Degree Department

Identification of Matrix Conditions that Give Rise to the Linear Coupling Resonances (open access)

Identification of Matrix Conditions that Give Rise to the Linear Coupling Resonances

N/A
Date: March 1, 2009
Creator: Gardner, C. J.
Object Type: Report
System: The UNT Digital Library
Identification of matrix conditions that give rise to the linear coupling resonances (open access)

Identification of matrix conditions that give rise to the linear coupling resonances

General definitions of horizontal and vertical amplitudes for linear coupled motion are developed from the normal form of the one-turn matrix. This leads to the identification of conditions on the matrix that give rise to the linear coupling sum and difference resonances. The correspondence with the standard hamiltonian treatment of the resonances is discussed.
Date: March 1, 2009
Creator: Gardner,C.J.
Object Type: Report
System: The UNT Digital Library
Biochemistry and genetics of autotrophy in Methanococcus (open access)

Biochemistry and genetics of autotrophy in Methanococcus

The project investigated fundamental aspects of carbon metabolism and genetics in the methane-producing archaeon Methanococcus maripaludis. The project yielded 23 peer-reviewed publications and five reviews from 1997-2007. PDFs of the peer-reviewed publications are included in the next section. Some papers of special interest are listed below. The pathway of pyruvate biosynthesis was elucidated by a combination of biochemical and physiological studies. This work characterized the very oxygen sensitive pyruvate oxidoreductase and showed that the enzyme was irreversible under physiological conditions. Evidence for the flow of electrons from the energy coupling hydrogenase b (Ehb) was presented. These results were published in the following papers. Yang, Y.L., J.N. Gluska, and W.B. Whitman (2002) Intracellular pyruvate flux in the methane-producing archaeon Methanococcus maripaludis. Arch. Microbiol. 178: 493-498. Lin, W.C., Y.L. Yang, and W.B. Whitman (2003) The anabolic pyruvate oxidoreductase from Methanococcus maripaludis. Arch. Microbiol. 179: 444-456. Lin, W., and W.B. Whitman (2004) The importance of porE and porF in the anabolic pyruvate oxidoreductase of Methanococcus maripaludis. Arch. Microbiol. 181: 68-73. Porat, I., W. Kim, E.L. Hendrickson, Q. Xia, Y. Zhang, T. Wang, F. Taub, B.C. Moore, I.J. Anderson, M. Hackett, J.A. Leigh, and W.B. Whitman (2006) Disruption of the Ehb hydrogenase operon limits …
Date: March 31, 2009
Creator: Whitman, William B.
Object Type: Report
System: The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 114, No. 9, Ed. 1 Wednesday, March 4, 2009 (open access)

The Clifton Record (Clifton, Tex.), Vol. 114, No. 9, Ed. 1 Wednesday, March 4, 2009

Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date: March 4, 2009
Creator: Smith, W. Leon
Object Type: Newspaper
System: The Portal to Texas History
Energy and water sector policy strategies for drought mitigation. (open access)

Energy and water sector policy strategies for drought mitigation.

Tensions between the energy and water sectors occur when demand for electric power is high and water supply levels are low. There are several regions of the country, such as the western and southwestern states, where the confluence of energy and water is always strained due to population growth. However, for much of the country, this tension occurs at particular times of year (e.g., summer) or when a region is suffering from drought conditions. This report discusses prior work on the interdependencies between energy and water. It identifies the types of power plants that are most likely to be susceptible to water shortages, the regions of the country where this is most likely to occur, and policy options that can be applied in both the energy and water sectors to address the issue. The policy options are designed to be applied in the near term, applicable to all areas of the country, and to ease the tension between the energy and water sectors by addressing peak power demand or decreased water supply.
Date: March 1, 2009
Creator: Kelic, Andjelka; Vugrin, Eric D.; Loose, Verne W. & Vargas, Vanessa N.
Object Type: Report
System: The UNT Digital Library
Lexington Leader (Lexington, Tex.), Vol. 13, No. 567, Ed. 1 Thursday, March 5, 2009 (open access)

Lexington Leader (Lexington, Tex.), Vol. 13, No. 567, Ed. 1 Thursday, March 5, 2009

