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  • Other Sources  (5,908)
  • Earth Resources and Remote Sensing  (1,434)
  • Astronomy  (1,413)
  • Fluid Mechanics and Thermodynamics  (1,184)
  • Computer Programming and Software  (1,145)
  • Environment Pollution  (732)
  • 2000-2004  (5,908)
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  • 1
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    Minnowbrook III: 2000 Workshop on Boundary Layer Transition and Unsteady Aspects of Turbomachinery Flows (2002)
    In:  CASI
    Details
    Publication Date: 2019-08-31
    Description: This volume and its accompanying CD-ROM contain materials presented at the Minnowbrook III-2000 Workshop on Boundary Layer Transition and Unsteady Aspects of Turbomachinery Flows held at the Syracuse University Minnowbrook Conference Center, Blue Mountain Lake, New York, August 20-23, 2000. Workshop organizers were John E. LaGraff (Syracuse University), Terry V Jones (Oxford University), and J. Paul Gostelow (University of Leicester). The workshop followed the theme, venue, and informal format of two earlier workshops: Minnowbrook I (1993) and Minnowbrook II (1997). The workshop was focused on physical understanding the late stage (final breakdown) boundary layer transition, separation, and effects of unsteady wakes with the specific goal of contributing to engineering application of improving design codes for turbomachinery. The workshop participants included academic researchers from the USA and abroad, and representatives from the gas-turbine industry and government laboratories. The physical mechanisms discussed included turbulence disturbance environment in turbomachinery, flow instabilities, bypass and natural transition, turbulent spots and calmed regions, wake interactions with attached and separated boundary layers, turbulence and transition modeling and CFD, and DNS. This volume contains abstracts and copies of the viewgraphs presented, organized according to the workshop sessions. The viewgraphs are included on the CD-ROM only. The workshop summary and the plenary-discussion transcripts clearly highlight the need for continued vigorous research in the technologically important area of transition, separated and unsteady flows in turbomachines.
    Keywords: Fluid Mechanics and Thermodynamics
    Type: NASA/CP-2001-210888 , E-12764 , NAS 1.55:210888 , NONP-NASA-CD-2002101352 , Minnowbrook III; Aug 20, 2000 - Aug 23, 2000; Blue Mountain Lake, NY; United States
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  • 2
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    Toward Creating A Global Retrospective Climatology of Aerosol Properties (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Tropospheric aerosols are thought to cause a significant direct and indirect climate forcing, but the magnitude of this forcing remains highly uncertain because of poor knowledge of global aerosol characteristics and their temporal changes. The standard long-term global product, the one-channel Advanced Very-High-Resolution Radiometer (AVHRR) aerosol optical thickness over the ocean, relies on a single predefined aerosol model and can be inaccurate in many cases. Furthermore, it provides no information on aerosol column number density, thus making it impossible to estimate the indirect aerosol effect on climate. Total Ozone Mapping Spectrometer (TOMS) data can be used to detect absorbing aerosols over land, but are insensitive to aerosols located below one kilometer. It is thus clear that innovative approaches must be employed in order to extract a more quantitative and accurate aerosol climatology from available satellite and other measurements, thus enabling more reliable estimates of the direct and indirect aerosol forcings. The Global Aerosol Climatology Project (GACP) was established in 1998 as part of the Global Energy and Water Cycle Experiment (GEWEX). Its main objective is to analyze satellite radiance measurements and field observations to infer the global distribution of aerosols, their properties, and their seasonal and interannual variations. The overall goal is to develop advanced global aerosol climatologies for the period of satellite data and to make the aerosol climatologies broadly available through the GACP web site.
    Keywords: Environment Pollution
    Type: IRS 2000; Jul 24, 2000 - Jul 29, 2000; Saint Petersburg; Russia
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  • 3
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    A Unified Satellite-Observation Polar Stratospheric Cloud (PSC) Database for Long-Term Climate-Change Studies (2000)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: This report summarizes the project team's activity and accomplishments during the period 12 February, 1999 - 12 February, 2000. The primary objective of this project was to create and test a generic algorithm for detecting polar stratospheric clouds (PSC), an algorithm that would permit creation of a unified, long term PSC database from a variety of solar occultation instruments that measure aerosol extinction near 1000 nm The second objective was to make a database of PSC observations and certain relevant related datasets. In this report we describe the algorithm, the data we are making available, and user access options. The remainder of this document provides the details of the algorithm and the database offering.
