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  • Polymer and Materials Science  (443)
  • Industrial Chemistry  (224)
  • 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology  (14)
  • 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous
  • Wiley-Blackwell  (671)
  • American Geophysical Union  (11)
  • Springer  (3)
  • Agu  (1)
  • COPERNICUS GESELLSCHAFT MBH, BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
  • Springer Berlin Heidelberg
  • 2010-2014  (20)
  • 1995-1999
  • 1975-1979
  • 1950-1954  (667)
  • 2013  (7)
  • 2010  (13)
  • 1953  (667)
Collection
Keywords
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  • 2010-2014  (20)
  • 1995-1999
  • 1975-1979
  • 1950-1954  (667)
Year
  • 1
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    Towards an automatic monitoring system of infrasonic events at Mt. Etna: strategies for source location and modelling (2010)
    Springer
    Details
    Publication Date: 2020-11-16
    Description: Active volcanoes characterized by open conduit conditions generate sonic and infrasonic signals, whose investigation provides useful information for both monitoring purposes and studying the dynamics of explosive processes. In this work, we discuss the automatic procedures implemented for a real-time application to the data acquired by a permanent network of five infrasound stations running at Mt. Etna volcano. The infrasound signals at Mt. Etna consist in amplitude transients, called infrasound events. The adopted procedure uses a multi-algorithm approach for event detection, counting, characterization and location. It is designed for an efficient and accurate processing of infrasound records provided by single-site and array stations. Moreover, the source mechanism of these events can be investigated off-line or in near real-time by using three different models: i) Strombolian bubble; ii) resonating conduit and iii) Helmholtz resonator. The infrasound waveforms allow us to choose the most suitable model, to get quantitative information about the source and to follow the time evolution of the source parameters.
    Description: Published
    Description: 1215–1231
    Description: 6V. Pericolosità vulcanica e contributi alla stima del rischio
    Description: JCR Journal
    Description: open
    Keywords: infrasound ; monitoring system ; Mt. Etna ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Synchronization between tides and sustained oscillations of the hydrothermal system of Campi Flegrei (Italy) (2013)
    American Geophysical Union
    Details
    Publication Date: 2020-12-15
    Description: Long continuous seismic data recorded at five broadband seismic stations during 2006 at Campi Flegrei caldera have been analyzed. Introducing a coarse-grained method, we evaluate the time evolution of amplitude and polarization of the seismic noise in the frequency band common to long-period events. The series are modulated on tidal time scales: the root-mean square is basically dominated by solar contribution, while the azimuth of the polarization vector shows lunar diurnal and semidiurnal constituents. In addition, we find that in the frequency band common to long-period events the azimuths are polarized toward a specific area, suggesting that these persistent oscillations can be induced by the activity of the shallow geothermal reservoir.
    Description: Published
    Description: 2628–2637
    Description: JCR Journal
    Description: restricted
    Keywords: sustained hydrothermal tremor ; Campi Flegrei Caldera ; polarization analysis ; tidal modulation ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 3
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    Geological and geophysical investigation of Kamil crater, Egypt (2013)
    Wiley-Blackwell
    Details
    Publication Date: 2020-12-21
    Description: We detail the Kamil crater (Egypt) structure and refine the impact scenario, based on the geological and geophysical data collected during our first expedition in February 2010. Kamil Crater is a model for terrestrial small-scale hypervelocity impact craters. It is an exceptionally well-preserved, simple crater with a diameter of 45 m, depth of 10 m, and rayed pattern of bright ejecta. It occurs in a simple geological context: flat, rocky desert surface, and target rocks comprising subhorizontally layered sandstones. The high depth-to-diameter ratio of the transient crater, its concave, yet asymmetric, bottom, and the fact that Kamil Crater is not part of a crater field confirm that it formed by the impact of a single iron mass (or a tight cluster of fragments) that fragmented upon hypervelocity impact with the ground. The circular crater shape and asymmetries in ejecta and shrapnel distributions coherently indicate a direction of incidence from the NW and an impact angle of approximately 30 to 45 . Newly identified asymmetries, including the off-center bottom of the transient crater floor downrange, maximum overturning of target rocks along the impact direction, and lower crater rim elevation downrange, may be diagnostic of oblique impacts in well-preserved craters. Geomagnetic data reveal no buried individual impactor masses 〉100 kg and suggest that the total mass of the buried shrapnel 〉100 g is approximately 1050–1700 kg. Based on this mass value plus that of shrapnel 〉10 g identified earlier on the surface during systematic search, the new estimate of the minimum projectile mass is approximately 5 t.
    Description: Published
    Description: 1842–1868
    Description: 3.8. Geofisica per l'ambiente
    Description: JCR Journal
    Description: restricted
    Keywords: Impact craters ; geophysical survey ; iron meteorite ; impact scenario ; 04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous ; 04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniques ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous
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  • 4
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    Evolution of an active lava flow field using a multitemporal LIDAR acquisition (2010)
    American Geophysical Union
    Details
    Publication Date: 2012-02-03
    Description: Application of light detection and ranging (LIDAR) technology in volcanology has 7 developed rapidly over the past few years, being extremely useful for the generation 8 of high‐spatial‐resolution digital elevation models and for mapping eruption products. 9 However, LIDAR can also be used to yield detailed information about the dynamics of 10 lava movement, emplacement processes occuring across an active lava flow field, and the 11 volumes involved. Here we present the results of a multitemporal airborne LIDAR survey 12 flown to acquire data for an active flow field separated by time intervals ranging from 13 15 min to 25 h. Overflights were carried out over 2 d during the 2006 eruption of Mt. Etna, 14 Italy, coincident with lava emission from three ephemeral vent zones to feed lava flow in 15 six channels. In total 53 LIDAR images were collected, allowing us to track the volumetric 16 evolution of the entire flow field with temporal resolutions as low as ∼15 min and at a 17 spatial resolution of 〈1 m. This, together with accurate correction for systematic errors, 18 finely tuned DEM‐to‐DEM coregistration and an accurate residual error assessment, 19 permitted the quantification of the volumetric changes occuring across the flow field. We 20 record a characteristic flow emplacement mode, whereby flow front advance and channel 21 construction is fed by a series of volume pulses from the master vent. Volume pulses 22 have a characteristic morphology represented by a wave that moves down the channel 23 modifying existing channel‐levee constructs across the proximal‐medial zone and building 24 new ones in the distal zone. Our high‐resolution multitemporal LIDAR‐derived DEMs 25 allow calculation of the time‐averaged discharge rates associated with such a pulsed flow 26 emplacement regime, with errors under 1% for daily averaged values.
    Description: This work was partially funded by the Italian 930 Dipartimento della Protezione Civile in the frame of the 2007–2009 Agree- 931 ment with Istituto Nazionale di Geofisica e Vulcanologia–INGV. A.F. 932 benefited from the MIUR‐FIRB project “Piattaforma di ricerca multi‐disci- 933 plinare su terremoti e vulcani (AIRPLANE)” n. RBPR05B2ZJ. S.T. 934 benefited from the project FIRB “Sviluppo di nuove tecnologie per la prote- 935 zione e difesa del territorio dai rischi naturali (FUMO)” funded by the Italian 936 Ministero dell’Istruzione, dell’Università e della Ricerca.
    Description: Published
    Description: B11203
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 1.10. TTC - Telerilevamento
    Description: 3.6. Fisica del vulcanismo
    Description: JCR Journal
    Description: reserved
    Keywords: LIDAR ; lava flow ; Etna ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 5
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    Predicting the impact of lava flows at Mount Etna, Italy (2010)
    American Geophysical Union
    Details
    Publication Date: 2017-04-04
    Description: Forecasting the time, nature, and impact of future eruptions is difficult at volcanoes such as Mount Etna, in Italy, where eruptions occur from the summit and on the flanks, affecting areas distant from each other. Nonetheless, the identification and quantification of areas at risk from new eruptions are fundamental for mitigating potential human casualties and material damage. Here, we present new results from the application of a methodology to define flexible high‐resolution lava invasion susceptibility maps based on a reliable computational model for simulating lava flows at Etna and on a validation procedure for assessing the correctness of susceptibility mapping in the study area. Furthermore, specific scenarios can be extracted at any time from the simulation database, for land use and civil defense planning in the long term, to quantify, in real time, the impact of an imminent eruption, and to assess the efficiency of protective measures.
    Description: This work was sponsored by the Italian Ministry for Education, University and Research, FIRB project RBAU01RMZ4 “Lava flow simulations by Cellular Automata,” and by the National Civil Defense Department and INGV (National Institute of Geophysics and Volcanology), project V3_6/09 “V3_6 – Etna.”
