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Articles 290461 - 290490 of 294602
Full-Text Articles in Entire DC Network
Maine Pegmatite Mines And Prospects And Associated Minerals, Maine Geological Survey
Maine Pegmatite Mines And Prospects And Associated Minerals, Maine Geological Survey
Maine Collection
Maine Pegmatite Mines and Prospects and Associated Minerals
Minerals Resources Index No.1 - Maine Geological Survey
Department of Development of Industry and Commerce, Augusta, Maine (March 1, 1957).
Contents: Introduction / Acknowledgments / Explanatory Considerations / Selected Bibliography / Pegmatite Mines and Prospects - Alphabetical Index / Pegmatite Mines and Prospects - County-Township Index / Pegmatite Mines and Prospects - Map Index.
Also Includes: Southwestern Maine - Pegmatite Localities and Access Highways / Index Map Showing Mining Districts and Detailed Plate Locations
Structure Of Ch2, Gordon A. Gallup
Structure Of Ch2, Gordon A. Gallup
Gordon Gallup Publications
CH2
Recent mechanism studies have created interest in the question of the spin multiplicity in the molecular fragment CH2. The present note concerns a detailed quantum-mechanical calculation, using the LCAO-MO approximation, undertaken to determine if numerical calculations indicate any preference of one state over the other.
The Chemical Effects Of Gamma Radiation On Halogenated Methanes, Clifford G. Shultz
The Chemical Effects Of Gamma Radiation On Halogenated Methanes, Clifford G. Shultz
Chemistry and Chemical Biology ETDs
The fundamental processes of radiation chemistry and photochemistry are quite parallel, and any consideration of one must include the theory of the other as well. Probably the first work done in photochemistry was that of Stephen Hales on photosynthesis, between 1677 and 1721. This was followed by descriptions of the action of light on silver salts by Schultz, Beccarius, and Scheele. The latter also demonstrated that the action of light on silver chloride varied with the waveleneth of the light. Grotthus, in 1817, stated the first law of photochemistry: Only that light which is absorbed can give rise to a …
Thing We Need To Do, Mel Steen
Thing We Need To Do, Mel Steen
Nebraska Game and Parks Commission: Publications
Nebraska has great need to preserve and develop her wildlife and recreational resources. We have reached that paint in our history when we can no longer rely on yesterday's measures in this field. For our own social and economic good, we must now do things we have hereto considered unnecessary.
We face problems that a few years ago were unknown. The complexity and rapid growth of modern civilization, a civilization that has reached heights never before attained by man, create new and growing problems on the wildlife and recreational front. We have great need to preserve that which we have, …
Final Report: Heat Transport Of The Florida Current., Frank Chew, L. P. Wagner, Robert C. Work
Final Report: Heat Transport Of The Florida Current., Frank Chew, L. P. Wagner, Robert C. Work
RSMAS Technical Reports
Excess solar isolation received in the low latitudes of the earth is lost by way of transfer to the overlying air and by way of bodily movements of warm water out of the region. The Florida Current is one such movement of warm water, characterized by its narrow width, high speed, and high temperature. Because of these characteristics, the influence of the Florida Current on atmospheric processes is of paramount importance.
The Synthesis And Proof Of Structure Of 2, 4-Dimethyl-6-Hydroxynicotinamide, R. E. Buckles, A. Langsjoen, L. Mueller, I. Svendsen
The Synthesis And Proof Of Structure Of 2, 4-Dimethyl-6-Hydroxynicotinamide, R. E. Buckles, A. Langsjoen, L. Mueller, I. Svendsen
Journal of the Minnesota Academy of Science
No abstract provided.
Vinyl Polymers Containing Acrylic Acid-1-C, Courtland L. Agre
Vinyl Polymers Containing Acrylic Acid-1-C, Courtland L. Agre
Journal of the Minnesota Academy of Science
No abstract provided.
Some Recent Advances In Meteorology, Erwin E. John
Some Recent Advances In Meteorology, Erwin E. John
Journal of the Minnesota Academy of Science
No abstract provided.
Applications Of The Silicon Solar Cell In High Altitude Research, James G. Busse
Applications Of The Silicon Solar Cell In High Altitude Research, James G. Busse
Journal of the Minnesota Academy of Science
No abstract provided.
Specificity Of Intermolecular Forces Due To Quantummechanical And Thermal Charge Fluctuations*, Herbert Jehle
Specificity Of Intermolecular Forces Due To Quantummechanical And Thermal Charge Fluctuations*, Herbert Jehle
Department of Physics and Astronomy: Faculty Publications
The preceding note1 (Paper I) developed the theory of the specificity of some intermolecular forces: the forces due to fluctuations of electric charge distribution in and over the interacting molecules. It was found that for a mixture of molecules in a liquid medium these forces cause a rearrangement of the molecules, so that molecules which have the same distribution of oscillator polarizabilities and oscillator orientations over the frequency spectrum tend to associate. This means that like molecules tend to become nearest neighbors. For that reason it was said that there is specific attraction between identical molecules.
