TY - JOUR A1 - Giresini, Linda A1 - Sassu, Mauro A1 - Butenweg, Christoph A1 - Alecci, Valerio A1 - De Stefano, Mario T1 - Vault macro-element with equivalent trusses in global seismic analyses JF - Earthquakes and Structures N2 - This paper proposes a quick and simplified method to describe masonry vaults in global seismic analyses of buildings. An equivalent macro-element constituted by a set of six trusses, two for each transverse, longitudinal and diagonal direction, is introduced. The equivalent trusses, whose stiffness is calculated by fully modeled vaults of different geometry, mechanical properties and boundary conditions, simulate the vault in both global analysis and local analysis, such as kinematic or rocking approaches. A parametric study was carried out to investigate the influence of geometrical characteristics and mechanical features on the equivalent stiffness values. The method was numerically validated by performing modal and transient analysis on a three naves-church in the elastic range. Vibration modes and displacement time-histories were compared showing satisfying agreement between the complete and the simplified models. This procedure is particularly useful in engineering practice because it allows to assess, in a simplified way, the effectiveness of strengthening interventions for reducing horizontal relative displacements between vault supports. KW - vault KW - macro-element KW - equivalent stiffness KW - truss KW - churches Y1 - 2017 U6 - https://doi.org/10.12989/eas.2017.12.4.409 SN - 2092-7614 (Print) SN - 2092-7622 (Online) VL - 12 IS - 4 SP - 409 EP - 423 PB - Techno-Press CY - Taejŏn ER - TY - JOUR A1 - Giese, S. A1 - Kirsch, Ansgar A1 - Ziegler, M. T1 - Numerische Untersuchung von Schervorgängen mit der Diskrete-Partikel-Methode JF - Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik Y1 - 2006 SN - 0005-6650 N1 - Gedruckt in der Bibliothek Bayernallee vorhanden: 13 Z 049-2006 VL - Bd. 81 IS - H. 5 SP - 232 EP - 239 ER - TY - JOUR A1 - Gielen, Hans-Günther A1 - Wolf, Günter A1 - Berndt, Heinz A1 - Zahn, Helmut T1 - Synthese der Fragmente A1–8, A9–15 und A16–21 der Schafinsulin-A-Kette unter Verwendung des S-tert-Butylmercaptorestes als Thiolschutzgruppe JF - Hoppe-Seyler's Zeitschrift für physiologische Chemie Y1 - 1979 U6 - https://doi.org/10.1515/bchm2.1979.360.2.1535 SN - 1437-4315 SN - 0018-4888 VL - 360 IS - 2 SP - 1535 EP - 1548 ER - TY - JOUR A1 - Ghosch, S. A1 - Baier, M. A1 - Schütz, J. A1 - Schneider, Felix A1 - Scherer, Ulrich W. T1 - Analysis of electronic autoradiographs by mathematical post-processing JF - Radiation Effects and Defects in Solids: Incorporating plasma science and plasma technology N2 - Autoradiography is a well-established method of nuclear imaging. When different radionuclides are present simultaneously, additional processing is needed to distinguish distributions of radionuclides. In this work, a method is presented where aluminium absorbers of different thickness are used to produce images with different cut-off energies. By subtracting images pixel-by-pixel one can generate images representing certain ranges of β-particle energies. The method is applied to the measurement of irradiated reactor graphite samples containing several radionuclides to determine the spatial distribution of these radionuclides within pre-defined energy windows. The process was repeated under fixed parameters after thermal treatment of the samples. The greyscale images of the distribution after treatment were subtracted from the corresponding pre-treatment images. Significant changes in the intensity and distribution of radionuclides could be observed in some samples. Due to the thermal treatment parameters the most significant