Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (25784)
- Western Michigan University (20684)
- University of Kentucky (14837)
- TÜBİTAK (10720)
- Singapore Management University (9364)
-
- Utah State University (7946)
- Old Dominion University (7330)
- Missouri University of Science and Technology (7295)
- Portland State University (4188)
- University of South Florida (4143)
- Wright State University (3960)
- University of Nevada, Las Vegas (3927)
- China Simulation Federation (3880)
- City University of New York (CUNY) (3750)
- Louisiana State University (3661)
- Brigham Young University (3435)
- University of Texas Rio Grande Valley (3156)
- Chulalongkorn University (3121)
- University of Arkansas, Fayetteville (3109)
- Air Force Institute of Technology (3073)
- Department of Primary Industries and Regional Development, Western Australia (2921)
- Purdue University (2869)
- Claremont Colleges (2860)
- California Polytechnic State University, San Luis Obispo (2725)
- University of Texas at El Paso (2633)
- Montana Tech Library (2407)
- Chinese Chemical Society | Xiamen University (2392)
- Technological University Dublin (2385)
- University of South Carolina (2379)
- Wayne State University (2316)
- Keyword
-
- Machine learning (2195)
- Western Australia (1954)
- Climate change (1652)
- Mathematics (1412)
- Deep learning (1187)
-
- Sustainability (1182)
- Chemistry (1130)
- Artificial intelligence (1112)
- Machine Learning (1084)
- Physics (1035)
- Groundwater (976)
- Geology (973)
- Water quality (902)
- Computer Science (823)
- United States (810)
- Simulation (790)
- Nebraska (774)
- Education (744)
- Remote sensing (715)
- Agriculture (703)
- Climate (702)
- Grains and field crops (698)
- Water (696)
- Security (687)
- Statistics (687)
- Optimization (666)
- Conservation (647)
- Environment (624)
- Humans (603)
- Algorithms (586)
- Publication Year
-
- 2026 (8610)
- 2025 (12114)
- 2024 (14084)
- 2023 (14109)
- 2022 (18213)
-
- 2021 (27726)
- 2020 (14803)
- 2019 (13025)
- 2018 (11785)
- 2017 (11098)
- 2016 (10864)
- 2015 (9572)
- 2014 (9796)
- 2013 (8919)
- 2012 (8509)
- 2011 (7752)
- 2010 (6939)
- 2009 (6346)
- 2008 (5869)
- 2007 (5727)
- 2006 (4902)
- 2005 (4757)
- 2004 (3871)
- 2003 (3323)
- 2002 (3021)
- 2001 (2762)
- 2000 (2644)
- 1999 (2343)
- 1998 (2337)
- 1997 (2183)
- Publication
-
- Legacy Scout Tickets from Pure Oil Company (11044)
- IGC Proceedings (1977-2023) (9261)
- Theses and Dissertations (8773)
- Research Collection School Of Computing and Information Systems (8526)
- Thin Sections (6677)
-
- Faculty Publications (4078)
- Journal of System Simulation (3880)
- Electronic Theses and Dissertations (3531)
- Nebraska Tractor Tests (3402)
- Turkish Journal of Electrical Engineering and Computer Sciences (3106)
- Turkish Journal of Chemistry (2720)
- Turkish Journal of Mathematics (2595)
- Journal of Electrochemistry (2392)
- Physics Faculty Publications (2166)
- Masters Theses (2076)
- Dissertations (2035)
- Physics Faculty Research & Creative Works (1959)
- Silver Bow Creek/Butte Area Superfund Site (1881)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (1876)
- USF Tampa Graduate Theses and Dissertations (1834)
- Coal Geology & Exploration (1822)
- School of Natural Resources: Faculty Publications (1735)
- Department of Computer Science Technical Reports (1721)
- United States Department of Agriculture Wildlife Services: Staff Publications (1622)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (1435)
- Publications and Research (1408)
- LSU Doctoral Dissertations (1390)
- Turkish Journal of Physics (1382)
- Open Access Theses & Dissertations (1380)
- Publications (1378)
- Publication Type
Articles 291841 - 291870 of 293802
Full-Text Articles in Entire DC Network
The Solution Of Ordinary & Partial Differential Equations In Series, Kenneth Wood
The Solution Of Ordinary & Partial Differential Equations In Series, Kenneth Wood
Masters Theses & Specialist Projects
The purpose of this thesis is to compile and discuss some of the methods of solution of both ordinary and partial differential equations, whose solutions are expressible in the form of a series. An exhaustive study is not attempted. A few of the methods of most common occurrence for finding solutions in series are discussed and examples illustrating these methods are presented.
