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Articles 76051 - 76080 of 78600
Full-Text Articles in Entire DC Network
Ecosym: A Classification And Information System For Wildland Resource Management-Final Report, J.A. Henderson, L.S. Davis
Ecosym: A Classification And Information System For Wildland Resource Management-Final Report, J.A. Henderson, L.S. Davis
Progress reports
No abstract provided.
Ecosym-Plant Community Classification, Jan A. Henderson, Neil E. West
Ecosym-Plant Community Classification, Jan A. Henderson, Neil E. West
Progress reports
No abstract provided.
Plants As Pumps, E A N Greenwood
Plants As Pumps, E A N Greenwood
Journal of the Department of Agriculture, Western Australia, Series 4
Native species vary greatly in their ability to pump ground water.
CSIRO studies are measuring water use by different plants to plan revegetation strategies.
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
WKU Administration Documents
Papers representative of the variety of scholarly research conducted at WKU.
- Adams, Kathy. The Appalachian Language
- Barnett, Philip. A Study of Deviant Behavior of XYY Individuals in Regard to Environment and Genotype
- Bell, Brooks. Loving, Loyal Linda Loman: An Interpretive Note
- Danhauer, Janice. Motivating Workers Through Job Design
- Davis, Barbara. The Transformation of a Man into a Man of Understanding in Murinbata Society
- Davis, Diane. The Argot of the Homosexual
- Jewell, Teresa. The Life Story of the Hero of World War I - Sergeant Alvin C. York
- Lanham, Wayne. Das Knarrenschiff and a Ship of Fools: A Study in Influence …
1978-1979 Nova University Bulletin For The Academic Year, Nova Southeastern University
1978-1979 Nova University Bulletin For The Academic Year, Nova Southeastern University
Undergraduate Programs Course Catalogs
No abstract provided.
The Classical Limit Of Quantum Theory, John Thomas Bruer
The Classical Limit Of Quantum Theory, John Thomas Bruer
Student Theses and Dissertations
This essay treats of the relationship between quantum and classical mechanics. Both physicists and philosophers hold that quantum mechanics reduces to classical mechanics as ħ→0, or that classical mechanics is a special case of quantum mechanics in this limit. If one theory reduces to another, certain formal and nonformal conditions must be satisfied. These conditions are formulated and it is shown that the Wigner transformation can serve as a natural reduction function in a reduction which satisfies the formal and nonformal conditions. Finally, it is argued that this reduction does not aid in solving the problem of providing an adequate …
Environmental Quality 1977 - Hillsborough County Florida, A. J. Shaw, R. G. Wilkins, Hillsborough County Environmental Protection Commission
Environmental Quality 1977 - Hillsborough County Florida, A. J. Shaw, R. G. Wilkins, Hillsborough County Environmental Protection Commission
Reports
Air pollutant sampling was conducted at 87 locations in Hillsborough County during 1977. Location of sampling stations and pollutants sampled are shown on Maps and Tables at end of this Air Section. About 72,000 Air Samples are summarized and detailed in this report.
1901 river, stream, and sewage treatment plant samples were analyzed during 1977 for up to 49 different types of water pollution resulting in 25,421 individual water quality measurements. About one-half of these water quality measurements were generated from Bay or River samples collected at the regular networks. About one-fourth were collected by the sewage treatment plant monitoring …
Predicted And Measured Drainable Porosities For Field Soils, R. W. Skaggs, Larry G. Wells, S. R. Ghate
Predicted And Measured Drainable Porosities For Field Soils, R. W. Skaggs, Larry G. Wells, S. R. Ghate
Biosystems and Agricultural Engineering Faculty Publications
Experiments were conducted on large field cores to determine the relationship between drainage volume and water table depth for five soils. The measured drainage volumes were less than predicted from the soil water characteristics for three soils, but were in good agreement for the other two. Drainable porosities were calculated from both theoretical and experimental drainage volume-water table depth relationships by assuming that the unsaturated zone is essentially 'drained to equilibrium, with the water table. The experimental drainable porosities thus obtained were less than predicted.
