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Articles 4111 - 4140 of 4568
Full-Text Articles in Physical Sciences and Mathematics
Gamma Ray Radiation Studies Of Undoped Gaas, William P. Winfree
Gamma Ray Radiation Studies Of Undoped Gaas, William P. Winfree
Dissertations, Theses, and Masters Projects
No abstract provided.
Depuration Of Kepone By Atlantic Croaker In A Laboratory Study, Robert T. Doyle, J. V. Merriner, M. E. Bender
Depuration Of Kepone By Atlantic Croaker In A Laboratory Study, Robert T. Doyle, J. V. Merriner, M. E. Bender
VIMS Books and Book Chapters
Contamination of the James River in Virginia by the organochlorine pesticide Kepone R prompted depuration studies of commercially important species. Approximately 400 croaker (Micropogonias undulatus) were taken from the James River and placed in Kepone-free York River water. Groups of 20 fish, maintained at ambient temperature, were sampled over time to determine depuration rate. Results suggest that there is no substantial depuration of Kepone by croaker until water temperature exceeds 15 C.
Shoreline Situation Report City Of Virginia Beach, Dennis W. Owen, Lynne C. Morgan, Nancy M. Sturm, Robert J. Byrne, Carl H. Hobbs Iii
Shoreline Situation Report City Of Virginia Beach, Dennis W. Owen, Lynne C. Morgan, Nancy M. Sturm, Robert J. Byrne, Carl H. Hobbs Iii
Reports
No abstract provided.
Shoreline Situation Report Northumberland County, Lynne C. Morgan, Dennis W. Owen, Margaret H. Peoples, Robert J. Byrne, Carl H. Hobbs Iii
Shoreline Situation Report Northumberland County, Lynne C. Morgan, Dennis W. Owen, Margaret H. Peoples, Robert J. Byrne, Carl H. Hobbs Iii
Reports
No abstract provided.
Bacterial Response To Crude Oil Spillage In A Salt Marsh, Russell Paul Herwig
Bacterial Response To Crude Oil Spillage In A Salt Marsh, Russell Paul Herwig
Dissertations, Theses, and Masters Projects
No abstract provided.
The Ultrastructure Of Cell Division In Male Reproductive Branches Of Polysiphonia Denudata, Cynthia Louise Bosco
The Ultrastructure Of Cell Division In Male Reproductive Branches Of Polysiphonia Denudata, Cynthia Louise Bosco
Dissertations, Theses, and Masters Projects
No abstract provided.
Semiclassical Calculation Of Vibrational Energy Levels Of Nonseparable Systems, Randall T. Swimm
Semiclassical Calculation Of Vibrational Energy Levels Of Nonseparable Systems, Randall T. Swimm
Dissertations, Theses, and Masters Projects
No abstract provided.
Demonstration Project In Low-Cost Shoreline Erosion Control : Final Report To County Administrator, County Of Accomack, Virginia, Gary L. Anderson, Robert L. Byrne, David W. Byrd, Gary M. Chianakas
Demonstration Project In Low-Cost Shoreline Erosion Control : Final Report To County Administrator, County Of Accomack, Virginia, Gary L. Anderson, Robert L. Byrne, David W. Byrd, Gary M. Chianakas
Reports
·1ow cost erosion control structures were installed at ten shoreline sites located in the lower Chesapeake Bay and on the Potomac and Rappahannock Rivers to further test the applicability of the perched beach concept under diverse littoral environments. The perched beach is achieved via installation of a low sill parallel to the shoreline. The objective of the sill is to provide a partial barrier behind which an elevated (perched) beach is accreted. When successful, ~he perched beach backshore and foreshore acts to reduce the frequency of direct wave attack against the fastland and thereby reducing the erosion rate. In this …
Shoreline Situation Report Lancaster County, Lynne C. Morgan, Dennis W. Owen, Nancy M. Sturm, Gaynor B. Williams, Robert J. Byrne, Carl H. Hobbs Iii
Shoreline Situation Report Lancaster County, Lynne C. Morgan, Dennis W. Owen, Nancy M. Sturm, Gaynor B. Williams, Robert J. Byrne, Carl H. Hobbs Iii
Reports
No abstract provided.
