Refine
Year of publication
- 2012 (333) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (72)
- Fachbereich Wirtschaftswissenschaften (42)
- Fachbereich Elektrotechnik und Informationstechnik (41)
- Fachbereich Chemie und Biotechnologie (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)
Stahlbau
(2012)
Stahlbau
(2012)
Die bauaufsichtliche Einführung der Eurocodes steht unmittelbar bevor. Für den Bereich des Stahl- und Spannbetonbaus soll die Anwendung zum 1. Juli 2012 verbindlich sein, d. h. mit diesem Stichtag sollte nur noch der Eurocode 2 (DIN EN 1992-1-1, Ausgabe Januar 2011) mit seinem zugehörigen nationalen Anhang (DIN EN 1992-1-1/NA, Ausgabe Januar 2011) Verwendung finden, die DIN 1045-1 wird zurückgezogen. Bereits seit März 2010 gilt eine Übergangsphase, ist der die Anwendung des Eurocodes alternativ zur DIN 1045-1 als bauaufsichtlich gleichwertige Lösung möglich.
Stahlbetonbau
(2012)
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.
The construction of a statistical test is investigated which is based only on “reliability” and “precision” as quality criteria. The reliability of a statistical test is quantifiedin a straightforward way by the probability that the decision of the test is correct. However, the quantification of the precision of a statistical test is not at all evident. Thereforethe paper presents and discusses several approaches. Moreover the distinction of “nullhypothesis” and “alternative hypothesis” is not necessary any longer.
Die Hochgradientenmagnetseparation (HGMS) ist eine Methode zur Aufreinigung von biopharmazeutischen Produkten. Mit dieser Methode lässt sich in nur einem Schritt eine Fest/Fest/Flüssig-Trennung erzielen, was zu einer erheblichen Zeit- und Kostenersparnis im Downstreaming führt. Dennoch steht ihr industrieller Einsatz noch aus, was u. a. am Mangel an Analysenmethoden liegt, um die HGMS quantifizierbar zu machen. Gerade in der Pharmaproduktion werden Prozesse gebraucht, die gemäß den einschlägigen Vorschriften (cGMP) validiert und deren verfahrenstechnische Anlagenteile qualifiziert werden können. Die Schwierigkeit ist die Messung der magnetischen Mikrosorbentien in der Suspension, in der auch Zellen oder Zelltrümmer vorliegen. Im Rahmen eines Forschungsprojektes im „Zentralen Innovationsprogramm Mittelstand“ des BMWi wurden verschiedene Analysenmethoden untersucht. Die Durchflusszytometrie ermöglicht eine Charakterisierung von Partikeln und eine simultane quantitative Messung. Durch die multiparametrige Messung kann zwischen Zellen, Zelltrümmern und Magnetpartikeln unterschieden werden. Die At-line-Einbindung des Durchflusszytometers ist durch den Einsatz einer externen Pumpe möglich. Über eine automatisierte Messwertanalyse kann der HGMS-Prozess mittels der Durchflusszytometrie gesteuert werden.
Biodiversity and the coexistence of species have puzzled and fascinated biologists since decades and is a hotspot in todays’ natural sciences. Preserving this biodiversity is a great challenge as habitats and environments underlying tremendous changes like climate change and the loss of natural habitats, which are mainly due to anthropogenic influences. The coexistence of numerous species even in homogeneous environments is a stunning feature of natural communities and has been summarized under the term ‘paradox of plankton’. Up to now, there are several mechanisms discussed, which may contribute to local and global diversity of organisms. Several interspecific trade offs have been identified maintaining the coexistence of species like their abilities regarding competition and predator avoidance, their capability to disperse in space and time, and their ability to exploit variable resources. Further, micro-evolutionary dynamics supporting the coexistence of species have been added to our knowledge, and deriving from theoretical deterministic models, non-linear dynamics which describe the temporal fluctuation of abundances of organisms. Whereas competition and predation seem to be clue structural elements within interacting organisms, the intrinsic dynamic behavior – by means of temporal changes in abundance - plays an important role regarding coexistence within a community. The present work sheds light on different factors affecting the coexistence of species using experimental microbial model systems consisting of a bacterivorous ciliate as the predator and two bacteria strains as prey organism. Additionally, another experimental setup consisting of two up to five bacteria species competing for one limiting resource was investigated. Highly controllable chemostat systems were established to exclude extrinsic disturbances. According to theoretical analyses I was able to show - experimentally and theoretically - that phenotypic plasticity of one species within a microbial one-predator-two-prey food web enlarges the range of possible coexistence of all species under different dynamic conditions, compared to a food web without phenotypic plasticity. This was accompanied by non-linear (chaotic) population dynamics within all experimental systems showing phenotypic plasticity. The experiments on the interplay of competition, predation and invasion showed that all aspects have an influence on species coexistence. Under undisturbed controlled conditions all aspects were analyzed in detail and in combination. Populations showed oscillations which were shown by quasi-chaotic attractors in phase space diagrams. Competition experiments with two up to five bacteria species competing for one limiting resource showed that all organisms were able to coexist which was mediated by species oscillations entering a regime of chaos. Besides that fact it was found, that the productivity (biomass) as well as the total cell numbers – under the same nutrition supply – increased by an increasing number of species in the experimental systems. Up to now, the occurrence of non-linear dynamics in well controlled experimental studies has been recognized several times and this phenomenon seemed to be more common in natural systems than generally assumed.