Article
Refine
Year of publication
Document Type
- Article (3226) (remove)
Language
- English (3226) (remove)
Keywords
- Einspielen <Werkstoff> (7)
- avalanche (5)
- Earthquake (4)
- FEM (4)
- Finite-Elemente-Methode (4)
- LAPS (4)
- biosensors (4)
- field-effect sensor (4)
- frequency mixing magnetic detection (4)
- CellDrum (3)
- Heparin (3)
- Label-free detection (3)
- additive manufacturing (3)
- capacitive field-effect sensor (3)
- hydrogen peroxide (3)
- magnetic nanoparticles (3)
- shakedown analysis (3)
- snow (3)
- tobacco mosaic virus (TMV) (3)
- Acyl-amino acids (2)
- Aeroelasticity (2)
- Aminoacylase (2)
- Bacillaceae (2)
- Bacillus atrophaeus (2)
- Biotechnological application (2)
- Brake set-up (2)
- CFD (2)
- Capacitive field-effect sensor (2)
- Chemometrics (2)
- Drinfeld modules (2)
- Einspielanalyse (2)
- Empirical process (2)
- Field-effect sensor (2)
- Freight rail (2)
- Goodness-of-fit test (2)
- Hot S-parameter (2)
- IR spectroscopy (2)
- Independence test (2)
- Light-addressable potentiometric sensor (2)
- Lipopolysaccharide (2)
- MINLP (2)
- NMR spectroscopy (2)
- Paired sample (2)
- Parametric bootstrap (2)
- Principal component analysis (2)
- Pump System (2)
- Raman spectroscopy (2)
- Shakedown analysis (2)
- Simulation (2)
- Standardization (2)
- Stiffness (2)
- Subtilases (2)
- Subtilisin (2)
- Traglastanalyse (2)
- Transcendence (2)
- UAV (2)
- bacterial cellulose (2)
- bubble column (2)
- capacitive field-effect sensors (2)
- carbonized rice husk (2)
- constructive alignment (2)
- damage (2)
- energy efficiency (2)
- examination (2)
- factory planning (2)
- fused filament fabrication (2)
- gold nanoparticles (2)
- harmonic radar (2)
- immobilization (2)
- impedance spectroscopy (2)
- light-addressable potentiometric sensor (2)
- likelihood ratio test (2)
- limit analysis (2)
- locomotion (2)
- long-term retention (2)
- manufacturing flexibility (2)
- methanation (2)
- multimodal (2)
- muscle fascicle behavior (2)
- not identically distributed (2)
- penicillinase (2)
- plug flow reactor (2)
- practical learning (2)
- prebiotic (2)
- qNMR (2)
- rapid tooling (2)
- shakedown (2)
- t-modules (2)
- ultrasound (2)
- ultrasound imaging (2)
- (Bio)degradation (1)
- (Poly)saccharides (1)
- 1P hub loads (1)
- 3-D printing (1)
- 3D nonlinear finite element model (1)
- 802.15.4 (1)
- Acceleration (1)
- Achilles tendon (1)
- Acylation (1)
- Adaptive control (1)
- Additive Manufacturing (1)
- Afterload (1)
- Ageing (1)
- Air purification (1)
- Aircraft sizing (1)
- Algal Turf Scrubber (1)
- Algal–bacterial bioflm (1)
- Alginate beads (1)
- Alkalihalobacillus okhensis (1)
- Aloe vera (1)
- AlterG (1)
- Alternating plasticity (1)
- Alzheimer's disease (1)
- Analysis (1)
- Analytischer Zulaessigkeitsnachweis (1)
- Anammox (1)
- Anastomotic leakage (1)
- Anatomy (1)
- Annulus Fibrosus (1)
- Antarctic Glaciology (1)
- Antibias (1)
- Architectural design (1)
- Architectural gear ratio (1)
- Artificial intelligence (1)
- Assembly (1)
- Assistive technology (1)
- Asymptotic efficiency (1)
- Authenticity (1)
- Autolysis (1)
- Automated driving (1)
- Automatic control (1)
- Automotive application (1)
- Automotive safety approach (1)
- Autonomy (1)
- Avalanche (1)
- Axialbelastung (1)
- Axially cracked pipe (1)
- Bacillus atrophaeus spores (1)
- Bacillus sp (1)
- Bacterial cellulose (1)
- Balance (1)
- Balanced hypergraph (1)
- Bank-issued Warrants (1)
- Basis Reduktion (1)
- Basis reduction (1)
- Bauingenieurwesen (1)
- Behaviour factor q (1)
- Benchmark (1)
- Bicharakteristikenverfahren (1)
- Bioabsorbable (1)
- Biocatalysis (1)
- Biocomposites (1)
- Biofuel (1)
- Biogas (1)
- Biomass (1)
- Biomechanical simulation (1)
- Bioreaktor (1)
- Biorefinery (1)
- Biosolubilization (1)
- Biosurfactants (1)
- Blade element method (1)
- Bloom’s Taxonomy (1)
- Bluetooth (1)
- Blutzellenlagerung (1)
- Bone quality and biomechanics (1)
- Booster Station (1)
- Booster Stations (1)
- Bootstrap (1)
- Bootstrapping (1)
- Borehole heat exchanger (1)
- Bragg peak (1)
- Brake test (1)
- Braking curves (1)
- Broad pH spectrum (1)
- Brownian Pillow (1)
- Buffering Capacity (1)
- Butanol (1)
- CAD (1)
- CAV (1)
- CNOT (1)
- CO2 emission reduction targets (1)
- CRISPR/Cas9 (1)
- Calorimetric gas sensor (1)
- Capacitive field-effect (1)
- Capacitive model (1)
- Carbon sources (1)
- Cardiac myocytes (1)
- Cardiac tissue (1)
- Cardiovascular MRI (1)
- Categorial variable (1)
- Cell permeability (1)
- Cellular force (1)
- Cellulose nanostructure (1)
- Cement infiltration (1)
- Cementoblast (1)
- Censored data (1)
- Chance Constraint (1)
- Chaperone (1)
- Chaperone co-expression (1)
- Charging station (1)
- Chemical images (1)
- Chemical imaging sensor (1)
- Chemical sensor (1)
- Chondroitin sulfate (1)
- Circuit simulation (1)
- Circular Dichroism (1)
- Circular bioeconomy (1)
- Civil engineering (1)
- Clinical decision support systems (1)
- Clostridium acetobutylicum (1)
- Clusterion (1)
- Co-managed care (1)
- Collective risk model (1)
- Commercial Vehicle (1)
- Common Rail Injection System (1)
- Competence Developing Games (1)
- Competitiveness (1)
- Complex System (1)
- Complex-valued eigenvalues (1)
- Compliance (1)
- Compression (1)
- Computational biomechanics (1)
- Concomitant (1)
- Conductive Boundary Condition (1)
- Consensus (1)
- Constitutive model (1)
- Contractile tension (1)
- Contractility (1)
- Convex optimization (1)
- Cost function (1)
- Cost-effectiveness (1)
- Coverage probability (1)
- Cramér-von-Mises statistic (1)
- Cramér-von-Mises test (1)
- Crashworthiness (1)
- Cross border adjustment mechanism (1)
- Crude heparin (1)
- Crámer–von-Mises distance (1)
- Culture media (1)
- Cyclotron production (1)
- C–V method (1)
- DLR-ESTEC GOSSAMER roadmap for solar sailing (1)
- DNA biosensor (1)
- DNA hybridization (1)
- DPA (dipicolinic acid) (1)
- Damage mechanics theory (1)
- Decomposition (1)
- Decoupling (1)
- Deformation (1)
- Dehydrogenase (1)
- Design-by-analysis (1)
- Detergent protease (1)
