Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Computer Sciences (17776)
- Chemistry (12653)
- Environmental Sciences (10210)
- Earth Sciences (8842)
- Engineering (8389)
-
- Physics (7968)
- Mathematics (6346)
- Life Sciences (5403)
- Geology (4925)
- Statistics and Probability (4100)
- Social and Behavioral Sciences (3542)
- Oceanography and Atmospheric Sciences and Meteorology (3494)
- Applied Mathematics (2490)
- Artificial Intelligence and Robotics (2367)
- Medicine and Health Sciences (2162)
- Electrical and Computer Engineering (1845)
- Databases and Information Systems (1839)
- Computer Engineering (1761)
- Civil and Environmental Engineering (1475)
- Business (1458)
- Natural Resources and Conservation (1457)
- Water Resource Management (1412)
- Organic Chemistry (1378)
- Education (1352)
- Astrophysics and Astronomy (1348)
- Analytical Chemistry (1331)
- Materials Science and Engineering (1321)
- Sustainability (1310)
- Geophysics and Seismology (1286)
- Institution
-
- Louisiana State University (2815)
- Air Force Institute of Technology (2450)
- Utah State University (2031)
- Brigham Young University (2018)
- Old Dominion University (1935)
-
- Chulalongkorn University (1876)
- University of South Florida (1834)
- University of Central Florida (1747)
- Missouri University of Science and Technology (1662)
- University of Arkansas, Fayetteville (1612)
- University of Texas at Arlington (1529)
- Western Michigan University (1468)
- University of Texas at El Paso (1380)
- Portland State University (1373)
- University of New Mexico (1310)
- New Jersey Institute of Technology (1306)
- University of Nevada, Las Vegas (1277)
- University of Kentucky (1120)
- Clemson University (1118)
- City University of New York (CUNY) (1103)
- University at Albany, State University of New York (1046)
- California Polytechnic State University, San Luis Obispo (1039)
- University of South Carolina (1016)
- San Jose State University (927)
- Wright State University (861)
- Nova Southeastern University (837)
- Walden University (778)
- Virginia Commonwealth University (766)
- Wayne State University (738)
- University of Malaya (729)
- Keyword
-
- Machine learning (1027)
- Machine Learning (691)
- Pure sciences (564)
- Mathematics (540)
- Applied sciences (518)
-
- Computer Science (474)
- Chemistry (463)
- Deep learning (425)
- Geology (396)
- Climate change (363)
- Statistics (342)
- Sustainability (335)
- Deep Learning (297)
- Department of Computer Science and Engineering (291)
- Montana (284)
- Optimization (279)
- Artificial intelligence (272)
- Remote sensing (270)
- Simulation (268)
- Computer science (267)
- Physics (264)
- College for Professional Studies (253)
- Education (250)
- Artificial Intelligence (245)
- Modeling (237)
- Nanoparticles (237)
- Cybersecurity (236)
- School of Computer & Information Science (236)
- Security (235)
- Algorithms (234)
- Publication Year
- Publication
-
- Theses and Dissertations (8799)
- Electronic Theses and Dissertations (3529)
- Masters Theses (2074)
- Dissertations (1957)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (1876)
-
- USF Tampa Graduate Theses and Dissertations (1834)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (1432)
- LSU Doctoral Dissertations (1402)
- Open Access Theses & Dissertations (1380)
- Dissertations and Theses (1339)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (1270)
- Theses (1250)
- Graduate Theses and Dissertations (1241)
- Honors Theses (1215)
- LSU Master's Theses (1125)
- Master's Theses (980)
- Doctoral Dissertations (921)
- Master's Projects (870)
- Browse all Theses and Dissertations (861)
- Dissertations, Theses, and Capstone Projects (836)
- Walden Dissertations and Doctoral Studies (778)
- Legacy Theses & Dissertations (2009 - 2024) (741)
- All Dissertations (643)
- Wayne State University Dissertations (616)
- CCAC Theses and Dissertations (514)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (501)
- Doctoral Theses (489)
- All Theses (472)
- Theses Digitization Project (462)
- Theses, Dissertations and Culminating Projects (442)
- File Type
Articles 69301 - 69330 of 69929
Full-Text Articles in Physical Sciences and Mathematics
A Study Of Resins From Carbohydrates, Edward F. Sullivan
A Study Of Resins From Carbohydrates, Edward F. Sullivan
Bachelors’ Theses
The availability of large amounts of carbohydrates, and the need in the past years of larger markets for the available supplies of sugar have lead a number of sugar companies to investigate the possibilities of synthetic resins from carbohydrates. Although in the last ten or twelve years, a number of steps have been taken in the investigation of sugar resins, the information available has been restricted to a few patents. Consequently, information on the chemistry of the problem has been neglected. Thus, this work, for the most part, covers partially the possibilities of producing alkyd resins from saccharides, as well …
Solubilities Of Glycerides, Alois L. Wagner
Solubilities Of Glycerides, Alois L. Wagner
Bachelors’ Theses
The mono, di, and triglycerides have many uses in industry; each of these glycerides has a specific purpose, if not directly, then as an intermediary compound .in the synthesis of a glycerol derivative. In order to obtain the highest efficiency in a synthesis, or as a matter of fact, in any phase of chemistry, the production of a homogeneous result demands the use of pure uniform constituents.
