Continuous operation of alcohol dehydrogenase (ADH) catalysed enantioselective reduction in a biphasic sytem showed gains in productivity and stability of the overall reaction system. The total turnover numbers obtained for the cofactor NADP + are high with up to 1.5 10 4 . Productivity for (R)-2-butanol with Lactobacillus brevis ADH was up to 26 kmol (mol enzyme) 1 . Enantioselectivity was gre...

This paper presents an attitude control strategy in the three planar space robots having two DOF for docking operation of a free flying hexagonal object using the bond graph technique for modeling and simulation. As the highly non linearity, strongly coupled and non-holonomic characteristics of a free flying space robot, the position and posture of the base body changes when the free floating s...

Fiber optic cables are widely used in modern systems that must provide stable operation during exposure to changing environmental conditions. For example, a fiber optic cable on a satellite may have to reliably function over a temperature range of -50°C up to 125°C. While the system requirements for a particular application will dictate the exact method by which the fibers should be prepared, t...

This paper is aimed at designing a congestion control system that scales gracefully with network capacity, providing high utilization, low queueing delay, dynamic stability, and fairness among users. In earlier work we had developed fluid-level control laws that achieve the first three objectives for arbitrary networks and delays, but were forced to constrain the resource allocation policy. In ...

Yang, W. 2017. Hydropower plants and power systems. Dynamic processes and control for stable and efficient operation. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1494. 140 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9871-9. As the largest global renewable source, hydropower shoulders a large portion of the regulation duty ...

We experimentally demonstrated that nanoribbon field-effect transistors can be used for stable high-temperature applications. The on-current level of the nanoribbon FETs decreases at elevated temperatures due to the degradation of the electron mobility. We propose two methods of compensating for the variation of the current level with the temperature in the range of 25-150°C, involving the appl...

Function (linear) spaces E on which some arbitrary real or complex continuous function operates (in other words, E is stable under the unary operation defined by this function) were studied by K. de Leeuw, Y. Katznelson, Y. Sternfeld and Y. Weit, showing, e.g. that for a complex function space E consisting of bounded functions, containing the constants and closed w.r.t. the sup-norm, if some no...