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Squeezing Transformation of Three-Mode Entangled State

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Communications in Theoretical Physics 2005年第5X期44卷 911-916页

作者： qian Xiao-Qing song Tong-qiang Department of Physics Ningbo University Ningbo 315211 China

We introduce the three-mode entangled state and set up an experiment to generate it. Then we discuss the three-mode squeezing operator squeezed ｜p, X2, X3〉→μ^-3/2｜p/μ, X2/μ, X3/μ） and the optical implement to realize such a squeezed state. We also reveal that c-number .asymmetric shrink transform in the three-mode entangled state, i.e. ｜p, X2,X3）→μ^-1/2｜p/μ, X2,X3）, maps onto a kind of one-sided three-mode squeezing operator {iλ （∑i^3=1 Pi）（∑i^3=1 Qi） -λ/2}. Using the technique of integration within an ordered product （IWOP） of operators, we derive their normally ordered forms and construct the corresponding squeezed states.

关键词： three-mode entangled state c-number asymmetric shrink transform one-sided three-mode squeezing operator

Recent advances in the development of organic photothermal nano-agents

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Nano Research 2015年第2期8卷 340-354页

作者： Xuejiao song qian Chen Zhuang Liu Institute of Functional Nono & Soft Materials (FUNSOM) Collaborative Innovation Center of 5uzhou Nano Science and TechnologySoochow University Suzhou 215123 Chino

Recently, photothermal therapy （PTT） has attracted tremendous attention because of its high efficacy in tumor ablation and minimal damage to normal tissues. While many inorganic nanomaterials, especially various gold nanostructures and nanocarbons, have been extensively explored for near-infrared （NIR） light triggered PTT in the past decade, a variety of organic photothermal agents have also emerged in recent years, aiming at replacing their inorganic counterparts which usually are not biodegradable. In this mini-review, we will summarize several typical classes of recently developed NIR-absorbing organic PTT nano- agents, which include NIR dye-containing micelles, porphysomes, protein-based agents, conjugated polymers, and organic/inorganic nanocomposites. The development of imaging-guided PTT and combination therapy will be introduced as well. Finally, the perspectives and challenges in the future development of PTT will be discussed.

关键词： photothermal therapy near-infrared organic nanomaterials

Characterization of 4-Aryl-5-ethoxycarbonyl-6-methyl-3,4-dihydro-pyrimidin-2(1H)-thiones by EI-TOF Mass Spectrometry

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Chemical Research in Chinese Universities 2006年第1期22卷 40-44页

作者： LI qian-rong XUE song YIN Hao Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 P. R. China

The electron impact （EI） time-of-flight mass spectra （TOFMS） of the title compounds （ thioxo-Biginelli compounds） were studied to establish their fragmentation pathways. With a TOF instrument of high resolution, the exact mass for each fragment was determined. These data were used to infer the molecular formulas and the ionic elemental compositions for all the compounds through interpretation by software. By further applying chemical intuition, majority of the fragmentation ions were fully assigned. All the compounds give strong signals（ average 76% ） for their molecular ions in the El spectra. Two kinds of characteristic fragmentation pathways from the molecular ion were observed. One is related to the loss of the ester group, forming a resonance stabilized ion with a moderate abundance（ average 40% ）. The other concerns the loss of the aromatic-ring radical, forming another resonance stabilized ion at m/z 199 with a high abundance（ average 79% ）, from which further important fragmentations including the formation of an ion at m/z 171 （average 24% ） by the loss of C2H2 （via the McLafferty rearrangement）, and an ion at m/z 153（ average 10% ） by the elimination of a water molecule preceed. In addition, ion [ M - Et ]^＋ with a high abundance（average 62% ） is a characteristic for the Biginelli compounds with an ethoxycarbonyl group. Differences and similarities among the fragmentations observed from the EI-TOFMS of oxo-Biginelli compounds are discussed.

关键词： Beginelli compound 3,4-Dihydropyrimidinthione Time-of-flight mass spectrometry Electron impact

TRIPLET combined with microwave ablation:A novel treatment for advanced hepatocellular carcinoma

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 10-12页

作者： Fei-Yu Zhao Guo-Wei Si Nian-song qian Department of Thoracic Oncology Respiratory and Critical Care MedicineThe Eighth Medical Center of People’s Liberation Army General HospitalBeijing 100853China Department of Gastroenterology Fourth Medical CentreGeneral Hospital of the People's Liberation ArmyBeijing 100142China Senior Department of Thoracic Oncology Respiratory and Critical Care MedicineThe Eighth Medical Center of People’s Liberation Army General HospitalBeijing 100091China

This editorial comments on a study by Zuo et *** focus is on the efficacy of he-patic arterial infusion chemotherapy combined with camrelizumab and apatinib(the TRIPLET regimen),alongside microwave ablation therapy,in treating advanced hepatocellular carcinoma(HCC).The potential application of this combination therapy for patients with advanced HCC is evaluated.

关键词： Microwave ablation Hepatic arterial infusion chemotherapy Apatinib Camrelizumab Hepatocellular carcinoma

Synthesis of Methyl Glycolate by Hydrogenation of Dimethyl Oxalate over Cu-Ag/SiO_2 Catalyst

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Journal of Natural Gas Chemistry 2007年第1期16卷 78-80页

作者： Baowei Wang qian Xu Hua song Genhui Xu School of Chemical Engineering and Technology Key Lab for Green Chemical Technology Tianjin University Tianjin 300072 China

Methyl glycolate is a good solvent and can be used as feedstock for the synthesis of some important organic chemicals. Catalytic hydrogenation of dimethyl oxalate （DMO） over copper-silver catalyst supported on silica was studied. The Cu-Ag/SiO2 catalyst supported on silica sol was prepared by homogeneous deposition-precipitation of the mixture of aqueous euprammonia complex and silica sol. The proper active temperature of Cu-Ag/SiO2 catalyst for hydrogenation of DMO was 523-623 K. The most preferable reaction conditions for methyl glycolate （MG） were optimized： temperature at 468-478 K, 40-60 mesh catalyst diameter, H2/DMO ratio 40, and 1.0 h^-1 of LHSV.