    Description: Published
    Description: B04203
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 3.5. Geologia e storia dei vulcani ed evoluzione dei magmi
    Description: 3.6. Fisica del vulcanismo
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: 4.4. Scenari e mitigazione del rischio ambientale
    Description: JCR Journal
    Description: reserved
    Keywords: lava flows ; volcanic hazard ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.04. Geology::04.04.03. Geomorphology ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk ; 05. General::05.01. Computational geophysics::05.01.02. Cellular automata, fuzzy logic, genetic alghoritms, neural networks ; 05. General::05.01. Computational geophysics::05.01.05. Algorithms and implementation ; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous ; 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions ; 05. General::05.08. Risk::05.08.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 6
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    Patterns in the recent 2007–2008 activity of Mount Etna volcano investigated by integrated geophysical and geochemical observations (2010)
    American Geophysical Union
    Details
    Publication Date: 2012-02-03
    Description: An edited version of this paper was published by AGU. Copyright (2010) American Geophysical Union
    Description: Seismic, deformation, and volcanic gas observations offer independent and complementary information on the activity state and dynamics of quiescent and eruptive volcanoes and thus all contribute to volcanic risk assessment. In spite of their wide use, there have been only a few efforts to systematically integrate and compare the results of these different monitoring techniques. Here we combine seismic (volcanic tremor and long‐period seismicity), deformation (GPS), and geochemical (volcanic gas plume CO2/SO2 ratios) measurements in an attempt to interpret trends in the recent (2007–2008) activity of Etna volcano. We show that each eruptive episode occurring at the Southeast Crater (SEC) was preceded by a cyclic phase of increase‐decrease of plume CO2/SO2 ratios and by inflation of the volcano’s summit captured by the GPS network. These observations are interpreted as reflecting the persistent supply of CO2‐rich gas bubbles (and eventually more primitive magmas) to a shallow (depth of 1–2.8 km asl) magma storage zone below the volcano’s central craters (CCs). Overpressuring of the resident magma stored in the upper CCs’ conduit triggers further magma ascent and finally eruption at SEC, a process which we capture as an abrupt increase in tremor amplitude, an upward (〉2800 m asl) and eastward migration of the source location of seismic tremor, and a rapid contraction of the volcano’s summit. Resumption of volcanic activity at SEC was also systematically anticipated by declining plume CO2/SO2 ratios, consistent with magma degassing being diverted from the central conduit area (toward SEC).
    Description: Published
    Description: Q09008
    Description: 1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attive
    Description: 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: volcano monitoring ; Mt. Etna volcano ; geochemistry and geophysics ; volcanic tremor ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.08. Volcanology::04.08.01. Gases ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 7
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    Response of Mount Etna to dynamic stresses from distant earthquakes (2010)
    American Geophysical Union
    Details
    Publication Date: 2012-02-03
    Description: Influences of distant earthquakes on volcanic systems by dynamic stress transfer are well documented. We analyzed seismic signals and volcanic activity at Mount Etna during two periods, January 2006 and May 2008, that clearly showed variations coincident with distant earthquakes. In the first period, characterized by mild volcano activity, the effect of the dynamic stress transfer, caused by an earthquake in Greece (M = 6.8), was twofold: (1) banded tremor activity changed its features and almost disappeared; (2) a swarm of volcano‐tectonic (VT) earthquakes took place. The changes of the banded tremor were likely due to variations in rock permeability, caused by fluid flows driven by dynamic strain. The VT earthquake swarm probably developed as a secondary process, promoted by the dynamically triggered activation of magmatic fluids. The second period, May 2008, showed an intense explosive activity. During this interval, the dynamic stress transfer, associated with the arrival of the seismic waves of the Sichuan earthquake (M = 7.9), affected the character of the seismo‐volcanic signals and on the following day triggered an eruption. In particular, we observed changes in volcanic tremor and increases of both occurrence rate and energy of long period events. In this case, we suggest that dynamic stress transfer caused nucleation of new bubbles in volatile‐rich magma bodies with consequent buildup of pressure, highlighted by the increase of long period activity, followed by the occurrence of an eruption. We conclude that stresses from distant earthquakes are capable of modifying the state of the volcano.
    Description: Published
    Description: B12304
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: Mt. Etna volcano ; dynamic stress transfer ; triggered eruption ; triggered seismicity ; volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 8
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    Anatomy of an unstable volcano from InSAR: Multiple processes affecting flank instability at Mt. Etna, 1994–2008 (2010)
    American Geophysical Union
    Details
    Publication Date: 2012-02-03
    Description: An edited version of this paper was published by AGU. Copyright (2010) American Geophysical Union.
    Description: Volcano deformation may occur under different conditions. To understand how a volcano deforms, as well as relations with magmatic activity, we studied Mt. Etna in detail using interferometric synthetic aperture radar (InSAR) data from 1994 to 2008. From 1994 to 2000, the volcano inflated with a linear behavior. The inflation was accompanied by eastward and westward slip on the eastern and western flanks, respectively. The portions proximal to the summit showed higher inflation rates, whereas the distal portions showed several sectors bounded by faults, in some cases behaving as rigid blocks. From 2000 to 2003, the deformation became nonlinear, especially on the proximal eastern and western flanks, showing marked eastward and westward displacements, respectively. This behavior resulted from the deformation induced by the emplacement of feeder dikes during the 2001 and 2002–2003 eruptions. From 2003 to 2008, the deformation approached linearity again, even though the overall pattern continued to be influenced by the emplacement of the dikes from 2001 to 2002. The eastward velocity on the eastern flank showed a marked asymmetry between the faster sectors to the north and those (largely inactive) to the south. In addition, from 1994 to 2008 part of the volcano base (south, west, and north lower slopes) experienced a consistent trend of uplift on the order of ∼0.5 cm/yr. This study reveals that the flanks of Etna have undergone a complex instability resulting from three main processes. In the long term (103–104 years), the load of the volcano is responsible for the development of a peripheral bulge. In the intermediate term (≤101 years, observed from 1994 to 2000), inflation due to the accumulation of magma induces a moderate and linear uplift and outward slip of the flanks. In the short term (≤1 year, observed from 2001 to 2002), the emplacement of feeder dikes along the NE and south rifts results in a nonlinear, focused, and asymmetric deformation on the eastern and western flanks. Deformation due to flank instability is widespread at Mt. Etna, regardless of volcanic activity, and remains by far the predominant type of deformation on the volcano.
    Description: ESA provided the SAR data (Cat‐1 no. 4532 and GEO Supersite initiative). The DEM was obtained from the SRTM archive, while the ERS‐1/2 orbits are courtesy of the TU‐Delft, The Netherlands. This work was partially funded by INGV and the Italian DPC (DPCINGV project V4 “Flank”), the Italian DPC (under special agreement with IREA‐CNR), and the Italian Space Agency under contract “sistema rischio vulcanico (SRV).” The authors thank Francesco Casu, Paolo Berardino, and Riccardo Lanari for their support and Geoff Wadge and Michael Poland for their helpful and constructive review of the manuscript.
    Description: Published
    Description: B10405
    Description: 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 1.10. TTC - Telerilevamento
    Description: 3.2. Tettonica attiva
    Description: 3.5. Geologia e storia dei vulcani ed evoluzione dei magmi
    Description: 3.6. Fisica del vulcanismo
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: JCR Journal
    Description: reserved
    Keywords: Flank instability ; InSAR ; volcanoes ; Etna ; 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous ; 04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes ; 04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous ; 04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones ; 04. Solid Earth::04.04. Geology::04.04.09. Structural geology ; 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics ; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk ; 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions ; 05. General::05.04. Instrumentation and techniques of general interest::05.04.99. General or miscellaneous ; 05. General::05.08. Risk::05.08.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 9
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    Predicting the impact of lava flows at Mount Etna (Italy) (2010)
    American Geophysical Union
    Details
    Publication Date: 2017-04-04
    Description: Forecasting the time, nature and impact of future eruptions is difficult at volcanoes such as Mount Etna, in Italy, where eruptions occur from the summit and on the flanks, affecting areas distant from each other. Nonetheless, the identification and quantification of areas at risk from new eruptions is fundamental for mitigating potential human casualties and material damage. Here, we present new results from the application of a methodology to define flexible high-resolution lava invasion susceptibility maps based on a reliable computational model for simulating lava flows at Etna and on a validation procedure for assessing the correctness of susceptibility mapping in the study area. Furthermore, specific scenarios can be extracted at any time from the simulation database, for land-use and civil defence planning in the long-term, to quantify, in real-time, the impact of an imminent eruption, and to assess the efficiency of protective measures.
