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Communications in Theoretical Physics 2008年第10期50卷 879-882页

作者： hu Li-yun FAN Hong-yi Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

By virtue of the Weyl correspondence and based on the the technique of integration within an ordered product of operators, we show under what condition the superoperator＇s Kraus representation p^1=∑μAμpA^＋μ can be deformed as p＇= （1/π） ∫ d^2d^2α（α）D（α）D（α）pD^＋（α）, where D（α） is the displacement operator, B（α） is a probability density related to the classical Weyl correspondence of Aμ. An alternate discussion by using the entangled state representation and through a quantum teleportation process is also presented.

关键词： Weyl correspondence entangled state representation superoperator Kraus representation

Near-perfect replication on amorphous alloys through active force modulation based on machine learning/neural network parameter prediction

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 181-191页

作者： Senkuan Meng Zheng Wang Ruisong Zhu Ruijie Liu Jiang Ma Lina hu Weihua Wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) School of Materials Science and Engineering Shandong University College of Mechatronics and Control Engineering Shenzhen University Songshan Lake Materials Laboratory Institute of Physics Chinese Academy of Sciences

As a microforming technique, micro/nano-structural replication possesses advantages of high precision and efficiency. With the remarkable superplasticity in the supercooled liquid region, amorphous alloys or metallic glasses(MGs) are regarded as ideal materials for miniature fabrication. However, due to the intrinsic metastable nature of supercooled liquids, the design of imprinting processes for MGs poses a challenge. In the past, process parameters have largely relied on trial-and-error *** this work, a low-frequency active force modulation system is employed to apply a stable, precise, and real-time feedback stress field for imprinting of MG samples. Low-frequency vibrations can facilitate the filling of microstructures on the template surface by reducing the effective viscosity of the supercooled liquid. With the dataset composed of orthogonal experiments, a machine learning strategy based on back-propagation(BP) neural networks was utilized to construct a 3D parameter space for temperature, stress, and time, and to predict the corresponding filling ratio. Furthermore, the optimal combination of imprinting process parameters was identified, and its filling ratio was experimentally validated to reach as high as 0.94. The near-perfect replication of microstructures confirms the superiority of the active force modulation system and the data-driven strategy of machine learning-assisted parameter design. At the same time, this one-step microforming process provides a new approach to addressing the accuracy-cost trade-off dilemma in precision manufacturing.

关键词： metallic glass amorphous alloy microforming imprinting machine learning

A Generalized Hankel Transformation Derived by Parametrized Entangled State Representations

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Communications in Theoretical Physics 2008年第7期50卷 85-88页

作者： FAN Hong-yi hu Li-yun Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

Using the parametrized entangled state representations we have found a generalized Hankel transformationwith the integral kernel being a combination of Bessel *** generalized Hankel transformation corresponds tothe ap... 详细信息

关键词： parametrized bipartite entangled state generalized Hankel transformation

Weyl Ordering Operator Formula Derived by IWOP Technique and Its Application for Fresnel Operator

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Communications in Theoretical Physics 2009年第11期52卷 840-844页

作者： FAN Hong-yi hu Li-yun Department of Physics Shanghai Jiao Tong University Shanghai 200030 China College of Physics and Communication Electronics Jiangxi Normal University Nanchang 330022 China

Based on the technique of integration within an ordered product of operators, the Weyl ordering operator formula is derived and the Fresnel operators＇ Weyl ordering is also obtained, which together with the Weyl tran... 详细信息

关键词： Weyl ordering operator IWOP technique Fresnel operator

Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Activation energy

大肠癌E-cadherin,β-catenin,MMP-7表达及其临床意义

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世界华人消化杂志 2007年第4期15卷 375-380页

作者：顾国利魏学明王石林任力郑爱民黄蓉蓉胡益云中国人民解放军空军总医院普通外科北京市100036 中国人民解放军空军总医院病理科北京市100036

目的:探讨大肠癌(CRC)中上皮钙黏附蛋白(E-cad)、β-连接素(β-cat)和基质金属蛋白酶-7(MMP-7)的表达水平,并分析三者的相互关系．方法:应用免疫组化方法检测60例CRC肿瘤组织标本和8例正常大肠组织标本中E-cad,β-cat和MMP-7的表达水平... 详细信息

