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Articles 37471 - 37500 of 39785
Full-Text Articles in Physical Sciences and Mathematics
Fluctuations And Relationships Of Selected Physiochemical Parameters In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson
Fluctuations And Relationships Of Selected Physiochemical Parameters In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson
Journal of the Arkansas Academy of Science
Annual and seasonal fluctuations and relationships are described for discharge, turbidity, chloride, total hardness, conductivity and suspended solids over an eight-year period in Dardanelle Reservoir. The parameters fluctuated rather widely primarily in response to seasonal patterns of rainfall. Chloride and conductivity were related and generally fluctuated together as did turbidity and suspended solids. Hardness appeared to vary independently of the others prior to 1979 then varied more closely with chloride after March 1979. Inherent differences between the Illinois Bayou arm and the main Arkansas River sections complicated the precise identification of any overall impact of power plant operation. No significant …
Changes In Forest Soils Following Clearcutting Of Pine Forests In The Ouachita Mountains Of Arkansas, Harlan R. Stoin, Bajuri Bin Kadmin, Lyell F. Thompson
Changes In Forest Soils Following Clearcutting Of Pine Forests In The Ouachita Mountains Of Arkansas, Harlan R. Stoin, Bajuri Bin Kadmin, Lyell F. Thompson
Journal of the Arkansas Academy of Science
Soil characteristics of the mineral surface soil (0-6 cm) on three small watersheds in the Ouachita Mountains of Arkansas from which the pine forests have been clearcut, crushed, and burned for site preparation were studied for the first two years following clearcutting and compared to soils from adjacent uncut pine forest watersheds. Following clearcutting and burning, soil pH was generally higher than in uncut forest soils. The greatest pH differences occurred within several months of burning and generally decreased through the end of the second year. Soil organic matter content was lower immediately following clearcutting and burning and increased to …
Cognitive Coordinate Systems: Accounts Of Mental Rotation And Individual Differences In Spatial Ability, Marcel Adam Just, Patricia A. Carpenter
Cognitive Coordinate Systems: Accounts Of Mental Rotation And Individual Differences In Spatial Ability, Marcel Adam Just, Patricia A. Carpenter
Marcel Adam Just
No abstract provided.
An Analysis Of The Effect Of Network Load And Topology On The Performance Of Concurrency Control Algorithm In Distributed Database Systems, Anoop Singhal, Amit P. Sheth, Ming T. Liu
An Analysis Of The Effect Of Network Load And Topology On The Performance Of Concurrency Control Algorithm In Distributed Database Systems, Anoop Singhal, Amit P. Sheth, Ming T. Liu
Kno.e.sis Publications
Earlier studies in the performance analysis of concurrency control algorithms in distributed database systems (DDBS) have assumed that the message transmission time between any two nodes of a network is constant. Hence they disregard the effect of communication subnet related parameters such as network traffic, network topology, the capacity of transmission channels and the size of messages transmitted. In this paper an analytical model is used to estimate the delays in transmission channels for a DDBS in a long haul network. The analysis shows that the constant transmission time assumption cannot be justified in many cases and that response time …
Benthic Diatom Community Dynamics In The Colorado River: Interactive Effects Of Periodic Dessication And Current Regime, Christopher Gerard Peterson
Benthic Diatom Community Dynamics In The Colorado River: Interactive Effects Of Periodic Dessication And Current Regime, Christopher Gerard Peterson
Publications (WR)
The response to periodic desiccation of periphyton communities developed in eddy environments or in areas exposed to variable, direct current was examined. Algal communities were incubated on clay tiles for between 2 and 12 weeks in the Colorado River, directly below Hoover Dam from October, 1983 - January, 1984. Mean daily discharge from the dam decreased over this period. To assess the influence of these discharge changes on community dynamics, samples collected over the first 12 weeks of the investigation were compared to samples of the same age collected over the final 8 weeks.
