in regular soil surveys on the basis of land types, which are here defined as areas having reasonably similar productivity and use suitabilities. The standards used to differentiate land types will vary according to the desired objectives, but any material difference in yield, or in practices necessary to maintain a desirable level of productivity will justify recognition of land types. The proposed procedure involves a more detailed study of the influence which soils, slope, erosion, and drainage have on specific crops …
The Effect Of Time, Temperature, And Pressure On The Hydrogenation Of Castor Oil, Darwin F. Kaestner
The Effect Of Time, Temperature, And Pressure On The Hydrogenation Of Castor Oil, Darwin F. Kaestner
Bachelors’ Theses
Although much research and investigation has been carried out during the past twenty years on t he hydrogenation of oils; only a small ·amount of this research has been devoted to the study of the hydrogenation of castor oil. In recent years much time has been devoted to the hydrogenation of those oils which yield edible fats. Castor oil, on the other hand, does not result upon hydrogenation in the formation of an edible fat, and hence, its characteristics were not fully studied. The intention of the author in doing this thesis was to obtain some data as to the …
The Comparative Analysis Of Iron Ore, Archie G. Sailer
The Comparative Analysis Of Iron Ore, Archie G. Sailer
Bachelors’ Theses
Our country has been fortunate in having abundant iron resources at its disposal. Their extensive development accounts for our rapid material progress and our high degree of civilization. Of all these natural resources none has contributed more to the commercial supremacy of the United States, to the prosperity of its communities and to the individual comfort of its citizens than the iron ore reserves of the Lake Superior region.
A Study Of Melting Points Of Various Binary And Tertiary Mixtures Of Waxes, Neil G. Goodrich
A Study Of Melting Points Of Various Binary And Tertiary Mixtures Of Waxes, Neil G. Goodrich
Bachelors’ Theses
The work undertaken in this thesis was done in cooperation with Joseph Sevenich and is a continuation of the work done by George Hable, Leonard Veranth and Lewis Wrangell. In this present work, the melting points of various trinary mixtures of waxes was studied, also the reliability of the method used in the determinations, and the effect of heat upon the mixtures. Graphs are used in the thesis in order to present a clearer picture of the work done and the results obtained.
Infiltration And Capillary Rise In Sandy Soils, Wallace M. Johnson
Infiltration And Capillary Rise In Sandy Soils, Wallace M. Johnson
Journal of the Minnesota Academy of Science
No abstract provided.
The Search For Natural History Areas In Minnesota, A. N. Wilcox, W. J. Breckenridge, R. L. Donovan, T. B. Magath, H. E. Stork, Gustav Swanson
The Search For Natural History Areas In Minnesota, A. N. Wilcox, W. J. Breckenridge, R. L. Donovan, T. B. Magath, H. E. Stork, Gustav Swanson
Journal of the Minnesota Academy of Science
No abstract provided.
Adjustment Of Irrigation Charges, Uintah Indian Project, Utah, United States Department Of Interior
Adjustment Of Irrigation Charges, Uintah Indian Project, Utah, United States Department Of Interior
Elusive Documents
No abstract provided.
Report Of Progress Of The Nebraska State Museum, Erwin H. Barbour
Report Of Progress Of The Nebraska State Museum, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
The history and development of the Nebraska State Museum since 1891 have been summarized in a preliminary manner up to 1925 in the first number of Volume I of the Bulletin of the Nebraska State Museum.1 Since 1927, the collections of the Nebraska State Museum, The University of Nebraska, have been housed in a new building, Morrill Hall, on the city campus of The University of Nebraska. It now seems fitting to report upon the exceptional progress of the past few years, and to acknowledge the fine cooperation of those who have helped to make it possible.
Louisiana Tertiary Bryozoa., James Holland Mcguirt
Louisiana Tertiary Bryozoa., James Holland Mcguirt
LSU Historical Dissertations and Theses
No abstract provided.
