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Discussion of Garfinkle-Horowitz-Strominger Dilaton Black Hole Entropy

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Communications in Theoretical Physics 2009年第7期52卷 189-192页

作者： WANG chun-Yan GUI yuan-Xing School of Physics and Optoelectronic Technology Dalian University of Technology Dalian 116024 China

We discuss the entropy of the Garfinkle-Horowitz-Strominger dilaton black hole by using the thin film brick-wall model, and the entropy obtained is proportional to the horizon area of the black hole confirming the Bekenstein-Hawking＇s area-entropy formula. Then, by comparing with the original brick-wall method, we find that the result obtained by the thin film method is more reasonable avoiding some drawbacks, such as little mass approximation, neglecting logarithm term, and taking the term L^3 as a contribution of the vacuum surrounding the black hole, and the physical meaning of the entropy is more clearer.

关键词： Garfinkle-Horowitz-Strominger dilaton black hole thin film brick-wall model entropy

Application of Bipartite and Tripartite Entangled State Representations in Quantum Teleportation of Continuous Variables

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Communications in Theoretical Physics 2005年第2X期44卷 269-273页

作者： yuan Hong-chun QI Kai-Guo Department of Physics University of Science and Technology of China Hefei 230026 China Department of Physics Huaibei Coal Industry Teachers' College Huaibei 235000 China

We mostly investigate two schemes. One is to teleport a multi-mode W-type entangled coherent state using a peculiar bipartite entangled state as the quantum channel different from other proposals. Based on our formalism,teleporting multi-mode coherent state or squeezed state is also possible. Another is that the tripartite entangled state is used as the quantum channel of controlled teleportation of an arbitrary and unknown continuous variable in the case of three participators.

关键词： entangled state representation continuous variable quantum teleportation

Multi-mode Einstein-Podolsky-Rosen Entangled State Representation and Its Applications

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Communications in Theoretical Physics 2008年第9期50卷 615-618页

作者： LI Heng-Mei yuan Hong-chun Institute for Theoretical Physics and Department of Modern Physics University of Science and Technology of China Hefei 230026 China Department of Physics Huaibei Coal Industry Teachers＇ College Huaibei 235000 China

Our primary purpose of this work is to explicitly construct the general multiparite Einstein-Podolsky- Rosen （EPR） entangled state in multi-mode Fock space for a system with different masses of particles, which makes up a new quantum mechanical representation owing to completeness relation and orthogonal property. Its entanglement can be seen more clearly by analyzing its standard Schmidt decomposition. In addition, some applications of the multipartite entanglement are proposed including deriving the generalized Wigner operator and squeezing operator.

关键词： Einstein-Podolsky-Rosen (EPR) entangled state representation

Diffractive Scattering Factorization from J/ψ and γ Associated Production in HERA ep Collisions

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Communications in Theoretical Physics 2002年第11期37卷 583-586页

作者： YAN Zhan-yuan DUAN chun-Gui Department of Physics North China Electric Power University Baoding 071003 China Department of Physics Hebei Teachers'' University Shijiazhuang 050016 China CCAST (World Laboratory) P.O. Box 8730 Beijing 100080 China

Using three sets of Pomeron structure functions, the cross sections of J/ψ and γ associated productionvia resolved photon and proton diffractive scatting in ep collision are investigated. It is found that the cross sectionscalculated with various gluon distribution functions of Pomeron are different. The discrepancy is about 1.8 times fordifferential cross sections and 1.7 times for total cross sections. The experimental studies of the process could give valuableinsight in the diffractive production mechanism and test the color-octet mechanism for heavy quarkonium production ina new environment.

