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Analytical expression for betatron tune shift due to field errors in lump quadrupole

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Nuclear Science and Techniques 2016年第1期27卷 5-7页

作者： yuan Chen Cheng-Hui Yu Qing Qin Jiu-Qingwang shou-Xian Fang Institute of High Energy Physics Chinese Academy of Sciences

The integrated gradient of a quadrupole will be deviated by a close neighboring sextupole, and this is called the effect of fringe field interference. Using the Lie algebra techniques, an analytical expression for the betatron tune shift due to this effect has been derived. The process does not depend on the supposition of the thin-lens quadrupoles. It can be used to estimate the tune shift differences between the designed lattice and the one including the fringe field interference. More generally, the method can be applied to other kinds of fringe field interference.

关键词：解析表达式四极杆场误差电场干扰李代数方法 Tron 薄透镜密相

A decomposition method of vortex identification and its application in side channel pumps

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Journal of Hydrodynamics 2022年第6期34卷 1106-1120页

作者： Ke Chen Fan Zhang Yu-jian Fang Desmond Appiah shou-qi yuan Feng Hong National Research Center of Pumps Jiangsu UniversityZhenjiang212013China Quality Inspection Center for Pump Products in Zhejiang Province Wenling317599China College of Mechanical and Power Engineering China Three Gorges UniversityYi Chang443000China

This research utilizes theΩvortex identification method to address the turbulent flows in a single-stage side channel pump,to comprehensively characterize the three types of dynamic vortex structures classified based on *** on the Galilean invariance,the work employs coordinate rotation and ***,the indistinguishable 3-D vortex can be simplified to 2-D vortex on typical research *** juxtaposing the overall performance,it was revealed that a diversity of areas with high values yielded enhanced reflection of the vortex intensity,as measured by velocity *** axial vortex structure with high intensity exists at the outer radius under all conditions *** the longitudinal vortex usually shows high intensity between the middle and outer ***,the radial vortex is more likely to be at the inner radius near the suction ***,this paper introduces a specific valueξ,which represents the ratio of decomposition to the total of the manifestation of the fluid rotational *** the fluctuation and mean value,it can be realized that the development of the specific vortex in three directions at different *** example,the specific valueξ2 refers to the typical longitudinal vortex as dynamic vortex are almost from 20%to 50%,which illustrates that the longitudinal vortex only occupies a minor percentage in the total *** phenomenon is one of the main reasons for the low *** present work could provide some suggestions and references for in-depth studies in fluid engineering with intense swirling flows.

关键词： Side channel pumps unsteady flow Ω-criterion vortex evolution

Optical Absorption of Sol-Gel Derived ZnO/TiO_(2) Nanocomposite Films

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Chinese Physics Letters 2001年第11期18卷 1520-1522页

作者： yuan Zhi-Hao TANG Cheng-Chun FAN shou-Shan Department of Chemistry Tsinghua UniversityBeijing 100084 Department of Physics Tsinghua UniversityBeijing 100084

ZnO/TiO_(2) nanocomposite films on quartz substrates were prepared by the sol-gel method, and the corresponding optical absorption properties were investigated. In the ultraviolet region, it was found that the position of fundamental absorption edge partially depends on the composition of the ZnO/TiO_(2 ) films, and shifts toward a shorter wavelength with the increasing content of ZnO in the films. Moreover, a blueshift of the absorption edge resulted from a quantum size effect and the quantum confinement effect was observed in the ZnO/TiO_(2) system.

关键词： composite absorption effect

Differences of core genes in liver fibrosis and hepatocellular carcinoma:Evidence from integrated bioinformatics and immunohistochemical analysis

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World Journal of Gastrointestinal Oncology 2022年第7期14卷 1265-1280页

作者： Yue Li shou-Li yuan Jing-Ya Yin Kun Yang Xin-Gang Zhou Wen Xie Qi wang Department of Pathology Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Beijing Key Laboratory of Emerging Infectious Diseases Beijing 100015China Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyBeijing 100101China Center of Liver Diseases Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China