The Effects Of A Carbohydrate Deficient Diet On The Mouse, Walter Rudolph Sala
The Effects Of A Carbohydrate Deficient Diet On The Mouse, Walter Rudolph Sala
Bachelors’ Theses
Deficient diets have been used extensively as the basis for zoological experiments concerning the metabolism, and dietary requirements of individual animals. The majority of this work has been carried on with the rat as the subject, and resulting external physical variations as the experimental aim. The writer used the mouse as his subject, but, since no literature was available concerning this animal, a few similar experiments performed on the rat will be cited.
The Preparation Of Some Typical Organoboron Compounds, Glen David Barbaras
The Preparation Of Some Typical Organoboron Compounds, Glen David Barbaras
Bachelors’ Theses
Organoboron compounds have long been known, the first being prepared by Frankland as early as 1862. No particular interest in these compounds was aroused, how ever, because of the difficulty and expense of their preparation as well as their extreme instability. From time to time further attempts at their preparation were made and a few reactions were ob served. With the rise of modern electronic theories of chemical combination, however, organoboron compounds were discovered to exhibit properties and undergo reactions which would substantiate these theories. Consequently, since 1936 possibly over a hundred of these compounds of many different types have …
Melting Point Studies Of Binary Mixtures Of Barbowax 4000 And 1500 And Various Waxes In An Air Chamber, Arnold P. Feider
Melting Point Studies Of Binary Mixtures Of Barbowax 4000 And 1500 And Various Waxes In An Air Chamber, Arnold P. Feider
Bachelors’ Theses
While selecting the subject of research for this thesis the author had the opportunity to consult several thesis conducted at Marquette University on the melting points of waxes.
The Corrosive Effect Of Sodium Acid Sulfite Solution Upon Stainless Steel As Compared With Carbon Steel And Cast Iron, Arthur John Haug
The Corrosive Effect Of Sodium Acid Sulfite Solution Upon Stainless Steel As Compared With Carbon Steel And Cast Iron, Arthur John Haug
Bachelors’ Theses
Tilghman, in 1866, discovered the fundamental principle of the sulfite process - the treatment of wood with a solution of sulfur dioxide gas in water, with the addition of an alkaline bisulfite. However, he was unable to pursue this discovery because of the difficulty of obtaining acid resisting materials.
Zinc Relationships Of Some Utah Soils, Wilford Derby Laws Jr.
Zinc Relationships Of Some Utah Soils, Wilford Derby Laws Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Recent reports from many parts of the United States indicate that the so-called zinc-deficiency disease is wide spread. It affects some varieties of trees in some areas and all varieties in other areas, and occurs from Florida westward to the Pacific coast and northward to the Canadian line. Although the disease is more prevalent in trees, it is also known to affect annual plants.
