Sample records for mars rover curiosity

  1. Curiosity rover zaps Mars for life signs

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    trio is an essential component of the heat-producing Multi-Mission Radioisotope Thermoelectric Generator unit. It powers the rover and keeps the instruments from freezing solid...

  2. Curiosity Mars Rover's ChemCam | Department of Energy

    Office of Environmental Management (EM)

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  3. Curiosity rover zaps Mars for life signs

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  4. Curiosity rover zaps Mars for life signs July 30, 2012

    E-Print Network [OSTI]

    thermoelectric generators (RTGs), will give Curiosity several times more electricity as previous-generation down on the surface of the Red Planet in August 2012. · Radioisotope batteries are providing power the plutonium canisters that will provide power and heat to the rover. The power sources, called radioisotope

  5. Laboratory Curiosity rover ChemCam team, including Los Alamos...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    MEXICO, August 23, 2012-Members of the Mars Science Laboratory Curiosity rover ChemCam team, including Los Alamos National Laboratory scientists, squeezed in a little extra target...

  6. Laser-Firing ChemCam Vital to Curiosity Rover's Tour of Mars | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

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  7. Mars Curiosity Rover Report (Sept. 9, 2012) Hello, my name is Saina Ghandchi. I am a member of engineering, operations

    E-Print Network [OSTI]

    atmospheric measurements with our instrument, SAM. Scientists are going through the data at this point and Im is the composition of the Martian atmosphere. We also received these color beautiful HiRise images. They show clearly the rover tracks in these images. Our goal is to get to Glenelg, which is 400 meters to the east

  8. Mars Rover RTG Study

    SciTech Connect (OSTI)

    Schock, Alfred

    1989-08-25T23:59:59.000Z

    This report summarizes the results of a Radioisotope Thermoelectric Generator (RTG) design study conducted by Fairchild Space Company at the direction of the U.S. Department of Energy's Office of SpecialApplications, in suppport of the Mars Rover and Sample Return mission under investigation at NASA's Jet Propulsion Laboratory. The report is a rearranged, updated, and significantly expanded amalgam of three interrelated papers presented at the 24th Intersocity Energy Conversion Engineering Conference (IECEC) at Arlington, Virginia, on August 10, 1989.

  9. Planning Considerations Related to the Organic Contamination of Martian Samples and Implications for the Mars 2020 Rover

    E-Print Network [OSTI]

    Sessions, A.L.

    Data gathered during recent NASA missions to Mars, particularly by the Rovers Spirit, Opportunity, and Curiosity, have provided important insights into the past history and habitability of the Red Planet. The Mars science ...

  10. Mars `Curiosity' has ORNL tech

    E-Print Network [OSTI]

    Pennycook, Steve

    . The rover's mobile instrument platform is too large to rely on solar-powered batteries and uses a plutonium's iridium alloy cladding encapsulates the fuel. Radioisotope Power Systems program manager James King

  11. The Mission of the Mars Exploration Rovers

    ScienceCinema (OSTI)

    John Grant

    2010-01-08T23:59:59.000Z

    The Mars Exploration Rover mission was expected to last 3 months, but has continued for more than 4 years. The major science results from both rovers will be summarized.

  12. Water for future Mars astronauts?

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Water for future Mars astronauts? Water for future Mars astronauts? Within its first three months on Mars, NASA's Curiosity Rover saw a surprising diversity of soils and sediments...

  13. ChemCam for Mars Science Laboratory rover, undergoing pre-flight testing

    ScienceCinema (OSTI)

    None

    2014-08-12T23:59:59.000Z

    Los Alamos National Laboratory and partners developed a laser instrument, ChemCam, that will ride on the elevated mast of the Mars Science Laboratory rover Curiosity. The system allows Curiosity to "zap" rocks from a distance, reading their chemical composition through spectroscopic analysis. In this video, laboratory shaker-table testing of the instrument ensures that all of its components are solidly attached and resistant to damage from the rigors of launch, travel and landing.

  14. Mars Curiosity rover talks in May

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  15. Requirements and Designs for Mars Rover RTGs

    SciTech Connect (OSTI)

    Schock, Alfred; Shirbacheh, M; Sankarankandath, V

    2012-01-19T23:59:59.000Z

    The current-generation RTGs (both GPHS and MOD) are designed for operation in a vacuum environment. The multifoil thermal insulation used in those RTGs only functions well in a good vacuum. Current RTGs are designed to operate with an inert cover gas before launch, and to be vented to space vacuum after launch. Both RTGs are sealed with a large number of metallic C-rings. Those seals are adequate for retaining the inert-gas overpressure during short-term launch operations, but would not be adequate to prevent intrusion of the Martian atmospheric gases during long-term operations there. Therefore, for the Mars Rover application, those RTGs just be modified to prevent the buildup of significant pressures of Mars atmosphere or of helium (from alpha decay of the fuel). In addition, a Mars Rover RTG needs to withstand a long-term dynamic environment that is much more severe than that seen by an RTG on an orbiting spacecraft or on a stationary planetary lander. This paper describes a typical Rover mission, its requirements, the environment it imposes on the RTG, and a design approach for making the RTG operable in such an environment. Specific RTG designs for various thermoelectric element alternatives are presented.; Reference CID #9268 and CID #9276.

  16. ChemCam rock laser for Mars Science Laboratory "Curiosity"

    ScienceCinema (OSTI)

    Wiens, Roger

    2014-08-12T23:59:59.000Z

    Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. The Flight Model was shipped in August, 2010 for installation on the rover at JPL. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components were concurrently assembled at Los Alamos and in Toulouse, France. The Mars Science Laboratory is scheduled to launch in 2011. Animations courtesy of JPL/NASA.

  17. Building Curiosity Landing System Drop Test [00:00:06]Hi, I'm Savannah McCoy and I'm the rover verification and validation lead.

    E-Print Network [OSTI]

    Waliser, Duane E.

    Building Curiosity ­ Landing System Drop Test [00:00:06]Hi, I'm Savannah McCoy and I'm the rover verification and validation lead. [00:00:11]My job is to run system-level tests on the rover's structure build two rovers in parallel. One's the flight rover [00:00:22]and one's the test rover, or DTM

  18. Celebrating the Curiosity Rover's Killer Mars Landing | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  19. Curiosity rover finds evidence of Mars' primitive continental crust

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  20. Planetary scientist to discuss Curiosity rover's visit to Mars

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  1. Mars Rover's ChemCam Instrument gets

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  2. Integration of a testbed for examining the interaction of Mars rover wheels with a Mars soil simulant

    E-Print Network [OSTI]

    Okafor, Chiedozie A. (Chiedozie Arinze)

    2011-01-01T23:59:59.000Z

    Integration and experimental testing was performed on a testbed for examining the interaction of Mars rover wheels with a Mars soil simulant. The testbed included a horizontal carriage that had a encoder to measure the ...

  3. Powering Curiosity: Lab Tech Goes to Mars | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you wantJoin us for #SpaceWeekOMBDepartmentPolicyPowering Curiosity:

  4. athena mars rover: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  5. SpiritMars Exploration Rovers National Aeronautics and

    E-Print Network [OSTI]

    Waliser, Duane E.

    hemisphere landing site. The rover's position tilted its solar panels toward the Sun to maintain enough solar power for Spirit to continue making scientific observations throughout the winter. The Pancam began

  6. Rover Technology Development and Infusion for the 2009 Mars Science Laboratory Mission

    E-Print Network [OSTI]

    Volpe, Richard

    the ongoing 2003 rover mission, funded MTP research, and other complementary sources. 1. Introduction The Mars MER is the acquisition of rock and soil samples for analysis by laboratory science instruments need further maturation and/or validation in order to demonstrate their applicability and readiness

  7. Onboard Autonomous Rock Shape Analysis For Mars Rovers

    E-Print Network [OSTI]

    in this process, we present an automated technique to allow a rover to classify the shape and other geologic were conducted by characterizing the two-dimensional rock shape while the three-dimensional shape developed and implemented. The per- formance of each measure was characterized by analyzing images from

  8. What's so cool about Curiosity? Curiosity, the Mars Science Laboratory, is the largest and most complicated device we have ever landed on a

    E-Print Network [OSTI]

    National Laboratory. The Radioisotope Thermoelectric Generator supplies electricity and heat to the rover

  9. Mars Rover's ChemCam Instrument gets sharper vision

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  10. Laser-Firing ChemCam Vital to Curiosity Rover's Tour of Mars | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

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  11. Strategies for autonomous rovers at Mars Martha S. Gilmore1

    E-Print Network [OSTI]

    Mjolsness, Eric

    , characterize the landing site and test geological hypothesis autonomously. Future missions to Mars will contain history, 3) the identification of resources and 4) the geological and geophysical history of the planet is the characterize the selected sites in detail using lander and mobile systems as is planned for the 2003

  12. Science Results from the Mars Exploration Rover Mission

    ScienceCinema (OSTI)

    Steven Squyres

    2010-09-01T23:59:59.000Z

    One of the most important scientific goals of the mission was to find and identify a variety of rocks and soils that provide evidence of the past presence of water on the planet. To obtain this information, Squyres is studying the data obtained on Mars by several sophisticated scientific instruments.

  13. Bell_Colloquium (4412)_student questions JB.pdf Student questions: Jim Bell colloquium on "Red Rover(s), Red Rover(s): Update on Mars

    E-Print Network [OSTI]

    Elser, Jim

    to their solar panels (and the dust that eventually built up on them), but seeing as how MSL is nuclear powered collect any samples of these, if this hasn't already been done? 8) Question 2: What is the difference between a Mars year and an Earth year? 9) Question 1: Which type of properties do you look for in rocks

  14. Creation and Testing of an Artificial Neural Network Based Carbonate Detector for Mars Rovers

    E-Print Network [OSTI]

    Royer, Dana

    carbonate detector capable of running on current and future rover hardware. The detector can identify result in a critical loss of valuable science data. Onboard techniques for identifying 1 0 neural network (ANN) based carbonate detector capable of running on current and future rover hardware

  15. A LANL Scientist's Dream Takes Off to Zap Rocks on Mars

    ScienceCinema (OSTI)

    Wiens, Roger

    2012-08-02T23:59:59.000Z

    Roger Wiens, with a team of 40 people at Los Alamos National Laboratory and the collaboration of the French space institute IRAP, created ChemCam, a laser spectrometer and telescope device aboard the Curiosity rover. ChemCam will blast rocks from as far as 7 meters, vaporize bits of their surfaces, and spectroscopically determine their chemical composition, aiding in the search for life on Mars, and making this scientist's boyhood dream a reality.

  16. 2005 IEEE Systems, Man, and Cybernetics Conference Proceedings, October 2005, Hawaii, USA Mars Exploration Rover Surface Operations: Driving

    E-Print Network [OSTI]

    centimeter ground clearance, and large solar panels on the top of the rover require additional clearance to tall rocks (60 centime- ters from ground to solar panel). Wheel baseline is roughly 1 meter side studied it for six months. Then it went to examine the heat shield that had protected Opportu- nity during

  17. The technology of the rover and its landing sys-tem is designed to demonstrate substantial new

    E-Print Network [OSTI]

    a large robot arm, a laser, a weather station, and a drill, the Mars Science Laboratory's jeep-sized rover

  18. Variations of dose rate observed by MSL/RAD in transit to Mars

    E-Print Network [OSTI]

    Guo, Jingnan; Wimmer-Schweingruber, Robert F; Hassler, Donald M; Posner, Arik; Heber, Bernd; Khler, Jan; Rafkin, Scot; Ehresmann, Bent; Appel, Jan K; Bhm, Eckart; Bttcher, Stephan; Burmeister, Snke; Brinza, David E; Lohf, Henning; Martin, Cesar; Reitz, Gnther

    2015-01-01T23:59:59.000Z

    Aims: To predict the cruise radiation environment related to future human missions to Mars, the correlation between solar modulation potential and the dose rate measured by the Radiation Assessment Detector (RAD) has been analyzed and empirical models have been employed to quantify this correlation. Methods: The instrument RAD, onboard Mars Science Laboratory's (MSL) rover Curiosity, measures a broad spectrum of energetic particles along with the radiation dose rate during the 253-day cruise phase as well as on the surface of Mars. With these first ever measurements inside a spacecraft from Earth to Mars, RAD observed the impulsive enhancement of dose rate during solar particle events as well as a gradual evolution of the galactic cosmic ray (GCR) induced radiation dose rate due to the modulation of the primary GCR flux by the solar magnetic field, which correlates with long-term solar activities and heliospheric rotation. Results: We analyzed the dependence of the dose rate measured by RAD on solar modulatio...

  19. Mission Overview Mars Science Laboratory

    E-Print Network [OSTI]

    thermoelectric generator produces This long-lived power supply gives the mission an operating of electrical power Curiosity to to travel up to about 200 meters (660 feet) per day on Martian - mission radioisotope to operate the rover's instruments, robotic generator's excess heat are plumbed throughout the rover to keep

  20. Reconfigurable wheels : re-inventing the wheel for the next generation of planetary rovers

    E-Print Network [OSTI]

    Baker, Brittany, S.M. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    Experiences with Spirit and Opportunity, the twin Mars Exploration Rovers, showed that one of the major issues that needs to be addressed in order to expand the exploration capabilities of planetary rovers is that of wheel ...

  1. Mimicking Mars: A vacuum simulation chamber for testing environmental instrumentation for Mars exploration

    SciTech Connect (OSTI)

    Sobrado, J. M., E-mail: sobradovj@inta.es; Martn-Soler, J. [Centro de Astrobiologa (CAB), INTA-CSIC, Torrejn de Ardoz, 28850 Madrid (Spain)] [Centro de Astrobiologa (CAB), INTA-CSIC, Torrejn de Ardoz, 28850 Madrid (Spain); Martn-Gago, J. A. [Centro de Astrobiologa (CAB), INTA-CSIC, Torrejn de Ardoz, 28850 Madrid (Spain) [Centro de Astrobiologa (CAB), INTA-CSIC, Torrejn de Ardoz, 28850 Madrid (Spain); Instituto de Ciencias de Materiales de Madrid (ICMM-CSIC), Cantoblanco, 28049 Madrid (Spain)

    2014-03-15T23:59:59.000Z

    We have built a Mars environmental simulation chamber, designed to test new electromechanical devices and instruments that could be used in space missions. We have developed this environmental system aiming at validating the meteorological station Rover Environment Monitoring Station of NASA's Mars Science Laboratory mission currently installed on Curiosity rover. The vacuum chamber has been built following a modular configuration and operates at pressures ranging from 1000 to 10{sup ?6} mbars, and it is possible to control the gas composition (the atmosphere) within this pressure range. The device (or sample) under study can be irradiated by an ultraviolet source and its temperature can be controlled in the range from 108 to 423 K. As an important improvement with respect to other simulation chambers, the atmospheric gas into the experimental chamber is cooled at the walls by the use of liquid-nitrogen heat exchangers. This chamber incorporates a dust generation mechanism designed to study Martian-dust deposition while modifying the conditions of temperature, and UV irradiated.

  2. NASA's Curiosity Rover Team Features Women Team Members | Department of

    Energy Savers [EERE]

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  3. Mars Exploration Rover (MER) Panoramic Camera (Pancam) Twilight Image Analysis for Determination of Planetary Boundary Layer and Dust Particle Size Parameters

    E-Print Network [OSTI]

    Grounds, Stephanie Beth

    2012-02-14T23:59:59.000Z

    to take surface-based measurements to offer support for dust and boundary layer measurements made from remote sensors (Lemmon et al., 2004a). Mars has different atmospheric characteristics from those on Earth. For example, the solar constant for Mars... is approximately 44% of the value for Earth (varying by approximately 20%), and the temperature ranges on Mars (- 125?C to +25?C) slightly ____________ This thesis follows the style of the Journal of Geophysical Research. 2 overlap those on Earth (- 80?C...

  4. Dreaming of Mars Sample ReturnNational Aeronautics and Space Administration Dreaming of Mars Sample ReturnSpace Administration

    E-Print Network [OSTI]

    for rover egress. #12;Mars Science Laboratory The "Rocket-on-a-Rope" approach Airbag System Landing Concept Disadvantages -Interface complexity between rover and airbags System self righting and extraction/egress-

  5. Methods and tools for the formulation, evaluation and optimization of rover mission concepts

    E-Print Network [OSTI]

    Lamamy, Julien-Alexandre, 1978-

    2007-01-01T23:59:59.000Z

    Traditionally, Mars rover missions have been conceived with a single point design approach, exploring a limited architectural trade space. The design of future missions must resolve a conflict between increasingly ambitious ...

  6. Development of legged, wheeled, and hybrid rover mobility models to facilitate planetary surface exploration mission analysis

    E-Print Network [OSTI]

    McCloskey, Scott H. (Scott Haddon)

    2007-01-01T23:59:59.000Z

    This work discusses the Mars Surface Exploration (MSE) tool and its adaptation to model rovers featuring legged, wheeled, and hybrid mobility. MSE is a MATLAB based systems engineering tool that is capable of rapidly ...

  7. Mission Overview Mars Science Laboratory

    E-Print Network [OSTI]

    Christian, Eric

    radioisotope power generator. The multi- mission radioisotope thermoelectric generator produces electricity an operating lifespan on Mars' surface of a full Mars year (687 Earth days) or more. At launch, the generator, computers and radio. Warm fluids heated by the generator's excess heat are plumbed throughout the rover

  8. Mars mission safety

    SciTech Connect (OSTI)

    Buden, D. (EG G Idaho, Idaho Falls (USA))

    1989-06-01T23:59:59.000Z

    Precautions that need to be taken to assure safety on a manned Mars mission with nuclear thermal propulsion are briefly considered. What has been learned from the 1955 SNAP-10A operation of a nuclear reactor in space and from the Rover/NERVA project is reviewed. The ways that radiation hazards can be dealt with at various stages of a Mars mission are examined.

  9. Rover Technology Development and Mission Infusion Beyond MER

    E-Print Network [OSTI]

    Volpe, Richard

    1 Rover Technology Development and Mission Infusion Beyond MER Richard Volpe Jet Propulsion ROVER TECHNOLOGY USAGE ......3 4. ROVER TECHNOLOGY INFUSION............3 5. MTP ROVER TECHNOLOGY

  10. Mars Rover : laser focusing and optimization

    E-Print Network [OSTI]

    Barkley, Walter Clifford

    2008-01-01T23:59:59.000Z

    fmax] = golden(f, ax, bx, cx, tol) %GOLDEN Minimize functionfmax] = golden(f, ax, bx, cx, tol) computes a local maximumTOL. The parameters ax, bx and cx must satisfy the following

  11. IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION, VOL. 17, NO. 6, DECEMBER 2001 939 Design and Analysis of a Sun Sensor for Planetary Rover

    E-Print Network [OSTI]

    Huntsberger, Terry

    of a Sun Sensor for Planetary Rover Absolute Heading Detection Ashitey Trebi-Ollennu, Terry Huntsberger sun sensor for absolute heading detection developed for the Field Integrated, Design and Operations of the rovers NASA/Jet Propulsion Laboratory (JPL) plans to send to Mars in 2003. Our goal was to develop a sun

  12. Powering Curiosity: Lab Tech Goes to Mars | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

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  13. Mars 'Curiosity' has ORNL tech | ornl.gov

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  14. COLLOQUIUM: Exploring Mars With Curiosity and Its Laser | Princeton Plasma

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  15. Exploring Mars with Curiosity subject of next Los Alamos National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  16. Terrain identification methods for planetary exploration rovers

    E-Print Network [OSTI]

    Brooks, Christopher Allen, 1978-

    2004-01-01T23:59:59.000Z

    Autonomous mobility in rough terrain is becoming increasingly important for planetary exploration rovers. Increased knowledge of local terrain properties is critical to ensure a rover's safety, especially when driving on ...

  17. The Ricor K508 cryocooler operational experience on Mars

    SciTech Connect (OSTI)

    Johnson, Dean L.; Lysek, Mark J.; Morookian, John Michael [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)

    2014-01-29T23:59:59.000Z

    The Mars Science Laboratory (Curiosity) landed successfully on Mars on August 5, 2012, eight months after launch. The chosen landing site of Gale Crater, located at 4.5 degrees south latitude, 137.4 degrees east longitude, has provided a much more benign environment than was originally planned for during the critical design and integration phases of the MSL Project when all possible landing sites were still being considered. The expected near-surface atmospheric temperatures at the Gale Crater landing site during Curiosity's primary mission (1 Martian year or 687 Earth days) are from ?90C to 0C. However, enclosed within Curiosity's thermal control fluid loops the Chemistry and Mineralogy (CheMin) instrument is maintained at approximately +20C. The CheMin instrument uses X-ray diffraction spectroscopy to make precise measurements of mineral constituents of Mars rocks and soil. The instrument incorporated the commercially available Ricor K508 Stirling cycle cryocooler to cool the CCD detector. After several months of brushing itself off, stretching and testing out its subsystems, Curiosity began the exploration of the Mars surface in October 2012. The CheMin instrument on the Mars Science Laboratory (MSL) received its first soil sample from Curiosity on October 24, and successfully analyzed its first soil sample. After a brief review of the rigorous Ricor K508 cooler qualification tests and life tests based on the original MSL environmental requirements this paper presents final pre-launch instrument integration and testing results, and details the operational data of the CheMin cryocooler, providing a snapshot of the resulting CheMin instrument analytical data.

  18. Delta II rocket launching the Mars Exploration Rover,

    E-Print Network [OSTI]

    Torgersen, Christian

    , global positioning systems, and defense and aerospace applications. Printed on recycled paper Ga [Ar]4s2-temperature thermometers and in designing metal alloys that melt easily. The development of a gallium-based direct band for the aerospace and telecommunications industries. They are also used in the production of highly specialized

  19. Determining Nighttime Atmospheric Optical Depth Using Mars Exploration Rover Images

    E-Print Network [OSTI]

    Bean, Keri Marie

    2013-07-22T23:59:59.000Z

    Martian clouds and dust play an important part of the radiative transfer and energy balance budget. To assist in fully understanding the impact of clouds and dust, the complete diurnal cycle needs to be characterized. One of the best methods...

  20. Thermal and Electrical Analysis of Mars Rover RTGs

    SciTech Connect (OSTI)

    Schock, Alfred; Or, Chuen T; Skrabek, Emanuel A

    2012-01-19T23:59:59.000Z

    The RTG designs described in the preceding paper in these proceedings were analyzed for their thermal and electrical performance. Each analysis consisted of coupled thermal, thermoelectric, and electrical analyses, using Fairchild-generated specialized computer codes. These were supplemented with preliminary structural and mass analyses. For each design, various cases representing different operating conditions (water-cooled/radiation-cooled, BOM/EOM, summer/winter, day/night) and different thermoelectric performance assumptions (from conservative to optimistic) were analyzed; and for every case, the heat flow rates, temperatures and electrical performance of each layer of thermoelectric elements and of the overall RTG were determined. The analyses were performed in great detail, to obtain accurate answers permitting meaningful comparisons between different designs. The results presented show the RTG performance achievable with current technology, and the performance improvements that would be achievable with various technology developments.

  1. Energy Department Nuclear Systems Are Powering Mars Rover | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal RegisterHydrogen and Fuel Cellof EnergyDepartment ofEnergy

  2. Energy Department Nuclear Systems Are Powering Mars Rover | Department of

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,OfficeEnd of Year 2010 SNF &DepartmentEnergy Nuclear Systems Are Powering

  3. Energy Department Nuclear Systems Are Powering Mars Rover

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEAWaterCool RoofsAmericanOfficedoe logo U.S. Department of

  4. Mars Rover's ChemCam Instrument gets sharper vision

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your Home and It'llMappingMariaHereld

  5. ChemCam follows the 'Yellowknife Road' to Martian wet area

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the 'Yellowknife Road' to martian wet area Researchers have tracked a trail of minerals that point to the prior presence of water at the Curiosity rover site on Mars....

  6. Beam-powered lunar rover design

    SciTech Connect (OSTI)

    Dagle, J.E.; Coomes, E.P.; Antoniak, Z.I.; Bamberger, J.A.; Bates, J.M.; Chiu, M.A.; Dodge, R.E.; Wise, J.A.

    1992-03-01T23:59:59.000Z

    Manned exploration of our nearest neighbors in the solar systems is the primary goal of the Space Exploration Initiative (SEI). An integral part of any manned lunar or planetary outpost will be a system for manned excursions over the surface of the planet. This report presents a preliminary design for a lunar rover capable of supporting four astronauts on long-duration excursions across the lunar landscape. The distinguishing feature of this rover design is that power is provided to rover via a laser beam from an independent orbiting power satellite. This system design provides very high power availability with minimal mass on the rover vehicle. With this abundance of power, and with a relatively small power-system mass contained in the rover, the vehicle can perform an impressive suite of mission-related activity. The rover might be used as the first outpost for the lunar surface (i.e., a mobile base). A mobile base has the advantage of providing extensive mission activities without the expense of establishing a fixed base. This concept has been referred to as Rove First.'' A manned over, powered through a laser beam, has been designed for travel on the lunar surface for round-trip distances in the range of 1000 km, although the actual distance traveled is not crucial since the propulsion system does not rely on energy storage. The life support system can support a 4-person crew for up to 30 days, and ample power is available for mission-related activities. The 8000-kg rover has 30 kW of continuous power available via a laser transmitter located at the Earth-moon L1 libration point, about 50,000 km above the surface of the moon. This rover, which is designed to operate in either day or night conditions, has the flexibility to perform a variety of power-intensive missions. 24 refs.

  7. Beam-powered lunar rover design

    SciTech Connect (OSTI)

    Dagle, J.E.; Coomes, E.P.; Antoniak, Z.I.; Bamberger, J.A.; Bates, J.M.; Chiu, M.A.; Dodge, R.E.; Wise, J.A.

    1992-03-01T23:59:59.000Z

    Manned exploration of our nearest neighbors in the solar systems is the primary goal of the Space Exploration Initiative (SEI). An integral part of any manned lunar or planetary outpost will be a system for manned excursions over the surface of the planet. This report presents a preliminary design for a lunar rover capable of supporting four astronauts on long-duration excursions across the lunar landscape. The distinguishing feature of this rover design is that power is provided to rover via a laser beam from an independent orbiting power satellite. This system design provides very high power availability with minimal mass on the rover vehicle. With this abundance of power, and with a relatively small power-system mass contained in the rover, the vehicle can perform an impressive suite of mission-related activity. The rover might be used as the first outpost for the lunar surface (i.e., a mobile base). A mobile base has the advantage of providing extensive mission activities without the expense of establishing a fixed base. This concept has been referred to as ``Rove First.`` A manned over, powered through a laser beam, has been designed for travel on the lunar surface for round-trip distances in the range of 1000 km, although the actual distance traveled is not crucial since the propulsion system does not rely on energy storage. The life support system can support a 4-person crew for up to 30 days, and ample power is available for mission-related activities. The 8000-kg rover has 30 kW of continuous power available via a laser transmitter located at the Earth-moon L1 libration point, about 50,000 km above the surface of the moon. This rover, which is designed to operate in either day or night conditions, has the flexibility to perform a variety of power-intensive missions. 24 refs.

  8. ChemCam Rock Laser for the Mars Science Laboratory

    ScienceCinema (OSTI)

    LANL

    2009-09-01T23:59:59.000Z

    Los Alamos has a long history of space-related instr... Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components are concurrently being assembled at Los Alamos and in Toulouse, France, and will be delivered to JPL in July. The Mars Science Laboratory is scheduled to launch in 2009. Animations courtesy of JPL/NASA.

  9. nature geoscience | VOL 2 | APRIL 2009 | www.nature.com/naturegeoscience 1 Beyond water on Mars

    E-Print Network [OSTI]

    Grotzinger, John P.

    sulphates, phyllosilicates and opaline silica in some places47 ; the recognition of many local topographic-the-water' strategy. With the forthcoming rover Mars Science Laboratory, due to launch in 2011, this strategy organism metabolism possible, and a source of energy to fuel that organism metabolism -- in other words

  10. LANL Researcher Roger Wiens Discusses ChemCam

    ScienceCinema (OSTI)

    Wiens, Roger

    2014-08-12T23:59:59.000Z

    Discussion of the ChemCam instrument on the Curiosity Rover that occurred during the NASA press conference prior to launch of the Mars Science Laboratory. The ChemCam instrument was developed by Los Alamos National Laboratory and the French Space Institute. Los Alamos National Laboratory researcher Roger Wiens discusses the instrument on this video. ChemCam uses a laser to "zap" features of the Martian landscape and then uses a spectrometer to gather information about the composition of the sample. ChemCam will help the Curiosity Rover determine whether Mars is or was habitable. The Rover is expected to touch down on the Red Planet on August 5, 2012.

  11. National Aeronautics and Space Administration Lunar Electric Rover Concept

    E-Print Network [OSTI]

    testing concepts for a new generation of rovers at sites around the country. These lunar rover concepts winches, cable reels, backhoes, cranes and bulldozer blades to be attached for special missions packages. Functional Requirements: The LER must be able to hold a crew of two, but can support a crew

  12. Calibrating the ChemCam LIBS for carbonate minerals on Mars

    SciTech Connect (OSTI)

    Wiens, Roger C [Los Alamos National Laboratory; Clegg, Samuel M [Los Alamos National Laboratory; Ollila, Ann M [Los Alamos National Laboratory; Barefield, James E [Los Alamos National Laboratory; Lanza, Nina [Los Alamos National Laboratory; Newsom, Horton E [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The ChemCam instrument suite on board the NASA Mars Science Laboratory (MSL) rover includes the first LIBS instrument for extraterrestrial applications. Here we examine carbonate minerals in a simulated martian environment using the LIDS technique in order to better understand the in situ signature of these materials on Mars. Both chemical composition and rock type are determined using multivariate analysis (MVA) techniques. Composition is confirmed using scanning electron microscopy (SEM) techniques. Our initial results suggest that ChemCam can recognize and differentiate between carbonate materials on Mars.

  13. Learning to visually predict terrain properties for planetary rovers

    E-Print Network [OSTI]

    Brooks, Christopher Allen, 1978-

    2009-01-01T23:59:59.000Z

    For future planetary exploration missions, improvements in autonomous rover mobility have the potential to increase scientific data return by providing safe access to geologically interesting sites that lie in rugged ...

  14. Mars Background Information General Information

    E-Print Network [OSTI]

    Dennis, Robert G.

    be done for the windows on a pressurized rover, a modified windshield wiper could also be used. Atmosphere

  15. Learning Skills from Play: Artificial Curiosity on a Katana Robot Arm

    E-Print Network [OSTI]

    Schmidhuber, Juergen

    Learning Skills from Play: Artificial Curiosity on a Katana Robot Arm Hung Ngo, Matthew Luciw learning progress. We apply this concept to a physical system. Our Katana robot arm curiously plays. Here we apply principles of AC to a robot (a Katana robot arm), in an environment with a few

  16. Nuclear rocket performance based on Rover/NERVA technology

    SciTech Connect (OSTI)

    Kirk, W.L.

    1990-01-01T23:59:59.000Z

    It has been suggested that the 1955-1972 nuclear rocket development (Rover) program provides a strong foundation for a renewed nuclear engine development effort. It is concluded that there is an extensive development base deriving from the Rover/NERVA program for bead-loaded graphite-fueled reactors (Isp = 825-900 s), a moderate base for composite fuel (Isp = 875-925 s), and a modest base for carbide fuel (Isp = 975-1025 s). For carbide fuel and to some extent for composite fuel, there is a potential for considerable increase in reactor core and presumable engine lifetime with only modest reduction in Isp.

  17. The Planet Mars Mars is noticeable

    E-Print Network [OSTI]

    Walter, Frederick M.

    a mythos of Mars as a dying planet. The intelligent Martians built canals to collect the melting polar ice a telescope: Mars has white polar caps Mars has dark (greenish) and bright (red) features The features in Lowell crater Frosty morning in Utopia Planitia #12;Clouds Mist in Valles Marineris Ice clouds #12

  18. MARS IN A MINUTE: How Do You Land on Mars? How do you land on Mars?

    E-Print Network [OSTI]

    to land safely! Here are some options: 1. With a small- to mid-size rover, use a cushion of airbags along

  19. Characteristics of stand-off detection of geological samples at MARS atmospheric pressure using laser-induced breakdown spectroscopy (LIBS).

    SciTech Connect (OSTI)

    Cremers, D. A. (David A.); Arp, Z. A. (Zane A.); Knight, Andrew K.; Scherbarth, Nancy L.; Wiens, R. C. (Roger C.); Maurice, S. (Sylvestre)

    2003-01-01T23:59:59.000Z

    LIBS has been proposed as a new method for stand-off detection of geological samples for use on landers and rovers to Mars and studies are on-going to determine capabilities. Because of the severe size, weight, ruggedness and power requirements for space instrumentation and the need to maximize scientific return, it is important to benchmark capabilities with parameters representative of compact instrumentation likely to be used in a flight instrument. Some of these issues are addressed here.

  20. Measuring Nighttime Atmospheric Opacity Using Images From the Mars Exploration Rovers

    E-Print Network [OSTI]

    Bean, Keri M

    2012-07-11T23:59:59.000Z

    Atmospheric opacity, otherwise known as optical depth, is the measurement of the amount of radiation reaching the surface through the atmosphere. The spatial and temporal patterns in optical depth tell us about the aerosol and cloud cycles...

