Physical Sciences and Mathematics Commons^™

Evaluation Of A Power Plant Reservoir As A Holding Area For Paddlefish Brood Stock, Terry L. Margenau

Electronic Theses and Dissertations

Twenty paddlefish (Polyodon spathula) released into the Big Stone Power Plant boiler make-up reservoir were monitored to determine growth, condition, and food habits. In addition, fish and zooplankton populations were sampled and chemical and physical parameters measured to determine the potential of the reservoir as a holding area for paddlefish brood stock. Paddlefish captured during the first year after their release into the boiler make-up reservoir averaged 2.2 kg body weight increases and 59 mm eye-fork length increases. Condition factors of captured paddlefish also increased during this period from 1.26 to 1.49. Paddlefish food in the reservoir consisted almost entirely …

Aquatic Plant Communities And Invertebrates In A Prairie Pothole During Duck Brood Rearing, Jeffrey W. Mccrady

Electronic Theses and Dissertations

More than 1,100 samples of aquatic plants and associated invertebrates were collected in a prairie wetland. Sampling was done weekly throughout the duck brood rearing season. Linear regression revealed a 4 to 100 ratio of animal to plant biomass (R²=0.488). Comparatively high degrees of association were found between Ceratophyllum demersum and Gastropoda and between Lemna minor and most zooplankton groups. Significant sources of variation in invertebrate biomass were plant communities, date, plants, and community by date interaction. Depth and communities were not significant.

Composition, Biomass, And Protein Content Of A Lemna Trisulca L., Invertebrate Community In A Prairie Wetland, Linda J. Meyers

Electronic Theses and Dissertations

Samples of star duckweed (Lemna trisulca L.) were collected from a South Dakota prairie wetland during the summer 1981. Amphipods and gastropods were the dominant macroinvertebrates found within samples of duckweed in terms of biomass and density. Cladocera were the dominant microinvertebrates found in association with star duckweed. Significant variability was found in the biomass and densities of specific invertebrates with respect to sampling dates. Crude protein values of star duckweed-invertebrate community samples ranged from 7.6 to 18.5% and were found to correlate significantly with protein levels of the duckweed. Crude protein values for star duckweed ranged from 7.1 to …

Effective Field Model For Ising Ferromagnets: Influence Of Triplet Correlations, G. B. Taggart

Physics Publications

We use an effective field model which explicitly incorporates correlations to determine the critical temperatures for Ising ferromagnets on the common lattices. We specifically retain only the first nontrivial odd correlation function, i.e., the triplet correlation function, while neglecting higher order correlations. Within this approximation, assuming the equivalence of triplet correlations involving both central and noncentral sites in the nearest neighbor cluster yields values for the critical temperature below the Bethe approximations for z⩾4. Likewise, assuming the inequivalence of triplet correlations involving the central and noncentral sites yields values of the critical temperature only slightly higher than the Bethe approximation …

Center For Science And Engineering, Master Of Science, Computer Science 1982, Nova University

College of Engineering and Computing Course Catalogs

No abstract provided.

Geologic Characterization Report For The Paradox Basin Study Region Utah Study Areas, Volume V, Appendices, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This study is a part of the U.S. Department of Energy's (DOE) National Waste Terminal Storage Program (NWTS). The scope of DOE's NWTS responsibilities include providing the technology and facilities to isolate high-level radio-active wastes for as long as the wastes represent a hazard. Emplacement of waste packages in mined geologic repositories deep underground in various types of rock formations is one method being evaluated. Using a basic site selection process (Figure 1-1), regions being investigated include portions of the United States that are underlain by tuff, salt domes, granite, basalt, and bedded salt. The latter medium is the subject …

Flood Insurance Study, City Of Ogden, Utah, Weber County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Ogden, Weber County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert Ogden to the regular program of flood insurance by the Federal Emergency Management Agency. Local and regional planners will use this study in their efforts to promote sound flood plain management.

Flood Insurance Study, City Of North Ogden, Utah, Weber County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of North Ogden, Weber County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert North Ogden to the regular program of flood insurance by the Federal Emergency Management Agency. Local and regional planners will use this study in their efforts to promote sound flood plain management.

