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  1. Overview of Lockheed Martin cryocoolers

    NASA Astrophysics Data System (ADS)

    Nast, T.; Olson, J.; Champagne, P.; Evtimov, B.; Frank, D.; Roth, E.; Renna, T.

    2006-02-01

    Lockheed Martin's Advanced Technology Center (LM-ATC) in Palo Alto, California, has been active in space cryogenic developments for over 30 years. In prior years, work focused on stored cryogen systems for temperatures up to 125 K. As the mechanical cryocoolers matured and demonstrated reliable operation these stored cryogen systems gradually became replaced. LM-ATC is currently developing solid hydrogen systems for temperatures below 7 K [Naes L, Wu S, Cannon J. WISE solid hydrogen cryostat design overview. In: Proceedings of SPIE, cryogenic optical systems and instruments XI, vol. 5904, August, 2005], but these coolers will soon be replaced by mechanical cryocoolers. This paper will present a summary of cryocooler developments at LM-ATC and will describe the recent performance of multiple stage systems. A four-stage pulse tube cryocooler developed under contract to the Jet Propulsion Laboratory (JPL) has been recently developed and operated at 3.8 K [Olson JR, Moore M, Champagne P, Roth E, Evtimov B, Jensen J, et al. Development of a space-type-4-stage pulse tube cryocooler for very low temperatures, Adv Cryogen Engr, vol. 50, Amer Inst of Physics, New York, in press]. Coolers with one, two and three stages have also been widely developed [Nast TC et al. Miniature pulse tube cryocooler for space applications. Cryocoolers, vol. 11. New York: Plenum Press; 2000. p. 145-54; Olson J et al. Development of a 10 K pulse tube cryocooler for space applications. In: Ross R, editor. Cryocoolers, vol. 12. New York: Kluwer Academic/Plenum Publishers; 2003. p. 241-6; Nast TC et al. Lockheed Martin two-stage pulse tube cryocooler for GIFTS. Cryocoolers, vol. 13. New York: Kluwer Academic/Plenum Publishers; 2005; Frank D et al. Lockheed Martin RAMOS engineering model cryocooler. Cryocoolers, vol. 13. New York: Kluwer Academic/Plenum Publishers; 2005]. A staging approach is required to achieve very low temperatures, and also provides cooling at warmer temperatures, which is

  2. 78 FR 52841 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-27

    ... Lockheed Martin Corporation/Lockheed Martin Aeronautics Company requested that we revise the NPRM (77 FR... other publications listed in this AD as of August 26, 2005 (70 FR 42262, July 22, 2005). ADDRESSES: For..., Amendment 39-14190 (70 FR 42262, July 22, 2005). AD 2005-15-01 applied to the specified products. The...

  3. 77 FR 21404 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ... (72 FR 67998)) Safair and Lockheed Martin Aeronautics Company (LM Aero) concurred with the proposed... November 14, 2007 (72 FR 64005) (corrected December 3, 2007 (72 FR 67998)). That NPRM proposed to require... (72 FR 64005, November 14, 2007; corrected December ] 3, 2007 (72 FR 67998)) and the FAA's response...

  4. 76 FR 41647 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-15

    ... of a certain other publication listed in this AD as of November 3, 2008 (73 FR 56464, dated September... Corporation/Lockheed Martin Aeronautics Company, Airworthiness Office, Dept. 6A0M, Zone 0252, Column P-58, 86... person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except...

  5. Lockheed Martin Skunk Works Single Stage to Orbit/Reusable Launch Vehicle

    NASA Technical Reports Server (NTRS)

    1999-01-01

    Lockheed Martin Skunk Works has compiled an Annual Performance Report of the X-33/RLV Program. This report consists of individual reports from all industry team members, as well as NASA team centers. This portion of the report is comprised of a status report of Lockheed Martin's contribution to the program. The following is a summary of the Lockheed Martin Centers involved and work reviewed under their portion of the agreement: (1) Lockheed Martin Skunk Works - Vehicle Development, Operations Development, X-33 and RLV Systems Engineering, Manufacturing, Ground Operations, Reliability, Maintainability/Testability, Supportability, & Special Analysis Team, and X-33 Flight Assurance; (2) Lockheed Martin Technical Operations - Launch Support Systems, Ground Support Equipment, Flight Test Operations, and RLV Operations Development Support; (3) Lockheed Martin Space Operations - TAEM and A/L Guidance and Flight Control Design, Evaluation of Vehicle Configuration, TAEM and A/L Dispersion Analysis, Modeling and Simulations, Frequency Domain Analysis, Verification and Validation Activities, and Ancillary Support; (4) Lockheed Martin Astronautics-Denver - Systems Engineering, X-33 Development; (5) Sanders - A Lockheed Martin Company - Vehicle Health Management Subsystem Progress, GSS Progress; and (6) Lockheed Martin Michoud Space Systems - X-33 Liquid Oxygen (LOX) Tank, Key Challenges, Lessons Learned, X-33/RLV Composite Technology, Reusable Cyrogenic Insulation (RCI) and Vehicle Health Monitoring, Main Propulsion Systems (MPS), Structural Testing, X-33 System Integration and Analysis, and Cyrogenic Systems Operations.

  6. Lockheed Martin T-Rex: Preliminary report

    SciTech Connect

    1997-07-31

    T-Rex is a robot which may be used in toxic or flammable environments. The assessment of the T-Rex conducted at the Lockheed Martin facility was limited in its scope. The scope of the assessment was directed by the type of equipment being used and the amount of accessibility to the equipment. Due to severe time constraints--the assessment was conducted in one day--human factors interface activities were limited. This should be considered a preliminary assessment. This report covers aspects of the technology that were available to the assessment team. Recommendations for future evaluation of this technology are also included. The contents are as follows: Electrical Considerations; General Electrical Consideration; Trailing Cables; Grounding; Surface High Voltage Distribution; Low and Medium Voltage Alternating Current Circuits; Potential for Harmful Human Factor Incidents and Enterprise Disablement; Exclusion Zone Emergency Maintenance; and Recommendations.

  7. Lockheed Martin Response to the OSP Challenge

    NASA Technical Reports Server (NTRS)

    Sullivan, Robert T.; Munkres, Randy; Megna, Thomas D.; Beckham, Joanne

    2003-01-01

    The Lockheed Martin Orbital Space Plane System provides crew transfer and rescue for the International Space Station more safely and affordably than current human space transportation systems. Through planned upgrades and spiral development, it is also capable of satisfying the Nation's evolving space transportation requirements and enabling the national vision for human space flight. The OSP System, formulated through rigorous requirements definition and decomposition, consists of spacecraft and launch vehicle flight elements, ground processing facilities and existing transportation, launch complex, range, mission control, weather, navigation, communication and tracking infrastructure. The concept of operations, including procurement, mission planning, launch preparation, launch and mission operations and vehicle maintenance, repair and turnaround, is structured to maximize flexibility and mission availability and minimize program life cycle cost. The approach to human rating and crew safety utilizes simplicity, performance margin, redundancy, abort modes and escape modes to mitigate credible hazards that cannot be designed out of the system.

  8. Extended range of the Lockheed Martin coax Micro cryocooler

    NASA Astrophysics Data System (ADS)

    Frank, D.; Champagne, P.; Will, E.; Kaldas, G.; Sanders, L.; Roth, E.; Olson, J. R.

    2016-03-01

    This paper describes the higher cooling capability of the Lockheed Martin coax Micro cryocooler thermal mechanical unit. The design of the previously qualified TRL6 Micro (Nast et al., 2014) [1] was modified to accommodate over twice the input power, greatly increasing the cooling capability. These Micro units are in a split configuration with the cold head separated from the compressor. This unit was optimized for cooling at 105 K and provides cooling over a wide range of temperatures. With a weight below 450 g, this small unit is ideal for compact instruments. Load lines were obtained over a range of powers, cold tip temperatures and rejection temperatures. This testing raised the Technology Readiness Level to six.

  9. Overview of the Lockheed Martin Compact Fusion Reactor (CFR) Program

    NASA Astrophysics Data System (ADS)

    McGuire, Thomas

    2015-11-01

    The Lockheed Martin Compact Fusion Reactor (CFR) Program endeavors to quickly develop a compact fusion power plant with favorable commercial economics and military utility. An overview of the concept and its diamagnetic, high beta magnetically encapsulated linear ring cusp confinement scheme will be given. The analytical model of the major loss mechanisms and predicted performance will be discussed, along with the major physics challenges. Key features of an operational CFR reactor will be highlighted. The proposed developmental path following the current experimental efforts will be presented. ©2015 Lockheed Martin Corporation. All Rights Reserved.

  10. Orbital Space Plane (OSP) Program at Lockheed Martin

    NASA Technical Reports Server (NTRS)

    Ford, Robert

    2003-01-01

    Lockheed Martin has been an active participant in NASA's Space Launch Initiative (SLI) programs over the past several years. SLI, part of NASA's Integrated Space Transportation Plan (ISTP), was restructured in November 2002 to focus the overall theme of safer, more affordable space transportation along two paths the Orbital Space Plane (OSP) and the Next Generation Launch Technology programs. The Orbital Space Plane program has the goal of providing rescue capability from the International Space Station by 2008 or earlier and transfer capability for crew (and contingency cargo) by 2012. The Next Generation Launch Technology program is combining research and development efforts from the 2d Generation Reusable Launch Vehicle (2GRLV) program with cutting-edge, advanced space transportation programs (previously designated 31d Generation) into one program aimed at enabling safe, reliable, cost-effective reusable launch systems by the middle of the next decade. Lockheed Martin is one of three prime contractors working to bring Orbital Space Plane system concepts to a system design level of maturity by December 2003. This paper and presentation will update the aerospace community on the progress of the OSP program, from an industry perspective, and provide insights into Lockheed Martin's role in enabling the vision of a safer, more affordable means of taking people to and from space.

  11. Hybrid Band effects program (Lockheed Martin shared vision CRADA)

    SciTech Connect

    Bacon, L. D.

    2012-03-01

    Hybrid Band{trademark} (H-band) is a Lockheed Martin Missiles and Fire Control (LMMFC) designation for a specific RF modulation that causes disruption of select electronic components and circuits. H-Band enables conventional high-power microwave (HPM) effects (with a center frequency of 1 to 2 GHz, for example) using a higher frequency carrier signal. The primary technical objective of this project was to understand the fundamental physics of Hybrid Band{trademark} Radio Frequency effects on electronic systems. The follow-on objective was to develop and validate a Hybrid Band{trademark} effects analysis process.

  12. Magnetic diagnostics on the Lockheed Martin T4 Experiment

    NASA Astrophysics Data System (ADS)

    Rhoads, John

    2015-11-01

    The Lockheed Martin T4 Experiment is a magnetically encapsulated linear ring cusp confinement device designed to study the physics relevant to the Compact Fusion Reactor program. As part of the diagnostics suite, an invasive three-axis magnetic probe and several flux loops have been constructed and installed. The probe was designed to reduce electrostatic pick-up by differentially amplifying two counter-wound coils for each axis. The flux loops are designed to detect plasma diamagnetism after accounting for the flux due to the background magnetic field. This mandates that the temporal evolution of the background field must be properly taken into account in order to discern the plasma response. To this end, both hardware and software techniques have been employed. Diagnostic designs and preliminary measurements will be presented.

  13. VentureStar by Lockheed Martin Releasing Satellite - Computer Graphic

    NASA Technical Reports Server (NTRS)

    1996-01-01

    This is an artist's conception of the NASA/Lockheed Martin Single-Stage-To-Orbit (SSTO) Reusable Launch Vehicle (RLV) releasing a satellite into orbit around the Earth. NASA's Dryden Flight Research Center, Edwards, California, expected to play a key role in the development and flight testing of the X-33, which was a technology demonstrator vehicle for a possible RLV. The RLV technology program was a cooperative agreement between NASA and industry. The goal of the RLV technology program was to enable significant reductions in the cost of access to space, and to promote the creation and delivery of new space services and other activities that would improve U.S. economic competitiveness. The X-33 was a wedged-shaped subscale technology demonstrator prototype of a potential future Reusable Launch Vehicle (RLV) that Lockheed Martin had dubbed VentureStar. The company had hoped to develop VentureStar early this century. Through demonstration flight and ground research, NASA's X-33 program was to have provided the information needed for industry representatives such as Lockheed Martin to decide whether to proceed with the development of a full-scale, commercial RLV program. A full-scale, single-stage-to-orbit RLV was to have dramatically increased reliability and lowered the costs of putting a pound of payload into space, from the current figure of $10,000 to $1,000. Reducing the cost associated with transporting payloads in Low Earth Orbit (LEO) by using a commercial RLV was to have created new opportunities for space access and significantly improved U.S. economic competitiveness in the world-wide launch marketplace. NASA expected to be a customer, not the operator, of the commercial RLV. The X-33 design was based on a lifting body shape with two revolutionary 'linear aerospike' rocket engines and a rugged metallic thermal protection system. The vehicle also had lightweight components and fuel tanks built to conform to the vehicle's outer shape. Time between X-33

  14. X-33 by Lockheed Martin on Launch Pad - Computer Graphic

    NASA Technical Reports Server (NTRS)

    1996-01-01

    This is an artist's conception of the X-33 technology demonstrator on its launch pad, ready for lift-off into orbit. NASA's Dryden Flight Research Center, Edwards, California, expected to play a key role in the development and flight testing of the X-33, which was a technology demonstrator vehicle for a possible Reusable Launch Vehicle (RLV). The RLV technology program was a cooperative agreement between NASA and industry. The goal of the RLV technology program was to enable significant reductions in the cost of access to space, and to promote the creation and delivery of new space services and other activities that would improve U.S. economic competitiveness. The X-33 was a wedged-shaped subscale technology demonstrator prototype of a potential future Reusable Launch Vehicle (RLV) that Lockheed Martin had dubbed VentureStar. The company hoped to develop VentureStar early this century. Through demonstration flight and ground research, NASA's X-33 program was to have provided the information needed for industry representatives such as Lockheed Martin to decide whether to proceed with the development of a full-scale, commercial RLV program. A full-scale, single-stage-to-orbit RLV was to have dramatically increase reliability and lowered costs of putting a pound of payload into space, from the current figure of $10,000 to $1,000. Reducing the cost associated with transporting payloads in Low Earth Orbit (LEO) by using a commercial RLV was to have created new opportunities for space access and significantly improved U.S. economic competitiveness in the world-wide launch marketplace. NASA expected to be a customer, not the operator, of the commercial RLV. The X-33 design was based on a lifting body shape with two revolutionary 'linear aerospike' rocket engines and a rugged metallic thermal protection system. The vehicle also had lightweight components and fuel tanks built to conform to the vehicle's outer shape. Time between X-33 flights was normally to have been seven

  15. Compliance with the Aerospace MACT Standard at Lockheed Martin

    SciTech Connect

    Kurucz, K.L.; Vicars, S.; Fetter, S.; Mueller, T.

    1997-12-31

    Actions taken and planned at four Lockheed Martin Corporation (LMC) facilities to comply with the Aerospace MACT Standard are reviewed. Many LMC sites have taken proactive steps to reduce emissions and implement low VOC coating technology. Significant administrative, facility, and material challenges remain to achieve compliance with the upcoming NESHAP and Control Technology Guideline (CTG) standards. The facilities discussed herein set up programs to develop and implement compliance strategies. These facilities manufacture military aircraft, missiles, satellites, rockets, and electronic guidance and communications systems. Some of the facilities are gearing up for new production lines subject to new source MACT standards. At this time the facilities are reviewing compliance status of all primers, topcoats, maskants and solvents subject to the standard. Facility personnel are searching for the most efficient methods of satisfying the recordkeeping, reporting and monitoring, sections of the standards while simultaneously preparing or reviewing their Title V permit applications. Facility decisions on paint booths are the next highest priority. Existing dry filter paint booths will be subject to the filtration standard for existing paint booths which requires the use of two-stage filters. Planned paint booths for the F-22 program, and other new booths must comply with the standard for new and rebuilt booths which requires three stage or HEPA filters. Facilities looking to replace existing water wash paint booths, and those required to retrofit the air handling equipment to accommodate the two-stage filters, are reviewing issues surrounding the rebuilt source definition.

  16. Lockheed Martin approach to a Reusable Launch Vehicle (RLV)

    NASA Astrophysics Data System (ADS)

    Elvin, John D.

    1996-03-01

    This paper discusses Lockheed Martin's perspective on the development of a cost effective Reusable Launch Vehicle (RLV). Critical to a successful Single Stage To Orbit (SSTO) program are; an economic development plan sensitive to fiscal constraints; a vehicle concept satisfying present and future US launch needs; and an operations concept commensurate with a market driven program. Participation in the economic plan by government, industry, and the commercial sector is a key element of integrating our development plan and funding profile. The RLV baseline concept design, development evolution and several critical trade studies illustrate the superior performance achieved by our innovative approach to the problem of SSTO. Findings from initial aerodynamic and aerothermodynamic wind tunnel tests and trajectory analyses on this concept confirm the superior characteristics of the lifting body shape combined with the Linear Aerospike rocket engine. This Aero Ballistic Rocket (ABR) concept captures the essence of The Skunk Works approach to SSTO RLV technology integration and system engineering. These programmatic and concept development topics chronicle the key elements to implementing an innovative market driven next generation RLV.

  17. Lockheed Martin Idaho Technologies Company information management technology architecture

    SciTech Connect

    Hughes, M.J.; Lau, P.K.S.

    1996-05-01

    The Information Management Technology Architecture (TA) is being driven by the business objectives of reducing costs and improving effectiveness. The strategy is to reduce the cost of computing through standardization. The Lockheed Martin Idaho Technologies Company (LMITCO) TA is a set of standards and products for use at the Idaho National Engineering Laboratory (INEL). The TA will provide direction for information management resource acquisitions, development of information systems, formulation of plans, and resolution of issues involving LMITCO computing resources. Exceptions to the preferred products may be granted by the Information Management Executive Council (IMEC). Certain implementation and deployment strategies are inherent in the design and structure of LMITCO TA. These include: migration from centralized toward distributed computing; deployment of the networks, servers, and other information technology infrastructure components necessary for a more integrated information technology support environment; increased emphasis on standards to make it easier to link systems and to share information; and improved use of the company`s investment in desktop computing resources. The intent is for the LMITCO TA to be a living document constantly being reviewed to take advantage of industry directions to reduce costs while balancing technological diversity with business flexibility.

  18. History of SAR at Lockheed Martin (previously Goodyear Aerospace)

    NASA Astrophysics Data System (ADS)

    Lasswell, Stephen W.

    2005-05-01

    Synthetic Aperture Radar (SAR) was invented by Carl Wiley at Goodyear Aircraft Company in Goodyear, Arizona, in 1951. From that time forward, as the company became Goodyear Aerospace Corporation, Loral Corporation, and finally Lockheed Martin Corporation, the Arizona employees past and present played a long and storied role in numerous SAR firsts. These include the original SAR patent (known as Simultaneous Doppler Buildup), the first demonstration SAR and flight test, the first operational SAR system, the first operational SAR data link, the first 5-foot resolution operational SAR system, the first 1-foot resolution SAR system, and the first large scale SAR digital processor. The company has installed and flown over five hundred SAR systems on more than thirty different types of aircraft for numerous countries throughout the world. The company designed and produced all of the evolving high performance SAR systems for the U. S. Air Force SR-71 "Blackbird" spy plane throughout its entire operational history, spanning some twenty-nine years. Recent SAR accomplishments include long-range standoff high performance SAR systems, smaller high resolution podded SAR systems for fighter aircraft, and foliage penetration (FOPEN) SAR. The company is currently developing the high performance SAR/MTI (Moving Target Indication) radar for the Army Aerial Common Sensor (ACS) system.

  19. 78 FR 38091 - Airworthiness Criteria: Proposed Airship Design Criteria for Lockheed Martin Aeronautics Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-25

    ... Register published on April 11, 2000 (65 FR 19477-19478), as well as at http://DocketsInfo.dot.gov . Docket... Martin Aeronautics Model LMZ1M Airship AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice... Aeronautics model LMZ1M airship. On March 12, 2012 Lockheed Martin Aeronautics submitted an application...

  20. GOES SXI Monthly Project Status Report Lockheed Martin Advanced Technology Center Month of October 2004

    NASA Technical Reports Server (NTRS)

    Morrison, Mons D.

    2004-01-01

    The Lockheed Martin Missiles and Space Advanced Technology Center (LMATC) is developing three Solar X-ray Imager (SXI) instruments. Two are being built for flights on the National Oceanic and Atmospheric Administration's (NOAA) Geostationary Operational Environmental Satellites (GOES) N and O, and one will be a flight spare. The SXI development is being managed by the NASA Goddard Space Flight Center. The SXI will image the full sun at wavelengths between approximately 6 and 60 A with a detector having 5 arcsec pixels. The launch of the first SXI will be on GOES N and the second SXI is to be launched on on GOES O or P.

  1. Thermionic plasma injection for the Lockheed Martin T4 Compact Fusion Reactor experiment

    NASA Astrophysics Data System (ADS)

    Heinrich, Jonathon

    2015-11-01

    Lockheed Martin's Compact Fusion Reactor (CFR) concept relies on diamagnetic confinement in a magnetically encapsulated linear ring cusp geometry. Plasma injection into cusp field configurations requires careful deliberation. Previous work has shown that axial injection via a plasma gun is capable of achieving high-beta conditions in cusp configurations. We present a pulsed, high power thermionic plasma source and the associated magnetic field topology for plasma injection into the caulked-cusp magnetic field. The resulting plasma fueling and cross-field diffusion is discussed.

  2. Chemical Safety Management Program for Lockheed Martin Energy Systems operations at the Y-12 Plant

    SciTech Connect

    C.W. McMahon

    2000-03-24

    Operated by Lockheed Martin Energy Systems (Energy Systems), the Department of Energy (DOE) Oak Ridge Y-12 Plant is a manufacturing facility that plays an integral role in the DOE nuclear weapons complex. Fulfilling the national security mission at the Y-12 Plant, continuing to be the cornerstone of uranium and lithium technologies for DOE, and providing customers with solutions for challenging manufacturing needs requires usage of a variety of chemicals and chemical processes. Performing this work safely while protecting workers, the public, and the environment is their commitment. The purpose of this document is to provide a description of the essential components of chemical safety, the integration of these components into the Y-12 Integrated Safety Management System (ISMS), and the functional integration of chemical safety issues across Y-12 organizations and programs managed by Energy Systems.

  3. Selection of Lockheed Martin's Preferred TSTO Configurations for the Space Launch Initiative

    NASA Technical Reports Server (NTRS)

    Hopkins, Joshua B.

    2002-01-01

    Lockheed Martin is developing concepts for safe, affordable Two Stage to Orbit (TSTO) reusable launch vehicles as part of NASA s Space Launch Initiaiive. This paper discusses the options considered for the design of the TSTO, the impact of each of these options on the vehicle configuration, the criteria used for selection of preferred configurations, and the results of the selection process. More than twenty configurations were developed in detail in order to compare optioiis such as propellant choice, serial vs. parallel burn sequence, use of propellant crossfeed between stages, bimese or optimized stage designs, and high or low staging velocities. Each configuration was analyzed not only for performance and sizing, but also for cost and reliability. The study concluded that kerosene was the superior fuel for first stages, and that bimese vehicles were not attractive.

  4. Results from Sandia National Laboratories/Lockheed Martin Electromagnetic Missile Launcher (EMML).

    SciTech Connect

    Lockner, Thomas Ramsbeck; Skurdal, Ben; Gaigler, Randy; Basak, L; Root, G; Aubuchon, Matthew S.; Turman, Bobby N.; Floyd, Mendel D.

    2005-05-01

    Sandia national laboratories (SNL) and lockheed martin MS2 are designing an electromagnetic missile launcher (EMML) for naval applications. The EMML uses an induction coilgun topology with the requirement of launching a 3600 lb. missile up to a velocity of 40 m/s. To demonstrate the feasibility of the electromagnetic propulsion design, a demonstrator launcher was built that consists of approximately 10% of the propulsion coils needed for a tactical design. The demonstrator verified the design by launching a 1430 lb weighted sled to a height of 24 ft in mid-December 2004 (Figure 1). This paper provides the general launcher design, specific pulsed power system component details, system operation, and demonstration results.

  5. Computer graphic of Lockheed Martin Venturestar Reusable Launch Vehicle (RLV) releasing a satellite

    NASA Technical Reports Server (NTRS)

    1997-01-01

    This is an artist's conception of the NASA/Lockheed Martin Single-Stage-To-Orbit (SSTO) Reusable Launch Vehicle (RLV) releasing a satellite into orbit around the earth. NASA's Dryden Flight Research Center, Edwards, California, was to play a key role in the development and flight testing of the X-33, which is a technology demonstrator vehicle for the RLV. The RLV technology program was a cooperative agreement between NASA and industry. The goal of the RLV technology program was to enable significant reductions in the cost of access to space, and to promote the creation and delivery of new space services and other activities that were to improve U.S. economic competitiveness. NASA Headquarter's Office of Space Access and Technology oversaw the RLV program, which was being managed by the RLV Office at NASA's Marshall Space Flight Center, located in Huntsville, Alabama. Responsibilities of other NASA Centers included: Johnson Space Center, Houston, Texas, guidance navigation and control technology, manned space systems, and health technology; Ames Research Center, Mountain View, CA., thermal protection system testing; Langley Research Center, Langley, Virginia, wind tunnel testing and aerodynamic analysis; and Kennedy Space Center, Florida, RLV operations and health management. Lockheed Martin's industry partners in the X-33 program are: Astronautics, Inc., Denver, Colorado, and Huntsville, Alabama; Engineering & Science Services, Houston, Texas; Manned Space Systems, New Orleans, LA; Sanders, Nashua, NH; and Space Operations, Titusville, Florida. Other industry partners are: Rocketdyne, Canoga Park, California; Allied Signal Aerospace, Teterboro, NJ; Rohr, Inc., Chula Vista, California; and Sverdrup Inc., St. Louis, Missouri.

  6. Lockheed Martin Energy Systems, Inc., Groundwater Program Office. Annual report for fiscal year 1994

    SciTech Connect

    1994-09-30

    This edition of the Lockheed Martin Energy Systems, Inc., (Energy Systems) Groundwater Program Annual Report summarizes the work carried out by the Energy Systems Groundwater Program Office (GWPO) for fiscal year (FY) 1994. The GWPO is responsible for coordination and oversight for all components of the groundwater programs at the three Oak Ridge facilities [Oak Ridge National Laboratory (ORNL), the Oak Ridge Y-12 Plant, and the Oak Ridge K-25 Site], as well as the Paducah and Portsmouth Gaseous Diffusion Plants (PGDP and PORTS, respectively.) This report describes the administrative framework of the GWPO including staffing, organization, and funding sources. In addition, summaries are provided of activities involving the Technical Support staff at the five facilities. Finally, the results of basic investigations designed to improve our understanding of the major processes governing groundwater flow and contaminant migration on the Oak Ridge Reservation (ORR) are reported. These investigations are conducted as part of the Oak Ridge Reservation Hydrology and Geology Studies (ORRHAGS) program. The relevance of these studies to the overall remediation responsibilities of Energy Systems is discussed.

  7. Validation of the Lockheed Martin Morphing Concept with Wind Tunnel Testing

    NASA Technical Reports Server (NTRS)

    Ivanco, Thomas G.; Scott, Robert C.; Love, Michael H.; Zink Scott; Weisshaar, Terrence A.

    2007-01-01

    The Morphing Aircraft Structures (MAS) program is a Defense Advanced Research Projects Agency (DARPA) led effort to develop morphing flight vehicles capable of radical shape change in flight. Two performance parameters of interest are loiter time and dash speed as these define the persistence and responsiveness of an aircraft. The geometrical characteristics that optimize loiter time and dash speed require different geometrical planforms. Therefore, radical shape change, usually involving wing area and sweep, allows vehicle optimization across many flight regimes. The second phase of the MAS program consisted of wind tunnel tests conducted at the NASA Langley Transonic Dynamics Tunnel to demonstrate two morphing concepts and their enabling technologies with large-scale semi-span models. This paper will focus upon one of those wind tunnel tests that utilized a model developed by Lockheed Martin Aeronautics Company (LM). Wind tunnel success criteria were developed by NASA to support the DARPA program objectives. The primary focus of this paper will be the demonstration of the DARPA objectives by systematic evaluation of the wind tunnel model performance relative to the defined success criteria. This paper will also provide a description of the LM model and instrumentation, and document pertinent lessons learned. Finally, as part of the success criteria, aeroelastic characteristics of the LM derived MAS vehicle are also addressed. Evaluation of aeroelastic characteristics is the most detailed criterion investigated in this paper. While no aeroelastic instabilities were encountered as a direct result of the morphing design or components, several interesting and unexpected aeroelastic phenomenon arose during testing.

  8. Computer graphic of Lockheed Martin X-33 Reusable Launch Vehicle (RLV) mounted on NASA 747 ferry air

    NASA Technical Reports Server (NTRS)

    1997-01-01

    This is an artist's conception of the NASA/Lockheed Martin X-33 Advanced Technology Demonstrator being carried on the back of the 747 Shuttle Carrier Aircraft. This was a concept for moving the X-33 from its landing site back to NASA's Dryden Flight Research Center, Edwards, California. The X-33 was a technology demonstrator vehicle for the Reusable Launch Vehicle (RLV). The RLV technology program was a cooperative agreement between NASA and industry. The goal of the RLV technology program was to enable significant reductions in the cost of access to space, and to promote the creation and delivery of new space services and other activities that will improve U.S. economic competitiveness. NASA Headquarter's Office of Space Access and Technology oversaw the RLV program, which was being managed by the RLV Office at NASA's Marshall Space Flight Center, located in Huntsville, Alabama. Responsibilities of other NASA Centers included: Johnson Space Center, Houston, Texas, guidance navigation and control technology, manned space systems, and health technology; Ames Research Center, Mountain View, CA., thermal protection system testing; Langley Research Center, Langley, Virginia, wind tunnel testing and aerodynamic analysis; and Kennedy Space Center, Florida, RLV operations and health management. Lockheed Martin's industry partners in the X-33 program are: Astronautics, Inc., Denver, Colorado, and Huntsville, Alabama; Engineering & Science Services, Houston, Texas; Manned Space Systems, New Orleans, LA; Sanders, Nashua, NH; and Space Operations, Titusville, Florida. Other industry partners are: Rocketdyne, Canoga Park, California; Allied Signal Aerospace, Teterboro, NJ; Rohr, Inc., Chula Vista, California; and Sverdrup Inc., St. Louis, Missouri.

  9. Martin Bartels als Lehrer von Carl Friedrich Gauß.

    NASA Astrophysics Data System (ADS)

    Dick, W. R.

    The role of the young Martin Bartels (1769 - 1836), later professor of mathematics at Kazan and Dorpat, as a teacher of C. F. Gauß is discussed on the basis of his autobiographic notes and of reminiscences by the astronomer Otto Struve, the son of Bartel's son-in-law Wilhelm Struve.

  10. 76 FR 485 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-05

    ... System Design Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086... September 11, 2008, we issued AD 2008-20-01, amendment 39-15680 (73 FR 56464, September 29, 2008), for all... until after the release of this planned revision is not warranted, since sufficient notice of the...

  11. 75 FR 13695 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-23

    ... 12866, 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... wing upper and lower rainbow fittings, and corrective actions if necessary; and repetitive replacements of rainbow fittings, which would extend the repetitive interval for the next inspection....

  12. 76 FR 28626 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-18

    ... damage of the lower surface of the center wing box, and corrective actions if necessary. This AD was prompted by reports of fatigue cracks of the lower surface of the center wing box. We are issuing this AD... surface of the center wing box, and corrective actions if necessary. Comments We gave the public...

  13. 75 FR 262 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-05

    ... inspections for any damage of the lower surface of the center wing box, and corrective actions if necessary. This proposed AD results from reports of fatigue cracks of the lower surface of the center wing box. We... cracks of the lower surface of the center wing box. Large fatigue cracks, some with multiple...

  14. 77 FR 63275 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-16

    .... Discussion On July 8, 2005, we issued AD 2005-15-01, Amendment 39-14191 (70 FR 42262, July 22, 2005), for all...-15-01, Amendment 39-14191 (70 FR 42262, July 22, 2005), we have received reports of small cracks... (outboard). Relevant Service Information AD 2005-15-01, Amendment 39-14191 (70 FR 42262, July 22,...

  15. 77 FR 20522 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-05

    ... listed in this AD as of November 2, 1995 (60 FR 51713, October 3, 1995). ADDRESSES: For service..., Amendment 39-9454 (60 FR 63414, December 11, 1995). That AD applies to the specified products. The NPRM published in the Federal Register on August 8, 2011 (76 FR 48049). That NPRM proposed to continue to...

  16. 76 FR 82106 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-30

    ... September 21, 2011 (76 FR 58416). That NPRM proposed to require repetitive inspections for cracking of the... opportunity to participate in developing this AD. We received no comments on the NPRM (76 FR 58416, September... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in...

  17. 76 FR 58416 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-21

    ... proposed AD. Discussion We previously issued AD 94-05-01, Amendment 39-8839 (59 FR 10275, March 4, 1994), and AD 2000-21-01, Amendment 39-11933 (65 FR 62994, October 20, 2000), which require modifications to... (59 FR 10275, March 4, 1994), and AD 2000-21-01, Amendment 39-11933 (65 FR 62994, October 20,...

  18. 76 FR 48049 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-08

    ... proposed AD. Discussion On December 5, 1995, we issued AD 95-20-04 R1, Amendment 39-9454 (60 FR 63414... removes an SSD that has been addressed by AD 99-08-20, amendment 39-11128 (64 FR 18324, April 14, 1999... the NPRM for AD 95-20-04, Amendment 39-9382 (60 FR 51713, October 3, 1995) we stated that as...

  19. 76 FR 22311 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-21

    ... (75 FR 13695). That NPRM proposed to require repetitive eddy current inspections to detect cracks in... fitting as possible into a configuration that would fit on a standard center wing. This fitting has not... Executive Order 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44...

  20. Lockheed D-6H: Preliminary report

    SciTech Connect

    1997-07-31

    The assessment of the D-6H conducted at the Lockheed Martin facility was limited in its scope. The scope of the assessment was directed by the type of equipment being used and the amount of accessibility to the equipment. Due to severe time constraints--the assessment was conducted in one day--human factor interface activities were limited. This report covers aspects of the technology that were available to the assessment team. Recommendations for future evaluation of this technology are also included.

  1. CFD applications: The Lockheed perspective

    NASA Technical Reports Server (NTRS)

    Miranda, Luis R.

    1987-01-01

    The Numerical Aerodynamic Simulator (NAS) epitomizes the coming of age of supercomputing and opens exciting horizons in the world of numerical simulation. An overview of supercomputing at Lockheed Corporation in the area of Computational Fluid Dynamics (CFD) is presented. This overview will focus on developments and applications of CFD as an aircraft design tool and will attempt to present an assessment, withing this context, of the state-of-the-art in CFD methodology.

  2. Lockheed P-80A Shooting Star

    NASA Technical Reports Server (NTRS)

    1946-01-01

    Lockheed P-80A Shooting Star: The Lockheed P-80A Shooting Star was America's first fully operation jet fighter. This all-yellow example arrived at Langley in November 1946. The P-80 was used for air speed calibration and development of a tuned vibration damper.

  3. Martin Winckler.

    PubMed

    Winckler, Martin

    2004-03-27

    Martin Winckler, born Marc Zaffran in 1955, is a French family doctor, a writer, a translator, and a cultural critic. Since the publication of La Vacation (Paris: POL, 1989), a novel based on his experience in an abortion clinic, he has published more than 20 books (fiction and non-fiction), including a user's manual of contraceptive devices (Contraceptions mode d'emploi. Vauvert: Le Diable Vauvert, 2003). His novel La maladie de Sachs has been translated into English as The Case of Dr Sachs (New York: Seven Stories Press, 2000). Winckler was recently a guest speaker at the Joint Meeting of the American Society of Bioethics and Humanities and the Canadian Society of Bioethics in Montreal, Canada. He will be a guest speaker at the Royal College of General Practitioners' Spring Symposium, in April this year in Bournemouth, UK. PMID:15051307

  4. Study on the Modifications Required to Re-Engine the Lockheed D-21 Drone

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This report was prepared by Lockheed Martin (LM). The purpose of this 45 day study contract was to investigate the feasibility of using the D-21 as a Rocket Based Combined Cycle engine test-bed. The new NASA engine is entitled "Demonstration of Rocket Combined Cycle Operations (DRACO)". Four objectives were defined and modification study provide an estimation of the: (1) mudified vehicle performance; (2) required engine performance; (3) required vehicle modification; and (4) modification cost and schedule.

  5. Lockheed Solar Observatory and the Discovery of Moreton-Ramsey Waves

    NASA Astrophysics Data System (ADS)

    Tarbell, Theodore D.

    2014-06-01

    Moreton Waves are high-speed disturbances seen traveling away from large solar flares in H-alpha movies of the solar chromosphere. They were discovered by the observer Harry Ramsey in the late 1950s, and then published and publicized by the director Gail Moreton, both of the Lockheed Solar Observatory in the Hollywood Hills of Southern California. These efforts established the scientific reputation and secured continuing funding of the observatory, whose present-day successor is the Lockheed Martin Solar and Astrophysics Lab in Palo Alto. Moreton waves are rare, and there was limited interest in them until the EIT instrument on SOHO began seeing large numbers of similar waves in the corona in the late 1990s. The exact relation between the two observations is still a research topic today. This talk will describe some of the history of the observatory and the discovery and early interpretation of the waves.

  6. Heating Analysis of the Lockheed Lifting Body

    NASA Technical Reports Server (NTRS)

    Palmer, Grant; Henline, Bill; Olynick, Dave; Edwards, Thomas A. (Technical Monitor)

    1994-01-01

    Computational fluid dynamic (CFD) analysis is performed on the Lockheed Lifting Body Single-Stage-to-Orbit vehicle to determine the heat transfer to the vehicle during its descent trajectory. Seven species, chemical nonequilibriurn computations using the GASP code will be completed at several trajectory points to assess the thermal protection requirements of the vehicle. Sophisticated surface boundary conditions including in-depth conduction, catalycity, and a variable temperature wall have been incorporated into the flow solver.

  7. Martin B-10B

    NASA Technical Reports Server (NTRS)

    1935-01-01

    Martin B-10B: Although the front turret looks like it may have bee too high, the drag of the Martin B-10 bomber was low enough for it to have been faster than any U. S. Fighter when it was first ordered in January 1933. The NACA flew one of these B-10Bs in 1937 at the Langley Memorial Aeronautical Laboratory.

  8. Martin RA-30 Baltimore

    NASA Technical Reports Server (NTRS)

    1943-01-01

    Martin RA-30 Baltimore: The Martin RA-30 Baltimore was a light bomber ordered by the Royal Air Force. Some examples were retained in the United States as part of a 'Reverse Lend-Lease.' This example was flown by the NACA from June 1943 until March 1944.

  9. Artist concept computer graphic of Lockheed Martin X-33 Advance Technology Demonstrator vehicle in f

    NASA Technical Reports Server (NTRS)

    1998-01-01

    An artist's conception of the X-33 in flight, with the aerospike engine firing. The X-33 demonstrator was designed to test a wide range of new technologies (including the aerospike engine), that would be used in a future single-stage-to-orbit reusable launch vehicle called the VentureStar. Due to technical problems with the liquid hydrogen tank, however, the X-33 program was cancelled in February 2001.

  10. Constructing a Cyber Preparedness Framework (CPF): The Lockheed Martin Case Study

    ERIC Educational Resources Information Center

    Beyer, Dawn M.

    2014-01-01

    The protection of sensitive data and technologies is critical in preserving United States (U.S.) national security and minimizing economic losses. However, during a cyber attack, the operational capability to constrain the exfiltrations of sensitive data and technologies may not be available. A cyber preparedness methodology (CPM) can improve…

  11. The Status of Thermophotovoltaic Energy Conversion Technology at Lockheed Martin Corporation

    SciTech Connect

    EJ Brown; PF Baldasaro; SR Burger; LR Danielson; DM DePoy; JM Dolatowski; PM Fourspring; GJ Nichols; WF Topper; TD Rahmlow

    2004-07-29

    In a thermophotovoltaic (TPV) energy conversion system, a heated surface radiates in the mid-infrared range onto photocells which are sensitive at these energies. Part of the absorbed energy is converted into electric output. Conversion efficiency is maximized by reducing the absorption of non-convertible energy with some form of spectral control. In a TPV system, many technology options exist. Our development efforts have concentrated on flat-plate geometries with greybody radiators, front surface tandem filters and a multi-chip module (MCM) approach that allows selective fabrication processes to match cell performance. Recently, we discontinued development of GaInAsSb quaternary cell semiconductor material in favor of ternary GaInAs material. In our last publication (Ref. 1), the authors reported conversion efficiencies of about 20% (radiator 950 C, cells 22 C) for small modules (1-4 cm{sup 2}) tested in a prototypic cavity test environment. Recently, we have achieved measured conversion efficiencies of about 12.5% in larger ({approx}100 cm{sup 2}) test arrays. The efficiency reduction in the larger arrays was probably due to quality and variation of the cells as well as non-uniform illumination from the hot radiator to the cold plate. Modules in these tests used GaInAsSb cells with 0.52 eV bandgap and front surface filters for spectral control. This paper provides details of the individual system components and the rationale for our technical decisions. It also describes the measurement techniques used to record these efficiencies.

  12. Experimental and Computational Sonic Boom Assessment of Lockheed-Martin N+2 Low Boom Models

    NASA Technical Reports Server (NTRS)

    Cliff, Susan E.; Durston, Donald A.; Elmiligui, Alaa A.; Walker, Eric L.; Carter, Melissa B.

    2015-01-01

    Flight at speeds greater than the speed of sound is not permitted over land, primarily because of the noise and structural damage caused by sonic boom pressure waves of supersonic aircraft. Mitigation of sonic boom is a key focus area of the High Speed Project under NASA's Fundamental Aeronautics Program. The project is focusing on technologies to enable future civilian aircraft to fly efficiently with reduced sonic boom, engine and aircraft noise, and emissions. A major objective of the project is to improve both computational and experimental capabilities for design of low-boom, high-efficiency aircraft. NASA and industry partners are developing improved wind tunnel testing techniques and new pressure instrumentation to measure the weak sonic boom pressure signatures of modern vehicle concepts. In parallel, computational methods are being developed to provide rapid design and analysis of supersonic aircraft with improved meshing techniques that provide efficient, robust, and accurate on- and off-body pressures at several body lengths from vehicles with very low sonic boom overpressures. The maturity of these critical parallel efforts is necessary before low-boom flight can be demonstrated and commercial supersonic flight can be realized.

  13. The Status of Thermophotovoltaic Energy Conversion Technology at Lockheed Martin Corp.

    SciTech Connect

    E.J. Brown; P.F. Baldasaro; S.R. Burger; L.R. Danielson; D.M. DePoy; G.J. Nichols; W.F. Topper; T.D. Rahmlow

    2003-01-31

    In a thermophotovoltaic (TPV) energy conversion system, a heated surface radiates in the mid-infrared range onto photodiodes which are sensitive at these energies. Part of the absorbed energy is converted into electric output. Conversion efficiency is maximized by reducing the absorption of non-convertible energy with some form of spectral control. In a TPV system, many technology options exist. The development efforts have concentrated on flat-plate geometries with greybody radiators, low bandgap quaternary diodes, front surface tandem filters and a multi-chip module (MCM) approach that allows selective fabrication processes to match diode performance. Recently, the authors achieved conversion efficiencies of about 20% (radiator 950 C, diodes 22 C) for a module in a prototypic cavity test environment. These tests employed InGaAsSb diodes with 0.52 eV bandgap and front surface filters for spectral control. This paper provides details of the individual system components and describes the measurement technique used to record these efficiencies.

  14. Martin B-26 Marauder

    NASA Technical Reports Server (NTRS)

    1941-01-01

    Martin B-26 Marauder: This Martin B-26 was cracked up at Langley Field during some NACA tests. Langley test pilot Melvin N. Gough is believed to have been flying the aircraft. The accident occurred as a result of failure of the nose wheel to extend. According to the NACA's Albert E. Sherman, Langley was to modify the nacelles of this Martin B-26 for a proposed jet propulsion system. Fair out and extend the nacelle afterbody, seal all the air intakes, and arrange for the exhaust to be discharged from the modified nacelle at the tail opening. Exhaust boilers and jet burners added to the engine and nacelle complete the idea.

  15. Lockheed Electra - animation showing air turbulence detection

    NASA Technical Reports Server (NTRS)

    1999-01-01

    On Mar. 24, 1998, an L-188 Electra aircraft owned by the National Science Foundation, Arlington, Virginia, and operated by the National Center for Atmospheric Research, Boulder, Colorado, flew near Boulder with an Airborne Coherent LiDAR (Light Detection and Ranging) for Advanced In-flight Measurement. This aircraft was on its first flight to test its ability to detect previously invisible forms of clear air turbulence. Coherent Technologies Inc., Lafayette, Colorado, built the LiDAR device for the NASA Dryden Flight Research Center, Edwards, California. NASA Dryden participated in the effort as part of the NASA Aviation Safety Program, for which the lead center was Langley Research Center, Hampton, Virginia. Results of the test indicated that the device did successfully detect the clear air turbulence. Computer animation of the clear air turbulence (CAT) detection system known as the 'Airborne Coherent LiDAR for Advanced In-flight Measurement' was tested aboard the National Science Foundation L-188 Lockheed Electra.

  16. Martin Schwarzschild (1912 - 1997)

    NASA Astrophysics Data System (ADS)

    Pfau, Werner

    The Chairman of the Astronomische Gesellschaft honored Martin Schwarzschild, who was the first to be presented with the Karl Schwarzschild Medal of the Astronomische Gesellschaft in 1957. An account of his life and work is given.

  17. IRIDIUM (R): A Lockheed transition to commercial space

    NASA Technical Reports Server (NTRS)

    Tadano, Thomas N.

    1995-01-01

    At Lockheed Missiles & Space Company, the IRIDIUM commercial space program is dramatically revolutionizing spacecraft development and manufacturing processes to reduce cost while maintaining quality and reliability. This report includes the following sections: an overview of the IRIDIUM system, the Lockheed IRIDIUM project and challenges; cycle-time reduction through production reorganization; and design for manufacturing and quality.

  18. Lockheed sensor test facility: a 1990 update

    NASA Astrophysics Data System (ADS)

    LaCroix, Leonard V.; Smietanowska, Bonnie S.

    1990-09-01

    Since it was first introduced to the public in the early 1980's, the Lockheed Sensor Test Facility (STF) in Sunnyvale, California, has undergone a dramatic transformation from a highly labor intensive experiment to a fully automated, state-ofthe-art production LWIR sensor calibration laboratory. Radiometric traceability is assured with the first blackbody calibration by the National Institute of Standards and Technology (NIST-formerly NBS), and the optical system has been thoroughly revamped to provide diffraction-limited performance in the infrared at wavelengths above 6 μm for LWIR sensors with input apertures to 15 cm. New, modern refrigeration equipment has been added, and the vacuum system has been thoroughly overhauled to provide a simulated exoatmospheric environment as low as 20 K absolute temperature and 10-8 torr absolute pressure. This report traces the evolution of the STF during the last two years, and details the many enhancements and capabilities introduced in that period. The results of a two-year characterization and calibration activity are summarized, and a full description of capabilities and services available to the LWIR sensor community is included.

  19. Martin Gardner's Mistake

    ERIC Educational Resources Information Center

    Khovanova, Tanya

    2012-01-01

    When Martin Gardner first presented the Two-Children problem, he made a mistake in its solution. Later he corrected the error, but unfortunately the incorrect solution is more widely known than his correction. In fact, a Tuesday-Child variation of this problem went viral in 2010, and the same flaw keeps reappearing in proposed solutions of that…

  20. Lockheed P-38 Lightning in flight

    NASA Technical Reports Server (NTRS)

    1943-01-01

    The P-38 shown in this photo was one of the fighters built in the late 1930s and early 1940s that experienced compressibility effects. In steep dives, these aircraft could reach speeds above Mach 0.75 (called transonic). At transonic speeds, air in front of the wings became compressed and reached supersonic speeds as it flowed over the wings, forming a shock wave. This resulted in an increase in drag and a decrease in lift. Another result was the movement of the wing's center of lift to the rear, forcing the aircraft to rotate so that the nose moved downward and it went into a steep dive. Pilots found that that their aircraft would not pull out of this dive. When they attempted to pull out, they found the control stick, as one pilot put it, 'was cast in about two feet of concrete.' In some cases, the airplanes crashed or broke up in the denser air as they approached the ground. In other cases, the pilots were able to pull out of the dive. These accidents and near misses reinforced the popular belief in a 'sound barrier.' The need for data at speeds near that of sound and the inability of wind tunnels at the time to provide it would lead to the construction and flight of the X-1 and D-558 research aircraft. The Lockheed P-38 Lightning was one of the best-known Army Air Forces fighters that flew in World War II. It was already in mass production before the war started for the United States, and production lasted until 1945. With a wingspan of 52 feet; a length of 37 feet, 10 inches; and a height of 9 feet, 10 inches, the P-38s had maximum speeds ranging from 390 miles per hour for the basic P-38 to 414 mph for the P-38L. Except for the M model (a two-seater), all the P-38s were single-seat pursuit and long-range escort aircraft.

  1. Lockheed T-33B (TV-2) Shooting Star

    NASA Technical Reports Server (NTRS)

    1951-01-01

    Lockheed T-33B (TV-2) Shooting Star: This Lockheed TV-2 flew with the NACA and NASA for nine years in the 1950s. The nose of this aircraft has been modified to that of an RT-33, the camera ports just visible as dark panels behind the nose, ahead of the intakes. Below the nose has been added a small fin for variable yaw damping experiments performed at Wallops Island.

  2. VIEW OF OFFICE CREATED FOR MARTIN LUTHER KING JR IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF OFFICE CREATED FOR MARTIN LUTHER KING JR IN 1957-58, LOOKING TOWARD THE REAR DOOR. THE DESK IS A PIECE OF THE ORIGINAL FURNITURE. - Dexter Avenue King Memorial Baptist Church, 454 Dexter Avenue, Montgomery, Montgomery County, AL

  3. VIEW OF THE OFFICE CREATED FOR MARTIN LUTHER KING JR, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF THE OFFICE CREATED FOR MARTIN LUTHER KING JR, LOOKING TOWARDS MAIN DOOR INTO SECRETARY'S OFFICE. - Dexter Avenue King Memorial Baptist Church, 454 Dexter Avenue, Montgomery, Montgomery County, AL

  4. Health Effects Profiles for Searching Selected Lockheed DIALOG Data Bases.

    ERIC Educational Resources Information Center

    Clement, Linda Lee

    This preliminary study attempted to determine the most effective search strategies for the topic "health effects" in relation to specific chemicals and/or pollutants--in this case, asbestos--for each of five selected Lockheed DIALOG data bases: BIOSIS Previews, Chemical Abstracts Condensates (Chemcon), NTIS, Enviroline, and Pollution Abstracts.…

  5. Turbulence model development and application at Lockheed Fort Worth Company

    NASA Technical Reports Server (NTRS)

    Smith, Brian R.

    1995-01-01

    This viewgraph presentation demonstrates that computationally efficient k-l and k-kl turbulence models have been developed and implemented at Lockheed Fort Worth Company. Many years of experience have been gained applying two equation turbulence models to complex three-dimensional flows for design and analysis.

  6. Martin Hall Receives Inventors Award

    NASA Technical Reports Server (NTRS)

    1965-01-01

    In this photograph, Marshall Space Flight Center Director, Dr. Wernher von Braun, presents a Co-Inventor's award to MSFC employee Martin Hall of the Mechanical Engineering Laboratory during the NASA Anniversary ceremony.

  7. [Martin Luther's seizure disorder].

    PubMed

    Feldmann, H

    1989-01-01

    Martin Luther's diseases are well documented, because he used to discuss them freely in his letters. There is also a wealth of evidence through reports by his friends. Most of his diseases were common and well known to the contemporary physicians, who accordingly interpreted them correctly: bladder stones, chronic constipation, hemorrhoids. Luther's death obviously was due to a coronary thrombosis. During the last 19 years of his life, in addition to these "natural diseases", Luther also suffered from recurring attacks of a peculiar symptomatology. Luther himself and his friends considered these seizures to be no "natural disease", but Satan punching his flesh, and he compared them to St. Paul's disease (2. Cor. 12). The first of these attacks occurred on July 6, 1527, when Luther was 43 years of age. It began with a roaring tinnitus in his left ear, which increased dramatically and seemed to occupy the left half of his head. Then a state of sickness and collapse followed, however, consciousness was retained throughout the whole period. After a night's rest all the symptoms had subsided, except the tinnitus, which, from that day on, continued for all the following years in varying intensity. Similar attacks with increase of the tinnitus and vertigo as the leading symptoms, seized Luther at irregular intervals and distressed him extremely. Former investigators of Luther's diseases interpreted these attacks as manifestations of a psychiatric disorder and a chronic inflammatory disease of the middle ear. The present detailed study reveals that it was a typical case of Menière's disease of the left ear manifesting itself more than 330 years before Menière's classical observation.

  8. [Martin Luther's seizure disorder].

    PubMed

    Feldmann, H

    1989-01-01

    Martin Luther's diseases are well documented, because he used to discuss them freely in his letters. There is also a wealth of evidence through reports by his friends. Most of his diseases were common and well known to the contemporary physicians, who accordingly interpreted them correctly: bladder stones, chronic constipation, hemorrhoids. Luther's death obviously was due to a coronary thrombosis. During the last 19 years of his life, in addition to these "natural diseases", Luther also suffered from recurring attacks of a peculiar symptomatology. Luther himself and his friends considered these seizures to be no "natural disease", but Satan punching his flesh, and he compared them to St. Paul's disease (2. Cor. 12). The first of these attacks occurred on July 6, 1527, when Luther was 43 years of age. It began with a roaring tinnitus in his left ear, which increased dramatically and seemed to occupy the left half of his head. Then a state of sickness and collapse followed, however, consciousness was retained throughout the whole period. After a night's rest all the symptoms had subsided, except the tinnitus, which, from that day on, continued for all the following years in varying intensity. Similar attacks with increase of the tinnitus and vertigo as the leading symptoms, seized Luther at irregular intervals and distressed him extremely. Former investigators of Luther's diseases interpreted these attacks as manifestations of a psychiatric disorder and a chronic inflammatory disease of the middle ear. The present detailed study reveals that it was a typical case of Menière's disease of the left ear manifesting itself more than 330 years before Menière's classical observation. PMID:2529669

  9. Lockheed L-1101 avionic flight control redundant systems

    NASA Technical Reports Server (NTRS)

    Throndsen, E. O.

    1976-01-01

    The Lockheed L-1011 automatic flight control systems - yaw stability augmentation and automatic landing - are described in terms of their redundancies. The reliability objectives for these systems are discussed and related to in-service experience. In general, the availability of the stability augmentation system is higher than the original design requirement, but is commensurate with early estimates. The in-service experience with automatic landing is not sufficient to provide verification of Category 3 automatic landing system estimated availability.

  10. CFD validation experiments at the Lockheed-Georgia Company

    NASA Technical Reports Server (NTRS)

    Malone, John B.; Thomas, Andrew S. W.

    1987-01-01

    Information is given in viewgraph form on computational fluid dynamics (CFD) validation experiments at the Lockheed-Georgia Company. Topics covered include validation experiments on a generic fighter configuration, a transport configuration, and a generic hypersonic vehicle configuration; computational procedures; surface and pressure measurements on wings; laser velocimeter measurements of a multi-element airfoil system; the flowfield around a stiffened airfoil; laser velocimeter surveys of a circulation control wing; circulation control for high lift; and high angle of attack aerodynamic evaluations.

