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  • 1
    Online Resource
    Online Resource
    Metal catalyzed cascade reactions (2006)
    Berlin Heidelberg : Springer-Verlag GmbH
    Details Availability
    Keywords: Catalysis ; Chemistry, Organic ; Chemistry, inorganic ; Chemistry ; Aufsatzsammlung ; Tandem-Reaktion ; Übergangsmetallkomplexe ; Katalysator
    Description / Table of Contents: Klappentext: Transition metal-catalyzed cascade reactions are an elegant approach to complex molecular scaffolds. Besides their esthetics and increase in structural complexity, they have also become mechanistic challenges for the combination of organometallic elementary steps. As a consequence, cascade reactions have revolutionized synthetic strategies and conceptual thinking. The authors highlight cyclization via carbopalladation and acylpalladation and Heck-pericyclic sequences. They discuss p-allyl palladium-based cascade reactions, Michael-type additions as an entry to transition-metal-promoted cyclizative transformations, and sequential or consecutive palladium-catalyzed processes, and show Pauson-Khand cascades, metal-catalyzed cyclizations of acyclic precursors, as well as cascade and sequential ruthenium-catalyzed transformations. Therefore, the reader finds overview of an exciting and highly dynamic field of a new and innovative methodological concept.
    Type of Medium: Online Resource
    Pages: Online-Ressource (VIII, 339 S.) , zahlr. graph. Darst.
    Edition: Online-Ausg. 2006 Springer eBook Collection. Chemistry and Materials Science
    ISBN: 9783540329596
    Series Statement: Topics in organometallic chemistry 19
    URL: http://dx.doi.org/10.1007/11603696
    URL: http://www.gbv.de/dms/bowker/toc/9783540329589.pdf
    DOI: 10.1007/11603696
    DDC: 540
    RVK:
    VH 9700
    Language: English
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  • 2
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    Estimates of the mean circulation in the deep (〉2,000m) layer of the Eastern North Atlantic (1985)
    Elsevier
    In:  Progress in Oceanography, 14 . pp. 103-127.
    Details
    Publication Date: 2017-07-10
    Description: A total of 131 current meter records of between 6 and 24 month duration are analysed to describe the deep flow field of the eastern North Atlantic from 19° to 54°N and from the Continental Slope to the Mid Atlantic Ridge. Mean flows are weak and may be statistically indeterminate in some records and locations, but appear to indicate cyclonic circulations around the Iberia and Porcupine abyssal plains with a generally southward flow along the Mid Atlantic ridge and a deep northward slope current (where measurements exist) along the eastern boundary. The deepest inflow to the north-eastern basin that has been identified to date takes place through the Discovery Gap of 〉4,700 m sill-depth at 37° 25′N 15° 45′W in the Azores-Portugal ridge. South of that ridge, observations are sparse and no systematic circulation is yet evident. These observations are discussed in relation to recent geostrophic estimates of the deep circulation.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/0079-6611(85)90008-4
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    MKIIIB-CTD: improving its system output (1995)
    Elsevier
    In:  Deep Sea Research Part I: Oceanographic Research Papers, 42 (11-12). pp. 2113-2126.
    Details
    Publication Date: 2017-07-10
    Description: In the Neil Brown Instruments' MKIIIB-CTD (conductivity-temperature-depth profiler), the system's digital outputs for the three basic measurements of temperature, conductivity and pressure typically show some small amplitude deviations from smooth calibrations which should be corrected for to achieve high accuracies, as required, e.g. within the Hydrographic Program (WHP) of the current World Ocean Circulation Experiment (WOCE). These deviations show up as (i) a strong nonlinearity or even discontinuity of several mK close to 0°C in temperature output leading to too high subzero temperatures; (ii) a jump of order 0.002 mS cm−1 in conductivity output when passing the half-range value 32.768 mS cm−1, which causes jumps in the relation of potential temperature and salinity; and (iii) errors in pressure measurements of up to 4 dbar due to mechanical hysteresis and both static and dynamic responses to temperature changes. The existence of these effects is demonstrated, and methods to reduce the associated errors are suggested.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/0967-0637(95)00078-X
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    Long-term changes in the thermocline of the subtropical Northeast Atlantic (33°N, 22°W) (2013)
    Elsevier
    In:  Progress in Oceanography, 116 . pp. 246-260.
    Details
    Publication Date: 2016-10-04
    Description: Highlights: • Unique data set of daily temperature and current measurements over almost 30 years. • Cooling of the thermocline in the 1980s and extensive warming in the 2000s. • Currents indicate northward displacement of N-Atlantic subtropical Gyre in 1990s. • Influence of NAO and ENSO on current regime even in 500 m water depth. Data from almost thirty years of time series observations from a deep-sea mooring Kiel276 (33°N, 22°W), which was operated in the northeast Atlantic Ocean between 1980 and 2009, are studied to reveal information on the long term changes in the upper thermocline. This includes daily records of temperature and currents at two depths (240 m and 500 m). Until 1988, our analysis shows decreasing temperature in the entire thermocline followed by a slight increase at both depths; from 2000 on, extensive warming began at the shallower depth (240 m) and eight years later at the deeper (500 m) level. A northward displacement of the North Atlantic Subtropical Gyre is indicated by both current measurements and calculated kinetic energy between 1991 and 1998 resulting in an altered current regime in terms of absolute velocity and current directions in the last ten years compared to the first twenty years. Coherences of the currents with large scale climatic patterns such as North Atlantic Oscillation and El Niño/ Southern Oscillation evidence the atmospheric impact even at 500 m water depth.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.pocean.2013.07.004
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
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    Cruise summary report ALKOR AL213 (2002)
    IFM-GEOMAR
    In:  IFM-GEOMAR, Kiel, Germany, 4 pp.