A recent survey of Utah orchards shows a wide-spread occurrence of little-leaf, a zinc deficiency disease, in fruit trees. The disease was found to be common on the upper sandy soils between Ogden and Salt Lake …
A Generating Voltmeter Of Wide Sensitivity Range For Measuring Atmospheric Potential Gradients, Herschel Roy Snodgrass
A Generating Voltmeter Of Wide Sensitivity Range For Measuring Atmospheric Potential Gradients, Herschel Roy Snodgrass
Physics & Astronomy ETDs
The specific need for the present instrument arose out of a consideration of the significant results that might be obtained through a coordination of reliable data on potential gradients under various cloud formations with the accompanying fast motion cloud photographs. The characteristics most desired were: (1) the continuous measurement of both the magnitude and polarity of the surface potential gradients over a wide range of values, from normal fair weather gradients of 0 to +300 volts per meter to thunderstorm gradients, possibly as high as 200,000 volts per meter; (2) easy portability; (3) resistance to harmful effects from rain, dust, …
A Discussion Of Sulfanilamide And Related Compounds, E. Curtis Leuallen
A Discussion Of Sulfanilamide And Related Compounds, E. Curtis Leuallen
Chemistry Honors Papers
This 34 page thesis discusses the history of sulfanilamide as well as its preparations, derivatives and uses as a treatment for a variety of illnesses.
A Study Of A Carbonaceous Gold Ore, James S. Huckaba
A Study Of A Carbonaceous Gold Ore, James S. Huckaba
Bachelors Theses and Reports, 1928 - 1970
The presence of graphite in the ore of the Missouri-McKee Mine has made its treatment by the methods now used quite unsatisfactory. The study was undertaken to develop a new flow sheet which would give a high recovery and yet be economical enough to handle low grade material.
Studies On The Quantitative Analysis Of Rhenium And Its Occurrence In The Products Of Molybdenite Processing, Walter Keith Dean
Studies On The Quantitative Analysis Of Rhenium And Its Occurrence In The Products Of Molybdenite Processing, Walter Keith Dean
Masters Theses
"There is at the present time no commercially developed source of the metal rhenium in the United States. Since this metal is known to exist in molybdenite, it was felt that a study of the products of the metallurgical processing of this mineral might reveal a source of rhenium that could e developed. The Climax Molybdenum Co. provided a number of samples from their smelter at Langloth, Pennsylvania. Although an improved method for the quantitative estimation of rhenium was recently published, its accuracy was not high and the procedure exacting and time-consuming. These combined factors led to the selection of …
The Preparation And Properties Of Some 1-Alkyl-Cyclopentanols And Their Derivatives., Crawford Reid Mclellan
The Preparation And Properties Of Some 1-Alkyl-Cyclopentanols And Their Derivatives., Crawford Reid Mclellan
LSU Historical Dissertations and Theses
No abstract provided.
A Biochemical Study Of The Egg Yolk Discolorization Produced By Feeding Hens Cottonseed Meal., Albert Donald Swensen
A Biochemical Study Of The Egg Yolk Discolorization Produced By Feeding Hens Cottonseed Meal., Albert Donald Swensen
LSU Historical Dissertations and Theses
No abstract provided.
The Removal Of Chlorides And Sulfates By Synthetic Resins., Lucille Grace Boudreaux
The Removal Of Chlorides And Sulfates By Synthetic Resins., Lucille Grace Boudreaux
LSU Historical Dissertations and Theses
No abstract provided.
Geology Of Holmes And Washington Counties, Florida., Robert O. Vernon
Geology Of Holmes And Washington Counties, Florida., Robert O. Vernon
LSU Historical Dissertations and Theses
No abstract provided.
Conodonts From The Marathon Basin, Brewster County, Texas, Roy William Graves Jr.
Conodonts From The Marathon Basin, Brewster County, Texas, Roy William Graves Jr.
Masters Theses
"Conodonts were discovered in the limestones of the Marathon region in the Big Bend country, Brewster County, Texas, as a result of field work during the summer of 1939. This was not the first known occurrence of these fossils from this region, however, as King earlier mentioned the occurrence of conodonts in siliceous shales of Devonian age. The discovery of conodonts in the Ordovician and Pennsylvanian limestones of the area had its inception in the attempt to determine whether the Dimple limestone (lower Pennsylvanian) or Maravillas limestone (upper Ordovician) was involved in a fault that was being mapped. These limestones …
Interpolation For The Median In A Frequency Distribution, Paul Cox
Interpolation For The Median In A Frequency Distribution, Paul Cox
Mathematics & Statistics ETDs
It is the purpose of this study to discuss completely the median of a frequency distribution: first, by showing clearly what a median is; second, by showing the present and possible future applications for the median in the field of mathematical statistics; third, by taking all methods for interpolating for the median which have been advocated in the literature, or which may not have been advocated to date but appear plausible, and discuss these methods as to the way they are used, the plausibility of their use, and the accuracy obtained by their use.
