152 Matching Results

Results open in a new window/tab.

Catalytic applications of mono- and dinuclear complexes containing metal-carbon sigma bonds. Final report, November 1, 1993--October 31, 1996 (open access)

Catalytic applications of mono- and dinuclear complexes containing metal-carbon sigma bonds. Final report, November 1, 1993--October 31, 1996

This report discusses results from several studies involved in the project. Investigations include: vibrational models for surface olefins and alkylidenes; mechanism of the formation and fragmentation of diosmacyclobutanes; reaction of dienes and allenes with diosmacyclobutanes; determination by nematic phase NMR of the structure of mononuclear and dinuclear ethylene complexes of osmium; and generation of ``coordinatively unsaturated`` complexes by protonation of methyl osmium complexes.
Date: December 31, 1996
Creator: Norton, J.R.
Object Type: Report
System: The UNT Digital Library
Optimal Sensor Placement for Structural Health Monitoring (open access)

Optimal Sensor Placement for Structural Health Monitoring

In large-scale civil structures, a limited number of sensors are placed to monitor the health of civil structures to reduce maintenance, communication and energy costs. In this thesis, the problem of optimal sensor location placement to infer the health of civil structures is explored. First, a comparative study of approaches from the fields of control engineering and civil engineering is conducted . The widely used civil engineering approaches such as effective independence (EI) and modal assurance criterion (MAC) have limitations because of the negligence of modes and damping parameters. On the other hand, control engineering approaches consider the entire system dynamics using impulse response-type sensor measurement data. Such inference can be formulated as an estimation problem, with the dynamics formulated as a second-order differential equation. The comparative study suggests that damping dynamics play significant impact to the selection of best sensor location---the civil engineering approaches that neglect the damping dynamics lead to very different sensor locations from those of the control engineering approaches. In the second part of the thesis, an initial attempt to directly connect the topological graph of the structure (that defines the damping and stiffness matrices) and the second-order dynamics is conducted.
Date: December 2014
Creator: Movva, Gopichand
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Some Haulage and Hoisting Hazards in Western Mines (open access)

Some Haulage and Hoisting Hazards in Western Mines

Report issued by the U.S. Bureau of Mines discussing safety hazards in western mines. Mine hoisting and haulage accidents are presented. Accident prevention is also discussed. This report includes tables.
Date: December 1942
Creator: Denny, E. H. & Humphrey, H. B.
Object Type: Report
System: The UNT Digital Library
Thickness of Bituminous Coal and Lignite Seams Mined in the United States in 1945 (open access)

Thickness of Bituminous Coal and Lignite Seams Mined in the United States in 1945

Report issued by the U.S. Bureau of Mines discussing bituminous coal and lignite seams found in the United States. The thickness of seams from several U.S. states is compared, as well as the mining methods employed. This report includes maps, tables, and illustrations.
Date: December 1947
Creator: Young, W. H. & Anderson, R. L.
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B1310.0648]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Named general manager of the land department of Sinclair Oil & Gas Co., Tulsa, Coles S. tinkler has been area exploration supervisor in the company's western region at Denver."
Date: December 4, 1966
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B1295.0628]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "J. C Trujillo (Cowboy) (Steamboat Springs, Colo.)"
Date: December 5, 1977
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0385.0098]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: December 12, 1995
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0385.0101]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: December 12, 1995
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0385.0102]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: December 12, 1995
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0385.0100]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: December 12, 1995
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0281.0350]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Vicki Hallmark, drew a "green broke horse" from prime bucking stock to ride in horsemanship competition for the (Miss Rodeo American pageant.)"
Date: December 6, 1975
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History
The Synthetic Liquid Fuel Potential of Colorado: Volume 1 - Text (open access)

The Synthetic Liquid Fuel Potential of Colorado: Volume 1 - Text

Report documenting the suitability of Colorado for plant locations to produce synthetic liquid fuels, based on raw materials such as coal, oil shale, natural gas, and oil-impregnated strippable deposits.
Date: December 14, 1951
Creator: Ford, Bacon, and Davis
Object Type: Report
System: The UNT Digital Library
The Synthetic Liquid Fuel Potential of Colorado: Volume 2 - Exhibits and Appendices (open access)

The Synthetic Liquid Fuel Potential of Colorado: Volume 2 - Exhibits and Appendices

