Refine
Year of publication
- 2022 (233) (remove)
Institute
- Fachbereich Gestaltung (61)
- Fachbereich Medizintechnik und Technomathematik (46)
- Fachbereich Energietechnik (34)
- IfB - Institut für Bioengineering (27)
- ECSM European Center for Sustainable Mobility (22)
- Fachbereich Elektrotechnik und Informationstechnik (19)
- Fachbereich Chemie und Biotechnologie (17)
- Solar-Institut Jülich (15)
- Fachbereich Luft- und Raumfahrttechnik (14)
- Fachbereich Wirtschaftswissenschaften (13)
Has Fulltext
- no (233) (remove)
Language
- English (133)
- German (99)
- Multiple languages (1)
Document Type
- Article (81)
- Conference Proceeding (48)
- Bachelor Thesis (47)
- Part of a Book (30)
- Book (8)
- Master's Thesis (8)
- Conference: Meeting Abstract (5)
- Other (2)
- Report (2)
- Conference Poster (1)
Keywords
- App (3)
- Concentrated solar power (3)
- Corporate Design (3)
- Energy storage (3)
- Erscheinungsbild (3)
- Fotografie (3)
- Hybrid energy system (3)
- Illustration (3)
- Kurzfilm (3)
- Plastik (3)
- Achtsamkeit (2)
- Biocomposites (2)
- Chemometrics (2)
- Digital Twin (2)
- Earthquake (2)
- Electricity generation (2)
- Emotional (2)
- Gamification (2)
- Geschichte (2)
- Heparin (2)
- IO-Link (2)
- Informationsdesign (2)
- Integration (2)
- Interaktiv (2)
- Kampagne (2)
- Möbeldesign (2)
- NMR spectroscopy (2)
- Natural fibres (2)
- Polymer-matrix composites (2)
- Power plants (2)
- Produktdesign (2)
- Redesign (2)
- Seismic design (2)
- Seismic loading (2)
- Solar thermal technologies (2)
- Stress concentrations (2)
- Textil (2)
- Urban (2)
- damage (2)
- nachhaltig (2)
- seismic design (2)
- 10BASE-T1L (1)
- 3D (1)
- Additive Manufacturing (1)
- Additive manufacturing (1)
- Alnatura (1)
- Alzheimer's disease (1)
- Analogue Environments (1)
- Angle Sensor (1)
- Animation (1)
- Anschlüsse an Stahlbeton (1)
- Aquarell (1)
- Architektur (1)
- Arduino (1)
- Artificial Intelligence (1)
- Artificial intelligence (1)
- Assembly (1)
- Asset Administration Shell (1)
- Associated liquids (1)
- Auffällig (1)
- Aufklärend (1)
- Augsburg (1)
- Ausstellungsdesign (1)
- Authentizität (1)
- Automated driving (1)
- Automotive application (1)
- BIM (1)
- BMW AG (1)
- Bahnen (1)
- Basisisolierung (1)
- Bauwerksüberwachung (1)
- Behaviour factor q (1)
- Behälterbau (1)
- Bemessung (1)
- Benchmark (1)
- Betroffenenrechte (1)
- Binder Jetting (1)
- Bio-Lebensmittelmarke (1)
- Biomass (1)
- Biomechanical simulation (1)
- Blender (1)
- Blindheit (1)
- Bootstrapping (1)
- Boundary integral equations (1)
- Brandschutz (1)
- Brückenbau (1)
- Buch (1)
- Buchgestaltung (1)
- Bulk (1)
- Bundesrepublik Deutschland (1)
- CAV (1)
- Camera system (1)
- Caravaning (1)
- Case Study (1)
- Categorial variable (1)
- Cementoblast (1)
- Central receiver power plant (1)
- Central receiver system (1)
- Ceramics (1)
- Challenges (1)
- Chance constrained programming (1)
- Change management (1)
- Civil engineering (1)
- Clinical decision support systems (1)
- Cloud passages (1)
- Clustering (1)
- Collective risk model (1)
- Comic (1)
- Compression (1)
- Computerspiel (1)
- Concentrated solar collector (1)
- Concentrated systems (1)
- Concept Design (1)
