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Radiological Contingency Planning for the Mars Science Laboratory Launch (open access)

Radiological Contingency Planning for the Mars Science Laboratory Launch

The U.S. Department of Energy (DOE) provides technical support to the requesting federal agency such as the Federal Bureau of Investigation, Department of Defense, the National Space and Aeronautics and Space Administration (NASA), or a state agency to address the radiological consequences of an event. These activities include measures to alleviate damage, loss, hardship, or suffering caused by the incident; protect public health and safety; restore essential government services; and provide emergency assistance to those affected. Scheduled to launch in the fall of 2009, Mars Science Laboratory is part of NASA's Mars Exploration Program, a long-term effort of robotic exploration of the red planet. Mars Science Laboratory is a rover that will assess whether Mars ever was, or is still today, an environment able to support microbial life. In other words, its mission is to determine the planet's "habitability." The Mars Science Laboratory rover will carry a radioisotope power system that generates electricity from the heat of plutonium's radioactive decay. This power source gives the mission an operating lifespan on Mars' surface of a full Martian year (687 Earth days) or more, while also providing significantly greater mobility and operational flexibility, enhanced science payload capability, and exploration of a much …
Date: March 1, 2008
Creator: Guss, Paul
Object Type: Article
System: The UNT Digital Library
Science Priorities for Mars Sample Return (open access)

Science Priorities for Mars Sample Return

None
Date: February 11, 2008
Creator: Borg, L.; Des Marais, D. & Beaty, D.
Object Type: Report
System: The UNT Digital Library
Radiological Contingency Planning for the Mars Science Laboratory Launch (open access)

Radiological Contingency Planning for the Mars Science Laboratory Launch

This paper describes the contingency planning for the launch of the Mars Science Laboratory scheduled for the 21-day window beginning on September 15, 2009. National Security Technologies, LLC (NSTec), based in Las Vegas, Nevada, will support the U.S. Department of Energy (DOE) in its role for managing the overall radiological contingency planning support effort. This paper will focus on new technologies that NSTec’s Remote Sensing Laboratory (RSL) is developing to enhance the overall response capability that would be required for a highly unlikely anomaly. This paper presents recent advances in collecting and collating data transmitted from deployed teams and sensors. RSL is responsible to prepare the contingency planning for a range of areas from monitoring and assessment, sample collection and control, contaminated material release criteria, data management, reporting, recording, and even communications. The tools RSL has available to support these efforts will be reported. The data platform RSL will provide shall also be compatible with integration of assets and field data acquired with other DOE, National Aeronautics and Space Administration, state, and local resources, personnel, and equipment. This paper also outlines the organizational structure for response elements in radiological contingency planning.
Date: April 16, 2008
Creator: Paul Guss, Robert Augdahl, Bill Nickels, Cassandra Zellers
Object Type: Article
System: The UNT Digital Library
Radiological Contingency Planning for the Mars Science Laboratory Launch (open access)

Radiological Contingency Planning for the Mars Science Laboratory Launch

None
Date: March 1, 2008
Creator: Guss, Paul
Object Type: Article
System: The UNT Digital Library
Radiological Contingency Planning for the Mars Science Laboratory Launch (open access)

Radiological Contingency Planning for the Mars Science Laboratory Launch

This paper describes the contingency planning for the launch of the Mars Science Laboratory scheduled for the 21-day window beginning on September 15, 2009. National Security Technologies, LLC (NSTec), based in Las Vegas, Nevada, will support the U.S. Department of Energy (DOE) in its role for managing the overall radiological contingency planning support effort. This paper will focus on new technologies that NSTec’s Remote Sensing Laboratory (RSL) is developing to enhance the overall response capability that would be required for a highly unlikely anomaly. This paper presents recent advances in collecting and collating data transmitted from deployed teams and sensors. RSL is responsible to prepare the contingency planning for a range of areas from monitoring and assessment, sample collection and control, contaminated material release criteria, data management, reporting, recording, and even communications. The tools RSL has available to support these efforts will be reported. The data platform RSL will provide shall also be compatible with integration of assets and field data acquired with other DOE, National Space and Aeronautics and Space Administration (NASA), state, and local resources, personnel, and equipment. This paper also outlines the organizational structure for response elements in radiological contingency planning.
Date: April 1, 2008
Creator: Guss, Paul P.
Object Type: Article
System: The UNT Digital Library
Basalt weathering rates on Earth and the duration of liquid water on the plains of Gusev Crater, Mars (open access)