A Geological Report On An Area Five Miles Southeast Of Renova, Montana, And On An Area Seven Miles South Of Jefferson Island, Montana, Herman Neibauer
A Geological Report On An Area Five Miles Southeast Of Renova, Montana, And On An Area Seven Miles South Of Jefferson Island, Montana, Herman Neibauer
Bachelors Theses and Reports, 1928 - 1970
This trip was conducted to give those students working for their respective degrees an excellent opportunity to work under actual field conditions. A total of three weeks was taken to complete the required work. Two weeks were spent in the field gathering data, and making maps, and the last week was spent in the drawing room at the college preparing the final map.
The Unit Plan Versus The Textbook Plan Of Teaching Arithmetic To Seventh And Eighth Grade Pupils, Arthur P. Harvey
The Unit Plan Versus The Textbook Plan Of Teaching Arithmetic To Seventh And Eighth Grade Pupils, Arthur P. Harvey
Master's Theses or Doctor of Nursing Practice
The present day trends in education seem to indicate the desirability of its becoming more and more a socialized education. This trend will no doubt have a more significant bearing on some subjects or studies in the school curriculum than on other subjects. The Kansas public elementary schools have recently adopted a Unit Program in School Studies, which includes history, civics, geography, science, and hygiene in an attempt to contribute better to the socialized idea. This Unit Program, however, does not make direct provision for English, spelling, arithmetic, and penmanship .Naturally, perhaps, comes the question to many teachers of why …
A Study Of The Variation Of Concentration Of Sulfuric Acid As An Electrolyte Between Two Copper Electrodes, Scott S. Tomter
A Study Of The Variation Of Concentration Of Sulfuric Acid As An Electrolyte Between Two Copper Electrodes, Scott S. Tomter
Bachelors’ Theses
When Arrhenius presented his theory of electrolytic dissociation approximately fifty years ago, little did he realize that this theory would prove to be one of the corner stones in the epoch-making developments in chemistry since that time.
Electrochemistry, although still in early development, has risen so greatly in importance that it is now a necessary process in industrial chemistry. It can be estimated fairly that about one-seventh of all manufactured goods are prepared by electrochemical processes directly or indirectly; i.e., in the manufacture of the finished article or in the process of preparing the material.
Interest, herein, is centered on …
The Direct Chlorination Of Benzene And The Preparation Of Alpha And Beta Benzene Hexachlorides, Hubert B. Meloche
The Direct Chlorination Of Benzene And The Preparation Of Alpha And Beta Benzene Hexachlorides, Hubert B. Meloche
Bachelors’ Theses
This research was undertaken in order to study the breaking of the double bonds in a benzene ring by some means other than direct hydrogenation. A study of the literature reveals that the benzene ring has been broken up by chlorination giving hexachlorides of benzene as products of the reaction. But no information regarding the hexachlorides themselves or their method of preparation could be found in the current literature.
A Study Of The Effect Of Various Organic Polar Groupings On Inhibiting The Corrosion Of Steel By Sulfuric Acid, Frank H. Stockhausen
A Study Of The Effect Of Various Organic Polar Groupings On Inhibiting The Corrosion Of Steel By Sulfuric Acid, Frank H. Stockhausen
Bachelors’ Theses
Much has been written on the testing of organic compounds to inhibit the sulfuric acid corrosion in the pickling of steel. For the most part, however, this has been confined to work either on commercial inhibitors which are usually coal tar derivatives of unknown composition, or upon complex amines or sulfonates with little attention paid to comparing the types of polar linkages. The emphasis has been placed on the complexity of molecular structure rather than a thorough analysis of what structure really means in inhibiting action.
The Effects Of Various Salts On The Proteolytic Enzymes In Malt Using Gelatin As A Substrate, John Mandak
The Effects Of Various Salts On The Proteolytic Enzymes In Malt Using Gelatin As A Substrate, John Mandak
Bachelors’ Theses
Because the new viscometric method offers a manner of measuring enzyme activity in a relatively simple manner, it is being applied to the various phases of enzyme study.
