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DA Huse 《Canadian Metallurgical Quarterly》1986,33(11):7806-7807
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In 10 neurosurgical patients with intracerebral angiomas circulatory and respiratory functions were studied. After induction of anesthesia the cardiac output declined from an average value of 7.63 +/- 2.13 1.min-1 to 3.99 +/- 0.43 1.min-1 (-48%) in consequence to the decline of the heart rate by 24% and the stroke volume by 32%. In the same time increased the calculated peripheral resistance in reverse proportion to the decline of the cardiac output by 47%. The oxygen transport decreased after induction of anaesthesia by 48% while the oxygen uptake decreased by 28.6%. The oxygen utilization coefficient increased by 48% (0.33) and documented a satisfactory relation between oxygen-uptake and oxygen utilization in neuroleptanaesthesia. 相似文献
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This paper presents a new method for solving the unit commitment problem by simulation of a competitive market where power is traded through a power exchange (PX). Procedures for bidding and market clearing are described. The market clearing process handles the spinning reserve requirements and power balance simultaneously. The method is used on a standard unit commitment problem with minimum up/down times, start-up costs and spinning reserve requirement taken into account. Comparisons with solutions provided by Lagrangian relaxation, genetic algorithms and Chao-an Li's unit decommitment procedure demonstrate the potential benefits of this new method. The motivation for this work was to design a competitive electricity market suitable for thermal generation scheduling. However, performance in simulations of the proposed market has been so good that it is presented here as a solving technique for the unit commitment problem 相似文献
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