关键词：高能物理强子-强子碰撞 J/ψ介子

Velocity Calculation by Automatic Camera Calibration Based on Homogenous Fog Weather Condition

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International Journal of Automation and computing 2013年第2期10卷 143-156页

作者： Hong-Jun song Yang-Zhou Chen yuan-yuan Gao Center for Autonomous Technology and Intelligent Control Beijing University of Technology College of Information and Engineering Zhejiang Agriculture and Forestry University

A novel algorithm for vehicle average velocity detection through automatic and dynamic camera calibration based on dark channel in homogenous fog weather condition is presented in this paper. Camera fixed in the middle of the road should be calibrated in homogenous fog weather condition, and can be used in any weather condition. Unlike other researches in velocity calculation area, our traffic model only includes road plane and vehicles in motion. Painted lines in scene image are neglected because sometimes there are no traffic lanes, especially in un-structured traffic scene. Once calibrated, scene distance will be got and can be used to calculate vehicles average velocity. Three major steps are included in our algorithm. Firstly, current video frame is recognized to discriminate current weather condition based on area search method （ASM）. If it is homogenous fog, average pixel value from top to bottom in the selected area will change in the form of edge spread function （ESF）. Secondly, traffic road surface plane will be found by generating activity map created by calculating the expected value of the absolute intensity difference between two adjacent frames. Finally, scene transmission image is got by dark channel prior theory, camera s intrinsic and extrinsic parameters are calculated based on the parameter calibration formula deduced from monocular model and scene transmission image. In this step, several key points with particular transmission value for generating necessary calculation equations on road surface are selected to calibrate the camera. Vehicles pixel coordinates are transformed to camera coordinates. Distance between vehicles and the camera will be calculated, and then average velocity for each vehicle is got. At the end of this paper, calibration results and vehicles velocity data for nine vehicles in different weather conditions are given. Comparison with other algorithms verifies the effectiveness of our algorithm.

关键词： Vehicle velocity calculation homogenous fog weather condition dark channel prior monocular camera calibration

Congenital biliary atresia caused by GPC1 gene mutation in Chinese siblings:A case report

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World Journal of Clinical Cases 2023年第3期11卷 629-634页

作者： yuan-Mei Kong Ke yuan chun-Lin Wang Department of Pediatrics The First Affiliated Hospital of Zhejiang UniversityHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Congenital biliary atresia(CBA)is a serious hepatobiliary disease in children with unknown *** outcome is often liver transplantation or *** the etiology of CBA is of great significance for prognosis,treatment,and genetic *** SUMMARY A male Chinese infant at an age of 6 mo and 24 d was hospitalized because of"yellow skin for more than 6 mo".Soon after birth,the patient developed jaundice,which then progressively intensified.A"laparoscopic exploration"indicated"biliary atresia".After coming to our hospital,genetic testing suggested a GPC1mutation[loss 1(exons 6-7)].The patient recovered and was discharged after living donor liver *** discharge,the patient was followed *** condition was controlled by oral drugs,and the patient’s condition was *** CBA is a complex disease with a complex *** the etiology is of great clinical importance for treatment and *** case reports CBA caused by a GPC1 mutation,which enriches the genetic etiology of biliary ***,its specific mechanism needs to be confirmed by further research.

关键词： Congenital biliary atresia Jaundice Etiology GPC1 Liver transplantation Case report

Characteristics of the water-soluble components of aerosol particles in Hefei,China

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Journal of Environmental Sciences 2016年第4期28卷 32-40页

作者： Xue-liang Deng chun-e Shi Bi-wen Wu yuan-jian Yang Qi Jin Hong-lei Wang song Zhu Caixia Yu Anhui Institute of Meteorology Key Laboratory of Atmospheric Science and Satellite Remote Sensing Hefei 230031 China Anhui Weather Modification Hefei 230031 China Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology Nanjing 210044 China Hefei Meteorological Bureau Hefei 230041 China

