Refine
Year of publication
- 2012 (333) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (72)
- Fachbereich Wirtschaftswissenschaften (42)
- Fachbereich Chemie und Biotechnologie (40)
- Fachbereich Elektrotechnik und Informationstechnik (40)
- INB - Institut für Nano- und Biotechnologien (32)
- IfB - Institut für Bioengineering (31)
- Fachbereich Bauingenieurwesen (30)
- Fachbereich Maschinenbau und Mechatronik (29)
- Fachbereich Energietechnik (20)
- Solar-Institut Jülich (15)
Document Type
- Article (130)
- Conference Proceeding (89)
- Part of a Book (36)
- Book (26)
- Conference: Meeting Abstract (17)
- Patent (12)
- Part of a Periodical (9)
- Doctoral Thesis (7)
- Report (4)
- Habilitation (1)
Keywords
- Elektromobilität (7)
- Elektrofahrzeug (5)
- Energieversorgungsnetz (5)
- Kraftfahrzeugelektronik (5)
- Aachen / Fachhochschule Aachen (3)
- Aachen University of Applied Sciences (2)
- Elektromobilität; Elektrofahrzeug; Energieversorungsnetz; Kraftfahrzeugtechnik (2)
- (Bio)degradation (1)
- 3. EU Legislativpaket (1)
- 802.15.4 (1)
- Acceleration (1)
- Adsorption (1)
- Afterload (1)
- Alginate beads (1)
- Anastomotic leakage (1)
- Aufschlagversuch (1)
- Autolysis (1)
- Avalanche (1)
- Bank-issued Warrants (1)
- Bio-Sensors (1)
- Biosensor (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)
- Eisschicht (1)
- Elemental (1)
- End-to-end colorectal anastomosis (1)
- Endothelial cells (1)
- Energiewirtschaft (1)
- Esophageal Doppler monitor (1)
- Extracellular enzymes (1)
- FH Aachen (1)
- Fachhochschule Aachen (1)
- Field-effect sensor (1)
- Finite differences (1)
- Finite element modelling (1)
- Force (1)
- Forschungsbericht (1)
- Freeze–thaw process (1)
- Fresnel collector (1)
- Fußball (1)
- Gleichspannungswandler (1)
- Graduiertentagung (1)
- Grid Computing (1)
- Guerrillawerbung (1)
- Heat transport (1)
- Hydrogen peroxide (1)
- Hypersecretion (1)
- IP-based networks (1)
- Impedance spectroscopy (1)
- Individual Investors (1)
- IndraMotion (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)
- Motion-Logic System (1)
- NGN (1)
- NMR exchange relaxometry (1)
- NONOate (1)
- Nano Materials (1)
- Nanomaterial (1)
- Nanotechnologie (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)
- Research Report (1)
- Robotik (1)
- SLM (1)
- SPS (1)
- ScaLAPACK (1)
- Schienbeinschoner (1)
- Selektives Laser Schmelzen (1)
- Silber (1)
- Snow (1)
- Solar concentration (1)
- Sonde (1)
- Speicherprogrammierte Steuerung (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)
- Wärmeübertragung (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)
- mobile robots (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)
- subglacial aquatic ecosystems (1)
- subsurface ice (1)
- telecommunication (1)
- Übertragungsnetz (1)
Technisches Zeichnen : Lösungsvorschläge für das Selbststudium. (Berichte aus dem Maschinenbau)
(2012)
Sensitivity of phase detection techniques in aerated chute flows to hydraulic design parameters
(2012)
Selective laser melting of metals: desktop machines open up new chances even for small companies
(2012)
Additive manufacturing (AM) of metal parts by using Selective Laser Melting (SLM) has become a powerful tool mostly in the area of automotive, aerospace engineering and others. Especially in the field of dentistry, jewelry and related branches that require individualized or even one-of-a-kind products, the direct digital manufacturing process opens up new ways of design and manufacturing. In these fields, mostly small and medium sized businesses (SME) are operating which do not have sufficient human and economic resources to invest in this technology. But to stay competitive, the application of AM can be regarded as a necessity. In this situation a new desktop machine (Realizer SLM 50) was introduced that cost about 1/3 of a shop floor SLM machine and promises small quality parts. To find out whether the machine really is an alternative for SMEs the University of Applied Science, Aachen, Germany, designed, build and optimized typical parts from the dentistry and the jewelry branches using CoCr and silver material, the latter being new with this application. The paper describes the SLM procedure and how to find and optimize the most important parameters. The test is accompanied by digital simulation in order to verify the build parameters and to plan future builds. The procedure is shown as well as the resulting parts made from CoCr and silver material.