Geophysical Logs Of Four Drill Holes, Acord Lakes And Emery West Quadrangles, Sevier County, Utah, United States Geological Survey

All U.S. Government Documents (Utah Regional Depository)

This report presents the geophysical logs for four drill holes drilled during 1981 in the Skumpah Creek area (Acord Lakes quadrangle) and The Pines area (Emery West quadrangle), Sevier County, Utah. Figures 1 and 2 show drill-hole locations, and figures 3-7 are the geophysical logs. The drilling was done by a private drilling company under contract to the U.S. Geological Survey. The sites of all the drill holes are within the Wasatch Plateau Known Recoverable Coal Resource Area (KRCRA). Three of the sites are in the Richfield Ranger District of the Fishlake National Forest and one site is in the …

Ground-Water Reconnaissance Of The Central Weber River Area, Morgan And Summit Counties, Utah, United States Geological Survey

All U.S. Government Documents (Utah Regional Depository)

A reconnaissance of ground water in the central Weber River area obtained data to help State administrators devise a policy for acting on applications to appropriate ground water resulting from recent and future influxes of residents.

Regional Hydrology Of The Green River-Moab Area, Northwestern Paradox Basin, Utah, United States Geological Survey

All U.S. Government Documents (Utah Regional Depository)

The Green River-Moab area encompasses about 7,800 square kilometers or about 25 percent of the Paradox basin. The entire Paradox basin is a part of the Colorado Plateaus that is underlain by a thick sequence of evaporite (salt) beds of Pennsylvanian age. The rock units that underlie the area have been grouped into hydrogeologic units based on their water-transmitting ability. Confining beds consist of evaporite beds of mostly salt, and overlying and underlying thick sequences of rocks with minimal permeability; above and below these confining beds are aquifers. The upper Mesozoic sandstone aquifer, probably is the most permeable hydrogeologic unit …

Use Of Multispectral Scanner Images For Assessment Of Hydrothermal Alteration In The Marysvale, Utah, Mining Area, United States Geological Survey

All U.S. Government Documents (Utah Regional Depository)

Multispectral images of an area near Marysvale, Utah, were collected by using the airborne U.S. National Aeronautics and Space Administration (NASA) 24-channel Bendix multispectral scanner; they were analyzed to define areas of hydrothermally altered, potentially mineralized rocks. Hydrothermally altered rocks, particularly volcanic rocks affected by solutions rich in sulfuric acid, are commonly characterized by concentrations of argillic minerals such as alunite and kaolinite. These minerals are important for identifying hydrothermally altered rocks in multispectral images because they have an intense absorption band centered near a wavelength of 2.2 um. Unaltered volcanic rocks commonly lack these minerals and hence do not …

Bedrock Aquifers In The Northern San Rafael Swell Area, Utah, With Special Emphasis On The Navajo Sandstone, United States Geological Survey

All U.S. Government Documents (Utah Regional Depository)

The northern San Rafael Swell area in southeastern Utah includes about 2,880 square miles (7,460 square kilometers) and ranges in altitude from about 3,290 to 7,921 feet (1,195 to 2,414 meters). Precipitation, the main source of water in the area, ranges from slightly less than 6 inches (152 millimeters) to slightly more than 12 inches (305 millimeters). Rocks that underlie the area range from Precambrian to Holocene in age. The thickness of sedimentary rocks ranges from 4,083 feet (1,244 meters) to about 30,000 feet (9,140 meters). The Entrada, Navajo, Wingate, and Coconino Sandstones and rocks of Mississippian age are considered …

In Situ And Laboratory Geotechnical Test Results From Borehole Gd-1 In Southeast Utah, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

In situ testing was conducted in the Gibson Dome No. 1 (GD-1) borehole in southeastern Utah at depths ranging from 954 to 1,507 m (3,130 to 4,945 feet). These tests were made in a number of salt strata to measure (1) stress-strain behavior of the borehole (hole "squeeze"); (2) short-term borehole creep; and (3) in situ stresses in salt strata. Laboratory triaxial strength and creep tests were conducted on core removed from GD-1 to provide engineering data under a variety of test conditions (stress state, strain rate, and temperature). Results of in situ and laboratory tests will be used to …

Utah Geothermal Institutional Handbook, A User's Guide Of Agencies, Regulations, Permits And Aids For Geothermal Development, L. Ward Wagstaff, Stanley Green

All U.S. Government Documents (Utah Regional Depository)

The purpose of this handbook is to assist interested persons in understanding and complying with the various laws, regulations, and procedures associated with the development of geothermal resources in Utah. Included in the Handbook are lists of the main permits required and the names of agencies and persons associated with permits; a summary of pertinent laws, regulations, and permits; and charts outlining typical development and permitting procedures. The Handbook is intended as a general guide; the best and most reliable guidance for a prospective developer is through direct interaction with the respective regulatory agencies.

