Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Environmental Sciences (1844)
- Oceanography and Atmospheric Sciences and Meteorology (1365)
- Oceanography (1262)
- Life Sciences (1121)
- Marine Biology (668)
-
- Physics (552)
- Environmental Monitoring (501)
- Natural Resources Management and Policy (489)
- Animal Sciences (395)
- Earth Sciences (388)
- Fresh Water Studies (387)
- Chemistry (342)
- Natural Resources and Conservation (297)
- Aquaculture and Fisheries (288)
- Environmental Indicators and Impact Assessment (256)
- Computer Sciences (245)
- Water Resource Management (242)
- Ecology and Evolutionary Biology (186)
- Engineering (149)
- Zoology (106)
- Condensed Matter Physics (104)
- Sedimentology (103)
- Geology (97)
- Environmental Education (90)
- Organic Chemistry (88)
- Social and Behavioral Sciences (72)
- Biogeochemistry (71)
- Terrestrial and Aquatic Ecology (70)
- Mathematics (65)
- Keyword
-
- Research and Technical Reports (797)
- Virginia (469)
- Data (296)
- GIS (232)
- Physical Sciences Peer-Reviewed Articles (222)
-
- Management (184)
- CCRM GIS Data (172)
- Sediment transport (170)
- Shoreline Inventories (168)
- CTD (167)
- Coastal Hydrodynamics and Sediment Dynamics (CHSD) (167)
- CHSD Presentations (156)
- LISST (150)
- Chesapeake Bay (149)
- Shoreline Studies Program (133)
- Shoreline Management (129)
- Biological Sciences Peer-Reviewed Articles (126)
- Special Reports in Applied Marine Science and Ocean Engineering (SRAMSOE) (126)
- Tides (113)
- CCRM Research and Reports (91)
- ADV (89)
- Cheasapeake Bay (85)
- Tidecal (85)
- Shoreline Inventory Reports (84)
- Ecology (77)
- Wetland (77)
- Legislation (72)
- VIMS Books and Book Chapters (72)
- Newsletter (70)
- Wildlife (70)
- Publication Year
- Publication
-
- Dissertations, Theses, and Masters Projects (1876)
- Reports (1105)
- Data (413)
- VIMS Articles (397)
- Arts & Sciences Articles (272)
-
- Presentations (173)
- Miscellaneous (116)
- VIMS Books and Book Chapters (86)
- Undergraduate Honors Theses (76)
- Virginia Wetlands Reports (70)
- Arts & Sciences Book Chapters (9)
- Articles (2)
- Arts & Sciences Open Educational Resources (2)
- Books (1)
- Open Education Resources (OER) (1)
- Richard Bland Faculty Works (1)
- Science Research Symposium (1)
- Undergraduate Research Awards (1)
- Publication Type
- File Type
Articles 3871 - 3900 of 4602
Full-Text Articles in Physical Sciences and Mathematics
Oyster Spatfall In Virginia Rivers: 1984 Annual Summary, James Whitcomb
Oyster Spatfall In Virginia Rivers: 1984 Annual Summary, James Whitcomb
Reports
The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.
Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries - 1984, Robert Orth, Jim Simons, Ruth Allaire, Virginia Carter, Larry Hindman, Kenneth Moore, Nancy Rybicki
Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries - 1984, Robert Orth, Jim Simons, Ruth Allaire, Virginia Carter, Larry Hindman, Kenneth Moore, Nancy Rybicki
Reports
No abstract provided.
