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Articles 68221 - 68250 of 69377
Full-Text Articles in Entire DC Network
Management Of The Great Salt Lake: A Research Plan And Strategy, Craig T. Jones, Calvin G. Clyde, J. Paul Riley
Management Of The Great Salt Lake: A Research Plan And Strategy, Craig T. Jones, Calvin G. Clyde, J. Paul Riley
Reports
The primary purposes of this report are to indicate the following two research items in connection with the management of the water resource system of the Great Salt Lake:\ 1. Research needs and priorities. 2. A research coordination strategy. Research needs are identified by the report in terms of (1) various management, or use, categories (such as lake industries), and (2) the need to understand the physical characteristics of the lake system itself. The research needs are identified in each category as information (including data) or understanding gaps, in cases where there seems to be sufficient information, a research need …
Photoconductivity In Bone And Tendon, Robert G. Fuller, A. A. Marino, R. O. Becker
Photoconductivity In Bone And Tendon, Robert G. Fuller, A. A. Marino, R. O. Becker
Robert G. Fuller Publications
Ultraviolet light can be used to stimulate electrical current flow in bone and tendon. This stimulated photocurrent is directional. In tendon the photocurrent parallel to the fibrils is greater than the photocurrent perpendicular to the fibrils. In bone, the longitudinal photocurrent is less than the transverse photocurrent.
Interactive Statistical Computing For Undergraduate Liberal Arts Education, Becky Lindquist, William L. Carlson, Ralph Bjork
Interactive Statistical Computing For Undergraduate Liberal Arts Education, Becky Lindquist, William L. Carlson, Ralph Bjork
Journal of the Minnesota Academy of Science
St. Olaf College at Northfield, Minnesota, has an Interactive Statistical Analysis System for classroom research usage. SODAS (St. Olaf Data Analysis System) operates on a Minicomputer Time Sharing System (DEC PDP / 1140 has 15 terminals, 64K of core, and 3 disks). SODAS is used extensively by students for study of statistics, course projects, and research. In addition, it is used for faculty research . This system has increased student interest by involving them in realistic problems. In addition, student sophistication in problem solving has increased. The paper discusses the system design, the philosophy of interactive computing, and the pedagogical …
Surface Electromagnetic Waves With Damping. I. Isotropic Media, G. S. Kovener, Ralph William Alexander, Robert John Bell
Surface Electromagnetic Waves With Damping. I. Isotropic Media, G. S. Kovener, Ralph William Alexander, Robert John Bell
Physics Faculty Research & Creative Works
Surface-Electromagnetic-Wave Dispersion Curves Are Usually Calculated using a Simple Equation Derived from Maxwell's Equations and Boundary Conditions. When Complex Dielectric Functions Are Used for the Two Media, the Component of the Propagation Vector Along the Surface, Kx, Becomes Infinite as the Frequency Approaches the Surface Polariton Frequency Ωs If Ω is Considered Complex and Kx is Real. on the Other Hand, If Kx is Considered Complex and Ω Real, the Dispersion Curves Bend Back Toward Smaller Kx as Ω Approaches Ωs. We Have Previously Demonstrated that Both Types of Behavior Can Be Obtained from Attenuated-Total-Reflection Measurements of Silver. We Now …
Individual Residential Wastewater Treatment, Robert H. Mcneal
Individual Residential Wastewater Treatment, Robert H. Mcneal
Retrospective Theses and Dissertations
No abstract provided.
Interactive Pace Approach To Learning In Physics : Method And Materials, Mario Amézquita
Interactive Pace Approach To Learning In Physics : Method And Materials, Mario Amézquita
University of the Pacific Theses and Dissertations
This study has the following general objectives: first, to present in detail the techniques that the author has developed and used in designed the course and the final materials produced for am introductory physics course in Mechanics; second, to state and examine the important blended ingredients used to get a new strategy for teaching-learning in which and individualized pace together with a group interaction is used; third, to analyze a combination of structural and operational course where concept, structure formation, and problem solving are emphasized.
1st International Symposium On Groundwater Ecology. Introduction: Sense And Course Of The Meeting, Siegfried Husmann
1st International Symposium On Groundwater Ecology. Introduction: Sense And Course Of The Meeting, Siegfried Husmann
International Journal of Speleology
Short introduction on the meeting on Groundwater Ecology held at Shlitz (Germany) in 1975.
