137 Matching Results

Search Results

prev Results: 49 - 72 next
open access

An Analytical Investigation of the Effect of the Rate of Increase of Turbulent Kinetic Energy in the Stream Direction on the Development of Turbulent Boundary Layers in Adverse Pressure Gradients

Description: "The purpose of this paper is to provide a derivation of the general integral form of the boundary equation without neglecting the Reynolds normal-stress term. Two special cases of this equation are given explicitly" (p. 2).
Date: November 1953
Creator: Rashis, Bernard
Partner: UNT Libraries Government Documents Department
open access

An Analysis of the Variation With Altitude of Effective Gust Velocity in Convective-Type Clouds

Description: From Introduction: "In the present paper, the variation of effective gust velocity in convective-type clouds with altitude is investigated. Data obtained during 1941 and 1942 at altitudes up to 34,000 feet and data obtained more recently from the Thunderstorm Project (reference 5) at altitudes up to 26,000 feet are utilized for this purpose. Consideration is given in analyzing the results both to data for the range
Date: June 1948
Creator: Tolefson, H. B.
Partner: UNT Libraries Government Documents Department
open access

Analysis of the Ultimate Strength and Optimum Proportions of Multiweb Wing Structures

Description: From Introduction: "The results are presented in the form of a structural-efficiency chart where minimum structural weight is plotted as a function of the structural index for constant values of the ratio of wing depth to skin thickness."
Date: March 1956
Creator: Rosen, B. Walter
Partner: UNT Libraries Government Documents Department
open access

Accelerations and bottom pressures measured on a B-24D airplane in a ditching test

Description: From Introduction: "This report presents only that portion of the data from the first ditching which was to be used roughly establish the accelerations experienced by the pilot and the amount of water pressure to which the fuselage structure was subjected during the ditching."
Date: November 1944
Creator: Steiner, Margaret F.
Partner: UNT Libraries Government Documents Department
open access

Ancient Lavas in Shenandoah National Park Near Luray, Virginia

Description: Abstract: In the Blue Ridge Province of northern Virginia, Maryland, and southern Pennsylvania, Lower Cambrian beds are underlain by a thick sequence of greenstone and interbedded sedimentary rocks known as the Catoctin Formation. An area near Luray, Va., was studied to determine the thickness of the formation, its relationship to overlying and underlying rocks, and the original nature of the lavas from which the Catoctin greenstone was derived. There the Catoctin Formation lies unconformably … more
Date: 1969
Creator: Reed, John Calvin, Jr.
Partner: UNT Libraries Government Documents Department
open access

Tin Deposits of Irish Creek, Virginia

Description: From abstract: Cassiterite was discovered along Irish Creek in the Blue Ridge in the northern part of Rockbridge County, Va., in 1846, but active prospecting and development work were not begun until 1884. The production has been small, probably less than 1,000 tons of ore, and has come chiefly from workings on Panther Run, a small tributary near the headwaters of Irish Creek.
Date: 1942
Creator: Koschmann, A. H.; Glass, J. J. & Vhay, J. S.
Partner: UNT Libraries Government Documents Department
open access

Geology and Oil Resources of the Jonesville District, Lee County, Virginia

Description: From abstract: The Jonesville district is in central Lee County in the extreme southwest corner of Virginia. It includes an area that is 25 miles long from northeast to southwest and averages 6 miles in width. Most of the district lies within a broad lowland named the Powell Valley, but the district includes Wallen Ridge, which bounds Powell Valley on the southeast.
Date: 1954
Creator: Miller, Ralph L. & Brosgé, William Peters
Partner: UNT Libraries Government Documents Department
open access

Manganese Deposits of Cedar Creek Valley, Frederick and Shenandoah Counties, Virginia

Description: From abstract: The Cedar Creek manganese mining district is in the southwestern part of Frederick County and the northwestern part of Shenandoah County, Virginia. The manganese ore consists chiefly of the oxides pyrolusite and psilomelane, and forms replacement pockets and fracture fillings in the Oriskany sandstone and in residual sandy clay and chert derived from the New Scotland limestone. Both these formations are of Devonian age, and both form low ridges. The minable bodies have been depos… more
Date: 1942
Creator: Monroe, Watson Hiner
Partner: UNT Libraries Government Documents Department
open access

Late Mesozoic and Cenozoic Stratigraphic and Structural Framework Near Hopewell, Virginia

Description: From introduction: This study was undertaken as part of the U.S. Geological Survey's (USGS) Reactor Hazards Reduction Program. One of the goals of this program is to contribute to the growing recognition and cataloging of Cenozoic faults in the Atlantic Coastal Plain. Once the faults are recognized and cataloged, the stress field and resulting tectonic framework that produced these faults can be determined. This study defines the stratigraphic and structural relationships of a tectonically anom… more
Date: 1987
Creator: Dischinger, James B., Jr.
Partner: UNT Libraries Government Documents Department
open access