Trajectories Of An Atomic Electron In A Magnetic Field, John B. Delos, Stephen Knudson, D. W. Noid
Trajectories Of An Atomic Electron In A Magnetic Field, John B. Delos, Stephen Knudson, D. W. Noid
Arts & Sciences Articles
Classical trajectories of an atomic electron in a magnetic field are calculated for various values of the field strength B. Qualitative properties of these trajectories are examined. With use of a scaling law, it is shown that the equations of motion can be written in a form such that they depend upon only one parameter, which may be regarded as a reduced angular momentum (proportional to LzB13). For small values of this parameter there is an "elliptical regime" in which the trajectory may be regarded as a Kepler ellipse with orbital parameters that evolve slowly in time. For large values …
Construction Of A Multidimensional Potential Energy Surface From An Energy Spectrum, Robert Leonard Waterland, John B. Delos
Construction Of A Multidimensional Potential Energy Surface From An Energy Spectrum, Robert Leonard Waterland, John B. Delos
Arts & Sciences Articles
A method for the systematic construction of a multidimensional potential energy surface from an energy spectrum is presented. We show that if the Hamiltonian and the energy spectrum satisfy certain conditions then there is an inversion technique which gives a potential energy function from the spectrum. The method proceeds via a sequence of canonical transformations and leads to a potential energy which is symmetric in all its variables. We test the procedure for one‐ and two‐dimensional examples and show that it gives reasonable results. However, the method does not give a unique result and we discuss two types of nonuniqueness …
Summary Report On The Calibration Of The Water Quality Models Of The Chesapeake Bay System, H. S. Chen, Paul V. Hyer, Y. Unkulvasapaul, Bruce Neilson
Summary Report On The Calibration Of The Water Quality Models Of The Chesapeake Bay System, H. S. Chen, Paul V. Hyer, Y. Unkulvasapaul, Bruce Neilson
Reports
The intended use of the water quality model was to predict the levels of important water quality parameters. in particular the dissolved oxygen levels and the algal populations. for alternative sets of nutrient loadings. The goals of the present modelling study were to apply appropriate models to the Chesapeake Bay system. to adjust the models so that they accurately simulated conditions in the prototype and to use those models to predict conditions under a number of nutrient loading scenarios. This report provides a summary of the work done to satisfy the first two of those three objectives.
Electron Detachment In Negative-Ion Collisions. Ii. The Dynamical Complex Potential, T. S. Wang, John B. Delos
Electron Detachment In Negative-Ion Collisions. Ii. The Dynamical Complex Potential, T. S. Wang, John B. Delos
Arts & Sciences Articles
No abstract provided.
Electron Detachment In Negative-Ion Collisions. I. Time-Dependent Theory And Models For A Propagator, T. S. Wang, John B. Delos
Electron Detachment In Negative-Ion Collisions. I. Time-Dependent Theory And Models For A Propagator, T. S. Wang, John B. Delos
Arts & Sciences Articles
A theory of electron detachment in slow collisions of negative ions with atoms is developed. The theory is based on assumptions that are similar to, but more general than, the assumptions made in earlier papers: The motion of the nuclei is described semiclassically, the electronic wave function is expanded in a partially diabatic basis that includes a discrete state and a continuum, and certain couplings are assumed to be small. With such assumptions the Schrödinger equation is reduced to a nondenumerably infinite set of coupled differential equations, and then to a single integro-differential equation (an equation with "memory"). It is …
Sea Grant College Designation Program, Virginia Institute Of Marine Science, School Of Marine Science, College Of William And Mary
Sea Grant College Designation Program, Virginia Institute Of Marine Science, School Of Marine Science, College Of William And Mary
Miscellaneous
October 25, 1984. The designation of the Virginia Sea Grant Program as the nation's twentieth National Sea Grant College Program in January 1984, recognized that the Sea Grant activities in Virginia were providing state and national leadership in the marine sciences and related fields.
Monthly Report On The State Of Rivers 1984, Albert Kuo
Monthly Report On The State Of Rivers 1984, Albert Kuo
Reports
Chiefly graphs showing monthly salinity, temperature, dissolved oxygen distributions at slackwater for the James, York, Pamunkey, and Rappahannock Rivers.
1984: April, May, June, July, August, September, October
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.
