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1,571 Matching Results
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Optically-Based Array Sensors For Selective In Situ Analysis Of Tank Waste
The objective of this research program is to conduct the fundamental research necessary to develop an array of chemically-selective sensors, based on highly selective molecular recognition agents and highly sensitive fluorescence techniques, that can be coupled to fiber optics for remote analytical applications. The ability to detect and measure specific chemicals and radionuclides directly inside a high level waste tank using a remote sensing device could result in considerable benefits with regard to both cost savings and safety issues. An array of fiber optic sensors will be of great value to DOE for the safe and cost-effective in situ characterization of high level waste tanks and other applications where remote sensing will prevent workers from being exposed to chemicals or radiation. In this approach to the design of sensors, agents for selective molecular recognition such as crown ethers are immobilized in an organic polymer matrix that mimics the organic medium in an aqueous-nonaqueous extraction system. The matrix is attached to an optical fiber for remote detection of metal complexation by photonics measurements. Selection of the complexation agent and solvent are derived from our knowledge of metal ion specificity in the analogous aqueous-non-aqueous solvent-extraction chemistry. We additionally utilize our knowledge of …
Date:
March 31, 2001
Creator:
Brown, Gilbert M.; Dabestani, Reza; Connesen, Peter V. & Walt, David R.
Object Type:
Report
System:
The UNT Digital Library
OPTIMIZATION OF THE CATHODE LONG-TERM STABILITY IN MOLTEN CARBONATE FUEL CELLS: EXPERIMENTAL STUDY AND MATHEMATICAL MODELING
SS 304 was encapsulated with thin layers of Co-Ni by an electroless deposition process. The corrosion behavior of SS304 and Co-Ni-SS304 was investigated in molten carbonate under cathode gas atmosphere with electrochemical and surface characterization tools. Surface modification of SS304 reduced the dissolution of chromium and nickel into the molten carbonate melt. Composition of the corrosion scale formed in case of Co-Ni-SS304 is different from SS304 and shows the presence of Co and Ni oxides while the latter shows the presence of lithium ferrite. Polarization resistance for oxygen reduction reaction and conductivity of corrosion values for the corrosion scales were obtained using impedance analysis and current-potential plots. The results indicated lower polarization resistance for oxygen reduction reaction in the case of Co-Ni-SS304 when compared to SS304. Also, the conductivity of the corrosion scales was considerably higher in case of Co-Ni-SS304 than the SS304. This study shows that modifying the current collector surface with Co-Ni coatings leads to the formation of oxide scales with improved barrier properties and electronic conductivity.
Date:
March 31, 2001
Creator:
White, Dr. Ralph E.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Andrew Brosh, Sr., March 31, 2001
Interview with Andrew Brosh, Sr., a veteran of the U.S. Army from Karnes County, Texas who served in World War II. Brosh describes his time in basic training and experiences serving in Europe, as well as seeing American prisoners of war.
Date:
March 31, 2001
Creator:
Eakin, Elizabeth & Brosh, Andrew, Sr.
