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米非司酮联合水囊或依沙吖啶用于瘢痕子宫中晚期妊娠引产的研究

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医药论坛杂志 2017年第1期38卷 30-32,36页

作者：刘慧丽党群王秋明李鹏程郑州大学人民医院(河南省人民医院)妇产科郑州450003

目的为瘢痕子宫中晚期妊娠引产探索一种安全、有效的引产方式。方法回顾性分析2010年1月至2014年12月于郑州大学人民医院产科引产的瘢痕子宫孕妇118例,孕周为15~33周,将其分为2组,A组为米非司酮联合依沙吖啶引产,共61例,B组为米非司酮... 详细信息

目的为瘢痕子宫中晚期妊娠引产探索一种安全、有效的引产方式。方法回顾性分析2010年1月至2014年12月于郑州大学人民医院产科引产的瘢痕子宫孕妇118例,孕周为15~33周,将其分为2组,A组为米非司酮联合依沙吖啶引产,共61例,B组为米非司酮联合水囊引产,共57例;比较分析这2种引产方式的产程、引产成功率、产后出血量、胎盘胎膜残留率及严重并发症发生率。结果两组孕妇产后出血量、胎盘胎膜残留率比较差异无统计学意义(P>0.05),B组引产时间短于A组,差异有统计学意义(P<0.05),B组引产成功率高于A组,差异有统计学意义(P<0.05),两组均未出现严重并发症。结论米非司酮联合依沙吖啶或水囊在瘢痕子宫中晚期妊娠引产中均安全、有效,但是米非司酮联合水囊引产成功率更高,引产时间更短,适用范围更广;2种引产方式引产过程中均需严密监测。

关键词：瘢痕子宫中晚期妊娠引产米非司酮依沙吖啶水囊

制造业工匠型人才创新绩效的形成过程与验证——基于自组织目标理论的扎根研究

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华东经济管理 2025年第1期39卷 41-51页

作者：李群王雨欣常州大学商学院江苏常州213159

文章结合自组织目标理论,以制造业工匠型人才为研究对象,通过扎根理论挖掘和分析工匠型人才创新绩效的形成过程。结果表明,工匠型人才的创新绩效产生于心理目标系统建构和实现的循环过程,由“心理目标触发—心理目标建构—行动过程—行... 详细信息

文章结合自组织目标理论,以制造业工匠型人才为研究对象,通过扎根理论挖掘和分析工匠型人才创新绩效的形成过程。结果表明,工匠型人才的创新绩效产生于心理目标系统建构和实现的循环过程,由“心理目标触发—心理目标建构—行动过程—行动结果”构成,心流状态贯穿其中;工匠型人才的创新绩效体现在国家、组织和个体三个层面上,三个层面互为基础、不可分割;创新绩效经由结果反馈再一次作用于心理目标触发,产生新的心理目标,从而进入下一轮循环。在此基础上,通过词频分析进一步验证结论。

关键词：自组织目标理论工匠型人才心流创新绩效扎根理论

Identification of QTL for Popping Characteristics Using a BC_2F_2 Population and Comparison with Its F_(2:3) Population in Popcorn

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Agricultural Sciences in China 2009年第2期8卷 137-143页

作者： li Yu-ling DONG Yong-bin NIU Su-zhen CUI dang-qun Agronomy College Henan Agricultural University Zhengzhou 450002 P.R.China

Normal corn germplasm can be used to improve popcorn （Zea mays L.） through 1-2 backcrosses with popcorn as recurrent parents. Popping characteristics of derived lines from popcorn × dent or flint corn crosses play a determinant role in popcorn breeding. Advanced backcross QTL methods can effectively combine QTL identification and plant breeding. 220 selected BC2F2 families developed from a cross between Dan 232, a dent corn inbred line, and N04, an elite popcorn inbred line, were evaluated for three popping characteristics, popping volume, flake size, and popping rate, under two environmental conditions. Using composite interval mapping, a total of 10 significant QTLs were detected, and of these, 2 to 4 QTLs were identified for each trait. Six QTLs had favorable alleles contributed by Dan 232. Comparison with the 15 QTLs detected in the F2：3 families showed that 3 QTLs were the same in both populations. The QTLs should be redetected in generations developed through severe selection. Improved N04 and near isogenic lines could be developed from this BC2F2 population through selfing or another 1 to 2 backcrosses with N04.