Drainable porosities for drainage in two-dimensions were calculated from experimental results for one-dimension by assuming …
Texas Eastern University Catalog, 1978-1979, University Of Texas At Tyler
Texas Eastern University Catalog, 1978-1979, University Of Texas At Tyler
Catalogs
No abstract provided.
Competitive-Cooperative Processes And Stability Of Diffusion Systems, V. Lakshmikantham, G. S. Ladde
Competitive-Cooperative Processes And Stability Of Diffusion Systems, V. Lakshmikantham, G. S. Ladde
Mathematics Technical Papers - Archive
Very recently, the stability analysis of deterministic [12], random [12,13] competitive-cooperative process has been made in a systematic and unified way. It is well recognized that the probabilistic models in biological [7,9,19,20,30], physical [7,20,21,30], and social [31] sciences are more realistic than the deterministic models. In this paper, we extend the stability analysis of random competitive-cooperative processes [11] to the stability analysis of competitive processes of the diffusion type. The stability results presented includes the stability analysis of multispecies community models [16,17] under white-noise excitations. All our results are in the frame-work of the earlier results [11-13, 16-18]. The paper …
Evaluation Of Fish Stocking In Southeastern South Dakota Ponds, Paul J. Peeters
Evaluation Of Fish Stocking In Southeastern South Dakota Ponds, Paul J. Peeters
Electronic Theses and Dissertations
A mail survey was sent to owners of 220 ponds which had received hatchery fish. Based on 187 pond owner responses, at most 45 (24%) of the ponds still contained the fishes stocked. Pond dryness and/or winterkill attributed to the failure of 121 (65%) of the ponds. A subsequent field survey of 30 ponds identified fish populations of recreational value. Attempts were made to identify important pond parameters that contributed to successful fish populations. Aᵼ (percent harvestable fish), F/C (forage to carnivore ratio), balance (in or out), and a scale of balance were the dependent variable used to describe successful …
Specificity Of Antisera Against Hordeum Vulgare Ribonuclease And Serological Quantitation Of The Enzyme In Tissue Extracts, Steven Bryan Hawthorne
Specificity Of Antisera Against Hordeum Vulgare Ribonuclease And Serological Quantitation Of The Enzyme In Tissue Extracts, Steven Bryan Hawthorne
Electronic Theses and Dissertations
Specific rabbit antisera against purified seedling RNase I from both a hardy (Dicktoo) and less-hardy (Tennessee Winter) cultivar of winter barley was obtained using a 1 mg injection schedule. Both antisera formed a single precipitin band on double immunodiffusion and immunoelectrophoresis when reacted with the homologous crude tissue extract. RNase antigen from either cultivar was highly cross-reactive with both antisera. Passive hemagglutination inhibition was used in an attempt to distinguish purified RNase from both cultivars. A consistent difference in anti-RNase serum specificity between cultivars was shown, but the difference observed by this method was not sufficient to conclude structural differences …
Studies On The Role Of Solar Ultraviolet Radiation In "Natural" Water Purification By Aquatic Ecosystems, John Calkins, Jeanne A. Barcelo, Perry Grigsby, Stephen Martin
Studies On The Role Of Solar Ultraviolet Radiation In "Natural" Water Purification By Aquatic Ecosystems, John Calkins, Jeanne A. Barcelo, Perry Grigsby, Stephen Martin
KWRRI Research Reports
The possibility that pollution might deplete the stratospheric ozone layer and intensify solar UV at the earth's surface focuses attention on the role of solar UV in the various ecosystems at the earth's surface. Previous studies suggested that solar UV might contribute to bacterial die off in wastewater and the studies reported here were directed toward elucidating the action of solar UV in "natural" waters.