Size-classified daily aerosol mass concentrations and concentrations of water-soluble inorganic ions were measured in Hefei,China,in four representative months between September 2012 and August *** annual average mass concentration of 169.09μg/m^3 for total suspended particulate（TSP）was measured using an Andersen Mark-II cascade *** seasonal average mass concentration was highest in winter（234.73μg/m^3）and lowest in summer（91.71μg/m^3）.Water-soluble ions accounted for 59.49%,32.90%,48.62%and 37.08%of the aerosol mass concentration in winter,spring,summer,and fall,respectively,which indicated that ionic species were the primary constituents of the atmospheric *** four most abundant ions were NO3^-,SO4^2-,Ca^2＋ and NH4^＋.With the exception of Ca^2＋,the mass concentrations of water-soluble ions were in an intermediate range compared with the levels for other Chinese ***,nitrate,and ammonium were the dominant fine-particle species,which were bimodally distributed in spring,summer and fall;however,the size distribution became unimodal in winter,with a peak at 1.1–2.1μ*** Ca^2＋ peak occurred at approximately 4.7–5.8μm in all *** cation to anion ratio was close to 1.4,which suggested that the aerosol particles were alkalescent in *** average NO3^-/SO4^2-mass ratio was 1.10 in Hefei,which indicated that mobile source emissions were *** positive correlation coefficients between the concentrations of NH4^＋ and SO4^2-,NH4^＋ and NO3^-,SO4^2-and NO3^-,and Mg^2＋ and Ca^2＋ were also indicated,suggesting that aerosol particles may be present as（NH4）2SO4,NH4HSO4,and NH4NO3.

关键词： Aerosol Water-soluble ions Hefei Size distribution

Oral Microbiology:Past,Present and Future

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International Journal of Oral Science 2009年第2期1卷 47-58页

作者： Xue-song He Wen-yuan Shi School of Dentistry the University of California Los Angeles USA

Since the initial observations of oral bacteria within dental plaque by van Leeuwenhoek using his primitive microscopes in 1680, an event that is generally recognized as the advent of oral microbiological investigation, oral microbiology has gone through phases of ＂reductionism＂ and ＂holism＂. From the small beginnings of the Miller and Black period, in which microbiologists followed Koch＇s postulates, took the reductionist approach to try to study the complex oral microbial community by analyzing individual species; to the modem era when oral researchers embrace ＂holism＂ or ＂system thinking＂, adopt new concepts such as interspecies interaction, microbial community, biofilms, poly-microbial diseases, oral microbiological knowledge has burgeoned and our ability to identify the resident organisms in dental plaque and decipher the interactions between key components has rapidly increased, such knowledge has greatly changed our view of the oral microbial flora, provided invaluable insight into the etiology of dental and periodontal diseases, opened the door to new approaches and techniques for developing new therapeutic and preventive tools for combating oral polymicrobial diseases.

关键词： oral microbiology biofilms dental caries oral pathogenesis

Hysteresis of a periodic or leaking western boundary current flowing by a gap

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Acta Oceanologica Sinica 2019年第4期38卷 90-96页

作者： Xinxin song Dongliang yuan Zheng Wang Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of Sciences College of Meteorology and Oceanography National University of Defense Technology Key Laboratory of Marine Science and Numerical Modeling First Institute of OceanographyMinistry of Natural Resources University of Chinese Academy of Sciences Function Laboratory for Ocean Dynamics and Climate Pilot National Laboratory for Marine Science and Technology (Qingdao)

A 1.5-layer quasi-geostrophic reduced gravity model is used to study the hysteresis of a periodic or leaking western boundary current(WBC) flowing by a gap. When the periods of the WBC variations are much longer than the Rossby adjustment time scales of the circulation in the vicinity of the gap, the Hopf bifurcations during the Reincrease and Re-decrease loops are delayed to produce a new domain of hysteresis of the Reynolds numbers, and the critical Reynolds numbers of the WBC regime transitions change significantly, with the domain of the hysteresis Reynolds number larger for shorter periodic forcing. When the periods of the WBC variations are comparable to those of the Rossby adjustment time scales of the circulation in the vicinity of the gap, the WBC path inside the gap becomes periodic without hysteresis. The intrusion of the WBC into the western basin generally gets smaller as the period decreases. In addition, the partial leakage of the WBC transport through the gap into the western basin is found to have significant impact on the hysteresis loop of the WBC path when the leaked transport is larger than 1/2 of the WBC. Both the intrusion extent and the critical Reynolds numbers of the WBC regime transition are changed, and the larger the throughflow transport, the larger the change.

关键词： hysteresis periodic western boundary current throughflow