Basalt weathering rates on Earth and the duration of liquid water on the plains of Gusev Crater, Mars

Where Martian rocks have been exposed to liquid water, chemistry versus depth profiles could elucidate both Martian climate history and potential for life. The persistence of primary minerals in weathered profiles constrains the exposure time to liquid water: on Earth, mineral persistence times range from {approx}10 ka (olivine) to {approx}250 ka (glass) to {approx}1Ma (pyroxene) to {approx}5Ma (plagioclase). Such persistence times suggest mineral persistence minima on Mars. However, Martian solutions may have been more acidic than on Earth. Relative mineral weathering rates observed for basalt in Svalbard (Norway) and Costa Rica demonstrate that laboratory pH trends can be used to estimate exposure to liquid water both qualitatively (mineral absence or presence) and quantitatively (using reactive transport models). Qualitatively, if the Martian solution pH > {approx}2, glass should persist longer than olivine; therefore, persistence of glass may be a pH-indicator. With evidence for the pH of weathering, the reactive transport code CrunchFlow can quantitatively calculate the minimum duration of exposure to liquid water consistent with a chemical profile. For the profile measured on the surface of Humphrey in Gusev Crater, the minimum exposure time is 22 ka. If correct, this estimate is consistent with short-term, episodic alteration accompanied by ongoing surface …
Date: March 15, 2008
Creator: Steefel, Carl; Hausrath, E. M.; Navarre-Sitchler, A. K.; Sak, P. B.; Steefel, C. & Brantley, S. L.
Object Type: Article
System: The UNT Digital Library
U.S. Civilian Space Policy Priorities: Reflections 50 Years After Sputnik (open access)

U.S. Civilian Space Policy Priorities: Reflections 50 Years After Sputnik

This report describes Sputnik and its influence on today's U.S. civilian space policy, the actions other nations and commercial organizations are taking in space exploration, and why the nation invests in space exploration and the public's attitude toward it. The report concludes with a discussion of possible options for future U.S. civilian space policy priorities and the implication of those priorities.
Date: June 20, 2008
Creator: Stine, Deborah D.
Object Type: Report
System: The UNT Digital Library
[National Aeronautics and Space Administration: Overview, FY2008 Budget in Brief, and Key Issues for Congress, January 9, 2008] (open access)

[National Aeronautics and Space Administration: Overview, FY2008 Budget in Brief, and Key Issues for Congress, January 9, 2008]

This report discusses the budget of the fiscal year of 2008 and the requests of the National Aeronautics and Space Administration. Updated January 9, 2008.
Date: January 9, 2008
Creator: Morgan, Daniel & Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
National Aeronautics and Space Administration: Overview, FY2009 Budget, and Issues for Congress (open access)

National Aeronautics and Space Administration: Overview, FY2009 Budget, and Issues for Congress

This report discusses the budget of the fiscal year of 2009 and the requests of the National Aeronautics and Space Administration.
Date: February 26, 2008
Creator: Morgan, Daniel & Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
Sunfall: a collaborative visual analytics system for astrophysics (open access)