It has been assumed that solar UV action on aquatic ecosystems can be evaluated (using proper models) on the basis of the following four independently measurable quantities: I) the intensity of solar UV at the …
Amperometric Determination Of Chemical Oxygen Demand, Catherine Eckert Hutchins
Amperometric Determination Of Chemical Oxygen Demand, Catherine Eckert Hutchins
Masters Theses
A method is described for measuring the low level --5 to 50 ppm-- chemical oxygen demand (COD) of water samples by amperometric titration. The method involves digestion of the sample with potassium dichromate in a 50% sulfuric acid solution using one-fifth the reagents and sample required for the standard COD method. This is followed by an amperometric titration using a standard ferrous ammonium sulfate solution and employing a rotating platinum electrode in a three-electrode potentiostatic system. The titration is carried out at a potential of +0.80 volts versus a saturated calomel electrode, thus eliminating the need for O2 purging …
Ergosterol Effect On The Desaturation Of 14c-Cis-Vaccenate In Tetrahymena, Tiee-Chyau Miin
Ergosterol Effect On The Desaturation Of 14c-Cis-Vaccenate In Tetrahymena, Tiee-Chyau Miin
Masters Theses
Supplement of ergosterol to the growth medium of the ciliated protozoan Tetrahymena pyriformis W leads to incorporation of the foreign sterol within cell membranes and suppression of synthesis of the native sterol-like compound tetrahymanol, as well as to changes in the fatty acid compositions of several major classes of membrane lipid. Alteration of fatty acid composition is thought to represent a regulatory mechanism whereby optimum membrane fluidity is maintained when the slightly dissimilar foreign sterol is added into the phospholipid bilayer of the membranes.
The present study, using several different conditions of growth temperature, substrate concentrations and incubation time, and …
Breeding Biology And Prey Selection Of Ferruginous Hawks In Northwestern South Dakota, Charles L. Blair
Breeding Biology And Prey Selection Of Ferruginous Hawks In Northwestern South Dakota, Charles L. Blair
Electronic Theses and Dissertations
A study of the breeding biology and prey selection of ferruginous hawks (Buteo regalis) was conducted in northwestern South Dakota during 1976 and 1977. Twenty four pairs were located in 1976 and 18 pairs attempted to nest; 17 pairs located in 1977 attempted to nest. The ecological density of breeding pairs was approximately one per 100 km2. Young fledged per nesting attempt averaged 1.89 in 1976 and 2.29 in 1977. All but one nest were located in unbroken, lightly grazed prairie and all were situated on hills, buttes, or river cutbanks. General nest orientation was toward the south and west. …
Evaluation And Comparison Of Overland Flow And Slow Rate Systems To Upgrade Secondary Wastewater Lagoon Effluent, Michael C. Kemp, Daniel S. Filip, Dennis B. George
Evaluation And Comparison Of Overland Flow And Slow Rate Systems To Upgrade Secondary Wastewater Lagoon Effluent, Michael C. Kemp, Daniel S. Filip, Dennis B. George
Reports
To evaluate the effectiveness of overland flow treatment in upgrading secondary wastewater lagoon effluent, three 15 x 36 m plots on a 2.5 percent slope were constructed and sown for a high density vegetative cover using Reed Canary grass. Wastewater was applied to the upper end of each plot at rates of 7.5, 15, and 22.5 cm/wk. Results from the overland flow system investigation were compared with similar data obtained the preceding year from an existing slow rate land application system on an adjacent site. Secondary effluent from the same lagoon system was applied to the slow rate system study …
Water Quality Analysis Laboratory Procedures Syllabus, P. A. Cowan, D. B. Porcella, V. D. Adams, L. A. Gardner
Water Quality Analysis Laboratory Procedures Syllabus, P. A. Cowan, D. B. Porcella, V. D. Adams, L. A. Gardner
Reports
