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United States Census Map Collection
5,315
Office of Scientific & Technical Information Technical Reports
469
Congressional Research Service Reports
222
Texas State Publications
53
Government Accountability Office Reports
41
Federal Register
21
End of Term Publications
11
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Texas Parks & Wildlife, Volume 68, Number 12, December 2010
Magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date:
December 2010
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas EMS Magazine, Volume 31, Number 6, November/December 2010
Bimonthly magazine containing news and information that pertains to Emergency Medical Service (EMS) providers. "The magazine's goals are to help organizations function professionally as EMS providers, to educate individuals so they can perform lifesaving prehospital skills under stressful conditions, and to help the public get into the EMS system when they need it" (p. 4).
Date:
December 2010
Creator:
Texas. Department of State Health Services.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Managing Lawn Problems in Texas
Pamphlet describing common lawn problems (fungal diseases, lawn stresses, and weeds) and information on choosing turf, maintaining a lawn, and testing soil, with a section on frequently asked questions.
Date:
December 2010
Creator:
Texas Commission on Environmental Quality
Object Type:
Pamphlet
System:
The Portal to Texas History
Mulching and Composting
Pamphlet describing how to use mulch and how to make and use compost, troubleshooting common compost problems, and answering frequently asked questions.
Date:
December 2010
Creator:
Texas Commission on Environmental Quality
Object Type:
Pamphlet
System:
The Portal to Texas History
Biennial report to the 82nd Texas legislature
This is the the State Office of Risk Management Biennial Report, as the guidelines for oversight in developing and maintaining effective risk management programs; specialized assistance and training; comprehensive data collection, monitoring, and analysis; and the workers’ compensation program.
Date:
December 31, 2010
Creator:
Texas. State Office of Risk Management.
Object Type:
Report
System:
The Portal to Texas History
Texas Travel Log, December 2010
Newsletter dedicated to traveling in Texas, including information about news, locations, and events of interest to visitors as well as statistics and summaries of travel in the state.
Date:
December 2010
Creator:
Texas. Travel and Information Division.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Highways, Volume 57, Number 12, December 2010
Monthly travel magazine discussing locations and events in Texas to encourage travel within the state.
Date:
December 2010
Creator:
Texas. Travel Information Division.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
A Review of Treasury's Foreclosure Prevention Programs
December report of the U.S. Congressional Oversight Panel describing their activities and findings regarding the U.S. Treasury's foreclosure prevention effort, the Home Affordable Modification Program (HAMP). The report includes sections on the current performance of HAMP and suggestions on improvements for the future.
Date:
December 14, 2010
Creator:
United States. Congressional Oversight Panel.
Object Type:
Report
System:
The UNT Digital Library
The Moment of Truth: Report of the National Commission on Fiscal Responsibility and Reform
Report of the National Commission on Fiscal Responsibility and Reform addresses its mission to bring the federal budget into primary balance in 2015 and to meaningfully improve the long-run fiscal outlook. The report proposes a plan with six major components: discretionary spending cuts, comprehensive tax reform, health care cost containment, mandatory savings, Social Security reforms, and process changes.
Date:
December 2010
Creator:
United States. National Commission on Fiscal Responsibility and Reform.
Object Type:
Report
System:
The UNT Digital Library
No experience necessary!
Pamphlet advertising a camping program on various dates on which people can camp.
Date:
December 2010
Creator:
Texas. Parks and Wildlife Department. Texas Outdoor Family.
Object Type:
Pamphlet
System:
The Portal to Texas History
Final Report for "Center for Technology for Advanced Scientific Component Software"
The goal of the Center for Technology for Advanced Scientific Component Software is to fundamentally changing the way scientific software is developed and used by bringing component-based software development technologies to high-performance scientific and engineering computing. The role of Tech-X work in TASCS project is to provide an outreach to accelerator physics and fusion applications by introducing TASCS tools into applications, testing tools in the applications and modifying the tools to be more usable.
Date:
December 1, 2010
Creator:
Shasharina, Svetlana
Object Type:
Report
System:
The UNT Digital Library
The Gas Flow from the Gas Attenuator to the Beam Line
The gas leak from the gas attenuator to the main beam line of the Linac Coherent Light Source has been evaluated, with the effect of the Knudsen molecular beam included. It has been found that the gas leak from the gas attenuator of the present design, with nitrogen as a working gas, does not exceed 10{sup -5} torr x l/s even at the highest pressure in the main attenuation cell (20 torr).
Date:
December 3, 2010
Creator:
Ryutov, D. D.
