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Nonreciprocal Single Photon Frequency Conversion via Chiral Coupling between a V-Type System and a Pair of Waveguides

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Chinese Physics Letters 2018年第5期35卷 34-38页

作者： Ce Shi Mu-tian cheng Xiao-San Ma Dong Wang Xianshan Huang Bing Wang Jia-Yan Zhang School of Electrical Engineering and Information Anhui University of TechnologyMaanshan 243002 School of Mathematics and Physics Anhui University of TechnologyMaanshan 243002 Anhui Provincial Key Lab of Power Electronics ＆ Motion Control Anhui University of TechnologyMaanshan 243002

The single photon frequency conversion is investigated theoretically in the system composed of a V-type system chiral coupling to a pair of waveguides. The single photon scattering amplitudes are obtained using the real-space Hamiltonian. The calculated results show that the probability of single photon frequency down-or up-conversion can reach a unit by choosing appropriate parameters in the non-dissipative system with perfect chiral *** present a nonreciprocal single photon beam splitter whose frequency of the output photon is different from that of the input photon. The influences of dissipations and non-perfect chiral coupling on the single frequency conversion are also shown. Our results may be useful in designing quantum devices at the single-photon level.

关键词： Nonreciprocal Single Photon Frequency Conversion via Chiral Coupling between a V-Type System and a Pair of Waveguides

Development of Intelligent Acupuncture Applications and Related Technologies

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World Journal of Traditional Chinese Medicine 2023年第1期9卷 21-28页

作者： Yun-Fan Bao Zhi-Han Zhang Hui-Ying Yu Xiang-Ning Huo Yang Lu tian-cheng Xu Key Laboratory of Acupuncture and Medicine Research of Ministry of Education Nanjng University of Chinese MedicineNanjingChina Institute of Life Science and Chemical Engineering Jiangsu Second Normal UniversityNanjingChina Institute of Pharmacy Macao Macao University of Science and TechnologyMacaoChina

The study focuses on developing mobile applications based on intelligent acupuncture, classified into education and intelligent diagnosis and treatment. The mobile application function is divided into two directions: assisting acupoint positioning and perfecting acupoint knowledge system. The study does a relative review on Android and IOS, showing that the number of Android users is rather more prevailing than IOS. It suggests that intelligent acupuncture mobile applications should comply with the trend of acupuncture globalization in the future, developing multilingual versions. Further, the content should be characterized by the experience of different famous doctors to avoid homogenization. Technically, intelligent applications should continue to develop three-dimensional and augmented reality technology, to optimize the accuracy of acupoint positioning.

关键词： Acupuncture intelligent diagnosis and treatment mobile application

Study on low noise cryogenic charge readout electronics for liquid xenon time projection chamber

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Radiation Detection Technology and Methods 2021年第1期5卷 71-77页

作者： Xing-cheng tian Xiao-shan Jiang Wen-huan Wu Huai-shen Li Wei Wei Jun Hu State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China University of Chinese Academy of Sciences(UCAS) Beijing 100049China China Spallation Neutron Source Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Dongguan 523803China

Background Liquid xenon time projection chamber(LXe TPC)is widely used in high-energy physics experiments such as particle detection and neutrino(or neutrinoless)double beta *** charge readout accuracy of the LXeTPCdirectly affects the measurement results and success of the *** liquid xenon needs to maintain a cryogenic temperature between 162 and 165 K at atmospheric pressure,the charge generated in the LXe TPC always needs to be read out in the cryogenic environment for minimizing the input capacitance,which has effect in determining the output noise of the charge *** Design a charge readout electronics system applicable to LXe TPC and research a data analysis method to get the exact amount of charge by analyzing the waveform at that output of the designed electronics *** Design a multi-channel charge-reading application specific integrated circuit(ASIC)that can operate in the cryogenic *** signals and power supply of the ASIC are connected to an electronics system at room temperature through micro-coaxial *** electronics at room temperature complete the sampling of the ASIC output.A data acquisition device receives the sampled waveform data and calculates the charge measurement resolution by Gaussian *** The designed ASIC and selected micro-coaxial cable can work in stable condition under the cryogenic environment of 165 *** analyzed integral nonlinearity of the charge measurement of the chip is 0.83%in the range from 1 to 50 fC,and the charge measurement resolution of the chip is lower than 900 e−*** In this paper,a preliminary study of the charge readout method based on the system structure of self-developed ASIC,micro-coaxial cable,and data readout electronics is completed for LXe *** system test results indicate that the designed ASIC can work normally in the cryogenic temperature of 165 K with a high dynamic range and good linearity of the charge ***