    Description: This work was sponsored by the Italian Ministry for Education, University and Research, FIRB project n° RBAU01RMZ4 “Lava flow simulations by Cellular Automata”, and by the National Civil Defence Department and INGV (National Institute of Geophysics and Volcanology), project V3_6/09 “V3_6 – Etna”.
    Description: In press
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 3.5. Geologia e storia dei vulcani ed evoluzione dei magmi
    Description: 3.6. Fisica del vulcanismo
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: 4.4. Scenari e mitigazione del rischio ambientale
    Description: JCR Journal
    Description: open
    Keywords: lava flows ; Etna ; hazard evaluation ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk ; 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous ; 05. General::05.01. Computational geophysics::05.01.02. Cellular automata, fuzzy logic, genetic alghoritms, neural networks ; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous ; 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions ; 05. General::05.08. Risk::05.08.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 10
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    Insights into magma and f luid transfer at Mount Etna by a multiparametric approach: A model of the events leading to the 2011 eruptive cycle (2013)
    American Geophysical Union
    Details
    Publication Date: 2017-04-04
    Description: Since the second half of the 1990s, the eruptive activity of Mount Etna has provided evidence that both explosive and effusive eruptions display periodic variations in discharge and eruption style. In this work, a multiparametric approach, consisting of comparing volcanological, geophysical, and geochemical data, was applied to explore the volcano's dynamics during 2009–2011. In particular, temporal and/or spatial variations of seismicity (volcano-tectonic earthquakes, volcanic tremor, and long-period and very long period events), ground deformation (GPS and tiltmeter data), and geochemistry (SO2 flux, CO2 flux, CO2/SO2 ratio) were studied to understand the volcanic activity, as well as to investigate magma movement in both deep and shallow portions of the plumbing system, feeding the 2011 eruptive period. After the volcano deflation, accompanying the onset of the 2008–2009 eruption, a new recharging phase began in August 2008. This new volcanic cycle evolved from an initial recharge phase of the intermediate-shallower plumbing system and inflation, followed by (i) accelerated displacement in the volcano's eastern flank since April 2009 and (ii) renewal of summit volcanic activity during the second half of 2010, culminating in 2011 in a cyclic eruptive behavior with 18 lava fountains from New Southeast Crater (NSEC). Furthermore, supported by the geochemical data, the inversion of ground deformation GPS data and the locations of the tremor sources are used here to constrain both the area and the depth range of magma degassing, allowing reconstructing the intermediate and shallow storage zones feeding the 2011 cyclic fountaining NSEC activity.
    Description: Published
    Description: 3519–3539
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: JCR Journal
    Description: restricted
    Keywords: Mt Etna ; seismology ; ground deformation ; geochemistry ; volcanology ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 11
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    Towards an Automatic Monitoring System of Infrasonic Events at Mt. Etna: Strategies for Source Location and Modeling (2010)
    Springer
    Details
    Publication Date: 2017-04-04
    Description: Active volcanoes characterized by open conduit conditions generate sonic and infrasonic signals, whose investigation provides useful information for both monitoring purposes and studying the dynamics of explosive processes. In this work, we discuss the automatic procedures implemented for a real-time application to the data acquired by a permanent network of five infrasound stations running at Mt. Etna volcano. The infrasound signals at Mt. Etna consist in amplitude transients, called infrasound events. The adopted procedure uses a multi-algorithm approach for event detection, counting, characterization and location. It is designed for an efficient and accurate processing of infrasound records provided by single-site and array stations. Moreover, the source mechanism of these events can be investigated off-line or in near real-time by using three different models: (1) Strombolian bubble; (2) resonating conduit and (3) Helmholtz resonator. The infrasound waveforms allow us to choose the most suitable model, to get quantitative information about the source and to follow the time evolution of the source parameters.
    Description: Published
    Description: 1215–1231
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: Infrasound ; monitoring system ; Mt. Etna volcano ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques
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  • 12
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    New insights into banded tremor from the 2008–2009 Mount Etna eruption (2010)
    American Geophysical Union
    Details
    Publication Date: 2017-04-04
    Description: We investigated the banded tremor activity occurring at Mt. Etna volcano between August-October 2008 during the 2008-2009 eruption. The banded tremor occurred in episodes lasting 25-30 minutes with intervals in between the episodes of about 25 minutes. Seismic signal analyses showed that the banded tremor was characterised by spectral contents, wavefields and source locations that differed from the “ordinary” volcanic tremor. The infrasound recordings exhibited an intermittent infrasonic tremor alternating with the banded tremor episodes. Finally, nonlinear analyses suggested that banded tremor system can be considered chaotic, implying: i) sensitive dependence on initial conditions, suggesting not only that a banded tremor system requires particular conditions to generate, but also that slight variations of these conditions are able to greatly change the features of the banded tremor or even to stop it; ii) long-term unpredictability, that is, the impossibility to forecast the long-term evolution of the banded tremor. On the basis of all these results and analogies with geyser models, we suggest a model of banded tremor that invokes alternating recharge-discharge phases. Banded tremor is due to “perturbations” in shallow aquifers, such as fluid movement and bubble growth or collapse due to hydrothermal boiling, triggered by the heat and hot fluid transfer from the underlying magma bodies. This heat-fluid transfer also causes an increasing pressure in the aquifer leading to fluid-discharge. During this process the seismic radiation decreases and, if the fluid-discharge is well coupled with the atmosphere, acoustic signals are generated.
    Description: Published
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: Banded tremor ; Mt. Etna volcano ; volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 13
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    Spatial distribution of intrinsic and scattering seismic attenuation in active volcanic islands – II: Deception Island images (2013)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: In this work, we present regional maps of the inverse intrinsic quality factor (Qi −1), the inverse scattering quality factor (Qs −1) and total inverse quality factor (Qt −1) for the volcanic environment of Deception Island (Antarctica). Our attenuation study is based on diffusion approximation, which permits us to obtain the attenuation coefficients for every single couple source-receiver separately. The data set used in this research is derived from an active seismic experiment using more than 5200 offshore shots (air guns) recorded at 32 onshore seismic stations and four ocean bottom seismometers. To arrive at a regional distribution of these values, we used a new mapping technique based on a Gaussian space probability function. This approach led us to create ‘2-D probabilistic maps’ of values of intrinsic and scattering seismic attenuation. The 2-D tomographic images confirm the existence of a high attenuation body below an inner bay of Deception Island. This structure, previously observed in 2-D and 3-D velocity tomography of the region, is associated with a massive magma reservoir. Magnetotelluric studies reach a similar interpretation of this strong anomaly. Additionally, we observed areas with lower attenuation effects that bear correlation with consolidated structures described in other studies and associated with the crystalline basement of the area. Our calculations of the transport mean-free path and absorption length for intrinsic attenuation gave respective values of ≈950 m and 5 km, which are lower than the values obtained in tectonic regions or volcanic areas such as Tenerife Island. However, as observed in other volcanic regions, our results indicate that scattering effects dominate strongly over the intrinsic attenuation.
    Description: This work has been partially supported by the Spanish project Ephestos, CGL2011–29499-C02–01, by the EU project EC-FP7 MEDiterranean SUpersite Volcanoes (MED-SUV), by the Basque Government researcher training program BFI09.277 and by the Regional project ‘Grupo de Investigaci´on en Geof´ısica y Sismolog´ıa de la Junta de Andaluc´ıa, RNM104.’ Edoardo del Pezzo was partly supported by DPC-INGV projects UNREST SPEED and V2 (Precursori).
    Description: Published
    Description: 1957-1969
    Description: 3.1. Fisica dei terremoti
    Description: 3.6. Fisica del vulcanismo
    Description: JCR Journal
    Description: restricted
    Keywords: Seismic attenuation; ; Seismic tomography ; Volcano seismology ; Wave scattering and diffraction ; Wave propagation ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 14
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    Magnitude scale for LP events: a quantification scheme for volcanic quakes (2013)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: The peculiar source characteristics of long-period seismic events (time persistency of the source, low-frequency peaks in the source spectrum, absence of high-frequency radiation) prevent the formation of a definite high-frequency coda in the seismograms. In contrast, this is well formed in volcano–tectonic quakes. For this reason, the widely used duration magnitude scale that is based on the proportionality between the energy and the coda duration cannot be used for long-period estimation. In observatory practice, the long-period magnitude is sometimes estimated using the same duration magnitude scale, leading to confusing results. In this report, we show a new method to estimate the magnitude of long-period events that generally occur for volcanoes, with some application examples from data for Mt Etna (Italy), Colima Volcano (Mexico) and Campi Flegrei (Italy).