- Deuterated solvents (1)
- Deuterium NMR (1)
- Diaphorase (1)
- Diesel Engine (1)
- Dietary supplements (1)
- Disc Degeneration (1)
- Discontinuous fractures (1)
- Discourse ethics (1)
- Discrete Optimization (1)
- Disposition Effect (1)
- Distributed Control Systems, (1)
- Diversity Management (1)
- Drag estimation (1)
- Driver assistance system (1)
- Driving cycle recognition (1)
- Druckbeanspruchung (1)
- Druckbehälter (1)
- Druckbelastung (1)
- Druckgeräte (1)
- Drug simulation (1)
- Dry-low-NOx (DLN) combustion (1)
- Duality (1)
- Dynamic simulation (1)
- E-Mobility (1)
- ECMS (1)
- EIS capacitive sensor (1)
- ELISA (1)
- ES-FEM (1)
- Effective modal mass (1)
- Eigenvalue trajectories (1)
- Einspiel-Analyse (1)
- Einspiel-Kriterium (1)
- Einspielen (1)
- Elastizität (1)
- Elderly (1)
- Electrolyte–insulator–semiconductor (1)
- Electromagnetism (1)
- Electromechanical modeling (1)
- Electronic vehicle (1)
- Elemental (1)
- Emilia-Romagna earthquake (1)
- Empirical consequence curves (1)
- Empirical fragility functions (1)
- End-to-end colorectal anastomosis (1)
- Endothelial cells (1)
- Endothelial dysfunction (1)
- Energy management strategies (1)
- Energy-intensive industry (1)
- Engineering Application (1)
- Engineering Habitus (1)
- Enterprise information systems (1)
- Environmental impact (1)
- Enzymatic biosensor (1)
- Enzyme coverage (1)
- Enzyme logic gate (1)
- Enzyme-linked immunosorbent assay (1)
- Epithel (1)
- Equivalence test (1)
- Esophageal Doppler monitor (1)
- European Transient Cycle (1)
- Eutectic Silver Copper alloy (1)
- Experiment (1)
- Experimental validation (1)
- Explainability (1)
- External knee adduction moments (1)
- Extracellular enzymes (1)
- Extraterrestrial Glaciology (1)
- FS-FEM (1)
- Fall prevention (1)
- Fault approximation (1)
- Fault detection (1)
- Feature selection (1)
- Fehlerstellen (1)
- Fibroblast (1)
- Field effect (1)
- Field-effect biosensor (1)
- Finite differences (1)
- Finite element analysis (1)
- Finite element method (1)
- Finite element modelling (1)
- Finland (1)
- Fließgrenze (1)
- Floor prices (1)
- Flutter (1)
- Force (1)
- Forces (1)
- Fracture classification (1)
- Fracture configuration (1)
- Fracture simulation (1)
- Frame structure (1)
- Freeze–thaw process (1)
- Frequency adaption (1)
- Frequency mixing magnetic detection (1)
- Full-vehicle crash test (1)
- Functional Delta Method (1)
- Furnace (1)
- Fusion (1)
- GOSSAMER-1 (1)
- Ga-68 (1)
- Game-based learning (1)
- Gamification (1)
- Gamma distribution (1)
- Genetic algorithm (1)
- Geriatric (1)
- German (1)
- Germany (1)
- Glaciological instruments and methods (1)
- Glaucoma (1)
- Global and local collapse (1)
- Glucosamine (1)
- Gold nanoparticles (1)
- Goodness-of-fit tests for uniformity (1)
- Grenzwertberechnung (1)
- Ground-level falls (1)
- Hadamard differentiability (1)
- Haemodialysis (1)
- Hall’s Theorem (1)
- Halotolerant protease (1)
- Handbike (1)
- Harnleiter (1)
- Hazard assessment (1)
- Heart tissue culture (1)
- Heat transport (1)
- Hemoglobin structure (1)
- Heterostructure (1)
- High hydrogen combustion (1)
- High-field NMR (1)
- Higher derivations (1)
- Hip fractures (1)
- Hodgkin–Huxley models (1)
- Hoeffding-Blum-Kiefer-Rosenblatt independence test (1)
- Homogenization (1)
- Hotelling’s T² test (1)
- Human factors (1)
- Human-Computer interaction (1)
- Hydrogen combustion (1)
- Hydrogen gas turbine (1)
- Hydrogen peroxide (1)
- Hyperdifferentials (1)
- Hypergraph (1)
- Hypersecretion (1)
- Hämoglobin (1)
- Hämoglobinstruktur (1)
- INSYSME (1)
- IP-based networks (1)
- IR (1)
- IT security education (1)
- Illustration (1)
- Image Reconstruction (1)
- Imaging (1)
- Impedance spectroscopy (1)
- In-plane performance, isolation (1)
- Incident analysis (1)
- Inclusion bodies (1)
- Incomplete data (1)
- Individual Investors (1)
- Induced pluripotent stem cells (1)
- Industrial Automation Technology, (1)
- Infill wall design (1)
- Information extraction (1)
- Inorganic ions (1)
- Inotropic compounds (1)
- Instructional design (1)
- Integrated empirical distribution (survival) function (1)
- Interior transmission problem (1)
- Interstellar objects (1)
- Intervertebral Disc (1)
- Intradiscal Pressure (1)
- Inverse Scattering (1)
- Inverse dynamic problem (1)
- Inverse kinematic problem (1)
- Inverse scattering problem (1)
- Ion channels (1)
- Ions (1)
- Iterative learning control (1)
- Justice (1)
- Keyword analysis (1)
- Kinetic energy (1)
- Knochen (1)
- Knochenbildung (1)
- Knochenchirugie (1)
- Knochendichte (1)
- Koenig’s Theorem (1)
- Kohlenstofffaser (1)
- LPS (1)
- Lab-on-Chip (1)
- Lactobacillus rhamnosus GG (1)
- Landslide tsunamis (1)
- Langevin theory (1)
- Large scale tests (1)
- Latvia (1)
- Layer-by-layer adsorption (1)
- LbL films (1)
- Left ventriular function (1)
- Level system (1)
- Lidar (1)
- Light-addressable Potentiometric Sensor (1)
- Lignocellulose (1)
- Limit analysis (1)
- Linear discriminant analysis (1)
- Linear elastic analysis (1)
- Liver (1)
- Local path planning (1)
- Long COVID (1)
- Low-field NMR (1)
- Luftreiniger (1)
- MCDA (1)
- MILP (1)
- MOS (1)
- MR-stethoscope (1)
- MST (1)
- MUT measurement; scanner (1)
- Machine learning (1)
- Magnetic field strength (1)
- Magnetic nanoparticles (1)
- Magnetic resonance imaging (MRI) (1)
- Mainstream (1)
- Manipulated variables (1)
- Manufacturer (1)
- Marginal homogeneity test (1)
- Marker-free mutagenesis (1)
- Masonry infill (1)
- Masonry partition walls (1)
- Matching (1)
- Materialermüdung (1)
- Measurement models (1)
- Measurement uncertainty (1)
- Mechanotransduction (1)
- Medical AI (1)
- Medical radionuclide production (1)
- Medusomyces gisevi (1)
- Metal contaminants (1)
- Metascintillator (1)
- Methane (1)
- Microcirculation (1)
- Microfluidic solvent extraction (1)
- Micromagnetic simulation (1)
- Micromix combustion (1)
- Mikrosystemtechnik (1)
- Mild cognitive impairment (1)
- Missions (1)
- Mobility (1)
- Mobility tests (1)
- Mobility transition (1)
- Mode converter (1)
