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Holocene Paleohydrology of the tropical andes from lake records
Two century-scale time series in northern Bolivia constrain the ages of abrupt changes in the physical, geochemical, and biological characteristics of sediments obtained from lakes that formed during deglaciation from the late Pleistocene glacial maximum. The watersheds of Laguna Viscachani (16{degrees}12`S, 68{degrees}07`W, 3780m) and Lago Taypi Chaka Kkota (16{degrees}13`S, 68{degrees}21`W, 4300m), located on the eastern and western slopes of the Cordillera Real, respectively, contain small cirque glaciers. A high-resolution chronology of the lake sediments is provided by 23 AMS {sup 14}C dates of discrete macro-fossils. Late Pleistocene glaciers retreated rapidly, exposing the lake basins between 10,700 and 9700 {sup 14}C yr B.P. The sedimentary facies suggest that after 8900 {sup 14}C B.P. glaciers were absent from the watersheds and remained so during the middle Holocene. An increase in the precipitation-evaporation balance is indicated above unconformities dated to about 2300 {sup 14}C yr B.P. in both Lago Taypi Chaka Kkota and Laguna Viscachani. An abrupt increase in sediment accumulation rated after 1400 {sup 14}C yr B.P. signals the onset of Neoglaciation. A possible link exists between the observed millennial-scale shifts in the regional precipitation- evaporation balance and seasonal shifts in tropical insolation.
Date:
March 3, 1997
Creator:
Abbott, M. B., LLNL
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0309B.0450]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Rev. W. k. Jackson"
Date:
March 3, 1993
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Comparison of the total cross sections measurements of CDF and E811
The total cross section at {radical}s = 1.8 TeV has been measured by three groups (CDF, E710, and E811). We think that CDF should quote results based only on our own measurement. We also indicate how to compare cross sections measured by both CDF and D0.
Date:
March 3, 1999
Creator:
Albrow, M.; Beretvas, A.; Nodulman, L. & Giromini, P.
Object Type:
Report
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 83, No. 117, Ed. 1 Wednesday, March 3, 1999
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
March 3, 1999
Creator:
Allam, Heather
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Electronic transport and mixed conductivity in perovskite type oxides
The goal of the investigation presented in this report is to study the inter-relationship between electrical conductivity, oxidation-reduction kinetics, defect structure, and composition of n- and p-type binary and ternary transition metal oxides. The experimental part of the investigation included specimen preparation, thermogravimetric measurements, X-ray diffraction, thermally stimulated current, DTA/TGA, optical absorption, transmission electron microscopy, electrical conductivity, and Seebeck measurements. The systems studied or being studied are LaMnO{sub 3}-LaCrO{sub 3}-LaCrO{sub 3}, (La,Ca)(Mn,Al)O{sub 3}, Y{sub 1-x}Ca{sub x}CrO{sub 3}, YMnO{sub 3}-CaMnO{sub 3}, and LaMnO{sub 3}-CaMnO{sub 3}.
Date:
March 3, 1992
Creator:
Anderson, H. U.; Nasrallah, M. M.; Sparlin, D. M. & Parris, P. E.
Object Type:
Report
System:
The UNT Digital Library
Electronic transport and mixed conductivity in perovskite type oxides. Progress report, October 1, 1990--June 30, 1992
The goal of the investigation presented in this report is to study the inter-relationship between electrical conductivity, oxidation-reduction kinetics, defect structure, and composition of n- and p-type binary and ternary transition metal oxides. The experimental part of the investigation included specimen preparation, thermogravimetric measurements, X-ray diffraction, thermally stimulated current, DTA/TGA, optical absorption, transmission electron microscopy, electrical conductivity, and Seebeck measurements. The systems studied or being studied are LaMnO{sub 3}-LaCrO{sub 3}-LaCrO{sub 3}, (La,Ca)(Mn,Al)O{sub 3}, Y{sub 1-x}Ca{sub x}CrO{sub 3}, YMnO{sub 3}-CaMnO{sub 3}, and LaMnO{sub 3}-CaMnO{sub 3}.
Date:
March 3, 1992
Creator:
Anderson, H. U.; Nasrallah, M. M.; Sparlin, D. M. & Parris, P. E.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0074.0728]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
March 3, 1995
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0074.0729]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Chewed finger nails and stopped breaths are symptoms on the Lomega bench during a Friday afternoon game at the State tournament in Oklahoma City."
Date:
March 3, 1995
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0225.0482]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Greg and Josh Gorman get a quick dinner out of the microwave and onto the table."
Date:
March 3, 1991
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0225.0483]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Evenings include some personal time for Greg and Josh Gorman. Josh's mother is with a medical unit in Germany."
Date:
March 3, 1991
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0384.0109]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Park Pal, the new mascot of the state parks system, plays in Red Rock Canyon with Jacob Lambert, 3, and Josh Lambert, 5."