目的:探讨大肠癌(CRC)中上皮钙黏附蛋白(E-cad)、β-连接素(β-cat)和基质金属蛋白酶-7(MMP-7)的表达水平,并分析三者的相互关系．方法:应用免疫组化方法检测60例CRC肿瘤组织标本和8例正常大肠组织标本中E-cad,β-cat和MMP-7的表达水平,分析E-cad,β-cat和MMP-7在二者中表达的差异,并结合其临床病理资料进行综合分析．结果:E-cad、正常β-cat、异常β-cat和MMP-7在CRC中的阳性表达率分别为73．3%(44/60), 66．7%(40/60),63．3%(38/60)和73．3%(44/60)．E-cad,β-cat和MMP-7的阳性表达率与患者的年龄、性别和肿瘤的大小、部位及分化类型均无关．而与肿瘤的侵犯深度和转移与否密切相关．E-cad和β-cat正常表达之间呈明显正相关(r=0．359,P=0．005)．β-cat正常表达和β-cat异常表达之间呈明显负相关(r=-0．324,P= 0．012)．β-cat异常表达和MMP-7之间呈明显正相关(r=0．487,P=0．000)．结论:E-cad,β-cat和MMP-7的表达与CRC的侵袭转移和预后密切相关,可作为判定CRC预后的有效指标．

关键词：大肠癌基质金属蛋白酶-7 上皮钙黏附蛋白 β-连接素组织病理免疫组化

遗传性非息肉病性大肠癌组织E-cad，β-cat和MMP-7表达在侵袭转移中的作用

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世界华人消化杂志 2007年第18期15卷 2031-2036页

作者：顾国利魏学明王石林任力周晓武李德昌胡益云中国人民解放军空军总医院普通外科北京市100036 中国人民解放军空军总医院病理科北京市100036

目的:探讨上皮钙黏附蛋白(E-cad)、β-连接素(β-cat)和基质金属蛋白酶-7(MMP-7)在遗传性非息肉病性大肠癌(HNPCC)和散发性大肠癌(sporadic CRC)的表达及与遗传性非息肉病性大肠癌(HNPCC)侵袭转移间的关系.方法:应用免疫组化SP法检测HNP... 详细信息

目的:探讨上皮钙黏附蛋白(E-cad)、β-连接素(β-cat)和基质金属蛋白酶-7(MMP-7)在遗传性非息肉病性大肠癌(HNPCC)和散发性大肠癌(sporadic CRC)的表达及与遗传性非息肉病性大肠癌(HNPCC)侵袭转移间的关系.方法:应用免疫组化SP法检测HNPCC(n= 30)、散发性大肠癌(sporadic CRC)(n=30)和正常大肠黏膜(n=8)中E-cad,β-cat和MMP-7的表达情况.结果:E-cad和胞膜表达β-cat在HNPCC中的阳性表达率高于其在sporadic CRC中的表达率(E-cad:86.7% vs 60.0%:胞膜β-cat:83-3% vs 50.0%,均P0.05).两组中E-cad,胞膜表达β-cat,胞质表达β-cat,MMP-7的阳性表达率与患者的性别和肿瘤的大小、部位及分化类型均无关:而与肿瘤的侵犯深度和转移与否密切相关(r=0.732、P<0.05).E-cad与胞膜表达β-cat呈正相关(r=0.477,P<0.05),胞膜表达β-cat与胞质表达β-cat呈负相关(r=-0.419,P<0.05),而胞质表达β-cat与MMP-7呈正相关(r=0.380,P<0.05).结论:E-cad,β-cat和MMP-7在HNPCC和sporadicc CRC中的阳性表达率差异显著.可能是HNPCC在获得诊断时侵袭弱、转移少和预后较好的原因之一.