  11. The Words of Martin Luther King, Jr.

    ERIC Educational Resources Information Center

    Today's Education, 1979

    1979-01-01

    Excerpts from speeches by Dr. Martin Luther King, Jr., are reprinted. Topics discussed include discrimination, the South, education, nonviolent resistance, poverty, economic opportunity, and world peace. (LH)

  12. Lockheed L-1011 in flight - Wing vortex study

    NASA Technical Reports Server (NTRS)

    1977-01-01

    Dryden Flight Research Center, Edwards, California, conducted extensive wake vortice tests beginning in the 1970's. These wake vortex problems first became a serious concern when large jetliners were first introduced. The aircraft's trailing vortices, created by any large-bodied aircraft, were powerful enough to cause problems for business jets and even other airliners. Dryden became interested in vortex research both for safety and as a matter of aerodynamics. A wingtip vortex seriously reduces efficency, causing drag, and therefore a consequent penalty in fuel consumption and performance. The majority of the tests were conducted using spoilers on a Boeing 747-100, which NASA had just acquired for the Space Shuttle Approach and Landing (ALT) tests. With the two spoilers on the outer panels of each wing extended, the vortices were greatly reduced and the chase aircraft could safely fly five kilometers behind the large aircraft, compared to 15 kilometers with no spoilers. Dryden's 747 wake vortex studies clearly indicated that the use of spoilers could reduce the severity of wake vortices. In July, 1977, the center began a brief series of tests on a Lockheed L-1011 Tristar to determine if the spoiler that worked so well on the 747 could be applied to other wide-body aircraft as well. The test showed that while spoilers on the Tristar could reduce wake vortices, they were not as effective in doing so as the spoilers on the 747. NASA is continuing wake vortex studies to this day. These projects can be expected to improve the operational safety of many future aircraft. This photo demonstrates the L-1011 with smoke generators operating, to visualize the vortex flows.

  13. Connect the Book. Martin's Big Words: The Life of Dr. Martin Luther King, Jr.

    ERIC Educational Resources Information Center

    Brodie, Carolyn S.

    2005-01-01

    In honor of Martin Luther King, Jr. Day, this month's featured book is "Martin's Big Words: The Life of Dr. Martin Luther King, Jr." The book was written by Doreen Rappaport and illustrated by Bryan Collier (Jump at the Sun, 2001. 40p. ISBN 0786807148). This pictorial biography of the world-renowned civil rights leader has one of the most striking…

  14. Straight talk with... Martin Stratmann.

    PubMed

    Stratmann, Martin

    2014-07-01

    The 83 institutes and research facilities of the Max Planck Society, established in 1948, include some of the world's leading scholars in the life sciences, including 17 Noble Prize winners, and publish 15,000 research papers annually. For the past 18 years, biologists have stood at the helm of the prestigious German organization. But last month, an electrochemist and materials scientist, Martin Stratmann, began a six-year term as president of the Munich-based society.Stratmann, who is 60, served as the director of the Max Planck Institute for Iron Research in Düsseldorf since 2000, where he helped develop self-healing coatings that can protect steels and other metals from rust. Stratmann spoke with David Levine about his vision for the Max Planck Society and about what the change of guard will mean for biomedical research. The conversation has been edited for clarity. PMID:24999934

  15. [Medical history of Martin Luther].

    PubMed

    Takigami, Tadashi

    2011-12-01

    Martin Luther achieved great success in religious reformation, though he was said to have suffered from many kinds of diseases during his lifetime. Unfortunately, however, his medical history has never been reported in Japan. Since the second half of his thirties, he was suffering from severe constipation, causing hemorrhoids and anal prolapse. At the beginning of his forties he had vertigo, tinnitis and headaches, which were the signs of chronic purlent otitis media and ended in left otorrhea and pyorrhea of the left mastoiditis. Nearly at the same time, he started to suffer from anginal pain, colic and dysuria due to urinary uric acid stones, gout and left leg ulcer, which were all caused by metabolic syndromes. The last 1/3 of his life was affected by the shadow of diseases, and his religious activities were frequently disturbed. He died from myocardial infarction at the age 63, in February 1546.

  16. Martin Schwarzschild (1912-1997)

    NASA Astrophysics Data System (ADS)

    Trimble, V.

    1997-12-01

    Martin Schwarzschild, the ASP Bruce Medalist for 1965, died on 10 April 1997. A refugee from Hitler's Germany who firmly embraced his adopted country, Schwarzschild not only solved a number of fundamental problems in stellar structure and evolution but also taught the rest of the astronomical community how to do so with his 1958 text, Structure and Evolution of the Stars. At about the time of his 1979 retirement, he turned to a completely different question of how to model spheroidal galaxies self-consistently and sent another generation of students and collaborators forward toward the still somewhat distant solution. It is impossible for anyone who ever interacted with Schwarzschild to remain entirely solemn when remembering him. (SECTION: Obituary)

  17. [Medical history of Martin Luther].

    PubMed

    Takigami, Tadashi

    2011-12-01

    Martin Luther achieved great success in religious reformation, though he was said to have suffered from many kinds of diseases during his lifetime. Unfortunately, however, his medical history has never been reported in Japan. Since the second half of his thirties, he was suffering from severe constipation, causing hemorrhoids and anal prolapse. At the beginning of his forties he had vertigo, tinnitis and headaches, which were the signs of chronic purlent otitis media and ended in left otorrhea and pyorrhea of the left mastoiditis. Nearly at the same time, he started to suffer from anginal pain, colic and dysuria due to urinary uric acid stones, gout and left leg ulcer, which were all caused by metabolic syndromes. The last 1/3 of his life was affected by the shadow of diseases, and his religious activities were frequently disturbed. He died from myocardial infarction at the age 63, in February 1546. PMID:22586892

  18. Updating Martin's global extinction model

    NASA Astrophysics Data System (ADS)

    Gillespie, Richard

    2008-12-01

    Australia has been cited as a weak link in anthropogenic models of megafauna extinction, but recent work suggests instead that the evidence for rapid extinction shortly after human arrival is robust. The global model is revisited, based on the contention that late Pleistocene megafauna extinctions took place rapidly on islands, and some islands (such as Australia and the Americas) are much larger than others. Modern dating methods are increasingly able to refine chronologies, and careful scrutiny suggests that hundreds of dates should be deleted from archives. An updated summary of results from New Zealand, North America and Australia is presented, with a brief discussion on why temperate refugia offering protection from climate change ultimately did not work, strongly supporting the global extinction hypothesis pioneered by Paul Martin.

  19. Straight talk with... Martin Stratmann.

    PubMed

    Stratmann, Martin

    2014-07-01

    The 83 institutes and research facilities of the Max Planck Society, established in 1948, include some of the world's leading scholars in the life sciences, including 17 Noble Prize winners, and publish 15,000 research papers annually. For the past 18 years, biologists have stood at the helm of the prestigious German organization. But last month, an electrochemist and materials scientist, Martin Stratmann, began a six-year term as president of the Munich-based society.Stratmann, who is 60, served as the director of the Max Planck Institute for Iron Research in Düsseldorf since 2000, where he helped develop self-healing coatings that can protect steels and other metals from rust. Stratmann spoke with David Levine about his vision for the Max Planck Society and about what the change of guard will mean for biomedical research. The conversation has been edited for clarity.

  20. Understanding regulatory networks requires more than computing a multitude of graph statistics. Comment on "Drivers of structural features in gene regulatory networks: From biophysical constraints to biological function" by O.C. Martin et al.

    NASA Astrophysics Data System (ADS)

    Tkačik, Gašper

    2016-07-01

    The article by O. Martin and colleagues provides a much needed systematic review of a body of work that relates the topological structure of genetic regulatory networks to evolutionary selection for function. This connection is very important. Using the current wealth of genomic data, statistical features of regulatory networks (e.g., degree distributions, motif composition, etc.) can be quantified rather easily; it is, however, often unclear how to interpret the results. On a graph theoretic level the statistical significance of the results can be evaluated by comparing observed graphs to "randomized" ones (bravely ignoring the issue of how precisely to randomize!) and comparing the frequency of appearance of a particular network structure relative to a randomized null expectation. While this is a convenient operational test for statistical significance, its biological meaning is questionable. In contrast, an in-silico genotype-to-phenotype model makes explicit the assumptions about the network function, and thus clearly defines the expected network structures that can be compared to the case of no selection for function and, ultimately, to data.

  1. 14. Historic American Buildings Survey, Plate # 54, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. Historic American Buildings Survey, Plate # 54, 'Wohnhaus Martin, Buffalo, N. Y. in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911), MR. MARTIN'S SISTER'S HOUSE. - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  2. Transcript of Interview: Franklin D. Martin

    NASA Technical Reports Server (NTRS)

    McCurdy, Howard E.

    1992-01-01

    This document is a transcript of an interview given by Howard E. McCurdy to Franklin D. Martin. Martin gives details on his background including information on his family, education, and career path, his thoughts on the human space exploration initiative and the mission to the Moon, his presentation to the Vice President about Civil Space Exploration: The Lunar Base, and President Kennedy's pronouncement of America's intent to go to the Moon and the effects of the speech.

  3. Compression Buckling Behavior of Large-Scale Friction Stir Welded and Riveted 2090-T83 Al-Li Alloy Skin-Stiffener Panels

    NASA Technical Reports Server (NTRS)

    Hoffman, Eric K.; Hafley, Robert A.; Wagner, John A.; Jegley, Dawn C.; Pecquet, Robert W.; Blum, Celia M.; Arbegast, William J.

    2002-01-01

    To evaluate the potential of friction stir welding (FSW) as a replacement for traditional rivet fastening for launch vehicle dry bay construction, a large-scale friction stir welded 2090-T83 aluminum-lithium (Al-Li) alloy skin-stiffener panel was designed and fabricated by Lockheed-Martin Space Systems Company - Michoud Operations (LMSS) as part of NASA Space Act Agreement (SAA) 446. The friction stir welded panel and a conventional riveted panel were tested to failure in compression at the NASA Langley Research Center (LaRC). The present paper describes the compression test results, stress analysis, and associated failure behavior of these panels. The test results provide useful data to support future optimization of FSW processes and structural design configurations for launch vehicle dry bay structures.

  4. Martin Brasier (1947-2014): astrobiologist

    NASA Astrophysics Data System (ADS)

    McMahon, Sean; Cockell, Charles

    2015-10-01

    How did life on Earth begin? What does the search for life in the distant past tell us about the search for life on distant planets? How should the most ancient and ambiguous putative biosignatures be critically evaluated? How did the Earth-life system evolve through the dramatic upheavals of the Precambrian-Cambrian boundary? When and why did eukaryotes begin to produce mineralized skeletons? These are among the astrobiological questions to which palaeobiologist Martin Brasier made profound contributions in a career spanning nearly half a century and tragically cut short late last year. Here, we summarize and celebrate Martin's contributions to astrobiology.

  5. DIALOG Lab Workbook. Training Exercises for the Lockheed DIALOG Information Retrieval Service.

    ERIC Educational Resources Information Center

    Bourne, Charles P.

    This workbook is designed primarily for graduate library school students in a supervised laboratory setting as an adjunct to a formal course on computer based reference services. The DIALOG system has the capability to search several large on line files, and the workbook is designed to be used in conjunction with the Lockheed DIALOG Manual. Eight…

  6. 76 FR 45738 - Regulated Navigation Area; Pacific Sound Resources and Lockheed Shipyard EPA Superfund Cleanup...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-01

    ... Federal Register (73 FR 3316). Public Meeting We do not now plan to hold a public meeting. But you may... navigation area (RNA) on a portion of Elliott Bay in Seattle, Washington. The RNA would protect the seabed in... Resources (PSR) and Lockheed Shipyard superfund cleanup remediation efforts. This RNA would...

  7. Martin Trow on British Higher Education

    ERIC Educational Resources Information Center

    Silver, Harold

    2009-01-01

    For almost half a century from the early 1960s Martin Trow was the most persistent American commentator on British higher education. He analysed the main reports from Robbins to Dearing, developed and applied a language for discussing common problems amongst different systems, and focused on the uncertain progress of the UK to mass higher…

  8. Rejoinder to Guterman, Martin, and Kopp

    ERIC Educational Resources Information Center

    Hansen, James T.

    2012-01-01

    In their reply to the author's keystone article (Hansen, 2012), Guterman, Martin, and Kopp (2012) charge that the author's integrative framework was not sufficiently integrative. They also argue that his proposal results in logical contradictions and the mind-body problem. The author responds by noting that his proposal fully integrates the…

  9. Views of Dr. Martin Luther King, Jr.

    ERIC Educational Resources Information Center

    Davis, Alan H.

    1990-01-01

    Discusses views of Martin Luther King, Jr., including concepts of human rights, related counseling approaches, and ethics. Claims King's views provide helpful insights for counselors and clients. Concludes King invited individuals to view challenging life situations as moral opportunities. (Author/ABL)

  10. Books about Martin Luther King, Jr.

    ERIC Educational Resources Information Center

    Woll, Christina B.

    1990-01-01

    Briefly reviews three recent biographies of Martin Luther King, Jr. that also deal with the civil rights movement. Summarizes contents and identifies reading ability levels appropriate for elementary and junior high students. Recommends six additional King biographies for children. Also endorses two filmstrips on King and the movement. Gives full…

  11. Martin Luther King, Jr. Teacher's Resource Manual.

    ERIC Educational Resources Information Center

    Connecticut State Dept. of Education, Hartford.

    This Connecticut teachers' manual on Martin Luther King, Jr. includes: (1) teacher background information; (2) five excerpts from King's speeches; (3) four themes for lesson plans; and (4) sample lesson plans. The teacher's background information provides biographical sketches of King and his precursors. The five speeches reproduced here are "I've…

  12. 8. Historic American Buildings Survey, Plate # 52, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. Historic American Buildings Survey, Plate # 52, 'Wohnhaus Martin, Buffalo, N. Y. Westseite und Einzelheit der Westseite' in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911). - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  13. Martin Stutzmann: Editor, Teacher, Scientist and Friend

    NASA Astrophysics Data System (ADS)

    Cardona, Manuel

    2005-03-01

    On 2 January 1995 Martin Stutzmann became Editor-in-Chief of physica status solidi, replacing Professor E. Gutsche, who had led the journal through the stormy period involving the fall of the Iron Curtain, the unification of Germany and the change in its Eastern part, where physica status solidi was based, from socialism as found in the real world (a German concept) to real world capitalism. In 1995 it was thought that the process had been completed (we should have known better!) and after the retirement of Prof. Gutsche the new owners of physica status solidi (Wiley-VCH) decided that a change in scientific management was desirable to adapt to the new socio-political facts and to insure the scientific continuity of the journal.Martin had moved in 1993 from my department at the Max-Planck-Institute to Munich where he soon displayed a tremendous amount of science man- agement ability during the build-up of the Walter Schottky Institute. The search for a successor as Edi- tor-in-Chief was not easy: the job was not very glamorous after the upheavals which had taken place in the editorial world following the political changes. Somebody in the Editorial Boards must have suggested Martin Stutzmann. I am sure that there was opposition: one usually looks for a well-established person ready to leave his direct involvement in science and take up a new endeavor of a more administrative nature. Nevertheless, the powers that be soon realized that Martin was an excellent, if somewhat unconventional candidate who had enough energy to remain a topnotch scientist and to lead the journal in the difficult times ahead: he was offered the job. In the negotiations that followed, he insisted in getting the administrative structures that would allow him to improve the battered quality of the journal and to continue his scientific productivity. Today we are happy to see that he succeeded in both endeavors. The journal has since grown in size and considerably improved its quality.Martin

  14. 15. Historic American Buildings Survey, Plate # 55, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. Historic American Buildings Survey, Plate # 55, 'Wohnhaus Martin, Buffalo, N. Y. Grundrisse des Haupt und Obergeschosses' in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911), PLAN OF THE FIRST AND SECOND FLOORS, MR. MARTIN'S SISTER'S HOUSE. - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  15. An Improved Version of the NASA-Lockheed Multielement Airfoil Analysis Computer Program

    NASA Technical Reports Server (NTRS)

    Brune, G. W.; Manke, J. W.

    1978-01-01

    An improved version of the NASA-Lockheed computer program for the analysis of multielement airfoils is described. The predictions of the program are evaluated by comparison with recent experimental high lift data including lift, pitching moment, profile drag, and detailed distributions of surface pressures and boundary layer parameters. The results of the evaluation show that the contract objectives of improving program reliability and accuracy have been met.

  16. Martin J. Klein: From Physicist to Historian

    NASA Astrophysics Data System (ADS)

    Hu, Danian

    2012-12-01

    To his friends, colleagues, and students, Martin Klein was a gentle and modest man of extraordinary integrity whose stellar accomplishments garnered him many honors. I sketch his life and career, in which he transformed himself from a theoretical physicist at Columbia University, the Massachusetts Institute of Technology, and the Case Institute of Technology into a historian of physics while on leave at the Dublin Institute for Advanced Study and the University of Leiden and then pursued this field full time at Yale University.

  17. Polarized Light Experiment, Presa Don Martin, Mexico

    NASA Technical Reports Server (NTRS)

    1989-01-01

    This is a single scene from a pair (frames 021 and 024) to study the effects of polarized light in Earth Observations. One scene was exposed with vertically polarized light, the other, horizontally. The subject in this study, is a lake behind Presa (dam) Don Martin (27.5N, 100.5W) on thge edge of the Rio Grande Plain near it's boundry with the Sierra Madre Oriental in Coahuila, Mexico.

  18. Jean-Martin Charcot. 1825 to 1893.

    PubMed

    Clanet, M

    2008-06-01

    During the 31 years of his working life, Jean-Martin Charcot built up an exceptional career in Salpétrière hospital, and was a pioneer in different fields. He developed an organized teaching and research centre, contributed to increase the medical knowledge with a systematic use of physiology and pathology besides a rigorous clinical analysis, he founded geriatry and neurology and finally tried to create a scientific psychological approach for hysteria.

  19. Particle contamination from Martin Optical Black

    NASA Astrophysics Data System (ADS)

    Young, P. J.; Noll, R.; Andreozzi, L.; Hope, J.

    The design of the barrel baffle of the Infrared Astronomical Satellite (IRAS) Optical Subsystem to minimize production of particulate contamination is described. The configuration of the 50-inch long, 28.5-inch diameter baffle required pop-rivet assembly after coating with Martin Optical Black for stray light suppression. An experiment to determine the contamination produced at assembly led to the modification of the baffle construction to preclude such damage to the coated surfaces.

  20. Martin Stutzmann: Editor, Teacher, Scientist and Friend

    NASA Astrophysics Data System (ADS)

    Cardona, Manuel

    2005-02-01

    On 2 January 1995 Martin Stutzmann became Editor-in-Chief of physica status solidi, replacing Professor E. Gutsche, who had led the journal through the stormy period involving the fall of the Iron Curtain, the unification of Germany and the change in its Eastern part, where physica status solidi was based, from socialism as found in the real world (a German concept) to real world capitalism. In 1995 it was thought that the process had been completed (we should have known better!) and after the retirement of Prof. Gutsche the new owners of physica status solidi (Wiley-VCH) decided that a change in scientific management was desirable to adapt to the new socio-political facts and to insure the scientific continuity of the journal.Martin had moved in 1993 from my department at the Max-Planck-Institute to Munich where he soon displayed a tremendous amount of science man- agement ability during the build-up of the Walter Schottky Institute. The search for a successor as Edi- tor-in-Chief was not easy: the job was not very glamorous after the upheavals which had taken place in the editorial world following the political changes. Somebody in the Editorial Boards must have suggested Martin Stutzmann. I am sure that there was opposition: one usually looks for a well-established person ready to leave his direct involvement in science and take up a new endeavor of a more administrative nature. Nevertheless, the powers that be soon realized that Martin was an excellent, if somewhat unconventional candidate who had enough energy to remain a topnotch scientist and to lead the journal in the difficult times ahead: he was offered the job. In the negotiations that followed, he insisted in getting the administrative structures that would allow him to improve the battered quality of the journal and to continue his scientific productivity. Today we are happy to see that he succeeded in both endeavors. The journal has since grown in size and considerably improved its quality.Martin

  1. Analysis of x-ray bright spots from triple and single combined Cu and Al planar wire arrays on the 1MA pulsed power generator at UNR

    NASA Astrophysics Data System (ADS)

    Safronova, A. S.; Kantsyrev, V. L.; Esaulov, A. A.; Ouart, N. D.; Yilmaz, M. F.; Weller, M. E.; Williamson, K. M.; Shlyaptseva, V.; Shrestha, I.; Osborne, G. C.; Coverdale, C. A.; Deeney, C.

    2008-11-01

    The recently discovered implosion features of double planar wire arrays, such as the two step precursor formation with the independent implosion of wire arrays made from different materials and bright spot generation in a central precursor column early in time [Kantsyrev et al, PoP 15, 030704 (2008)], led to new experiments with combined triple planar wire arrays (TPWA). Combined TPWA include three planar wire rows that are parallel to each other and made of either Cu or Al alloyed wires. New x-ray data for two configurations (Al/Cu/Al and Cu/Al/Cu) are considered and compared with each other, with the results from combined single planar wire arrays of the same materials, and with Cu uniform cylindrical wire arrays. Emphasis is made on the study of bright spot formation, which is a signature of implosions of planar wire arrays and can be significant for other wire array configurations as well. Work was supported by NNSA/DOE under Coop. Agr. DE-FC52-06NA27588, DE-FC52-06NA27586, and in part by DE-FC52-06NA27616. Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the US DOE under Contract DE-AC04-94AL85000.

  2. Martin Stutzmann: Editor, Teacher, Scientist and Friend

    NASA Astrophysics Data System (ADS)

    Cardona, Manuel

    2005-03-01

    On 2 January 1995 Martin Stutzmann became Editor-in-Chief of physica status solidi, replacing Professor E. Gutsche, who had led the journal through the stormy period involving the fall of the Iron Curtain, the unification of Germany and the change in its Eastern part, where physica status solidi was based, from socialism as found in the real world (a German concept) to real world capitalism. In 1995 it was thought that the process had been completed (we should have known better!) and after the retirement of Prof. Gutsche the new owners of physica status solidi (Wiley-VCH) decided that a change in scientific management was desirable to adapt to the new socio-political facts and to insure the scientific continuity of the journal.Martin had moved in 1993 from my department at the Max-Planck-Institute to Munich where he soon displayed a tremendous amount of science man- agement ability during the build-up of the Walter Schottky Institute. The search for a successor as Edi- tor-in-Chief was not easy: the job was not very glamorous after the upheavals which had taken place in the editorial world following the political changes. Somebody in the Editorial Boards must have suggested Martin Stutzmann. I am sure that there was opposition: one usually looks for a well-established person ready to leave his direct involvement in science and take up a new endeavor of a more administrative nature. Nevertheless, the powers that be soon realized that Martin was an excellent, if somewhat unconventional candidate who had enough energy to remain a topnotch scientist and to lead the journal in the difficult times ahead: he was offered the job. In the negotiations that followed, he insisted in getting the administrative structures that would allow him to improve the battered quality of the journal and to continue his scientific productivity. Today we are happy to see that he succeeded in both endeavors. The journal has since grown in size and considerably improved its quality.Martin

  3. Martin Stutzmann: Editor, Teacher, Scientist and Friend

    NASA Astrophysics Data System (ADS)

    Cardona, Manuel

    2005-02-01

    On 2 January 1995 Martin Stutzmann became Editor-in-Chief of physica status solidi, replacing Professor E. Gutsche, who had led the journal through the stormy period involving the fall of the Iron Curtain, the unification of Germany and the change in its Eastern part, where physica status solidi was based, from socialism as found in the real world (a German concept) to real world capitalism. In 1995 it was thought that the process had been completed (we should have known better!) and after the retirement of Prof. Gutsche the new owners of physica status solidi (Wiley-VCH) decided that a change in scientific management was desirable to adapt to the new socio-political facts and to insure the scientific continuity of the journal.Martin had moved in 1993 from my department at the Max-Planck-Institute to Munich where he soon displayed a tremendous amount of science man- agement ability during the build-up of the Walter Schottky Institute. The search for a successor as Edi- tor-in-Chief was not easy: the job was not very glamorous after the upheavals which had taken place in the editorial world following the political changes. Somebody in the Editorial Boards must have suggested Martin Stutzmann. I am sure that there was opposition: one usually looks for a well-established person ready to leave his direct involvement in science and take up a new endeavor of a more administrative nature. Nevertheless, the powers that be soon realized that Martin was an excellent, if somewhat unconventional candidate who had enough energy to remain a topnotch scientist and to lead the journal in the difficult times ahead: he was offered the job. In the negotiations that followed, he insisted in getting the administrative structures that would allow him to improve the battered quality of the journal and to continue his scientific productivity. Today we are happy to see that he succeeded in both endeavors. The journal has since grown in size and considerably improved its quality.Martin

  4. VizieR Online Data Catalog: Star-forming galaxies in near-IR (Martins+, 2013)

    NASA Astrophysics Data System (ADS)

    Martins, L. P.; Rodriguez-Ardila, A.; Diniz, S.; Riffel, R.; de Souza, R.

    2014-10-01

    The sample used here was presented in Martins et al. (2013MNRAS.431.1823M) and is a subset of the one presented in the magnitude-limited optical spectroscopic survey of nearby bright galaxies of Ho, Filippenko & Sargent (1995, Cat. J/ApJS/98/477, hereafter HO95). These galaxies are sources defined by Ho, Filippenko & Sargent (1997, Cat. J/ApJS/112/315, hereafter HO97) as those composed of 'nuclei dominated by emission lines from regions of active star formation (HII or starburst nuclei)'. In addition, five galaxies, classified as non-star forming in the optical, dominated by old stellar population and with no detected emission lines, were included as a control sample. All spectra were obtained at the NASA 3m Infrared Telescope Facility (IRTF) in two observing runs (2007 and 2008) - the same data from Martins et al. (2013MNRAS.431.1823M). (2 data files).

  5. Probing off-Hugoniot states in Ta, Cu, and Al to 10 Mbar compression with magnetically driven liner implosions

    NASA Astrophysics Data System (ADS)

    Mattsson, T. R.; Lemke, R. W.; Dolan, D. H.; Dalton, D. G.; Brown, J. L.; Robertson, G. R.; Knudson, M. D.; Harding, E.; Mattsson, A. E.; Carpenter, J. H.; Drake, R. R.; Cochrane, K.; Robinson, A. C.; Tomlinson, K.; Blue, B. E.

    We report on a technique for obtaining off-Hugoniot equation of state data on solid metals by a magnetically driven cylindrical liner implosion on Sandia's Z-machine (Z). The sample material is in an inner tube with an outer tube composed of Al that serves as the current carrying cathode. A shaped current pulse quasi-isentropically compresses the sample as it implodes. Photonic Doppler velocimetry measures the implosion velocity of the free inner surface of the sample material, and the explosion velocity of the return current anode free outer surface. The velocimetry measurements are used in conjunction with magnetohydrodynamic simulations and optimization to infer pressure and density in the sample. Results are presented for experiments on the Z-machine in which Ta, Cu, and Al samples were compressed to peak pressure 10 Mbar. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.

  6. Cleanliness verification process at Martin Marietta Astronautics

    NASA Astrophysics Data System (ADS)

    King, Elizabeth A.; Giordano, Thomas J.

    1994-06-01

    The Montreal Protocol and the 1990 Clean Air Act Amendments mandate CFC-113, other chlorinated fluorocarbons (CFC's) and 1,1,1-Trichloroethane (TCA) be banned from production after December 31, 1995. In response to increasing pressures, the Air Force has formulated policy that prohibits purchase of these solvents for Air Force use after April 1, 1994. In response to the Air Force policy, Martin Marietta Astronautics is in the process of eliminating all CFC's and TCA from use at the Engineering Propulsion Laboratory (EPL), located on Air Force property PJKS. Gross and precision cleaning operations are currently performed on spacecraft components at EPL. The final step of the operation is a rinse with a solvent, typically CFC-113. This solvent is then analyzed for nonvolatile residue (NVR), particle count and total filterable solids (TFS) to determine cleanliness of the parts. The CFC-113 used in this process must be replaced in response to the above policies. Martin Marietta Astronautics, under contract to the Air Force, is currently evaluating and testing alternatives for a cleanliness verification solvent. Completion of test is scheduled for May, 1994. Evaluation of the alternative solvents follows a three step approach. This first is initial testing of solvents picked from literature searches and analysis. The second step is detailed testing of the top candidates from the initial test phase. The final step is implementation and validation of the chosen alternative(s). Testing will include contaminant removal, nonvolatile residue, material compatibility and propellant compatibility. Typical materials and contaminants will be tested with a wide range of solvents. Final results of the three steps will be presented as well as the implementation plan for solvent replacement.

  7. 13. Historic American Buildings Survey, Plate # 51, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. Historic American Buildings Survey, Plate # 51, 'Wohnhaus Martin, Buffalo, N. Y. Gesellschaftszimmer und Speisezimmer' in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911), LEFT: RECEPTION ROOM, FIREPLACE ON NORTH WALL, RIGHT: DINING ROOM, VIEW TOWARD NORTHWEST. - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  8. 11. Historic American Buildings Survey, Plate # 53, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. Historic American Buildings Survey, Plate # 53, 'Wohnhaus Martin, Buffalo, N. Y. Wohnzimmer mit Heizkorper und Beleuchtung' in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911), LIVING ROOM NORTH SIDE, LOOKING TOWARDS DINING ROOM, DOORS TO PORCH AT RIGHT. - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  9. 12. Historic American Buildings Survey, Plate # 47, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. Historic American Buildings Survey, Plate # 47, 'Wohnhaus Martin, Buffalo, N. Y. Gewachshaus und Heizkorper mit Beleuchtung' in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911), LEFT: BOOKCASE IN LIBRARY OR LIVING ROOM WITH LIGHTS, RIGHT: CONSERVATORY (DEMOLISHED). - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  10. 10. Historic American Buildings Survey, Plate # 50, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. Historic American Buildings Survey, Plate # 50, 'Wohnhaus Martin, Buffalo, N. Y. Kamin in Wohnzimmer' in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911), FIREPLACE IN LIVING ROOM, WEST SIDE. - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  11. 9. Historic American Buildings Survey, Plate # 44, 'Wohnhaus Martin, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. Historic American Buildings Survey, Plate # 44, 'Wohnhaus Martin, Buffalo, N. Y. Grundriss des Hauptgeschosses' in Frank Lloyd Wright Ausgefuhrte Bauten (Berlin: Ernst Wasmuth A. G., 1911), PLAN OF THE MAIN FLOORS. - Darwin D. Martin House, 125 Jewett Parkway, Buffalo, Erie County, NY

  12. Better Informed, Still Skeptical: Response to Machalek and Martin

    ERIC Educational Resources Information Center

    Lucal, Betsy

    2010-01-01

    After accepting the editor's invitation to write a response to Richard Machalek and Michael W. Martin's "Evolution, Biology, and Society: A Conversation for the 21st-Century Sociology Classroom," the author took up their recommendation to learn more about recent work on biology and social behavior. She considered seriously Machalek and Martin's…

  13. A Response to Jane Sahi's "Dialogue as Education: Martin Buber"

    ERIC Educational Resources Information Center

    Baniwal, Vikas

    2014-01-01

    This article is inspired by Jane Sahi's commentary, "Dialogue as Education: Martin Buber," published under the feature "Classics with Commentary" in the Monsoon 2005 issue of "Contemporary Education Dialogue." I seek to further the discussion of the contributions of Martin Buber to the discourse of education through…

  14. The Newest Monument: The Martin Luther King, Jr. National Memorial

    ERIC Educational Resources Information Center

    Social Studies and the Young Learner, 2011

    2011-01-01

    This article features the newest monument, the Martin Luther King, Jr. National Memorial. The memorial on the National Mall in Washington, D.C., honoring Dr. Martin Luther King, Jr. will be an engaging landscape experience to convey four fundamental and recurring themes throughout Dr. King's life--democracy, justice, hope, and love. Natural…

  15. Summary of V-G and VGH Data Collected on Lockheed Electra Airplanes During Airplane Operations

    NASA Technical Reports Server (NTRS)

    Jewel, Joseph W., Jr.; Fetner, Mary W.

    1961-01-01

    Data obtained by NASA VGH and V-G recorders on several Lockheed Electra airplanes operated over three domestic routes have been analyzed to determine the in-flight accelerations, airspeed practices, and landing accelerations experienced by this particular airplane. The results indicate that the accelerations caused by gusts and maneuvers are comparable to corresponding results for piston-engine transport airplanes. Oscillatory accelerations (apparently caused by the autopilot or control system) appear to occur about one-tenth as frequently as accelerations due to gusts. Airspeed operating practices in rough air generally follow the trends shown by piston-engine transports in that there is no significant difference between the average airspeed in rough or smooth air. Placard speeds were exceeded more frequently by the Electra airplane than by piston-engine transport airplanes. Generally, the landing-impact accelerations were higher than those for piston-engine transports.

  16. The common case study: Lockheed design of a supersonic cruise vehicle

    NASA Technical Reports Server (NTRS)

    Clauss, J. S., Jr.; Hays, A. P.; Wilson, J. R.

    1978-01-01

    The objective was to compare the characteristics of SSTs designed for the same mission by Lockheed, McDonnell Douglas, British Aerospace (U.K.), Aerospatiale (France), and the USSR. This comparison was to be used to calibrate parametric design studies of the tradeoff between SST direct operating cost (DOC) and noise levels at the FAR 36 certification points. The guidelines for this common case study were to design an aircraft with the following mission: payload 23 247 kg (51 250 lbm), range - 7000 km (3780 n. mi.), and cruise Mach number - 2.2. Field length was constrained to 3505 m (11 500 ft). Other airfield constraints and fuel reserves were also specified, but no noise constraints were applied.

  17. [Jean-Martin Charcot in German neurology].

    PubMed

    Lehmann, H C; Hartung, H-P; Kieseier, B C

    2004-02-01

    Jean-Martin Charcot (1825-1893), well known as the founder of modern neurology, was the most celebrated neurologist in the nineteenth century. His international success stemmed not only from mastery descriptions of various neurological disorders but also from his many contacts with scientists all over the world. The aim of this article is to review Charcot's ambivalent relationship to German neuropsychiatry of the time and to examine the German reception of his personality and work. Wilhelm Erb, Ludwig Hirt, Ernst von Leyden, Max Nonne, Adolph Strümpell, and other German physicians cultivated -to varying degrees - professional contacts with Charcot and, based on the fascination of his personality and significance of his work, were long and intensively influenced by the Salpêtrière school. The extent of their admiration became apparent in 1882 by the award of an honorary doctorate to Charcot by the University of Würzburg. Along with increasingly severe criticism of Charcot's research on hysteria and hypnosis, most German neuropsychiatrists became estranged, without neglecting his importance to the development of neurology in Germany.

  18. CALF/JAST X-32 test program: the LSPM (Large Scale Powered Model), Lockheed's concept for a

    NASA Technical Reports Server (NTRS)

    1996-01-01

    CALF/JAST X-32 test program: the LSPM (Large Scale Powered Model), Lockheed's concept for a tri-service aircraft (Air Force, Navy, Marines) CALF (Common Affordable Lightweight Fighter) as part of the Department of Defense's Joint Advanced Strike Technology (JAST) is being tested in the 80x120ft w.t. test-930 with rear horizontal stabilizer

  19. Flight Measurements of the Flying Qualities of a Lockheed P-80A Airplane (Army No. 44-85099) - Stalling Characteristics

    NASA Technical Reports Server (NTRS)

    Anderson, Seth B.; Cooper, George E.

    1947-01-01

    This report contains the flight-test results of the stalling characteristics measured during the flying-qualities investigation of the Lockheed P-8OA airplane (Army No. 44-85099). The tests were conducted in straight and turning flight with and without wing-tip tanks. These tests showed satisfactory stalling characteristics and adequate stall warning for all configurations and conditions tested.

  20. Photocopy of photograph (from Mrs. Martin, grandniece of John French, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Photocopy of photograph (from Mrs. Martin, grandniece of John French, Clinton, Missouri) Circa 1900, photographer unknown JOHN AND ALMIRA FRENCH IN FRONT OF WEST AND SOUTH FACADES - John French Farm, South Grand River, Deepwater, Henry County, MO

  1. 6. FLAME DEFLECTOR, VIEW TOWARDS NORTHWEST. Glenn L. Martin ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. FLAME DEFLECTOR, VIEW TOWARDS NORTHWEST. - Glenn L. Martin Company, Titan Missile Test Facilities, Captive Test Stand D-2, Waterton Canyon Road & Colorado Highway 121, Lakewood, Jefferson County, CO

  2. 7. FLAME DEFLECTOR, VIEW TOWARDS SOUTHWEST. Glenn L. Martin ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. FLAME DEFLECTOR, VIEW TOWARDS SOUTHWEST. - Glenn L. Martin Company, Titan Missile Test Facilities, Captive Test Stand D-2, Waterton Canyon Road & Colorado Highway 121, Lakewood, Jefferson County, CO

  3. 3. FIRST FLOOR, FRONT ROOM (WHERE MARTIN LUTHER KING MADE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. FIRST FLOOR, FRONT ROOM (WHERE MARTIN LUTHER KING MADE PLANS FOR HIS MOVEMENT) - Penn School Historic District, Arnett House, SC Route 37, 1 mile South of Frogmore, St. Helena Island, Frogmore, Beaufort County, SC

  4. 5. Photocopy of photograph (from V. Covert Martin Collection, Stockton, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Photocopy of photograph (from V. Covert Martin Collection, Stockton, California) Photographer unknown, Date unknown EXTERIOR, SHOWING RAMPARTS - Sutter's Fort, L & Twenty-Seventh Streets, Sacramento, Sacramento County, CA

  5. 1. Photocopy of photograph (from V. Covert Martin Collection, Stockton, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Photocopy of photograph (from V. Covert Martin Collection, Stockton, California, Date unknown) Photographer unknown, Date unknown EXTERIOR, GENERAL VIEW FROM AN ANGLE - I. O. O. F. Hall, Big Oak Flat, Tuolumne County, CA

  6. Owen Martin Phillips (1930-2010)

    NASA Astrophysics Data System (ADS)

    Olson, Peter

    2011-02-01

    Owen Martin Phillips, a pioneer in geophysical fluid dynamics, died at home on 13 October 2010 in Chestertown, Md., at the age of 79. To his many friends and colleagues, Phillips was an inspirational and gracious person who combined a deep intellect, a lively spirit, and a generous heart that matched his passionate interest in the geophysical sciences. Phillips was born on 30 December 1930 in Parramatta, N. S. W., Australia. In 1948 he enrolled in the University of Sydney, where he earned a B.S. in applied mathematics in 1952. That same year, he joined the Cavendish Laboratory at Cambridge University as a research student, where he began to apply to the ocean concepts in turbulent flow recently developed by Andrei Kolmogorov, G. I. Taylor, and George Batchelor. While attending the 1956 celebration of Taylor's seventieth birthday, Phillips heard Fritz Ursell declare that “the process by which ocean waves are generated by the wind cannot be regarded as known.” In 1957 the Journal of Fluid Mechanics contained two remarkable papers offering contrasting theories for ocean wave generation. One paper, by the applied mathematician John Miles (J. Fluid Mech., 2(5), 417-445, 1957), proposed that energy transfer from the air to the sea occurs at a critical layer in the atmosphere boundary layer. The other paper, by Phillips, then 26 years old (J. Fluid Mech., 3(2), 185-204, 1957), proposed that turbulent pressure fluctuations in the wind resonate with propagating ocean waves, forcing them to grow. Together these became known as the Phillips-Miles process, and it was the opening salvo in Phillips's 50-year career of innovative contributions to geophysics through fluid mechanics.

  7. Jean-Martin Charcot and his legacy.

    PubMed

    Bogousslavsky, Julien

    2014-01-01

    Jean-Martin Charcot (1825-1893) rightly is considered the father of both modern neurology and psychiatry in France and much beyond. While he never was interested in mental disease and what was called 'alienism' at the time, his career at La Salpêtrière Hospital over 30 years was mainly marked by the development of a huge group of students which focused on the study and management of hysteria. When Charcot took office at the beginning of 1862, hysteria was a 'no-man's land', medically speaking, since neither the alienists nor the internists had much interest in this condition. At La Salpêtrière, these chronic patients were largely left to themselves before Désiré Bourneville, one of Charcot's first students, convinced his chief to care for them. Subsequently, the studies of Charcot with Paul Richer, Joseph Babinski, Georges Gilles de la Tourette, Paul Sollier, Pierre Janet, and many others allowed the condition to be addressed in detail. During his stay with Charcot in 1885-1866, Sigmund Freud, a young neuropathologist at the time, became fascinated by hysteria, an interest which probably was the main start of his interest in psychology. Charcot emphasized the concept of mental factors in hysteria, along with that of a 'dynamic' lesion, which accounted for the lack of neuropathological findings in the patients. While his ideas on hysteria and hypnotism were criticized after his death even by former pupils, such as Babinski, recent findings from functional studies using magnetic resonance imaging show how accurate and often visionary Charcot's thinking was in this field.

  8. Petrology of impactites from Lake St. Martin structure, Manitoba

    NASA Technical Reports Server (NTRS)

    Simonds, C. H.; Mcgee, P. E.

    1979-01-01

    The 23-km Lake St. Martin crater was produced 200 to 250 million years ago in Archean granitic to amphibolic gneiss, overlain by 400 to 500 m of Ordovician to Devonian limestone and dolomite. In the present paper, a schematic model of the field geology, petrology, and geochemistry is presented. The scenario is built in part on the calculations of Kieffer and Simonds and observations made on the Lake St. Martin structure.

  9. Health hazard evaluation report HETA 83-369-1672, Lockheed-Georgia Company, Marietta, Georgia

    SciTech Connect

    Salisbury, S.; McConnell, R.; Anger, K.

    1986-02-01

    Working conditions were evaluated in Building 84, at the Lockheed/Georgia Company, Marietta, Georgia where parts removed from C54 aircraft wings were spray-cleaned with 1,1,1-trichloroethane or a solvent blend called Turco T-1000. An authorized representative of the Aeronautical Machinists and Aerospace Workers, Lodge 709, had requested the evaluation to investigate health hazards in Building 84. Air samples taken near an exhaust-ventilation booth were analyzed for solvents. Personal air sampling detected exposures at concentrations well below NIOSH evaluation criteria: 23 parts per million (ppm) 1,1,1-trichloroethane, 350ppm limit; 5.8ppm methylene-chloride, 75ppm limit; 2.8ppm tetrachloroethylene, 50ppm limit; 1.2ppm aromatic hydrocarbons, 25ppm limit; 0.2ppm diacetone-alcohol, 50ppm limit; 0.5ppm n-butanol, 50ppm limit; and 0.2ppm xylene, 100ppm limit. Blood carboxyhemoglobin, total urinary trichloro compounds and m-methyl-hippuric-acid were within or below normal levels. The authors conclude that no solvent exposures above NIOSH recommended levels were detected during the evaluation.

  10. Rule-Based Interpreting Of Aerial Photographs Using The Lockheed Expert System

    NASA Astrophysics Data System (ADS)

    Perkins, W. A.; Faffey, T. J.; Nguyen, T. A.

    1986-03-01

    Human photointerpreters use expert knowledge and contextual information to help them analyze a scene. We have experimented with the Lockheed Expert System (LES) to see if contextual information can be useful in interpreting aerial photographs. First, the gray-scale image is segmented into uniform or slowly varying intensity regions or contiguous textured regions using an edge-based segmentation technique. Next, the system computes a set of attributes for each region. Some of these attributes are based on local properties of that region only (e.g., area, average intensity, texture strength, etc.); others are based on contextual or global information (e.g., adjacent regions and nearby regions). Finally, LES is given the task of classifying all the regions using the attribute values. It utilizes multiple goals and multiple rule sets to determine the best classification; regions that do not satisfy any of the rules are left unclassified. The authors obtained the rules by an introspection technique after studying many aerial photographs. Unlike programs that use only statistics in the region under consideration, LES can use contextual information such as the fact that cars are likely to be adjacent to roads, which significantly improves its performance on regions that are difficult to classify.

  11. Projected role of advanced computational aerodynamic methods at the Lockheed-Georgia company

    NASA Technical Reports Server (NTRS)

    Lores, M. E.

    1978-01-01

    Experience with advanced computational methods being used at the Lockheed-Georgia Company to aid in the evaluation and design of new and modified aircraft indicates that large and specialized computers will be needed to make advanced three-dimensional viscous aerodynamic computations practical. The Numerical Aerodynamic Simulation Facility should be used to provide a tool for designing better aerospace vehicles while at the same time reducing development costs by performing computations using Navier-Stokes equations solution algorithms and permitting less sophisticated but nevertheless complex calculations to be made efficiently. Configuration definition procedures and data output formats can probably best be defined in cooperation with industry, therefore, the computer should handle many remote terminals efficiently. The capability of transferring data to and from other computers needs to be provided. Because of the significant amount of input and output associated with 3-D viscous flow calculations and because of the exceedingly fast computation speed envisioned for the computer, special attention should be paid to providing rapid, diversified, and efficient input and output.

  12. Martin A. Knutson seated at desk

    NASA Technical Reports Server (NTRS)

    1990-01-01

    In May, 1984, Martin A. Knutson was appointed Director of Flight Operations for NASA's Ames Research Center at Moffett Field, California, and also was assigned the additional position as Site Manager of the Ames-Dryden Flight Research Facility at Edwards, California, a position he held until 1990. Knutson attended the University of Minnesota majoring in electrical engineering. He began his aviation career as an aviation cadet in the U.S. Air Force in 1950. Following service in the Korea conflict and participation in developmental test and operation missions in F-84s, he joined the CIA's Air Division flying U-2s. He retired from the Air Force in 1970, having logged over 6,500 hours of flight time. In 1971 Marty Joined NASA at the Ames Research Center as manager of the Airborne Instrumentation Research Project. In 1975 he was named Chief of the Airborne Missions and Applications Division, and served in that position until assuming the position at Dryden. In his six-year tour at Dryden he maintained the facility at 100 percent operational readiness for the most intense period of Shuttle landings ever at the site. He implemented a total modernization of research aircraft support at Dryden by replacing the aging F-104s with a modern F-18 fleet. Marty provided leadership during this period to the successful implementation of a variety of flight research/test programs such as the X-29 forward-swept wing, the planned crash of a B-720 loaded with an experimental FAA fire resistant fuel additive, the F-15 Digital Electronic Engine Control project that integrated propulsion and flight controls for greater efficiency, the Pegasus Air-Launched Rocket Vehicle, the CV-990 Shuttle Landing Gear Test Vehicle, and the F-18 High Angle-of-Attack Research Vehicle. Near the end of his Dryden assignment, the USAF decided to terminate its SR-71 reconnaissance capability and destroy the airframes and associated assets. Almost alone in his belief that these unique aircraft would be needed

  13. Excitonic diamagnetic shifts and linewidths in Al_xGa_1-xAs alloys in high magnetic fields

    NASA Astrophysics Data System (ADS)

    Senger, R. T.; Coli, G.; Bajaj, K. K.; Reno, J. L.; Jones, E. D.; Crooker, Scott

    2002-03-01

    We have measured both the diamagnetic shifts and the linewidths of excitonic transitions in Alx Ga_1-xAs alloys as a function of aluminum concentration and magnetic field at 1.4 K using photoluminescence spectroscopy. The aluminum composition in our samples ranged from 0 to 300 to 50 tesla. The samples were grown on GaAs substrates oriented along [001] direction using molecular beam epitaxy at 590ºC. We find that for a given value of alloy composition, both the diamagnetic shift and excitonic linewidth increase as a function of magnetic field. The observed variations of the diamagnetic shifts and excitonic linewidths with magnetic field are considerably smaller than those calculated by Lee and Bajaj [J. Appl. Phys. 73, 1788 (1993)] using a free exciton model. To explain our experimental data we propose that the excitons are localized in a very specific manner. To simulate exciton localization, we assume that the exciton reduced mass is increased and is obtained by using the alloy dependent heavy-hole mass along [001] direction treated isotropically. The calculated values of the variations of the diamagnetic shift and excitonic linewidth as a function of magnetic field obtained using this model agree very well with those reported here. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94AL85000.

  14. Sex Differences in Left-Handedness Are Also Evident in Scandinavia and in Twins: Comment on Papadatou-Pastou, Martin, Munafo, and Jones (2008)

    ERIC Educational Resources Information Center

    Vuoksimaa, Eero; Kaprio, Jaakko

    2010-01-01

    The lack of sex difference in left-handedness in Scandinavian countries reported by Papadatou-Pastou, Martin, Munafo, and Jones (2008) is questioned. We investigated the sex difference in left-handedness in two Finnish, one Norwegian, and one Swedish population-based sample not included in the Papadatou-Pastou et al. (2008) meta-analysis. The…

  15. Small-scale universality and large-scale diversity. Comment on "Drivers of structural features in gene regulatory networks: From biophysical constraints to biological function" by O.C. Martin, A. Krzywicki, and M. Zagorski

    NASA Astrophysics Data System (ADS)

    Ispolatov, Yaroslav

    2016-07-01

    Martin et al. undertook an arduous task of reviewing vast literature on evolution and functionality of directed biological networks and gene networks in particular. The literature is assessed addressing a question of whether a set of features particular for gene networks is repeatedly recreated among unrelated species driven by selection pressure or has evolved once and is being inherited. To argue for the former mechanism, Martin and colleagues explore the following examples: Scale-free out-degree distribution.

  16. Listening as Embracing the Other: Martin Buber's Philosophy of Dialogue

    ERIC Educational Resources Information Center

    Gordon, Mordechai

    2011-01-01

    In this essay, Mordechai Gordon interprets Martin Buber's ideas on dialogue, presence, and especially his notion of embracing in an attempt to shed some light on Buber's understanding of listening. Gordon argues that in order to understand Buber's conception of listening, one needs to examine this concept in the context of his philosophy of…

  17. Surprise in Schools: Martin Buber and Dialogic Schooling

    ERIC Educational Resources Information Center

    Stern, Julian

    2013-01-01

    The philosopher Martin Buber described the central role of surprise in education. Surprise is not an alternative to planning and order in schools, and it is not even an alternative to repetitive practice. It is, instead, that which must be allowed to occur in any dialogic encounter. Schooling that is creative and filled with hope will also be…

  18. Martin E. P. Seligman: 2006 award for distinguished scientific contributions.

    PubMed

    2006-11-01

    Presents the citation for Martin E. P. Seligman, who received the Award for Distinguished Scientific Contributions "for a career spent charging creatively ahead of his field and then pulling his colleagues along." A brief profile and a selected bibliography, as well as the award address, Positive Psychotherapy, accompany the citation. ((c) 2006 APA, all rights reserved).

  19. Martin Luther King Jr.: The Crozer Seminary Years.

    ERIC Educational Resources Information Center

    Carson, Clayborne

    1997-01-01

    As an undergraduate at Morehouse College, Martin Luther King Jr. was not a strong student, although he excelled in oratory, but in his years at Crozer Theological Seminary in Pennsylvania he applied himself to become a straight-A student. The development of his theological perspective is described. (SLD)

  20. A Dr. Martin Luther King, Jr. Curriculum: Playing the Dream.

    ERIC Educational Resources Information Center

    Clemens, Sydney Gurewitz

    1988-01-01

    Discusses curriculum for young children centered around the beliefs and teachings of Dr. Martin Luther King, Jr. His works are interpreted in a human rights context in which children find their voice in the peaceable resolution of everyday conflicts. Describes the Child of the Day program. (Author/RWB)

  1. Dr. Martin Luther King, Jr. Washington State Resource Guide.

    ERIC Educational Resources Information Center

    Washington Office of the State Superintendent of Public Instruction, Olympia, WA. Div. of Instructional Programs and Services.

    The Washington State Resource Guide on Martin Luther King, Jr., supplies a wide variety of materials for use with all grade levels in classroom and assembly presentations in public schools. The goal is for every child enrolled in Washington State schools to learn about Dr. King during the days of January 15 to January 17. Resolutions supporting an…

  2. [Christ as a pharmacist, according to Martin Luther].

    PubMed

    Steiger, Johann Anselm

    2003-07-01

    This condition has been stimulated by the latest study written by Fitz Krafft concerning the motif "Jesus Christ as a pharmacist", which was frequently used in Christian art. It is shown that this motif, fully developed in the first third of the 17th century, originated in the theology of Martin Luther.

  3. A Model Aerospace Curriculum: August Martin High School.

    ERIC Educational Resources Information Center

    Strickler, Mervin K., Jr.

    This document presents an operational model of a thematic aerospace education school--the August Martin High School (New York). Part 1 briefly describes the nature of aviation/aerospace education and the background of the school. This background information includes how the school was formed, rationale for an aerospace thematic school, research…

  4. Jean-martin charcot pathologist, neurologist, psychiatrist and physician.

    PubMed

    Pandey, Sanjay

    2012-10-01

    Jean-Martin Charcot is known as father of modern neurology. Before him, neurology was only limited to select disorders like chorea. His contributions were not limited to neurology only, as he was instrumental in many new developments in the field of pathology, psychiatry, and internal medicine. Even after 100 years, Charcot`s clinical methods remain the pillar of modern neurology.

  5. Jean-Martin Charcot Pathologist, Neurologist, Psychiatrist and Physician

    PubMed Central

    Pandey, Sanjay

    2012-01-01

    Jean-Martin Charcot is known as father of modern neurology. Before him, neurology was only limited to select disorders like chorea. His contributions were not limited to neurology only, as he was instrumental in many new developments in the field of pathology, psychiatry, and internal medicine. Even after 100 years, Charcot`s clinical methods remain the pillar of modern neurology. PMID:23349597

  6. Dialogical Rhetoric: An Application of Martin Buber's Philosophy of Dialogue.

    ERIC Educational Resources Information Center

    Czubaroff, Jeanine

    2000-01-01

    Postulates that the philosophy of dialogue developed by Martin Buber provides a coherent grounding for a dialogical/ontological rhetoric. Contrasts, respectively, instrumental and dialogical conceptions of the rhetorical situation and instrumental and dialogical characterizations of the rhetor, the rhetor's purposes and modes of influence.…

  7. Teaching about Martin Luther King, Jr.: To What End?

    ERIC Educational Resources Information Center

    Banfield, Beryle

    1985-01-01

    Argues that the celebration of Martin Luther King's birthday provides an opportunity to reaffirm his principles of social justice and positive social change. Outlines a teaching-learning unit (G4-12) based on his writings and speeches. Describes materials needed; teacher preparation; objectives; concepts to be explored; skills to be developed and…

  8. Martin Gardner: 100 Years of the Magic of Physics

    ERIC Educational Resources Information Center

    Gillaspy, John D.

    2014-01-01

    2014 marks the 100th anniversary of the birth of Martin Gardner, a man whose writings helped inspire generations of young students to pursue a career in physics and mathematics. From his first to his last, and many in between, Gardner's publications often combined magic and science. A recurring theme was the clever use of physical principles…

  9. Henry David Thoreau and Martin Luther King, Jr. Lesson Plan.

    ERIC Educational Resources Information Center

    Powell, Brent

    1995-01-01

    Presents a five-lesson, high school instructional unit on the ideas and activities of Henry David Thoreau and Martin Luther King, Jr. Includes student objectives, step-by-step instructional procedures, and discussion questions. Provides quotations by Thoreau and King. (CFR)

  10. The Martin Luther King Library and Archives at the Crossroads.

    ERIC Educational Resources Information Center

    Chepesiuk, Ron; Kelley-Palmer, Gloria

    1994-01-01

    Describes the collection of the Martin Luther King Library and Archives and examines recent problems that have developed. Topics discussed include a lack of adequate funding and personnel; the lawsuit concerning papers given to Boston University by Dr. King; and an interview with Coretta Scott King. (LRW)

  11. Energy Transition Initiative: Island Energy Snapshot - Saint Martin/Sint Maarten

    SciTech Connect

    2015-09-01

    This profile provides a snapshot of the energy landscape of the northeast Caribbean island Saint Martin. The island is divided between two nations, France in the north (Saint-Martin) and the Netherlands in the south (Sint Maarten).

  12. Noise predictions of a high bypass turbofan engine using the Lockheed Near-Field Noise Prediction Program

    NASA Technical Reports Server (NTRS)

    Rawls, J. W., Jr.

