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Epidemiological Analysis on Reported Hepatitis C Cases in China from 2012 to 2016

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Biomedical and Environmental Sciences 2018年第10期31卷 773-776页

作者： HEI fa Xin YE Shao Dong ding Guo Wei PANG Lin WANG Xiao Chun LIU Zhong fu National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention

Viral hepatitis is an important challenge to public health *** hepatitis B is well controlled due to vaccination,the disease burden caused by the spread of hepatitis C has become increasingly *** C is an infectious disease that is mainly *** rate of chronicity ranges from 55% to 85% after people are infected with the hepatitis C virus （HCV）.

关键词： HCV Figure Epidemiological Analysis on Reported Hepatitis C Cases in China from 2012 to 2016

GENERALIZED H-KKM TYPE THEOREMS IN H-METRIC SPACES WITH APPLICATIONS

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Applied Mathematics and Mechanics(English Edition) 2001年第10期22卷 1140-1148页

作者： ding Xie-ping(丁协平) XIA fu-quan(夏福全) Department of Mathematics Sichuan Normal University Chengdu 610066 P R China Department of Mathematics Sichuan Normal University Chengdu 610066 P R China

The new notions of H-metric spaces and generalized H-KKM mappings were introduced. Some generalized H-KKM type theorems for generalized H-K-KM mappings with finitely metrically compactly closed values and finitely metrically compactly open values were established in H-metric spaces. These theorems generalize recent results of Khamsi and Yuan. As applications, some Ky fan type matching theorems for finitely metrically compactly open covers and finitely metrically compactly closed covers, fixed point theorems and minimax inequality are obtained in H-metric spaces. These results generalize a number of known results in recent literature.

关键词： hyperconvex space H-metric space finitely metrically compactly closed (open) set generalized H-KKM mapping admissible set

Experimental Study of Entropy Production in Cells under Alternating Electric Field

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Chinese Physics Letters 2012年第8期29卷 284-287页

作者： ding Chang-Jiang LUO Liao-fu Laboratory of Theoretical Biophysics School of Physical Science and TechnologyInner Mongolia UniversityHohhot 010021 College of Science Inner Mongolia University of TechnologyHohhot 010051

We put forward a new method for measuring the entropy production in the living *** involves heating the sample by alternating the electric field and recording the outward heat *** entropy production in a normal cell MCF10A and a cancerous cell MDA-MB-231 were measured and *** results show that the method is effective for the entropy measurement of a living *** scaled electro-induced entropy production rate(SEEP)of MDA-MB-231 monotonically increases with the electric field strength at 5–40 V/*** that of MCF10A changes non-monotonically and there exists a peak at 5–30 V/*** electro-induced entropy production ratio(EEPR)is smaller than 1 in a large range of field strengths,from 5 to 25 V/cm,which reveals that under 5–25 V/cm electric field exposure,the direction of the entropy flow may be changed from normal tissue to cancerous *** present a facile and effective strategy for experimentally investigating the thermodynamic properties of the cell and give a deeper insight into the physical difference between normal and cancerous cells under electric field exposure.

关键词： entropy Entropy recording

Manipulating a micro-cantilever between its optomechanical bistable states in a lever-based fabry-Pérot cavity

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Science China(Physics,Mechanics & Astronomy) 2015年第5期58卷 41-45页

作者： fu Hao ding Jiangfang LI Yong CAO GengYu State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of Sciences University of Chinese Academy of Sciences Beijing Computational Science Research Center

In this paper, we demonstrate experimentally switching a cantilever between its optomechanical bistable states in a low finesse optical cavity. Our experiment shows that the deformation of cantilever can be manipulated by tuning the cavity resonance. When the laser power increases across the threshold value of 110 ?W, optomechanical bistability is induced by strong static photothermal backaction at room temperature. Numerical calculation revealed that the bistable effect originates from the multi-well potential created via the optomechanical interaction. Switching of the cantilever between the bistable states was achieved by tuning the cavity to the corresponding boundaries of the bistable region, where the barrier between the bistable states vanishes.

