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An Approach To The Synthesis Of Pyrans, Thomas F. Ball
An Approach To The Synthesis Of Pyrans, Thomas F. Ball
Dissertations, Theses, and Masters Projects
No abstract provided.
A Method For Evaluating The Long-Term, Cumulative Impacts Of Tidal Marsh Alterations: The York River System, A Case Study, Andrew W. Zacherle
A Method For Evaluating The Long-Term, Cumulative Impacts Of Tidal Marsh Alterations: The York River System, A Case Study, Andrew W. Zacherle
Dissertations, Theses, and Masters Projects
No abstract provided.
Antibody Production In Spot (Leiostomus Xanthurus Lacepede): A Model To Test The Impact Of Elizabeth River Sediments On The Humoral Immune System Of Fish, Catherine Nancy Pourreau
Antibody Production In Spot (Leiostomus Xanthurus Lacepede): A Model To Test The Impact Of Elizabeth River Sediments On The Humoral Immune System Of Fish, Catherine Nancy Pourreau
Dissertations, Theses, and Masters Projects
No abstract provided.
Resin Acid Compounds In A Kraft Pulp And Paper Mill Effluent And Their Distribution In Bottom Sediments Near The Outfall, Manida Unkulvasapaul
Resin Acid Compounds In A Kraft Pulp And Paper Mill Effluent And Their Distribution In Bottom Sediments Near The Outfall, Manida Unkulvasapaul
Dissertations, Theses, and Masters Projects
Kraft pulp and paper mill effluents (KPPME) collected on three occasions were analyzed for resin acids, aliphatic hydrocarbons, and aromatic hydrocarbons. The maximum total concentrations of these compounds found in secondary effluents were 8 mg/L resin acids, 4.0 mg/L resolved aliphatic hydrocarbons, and 0.2 mg/L resolved aromatic hydrocarbons. Abietic acid and dehydroabietic acid were the two major components in resin acid fractions and were responsible for > 70% of the total concentration. Analyses of estuarine water and sediments collected from the outfall and nearby areas showed that dehydroabietic acid was the major resin acid in either water or sediment. Concentrations of …
Anatomical Observations On The Ampullae Of Lorenzini From Selected Skates And Galeoid Sharks Of The Western North, William Raschi
Anatomical Observations On The Ampullae Of Lorenzini From Selected Skates And Galeoid Sharks Of The Western North, William Raschi
Dissertations, Theses, and Masters Projects
The gross structure of the ampullae of Lorenzini and its distribution on the body of 40 species of skates (Rajoidei) and 5 species of sharks (Galeomorphii) were compared in an attempt to investigate correlations within this system to feeding mechanisms. Three general lines of morphological change are observed. A larger proportion of the ampullary pores are associated with the ventral surface of the dorsoventrally flattened skates than the more conically shaped sharks. The relative proportion of ventral pores is significantly reduced on those species inhabiting aphotic waters. Secondly, the more piscivorous rajoids possess an array of ventral pores which covers …
Lower Chesapeake Bay Surface Turbidity Variations As Detected From Landsat Images, Michael S. Fedosh
Lower Chesapeake Bay Surface Turbidity Variations As Detected From Landsat Images, Michael S. Fedosh
Dissertations, Theses, and Masters Projects
Landsat images are analyzed to investigate the causes of turbidity variations in lower Chesapeake Bay surface water. Visual analysis and image enhancement are used in association with optical film density data obtained along selected Bay transects. The optical density data of all images, inversely related to surface turbidity, are used to produce residual turbidity profiles showing turbidity above and below average conditions. meteorological conditions have Images with similar tidal or their residual optical density data averaged to identify probable causes of above average turbidity levels. Freshwater discharge does not directly contribute suspended sediment to Chesapeake Bay, except from the Potomac …
The Response Of Benthic Respiration To Nutrient Levels, Laurence E. Gadbois
The Response Of Benthic Respiration To Nutrient Levels, Laurence E. Gadbois
Dissertations, Theses, and Masters Projects
No abstract provided.