    Description: Published
    Description: 911-919
    Description: 3.1. Fisica dei terremoti
    Description: JCR Journal
    Description: restricted
    Keywords: Earthquake source observations; ; Volcano monitoring ; Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 15
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    Unknown
    Vent temperature trends at the Vulcano Fossa fumarole field: the role of permeability (2013)
    Springer Berlin Heidelberg
    Details
    Publication Date: 2017-04-04
    Description: Between 1994 and 2010, we completed 16 thermal surveys of Vulcano’s Fossa fumarole field (Aeolian Islands, Italy). In each survey, between 400 and 1,200 vent temperatures were collected using a thermal infrared thermometer from distances of ∼1 m. The results show a general decrease in average vent temperature during 1994–2003, with the average for the entire field falling from ∼220°C in 1994 to ∼150°C by 2003. However, between 2004 and 2010, we witnessed heating, with the average increasing to ∼190°C by 2010. Alongside these annual-scale field-wide trends, we record a spatial re-organisation of the fumarole field, characterised by shut down of vent zones towards the crater floor, matched by rejuvenation of zones located towards the crater rim. Heating may be expected to be associated with deflation because increased amounts of vaporisation will remove volume from the hydrothermal system Gambino and Guglielmino (J Geophys Res 113: B07402, 2008). However, over the 2004–2010 heating period, no ground deformation was observed. Instead, the number of seismic events increased from a typical rate of 37 events per month during 1994–2000 to 195 events per month during 2004–2010. As part of this increase, we noticed a much greater number of high-frequency events associated with rock fracturing. We thus suggest that the heating event of 2004–2010 was the result of changed permeability conditions, rather than change in the heat supply from the deeper magmatic source. Within this scenario, cooling causes shut down of lower sectors and re-establishment of pathways located towards the crater rim, causing fracturing, increased seismicity and heat flow in these regions. This is consistent with the zone of rejuvenation (which lies towards and at the rim) being the most favourable location for fracturing given the stress field of the Fossa cone Schöpa et al. (J Volcanol Geotherm Res 203:133–145, 2011); it is also the most established zone, having been active at least since the early twentieth century. Our data show the value of deploying multi-disciplinary geophysical campaigns at degassing (fumarolic) hydrothermal systems. This allows more complete and constrained understanding of the true heat loss dynamics of the system. In the case study presented here, it allows us to distinguish true heating from apparent heating phases. While the former are triggered from the bottom-up, i.e. they are driven by increases in heat supply from the magmatic source, the latter are triggered from the top-down, i.e. by changing permeability conditions in the uppermost portion of the system to allow more efficient heat flow over zones predisposed to fracturing.
    Description: Published
    Description: 1293-1311
    Description: 1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attive
    Description: 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 3.6. Fisica del vulcanismo
    Description: JCR Journal
    Description: restricted
    Keywords: Fumaroles ; Vulcano ; Vent temperature ; Seismicity ; Ground Deformation ; Permeability ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.08. Volcanology::04.08.01. Gases ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 16
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    Unknown
    Spatial distribution of intrinsic and scattering seismic attenuation in active volcanic islands – I: model and the case of Tenerife Island (2013)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: The complex volcanic system of Tenerife Island is known to have a highly heterogeneous character, as recently confirmed by velocity tomography.We present new information derived from intrinsic quality factor inverse maps (Qi −1), scattering quality factor inverse maps (Qs −1) and total quality factor inverse maps (Qt −1) obtained for the same region. The data set used in this work is the result of the analysis of an active seismic experiment carried out, using offshore shots (air guns) recorded at over 85 onshore seismic stations. The estimates of the attenuation parameters are based on the assumption that the seismogram energy envelopes are determined by seismic energy diffusion processes occurring inside the island. Diffusion model parameters, proportional to Qi −1 and to Qs −1, are estimated from the inversion of the energy envelopes for any source–receiver couple. They are then weighted with a new graphical approach based on a Gaussian space probability function, which allowed us to create ‘2-D probabilistic maps’ representing the space distribution of the attenuation parameters. The 2-D images obtained reveal the existence of a zone in the centre of the island characterized by the lowest attenuation effects. This effect is interpreted as highly rigid and cooled rocks. This low-attenuation region is bordered by zones of high attenuation, associated with the recent historical volcanic activity. We calculate the transport mean free path obtaining a value of around 4 km for the frequency range 6–12 Hz. This result is two orders of magnitude smaller than values calculated for the crust of the Earth. An absorption length between 10 and 14 km is associated with the average intrinsic attenuation parameter. These values, while small in the context of tectonic regions, are greater than those obtained in volcanic regions such as Vesuvius or Merapi. Such differences may be explained by the magnitude of the region of study, over three times larger than the aforementioned study areas. This also implies deeper sampling of the crust, which is evidenced by a change in the values of seismic attenuation. One important observation is that scattering attenuation dominates over the intrinsic effects, Qi being at least twice the value of Qs.
    Description: This work has been partially supported by the Spanish project Ephestos, CGL2011-29499-C02-01, by the EU project EC-FP7 MEDiterranean SUpersite Volcanoes (MED-SUV), by the Basque Government researcher training program BFI09.277 and by the Regional project ‘Grupo de Investigaci´on en Geof´ısica y Sismolog´ıa de la Junta de Andaluc´ıa, RNM104’. EdP has been partly supported by DPC-INGV projects UNREST SPEED and V2 (Precursori).
    Description: Published
    Description: 1942-1956
    Description: 3.1. Fisica dei terremoti
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: restricted
    Keywords: Seismic attenuation ; ; Seismic tomography; ; Volcano seismology ; Wave propagation. ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 17
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    Seismic attenuation imaging of Campi Flegrei: Evidence of gas reservoirs, hydrothermal basins, and feeding systems (2010)
    Agu
    Details
    Publication Date: 2019-03-05
    Description: An edited version of this paper was published by AGU. Copyright (2010) American Geophysical Union.
    Description: Passive high‐resolution attenuation tomography is used here to image the geological structure in the first upper 4 km of the shallow crust beneath the Campi Flegrei caldera, southern Italy. The inverse Q was estimated for each source‐receiver path using the coda‐normalization method (S‐waves) and the slope decay method (P‐waves and S‐waves). Inversion was performed using a multi‐resolution method, which ensures a minimum cell‐size resolution of 500 m. The study of the resolution matrix as well as the synthetic tests guarantee an optimal reproduction of the input anomalies in the center of the caldera, between 0 and 3.5 km in depth. High attenuation vertical structures are connected at the surface with the main volcanological features (e.g., the Solfatara and Mofete fumarole fields), and depict vertical Q contrast imaging important geological structures, such as the La Starza fault. These high attenuation volumes extend between the surface and a depth of about 3 km, where a hard rock layer is imaged by the sharp contrast of the quality factors. The retrieved image of the Campi Flegrei has been jointly interpreted taking into account evidence from seismological, geological, volcanological and geochemical investigations. This analysis has allowed an unprecedented view of the feeding systems in this area, and in particular it recognizes the vertically extending, high attenuation structures that correspond to gas or fluid reservoirs beneath Pozzuoli‐Solfatara, Solfatara, Mofete‐Mt. Nuovo and Agnano. This high‐attenuation system is possibly connected with the magma sill revealed at about 7 km in depth by passive travel‐time tomography.
    Description: Published
    Description: B09312
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: 3.1. Fisica dei terremoti
    Description: JCR Journal
    Description: reserved
    Keywords: Campi Flegrei ; gas ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis ; 05. General::05.01. Computational geophysics::05.01.03. Inverse methods
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 18
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    Time-space variation of volcano-seismic events at La Fossa (Vulcano, Aeolian Islands, Italy): new insights into seismic sources in a hydrothermal system (2010)
    Springer
    Details
    Publication Date: 2020-02-24
    Description: We investigated the relationship between volcano-seismic events, recorded at La Fossa crater of Vulcano (Aeolian Islands, Italy) during 2004-2006, and the dynamics of the hydrothermal system. During the period of study, three episodes of increasing numbers of volcano-seismic events took place at the same time as geothermal and geochemical anomalies were observed. These geothermal and geochemical anomalies have been interpreted as resulting from an increasing deep magmatic component of the hydrothermal fluids. Three classes of seismic events (long period, high frequency and monochromatic events), characterised by different spectral content and various similarity of the waveforms, have been recognised. These events, clustered mainly below La Fossa crater area at depths of 0.5–1.1 km b.s.l., were space-distributed according to the classes. Based on their features, we can infer that such events at Vulcano are related to two different source mechanisms: (1) fracturing processes of rocks and (2) resonance of cracks (or conduits) filled with hydrothermal fluid. In the light of these source mechanisms, the increase in the number of events, at the same time as geochemical and geothermal anomalies were observed, was interpreted as the result of an increasing magmatic component of the hydrothermal fluids, implying an increase of their flux. Indeed, such variation caused an increase of both the pore pressure within the rocks of the volcanic system and the amount of ascending fluids. Increased pore pressures gave rise to fracturing processes, while the increased fluid flux favoured resonance and vibration processes in cracks and conduits. Finally, a gradual temporal variation of the waveform of the hybrid events (one of the subclasses of long period events) was observed, likely caused by heating and drying of the hydrothermal system.