- Model-driven software engineering (1)
- Modelica (1)
- Modeling (1)
- Modelling (1)
- Modern constructions (1)
- Molecular modelling (1)
- Molecular weight determination (1)
- Molten salt receiver system (1)
- Molten salt solar tower (1)
- Monte Carlo Tree Search (1)
- Morphing (1)
- Multi-criteria decision analysis (1)
- Multi-objective optimization (1)
- Multi-sample problem (1)
- Multi-storey (1)
- Multianalyte detection (1)
- Multicell (1)
- Multiple TOF kernels (1)
- Multiplexing (1)
- Multirotor UAS (1)
- Muscle (1)
- Muscle Fascicle (1)
- Muscle Force (1)
- Musculoskeletal model (1)
- Musculoskeletal system (1)
- Myocardial infarction and cardiac death (1)
- NGN (1)
- NMR (1)
- NMR exchange relaxometry (1)
- NONOate (1)
- Natural fibres (1)
- Natural frequency (1)
- Negative Feedback Trading (1)
- Negative impedance convertor (1)
- Neural Network (1)
- Nitric Oxide (1)
- Nitric Oxide Donor (1)
- Nitrogen removal (1)
- Non-parallel fissures (1)
- Nonequilibrium dynamics (1)
- Nonlinear Dynamics (1)
- Normative standards (1)
- Nucleus Pulposus (1)
- Numerical inversion of Laplace transforms (1)
- Numerical linear algebra (1)
- Numerical modelling (1)
- O2 plasma (1)
- Obstacle avoidance (1)
- Ocular blood flow (1)
- Organic acids (1)
- Organic light-emitting diode display (1)
- Organizational Culture (1)
- Organkultur (1)
- Osteoporose (1)
- Osteoporosis (1)
- Out-of-plane capacity (1)
- Overland flow (1)
- P2G (1)
- PBEE (1)
- PIV (1)
- PLS-regression (1)
- PROFINET (1)
- Paralympic sport (1)
- Parasitic drag (1)
- Parking (1)
- Partial nitritation (1)
- Path planning (1)
- Penicillin (1)
- Periods (1)
- Permeability (1)
- Permeabilität (1)
- Peroxidase (1)
- Pflanzenphysiologie (1)
- Pflanzenscanner (1)
- Pflanzenstress (1)
- Pharmacology (1)
- Physiology (1)
- Piping (1)
- Plant virus (1)
- Plasma (1)
- Plasma diagnostics (1)
- Plasmacluster ion technology (1)
- Plastizität (1)
- Poly(allylamine hydrochloride) (1)
- Poly(d,l-lacticacid) (1)
- Polyimide (1)
- Polylactide acid (1)
- Polymer-matrix composites (1)
- Polysaccharides (1)
- Porositat (1)
- Post-COVID-19 syndrome (1)
- Powertrain (1)
- Precast buildings (1)
- Predictive battery discharge (1)
- Preference assessment (1)
- Pressure loaded crack-face (1)
- Prevention (1)
- Probability distribution mapping (1)
- Process virtualization (1)
- Product bundling (1)
- Product-integration (1)
- Progressive plastic deformation (1)
- Propeller (1)
- Propeller elasticity (1)
- Propeller whirl flutter (1)
- Proper Orthogonal Decomposition (1)
- Prophylaxis (1)
- Proximal humerus fracture (1)
- Pulsations (1)
- Pumping systems (1)
- Q-criterion (1)
- Quality control (1)
- Quantum chemistry (1)
- RAMMS (1)
- RVA (1)
- Radar (1)
- Rapid Prototyping (1)
- Rapid Technologie (1)
- Rapid prototyping (1)
- Ratchetting (1)
- Raumluft (1)
- Real-time monitoring (1)
- Recombinant activated protein C (1)
- Red blood cell storage (1)
- Regionalization (1)
- Rehabilitation Technology and Prosthetics (1)
- Rehabilitation engineering (1)
- Reinforced concrete frame (1)
- Requirements prioritization (1)
- Requirements relations (1)
- Resampling test (1)
- Reservation system (1)
- Resistive temperature detector (1)
- Resolvent Operator (1)
- Resonance-mode measurement (1)
- Response Surface Method (1)
- Retinal vessel analysis (1)
- Retinal vessels (1)
- Robotic rehabilitation (1)
- Rohr (1)
- Rohrbruch (1)
- Rotary encoder (1)
- Rotator cuff (1)
- Running (1)
- S-FEM (1)
- SFCW (1)
- SLM (1)
- SOA (1)
- ScaLAPACK (1)
- Schwammknochen (1)
- Seismic design (1)
- Seismic loading (1)
- Selective Catalytic Reduction (1)
- Self-driving (1)
- Semi-parametric random censorship model (1)
- Septic cardiomyopathy (1)
- Services (1)
- Shakedown (1)
- Shakedown criterion (1)
- Shoulder (1)
- Shunting (1)
- Silk fibroin (1)
- Simultaneous determination (1)
- Skeletal muscle (1)
- Slab deflection (1)
- Small Aral Sea (1)
- Small spacecraft (1)
- Snow (1)
- Sn₃O₄ (1)
- Soft independent modeling of class analogy (1)
- Software and systems modeling (1)
- Solar sail (1)
- Solitary waves (1)
- Spectroscopy (1)
- Spleen (1)
- Stahl (1)
- Steel industry (1)
- Stenotrophomonas maltophilia (1)
- Sterilisation process (1)
- Stochastic Programming (1)
- Streptomyces griseus (1)
- Streptomyces lividans (1)
- Stress concentrations (1)
- Structural design (1)
- Strukturanalyse (1)
- Subclacial exploration (1)
- Subglacial lakes (1)
- Surgical Navigation and Robotics (1)
- Surgical staplers (1)
- Survival analysis (1)
- Suspension bridge (1)
- TMV adsorption (1)
- TOF PET (1)
- Tank (1)
- Ta₂O₅ gate (1)
- Technical Operations Research (1)
- Technical Operations Research (TOR) (1)
- Telecommunication (1)
- Temperaturabhängigkeit (1)
- Tendon Rupture (1)
- Tendon properties (1)
- Tendons (1)
- Tension (1)
- Thin shell finite elements (1)
- Tinetti test (1)
- Tissue Engineering (1)
- Tobacco mosaic virus (TMV) (1)
- Tool support (1)
- Trading Behavior (1)
- Traglast (1)
- Train composition (1)
- Trajectories (1)
- Transformation (1)
- Transient flux distribution (1)
- Transmission Eigenvalues (1)
- Two-phase modelling (1)
- Typographie (1)
- USP (1)
- Ultrasound (1)
- Uncertainty (1)
- Uniaxial compression test (1)
- Unreinforced masonry buildings (1)
- Unsteady aerodynamics (1)
- Uracil-phosphoribosyltransferase (1)
- User study (1)
- Utilization improvement (1)
- VM (1)
- VOF (1)
- Vapnik–Čhervonenkis class (1)
- Variable height stapler design (1)
- Vascular response (1)
- Vasomotions (1)
- Velocity (1)
- Vertebroplastie (1)
- Vertebroplasty (1)
- Vertex cover (1)
- Vibrio natriegens (1)
- Virtual reality (1)
- Virtuelle Maschine (1)
- Viscous flow (1)
- Viskose Strömung (1)
- Viskosität (1)
- Visual field asymmetry (1)
- Volterra integral equation (1)
- Volume of confidence regions (1)
- Volume status (1)
- Wastewater (1)
- Water Distribution (1)
- Water Supply Networks (1)
- Wiegand sensor (1)
- Wind milling (1)
- Wind tunnel experiments (1)
- Wireless Networks (1)
- Wolff's Law (1)