A Comparative Pollution Study Of The Domestic Water Supply Of Warren County, Kentucky, Glenn Scott
A Comparative Pollution Study Of The Domestic Water Supply Of Warren County, Kentucky, Glenn Scott
Masters Theses & Specialist Projects
The domestic water supply of Warren County, outside of the city of Bowling Green, is obtained from deep wells and springs. The county is about evenly divided into a southern section of cavernous limestone and a northern section of mixed sandstone and limestone formations.
The wells of the southern cavernous limestone region receive water from unfiltered underground streams and lakes. Most of the wells of the northern region are drilled in sandstone and the water, in a majority of cases, is filtered through porous sandstone and shale.
The purpose of this study was to make a comparative pollution study of …
Analysis Of Errors Made By 717 Collge Students In Arithmetic, O.D. Barnes
Analysis Of Errors Made By 717 Collge Students In Arithmetic, O.D. Barnes
Masters Theses & Specialist Projects
During the greater part of the elementary-school training of the average American child he receives a large amount of instruction and drill in arithmetic. In the high school he suddenly drops arithmetic except as he maintains practices in courses of science or high school mathematics and except as the transactions of every day life involve arithmetic. In college the individual may suddenly find that the amount of arithmetical knowledge required is not small as in physics, chemistry or certain commercial courses. Evidence exists to indicate that students doing poor work in these courses are often found deficient in arithmetic.
The Conchoid, James J. Blask
The Conchoid, James J. Blask
Bachelors’ Theses
The purpose of this thesis is to present 1n a simple and compact manner the conchoid, and to show its use in solving certain mathematical problems. Some of the better known curves related to the conchoid will also be discussed.
A Metallurgical Study Of Gold Ores, Alfred A. Bloom
A Metallurgical Study Of Gold Ores, Alfred A. Bloom
Bachelors Theses and Reports, 1928 - 1970
Gold is widely distributed in the earth's crust in small quantities. Gold is found in nature in two forms; the element itself and the compound gold telluride. In all cases, silver in some proportion is an alloying constituent.
Attempted Proofs Of The Differentiation Of Magmas By Syntexis, Clifford Wendel
Attempted Proofs Of The Differentiation Of Magmas By Syntexis, Clifford Wendel
Bachelors Theses and Reports, 1928 - 1970
This investigation was an effort to obtain proof of the much disputed principle that most of the observed magnetic differentiations have been due to the assimilation, or syntexis, of the intruded country rocks.
The Effect Of Sodium Fluoride On The Bright Plating Range Of Chromium, Ernst Curschmann
The Effect Of Sodium Fluoride On The Bright Plating Range Of Chromium, Ernst Curschmann
Bachelors’ Theses
Chromium is used very extensively at the present time as an exterior plate over other metals. It has found favor not only because of its brilliant blue, untarnishable lustre, but also because of its extreme hardness. The great increase in the demand for chromium plate in recent years, rapidly relegating nickel plate into the background, has resulted in increased research and experimentation .in the field of chromium plating, in the endeavor to provide a lasting, beautiful plate at a minimum of expense.