  1. Modeling the Radio Frequency Environment of Mars for Future Wireless, Networked Rovers and Sensor Webs

    E-Print Network [OSTI]

    De Leon, Phillip

    Webs Vishwanath Chukkala, Phillip De Leon, Stephen Horan, and Vijayakumar Velusamy New Mexico State University Klipsch School of Electrical and Computer Engineering Las Cruces, NM 88003 (505) 646 networks. Elements of the net- work have a short transmission range, low power require- ments, low cost

  2. AUTONOMOUS NAVIGATION TO PROVIDE LONG-DISTANCE SURFACE TRAVERSESFOR MARS ROVER SAMPLERETURN MISSION

    E-Print Network [OSTI]

    Nagy, George

    to the mission,fuel consumption, and vehicle stability. Thevehicle reaches a new vantagepoint with relatively included a television camera, a range fmder, and tactile whiskers. The Autonomous Land Vehicle built-foilowing. Cumnt interest in autonomous vehicle navigation is attested by the thirc)[-nine papers scheduled

  3. Quick Fix Gives Mars Rover's ChemCam Sharper Vision | Department of

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you wantJoin us for| Department ofRights ProtectingEnergy Quick Fix

  4. Quick Fix Gives Mars Rover's ChemCam Sharper Vision | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMay 2015 < prev

  5. NASA agreements advance Mars exploration, Los Alamos Rover instrument a key

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTIONES2008-54174MoreMuseum| Jefferson

  6. The Mars Hopper: a radioisotope powered, impulse driven, long-range, long-lived mobile platform for exploration of Mars

    SciTech Connect (OSTI)

    Steven D. Howe; Robert C. O'Brien; William Taitano; Doug Crawford; Nathan Jerred; Spencer Cooley; John Crapeau; Steve Hansen; Andrew Klein; James Werner

    2011-02-01T23:59:59.000Z

    Planetary exploration mission requirements are becoming more demanding. Due to the increasing cost, the missions that provide mobile platforms that can acquire data at multiple locations are becoming more attractive. Wheeled vehicles such as the MER rovers have proven extremely capable but have very limited range and cannot traverse rugged terrain. Flying vehicles such as balloons and airplanes have been proposed but are problematic due to the very thin atmospheric pressure and the strong, dusty winds present on Mars. The Center for Space Nuclear Research has designed an instrumented platform that can acquire detailed data at hundreds of locations during its lifetime - a Mars Hopper. The Mars Hopper concept utilizes energy from radioisotopic decay in a manner different from any existing radioisotopic power sourcesas a thermal capacitor. By accumulating the heat from radioisotopic decay for long periods, the power of the source can be dramatically increased for short periods. The platform will be able to "hop" from one location to the next every 5-7 days with a separation of 5-10 km per hop. Preliminary designs show a platform that weighs around 52 kgs unfueled which is the condition at deployment. Consequently, several platforms may be deployed on a single launch from Earth. With sufficient lifetime, the entire surface of Mars can be mapped in detail by a couple dozen platforms. In addition, Hoppers can collect samples from all over the planet, including gorges, mountains and crevasses, and deliver them to a central location for eventual pick-up by a Mars Sample Return mission. The status of the Mars Hopper development project at the CSNR is discussed.

  7. Neural Network Model for Path-Planning of Robotic Rover Systems

    E-Print Network [OSTI]

    Bassil, Youssef

    2012-01-01T23:59:59.000Z

    Today, robotics is an auspicious and fast-growing branch of technology that involves the manufacturing, design, and maintenance of robot machines that can operate in an autonomous fashion and can be used in a wide variety of applications including space exploration, weaponry, household, and transportation. More particularly, in space applications, a common type of robots has been of widespread use in the recent years. It is called planetary rover which is a robot vehicle that moves across the surface of a planet and conducts detailed geological studies pertaining to the properties of the landing cosmic environment. However, rovers are always impeded by obstacles along the traveling path which can destabilize the rover's body and prevent it from reaching its goal destination. This paper proposes an ANN model that allows rover systems to carry out autonomous path-planning to successfully navigate through challenging planetary terrains and follow their goal location while avoiding dangerous obstacles. The propos...

  8. Nuclear rockets: High-performance propulsion for Mars

    SciTech Connect (OSTI)

    Watson, C.W.

    1994-05-01T23:59:59.000Z

    A new impetus to manned Mars exploration was introduced by President Bush in his Space Exploration Initiative. This has led, in turn, to a renewed interest in high-thrust nuclear thermal rocket propulsion (NTP). The purpose of this report is to give a brief tutorial introduction to NTP and provide a basic understanding of some of the technical issues in the realization of an operational NTP engine. Fundamental physical principles are outlined from which a variety of qualitative advantages of NTP over chemical propulsion systems derive, and quantitative performance comparisons are presented for illustrative Mars missions. Key technologies are described for a representative solid-core heat-exchanger class of engine, based on the extensive development work in the Rover and NERVA nuclear rocket programs (1955 to 1973). The most driving technology, fuel development, is discussed in some detail for these systems. Essential highlights are presented for the 19 full-scale reactor and engine tests performed in these programs. On the basis of these tests, the practicality of graphite-based nuclear rocket engines was established. Finally, several higher-performance advanced concepts are discussed. These have received considerable attention, but have not, as yet, developed enough credibility to receive large-scale development.

  9. Mars Program Independent Assessment Team

    E-Print Network [OSTI]

    Leveson, Nancy

    Climate Orbiter (MCO) was launched in late 1998, followed by Mars Polar Lander (MPL) and Deep Space 2 launched in early 1999. MCO failed to achieve Mars orbit because of a navigation error, resulting of the Mars Climate Orbiter Mission," dated November 11, 1999, and the "MCO Mishap Investigation Board Phase I

  10. Spatial Coverage Planning and Optimization for a Planetory Exploration Rover Daniel M. Gaines and Tara Estlin and Caroline Chouinard

    E-Print Network [OSTI]

    Schaffer, Steven

    . For example, if the rover receives more solar array input than expected, it may have energy to preform more approach makes use of a priori information, if available, and allows scientists to mark sub and resource (e.g. energy, onboard memory) constraints of the rover. The engineering team spends the rest

  11. IEEE ICRA2004 -Final Paper, April 26-May 1. 2004, New Orleans, LA, USA Mobility Performance Evaluation of Planetary Rover

    E-Print Network [OSTI]

    Kuroda, Yoji

    of gravitational acceleration to design the rover properly, we introduce similarity law to design and construct-gravity flight experiment in various parameters using the model on the airplane. Assuming that similarity law to successfully move better than 4WD. Keywords - Planetary Rover, Similarity law, Experimental models

  12. Lunar Rover Solar Panel MountTeam Members: Tian Le, Tudor Boiangiu, Jeremy Chan, James Haensel To develop a mechanized mount for a solar panel to

    E-Print Network [OSTI]

    Lunar Rover Solar Panel MountTeam Members: Tian Le, Tudor Boiangiu, Jeremy Chan, James Haensel To develop a mechanized mount for a solar panel to be mounted on a lunar rover. Must be: · capable of orienting panel towards sun · reside on mast extending vertically from rover · capable of unfurling solar

  13. Mars Before the Space Age

    E-Print Network [OSTI]

    Barrie W Jones

    2009-01-14T23:59:59.000Z

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes Kepler to obtain his first two laws of planetary motion. In the 17th century the first telescope observations were made, but very little surface detail could be discerned. Throughout the 18th and 19th centuries telescopes improved, revealing many dark areas on the red tinted surface. After the close opposition of 1877 Giovanni Schiaparelli announced about 40 canali on Mars. This led to the saga of the canals of Mars, laid to rest in 1971 when Mariner 9 made observations from Martian orbit showing that the canali/canals of Mars do not exist. Belief that there was life on Mars was widespread in the 19th century, including the view that the dark areas were some form of plant life. This view persisted until Mariner 4 flew past Mars in 1965 and discovered a far thinner atmosphere than previously thought, with impact craters dominating the images. It was Mariner 9 that revealed much more promising landscapes. Thus, the contemporary era of Mars exploration began. Our picture of Mars today is not only much more complete that that before Mariner 4, in several ways it is quite different. The belief however, that there may be life on Mars persists - subsurface life cannot be ruled out and, failing that, there might be ancient fossils on Mars.

  14. 19. Names have been assigned to geographic features by the Mars Exploration Rover (MER) team for planning

    E-Print Network [OSTI]

    Bell III, James F.

    . Squyres et al., Science 306, 1709 (2004). 29. P. W. Choquette, L. C. Pray, Am. Assoc. Petrol. Geol. Bull, Providence, RI, 1984). 32. J. B. Southard, J. A. Boguchwal, J. Sed. Petrol. 66, 680 (1990). 33. A. Banin, B

  15. DataRover: A Taxonomy Based Crawler for Automated Data Extraction from Data-Intensive Websites

    E-Print Network [OSTI]

    Davulcu, Hasan

    DataRover: A Taxonomy Based Crawler for Automated Data Extraction from Data-Intensive Websites H created a trend that brought thousands of catalogs online. Most of these websites are "taxonomy-directed". A Web site is said to be ``taxonomy- directed'' if it contains at least one taxonomy for organizing its

  16. By moving the front wheels in and back wheels out, the rover can

    E-Print Network [OSTI]

    Withers, Paul

    . Solar arrays Provide power for driving the rover, operating the science instruments, heating. The images provided the sci- entists with their first glimpse of their home away from home -- an area they will study for months. Scientists are thrilled with what they have seen. "Home sweet home," says Steve

  17. A Tale of 2 Missions (And Hopefully 2 Different Landings)

    SciTech Connect (OSTI)

    Wiens, Roger C. [Los Alamos National Laboratory

    2012-07-19T23:59:59.000Z

    This talk, to be given at the LANL IGPP Annual Review dinner in Santa Fe, NM on July 17, 2012, highlights two important NASA missions LANL played a key role in: The Genesis mission was the first to return to Earth from beyond the Moon, bearing solar particles to help understand the composition of the Sun; and Curiosity, a 1-ton Mars rover launched to the red planet in 2011 with a suite of instruments from LANL called ChemCam.

  18. MAR Background Report MAR Background Report: Indigenous Protest in Brazil

    E-Print Network [OSTI]

    Milchberg, Howard

    MAR Background Report MAR Background Report: Indigenous Protest in Brazil Hundreds of indigenous people demonstrated at the National Congress in Brasilia, capital of Brazil, following the announcement in the 1990s in the midst of extensive protests in Brazil and around the world. On February 8, an indigenous

  19. ..but goals must balance curiosity : Research Fortnight : Mar 5 In the wake of the U-turn last week that gives UK astronomers continued access to the Gemini

    E-Print Network [OSTI]

    Crowther, Paul

    growing pressure for publicly funded basic research to have a more immediate economic return. Ca this [see RF 20/2/08 p5 and p16-19 via link below]. It is time to put the economic impact of basic research in the UK's research base is a good use of taxpayers' money, as the Campaign for Science and Engineering has

  20. SearchHome Video News Images Health Education Topics Blogs Mobile Space Science Technology Health General Sci-Fi & Gaming Oddities International Business Education Mars Science Laboratory Curiosity

    E-Print Network [OSTI]

    Nieh, James

    SearchHome Video News Images Health Education Topics Blogs Mobile Space Science Technology Health the Video: Stingless Bees Fight Over Food Source ] April Flowers for redOrbit.com Your Universe Online Dancing Bees Show Researchers The Way To The Best Environmental Schemes UK Honeybees Threatened

  1. Characterization of side-slip dynamics in Land Rover LR3 for improved high speed autonomous control

    E-Print Network [OSTI]

    Truax, Robert D. (Robert Denison)

    2008-01-01T23:59:59.000Z

    In this thesis, the side slip control dynamics of the Land Rover LR3 platform are examined for autonomous control. As autonomy becomes implemented in high speed safety applications, the importance of an accurate model for ...

  2. MARS15 overview

    SciTech Connect (OSTI)

    Mokhov, N.V.; Striganov, S.I.; /Fermilab

    2007-01-01T23:59:59.000Z

    MARS15 is a Monte Carlo code for inclusive and exclusive simulation of three-dimensional hadronic and electromagnetic cascades, muon, heavy-ion, and low-energy neutron transport in accelerator, detector, spacecraft, and shielding components in the energy range from a fraction of an electronvolt up to 100 TeV. Main features of the code are described in this paper with a focus on recent developments and benchmarking. Newest developments concern inclusive and exclusive nuclear event generators, extended particle list in both modes, heavy-ion capability, electromagnetic interactions, enhanced geometry, tracking, histogramming and residual dose modules, improved graphical-user interface, and other external interfaces.

  3. Prospecting for lunar ice using a multi-rover cooperative team

    SciTech Connect (OSTI)

    KLARER,PAUL R.; FEDDEMA,JOHN T.; LEWIS,CHRISTOPHER L.

    2000-02-11T23:59:59.000Z

    A multi-rover cooperative team or swarm developed by Sandia National Laboratories is described, including various control methodologies that have been implemented to date. How the swarm's capabilities could be applied to a lunar ice prospecting mission is briefly explored. Some of the specific major engineering issues that must be addressed to successfully implement the swarm approach to a lunar surface mission are outlined, and potential solutions are proposed.

  4. Mars Before the Space Age

    E-Print Network [OSTI]

    Jones, Barrie W

    2008-01-01T23:59:59.000Z

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes Kepler to obtain his first two laws of planetary motion. In the 17th century the first telescope observations were made, but very little surface detail could be discerned. Throughout the 18th and 19th centuries telescopes improved, revealing many dark areas on the red tinted surface. After the close opposition of 1877 Giovanni Schiaparelli announced about 40 canali on Mars. This led to the saga of the canals of Mars, laid to rest in 1971 when Mariner 9 made observations from Martian orbit showing that the canali/canals of Mars do not exist. Belief that there was life on Mars was widespread in the 19th century, including the view that the dark areas were some form of plant life. This view persisted until Mariner 4 flew past Mars in 1965 and discovered a far thinner atmosphere than previously thought, with impact craters dominating the images. It ...

  5. Nuclear Risk Assessment for the Mars 2020 Mission Environmental Impact Statement

    SciTech Connect (OSTI)

    None

    2014-01-01T23:59:59.000Z

    In the summer of 2020, the National Aeronautics and Space Administration (NASA) plans to launch a spacecraft as part of the Mars 2020 mission. One option for the rover on the proposed spacecraft uses a Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) to provide continuous electrical and thermal power for the mission. An alternative option being considered is a set of solar panels for electrical power with up to 80 Light-Weight Radioisotope Heater Units (LWRHUs) for local component heating. Both the MMRTG and the LWRHUs use radioactive plutonium dioxide. NASA is preparing an Environmental Impact Statement (EIS) in accordance with the National Environmental Policy Act. The EIS will include information on the risks of mission accidents to the general public and on-site workers at the launch complex. This Nuclear Risk Assessment (NRA) addresses the responses of the MMRTG or LWRHU options to potential accident and abort conditions during the launch opportunity for the Mars 2020 mission and the associated consequences. This information provides the technical basis for the radiological risks of both options for the EIS.

  6. Integration and Utilization of Nuclear Systems on the Moon and Mars

    SciTech Connect (OSTI)

    Houts, Michael G.; Schmidt, George R.; Bragg-Sitton, Shannon; Hickman, Robert; Hissam, Andy; Houston, Vance; Martin, Jim; Mireles, Omar; Poston, David; Reid, Bob; Schneider, Todd; Stewart, Eric; Turpin, Jason; Van Dyke, Melissa; Vaughn, Jason; Wagner, David [NASA Marshall Space Flight Center, Nuclear Systems Office (NP50) Huntsville, AL 35812 (United States)

    2006-01-20T23:59:59.000Z

    Over the past five decades numerous studies have identified nuclear energy as an enhancing or enabling technology for planetary surface exploration missions. This includes both radioisotope and fission sources for providing both heat and electricity. Nuclear energy sources were used to provide electricity on Apollo missions 12, 14, 15, 16, and 17, and on the Mars Viking landers. Very small nuclear energy sources were used to provide heat on the Mars Pathfinder, Spirit, and Opportunity rovers. Research has been performed at NASA MSFC to help assess potential issues associated with surface nuclear energy sources, and to generate data that could be useful to a future program. Research areas include System Integration, use of Regolith as Radiation Shielding, Waste Heat Rejection, Surface Environmental Effects on the Integrated System, Thermal Simulators, Surface System Integration / Interface / Interaction Testing, End-to-End Breadboard Development, Advanced Materials Development, Surface Energy Source Coolants, and Planetary Surface System Thermal Management and Control. This paper provides a status update on several of these research areas.

  7. Mars Surveyor Program '01 Mars Environmental Compatibility Assessment wet chemistry lab

    E-Print Network [OSTI]

    Kounaves, Samuel P.

    Mars Surveyor Program '01 Mars Environmental Compatibility Assessment wet chemistry lab: A sensor] The Mars Environmental Compatibility Assessment (MECA) instrument was designed, built, and flight qualified as the potential habitability of its regolith. INDEX TERMS: 6225 Planetology: Solar System Objects: Mars; 6297

  8. Thursday, March 26, 2009 MARS: AQUEOUS PROCESSES

    E-Print Network [OSTI]

    Rathbun, Julie A.

    in Eastern Libya Montes, Mars: Implications for Long-Term Fluvial Activity [#1604] The Noachian highlands of Libya Montes represent one of the oldest regions on Mars that have been degraded by intensive, long

  9. The Red Planet Mars is noticeable

    E-Print Network [OSTI]

    Walter, Frederick M.

    the melting polar ice, and to distribute the water among the oases #12;Camille Flammarion (1884) #12;Chesley Viewed through a telescope: Mars has white polar caps Mars has dark (greenish) and bright (red;Northern Polar Cap in Spring #12;The Facts of Mars mass = 0.11M radius = 0.53 R density = 3.9 gm/cm3

  10. Mars atmosphere modelling and observations workshop

    E-Print Network [OSTI]

    Forget, Franois

    /TES (W. C. Maguire et al.): 10' Mars surface boundary layer meteorology (S. E. Larsen, H. E. Jrgensen. Lewis et al.) 10' Assimilation of TES data from the Mars Global Surveyor scientific mapping phase. (L : Breeding vectors and predictability in the Oxford Mars GCM (C. E. Newman, P. L. Read and S. R. Lewis) 3

  11. Abstract--This paper presents the Axel robotic rover which has been designed to provide robust and flexible access to

    E-Print Network [OSTI]

    Abstract--This paper presents the Axel robotic rover which has been designed to provide robust, is with the California Institute of Technology, Pasadena, CA 91125 USA (phone: 626-395-4139; e-mail: jwb@robotics scientific targets. A new generation of planetary exploration robots is needed to access the challenging

  12. Solar discrepancies : Mars exploration and the curious problem of inter-planetary time

    E-Print Network [OSTI]

    Mirmalek, Zara Lenora

    2008-01-01T23:59:59.000Z

    atmosphere, the parachute and airbag drop of the landercocoon packed inside the airbag unfolded, and the rover

  13. Support UCP today and make a difference in the lives of people

    E-Print Network [OSTI]

    's Airbag Makes NASA's Mars Experts See Red An Interview With Mars Rover Scientist Nathalie Cabrol It

  14. The Phoenix Mars Lander is the first project in NASA's openly competed program of Mars Scout

    E-Print Network [OSTI]

    , rather than making an airbag-cushioned landing like those of the Mars Pathfinder and the Mars Exploration of payload weight to total weight than airbags do. The Phoenix team has extensively examined the landing

  15. BEAMS: Curiosity | Jefferson Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternativeOperationalAugust Nazim Ali Bharmal, Comparisons4-3

  16. Nuclear technologies for Moon and Mars exploration

    SciTech Connect (OSTI)

    Buden, D.

    1991-01-01T23:59:59.000Z

    Nuclear technologies are essential to successful Moon and Mars exploration and settlements. Applications can take the form of nuclear propulsion for transport of crews and cargo to Mars and the Moon; surface power for habitats and base power; power for human spacecraft to Mars; shielding and life science understanding for protection against natural solar and cosmic radiations; radioisotopes for sterilization, medicine, testing, and power; and resources for the benefits of Earth. 5 refs., 9 figs., 3 tabs.

  17. THE MARS ENVIRONMENTAL COMPATIBILITY ASSESSMENT (MECA) WET CHEMISTRY EXPERIMENT ON THE MARS '01 LANDER

    E-Print Network [OSTI]

    Kounaves, Samuel P.

    THE MARS ENVIRONMENTAL COMPATIBILITY ASSESSMENT (MECA) WET CHEMISTRY EXPERIMENT ON THE MARS '01, Morgantown, WV, 26507 Introduction. The Mars Environmental Compatibility Assessment (MECA) is an instrument of acquiring information relevant to HEDS, the WCL will assess the chemical composition and properties

  18. 2011 MARS Refresher Presentation (2 of 3)

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    Information sessions that shall outline the general principles of the 2011 annual Merit, Appraisal and Recognition Scheme (MARS). Presentation will be given in English.

  19. 2010 MARS Refresher Presentation (3 of 3)

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    Information sessions that shall outline the general principles of the 2010 annual Merit, Appraisal and Recognition Scheme (MARS). Presentation will be given in English.

  20. acidalia planitia mars: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  1. analysis code mars: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  2. arabia region mars: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  3. arabia terra mars: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  4. ares mars scout: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  5. arctic mars analog: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  6. Mars Climate Orbiter Mishap Investigation Board

    E-Print Network [OSTI]

    Leveson, Nancy

    ) 3 List of Consultants 4 Acknowledgements 5 Executive Summary 6 1. Mars Climate Orbiter (MCO) and Mars Polar Lander (MPL) Project Descriptions 9 2. MCO Mishap 13 3. Method of Investigation 15 4. MCO Root Causes and MPL Recommendations 16 5. MCO Contributing Causes and Observations and MPL

  7. MArCh 2008 46 Introduction

    E-Print Network [OSTI]

    Feng, Xizhou

    Systems #12;MArCh 2008 47 4 US-Canada Power System Outage Task Force. Final Report on the August 14, 2003MArCh 2008 46 Introduction This article describes our ongoing efforts to develop a global modeling-resolution scalable models of complex socio-technical systems;i. Service-oriented architecture and delivery mechanism

  8. The Global Topography of Mars and Implications for Surface

    E-Print Network [OSTI]

    Hauck II, Steven A.

    The Global Topography of Mars and Implications for Surface Evolution David E. Smith,1 * Maria T the mar- tian surface. Before the MGS mission, models of mar- tian topography were derived from Earth- accuracy global map of the topography of Mars. Dominant features include the low northern hemisphere

  9. Nomad rover field experiment, Atacama desert, Chile 2. Identification of paleolife evidence using a robotic vehicle: Lessons and recommendations for a Mars sample return mission

    E-Print Network [OSTI]

    Cabrol, N.A.; Bettis III, E.A.; Glenister, B.; Chong, G.; Herrera, C.; Jensen, A.; Pereira, M; Stoker, R.; Grin, E.A.; Landheim, R.; Thomas, G.; Golden, J.; Saville, K.; Ludvigson, Gregory A.; Witzke, B.

    2001-04-25T23:59:59.000Z

    -stratified 15 to 20 m-thick red sandstone layers overlaid by friable conglomeratic sediments, and a wide range of lithologies that included fluidal tuffs, volcanic rocks, silicified acidic intrusion, tonalites, and rhyolites (G. Chong, unpublished post test...

  10. 02/02 NASA JSC Astrobiology: Fingerprints of Life Searching for Life: Mars Critters 1 Mars Critters

    E-Print Network [OSTI]

    Waliser, Duane E.

    to handle the constant radiation on the surface of Mars. Also the dominant gas in the Mars atmosphere Destination: Mars. In groups or as individuals, students will use their knowledge of Mars and living organisms up various art supplies at each table for either individual work or small group work. This activity

  11. Solar discrepancies : Mars exploration and the curious problem of inter-planetary time

    E-Print Network [OSTI]

    Mirmalek, Zara Lenora

    2008-01-01T23:59:59.000Z

    Monterey, California. Solar Discrepancies: Mars explorationCALIFORNIA, SAN DIEGO Solar discrepancies: Mars explorationOF THE DISSERTATION Solar discrepancies: Mars exploration

  12. Adaptive control for Mars atmospheric flight

    E-Print Network [OSTI]

    Restrepo, Carolina Isabel

    2009-05-15T23:59:59.000Z

    landing accuracy requirements for a manned space vehicle make it necessary to ?y a controlled entry trajectory rather than a more robust ballistic entry trajectory used for some robotic missions. The large variations in Mars atmospheric properties make a...

  13. Microbial iron reduction on Earth and Mars

    E-Print Network [OSTI]

    Nixon, Sophie Louise

    2014-11-27T23:59:59.000Z

    The search for life beyond Earth is the driving force behind several future missions to Mars. An essential task in the lead-up to these missions is a critical assessment of the habitability for, and feasibility of, life. ...

  14. The surface of Mars : morphology and process

    E-Print Network [OSTI]

    Aharonson, Oded, 1973-

    2002-01-01T23:59:59.000Z

    The goal of this work is a quantitative description of the morphology of the surface of Mars, in order to constrain the nature of processes acting during the ancient past through today. Emphasis is placed on linking geometric ...

  15. Monday, March 12, 2007 MARS VOLCANISM

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Monday, March 12, 2007 MARS VOLCANISM 2:30 p.m. Crystal Ballroom B Chairs: J. E. Bleacher M. H to the northeast. 2:45 p.m. Baloga S. M. * Glaze L. S. Time-Dependent Levee Growth for Mars Lava Flows [#1276, for very cold climate, sulfur dioxide glaciers and liquid sulfur dioxide runoff. 4:00 p.m. Johnson S. S

  16. 1. Get in touch if you have any ?'s about the industry or life after Penn! And to satiate what I'm sure is burning curiosity... I took the bus.4:22 PM Feb 17th via web

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    'm sure is burning curiosity... I took the bus.4:22 PM Feb 17th via web 2. Well guys, that's it for my day!! Off to see what the post fashion week new york night has to offer...4:18 PM Feb 17th via web 3 to come in for the month.4:06 PM Feb 17th via web 4. Well, it's getting quiet around here now that shows

  17. Enhanced ExoMars Mission UK Industrial Day

    E-Print Network [OSTI]

    2008 slide 6 ExoMars Procurements Procurement generally according to "Best Practices". Some exceptions of Vented Airbags proving a critical enabling technology for ExoMars Manufacturing of breadboards for drill

  18. Erfahrungsbericht Landschaftskologie (Ciencias del mar/ciencias ambientales)

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    Erfahrungsbericht Landschaftsökologie (Ciencias del mar/ciencias ambientales) in Cádiz (Spanien) WS

  19. MARS CLIMATE DATABASE v5.1 USER MANUAL

    E-Print Network [OSTI]

    Spiga, Aymeric

    MARS CLIMATE DATABASE v5.1 USER MANUAL (ESTEC Contract 11369/95/NL/JG "Mars Climate Database for version 5.1 of the Mars Climate Database (MCD) de- veloped by LMD (Paris), AOPP (Oxford), Dept. Physics and the Centre National d'Etudes Spatiales. This is a database of atmospheric statistics compiled from Global Cli

  20. PHYS 178 2008 Week 4, Part 2 Lowell's Mars Globe

    E-Print Network [OSTI]

    Wardle, Mark

    Marineris, an immense rift valley the length of the continental United States. Near the center of the disk;4 Mars - Happy Face Crater The story of the Mars Orbiter Camera (MOC) onboard the Mars Global Surveyor finally been placed in the desired mapping orbit. The MOC team's happiness is perhaps best expressed

  1. Photochemical Escape of Oxygen from Early Mars

    E-Print Network [OSTI]

    Zhao, Jinjin

    2015-01-01T23:59:59.000Z

    Photochemical escape is an important process for oxygen escape from present Mars. In this work, a 1-D Monte-Carlo Model is developed to calculate escape rates of energetic oxygen atoms produced from O2+ dissociative recombination reactions (DR) under 1, 3, 10, and 20 times present solar XUV fluxes. We found that although the overall DR rates increase with solar XUV flux almost linearly, oxygen escape rate increases from 1 to 10 times present solar XUV conditions but decreases when increasing solar XUV flux further. Analysis shows that atomic species in the upper thermosphere of early Mars increases more rapidly than O2+ when increasing XUV fluxes. While the latter is the source of energetic O atoms, the former increases the collision probability and thus decreases the escape probability of energetic O. Our results suggest that photochemical escape be a less important escape mechanism than previously thought for the loss of water and/or CO2 from early Mars.

  2. Mars Mission Analysis Trades Based on Legacy and Future Nuclear Propulsion Options

    SciTech Connect (OSTI)

    Joyner, Russell [Pratt and Whitney Rocketdyne, West Palm Beach, Florida (United States); Lentati, Andrea [Georgia Institute of Technology, Atlanta, Georgia (United States); Cichon, Jaclyn [University of Florida, Gainesville, Florida (United States)

    2007-01-30T23:59:59.000Z

    The purpose of this paper is to discuss the results of mission-based system trades when using a nuclear thermal propulsion (NTP) system for Solar System exploration. The results are based on comparing reactor designs that use a ceramic-metallic (CERMET), graphite matrix, graphite composite matrix, or carbide matrix fuel element designs. The composite graphite matrix and CERMET designs have been examined for providing power as well as propulsion. Approaches to the design of the NTP to be discussed will include an examination of graphite, composite, carbide, and CERMET core designs and the attributes of each in regards to performance and power generation capability. The focus is on NTP approaches based on tested fuel materials within a prismatic fuel form per the Argonne National Laboratory testing and the ROVER/NERVA program. NTP concepts have been examined for several years at Pratt and Whitney Rocketdyne for use as the primary propulsion for human missions beyond earth. Recently, an approach was taken to examine the design trades between specific NTP concepts; NERVA-based (UC)C-Graphite, (UC,ZrC)C-Composite, (U,Zr)C-Solid Carbide and UO2-W CERMET. Using Pratt and Whitney Rocketdyne's multidisciplinary design analysis capability, a detailed mission and vehicle model has been used to examine how several of these NTP designs impact a human Mars mission. Trends for the propulsion system mass as a function of power level (i.e. thrust size) for the graphite-carbide and CERMET designs were established and correlated against data created over the past forty years. These were used for the mission trade study. The resulting mission trades presented in this paper used a comprehensive modeling approach that captures the mission, vehicle subsystems, and NTP sizing.

  3. Making a Splash on Mars Excerpts from Science News, "Making a Splash on Mars," June 29, 2000

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    a large ocean if melted. "We have conditions on Mars that seem to forbid liquid water very close the principles of high-altitude cooking to an extreme. Although any liquid water exposed to Mars' low creates a thin layer of liquid water that lubricates the blade and makes gliding possible. On Mars

  4. tel-00678050,version1-12Mar2012 tel-00678050,version1-12Mar2012

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    The present thesis work is about haptic perception of raised-line pictures by blind and sighted subjects-12Mar2012 #12;3 Haptic perception of raised-line pictures by blind and sighted people Abstract

  5. Ground-based verification and data processing of Yutu rover Active Particle-induced X-ray Spectrometer

    E-Print Network [OSTI]

    Guo, Dongya; Peng, Wenxi; Cui, Xingzhu; Zhang, Chengmo; Liu, Yaqing; Liang, Xiaohua; Dong, Yifan; Wang, Jinzhou; Gao, Min; Yang, Jiawei; Zhang, Jiayu; Li, Chunlai; Zou, Yongliao; Zhang, Guangliang; Zhang, Liyan; Fu, Xiaohui

    2015-01-01T23:59:59.000Z

    The Active Particle-induced X-ray Spectrometer (APXS) is one of the payloads on board the Yutu rover of Chang'E-3 mission. In order to assess the instrumental performance of APXS, a ground verification test was done for two unknown samples (basaltic rock, mixed powder sample). In this paper, the details of the experiment configurations and data analysis method are presented. The results show that the elemental abundance of major elements can be well determined by the APXS with relative deviations < 15 wt. % (detection distance = 30 mm, acquisition time = 30 min). The derived detection limit of each major element is inversely proportional to acquisition time and directly proportional to detection distance, suggesting that the appropriate distance should be < 50mm.

  6. Autonomy for Aurora's Mars Missions Mark Woods,

    E-Print Network [OSTI]

    Fisher, Michael

    Autonomy for Aurora's Mars Missions Mark Woods, SciSys Ltd., Clothier Road, Bristol, UK BS4 5SS Email: mark.woods@scisys.co.uk Tel: +44 117 9717251 ESA's Aurora programme incorporates a strategy for European involvement in future robotic and human exploration of our Solar System. The Aurora roadmap calls

  7. Risk Management, Mar 2012 Risk Management

    E-Print Network [OSTI]

    Risk Management, Mar 2012 Risk Management Conditions of Volunteer Service (Please send completed form to the Office of Risk Management) riskmanagement@uoregon.edu Fax: 541-346-7008 As a volunteer Tort Claims Act, ORS 30.260-300, and Oregon Department of Administrative Services Risk Management

  8. Orbitally Driven Climate Change on Mars

    E-Print Network [OSTI]

    Schrghofer, Norbert

    Tropical Mountain Glacier exchange Polar Cap + Polar Layered Deposits Ice-Rich Permafrost white line;ice-free surface Phoenix on Mars MayNovember 2008 latitude: 68N ice buried by 5cm #12;1 "sol" = 1 solar day never warm enough for melting #12;Phoenix Self Portrait mosaic of 100 stereo surface im- ager

  9. Materials characterization activities for %E2%80%9CTake Our Sons&Daughters to Work Day%E2%80%9D 2013.

    SciTech Connect (OSTI)

    Mowry, Curtis Dale; Pimentel, Adam S.; Sparks, Elizabeth Schares; Hanlon, Brittany Paula

    2013-09-01T23:59:59.000Z

    We created interactive demonstration activities for Take Our Daughters&Sons to Work Day (TODSTWD) 2013 in order to promote general interest in chemistry and also generate awareness of the type of work our laboratories can perform. %E2%80%9CCurious about Mars Rover Curiosity?%E2%80%9D performed an elemental analysis on rocks brought to our lab using the same technique utilized on the planet Mars by the NASA robotic explorer Curiosity. %E2%80%9CFood is Chemistry?%E2%80%9D utilized a mass spectrometer to measure, in seconds, each participant's breath in order to identify the food item consumed for the activity. A total of over 130 children participated in these activities over a 3 hour block, and feedback was positive. This document reports the materials (including handouts), experimental procedures, and lessons learned so that future demonstrations can benefit from the baseline work performed. We also present example results used to prepare the Food activity and example results collected during the Curiosity demo.