- Wolffsches Gesetz (1)
- Wundheilung (1)
- XOR (1)
- Zeta potential (1)
- Zug-Druck Belastung (1)
- acetoin (1)
- acetoin reductase (1)
- achilles tendon (1)
- actin cytoskeleton (1)
- actuator-sensor system (1)
- adaptive systems (1)
- adipose-derived stromal cells (ASCs) (1)
- adsorption (1)
- agility (1)
- alcoholic beverages (1)
- allocation (1)
- alternierend Verformbarkeit (1)
- aminooctanethiol (1)
- amperometric biosensors (1)
- anaesthetic complications (1)
- anammox (1)
- anisotropy (1)
- annealing (1)
- aortic perfusion (1)
- aromatic amines (1)
- artificial intelligence (1)
- artificial olfactory image (1)
- aseptic parameters (1)
- aspergillus (1)
- assistance system (1)
- asymptotic relative efficiency (1)
- atomic layer deposition (1)
- automated vehicles (1)
- autonomous navigation (1)
- availability (1)
- barium strontium titanate (1)
- batteries and fuel cells (1)
- bi-enzyme biosensor (1)
- biaxial tensile experiment (1)
- bicharacteristics (1)
- bio-methane (1)
- bioavailability (1)
- bioburdens (1)
- biocompatible (1)
- biocompatible materials (1)
- biodegradabl (1)
- biodegradable electronic devices (1)
- biodegradable polymers (1)
- biofilms (1)
- biological dosimeter (1)
- biomechanics (1)
- biomethane (1)
- biopotential electrodes (1)
- biosensor (1)
- body imaging at 7 T MRI (1)
- body limbs (1)
- bone density (1)
- bone structure (1)
- bootstrap (1)
- borefields (1)
- borehole disposal (1)
- brachytherapy (1)
- building energy modelling (1)
- building energy simulation (1)
- burst pressure (1)
- burst tests (1)
- calorimetric gas sensor (1)
- calorimetric gas sensor;hydrogen peroxide;wireless sensor system (1)
- cancellous bone (1)
- capacitive EIS sensor (1)
- capacitive electrolyte–insulator–semiconductor sensors (1)
- capacitive model (1)
- carbon electrodes (1)
- cardiac gating (1)
- cardiomyocyte biomechanics (1)
- cardiovascular MR imaging (1)
- catalytic metal (1)
- cell aerosolization (1)
- cell atomization (1)
- central symmetry test (1)
- cerebral small vessel disease (1)
- chance constrained programming (1)
- change management (1)
- chemical sensor (1)
- churches (1)
- civil engineering (1)
- climate change (1)
- coculture (1)
- cognitive impairment (1)
- coherent structures (1)
- colorization (1)
- community dwelling (1)
- complete block symmetry (1)
- compression behavior (1)
- computational fluid dynamics analysis (1)
- concentrating collector (1)
- conditional excess distribution (1)
- conditional expectation principle (1)
- confidence interval (1)
- connected automated vehicles (1)
- connective tissue (1)
- constitutive modeling (1)
- contactless conductivity sensor (1)
- control gate (1)
- correlation (1)
- coupled Néel–Brownian relaxation dynamics (1)
- covariance principle (1)
- crop yield (1)
- crystallization (1)
- cyber-physical production systems (1)
- dam-break (1)
- debris flow (1)
- deficit irrigation (1)
- dental trauma (1)
- deserts (1)
- design of technical systems (1)
- detection of charged macromolecules (1)
- detergent protease (1)
- dialysis (1)
- difficult airway (1)
- digital factory (1)
- direct method (1)
- disposal facility (1)
- distorted element (1)
- distribution grid simulation (1)
- diversity management (1)
- double-lumen tube intubation (1)
- drag force (1)
- drop jump (1)
- drug metabolising enzymes (1)
- drug–drug interactions (1)
- e-mobility (1)
- eVTOL development (1)
- eVTOL safety (1)
- earthquake engineering (1)
- ecological structure (1)
- eigensolvers (1)
- elastic solids (1)
- elastomers (1)
- electrocardiogram (1)
- electrolyte-insulator semiconductor sensor (EIS) (1)
- electrolyte-insulator-semiconductor capacitors (1)
- electromyography (1)
- electronic nose (1)
- electrospinning (1)
- encapsulation materials (1)
- endoluminal (1)
- endospores (1)
- energy (1)
- energy absorption (1)
- energy dissipation (1)
- energy transfer (1)
- engineering (1)
- entrepreneurship education (1)
- enzymatic (bio)degradation (1)
- enzymatic biosensor (1)
- enzyme cascade (1)
- enzyme kinetics (1)
- enzyme-logic gate (1)
- epithelization (1)
- equivalent circuit (1)
- equivalent stiffness (1)
- event-based simulation (1)
- exchangeability test (1)
- exopolysaccharides (1)
- experimental evaluation (1)
- extracorporeal membrane oxygenation (1)
- eye movement modelling examples (1)
- fatigue analyses (1)
- fibers (1)
- fibroin (1)
- field-effect structure (1)
- filamentous fungi (1)
- flaw (1)
- force generation (1)
- forecast (1)
- forehead EEG (1)
- fortschreitende plastische Deformation (1)
- frequency mixing (1)
- fuel cell vehicle (1)
- functional data (1)
- gait (1)
- gamification (1)
- gas sensor (1)
- gaseous hydrogen peroxide (1)
- genetic algorithm (1)
- genome engineering (1)
- geological disposal (1)
- geothermal (1)
- global optimization (1)
- glucose (1)
- glucose oxidase (GOx) (1)
- glycine (1)
- goodness-of-fit test (1)
- granular silo (1)
- graphene oxide (1)
- halotolerant protease (1)
- harmonic radar tags (1)
- healthy aging (1)
- heat demand (1)
- heat transfer coefficient (1)
- heating system (1)
- heavy metals (1)
- hiPS cardiomyocytes (1)
- high field MR imaging (1)
- high-alkaline subtilisin (1)
- high-intensity exercise (1)
- high-k material (1)
- horseradish peroxidase (HRP) (1)
- huge dimensional data (1)
- human dermal fibroblasts (1)
- human metabolites (1)
- humic acid (1)
- hydraulic modelling (1)
- hydrogel (1)
- hydrogels (1)
- hydroxylation (1)
- hyper-gravity (1)
- hyperelastic (1)
- hypo-gravity (1)
- hypoplasticity (1)
- ignition (1)
- impulsive effects (1)
- in-ear EEG (1)
- in-situ monitoring (1)
- incontinence (1)
- independence test (1)
- industrial agents (1)
- infill strategy (1)
- innovation management (1)
- intelligent control (1)
- intelligent energy management (1)
- intraclass correlation coefficient (1)
- irradiation (1)
- key performance indicators (1)
- konvexe Optimierung (1)
- lable-free detection (1)
- large language models (1)
- large-scale inspection (1)
- layer-by-layer technique (1)
