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| 1 | An operating state estimation model for integrated energy systems based on distributed solution显示文摘In view of the disadvantages of the traditional energy supply systems,such as separate planning,separate design,independent operating mode,and the increasingly prominent nonlinear coupling between various subsystems,the production,transmission,storage and corn sumption of multiple energy sources are coordinated and optimized by the integrated energy system,which improves energy and infrastructure utilization,promotes renewable energy consumption,and ensures reliability of energy supply.In this paper,the mathematical model of the electricity-gas interconnected integrated energy system and its state estimation method are studied.First,considering the nonlinearity between measurement equations and state variables,a performance simulation model is proposed.Then,the state consistency equations and constraints of the coupling nodes for multiple energy sub-systems are established,and constraints are relaxed into the objective function to decouple the integrated energy system.Finally,a distributed state estimation framework is formed by combining the synchronous alternating direction multiplier method to achieve an efficient estimation of the state of the integrated energy system.A simulation model of an electricity-gas interconnected integrated energy system verifies the efficiency and accuracy of the state estimation method proposed in this pape.The results show that the average relative errors of voltage amplitude and node pressure estimated by the proposed distributed state estimation method are only 0.0132%and 0.0864%,much lower than the estimation error by using the Lagrangian relaxation method.Besides,compared with the centralized estimation method,the proposed distributed method saves 5.42 s of computation time.The proposed method is more accurate and efficient in energy allocation and utilization. | Dengji ZHOU Shixi MA Dawen HUANG Huisheng ZHANG Shilie WENG | 2020 | Frontiers in Energy2020，14，4： | 5 |
| 2 | Rates of oxygen consumption and tolerance of hypoxia and desiccation in Chinese black sleeper(Bostrichthys sinensis)and mudskipper(Boleophthalmus pectinirostris)embryos显示文摘The rates of oxygen consumption, tolerance of hypoxia and desiccation of the Chinese black sleeper (Bostrichthys sinensis) and mudskipper (Boleophthalmus pectinirostris) embryos were investigated. The pattern of oxygen consumption of the Chinese black sleeper embryos was similar to that of the mudskipper ones. The lowest rates of oxygen consumption[(1.65±0.66)nmol/ (ind.·h)] of the Chinese black sleeper embryos 16 h after fertilization and the lowest rates of oxygen consumption [(0.79± 0.08)nmol/(ind.·h)] of the mudskipper embryos 6 h after fertilization were recorded, respectively. Then the rates of oxygen consumption of these two species embryos increased gradually until hatching [(8.26±1.70)nmol/(ind.·h)in the Chinese black sleeper, (2.69±0.23)nmol/(ind.·h) in mudskipper]. After exposure to hypoxia water (0.16 mg/dm3), bradycardia of the embryos occurred in both the Chinese black sleeper and the mudskipper. However, the Chinese black sleeper embryos survived approximately 45 min longer than the mudskipper ones. After exposure to desiccation at a relative humidity of 58%, bradycardia of the embryos was observed in both the Chinese black sleeper and the mudskipper, and the Chinese black sleeper embryos lived approximately 9 min longer than the mudskipper ones. | CHEN Shixi HONG Wanshu ZHANG Qiyong WU Renxie WANG Qiong | 2006 | Acta Oceanologica Sinica2006，25，4： | 3 |
| 3 | Decoupling optimization of integrated energy system based on energy quality character显示文摘Connections among multi-energy systems become increasingly closer with the extensive application of various energy equipment such as gas-fired power plants and electricity-driven gas compressor.Therefore,the integrated energy system has attracted much attention. This paper establishes a gas-electricity joint operation model,proposes a system evaluation index based on the energy quality character after considering the grade difference of the energy loss of the subsystem,and finds an optimal scheduling method for integrated energy systems.Besides,according to the typical load character- istics of commercial and residential users,the optimal scheduling analysis is applied to the integrated energy system composed of an IEEE 39nodes power system and a 10nodes natural gas system.The results prove the feasibility and effectiveness of the proposed method. | Shixi MA Shengnan SUN Hang WU Dengji ZHOU Huisheng ZHANG Shilie WENG | 2018 | Frontiers in Energy2018，12，4： | 3 |