    Keywords: Environment Pollution
    Type: Rept-5098-04
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  • 4
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    Space Commercial Opportunities for Fluid Physics and Transport Phenomena Applications (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Microgravity research at NASA has been an undertaking that has included both science and commercial approaches since the late 80s and early 90s. The Fluid Physics and Transport Phenomena community has been developed, through NASA's science grants, into a valuable base of expertise in microgravity science. This was achieved through both ground and flight scientific research. Commercial microgravity research has been primarily promoted thorough NASA sponsored Centers for Space Commercialization which develop cost sharing partnerships with industry. As an example, the Center for Advanced Microgravity Materials Processing (CAMMP)at Northeastern University has been working with cost sharing industry partners in developing Zeolites and zeo-type materials as an efficient storage medium for hydrogen fuel. Greater commercial interest is emerging. The U.S. Congress has passed the Commercial Space Act of 1998 to encourage the development of a commercial space industry in the United States. The Act has provisions for the commercialization of the International Space Station (ISS). Increased efforts have been made by NASA to enable industrial ventures on-board the ISS. A Web site has been established at http://commercial/nasa/gov which includes two important special announcements. One is an open request for entrepreneurial offers related to the commercial development and use of the ISS. The second is a price structure and schedule for U.S. resources and accommodations. The purpose of the presentation is to make the Fluid Physics and Transport Phenomena community, which understands the importance of microgravity experimentation, aware of important aspects of ISS commercial development. It is a desire that this awareness will be translated into a recognition of Fluid Physics and Transport Phenomena application opportunities coordinated through the broad contacts of this community with industry.
    Keywords: Fluid Mechanics and Thermodynamics
    Type: Proceedings of the Fifth Microgravity Fluid Physics and Transport Phenomena Conference; 1972
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  • 5
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    Heat pipe systems using new working fluids (2004)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The performance of a heat pipe system is greatly improved by the use of a dilute aqueous solution of about 0.0005 and about 0.005 moles per liter of a long chain alcohol as the working fluid. The surface tension-temperature gradient of the long-chain alcohol solutions turns positive as the temperature exceeds a certain value, for example about 40.degree. C. for n-heptanol solutions. Consequently, the Marangoni effect does not impede, but rather aids in bubble departure from the heating surface. Thus, the bubble size at departure is substantially reduced at higher frequencies and, therefore, increases the boiling limit of heat pipes. This feature is useful in microgravity conditions. In addition to microgravity applications, the heat pipe system may be used for commercial, residential and vehicular air conditioning systems, micro heat pipes for electronic devices, refrigeration and heat exchangers, and chemistry and cryogenics.
    Keywords: Fluid Mechanics and Thermodynamics
    Format: application/pdf
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  • 6
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    [New Retrieval Algorithms for Geophysical Products from GLI and MODIS Data] (2004)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Below is the 1st year progress report for NAG5-13435 "New Retrieval Algorithms for Geophysical Products from GLI and MODIS Data". Activity on this project has been coordinated with our NASA DB project NAG5-9604. For your convenience, this report has six sections and an Appendix. Sections I - III discuss specific activities undertaken during the past year to analyze/use MODIS data. Section IV formally states our intention to no longer pursue any research using JAXA's (formerly NASDA's) GLI instrument which catastrophically failed very early after launch (also see the Appendix). Section V provides some indications of directions for second year activities based on our January 2004 telephone discussions and email exchanges. A brief summary is given in Section VI.
    Keywords: Earth Resources and Remote Sensing
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  • 7
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    Meshing, Visualization, and Computational Environments (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: There was probably no higher profile application of meshing, visualization, and computational software this past year than that performed in support of the space shuttle's Return to Flight activities. After heavy use of simulation during the accident investigation, these same tools are now helping address safety and operational issues. In turn, these applications are raising the bar for computational tools in terms of simulation fidelity and turnaround time.
    Keywords: Computer Programming and Software
    Type: Aerospace America; 42; 12; 75
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  • 8
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    The Lunar L1 Gateway Concept: Supporting Future Major Space Science Facilities (2004)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: We report here on a series of ongoing studies to evaluate alternative architectures for future space science facilities and how robots, humans, and autonomous systems might be optimally used to support them. This presentation outlines one scenario -- a "Gateway" at the Earth-Moon L1 point for supporting multiple options beyond Low Earth Orbit -- plus our process for evaluating human/robotic activities to construct telescopes.
    Keywords: Computer Programming and Software
    Type: New Concepts for Far-Infrared and Submillimeter Space Astronomy; 259-263; NASA/CP-2003-212233
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  • 9
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    Software Past, Present, and Future: Views from Government, Industry and Academia (2000)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Views from the NASA CIO NASA Software Engineering Workshop on software development from the past, present, and future are presented. The topics include: 1) Software Past; 2) Software Present; 3) NASA's Largest Software Challenges; 4) 8330 Software Projects in Industry Standish Groups 1994 Report; 5) Software Future; 6) Capability Maturity Model (CMM): Software Engineering Institute (SEI) levels; 7) System Engineering Quality Also Part of the Problem; 8) University Environment Trends Will Increase the Problem in Software Engineering; and 9) NASA Software Engineering Goals.
    Keywords: Computer Programming and Software
    Type: Proceedings of the Twenty-Fourth Annual Software Engineering Workshop; NASA/CP-2000-209890
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  • 10
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    Earth Observations (2000)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: This document is concentrates on a couple of the missions where the Spacelab hardware was used to do Earth science. The Atmospheric Laboratory for Applications and Science (ATLAS) series of missions and the Lidar in-Space Technology Experiment (LITE) mission, the ATLAS being a series of three Shuttle missions that were very much Spacelab missions, are described. A little bit about the history, what the missions were, some of the instruments that were on them, and results are given.
    Keywords: Earth Resources and Remote Sensing
    Type: The Spacelab Accomplishments Forum; 67-90; NASA/CP-2000-210332
    Format: text
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