- legal obligations (1)
- light-addressable electrode (1)
- light-addressing technologies (1)
- lignite (1)
- limit load (1)
- lipopolysaccharide (1)
- lipopolysaccharides (1)
- liquid-storage tank (1)
- liquid-structure interaction (1)
- lizards (1)
- load limit (1)
- low-rank coal (1)
- machine learning (1)
- macro-element (1)
- magnetic actuation (1)
- magnetic beads (1)
- magnetic biosensing (1)
- magnetic relaxation (1)
- magnetic resonance imaging (1)
- magnetic sandwich immunoassay (1)
- magnetic sensing (1)
- magnetic sensors (1)
- magnetic separation (1)
- magnetic tweezers (1)
- magnetophoretic velocity (1)
- mainstream deammonification (1)
- manufacturing (1)
- manufacturing data model (1)
- mathematical optimization (1)
- mechanical buffer (1)
- mechanical properties (1)
- metagenomics (1)
- metal-oxide-semiconductor structure (1)
- microbial diversity (1)
- microfluidics (1)
- micromagnetic simulation (1)
- micronutrients (1)
- microplasma (1)
- microwave (MW) plasma (1)
- microwave measurements (1)
- mix flexibility (1)
- mixed-integer linear programming (1)
- mobile manipulation (1)
- model performance (1)
- multi-agent systems (1)
- multi-functional material (1)
- multi-sensing platform (1)
- multianalyte detection (1)
- multinomial distribution (1)
- multiparametric immunoassays (1)
- multiplex detection (1)
- multivariate normal distribution (1)
- muscle mechanics (1)
- nanobelts (1)
- nanomaterials (1)
- nanoparticle coverage (1)
- nanostructured carbonized plant parts (1)
- nanostrukturierte carbonisierte Pflanzenteile (1)
- naphtols (1)
- neutrons (1)
- next generation network (1)
- nitrogen elimination (1)
- non-simplex S-FEM elements (1)
- nonlinear VNA measurements (1)
- nonlinear radar (1)
- nonlinear transient analyses (1)
- novel photoexcitation method (1)
- nuclear waste (1)
- numerical model (1)
- on-chip integrated addressable EISCAP sensors (1)
- onion (1)
- optical fibers (1)
- optical sensor setup (1)
- optical spore trapping (1)
- optical trapping (1)
- optimization (1)
- optimization system (1)
- organosilanes (1)
- overload (1)
- oxidative stable protease (1)
- pH sensors (1)
- parabolic flight (1)
- penicillin (1)
- performance analysis (1)
- performance testing (1)
- phenols (1)
- phonocardiogram (1)
- photoelectrochemistry (1)
- physical model (1)
- physiology (1)
- pipes (1)
- plant scanner (1)
- plant stress (1)
- plant virus detection (1)
- plasma jet (1)
- plug-based microfluidic device (1)
- point-focussing system (1)
- poly(d, l-lactic acid) (1)
- polyaniline (1)
- polyaspartic acid (1)
- polyetheretherketone (1)
- polyetheretherketone (PEEK) (1)
- polystyrene sulfonate (1)
- porous materials (1)
- portfolio risk (1)
- power-to-gas (1)
- prevention (1)
- product bundling (1)
- product liability (1)
- production planning and control (1)
- programming (1)
- prostate cancer (1)
- prostatectomy (1)
- proton therapy (1)
- protons (1)
- psychosocial (1)
- pullulan (1)
- quality of life (1)
- random effects (1)
- random effects meta-regression model (1)
- ratchetting (1)
- raytracing (1)
- recombinant expression (1)
- rehabilitation (1)
- relative dosimetry (1)
- reliability analysis (1)
- reliability of structures (1)
- remote sensing (1)
- research association (1)
- resilience (1)
- retention time (1)
- retinal microvasculature (1)
- retinal vessels (1)
- rubber (1)
- running (1)
- sEMG (1)
- sarcomere operating length (1)
- scanned light pulse technique (1)
- seismic response (1)
- semantic role labeling (1)
- separable Hilbert space (1)
- series elastic element behavior (1)
- service-oriented architectures (1)
- shakedown analyses (1)
- shotgun sequencing (1)
- shoulder (1)
- silanization (1)
- simulation (1)
- sizing (1)
- slum classification (1)
- smart-charging (1)
- smooth muscle contraction (1)
- soil amendment (1)
- soil health (1)
- soil remediation (1)
- solar process heat (1)
- spatial resolution (1)
- speaker attribution (1)
- spore kill rate (1)
- sprint start (1)
- standard error of measurement (1)
- sterilisation (1)
- sterility (1)
- sterility tests (1)
- sterilization (1)
- sterilization conditions (1)
- sterilization efficacy (1)
- sterilization methods (1)
- stiffness (1)
- stochastic optimization (1)
- stochastic programming (1)
- strain energy function (1)
- stretch reflex (1)
- stretch-shortening cycle (1)
- structure-soil-structure interaction (1)
- superabsorbent polymers (1)
- superparamagnetic bead (1)
- superparamagnetic nanoparticles (1)
- supramolecular structures (1)
- surface functionalization (1)
- surface modification (1)
- surface-orthogonal path planning (1)
- survival (1)
- sustainability (1)
- swelling properties (1)
- swimming (1)
- system optimization (1)
- system synthesis (1)
- technical operations research (1)
- technology planning (1)
- telecommunication (1)
- temperature (1)
- tendon rupture (1)
- tension–torsion loading (1)
- test-retest reliability (1)
- theory and modeling (1)
- thermal dose (1)
- thermal ratcheting (1)
- tilted constant illumination (1)
- tissue temperature (1)
- titanium dioxide photoanode (1)
- transmit antenna arrays (1)
- transponder (1)
- transporters (1)
- tri-lineage differentiation (1)
- truss (1)
- turnip vein clearing virus (TVCV) (1)
- twin-fluid atomizer (1)
- ultrasonography (1)
- ultrathin gate insulators (1)
- uniformly most powerful invariant test (1)
- unloading (1)
- urease (1)
- validation methods (1)
- vault (1)
- vessels (1)
- video learning (1)
- videolaryngoscopy (1)
- virgin passive (1)
- virtual clean room (1)
- viscoelasticity (1)
- visualization (1)
- volume flexibility (1)
- walking (1)
- walking gait (1)
- wastewater (1)
- water economy (1)
- water supply design (1)
- wind turbine production (1)
- wound healing (1)
- yield (1)
- yield stress (1)
- α-aminoacylase (1)
- ε-lysine acylase (1)
Institute
- Fachbereich Medizintechnik und Technomathematik (1343)
- INB - Institut für Nano- und Biotechnologien (501)
- Fachbereich Chemie und Biotechnologie (466)
