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Integrated Sensing and Controls for Coal Gasification - Development of Model-Based Controls for GE's Gasifier and Syngas Cooler
This report summarizes the achievements and final results of this program. The objective of this program is to develop a comprehensive systems approach to integrated design of sensing and control systems for an Integrated Gasification Combined Cycle (IGCC) plant, using advanced model-based techniques. In particular, this program is focused on the model-based sensing and control system design for the core gasification section of an IGCC plant. The overall approach consists of (i) developing a first-principles physics-based dynamic model of the gasification section, (ii) performing model-reduction where needed to derive low-order models suitable for controls analysis and design, (iii) developing a sensing system solution combining online sensors with model-based estimation for important process variables not measured directly, and (iv) optimizing the steady-state and transient operation of the plant for normal operation as well as for startup using model predictive controls (MPC). Initially, available process unit models were implemented in a common platform using Matlab/Simulink{reg_sign}, and appropriate model reduction and model updates were performed to obtain the overall gasification section dynamic model. Also, a set of sensor packages were developed through extensive lab testing and implemented in the Tampa Electric Company IGCC plant at Polk power station in 2009, to measure temperature …
Date:
December 30, 2010
Creator:
Kumar, Aditya
Object Type:
Report
System:
The UNT Digital Library
International Trade and Finance: Key Policy Issues for the 112th Congress
This report highlights major international trade and finance issues Congress may address this year and next.
Date:
December 30, 2010
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Jewish Herald-Voice (Houston, Tex.), Vol. 102, No. 44, Ed. 1 Thursday, December 30, 2010
Weekly Jewish newspaper from Houston, Texas that includes local, state and national news along with extensive advertising.
Date:
December 30, 2010
Creator:
Samuels, Jeanne F.
Object Type:
Newspaper
System:
The Portal to Texas History
Joshua Star (Joshua, Tex.), Vol. 34, No. 2, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Joshua, Texas that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
Porter, Brian
Object Type:
Newspaper
System:
The Portal to Texas History
Keene Star (Keene, Tex.), Vol. 18, No. 23, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Keene, Texas that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
Gnadt, Paul
Object Type:
Newspaper
System:
The Portal to Texas History
Location-Based Preferences in Federal and Federally Funded Contracting: An Overview of the Law
This report discusses constitutional and other legal issues related to the creation and implementation of location-based preferences in federal contracting, as well as summarizes key authorities requiring or allowing federal agencies to "favor" contractors located in specific places. The report does not address federal preferences for domestic products or provisions of federal law that could, depending upon their implementation, effectively prefer local contractors, such as project labor agreements.
Date:
December 30, 2010
Creator:
Luckey, John R. & Manuel, Kate M.
Object Type:
Report
System:
The UNT Digital Library
Measurements of isotope effects in the photoionization of N2 and implications for Titan's atmosphere
Isotope effects in the non-dissociative photoionization of molecular nitrogen (N2 + h nu -> N2+ + e-) may play a role in determining the relative abundances of isotopic species containing nitrogen in interstellar clouds and planetary atmospheres but have not been previously measured. Measurements of the photoionization efficiency spectra of 14N2, 15N14N, and 15N2 from 15.5 to 18.9 eV (65.6-80.0 nm) using the Advanced Light Source at Lawrence Berkeley National Laboratory show large differences in peak energies and intensities, with the ratio of the energy-dependent photoionization cross-sections, sigma(14N2)/sigma(15N14N), ranging from 0.4 to 3.5. Convolving the cross-sections with the solar flux and integrating over the energies measured, the ratios of photoionization rate coefficients are J(15N14N)/J(14N2)=1.00+-0.02 and J(15N2)/J(14N2)=1.00+-0.02, suggesting that isotopic fractionation between N2 and N2+ should be small under such conditions. In contrast, in a one-dimensional model of Titan's atmosphere, isotopic self-shielding of 14N2 leads to values of J(15N14N)/J(14N2) as large as ~;;1.17, larger than under optically thin conditions but still much smaller than values as high as ~;;29 predicted for N2 photodissociation. Since modeled photodissociation isotope effects overpredict the HC15N/HC14N ratio in Titan's atmosphere, and since both N atoms and N2+ ions may ultimately lead to the formation of HCN, …
Date:
December 30, 2010
Creator:
Croteau, Philip; Randazzo, John B.; Kostko, Oleg; Ahmed, Musahid; Liang, Mao-Chang; Yung, Yuk L. et al.