- Concomitant (1)
- Conductive boundary condition (1)
- Conpot (1)
- Control optimization (1)
- Crude heparin (1)
- Cryobot (1)
- Cybersecurity (1)
- Cybersicherheit (1)
- DIN EN 1996 (1)
- DNI forecast (1)
- DNI forecasting (1)
- Datenschutz (1)
- Datenschutzfolgenabschätzung (1)
- Datenvisualisierung (1)
- Decoupling (1)
- Deep Learning (1)
- Designprogramme (1)
- Designstuhl (1)
- Designtheorie (1)
- Diashow (1)
- Didaktik (1)
- Digital Twin Evolution (1)
- Digital Twins (1)
- Digital start-up (1)
- Digitalisierung (1)
- Direct normal irradiance forecast (1)
- Directed Energy Deposition (1)
- Diversity management (1)
- Diversität (1)
- Drinfeld modules (1)
- Dynamic simulation (1)
- Dystopie (1)
- EN 1998-4 (1)
- ES-FEM (1)
- ESHM20, industrial facilities (1)
- EU-Datenschutzgrundverordnung (1)
- Editorial Design (1)
- Eiche (1)
- Eingespannte Stützen und Träger (1)
- Einkauf (1)
- Einspanntiefen (1)
- Electrical Flight (1)
- Elegant (1)
- Elektroenzephalographie (1)
- Empirical process (1)
- Energiekonzept (1)
- Energy system (1)
- Entrepreneurship (1)
- Environment (1)
- Erasmus+ United (1)
- Erweiterung (1)
- Ethernet (1)
- Evolution (1)
- Evolution of damage (1)
- Explainability (1)
- Extension fracture (1)
- Extension strain criterion (1)
- FGF23 (1)
- FPGA (1)
- FS-FEM (1)
- Fahrrad (1)
- Fahrzeug (1)
- Feature selection (1)
- Festigkeitslehre (1)
- Festival (1)
- Feuchtigkeit (1)
- Field device (1)
- Filmproduktion (1)
- Finite element analysis (1)
- Finite element analysis (FEA) (1)
- Fitnesstraining (1)
- Flamme (1)
- Flight Mechanics (1)
- Flight Tests (1)
- Flucht (1)
- Food processor (1)
- Forces (1)
- Fotodokumentation (1)
- Fracture classification (1)
- Fracture configuration (1)
- Fracture simulation (1)
- Freizeitsport (1)
- Freundschaft (1)
- Frisches Gemüse (1)
- Fühlen (1)
- Garderobe (1)
- Gas turbine (1)
- Gastronomie (1)
- Geflüchtete (1)
- Genetic algorithm (1)
- Geotechnik (1)
- Gesamtwassergehalt (1)
- Gesellschaft (1)
- Gesellschaftskritik (1)
- Gestaltung (1)
- Gesundheit (1)
- Gesundheitskompetenz (1)
- Global change (1)
- Grafiknovelle (1)
- Grounded Theory (1)
- Guidelines (1)
- HLS-GER 1 (1)
- Hacker (1)
- Haemodialysis (1)
- Handbike (1)
- Hazard assessment (1)
- Heliostat Field Calibration (1)
- Heliostats (1)
- Herz (1)
- Herzinusffizienz (1)
- Heterostructure (1)
- Higher derivations (1)
- Historisch (1)
- Home-Entertainment-System (1)
- Hugo Junkers (1)
- Humidity (1)
- Hybrid Work (1)
- Hybridization (1)
- Hydroponik (1)
- Höhlenmalerei (1)
- ICS (1)
- INSYSME (1)
- IR spectroscopy (1)
- IT (1)
- IT-Sicherheit (1)
- Ice Melting (1)
- Icy Moons (1)
- Image Reconstruction (1)
- Imaging (1)
- In-plane load (1)
- In-plane performance, isolation (1)
- Inclusive Design (1)
- Inclusive work climate (1)
- Incremental Encoder (1)
- Independence test (1)
- Individualisierbarkeit (1)
- Industrial Communication (1)
- Industrial facilities (1)
- Industrie Design (1)
- Industriedesign (1)
- Industry 4.0 (1)
- Infill wall design (1)
- Inflight Regeneration, Recuperation (1)
- Information Extraction (1)
- Informationssicherheit (1)
- Informationssicherheitsmanagement (1)