The Monadnock Volume 12, Number 1, December 1937, Clark University Geographical Society
The Monadnock Volume 12, Number 1, December 1937, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 12, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
The Preparation Of Glucuronic Acid From Gum Acacia, Mary Laurissa Felix
The Preparation Of Glucuronic Acid From Gum Acacia, Mary Laurissa Felix
Bachelors’ Theses
Initial interest in the preparation of glucuronic acid from gum acacia was prompted by several reasons. Being interested in both the chemical and biological fields, the subject of glucuronic acid made a strong appeal. Although glucuronic acid was discovered over fifty years ago, its position in physiology remained until recently undefined. Now, however, it seems fairly certain that this compound is closely related to carbohydrate metabolism and plays an important role as a detoxicating agent in the body.
The laboratory preparation of glucuronic acid is still one of the important problems of chemistry. Our present knowledge of its synthesis and …
Remarkable West American Fossil, The Blue Lake Rhino, George F. Beck
Remarkable West American Fossil, The Blue Lake Rhino, George F. Beck
All Faculty Scholarship for the College of the Sciences
Bidding for acceptance as fact, and for its place in the sun of fame and notoriety, we come now to the newly discovered fossil rhino animal mold of Blue Lake in Grand Coulee, central Washington. Not that fossil rhinos are rare or that their abundance in the Tertiary of America has waited until the present for revelation, is this fossil important. The feature in the Blue Lake rhino which taxes our credulity is the existence of the thing in what unquestionably must pass as once liquid basaltic lava. That anything organic could pass through the terrific heat and pressure of …
A Study Of The Gelation Of Several Paraffins In Various Solutions, Joseph John Wocasek
A Study Of The Gelation Of Several Paraffins In Various Solutions, Joseph John Wocasek
Bachelors’ Theses
In the selection of various waxes for commercial use, it has long been the custom to depend solely upon melting-point for property determination. Thus, for example, all paraffin waxes which had a melting range between 50 and 65 degrees centigrade, were thought to have much the same properties and that any or the commercial paraffins of this range would therefore impart the same characteristics to the product in which they were to be used. But with increased use, these waxes have come under more careful observation and experimentation. Very little data has as yet been released for publication but already …
The Effect Of Calcium And Ammonium Salts On Enzyme Action, Erwin F. Karow
The Effect Of Calcium And Ammonium Salts On Enzyme Action, Erwin F. Karow
Bachelors’ Theses
The object of this thesis is to study the effect of various ammonium and calcium salts upon the digestive action of trypsin, pancreatin and papain. A perusal of the literature reveals only a small amount of information upon the subject.
Formations Of The Columbia Basin, Parade Of Extinct Mammals, George F. Beck
Formations Of The Columbia Basin, Parade Of Extinct Mammals, George F. Beck
All Faculty Scholarship for the College of the Sciences
In this preliminary chart are shown the extinct mammals encountered as fossils in the various formations among and above the great Columbia Basalt series of the Pacific Northwest. A few shown as appearing in the Lake Vantage horizon of the basalts.
Fifty-First Annual Meeting Of The Iowa Academy Of Science And The Sixth Annual Convention Of The Junior Academy Of Science Of Iowa, April 16 And 17, 1937, Iowa Academy Of Science
Fifty-First Annual Meeting Of The Iowa Academy Of Science And The Sixth Annual Convention Of The Junior Academy Of Science Of Iowa, April 16 And 17, 1937, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
Camels Of The Columbia Plateau, George F. Beck
Camels Of The Columbia Plateau, George F. Beck
All Faculty Scholarship for the College of the Sciences
However foreign they may seem to us the camels are one of our oldest American stocks. Our Western plains once supported large herds of them, humped and humpless, large and small, giraffe-necked and normal-necked. For some 35 million years, from Oligocene to the Pliocene, the camels were confined to North America and it was not until recently, geologically speaking that we shared the race with the Old World.
Droughts, Dust Storms And Desolation, D. H. Davis
Droughts, Dust Storms And Desolation, D. H. Davis
Journal of the Minnesota Academy of Science
No abstract provided.
The Extent To Which The Snow Blanket Influences The Temperature Beneath It, W. C. Croxton, Page Nicholson
The Extent To Which The Snow Blanket Influences The Temperature Beneath It, W. C. Croxton, Page Nicholson
Journal of the Minnesota Academy of Science
No abstract provided.
