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  • 1
    Electronic Resource
    Electronic Resource
    Micropreparative system for enrichment of capillary GC effluents (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 322-327 
    Details
    ISSN: 0935-6304
    Keywords: Preparative capillary GC ; Multidimensional GC ; Capillary techniques ; Enrichment ; Trace analysis ; Thermal desorption ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An automated system for preparative gas chromatography with capillary columns is described. The effluet from the capillary column is switched to the FID detector or to the traps by means of a Live-T switching device. The pneumatics is controlled by a microprocessor so that repetitive sampling can be performed over a period of days in order to enrich sufficient amount of material for NMR or other spectroscopic methods. The effluent containing the compounds is collected in glass tubes filled with column packing material (e.g. Chromosorb coated with 3% OV - 101, crosslinked). The trap temperatue can be adjusted from + 20°C to - 80°C, depending on the trapping material and volatility of trapped substances. The analysis of enriched substances or chromatographic fractions can be performed by thermal desorption of the same traps or by solven elution. The recovery of enriched substances is higher than 90%. High capacity and resolution for enrichment of trace components are obtained with the aid of a double column-double oven system. Examples of such applications are given.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240110405
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    Paper (German National Licenses)
    Fulltext
  • 2
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    World-wide interactive access to scientific databases via satellite and terrestrial data network (1990)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: In order to demonstrate the possibilities for scientific networking and data transfer, a first temporary satellite network link was installed between Czecholovakia and the European space operations center in Darmstadt, during the meeting of the inter-agency consultative group for space science in Prague. Several experiments to show interactive nature of the facility and the capability of the system were carried out, and it was proven that, despite the temporary nature of the installation, the planned demonstrations could be conducted in real time. Demonstrations included electronic mail message, orbit prediction and solar X-ray data. The results of the experiment provided insight into possibilities of data exchange.
    Keywords: DOCUMENTATION AND INFORMATION SCIENCE
    Type: ESA Bulletin (ISSN 0376-4265); 61, Fe; 63-69
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    A distributed clients/distributed servers model for STARCAT (1992)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: STARCAT, the Space Telescope ARchive and CATalogue user interface has been along for a number of years already. During this time it has been enhanced and augmented in a number of different fields. This time, we would like to dwell on a new capability allowing geographically distributed user interfaces to connect to geographically distributed data servers. This new concept permits users anywhere on the internet running STARCAT on their local hardware to access e.g., whichever of the 3 existing HST archive sites is available, or get information on the CFHT archive through a transparent connection to the CADC in BC or to get the La Silla weather by connecting to the ESO database in Munich during the same session. Similarly PreView (or quick look) images and spectra will also flow directly to the user from wherever it is available. Moving towards an 'X'-based STARCAT is another goal being pursued: a graphic/image server and a help/doc server are currently being added to it. They should further enhance the user independence and access transparency.
    Keywords: DOCUMENTATION AND INFORMATION SCIENCE
    Type: NASA, Washington, Second Annual Conference on Astronomical Data Analysis Software and Systems. Abstracts; p 38
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Archiving data from ground-based telescopes (1992)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The scientific throughput of a particular observing facility has been demonstrated to be multiplied with the operation of a data archive and its corresponding retrieval system. A requisite to achieve such an exploitation is a well structured observations catalog, i.e. a catalog that includes all information necessary to reduce and analyze the data even many years after its acquisition. At the same time, an information system is required that allow users to browse through the catalog at different levels of detail, adapting the amount of information presented to the actual needs of the user. Archiving data acquired with ground-based telescopes is particularly difficult because of the relative short life-time of instruments and detectors in comparison to the expected life-time of the archive. This feature differentiates ground-based originated archives radically from its spaceborne counterparts. The organization of the observations catalog becomes highly dependent on the capability of the archive to deal with new instrumental configurations. We introduce in this paper, the concept of a catalog database as opposed to the static catalog design currently in use in many archiving facilities, as a method to deal with this problem. We also present a brief review of activities currently in progress in this area.
    Keywords: DOCUMENTATION AND INFORMATION SCIENCE
    Type: NASA, Washington, Second Annual Conference on Astronomical Data Analysis Software and Systems. Abstracts; p 11
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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