- Informationstechnik (1)
- Informationsverarbeitung (1)
- Informativ (1)
- Inneneinrichtung (1)
- Inorganic ions (1)
- Instructional design (1)
- Interaction (1)
- Interaktion (1)
- Interfacedesign (1)
- Interior-System,Reisewagen (1)
- Internationales Recht / Europarecht (1)
- Interstellar objects (1)
- Inverse spectral problem (1)
- Ions (1)
- Julius Erasmus (1)
- Jungpaläolithikum (1)
- Justice (1)
- Kalman filter (1)
- Karte (1)
- Kindergarten (1)
- Kindermöbel (1)
- Kleidung (1)
- Kleinkinder (1)
- Klotho (1)
- Knowledge Transfer (1)
- Koexistenz (1)
- Konsumverhalten (1)
- Kritische Kartographie (1)
- Kultur (1)
- Kunst (1)
- L-PBF (1)
- LGBTQI (1)
- LPBF (1)
- Lagerfeuer (1)
- Landslide tsunamis (1)
- Large scale tests (1)
- Laser-Powder Bed Fusion (1)
- Lastenrad (1)
- Layout (1)
- Lebensmittel (1)
- Level system (1)
- Lidar (1)
- Liebe (1)
- Lieferservice (1)
- Liefersystem (1)
- Limit analysis (1)
- Linear elastic analysis (1)
- Literatur (1)
- Machine Learning (1)
- Machine learning (1)
- Malaysian automotive industry (1)
- Mapping (1)
- Markengestaltung (1)
- Markenstrategie (1)
- Marketing (1)
- Marktfähigkeit (1)
- Masonry infill (1)
- Massenproduktion (1)
- Mauerwerksgebäude (1)
- Measurement models (1)
- Measurement uncertainty (1)
- Measuring instruments (1)
- Mechanotransduction (1)
- Medical AI (1)
- Medizin (1)
- Melting Efficiency (1)
- Melting Performance (1)
- Melting Probe (1)
- Metascintillator (1)
- Microcirculation (1)
- Migration (1)
- Migrationsgruppe (1)
- Mikroplastik (1)
- Mild cognitive impairment (1)
- Minimalistisch (1)
- Missions (1)
- Mixed integer linear programming (MILP) (1)
- Mobilität (1)
- Mobiltelefon (1)
- Mode (1)
- Modeindustrie (1)
- Modellieren (1)
- Modelling (1)
- Modern constructions (1)
- Modular (1)
- Modularität (1)
- Mohr–Coulomb criterion (1)
- Molecular modelling (1)
- Molecular weight determination (1)
- Molten salt receiver (1)
- Molten salt receiver system (1)
- Molten salt receiver system, (1)
- Molten salt solar tower (1)
- Momentenverteilung (1)
- Monitoring (1)
- Monte Carlo Tree Search (1)
- Morphing (1)
- Multi-agent Systems (1)
- Multifunktional (1)
- Multiple TOF kernels (1)
- Museum (1)
- Museumsdesign (1)
- Musik (1)
- Myocardial infarction and cardiac death (1)
- Möbel (1)
- NMR (1)
- Nachhaltigkeit (1)
- Natur (1)
- Natural Language Processing (1)
- New York (1)
- Niacin (1)
- Normative standards (1)
- Nowcasting (1)
- Numerical modelling (1)
- Nutzeroberfläche (1)
- Nutztier (1)
- Nutzungsverhalten (1)
- Ocean Worlds (1)
- Ordnung (1)
- Organizational culture (1)
- Out-of-plane load (1)
- Outdoortraining (1)
- Overland flow (1)
- PEM fuel cells (1)
- PLS-regression (1)
- PTC (1)
- PTH (1)
- Packaging Design (1)
- Parabolic trough collector (1)
- Paralympic sport (1)
- Perception (1)
- Periods (1)
- Philosophie (1)
- Phosphate (1)
- Photovoltaics (1)
- Physikalische Chemie (1)
- Pinsel (1)
- Planeten (1)
- Plastikverpackungen (1)
- Portrait (1)
- Portraits (1)
- Position Encoder (1)
- Postkolonialismus (1)
- Powder Material (1)
- Power conversion systems (1)
- Probability distribution mapping (1)
- Process mining (1)
- Process prediction (1)
