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Solving local constraint condition problem in slave particle theory with the BRST quantization

Communications in Theoretical Physics 2023年第9期75卷 173-181页

作者： Xi Luo jianqiao liu Yue Yu College of Science University of Shanghai for Science and TechnologyShanghai 200093China Department of Physics Fudan UniversityShanghai 200433China

With the Becchi-Rouet-Stora-Tyutin(BRST) quantization of gauge theory,we solve the long-standing difficult problem of the local constraint conditions,i.***.the single occupation of a slave particle per site,in the slave particle theory.This difficulty is actually caused by inconsistently dealing with the local Lagrange multiplier λ_(i) which ensures the constraint:in the Hamiltonian formalism of the theory,λ_(i) is time-independent and commutes with the Hamiltonian while in the Lagrangian formalism,λ_(i)(t) becomes time-dependent and plays a role of gauge field.This implies that the redundant degrees of freedom of λ_(i)(t) are introduced and must be removed by the additional constraint,the gauge fixing condition(GFC) ?_tλ_(i)(t)= 0.In literature,this GFC was missed.We add this GFC and use the BRST quantization of gauge theory for Dirac's first-class constraints in the slave particle theory.This GFC endows λ_(i)(t) with dynamics and leads to important physical results.As an example,we study the Hubbard model at half-filling and find that the spinon is gapped in the weak U and the system is indeed a conventional metal,which resolves the paradox that the weak coupling state is a superconductor in the previous slave boson mean field(MF) theory.For the t-J model,we find that the dynamic effect of λ_(i)(t) substantially suppresses the d-wave pairing gap and then the superconducting critical temperature may be lowered at least a factor of one-fifth of the MF value which is of the order of 1000 K.The renormalized T_c is then close to that in cuprates.

关键词： slave particle BRST gauge theory high T_c superconductivity Hubbard model t–J model

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Highly efficient and precise base editing in discarded human tripronuclear embryos

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Protein & Cell 2017年第10期8卷 776-779页

作者： Guanglei Li Yajing liu Yanting Zeng Jianan Li Lijie Wang Guang Yang Dunjin Chen Xiaoyun Shang Jia Chen Xingxu Huang jianqiao liu Department of Reproductive Medicine Third Affiliated Hospital ( Guangzhou Medical University Guangzhou 510150 China School of Life Science and Technology ShanghaiTech University Shanghai 201210 China Institute of Immunology PLA Third Military Medical University Chongqing 400038 China Key Laboratory for Reproduction and Genetics of Guangdong Higher Education Institutes Key Laboratory for Major Obstetric Diseases of Guangdong Province Third Affiliated Hospital of Guangzhou Medical University Guangzhou 510150 China

CRISPR/Cas9 is a powerful tool for genome editing （Komor et al., 2017）. Recently, it has been employed in several attempts to edit the human embryos （Liang et al., 2015; Kang et al., 2016; Tang et al., 2017）.

关键词： GENOME NUCLEASES CLEAVAGE ZYGOTES

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构建科技成果管理体系,助力大型央企科技创新

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中国核电 2024年第2期17卷 259-263页

作者：刘建桥周觅中国核学会中国核工业集团有限公司

构建科技成果管理体系对于促进大型央企科技创新具有重要意义。这一体系不仅是国家促进科技创新的战略需要，也是国防科技工业高质量发展的保障，更是央企自身创新发展的关键要素。本文以中核集团为例，详述了有助于大型央企科技创新的... 详细信息

构建科技成果管理体系对于促进大型央企科技创新具有重要意义。这一体系不仅是国家促进科技创新的战略需要，也是国防科技工业高质量发展的保障，更是央企自身创新发展的关键要素。本文以中核集团为例，详述了有助于大型央企科技创新的成果管理体系的内涵、主要做法及实施效果。

关键词：科技成果管理大型央企科技创新

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Practice and Exploration of Mixed Teaching of Microelectronics

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Journal of Electronic Research and Application 2022年第5期6卷 15-18页

作者： jianqiao liu Zhaoxia Zhai Haichao Wei Yang Wang Guohua Jin Ce Fu Xinnian Wang Sheng Bi Dalian Maritime University Dalian 116026Liaoning ProvinceChina

The mixed teaching mode plays an increasingly important role in stimulating students’interest and autonomy in learning,and strengthening students’learning ability.The full integration of mixed teaching mode and microelectronics teaching can not only achieve the teaching objectives smoothly,but also enable students to deepen their understanding and memory of relevant knowledge with the help of diversified and interesting teaching methods.Therefore,this paper takes the microelectronics course as an example to practice and explore the effective ways to carry out the mixed teaching mode.Teachers should not make full use of online and offline teaching resources,but also actively improve the traditional assessment systems.Through the continuous improvement of the practicality of online and offline teaching content,an easy-to-complex teaching method with a coherent content structure can be adopted to stimulate students’learning motivation,improve their enthusiasm for participation,and lay a solid foundation for further improvements in the teaching of microelectronics technology.