关键词： Zea mays L. popcorn BC2F2 population quantitative trait loci popping characteristics

Quantum public-key crypto via EPR pairs

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： Xiang-qun Fu Hong-Wei li Jian-Hong Shi Tan li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

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Undersea safety mining of the large gold deposit in Xinli District of Sanshandao Gold Mine

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International Journal of Minerals,Metallurgy and Materials 2012年第7期19卷 574-583页

作者： Zhi-xiang liu Wen-gang dang Xian-qun He School of Resources and Safety Engineering Central South University Changsha 410083 China

The exploration of undersea resources becomes popular as land resources decrease. Researches were conducted with emphasis on the safety and efficiency of undersea mining of the large gold deposit in Xinli District of Sanshandao Gold Mine. A series of tests for the physical and mechanical characteristics of rock mass were carried out, and the three-dimensional geo-stress distribution was tested in the mining area. Further, a similar experimental simulation platform, which revealed the mechanism of water inrush and ascertained the reason- able thickness of the safety isolate layer, was established for the undersea mining. Meanwhile, the feasibility of cancelling the ore pillars and the safety conditions was checked by numerical simulation. The simulation results show that it is safe to exploit the ore body below the -85 m level （presently, the exploitation level is below -160 m in Xinli District）, and the ore pillars can be cancelled below the -560 m level. Fur- thermore, a novel backfill method was designed to reduce the rock strata disturbance and settlement, and the settlement of roof strata was monitored during the mining process. Engineering practice shows that the settlement of roof strata was small and that no disaster happened. This indicates that the undersea safety mining technology of the large gold deposit is achieved in Xinli District.

关键词： undersea mining gold deposits rock mechanics mine roof control computer simulation

Price-based time and energy allocation in cognitive radio multiple access networks with energy harvesting

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Science China(Information Sciences) 2017年第10期60卷 258-260页

作者： Ding XU qun li Wireless Communication Key Lab of Jiangsu Province Nanjing University of Posts and Telecommunications

Cognitive radio(CR),a concept that can solve the conflict between spectrum scarcity and low spectrum utilization,has been researched widely recently[1].There are mainly three CR models:interweave,overlay and underlay[... 详细信息

关键词： CBS Price-based time and energy allocation in cognitive radio multiple access networks with energy harvesting

DQN-based decentralized multi-agent JSAP resource allocation for UAV swarm communication

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Journal of Systems Engineering and Electronics 2023年第2期34卷 289-298页

作者： li Jie dang Xiaoyu li Sai College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China

It is essential to maximize capacity while satisfying the transmission time delay of unmanned aerial vehicle(UAV)swarm communication *** order to address this challenge,a dynamic decentralized optimization mechanism is presented for the realization of joint spectrum and power(JSAP)resource allocation based on deep Q-learning networks(DQNs).Each UAV to UAV(U2U)link is regarded as an agent that is capable of identifying the optimal spectrum and power to communicate with one *** convolutional neural network,target network,and experience replay are adopted while *** findings of the simulation indicate that the proposed method has the potential to improve both communication capacity and probability of successful data transmission when compared with random centralized assignment and multichannel access methods.

关键词： joint spectrum and power(JSAP) unmanned aerial vehicle(UAV)swarm communication deep Q-learning network(DQN) UAV to UAV(U2U)

Climate tipping-point potential and paradoxical production of methane in a changing ocean

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Science China Earth Sciences 2018年第12期61卷 1714-1727页

作者： Hongyue dang Jia li State Key Laboratory of Marine Environmental Science Institute of Marine Microbes and EcospheresCollege of Ocean and Earth SciencesXiamen UniversityXiamen 361102China Tianjin Branch of China National Offshore Oil Corporation Ltd Tianjin 300452China

The global warming potential of methane(CH_4) is about 30 times stronger than that of carbon dioxide(CO2) over a century timescale. Methane emission is hypothesized to have contributed to global climate change events and mass extinctions during Earth's history. Therefore, the study of CH_4 production processes is critically important to the understanding of global climate change. It has been a dogma that biogenic CH_4 detectable in the oceans originates exclusively from the anaerobic metabolic activity of methanogenic archaea in hypoxic and anoxic environments, despite reports that many oxic surface and near-surface waters of the world's oceans are CH_4-supersaturated, thereby rendering net sea-to-air emissions of CH_4. The phenomenon of CH_4 production in oxic marine waters is referred to as the "ocean methane paradox". Although still not totally resolved, recent studies have generated several hypotheses regarding the sources of CH_4 production in oxic seawater. This review will summarize our current understanding of the importance of CH_4 in the global climate and analyze the biological processes and their underpinning mechanisms that lead to the production of CH_4 in oxic seawater environments. We will also tentatively explore the relationships of these microbial metabolic processes with global changes in climate and environment.

关键词： Ocean methane paradox Gas hydrate Marine particles Methylphosphonate DSMP Global warming Ocean deoxygenation Ocean acidification

New development of anodizing process of magnesium alloys

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中国有色金属学会会刊：英文版 2004年第z1期14卷 120-125页

作者： BAI li-qun li Di School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China

Magnesium alloy, a kind of environment-friendly material with promising and excellent properties, is a good choice for a number of applications. The research and development of anodizing on magnesium alloys and its ap... 详细信息

关键词： magnesium magnesium alloy anodizing