Introduction: The 1976 edition of "Methods of Chemical Analysis of Water and Wastes" describes chemical analytical procedures to be sued in Water Quality Office (WQO) laboratoires. The methods were chose through the combined efforts of the Regional Analytical Quality Control (AQC) Coordinators, Laboratory Quality Control Officers, and other senior chemicsts in both federal and state laboratories. Method selection was based on the following criteria: 1. The method should measure the desired constitutent with precision and accuracy suffiecient to meet the data needs of WQO in the presence of the interferences normally encountered in polluted waters. 2. The procedures should utilize …
Depositional And Paragenetic Controls On Porosity Development, Upper Red River Formation, North Dakota, Kipp W. Carroll
Depositional And Paragenetic Controls On Porosity Development, Upper Red River Formation, North Dakota, Kipp W. Carroll
Theses and Dissertations
The upper Red River Formation in North Dakota comprises a subtidal/intertidal facies overlain by three evaporitic sequences of four lithologic units each, labeled "P," "R," and "F" in stratigraphic order. Four porosity zones are recognized in the upper Red River: the subtidal/ intertidal facies forms one porosity zone, and each evaporitic sequence contains another. Each unit in a sequence, as well as the sequence itself, is thinner and less widespread than its preceding counterpart. All strata are laterally continuous across the main part of the Williston basin in North Dakota, but, the porosity zones eventually disappear to the east as …
1978-87 Publications Of The Uwrl, Utah Water Research Laboratory
1978-87 Publications Of The Uwrl, Utah Water Research Laboratory
Reports
This brochure is a listing of publications of the Utah Water Research Laboratory, College of Engineering, at Utah State University, Logan, Utah, for 1978 through 1985. Six categories of publications are included: Atmospheric Water Resources Series, General Series, Hydraulics and Hydrology Series, Water Resources Planning Series, Water Quality Series, and Other Publications. Publications out of print may obtained on a short time loan basis from the UWRL Library. When inquiring about or ordering Utah Water Research Laboratory publications please address: Utah Water Research Laboratory Publications Utah State University Logan, UT 84322-8200
The Joy Of Chemistry- Personal Impressions (Text And Audio), Frank D. Starkey
The Joy Of Chemistry- Personal Impressions (Text And Audio), Frank D. Starkey
Honorees for Teaching Excellence
No abstract provided.
A Simulation Model For Ring-Necked Pheasants, Melvin W. Taylor
A Simulation Model For Ring-Necked Pheasants, Melvin W. Taylor
Nebraska Game and Parks Commission: Staff Research Publications
One of the most important game birds in the United States is the ring-necked pheasant (Phasianus colchicus). This Asian refugee has provided recreation for untold numbers of sportsmen. Its presence has meant millions of dollars for state game agency coffers, not to mention its impact on local economies. Pheasant populations have fluctuated widely in past years, but the overall trend since the early 1960's has been downward over most of the pheasant range. This decline was caused primarily by loss of habitat due to change in agricultural land use (Mohlis 1974, Dahlgren 1963, Kobriger 1972, Taylor et al. …
Social And Spatial Relationships Of Coyote Families And Neighboring Coyotes, Althoff D. P.
Social And Spatial Relationships Of Coyote Families And Neighboring Coyotes, Althoff D. P.
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
New Evidence Supporting The Assignment Of Glutamic Acid As An Iron Ligand In Hemerythrin, Patricia M. Gormley
New Evidence Supporting The Assignment Of Glutamic Acid As An Iron Ligand In Hemerythrin, Patricia M. Gormley
Dissertations and Theses
The amino acid sequence determination of Phascolopsis gouldii hemerythrin in the region of the proposed iron ligand at position 58 was the main objective of this research endeavor. Generation of a large peptide was pursued by trypsin digestion of citraconylated hemerythrin producing peptide 50-113 for sequenator analysis. Detection of the phenylthiohydantoin amino acid derivatives by gas-liquid and high-performance-liquid chromatography yielded unambiguous sequence elucidation through the region of interest identifying residue 58 as glutamic acid.