Object Type:
Report
System:
The UNT Digital Library
Final Technical Report: Improvement of Zymomonas mobilis for Commercial Use in Corn-based Biorefineries
Between 2007 and 2010 DuPont conducted a program under DOE award DE-FC36-07GO17056 to develop and improve Zymomonas mobilis as an ethanologen for commercial use in biorefineries to produce cellulosic ethanol. This program followed upon an earlier DOE funded program in which DuPont, in collaboration with the National Renewable Energy Laboratory (NREL) had developed a Zymomonas strain in conjunction with the development of an integrated cellulosic ethanol process. In the current project, we sought to maximize the utility of Zymomonas by adding the pathway to allow fermentation of the minor sugar arabinose, improve the utilization of xylose, improve tolerance to process hydrolysate and reduce the cost of producing the ethanologen. We undertook four major work streams to address these tasks, employing a range of approaches including genetic engineering, adaptation, metabolite and pathway analysis and fermentation process development. Through this project, we have developed a series of strains with improved characteristics versus the starting strain, and demonstrated robust scalability to at least the 200L scale. By a combination of improved ethanol fermentation yield and titer as well as reduced seed train costs, we have been able to reduce the capital investment and minimum ethanol selling price (MESP) by approximately 8.5% and 11% …
Date:
December 7, 2010
Creator:
Hitz, William D.
Object Type:
Report
System:
The UNT Digital Library
Algorithms to Automate LCLS Undulator Tuning
Automation of the LCLS undulator tuning offers many advantages to the project. Automation can make a substantial reduction in the amount of time the tuning takes. Undulator tuning is fairly complex and automation can make the final tuning less dependent on the skill of the operator. Also, algorithms are fixed and can be scrutinized and reviewed, as opposed to an individual doing the tuning by hand. This note presents algorithms implemented in a computer program written for LCLS undulator tuning. The LCLS undulators must meet the following specifications. The maximum trajectory walkoff must be less than 5 {micro}m over 10 m. The first field integral must be below 40 x 10{sup -6} Tm. The second field integral must be below 50 x 10{sup -6} Tm{sup 2}. The phase error between the electron motion and the radiation field must be less than 10 degrees in an undulator. The K parameter must have the value of 3.5000 {+-} 0.0005. The phase matching from the break regions into the undulator must be accurate to better than 10 degrees. A phase change of 113 x 2{pi} must take place over a distance of 3.656 m centered on the undulator. Achieving these requirements is the …
Date:
December 3, 2010
Creator:
Wolf, Zachary
Object Type:
Report
System:
The UNT Digital Library
Absorbed XFEL Dose in the Components of the LCLS X-Ray Optics
There is great concern that the short, intense XFEL pulse of the LCLS will damage the optics that will be placed into the beam. We have analyzed the extent of the problem by considering the anticipated materials and position of the optical components in the beam path, calculated the absorbed dose as a function of photon energy, and compared these doses with the expected doses required (i) to observe rapid degradation due to thermal fatigue, (ii) to reach the melting temperature, or (iii) to actually melt the material. We list the materials that are anticipated to be placed into the Linac Coherent Light Source (LCLS) x-ray free electron laser (XFEL) beam line, their positions, and the absorbed dose, and compare this dose with anticipated damage thresholds.
Date:
December 3, 2010
Creator:
Hau-Riege, Stefan
Object Type:
Report
System:
The UNT Digital Library
Growth in Biofuels Markets: Long Term Environmental and Socioeconomic Impacts (Final Report)
Over the last several years increasing energy and petroleum prices have propelled biofuels and the feedstocks used to produce them, to the forefront of alternative energy production. This growth has increased the linkages between energy and agricultural markets and these changes around the world are having a significant effect on agricultural markets as biofuels begin to play a more substantial role in meeting the world's energy needs. Biofuels are alternatively seen as a means to reduce carbon emissions, increase energy independence, support rural development and to raise farm income. However, concern has arisen that the new demand for traditional commodities or alternative commodities which compete for land can lead to higher food prices and the environmental effects from expanding crop acreage may result in uncertain changes in carbon emissions as land is converted both in the US and abroad. While a number of studies examine changes in land use and consumption from changes in biofuels policies many lack effective policy representation or complete coverage of land types which may be diverted in to energy feedstock production. Many of these biofuels and renewable energy induced land use changes are likely to occur in developing countries with at-risk consumers and on environmentally …
Date:
December 2, 2010
Creator:
Meyer, Seth D. & Kalaitzandonakes, Nicholas
Object Type:
Report
System:
The UNT Digital Library
LCLS Heavy Met Outgassing Tests
A Heavy Met that is 95% tungsten, 3% nickel and 2% iron and sintered to 100% density and is Ultra High Vacuum (UHV) compatible is proposed for use as the X-ray slit in the Front End Enclosure and the Fixed Mask for the Linac Coherent Light Source (LCLS). The Heavy Met was tested in the LLNL Vacuum Sciences and Engineering Lab (VSEL) to determine its outgassing rate and its overall compatibility with the vacuum requirements for LCLS.
Date:
December 1, 2010
Creator:
Kishiyama, K. I.