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 …
Kepone Uptake: A Comparison Of Field And Laboratory Data, Micheal E. Bender, Robert J. Huggett, Harold D. Sloane
Kepone Uptake: A Comparison Of Field And Laboratory Data, Micheal E. Bender, Robert J. Huggett, Harold D. Sloane
VIMS Books and Book Chapters
The ability to predict the environmental fate and effects of pollutants in the marine environmenits of utmost importance in assessing the hazards posed by a compound's use and/or disposal. Most commonly utilized methods to establish potential environmental effects have involved an assessment with bioassays of a compound's acute and chronic toxicity. For compounds that have the ability to bioaccumulate, the potential dangers from this process must also be determined. A "first cut" estimate can be made by determining the partition coefficients between an organic solvent, usually n-octanol, and water. If this coefficient exceeds 25,000, EPA requires a report of the …
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.
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 …
Oyster Spatfall In Virginia Rivers: 1983 Annual Summary, James Whitcomb
Oyster Spatfall In Virginia Rivers: 1983 Annual Summary, James Whitcomb
Reports
The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells are counted each week of ~:he spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period tile strikes will occur. A moderate or heavy strike on shellstrings usually indicates a significant strike on exposed bottom clutch. This is especially true for clutch planted a …
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.
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.
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.
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.
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 …
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 …
Virginia Institute Of Marine Science Plan In Support Of The Chesapeake Bay Research And Submerged Aquatic Vegetation Initiatives Of The Commonwealth Of Virginia, Virginia Institute Of Marine Science
Virginia Institute Of Marine Science Plan In Support Of The Chesapeake Bay Research And Submerged Aquatic Vegetation Initiatives Of The Commonwealth Of Virginia, Virginia Institute Of Marine Science
Reports
No abstract provided.
Final Report To The Coastal Erosion Abatement Commission, Commonwealth Of Virginia Concerning The Inventory Of Sand Supplies In The Southern Chesapeake Bay, Carl H. Hobbs Iii, Robert J. Byrne, Robert A. Gammish
Final Report To The Coastal Erosion Abatement Commission, Commonwealth Of Virginia Concerning The Inventory Of Sand Supplies In The Southern Chesapeake Bay, Carl H. Hobbs Iii, Robert J. Byrne, Robert A. Gammish
Reports
This final report to the Coastal Erosion Abatement Commission concerning the inventory of sand supplies in the southern portion of Chesapeake Bay is a continuation of the work reported on in September 1981 (Byrne et al). The report includes technical appendices in addition to the general text.
Vegetative Erosion Control Project : Final Report, C. Scott Hardaway Jr., George Thomas, Andrew W. Zacherle, B. Keith Fowler
Vegetative Erosion Control Project : Final Report, C. Scott Hardaway Jr., George Thomas, Andrew W. Zacherle, B. Keith Fowler
Reports
The Vegetative Erosion Control (VEC) project is a four-year study with coordinated efforts by the Virginia Soil and Water Conservation Commmission (VS&WCC) through their Shoreline Erosion Advisory Service (SEAS), the Soil Conservation Service (SCS) and the Virginia Institute of Marine Science (VIMS). Initial funding was appropriated in 1980 following the recommendation of the Coastal Erosion Abatement Commission and contracted out to the SCS and VIMS by the VS&WCC, the lead agency. (...)
The purpose of the VEC project is to supplement previous research with detailed site analysis of the early stages of marsh development and to more precisely define the …
Trace Organic Analyses Of Effluent Waters From A Model Slurry Pipeline Carrying Appalachian Bituminous Coal : Final Report, P. O. Defur, W. G. Macintyre
Trace Organic Analyses Of Effluent Waters From A Model Slurry Pipeline Carrying Appalachian Bituminous Coal : Final Report, P. O. Defur, W. G. Macintyre
Reports
Effluent waters from a model coal slurry pipeline have been analyzed for trace dissolved organic compounds. The model pipeline was operated under conditions simulating those proposed for a slurry pipeline from the region of Bristol to Hampton Roads, Virginia. Acidic, neutral and basic organic compounds in the separated waters were determined. Concentrations of individual compounds detected were generally less than 0.5 ppb and never exceeded 6 ppb. Adsorption experiments using coal slurry sorbents indicate that coal particles act as sorbing surfaces under coal slurry pipeline transport conditions.
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 …
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.
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.