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Articles 781 - 794 of 794
Full-Text Articles in Physical Sciences and Mathematics
The Virginia Flood Of 1969 : The Effects Of Hurricane Camille In The James River Basin Of Virginia, Donovan Kelly
The Virginia Flood Of 1969 : The Effects Of Hurricane Camille In The James River Basin Of Virginia, Donovan Kelly
Reports
No abstract provided.
Study Of Channel Sediments, James River & Hampton Roads Area, R. J. Huggett
Study Of Channel Sediments, James River & Hampton Roads Area, R. J. Huggett
Reports
Bottom sediment samples were collected from 3 locations transecting the channel in the lower James and Elizabeth rivers.
Polychlorinated Biphenyls In The Elizabeth River : Final Report, Robert J. Huggett
Polychlorinated Biphenyls In The Elizabeth River : Final Report, Robert J. Huggett
Reports
For the past eight years, the Virginia Institute of Marine Science has been a participant of the National Pesticide Monitoring Program. Within the framework of this program, oyster samples have been collected from areas throughout the Chesapeake Bay.and analyzed for chlorinated hydrocarbon pesticides. The data from the last three years show that polychlorinated biphenyls (PCB's) are being concentrated by the eastern oyster, Crassostrea virginica. The highest concentrations found were always from one station, Hospital Point, in the Elizabeth River. Samples from this station, collected during the spring of 1971, contained residues of the PCB, Aroclor(R) 1254 of 2.8 ppm. For …
Origin Of Mound Structures Within The Salt Marsh Of Parramore Island, Virginia, Jonathan P. Cooper
Origin Of Mound Structures Within The Salt Marsh Of Parramore Island, Virginia, Jonathan P. Cooper
Reports
The small circular mounds on Parramore Island have puzzled many people because of their amazing circularity and apparent lack of any trend but a south-southwest trend following the present coastline. In the middle of the island, aerial photographs show that the mounds generally decrease in size near their northern limit and the bare sandy tops disappear as the smaller mounds are completely covered with trees. The southernmost mounds are completely surrounded by salt marsh facies as compared to the dune facies in which the mounds are located to the north.
There has been much speculation as to the origin of …
Utilization Of Physical And Mathematical Models In Marine Water Resources Research, Planning And Management : A Final Report, Willliam J. Hargis Jr.
Utilization Of Physical And Mathematical Models In Marine Water Resources Research, Planning And Management : A Final Report, Willliam J. Hargis Jr.
Reports
During the period 1 September 1967 to 30 September 1969, Virginia Institute of Marine Science personnel were engaged in hydraulic model studies, mathematical and computer studies; and instrument and technique development. An investigation was made into the stability and reproducibility of an estuarine hydraulic model.
Studies were made of the dispension of point-source dye releases in an estuarine hydraulic model, and of the applicability of the results to the release of disease-resistant seed oysters.
Analytical studies were made of diffusion in estuaries and of the integro-differential equations for estuarine 'flow. Computer studies were made of two-dimensional estuarine circulation and of …
Characteristics Of Sediments In The James River Estuary, Virginia, Richard Moncure, Maynard Nichols
Characteristics Of Sediments In The James River Estuary, Virginia, Richard Moncure, Maynard Nichols
Reports
This report presents data on the physical and chemical characteristics of bottom sediments in the James River estuary, Virginia. The data were generated as part of a comprehensive study of sedimentation in which the initial objective was to broadly define the distribution of sediment properties.