Volume of supplementary data, illustrations, and other information related to a study of the suitability of areas in Colorado for developing coal, natural gas, oil shale, and other deposits into synthetic liquid fuels.
Date: December 14, 1951
Creator: Ford, Bacon, and Davis
Object Type: Report
System: The UNT Digital Library
[Letter from R. Wright Armstrong to I. H. Kempner, December 31, 1952] (open access)

[Letter from R. Wright Armstrong to I. H. Kempner, December 31, 1952]

Letter from R. Wright Armstrong to I. H. Kempner discussing the extension of the enclosed Rock Island transportation passes.
Date: December 31, 1952
Creator: Armstrong, R. Wright
Object Type: Letter
System: The Portal to Texas History
Wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado (open access)

Wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado

Discussing wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado
Date: December 1954
Creator: Adams, John W. & Stugard, Frederick
Object Type: Report
System: The UNT Digital Library
Exploration for uranium deposits in the Spring Creek Mesa area, Montrose County, Colorado (open access)

Exploration for uranium deposits in the Spring Creek Mesa area, Montrose County, Colorado

A report regarding exploration for uranium deposits in the Spring Creek Mesa Area, in Montrose County, Colorado.
Date: December 1954
Creator: Roach, C. H.
Object Type: Report
System: The UNT Digital Library
Environment of Uranium Deposition in the Bull Canyon Area, Southwestern Colorado (open access)

Environment of Uranium Deposition in the Bull Canyon Area, Southwestern Colorado

Summarizing the data on the uranium-vanadium deposits of the Bull Canyon area in Montrose and San Miguel Counties, Colorado.
Date: December 1957
Creator: Dalrymple, J. W.; Dickinson, R. C. & Young, N. B.
Object Type: Report
System: The UNT Digital Library
Preliminary report on geologic reconnaissance in Ralston Creek-Golden Gate Canyon areas, Jefferson County, Colorado (open access)

Preliminary report on geologic reconnaissance in Ralston Creek-Golden Gate Canyon areas, Jefferson County, Colorado

Determining the major structural features of the area, and the relation between the uranium mineralization along Golden Gate canyon and that of Ralston Creek.
Date: December 23, 1953
Creator: Riley, Thomas H.
Object Type: Report
System: The UNT Digital Library
Preliminary reserve statement 48, reserve blocks K and L, Long Park area, Montrose County, Colorado (open access)

Preliminary reserve statement 48, reserve blocks K and L, Long Park area, Montrose County, Colorado

A preliminary statement discussing Reserve Blocks K and L, Long Park Area
Date: December 1955
Creator: Litsey, L. R.
Object Type: Report
System: The UNT Digital Library
Development drilling on the Pay Day group, Gypsum Valley district, San Miguel County, Colorado (open access)

Development drilling on the Pay Day group, Gypsum Valley district, San Miguel County, Colorado

A report discussing development drilling on the Pay Day Group, Gypsum Valley District, San Miguel County, Colorado
Date: December 1952
Creator: Mobley, C. M.
Object Type: Report
System: The UNT Digital Library
Preliminary reserve statement 5, reserve block A, Otero and Eloisa claims, Legin group, San Miguel County, Colorado (open access)

Preliminary reserve statement 5, reserve block A, Otero and Eloisa claims, Legin group, San Miguel County, Colorado

A preliminary reserve statement regarding Reserve Block A, for the Otero and Eloisa Claims Legin Group, Located in San Miguel County, Colorado.
Date: December 1950
Creator: Bush, Alfred Lerner
Object Type: Report
System: The UNT Digital Library
[News Script: News] (open access)

[News Script: News]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story of the Atomic Energy Commission who says that Dow Chemical Company has failed to report two leaks of Radioactive materials. Also, Spanish government sources saying that Generalissimo will not be attending the funeral of Slain Premier. Last one is about the 2 major bills which remains on Congress head.
Date: December 21, 1973, 6:30 a.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Trucks] (open access)

[News Script: Trucks]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story of many truckers who are not honoring a nationwide work stoppage are traveling in groups to avoid any possible trouble.
Date: December 14, 1973, 6:30 a.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library

Figure 2.-- Preliminary Map of Bedrock Geology of the Ralston Buttes Quadrangle, Jefferson County, Colorado

Map showing the bedrock geology of the Ralston Buttes Quadrangle, Jefferson County, Colorado along with an accompanying explanation.
Date: December 1956
Creator: Sheridan, Douglas M.; Maxwell, Charles H.; Albee, Arden Leroy & Van Horn, Richard
Object Type: Dataset
System: The UNT Digital Library