Article
Refine
Year of publication
- 2007 (94) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (38)
- Fachbereich Elektrotechnik und Informationstechnik (21)
- IfB - Institut für Bioengineering (20)
- INB - Institut für Nano- und Biotechnologien (15)
- Fachbereich Luft- und Raumfahrttechnik (13)
- Fachbereich Chemie und Biotechnologie (12)
- Fachbereich Wirtschaftswissenschaften (5)
- Fachbereich Energietechnik (4)
- Solar-Institut Jülich (2)
- Fachbereich Maschinenbau und Mechatronik (1)
Language
- English (94) (remove)
Document Type
- Article (94) (remove)
Keywords
- Air purification (1)
- Bauingenieurwesen (1)
- CAD (1)
- Clusterion (1)
- Luftreiniger (1)
- Plasmacluster ion technology (1)
- Raumluft (1)
- civil engineering (1)
- debris flow (1)
IT Service Deployment
(2007)
The most of conventional methods of air purification use the power of a fan to draw in air and pass it through a filter. The problem of bacterial contamination of inner parts of such a type of air conditioners in some cases draws attention towards alternative air-cleaning systems. Some manufacturers offer to use the ozone's bactericidal and deodorizing effects, but the wide spreading of such systems is restricted by the fact that toxic effects of ozone in respect of human beings are well known. In 2000 Sharp Inc. introduced "Plasma Cluster Ions (PCI)" air purification technology, which uses plasma discharge to generate cluster ions (I 0-14 ). This technology has been developed for those customers that are conscious about health and hygiene. In our experiments, we focused on some principal aspects of plasma-generated ions application - time-dependency and irreversibility of bactericidal action, spatial and kinetic characteristics of emitted cluster particles, their chemical targets in the microbial cells.
Mannoheptulose is a seven-carbon sugar. It is an inhibitor of glucose-induced insulin secretion due to its ability to selectively inhibit the enzyme glucokinase. An improved procedure for mannoheptulose isolation from avocados is described in this study (based upon the original method by La Forge). The study focuses on the combination of biotransformation and downstream processing (preparative chromatography) as an efficient method to produce a pure extract of mannoheptulose. The experiments were divided into two major phases. In the first phase, several methods and parameters were compared to optimize the mannoheptulose extraction with respect to efficiency and purity. In the second phase, a mass balance of mannoheptulose over the whole extraction process was undertaken to estimate the yield and efficiency of the total extraction process. The combination of biotransformation and preparative chromatography allowed the production of a pure mannoheptulose extract. In a biological test, the sugar inhibited the glucokinase enzyme activity efficiently.
Solar Sail Kinetic Energy Impactor Trajectory Optimization for an Asteroid-Deflection Mission
(2007)
Chain scattering parameters or T-parameters are a useful tool for calculating cascaded two-ports. With the increasing importance of mixed-mode S-parameters, a need for converting the T-parameters from their unbalanced form into a balanced form emerges for suiting both common and differential mode waves, as well as the mode conversion. This paper presents the derivation of the equations for transformations between mixed-mode S- and T-parameters for a mixed-mode two-port. Although derived in a way very similar to monomode T-parameters, no simplifications were necessary. Measurement results exemplify the quality of the T-parameter transformation under real-life conditions.
Handheld measurement device for field-effect sensor structures: Practical evaluation and limitations
(2007)