  10. By kIMM FESEnMAIER 13Su m m E r 2012 ENGINEERING & SCIENCE

    E-Print Network [OSTI]

    launched Mars exploration rovers (Mers) spirit and opportunity, so an air-bag bounce landing like theirs

  11. Visit the Museum

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in interactive exhibits showcasing current LANL projects such as nanotechnology, algae biofuels, environmental monitoring, supercomputing, the Mars Science Laboratory rover,...

  12. Report on the Loss of the Mars Polar Lander and

    E-Print Network [OSTI]

    Leveson, Nancy

    ........................................................................................... 1 1.2.1 Investigation of the MCO Loss .................................................................................................................. 1 1.2.2 Post-MCO Corrective Actions for Mars Polar Lander

  13. Mars in this century: The Olympia Project

    SciTech Connect (OSTI)

    Hyde, R.A.; Ishikawa, M.Y.; Wood, L.L.

    1988-01-01T23:59:59.000Z

    Manned exploration of the inner solar system --- typified by a manned expedition to Mars --- this side of the indefinite future involves fitting a technical peg into the political hole. If Apollo-level resources are assumed unavailable for such exploratory programs, then non-Apollo means and methods must be employed, involving greater technical and human risks, or else such exploration must be deferred indefinitely. Sketched here is an example of such a relatively high-risk alternative, one which could land men on Mars in the next decade, and return them to earth. Two of its key features are a teleoperated rocket fuel-generating facility on the lunar surface and an interplanetary mission-staging space station at L{sub 4}, which would serve to enable a continuing solar system exploratory program, with annual mission commencements to points as distant as the Jovian moons. The estimated cost-to-execute this infrastructure-building manned Mars mission is $3 billion, with follow-on missions estimated to cost no more than $1 billion each. 3 figs., 2 tabs.

  14. Nuclear propulsion system options for Mars missions

    SciTech Connect (OSTI)

    Emrich, W.J. Jr.; Young, A.C. (NASA, Marshall Space Flight Center, Huntsville, AL (United States))

    1992-03-01T23:59:59.000Z

    This paper focuses on the use of a nuclear thermal rocket to accomplish a variety of space missions with emphasis on the manned Mars mission. The particle-bed-reactor type nuclear engine was chosen as the baseline engine because of its perceived versatility over other nuclear propulsion systems in conducting a wide variety of tasks. This study indicates that the particle-bed-reactor engine with its high engine thrust-to-weight ratio (about 20) and high specific impulse (about 950 to 1050 sec) offers distinct advantages over the larger and heavier NERVA-type nuclear engines.

  15. Mars mission laser tool heads to JPL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your Home and It'llMappingMariaHereldMars mission laser tool

  16. Remote Terrestrial Sites as Operational/Logistics Analogs for Moon/Mars Bases: the Haughton Mars Project

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Remote Terrestrial Sites as Operational/Logistics Analogs for Moon/Mars Bases: the Haughton Mars coordinating the logistics and resupply of far-flung planetary bases. A number of logistics methods have been terrestrial logistics methods were tested in the context of (analog) planetary exploration. A comprehensive

  17. Chaos, storms and climate on Mars

    E-Print Network [OSTI]

    Kite, Edwin S; Michaels, Timothy; Dietrich, William E; Manga, Michael

    2011-01-01T23:59:59.000Z

    Channel networks on the plateau adjacent to Juventae Chasma have the highest drainage densities reported on Mars.We model frozen precipitation on the Juventae plateau,finding that the trigger for forming these channel networks could have been ephemeral lakeshore precipitation,and that they do not require past temperatures higher than today.If short-lived and localized events explain some dendritic channel networks on Mars, this would weaken the link between dendritic valley networks and surface climate conditions that could sustain life. Our analysis uses MRAMS simulations and HiRISE DTMs.We model localized weather systems driven by water vapor release from ephemeral lakes during outflow channel formation.At Juventae Chasma,mean snowfall reaches a maximum of 0.9mm/hr water equivalent on the SW rim of the chasm.Radiative effects of the thick cloud cover raise maximum (minimum, mean) plateau surface temperatures by up to 24K(9K, 17K)locally.The key result is that the area of maximum modeled precipitation shows ...

  18. Conference

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    data abundant at Planetary Conference March 15, 2013 Laser instrument aboard Curiosity rover provides well over 40,000 shots so far LOS ALAMOS, N. M., March 15, 2013-Members of the...

  19. Formation of lobate debris aprons on Mars: Assessment of regional ice sheet collapse and debris-cover armoring

    E-Print Network [OSTI]

    Marchant, David R.

    not have attained temperatures near or above the ice melting point and retained their current shape, a findFormation of lobate debris aprons on Mars: Assessment of regional ice sheet collapse and debris Keywords: Mars, climate Mars, surface Mars, polar geology Mars, polar caps a b s t r a c t Lobate debris

  20. Radiobiological modelling with MarCell software

    SciTech Connect (OSTI)

    Hasan, J.S.; Jones, T.D.

    1996-10-01T23:59:59.000Z

    Jones introduced a bone marrow radiation cell kinetics model with great potential for application in the fields of health physics, radiation research, and medicine. However, until recently, only the model developers have been able to apply it because of the complex array of biological and physical assignments needed for evaluation of a particular radiation exposure protocol. The purpose of this article is to illustrate the use of MarCell (MARrow CELL Kinetics) software for MS-DOS, a user-friendly computer implementation of that mathematical model that allows almost anyone with an elementary knowledge of radiation physics and/or medical procedures to apply the model. A hands-on demonstration of the software will be given by guiding the user through evaluation of a medical total body irradiation protocol and a nuclear fallout scenario. A brief overview of the software is given in the Appendix.

  1. Nuclear power systems for Lunar and Mars exploration

    SciTech Connect (OSTI)

    Sovie, R.J.; Bozek, J.M.

    1994-09-01T23:59:59.000Z

    Initial studies of a variety of mission scenarios for the new Space Exploration Initiative, and the technologies necessary to enable or significantly enhance them, have identified the development of advanced space power systems - whether solar, chemical or nuclear - to be of prime importance. Lightweight, compact, reliable power systems for planetary rovers and a variety of surface vehicles, utility surface power, and power for advanced propulsion systems were identified as critical needs for these missions. This paper discusses these mission scenarios, the concomitant power system requirements; the power system options considered and identifies the significant potential benefits of nuclear power for meeting the power needs of the above applications.

  2. Mars Science Laboratory on Saturday, Los Alamos National Laboratory researchers

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighand Retrievals from a New 183-GHz WaterMarkRover's ChemCaminstrument to

  3. First phase beamlines at CLS PROPOSED & UNDER REVIEW (Mar 2001)

    E-Print Network [OSTI]

    Hitchcock, Adam P.

    First phase beamlines at CLS PROPOSED & UNDER REVIEW (Mar 2001) X-ray Emission Alex Moewes (U. Sask 27 June 2000 27 June 2000 27-Feb 2001 27-Feb 2001 27-Feb 2001 #12;

  4. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pierce, Stephen

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 389: 271294, 2009 doi: 10.3354/meps08153, partly by mining a wealth of in- formation painstakingly accumulated over past decades on species

  5. A Mars-back approach to lunar surface operations

    E-Print Network [OSTI]

    Kleinwaks, Howard Neil

    2005-01-01T23:59:59.000Z

    The Vision for Space Exploration initiated a new space exploration program and called for a long term national commitment to space exploration starting with a return to the Moon and continuing with the exploration of Mars ...

  6. Strategies for affordable human Moon and Mars exploration

    E-Print Network [OSTI]

    Wooster, Paul Douglas

    2007-01-01T23:59:59.000Z

    The U.S. Vision for Space Exploration calls for NASA to undertake human exploration of the Moon and Mars. This endeavor must be performed in an affordable manner in order to be successful. This thesis outlines a series of ...

  7. Design of spacecraft for exploration of the Moon and Mars

    E-Print Network [OSTI]

    Epps, Brenden P

    2006-01-01T23:59:59.000Z

    In this thesis, I develop the conceptual design of the spacecraft required for human-Lunar and human-Mars exploration. The requirements for these vehicles are derived in the context of the NASA Concept Exploration & ...

  8. Mixed convection and heat management in the Mars gravity biosatellite

    E-Print Network [OSTI]

    Marsh, Jesse B. (Jesse Benjamin)

    2007-01-01T23:59:59.000Z

    The Mars Gravity Biosatellite will house fifteen mice in a low Earth orbit satellite spinning about its longitudinal axis. The satellite's payload thermal control system will reject heat through the base of the payload ...

  9. Infrared Brightness Temperature of Mars, 1983-2103

    E-Print Network [OSTI]

    E. L. Wright

    2007-03-25T23:59:59.000Z

    The predicted infrared brightness temperature of Mars using the 1976 model of Wright is tabulated here for the period 1983 to 2103. This model was developed for far-infrared calibration, and is still being used for JCMT calibration.

  10. Tuesday, March 13, 2007 POSTER SESSION I: MARS VALLEY NETWORKS

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Regions and Multiple Water Release Events in Valley Networks of the Libya Montes Region on Mars [#1729] We investigate a valley network in the western Libya Montes region, which originates in a highland mountain

  11. Geophysical evolution of planetary interiors and surfaces : Moon & Mars

    E-Print Network [OSTI]

    Evans, Alexander Joseph

    2013-01-01T23:59:59.000Z

    The interiors and surfaces of the terrestrial planetary bodies provide us a unique opportunity to gain insight into planetary evolution, particularly in the early stages subsequent to accretion. Both Mars and the Moon are ...

  12. Investigation of a minimum energy Earth-Mars trajectory

    E-Print Network [OSTI]

    Brown, Richard Emett

    1967-01-01T23:59:59.000Z

    INVESTIGATION OF A MINIMUM ENERGY EARTH-MARS TRAJECTORY A Thesis by Richard Emmett grown Submitted to the Graduate Co11ege of the Texas ASM University in partia1 fulfi11ment of the requirements for the degree of MASTER OF SCIENCE May 1967... Major Subject: Aerospace Engineering INVESTIGATION OF A MINIMIIM ENERGy EARTH MARS TRAJECTORy A Thesis by Richard Emmett Brown Approved as to style and content by; (Co-chairman of Committee) (Head of Department) (Member) May I967 TABLE...

  13. Sep Nov Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov Jan

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7 AugustAFRICAN3u ;;;:: A'Salmon,Sep Nov Jan Mar

  14. exploration, Los Alamos Rover

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for SuperCam, essentially making this instrument a tri-national collaboration. The Spanish agreement also continues operation and coordination of the Remote Environmental...

  15. exploration, Los Alamos Rover

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, , ., ...,exercise program | National NuclearNASA

  16. Propulsion engineering study for small-scale Mars missions

    SciTech Connect (OSTI)

    Whitehead, J.

    1995-09-12T23:59:59.000Z

    Rocket propulsion options for small-scale Mars missions are presented and compared, particularly for the terminal landing maneuver and for sample return. Mars landing has a low propulsive {Delta}v requirement on a {approximately}1-minute time scale, but at a high acceleration. High thrust/weight liquid rocket technologies, or advanced pulse-capable solids, developed during the past decade for missile defense, are therefore more appropriate for small Mars landers than are conventional space propulsion technologies. The advanced liquid systems are characterize by compact lightweight thrusters having high chamber pressures and short lifetimes. Blowdown or regulated pressure-fed operation can satisfy the Mars landing requirement, but hardware mass can be reduced by using pumps. Aggressive terminal landing propulsion designs can enable post-landing hop maneuvers for some surface mobility. The Mars sample return mission requires a small high performance launcher having either solid motors or miniature pump-fed engines. Terminal propulsion for 100 kg Mars landers is within the realm of flight-proven thruster designs, but custom tankage is desirable. Landers on a 10 kg scale also are feasible, using technology that has been demonstrated but not previously flown in space. The number of sources and the selection of components are extremely limited on this smallest scale, so some customized hardware is required. A key characteristic of kilogram-scale propulsion is that gas jets are much lighter than liquid thrusters for reaction control. The mass and volume of tanks for inert gas can be eliminated by systems which generate gas as needed from a liquid or a solid, but these have virtually no space flight history. Mars return propulsion is a major engineering challenge; earth launch is the only previously-solved propulsion problem requiring similar or greater performance.

  17. Engine placement for manned descent at Mars considering single engine failures

    E-Print Network [OSTI]

    York, Stephen P. (Stephen Patrick)

    2006-01-01T23:59:59.000Z

    Previous missions to Mars have landed masses of approximately I metric ton on the surface. Vehicles large enough to support humans on the flight to Mars and land them safely on the surface are closer to 100 metric tons, a ...

  18. An Independent Assessment of the Technical Feasibility of the Mars One Mission Plan

    E-Print Network [OSTI]

    Do, Sydney

    In mid-2012, the Mars One program was announced, aiming to build the first human settlement on the surface of Mars. Following a series of precursor missions to develop and deploy key technologies, the first crewed mission ...

  19. Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group

    E-Print Network [OSTI]

    Summons, Roger Everett

    The Mars Science Laboratory (MSL) has an instrument package capable of making measurements of past and present environmental conditions. The data generated may tell us if Mars is, or ever was, able to support life. However, ...

  20. Mars Robotic Outpost Papers "We can all go to Mars-the Mars Outpost Proposal" Louis Friedman and Bruce Murray, the

    E-Print Network [OSTI]

    Dennis, Robert G.

    and handling -ISRU plant deployment -internal habitat servicing "Automation and Robotics for Human Mars sampling from aerial vehicles -in situ propellants and vehicles that use them -subsurface and submersible vehicle concepts -high speed, rough terrain, sensing and processing for autonomous navigation and data

  1. Creation Date: Mar 2014 Version: 1 Edited by: LB Application Services ITS Managed Document

    E-Print Network [OSTI]

    Northern British Columbia, University of

    Creation Date: Mar 2014 Version: 1 Edited by: LB Application Services ITS Managed Document VIEW Date: Mar 2014 Version: 1 Edited by: LB Application Services ITS Managed Document VIEW CLIENT Date: Mar 2014 Version: 1 Edited by: LB Application Services ITS Managed Document VIEW CLIENT

  2. Universidad Nacional Autnoma de Mxico Instituto de Ciencias del Mar y Limnologa

    E-Print Network [OSTI]

    Islas, Len

    Universidad Nacional Autnoma de Mxico Instituto de Ciencias del Mar y Limnologa Informe de Instituto de Ciencias del Mar y Limnologa Fundamento Legal Legislacin Universitaria Estatuto General;Informe de actividades 2011 - 2012 Instituto de Ciencias del Mar y Limnologa Instituto de Ciencias del

  3. TTF/VUV-FEL meeting, 21. Mar 06 SaseFelPhotonDiagnostics

    E-Print Network [OSTI]

    TTF/VUV-FEL meeting, 21. Mar 06 SaseFelPhotonDiagnostics Gas Monitor Detector Electronics from charged particles to digital value Fini Jastrow, TTF/VUV-FEL meeting, 21. Mar 06 #12;TTF/VUV-FEL meeting, 21. Mar 06 SaseFelPhotonDiagnostics The Detector Ion Current Measurement Electron Pulse Measurement

  4. Surface runoff features on Mars: Testing the carbon dioxide formation hypothesis

    E-Print Network [OSTI]

    Nimmo, Francis

    materials and properties; KEYWORDS: Mars, gullies, seepage, runoff, carbon dioxide, water Citation: StewartSurface runoff features on Mars: Testing the carbon dioxide formation hypothesis Sarah T. Stewart1, S. T., and F. Nimmo, Surface runoff features on Mars: Testing the carbon dioxide formation

  5. Attitude and Position Estimation on the Mars Exploration Khaled S. Ali, C. Anthony Vanelli, Jeffrey J. Biesiadecki, Mark W. Maimone, Yang Cheng, A.

    E-Print Network [OSTI]

    communications sessions, how much power the rovers can get from the solar panels due to their relative Inertial Measurement Unit (IMU), and an articulated camera with a 16 degree field of view. The IMU not run constantly. Since the rovers are solar powered, there is a limited amount of power available

  6. Mars, the Moon, and the Ends of the Earth: Autonomy for Small Reactor Power Systems

    SciTech Connect (OSTI)

    Wood, Richard Thomas [ORNL

    2008-01-01T23:59:59.000Z

    In recent years, the National Aeronautics and Space Administration (NASA) has been considering deep space missions that utilize a small-reactor power system (SRPS) to provide energy for propulsion and spacecraft power. Additionally, application of SRPS modules as a planetary power source is being investigated to enable a continuous human presence for nonpolar lunar sites and on Mars. A SRPS can supply high-sustained power for space and surface applications that is both reliable and mass efficient. The use of small nuclear reactors for deep space or planetary missions presents some unique challenges regarding the operations and control of the power system. Current-generation terrestrial nuclear reactors employ varying degrees of human control and decision-making for operations and benefit from periodic human interaction for maintenance. In contrast, the control system of a SRPS employed for deep space missions must be able to accommodate unattended operations due to communications delays and periods of planetary occlusion while adapting to evolving or degraded conditions with no opportunity for repair or refurbishment. While surface power systems for planetary outposts face less extreme delays and periods of isolation and may benefit from limited maintenance capabilities, considerations such as human safety, resource limitations and usage priorities, and economics favor minimizing direct, continuous human interaction with the SRPS for online, dedicated power system management. Thus, a SRPS control system for space or planetary missions must provide capabilities for operational autonomy. For terrestrial reactors, large-scale power plants remain the preferred near-term option for nuclear power generation. However, the desire to reduce reliance on carbon-emitting power sources in developing countries may lead to increased consideration of SRPS modules for local power generation in remote regions that are characterized by emerging, less established infrastructures. Additionally, many Generation IV (Gen IV) reactor concepts have goals for optimizing investment recovery and economic efficiency that promote significant reductions in plant operations and maintenance staff over current-generation nuclear power plants. To accomplish these Gen IV goals and also address the SRPS remote-siting challenges, higher levels of automation, fault tolerance, and advanced diagnostic capabilities are needed to provide nearly autonomous operations with anticipatory maintenance. Essentially, the SRPS control system for several anticipated terrestrial applications can benefit from the kind of operational autonomy that is necessary for deep space and planetary SRPS-enabled missions. Investigation of the state of the technology for autonomous control confirmed that control systems with varying levels of autonomy have been employed in robotic, transportation, spacecraft, and manufacturing applications. As an example, NASA has pursued autonomy for spacecraft and surface exploration vehicles (e.g., rovers) to reduce mission costs, increase efficiency for communications between ground control and the vehicle, and enable independent operation of the vehicle during times of communications blackout. However, autonomous control has not been implemented for an operating terrestrial nuclear power plant nor has there been any experience beyond automating simple control loops for space reactors. Current automated control technologies for nuclear power plants are reasonably mature, and fully automated control of normal SRPS operations is clearly feasible. However, the space-based and remote terrestrial applications of SRPS modules require autonomous capabilities that can accommodate nonoptimum operations when degradation, failure, and other off-normal events challenge the performance of the reactor while immediate human intervention is not possible. The independent action provided by autonomous control, which is distinct from the more limited self action of automated control, can satisfy these conditions. Key characteristics that distinguish autonomous control i

  7. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Townsend, David W.

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 427: 2949, 2011 doi: 10.3354/meps09043 Published April 12 INTRODUCTION The Gulf of Maine (GoM) is a semi-enclosed conti- nental shelf system to storm events in fall; (2) gradual chloro- phyll increases in response to seasonal wind- and cooling

  8. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    White, Angelicque

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 323: 3545, 2006 Published October 5 derived from the lit- erature, resultant model solutions allow us to explore the ecological significance, a scenario termed P-mining. Given the temporal phasing of these migrations, our results indicate that while

  9. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Boyce, C. Kevin

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 228: 153163, 2002 Published March 6 of California, Berkeley, California 94720, USA 2 Ecology, Behavior and Evolution Section, Division of Biology and non-carnivorous species within climatic zones play an important role in deter- mining

  10. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Maldonado, Manuel

    (Escherichia coli and Vibrio anguillarum), and 1 marine yeast Rhodotorula sp. All 3 microbes were ingestedMARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 403: 7589, 2010 doi: 10.3354/meps08411, Spain 2 Marine Bioproducts Engineering Group, Dalian Institute of Chemical Physics, Chinese Academic

  11. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 340: 259270, 2007 Published June 18 be several warming and cooling periods, spanning sev- eral decades each. This has been documented, for example, in British waters where a cooling trend was detected up to about 1930, followed by a warming

  12. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Sponaugle, Su

    of 28.5C) or the interference of mesoscale advection processes. When 4 cohorts that settled during the passage of mesoscale eddies were omitted from the analysis, 61% of the varia- tion in recruitment due to mesoscale oceanographic circulation. Photos: Evan D'Alessandro OPENPEN ACCESSCCESS #12;Mar Ecol

  13. Monday, March 13, 2006 MARS EXPRESS: PROBING THE DEPTHS

    E-Print Network [OSTI]

    Rathbun, Julie A.

    . Plaut J. J. Observations of the "Stealth" Radar Feature in the Mars Express MARSIS Investigation [#1946] We will present the latest observations of the "Stealth" radar feature by the MARSIS radar. 9:30 a and Plains materials in Gusev, complementing in situ Spirit observations. 10:15 a.m. Bibring J.-P. * Langevin

  14. Math 110 Homework Assignment 21 due date: Mar. 18, 2013

    E-Print Network [OSTI]

    Roth, Mike

    Math 110 Homework Assignment 21 due date: Mar. 18, 2013 1. Consider a fish population with adult fish and young fish where the transition from one year's population to the next is 0.7 0.2 3 0 representing a 70% adult survival rate from year to year, a 20% survival rate for young fish, and the fact

  15. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Poulin, Robert

    . An increased impact of parasites on amphipod popula- tions with global warming is predicted and the possibleMARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 415: 1122, 2010 doi: 10.3354/meps08742, particularly global warming, on parasitism should be of major concern. Probably the best-studied marine

  16. Energetic neutral atoms at Mars 4. Imaging of planetary oxygen

    E-Print Network [OSTI]

    Lukyanov, Alex

    Energetic neutral atoms at Mars 4. Imaging of planetary oxygen S. Barabash and M. Holmstro of the Martian oxygen exosphere/corona results in the production of planetary oxygen ions. The newborn ions start. The oxygen ions can then charge exchange with the neutral gases (H, H2, and O) of the Martian exosphere

  17. DU 27 AU 29 MARS SYMPOSIUM Innovation for the management

    E-Print Network [OSTI]

    Jeanjean, Louis

    DU 27 AU 29 MARS SYMPOSIUM Innovation for the management of echinococcosis-2014 (ImE-2014) Nouveaux hospitalier universitaire de Besanon) ; Centre national de rfrence chinococcose alvolaire, Centre hospitalier rgional universitaire de Besanon LIEU Chambre de commerce et d'industrie du Doubs, 46 avenue

  18. MARS TERRAIN IMAGE CLASSIFICATION USING CARTESIAN GENETIC PROGRAMMING

    E-Print Network [OSTI]

    Fernandez, Thomas

    MARS TERRAIN IMAGE CLASSIFICATION USING CARTESIAN GENETIC PROGRAMMING J. Leitner, S. Harding, A. F to human designed approaches, a great deal of progress has been made using machine learning techniques to perform classification from images. In this work, we demonstrate the first known use of Cartesian Genetic

  19. Monday, March 13, 2006 MARS: CORE TO CLOUDS

    E-Print Network [OSTI]

    Rathbun, Julie A.

    with current orbital configurations. We run the model for five years with a northern water ice cap then release Core [#1500] We present new melting data in the system Fe-Ni-S at Martian core pressures, using multi. Clouds, Cap, and Consequences: Outflow Events and Mars Hesperian Climate [#1484] We focus on how outflows

  20. Lidar on the Phoenix mission to Mars James Whiteway,1

    E-Print Network [OSTI]

    Duck, Thomas J.

    Cameron Dickinson,1 Leonce Komguem,1 and Clive Cook1 Received 30 August 2007; revised 9 March 2008 of backscattered laser light from airborne dust and clouds. These observations will be coordinated with solar, and C. Cook (2008), Lidar on the Phoenix mission to Mars, J. Geophys. Res., 113, E00A08, doi:10

  1. MAR flow mapping of Analytical Chemistry Operations (Preliminary Report)

    SciTech Connect (OSTI)

    Barr, Mary E. [Los Alamos National Laboratory; Farish, Thomas J. [Los Alamos National Laboratory

    2012-06-13T23:59:59.000Z

    The recently released Supplemental Directive, NA-1 SD 1027, updates the radionuclide threshold values in DOE-STD-1027-92 CN1 to reflect the use of modern parameters for dose conversion factors and breathing rates. The directive also corrects several arithmetic errors within the original standard. The result is a roughly four-fold increase in the amount of weapons-grade nuclear material allowed within a designated radiological facility. Radiological laboratory space within the recently constructed Radiological Laboratory Office and Utility Building (RLUOB) is slated to house selected analytical chemistry support activities in addition to small-scale actinide R&D activities. RLUOB is within the same facility operations envelope as TA-55. Consolidation of analytical chemistry activities to RLUOB and PF-4 offers operational efficiency improvements relative to the current pre-CMRR plans of dividing these activities between RLUOB, PF-4, and CMR. RLUOB is considered a Radiological Facility under STD-1027 - 'Facilities that do not meet or exceed Category 3 threshold criteria but still possess some amount of radioactive material may be considered Radiological Facilities.' The supplemental directive essentially increases the allowable material-at-risk (MAR) within radiological facilities from 8.4 g to 38.6 g for {sup 239}Pu. This increase in allowable MAR provides a unique opportunity to establish additional analytical chemistry support functions in RLUOB without negatively impacting either R&D activities or facility operations. Individual radiological facilities are tasked to determine MAR limits (up to the Category 3 thresholds) appropriate to their operational conditions. This study presents parameters that impact establishing MAR limits for RLUOB and an assessment of how various analytical chemistry support functions could operate within the established MAR limits.

  2. Mars mission opportunity and transit time sensitivity for a nuclear thermal rocket propulsion application

    SciTech Connect (OSTI)

    Young, A.C.; Mulqueen, J.A.; Nishimuta, E.L.; Emrich, W.J. (George C. Marshall Space Flight Center, Marshall Space Flight Center, Alabama 35812 (United States))

    1993-01-10T23:59:59.000Z

    President George Bush's 1989 challenge to America to support the Space Exploration Initiative (SEI) of Back to the Moon and Human Mission to Mars'' gives the space industry an opportunity to develop effective and efficient space transportation systems. This paper presents stage performance and requirements for a nuclear thermal rocket (NTR) Mars transportation system to support the human Mars mission of the SEI. Two classes of Mars mission profiles are considered in developing the NTR propulsion vehicle performance and requirements. The two Mars mission classes include the opposition class and conjunction class. The opposition class mission is associated with relatively short Mars stay times ranging from 30 to 90 days and total mission duration of 350 to 600 days. The conjunction class mission is associated with much longer Mars stay times ranging from 500 to 600 days and total mission durations of 875 to 1,000 days. Vehicle mass scaling equations are used to determine the NTR stage mass, size, and performance range required for different Mars mission opportunities and for different Mars mission durations. Mission opportunities considered include launch years 2010 to 2018. The 2010 opportunity is the most demanding launch opportunity and the 2018 opportunity is the least demanding opportunity. NTR vehicle mass and size sensitivity to NTR engine thrust level, engine specific impulse, NTR engine thrust-to-weight ratio, and Mars surface payload are presented. NTR propulsion parameter ranges include those associated with NERVA, particle bed reactor (PBR), low-pressure, and ceramic-metal-type engine design.

  3. Reducing the risk to Mars: The gas core nuclear rocket

    SciTech Connect (OSTI)

    Howe, S. D.; DeVolder, B.; Thode, L.; Zerkle, D. [P.O. Box 1663, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    1998-01-15T23:59:59.000Z

    The next giant leap for mankind will be the human exploration of Mars. Almost certainly within the next thirty years, a human crew will brave the isolation, the radiation, and the lack of gravity to walk on and explore the Red planet. However, because the mission distances and duration will be hundreds of times greater than the lunar missions, a human crew will face much greater obstacles and a higher risk than those experienced during the Apollo program. A single solution to many of these obstacles is to dramatically decrease the mission duration by developing a high performance propulsion system. The gas-core nuclear rocket (GCNR) has the potential to be such a system. We have completed a comparative study of the potential impact that a GCNR could have on a manned Mars mission. The total IMLEO, transit times, and accumulated radiation dose to the crew will be compared with the NASA Design Reference Missions.

  4. Reducing the risk to Mars: The gas core nuclear rocket

    SciTech Connect (OSTI)

    Howe, S.D.; DeVolder, B.; Thode, L.; Zerkle, D.

    1998-12-31T23:59:59.000Z

    The next giant leap for mankind will be the human exploration of Mars. Almost certainly within the next thirty years, a human crew will brave the isolation, the radiation, and the lack of gravity to walk on and explore the Red planet. However, because the mission distances and duration will be hundreds of times greater than the lunar missions, a human crew will face much greater obstacles and a higher risk than those experienced during the Apollo program. A single solution to many of these obstacles is to dramatically decrease the mission duration by developing a high performance propulsion system. The gas-core nuclear rocket (GCNR) has the potential to be such a system. The authors have completed a comparative study of the potential impact that a GCNR could have on a manned Mars mission. The total IMLEO, transit times, and accumulated radiation dose to the crew will be compared with the NASA Design Reference Missions.

  5. DEVELOPMENT AND DEPLOYMENT OF THE MOBILE ARM RETRIEVAL SYSTEM (MARS) - 12187

    SciTech Connect (OSTI)

    BURKE CA; LANDON MR; HANSON CE

    2012-01-30T23:59:59.000Z

    Washington River Protection Solutions (WRPS) is developing and deploying Mobile Arm Retrieval System (MARS) technologies solutions to support retrieval of radioactive and chemical waste from underground single shell storage tanks (SST) located at the Hanford Site, which is near Richland, Washington. WRPS has developed the MARS using a standardized platform that is capable of deploying multiple retrieval technologies. To date, WRPS, working with their mentor-protege company, Columbia Energy and Environmental Services (CEES), has developed two retrieval mechanisms, MARS-Sluicing (MARS-S) and MARS-Vacuum (MARS-V). MARS-S uses pressurized fluids routed through spray nozzles to mobilize waste materials to a centrally located slurry pump (deployed in 2011). MARS-V uses pressurized fluids routed through an eductor nozzle. The eductor nozzle allows a vacuum to be drawn on the waste materials. The vacuum allows the waste materials to be moved to an in-tank vessel, then extracted from the SST and subsequently pumped to newer and safer double shell tanks (DST) for storage until the waste is treated for disposal. The MARS-S system is targeted for sound SSTs (i.e., non leaking tanks). The MARS-V is targeted for assumed leaking tanks or those tanks that are of questionable integrity. Both versions of MARS are being/have been developed in compliance with WRPS's TFC-PLN-90, Technology Development Management Plan. TFC-PLN-90 includes a phased approach to design, testing, and ultimate deployment of new technologies. The MARS-V is scheduled to be deployed in tank 241-C-105 in late 2012.

  6. DEVELOPMENT AND DEPLOYMENT OF THE MOBILE ARM RETRIEVAL SYSTEM (MARS) - 12187

    SciTech Connect (OSTI)

    BURKE CA; LANDON MR; HANSON CE

    2011-11-08T23:59:59.000Z

    Washington River Protection Solutions (WRPS) is developing and deploying Mobile Arm Retrieval System (MARS) technologies solutions to support retrieval of radioactive and chemical waste from underground single shell storage tanks (SST) located at the Hanford Site, which is near Richland, Washington. WRPS has developed the MARS using a standardized platform that is capable of deploying multiple retrieval technologies. To date, WRPS, working with their mentor-protege company, Columbia Energy and Environmental Services (CEES), has developed two retrieval mechanisms, MARS-Sluicing (MARS-S) and MARS-Vacuum (MARS-V). MARS-S uses pressurized fluids routed through spray nozzles to mobilize waste materials to a centrally located slurry pump (deployed in 2011). MARS-V uses pressurized fluids routed through an eductor nozzle. The eductor nozzle allows a vacuum to be drawn on the waste materials. The vacuum allows the waste materials to be moved to an in-tank vessel, then extracted from the SST and subsequently pumped to newer and safer double shell tanks (DST) for storage until the waste is treated for disposal. The MARS-S system is targeted for sound SSTs (i.e., non leaking tanks). The MARS-V is targeted for assumed leaking tanks or those tanks that are of questionable integrity. Both versions of MARS are beinglhave been developed in compliance with WRPS's TFC-PLN-90, Technology Development Management Plan [1]. TFC-PLN-90 includes a phased approach to design, testing, and ultimate deployment of new technologies. The MARS-V is scheduled to be deployed in tank 241-C-105 in late 2012.