关键词： optomechanical bistability static deformation control optomechanical switch photothermal backaction micro-cantilever

The Relationship between Civil&Commercial Law and Economic Law in the Context of the Market Economy

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学术界 2020年第7期 218-226页

作者： ding Yanshen fu Qilin Civil Commercial and Economic Law School China University of Political Science and LawBeijing 100088

Both civil&commercial law and economic law are the main legal basis for supervising market behavior and regulating market *** are indispensable laws in the national economic development and *** analyzing the relationship between civil&commercial law and economic law in the context of market economy,this article explores the similarities and differences between,and through the perfection and application of the two,China’s social and economic stability and a lasting progress can be better realized under the mechanism of market economy.

关键词： market economy civil&commercial law(CCL) economic law economic regulation

Electric-controlled metasurface antenna array with ultra-wideband frequency reconfigurable reflection suppression

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Journal of Systems Engineering and Electronics 2023年第6期34卷 1473-1482页

作者： ZHENG Yuejun CHEN Qiang ding Liang YUAN fang fu Yunqi College of Electronic Science and Technology National University of Defense TechnologyChangsha 410073China

The electric-controlled metasurface antenna array(ECMSAA)with ultra-wideband frequency reconfigurable reflection suppression is proposed and ***,an electriccontrolled metasurface with ultra-wideband frequency reconfigurable in-phase reflection characteristics is *** element of the ECMSAA is constructed by loading the single electric-controlled metasurface unit on the conventional patch antenna *** radiation properties of the conventional patch antenna and the reflection performance of electric-controlled metasurface are maintained when the antenna and the metasurface are ***,the ECMSAA elements have excellent radiation properties and ultra-wideband frequency reconfigurable in-phase reflection characteristics *** take a further step,a 6×10 ECMSAA is realized based on the designed metasurface antenna *** and measured results prove that the reflection of the ECMSAA is dynamically suppressed in the P and L ***,high-gain and multi-polarization radiation properties of the ECMSAA are *** design method not only realizes the frequency reconfigurable reflection suppression of the antenna array in the ultra-wide frequency band but also provides a way to develop an intelligent low-scattering antenna.

关键词： electric-controlled metasurface antenna array(ECMSAA) radiation reflection frequency reconfigurable.

Heat Transfer Characteristics of Printed Circuit Heat Exchanger with Supercritical Carbon Dioxide and Molten Salt

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Journal of Thermal Science 2021年第3期30卷 880-891页

作者： LAO Jiewei fu Qianmei WANG Weilong ding Jing LU Jianfeng School of Material Science and Engineering/School of Intelligent Systems Sun Yat-Sen UniversityGuangzhou 510006China

Molten salt and supercritical carbon dioxide(S-CO_(2))are important high temperature heat transfer media,but molten salt/S-CO_(2) heat exchanger has been seldom *** present paper,heat transfer in printed circuit heat exchanger(PCHE)with molten salt and S-CO_(2) is simulated and *** S-CO_(2) can be drove along passage wall by strong buoyancy force with large density difference,its heat transfer is enhanced by natural *** inlet region,natural convection weakens along flow direction with decreasing Richardson number,and the thermal boundary layer becomes thicker,so local heat transfer coefficient of S-CO_(2) significantly *** outlet region,turbulent kinetic energy gradually increases,and then heat transfer coefficient increases for turbulent heat transfer *** with transcritical CO_(2) with lower inlet temperature,local heat transfer coefficient of S-CO_(2) near inlet is lower for smaller Richardson number,while it will be higher for larger turbulent kinetic energy near *** of PCHE is mainly determined by the pressure drop in molten salt passage and the heat transfer resistance in S-CO_(2) *** molten salt passage width increases,molten salt pressure drop significantly decreases,and overall heat transfer coefficient slightly changes,so the comprehensive performance of PCHE is *** a result,PCHE unit with three semicircular passages and one semi-elliptic passage has better performance.