- Profile Extraction (1)
- Propeller Aerodynamics (1)
- Proper Orthogonal Decomposition (1)
- Proximal humerus fracture (1)
- Psychiatrische Biomarker (1)
- Psychological concepts (1)
- Pulsations (1)
- Q-criterion (1)
- Quadrocopter (1)
- Quality control (1)
- Quantum Computing (1)
- Quantum Machine Learning (1)
- Quantum chemistry (1)
- Rahmentragwirkung (1)
- Rapid-prototyping (1)
- Rechtsgebiet (1)
- Redewendungen (1)
- Reinforced concrete frame (1)
- Reise (1)
- Reliability of structures (1)
- Remote Work (1)
- Renewable energy (1)
- Restaurantmöbel (1)
- Restauranttisch (1)
- Restauratoren (1)
- Restaurierung (1)
- Retinal vessel analysis (1)
- Retinal vessels (1)
- Riboflavin (1)
- Rohstoffgewinnung (1)
- Rotational Encoder (1)
- Rotator cuff (1)
- Runen (1)
- Runologie (1)
- S-FEM (1)
- SME (1)
- Schlaf Fantasie (1)
- Schlafspindeldetektion (1)
- Schrift (1)
- Schriftgestaltung (1)
- Schriftsysteme (1)
- Schuld (1)
- Seheinschränkung (1)
- Self-driving (1)
- Sensor (1)
- Sensors (1)
- Shakedown analysis (1)
- Shoulder (1)
- Social Cocooning (1)
- Softwarentwicklung (1)
- Solar concentration (1)
- Solar dish (1)
- Solar irradiance (1)
- Solitary waves (1)
- Soziale Medien (1)
- Sphärenharmonie (1)
- Sphärenmusik (1)
- Spiel (1)
- Sprachsteuerung (1)
- Sprachvielfalt (1)
- Sprichwörter (1)
- Stahlprofile (1)
- Standardization (1)
- Star design (1)
- Steinzeit (1)
- Steuerbar (1)
- Stochastic programming (1)
- Stress (1)
- Structural design (1)
- Structural health monitoring (1)
- Städte (1)
- Success Factors (1)
- Support System (1)
- Szenografie (1)
- TIM (1)
- TOF PET (1)
- Tanks (1)
- Tante Ju (1)
- Technikmuseum (1)
- Telekommunikation-Telemedien-Datenschutzgesetz (1)
- Telemonitoring (1)
- Tension (1)
- Text Mining (1)
- Thermal Energy Storage (1)
- Thiamine (1)
- Tierschutz (1)
- Time-series aggregation (1)
- Tobacco mosaic virus (1)
- Training (1)
- Trajectories (1)
- Transcendence (1)
- Transgender (1)
- Transient flux distribution (1)
- Transmission eigenvalues (1)
- Transparenz (1)
- Traum (1)
- Two-phase modelling (1)
- Typical periods (1)
- Typographie (1)
- UAV (1)
- USP (1)
- UTeM Engineering Knowledge Transfer Unit (1)
- UX/UI Design (1)
- Uncertainty analysis (1)
- Uniform (1)
- Unmanned aerial vehicle (1)
- Unreinforced masonry buildings (1)
- Unterhaltungsgegenstände (1)
- Unternehmensbekleidung (1)
- Urbanes Leben (1)
- User study (1)
- Vasomotions (1)
- Veranstaltung (1)
- Verdunstungskälte (1)
- Verpackungsmaterial (1)
- Vertrauen (1)
- Virtual reality (1)
- Visual impairment (1)
- Visualisierung (1)
- Vitamin A (1)
- Vitamin B (1)
- Vitamin D (1)
- Vossenack (1)
- WW2 (1)
- Wand-Decken-Interaktion (1)
- Weben (1)
- Wegweisend (1)
- Wegwerfgesellschaft (1)
- Weiblicher Blick (1)
- Wellblech (1)
- Weltall (1)
- Weltraum (1)
- Wetterwechsel (1)
- Wiegand Effect (1)
- Wildnis (1)
- Window opening (1)
- Wissenschaft (1)
- Work-life-blending (1)
- Zeitzeugen (1)
- Zukunft (1)
- Zukunftsstädte (1)
- acetoin (1)
- additive manufacturing (1)
- adipose-derived stromal cells (ASCs) (1)
- aminooctanethiol (1)
- anaesthetic complications (1)
- anisotropy (1)
- aortic perfusion (1)