    1986-01-01

    The prediction of engine noise during cruise using the Near-Field Noise Prediction Program developed by Lockheed is examined. Test conditions were established which simulate the operation of a high bypass turbofan engine under a wide range of operating conditions. These test conditions include variations in altitude, flight Mach number and thrust setting. Based on the results of noise prediction made using the Lockheed program, an evaluation of the impact of these test conditions on the overall sound pressure level(OASPL)and the one-third octave band spectra is made. An evaluation of the sensitivity of flight condition parameters is also made. The primary noise source from a high bypass turbofan was determined to be fan broadband shock noise. This noise source can be expected to be present during normal cruising conditions. When present, fan broadband shock noise usually dominates at all frequencies and all directivity angles. Other noise sources of importance are broadband shock noise from the primary jet, fan noise, fan mixing noise and turbine noise.

  13. Noise predictions of a high bypass turbofan engine using the Lockheed Near-Field Noise Prediction Program

    NASA Astrophysics Data System (ADS)

    Rawls, J. W., Jr.

    1986-07-01

    The prediction of engine noise during cruise using the Near-Field Noise Prediction Program developed by Lockheed is examined. Test conditions were established which simulate the operation of a high bypass turbofan engine under a wide range of operating conditions. These test conditions include variations in altitude, flight Mach number and thrust setting. Based on the results of noise prediction made using the Lockheed program, an evaluation of the impact of these test conditions on the overall sound pressure level(OASPL)and the one-third octave band spectra is made. An evaluation of the sensitivity of flight condition parameters is also made. The primary noise source from a high bypass turbofan was determined to be fan broadband shock noise. This noise source can be expected to be present during normal cruising conditions. When present, fan broadband shock noise usually dominates at all frequencies and all directivity angles. Other noise sources of importance are broadband shock noise from the primary jet, fan noise, fan mixing noise and turbine noise.

  14. Resolving conflict: a response to Martin and Cheng (2006).

    PubMed

    Thompson-Schill, Sharon L; Botvinick, Matthew M

    2006-06-01

    Martin and Cheng (2006) report the results of an experiment aimed at disentangling the effects of association strength from those of competition on performance on a verb generation task. Their experiment is situated at the center of a putative debate regarding the function of the left inferior frontal gyrus in language processing (see, e.g., Wagner, Pard-Blagoev, Clark, and Poldrack, 2001). Following in this tradition, Martin and Cheng purport to contrast two processes--selection between competing representations and controlled retrieval of weak associates--that we argue can be reduced to the same mechanism. We contend that the distinction between competition and association strength is a false dichotomy, and we attempt to recast this discussion within a Bayesian framework in an attempt to guide research in this area in a more fruitful direction.

  15. Nietzsche, autobiography, history: mourning and Martin and John.

    PubMed

    Champagne, J

    1998-01-01

    How might gay and lesbian literature be read not as a mimetic representation of homosexuality, but as an activity linked to problems of subjectivity and historiography? Reading Dale Peck's novel Martin and John alongside passages from Friedrich Nietzsche's "On the Uses and Disadvantages of History for Life" and Sigmund Freud's "Mourning and Melancholia," this essay argues for an understanding of Peck's text as an attempt to link two apparently different processes of import to contemporary gay male subjects in particular: the writing of what Nietzsche terms "critical history," and the mourning of those lost to HIV disease. It concludes by linking Martin and John to feminist critiques of identity and traditional historiography, as well as noting the connection between these two critiques.

  16. Nietzsche, autobiography, history: mourning and Martin and John.

    PubMed

    Champagne, J

    1998-01-01

    How might gay and lesbian literature be read not as a mimetic representation of homosexuality, but as an activity linked to problems of subjectivity and historiography? Reading Dale Peck's novel Martin and John alongside passages from Friedrich Nietzsche's "On the Uses and Disadvantages of History for Life" and Sigmund Freud's "Mourning and Melancholia," this essay argues for an understanding of Peck's text as an attempt to link two apparently different processes of import to contemporary gay male subjects in particular: the writing of what Nietzsche terms "critical history," and the mourning of those lost to HIV disease. It concludes by linking Martin and John to feminist critiques of identity and traditional historiography, as well as noting the connection between these two critiques. PMID:9505231

  17. Cheryl Martin, Keynote - 2013 ARPA-E Energy Innovation Summit

    SciTech Connect

    Martin, Cheryl )

    2014-03-06

    The fourth annual ARPA-E Energy Innovation Summit was held in Washington D.C. in February, 2013. The event brought together key players from across the energy ecosystem - researchers, entrepreneurs, investors, corporate executives, and government officials - to share ideas for developing and deploying the next generation of energy technologies. Dr. Cheryl Martin is the Deputy Director of the Advanced Research Projects Agency--Energy (ARPA-E), gave the keynote address.

  18. Cheryl Martin, Keynote - 2013 ARPA-E Energy Innovation Summit

    ScienceCinema

    Martin, Cheryl (Deputy Director of the Advanced Research Projects Agency-Energy (ARPA-E))

    2016-07-12

    The fourth annual ARPA-E Energy Innovation Summit was held in Washington D.C. in February, 2013. The event brought together key players from across the energy ecosystem - researchers, entrepreneurs, investors, corporate executives, and government officials - to share ideas for developing and deploying the next generation of energy technologies. Dr. Cheryl Martin is the Deputy Director of the Advanced Research Projects Agency--Energy (ARPA-E), gave the keynote address.

  19. Polarized Light Experiment, Presa Don Martin, Coahuila, Mexico

    NASA Technical Reports Server (NTRS)

    1989-01-01

    This is a single scene from a pair (frames 021 and 024) to study the effects of polarized light in Earth Observations. One scene was exposed with vertically polarized light, the other, horizontally. The subject in this study, is a lake behind Presa (dam) Don Martin (27.5N, 100.5W) on the edge of the Rio Grande Plain near it's boundry with the Sierra Madre Orientral in Coahuila, Mexico.

  20. Copernicus and Martin Luther: An encounter between science and religion

    NASA Astrophysics Data System (ADS)

    Kobe, Donald H.

    1998-03-01

    Martin Luther has been severely criticized by some scholars for a remark he made about Copernicus and his heliocentric theory. When this offhand remark, made at the dinner table four years before the publication of On the Revolutions of the Heavenly Spheres, is considered in its historical context, it is shown to be in keeping with the generally accepted scholarly opinion of the time. Luther's view of science in general and astronomy in particular is examined.

  1. Report on inspection of concerns regarding the Martin Marietta Corporate Review of health and safety at Martin Marietta Energy Systems

    SciTech Connect

    1996-01-18

    An Office of Inspector General Hotline allegation was received from an anonymous complainant regarding a July 1994 Martin Marietta Corporation Team`s health and safety review at three Department of Energy sites managed and operated by the then Martin Marietta Energy Systems. Inc. (Energy Systems), at Oak Ridge, Tennessee. We determined that the President of Energy Systems had requested a Corporate review at the three sites because of his concerns about safety incidents and accidents during the late Spring and early Summer of 1994. The Corporate Team`s charter was to determine if root causes existed for these safety incidents and accidents and to produce recommendations for the reduction or prevention of future safety incidents or accidents.

  2. Teaching of Astronomy at Teresa Martin College. (Breton Title: Ensino de Astronomia Nas Faculdades Teresa Martin.) Enseñanza de la Astronomia en la Facultad Teresa Martin

    NASA Astrophysics Data System (ADS)

    Azevedo Sobreira, Paulo Henrique

    2005-12-01

    Courses with exclusive Astronomy contents did not exist at (FATEMA) Teresa Martin College's program until the end of 2002. In 2001, a series of educational experiments started in courses and classes of Astronomy at Mathematics and Geography departments. This actions culminated with the insertion of Teaching of Astronomy as a study theme in the course of Independent Studies for Mathematics professors in 2005. Até o final de 2002 inexistiam na grade curricular das Faculdades Integradas Teresa Martin (FATEMA) cadeiras com conteúdos exclusivos de Astronomia. A partir do ano de 2001 iniciou-se uma série de experiências educacionais através de modelos de cursos e de aulas de Astronomia nos Departamentos de Matemática e de Geografia, o que culminou com a inserção do Ensino de Astronomia como temática da disciplina de Estudos Independentes para o curso de Licenciatura em Matemática, em 2005. Hasta el final de 2002 no había en el currículo dela Facultad TeresaMartín (FATEMA) en San Pablo - SP, Brasil, disciplinas con contenidos exclusivos de Astronomía. A partir del año 2001 comenzó una secuencia de experimentos educacionales de carrera y de clases de Astronomía en los Departamentos de Matemática y Geografía, culminando en la implantación de clases de Enseñanza dela Astronomíaenla Licenciaturaen Matemática, en el año de 2003, y de la cátedra de extensión en Cosmografía parala Licenciaturaen Geografía.

  3. Ecological Energetics of an Abundant Aerial Insectivore, the Purple Martin

    PubMed Central

    Kelly, Jeffrey F.; Bridge, Eli S.; Frick, Winifred F.; Chilson, Phillip B.

    2013-01-01

    The atmospheric boundary layer and lower free atmosphere, or aerosphere, is increasingly important for human transportation, communication, environmental monitoring, and energy production. The impacts of anthropogenic encroachment into aerial habitats are not well understood. Insectivorous birds and bats are inherently valuable components of biodiversity and play an integral role in aerial trophic dynamics. Many of these insectivores are experiencing range-wide population declines. As a first step toward gaging the potential impacts of these declines on the aerosphere’s trophic system, estimates of the biomass and energy consumed by aerial insectivores are needed. We developed a suite of energetics models for one of the largest and most common avian aerial insectivores in North America, the Purple Martin (Prognesubis). The base model estimated that Purple Martins consumed 412 (± 104) billion insects*y-1 with a biomass of 115,860 (± 29,192) metric tonnes*y-1. During the breeding season Purple Martins consume 10.3 (+ 3.0) kg of prey biomass per km3 of aerial habitat, equal to about 36,000 individual insects*km-3. Based on these calculations, the cumulative seasonal consumption of insects*km-3 is greater in North America during the breeding season than during other phases of the annual cycle, however the maximum daily insect consumption*km-3 occurs during fall migration. This analysis provides the first range-wide quantitative estimate of the magnitude of the trophic impact of this large and common aerial insectivore. Future studies could use a similar modeling approach to estimate impacts of the entire guild of aerial insectivores at a variety of temporal and spatial scales. These analyses would inform our understanding of the impact of population declines among aerial insectivores on the aerosphere’s trophic dynamics. PMID:24086755

  4. Martin Luther King, Jr., General Hospital and, Community Involvement

    PubMed Central

    Humphrey, M. Moss

    1973-01-01

    Community involvement is not just one facet of the new Martin Luther King, Jr., General Hospital's existence. It is the mainstream from which all other activities flow. In addition to meeting the conventional needs of a conventional hospital staff with the core collection of texts and journals, this library goes one step further. It acts as a resource for its community health workers, dietitians, and nurses in their various outreach programs. It serves as a stimulus for the high school or community college student who may be curious about a health career. It also finds time to provide reading material for its patients. PMID:4725343

  5. Martin Luther King, Jr., General Hospital and community involvement.

    PubMed

    Humphrey, M M

    1973-07-01

    Community involvement is not just one facet of the new Martin Luther King, Jr., General Hospital's existence. It is the mainstream from which all other activities flow. In addition to meeting the conventional needs of a conventional hospital staff with the core collection of texts and journals, this library goes one step further. It acts as a resource for its community health workers, dietitians, and nurses in their various outreach programs. It serves as a stimulus for the high school or community college student who may be curious about a health career. It also finds time to provide reading material for its patients.

  6. Martin Gardner: 100 Years of the Magic of Physics

    NASA Astrophysics Data System (ADS)

    Gillaspy, John D.

    2014-10-01

    2014 marks the 100th anniversary of the birth of Martin Gardner, a man whose writings helped inspire generations of young students to pursue a career in physics and mathematics. From his first to his last, and many in between, Gardner's publications often combined magic and science. A recurring theme was the clever use of physical principles to produce an apparently miraculous effect that stimulated the mind to wonder "how is that possible?" In contrast to the disconnect between science and mystery that one often encounters in teaching today, Gardner embraced these two disparate elements, and fused them into a whole that made learning a joy.

  7. Measurements of Martin-Puplett Interferometer Limitations using Blackbody Source

    SciTech Connect

    Evtushenko, Pavel E.; Klopf, John M.

    2013-06-01

    Frequency domain measurements with Martin-Puplett interferometer is one of a few techniques capable of bunch length measurements at the level of ~ 100 fs. As the bunch length becomes shorter, it is important to know and be able to measure the limitations of the instrument in terms of shortest measurable bunch length. In this paper we describe an experiment using a blackbody source with the modified Martin-Puplett interferometer that is routine- ly used for bunch length measurements at the JLab FEL, as a way to estimate the shortest, measurable bunch length. The limitation comes from high frequency cut-off of the wire-grid polarizer currently used and is estimated to be 50 fs RMS. The measurements are made with the same Golay cell detector that is used for beam measure- ments. We demonstrate that, even though the blackbody source is many orders of magnitude less bright than the coherent transition or synchrotron radiation, it can be used for the measurements and gives a very good signal to noise ratio in combination with lock-in detection. We also compare the measurements made in air and in vacuum to characterize the very strong effect of the atmospheric absorption.

  8. Stability and Control Flight Tests of a Vertically Rising Airplane Model Similar to the Lockheed XFV-1 Airplane

    NASA Technical Reports Server (NTRS)

    Kirby, Robert H.

    1954-01-01

    This paper presents the results of an investigation of the dynamic stability and controllability of a model which approximately represents the Lockheed XFV-1 airplane to a 1/8 scale. The investigation consisted of hovering flights in still air at a considerable height above the ground, hovering flights very close to the ground, vertical take-offs and landings, flights through the transition range from hovering to normal forward flight, and sideways translational flights. The model could be flown smoothly and easily in hovering flight despite the fact that the uncontrolled pitching and yawing motions were unstable oscillations. There was a noticeable reduction in the controllability of the model when hovered very close to the ground but take-offs could be made easily and landings on a g,ven spot could be made accurately in spite of this adverse ground effect. Flights through the transition range from hovering to normal forward flight could be performed fairly easily. The model seemed to have stability of angle of attack and angle of roll over most of the transition range. The yawing motion was divergent in the very high angle-of-attack range but could be controlled easily. At the lower angles of attack, the model seemed to become stable in yaw. In sideways flight there was an increasingly strong tendency to diverge in roll as the speed was increased and finally, at a speed of about 25 knots (full scale), the model rolled off despite efforts of the pilot to control it.

  9. Hazard-evaluation and technical-assistance report HETA 89-276-l2093, Lockheed Aeronautical Systems Company, Marietta, Georgia

    SciTech Connect

    Salisbury, S.; Bernard, B.P.; Wilcox, T.; Gunter, B.

    1991-01-01

    In response to a request from the International Association of Machinists and Aerospace Workers, NIOSH conducted an evaluation at the Lockheed Aeronautical Systems Company, Marietta, Georgia due to concerns about health hazards from exposure to epoxy and polyurethane paints being sprayed in open areas on the C-130 aircraft assembly line. About 350 employees worked on the final assembly line. Air samples were collected to evaluate potential exposures to diisocyanates, organic vapors, and trace metals released during painting operations. Environmental sampling demonstrated minimal risk of exposure for nonpainters to organic vapors, isocyanate prepolymers, and toxic metals released into the open atmosphere during first shift painting of wing panels. Area monitors showed airborne concentrations of organic vapors and hazardous particulates which were below current occupational limits. Exposure risks to hexavalent chromium (7440473) compounds were shown for one of the painters spraying primer containing strontium-chromate (7789062). The large interior volume of the building and the rapid dispersion and upward drift of paint overspray may tend to reduce the chance of floor level exposures. The practice of spraying polyurethane when the building was mostly unoccupied should prevent new cases of respiratory sensitization to diisocyanates among the C-130 production workers. The authors recommend specific measures to reduce exposures to diisocyanates and hexavalent chromium compounds.

  10. Amyotrophic lateral sclerosis: early contributions of Jean-Martin Charcot.

    PubMed

    Goetz, C G

    2000-03-01

    Amyotrophic lateral sclerosis is historically an important entity because its manifestations involve distinct signs that can be correlated with gray and white matter lesions at specific sites within the central nervous system. Working at the end of the nineteenth century, the celebrated neurologist, Jean-Martin Charcot, used this disorder as a prototypic example of the power of his research method, termed "méthode anatomoclinique." Using clinical cases and autopsy material, he showed how anatomical lesions in the nervous system could be accurately determined by the presence of carefully analyzed clinical signs. Charcot's work on amyotrophic lateral sclerosis brought together neurological entities formerly considered as disparate disorders, primary amyotrophy and primary lateral sclerosis. In addition, these studies contributed to the understanding of spinal cord and brain stem anatomy and the organization of the normal nervous system. Because of Charcot's fundamental contributions, the eponym "Charcot's disease" has been used internationally in association with amyotrophic lateral sclerosis.

  11. Clinical repercussions of Martin-Gruber anastomosis: anatomical study☆

    PubMed Central

    Cavalheiro, Cristina Schmitt; Filho, Mauro Razuk; Pedro, Gabriel; Caetano, Maurício Ferreira; Vieira, Luiz Angelo; Caetano, Edie Benedito

    2016-01-01

    Objective The main objective of this study was to describe Martin-Gruber anastomosis anatomically and to recognize its clinical repercussions. Method 100 forearms of 50 adult cadavers were dissected in an anatomy laboratory. The dissection was performed by means of a midline incision along the entire forearm and the lower third of the upper arm. Two flaps including skin and subcutaneous tissue were folded back on the radial and ulnar sides, respectively. Results Nerve communication between the median and ulnar nerves in the forearm (Martin-Gruber anastomosis) was found in 27 forearms. The anastomosis was classified into six types: type I: anastomosis between the anterior interosseous nerve and the ulnar nerve (n = 9); type II: anastomosis between the anterior interosseous nerve and the ulnar nerve at two points (double anastomosis) (n = 2); type III: anastomosis between the median nerve and the ulnar nerve (n = 4); type IV: anastomosis between branches of the median nerve and ulnar nerve heading toward the flexor digitorum profundus muscle of the fingers; these fascicles form a loop with distal convexity (n = 5); type V: intramuscular anastomosis (n = 5); and type VI: anastomosis between a branch of the median nerve to the flexor digitorum superficialis muscle and the ulnar nerve (n = 2). Conclusion Knowledge of the anatomical variations relating to the innervation of the hand has great importance, especially with regard to physical examination, diagnosis, prognosis and surgical treatment. If these variations are not given due regard, errors and other consequences will be inevitable. PMID:27069892

  12. Martin Luther King Family Center, Chicago, Illinois: Model Programs. Childhood Education.

    ERIC Educational Resources Information Center

    American Institutes for Research in the Behavioral Sciences, Palo Alto, CA.

    Prepared for the White House Conference on Children (December 1970), this booklet reports on the Martin Luther King Family Center, one of 34 promising programs on childhood education. The Martin Luther King Family Center is now a privately funded, community-controlled demonstration service center with an all black staff. All of its programs are…

  13. 75 FR 53323 - Certificate of Alternative Compliance for the Offshore Supply Vessel LYMAN MARTIN

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-31

    ... SECURITY Coast Guard Certificate of Alternative Compliance for the Offshore Supply Vessel LYMAN MARTIN... Alternative Compliance was issued for the offshore supply vessel LYMAN MARTIN as required by 33 U.S.C. 1605(c... Title 33, Code of Federal Regulation, parts 81 and 89, has been issued for the offshore supply...

  14. 78 FR 35630 - Martin Dam Hydroelectric Project; Notice of Availability of the Draft Environmental Impact...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-13

    ... (Commission) regulations, 18 CFR part 380 (Order No. 486, 52 FR 47897), the Office of Energy Projects has... Energy Regulatory Commission Martin Dam Hydroelectric Project; Notice of Availability of the Draft Environmental Impact Statement for the Martin Dam Hydroelectric Project and Intention To Hold Public Meetings...

  15. How Big Are "Martin's Big Words"? Thinking Big about the Future.

    ERIC Educational Resources Information Center

    Gardner, Traci

    "Martin's Big Words: The Life of Dr. Martin Luther King, Jr." tells of King's childhood determination to use "big words" through biographical information and quotations. In this lesson, students in grades 3 to 5 explore information on Dr. King to think about his "big" words, then they write about their own "big" words and dreams. During the one…

  16. 3 CFR 8473 - Proclamation 8473 of January 15, 2010. Martin Luther King, Jr., Federal Holiday, 2010

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... King, Jr., Federal Holiday, 2010 8473 Proclamation 8473 Presidential Documents Proclamations Proclamation 8473 of January 15, 2010 Proc. 8473 Martin Luther King, Jr., Federal Holiday, 2010By the President of the United States of America A Proclamation The Reverend Dr. Martin Luther King, Jr.,...

  17. 3 CFR 8624 - Proclamation 8624 of January 14, 2011. Martin Luther King, Jr., Federal Holiday, 2011

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... King, Jr., Federal Holiday, 2011 8624 Proclamation 8624 Presidential Documents Proclamations Proclamation 8624 of January 14, 2011 Proc. 8624 Martin Luther King, Jr., Federal Holiday, 2011By the President.... Martin Luther King, Jr. devoted his life to the struggle for justice and equality, sowing seeds of...

  18. 3 CFR 8927 - Proclamation 8927 of January 18, 2013. Martin Luther King, Jr., Federal Holiday, 2013

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... King, Jr., Federal Holiday, 2013 8927 Proclamation 8927 Presidential Documents Proclamations Proclamation 8927 of January 18, 2013 Proc. 8927 Martin Luther King, Jr., Federal Holiday, 2013By the President... Reverend Dr. Martin Luther King, Jr., delivered his “I Have a Dream” speech, challenging America to take...

  19. 3 CFR 8773 - Proclamation 8773 of January 13, 2012. Martin Luther King, Jr., Federal Holiday, 2012

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... King, Jr., Federal Holiday, 2012 8773 Proclamation 8773 Presidential Documents Proclamations Proclamation 8773 of January 13, 2012 Proc. 8773 Martin Luther King, Jr., Federal Holiday, 2012By the President... Lincoln Memorial, the Reverend Dr. Martin Luther King, Jr. inspired a movement that would push our...

  20. The Relationship between Proficiency in French and Academic Achievement for Students in Saint Martin

    ERIC Educational Resources Information Center

    Wilson, Martin Ezikiel

    2013-01-01

    School administrators and educational policy makers have made a substantial effort to address the learning needs of students in Saint Martin, yet the achievement gap between students in Saint Martin and students in metropolitan France still persists. Risk factors such as family structure, socioeconomic status, immigration, and difficulty of…

  1. The Philosopher and the Lecturer: John Dewey, Everett Dean Martin, and Reflective Thinking

    ERIC Educational Resources Information Center

    Day, Michael; Harbour, Clifford P.

    2013-01-01

    Adult education scholars have not yet examined the connections between the philosopher, John Dewey, and the lecturer on adult education, Everett Dean Martin. These scholars generally portray Dewey as indifferent to their field. However, Dewey's correspondence with a New York newspaper editor in 1928, recommending Martin's The Meaning of…

  2. Martin Van Buren's "Return to the Soil." Teaching with Historic Places.

    ERIC Educational Resources Information Center

    National Register of Historic Places, Washington, DC. Interagency Resources Div.

    Using primary documents, maps, and visual data, this lesson packet focuses on Martin Van Buren and his retirement home, Lindenwald, which is on the National Register of Historic Places. The lesson materials compliment classroom study of early 19th century politics by tracing the life of Martin Van Buren and his role in the Jacksonian Era. Included…

  3. 76 FR 74843 - Release of Airport Property, Martin County Airport, Stuart, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-01

    ... advised that its release request is designed to clarify the airport property and to correct ambiguities in... Federal Aviation Administration Release of Airport Property, Martin County Airport, Stuart, FL AGENCY... properties, namely approximately 200 acres at the Martin County Airport, Stuart, FL, from the...

  4. Obituary: Martin F. McCarthy (1923-2010)

    NASA Astrophysics Data System (ADS)

    Coyne, George; Rubin, Vera

    2011-12-01

    Martin F. McCarthy, S.J., astronomer at the Vatican Observatory from 1958 until his retirement in 1999, died peacefully on 5 February at the age of 86 years at the Jesuit Campion Health Center in Weston, Massachusetts where he had resided since his retirement. McCarthy received his doctorate in astronomy from Georgetown University, Washington, DC in 1951. The study of carbon stars, stars whose atmospheres contain more carbon than oxygen, was a major interest for McCarthy. Carbon stars were originally discovered and studied in the 1860s by Fr. Secchi, the eminent Jesuit astronomer. Interestingly, Fr. Secchi spent 1848-50 at Georgetown University in Washington, where Martin McCarthy would receive his PhD degree 101 years later. Upon completion of his seminary studies in theology, he carried out post-doctoral research at Warner and Swasey Observatory, Lick Observatory, the Dominion Astrophysical Observatory and Yerkes Observatory until he began his career at the Vatican Observatory where he served as a key figure in the Observatory's transition to the world of modern research. He also brought the Observatory onto the international stage through his collaborations in research at, among other institutes, Palomar Observatory, Lowell Observatory, Las Campanas Observatories, the Cerro Tololo Interamerican Observatory and the Carnegie Institute of Washington. He served on the Executive Council of the Italian Astronomical Society (1969-1971), was chair of the National Committee of the Vatican to the International Astronomical Union (IAU) from 1979 until his retirement and was President of IAU Commission 25 Stellar Photometry and Polarimetry (1976-1979). During his career he published more than 120 research papers. He was a natural teacher, who enjoyed explaining and talking science to students and visitors. Among his many contributions to the growth of the Vatican Observatory, he was responsible in 1986 for the beginning of the series of the Vatican Observatory Summer

  5. The January 2006 Volcanic-Tectonic Earthquake Swarm at Mount Martin, Alaska

    USGS Publications Warehouse

    Dixon, James P.; Power, John A.

    2009-01-01

    On January 8, 2006, a swarm of volcanic-tectonic earthquakes began beneath Mount Martin at the southern end of the Katmai volcanic cluster. This was the first recorded swarm at Mount Martin since continuous seismic monitoring began in 1996. The number of located earthquakes increased during the next four days, reaching a peak on January 11. For the next two days, the seismic activity decreased, and on January 14, the number of events increased to twice the previous day's total. Following this increase in activity, seismicity declined, returning to background levels by the end of the month. The Alaska Volcano Observatory located 860 earthquakes near Mount Martin during January 2006. No additional signs of volcanic unrest were noted in association with this earthquake swarm. The earthquakes in the Mount Martin swarm, relocated using the double difference technique, formed an elongated cluster dipping to the southwest. Focal mechanisms beneath Mount Martin show a mix of normal, thrust, and strike-slip solutions, with normal focal mechanisms dominating. For earthquakes more than 1 km from Mount Martin, all focal mechanisms showed normal faulting. The calculated b-value for the Mount Martin swarm is 0.98 and showed no significant change before, during, or after the swarm. The triggering mechanism for the Mount Martin swarm is unknown. The time-history of earthquake occurrence is indicative of a volcanic cause; however, there were no low-frequency events or observations, such as increased steaming associated with the swarm. During the swarm, there was no change in the b-value, and the distribution and type of focal mechanisms were similar to those in the period before the anomalous activity. The short duration of the swarm, the similarity in observed focal mechanisms, and the lack of additional signs of unrest suggest this swarm did not result from a large influx of magma within the shallow crust beneath Mount Martin.

  6. Copernicus and Martin Luther: An Encounter Between Science and Religion

    NASA Astrophysics Data System (ADS)

    Kobe, D. H.

    1998-03-01

    Martin Luther has been severely criticized for a remark he made about Copernicus and his heliocentric theory. When this offhand remark, made at the dinner table four years before the publication of On the Revolutions of the Heavenly Spheres, is considered in its historical context, it is shown to be in keeping with the generally accepted scholarly opinion of the time. Luther's view of science in general and astronomy in particular is much more sophisticated than indicated by this single impromptu remark. In the thought of Luther there are two sources of knowledge - experience and revelation. By experience he meant all the human disciplines (or ``science"), and by revelation he meant Biblical theology. Each discipline should have its own technical language and methods. Science and Biblical theology should not conflict, since when speaking of the same phenomena they use a different language. Luther used the clear and literal interpretation of the text of the Bible, except when there were compelling reasons for doing otherwise. Rather than use the Bible as a source of scientific facts and theories as is done by a literalist, he interpreted it as being the witness to Christ. Quotations from Luther are used to illustrate his approach.

  7. Martin Lister (1639-1712) and fools' gold.

    PubMed

    Roos, Anna Marie

    2004-03-01

    Seventeenth-century physician Martin Lister is best known for his work in natural history and participation in the early Royal Society. However, little attention has been focused upon Lister's work in chemistry, the most salient examples being his analysis of pyrites or "fools' gold" near mineral springs in the De Fonbibus medicatis Angliae Exercitatio of 1684 (Exercises on the healing springs of England), his contributions to the Philosophical Transactions in the 1670s and 1680s, and his unpublished manuscript " A Method for the History of Iron, Imperfect." He defined pyrites more specifically as " ironstone marcasites" which were "nothing else but a body of iron disguised under a vitriolic varnish"; "vitriol" referred to iron (II) sulfate which occurred as a weathering product of pyrites. This paper demonstrates that an understanding of Lister's work on pyrites and vitriol is best attained by placing him in the intellectual context of the seventeenth-century chemical debate about minerallogenesis. Lister believed that the volatile exhalations of pyrites and its vitriol in the air were important in the transformation of matter, and he subscribed to the sixteenth-and seventeenth-century theory of witterung (weathering) or ore exhalations as an explanation for the formation of minerals. Despite his allegiance to the theories of witterung, I will illustrate that Lister made use of his interests in natural history to go one step beyond them, postulating that the sulfurous exhalations from pyrites were responsible for the heating of hot springs, as well as meteorological and geological effects. PMID:15190919

  8. Healing relationships and the existential philosophy of Martin Buber

    PubMed Central

    Scott, John G; Scott, Rebecca G; Miller, William L; Stange, Kurt C; Crabtree, Benjamin F

    2009-01-01

    The dominant unspoken philosophical basis of medical care in the United States is a form of Cartesian reductionism that views the body as a machine and medical professionals as technicians whose job is to repair that machine. The purpose of this paper is to advocate for an alternative philosophy of medicine based on the concept of healing relationships between clinicians and patients. This is accomplished first by exploring the ethical and philosophical work of Pellegrino and Thomasma and then by connecting Martin Buber's philosophical work on the nature of relationships to an empirically derived model of the medical healing relationship. The Healing Relationship Model was developed by the authors through qualitative analysis of interviews of physicians and patients. Clinician-patient healing relationships are a special form of what Buber calls I-Thou relationships, characterized by dialog and mutuality, but a mutuality limited by the inherent asymmetry of the clinician-patient relationship. The Healing Relationship Model identifies three processes necessary for such relationships to develop and be sustained: Valuing, Appreciating Power and Abiding. We explore in detail how these processes, as well as other components of the model resonate with Buber's concepts of I-Thou and I-It relationships. The resulting combined conceptual model illuminates the wholeness underlying the dual roles of clinicians as healers and providers of technical biomedicine. On the basis of our analysis, we argue that health care should be focused on healing, with I-Thou relationships at its core. PMID:19678950

  9. Existential medicine: Martin Buber and physician-patient relationships.

    PubMed

    Cohn, F

    2001-01-01

    Martin Buber's (1878-1965) social existentialist thought offers a unique lens through which physician-patient relationships may be interpreted. Buber develops concepts of relationships and dialogue that provide insight into physician-patient relationships. His notions of I-Thou and I-It relationships have relevance for contemporary medical education and practice. Current medical practice is situated in the It-realm of order, objectivity, detachment, abstraction, and experience. This perspective is necessary for medical education and practice but can result in the progressive decline of the interhuman relationships that define medicine. I-Thou relationships, characterized by spontaneity, subjectivity, reciprocity, and recognition and acceptance of the unique other, are essential for humanhood. However, physicians and patients may be constrained from achieving I-Thou relationships by the very nature of their interactions, which are planned and purposive. Buber describes the possibility of a therapeutic relationship that approaches the I-Thou realm. Buber's thought suggests three conceptual shifts that facilitate the development of therapeutic relationships in medical practice and have implications for medical education: (1) from disease-centered to person-centered care, (2) from crisis to everyday management, and (3) from principles and contracts to relationships. PMID:11563223

  10. Martin Lister (1639-1712) and fools' gold.

    PubMed

    Roos, Anna Marie

    2004-03-01

    Seventeenth-century physician Martin Lister is best known for his work in natural history and participation in the early Royal Society. However, little attention has been focused upon Lister's work in chemistry, the most salient examples being his analysis of pyrites or "fools' gold" near mineral springs in the De Fonbibus medicatis Angliae Exercitatio of 1684 (Exercises on the healing springs of England), his contributions to the Philosophical Transactions in the 1670s and 1680s, and his unpublished manuscript " A Method for the History of Iron, Imperfect." He defined pyrites more specifically as " ironstone marcasites" which were "nothing else but a body of iron disguised under a vitriolic varnish"; "vitriol" referred to iron (II) sulfate which occurred as a weathering product of pyrites. This paper demonstrates that an understanding of Lister's work on pyrites and vitriol is best attained by placing him in the intellectual context of the seventeenth-century chemical debate about minerallogenesis. Lister believed that the volatile exhalations of pyrites and its vitriol in the air were important in the transformation of matter, and he subscribed to the sixteenth-and seventeenth-century theory of witterung (weathering) or ore exhalations as an explanation for the formation of minerals. Despite his allegiance to the theories of witterung, I will illustrate that Lister made use of his interests in natural history to go one step beyond them, postulating that the sulfurous exhalations from pyrites were responsible for the heating of hot springs, as well as meteorological and geological effects.

  11. [Jean Martin Charcot and his controversial research on hysteria].

    PubMed

    von Plessen, K

    1996-12-10

    Jean Martin Charcot (1825-1893) is known as the founder of neurology in France and was one of the most versatile medical researchers of his times. At the climax of his career in the Salpêtrière in Paris he began to study the phenomenon of hysteria. Hysterical symptoms were very common in the late nineteenth century in Europe and were looked upon as a challenge to medical science. By means of accurate observation, Charcot managed to describe the distinct features of hysteria. The disease became an accepted medical entity and patients were less often regarded as simulators. Charcot presumed that the disease had a physical cause, and tried to prove this by means of patho-anatomical studies and later by experiment, with help of hypnosis. Charcot's despotic personality, the extraordinary circumstances at the Salpêtrière and the hysteric patients formed a fascinating setting that gives exemplary insight into the non-linear progress of medical science.

  12. [Jean-Martin Charcot, his time and Kinnosuke Miura].

    PubMed

    Aki, M

    1993-12-01

    Jean-Martin Charcot died unexpectedly on August 16, 1893, just 100 years ago. As a young physician, he worked in pathology and medicine under Rayer for nine years, and wrote on diseases of the heart, lungs and kidneys, on rheumatism and gout. In 1862, he was appointed as medical superintendent to the Hospice de la Salpêtrière. This institution contained a population of over 5000 persons, affected with every kind of chronic maladies, particularly with diseases of the nervous system. As a clinician, he could begin to observe, examine and describe with his excellent master Duchenne de Boulogne. And as an anatomo-pathologist in his association with his colleague Vulpian, he devoted himself to compare the pathological findings with clinical records, to bring order into this chaos. During the 8-year period from 1862 to 1870, Charcot made many discoveries that made firm basis for neurology as one new specialty in medicine. The first beautiful fruit of their effort was the clinico-pathological identification of "Disseminated Sclerosis", clearly differentiated from "Paralysis agitans" of which first reported by Parkinson 1817. He succeeded Vulpian to the chair of pathological anatomy in 1872. The sequential decrement of the shift may be a reason why the disease is self-limited.(ABSTRACT TRUNCATED AT 250 WORDS)

  13. Jean-Martin Charcot: neurologist by avocation, nephrologist by yearning.

    PubMed

    Eknoyan, Garabed

    2011-01-01

    In an age of medical advances and specialization, Jean-Martin Charcot (1825-1893) helped found the discipline of neurology and in 1882 was appointed the first Professor of Diseases of the Nervous System in France. As an investigator with broad interests and vast knowledge, Charcot contributed to several other disciplines. An early mentor and dominant figure in Charcot's formative years was Pierre Rayer (1793-1867), famous for his seminal contributions to the study of the kidney, who gifted to Charcot his passion for clinical pathological correlations and likely a yearning for the study of kidney diseases. Famous for the clarity and incisiveness of his formal teaching presentations, Charcot lectured on the kidney at the Faculty of Medicine in Paris in 1877. Translated into English and published as a book titled Lectures on Bright's Disease, those lectures became widely accessible and quoted in the literature through the 1940s. In addition, at a time when he was already concentrating on the study of neurological disorders, Charcot maintained his life-long interest in the kidney and published original studies on the pathological changes of the kidney in gout and experimental lead poisoning, as well as supporting a study of hysterical ischuria by his students.

  14. Working ethics: William Beaumont, Alexis St. Martin, and medical research in antebellum America.

    PubMed

    Green, Alexa

    2010-01-01

    Analyzing William Beaumont's relationship with his experimental subject, Alexis St. Martin, this article demonstrates how the "research ethics" of antebellum America were predicated on models of employment, servitude, and labor. The association between Beaumont and St. Martin drew from and was understood in terms of the ideas and practices of contract labor, informal domestic servitude, indentures, and military service. Beaumont and St. Martin lived through an important period of transition in which personal master-servant relations existed alongside the "free" contract labor of market capitalism. Their relationship reflected and helped constitute important developments in nineteenth-century American labor history. PMID:20657054

  15. All in the family: a belated response to Knudson-Martin's feminist revision of Bowen theory.

    PubMed

    Horne, K Blake; Hicks, Mary W

    2002-01-01

    The first formal attempt at revising Bowen theory within the marriage and family therapy literature is represented in the work of Knudson-Martin (1994). Claiming that several of the theory's concepts are defined at odds with female development, Knudson-Martin (1994) reconceptualizes and expands Bowen theory to rectify these perceived shortcomings. In turn, we address several fundamental concerns with Knudson-Martin's critique and revision of Bowen theory. An alternative representation of Bowen Theory, as well as its relationship to feminist thought, is put forth. Suggestions for the field's future relationship to Bowen theory are also discussed.

  16. Astronaut David Wolf draws blood from Martin Fettman for SLS-2 investigations

    NASA Technical Reports Server (NTRS)

    1993-01-01

    Inside the science module aboard the Earth-orbiting Space Shuttle Columbia, Astronaut David A. Wolf draws blood from payload specialists Martin J. Fettman, DVM. Blood samples from crew members are critical to several Spacelab Life Sciences (SLS-2) investigations.

  17. Advancing description and explanation in clinical linguistics: a legacy of Martin J. Ball.

    PubMed

    Damico, Jack S; Damico, Holly L; Nelson, Ryan L

    2011-11-01

    This article asserts the importance of explication of order and disorder in language as a privileged objective of clinical linguistics and service delivery and reviews the contributions of Martin Ball in advancing this agenda.

  18. Interview with ARPA-E Acting Director Dr. Cheryl Martin on Platts Energy Week

    ScienceCinema

    Martin, Cheryl; Loveless, Bill

    2016-07-12

    Bill Loveless from Platts Energy Week interviews ARPA-E Acting Director, Dr. Cheryl Martin, about the many transformational energy technologies on display at ARPA-E's 5th annual Energy Innovation Summit.

  19. 77 FR 14516 - Alabama Power Company, Martin Dam Hydroelectric Project; Notice of Proposed Revised Restricted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-12

    ... Eligible for Inclusion in the National Register of Historic Places Rule 2010 of the Federal Energy... included in, or eligible for inclusion in, the National Register of Historic Places at the Martin...

  20. Intracrater Evaporite Deposits of the Lake St. Martin Impact Structure: Implications for Mars

    NASA Astrophysics Data System (ADS)

    Stromberg, J.; Berard, G.; Mann, P.; Cloutis, E.

    2011-03-01

    The gypsum-rich intracrater evaporate deposits of the Lake St. Martin impact structure and its spectrally detectable endolithic microbial communities make it a relevant analogue for similar deposits on Mars.

  1. Interview with ARPA-E Acting Director Dr. Cheryl Martin on Platts Energy Week

    SciTech Connect

    Martin, Cheryl; Loveless, Bill

    2014-03-18

    Bill Loveless from Platts Energy Week interviews ARPA-E Acting Director, Dr. Cheryl Martin, about the many transformational energy technologies on display at ARPA-E's 5th annual Energy Innovation Summit.

  2. A new banding technique for nesting adult purple martins

    USGS Publications Warehouse

    Klimkiewicz, M.K.; Jung, P.D.

    1977-01-01

    Mery (1966) showed an almost equal sex ratio, males returned more frequently than females, over 50% of returns paired with other returns, an adult return rate of 20%, and no pair bonds maintained for more than one season. Her study lasted 13 years. Our study has shown that the return rate of locals to parent colonies is 4.1%, sex ratios are nearly equal (combination of banding and observation), return rate of locals to nearby colonies is 0.9,one pair maintained the pair bond for two years, SY females lay fewer eggs than ASY's, SY adults occasionally do not feed frequently enough to maintain the normal growth pattern of the young, SY adults often build poorly constructed nests with little or no mud, overall nest success is lower in SY adults, adults do indeed return to the same colony (19.6%) box and/or compartment, sexes are balanced in a stable colony, males or females are sometimes in excess in a new colony, SY adults are predominate in a new colony, the limiting factor in colony size is most likely the number of boxes and/or compartments available for nesting and,finally, adults and young do indeed use the boxes for roosting after nesting and fledging is complete (even boxes not their own). All of our results are tentative and subject to change after f rther study. Much additional study will be required before we can come up with conclusive answers to many of these questions about the Purple Martin.

  3. [Jean-Martin Charcot and his student, Kinnosuke Miura].

    PubMed

    Miura, Y

    1993-12-01

    Jean-Martin Charcot (1825-1893) was professor and chairman of the neurological clinic at La Salpêtrière, Paris (1882-1893). His student, Doctor Kinnosuke Miura (1864-1950) (my father) graduated in 1887 from Tokyo University. After two years' training under Prof. Erwin von Bälz in Tokyo, he obtained an opportunity to go abroad as a private doctor of Prince Arisugawa. He stayed in Paris during a period of 1889-1890. In these days, he had a chance to get acquaintance with Charcot. When his duty to the Prince was over, he could join the Charcot's clinic during 1891-1892. As he was deeply impressed by Charcot's neurology, after his return to Japan, he organized the Japanese Society of Neurology in 1902 with his colleague, Prof. Shuzo Kure. In the late 1930s, when I was a student at Faculty of Medicine, Tokyo University, my father told me very often how Maître Charcot studied carefully neurological symptoms; how he observed patients every day, at least during two weeks until he presented the patients before the students on every Tuesday at the amphitheatre of La Salpestrière; how Charcot had keen eye at autopsy, etc. He emphasized the importance of anatomo-pathologic examination besides careful clinical observation. Even after the death of Charcot, he continued a good relationships with Charcot's successors, especially with Pierre Marie and Emile Achard. On May 25, 1925, he celebrated a centenary anniversary of Charcot's birthday in Tokyo.

  4. Did Jean-Martin Charcot contribute to stroke?

    PubMed

    Bogousslavsky, Julien; Paciaroni, Maurizio

    2010-01-01

    Stroke was never identified as a significant, autonomous field of activity of the emerging school of neurology at La Salpêtrière, which developed after the appointment of Jean-Martin Charcot (1825-1893) during the last days of 1861. However, stroke was already present in Charcot's first paper (1851), which dealt with a case of multiple organ cardiac embolism, including middle cerebral artery infarction, at a time when the studies of Rudolf Virchow on thromboembolism were unknown in France. A few years later, Charcot made a still up-to-date description of vascular intermittent claudication, which had only been reported in the horse. In the 1860s, Charcot and his pupils presented several major works dealing with cerebrovascular disease, including famous studies on miliary aneurysms in cerebral hemorrhage. This work was done with Charles Bouchard, at the time Charcot's 'interne', but who would become one of his 'political' opponents 2 decades later, when in 1892, as president of the 'agrégation' jury, he rejected the professorship application of 4 protégés of Charcot, including Joseph Babinski and Georges Gilles de la Tourette. Further work on cerebrovascular disease by Charcot included histological studies of brain 'softening', paraneoplastic cerebral arterial occlusion and consequences of stroke (e.g. arthropathies, vegetative changes, contractures and abnormal movements). Brain localization, one of Charcot's major neurological topics, was also largely based on stroke case studies. Charcot's work on stroke remains poorly recognized, but it demonstrates his unique skills in stimulating scientific work in younger colleagues, many of whom subsequently became major figures of neurology and psychiatry.

  5. Martin Marietta Energy Systems Material Safety Data Sheet Program

    SciTech Connect

    Pierce, L.B.; Gray, L.M.

    1993-03-29

    Martin Marietta Energy Systems (Energy Systems) Material Safety Data Sheet (MSDS) Program was established in 1985 to provide health and safety information to Energy Systems employees and to meet OSHA`s Hazard Communication Material Safety Data Sheet requirements. In 1992, the system was modified and incorporated into Energy Systems Hazardous Materials Information System (HMIS)-MSDS Module to assist in the support of the hazardous material inventory requirements. (See Context Diagram, Exhibit A.) The MSDS Module runs under Computer Associates data base (CADB) software on a VAX computer. The system contains approximately 20,000 MSDSs with over 1,000 new, duplicate, and revised sheets being processed each month. The system monitors, tracks and controls the acquisition and processing of MSDSs to ensure a sheet is obtained andmade available for all hazardous materials. The system supplies Energy Systems employees and visitors real-time access to MSDS information. The system supports two types of data sheets: a long form for highly hazardous and/or utilized materials (MSDS) and a more economical short form, Material Safety Reference Sheet (MSRS) that is used in conjunction with the vendor supplied MSDS to meet regulatory requirements. All hazardous materials are evaluated and assigned fire, health, and reactivity ratings, along with other straight-forward criteria. All vendor supplied MSDSs are technically reviewed and researched for accuracy. The MSDS data base is multi-functional and easy to operate. This allows the system to meet the needs of many analogous programs and activities within Energy Systems including Carcinogen Control, Reproductive Hazard Control, Hazardous Material Management, Waste Minimization, Emergency Response, SARA Reporting, Hazard Communications, and Safety.

  6. Martin Marietta Energy Systems Material Safety Data Sheet Program

    SciTech Connect

    Pierce, L.B.; Gray, L.M.

    1993-03-29

    Martin Marietta Energy Systems (Energy Systems) Material Safety Data Sheet (MSDS) Program was established in 1985 to provide health and safety information to Energy Systems employees and to meet OSHA's Hazard Communication Material Safety Data Sheet requirements. In 1992, the system was modified and incorporated into Energy Systems Hazardous Materials Information System (HMIS)-MSDS Module to assist in the support of the hazardous material inventory requirements. (See Context Diagram, Exhibit A.) The MSDS Module runs under Computer Associates data base (CADB) software on a VAX computer. The system contains approximately 20,000 MSDSs with over 1,000 new, duplicate, and revised sheets being processed each month. The system monitors, tracks and controls the acquisition and processing of MSDSs to ensure a sheet is obtained andmade available for all hazardous materials. The system supplies Energy Systems employees and visitors real-time access to MSDS information. The system supports two types of data sheets: a long form for highly hazardous and/or utilized materials (MSDS) and a more economical short form, Material Safety Reference Sheet (MSRS) that is used in conjunction with the vendor supplied MSDS to meet regulatory requirements. All hazardous materials are evaluated and assigned fire, health, and reactivity ratings, along with other straight-forward criteria. All vendor supplied MSDSs are technically reviewed and researched for accuracy. The MSDS data base is multi-functional and easy to operate. This allows the system to meet the needs of many analogous programs and activities within Energy Systems including Carcinogen Control, Reproductive Hazard Control, Hazardous Material Management, Waste Minimization, Emergency Response, SARA Reporting, Hazard Communications, and Safety.

  7. Three Decades Investigating Humor and Laughter: An Interview With Professor Rod Martin.

    PubMed

    Martin, Rod; Kuiper, Nicholas A

    2016-08-01

    Since the start of the 21st century, the investigation of various psychological aspects of humor and laughter has become an increasingly prominent topic of research. This growth can be attributed, in no small part, to the pioneering and creative work on humor and laughter conducted by Professor Rod Martin. Dr. Martin's research interests in humor and laughter began in the early 1980s and continued throughout his 32 year long career as a professor of clinical psychology at the University of Western Ontario. During this time, Dr. Martin published numerous scholarly articles, chapters, and books on psychological aspects of humor and laughter. Professor Martin has just retired in July 2016, and in the present interview he recounts a number of research highlights of his illustrious career. Dr. Martin's earliest influential work, conducted while he was still in graduate school, stemmed from an individual difference perspective that focused on the beneficial effects of sense of humor on psychological well-being. This research focus remained evident in many of Professor Martin's subsequent investigations, but became increasingly refined as he developed several measures of different components of sense of humor, including both adaptive and maladaptive humor styles. In this interview, Dr. Martin describes the conceptualization, development and use of the Humor Styles Questionnaire, along with suggestions for future research and development. In doing so, he also discusses the three main components of humor (i.e., cognitive, emotional and interpersonal), as well as the distinctions and similarities between humor and laughter. Further highlights of this interview include Professor Martin's comments on such diverse issues as the genetic versus environmental loadings for sense of humor, the multifaceted nature of the construct of humor, and the possible limitations of teaching individuals to use humor in a beneficial manner to cope with stress and enhance their social and

  8. Community control of health services. Dr. Martin Luther King, Jr. Health Center's community management system.

    PubMed

    Tichy, N M; Taylor, J I

    1976-01-01

    This article presents the case of Dr. Martin Luther King Jr. Health Center's unique community management system in which neighborhood workers have been developed to assume managerial responsibilities and are directing the Center. The Martin Luther King Center experience is instructive because the Center was able to achieve significant community control by focusing primarily on the internal dimension of control, namely, management, without experiencing destructive conflicts and the deterioration of health services.

  9. Three Decades Investigating Humor and Laughter: An Interview With Professor Rod Martin.

    PubMed

    Martin, Rod; Kuiper, Nicholas A

    2016-08-01

    Since the start of the 21st century, the investigation of various psychological aspects of humor and laughter has become an increasingly prominent topic of research. This growth can be attributed, in no small part, to the pioneering and creative work on humor and laughter conducted by Professor Rod Martin. Dr. Martin's research interests in humor and laughter began in the early 1980s and continued throughout his 32 year long career as a professor of clinical psychology at the University of Western Ontario. During this time, Dr. Martin published numerous scholarly articles, chapters, and books on psychological aspects of humor and laughter. Professor Martin has just retired in July 2016, and in the present interview he recounts a number of research highlights of his illustrious career. Dr. Martin's earliest influential work, conducted while he was still in graduate school, stemmed from an individual difference perspective that focused on the beneficial effects of sense of humor on psychological well-being. This research focus remained evident in many of Professor Martin's subsequent investigations, but became increasingly refined as he developed several measures of different components of sense of humor, including both adaptive and maladaptive humor styles. In this interview, Dr. Martin describes the conceptualization, development and use of the Humor Styles Questionnaire, along with suggestions for future research and development. In doing so, he also discusses the three main components of humor (i.e., cognitive, emotional and interpersonal), as well as the distinctions and similarities between humor and laughter. Further highlights of this interview include Professor Martin's comments on such diverse issues as the genetic versus environmental loadings for sense of humor, the multifaceted nature of the construct of humor, and the possible limitations of teaching individuals to use humor in a beneficial manner to cope with stress and enhance their social and

  10. ACS National Historic Chemical Landmark: Charles Martin Hall's Discovery of the Electrochemical Process for Aluminum

    NASA Astrophysics Data System (ADS)

    Craig, Norman C.

    1997-11-01

    On September 17, 1997 in Oberlin, OH, Oberlin College and the Cleveland Section of the American Chemical Society hosted a celebration in which Charles Martin Hall's discovery of the electrochemical process for extracting aluminum metal from the ore was designated as a National Historic Chemical Landmark by the ACS. Woodshed laboratory with mannequins of Charles Martin Hall and his sister Julia. Photograph used with permission from Oberlin News-Tribune

  11. The 2009 Lindau Nobel Laureate meeting: Martin Chalfie, Chemistry 2008.

    PubMed

    Chalfie, Martin

    2010-02-10

    American Biologist Martin Chalfie shared the 2008 Nobel Prize in Chemistry with Roger Tsien and Osamu Shimomura for their discovery and development of the Green Fluorescent Protein (GFP). Martin Chalfie was born in Chicago in 1947 and grew up in Skokie Illinois. Although he had an interest in science from a young age--learning the names of the planets and reading books about dinosaurs--his journey to a career in biological science was circuitous. In high school, Chalfie enjoyed his AP Chemistry course, but his other science courses did not make much of an impression on him, and he began his undergraduate studies at Harvard uncertain of what he wanted to study. Eventually he did choose to major in Biochemistry, and during the summer between his sophomore and junior years, he joined Klaus Weber's lab and began his first real research project, studying the active site of the enzyme aspartate transcarbamylase. Unfortunately, none of the experiments he performed in Weber's lab worked, and Chalfie came to the conclusion that research was not for him. Following graduation in 1969, he was hired as a teacher Hamden Hall Country Day School in Connecticut where he taught high school chemistry, algebra, and social sciences for 2 years. After his first year of teaching, he decided to give research another try. He took a summer job in Jose Zadunaisky's lab at Yale, studying chloride transport in the frog retina. Chalfie enjoyed this experience a great deal, and having gained confidence in his own scientific abilities, he applied to graduate school at Harvard, where he joined the Physiology department in 1972 and studied norepinephrine synthesis and secretion under Bob Pearlman. His interest in working on C. elegans led him to post doc with Sydney Brenner, at the Medical Research Council Laboratory of Molecular Biology in Cambridge, England. In 1982 he was offered position at Columbia University. When Chalfie first heard about GFP at a research seminar given by Paul Brehm in 1989

  12. YF-12 Lockalloy ventral fin program, volume 1. [design analysis, fabrication, and manufacturing of aircraft structures using aluminum and beryllium alloys for the lockheed YF-12 aircraft

    NASA Technical Reports Server (NTRS)

    Duba, R. J.; Haramis, A. C.; Marks, R. F.; Payne, L.; Sessing, R. C.

    1976-01-01

    Results are presented of the YF-12 Lockalloy Ventral Fin Program which was carried out by Lockheed Aircraft Corporation - Advanced Development Projects for the joint NASA/USAF YF-12 Project. The primary purpose of the program was to redesign and fabricate the ventral fin of the YF-12 research airplane (to reduce flutter) using Lockalloy, and alloy of beryllium and aluminum, as a major structural material. A secondary purpose, was to make a material characterization study (thermodynamic properties, corrosion; fatigue tests, mechanical properties) of Lockalloy to validate the design of the ventral fin and expand the existing data base on this material. All significant information pertinent to the design and fabrication of the ventral fin is covered. Emphasis throughout is given to Lockalloy fabrication and machining techniques and attendant personnel safety precautions. Costs are also examined. Photographs of tested alloy specimens are shown along with the test equipment used.

  13. A Call for Mathematics Education Colleagues and Stakeholders to Collaboratively Engage with NCTM: In Response to Martin's Commentary

    ERIC Educational Resources Information Center

    Briars, Diane J.; Larson, Matt; Strutchens, Marilyn E.; Barnes, David

    2015-01-01

    In his commentary "The Collective Black and 'Principles to Actions,'" Martin (2015) offers a thought-provoking critique of "Principles to Actions: Ensuring Mathematical Success for All" (National Council of Teachers of Mathematics [NCTM], 2014). Martin (2015) states that the mathematics education community, in general, and the…

  14. Circular Dichroism Investigation of Dess-Martin Periodinane Oxidation in the Organic Chemistry Laboratory

    ERIC Educational Resources Information Center

    Reed, Nicole A.; Rapp, Robert D.; Hamann, Christian S.; Artz, Pamela G.

