Refine
Year of publication
- 2013 (285) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (63)
- Fachbereich Elektrotechnik und Informationstechnik (43)
- INB - Institut für Nano- und Biotechnologien (39)
- Fachbereich Energietechnik (34)
- Fachbereich Wirtschaftswissenschaften (32)
- Fachbereich Chemie und Biotechnologie (29)
- IfB - Institut für Bioengineering (28)
- Fachbereich Luft- und Raumfahrttechnik (26)
- Fachbereich Bauingenieurwesen (17)
- Fachbereich Maschinenbau und Mechatronik (15)
- Fachbereich Architektur (7)
- Solar-Institut Jülich (7)
- Fachbereich Gestaltung (6)
- Sonstiges (6)
- Nowum-Energy (4)
- ECSM European Center for Sustainable Mobility (2)
- IBB - Institut für Baustoffe und Baukonstruktionen (1)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (1)
- ZHQ - Bereich Hochschuldidaktik und Evaluation (1)
Has Fulltext
- no (285) (remove)
Document Type
- Article (138)
- Conference Proceeding (74)
- Part of a Book (25)
- Book (23)
- Report (9)
- Doctoral Thesis (5)
- Patent (4)
- Other (2)
- Conference: Meeting Abstract (1)
- Contribution to a Periodical (1)
Keywords
- Mathematik (2)
- industrial research (2)
- metal structure (2)
- steel (2)
- Bacillus atrophaeus (1)
- Business Models (1)
- Direkteinblasung (1)
- Distorsion des oberen Sprunggelenks (1)
- IT Products (1)
- IT-Marketing (1)
Wing weight estimation methodology for highly non-planar lifting systems during conceptual design
(2013)
Unsere unternehmerische Umwelt befindet sich in einem zunehmend dynamischen Wandel. Dies führt dazu, dass Herausforderungen, denen sich Unternehmen stellen müssen, immer komplexer werden. Hier gilt es zunehmend, eine Balance zwischen verschiedenen Spannungsfeldern zu erreichen. Sogenannte Megatrends stellen die Treiber dieses Wandels dar. Als Megatrend werden nach dem Zukunftsinstitut (2010a) richtungsweisende Veränderungstendenzen aufgefasst, die alle Bereiche des Lebens sowohl individuell als auch gesellschaftlich beeinflussen und langfristige Auswirkungen haben.
The concept of an injective affine embedding of the quantum states into a set of classical states, i.e., into the set of the probability measures on some measurable space, as well as its relation to statistically complete observables is revisited, and its limitation in view of a classical reformulation of the statistical scheme of quantum mechanics is discussed. In particular, on the basis of a theorem concerning a non-denseness property of a set of coexistent effects, it is shown that an injective classical embedding of the quantum states cannot be supplemented by an at least approximate classical description of the quantum mechanical effects. As an alternative approach, the concept of quasi-probability representations of quantum mechanics is considered.
Commercial materials with polyvinylpolypyrrolidone and polymeric amberlites (XAD7HP, XAD16) are commonly used for the adsorptive downstream processing of polyphenols from renewable resources. In this study, beta-zeolite-based adsorbent systems were examined, and their properties were compared to organic resins. Batch adsorption experiments were conducted with synthetic solutions of major polyphenols. Adsorption isotherms and desorption characteristics of individual adsorbent were determined based on these results. Maximum adsorption capacities were calculated using the Langmuir model. For example, the zeolites had capacities up to 203.2 mg/g for ferulic acid. To extend these results to a complex system, additional experiments were performed on rapeseed meal and wheat seed extracts as representative renewable resources. HPLC analysis showed that with 7.5% w/v, which is regarded as the optimum amount of zeolites, zeolites A and B could bind 100% of the major polyphenols as well as release polyphenols at high yields. Additionally, regeneration experiments were performed with isopropyl alcohol at 99°C to evaluate how zeolites regenerate under mild conditions. The results showed only a negligible loss of adsorption capacity and no loss of desorption capacity. In summary, it was concluded that beta-zeolites were promising adsorbents for developing new processes to isolate polyphenols from renewable resources.
Biotechnological downstream processing is usually an elaborate procedure, requiring a multitude of unit operations to isolate the target component. Besides the disadvantageous space-time yield, the risks of cross-contaminations and product loss grow fast with the complexity of the isolation procedure. A significant reduction of unit operations can be achieved by application of magnetic particles, especially if these are functionalized with affinity ligands. As magnetic susceptible materials are highly uncommon in biotechnological processes, target binding and selective separation of such particles from fermentation or reactions broths can be done in a single step. Since the magnetizable particles can be produced from iron salts and low priced polymers, a single-use implementation of these systems is highly conceivable. In this article, the principles of magnetizable particles, their synthesis and functionalization are explained. Furthermore, applications in the area of reaction engineering, microfluidics and downstream processing are discussed focusing on established single-use technologies and development potential.