@article{Digel2011,
  author    = {Digel, Ilya},
  title     = {Primary thermosensory events in cells},
  series = {Transient receptor potential channels / Md. Shahidul Islam, ed.},
  journal   = {Transient receptor potential channels / Md. Shahidul Islam, ed.},
  publisher = {Springer},
  address   = {Dordrecht [u.a.]},
  isbn      = {978-94-007-0264-6},
  pages     = {451 -- 468},
  year      = {2011},
  language  = {en}
}
@article{AbouzarWernerSchoeningetal.2011,
  author    = {Abouzar, Maryam H. and Werner, Moritz and Sch{\"o}ning, Michael Josef and Poghossian, Arshak},
  title     = {Capacitance-voltage and impedance-spectroscopy characteristics of nanoplate EISOI capacitors},
  series = {Physica status solidi (a) : applications and material science. 208 (2011), H. 6},
  journal   = {Physica status solidi (a) : applications and material science. 208 (2011), H. 6},
  publisher = {Wiley-VCH},
  address   = {Berlin},
  isbn      = {1862-6319},
  pages     = {1327 -- 1332},
  year      = {2011},
  language  = {en}
}
@article{PoghossianMalzahnAbouzaretal.2011,
  author    = {Poghossian, Arshak and Malzahn, K. and Abouzar, Maryam H. and Mehndiratta, P. and Katz, E. and Sch{\"o}ning, Michael Josef},
  title     = {Integration of biomolecular logic gates with field-effect transducers},
  series = {Electrochimica Acta. 56 (2011), H. 26},
  journal   = {Electrochimica Acta. 56 (2011), H. 26},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {0013-4686},
  pages     = {9661 -- 9665},
  year      = {2011},
  language  = {en}
}
@article{SeifarthSchehlLinderetal.2011,
  author    = {Seifarth, Volker and Schehl, D. and Linder, Peter and Gossmann, Matthias and Digel, Ilya and Artmann, Gerhard and Porst, Dariusz and Preiß, C. and Kayser, Peter and Pack, O. and Temiz Artmann, Ayseg{\"u}l},
  title     = {Ureplace: development of a bioreactor for in vitro culturing of cell seeded tubular vessels on collagen scaffolds},
  year      = {2011},
  abstract  = {The demand of replacements for inoperable organs exceeds the amount of available organ transplants. Therefore, tissue engineering developed as a multidisciplinary field of research for autologous in-vitro organs. Such three dimensional tissue constructs request the application of a bioreactor. The UREPLACE bioreactor is used to grow cells on tubular collagen scaffolds OPTIMAIX Sponge 1 with a maximal length of 7 cm, in order to culture in vitro an adequate ureter replacement. With a rotating unit, (urothelial) cells can be placed homogeneously on the inner scaffold surface. Furthermore, a stimulation is combined with this bioreactor resulting in an orientation of muscle cells. These culturing methods request a precise control of several parameters and actuators. A combination of a LabBox and the suitable software LabVision is used to set and conduct parameters like rotation angles, velocities, pressures and other important cell culture values. The bioreactor was tested waterproof successfully. Furthermore, the temperature controlling was adjusted to 37 °C and the CO2 - concentration regulated to 5 \%. Additionally, the pH step responses of several substances showed a perfect functioning of the designed flow chamber. All used software was tested and remained stable for several days.},
  subject      = {Tissue Engineering},
  language  = {en}
}
@article{BaeckerDellePoghossianetal.2011,
  author    = {B{\"a}cker, Matthias and Delle, L. and Poghossian, Arshak and Biselli, Manfred and Zang, Werner and Wagner, P. and Sch{\"o}ning, Michael Josef},
  title     = {Electrochemical sensor array for bioprocess monitoring},
  series = {Electrochimica Acta (2011)},
  volume    = {56},
  journal   = {Electrochimica Acta (2011)},
  number    = {26},
  publisher = {Elsevier},
  address   = {Amsterdam},
  pages     = {9673 -- 9678},
  year      = {2011},
  language  = {en}
}
@article{SchifferFerreinLakemeyer2011,
  author    = {Schiffer, Stefan and Ferrein, Alexander and Lakemeyer, Gerhard},
  title     = {Reasoning with Qualitative Positional Information for Domestic Domains in the Situation Calculus},
  series = {Journal of Intelligent \& Robotic Systems},
  volume    = {63},
  journal   = {Journal of Intelligent \& Robotic Systems},
  number    = {2},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {0921-0296},
  pages     = {273 -- 300},
  year      = {2011},
  language  = {en}
}
@article{KurulganDemirciDemirciTrzewiketal.2011,
  author    = {Kurulgan Demirci, Eylem and Demirci, T. and Trzewik, J{\"u}rgen and Linder, Peter and Karakulah, G. and Artmann, Gerhard and Sakizli, M. and Temiz Artmann, Ayseg{\"u}l},
  title     = {Genome-Wide Gene Expression Analysis of NIH 3T3 Cell Line Under Mechanical Stimulation},
  series = {Cellular and molecular bioengineering. 4 (2011), H. 1},
  journal   = {Cellular and molecular bioengineering. 4 (2011), H. 1},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {1865-5025},
  pages     = {46 -- 55},
  year      = {2011},
  language  = {en}
}
@article{HuckJollyWagneretal.2011,
  author    = {Huck, Christina and Jolly, Christina and Wagner, Patrick and Poghossian, Arshak and Sch{\"o}ning, Michael Josef},
  title     = {One-chip integrated dual amperometric/field-effect sensor for the detection of dissolved hydrogen},
  series = {Procedia Engineering. 25 (2011)},
  journal   = {Procedia Engineering. 25 (2011)},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {1877-7058},
  pages     = {1161 -- 1164},
  year      = {2011},
  language  = {en}
}
@article{PothMonzonTippkoetteretal.2011,
  author    = {Poth, Sebastian and Monzon, Magaly and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {Lignocellulosic biorefinery: Process integration of hydrolysis and fermentation (SSF process)},
  series = {Holzforschung},
  volume    = {65},
  journal   = {Holzforschung},
  number    = {5},
  publisher = {De Gruyter},
  address   = {Berlin},
  pages     = {633 -- 637},
  year      = {2011},
  abstract  = {The aim of the present work is the process integration and the optimization of the enzymatic hydrolysis of wood and the following fermentation of the products to ethanol. The substrate is a fiber fraction obtained by organosolv pre-treatment of beech wood. For the ethanol production, a co-fermentation by two different yeasts (Saccharomyces cerevisiae and Pachysolen tannophilus) was carried out to convert glucose as well as xylose. Two approaches has been followed: 1. A two step process, in which the hydrolysis of the fiber fraction and the fermentation to product are separated from each other. 2. A process, in which the hydrolysis and the fermentation are carried out in one single process step as simultaneous saccharification and fermentation (SSF). Following the first approach, a yield of about 0.15 g ethanol per gram substrate can be reached. Based on the SSF, one process step can be saved, and additionally, the gained yield can be raised up to 0.3 g ethanol per gram substrate.},
  language  = {en}
}
@article{MartinFrauenrathOezerdemetal.2011,
  author    = {Martin, Conrad and Frauenrath, Tobias and {\"O}zerdem, Celal and Renz, Wolfgang and Niendorf, Thoralf},
  title     = {Development and evaluation of a small and mobile Magneto Alert Sensor (MALSE) to support safety requirements for magnetic resonance imaging},
  series = {European Radiology},
  volume    = {21},
  journal   = {European Radiology},
  publisher = {Springer},
  address   = {Berlin, Heidelberg},
  issn      = {1432-1084},
  doi       = {10.1007/s00330-011-2153-z},
  pages     = {2187 -- 2192},
  year      = {2011},