    Details
    Publication Date: 2021-01-29
    Description: 14.10.-16.10.2002
    Type: Report , NonPeerReviewed
    Format: text
    Format: text
    Format: image
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    OceanRep: Report - Cruise Report
  • 6
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    Cruise summary report ALKOR AL215 (2003)
    IFM-GEOMAR
    In:  IFM-GEOMAR, Kiel, Germany, 4 pp.
    Details
    Publication Date: 2021-01-29
    Description: 19.02.-21.02.2003
    Type: Report , NonPeerReviewed
    Format: text
    Format: text
    Format: text
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Report - Cruise Report
  • 7
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    Pathways and variability of the Antarctic Intermediate Water in the western equatorial Pacific Ocean. (2005)
    Elsevier
    In:  Progress in Oceanography, 67 . pp. 245-281.
    Details
    Publication Date: 2016-10-05
    Description: In the western equatorial Pacific the low-salinity core of Antarctic Intermediate Water (AAIW) is found at about 800 m depth between potential density levels σθ = 27.2 and 27.3. The pathways of AAIW and the degradation of its core are studied, from the Bismarck Sea to the Caroline Basins and into the zonal equatorial current system. Both historical and new observational data, and results from numerical circulation model runs are used. The observations include hydrographic stations from German and Japanese research vessels, and Eulerian and Lagrangian current measurements. The model is the JAMSTEC high-resolution numerical model based on the Modular Ocean Model (MOM 2). The general agreement between results from the observations and from the model enables us to diagnose properties and to provide new information on the AAIW. The analysis confirms the paramount influence of topography on the spreading of the AAIW tongue north of New Guinea. Two cores of AAIW are found in the eastern Bismarck Sea. One core originates from Vitiaz Strait and one from St. George’s Channel, probably arriving on a cyclonic pathway. They merge in the western Bismarck Sea without much change in their total salt content, and the uniform core then increases considerably in salt content when subjected to mixing in the Caroline Basins. Hydrographic and moored current observations as well as model results show a distinct annual signal in salinity and velocity in the AAIW core off New Guinea. It appears to be related to the monsoonal change that is typically found in the near-surface waters in the region. Lagrangian data are used to investigate the structure of the deep New Guinea Coastal Undercurrent, the related cross-equatorial flow and eddy-structure, and the embedment in the zonal equatorial current system. Results from 17 neutrally buoyant RAFOS floats, ballasted to drift in the AAIW core layer, are compared with a numerical tracking experiment. In the model 73 particles are released at five-day intervals from Station J (2.5°N, 142°E), simulating currents at a moored time series station north of New Guinea. Observed and model track patterns are fairly consistent in space and season. Floats cross the equator preferably north of Cenderawasih Bay, with a maximum range in eddy-motion in this region north of New Guinea. The northward route at 135°E is also reflected in a low-salinity tongue reaching up to 3°N. At that longitude the floats seem to ignore the zonally aligned equatorial undercurrents. Farther to the east (139 145°E), however, the float observations are consistent with low-latitude bands of intermediate currents.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.pocean.2005.05.003
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
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    FS Maria S. Merian Fahrtbericht / Cruise Report MSM 04-1: Meridional Overturning Variability Experiment (MOVE 2006), Fort de France - Fort de France, 02.12. - 21.12.2006 (2008)
    IFM-GEOMAR
    In:  IFM-GEOMAR Report, 17 . IFM-GEOMAR, Kiel, Germany, 41 pp.
    Details
    Publication Date: 2012-07-06
    Type: Report , PeerReviewed
    Format: text
    DOI: 10.3289/ifm-geomar_rep_17_2008
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    OceanRep: Report - Cruise Report
  • 9
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    Cruise Report F.S. ALKOR Cruise No. AL301 02.07. – 05.07.2007 (2007)
    IFM-GEOMAR
    In:  Alkor-Berichte, AL301 . IFM-GEOMAR, Kiel, Germany, 20 pp.
    Details
    Publication Date: 2021-01-28
    Type: Report , NonPeerReviewed
    Format: text
    Format: text
    Format: text
    Format: text
    DOI: 10.3289/CR_AL301
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    OceanRep: Report - Cruise Report
  • 10
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    Cruise Report F.S. ALKOR Cruise No. AL261 (2005)
    IFM-GEOMAR
    In:  Alkor-Berichte, AL261 . IFM-GEOMAR, Kiel, Germany, 17 pp.
    Details
    Publication Date: 2021-01-29
    Description: 12.07.-15.07.2005
    Type: Report , NonPeerReviewed
    Format: text
    Format: text
    Format: text
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    OceanRep: Report - Cruise Report
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