- aseptic parameters (1)
- automated vehicles (1)
- aviation application (1)
- bacterial cellulose (1)
- batteries and fuel cells (1)
- behaviour factor q (1)
- bi-enzyme biosensor (1)
- biaxial tensile experiment (1)
- biopotential electrodes (1)
- biosensors (1)
- body imaging at 7 T MRI (1)
- bootstrap (1)
- borefields (1)
- borehole disposal (1)
- bullying (1)
- capacitive field-effect biosensor (1)
- capacitive field-effect sensor (1)
- capacitive model (1)
- cell aerosolization (1)
- cell atomization (1)
- cerebral small vessel disease (1)
- chance constrained programming (1)
- coculture (1)
- cognitive impairment (1)
- coherent structures (1)
- combustor development (1)
- competence developing games (1)
- computational fluid dynamics analysis (1)
- connected automated vehicles (1)
- constitutive modeling (1)
- control system (1)
- correlation (1)
- crystallization (1)
- cyber physical production system (1)
- cyber-physical production system (1)
- cybersecurity (1)
- dental trauma (1)
- dialysis (1)
- difficult airway (1)
- digital (1)
- digital shadow (1)
- digital teaching (1)
- digital twin (1)
- digitale Lehre (1)
- disposal facility (1)
- distorted element (1)
- double-lumen tube intubation (1)
- electrolyte-insulator-semiconductor capacitors (1)
- electrospinning (1)
- emission (1)
- endoluminal (1)
- energy (1)
- energy concept (1)
- enzyme immobilization (1)
- enzyme-logic gate (1)
- exopolysaccharides (1)
- experimental evaluation (1)
- extracorporeal membrane oxygenation (1)
- eye movement modelling examples (1)
- fibers (1)
- field-effect sensor (1)
- force generation (1)
- forehead EEG (1)
- frequency mixing magnetic detection (1)
- fuel cell systems (1)
- fuels (1)
- fused filament fabrication (1)
- gaseous hydrogen peroxide (1)
- geological disposal (1)
- geotechnical engineering (1)
- geothermal (1)
- gold nanoparticles (1)
- graphicnovel (1)
- health management systems (1)
- high-intensity exercise (1)
- historisches Drama (1)
- honeynet (1)
- honeypot (1)
- human digital shadow (1)
- human factors (1)
- human-machine interface (1)
- hydraulic modelling (1)
- hydrogen (1)
- hyperelastic (1)
- ignition (1)
- impedance spectroscopy (1)
- in-ear EEG (1)
- industrial gas turbine (1)
- interior design (1)
- intim (1)
- irradiation (1)
- künstliche Intelligenz (1)
- langsam (1)
- lessons learned (1)
- limit analysis (1)
- linear elastic analysis; (1)
- ländlich (1)
- magnetic nanoparticles (1)
- magnetic sensors (1)
- metrological characterization (1)
- microplasma (1)
- microwave (MW) plasma (1)
- model performance (1)
- modern constructions (1)
- multi-sensing platform (1)
- muscle fascicle behavior (1)
- nanoparticle coverage (1)
- non-simplex S-FEM elements (1)
- nuclear waste (1)
- office design (1)
- passive inter-modulation (1)
- penicillinase (1)
- performance testing (1)
- plasma jet (1)
- policy recommendations (1)
- polyetheretherketone (1)
- porous materials (1)
- power integrity (1)
- prebiotic (1)
- pullulan (1)
- rapid tooling (1)
- recommendations for actions (1)
- regional (1)
- reliability of structures (1)
- requirements (1)
- retention time (1)
- retinal vessels (1)
- sEMG (1)