Nanoplankton Dynamics In A Salt Marsh-Mudflat Ecosystem, Helena Maria Galvaeo
Nanoplankton Dynamics In A Salt Marsh-Mudflat Ecosystem, Helena Maria Galvaeo
Dissertations, Theses, and Masters Projects
No abstract provided.
Geologic Responses To Late Cenozoic Marine Transgressions In The Poropotank River Estuary, Virginia, Martin Lane Mitchell
Geologic Responses To Late Cenozoic Marine Transgressions In The Poropotank River Estuary, Virginia, Martin Lane Mitchell
Dissertations, Theses, and Masters Projects
No abstract provided.
A Theory Of Associative Detachment, Susan Elizabeth. Haywood
A Theory Of Associative Detachment, Susan Elizabeth. Haywood
Dissertations, Theses, and Masters Projects
In this thesis a theory of associative detachment (A('-) + B (--->) AB + e) is presented. The theory is based on the close-coupling theory of Wang and Delos, but is more general in that final states of the nuclei (AB) are treated quantum mechanically. This is necessary since the molecule may be in any one of several vibrational states. The Schroedinger equation is reduced to an infinite set of coupled equations using carefully chosen assumptions. The coupled equations are uncoupled and the resulting equation for the wave function of the negative ion is solved to zero and first …
Synthesis Of 2-Alkylidene-1,3-Cyclohexanediones, Mary Virginia Manson
Synthesis Of 2-Alkylidene-1,3-Cyclohexanediones, Mary Virginia Manson
Dissertations, Theses, and Masters Projects
No abstract provided.
Late Cenozoic Landforms, Stratigraphy And History Of Sea Level Oscillations Of Southeastern Virginia And Northeastern North Carolina, Pamela Crowson Peebles
Late Cenozoic Landforms, Stratigraphy And History Of Sea Level Oscillations Of Southeastern Virginia And Northeastern North Carolina, Pamela Crowson Peebles
Dissertations, Theses, and Masters Projects
A depositional model accounting for the stratigraphic sequences which accumulate during a marine transgression across a dissected coastal plain aids in understanding the geologic history of southeastern Virginia and northeastern North Carolina. Application of this model to the Shirley Formation (middle Pleistocene) and the Sedgefield and Lynnhaven members of the Tabb Formation (late Pleistocene) allows delineation of (1) the facies within, (2) the areal extent of, and (3) the landforms associated with these lithostratigraphic units. Facies within each lithostratigraphic unit consist of (1) a vertical succession from local, basal, channel-fill deposits and coarse, basal, lag deposits which grade upward into …
Synthesis And Characterization Of Some Oxoperoxopolycarboxylato Vanadates (V) And Their Biochemical Significance, Myunghi Lee
Synthesis And Characterization Of Some Oxoperoxopolycarboxylato Vanadates (V) And Their Biochemical Significance, Myunghi Lee
Dissertations, Theses, and Masters Projects
No abstract provided.
Electrochemical Studies On Peroxo Heteroligand Vanadates (V) In Aqueous Solution, David J. Mayonado
Electrochemical Studies On Peroxo Heteroligand Vanadates (V) In Aqueous Solution, David J. Mayonado
Dissertations, Theses, and Masters Projects
No abstract provided.
Semi-Flexible Polyimide And Polyamide Systems, John Ryan Evans
Semi-Flexible Polyimide And Polyamide Systems, John Ryan Evans
Dissertations, Theses, and Masters Projects
No abstract provided.
The Distribution And Abundance Of The Bottlenose Dolphin, Tursiops Truncatus In Virginia, Robert A. Blaylock
The Distribution And Abundance Of The Bottlenose Dolphin, Tursiops Truncatus In Virginia, Robert A. Blaylock
Dissertations, Theses, and Masters Projects
No abstract provided.
