TY - JOUR A1 - Leinhos, Marcel A1 - Schusser, Sebastian A1 - Bäcker, Matthias A1 - Poghossian, Arshak A1 - Schöning, Michael Josef T1 - Micromachined multi-parameter sensor chip for the control of polymer-degradation medium JF - Physica Status Solidi (A) : special issue on engineering and functional interfaces N2 - It is well known that the degradation environment can strongly influence the biodegradability and kinetics of biodegradation processes of polymers. Therefore, besides the monitoring of the degradation process, it is also necessary to control the medium in which the degradation takes place. In this work, a micromachined multi-parameter sensor chip for the control of the polymer-degradation medium has been developed. The chip combines a capacitive field-effect pH sensor, a four-electrode electrolyte-conductivity sensor and a thin-film Pt-temperature sensor. The results of characterization of individual sensors are presented. In addition, the multi-parameter sensor chip together with an impedimetric polymer-degradation sensor was simultaneously characterized in degradation solutions with different pH and electrolyte conductivity. The obtained results demonstrate the feasibility of the multi-parameter sensor chip for the control of the polymer-degradation medium. Y1 - 2014 U6 - https://doi.org/10.1002/pssa.201330364 SN - 1521-396X (E-Journal); 1862-6319 (E-Journal); 0031-8965 (Print); 1862-6300 (Print) VL - 211 IS - 6 SP - 1346 EP - 1351 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Artmann, Gerhard A1 - Sung, K.-L. Paul A1 - Horn, Thomas A1 - Whittemore, Darren [u.a.] T1 - Micropipette aspiration of human erythrocytes induces echinocytes via membrane phospholipid translocation. Artmann, Gerhard Michael; Sung, K.-L. Paul; Horn, Thomas; Whittemore, Darren; Norwich, Gerald; Chien, Shu JF - Biophysical journal. 72 (1997), H. 3 Y1 - 1997 SN - 1542-0086 SP - 1434 EP - 1441 ER - TY - JOUR A1 - Hoyler, Friedrich T1 - Microscopic and semimicroscopic analysis of the reaction 27al- (p,#ga)24mg in the energy range between 20 and 45 mev JF - Physical review / C, nuclear physics. 31 (1985), H. 1 Y1 - 1985 SN - 0556-2813 SP - 17 ER - TY - JOUR A1 - Artmann, Gerhard T1 - Microscopic photometric quantification of stiffness and relaxation time of red blood cells in a flow chamber. Artmann, Gerhard Michael JF - Biorheology. 32 (1995), H. 5 Y1 - 1995 SN - 0006-355x SP - 553 EP - 570 ER - TY - JOUR A1 - Moritz, W. A1 - Yoshinobu, T. A1 - Finger, F. A1 - Krause, S. A1 - Xu, M. A1 - Schöning, Michael Josef T1 - Microscopy of impedance and surface ion concentrations JF - Biomedizinische Technik. 49 (2004), H. 2 Y1 - 2004 SN - 0932-4666 SP - 1000 EP - 1001 ER - TY - JOUR A1 - Poghossian, Arshak A1 - Ingebrandt, S. A1 - Yeung, C.-K. A1 - Offenhäusser, A. A1 - Schöning, Michael Josef T1 - Microsensors based on ion-sensitive field-effect transistors for biomedical applications JF - Biomedizinische Technik. 49 (2004), H. 2 Y1 - 2004 SN - 0932-4666 SP - 1036 EP - 1037 ER - TY - JOUR A1 - Kotliar, Konstantin A1 - Nagel, Edgar A1 - Vilser, Walthard A1 - Seidova, Seid-Fatima A1 - Lanzl, Ines T1 - Microstructural alterations of retinal arterial blood column along the vessel axis in systemic hypertension JF - Investigative Ophthalmology & Visual Science, IOVS N2 - Purpose: Image analysis by the retinal vessel analyzer (RVA) observes retinal vessels in their dynamic state online noninvasively along a chosen vessel segment. It has been found that high-frequency diameter changes in the retinal artery blood column along the vessel increase significantly in anamnestically healthy volunteers with increasing age and in patients with glaucoma during vascular dilation. This study was undertaken to investigate whether longitudinal sections of the retinal artery blood column are altered in systemic hypertension. Methods: Retinal arteries of 15 untreated patients with essential arterial hypertension (age, 50.9 ± 11.9 years) and of 15 age-matched anamnestically healthy volunteers were examined by RVA. After baseline assessment, a monochromatic luminance flicker (530–600 nm; 12.5 Hz; 20 s) was applied to evoke retinal vasodilation. Differences in amplitude and frequency of spatial artery blood column diameter change along segments (longitudinal arterial profiles) of 1 mm in length were measured and analyzed using Fourier transformation. Results: In the control group, average reduced power spectra (ARPS) of longitudinal arterial profiles did not differ when arteries changed from constriction to dilation. In the systemic hypertension group, ARPS during constriction, baseline, and restoration were identical and differed from ARPS during dilation (P < 0.05). Longitudinal arterial profiles in both groups showed significant dissimilitude at baseline and restoration (P < 0.05). Conclusions: The retinal artery blood column demonstrates microstructural alterations in systemic hypertension and is less irregular along the vessel axis during vessel dilation. These microstructural changes may be an indication of alterations in vessel wall rigidity, vascular endothelial function, and smooth muscle cells in this disease, leading to impaired perfusion and regulation. Y1 - 2010 U6 - https://doi.org/10.1167/iovs.09-3649 SN - 0146-0404 VL - 51 IS - 4 SP - 2165 EP - 2172 PB - ARVO CY - Rockville, Md. ER - TY - JOUR A1 - Ramazani, Ali A1 - Li, Yang A1 - Mukherjee, Krishnendu A1 - Prahl, Ulrich A1 - Bleck, Wolfgang A1 - Abdurakhmanov, Aydemir A1 - Schleser, Markus A1 - Reisgen, Uwe T1 - Microstructure evolution simulation in hot rolled DP600 steel during gas metal arc welding JF - Computational materials science Y1 - 2013 SN - 1879-0801 (E-Book); 0927-0256 (Print) VL - Vol. 68 SP - 107 EP - 116 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Förster, Arnold A1 - Dieker, C. A1 - Gerthsen, D. T1 - Microstructure of the AlAs/GaAs and AlAs/InGaAs resonant tunneling diodes and its correlation with the electrical properties / C. Dieker ; D. Gerthsen ; A. Förster ... JF - Microscopy of semiconducting materials 1993 : proceedings of the Royal Microscopical Society Conference held at Oxford University, 5 - 8 April 1993 / ed. by A. G. Cullis ... - (Conference series / Institute of Physics ; 134) Y1 - 1993 SN - 0-7503-0290-9 N1 - Royal Microscopical Society Conference on Microscopy of Semiconducting Materials <8, 1993, Oxford> ; MSM <8, 1993, Oxford> SP - 253 EP - ff. PB - Institute of Physics CY - Bristol [u.a.] ER - TY - JOUR A1 - Kämper, Klaus-Peter A1 - Abraham, M. A1 - Ehrfeld, W. A1 - Hessel, V. T1 - Microsystem technology: Between research and industrial application. Abraham, M.; Ehrfeld, W.; Hessel, V.; Kämper, K.-P.; Lacher, M.; Picard, A. JF - Microelectronic Engineering. 41-42 (1998) Y1 - 1998 SN - 0167-9317 N1 - International Conference on Micro- and Nanofarbication SP - 47 EP - 52 ER -