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  • EARTH RESOURCES AND REMOTE SENSING  (140)
  • Analytical Chemistry and Spectroscopy  (103)
  • METEOROLOGY AND CLIMATOLOGY  (60)
  • INSTRUMENTATION AND PHOTOGRAPHY  (51)
  • 1995-1999
  • 1980-1984  (354)
  • 1982  (354)
Sammlung
Schlagwörter
Verlag/Herausgeber
Erscheinungszeitraum
  • 1995-1999
  • 1980-1984  (354)
Jahr
  • 11
    Digitale Medien
    Digitale Medien
    Half-chair conformations of unsaturated heterocyclic compounds (1982)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 18 (1982), S. 92-97 
    Details
    ISSN: 0030-4921
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The vicinal proton coupling constants were obtained for some 6-membered ring unsaturated heterocyclic compounds. The R values and ring dihedral angles were determined and found to be consistent with half-chair conformations. Relative to saturated heterocyclic compounds, the effect of the sulfur atom on ring puckering was attenuated. However, an increase in ring puckering resulted from the sulfone group and was attributed to torsional energy.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/mrc.1270180210
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 12
    Digitale Medien
    Digitale Medien
    The use of triple quadrupoles for sequential mass spectrometry: 1 - The instrument parameters (1982)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 17 (1982), S. 205-211 
    Details
    ISSN: 0030-493X
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Triple quadrupoles are becoming widely used in sequential mass spectrometry. The observed spectra are very dependent upon the choice of instrument parameters such as the gas target density, the mode of operation of the central quadrupole, and the direct current levels of the quadrupoles (rod-offsets) which determine the collision energy and the maximum mass resolutions in each analysing quadrupole. The influence of each of the instrument parameters is discussed with examples of experimental measurements of performance, and the optimum choice of modes of operation is determined.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/oms.1210170503
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 13
    Digitale Medien
    Digitale Medien
    The use of triple quadrupoles for sequential mass spectrometry: 2 - A detailed case study (1982)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 17 (1982), S. 212-219 
    Details
    ISSN: 0030-493X
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: A detailed exploration of the application of triple quadrupoles in sequential mass spectrometry has been carried out using dimethylmorpholinophosphoramidate as a case study of an ion of relatively high mass and complex structure. Both metastable ion decomposition and dissociation by low energy collision were examined. Variation of the basic instrument parameters allowed the investigation of the cross-section for dissociation as a function of collision energy, the change in fragmentation patterns with collision energy, the kinetic energy distributions of daughter ions and the overall kinetics of dissociation in a succession of ion decomposition sequences giving daughter and granddaughter ions. The daughter ions could also be produced in the source region and examined separately so that a genealogical tree could be established.
    Zusätzliches Material: 12 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/oms.1210170504
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 14
    Digitale Medien
    Digitale Medien
    Raman spectrum of NH4ReO4 at high pressure (1982)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 13 (1982), S. 53-55 
    Details
    ISSN: 0377-0486
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: The pressure dependences at room temperature of the translational lattice modes and of the ν2 and ν4 internal bending modes of the ReO4- ion in solid NH4ReO4 are reported. There is no evidence of any phase transition up to a pressure of 15 kilobar. The pressure coefficients of the translational modes are 2.0 cm-1 GPa-1 and 3.0 cm-1 GPa-1 for the Bg and Eg modes respectively. The pressure coefficients of the bending modes are 1.0 cm-1 GPa-1 and 5.4 cm-1 GPa-1 for the Bg and Ag components of ν2, and 4.1 cm-1 for the overlapped Bg and Eg components of ν4.The symmetry assignments of the low frequency lines in the spectrum were checked by means of polarized Raman spectra of a single crystal. The previous assignments are correct.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jrs.1250130110
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 15
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    Unbekannt
    A comparison of simulated thematic mapper data and multispectral scanner data for Kingsbury County, South Dakota (1982)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-18
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 16
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    Doppler radar echoes of lightning and precipitation at vertical incidence (1982)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-18
    Beschreibung: Digital time series data at 16 heights within two storms were collected at vertical incidence with a 10-cm Doppler radar. On several occasions during data collection, lightning echoes were observed as increased reflectivity on an oscilloscope display. Simultaneously, lightning signals from nearby electric field change antennas were recorded on an analog recorder together with the radar echoes. Reflectivity, mean velocity, and Doppler spectra were examined by means of time series analysis for times during and after lightning discharges. Spectra from locations where lightning occurred show peaks, due to the motion of the lightning channel at the air speed. These peaks are considerably narrower than the ones due to precipitation. Besides indicating the vertical air velocity that can then be used to estimate hydrometeor-size distribution, the lightning spectra provide a convenient means to estimate the radar cross section of the channel. Subsequent to one discharge, we deduce that a rapid change in the orientation of hydrometeors occurred within the resolution volume.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Journal of Geophysical Research; 87; Aug. 20
    Format: text
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    NASA TECHNICAL REPORTS
  • 17
    facet.materialart.