Monazite in Atlantic Shore-Line Features

Description: From abstract: "This report is a survey of present and potential production of monazite from part of the Maryland-Florida section of the Atlantic Coastal Plain."
Date: January 1954
Creator: Dryden, Lincoln & Miller, Glen A.
Partner: UNT Libraries Government Documents Department
open access

Progress Report of Southeastern Monazite Exploration, 1952

Description: Report about monzanite placers in streams of the western part of the Piedmont in Virginia, North Carolina, South Carolina, and Georgia. The objective of the report is to describe local monazite deposits, to determine geologic controls of monazite placers in the southeastern Piedmont, and to evaluate placer potentialities of the area.
Date: 1953
Creator: Overstreet, W. C.; Theobald, P. K., Jr.; White, A. M.; Cuppels, N. P.; Caldwell, D. W. & Whitlow, J. W.
Partner: UNT Libraries Government Documents Department
open access

Fisheries Ecosystem Model of the Chesapeake Bay: Methodology, Parameterization, and Model Exploration

Description: Report on the construction of a model to manage fisheries in the Chesapeake Bay region, to see how stocks affect the food web and provide quantified estimations. "This report describes an ecosystem model of the Chesapeake Bay, the Chesapeake Bay Fisheries Ecosystem Model (CBFEM), prepared using the Ecopath with Ecosim approach and software" (p. 5).
Date: October 2009
Creator: Christensen, Villy; Beattie, Alasdair; Buchanan, Claire; Ma, Hongguang; Martell, Steven J. D.; Latour, Robert J. et al.
Location: None
Partner: UNT Libraries Government Documents Department
open access

Reconnaissance for Uranium in Coal and Shale in Southern West Virginia and Southwestern Virginia

Description: Report discussing the U.S. Geological Survey's investigation of uraniferous coals and shales found in southern West Virginia and southwestern Virginia. Information regarding the general area, stratigraphy, structural geology, radioactivity of measured sections, radioactivity of collected samples, and conclusions are included.
Date: July 1953
Creator: Snider, John L.
Partner: UNT Libraries Government Documents Department
open access

2006 Sea Turtle and Pelagic Fish Sensory Physiology Workshop, September 12-13, 2006

Description: From summary: This report summarizes the findings reported by collaborating scientists at the 4th Sea Turtle and Pelagic Fish Sensory Physiology Workshop hosted by the Virginia Institute of Marine Sciences Eastern Shore Laboratory in Wachapregue, Virginia during September 12-13, 2006...The primary objective of the research is to develop techniques and/or commercially viable devices that eliminate or substantially reduce interactions of sea turtles with longline fishing gear while not reducing c… more
Date: October 2007
Creator: Swimmer, Yonat & Wang, John H.
Partner: UNT Libraries Government Documents Department
open access

Shorter Contributions to General Geology, 1936

Description: From abstract: This report describes four species of Ostreidae from the Upper Cretaceous of the Gulf region. The zones that the species characterize lie either in the upper part of the Austin chalk or in beds of upper Austin age.
Date: 1940
Creator: Loughlin, G. F.
Partner: UNT Libraries Government Documents Department
open access

Shorter Contributions to General Geology, 1929

Description: From introduction: This report describes the deposits of analcite in the Green River formation, to compare them with other similar deposits, and to present them with other similar deposits, and to present the observations and inferences that led him to explain them as alteration products of volcanic ash that fell into an ancient saline lake. The report also records the occurrence of several thin beds of sepiolite, or meerschaum, in the Green River formation and presents new data on the molds of… more
Date: 1930
Creator: Mendenhall, W. C.
Partner: UNT Libraries Government Documents Department
open access

Geology of the Big Stone Gap Coal Field of Virginia and Kentucky

Description: From introduction: In presenting this paper the writer has two objects in view. The first is to add to the general knowledge respecting the geology of this central district [Appalachian coal basin]. The groups determined in this region will be carried over the adjoining territory if they can be distinguished and they afford a type-section of the Coal-measures where they are probably best developed. The results are not put forth as final, but as representing the most probable conclusions from th… more
Date: 1893
Creator: Campbell, Marius R.
Partner: UNT Libraries Government Documents Department
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Baltimore, Washington, and Richmond Quadrangles: Volume 2-A. Baltimore Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Baltimore quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: September 1978
Creator: Texas Instruments Incorporated
Partner: UNT Libraries Government Documents Department
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Baltimore, Washington, and Richmond Quadrangles: Volume 2-C. Richmond Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Richmond quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: September 1978
Creator: Texas Instruments Incorporated
Partner: UNT Libraries Government Documents Department
Back to Top of Screen