Object Type:
Report
System:
The UNT Digital Library
Tuning The Laser Heater Undulator
The laser heater undulator for the LCLS requires different tuning techniques than the main undulators. It is a pure permanent magnet (PPM) undulator, rather than the hybrid design of the main undulators. The PPM design allows analytic calculation of the undulator fields. The calculations let errors be introduced and correction techniques be derived. This note describes how the undulator was modelled, and the methods which were found to correct potential errors in the undulator. The laser heater undulator for the LCLS is a pure permanent magnet device requiring different tuning techniques than the main undulators. In this note, the laser heater undulator is modelled and tuning techniques to compensate various errors are derived.
Date:
December 3, 2010
Creator:
Wolf, Zackary
Object Type:
Report
System:
The UNT Digital Library
Collaborative research on amine borane regeneration and market analysis of hydrogen storage materials.
This report describes Collaborative research on amine borane regeneration and market analysis of hydrogen storage materials.
Date:
December 6, 2010
Creator:
Schubert, David
Object Type:
Report
System:
The UNT Digital Library
Transverse Coherence of the LCLS X-Ray Beam
Self-amplifying spontaneous radiation free-electron lasers, such as the LCLS or the European X-FEL, rely on the incoherent, spontaneous radiation as the seed for the amplifying process. Though this method overcomes the need for an external seed source one drawback is the incoherence of the effective seed signal. The FEL process allows for a natural growth of the coherence because the radiation phase information is spread out within the bunch due to slippage and diffraction of the radiation field. However, at short wavelengths this spreading is not sufficient to achieve complete coherence. In this presentation we report on the results of numerical simulations of the LCLS X-ray FEL. From the obtained radiation field distribution the coherence properties are extracted to help to characterize the FEL as a light source.
Date:
December 1, 2010
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Estimate of Undulator Magnet Damage Due to Beam Finder Wire Measurements
Beam Finder Wire (BFW) devices will be installed at each break in the Undulator magnet line. These devices will scan small wires across the beam causing some electrons to lose energy through bremsstrahlung. The degraded electrons are subsequently detected downstream of a set of vertical dipole magnets after they pass through the vacuum chamber. This signal can then be used to accurately determine the beam position with respect to the BFW wire. The choice of the wire diameter, scan speed, and operating parameters, depends on the trade-off between the signal size and the radiation damage to the undulator magnets. In this note I estimate the rate of undulator magnet damage that results from scanning as a function of, wire size, scan speed, and average beam current. A separate analysis of the signal size was carried out by Wu. The damage estimate is primarily based on two sources: the first, Fasso, is used to estimate the amount of radiation generated and then absorbed by the magnets; the second, Alderman et. al., is used to estimate the amount of damage the magnet undergoes as a result of the absorbed radiation. Fasso performed a detailed calculation of the radiation, including neutron fluence, that …
Date:
December 3, 2010
Creator:
Welch, J.
Object Type:
Report
System:
The UNT Digital Library
Proposal for the Alignment of the 'Loose End'
The 'loose end' of the girder presents an alignment problem because there is no beam based alignment procedure available to position it. The positioning always depends on the fiducialization of the undulator. A direct way to position the 'loose end' to the next quadrupole is to measure their fiducials in relation to each other. By spanning a wire over a distance of several girders, each undulator and quadrupole can be measured by reading its distance to the wire with a portable wire sensor. The pitch of a girder can be determined by measuring height differences at different points on the girder. To measure the height differences a portable HLS is used. During the measurements of the portable system the permanent Wire Position Monitor and the permanent HLS are used to monitor the interim movements of the girder. After the initial alignment the position of the 'loose end' can be monitored with the permanent systems in relation to the quadrupoles.
Date:
December 1, 2010
Creator:
Gassner, Georg
Object Type:
Report
System:
The UNT Digital Library
Cold Test Measurements on the GTF Prototype RF Gun
The SSRL Gun Test Facility (GTF) was built to develop a high brightness electron injector for the LCLS and has been operational since 1996. Based on longitudinal phase space measurements showing a correlated energy spread the gun was removed and re-characterized in 2002. The low power RF measurements performed on the gun are described below. Perturbative bead measurements were performed to determine the field ratio in the two-cell gun, and network analyzer measurements were made to characterize the mode structure. A second probe was installed to monitor the RF field in the first cell, and a diagnostic was developed to monitor the high-power field ratio. Calibration of the RF probes, a model for analyzing RF measurements, and Superfish simulations of bead and RF measurements are described.
Date:
December 3, 2010
Creator:
Gierman, S.M.
Object Type:
Report
System:
The UNT Digital Library
Western Nuclear Science Alliance
The primary objective of the INIE program is to strengthen nuclear science and engineering programs at the member institutions and to address the long term goal of the University Reactor Infrastructure and Education Assistance Program.
Date:
December 7, 2010
Creator:
Reese, Steve; Miller, George; Frantz, Stephen; Beller, Denis; Beller, Denis; Morse, Ed et al.
Object Type:
Report
System:
The UNT Digital Library