Evaluation Of Salinity And Temperature As Stress Factors Affecting The Enumeration Of Fecal Coliforms By The Electrochemical Detection Method, Howard I. Kator, Martha W. Rhodes
Evaluation Of Salinity And Temperature As Stress Factors Affecting The Enumeration Of Fecal Coliforms By The Electrochemical Detection Method, Howard I. Kator, Martha W. Rhodes
Reports
The ability of an electrochemical detection method to predict viable numbers of fecal coliforms was evaluated under laboratory conditions with respect to seawater adjusted to various salinities and temperatures. The viability of an Escherchia coli isolat~ as measured by the spread plate technique utilizing non-selective media was unaffected after 12 wk exposure at 2°C and 25 °100 salinity. At higher temperatures (15-30°C) both the total decrease in cell numbers as well as the rates of die-off were greater than at 2°C. There was little apparent difference in viability across the temperature range 15-30°C. Viability was observed to be inversely related …
Offshore Pipeline Corridors And Landfalls In Coastal Virginia Volume One, Ann H. Rooney-Char, R. Ayres
Offshore Pipeline Corridors And Landfalls In Coastal Virginia Volume One, Ann H. Rooney-Char, R. Ayres
Reports
This report is a product of the Virginia Coastal Resources Management (CRM) Program. Along with other coastal states, Virginia is preparing a management program for coastal land and water resources and uses under grants from the Office of Coastal Zone Management (OCZM), of the U.S. Department of Commerce. The Coastal Zone Management Act of 1972, as amended in 1976, enumerates the elements which coastal states and their political subdivisions must include in their program. This report commences the response of the Commonwealth of Virginia to the national concern expressed in Sec. 305(B) (8) of the Act, that is, that states …
Offshore Pipeline Corridors And Landfalls In Coastal Virginia Volume Two - Appendices, Ann H. Rooney-Char, R. Ayres
Offshore Pipeline Corridors And Landfalls In Coastal Virginia Volume Two - Appendices, Ann H. Rooney-Char, R. Ayres
Reports
This report is a product the Virginia Coastal Resources Management (CRM) Program. Along with other coastal states, Virginia is preparing a mangement program for coastal land water resources and uses under grants from the Office of Coastal Zone Management (OCZM), National Oceanic and Atmospheric Administration, of the U.S. Department of Commerce. The Coastal Zone Management Act of 1972, as amended in 1976, enumerates the elements which coastal states and their political subdivisions must include in their program. This report commences the response of the Comm~nwealth of Virginia to the national concern expressed in Sec. 305(B) (8) of the Act, that …
Kepone In Bed Sediments Of The James River Estuary, Richard C. Trotman, Maynard N. Nichols
Kepone In Bed Sediments Of The James River Estuary, Richard C. Trotman, Maynard N. Nichols
Reports
This report describes procedures and presents data concerning the concentrations of Kepone in bed sediments of the James River estuary, Virginia.
Intensive Hydrographical And Water Quality Survey Of The Chincoteague/Sinepuxent/Assawoman Bay Systems : Volume Iii. Non-Point Source Pollution Studies In The Chincoteague Bay System, C. F. Cerco, C. S. Fang, A. Rosenbaum
Intensive Hydrographical And Water Quality Survey Of The Chincoteague/Sinepuxent/Assawoman Bay Systems : Volume Iii. Non-Point Source Pollution Studies In The Chincoteague Bay System, C. F. Cerco, C. S. Fang, A. Rosenbaum
Reports
No abstract provided.
Operation Hiflow '78, Rappahannock River Estuary, Virginia, March-April 1978 : An Investigation Of Sediment Influx And Hydrodynamics, Institutions Of The Chesapeake Research Consortium And Sea Grant Programs
Operation Hiflow '78, Rappahannock River Estuary, Virginia, March-April 1978 : An Investigation Of Sediment Influx And Hydrodynamics, Institutions Of The Chesapeake Research Consortium And Sea Grant Programs
Reports
The prime purposes of HIFLOW 78 are to determine: 1. The response of an estuarine system to high river inflow and influx of suspended sediment. 2. The hydrodynamic interactions between a major tributary estuary and the main body of the Chesapeake Bay.
Beach Erosion And Accretion At Virginia Beach, Victor Goldsmith, Susan C. Strum, George R. Thomas, Coastal Engineering Research Center (U. S. )
Beach Erosion And Accretion At Virginia Beach, Victor Goldsmith, Susan C. Strum, George R. Thomas, Coastal Engineering Research Center (U. S. )
Reports
This report is published to provide coastal engineers with a description of beach erosion and accretion at Virginia Beach, Virginia, including the effect of continuing beach replenishment, and the apparent unimportance of land use in determining erosion. This report also provides bench-mark data on coastal processes at the shore north of the CERC Field Research Facility at Duck, North Carolina. The work was carried out under the beach evaluation program of the U.S. Army Coastal Engineering Research Center (CERC).
