Zobrazeno 1 - 10 of 33 pro vyhledávání: '"E. Untersteller"'
2
Total Synthesis of Brevetoxin B. 3. Final Strategy and Completion
Autor: Floris P. J. T. Rutjes, M. Sato, E. Untersteller, Kyriacos C. Nicolaou, Emmanuel A. Theodorakis, J. Tiebes
Publikováno v: Journal of the American Chemical Society. 117:10252-10263
The final strategy for the total synthesis of brevetoxin B (1) according to the retro synthetic analysis shown in Scheme 1 is described. Starting with the tetracyclic ring system 8 (DEFG), the construction of the C ring was accomplished via an intram
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::962b760fa5768f7bc058744a53fa2f2f
https://doi.org/10.1021/ja00146a010
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7
Anomalous time behaviors of remanent and normal magnetizations in spinel spin glassGa0.8Fe0.2NiCrO4
Autor: W. Treutmann, E. Untersteller, J. K. Srivastava
Publikováno v: Physical Review B. 71
Complex spin glass behavior is found to be present in a spinel system ${\mathrm{Ga}}_{0.8}{\mathrm{Fe}}_{0.2}\mathrm{Ni}\mathrm{Cr}{\mathrm{O}}_{4}$ where the cations occupy two different sites, namely the tetrahedrally coordinated A site and the oct
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86e920d682af5abf1b88a216ab56c545
https://doi.org/10.1103/physrevb.71.174429
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9
Anisotropic spin glass pseudobrookite: Evidence for transverse freezing and possible implications
Autor: J. K. Srivastava, W. Treutmann, E. Untersteller
Publikováno v: Physical Review B. 68
We provide here clear evidence of transverse freezing in the anisotropic spin glass ${\mathrm{Fe}}_{2}{\mathrm{TiO}}_{5}$ from remanent magnetization studies. In addition, we find anomalous time dependences for zero field cooled and field cooled magn
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::416c754464ac820c37246cb574893d73
https://doi.org/10.1103/physrevb.68.144404
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10
A peer-to-peer architecture for the collaborative construction of scientific theories by virtual communities
Autor: S.A. Cerri, C. Costa, F. Paraguacu, E. Untersteller
Publikováno v: International Conference on Information Technology: Research and Education, 2003. Proceedings. ITRE2003..
Needs for bidirectional nonvertical access to information and learning are evident and urgent. We cannot impose pervasive, huge investments to developing country's users forcing them to wait. Peer-to-peer architectures integrated with interoperable X
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29b856c494b80729a0a2be48b2969ce6
https://doi.org/10.1109/itre.2003.1270690
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