Weekly newspaper from Lexington, Texas that includes local, state, and national news along with advertising.
Date: March 5, 2009
Creator: Terrell, Cindy
Object Type: Newspaper
System: The Portal to Texas History
Lexington Leader (Lexington, Tex.), Vol. 13, No. 568, Ed. 1 Thursday, March 12, 2009 (open access)

Lexington Leader (Lexington, Tex.), Vol. 13, No. 568, Ed. 1 Thursday, March 12, 2009

Weekly newspaper from Lexington, Texas that includes local, state, and national news along with advertising.
Date: March 12, 2009
Creator: Terrell, Cindy
Object Type: Newspaper
System: The Portal to Texas History
Autonomous observations of the ocean biological carbon pump (open access)

Autonomous observations of the ocean biological carbon pump

Prediction of the substantial biologically mediated carbon flows in a rapidly changing and acidifying ocean requires model simulations informed by observations of key carbon cycle processes on the appropriate space and time scales. From 2000 to 2004, the National Oceanographic Partnership Program (NOPP) supported the development of the first low-cost fully-autonomous ocean profiling Carbon Explorers that demonstrated that year-round real-time observations of particulate organic carbon (POC) concentration and sedimentation could be achieved in the world's ocean. NOPP also initiated the development of a sensor for particulate inorganic carbon (PIC) suitable for operational deployment across all oceanographic platforms. As a result, PIC profile characterization that once required shipboard sample collection and shipboard or shore based laboratory analysis, is now possible to full ocean depth in real time using a 0.2W sensor operating at 24 Hz. NOPP developments further spawned US DOE support to develop the Carbon Flux Explorer, a free-vehicle capable of following hourly variations of particulate inorganic and organic carbon sedimentation from near surface to kilometer depths for seasons to years and capable of relaying contemporaneous observations via satellite. We have demonstrated the feasibility of real time - low cost carbon observations which are of fundamental value to carbon prediction …
Date: March 1, 2009
Creator: Bishop, James K.B.
Object Type: Article
System: The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 101, No. 12, Ed. 1 Thursday, March 26, 2009 (open access)

The Tulia Herald (Tulia, Tex.), Vol. 101, No. 12, Ed. 1 Thursday, March 26, 2009

Weekly newspaper from Tulia, Texas that includes local, state, and national news along with extensive advertising.
Date: March 26, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 117, No. 47, Ed. 1 Saturday, March 7, 2009 (open access)

Perry Daily Journal (Perry, Okla.), Vol. 117, No. 47, Ed. 1 Saturday, March 7, 2009

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date: March 7, 2009
Creator: Brown, Gloria
Object Type: Newspaper
System: The Gateway to Oklahoma History
Modeling preferential water flow and solute transport in unsaturated soil using the active region model (open access)

Modeling preferential water flow and solute transport in unsaturated soil using the active region model

Preferential flow and solute transport are common processes in the unsaturated soil, in which distributions of soil water content and solute concentrations are often characterized as fractal patterns. An active region model (ARM) was recently proposed to describe the preferential flow and transport patterns. In this study, ARM governing equations were derived to model the preferential soil water flow and solute transport processes. To evaluate the ARM equations, dye infiltration experiments were conducted, in which distributions of soil water content and Cl{sup -} concentration were measured. Predicted results using the ARM and the mobile-immobile region model (MIM) were compared with the measured distributions of soil water content and Cl{sup -} concentration. Although both the ARM and the MIM are two-region models, they are fundamental different in terms of treatments of the flow region. The models were evaluated based on the modeling efficiency (ME). The MIM provided relatively poor prediction results of the preferential flow and transport with negative ME values or positive ME values less than 0.4. On the contrary, predicted distributions of soil water content and Cl- concentration using the ARM agreed reasonably well with the experimental data with ME values higher than 0.8. The results indicated that the …
Date: March 15, 2009
Creator: Sheng, F.; Wang, K.; Zhang, R. & Liu, H.H.
Object Type: Article
System: The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 133, No. 41, Ed. 1 Thursday, March 5, 2009 (open access)

The Albany News (Albany, Tex.), Vol. 133, No. 41, Ed. 1 Thursday, March 5, 2009

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: March 5, 2009
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 133, No. 44, Ed. 1 Thursday, March 26, 2009 (open access)

The Albany News (Albany, Tex.), Vol. 133, No. 44, Ed. 1 Thursday, March 26, 2009

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: March 26, 2009
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
Management and Development of the Western Resources Project (open access)