  7. Development and Deployment of the Mobile Arm Retrieval System (MARS) - 12187

    SciTech Connect (OSTI)

    Burke, Christopher A.; Landon, Matthew R. [Washington River Protection Solutions, Richland, Washington 99352 (United States); Hanson, Carl E. [AREVA Federal Services, Richland, Washington 99352 (United States)

    2012-07-01T23:59:59.000Z

    Washington River Protection Solutions (WRPS) is developing and deploying Mobile Arm Retrieval System (MARS) technologies solutions to support retrieval of radioactive and chemical waste from underground single shell storage tanks (SST) located at the Hanford Site, which is near Richland, Washington. WRPS has developed the MARS using a standardized platform that is capable of deploying multiple retrieval technologies. To date, WRPS, working with their mentor-protege company, Columbia Energy and Environmental Services (CEES), has developed two retrieval mechanisms, MARS-Sluicing (MARS-S) and MARS-Vacuum (MARS-V). MARS-S uses pressurized fluids routed through spray nozzles to mobilize waste materials to a centrally located slurry pump (deployed in 2011). MARS-V uses pressurized fluids routed through an eductor nozzle. The eductor nozzle allows a vacuum to be drawn on the waste materials. The vacuum allows the waste materials to be moved to an in-tank vessel, then extracted from the SST and subsequently pumped to newer and safer double shell tanks (DST) for storage until the waste is treated for disposal. The MARS-S system is targeted for sound SSTs (i.e., non leaking tanks). The MARS-V is targeted for assumed leaking tanks or those tanks that are of questionable integrity. Both versions of MARS are being/have been developed in compliance with WRPS's TFC-PLN-90, Technology Development Management Plan [1]. TFC-PLN-90 includes a phased approach to design, testing, and ultimate deployment of new technologies. The MARS-V is scheduled to be deployed in tank 241-C-105 in late 2012. (authors)

  8. Analysis of organic molecules using the Mars Organic Analyzer, a portable, automated microfabricated capillary electrophoresis instrument

    E-Print Network [OSTI]

    Stockton, Amanda Michelle

    2010-01-01T23:59:59.000Z

    utilizes subcritical water extraction and the Mars Organiceither by subcritical water extraction 115 or by sublimationwater. Subcritical Water Extraction / Reaction Protocol. A

  9. Report Date: Mar 31, 2003 Semi-Annual Technical Progress Report

    E-Print Network [OSTI]

    Schechter, David S.

    Report Date: Mar 31, 2003 Semi-Annual Technical Progress Report PREFERRED WATERFLOOD MANAGEMENT ........................................................................1 Development of Reservoir Management Database Software

  10. N2-associated surface warming on early Mars

    E-Print Network [OSTI]

    von Paris, P; Rauer, H; Stock, J W

    2013-01-01T23:59:59.000Z

    Early Mars may have had a warmer and denser atmosphere allowing for the presence of liquid water on the surface. However, climate model studies have not been able to reproduce these conditions even with a CO2 atmosphere of several bars. Recent 3D simulations of the early Mars climate show that mean surface temperatures only slightly below 273K could be reached locally. We want to investigate the effect of increased partial pressures of N2 on early Mars' surface temperature by including pressure broadening of absorption lines and collision-induced N2-N2 absorption. A 1D radiative-convective cloud-free atmospheric model was used to calculate temperature profiles and surface conditions. We performed a parameter study varying the N2 partial pressures from 0 to 0.5bar at CO2 partial pressures between 0.02bar and 3bar. These values are consistent with existing estimates of the initial, pre-Noachian reservoir. Solar insolation was set to be consistent with the late Noachian. Our 1D global mean simulations clearly sh...

  11. Nurturing young children's curiosity about the universe

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire3627 Federal RegisterImplementation3D SpatialNurturing young

  12. Chemist Transformed by Curiosity | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma of the RotatingChemicalChemical

  13. Time variations of Mars' gravitational field and seasonal changes in the masses of the polar ice caps

    E-Print Network [OSTI]

    Smith, David E.

    Tracking of the Mars Global Surveyor spacecraft has been used to measure changes in the long-wavelength gravity field of Mars and to estimate the seasonal mass of carbon dioxide that is deposited in the polar regions each ...

  14. 19Bulletin Infirmier du Cancer Vol.6-n1-janvier-fvrier-mars 2006 SOR savoir patient

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    19Bulletin Infirmier du Cancer Vol.6-n1-janvier-fvrier-mars 2006 SOR savoir patient A fin de;20Bulletin Infirmier du Cancer Vol.6-n1-janvier-fvrier-mars 2006 SOR savoir patient mandations pour la

  15. Biagioli, Mario, Galileo's System of Patronage , History of Science, 28:1=79 (1990:Mar.) p.1 Biagioli, Mario, Galileo's System of Patronage , History of Science, 28:1=79 (1990:Mar.) p.1

    E-Print Network [OSTI]

    Biagioli, Mario, Galileo's System of Patronage , History of Science, 28:1=79 (1990:Mar.) p.1 #12;Biagioli, Mario, Galileo's System of Patronage , History of Science, 28:1=79 (1990:Mar.) p.1 #12;Biagioli, Mario, Galileo's System of Patronage , History of Science, 28:1=79 (1990:Mar.) p.1 #12;Biagioli, Mario

  16. ltima actualizacin 12-06-13 Nov Dic Ene Feb Mar Abr May Jun Jul Ago Sept Oct Nov

    E-Print Network [OSTI]

    Escolano, Francisco

    /Canadeka/Chineka Energias renovables 15Mar/15Jul continuamente abierta continuamente abierta continuamente abierta 14Febr/25

  17. MAR-CPS: Measurable Augmented Reality for Prototyping Cyber-Physical Systems

    E-Print Network [OSTI]

    Reif, Rafael

    MAR-CPS: Measurable Augmented Reality for Prototyping Cyber-Physical Systems Shayegan Omidshafiei in CPSs, hardware-in-the-loop experiments are an essential step for transitioning from simulations to real in the Aerospace Controls Laboratory at the Massachusetts Institute of Technology. This system, referred to as MAR-CPS

  18. THE CHEMIN MINERALOGICAL INSTRUMENT ON THE MARS SCIENCE LABORATORY MISSION. D.F. Blake1

    E-Print Network [OSTI]

    Downs, Robert T.

    THE CHEMIN MINERALOGICAL INSTRUMENT ON THE MARS SCIENCE LABORATORY MISSION. D.F. Blake1 , D or past habitable environments on Mars. Mineralogy is important in this regard because minerals. By determining the mineralogical composition of a rock or soil, one can often deduce the conditions under which

  19. Fluid Core Size of Mars from Detection of the Solar Tide

    E-Print Network [OSTI]

    Manga, Michael

    variations in air pressure and the odd gravity harmonic J3, given knowledge of cap mass distribution mo- ment of inertia. However, factors such as mantle composition, temperature change with increas deformation of the figure of Mars by the gravitational pull of the Sun and hence a less rigid Mars (7). We

  20. Solar flux variability of Mars' exosphere densities and temperatures Jeffrey M. Forbes,1

    E-Print Network [OSTI]

    Forbes, Jeffrey

    Solar flux variability of Mars' exosphere densities and temperatures Jeffrey M. Forbes,1 Frank G, the response of Mars' exosphere to long-term solar change is established and compared to that of Earth conditions) change only 3650% as much as those at Earth as solar activity increases from solar minimum

  1. Innover en formation: Accompagner autrement les enseignants entrant dans le mtier Mars 2012 L'Harmattan

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Innover en formation: Accompagner autrement les enseignants entrant dans le métier Mars 2012 L'Harmattan Mars 2012 L'Harmattan renforcé entre l'école, l'université et un « collectif » de formation in situ

  2. MARS15 study of the Energy Production Demonstrator Model for Megawatt

    E-Print Network [OSTI]

    McDonald, Kirk

    MARS15 study of the Energy Production Demonstrator Model for Megawatt proton beams in the 0.5 120 Targetry Workshop HPT5, Fermilab #12;Energy Production Demonstrator MARS15 Model Solid targets R= 60 cm Energy Production/Materials Testing LAQGSM/CEM generators were usedU-nat, 3 GeV, Energy deposition, Ge

  3. Chemical markers of possible hot spots on Mars Ah-San Wong and Sushil K. Atreya

    E-Print Network [OSTI]

    Atreya, Sushil

    Chemical markers of possible hot spots on Mars Ah-San Wong and Sushil K. Atreya Department not be ruled out. If outgassing does occur somewhere on Mars, water, carbon dioxide, sulfur species, methane, and to a lesser extent, halogens would be the likely molecules of outgassing, based on terrestrial analogs

  4. Development of the Mars microbeam Raman spectrometer (MMRS) Alian Wang,1

    E-Print Network [OSTI]

    mineralogy in a planetary exploration. INDEX TERMS: 3672 Mineralogy and Petrology: Planetary mineralogy and petrology (5410); 3694 Mineralogy and Petrology: Instruments and techniques; 3994 Mineral Physics: Raman spectroscopy, Mars in-situ mineralogy, Planetary on-surface mineral identification, Water on Mars

  5. CO2-SO2 clathrate hydrate formation on early Mars1 Eric Chassefirea,b

    E-Print Network [OSTI]

    Boyer, Edmond

    and maintained a global average surface temperature ~230 K. Because35 clathrates trap SO2 more favorably than CO2 as a possible greenhouse gas which worked together55 with CO2 to raise the surface temperature of early Mars1 CO2-SO2 clathrate hydrate formation on early Mars1 2 Eric Chassefirea,b , Emmanuel Dartoisc

  6. MARS IN A MINUTE: What Happens When the Sun Blocks our Signal?

    E-Print Network [OSTI]

    Waliser, Duane E.

    MARS IN A MINUTE: What Happens When the Sun Blocks our Signal? About every two years, Earth and Mars wind up on opposite sides of the sun. Thats called "solar conjunction." It's like being on either spacecraft send back signals, charged particles from the sun could interfere, causing gaps in the data

  7. Thursday, March 26, 2009 POSTER SESSION II: MARS: TECTONICS AND DYNAMICS

    E-Print Network [OSTI]

    Rathbun, Julie A.

    H. Yang W. Global Dynamical Significance of Zigzag Fractures in South Polar Ice Cap of Mars [#1225] Regional zigzag fractures and an echelon fractures developed in the south polar ice cap of Mars implies driven water flow in crustal aquifer systems. Ruedas T. Tackley P. J. Solomon S. C. Water, Melting

  8. E906/SeaQuest MARS15 Simulation

    SciTech Connect (OSTI)

    Christian, David; Geelhoed, Mike; /Fermilab

    2011-02-01T23:59:59.000Z

    The E906/SeaQuest spectrometer is designed to measure high energy muons produced in the forward direction by interactions of the 120 GeV Main Injector proton beam with a variety of targets. The spectrometer consists of two dipole magnets (both of which deflect charged particles in the horizontal plane) and a collection of tracking detectors. The first spectrometer magnet (FMAG) is a solid iron magnet. This magnet serves as a beam dump as well as a muon analysis magnet. A series of MARS15 simulations were done by Nikolai Mokhov to verify and guide the design of concrete shielding around FMAG and the target area immediately upstream of FMAG. The result of the fourth and last round of simulations is summarized here. This was a high statistics simulation that required approximately 48 cpu-weeks of computing time on the APC Energy Deposition Group cluster. The MARS15 simulation used a model of FMAG and its surroundings. The model includes air gaps in the concrete shielding, the largest of which are required because of the geometry of the saddle coils. A small volume surrounding the beam line just upstream of the magnet is filled with borated polyethylene. The borated polyethylene extends into the air gap necessitated by the saddle coils. With the exception of the top layer of six 'H' blocks, the concrete shielding is modeled in detail. The top layer of blocks are intended to shield the roof and downstream end of NM4 in the event of a loss of beam accident well upstream of the target; they provide only a small benefit in the normal running condition simulated by MARS.

  9. Bow Mar, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomass ConversionsSouthbyBoston Heights, Ohio:BoulevardBow Mar, Colorado: Energy

  10. New Mars exhibit at the Bradbury Science Museum

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire Solar541,9337, 2011R - 445 CU -Standards Began inNew Mars

  11. MHK Projects/Del Mar Landing | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf KilaueaInformationCygnet < MHK Projects Jump to:Notnac,Mar

  12. MHK Technologies/PSE MAR | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose Bend < MHK ProjectsFlagshipNAREC <AirOyster < MHKPS FrogMAR

  13. Mars Hill (2006) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose Bend < MHKconvertersourcesourceCharacterizationMark2015:Mars Hill

  14. Mars Hill (2007) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose Bend < MHKconvertersourcesourceCharacterizationMark2015:Mars

  15. Boca Del Mar, Florida: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomass ConversionsSouthby 2022 |BleckleyMotionBoca Del Mar, Florida: Energy

  16. Water in the Martian regolith from OMEGA/Mars Express

    E-Print Network [OSTI]

    Audouard, Joachim; Vincendon, Mathieu; Milliken, Ralph E; Jouglet, Denis; Bibring, Jean-Pierre; Gondet, Brigitte; Langevin, Yves

    2014-01-01T23:59:59.000Z

    Here we discuss one of the current reservoirs of water on Mars, the regolith and rocks exposed at the surface. This reservoir is characterized by the presence of H_{2}O- and OH- bearing phases that produce a broad absorption at a wavelength of \\sim 3 \\mu m in near-infrared (NIR) reflectance spectra. This absorption is present in every ice-free spectrum of the Martian surface obtained thus far by orbital NIR spectrometers. We present a quantitative analysis of the global distribution of the 3 \\mu m absorption using the Observatoire pour la Min\\'eralogie, l\\'\\Eau, les Glaces et l\\'\\Activit\\'e (OMEGA) imaging spectrometer that has been mapping the surface of Mars at kilometer scale for more than ten years. Based on laboratory reflectance spectra of a wide range of hydrous minerals and phases, we estimate a model-dependent water content of 4\\pm 1 wt. \\% in the equatorial and mid-latitudes. Surface hydration increases with latitude, with an asymmetry in water content between the northern and southern hemispheres. ...

  17. Constraining the average fill densities of Mars' lowlands and fluvial erosion of Titan's polar regions.

    E-Print Network [OSTI]

    Tewelde, Yodit

    2013-01-01T23:59:59.000Z

    Other than Earth, Mars and Titan are the only bodies in our Solar System where we have observed widespread fluvial activity. In this thesis I present two approaches for constraining the extent of multiple resurfacing ...

  18. Microsoft Word - EE Tech Roadmap Appx A Mar 2013 templates ELECTRONIC...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    MAR CATRD4 Preliminary study how laser perforation of blueberry can improve fruit infusion with more yield and better quality CAT3 OSU Food Innovation Center QL CATRD5...

  19. LCLS Operations Schedule Jan Feb Mar Apr May Jun Jul Aug Sep

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Schedule Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Run 1 User Assisted Commissioning 1012009-12172009 2009 LCLS Run 1 Run 2 User Assisted Commissioning 5610-9132010...

  20. Early Mars hydrology: Meridiani playa deposits and the sedimentary record of Arabia Terra

    E-Print Network [OSTI]

    Andrews-Hanna, Jeffrey C.

    The Meridiani Planum region of Mars has been identified as a region of past aqueous activity by a combination of orbital and in situ observations that revealed evidence for sulfate-rich dirty evaporites formed in a playa ...

  1. NASA/TP-2005-213164 Managing Lunar and Mars Mission

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Space Information 7121 Standard Hanover, MD 21076-1320 #12;NASA/TP-2005-213164 Managing Lunar and Mars MissionSpace Information National Technical Information Service 7121 Standard Drive 5285 Port Royal Road Hanover, MD 21076

  2. PROPULSIVE AND LOGISTICAL FEASIBILTY OF ALTERNATIVE FUTURE HUMAN-ROBOTIC MARS EXPLORATION ARCHITECTURES

    E-Print Network [OSTI]

    ARCHITECTURES Howard K. Yue, Oliver L. de Weck June 2011 SSL # 13-11 #12;(This page, with the exception HUMAN- ROBOTIC MARS EXPLORATION ARCHITECTURES Howard K. Yue, Oliver L. de Weck June 2011 SSL # 13

  3. Design of power systems for extensible surface mobility systems on the Moon and Mars

    E-Print Network [OSTI]

    Hong, SeungBum, S.M. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    This thesis presents the power system model description and sample studies for extensible surface mobility systems on the Moon and Mars. The mathematical model of power systems for planetary vehicles was developed in order ...

  4. Stratigraphy of hydrated sulfates in the sedimentary deposits of Aram Chaos, Mars

    E-Print Network [OSTI]

    Glotch, Timothy D.

    Jeffrey AndrewsHanna,9 and Leah H. Roach8,10 Received 31 January 2009; revised 1 December 2009; accepted for Mars (CRISM) data [Murchie et al., 2009; Roach et al., 2009], has revolution- ized our understanding

  5. Math 266, Section 72. Quiz 4 Mar 23 Name: Pid: Solve the problems ...

    E-Print Network [OSTI]

    2012-04-07T23:59:59.000Z

    Math 266, Section 72. Quiz 4. Mar 23. Name: Pid: Solve the problems systematically and show all your work. 1. (4 pt) Find the general solution of y(3) ? 4y//. + 8y.

  6. Math 266, Section 72. Quiz 3 Mar 2 Name: Pid: Solve the problems ...

    E-Print Network [OSTI]

    2012-04-07T23:59:59.000Z

    Math 266, Section 72. Quiz 3. Mar 2. Name: Pid: Solve the problems systematically and show all your work. 1. Find the general solution of y. // ? y = ?x +1+2ex.

  7. Mars in the late Noachian : evolution of a habitable surface environment

    E-Print Network [OSTI]

    Johnson, Sarah Stewart

    2008-01-01T23:59:59.000Z

    This dissertation addresses whether simple life forms might have existed on Mars during the late Noachian epoch, and whether those life forms, or their traces, can be detected today. It begins by analyzing the ancient ...

  8. The Mars Gravity Biosatellite as an innovative partial gravity research platform

    E-Print Network [OSTI]

    Fulford-Jones, Thaddeus R. F

    2008-01-01T23:59:59.000Z

    The Mars Gravity Biosatellite is an unprecedented independent spaceflight platform for gravitational biology research. With a projected first launch after 2010, the low Earth orbit satellite will support a cohort of fifteen ...

  9. Interplanetary trajectory analysis for 2020-2040 Mars missions including Venus flyby opportunities

    E-Print Network [OSTI]

    Ishimatsu, Takuto

    2008-01-01T23:59:59.000Z

    This thesis develops a tool which is capable of calculating ballistic interplanetary trajectories with planetary flyby options based on the knowledge of astrodynamics and analyzes Mars trajectories in the time frame 2020 ...

  10. A permanent settlement on Mars : the first cut in the land of a new frontier

    E-Print Network [OSTI]

    Petrov, Georgi Ivanov, 1977-

    2004-01-01T23:59:59.000Z

    Humans have been fascinated with the planet Mars for thousands of years. Only in the last half a century has it been possible to contemplate sending people to our celestial neighbor. Since then, a rich discourse has evolved ...

  11. Comparative analysis of surface power system architectures for human Mars exploration

    E-Print Network [OSTI]

    Cooper, Chase Allen

    2009-01-01T23:59:59.000Z

    This thesis provides a comprehensive analysis of surface power generation and energy storage architectures for human Mars surface missions, including tracking and non-tracking photovoltaic power generation, nuclear fission ...

  12. Wednesday, March 14, 2007 MARS SEDIMENTS AND GEOCHEMISTRY: VIEW FROM THE SURFACE

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Golombek M. Parker T. Squyres S. W. Sullivan R. Structure and Sedimentology of the Western Margin of Erebus Crater, Meridiani Planum, Mars [#2235] The structure, stratigraphy and sedimentology of two outcrops

  13. Notes et tudes conomiques n30, Mars 2008 LA GESTION DES RISQUES EN AGRICULTURE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    33 Notes et études économiques ­ n°30, Mars 2008 LA GESTION DES RISQUES EN AGRICULTURE De la rurale et gestion, Agrocampus Rennes ** Chargés de mission au bureau de l'analyse économique et de la la gestion des risques en agriculture #12;34 Notes et études économiques ­ n°30, Mars 2008 L

  14. A Flow-Channel Analysis for the Mars Hopper

    SciTech Connect (OSTI)

    W. Spencer Cooley

    2013-02-01T23:59:59.000Z

    The Mars Hopper is an exploratory vehicle designed to fly on Mars using carbon dioxide from the Martian atmosphere as a rocket propellant. The propellent gasses are thermally heated while traversing a radioisotope ther- mal rocket (RTR) engines core. This core is comprised of a radioisotope surrounded by a heat capacitive material interspersed with tubes for the propellant to travel through. These tubes, or flow channels, can be manu- factured in various cross-sectional shapes such as a special four-point star or the traditional circle. Analytical heat transfer and computational fluid dynamics (CFD) anal- yses were performed using flow channels with either a circle or a star cross- sectional shape. The nominal total inlet pressure was specified at 2,805,000 Pa; and the outlet pressure was set to 2,785,000 Pa. The CO2 inlet tem- perature was 300 K; and the channel wall was 1200 K. The steady-state CFD simulations computed the smooth-walled star shapes outlet temper- ature to be 959 K on the finest mesh. The smooth-walled circles outlet temperature was 902 K. A circle with a surface roughness specification at 0.01 mm gave 946 K and at 0.1 mm yielded 989 K. The The effects of a slightly varied inlet pressure were also examined. The analytical calculations were based on the mass flow rates computed in the CFD simulations and provided significantly higher outlet temperature results while displaying the same comparison trends. Research relating to the flow channel heat transfer studies was also done. Mathematical methods to geometrically match the cross-sectional areas of the circle and star, along with a square and equilateral triangle, were derived. A Wolfram Mathematica 8 module was programmed to analyze CFD results using Richardson Extrapolation and calculate the grid convergence index (GCI). A Mathematica notebook, also composed, computes and graphs the bulk mean temperature along a flow channels length while the user dynam- ically provides the input variables, allowing their effects on the temperature to be more easily observed.

  15. MARS15 Code Developments Driven by the Intensity Frontier Needs

    E-Print Network [OSTI]

    Mokhov, N V; Rakhno, I L; Striganov, S I; Tropin, I S; Eidelman, Yu I; Aarnio, P; Gudima, K K; Konobeev, A Yu

    2014-01-01T23:59:59.000Z

    The MARS15(2012) is the latest version of a multi-purpose Monte-Carlo code developed since 1974 for detailed simulation of hadronic and electromagnetic cascades in an arbitrary 3-D geometry of shielding, accelerator, detector and spacecraft components with energy ranging from a fraction of an electronvolt to 100 TeV. Driven by needs of the intensity frontier projects with their Megawatt beams, e.g., ESS, FAIR and Project X, the code has been recently substantially improved and extended. These include inclusive and exclusive particle event generators in the 0.7 to 12 GeV energy range, proton inelastic interaction modeling below 20 MeV, implementation of the EGS5 code for electromagnetic shower simulation at energies from 1 keV to 20 MeV, stopping power description in compound materials, new module for DPA calculations for neutrons from a fraction of eV to 20-150 MeV, user-friendly DeTra-based method to calculate nuclide inventories, and new ROOT-based geometry.

  16. Vehicle configuration options using nuclear propulsion for Mars missions

    SciTech Connect (OSTI)

    Emrich, W.J. Jr. (NASA-Marshall Space Flight Center, Huntsville, Alabama 35812 (United States))

    1993-01-20T23:59:59.000Z

    The solid core nuclear thermal rocket (NTR) provides an attractive means of providing the propulsive force needed to accomplish a wide array of space missions. With its factor of two or more advantage in Isp over chemical engines, nuclear propulsion provides the opportunity to accomplish space missions which are impractical by other means. This paper focuses on the use of a nuclear thermal rocket to accomplish a variety of space missions with emphasis on the manned Mars mission. The particle bed reactor (PBR) type nuclear engine was chosen as the baseline engine used to conduct the present study because of its perceived versatility over other nuclear propulsion systems in conducting a wide variety of tasks. This study baselines a particle bed reactor engine with an engine thrust-to-weight ratio ([similar to]11.5) and a specific impulse of [similar to]950 s. It is shown that a PBR engine of this type will offer distinct advantages over the larger and heavier NERVA type nuclear engines.

  17. Radiological Contingency Planning for the Mars Science Laboratory Launch

    SciTech Connect (OSTI)

    Paul Guss, Robert Augdahl, Bill Nickels, Cassandra Zellers

    2008-04-16T23:59:59.000Z

    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 NSTecs 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.

  18. Ion escape from Mars as a function of solar wind conditions: A statistical study Hans Nilsson a,*, Ella Carlsson a

    E-Print Network [OSTI]

    California at Berkeley, University of

    . On average there must be a pressure balance between the outer force, the solar wind dynamic pressureIon escape from Mars as a function of solar wind conditions: A statistical study Hans Nilsson a Available online 13 March 2009 Keywords: Ionosphere Mars, Atmosphere Solar wind a b s t r a c

  19. 1 Managed by UT-Battelle for the U.S. Department of Energy MERIT Videoconference 11 Mar 2009

    E-Print Network [OSTI]

    McDonald, Kirk

    1 Managed by UT-Battelle for the U.S. Department of Energy MERIT Videoconference 11 Mar 2009 Neutrino Factory Cryostat 1 Concept V.B. Graves MERIT Videoconference Mar 11, 2009 #12;2 Managed by UT-Battelle Containment encompasses nozzle tip #12;3 Managed by UT-Battelle for the U.S. Department of Energy MERIT

  20. Seasonal melting and the formation of sedimentary rocks on Mars, with predictions for the Gale Crater mound

    E-Print Network [OSTI]

    Kite, Edwin

    Street, Suite 205, Boulder, CO 80301, USA e Department of Earth and Planetary Science, University distribution of sedimentary rocks. The global distribution of snowmelt has maxima in Valles Marineris. The pattern of sedimentary rocks on Mars is most consistent with a model Mars paleoclimate that only rarely

  1. OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...

    Office of Scientific and Technical Information (OSTI)

    Mars Science Laboratory Curiosity - ChemCam OSTIblog Comment policy We welcome your comments and your submission of web links to the OSTIblog and look forward to civil discourse on...

  2. Challenges for coring deep permafrost on earth and mars

    SciTech Connect (OSTI)

    Pfiffner, Susan Marie [ORNL; Onstott, Tullis [Princeton University; Ruskeeniemi, T [Geological Survey of Finland; Talikka, M [Geological Survey of Finland; Bakermans, Corien [Michigan State University, East Lansing; McGown, Daniel [Princeton University; Chan, E. [Princeton University; Johnson, Adam [Indiana University; Phelps, Tommy Joe [ORNL; Le Puil, M [University of Tennessee, Knoxville (UTK); Difurio, Sarah A [ORNL; Pratt, L.M. [Indiana University; Stotler, R [University of Waterloo, Canada; Frape, S [University of Waterloo, Canada; Telling, J [University of Toronto; Lollar, Barbara Sherwood [University of Toronto; Neill, I [Wolfden Resources, Inc., Ontario, Canada; Zerbin, B [Major Drilling Group International, Inc., Manitoba, Canada

    2008-01-01T23:59:59.000Z

    A scientific drilling expedition to the High Lake region of Nunavut, Canada, was recently completed with the goals of collecting samples and delineating gradients in salinity, gas composition, pH, pe, and microbial abundance in a 400 m thick permafrost zone and accessing the underlying pristine subpermafrost brine. With a triple-barrel wireline tool and the use of stringent quality assurance and quality control (QA/QC) protocols, 200 m of frozen, Archean, mafic volcanic rock was collected from the lower boundary that separates the permafrost layer and subpermafrost saline water. Hot water was used to remove cuttings and prevent the drill rods from freezing in place. No cryopegs were detected during penetration through the permafrost. Coring stopped at the 535 m depth, and the drill water was bailed from the hole while saline water replaced it. Within 24 hours, the borehole iced closed at 125 m depth due to vapor condensation from atmospheric moisture and, initially, warm water leaking through the casing, which blocked further access. Preliminary data suggest that the recovered cores contain viable anaerobic microorganisms that are not contaminants even though isotopic analyses of the saline borehole water suggests that it is a residue of the drilling brine used to remove the ice from the upper, older portion of the borehole. Any proposed coring mission to Mars that seeks to access subpermafrost brine will not only require borehole stability but also a means by which to generate substantial heating along the borehole string to prevent closure of the borehole from condensation of water vapor generated by drilling.

  3. MARS14 simulation of Fermilab 120-GeV beam dumps

    SciTech Connect (OSTI)

    Nikolai V. Mokhov

    2003-04-09T23:59:59.000Z

    To estimate groundwater activation around the Fermilab Switchyard, Meson Target Train and M03 Meson beam dumps at 120 GeV, express MARS14 [1] simulations have been performed. A proton beam RMS spot size is {sigma}{sub x}={sigma}{sub y}=1 cm in the first two cases, while {sigma}{sub x}={sigma}{sub y}=2 cm for M03. Calculated are star density distributions (above 50 MeV) normalized per one incident proton. The configurations proposed by Chuck Brown have been implemented into the MARS code.

  4. Hydrothermal formation of Clay-Carbonate alteration assemblages in the Nili Fossae region of Mars

    E-Print Network [OSTI]

    Brown, Adrian J; Baldridge, Alice M; Crowley, James K; Bridges, Nathan T; Thomson, Bradley J; Marion, Giles M; Filho, Carlos R de Souza; Bishop, Janice L

    2014-01-01T23:59:59.000Z

    The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) has returned observations of the Nili Fossae region indicating the presence of Mg- carbonate in small (characterize these carbonate-bearing units. We applied absorption band mapping techniques to investigate a range of possible phyllosilicate and carbonate minerals that could be present in the Nili Fossae region. We also describe a clay-carbonate hydrothermal alteration mineral assemblage in the Archean Warrawoona Group of Western Australia that is a potential Earth analog to the Nili Fossae carbonate-bearing rock units. We discuss the geological and biological implications for hydrothermal processes on Noachian Mars.

  5. Radiation dose estimates for typical piloted NTR lunar and Mars mission engine operations

    SciTech Connect (OSTI)

    Schnitzler, B.G. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Borowski, S.K. (National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center)

    1991-01-01T23:59:59.000Z

    The natural and manmade radiation environments to be encountered during lunar and Mars missions are qualitatively summarized. The computational methods available to characterize the radiation environment produced by an operating nuclear propulsion system are discussed. Mission profiles and vehicle configurations are presented for a typical all-propulsive, fully reusable lunar mission and for a typical all-propulsive Mars mission. Estimates of crew location biological doses are developed for all propulsive maneuvers. Post-shutdown dose rates near the nuclear engine are estimated at selected mission times. 15 refs., 4 figs.

  6. Mapping analysis of scaffold/matrix attachment regions (s/MARs) from two different mammalian cell lines

    SciTech Connect (OSTI)

    Pilus, Nur Shazwani Mohd; Ahmad, Azrin; Yusof, Nurul Yuziana Mohd [School of Bioscience and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia); Johari, Norazfa [Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia)

    2014-09-03T23:59:59.000Z

    Scaffold/matrix attachment regions (S/MARs) are potential element that can be integrated into expression vector to increase expression of recombinant protein. Many studies on S/MAR have been done but none has revealed the distribution of S/MAR in a genome. In this study, we have isolated S/MAR sequences from HEK293 and Chinese hamster ovary cell lines (CHO DG44) using two different methods utilizing 2 M NaCl and lithium-3,5-diiodosalicylate (LIS). The isolated S/MARs were sequenced using Next Generation Sequencing (NGS) platform. Based on reference mapping analysis against human genome database, a total of 8,994,856 and 8,412,672 contigs of S/MAR sequences were retrieved from 2M NaCl and LIS extraction of HEK293 respectively. On the other hand, reference mapping analysis of S/MAR derived from CHO DG44 against our own CHO DG44 database have generated a total of 7,204,348 and 4,672,913 contigs from 2 M NaCl and LIS extraction method respectively.