    2005-01-01

    Dess-Martin periodinane oxidation is an experiment that provides an avenue to the introduction of Circular Dichroism (CD) spectroscopy in organic chemistry curriculum as a diagnostic tool for examination of the results of a familiar reaction, and absolute configuration. From the experiment, students increased their understanding of CD theory and…

  15. "I Hope Someone Castrates You, You Perverted Bastard": Martin Cole's Sex Education Film, "Growing Up"

    ERIC Educational Resources Information Center

    Limond, David

    2009-01-01

    This paper concerns the response to the sex education film "Growing Up", made in 1971 by Dr Martin Cole, which used a combination of animation and live action to offer a frank and uncompromising account of sexual reproduction. As part of this, both male and female masturbation and an unsimulated act of male-female coitus featured in the film. Cole…

  16. Has the Dream Been Fulfilled? Dr. Martin Luther King, Jr. & President Barack Hussein Obama

    ERIC Educational Resources Information Center

    Robinson, Nichelle Boyd; Moore, Virginia J.; Williams-Black, Thea H.

    2015-01-01

    Equality for all was the dream of Dr. Martin Luther King, Jr. and he knowingly laid the foundation for and inspired the first African-American President of the United States of America, Barack Hussein Obama, who also had the dream of "Change" for America. These men exhibited how working together can make dreams become reality. For the…

  17. Talent Developed: Conversations with Masters in the Arts and Sciences. Martin Seligman.

    ERIC Educational Resources Information Center

    Subotnik, Rena F.

    2000-01-01

    This interview with Martin Seligman, a past-president of the American Psychological Association and the author of seminal works in the areas of both learned helplessness and optimism, discusses his interest in positive psychology and giftedness, fostering creative genius, his childhood and move from philosophy to psychology, and future plans.…

  18. Trayvon Martin and the Curriculum of Tragedy: Critical Race Lessons for Education

    ERIC Educational Resources Information Center

    Berry, Theodorea Regina; Stovall, David O.

    2013-01-01

    In what ways do the tragedies centered on the lives of black youth, particularly black male youth, inform teachers, education policymakers, and teacher educators about what knowledge is most worth knowing? In this counter/story, we will examine the details of the life and death of Trayvon Martin. From these details, we will extract and interpret a…

  19. Martin Buber's Myth of Zion: National Education or Counter-Education?

    ERIC Educational Resources Information Center

    Breslauer, S. Daniel

    2016-01-01

    If national education is, as Ilan Gur-Ze'ev thinks, inevitably a matter of agents for and victims of a national system, only a "counter-education" can correct it. Martin Buber shared many of Gur-Ze'ev's concerns, but advocated a more positive view of national education. This essay examines Buber's development of his pedagogical theory in…

  20. Let Freedom Ring: The Life & Legacy of Martin Luther King, Jr. [Lesson Plan].

    ERIC Educational Resources Information Center

    National Endowment for the Humanities (NFAH), Washington, DC.

    This lesson plan teaches students about the life and work of Martin Luther King, Jr. Students listen to a brief biography, view photographs of the March on Washington, and read a portion of King's "I Have a Dream" speech. After studying Dr. King's use of imagery and allusion, students create original poetic phrases about freedom and illustrate…

  1. Martin Luther King, Jr. and the Power of Nonviolence. [Lesson Plan].

    ERIC Educational Resources Information Center

    National Endowment for the Humanities (NFAH), Washington, DC.

    This lesson plan introduces students in grades 6-8 to Martin Luther King Jr.'s philosophy of nonviolence and the teachings of Mohandas K. Gandhi that influenced King's views. After considering the political impact of this philosophy, students explore its relevance to personal life. In these 6 lessons students will: (1) examine the philosophy of…

  2. The Fierce Urgency of now: Honoring Martin Luther King, Jr. in and out of the Classroom.

    ERIC Educational Resources Information Center

    Kazemek, Francis E.

    1988-01-01

    Explores how educators and their students can best honor Martin Luther King, Jr.'s, memory by using his life and works as a catalyst for acting upon school and society in a way that fosters social change. (Author/BJV)

  3. Children's Books on Martin Luther King, Jr. Offer a One-Dimensional View.

    ERIC Educational Resources Information Center

    Banfield, Beryle

    1985-01-01

    Reviews children's books, teacher references, mini-plays, and curriculum resources that relate to the life of Martin Luther King, Jr. Reports that most of these sources ignore growth and changes within King's life and thought, the role models who shaped his philosophy, or his participation in issues such as the Vietnam War and poverty. (KH)

  4. Martin Luther King, Jr. Borrows a Revolution: Argument, Audience, and Implications of a Secondhand Universe.

    ERIC Educational Resources Information Center

    Miller, Keith D.

    1986-01-01

    Examines features of and sources for the discourse of Martin Luther King, Jr., as they relate to the language and assumptions favored by his listeners and readers in an effort to understand how speakers and writers can successfully argue from premises that audiences accept. Indicates how an understanding of King can help in composition…

  5. The Rhetorical Construction of Time in Martin Luther King, Jr.'s "Letter from Birmingham Jail."

    ERIC Educational Resources Information Center

    Lee, Ronald E.

    1991-01-01

    Explores the rhetorical use of time in Martin Luther King, Jr.'s "Letter from Birmingham Jail." Offers an explanation of the ideological heritage that temporarily unifies the discourse. Describes the letter's recent, historical, and spiritual time frames, accounts for the ideological purpose each serves, and explains on what ground they unite. (SR)

  6. 75 FR 10754 - Humboldt-Toiyabe National Forests; Santa Rosa Ranger District; Martin Basin Rangeland Management...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-09

    ... authorize grazing on three of the allotments in the Project Area (the Buffalo, Granite Creek, and Rebel... grazing management. 2. No Grazing Alternative: Eliminate grazing in the Buffalo, Granite Creek, and Rebel... the Buffalo, Granite Creek, and Rebel Creek Allotments in the Martin Basin Rangeland Project area....

  7. The Future of the American Faculty: An Interview with Martin J. Finkelstein and Jack H. Schuster

    ERIC Educational Resources Information Center

    Rice, R. Eugene

    2004-01-01

    Martin J. Finkelstein and Jack H. Schuster have teamed up to continue tracing the changes taking place in faculty work with their Project on the American Faculty. They have published The New Academic Generation: A Profession in Transformation (1998), co-authored with Robert Seal, and are preparing a new manuscript to appear in 2004 with a working…

  8. Martin Luther King, Jr.: A Lesson with Interdisciplinary Connections for Middle-Level Music Students.

    ERIC Educational Resources Information Center

    Early, Mary Frances; Terry, Cynthia

    This lesson begins with a very brief biography of Martin Luther King, Jr. The lesson identifies its educational objectives; addresses National Standards for Music Education; lists materials needed; details six step-by-step classroom procedures for lesson implementation; and provides curriculum connections for language arts, visual art, physical…

  9. New South American species of Cerambycinae, and notes on Corimbion balteum Martins (Coleoptera, Cerambycidae).

    PubMed

    Bezark, Larry G; Santos-Silva, Antonio; Galileo, Maria Helena M

    2016-05-04

    Three new species of Cerambycinae are described from South America: Mecometopus hauseri (Clytini), from Bolivia; Cycnoderus (Cycnoderus) metallicus (Rhopalophorini), from Venezuela; and Corimbion mutabile (Neoibidionini), from Ecuador. Mecometopus hauseri and Corimbion mutabile are included in previous keys. Corrections to the original description of Corimbion balteum Martins, 1970 are presented.

  10. Jean-Martin Charcot's Role in the 19th Century Study of Music Aphasia

    ERIC Educational Resources Information Center

    Johnson, Julene K.; Lorch, Marjorie; Nicolas, Serge; Graziano, Amy

    2013-01-01

    Jean-Martin Charcot (1825-93) was a well-known French neurologist. Although he is widely recognized for his discovery of several neurological disorders and his research into aphasia, Charcot's ideas about how the brain processes music are less well known. Charcot discussed the music abilities of several patients in the context of his "Friday…

  11. EPA Actions in Post Disaster Martin County, Kentucky: An Analysis of Bureaucratic Slippage and Agency Recreancy

    ERIC Educational Resources Information Center

    McSpirit, Stephanie; Scott, Shaunna L.; Hardesty, Sharon; Welch, Robert

    2005-01-01

    In the previous article, the authors described the 300 million gallon coal waste spill in Martin County, Kentucky and the interviews that they had with thirty-two area residents in the aftermath of the release (Scott, McSpirit, Hardesty, and Welch 2004 --this issue). Many of these interviewees charged MCCC-Massey and federal, state, and local…

  12. On the Path towards Thinking: Learning from Martin Heidegger and Rudolf Steiner

    ERIC Educational Resources Information Center

    Dahlin, Bo

    2009-01-01

    This paper is a philosophical study of the nature of thinking based on the philosophies of Martin Heidegger and Rudolf Steiner. For Heidegger, the pre-Socratic Greek philosophers exemplified genuine thinking, appreciating the meaning of Being. But this kind of philosophy was soon replaced by the onto-theological approach, in which Being was…

  13. Autonomous Women in a Drawer: Carmen Martin Gaite's "La hermana pequena"

    ERIC Educational Resources Information Center

    Garcia, Adrian M.

    2009-01-01

    Martin Gaite's only Franco-era play contests some fundamental Catholic and Francoist prescriptions for the female. The fact that it was not published or performed for nearly forty years is likely due at least in part to patriarchal censorship. The work dramatizes the personal development of two half-sisters who defy various gender norms and…

  14. New South American species of Cerambycinae, and notes on Corimbion balteum Martins (Coleoptera, Cerambycidae).

    PubMed

    Bezark, Larry G; Santos-Silva, Antonio; Galileo, Maria Helena M

    2016-01-01

    Three new species of Cerambycinae are described from South America: Mecometopus hauseri (Clytini), from Bolivia; Cycnoderus (Cycnoderus) metallicus (Rhopalophorini), from Venezuela; and Corimbion mutabile (Neoibidionini), from Ecuador. Mecometopus hauseri and Corimbion mutabile are included in previous keys. Corrections to the original description of Corimbion balteum Martins, 1970 are presented. PMID:27394841

  15. Henry David Thoreau, Martin Luther King Jr., and the American Tradition of Protest.

    ERIC Educational Resources Information Center

    Powell, Brent

    1995-01-01

    Maintains that Henry David Thoreau and Martin Luther King, Jr. fundamentally altered the tradition of protest and reform. Compares and contrasts the role of each man in U.S. social and constitutional history. Concludes that while Thoreau lacked the broad influence of King, his writings influenced both King and Mohandas Gandhi. (CFR)

  16. Archer John Porter Martin CBE 1 March 1910 - 28 July 2002.

    PubMed

    Lovelock, James

    2004-01-01

    We judge the worth of a scientist by the benefits he or she brings to science and society; by this measure Archer Martin was outstanding, and rightfully his contribution was recognized with a Nobel Prize. Scientific instruments and instrumental methods now come almost entirely from commercial sources and we take them for granted and often have little idea how they work. Archer Martin was of a different time when scientists would often devise their own new instruments, which usually they fully understood, and then they would use them to explore the world. The chromatographic methods and instruments Martin devised were at least as crucial in the genesis and development of molecular biology as were those from X-ray crystallography. Liquid partition chromatography, especially in its two-dimensional paper form, revealed the amino acid composition of proteins and the nucleic acid composition of DNA and RNA with a rapid and elegant facility. Gas chromatography (GC) enabled the accurate and rapid analysis of lips, which previously had been painfully slow and little more than a greasy sticky confusion of beaker chemistry. Martin's instruments enabled progress in the sciences ranging from geophysics to biology , and without im we might have waited decades before another equivalent genius appeared. More than this, the environmental awareness that Rachel Carson gave us would never had solidified as it did without the evidence of global change measured by GC. This instrumental method provided accurate evidence about the ubiquity of pesticides and pollutants and later made us aware of the growing accumulation in the atmosphere of chlorinated fluorocarbons, nitrous oxide and other ozone-depleting chemicals. If all this were not enough to glorify Martin's partition chromatography, there is the undoubted fact that its simplicity, economy and exquisite resolving power transformed the chemical industry and made possible so many of the conveniences we now take for granted.

  17. ALS Association

    MedlinePlus

    ... toward a world without ALS! Walk to Defeat ALS® Walk to Defeat ALS® draws people of all ... We need your help. I Will Advocate National ALS Registry The National ALS Registry is a congressionally ...

  18. Glial cells in ALS: the missing link?

    PubMed

    Raibon, Elsa; Todd, Lisa Marie; Möller, Thomas

    2008-08-01

    Amyotrophic lateral sclerosis (ALS) was initially known as Charcot's sclerosis, named after the French neurobiologist and physician Jean-Martin Charcot who first described this type of muscular atrophy in the early nineteenth century. In the United States, ALS became widely known as Lou Gehrig's disease after the famous baseball player who succumbed to the disease in the late 1930s. Currently, ALS is the most common motor neuron disease, with a worldwide incidence of 8 cases per 100,000 population per year. Familial forms constitute approximately 5% to 10% of all cases. Onset increases with age, with a peak in the seventh decade and a slight preponderance (relative risk, 1.3-1.5) among men compared with women. Rapid progression of motor neuron loss leads to death an average of 3 to 5 years after symptom onset. The cause of ALS remains unknown and there is still no curative therapy.

  19. Social marketing and MARTIN: tools for organizing, analyzing, and interpreting qualitative data.

    PubMed

    Higgins, J W

    1998-11-01

    The purpose of this article is to discuss how the computer software program MARTIN and social marketing concepts (understanding the consumer perspective, exchange, marketing mix, and segmentation) were used as organizational, analytical, and interpretive tools for qualitative data. The qualitative data are from a case study on citizen participation in a health reform policy in British Columbia. The concept of broad-based public participation is a fundamental element of health promotion and citizenship. There is a gap, however, between the promise and reality of citizen participation in health promotion. Emerging from the analysis was an understanding of the societal circumstances that inhibited or fostered participation. This article describes how the code-based, theory-building attributes of the MARTIN software facilitated a new conceptualization of participatory citizenship and generated new insights into understanding why some people participate and others do not. PMID:10558352

  20. Scattering characteristics of Martin Black at 118 microns. [from Infrared Astronomical Satellite telescope baffles

    NASA Technical Reports Server (NTRS)

    Brooks, L. D.; Hubbs, J. E.; Bartell, F. O.; Wolfe, W. L.

    1982-01-01

    BRDF (bidirectional reflectance distribution function) values for 0.000118 m radiation at different angles of incidence and different scattering angles from the Infrared Astronomical Satellite telescope baffle coated with Martin Black are presented. Data from scatterometer experiments are collected and the BRDF and beta - beta sub 0 (sin theta sub s - sin theta sub 0) values are calculated based on the geometry, the voltage readings, the attenuators in the beam, and the calculated reference levels. A composite curve of forward and backward scattering data for several angles of incidence shows a peak near the specular direction (beta - beta sub 0 = 0), which is the instrument profile reduced by the 20% specular reflection of the Martin Black. The nonspecular part of the reflectivity indicates the slightly specular but largely Lambertian character of the coating. Data for the specular reflectivity as a function of the incidence angle unexpectedly shows a decrease in the specular reflectance with increasing angle of incidence.

  1. Racism and the older voter? Arizona's rejection of a paid holiday to honor Martin Luther King.

    PubMed

    Kastenbaum, R

    1991-01-01

    Two propositions that would have established a paid Martin Luther King holiday were defeated in Arizona's statewide elections of November 6, 1990. Communities and counties with high proportions of senior adult voters cast proportionately more votes against these propositions. Was this an example of racism among the primarily anglo senior adult voters of Arizona? Three models were proposed to account for the general pattern of election-related behavior as well as the vote itself: 1) proactive racist, 2) pragmatic self-interest, and 3) fortress mentality. It was suggested that proactive racism and pragmatic self-interest accounted for less of the opposition to a paid holiday honoring Martin Luther King than did a fortress mentality that has developed through a combination of circumstances. Attention is also given to the larger question of senior adults as perpetrators as well as victims of bigotry.

  2. Social marketing and MARTIN: tools for organizing, analyzing, and interpreting qualitative data.

    PubMed

    Higgins, J W

    1998-11-01

    The purpose of this article is to discuss how the computer software program MARTIN and social marketing concepts (understanding the consumer perspective, exchange, marketing mix, and segmentation) were used as organizational, analytical, and interpretive tools for qualitative data. The qualitative data are from a case study on citizen participation in a health reform policy in British Columbia. The concept of broad-based public participation is a fundamental element of health promotion and citizenship. There is a gap, however, between the promise and reality of citizen participation in health promotion. Emerging from the analysis was an understanding of the societal circumstances that inhibited or fostered participation. This article describes how the code-based, theory-building attributes of the MARTIN software facilitated a new conceptualization of participatory citizenship and generated new insights into understanding why some people participate and others do not.

  3. Common-mode rejection in Martin-Puplett spectrometers for astronomical observations at millimeter wavelengths.

    PubMed

    D'Alessandro, Giuseppe; de Bernardis, Paolo; Masi, Silvia; Schillaci, Alessandro

    2015-11-01

    The Martin-Puplett interferometer (MPI) is a differential Fourier transform spectrometer that measures the difference between spectral brightness at two input ports. This unique feature makes the MPI an optimal zero instrument, able to detect small brightness gradients embedded in a large common background. In this paper, we experimentally investigate the common-mode rejection achievable in the MPI at millimeter wavelengths, and discuss the use of the instrument to measure the spectrum of cosmic microwave background anisotropy.

  4. Carbon-14 dating of an iron bloom associated with the voyages of Sir Martin Frobisher

    SciTech Connect

    Sayre, E.V.; Harbottle, G.; Stoenner, R.W. Washburn, W.; Olin, J.S.; Fitzhugh, W.

    1982-01-01

    This paper recounts the history of the iron bloom associated with the English Elizabethan explorer Sir Martin Frobisher who made 3 voyages to the North American mainland in the 1570's. Specifically the paper deals with the use of proportional counters in carbon-14 dating of the Frobisher iron bloom which is located at the Smithsonian Institution. The procedures for preparing the samples for counting are described. (KRM)

  5. Bunch length measurement at the Fermilab A0 photoinjector using a Martin-Puplett interferometer

    SciTech Connect

    Thurman-Keup, Randy; Fliller, Raymond Patrick; Kazakevich, Grigory; /Fermilab

    2008-05-01

    We present preliminary measurements of the electron bunch lengths at the Fermilab A0 Photoinjector using a Martin-Puplett interferometer on loan from DESY. The photoinjector provides a relatively wide range of bunch lengths through laser pulse width adjustment and compression of the beam using a magnetic chicane. We present comparisons of data with simulations that account for diffraction distortions in the signal and discuss future plans for improving the measurement.

  6. [Martin Kirschner on the occasion of his 100th birthday (author's transl)].

    PubMed

    Schmitt, W

    1979-01-01

    This paper is dedicated to Martin Kirschner one of the outstanding German surgeons of the first half of this century. Many of the inventions and improvements Kirschner made have stood the test of time till today. It was Kirschner who recommended to stretch the stomach for replacing the oesophagus. He practiced for the first time successfully an embolectomy out of the pulmonary artery (1924!). Kirschner improved the wire traction procedure decisevely. Of the same importance is his literary work. PMID:398114

  7. Redescription of Lutzomyia (Lutzomyia) renei Martins, Falcão & Silva, 1957 (Diptera: Psychodidae: Phlebotominae).

    PubMed

    Sábio, Priscila B; Andrade, Andrey J De; Galati, Eunice A B

    2015-08-12

    The male genitalia of Lutzomyia (Lutzomyia) renei (Martins, Falcão & Silva, 1957) have four bristles, three fine and one semi-foliaceous, inserted basomesally on the gonocoxite. Nonetheless, in the original description and in other taxonomic studies, these bristles have been illustrated and described in varying formats. In order to clarify the morphology of this species, both sexes are here redescribed based on three males and one female from the type series. A lectotype and two paralectotypes are here designated.

  8. Three Decades Investigating Humor and Laughter: An Interview With Professor Rod Martin

    PubMed Central

    Martin, Rod; Kuiper, Nicholas A.

    2016-01-01

    Since the start of the 21st century, the investigation of various psychological aspects of humor and laughter has become an increasingly prominent topic of research. This growth can be attributed, in no small part, to the pioneering and creative work on humor and laughter conducted by Professor Rod Martin. Dr. Martin’s research interests in humor and laughter began in the early 1980s and continued throughout his 32 year long career as a professor of clinical psychology at the University of Western Ontario. During this time, Dr. Martin published numerous scholarly articles, chapters, and books on psychological aspects of humor and laughter. Professor Martin has just retired in July 2016, and in the present interview he recounts a number of research highlights of his illustrious career. Dr. Martin’s earliest influential work, conducted while he was still in graduate school, stemmed from an individual difference perspective that focused on the beneficial effects of sense of humor on psychological well-being. This research focus remained evident in many of Professor Martin’s subsequent investigations, but became increasingly refined as he developed several measures of different components of sense of humor, including both adaptive and maladaptive humor styles. In this interview, Dr. Martin describes the conceptualization, development and use of the Humor Styles Questionnaire, along with suggestions for future research and development. In doing so, he also discusses the three main components of humor (i.e., cognitive, emotional and interpersonal), as well as the distinctions and similarities between humor and laughter. Further highlights of this interview include Professor Martin’s comments on such diverse issues as the genetic versus environmental loadings for sense of humor, the multifaceted nature of the construct of humor, and the possible limitations of teaching individuals to use humor in a beneficial manner to cope with stress and enhance their social and

  9. The shore fishes of the Trindade-Martin Vaz insular complex: an update.

    PubMed

    Simon, T; Macieira, R M; Joyeux, J-C

    2013-06-01

    A compilation of historical and recent collections and observations of shore fishes yielded 154 recorded species for Trindade and 67 for Martin Vaz. Twelve taxa, mostly small cryptobenthic species with limited dispersal capabilities and low ecological amplitude, are endemic to this insular complex. In several cases, the seamounts of the Vitória-Trindade Chain appear to have acted as stepping stones between the mainland and islands in periods of low sea level. PMID:23731156

  10. [Martin Luther and his physicians. A contribution to Luther year 1983].

    PubMed

    Völker, A

    1983-10-15

    The Luther memorial year 1983 gives rise to describe the reformer's life from the point of view of his diseases as well as of the measures of the physicians treating him. The description of the work of these persons at the same time mediates insights into the level of the therapeutic measures of the 16th century as well as especially into the medico-scientific activities of the University of Wittenberg, where Martin Luther worked for about 35 years.

  11. The shore fishes of the Trindade-Martin Vaz insular complex: an update.

    PubMed

    Simon, T; Macieira, R M; Joyeux, J-C

    2013-06-01

    A compilation of historical and recent collections and observations of shore fishes yielded 154 recorded species for Trindade and 67 for Martin Vaz. Twelve taxa, mostly small cryptobenthic species with limited dispersal capabilities and low ecological amplitude, are endemic to this insular complex. In several cases, the seamounts of the Vitória-Trindade Chain appear to have acted as stepping stones between the mainland and islands in periods of low sea level.

  12. Particle contamination from Martin Optical Black. [in design of barrel baffle of Infrared Astronomical Satellite

    NASA Technical Reports Server (NTRS)

    Young, P. J.; Noll, R.; Andreozzi, L.; Hope, J.

    1981-01-01

    The design of the barrel baffle of the Infrared Astronomical Satellite (IRAS) Optical Subsystem to minimize production of particulate contamination is described. The configuration of the 50-inch long, 28.5-inch diameter baffle required pop-rivet assembly after coating with Martin Optical Black for stray light suppression. An experiment to determine the contamination produced at assembly led to the modification of the baffle construction to preclude such damage to the coated surfaces.

  13. Mercury in the gold mining district of San Martin de Loba, South of Bolivar (Colombia).

    PubMed

    Olivero-Verbel, Jesus; Caballero-Gallardo, Karina; Turizo-Tapia, Alexi

    2015-04-01

    Gold mining is responsible for most Hg pollution in developing countries. The aims of this study were to assess the levels of total Hg (T-Hg) in human hair, fish, water, macrophyte, and sediment samples in the gold mining district of San Martin de Loba, Colombia, as well as to determine fish consumption-based risks for T-Hg ingestion. T-Hg levels were measured by electrothermal atomization and atomic absorption spectroscopy. The overall mean T-Hg level in hair for humans in the mining district of San Martin de Loba was 2.12 μg/g, whereas for the reference site, Chimichagua, Cesar, it was 0.58 μg/g. Mean T-Hg levels were not different when considered within localities belonging to the mining district but differed when the comparison included Chimichagua. T-Hg levels in examined locations were weakly but significantly associated with age and height, as well as with fish consumption, except in San Martin de Loba. High T-Hg concentrations in fish were detected in Pseudoplatystoma magdaleniatum, Caquetaia kraussii, Ageneiosus pardalis, Cyrtocharax magdalenae, and Triportheus magdalenae, whereas the lowest appeared in Prochilodus magdalenae and Hemiancistrus wilsoni. In terms of Hg exposure due to fish consumption, only these last two species offer some guarantee of low risk for Hg-related health problems. Water, floating macrophytes, and sediments from effluents near mining sites also had high Hg values. In mines of San Martin de Loba and Hatillo de Loba, for instance, the geoaccumulation index (I(geo)) for sediments reached values greater than 6, indicating extreme pollution. In short, these data support the presence of a high Hg-polluted environment in this mining district, with direct risk for deleterious effects on the health of the mining communities. PMID:25354433

  14. Martin Robison Delany (1812-1885): physician, black separatist, explorer, soldier.

    PubMed Central

    Rosenfeld, L.

    1989-01-01

    Martin Robison Delany's great contribution to American life and black history stems from his defiant blackness. He was America's first "Black Nationalist" and the intense embodiment of black pride. Ever changing in his career, he always identified with the black experience and its place in history. In an active life he was doctor, dentist, orator, editor, publisher, Harvard medical student, explorer, dabbler in Central American politics, army officer, and Reconstruction office seeker. Images Fig. 2 PMID:2695204

  15. Mercury in the gold mining district of San Martin de Loba, South of Bolivar (Colombia).

    PubMed

    Olivero-Verbel, Jesus; Caballero-Gallardo, Karina; Turizo-Tapia, Alexi

    2015-04-01

    Gold mining is responsible for most Hg pollution in developing countries. The aims of this study were to assess the levels of total Hg (T-Hg) in human hair, fish, water, macrophyte, and sediment samples in the gold mining district of San Martin de Loba, Colombia, as well as to determine fish consumption-based risks for T-Hg ingestion. T-Hg levels were measured by electrothermal atomization and atomic absorption spectroscopy. The overall mean T-Hg level in hair for humans in the mining district of San Martin de Loba was 2.12 μg/g, whereas for the reference site, Chimichagua, Cesar, it was 0.58 μg/g. Mean T-Hg levels were not different when considered within localities belonging to the mining district but differed when the comparison included Chimichagua. T-Hg levels in examined locations were weakly but significantly associated with age and height, as well as with fish consumption, except in San Martin de Loba. High T-Hg concentrations in fish were detected in Pseudoplatystoma magdaleniatum, Caquetaia kraussii, Ageneiosus pardalis, Cyrtocharax magdalenae, and Triportheus magdalenae, whereas the lowest appeared in Prochilodus magdalenae and Hemiancistrus wilsoni. In terms of Hg exposure due to fish consumption, only these last two species offer some guarantee of low risk for Hg-related health problems. Water, floating macrophytes, and sediments from effluents near mining sites also had high Hg values. In mines of San Martin de Loba and Hatillo de Loba, for instance, the geoaccumulation index (I(geo)) for sediments reached values greater than 6, indicating extreme pollution. In short, these data support the presence of a high Hg-polluted environment in this mining district, with direct risk for deleterious effects on the health of the mining communities.

  16. Friction Stir Weld Tooling Development for Application on the 2195 Al-Cu-Li Space Transportation System External Tank

    NASA Technical Reports Server (NTRS)

    Loftus, Zachary; Arbegast, W. J.; Hartley, P. J.

    1998-01-01

    Friction Stir Welding (FSW) is a new and innovative solid-state joining process which can be applied to difficult-to- weld aluminum alloys. However, the large forces involved with the process have posed a production tooling challenge. Lockheed Martin Michoud Space Systems has overcome many of these challenges on the Super Lightweight External Tank (ET) program. Utilizing Aluminum-Copper-Lithium alloy 2195 in the form of plate and extrusions, investigations of FSW process parameters have been completed. Major loading mechanisms are discussed in conjunction with deflection measurements. Since the ET program is a cryogenic application, a brief comparison of cryogenic material properties with room temperature material properties is offered for both FSW and fusion welds. Finally, a new approach to controlling the FSW process from a load perspective is introduced. Emphasis will be put on tooling development, as well as the impact of tooling design and philosophy on Friction Stir Weld success probability.

  17. Tropospheric Airborne Meteorological Data Reporting (TAMDAR) Sensor Validation and Verification on National Oceanographic and Atmospheric Administration (NOAA) Lockheed WP-3D Aircraft

    NASA Technical Reports Server (NTRS)

    Tsoucalas, George; Daniels, Taumi S.; Zysko, Jan; Anderson, Mark V.; Mulally, Daniel J.

    2010-01-01

    As part of the National Aeronautics and Space Administration's Aviation Safety and Security Program, the Tropospheric Airborne Meteorological Data Reporting project (TAMDAR) developed a low-cost sensor for aircraft flying in the lower troposphere. This activity was a joint effort with support from Federal Aviation Administration, National Oceanic and Atmospheric Administration, and industry. This paper reports the TAMDAR sensor performance validation and verification, as flown on board NOAA Lockheed WP-3D aircraft. These flight tests were conducted to assess the performance of the TAMDAR sensor for measurements of temperature, relative humidity, and wind parameters. The ultimate goal was to develop a small low-cost sensor, collect useful meteorological data, downlink the data in near real time, and use the data to improve weather forecasts. The envisioned system will initially be used on regional and package carrier aircraft. The ultimate users of the data are National Centers for Environmental Prediction forecast modelers. Other users include air traffic controllers, flight service stations, and airline weather centers. NASA worked with an industry partner to develop the sensor. Prototype sensors were subjected to numerous tests in ground and flight facilities. As a result of these earlier tests, many design improvements were made to the sensor. The results of tests on a final version of the sensor are the subject of this report. The sensor is capable of measuring temperature, relative humidity, pressure, and icing. It can compute pressure altitude, indicated air speed, true air speed, ice presence, wind speed and direction, and eddy dissipation rate. Summary results from the flight test are presented along with corroborative data from aircraft instruments.

  18. ALS - resources

    MedlinePlus

    Resources - ALS ... The following organizations are good resources for information on amyotrophic lateral sclerosis : Muscular Dystrophy Association -- mda.org/disease/amyotrophic-lateral-sclerosis National Amyotrophic Lateral Sclerosis (ALS) Registry -- ...

  19. Sir Martin Ryle (27 September 1918 - 14 October 1984). A biographicalmemoir.

    NASA Astrophysics Data System (ADS)

    Graham-Smith, F.

    Martin Ryle was a pioneer of radio astronomy, who developed observational techniques that took the subjectfrom the simple detection of solar radio waves to the most important cosmological investigations since Hubble's discoveries of the 1920s. His involvement with radar during World War II aroused an interest in aerial systems and receiver techniques that eventually led to the invention of aperture synthesis, a technique that is now the basis of all high angular resolution observations in radio astronomy. Using aperturesynthesis telescopes at Cambridge he gave conclusive evidence of evolution in the large-scale structure of the Universe, disproved the steady state theory, and laid the foundations for modern observational cosmology.

  20. Abbreviations, acronyms, and initialisms frequently used by Martin Marietta Energy Systems, Inc.. Second edition

    SciTech Connect

    Miller, J.T.

    1994-09-01

    Guidelines are given for using abbreviations, acronyms, and initialisms (AAIs) in documents prepared by US Department of Energy facilities managed by Martin Marietta Energy Systems, Inc., in Oak Ridge, Tennessee. The more than 10,000 AAIs listed represent only a small portion of those found in recent documents prepared by contributing editors of the Information Management Services organization of Oak Ridge National Laboratory, the Oak Ridge K-25 Site, and the Oak Ridge Y-12 Plant. This document expands on AAIs listed in the Document Preparation Guide and is intended as a companion document

  1. Qualitative Analysis of a Predator-Prey Model with Crowley-Martin Functional Response

    NASA Astrophysics Data System (ADS)

    Dong, Yaying; Zhang, Shunli; Li, Shanbing; Li, Yanling

    In this paper, we are concerned with positive solutions of a predator-prey model with Crowley-Martin functional response under homogeneous Dirichlet boundary conditions. First, we prove the existence and reveal the structure of the positive solutions by using bifurcation theory. Then, we investigate the uniqueness and stability of the positive solutions for a large key parameter. In addition, we derive some sufficient conditions for the uniqueness of the positive solutions by using some specific inequalities. Moreover, we discuss the extinction and persistence results of time-dependent positive solutions to the system. Finally, we present some numerical simulations to supplement the analytic results in one dimension.

  2. Estimating Population Density of the San Martin Titi Monkey (Callicebus oenanthe) in Peru Using Vocalisations.

    PubMed

    van Kuijk, Silvy M; García-Suikkanen, Carolina; Tello-Alvarado, Julio C; Vermeer, Jan; Hill, Catherine M

    2015-01-01

    We calculated the population density of the critically endangered Callicebus oenanthe in the Ojos de Agua Conservation Concession, a dry forest area in the department of San Martin, Peru. Results showed significant differences (p < 0.01) in group densities between forest boundaries (16.5 groups/km2, IQR = 21.1-11.0) and forest interior (4.0 groups/km2, IQR = 5.0-0.0), suggesting the 2,550-ha area harbours roughly 1,150 titi monkeys. This makes Ojos de Agua an important cornerstone in the conservation of the species, because it is one of the largest protected areas where the species occurs.

  3. The first Brazilian neuropsychiatrist, José Martins da Cruz Jobim, tuberculous meningitis and mental disease.

    PubMed

    Gomes, Marleide da Mota; Engelhardt, Eliasz; Chimelli, Leila

    2013-03-01

    The intersection between infectious diseases, poverty and mental disease was an important subject to the Brazilian Neuropsychiatry in the early 19th century. José Martins da Cruz Jobim (1802-1878) was engaged in a hygienist approach based on symptomatological and anatomopathological studies. He wrote "Insânia loquaz" (Loquacious insanity), 1831, the first written text about mental illness in Brazil, founded on clinical and pathological data, compatible with tuberculous meningitis. Thus, Jobim deserves the title of the first neuropsychiatrist in Brazil. The authors critically studied the clinical history and the autopsy findings of his cases, and the main health policies at the time.

  4. Martin Mayman's early memories technique: bridging the gap between personality assessment and psychotherapy.

    PubMed

    Fowler, J C; Hilsenroth, M J; Handler, L

    2000-08-01

    In this article, we describe Martin Mayman's approach to early childhood memories as a projective technique, beginning with his scientific interest in learning theory, coupled with his interest in ego psychology and object relations theory. We describe Mayman's contributions to the use of the early memories technique to inform the psychotherapy process, tying assessment closely to psychotherapy and making assessment more useful in treatment. In this article, we describe a representative sample of research studies that demonstrate the reliability and validity of early memories, followed by case examples in which the early memories informed the therapy process, including issues of transference and countertransference.

  5. [Extensions of the Reformation of Martin Luther to public health in his time].

    PubMed

    Böhmer, W; Kirsten, F

    1983-10-15

    The reformation as the decisive social change during the first half of the 16th century influenced directly also the organisational forms of the contemporary social welfare and indirectly the development of public health of that time. By evaluation of still existing account health of that time. By evaluation of still existing account-books of the Gemeinen Kasten the changes in the provision of the poor and the development of the old hospitals caused by reformation were investigated. Here the personal influence of Martin Luther is shown.

  6. [Martin Luther's somatic diseases. A short life-history 450 years after his death].

    PubMed

    Iversen, O H

    1996-12-10

    The article contains a short life-history of the religious reformer Martin Luther (1483-1546) with main emphasis on his many somatic diseases. The list comprises varicose ulcer, angina pectoris with anxiety, obesity, hypertension arterialis, Ménière's disease with vertigo, tinnitus and fainting fits, gastralgia, constipation with anal ulcers and haemorrhoids with bleeding, urolithiasis, arthritis urica, Roemheld's syndrome, and cataract in one eye. Mentally he had a manic-depressive cast of personality, and a tendency to emotional lability. In spite of this he had an enormous capacity for work.

  7. Jean-Martin Charcot's contributions to the interface between neurology and psychiatry.

    PubMed

    White, M B

    1997-08-01

    Although much has been written about Jean-Martin Charcot (1825-1893) as a neurologist and his commitment to the hysterics of the Salpêtrière, his influence on modern psychiatric thought has been misunderstood. His contributions range from the diagnosis and understanding of certain aspects of hysteria, which influenced psychoanalysis, to insights into the psychopathology of trauma that foreshadow modern concepts of post-traumatic stress disorder and somatoform disorders. This article reviews these aspects in the context of his contributions as a founder of modern neurology, neuropathology and proponent of the anatomo-clinical approach.

  8. Jean-Martin Charcot (1825-1893). The man behind the joint disease.

    PubMed

    Sanders, Lee J

    2002-01-01

    Jean-Martin Charcot was one of the most celebrated French physicians of the 19th century. A masterful teacher and a captivating lecturer, Charcot created the foundations of neurology as an independent discipline, and transformed the Salpêtrière hospital, in Paris, into one of the world's greatest teaching centers for clinical neurologic research. His name is attached to the distinct pathologic entity, Charcot's joint disease, that he so meticulously described. This article reviews the highlights of Charcot's career and his clinicoanatomic studies of patients with tabetic arthropathies.

  9. Martin Mayman's early memories technique: bridging the gap between personality assessment and psychotherapy.

    PubMed

    Fowler, J C; Hilsenroth, M J; Handler, L

    2000-08-01

    In this article, we describe Martin Mayman's approach to early childhood memories as a projective technique, beginning with his scientific interest in learning theory, coupled with his interest in ego psychology and object relations theory. We describe Mayman's contributions to the use of the early memories technique to inform the psychotherapy process, tying assessment closely to psychotherapy and making assessment more useful in treatment. In this article, we describe a representative sample of research studies that demonstrate the reliability and validity of early memories, followed by case examples in which the early memories informed the therapy process, including issues of transference and countertransference. PMID:10941700

  10. SOLERAS - Solar Energy Water Desalination Project: Martin Marietta Corporation. Pilot plant final report

    SciTech Connect

    Not Available

    1985-01-01

    This report documents the technical effort of Martin Marietta Corporation, in association with Black and Veatch International as a subcontractor for the trade studies performed to design a Solar Desalination Pilot Plant is documented. The final system configuration utilizes existing technology to convert seawater to potable water. This technology includes the collection of solar energy, storage of this energy in a fluid heat transfer medium, generation of steam and electricity from this stored energy, utilization of low pressure turbine exhaust steam as a source of energy to distill salt water, and also generation of potable water through the use of a reverse osmosis unit.

  11. Combining cervical and rectal cultures for gonorrhea on a single modified Thayer-Martin plate.

    PubMed

    Chapel, T A; Keane, M B; Gatewood, C

    1976-07-01

    Cultures of the cervix and rectum are recommended for the routine diagnosis of gonorrhea in women. Specimens are usually inoculated on separate plates of selective medium. The present study compares to the recovery rates of N. gonorrhoeae for cervical and rectal specimens plated separately to specimens combined on a single plate of modified Thayer-Martin medium (MTM). No statistically significant difference was detected between the two methods. It is concluded that the practice of combining cervical and rectal specimens on a single MTM plate provides the sensitivity of separately plated specimens at half the cost. Combining specimens could provide a significant cost benefit to gonorrhea control programs.

  12. The leadership principles of Dr. Martin Luther King, Jr. and their relevance to surgery.

    PubMed Central

    Brunicardi, F. Charles; Cotton, Ronald T.; Cole, George W.; Martinez, George

    2007-01-01

    In order to face the challenges in healthcare this century, it is essential that surgeons understand modern leadership principles. One of the greatest leaders in history was Dr. Martin Luther King, Jr., who provides a shining example of level-5 leadership for us to study. The study of leadership principles of great leaders can provide us with practical methods of conflict resolution as well as inspiration to keep us engaged and focused. As leaders of the medical community, we face numerous challenges, including discovering and implementing new treatments for disease, providing care for the indigent, overcoming educational challenges such as incorporating the ACGME Core Competencies into our surgical training and promoting diversity in education. Achieving these goals is often hindered by the environment in which we labor-nearly 50 million are uninsured, the rising cost of medical care is currently at 16% of the GNP, and reimbursement rates are falling-which makes the practice of surgery a significant challenge. Effective leadership will be paramount in achieving these goals. In this editorial, which summarizes a presentation given to the Surgical Section of the annual National Medical Association meeting, five important leadership principles that are important for surgeons have been selected and related to the outstanding leadership of Dr. Martin Luther King, Jr. Images Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 PMID:17304963

  13. Proposed Gasification Product Improvement Facility at the Fort Martin Power Station, Maidsville, West Virginia. Environmental assessment

    SciTech Connect

    Not Available

    1994-03-01

    The Morgantown Energy Technology Center of the US Department of Energy proposes to construct and operate a Gasification Product Improvement Facility (GPIF) at the existing Fort Martin Power Station (FMPS) north of Morgantown, West Virginia. The GPIF would use coal and limestone for sulfur retention to produce a clean fuel gas that would be combusted to provide steam for electrical generation in Unit 2 of the coal-fired, two-unit Fort Martin Power Station (FMPS). The proposed project is needed to develop and demonstrate advanced technologies for gasification of coal and to enhance commercialization of this advanced technology. Phase 1 includes the construction and demonstration of a gasifier and the burning of the product fuel (coal) gas to produce steam for electrical power generation by the FMPS. In the optional Phase 2, a hot gas desulfurization and sulfur recovery system for cleaning the product fuel gas from the gasifier would be constructed and demonstrated during continued gasifier operation. The GPIF is expected to produce a clean fuel gas while emitting minimal quantities of criteria pollutants, trace metals, and other pollutants. This environmental assessment describes the proposed action and discusses the actions potential impacts on air quality, land use, water quality, biological resources, and socioeconomic and culture resources.

  14. Test of Martin's overkill hypothesis using radiocarbon dates on extinct megafauna.

    PubMed

    Surovell, Todd A; Pelton, Spencer R; Anderson-Sprecher, Richard; Myers, Adam D

    2016-01-26

    Following Martin [Martin PS (1973) Science 179:969-974], we propose the hypothesis that the timing of human arrival to the New World can be assessed by examining the ecological impacts of a small population of people on extinct Pleistocene megafauna. To that end, we compiled lists of direct radiocarbon dates on paleontological specimens of extinct genera from North and South America with the expectation that the initial decline of extinct megafauna should correspond in time with the initial evidence for human colonization and that those declines should occur first in eastern Beringia, next in the contiguous United States, and last in South America. Analyses of spacings and frequency distributions of radiocarbon dates for each region support the idea that the extinction event first commenced in Beringia, roughly 13,300-15,000 BP. For the United States and South America, extinctions commenced considerably later but were closely spaced in time. For the contiguous United States, extinction began at ca. 12,900-13,200 BP, and at ca. 12,600-13,900 BP in South America. For areas south of Beringia, these estimates correspond well with the first significant evidence for human presence and are consistent with the predictions of the overkill hypothesis.

  15. The leadership principles of Dr. Martin Luther King, Jr. and their relevance to surgery.

    PubMed

    Brunicardi, F Charles; Cotton, Ronald T; Cole, George W; Martinez, George

    2007-01-01

    In order to face the challenges in healthcare this century, it is essential that surgeons understand modern leadership principles. One of the greatest leaders in history was Dr. Martin Luther King, Jr., who provides a shining example of level-5 leadership for us to study. The study of leadership principles of great leaders can provide us with practical methods of conflict resolution as well as inspiration to keep us engaged and focused. As leaders of the medical community, we face numerous challenges, including discovering and implementing new treatments for disease, providing care for the indigent, overcoming educational challenges such as incorporating the ACGME Core Competencies into our surgical training and promoting diversity in education. Achieving these goals is often hindered by the environment in which we labor-nearly 50 million are uninsured, the rising cost of medical care is currently at 16% of the GNP, and reimbursement rates are falling-which makes the practice of surgery a significant challenge. Effective leadership will be paramount in achieving these goals. In this editorial, which summarizes a presentation given to the Surgical Section of the annual National Medical Association meeting, five important leadership principles that are important for surgeons have been selected and related to the outstanding leadership of Dr. Martin Luther King, Jr.

  16. Test of Martin's overkill hypothesis using radiocarbon dates on extinct megafauna.

    PubMed

    Surovell, Todd A; Pelton, Spencer R; Anderson-Sprecher, Richard; Myers, Adam D

    2016-01-26

    Following Martin [Martin PS (1973) Science 179:969-974], we propose the hypothesis that the timing of human arrival to the New World can be assessed by examining the ecological impacts of a small population of people on extinct Pleistocene megafauna. To that end, we compiled lists of direct radiocarbon dates on paleontological specimens of extinct genera from North and South America with the expectation that the initial decline of extinct megafauna should correspond in time with the initial evidence for human colonization and that those declines should occur first in eastern Beringia, next in the contiguous United States, and last in South America. Analyses of spacings and frequency distributions of radiocarbon dates for each region support the idea that the extinction event first commenced in Beringia, roughly 13,300-15,000 BP. For the United States and South America, extinctions commenced considerably later but were closely spaced in time. For the contiguous United States, extinction began at ca. 12,900-13,200 BP, and at ca. 12,600-13,900 BP in South America. For areas south of Beringia, these estimates correspond well with the first significant evidence for human presence and are consistent with the predictions of the overkill hypothesis. PMID:26504205

  17. DOSEXPRT: A bioassay dosimetry code for Martin Marietta Energy Systems, Inc.

    SciTech Connect

    Ward, R.C.; Eckerman, K.F.

    1992-04-01

    The bioassay code DOSEXPRT was developed for Martin Marietta Energy Systems, Inc., to provide compliance with Department of Energy (DOE) Order 5480, Chapter 11. DOSEXPRT computes the intake of a radionuclide in any year (considering both acute and chronic intakes) from in vivo measurements of the retained activity and/or measurements of the activity in excreta. The committed effective and organ doses for the intake are computed as well as the effective and organ doses expected to be received in each calendar year out to 50 years beyond the year of intake. The bioassay records used as input for DOSEXPRT are extracted from the Martin Marietta Energy Systems Occupational Health Information System (OHIS). DOSEXPRT implements a set of algorithms with parameters governing the translocation, retention, and excretion of the nuclide contained in data files specific to the nuclide. These files also contain dose-per-unit-intake coefficients used to compute the committed dose equivalent for the intakes in the year. Annual organ and effective doses are computed using additional dose-rate files that contain data on the dose rate at various times following a unit intake. If measurements are presented for more than one assay for a given nuclide, DOSEXPRT estimates the intake by applying weights assigned in the nuclide file for each assay. DOSEXPRT is accessed off the OHIS MENU No. 4 and designed to be run as a batch processor, but can also be run interactively for testing purposes.

  18. DOSEXPRT: A bioassay dosimetry code for Martin Marietta Energy Systems, Inc

    SciTech Connect

    Ward, R.C.; Eckerman, K.F.

    1992-04-01

    The bioassay code DOSEXPRT was developed for Martin Marietta Energy Systems, Inc., to provide compliance with Department of Energy (DOE) Order 5480, Chapter 11. DOSEXPRT computes the intake of a radionuclide in any year (considering both acute and chronic intakes) from in vivo measurements of the retained activity and/or measurements of the activity in excreta. The committed effective and organ doses for the intake are computed as well as the effective and organ doses expected to be received in each calendar year out to 50 years beyond the year of intake. The bioassay records used as input for DOSEXPRT are extracted from the Martin Marietta Energy Systems Occupational Health Information System (OHIS). DOSEXPRT implements a set of algorithms with parameters governing the translocation, retention, and excretion of the nuclide contained in data files specific to the nuclide. These files also contain dose-per-unit-intake coefficients used to compute the committed dose equivalent for the intakes in the year. Annual organ and effective doses are computed using additional dose-rate files that contain data on the dose rate at various times following a unit intake. If measurements are presented for more than one assay for a given nuclide, DOSEXPRT estimates the intake by applying weights assigned in the nuclide file for each assay. DOSEXPRT is accessed off the OHIS MENU No. 4 and designed to be run as a batch processor, but can also be run interactively for testing purposes.

  19. [The painting 'The anatomical lesson by Professor Louis Bolk' by Martin Monnickendam].

    PubMed

    Baljet, B

    1993-12-18

    In 1992 the painting 'The anatomy of professor Louis Bolk' by the Dutch painter Martin Monnickendam (1874-1943), was finally returned to its place in the 'Tulp-room' of the Department of Anatomy and Embryology at the University of Amsterdam, after the department had been moved to new premises in 1985. The professor of anatomy at the University of Amsterdam, Louis Bolk, is seated in the middle surrounded by his, at that time, former pupils, from left to right: Boeke, Barge and van den Broek, authors of a Dutch textbook of anatomy. The four professors are gathered around a cadaver of an orang-utan, placed not on a dissection table but on a console. Bolk is facing the observer and holding a scalpel in one hand while steadying the animal's head with the other; he is ready to make an incision. In the back of the painting a bust of the 18th century anatomist Petrus Camper is visible. The four professors all wear a white coat over their suits. Bolk finishes this off with an artistic bow tie whilst the others use an ordinary necktie. The painting is signed in the left upper corner 'Martin Monnickendam 1925'. PMID:8277996

  20. Seroprevalence of Asian Lineage Chikungunya Virus Infection on Saint Martin Island, 7 Months after the 2013 Emergence

    PubMed Central

    Gay, Noellie; Rousset, Dominique; Huc, Patricia; Matheus, Séverine; Ledrans, Martine; Rosine, Jacques; Cassadou, Sylvie; Noël, Harold

    2016-01-01

    At the end of 2013, chikungunya virus (CHIKV) emerged in Saint Martin Island, Caribbean. The Asian lineage was identified. Seven months after this introduction, the seroprevalence was 16.9% in the population of Saint Martin and 39.0% of infections remained asymptomatic. This moderate attack rate and the apparent limited size of the outbreak in Saint Martin could be explained by control measures involved to lower the exposure of the inhabitants. Other drivers such as climatic factors and population genetic factors should be explored. The substantial rate of asymptomatic infections recorded points to a potential source of infection that can both spread in new geographic areas and maintain an inconspicuous endemic circulation in the Americas. PMID:26643536

  1. ASTRA1 solid state star trackers for Martin Marietta's modular attitude control system module

    NASA Astrophysics Data System (ADS)

    Gullapalli, Sarma N.; Flynn, David J.; Kissh, Frank J.; Gauthier, Albert G.; Kenney, Thomas M.

    1993-09-01

    The HD-1002 (also known as MACS) solid state star trackers being built by Hughes Danbury Optical Systems, Inc. (HDOS) for Martin Marietta Astro Space Division for use in their Modular Attitude Control Systems (MACS) Module are improved and modified versions of the ASTRA1 star trackers now in use on board the TOPEX/POSEIDON satellite. The ASTRA1 design was based on the pioneering work accomplished at HDOS over the past decade. Along with the set of trackers being built by HDOS for Space Station Freedom, these trackers answer a variety of application requirements for spacecraft attitude control systems. This paper addresses the main features of the MACS trackers, their role in the MACS Module, and summarizes the excellent preliminary performance results of the tracker, as supported by measured test data.

  2. Staff management of security personnel at Martin Marietta Energy Systems, Inc. , Portsmouth Gaseous Diffusion Plant

    SciTech Connect

    Not Available

    1991-09-25

    The Portsmouth Gaseous Diffusion Plant Security and Police Operations Department is responsible for protecting the US Department of Energy interests at the Portsmouth Plant from theft, sabotage, and other hostile acts that may adversely affect national security, the public health and safety, or property at the Department of Energy facility. This audit's purpose was to evaluate Martin Marietta Energy Systems, Inc.'s staff management at the Portsmouth Plant Security Department. The Portsmouth Plant Security Department could reduce operating cost up to an estimated $4.4 million over 5 years by: (1) Eliminating up to 14 unnecessary staff positions, and (2) reducing the length of relief breaks. These economies could be realized through implementing written operating procedures and negotiating removal of certain labor union restrictions. 2 tabs.

  3. Gunshot wounds to the hand. The Martin Luther King, Jr, General Hospital experience.

    PubMed

    Phillips, P; Hansraj, K K; Cox, E E; Ashley, E M

    1995-01-01

    This article is a retrospective review of patients who presented to Martin Luther King, Jr./Drew Medical Center with gunshot wounds and had either isolated or associated injuries to the hand. The following is an account of those injuries noting the location, soft-tissue or bony involvement, and interventional methods that were implemented in the treatment of these patients who resided primarily in South Central Los Angeles. Prompt evaluation and initiation of treatment is essential in the management of both high- and low-velocity gunshot wounds so as to decrease the potential morbidity that often follows. Society must also look at the prevalence of these injuries and address the underlying issues that often are the root of the acts of violence.

  4. Visual art in the neurologic career of Jean-Martin Charcot.

    PubMed

    Goetz, C G

    1991-04-01

    Jean-Martin Charcot, the world's first chaired professor of neurology, incorporated visual art into his daily practice of neurology. Art served as scientific documentation and was a pivotal tool in the development and dissemination of Charcot's clinicoanatomic method. Although Charcot drew extensively in clinical and laboratory studies, very few of these visual documents have ever been published or are currently available for public study. Charcot was central to the incorporation of medical photographs into the study of neurologic disease and relied heavily on visual material in his capacity as an international teacher. Art also misguided Charcot's career when he relied heavily on artwork in his attempt to convince critics that disorders seen at the Salpêtrière Hospital, Paris, France, were independent of his suggestive influence.

  5. [Jean-Martin Charcot (1825-1893): a physician with multiple facets].

    PubMed

    Lellouch, Alain

    2013-12-01

    This work is registered in the year (2013) commemorating the 120 years since Jean-Martin Charcot's (1825-1893) death. Presently, the event takes place during 2013, in France, in Paris, at Hôpital de la Salpêtrière where Charcot practiced as medical chief of l'Hospice de la Vieillesse-Femmes, from 1862 until he died in 1893. The aim of the research is to show, from various examples and sources (printed and handwritten: fonds d'archives Charcot de la Salpêtrière) how talented Charcot was as a clinician, pathologist and microscopist, researcher and experimenter, teacher, artist, designer, cartoonist, polyglot and traveller), how varied his medical career was and how innovative his scientific method was. All this permitted Charcot to make an impressive number of medical discoveries in various fields which are today known as geriatrics and rheumatology, internal medicine, cardiology, neurology, psychiatry and paranormal processes.

  6. Neurologist or psychiatrist? The public and private domains of Jean-Martin Charcot.

    PubMed

    Gelfand, T

    2000-01-01

    The emergence of neurology as an autonomous, prestigious field in late-nineteenth-century Paris is well known. Less appreciated is the role that neurologists played vis-à-vis the cognate older field of psychiatry. Taking Jean-Martin Charcot, the most influential neurologist of his time, as a test case, this paper contrasts his attitudes and practice in the public setting of teaching and hospital work with his private practice. A staunch defender of a clear distinction between his field and psychiatry, Charcot's private practice displayed more flexibility. Treating hysteria and neurasthenia created a middle ground of nervous diseases for him to cultivate. Unpublished case histories and other materials, especially from the Charcot library, support the conception of neurologists as active agents in constituting a new psychological medicine.

  7. [Jean-Martin Charcot (1825-1893): a physician with multiple facets].