关键词： nEXO Cryogenic ASIC Micro-coaxial cable Gaussian fitting

Slow-pull and different conventional suction techniques in endoscopic ultrasound-guided fine-needle aspiration of pancreatic solid lesions using 22-gauge needles

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World Journal of Gastroenterology 2016年第39期22卷 8790-8797页

作者： Jia-Ying Chen Qing-Yu Ding Yang Lv Wen Guo Fa-Chao Zhi Si-De Liu tian-Ming cheng Guangdong Provincial Key Laboratory of Gastroenterology Department of Gastroenterology Nanfang Hospital Southern Medical University Department of Gastroenterology Shenzhen Hospital of Southern Medical University Hui Qiao Medical Center Nanfang Hospital Southern Medical University

AIM To evaluate the cytological diagnostic capacity and sample quality of the slow-pull technique and compare them with different suction *** From July 2010 to December 2015, 102 patients with pancreatic solid lesions who underwent endoscopic ultrasound-guided fine-needle aspiration(EUS-FNA) with 22-gauge needles were retrospectively evaluated. EUS-FNA diagnosis was based on a cytological examination, and final diagnosis was based on a comprehensive standard of cytological diagnosis, surgical pathology and clinical or imaging follow-up. Cytological specimens were characterized for cellularity and blood contamination. The cytological diagnostic capacity and sample quality of the slow-pull technique and suction techniques with 5-m L/10-m L/20-m L syringes were *** Of all of the EUS-FNA procedures, the slow-pull technique and suction techniques with 5-m L/10-m L/20-m L syringes were used in 31, 19, 34 and 18 procedures, respectively. There were significant differences between these four suction techniques in terms of cytological diagnostic accuracy(90.3% vs 63.2% vs 58.8% vs 55.6%, P = 0.019), sensitivity(88.2% vs 41.7% vs 40.0% vs 36.4%, P = 0.009) and blood contamination(score ≥ 2 for 29.0% vs 52.6% vs 70.6% vs 72.2%, P = 0.003). The accuracy and sensitivity of the slow-pull technique were significantly higher than those of the suction techniques using 5-m L(P = 0.03, P = 0.014), 10-m L(P = 0.005; P = 0.006) and 20-mL syringes(P = 0.01, P = 0.01). Blood contamination was significantly lower in the slow-pull technique than in the suction techniques with 10-m L(P = 0.001) and 20-mL syringes(P = 0.007).CONCLUSION The slow-pull technique may increase the cytological diagnostic accuracy and sensitivity with slight blood contamination during EUS-FNA when using 22-gauge needles for solid pancreatic masses.

关键词： Endoscopic ultrasound-guided fine-needle aspiration Pancreatic solid lesion Slow-pull technique Suction Negative pressure Cytology

Diagnostic classification of endosonography for differentiating colorectal ulcerative diseases: A new statistical method

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World Journal of Gastroenterology 2017年第46期23卷 8207-8216页

作者： En-Qi Qiu Wen Guo tian-Ming cheng Yong-Li Yao Wei Zhu Si-De Liu Fa-Chao Zhi Department of Gastroenterology Nanfang HospitalSouthern Medical UniversityInstitute of Digestive Diseases of Guangdong ProvinceGuangdong Provincial Key Laboratory of Gastroenterology