- IfB - Institut für Bioengineering (408)
- Fachbereich Elektrotechnik und Informationstechnik (401)
- Fachbereich Energietechnik (360)
- Fachbereich Luft- und Raumfahrttechnik (247)
- Fachbereich Maschinenbau und Mechatronik (147)
- Fachbereich Wirtschaftswissenschaften (106)
- Fachbereich Bauingenieurwesen (68)
- Solar-Institut Jülich (43)
- ECSM European Center for Sustainable Mobility (27)
- Sonstiges (21)
- Institut fuer Angewandte Polymerchemie (20)
- Freshman Institute (17)
- Nowum-Energy (16)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (15)
- Fachbereich Gestaltung (12)
- Fachbereich Architektur (9)
- ZHQ - Bereich Hochschuldidaktik und Evaluation (5)
A generalized shear-lag theory for fibres with variable radius is developed to analyse elastic fibre/matrix stress transfer. The theory accounts for the reinforcement of biological composites, such as soft tissue and bone tissue, as well as for the reinforcement of technical composite materials, such as fibre-reinforced polymers (FRP). The original shear-lag theory proposed by Cox in 1952 is generalized for fibres with variable radius and with symmetric and asymmetric ends. Analytical solutions are derived for the distribution of axial and interfacial shear stress in cylindrical and elliptical fibres, as well as conical and paraboloidal fibres with asymmetric ends. Additionally, the distribution of axial and interfacial shear stress for conical and paraboloidal fibres with symmetric ends are numerically predicted. The results are compared with solutions from axisymmetric finite element models. A parameter study is performed, to investigate the suitability of alternative fibre geometries for use in FRP.
Wearable EEG has gained popularity in recent years driven by promising uses outside of clinics and research. The ubiquitous application of continuous EEG requires unobtrusive form-factors that are easily acceptable by the end-users. In this progression, wearable EEG systems have been moving from full scalp to forehead and recently to the ear. The aim of this study is to demonstrate that emerging ear-EEG provides similar impedance and signal properties as established forehead EEG. EEG data using eyes-open and closed alpha paradigm were acquired from ten healthy subjects using generic earpieces fitted with three custom-made electrodes and a forehead electrode (at Fpx) after impedance analysis. Inter-subject variability in in-ear electrode impedance ranged from 20 kΩ to 25 kΩ at 10 Hz. Signal quality was comparable with an SNR of 6 for in-ear and 8 for forehead electrodes. Alpha attenuation was significant during the eyes-open condition in all in-ear electrodes, and it followed the structure of power spectral density plots of forehead electrodes, with the Pearson correlation coefficient of 0.92 between in-ear locations ELE (Left Ear Superior) and ERE (Right Ear Superior) and forehead locations, Fp1 and Fp2, respectively. The results indicate that in-ear EEG is an unobtrusive alternative in terms of impedance, signal properties and information content to established forehead EEG.
The European Union's aim to become climate neutral by 2050 necessitates ambitious efforts to reduce carbon emissions. Large reductions can be attained particularly in energy intensive sectors like iron and steel. In order to prevent the relocation of such industries outside the EU in the course of tightening environmental regulations, the establishment of a climate club jointly with other large emitters and alternatively the unilateral implementation of an international cross-border carbon tax mechanism are proposed. This article focuses on the latter option choosing the steel sector as an example. In particular, we investigate the financial conditions under which a European cross border mechanism is capable to protect hydrogen-based steel production routes employed in Europe against more polluting competition from abroad. By using a floor price model, we assess the competitiveness of different steel production routes in selected countries. We evaluate the climate friendliness of steel production on the basis of specific GHG emissions. In addition, we utilize an input-output price model. It enables us to assess impacts of rising cost of steel production on commodities using steel as intermediates. Our results raise concerns that a cross-border tax mechanism will not suffice to bring about competitiveness of hydrogen-based steel production in Europe because the cost tends to remain higher than the cost of steel production in e.g. China. Steel is a classic example for a good used mainly as intermediate for other products. Therefore, a cross-border tax mechanism for steel will increase the price of products produced in the EU that require steel as an input. This can in turn adversely affect competitiveness of these sectors. Hence, the effects of higher steel costs on European exports should be borne in mind and could require the cross-border adjustment mechanism to also subsidize exports.
We study the possibility to fabricate an arbitrary phase mask in a one-step laser-writing process inside the volume of an optical glass substrate. We derive the phase mask from a Gerchberg–Saxton-type algorithm as an array and create each individual phase shift using a refractive index modification of variable axial length. We realize the variable axial length by superimposing refractive index modifications induced by an ultra-short pulsed laser at different focusing depth. Each single modification is created by applying 1000 pulses with 15 μJ pulse energy at 100 kHz to a fixed spot of 25 μm diameter and the focus is then shifted axially in steps of 10 μm. With several proof-of-principle examples, we show the feasibility of our method. In particular, we identify the induced refractive index change to about a value of Δn=1.5⋅10−3. We also determine our current limitations by calculating the overlap in the form of a scalar product and we discuss possible future improvements.
