Refine
Year of publication
Institute
- Fachbereich Medizintechnik und Technomathematik (1936)
- Fachbereich Elektrotechnik und Informationstechnik (1150)
- Fachbereich Wirtschaftswissenschaften (1121)
- Fachbereich Energietechnik (1067)
- Fachbereich Chemie und Biotechnologie (898)
- Fachbereich Maschinenbau und Mechatronik (813)
- Fachbereich Luft- und Raumfahrttechnik (769)
- Fachbereich Bauingenieurwesen (664)
- IfB - Institut für Bioengineering (629)
- INB - Institut für Nano- und Biotechnologien (586)
- Fachbereich Gestaltung (348)
- Solar-Institut Jülich (335)
- Fachbereich Architektur (186)
- ECSM European Center for Sustainable Mobility (122)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (66)
- Nowum-Energy (65)
- ZHQ - Bereich Hochschuldidaktik und Evaluation (62)
- Institut fuer Angewandte Polymerchemie (36)
- Sonstiges (24)
- IBB - Institut für Baustoffe und Baukonstruktionen (21)
- Kommission für Forschung und Entwicklung (20)
- Freshman Institute (19)
- Verwaltung (11)
- Arbeitsstelle fuer Hochschuldidaktik und Studienberatung (4)
- FH Aachen (4)
- IMP - Institut für Mikrowellen- und Plasmatechnik (4)
- IaAM - Institut für angewandte Automation und Mechatronik (4)
- Kommission für Planung und Finanzen (2)
- Senat (2)
- Datenverarbeitungszentrale (1)
- Digitalisierung in Studium & Lehre (1)
Has Fulltext
- no (9335) (remove)
Language
Document Type
- Article (5534)
- Conference Proceeding (1422)
- Book (1062)
- Part of a Book (567)
- Patent (177)
- Bachelor Thesis (169)
- Report (83)
- Doctoral Thesis (82)
- Conference: Meeting Abstract (76)
- Other (67)
Keywords
- Illustration (10)
- Nachhaltigkeit (10)
- Corporate Design (9)
- Erscheinungsbild (8)
- Gamification (8)
- Redesign (7)
- Animation (6)
- Datenschutz (6)
- Deutschland (6)
- Digitalisierung (6)
Superparamagnetic iron oxide nanoparticles (SPION) are extensively used for magnetic resonance imaging (MRI) and magnetic particle imaging (MPI), as well as for magnetic fluid hyperthermia (MFH). We here describe a sequential centrifugation protocol to obtain SPION with well-defined sizes from a polydisperse SPION starting formulation, synthesized using the routinely employed co-precipitation technique. Transmission electron microscopy, dynamic light scattering and nanoparticle tracking analyses show that the SPION fractions obtained upon size-isolation are well-defined and almost monodisperse. MRI, MPI and MFH analyses demonstrate improved imaging and hyperthermia performance for size-isolated SPION as compared to the polydisperse starting mixture, as well as to commercial and clinically used iron oxide nanoparticle formulations, such as Resovist® and Sinerem®. The size-isolation protocol presented here may help to identify SPION with optimal properties for diagnostic, therapeutic and theranostic applications.
We present the novel concept of a combined drilling and melting probe for subsurface ice research. This probe, named “IceMole”, is currently developed, built, and tested at the FH Aachen University of Applied Sciences’ Astronautical Laboratory. Here, we describe its first prototype design and report the results of its field tests on the Swiss Morteratsch glacier. Although the IceMole design is currently adapted to terrestrial glaciers and ice shields, it may later be modified for the subsurface in-situ investigation of extraterrestrial ice, e.g., on Mars, Europa, and Enceladus. If life exists on those bodies, it may be present in the ice (as life can also be found in the deep ice of Earth).
The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), holds the potential of providing significant performance advantages over the flat solar sail. Previous SPT design concepts, however, do not consider shadowing effects and multiple reflections of highly concentrated solar radiation that would inevitably destroy the gossamer sail film. In this paper, we propose a novel advanced SPT (ASPT) design concept that does not suffer from these oversimplifications. We present the equations that describe the thrust force acting on such a sail system and compare its performance with respect to the conventional flat solar sail.
The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), is a solar sail design concept, for which the two basic functions of the solar sail, namely light collection and thrust direction, are uncoupled. In this paper, we introduce a novel SPT concept, termed the Advanced Solar Photon Thruster (ASPT). This model does not suffer from the simplified assumptions that have been made for the analysis of compound solar sails in previous studies. We present the equations that describe the force, which acts on the ASPT. After a detailed design analysis, the performance of the ASPT with respect to the conventional flat solar sail (FSS) is investigated for three interplanetary mission scenarios: An Earth-Venus rendezvous, where the solar sail has to spiral towards the Sun, an Earth-Mars rendezvous, where the solar sail has to spiral away from the Sun, and an Earth-NEA rendezvous (to near-Earth asteroid 1996FG3), where a large orbital eccentricity change is required. The investigated solar sails have realistic near-term characteristic accelerations between 0.1 and 0.2mm/s2. Our results show that a SPT is not superior to the flat solar sail unless very idealistic assumptions are made.