  7. Aust. J. Mar. Freshw. Res., 1984, 35, 119-28 Aromatic Hydrocarbons in Waters of

    E-Print Network [OSTI]

    Canberra, University of

    Aust. J. Mar. Freshw. Res., 1984, 35, 119-28 Aromatic Hydrocarbons in Waters of Port Phillip Bay of aromatic hydrocarbons in coastal waters, using solvent extraction and fluorescence emission analysis, shows and the Yarra River estuary. Introduction Pollution of the marine environment by petroleum hydrocarbons

  8. L3 Informatique Automates et langages formels 4 mars 2009 TD 5 : Automates `a pile

    E-Print Network [OSTI]

    Schmitz, Sylvain

    L3 Informatique Automates et langages formels 4 mars 2009 TD 5 : Automates `a pile Exercice 1 (Exemples d'automates `a pile). Donner un automate `a pile A = Q, , Z, T, q0, z0, F pour chacun des trois pile. Montrer que l'on peut construire un automate `a pile A ´equivalent avec une relation de

  9. China's waste could be treasure for Kyoto scheme 01 Mar 2006 12:36:11 GMT

    E-Print Network [OSTI]

    Columbia University

    China's waste could be treasure for Kyoto scheme 01 Mar 2006 12:36:11 GMT Source: Reuters By Stuart Penson COPENHAGEN, March 1 (Reuters) - Hundreds of rubbish landfill sites across China have vast, said Lu Guoqiang, an official at China's state Environmental Protection Administration. "China has 700

  10. Mars long has been considered a cold, dead planet.However,recent reports of methane

    E-Print Network [OSTI]

    Manning, Craig

    , and not necessarily just methane-pro- ducing organisms. However,if these environments were found not to be inhabited as from the thermal pro- cessing of complex organic remnants of past life (thermogenesis). In the first (ethane,propane,butane). On Mars, more shallowly buried organic material from putative past life could

  11. Photoelectrons on closed crustal field lines at Mars Matthew Trantham,1

    E-Print Network [OSTI]

    California at Berkeley, University of

    with the neutral atmosphere. Due to their energization from the pickup process while in the solar wind, they create with the EUV solar radiation proxy, adjusted for the SunMars distance and local solar zenith angle. The state by the solar wind [Luhmann and Kozyra, 1991]. Ionospheric outflow can also be an important loss mechanism

  12. WERE AQUEOUS RIPPLES ON MARS FORMED BY FLOWING BRINES? MICHAEL P. LAMB, JOHN P. GROTZINGER

    E-Print Network [OSTI]

    WERE AQUEOUS RIPPLES ON MARS FORMED BY FLOWING BRINES? MICHAEL P. LAMB, JOHN P. GROTZINGER are not observed. Recent thermodynamic modeling indicates that these brines could have had higher densities (by up whether ripples could have been stable bed forms under flowing Martian brines. To this end, we compiled

  13. Project EARTH-12-BW2: An experimental study of the accretion and differentiation of Mars

    E-Print Network [OSTI]

    Henderson, Gideon

    Project EARTH-12-BW2: An experimental study of the accretion and differentiation of Mars Supervisor: Professor B J Wood Recent research has shown that the Earth accreted and differentiated over a time period of 30-40 M.yr and that Earth became more oxidised as it grew. Stable continental crust

  14. The spiral troughs of Mars as cyclic steps Isaac B. Smith,1

    E-Print Network [OSTI]

    Spiga, Aymeric

    The spiral troughs of Mars as cyclic steps Isaac B. Smith,1 John W. Holt,1 Aymeric Spiga,2 Alan D to estimate the rate of upstream migration caused by katabatic winds for the spiral troughs. Citation: Smith are constructional features, having migrated northward during deposition since their onset [Smith and Holt, 2010

  15. Thursday, March 15, 2007 POSTER SESSION II: MARS SEDIMENTS AND GEOCHEMISTRY: ANALOGS AND MINERALOGY

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Thursday, March 15, 2007 POSTER SESSION II: MARS SEDIMENTS AND GEOCHEMISTRY: ANALOGS AND MINERALOGY D. L. Geochemical and Mineralogical Analysis of a "Simple" Evaporite with Organic Carbon and Colorado provides a setting with chemical and mineralogical characteristics relevant to what may be found

  16. Future Agriculture When: 29th of Mars 2012, 13.0014.30

    E-Print Network [OSTI]

    Future Agriculture When: 29th of Mars 2012, 13.0014.30 Where: Loftets Hrsal, Duhrevgen 8, Ultuna.magnusson@slu.se). The seminar will be filmed and posted on the Future Agriculture website: www.slu.se/futureagriculture. Future Agriculture livestock, crops and land use, is a research pro- gramme developed at the Swedish University

  17. Earth Planets Space, 64, 113120, 2012 Upper ionosphere of Mars is not axially symmetrical

    E-Print Network [OSTI]

    Gurnett, Donald A.

    Earth Planets Space, 64, 113­120, 2012 Upper ionosphere of Mars is not axially symmetrical E to the ionosphere providing momentum and energy transfer to the upper layers of the ionospheric plasma. While dependence rather closely follow the Chapman model (Gurnett et al., 2008; Morgan et al., 2008; Withers, 2009

  18. Revue de presse ANGLAIS Semaine du 22 au 28 mars 2010

    E-Print Network [OSTI]

    Rennes, Universit de

    Revue de presse ANGLAIS Semaine du 22 au 28 mars 2010 Time March 22, 2010 MEDIA Twitter and TV: How Social Media Is Helping Old Media (By Kelly Haffermann) : A new medium gives an old one a lift, as TV fans gather around the Twittercooler. SOCIETY How Millennials Perceive a New Generation Gap (By

  19. Catal Espaol English Canons i talussos profunds en els MARS Mediterrani i Cantbric: des de la

    E-Print Network [OSTI]

    Martin, Daniel

    Recursos Marins Renovables de l'Institut de Cincies del Mar del CSIC a Barcelona i el GRC d'estudi de les transferncies de matria i energia en l'oce i en processos fsics del fons mar, en biologia transferncies de matria i energia cap l'ecosistema profund. Des del punt de vista biolgic, al Cantbric es

  20. J. Mar. Biol. Ass. U.K. (2007), 87, 17851790 Printed in the United Kingdom

    E-Print Network [OSTI]

    Ilan, Micha

    2007-01-01T23:59:59.000Z

    activity (mainly inhibition of Escherichia coli growth) or ichthyotoxicity assays, during the last twoJ. Mar. Biol. Ass. U.K. (2007), 87, 17851790 Printed in the United Kingdom Journal of the Marine with extracts of Niphates rowi were eaten by both wrasse species. INTRODUCTION Of all the marine invertebrates

  1. hal-00137243,version1-19Mar2007 High shock release in ultrafast laser irradiated metals

    E-Print Network [OSTI]

    Boyer, Edmond

    hal-00137243,version1-19Mar2007 High shock release in ultrafast laser irradiated metals: Scenario matter exposed to subpicosecond near infrared pulsed laser radiation. We point out to the role of strong of material exceeding the specific energy required for melting is reported for copper and aluminum

  2. Early Mars hydrology: 2. Hydrological evolution in the Noachian and Hesperian epochs

    E-Print Network [OSTI]

    Early Mars hydrology: 2. Hydrological evolution in the Noachian and Hesperian epochs Jeffrey C, before a hydrologic and climatic transition in the late Noachian led to a decrease in erosion rates the temporal evolution of Martian groundwater hydrology during the Noachian and early Hesperian epochs using

  3. STA 414/2104 Mar 25, 2010 k-means clustering

    E-Print Network [OSTI]

    Reid, Nancy

    STA 414/2104 Mar 25, 2010 k-means clustering km15 = kmeans(x[g==0,],5) km25 = kmeans(x[g==1(mark kmeans with 5 cluster 4 -2-10123 kmeans with 2 cluster centers x1 x2 -2 -1 0 1 2 3 4 -2-10123 kmeans with 5 cluster

  4. Thursday, March 26, 2009 POSTER SESSION II: MARS ANALOGS: CHEMICAL AND PHYSICAL

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Amorphous Silicates in Interaction with Carbon Dioxyde [#1755] In situ infrared spectroscopy and X. Measurements of Dielectric Properties of Mars Analog Soils with Variable Temperature and Moisture Content [#2189] We performed impedance spectroscopy of various martian analog soils, with varying temperature

  5. American Institute of Aeronautics and Astronautics Affordable Human Moon and Mars Exploration through

    E-Print Network [OSTI]

    de Weck, Olivier L.

    is directly relevant to the exploration of Mars. After systematic qualitative and quantitative analysis, two architectures were chosen for further analysis based on overall mission mass, mission risk. Quantitative analysis of this commonality penalty shows a modest growth of Initial Mass in LEO, which appears

  6. Organisation of the soil mantle in tropical southeastern Brazil (Serra do Mar)

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 Organisation of the soil mantle in tropical southeastern Brazil (Serra do Mar) in relation-900 Sao Paulo SP, Brazil And INRA-ENSA. Laboratoire des sciences du sol 65 rue de St Brieuc 35042 RennesORSTOM - Instituto de geociencias - DGG USP C.P. 11 348 Cep: 05 422-970 Sao Paulo SP, Brazil Correspondence

  7. JOURNAL DE PHYSIQUE Colloque Cl, Suppl6ment au n03, Tome 49, Mars 1988

    E-Print Network [OSTI]

    Boyer, Edmond

    range can be observed as well as a variety of nearby secondary lines. The telescope mirror canJOURNAL DE PHYSIQUE Colloque Cl, Suppl6ment au n03, Tome 49, Mars 1988 SOLAR PHYSICS FROM SPACELAB systematic observations of the solar atmosphere at high resolution and to measure specific global properties

  8. Carbon geochemistry of serpentinites in the Lost City Hydrothermal System (30N, MAR)

    E-Print Network [OSTI]

    Gilli, Adrian

    Massif (Mid-Atlantic Ridge, 30N) was exam- ined to characterize carbon sources and speciation in oceanic. The speciation of carbon de- pends on the chemical and physical conditions prevailing in the reservoir, and itsCarbon geochemistry of serpentinites in the Lost City Hydrothermal System (30N, MAR) Ade

  9. Atmosphere-crust coupling and carbon sequestration on the young Mars Professor Martin R. Lee1

    E-Print Network [OSTI]

    Guo, Zaoyang

    Atmosphere-crust coupling and carbon sequestration on the young Mars Professor Martin R. Lee1 *, Dr the idea that CO2 was `scrubbed' by precipitation of carbonate minerals within the planet's crust - a reaction termed `carbonation'. This project will seek evidence for carbonation by analysis of martian

  10. ccsd-00000262(version1):26Mar2003 Looking back at superfluid helium

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ccsd-00000262(version1):26Mar2003 Looking back at superfluid helium S´ebastien Balibar Laboratoire condensation in several gases, it is interesting to look back at some properties of superfluid helium. After and vortices in the existence of a critical velocity in superfluid helium. I finally discuss the existence

  11. Multiaxial stress effects on fatigue behavior of filled natural rubber W.V. Mars a

    E-Print Network [OSTI]

    Fatemi, Ali

    Multiaxial stress effects on fatigue behavior of filled natural rubber W.V. Mars a , A. Fatemi b, * a Cooper Tire and Rubber Company, Findlay, OH 45840, USA b Mechanical, Industrial and Manufacturing in filled natural rubber based on experiments using short thin-walled cylindrical specimens subjected

  12. democrite-00023911,version1-18Mar2005 Analogy between free electron laser

    E-Print Network [OSTI]

    Boyer, Edmond

    democrite-00023911,version1-18Mar2005 Analogy between free electron laser and channeling by crystal, which governs a free electron laser or inverse free electron laser at high gain, is analogous-tapered free electron laser. This analogy is different from the well-known one between channeling and undulator

  13. Jun May Apr Mar Service Center Answer Time 85% -8% 93% 91% 92% 92% 90+%

    E-Print Network [OSTI]

    Webb, Peter

    Customer Satisfaction (In Development) Process Jun May Apr Mar Preventive Maintenance - FLS 88% +2% 86% 97% 87% 91% 1 Preventive Maintenance - Non-FLS 79% -9% 88% 79% 79% 77% 90+% Custodial Projects Completed On-Time 21% - 85+% Elevator Entrapments 8 Cleanliness Assessments (In Development) * Preventive

  14. tice sites of calcium carbonate and affect Mars' soil geochemistry, and calcium carbonate can

    E-Print Network [OSTI]

    Kounaves, Samuel P.

    tice sites of calcium carbonate and affect Mars' soil geochemistry, and calcium carbonate can sample. 18. Estimation of the concentration of calcium carbonate in the sample is uncertain because qualification model (17). Other carbonates have decomposition temperatures that are lower than that of calcite

  15. JOURNAL D E PHYSIQUE Colloque C1, supplement au no 3, Tome 48, mars 1987

    E-Print Network [OSTI]

    Boyer, Edmond

    , artificial ice frozen from distilled water, monocrystalline glacial ice, bubbly lake ice and sea ice [2JOURNAL D E PHYSIQUE Colloque C1, supplement au no 3, Tome 48, mars 1987 ELASTIC CONSTANTS OF ICE of the elastic constants of ice Ih in the full pressure range of phase stability 0 - 2.8 kbar. The percentage

  16. N Mistry NSF Site Review Mar.5, 2002 1 The CESR-c Wiggler

    E-Print Network [OSTI]

    -LINE SUPERCON 0.030 INCH #12;N Mistry NSF Site Review Mar.5, 2002 6 Each pole & coil forms an integral unit. The coil is wound around a pole and the epoxy cured in a fixture using the iron pole as an integral part beam energies. Trim coils are included for the end poles of each wiggler module to obtain the proper

  17. Dr. John Slough "Rapid Manned Mars Mission with a Propagating Magnetic Wave

    E-Print Network [OSTI]

    Shepherd, Simon

    Dr. John Slough MSNW "Rapid Manned Mars Mission with a Propagating Magnetic Wave Plasma Accelerator" For man to venture forth into the solar system, a radically different propulsion system must be envisioned problem. This is accomplished by employing a travelling magnetic wave accelerator to accelerate

  18. TERRESTRIAL ROCK VARNISH: A KEY TO UNDERSTANDING THE SURFACE COMPOSITION OF MARS. J. G. Ward1

    E-Print Network [OSTI]

    Kirkland, Laurel

    TERRESTRIAL ROCK VARNISH: A KEY TO UNDERSTANDING THE SURFACE COMPOSITION OF MARS. J. G. Ward1 , L produces a strong spectral band contrast. This also gives varnish its shiny appearance. On Earth rock varnish may have a microbial origin [3]. Clays are transported from an external source and deposited

  19. hal-00264040,version1-13Mar2008 An Ant-Based Model for Multiple Sequence

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    hal-00264040,version1-13Mar2008 An Ant-Based Model for Multiple Sequence Alignment Fr sequence alignment is a key process in today's biol- ogy, and finding a relevant alignment of several sequences is much more challenging than just optimizing some improbable evaluation functions. Our approach

  20. arXiv:astro-ph/0512327v27Mar2006 Laboratory tests on dark energy

    E-Print Network [OSTI]

    Beck, Christian

    arXiv:astro-ph/0512327v27Mar2006 Laboratory tests on dark energy Christian Beck School of the currently observed dark energy in the universe is completely unclear, and many different theoretical models co-exist. Nevertheless, if dark energy is produced by vac- uum fluctuations then there is a chance

  1. ccsd-00021119,version1-17Mar2006 Light transport in cold atoms and thermal decoherence

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ccsd-00021119,version1-17Mar2006 Light transport in cold atoms and thermal decoherence G. Labeyrie, we investigate experimentally and the- oretically how coherent transport of light inside a cold motivated by astrophysical purposes, wave transport in opaque media was first analyzed through a detailed

  2. Outcrop-scale physical properties of Burns Formation at Meridiani Planum, Mars

    E-Print Network [OSTI]

    Outcrop-scale physical properties of Burns Formation at Meridiani Planum, Mars Amanda L. Nahm1 October 2007. [1] A rock mass rating (RMR) analysis was performed on an outcrop of Burns Formation conditions (RMR = 52). For present-day dry conditions, the rock mass has an in situ modulus of deformation (E

  3. Northsouth topographic slope asymmetry on Mars: Evidence for insolation-related erosion at high obliquity

    E-Print Network [OSTI]

    Head III, James William

    asymmetry. Specifically, we suggest that summertime melting of ground ice on pole-facing slopes occurred, asymmetric troughs in the polar cap deposits of Mars have been interpreted to be due to insolation derived from the gridded topo- graphic map are affected by strongly anisotropic errors. The slopes along

  4. Basal melting of snow on early Mars: A possible origin of some valley Michael H. Carr

    E-Print Network [OSTI]

    Head III, James William

    that valley networks could have formed as a result of basal melting of thick snow and ice deposits. Depending in part by basal melting of the south polar cap [Clifford, 1987], this cannot be the only mechanismBasal melting of snow on early Mars: A possible origin of some valley networks Michael H. Carr U. S

  5. The processing of electron density pro les from the Mars Express MARSIS topside sounder

    E-Print Network [OSTI]

    Gurnett, Donald A.

    how the ionospheric trace is inverted to give the electron density as a function of altitude, i. e) mode of the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) instrument, on board in the processes of acquiring the required data and inverting them to obtain the electron density pro le

  6. The ASU 100 Cities Project and the Mars Space Flight Facility (MSFF) are developing JEarth, a

    E-Print Network [OSTI]

    Hall, Sharon J.

    models - such as GTOPO30 ! Vector-based shapefiles, including geology, ecology, social and political.echo.eos.nasa.gov ! ASTER and GTOPO 30 DEMs and profile tools ! Incorporation of CAP LTER shapefiles for the 200 point available Mars data sets !Global datasets and individual images !Regional maps and mosaics !Shapefiles

  7. ccsd-00021948,version1-29Mar2006 Bose-Einstein condensates in fast rotation

    E-Print Network [OSTI]

    Boyer, Edmond

    ccsd-00021948,version1-29Mar2006 Bose-Einstein condensates in fast rotation S. Stock, B. Battelier of atomic Bose-Einstein condensates confined in quadratic or quartic potentials, and give an overview the physics of condensates containing a single vortex line. We then address the regime of fast rotation

  8. Lunar and Planetary Science Conference, 21st, Houston, TX, Mar. 12-16, 1990, Proceedings

    SciTech Connect (OSTI)

    Ryder, G.; Sharpton, V.L.; (Lunar and Planetary Institute, Houston, TX)

    1991-01-01T23:59:59.000Z

    The present conference on lunar and planetary science discusses the geology and geophysics of Venus; the lunar highlands and regolith; magmatic processes of the moon and meteorites; remote sensing of the moon and Mars; chondrites, cosmic dust, and comets; ammonia-water mixtures; and the evolution of volcanism, tectonics, and volatiles on Mars. Attention is given to volcanism on Venus, pristine moon rocks, the search for Crisium Basin ejecta, Apollo 14 glasses, lunar anorthosites, the sources of mineral fragments in impact melts 15445 and 15455, and argon adsorption in the lunar atmosphere. Also discussed are high-pressure experiments on magnesian eucrite compositions, the early results of thermal diffusion in metal-sulfide liquids, preliminary results of imaging spectroscopy of the Humorum Basin region of the moon, high-resolution UV-visible spectroscopy of lunar red spots, and a radar-echo model for Mars. Other topics addressed include nitrogen isotopic signatures in the Acapulco Meteorite, tridymite and maghemite formation in an Fe-SiO smoke, and the enigma of mottled terrain on Mars.

  9. MARS June 2012 Flight Data: Natural Background and Point Source Spectra

    SciTech Connect (OSTI)

    Stave, Sean C.; Dorow, Kevin E.; Glasgow, Brian D.; Benz, Jacob M.; Willett, Jesse A.

    2012-11-01T23:59:59.000Z

    Abstract This brief document describes the electronic data that were collected by the Multi-sensor Aerial Radiation Survey (MARS) detector in June 2012 while mounted onboard the RSL Bell-412 helicopter. A copy of the data is included as an electronic appendix.

  10. Enhancing the science return of Mars missions via sample preparation, robotic surface exploration and in orbit fuel production

    E-Print Network [OSTI]

    Lamamy, Julien-Alexandre, 1978-

    2004-01-01T23:59:59.000Z

    The future of Mars exploration is challenging from multiple points of view. To enhance their science return, future surface probes will most likely be equipped with complex Sample Preparation And Transfer (SPAT) facilities. ...

  11. Simultaneous ionospheric variability on Earth and Mars Michael Mendillo, Steven Smith, Joei Wroten, and Henry Rishbeth1

    E-Print Network [OSTI]

    Mendillo, Michael

    Simultaneous ionospheric variability on Earth and Mars Michael Mendillo, Steven Smith, Joei Wroten-planetary relations, photochemical ionospheres Citation: Mendillo, M., S. Smith, J. Wroten, H. Rishbeth, and D. Hinson

  12. ALGORITHMIC CLASSIFICATION OF DRAINAGE NETWORKS ON MARS AND ITS RELATION TO MARTIAN GEOLOGICAL UNITS. T. F. Stepinski1

    E-Print Network [OSTI]

    Vilalta, Ricardo

    ALGORITHMIC CLASSIFICATION OF DRAINAGE NETWORKS ON MARS AND ITS RELATION TO MARTIAN GEOLOGICAL locations covering 16 major geological units. The classification is quantitative and objective with an existing division into geological units. A morphological interpretation for this emergent classification

  13. arXiv:cond-mat/0503226v19Mar2005 Two Superconducting Phases in the d = 3 Hubbard Model

    E-Print Network [OSTI]

    Gozuacik, Devrim

    arXiv:cond-mat/0503226v19Mar2005 Two Superconducting Phases in the d = 3 Hubbard Model: Phase. The strong-coupling phase, on the other hand, has characteristics of BEC-type superconductivity, including

  14. FIRST STEP IN THEORETICAL APPROACH IN STUDY OF MARS AND TITAN ATMOSPHERES WITH AN INDUCTIVELY COUPLED PLASMA TORCH

    E-Print Network [OSTI]

    with the titan atmosphere (CH4-N2) unlike the Mars atmosphere (CO2-N2). We observe the creation of solid], one can obtain the molar fraction versus temperature. The composition of Mars is assumed to be 97% CO22, CO2 - , N2O, N2O3, N2O4, N2O5, N2O+, N3, NCN, NO2, NO2 - , NO3, O3 and the electrons

  15. Comparison of Space Propulsion Methods for a Manned Mission to Mars

    E-Print Network [OSTI]

    Guerra, A G C; Gil, P J S

    2015-01-01T23:59:59.000Z

    We undertake a comparison of the latest developments in propulsion technologies, for a manned mission to Mars. The main objective is to assess the possibility of reducing travel time keeping the mass at departure within bounds. For the sake of comparison we used representative systems of different state of the art or proposed technologies, from the chemical engine to the "Pure Electro-Magnetic Thrust" (PEMT) concept, using a nuclear engine proposed by Rubbia. A mission architecture is suggested, based on existing mission proposals to Mars, to estimate the mass budget that influences the performance of the propulsion system. The trajectory of the spacecraft is determined by a numerical integration of the equations of motion and a partial optimization procedure, for the interplanetary phase with continuous thrust, and by conics and instant manoeuvres in the regions of influence of the departure and arrival planets. Pareto curves of the duration of the mission and time of flight versus mass of mission are drawn....

  16. Development of a propulsion system and component test facility for advanced radioisotope powered Mars Hopper platforms

    SciTech Connect (OSTI)

    Robert C. O'Brien; Nathan D. Jerred; Steven D. Howe

    2011-02-01T23:59:59.000Z

    Verification and validation of design and modeling activities for radioisotope powered Mars Hopper platforms undertaken at the Center for Space Nuclear Research is essential for proof of concept. Previous research at the center has driven the selection of advanced material combinations; some of which require specialized handling capabilities. The development of a closed and contained test facility to forward this research is discussed within this paper.

  17. Dose calculations using MARS for Bremsstrahlung beam stops and collimators in APS beamline stations.

    SciTech Connect (OSTI)

    Dooling, J.; Accelerator Systems Division (APS)

    2010-11-01T23:59:59.000Z

    The Monte Carlo radiation transport code MARS is used to model the generation of gas bremsstrahlung (GB) radiation from 7-GeV electrons which scatter from residual gas atoms in undulator straight sections within the Advanced Photon Source (APS) storage ring. Additionally, MARS is employed to model the interactions of the GB radiation with components along the x-ray beamlines and then determine the expected radiation dose-rates that result. In this manner, MARS can be used to assess the adequacy of existing shielding or the specifications for new shielding when required. The GB radiation generated in the 'thin-target' of an ID straight section will consist only of photons in a 1/E-distribution up to the full energy of the stored electron beam. Using this analytical model, the predicted GB power for a typical APS 15.38-m insertion device (ID) straight section is 4.59 x 10{sup -7} W/nTorr/mA, assuming a background gas composed of air (Z{sub eff} = 7.31) at room temperature (293K). The total GB power provides a useful benchmark for comparisons between analytical and numerical approaches. We find good agreement between MARS and analytical estimates for total GB power. The extended straight section 'target' creates a radial profile of GB, which is highly peaked centered on the electron beam. The GB distribution reflects the size of the electron beam that creates the radiation. Optimizing the performance of MARS in terms of CPU time per incident trajectory requires the use of a relatively short, high-density gas target (air); in this report, the target density is {rho}L = 2.89 x 10{sup -2} g/cm{sup 2} over a length of 24 cm. MARS results are compared with the contact dose levels reported in TB-20, which used EGS4 for radiation transport simulations. Maximum dose-rates in 1 cc of tissue phantom form the initial basis for comparison. MARS and EGS4 results are approximately the same for maximum 1-cc dose-rates and attenuation in the photon-dominated regions; for thicker targets, however, the dose-rate no longer depends only on photon attenuation, as photoneutrons (PNs) begin to dominate. The GB radiation-induced photoneutron measurements from four different metals (Fe, Cu, W, and Pb) are compared with MARS predictions. The simulated dose-rates for beamline 6-ID are approximately 3-5 times larger than the measured values, whereas those for beamline 11-ID are much closer. Given the uncertainty in local values of pressure and Z, the degree of agreement between MARS and the PN measurements is good. MARS simulations of GB-induced radiation in and around the FOE show the importance of using actual pressure and gas composition (Z{sub eff}) to obtain accurate PN dose. For a beam current of 300 mA, extrapolating pressure data measured in previously published studies predicts an average background gas pressure of 27 nTorr. An average atomic number of Z{sub eff} = 4.0 is obtained from the same studies. In addition, models of copper masks presently in use at the APS are included. Simulations show that inclusion of exit masks make significant differences in both the radiation spatial distribution within the FOE, as well as the peak intensity. Two studies have been conducted with MARS to assess shielding requirements. First, dose levels in contact with the outside wall of the FOE are examined when GB radiation strikes Pb or W beam stops of varying transverse size within the FOE. Four separate phantom regions are utilized to measure the dose, two at beam elevation and two at the horizontal beam position. The first two phantoms are used for scoring FOE dose along the outside and back walls, horizontally; the second two collect dose on the roof and vertically on the back wall. In all cases, the beam stop depth is maintained at 30 cm. Inclusion of front end (FE) exit masks typically cause a 1-2 order-of-magnitude increase in the dose-rates relative to the case with no masks. Masks place secondary bremsstrahlung sources inside the FOE, and therefore they must be shielded appropriately. The MARS model does not fully account for all shielding present

  18. El Instituto de Ciencias del Mar y Limnologa, organiza el "Da Mundial del Agua 2012", un evento de Puertas Abiertas para celebrar "El Agua y la seguridad alimentara" tema

    E-Print Network [OSTI]

    Islas, Len

    El Instituto de Ciencias del Mar y Limnologa, organiza el "Da Mundial del Agua 2012", un evento AYALA-CASTAARES" INSTITUTO DE CIENCIAS DEL MAR Y LIMNOLOGA, UNAM PROGRAMA 09:30 - 09:35 Inauguracin y

  19. National Aeronautics and Space Administration www.nasa.gov

    E-Print Network [OSTI]

    Waliser, Duane E.

    . Airbags inflated around the lander to cushion the impact, and the lander bounced and rolled to a stop on Mars. Once the airbags deflated, the lander's "petals" opened, revealing the rover ready to raise its

  20. THE MARS HOPPER: AN IMPULSE DRIVEN, LONG RANGE, LONG-LIVED MOBILE PLATFORM UTILIZING IN-SITU MARTIAN RESOURCES

    SciTech Connect (OSTI)

    Robert C. O'Brien; Mark McKay; Brian Gross; JOnathan Webb

    2001-09-01T23:59:59.000Z

    The requirements for performance by planetary exploration missions are increasing. Landing at a single location to take data is no longer sufficient. Due to the increasing cost, the missions that provide mobile platforms that can acquire data at displaced locations are becoming more attractive. Landers have also had limited range due to power limitations, limited lifetime of subsystems and the inability to negotiate rough terrain. The Center for Space Nuclear Research has designed an instrumented platform that can acquire detailed data at hundreds of locations during its lifetime - a Mars Hopper. The Mars Hopper concept utilizes energy from radioisotopic decay in a manner different from any existing radioisotopic power sourcesas a thermal capacitor. By accumulating the heat from radioisotopic decay for long periods, the power of the source can be dramatically increased for short periods. Thus, a radioisotopic thermal rocket (RTR) is possible. The platform will be able to hop from one location to the next every 5-7 days with a separation of 5-10 km per hop. Each platform will weigh around 50 kgs unfueled which is the condition at deployment. Consequently, several platforms may be deployed on a single launch from Earth. With a lifetime estimated at 5-7 years, the entire surface of Mars can be mapped in detail by a couple dozen platforms. In addition, Hoppers can collect samples and deliver them to the Mars Science Laboratory for more detailed analysis. The design and performance of the Mars Hopper will be discussed.

  1. developed and manufactured at the Laboratory, has enabled Curiosity,

    E-Print Network [OSTI]

    of the 2011 Fukushima Nuclear Accident" delivered by Dr. Mike Weightman, UK Chief Inspector of Nuclear civilian nuclear power generation. The technical themes for the Plutonium Futures 2012 Conference spanned condensed matter physics; detection and analysis; materials science; nuclear fuel cycle; and environmental

  2. Powering Curiosity: Multi-Mission Radioisotope Thermoelectric Generators |

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR - T enAmountCammie Croft Senior Advisor, DirectorDepartment

  3. Yes, This is Rocket Science: EM Employee Eagerly Examines Curiosity,

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment of EnergyThePatricia2012) | Department of

  4. RTG-History, the Curiosity, Voyager, and New Horizons

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnicalPurchase, Delivery, andSmart SensorsData -Madison

  5. Powering Curiosity: Multi-Mission Radioisotope Thermoelectric Generators |

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked QuestionsDepartmentGas and|Hours(5-Unit) AreaEnergyofN E R G Y

  6. Owen, R.B., Sandhu, N., 2000. Heavy metal accumulation and anthro-pogenic impacts on Tolo Harbour, Hong Kong. Mar. Pollut. Bull. 40,

    E-Print Network [OSTI]

    Yu, K.N.

    of Korean Costal water. Report of Marine Environmen- tal Monitoring and assessment Technology, Seoul. Development of anoxia during the Holocene fresh-brackish water transition in the Baltic Sea. Mar. Geol. 177 s of PAHs in sediments from Masan Bay, Korea. Mar. Pollut. Bull. 50, 319326. Yokoyama, H., 1995

  7. Proceedings of the US Hydrographic Conference, New Orleans, LA, 25-28 Mar 2013 WATER-COLUMN VARIABILITY ASSESSMENT FOR UNDERWAY PROFILERS

    E-Print Network [OSTI]

    New Hampshire, University of

    Proceedings of the US Hydrographic Conference, New Orleans, LA, 25-28 Mar 2013 1 WATER trials and from analysis of existing data sets are presented. #12;Proceedings of the US Hydrographic Conference, New Orleans, LA, 25-28 Mar 2013 2 Introduction The application of timely measurements of sound

  8. Downloaded 22 Mar 2001 to 157.182.50.14. Redistribution subject to AIP copyright, see http://ojps.aip.org/chaos/chocr.jsp Downloaded 22 Mar 2001 to 157.182.50.14. Redistribution subject to AIP copyright, see http://ojps.aip.org/chaos/chocr.jsp

    E-Print Network [OSTI]

    Showalter, Kenneth

    Downloaded 22 Mar 2001 to 157.182.50.14. Redistribution subject to AIP copyright, see http://ojps.aip.org/chaos/chocr.jsp #12;Downloaded 22 Mar 2001 to 157.182.50.14. Redistribution subject to AIP copyright, see http://ojps.aip.org/chaos/chocr.jsp #12;Downloaded 22 Mar 2001 to 157.182.50.14. Redistribution subject to AIP copyright, see http

  9. Mobile robots II; Proceedings of the Meeting, Cambridge, MA, Nov. 5, 6, 1987

    SciTech Connect (OSTI)

    Wolfe, W.J.; Chun, W.H.

    1988-01-01T23:59:59.000Z

    Topics discussed are autonomous vehicle guidance, three-dimensional systems, the Mars rover, motion analysis, and planning and navigation. Particular papers are presented on a real-time system architecture for a mobile robot, distributed scene analysis for autonomous road vehicle guidance, the vision system for a Mars rover, the recovery of motion parameters using optical flow, and Prolog-based world models for mobile robot navigation.

  10. La mujer y el amor en El mismo mar de todos los veranos, de Esther Tusquets

    E-Print Network [OSTI]

    Reed, Linnette Fourquet

    1985-01-01T23:59:59.000Z

    camo "pura anecdota, " camo algo curioso de 15 scalar pero no para ser tornado en serio. Si se une esto a la idea general de que todo producto creativo femenino era necesariamente de inferior calidad, se explicara en- tonces la sorpresa con que se... acogio a las nuevas escritoras de la talla de Carmen Laforet, Ana Mar&a Natute, ~ Marin Gaite. Estas no solo eran muy fertiles literariamente, sino que de- mostraron la calidad de su obra cuando, en ~tencia con el varon escritor, empezaron a ganar...

  11. Optimization of a Mu2e production solenoid heat and radiation shield using MARS15

    SciTech Connect (OSTI)

    Pronskikh, V.S.; Mokhov, N.V.; /Fermilab

    2011-02-01T23:59:59.000Z

    A Monte-Carlo study of several Mu2e Production Solenoid (PS) absorber (heat shield) versions using the MARS15 code has been performed. Optimizations for material as well as cost (amount of tungsten) have been carried out. Studied are such quantities as the number of displacements per atom (DPA) in the helium-cooled solenoid superconducting coils, power density and dynamic heat load in various parts of the PS and its surrounding structures. Prompt dose, residual dose, secondary particle flux are also simulated in the PS structures and the experimental hall. A preliminary choice of the PS absorber design is made on the ground of these studies.