AIM To establish a classification method for differential diagnosis of colorectal ulcerative diseases, especially Crohn's disease(CD), primary intestinal lymphoma(PIL) and intestinal tuberculosis(ITB).METHODS We searched the in-patient medical record database for confirmed cases of CD, PIL and ITB from 2008 to 2015 at our center, collected data on endoscopic ultrasound(EUS) from randomly-chosen patients who formed the training set, conducted univariate logistic regression analysis to summarize EUS features of CD, PIL and ITB, and created a diagnostic classification method. All cases found to have colorectal ulcers using EUS were obtained from the endoscopy database and formed the test set. We then removed the cases which were easily diagnosed, and the remaining cases formed the perplexing test set. We re-diagnosed the cases in the three sets using the classification method, determined EUS diagnostic accuracies, and adjusted the classification accordingly. Finally, the re-diagnosing and accuracy-calculating steps were *** In total, 272 CD, 60 PIL and 39 ITB cases were diagnosed from 2008 to 2015 based on the in-patient database, and 200 CD, 30 PIL and 20 ITB cases were randomly chosen to form the training set. The EUS features were summarized as follows: CD: Thickened submucosa with a slightly high echo level and visible layer; PIL: Absent layer and diffuse hypoechoic mass; and ITB: Thickened mucosa with a high or slightly high echo level and visible layer. The test set consisted of 77 CD, 30 PIL, 23 ITB and 140 cases of other diseases obtained from the endoscopy database. Seventy-four cases were excluded to form the perplexing test set. After adjustment of the classification, EUS diagnostic accuracies for CD, PIL and ITB were 83.6%(209/250), 97.2%(243/250) and 85.6%(214/250) in the training set, were 89.3%(241/270), 97.8%(264/270) and 84.1%(227/270) in the test set, and were 86.7%(170/196), 98.0%(192/196) and 85.2%(167/196) in the perplexing set, respec

关键词： Endoscopic ultrasound Ulcerative diseases Crohn’s disease Primary intestinal lymphoma Intestinal tuberculosis Classification

Approximate Gaussian conjugacy： parametric recursive filtering under nonlinearity, multimodality, uncertainty, and constraint, and beyond

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Frontiers of Information Technology & Electronic Engineering 2017年第12期18卷 1913-1939页

作者： tian-cheng LIn Jin-ya SU Wci LIU Juan M. CORCHADO School of Sciences University of Salamanca Salamanca 37007 Spain Department of Aeronautical and Automotive Engineering Loughborough University Loughborough LE11 3TU UK De~artment of Electronic and Electrical En.oineering University of She3ff~eld She3ff~eld $1 ~ET UK

Since the landmark work of R. E. Kalman in the 1960s, considerable efforts have been devoted to time series state space models for a large variety of dynamic estimation problems. In particular, parametric filters that seek analytical estimates based on a closed-form Markov-Bayes recursion, e.g., recursion from a Gaussian or Gaussian mixture （GM） prior to a Gaussian/GM posterior （termed ＇Gaussian conjugacy＇ in this paper）, form the backbone for a general time series filter design. Due to challenges arising from nonlinearity, multimodality （including target maneuver）, intractable uncertainties （such as unknown inputs and/or non-Gaussian noises） and constraints （including circular quantities）, etc., new theories, algorithms, and technologies have been developed continuously to maintain such a conjugacy, or to approximate it as close as possible. They had contributed in large part to the prospective developments of time series parametric filters in the last six decades. In this paper, we review the state of the art in distinctive categories and highlight some insights that may otherwise be easily overlooked. In particular, specific attention is paid to nonlinear systems with an informative observation, multimodal systems including Gaussian mixture posterior and maneuvers, and intractable unknown inputs and constraints, to fill some gaps in existing reviews and surveys. In addition, we provide some new thoughts on alternatives to the first-order Markov transition model and on filter evaluation with regard to computing complexity.

关键词： Kalman filter Gaussian filter Time series estimation Bayesian filtering Nonlinear filtering Constrained filtering Gaussian mixture Maneuver Unknown inputs

Polarization Conversion of Single Photon via Scattering by a Λ System in a Semi-Infinite Waveguide

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Chinese Physics Letters 2019年第5期36卷 27-30页

作者： Fu-Qiang Yu Mu-tian cheng Shao-Ming Li Xiao-San Ma Zhi-Feng Zhu Xian-Shan Huang Anhui Provincial Key Lab of Power Electronics and Motion Control Anhui University of TechnologyMaanshan 243002 School of Electrical Engineering and Information Anhui University of TechnologyMaanshan 243002 School of Mathematics and Physics Anhui University of TechnologyMaanshan 243002

We theoretically investigate single-photon polarization conversion via scattering by an atom with Λ configuration coupled to a semi-infinite waveguide and discuss the two cases in which the Λ system is non-degenerated and degenerated. By applying the hard-wall boundary condition of the semi-infinite waveguide, it is found that singlephoton polarization conversion can be realized with unit probability for both cases under the ideal *** with the polarization conversion, the frequency conversion of a single photon can also be realized with unit probability in the ideal case if the Λ system is not degenerated.

