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Detection and Characterization of Chemicals Present in Tank Waste

Description: The goal of this three-year project is to develop and demonstrate novel multi-parameter micro-electro-mechanical system (MEMS) sensors that are robust and can be used to simultaneously detect the presence of target chemicals in a mixture, radiation emitted from radioactive materials and the heat generated by the absorption of photons of specific wavelength by the target molecules.The goal of this program is to study and develop effective methods of immobilizing chemical selective phases for imp… more
Date: June 1, 1999
Creator: Datskos, P. G. & Sepaniak, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A MEASUREMENT TECHNIQUE FOR HYDROXYACETONE.

Description: Hydroxyacetone (HA) is mainly produced in the atmosphere from oxidation of hydrocarbons of the type, CH{sub 3}(R)C=CH{sub 2}. Tuazon and Atkinson (1990) reported HA yield of 41% from the OH-initiated oxidation of methacrolein in the presence of NO{sub x}. Since methacrolein is a major product of isoprene oxidation (Carter and Atkinson, 1996), isoprene, a key biogenic hydrocarbon, is therefore expected to be an important source for HA. Consequently, knowledge of ambient concentration of HA would… more
Date: October 4, 1999
Creator: KLOTZ,P.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Results of Tritium Tracking and Groundwater Monitoring at the Hanford Site 200 Area State-Approved Land Disposal Site-FY1999

Description: The Hanford Site 200 Area Effluent Treatment Facility (ETF) processes contaminated liquids derived from Hanford Site facilities. The clean water generated by these processes is occasionally enriched in tritium and is discharged to the 200 Area State Approved Land Disposal Site (SALDS). Groundwater monitoring for tritium and other constituents is required by the state-issued permit at 21 wells surrounding the facility. During FY 1999, average tritium activities in most wells declined from averag… more
Date: October 20, 1999
Creator: Barnett, D. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stability of Tl-Ba-Ca-Cu-O Superconducting Thin Films

Description: We report the stability of TlBa{sub 2}CaCu{sub 2}O{sub 7} (Tl-1212) and Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} (T1-2212) thin films and by inference, the stability of TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9} (Tl-1223) and Tl{sub 2}Ba{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} (Tl-2223) thin films, under a variety of conditions. In general, we observe that the stability behavior of the single Tl-O layer materials (Tl-1212 and Tl-1223)are similar and the double Tl-O layer materials (Tl-2212 and Tl-2223) are s… more
Date: August 23, 1999
Creator: Siegal, M.P.; Overmyer, D.L.; Venturini, E.L.; Padilla, R.R. & Provencio, P.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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