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Li Changchao,Kang Zhongjian,Yu Hongguo,Wang Hao,Li Kaiji 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.5
Aiming at the energy optimization problem of multi-microgrid system, a energy optimization method of multi-microgrid system is proposed based on cooperative game theory in this paper. Firstly, taking economic cost as the objective function, a cooperative game model of multi-microgrid system is established based on the cooperative game theory. Secondly, taking the electricity price and power trading volume between micro grids as strategies and the fi nal operation cost or revenue of each micro grid as the benefi t function of the game to conduct the cooperative game under the price constraint agreement and benefi t compromise agreement. The electricity price and trading power between micro grids are obtained to achieve optimization of multi-level microgrids. Finally, the optimization method is simulated to prove the feasibility. The simulation results show that the method can eff ectively achieve the energy optimal scheduling of multi-microgrid system.
Research on Optimization Method of Home Energy Management System in Smart Grid
Li Changchao,Kang Zhongjian,Yu Hongguo,Wang Hao,Li Kaiji 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.5
In order to save users' electricity costs, this paper proposes an optimized management method for the home energy management system. Firstly, a household power grid is constructed that include photovoltaic system, energy storage system, power adjustable load, unscheduled load, and time adjustable load model. Secondly, in order to obtain a solution that can both rationalize the allocation of household load working time and minimize household electricity costs, a double objective function is defi ned. Considering the real-time price of the power grid, the optimization strategy for household energy management is formulated. Finally, simulating the daily electricity consumption of households to verify that the optimized management method of the household energy management system can eff ectively reduce users' electricity costs.
Antioxidant activity and metabolic regulation of sodium salicylate on goat sperm at low temperature
Shen Wenzheng,Fu Yu,Bai Haiyu,Zhang Zhiyu,Cao Zhikun,Liu Zibo,Yang Chao,Sun Shixin,Wang Lei,Ren Chunhuan,Ling Ying-hui,Zhang Zi Jun,Cao Hongguo 아세아·태평양축산학회 2024 Animal Bioscience Vol.37 No.4
Objective: The purpose of this study was to explore the effect of sodium salicylate (SS) on semen preservation and metabolic regulation in goats. Methods: Under the condition of low temperature, SS was added to goat semen diluent to detect goat sperm motility, plasma membrane, acrosome, antioxidant capacity, mitochondrial membrane potential (MMP) and metabonomics. Results: The results show that at the 8th day of low-temperature storage, the sperm motility of the 20 μM SS group was 66.64%, and the integrity rates of the plasma membrane and acrosome were both above 60%, significantly higher than those of the other groups. The activities of catalase and superoxide dismutase in the sperm of the 20 μM SS group were significantly higher than those of the control group, the contents of reactive oxygen species and malondialdehyde were significantly lower than those in the control group, the MMP was significantly higher than that in the control group, and the contents of Ca2+ and total cholesterol were significantly higher than those in the control group. Through metabonomics analysis, there were significant metabolic differences between the control group and the 20 μM SS group. Twenty of the most significant metabolic markers were screened, mainly involving five metabolic pathways, of which nicotinic acid and nicotinamide metabolic pathways were the most significant. Conclusion: The results indicate that SS can effectively improve the low-temperature preservation quality of goat sperm.
RealCoins : A Case Study of Enhanced Model Driven Development for Pervasive Games
Hong Guo,Hallvard Trætteberg,Alf Inge Wang,Shang Gao 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.5
Model Driven Development (MDD) and Domain Specific Modeling (DSM) have been widely used in information system domains and achieved success in many open or in-house scenarios. But its application in the game domain is seldom and immature. In our research, we identified three issues that should be considered carefully in order to play the strength of MDD in the game development environment to a larger extend: 1) structured domain analysis should be done to assure the size and familiarity of the domain; 2) adapted process should be designed to save cost and support evolution; and 3) proper tools (especially language workbenches) should be evaluated and utilized to ease DSM tasks and accelerate iterations. In this paper, we explain these three issues and illustrate our solutions to them by presenting the development details (both technical and procedural) of one pervasive game case. We evaluate the gains and costs by involving MDD into the game development process. We reflect on the issues we have met, and discuss possible future works as well.
Hong Guo,Zisong Bai,Yangyang Xu,Xueqin Wu,Ning Li,Yan Zhu,Xiaoming Wang,Peng Zhang 대한약학회 2017 Archives of Pharmacal Research Vol.40 No.7
Pongamia pinnata (Linn.) Pierre has anti-inflammatory activity and could significantly decrease serum tumor necrosis factor-a and IL-10 in arthritic rats. Previous research indicated the typical chemical constituent in P. pinnata is furanoflavone. Guided by anti-inflammatory active assay and UPLC-HRESIMS chromatography, 22 compounds were isolated from the ethanol extract of P. pinnata seedpods. One novel furanoflavone, 40-hydroxypinnatin, was elucidated by HRESIMS, 1D- and 2D-NMR spectra. The 21 known compounds, including 9 furanoflavone, were identified by comparing their NMR data with the previous data in reference. In the known compounds, 5 were isolated for the first time from the species. The anti-inflammatory activities were assayed by assessing LPS-induced NO production in BV-2 cells. 12 compounds can inhibit the production of NO without cytotoxicity at concentration of 50 lM. Among them, compounds 4 can significantly inhibit the production of NO, with the IC50 value of 31.36 lM.