differences were observed in the ³H and ¹⁴C inventory and distribution. Y1 - 2016 U6 - https://doi.org/10.1080/10420150.2016.1155587 SN - 1029-4953 VL - 171 IS - 1-2 SP - 161 EP - 172 PB - Taylor & Francis CY - London ER - TY - JOUR A1 - German, Laura A1 - Mikucki, Jill A. A1 - Welch, Susan A. A1 - Welch, Kathleen A. A1 - Lutton, Anthony A1 - Dachwald, Bernd A1 - Kowalski, Julia A1 - Heinen, Dirk A1 - Feldmann, Marco A1 - Francke, Gero A1 - Espe, Clemens A1 - Lyons, W. Berry T1 - Validation of sampling antarctic subglacial hypersaline waters with an electrothermal ice melting probe (IceMole) for environmental analytical geochemistry JF - International Journal of Environmental Analytical Chemistry N2 - Geochemical characterisation of hypersaline waters is difficult as high concentrations of salts hinder the analysis of constituents at low concentrations, such as trace metals, and the collection of samples for trace metal analysis in natural waters can be easily contaminated. This is particularly the case if samples are collected by non-conventional techniques such as those required for aquatic subglacial environments. In this paper we present the first analysis of a subglacial brine from Taylor Valley, (~ 78°S), Antarctica for the trace metals: Ba, Co, Mo, Rb, Sr, V, and U. Samples were collected englacially using an electrothermal melting probe called the IceMole. This probe uses differential heating of a copper head as well as the probe’s sidewalls and an ice screw at the melting head to move through glacier ice. Detailed blanks, meltwater, and subglacial brine samples were collected to evaluate the impact of the IceMole and the borehole pump, the melting and collection process, filtration, and storage on the geochemistry of the samples collected by this device. Comparisons between melt water profiles through the glacier ice and blank analysis, with published studies on ice geochemistry, suggest the potential for minor contributions of some species Rb, As, Co, Mn, Ni, NH4+, and NO2−+NO3− from the IceMole. The ability to conduct detailed chemical analyses of subglacial fluids collected with melting probes is critical for the future exploration of the hundreds of deep subglacial lakes in Antarctica. Y1 - 2021 U6 - https://doi.org/10.1080/03067319.2019.1704750 SN - 0306-7319 VL - 101 IS - 15 SP - 2654 EP - 2667 PB - Taylor & Francis CY - London ER - TY - JOUR A1 - Gerling, Ulrich A1 - Predel, Bruno T1 - Beitrag zur Frage nach der Assoziatbildung in flüssigen Antimon-Zink-Legierungen JF - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 77, H. 1 Y1 - 1986 SN - 0044-3093 ; 0179-4841 SP - 17 EP - 25 ER - TY - JOUR A1 - Gerling, Ulrich A1 - Predel, Bruno T1 - Assoziation in flüssigen Gold-Zink-Legierungen und die Zuverlässigkeit der Modellparameter JF - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 75, H. 8 Y1 - 1984 SN - 0044-3093 ; 0179-4841 SP - 592 EP - 598 ER - TY - JOUR A1 - Gerling, Ulrich A1 - Predel, Bruno T1 - Berechnung der Parameter des Assoziatmodells für binäre Legierungen nach der Methode der kleinsten Summe der Fehlerquadrate JF - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 74, H. 12 Y1 - 1983 SN - 0044-3093 ; 0179-4841 SP - 810 EP - 818 ER - TY - JOUR A1 - Gerling, Ulrich A1 - Predel, Bruno T1 - Zur Kenntnis thermodynamischer Eigenschaften flüssiger Kupfer-Zink-Legierungen JF - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 71, H. 3 Y1 - 1980 SN - 0044-3093 ; 0179-4841 SP - 158 EP - 164 ER - TY - JOUR A1 - Gerling, Ulrich A1 - Predel, Bruno T1 - Zur Kenntnis thermodynamischer Eigenschaften flüssiger Gold-Zink-Legierungen JF - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 71, H. 2 Y1 - 1980 SN - 0044-3093 ; 0179-4841 SP - 79 EP - 84 ER -