Evaluation Of Carbon-14 Uptake Algal Toxicity Assay And Its Application In Field Assessment Of Tributyltin Chloride And Chlorinated Sewage Toxicities, Soon Lin Ho
Dissertations, Theses, and Masters Projects
No abstract provided.
Non-Tidal Sea Level Variations Across The Lower Chesapeake Bay, Richard Leo Garfield
Non-Tidal Sea Level Variations Across The Lower Chesapeake Bay, Richard Leo Garfield
Dissertations, Theses, and Masters Projects
No abstract provided.
Electrophoretic Stock Identification Of Summer Flounder, Paralichthys Dentatus, Garret Van Housen
Electrophoretic Stock Identification Of Summer Flounder, Paralichthys Dentatus, Garret Van Housen
Dissertations, Theses, and Masters Projects
No abstract provided.
Solvolysis Of 2-Buten-2-Yl Triflates, Michael M. Mellis
Solvolysis Of 2-Buten-2-Yl Triflates, Michael M. Mellis
Dissertations, Theses, and Masters Projects
No abstract provided.
Transition Metal Promoted Carbometallation Of Alkynols, Douglas W. Moore
Transition Metal Promoted Carbometallation Of Alkynols, Douglas W. Moore
Dissertations, Theses, and Masters Projects
No abstract provided.
Electron Detachment In Negative Ion-Molecule Collisions, Mohammed Saiful Huq
Electron Detachment In Negative Ion-Molecule Collisions, Mohammed Saiful Huq
Dissertations, Theses, and Masters Projects
Absolute total cross sections for electron detachment, reactive scattering, charge transfer and dissociative charge transfer have been measured for collisions of hydrogen and halogen negative ions with various molecular targets. The reactants investigated involve H('-), D('-), F('-), Cl('-), Br('-) and I('-) ions as projectiles and H(,2), D(,2), HD, N(,2), CO, O(,2), CO(,2), CH(,4) and Cl(,2) molecules as targets. The energy range of these experiments extended from about 1 eV to about 300 eV in the lab.;The threshold behavior of the detachment cross sections for the reactants H('-)(D('-)) + H(,2),D(,2) and HD has been determined. The thresholds for detachment for both …
Deformation In A Chiral Bag Model, John W. Hunter
Deformation In A Chiral Bag Model, John W. Hunter
Dissertations, Theses, and Masters Projects
A chiral bag model including the effects of quarks, gluons and pions is calculated perturbatively to second order. The bag shape is determined from the requirement that the pressure exerted by the fields be zero at the bag surface. to second order the nucleon is found to be spherical, while the (DELTA) is oblate or prolate for spin projections (VBAR)m(,z)(VBAR) = 3/2, (VBAR)m(,z)(VBAR) = 1/2 respectively. The coupling constants g(,(pi)(DELTA)(DELTA)) and g(,(pi)NN) are calculated and the ratio g(,(pi)(DELTA)(DELTA))/g(,(pi)NN) is an improvement over previous work. The nucleon and (DELTA) magnetic moments are also calculated.
Acoustic Radiation-Induced Static Strain In Single Crystal Silicon, Ka Kui Peter Li
Acoustic Radiation-Induced Static Strain In Single Crystal Silicon, Ka Kui Peter Li
Dissertations, Theses, and Masters Projects
Quantitative verification of the existence of static acoustic displacements generated by acoustic waves propagating in single crystal samples of intrinsic silicon is presented. Measurements are made of the static displacements generated by 30 MHz acoustic compressional waves propagating along the 111 , 110 , and 100 crystalline directions. From these measurements the nonlinearity parameters are calculated and found to have the value 3.87 along the 111 direction, 4.23 along the 110 direction, and 2.13 along the 100 direction. These results are in agreement with values obtained independently from harmonic generation and pressure derivative measurements. Implications of the present work to …