  abstract  = {Objective The purpose of this study is to (i) design a small and mobile Magnetic field ALert SEnsor (MALSE), (ii) to carefully evaluate its sensors to their consistency of activation/deactivation and sensitivity to magnetic fields, and (iii) to demonstrate the applicability of MALSE in 1.5 T, 3.0 T and 7.0 T MR fringe field environments. Methods MALSE comprises a set of reed sensors, which activate in response to their exposure to a magnetic field. The activation/deactivation of reed sensors was examined by moving them in/out of the fringe field generated by 7TMR. Results The consistency with which individual reed sensors would activate at the same field strength was found to be 100\% for the setup used. All of the reed switches investigated required a substantial drop in ambient magnetic field strength before they deactivated. Conclusions MALSE is a simple concept for alerting MRI staff to a ferromagnetic object being brought into fringe magnetic fields which exceeds MALSEs activation magnetic field. MALSE can easily be attached to ferromagnetic objects within the vicinity of a scanner, thus creating a barrier for hazardous situations induced by ferromagnetic parts which should not enter the vicinity of an MR-system to occur.},
  language  = {en}
}
@article{DieringerRenzLindeletal.2011,
  author    = {Dieringer, Matthias A. and Renz, Wolfgang and Lindel, Tomasz D. and Seifert, Frank and Frauenrath, Tobias and von Knobelsdorf-Brenkenhoff, Florian and Waiczies, Helmar and Hoffmann, Werner and Rieger, Jan and Pfeiffer, Harald and Ittermann, Bernd and Schulz-Menger, Jeanette and Niendorf, Thoralf},
  title     = {Design and application of a four-channel transmit/receive surface coil for functional cardiac imaging at 7T},
  series = {Journal of Magnetic Resonance Imaging},
  volume    = {33},
  journal   = {Journal of Magnetic Resonance Imaging},
  number    = {3},
  publisher = {Wiley-Liss},
  address   = {New York},
  issn      = {1522-2586},
  doi       = {10.1002/jmri.22451},
  pages     = {736 -- 741},
  year      = {2011},
  abstract  = {Purpose To design and evaluate a four-channel cardiac transceiver coil array for functional cardiac imaging at 7T. Materials and Methods A four-element cardiac transceiver surface coil array was developed with two rectangular loops mounted on an anterior former and two rectangular loops on a posterior former. specific absorption rate (SAR) simulations were performed and a Burn:x-wiley:10531807:media:JMRI22451:tex2gif-stack-1 calibration method was applied prior to obtain 2D FLASH CINE (mSENSE, R = 2) images from nine healthy volunteers with a spatial resolution of up to 1 × 1 × 2.5 mm3. Results Tuning and matching was found to be better than 10 dB for all subjects. The decoupling (S21) was measured to be >18 dB between neighboring loops, >20 dB for opposite loops, and >30 dB for other loop combinations. SAR values were well within the limits provided by the IEC. Imaging provided clinically acceptable signal homogeneity with an excellent blood-myocardium contrast applying the Burn:x-wiley:10531807:media:JMRI22451:tex2gif-stack-2 calibration approach. Conclusion A four-channel cardiac transceiver coil array for 7T was built, allowing for cardiac imaging with clinically acceptable signal homogeneity and an excellent blood-myocardium contrast. Minor anatomic structures, such as pericardium, mitral, and tricuspid valves and their apparatus, as well as trabeculae, were accurately delineated.},
  language  = {en}
}
@article{DachwaldWurm2011,
  author    = {Dachwald, Bernd and Wurm, Patrick},
  title     = {Mission analysis and performance comparison for an Advanced Solar Photon Thruster},
  series = {Advances in Space Research},
  volume    = {48},
  journal   = {Advances in Space Research},
  number    = {11},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0273-1177},
  pages     = {1858 -- 1868},
  year      = {2011},
  language  = {en}
}
@article{DigelTemizArtmann2011,
  author    = {Digel, Ilya and Temiz Artmann, Ayseg{\"u}l},
  title     = {The emperor's new body : seeking for a blueprint of limb regeneration in humans},
  series = {Stem cell engineering : principles and applications / Gerhard M. Artmann ... eds.},
  journal   = {Stem cell engineering : principles and applications / Gerhard M. Artmann ... eds.},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {978-3-642-11864-7},
  pages     = {3 -- 37},
  year      = {2011},
  language  = {en}
}
@article{GasparyanPoghossianVitusevichetal.2011,
  author    = {Gasparyan, Ferdinand V. and Poghossian, Arshak and Vitusevich, Svetlana A. and Petrychuk, Mykhaylo V. and Sydoruk, Viktor A. and Siqueira, Jos{\´e} R. Jr. and Oliveira, Osvaldo N. Jr. and Offenh{\"a}usser, Andreas and Sch{\"o}ning, Michael Josef},
  title     = {Low-Frequency Noise in Field-Effect Devices Functionalized With Dendrimer/Carbon-Nanotube Multilayers},
  series = {IEEE Sensors Journal. 11 (2011), H. 1},
  journal   = {IEEE Sensors Journal. 11 (2011), H. 1},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {1530-437X},
  pages     = {142 -- 149},
  year      = {2011},
  language  = {en}
}
@article{GunGutkinLevetal.2011,
  author    = {Gun, Jenny and Gutkin, Vitaly and Lev, Ovadia and Boyen, Hans-Gerd and Saitner, Marc and Wagner, Patrick and Olieslaeger, Marc D´ and Abouzar, Maryam H. and Poghossian, Arshak and Sch{\"o}ning, Michael Josef},
  title     = {Tracing gold nanoparticle charge by electrolyte-insulator-semiconductor devices},
  series = {Journal of Physical Chemistry C. 115 (2011), H. 11},
  journal   = {Journal of Physical Chemistry C. 115 (2011), H. 11},
  publisher = {American Cemical Society},
  address   = {Washington, DC},
  isbn      = {1932-7455},
  pages     = {4439 -- 4445},
  year      = {2011},
  language  = {en}
}
@article{BialonskiWendlerLehnertz2011,
  author    = {Bialonski, Stephan and Wendler, Martin and Lehnertz, Klaus},
  title     = {Unraveling spurious properties of interaction networks with tailored random networks},
  series = {Plos one},
  volume    = {6},
  journal   = {Plos one},
  number    = {8},
  publisher = {Plos},
  address   = {San Francisco},
  doi       = {10.1371/journal.pone.0022826},
  pages     = {e22826},
  year      = {2011},
  abstract  = {We investigate interaction networks that we derive from multivariate time series with methods frequently employed in diverse scientific fields such as biology, quantitative finance, physics, earth and climate sciences, and the neurosciences. Mimicking experimental situations, we generate time series with finite length and varying frequency content but from independent stochastic processes. Using the correlation coefficient and the maximum cross-correlation, we estimate interdependencies between these time series. With clustering coefficient and average shortest path length, we observe unweighted interaction networks, derived via thresholding the values of interdependence, to possess non-trivial topologies as compared to Erd{\"o}s-R{\´e}nyi networks, which would indicate small-world characteristics. These topologies reflect the mostly unavoidable finiteness of the data, which limits the reliability of typically used estimators of signal interdependence. We propose random networks that are tailored to the way interaction networks are derived from empirical data. Through an exemplary investigation of multichannel electroencephalographic recordings of epileptic seizures - known for their complex spatial and temporal dynamics - we show that such random networks help to distinguish network properties of interdependence structures related to seizure dynamics from those spuriously induced by the applied methods of analysis.},
  language  = {en}
}
@article{NiemuellerFerreinEckeletal.2011,
  author    = {Niem{\"u}ller, Tim and Ferrein, Alexander and Eckel, Gerhard and Pirro, David and Podbregar, Patrick and Kellner, Tobias and Rath, Christoph and Steinbauer, Gerald},
  title     = {Providing Ground-truth Data for the Nao Robot Platform},
  series = {RoboCup 2010: Robot Soccer World Cup XIV},
  journal   = {RoboCup 2010: Robot Soccer World Cup XIV},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {978-3-642-20217-9},
  pages     = {133 -- 144},
  year      = {2011},
  language  = {en}
}
@article{BragardConradvanHoeketal.2011,
  author    = {Bragard, Michael and Conrad, M. and van Hoek, H. and De Doncker, R. W.},