    Description: Published
    Description: 803-816
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: Volcano seismology ; Vulcano Island ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 19
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    Distribution of volcanic earthquake recurrence intervals (2010)
    American Geophysical Union
    Details
    Publication Date: 2017-04-04
    Description: We analyze the distribution of volcanic earthquake recurrence intervals in the Vesuvio, Campi Flegrei, and Hawaii regions and compare it with tectonic recurrence rates in California. We find that the distribution behavior is similar for volcanic and tectonic seismic events. In both cases, the recurrence interval distributions collapse onto the same master curve if time is rescaled by the average occurrence rate. This implies that both phenomena have the same temporal organization, and it is possible to adopt for volcanic areas that the same occurrence models used for tectonic regions.
    Description: Published
    Description: B10309
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: volcanic earthquake ; recurrence intervals ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 05. General::05.01. Computational geophysics::05.01.04. Statistical analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 20
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    Detachment depth revealed by rollover deformation: An integrated approach at Mount Etna (2010)
    American Geophysical Union
    Details
    Publication Date: 2017-04-04
    Description: Flank instability is common at volcanoes, even though the subsurface structures, including the depth to a detachment fault, remain poorly constrained. Here, we use a multidisciplinary approach, applicable to most volcanoes, to evaluate the detachment depth of the unstable NE flank of Mt. Etna. InSAR observations of Mount Etna during 1995–2008 show a trapdoor subsidence of the upper NE flank, with a maximum deformation against the NE Rift. The trapdoor tilt was highest in magnitude in 2002–2004, contemporaneous with the maximum rates of eastward slip along the east flank. We explain this deformation as due to a general eastward displacement of the flank, activating a rotational detachment and forming a rollover anticline, the head of which is against the NE Rift. Established 2D rollover construction models, constrained by morphological and structural data, suggest that the east‐dipping detachment below the upper NE flank lies at around 4 km below the surface. This depth is consistent with seismicity that clusters above 2–3 km below sea level. Therefore, the episodically unstable NE flank lies above an east‐dipping rotational detachment confined by the NE Rift and Pernicana Fault. Our approach, which combines short‐term (InSAR) and long‐term (geological) observations, constrains the 3D geometry and kinematics of part of the unstable flank of Etna and may be applicable and effective to understand the deeper structure of volcanoes undergoing flank instability or unrest.
    Description: This work was partially funded by INGV and the DPC‐INGV project “Flank”, and partially by the ASI (SRV project).
    Description: Published
    Description: L16304
    Description: 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 1.10. TTC - Telerilevamento
    Description: 3.2. Tettonica attiva
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: JCR Journal
    Description: reserved
    Keywords: flank instability ; fault ; InSAR ; Etna ; rollover ; 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous ; 04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous ; 04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones ; 04. Solid Earth::04.04. Geology::04.04.09. Structural geology ; 04. Solid Earth::04.04. Geology::04.04.11. Instruments and techniques ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics ; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk ; 05. General::05.08. Risk::05.08.99. General or miscellaneous
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  • 21
    Electronic Resource
    Electronic Resource
    Masthead (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953) 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250101
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  • 22
    Electronic Resource
    Electronic Resource
    Temperaturmessung in chemischen Betrieben (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 1-11 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Weiterentwicklung der industriell angewendeten Meßtechnik in der chemischen Industrie hat auch in der TemperaturMeßtechnik wesentliche Neuerungen gebracht, deren jetziger Stand in einer kurzen übersicht zusammengestellt ist. Es werden die Meßelemente, die Meßgeräte und die wesentlichsten Schaltungsarten besprochen, ferner der Einbau der Temperaturfühler in Apparate und Rohrleitungen. Die in der letzten Zeit vom Fachnormenausschuß Elektrotechnik neu herausgegebenen und z. Z. in Vorbereitung befindlichen Normblätter für dieses Sachgebiet werden aufgeführt und ihr wesentlichster Inhalt mitgeteilt. Der Aufsatz soll den im chemischen Betrieb tätigen Personen als kurzer Leitfaden für die Meßmethoden und einige auftretende Fehlermöglichkeiten dienen.
    Additional Material: 25 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250102
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  • 23
    Electronic Resource
    Electronic Resource
    Gewinnung von Blausäure und Cyaniden aus Koksofengas (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 18-21 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Da die Blausäure in großem Maßstab als Ausgangsmaterial für organische Synthesen verwendet wird, ist man auch dazu übergegangen, sie aus Koksofengas zu gewinnen. Eine in den USA erstellte Anlage wird ausführlich beschrieben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250104
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  • 24
    Electronic Resource
    Electronic Resource
    Verhalten „kohlenoxydfester“ Werkstoffe gegenüber Wassergas bei extremen Bedingungen. Teil II (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 21-22 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Als Ergänzung zu einer früheren Veröffentlichung1 wurde das Verhalten von 14 legierten Metallstäben bei Temperaturen zwischen 400 und 500°C in strömendem Wassergas von 300 at geprüft.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250105
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  • 25
    Electronic Resource
    Electronic Resource
    Das Multiplikationsprinzip für Trenn- und KonzentrierungsvorgängePlenar - Vortrag, gehalten anläßlich der ACHEMA X in Frankfurt a. M. am 22. Mai 1952. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 12-18 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Das Multiplikationsprinzip für Trenneffekte wird am Beispiel der Destillation erläutert, und die entsprechenden Gleichungen für die Betriebsbedingungen werden angegeben. Sie lassen sich durch Anpassung der Parameter grundsätzlich auf alle nach dem Haarnadel-Gegenstromprinzip ausgeführten Trennvorgänge übertragen.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250103
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  • 26
    Electronic Resource
    Electronic Resource
    Praktische Erfahrungen mit Rohrleitungsanlagen in chemischen Betrieben (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 23-26 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Beim Bau und Betrieb von Rohrleitungsanlagen, insbesondere von Dampfrohrleitungen, in Werken der chemischen Industrie sind stets Eigenart, Betriebsweise und örtliche Lage der angeschlossenen Apparate zu berücksichtigen. An Hand praktischer Beispiele, aus Werken verschiedener Industriezweige stammend, wird diese Forderung erläutert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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    Der Schneidvorgang in der Zerkleinerungstechnik von Weichstoffen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 33-35 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nach einleitenden Bemerkungen zur Problematik des Schneidens von Weichstoffen in der Zerkleinerungstechnik werden Definitionen elementarer Grundgrößen angegeben, die für den Schneidvorgang maßgebend sind. Es wird die Existenz eines optimalen Schnittwinkels an zwei experimentellen Beispielen mit typisch entgegengesetztem Verhalten diskutiert. Abschließend werden weitere maßgebende Zusammenhänge angegeben.
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    Einfache Methode zur Spannungskonstanthaltung von Colorimeter- und Photometer-Lichtquellen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 35-38 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zur Stabilisation der Spannung an Colorimeter- bzw. Photometerlampen werden einfache Schaltungen angegeben, welche neben einem Eisenwasserstoff Widerstand noch Widerstände mit negativer Charakteristik (z. B. Kohlenfadenlampen) parallel zur Glühlampe enthalten; dadurch wird die Regelwirkung der Anordnung wesentlich verbessert.
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    URL: http://dx.doi.org/10.1002/cite.330250109
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    Die Nachwuchsausbildung auf dem Gebiet der chemischen Technik - eine Notwendigkeit. Inhalt und Ergebnisse einer Aussprache am 17. Mai 1952 im Dechema-Haus Frankfurt/M. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 27-32 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Verschiedene Fakultäten bilden in Deutschland Ingenieure und Chemiker in der Chemieingenieur-Technik heran. Um die Zusammenarbeit beider in der Praxis möglichst gut vorzubereiten, bedarf es einer stets erneuten Diskussion der Unterrichtsziele, unter Einschluß von Grenzgebieten wie technischer Physik und praktischer Mathematik und unter besonderer Berücksichtigung der eine Mittlerstellung einnehmenden physikalischen Chemie. Am 17. Mai 1952 haben sich anläßlich der Frankfurter Tagungen Hochschullehrer aller beteiligten Fachrichtungen in größerer Zahl zu einer solchen Aussprache zusammengefunden, die durch grundlegende Referate vom Standpunkt des Verfahrensingenieurs, des chemischen Technologen und des physikalischen Chemikers eingeleitet wurde.