Object Type:
Article
System:
The UNT Digital Library
Neutron Generators for Spent Fuel Assay
The Next Generation Safeguards Initiative (NGSI) of the U.S. DOE has initiated a multi-lab/university collaboration to quantify the plutonium (Pu) mass in, and detect the diversion of pins from, spent nuclear fuel (SNF) assemblies with non-destructive assay (NDA). The 14 NDA techniques being studied include several that require an external neutron source: Delayed Neutrons (DN), Differential Die-Away (DDA), Delayed Gammas (DG), and Lead Slowing-Down Spectroscopy (LSDS). This report provides a survey of currently available neutron sources and their underlying technology that may be suitable for NDA of SNF assemblies. The neutron sources considered here fall into two broad categories. The term 'neutron generator' is commonly used for sealed devices that operate at relatively low acceleration voltages of less than 150 kV. Systems that employ an acceleration structure to produce ion beam energies from hundreds of keV to several MeV, and that are pumped down to vacuum during operation, rather than being sealed units, are usually referred to as 'accelerator-driven neutron sources.' Currently available neutron sources and future options are evaluated within the parameter space of the neutron generator/source requirements as currently understood and summarized in section 2. Applicable neutron source technologies are described in section 3. Commercially available neutron generators …
Date:
December 30, 2010
Creator:
Ludewigt, Bernhard A.
Object Type:
Report
System:
The UNT Digital Library
The Nocona News (Nocona, Tex.), Vol. 106, No. 31, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Nocona, Texas that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
Mesler, Tracy R. & Mesler, Linda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Olney Enterprise (Olney, Tex.), Vol. 102, No. 43, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Olney, Texas that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
Kimbro, Mindi
Object Type:
Newspaper
System:
The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 118, No. 250, Ed. 1 Thursday, December 30, 2010
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Polk County Enterprise (Livingston, Tex.), Vol. 128, No. 104, Ed. 1 Thursday, December 30, 2010
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
December 30, 2010
Creator:
Reddell, Valerie
Object Type:
Newspaper
System:
The Portal to Texas History
Port Aransas South Jetty (Port Aransas, Tex.), Vol. 41, No. 52, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with extensive advertising.
Date:
December 30, 2010
Creator:
Judson, Mary Henkel
Object Type:
Newspaper
System:
The Portal to Texas History
The Sachse News (Sachse, Tex.), Vol. 6, No. 49, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Sachse, Texas that includes local, state and national news along with advertising.
Date:
December 30, 2010
Creator:
Fisher, Donnita Nesbit
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 96, No. 77, Ed. 1 Thursday, December 30, 2010
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
Harmon, C. L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Strategic Management Plan - Department of Defense
This report presents the Department of Defense's business goals, objectives, measures, and initiatives for the 2011 fiscal year.
Date:
December 30, 2010
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
The Suburbia News (Seagoville, Tex.), Vol. 39, No. 6, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Seagoville, Texas that includes local, state and national news along with advertising.
Date:
December 30, 2010
Creator:
Pugh, Tiffany
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 039, Ed. 1 Thursday, December 30, 2010
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Technology Roadmap Research Program for the Steel Industry
The steel industry's Technology Roadmap Program (TRP) is a collaborative R&D effort jointly sponsored by the steel industry and the United States Department of Energy. The TRP program was designed to develop new technologies to save energy , increase competitiveness, and improve the environment. TRP ran from July, 1997 to December, 2008, with a total program budget of $38 million dollars. During that period 47 R&D projects were performed by 28 unique research organizations; co-funding was provided by DOE and 60 industry partners. The projects benefited all areas of steelmaking and much know-how was developed and transferred to industry. The American Iron and Steel Institute is the owner of all intellectual property developed under TRP and licenses it at commercial rates to all steelmakers. TRP technologies are in widespread use in the steel industry as participants received royalty-free use of intellectual property in return for taking the risk of funding this research.
Date:
December 30, 2010
Creator:
Vehec, Joseph R.
Object Type:
Report
System:
The UNT Digital Library
Texas Jewish Post (Fort Worth, Tex.), Vol. 64, No. 52, Ed. 1 Thursday, December 30, 2010
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state and national news along with extensive advertising.
Date:
December 30, 2010
Creator:
Wisch-Ray, Sharon
Object Type:
Newspaper
System:
The Portal to Texas History
The U.S. Congress and the European Parliament: Evolving Transatlantic Legislative Cooperation
This report provides background on the Congress-EP relationship and the role of the TLD. It also explores potential future options should an effort to strengthen ties between the two bodies gain momentum.
Date:
December 30, 2010
Creator:
Archick, Kristin & Morelli, Vincent
Object Type:
Report
System:
The UNT Digital Library
Unemployment Compensation (Insurance) and Military Service
This report discusses Unemployment Compensation for Ex-Servicemembers (UCX), which provides income support while former active duty military personnel or reservists released from active duty search for work. The report addresses funding for this service, who is entitled to UCX benefits, and Emergency Unemployment Compensation (EUC08) and the Extended Benefits (EB) payments, which a servicemember receives when regular unemployment benefits are exhausted.
Date:
December 30, 2010
Creator:
Whittaker, Julie M.
Object Type:
Report
System:
The UNT Digital Library
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 108, No. 40, Ed. 1 Thursday, December 30, 2010
Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Afghanistan: Post-Taliban Governance, Security, and U.S. Policy
This report discusses the current political state of Iran, focusing particularly on the influence of the Taliban and other militant groups and on the leadership of Afghan President Hamid Karzai. This report also discusses the U.S.-Iran relationship and U.S. efforts under the Obama Administration to provide military, reconstructive, and stabilization aid.
Date:
December 29, 2010
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library