关键词： heat exchanger molten salt supercritical carbon dioxide numerical simulation

Numerical simulation of laser ablation of molybdenum target for laser-induced breakdown spectroscopic application

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Plasma Science and Technology 2018年第8期20卷 58-64页

作者： Cailong fu Qi WANG Hongbin ding School of Physics Key Laboratory of Materials Modification by LaserIon and Electron Beams（Ministry of Education）Dalian University of TechnologyDalian 116024People＇s Republic of China

Laser-induced breakdown spectroscopy has been recognized as a significant tool for element diagnostics in plasma–wall interaction. In this work, a one-dimensional numerical model is developed to simulate the laser ablation processes of a molybdenum（Mo） target in vacuum conditions. The thermal process of the interaction between the ns-pulse laser with wavelength of 1064 nm and the Mo target is described by the heat conduction equation. The plasma plume generation and expansion are described by Euler equations, in which the conservation of mass density, momentum and energy are included. Saha equations are used to describe the local thermal equilibrium of electrons, Mo atoms,Mo~＋ and Mo^（2＋） Plasma shielding and emission are all considered in this model. The mainly numerical results are divided into three parts, as listed ***, the rule of the plasma shielding effect varying with laser intensity is demonstrated quantitatively and fitted with the Nelder function. Secondly, the key parameters of plasma plume,such as the number density of species, the propagation velocity and the temperature, are all calculated in this model. The results indicate that the propagation velocity of the plume center increased with time in a general trend, however, one valley value appeared at about 20 ns due to the pressure gradient near the target surface leading to negative plasma velocity. Thirdly, the persistent lines of a Mo atom in the wavelength range from 300 nm to 600 nm are selected and the spectrum is calculated. Moreover, the temporal evolutions of Mo＇s spectral lines at wavelength of 550.6494 nm,553.3031 nm and 557.0444 nm are given and the results are compared with experimental data in this work.

关键词： LIBS ablation process molybdenum target numerical simulation

Prevalence of HCV Antibody and its Associated factors: A Study from Sentinel Hospitals in China

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Biomedical and Environmental Sciences 2023年第4期36卷 334-342页

作者： XU Peng ding Guo Wei WANG Xiao Chun YE Shao Dong HEI fa Xin YU Jie Jun YUAN Qing LIU Zhong fu LI Jian National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China Shandong Provincial Qianfoshan Hospital The First Hospital Affiliated with Shandong First Medical UniversityJinan 250014ShandongChina Center for Global Public Health Chinese Center for Disease Control and PreventionBeijing 102206China

Objective The prevalence and related factors of serum anti-HCV in different regions and hospitals have not been studied extensively in China. We used routine screening data to determine the prevalence of HCV antibody in hospital patients, evaluate the epidemic trend of hepatitis C and formulate screening *** Patient information and HCV antibody testing results were collected from January 2017 to December 2019 in 77 HCV sentinel hospitals in China. Univariate and multivariate logistic regression was used to determine the characteristics and *** HCV antibody prevalence rates were distinct among patients in different departments, with a range of 0.33%–6.93%. Patients who were admitted to the liver disease-related departments(aOR =10.76;95% CI, 10.27–11.28), Internal Medicine(aOR = 2.87;95% CI, 2.75–3.00), and Department of Surgery(aOR = 1.95;95% CI, 1.87–2.04), were more likely to be tested for HCV antibody positive. HCV antibody prevalence was associated with patients aged 45 years and older(aOR = 2.74;95% CI,2.69–2.80), testing in infetious disease hospitals(aOR = 2.33;95% CI, 2.26–2.40) and secondary hospitals(aOR = 1.72;95% CI, 1.69–1.75). Patients in sentinel hospitals of the Northeast(aOR = 12.75;95% CI,12.40–13.11), the Central(aOR = 1.65;95% CI, 1.61–1.70), and the West(aOR = 1.78;95% CI, 1.73–1.83)China had higher HCV prevalence than those who were in the Eastern coastal area. Conclusion Those who were over 45 years old and saw doctors for liver diseases, and invasive diagnosis and treatment should be referred to HCV antibody testing.

关键词： Hepatitis C virus HCV antibody test Prevalence of HCV antibody Sentinel hospital