The Distribution Of The Fauna In The Interstitial Habitats Of Riverine Sediments Of The Danube And The Piesting (Austria), Dan L. Danielopol
The Distribution Of The Fauna In The Interstitial Habitats Of Riverine Sediments Of The Danube And The Piesting (Austria), Dan L. Danielopol
International Journal of Speleology
The interstitial fauna living in the riverine sediments of the Danube and Piesting have been investigated in Lower Austria. The nematodes, oligochaetes and cyclopoids are the most abundant groups (they represent up to 80% of the total fauna). The harpacticoids, the insect larvae, the isopods, the amphipods, the cladocera and the limnohalacarids are poorly represented (generally under 20% of the total fauna). The absence of hydrachnellids is striking. The vertical distribution of the interstitial fauna shows for several groups i.e. limnohalacarids, ostracods, isopods, harpacticoids, that the epigean species are quantitatively better represented in the upper sediment layers instead of the …
La Léthargie Chez Les Chiroptères Cavernicoles D'Afrique Centrale, Michel Anciaux De Faveaux
La Léthargie Chez Les Chiroptères Cavernicoles D'Afrique Centrale, Michel Anciaux De Faveaux
International Journal of Speleology
From his personal research undertaken in the subterranean field (natural and artificial cavities) in Shaba (ex-Katanga, in S.E. Zaire) and Rwanda, the author briefly defines the macroclimate of the prospected regions as well as the microclimate of the subterranean habitat (humidity and temperature). A reversible hypothermia has been noticed in the dry season only (from May till August) in eleven species of troglophile Chiroptera belonging to the following families: Rhinolophidae (7 species of Rhinolophus), Hipposideridae (only Hipposideros ruber) and Vespertilionidae (Miniopterus inflatus rufus, Miniopterus schreibersi arenarius & M.s. natalensis, Myotis tricolor). No sign of lethargy has …
H I In Early-Type Galaxies. Ii. Mass Loss And Galactic Winds, S. M. Faber, J. S. Gallagher
H I In Early-Type Galaxies. Ii. Mass Loss And Galactic Winds, S. M. Faber, J. S. Gallagher
Department of Physics and Astronomy: Faculty Publications
Implications of observed upper limits to the neutral hydrogen content of E and SO galaxies from Paper I are discussed. If gas shed by dying stars is completely retained by these galaxies and exists as H I, these upper limits will be exceeded in only 109 yr for E's and SO's and in only 2 x 108 yr for NGC 4472. Evidently, gas either is hidden in some undetectable form or is removed from the interstellar medium completely.
Ab Initio Investigations Of The Potential Curves Of The Ground State Of The Hydrogen Molecule And Of Several States Of The Lithium Molecule, Mark L. Olson
Graduate Dissertations and Theses
Abstract for this work is available in the additional materials.
Geology Of The Zacapa Quadrangle And Vicinity, Guatemala, Central America, David Philip Schwartz
Geology Of The Zacapa Quadrangle And Vicinity, Guatemala, Central America, David Philip Schwartz
Graduate Dissertations and Theses
Geologic mapping in the Zacapa quadrangle and southern Rio Hondo quadrangle has shown that the Las Ovejas Complex, of probable pre-Early Pennsylvanian age and the oldest rock south of the Motagua fault zone, is a sequence of interlayered schist, marble, amphibolite, gneiss and associated penetratively deformed diorite, tonalite and granodiorite. Metavolcanic, metavolcaniclastic, and metasedimentary rock includes original basalt, dacitic and rhyodacitic tuff, minor andesite, limestone and pelite. Emplacement of diorite coincided with regional prograde metamorphism to middle and upper amphibolite facies. Hornblende, diopside, staurolite, sillimanite, and K-feldspar formed in rock of appropriate bulk composition. In the Zacapa quadrangle, metamorphic grade …
Colorado River Basin Modeling Studies: Proceedings Of A Seminar Held At Utah State University Logan , Utah July 16-18, 1975, Calvin G. Clyde, Donna H. Falkenborg, J. Paul Riley
Colorado River Basin Modeling Studies: Proceedings Of A Seminar Held At Utah State University Logan , Utah July 16-18, 1975, Calvin G. Clyde, Donna H. Falkenborg, J. Paul Riley
Reports
Preface: Computer modeling is an important and valuable tool for water resources planning and management. In recent years many different modeling approaches and techniques have been developed. Some have been applied in the Colorado River Basin. A brief and incomplete search showed over fifty reports on modeling in the Colorado River Basin alone. The main motivation for this Seminar was the indication that (1) much duplication of effort is occuring among Colorado River modeling studies due to lack of information and (2) much of the knowledge now available on modeling is not being effectively applied to real problems. The overall …
Hydrologic Impact Of Burning And Grazing On A Chained Pinyon-Juniper Site In Southeastern Utah, Gerald F. Gifford, John C. Buckhouse, Frank E. Busby
Hydrologic Impact Of Burning And Grazing On A Chained Pinyon-Juniper Site In Southeastern Utah, Gerald F. Gifford, John C. Buckhouse, Frank E. Busby
Reports
No abstract provided.