Sunfall: a collaborative visual analytics system for astrophysics

Computational and experimental sciences produce and collect ever-larger and complex datasets, often in large-scale, multi-institution projects. The inability to gain insight into complex scientific phenomena using current software tools is a bottleneck facing virtually all endeavors of science. In this paper, we introduce Sunfall, a collaborative visual analytics system developed for the Nearby Supernova Factory, an international astrophysics experiment and the largest data volume supernova search currently in operation. Sunfall utilizes novel interactive visualization and analysis techniques to facilitate deeper scientific insight into complex, noisy, high-dimensional, high-volume, time-critical data. The system combines novel image processing algorithms, statistical analysis, and machine learning with highly interactive visual interfaces to enable collaborative, user-driven scientific exploration of supernova image and spectral data. Sunfall is currently in operation at the Nearby Supernova Factory; it is the first visual analytics system in production use at a major astrophysics project.
Date: July 7, 2008
Creator: Aragon, Cecilia R.; Aragon, Cecilia R.; Bailey, Stephen J.; Poon, Sarah; Runge, Karl & Thomas, Rollin C.
Object Type: Article
System: The UNT Digital Library
Laboratory Directed Research and Development Program FY 2007 Annual Report (open access)

Laboratory Directed Research and Development Program FY 2007 Annual Report

The Oak Ridge National Laboratory (ORNL) Laboratory Directed Research and Development (LDRD) program reports its status to the U.S. Department of Energy (DOE) in March of each year. The program operates under the authority of DOE Order 413.2B, 'Laboratory Directed Research and Development' (April 19, 2006), which establishes DOE's requirements for the program while providing the Laboratory Director broad flexibility for program implementation. LDRD funds are obtained through a charge to all Laboratory programs. This report includes summaries for all ORNL LDRD research activities supported during FY 2007. The associated FY 2007 ORNL LDRD Self-Assessment (ORNL/PPA-2008/2) provides financial data and an internal evaluation of the program's management process. ORNL is a DOE multiprogram science, technology, and energy laboratory with distinctive capabilities in materials science and engineering, neutron science and technology, energy production and end-use technologies, biological and environmental science, and scientific computing. With these capabilities ORNL conducts basic and applied research and development (R&D) to support DOE's overarching mission to advance the national, economic, and energy security of the United States and promote scientific and technological innovation in support of that mission. As a national resource, the Laboratory also applies its capabilities and skills to specific needs of other federal …
Date: April 1, 2008
Creator: Sjoreen, Terrence P
Object Type: Report
System: The UNT Digital Library
National Aeronautics and Space Administration: Overview, FY2009 Budget, and Issues for Congress (open access)

National Aeronautics and Space Administration: Overview, FY2009 Budget, and Issues for Congress

The National Aeronautics and Space Administration (NASA) conducts U.S. civilian space and aeronautics activities. For FY2009, the Administration requested $17.614 billion for NASA, and increase of 1.8% from the FY2008 appropriation of $17.309 billion. The President's 2004 Moon/Mars Vision for Space Exploration is the major focus of NASA's activities. Issues for Congress regarding this goal include the development of new vehicles for human spaceflight, plans for the transition to these vehicles after the space shuttle is retired in 2010, and the balance in NASA's priorities between human space exploration and the agency's activities in science and aeronautics.
Date: October 29, 2008
Creator: Morgan, Daniel & Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
National Aeronautics and Space Administration: Overview, FY2009 Budget, and Issues for Congress (open access)

National Aeronautics and Space Administration: Overview, FY2009 Budget, and Issues for Congress

This report discusses budget issues for the National Aeronautics and Space Administration (NASA), which conducts U.S. civilian space and aeronautics activities. The President's 2004 Moon/Mars Vision for Space Exploration is the major focus of NASA's activities.
Date: June 19, 2008
Creator: Morgan, Daniel & Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
Disturbance of isotope systematics in meteorites during shock and thermal metamorphism and implications for shergottite chronology (open access)

Disturbance of isotope systematics in meteorites during shock and thermal metamorphism and implications for shergottite chronology

