TY - JOUR A1 - Anik, Sabri A1 - Tuelbentci, K. T1 - Lichtbogenschweißen : Untersuchung der Schweißschlacke und der Wirkungen auf das Entfernen der Schlacke beim Lichtbogenschweißen ; Teil 1 JF - Technische Rundschau : TR ; das Schweizer Industrie-Magazin Y1 - 1973 SN - 0040-148X VL - 65 IS - 48 SP - 13 EP - 15 PB - Medtrix Group CY - Basel ER - TY - BOOK A1 - Gebhardt, Andreas A1 - Kessler, Julia A1 - Thurn, Laura T1 - 3D printing : understanding additive manufacturing Y1 - 2019 SN - 978-1-56990-702-3 SN - 978-1-56990-703-0 ebook N1 - gedruckt in der Bereichsbibliothek Eupener Str. vorhanden PB - Hanser CY - München ET - 2. Auflage ER - TY - THES A1 - Bragard, Michael T1 - The integrated emitter turn-off thyristor : an innovative MOS-gated high-power device. - (Aachener Beiträge des ISEA ; 62) N2 - This thesis introduces the Integrated Emitter Turn-Off (IETO) Thyristor as a new high-power device. Known state-of-the-art research activities like the Dual GCT, the ETO thyristor and the ICT were presented and critically reviewed. A comparison with commercialized solutions identifies the pros and cons of each type of device family. Based on this analysis, the IETO structure is proposed, covering most benefits of each device class. In particular the combination of a MOS-assisted turn-off with a thyristor-based device allows a voltage-controlled MOS switching and the low on-state voltage of the thyristors. The following synthesis of an IETO device stands on a three-dimensional field of optimization spanned by electric, mechanical and thermal aspects. From an electric point of view, the lowest possible parasitic inductance and resistance within the commutation path are optimization criteria. The mechanical construction has to withstand the required contact pressure of multiple kilo Newtons. Finally, thermal borders limit the maximum average current of the device. FEM simulations covering these three aspects are performed for several design proposals. An IETO prototype is constructed and measurements on various test benches attest thermal, mechanical and electric performance. A local decoupling of the external driver stage and the presspack housing is presented by a cable connection. This separation enables a thermal and mechanical independence, which is advantageous in terms of vibrations and thermal cycles including increased reliability. The electric pulse performance of the prototype device is a factor of 3.1 above today''s solutions. In single-pulse measurements, a current up to 1600 A was successfully turned off at 115°C with an active silicon area of 823 mm². One reason for this increased turn-off capability is the extremely low-inductive construction. Additional functionality of the IETO thyristor like over-current self-protection and defined short-circuit failure state are successfully verified. Y1 - 2012 SN - 978-3-8440-1152-4 N1 - Zugl.: Aachen, Techn. Hochsch., Diss., 2012 PB - Shaker CY - Aachen ER - TY - JOUR A1 - von Knobelsdorf-Brenkenhoff, Florian A1 - Frauenrath, Tobias A1 - Prothmann, Marcel A1 - Dieringer, Matthias A. A1 - Hezel, Fabian A1 - Renz, Wolfgang A1 - Kretschel, Kerstin A1 - Niendorf, Thoralf A1 - Schulz-Menger, Jeanette T1 - Cardiac chamber quantification using magnetic resonance imaging at 7 Tesla—a pilot study N2 - Objectives Interest in cardiovascular magnetic resonance (CMR) at 7 T is motivated by the expected increase in spatial and temporal resolution, but the method is technically challenging. We examined the feasibility of cardiac chamber quantification at 7 T. Methods A stack of short axes covering the left ventricle was obtained in nine healthy male volunteers. At 1.5 T, steady-state free precession (SSFP) and fast gradient echo (FGRE) cine imaging with 7 mm slice thickness (STH) were used. At 7 T, FGRE with 7 mm and 4 mm STH were applied. End-diastolic volume, end-systolic volume, ejection fraction and mass were calculated. Results All 7 T examinations provided excellent blood/myocardium contrast for all slice directions. No significant difference was found regarding ejection fraction and cardiac volumes between SSFP at 1.5 T and FGRE at 7 T, while volumes obtained from FGRE at 1.5 T were underestimated. Cardiac mass derived from FGRE at 1.5 and 7 T was larger than obtained from SSFP at 1.5 T. Agreement of volumes and mass between SSFP at 1.5 T and FGRE improved for FGRE at 7 T when combined with an STH reduction to 4 mm. Conclusions This pilot study demonstrates that cardiac chamber quantification at 7 T using FGRE is feasible and agrees closely with SSFP at 1.5 T. Y1 - 2010 U6 - https://doi.org/10.1007/s00330-010-1888-2 SN - 