Refine
Year of publication
- 2017 (155) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (61)
- IfB - Institut für Bioengineering (32)
- INB - Institut für Nano- und Biotechnologien (26)
- Fachbereich Elektrotechnik und Informationstechnik (25)
- Fachbereich Luft- und Raumfahrttechnik (22)
- Fachbereich Energietechnik (14)
- Fachbereich Chemie und Biotechnologie (12)
- Fachbereich Maschinenbau und Mechatronik (10)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (10)
- Fachbereich Bauingenieurwesen (7)
Language
- English (155) (remove)
Document Type
- Article (72)
- Conference Proceeding (67)
- Part of a Book (12)
- Other (2)
- Book (1)
- Patent (1)
Keywords
- MASCOT (2)
- 3D nonlinear finite element model (1)
- Acceptance tests (1)
- Automated Optimization (1)
- Autonomous mobile robots (1)
- Biomolecular logic gate (1)
- CNOT (1)
- Capacitive field-effect (1)
- Chemical images (1)
- Chemical sensor (1)
- Chimeric liver-humanized mice (1)
- Competence Developing Games (1)
- DNA (1)
- Dehydrogenase (1)
- Diaphorase (1)
- Diversity (1)
- Diversity Management (1)
- Drug distribution (1)
- Drug metabolism (1)
- Dry-low-NOx (DLN) combustion (1)
- EIS capacitive sensor (1)
- Effective modal mass (1)
- Electrolyte–insulator–semiconductor (1)
- Enterprise architecture (1)
- Enterprise transformation (1)
- Enzymatic biosensor (1)
- Enzyme biosensor (1)
- Enzyme logic gate (1)
- Field-effect sensor (1)
- GOSSAMER-1 (1)
- Gamification (1)
- Gold nanoparticle (1)
- Gossamer (1)
- High hydrogen combustion (1)
- Higher education (1)
- Hotelling’s T² test (1)
- Hydrogen combustion (1)
- Hydrogen gas turbine (1)
- Image Database (1)
- Image Forensics (1)
- Industry 4.0 (1)
- Innovation (1)
- Innovation Management (1)
- Knockout mice (1)
- LAPS (1)
- Leadership (1)
- Light-addressable potentiometric sensor (1)
- Map (eTOM) Process reference model Process design Telecommunications industry (1)
- Micromix combustion (1)
- Mixed-Methods Research (1)
- Mobile Phones (1)
- Multi-robot systems (1)
- Multiphase (1)
- Natural frequency (1)
- Negative impedance convertor (1)
- O2 plasma (1)
- Optimal Topology (1)
- PHILAE (1)
- Performance measurement (1)
- Piecewise Linearization (1)
- Plant efficiency (1)
- Process design (1)
- Process reference model (1)
- Quantitative research (1)
- Reference modelling (1)
- Resonance-mode measurement (1)
- RoboCup (1)
- Sequence-Search (1)
- Serious Games (1)
- Similarity Theory (1)
- Simultaneous determination (1)
- Small Solar System Body Lander (1)
- Small Spacecraft (1)
- Smart factory (1)
- Solar Power Sail (1)
- Students (1)
- Suspension bridge (1)
- TM Forum (1)
- Telecommunication (1)
- Thin shell finite elements (1)
- Toxicology (1)
- Trajectory Optimization (1)
- Transition (1)
- Ventilation System (1)
- XOR (1)
- annealing (1)
- asteroid sample return (1)
- change management (1)
- churches (1)
- collaboration of architects and structural engineers (1)
- complete block symmetry (1)
- diversity management (1)
- earthquake engineering (1)
- education (1)
- elastomeric bearing (1)
- electrolyte-insulator semiconductor sensor (EIS) (1)
- engineering (1)
- enhanced Telecom Operations Map (eTOM) (1)
- equivalent stiffness (1)
- friction pendulum bearing (1)
- granular silo (1)
- hydroxylation (1)
- hypoplasticity (1)
- innovation management (1)
- interdisciplinary student projects (1)
- learning theories (1)
- likelihood ratio test (1)
- liquid storage tank (1)
- macro-element (1)
- motivation theories (1)
- multiple NEA rendezvous (1)
- nonlinear transient analyses (1)
- perception of structures (1)
- research association (1)
- seismic isolation (1)
- simplified approach (1)
- solar sail (1)
- structural systems (1)
- surface functionalization (1)
- teaching of structures (1)
- truss (1)
- uniformly most powerful invariant test (1)
- vault (1)
Is part of the Bibliography
- no (155)
Gearboxes are mechanical transmission systems that provide speed and torque conversions from a rotating power source. Being a central element of the drive train, they are relevant for the efficiency and durability of motor vehicles. In this work, we present a new approach for gearbox design: Modeling the design problem as a mixed-integer nonlinear program (MINLP) allows us to create gearbox designs from scratch for arbitrary requirements and—given enough time—to compute provably globally optimal designs for a given objective. We show how different degrees of freedom influence the runtime and present an exemplary solution.