  12. Extensibility of the fission surface power (FSP) system from the moon to Mars

    SciTech Connect (OSTI)

    Poston, David Irvin [Los Alamos National Laboratory

    2011-01-28T23:59:59.000Z

    Fission reactors have great near-term potential to power human and robotic missions/outposts on the surface of the Moon and Mars (and potentially other planets, moons, and asteroids). The ability to provide a power-rich environment that is independent of solar intensity, nights, dust storms, etc., is of significant (perhaps enabling) importance to the further expansion of humans into our solar system. NASA's Reference Fission Surface Power (FSP) System is a 40 kWe system that has been primarily designed for lunar applications. This paper examines the extensibility of the FSP design and technology for potential missions on Mars. Possible impacts include the effects of changes in heat sink, gravity, day-night cycles, mission transit time, communication delay, and the chemistry of the regolith and atmosphere. One of the biggest impacts might be differences in the potential utilization of in-situ materials for shielding. Another major factor is that different missions will likely require different performance requirements, e.g. power, lifetime and mass. This paper concludes that the environmental differences between potential mission locations will not require significant changes in design and technologies, unless performance requirements for a specific mission are substantially different than those adopted for the FSP The primary basis for this conclusion is that the FSP has been designed with robust materials and design margins.

  13. Lunar and Planetary Science Conference, 20th, Houston, TX, Mar. 13-17, 1989, Proceedings

    SciTech Connect (OSTI)

    Sharpton, V.L.; Ryder, G.

    1990-01-01T23:59:59.000Z

    Topics discussed include the petrology and geochemistry of the moon, the geology of the moon, lunar regolith processes and resources, the petrology and geochemistry of achondrites, comets and interplanetary dust, shock and terrestrial cratering, the geology of Mars, and the geology of Venus. Papers are presented on silicate liquid immiscibility in isothermal crystallization experiments; highly evolved and ultramafic lithologies from Apollo 14 soils; the relationship between orbital, earth-based, and sample data for lunar landing sites; and the volcanotectonic evolution of Mare Frigoris. Attention is also given to glass variants and multiple HASP trends in Apollo 14 regolith breccias, the characterization of lunar ilmenite resources, the U-Th-Pb systematics of the Estherville mesosiderite, and the extraterrestrial halogen and sulfur contents of the stratosphere. Other papers are on argon-40/argon-39 dating of impact craters; the outliers of dust along the southern margin of the Tharsis region, Mars; and the geology of southern Guinevere Planitia, Venus, based on analyses of Goldstone radar data.

  14. General Physics II Exam 2 -Chs. 1921 -Circuits, Magnetism, EM Induction -Mar. 4, 2013 Name Rec. Instr. Rec. Time

    E-Print Network [OSTI]

    Wysin, Gary

    General Physics II Exam 2 - Chs. 1921 - Circuits, Magnetism, EM Induction - Mar. 4, 2013 Name Rec. b. current through R. c. potential energy of charges. 2. (3) When three resistors RA, RB, and RC are wired in series to an ideal battery, a. they have the same currents. b. they have currents inversely

  15. 05Mar09 ANALYSISIn crisis, GE finds its deep bench not so magical By James B. Kelleher

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    05Mar09 ANALYSISIn crisis, GE finds its deep bench not so magical By James B. Kelleher not true." HANGING ON THE HUDSON At the heart of GE's training program is the Leadership Center faces its worst crisis in decades, its managers seem suddenly bereft of good ideas, its deep bench

  16. UNIT COSTS fot ARMY FACILITIES -MILITARY CONSTRUCTION PAX NEWSLETTER NO. 3.2.2, dated 30 Mar 2006

    E-Print Network [OSTI]

    US Army Corps of Engineers

    ENGLISH UNIT COSTS fot ARMY FACILITIES - MILITARY CONSTRUCTION PAX NEWSLETTER NO. 3.2.2, dated 30 Mar 2006 1. APPENDIX A - FACILITY UNIT COST TABLE (FOR FY08 and later MILCON, BRAC, IGPBS Projects Newsletter No. 3.2.2, 15 March 2005, and updates the Appendix A, Facility Unit Cost Table, Appendix C, Tri

  17. Problems #7, Math 311, Dr. M. Bohner. Mar 19, 2003. Due Apr 2, 1 pm. 138. Let A =

    E-Print Network [OSTI]

    Bohner, Martin

    Problems #7, Math 311, Dr. M. Bohner. Mar 19, 2003. Due Apr 2, 1 pm. 138. Let A = a b b c . Show by f(x, y, z) = (x2 +2y2 )e-(x2+y2) +zez . 147. In order to produce a box we have two materials

  18. Xavier Gr`acia _ Geometria Diferencial 2 _ Suplement d'`algebra _ 21 mar,c 2007* * 1

    E-Print Network [OSTI]

    Grcia, Xavier

    Xavier Gr`acia _ Geometria Diferencial 2 _ Suplement d'`algebra _ 21 mar,c 2007'o lineal "x:E manera s'obt'e una aplicaci'o linea* *l canSexemplesuinteressants,psobreose* *m que E t'e una base finita (ei). Llavors E*t'e l'anomenada base dual diverses q"uestions d'`algebra

  19. democrite-00025179,version2-16Mar2006 Role of isospin in the nuclear liquid-gas phase transition

    E-Print Network [OSTI]

    Boyer, Edmond

    democrite-00025179,version2-16Mar2006 Role of isospin in the nuclear liquid-gas phase transition C the thermodynamics of asymmetric nuclear matter using a mean-field approximation with a Skyrme effective interaction der Waals fluid [1]. As a matter of fact, it is recognized that symmetric nuclear matter should un

  20. in2p3-00082627,version2-26Mar2007 Interplay between QCD and nuclear responses.

    E-Print Network [OSTI]

    Boyer, Edmond

    in2p3-00082627,version2-26Mar2007 Interplay between QCD and nuclear responses. M. Ericson1,2 , G of the nuclear medium and its response to a scalar probe coupled to nucleons, such as the scalar meson responsible for the nuclear binding. The relation that we derive applies at the nucleonic as well

  1. ccsd-00021443,version1-29Mar2006 Implementation of float-float operators on graphics hardware

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ccsd-00021443,version1-29Mar2006 Implementation of float-float operators on graphics hardware Perpignan Cedex, France March 29, 2006 Abstract The Graphic Processing Unit (GPU) has evolved into a powerful and flexible processor. The latest graphic processors provide fully programmable vertex and pixel

  2. Mars outflow channels: A reappraisal of the estimation of water flow velocities from water depths, regional slopes, and channel floor

    E-Print Network [OSTI]

    Head III, James William

    of estimating water flow velocities in Martian outflow channels using equations based on the Darcy of the Manning equation should be replaced by the modern form or, preferably, by the Darcy-Weisbach equation channel systems on Mars have relied widely on various versions of the Manning equation. This has led

  3. Development of the Variable Atmosphere Testing Facility for Blow-Down Analysis of the Mars Hopper Prototype

    SciTech Connect (OSTI)

    Nathan D. Jerred; Robert C. O'Brien; Steven D. Howe; James E. O'Brien

    2013-02-01T23:59:59.000Z

    Recent developments at the Center for Space Nuclear Research (CSNR) on a Martian exploration probe have lead to the assembly of a multi-functional variable atmosphere testing facility (VATF). The VATF has been assembled to perform transient blow-down analysis of a radioisotope thermal rocket (RTR) concept that has been proposed for the Mars Hopper; a long-lived, long-ranged mobile platform for the Martian surface. This study discusses the current state of the VATF as well as recent blow-down testing performed on a laboratory-scale prototype of the Mars Hopper. The VATF allows for the simulation of Mars ambient conditions within the pressure vessel as well as to safely perform blow-down tests through the prototype using CO2 gas; the proposed propellant for the Mars Hopper. Empirical data gathered will lead to a better understanding of CO2 behavior and will provide validation of simulation models. Additionally, the potential of the VATF to test varying propulsion system designs has been recognized. In addition to being able to simulate varying atmospheres and blow-down gases for the RTR, it can be fitted to perform high temperature hydrogen testing of fuel elements for nuclear thermal propulsion.

  4. hal-00135292,version1-7Mar2007 Photovoltaic Probe of Cavity Polaritons in a Quantum Cascade Structure

    E-Print Network [OSTI]

    Boyer, Edmond

    hal-00135292,version1-7Mar2007 Photovoltaic Probe of Cavity Polaritons in a Quantum Cascade and a photonic mode of a planar microcavity has been detected by angle-resolved photovoltaic measure- ments polaritons in angle-resolved photovoltaic measurements, performed on a quan- tum cascade (QC) structure

  5. MGS MAG/ER observations at the magnetic pileup boundary of Mars: draping enhancement and low frequency waves

    E-Print Network [OSTI]

    California at Berkeley, University of

    MGS MAG/ER observations at the magnetic pileup boundary of Mars: draping enhancement and low Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA Received 26 November 2002; received in revised form 19 March 2003; accepted 24 April 2003 Abstract The magnetic pileup boundary (MPB) is a sharp

  6. The solar wind interaction with Mars: Recent progress and future directions The Sun has a powerful influence on planetary atmospheres.

    E-Print Network [OSTI]

    California at Berkeley, University of

    Editorial The solar wind interaction with Mars: Recent progress and future directions The Sun has field, because the solar wind can interact directly with the upper atmo- sphere. Neutral particles in the upper atmosphere are ionized by solar photons and through interactions with solar wind charged particles

  7. TRANSVERSE AEOLIAN RIDGES ON MARS: DISTRIBUTION, ORIENTATIONS, AND AGES. D.C. , M.R. Balme1

    E-Print Network [OSTI]

    Bourke, Mary C.

    TRANSVERSE AEOLIAN RIDGES ON MARS: DISTRIBUTION, ORIENTATIONS, AND AGES. D.C. Berman1 , M.R. Balme1 , M.C. Bourke1 , S. Rafkin3 , and J.R. Zimbelman2 , 1 Planetary Science Institute, 1700 E. Ft. Lowell' [1]. Figure 1. Percent areal coverage of TARs in MOC images for northern hemisphere. White dots

  8. Impact of solar EUV flux on CO Cameron band and CO2+ UV doublet emissions in the dayglow of Mars

    E-Print Network [OSTI]

    Jain, Sonal Kumar

    2011-01-01T23:59:59.000Z

    This study is aimed at making a calculation about the impact of the two most commonly used solar EUV flux models -- SOLAR2000 (S2K) of \\cite{Tobiska04} and EUVAC model of \\cite{Richards94} -- on photoelectron fluxes, volume emission rates, ion densities and CO Cameron and CO$_2^+$ UV doublet band dayglow emissions on Mars in three solar activity conditions: minimum, moderate, and maximum. Calculated limb intensities profiles are compared with SPICAM/Mars Express and Mariner observations. Analytical yield spectrum (AYS) approach has been used to calculate photoelectron fluxes in Martian upper atmosphere. Densities of prominent ions and CO molecule in excited triplet a$^3\\Pi$ state are calculated using major ion-neutral reactions. Volume emission rates of CO Cameron and CO$_2^+$ UV doublet bands have been calculated for dif{}ferent observations (Viking condition, Mariner and Mars Express SPICAM observations) on Mars. For the low solar activity condition, dayglow intensities calculated using the S2K model are $\\...

  9. SU-E-I-75: Evaluation of An Orthopedic Metal Artifact Reduction (O-MAR) Algorithm On Patients with Spinal Prostheses Near Spinal Tumors

    SciTech Connect (OSTI)

    Shen, Z; Xia, P; Djemil, T [Cleveland Clinic, Cleveland, OH (United States); Klahr, P [Philips Healthcare, Cleveland, OH (United States)

    2014-06-01T23:59:59.000Z

    Purpose: To evaluate the impact of a commercial orthopedic metal artifact reduction (O-MAR) algorithm on CT image quality and dose calculation for patients with spinal prostheses near spinal tumors. Methods: A CT electron density phantom was scanned twice: with tissue-simulating inserts only, and with a titanium insert replacing solid water. A patient plan was mapped to the phantom images in two ways: with the titanium inside or outside of the spinal tumor. Pinnacle and Eclipse were used to evaluate the dosimetric effects of O-MAR on 12-bit and 16-bit CT data, respectively. CT images from five patients with spinal prostheses were reconstructed with and without O-MAR. Two observers assessed the image quality improvement from O-MAR. Both pencil beam and Monte Carlo dose calculation in iPlan were used for the patient study. The percentage differences between non-OMAR and O-MAR datasets were calculated for PTV-min, PTV-max, PTV-mean, PTV-V100, PTV-D90, OAR-V10Gy, OAR-max, and OAR-D0.1cc. Results: O-MAR improved image quality but did not significantly affect the dose distributions and DVHs for both 12-bit and 16- bit CT phantom data. All five patient cases demonstrated some degree of image quality improvement from O-MAR, ranging from small to large metal artifact reduction. For pencil beam, the largest discrepancy was observed for OARV-10Gy at 5.4%, while the other seven parameters were ?0.6%. For Monte Carlo, the differences between non-O-MAR and O-MAR datasets were ?3.0%. Conclusion: Both phantom and patient studies indicated that O-MAR can substantially reduce metal artifacts on CT images, allowing better visualization of the anatomical structures and metal objects. The dosimetric impact of O-MAR was insignificant regardless of the metal location, image bit-depth, and dose calculation algorithm. O-MAR corrected images are recommended for radiation treatment planning on patients with spinal prostheses because of the improved image quality and no need to modify current dose constraints. This work was supported by a research grant from Philips Healthcare. Paul Klahr is an employee of Philips Healthcare.

  10. mar015

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at Commercial andSeptember 25, 201230 Highlights199803a.Short-Term

  11. Improving the performance of MARS reservoir simulator on Cray-2 supercomputer

    SciTech Connect (OSTI)

    Li, K.G.; Dogru, A.H.; McDonald, A.E.; Merchant, A.R.; Al-Mulhem, A.A.; Al-Ruwaili, S.B.; Sobh, N.A.; Al-Sunaidi, H.A.

    1995-10-01T23:59:59.000Z

    The computational efficiency of a reservoir simulator-MARS-that is heavily used in Saudi Aramco, was significantly enhanced by improving the vectorization, parallelization and a key algorithm of the simulator. In particular, a state-of-the-art parallel linear equation solver was developed and implemented in the simulator. This new solver ran three to five times faster than the existing solvers. With the new solver and the other improvements in the simulator, the optimized code ran 1.3 to 1.8 times faster than the original code on a single processor and more than four times faster on four processors of Cray-2 supercomputer for typical Saudi Aramco reservoir models. This translates into great savings for the company since it, in effect, creates additional computational resources at no additional cost and improves the reservoir engineer`s productivity by shortening the job turnaround time.

  12. Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars

    E-Print Network [OSTI]

    Mstl, Christian; Frahm, Rudy A; Liu, Ying D; Long, David M; Colaninno, Robin C; Reiss, Martin A; Temmer, Manuela; Farrugia, Charles J; Posner, Arik; Dumbovi?, Mateja; Janvier, Miho; Dmoulin, Pascal; Boakes, Peter; Devos, Andy; Kraaikamp, Emil; Mays, Mona L; Vrsnak, Bojan

    2015-01-01T23:59:59.000Z

    The severe geomagnetic effects of solar storms or coronal mass ejections (CMEs) are to a large degree determined by their propagation direction with respect to Earth. There is a lack of understanding of the processes that determine their non-radial propagation. Here we present a synthesis of data from seven different space missions of a fast CME, which originated in an active region near the disk centre and, hence, a significant geomagnetic impact was forecasted. However, the CME is demonstrated to be channelled during eruption into a direction + 37+/-10 degree (longitude) away from its source region, leading only to minimal geomagnetic effects. In situ observations near Earth and Mars confirm the channelled CME motion, and are consistent with an ellipse shape of the CME-driven shock provided by the new Ellipse Evolution model, presented here. The results enhance our understanding of CME propagation and shape, which can help to improve space weather forecasts.

  13. Had the planet mars not existed: Kepler's equant model and its physical consequences

    E-Print Network [OSTI]

    Christian Bracco; Jean-Pierre Provost

    2009-06-02T23:59:59.000Z

    We examine the equant model for the motion of planets, which has been the starting point of Kepler's investigations before he modified it because of Mars observations. We show that, up to first order in eccentricity, this model implies for each orbit a velocity which satisfies Kepler's second law and Hamilton's hodograph, and a centripetal acceleration with an inverse square dependence on the distance to the sun. If this dependence is assumed to be universal, Kepler's third law follows immediately. This elementary execice in kinematics for undergraduates emphasizes the proximity of the equant model coming from Ancient Greece with our present knowledge. It adds to its historical interest a didactical relevance concerning, in particular, the discussion of the Aristotelian or Newtonian conception of motion.

  14. Potassium Rankine cycle power conversion systems for lunar-Mars surface power

    SciTech Connect (OSTI)

    Holcomb, R.S.

    1992-07-01T23:59:59.000Z

    The potassium Rankine cycle has good potential for application to nuclear power systems for surface power on the moon and Mars. A substantial effort on the development of the power conversion was carried out in the 1960`s which demonstrated successful operation of components made of stainless steel at moderate temperatures. This technology could be applied in the near term to produce a 360 kW(e) power system by coupling a stainless steel power conversion system to the SP-100 reactor. Improved performance could be realized in later systems by utilizing niobium or tantalum refractory metal alloys in the reactor and power conversion system. The design characteristics and estimated mass of power systems for each of three technology levels are presented in the paper. 8 refs.

  15. The gamma-ray burst monitor for the Russian Mars 1996 mission

    SciTech Connect (OSTI)

    Ziock, K.P.; Bixler, J. [Lawrence Livermore National Lab., CA (United States); Cline, T. [NASA Goddard Space Flight Center, Greenbelt, MD (United States)] [and others

    1997-08-01T23:59:59.000Z

    The authors describe an innovative detector designed primarily for the study of cosmic gamma-ray bursts aboard interplanetary spacecraft. The experiment is a fully functional, low cost, low mass, low-power instrument, which, when combined with other similar instruments, has the capability of localizing bursts to arcminute precision. The burst monitor is based on a photomultiplier tube and a plastic/CsI(Tl) phoswich detector and records photons in the 20--150-keV energy range with time resolutions up to several milliseconds. In addition, it records photon energy spectra. Events in the plastic scintillator are distinguished by a pulse shape discrimination circuit and are used to count electrons and protons. In a planetary orbiter or fly-by mission, this capability can be used to detect the presence of a magnetosphere. The authors describe in detail a version of this instrument which was built for the Russian Mars 1996 mission.

  16. Design of Small Impact-Resistant RTGs for Global Network of Unmanned Mars Landers

    SciTech Connect (OSTI)

    Schock, Alfred

    1991-06-26T23:59:59.000Z

    Ongoing studies by the National Aeronautics and Space Administration (NASA) for the robotic exploration of Mars contemplate a network of at least twenty small and relatively inexpensive landers distributed over both low and high latitudes of the Martian globe. They are intended to explore the structural, mineralogical, and chemical characteristics of the Martian soil, search for possible subsurface trapped ice, and collect long-term seismological and meteorological data over a period of ten years. They can also serve as precursors for later unmanned and manned Mars missions.; The collected data will be transmitted periodically, either directly to Earth or indirectly via an orbiting relay. The choice of transmission will determine the required power, which is currently expected to be between 2 and 12 watts(e) per lander. This could be supplied either by solar arrays or by Radioisotope Thermoelectric Generators (RTGs). Solar-powered landers could only be used for low Martian latitudes, but RTG-powered landers can be used for both low and high latitudes. Moreover, RTGs are less affected by Martian sandstorms and can be modified to resist high-G-load impacts. High impact resistance is a critical goal. It is desired by the mission designers, to minimize the mass and complexity of the system needed to decelerate the landers to a survivable impact velocity.; To support the NASA system studies, the U.S. Department of Energy's Office of Special Applications (DOE/OSA) asked Fairchild to perform RTG design studies for this mission. The key problem in designing these RTGs is how to enable the generators to tolerate substantially higher G-loads than those encountered on previous RTG missions.; The Fairchild studies resulted in designs of compact RTGs based on flight-proven and safety-qualified heat source components, with a number of novel features designed to provide the desired high impact tolerance. The present paper describes those designs and their rationale, and a preliminary, quasistatic impact analysis that yielded very encouraging result.

  17. Managing by passion, professionalism and performance : the MBP model : an alternative management framework developed for the Instituto de Ciencias Terra-Mar (ICTM)

    E-Print Network [OSTI]

    Coelho, Alexandre C. (Alexandre Costa)

    2007-01-01T23:59:59.000Z

    The objective of this thesis is to develop a new, tailor-made and innovative managerial framework for the Instituto de Ciencias Terra-Mar (ICTM). The ICTM is a multi-functional science and technology institute dedicated ...

  18. United States Patent [19] [11] Patent Number: 4,817,182 Adelson et al. [45] Date of Patent: Mar. 28, 1989

    E-Print Network [OSTI]

    Adelson, Edward

    United States Patent [19] [11] Patent Number: 4,817,182 Adelson et al. [45] Date of Patent: Mar. 28; 364/723-725, 728 [56] References Cited U.S. PATENT DOCUMENTS 4,455,649 6/1984 Esteban et al for the secceeding analysis procedure. 9 Claims, 4 Drawing Sheets #12;U.S. Patent Mar. 28, 1989 Sheet 1 of 4 4

  19. The Mars Hopper: Development, Simulation and Experimental Validation of a Radioisotope Exploration Probe for the Martian Surface

    SciTech Connect (OSTI)

    Nathan D. Jerred; Spencer Cooley; Robert C. O'Brien; Steven D. Howe; James E. O'Brien

    2012-09-01T23:59:59.000Z

    An advanced exploration probe has been proposed by the Center for Space Nuclear Research (CSNR) to acquire detailed data from the Martian surface and subsurface, hop large distances to multiple sites in short periods of time and perform this task repeatedly. Although several similar flying vehicles have been proposed utilizing various power sources and complex designs, e.g. solar-electric and chemical-based, the CSNRs Mars Hopper is based on a radioisotope thermal rocket (RTR) concept. The Mars Hoppers design relies on the high specific energies [J/kg] of radioisotopes and enhances their low specific power [W/kg] through the use of a thermal capacitance material to store thermal energy over time. During operation, the RTR transfers the stored thermal energy to a flowing gas, which is then expanded through a converging-diverging nozzle, producing thrust. Between flights, the platform will have ample time to perform in-depth science at each location while the propellant tanks and thermal capacitor recharge. Recharging the propellant tanks is accomplished by sublimation freezing of the ambient CO2 atmosphere with a cryocooler, followed by heating and pressurization to yield a liquid storage state. The proposed Mars Hopper will undergo a ballistic flight, consuming the propellant in both ascent and descent, and by using multiple hopper platforms, information can be gathered on a global scale, enabling better resource resolution and providing valuable information for a possible Mars sample-return mission. The CSNR, collaborating with the Idaho National Laboratory (INL) and three universities (University of Idaho, Utah State University and Oregon State University), has identified key components and sub-systems necessary for the proposed hopper. Current project activities include the development of a lab-scale prototypic Mars Hopper and test facility, along with computational fluid dynamics (CFD)/thermal-hydraulic models to yield a better understanding of the heat transfer process and complex nature of turbulent CO2 flow. Laboratory experimentation will aid design iterations and the development of both tethered and free-flying terrestrial hoppers that utilize an electrically heated core. The knowledge base acquired from these activities will refine the Mars Hoppers future performance and optimize the RTR core components prior to constructing the final design.

  20. hal-00133055,version1-29Mar2007 Nuclear spin interferences in bulk water at room temperature.

    E-Print Network [OSTI]

    Boyer, Edmond

    hal-00133055,version1-29Mar2007 Nuclear spin interferences in bulk water at room temperature. J in NMR pacs 03.67.-a: Quantum information pacs 67.57.Lm: Spin dynamics Abstract Nuclear spin interference in a static mag- netic field B0 4.7 T. For a homogeneity of B0 of the order of B0/B0 = 2 10-8 , the nuclear

  1. A model for the development of a lobate alpine rock glacier in southwest Colorado, USA: implications for water on Mars

    E-Print Network [OSTI]

    Degenhardt, John Jerome

    2004-09-30T23:59:59.000Z

    , 1993). Viking images of the northern plains on Mars reveal lobate flow bodies with wrinkled surfaces associated with rift valleys and the peripheral margins of splash-form craters. Lobate aprons have also been interpreted as possible viscous ice-flow... (i.e., massive ice); the coarse outer layer had to be removed before augering. The tool was useful at this locality because the volcanic source rock breaks down into small clasts, making hand excavation of the debris feasible. During the summer...

  2. Use of High-Power Brayton Nuclear Electric Propulsion (NEP) for a 2033 Mars Round-Trip Mission

    SciTech Connect (OSTI)

    McGuire, Melissa L. [Space Propulsion and Mission Analysis Office (Code: PBM), NASA Glenn Research Center, MS 500-103, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States); Martini, Michael C.; Packard, Thomas W. [Space Propulsion and Mission Analysis Office (Code: PBM), NASA Glenn Research Center, MS 500-103, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States); Analex Corporation, 1100 Apollo Drive, Brook Park, OH 44142 (United States); Weglian, John E. [Space Propulsion and Mission Analysis Office (Code: PBM), NASA Glenn Research Center, MS 500-103, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States); Ohio Aerospace Institute, 22800 Cedar Point Rd., Brook Park, OH 44142 (United States); Gilland, James H. [Ohio Aerospace Institute, 22800 Cedar Point Rd., Brook Park, OH 44142 (United States)

    2006-01-20T23:59:59.000Z

    The Revolutionary Aerospace Systems Concepts (RASC) team, led by the NASA Langley Research Center, is tasked with exploring revolutionary new approaches to enabling NASA to achieve its strategic goals and objectives in future missions. This paper provides the details from the 2004-2005 RASC study of a point-design that uses a high-power nuclear electric propulsion (NEP) based space transportation architecture to support a manned mission to Mars. The study assumes a high-temperature liquid-metal cooled fission reactor with a Brayton power conversion system to generate the electrical power required by magnetoplasmadynamic (MPD) thrusters. The architecture includes a cargo vehicle with an NEP system providing 5 MW of electrical power and a crewed vehicle with an NEP system with two reactors providing a combined total of 10 MW of electrical power. Both vehicles use a low-thrust, high-efficiency (5000 sec specific impulse) MPD system to conduct a spiral-out of the Earth gravity well, a low-thrust heliocentric trajectory, and a spiral-in at Mars with arrival late in 2033. The cargo vehicle carries two moon landers to Mars and arrives shortly before the crewed vehicle. The crewed vehicle and cargo vehicle rendezvous in Mars orbit and, over the course of the 60-day stay, the crew conducts nine-day excursions to Phobos and Deimos with the landers. The crewed vehicle then spirals out of Martian orbit and returns via a low-thrust trajectory to conduct an Earth flyby. The crew separates from the vehicle prior to Earth flyby and aerobrakes for a direct-entry landing.

  3. The radiation stability of glycine in solid CO2 - in situ laboratory measurements with applications to Mars

    E-Print Network [OSTI]

    Gerakines, P A

    2015-01-01T23:59:59.000Z

    The detection of biologically important, organic molecules on Mars is an important goal that may soon be reached. However, the current small number of organic detections at the Martian surface may be due to the harsh UV and radiation conditions there. It seems likely that a successful search will require probing the subsurface of Mars, where penetrating cosmic rays and Solar energetic particles dominate the radiation environment, with an influence that weakens with depth. Toward the goal of understanding the survival of organic molecules in cold radiation-rich environments on Mars, we present new kinetics data on the radiolytic destruction of glycine diluted in frozen carbon dioxide. Rate constants were measured in situ with infrared spectroscopy, without additional sample manipulation, for irradiations at 25, 50, and 75 K with 0.8-MeV protons. The resulting half-lives for glycine in CO2-ice are compared to previous results for glycine in H2O-ice and show that glycine in CO2-ice is much less stable in a radia...

  4. Extension of the quantum-kinetic model to lunar and Mars return physics

    SciTech Connect (OSTI)

    Liechty, D. S. [Aerothermodynamics Branch, NASA Langley Research Center, Hampton, Virginia 23681 (United States)] [Aerothermodynamics Branch, NASA Langley Research Center, Hampton, Virginia 23681 (United States); Lewis, M. J. [Department of Aerospace Engineering, University of Maryland, College Park, Maryland 20742 (United States)] [Department of Aerospace Engineering, University of Maryland, College Park, Maryland 20742 (United States)

    2014-02-15T23:59:59.000Z

    The ability to compute rarefied, ionized hypersonic flows is becoming more important as missions such as Earth reentry, landing high-mass payloads on Mars, and the exploration of the outer planets and their satellites are being considered. A recently introduced molecular-level chemistry model, the quantum-kinetic, or Q-K, model that predicts reaction rates for gases in thermal equilibrium and non-equilibrium using only kinetic theory and fundamental molecular properties, is extended in the current work to include electronic energy level transitions and reactions involving charged particles. Like the Q-K procedures for neutral species chemical reactions, these new models are phenomenological procedures that aim to reproduce the reaction/transition rates but do not necessarily capture the exact physics. These engineering models are necessarily efficient due to the requirement to compute billions of simulated collisions in direct simulation Monte Carlo (DSMC) simulations. The new models are shown to generally agree within the spread of reported transition and reaction rates from the literature for near equilibrium conditions.

  5. Benchmarking Heavy Ion Transport Codes FLUKA, HETC-HEDS MARS15, MCNPX, and PHITS

    SciTech Connect (OSTI)

    Ronningen, Reginald Martin [Michigan State University; Remec, Igor [Oak Ridge National Laboratory; Heilbronn, Lawrence H. [University of Tennessee-Knoxville

    2013-06-07T23:59:59.000Z

    Powerful accelerators such as spallation neutron sources, muon-collider/neutrino facilities, and rare isotope beam facilities must be designed with the consideration that they handle the beam power reliably and safely, and they must be optimized to yield maximum performance relative to their design requirements. The simulation codes used for design purposes must produce reliable results. If not, component and facility designs can become costly, have limited lifetime and usefulness, and could even be unsafe. The objective of this proposal is to assess the performance of the currently available codes â?? PHITS, FLUKA, MARS15, MCNPX, and HETC-HEDS â?? that could be used for design simulations involving heavy ion transport. We plan to access their performance by performing simulations and comparing results against experimental data of benchmark quality. Quantitative knowledge of the biases and the uncertainties of the simulations is essential as this potentially impacts the safe, reliable and cost effective design of any future radioactive ion beam facility. Further benchmarking of heavy-ion transport codes was one of the actions recommended in the â??Report of the 2003 RIA R&D Workshop".

  6. A 50-100 kWe gas-cooled reactor for use on Mars.

    SciTech Connect (OSTI)

    Peters, Curtis D. (.)

    2006-04-01T23:59:59.000Z

    In the space exploration field there is a general consensus that nuclear reactor powered systems will be extremely desirable for future missions to the outer solar system. Solar systems suffer from the decreasing intensity of solar radiation and relatively low power density. Radioisotope Thermoelectric Generators are limited to generating a few kilowatts electric (kWe). Chemical systems are short-lived due to prodigious fuel use. A well designed 50-100 kWe nuclear reactor power system would provide sufficient power for a variety of long term missions. This thesis will present basic work done on a 50-100 kWe reactor power system that has a reasonable lifespan and would function in an extraterrestrial environment. The system will use a Gas-Cooled Reactor that is directly coupled to a Closed Brayton Cycle (GCR-CBC) power system. Also included will be some variations on the primary design and their effects on the characteristics of the primary design. This thesis also presents a variety of neutronics related calculations, an examination of the reactor's thermal characteristics, feasibility for use in an extraterrestrial environment, and the reactor's safety characteristics in several accident scenarios. While there has been past work for space reactors, the challenges introduced by thin atmospheres like those on Mars have rarely been considered.

  7. Design, qualification and operation of nuclear rockets for safe Mars missions

    SciTech Connect (OSTI)

    Buden, D.; Madsen, W.W.; Olson, T.S. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Redd, L.R. (USDOE Idaho Field Office, Idaho Falls, ID (United States))

    1993-01-01T23:59:59.000Z

    Nuclear thermal propulsion modules planned for use on crew missions to Mars improve mission reliability and overall safety of the mission. This, as well as all other systems, are greatly enhanced if the system specifications take into account safety from design initiation, and operational considerations are well thought through and applied. For instance, the use of multiple engines in the propulsion module can lead to very high system safety and reliability. Operational safety enhancements may include: the use of multiple perigee burns, thus allowing time to ensure that all systems are functioning properly prior to departure from Earth orbit; the ability to perform all other parts of the mission in a degraded mode with little or no degradation of the mission; and the safe disposal of the nuclear propulsion module in a heliocentric orbit out of the ecliptic plane. The standards used to qualify nuclear rockets are one of the main cost drivers of the program. Concepts and systems that minimize cost and risk will rely on use of the element and component levels to demonstrate technology readiness and validation. Subsystem or systems testing then is only needed for verification of performance. Also, these will be the safest concepts because they will be more thoroughly understood and the safety margins will be well established and confirmed by tests.