Intensive Hydrographical And Water Quality Survey Of The Chincoteague/Sinepuxent/Assawoman Bay Systems Volume I: Study Program, C. S. Fang, A. Rosenbaum, J. P. Jacobson, P. V. Hyer
Intensive Hydrographical And Water Quality Survey Of The Chincoteague/Sinepuxent/Assawoman Bay Systems Volume I: Study Program, C. S. Fang, A. Rosenbaum, J. P. Jacobson, P. V. Hyer
Reports
No abstract provided.
Ecological Study Of The Tidal Segment Of The James River Encompassing Hog Point : 1976 Final Technical Report, R. A. Jordan, P. A. Goodwin, R. K. Carpenter, J. V. Merriner, A. D. Estes, R. K. Dias
Ecological Study Of The Tidal Segment Of The James River Encompassing Hog Point : 1976 Final Technical Report, R. A. Jordan, P. A. Goodwin, R. K. Carpenter, J. V. Merriner, A. D. Estes, R. K. Dias
Reports
- Section I: : Contents River Biota Studies at the VEPCO Surry Nuclear Power Station by R. A. Jordan, P. A. Goodwin, and R. K. Carpenter
- Section II a: Plant Entrainment of Ichthyoplankton at the VEPCO Nuclear Power Plant by J. V. Merriner, A. D. Estes, and R. K. Dias
- Section II b: Thermal Plume Entrainment of Ichthyoplankton at VEPCO Nuclear Power Station by J. V. Merriner, A. D. Estes, and R. K. Dias
Recent History And Response Characteristics Of Wachapreague Inlet, Virginia : Final Report, Robert J. Byrne, Joseph T. Dealteris, Jerome P. Sovich
Recent History And Response Characteristics Of Wachapreague Inlet, Virginia : Final Report, Robert J. Byrne, Joseph T. Dealteris, Jerome P. Sovich
Reports
Wachapreague Inlet, a large downdrift offset inlet in the barrier island complex of the mid-Atlantic coast (Delmarva peninsula), was studied during the period 1971-1974. The inlet channel width is bout 500 m and the throat cross-sectional is about 4,500 m2 • The inlet channel is about 3 km in length, approximately one-half of which is within the well-developed horseshoe shaped ebb delta complex. The maximum channel depth is 20 rn which occurs at the throat. Elements of the study included: (1) the inlet morphornetric history (120 years), (2) assessment of surficial and sub-bottom sediments within the inlet complex, (3) determination …
Assessment Of Mechanical Damage To Entrained Ichthyoplankton, Vepco Surry Nuclear Power Station, J. V. Merriner, A. D. Estes
Assessment Of Mechanical Damage To Entrained Ichthyoplankton, Vepco Surry Nuclear Power Station, J. V. Merriner, A. D. Estes
Reports
Thermal plume ichthyopla~kton sampling during November and December 1976 was cancelled since Units 1 and 2 of VEPCO Surry Nuclear Power Station were non-operational due to refueling. In lieu of the thermal plume ichthyoplankton entrainment program, a sampling program to estimate mortality from mechanical damage was initiated.
Four sampling sites were selected for determination of quantity and condition of organisms entering and leaving the plant. Sites were selected at points preceding and following critical areas where the likelihood of damage was greatest. Net .sets were made using a 0.5 meter paired net apparatus. All sets were at bottom strata to …
Characterization Of A Historically Nutrient Enriched Marsh Ecosystem : Yorktown Creek, Yorktown, Virginia, R. L. Wetzel, M. S. Kowalski, W. M. Rizzo, A. Thompson, K. L. Webb
Characterization Of A Historically Nutrient Enriched Marsh Ecosystem : Yorktown Creek, Yorktown, Virginia, R. L. Wetzel, M. S. Kowalski, W. M. Rizzo, A. Thompson, K. L. Webb
Reports
In this report, we summarize our initial findings of a nutrient enriched aquatic ecosystem prior to relaxation of sewage input. The studies reported were directed toward characterizing the system prior to relaxation and to begin xperimental studies to accomplish our general objectives.
Application Of Numerical Classification In Ecological Investigations Of Water Pollution, Donald F. Boesch
Application Of Numerical Classification In Ecological Investigations Of Water Pollution, Donald F. Boesch
Reports
No abstract provided.