  title     = {The integrated emitter turn-off thyristor (IETO) : an innovative thyristor-based high power semiconductor device using MOS assisted turn-off},
  series = {IEEE transactions on industry applications},
  volume    = {47},
  journal   = {IEEE transactions on industry applications},
  number    = {5},
  publisher = {IEEE},
  address   = {New York},
  issn      = {0093-9994},
  doi       = {10.1109/TIA.2011.2161432},
  pages     = {2175 -- 2182},
  year      = {2011},
  language  = {en}
}
@article{EilmannZweifelBuchmannetal.2011,
  author    = {Eilmann, Britta and Zweifel, Roman and Buchmann, Nina and Graf Pannatier, Elisabeth and Rigling, Andreas},
  title     = {Drought alters timing, quantity, and quality of wood formation in Scots pine},
  series = {Journal of Experimental Botany},
  volume    = {62},
  journal   = {Journal of Experimental Botany},
  number    = {8},
  publisher = {Oxford University Press},
  address   = {Oxford},
  issn      = {1460-2431 (Online)},
  doi       = {10.1093/jxb/erq443},
  pages     = {2763 -- 2771},
  year      = {2011},
  language  = {en}
}
@article{GrinsvenVandenBonGrietenetal.2011,
  author    = {Grinsven, Bart van and Vanden Bon, Natalie and Grieten, Lars and Murib, Mohammed Sharif and Janssen, Stoffel Dominique and Haenen, Ken and Schneider, E. and Ingebrandt, Sven and Sch{\"o}ning, Michael Josef and Vermeeren, Veronique and Ameloot, Marcel and Michiels, Luc and Thoelen, Ronald and De Ceuninck, Ward A. and Wagner, Patrick},
  title     = {Rapid assessment of the stability of DNA duplexes by impedimetric real-time monitoring of chemically induced denaturation},
  series = {Lab on a Chip},
  volume    = {11},
  journal   = {Lab on a Chip},
  number    = {9},
  publisher = {Royal Society of Chemistry (RSC)},
  address   = {Cambridge},
  isbn      = {1473-0197},
  pages     = {1656 -- 1663},
  year      = {2011},
  language  = {en}
}
@article{WernerWagnerMiyamotoetal.2012,
  author    = {Werner, Frederik and Wagner, Torsten and Miyamoto, Ko-ichiro and Yoshinobu, Tatsuo and Sch{\"o}ning, Michael Josef},
  title     = {High speed and high resolution chemical imaging based on a new type of OLED-LAPS set-up},
  series = {Sensors and Actuators B: Chemical},
  volume    = {175},
  journal   = {Sensors and Actuators B: Chemical},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2011.12.102},
  pages     = {118 -- 122},
  year      = {2012},
  abstract  = {Light-addressable potentiometric sensors (LAPS) are field-effect-based sensors. A modulated light source is used to define the particular measurement spot to perform spatially resolved measurements of chemical species and to generate chemical images. In this work, an organic-LED (OLED) display has been chosen as a light source. This allows high measurement resolution and miniaturisation of the system. A new developed driving method for the OLED display optimised for LAPS-based measurements is demonstrated. The new method enables to define modulation frequencies between 1 kHz and 16 kHz and hence, reduces the measurement time of a chemical image by a factor of 40 compared to the traditional addressing of an OLED display.},
  language  = {en}
}
@article{WagnerWernerMiyamotoetal.2012,
  author    = {Wagner, Torsten and Werner, Frederik and Miyamoto, Ko-Ichiro and Sch{\"o}ning, Michael Josef and Yoshinobu, Tatsuo},
  title     = {Development and characterisation of a compact light-addressable potentiometric sensor (LAPS) based on the digital light processing (DLP) technology for flexible chemical imaging},
  series = {Sensors and Actuators B: Chemical},
  volume    = {170},
  journal   = {Sensors and Actuators B: Chemical},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2010.12.003},
  pages     = {34 -- 39},
  year      = {2012},
  abstract  = {Chemical imaging systems allow the visualisation of the distribution of chemical species on the sensor surface. This work represents a new flexible approach to read out light-addressable potentiometric sensors (LAPS) with the help of a digital light processing (DLP) set-up. The DLP, known well for video projectors, consists of a mirror-array MEMS device, which allows fast and flexible generation of light patterns. With the help of these light patterns, the sensor surface of the LAPS device can be addressed. The DLP approach has several advantages compared to conventional LAPS set-ups, e.g., the spot size and the shape of the light pointer can be changed easily and no mechanical movement is necessary, which reduces the size of the set-up and increases the stability and speed of the measurement. In addition, the modulation frequency and intensity of the light beam are important parameters of the LAPS set-up. Within this work, the authors will discuss two different ways of light modulation by the DLP set-up, investigate the influence of different modulation frequencies and different light intensities as well as demonstrate the scanning capabilities of the new set-up by pH mapping on the sensor surface.},
  language  = {en}
}
@article{MiyamotoKanekoMatsuoetal.2012,
  author    = {Miyamoto, Ko-ichiro and Kaneko, Kazumi and Matsuo, Akira and Wagner, Torsten and Kanoh, Shin{\´i}chiro and Sch{\"o}ning, Michael Josef and Yoshinobu, Tatsuo},
  title     = {Miniaturized chemical imaging sensor system using an OLED display panel},
  series = {Sensors and Actuators B: Chemical},
  volume    = {170},
  journal   = {Sensors and Actuators B: Chemical},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2011.02.029},
  pages     = {82 -- 87},
  year      = {2012},
  abstract  = {The chemical imaging sensor is a semiconductor-based chemical sensor that can visualize the two-dimensional distribution of specific ions or molecules in the solution. In this study, we developed a miniaturized chemical imaging sensor system with an OLED display panel as a light source that scans the sensor plate. In the proposed configuration, the display panel is placed directly below the sensor plate and illuminates the back surface. The measured area defined by illumination can be arbitrarily customized to fit the size and the shape of the sample to be measured. The waveform of the generated photocurrent, the current-voltage characteristics and the pH sensitivity were investigated and pH imaging with this miniaturized system was demonstrated.},
  language  = {en}
}
@article{KirchnerOberlaenderFriedrichetal.2012,
  author    = {Kirchner, Patrick and Oberl{\"a}nder, Jan and Friedrich, Peter and Berger, J{\"o}rg and Rysstad, Gunnar and Sch{\"o}ning, Michael Josef and Keusgen, Michael},
  title     = {Realisation of a calorimetric gas sensor on polyimide foil for applications in aseptic food industry},
  series = {Sensors and Actuators B: Chemical},
  volume    = {170},
  journal   = {Sensors and Actuators B: Chemical},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2011.01.032},
  pages     = {60 -- 66},
  year      = {2012},
  abstract  = {A calorimetric gas sensor is presented for the monitoring of vapour-phase H2O2 at elevated temperature during sterilisation processes in aseptic food industry. The sensor was built up on a flexible polyimide foil (thickness: 25 μm) that has been chosen due to its thermal stability and low thermal conductivity. The sensor set-up consists of two temperature-sensitive platinum thin-film resistances passivated by a layer of SU-8 photo resist and catalytically activated by manganese(IV) oxide. Instead of an active heating structure, the calorimetric sensor utilises the elevated temperature of the evaporated H2O2 aerosol. In an experimental test rig, the sensor has shown a sensitivity of 4.78 °C/(\%, v/v) in a H2O2 concentration range of 0\%, v/v to 8\%, v/v. Furthermore, the sensor possesses the same, unchanged sensor signal even at varied medium temperatures between 210 °C and 270 °C of the gas stream. At flow rates of the gas stream from 8 m3/h to 12 m3/h, the sensor has shown only a slightly reduced sensitivity at a low flow rate of 8 m3/h. The sensor characterisation demonstrates the suitability of the calorimetric gas sensor for monitoring the efficiency of industrial sterilisation processes.},
