This paper studies the distributed matrix-scaled consensus, which can be treated as a kind of generalized cooperative control problem and has broad applications in the field of social network and engineering. Distribu...
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This paper presents a robust control approach for permanent magnet synchronous motors. The nonlinear model of these motors includes two voltage inputs in d-q coordinates and two outputs: speed and current in the d dir...
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With the accelerating development of the Internet of Things (IoT), its applications in power system are gradually becoming various and comphcated, followed by the diversity of relevant technical requirements. In order...
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Optimized fin arrangement and dimension of heat exchanger can improve the maximum output power of thermoelectric generator(TEG)system which converts the wasted heat into electricity with thermoelectric modules(TEMs).C...
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Optimized fin arrangement and dimension of heat exchanger can improve the maximum output power of thermoelectric generator(TEG)system which converts the wasted heat into electricity with thermoelectric modules(TEMs).Considering that the geometric symmetry contributes to the temperature uniformity improvement and convenient TEMs arrangement,a low-backpressure TEG system based on a polyhedral-shape heat exchanger was *** assess the effect of inner topology and fin parameters on the heat transfer and output power of the TEG system,a realizable k-?turbulence based numerical model was established and validated to perform numerical *** results demonstrate that increasing fin length,fin width and fin intersection angle are beneficial to the average surface temperature,temperature distribution uniformity and maximum output power of the TEG ***,decreasing fin spacing distance contributes to the enhanced average surface temperature and maximum power of TEG system,and has insignificant effect on its temperature *** inserted fins with optimal length,width,intersection angle and spacing distance enhance higher output power,whereas result in increasing *** maximum difference between the experimental and simulation results is 3.2%,which validates the feasibility of the established numerical *** also provides a theoretical reference to the optimal design and performance analysis of low-backpressure TEG systems used in automobile exhaust heat recovery.
This paper presents magnetic integration provides an accurate method for the fully utilizing the magnetizing curves of several magnetic components by integrating into one magnetic core in order to achieve a lighter an...
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The phyA^m gene encoding acid phytase and optimized neutral phytase phyCs gene were inserted into expression vector pPIC9K in correct orientation and transformed into Pichiapastoris in order to expand the pH profile o...
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The phyA^m gene encoding acid phytase and optimized neutral phytase phyCs gene were inserted into expression vector pPIC9K in correct orientation and transformed into Pichiapastoris in order to expand the pH profile ofphytase and decrease the cost of production. The fusion phytase phyA^m-phyCs gene was successfully overexpressed in P. pastoris as an active and extracellular phytase. The yield of total extracellular fusion phytase activity is (25.4±0.53) U/ml at the flask scale and (159.1±2.92) U/ml for high cell-density fermentation, respectively. Purified fusion phytase exhibits an optimal temperature at 55 ℃ and an optimal pH at 5.5-6.0 and its relative activity remains at a relatively high level of above 70% in the range ofpH 2.0 to 7.0. About 51% to 63% of its original activity remains after incubation at 75 ℃ to 95 ℃ for 10 min. Due to heavy glycosylation, the expressed fusion phytase shows a broad and diffuse band in SDS-PAGE (sodium dodecyl sulfate-polyacrylamide gel electrophoresis). After deglycosylation by endoglycosidase H (EndoHf), the enzyme has an apparent molecular size of 95 kDa. The characterization of the fusion phytase was compared with those ofphyCs andphyA^m.
The two experimental installations for measurements of the angular distribution of the quasi-monochromatic neutron beams IASD-1 and IASD-2 (Installation for Angle Scattering Distribution) scattered by investigated sam...
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The two experimental installations for measurements of the angular distribution of the quasi-monochromatic neutron beams IASD-1 and IASD-2 (Installation for Angle Scattering Distribution) scattered by investigated samples are described here. A vacuum cylinder chamber in the middle of which an electromechanical knot is placed for automatic transposition of scattering samples is the basis of both installations. The neutron beam is transported to the sample and is taken from through the tubes closed by thin aluminum diaphragms. Both installations have the identical electronic measurement circuits. Special program ZERKIN-3 is used for management of measurement process. The measurements of the angular distributions are relative. As the standard, 208Pb sample is used. Background spectrums are measured when the beam is screened with polyethylene sample. The IASD-1 installation allows conducting the measurements under any angle in the range 30 - 150°. Registration of the scattered neutrons takes place simultaneously with four detector assemblies. One assembly consists of seven helium counters M-17 with the one pre-amplifier and individual radiation shielding. The IASD-2 installation is intended for measurements under the fixed angles of 15, 30, 55, 90, 125, 150 and 165°. For neutron registration LND-2527 and LND-281 counters are used, which are placed in common radiation shielding filled with boron carbide. The above mentioned detector assemblies with M-17 can be also used.
This paper presents a restricted-area-based localization algorithm (RAL) for wireless sensor networks (WSN), in which radio connectivity and principle of perpendicular bisectors are used to provide a lower estimation ...
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The organizations and phase composition after forging and heat treatment of the stacking fault energy for the three high manganese steel with 2.99 mJ/m2,7.9 mJ/m2 and23 mJ/m2 were observed. It's analysised that th...
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