关键词： dimethyl oxalate methyl glycolate ethylene glycol hydrogenation Cu-Ag/SiO2 catalyst

Semi-empirical and semi-quantitative lightweight shielding design method

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Nuclear Science and Techniques 2023年第3期34卷 109-124页

作者： song-Chuan Zheng Qing-Quan Pan Huan-Wen Lv song-qian Tang Xiao-Jing Liu College of Smart Energy Shanghai Jiao Tong UniversityShanghai 200240China School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610200China

The lightweight shielding design of small reactors is a popular research *** on a small helium-xenon-cooled solid reactor,the effects of neutron and photon shielding sequence and the number of shielding layers on the radiation dose were first *** was found that when photons were shielded first and the number of shielding layers was odd,the radiation dose could be significantly *** reduce the weight of the shielding body,the relative thickness of the shielding layers was optimized using the genetic *** optimized scheme can reduce the radiation dose by up to 57%and reduce the weight by 11.84%.To determine the total thickness of the shielding layers and avoid the local optimal solution of the genetic algorithm,a series of formulas that describes the relationship between the total thickness and the radiation dose was developed through large-scale calculations.A semi-empirical and semi-quantitative lightweight shielding design method is proposed to integrate the above shielding optimization method that verified by the Monte Carlo ***,a code,SDIC1.0,was developed to achieve the optimized lightweight shielding design for small *** was verified that the difference between the SDIC1.0 and the RMC code is approximately 10%and that the computation time is shortened by 6.3 times.

关键词： Small reactor Lightweight Shielding calculation Genetic algorithm

A Preliminary Analysis of Trace-Elemental Signatures in Statoliths of Different Spawning Cohorts for Dosidicus gigas off EEZ Waters of Chile

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Journal of Ocean University of China 2015年第6期14卷 1059-1067页

作者： LIU Bilin CHEN Xinjun FANG Zhou HU song song qian College of Marine Sciences Shanghai Ocean University Collaborative Innovation Center for Distant-Water Fisheries The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources Ministry of Education National Engineering Research Center for Oceanic Fisheries Shanghai Ocean University Collaborative Innovation Center for National Distant-water Fisheries

We applied solution-based ICP-MS method to quantify the trace-elemental signatures in statoliths of jumbo flying squid, Dosidius gigas, which were collected from the waters off northern and central Chile during the scientific surveys carried out by Chinese squid jigging vessels in 2007 and 2008. The age and spawning date of the squid were back-calculated based on daily increments in statoliths. Eight elemental ratios(Sr/Ca, Ba/Ca, Mg/Ca, Mn/Ca, Na/Ca, Fe/Ca, Cu/Ca and Zn/Ca) were analyzed. It was found that Sr is the second most abundant element next to Ca, followed by Na, Fe, Mg, Zn, Cu, Ba and Mn. There was no significant relationship between element/Ca and sea surface temperature(SST) and sea surface salinity(SSS), although weak negative or positive tendency was found. MANOVA analysis showed that multivariate elemental signatures did not differ among the cohorts spawned in spring, autumn and winter, and no significant difference was found between the northern and central sampling locations. Classification results showed that all individuals of each spawned cohorts were correctly classified. This study demonstrates that the elemental signatures in D. gigas statoliths are potentially a useful tool to improve our understanding of its population structure and habitat environment.

关键词： jumbo flying squid element/Ca off EEZ waters of Chile solution-based ICP-MS environmental variables

Counterparty risk valuation on credit-linked notes under a Markov Chain framework

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Applied Mathematics(A Journal of Chinese Universities) 2021年第1期36卷 31-50页

作者： JIANG Ting-ting qian Xiao-song George Xian-zhi Yuan Center for Financial Engineering Soochow UniversitySuzhou 215006China Postdoctoral Scientific Research Station Xiamen International BankXiamen 361000China School of Management Xiamen UniversityXiamen 361000China School of Mathematical Sciences Soochow UniversitySuzhou 215006China Business School Chengdu UniversityChengdu 610106China Shanghai Lixin University of Accounting and Finance Shanghai 201620China Business School Sun Yat-Sen UniversityGuangzhou 510275China

A credit-linked note(CLN)is a note paying an enhanced coupon to investors for bearing the credit risk of a reference *** this paper,we study the counterparty risk on CLNs under a Markov chain framework,and introduce a Markov copula model to describe joint defaults between the reference entity underlying the CLN and CLN *** that the respective default intensities are directly and inversely proportional to the interest rate,which follows a CIR process,we obtain the explicit formulae for CLN values through a PDE ***,credit valuation adjustment(CVA)formula is derived to price counterparty credit risk.

关键词： credit-linked notes(CLNs) Markov copula PDE CVA

Chimera states in Gaussian coupled map lattices

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Frontiers of physics 2018年第2期13卷 39-42页

作者： Xiao-Wen Li Ran Bi Yue-Xiang Sun Shuo Zhang qian-qian song Department of Physics Beijing Normal University Beijing 100875 China

We study chimera states in one-dimensional and two-dimensional Gaussian coupled map lattices through simulations and experiments. Similar to the case of global coupling oscillators, individual lattices can be regarded as being controlled by a common mean field. A space-dependent order pa- rameter is derived from a self-consistency condition in order to represent the collective state.

关键词： chimera state coupled map lattices nonlocal coupling