  language  = {en}
}
@article{AtlasBrealeyDharetal.2012,
  author    = {Atlas, Glen and Brealey, David and Dhar, Sunil and Dikta, Gerhard and Singer, Meryvn},
  title     = {Additional hemodynamic measurements with an esophageal Doppler monitor: a preliminary report of compliance, force, kinetic energy, and afterload in the clinical setting},
  series = {Journal of clinical monitoring and computing},
  journal   = {Journal of clinical monitoring and computing},
  number    = {26},
  publisher = {Springer Nature},
  address   = {London},
  isbn      = {1573-2614},
  doi       = {10.1007/s10877-012-9386-5},
  pages     = {473 -- 482},
  year      = {2012},
  abstract  = {The esophageal Doppler monitor (EDM) is a minimally-invasive hemodynamic device which evaluates both cardiac output (CO), and fluid status, by estimating stroke volume (SV) and calculating heart rate (HR). The measurement of these parameters is based upon a continuous and accurate approximation of distal thoracic aortic blood flow. Furthermore, the peak velocity (PV) and mean acceleration (MA), of aortic blood flow at this anatomic location, are also determined by the EDM. The purpose of this preliminary report is to examine additional clinical hemodynamic calculations of: compliance (C), kinetic energy (KE), force (F), and afterload (TSVRi). These data were derived using both velocity-based measurements, provided by the EDM, as well as other contemporaneous physiologic parameters. Data were obtained from anesthetized patients undergoing surgery or who were in a critical care unit. A graphical inspection of these measurements is presented and discussed with respect to each patient's clinical situation. When normalized to each of their initial values, F and KE both consistently demonstrated more discriminative power than either PV or MA. The EDM offers additional applications for hemodynamic monitoring. Further research regarding the accuracy, utility, and limitations of these parameters is therefore indicated.},
  language  = {en}
}
@article{IkenKirsanovLeginetal.2012,
  author    = {Iken, Heiko and Kirsanov, D. and Legin, A. and Sch{\"o}ning, Michael Josef},
  title     = {Novel Thin-Film Polymeric Materials for the Detection of Heavy Metals},
  series = {Procedia Engineering},
  journal   = {Procedia Engineering},
  number    = {47},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1877-7058},
  doi       = {10.1016/j.proeng.2012.09.148},
  pages     = {322 -- 325},
  year      = {2012},
  abstract  = {A variety of transition metals, e.g., copper, zinc, cadmium, lead, etc. are widely used in industry as components for wires, coatings, alloys, batteries, paints and so on. The inevitable presence of transition metals in industrial processes implies the ambition of developing a proper analytical technique for their adequate monitoring. Most of these elements, especially lead and cadmium, are acutely toxic for biological organisms. Quantitative determination of these metals at low activity levels in different environmental and industrial samples is therefore a vital task. A promising approach to achieve an at-side or on-line monitoring on a miniaturized and cost efficient way is the combination of a common potentiometric sensor array with heavy metal-sensitive thin-film materials, like chalcogenide glasses and polymeric materials, respectively.},
  language  = {en}
}
@article{MiyamotoIchimuraWagneretal.2012,
  author    = {Miyamoto, K. and Ichimura, H. and Wagner, Torsten and Yoshinobu, T. and Sch{\"o}ning, Michael Josef},
  title     = {Chemical Imaging of ion Diffusion in a Microfluidic Channel},
  series = {Procedia Engineering},
  journal   = {Procedia Engineering},
  number    = {47},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1877-7058},
  doi       = {10.1016/j.proeng.2012.09.289},
  pages     = {886 -- 889},
  year      = {2012},
  abstract  = {The chemical imaging sensor is a chemical sensor which is capable of visualizing the spatial distribution of chemical species in sample solution. In this study, a novel measurement system based on the chemical imaging sensor was developed to observe the inside of a Y-shaped microfluidic channel while injecting two sample solutions from two branches. From the collected chemical images, it was clearly observed that the injected solutions formed laminar flows in the microfluidic channel. In addition, ion diffusion across the laminar flows was observed. This label-free method can acquire quantitative data of ion distribution and diffusion in microfluidic devices, which can be used to determine the diffusion coefficients, and therefore, the molecular weights of chemical species in the sample solution.},
  language  = {en}
}
@article{WagnerShigiaharaMiyamotoetal.2012,
  author    = {Wagner, Torsten and Shigiahara, N. and Miyamoto, K. and Suzurikawa, J. and Finger, F. and Sch{\"o}ning, Michael Josef and Yoshinobu, T.},
  title     = {Light-addressable Potentiometric Sensors and Light-addressable Electrodes as a Combined Sensor-and-manipulator Microsystem with High Flexibility},
  series = {Procedia Engineering},
  journal   = {Procedia Engineering},
  number    = {47},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1877-7058},
  doi       = {10.1016/j.proeng.2012.09.290},
  pages     = {890 -- 893},
  year      = {2012},
  abstract  = {This work describes the novel combination of the light-addressable electrode (LAE) and the light-addressable potentiometric sensor (LAPS) into a microsystem set-up. Both the LAE as well as the LAPS shares the principle of addressing the active spot by means of a light beam. This enables both systems to manipulate resp. to detect an analyte with a high spatial resolution. Hence, combining both principles into a single set-up enables the active stimulation e.g., by means of electrolysis and a simultaneous observation e.g., the response of an entrapped biological cell by detection of extracellular pH changes. The work will describe the principles of both technologies and the necessary steps to integrate them into a single set-up. Furthermore, examples of application and operation of such systems will be presented.},
  language  = {en}
}
@article{MuribTranCeunincketal.2012,
  author    = {Murib, Mohammed S. and Tran, Anh Quang and Ceuninck, Ward de and Sch{\"o}ning, Michael Josef and Nesladek, Milos and Serpeng{\"u}zel, Ali and Wagner, Patrick},
  title     = {Analysis of an optical biosensor based on elastic light scattering from diamond-, glass-, and sapphire microspheres},
  series = {Physica Status Solidi A},
  volume    = {209},
  journal   = {Physica Status Solidi A},
  number    = {9},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1862-6319},
  doi       = {10.1002/pssa.201100795},
  pages     = {1804 -- 1810},
  year      = {2012},
  abstract  = {Deoxyribonucleic acid (DNA) and protein recognition are now standard tools in biology. In addition, the special optical properties of microsphere resonators expressed by the high quality factor (Q-factor) of whispering gallery modes (WGMs) or morphology dependent resonances (MDRs) have attracted the attention of the biophotonic community. Microsphere-based biosensors are considered as powerful candidates to achieve label-free recognition of single molecules due to the high sensitivity of their WGMs. When the microsphere surface is modified with biomolecules, the effective refractive index and the effective size of the microsphere change resulting in a resonant wavelength shift. The transverse electric (TE) and the transverse magnetic (TM) elastic light scattering intensity of electromagnetic waves at 600 and 1400 nm are numerically calculated for DNA and unspecific binding of proteins to the microsphere surface. The effect of changing the optical properties was studied for diamond (refractive index 2.34), glass (refractive index 1.50), and sapphire (refractive index 1.75) microspheres with a 50 µm radius. The mode spacing, the linewidth of WGMs, and the shift of resonant wavelength due to the change in radius and refractive index, were analyzed by numerical simulations. Preliminary results of unspecific binding of biomolecules are presented. The calculated shift in WGMs can be used for biomolecules detection.},