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    Wind structure and small-scale wind variability in the stratosphere and mesosphere during the November 1980 Energy Budget Campaign (1982)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-18
    Beschreibung: Rocket observations made from two sites in northern Scandinavia between November 6 and December 1, 1980, as part of the Energy Budget Campaign are discussed. It was found that significant vertical and temporal changes in the wind structure were present and that they coincided with different geomagnetic conditions, that is, quiet and enhanced. Before November 16, the meridional wind component above 60 km was found to be positive (southerly), whereas the magnitude of the zonal wind component increased with altitude. After November 16 the meridional component became negative (northerly), and the magnitude of the zonal wind component was observed to decrease with altitude. Time sections of the perturbations of the zonal wind reveal the presence of vertically propagating waves, suggesting gravity wave activity. The waves are found to increase in wavelength from 3-4 km near 40 km to more than 12 km near 80 km. The observational techniques made use of chaff foil, chemical trails, inflatable spheres, and parachutes.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: (ISSN 0273-1177)
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 18
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    Energy Remote Sensing Applications Projects at the NASA Ames Research Center (1982)
    In:  CASI
    Details
    Publikationsdatum: 2014-09-09
    Beschreibung: The NASA Ames Research Center is active in energy projects primarily in the role of providing assistance to users in the solution of a number of problems related to energy. Data bases were produced which can be used, in combination with other sources of information, to solve spatially related energy problems. Six project activities at Ames are described which relate to energy and remote sensing. Two projects involve power demand forecasting and estimations using remote sensing and geographic information systems; two others involve transmission line routing and corridor analysis; one involves a synfuel user needs assessment through remote sensing; and the sixth involves the siting of energy facilities.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: Marshall Univ. Proc. of the Natl. Conf. on Energy Resource Management, Vol. 2; p 543-551
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 19
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    Computer-aided Siting of Coal Conversion Facilities (1982)
    In:  CASI
    Details
    Publikationsdatum: 2014-09-09
    Beschreibung: The value of using geographic information systems in site selection for coal conversion plants is discussed. Environmental and cultural factors and capital/operating costs were considered to determine site suitability.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: Marshall Univ. Proc. of the Natl. Conf. on Energy Resource Management, Vol. 2; p 432-446
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 20
    facet.materialart.
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    An initial analysis of LANDSAT 4 Thematic Mapper data for the classification of agricultural, forested wetland, and urban land covers (1982)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: An initial analysis of LANDSAT 4 thematic mapper (TM) data for the delineation and classification of agricultural, forested wetland, and urban land covers was conducted. A study area in Poinsett County, Arkansas was used to evaluate a classification of agricultural lands derived from multitemporal LANDSAT multispectral scanner (MSS) data in comparison with a classification of TM data for the same area. Data over Reelfoot Lake in northwestern Tennessee were utilized to evaluate the TM for delineating forested wetland species. A classification of the study area was assessed for accuracy in discriminating five forested wetland categories. Finally, the TM data were used to identify urban features within a small city. A computer generated classification of Union City, Tennessee was analyzed for accuracy in delineating urban land covers. An evaluation of digitally enhanced TM data using principal components analysis to facilitate photointerpretation of urban features was also performed.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: E84-10073 , NASA-TM-85499 , NSTL/ERL-215 , NAS 1.15:85499
    Format: application/pdf
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