| 1 | Development of Amphioctopus fangsiao(Mollusca:Cephalopoda)from eggs to hatchlings:indications for the embryonic developmental management显示文摘Amphioctopus fangsiao is an important fishery resource in northern coastal China,and there is an interest to develop its commercial cultivation under controlled conditions.In this study,we describe the embryonic development of A.fangsiao from eggs to hatchlings,focusing on the formation of the mantle,eyes and arms.Results indicate that this species has several favorable characteristics for aquaculture,such as a short incubation period and a large body size of hatchlings.During the organogenesis,the primordia of organs,including the optic sac and arm crown,first appeared at stage VIII;then the mantle primordium,eye primordia and arm crown become visible at stage IX-X,and the rudiment of embryo(mantle,eyes and arms)was completely outlined at stage XI.The retinal pigment appeared yellowish at stage X-XI and gradually deepens in pigmentation in the subsequent stages,turning from yellowish to yellow,red,dark-red and eventually black.At stage XV,the primary lid fold,with only a circular opening remaining,covered the eye,and the dorsal ocular edge did not reach the ventral side until hatching(day 1-7).Afterwards,about 24 days after hatching,both the dorsal and ventral sides of eyelid could contract freely,with an oval and elongate slit remaining that was a miniature version of the adult morphology.The chromatophores and ink sac appeared at stage XIV.These observations provide a foundation for the reproductive biology and aquaculture of A.fangsiao and also offer an important reference for the research of embryonic development in related species. | Dian hang Jiang Xiaodong Zheng Yaosen Qian Qingqi Zhang | 2020 | Marine Life Science & Technology2020，2，1： | 2 |
| 5 | Knowledge-Based Efficient N-1 Analysis Calculation Method for Urban Distribution Networks with CIM File Data显示文摘The N-1 criterion is a critical factor for ensuring the reliable and resilient operation of electric power distribution networks.However,the increasing complexity of distribution networks and the associated growth in data size have created a significant challenge for distribution network planners.To address this issue,we propose a fast N-1 verification procedure for urban distribution networks that combines CIM file data analysis with MILP-based mathematical modeling.Our proposed method leverages the principles of CIM file analysis for distribution network N-1 analysis.We develop a mathematical model of distribution networks based on CIM data and transfer it into MILP.We also take into account the characteristics of medium voltage distribution networks after a line failure and select the feeder section at the exit of each substation with a high load rate to improve the efficiency of N-1 analysis.We validate our approach through a series of case studies and demonstrate its scalability and superiority over traditional N-1 analysis and heuristic optimization algorithms.By enabling online N-1 analysis,our approach significantly improves the work efficiency of distribution network planners.In summary,our proposed method provides a valuable tool for distribution network planners to enhance the accuracy and efficiency of their N-1 analyses.By leveraging the advantages of CIM file data analysis and MILP-based mathematical modeling,our approach contributes to the development of more resilient and reliable electric power distribution networks. | Lingyu Liang Xiangyu Zhao Wenqi Huang Liming Sun Ziyao Wang Yaosen Zhan | 2023 | Energy Engineering2023，120，12： | 0 |
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