  language  = {en}
}
@article{GutheilBergGrotendorst2012,
  author    = {Gutheil, Inge and Berg, Tommy and Grotendorst, Johannes},
  title     = {Performance Analysis of Parallel Eigensolvers of two Libraries on BlueGene/P},
  series = {Journal of Mathematics and Systems Science},
  volume    = {2},
  journal   = {Journal of Mathematics and Systems Science},
  number    = {4},
  publisher = {David Publishing},
  address   = {Libertyville},
  issn      = {2159-5291},
  doi       = {10.17265/2159-5291/2012.04.003},
  pages     = {231 -- 236},
  year      = {2012},
  abstract  = {Many applications in computational science and engineering require the computation of eigenvalues and vectors of dense symmetric or Hermitian matrices. For example, in DFT (density functional theory) calculations on modern supercomputers 10\% to 30\% of the eigenvalues and eigenvectors of huge dense matrices have to be calculated. Therefore, performance and parallel scaling of the used eigensolvers is of upmost interest. In this article different routines of the linear algebra packages ScaLAPACK and Elemental for parallel solution of the symmetric eigenvalue problem are compared concerning their performance on the BlueGene/P supercomputer. Parameters for performance optimization are adjusted for the different data distribution methods used in the two libraries. It is found that for all test cases the new library Elemental which uses a two-dimensional element by element distribution of the matrices to the processors shows better performance than the old ScaLAPACK library which uses a block-cyclic distribution.},
  language  = {en}
}
@article{Grotendorst2012,
  author    = {Grotendorst, Johannes},
  title     = {IAS Winter School: Hierarchical Methods for Dynamics in Complex Molecular Systems},
  series = {Innovatives Supercomputing in Deutschland : inSiDE. 10 (2012), H. 1},
  journal   = {Innovatives Supercomputing in Deutschland : inSiDE. 10 (2012), H. 1},
  publisher = {-},
  pages     = {104},
  year      = {2012},
  language  = {en}
}
@article{NomdedeuWillenSchiefferetal.2012,
  author    = {Nomdedeu, Mar Monsonis and Willen, Christine and Schieffer, Andre and Arndt, Hartmut},
  title     = {Temperature-dependent ranges of coexistence in a model of a two-prey-one-predator microbial food web},
  series = {Marine Biology},
  volume    = {159},
  journal   = {Marine Biology},
  number    = {11},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1432-1793},
  doi       = {10.1007/s00227-012-1966-x},
  pages     = {2423 -- 2430},
  year      = {2012},
  abstract  = {The objective of our study was to analyze the effects of temperature on the population dynamics of a three-species food web consisting of two prey bacteria (Pedobacter sp. and Acinetobacter johnsonii) and a protozoan predator (Tetrahymena pyriformis) as model organisms. We assessed the effects of temperature on the growth rates of all three species with the objective of developing a model with four differential equations based on the experimental data. The following hypotheses were tested at a theoretical level: Firstly, temperature changes can affect the dynamic behavior of a system by temperature-dependent parameters and interactions and secondly, food web response to temperature cannot be derived from the single species temperature response. The main outcome of the study is that temperature changes affect the parameter range where coexistence is possible within all three species. This has significant consequences on our ideas regarding the evaluation of effects of global warming.},
  language  = {en}
}
@article{LustfeldPithanReissel2012,
  author    = {Lustfeld, H. and Pithan, C. and Reißel, Martin},
  title     = {Metallic electrolyte composites in the framework of the brick-layer model},
  series = {Journal of the European Ceramic Society},
  volume    = {32},
  journal   = {Journal of the European Ceramic Society},
  number    = {4},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0955-2219},
  doi       = {10.1016/j.jeurceramsoc.2011.10.017},
  pages     = {859 -- 864},
  year      = {2012},
  abstract  = {It is well known that the already large dielectric constants of some electrolytes like BaTiO₃ can be enhanced further by adding metallic (e.g. Ni, Cu or Ag) nanoparticles. The enhancement can be quite large, a factor of more than 1000 is possible. The consequences for the properties will be discussed in the present paper applying a brick-layer model (BLM) for calculating dc-resistivities of thin layers and a modified one (PBLM) that includes percolation for calculating dielectric properties of these materials. The PBLM results in an at least qualitative description and understanding of the physical phenomena: This model gives an explanation for the steep increase of the dielectric constant below the percolation threshold and why this increase is connected to a dramatic decrease of the breakdown voltage as well as the ability of storing electrical energy. We conclude that metallic electrolyte composites like BaTiO₃ are not appropriate for energy storage.},
  language  = {en}
}
@article{LeursMezoOehlschlaegeretal.2012,
  author    = {Leurs, Ulrike and Mezo, Gabor and {\"O}hlschl{\"a}ger, Peter and Orban, Erika and Marquard, Andrea and Manea, Marilena},
  title     = {Design, synthesis, in vitro stability and cytostatic effect of multifunctional anticancer drug-bioconjugates containing GnRH-III as a targeting moiety},
  series = {Peptide Science},
  volume    = {98},
  journal   = {Peptide Science},
  number    = {1},
  publisher = {Wiley},
  address   = {New York, NY},
  issn      = {1097-0282},
  doi       = {10.1002/bip.21640},
  pages     = {1 -- 10},
  year      = {2012},
  abstract  = {Bioconjugates containing the GnRH-III hormone decapeptide as a targeting moiety are able to deliver chemotherapeutic agents specifically to cancer cells expressing GnRH receptors, thereby increasing their local efficacy while limiting the peripheral toxicity. However, the number of GnRH receptors on cancer cells is limited and they desensitize under continuous hormone treatment. A possible approach to increase the receptor mediated tumor targeting and consequently the cytostatic effect of the bioconjugates would be the attachment of more than one chemotherapeutic agent to one GnRH-III molecule. Here we report on the design, synthesis and biochemical characterization of multifunctional bioconjugates containing GnRH-III as a targeting moiety and daunorubicin as a chemotherapeutic agent. Two different drug design approaches were pursued. The first one was based on the bifunctional [4Lys]-GnRH-III (Glp-His-Trp-Lys-His-Asp-Trp-Lys-Pro-Gly-NH2) containing two lysine residues in positions 4 and 8, whose ϵ-amino groups were used for the coupling of daunorubicin. In the second drug design, the native GnRH-III (Glp-His-Trp-Ser-His-Asp-Trp-Lys-Pro-Gly-NH2) was used as a scaffold; an additional lysine residue was coupled to the ϵ-amino group of 8Lys in order to generate two free amino groups available for conjugation of daunorubicin. The in vitro stability/degradation of all synthesized compounds was investigated in human serum, as well as in the presence of rat liver lysosomal homogenate. Their cellular uptake was determined on human breast cancer cells and the cytostatic effect was evaluated on human breast, colon and prostate cancer cell lines. Compared with a monofunctional compound, both drug design approaches resulted in multifunctional bioconjugates with increased cytostatic effect.},
  language  = {en}
}
@article{GrinsvenBonStrauvenetal.2012,