The mechanical behavior of the large intestine beyond the ultimate stress has never been investigated. Stretching beyond the ultimate stress may drastically impair the tissue microstructure, which consequently weakens its healthy state functions of absorption, temporary storage, and transportation for defecation. Due to closely similar microstructure and function with humans, biaxial tensile experiments on the porcine large intestine have been performed in this study. In this paper, we report hyperelastic characterization of the large intestine based on experiments in 102 specimens. We also report the theoretical analysis of the experimental results, including an exponential damage evolution function. The fracture energies and the threshold stresses are set as damage material parameters for the longitudinal muscular, the circumferential muscular and the submucosal collagenous layers. A biaxial tensile simulation of a linear brick element has been performed to validate the applicability of the estimated material parameters. The model successfully simulates the biomechanical response of the large intestine under physiological and non-physiological loads.
Edge-based and face-based smoothed finite element methods (ES-FEM and FS-FEM, respectively) are modified versions of the finite element method allowing to achieve more accurate results and to reduce sensitivity to mesh distortion, at least for linear elements. These properties make the two methods very attractive. However, their implementation in a standard finite element code is nontrivial because it requires heavy and extensive modifications to the code architecture. In this article, we present an element-based formulation of ES-FEM and FS-FEM methods allowing to implement the two methods in a standard finite element code with no modifications to its architecture. Moreover, the element-based formulation permits to easily manage any type of element, especially in 3D models where, to the best of the authors' knowledge, only tetrahedral elements are used in FS-FEM applications found in the literature. Shape functions for non-simplex 3D elements are proposed in order to apply FS-FEM to any standard finite element.
Retinal vessels are similar to cerebral vessels in their structure and function. Moderately low oscillation frequencies of around 0.1 Hz have been reported as the driving force for paravascular drainage in gray matter in mice and are known as the frequencies of lymphatic vessels in humans. We aimed to elucidate whether retinal vessel oscillations are altered in Alzheimer's disease (AD) at the stage of dementia or mild cognitive impairment (MCI). Seventeen patients with mild-to-moderate dementia due to AD (ADD); 23 patients with MCI due to AD, and 18 cognitively healthy controls (HC) were examined using Dynamic Retinal Vessel Analyzer. Oscillatory temporal changes of retinal vessel diameters were evaluated using mathematical signal analysis. Especially at moderately low frequencies around 0.1 Hz, arterial oscillations in ADD and MCI significantly prevailed over HC oscillations and correlated with disease severity. The pronounced retinal arterial vasomotion at moderately low frequencies in the ADD and MCI groups would be compatible with the view of a compensatory upregulation of paravascular drainage in AD and strengthen the amyloid clearance hypothesis.
This study addresses a proof-of-concept experiment with a biocompatible screen-printed carbon electrode deposited onto a biocompatible and biodegradable substrate, which is made of fibroin, a protein derived from silk of the Bombyx mori silkworm. To demonstrate the sensor performance, the carbon electrode is functionalized as a glucose biosensor with the enzyme glucose oxidase and encapsulated with a silicone rubber to ensure biocompatibility of the contact wires. The carbon electrode is fabricated by means of thick-film technology including a curing step to solidify the carbon paste. The influence of the curing temperature and curing time on the electrode morphology is analyzed via scanning electron microscopy. The electrochemical characterization of the glucose biosensor is performed by amperometric/voltammetric measurements of different glucose concentrations in phosphate buffer. Herein, systematic studies at applied potentials from 500 to 1200 mV to the carbon working electrode (vs the Ag/AgCl reference electrode) allow to determine the optimal working potential. Additionally, the influence of the curing parameters on the glucose sensitivity is examined over a time period of up to 361 days. The sensor shows a negligible cross-sensitivity toward ascorbic acid, noradrenaline, and adrenaline. The developed biocompatible biosensor is highly promising for future in vivo and epidermal applications.
Although several successful applications of benchtop nuclear magnetic resonance (NMR) spectroscopy in quantitative mixture analysis exist, the possibility of calibration transfer remains mostly unexplored, especially between high- and low-field NMR. This study investigates for the first time the calibration transfer of partial least squares regressions [weight average molecular weight (Mw) of lignin] between high-field (600 MHz) NMR and benchtop NMR devices (43 and 60 MHz). For the transfer, piecewise direct standardization, calibration transfer based on canonical correlation analysis, and transfer via the extreme learning machine auto-encoder method are employed. Despite the immense resolution difference between high-field and low-field NMR instruments, the results demonstrate that the calibration transfer from high- to low-field is feasible in the case of a physical property, namely, the molecular weight, achieving validation errors close to the original calibration (down to only 1.2 times higher root mean square errors). These results introduce new perspectives for applications of benchtop NMR, in which existing calibrations from expensive high-field instruments can be transferred to cheaper benchtop instruments to economize.
NMR standardization approach that uses the 2H integral of deuterated solvent for quantitative multinuclear analysis of pharmaceuticals is described. As a proof of principle, the existing NMR procedure for the analysis of heparin products according to US Pharmacopeia monograph is extended to the determination of Na+ and Cl- content in this matrix. Quantification is performed based on the ratio of a 23Na (35Cl) NMR integral and 2H NMR signal of deuterated solvent, D2O, acquired using the specific spectrometer hardware. As an alternative, the possibility of 133Cs standardization using the addition of Cs2CO3 stock solution is shown. Validation characteristics (linearity, repeatability, sensitivity) are evaluated. A holistic NMR profiling of heparin products can now also be used for the quantitative determination of inorganic compounds in a single analytical run using a single sample. In general, the new standardization methodology provides an appealing alternative for the NMR screening of inorganic and organic components in pharmaceutical products.
Lignin is a promising renewable biopolymer being investigated worldwide as an environmentally benign substitute of fossil-based aromatic compounds, e.g. for the use as an excipient with antioxidant and antimicrobial properties in drug delivery or even as active compound. For its successful implementation into process streams, a quick, easy, and reliable method is needed for its molecular weight determination. Here we present a method using 1H spectra of benchtop as well as conventional NMR systems in combination with multivariate data analysis, to determine lignin’s molecular weight (Mw and Mn) and polydispersity index (PDI). A set of 36 organosolv lignin samples (from Miscanthus x giganteus, Paulownia tomentosa and Silphium perfoliatum) was used for the calibration and cross validation, and 17 samples were used as external validation set. Validation errors between 5.6% and 12.9% were achieved for all parameters on all NMR devices (43, 60, 500 and 600 MHz). Surprisingly, no significant difference in the performance of the benchtop and high-field devices was found. This facilitates the application of this method for determining lignin’s molecular weight in an industrial environment because of the low maintenance expenditure, small footprint, ruggedness, and low cost of permanent magnet benchtop NMR systems.
