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In "DIN 18008 - Teil 1 und Teil 2 - What changes with respect to TRLV?" [1] the significant changes about safety levels for design of linearly supported safety glass and insulating glazing with constant loads have been considered. In the present publication systematic investigations are continued regarding failure scenarios, extraordinary load combinations and the effects of imposed loads for buildings. Special load combinations are exemplary presented. The safety levels of TRLV and DIN 18008 are compared. © Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. Source

Kasper R.,RWTH Aachen | Pieplow K.,Hochschule fur Technik und Wirtschaft Berlin
Stahlbau | Year: 2011

The implementation of the first two parts of the design and construction regulations for glass in structural engineering by the responsible building authorities is imminent. For the user this implies that for glass components soon much more time consuming structural design calculations according to the partial safety concept have to be carried out. Especially for multi-layered insulating float glass this leads to an increasing effort, because the loads are assigned to different duration which are taken into account on the resistance side in the form of a load duration dependent tensile strength. This structural design calculation approach satisfies the material properties of glass but also increases the computational effort. By means of examples the major changes in the new design and construction regulations are illustrated. © Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. Source

Ozturk I.K.,Istanbul University | Basar G.,Istanbul University | Er A.,Istanbul University | Guzelcimen F.,Istanbul University | And 2 more authors.
Journal of Physics B: Atomic, Molecular and Optical Physics | Year: 2015

Laser-induced fluorescence spectroscopy was applied in order to find new energy levels of the niobium atom. A continuous wave tuneable titanium-sapphire laser in the wavelength range from 750 to 865 nm and a hollow-cathode lamp were used. We discovered four energy levels of even parity, three lying levels below 19 000 cm-1 and one at much higher energy. Additionally hyperfine structure data of six levels of odd parity were determined. © 2015 IOP Publishing Ltd. Source

Er A.,Istanbul University | Guzelcimen F.,Istanbul University | Basar G.,Istanbul University | Ozturk I.K.,Istanbul University | And 3 more authors.
Astrophysical Journal, Supplement Series | Year: 2015

In this study, a Fourier Transform spectrum of Niobium (Nb) is investigated in the near-infrared spectral range from 6000 to 12,000 cm-1 (830-1660 nm). The Nb spectrum is produced using a hollow cathode discharge lamp in an argon atmosphere. Both Nb and Ar spectral lines are visible in the spectrum. A total of 110 spectral lines are assigned to the element Nb. Of these lines, 90 could be classified as transitions between known levels of atomic Nb. From these classified Nb i transitions, 27 have not been listed in literature previously. Additionally, 8 lines are classified for the first time. © 2015. The American Astronomical Society. All rights reserved. Source

Lyagin E.,TU Berlin | Drews A.,Hochschule fur Technik und Wirtschaft Berlin | Kraume M.,TU Berlin
Chemical Engineering and Technology | Year: 2015

The existing screening and characterization systems for biocatalysts operate in batch mode, which could make catalyst selection and process development inaccurate when continuous operation mode is required in industry. A significant improvement of an innovative screening system based on miniaturized multiple membrane reactors formerly presented by the author is outlined, which enables continuous feeding of substrates and continuous removal of products. Although the presented screening system was originally designed for homogeneous enzymatic reactions, it can be used without further modifications for continuous catalysis with polymer-bound chemical catalysts or for quasi-homogeneous systems like reverse micelles. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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