关键词： Polarization Conversion Single Photon via Scattering

PID1,a new tumor-promoting gene in insulin resistance mediated acceleration of hepatocellular carcinoma development and progression

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中国药理学与毒理学杂志 2017年第10期31卷 977-978页

作者： Ming XIANG Qian-qian XU Na XU Zhong-shi ZHOU Ya-li TUO cheng tian Department of Pharmacology School of PharmacyTongji Medical CollegeHuazhong University of Science and Technology

OBJECTIVE To investigate the effect of phosphotyrosine interaction domain containing 1(PID1,NYGGF4)on promotion of IR and HCC,and explore its underlying *** Lentivirus were used to mediate the knockdown of PID1 in HFD induced IR mouse model as well as ob/ob *** glucose and insulin tolerance were performed 4 weeks after lentivirus ***-based transfection was applied to inducethe liver specific overexpression of *** cytometry was exerted to detect the proportion and function of immune *** T-PCR and Western blot were used to detect the expression of downstream pathways of *** was used to determine the receptor of *** immunoprecipitation(ChI P)was operated to measure the modification of H3K4me3 of PID1 *** PID1 restriction improved insulin resistance,hyperglycemia and fatty ***,hepatic knockdown of PID1 attenuated liver xenografted tumor ***,PID1 liver-specific protooncogenes via hydrodynamics-based transfection established a primary hepatocellular carcinoma mouse model,induced an immunosuppressive environment,with the reduction of CD3^+,CD4^+,CD8^+T cel s,retarded maturation of dendritic cel s(DCs),pronounced differentiation of regulatory T cells(Tregs),and recruitment of *** addition,PID1 overexpression activated proliferation related genes,promoted anti-inflammatory genes,suppressed pro-inflammatory genes,induced glycolysis and lipid metabolism genes to facilitate tumorigenesis in ***,PID1 exerted its tumor-promoting function through binding to epidermal growth factor receptor(EGFR)and activation of downstream MAPK *** such,PID1 exist trimethylation of histone H3 at lysine 4(H3K4me3)modification and IR up-regulated the expression of PID1 by activation the H3K4me3 *** PID1 is a new gene that exerts both liver cancer-promoting and insulin resistance inducing *** accelerates liver cancer

关键词： PID1 insulin resistance hepatocellular carcinoma cancer promoting immunosuppression

Distribution of solanesol in Nicotiana tabacum

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Journal of Forestry Research 2007年第1期18卷 69-72页

作者： ZHAO Chun-jian ZU Yuan-gang LI Chun-ying tian cheng-yu Key Laboratory of Forest Plant Ecology Ministry of Education Northeast Forestry University Harbin 150040 P R. China Heilongjiang tobacco monopoly administration Harbin 150040 P. R. China

Solanesol is an important secondary metabolite in Nicotiana tabacum. Distribution of solanesol in Nicotiana tabacum was investigated by High Performance Liquid Chromatography （HPLC） method. The quantitative distribution of solanesol in various organs and tissues of N. tabacum showed that solanesol content, obviously different in all organs, was 6.8, 18.3, 27.5, 45.8, and 68.0 times higher in leaves than that in the stalks, flowers, seeds, fruits and roots, respectively. The contents of solanesol in various parts of leaf, stalk and flower were determined. The content of solanesol in top leaf, middle leaf and bottom leaf gradually decreased （6.124, 5.813 and 5.687 mg.g^-1, respectively） and the content of solanesol in various leaf-parts （leaf apex, leaf middle and leaf base） also gradually decreased. The content of solanesol in top stalk was 1.19 times and 1.92 times higher than that in the middle stalk and the bottom stalk, respectively. The content of solanesol in various tissues of stalk （epidermis, cortex and stele） dramatically decreased. The sepal contained higher concentration of solanesol （1.192 mg·g^-1） compared to any other parts in flower. The study will provide the base data for the regulation and control of solanesol, moreover, it will provide the scientific evidences for the rational development and utilization of N. tabacum resources.

关键词： Solanesol Nicotiana tabacum Distribution High Performance Liquid Chromatography