Since several decades, dam-break waves have been of main research interest. Mathematical approaches have been developed by analytical, physical and numerical models within the past 120 years. During the past 10 years, the number of research investigations has increased due to improved measurement techniques as well as significantly increased computer memories and performances. In this context, the present research deals with the initial stage of two-dimensional dam-break waves by comparing physical and numerical model results as well as analytical approaches. High-speed images and resulting particle image velocimetry calculations are thereby compared with the numerical volume-of-fluid (VOF) method, included in the commercial code FLOW-3D. Wave profiles and drag forces on placed obstacles are analysed in detail. Generally, a good agreement between the laboratory and VOF results is found.
In this study we observed courses of micturition symptoms and differentiated degrees of symptoms for each point in time while also considering the impact of bothersomeness. Our data show that not only significantly more patients who have undergone BT suffer from OAB than those who have undergone RP, but also that those affected show significantly higher values for severity of OAB symptoms throughout the whole observation period of 36 months. Our data analysis further shows that variability of OAB symptoms as well as fluctuation of severity of OAB symptoms vary to a significantly higher degree after BT than after RP. Looking only at mean figures at a given point in time clearly underestimates the underlying problem. This fact is not reflected in the literature.
Disruption experiments targeted at the Bacillus licheniformis degSU operon and GFP-reporter analysis provided evidence for promoter activity immediately upstream of degU. pMutin mediated concomitant introduction of the degU32 allele – known to cause hypersecretion in Bacillus subtilis – resulted in a marked increase in protease activity. Application of 5-fluorouracil based counterselection through establishment of a phosphoribosyltransferase deficient Δupp strain eventually facilitated the marker-free introduction of degU32 leading to further protease enhancement achieving levels as for hypersecreting wild strains in which degU was overexpressed. Surprisingly, deletion of rapG – known to interfere with DegU DNA-binding in B. subtilis – did not enhance protease production neither in the wild type nor in the degU32 strain. The combination of degU32 and Δupp counterselection in the type strain is not only equally effective as in hypersecreting wild strains with respect to protease production but furthermore facilitates genetic strain improvement aiming at biological containment and effectiveness of biotechnological processes.
Zuverlässigkeitsanalyse zur Verifikation der Einhaltung von quantitativen Sicherheitsanforderungen.
(2012)
Im Rahmen des Exzellenzclusters „Integrative Produktionstechnik für Hochlohnländer“ der RWTHAachen University werden derzeit alternative Verfahren zur Herstellung von Metall/Kunststoff- Verbindungen untersucht. Eines davon ist das thermische Direktfügen, das eine stoffschlüssige Verbindung zwischen Kunststoff und Metall ermöglicht und ohne die Verwendung von Klebstoffen, Haftvermittlern oder mechanischen Verbindungshilfen auskommt.
Electron beam plasma measurement was realised by means of DIABEAM system invented by ISF RWTH Aachen. The Langmuir probe method is used for measurement. The relative simplicity of the method and the possibility of dispersion of high power on the probe allow its application for the investigation of high-power electron beams. The key element of the method is a rotating thin tungsten wire, which intersects the beam transversely on its axis and collects part of the current by itself. The signals, which are registered in the DIABEAM as a voltage, were taken in the form of amplitude. The conversion of the probe current into the distribution along the beam radius was realised using the Abel’s method. A voltage-current characteristic was built for the beam current. The local electron density as well as the electron temperature, the floating potential and the plasma potential were measured and calculated by means of this characteristic.
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.
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.
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.
Concentrating solar power
(2012)
Solar thermal concentrated power is an emerging technology that provides clean electricity for the growing energy market. To the solar thermal concentrated power plant systems belong the parabolic trough, the Fresnel collector, the solar dish, and the central receiver system.
For high-concentration solar collector systems, optical and thermal analysis is essential. There exist a number of measurement techniques and systems for the optical and thermal characterization of the efficiency of solar thermal concentrated systems.
For each system, structure, components, and specific characteristics types are described. The chapter presents additionally an outline for the calculation of system performance and operation and maintenance topics. One main focus is set to the models of components and their construction details as well as different types on the market. In the later part of this chapter, different criteria for the choice of technology are analyzed in detail.