    PubMed

    Lellouch, Alain

    2013-12-01

    This work is registered in the year (2013) commemorating the 120 years since Jean-Martin Charcot's (1825-1893) death. Presently, the event takes place during 2013, in France, in Paris, at Hôpital de la Salpêtrière where Charcot practiced as medical chief of l'Hospice de la Vieillesse-Femmes, from 1862 until he died in 1893. The aim of the research is to show, from various examples and sources (printed and handwritten: fonds d'archives Charcot de la Salpêtrière) how talented Charcot was as a clinician, pathologist and microscopist, researcher and experimenter, teacher, artist, designer, cartoonist, polyglot and traveller), how varied his medical career was and how innovative his scientific method was. All this permitted Charcot to make an impressive number of medical discoveries in various fields which are today known as geriatrics and rheumatology, internal medicine, cardiology, neurology, psychiatry and paranormal processes. PMID:26035927

  8. Estimating Population Density of the San Martin Titi Monkey (Callicebus oenanthe) in Peru Using Vocalisations.

    PubMed

    van Kuijk, Silvy M; García-Suikkanen, Carolina; Tello-Alvarado, Julio C; Vermeer, Jan; Hill, Catherine M

    2015-01-01

    We calculated the population density of the critically endangered Callicebus oenanthe in the Ojos de Agua Conservation Concession, a dry forest area in the department of San Martin, Peru. Results showed significant differences (p < 0.01) in group densities between forest boundaries (16.5 groups/km2, IQR = 21.1-11.0) and forest interior (4.0 groups/km2, IQR = 5.0-0.0), suggesting the 2,550-ha area harbours roughly 1,150 titi monkeys. This makes Ojos de Agua an important cornerstone in the conservation of the species, because it is one of the largest protected areas where the species occurs. PMID:26824671

  9. Telemedicine in extreme conditions: supporting the Martin Strel Amazon Swim Expedition.

    PubMed

    Latifi, Rifat; Stanonik, Mateja de Leonni; Merrell, Ronald C; Weinstein, Ronald S

    2009-01-01

    Slovenian Martin Strel, the Guinness world record holder in ultra marathon swimming, recently set a new world record by swimming the entire Amazon River. Over a 66-day period beginning in Atalaya, Peru, he swam to the Atlantic Ocean at Belém, Brazil. This record-breaking swim was part of the Amazon Swim Expedition. This entire mission was supported by a comprehensive medical team, the Amazon Virtual Medical Team (AVMT), which provided medical support using telemedicine. The AVMT, a multinational volunteer group of specialists, physicians, and telemedicine experts, provided medical support 24/7 in some of the most remote, dangerous, basin. The AVMT was directed basin. The AVMT was directed by Dr. Rifat Latifi and expedition team physician, Dr. Mateja de Leonni Stanonik, who was aboard the boat during the entire expedition. The expedition provided a unique opportunity to promote telemedicine and e-health in over 17 communities in the Amazon basin.

  10. On the effect of tilted roof reflectors in Martin-Puplett spectrometers

    NASA Astrophysics Data System (ADS)

    Schillaci, Alessandro; de Bernardis, Paolo

    2012-01-01

    In this paper we analyze theoretically and experimentally the effect of tilt of the roof mirrors in a double pendulum Martin-Puplett Polarizing Interferometer (MPI), focusing on the polarization of the interfering beams. In principle, the tilt affects the efficiency and polarimetric properties of the interferometer. The case of a moderate resolution spectrometer is analysed in detail. Using the Stokes formalism we recover the analytical expressions for the orientation angle and the ellipticity of the beam reflected from a metallic surface, and we compute these quantities for the roof-mirror of a MPI. We find that the polarization rotation and depolarization are small. Using the Jones formalism we propagate their effect on the measured interferogram and spectrum, and demonstrate that the performance degradation is small compared to other systematic effects.

  11. Martin Marietta Energy Systems Environmental Management Plan, FY 1985-1989

    SciTech Connect

    Furth, W.F.; Cowser, K.E.; Jones, C.G.; Mitchell, M.E.; Perry, T.P.A.; Stair, C.L.; Stinton, L.H.

    1985-05-01

    This plan contains the most recent revisions (as of April 1, 1985) identifying and resolving environmental problems during the next five years at the four installations managed for DOE by Martin Marietta Energy Systems, Inc. (Energy Systems). These installations are Oak Ridge National Laboratory (ORNL), Oak Ridge Gaseous Diffusion Plant (ORGDP), Oak Ridge Y-12 Plant (Y-12), and Paducah Gaseous Diffusion Plant (PGDP). The report is not an exhaustive catalogue of environmental programs for which funds will be or have been requested. The thrust is to categorize the environmental challenges by the nature of the challenge. The challenges are identified by categories: (1) radioactive waste, (2) hazardous waste, (3) co-contaminated waste (hazardous and radioactive contaminated), (4) conventional waste, (5) monitoring, and (6) remedial actions and decommissioning.

  12. Birth of modern psychiatry and the death of alienism: the legacy of Jean-Martin Charcot.

    PubMed

    Bogousslavsky, Julien; Moulin, Thierry

    2011-01-01

    At the time of Jean-Martin Charcot, Paris--the main center for studies on the nervous system and its disorders--was home to critical exchanges between the developing discipline of neurology and psychiatry. Contrary to the commonly held view, and in spite of an established tradition concerning mental diseases, emerging neurology had a much stronger influence on psychiatry ('alienism') than the reverse. This was largely due to the school built up by Jean-Martin Charcot himself, which was organized around the study and management of hysteria. Although Charcot always claimed to be uninterested in mental medicine, he stimulated the development of an original scientific approach to nervous system conditions, based on Claude Bernard's method, along with structured academic teaching. Conversely, alienism paradoxically remained stuck in organicism, after Antoine Bayle's report in 1822 of 'arachnitis' as the substratum of general paresis of the insane. Contrary to alienism, the young neurological school was capable of self-criticism, and progressively highlighted mental factors in hysteria. This led to the paradox that neurologists were active in a disease with no organic cerebral lesion, while alienists were postulating brain lesions in all mental disorders. Pushed by Charcot, the academic evolution led to the launch of a faculty chair of mental and brain diseases in 1875, which was taken over for nearly half a century by his direct pupils Benjamin Ball, Alix Joffroy and Gilbert Ballet, who held the position until 1916, supporting the development of modern psychiatry in general hospitals, while alienism progressively disappeared at the turn of the century.

  13. Considering the Work of Martin Nakata's "Cultural Interface": A Reflection on Theory and Practice by a Non-Indigenous Academic

    ERIC Educational Resources Information Center

    McGloin, Colleen

    2009-01-01

    This is a reflective paper that explores Martin Nakata's work as a basis for understanding the possibilities and restrictions of non-Indigenous academics working in Indigenous studies. The paper engages with Nakata's work at the level of praxis. It contends that Nakata's work provides non-Indigenous teachers of Indigenous studies a framework for…

  14. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, SWINE WASTE ELECTRIC POWER AND HEAT PRODUCTION--MARTIN MACHINERY INTERNAL COMBUSTION ENGINE

    EPA Science Inventory

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, a combined heat and power system designed by Martin Machinery was evaluated. This paper provides test result...

  15. Configuring the EPRI plant monitoring workstation for boiler section cleanliness at Texas Utilities`s Martin Lake Plant

    SciTech Connect

    Cona, C.; Ulvog, P.

    1995-06-01

    T.U. Electric`s Martin Lake plant has a history of boiler slagging which is characteristic of the Texas lignite used as fuel. Using the capabilities of EPRI`s Plant Monitoring Workstation (PMW) and enhanced performance monitoring instrumentation, Martin Lake has developed an on-line boiler cleanliness model that can be used to manage sootblowing. Testing of the model has been very positive, showing good correlation between blowers operated and cleanliness obtained. potential applications of this model are for (1) testing the effectiveness of revised combustion strategies and (2) development of an automatic sootblowing system. These two areas could result in heat rate improvements. This paper discusses how the PMW models were configured to represent Martin Lake`s boilers and the results of on-line tests. Critical to this technique is the calculation of boiler gas flow. A somewhat unique feature of Martin Lake`s model is the calculation of boiler gas flow based on the induction draft (ID) fan horsepower. Most boiler gas flow calculations are based on stack gas flow which would have been inaccurate because of the wet scrubbers and stack gas reheat on this unit. Using the ID fan horsepower to derive boiler gas flow has application in boiler efficiency calculations as well.

  16. 78 FR 78469 - Receipt of Noise Compatibility Program and Request for Review; Martin County Airport/Witham Field...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-26

    ... Federal Aviation Administration Receipt of Noise Compatibility Program and Request for Review; Martin.... SUMMARY: The Federal Aviation Administration (FAA) announces that it is reviewing a proposed Noise.... 47504 et. seq (the Aviation Safety and Noise Abatement Act hereinafter referred to as ``the Act'')...

  17. Pragmatic Analyses of Martin Luther King (Jr)'s Speech: "I Have a Dream"--An Introspective Prognosis

    ERIC Educational Resources Information Center

    Josiah, Ubong E.; Oghenerho, Gift

    2015-01-01

    This paper investigates the speech of Martin Luther King (Jr.) titled: "I Have a Dream", presented in 1963 at the Lincoln Memorial. This speech is selected for use because it involves a speaker and an audience who belong to a particular speech community. The speech is about the failed promises by the Americans whose dream advocate…

  18. Human Progress Never Rolls in on Wheels of Inevitability: Biographies of Martin Luther King, Jr., in the Classroom.

    ERIC Educational Resources Information Center

    Kazemek, Francis E.

    1990-01-01

    Presents resources for teaching about Dr. Martin Luther King, Jr. Outlines criteria for selecting biographies for children and young adults. Identifies problems in certain biographies of King, and recommends high quality biographies of King. Discusses exercises for integrating themes from King's life into the classroom. (RW)

  19. Embracing the Outsider, and Suffering Change: Charles A. Martin, Former Editor-in Chief, "The Journal of Negro Education"

    ERIC Educational Resources Information Center

    Martin, Charles A.

    2007-01-01

    This article highlights the accomplishments and challenges of former Editor-in-Chief of "The Journal of Negro Education", Charles A. Martin. He documents the changes he made to the JNE as well as the resistance he faced, which made the process more complicated. There is also a discussion of the impact of "No Child Left Behind Act" on factors…

  20. Deleting the Object Marker Renders the Sentence Ungrammatical: Comment on Casado, Martin-Loeches, Munoz, and Fernandez-Frias (2005)

    ERIC Educational Resources Information Center

    Demestre, Josep

    2012-01-01

    During the last years there has been an increasing interest in examining the brain responses to word order variations. In one ERP study conducted in Spanish, Casado, Martin-Loeches, Munoz, and Fernandez-Frias (2005) had participants read Spanish transitive sentences with either an SVO (subject-verb-object) or an OVS order. The word order of a…

  1. The Limits of Master Narratives in History Textbooks: An Analysis of Representations of Martin Luther King, Jr.

    ERIC Educational Resources Information Center

    Alridge, Derrick P.

    2006-01-01

    In this study, I argue that American history textbooks present discrete, heroic, one-dimensional, and neatly packaged master narratives that deny students a complex, realistic, and rich understanding of people and events in American history. In making this argument, I examine the master narratives of Martin Luther King, Jr., in high school history…

  2. A new species of Tamarixia Mercet (Hymenoptera, Eulophidae), parasitoid of Trioza aguacate Hollis & Martin (Hemiptera, Triozidae) in Mexico.

    PubMed

    Yefremova, Zoya; González-Santarosa, Graciela; Lomeli-Flores, J Refugio; Bautista-Martínez, Néstor

    2014-01-01

    Tamarixia aguacatensis Yefremova, sp. n. (Hymenoptera: Eulophidae: Tetrastichinae) is described from Mexico as a parasitoid of the avocado psyllid, Trioza aguacate Hollis & Martin (Hemiptera: Triozidae). Trioza aguacate is a serious pest of avocado, Persea americana Miller. A key to the species of Tamarixia Mercet in Mexico is given. PMID:24478580

  3. Race Differences in Cohort Effects on Non-Marital Fertility in the United States: Reply to Martin

    ERIC Educational Resources Information Center

    Stockard, Jean; Gray, Jo Anna; O'Brien, Robert; Stone, Joe

    2009-01-01

    In this article, the authors clarify and provide additional tests of the key elements of their age-period-cohort analysis of non-marital birth rates in this March 2009 issue of "Social Forces." Where Steve Martin, in his commentary, has suggested specific alternative specifications or interpretations of their findings, the authors have…

  4. A new species of Tamarixia Mercet (Hymenoptera, Eulophidae), parasitoid of Trioza aguacate Hollis & Martin (Hemiptera, Triozidae) in Mexico.

    PubMed

    Yefremova, Zoya; González-Santarosa, Graciela; Lomeli-Flores, J Refugio; Bautista-Martínez, Néstor

    2014-01-01

    Tamarixia aguacatensis Yefremova, sp. n. (Hymenoptera: Eulophidae: Tetrastichinae) is described from Mexico as a parasitoid of the avocado psyllid, Trioza aguacate Hollis & Martin (Hemiptera: Triozidae). Trioza aguacate is a serious pest of avocado, Persea americana Miller. A key to the species of Tamarixia Mercet in Mexico is given.

  5. A new species of Tamarixia Mercet (Hymenoptera, Eulophidae), parasitoid of Trioza aguacate Hollis & Martin (Hemiptera, Triozidae) in Mexico

    PubMed Central

    Yefremova, Zoya; González-Santarosa, Graciela; Lomeli-Flores, J. Refugio; Bautista-Martínez, Néstor

    2014-01-01

    Abstract Tamarixia aguacatensis Yefremova, sp. n. (Hymenoptera: Eulophidae: Tetrastichinae) is described from Mexico as a parasitoid of the avocado psyllid, Trioza aguacate Hollis & Martin (Hemiptera: Triozidae). Trioza aguacate is a serious pest of avocado, Persea americana Miller. A key to the species of Tamarixia Mercet in Mexico is given. PMID:24478580

  6. Pretext, Context, Subtext: Textual Power in the Writing of Langston Hughes, Richard Wright, and Martin Luther King, Jr.

    ERIC Educational Resources Information Center

    Bogumil, Mary L.; Molino, Michael R.

    1990-01-01

    Studies verbal pretexts, social subtexts, and interpretive contexts of works by Langston Hughes, Richard Wright, and Martin Luther King, Jr. Notes that cultural repression is propagated (and dispelled) in part through the power of language. Notes that these texts are relevant for teaching textual power in hopes of affecting social change. (RS)

  7. A depositional model for the Taylor coal bed, Martin and Johnson counties, eastern Kentucky

    USGS Publications Warehouse

    Andrews, W.M.; Hower, J.C.; Ferm, J.C.; Evans, S.D.; Sirek, N.S.; Warrell, M.; Eble, C.F.

    1996-01-01

    This study investigated the Taylor coal bed in Johnson and Martin counties, eastern Kentucky, using field and petrographic techniques to develop a depositional model of the coal bed. Petrography and chemistry of the coal bed were examined. Multiple benches of the Taylor coal bed were correlated over a 10 km distance. Three sites were studied in detail. The coal at the western and eastern sites were relatively thin and split by thick clastic partings. The coal at the central site was the thickest and unsplit. Two major clastic partings are included in the coal bed. Each represents a separate and distinct fluvial splay. The Taylor is interpreted to have developed on a coastal plain with periodic flooding from nearby, structurally-controlled fluvial systems. Doming is unlikely due to the petrographic and chemical trends, which are inconsistent with modern Indonesian models. The depositional history and structural and stratigraphic setting suggest contemporaneous structural influence on thickness and quality of the Taylor coal bed in this area.

  8. Petrography, geochemistry and palynology of the Stockton coal bed (Middle Pennsylvanian), Martin County, Kentucky

    USGS Publications Warehouse

    Hower, J.C.; Eble, C.F.; Pierce, B.S.

    1996-01-01

    The Middle Pennsylvanian (Westphalian D) Stockton (also known as the Broas) coal bed of the Breathitt Formation is an important energy resource in Kentucky. Petrographic, geochemical and palynologic studies were undertaken from mine, core and highway exposures in Martin and northern Pike counties, Kentucky, in order to determine the influence of the Stockton depositional ecosystem on those parameters. Vitrinite-rich Stockton lithotypes are dominated by Lycospora. Dull lithotypes, including both high- and low-ash yield durains, generally have abundant Densosporites, suggesting that the parent plant inhabited a fairly wide range of environments. Lithologies having tree ferns as an important component also have high fusinite + semifusinite and a low telinite/gelocollinite ratio. The aerial root bundles of the tree ferns were susceptible to oxidation and, for tissue not oxidized to inertinite, to preservation as gelocollinite. In the initial stages of formation, the Stockton mire was discontinuous and had a rather restricted floral assemblage. The presence of durains higher in the Stockton section, particularly the low-ash yield durains having petrographic indicators of degradation, suggests that portions of the mire developed as a domed peat. The termination of the mire as a high-sulfur, arboreous lycopod-domimated mire is consistent with the return to more planar mire development.

  9. Calc-silicate alteration and sulfide mineralization, San Martin mine, Zacatecas, Mexico

    SciTech Connect

    Rubin, J.N.; Kyle, J.R.; Olivares, R.

    1985-01-01

    The San Martin skarn deposit was formed by intrusion of the 46 Ma Cerro de la Gloria quartz monzonite stock into the Middle Cretaceous Cuesta del Cura limestone. Ensuing hydrothermal alteration produced a metamorphic aureole consisting of calc-silicate minerals and economic concentrations of Cu, Zn, and Ag. Ore bodies are centered around several large veins that roughly parallel the intrusive contact; mineralized endoskarn is locally developed. Cu and Ag decrease with increasing distance from the intrusive contact, and correlate inversely with Pb and Zn horizontally. Cu, Zn, Pb, and Fe increase with depth. Initial metasomatism produced andraditic garnet with lesser hedenbergitic clinopyroxene, along with substantial intercrystalline pore space which was subsequently filled with sulfides. Lower temperature calc-silicates include wollastonite, epidote, chlorite, and tremolite. Metallic minerals show a paragenetic sequence of early arsenopyrite, molybdenite, pyrrhotite, bornite, and chalcopyrite; intermediate sphalerite, chalcopyrite, tetrahedrite, and galena; and late native silver, pyrite, and stibnite. Fluorite, calcite, and minor quartz postdate prograde skarn development. Hydrothermal fluid circulation was controlled by pre-intrusion Laramide deformation and probably was enhanced by intrusion-related fracturing. The intrusive contact and the veins represent the major channels for fluid migration, with local controls affected by layers of impermeable shale and chert. Fluid inclusion data suggest that early mineralizing fluids were dominantly magmatic, with the meteoric component increasing with time.

  10. Historical perspective on pressure ulcers: the decubitus ominosus of Jean-Martin Charcot.

    PubMed

    Levine, Jeffrey M

    2005-07-01

    Jean-Martin Charcot was a towering figure in the French medical community in the 19th century. Among the diseases he studied was the decubitus, or pressure ulcer, as it is commonly called today. He did not believe that pressure or local irritation were causative factors for the decubitus but rather subscribed to the "neurotrophic theory," which held that damage to the central nervous system led directly to its occurrence. Charcot observed that many patients who developed eschar of the sacrum and buttocks died soon afterwards, and referred to this lesion as the decubitus ominosus, implying that its occurrence heralded impending death. His description of the evolving decubitus is extraordinarily detailed and accurate and includes complications that are seldom seen today, such as gangrenous metastases to the lung and invasion of the spinal cord. Charcot's therapeutic nihilism is largely a product of the limited medical technology of his day. The importance of risk factor assessment and timely intervention for persons at risk is now understood. In addition, it is recognized that not all pressure ulcers are unavoidable and that many ulcers, particularly those in early stages, can be reversed. Comparing Charcot's view of the decubitus with our own, insight is provided into the way medicine is practiced today.

  11. Jean Martin Charcot and aphasia: treading the line between experimental physiology and pathological anatomy.

    PubMed

    Brais, B

    1993-11-01

    During his entire career Jean Martin Charcot published or lectured on aphasia and brain localization in man. He contributed case studies during the early 1860s, while in the 1870s he became the leading French promoter of localizationism. It was in 1883 and 1884 that he summarized his thoughts on aphasia in a series of 14 lectures he delivered at the Salpêtrière Hospice. His paramount ambition was to achieve didactic clarity. His proposed "bell diagram" was widely criticized for its simplicity, but nevertheless gained considerable popularity in France. His teaching borrowed extensively from the writings of contemporary researchers and was clearly associationist in nature. Charcot's major contribution in the history of aphasiology is that he introduced the works of "diagram-makers" to the French scientific community at large. Charcot's lecture series also played a key role in renewing interest in psychology. Charcot's dismissal of experimental physiology as a legitimate means of investigating central nervous functions in man allowed him to define a separate field of research for a new psychology, one, he believed, which should depart from introspection and turn to his clinicoanatomic method for guidance.

  12. Jean-Martin Charcot's house officers at La Salpêtrière Hospital.

    PubMed

    Walusinski, Olivier

    2011-01-01

    From the time he became chef de service at La Salpêtrière Hospital in 1866 until his death in 1893, Jean-Martin Charcot oversaw 32 house officers. Some of them became famous, such as D.M. Bourneville, E. Brissaud, P. Marie and G. Gilles de la Tourette. Others are less well known. The fact remains that Charcot knew how to surround himself with fine students and leverage their talents in order to make the neurological discoveries by which he would become famous throughout the world. Here, we present the biographies of H. Soulier (1862), J. Cotard (1865), R. Lépine (1867), A. Gombault (1872), A. Pierret (1874), A. Pitres (1876), P. Oulmont (1877), G. Guinon (1885), P. Blocq(1887), E. Huet (1888), E. Parmentier (1890) and A. Souques(1893). Each of these men with their unique paths and interests helped lay the foundations for the birth of neurology at the end of the 19th century in Paris. As Emile Littré said: 'La science de la Médecine, si elle ne veut pas être rabaissée au rang de métier, doit s'occuper de son histoire et soigner les vieux monuments que les temps passés lui ont légués', which could be translated as 'to avoid being reduced to a trade, the science of medicine must attend to its history and take care of the old monuments handed down by time'.

  13. Jean-Martin Charcot's role in the 19th century study of music aphasia.

    PubMed

    Johnson, Julene K; Lorch, Marjorie; Nicolas, Serge; Graziano, Amy

    2013-05-01

    Jean-Martin Charcot (1825-93) was a well-known French neurologist. Although he is widely recognized for his discovery of several neurological disorders and his research into aphasia, Charcot's ideas about how the brain processes music are less well known. Charcot discussed the music abilities of several patients in the context of his 'Friday Lessons' on aphasia, which took place at the Salpêtrière Hospital in Paris in 1883-84. In his most comprehensive discussion about music, Charcot described a professional trombone player who developed difficulty copying music notation and playing his instrument, thereby identifying a new isolated syndrome of music agraphia without aphasia. Because the description of this case was published only in Italian by one of his students, Domenico Miliotti, there has been considerable confusion and under-acknowledgement of Charcot's ideas about music and the brain. In this paper, we describe Charcot's ideas regarding music and place them within the historical context of the growing interest in the neurological underpinnings of music abilities that took place in the 1880s. PMID:23576129

  14. Martin Marietta Paducah Gaseous Diffusion Plant comprehensive earthquake emergency management program

    SciTech Connect

    Not Available

    1990-02-28

    Recognizing the value of a proactive, integrated approach to earthquake preparedness planning, Martin Marietta Energy Systems, Inc, initiated a contract in June 1989 with Murray State University, Murray, Kentucky, to develop a comprehensive earthquake management program for their Gaseous Diffusion Plant in Paducah, Kentucky (PGDP--Subcontract No. 19P-JV649V). The overall purpose of the program is to mitigate the loss of life and property in the event of a major destructive earthquake. The program includes four distinct (yet integrated) components: (1) an emergency management plan, with emphasis on the catas trophic earthquake, (2) an Emergency Operations Center Duty Roster Manual, (3) an Integrated Automated Emergency Management Information System (IAEMIS), and (4) a series of five training program modules. The PLAN itself is comprised of four separate volumes: Volume I--Chapters 1--3; Volume II--Chapters 4--6, Volume III--Chapter 7, and Volume IV--23 Appendices. The EOC Manual (which includes 15 mutual aid agreements) is designated as Chapter 7 in the PLAN and is a stand alone'' document numbered as Volume III. This document, Volume IV contains the appendices to this report.

  15. Martin Marietta Paducah Gaseous Diffusion Plant comprehensive earthquake emergency management program

    SciTech Connect

    Not Available

    1990-02-28

    Recognizing the value of a proactive, integrated approach to earthquake preparedness planning, Martin Marietta Energy Systems, Inc. initiated a contract in June 1989 with Murray State University, Murray, Kentucky, to develop a comprehensive earthquake management program for their Gaseous Diffusion Plant in Paducah, Kentucky. The overall purpose of the program is to mitigate the loss of life and property in the event of a major destructive earthquake. The program includes four distinct (yet integrated) components: an emergency management plan, with emphasis on the catastrophic earthquake; an Emergency Operations Center Duty Roster Manual; an Integrated Automated Emergency Management Information System (IAEMIS); and a series of five training program modules. The PLAN itself is comprised of four separate volumes: Volume I -- Chapters 1--3; Volume II -- Chapters 4--6, Volume III -- Chapter 7, and Volume IV -- 23 Appendices. The EOC Manual (which includes 15 mutual aid agreements) is designated as Chapter 7 in the PLAN and is a stand alone'' document numbered as Volume III. This document, Volume I, provides an introduction, summary and recommendations, and the emergency operations center direction and control.

  16. Martin Marietta Paducah Gaseous Diffusion Plant comprehensive earthquake emergency management program

    SciTech Connect

    Not Available

    1990-02-28

    Recognizing the value of a proactive, integrated approach to earthquake preparedness planning, Martin Marietta Energy Systems, Inc. initiated a contract in June 1989 with Murray State University, Murray, Kentucky, to develop a comprehensive earthquake management program for their Gaseous Diffusion Plant in Paducah, Kentucky (PGDP -- Subcontract No. 19P-JV649V). The overall purpose of the program is to mitigate the loss of life and property in the event of a major destructive earthquake. The program includes four distinct (yet integrated) components: (1) an emergency management plan with emphasis on the catas trophic earthquake; (2) an Emergency Operations Center Duty Roster Manual; (3) an Integrated Automated Emergency Management Information System (IAEMIS); and (4) a series of five training program modules. The PLAN itself is comprised of four separate volumes: Volume I -- Chapters 1--3; Volume II -- Chapters 4--6; Volume III -- Chapter 7; and Volume IV -- 23 Appendices. The EOC Manual (which includes 15 mutual aid agreements) is designated as Chapter 7 in the PLAN and is this document numbered as Volume III.

  17. Martin Marietta Paducah Gaseous Diffusion Plant comprehensive earthquake emergency management program

    SciTech Connect

    Not Available

    1990-02-28

    Recognizing the value of a proactive, integrated approach to earthquake preparedness planning, Martin Marietta Energy Systems, Inc. initiated a contract in June 1989 with Murray State University, Murray, Kentucky, to develop a comprehensive earthquake management program for their Gaseous Diffusion Plant in Paducah, Kentucky (PGDP -- Subcontract No. 19P-JV649V). The overall purpose of the program is to mitigate the loss of life and property in the event of a major destructive earthquake. The program includes four distinct (yet integrated) components: an emergency management plan, with emphasis on the catastrophic earthquake; an Emergency Operations Center Duty Roster Manual; an Integrated Automated Emergency Management Information System (IAEMIS); and a series of five training program modules. The PLAN itself is comprised of four separate volumes: Volume I -- Chapters 1--3; Volume II -- Chapters 4--6, Volume III -- Chapter 7, and Volume IV -- 23 Appendices. The EOC Manual (which includes 15 mutual aid agreements) is designated as Chapter 7 in the PLAN and is a stand alone'' document numbered as Volume III. This document, Volume II, discusses methodology, engineering and environmental analyses, and operational procedures.

  18. Study of interaction between NO radicals and Martin's spirosilane by means of IR spectroscopy.

    PubMed

    Zins, E L; Krim, L; Lenormand, H; Goddard, J-P; Fensterbank, L

    2013-04-25

    The matrix isolation method is used to record the IR spectrum of C18H8O2F12Si in the 4000-500 cm(-1) range. To gain an IR spectrum with a sufficient resolution, this technique was used with neon as the dilution medium at 5 K. The generated species were characterized by in situ fourier transform infrared (FT-IR) spectroscopy. Once the Martin's spirosilane 1 (C18H8O2F12Si) was characterized, its reactivity toward NO was investigated under the same experimental conditions (i.e., using neon as a dilution medium at 5 K). In this case, the use of neon at very low temperature leads to the formation of a chemically inert matrix in which the species are trapped and isolated from one another, thus hindering consecutive reactions. As a consequence, intermediates can be observed. This approach allowed us to characterize the NO adduct, leading to the formation of 1-(NO). Concentration effects as well as annealing experiments were carried out. In addition to this experimental approach, products were identified by using reference spectra. Our results proved that, in the dilute phase, the reaction between 1 and NO radicals leads to the formation of an adduct. This stable species can further react with NO to form a more stable compound: 1-(NO)2. This proves the ability of such species to trap NO.

  19. Jean-Martin Charcot's role in the 19th century study of music aphasia.

    PubMed

    Johnson, Julene K; Lorch, Marjorie; Nicolas, Serge; Graziano, Amy

    2013-05-01

    Jean-Martin Charcot (1825-93) was a well-known French neurologist. Although he is widely recognized for his discovery of several neurological disorders and his research into aphasia, Charcot's ideas about how the brain processes music are less well known. Charcot discussed the music abilities of several patients in the context of his 'Friday Lessons' on aphasia, which took place at the Salpêtrière Hospital in Paris in 1883-84. In his most comprehensive discussion about music, Charcot described a professional trombone player who developed difficulty copying music notation and playing his instrument, thereby identifying a new isolated syndrome of music agraphia without aphasia. Because the description of this case was published only in Italian by one of his students, Domenico Miliotti, there has been considerable confusion and under-acknowledgement of Charcot's ideas about music and the brain. In this paper, we describe Charcot's ideas regarding music and place them within the historical context of the growing interest in the neurological underpinnings of music abilities that took place in the 1880s.

  20. A new thermal vacuum facility at the Martin Marietta Waterton plant

    NASA Technical Reports Server (NTRS)

    Watson, Robert N.; Bonn, John W.

    1992-01-01

    A new thermal-vacuum facility has been recently completed at the Martin Marietta Waterton plant near Denver, Colorado. The facility was designed, fabricated, installed, and tested as a turn-key project by Pitt-Des Moines Inc. and CVI Inc. The chamber has a 5.49 M by 6.10 M (18 ft by 20 ft) flat floor and a half-cylindrical roof with a diameter of 5.49 M (18 ft). Both ends of the chamber have full cross section doors, with one equipped with translating motors for horizontal motion. The chamber is provided with four 0.91 M (36 inches) cryopumps to obtain an ultimate pressure of 9 x 10(exp -8) Torr (Clean-Dry-Empty). The thermal shroud is designed to operate at a maximum of -179 C (-290 F) with an internal heat input of 316 MJ/Hr (300,000 BTU/Hr) using liquid nitrogen. The shroud is also designed to operate at any temperature between -156 C (-250 F) and 121 C (+250 F) using gaseous nitrogen, and heat or cool at a rate of 1.1 C (2 F) per minute.

  1. Final Technical Report for the Martin County Hydrogen Fuel Cell Development Project

    SciTech Connect

    Eshraghi, Ray

    2011-03-09

    In September 2008, the U.S. Department of Energy and Martin County Economic Development Corporation entered into an agreement to further the advancement of a microtubular PEM fuel cell developed by Microcell Corporation. The overall focus of this project was on research and development related to high volume manufacturing of fuel cells and cost reduction in the fuel cell manufacturing process. The extrusion process used for the microfiber fuel cells in this project is inherently a low cost, high volume, high speed manufacturing process. In order to take advantage of the capabilities that the extrusion process provides, all subsequent manufacturing processes must be enhanced to meet the extrusion line’s speed and output. Significant research and development was completed on these subsequent processes to ensure that power output and performance were not negatively impacted by the higher speeds, design changes and process improvements developed in this project. All tasks were successfully completed resulting in cost reductions, performance improvements and process enhancements in the areas of speed and quality. These results support the Department of Energy’s goal of fuel cell commercialization.

  2. Al Composites

    NASA Astrophysics Data System (ADS)

    Chandanayaka, Tharaka; Azarmi, Fardad

    2014-05-01

    In the present study, cold spraying technique was used to fabricate a metal matrix composite (MMC) that consists of Ni matrix and 20 vol.% Ni3Al particles at two different particle sizes as reinforcement. This study intends to investigate the effect of reinforcement particle size on microstructural and mechanical properties of cold sprayed MMCs. Two different Ni3Al powders with nominal particle size of -45 to +5 and +45 to 100 μm were used as reinforcement in this study. Cold sprayed Ni-Ni3Al samples were subjected to the microstructural observation and characterization prior to any mechanical testing. Then, samples were tested using nano-indentation, Knoop hardness, Vickers hardness, and Resonance frequency to evaluate their mechanical properties. No significant changes were observed in microstructural characteristics due to different particle sizes. The results obtained from a variety of mechanical testings indicated that the increasing reinforcement particle size resulted in the slight reduction of mechanical properties such as elastic modulus and hardness in cold sprayed MMCs. The mechanical interlock between deposited particles defines the bonding strength in cold sprayed samples. Small size particles have a higher velocity and impact resulting in stronger interlock between deformed particles.

  3. Prevalence of ciguatoxins in lionfish (Pterois spp.) from Guadeloupe, Saint Martin, and Saint Barthélmy Islands (Caribbean).

    PubMed

    Soliño, Lucía; Widgy, Saha; Pautonnier, Anthony; Turquet, Jean; Loeffler, Christopher R; Flores Quintana, Harold A; Diogène, Jorge

    2015-08-01

    Lionfish (Pterois spp.) are invasive species that have recently spread throughout the Caribbean. Lionfish are available for purchase in local markets for human consumption in several islands of the region. We examined the prevalence of ciguatoxins (CTXs) in lionfish from the French Antilles, a ciguatera-endemic region. The neuroblastoma-2a (N2a) cell assay was used to assess composite cytotoxicity in 120 fish samples collected from the surrounding waters of Guadeloupe (n = 60), Saint Barthélemy Islands (n = 55) and Saint Martin (n = 5). Twenty-seven of these samples exhibited CTX-like activity by the N2a assay. Ciguatoxin (CTX) was confirmed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) in multiple samples that presented highest composite toxicity levels by N2a. Those fish found to contain CTXs were all from Saint Barthélemy. Lionfish from Guadeloupe and Saint Martin did not exhibit toxin activity, although the sample size from Saint Martin was insufficient to draw any conclusions as to the incidence of CTXs. In this study, we provide information about the potential hazard of ciguatera associated with the consumption of lionfish from known endemic areas. We also demonstrate the utility of the cell-based assay combined with LC-MS/MS to assess activity and to provide structural confirmation of CTXs respectively.

  4. Flexibility in flight behaviour of barn swallows (Hirundo rustica) and house martins (Delichon urbica) tested in a wind tunnel.

    PubMed

    Bruderer, L; Liechti, F; Bilo, D

    2001-04-01

    The flight behaviour of barn swallows (Hirundo rustica) and house martins (Delichon urbica) was tested in a wind tunnel at 15 combinations of flight angles and speeds. In contrast to that of most other small passerines, the intermittent flight of hirundines rarely consists of regular patterns of flapping and rest phases. To vary mechanical power output, both species used intermittent flight, controlling the number of single, pulse-like wingbeats per unit time. House martins in descent tended to concentrate their wingbeats into bursts and performed true gliding flight during rest phases. Barn swallows mainly performed partial bounds during brief interruptions of upstrokes, which they progressively prolonged with decreasing flight angle. Thus, identification of distinct flapping phases to calculate wingbeat frequencies was not feasible. Instead, an effective wingbeat frequency for flight intervals of 20 s, including partial bounds, was introduced. The effective wingbeat frequencies of house martins (N=3) ranged from 2 to 10.5 s(-1), those of barn swallows (N=4) from 2.5 to 8.5 s(-1). In both hirundine species, effective wingbeat frequency was found to decrease almost linearly with decreasing flight angle. With changes in air speed, wingbeat frequency varied according to a U-shaped curve, suggesting a minimum power speed of roughly 9 m s(-1). The duration of the down- and upstrokes varied systematically depending on flight angle and air speed.

  5. Commentary: Persistent Time Estimation Deficits in ADHD? From Developmental Trajectories to Individual Targets for Intervention--Reflections on Doehnert et al. (2013)

    ERIC Educational Resources Information Center

    Holtmann, Martin

    2013-01-01

    In this commentary, Martin Holtmann, discusses Doehnert and colleagues' article in this issue (Doehnert et al., 2013). Holtmann comments that the article illustrates the value of longitudinal electrophysiological and experimental approaches to disentangle different pathways underlying the phenotype of ADHD, and points out that their…

  6. The debt of John Ray and Martin Lister to Guillaume Rondelet of Montpellier

    PubMed Central

    Lewis, Gillian

    2012-01-01

    The fame of its medical university and its reputation for field botany attracted visitors from all over Europe to seventeenth-century Montpellier. It was there that Martin Lister first made the acquaintance of John Ray in 1665. Twenty years later, in London, they cooperated in the production of the ambitious and lavishly illustrated Historia Piscium based on the notes of the late Francis Willughby. Ray, Lister and others contributed additional material. In their own work on fishes, cetaceans and shellfish Ray and Lister were considerably indebted to the Libri de piscibus marinis of an earlier Montpellier professor, Guillaume Rondelet, whose Aristotelian/Galenic approach to the study of medicine and living things was distinguished by a quite exceptional level of knowledge about aquatic species, based on a secure grasp of the classical and contemporary literature, but above all on his own observations in rivers, lakes, lagoons and the open sea, and his domestication (and dissection) of marine species in ponds and aquaria at his country house. Rondelet's book proved useful to Ray and to Lister as a work of reference, as a stimulus for reflection on biological problems, as an aid to nomenclature, as a source of precise descriptions of species, in both words and pictures, as a model to be improved upon in taxonomy, as a warning against reliance on hearsay, and as a valuable account of observations and experiments. Ray used it in much the same way as he used the work of those sixteenth-century botanists who met with his approval. Several of these had been Rondelet's pupils.

  7. Hydrocarbon habitat of San Martin and Cashiriari gas/condensate discoveries, southern Ucayali basin of Peru

    SciTech Connect

    Mohler, H.P.

    1989-03-01

    Fifteen trillion ft/sup 3/ of wet gas in place containing some 800 million bbl of associated liquids have been discovered in the San Martin and Cashiriari anticlines, which are located in the Subandean thrusted foldbelt of the Southern Ucayali basin of Peru. Ultimate recoverable volumes are estimated at 10 trillion ft/sup 3/ of gas and 500 million bbl of liquids including condensate (C5+) and LPG (C3/C4). Most of these potentially recoverable reserves are located in the Cashiriari structure (80% of the gas and 70% of the liquids). They were encountered in fair-excellent sandstone reservoirs of Early Permian and Late Cretaceous age and are thought to be derived from Carboniferous coaly shale source rocks. The Paleozoic (pre-Andean) sedimentary megacycle is represented by deeper shallow marine clastics of Ordovician to Early Carboniferous age (5000 m maximum), including Silurian glaciomarine deposits, overlain by up to 1200 m of Permian-Carboniferous platform carbonates and 600-1000( ) m of Lower Permian-lower Upper Permian coastal-continental clastics. The Mesozoic-Tertiary (Andean) megacycle is represented by a Campanian-Maastrichtian transgressive marine clastic/carbonate and overlying regressive clastic sequence (450 m maximum), followed by several thousand meters of Molasse-type continental infill of the Tertiary foredeep, which was created by the crustal loading in the wake of the compressional Andean orogeny (Peru, Inca, and Quechua phases). Late Tertiary folding and thrusting of the sub-Andean belt was superseded by regional Pleistocene uplift, and parts of the foreland continue to subside.

  8. Chapter 15: Jean-Martin Charcot and the anatomo-clinical method of neurology.

    PubMed

    Goetz, Christopher G

    2010-01-01

    Jean-Martin Charcot (1825-1893) was the premier clinical neurologist of the 19th century. Charcot's research was anchored in the anatomo-clinical method, a two-part methodology that linked clinical signs with anatomical lesions. The first step of this method involved the careful documentation of clinical signs with longitudinal observation. At the time of death, the second step involved autopsy examination of the brain and spinal cord. With combined clinical and anatomical data, Charcot was able to suggest concrete clinical-anatomical correlations. This method helped to define the tracts and nuclei responsible for normal and abnormal neurological signs and was pivotal to a new classification of neurological diseases based on anatomy. The best-developed example of this method was Charcot's work with motor system degenerative disorders, specifically amyotrophic lateral sclerosis. These studies led to the international designation of amyotrophic lateral sclerosis as Charcot's disease. Other examples of the fruits of the anatomo-clinical method included several stroke syndromes and the linkage of specific signs to specific lesions in multiple sclerosis. The discipline fostered cortical localization theory, which moved neurologists away from the concept of the brain as a homogenous organ in preference to the concept that brain regions controlled specific motor, sensory and language functions. Charcot's attempts to apply his anatomo-clinical method to the knotty neurological diagnosis of hysteria led him to experiments and conclusions that drew criticism and even scorn from colleagues. These events tarnished Charcot's reputation at the close of his career. In the context of Charcot's extensive discoveries and lasting contributions, the anatomo-clinical method remains the anchor of modern neurological diagnosis and is Charcot's most important contribution to clinical neurology.

  9. A new species of the genus Hypleurochilus (Teleostei: Blenniidae) from Trindade Island and Martin Vaz Archipelago, Brazil.

    PubMed

    Pinheiro, Hudson T; Gasparini, João Luiz; Rangel, Carlos A

    2013-01-01

    A new species of the genus Hypleurochilus, endemic to Trindade Island and Martin Vaz Archipelago, off Brazil, is described. Hypleurochilus brasil sp. n. differs from its congeners in color pattern and anal-ray counts. A recent study shows a close relationship between H. brasil sp. n. and H. fissicornis. This new species is recorded from 3 to 15 m depth, solitary or in small groups (up to 10 individuals), always in small holes or associated with sea-urchins and sponges on the rocky reefs. Hypleurochilus brasil sp. n. is the eleventh recognized species of Hypleurochilus and the third species of this genus reported from the Brazilian Province. PMID:26240899

  10. Impression creep characterization of TiAl weldments

    SciTech Connect

    Gibbs, W.S.; Aikin, R.M. Sr.; Martin, P.L.; Patterson, R.A.

    1990-01-01

    The Impression Creep technique has been applied to XD{trademark} TiAl weldments to evaluate the local creep resistance of the fusion zone and the heat affected zone. The material used in this study was TiAl produced by Martin Marietta Research Laboratories, using their patented ingot processing which incorporates 1 to 10 {mu}m diameter particles of carbide, nitride or boride compounds. The impression creep technique uses a small indenter to locally evaluate the creep resistance of the heterogeneous microstructure developed during the welding process. The indenters used in this investigation were 1 mm in diameter. Results obtained from the impression creep tests are compared to results obtained from constant stress tensile creep tests on the base material. Creep resistance of the heat affected zone and the fusion zone are compared to and contrasted with the base material strength. 19 refs., 2 figs., 2 tabs.

  11. Availability and Quality of Water from Underground Coal Mines in Johnson and Martin Counties, Kentucky

    USGS Publications Warehouse

    Mull, D.S.; Cordivio1a, Steven; Risser, Dennis W.

    1981-01-01

    This report provides water users with detailed information on the location, quantity, and quality of water available from underground coal mines in the Breathitt Formation of Pennsylvanian age in part of eastern Kentucky. The principal coal seams mined are the Van Lear in Johnson County and the Alma in Martin County. Coal mines that contained water were located by field inventory and coal-mine maps. The principal factors that affect the occurrence of water in coal mines are the size of the recharge area overlying the mine, the intensity and duration of precipitation, and the altitude of the mine relative to that of the nearest perennial stream. Ten above-drainage mines (that is, mines at higher elevations than that of the nearest perennial stream) are considered potential sources of water. Discharge from these mines ranged from 12 to 1,700 gallons per minute. The highest sustained discharge from a mine ranged from 750 to 1,200 gallons per minute. The water in coal mines is part of the hydrologic system and varies seasonally with precipitation. Annual discharge from most above-drainage mines ranged from 3 to 10 percent of annual precipitation on the 1and-surface area above the mine. Eight below-drainage mines are considered potential sources of water. Two were test-pumped at rates of 560 to 620 gallons per minute for as long as 6 hours. After test pumping the Warfield Mining No. 1 mine during September 1977 and March 1978, the recovery (or recharge) rates were significantly different. In September, the recharge rate was about 1,150 gallons per minute, but in March the recharge rate was 103,500 gallons per minute. This difference reflects the seasonal variations in the amount of water available to the ground-water system. Estimates of water stored in below-drainage mines ranged from 22 to 1,462 million gallons. This storage represents a safety factor sufficient to provide water through periods of limited recharge to the mine. Most mine water is of the calcium

  12. In memoriam: George Martin Baer, DVM, MPH, 1936-2009. The father of oral rabies vaccination.

    PubMed

    Grunenwald, Paul E

    2009-01-01

    George Martin Baer, known for his development of the oral rabies vaccine instrumental in rabies control in Europe, died on 2 June 2009 at the age of 73 in Mexico City, Mexico. He was born on 12 January 1936 in London, England, to German immigrants who had fled Nazi Germany. His family emigrated to the United States in 1940 where he grew up in New Rochelle, New York. George had a love of animals, particularly horses, which may have influenced his career path. He earned an undergraduate degree in agricultural sciences in 1954 from Cornell University followed by a degree in veterinary medicine in 1959. He then went on to earn a master's degree in public health in 1960 from the University of Michigan. During some time in Mexico, George met and fell in love with his wife, Maria Olga Lara. Thanks to James H. Steele, his long-time friend and mentor, he started his public health career with the Centers for Disease Control (CDC) and was assigned to the New York State Health Department where he learned epidemiology and virology. He went on to work on bat rabies at the CDC's Southwest Rabies Investigations Laboratory in New Mexico. From 1966 to 1969, he worked with the National Institute for Livestock Research (Instituto Nacional de Investigaciones Pecuarias: INIP) in Mexico and helped develop the Plan Derriengue to control paralytic bovine rabies which became the early work in the development of Mexico's rabies control programmes. He returned to Atlanta in 1969 to direct the CDC Rabies Laboratory. There, he led a team of researchers in developing an oral rabies vaccine for wildlife, earning him the title 'The Father of Oral Rabies Vaccination'. His text, The Natural History of Rabies, first published in 1975 and again in 1991, continues to be a definitive international reference for rabies control. After his retirement, George returned to Mexico and continued his research and training, working to develop not only public health programmes, but new researchers as well. At the

  13. Characterization of floodflows along the Arkansas River without regulation by Pueblo Reservoir, Portland to John Martin Reservoir, Southeastern Colorado

    USGS Publications Warehouse

    Little, John R.; Bauer, Daniel P.

    1981-01-01

    The need for a method for estimating flow characteristics of flood hydrographs between Portland, Colo., and John Martin Reservoir has been promoted with the construction of the Pueble Reservoir. To meet this need a procedure was developed for predicting floodflow peaks, traveltimes, and volumes at any point along the Arkansas River between Portland and John Martin Reservoir without considering the existing Pueble Reservoir detention effects. A streamflow-routing model was calibrated initially and then typical flood simulations were made for the 164.8-mile study reach. Simulations were completed for varying magnitudes of floods and antecedent streamflow conditions. Multiple regression techniques were then used with simulation results as input to provide predictive relationships for food peak, volume, and traveltime. Management practices that may be used to benefit water users in the area include providing methods for the distribution and allotment of the flood waters upstream of Portland to different downstream water users according to Colorado water law and also under the Arkansas River Compact. (USGS)

  14. High-Speed Wind-Tunnel Tests of a Model of the Lockheed YP-80A Airplane Including Correlation with Flight Tests and Tests of Dive-Recovery Flaps

    NASA Technical Reports Server (NTRS)

    Cleary, Joseph W.; Gray, Lyle J.

    1947-01-01

    This report contains the results of tests of a 1/3-scale model of the Lockheed YP-90A "Shooting Star" airplane and a comparison of drag, maximum lift coefficient, and elevator angle required for level flight as measured in the wind tunnel and in flight. Included in the report are the general aerodynamic characteristics of the model and of two types of dive-recovery flaps, one at several positions along the chord on the lower surface of the wing and the other on the lower surface of the fuselage. The results show good agreement between the flight and wind-tunnel measurements at all Mach numbers. The results indicate that the YP-80A is controllable in pitch by the elevators to a Mach number of at least 0.85. The fuselage dive-recovery flaps are effective for producing a climbing moment and increasing the drag at Mach numbers up to at least 0.8. The wing dive-recovery flaps are most effective for producing a climbing moment at 0.75 Mach number. At 0.85 Mach number, their effectiveness is approximately 50 percent of the maximum. The optimum position for the wing dive-recovery flaps to produce a climbing moment is at approximately 35 percent of the chord.

  15. The Lockheed alternate partial polarizer universal filter

    NASA Technical Reports Server (NTRS)

    Title, A. M.

    1976-01-01

    A tunable birefringent filter using an alternate partial polarizer design has been built. The filter has a transmission of 38% in polarized light. Its full width at half maximum is .09A at 5500A. It is tunable from 4500 to 8500A by means of stepping motor actuated rotating half wave plates and polarizers. Wave length commands and thermal compensation commands are generated by a PPD 11/10 minicomputer. The alternate partial polarizer universal filter is compared with the universal birefringent filter and the design techniques, construction methods, and filter performance are discussed in some detail. Based on the experience of this filter some conclusions regarding the future of birefringent filters are elaborated.

  16. Geochemistry, petrology, and palynology of the Pond Creek coal bed, northern Pike and southern Martin counties, Kentucky

    USGS Publications Warehouse

    Hower, J.C.; Ruppert, L.F.; Eble, C.F.; Clark, W.L.

    2005-01-01

    The geochemistry, petrology, and palynology of the Duckmantian-age Pond Creek coal bed were investigated in northern Pike and southern Martin counties, eastern Kentucky. The coal bed exhibits significant vertical variation in the investigated geochemical parameters, with many diagenetic overprints of the original geochemistry. Included in the range of geochemical signatures are the presence of elements, particularly TiO2 and Zr, suggesting the detrital influences at the time of deposition of a low-vitrinite durain; a high CaO zone with elevated B/Be, both suggesting marine influence, in a lithotype in the middle of the coal bed; and the postdepositional emplacement of pyrite in the uppermost lithotype. Individual lithotypes, each representing distinct depositional environments, all complicated to some degree by diagentic overprints, comprise the complex history of the coal bed. ?? 2004 Elsevier B.V. All rights reserved.

  17. Public health assessment for Solitron Microwave, Port Salerno, Martin County, Florida, Region 4, CERCLIS number FLD045459526. Final report

    SciTech Connect

    1999-08-31

    Solitron Microwave, on Cove Road in Port Salerno, Martin County, Florida, covers approximately 20 acres. On-site surface water, sediment, soil and groundwater are contaminated with metals and organic chemicals. Off-site groundwater is contaminated with metals and organic chemicals. In this public health assessment, the authors evaluate the potential for illnesses to be caused by exposure to contaminated surface soil, surface water, sediment, and groundwater. Off-site groundwater and on-site soil are completed exposure pathways. On-site groundwater is a potential exposure pathway. Surface water and sediment are not completed exposure pathways. Currently the site is a potential public health hazard because people could be exposed in the future to contaminated on-site groundwater.

  18. [I-THOU Eternal relationship in the life of caregivers of children with AIDS: study based on Martin Buber philosophy].

    PubMed

    Schaurich, Diego

    2011-01-01

    This phenomenological study aimed at understanding, in the light of Martin Buber's philosophy, what is to be a caregiver of children with AIDS. The phenomenological interview guided the meeting with seven caregivers of children with AIDS, selected in a teaching hospital of Porto Alegre-RS, southern of Brazil. The data were interpreted in the light of hermeneutics, emerging the unit of meaning Dialogues 'between' the familiar I and the Eternal THOU. The dialogues take place in the search for answers that allow the understanding of the significance of the impact and challenges they face while living with AIDS. As well, they reveal hope in changes, in the cure and in a vaccine development. We believe that knowing the importance of dialogue in the context of HIV/AIDS epidemic provide the development of a nursing care that brings together the technical-scientific and humanistic aspects. PMID:22378509

  19. Jean-Martin Charcot, father of modern neurology: an homage 120 years after his death.

    PubMed

    Gomes, Marleide da Mota; Engelhardt, Eliasz

    2013-10-01

    Jean-Martin Charcot was a pioneer in a variety of subjects, including nervous system diseases; anatomy; physiology; pathology; and diseases of ageing, joints, and lungs. His medical achievements were mainly based on his anatomopathological proficiency, his observation, and his personal thoroughness that favored the delineation of the nosology of the main neurological diseases, including multiple sclerosis, amyotrophic lateral sclerosis, Parkinson's disease, peroneal muscular atrophy, and hysteria/epilepsy. The link of this anatomoclinical method with iconographic representations and theatrical lessons, and the rich bibliographical documentations, carried out in a crowded barn for diseased people--Salpetrière Hospital, were the basis of his achievements, which are still discussed 120 years after his death.

  20. Health hazard evaluation report HETA 93-1062-2558, Texas Utilities Electric Company, Martin Lake Steam Electric Station, Tatum, Texas

    SciTech Connect

    Malkin, R.; Moss, C.E.; Reh, C.M.; Ragab, M.

    1996-01-01

    In response to a request from workers at the Texas Utilities Electric Company (SIC-4911), Martin Lake Steam Electric Station in Tatum, Texas, the incidence of neurologic symptoms and exposure to electromagnetic fields and organophosphates were investigated. Workers reported neurological symptoms, including memory loss, dizziness and fatigue. A site visit to the station revealed electromagnetic field levels below the current occupational standard of 10 gauss. The use of an organophosphate containing fire resistant hydraulic fluid, Fyrquel-EH (1330785), was reported by employees. A significant correlation was identified between memory of past symptoms indicative of acute organophosphate exposure after working with Fyrquel-EH and current symptoms; however, blood cholinesterase levels were all within the normal range and no relevant neurologic abnormalities were noted on neurological examinations. The authors conclude that a hazard existed from the use of Fyrquel-EH. The authors recommend measures for the safe handling of organophosphate compounds.

  1. Martin Gibbs (1922-2006): Pioneer of (14)C research, sugar metabolism & photosynthesis; vigilant Editor-in-Chief of Plant Physiology; sage Educator; and humanistic Mentor.

    PubMed

    Black, Clanton C

    2008-01-01

    The very personal touch of Professor Martin Gibbs as a worldwide advocate for photosynthesis and plant physiology was lost with his death in July 2006. Widely known for his engaging humorous personality and his humanitarian lifestyle, Martin Gibbs excelled as a strong international science diplomat; like a personal science family patriarch encouraging science and plant scientists around the world. Immediately after World War II he was a pioneer at the Brookhaven National Laboratory in the use of (14)C to elucidate carbon flow in metabolism and particularly carbon pathways in photosynthesis. His leadership on carbon metabolism and photosynthesis extended for four decades of working in collaboration with a host of students and colleagues. In 1962, he was selected as the Editor-in-Chief of Plant Physiology. That appointment initiated 3 decades of strong directional influences by Gibbs on plant research and photosynthesis. Plant Physiology became and remains a premier source of new knowledge about the vital and primary roles of plants in earth's environmental history and the energetics of our green-blue planet. His leadership and charismatic humanitarian character became the quintessence of excellence worldwide. Martin Gibbs was in every sense the personification of a model mentor not only for scientists but also shown in devotion to family. Here we pay tribute and honor to an exemplary humanistic mentor, Martin Gibbs.

  2. Efficacy of an entomopathogenic fungus, Isaria fumosorosea and an insect growth regulator against the rugose spiraling whitefly, Aleurodicus rugioperculatus Martin (Hemiptera: Aleyrodidae)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Aleurodicus rugioperculatus Martin, infamous as gumbo limbo or rugose spiraling whitefly is a new addition in the list of devastating whitefly species found in Florida. It is a newly introduced pest of Central American origin, reported first time in Florida from Miami-Dade County in 2009. Since then...