The small diatom taxon Achnahthes spp …
The Prairie Naturalist Volume 16, No. 4. December 1984
The Prairie Naturalist Volume 16, No. 4. December 1984
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
VEGETATION PATTERNS IN RELATION TO TOPOGRAPHY AND EDAPHIC VARIATIONS IN NEBRASKA SAND HILLS PRAIRIE ▪ P. W. Barnes, A. T. Harrison and S. P. Heinisch
GREAT BLUE HERON NESTING BIOLOGY ON THE JAMES RIVER IN SOUTH DAKOTA ▪ E. M. Dowd and L. D. Flake
OVENBIRDS AT THE PERIPHERY OF THEIR RANGE IN WESTERN NORTH DAKOTA ▪ R. B. Hopkins
BREEDING BIRD COMMUNITY COLONIZATION OF SOWN STANDS OF NATIVE GRASSES IN NORTH DAKOTA ▪ K. F. Higgins, T. W. Arnold and R. …
A Proposal To Fertilize The Overton Arm And Gregg Basin Areas Of Lake Mead, Larry J. Paulson
A Proposal To Fertilize The Overton Arm And Gregg Basin Areas Of Lake Mead, Larry J. Paulson
Publications (WR)
Several limnological studies have been conducted in Lake Mead during the past decade. The recent studies clearly show that most of Lake Mead is deficient in nutrients, especially phosphorus, and very low in productivity. The reservoir-wide average total phosphorus concentration for 1981 - 1982 was only 9 mg/m3. This is below levels found In most oligotrophic lakes and reservoirs. Algal biomass, as measured by chlorophyll-a, averaged only 1.5 mg/m3. That also places Lake Mead in the oligotrophic range. Transparency, as measured by a Secchi disc, averaged 9-5 m in Lake Mead during 1981-1982. That far exceeds …
Expression Of Epstein-Barr Virus (Ebv) Dna And Cloned Dna Fragments In Human Lymphocytes Following Sendai Virus Envelope-Mediated Gene Transfer, David J. Volsky, Thomas Gross, Faruk Sinangil, Charles Kuszynski, Ronald Bartzatt, Timothy Dambaugh, Elliott Kieff
Expression Of Epstein-Barr Virus (Ebv) Dna And Cloned Dna Fragments In Human Lymphocytes Following Sendai Virus Envelope-Mediated Gene Transfer, David J. Volsky, Thomas Gross, Faruk Sinangil, Charles Kuszynski, Ronald Bartzatt, Timothy Dambaugh, Elliott Kieff
Chemistry Faculty Proceedings & Presentations
Purified EBV DNA and cloned DNA fragments were trapped in Sendai virus (SV) envelopes during envelope reconstitution. The DNA-loaded reconstituted envelopes (RSVE/DNA) served as gene-transfer vehicles using the capability of RSVE to fuse with normal and tumor cells. The efficiency of RSVE-mediated EBV DNA transfer into lymphoid tumor cells and fresh human lymphocytes was 5-10% of the enveloped 3H-labeled EcoRI fragment B of EBV DNA. Purified intracellular EBV (B95-8 strain) DNA induced EBV nuclear antigen (EBNA) in 0.2-1% of human lymphocytes, transiently stimulated cellular DNA synthesis, but did not fully transform cells. Cloned Sal I F1 fragment [approximately equal to …
The Effects Of X-Irradiation On The Metamorphosis And Budding Of Aurelia Aurita, Michael John Prokopchak
The Effects Of X-Irradiation On The Metamorphosis And Budding Of Aurelia Aurita, Michael John Prokopchak
OES Theses and Dissertations
With the aid of the Aurelia Metamorphosis Test System, the acute or subtle morphological and behavioral effects of irradiation on the Norfolk Aurelia aurita were described and the sensitivity to X-irradiation of those organisms receiving thyroxine and those not receiving thyroxine was compared. Levels of radiation were 0 (control), 5,000, 10,000, 15,000, 20,000 and 40,000 rads. Morphology of the ephyrae, statolith and rhopalia numbers were recorded using the light microscope, Developmental abnormalities of the scyphistomae and ephyrae were recorded with the scanning electron microscope and light microscope. Two major findings from this investigation were the absence of rhopalia and statoliths …
The Prairie Naturalist Volume 16, No. 3. September 1984
The Prairie Naturalist Volume 16, No. 3. September 1984
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
GRASSLAND HABITAT MANAGEMENT USING PRESCRIBED BURNING IN WIND CAVE NATIONAL PARK, SOUTH DAKOTA ▪ J. D. Forde, N. F. Sloan and D. A. Shown
BODY TEMPERATURES AND BEHAVIORAL ACTIVITIES OF HIBERNATING
PRAIRIE RATTLESNAKES, Crotalus viridis, IN ARTIFICIAL DENS ▪ K. R. Marion and O. J. Sexton