BACKGROUND Liver fibrosis and hepatocellular carcinoma(HCC)are common adverse consequences of chronic liver *** interaction of various risk factors may cause them to *** of specific biomarkers is of great significance for understanding the occurrence,development mechanisms,and determining the novel tools for diagnosis and treatment of both liver fibrosis and *** To identify liver fibrosis-related core genes,we analyzed the differential expression pattern of core genes in liver fibrosis and *** Gene expression profiles of three datasets,GSE14323,GSE36411,and GSE89377,obtained from the Gene Expression Omnibus(GEO)database,were analyzed,and differentially expressed genes(DEGs)between patients with liver cirrhosis and healthy controls were identified by screening via R software packages and online tool for Venn *** WebGestalt online tool was used to identify DEGs enriched in biological processes,molecular functions,cellular components,and Kyoto Encyclopedia of Genes and Genomes *** protein–protein interactions of DEGs were visualized using Cytoscape with ***,the expression pattern of core genes was analyzed using Western blot and immunohistochemistry in a carbon tetrachloride(CCl_(4))-induced liver cirrhosis mouse model and in patient liver ***,Kaplan-Meier curves were constructed using the Kaplan-Meier plotter online *** Forty-five DEGs(43 upregulated and 2 downregulated genes)associated with liver cirrhosis were identified from three GEO *** hub genes were identified,which were upregulated in liver *** blot and immunohistochemical analyses of the three core genes,decorin(DCN),dermatopontin(DPT),and SRY-box transcription factor 9(SOX9),revealed that they were highly expressed in the CCl4-induced liver cirrhosis mouse *** expression levels of DCN and SOX 9 were positively correlated with the degree of fibrosis,and SOX 9 level in HCC patients was significant

关键词： Liver cirrhosis Hepatocellular carcinoma Bioinformatical analysis Decorin Dermatopontin SRY-box transcription factor 9

Establishment of an Iron Deficiency Model by Iron Depletion in Pregnant Rats

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Biomedical and Environmental Sciences 2024年第2期37卷 210-215页

作者： CHEN Xi HAN Chao ZHAO Jin Peng SHEN Shi wang Li yuan REN shou wang Tong Lei MA Yan XU Ze Chao HUO Jun Sheng Key Laboratory of Trace Element Nutrition National Health Commission of the People’s Republic of ChinaNational Institute for Nutrition and HealthChinese Center for Disease Control and PreventionBeijing 100050China

Anemia,a global public health problem,has significant adverse consequences on the cognitive development of children and the work capacity of adults;affecting social and economic ***,roughly 43%of children under five years of age,38%of pregnant women,and 29%of nonpregnant women had *** during pregnancy significantly increases the risk of low birth weight and preterm birth.A 10 g/L increase in hemoglobin has been estimated to decrease the risk of maternal and perinatal mortality by 29%and 28%.

关键词： mortality pregnancy anemia

The influence of the flow rate on periodic flow unsteadiness behaviors in a sewage centrifugal pump

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Journal of Hydrodynamics 2013年第5期25卷 702-709页

作者：裴吉袁寿其袁建平王文杰 Research Center of Fluid Machinery Engineering and Technology Jiangsu University

To design a single-blade pump with a good performance in a wide operational range and to increase the pump reliability in the multi-conditional hydraulic design process, an understanding of the unsteady flow behaviors as related with the flow rate is very important. However, the traditional design often considers only a single design condition, and the unsteady flow behaviors have not been well studied for single-blade pumps under different conditions. A comparison analysis of the flow unsteadiness behaviors at di- fferent flow rates within the whole flow passage of the pump is carried out in this paper by solving the three-dimensional unsteady Reynolds-averaged Navier-Stokes equations with the Shear Stress Transport （SST） turbulence model. A definition of the unsteadiness in the pump is made and applied to analyze the unsteady intensity distributions, and the flow rate effect on the complex unsteady flow in the pump is studied quantitatively while the flow mechanism is also analyzed. The CFD results are validated by experimental data collected at the laboratory. It is shown that a significant flow rate effect on the time-averaged unsteadiness and the turbulence intensity distribution can be observed in both rotor and stator domains including the side chamber. The findings would be useful to reduce the flow unsteadiness and to increase the pump reliability under multi-conditions.