Some Applications Of Lie Transformation Groups To Classical Hamiltonian Dynamics, Donald Robert Peterson
Some Applications Of Lie Transformation Groups To Classical Hamiltonian Dynamics, Donald Robert Peterson
University of the Pacific Theses and Dissertations
Recent work has established that a group theoretical viewpoint of completely integrable dynamical systems with N degrees of freedom yields an algorithm that provides new information concerning the symmetry transformation group structure of this class of dynamical systems. The work presented here rests heavily on the results presented in reference and it is recommended that the reader consult this reference for a more rigorous discussion of the results given in this thesis.
An Analysis Of Conservation Authority Decision Making As To The Acquisition And Development Of Open Space Resources, James C. Johnston
An Analysis Of Conservation Authority Decision Making As To The Acquisition And Development Of Open Space Resources, James C. Johnston
Theses and Dissertations (Comprehensive)
No abstract provided.
The Internal Chemical Shift - A Key To Bonding In Aromatic Molecules. 2. Substituent Effects On The Carbon-13 Magnetic Resonance Spectra Of The 1,4-Disubstituted Benzenes, Donald W. Beistel, W. Dan Edwards
The Internal Chemical Shift - A Key To Bonding In Aromatic Molecules. 2. Substituent Effects On The Carbon-13 Magnetic Resonance Spectra Of The 1,4-Disubstituted Benzenes, Donald W. Beistel, W. Dan Edwards
Chemistry Faculty Research & Creative Works
Carbon-13 magnetic resonance shifts were determined for six families of 1,4-disubstituted benzenes. Linear least-squares correlations between the internal shifts of the families suggest an additivity relationship for 13C substituent effects at all four nonidentical ring carbons and at the α position when one of the substituents has a central carbon. The correlation of 1H and 13C shifts for these compounds is also linear, implying that the additivity relationships derived in a previous 1H study can be generalized to 13C.
Part I. Thermodynamic Acidities Of Substituted Phenylacetylenes. Part Ii. Mercury Accumulation In Trout Of Southern Missouri, Eric T. Lloyd
Part I. Thermodynamic Acidities Of Substituted Phenylacetylenes. Part Ii. Mercury Accumulation In Trout Of Southern Missouri, Eric T. Lloyd
Masters Theses
"PART I: THERMODYNAMIC ACIDITIES OF SUBSTITUTED PHENYLACETYLENES The thermodynamic acidities (pKa) of phenylacetylene and several para substituted phenylacetylenes in methanol were determined at 25ºC. These acidity constants were determined using a quenching technique which involves converting the phenylacetylenic anion, present at equilibrium as sodium phenylacetylide, to the tritium labelled carbon acid. By liquid scintillation counting techniques, the concentration of the anion was determined and the pKa of the phenylacetylene compound calculated. The resulting pKa's are: p-nitrophenylacetylene, 17.98, p-bromophenylacetylene, 18.10, p-fluorophenylacetylene, 18.14, phenylacetylene, 18.50, and p-methylphenylacetylene, 18.60. The effect of a substituent in the para position on the relative acidities is …
Geology Of The Western Portion Of The Dogtooth Pluton, Lake Of The Woods Region, Southwestern Ontario, Richard H. Pilatzke
Geology Of The Western Portion Of The Dogtooth Pluton, Lake Of The Woods Region, Southwestern Ontario, Richard H. Pilatzke
Theses and Dissertations
A 10 km2 portion of a subsolvus, syntectonic or posttectonic grano dioritic intrusion located about 16 km east of Kenora, Ontario was extensively sampled for study by petrographic modal analysis and trend surface analysis. The Dogtooth pluton, the main intrusive body sampled, is part of a granitic batholith known as the Dryberry dome, which is interpreted to have been intruded into supracrustal volcanic and sedi mentary rocks about 2480 million years ago during the Kenoran Orogeny. The Longbow pluton, which was also sampled, occurs at the west margin of the Dryberry dome in contact with the supracrustal rocks to the …
The Karst Of Transvaal (South Africa), J. Martini, I. Kavalieris
The Karst Of Transvaal (South Africa), J. Martini, I. Kavalieris
International Journal of Speleology
The Transvaal Karst is a world important example of a Karst developed on a very old dolomite. Its unique character is due to the composition of the rock and history of development. The dissolution of the dolomite is interesting and has an important effect on the character of the caves developed. The caves preserved in this area include the longest known in South Africa and are perhaps among the largest dolomite systems known in the world. They are very old and in some cases contain important palaeontological deposits (Australopithecine fauna). The caves to various degrees are in a state of …