Present chromium plating baths containing sulphuric acid as the active agent of deposition leave much to be desired …
E, Doyle K. Brooks
E, Doyle K. Brooks
Master's Theses or Doctor of Nursing Practice
The meteoric splendor of the transcendental constant e is an intriguing mystery. It rises unexpectedly from nowhere, brilliantly illuminates some obscure mathematical concept, points to its solution, and abruptly fades into oblivion. Its unheralded visitation leaves the student wiser but wondering, tantalized by its omnipotence in apparently unrelated fields. Ever since his first introduction to e in elementary logarithms it has seemed to the writer that all the authors of textbooks are in a conspiracy to defeat any real knowledge of e. They say "2.71828… , called e, is the base of Naperian logarithms." Why? "The derivative of eX is …
Electrolytic Recovery Of Copper And Zinc From Brasses, Thomas Barker Jr.
Electrolytic Recovery Of Copper And Zinc From Brasses, Thomas Barker Jr.
Bachelors Theses and Reports, 1928 - 1970
Reclaimed metals, or secondary metals, are becoming of great importance in the metal industries of the world. Secondary metals are an important factor in production. The increase in the secondary production of copper is due to many factors. One of these may be its permenance, that is, the metal does not corrode very readily. Another reason for increase in production is the high price paid for it.
The General Geology Of The Cardwell Mining District, Clyde Congdon
The General Geology Of The Cardwell Mining District, Clyde Congdon
Bachelors Theses and Reports, 1928 - 1970
The Cardwell Mining District is part of the greater Whitehall Mining District. The district is situated about four miles to the east and northeast of Whitehall in the southern end of the Bull Mountains which are near the Continental Divide. The first reported production was in 1896 after the discovery of the Mayflower Mine. Mining has been carried on intermittently and on a small scale since that time.
The Electrodeposition Of Manganese From Certain Aqueous Solutions, Fred J. Hill
The Electrodeposition Of Manganese From Certain Aqueous Solutions, Fred J. Hill
Bachelors Theses and Reports, 1928 - 1970
Careful examination of the literature available shows that the electrodeposition of manganese from various aqueous solutions has not been attempted to any great extent. The best method for the electrodeposition of pure manganese consists in the electrolysis of a solution containing manganous and ammonium sulphates.
Conductivity Applications, Henry W. Koch
Conductivity Applications, Henry W. Koch
Bachelors’ Theses
Since the introduction of Arrhenius’ theory of electrolytic dissociation more than forty years ago, many applications of the chemistry of electrolytes have been formulated. Of the many uses of conductance measurements, conductivity titrations have lately assumed the theoretical and technical importance which they rightfully should have. Conductance measurements enjoy prominence both in practice and in research, and the almost unlimited field provides a wealth of material for the ardent electrochemist. There is no doubt that many of the old analytic methods will soon be largely supplanted by this newer procedure which even at the present finds such varied usefulness.
The Staining Effect Of The Hydrochloric Acid-Chromate Trioxide Solution On The Minerals Of The Chalcocite-Stibnite-Galena Ternary System., John W. Johns Jr.
The Staining Effect Of The Hydrochloric Acid-Chromate Trioxide Solution On The Minerals Of The Chalcocite-Stibnite-Galena Ternary System., John W. Johns Jr.
Bachelors Theses and Reports, 1928 - 1970
The object of this work has been to devise a method by which the different phases in the chalcocite-stibnite-galena ternary system may be identified. As the mineralogists have no precise methods for the identification of these phases, a hydrochloric acid-chromate trioxide staining solution was employed.
The Separation Of Tungstic Oxide From Scheelite And Its Subsequent Reduction With Hydrogen, Dave Jones
The Separation Of Tungstic Oxide From Scheelite And Its Subsequent Reduction With Hydrogen, Dave Jones
Bachelors Theses and Reports, 1928 - 1970
The largest known deposits of tungsten ores occur in the continuation of the Indo-Malayan Mountains, which extends through Burma, Malaya, China, Japan, and Chosen. Production of tungsten concentrates was started in 1910 in Burma, and in 1911 this country was the world's largest producer. China produced but little until 1916, but has since supplied over fifty per cent of the world's requirements.