0938-7994 VL - 20 SP - 2844 EP - 2852 PB - Springer CY - Berlin, Heidelberg ER - TY - JOUR A1 - Falkenberg, Fabian A1 - Bott, Michael A1 - Bongaerts, Johannes A1 - Siegert, Petra T1 - Phylogenetic survey of the subtilase family and a data-mining-based search for new subtilisins from Bacillaceae JF - Frontiers in Microbiology N2 - The subtilase family (S8), a member of the clan SB of serine proteases are ubiquitous in all kingdoms of life and fulfil different physiological functions. Subtilases are divided in several groups and especially subtilisins are of interest as they are used in various industrial sectors. Therefore, we searched for new subtilisin sequences of the family Bacillaceae using a data mining approach. The obtained 1,400 sequences were phylogenetically classified in the context of the subtilase family. This required an updated comprehensive overview of the different groups within this family. To fill this gap, we conducted a phylogenetic survey of the S8 family with characterised holotypes derived from the MEROPS database. The analysis revealed the presence of eight previously uncharacterised groups and 13 subgroups within the S8 family. The sequences that emerged from the data mining with the set filter parameters were mainly assigned to the subtilisin subgroups of true subtilisins, high-alkaline subtilisins, and phylogenetically intermediate subtilisins and represent an excellent source for new subtilisin candidates. Y1 - 2022 U6 - https://doi.org/10.3389/fmicb.2022.1017978 SN - 1664-302X VL - 2022 IS - 13 PB - Frontiers CY - Lausanne ER - TY - CHAP A1 - Engelmann, Ulrich M. A1 - Baumann, Martin ED - Herbig, Nicola ED - Poppelreuter, Stefan T1 - Moderationsexpertise für QMBs – die Methoden T2 - Qualitätsmanagement im Gesundheitswesen N2 - Damit Sie als Moderator effektiv und professionell moderieren können, sollten Sie die entsprechenden Methoden kennen. Mit den richtigen Methoden können Sie Diskussionen leiten, Konflikte lösen, die Teilnehmer motivieren und dafür sorgen, dass die Ziele der Veranstaltung erreicht werden. Außerdem helfen sie Ihnen, eine positive Atmosphäre zu schaffen und das Interesse der Teilnehmer zu halten. In diesem zweiten Beitrag der mehrteiligen Serie lernen Sie die grundsätzlichen Methoden kennen, um erfolgreiche Teamsitzungen, Arbeitsgruppentreffen, Kick-offs und Meetings durchzuführen. Y1 - 2023 SN - 978-3-8249-0714-4 SP - Kapitel 10815 PB - TÜV-Verlag CY - Köln ET - 60. Update ER - TY - JOUR A1 - Danho, Waleed A1 - Naithani, Vinod K. A1 - Sasaki, André N. A1 - Föhles, Joseph A1 - Berndt, Heinz A1 - [u.a.], T1 - Human proinsulin, VII : synthesis of two protected peptides corresponding to the sequences 1—45 and 46—86 of the prohormone JF - Hoppe-Seyler's Zeitschrift für physiologische Chemie Y1 - 1980 U6 - https://doi.org/10.1515/bchm2.1980.361.1.857 SN - 1437-4315 SN - 0018-4888 VL - 361 IS - 1 SP - 857 EP - 863 ER - TY - JOUR A1 - Gaigall, Daniel T1 - Rothman–Woodroofe symmetry test statistic revisited JF - Computational Statistics & Data Analysis N2 - The Rothman–Woodroofe symmetry test statistic is revisited on the basis of independent but not necessarily identically distributed random variables. The distribution-freeness if the underlying distributions are all symmetric and continuous is obtained. The results are applied for testing symmetry in a meta-analysis random effects model. The consistency of the procedure is discussed in this situation as well. A comparison with an alternative proposal from the literature is conducted via simulations. Real data are analyzed to demonstrate how the new approach works in practice. Y1 - 2020 U6 - https://doi.org/10.1016/j.csda.2019.106837 SN - 0167-9473 VL - 2020 IS - 142 SP - Artikel 106837 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Berndt, Heinz A1 - Turck, Christoph W. ED - Voelter, Wolfgang T1 - Syntheses of defined peptide derivatives by aminolysis of 3-[Nα-benzyloxycarbonyl peptidyloxy] -2-hydroxy-N-methyl-benzamides at elevated temperatures II. Synthesis of the peptide derivatives Z-Ala-X-Gly-N(Et)2, X=Phe, Leu, Val, Ser (But), Glu (OBut) T2 - Chemistry of peptides and proteins : proceedings of the Fourth USSR-FRG Symposium, Tübingen, Federal Republic of Germany, June 8 - 12, 1982 / ed. Wolfgang Voelter ... - Vol. 2 Y1 - 1984 SN - 3-11009-580-7 SP - 97 EP - 103 PB - de Gruyter CY - Berlin [u.a.] ER - TY - RPRT A1 - Bernecker, Andreas A1 - Boyer, Pierre A1 - Gathmann, Christina T1 - The Role of Electoral Incentives for Policy Innovation: Evidence from the US Welfare Reform T2 - CESifo Working Paper Y1 - 2018 SN - ISSN 2364‐1428 (electronic version) IS - No. 6964 ER -