Search results for: Andreas Ritter

Items from 1 to 7 out of 7 results

article

Restoration of primary cilia in obese adipose-derived mesenchymal stem cells by inhibiting Aurora A or extracellular signal-regulated kinase

Andreas Ritter, Nina-Naomi Kreis, Susanne Roth, Alexandra Friemel, more

Stem Cell Research & Therapy > 2019 > 10 > 1 > 1-16

Background Obesity impairs a variety of cell types including adipose-derived mesenchymal stem cells (ASCs). ASCs are indispensable for tissue homeostasis/repair, immunomodulation, and cell renewal. It has been demonstrated that obese ASCs are defective in differentiation, motility, immunomodulation, and replication. We have recently reported that some of these defects are linked to impaired primary...

article

Single-needle electroporation and interstitial electrochemotherapy: in vivo safety and efficacy evaluation of a new system

Federico Pedersoli, Andreas Ritter, Markus Zimmermann, Maximilian Schulze-Hagen, more

European Radiology > 2019 > 29 > 11 > 6300-6308

Objectives We conducted an in vivo trial to investigate the safety and efficacy of a newly developed system for the application of a combined therapy consisting of irreversible electroporation (IRE) and electrochemotherapy (IRECT) in the liver. The system is conceived as a single-needle multitined applicator with expandable electrodes that allow interstitial injection of fluids, e.g., chemotherapy...

article

Epigenetic alterations of the POMC promoter in tobacco dependence

Marc Muschler, Mathias Rhein, Andreas Ritter, Thomas Hillemacher, more

European Neuropsychopharmacology > 2018 > 28 > 7 > 875-879

Impaired regulation of the hypothalamic-pituitary-adrenal (HPA) axis is substantially involved in several psychiatric disorders. Smoking interferes with HPA axis by activating proopiomelanocortin (POMC) neurons and thus stimulating the expression of POMC. The POMC transcript is processed into several peptide hormones, such as adrenocorticotropic hormone (ACTH) and alpha-melanocyte-stimulating hormone...

article

Novel Method for Predicting Limit Performance of Bus-Transfer Switching by Disconnectors

Andreas Ritter, Ueli Straumann, Christian Michael Franck

IEEE Transactions on Power Delivery > 2017 > 32 > 5 > 2210 - 2217

In order to accurately predict the performance of disconnectors conducting bus-transfer switching in gas insulated substations, the influencing factors of the switching process itself as well as the reignition characteristics need to be analyzed. For this, an LC-oscillating ac current source in combination with a nonstandardized full bus-transfer loop was built. Based on experiment data from a total...

article

Engine <sc>On/Off</sc> Control for the Energy Management of a Serial Hybrid Electric Bus via Convex Optimization

Philipp Elbert, Tobias Nuesch, Andreas Ritter, Nikolce Murgovski, more

IEEE Transactions on Vehicular Technology > 2014 > 63 > 8 > 3549 - 3559

Convex optimization has recently been suggested for solving the optimal energy management problem of hybrid electric vehicles. Compared with dynamic programming, this approach can significantly reduce the computational time, but the price to pay is additional model approximations and heuristics for discrete decision variables such as engine <sc>on/off</sc> control. In this paper, the globally...

article

Investigations on radiation hardness of DEPFET sensors for the Belle II detector

Andreas Ritter, Ladislav Andricek, Tobias Kleinohl, Christian Koffmane, more

Nuclear Inst. and Methods in Physics Research, A > 2013 > 730 > Complete > 79-83

In the upgrade of the Belle detector at KEK (Tsukuba, Japan) the two innermost layers of the vertex detector will be realized by a pixel detector (PXD) consisting of DEPFET (DEpleted P-channel Field Effect Transistor) matrices. As the position of the detector will be very close to the beam pipe, it will suffer from intense radiation levels. The main radiation background is the luminosity related 4-fermion...

article

Functionalized chloroenamines in aminocyclopropane synthesis - XVII. 3,5-cyclopiperidine-4-carboxamides with an unsubstituted 4-amino moiety - a synthetic and a conformational study

Elmar Vilsmaier, Gunther Milch, Karin Fröhlich, Uwe Bergsträßer, more

Tetrahedron > 1995 > 51 > 12 > 3507-3520

4-Amino-3,5-cyclopiperidine compounds 4a, 4b and 11 with unsubstituted amino moieties in 1- and/or 4-position were prepared via tribenzyl derivative 10 by selective removal of the protecting groups. The preference of a cyclopiperidine boat conformation of diamines4a , 4b and 11 in solution was indicated by ¹ H NMR spectroscopy. X-Ray structural analysis of carboxamide 4a established the...

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Search results for: Andreas Ritter

Restoration of primary cilia in obese adipose-derived mesenchymal stem cells by inhibiting Aurora A or extracellular signal-regulated kinase

Single-needle electroporation and interstitial electrochemotherapy: in vivo safety and efficacy evaluation of a new system

Epigenetic alterations of the POMC promoter in tobacco dependence

Novel Method for Predicting Limit Performance of Bus-Transfer Switching by Disconnectors

Engine <sc>On/Off</sc> Control for the Energy Management of a Serial Hybrid Electric Bus via Convex Optimization

Investigations on radiation hardness of DEPFET sensors for the Belle II detector

Functionalized chloroenamines in aminocyclopropane synthesis - XVII. 3,5-cyclopiperidine-4-carboxamides with an unsubstituted 4-amino moiety - a synthetic and a conformational study

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