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Bachelors Theses and Reports, 1928 - 1970
A microscopic investigation of the Montana silver minerals was conducted. This study consisted mainly of identifying the silver and silver-bearing minerals and of determining their paragenetic relationships. The increasing amount of research in which the reflecting microscope is employed is evidence of the great value of this method of approach in the solution of problems of paragenesis of the opaque minerals.
The Geology Of Lost Creek Canyon With Special Reference To Igneous Activity, John Kolesar
The Geology Of Lost Creek Canyon With Special Reference To Igneous Activity, John Kolesar
Bachelors Theses and Reports, 1928 - 1970
This investigation was undertaken primarily as a problem in geologic mapping, coupled with a study of stratigraphy, glaciation, igneous phenomena, and structure. The area is admirably suited to a study of geology and geologic events. Because it is small in extent, the area was studied in some detail during the time which was devoted to field work. The record of igneous activity of past geological ages is remarkably well exposed, since Lost Creek Canyon was carved through the roof of a stock or batholith by the glaciers of the Pleistocene epoch.
Occurrence And Origin Of Placer Gold In Montana, John K. Halse
Occurrence And Origin Of Placer Gold In Montana, John K. Halse
Bachelors Theses and Reports, 1928 - 1970
From time immemorial man has used gold as a medium of exchange, a measure of value, as jewelry and for ornamentation. Placer gold has led directly or indirectly to the settlement of lands, California and Alaska being the two best known examples. It has led the way to the discovery of other important mineral wealth, the discovery of the copper and silver deposits at Butte, Montana and the discovery of the silver deposits at Cripple Creek, Colorado being two good examples.
A Preliminary Study Of The Ostracoda Of The Big Snowy Group, Mississippian, Of Montana., John C. Rabbitt
A Preliminary Study Of The Ostracoda Of The Big Snowy Group, Mississippian, Of Montana., John C. Rabbitt
Bachelors Theses and Reports, 1928 - 1970
In the field, samples were taken vertically and horizontally along the various outcrops in different sections of central and south-central Montana. At important localities the samples were taken about every half-foot vertically; in other sections they were taken every few feet.
An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr.
An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr.
Bachelors Theses and Reports, 1928 - 1970
Although there is no standardized list of alloys, most investigators have, to avoid confusion, concurred in at least grouping the metals under several general heads. Precious metals: gold, silver and the platinum group; the light metals: aluminum and magnesium; the non-ferrous metals (excluding all steels and iron-base alloys); and the antifriction metals.
Siliceous Sponge Spicules Of The Quadrant Formation From Montana., Lester Zeihen
Siliceous Sponge Spicules Of The Quadrant Formation From Montana., Lester Zeihen
Bachelors Theses and Reports, 1928 - 1970
A sponge spicule is a siliceous or calcareous individual or group of rays which form a framework for the sponge. Sponge spicules are very delicate and easily broken. The methods used in obtaining micro-fossils vary considerably with the type of material from which they are to be recovered and the frailness of the fossil obtained.
The Monadnock Volume 9, Number 2, May 1935, Clark University Geographical Society
The Monadnock Volume 9, Number 2, May 1935, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 9, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
The Preparation Of Calcium And Barium Gluconate, Ronald Anthony Plzak
The Preparation Of Calcium And Barium Gluconate, Ronald Anthony Plzak
Bachelors’ Theses
The privilege of working on this subject is one which the author has sincerely appreciated, as it has given him the opportunity of incorporating many of the more recent contributions along the line of oxidizing aldose sugars. In reviewing these contributions, he has abstained from conveying an impression of finality and has attempted to show the many possibilities which the free sugar acids offer for the future. The experience of the last few years has proved that even long-cherished conceptions and apparently well-established facts may at any time undergo drastic revision. For this reason, the author has referred directly to …
Solution Of The Equation: Y1 = (Ax2 + Bx + C)N (Kx + L), Edith Florence Mayer
Solution Of The Equation: Y1 = (Ax2 + Bx + C)N (Kx + L), Edith Florence Mayer
Bachelors’ Theses
The general solution of an ordinary differential equation of the nth order is one that involves n arbitrary constants* Although the general solution may assume a variety of forms. all of these give the same relation among the variables, so that actually there is only one general solution.