The Product Distribution And Structural Assignment Of The Monobromination Products Of 7-Hydroxy-2,2,5-Trimethylchroman-4-One, Marsha L. Dutkowski
The Product Distribution And Structural Assignment Of The Monobromination Products Of 7-Hydroxy-2,2,5-Trimethylchroman-4-One, Marsha L. Dutkowski
Dissertations and Theses @ UNI
The compound 6-bromo-7-hydroxy-2,2,5-trimethylchroman-4-one (1) was desired for use in a project directed toward the synthesis of two novel depsidones. Since 7-hydroxy-2,2,5-trimethylchroman-4-one (2) was readily available, a number of bromination conditions were investigated in an attempt to find a regiospecific synthesis of 1. However, mixtures of varying composition of 1, 2, 3 and 4 were obtained under all the conditions tried. Final separation of 1 and its isomer 3 was accomplished by a mixture of chromatographic techniques. Structural assignment of the two brominated products 1 and 3 was made by a combination of carbon and proton NMR.
Dialectics And Catastrophe, Martin Zwick
Dialectics And Catastrophe, Martin Zwick
Complex Systems Faculty Publications and Presentations
The three classical principles of Hegelian and Marxist dialectics, (1) the transformation of quantity into quality, (2) the unity and struggle of opposites, and (3) the negation of negation, can be modeled with the Catastrophe Theory of René Thom and E. C. Zeeman, especially with the ‘elementary catastrophes’ known as the cusp and the butterfly.
Factor Analysis Method, Stephen Hauwah Kan
Factor Analysis Method, Stephen Hauwah Kan
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
The logical steps performed when doing a factor analysis can be classified into three operation s. The first step concerns the exact mode of analysis and involves the type of centering, scaling and formation o f sums of squares . The second step involves extraction of initial factors. The algebraic basis of the factors are rotated in the last step to obtain a more easily interpreted set of factors. At each step several different methods have been suggested and appear in the literature. Two primary modes of factor analysis are commonly used an d they are denoted as R-mode and …
Mathematical Modeling Of A Sociological And Hydrologic Decision System, Wade H. Andrews, J. Paul Riley, Malcolm B. Masteller
Mathematical Modeling Of A Sociological And Hydrologic Decision System, Wade H. Andrews, J. Paul Riley, Malcolm B. Masteller
Reports
The general goal of this study was to develop a functional model of the sociological and related hydrologic elements in flood control decision-making. Conceptual system models were developed for the hydrologic system and for the sociological system. The sociological variables were identified as they related to the steps in the process of the model. Following the conceptual decision process model the social elements of the model were calibrated from data obtained from field studies and mathematical equations were developed and tested. Finally simulations of the process were run. After adjustments were made the model was found to function. Several methodological …
The Chemical And Biological Effect Of A Gulf Stream Intrusion Off St. Augustine, Florida, Larry P. Atkinson, Gustav-Adolf Paffenhöfer, William M. Dunstan
The Chemical And Biological Effect Of A Gulf Stream Intrusion Off St. Augustine, Florida, Larry P. Atkinson, Gustav-Adolf Paffenhöfer, William M. Dunstan
CCPO Publications
During a 3-day anchor station in shelf waters off St. Augustine, Florida we observed the effect of an intruding mass of deeper Gulf Stream water. The shelf waters were relatively low in nutrients and salinity while the Gulf Stream waters were high in salinity and nutrients. Onshore currents correlated with increases in nitrate and chlorophyll concentrations.
The advection of higher nutrient Gulf Stream water coincided with high chlorophyll (∼ mg chl a m−3) concentrations and dense populations of Phaeocystis pouchetii (up to 3.12 × 10°1−1). Zooplankton sampling was impossible in the bottom layer because of the …
The Results Of Four Oceanographic Cruises In The Georgia Bight, L. P. Atkinson
The Results Of Four Oceanographic Cruises In The Georgia Bight, L. P. Atkinson
CCPO Publications
During 1973 and 1974 we conducted four oceanographic cruises in the Georgia Bight with the purpose of gaining background seasonal data with which to plan more scientific experiments. In this technical report the data are presented in graphical form with interpretation. The data itself was published in two technical reports (Atkinson, 1975 and 1976). Some of the interpretations in this report will be given in more detail in published journal articles.