关键词：遗传性非息肉病性大肠癌散发性大肠癌上皮钙黏附蛋白 β-连接素基质金属蛋白酶-7 病理免疫组化

Organic Brønsted Acid-Catalyzed Stereoselective Cationic RAFT Polymerization:The Effect of RAFT Agents

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Chinese Journal of Polymer Science 2024年第6期42卷 711-717页

作者： Zheng-yi Zhang Zan Yang yun Liao Sai-hu Liao Key Laboratory of Molecule Synthesis and Function Discovery(Fujian Province University) College of ChemistryFuzhou UniversityFuzhou350108China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Beijing National Laboratory for Molecular Sciences Beijing100190China

The tacticity of vinyl polymers is a key factor affecting the properties of ***,organic Brønsted acids have been demonstrated as effective catalysts for the development of highly stereoselective cationic reversible addition-fragmentation chain transfer(RAFT)polymerizations of vinyl ethers,in which the use of RAFT agents could allow the control the molecular weight and tacticity of polymer products ***,the effect of RAFT agents on the tacticity-regulation remains elusive and lacks of *** this study,we synthesized four types of RAFT agents and evaluated their influence in the stereoselective cationic polymerization of isobutyl vinyl ether in the presence of PADI as a Brønsted acid catalyst,which unveils that the Z group of RAFT agents could not only affect the polydispersity of the products,but also exert a profound effect on the *** extensive screening of the RAFT agents,high stereoregularity(isotacticity,90%m)was obtained when using dithiocarbonate ester-type RAFT agents with a benzyloxy Z group.

关键词： Bronsted acid catalysis Stereoselective cationic polymerization RAFT polymerization Chain transfer agents Tacticity

Evolution of the single-mode squeezed vacuum state in amplitude dissipative channel

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Frontiers of physics 2014年第1期9卷 74-81页

作者： Hong-yi Fan Shuai Wang Li-yun hu Department of Physics Ningbo University Ningbo 315211 China School of Mathematics and Physics Changzhou University Changzhou 213164 China Department of Physics Jiangxi Normal University Nanchang 330022 China

Using the way of deriving infinitive sum representation of density operator as a solution to the master equation describing the amplitude dissipative channel by virtue of the entangled state representation, we show manifestly how the initial density operator of a single-mode squeezed vacuum state evolves into a definite mixed state which turns out to be a squeezed chaotic state with decreasing-squeezing and deeoherence. We investigate average photon number, photon statistics distributions for this mixed state.

关键词： single-mode squeezed vacuum decoherence entangled state representation sum repre-sentation

Multicomponent polymerization of elemental sulfur,difluoromethylene phosphobetaine and aryl silyl ethers toward aromatic poly(O,O′-monothiocarbonate)s

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Science China Chemistry 2025年

作者： Yongjiang Yu Rongrong hu Ben Zhong Tang State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of Technology School of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong Kong AIE Institute

Polythiocarbonates with similar structures to polycarbonates, have emerged as a group of promising sulfur-containing polymers with a range of practical applications, taking advantages of their excellent optical properties, good thermal stability and filmforming ability, and so on. However, the synthesis of polythiocarbonates generally suffered from mixed isomeric structures of repeating units, and hazardous sulfur-containing reagents. In this work, an efficient multicomponent reaction of elemental sulfur,difluoromethylene phosphobetaine（PDFA）, and aryl silyl ethers was designed with the assistance of organic base 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene（MTBD） to produce 12 kinds of O,O′-monothiocarbonate compounds in up to 93% yields,taking advantages of the unique chemical property of difluorocarbene, and the deprotection of silyl group by F-generated from PDFA. Most importantly, the MTBD-assisted multicomponent polymerization of bis（aryl silyl ether）s, elemental sulfur, and PDFA was developed, affording 12 kinds of poly（O,O′-monothiocarbonate）s with well-defined structures, high Mws of up to16900 g/mol and high yields（up to 99%）. These poly（O,O′-monothiocarbonate）s possessed good film-forming properties and thermal stability, high light refractive indices and transmittance. The facile synthesis of these polymonothiocarbonates might pave the way for the development of promising sulfur-containing polymer materials.

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