关键词： flow rate effect flow unsteadiness turbulence intensity sewage centrifugal pump multi-conditions

Three-Party Quantum State Sharing of an Arbitrary Unknown Two-Qubit State Based on Entanglement Swapping and Bell-State Measurements

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Communications in Theoretical Physics 2009年第7期52卷 50-54页

作者： yuan Hao SONG Jun HOU Kui HU Xiao-yuan HAN Lian-Fang SHI shou-Hua Department of Mathematics ＆ Physics West Anhui University Lu＇an 237012 China School of Physics ＆ Material Science Anhui University Hefei 230039 China Teaching ＆ Research Section of Physics School of Basic Medical Science Anhui Medical University Hefei 230032 China

We propose a scheme for sharing an arbitrary unknown two-qubit state among three parties by using afour-qubit cluster-class state and a Bell state as a quantum channel With a quantum controlled phase gate (QCPG)operation and a local unitary operation,any one of the two agents has the access to reconstruct the original state ifhe/she collaborates with the other one,whilst individual agent obtains no *** all quantum resource canbe used to carry the useful information,the intrinsic efficiency of qubits approaches the maximal ***,thepresent scheme is more feasible with present-day technique.

关键词： quantum state sharing entanglement swapping Bell-state measurements QCPG operation local unitary operation

Deterministic Secure Quantum Communication with Cluster State and Bell-Basis Measurements

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Communications in Theoretical Physics 2008年第11期50卷 1105-1108页

作者： yuan Hao HE Qin HU Xiao-yuan HOU Kui HAN Lian-Fang SHI shou-Hua Department of Mathematics and Physics West Anhui University Lu＇an 237012 China School of Physics and Material Science Anhui University Hefei 230039 China Teaching and Research Section of Physics School of Basic Medical Science Anhui Medical University Hefei 230032 China

We present a novel protocol for deterministic secure quantum communication by using the lour-qubit cluster state as quantum channel. It is shown that two legitimate users can directly transmit the secret messages based on Bellbasis measurements and classical communication. The present protocol makes use of the ideas of block transmission and decoy particle checking technique. It has a high capacity as each cluster state can carry two 5its of information, and has a high intrinsic efficieney 5ecause almost all the instances except the decoy checking particles （its numSer is negligible） are useful. Furthermore, this protocol is feasible with present-day technique.

关键词： deterministic secret quantum communication cluster state Bell-basis measurement block transmission decoy photon checking technology

Radiation-induced reduction of chromium(VI) in aqueous solution by γ-irradiation in a laboratory-scale

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Journal of Environmental Sciences 2006年第2期18卷 254-258页

作者： yuan shou-jun ZHENG Zheng MU Yan-yan YU Xin ZHAO Yong-fu State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing 210093 China Institute of Atomic Energy Jiangsu Academy of Agricullure Sciences Nanjing 210014 China

Radiation-induced reduction of chromium（Ⅵ）（Cr（Ⅵ） by ,γ-irradiation was studied with an initial concentration of 42 mg/L in aqueous solutions. Several factors which might affect the reduction of Cr（Ⅵ） to Cr（Ⅲ） were examined, pH of aqueous solution affects the reduction efficiency significantly. Acidic condition of aqueous solution accelerates the process. At pH 2, a reduction of 86.2% was achieved with the absorbed dose of 15 kGy, while, with the same dose, at pH 5 and 7, the reduction ofCr （Ⅵ） were only 36.3% and 22.2%, respectively. Ethanol （0.1% in V：V） and sodium carbonate （1 mmol/L） were added into the solution respectively as relatively non-toxic hydroxyl radical scavengers. Reduction rate increased greatly in the presence of ethanol at each pH. Reduction efficiency of Cr（Ⅵ） was enhanced in neutral condition with the addition of sodium carbonate, however, no enhancement was found in acidic condition. The reduction of Cr（Ⅵ） was restrained when the solution was saturated with oxygen; however, the restraint was not significant.

关键词： γ-irradiation radiation-induced reduction of Cr(Ⅵ) hydroxyl radical scavengers kinetics