Radio And Optical Observations Of The R Aquarii Jet, R. J. Sopka, G. Herbig, Menas Kafatos, A. G. Michalitsianos

Mathematics, Physics, and Computer Science Faculty Articles and Research

VLA observations at 6 cm and Lick Observatory optical plates of R Aquarii indicate the existence of a jetlike feature extending 7" -10" from the central star. A wide field map at 6 cm shows an unresolved compact radio source which lies close to the axis defined by the jet at a distance of ~ 3' from R Aqr. Episodic mass transfer in this symbiotic variable could explain the erratic outbursts that R Aqr is known to undergo. Formation of an accretion disk and the accompanying radio-optical jet may characterize the observed outbursts in this system.

In Search Of A Diversity Ethic For Wildlife Managemen, Fred B. Samson, Fritz L. Knopf

United States Department of Agriculture Wildlife Services: Staff Publications

As the century nears its end and demand for food and competition for land escalate, a most important issue facing conservationists will be the preservation of a mosaic of habitats in which can be preserved a representative cross-section of native species. The need to resolve this issue is emphasized in the Global 2000 Report to the President (Council on Environmental Quality 1980) which predicts that, worldwide, 500,000 to 2 million species will become extinct by the year 2000 and that the rate will increase from one per day in 1980 to one per hour by century's end (Myers 1979). Although …

An Evaluation Of Nutrient Sources To Onslow Bay, North Carolina, Larry P. Atkinson, Leonard J. Pietrafesa, Eileen E. Hofmann

CCPO Publications

Hydrographic and current meter data from Onslow Bay, North Carolina, were examined to determine the relative importance of various nutrient sources.

Upwelled Gulf Stream water is the major source of nutrients while rivers represent a minor, if not insignificant, source. In the summer during stratified conditions, the upwelled water penetrates across the shelf, but in the winter the upwelled water is restricted to the outer shelf. Nitrate flux across the 40 m isobath was calculated from continuous temperature and current records. Flux during the summer of 1976 was 2 μM m² sec^-1 which is considerably less than flux …

Monthly Report On The State Of Rivers 1982, Albert Kuo

Reports

Chiefly graphs showing monthly salinity, temperature, dissolved oxygen distributions at slackwater for the James, York, Pamunkey, and Rappahannock Rivers.

1982: June, September, October, November

A Natural Resources Survey And Habitat Evaluation Of The Willoughby Disposal Area, U.S. Naval Base, Norfolk, Virginia, Walter I. Priest, C. Richard Terman, Willliam Ihle

Reports

The purpose of this study is to determine the living natural resources utilizing the U.S. Navy's dredged material disposal area located adjacent to Willoughby Bay in Norfolk, Virginia and to determine the habitat value of this area to these resources.

Absolute Population Censuses Of Cave-Dwelling Crickets: Congruence Between Mark-Recapture And Plot Density Estimates, Gianmaria Carchini, Mauro Rampini, Valerio Sbordoni

International Journal of Speleology

The absolute size, N, of a Dolichopoda geniculata population was estimated both by the Lincoln-Petersen index and the total count on sample plot methods in a natural cave in Central Italy. 19 pairs of estimates, obtained over 2 years, exhibit a seasonal pattern and a mean value of N ≈ 430. Differences between estimates obtained with the 2 methods are not significant (P > 0.8). These results, and data from the literature enable most of the major factors influencing the two types of estimates to be identified. Respective cases where methods may be preferably applied are suggested.