关键词： Microelectronic technology Mixed teaching Learning needs Learning enthusiasm Learning motivation

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Genome wide abnormal DNA methylome of human blastocyst in assisted reproductive technology

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Journal of Genetics and Genomics 2017年第10期44卷 475-481页

作者： Guoqiang Li Yang Yu Yong Fan Congru Li Xiaocui Xu Jialei Duan Rong Li Xiangjin Kang Xin Ma Xuepeng Chen Yuwen Ke Jie Yan Ying Lian Ping liu Yue Zhao Hongcui Zhao Yaoyong Chen Xiaofang Sun jianqiao liu Jie Qiao Jiang liu Ministry of Education Key Laboratory of Assisted Reproduction Beijing Key Laboratory of Reproductive Endocrinology and Assisted ReproductiveTechnology Center of Reproductive Medicine Peking University Third Hospital Beijing 100191 China GAS Key Laboratory of Genome Sciences and Information Collaborative Innovation Center of Genetics and Development Beijing Institute of GenomicsGAS Beijing 160101 China Key Laboratory for Major Obstetric Diseases of Guangdong Province The Third Affiliated Hospital of Guangzhou Medical University Guangzhou 510150China University of Chinese Academy of Sciences Beijing 100029 China

Proper reprogramming of parental DNA methylomes is essential for mammalian embryonic development. However, it is unknown whether abnormal methylome reprogramming occurs and is associated with the failure of embryonic development. Here we analyzed the DNA methylomes of 57 blastocysts and 29 trophectoderm samples with different morphological grades during assisted reproductive technology （ART） practices. Our data reveal that the global methylation levels of high-quality blastocysts are similar （0.30 ± 0.02, mean ± SD）, while the methylation levels of low-quality blastocysts are divergent and away from those of high-quality blastocysts. The proportion of blastocysts with a methylation level falling within the range of 0.30± 0.02 in different grades correlates with the live birth rate for that grade. Moreover, abnormal methylated regions are associated with the failure of embryonic development. Furthermore, we can use the methylation data of cells biopsied from trophectoderm to predict the blastocyst methylation level as well as to detect the aneuploidy of the blastocysts. Our data indicate that global abnormal methylome reprogramming often occurs in human embryos, and suggest that DNA methylome is a potential biomarker in blastocyst selection in ART.

关键词： Human Abnormal Blastocyst Methylome ART

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4种不同居群半夏在林下种植的适宜性比较

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林业科技通讯 2024年第1期 72-74页

作者：刘建桥朱晓花刘西苑李燕骄湖南省邵阳市草地资源保护中心湖南邵阳422000

在林下用沙壤土盆栽种植4种不同居群半夏(Pinellia ternata),测定4种不同居群半夏在林下的发芽指标、农艺性状、抗氧化能力,以进一步比较4种不同居群半夏在林下种植的优劣及改善方式。结果发现A居群半夏的综合发芽能力最佳,A和C居群半... 详细信息

在林下用沙壤土盆栽种植4种不同居群半夏(Pinellia ternata),测定4种不同居群半夏在林下的发芽指标、农艺性状、抗氧化能力,以进一步比较4种不同居群半夏在林下种植的优劣及改善方式。结果发现A居群半夏的综合发芽能力最佳,A和C居群半夏的农艺性状综合优于B和D,A居群半夏抗氧化能力最强,结果说明4种不同居群半夏中,A(四川南充)和C(河北保定)2个居群半夏在林下种植综合性状更优良,更适宜在林下种植。

关键词：半夏 Pinellia ternata 不同居群抗氧化能力林下经济

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Design and Implementation of Medical Data Management System

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国际计算机前沿大会会议论文集 2017年第1期 167-169页

作者： Jie Wang jianqiao liu Jian Li Jian Zhang Qi Lei School of Information Science and Engineering Central South UniversityChangsha 410083China The Second Xiangya Hospital Central South UniversityChangsha 410011China

At present,with the development of medical technology,the amount of medical data is increasing,in face of the shortcomings like the complexity of information,lack of structure,flexible changes,as well as the lack of scientific medical data management platforms at home and abroad,this paper presents a child epilepsy Data platform.This platform can extract quantitative data of structural epilepsy from the description of the complex and redundant text,which makes the data analysis and data mining more convenient and provides the basis for the future intelligent diagnosis,prediction and intelligent prognosis of epilepsy.At the same time,this paper introduces the platform database,server language and the construction of back-end and front-end of platform.The paper also introduces the technology and method of data-oriented management platform from requirement analysis,platform design to implementation stage.Through continuous testing and communication with doctors,developers finally established a data-driven system that is efficient in storing,managing and transferring and exporting medical data,which is also expandable,robust and stable.