Date:
March 3, 1990
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oral History Interview with Dan Wallace Bacon, March 3, 1998
Interview with Dan Wallace Bacon, a doctor from Kerrville, Texas. The interview includes his stories of serving as a doctor in Kerrville for over 40 years.
Date:
March 3, 1998
Creator:
Bacon, Dan Wallace & Bethel, Ann
Object Type:
Video
System:
The Portal to Texas History
Progress in stabilization of plutonium and residues since DNFSB recommendation 94-1
There are approximately 100 metric tons of residues at the Rocky Flats Environmental Technology Site containing approximately 3 metric tons of plutonium. The residues are byproducts of past plutonium operations incinerator ash; pyrochemical salts; graphite; sand, slag, and crucible; and miscellaneous forms of combustibles, glass, metal, and sludges. In September 1993, a report was released (Reference 1) which identified concerns with the chemical stability of the residues and with the integrity of packaging. In May 1997, the Defense Nuclear Facility Safety Board published recommendation 94-1 citing a concern for the residue stability and requiring that the possibly unstable residues be processed within 3 years and all others within 5 years. A risk categorization scheme was developed which assigned a numerical risk to each residue type based on the probability and consequence of occurrence of failures associated with the hazards identified. The residues were ranked for priority of stabilization actions. Urgent concerns were resolved. All residue drums were vented to eliminate the potential for hydrogen and other explosive gas accumulation. Leaded rubber gloves and ion exchange resins were washed to eliminate the explosion potential. An aggressive characterization program was implemented to search for any additional safety or environmental concerns and to …
Date:
March 3, 1998
Creator:
Ball, J.M. & Dustin, D.F.
Object Type:
Article
System:
The UNT Digital Library
University Press (Beaumont, Tex.), Vol. 70, No. 13, Ed. 1 Wednesday, March 3, 1993
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
March 3, 1993
Creator:
Bankston, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
News Bulletin (Castroville, Tex.), Vol. 35, No. 9, Ed. 1 Thursday, March 3, 1994
Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date:
March 3, 1994
Creator:
Barnes, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
Bringing the Fuzzy Front End into Focus
Technology planning is relatively straightforward for well-established research and development (R and D) areas--those areas in which an organization has a history, the competitors are well understood, and the organization clearly knows where it is going with that technology. What we are calling the fuzzy front-end in this paper is that condition in which these factors are not well understood--such as for new corporate thrusts or emerging areas where the applications are embryonic. While strategic business planning exercises are generally good at identifying technology areas that are key to future success, they often lack substance in answering questions like: (1) Where are we now with respect to these key technologies? ... with respect to our competitors? (2) Where do we want or need to be? ... by when? (3) What is the best way to get there? In response to its own needs in answering such questions, Sandia National Laboratories is developing and implementing several planning tools. These tools include knowledge mapping (or visualization), PROSPERITY GAMES and technology roadmapping--all three of which are the subject of this paper. Knowledge mapping utilizes computer-based tools to help answer Question 1 by graphically representing the knowledge landscape that we populate as compared with …
Date:
March 3, 1999
Creator:
Beck, D. F.; Boyack, K. W.; Bray, O. H. & Siemens, W. D.
Object Type:
Article
System:
The UNT Digital Library
Innovative Uses for Conventional Radiation Detectors via Pulse Shape Analysis
In this report we have discussed two applications for digital pulse shape analysis in Ge detectors: Compton suppression and {gamma}-ray imaging. The Compton suppression aspect has been thoroughly studied during the past few years, and a real-time, laboratory-prototype system has been fielded. A summary of results from that set up have been discussed here. The {gamma}-ray imaging aspect, while not yet developed experimentally, looks very promising theoretically as the simulations presented here have shown. Experimental work currently underway at Berkeley (as discussed in section 4.3) should help further guide us towards the proper developmental path.
Date:
March 3, 1999
Creator:
Beckedahl, D.; Blair, J.; Friensehner, A.; Kammeraad, J. E. & Schmid, G.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0149.0153]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sally Bently, Ann Taylor and Dr. Warren Crosby, from left, look over a program."
Date:
March 3, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0356.0686]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dr. Philip J. Porter, left, looks on as Ken Elliott points out landmarks to Dr. Bertha M. Levy."
Date:
March 3, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0357B.0091]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Moore Mayor Glenn Lewis said sales tax collection and building permits are up."
Date:
March 3, 1994
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0403.0316]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dr. Robert Kennedy state Rep. Angela Monson, Cassie Bowen and Mike Dover, from left, visit."
Date:
March 3, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1089.0118]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
March 3, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1089.0119]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
March 3, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1089.0120]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A week before Robyn Leroy Parks is scheduled to be executed, a juror who helped convict him in 1978 in the killing of a gasoline station attendant said she said has changed her mind."
Date:
March 3, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History