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  • Chemical Engineering  (61)
  • AC3; Arctic Amplification; Arctic Ocean; DATE/TIME; Event label; Identification; Image, sky; In situ; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; particle shape; Particle size distribution; Polarstern; PS122/3; PS122/3_28-151; SFSE; snowfall; Snow fall sensor; Text file; Video; Video In Situ Snowfall Sensor, University of Cologne; VISSS  (34)
  • 2020-2024  (34)
  • 1955-1959  (61)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Effects of bubbling and stirring on mass transfer coefficients in liquids (1957)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 3 (1957), S. 411-417 
    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: In the hydrogenation of α-methylstyrene by means of a suspended palladium-alumina catalyst in a stirred reactor the mass transfer of hydrogen through the liquid is the rate-controlling step and the resistance to chemical reaction at the catalyst surface is negligible except at extremely rapid rates of stirring. This system therefore provides an excellent means of establishing the effects of operating variables and mechanical construction on mass transfer coefficients in liquids in stirred reactors. It is convenient to consider the total resistance to mass transfer as consisting of two separate resistaces: in the liquid adjoining the bubbles and in the liquid adjoining the suspended solid particles; thus R = Rb + Rs.A general equation was evaluated from experimental data based upon unit volume of liquid.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690030323
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Adsorption phase equilibrium correlations: Light-hydrocarbon vapors on activated charcoal (1956)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 2 (1956), S. 65-70 
    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: Data correlations are presented for equilibrium adsorption of pure hydrocarbon vapors and their mixtures. The systems represented are C1 to C4 hydrocarbons (olefins and paraffins) on gas-adsorbent grades of activated charcoal. The mixture data are limited to binary and ternary gas systems. The adsorption conditions represented among the correlated data cover ranges of 77° to 175°F. temperature and 0 to 100 lb./sq. in. gauge. With the use of empirical adsorption constants, a common correlation of specific adsorption capacity for the various hydrocarbons is presented; it applies for either pure components or their mixtures. A correlation is given also for adsorption relative volatilities. Approximate adsorption heats, a limited amount of high-temperature steam adsorption data, and sample calculations on applications of the correlations are included. The prediction methods are recommended for adsorption conditions up to 250°F. and 250 lb/sq. in. gauge for the particular systems studied.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690020114
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Perforated plate efficiency-effect of design and operating variables (1958)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 4 (1958), S. 465-471 
    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: Experimental plate efficiency and pressure drop data were obtained on the n-octane-toluene system in a 5 plate, 6 in. diam. column at atmospheric pressure. Hole sizes of 1/16, 1/8, and 3/16 in.; 5.68 and 12.5% free areas; weir heights of 1, 2, and 3 in.; and plate spacings of 6, 12, 18, and 24 in. were studied. Reflux ratios of one, two, four, five, ten, and total were utilized to determine the effect on efficiency.It was found that hole diameter, free area, plate spacing, and a wide range of reflux ratio had relatively small effect on efficiency and pressure drop; however weir height and lower reflux showed relatively larger effects on both variables.Efficiencies and pressure drops were lower than those predicted from published correlations particularly at low flow rates.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690040416
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Use of zirconium in liquid-sodium systems (1956)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 2 (1956), S. 173-176 
    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 attractive nuclear properties of zirconium make it a highly desirable core material for sodium-cooled reactors. The elevated temperature strength while low is sufficient for certain applications. Development of higher strength alloys is underway. Sodium in itself is completely compatible with zirconium; however, the nonmetallic contaminants, namely oxygen, hydrogen, and nitrogen, can effect serious damage. The primary problem in the use of zirconium in a sodium system, then, lies in controlling these impurities in the sodium.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690020209
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    Paper (German National Licenses)
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  • 5
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    Video In Situ Snowfall Sensor (VISSS) data from MOSAiC expedition with POLARSTERN on 2020-05-24 (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The VISSS is a camera system that records precipitating snow from two perspectives. Here, movies and images of falling precipitation particles are provided for MOSAiC. For more details on the VISSS sensor, see Maahn et al. (2023). The instrument was located at Met City until April 26 2020, but was moved to the P deck of Polarstern on April 30 2020 due to deteriorating sea ice conditions.
