The Experts below are selected from a list of 171696 Experts worldwide ranked by ideXlab platform
N A Vinogorov - One of the best experts on this subject based on the ideXlab platform.
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optimal regulation of a reactor in a regime of an extension of an Operation Period due to suppression of xenon poisoning
Atomic Energy, 1998Co-Authors: N A VinogorovAbstract:The results obtained demonstrate that the Operation Period extension regime can be optimized by suppressing the poisoning by xenon during power cycling [4].
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Optimal regulation of a reactor in a regime of an extension of an Operation Period due to suppression of xenon poisoning
Atomic Energy, 1998Co-Authors: N A VinogorovAbstract:The results obtained demonstrate that the Operation Period extension regime can be optimized by suppressing the poisoning by xenon during power cycling [4]. Each cycle of regulation of the optimized regime [4] contains intervals during which the power is correspondingly decreased with the maximum admissible rate, maintained at the minimum fixed level, increased with maximum admissible rate, increased with the reactor maintained with a zero reactivity excess, and maintained at the maximum fixed level. The computed Operation duration and admissable power production in the optimized Operation Period extension regime correspond to the currently adopted regimens [1]. It can be expected that the solution of the optimization problem obtained in the point approximation will remain of the same form on switching to spatially dependent variables, since the spatial nonuniformity can be limited, without introducing additional parameters into the problem, by increasing the lower power limit X_4min. Analysis of the characteristics of the regime which are associated with the spatial dependence of the coordinates X_i is best done for a specific reactor in a computational model that takes account of the structural features of the reactor. Taking account of the advantages mentioned above, the optimized regime for extension of an Operation Period is promising for nuclear power plants with BBER reactors.
Cheng Ling-yan - One of the best experts on this subject based on the ideXlab platform.
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Practice and effects of standardized nursing management of pain for patients with total knee replacement during Operation Period
Journal of Nursing Administration, 2013Co-Authors: Cheng Ling-yanAbstract:Objective To explore the practice and effects of standardized nursing management of pain for patients with total knee replacement.Methods Pain management system during Operation Period was established.Standardized pain management process was formulated and implemented.Results After the implementation of pain management,nurses'pain knowledge and patient satisfaction were improved,the score of postoperative pain was lower,and the time to come down to earth for the first time and the required time of postoperative knee flexion angle≥ 90° were shortened(P 0.01 or P 0.05).Conclusion Implementation of standardized pain management can enhance nursing level of pain management,improve pain control quality and patient satisfaction,and promote early rehabilitation of joint function in patients.
Rui Xiaomin - One of the best experts on this subject based on the ideXlab platform.
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An Estimation Method of Wind Turbines' Mean Time Between Failures During the Trial Operation Period
2014Co-Authors: Rui XiaominAbstract:Mean time between failures(MTBF) is an important indicator which reflects wind turbines' reliability during the trial Operation Period. However, due to the lack of the failure data during this Period and the randomness of downtime, there are larger errors in the existing estimation methods. For such a small sample estimation problem and the randomness of downtime, a MTBF estimation method was proposed, by using multi-unit Operation information. The basic idea was: 1) the reliability of the unit was estimated with Kaplan-Meier non-parametric method, by constructing the random censored fault down data of several units with the same configuration, according to the characteristics of the wind turbine installation and failure data; 2) based on the above preliminary estimating result, the two parameters Weibull distribution was fitted, and then the units' MTBF was calculated according to the nature of the Weibull distribution. The MTBF of 20 wind turbines was calculated, which were installed in a wind farm in north China and put into Operation in November 2012. The results show that this method can improve the accuracy of MTBF's estimation effectively during the trial Operation Period.
Zhu Bofang - One of the best experts on this subject based on the ideXlab platform.
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Temperature Field in the Operation Period of a Massive Concrete Structure
Thermal Stresses and Temperature Control of Mass Concrete, 2014Co-Authors: Zhu BofangAbstract:The surface of dam is in contact with water and air in the Operation Period, so the Periodical variations of the temperatures of water and air will exert influence on the temperature field of the dam. The depth of influence depends on the Period of variation.
Zerrin Yilmaz - One of the best experts on this subject based on the ideXlab platform.
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economic evaluation of the building envelope and Operation Period of heating system in terms of thermal comfort
Energy and Buildings, 2006Co-Authors: Gulten Manioglu, Zerrin YilmazAbstract:One of the most important properties of a passively designed building is to provide thermal comfort conditions for users with a minimum heating energy cost. Therefore, primary parameters affecting heating energy consumption should be determined correctly during the design stage. Building envelope and Operation Period of the heating system are important parameters affecting total heating energy consumption in the building. In this study, an approach for the determination of the most convenient building envelope-Operation Period combination in relation to the life cycle cost and climatic comfort is proposed. For the application of the approach, total heat loss and life cycle cost of the building envelope-Operation Period combinations of a sample building, which is heated intermittently and used during underheated Period of the year were calculated and combinations which provide thermal comfort during the occupation Period with the minimum life cycle cost are determined as a most convenient combinations. This study is carried out in Istanbul, which is representative city for temperate-humid zone of Turkey.