- safety control (1)
- schnell (1)
- schwarz-weiß (1)
- seismic hazard (1)
- selbstorganisiertes Training (1)
- shakedown analysis (1)
- signal integrity (1)
- simulation (1)
- sizing (1)
- smooth muscle contraction (1)
- software engineering (1)
- soziale Integration (1)
- spatial design (1)
- spore kill rate (1)
- steel profiles (1)
- sterility (1)
- stochastic programming (1)
- strain energy function (1)
- survival (1)
- systematic literature review (1)
- t-modules (1)
- technology transfer (1)
- tendon rupture (1)
- thermal dose (1)
- tissue temperature (1)
- tobacco mosaic virus (TMV) (1)
- transmit antenna arrays (1)
- tri-lineage differentiation (1)
- twin-fluid atomizer (1)
- ultrasound imaging (1)
- unreinforced masonry buildings (1)
- unverpackt (1)
- urease (1)
- video learning (1)
- videolaryngoscopy (1)
- virgin passive (1)
- viscoelasticity (1)
- wahre Begebenheit (1)
- walking gait (1)
- zweiter Weltkrieg (1)
- · Psychiatrische Erkrankungen/Diagnostik (1)
- Ökologie (1)
- Ökonomie (1)
In this study, an online multi-sensing platform was engineered to simultaneously evaluate various process parameters of food package sterilization using gaseous hydrogen peroxide (H₂O₂). The platform enabled the validation of critical aseptic parameters. In parallel, one series of microbiological count reduction tests was performed using highly resistant spores of B. atrophaeus DSM 675 to act as the reference method for sterility validation. By means of the multi-sensing platform together with microbiological tests, we examined sterilization process parameters to define the most effective conditions with regards to the highest spore kill rate necessary for aseptic packaging. As these parameters are mutually associated, a correlation between different factors was elaborated. The resulting correlation indicated the need for specific conditions regarding the applied H₂O₂ gas temperature, the gas flow and concentration, the relative humidity and the exposure time. Finally, the novel multi-sensing platform together with the mobile electronic readout setup allowed for the online and on-site monitoring of the sterilization process, selecting the best conditions for sterility and, at the same time, reducing the use of the time-consuming and costly microbiological tests that are currently used in the food package industry.
In this study, the performance of an integrated body-imaging array for 7 T with 32 radiofrequency (RF) channels under consideration of local specific absorption rate (SAR), tissue temperature, and thermal dose limits was evaluated and the imaging performance was compared with a clinical 3 T body coil.
Thirty-two transmit elements were placed in three rings between the bore liner and RF shield of the gradient coil. Slice-selective RF pulse optimizations for B1 shimming and spokes were performed for differently oriented slices in the body under consideration of realistic constraints for power and local SAR. To improve the B1+ homogeneity, safety assessments based on temperature and thermal dose were performed to possibly allow for higher input power for the pulse optimization than permissible with SAR limits.