| 4 | Effects of supported angle on stability and dynamical bifurcations of cantilevered pipe conveying fluid显示文摘The effects of the supported angle on the stability and dynamical bifurcations of an inclined cantilevered pipe conveying fluid are investigated. First, a theoretical model of the pipe is developed through the force balance and stress-strain relationship. Second,the response surfaces, stability, and critical lines of the typical hanging system(H-S) and standing system(S-S) are discussed based on the modal analysis. Last, the bifurcation diagrams of the pipe are presented for different supported angles. It is shown that pipes will undergo a series of bifurcation processes and show rich dynamic phenomena such as buckling, Hopf bifurcation, period-doubling bifurcation, chaotic motion, and divergence motion. | Chunbiao GAN Shuai JING Shixi YANG Hua LEI | 2015 | Applied Mathematics and Mechanics(English Edition)2015，36，6： | 2 |
| 5 | Reproductive ecology of the mudskipper Boleophthalmus pectinirostris显示文摘The reproductive ecology of the mudskipper Boleophthalmus pectinirostris was investigated during the spawning season in the Funing Bay, Fujian, China. The fish burrows were basically Y-shaped and had two openings onto the mudflats. Part of the intersection at the center of the burrow was dilated to form a 'spawning chamber'. The dissolved oxygen concentrations (0.40~0.65 mg/dm3)of water 15 cm deep inside the burrows were much lower than those (5.96~6.19 mg/dm3) of intertidal pool water. Water temperatures inside the burrows were much lower than those of intertidal pools. Field investigations indicated that eggs were laid on the inner wall and ceiling of the spawning chamber by means of filamentous attachments, and a male stayed inside the burrows to guard it. Field investigations also suggested that fish of both sexes constructed mud burrows by themselves but that the spawning chamber was made only in the male burrow. The male attracted a female to his burrow for mating and spawning. There was no water in the spawning chamber, and thus the eggs were exposed to the air in the chamber. Changes in spawning readiness and gonadosomatic index indicated that synchronization of spawning was related to the semi-lunar periodicity, and this is the first report of this relationship in the mudskippers. | HONG Wanshu CHEN Shixi ZHANG Qiyong WANG Qiong | 2007 | Acta Oceanologica Sinica2007，26，4： | 2 |
| 6 | Arsenic Distribution Pattern in Different Sources of Drinking Water and their Geological Background in Guanzhong Basin, Shaanxi, China显示文摘To study arsenic(As) content and distribution patterns as well as the genesis of different kinds of water, especially the different sources of drinking water in Guanzhong Basin, Shaanxi province, China, 139 water samples were collected at 62 sampling points from wells of different depths, from hot springs, and rivers. The As content of these samples was measured by the intermittent flowhydride generation atomic fluorescence spectrometry method(HG-AFS). The As concentrations in the drinking water in Guanzhong Basin vary greatly(0.00–68.08 μg/L), and the As concentration of groundwater in southern Guanzhong Basin is different from that in the northern Guanzhong Basin. Even within the same location in southern Guanzhong Basin, the As concentrations at different depths vary greatly. As concentration of groundwater from the shallow wells(<50 m deep, 0.56–3.87 μg/L) is much lower than from deep wells(110–360 m deep, 19.34–62.91 μg/L), whereas As concentration in water of any depth in northern Guanzhong Basin is <10 μg/L. Southern Guanzhong Basin is a newly discovered high-As groundwater area in China. The high-As groundwater is mainly distributed in areas between the Qinling Mountains and Weihe River; it has only been found at depths ranging from 110 to 360 m in confined aquifers, which store water in the Lishi and Wucheng Loess(Lower and Middle Pleistocene) in the southern Guanzhong Basin. As concentration of hot spring water is 6.47–11.94 μg/L; that of geothermal water between 1000 and 1500 m deep is 43.68–68.08 μg/L. The high-As well water at depths from 110 to 360 m in southern Guanzhong Basin has a very low fluorine(F) value, which is generally <0.10 mg/L. Otherwise, the hot springs of Lintong and Tangyu and the geothermal water in southern Guanzhong Basin have very high F values(8.07–14.96 mg/L). The results indicate that highAs groundwater in depths from 110 to 360 m is unlikely to have a direct relationship with the geothermal water in the same area. As concentration of all reservoirs and rivers(both contaminated and uncontaminated) in the Guanzhong Basin is <10 μg/L. This shows that pollution in the surface water is not the source of the high-As in the southern Guanzhong Basin. The partition boundaries of the high- and low-As groundwater area corresponds to the partition boundaries of the tectonic units in the Guanzhong Basin. This probably indicates that the high-As groundwater areas can be correlated to their geological underpinning and structural framework. In southern Guanzhong Basin, the main sources of drinking water for villages and small towns today are wells between 110–360 m deep. All of their As contents exceed the limit of the Chinese National Standard and the International Standard(>10 μg/L) and so local residents should use other sources of clean water that are <50 m deep, instead of deep groundwater(110 to 360 m) for their drinking water supply. | LUO Kunli ZHANG Shixi TIAN Yuan GAO Xing | 2014 | Acta Geologica Sinica(English Edition)2014，88，3： | 2 |
