ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Astrophysics  (10)
  • Computer Programming and Software  (5)
  • *Energy-Generating Resources  (4)
  • 2005-2009  (19)
  • 1
    facet.materialart.
    Unknown
    Carbon-negative biofuels from low-input high-diversity grassland biomass (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-12-13
    Description: Biofuels derived from low-input high-diversity (LIHD) mixtures of native grassland perennials can provide more usable energy, greater greenhouse gas reductions, and less agrichemical pollution per hectare than can corn grain ethanol or soybean biodiesel. High-diversity grasslands had increasingly higher bioenergy yields that were 238% greater than monoculture yields after a decade. LIHD biofuels are carbon negative because net ecosystem carbon dioxide sequestration (4.4 megagram hectare(-1) year(-1) of carbon dioxide in soil and roots) exceeds fossil carbon dioxide release during biofuel production (0.32 megagram hectare(-1) year(-1)). Moreover, LIHD biofuels can be produced on agriculturally degraded lands and thus need to neither displace food production nor cause loss of biodiversity via habitat destruction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tilman, David -- Hill, Jason -- Lehman, Clarence -- New York, N.Y. -- Science. 2006 Dec 8;314(5805):1598-600.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN 55108, USA. tilman@umn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17158327" target="_blank"〉PubMed〈/a〉
    Keywords: Agriculture ; Atmosphere ; *Biodiversity ; *Biomass ; *Carbon/analysis ; Carbon Dioxide/analysis/metabolism ; Ecosystem ; *Energy-Generating Resources ; Fabaceae/growth & development/metabolism ; Greenhouse Effect ; Plant Development ; Plant Roots/chemistry ; *Plants/metabolism ; *Poaceae/growth & development/metabolism ; Soil/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    Land clearing and the biofuel carbon debt (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-02-09
    Description: Increasing energy use, climate change, and carbon dioxide (CO2) emissions from fossil fuels make switching to low-carbon fuels a high priority. Biofuels are a potential low-carbon energy source, but whether biofuels offer carbon savings depends on how they are produced. Converting rainforests, peatlands, savannas, or grasslands to produce food crop-based biofuels in Brazil, Southeast Asia, and the United States creates a "biofuel carbon debt" by releasing 17 to 420 times more CO2 than the annual greenhouse gas (GHG) reductions that these biofuels would provide by displacing fossil fuels. In contrast, biofuels made from waste biomass or from biomass grown on degraded and abandoned agricultural lands planted with perennials incur little or no carbon debt and can offer immediate and sustained GHG advantages.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fargione, Joseph -- Hill, Jason -- Tilman, David -- Polasky, Stephen -- Hawthorne, Peter -- New York, N.Y. -- Science. 2008 Feb 29;319(5867):1235-8. doi: 10.1126/science.1152747. Epub 2008 Feb 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Nature Conservancy, 1101 West River Parkway, Suite 200, Minneapolis, MN 55415, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18258862" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomass ; Brazil ; Carbon ; *Carbon Dioxide/metabolism ; Crops, Agricultural ; *Ecosystem ; *Energy-Generating Resources ; Greenhouse Effect ; Indonesia ; Malaysia ; Plant Development ; *Plants/metabolism ; *Soil ; Time Factors ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    Energy. Driving on biomass (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-05-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ohlrogge, John -- Allen, Doug -- Berguson, Bill -- Dellapenna, Dean -- Shachar-Hill, Yair -- Stymne, Sten -- New York, N.Y. -- Science. 2009 May 22;324(5930):1019-20. doi: 10.1126/science.1171740.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biology and Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA. ohlrogge@msu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19460990" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomass ; *Electricity ; *Energy-Generating Resources ; Ethanol ; Gasoline ; *Lignin ; *Motor Vehicles ; Petroleum ; Research
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Energy. Beneficial biofuels--the food, energy, and environment trilemma (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-07-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tilman, David -- Socolow, Robert -- Foley, Jonathan A -- Hill, Jason -- Larson, Eric -- Lynd, Lee -- Pacala, Stephen -- Reilly, John -- Searchinger, Tim -- Somerville, Chris -- Williams, Robert -- New York, N.Y. -- Science. 2009 Jul 17;325(5938):270-1. doi: 10.1126/science.1177970.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN 55108, USA. tilman@umn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19608900" target="_blank"〉PubMed〈/a〉
    Keywords: Biomass ; Crops, Agricultural ; Ecosystem ; *Energy-Generating Resources ; *Environment ; *Food ; *Industrial Waste ; Plants ; Politics ; Public Policy ; Trees ; Waste Products ; Wood
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    The 55Fe X-ray Energy Response of Mercury Cadmium Telluride Near-Infrared Detector Arrays (2009)
    In:  CASI
    Details
    Publication Date: 2018-09-11