Management and Development of the Western Resources Project

The purpose of this project was to manage the Western Resources Project, which included a comprehensive, basin-wide set of experiments investigating the impacts of coal bed methane (CBM; a.k.a. coal bed natural gas, CBNG) production on surface and groundwater in the Powder River Basin in Wyoming. This project included a number of participants including Apache Corporation, Conoco Phillips, Marathon, the Ucross Foundation, Stanford University, the University of Wyoming, Montana Bureau of Mines and Geology, and Western Research Institute.
Date: March 9, 2009
Creator: Brown, Terry
Object Type: Report
System: The UNT Digital Library
Mannford Eagle (Mannford, Okla.), Vol. 27, No. 42, Ed. 1 Wednesday, March 4, 2009 (open access)

Mannford Eagle (Mannford, Okla.), Vol. 27, No. 42, Ed. 1 Wednesday, March 4, 2009

Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date: March 4, 2009
Creator: Hughes, Dustin
Object Type: Newspaper
System: The Gateway to Oklahoma History
Slow Hydrogen Transfer Reactions of Oxo- and Hydroxo-Vanadium Compounds: The Importance of Intrinsic Barriers (open access)

Slow Hydrogen Transfer Reactions of Oxo- and Hydroxo-Vanadium Compounds: The Importance of Intrinsic Barriers

Article on slow hydrogen atom transfer reactions of oxo- and hydroxo-vanadium compounds and the importance of intrinsic barriers.
Date: March 17, 2009
Creator: Waidmann, Christopher; Zhou, Xin; Tsai, Erin A.; Kaminsky, Werner; Hrovat, David A.; Borden, Weston T. et al.
Object Type: Article
System: The UNT Digital Library

PHEV Battery Trade-Off Study and Standby Thermal Contro

Describes NREL's R&D to optimize the design of batteries for plug-in hybrid electric vehicles to meet established requirements at minimum cost.
Date: March 1, 2009
Creator: Smith, K.; Markel, T. & Pesaran, A.
Object Type: Presentation
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 111, No. 189, Ed. 1 Tuesday, March 31, 2009 (open access)

The Altus Times (Altus, Okla.), Vol. 111, No. 189, Ed. 1 Tuesday, March 31, 2009

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 31, 2009
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Polk County Enterprise (Livingston, Tex.), Vol. 127, No. 19, Ed. 1 Thursday, March 5, 2009 (open access)

Polk County Enterprise (Livingston, Tex.), Vol. 127, No. 19, Ed. 1 Thursday, March 5, 2009

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date: March 5, 2009
Creator: Reddell, Valerie
Object Type: Newspaper
System: The Portal to Texas History
Today Newspapers (Duncanville, Tex.), Vol. 1, No. 1, Ed. 1 Thursday, March 19, 2009 (open access)

Today Newspapers (Duncanville, Tex.), Vol. 1, No. 1, Ed. 1 Thursday, March 19, 2009

Weekly newspaper from Duncanville, Texas that includes local, state, and national news along with advertising.
Date: March 19, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 111, No. 100, Ed. 1 Friday, March 13, 2009 (open access)

Sweetwater Reporter (Sweetwater, Tex.), Vol. 111, No. 100, Ed. 1 Friday, March 13, 2009

Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date: March 13, 2009
Creator: Rodriguez, Tatiana
Object Type: Newspaper
System: The Portal to Texas History
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 38, Ed. 1 Thursday, March 5, 2009 (open access)

The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 38, Ed. 1 Thursday, March 5, 2009

Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date: March 5, 2009
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Cherokeean Herald (Rusk, Tex.), Vol. 160, No. 2, Ed. 1 Wednesday, March 4, 2009 (open access)

Cherokeean Herald (Rusk, Tex.), Vol. 160, No. 2, Ed. 1 Wednesday, March 4, 2009

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date: March 4, 2009
Creator: Whitehead, Marie
Object Type: Newspaper
System: The Portal to Texas History
Mannford Eagle (Mannford, Okla.), Vol. 27, No. 43, Ed. 1 Wednesday, March 11, 2009 (open access)

Mannford Eagle (Mannford, Okla.), Vol. 27, No. 43, Ed. 1 Wednesday, March 11, 2009

Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date: March 11, 2009
Creator: Hughes, Dustin
Object Type: Newspaper
System: The Gateway to Oklahoma History