NEW VASCULAR PLANT RECORDS FOR NORTH DAKOTA ▪ D. T. Disrud, W. T. Barker and R. H. Warner
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1983 ▪ R. N. Randall
COMPARISON OF PLANKTON POPULATIONS IN THREE …
The Phillipine Extended Jurisdiction: Its Cost And Benefits To Fishery Industry, Ricardo R. Federizon
The Phillipine Extended Jurisdiction: Its Cost And Benefits To Fishery Industry, Ricardo R. Federizon
Marine Affairs Theses and Major Papers
The Philippines is one of the countries that has its significant relations to fisheries economically and culturally. The coastal waters of the Philippines support over a million fishermen whose only source of income is fishing that does not go far off-shore. Due to population pressure and increased demand for fish as a basic food supply and as a source of foreign revenue income, more and more fishermen fish at the waters that carry a limited resource. As a result, overfishing persists that has a social and economic implication. Conflicts arise among the fishermen. Management measures are not implemented successfully because …
Toxicological Studies On Aquatic Contaminants Originating From Coal Production And Utilization: The Induction Of Tolerance To Silver In Laboratory Populations Of Fish And The Chronic Toxicity Of Nickel To Fish Early Life Stages, Wesley J. Birge, Jeffrey A. Black, James F. Hobson, Albert G. Westerman
Toxicological Studies On Aquatic Contaminants Originating From Coal Production And Utilization: The Induction Of Tolerance To Silver In Laboratory Populations Of Fish And The Chronic Toxicity Of Nickel To Fish Early Life Stages, Wesley J. Birge, Jeffrey A. Black, James F. Hobson, Albert G. Westerman
KWRRI Research Reports
Aquatic toxicity studies were performed on two important coal-derived contaminants, silver and nickel. Silver was investigated with regard to metal-induced tolerance in laboratory populations of the fathead minnow (Pimephales promelas). Fish were exposed to acute silver concentrations following acclimation to sublethal exposures of this metal. Based on median lethal times (LT50), animals which had received 14 days prior exposure to 1.5 and 15 μg Ag/L were three to four times more resistant to silver than were previously unexposed organisms. This metal-induced resistance was not a sustained response. After organisms which had been acclimated to 15 μg/L had been transferred to …
Winds Over Water: A Bibliography, Janet M. Witte
Winds Over Water: A Bibliography, Janet M. Witte
Marine & Environmental Sciences Faculty Reports
This bibliography was compiled as an outgrowth of the Satellite Surface Stress (S3) Working Group, which was sponsored by NASA/Goddard Space Flight Center and NASA/Jet Propulsion Laboratory (JPL) from the fall of 1982 to the spring of 1984 (Contracts NAS5-26714 and 956773). I wish to thank the Working Group Chairman, Dr. James J. O'Brien, for providing me with the impetus to compile this work. I also wish to thank the other members of the Working Group for adding their moral support (as well as many of the references).
The Spatial And Temporal Distribution Of The Larvae Of Sympatric Pagurid Hermit Crabs (Decapoda, Anomura) In Virginian Estaurine And Coastal Waters, Philip Wesley Sadler
The Spatial And Temporal Distribution Of The Larvae Of Sympatric Pagurid Hermit Crabs (Decapoda, Anomura) In Virginian Estaurine And Coastal Waters, Philip Wesley Sadler
OES Theses and Dissertations
Thirteen stations were occupied at two - week intervals from May through September 1980 within the York River, lower Chesapeake Bay depths encompassing the entire water column.
Three species of pagurids were identified: Pagurus longicarpus, P. pollicaris, and P. annulipes. The larvae of P. annulipes had not been previously identified from Virginian waters. The shapes of the antennae of P. pollicaris and P. annulipes weredistinctive, allowing rapid identification of these larvae. The shapes of the uropods were found to be useful in distinguishingthe glaucothoe· of P. longicarpus from P. annulipes. The larvae of these species …
[Section] 404 Panel Discussion, Gregory J. Hobbs, Jr.
