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Copyright of Der Freie Zahnarzt is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In steel structures, bolted connections are preloaded either for load‐bearing capacity reasons or for serviceability reasons. Single and multi‐section connections of wind turbines, offshore plants, bridges etc. are typical application examples. Gap formation due to production‐ and assembly‐related imperfections poses a risk for a controlled application of the required preload level, which is vital for slip‐resistant and fatigue loaded connections. Furthermore, it might significantly affect the desired behaviour of the connection or even lead to premature failure. For this reason, EN 1090‐2 provides regulations on the allowable gap formation and even prescribes measures to avoid negative outcomes. One of the possibilities for a gap compensation are gap filling materials, also known as liquid shim or load transfer materials, such as MM1018 of DIAMANT Metallplastic GmbH, Germany, a two‐component composite system filled with special metallic materials. Currently, systematic investigations into the application of duroplastic gap filling materials in preloaded bolted connections are carried out in the frame of the German cooperation project "Bri‐San‐T ‐ DuroFüllSta". Herein, the slip factor is experimentally determined according to EN 1090 2, Annex G under variation of application type, gap thickness, curing time, temperature and surface condition. Furthermore, relaxation tests are carried out to determine possible preload losses over the intended service life of the structure. The presented contribution intends to provide an insight into the main properties of duroplastic gap filling materials with regard to their application in preloaded bolted connections under various conditions. [ABSTRACT FROM AUTHOR]

Copyright of Melliand International is the property of dfv Mediengruppe and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

For many years now, Pabst's micro-press has been used in German forensic science laboratories as a valuable addition to methods of comparative analysis of plastic trace evidence. However, it is as yet hardly known in laboratories outside of Germany. The principal reproducibility is demonstrated by a homogeneity check of a raw backing material of defined origin. The illustrated results of a proficiency test emphasise the applicability of the Pabst method for forensic comparisons. The discrimination power of the Pabst method was tested by taking 90 black PVC-backings provided by the FBI Laboratory, i.e. those that could not be discriminated by standard methods. In this way further discriminations could be achieved. In the following, the Pabst method is therefore introduced as a straightforward, inexpensive and useful tool. [ABSTRACT FROM AUTHOR]

Within the last decade, conceptual models for deep geothermal applications in carbonate horizons in Bavaria (Germany) have been developed and implemented. Most of those horizons are located at depth of 4000 m to 6000 m. Recent studies noted that rock formations for geothermal applications are karstified carbonates from the Late Jurassic reef facies. In North Rhine-Westphalia carbonates from late Devonian and early Carboniferous are exposed but, so far, quantification of the in-situ hydraulic conductivity of these limestones is still lacking. Consequently, local geological surface measurements and laboratory tests have to be conducted in order to estimate the deep geothermal potential in western Germany. Three, representative open-pit mines were chosen for field surveys and to collect sample material for laboratory investigations. Those quarries are located in the east of the Rhenohercynian Massif in western Germany and are part of the Remscheid-Altena Anticline. During field surveys, discontinuities at various spacial scales were recorded which were cross-cutting an installed tape line at the outcrop wall. The so-called scanline survey method was used, that is, by counting all discontinuities along a fixed horizontal line at several locations in each quarry. In addition, the discontinuities were characterized by trace length, true spacing, roughness, aperture widths, and filling materials. Almost 800 discontinuities were recorded by this method. Joint orientation analysis indicated two dominant strike orientations in NNW-SSE and NE-SW. Discontinuity trace lengths and true discontinuity spacing results were used to describe potential settings for deep geothermal applications in the Rhine-Ruhr area. At the laboratory scale, basic physical properties, such as porosities, dynamic elastic moduli, and permeability, were determined on representative samples to compare these properties with the ones of recent studies on the Bavarian carbonates. Our results indicate that higher permeability can be expected for karstified formations related to the reef facies. Furthermore, the results of our structural joint-analysis provide a good basis for 3D subsurface modeling and numerical modeling of subsurface fluid flow. [ABSTRACT FROM AUTHOR]

International consultancy Frost & Sullivan (F&S) has presented a ‘2009 Global Growth Strategy Leadership Award,’ to Germany''s Nabaltec AG for its development of a corporate growth-oriented strategy for its high-performance fillers business. This has resulted in steady double-digit revenue growth since 2005, largely driven by the strong performance of the functional fillers division over this period. The award is presented to a company that has demonstrated an exceptional long-term growth strategy within its industry. [Copyright &y& Elsevier]