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    „Kunststoffe 1952“ (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 38-43 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250110
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    Versammlungsberichte (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 43-48 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250111
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    Umschau (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 48-51 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/cite.330250112
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    Normung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 51-51 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/cite.330250113
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    Unfallverhütung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 51-51 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250114
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    Neue Bücher (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 52-52 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250115
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  • 36
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    Zeichenrechtliche Gleichartigkeit von Roh- oder Hilfsstoffen und Fertigwaren (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 53-53 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1002/cite.330250116
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    Wirtschaftliches aus der Chemischen Technik (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 54-55 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250117
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    Wirtschaftsnachrichten (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 56-60 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250118
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    Masthead (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953) 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250201
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    200-stufige, vollautomatische Apparatur zur fraktionierten Gegenstromverteilung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 66-72 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Verleihung des Nobel-Preises für 1952 hat gezeigt, welche Bedeutung der Gegenstromverteilung zukommt. Nach Anwendungsbeispielen der Gegenstromverteilung, erneuter Erläuterung des Prinzips aller Verteilungsvorgänge und Angabe von Rechenhilfen für ihre Vorausberechnung und Auswertung wird eine vollautomatische Apparatur zur fraktionierten Gegenstromverteilung nach dem von Craig und Grubhofer etwa gleichzeitig aufgezeigten Prinzip beschrieben. Die Vorzüge der Apparatur, die seit September 1952 in Betrieb ist und ununterbrochen ohne ständige Aufsicht läuft, werden durch Verteilungskurven belegt. Erfahrungen, die in den letzten drei Jahren gesammelt wurden, werden mitgeteilt.
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    Edelmetall-Legierungen mit besonderer Beständigkeit gegen starke MineralsäurenDieser Beitrag erschien auch in der „Degussa-Festschrift.“ (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 61-65 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden zwei Gruppen von Edelmetail - Legier ungen beschrieben, die sich bereits seit langem für Apparateteile, bei denen höchste Korrosionsbeständigkeit gefordert werden muß, bewährt haben und in Sonderfällen auch in Zukunft nicht zu entbehren sein werden: Platin und Platin-Legierungen bzw. Gold und Gold-Legierungen. Sodann wird über Versuche mit Au-Ag-Pd-Legierungen berichtet, die bemerkenswert hohe Korrosionsbeständigkeit gegen Salzsäure und andere starke Mineralsäuren aufweisen. Die neuen Legierungen sind imstande, in gewissen Fällen Platin und hochwertige Edelmetall-Legierungen zu ersetzen.
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    Neues Verfahren zur Gewinnung von Furfurol aus Haferspelzen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 81-88 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird ein Überblick über einen neuen Furfurol-Gewinnungsprozeß und über die Erarbeitung seiner optimalen Bedingungen gegeben. Der Prozeß erbringt in einem Arbeitszyklus von etwa 2 ½ h bei nur 1 ½-stündiger Dampfzuführung 9 bis 9,4% Furfurol aus Haferspelzen, bzw. 10,2 bis 10,5% Furfurol in einem Arbeitszyklus von höchstens 4 h bei nur dreistündiger Dampfzuführung. Das Verfahren erübrigt die Anschaffung kostspieliger, druckbeständiger Reaktionsgefäße und erfordert verhältnismäßig geringen Zeit- und Energieaufwand. Die Laboratoriumsversuche lassen darauf schließen, daß Reaktionsgefäße verwendet werden können, die mit keinem besonderen Schutz gegen den Angriff der Säure ausgestattet werden müssen. Wegen des geringen Aufwandes wird das Verfahren vor allem dann in Betracht kommen, wenn sperrige Rohmaterialien örtlich in nicht so großen Mengen anfallen, um die bisherigen Verfahren wirtschaftlich anwenden zu können.
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    Leistung und Wirkung von Rektifizier-Dampfprall- und GlockenbödenVorgetragen auf der Arbeitstagung des Arbeitsausschusses „Destillier- und Rektifiziertechnik“ im VDI-Fachausschuß Verfahrenstechnik am 17. und 18. Oktober 1952 in Boppard; vgl. den Tagungsbericht diese Ztschr. 25, 45 [1953]. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 73-80 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In dem Bewährungs-Wettstreit zwischen Glocken- und Siebböden sowie Füllkörpern scheinen letztere in der jüngsten Zeit aufgeholt zu haben. In ihrer Verwendbarkeit zur Stofftrennung unter sehr niedrigen, absoluten Drucken sind sie unübertroffen. Dennoch fehlt es nicht an Vorschlägen, das Anwendungsgebiet des Glockenbodens durch neuartige konstruktive Maßnahmen zu erweitern. Ein solcher Vorschlag stellt der Dampfprallboden dar. Über seine Belastbarkeit und seinen Wirkungsgrad wird berichtet. Ein Vergleich mit dem Glockenboden führt zu Betrachtungen über den Einfluß des Säulendurchmessers und der Glockenzahl. Versuchsergebnisse zeigen deren günstigsten Wert. Folgerungen aus diesem liefern sodann erstmalig einen theoretisch begründeten Zusammenhang zwischen Belastbarkeit, Bodenabstand und physikalischen Größen, welcher mit früher erhaltenen Versuchsergebnissen gut übereinstimmt.
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    Berichtigungen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 88-88 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1002/cite.330250206
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  • 45
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    Versammlungsberichte (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 92-98 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1002/cite.330250208
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  • 46
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    Apparat zur wärmebeschleunigten Mikrodiffusion (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 89-92 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Durch Anlegen eines Temperaturgefälles wird in einer neuartigen Apparatur der Unterschied der Partialdrucke der flüchtigen Substanz in den Lösungen vergrößert und durch Wärmekonvektion ein Gaskreislauf erzeugt, mit dem die flüchtige Substanz schnell von einer Lösung zur anderen überführt wird.
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    Umschau (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 98-105 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 8 Ill.
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    Normung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 105-107 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Unfallverhütung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 108-108 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Neue Bücher (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 108-108 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250212
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    Gewerblicher Rechtsschutz (1953)
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    Chemie Ingenieur Technik - CIT 25 (1953), S. 109-109 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1002/cite.330250213
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    Wirtschaftliches Aus Der Chemischen Technik (1953)
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    Chemie Ingenieur Technik - CIT 25 (1953), S. 109-112 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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    Masthead (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953) 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250301
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    Theo Goldschmidt zum 70. Geburtstag (1953)
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    Chemie Ingenieur Technik - CIT 25 (1953), S. 113-114 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    URL: http://dx.doi.org/10.1002/cite.330250302
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    Über die Vermischung des Strömungsmediums in Flüssigkeits-Wirbelschichten (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 114-124 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In wasserdurchströmten Partikelschichten aus Glasperlen, Preßstoffkugeln und Tonkugeln wird die Verbreiterung eines Salzsäure- und eines Warmwasserstrahls gemessen. Das Konzentrationsfeld wird mit einer kleinen Elektrodenanordnung zur Messung der elektrischen Leitfähigkeit, das Temperaturfeld mit der Lötstelle eines Thermoelementes ausgefahren. Die eingeführten Indikatorströme verbreitern sich formal gemäß den Diffusionsgesetzen, aus den gemessenen Verteilungsprofilen lassen sich daher „Vermischungskoeffizienten“ gewinnen. Die Auswertungsmethode, welche über die hier behandelten Fälle hinaus von allgemeinerer Bedeutung ist, wird ausführlich dargestellt. Auf die grundsätzlichen Unterschiede zu Gas-Wirbelschichten wird hingewiesen, und anwendungstechnisch wichtige Gesichtspunkte werden herausgearbeitet.
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    Zur Theorie der azeotropen Gemische (1953)
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    Chemie Ingenieur Technik - CIT 25 (1953), S. 133-136 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Das Dampfdruckgleichgewicht von Zweistoffsystemen wird von kinetischen Gesichtspunkten aus betrachtet. Es ergibt sich dabei, daß sich azeotrope Gemische bei der Molekulardestillation nicht azeotrop zu verhalten brauchen. Andererseits kann für ein Gemisch, das bei normaler Destillation keinen azeotropen Punkt besitzt, bei Molekulardestillation ein solcher vorhanden sein. Gemische mit zwei (normalen) azeotropen Punkten sind am ehesten bei Systemen mit stark realer Dampfphase zu erwarten.