The Effect Of Catalyst And Time Upon The Oxidation Of Cotton Seed Oil Air Blown At 115 Degrees C, Joseph Toth
The Effect Of Catalyst And Time Upon The Oxidation Of Cotton Seed Oil Air Blown At 115 Degrees C, Joseph Toth
Bachelors’ Theses
Of late years, the manufacture of oils oxidized by the direct action of air upon them, has greatly increased. ’’Blown oils”, as these are called, render non-drying or semi-drying oils (rape, cotton seed, etc.) more suitable for paint, either directly or as ingredients in paint mixtures. In the case of drying oils (linseed oil, etc.), oxidation changes necessary to produce more rapid absorption of oxygen from the air by the oil, is brought about more rapidly.
This experimentation was suggested by the work of A. Ivanova, who blew air through cotton seed oil at 115°C until required drying properties were …
A Study Of The Electrodeposition Of Chromium Directly On Aluminum, Paul E. Truttschel
A Study Of The Electrodeposition Of Chromium Directly On Aluminum, Paul E. Truttschel
Bachelors’ Theses
The electrolytic deposition of chromium has been an accomplished fact since the early 1920's. Considerable investigation had taken place before this, but it was not until 1920 that any process had been devised to make chromium plating successful commercially. Since then, and especially in the last ten years, this has been a favorite research problem amony[sic] many electrochemists and the results have been most gratifying.
By far the greatest amount of work has been done, however, using metals such as copper, steel, and brass for cathodes, very little information being obtainable concerning the chromium plating of aluminum. Most of the …
Upon The Asymptotic Representation Of Certain Entire Functions In Distant Portions Of The Plane, Abraham Franck
Upon The Asymptotic Representation Of Certain Entire Functions In Distant Portions Of The Plane, Abraham Franck
Mathematics & Statistics ETDs
The purpose of this paper is to study two particular entire functions which satisfy the conditions set up in a theorem due to Newsom. It is to be hoped that this report may be preliminary to the invention of a method which will lend itself toward the solution of certain general problems.
The Evolution Of The Concept Of Axiom, William Fred Jones
The Evolution Of The Concept Of Axiom, William Fred Jones
Mathematics & Statistics ETDs
The field of knowledge known as mathematics is composed of the totality of mathematical systems. A mathematical system consists of a body of propositions known as the axioms. The concern of this paper is with the axioms; in fact, with the change which has taken place during the centuries in the ideas of mathematicians about the axioms.
New Formulae For The Determination Of The Yield Of A Bond, Marvin Roberts
New Formulae For The Determination Of The Yield Of A Bond, Marvin Roberts
Mathematics & Statistics ETDs
A written contract to pay a certain amount of money on a specified redemption date, and to pay equal periodical dividends, is called a bond from a mathematical standpoint. The principal mentioned in the contract is its face value, or par value. The amount redeemed, or the redemption value, is denoted by C, the dividends by D, and the principal by F. A bond is redeemed at a par if C and F are the same, and at a premium if C is greater than F. The divided rate, or bond rate, is the interest rate named in the bond. …
An Algebraic Treatment Of Diophantine Analysis, Anthony Andrew Aucoin
An Algebraic Treatment Of Diophantine Analysis, Anthony Andrew Aucoin
LSU Historical Dissertations and Theses
Diophantlne analysis, while an old subject, is a collection of special problems. The methods used are very varied and those used to solve one problem will not usually solve a second one. It is possible that this condition exists because Diophantlne analysis is usually considered as number theory. While some problems are problems in number theory, a large body of material may be developed by algebraic methods. In this thesis the methods of algebra are exploited. The material of this thesis divides itself into chapters naturally, according to the degree of the equations. Considered in order are quadratics, cubics, quartics, …
The Age-Hardening Of Aluminum With Mgzn2, Sidney E. Worthen
The Age-Hardening Of Aluminum With Mgzn2, Sidney E. Worthen
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis is to investigate the age-hardening of aluminum with magnesium and zinc in such proportions as to conform to the compound MgZn2.
Because of a lack of time and proper equipment, the only property investigated was the hardness as indicated by the Rockwell Superficial Hardness Tester.