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197 results on '"Graf, Michael"'

8. SARS-CoV-2-derived peptides define heterologous and COVID-19-induced T cell recognition

Author

Nelde, Annika, Bilich, Tatjana, Heitmann, Jonas S., Maringer, Yacine, Salih, Helmut R., Roerden, Malte, Lübke, Maren, Bauer, Jens, Rieth, Jonas, Wacker, Marcel, Peter, Andreas, Hörber, Sebastian, Traenkle, Bjoern, Kaiser, Philipp D., Rothbauer, Ulrich, Becker, Matthias, Junker, Daniel, Krause, Gérard, Strengert, Monika, Schneiderhan-Marra, Nicole, Templin, Markus F., Joos, Thomas O., Kowalewski, Daniel J., Stos-Zweifel, Vlatka, Fehr, Michael, Rabsteyn, Armin, Mirakaj, Valbona, Karbach, Julia, Jäger, Elke, Graf, Michael, Gruber, Lena-Christin, Rachfalski, David, Preuß, Beate, Hagelstein, Ilona, Märklin, Melanie, Bakchoul, Tamam, Gouttefangeas, Cécile, Kohlbacher, Oliver, Klein, Reinhild, Stevanović, Stefan, Rammensee, Hans-Georg, and Walz, Juliane S.

Published
2021
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12. Quality of Life After Total Mesorectal Excision and Rectal Replacement: Comparing Side-to-End, Colon J-Pouch and Straight Colorectal Reconstruction in a Randomized, Phase III Trial (SAKK 40/04)

Author

Ribi, Karin, Marti, Walter R., Bernhard, Jürg, Grieder, Felix, Graf, Michael, Gloor, Beat, Curti, Gaudenz, Zuber, Markus, Demartines, Nicolas, Andrieu, Christiane, Bigler, Martin, Hayoz, Stefanie, Wehrli, Heinz, Kettelhack, Christoph, Lerf, Bruno, Fasolini, Fabrizio, Hamel, Christian, and For the Swiss group for clinical cancer research, section surgery

Published
2019
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20. Clinical Outcome After Rectal Replacement With Side-to-End, Colon-J-Pouch, or Straight Colorectal Anastomosis Following Total Mesorectal Excision: A Swiss Prospective, Randomized, Multicenter Trial (SAKK 40/04)

Author

Marti, Walter R., Curti, Gaudenz, Wehrli, Heinz, Grieder, Felix, Graf, Michael, Gloor, Beat, Zuber, Markus, Demartines, Nicolas, Fasolini, Fabrizio, Lerf, Bruno, Kettelhack, Christoph, Andrieu, Christiane, Bigler, Martin, Hayoz, Stefanie, Ribi, Karin, and Hamel, Christian

Published
2019
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23. Single-layer Mo[S.sub.2] nanopores as nanopower generators

Author

Feng, Jiandong, Graf, Michael, Liu, Ke, Ovchinnikov, Dmitry, Dumcenco, Dumitru, Heiranian, Mohammad, Nandigana, Vishal, Aluru, Narayana R., Kis, Andras, and Radenovic, Aleksandra

Subjects
Osmotic pressure -- Usage, Nanoparticles -- Properties -- Usage, Molybdenum compounds -- Properties -- Usage, Electric power production -- Methods, Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Making use of the osmotic pressure difference between fresh water and seawater is an attractive, renewable and clean way to generate power and is known as 'blue energy' (1-3). Another electrokinetic phenomenon, called the streaming potential, occurs when an electrolyte is driven through narrow pores either by a pressure gradient (4) or by an osmotic potential resulting from a salt concentration gradient (5). For this task, membranes made of two-dimensional materials are expected to be the most efficient, because water transport through a membrane scales inversely with membrane thickness (5-7). Here we demonstrate the use of single-layer molybdenum disulfide (Mo[S.sub.2]) nanopores as osmotic nanopower generators. We observe a large, osmotically induced current produced from a salt gradient with an estimated power density of up to [10.sup.6] watts per square metre--a current that can be attributed mainly to the atomically thin membrane of Mo[S.sub.2]. Low power requirements for nanoelectronic and optoelectric devices can be provided by a neighbouring nanogenerator that harvests energy from the local environment (8-11)--for example, a piezoelectric zinc oxide nanowire array (8) or single-layer Mo[S.sub.2] (ref. 12). We use our Mo[S.sub.2] nanopore generator to power a Mo[S.sub.2] transistor, thus demonstrating a self-powered nanosystem., Mo[S.sub.2] nanopores have already demonstrated better water-transport behaviour than graphene (13,14) owing to the enriched hydrophilic surface sites (provided by the molybdenum) that are produced following either irradiation with transmission [...]