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    Zur dynamischen Methode der Bestimmung von Dampf-Flüssigkeits-Gleichgewichten (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 125-133 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Siedepunktsmessungen mit einer verbesserten Umlaufapparatur an den Systemen Benzol-Anilin und Cyclohexan-Anilin bei verschiedenen Gesamtdrucken zeigen, daß bei derartigen Gemischen mit großer Siedepunktsdifferenz der Komponenten auch bei Ausschaltung aller denkbaren Fehlerquellen und unter Berücksichtigung der Fugazitätskorrekturen keine thermodynamisch konsistenten Werte für die Aktivitätskoeffizienten erhalten werden, obwohl die Messungen reproduzierbar sind. Der sich einstellende stationäre Zustand entspricht danach offenbar nicht dem wahren Gleichgewichtszustand. Auch die von Rosanoff entwickelte Extrapolations methode ist für derartige Gemische nicht geeignet. Die Ergebnisse dynamischer Meßmethoden sind deshalb in solchen Fällen sehr kritisch zu bewerten.
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    Zerkleinerung von Weichstoffen in der Lebensmittelverarbeitung (II)Zusammenfassung der Vortrage vor dem Arbeitsausschuß Fleischwirtschaft im VDI-Fachausschuß für Lebensmitteltechnik am 18./19. April 1951 in Remscheid und vor der VDI-Hauptversammlung am 2. August 1951 in Hannover. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 137-141 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Um den Zerkleinerungsvorgang von Fleisch wirtschaftlich und materialgerecht zu gestalten, ist es notwendig, den Zusammenhang zwischen physikalischen Stoffwerten und physikalischen Einflüssen während des mechanischen Prozesses zu kennen. Struktur und Verhalten der Biokolloide werden an Hand von Fließkurven von Fleischbrei mit unterschiedlichem Wasser- und Fettgehalt erläutert.
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/cite.330250306
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    Berichtigung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 142-142 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250308
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    Kontinuierliche Gewinnung reiner Cer-Verbindungen in einer Gegenstrom-Extraktionskolonne7. Mitt. über die Trennung anorganischer Stoffgemische durch Verteilung zwischen zwei Lösungsmitteln.  -  6. Mitt. vgl. Anm. 1. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 141-142 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird eine Apparatur beschrieben, mit der im Gegenstromverfahren aus einer salpetersauren Lösung von Ceriterden mit Diäthyläther das Cer4+ extrahiert werden kann.
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    Tätigkeitsbericht 1952 des Fachausschusses Verfahrenstechnik im VDI (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 143-143 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250309
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    Versammlungsberichte (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 148-152 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250311
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    Die „reversible“ Adsorption als Mittel zur Vorreinigung und Zerlegung von Gasgemischen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 144-148 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An Hand von Diagrammen und schematischen Ausführungsbeispielen werden Grundlagen sowie apparative und verfahrensmäßige Voraussefzungen für eine annähernd reversible Gasreinigung und Trennung durch Adsorption zwecks extremer Reinigung des behandelten Gases erläutert. Die Voraussetzungen sind: Kombination von Adsorbern mit Wärmeaustauschern an beiden Enden des Adsorbers, Be- und Entladungsbegrenzung des Adsorbers sowie Gegenstromentladung mit adsorbatfreien Spülgasen.
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    Normung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 159-159 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250313
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    Unfallverhütung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 159-159 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250314
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    Umschau (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 152-158 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 7 Ill.
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    URL: http://dx.doi.org/10.1002/cite.330250312
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    Neue Bücher (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 160-160 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250315
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    Soda, Ätznatron und Chlor. Ein Produduktionsbild (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 162-164 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250317
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    Die Patentfähigkeit von Zwischenprodukten (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 161-162 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250316
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    Wirtschaftsnachrichten (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 164-168 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250318
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    Masthead (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953) 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250401
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    Die Wandlung des Menschen durch die Technik (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 180-180 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250405
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    Die Prallzerkleinerung in der Verfahrenstechnik (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 179-180 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nach einem Überblick über die Entwicklung der Prallzerkleinerung folgt eine kurze Beschreibung der Prallbrecher, ihrer Bauarten, Arbeitsweise, Anwendungsmöglichkeiten sowie ihres Leistungsbedarfs. Schließlich werden Verschleißfragen und Wirtschaftlichkeit der Prallzerkleinerung erörtert.
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    Temperaturmessung bei Hochtemperatur-ÖfenVorgetragen auf der Tagung „Hochtemperaturtechnik“ des Arbeitsausschusses für „Hochtemperaturtechnik“ im VDI-Fachausschuß Verfahrenstechnik zusammen mit dem Haus der Technik e. V. Essen am 10. Oktober 1952 in Essen. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 169-176 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nach einem Überblick über Aufgaben und Anwendungsbeispiele der Temperaturmeßtechnik an Hochtemperaturöfen werden Fragen der jetzt abgeschlossenen Normung auf diesem Gebiet erörtert sowie Hinweise über die Größenordnung der Meßfehler bei den verschiedenen Meßverfahren gegeben. Die einzelnen Meßverfahren und Meßgeräte werden ausführlich besprochen und hinsichtlich ihres Anwendungsbereiches gegeneinander abgegrenzt.
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    Modellberechnung von brennstoffbeheizten Industrie-ÖfenGekürzte Fassung eines Vortrages auf der Tagung „Hochtemperaturtechnik“ des Arbeitsausschusses Hochtemperaturtechnik im VDI-Fachausschuß Verfahrenstechnik, veranstaltet zusammen mit dem Haus der Technik e. V. Essen am 10. Okt. 1952 in Essen. Ausführliche Veröffentlichung in Techn. Mitt. 45, 388 [1952]. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 177-178 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Modellgesetze der Ähnlichkeitsphysik werden zur Bemessung und Beurteilung der brennstoffbeheizten Industrieöfen angewendet. Die Beziehungen bieten einen Weg, die komplizierten Zusammenhänge des Ofenbaues in einfacher Weise darzustellen; damit können gebräuchliche Ofentypen nach deren Betriebsgrößen leicht beurteilt und Hinweise für die Entwicklung von Neukonstruktionen gegeben werden.
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    Über die Entwicklung und Fertigung von Hochdruckhohlkörpern in Mehrteilbauweise bei den Stahlwerken (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 184-184 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250407
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    Mechanische Industrie-Entstauber (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 185-191 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bau und Wirkungsweise der Apparate und Vorrichtungen zur Abscheidung von Staub und feinen Flüssigkeitsteilchen werden beschrieben. Die theoretischen Grundlagen für die Abscheidewirkung werden angegeben. Für die verschiedenen Abscheider werden die auf die Gasleitung bezogenen Kosten, die ungefähren Grenzen der Abscheidemöglichkeit, der Druckverlust und die Preise für amerikanische und deutsche Verhältnisse angegeben.
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    Ein magnetischer Sauerstoff-Messer (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 191-191 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/cite.330250409
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    Neue Erkenntnisse im Bau von DrehofenlagerungenGekürzte Fassung eines Vortrages, gehalten auf der Tagung des Arbeitsausschusses „Konstruktionselemente des Apparatebaues“ im VDI-Fachausschuß Verfahrenstechnik am 26. März 1952 in Bad Kreuznach. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 181-183 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Tatsache, daß im Dauerbetrieb selbst die besten Drehofenfutter zermürbt werden, falls die Lagerungen und Ofenlängsführungen nicht den an sie gestellten hohen Anforderungen gewachsen sind, führte zu neuartigen Drehofenbauarten, die durch eine grundsätzliche Verwendung balliger und oberflächengeschmierter Tragrollen gekennzeichnet sind.
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    Feinmahlung von Glas in verschiedenen Mühlentypen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 196-198 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden Versuche beschrieben, um feine Glaspulver der Teilchengröße von 10 μ und weniger in der Kugelmühle, Schwingmühle und Analysenreibemaschine herzustellen. Der zeitliche Verlauf des Mahlvorganges bei diesen Mühlenarten wurde unter möglichst vergleichbaren Verhältnissen dispersoidanalytisch aufgenommen und graphisch im Rosin - Rammler - Bennett - Diagramm abgebildet. Dabei wurden verschiedene Mahlbedingungen angewandt. Für Laboratoriumsverhältnisse ergab sich hinsichtlich der besten Wirksamkeit der drei Mühlen die Reihenfolge: Reibemaschine, Schwingmühle, Kugelmühle.