Wood Occurring In The Ginkgo And Associated Petrified Forest (No. 1-The Gingko), George F. Beck
Wood Occurring In The Ginkgo And Associated Petrified Forest (No. 1-The Gingko), George F. Beck
All Faculty Scholarship for the College of the Sciences
The most interesting single fossil tree, but at the same time the most difficult to determine in the Ginkgo Petrified Forest (Washington), is the tree after which this unusual petrified forest takes its name. The ginkgo is not only the world's oldest and most remarkable living tree, but it has long been regarded as holding the most striking fossil record of any living thing, plant or animal.
A Preliminary Study Of The Animal Ecology Of The Niobrara Game Preserve, Watson E. Beed
A Preliminary Study Of The Animal Ecology Of The Niobrara Game Preserve, Watson E. Beed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A Study Of The Temperature Of Gelation And Solubility Range For Paraffin Waxes In Several Solvents, Stanley Francis Gebarski
A Study Of The Temperature Of Gelation And Solubility Range For Paraffin Waxes In Several Solvents, Stanley Francis Gebarski
Bachelors’ Theses
In organic literature and text books a certain melting point of paraffin is taken as indicating a certain range of paraffin hydrocarbons and the discussion terminated at that point.
A Study Of The Decomposition Potentials Of A Commercial Gluconic Acid Bath, Roman L. Pozorski
A Study Of The Decomposition Potentials Of A Commercial Gluconic Acid Bath, Roman L. Pozorski
Bachelors’ Theses
The study of electrochemistry is not only fascinating and worthwhile, but essential to the student of chemistry in the understanding of many theories and chemical phenomena. Though electrochemistry is still in its infancy, numerous substances are prepared electrolytically in industry. It is reported that about 15% of all the chemical goods manufactured are prepared by electrochemical industries. Of the various types of studies, in electrochemistry, the one which appears to be most appealing is the analysis of chemical reaction sin which electrochemical methods are used. The determination of decomposition potentials is one of these methods. A knowledge of decomposition values …
The Influence Of Ph On The Activity Of Trypsin And Papain (Caroid) As Measured By A Modification Of The Northrup Gravimetric Casein Method, Frank W. Dragan
The Influence Of Ph On The Activity Of Trypsin And Papain (Caroid) As Measured By A Modification Of The Northrup Gravimetric Casein Method, Frank W. Dragan
Bachelors’ Theses
Hydrogen ion concentrations have long been recognized as an essential factor in many biochemical processes.
The influence of hydrogen ion concentration upon enzyme activity has been of especial importance as proteolytic enzymes are rapidly gaining in use in various industries, principally the tanning industry.
The Vitamin D And Provitamin D Content Of Some Varieties Of Utah Wheat, Harold M. Nielsen
The Vitamin D And Provitamin D Content Of Some Varieties Of Utah Wheat, Harold M. Nielsen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Cereal grains were known to be notably deficient in the anti-rachitic principle even before the discovery of vitamin D. Clinicians had associated a type of rickets of infancy, characterized by an over-weight, flabby, bowlegged condition, with a diet consisting mainly of cereals. Mellanby (1) in 1921 concluded that this type of rickets is induced by overfeeding with carbohydrates. He also showed in the same report, however, that oatmeal, although it contains less carbohydrates than the other grains tested, possesses a special tendency toward rachitogenesis.
Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson
Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson
Bachelors Theses and Reports, 1928 - 1970
Gold is one of the rarer metals in nature, and chemically it is one of the most inactive. Gold forms stable, natural compounds with few other elements, and only with metals.
Ua37/23 Whas Broadcast No. 31, Whas, Western Kentucky University, Earl Moore
Ua37/23 Whas Broadcast No. 31, Whas, Western Kentucky University, Earl Moore
WKU Administration Documents
Script for weekly WKU broadcast on WHAS radio. This show included Kelly Thompson, Norma Lagura, C.P. McNally, Karl Beyer, Virginia Fortenberry, Helen Albritton, Paul McDaniel and B.T. Towery.