Refine
Year of publication
- 2012 (314) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (70)
- Fachbereich Wirtschaftswissenschaften (42)
- Fachbereich Chemie und Biotechnologie (39)
- Fachbereich Elektrotechnik und Informationstechnik (37)
- Fachbereich Bauingenieurwesen (30)
- INB - Institut für Nano- und Biotechnologien (30)
- IfB - Institut für Bioengineering (29)
- Fachbereich Maschinenbau und Mechatronik (27)
- Fachbereich Energietechnik (20)
- Solar-Institut Jülich (15)
Has Fulltext
- no (314) (remove)
Document Type
- Article (129)
- Conference Proceeding (81)
- Part of a Book (36)
- Book (26)
- Conference: Meeting Abstract (17)
- Patent (12)
- Doctoral Thesis (7)
- Report (3)
- Habilitation (1)
- Other (1)
Keywords
- (Bio)degradation (1)
- 3. EU Legislativpaket (1)
- 802.15.4 (1)
- Acceleration (1)
- Adsorption (1)
- Afterload (1)
- Alginate beads (1)
- Anastomotic leakage (1)
- Autolysis (1)
- Avalanche (1)
- Bank-issued Warrants (1)
- Bluetooth (1)
- Borehole heat exchanger (1)
- Calorimetric gas sensor (1)
- Cell permeability (1)
- CellDrum (1)
- Cellular force (1)
- Central receiver system (1)
- Chemical imaging sensor (1)
- Circular Dichroism (1)
- Cloud Computing (1)
- Cloud Service Broker (1)
- Compliance (1)
- Concentrated solar collector (1)
- Consensus (1)
- Contractile tension (1)
- Contractility (1)
- C–V method (1)
- Decomposition (1)
- Detergent protease (1)
- Discourse ethics (1)
- Disposition Effect (1)
- Distributed Control Systems, (1)
- Elemental (1)
- End-to-end colorectal anastomosis (1)
- Endothelial cells (1)
- Energiewirtschaft (1)
- Esophageal Doppler monitor (1)
- Extracellular enzymes (1)
- Field-effect sensor (1)
- Finite differences (1)
- Finite element modelling (1)
- Force (1)
- Freeze–thaw process (1)
- Fresnel collector (1)
- Grid Computing (1)
- Guerrillawerbung (1)
- Heat transport (1)
- Hydrogen peroxide (1)
- Hypersecretion (1)
- IP-based networks (1)
- Impedance spectroscopy (1)
- Individual Investors (1)
- Industrial Automation Technology, (1)
- Kinetic energy (1)
- Konsumgesellschaft (1)
- Künstlerisches Handeln (1)
- LAPS (1)
- Light-addressable potentiometric sensor (1)
- Lipopolysaccharide (1)
- Liver (1)
- Low-field NMR (1)
- MATLAB , MLPI , Motion control , Open Core , industrial drives , rapid control prototypin , sercos automation bus (1)
- Marker-free mutagenesis (1)
- Medienforschung (1)
- Molkeproteine (1)
- NGN (1)
- NMR exchange relaxometry (1)
- NONOate (1)
- Negative Feedback Trading (1)
- Nitric Oxide (1)
- Nitric Oxide Donor (1)
- Numerical linear algebra (1)
- Optical and thermal analysis (1)
- Organic light-emitting diode display (1)
- Ownership Unbundling (1)
- PIV (1)
- PROFINET (1)
- Parasitäre Strategie (1)
- Politische Kunst (1)
- Poly(d,l-lacticacid) (1)
- Polyimide (1)
- Real-time monitoring (1)
- Recombinant activated protein C (1)
- Requirements prioritization (1)
- Requirements relations (1)
- SLM (1)
- ScaLAPACK (1)
- Selektives Laser Schmelzen (1)
- Silber (1)
- Snow (1)
- Solar concentration (1)
- Spleen (1)
- Stenotrophomonas maltophilia (1)
- Sterilisation process (1)
- Stromnetz (1)
- Surgical staplers (1)
- Tool support (1)
- Trading Behavior (1)
- Uracil-phosphoribosyltransferase (1)
- VOF (1)
- Variable height stapler design (1)
- Velocity (1)
- Volume status (1)
- Wireless Networks (1)
- Workflow (1)
- Workflow Orchestration (1)
- architectural design process (1)
- brachytherapy (1)
- dam-break (1)
- design theory (1)
- drag force (1)
- eigensolvers (1)
- incontinence (1)
- instruments (1)
- interdisciplinarity (1)
- methodologies (1)
- next generation network (1)
- numerical model (1)
- performance analysis (1)
- physical model (1)
- product bundling (1)
- prostate cancer (1)
- prostatectomy (1)
- quality of life (1)
- telecommunication (1)
- Übertragungsnetz (1)
Concentrating solar power
(2012)
Real-time and reliable monitoring of the biogas process is crucial for a stable and efficient operation of biogas production in order to avoid digester breakdowns. The concentration of dissolved hydrogen (H₂) represents one of the key parameters for biogas process control. In this work, a one-chip integrated combined amperometric/field-effect sensor for monitoring the dissolved H₂ concentration has been developed for biogas applications. The combination of two different transducer principles might allow a more accurate and reliable measurement of dissolved H₂ as an early warning indicator of digester failures. The feasibility of the approach has been demonstrated by simultaneous amperometric/field-effect measurements of dissolved H₂ concentrations in electrolyte solutions. Both, the amperometric and the field-effect transducer show a linear response behaviour in the H₂ concentration range from 0.1 to 3% (v/v) with a slope of 198.4 ± 13.7 nA/% (v/v) and 14.9 ± 0.5 mV/% (v/v), respectively.
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.
In vitro studies of the degradation kinetic of biopolymers are essential for the design and optimization of implantable biomedical devices. In the presented work, a field-effect capacitive sensor has been applied for the real-time and in situ monitoring of degradation processes of biopolymers for the first time. The polymer-covered field-effect sensor is, in principle, capable to detect any changes in bulk, surface and interface properties of the polymer induced by degradation processes. The feasibility of this approach has been experimentally proven by using the commercially available biomedical polymer poly(D,L-lactic acid) (PDLLA) as a model system. PDLLA films of different thicknesses were deposited on the Ta₂O₅-gate surface of the field-effect structure from a polymer solution by means of spin-coating method. The polymer-modified field-effect sensors have been characterized by means of capacitance–voltage and impedance-spectroscopy method. The degradation of the PDLLA was accelerated by changing the degradation medium from neutral (pH 7.2) to alkaline (pH 9) condition, resulting in drastic changes in the capacitance and impedance spectra of the polymer-modified field-effect sensor.
Characterisation of polymeric materials as passivation layer for calorimetric H2O2 gas sensors
(2012)
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.