关键词： Medical data Epilepsy disease Data-driven Medical management platform

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Estimation of free core nutation parameters and availability of computing options

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Geodesy and Geodynamics 2024年第1期15卷 61-74页

作者： Weiwei Yang Xiaoming Cui jianqiao Xu Qingchao liu Ming Qin State Key Laboratory of Geodesy and Earth's Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China University of Chinese Academy of Sciences Beijing 100049China Hubei Luojia Laboratory Wuhan 430079China

The Earth’s Free Core Nutation(FCN) causes Earth tides and forced nutation with frequencies close to the FCN that exhibit resonance effects.High-precision superconducting gravimeter(SG) and very long baseline interferometry(VLBI) provide good observation techniques for detecting the FCN parameters.However,some choices in data processing and solution procedures increase the uncertainty of the FCN parameters.In this study,we analyzed the differences and the effectiveness of weight function and ocean tide corrections in the FCN parameter detection using synthetic data,SG data from thirty-one stations,and the 10 celestial pole offset(CPO) series.The results show that significant discrepancies are caused by different computing options for a single SG station.The stacking method,which results in a variation of0.24-5 sidereal days(SDs) in the FCN period(T) and 10^(3)-10^(4) in the quality factor(Q) due to the selection of the weighting function and the ocean tide model(OTM),can effectively suppress this influence.The statistical analysis results of synthetic data shows that although different weight choices,while adjusting the proportion of diurnal tidal waves involved,do not significantly improve the accuracy of fitted FCN parameters from gravity observations.The study evaluated a series of OTMs using the loading correction efficiency.The fitting of FCN parameters can be improved by selecting the mean of appropriate OTMs based on the evaluation results.Through the estimation of the FCN parameters based on the forced nutation,it was found that the weight function P_(1) is more suitable than others,and different CPO series(after 2009) resulted in a difference of 0.4 SDs in the T and of 103 in the Q.We estimated the FCN parameters for SG(T=430.4±1.5 SDs and Q=1.52×10^(4)±2.5×10^(3)) and for VLBI(T=429.8±0.7 SDs,Q=1.88×10^(4)±2.1×10^(3)).

关键词： Free core nutation Superconducting gravimeter Very long baseline interferometry Weight function Ocean tide model

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MXene Hollow Spheres Supported by a C–Co Exoskeleton Grow MWCNTs for Efficient Microwave Absorption

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Nano-Micro Letters 2024年第6期16卷 76-94页

作者： Ze Wu Xiuli Tan jianqiao Wang Youqiang Xing Peng Huang Bingjue Li Lei liu School of Mechanical Engineering Southeast UniversityNanjing 211189People’s Republic of China

High-performance microwave absorption(MA) materials must be studied immediately since electromagnetic pollution has become a problem that cannot be disregarded. A straightforward composite material, comprising hollow MXene spheres loaded with C–Co frameworks, was prepared to develop multiwalled carbon nanotubes(MWCNTs). A high impedance and suitable morphology were guaranteed by the C–Co exoskeleton, the attenuation ability was provided by the MWCNTs endoskeleton, and the material performance was greatly enhanced by the layered core–shell structure. When the thickness was only 2.04 mm, the effective absorption bandwidth was 5.67 GHz, and the minimum reflection loss(RLmin) was-70.70 d B. At a thickness of 1.861 mm, the sample calcined at 700 ℃ had a RLmin of-63.25 d B. All samples performed well with a reduced filler ratio of 15 wt%. This paper provides a method for making lightweight core–shell composite MA materials with magnetoelectric synergy.

关键词： MXene C-Co skeleton MWCNTs Microwave absorption

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湖南省现代牧草产业发展现状

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草原与草业 2024年第1期36卷 45-50页

作者：朱晓花江世高刘建桥刘西苑李燕骄肖怀治湖南省邵阳市草地资源保护中心邵阳422000

湖南是全国南方草地资源大省,也是南方现代草食畜牧业等项目实施重点区域,更是全国牛羊产业发展实现增产增肉的核心区域。近年来,在省委、省政府的正确领导下,我省草食畜牧业发展取得了可喜的成就,截至2020年底,全省人工种草面积达10万h... 详细信息

湖南是全国南方草地资源大省,也是南方现代草食畜牧业等项目实施重点区域,更是全国牛羊产业发展实现增产增肉的核心区域。近年来,在省委、省政府的正确领导下,我省草食畜牧业发展取得了可喜的成就,截至2020年底,全省人工种草面积达10万hm^(2),实现牛存栏438.1万头,羊存栏761.2万只,家禽存笼37688.5万羽,牛出栏174.6万头,羊出栏983.3万只,家禽出笼54403.6万羽,牛奶产量5.6万吨。但目前,我省草食畜牧业发展中面临牛羊牧草良种严重缺乏,科技支撑力不强,产业化程度不高等问题,如何突破以上瓶颈,更好地推进我省草食畜牧牧业向规模质量效益型转型升级,实现千亿产业发展目标,是一项重大的战略任务,是为湖南经济、社会的可持续发展和生态环境建设注入新活力的有效途径。

关键词：湖南现代牧草产业畜牧业

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