Shock and thermal metamorphism of meteorites from differentiated bodies such as the Moon and Mars have the potential to disturb chronometric information contained in these meteorites. In order to understand the impact-related mechanisms and extent of disturbance to isochrons, we undertook experiments to shock and heat samples of 10017, a 3.6 billion year old lunar basalt. One sub-sample was shocked to 55 GPa, a second subsample was heated to 1000 C for one week, and a third sub-sample was maintained as a control sample. Of the isotope systems analyzed, the Sm-Nd system was the least disturbed by shock or heat, followed by the Rb-Sr system. Ages represented by the {sup 238}U-{sup 206}Pb isotope system were degraded by shock and destroyed with heating. In no case did either shock or heating alone result in rotated or reset isochrons that represent a spurious age. In some cases the true crystallization age of the sample was preserved, and in other cases age information was degraded or destroyed. Although our results show that neither shock nor thermal metamorphism alone can account for the discordant ages represented by different isotope systems in martian meteorites, we postulate that shock metamorphism may render a meteorite more susceptible …
Date: December 10, 2008
Creator: Gaffney, Amy M.; Borg, Lars E. & Asmerom, Yemane
Object Type: Article
System: The UNT Digital Library
Hubble Space Telescope: NASA's Plans for a Servicing Mission (open access)

Hubble Space Telescope: NASA's Plans for a Servicing Mission

The National Aeronautics and Space Administration (NASA) estimates that without a servicing mission to replace key components, the Hubble Space Telescope will cease scientific operations in 2008. In January 2004, then-NASA Administrator Sean O'Keefe announced that the space shuttle would no longer be used to service Hubble. Hubble supporters criticized this as a result of President Bush's new Vision for Space Exploration; said supporters sought to reverse the decision and proceed with a shuttle servicing mission. In October 2006, NASA approved a shuttle mission to service Hubble. That mission is now scheduled for October 8, 2008.
Date: May 23, 2008
Creator: Morgan, Daniel
Object Type: Report
System: The UNT Digital Library
NASA: Ares I and Orion Project Risks and Key Indicators to Measure Progress (open access)

NASA: Ares I and Orion Project Risks and Key Indicators to Measure Progress

Testimony issued by the Government Accountability Office with an abstract that begins "The National Aeronautics and Space Administration (NASA) is in the midst of two new development efforts as part of the Constellation Program--the Ares I Crew Launch Vehicle and the Orion Crew Exploration Vehicle. These projects are critical to the success of the overall program, which will return humans to spaceflight after Space Shuttle retirement in 2010. To reduce the gap in human spaceflight, NASA plans to launch Ares I and Orion in 2015--5 years after the Shuttle's retirement. GAO has issued a number of reports and testimonies that touch on various aspects of NASA's Constellation Program, particularly the development efforts underway for the Orion and Ares I projects. These reports and testimonies have questioned the affordability and overall acquisition strategy for each project. NASA has revised the Orion acquisition strategy and delayed the Ares I preliminary design review based on GAO's recommendations in these reports. In addition, GAO continues to monitor these projects on an ongoing basis at the request of members of Congress. Based on this work, GAO was asked to testify on the types of challenges that NASA faces in developing the Ares I and Orion …
Date: April 3, 2008
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Advanced Materials for Mercury 50 Gas Turbine Combustion System (open access)

Advanced Materials for Mercury 50 Gas Turbine Combustion System

Solar Turbines Incorporated (Solar), under cooperative agreement number DE-FC26-0CH11049, has conducted development activities to improve the durability of the Mercury 50 combustion system to 30,000 hours life and reduced life cycle costs. This project is part of Advanced Materials in the Advanced Industrial Gas Turbines program in DOE's Office of Distributed Energy. The targeted development engine was the Mercury{trademark} 50 gas turbine, which was developed by Solar under the DOE Advanced Turbine Systems program (DOE contract number DE-FC21-95MC31173). As a generator set, the Mercury 50 is used for distributed power and combined heat and power generation and is designed to achieve 38.5% electrical efficiency, reduced cost of electricity, and single digit emissions. The original program goal was 20,000 hours life, however, this goal was increased to be consistent with Solar's standard 30,000 hour time before overhaul for production engines. Through changes to the combustor design to incorporate effusion cooling in the Generation 3 Mercury 50 engine, which resulted in a drop in the combustor wall temperature, the current standard thermal barrier coated liner was predicted to have 18,000 hours life. With the addition of the advanced materials technology being evaluated under this program, the combustor life is predicted to be …
Date: September 30, 2008
Creator: Price, Jeffrey
Object Type: Report
System: The UNT Digital Library
Earth Sciences Division Research Summaries 2006-2007 (open access)