Video Tape : An Old-New Instructional Aid In The Physics Laboratory, Fanny Mercedes Torres Holguin
Video Tape : An Old-New Instructional Aid In The Physics Laboratory, Fanny Mercedes Torres Holguin
University of the Pacific Theses and Dissertations
My objective is to use the video-tape as another medium -- along with overhead projector, textbooks, guides of apprenticeship, pictures, lab equipment and suggestions from the programs and new trends in physics teaching -- being used to supplement our efforts in trying to reach more and more of our students The use of audiovisual media, and generally speaking the use of technology in education, can be constructive or destructive, can e very powerful in developing "human beings" or "robots", can increase the rate of apprenticeship, or can produce an educational catastrophe. However, it will heavily depend on the the professor, …
Glacial Deposits, Vol. 4, 1975-1976, Department Of Geography-Geology
Glacial Deposits, Vol. 4, 1975-1976, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Qsim2: A Low-Budget Heuristic Approach To Modeling And Forecasting, Wayne Wakeland
Qsim2: A Low-Budget Heuristic Approach To Modeling And Forecasting, Wayne Wakeland
Complex Systems Faculty Publications and Presentations
This paper contains a description of a simple mathematical framework and modeling process which can be used to study a large class of socio-techno-natural systems. Models may be designed using intuitive notions or data to help specify the variables, parameters and interrelationships, which, with the aid of a computer program, can be used to forecast system behavior under various assumptions. Two example models are described.
Global Bifurcation Theorems For Nonlinearly Perturbed Operator Equations, John Macbain
Global Bifurcation Theorems For Nonlinearly Perturbed Operator Equations, John Macbain
Faculty Publications
No abstract provided.
Geophysical Institute Annual Report 1975-76, Geophysical Institute
Geophysical Institute Annual Report 1975-76, Geophysical Institute
GI Reports
The 1975-76 Geophysical Institute Annual Report presents an overview of the year’s scientific research achievements across the Institute’s disciplines, alongside operational summaries covering finances, administrative changes, and other key activities.
Trace Fossils Of The Brassfield Formation, Lower Silurian, In South-Central Ohio And North Central Kentucky, Eugene J. Murray
Trace Fossils Of The Brassfield Formation, Lower Silurian, In South-Central Ohio And North Central Kentucky, Eugene J. Murray
Masters Theses
No abstract provided.
Radiative Lifetime Of The B ²Σˉ State Of Ch, Richard A. Anderson, Jerry Peacher, David M. Wilcox
Radiative Lifetime Of The B ²Σˉ State Of Ch, Richard A. Anderson, Jerry Peacher, David M. Wilcox
Physics Faculty Research & Creative Works
The radiative lifetimes of the N'=3 to 15 rotational states of the v'=0 level of the B 2Σ- state of CH were measured. Emission lines were observed to N'=15, but no lines above this rotational state were observed. This result agrees with previous studies. The lifetimes of all rotational states were between 300 and 400 ns. Previous measurements have indicated that the N'=15 level might have a lifetime as short as 100 ns.
High-Frequency Dielectric Measurements On Electro-Optic Single Crystals, J. R. Teague, R. R. Rice, Robert Gerson
High-Frequency Dielectric Measurements On Electro-Optic Single Crystals, J. R. Teague, R. R. Rice, Robert Gerson
Physics Faculty Research & Creative Works
A slotted line was used to measure the high-frequency dielectric constant and loss tangent of several electro-optic crystals useful for wide-band laser modulator applications. Dielectric measurements were made at 0.1, 0.3, 1.0, and 2.0 GHz.
Use Of Optical Character Recognition In The Invoice Processing System Of The Michigan Medicaid Program, Richard F. Burns
Use Of Optical Character Recognition In The Invoice Processing System Of The Michigan Medicaid Program, Richard F. Burns
Masters Theses
No abstract provided.
Using A Programmable Calculator To Introduce Fundamental Concepts Of Assembly Language Programming, H. D. Schwetman
Using A Programmable Calculator To Introduce Fundamental Concepts Of Assembly Language Programming, H. D. Schwetman
Department of Computer Science Technical Reports
No abstract provided.