  3. Court Documents Related to Martin Luther King, Jr., and Memphis Sanitation Workers. The Constitution Community: Postwar United States (1945 to Early 1970s).

    ERIC Educational Resources Information Center

    Perry, Douglas

    During inclement weather in Memphis, Tennessee in February 1968, two separate incidents caused black sanitation workers to strike for job safety, better wages and benefits, and union recognition. Mayor Henry Loeb was unsympathetic and opposed to the union. Martin Luther King agreed to lend his support to the sanitation workers and spoke at a rally…

  4. Structural Changes in the Higher Education System in Japan--Reflections on the Comparative Study of Higher Education Using the Theory of Martin Trow

    ERIC Educational Resources Information Center

    Amano, Ikuo

    2010-01-01

    Higher education systems are now in a global state of flux. Japan is no exception. The most persuasive framework for analyzing the basic structure and direction of change is the structural-historical theory of the American sociologist Martin Trow. This is a generalization of his "elite to mass to universal" based on first American and then…

  5. The Mutable Prophet: Dr. Martin Luther King, Jr., and the Echo Chamber Campaign of "U. S. News & World Report," 1964-1968.

    ERIC Educational Resources Information Center

    Lentz, Richard

    Between 1964 and 1968, "U. S. News and World Report" engaged in symbolic discourse with its readership through its coverage of Dr. Martin Luther King, Jr. "U. S. News" faced a dilemma in the mingling of King's force as a symbol with the power exerted by the egalitarian principles that Gunnar Myrdal identified as components of the American Creed.…

  6. A Summary of Findings and Recommendations for Curriculum Development Needs Assessment of the Educable Mentally Retarded in Glades, Martin and Okeechobee Counties.

    ERIC Educational Resources Information Center

    Kinsaul, John M.; And Others

    Presented were findings and recommendations of a curriculum needs assessment study on programs, job opportunities, and services for 312 educable mentally retarded students (EMR) in three Florida counties (Glades, Martin, and Okeechobee). Use of a systems model for planning, implementing, and evaluating the study was explained. Of the findings…

  7. Martin Gibbs (1922-2006): Pioneer of (14)C research, sugar metabolism & photosynthesis; vigilant Editor-in-Chief of Plant Physiology; sage Educator; and humanistic Mentor.

    PubMed

    Black, Clanton C

    2008-01-01

    The very personal touch of Professor Martin Gibbs as a worldwide advocate for photosynthesis and plant physiology was lost with his death in July 2006. Widely known for his engaging humorous personality and his humanitarian lifestyle, Martin Gibbs excelled as a strong international science diplomat; like a personal science family patriarch encouraging science and plant scientists around the world. Immediately after World War II he was a pioneer at the Brookhaven National Laboratory in the use of (14)C to elucidate carbon flow in metabolism and particularly carbon pathways in photosynthesis. His leadership on carbon metabolism and photosynthesis extended for four decades of working in collaboration with a host of students and colleagues. In 1962, he was selected as the Editor-in-Chief of Plant Physiology. That appointment initiated 3 decades of strong directional influences by Gibbs on plant research and photosynthesis. Plant Physiology became and remains a premier source of new knowledge about the vital and primary roles of plants in earth's environmental history and the energetics of our green-blue planet. His leadership and charismatic humanitarian character became the quintessence of excellence worldwide. Martin Gibbs was in every sense the personification of a model mentor not only for scientists but also shown in devotion to family. Here we pay tribute and honor to an exemplary humanistic mentor, Martin Gibbs. PMID:17828443

  8. "I Never Imagined that the Time Would Come:" Martin Cole, the Growing up Controversy and the Limits of School Sex Education in 1970's England

    ERIC Educational Resources Information Center

    Limond, David

    2008-01-01

    This piece concerns the controversy engendered by Martin Cole's 1971 film Growing Up, an attempt to start a revolution in school sex education practices by showing explicit scenes of unsimulated sexual acts. Although Cole's film was never widely shown it marked a turning point in English school sex education by defining the limits of the…

  9. 77 FR 51023 - Application for Final Commitment for a Long-Term Loan or Financial Guarantee in Excess of $100...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-23

    ... Supplier: Lockheed Martin Corporation. Obligor: Vietnam acting by and through the Ministry of Finance... proprietary business information; information which, if disclosed, would violate the Trade Secrets Act;...

  10. Jean-Martin Charcot and art: relationship of the "founder of neurology" with various aspects of art.

    PubMed

    Bogousslavsky, Julien; Boller, François

    2013-01-01

    Jean-Martin Charcot (1825-1893), the "father of neurology" in France and much beyond, was also the man who established academic psychiatry in Paris, differentiating it from clinical alienism. In his teaching, he used artistic representations from previous centuries to illustrate the historical developments of hysteria, mainly with the help of his pupil Paul Richer. Charcot liked to draw portraits (in particular, sketches of colleagues during boring faculty meetings and students' examinations), caricatures of himself and others, church sculptures, landscapes, soldiers, etc. He also used this skill in his clinical and scientific work; he drew histological or anatomic specimens, as well as patients' features and demeanor. His most daring artistic experiments were drawing under the influence of hashish. Charcot's tastes in art were conservative; he displayed no affinity for the avant-gardes of his time, including impressionism, or for contemporary musicians, such as César Franck or Hector Berlioz. Léon Daudet, son of Charcot's former friend and famous writer Alphonse Daudet, described Charcot's home as a pseudo-gothic kitsch accumulation of heteroclite pieces of furniture and materials. However, as Henry Meige wrote a few years after his mentor's death, Charcot the artist remains "inseparable from Charcot the physician." PMID:24041281

  11. Jean-Martin Charcot and art: relationship of the "founder of neurology" with various aspects of art.

    PubMed

    Bogousslavsky, Julien; Boller, François

    2013-01-01

    Jean-Martin Charcot (1825-1893), the "father of neurology" in France and much beyond, was also the man who established academic psychiatry in Paris, differentiating it from clinical alienism. In his teaching, he used artistic representations from previous centuries to illustrate the historical developments of hysteria, mainly with the help of his pupil Paul Richer. Charcot liked to draw portraits (in particular, sketches of colleagues during boring faculty meetings and students' examinations), caricatures of himself and others, church sculptures, landscapes, soldiers, etc. He also used this skill in his clinical and scientific work; he drew histological or anatomic specimens, as well as patients' features and demeanor. His most daring artistic experiments were drawing under the influence of hashish. Charcot's tastes in art were conservative; he displayed no affinity for the avant-gardes of his time, including impressionism, or for contemporary musicians, such as César Franck or Hector Berlioz. Léon Daudet, son of Charcot's former friend and famous writer Alphonse Daudet, described Charcot's home as a pseudo-gothic kitsch accumulation of heteroclite pieces of furniture and materials. However, as Henry Meige wrote a few years after his mentor's death, Charcot the artist remains "inseparable from Charcot the physician."

  12. The Martin Buber-Carl Jung disputations: protecting the sacred in the battle for the boundaries of analytical psychology.

    PubMed

    Stephens, B D

    2001-07-01

    The Martin Buber-C.G. Jung disputations rather than the Freud-Jung split or Samuels's post-Jungian categories is considered the more significant paradigm for understanding the conflicts erupting within the Jungian community surrounding clinical practice and candidate training. Looking through the lens of the Freud-Jung split keeps the conflicts focused on the theoretical and technical differences concerning such concepts as object-relations, transference-countertransference, neutrality, clinical boundaries. The Buber-Jung disputations move the discussion into a different and more foundational arena, namely the vertical and horizontal psychological considerations of the experience of the Sacred and how that dimension is supported or thwarted in clinical practice and candidate training by the respective allegiances of the 'warriors' in the 'Holy Wars'. Experiencing the texture of the Buber-Jung disputations as well as grappling with their content suggests that a more dialogical approach to actual clinical material may be a more fruitful way to understand the work of analysis and the business of candidate training.

  13. Prey selection by nesting House Martins Delichon urbica Linné, 1758 (Aves: Hirundinidae) in Algiers suburbs (Algeria).

    PubMed

    Merzouki, Youcef; Souttou, Karim; Sekour, Makhlouf; Daoudi-Hacini, Samia; Doumandji, Salaheddine

    2014-01-01

    The diet of the House Martin Delichon urbica was analyzed in a suburban area in Pins maritimes, northeast of Algiers (Algeria). The diet was determined by analyzing 120 faecal samples collected from a breeding colony between April and September 2007. Insects were the most numerous prey types (99.86%). Hymenopterans were the dominant preys (56.99%), followed by Coleopterans (20.14%), Homopterans (14.22%), Heteropterans (5.45%), and Dipterans (3.10%). Division of the prey items into families demonstrated that the highest relative frequency was large Hymenopterans in the family Formicidae (54.0%). The dominant species in the diet was Tetramorium biskrensis, which comprised 32.6% of the diet. It was followed by Camponotus barbaricus (6.9%) and Monomorium salomonis (5.6%). Comparison between diet and availability of preys using the Savage index showed that T. biskrensis, Crematogaster scutelaris, Pheidole pallidula, Diptera sp. unident. and Aphidae sp. unident. were positively selected by D. urbica.

  14. Gypsum-hosted endolithic communities of the Lake St. Martin impact structure, Manitoba, Canada: spectroscopic detectability and implications for Mars

    NASA Astrophysics Data System (ADS)

    Rhind, T.; Ronholm, J.; Berg, B.; Mann, P.; Applin, D.; Stromberg, J.; Sharma, R.; Whyte, L. G.; Cloutis, E. A.

    2014-09-01

    There is increasing evidence that Mars may have once been a habitable environment. Gypsum is targeted in the search for Martian biosignatures because it can host extensive cryptoendolithic communities in extreme terrestrial environments and is widespread on Mars. In this study the viability of using different spectroscopy-based techniques to identify the presence of gypsum endolithic communities was investigated by analysing various cryptoendoliths collected from the Lake St. Martin impact crater (LSM), a Mars analogue site found in Manitoba, Canada. Concurrently, the cryptoendolithic microbial community structure present was also analysed to aid in assigning spectroscopic features to microbial community members. Two main morphologies of endolithic communities were collected from gypsum deposits at LSM: true cryptoendolithic communities and annular deposits on partially buried boulders and cobbles <1 cm below the soil surface. Endolithic communities were found to be visibly present only in gypsum with a high degree of translucency and could occur as deep as 3 cm below the exterior surface. The bacterial community was dominated by a phylum (Chloroflexi) that has not been previously observed in gypsum endoliths. The exterior surfaces of gypsum boulders and cobbles are devoid of spectroscopic features attributable to organic molecules and detectable by reflectance, Raman, or ultraviolet-induced fluorescence spectroscopies. However, exposed interior surfaces show unique endolithic signatures detectable by each spectroscopic technique. This indicates that cryptoendolithic communities can be detected via spectroscopy-based techniques, provided they are either partially or fully exposed and enough photon-target interactions occur to enable detection.

  15. Premutation for the Martin-Bell syndrome analyzed in a large Sardinian family: III. Molecular analysis with the StB12.3 probe

    SciTech Connect

    Grasso, M.; Perroni, L.; Dagna-Bricarelli, F.

    1996-08-09

    This report complements a series of clinical, cytogenetical, and psychological studies previously reported on a large Sardinian pedigree segregating for premutations and full mutations associated with the Martin-Bell syndrome (MBS). Using the StB12.3 probe, we report now the molecular classification of all of the critical members of the pedigree. These molecular findings are evaluated against the variable phenotypic manifestations of the disease in the course of a six-generation segregation of an MBS premutation allegedly present in a common female progenitor of 14 MBS male patients and 9 female MBS heterozygotes seen in the last two generations. The nature and stepwise progression of MBS-premutations toward the fully manifested Martin-Bell syndrome and the possibility of reverse mutational events toward the normal allele are discussed with respect to the application of the presently available diagnostic tools in genetic counseling. 12 refs., 1 fig.

  16. From the Bench to the Clinic Part 1: Martin McIntosh, Ph.D., Introduces His Lab's Immunotherapy Research | Office of Cancer Genomics

    Cancer.gov

    The field of immunotherapy is rapidly advancing and genomics techniques are being incorporated to add a “precision” approach. OCG spoke with two CTD2 investigators from the Fred Hutchinson Cancer Research Center (FHCRC) about new advances in immunotherapy. For the first article of this two-part series, we interviewed Martin McIntosh, Ph.D., member of the Fred Hutchinson Translational Research program and previously Program Head in Computational Biology at FHCRC/University of Washington Comprehensive Cancer Center.

  17. MaRIE 1.0: A briefing to Katherine Richardson-McDaniel, Staff Member for U. S. Senator Martin Heinrich (D-NM)

    SciTech Connect

    Barnes, Cris William

    2015-02-24

    At the request of Katherine Richardson-McDaniel, Staff Member to U.S. Senator Martin Heinrich (D-NM), a high-level briefing was requested about MaRIE 1.0, the Matter-Radiation Interactions in Extremes effort at Los Alamos National Laboratory. What it would be, the mission need motivation, the scientific challenge, and the current favorable impact on both programs and people are shown in viewgraph form.

  18. Determining the extent and characterizing coral reef habitats of the northern latitudes of the Florida Reef Tract (Martin County).

    PubMed

    Walker, Brian K; Gilliam, David S

    2013-01-01

    Climate change has recently been implicated in poleward shifts of many tropical species including corals; thus attention focused on higher-latitude coral communities is warranted to investigate possible range expansions and ecosystem shifts due to global warming. As the northern extension of the Florida Reef Tract (FRT), the third-largest barrier reef ecosystem in the world, southeast Florida (25-27° N latitude) is a prime region to study such effects. Most of the shallow-water FRT benthic habitats have been mapped, however minimal data and limited knowledge exist about the coral reef communities of its northernmost reaches off Martin County. First benthic habitat mapping was conducted using newly acquired high resolution LIDAR bathymetry and aerial photography where possible to map the spatial extent of coral reef habitats. Quantitative data were collected to characterize benthic cover and stony coral demographics and a comprehensive accuracy assessment was performed. The data were then analyzed in a habitat biogeography context to determine if a new coral reef ecosystem region designation was warranted. Of the 374 km(2) seafloor mapped, 95.2% was Sand, 4.1% was Coral Reef and Colonized Pavement, and 0.7% was Other Delineations. Map accuracy assessment yielded an overall accuracy of 94.9% once adjusted for known map marginal proportions. Cluster analysis of cross-shelf habitat type and widths indicated that the benthic habitats were different than those further south and warranted designation of a new coral reef ecosystem region. Unlike the FRT further south, coral communities were dominated by cold-water tolerant species and LIDAR morphology indicated no evidence of historic reef growth during warmer climates. Present-day hydrographic conditions may be inhibiting poleward expansion of coral communities along Florida. This study provides new information on the benthic community composition of the northern FRT, serving as a baseline for future community shift and

  19. Determining the Extent and Characterizing Coral Reef Habitats of the Northern Latitudes of the Florida Reef Tract (Martin County)

    PubMed Central

    Walker, Brian K.; Gilliam, David S.

    2013-01-01

    Climate change has recently been implicated in poleward shifts of many tropical species including corals; thus attention focused on higher-latitude coral communities is warranted to investigate possible range expansions and ecosystem shifts due to global warming. As the northern extension of the Florida Reef Tract (FRT), the third-largest barrier reef ecosystem in the world, southeast Florida (25–27° N latitude) is a prime region to study such effects. Most of the shallow-water FRT benthic habitats have been mapped, however minimal data and limited knowledge exist about the coral reef communities of its northernmost reaches off Martin County. First benthic habitat mapping was conducted using newly acquired high resolution LIDAR bathymetry and aerial photography where possible to map the spatial extent of coral reef habitats. Quantitative data were collected to characterize benthic cover and stony coral demographics and a comprehensive accuracy assessment was performed. The data were then analyzed in a habitat biogeography context to determine if a new coral reef ecosystem region designation was warranted. Of the 374 km2 seafloor mapped, 95.2% was Sand, 4.1% was Coral Reef and Colonized Pavement, and 0.7% was Other Delineations. Map accuracy assessment yielded an overall accuracy of 94.9% once adjusted for known map marginal proportions. Cluster analysis of cross-shelf habitat type and widths indicated that the benthic habitats were different than those further south and warranted designation of a new coral reef ecosystem region. Unlike the FRT further south, coral communities were dominated by cold-water tolerant species and LIDAR morphology indicated no evidence of historic reef growth during warmer climates. Present-day hydrographic conditions may be inhibiting poleward expansion of coral communities along Florida. This study provides new information on the benthic community composition of the northern FRT, serving as a baseline for future community shift and

  20. Monitoring of the temperature - moisture regime of critical parts in the tower of the St. Martin Cathedral in Bratislava.

    NASA Astrophysics Data System (ADS)

    Kubicar, L.; Fidríková, D.; Štofanik, V.; Vretenár, V.

    2012-04-01

    Historic monuments are subject to degradation due to exposition to surrounding meteorological conditions and groundwater. Degradation is most often manifested by deterioration of plaster, walls structure and building elements like stones. A significant attention measures are undertaken to prevent degradation of the cultural heritage throughout the world. Our contribution is to monitor the objects for recognition of the critical state when it is necessary to make adjustments to avoid destruction. Buildings consisting from the listed elements belong to porous materials. Moisture diffusion, condensation, etc. attack structure stability of the buildings. Then the moisture diffusion and effects like drying, freezing / thawing belong to the control mechanisms of the degradation. In addition to laboratory experiments concerning the mentioned effects, we simultaneously studied processes by monitoring of the cultural monuments. During monitoring we have identified diffusion of moisture associated with cycle day / night and cycle moisture /drying caused by meteorological precipitation. Long term monitoring is performed in the tower of St. Martin Cathedral in Bratislava under the window sill of the belfry in exterior at three orientations, the north, south and the west. Monitoring is carried out in plaster and in masonry about 10 cm from the wall surface. The thermal conductivity sensors are used for monitoring that operate on the principle of the hot ball method. Then thermal conductivity of porous material is a function of pore content. The sensor has shape of a ball in diameter up to 2 mm in which a heat source as well as a thermometer is integrated into one component. A small heat output is delivered into the surrounding material. The temperature response of the sensor gives information on the thermal conductivity. For use in the preservation of cultural heritage a number of measuring devices have been developed for automatic registration of temperature and moisture in

  1. Horizontal Devonian shale well, Columbia Natural Resources, Inc. 's, Pocohontas Development Corp. Well 21747, Martin County, Kentucky

    SciTech Connect

    Koziar, G.; Ahmad, M.M.; Friend, L.L.; Friend, M.L.; Rothman, E.M.; Stollar, R.L. )

    1991-05-01

    Columbia Gas and the United States Department of Energy (DOE) have successfully completed field work on a horizontally drilled Devonian shale well located in Martin County, Kentucky. The objective of this cofunded project is to assess the effectiveness and economic feasibility of applying horizontal drilling and hydraulically fracturing stimulation techniques to enhance the extraction of natural gas from the Devonian shale. The well is comprised of three segments: a conventional vertical section, an angle build section and a horizontal section. The well reached a measured depth (MD) of 6263 feet, 3810 feet true vertical depth (TVD), with a horizontal displacement of 2812 feet achieved in the desired direction of N10{degrees}W. Both air and foam were used as drilling fluids. The vertical, lateral and tangent sections were drilled using conventional rotary drilling methods. Downhole motors were used to build angle. A total combined final open flow of 3.1 MMcfd was measured from all zones. Total well expenditures are approximately $1,460,000. Of this amount, $700,000 is directly related to the research and learning curve experience aspects. It is projected that the same horizontal well could be drilled with existing technology for $700,000. If advanced can be made in MWD systems for air drilling environments, wells of this type could be drilled routinely for $500,000. It appears that application of horizontal drilling will result in at least acceleration of gas production and possibly the addition of recoverable reserves from the Devonian shale. Production data, necessary to validate this statement, are also required to determine the economics. As we gain experience and technology advances, cost reductions will occur; this will result in economic improvement.

  2. Horizontal Devonian shale well, Columbia Natural Resources, Inc.`s, Pocohontas Development Corp. Well 21747, Martin County, Kentucky. Final report

    SciTech Connect

    Koziar, G.; Ahmad, M.M.; Friend, L.L.; Friend, M.L.; Rothman, E.M.; Stollar, R.L.

    1991-05-01

    Columbia Gas and the United States Department of Energy (DOE) have successfully completed field work on a horizontally drilled Devonian shale well located in Martin County, Kentucky. The objective of this cofunded project is to assess the effectiveness and economic feasibility of applying horizontal drilling and hydraulically fracturing stimulation techniques to enhance the extraction of natural gas from the Devonian shale. The well is comprised of three segments: a conventional vertical section, an angle build section and a horizontal section. The well reached a measured depth (MD) of 6263 feet, 3810 feet true vertical depth (TVD), with a horizontal displacement of 2812 feet achieved in the desired direction of N10{degrees}W. Both air and foam were used as drilling fluids. The vertical, lateral and tangent sections were drilled using conventional rotary drilling methods. Downhole motors were used to build angle. A total combined final open flow of 3.1 MMcfd was measured from all zones. Total well expenditures are approximately $1,460,000. Of this amount, $700,000 is directly related to the research and learning curve experience aspects. It is projected that the same horizontal well could be drilled with existing technology for $700,000. If advanced can be made in MWD systems for air drilling environments, wells of this type could be drilled routinely for $500,000. It appears that application of horizontal drilling will result in at least acceleration of gas production and possibly the addition of recoverable reserves from the Devonian shale. Production data, necessary to validate this statement, are also required to determine the economics. As we gain experience and technology advances, cost reductions will occur; this will result in economic improvement.

  3. Influence of water temperature on rainbow smelt spawning and early life history dynamics in St. Martin Bay, Lake Huron

    USGS Publications Warehouse

    O'Brien, Timothy P.; Taylor, William W.; Briggs, Andrew S.; Roseman, Edward F.

    2012-01-01

    Rainbow smelt are an important prey species for native and introduced salmonines in the Great Lakes. In Lake Huron, rainbow smelt populations are characterized by variable recruitment and year-class strength. To understand the influence of water temperature on reproduction, growth, and survival during larval-fish stages, we sampled spawning tributaries and larval-fish habitats during 2008 and 2009 in St. Martin Bay, Lake Huron. Spawning by rainbow smelt occurred primarily when stream temperatures were between 3 and 10 °C, which resulted in a 7–10-day spawning period during 2008, and a 15–20-day spawning period during 2009. Regardless of these differences in spawning temperatures and duration, peak larval-fish densities during 2008 were double those observed during 2009. Length–frequency analysis of larval-fish populations during both years revealed stream-hatched fish during May and a later emergence of larval rainbow smelt during summer, presumably originating from lake spawning. Warmer bay water temperatures led to earlier emergence of lake-spawned rainbow smelt larvae during 2009. Stream-hatched fish larvae experienced large-scale mortality during May 2008 resulting in a bay population consisting primarily of lake-spawned rainbow smelt larvae, but during 2009 both stream- and lake-hatched cohorts experienced higher survival concomitant with significantly higher mean population growth rates. Higher larval-fish growth rates during 2009 appeared to be density-dependent and facilitated by warmer water temperatures during late June and cooler water temperatures during July. Temperature-mediated differences in annual growth rates and irregular contributions from stream- and lake-hatched fish larvae are important factors affecting survival and abundance of young-of-the-year rainbow smelt in Lake Huron.

  4. In re Martin.

    PubMed

    1995-08-22

    The Supreme Court of Michigan held that the testimony and affidavit of the wife of an incompetent but conscious patient did not constitute clear and convincing evidence of the patient's pre-injury decision to decline life-sustaining medical treatment. A subjective analysis is applied which allows treatment to be withheld if it is clear that the particular patient would have refused treatment under the circumstances involved. The court reasoned that prior statements by the patient to the effect that he would not want to receive life-sustaining treatment if he was in a serious accident, had disabling or terminal illness, or was dying of old age, and that he did not want to live "like a vegetable," did not rise to the clear and convincing level of evidence. Rather, only when a patient's prior statements clearly illustrate a serious, well thought out, consistent decision to refuse treatment under exact or highly similar circumstances as those present, should medical treatment be withheld.

  5. [Jean-martin charcot].

    PubMed

    Sakuta, Manabu

    2014-11-01

    Charcot created a system for the classification and diagnosis of neurological patients in the 1850s. His methodology consisted of listening to a patient's family history and present history, observing the patient scrupulously, and confirming lesions by autopsy once the patient was dead. He compared two different diseases in order to make their differences clear. Once he understood the fundamental form of a disease, he proceeded to study less perfect forms that had a single symptom. By this process, Charcot developed many new symptomatologies in Neurology.

  6. Development and characterization of Powder Metallurgy (PM) 2XXX series Al alloy products and Metal Matrix Composite (MMC) 2XXX Al/SiC materials for high temperature aircraft structural applications

    NASA Technical Reports Server (NTRS)

    Chellman, D. J.; Gurganus, T. B.; Walker, J. A.

    1992-01-01

    The results of a series of material studies performed by the Lockheed Aeronautical Systems Company over the time period from 1980 to 1991 are discussed. The technical objective of these evaluations was to develop and characterize advanced aluminum alloy materials with temperature capabilities extending to 350 F. An overview is given of the first five alloy development efforts under this contract. Prior work conducted during the first five modifications of the alloy development program are listed. Recent developments based on the addition of high Zr levels to an optimum Al-Cu-Mg alloy composition by powder metallurgy processing are discussed. Both reinforced and SiC or B4C ceramic reinforced alloys were explored to achieve specific target goals for high temperature aluminum alloy applications.

  7. 75 FR 76733 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-09

    ... Capital Fund IV, L.P. G Lockheed Martin Corporation. G Lockheed Martin Corporation. 20110094 G LS Power Equity Partners II, L.P. G PPL Corporation. G Newco, LLC. G Safe Harbor Water Power Corporation. G PPL... Safe Harbor Water Power Corporation. 4-NOV-10 20110056 G Koninklijke Philips Electronics N.y. G...

  8. [Environmental factors in ALS].

    PubMed

    Juntas-Morales, Raul; Pageot, Nicolas; Corcia, Philippe; Camu, William

    2014-05-01

    ALS is likely to be a disorder of multifactorial origin. Among all the factors that may increase the risk of ALS, environmental ones are being studied for many years, but in the recent years, several advances have pointed to a new interest in their potential involvement in the disease process, especially for the cyanotoxin BMAA. Food containing BMAA has been found on Guam, a well-known focus of ALS/parkinsonism/dementia and high levels of BMAA have been identified into the brain of these patients. The BMAA cyanotoxin is potentially ubiquitous and have also been found into the food of patients who died from ALS both in Europe and USA. BMAA can be wrongly integrated into the protein structure during mRNA traduction, competing with serine. This may induce abnormal protein folding and a subsequent cell death. Heavy metals, such as lead or mercury may be directly toxic for neuronal cells. Several works have suggested an increased risk of ALS in individuals chronically exposed to these metals. Exposure to pesticides has been suggested to be linked to an increased risk of developing ALS. The mechanism of their toxicity is likely to be mediated by paraoxonases. These proteins are in charge of detoxifying the organism from toxins, and particularly organophosphates. To date, there are insufficient scientific data to suggest that exposure to electromagnetic fields may increase the risk of having ALS. We are particularly missing longitudinal cohorts to demonstrate that risk.

  9. Jean Martin Charcot (1825-93) and John Hughlings Jackson (1835-1911): neurology in France and England in the 19th century.

    PubMed

    Silvester, Alexander

    2009-11-01

    In 1862 Jean Martin Charcot was appointed Physician at the Salpêtrière Hospital in Paris, and simultaneously John Hughlings Jackson was appointed as assistant physician at the National Hospital for the Paralysed and Epileptic, Queen Square, London. Both men made significant contributions to the development of neurology, many of which remain important to contemporary neurologists. The achievements and the work of Charcot and Hughlings Jackson are considered in the light of their respective localities and medical education, and the structure of hospital institutions and political allegiances are compared in the late 19th century in France and Britain.

  10. Amyotrophic Lateral Sclerosis (ALS)

    MedlinePlus

    ... Pictures of ALS Mutant Proteins Support Two Major Theories About How the Disease is Caused May 2003 ... All NINDS-prepared information is in the public domain and may be freely copied. Credit to the ...

  11. Genetic Testing for ALS

    MedlinePlus

    ... Involved Donate Familial Amyotrophic Lateral Sclerosis (FALS) and Genetic Testing By Deborah Hartzfeld, MS, CGC, Certified Genetic ... guarantee a person will develop symptoms of ALS. Genetic Counseling If there is more than one person ...

  12. All About ALS

    MedlinePlus

    ... External link, please review our exit disclaimer . Subscribe All About ALS Understanding a Devastating Disorder In the ... a coffee pot, or button a shirt. Eventually, all muscles under voluntary control are affected, and people ...

  13. What Is ALS?

    MedlinePlus

    ... scarring or hardening ("sclerosis") in the region. Motor neurons reach from the brain to the spinal cord ... the body. The progressive degeneration of the motor neurons in ALS eventually leads to their demise. When ...

  14. Extensive genetics of ALS

    PubMed Central

    Calvo, Andrea; Mazzini, Letizia; Cantello, Roberto; Mora, Gabriele; Moglia, Cristina; Corrado, Lucia; D'Alfonso, Sandra; Majounie, Elisa; Renton, Alan; Pisano, Fabrizio; Ossola, Irene; Brunetti, Maura; Traynor, Bryan J.; Restagno, Gabriella

    2012-01-01

    Objective: To assess the frequency and clinical characteristics of patients with mutations of major amyotrophic lateral sclerosis (ALS) genes in a prospectively ascertained, population-based epidemiologic series of cases. Methods: The study population includes all ALS cases diagnosed in Piemonte, Italy, from January 2007 to June 2011. Mutations of SOD1, TARDBP, ANG, FUS, OPTN, and C9ORF72 have been assessed. Results: Out of the 475 patients included in the study, 51 (10.7%) carried a mutation of an ALS-related gene (C9ORF72, 32; SOD1, 10; TARDBP, 7; FUS, 1; OPTN, 1; ANG, none). A positive family history for ALS or frontotemporal dementia (FTD) was found in 46 (9.7%) patients. Thirty-one (67.4%) of the 46 familial cases and 20 (4.7%) of the 429 sporadic cases had a genetic mutation. According to logistic regression modeling, besides a positive family history for ALS or FTD, the chance to carry a genetic mutation was related to the presence of comorbid FTD (odds ratio 3.5; p = 0.001), and age at onset ≤54 years (odds ratio 1.79; p = 0.012). Conclusions: We have found that ∼11% of patients with ALS carry a genetic mutation, with C9ORF72 being the commonest genetic alteration. Comorbid FTD or a young age at onset are strong indicators of a possible genetic origin of the disease. PMID:23100398

  15. A modern twist on the beaumont and st. Martin case: encouraging analysis and discussion in the bioethics classroom with reflective writing and concept mapping.

    PubMed

    Goller, Carlos C

    2014-12-01

    Historical ethical dilemmas are a valuable tool in bioethics courses. However, garnering student interest in reading and discussing the assigned cases in the classroom can be challenging. In an effort to actively engage undergraduate and graduate students in an Ethical Issues in Biotechnology course, an activity was developed to encourage reflection on a classical ethical dilemma between a patient, St. Martin, and his employer/caretaker, Beaumont. Two different texts were used to analyze the ethical ramifications of this relationship: a chapter in a popular press book and a short perspective in a medical journal. Participants read the book chapter for homework and discussed it in class. This easy read highlights the fundamental ethical issues in the relationship between two men. Students were then provided with a second text focusing on the scientific accomplishments achieved through Beaumont's experimentation on St. Martin. A structured worksheet prompted participants to reflect on their feelings after reading each text and create a concept map depicting the dilemma. Student-generated concept maps and written reflections indicate participants were able to list the ethical issues, analyze the situation, and evaluate the information provided. This activity not only encouraged higher-level thinking and reflection, it also mirrored the course's structured approach of using concept mapping and reflection to dissect ethical dilemmas. PMID:25574285

  16. Geomorphic effects of the earthquake of March 27, 1964, in the Martin-Bering Rivers area, Alaska: Chapter B in The Alaska earthquake, March 27, 1964: regional effects

    USGS Publications Warehouse

    Tuthill, Samuel J.; Laird, Wilson M.

    1966-01-01

    The Alaska earthquake of March 27, 1964, caused widespread geomorphic changes in the Martin-Bering Rivers area-900 square miles of uninhabited mountains, alluvial flatlands, and marshes north of the Gulf of Alaska, and east of the Copper River. This area is at lat 60°30’ N. and long 144°22’ W., 32 miles east of Cordova, and approximately 130 miles east-southeast of the epicenter of the earthquake. The geomorphic effects observed were: (1) earthquake-induced ground fractures, (2) mudvent deposits, (3) “earthquake-fountain” craters, (4) subsidence, (5) mudcones, (6) avalanches, (7) subaqueous landslides, (8) turbidity changes in ice-basined lakes on the Martin River glacier, (9) filling of ice-walled sinkholes, (10) gravel-coated snow cones, (11) lake ice fractures, and (12) uplift accompanied the earthquake. In addition to geomorphic effects, the earthquake affected the animal populations of the area. These include migratory fish, terrestrial mollusks, fur-bearing animals, and man. The Alaska earthquake clearly delineated areas of alluvial fill, snow and rock avalanche corridors, and deltas of the deeper lakes as unsuitable for future construction.

  17. Using the Science of Psychology to Target Perpetrators of Racism and Race-Based Discrimination For Intervention Efforts: Preventing Another Trayvon Martin Tragedy.

    PubMed

    Mays, Vickie M; Johnson, Denise; Coles, Courtney N; Gellene, Denise; Cochran, Susan D

    2013-03-22

    Psychological science offers a variety of methods to both understand and intervene when acts of potential racial or ethnic racism, bias or prejudice occur. The Trayvon Martin killing is a reminder of how vulnerable African American men and boys, especially young African American men, are to becoming victims of social inequities in our society. We examine several historical events of racial bias (the Los Angeles civil disturbance after the Rodney King verdict, the federal government's launch of a "War on Drugs" and the killing of Trayvon Martin) to illustrate the ways in which behaviors of racism and race-based discrimination can be viewed from a psychological science lens in the hopes of eliminating and preventing these behaviors. If society is to help end the genocide of African American men and boys then we must broaden our focus from simply understanding instances of victimization to a larger concern with determining how policies, laws, and societal norms serve as the foundation for maintaining implicit biases that are at the root of race-based discrimination, prejudice, bias and inequity. In our call to action, we highlight the contributions that psychologists, particularly racial and ethnic minority professionals, can make to reduce the negative impact of racial and ethnic bias through their volunteer/pro bono clinical efforts.

  18. Erosion monitoring along the Coosa River below Logan Martin Dam near Vincent, Alabama, using terrestrial light detection and ranging (T-LiDAR) technology

    USGS Publications Warehouse

    Kimbrow, Dustin R.; Lee, Kathryn G.

    2013-01-01

    Alabama Power operates a series of dams on the Coosa River in east central Alabama. These dams form six reservoirs that provide power generation, flood control, recreation, economic opportunity, and fish and wildlife habitats to the region. The Logan Martin Reservoir is located approximately 45 kilometers east of Birmingham and borders Saint Clair and Talladega Counties. Discharges below the reservoir are controlled by power generation at Logan Martin Dam, and there has been an ongoing concern about the stability of the streambanks downstream of the dam. The U.S. Geological Survey, in cooperation with Alabama Power conducted a scientific investigation of the geomorphic conditions of a 115-meter length of streambank along the Coosa River by using tripod-mounted terrestrial light detection and ranging technology. Two surveys were conducted before and after the winter flood season of 2010 to determine the extent and magnitude of geomorphic change. A comparison of the terrestrial light detection and ranging datasets indicated that approximately 40 cubic meters of material had been eroded from the upstream section of the study area. The terrestrial light detection and ranging data included in this report consist of electronic point cloud files containing several million georeferenced data points, as well as a surface model measuring changes between scans.

  19. Using the Science of Psychology to Target Perpetrators of Racism and Race-Based Discrimination For Intervention Efforts: Preventing Another Trayvon Martin Tragedy

    PubMed Central

    Mays, Vickie M.; Johnson, Denise; Coles, Courtney N.; Gellene, Denise; Cochran, Susan D.

    2013-01-01

    Psychological science offers a variety of methods to both understand and intervene when acts of potential racial or ethnic racism, bias or prejudice occur. The Trayvon Martin killing is a reminder of how vulnerable African American men and boys, especially young African American men, are to becoming victims of social inequities in our society. We examine several historical events of racial bias (the Los Angeles civil disturbance after the Rodney King verdict, the federal government’s launch of a “War on Drugs” and the killing of Trayvon Martin) to illustrate the ways in which behaviors of racism and race-based discrimination can be viewed from a psychological science lens in the hopes of eliminating and preventing these behaviors. If society is to help end the genocide of African American men and boys then we must broaden our focus from simply understanding instances of victimization to a larger concern with determining how policies, laws, and societal norms serve as the foundation for maintaining implicit biases that are at the root of race-based discrimination, prejudice, bias and inequity. In our call to action, we highlight the contributions that psychologists, particularly racial and ethnic minority professionals, can make to reduce the negative impact of racial and ethnic bias through their volunteer/pro bono clinical efforts. PMID:23885310

  20. A modern twist on the beaumont and st. Martin case: encouraging analysis and discussion in the bioethics classroom with reflective writing and concept mapping.

    PubMed

    Goller, Carlos C

    2014-12-01

    Historical ethical dilemmas are a valuable tool in bioethics courses. However, garnering student interest in reading and discussing the assigned cases in the classroom can be challenging. In an effort to actively engage undergraduate and graduate students in an Ethical Issues in Biotechnology course, an activity was developed to encourage reflection on a classical ethical dilemma between a patient, St. Martin, and his employer/caretaker, Beaumont. Two different texts were used to analyze the ethical ramifications of this relationship: a chapter in a popular press book and a short perspective in a medical journal. Participants read the book chapter for homework and discussed it in class. This easy read highlights the fundamental ethical issues in the relationship between two men. Students were then provided with a second text focusing on the scientific accomplishments achieved through Beaumont's experimentation on St. Martin. A structured worksheet prompted participants to reflect on their feelings after reading each text and create a concept map depicting the dilemma. Student-generated concept maps and written reflections indicate participants were able to list the ethical issues, analyze the situation, and evaluate the information provided. This activity not only encouraged higher-level thinking and reflection, it also mirrored the course's structured approach of using concept mapping and reflection to dissect ethical dilemmas.

  1. ALS superbend magnet system

    SciTech Connect

    Zbasnik, J.; Wang, S.T.; Chen, J.Y.; DeVries, G.J.; DeMarco, R.; Fahmie, M.; Geyer, A.; Green, M.A.; Harkins, J.; Henderson, T.; Hinkson, J.; Hoyer, E.H.; Krupnick, J.; Marks, S.; Ottens, F.; Paterson, J.A.; Pipersky, P.; Portmann, G.; Robin, D.A.; Schlueter, R.D.; Steier, C.; Taylor, C.E.; Wahrer, R.

    2000-09-15

    The Lawrence Berkeley National Laboratory is preparing to upgrade the Advanced Light Source (ALS) with three superconducting dipoles (Superbends). In this paper we present the final magnet system design which incorporates R&D test results and addresses the ALS operational concerns of alignment, availability, and economy. The design incorporates conduction-cooled Nb-Ti windings and HTS current leads, epoxy-glass suspension straps, and a Gifford-McMahon cryocooler to supply steady state refrigeration. We also present the current status of fabrication and testing.

  2. Modulus measurements in ordered Co-Al, Fe-Al, and Ni-Al alloys

    NASA Technical Reports Server (NTRS)

    Harmouche, M. R.; Wolfenden, A.

    1985-01-01

    The composition and/or temperature dependence of the dynamic Young's modulus for the ordered B2 Co-Al, Fe-Al, and Ni-Al aluminides has been investigated using the piezoelectric ultrasonic composite oscillator technique (PUCOT). The modulus has been measured in the composition interval 48.49 to 52.58 at. pct Co, 50.87 to 60.2 at. pct Fe, and 49.22 to 55.95 at. pct Ni for Co-Al, Fe-Al, and Ni-Al, respectively. The measured values for Co-Al are in the temperature interval 300 to 1300 K, while those for the other systems are for ambient temperature only. The data points show that Co-Al is stiffer than Fe-Al, which is stiffer than Ni-Al. The data points for Fe-Al and Ni-Al are slightly higher than those reported in the literature.

  3. Am I the Fifth Horseman of the Apocalypse? Comment on Galassi, Crace, Martin, James, and Wallace (1992) and Comments on Research Concerning Expectations about Counseling.

    ERIC Educational Resources Information Center

    Tinsley, Howard E. A.

    1992-01-01

    Responds to previous article by Galassi et al. on client anticipations and preferences regarding career counseling. Shows Galassi et al.'s criticisms of Tinsley and Benton and the Expectations about Counseling instrument to be unfounded, discusses problems with terminology, and analyzes technical adequacy and findings of Galassi et al. Also…

  4. Al Shanker Remembers.

    ERIC Educational Resources Information Center

    American Educator, 2000

    2000-01-01

    In a 1996 interview shortly before his death, Al Shanker, longtime president of the American Federation of Teachers, discussed such topics as: his own educational experiences; how he learned about political fighting in the Boy Scouts; the appeal of socialism; multinational corporations and the nation state; teaching tough students; and John Dewey…

  5. Fosetyl-al

    Integrated Risk Information System (IRIS)

    Fosetyl - al ; CASRN 39148 - 24 - 8 Human health assessment information on a chemical substance is included in the IRIS database only after a comprehensive review of toxicity data , as outlined in the IRIS assessment development process . Sections I ( Health Hazard Assessments for Noncarcinogenic Ef

  6. ALS renewal moves forward

    NASA Astrophysics Data System (ADS)

    Falcone, R. W.; Feinberg, B.; Hussain, Z.; Kirz, J.; Krebs, G. F.; Padmore, H. A.; Robin, D. S.; Robinson, A. L.

    2007-11-01

    As the result of an extensive long-term planning process involving all its stakeholders—management, staff, and users—the ALS has seen its future and is aggressively moving ahead to implement its vision for keeping the facility at the cutting edge for the next 2-3 decades. The evolving strategic plan now in place aims to renew the ALS so it can address a new generation of fundamental questions about size dependent and dimensional-confinement phenomena at the nanoscale; correlation and complexity in physical, biological, and environmental systems; and temporal evolution, assembly, dynamics and ultrafast phenomena. The renewal spans three areas: (1) increased staffing at beamlines to support the growing user community and safety professionals to keep an increasingly complex facility hazard free; (2) implementing advances in accelerator, insertion device, beamline, and detector technology that will make it possible for ALS users to address emerging grand scientific and technological challenges with incisive world-class tools; and (3) construction of a user support building and guest housing that will increase the safety and user friendliness of the ALS by providing users office, meeting, experiment staging, and laboratory space for their work and on-site accommodations at reasonable rates.

  7. [The "utopian" national socialism - a mutual dispute in the philosophy of Martin Heidegger and Carl Friedrich von Weizsäcker?].

    PubMed

    Schäfer, Wolf

    2014-01-01

    In a letter to his wife from October 14, 1943, Werner Heisenberg describes a fierce clash with Carl Friedrich von Weizsäcker. The sudden conflict raises numerous questions, two of which are tackled here. First: How is now the friendly relationship between Heisenberg and Weizsäcker in the postwar years to be understood? The answer is: as a strategic performance. Second: How are the radical opinions to be explained that Weizsäcker expressed at the time? A thorough reconstruction of the lifelong connection that Weizsäcker maintained with Martin Heidegger and Heidegger's philosophy gives the answer: the young Weizsäcker was fired up by the "utopian" National Socialism with which Heidegger trumped the real existing. PMID:24974620

  8. Health-hazard evaluation report HETA 84-117-1696, Martin Marietta Michoud Operations, New Orleans, Louisiana. [Diphenylmethane-diisocyanate and solvents

    SciTech Connect

    McConnell, R.S.; Markel, H.L.

    1986-05-01

    Workers at the Martin Marietta Michoud Operations Facility, New Orleans, Louisiana requested an evaluation of asthma and liver function test abnormalities among workers in the Thermal Protection System (TPS) insulation areas with potential exposures to diphenylmethane-diisocyanate (MDI) and solvents. Three cases of probable MDI-induced asthma were identified. There was no detectable group decline in one second forced expiratory volume associated with MDI exposure. In general, environmental levels of MDI in company records were below 25ppm. Respiratory protection was worn by operators and sprayers where MDI was present. In the final assembly area, 9 of 103 workers had abnormal serum liver enzyme concentrations. The authors conclude that it is probable that some employees developed asthma as a result of exposure to MDI. Recommendations were given.

  9. [The "utopian" national socialism - a mutual dispute in the philosophy of Martin Heidegger and Carl Friedrich von Weizsäcker?].

    PubMed

    Schäfer, Wolf

    2014-01-01

    In a letter to his wife from October 14, 1943, Werner Heisenberg describes a fierce clash with Carl Friedrich von Weizsäcker. The sudden conflict raises numerous questions, two of which are tackled here. First: How is now the friendly relationship between Heisenberg and Weizsäcker in the postwar years to be understood? The answer is: as a strategic performance. Second: How are the radical opinions to be explained that Weizsäcker expressed at the time? A thorough reconstruction of the lifelong connection that Weizsäcker maintained with Martin Heidegger and Heidegger's philosophy gives the answer: the young Weizsäcker was fired up by the "utopian" National Socialism with which Heidegger trumped the real existing.

  10. Ausbildung als zentrale Aufgabe

    NASA Astrophysics Data System (ADS)

    Krämer, Walter; Schmerbach, Sibylle

    Anders als Lesen und Schreiben zählen Grundkenntnisse in Statistik heute noch nicht zu den Voraussetzungen einer sinnvollen Teilhabe am Sozialgeschehen. Und auch in der akademischen Statistik-Ausbildung gibt es noch einiges zu tun. Das vorliegende Kapitel zeichnet die Geschichte dieser akademischen Ausbildung an deutschen Universitäten nach dem zweiten Weltkrieg nach, stellt aktuelle Defizite vor und weist auf mögliche Verbesserungen hin.

  11. A Brief Investigation of the Hydrodynamic Characteristics of a 1/13.33-Scale Powered Dynamic Model of a Preliminary Design of the Martin XP6M-1 Flying Boat, TED No. NACA DE-385

    NASA Technical Reports Server (NTRS)

    Blanchard, Ulysse J.

    1953-01-01

    The hydrodynamic characteristics of a preliminary design of the Martin XP6M-1 flying boat have been determined. Longitudinal stability during take-off and landing, resistance of the complete model, and behavior during taxiing and landing in rough water are presented.

  12. Sedimentary Record of Paleodeformation of the Saint Martin Anticline Reveals the Interaction Between Tectonics, Sedimentation Processes and Relative Sea-level Changes: Ganges-Brahmaputra Delta Burma Arc Collision, SE Bangladesh

    NASA Astrophysics Data System (ADS)

    Bastas-Hernandez, A.; McHugh, C. M.; Mondal, D. R.; Seeber, L.; Steckler, M. S.; Gurung, D.; Mustaque, S.; Marsh, J.; Akhter, S. H.

    2014-12-01

    Along the Ganges-Brahmaputra Delta Burma Arc collision zone, the Indian plate is converging obliquely with the Burma arc with a shortening GPS rate of 14 mm/yr. In this region tectonics, huge sediment supply from the erosion of the Himalayas (>1 GT/yr) and relative sea level changes interact. The extremely thick sediments of the Ganges-Brahmaputra Delta and Fan (~20 km) are being gradually accreted into a very wide thrust-fold belt along this subduction/collision zone. This interaction has led to the formation of a fold-and-thrust belt and wide accretionary prism that is exposed on land and on the shelf of the Burma forearc. Sedimentary sequence and structure document the seismo-tectonic and sedimentary evolution of St Martin's Island, which is an expression of an anticline in the outer part of the accretion forearc. During late Pleistocene sea-level low stands, the anticline and most of the rest of the shelf were exposed. The anticline ridge could then grow, receiving little erosion by local drainages. At some point during sea level rise, the coast advanced over the ridge and bevelled it. Then sea-level continued to rise and new sediment deposited forming an angular unconformity. A low-relief unconformity, in fact, separates the folded strata below from overlying strata of Holocene age. Where now exposed on the island above sea level, the unconformity is ~8000 y old. At that time, sea level was 30 m below the current level and thus rapid tectonic uplift is necessary to account for its current elevation. Dead coral heads of the species Porities that populate the coast were dated with U-Th (Mondal et al., 2013). They document a megathurst rupture and ~ 2m uplift that occurred during the Great Arakan earthquake in 1762 and further earthquakes are likely at ~ 1100 and 800 AD. Studies of the 1762 rupture suggest that the anticline rises during megathrust earthquakes (~2m) and subsides in the interseismic period (a few mm/yr; Steckler and Mondal 2014). Radiocarbon ages

  13. AL Amyloidosis and Agent Orange

    MedlinePlus

    ... for survivors' benefits . Research on AL amyloidosis and herbicides The Health and Medicine Division (formally known as ... to the compounds of interest found in the herbicide Agent Orange and AL amyloidosis." VA made a ...

  14. Modeling neuronal vulnerability in ALS.

    PubMed

    Roselli, Francesco; Caroni, Pico

    2014-08-20

    Using computational models of motor neuron ion fluxes, firing properties, and energy requirements, Le Masson et al. (2014) reveal how local imbalances in energy homeostasis may self-amplify and contribute to neurodegeneration in ALS.

  15. Al Jazirah, Sudan

    NASA Technical Reports Server (NTRS)

    2008-01-01

    Al Jazirah (also Gezira) is one of the 26 states of Sudan. The state lies between the Blue Nile and the White Nile in the east-central region of the country. It is a well populated area suitable for agriculture. The area was at the southern end of Nubia and little is known about its ancient history and only limited archaeological work has been conducted in this area. The region has benefited from the Gezira Scheme, a program to foster cotton farming begun in 1925. At that time the Sennar Dam and numerous irrigation canals were built. Al Jazirah became the Sudan's major agricultural region with more than 2.5 million acres (10,000 km) under cultivation. The initial development project was semi-private, but the government nationalized it in 1950. Cotton production increased in the 1970s but by the 1990s increased wheat production has supplanted a third of the land formerly seeded with cotton.

    The image was acquired December 25, 2006, covers an area of 56 x 36.4 km, and is located near 14.5 degrees north latitude, 33.1 degrees east longitude.

    The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

  16. Testing of the X-33 umbilical system at KSC

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At the Launch Equipment Test Facility, Mike Solomon, with Lockheed Martin Technical Operations, studies a part of the X-33 umbilical system during testing. Pointing to the part is Will Reaves, also with Lockheed Martin Technical Operations. A team of Kennedy Space Center experts developed the umbilical system, comprising panels, valves and hoses that provide the means to load the X-33 with super-cold propellant. The X-33, under construction at Lockheed Martin Skunk Works in Palmdale, Calif., is a half-scale prototype of the planned operational reusable launch vehicle dubbed VentureStar.

  17. Testing of the X-33 umbilical system at KSC

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At the Launch Equipment Test Facility, workers check results from testing the X-33 umbilical system. From left are Greg Melton (left), a NASA engineer; Will Reaves, with Lockheed Martin Technical Operations; and Scott Holcomb, also with Lockheed Martin Technical Operations. A team of Kennedy Space Center experts developed the umbilical system, comprising panels, valves and hoses that provide the means to load the X-33 with super-cold propellant. The X-33, under construction at Lockheed Martin Skunk Works in Palmdale, Calif., is a half-scale prototype of the planned operational reusable launch vehicle dubbed VentureStar.

  18. Linking network topology to function. Comment on "Drivers of structural features in gene regulatory networks: From biophysical constraints to biological function" by O.C. Martin, A. Krzywicki and M. Zagorski

    NASA Astrophysics Data System (ADS)

    di Bernardo, Diego

    2016-07-01

    The review by Martin et al. deals with a long standing problem at the interface of complex systems and molecular biology, that is the relationship between the topology of a complex network and its function. In biological terms the problem translates to relating the topology of gene regulatory networks (GRNs) to specific cellular functions. GRNs control the spatial and temporal activity of the genes encoded in the cell's genome by means of specialised proteins called Transcription Factors (TFs). A TF is able to recognise and bind specifically to a sequence (TF biding site) of variable length (order of magnitude of 10) found upstream of the sequence encoding one or more genes (at least in prokaryotes) and thus activating or repressing their transcription. TFs can thus be distinguished in activator and repressor. The picture can become more complex since some classes of TFs can form hetero-dimers consisting of a protein complex whose subunits are the individual TFs. Heterodimers can have completely different binding sites and activity compared to their individual parts. In this review the authors limit their attention to prokaryotes where the complexity of GRNs is somewhat reduced. Moreover they exploit a unique feature of living systems, i.e. evolution, to understand whether function can shape network topology. Indeed, prokaryotes such as bacteria are among the oldest living systems that have become perfectly adapted to their environment over geological scales and thus have reached an evolutionary steady-state where the fitness of the population has reached a plateau. By integrating in silico analysis and comparative evolution, the authors show that indeed function does tend to shape the structure of a GRN, however this trend is not always present and depends on the properties of the network being examined. Interestingly, the trend is more apparent for sparse networks, i.e. where the density of edges is very low. Sparsity is indeed one of the most prominent features

  19. Linking network topology to function. Comment on "Drivers of structural features in gene regulatory networks: From biophysical constraints to biological function" by O.C. Martin, A. Krzywicki and M. Zagorski

    NASA Astrophysics Data System (ADS)

    di Bernardo, Diego

    2016-07-01

    The review by Martin et al. deals with a long standing problem at the interface of complex systems and molecular biology, that is the relationship between the topology of a complex network and its function. In biological terms the problem translates to relating the topology of gene regulatory networks (GRNs) to specific cellular functions. GRNs control the spatial and temporal activity of the genes encoded in the cell's genome by means of specialised proteins called Transcription Factors (TFs). A TF is able to recognise and bind specifically to a sequence (TF biding site) of variable length (order of magnitude of 10) found upstream of the sequence encoding one or more genes (at least in prokaryotes) and thus activating or repressing their transcription. TFs can thus be distinguished in activator and repressor. The picture can become more complex since some classes of TFs can form hetero-dimers consisting of a protein complex whose subunits are the individual TFs. Heterodimers can have completely different binding sites and activity compared to their individual parts. In this review the authors limit their attention to prokaryotes where the complexity of GRNs is somewhat reduced. Moreover they exploit a unique feature of living systems, i.e. evolution, to understand whether function can shape network topology. Indeed, prokaryotes such as bacteria are among the oldest living systems that have become perfectly adapted to their environment over geological scales and thus have reached an evolutionary steady-state where the fitness of the population has reached a plateau. By integrating in silico analysis and comparative evolution, the authors show that indeed function does tend to shape the structure of a GRN, however this trend is not always present and depends on the properties of the network being examined. Interestingly, the trend is more apparent for sparse networks, i.e. where the density of edges is very low. Sparsity is indeed one of the most prominent features

  20. ALS Performance Summary - Update

    SciTech Connect

    Waters, A M; Brown, W D; Martz, Jr., H E

    2004-09-30

    High Energy Density Physics (HEDP) experiments play an important role in corroborating the improved physics codes that underlie LLNL's Stockpile Stewardship mission. Conducting these experiments, whether on the National Ignition Facility (NIF) or another national facility such as Omega, will require not only improvement in the diagnostics for measuring the experiment, but also detailed knowledge of the as-built target components and assemblies themselves. To assist in this effort, a defined set of well-known reference standards designed to represent a range of HEDP targets have been built and are being used to quantify the performance of different characterization techniques [Hibbard, et al. 2004]. Without the critical step of using reference standards for qualifying characterization tools there can be no verification of either commercial or internally-developed characterization techniques and thus an uncertainty in the input to the physics code models would exist.