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    Schwefelkohlenstoff-Tester zur quantitativen Mikrobestimmung von Schwefelkohlenstoff in Luft (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 192-196 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nach einem Hinweis auf die allgemeine Bedeutung automatischer und halbautomatischer Gasanalysatoren und einer kurzen Zusammenfassung der verschiedenen Bestimmungsmöglichkeiten von Schwefelkohlenstoff in den Arbeitsräumen von Zellwollfabriken wird eine halbautomatische Apparatur beschrieben, die sich in der Praxis bereits gut bewährte. Verwendet wird die bekannte Reaktion, die zum intensiv gelb gefärbten Kupferdiäthyldithiocarbamat führt.Im einzelnen werden Details über zwei Probenentnahmegeräte sowie über ein hochempfindliches Spektralcolorimeter mitgeteilt. Die beschriebene Anordnung gestattet einen Nachweis bis herab zu 6 γ CS2/l Luft. Die Genauigkeit beträgt etwa ± 6%; für eine komplette Bestimmung sind etwa 8 bis 10 min erforderlich.
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    Versammlungsberichte (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 203-207 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Normung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 214-214 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Umschau (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 207-213 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
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    Universal-Extraktor (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 199-200 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird eine Apparatur beschrieben, mit der sowohl feste Stoffe als auch Flüssigkeiten mit spezifisch leichten oder schweren Extraktionsmitteln extrahiert werden können.
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    Unfallverhütung (1953)
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    Chemie Ingenieur Technik - CIT 25 (1953), S. 214-214 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1002/cite.330250417
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    Entmischung gasdurchströmter Partikelschichten und deren Zusammenhang mit der Wirbelschichtzähigkeit (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 201-203 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In gasdurchströmten Wirbelschichten aus Partikeln zweier verschiedener Größenfraktionen findet durch Austrag des Feinstaubes eine Entmischung statt. Im stationären Gleichgewichtszustand erreicht das Feinkorn in der Schicht und in der Wolke ein ganz bestimmtes Verteilungsverhältnis. Die Entmischung setzt bei Erreichen einer Strömungsgeschwindigkeit ein, welche die Größe der Fallgeschwindigkeit der Feinstaubpartikeln besitzt, und verläuft analog zu einem Verdampfungsvorgang. Sie läßt sich als Reaktion 1. Ordnung beschreiben, wobei die Reaktionsgeschwindigkeit mit der 4. Potenz von der Strömungsgeschwindigkeit abhängt. Bei Unterschreiten eines kritischen Reststaubgehaltes in der Wirbelschicht fällt die Entmischungsgeschwindigkeit gegen dieses Gesetz ab, da die „Diffusion“ des Feinstaubgehaltes innerhalb der Schicht durch das überwiegende Grobkorn behindert wird. Es gelingt, diese Erscheinung mit Messungen der Wirbelschichtzähigkeit in Zusammenhang zu bringen und diesen durch eine Modellvorstellung zu deuten.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250413
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    Neue Bücher (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 215-216 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250418
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  • 89
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    Masthead (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953) 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250501
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  • 90
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    Alt-Warenzeichen Deutscher im Ausland (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 217-218 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250419
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  • 91
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    Wirtschaftliches Aus Der Chemischen Technik (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 218-220 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250420
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  • 92
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    Pumpe für chemisch aggressive Stoffe (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 227-227 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250503
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  • 93
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    Effektive Zähigkeit und Inhomogenität von Wirbelschichten (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 229-238 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Tendenz gasdurchströmter Schüttgutschichten, im aufgewirbelten (fluidized) Zustand instabile, turbulente Partikelbewegungszustände zu zeigen  -  meist als „Inhomogenität“ bezeichnet  -  wurde von verschiedenen Autoren mit der effektiven Zähigkeit des Wirbelschichtbreies in Zusammenhang gebracht. Es gelingt, mit Hilfe der Löchertheorie für Flüssigkeiten eine Formel für diese „Wirbelschichtzähigkeit“ zu entwickeln, die die Abhängigkeit von der Partikelgröße, der Schichtexpansion, dem Dichteverhältnis und der Strömungsgeschwindigkeit sinnvoll wiedergibt. Die Übereinstimmung mit groben Messungen ist zufriedenstellend. Aus den energetischen Verhältnissen bei der Bildung von Blasen im Schichtinnern wird ein Inhomogenitätsgrad hergeleitet, der die Wirbelschichtzähigkeit, die Zwischenpartikelreibung und die Schichtexpansion als Faktoren enthält. Die Wirbelschichtzähigkeit läßt sich mit einer von Wilhelm angegebenen Kenngröße und der Inhomogenitätsgrad mit der Froude schen Kennzahl in engen Zusammenhang bringen. Die Zwischenpartikel-Reibungswerte in gas- und flüssigkeitsdurchströmten Wirbelschichten werden durch eine als „Schmierfähigkeit“ definierte Größe untereinander verknüpft.
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/cite.330250505
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  • 94
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    Wärmeleitung in hochverdichteten Gasen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 238-244 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In den letzten Jahren sind die experimentell gefundenen Ergebnisse über Wärmeleitung in hochverdich teten Gasen beträchtlich vermehrt worden. Die bisher bekannt gewordenen Daten für Luft, Helium, Argon, Wasserstoff, Stickstoff, Sauerstoff, Methan, Äthylen, Kohlendioxyd, Wasser, Benzol, Toluol und Xylol werden ausgeglichen und als Isobaren oder Isothermen dargestellt. Aus der gaskinetischen Erläuterung der Gründe für das Anwachsen der Wärmeleitfähigkeit unter hohem Druck folgen Möglichkeiten, ihre Beträge abzuschätzen. Eine neue Näherungsgleichung wird vorgeschlagen, welche die Druckabhängigkeit der Wärmeleitfähigkeit mit derjenigen des spezifischen Volumens und der spezifischen Wärme verknüpft. Mit ihrer Hilfe wird die Wärmeleitfähigkeit gasförmigen Ammoniaks bis zu 60 kg/cm2 und 150°C vorausberechnet.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250506
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  • 95
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    Schnellmethode und Gerät zur Analyse von Emulsionen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 228-228 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die beschriebene Apparatur ist eine Kombination von einem Extraktions- und einem Wasserbestimmungsapparat. Sie gestattet in einem Arbeitsgang und in kurzer Zeit den Gehalt an Wasser, Bindemittel und Füllstoff von Emulsionen zu bestimmen. Die Analysenmethode wird angegeben.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250504
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  • 96
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    Berichtigungen (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 248-248 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250508
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  • 97
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    Gewinnung von Brom aus Meerwasser (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 245-248 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In den USA wurde ein großtechnisches Verfahren zur Brom-Gewinnung entwickelt. Dabei wird das in geringen Mengen im Meerwasser enthaltene Brom bei pH = 3,5 mit Chlor in Freiheit gesetzt und mit Luft ausgeblasen. Nach Reduktion zu Bromwasserstoff mit Schwefeldioxyd wird auf das 3000- bis 4000fache angereichert und auf Brom aufgearbeitet. Es werden die automatischen Kontroll- und Regeleinrichtungen beschrieben, die das Verfahren wirtschaftlich gestalten.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250507
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    Die Berechnung von Wärmeaustauschern mit Hilfe dimensionsloser KennzahlenVorgetragen auf der Sitzung des Arbeitsausschusses „Wärmeaustauscher und Verdampfer“ des VDI-Fachausschusses Verfahrenstechnik am 26. März 1952 in Bad Kreuznach; vgl. a. diese Ztschr. 24, 363 [1952]. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 221-227 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Ähnlichkeitstheorie hat den Weg gezeigt, die Gesetzmäßigkeiten des Wärmeüberganges mit Hilfe dimensionsloser Kennzahlen auszudrücken. Die Anzahl der zur eindeutigen Beschreibung eines Vorganges notwendigen Kenngrößen ist recht verschieden, sie ist z. B. besonders groß bei komplizierten Austauscherformen. Bei der Zusammenfassung der Einzelfaktoren zu Kennzahlen hat man gewisse Freiheiten, die man dazu benützen kann, die Gesetzmäßigkeiten bei der Berechnung von Wärmeaustauschern in einer möglichst zweckmäßigen Form darzustellen. An einem Beispiel wird gezeigt, daß die Rechnungen sich verhältnismäßig einfach durchführen lassen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250502
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  • 99
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    Versammlungsberichte (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 253-260 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250510
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    Unfallverhütung (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 267-267 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250513
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