Earth Sciences Division Research Summaries 2006-2007

Research in earth and atmospheric sciences has become increasingly important in light of the energy, climate change, and other environmental issues facing the United States and the world. The development of new energy resources other than fossil hydrocarbons, the safe disposal of nuclear waste and greenhouse gases, and a detailed understanding of the climatic consequences of our energy choices are all critical to meeting energy needs while ensuring environmental safety. The cleanup of underground contamination and the preservation and management of water supplies continue to provide challenges, as they will for generations into the future. To address the critical energy and environmental issues requires continuing advances in our knowledge of Earth systems and our ability to translate that knowledge into new technologies. The fundamental Earth science research common to energy and environmental issues largely involves the physics, chemistry, and biology of fluids in and on the Earth. To manage Earth fluids requires the ability to understand their properties and behavior at the most fundamental molecular level, as well as prediction, characterization, imaging, and manipulation of those fluids and their behavior in real Earth reservoirs. The broad range of disciplinary expertise, the huge range of spatial and time scales, and the …
Date: July 21, 2008
Creator: DePaolo, Donald & DePaolo, Donald
Object Type: Report
System: The UNT Digital Library
The Sachse News (Sachse, Tex.), Vol. 4, No. 20, Ed. 1 Thursday, June 12, 2008 (open access)

The Sachse News (Sachse, Tex.), Vol. 4, No. 20, Ed. 1 Thursday, June 12, 2008

Weekly newspaper from Sachse, Texas that includes local, state and national news along with advertising.
Date: June 12, 2008
Creator: Fisher, Donnita Nesbit
Object Type: Newspaper
System: The Portal to Texas History
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 14, Ed. 1 Thursday, July 3, 2008 (open access)

The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 14, Ed. 1 Thursday, July 3, 2008

Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date: July 3, 2008
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Lunar Wireless Power Transfer Feasibility Study (open access)

Lunar Wireless Power Transfer Feasibility Study

This study examines the feasibility of a multi-kilowatt wireless radio frequency (RF) power system to transfer power between lunar base facilities. Initial analyses, show that wireless power transfer (WPT) systems can be more efficient and less expensive than traditional wired approaches for certain lunar and terrestrial applications. The study includes evaluations of the fundamental limitations of lunar WPT systems, the interrelationships of possible operational parameters, and a baseline design approach for a notionial system that could be used in the near future to power remote facilities at a lunar base. Our notional system includes state-of-the-art photovoltaics (PVs), high-efficiency microwave transmitters, low-mass large-aperture high-power transmit antennas, high-efficiency large-area rectenna receiving arrays, and reconfigurable DC combining circuitry.
Date: June 1, 2008
Creator: Sheldon Freid, et al.
Object Type: Report
System: The UNT Digital Library
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 20, Ed. 1 Thursday, August 14, 2008 (open access)

The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 20, Ed. 1 Thursday, August 14, 2008

Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date: August 14, 2008
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Dublin Citizen (Dublin, Tex.), Vol. 18, No. 36, Ed. 1 Thursday, May 8, 2008 (open access)

The Dublin Citizen (Dublin, Tex.), Vol. 18, No. 36, Ed. 1 Thursday, May 8, 2008

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date: May 8, 2008
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 38, Ed. 1 Thursday, December 18, 2008 (open access)

The Wynnewood Gazette (Wynnewood, Okla.), Vol. 106, No. 38, Ed. 1 Thursday, December 18, 2008

Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date: December 18, 2008
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History