The results showed that using two spokes, the 7 T array outperformed the 3 T birdcage in all the considered regions of interest. However, a significantly higher SAR or lower duty cycle at 7 T is necessary in some cases to achieve similar B1+ homogeneity as at 3 T. The homogeneity in up to 50 cm-long coronal slices can particularly benefit from the high RF shim performance provided by the 32 RF channels. The thermal dose approach increases the allowable input power and the corresponding local SAR, in one example up to 100 W/kg, without limiting the exposure time necessary for an MR examination.
In conclusion, the integrated antenna array at 7 T enables a clinical workflow for body imaging and comparable imaging performance to a conventional 3 T clinical body coil.
Objective
Hemodialysis patients show an approximately threefold higher prevalence of cognitive impairment compared to the age-matched general population. Impaired microcirculatory function is one of the assumed causes. Dynamic retinal vessel analysis is a quantitative method for measuring neurovascular coupling and microvascular endothelial function. We hypothesize that cognitive impairment is associated with altered microcirculation of retinal vessels.
Methods
152 chronic hemodialysis patients underwent cognitive testing using the Montreal Cognitive Assessment. Retinal microcirculation was assessed by Dynamic Retinal Vessel Analysis, which carries out an examination recording retinal vessels' reaction to a flicker light stimulus under standardized conditions.
Results
In unadjusted as well as in adjusted linear regression analyses a significant association between the visuospatial executive function domain score of the Montreal Cognitive Assessment and the maximum arteriolar dilation as response of retinal arterioles to the flicker light stimulation was obtained.
Conclusion
This is the first study determining retinal microvascular function as surrogate for cerebral microvascular function and cognition in hemodialysis patients. The relationship between impairment in executive function and reduced arteriolar reaction to flicker light stimulation supports the involvement of cerebral small vessel disease as contributing factor for the development of cognitive impairment in this patient population and might be a target for noninvasive disease monitoring and therapeutic intervention.
Mit dem Beitrag des Teams der FH Aachen zum SDE 21/22 wird im Projekt LOCAL+ ein kreislauffähiger Holzmodulbau mit einem innovativen Wohnraumkonzept geplant und umgesetzt. Ziel dieses Konzeptes ist die Verringerung des stetig steigenden Wohnflächenbedarfs durch ein Raum-in-Raum Konzept. Gebäudetechnisch wird in dem Projekt nicht nur das Einzelgebäude betrachtet, sondern unter Berücksichtigung des Gebäudebestandes wird für das Quartier ein innovatives und nachhaltiges Energiekonzept entwickelt. Ein zentrales Wasserstoffsystem ist für ein Quartier geplant, um den Stromverbrauch aus dem Netz im Winter zu reduzieren. Zentraler Bestandteil des TGA-Konzepts ist ein unterirdischer Eisspeicher, eine PVT und eine Wärmepumpe mit intelligenter Regelstrategie. Ein Teil des neuen Gebäudes (Design Challenge DC) wird in Wuppertal als Hausdemonstrationseinheit (HDU) präsentiert. Eine hygrothermische Simulation der HDU wurde mit der WUFI-Software durchgeführt. Da im Innenraum Lehmmodule und -platten als Feuchtigkeitspuffer verwendet werden, spielen die Themen Feuchtigkeit, Holzfäule und Schimmelwachstum eine wichtige Rolle.
Carbon nanofiber nonwovens represent a powerful class of materials with prospective application in filtration technology or as electrodes with high surface area in batteries, fuel cells, and supercapacitors. While new precursor-to-carbon conversion processes have been explored to overcome productivity restrictions for carbon fiber tows, alternatives for the two-step thermal conversion of polyacrylonitrile precursors into carbon fiber nonwovens are absent. In this work, we develop a continuous roll-to-roll stabilization process using an atmospheric pressure microwave plasma jet. We explore the influence of various plasma-jet parameters on the morphology of the nonwoven and compare the stabilized nonwoven to thermally stabilized samples using scanning electron microscopy, differential scanning calorimetry, and infrared spectroscopy. We show that stabilization with a non-equilibrium plasma-jet can be twice as productive as the conventional thermal stabilization in a convection furnace, while producing electrodes of comparable electrochemical performance.