  1. Implementation of Single-Shot Ellipsometry on Gas Gun Experiments

    NASA Astrophysics Data System (ADS)

    Grant, Sean; Ao, Tommy; Bernstein, Aaron; Davis, Jean-Paul; Ditmire, Todd; Dolan, Daniel; Lin, Jung-Fu; Seagle, Christopher

    2015-06-01

    We have built and implemented a time-resolved ellipsometry diagnostic for dynamic testing at Sandia National Laboratories. This diagnostic measures refractive index of a sample under dynamic conditions with a time resolution of a few nanoseconds. We show and discuss results from our first dynamic experiments on a gas gun. Future work will study geophysical materials under relevant pressure-temperature conditions. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. SAND2015-0376 A.

  2. Advanced PDV velocity extraction

    NASA Astrophysics Data System (ADS)

    Dolan, Daniel; Ao, Tommy; Furnish, Michael

    2015-06-01

    While PDV has become a standard diagnostic, reliable velocity extraction remains challenging. Measurements with multiple real/apparent velocities are intrinsically difficult to analyze, and overlapping frequency components invalidate standard extraction methods. This presentation describes an advanced analysis technique where overlapping frequency components are resolved in the complex Fourier spectrum. Practical matters--multiple region of interest selection, component intersection, and shock transitions--will also be discussed. Sandia National Laboratories is a multi-program laboratory operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85.

  3. Progress in iron transmission measurements relevant to the solar convection/radiation boundary

    NASA Astrophysics Data System (ADS)

    Bailey, J. E.; Nagayama, T.; Loisel, Guillaume; Rochau, G. A.; Blancard, C.; Colgan, J.; Cosse, Ph.; Faussurier, G.; Fontes, C. J.; Golovkin, I.; Hansen, S. B.; Iglesias, C. A.; Kilcrease, D. P.; Macfarlane, J. J.; Mancini, R. C.; Nahar, S. N.; Nash, T. J.; Orban, C.; Pinsonneault, M.; Pradhan, A. K.; Sherrill, M.; Wilson, B. G.

    2013-10-01

    Iron plasma opacity influences the internal structure of the sun. However, opacity models have never been experimentally tested at stellar interior conditions. Recent iron opacity experiments at the Sandia Z facility reached 195 eV temperatures, nearly the same as the solar convection/radiation zone boundary (CZB), at electron densities that are roughly 1/2 the solar CZB value. Progress to solidify these results and use them to examine the physical underpinnings of opacity models will be described. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94AL85000.

  4. Theoretical studies of AlF, AlCl, and AlBr

    NASA Technical Reports Server (NTRS)

    Langhoff, Stephen R.; Bauschlicher, Charles W., Jr.; Taylor, Peter R.

    1988-01-01

    Spectroscopic constants have been obtained for the lowest six singlet and lowest five triplet states of AlF and AlCl. The results suggest that the correct ordering of the triplet manifold in these molecules is: a 3Pi, b 3Sigma(+), c 3Sigma(+), d 3Pi, and e 3Delta. Radiative lifetimes have been determined for the excited states, and the A 1Pi to X 1Sigma(+) transition in AlF, AlCl, and AlBr has been examined in detail. A-X transition moment functions, Einstein coefficients, and A 1Pi vibrational lifetimes have been obtained for AlF and AlCl.

  5. Who was first to diagnose and report neuropathic arthropathy of the foot and ankle: Jean-Martin Charcot or Herbert William Page?

    PubMed

    Sanders, Lee J; Edmonds, Michael E; Jeffcoate, William J

    2013-09-01

    In November 1883, Jean-Martin Charcot and Charles Féré reported on bone and joint disease of the foot in cases of tabes dorsalis, and referred to the condition as 'pied tabétique'--a disabling neuropathic osteoarthropathy that we usually now refer to as the Charcot foot. Charcot had originally described neuropathic osteoarthropathy in more proximal joints in 1868, and in his 1883 paper with Féré stated that involvement of the short bones and small joints of the foot had not yet been described. They emphasised in the paper that one of their cases was the first ever observed, two years earlier, in 1881. It is relevant, however, that it was in this same year that involvement of the foot by tabetic arthropathy was presented to the International Medical Congress in London by an English surgeon, Herbert William Page. We believe that Page was the first to diagnose and to report a case of tabetic neuropathic osteoarthropathy in which the bones of the foot and ankle were involved. He was also the first to propose a link between the tabetic foot and disease of the peripheral nerves, as opposed to the central nervous system.

  6. Alexandria (Al Iskandariya), Egypt

    NASA Technical Reports Server (NTRS)

    2002-01-01

    This image of Alexandria was taken by astronauts on board the International Space Station in December 2000 using an Electronic Still Camera. A wider-angle view (STS088-739-90) taken from the Space Shuttle in December 1998 is available for context. Alexandria (Al Iskandariya) occupies a T-shaped peninsula and strip of land separating the Mediterranean from Lake Mariout. Originally the town was built upon a mole (stone breakwater) called Heptastadium, which joined the island of Pharos (see referenced website, below) to the mainland. Since then sedimentary deposits have widened the mole. Since 1905, when the 370,000 Alexandrians lived in an area of about 4 sq km between the two harbors, the city (population 4 million; see referenced website, below) has grown beyond its medieval walls and now occupies an area of about 300 sq km. The Mahmudiya Canal, connecting Alexandria with the Nile, runs to the south of the city and, by a series of locks, enters the harbor of the principal port of Egypt (note ships). The reddish and ochre polygons west of Lake Mariout are salt-evaporation, chemical-storage, and water-treatment ponds within the coastal lagoon. Reference Youssef Halim and Fatma Abou Shouk, 2000, Human impacts on Alexandria's marine environment: UNESCO, Coastal Regions and Small Islands Unit (CSI), Coastal Management Sourcebooks 2 (accessed December 20, 2000) Additional photographs taken by astronauts can be viewed at NASA-JSC's Gateway to Astronaut Photography of Earth. Image ISS001-ESC-5025 provided by the Earth Sciences and Image Analysis Laboratory, Johnson Space Center.

  7. Lockheed ER-2 #806 high altitude research aircraft during landing

    NASA Technical Reports Server (NTRS)

    1998-01-01

    ER-2 tail number 806, is one of two Airborne Science ER-2s used as science platforms by Dryden. The aircraft are platforms for a variety of high-altitude science missions flown over various parts of the world. They are also used for earth science and atmospheric sensor research and development, satellite calibration and data validation. The ER-2s are capable of carrying a maximum payload of 2,600 pounds of experiments in a nose bay, the main equipment bay behind the cockpit, two wing-mounted superpods and small underbody and trailing edges. Most ER-2 missions last about six hours with ranges of about 2,200 nautical miles. The aircraft typically fly at altitudes above 65,000 feet. On November 19, 1998, the ER-2 set a world record for medium weight aircraft reaching an altitude of 68,700 feet. The aircraft is 63 feet long, with a wingspan of 104 feet. The top of the vertical tail is 16 feet above ground when the aircraft is on the bicycle-type landing gear. Cruising speeds are 410 knots, or 467 miles per hour, at altitude. A single General Electric F-118 turbofan engine rated at 17,000 pounds thrust powers the ER-2.

  8. Lockheed ER-2 #809 high altitude research aircraft in flight

    NASA Technical Reports Server (NTRS)

    1999-01-01

    ER-2 tail number 809, is one of two Airborne Science ER-2s used as science platforms by Dryden. The aircraft are platforms for a variety of high-altitude science missions flown over various parts of the world. They are also used for earth science and atmospheric sensor research and development, satellite calibration and data validation. The ER-2s are capable of carrying a maximum payload of 2,600 pounds of experiments in a nose bay, the main equipment bay behind the cockpit, two wing-mounted superpods and small underbody and trailing edges. Most ER-2 missions last about six hours with ranges of about 2,200 nautical miles. The aircraft typically fly at altitudes above 65,000 feet. On November 19, 1998, the ER-2 set a world record for medium weight aircraft reaching an altitude of 68,700 feet. The aircraft is 63 feet long, with a wingspan of 104 feet. The top of the vertical tail is 16 feet above ground when the aircraft is on the bicycle-type landing gear. Cruising speeds are 410 knots, or 467 miles per hour, at altitude. A single General Electric F118 turbofan engine rated at 17,000 pounds thrust powers the ER-2.

  9. Lockheed ER-2 #809 high altitude research aircraft in flight

    NASA Technical Reports Server (NTRS)

    1998-01-01

    ER-2 tail number 809, is one of two Airborne Science ER-2s used as science platforms by Dryden. The aircraft are platforms for a variety of high-altitude science missions flown over various parts of the world. They are also used for earth science and atmospheric sensor research and development, satellite calibration and data validation. The ER-2s are capable of carrying a maximum payload of 2,600 pounds of experiments in a nose bay, the main equipment bay behind the cockpit, two wing-mounted superpods and small underbody and trailing edges. Most ER-2 missions last about six hours with ranges of about 2,200 nautical miles. The aircraft typically fly at altitudes above 65,000 feet. On November 19, 1998, the ER-2 set a world record for medium weight aircraft reaching an altitude of 68,700 feet. The aircraft is 63 feet long, with a wingspan of 104 feet. The top of the vertical tail is 16 feet above ground when the aircraft is on the bicycle-type landing gear. Cruising speeds are 410 knots, or 467 miles per hour, at altitude. A single General Electric F-118 turbofan engine rated at 17,000 pounds thrust powers the ER-2.

  10. Lockheed laminar-flow control systems development and applications

    NASA Technical Reports Server (NTRS)

    Lange, Roy H.

    1987-01-01

    Progress is summarized from 1974 to the present in the practical application of laminar-flow control (LFC) to subsonic transport aircraft. Those efforts included preliminary design system studies of commercial and military transports and experimental investigations leading to the development of the leading-edge flight test article installed on the NASA JetStar flight test aircraft. The benefits of LFC on drag, fuel efficiency, lift-to-drag ratio, and operating costs are compared with those for turbulent flow aircraft. The current activities in the NASA Industry Laminar-Flow Enabling Technologies Development contract include summaries of activities in the Task 1 development of a slotted-surface structural concept using advanced aluminum materials and the Task 2 preliminary conceptual design study of global-range military hybrid laminar flow control (HLFC) to obtain data at high Reynolds numbers and at Mach numbers representative of long-range subsonic transport aircraft operation.

  11. Lockheed design of a wind satellite (WINDSAT) experiment

    NASA Technical Reports Server (NTRS)

    Osmundson, John S.; Martin, Stephen C.

    1985-01-01

    WINDSAT is a proposed space based global wind measuring system. A Shuttleborne experiment is proposed as a proof of principle demonstration before development of a full operational system. WINDSAT goals are to measure wind speed and direction to + or - 1 m/s and 10 deg accuracy over the entire earth from 0 to 20 km altitude with 1 km altitude resolution. The wind measuring instrument is a coherent lidar incorporating a pulsed CO2 TEA laser transmitter and a continuously scanning 1.25 m diameter optical system. The wind speed is measured by heterodyne detecting the backscattered return laser radiation and measuring this frequency shift.

  12. Case study: Lockheed-Georgia Company integrated design process

    NASA Technical Reports Server (NTRS)

    Waldrop, C. T.

    1980-01-01

    A case study of the development of an Integrated Design Process is presented. The approach taken in preparing for the development of an integrated design process includes some of the IPAD approaches such as developing a Design Process Model, cataloging Technical Program Elements (TPE's), and examining data characteristics and interfaces between contiguous TPE's. The implementation plan is based on an incremental development of capabilities over a period of time with each step directed toward, and consistent with, the final architecture of a total integrated system. Because of time schedules and different computer hardware, this system will not be the same as the final IPAD release; however, many IPAD concepts will no doubt prove applicable as the best approach. Full advantage will be taken of the IPAD development experience. A scenario that could be typical for many companies, even outside the aerospace industry, in developing an integrated design process for an IPAD-type environment is represented.

  13. Thermal Modeling of Al-Al and Al-Steel Friction Stir Spot Welding

    NASA Astrophysics Data System (ADS)

    Jedrasiak, P.; Shercliff, H. R.; Reilly, A.; McShane, G. J.; Chen, Y. C.; Wang, L.; Robson, J.; Prangnell, P.

    2016-07-01

    This paper presents a finite element thermal model for similar and dissimilar alloy friction stir spot welding (FSSW). The model is calibrated and validated using instrumented lap joints in Al-Al and Al-Fe automotive sheet alloys. The model successfully predicts the thermal histories for a range of process conditions. The resulting temperature histories are used to predict the growth of intermetallic phases at the interface in Al-Fe welds. Temperature predictions were used to study the evolution of hardness of a precipitation-hardened aluminum alloy during post-weld aging after FSSW.

  14. Thermal Modeling of Al-Al and Al-Steel Friction Stir Spot Welding

    NASA Astrophysics Data System (ADS)

    Jedrasiak, P.; Shercliff, H. R.; Reilly, A.; McShane, G. J.; Chen, Y. C.; Wang, L.; Robson, J.; Prangnell, P.

    2016-09-01

    This paper presents a finite element thermal model for similar and dissimilar alloy friction stir spot welding (FSSW). The model is calibrated and validated using instrumented lap joints in Al-Al and Al-Fe automotive sheet alloys. The model successfully predicts the thermal histories for a range of process conditions. The resulting temperature histories are used to predict the growth of intermetallic phases at the interface in Al-Fe welds. Temperature predictions were used to study the evolution of hardness of a precipitation-hardened aluminum alloy during post-weld aging after FSSW.

  15. Philosophieren als Unterrichtsprinzip im Mathematikunterricht

    NASA Astrophysics Data System (ADS)

    Meerwaldt, Diana

    Philosophieren und Mathematik scheinen zunächst gegensätzliche Bereiche zu sein, die sich kaum vereinbaren lassen. Dies trifft für eine Auffassung zu, die Philosophieren als "Gerede" disqualifiziert und Mathematik als eine reine "Formelwissenschaft" begreift. Beide Auffassungen werden den Gegenständen nicht gerecht.

  16. Distribution, movement, and fate of nitrate in the surficial aquifer beneath citrus groves, Indian River, Martin, and St Lucie Counties, Florida

    USGS Publications Warehouse

    Crandall, Christy A.

    2000-01-01

    The surficial aquifer system beneath citrus groves in Indian River, Martin, and St. Lucie Counties, Florida, was studied to determine the effects of citrus agriculture on ground-water quality. The surficial aquifer is the primary drinking-water source for Martin and St. Lucie Counties and furnishes about 33 percent of the drinking-water for Indian River County. Water-quality samples and water-level data were collected from December 1996 through October 1998. Nitrate concentrations in ground water exceeded 10 milligrams per liter (mg/L), the U.S. Environmental Protection Agency?s maximum contaminant level for nitrate reported as nitrogen, in 5 percent of the samples from citrus groves. These exceedances occurred in samples from wells with depths of 10 feet or less at citrus groves, and mostly in samples collected during or immediately following fertilizer applications. Samples from wells with depths of 20-25 feet contained little or no nitrate. The decreased nitrate concentrations in ground water with depth was not consistent with chloride and dissolved-solids concentrations, two other common indicators of agricultural activity. Chloride and dissolved-solids concentrations remained elevated in ground-water samples from all depths at citrus groves; median chloride and dissolved-solids concentrations in samples from citrus sites were 125 and 779 mg/L, respectively. In comparison, samples from the reference site had maximum chloride and dissolved-solids concentrations of 61 and 366 mg/L, respectively. Based on the age of ground water at 20-25 foot depths (3-50 years, measured with tritium and helium-3 concentration ratios), nitrate concentrations also should have remained elevated with depth because fertilizers have been used for at least 20-30 years at these citrus groves. Nitrate concentrations decreased with depth as a result of denitrification. This could have occurred because favorable conditions for denitrification existed in the aquifer, including high

  17. The Advanced Launch System (ALS)

    NASA Astrophysics Data System (ADS)

    Eldred, Charles H.

    The Advanced Launch System (ALS) is an unmanned vehicle that will achieve low hardware cost by using a reusable booster stage which flies back to the launch site, and a core stage in which the rocket engines and redundant avionics are in a module that is returned to earth and recovered for reuse. The booster's utilization of liquid propellant instead of solid propellant will help lower the consumable costs. The ALS also includes launch processing and flight control facilities, necessary support equipment, and ground- and flight-operations infrastructure. The ALS program studies show that, through the ALS, the United States can launch a major Mars initiative economically and with confidence. It is estimated that the objective ALS can be operational in the late 1990s.

  18. A Laminated Carbonate Record of Late Holocene Mid-Continental Hydroclimate: Geochemical and Sedimentological Results from Martin Lake, LaGrange County, Indiana

    NASA Astrophysics Data System (ADS)

    Stamps, L. G.; Bird, B. W.; Gilhooly, W., III

    2014-12-01

    Paleoclimate records from the mid-continental United States that span the Holocene with sub-decadal resolution are rare. This is especially true for geochemical records that capture the isotopic composition of precipitation or local precipitation/evaporation balances. As a result, many questions remain about the hydrologic expression of abrupt climate events in this region that today is one of the world's largest agricultural centers. Here, we present sedimentological, geochemical, and chronological data spanning the last 3,000 years from a set of sediment cores from Martin Lake in northeastern Indiana. Today, this kettle lake is hydrologically open with persistent water column stratification and bottom water anoxia. Radiometric dating shows that the lake formed at approximately 16,000 cal yr BP and continuously accumulated sediment thereafter. We focus here on developing a stable isotope record of the late Holocene at decadal resolution to provide a detailed view of precipitation isotopic variability during this time. The Midwest has been influenced by changes in atmospheric circulation patterns throughout the late Holocene, leading to climate events like the Little Ice Age and Medieval Climate Anomaly, which significantly changed temperature and precipitation regimes. The isotopic composition of precipitation in the Midwest has been shown to be heavily influenced by the source of atmospheric moisture as mediated by the Pacific North American mode of atmospheric variability that in turn affects the position of the Polar Front Jetstream. Using high-resolution stable isotope measurements and ultimately climate modeling, we seek to reconstruct the isotopic expression of late Holocene climate events in the mid continental United States and assess the possible relationship with these dominant modes of atmospheric variability. Future work includes extending this reconstruction through the Holocene and increasing the temporal resolution of the data.

  19. Geochemistry, geology, and isotopic (Sr, S, and B) composition of evaporites in the Lake St. Martin impact structure: New constraints on the age of melt rock formation

    NASA Astrophysics Data System (ADS)

    Leybourne, Matthew I.; Denison, Rodger E.; Cousens, Brian L.; Bezys, Ruth K.; Gregoire, D. Conrad; Boyle, Dan R.; Dobrzanski, Ed

    2007-03-01

    We report new Sr, S, and B isotopic data for evaporites (gypsum, anhydrite), carbonates, melt rocks, gneisses, and groundwaters recovered in and around the Lake St. Martin (LSM) impact structure, Interlake Region, Manitoba, Canada. The LSM meteorite impacted Devonian to Ordovician carbonates and sandstones of the eastern Williston Basin, resulting in partial melting of underlying Superior Province (~2.5 Ga) gneisses of the Canadian Shield. Overlying the LSM melt rocks are red beds and evaporites (anhydrite/gypsum/glauberite) previously inferred to have been deposited during the Jurassic. The 87Sr/86Sr (lowest values cluster at 0.70836) and δ 34SCDT (+23.7 +/- 0.9‰) of the evaporites, combined with B isotope compositions of associated groundwaters (δ 11BNBS951 = +25 to +28‰), are consistent with evaporite deposition within the impact structure near the edge of an ocean-connected salina. The establishment of a marine origin for the evaporites offers a method of age assignment using the secular variation of S and Sr isotopes in seawater. Comparison of Sr and S isotope results with the seawater curves precludes Jurassic deposition for the evaporites or correlation with Watrous and Amaranth formation evaporites, previously considered correlative with those at LSM. The lowest Sr and mean of S isotope values from the LSM evaporites are similar to seawater in the latest Devonian, consistent with conodonts recovered from carbonate breccia overlying melt rocks, and we suggest this as an alternative age of the evaporites. Data presented here preclude a Jurassic age for the evaporites and therefore for the impact event.

  20. Crime, hysteria and belle époque hypnotism: the path traced by Jean-Martin Charcot and Georges Gilles de la Tourette.

    PubMed

    Bogousslavsky, Julien; Walusinski, Olivier; Veyrunes, Denis

    2009-01-01

    Hysteria and hypnotism became a favorite topic of studies in the fin de siècle neurology that emerged from the school organized at La Salpêtrière by Jean-Martin Charcot, where he had arrived in 1861. Georges Gilles de la Tourette started working with Charcot in 1884 and probably remained his most faithful student, even after his mentor's death in 1893. This collaboration was particularly intense on 'criminal hypnotism', an issue on which Hippolyte Bernheim and his colleagues from the Nancy School challenged the positions taken by the Salpêtrière School. Bernheim claimed that hypnotism was not a diagnostic feature of hysteria and that there were real-life examples of murders suggested under hypnosis, while hypnosis susceptibility was identified with hysteria by Charcot and Gilles de la Tourette, who saw rape as the only crime associated with hypnotism. The quarrel was particularly virulent during a series of famous criminal cases which took place between 1888 and 1890. At the time, it was considered that La Salpêtrière had succeeded over Nancy, since the role of hypnotism was discarded during these famous trials. However, the theories of Charcot and Gilles de la Tourette were also damaged by the fight, which probably triggered the conceptual evolution leading to Joseph Babinski's revision of hysteria in 1901. Gilles de la Tourette's strong and public interest in hypnotism nearly cost him his life, when a young woman who claimed to have been hypnotized against her will shot him in the head at his own home in 1893. It was subsequently shown that hypnotism had nothing to do with it. The delusional woman was interned at Sainte-Anne for mental disturbance, thus escaping trial. Ironically, Gilles de la Tourette may have been partly responsible, since he had been one of the strongest proponents of placing mentally-ill criminals in asylums instead of prisons.

  1. Mars - Surface Temperature South Polar Region

    NASA Technical Reports Server (NTRS)

    1997-01-01

    The Jet Propulsion Laboratory's Mars Surveyor Operations Project operates the Mars Global Surveyor spacecraft with its industrial partner, Lockheed Martin Astronautics, from facilities in Pasadena, CA and Denver, CO.

  2. Orion Spacecraft Takes Shape

    NASA Video Gallery

    Technicians move the two halves of the Orion crew exploration vehicle's crew module into place to fuse them together at NASA's Michoud Assembly Facility in New Orleans, La. The Lockheed Martin Orio...

  3. What Makes Orion Unique?

    NASA Video Gallery

    Cleon Lacefield, vice-president, Lockheed Martin, and Orion program manager, discusses why humans explore and how Orion, the new state-of-the-art crew vehicle, is going to help us explore our solar...

  4. Quantum dots formed in InSb/AlAs and AlSb/AlAs heterostructures

    NASA Astrophysics Data System (ADS)

    Abramkin, D. S.; Rumynin, K. M.; Bakarov, A. K.; Kolotovkina, D. A.; Gutakovskii, A. K.; Shamirzaev, T. S.

    2016-06-01

    The crystal structure of new self-assembled InSb/AlAs and AlSb/AlAs quantum dots grown by molecularbeam epitaxy has been investigated by transmission electron microscopy. The theoretical calculations of the energy spectrum of the quantum dots have been supplemented by the experimental data on the steady-state and time-resolved photoluminescence spectroscopy. Deposition of 1.5 ML of InSb or AlSb on the AlAs surface carried out in the regime of atomic-layer epitaxy leads to the formation of pseudomorphically strained quantum dots composed of InAlSbAs and AlSbAs alloys, respectively. The quantum dots can have the type-I and type-II energy spectra depending on the composition of the alloy. The ground hole state in the quantum dot belongs to the heavy-hole band and the localization energy of holes is much higher than that of electrons. The ground electron state in the type-I quantum dots belongs to the indirect X XY valley of the conduction band of the alloy. The ground electron state in the type-II quantum dots belongs to the indirect X valley of the conduction band of the AlAs matrix.

  5. Medical application of 26Al

    NASA Astrophysics Data System (ADS)

    Steinhausen, C.; Gerisch, P.; Heisinger, B.; Hohl, Ch.; Kislinger, G.; Korschinek, G.; Niedermayer, M.; Nolte, E.; Dumitru, M.; Alvarez-Brückmann, M.; Schneider, M.; Ittel, T. H.

    1996-06-01

    Accelerator mass spectrometry (AMS) measurements with 26Al as tracer were performed in order to study the aluminium metabolism and anomalies in the human body and in rats. In particular, the differences between healthy volunteers and patients with renal failure were investigated. The obtained data points of 26Al in blood and urine were described by an open compartment model with three peripheral compartments. It was found that the minimum of peripheral compartments needed to describe 26Al concentrations in blood and urine over a time period of three years is at least three.

  6. Schwarzschild, Martin (1912-97)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    Astrophysicist, born in Potsdam, Germany, the son of KARL SCHWARZSCHILD, left Germany, became professor at Princeton University. Working with John von Neumann, Schwarzschild used the powers of the newly developed electronic digital computers to work on the theory of stellar structure and evolution. He uncovered phenomena in red giant stars, including how they evolve off the main sequence in the H...

  7. [Portrait of Jean Martin Charcot].

    PubMed

    Bonduelle, M

    1993-06-01

    Throughout paintings, engravings, and photography, Charcot's face and his life at the Salepêtrière have become widely known. More importantly, his biographers and those who wrote about their firsthand experiences with Charcot have brought to life his authority and his penetrating eye. Charcot held his students, his patients, and all those in close contact with him under a despotic rule. His shyness and emotions hid behind a cold and impenetrable mask. Much has been written about Charcot's life at the Salpêtrière. He transformed the old hospice into an institute of neurology considered internationally as a model, and its fame attracted visitors and patients from around the world. He formed a school at the Salpêtrière composed of his many students. These young men gathered each Tuesday evening in the luxurious reception halls of his mansion on Boulevard Saint-Germain. There they mixed with writers, artists, and politicians who were firmly republican and anticlerical. There is only information on Charcot's early years other than the major dates of his career and a few legends. Arriving at the Salpêtrière in 1862, he created the foundations of neurology over the next decade by applying the anatomoclinical method. Built on the traditions of the French anamatopathological method, his system was adapted by Charcot to incorporate the new advances in microscopy and cellular pathology. Later in his career, he also directed a scientific effort towards psychophysiologic explorations of hysteria and hypnosis, some inciting severe criticism. This judgement has been revised and in its place there remains the boldness of an innovative mind. His neurological achievement remains undisputed.(ABSTRACT TRUNCATED AT 250 WORDS)

  8. In memory of Al Cameron

    NASA Astrophysics Data System (ADS)

    Cowan, John; Truran, James W.

    Al Cameron, who died recently (October 3, 2005) at 80, was one of the giants in astrophysics. His insights were profound and his interests were wide-ranging. Originally trained as a nuclear physicist, he made major contributions in a number of fields, including nuclear reactions in stars, nucleosynthesis, the abundances of the elements in the Solar System, and the origin of the Solar System and the Moon. In 1957, Cameron and, independently, Burbidge, Burbidge, Fowler and Hoyle, wrote seminal papers on nuclear astrophysics. Most of our current ideas concerning ele- ment formation in stars have followed from those two pioneering and historical works. Al also made many contributions in the field of Solar System physics. Particularly noteworthy in this regard was Cameron's work on the formation of the Moon. Al was also a good friend and mentor of young people. Al Cameron will be missed by many in the community both for his scientific contributions and for his friendship.

  9. Comparing the Thermodynamic Behaviour of Al(1)+ZrO2(s) to Al(1)+Al2O3(s)

    NASA Technical Reports Server (NTRS)

    Copland, Evan

    2004-01-01

    In an effort to better determine the thermodynamic properties of Al(g) and Al2O(g). the vapor in equilibrium with Al(l)+ZrO2(s) was compared to the vapor in equilibrium with Al(l)+Al2O3(s) over temperature range 1197-to-1509K. The comparison was made directly by Knudsen effusion-cell mass spectrometry with an instrument configured for a multiple effusion-cell vapor source (multi-cell KEMS). Second law enthalpies of vaporization of Al(g) and Al2O(g) together with activity measurements show that Al(l)+ZrO2(s) is thermodynamically equivalent to Al(l)+Al2O3(s), indicating Al(l) remained pure and Al2O3(s) was present in the ZrO2-cell. Subsequent observation of the Al(l)/ZrO2 and vapor/ZrO2 interfaces revealed a thin Al2O3-layer had formed, separating the ZrO2-cell from Al(l) and Al(g)+Al2O(g), effectively transforming it into an Al2O3 effusion-cell. This behavior agrees with recent observations made for Beta-NiAl(Pt) alloys measured in ZrO2 effusion-cell.

  10. Snow vole (Chionomys nivalis Martins) affects the redistribution of soil organic matter and hormone-like activity in the alpine ecosystem: ecological implications.

    PubMed

    Pizzeghello, Diego; Cocco, Stefania; Francioso, Ornella; Ferrari, Erika; Cardinali, Alessandra; Nardi, Serenella; Agnelli, Alberto; Corti, Giuseppe

    2015-10-01

    In alpine environments, colonies of snow vole (Chionomys nivalis Martins) cause strong pedoturbation, which may affect humification process and soil organic matter (SOM) cycling, with repercussions on the hormone-like activity of organics. We investigated the effect of snow vole pedoturbation on the chemical and spectroscopic features of soil organic fractions, and the potential hormone-like activity of humic and fulvic acids (HA, FA). The study site was located on the high-mountain environment of the Majella massif (central Italy). Pedoturbated and regular soils were morphologically described and characterized for pH and content of total organic carbon, total extractable carbon, HA, and FA. Both HA and FA were extracted and investigated using attenuated total reflectance/Fourier transform infrared (ATR/FTIR), nuclear magnetic resonance with high-resolution magic angle spinning (HRMAS-NMR), and (1)H-(13)C heteronuclear single quantum coherence (HSQC). HA and FA were also tested for their auxin-like and gibberellin-like activities. Results provide evidences that bioturbated and regular soils contain a poorly decomposed SOM, but HA and FA with a well-defined molecular structure. The HA and FA from both bioturbated and regular soils show a hormone-like activity with a different allocation along the soil profile. In the regular soil, the highest auxin-like activity was shown by HA and FA from Oe1 horizon, while gibberellin-like activity was expressed by FA from Oe2 horizon. Burrowing activity determines a redistribution of organics throughout the profile with a relatively high auxin-like activity in the FA from straw tunnel wall (STW) and gibberellin-like activity in the HA from vole feces (VF). The relative high presence of carboxylic acids, amides, proteins, and amino acids in the FA from STW and the aromatic moieties in the HA from VF put evidences for their different behavior. The fact that snow vole activity has modified the chemical and biological properties of

  11. Alfred Vulpian and Jean-Martin Charcot in each other's shadow? From Castor and Pollux at La Salpêtrière to neurology forever.

    PubMed

    Bogousslavsky, Julien; Walusinski, Olivier; Moulin, Thierry

    2011-01-01

    While Alfred Vulpian (1826-1887) is not completely forgotten, he cannot match the uninterrupted celebrity which Jean-Martin Charcot (1825-1893) still enjoys today. After becoming interne (residents) at the same institute in 1848, both were involved in shaping the cradle of what would become modern neurology. Both started work as chiefs at a La Salpêtrière service on January 1, 1862, making common rounds and studies, with several common publications. While their friendship remained 'for life', as stated by Charcot at Vulpian's funeral, their career paths differed. Vulpian progressed quicker and higher, being appointed full professor and elected at the Académie Nationale de Médecine and the Académie des Sciences several years before Charcot, as well as becoming dean of the Paris Faculty of Medicine. These positions also enabled him to support his friend Charcot in getting appointed full clinical professor and becoming the first holder of the chair of Clinique des Maladies du Système Nerveux in 1882. Before studying medicine, Vulpian had worked in physiology with Pierre Flourens, and his career always remained balanced between physiology and neurology, with remarkable papers. He introduced Charcot to optic microscopy during their La Salpêtrière years, indirectly helping him to become his successor to the chair of pathological anatomy in 1872. While Vulpian succeeded so well in local medical affairs, Charcot spent his time building up a huge clinical service and a teaching 'school' at La Salpêtrière, which he never left for over 31 years until his death. This 'school' progressively became synonymous with clinical neurology itself and perpetuated the master's memory for decades. Vulpian never had such support, although Jules Déjerine was his pupil and Joseph Babinski was his interne before becoming Charcot's chef de clinique (chief of staff) in 1885. This unusual switch in Parisian medicine contributed to Charcot's unaltered celebrity over more than a century

  12. Ab initio modeling of zincblende AlN layer in Al-AlN-TiN multilayers

    NASA Astrophysics Data System (ADS)

    Yadav, S. K.; Wang, J.; Liu, X.-Y.

    2016-06-01

    An unusual growth mechanism of metastable zincblende AlN thin film by diffusion of nitrogen atoms into Al lattice is established. Using first-principles density functional theory, we studied the possibility of thermodynamic stability of AlN as a zincblende phase due to epitaxial strains and interface effect, which fails to explain the formation of zincblende AlN. We then compared the formation energetics of rocksalt and zincblende AlN in fcc Al through direct diffusion of nitrogen atoms to Al octahedral and tetrahedral interstitials. The formation of a zincblende AlN thin film is determined to be a kinetically driven process, not a thermodynamically driven process.

  13. How spatial variations of chalk groundwater geochemistry are related to superficial formations and infiltration processes of unsaturated zone (quarry of Saint Martin le Noeud, France)

    NASA Astrophysics Data System (ADS)

    Barhoum, Sarah; Valdès-Lao, Danièle; Guérin, Roger; Gombert, Philippe

    2013-04-01

    Chalk is complex because of its dual porosity and because of superficial layers more or less thick and more or less permeable. Furthermore there is few knowledge in understanding of groundwater infiltration and dissolution processes in the chalk unsaturated zone (UZ). The role of superficial formations has to be studied especially. The experimental site is an ancient underground quarry of chalk which extends over 1200 m long and 150 m wide (30 m depth) in Saint Martin le Noeud, south of Beauvais, France. This quarry is particularly interesting to study infiltration and dissolution processes indeed this site allows to access to the interface between the unsaturated zone and the saturated zone. Water percolates from the top of the quarry more or less depending on the season. Water table outcrops in the cave and makes about 20 underground lakes. Above the quarry chalk is covered clay-with-flints (CWF) and loess, in surface there are cultivated crops fields. On the first year of the study, physicochemical parameters: temperature, depth, pH, conductivity were recorded in seven lakes with high frequency (every hour). During the same period we sampled the 20 lakes water every month to measure major ions. During this sampling period, percolation was not sufficient to collect percolated water. Results of underground GPS, electric resistivity tomography and observations of three borehole showed that thickness unsaturated zone and that the thicknesses of the superficial formations vary a lot spatially. Three interesting points (separated by less than 1 km) are presented: the above the Pedro lake (25 m of UZ, a few cm of CWF), above the Stalactites lake (30 m of UZ, more than 2.40 m of CWF); above the Blue lake (35 m depth, 60 cm of CWF). First results of chemistry showed that the temporal variation is very low during the first year but there spatial variation is very important at quarry scale. The geochemistry of the lakes are very different: HCO3- varies from 100 to 250mg

  14. Andalusian astronomy: al-Zij al-Muqtabis of Ibn al-Kammâd.

    NASA Astrophysics Data System (ADS)

    Chabás, J.; Goldstein, B. R.

    1994-12-01

    In the twelfth century the Arabic astronomer Ibn al-Kammâd, living in Islamic Spain, composed three sets of astronomical tables, called "zijes". The zijes were largely based on the work of predecessors, going back to Ptolemy on the one hand, and Hindu astronomers on the other. None of his zijes survived in the original Arabic, but a Latin manuscript contains a translation of an apparently complete zij, the "al-Zij al-Muqtabis". This paper examines the body of astronomical knowledge contained in this zij. Specifically, it is shown that one can gain valuable information on the solar theory of the Islamic astronomers from this translation. Furthermore, the theory of lunar and solar eclipses in the work is analyzed, and tables of mean planetary and solar motions are discussed. In addition, tables for the motion of the vernal equinox, star tables, and several topics of Islamic spherical astronomy are examined.

  15. Microstructure Evolution and Mechanical Properties of Al/Al-Mg/Al composite sheet metals

    NASA Astrophysics Data System (ADS)

    Cho, Jaehyung; Kim, Su-Hyeon; Kim, Hyoung-Wook; Lim, Cha-Yong; Kim, Eun-Young; Choi, Shi-Hoon

    2011-08-01

    Two different types of aluminum alloys of AA1050 and AA5182 were used to manufacture Al/Al-Mg/Al composite sheet metals by roll bonding technology at room temperature. The composite sheet metals were annealed at 400 °C and carried out uniaxial tension tests to investigate mechanical properties. Macroscopic mechanical properties are strongly dependent on the volume (or thickness) fraction of two component layers. Microstructure and texture evolution were also investigated during roll bonding process. The AA1050 sheets located in the outer layer mainly consist of shear texture components and the AA5182 sheet located in the center layer consists of plane strain texture components. With differential speeds of the top and bottom rolls, roll bonding was also carried out. Elongation along the RD and TD was improved at a speed difference of approximately 10%-20%.

  16. Dynamic Modeling of ALS Systems

    NASA Technical Reports Server (NTRS)

    Jones, Harry

    2002-01-01

    The purpose of dynamic modeling and simulation of Advanced Life Support (ALS) systems is to help design them. Static steady state systems analysis provides basic information and is necessary to guide dynamic modeling, but static analysis is not sufficient to design and compare systems. ALS systems must respond to external input variations and internal off-nominal behavior. Buffer sizing, resupply scheduling, failure response, and control system design are aspects of dynamic system design. We develop two dynamic mass flow models and use them in simulations to evaluate systems issues, optimize designs, and make system design trades. One model is of nitrogen leakage in the space station, the other is of a waste processor failure in a regenerative life support system. Most systems analyses are concerned with optimizing the cost/benefit of a system at its nominal steady-state operating point. ALS analysis must go beyond the static steady state to include dynamic system design. All life support systems exhibit behavior that varies over time. ALS systems must respond to equipment operating cycles, repair schedules, and occasional off-nominal behavior or malfunctions. Biological components, such as bioreactors, composters, and food plant growth chambers, usually have operating cycles or other complex time behavior. Buffer sizes, material stocks, and resupply rates determine dynamic system behavior and directly affect system mass and cost. Dynamic simulation is needed to avoid the extremes of costly over-design of buffers and material reserves or system failure due to insufficient buffers and lack of stored material.

  17. Response to Pagano et al.

    PubMed

    Rezende, Flávia; Löwe, Oliver; Helfinger, Valeska; Prior, Kim-Kristin; Walter, Maria; Zukunft, Sven; Fleming, Ingrid; Weissmann, Norbert; Brandes, Ralf P; Schröder, Katrin

    2015-11-20

    In their letter, Pagano et al. appreciate the development of the Nox1, Nox2, and Nox4 triple (3N(-/-)) knockout mouse. They also agree on the view that chemiluminescence assays in general have severe limitations. However, they criticize the fact that the membrane assays in the particular study were restricted to chemiluminescence techniques. Moreover, Pagano et al. got the impression that statements concerning membrane assays of Nox activity in general were made. In addition to a lack of some technical details, Pagano et al. also found the characterization of the 3N(-/-) incomplete and some of the results to be incomprehensible. Although we are grateful for the interest of Pagano et al. in our work, we realized that basically each observation of our study was questioned. This is certainly an excessive rejection of the study in total and fails to appreciate the clear chain of evidences presented. Our work focused on chemiluminescence, and thus, any conclusions are restricted to this technique. Moreover, the 3N(-/-) mice were never developed to study the physiology of Nox enzymes, but rather to validate Nox specificity of NADPH-stimulated chemiluminescence assays. We are convinced that our findings are a valid demonstration that chemiluminescence-based assays in membrane preparations stimulated with NADPH do not measure Nox activity. This conclusion is based on both overexpression studies as well as genetic deficient mouse models. The criticisms of Pagano et al. thus might be justified in some aspects; they, however, cannot disprove the conclusions of our work. Antioxid. Redox Signal. 23, 1247-1249.

  18. Response to Pagano et al.

    PubMed

    Rezende, Flávia; Löwe, Oliver; Helfinger, Valeska; Prior, Kim-Kristin; Walter, Maria; Zukunft, Sven; Fleming, Ingrid; Weissmann, Norbert; Brandes, Ralf P; Schröder, Katrin

    2015-11-20

    In their letter, Pagano et al. appreciate the development of the Nox1, Nox2, and Nox4 triple (3N(-/-)) knockout mouse. They also agree on the view that chemiluminescence assays in general have severe limitations. However, they criticize the fact that the membrane assays in the particular study were restricted to chemiluminescence techniques. Moreover, Pagano et al. got the impression that statements concerning membrane assays of Nox activity in general were made. In addition to a lack of some technical details, Pagano et al. also found the characterization of the 3N(-/-) incomplete and some of the results to be incomprehensible. Although we are grateful for the interest of Pagano et al. in our work, we realized that basically each observation of our study was questioned. This is certainly an excessive rejection of the study in total and fails to appreciate the clear chain of evidences presented. Our work focused on chemiluminescence, and thus, any conclusions are restricted to this technique. Moreover, the 3N(-/-) mice were never developed to study the physiology of Nox enzymes, but rather to validate Nox specificity of NADPH-stimulated chemiluminescence assays. We are convinced that our findings are a valid demonstration that chemiluminescence-based assays in membrane preparations stimulated with NADPH do not measure Nox activity. This conclusion is based on both overexpression studies as well as genetic deficient mouse models. The criticisms of Pagano et al. thus might be justified in some aspects; they, however, cannot disprove the conclusions of our work. Antioxid. Redox Signal. 23, 1247-1249. PMID:26173053

  19. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions.

    PubMed

    Zhang, Kun; Li, Huan-Huan; Grünberg, Peter; Li, Qiang; Ye, Sheng-Tao; Tian, Yu-Feng; Yan, Shi-Shen; Lin, Zhao-Jun; Kang, Shi-Shou; Chen, Yan-Xue; Liu, Guo-Lei; Mei, Liang-Mo

    2015-09-21

    Magnetoresistance and rectification are two fundamental physical properties of heterojunctions and respectively have wide applications in spintronics devices. Being different from the well known various magnetoresistance effects, here we report a brand new large magnetoresistance that can be regarded as rectification magnetoresistance: the application of a pure small sinusoidal alternating-current to the nonmagnetic Al/Ge Schottky heterojunctions can generate a significant direct-current voltage, and this rectification voltage strongly varies with the external magnetic field. We find that the rectification magnetoresistance in Al/Ge Schottky heterojunctions is as large as 250% at room temperature, which is greatly enhanced as compared with the conventional magnetoresistance of 70%. The findings of rectification magnetoresistance open the way to the new nonmagnetic Ge-based spintronics devices of large rectification magnetoresistance at ambient temperature under the alternating-current due to the simultaneous implementation of the rectification and magnetoresistance in the same devices.

  20. Thermodynamic modeling of Pt-Al and Pd-Al

    NASA Astrophysics Data System (ADS)

    Carr, Derek

    2011-03-01

    Pure platinum and pure palladium are too soft for typical jewelry applications. Adding small amounts of other metals can significantly increase their performance. However, international hallmarking standards require the alloys to be 95% pure by weight. How does one achieve significant improvements in performance adding only small amounts (5 wt-%) of other metals? Significant improvements are possible even with small additions if precipitate hardening can be induced. Using a combination of first-principles, cluster expansion, and Monte Carlo modeling, we have identified new Pt-rich/Pd-rich phases in Pt-Al and Pd-Al that should be useful in precipitate hardening. Thermodynamical modeling indicates that the phases are experimentally feasible (not kinetically inhibited).

  1. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions

    NASA Astrophysics Data System (ADS)

    Zhang, Kun; Li, Huan-Huan; Grünberg, Peter; Li, Qiang; Ye, Sheng-Tao; Tian, Yu-Feng; Yan, Shi-Shen; Lin, Zhao-Jun; Kang, Shi-Shou; Chen, Yan-Xue; Liu, Guo-Lei; Mei, Liang-Mo

    2015-09-01

    Magnetoresistance and rectification are two fundamental physical properties of heterojunctions and respectively have wide applications in spintronics devices. Being different from the well known various magnetoresistance effects, here we report a brand new large magnetoresistance that can be regarded as rectification magnetoresistance: the application of a pure small sinusoidal alternating-current to the nonmagnetic Al/Ge Schottky heterojunctions can generate a significant direct-current voltage, and this rectification voltage strongly varies with the external magnetic field. We find that the rectification magnetoresistance in Al/Ge Schottky heterojunctions is as large as 250% at room temperature, which is greatly enhanced as compared with the conventional magnetoresistance of 70%. The findings of rectification magnetoresistance open the way to the new nonmagnetic Ge-based spintronics devices of large rectification magnetoresistance at ambient temperature under the alternating-current due to the simultaneous implementation of the rectification and magnetoresistance in the same devices.

  2. New species of Cerambycinae from the Neotropical Region, and nomen novum for Anelaphus maculatus Galileo, Martins, and Santos-Silva, 2014 (Elaphidiini).

    PubMed

    Galileo, Maria Helena M; Martins, Ubirajara R; Santos-Silva, Antonio

    2015-01-01

    Six new species and one new genus are described: Criodion spinosum sp. nov. (Cerambycini), from Bolivia; Eburodacrys wappesi sp. nov. and Eburodacrys skillmani sp. nov. (Eburiini), from Bolivia; Eupempelus rileyorum sp. nov. (Heteropsini) from Panama; Sphalloeme mexicana sp. nov. (Oemini), from Mexico; Wappesoeme camiri sp. nov., new genus (Oemini), from Bolivia. Wappesoeme, Eburodacrys wappesi, E. skillmani, Eupempelus rileyorum, and Criodion spinosum are included in previously published keys. Anelaphus erakyra nomen novum for A. maculatus Galileo et al., 2014 is established. PMID:26250192

  3. New species of Cerambycinae from the Neotropical Region, and nomen novum for Anelaphus maculatus Galileo, Martins, and Santos-Silva, 2014 (Elaphidiini).

    PubMed

    Galileo, Maria Helena M; Martins, Ubirajara R; Santos-Silva, Antonio

    2015-07-17

    Six new species and one new genus are described: Criodion spinosum sp. nov. (Cerambycini), from Bolivia; Eburodacrys wappesi sp. nov. and Eburodacrys skillmani sp. nov. (Eburiini), from Bolivia; Eupempelus rileyorum sp. nov. (Heteropsini) from Panama; Sphalloeme mexicana sp. nov. (Oemini), from Mexico; Wappesoeme camiri sp. nov., new genus (Oemini), from Bolivia. Wappesoeme, Eburodacrys wappesi, E. skillmani, Eupempelus rileyorum, and Criodion spinosum are included in previously published keys. Anelaphus erakyra nomen novum for A. maculatus Galileo et al., 2014 is established.

  4. AlSb/InAs/AlSb quantum wells

    NASA Technical Reports Server (NTRS)

    Kroemer, Herbert

    1990-01-01

    Researchers studied the InAs/AlSb system recently, obtaining 12nm wide quantum wells with room temperature mobilities up to 28,000 cm(exp 2)/V center dot S and low-temperature mobilities up to 325,000 cm(exp 2)/V center dot S, both at high electron sheet concentrations in the 10(exp 12)/cm(exp 2) range (corresponding to volume concentrations in the 10(exp 18)/cm(exp 2) range). These wells were not intentionally doped; the combination of high carrier concentrations and high mobilities suggest that the electrons are due to not-intentional modulation doping by an unknown donor in the AlSb barriers, presumably a stoichiometric defect, like an antisite donor. Inasmuch as not intentionally doped bulk AlSb is semi-insulating, the donor must be a deep one, being ionized only by draining into the even deeper InAs quantum well. The excellent transport properties are confirmed by other observations, like excellent quantum Hall effect data, and the successful use of the quantum wells as superconductive weak links between Nb electrodes, with unprecendentedly high critical current densities. The system is promising for future field effect transistors (FETs), but many processing problems must first be solved. Although the researchers have achieved FETs, the results so far have not been competitive with GaAs FETs.

  5. Identification of Candida albicans ALS2 and ALS4 and Localization of Als Proteins to the Fungal Cell Surface

    PubMed Central

    Hoyer, L. L.; Payne, T. L.; Hecht, J. E.

    1998-01-01

    Additional genes in the growing ALS family of Candida albicans were isolated by PCR screening of a genomic fosmid library with primers designed from the consensus tandem-repeat sequence of ALS1. This procedure yielded fosmids encoding ALS2 and ALS4. ALS2 and ALS4 conformed to the three-domain structure of ALS genes, which consists of a central domain of tandemly repeated copies of a 108-bp motif, an upstream domain of highly conserved sequences, and a domain of divergent sequences 3′ of the tandem repeats. Alignment of five predicted Als protein sequences indicated conservation of N- and C-terminal hydrophobic regions which have the hallmarks of secretory signal sequences and glycosylphosphatidylinositol addition sites, respectively. Heterologous expression of an N-terminal fragment of Als1p in Saccharomyces cerevisiae demonstrated function of the putative signal sequence with cleavage following Ala17. This signal sequence cleavage site was conserved in the four other Als proteins analyzed, suggesting identical processing of each protein. Primary-structure features of the five Als proteins suggested a cell-surface localization, which was confirmed by indirect immunofluorescence with an anti-Als antiserum. Staining was observed on mother yeasts and germ tubes, although the intensity of staining on the mother yeast decreased with elongation of the germ tube. Similar to other ALS genes, ALS2 and ALS4 were differentially regulated. ALS4 expression was correlated with the growth phase of the culture; ALS2 expression was not observed under many different in vitro growth conditions. The data presented here demonstrate that ALS genes encode cell-surface proteins and support the conclusion that the size and number of Als proteins on the C. albicans cell surface vary with strain and growth conditions. PMID:9765564

  6. Al-Anon and recovery.

    PubMed

    Cermak, T L

    1989-01-01

    The history of Al-Anon and its current demographics are reviewed. In order to understand 12-step recovery and psychotherapy for family members of alcoholics, the concept of codependence is defined with a set of diagnostic criteria consistent with the DSM-III-R definition of personality traits and disorders. At the core of codependence are denial and an unrealistic relationship to willpower. The therapeutic implications of considering codependence as a personality disorder are explored, as are the characteristics that make codependence unique among personality disorders: the central role of denial and the existence of a self-help organization to facilitate recovery. The dynamics of working the 12 steps on codependent characteristics are outlined. A synergistic relationship between psychotherapy and the 12 steps is described. Special attention is given the emergence of Al-Anon adult children of alcoholic meetings, and the future of codependence is discussed.

  7. Emerging mechanisms of molecular pathology in ALS.

    PubMed

    Peters, Owen M; Ghasemi, Mehdi; Brown, Robert H

    2015-05-01

    Amyotrophic lateral sclerosis (ALS) is a devastating degenerative disease characterized by progressive loss of motor neurons in the motor cortex, brainstem, and spinal cord. Although defined as a motor disorder, ALS can arise concurrently with frontotemporal lobal dementia (FTLD). ALS begins focally but disseminates to cause paralysis and death. About 10% of ALS cases are caused by gene mutations, and more than 40 ALS-associated genes have been identified. While important questions about the biology of this disease remain unanswered, investigations of ALS genes have delineated pathogenic roles for (a) perturbations in protein stability and degradation, (b) altered homeostasis of critical RNA- and DNA-binding proteins, (c) impaired cytoskeleton function, and (d) non-neuronal cells as modifiers of the ALS phenotype. The rapidity of progress in ALS genetics and the subsequent acquisition of insights into the molecular biology of these genes provide grounds for optimism that meaningful therapies for ALS are attainable. PMID:25932674

  8. Synthesis of AlN/Al Polycrystals along with Al Nanoparticles Using Thermal Plasma Route

    SciTech Connect

    Kanhe, Nilesh S.; Nawale, A. B.; Kulkarni, N. V.; Bhoraskar, S. V.; Mathe, V. L.; Das, A. K.

    2011-07-15

    This paper for the first time reports the (200) oriented growth of hexagonal Aluminum nitride crystals during synthesis of aluminum nanoparticles in dc transferred arc thermal plasma reactor by gas phase condensation in nitrogen plasma. The structural and morphological study of as synthesized AlN crystal and aluminium nanoparticles was done by using the x-ray diffraction method, scanning electron microscopy and transmission electron microscopy.

  9. Ab initio modeling of zincblende AlN layer in Al-AlN-TiN multilayers

    DOE PAGES

    Yadav, S. K.; Wang, J.; Liu, X. -Y.

    2016-06-13

    An unusual growth mechanism of metastable zincblende AlN thin film by diffusion of nitrogen atoms into Al lattice is established. Using first-principles density functional theory, we studied the possibility of thermodynamic stability of AlN as a zincblende phase due to epitaxial strains and interface effect, which fails to explain the formation of zincblende AlN. We then compared the formation energetics of rocksalt and zincblende AlN in fcc Al through direct diffusion of nitrogen atoms to Al octahedral and tetrahedral interstitials. Furthermore, the formation of a zincblende AlN thin film is determined to be a kinetically driven process, not a thermodynamicallymore » driven process.« less

  10. Localized electron states and phase separation at the LaAlO3/SrTiO3 interface

    NASA Astrophysics Data System (ADS)

    Satpathy, S.; Shanavas, K. V.

    2012-02-01

    Even though the 2D electron gas at the polar interfaces of LAO/STO has been studied extensively, an explanation for the observed magnetic centers or the coexistence of magnetism and superconductivity is still lacking. Earlier density-functional calculations have indicated the presence of multi-bands and two types of electrons at the interface [1]. Here we propose that a combination of lattice disorder, octahedral rotations, and Jahn-Teller distortion can lead to some of these electrons to be localized near the interface and form lattice polarons. Evidence for this is presented from detailed density-functional calculations, which indicate that the energy gain associated with JT distortion and impurity or disorder induced local potentials can offset the kinetic energy cost of localization. Our model studies [2] also show the possible existence of a phase separation, thereby providing a natural explanation for the coexistence of magnetism and superconductivity [3].[4pt] [1] Z. S. Popovi'c, S. Satpathy and R. M. Martin Phys. Rev. Lett., 101, 256801 (2008)[0pt] [2] B. R. K. Nanda and S. Satpathy Phys. Rev B, 83, 195114 (2011)[0pt] [3] L. Li et. al. Nature Physics, 7, 762 (2011); J. A. Bert et. al. ibid, 767 (2011);

  11. Friction Plug Weld Repair for the Space Shuttle External Tank

    NASA Technical Reports Server (NTRS)

    Hartley, Paula J.; McCool, A. (Technical Monitor)

    2000-01-01

    Lockheed Martin Space Systems, Michoud Operations in New Orleans, LA is the manufacturer of the External Fuel Tanks (ET) for the Space Transportation System (STS). The ET contains and delivers the propellants used by the Orbiters three main engines. Additionally, it also serves as the structural backbone for the Orbiter and the two Solid Rocket Boosters (SRB), which combined, constitute the STS. In 1994, NASA established that in order to launch the International Space Station, the performance of the STS must be improved. One option was to reduce the weight of the ET, which would enable sufficient increase in performance. With the development of the Weldalite(R) series of Al-Cu-Li alloys in the late 1980's, Lockheed Martin was postured to replace the current A12219 fuel tanks with the high strength, light weight A12195 alloy. With the use of A12195 and some component redesign, the weight of the Super Lightweight (SLWT) ET was reduced by approximately 7,000 pounds, which added as much capability to the Space Shuttle. Since June 1998, seven STS missions have been successful with the use of the SLWT ET's.

  12. Synthesis of Al-Al2O3 and Al-Aln Nanoparticle Composites Via Electric Explosion of Wires

    NASA Astrophysics Data System (ADS)

    Lerner, M. I.; Lozhkomoev, A. S.; Pervikov, A. V.; Bakina, O. V.