  author    = {Grinsven, Bart van and Bon, Natalie vanden and Strauven, Hannelore and Grieten, Lars and Murib, Mohammed and Jim{\´e}nez Monroy, Kathia L. and Janssens, Stoffel D. and Haenen, Ken and Sch{\"o}ning, Michael Josef and Vermeeren, Veronique and Ameloot, Marcel and Michiels, Luc and Thoelen, Ronald and Ceuninck, Ward de and Wagner, Patrick},
  title     = {Heat-Transfer Resistance at Solid-Liquid Interfaces: A Tool for The Detection of Single Nucleotide Polymorphisms in DNA.},
  series = {ACS Nano},
  volume    = {6},
  journal   = {ACS Nano},
  number    = {3},
  publisher = {ACS Publications},
  address   = {Washington, DC},
  issn      = {1936-086X},
  doi       = {10.1021/nn300147e},
  pages     = {2712 -- 2721},
  year      = {2012},
  abstract  = {In this article, we report on the heat-transfer resistance at interfaces as a novel, denaturation-based method to detect single-nucleotide polymorphisms in DNA. We observed that a molecular brush of double-stranded DNA grafted onto synthetic diamond surfaces does not notably affect the heat-transfer resistance at the solid-to-liquid interface. In contrast to this, molecular brushes of single-stranded DNA cause, surprisingly, a substantially higher heat-transfer resistance and behave like a thermally insulating layer. This effect can be utilized to identify ds-DNA melting temperatures via the switching from low- to high heat-transfer resistance. The melting temperatures identified with this method for different DNA duplexes (29 base pairs without and with built-in mutations) correlate nicely with data calculated by modeling. The method is fast, label-free (without the need for fluorescent or radioactive markers), allows for repetitive measurements, and can also be extended toward array formats. Reference measurements by confocal fluorescence microscopy and impedance spectroscopy confirm that the switching of heat-transfer resistance upon denaturation is indeed related to the thermal on-chip denaturation of DNA.},
  language  = {en}
}
@article{OlaruKowalskiSethietal.2012,
  author    = {Olaru, Alexandra Maria and Kowalski, Julia and Sethi, Vaishali and Bl{\"u}mich, Bernhard},
  title     = {Exchange relaxometry of flow at small P{\´e}clet numbers in a glass bead pack},
  series = {Journal of Magnetic Resonance (JMR)},
  volume    = {220},
  journal   = {Journal of Magnetic Resonance (JMR)},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1096-0856},
  doi       = {10.1016/j.jmr.2012.04.015},
  pages     = {32 -- 44},
  year      = {2012},
  abstract  = {In this paper we consider low P{\´e}clet number flow in bead packs. A series of relaxation exchange experiments has been conducted and evaluated by ILT analysis. In the resulting correlation maps, we observed a collapse of the signal and a translation towards smaller relaxation times with increasing flow rates, as well as a signal tilt with respect to the diagonal. In the discussion of the phenomena we present a mathematical theory for relaxation exchange experiments that considers both diffusive and advective transport. We perform simulations based on this theory and discuss them with respect to the conducted experiments.},
  language  = {en}
}
@article{FischerKowalskiPudasaini2012,
  author    = {Fischer, Jan-Thomas and Kowalski, Julia and Pudasaini, Shiva P.},
  title     = {Topographic curvature effects in applied avalanche modelling},
  series = {Cold Regions Science and Technology},
  volume    = {74-75},
  journal   = {Cold Regions Science and Technology},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1872-7441},
  doi       = {10.1016/j.coldregions.2012.01.005},
  pages     = {21 -- 30},
  year      = {2012},
  abstract  = {This paper describes the implementation of topographic curvature effects within the RApid Mass MovementS (RAMMS) snow avalanche simulation toolbox. RAMMS is based on a model similar to shallow water equations with a Coulomb friction relation and the velocity dependent Voellmy drag. It is used for snow avalanche risk assessment in Switzerland. The snow avalanche simulation relies on back calculation of observed avalanches. The calibration of the friction parameters depends on characteristics of the avalanche track. The topographic curvature terms are not yet included in the above mentioned classical model. Here, we fundamentally improve this model by mathematically and physically including the topographic curvature effects. By decomposing the velocity dependent friction into a topography dependent term that accounts for a curvature enhancement in the Coulomb friction, and a topography independent contribution similar to the classical Voellmy drag, we construct a general curvature dependent frictional resistance, and thus propose new extended model equations. With three site-specific examples, we compare the apparent frictional resistance of the new approach, which includes topographic curvature effects, to the classical one. Our simulation results demonstrate substantial effects of the curvature on the flow dynamics e.g., the dynamic pressure distribution along the slope. The comparison of resistance coefficients between the two models demonstrates that the physically based extension presents an improvement to the classical approach. Furthermore a practical example highlights its influence on the pressure outline in the run out zone of the avalanche. Snow avalanche dynamics modeling natural terrain curvature centrifugal force friction coefficients.},
  language  = {en}
}
@article{PieperKlein2012,
  author    = {Pieper, Martin and Klein, Peter},
  title     = {Application of simple, periodic homogenization techniques to non-linear heat conduction problems in non-periodic, porous media},
  series = {Heat mass transfer},
  volume    = {48},
  journal   = {Heat mass transfer},
  number    = {2},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {0947-7411},
  doi       = {10.1007/s00231-011-0879-4},
  pages     = {291 -- 300},
  year      = {2012},
  abstract  = {Often, detailed simulations of heat conduction in complicated, porous media have large runtimes. Then homogenization is a powerful tool to speed up the calculations by preserving accurate solutions at the same time. Unfortunately real structures are generally non-periodic, which requires unpractical, complicated homogenization techniques. We demonstrate in this paper, that the application of simple, periodic techniques to realistic media, that are just close to periodic, gives accurate, approximative solutions. In order to obtain effective parameters for the homogenized heat equation, we have to solve a so called "cell problem". In contrast to periodic structures it is not trivial to determine a suitable unit cell, which represents a non-periodic media. To overcome this problem, we give a rule of thumb on how to choose a good cell. Finally we demonstrate the efficiency of our method for virtually generated foams as well as real foams and compare these results to periodic structures.},
  language  = {en}
}
@article{FateriHoetterGebhardt2012,
  author    = {Fateri, Miranda and H{\"o}tter, Jan-Steffen and Gebhardt, Andreas},
  title     = {Experimental and Theoretical Investigation of Buckling Deformation of Fabricated Objects by Selective Laser Melting},
  series = {Physics Procedia},
  volume    = {39},
  journal   = {Physics Procedia},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1875-3892},
  doi       = {10.1016/j.phpro.2012.10.062},
  pages     = {464 -- 470},
  year      = {2012},
  abstract  = {Although Selective Laser Melting (SLM) process is an innovative manufacturing method, there are challenges such as inferior mechanical properties of fabricated objects. Regarding this, buckling deformation which is caused by thermal stress is one of the undesired mechanical properties which must be alleviated. As buckling deformation is more observable in hard to process materials, silver is selected to be studied theoretically and experimentally for this paper. Different scanning strategies are utilized and a Finite Element Method (FEM) is applied to calculate the temperature gradient in order to determine its effect on the buckling deformation of the objects from experiments.},
