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  • EARTH RESOURCES AND REMOTE SENSING  (13)
  • Chemical Engineering  (4)
  • 1980-1984  (17)
  • 1
    Electronic Resource
    Electronic Resource
    Bubble formation at vibrated orifices: Medium-chamber-volume region (1984)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 30 (1984), S. 37-44 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The bubble formation process at small, single, circular orifices at low gas flow rates is modified when the system is vertically vibrated in a sinusoidal fashion.For systems with significant gas chamber volume, bubble volume in the vibrated case is smaller than in the nonvibrated case. The vibrations increase the amount of liquid weeping through the orifice into the gas chamber. A simple inviscid model adequately predicts bubble formation in the medium-chamber-volume region at low values of amplitude and frequency of vibration and low viscosities. The boundaries of the transition from the FR ≫ 1 to the FR = 1 regions are described in terms of “the acceleration number/Eötvös number”.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690300107
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Design concepts for the tallest free-standing fiberglass stack (1984)
    Brookfield, Conn. : Wiley-Blackwell
    Polymer Composites 5 (1984), S. 186-190 
    Details
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper presents design and materials considerations involved in the production of large, free standing glass reinforced plastic (GRP) industrial stacks. Because of large wind loads, such stacks must be designed with sophisticated structural analysis techniques, especially at load transfer points. This paper details such considerations for the world's tallest GRP stack.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pc.750050305
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  • 3
    Electronic Resource
    Electronic Resource
    Explosion accident investigation (1982)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 1 (1982), S. 144-147 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720010305
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Preliminary results on toughening a linear-low-density polyethylene using thermoplastic elastomers (1984)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 24 (1984), S. 1348-1353 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The effects of several commercially available thermoplastic elastomers (TPE) on a gas-phase linear-low-density polyethylene (LLDPE) were studied using small-scale commercial-compounding techniques. The properties of blown films of these compositions were evaluated as a function of TPE type and composition and compared to unmodified LLDPE films. Ethylene/propylene elastomers had modest effects on the falling dart impact strength and machine-direction tear propagation resistance while polyisobutylene and styrene block copolymers had more significant effects on these properties.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760241712
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  • 5
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    Some characteristics and advantages of LANDSAT 3 return beam vidicon images (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: One advantage of a LANDSAT 3 return beam vidicon (RBV) scene is the synoptic view it provides. A 1:500,000 paper print of the size 19.4 cm x 19.4 cm encompasses an area of about 3,721 square miles (9,637 sq. km.) and this compares very favorably in coverage to small scale aerial photography. A second important advantage is that the ground resolution is 38 by 38 meters. Compared to the resolution of the MSS which is 79 by 79 meters the RBV provides a wealth of detail useful for many purposes. A great variety of man made structures are visible including bridges, roads, docks, and small airfields. Agricultural field patterns are clear and settlements of various sizes can be identified and delineated. A third advantage is related to the approximate panchromatic spectral response displayed in RBV images. Since many aerial photographic interpreters are accustomed to working with panchromatic photographs, they should have no difficulty understanding and putting RBV images immediately into use.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Purdue Univ. CORSE-81: The 1981 Conf. on Remote Sensing Educ.; p 84-85
    Format: text
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  • 6
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    Relationships between mineralization and silicic volcanism in the Central Andes (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Volcanology and Geothermal Research (ISSN 0377-0273); 18; 165-190
    Format: text
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  • 7
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    The Use of Thematic Mapper Data for Land Cover Discrimination: Preliminary Results from the UK Satmap Programme (1984)
    In:  CASI
    Details
    Publication Date: 2014-09-13
    Description: In assessing the accuracy of classification techniques for Thematic Mapper data the consistency of the detector-to-detector response is critical. Preliminary studies were undertaken, therefore, to assess the significance of this factor for the TM. The overall structure of the band relationships can be examined by principal component analysis. In order to examine the utility of the Thematic Mapper data more carefully, six different land cover classes approximately Anderson level 1 were selected. These included an area of water from the sediment-laden Mississippi, woodland, agricultural land and urban land. A plume class was also selected which includes the plume of smoke emanating from the power station and drifting over the Mississippi river.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center LANDSAT-4 Sci. Invest. Summ., Including Dec. 1983 Workshop Results, Vol. 2; p 149-152
    Format: text
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  • 8
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    The use of thematic mapper data for land cover discrimination: Preliminary results from the UK SATMaP programme (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The principal objectives of the UK SATMaP program are to determine thematic mapper (TM) performance with particular reference to spatial resolution properties and geometric characteristics of the data. So far, analysis is restricted to images from the U.S. and concentrates on spectra and radiometric properties. The results indicate that the data are inherently three dimensional compared with the two dimensional character of MSS data. Preliminary classification results indicate the importance of the near infrared band (TM 4), at least one middle infrared band (TM 5 or TM 6) and at least one of the visible bands (preferably either TM 3 or TM 1). The thermal infrared also appears to have discriminatory ability despite its coarser spatial resolution. For band 4 the forward and reverse scans show somewhat different spectral responses in one scene but this effect is absent in the other analyzed. From examination of the histograms it would appear that the full 8-bit quantization is not being effectively utilized for all the bands.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E84-10038 , NASA-CR-174590 , NAS 1.26:174590
    Format: application/pdf
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  • 9
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    The United Kingdom SATMaP program (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Data from test tapes from the United States (specifically the August Arkansas scene) and the first tape of the UK test site which came from ESRIN are analyzed. Methods for estimating spatial resolution are discussed and some preliminary results are included. The characteristics of the ESRIN data are examined and the utility of the various spectral bands of the thematic mapper for land cover mapping are outlined.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E84-10002 , NASA-CR-174517 , NAS 1.26:174517
    Format: application/pdf
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  • 10
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    Winter wheat: A model for the simulation of growth and yield in winter wheat (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The basic ideas and constructs for a general physical/physiological process level winter wheat simulation model are documented. It is a materials balance model which calculates daily increments of photosynthate production and respiratory losses in the crop canopy. The partitioning of the resulting dry matter to the active growing tissues in the plant each day, transpiration and the uptake of nitrogen from the soil profile are simulated. It incorporates the RHIZOS model which simulates, in two dimensions, the movement of water, roots, and soluble nutrients through the soil profile. It records the time of initiation of each of the plant organs. These phenological events are calculated from temperature functions with delays resulting from physiological stress. Stress is defined mathematically as an imbalance in the metabolite supply; demand ratio. Physiological stress is also the basis for the calculation of rates of tiller and floret abortion. Thus, tillering and head differentiation are modeled as the resulants of the two processes, morphogenesis and abortion, which may be occurring simulaneously.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E82-10367 , NASA-CR-169164 , YM-U2-04281 , JSC-18229 , NAS 1.26:169164
    Format: application/pdf
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