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Harold Gensler, March 31, 2001
The National Museum of the Pacific War presents and oral interview with Harold Gensler. Gensler was born in Tarrytown, New York on 28 September 1915 and graduated from high school in 1935. He recalls the crowds at the New York recruiting station being so large the day after the attack on Pearl Harbor that horse-mounted policemen were needed for crowd control. He was exempt from the draft and ineligible to enlist in any branch of the service as he was employed by a railroad company with a job considered essential to the war effort. In 1943 he joined the Navy and was assigned to a Naval Construction Battalion. He was put on various clerical assignments all the while desiring to be in combat. After filing numerous requests he was assigned to the USS Edgecombe (APA-164). The ship departed for New Guinea 31 December 1943 and he describes in minute detail the Shellback initiation ceremony that took place upon crossing the Equator. He made trips to Leyte and Ulithi to deliver supplies and to the Philippines as the fleet prepared for the invasion of Okinawa. He also recalls listening to radio broadcasts by Tokyo Rose foretelling the landings on the island. …
Date:
March 31, 2001
Creator:
Gensler, Harold
Object Type:
Text
System:
The Portal to Texas History
Pawhuska Journal-Capital (Pawhuska, Okla.), Vol. 91, No. 25, Ed. 1 Saturday, March 31, 2001
Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 31, 2001
Creator:
Gann, Sherry
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Presidential Commission on Holocaust Assets in the US
To present a thorough historical record of the collection and disposition of the assets of Holocaust victims that came into the possession or control of the Government of the United States. The Presidential Advisory Commission on Holocaust Assets in the United States (PCHA), established by the U.S. Holocaust Assets Commission Act of 1998 (P.L. 105-186), is charged with conducting original research into the fate of assets taken from victims of the Holocaust that came into the possession of the U.S. Federal government; reviewing research done by others regarding assets that came to private collections and non-Federal government organizations (especially state governments and financial institutions); and advising the President on policies that should be adopted to make restitution to the rightful owners of stolen property or their heirs. The primary goal is to develop an historical account of those valuables that came into the hands of the Federal government. Original research is conducted in the areas of art and cultural property, gold, and non-gold financial property by teams of researchers headed by experts Jonathan Petropoulos, Marc Masurovsky and Helen Junz.
Date:
March 31, 2001
Creator:
Presidential Commission on Holocaust Assets in the United States
Object Type:
Website
System:
The UNT Digital Library
Recycling of Waste Oxides in Steelmaking - Final Report
This research primarily examined the use of waste oxide briquettes (WOB), prepared from blast furnace and basic oxygen furnace (BOF) dusts and mill scale, in BOFs and in particular, the reasons for the methods to reduce slopping in BOF when WOBs are used. Also, the recycling of EAF and stainless steelmaking dusts were examined. It is found that at a critical FeO content in the slag, metal drops emulsify increasing the reaction area and rate drastically, promoting slopping. Recommendations were made to delay the build-up of FeO in the slag to this critical value, thus reducing slopping. Although recycling of EAF dusts in the EAF increased energy use and decreased productivity, it provides Fe units, reduces dust disposal by 25-40%, and increases the Zn content of the dust to acceptable levels for the use by Zn-producers. Stainless steelmaking dusts can also be recycled as WOBs adding Cr to the melt and generating CO gas resulting in good slag foaming.
Date:
March 31, 2001
Creator:
Fruehan, R. J.
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 86, No. 170, Ed. 1 Saturday, March 31, 2001
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 31, 2001
Creator:
Quinnelly, Lorrie J.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Studies in Quantum Field Theory. Final Report, July 21, 1992 - July 31, 1999
Mechanisms have been investigated for chiral symmetry breaking in QED and non-abelian gauge theories using the Schwinger proper-time formalism. Multi-soliton and plane-wave solutions have been generated in affine Toda field theories. New predictions for neutrino mass generation via superfluid-type condensates in the Electroweak theory have been made. Solutions for the linear inhomogeneous bioheat equation were studied in cylindrical geometries.
Date:
March 31, 2001
Creator:
Caldi, Daniel G.
Object Type:
Report
System:
The UNT Digital Library
Utility Advanced Turbine Systems Program (ATS) Technical Readiness Testing and Pre-Commercial Demonstration
None
Date:
March 31, 2001
Creator:
Westinghouse, Siemens
Object Type:
Report
System:
The UNT Digital Library
UTSI/CFFF MHD PROGRAM COMPLETION AND RELATED ACTIVITY
Maintenance work on the DOE CFFF facility and other related government property is no longer authorized under this contract in accordance with the DOE-UT Settlement Agreement. Environmental remediation preservation of the facility continued. Government property has been transferred to UTSI as owner which frees up many items for proper disposal. Actions are underway to dispose of other wastes, and control pests and water at the DOE CFFF.
Date:
March 31, 2001
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library