  language  = {en}
}
@article{KirsteinMuellerWaleckiMingersetal.2012,
  author    = {Kirstein, Simon and M{\"u}ller, Karsten and Walecki-Mingers, Mark and Deserno, Thomas M.},
  title     = {Robust adaptive flow line detection in sewer pipes},
  series = {Automation in construction},
  journal   = {Automation in construction},
  number    = {21},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1872-7891 (E-Journal) ; 0926-5805 (Print)},
  doi       = {10.1016/j.autcon.2011.05.009},
  pages     = {24 -- 31},
  year      = {2012},
  abstract  = {As part of a novel approach to automatic sewer inspection, this paper presents a robust algorithm for automatic flow line detection. A large image repository is obtained from about 50,000 m sewers to represent the high variability of real world sewer systems. Automatic image processing combines Canny edge detection, Hough transform for straight lines and cost minimization using Dijkstra's shortest path algorithm. Assuming that flow lines are mostly smoothly connected horizontal structures, piecewise flow line delineation is reduced to a process of selecting adjacent line candidates. Costs are derived from the gap between adjacent candidates and their reliability. A single parameter α enables simple control of the algorithm. The detected flow line may precisely follow the segmented edges (α = 0.0) or minimize gaps at joints (α = 1.0). Both, manual and ground truth-based analysis indicate that α = 0.8 is optimal and independent of the sewer's material. The algorithm forms an essential step to further automation of sewer inspection.},
  language  = {en}
}
@article{SpelthahnKirsanovLeginetal.2012,
  author    = {Spelthahn, Heiko and Kirsanov, Dmitry and Legin, Andrey and Osterrath, Thomas and Schubert, J{\"u}rgen and Zander, Willi and Sch{\"o}ning, Michael Josef},
  title     = {Development of a thin-film sensor array for analytical monitoring of heavy metals in aqueous solutions},
  series = {Physica Status Solidi (a)},
  volume    = {209},
  journal   = {Physica Status Solidi (a)},
  number    = {5},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  isbn      = {1862-6319},
  doi       = {10.1002/pssa.201100733},
  pages     = {885 -- 891},
  year      = {2012},
  abstract  = {In industrial processes there is a variety of heavy metals (e.g., copper, zinc, cadmium, and lead) in use for wires, coatings, paints, alloys, batteries, etc. Since the application of these transition metals for industry is inevitable, it is a vital task to develop proper analytical techniques for their monitoring at low activity levels, especially because most of these elements are acutely toxic for biological organisms. The determination of ions in solution by means of a simple and inexpensive sensor array is, therefore, a promising task. In this work, a sensor array with heavy metal-sensitive chalcogenide glass membranes for the simultaneous detection of the four ions Ag⁺, Cu2⁺, Cd2⁺, and Pb2⁺ in solution is realized. The results of the physical characterization by means of microscopy, profilometry, Rutherford backscattering spectroscopy (RBS), and scanning electron microscopy (SEM) as well as the electrochemical characterization by means of potentiometric measurements are presented. Additionally, the possibility to expand the sensor array by polymeric sensor membranes is discussed.},
  language  = {en}
}
@article{SpelthahnSchubertSchoening2012,
  author    = {Spelthahn, Heiko and Schubert, J{\"u}rgen and Sch{\"o}ning, Michael Josef},
  title     = {D{\"u}nnschichtsensoren f{\"u}r die Schwermetallanalytik},
  series = {GIT : Labor-Fachzeitschrift},
  volume    = {56},
  journal   = {GIT : Labor-Fachzeitschrift},
  number    = {4},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {0016-3538},
  pages     = {285 -- 287},
  year      = {2012},
  abstract  = {Die Detektion von Schadstoffen repr{\"a}sentiert in der Umweltanalytik eine wichtige Aufgabenstellung. Gerade die Abwasser- bzw. Brauchwasseranalytik sowie die Prozesskontrolle haben einen hohen Stellenwert. Siliziumbasierte D{\"u}nnschichtsensoren bieten eine kosteng{\"u}nstige M{\"o}glichkeit, „online"-Messungen bzw. Vor-Ort-Messungen zeitnah durchzuf{\"u}hren. In dieser Arbeit wird ein potentiometrisches Sensorarray auf der Basis von Chalkogenidgl{\"a}sern zur Detektion von Schwermetallen in w{\"a}ssrigen Medien vorgestellt.},
  language  = {en}
}
@article{KotliarLanzlHanssenetal.2012,
  author    = {Kotliar, Konstantin and Lanzl, Ines M. and Hanssen, Henner and Eberhardt, Karla and Vilser, Walthard and Halle, Martin and Heemann, Uwe and Schmidt-Trucks{\"a}ss, Arno and Baumann, Marcus},
  title     = {Does increased blood pressure rather than aging influence retinal pulse wave velocity?},
  series = {Investigative Ophthalmology \& Visual Science, IOVS},
  volume    = {53},
  journal   = {Investigative Ophthalmology \& Visual Science, IOVS},
  number    = {4},
  publisher = {ARVO},
  address   = {Rockville, Md.},
  issn      = {0146-0404},
  doi       = {10.1167/iovs.11-8815},
  pages     = {2119 -- 2126},
  year      = {2012},
  abstract  = {Purpose: It was demonstrated previously that retinal pulse wave velocity (rPWV) as a measure of retinal arterial stiffness is increased in aged anamnestically healthy volunteers compared with young healthy subjects. Using novel methodology of rPWV assessment this finding was confirmed and investigated whether it might relate to the increased blood pressure usually accompanying the aging process, rather than to the aging itself. Methods: A total of 12 young 25.5-year-old (24.0-28.8) [median(1st quartile-3rd quartile)] and 12 senior 68.5-year-old (63.8-71.8) anamnestically healthy volunteers; and 12 senior 63.0-year-old (60.8-65.0) validated healthy volunteers and 12 young 33.0-year-old (29.5-35.0) hypertensive patients were examined. Time-dependent alterations of vessel diameter were assessed by the Dynamic Vessel Analyzer in a retinal artery of each subject. The data were filtered and processed using mathematical signal analysis and rPWVs were calculated. Results: rPWV amounted to 1200 (990-1470) RU (relative units)/s in the hypertensive group and to 1040 (700-2230) RU/s in anamnestically healthy seniors. These differed significantly from rPWVs in young healthy group (410 [280-500] RU/s) and in validated healthy seniors (400 [320-510] RU/s). rPWV associated with age and mean arterial pressure (MAP) in the pooled cohort excluded validated healthy seniors. In a regression model these associations remain when alternately adjusted for MAP and age. When including validated healthy seniors in the pooled cohort only association with MAP remains. Conclusions: Both aging (with not excluded cardiovascular risk factors) and mild hypertension are associated with elevated rPWV. rPWV increases to a similar extent both in young mildly hypertensive subjects and in aged anamnestically healthy persons. Healthy aging is not associated with increased rPWV.},
  language  = {en}
}
@article{BohrnStuetzFuchsetal.2012,
  author    = {Bohrn, U. and St{\"u}tz, E. and Fuchs, K. and Fleischer, M. and Sch{\"o}ning, Michael Josef and Wagner, P.},
  title     = {Monitoring of irritant gas using a whole-cell-based sensor system},
  series = {Sensors and Actuators B: Chemical},
  volume    = {175},
  journal   = {Sensors and Actuators B: Chemical},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2012.05.088},
  pages     = {208 -- 217},
  year      = {2012},