    Keywords: AC3; Arctic Amplification; Arctic Ocean; DATE/TIME; Event label; Identification; Image, sky; In situ; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; particle shape; Particle size distribution; Polarstern; PS122/3; PS122/3_28-151; SFSE; snowfall; Snow fall sensor; Text file; Video; Video In Situ Snowfall Sensor, University of Cologne; VISSS
    Type: Dataset
    Format: text/tab-separated-values, 2304 data points
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    DATA PANGAEA
  • 6
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    Video In Situ Snowfall Sensor (VISSS) data from MOSAiC expedition with POLARSTERN on 2020-05-22 (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The VISSS is a camera system that records precipitating snow from two perspectives. Here, movies and images of falling precipitation particles are provided for MOSAiC. For more details on the VISSS sensor, see Maahn et al. (2023). The instrument was located at Met City until April 26 2020, but was moved to the P deck of Polarstern on April 30 2020 due to deteriorating sea ice conditions.
    Keywords: AC3; Arctic Amplification; Arctic Ocean; DATE/TIME; Event label; Identification; Image, sky; In situ; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; particle shape; Particle size distribution; Polarstern; PS122/3; PS122/3_28-151; SFSE; snowfall; Snow fall sensor; Text file; Video; Video In Situ Snowfall Sensor, University of Cologne; VISSS
    Type: Dataset
    Format: text/tab-separated-values, 2308 data points
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    DATA PANGAEA
  • 7
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    Video In Situ Snowfall Sensor (VISSS) data from MOSAiC expedition with POLARSTERN on 2020-05-25 (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The VISSS is a camera system that records precipitating snow from two perspectives. Here, movies and images of falling precipitation particles are provided for MOSAiC. For more details on the VISSS sensor, see Maahn et al. (2023). The instrument was located at Met City until April 26 2020, but was moved to the P deck of Polarstern on April 30 2020 due to deteriorating sea ice conditions.
    Keywords: AC3; Arctic Amplification; Arctic Ocean; DATE/TIME; Event label; Identification; Image, sky; In situ; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; particle shape; Particle size distribution; Polarstern; PS122/3; PS122/3_28-151; SFSE; snowfall; Snow fall sensor; Text file; Video; Video In Situ Snowfall Sensor, University of Cologne; VISSS
    Type: Dataset
    Format: text/tab-separated-values, 2300 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 8
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    Video In Situ Snowfall Sensor (VISSS) data from MOSAiC expedition with POLARSTERN on 2020-05-02 (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The VISSS is a camera system that records precipitating snow from two perspectives. Here, movies and images of falling precipitation particles are provided for MOSAiC. For more details on the VISSS sensor, see Maahn et al. (2023). The instrument was located at Met City until April 26 2020, but was moved to the P deck of Polarstern on April 30 2020 due to deteriorating sea ice conditions.
    Keywords: AC3; Arctic Amplification; Arctic Ocean; DATE/TIME; Event label; Identification; Image, sky; In situ; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; particle shape; Particle size distribution; Polarstern; PS122/3; PS122/3_28-151; SFSE; snowfall; Snow fall sensor; Text file; Video; Video In Situ Snowfall Sensor, University of Cologne; VISSS
    Type: Dataset
    Format: text/tab-separated-values, 2200 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 9
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    Video In Situ Snowfall Sensor (VISSS) data from MOSAiC expedition with POLARSTERN on 2020-05-11 (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The VISSS is a camera system that records precipitating snow from two perspectives. Here, movies and images of falling precipitation particles are provided for MOSAiC. For more details on the VISSS sensor, see Maahn et al. (2023). The instrument was located at Met City until April 26 2020, but was moved to the P deck of Polarstern on April 30 2020 due to deteriorating sea ice conditions.
    Keywords: AC3; Arctic Amplification; Arctic Ocean; DATE/TIME; Event label; Identification; Image, sky; In situ; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; particle shape; Particle size distribution; Polarstern; PS122/3; PS122/3_28-151; SFSE; snowfall; Snow fall sensor; Text file; Video; Video In Situ Snowfall Sensor, University of Cologne; VISSS
    Type: Dataset
    Format: text/tab-separated-values, 2308 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 10
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    Video In Situ Snowfall Sensor (VISSS) data from MOSAiC expedition with POLARSTERN on 2020-05-19 (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The VISSS is a camera system that records precipitating snow from two perspectives. Here, movies and images of falling precipitation particles are provided for MOSAiC. For more details on the VISSS sensor, see Maahn et al. (2023). The instrument was located at Met City until April 26 2020, but was moved to the P deck of Polarstern on April 30 2020 due to deteriorating sea ice conditions.
    Keywords: AC3; Arctic Amplification; Arctic Ocean; DATE/TIME; Event label; Identification; Image, sky; In situ; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; particle shape; Particle size distribution; Polarstern; PS122/3; PS122/3_28-151; SFSE; snowfall; Snow fall sensor; Text file; Video; Video In Situ Snowfall Sensor, University of Cologne; VISSS
    Type: Dataset
    Format: text/tab-separated-values, 2308 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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