In times of planned obsolescence the demand for sustainability keeps growing. Ideally, a technical system is highly reliable, without failures and down times due to fast wear of single components. At the same time, maintenance should preferably be limited to pre-defined time intervals. Dispersion of load between multiple components can increase a system’s reliability and thus its availability inbetween maintenance points. However, this also results in higher investment costs and additional efforts due to higher complexity. Given a specific load profile and resulting wear of components, it is often unclear which system structure is the optimal one. Technical Operations Research (TOR) finds an optimal structure balancing availability and effort. We present our approach by designing a hydrostatic transmission system.
Energy-efficient components do not automatically lead to energy-efficient systems. Technical Operations Research (TOR) shifts the focus from the single component to the system as a whole and finds its optimal topology and operating strategy simultaneously. In previous works, we provided a preselected construction kit of suitable components for the algorithm. This approach may give rise to a combinatorial explosion if the preselection cannot be cut down to a reasonable number by human intuition. To reduce the number of discrete decisions, we integrate laws derived from similarity theory into the optimization model. Since the physical characteristics of a production series are similar, it can be described by affinity and scaling laws. Making use of these laws, our construction kit can be modeled more efficiently: Instead of a preselection of components, it now encompasses whole model ranges. This allows us to significantly increase the number of possible set-ups in our model. In this paper, we present how to embed this new formulation into a mixed-integer program and assess the run time via benchmarks. We present our approach on the example of a ventilation system design problem.
Prior to immobilization of biomolecules or cells onto biosensor surfaces, the surface must be physically or chemically activated for further functionalization. Organosilanes are a versatile option as they facilitate the immobilization through their terminal groups and also display self-assembly. Incorporating hydroxyl groups is one of the important methods for primary immobilization. This can be done, for example, with oxygen plasma treatment. However, this treatment can affect the performance of the biosensors and this effect is not quite well understood for surface functionalization. In this work, the effect of O2 plasma treatment on EIS sensors was investigated by means of electrochemical characterizations: capacitance–voltage (C–V) and constant capacitance (ConCap) measurements. After O2 plasma treatment, the potential of the EIS sensor dramatically shifts to a more negative value. This was successfully reset by using an annealing process.
In the present work, surface functionalization of different sensor materials was studied. Organosilanes are well known to serve as coupling agent for biomolecules or cells on inorganic materials. 3-aminopropyltriethoxysilane (APTES) was used to attach microbiological spores time to an interdigitated sensor surface. The functionality and physical properties of APTES were studied on isolated sensor materials, namely silicon dioxide (SiO2) and platinum (Pt) as well as the combined material on sensor level. A predominant immobilization of spores could be demonstrated on SiO2 surfaces. Additionally, the impedance signal of APTES-functionalized biosensor chips has been investigated.
The invention pertains to a CellDrum electrode arrangement for measuring mechanical stress, comprising a mechanical holder (1 ) and a non-conductive membrane (4), whereby the membrane (4) is at least partially fixed at its circumference to the mechanical holder (1), keeping it in place when the membrane (4) may bend due to forces acting on the membrane (4), the mechanical holder (1) and the membrane (4) forming a container, whereby the membrane (1) within the container comprises an cell- membrane compound layer or biological material (3) adhered to the deformable membrane 4 which in response to stimulation by an agent may exert mechanical stress to the membrane (4) such that the membrane bending stage changes whereby the container may be filled with an electrolyte, whereby an electric contact (2) is arranged allowing to contact said electrolyte when filled into to the container, whereby within a predefined geometry to the fixing of the membrane (4) an electrode (7) is arranged, whereby the electrode (7) is electrically insulated with respect to the electric contact (2) as well as said electrolyte, whereby mechanical stress due to an agent may be measured as a change in capacitance.