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18 Ergebnisse
Bereich: Suchergebnisse
Publikation Backtrainer. Computer-aided therapy system with augmented feedback for the lower back(SciTePress, 2009) Brodbeck, Dominique; Degen, Markus; Stanimirov, Michael; Kool, Jan; Scheermesser, Mandy; Oesch, Peter; Neuhaus, Cornelia; Azevedo, Luis; Londral, AnaLow back pain is an important problem in industrialized countries. Two key factors limit the effectiveness of physiotherapy: low compliance of patients with repetitive movement exercises, and inadequate awareness of patients of their own posture. The Backtrainer system addresses these problems by real-time monitoring of the spine position, by providing a framework for most common physiotherapy exercises for the low back, and by providing feedback to patients in a motivating way. A minimal sensor configuration was identified as two inertial sensors that measure the orientation of the lower back at two points with three degrees of freedom. The software was designed as a flexible platform to experiment with different hardware, and with various feedback modalities. Basic exercises for two types of movements are provided: mobilizing and stabilizing. We developed visual feedback - abstract as well as in the form of a virtual reality game - and complemented the on-screen graphics with an ambient feedback device. The system was evaluated during five weeks in a rehabilitation clinic with 26 patients and 15 physiotherapists. Subjective satisfaction of subjects was good, and we interpret the results as encouraging indication for the adoption of such a therapy support system by both patients and therapists.04B - Beitrag KonferenzschriftPublikation Modified oligonucleotides(World Intellectual Property Organization, 08.01.1998) De Mesmaeker, Alain; Wendeborn, Sebastian; Lebreton, JaquesIt is one object of the present invention to provide an oligonucleotide of formula (1): 5'-(U)n-3' in which U is an identical or different radical of a natural or a synthetic nucleoside, wherein the oligonucleotide comprises at least one modified nucleotide dimer comprising two nucleoside analogs connected via an amide-bond that has a certain configuration; the synthesis of these compounds and their use in pharmaceutical preparations.12 - PatentPublikation Molecular assembly and self‐assembly: molecular nanoscience for future technologies(2003) de Wild, Michael; Berner, Simon; Suzuki, Hitoshi; Ramoino, Luca; Baratoff, Alexis; Jung, Thomas A.In this review the emerging science of single molecules is discussed in the perspective of nanoscale molecular functions and devices. New methods for the controlled assembly of well-defined molecular nanostructures are pre- sented: self assembly and single molecular positioning. The observation and selective modification of conformation, electronics, and molecular mechanics of individual molecules and molecular assemblies by scanning probes is dem- onstrated. To complement this scientific review, some of the possible conse- quences and visions for future developments are discussed, as far as they derive from the presented systems. The prospects of nanoscale science to stim- ulate technological evolution are exemplified.01A - Beitrag in wissenschaftlicher ZeitschriftPublikation Hematocrit measurement - a high precision on-line measurement system based on impedance spectroscopy for use in hemodialysis machines(2009) Trebbels, Dennis; Zengerle, Roland; Hradetzky, DavidThis paper presents a unique technical approach to measure the proportion of blood volume occupied by red blood cells, the hematocrit value (HCT) on-line and in-line. A practical method has been developed to measure without the need for extracting blood samples out of an existing extracorporeal blood circulation system. The new sensor is based on Impedance Spectroscopy and measures electrical properties of the blood at various frequencies. In order to achieve the required precision resolution the sensor geometry has been optimized by Finite Element Analysis. For sensor readout a digital measurement circuitry based on cheap standard components is developed and allows practical implementation of HCT-sensor devices for the first time. Special care has been taken in order to compensate for the temperature effects.04B - Beitrag KonferenzschriftPublikation Interferometric label-free biomolecular detection system(IOP Publishing Ltd, 2006) Hradetzky, David; Mueller, Claas; Reinecke, HolgerThis work presents a simple evanescent wave sensing system based on an interferometric approach, suitable to meet the requirements of label-free sensor systems for detecting biomolecular interactions. It represents a basic concept towards label-free detection systems in various applications. The basic objectives of transducers for evanescent wave sensing are discussed. An optical detection system based on a interferometric approach using Young's double slit configuration is discussed, set-up and characterized. With refractometric measurements of various sucrose dilutions, the performance of the pure optical set-up is evaluated.01A - Beitrag in wissenschaftlicher ZeitschriftPublikation Interferometric sensor platform for biomolecular interaction analysis(VDE, 2005) Hradetzky, David; Müller, Claas; Reinecke, Holger04B - Beitrag KonferenzschriftPublikation Interferometrisches Biosensor System(2001) Wikerstål, Andreas; Brandenburg, Albrecht; Hradetzky, David; Krauter, Ralf; Künzel, Christa; Schulte, Heinrich; Stefan, Monika04B - Beitrag KonferenzschriftPublikation Label free detection of biomolecular interactions(IEEE, 2005) Hradetzky, David; Müller, Claas; Reinecke, HolgerThis work presents a simple evanescent wave sensing system based on an interferometric approach suitable to meet the demands on label free sensor systems for the detection of biomolecular interactions especially. It is representing a basic concept towards high throughput application. The system performance and reproducibility was evaluated with refractometric measurements of sucrose dilutions. A mean resolution of the effective refractive index of 3sigma(Deltamacrnmacr eff )=0.9middot10 -6 without averaging and a reproducibility below sigma r =0.1middot10 -6 were achieved. The suitability for the detection of biomolecular interactions was validated with the detection of a DNA hybridization04B - Beitrag KonferenzschriftPublikation Eye-Cam: Sprachgesteuerte Miniaturkamera integriert in einer Brille(2007) Hradetzky, David; Kliche, Kurt; Ehrbrecht, Bernd; Anka, Laszlo; Wölfle, Matthias; Zengerle, Roland04B - Beitrag KonferenzschriftPublikation Miniaturisierte Sensorplattform zur markierungsfreien Detektion biomolekularer Interaktionen(Cuvillier Verlag, 2005) Hradetzky, David02 - Monographie