Heparin is a natural polysaccharide, which plays essential role in many biological processes. Alterations in building blocks can modify biological roles of commercial heparin products, due to significant changes in the conformation of the polymer chain. The variability structure of heparin leads to difficulty in quality control using different analytical methods, including infrared (IR) spectroscopy. In this paper molecular modelling of heparin disaccharide subunits was performed using quantum chemistry. The structural and spectral parameters of these disaccharides have been calculated using RHF/6-311G. In addition, over-sulphated chondroitin sulphate disaccharide was studied as one of the most widespread contaminants of heparin. Calculated IR spectra were analyzed with respect to specific structure parameters. IR spectroscopic fingerprint was found to be sensitive to substitution pattern of disaccharide subunits. Vibrational assignments of calculated spectra were correlated with experimental IR spectral bands of native heparin. Chemometrics was used to perform multivariate analysis of simulated spectral data.
Miniaturized electrolyte–insulator–semiconductor capacitors (EISCAPs) with ultrathin gate insulators have been studied in terms of their pH-sensitive sensor characteristics: three different EISCAP systems consisting of Al–p-Si–Ta2O5(5 nm), Al–p-Si–Si3N4(1 or 2 nm)–Ta2O5 (5 nm), and Al–p-Si–SiO2(3.6 nm)–Ta2O5(5 nm) layer structures are characterized in buffer solution with different pH values by means of capacitance–voltage and constant capacitance method. The SiO2 and Si3N4 gate insulators are deposited by rapid thermal oxidation and rapid thermal nitridation, respectively, whereas the Ta2O5 film is prepared by atomic layer deposition. All EISCAP systems have a clear pH response, favoring the stacked gate insulators SiO2–Ta2O5 when considering the overall sensor characteristics, while the Si3N4(1 nm)–Ta2O5 stack delivers the largest accumulation capacitance (due to the lower equivalent oxide thickness) and a higher steepness in the slope of the capacitance–voltage curve among the studied stacked gate insulator systems.
Virgin passive colon biomechanics and a literature review of active contraction constitutive models
(2022)
The objective of this paper is to present our findings on the biomechanical aspects of the virgin passive anisotropic hyperelasticity of the porcine colon based on equibiaxial tensile experiments. Firstly, the characterization of the intestine tissues is discussed for a nearly incompressible hyperelastic fiber-reinforced Holzapfel–Gasser–Ogden constitutive model in virgin passive loading conditions. The stability of the evaluated material parameters is checked for the polyconvexity of the adopted strain energy function using positive eigenvalue constraints of the Hessian matrix with MATLAB. The constitutive material description of the intestine with two collagen fibers in the submucosal and muscular layer each has been implemented in the FORTRAN platform of the commercial finite element software LS-DYNA, and two equibiaxial tensile simulations are presented to validate the results with the optical strain images obtained from the experiments. Furthermore, this paper also reviews the existing models of the active smooth muscle cells, but these models have not been computationally studied here. The review part shows that the constitutive models originally developed for the active contraction of skeletal muscle based on Hill’s three-element model, Murphy’s four-state cross-bridge chemical kinetic model and Huxley’s sliding-filament hypothesis, which are mainly used for arteries, are appropriate for numerical contraction numerical analysis of the large intestine.
Unsteady shallow meandering flows in rectangular reservoirs: a modal analysis of URANS modelling
(2022)
Shallow flows are common in natural and human-made environments. Even for simple rectangular shallow reservoirs, recent laboratory experiments show that the developing flow fields are particularly complex, involving large-scale turbulent structures. For specific combinations of reservoir size and hydraulic conditions, a meandering jet can be observed. While some aspects of this pseudo-2D flow pattern can be reproduced using a 2D numerical model, new 3D simulations, based on the unsteady Reynolds-Averaged Navier-Stokes equations, show consistent advantages as presented herein. A Proper Orthogonal Decomposition was used to characterize the four most energetic modes of the meandering jet at the free surface level, allowing comparison against experimental data and 2D (depth-averaged) numerical results. Three different isotropic eddy viscosity models (RNG k-ε, k-ε, k-ω) were tested. The 3D models accurately predicted the frequency of the modes, whereas the amplitudes of the modes and associated energy were damped for the friction-dominant cases and augmented for non-frictional ones. The performance of the three turbulence models remained essentially similar, with slightly better predictions by RNG k-ε model in the case with the highest Reynolds number. Finally, the Q-criterion was used to identify vortices and study their dynamics, assisting on the identification of the differences between: i) the three-dimensional phenomenon (here reproduced), ii) its two-dimensional footprint in the free surface (experimental observations) and iii) the depth-averaged case (represented by 2D models).
This study reviews the practice of brake tests in freight railways, which is time consuming and not suitable to detect certain failure types. Public incident reports are analysed to derive a reasonable brake test hardware and communication architecture, which aims to provide automatic brake tests at lower cost than current solutions. The proposed solutions relies exclusively on brake pipe and brake cylinder pressure sensors, a brake release position switch as well as radio communication via standard protocols. The approach is embedded in the Wagon 4.0 concept, which is a holistic approach to a smart freight wagon. The reduction of manual processes yields a strong incentive due to high savings in manual
labour and increased productivity.
Sleep spindles are neurophysiological phenomena that appear to be linked to memory formation and other functions of the central nervous system, and that can be observed in electroencephalographic recordings (EEG) during sleep. Manually identified spindle annotations in EEG recordings suffer from substantial intra- and inter-rater variability, even if raters have been highly trained, which reduces the reliability of spindle measures as a research and diagnostic tool. The Massive Online Data Annotation (MODA) project has recently addressed this problem by forming a consensus from multiple such rating experts, thus providing a corpus of spindle annotations of enhanced quality. Based on this dataset, we present a U-Net-type deep neural network model to automatically detect sleep spindles. Our model’s performance exceeds that of the state-of-the-art detector and of most experts in the MODA dataset. We observed improved detection accuracy in subjects of all ages, including older individuals whose spindles are particularly challenging to detect reliably. Our results underline the potential of automated methods to do repetitive cumbersome tasks with super-human performance.
Virtual Reality (VR) offers novel possibilities for remote training regardless of the availability of the actual equipment, the presence of specialists, and the training locations. Research shows that training environments that adapt to users' preferences and performance can promote more effective learning. However, the observed results can hardly be traced back to specific adaptive measures but the whole new training approach. This study analyzes the effects of a combined point and leveling VR-based gamification system on assembly training targeting specific training outcomes and users' motivations. The Gamified-VR-Group with 26 subjects received the gamified training, and the Non-Gamified-VR-Group with 27 subjects received the alternative without gamified elements. Both groups conducted their VR training at least three times before assembling the actual structure. The study found that a level system that gradually increases the difficulty and error probability in VR can significantly lower real-world error rates, self-corrections, and support usages. According to our study, a high error occurrence at the highest training level reduced the Gamified-VR-Group's feeling of competence compared to the Non-Gamified-VR-Group, but at the same time also led to lower error probabilities in real-life. It is concluded that a level system with a variable task difficulty should be combined with carefully balanced positive and negative feedback messages. This way, better learning results, and an improved self-evaluation can be achieved while not causing significant impacts on the participants' feeling of competence.