    Description: A technique involving Fe-55 X-rays provides a straightforward method to measure the response of a detector. The detector's response can lead directly to a calculation of the conversion gain (e(-) ADU(-1) ), as well as aid detector design and performance studies. We calibrate the Fe-15 X-ray energy response and pair production energy of HgCdTe using 8 HST WFC3 1.7 micron flight grade detectors. The results show that each Ka X-ray generates 2273 +/- 137 electrons, which corresponds to a pair-production energy of 2.61 +/- 0.16 eV. The uncertainties are dominated by our knowledge of the conversion gain. In future studies, we plan to eliminate this uncertainty by directly measuring conversion gain at very low light levels.
    Keywords: Astrophysics
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unknown
    Five-Year Wilkinson Microwave Anisotropy Probe (WMAP)Observations: Beam Maps and Window Functions (2008)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: Cosmology and other scientific results from the WMAP mission require an accurate knowledge of the beam patterns in flight. While the degree of beam knowledge for the WMAP one-year and three-year results was unprecedented for a CMB experiment, we have significantly improved the beam determination as part of the five-year data release. Physical optics fits are done on both the A and the B sides for the first time. The cutoff scale of the fitted distortions on the primary mirror is reduced by a factor of approximately 2 from previous analyses. These changes enable an improvement in the hybridization of Jupiter data with beam models, which is optimized with respect to error in the main beam solid angle. An increase in main-beam solid angle of approximately 1% is found for the V2 and W1-W4 differencing assemblies. Although the five-year results are statistically consistent with previous ones, the errors in the five-year beam transfer functions are reduced by a factor of approximately 2 as compared to the three-year analysis. We present radiometry of the planet Jupiter as a test of the beam consistency and as a calibration standard; for an individual differencing assembly. errors in the measured disk temperature are approximately 0.5%.
    Keywords: Astrophysics
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 7
    facet.materialart.
    Unknown
    Virtual Energetic Particle Observatory (VEPO) (2008)
    In:  Other Sources
    Details
    Publication Date: 2019-07-19
    Description: The Virtual Energetic Particle Observatory (VEPO) focuses on improved discovery, access, and usability of heliospheric energetic particle and ancillary data products from selected spacecraft and sub-orbital instruments of the heliophysics data environment. The energy range of interest extends over the full range of particle acceleration from keV energies of suprathermal seed particles to GeV energies of galactic cosmic ray particles. Present spatial coverage is for operational and legacy spacecraft operating from the inner to the outer heliosphere, e.g. from measurements by the two Helios spacecraft to 0.3 AU to the inner heliosheath region now being traversed by the two Voyager spacecraft. This coverage will eventually be extended inward to ten solar radii by the planned NASA solar probe mission and at the same time beyond the heliopause into the outer heliosheath by continued Voyager operations. The geospace fleet of spacecraft providing near-Earth interplanetary measurements, selected magnetospheric spacecraft providing direct measurements of penetrating interplanetary energetic particles, and interplanetary cruise measurements from planetary spacecraft missions further extend VEPO resources to the domain of geospace and planetary interactions. Ground-based (e.g., neutron monitor) and high-altitude suborbital measurements can expand coverage to the highest energies of galactic cosmic rays affected by heliospheric interaction and of solar energetic particles. Science applications include investigation of solar flare and coronal mass ejection events. acceleration and transport of interplanetary particles within the inner heliosphere, cosmic ray interactions with planetary surfaces and atmospheres, sources of suprathermal and anomalous cosmic ray ions in the outer heliosphere, and solar cycle modulation of galactic cosmic rays. Robotic and human exploration, and eventual habitation, of planetary and space environments beyond the Earth require knowledge of radiation hazards informed by VEPO data resources. The VEPO project has completed the first year of work to define science requirements, to document and register selected data products in SPASE format while evolving SPASE for increased applicability to VEPO data, and to support enhanced discovery and access for these products through the evolving data query and middleware system of the Virtual Heliospheric Observatory (VHO). The VEPO team operates as a heliophysics focus group for energetic particle data resources in partnership with VHO and also leverages existing data services of NASA's Space Physics Data Facility. We invite comments from the U.S. and international data provider and user communities on review of the current VEPO/VHO user interface, on directions for future evolution of VEPO and supporting data systems including VHO and SPDF, and on relations to other elements of the heliophysics virtual observatory environment.
