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Keywords
Adaptive logistics : information management for planning and control of small series assembly
(2007)
Berechnung und Bemessung von durch Erdbeben beanspruchten Mauerwerksbauten nach DIN 4149 (04.2005)
(2007)
Beurteilung der Ausbaunotwendigkeit von Eisenbahn-Streckenabschnitten - ein anspruchsloses Verfahren
(2007)
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.
Computational aeroelastic analysis and design of the HIRENASD wind tunnel wing model and tests
(2007)
In the Collaborative Research Center SFB 401 at RWTH Aachen University, the numerical aeroelastic method SOFIA for direct numerical aeroelastic simulation is being progressively developed. Numerical results obtained by applying SOFIA were compared with measured data of static and dynamic aeroelastic wind tunnel tests for an elastic swept wing in subsonic flow.
Denk- und Lernspielzeug : Offenlegungsschrift : DE 102006003433 A1 ; Offenlegungstag: 26.07.2007
(2007)
Der Internally Commutated Thyristor (ICT) : ein neuartiger GCT mit integrierter Ausschalteinheit
(2007)
Detecting synchronization clusters in multivariate time series via coarse-graining of Markov chains
(2007)
Enterprise SOA einführen
(2007)
Using results from an 8 m2 instrumented force plate we describe field measurements of normal and shear stresses, and fluid pore pressure for a debris flow. The flow depth increased from 0.1 to 1 m within the first 12 s of flow front arrival, remained relatively constant until 100 s, and then gradually decreased to 0.5 m by 600 s. Normal and shear stresses and pore fluid pressure varied in-phase with the flow depth. Calculated bulk densities are ρb = 2000–2250 kg m−3 for the bulk flow and ρf = 1600–1750 kg m−3 for the fluid phase. The ratio of effective normal stress to shear stress yields a Coulomb basal friction angle of ϕ = 26° at the flow front. We did not find a strong correlation between the degree of agitation in the flow, estimated using the signal from a geophone on the force plate, and an assumed dynamic pore fluid pressure. Our data support the idea that excess pore-fluid pressures are long lived in debris flows and therefore contribute to their unusual mobility.
Generative Fertigungsverfahren - Rapid Prototyping - Rapid Tooling - Rapid Manufacturing, 3. Aufl.
(2007)
Geotechnik
(2007)
Geotechnik
(2007)
Gleichstellungsabrede – Gestaltungsmöglichkeiten und -notwendigkeiten für die betriebliche Praxis
(2007)
Grundlagen des Mobilfunks
(2007)