An Investigation Of The Methods Used In The Preparation Of Acid Amides, Everett Stats
An Investigation Of The Methods Used In The Preparation Of Acid Amides, Everett Stats
Bachelors’ Theses
Much work has been done on the preparation of acid amides, but there are few sources where one may find the methods tabulated. It has been the purpose of this Thesis, therefore, to try out various methods and conditions for the preparation of the aliphatic and aromatic amides and to record them.
A Comparison Of The Caffeine Content Of Various Coffees, Emil J. Petrusek
A Comparison Of The Caffeine Content Of Various Coffees, Emil J. Petrusek
Bachelors’ Theses
Coffee must be rated as one of the most important commodities in the commercial world due to the statistics or output and consumption. There are various brands and kinds of coffee produced by the different growers and roasters. Now to sell the brands, the various concerns base their advertising upon the flavor and price of the coffee. It is a fact that the flavor of coffee is in some way affected by the caffeine present. One popular brand is advertised as decaffeinated, that is, the caffeine has been removed. Confronted with these facts, it occurred to the author to test …
The Extraction Of Tantalum And Columbium From Tantalite, Stanley P. Wisniewski
The Extraction Of Tantalum And Columbium From Tantalite, Stanley P. Wisniewski
Bachelors’ Theses
In the summer of 1932, the Milwaukee Public Museum, sent an expedition to the Bad Lands and Black Hills of South Dakota, under the direction of Dr. Ira Edwards, Curator of Geology in that institution. It was at this time that the author, a member of this group, while studying the pegmatites of the Black Hills, became interested in the tantalum-columbium bearing minerals of that region, namely tantalite and columbite. At that time the writer made a detailed mineralogical study of these two minerals, as well as a thorough investigation of their occurrence in that region. In the fall of …
Sensitivity Of Curcumin As An Organic Reagent In Testing For Beryllium, James W. Bookhamer
Sensitivity Of Curcumin As An Organic Reagent In Testing For Beryllium, James W. Bookhamer
Bachelors’ Theses
For many years the analytical chemist avoided by design or more probably by accident the general use of organic chemicals in his work. Some few of them he accepted as a matter of course, and perhaps without much thought of their organic nature. In qualitative analysis he used chloroform as a solvent in testing for bromine and iodine. A few indicators were in common use, but organic chemicals were used but little in analytical work. It was not until the twentieth century that their use in analytical procedures received any worthwhile attention. Since then they have rapidly come to the …
The Purification Of Coffee Wax By Means Of A Special Extractor Followed By A Dialysis Process, John Dobrojevic
The Purification Of Coffee Wax By Means Of A Special Extractor Followed By A Dialysis Process, John Dobrojevic
Bachelors’ Theses
This work was performed with the intention of devising a method where-by true wax could be isolated from a conglomerated mixture called coffee wax.
The Grignard Reagents: Their Preparation, Flora Cooke
The Grignard Reagents: Their Preparation, Flora Cooke
Chemistry Honors Papers
This 14 page thesis examines various methods for the preparation of the Grignard reagent.
Chemical And Physical Considerations Of Carbohydrates, Flora Cooke
Chemical And Physical Considerations Of Carbohydrates, Flora Cooke
Chemistry Honors Papers
This 13 page thesis examines chemical and physical considerations of carbohydrates.