    2016-07-01

    Composite Al-Al2O3 and Al-AlN nanoparticles were synthesized via electric explosion of aluminum wires in an argon-oxygen gas mixture and in nitrogen. The parameters of electric explosion and gas medium affect the size and relative content of nitride and aluminum oxide in the nanoparticles. Processes of forming chemical compounds during aluminum oxidation at the contact surface between explosive products and gas and of nitrogen diffusions into the nanoparticles of the condensed phase are considered.

  13. NiAl-base composite containing high volume fraction of AlN for advanced engines

    NASA Technical Reports Server (NTRS)

    Hebsur, Mohan (Inventor); Whittenbeger, John D. (Inventor); Lowell, Carl F. (Inventor)

    1994-01-01

    A particulate reinforced NiAl-AlN composite alloy has a NiAl matrix and greater than about 13 volume percent fine particles of AlN within the matrix. The particles preferably have a diameter from about 15 nanometers to about 50 nanometers. The particulate reinforced NiAl-AlN composite alloy may be prepared by cryomilling prealloyed NiAl in liquid nitrogen using grinding media having a diameter of from about 2 to 6 mm at an impeller speed of from about 450 RPM to about 800 RPM. The cryomilling may be done for a duration of from about 4 hours to about 20 hours to obtain a cryomilled powder. The cryomilled powder may be consolidated to form the particulate reinforced NiAl-AlN composite alloy. The particulate reinforced alloy can further include a toughening alloy. The toughening alloy may include NiCrAlY, FeCrAlY, and FeAl.

  14. Reply to Pachai et al.

    PubMed

    Harrison, William J; Bex, Peter J

    2016-05-01

    Peripheral vision is fundamentally limited by the spacing between objects. When asked to report a target's identity, observers make erroneous reports that sometimes match the identity of a nearby distractor and sometimes match a combination of target and distractor features. The classification of these errors has previously been used to support competing 'substitution' [1] or 'averaging' [2] models of the phenomenon known as 'visual crowding'. We recently proposed a single model in which both classes of error occur because observers make their reports by sampling from a biologically-plausible population of weighted responses within a region of space around the target [3]. It is critical to note that there is no probabilistic substitution or averaging process in our model; instead, we argue that neither substitution nor averaging occur, but that these are misclassifications of the distribution of reports that emerge when a population response distribution is sampled. This is a fundamentally different way of thinking about crowding, and on this basis we claim to have provided a mechanism unifying categorically distinct perceptual errors. Our goal was not to model all crowding phenomena, such as the release from crowding when target and flanks differ in color or depth [4]. Pachai et al.[5] have suggested that our model is not unifying because it inaccurately predicts perceptual performance for a particular stimulus. Although we agree that our model does not predict their data, this specific demonstration overlooks the critical aspect of the model: perceptual reports are drawn from a weighted population code. We show that Pachai et al.'s [5] own data actually provide evidence for the population code we have described [3], and we suggest a biologically-plausible analysis of their stimuli that provides a computational basis for their 'grouping' account of crowding. PMID:27166690

  15. Reply to Pachai et al.

    PubMed

    Harrison, William J; Bex, Peter J

    2016-05-01

    Peripheral vision is fundamentally limited by the spacing between objects. When asked to report a target's identity, observers make erroneous reports that sometimes match the identity of a nearby distractor and sometimes match a combination of target and distractor features. The classification of these errors has previously been used to support competing 'substitution' [1] or 'averaging' [2] models of the phenomenon known as 'visual crowding'. We recently proposed a single model in which both classes of error occur because observers make their reports by sampling from a biologically-plausible population of weighted responses within a region of space around the target [3]. It is critical to note that there is no probabilistic substitution or averaging process in our model; instead, we argue that neither substitution nor averaging occur, but that these are misclassifications of the distribution of reports that emerge when a population response distribution is sampled. This is a fundamentally different way of thinking about crowding, and on this basis we claim to have provided a mechanism unifying categorically distinct perceptual errors. Our goal was not to model all crowding phenomena, such as the release from crowding when target and flanks differ in color or depth [4]. Pachai et al.[5] have suggested that our model is not unifying because it inaccurately predicts perceptual performance for a particular stimulus. Although we agree that our model does not predict their data, this specific demonstration overlooks the critical aspect of the model: perceptual reports are drawn from a weighted population code. We show that Pachai et al.'s [5] own data actually provide evidence for the population code we have described [3], and we suggest a biologically-plausible analysis of their stimuli that provides a computational basis for their 'grouping' account of crowding.

  16. Everyday Life with ALS: A Practical Guide

    MedlinePlus

    ... course of ALS. ALS also will require some adaptations to your environment, both for safety and to ... the way, Chapter 6 will include information on adaptations for computer access. Though the chapter is called “ ...

  17. The role of time delay in the modeling of fibrosis. Comment on "Towards a unified approach in the modeling of fibrosis: A review with research perspectives" by Martine Ben Amar and Carlo Bianca

    NASA Astrophysics Data System (ADS)

    Guerrini, Luca

    2016-07-01

    Martine Ben Amar and Carlo Bianca have written a valuable paper [1], which is a timely review of the different theoretical tools for the modeling of physiological and pathological fibrosis existing in the literature. The review [1] is written with clarity and in a simple way, which makes it understandable to a wide audience. The author presents an exhaustive exposition of the interplay between the different scholars which works in the modeling of fibrosis diseases and a survey of the main theoretical approaches, among others, ODE-based models, PDE-based models, models with internal structure, mechanics of continuum approach, agent-based models. A critical analysis discusses their applicability, including advantages and disadvantages.

  18. Effects of the Al content on pore structures of porous TieAl alloys

    SciTech Connect

    Jaing, Y; He, Y H; Xu, N P; Zou, J; Huang, B; Lui, C T

    2008-01-01

    Porous TieAl alloys with different nominal compositions were fabricated through a reactive synthesis of Ti and Al elemental powders. It has been found that the pore parameters vary with the Al contents, indicating that the nature of the pores can be manipulated through changing the Al contents. In addition, detailed structural characterizations showed that the fabricated porous TieAl alloys can have three crystalline phases (i.e., a2-Ti3Al, g-TiAl, and TiAl3) when using different compositions. The fundamental reasons behind these phenomena have been explored.

  19. Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns in the oceanic islands of the tropical southern Atlantic.

    PubMed

    Anker, Arthur; Tavares, Marcos

    2016-07-14

    The present study deals with shrimps of the family Alpheidae collected in the shallow waters around the remote Trindade & Martin Vaz Archipelago, situated 1200 km off the coast of Espírito Santo, Brazil. A few additional samples came from dredges on top of the seamounts of the Vitória-Trindade Seamount Chain. A total of 23 species in eight genera are reported, the vast majority representing new records for the area. One species is described as new, Synalpheus trinitatis sp. nov., based on the type material from Trindade Island. The new species clearly belongs to the Synalpheus brooksi Coutière, 1909 species complex, differing from all its other members by at least two morphological features. Four species represent new records for Brazil and the southwestern Atlantic: Alpheopsis aequalis Coutière, 1897 sensu lato, Alpheopsis chalciope de Man, 1910 sensu lato, Alpheus crockeri (Armstrong, 1941) and Prionalpheus gomezi Martínez-Iglesias & Carvacho, 1991; the two species of Alpheopsis are recorded from the Atlantic Ocean for the first time. The colour pattern of the recently described Alpheus rudolphi Almeida & Anker, 2011, a species endemic to Brazil, is shown for the first time and compared to the colour patterns of the four closely related species of the A. armatus Rathbun, 1901 complex from the Caribbean-Florida region. A brief zoogeographical analysis of the alpheid fauna of the oceanic islands of the tropical southern Atlantic (Trindade & Martin Vaz, Fernando de Noronha, Atol das Rocas, São Pedro & São Paulo, Ascension, Saint Helena, Cape Verde, São Tomé & Príncipe) is also provided.

  20. Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns in the oceanic islands of the tropical southern Atlantic.

    PubMed

    Anker, Arthur; Tavares, Marcos

    2016-01-01

    The present study deals with shrimps of the family Alpheidae collected in the shallow waters around the remote Trindade & Martin Vaz Archipelago, situated 1200 km off the coast of Espírito Santo, Brazil. A few additional samples came from dredges on top of the seamounts of the Vitória-Trindade Seamount Chain. A total of 23 species in eight genera are reported, the vast majority representing new records for the area. One species is described as new, Synalpheus trinitatis sp. nov., based on the type material from Trindade Island. The new species clearly belongs to the Synalpheus brooksi Coutière, 1909 species complex, differing from all its other members by at least two morphological features. Four species represent new records for Brazil and the southwestern Atlantic: Alpheopsis aequalis Coutière, 1897 sensu lato, Alpheopsis chalciope de Man, 1910 sensu lato, Alpheus crockeri (Armstrong, 1941) and Prionalpheus gomezi Martínez-Iglesias & Carvacho, 1991; the two species of Alpheopsis are recorded from the Atlantic Ocean for the first time. The colour pattern of the recently described Alpheus rudolphi Almeida & Anker, 2011, a species endemic to Brazil, is shown for the first time and compared to the colour patterns of the four closely related species of the A. armatus Rathbun, 1901 complex from the Caribbean-Florida region. A brief zoogeographical analysis of the alpheid fauna of the oceanic islands of the tropical southern Atlantic (Trindade & Martin Vaz, Fernando de Noronha, Atol das Rocas, São Pedro & São Paulo, Ascension, Saint Helena, Cape Verde, São Tomé & Príncipe) is also provided. PMID:27470751

  1. Nonstoichiometry of Al-Zr intermetallic phases

    SciTech Connect

    Radmilovic, V.; Thomas, G.

    1994-06-01

    Nonstoichiometry of metastable cubic {beta}{prime} and equilibrium tetragonal {beta} Al-Zr intermetallic phases of the nominal composition Al{sub 3}Zr in Al-rich alloys has been extensively studied. It is proposed that the ``dark contrast`` of {beta}{prime} core in {beta}{prime}/{sigma}{prime} complex precipitates, in Al-Li-Zr based alloys, is caused by incorporation of Al and Li atoms into the {beta}{prime} phase on Zr sublattice sites, forming nonstoichiometric Al-Zr intermetallic phases, rather than by Li partitioning only. {beta}{prime} particles contain very small amounts of Zr, approximately 5 at.%, much less than the stoichiometric 25 at.% in the Al{sub 3}Zr metastable phase. These particles are, according to simulation of high resolution images, of the Al{sub 3}(Al{sub 0.4}Li{sub 0.4}Zr{sub 0.2}) type. Nonstoichiometric particles of average composition Al{sub 4}Zr and Al{sub 6}Zr are observed also in the binary Al-Zr alloy, even after annealing for several hours at 600{degree}C.

  2. Cenomanian-Turonian biostratigraphy of the Jardas Al Abid area, Al Jabal Al Akhdar, northeast Libya

    NASA Astrophysics Data System (ADS)

    El Qot, Gamal M.; Abdulsamad, Esam O.

    2016-09-01

    The Upper Cenomanian-Turonian succession exposed at Jardas al'Abid area consists mainly of carbonates with siliciclastic intercalations. This succession is subdivided lithostratigraphically into: Qasr al'Abid (Late Cenomanian) and Al Baniyah (Late Cenomanian-Coniacian) formations. This sequence is relatively rich in macrofossil assemblages especially bivalves, gastropods, and echinoids with rare ammonites. Based on the first occurrence (FO) and last occurrence (LO) of some index species of these macrofossil groups, an integrated biostratigraphic framework has been constructed. The studied Cenomanian-Turonian sequence is subdivided biostratigraphically into three ammonite biozones; Pseudaspidoceras pseudonodosoides Total Range Zone, Choffaticeras segne Total Range Zone, and Coilopoceras requienianum Total Range Zone. Based on the rest of macrofossil assemblages other than the ammonites, eight biozones were recognized; Mecaster batnensis Total Range Zone, Ceratostreon flabellatum-Neithea dutrugei Acme Zone, Costagyra olisiponensis Acme Zone, Pycnodonte (Phygraea) vesicularis vesiculosa Acme Zone, Mytiloides labiatus Total Range Zone = Mecaster turonensis Acme Zone, Rachiosoma rectilineatum-Curvostrea rouvillei-Tylostoma (T.) globosum Assemblage Zone, Radiolites sp.-Apricardia? matheroni Total Range Zone, and Nerinea requieniana Total Range Zone. Most of the proposed biozones are recorded for the first time from Libya. The integration among these biozones as well as local and inter-regional correlation of the biozones have been discussed. The stage boundaries of the studied stratigraphic intervals are discussed, where the Cenomanian/Turonian boundary is delineated at the last occurrence (LO) of Pseudaspidoceras pseudonodosoides (Choffat), while the Turonian/Coniacian boundary is delineated arbitrary being agree with the LO of the Turonian fauna.

  3. Cyclic oxidation resistance of a reaction milled NiAl-AlN composite

    NASA Technical Reports Server (NTRS)

    Lowell, Carl E.; Barrett, Charles A.; Whittenberger, J. D.

    1990-01-01

    Based upon recent mechanical property tests a NiAl-AlN composite produced by cryomilling has very attractive high temperature strength. This paper focuses on the oxidation resistance of the NiAl-AlN composite at 1473 and 1573 K as compared to that of Ni-47Al-0.15Zr, one of the most oxidation resistant intermetallics. The results of cyclic oxidation tests show that the NiAl-AlN composite has excellent properties although not quite as good as those of Ni-47Al-0.15Zr. The onset of failure of the NiAl-AlN was unique in that it was not accompanied by a change in scale composition from alumina to less protective oxides. Failure in the composite appears to be related to the entrapment of AlN particles within the alumina scale.

  4. Wear behavior of Al-Al{sub 3}Ti composite manufactured by a centrifugal method

    SciTech Connect

    Watanabe, Yoshimi; Yamanaka, Noboru; Fukui, Yasuyoshi

    1999-12-01

    The purpose of the present study was to develop a wear-resistant, light Al-Al{sub 3}Ti composite material. An Al-Al{sub 3}Ti composite specimen was machined from a thick-walled tube of Al-Al{sub 3}Ti functionally graded material (FGM) manufactured by the centrifugal method from a commercial ingot of Al-5 mass% Ti master alloy. The alloy was heated to a temperature where solid Al{sub 3}Ti particles resided in a liquid Al matrix, and then the centrifugal method was carried out. Al{sub 3}Ti particles in a commercial alloy ingot exist as platelets, and this shape was maintained through the casting. Three kinds of wear specimens were prepared, taking into account the morphology of the Al{sub 3}Ti particles in the thick-walled FGM tube; the Al{sub 3}Ti particles were arranged with their platelet planes nearly normal to the radial direction as a result of the applied centrifugal force. The wear resistance of the Al-Al{sub 3}Ti composite was significantly higher than that of pure Al. Wear-resistance anisotropy and dissolution of the Al{sub 3}Ti into the Al matrix at the near-surface region, around 100 {micro}m in depth, were also observed. The mechanism of the supersaturated-layer formation and the origin of the anisotropic wear resistance are discussed.

  5. Systems Engineering Techniques for ALS Decision Making

    NASA Technical Reports Server (NTRS)

    Rodriquez, Luis F.; Drysdale, Alan E.; Jones, Harry; Levri, Julie A.

    2004-01-01

    The Advanced Life Support (ALS) Metric is the predominant tool for predicting the cost of ALS systems. Metric goals for the ALS Program are daunting, requiring a threefold increase in the ALS Metric by 2010. Confounding the problem, the rate new ALS technologies reach the maturity required for consideration in the ALS Metric and the rate at which new configurations are developed is slow, limiting the search space and potentially giving the perspective of a ALS technology, the ALS Metric may remain elusive. This paper is a sequel to a paper published in the proceedings of the 2003 ICES conference entitled, "Managing to the metric: an approach to optimizing life support costs." The conclusions of that paper state that the largest contributors to the ALS Metric should be targeted by ALS researchers and management for maximum metric reductions. Certainly, these areas potentially offer large potential benefits to future ALS missions; however, the ALS Metric is not the only decision-making tool available to the community. To facilitate decision-making within the ALS community a combination of metrics should be utilized, such as the Equivalent System Mass (ESM)-based ALS metric, but also those available through techniques such as life cycle costing and faithful consideration of the sensitivity of the assumed models and data. Often a lack of data is cited as the reason why these techniques are not considered for utilization. An existing database development effort within the ALS community, known as OPIS, may provide the opportunity to collect the necessary information to enable the proposed systems analyses. A review of these additional analysis techniques is provided, focusing on the data necessary to enable these. The discussion is concluded by proposing how the data may be utilized by analysts in the future.

  6. Instandhaltungsmanagement als Gestaltungsfeld Ganzheitlicher Produktionssysteme

    NASA Astrophysics Data System (ADS)

    Dombrowski, Uwe; Schulze, Sven; Otano, Isabel Crespo

    Sich kontinuierlich verändernde Rahmenbedingungen, wie beispielsweise eine steigende Variantenvielfalt, verkürzte Produktlebenszyklen sowie Kundenforderungen nach höherer Qualität, kürzeren Lieferzeiten und geringeren Kosten, fordern von produzierenden Unternehmen eine stetige Anpassung der Prozesse, der Organisation und der Strukturen. Seit den 90er Jahren versuchen immer mehr deutsche Unternehmen diesen veränderten Anforderungen mit der Einführung eines Ganzheitlichen Produktionssystems (GPS) zu begegnen. Ganzheitliche Produktionssysteme sind dabei in ihren Grundlagen an das Toyota Produktionssystem angelehnt, vereinigen aber auch weitere Methoden zu einem unternehmensspezifischen Regelwerk. Im Rahmen des langfristigen Trends zu unternehmensindividuellen Produktionssystemen wird sowohl in der Industrie als auch in der Forschung intensiv über das Toyota Produktionssystem, Lean Production, Lean Management und Ganzheitliche Produktionssysteme diskutiert, werden Konzepte zu Implementierung und Betrieb erstellt und die Wirtschaftlichkeit untersucht.

  7. Structure and stability of the AlX and AlX{sup {minus}} species

    SciTech Connect

    Gutsev, G.L.; Jena, P.; Bartlett, R.J.

    1999-02-01

    The electronic and geometrical structures of the ground and low-lying excited states of the diatomic AlX and AlX{sup {minus}} series (X=H, Li, Be, B, C, N, O, and F) are calculated by the coupled-cluster method with all singles and doubles and noniterative inclusion of triples using a large atomic natural orbital basis. All the ground-state AlX molecules except for AlF can attach an additional electron and form ground-state AlX{sup {minus}} anions. The ground-state AlBe{sup {minus}}, AlB{sup {minus}}, AlC{sup {minus}}, AlN{sup {minus}}, and AlO{sup {minus}} anions possess excited states that are stable toward autodetachment of an extra electron; AlBe{sup {minus}} also has a second excited state. Low-lying excited states of all AlX but AlN can attach an extra electron and form anionic states that are stable with respect to their neutral (excited) parent states. The ground-state AlLi{sup {minus}}, AlBe{sup {minus}}, AlB{sup {minus}}, AlN{sup {minus}}, and AlO{sup {minus}} anions are found to be thermodynamically more stable than their neutral parents. The most stable is AlO{sup {minus}}, whose dissociation energy to Al+O{sup {minus}} is 6.4 eV. Correspondingly, AlO possesses the largest electron affinity (2.65 eV) in the series. {copyright} {ital 1999 American Institute of Physics.}

  8. Accumulation of Al in Root Mucilage of an Al-Resistant and an Al-Sensitive Cultivar of Wheat.

    PubMed Central

    Archambault, D. J.; Zhang, G.; Taylor, G. J.

    1996-01-01

    To estimate rates of Al accumulation within the symplasm, all apoplastic pools of Al need to be eliminated or accounted for. We have developed a revised kinetic protocol that allows us to estimate the contribution of mucilage-bound Al to total, nonexchangeable Al, and to eliminate the mucilage as an apoplastic pool of Al. By comparing the Al content of excised root tips (2 cm) of wheat (Triticum aestivum L.) with and without the removal of the mucilage (using a 10-min wash in 1 M NH4Cl), we found that Al bound to the mucilage accounted for approximately 25 to 35% of Al remaining after desorption in citric acid. The kinetics of Al uptake into mucilage were biphasic, with a rapid phase occurring in the first 30 min of uptake, followed by a linear phase occurring in the remainder of the experimental period (180 min). By adopting a step for removal of mucilage into our existing kinetic protocol, we have been able to isolate a linear phase of uptake with only a slight deviation from linearity in the first 5 min. Although we cannot unambiguously identify this phase of uptake as uptake into the symplasm, we believe this new protocol provides us with the most accurate quantitative estimate of symplastic Al yet available. PMID:12226458

  9. Magnetism of Al-substituted magnetite reduced from Al-hematite

    NASA Astrophysics Data System (ADS)

    Jiang, Zhaoxia; Liu, Qingsong; Zhao, Xiang; Roberts, Andrew P.; Heslop, David; Barrón, Vidal; Torrent, José

    2016-06-01

    Aluminum-substituted magnetite (Al-magnetite) reduced from Al-substituted hematite or goethite (Al-hematite or Al-goethite) is an environmentally important constituent of magnetically enhanced soils. In order to characterize the magnetic properties of Al-magnetite, two series of Al-magnetite samples were synthesized through reduction of Al-hematite by a mixed gas (80% CO2 and 20% CO) at 395°C for 72 h in a quartz tube furnace. Al-magnetite samples inherited the morphology of their parent Al-hematite samples, but only those transformed from Al-hematite synthesized at low temperature possessed surficial micropores, which originated from the release of structural water during heating. Surface micropores could thus serve as a practical fingerprint of fire or other high-temperature mineralogical alteration processes in natural environments, e.g., shear friction in seismic zones. In addition, Al substitution greatly affects the magnetic properties of Al-magnetite. For example, coercivity (Bc) increases with increasing Al content and then decreases slightly, while the saturation magnetization (Ms), Curie temperature (Tc), and Verwey transition temperature (Tv) all decrease with increasing Al content due to crystal defect formation and dilution of magnetic ions caused by Al incorporation. Moreover, different trends in the correlation between Tc and Bc can be used to discriminate titanomagnetite from Al-magnetite, which is likely to be important in environmental and paleomagnetic studies, particularly in soil.

  10. Reactive Plasma Spraying of Fine Al2O3/AlN Feedstock Powder

    NASA Astrophysics Data System (ADS)

    Shahien, Mohammed; Yamada, Motohiro; Yasui, Toshiaki; Fukumoto, Masahiro

    2013-12-01

    Reactive plasma spraying (RPS) is a promising technology for in situ formation of aluminum nitride (AlN) coatings. Recently, AlN-based coatings were fabricated by RPS of alumina (Al2O3) powder in N2/H2 thermal plasma. This study investigated the feasibility of RPS of a fine Al2O3/AlN mixture and the influence of the plasma gases (N2, H2) on the nitriding conversion, and coating microstructure and properties. Thick AlN/Al2O3 coatings with high nitride content were successfully fabricated. The coatings consist of h-AlN, c-AlN, Al5O6N, γ-Al2O3, and a small amount of α-Al2O3. Use of fine particles enhanced the nitriding conversion and the melting tendency by increasing the surface area. Furthermore, the AlN additive improved the AlN content in the coatings. Increasing the N2 gas flow rate improved the nitride content and complete crystal growth to the h-AlN phase, and enhanced the coating thickness. On the other hand, though the H2 gas is required for plasma nitriding of the Al2O3 particles, increasing its flow rate decreased the nitride content and the coating thickness. Remarkable influence of the plasma gases on the coating composition, microstructure, and properties was observed during RPS of the fine particles.

  11. 77 FR 73732 - In the Matter of Amendment of the Designation of al-Qa'ida in Iraq, aka Jam'at al Tawhid wa'al...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-11

    ... al-Rafidayn, aka The Organization of al-Jihad's Base of Operations in Iraq, aka al-Qaida of Jihad in Iraq, aka al-Qaida in Iraq, aka al-Qaida in Mesopotamia, aka al-Qaida in the Land of the Two Rivers, aka al-Qaida of the Jihad in the Land of the Two Rivers, aka al-Qaida of Jihad Organization in......

  12. Liquid oxygen LOX compatibility evaluations of aluminum lithium (Al-Li) alloys: Investigation of the Alcoa 2090 and MMC weldalite 049 alloys

    NASA Technical Reports Server (NTRS)

    Diwan, Ravinder M.

    1989-01-01

    The behavior of liquid oxygen (LOX) compatibility of aluminum lithium (Al-Li) alloys is investigated. Alloy systems of Alcoa 2090, vintages 1 to 3, and of Martin Marietta Corporation (MMC) Weldalite 049 were evaluated for their behavior related to the LOX compatibility employing liquid oxygen impact test conditions under ambient pressures and up to 1000 psi. The developments of these aluminum lithium alloys are of critical and significant interest because of their lower densities and higher specific strengths and improved mechanical properties at cryogenic temperatures. Of the different LOX impact tests carried out at the Marshall Space Flight Center (MSFC), it is seen that in certain test conditions at higher pressures, not all Al-Li alloys are LOX compatible. In case of any reactivity, it appears that lithium makes the material more sensitive at grain boundaries due to microstructural inhomogeneities and associated precipitate free zones (PFZ). The objectives were to identify and rationalize the microstructural mechanisms that could be relaxed to LOX compatibility behavior of the alloy system in consideration. The LOX compatibility behavior of Al-Li 2090 and Weldalite 049 is analyzed in detail using microstructural characterization techniques with light optical metallography, scanning electron microscopy (SEM), electron microprobe analysis, and surface studies using secondary ion mass spectrometry (SIMS), electron spectroscopy in chemical analysis (ESCA) and Auger electron spectroscopy (AES). Differences in the behavior of these aluminum lithium alloys are assessed and related to their chemistry, heat treatment conditions, and microstructural effects.

  13. A comparison of mechanical properties between Al and Al3Mg

    NASA Astrophysics Data System (ADS)

    Yang, Rong; Tang, Bin; Gao, Tao

    2016-11-01

    On the basis of first principles calculations, we have calculated the elastic properties, stress-strain relations, ideal tensile strengths, ideal shear strengths, and the ideal compressed strengths of Al and Al3Mg. The stress-strain relations of Al3Mg are strikingly similar to those of Al, indicating that the crystal structure appears to be more important than the identity of the individual atoms during uniaxial deformation. Al3Mg is found to have larger moduli and higher strengths than Al but less ductile than Al. So Al3Mg is expected to be a harder material, consistent with its exploitation in Al precipitate-hardening mechanisms. The calculated elastic properties, tensile strengths and shear strengths of Al are consistent with experimental values or previous theoretical results. We also use another method (molecular dynamics (MD) simulations) to recalculate elastic constants, ideal tensile and compressed strength of Al3Mg for checking and comparing. We find that the results obtained by the two methods agree well with each other. The failure modes under uniaxial <100> tension are also explored for Al and Al3Mg. Our calculations confirm that Al fail by shear and predict that Al3Mg also fail by shear.

  14. Influences of Al particles on the microstructure and property of electrodeposited Ni-Al composite coatings

    NASA Astrophysics Data System (ADS)

    Cai, Fei; Jiang, Chuanhai

    2014-02-01

    Ni-Al composite coatings with different contents of Al microparticles were prepared from a conventional Watt bath. The influences of Al particle loadings in the bath on the surface morphology, composition, texture, grain size, microstrain, residual stress and anti-corrosion of the Ni-Al composite coating were investigated. The friction coefficients of the coatings at 200 °C were also evaluated by a pin-on-disctribometer. The results showed that the surface morphology of the coatings changed from pyramid + colonied structure to colonied structure with increasing Al particle loadings. The (2 0 0) preferred orientation for pure Ni coating evolved to random orientation with increasing Al particle loadings. The grain size obtained the minimum value of 72.28 nm at Al particle loading of 100 g/L and the microstrain of the coating increased with increasing the Al particle loadings. The incorporation of Al particles decreased the residual stress of the electro-deposited coating and all the coatings deposited at different Al particle loadings possessed low residual stress. As the Al particle loading increased, the anti-corrosion of the Ni-Al coatings increased owing to the combined effect of increasing Al content in the coatings and the texture evolution from (2 0 0) plane to (1 1 1) plane. The wear result suggested that the increasing Al particle content did not improve the wear performance of the Ni-Al composite coatings.

  15. Interfacial phenomena in the reactions of Al-B, Al-Ti-B, and Al-Zr-B alloys with KF-AlF{sub 3} and NaF-AlF{sub 3} melts

    SciTech Connect

    Lee, M.S.; Terry, B.S.; Grieveson, P.

    1993-12-01

    The interfacial phenomena occurring during the contacting of liquid Al-B, Al-Ti-B, and Al-Zr-B melts with KF-AlF{sub 3} liquid fluxes have been investigated by optical examination of quenched metal drops previously immersed in the liquid fluxes. Reactions in the Al-B/KF-AlF{sub 3} system involve the formation of metastable AlB{sub 12} at the metal/flux interface. At high KBF{sub 4} levels in the flux, the AlB{sub 12} is dispersed in the flux and also at low KBF{sub 4} levels in the metal. Reactions in the Al-Ti-B/KF-AlF{sub 3} system involve the formation of TiB{sub 2}, which may be dispersed in either the metal or the flux depending upon the composition of the flux. The results obtained for the Al-Ti-B/NaF-AlF{sub 3} and Al-Zr-B/KF-AlF{sub 3} systems were similar to those observed for the Al-Ti-B/KF-AlF{sub 3} system.

  16. Self-Consistent Scattering and Transport Calculations

    NASA Astrophysics Data System (ADS)

    Hansen, S. B.; Grabowski, P. E.

    2015-11-01

    An average-atom model with ion correlations provides a compact and complete description of atomic-scale physics in dense, finite-temperature plasmas. The self-consistent ionic and electronic distributions from the model enable calculation of x-ray scattering signals and conductivities for material across a wide range of temperatures and densities. We propose a definition for the bound electronic states that ensures smooth behavior of these measurable properties under pressure ionization and compare the predictions of this model with those of less consistent models for Be, C, Al, and Fe. SNL is a multi-program laboratory managed and operated by Sandia Corp., a wholly owned subsidiary of Lockheed Martin Corp, for the U.S. DoE NNSA under contract DE-AC04-94AL85000. This work was supported by DoE OFES Early Career grant FWP-14-017426.

  17. Correlation between heavy-hole and light-hole Mahan Excitons in a two-dimensional electron gas

    NASA Astrophysics Data System (ADS)

    Paul, J.; Dey, P.; Stevens, C. E.; Tokumoto, T.; Reno, J. L.; Hilton, D. J.; Karaiskaj, D.; D. J. Hilton Collaboration; J. L. Reno Collaboration

    2015-03-01

    We present the coherent two-dimensional Fourier transform (2DFT) spectra of Mahan Excitons associated with the heavy-hole and light-hole resonances observed in a modulation doped GaAs/AlGaAs single quantum well. These resonances are observed to be strongly coupled through many-body interactions. The 2DFT spectra were measured using co-linear, cross-linear, and co-circular polarizations and reveal striking differences. This work was performed, in part, at the Center for Integrated Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy Sciences user facility. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under Contract No. DE-AC04-94AL85000. NSF, Division of Materials Research under Grant Number: DMR-1409473.

  18. Growth and Stress-induced Transformation of Zinc blende AlN Layers in Al-AlN-TiN Multilayers

    PubMed Central

    Li, Nan; Yadav, Satyesh K.; Wang, Jian; Liu, Xiang-Yang; Misra, Amit

    2015-01-01

    AlN nanolayers in sputter deposited {111}Al/AlN/TiN multilayers exhibit the metastable zinc-blende-structure (z-AlN). Based on density function theory calculations, the growth of the z-AlN is ascribed to the kinetically and energetically favored nitridation of the deposited aluminium layer. In situ nanoindentation of the as-deposited {111}Al/AlN/TiN multilayers in a high-resolution transmission electron microscope revealed the z-AlN to wurzite AlN phase transformation through collective glide of Shockley partial dislocations on every two {111} planes of the z-AlN. PMID:26681109

  19. Growth and stress-induced transformation of zinc blende AlN layers in Al-AlN-TiN multilayers

    DOE PAGES

    Li, Nan; Yadav, Satyesh K.; Wang, Jian; Liu, Xiang -Yang; Misra, Amit

    2015-12-18

    We report that AlN nanolayers in sputter deposited {111}Al/AlN/TiN multilayers exhibit the metastable zinc-blende-structure (z-AlN). Based on density function theory calculations, the growth of the z-AlN is ascribed to the kinetically and energetically favored nitridation of the deposited aluminium layer. In situ nanoindentation of the as-deposited {111}Al/AlN/TiN multilayers in a high-resolution transmission electron microscope revealed the z-AlN to wurzite AlN phase transformation through collective glide of Shockley partial dislocations on every two {111} planes of the z-AlN.

  20. Mechanical alloying of nb-al powders

    NASA Astrophysics Data System (ADS)

    Peng, Zhixue; Suryanarayana, C.; Froes, F. H. (Sam)

    1996-01-01

    The effect of mechanical alloying (MA) on solid solubility extension, nanostructure formation, amorphization, intermetallic compound formation, and the occurrence of a face-centered cubic (fcc) phase in the Nb-Al system has been studied. Solid solubility extension was observed in both the terminal compositions and intermetallic compounds: 15 pct Nb in Al and 60 pct Al in Nb, well beyond the equilibrium and even rapid solidification levels (2.4 pct Nb and 25 pct Al, respectively) and increased homogeneity range for the NbAl3 phase. Nanostructured grains formed in all compositions. In the central part of the phase diagram, amorphization occurred predominantly. Only NbAl3, the most stable intermetallic, formed during MA; in most cases, a subsequent anneal was required. On long milling time, an fcc phase, probably a nitride, formed as a result of contamination from the ambient atmosphere.

  1. Mechanical alloying of Nb-Al powders

    SciTech Connect

    Peng, Z.; Suryanarayana, C.; Froes, F.H.

    1996-01-01

    The effect of mechanical alloying (MA) on solid solubility extension, nanostructure formation, amorphization, intermetallic compound formation, and the occurrence of a face-centered cubic (fcc) phase in the Nb-Al system has been studied. Solid solubility extension was observed in both the terminal compositions and intermetallic compounds: 15 pct Nb in Al and 60 pct Al in Nb, well beyond the equilibrium and even rapid solidification levels (2.4 pct Nb and 25 pct Al, respectively) and increased homogeneity range for the NbAl{sub 3} phase. Nanostructured grains formed in all compositions. In the central part of the phase diagram, amorphization occurred predominantly. Only NbAl{sub 3}, the most stable intermetallic, formed during MA; in most cases, a subsequent anneal was required. On long milling time, an fcc phase, probably a nitride, formed as a result of contamination from the ambient atmosphere.

  2. Orientation relationship of eutectoid FeAl and FeAl2

    PubMed Central

    Scherf, A.; Kauffmann, A.; Kauffmann-Weiss, S.; Scherer, T.; Li, X.; Stein, F.; Heilmaier, M.

    2016-01-01

    Fe–Al alloys in the aluminium range of 55–65 at.% exhibit a lamellar microstructure of B2-ordered FeAl and triclinic FeAl2, which is caused by a eutectoid decomposition of the high-temperature Fe5Al8 phase, the so-called ∊ phase. The orientation relationship of FeAl and FeAl2 has previously been studied by Bastin et al. [J. Cryst. Growth (1978 ▸), 43, 745] and Hirata et al. [Philos. Mag. Lett. (2008 ▸), 88, 491]. Since both results are based on different crystallographic data regarding FeAl2, the data are re-evaluated with respect to a recent re-determination of the FeAl2 phase provided by Chumak et al. [Acta Cryst. (2010 ▸), C66, i87]. It is found that both orientation relationships match subsequent to a rotation operation of 180° about a 〈112〉 crystallographic axis of FeAl or by applying the inversion symmetry of the FeAl2 crystal structure as suggested by the Chumak data set. Experimental evidence for the validity of the previously determined orientation relationships was found in as-cast fully lamellar material (random texture) as well as directionally solidified material (∼〈110〉FeAl || solidification direction) by means of orientation imaging microscopy and global texture measurements. In addition, a preferential interface between FeAl and FeAl2 was identified by means of trace analyses using cross sectioning with a focused ion beam. On the basis of these habit planes the orientation relationship between the two phases can be described by (01)FeAl || (114) and [111]FeAl || [10]. There is no evidence for twinning within FeAl lamellae or alternating orientations of FeAl lamellae. Based on the determined orientation and interface data, an atomistic model of the structure relationship of Fe5Al8, FeAl and FeAl2 in the vicinity of the eutectoid decomposition is derived. This model is analysed with respect to the strain which has to be accommodated at the interface of FeAl and FeAl2. PMID:27047304

  3. A New Phase in ALS Research.

    PubMed

    Chong, P Andrew; Forman-Kay, Julie D

    2016-09-01

    In this issue of Structure, Conicella et al. (2016) present evidence that the low complexity C-terminal region of TDP-43 undergoes liquid-liquid phase separation. ALS-associated mutations alter this phase separation process, providing a possible mechanism for the pathology caused by these TDP-43 mutations. The work is strongly supportive of toxic loss of RNA processing function in ALS. PMID:27602988

  4. Tensile Behavior of Al2o3/feal + B and Al2o3/fecraly Composites

    NASA Technical Reports Server (NTRS)

    Draper, S. L.; Eldridge, J. I.; Aiken, B. J. M.

    1995-01-01

    The feasibility of Al2O3/FeAl + B and Al2O3/FeCrAlY composites for high-temperature applications was assessed. The major emphasis was on tensile behavior of both the monolithics and composites from 298 to 1100 K. However, the study also included determining the chemical compatibility of the composites, measuring the interfacial shear strengths, and investigating the effect of processing on the strength of the single-crystal Al2O3 fibers. The interfacial shear strengths were low for Al203/FeAl + B and moderate to high for Al203/FeCrAlY. The difference in interfacial bond strengths between the two systems affected the tensile behavior of the composites. The strength of the Al203 fiber was significantly degraded after composite processing for both composite systems and resulted in poor composite tensile properties. The ultimate tensile strength (UTS) values of the composites could generally be predicted with either rule of mixtures (ROM) calculations or existing models when using the strength of the etched-out fiber. The Al2O3/FeAl + B composite system was determined to be unfeasible due to poor interfacial shear strengths and a large mismatch in coefficient of thermal expansion (CTE). Development of the Al2O3/FeCrAlY system would require an effective diffusion barrier to minimize the fiber strength degradation during processing and elevated temperature service.

  5. Memory deficits and retrieval processes in ALS.

    PubMed

    Mantovan, M C; Baggio, L; Dalla Barba, G; Smith, P; Pegoraro, E; Soraru', G; Bonometto, P; Angelini, C

    2003-05-01

    Subtle neuropsychological deficits have been described in patients affected by amyotrophic lateral sclerosis (ALS) without dementia. Overall, selective impairment in memory function has been reported, but the source of memory impairment in ALS has yet to be defined. We performed neuropsychological screening in 20 ALS patients. Semantic encoding and post-encoding cue effects on the retrieval of word lists were investigated in the ALS patients and normal controls. Severity of memory impairment was correlated to cerebral blood perfusion detected by single photon emission computed tomography (SPECT). ALS patients showed moderate impairments in frontal and memory tests. Short-term memory was normal, while serial position retrieval of word lists with normal recency effect but poor primacy effect showed long-term memory deficit. ALS patients performed better in cued encoding than in cued post-encoding recall condition. In the cued post-encoding condition, the primacy effect in word list recall improved significantly in controls, but not in ALS patients, as compared with both the free recall and cued encoding conditions. SPECT hypoperfusion was observed in frontal and temporal areas in ALS patients. ALS patients showed a long-term memory deficit which did not improve in cued post-encoding condition as it does for controls. We hypothesize abnormal retrieval processes related to frontal lobe dysfunction which entails difficulties in generating stable long-memory traces at encoding.

  6. Memory deficits and retrieval processes in ALS.

    PubMed

    Mantovan, M C; Baggio, L; Dalla Barba, G; Smith, P; Pegoraro, E; Soraru', G; Bonometto, P; Angelini, C

    2003-05-01

    Subtle neuropsychological deficits have been described in patients affected by amyotrophic lateral sclerosis (ALS) without dementia. Overall, selective impairment in memory function has been reported, but the source of memory impairment in ALS has yet to be defined. We performed neuropsychological screening in 20 ALS patients. Semantic encoding and post-encoding cue effects on the retrieval of word lists were investigated in the ALS patients and normal controls. Severity of memory impairment was correlated to cerebral blood perfusion detected by single photon emission computed tomography (SPECT). ALS patients showed moderate impairments in frontal and memory tests. Short-term memory was normal, while serial position retrieval of word lists with normal recency effect but poor primacy effect showed long-term memory deficit. ALS patients performed better in cued encoding than in cued post-encoding recall condition. In the cued post-encoding condition, the primacy effect in word list recall improved significantly in controls, but not in ALS patients, as compared with both the free recall and cued encoding conditions. SPECT hypoperfusion was observed in frontal and temporal areas in ALS patients. ALS patients showed a long-term memory deficit which did not improve in cued post-encoding condition as it does for controls. We hypothesize abnormal retrieval processes related to frontal lobe dysfunction which entails difficulties in generating stable long-memory traces at encoding. PMID:12752394

  7. Genetics of Familial and Sporadic ALS

    ClinicalTrials.gov

    2016-03-21

    Amyotrophic Lateral Sclerosis (ALS); Familial Amyotrophic Lateral Sclerosis; Amyotrophic Lateral Sclerosis With Frontotemporal Dementia; Lou Gehrig's Disease; Motor Neuron Disease; Primary Lateral Sclerosis

  8. Superbend era begins swiftly at the ALS

    SciTech Connect

    Robinson, Art; Tamura, Lori

    2001-11-29

    The successful installation and commissioning of high-field superconducting bend magnets (superbends) in three curved sectors of ALS storage ring was the first time the magnet lattice of an operating synchrotron light source has been retrofitted in this fundamental way. As a result, the ALS now offers an expanded spectral range well into the hard x-ray region without compromising either the number of undulators or their high brightness in the soft x-ray region for which the ALS design was originally optimized. In sum, when the superbend-enhanced ALS started up for user operations in October 2001, it marked the beginning of a new era in its history.

  9. Effects of the Al content on pore structures of porous TieAl alloys

    SciTech Connect

    Jiang, Y; He, Y H; Zou, J; Huang, B; Liu, C

    2008-01-01

    PorousTi Alalloys with different nominal compositions were fabricated through a reactive synthesis of Ti and Al elemental powders. It has been found that the pore parameters vary with the Al contents, indicating that the nature of the pores can be manipulated through changing the Al contents. In addition, detailed structural characterizations showed that the fabricated porousTi Alalloys can have three crystalline phases (i.e., 2-Ti3Al, -TiAl, and TiAl3) when using different compositions. The fundamental reasons behind these phenomena have been explored.

  10. Response to Signorovitch et al.

    PubMed

    Flot, Jean-François; Debortoli, Nicolas; Hallet, Bernard; Van Doninck, Karine

    2016-08-22

    Signorovitch et al.[1] comment that an Oenothera-like meiosis [2] could produce a pattern similar to what we observed in our study of natural isolates of the bdelloid rotifer Adineta vaga, which we attributed to horizontal gene transfers (HGTs) [3]. Indeed, our HGT hypothesis appears at first sight difficult to conciliate with their observation of a congruent pattern of allele sharing at four large loci possibly located on different chromosomes [4]. However, one might imagine conditions under which massive horizontal gene transfer between bdelloid individuals could produce such a pattern, notably if the individuals involved had previously lost most of their heterozygosity because of their exposure to frequent desiccation (which produces DNA double-strand breaks [5]). In the published A. vaga genome the loss of heterozygosity due to large-scale gene conversion events or break-induced replication covers only about 10% of the genome [6], but this percentage may be much higher in environmental isolates that often experience dessication. Besides, if an Oenothera-like mode of meiosis occurs in bdelloids frequently enough to be detected in a single sampling of 29 individuals (as in [4]), one would expect males and meiosis to be observed at least occasionally, and instances of congruent allele sharing across loci should turn up frequently in genetic surveys. This was not the case in [3]: among the 82 A. vaga individuals sequenced for four nuclear markers, no trio of individuals presented congruent patterns of shared sequences at different loci. For these reasons, and in the absence of any direct evidence for an Oenothera-like meiosis in bdelloids, we still consider inter-bdelloid HGTs a more parsimonious explanation for our results. PMID:27554651

  11. Atomic structure and oxygen deficiency of the ultrathin aluminium oxide barrier in Al/AlOx/Al Josephson junctions

    NASA Astrophysics Data System (ADS)

    Zeng, Lunjie; Tran, Dung Trung; Tai, Cheuk-Wai; Svensson, Gunnar; Olsson, Eva

    2016-07-01

    Al/AlOx/Al Josephson junctions are the building blocks of a wide range of superconducting quantum devices that are key elements for quantum computers, extremely sensitive magnetometers and radiation detectors. The properties of the junctions and the superconducting quantum devices are determined by the atomic structure of the tunnel barrier. The nanoscale dimension and disordered nature of the barrier oxide have been challenges for the direct experimental investigation of the atomic structure of the tunnel barrier. Here we show that the miniaturized dimension of the barrier and the interfacial interaction between crystalline Al and amorphous AlOx give rise to oxygen deficiency at the metal/oxide interfaces. In the interior of the barrier, the oxide resembles the atomic structure of bulk aluminium oxide. Atomic defects such as oxygen vacancies at the interfaces can be the origin of the two-level systems and contribute to decoherence and noise in superconducting quantum circuits.

  12. Strengthening of Al and Al-Mg alloy wires by melt inoculation with Al/MgB2 nanocomposite

    NASA Astrophysics Data System (ADS)

    Florián-Algarín, David; Marrero, Raúl; Padilla, Alexandra; Suárez, Oscar Marcelo

    2015-12-01

    This study hinges on the feasibility of strengthening Al and Al-Mg wires by adding Al nanocomposite pellets containing MgB2 nanoparticles into the melt upon fabrication. These MgB2 nanoparticles were obtained by fragmentation using a high-energy ball mill, and were, afterward, mechanically alloyed with pure aluminum. The resulting MgB2/Al nanocomposite pellets were sintered at 260°C to be subsequently added into molten aluminum and an Al-Mg alloy melt. Cold rolling intercalated with stepwise annealing allowed the fabrication of 1 mm diameter wires with a final area reduction of 96%. Mechanical and physical properties of the treated wire specimens were compared to those of similarly processed pure aluminum wire. The ultimate tensile strength of the treated wires increased approximately double fold with respect to untreated wires at the expense of some loss in electrical conductivity.

  13. Atomic structure and oxygen deficiency of the ultrathin aluminium oxide barrier in Al/AlOx/Al Josephson junctions.

    PubMed

    Zeng, Lunjie; Tran, Dung Trung; Tai, Cheuk-Wai; Svensson, Gunnar; Olsson, Eva

    2016-01-01

    Al/AlOx/Al Josephson junctions are the building blocks of a wide range of superconducting quantum devices that are key elements for quantum computers, extremely sensitive magnetometers and radiation detectors. The properties of the junctions and the superconducting quantum devices are determined by the atomic structure of the tunnel barrier. The nanoscale dimension and disordered nature of the barrier oxide have been challenges for the direct experimental investigation of the atomic structure of the tunnel barrier. Here we show that the miniaturized dimension of the barrier and the interfacial interaction between crystalline Al and amorphous AlOx give rise to oxygen deficiency at the metal/oxide interfaces. In the interior of the barrier, the oxide resembles the atomic structure of bulk aluminium oxide. Atomic defects such as oxygen vacancies at the interfaces can be the origin of the two-level systems and contribute to decoherence and noise in superconducting quantum circuits. PMID:27403611

  14. Atomic structure and oxygen deficiency of the ultrathin aluminium oxide barrier in Al/AlOx/Al Josephson junctions

    PubMed Central

    Zeng, Lunjie; Tran, Dung Trung; Tai, Cheuk-Wai; Svensson, Gunnar; Olsson, Eva

    2016-01-01

    Al/AlOx/Al Josephson junctions are the building blocks of a wide range of superconducting quantum devices that are key elements for quantum computers, extremely sensitive magnetometers and radiation detectors. The properties of the junctions and the superconducting quantum devices are determined by the atomic structure of the tunnel barrier. The nanoscale dimension and disordered nature of the barrier oxide have been challenges for the direct experimental investigation of the atomic structure of the tunnel barrier. Here we show that the miniaturized dimension of the barrier and the interfacial interaction between crystalline Al and amorphous AlOx give rise to oxygen deficiency at the metal/oxide interfaces. In the interior of the barrier, the oxide resembles the atomic structure of bulk aluminium oxide. Atomic defects such as oxygen vacancies at the interfaces can be the origin of the two-level systems and contribute to decoherence and noise in superconducting quantum circuits. PMID:27403611

  15. Atomic structure and oxygen deficiency of the ultrathin aluminium oxide barrier in Al/AlOx/Al Josephson junctions.

    PubMed

    Zeng, Lunjie; Tran, Dung Trung; Tai, Cheuk-Wai; Svensson, Gunnar; Olsson, Eva

    2016-07-12

    Al/AlOx/Al Josephson junctions are the building blocks of a wide range of superconducting quantum devices that are key elements for quantum computers, extremely sensitive magnetometers and radiation detectors. The properties of the junctions and the superconducting quantum devices are determined by the atomic structure of the tunnel barrier. The nanoscale dimension and disordered nature of the barrier oxide have been challenges for the direct experimental investigation of the atomic structure of the tunnel barrier. Here we show that the miniaturized dimension of the barrier and the interfacial interaction between crystalline Al and amorphous AlOx give rise to oxygen deficiency at the metal/oxide interfaces. In the interior of the barrier, the oxide resembles the atomic structure of bulk aluminium oxide. Atomic defects such as oxygen vacancies at the interfaces can be the origin of the two-level systems and contribute to decoherence and noise in superconducting quantum circuits.

  16. Influence of AlN thickness on AlGaN epilayer grown by MOCVD

    NASA Astrophysics Data System (ADS)

    Jayasakthi, M.; Juillaguet, S.; Peyre, H.; Konczewicz, L.; Baskar, K.; Contreras, S.

    2016-10-01

    AlGaN/AlN layers were grown by metalorganic chemical vapor deposition (MOCVD) on sapphire substrates. The AlN buffer thickness was varied from 400 nm to 800 nm. The AlGaN layer thickness was 1000 nm. The crystalline quality, thickness and composition of AlGaN were determined using high resolution X-ray diffraction (HRXRD). The threading dislocation density (TDD) was found to decrease with increase of AlN layer thickness. Reciprocal space mapping (RSM) was used to estimate the strain and relaxation between AlGaN and AlN. The optical properties of AlGaN layers were investigated by temperature dependent photoluminescence (PL). PL intensities of AlGaN layers increases with increasing the AlN thickness. The surface morphology of AlGaN was studied by atomic force microscopy (AFM). Root mean square (RMS) roughness values were found to be decreased while increase of AlN thickness.

  17. Diana Al-Hadid: Identity and Heritage

    ERIC Educational Resources Information Center

    Jungerberg, Tom; Smith, Anna; Borsh, Colleen

    2012-01-01

    Diana Al-Hadid's sculptures reflect the many locations, cultures, histories, and mythologies that have shaped her as an artist. In large-scale works which have the appearance of architectural ruins, Al-Hadid employs imagery drawn from many diverse interests including science and technology, history, and literature. She also incorporates images and…

  18. Quantitatively Probing the Al Distribution in Zeolites

    SciTech Connect

    Vjunov, Aleksei; Fulton, John L.; Huthwelker, Thomas; Pin, Sonia; Mei, Donghai; Schenter, Gregory K.; Govind, Niranjan; Camaioni, Donald M.; Hu, Jian Z.; Lercher, Johannes A.

    2014-06-11

    The degree of substitution of Si4+ by Al3+ in the oxygen-terminated tetrahedra (Al T-sites) of zeolites determines the concentration of ion-exchange and Brønsted acid sites. As the location of the tetrahedra and the associated subtle variations in bond angles influence the acid strength, quantitative information about Al T-sites in the framework is critical to rationalize catalytic properties and to design new catalysts. A quantitative analysis is reported that uses a combination of extended X-ray absorption fine structure (EXAFS) analysis and 27Al MAS NMR spectroscopy supported by DFT-based molecular dynamics simulations. To discriminate individual Al atoms, sets of ab initio EXAFS spectra for various T-sites are generated from DFT-based molecular dynamics simulations allowing quantitative treatment of the EXAFS single- and multiple-photoelectron scattering processes out to 3-4 atom shells surrounding the Al absorption center. It is observed that identical zeolite types show dramatically different Al-distributions. A preference of Al for T-sites that are part of one or more 4-member rings in the framework over those T-sites that are part of only 5- and 6-member rings in the HBEA150 sample has been determined from a combination of these methods. This work was supported by the U. S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences.

  19. Durability Assessment of TiAl Alloys

    NASA Technical Reports Server (NTRS)

    Draper, Susan L.; Lerch, Bradley A.

    2008-01-01

    The durability of TiAl is a prime concern for the implementation of TiAl into aerospace engines. Two durability issues, the effect of high temperature exposure on mechanical properties and impact resistance, have been investigated and the results are summarized in this paper. Exposure to elevated temperatures has been shown to be detrimental to the room temperature ductility of gamma alloys with the most likely mechanisms being the ingress of interstitials from the surface. Fluorine ion implantation has been shown to improve the oxidation resistance of gamma alloys, and ideally it could also improve the environmental embrittlement of high Nb content TiAl alloys. The effect of F ion implantation on the surface oxidation and embrittlement of a third generation, high Nb content TiAl alloy (Ti-45Al-5Nb-B-C) were investigated. Additionally, the ballistic impact resistance of a variety of gamma alloys, including Ti-48Al-2Cr- 2Nb, Ti-47Al-2Cr-2Nb, ABB-2, ABB-23, NCG359E, 95A and Ti-45Al-5Nb-B-C was accessed. Differences in the ballistic impact properties of the various alloys will be discussed, particularly with respect to their manufacturing process, microstructure, and tensile properties.

  20. Energetics of Al13 Keggin cluster compounds

    PubMed Central

    Armstrong, Christopher R.; Casey, William H.; Navrotsky, Alexandra

    2011-01-01

    The ϵ-Al13 Keggin aluminum hydroxide clusters are essential models in establishing molecular pathways for geochemical reactions. Enthalpies of formation are reported for two salts of aluminum centered ϵ-Keggin clusters, Al13 selenate, (Na(AlO4)Al12(OH)24(SeO4)4•12H2O) and Al13 sulfate, (NaAlO4Al12(OH)24(SO4)4•12H2O). The measured enthalpies of solution, ΔHsol, at 28 °C in 5 N HCl for the ε-Al13 selenate and sulfate are −924.57 (± 3.83) and −944.30 ( ± 5.66) kJ·mol-1, respectively. The enthalpies of formation from the elements, ΔHf,el, for Al13 selenate and sulfate are −19,656.35 ( ± 67.30) kJ·mol-1, and −20,892.39 ( ± 70.01) kJ·mol-1, respectively. In addition, ΔHf,el for sodium selenate decahydrate was calculated using data from high temperature oxide melt solution calorimetry measurements: −4,006.39 ( ± 11.91) kJ·mol-1. The formation of both ε-Al13 Keggin cluster compounds is exothermic from oxide-based components but energetically unfavorable with respect to a gibbsite-based assemblage. To understand the relative affinity of the ϵ-Keggin clusters for selenate and sulfate, the enthalpy associated with two S-Se exchange reactions was calculated. In the solid state, selenium is favored in the Al13 compound relative to the binary chalcogenate, while in 5 N HCl, sulfur is energetically favored in the cluster compound compared to the aqueous solution. This contribution represents the first thermodynamic study of ε-Al13 cluster compounds and establishes a method for other such molecules, including the substituted versions that have been created for kinetic studies. Underscoring the importance of ε-Al13 clusters in natural and anthropogenic systems, these data provide conclusive thermodynamic evidence that the Al13 Keggin cluster is a crucial intermediate species in the formation pathway from aqueous aluminum monomers to aluminum hydroxide precipitates. PMID:21852572