Frequency mixing magnetic detection (FMMD) has been explored for its applications in fields of magnetic biosensing, multiplex detection of magnetic nanoparticles (MNP) and the determination of core size distribution of MNP samples. Such applications rely on the application of a static offset magnetic field, which is generated traditionally with an electromagnet. Such a setup requires a current source, as well as passive or active cooling strategies, which directly sets a limitation based on the portability aspect that is desired for point of care (POC) monitoring applications. In this work, a measurement head is introduced that involves the utilization of two ring-shaped permanent magnets to generate a static offset magnetic field. A steel cylinder in the ring bores homogenizes the field. By variation of the distance between the ring magnets and of the thickness of the steel cylinder, the magnitude of the magnetic field at the sample position can be adjusted. Furthermore, the measurement setup is compared to the electromagnet offset module based on measured signals and temperature behavior.
Nanoparticles are recognized as highly attractive tunable materials for designing field-effect biosensors with enhanced performance. In this work, we present a theoretical model for electrolyte-insulator-semiconductor capacitors (EISCAP) decorated with ligand-stabilized charged gold nanoparticles. The charged AuNPs are taken into account as additional, nanometer-sized local gates. The capacitance-voltage (C–V) curves and constant-capacitance (ConCap) signals of the AuNP-decorated EISCAPs have been simulated. The impact of the AuNP coverage on the shift of the C–V curves and the ConCap signals was also studied experimentally on Al–p-Si–SiO₂ EISCAPs decorated with positively charged aminooctanethiol-capped AuNPs. In addition, the surface of the EISCAPs, modified with AuNPs, was characterized by scanning electron microscopy for different immobilization times of the nanoparticles.
This work introduces a novel method for the detection of H₂O₂ vapor/aerosol of low concentrations, which is mainly applied in the sterilization of equipment in medical industry. Interdigitated electrode (IDE) structures have been fabricated by means of microfabrication techniques. A differential setup of IDEs was prepared, containing an active sensor element (active IDE) and a passive sensor element (passive IDE), where the former was immobilized with an enzymatic membrane of horseradish peroxidase that is selective towards H₂O₂. Changes in the IDEs’ capacitance values (active sensor element versus passive sensor element) under H₂O₂ vapor/aerosol atmosphere proved the detection in the concentration range up to 630 ppm with a fast response time (<60 s). The influence of relative humidity was also tested with regard to the sensor signal, showing no cross-sensitivity. The repeatability assessment of the IDE biosensors confirmed their stable capacitive signal in eight subsequent cycles of exposure to H₂O₂ vapor/aerosol. Room-temperature detection of H₂O₂ vapor/aerosol with such miniaturized biosensors will allow a future three-dimensional, flexible mapping of aseptic chambers and help to evaluate sterilization assurance in medical industry.
Atmospheric pressure plasma-jet treatment of PAN-nonwovens—carbonization of nanofiber electrodes
(2022)
Carbon nanofibers are produced from dielectric polymer precursors such as polyacrylonitrile (PAN). Carbonized nanofiber nonwovens show high surface area and good electrical conductivity, rendering these fiber materials interesting for application as electrodes in batteries, fuel cells, and supercapacitors. However, thermal processing is slow and costly, which is why new processing techniques have been explored for carbon fiber tows. Alternatives for the conversion of PAN-precursors into carbon fiber nonwovens are scarce. Here, we utilize an atmospheric pressure plasma jet to conduct carbonization of stabilized PAN nanofiber nonwovens. We explore the influence of various processing parameters on the conductivity and degree of carbonization of the converted nanofiber material. The precursor fibers are converted by plasma-jet treatment to carbon fiber nonwovens within seconds, by which they develop a rough surface making subsequent surface activation processes obsolete. The resulting carbon nanofiber nonwovens are applied as supercapacitor electrodes and examined by cyclic voltammetry and impedance spectroscopy. Nonwovens that are carbonized within 60 s show capacitances of up to 5 F g⁻¹.