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Xylose Utilising Recombinant Saccharomyces cerevisiae strains

Through metabolic engineering, S. cerevisiae was provided with the necessary enzymes required for xylose utilisation during ethanolic fermentation of xylose-rich lignocellulose raw materials. For xylitol production, S. cerevisiae was provided with the Pichia stipitis XYL1 gene encoding xylose reductase (XR). The in-vivo reduction and the following excretion of xylitol, requires a co-substrate for

Modeling and Control of a Parallel Robot Using Modelica

A new type of high-performance robots has been developed by ABB Robotics, the Robotics Lab at Lund University and Güdel AG, Switzerland. In all parts of the project, ranging from the simulation of the kinematic configuration and reachable workspace, and kinematic and dynamic calibration/grey-box identification, and to code generation of controllers and optimal switching strategies for hybrid contr

A 3.3V low-jitter frequency synthesizer applied to fast Ethernet transceiver

A frequency synthesizer applied to 10/100 Base-T Ethernet transceiver is described. It can work in 10Mbps or 100Mbps mode adaptively and convert from one mode to another freely. The circuit can meet both requirements of transmitter on rising/falling time and receiver on CDR so that the additional power and area are saved. Under some testing circumstance, G of voltage control oscillator jittercycle

Modeling and Calibration of Preparative Chromatography

Popular Abstract in Swedish Det mesta i min avhandling handlar om utveckling av uppreningsprocesser i läkemedelsindurstin. Den stora kostnaden för läkemedelsföretagen ligger oftast inte i att producera ett läkemedel, utan att ta fram en produkt. Det är också långt ifrån alla kandidater till läkemedel som till slut blir en produkt. Detta kan till exempel bero på att kandidaten inte var tillräckligtIn my thesis, I have modeled adsorption chromatography and simulated, calibrated, and analyzed models of adsorption chromatography. While my main focus has been modeling and calibration of the models by estimating the parameters, the models used have been partly new. The simulations are differentiated from the modeling in that the modeling describes the partial differential algebraic equation, whi