  abstract  = {Cell-based sensors for the detection of gases have long been underrepresented, due to the cellular requirement of being cultured in a liquid environment. In this work we established a cell-based gas biosensor for the detection of toxic substances in air, by adapting a commercial sensor chip (Bionas®), previously used for the measurement of pollutants in liquids. Cells of the respiratory tract (A549, RPMI 2650, V79), which survive at a gas phase in a natural context, are used as biological receptors. The physiological cell parameters acidification, respiration and morphology are continuously monitored in parallel. Ammonia was used as a highly water-soluble model gas to test the feasibility of the sensor system. Infrared measurements confirmed the sufficiency of the medium draining method. This sensor system provides a basis for many sensor applications such as environmental monitoring, building technology and public security.},
  language  = {en}
}
@article{WernerGroebelKrumbeetal.2012,
  author    = {Werner, Frederik and Groebel, Simone and Krumbe, Christoph and Wagner, Torsten and Selmer, Thorsten and Yoshinobu, Tatsuo and Baumann, Marcus and Sch{\"o}ning, Michael Josef},
  title     = {Nutrient concentration-sensitive microorganism-based biosensor},
  series = {Physica Status Solidi (a)},
  volume    = {209},
  journal   = {Physica Status Solidi (a)},
  number    = {5},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1862-6319},
  doi       = {10.1002/pssa.201100801},
  pages     = {900 -- 904},
  year      = {2012},
  language  = {en}
}
@article{KirchnerReisertPuetzetal.2012,
  author    = {Kirchner, Patrick and Reisert, Steffen and P{\"u}tz, Patrick and Keusgen, Michael and Sch{\"o}ning, Michael Josef},
  title     = {Characterisation of polymeric materials as passivation layer for calorimetric H2O2 gas sensors},
  series = {Physica Status Solidi (a)},
  volume    = {209},
  journal   = {Physica Status Solidi (a)},
  number    = {5},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1862-6319},
  doi       = {10.1002/pssa.201100773},
  pages     = {859 -- 863},
  year      = {2012},
  abstract  = {Calorimetric gas sensors for monitoring the H₂O₂ concentration at elevated temperatures in industrial sterilisation processes have been presented in previous works. These sensors are built up in form of a differential set-up of a catalytically active and passive temperature-sensitive structure. Although, various types of catalytically active dispersions have been studied, the passivation layer has to be established and therefore, chemically as well as physically characterised. In the present work, fluorinated ethylene propylene (FEP), perfluoralkoxy (PFA) and epoxy-based SU-8 photoresist as temperature-stable polymeric materials have been investigated for sensor passivation in terms of their chemical inertness against H₂O₂, their hygroscopic properties as well as their morphology. The polymeric materials were deposited via spin-coating on the temperature-sensitive structure, wherein spin-coated FEP and PFA show slight agglomerates. However, they possess a low absorption of humidity due to their hydrophobic surface, whereas the SU-8 layer has a closed surface but shows a slightly higher absorption of water. All of them were inert against gaseous H₂O₂ during the characterisation in H₂O₂ atmosphere that demonstrates their suitability as passivation layer for calorimetric H₂O₂ gas sensors.},
  language  = {en}
}
@article{Huening2012,
  author    = {H{\"u}ning, Felix},
  title     = {Using Trench PowerMOSFETs in Linear Mode},
  series = {Power Electronics Europe (2012)},
  journal   = {Power Electronics Europe (2012)},
  publisher = {DFA Media},
  address   = {Tonbridge},
  issn      = {1748-3530},
  pages     = {27 -- 29},
  year      = {2012},
  abstract  = {If we think about applications for modern Power MOSFETs using trench technology, running them in linear mode may not be top of the priority list. Yet there are multiple uses for Trench Power MOSFETs in linear mode. In fact, even turning the device on and off in switching applications is a form of linear operation. Also, these components can be run in linear mode to protect the device against voltage surges. This article will illustrate the factors that need to be considered for linear operation and show how Trench Power MOSFETs are suited to it.},
  language  = {en}
}
@article{ReisgenSchleserMokrovetal.2012,
  author    = {Reisgen, Uwe and Schleser, Markus and Mokrov, Oleg and Ahmed, Essam},
  title     = {Statistical modeling of laser welding of DP/TRIP steel sheets},
  series = {Optics and laser technology},
  volume    = {44},
  journal   = {Optics and laser technology},
  number    = {1},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1879-2545 (E-Journal); 0030-3992 (Print); 0308-4280 (Print)},
  doi       = {10.1016/j.optlastec.2011.05.025},
  pages     = {92 -- 101},
  year      = {2012},
  abstract  = {In this research work, a statistical analysis of the CO2 laser beam welding of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets was done using response surface methodology. The analysis considered the effect of laser power (2-2.2 kW), welding speed (40-50 mm/s) and focus position (-1 to 0 mm) on the heat input, the weld bead geometry, uniaxial tensile strength, formability limited dome height and welding operation cost. The experimental design was based on Box-Behnken design using linear and quadratic polynomial equations for predicting the mathematical models. The results indicate that the proposed models predict the responses adequately within the limits of welding parameters being used and the welding speed is the most significant parameter during the welding process.},
  language  = {en}
}
@article{ReisgenSchleserMokrovetal.2012,
  author    = {Reisgen, Uwe and Schleser, Markus and Mokrov, Oleg and Ahmed, Essam},
  title     = {Optimization of laser welding of DP/TRIP steel sheets using statistical approach},
  series = {Optics and laser technology},
  volume    = {44},
  journal   = {Optics and laser technology},
  number    = {1},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1879-2545 (E-Journal); 0030-3992 (Print); 0308-4280 (Print)},
  doi       = {10.1016/j.optlastec.2011.06.028},
  pages     = {255 -- 262},
  year      = {2012},
  abstract  = {Generally, the quality of a weld joint is directly influenced by the welding input parameter settings. Selection of proper process parameters is important to obtain the desired weld bead profile and quality. In this research work, numerical and graphical optimization techniques of the CO2 laser beam welding of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets were carried out using response surface methodology (RSM) based on Box-Behnken design. The procedure was established to improve the weld quality, increase the productivity and minimize the total operation cost by considering the welding parameters range of laser power (2-2.2 kW), welding speed (40-50 mm/s) and focus position (-1 to 0 mm). It was found that, RSM can be considered as a powerful tool in experimental welding optimization, even when the experimenter does not have a model for the process. Strong, efficient and low cost weld joints could be achieved using the optimum welding conditions.},
  language  = {en}
}
@article{ReisgenOlschokJakobsetal.2012,
  author    = {Reisgen, Uwe and Olschok, Simon and Jakobs, Stefan and Schleser, Markus and Mokrov, Oleg and Rossiter, Eduardo},
  title     = {Laser beam submerged arc hybrid welding},
  series = {Physics procedia},
  volume    = {39},
  journal   = {Physics procedia},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1875-3892},
  doi       = {10.1016/j.phpro.2012.10.016},
  pages     = {75 -- 83},
  year      = {2012},
  abstract  = {The laser beam-submerged arc hybrid welding method originates from the knowledge that, with increasing penetration depth, the laser beam process has a tendency to pore formation in the lower weld regions. The coupling with the energy-efficient submerged-arc process improves degassing and reduces the tendency to pore formation. The high deposition rate of the SA process in combination with the laser beam process offers, providing the appropriate choice of weld preparation, the possibility of welding plates with a thickness larger than 20° mm in a single pass, and also of welding thicker plates with the double-sided single pass technique.},
  language  = {en}
}