  8. Design, qualification and operation of nuclear rockets for safe Mars missions

    SciTech Connect (OSTI)

    Buden, D.; Madsen, W.W.; Olson, T.S. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Redd, L.R. [USDOE Idaho Field Office, Idaho Falls, ID (United States)

    1993-04-01T23:59:59.000Z

    Nuclear thermal propulsion modules planned for use on crew missions to Mars improve mission reliability and overall safety of the mission. This, as well as all other systems, are greatly enhanced if the system specifications take into account safety from design initiation, and operational considerations are well thought through and applied. For instance, the use of multiple engines in the propulsion module can lead to very high system safety and reliability. Operational safety enhancements may include: the use of multiple perigee burns, thus allowing time to ensure that all systems are functioning properly prior to departure from Earth orbit; the ability to perform all other parts of the mission in a degraded mode with little or no degradation of the mission; and the safe disposal of the nuclear propulsion module in a heliocentric orbit out of the ecliptic plane. The standards used to qualify nuclear rockets are one of the main cost drivers of the program. Concepts and systems that minimize cost and risk will rely on use of the element and component levels to demonstrate technology readiness and validation. Subsystem or systems testing then is only needed for verification of performance. Also, these will be the safest concepts because they will be more thoroughly understood and the safety margins will be well established and confirmed by tests.

  9. A Comparison of Fission Power System Options for Lunar and Mars Surface Applications

    SciTech Connect (OSTI)

    Mason, Lee S. [NASA Glenn Research Center, Cleveland, Ohio 44135 (United States)

    2006-01-20T23:59:59.000Z

    This paper presents a comparison of reactor and power conversion design options for 50 kWe class lunar and Mars surface power applications with scaling from 25 to 200 kWe. Design concepts and integration approaches are provided for three reactor-converter combinations: gas-cooled Brayton, liquid-metal Stirling, and liquid-metal thermoelectric. The study examines the mass and performance of low temperature, stainless steel based reactors and higher temperature refractory reactors. The preferred system implementation approach uses crew-assisted assembly and in-situ radiation shielding via installation of the reactor in an excavated hole. As an alternative, self-deployable system concepts that use earth-delivered, on-board radiation shielding are evaluated. The analyses indicate that among the 50 kWe stainless steel reactor options, the liquid-metal Stirling system provides the lowest mass at about 5300 kg followed by the gas-cooled Brayton at 5700 kg and the liquid-metal thermoelectric at 8400 kg. The use of a higher temperature, refractory reactor favors the gas-cooled Brayton option with a system mass of about 4200 kg as compared to the Stirling and thermoelectric options at 4700 kg and 5600 kg, respectively. The self-deployed concepts with on-board shielding result in a factor of two system mass increase as compared to the in-situ shielded concepts.

  10. Incorporation of a Helical Tube Heat Transfer Model in the MARS Thermal Hydraulic Systems Analysis Code for the T/H Analyses of the SMART Reactor

    SciTech Connect (OSTI)

    Young Jin Lee; Bub Dong Chung [Korea Atomic Energy Research Institute, P.O. Box 105, Dukjin-Dong, Yuseong-Gu, Daejeon, 305-600 (Korea, Republic of); Jong Chull Jo; Hho Jung Kim [Korea Institute of Nuclear Safety, 19 Gusong-Dong, Yuseong-Gu, Daejeon, 305-338 (Korea, Republic of); Un Chul Lee [Department of Nuclear Engineering, Seoul National University, San 56-1 Sillim-Dong, Kwanak-Gu, Seoul, 151-742 (Korea, Republic of)

    2004-07-01T23:59:59.000Z

    SMART is a medium sized integral type advanced pressurized water reactor currently under development at KAERI. The steam generators of SMART are designed with helically coiled tubes and these are designed to produce superheated steam. The helical shape of the tubes can induce strong centrifugal effect on the secondary coolant as it flows inside the tubes. The presence of centrifugal effect is expected to enhance the formation of cross-sectional circulation flows within the tubes that will increase the overall heat transfer. Furthermore, the centrifugal effect is expected to enhance the moisture separation and thus make it easier to produce superheated steam. MARS is a best-estimate thermal-hydraulic systems analysis code with multi-phase, multi-dimensional analysis capability. The MARS code was produced by restructuring and merging the RELAP5 and the COBRA-TF codes. However, MARS as well as most other best-estimate systems analysis codes in current use lack the detailed models needed to describe the thermal hydraulics of helically coiled tubes. In this study, the heat transfer characteristics and relevant correlations for both the tube and shell sides of helical tubes have been investigated, and the appropriate models have been incorporated into the MARS code. The newly incorporated helical tube heat transfer package is available to the MARS users via selection of the appropriate option in the input. A performance analysis on the steam generator of SMART under full power operation was carried out using the modified MARS code. The results of the analysis indicate that there is a significant improvement in the code predictability. (authors)

  11. Feasibility of Ground Testing a Moon and Mars Surface Power Reactor in EBR-II

    SciTech Connect (OSTI)

    Sheryl Morton; Carl Baily; Tom Hill; Jim Werner

    2006-02-01T23:59:59.000Z

    Ground testing of a surface fission power system would be necessary to verify the design and validate reactor performance to support safe and sustained human exploration of the Moon and Mars. The Idaho National Laboratory (INL) has several facilities that could be adapted to support a ground test. This paper focuses on the feasibility of ground testing at the Experimental Breeder Reactor II (EBR-II) facility and using other INL existing infrastructure to support such a test. This brief study concludes that the INL EBR-II facility and supporting infrastructure are a viable option for ground testing the surface power system. It provides features and attributes that offer advantages to locating and performing ground testing at this site, and it could support the National Aeronautics and Space Administration schedules for human exploration of the Moon. This study used the initial concept examined by the U.S. Department of Energy Inter-laboratory Design and Analysis Support Team for surface power, a lowtemperature, liquid-metal, three-loop Brayton power system. With some facility modification, the EBR-II can safely house a test chamber and perform long-term testing of the space reactor power system. The INL infrastructure is available to receive and provide bonded storage for special nuclear materials. Facilities adjacent to EBR-II can provide the clean room environment needed to assemble and store the test article assembly, disassemble the power system at the conclusion of testing, and perform posttest examination. Capability for waste disposal is also available at the INL.

  12. Hyperspectral imaging spectroscopy of a Mars analogue environment at the North Pole Dome, Pilbara Craton, Western Australia

    E-Print Network [OSTI]

    Brown, Adrian J; Cudahy, Thomas

    2014-01-01T23:59:59.000Z

    A visible and near infrared (VNIR) to shortwave infrared (SWIR) hyperspectral dataset of the Early Archaean North Pole Dome, Pilbara Craton, Western Australia, has been analysed for indications of hydrothermal alteration. Occurrence maps of hydrothermal alteration minerals were produced. It was found that using a spatial resolution on the ground of approximately 5 m and spectral coverage from 0.4 to 2.5 mm was sufficient to delineate several hydrothermal alteration zones and associated veins, including phyllic, serpentinitic and chloritic alteration. These results suggest this level of spectral and spatial resolution would be ideal for localising shallow epithermal activity, should such activity have existed, on the surface of Mars.

  13. Origin of upper Bell Canyon Reservoir Sandstones (Guadalupian), El Mar and Paduca Fields, Southeast New Mexico and West Texas

    E-Print Network [OSTI]

    Weinmeister, Marcus Paul

    1978-01-01T23:59:59.000Z

    210 ft at El Mar and 120 ft at Paduca. Core examination shows that oil production comes primarily from massive sandstones having a gross thickness of over 70 ft. Single beds have a maximum thickness of 6 ft. These massive sandstones are interbedded... with organic-rich shales only 1/8 to 1 in. thick. Within non-producing sections, lithology is dominated by interlaminated siltstones and shales which are commonly bioturbated. The distribution of sandstones is in channel-like trends per- pendicular...

  14. Microsoft PowerPoint - 16.1225_Terry Cooke-Davies - Project Complexity as of 16 Mar

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment3311, 3312),Microgrid Workshop ReportAligning Leadershipof 16 Mar

  15. 46X, mar/46X, dic(Y)(qter p11::qter) - report of a case and literature review

    SciTech Connect (OSTI)

    Siller, M.; Aizpuru, E.; Munchinick, O.

    1994-09-01T23:59:59.000Z

    There is a great controversy between phenotype-karyotype in individuals having a chromosomal mosaicism involving one single line 45X, or 2 or more lines with structural rearrangements of the Y chromosome. Here we report a case in a prepuberal patient with a male phenotype, bilateral cryptorchidism, obesity (I), left nipple inversion and low scholar achievement. He was the product of a second normal gestation, with weight of 3,200 kg and height 47 cm, postnatal development reported as normal. The genealogy only shows a paternal uncle with primary sterility (never studied). Clinical findings: height 1.27 cm, weight 38 kg, C.C. 56 cm., T.C. 77 cm., A.C. 72 cm., obesity (I), inverted left nipple, bilateral cryptorchidea with both testicles in inguinal channel, but small and hypotrophic. The blood hormone level determinations were normal. In lymphocyte peripheral blood culture (66 metaphases studied) with C- and G-bands, we found 46X,mar/46X,dic(Y)(qter p11::qter). The karyotype in gonadal cell biopsy showed the presence of the one mentioned above and an additional cell line of 45X (46X,mar/45X/46Xdic). It is reported in the literature some mosaics of Turner syndrome and Y isodicentrics with female phenotype. In our case, the development of the genitals is male; that suggests that the gene determinant for the testes formation was present and active in the early stages of gonadal development.

  16. On the probability of the collision of a Mars-sized planet with the Earth to form the Moon

    E-Print Network [OSTI]

    Dvorak, Rudolf; Maindl, Thomas I

    2015-01-01T23:59:59.000Z

    The problem of the formation of the Moon is still not explained satisfactorily. While it is a generally accepted scenario that the last giant impact on Earth between some 50 to 100 million years after the starting of the formation of the terrestrial planets formed our natural satellite, there are still many open questions like the isotopic composition which is identical for these two bodies. In our investigation we will not deal with these problems of chemical composition but rather undertake a purely dynamical study to find out the probability of a Mars-sized body to collide with the Earth shortly after the formation of the Earth-like planets. For that we assume an additional massive body between Venus and Earth, respectively Earth and Mars which formed there at the same time as the other terrestrial planets. We have undertaken massive n-body integrations of such a planetary system with 4 inner planets (we excluded Mercury but assumed one additional body as mentioned before) for up to tens of millions of yea...

  17. Uranium-lead isotope systematics of Mars inferred from the basaltic shergottite QUE 94201

    SciTech Connect (OSTI)

    Gaffney, A M; Borg, L E; Connelly, J N

    2006-12-22T23:59:59.000Z

    Uranium-lead ratios (commonly represented as {sup 238}U/{sup 204}Pb = {mu}) calculated for the sources of martian basalts preserve a record of petrogenetic processes that operated during early planetary differentiation and formation of martian geochemical reservoirs. To better define the range of {mu} values represented by the source regions of martian basalts, we completed U-Pb elemental and isotopic analyses on whole rock, mineral and leachate fractions from the martian meteorite Queen Alexandra Range 94201 (QUE 94201). The whole rock and silicate mineral fractions have unradiogenic Pb isotopic compositions that define a narrow range ({sup 206}Pb/{sup 204}Pb = 11.16-11.61). In contrast, the Pb isotopic compositions of weak HCl leachates are more variable and radiogenic. The intersection of the QUE 94201 data array with terrestrial Pb in {sup 206}Pb/{sup 204}Pb-{sup 207}Pb/{sup 204}Pb-{sup 208}Pb/{sup 204}Pb compositional space is consistent with varying amounts of terrestrial contamination in these fractions. We calculate that only 1-7% contamination is present in the purified silicate mineral and whole rock fractions, whereas the HCl leachates contain up to 86% terrestrial contamination. Despite the contamination, we are able to use the U-Pb data to determine the initial {sup 206}Pb/{sup 204}Pb of QUE 94201 (11.086 {+-} 0.008) and calculate the {mu} value of the QUE 94201 mantle source to be 1.823 {+-} 0.008. This is the lowest {mu} value calculated for any martian basalt source, and, when compared to the highest values determined for martian basalt sources, indicates that {mu} values in martian source reservoirs vary by at least 100%. The range of source {mu} values further indicates that the {mu} value of bulk silicate Mars is approximately three. The amount of variation in the {mu} values of the mantle sources ({mu} {approx} 2-4) is greater than can be explained by igneous processes involving silicate phases alone. We suggest the possibility that a small amount of sulfide crystallization may generate large extents of U-Pb fractionation during formation of the mantle sources of martian basalts.

  18. Mars in the glacial ages of the past millions of years: modeling a planet partially mantled by dust and ice J.-B. Madeleine 1,2

    E-Print Network [OSTI]

    Madeleine, Jean-Baptiste

    and ice J.-B. Madeleine 1,2 (jean-baptiste.madeleine@upmc.fr), F. For- get 1 , J. W. Head 2 , T. Navarro 1 recent ice ages, reflected in the latitude dependent mantle, were more enigmatic, and their origin was more difficult to explain. In recent years, Mars GCMs underwent a new phase of development al- lowed

  19. JOURNAL DE PHYSIQUE Colloque C2, supplment au n 3, Tome 40, mars 1979, page C2-526 MOSSBAUER STUDIES OF THE COFACTOR CENTERS OF NITROGENASE

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    JOURNAL DE PHYSIQUE Colloque C2, supplment au n 3, Tome 40, mars 1979, page C2-526 MOSSBAUER spectroscopie Mossbauer avec des champs magntiques appliqus allant jusqu' 50 kG. L'analyse des rsultats donnes de RPE et en supposant que la protine MoFe possde 30 atomes de fer. Abstract.- The Mossbauer

  20. JOURNAL DE PHYSIQUE Collogue C2, supplement au n 3, Tome 40, mars 1979, page C2-39 A MOSSBAUER DIFFRACTOMETER USING A MICROCOMPUTER

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    JOURNAL DE PHYSIQUE Collogue C2, supplement au n 3, Tome 40, mars 1979, page C2-39 A MOSSBAUER, Eleatrotechnical Laboratory, Tanashi, Tokyo, Japan Rsum.- Un diffractomtre Mossbauer polyvalent utilisant un vitesse de rsonance et en dehors de la rsonance. Abstract.- A versatile Mossbauer diffractometer using

  1. 12me Colloque National AIP PRIMECA Le Mont Dore -29 Mars-1er avril 2011 DE SYSML A MODELICA : AIDE A LA FORMALISATION DE

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    12me Colloque National AIP PRIMECA Le Mont Dore - 29 Mars- 1er avril 2011 1 DE SYSML A MODELICA lequel l'approche de l'ingnierie systme base sur les modles est utilise. SysML et Modelica sont les graphique et visuelle alors que Modelica est un langage textuel destin la simulation des modles. Dans le

  2. 11. D. E. Smith et al., Science 284, 1495 (1999). 12. M. H. Carr, The Surface of Mars (Yale Univ. Press, New

    E-Print Network [OSTI]

    Li, Zhanqing

    11. D. E. Smith et al., Science 284, 1495 (1999). 12. M. H. Carr, The Surface of Mars (Yale Univ. Solomon, J. W. Head, C. H. Thurber, J. Geophys. Res. 90, 3049 (1985); M. T. Zuber, D. E. Smith, F. G, Rock Mag- netism (Cambridge Univ. Press, Cambridge, 1997)]. 28. D. E. Smith et al., Science 279, 1686

  3. Document Number: 81308 For technical questions, contact: detectortechsupport@vishay.com www.vishay.com Rev. 1.4, 26-Mar-09 1

    E-Print Network [OSTI]

    ambient light sensor is a PIN photodiode with high speed and high photo sensitivity in a clear, surface.vishay.com Rev. 1.4, 26-Mar-09 1 Ambient Light Sensor TEMD6010FX01 Vishay Semiconductors DESCRIPTION TEMD6010FX01.27 AEC-Q101 qualified High photo sensitivity Adapted to human eye responsivity Supression filter

  4. 7. Top-down control over the motor cortex Rogier B. Mars, Franz-Xaver Neubert, and Matthew F.S. Rushworth

    E-Print Network [OSTI]

    Mars, Rogier Bertrand

    7. Top-down control over the motor cortex Rogier B. Mars, Franz-Xaver Neubert, and Matthew F selection, top-down control is particularly needed during situations of response conflict, where. In this chapter, we discuss recent advances in the study of top-down control over motor cortex during action

  5. arXiv:1112.6136v2[physics.optics]8Mar2012 Controlled manipulation of light by cooperative response of atoms in an optical lattice

    E-Print Network [OSTI]

    Zheludev, Nikolay

    arXiv:1112.6136v2[physics.optics]8Mar2012 Controlled manipulation of light by cooperative response resonant imaging and may also be employed to form a metamaterial for precise control and manipulation response in an optical lattice to resonant incident light can be employed for precise control

  6. Northern mid-latitude glaciation in the Late Amazonian period of Mars: Criteria for the recognition of debris-covered glacier and valley glacier landsystem deposits

    E-Print Network [OSTI]

    Marchant, David R.

    in talus pile pore space caused lubrication and flow during an earlier climatic regime. A number of factors have remained uncertain, however, including the detailed structure and texture of LDA analogs, to assess the characteristics of LDA/LVF in the northern mid-latitudes of Mars. We find evidence

  7. None of this work has been peer-reviewed Description of ongoing Mars work led by Edwin Kite (kite@berkeley.edu), listed from most mature to least

    E-Print Network [OSTI]

    Kite, Edwin

    @berkeley.edu), listed from most mature to least mature. Overall approach is to use MRO data to divide the Early Mars atmosphere, and that most water vapor is cold-trapped as precipitation source. Thus. Snowmelt and sedimentary rocks thick early atmosphere not required? The recently published MOC- NA

  8. An analytical and numerical model to determine stresses in a Rock Melt Drill produced glass liner for potential use on Mars

    E-Print Network [OSTI]

    McConnell, Joshua B

    2000-01-01T23:59:59.000Z

    with investigating the properties of the created liner. Research Goal The Rock Melt Drill is one of several drilling technologies that may possess the potential for being an optimum choice for drilling on Mars, as will be discussed in greater depth in Chapter...

  9. III International Conference on SiGe(C) Epitaxy and Heterostructures, NM, Mar. 2003 SiGe Single-Hole Transistor Fabricated by AFM Oxidation and Epitaxial Regrowth

    E-Print Network [OSTI]

    III International Conference on SiGe(C) Epitaxy and Heterostructures, NM, Mar. 2003 110 SiGe Single, West Lafayette, IN 47907, U.S.A. Nanodevices on Si/SiGe heterostructures are of growing interest [1 the performance of the devices. In this paper, we demonstrate a reproducible single-hole transistor SiGe device

  10. Methodology assessment and recommendations for the Mars science laboratory launch safety analysis.

    SciTech Connect (OSTI)

    Sturgis, Beverly Rainwater; Metzinger, Kurt Evan; Powers, Dana Auburn; Atcitty, Christopher B.; Robinson, David B; Hewson, John C.; Bixler, Nathan E.; Dodson, Brian W.; Potter, Donald L.; Kelly, John E.; MacLean, Heather J.; Bergeron, Kenneth Donald (Sala & Associates); Bessette, Gregory Carl; Lipinski, Ronald J.

    2006-09-01T23:59:59.000Z

    The Department of Energy has assigned to Sandia National Laboratories the responsibility of producing a Safety Analysis Report (SAR) for the plutonium-dioxide fueled Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) proposed to be used in the Mars Science Laboratory (MSL) mission. The National Aeronautic and Space Administration (NASA) is anticipating a launch in fall of 2009, and the SAR will play a critical role in the launch approval process. As in past safety evaluations of MMRTG missions, a wide range of potential accident conditions differing widely in probability and seventy must be considered, and the resulting risk to the public will be presented in the form of probability distribution functions of health effects in terms of latent cancer fatalities. The basic descriptions of accident cases will be provided by NASA in the MSL SAR Databook for the mission, and on the basis of these descriptions, Sandia will apply a variety of sophisticated computational simulation tools to evaluate the potential release of plutonium dioxide, its transport to human populations, and the consequent health effects. The first step in carrying out this project is to evaluate the existing computational analysis tools (computer codes) for suitability to the analysis and, when appropriate, to identify areas where modifications or improvements are warranted. The overall calculation of health risks can be divided into three levels of analysis. Level A involves detailed simulations of the interactions of the MMRTG or its components with the broad range of insults (e.g., shrapnel, blast waves, fires) posed by the various accident environments. There are a number of candidate codes for this level; they are typically high resolution computational simulation tools that capture details of each type of interaction and that can predict damage and plutonium dioxide release for a range of choices of controlling parameters. Level B utilizes these detailed results to study many thousands of possible event sequences and to build up a statistical representation of the releases for each accident case. A code to carry out this process will have to be developed or adapted from previous MMRTG missions. Finally, Level C translates the release (or ''source term'') information from Level B into public risk by applying models for atmospheric transport and the health consequences of exposure to the released plutonium dioxide. A number of candidate codes for this level of analysis are available. This report surveys the range of available codes and tools for each of these levels and makes recommendations for which choices are best for the MSL mission. It also identities areas where improvements to the codes are needed. In some cases a second tier of codes may be identified to provide supporting or clarifying insight about particular issues. The main focus of the methodology assessment is to identify a suite of computational tools that can produce a high quality SAR that can be successfully reviewed by external bodies (such as the Interagency Nuclear Safety Review Panel) on the schedule established by NASA and DOE.

  11. Mars And Beyond: Human Spaceflight at the Museum of Science Boston Joseph Paul Cohen at the University of Massachuestts Boston, and Julia Sable at the Museum of Science Boston, and

    E-Print Network [OSTI]

    Ding, Wei

    on the Apollo and Orion missions, space suits, Mars settlement, and 3D printing (a technique for making needed to get the coordinates of the shuttle after it left earth. He presented visitors with amazing stories

  12. Colloque INRP 12, 13, et 14 mars 2008 l'INRP Lyon Communication J.C. Chabanne Enseigner des `attitudes' ? Une notion omniprsente

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    et artistiques « La culture humaniste contribue à la formation du jugement, du gout et de la jugement, du gout et de la sensibilité. Elle enrichit la perception du réel, ouvre l'esprit à la diversité administratifs n° 100, du 6-12-1990 : graphies de maitre, connaître, gout... #12;Colloque INRP 12, 13, et 14 mars

  13. (a) k = 2 (b) k = 5 Figure 6.2: Two classi cations of Mars by the k-means algorithm

    E-Print Network [OSTI]

    Wagstaff, Kiri L.

    step. 6.3.2 K-means Results To provide a basis for later comparisons, we ran the regular k-means96 (a) k = 2 (b) k = 5 Figure 6.2: Two classi#12;cations of Mars by the k-means algorithm Finally with k-means, we will #12;rst justify our choice of k-means for this problem. We do not claim that k-means

  14. International Journal of Network Security, Vol.4, No.2, PP.227-234, Mar. 2007 227 Pulsing RoQ DDoS Attack and Defense Scheme

    E-Print Network [OSTI]

    Yeung, Dit-Yan

    Q attacks. In this paper, we study in detail congestion-based RoQ DDoS attacks in mobile ad-hoc networks study congestion-based RoQ DDoS attacks in MANETs. To the best of our knowledge, our paper is the firstInternational Journal of Network Security, Vol.4, No.2, PP.227-234, Mar. 2007 227 Pulsing RoQ DDoS

  15. Importance of Biologically Active Aurora-like Ultraviolet Emission: Stochastic Irradiation of Earth and Mars by Flares and Explosions

    E-Print Network [OSTI]

    David S. Smith; John Scalo; J. Craig Wheeler

    2003-07-30T23:59:59.000Z

    (Abridged) We show that sizeable fractions of incident ionizing radiation from stochastic astrophysical sources can be redistributed to biologically and chemically important UV wavelengths, a significant fraction of which can reach the surface. This redistribution is mediated by secondary electrons, resulting from Compton scattering and X-ray photoabsorption, with energies low enough to excite atmospheric molecules and atoms, resulting in a rich aurora-like spectrum. We calculate the fraction of energy redistributed into biologically and chemically important wavelength regions for spectra characteristic of stellar flares and supernovae using a Monte-Carlo transport code written for this problem and then estimate the fraction of this energy that is transmitted from the atmospheric altitudes of redistribution to the surface for a few illustrative cases. Redistributed fractions are found to be of order 1%, even in the presence of an ozone shield. This result implies that planetary organisms will be subject to mutationally significant, if intermittent, fluences of UV-B and harder radiation even in the presence of a narrow-band UV shield like ozone. We also calculate the surficial transmitted fraction of ionizing radiation and redistributed ultraviolet radiation for two illustrative evolving Mars atmospheres whose initial surface pressures were 1 bar. Our results suggest that coding organisms on planets orbiting low-mass stars (and on the early Earth) may evolve very differently than on contemporary Earth, with diversity and evolutionary rate controlled by a stochastically varying mutation rate and frequent hypermutation episodes.

  16. Rover Traverse Science for Increased Mission Science Return

    E-Print Network [OSTI]

    on properties of rocks in the scene, and thus we begin by locating rocks in a stereo image pair. Rock properties including albedo and visual texture are then extracted from the rocks identified. The properties extracted percentage of downlink bandwidth. We have further focused our foundational work on rocks. Rocks are among

  17. Speed Map for Autonomous Rovers over Rough Terrain

    E-Print Network [OSTI]

    Loh, Jonathan Edau

    2012-01-01T23:59:59.000Z

    Grid Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . .considered obstacles [27] Grid Map showing Tile Size, Cellspeed map. It also covers grid maps and terrain roughness,

  18. 024/01/Wednesday 17h44Geophysical Constraints on the Nature of Atlantis Massif, 30N MAR Page 1 sur 2http://www.agu.org/cgi-bin/SFgate/SFgate?language=English&verbo...%2034995275%20%2fdata2%2fepubs%2fwais%2fdata%2ffm05%2ffm05.txt

    E-Print Network [OSTI]

    Demouchy, Sylvie

    024/01/Wednesday 17h44Geophysical Constraints on the Nature of Atlantis Massif, 30N MAR Page 1 sur AN: T33G-05 INVITED TI:Geophysical Constraints on the Nature of Atlantis Massif, 30 N MAR AU challenges prior interpretations that this OCC was mainly ultramafic, geophysical data having suggested much

  19. NASA Home > News & Features > News Topics > Solar System > Features Send Print Share > Log In To MyNASA | > Sign Up

    E-Print Network [OSTI]

    Arizona, University of

    overhead to provide a birds-eye view of mountain ranges, lakes and canyons. On the ground, a rover or lakeNASA Home > News & Features > News Topics > Solar System > Features Send Print Share > Log In To MyNASA | > Sign Up News & Features News Topics Shuttle & Station Moon & Mars Solar System Sun-Earth System

  20. Automated Robot Function Recovery after Unanticipated Failure or Environmental Change using a Minimum of Hardware Trials

    E-Print Network [OSTI]

    Bongard, Josh

    ., power drain due to coverage of solar panels); and repeated trials continuously change the state difficulties with JPL's two Mars rovers provide a dra- matic example: both robots suffered different with catastrophic, highly nonlinear robot faults that require recovery controllers qualitatively different from

  1. Automated Robot Function Recovery after Unanticipated Failure or Environmental Change using a Minimum of Hardware Trials

    E-Print Network [OSTI]

    Bongard, Josh

    ., power drain due to coverage of solar panels); and repeated trials continuously change the state difficulties with JPL's two Mars rovers provide a dra­ matic example: both robots suffered different with catastrophic, highly nonlinear robot faults that require recovery controllers qualitatively different from

  2. 2012 Scientific American Cooperation

    E-Print Network [OSTI]

    Nowak, Martin A.

    T The Cooperation Evolution of SPACE SCIENCE Mountain-Climbing MARS ROVER MEDICINE Vaccine Clues from HIV a nagging exception to the rule of evolution, cooperation has been one of its primary architects By Martin A following a lethal earthquake and tsunami, a maintenance worker in his 20s was among those who volunteered

  3. Astrium Satellites UK Lunar Polar Lander meeting, RAS

    E-Print Network [OSTI]

    Anand, Mahesh

    Propulsion Systems Mechanisms ExoMars Rover Portsmouth: Radar Systems -> Landing Passive Microwave 2018 Under development In orbit Exosat 1983 Hipparcos 1989 Solar Orbiter Planetary Science SolarAstrium.Itshallnotbecommunicatedtothirdpartieswithoutpriorwrittenagreement.Itscontentshallnotbedisclosed. Concept Design Based on these trade-results 2 concepts have been selected for further design Option 1

  4. John Yembrick Headquarters, Washington May 7, 2009

    E-Print Network [OSTI]

    : 09-100 NASA RELEASES INTERACTIVE 3-D VIEWS OF SPACE STATION, NEW MARS ROVER WASHINGTON -- NASA and Microsoft Corporation of Redmond, Wash., released an interactive, 3-D photographic collection of internal standard digital cameras to construct a 3-D view that can be navigated and explored online. "This stunning

  5. Computer Science 0 0 11 1 11 0

    E-Print Network [OSTI]

    Eustice, Ryan

    in student organizations and multidisciplinary teams, to learn about entrepreneurship and start companies, to compete in computing contests and events, to network with corporate recruiters and intern at top companies on the Solar Car team, the Mars Rover team, the Formula Hybrid SAE team, and dozens of other competitive

  6. W I N T E R 2 0 1 2 / 2 0 1 3 SchulichE N G I N E E R

    E-Print Network [OSTI]

    Calgary, University of

    Space research: Mars rovers, telescopes and astronaut food BY JENNIFER ALLFORD PAGE 15 How 3D printing AND ASTRONAUT FOOD BY JENNIFER ALLFORD Gliding to a world record in wingsuit skydiving BY JENNIFER SOWA How 3D printing is changing the world of design BY LIZZIE MACNEILL +Internship Photo Contest winners #12;Schulich

  7. On Visual Technology, Media Archives and Anthropological Curiosity: An Interview of Alan Macfarlane

    E-Print Network [OSTI]

    Macfarlane, Alan; Snyder, Hunter

    2014-01-01T23:59:59.000Z

    money to come to this university. We dont pay to come and watch films. Its trivial. Its surface. Its feeling. Its emotion. Its what you do in the evenings. Its not what you do in the real time. HS: Can you expand upon your interest in film... to be careful with that. They dont like to be filmed [or photographed] when they are looking really dirty and disheveled . . . Find out what upsets them and avoid that. What I think [is] the secret of retirement, one of the secrets of retirement...

  8. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 97, NO. A9, PAGES 13,911-13,914, SEPTEMBER 1, 1992 Comment on "Dayside Pickup Oxygen Ion Precipitation at Venus and Mars'

    E-Print Network [OSTI]

    Johnson, Robert E.

    on "Dayside Pickup Oxygen Ion Precipitation at Venus and Mars' Spatial Distributions, Energy Deposition; McGrath and Johnson, 1987]and by locally generated"pickup ions" [e.g., Kozyra et al., 1982; Ishimoto a hemisphericallyaveragedyield for ejection of oxygen atoms (O) from an oxygen exosphere, Y0= [rr(T> Uo)+ (6/·2)(otSn)/Uo]/o'd (1

  9. mar2003z

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, , (Energy9 EvaluationWHITE ROCK LOS ALAMOSI05/%2A`10-

  10. New Mexico to Mars

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire Solar541,9337, 2011R - 445 CU -StandardsNewtoDepartmentNew

  11. LANL on Mars

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 6157 /Top

  12. SSRL HEADLINES Mar 2002

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobsJuly throughR E Q U E N C Y279 March, 2002

  13. SSRL HEADLINES Mar 2007

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobsJuly throughR E Q U E N C Y279 March, 20029

  14. MARS - Facilities - Cyclotron Institute

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your Home and It'll Love You Back LoveM od e -

  15. Characterization and mapping of surface physical properties of Mars from CRISM multi-angular data: application to Gusev Crater and Meridiani Planum

    E-Print Network [OSTI]

    Fernando, J; Pilorget, C; Pinet, P; Ceamanos, X; Dout, S; Daydou, Y; Costard, F

    2014-01-01T23:59:59.000Z

    The analysis of the surface texture from the particle (grain size, shape and internal structure) to its organization (surface roughness) provides information on the geological processes. CRISM multi-angular observations (varied emission angles) allow to characterize the surface scattering behavior which depends on the composition but also the material physical properties (e.g., grain size, shape, internal structure, the surface roughness). After an atmospheric correction by the Multi-angle Approach for Retrieval of the Surface Reflectance from CRISM Observations, the surface reflectances at different geometries are analyzed by inverting the Hapke photometric model depending on the single scattering albedo, the 2-term phase function, the macroscopic roughness and the 2-term opposition effects. Surface photometric maps are created to observe the spatial variations of surface scattering properties as a function of geological units at the CRISM spatial resolution (200m/pixel). An application at the Mars Explorati...