Report To The York River Oyster Research Corporation On The Physiological Response Of Oysters To Several Polymeric Materials And Their Derivatives, Dexter S. Haven
Report To The York River Oyster Research Corporation On The Physiological Response Of Oysters To Several Polymeric Materials And Their Derivatives, Dexter S. Haven
Reports
The physiological responses of several polymeric materials and their derivatives, associated with the manufacturing process of pulp, were tested on oysters. It was thought that, when fed in small quantities, these substances might increase shell or meat size or be of value as possible nutritive supplements . The substances tested were divided into two classes. The first, consisting of basic polymeric materials, may occur in natural water s as the result of chemical changes. Representatives of these were indulin C and dextrose. The second class is composed of chemically pure derivatives of the preceding substances. These may appear in trace …
Concentration Of Suspended Radioactive Wastes Into Bottom Deposits., Dexter S. Haven
Concentration Of Suspended Radioactive Wastes Into Bottom Deposits., Dexter S. Haven
Reports
During recent years rapid advances in nuclear technology have increased the probability of accidental contamination of our coastal estuarine waters by several routes. The chances of such contamination appear remote, but in the event of a nuclear accident, it would be imperative to understand processes which will disperse or concentrate radioactive materials. In coastal waters the disposal or transport of radionuclides in concentrations exceeding the maximum permissible concentration is affected by tidal action and by the volume of inflowing fresh waters. During the period of transport by coastal or estuarine currents, physical and chemical forces will produce abiotic sedimentation. The …
Heavy Metals Tolerance Limits : Terminal Progress Report, M. L. Brehmer
Heavy Metals Tolerance Limits : Terminal Progress Report, M. L. Brehmer
Reports
The toxicity of .metal ions Lo fresh-water organisms has received considerable attention but little is known regarding their effects on estuarine and marine forms. These studies were initiated to aid in the evaluation of marine pollution problems.
The Ugly Faces Of Pollution, Morris L. Brehmer, Fred C. Biggs
The Ugly Faces Of Pollution, Morris L. Brehmer, Fred C. Biggs
Reports
- Pt. 1. [no title]
- pt. 2. Toxic wastes
- pt. 3. Oxygen-removing wastes
- pt. 5. Over-enrichment
- pt. 5. Other pollutants.
Hydrographic Data From The Atlantic Plankton Cruises Of The R/V Pathfinder, December 1959 - December 1960, Edwin B. Joseph, William H. Massmann, John J. Norcross
Hydrographic Data From The Atlantic Plankton Cruises Of The R/V Pathfinder, December 1959 - December 1960, Edwin B. Joseph, William H. Massmann, John J. Norcross
Reports
The data included in this report have resulted from a series of monthly offshore cruises conducted by the Ichthyology Research Section. The cruises were made to obtain information on the distribution and abundance of pelagic eggs and larvae of fishes. Since the biological results will be reported in a series of separate papers (Joseph, Massmann and Norcross, 1961), it was felt that the raw hydrographic data shpuld be made available in a single source.
The area covered is approximately 2500 square nautical miles of the neritic zone within the 20-fathom contour. The shore line encompasses the mouth of Chesapeake Bay …
Lower James River Pollution Study, City Point To Chickahominy, August 6 - September 6, 1951 : A Preliminary Report Of Findings, Conclusions And Recommendations, William H. Massman, Ernest C. Ladd
Lower James River Pollution Study, City Point To Chickahominy, August 6 - September 6, 1951 : A Preliminary Report Of Findings, Conclusions And Recommendations, William H. Massman, Ernest C. Ladd
Reports
Hopewell,m Virginia.is ·a highly industrialized city, the Celanese Corporation of .America, the Continental Can Company, the Hercules Powder Company and the Solvay Process: Division of· Allied Chemical and Dye Corporation having plants there. All of these plants have industrial and human wastes, the combined amount of which is great from. the standpoint of both volume and strength. In addition, there. are human wastes from the City cf Hopewell and its suburbs in Prince George County and from Camp Lee. All of those wastes, sewage and industrial are discharged into the James River, Bailey Creek and into other tributaries of the …
Review Of The Effects Of Ddt In The Blue Crab, Callinectes Sapidus, Willard A. Van Engel
Review Of The Effects Of Ddt In The Blue Crab, Callinectes Sapidus, Willard A. Van Engel
Reports
Notes on the usage and effects of DDT.
The Effect Of Ddt Spraying In The Langley-Messick Area, 1947, Willard A. Van Engel
The Effect Of Ddt Spraying In The Langley-Messick Area, 1947, Willard A. Van Engel
Reports
Observations and notes on the effects of DDT spraying.