Generalization Of The Rosen-Zener Model Of Noncrossing Interactions. I. Total Cross Sections, T. R. Dinterman, John B. Delos
Generalization Of The Rosen-Zener Model Of Noncrossing Interactions. I. Total Cross Sections, T. R. Dinterman, John B. Delos
Arts & Sciences Articles
The formalism developed previously to study electronic transitions by the curve-crossing mechanism is used to obtain a general model for transitions which take place due to the strong coupling of curves which do not cross. This exactly solvable model is a generalization of a model developed by Rosen and Zener. The model is shown to give respectable agreement with exact calculations at low velocities, and to go to the correct resonant-charge-exchange limit at high velocities. Predictions of the model are shown to give good agreement with the measured total cross sections for charge exchange in the sytem Li+ + Na⇄Li+Na+.
Generalization Of The Rosen-Zener Model Of Noncrossing Interactions. Ii. Differential Cross Sections., T. R. Dinterman, John B. Delos
Generalization Of The Rosen-Zener Model Of Noncrossing Interactions. Ii. Differential Cross Sections., T. R. Dinterman, John B. Delos
Arts & Sciences Articles
The generalized Rosen-Zener model developed in the accompanying paper is used to calculate differential cross sections for a model noncrossing system, and the structure of the cross sections is explained in terms of the deflection functions. It is found that the angular threshold effects that are typical of potential-curve crossings do not appear in this noncrossing system.
Environmental Effects Of James River Sewage Treatment Plant Outfall Construction, Dexter S. Haven, Paul C. Kendall, Robert J. Diaz, Donald F. Boesch, Michael E. Bender
Environmental Effects Of James River Sewage Treatment Plant Outfall Construction, Dexter S. Haven, Paul C. Kendall, Robert J. Diaz, Donald F. Boesch, Michael E. Bender
Reports
In the spring of 1975 the Institute began a program to determine whether significant environmental changes would occur in the area of the new James River Plant outfall that might be related to its construction and/or initial operation. Parameters measured in the study were benthic animal and oyster populations, coliform levels and chlorine residuals. The primary emphasis of the study centered on the estimation of the impact of the construction activity on shellfish beds in the area. The results of the investigation are presented in three segments, the first dealing with shellfish populations, the second with other benthic animals and …
Forecasting Beach Erosion Along The Oceanic Coastlines Of The Northeast And Mid-Atlantic States, William S. Richardson
Forecasting Beach Erosion Along The Oceanic Coastlines Of The Northeast And Mid-Atlantic States, William S. Richardson
Dissertations, Theses, and Masters Projects
No abstract provided.
The Nesting Ecology Of Several Species Of Herons And The Glossy Ibis (Plegadis Falcinellus) In Three Heronries In Virginia, Barbara Susan Warren
The Nesting Ecology Of Several Species Of Herons And The Glossy Ibis (Plegadis Falcinellus) In Three Heronries In Virginia, Barbara Susan Warren
Dissertations, Theses, and Masters Projects
No abstract provided.
Theory Of Amorphous Copper-Nickel Alloys, Kun-San Chang
Theory Of Amorphous Copper-Nickel Alloys, Kun-San Chang
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Petroleum Hydrocarbons On Salt Marsh Communities, Carleton H. Hershner Jr.
Effects Of Petroleum Hydrocarbons On Salt Marsh Communities, Carleton H. Hershner Jr.
Dissertations, Theses, and Masters Projects
This dissertation is from the Joint Program Degree from the College of William & Mary and University of Virginia and awarded by the University of Virginia.
The effects of petroleum hydrocarbons on salt marsh grasses and gastropods were examined under three different circumstances. In the first study reported, a small pocket marsh was repeatedly dosed with small amounts of a No. 2 fuel oil. The second study investigated the effects of a large accidental spill of No. 6 fuel oil. The third study involved single doses of a fresh and a weathered crude oil on artificially enclosed segments of marsh.
The Effects Of Pollution On Benthic Communities Of The Tidal James River, Virginia, Robert J. Diaz
The Effects Of Pollution On Benthic Communities Of The Tidal James River, Virginia, Robert J. Diaz
Dissertations, Theses, and Masters Projects
Benthic communities in the estuarine portion of the James River are controlled mainly by salinity. Pollution effects are localized and difficult to assess because of the rigorous physical environment. Mesohaline and oligohaline communities were very similar to those in other east coast estuaries. except for the dominance of Rangia cuneata in the oligohaline zone. Communities of the tidal freshwater zone are most affected by pollution. In the areas of Richmond and Hopewell, where the major portion of the pollution load enters the river, communities are most severely depressed. Separate multivariate analyses of species distributional patterns, and pollution and physical parameters …