  16. JOURNAL DE PHYSIQUE Colloque C2, supplment au n 3, Tome 40, mars 1979, page C2-221 MOSSBAUER EFFECT OF l25Te IN MnTe2 SPIN AXIS IN NON-COLLINEAR ANTIFERROMAGNETIC

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    JOURNAL DE PHYSIQUE Colloque C2, supplment au n 3, Tome 40, mars 1979, page C2-221 MOSSBAUER'effet Mossbauer de 25 Te dans Mnlea^ui est antiferromagntique au-dessous de 85 K, a t mesur de 4.2 K 90 K'accrot 30 degrs 60 K, et dcrot 0 degr 70 K. Abstract.- Mossbauer effect of 125 Te in MnTe2

  17. Fast Track'' nuclear thermal propulsion concept

    SciTech Connect (OSTI)

    Johnson, R.A.; Zweig, H.R. (Rocketdyne Division, Rockwell International Corporation, 6633 Canoga Avenue, P.O. Box 7922, Canoga Park, California 91309-7922 (United States)); Cooper, M.H.; Wett, J. Jr. (Westinghouse Electric Corporation, Post Office Box 158, Madison, Pennsylvania 15663 (United States))

    1993-01-10T23:59:59.000Z

    The objective of the Space Exploration Initiative ( America at the Threshold...,'' 1991) is the exploration of Mars by man in the second decade of the 21st century. The NASA Fast Track'' approach (NASA-LeRC Presentation, 1992) could accelerate the manned exploration of Mars to 2007. NERVA-derived nuclear propulsion represents a viable near-term technology approach to accomplish the accelerated schedule. Key milestones in the progression to the manned Mars mission are (1) demonstration of TRL-6 for the man-rateable system by 1999, (2) a robotic lunar mission by 2000, (3) the first cargo mission to Mars by 2005, and (4) the piloted Mars mission in 2007. The Rocketdyne-Westinghouse concept for nuclear thermal propulsion to achieve these milestones combines the nuclear reactor technology of the Rover/NERVA programs and the state-of-the-art hardware designs from hydrogen-fueled rocket engine successes like the Space Shuttle Main Engine (SSME).

  18. Quantitative laser-induced breakdown spectroscopy data using peak area step-wise regression analysis: an alternative method for interpretation of Mars science laboratory results

    SciTech Connect (OSTI)

    Clegg, Samuel M [Los Alamos National Laboratory; Barefield, James E [Los Alamos National Laboratory; Wiens, Roger C [Los Alamos National Laboratory; Dyar, Melinda D [MT HOLYOKE COLLEGE; Schafer, Martha W [LSU; Tucker, Jonathan M [MT HOLYOKE COLLEGE

    2008-01-01T23:59:59.000Z

    The ChemCam instrument on the Mars Science Laboratory (MSL) will include a laser-induced breakdown spectrometer (LIBS) to quantify major and minor elemental compositions. The traditional analytical chemistry approach to calibration curves for these data regresses a single diagnostic peak area against concentration for each element. This approach contrasts with a new multivariate method in which elemental concentrations are predicted by step-wise multiple regression analysis based on areas of a specific set of diagnostic peaks for each element. The method is tested on LIBS data from igneous and metamorphosed rocks. Between 4 and 13 partial regression coefficients are needed to describe each elemental abundance accurately (i.e., with a regression line of R{sup 2} > 0.9995 for the relationship between predicted and measured elemental concentration) for all major and minor elements studied. Validation plots suggest that the method is limited at present by the small data set, and will work best for prediction of concentration when a wide variety of compositions and rock types has been analyzed.

  19. Radioisotope Power System Delivery, Ground Support and Nuclear Safety Implementation: Use of the Multi-Mission Radioisotope Thermoelectric Generator for the NASA's Mars Science Laboratory

    SciTech Connect (OSTI)

    S.G. Johnson; K.L. Lively; C.C. Dwight

    2014-07-01T23:59:59.000Z

    Radioisotope power systems have been used for over 50 years to enable missions in remote or hostile environments. They are a convenient means of supplying a few milliwatts up to a few hundred watts of useable, long-term electrical power. With regard to use of a radioisotope power system, the transportation, ground support and implementation of nuclear safety protocols in the field is a complex process that requires clear identification of needed technical and regulatory requirements. The appropriate care must be taken to provide high quality treatment of the item to be moved so it arrives in a condition to fulfill its missions in space. Similarly it must be transported and managed in a manner compliant with requirements for shipment and handling of special nuclear material. This presentation describes transportation, ground support operations and implementation of nuclear safety and security protocols for a radioisotope power system using recent experience involving the Multi-Mission Radioisotope Thermoelectric Generator for National Aeronautics and Space Administrations Mars Science Laboratory, which launched in November of 2011.

  20. Urban Land and Housing Markets in the Punjab, Pakistan

    E-Print Network [OSTI]

    David E. Dowall; Peter Ellis

    2007-01-01T23:59:59.000Z

    COCO COCO MAR MAR MAR MAR MAR MAR MAR MAR MAR MAR SCL SMTSMTSMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT Hercules

  1. DOE Science Showcase - "Curiosity" R&D | OSTI, US Dept of Energy, Office of

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management Fermi SitePART I SECTIONPlasmaDatabase

  2. Design and Analysis of RTGs for Solar and Martian Exploration Missions

    SciTech Connect (OSTI)

    Schock, Alfred

    1990-05-01T23:59:59.000Z

    The paper described the results of design, analysis and spacecraft integration studies of Radioisotope Thermoelectric Generators (RTGs) for three unmanned space exploration missions. The three missions, consisting of the Mars Rover and Sample Return (MRSR) mission, the Solar Probe mission, and the Mars Global Net work (MGN) mission, are under study by the Jet Propulsion Laboratory (JPL) for the U.S. National Aeronautics and Space Administration (NASA). The NASA/JPL mission studies are supported by the U.S. Department of Energy's Office of Special Applications (DOE/OSA), which has commissioned Fairchild Space Company to carry out the required RTG design studies.

  3. Nuclear thermal propulsion engine cost trade studies

    SciTech Connect (OSTI)

    Paschall, R.K. (Rocketdyne Division, Rockwell International Corporation, Mail Stop IB57, 6633 Canoga Avenue, P.O. Box 7922, Canoga Park, California 91309-7922 (United States))

    1993-01-10T23:59:59.000Z

    The NASA transportation strategy for the Mars Exploration architecture includes the use of nuclear thermal propulsion as the primary propulsion system for Mars transits. It is anticipated that the outgrowth of the NERVA/ROVER programs will be a nuclear thermal propulsion (NTP) system capable of providing the propulsion for missions to Mars. The specific impulse (Isp) for such a system is expected to be in the 870 s range. Trade studies were conducted to investigate whether or not it may be cost effective to invest in a higher performance (Isp[gt]870 s) engine for nuclear thermal propulsion for missions to Mars. The basic cost trades revolved around the amount of mass that must be transported to low-earth orbit prior to each Mars flight and the cost to launch that mass. The mass required depended on the assumptions made for Mars missions scenarios including piloted/cargo flights, number of Mars missions, and transit time to Mars. Cost parameters included launch cost, program schedule for development and operations, and net discount rate. The results were very dependent on the assumptions that were made. Under some assumptions, higher performance engines showed cost savings in the billions of dollars; under other assumptions, the additional cost to develop higher performance engines was not justified.

  4. HPSS Outage Tue Mar 19 - Fri Mar 22

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.NewofGeothermal848 Unlimited Release PrintedDeputy GroupHPSS

  5. Microsoft Word - S04268_Mar07 thru Mar08.doc

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling

  6. DEPARTAMENTO DE RECURSOS DEL MAR

    E-Print Network [OSTI]

    de Campeche, Yucatán. Categoría en el SNI: Nivel I tbrule@mda.cinvestav.mx Luis René Antonio Capurro

  7. DEPARTAMENTO DE RECURSOS DEL MAR

    E-Print Network [OSTI]

    comercial. Reproducción, alimentación y crecimiento de los serranidos y lutjanidos del Banco de Campeche

  8. DEPARTAMENTO DE RECURSOS DEL MAR

    E-Print Network [OSTI]

    , alimentación y crecimiento de los serranidos y lutjanidos del Banco de Campeche, Yucatán. tbrule

  9. DEPARTAMENTO DE RECURSOS DEL MAR

    E-Print Network [OSTI]

    . Reproducción, alimentación y crecimiento de los serranidos y lutjanidos del Banco de Campeche, Yucatán. tbrule

  10. Visiting a farm farmers' mar

    E-Print Network [OSTI]

    in wash produc you remove t spoil faster. Wash all pro thoroughly w running wate f the peel the moistur e before plac the coating c duce with cool, er, even ormation: xas.com the Garden Gro grams: Food Saf xas A&M AgriLife n, dry, well t: bananas, toes, and store in the tarines, the ags

  11. Bar Mar field Point field

    E-Print Network [OSTI]

    Texas at Austin, University of

    Counties) West Texas Spraberry Scott Hamlin Regional Study (Pioneer Natural Resources) West Texas (Various Shelf Tannehill Frank Brown Regional Study (Gunn Oil) North Central Texas (Various Counties) West Texas Bone Spring Seay Nance Regional Study (Cimarex Energy) West Texas (Various Counties) West Texas Yates

  12. DEPARTAMENTO DE RECURSOS DEL MAR

    E-Print Network [OSTI]

    (Oceanografa, 1952) Univer- sidad de Buenos Aires, Argentina. Temas de investigacin: Calentamiento global de

  13. Management-MAR 14 1979

    E-Print Network [OSTI]

    . Distribution of forage of skipjack tuna {Eutbynnus pelamis) in the eastern tropical Pacific. By Maurice

  14. Microsoft Word - Mar98_report

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Run 1997-7) was re-commissioned at the beginning of Run 1998-2. The testing of the optics addressed several puzzling questions: - strong discrepancy of the vertical -function...

  15. ATVM Webinar (Mar. 15, 2012)

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartmentDepartment of2 of 5) ALARA TrainingANDREW (1,ATTENDEEES:ATVMATVMLoan

  16. Water for future Mars astronauts?

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulenceUtilizeRural PublicRatesAbout Us >Waste

  17. NERSC-Mar-2013.pptx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif Directorate -Advanced codeMonitoring onOctober

  18. NMMSS News Mar 2010.cdr

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysis andB - H,SEPTEMBER/OCTOBER 2007

  19. NMMSS News Mar 2012.cdr

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysis andB - H,SEPTEMBER/OCTOBER 2007Employment

  20. NMMSS News mar 2013.cdr

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysis andB - H,SEPTEMBER/OCTOBERWeNMMSS Germantown

  1. Mar_13Times.indd

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electronEnergy ManufacturingMapping

  2. European Space Agency European Mars Science and Exploration Conference: Mars Express & ExoMars

    E-Print Network [OSTI]

    Withers, Paul

    , Surrey RH5 6NT, UK 3 Solar System Missions Div., ESA/ESTEC/RSSD, Keplerlaan 1, NL-2201 AZ Noordwijk ZH, DE 5 German Aerospace Center, Rutherfordstr. 2, 12489 Berlin, DE 6 Inst. of Space Sciences CSIC trek around the Sun. Those meteoroids' mass and kinetic energy are incorporated into the Martian

  3. Current Approaches to Safety, Codes and Standards | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1.SpaceFluorControlsEnergyRev.Curiosity Mars

  4. Current Communications Needs | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1.SpaceFluorControlsEnergyRev.Curiosity MarsCurrent

  5. astronaut-rover exploration strategies: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Vidanage, Harinda Ranura 2009-11-26 56 This study explores how the EU Emissions Trading System (EU ETS) actually works on the ground affecting corporate climate...

  6. American Institute of Aeronautics and Astronautics Modeling and Simulation in the Design of a Lunar Rover

    E-Print Network [OSTI]

    of the suspension system is developed using the software package Dymola and the modeling language Modelica

  7. Lifecycle Verification of the NASA Ames K9 Rover Executive Dimitra Giannakopoulou1, 3

    E-Print Network [OSTI]

    Pasareanu, Corina

    , it shows that when verification proceeds hand-in-hand with software development throughout the lifecycle phases of software development, i.e. at design and implementation phases of the software lifecycle. Use-hand with later phases of software development. Figure 1. Compositional verification throughout the software

  8. AugEX: AUGER ELECTRON AND X-RAY SPECTROMETER ON CHANDRAYAAN-2 ROVER

    E-Print Network [OSTI]

    Bapat, Bhas

    for determining elemental composition which have a space heritage X-Ray Fluorescence (XRF) Particle-induced X-ray fluorescence (XRF) Expected Advantage: cover low Z elements with higher sensitivity than XRF or PIXE. ACHARYA-ray absorption or charged particle bombardment X-ray emission induced by X-ray absorption: XRF X-ray emission

  9. A stereo vision system for support of planetary surface exploration

    E-Print Network [OSTI]

    Pollefeys, Marc

    and for controlling the motion of the rover, using Light Emitting Diodes on the payload cab of the rover

  10. A stereo vision system for support of planetary surface exploration

    E-Print Network [OSTI]

    Pollefeys, Marc

    and for controlling the motion of the rover, using light emitting diodes on the payload cab of the rover

  11. Calibration, Terrain Reconstruction and Path Planning for a Planetary Exploration System

    E-Print Network [OSTI]

    Pollefeys, Marc

    and localization of the rover. The lat- ter makes use of four Light Emitting Diodes on the rover payload cab

  12. Gamma Radiation Dose Rate in Air due to Terrestrial Radionuclides in Southern Brazil: Synthesis by Geological Units and Lithotypes Covered by the Serra do Mar Sul Aero-Geophysical Project

    SciTech Connect (OSTI)

    Bastos, Rodrigo O.; Appoloni, Carlos R. [Applied Nuclear Physics Laboratory-Department of Physics-CCE State University of Londrina Campus Universitario-Rodovia Celso Garcia Cid s/n, Cx. Postal 6001, CEP 86051-990, Londrina, PR (Brazil); Pinese, Jose P. P. [Department of Geosciences-CCE State University of Londrina Campus Universitario-Rodovia Celso Garcia Cid s/n, Cx. Postal 6001, CEP 86051-990, Londrina, PR (Brazil)

    2008-08-07T23:59:59.000Z

    The absorbed dose rates in air due to terrestrial radionuclides were estimated from aerial gamma spectrometric data for an area of 48,600 km{sup 2} in Southern Brazil. The source data was the Serra do Mar Sul Aero-Geophysical Project back-calibrated in a cooperative work among the Geological Survey of Brazil, the Geological Survey of Canada, and Paterson, Grant and Watson Ltd. The concentrations of eU (ppm), eTh (ppm) and K (%) were converted to dose rates in air (nGy{center_dot}h{sup -1}) by accounting for the contribution of each element's concentration. Regional variation was interpreted according to lithotypes and a synthesis was performed according to the basic geological units present in the area. Higher values of total dose were estimated for felsic igneous and metamorphic rocks, with average values varying up to 119{+-}24 nGy{center_dot}h{sup -1}, obtained by Anitapolis syenite body. Sedimentary, metasedimentary and metamafic rocks presented the lower dose levels, and some beach deposits reached the lowest average total dose, 18.5{+-}8.2 nGy{center_dot}h{sup -1}. Thorium gives the main average contribution in all geological units, the highest value being reached by the nebulitic gneisses of Atuba Complex, 71{+-}23 nGy{center_dot}h{sup -1}. Potassium presents the lowest average contribution to dose rate in 53 of the 72 units analyzed, the highest contribution being obtained by intrusive alkaline bodies (28{+-}12 nGy{center_dot}h{sup -1}). The general pattern of geographic dose distribution respects well the hypotheses on geo-physicochemical behavior of radioactive elements.

  13. Design and Construction of a Guarded Hot Box Facility for Evaluating the Thermal Performance of Building Wall Materials

    E-Print Network [OSTI]

    Mero, Claire Renee

    2012-07-16T23:59:59.000Z

    , studs in walls are also thermal bridges, since the thermal resistance of wood is much less than the insulation surrounding them. [5] In order to block thermal bridging, either exterior insulation or Aerogel stud strips can be used. [4]. Most exterior... components. [6] 3 3 Aerogel is a silica based nano-scale structure originally developed by NASA and used on the Mars Rover that is 98% air [7], [8]. Until recently aerogel has been far too expensive to even consider using in homes, however...

  14. Design and Construction of a Guarded Hot Box Facility for Evaluating the Thermal Performance of Building Wall Materials

    E-Print Network [OSTI]

    Mero, Claire Renee

    2012-07-16T23:59:59.000Z

    , studs in walls are also thermal bridges, since the thermal resistance of wood is much less than the insulation surrounding them. [5] In order to block thermal bridging, either exterior insulation or Aerogel stud strips can be used. [4]. Most exterior... components. [6] 3 3 Aerogel is a silica based nano-scale structure originally developed by NASA and used on the Mars Rover that is 98% air [7], [8]. Until recently aerogel has been far too expensive to even consider using in homes, however...

  15. G. Elisabeta Marai Mar 3, 2014

    E-Print Network [OSTI]

    Marai, G. Elisabeta "Liz"

    .S., Computer Science & Electrical Engineering, Politehnica University, Romania, 1998. KQML ­ Communication, Romania, 1997. Time-delay Neural Network System for Speech Recognition Experience and Appointments Current instructor, Politehnica University, Romania, 1997 ­ 1999. Introductory Programming, Data Structures

  16. Chicane simulation in MARS Pavel Snopok

    E-Print Network [OSTI]

    McDonald, Kirk

    energy deposited [GeV/g/1ppp] Prompt dose [mSv/hr] Total energy deposited [GeV/g/1ppp] #12;Next steps

  17. Microsoft Word - flyerMar03.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    March 5, 2003 John N. Galayda Stanford Linear Accelerator Center (SLAC) "The LCLS Project: Status and Future" Dr. John Galayda is presently Director of the LCLS Project at SLAC....

  18. Mars Science Laboratory Launch Contingency Planning

    E-Print Network [OSTI]

    the payload being launched into space carries nuclear material. The primary goals of radiological contingency information, and prompt external communication with the media and general public. The Radiological Control Center (RADCC) at Ken- nedy Space Center (KSC) is the primary facility used to coordinate all

  19. Summer 2014 BOSTONIA 75 honoree was Mar-

    E-Print Network [OSTI]

    not to ig- nore the little things," and to be aware of the social and economic hardships that played a role in a patient's condition. Acker remembered standing with Edelin by his office window, when Edelin noticed

  20. A morphologic analysis of Granicus Valles, Mars

    E-Print Network [OSTI]

    Brandstrom, Gary Wayne

    1986-01-01T23:59:59.000Z

    . Pedestal craters have ejecta that may have flowed but they have a sloping outer edge. Johansen (1978, 1979) observed that craters with fluidized ejecta occur more often in northern and southern latitudes and craters with nonfluidized ejecta occur more...

  1. 31-mar-2011. Embedded software version 1.

    E-Print Network [OSTI]

    Kozak, Victor R.

    -board micro-controller. Photo of. CEAD20 ADC can work in different modes. The base mode is a multi - 1500 . 18. Temperature sensitivity of on-board sensor (typical) 1,9 mV/. 19. Output voltage of temperature sensor at +25 0.56 10%.. 20. CANbus transceiver is galvanically isolated from network

  2. Physics Careers 1-Mar-2014 1

    E-Print Network [OSTI]

    Ha, Taekjip

    and materials science 20% industry software firms, the Department of Defense, IBM, Google, and HRL Labs 5 school in Physics 20-30% go to graduate school in another field Computer science, Economics physics, quantum computing, nuclear physics, nanotechnology. 20% grad school in other field(CS, EE, Nucl

  3. Mars science Lab: By RICHARD COOK

    E-Print Network [OSTI]

    Waliser, Duane E.

    including technology infusion, margin management, schedule planning and oversight, and the role of external

  4. Microsoft Word - tzou2000mar.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Robert D. Y. Tzou is Professor and Chairman of the Department of Mechanical and Aerospace Engineering at the University of Missouri-Columbia; He has more then 100 publications in...

  5. d'Universit 24au28Mars

    E-Print Network [OSTI]

    Chamroukhi, Faicel

    ... naturellemen ! Remettez-vous en forme avec le SUMPPS et les tudiants infirmiers de l'IFPVPS. " Soir dguis

  6. CSCAMM Mar 11, 2010 Oleg Prezhdo

    E-Print Network [OSTI]

    Maryland at College Park, University of

    between potential surfaces opens channels for system to change electronic states. transition allowed weak, 163001 (2005) non-zero only if different in one orbital #12;Open Theoretical Questions How to couple diverge B2 B1 B2 2 E1 E2 = ei E1 E2 t/h B1 t B2 t dt | B >0 This affects evolution of (electronic

  7. 4 Mars 2012 Quelle est votre formation ?

    E-Print Network [OSTI]

    Gutkin, Boris

    Science Drilling program, président de la division Climate Past, Present & Future de l présente. Géographes, théoriciens de la dynamique des fluides, physiciens, éco- logistes, mathématiciens

  8. Mar-Apr_14Times.indd

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electronEnergy ManufacturingMapping theMappingMapsYou

  9. Yost_ARM_Mar07.ppt

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsingWhatY-12 recognized forCyclotronYonathImproved Cloud

  10. Microsoft Word - Appendix A (Mar-11 redux)

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthNrr-osams ADMIN5510Old8 February

  11. Science On Tap - Red Wine and Mars

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiationImplementingnpitcheResearch BriefsTenney, OfficeScienceEarlyScience On Tap - Red

  12. Wind motor applications for transportation

    SciTech Connect (OSTI)

    Lysenko, G.P.; Grigoriev, B.V.; Karpin, K.B. [Moscow Aviation Inst. (Russian Federation)

    1996-12-31T23:59:59.000Z

    Motion equation for a vehicle equipped with a wind motor allows, taking into account the drag coefficients, to determine the optimal wind drag velocity in the wind motor`s plane, and hence, obtain all the necessary data for the wind wheel blades geometrical parameters definition. This optimal drag velocity significantly differs from the flow drag velocity which determines the maximum wind motor power. Solution of the motion equation with low drag coefficients indicates that the vehicle speed against the wind may be twice as the wind speed. One of possible transportation wind motor applications is its use on various ships. A ship with such a wind motor may be substantially easier to steer, and if certain devices are available, may proceed in autonomous control mode. Besides, it is capable of moving within narrow fairways. The cruise speed of a sailing boat and wind-motored ship were compared provided that the wind velocity direction changes along a harmonic law with regard to the motion direction. Mean dimensionless speed of the wind-motored ship appears to be by 20--25% higher than that of a sailing boat. There was analyzed a possibility of using the wind motors on planet rovers in Mars or Venus atmospheric conditions. A Mars rover power and motor system has been assessed for the power level of 3 kW.

  13. Logic Programming Infrastructure for Inferences on FrameNet

    E-Print Network [OSTI]

    Baumgartner, Peter

    BMW buying Rover one might enter a query like (1) into a search engine. (1) BMW buy Rover results that are formulated e.g. in finite form (BMW buys Rover), relevant pages using semantically

  14. program marsg c This program provides a MarsGRAM type interface to the Mars Database

    E-Print Network [OSTI]

    Forget, François

    iheight real stormls real intens real raddust real dustlat real dustlon real f107 real sdf107 c write. deviations for thermosphere variation' c read(nin,*) f107,sdf107 c if ((f107.lt.50.).or.(f107.gt.450.)) then c write(nout,*) 'F10.7 must be between 50 and 450' c goto 14 c endif c if ((sdf107.lt.­3.).or.(sdf

  15. Fundamental investigations of underground coal gasification. Annual report Mar 82-Mar 83

    SciTech Connect (OSTI)

    Dunn, R.D.

    1983-03-01T23:59:59.000Z

    Coal deposits in the Appalachian and Midwest Coal Regions consist primarily of thin relatively deep seams of swelling bituminous coal, but little scientific effort in the United States has been directed toward underground coal gasification in these important industrial areas. In Europe, however, major work is under way on underground coal gasification in thin, deep seams of swelling coal. The principal investigator and a graduate student are participating in field tests in Belgium and supporting laboratory experiments in Germany. Mathematical models are being developed to interpret these experimental data, and a better understanding of the underground coal gasification process is emerging. This understanding is essential for evaluating potential problems, for devising solutions to such problems and for designing field tests.

  16. tel-00799897,version1-12Mar2013 tel-00799897,version1-12Mar2013

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    D tustine humy et elexndr toux wwF weri prtiulirement ierreD xuriD elex et on pour m9voir ide lors des

  17. tel-00676862,version1-16Mar2012 tel-00676862,version1-16Mar2012

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    inammatoire . . . . . . . . . . . . . . . . . . . . . . . . . . 47 2.3 De la stéatohépatite à la brose dans la stéatohépatite et la brose hépatique 79 3 Rôle des cellules ovales dans la brose hépatique 113

  18. tel-00956669,version1-7Mar2014 tel-00956669,version1-7Mar2014

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    ________________________________________________________ 11 I. Technologie des capteurs MOX ddis l' Air Quality Sensor (AQS)___________ 15 I.1. Quelques gnralits sur les capteurs MOX _____________________________________ 16 I.2. Dveloppement des

  19. MAVEN overview MAVEN is a NASA Mars Scout mission designed to orbit Mars

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    ) instrument is part of Above: MAVEN team members deployed the solar panels before the spacecraft's delivery. ·NASA Jet Propulsion Laboratory ·United Launch Alliance (Courtesy Lockheed Martin) #12, will measure solar input across three channels. Science operations The MAVEN Science Operations Center (SOC

  20. Chasma Boreale, Mars: Topographic characterization from Mars Orbiter Laser Altimeter data and

    E-Print Network [OSTI]

    Head III, James William

    sediment mantle in the surrounding region. The lowest portions of the North Polar Basin received the rest of residual frost and ice (Api) and of layered materials (Apl) [Thomas et al., 1992], exist as both a continuous cap of polar materials (Api and Apl) and as an arc of outliers [Dial, 1984; Tanaka and Scott, 1987

  1. 88--MarMar--0707 11AERODYNAMIC RESEARCH CENTER MECHANICAL AND AEROSPACE ENGINEERING DEPARTMENT

    E-Print Network [OSTI]

    Texas at Arlington, University of

    at ARCPast Detonation and PDE studies at ARC Stanley, Steven Bradley, "Experimental Investigation of Factors Meyers, J. M., "Performance Enhancements on a Pulsed Detonation Rocket," Master's Thesis, Department--20032003 Lu, F.K., Meyers, J.M. and Wilson, D.R., "Experimental study of propane- fueled pulsed detonation

  2. Outline DARTS lab Introduction SimScape Large terrain modeling CLOD visualization Conclusion Scalable Large, Multi-Resolution Terrain

    E-Print Network [OSTI]

    -Time Simulation (DARTS) EDL simulations (DSENDS) Rover simulations (ROAMS) Airship simulations Robotic arm

  3. TextureCam: A Smart Camera for Microscale, Mesoscale, and Deep Space Applications. David R. Thomp-, William Abbey2

    E-Print Network [OSTI]

    Wagstaff, Kiri L.

    rovers to interpret the sedimentology of the terrain en route, and could assist analyses by scientists

  4. Application of the enabler to nuclear electric propulsion

    SciTech Connect (OSTI)

    Pierce, B.L. (Westinghouse Electric Corporation Advanced Energy Systems P.O Box 158 Madison, PA 15663-0158 (US))

    1991-01-01T23:59:59.000Z

    This paper describes a power system concept that provides the electric power for a baseline electric propulsion system for a piloted mission to Mars. A 10-MWe space power system is formed by coupling an Enabler reactor with a simple non-recuperated closed Brayton cycle. The Enabler reactor is a gas-cooled reactor based on proven reactor technology developed under the NERVA/Rover programs. The selected power cycle, which uses a helium-xenon mixture at 1920 K at the turbine inlet, is diagramed and described. The specific mass of the power system over the power range from 5 to 70 MWe is given. The impact of operating life on the specific mass of a 10-MWe system is also shown.

  5. Cryochemical and CVD processing of shperical carbide fuels for propulsion reactors

    SciTech Connect (OSTI)

    Blair, H.T.; Carroll, D.W.; Matthews, R.B. (Los Alamos National Laboratory, MS E505, Los Alamos, New Mexico (USA))

    1991-01-10T23:59:59.000Z

    Many of the nuclear propulsion reactor concepts proposed for a manned mission to Mars use a coated spherical particle fuel form similar to that used in the Rover and NERVA propulsion reactors. The formation of uranium dicarbide microspheres using a cryochemical process and the coating of the UC{sub 2} spheres with zirconium carbide using chemical vapor deposition are being developed at Los Alamos National Laboratory. The cryochemical process is described with a discussion of the variables affecting the sphere formation and carbothermic reduction to produce UC{sub 2} spheres from UO{sub 2}. Emphasis is placed on minimizing the wastes produced by the process. The ability to coat particles with ZrC was recaptured, and improvements in the process and equipment were developed. Volatile organometallic precursors were investigated as alternatives to the original ZrCl{sub 4} precursor.

  6. Nerva fuel nondestructive evaluation and characterization equipment and facilities

    SciTech Connect (OSTI)

    Caputo, A.J. (Martin Marietta Energy Systems, Inc., Oak Ridge, Y-12 Plant Oak Ridge, TN 37831 (United States))

    1993-01-20T23:59:59.000Z

    Nuclear Thermal Propulsion (NTP) is one of the technologies that the Space Exploration Initiative (SEI) has identified as essential for a manned mission to Mars. A base or prior work is available upon which to build in the development of nuclear rockets. From 1955 to 1973, the U.S Atomic Energy Commission (AEC) sponsored development and testing of a nuclear rocket engine under Project Rover. The rocket engine, called the Nuclear Engine for Rocket Vehicle Application (NERVA), used a graphite fuel element incorporating coated particle fuel. Much of the NERVA development and manufacturing work was performed at the Oak Ridge Y[minus]12 Plant. This paper gives a general review of that work in the area of nondestructive evaluation and characterization. Emphasis is placed on two key characteristics: uranium content and distribution and thickness profile of metal carbide coatings deposited in the gas passage holes.

  7. Mission to Mars (2002) In 2020, the first manned mission to the planet Mars is launched. The Mars I spacecraft is

    E-Print Network [OSTI]

    Schenato, Luca

    Commander Woody Blake (Tim Robbins), Co- Commander Jim McConnell (Gary Sinise), and mission specialists

  8. Monday Tuesday Wednesday Thursday Friday Saturday Sunday 29-Mar 30-Mar 31-Mar 1-Apr 2-Apr 3-Apr 4-Apr

    E-Print Network [OSTI]

    .5 Protons 14 146 K Smilenov Azzam Hlatky 38.5 107.5 47.5 118.5 Hlatky 52 129 A 54.5 137.5 C 58 147 T C

  9. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Darby, Dennis

    and the copepod Acartia tonsa) had significant grazing impact on the thin layers despite the fact in a surprisingly wide range of enviro

  10. d u q u b e c dition, mars 2010

    E-Print Network [OSTI]

    la fois sur les rapports entre les systèmes naturel, économique et social, et sur l'impact de leurs Verreault Mise en page : Communications Science-Impact Publié par l'Institut Hydro-Québec en environnement Rolland Enviro 100, contenant 100% de fibres recyclées postconsommation, certifié ?co-Logo, procédé sans

  11. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    McGlathery, Karen

    enriched groundwater, and these support, in part, the high production of benthic macroalgae and microalgae, dark uptake by benthic microalgae, and immobilization by heterotrophic bacteria. In the absence of dark uptake of NH4 + by benthic microalgae, potential nitrification calculated as the dif- ference between

  12. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Myers, Ransom A.

    of consumers, resources and abiotic factors. Although benthic microalgae can have a pivotal role as primary microalgae (Hille- brand & Sommer 1997). Herbivory on epilithic microal- gae has been studied sporadically concepts with marine benthic microalgae, which are important components of coastal food webs. We manipu

  13. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Smith, Jennifer E.

    biomass, thus helping to favor corals by preventing the establishment and growth of algae that compete Pacific coral reef Scott L. Hamilton1 , Jennifer E. Smith2 , Nichole N. Price2 , Stuart A. Sandin2,* 1 in biomass, such as inside no- take marine reserves, their foraging activities have been shown to reduce

  14. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hays, Graeme

    . In fact we stated (Hays et al. 2003, p. 308): © Inter-Research 2004 · www.int-res.com*Email: g.hays@swan.ac.uk COMMENT Tracking turtles to their death Graeme C. Hays1,*, Annette C. Broderick2 , Brendan J. Godley2

  15. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hays, Graeme

    .g. seals, whales; Brillinger & Stewart 1998, Laidre et al. 2003) and reptiles (e.g. green turtle; Godley et of diving, including depth utilisation and dive dura- © Inter-Research 2006 · www.int-res.com*Email: andy

  16. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Lohmann, Kenneth J.

    .g. Dawson et al. 2005, Godley et al. 2010, White et al. 2010, Casabianca et al. 2012). For decades, marine of currents has led biologists © Inter-Research 2012 · www.int-res.com*Email: sabrina

  17. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hays, Graeme

    -ocean migration, along-shore © Inter-Research 2003 · www.int-res.com*Email: g.hays@swan.ac.uk NOTE Satellite. Broderick1 , Brendan J. Godley1 , Paolo Luschi2 , Wallace J. Nichols3 1 School of Biological Sciences

  18. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Exeter, University of

    & Limpus 1997). © Inter-Research 2003 · www.int-res.com*Email: mtn@swan.ac.uk Movement patterns of green turtles in Brazilian coastal waters described by satellite tracking and flipper tagging B. J. Godley1,*, E

  19. Tuesday, March 24, 2009 MARS POLAR CAPS: PAST AND PRESENT

    E-Print Network [OSTI]

    Rathbun, Julie A.

    . Safaeinili A. Smrekar S. E. Milkovich S. M. Nunes D. C. Campbell B. A. Carter L. M. Holt J. W. Seu R. Orosei, and possible flow. 9:30 a.m. Winebrenner D. P. * Koutnik M. R. Waddington E. D. Pathare A. V. Byrne S. Murray B this stratigraphic framework, we discuss Planum Australe's geologic history. 10:45 a.m. Brown A. J. * Calvin W. M

  20. Microsoft Word - DSQ Winter 2010_15mar10.doc

    National Nuclear Security Administration (NNSA)

    Ejecta Vacuum 36 inches Relayed ejecta region, 125 mm long, 60 mm dia. Containment vessel Green doublet Stop Interference filter Best focus plane ejecta data region (60 mm dia.,...