Published
2016

27. The Myxobacterial Antibiotic Myxovalargin: Biosynthesis, Structural Revision, Total Synthesis, and Molecular Characterization of Ribosomal Inhibition.

Author

Koller, Timm O., Scheid, Ullrich, Kösel, Teresa, Herrmann, Jennifer, Krug, Daniel, Boshoff, Helena I. M., Beckert, Bertrand, Evans, Joanna C., Schlemmer, Jan, Sloan, Becky, Weiner, Danielle M., Via, Laura E., Moosa, Atica, Ioerger, Thomas R., Graf, Michael, Zinshteyn, Boris, Abdelshahid, Maha, Nguyen, Fabian, Arenz, Stefan, and Gille, Franziska

Published
2023
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39. Single Mandibular Implant Study: Recruitment Considerations.

Author

Passia, Nicole, Abou-Ayash, Samir, Bender, Daniela, Fritzer, Elfriede, Graf, Michael, Kappel, Stefanie, Konstantinidis, Ioannis, Mundt, Torsten, Maltzahn, Nadine Frfr. v., Wolfart, Stefan, Kern, Matthias, and Maltzahn, Nadine Frfr

Subjects
DENTAL implants, MANDIBLE, IMMEDIATE loading (Dentistry), EDENTULOUS mouth, DATA analysis, PATIENT selection, PATIENT satisfaction, CLINICAL trials, COMPARATIVE studies, JAW diseases, RESEARCH methodology, MEDICAL cooperation, PANORAMIC radiography, RESEARCH, EVALUATION research
Abstract

Purpose: The aim of this multicenter single mandibular implant study was to compare the clinical outcome of an immediately loaded implant placed in the midline of an edentulous mandible with the clinical outcome when closed healing and delayed loading is chosen. Here, the patient recruitment period and the main reasons for exclusion were analyzed.Materials and Methods: Patient recruitment was performed at nine German universities. Rather conservative inclusion and exclusion criteria, including denture satisfaction, denture status, a psychologic symptom checklist, and a defined bone height in the posterior mandible, had to be fulfilled. It was initially calculated that 230 persons would have to be screened within 13 months to include 180 persons in the trial.Results: Within 13 months (December 2012 to December 2013), 201 patients were screened for possible inclusion in the trial and 148 met the inclusion criteria. Finally, after the recruitment period was extended by 2.5 months, 224 patients were screened and 169 were included. Of those screened, 55 (24.6%) did not meet the inclusion criteria and were excluded. Another 4 patients (1.8%) were excluded based on their psychologic symptom checklist score, while 5 others (2.8%) showed signs of noncompliance. A further 8 patients (4.4%) decided not to participate and withdrew their informed consent, and another 3 (1.3%) were no longer available after screening. Another 2 patients were excluded due to medical contraindications and 1 due to an insufficient mandibular denture. In 34 cases (15.2%), the residual bone height did not comply with McGarry type II or III.Conclusion: Within the limitations of this patient recruitment period, it can be concluded that residual bone height is the most important factor when considering elderly edentulous patients for implant therapy. The psychologic symptom checklist score was less important. [ABSTRACT FROM AUTHOR]

Published
2017
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40. Analysis and optimization of the back-gate effect on lateral high-voltage SOI devices

Author

Schwantes, Stefan, Florian, Tobias, Stephan, Thilo, Graf, Michael, and Dudek, Volker

Subjects
Silicon-on-isolator -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

The impact of the back-gate bias on lateral DMOS (LDMOS) transistors on silicon-on-insulator (SOI) substrates is discussed. An analytical model that takes the back-gate bias and the device parameters into account is presented and verified with a 0.8-mu m, 80-V SOI smart power technology.

Published
2005

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