Laterites and paleoclimates. Weathering processes and anthropogenic impact

The European Union of Geosciences held its 9th biannual meeting in Strasbourg, March 23–27, 1997. During this meeting, Symposium No. 63, Weathering Processes: Mineral deposits and soil formation in tropical enÍironments, was merged with Symposium No. 78, Anthropogenic Impact on Weathering processesco-sponsored by IGCP Project 405. The resulting symposium No. 63, Weathering processes and Anthropogenic Impact, was held under the sponsorship of EUROLAT1 and attracted 36 oral and poster presentations and about 100 participants, reflecting the interest of the Earth Sciences community in weathering processes and anthropogenic impact

Nuclear bars and blue nuclei within barred spiral galaxies

Multicolour near IR photometry for a sample of 32 large barred spiral galaxies is presented. By applying ellipse fitting techniques, we identify significant isophote twists with respect to the primary bar axis in the nuclear regions of $\sim$70 \%\ of the sample. These twists are identified in galaxies as late as SBbc and are clearly distinguishable from spiral arm morphology. At most seven of the galaxies with isophote twists are inferred to possess secondary (nuclear) bars, the axis ratios of which appear to correlate with morphological type. The remainder may result from triaxial bulges, or from oblate bulges misaligned with the primary bar. The near IR colour distributions in these data show evidence for (red) circumnuclear star forming rings in 4 galaxies. The majority of the sample (19) also possess striking blue nuclear regions, bluer than typical old stellar populations by $\sim$0.3 mag. in (J--H) and $\sim$0.23 mag. in (H--K). Such blue colours do not appear to correlate with the presence of nuclear rings or pseudo--rings, nor with the activity of the host galaxy (as determined from emission--line spectroscopic characteristics). Several mechanisms to explain this blue colour are considered.Comment: 24 pages plain LaTex( including table captions), 5 tables and 18 figures. Accepted for publication in MNRAS. Paper and tables available via anonymous ftp://143.167.4.101/pub/papers as sqiid-paper.tex and table1,2,3.tex, table4.ps, table5.ps. Figures available as postcript upon request to first Autho

Harvesting Entities from the Web Using Unique Identifiers -- IBEX

In this paper we study the prevalence of unique entity identifiers on the Web. These are, e.g., ISBNs (for books), GTINs (for commercial products), DOIs (for documents), email addresses, and others. We show how these identifiers can be harvested systematically from Web pages, and how they can be associated with human-readable names for the entities at large scale. Starting with a simple extraction of identifiers and names from Web pages, we show how we can use the properties of unique identifiers to filter out noise and clean up the extraction result on the entire corpus. The end result is a database of millions of uniquely identified entities of different types, with an accuracy of 73--96% and a very high coverage compared to existing knowledge bases. We use this database to compute novel statistics on the presence of products, people, and other entities on the Web.Comment: 30 pages, 5 figures, 9 tables. Complete technical report for A. Talaika, J. A. Biega, A. Amarilli, and F. M. Suchanek. IBEX: Harvesting Entities from the Web Using Unique Identifiers. WebDB workshop, 201

Toward understanding the predatory ant genus Myopias (Formicidae: Ponerinae), including a key to global species, male-based generic diagnosis, and new species description

published_or_final_versio

Beidseitige Ertaubung durch Labyrinthitis bei M.Crohn

Zusammenfassung: Vestibulocochleäre Störungen bei chronischen Darmentzündungen sind seltene, aber immer wieder beschriebene Komplikationen oder Manifestationen der Grunderkrankung. Ein 26-jähriger Mann erlitt unter immunsuppressiver Therapie aufgrund eines 6Monate zuvor diagnostizierten M.Crohn einen bilateralen Ausfall der Gleichgewichtsorgane sowie eine bilaterale sensorineurale Hörminderung. Es wurde eine ausführliche Diagnostik (Audiogramm, Sprachaudiogramm, kalorische Vestibularisprüfung, Messung vestibulär evozierter myogener Potenziale, Magnetresonanztomographie) durchgeführt. Therapiert wurde mit Azathioprim, Glukokortikoiden systemisch und intratympanal sowie mit monoklonalen Antikörpern. Darunter zeigte sich ein stark fluktuierender, aber progredienter Verlauf der Beschwerden und Befunde bei nur geringfügiger bis keiner Besserung. Erst die beidseitige Versorgung mit einem Cochleaimplantaten (CI) stellte eine befriedigende Lösung dar. Das Fallbeispiel zeigt diagnostische und therapeutische Möglichkeiten und Grenzen einer immunbedingten Erkrankung. Sie verlangt eine enge interdisziplinäre Zusammenarbeit. Bei beidseitiger Ertaubung ist die frühzeitige CI-Versorgung eine geeignete Form der Rehabilitatio