[Section] 404 Panel Discussion, Gregory J. Hobbs, Jr.
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
5 pages.
Supplemental materials. Includes proposed bill language for Department of the Interior appropriations bill. Outline of key events and dates in the history of water law.
Panel: Section 404 Of The Clean Water Act And Section 7 Of The Endangered Species Act: Potential Impacts On Water Supplies [Supplemental Materials], Wendy C. Weiss
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
57 pages.
Supplemental materials. Includes text of Riverside Irrigation District v. Andrews, 568 F.Supp 563 and Opening Brief of Plaintiff-Intervenor-Appellants in Riverside Irrigation District v. Andrews, Cases No. 83-2114, 83-2115, 83-2119, 83-2230, April 3, 1984.
Groundwater Control Programs Affecting Water Development, Arthur L. Littleworth
Groundwater Control Programs Affecting Water Development, Arthur L. Littleworth
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
19 pages.
Ferc, Purpa And The Federal Power Act, Lawrence J. Wolfe
Ferc, Purpa And The Federal Power Act, Lawrence J. Wolfe
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
62 pages.
Contains references.
Wetlands Preservation And The Protection Of Endangered Species As Limits On Western Water Development, A. Dan Tarlock
Wetlands Preservation And The Protection Of Endangered Species As Limits On Western Water Development, A. Dan Tarlock
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
25 pages.
The Case For A Legislative Solution To Indian Water Claims, James M. Bush
The Case For A Legislative Solution To Indian Water Claims, James M. Bush
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
57 pages.
Instream Flows As Reserved Rights On Federal Reservations After United States V. New Mexico, Hank Meshorer
Instream Flows As Reserved Rights On Federal Reservations After United States V. New Mexico, Hank Meshorer
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
10 pages.
Effects Of The Clean Water Act On Water Availability And Development, Paula C. Phillips
Effects Of The Clean Water Act On Water Availability And Development, Paula C. Phillips
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
12 pages.
Reserved Water Rights Of Indian Allotments, Richard B. Collins
Reserved Water Rights Of Indian Allotments, Richard B. Collins
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
10 pages.
Contains references.
Agenda: The Federal Impact On State Water Rights, University Of Colorado Boulder. Natural Resources Law Center
Agenda: The Federal Impact On State Water Rights, University Of Colorado Boulder. Natural Resources Law Center
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
Conference organizers and/or speakers included University of Colorado School of Law professors James N. Corbridge, Jr., David H. Getches, Lawrence J. MacDonnell and Richard B. Collins.
In general, water rights are a matter of state law. However, the availability and development of water are affected by important federal rights, policies and programs. In this conference, an outstanding group of private practitioners, government representatives and academics consider this important topic.
Developments In Federal Water Policies And Programs, Harold W. Furman Ii
Developments In Federal Water Policies And Programs, Harold W. Furman Ii
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
14 pages.
Role Of The State Courts In Adjudicating Indian Water Rights, Jon L. Kyl
Role Of The State Courts In Adjudicating Indian Water Rights, Jon L. Kyl
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
39 pages.
Negotiation As A Means Of Quantifying Indian Water Rights, Joseph R. Membrino
Negotiation As A Means Of Quantifying Indian Water Rights, Joseph R. Membrino
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
88 pages.
Contains attachments.
Introduction To Reserved Water Rights, Ralph W. Johnson
Introduction To Reserved Water Rights, Ralph W. Johnson
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
16 pages.
Indian Water Rights In The Supreme Court: A Review And Preview, Louis F. Claiborne
Indian Water Rights In The Supreme Court: A Review And Preview, Louis F. Claiborne
The Federal Impact on State Water Rights (Summer Conference, June 11-13)
12 pages.
Withdrawals Of Public Lands Under The Federal Land Policy And Management Act, David H. Getches
Withdrawals Of Public Lands Under The Federal Land Policy And Management Act, David H. Getches
The Federal Land Policy and Management Act (Summer Conference, June 6-8)
17 pages.