Variation Among Populations Of The Troglobitic Amphipod Crustacean Crangonyx Antennatus Packard (Crangonyctidae) Living In Different Habitats Ii. Population Distribution, Gary W. Dickson

International Journal of Speleology

Population densities and factors affecting the distribution of the troglobitic (i.e., obligatory cavernicole) amphipod Crangonyx antennatus were examined in two distinct aquatic habitats. Observations were made seasonally for one year in six Lee Co., Virginia (U.S.A.) caves, three with mud-bottom pools and three with gravel-bottom streams. Pool habitats were found to contain greater C. antennatus densities than stream habitats, while the highest seasonal densities were recorded in August. Availability of food is considered to be the major factor allowing these increased population densities. The population distribution of C. antennatus was not found to be related to current velocity, water depth, …

Observations On The Biology Of Cave Planarians Of The United States, Jerry H. Carpenter

International Journal of Speleology

Observations are made on the biology of several species of cave planarians (mostly of the family Kenkiidae) collected alive from over 50 caves in 14 states. Most of these species were maintained in laboratory cultures at 12°C±3°C. Food eaten was extremely variable. Functions of the anterior adhesive organ included food capture, locomotion, defence against predators, and probably chemoreception, mechanoreception, and as a holdfast in strong currents. Predators probably consist of fishes, crayfishes, and salamanders. Sporozoan and ciliated parasites were found occasionally. Cocoons were found in winter, spring, and summer; they hatched in about 3 months and contained 2 to 17 …

Paramexiweckelia, A New Genus Of Subterranean Amphipod Crustacean (Hadziidae) From Northern Mexico, John R. Holsinger

International Journal of Speleology

Paramexiweckelia, new genus, is described from a groundwater outlet in Cohauila, Mexico. The type-species, by monotypy, is Mexiweckelia particeps Holsinger. Based on the number of its plesiomorphic (ancestral) characters, this genus is the most primitive member of the family Hadziidae from the North American mainland.

Hydroxide Binding Equilibrium In Hemerythrin, John David Mccallum

Dissertations and Theses

The measurement of the equilibrium constant and the thermodynamic parameters of the binding of hydroxide ions to the active site of hemerythrin, an invertebrate iron containing protein, was done by a new difference spectroscopic method. The method enables accurate measurements of equilibrium constants without accurate knowledge of molar absorptivities or protein concentrations and is novel in that it takes the difference between the two equilibrium mixtures, thus enabling the measurement of equilibrium constants when it is not convenient or possible to produce either substance as a pure reference material.

An Investigation Of Cadmium And Sulfur Reactions In Dimethylsulfoxide, Howard W. Hogle

Dissertations and Theses

The study of the reaction of cadmium and sulfur in dimethylsulfoxide (DMSO) is presented. Specifically, the reaction of dissolved molecular sulfur in DMSO at temperatures greater than 90°C with freshly precipitated metallic cadmium is followed by UV-visible spectrometry, atomic absorption spectrometry, and Raman spectrometry. Evidence for the formation of a new cadmium-sulfur species and S₃- is discussed. In a second reaction, an equilibrium sodium polysulfide solution in DMSO is titrated with a solution of cadmium ion at room temperature and the reaction progress is followed by means of UV-visible spectrometry. A calculation of the average number of polysulfide …

Chemical Constituents Of Cassia Absus, Linn Seeds, Hanaa Ibrahim Assil

Archived Theses and Dissertations

No abstract provided.

Configuration Interaction In Auger Spectra Of Magnesium, Mohamed Salah Sobhy

Archived Theses and Dissertations

No abstract provided.

Stenasellus Chapmani N. Sp. Crustacea Isopoda Asellota Des Eaux Souterraines De Bornéo (Sarawak), Guy Magniez

International Journal of Speleology

The females of a new species of Stenasellidae have been discovered in Snake Cave (= Gua Siput), in Sarawak, 4th Division, Malaysia (Gunong Mulu National Park, Borneo Island), by Mr. Philip Chapman, of Bristol, U.K., during an expedition of the Royal Geographical Society. The females of another larger species were known previously from several Cambodian caves. This suggests the existence of a general distribution of this family in the underground waters of the Peninsula and of the large Islands of the Indochinese Platform. Nevertheless, we must wait for the discovery of the males of these species to study their relationships, …

Sur Une Nouvelle Espèce Cavernicole Du Genre Cyathura (Isopoda, Anthuridae), (Résultats Zoologiques De La Mission Spéléologique Britannique En Papouasie-Nouvelle Guinée, 1975, 7), Stoitze Andreev

International Journal of Speleology

The present paper deals with the description of a new species of the genus Cyathura - C. beroni n.sp. - discovered in the caves in Papua New Guinea.