Some Remarks On A Paper Of Aronszajn And Panitchpakdi, Melvin Henriksen
Some Remarks On A Paper Of Aronszajn And Panitchpakdi, Melvin Henriksen
All HMC Faculty Publications and Research
In the paper of the title [1], a number of problems are posed. Negative solutions of two of them (Problems 2 and 3) are derived in a straightforward way from a paper of L. Gillman and the present author [2]. Motivation will not be supplied since it is given amply in [1], but enough definitions are given to keep the presentation reasonably self contained.
Biological Indices Of Water Pollution, With Special Reference To Fish Populations, Peter Doudoroff, Charles E. Warren
Biological Indices Of Water Pollution, With Special Reference To Fish Populations, Peter Doudoroff, Charles E. Warren
Other Publications in Wildlife Management
A number of investigators have very recently published discussions having to do with biological indices and biological measures of water pollution (1) (2) (7) (13) (14) (15) (16) (26) (27) (28) (29) (30) (36) (38). Fjerdingstad (12) has discussed some of the pertinent European literature. The fundamental concepts presented by these authors are not original, for the idea that aquatic organisms can be useful "indicators" of environmental conditions, and particularly of the degree of pollution of water with organic wastes, has a long history (12). Because of certain novel features and the relatively wide scope of the studies, and the …
Velocity And Friction Characteristics Of Laminar Viscous Boundry-Layer And Channel Flow Over Surfaces With Ejection Or Suction, E. R. G. Eckert, Patrick L. Donoughe, Betty Jo Moore
Velocity And Friction Characteristics Of Laminar Viscous Boundry-Layer And Channel Flow Over Surfaces With Ejection Or Suction, E. R. G. Eckert, Patrick L. Donoughe, Betty Jo Moore
Armstead Publications and Presentations
National Advisory Committee for Aeronautics Technical Note 4102
Information collected from the referenced literature and supplemented by new solutions is presented on the flow characteristics - velocity field, pressure drop, and friction - for steady, fully developed laminar flow through a duct consisting of two parallel walls, for flow through tubes with circular cross section, and for boundary-layer flow over infinite wedges. It is assumed that the fluid either is ejected through the porous walls into the main flow or is removed from the main flow by suction. The properties of the fluid both in the main flow and in …
A 120 Megacycle Self-Contained High-Frequency Titrimeter, John Kyle Clinkscales Jr.
A 120 Megacycle Self-Contained High-Frequency Titrimeter, John Kyle Clinkscales Jr.
University of the Pacific Theses and Dissertations
The analytical chemist is ever eager to improve and expedite present analytical methods.. In the past ten years considerable interest .has been elicited in the field of high frequency oscillators and their application to analytical chemistry. One of the main reasons for this interest is the uniqueness of the apparatus. No direct contact is made between the measuring instrument and the solution. Credit tor this interest must be given primarily to Jensen and Parrack of Texas A & M University. Their article in 1946 described a simple tuned plate-tuned grid electronic oscillator, operating in the high frequency range. A solution …
Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner
Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner
Bulletin of the University of Nebraska State Museum (1924–2023)
The accurate geologic dating of Pleistocene vertebrate localities which occur outside the glaciated regions has always been difficult. Several new fossil localities in Nebraska now provide data for a better understanding of the paleoecology and faunal evidence of the medial Pleistocene of the Great Plains region.
A fossil quarry, containing the remains of both vertebrates and invertebrates, has been discovered in south-central Nebraska (11/2 miles south and west of Angus in Nuckolls County). The fossils are preserved in Sappa silts in a lime concentration zone (C horizon) of a Yarmouth paleosol. The calcium carbonate appears to have been responsible for …
On Minimal Completely Regular Spaces Associated With A Given Ring Of Continuous Functions, Melvin Henriksen
On Minimal Completely Regular Spaces Associated With A Given Ring Of Continuous Functions, Melvin Henriksen
All HMC Faculty Publications and Research
Let C(X) denote the ring of all continuous real-valued functions on a completely regular space X. If X and Y are completely regular spaces such that one is dense in the other, say X is dense in Y, and every f ε C(X) has a (unique) extension f E C(Y), then C(X) and C(Y) are said to be strictly isomorphic. In a recent paper [2], L. J. Heider asks if it is possible to associate with the completely regular space X a dense subspace μX minimal with respect to the property that C(μX) and C(X) are strictly isomorphic.
A Study In Predicting Success In Algebra, Leslie Milton Graham
A Study In Predicting Success In Algebra, Leslie Milton Graham
Dissertations and Theses @ UNI
Students of Manson High School at Manson, Iowa, select either algebra or general mathematics, subject to the approval of the principal. Some of the students' achievement records are incomplete, thus handicapping the principal in guiding the students to make their choices. As a result, several students have chosen to try algebra and have failed, and sometimes they have become discouraged and have left high school. It occurred to the writer that, if a predicting device could be established to show the student his chances in mathematics, it possibly could spare the pupil's failing in algebra.
