Report and preliminary results of METEOR-Cruise M 38/1, Las Palmas - Recife, 25.1.-1.3.1997 With appendix: core descriptions: METEOR-Cruise M 37/1

SIGLEAvailable from TIB Hannover: RO 7630(94) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Bericht und erste Ergebnisse der METEOR-Fahrt M 23/1: Kapstadt - Rio de Janeiro, 4.2.1993-25.2.1993

METEOR cruise 23 was projected to take samples from the water column and the sea floor as well as to record the sediment structures using geoacoustic methods. The results will be integrated within the long-term special research project Sonderforschungsbereich 261, which aims at the reconstruction of mass budgets and current systems in the South Atlantic for late Quaternary times. Micropaleontological geochemical, sedimentological, geophysical and isotopic characteristics of the sampled materials are determined both on board and subsequent to the cruise in the laboratories at Bremen University. During the first leg of METEOR cruise no. 23 a transect through the Southern South Atlantic Ocean was performed at latitudes of 29 S to 37 S between South Africa and South America. The marine geologic, geochemical and geophysical studies were carried out on surface and cored sediment material collected at the South African Continental Margin, in the Cape Basin, on the Southern Walvis Ridge and across the Mid-Atlantic Ridge. Continuous sediment and bathymetric echosounder data were recorded along the track to provide information about the structural and tectonic framework of the study areas. (orig.)SIGLEAvailable from TIB Hannover: RO 7630(42) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDeutsche Forschungsgemeinschaft (DFG), Bonn (Germany); Bundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Propentdyopent: the scaffold of a heme metabolite as an electron reservoir in transition metal complexes

The dipyrrin-1,9-dione scaffold of heme metabolite propendyopent coordinates late transition metals (Co, Ni, Cu, and Zn) forming homoleptic, pseudo-tetrahedral complexes. Electrochemical and spectroscopic studies reveal that the monoanionic, bidentate ligands behave as electron reservoirs as the complexes reversibly host one or two ligand-based radicals.We gratefully acknowledge Drs Jonathan Loughrey and Sue Roberts for assistance with initial electrochemical measurements and analysis of X-ray diffraction data, respectively. This work was supported by the University of Arizona and by the National Science Foundation ( CAREER grant 1454047 to E.T.).Open Access Article--RSC Gold.This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]

Report and preliminary results of METEOR-cruise M 29/1: Buenos-Aires -Montevideo, 17.6.-13.7.94

During METEOR cruise M 29/1 the shipboard acoustical systems HYDROSWEEP and PARASOUND were used on a 24 hour schedule to record continuous high resolution bathymetric and sediment echosounding profiles. The digitization and storage of the echosounding seismograms were realized by usage of the software package PARADIGMA (Spiess, 1992). The underway geophysical program along several profiles on the Argentine continental margin serves the long term research program Sonderforschungsbereich 261, the complete coverage of the South Atlantic Ocean with a net of sampling stations and geophysical profiles. Along the profiles the recorded data provided valuable information for finding suitable coring stations from different sedimental environments on the continental margin, which can be well discriminated by their different echotypes. (orig.)Available from TIB Hannover: RO 7630(58) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDeutsche Forschungsgemeinschaft (DFG), Bonn (Germany)DEGerman