    Keywords: Astrophysics
    Type: 2008 Fall American Geophysical Union Meeting; Dec 13, 2008 - Dec 21, 2008; San Francisco, CA; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 8
    facet.materialart.
    Unknown
    Impact of Universal Plasma and Energetic Particle Processes on Icy Bodies of the Kuiper Belt and the Oort Cloud (2008)
    In:  Other Sources
    Details
    Publication Date: 2019-07-19
    Description: Modeling of space plasma and energetic particle interactions with icy bodies of the outer solar system is simplified when there is commonality of the underlying source, acceleration, and transport processes in spatially distinct regions from the supersonic heliosphere through the heliosheath into the local interstellar medium (LISM). Current trends in the Voyager heliosheath measurements suggest strong commonality to processes in the LISM. The Fisk-Gloeckler "universal" spectrum at suprathermal energies apparently plays a strong role in coupling the plasma and high energy particle regimes in the spatial and energetic transitions from the outer heliosphere to the LISM. Dominant processes in consecutive energy regimes project to varying effects versus irradiation depth on exposed upper surfaces of airless small icy bodies and to upper atmospheres of larger bodies such as Titan and Pluto. Relative absence of the universal suprathermal spectrum in the mid-heliospheric region of the classical Kuiper Belt may profoundly affect surface color diversity of icy bodies in this region.
    Keywords: Astrophysics
    Type: Chapman Conference on Universal Heliophysical Proceses; Nov 10, 2008 - Nov 14, 2008; Savannah, GA; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 9
    facet.materialart.
    Unknown
    A Software Safety Risk Taxonomy for Use in Retrospective Safety Cases (2007)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: KSC-2007-045 , 31st Annual Software Engineering Workshop; Mar 06, 2007 - Mar 08, 2007; Baltimore, MD; United States|3rd IEEE Systems and Software Week (SASW2007); Mar 06, 2007 - Mar 08, 2007; Baltimore, MD; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 10
    facet.materialart.
    Unknown
    Traceability of Software Safety Requirements in Legacy Safety Critical Systems (2007)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: How can traceability of software safety requirements be created for legacy safety critical systems? Requirements in safety standards are imposed most times during contract negotiations. On the other hand, there are instances where safety standards are levied on legacy safety critical systems, some of which may be considered for reuse for new applications. Safety standards often specify that software development documentation include process-oriented and technical safety requirements, and also require that system and software safety analyses are performed supporting technical safety requirements implementation. So what can be done if the requisite documents for establishing and maintaining safety requirements traceability are not available?
    Keywords: Computer Programming and Software
    Type: KSC-2007-052 , Traceability of Software Safety Requirements in Legacy Safety Critical Systems (TEFSE/GCT''07; Mar 22, 2007 - Mar 23, 2007; Lexington, KY; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...