Guide To Nebraska Fishing Waters
Guide To Nebraska Fishing Waters
Nebraska Game and Parks Commission: Publications
Part 1 of a Guide to Nebraska Fishing Waters -NEBRASKA'S 'GREAT LAKES'
Part 2 of a Guide to Nebraska Fishing -NEBRASKA'S 'TROUT COUNTRY'
Part 3 of a Guide to Nebraska Fishing -FISHING IN THE SANDHILLS
Part 4 of a Guide to Nebraska Fishing -Fishing NE Nebraska
Part 5 of a Guide to Nebraska Fishing -Fishing in Southeastern Nebraska
Nebraska State Parks, Recreation and Public Use Areas
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Game and Parks Commission: Publications
IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Game and Parks Commission: Publications
IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …
Porosity-Permeability Characteristics Of Dedimentary Rocks, W. D. Lacabanne
Porosity-Permeability Characteristics Of Dedimentary Rocks, W. D. Lacabanne
Journal of the Minnesota Academy of Science
No abstract provided.
The Use Of P In Preparing Radioautographs, R. B. Hastings, James Dimond
The Use Of P In Preparing Radioautographs, R. B. Hastings, James Dimond
Journal of the Minnesota Academy of Science
No abstract provided.
Test 632: John Deere 830 Diesel, Nebraska Tractor Test Lab
Test 632: John Deere 830 Diesel, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
The Phosphoria Formation Of The Northeastern Big Horn Basin, Wyoming, William A. Beatty
The Phosphoria Formation Of The Northeastern Big Horn Basin, Wyoming, William A. Beatty
Masters Theses
"Purpose and Scope. — The Phosphoria formation of the northern Rocky Mountains of the United States has received considerable attention from geologists because of its important reserves of phosphate and petroleum. In the Big Horn Basin of Wyoming, however, still more work is needed to compile the information necessary for a complete understanding of the facies changes exhibited by this formation.
The purpose of this paper is two-fold: first to present a description of the lithology and the paleontology of the Phosphoria formation in the northeast part of the Big Horn Basin, and secondly to show the stratigraphic relationship of …
Internal Friction In Manganese Copper Alloys, William Paul Dixon
Internal Friction In Manganese Copper Alloys, William Paul Dixon
Masters Theses
"The study of the physical properties of the manganese-copper alloys is an intriguing one. These alloys show promise of usefulness in instances in which high internal friction is needed to reduce the noise and vibrational stresses at resonant frequencies of a part of a machine. The purpose of this study has been to learn more about the internal friction of manganese-copper alloys as a function of temperature, stress amplitude, frequency, time, and past history of the specimen. From this information the mechanism for absorption of vibrational energy is proposed, or at least some progress has been made toward its determination. …
The Value Of Including Chemistry Content In The Study Of High School Biology, Ramon Duane Buckley
The Value Of Including Chemistry Content In The Study Of High School Biology, Ramon Duane Buckley
Dissertations and Theses @ UNI
The purpose was to evaluate the effect of including some definite chemistry content in high school biology. This evaluation was made by comparing outcomes of instruction in two different groups of a high school biology course. The two groups were equated in terms of the intelligence quotients, the sex, and the previous achievement in biology of the class members. The comparative gains in factual knowledge were measured by means of an evaluation test. The comparative gains in appreciations and interests in biology were measured with a questionnaire.
Effect Of Environment On The Percentage Of Summerwood And Specific Gravity Of Slash Pine, Philip R. Larson
Effect Of Environment On The Percentage Of Summerwood And Specific Gravity Of Slash Pine, Philip R. Larson
Yale School of the Environment Bulletin Series
No abstract provided.
Test 633: Oliver Oc-15, Nebraska Tractor Test Lab
Test 633: Oliver Oc-15, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 613: Case 311 Gasoline, Nebraska Tractor Test Lab
Test 613: Case 311 Gasoline, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT:
TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.
This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker, point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.
BELT HORSEPOWER TESTS
TEST B: The throttle …
Thermal Reaction Of Hydrogen And Oxygen In Small Bore Tubes, Shib Charan Chattoraj
Thermal Reaction Of Hydrogen And Oxygen In Small Bore Tubes, Shib Charan Chattoraj
Theses and Dissertations
The thermal reaction of hydrogen and oxygen has been investigated from the standpoint of the important intermediate hydrogen peroxide in the region between 620-720 degrees centigrade in small bore Pyrex and steel tubes. The minimum explosion-temperatures with different flow rates and compositions of the mixture have been determined. They have been found to vary with the composition and flow rate of the mixture. The minimum explosion temperature is also found to vary with the condition of the reaction tube surface. The yield of hydrogen peroxide has been determined as a function of temperature, contact time, composition of feed stream, and …