| 7 | Generation of two transgenic amphioxus lines using the Tol2 transposon system显示文摘Amphioxus or lancelets are regarded as a promising model animals for studying developmental mechanisms in chordates, and the evolution of vertebrate characters, because of their important phylogenetic position and their genomic and anatomical simplicity(Bertrand and Escriva, 2011; Holland and Yu, 2004). Although several recent advances have made amphioxus more tractable | Chenggang Shi Jing Huang Shixi Chen Guang Li Yiquan Wang | 2018 | Journal of Genetics and Genomics2018，45，9： | 2 |
| 8 | The synthesis and microstructure of tabular SrTiO3 crystal显示文摘 | Hanxing Liu Xiaoqin Sun Qinglin Zhao Jing Xiao Shixi Ouyang | 2003 | Solid-State Electronics2003，47，12： | 1 |
| 9 | Molecular motions of human HIV-1 gp120 envelope glycoproteins显示文摘 | Liu Shuqun Liu Shixi Fu Yunxin | 2008 | Journal of Molecular Modeling2008，14，9： | 1 |
| 10 | AR model prediction-based EMD method and its application to data extension显示文摘 | Hu Jingsong Yang Shixi | 2007 | Journal of Vibration Measurement & Diagnosis2007，27，2： | 1 |
| 11 | Time-frequency analysis of vibration signals in rotating machinery显示文摘 | Hu Jingsong Yang Shixi Wu Zhaotong | 2004 | Journal of Vibration Measurment & Diagnosis2004，24，2： | 1 |
| 12 | 显示文摘 | 杜钢军(DuGJ) 时小燕(ShiXY) | 2011 | 国际药学研究杂志2011，5，： | 1 |
| 13 | Improving Rate Performance of LiFePO4 Cathode Materials by Hybrid Coating of Nano-Li3PO4 and Carbon显示文摘 | Zhao Shixi Ding Hao Wang Yanchao | 2013 | J Alloys Compd2013，566，： | 1 |
| 14 | Theanthrac-nosefungusofOphiopogonjaponicusanditsbiologicalcharacteristics(inChinese)[J]显示文摘 | RenGL ShiXY GongCW etal | | 河南农业大学学报0，，： | 1 |
| 15 | The syntheses and microstructures of tabular SrTiO 3 crystal显示文摘 | Hanxing Liu Xiaoqin Sun Qinglin Zhao Jing Xiao Shixi Ouyang | 2003 | Solid State Electronics2003，，12： | 1 |
| 16 | Reconstruction of curved solids from engineering drawings显示文摘 | Liu Shixie Hu Shimin Chen Yujian | 2001 | Computer Aided Design2001，33，14： | 1 |
| 17 | Experimental and Modeling Study of Kinetics for Methane Hydrate Formation with Tetrahydrofuran as Promoter显示文摘The kinetics behavior of methane hydrate formation in the presence of tetrahydrofuran(THF)as promoter was studied.A set of experimental equipment was designed and constructed.A series of kinetics data for the formation of methane hydrate in the presence of THF were measured with the isochoric method.The influences of temperature, pressure and liquid flow rate on the methane consumption rate were studied respectively.Based on the Chen-Guo hydrate formation mechanism,a kinetics model for the formation of methane hydrate in the presence of THF by using the dimensionless Gibbs free energy difference of quasi-chemical reaction of basic hydrate formation,??GRT,as the driving force was proposed.The model was used to calculate the rate of methane consumption and it was shown that the calculated results were in good agreement with the experimental results. | Ning Zhengfu Zhang Shixi Zhang Qin Zhen Shuangyi Chen Guangjin | 2007 | Petroleum Science2007，4，1： | 1 |
| 18 | Longitudinalwave propagation in a rod with variable cross-section显示文摘 | Gan Chunbiao Wei Yimin Yang Shixi | 2014 | Journal of Sound and Vibration2014，333，2： | 1 |
| 19 | Longitudinalwave propagation in a multi-step rod with variablecross-section显示文摘 | Gan Chunbiao Wei Yimin Yang Shixi | 2014 | Journal of Vibration and Control2014，，： | 1 |
| 20 | sncRNA changes induced by tension in hypertrophic scar显示文摘Hypertrophic scar(HS)is an abnormal fibroproliferative healing process after skin injury including burn,surgery and folliculitis,and HS is sometimes induced without obvious causation especially in susceptible persons[1].But the specific HS formation mechanism is still obscure.Several hypotheses have been proposed to explain the pathogenesis of hypertrophic scar,the tension hypothesis seems to be the most persuasive theory.There are several lines of clinical evidence supporting this theory:some sites with high HS incidence rate in the body include the dorsum,the mandible. | Chuang Yin Shixi Zhang Chen Ya Chuandong Wang Yimin Liang Chen Wang | 2022 | Acta Biochimica et Biophysica Sinica2022，54，8： | 1 |
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