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Science China(Technological Sciences) 2016年第2期59卷 330-336页

作者： REN ZhiJun ZHANG Lin shi yue College of Aerospace and Civil Engineering Harbin Engineering University College of Power and Energy Engineering Harbin Engineering University

This work aimed to study the inactivate kinetics of Staphylococcus aureus （S. aureus） in artificial seawater by ultraviolet radi- ation, establish relationships between model parameters and growth phases, and explain the mechanization of UV disinfection by molecular biological detection. Investigations were carried out for the validation of Chick-Watson, Collins-Selleck, Horn and Biphasic models when S. aureus was in stationary phase （t=14 h）. The results showed that the Biphasic kinetic model＇s R2 turned out to be the highest one （R2=0.9892） and RMSE was less than 0.5 （RMSE =0.2699）. The Biphasic kinetic model was better fit for ultraviolet disinfection than the other three models under the circumstance of this experiment and chosen to fit the ultraviolet disinfection curves for microorganisms at three growth phases. The sensitivity of microorganisms under ultraviolet radiation was in the following order： in exponential phase 〉 in stationary phase 〉 in lag phase by comparing the indexes of the Biphasic model （kl and x）. Besides, agarose gel electrophoresis was used in order to directly assess the damage to DNA of mi- croorganisms that were exposed to the different dose of UV irradiation. The results revealed that DNA damage caused by UV radiation was an important reason for the microorganism inactivation and as the UV dose increased, there was greater damage caused in DNA.

关键词： UV disinfection kinetics growth phases Biphasic models DNA damage

Commuting Dual Toeplitz Operators on the Orthogonal Complement of the Dirichlet Space

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Acta Mathematica Sinica,English Series 2009年第2期25卷 245-252页

作者： Tao YU shi yue WU Department of Mathematics Zhejiang Normal University Jinhua 321004 P. R. China

In this paper we characterize commuting dual Toeplitz operators with harmonic symbols on the orthogonal complement of the Dirichlet space in the Sobolev space. We also obtain the sufficient and necessary conditions for the product of two dual Toeplitz operators with harmonic symbols to be a finite rank perturbation of a dual Toeplitz operator.

关键词： Sobolev space Dirichlet space dual Toeplitz operator

Algebraic Properties of Dual Toeplitz Operators on the Orthogonal Complement of the Dirichlet Space

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Acta Mathematica Sinica,English Series 2008年第11期24卷 1843-1852页

作者： Tao YU shi yue WU Department of Mathematics Zhejiang Normal University Jinhua 321004 P. R. China Department of Mathematics Jilin University Changchun 130024 P. R. China

In this paper we investigate some algebra properties of dual Toeplitz operators on the orthogonal complement of the Dirichlet space in the Sobolev space. We completely characterize commuting dual Toeplitz operators with harmonic symbols, and show that a dual Toeplitz operator commutes with a nonconstant analytic dual Toeplitz operator if and only if its symbol is analytic. We also obtain the sufficient and necessary conditions on the harmonic symbols for SφSφψ= Sφψ.

关键词： Sobolev space Dirichlet space dual Toeplitz operator

Genetic Algorithm-Based Redundancy Optimization Method for Smart Grid Communication Network

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China Communications 2015年第8期12卷 73-84页

作者： shi yue QIU Xuesong GUO Shaoyong State Key Laboratory of Networking and Switching Beijing University of Posts and Telecommunications

This paper proposes a redundancy optimization method for smart grid Advanced Metering Infrastructure(AMI) to realize economy and reliability *** is a crucial part of the smart grid to measure,collect,and analyze data about energy usage and power quality from customer *** the communication perspective,the AMI consists of smart meters,Home Area Network(HAN) gateways and data concentrators;in particular,the redundancy optimization problem focus on deciding which data concentrator needs *** order to solve the problem,we first develop a quantitative analysis model for the network economic loss caused by the data concentrator ***,we establish a complete redundancy optimization model,which comprehensively consider the factors of reliability and ***,an advanced redundancy deployment method based on genetic algorithm(GA) is developed to solve the proposed *** simulation results testify that the proposed redundancy optimization method is capable to build a reliable and economic smart grid communication network.

关键词： smart grid advanced metering infrastructure redundancy optimization dataconcentrator genetic algorithm

Hyponormal Toeplitz Operators on the Polydisk

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Acta Mathematica Sinica,English Series 2012年第2期28卷 333-348页

作者： Yu Feng LU Yan yue shi School of Mathematical Sciences Dalian University of TechnologyDalian 116024P.R.China

By bounded vector-valued functions and block matrix representations of Hankel operators, we completely characterize the hyponormality of Toeplitz operators on the Hardy space of the polydisk.

关键词： Hyponormality Toeplitz operator Hankel operator polydisk block matrix representation

Effects of Hirudin on High Glucose-Induced Oxidative Stress and Inflammatory Pathway in Rat Dorsal Root Ganglion Neurons

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Chinese Journal of Integrative Medicine 2020年第3期26卷 197-204页

作者： LIU Wei LIANG Xiao-chun shi yue Department of Traditional Chinese Medicine Peking Union Medical College Hospital Peking Union Medical College Chinese Academy of Medical Sciences

Objective:To investigate protective effects of hirudin on oxidative stress and apoptosis of spinal dorsal root ganglion cells in high-glucose rats at the cellular and molecular ***:Dorsal root ganglion neurons(DRGn)were harvested from embryonic day in 15 SD rats,purified and identificated after primary *** were divided into the normal control group,high-glucose(HG)group,positive control(alpha-lipoic acid,ALA)group,low-dose hirudin group(H1),medium-dose hirudin group(H2)and high-dose hirudin group(H3).The control group was cultured by neuron specific culture medium,while the HG group was cultured by neuron specific culture medium and 20 mmol/L glucose(HG medium).The hirudin groups were cultured by HG medium+0.25 IU/mL hirudin(H1),HG medium+0.5 IU/mL hirudin(H2)and HG medium+1 IU/mL hirudin(H3).The ALA group was cultured by HG medium +100μmol/L ALA.3-(4,5-dimethylthiazol-2-yl)-2,5-diphenylt etrazolium bromide(MTT)assay was used to explore the optimum concentration and intervention *** cytometry assay was used to detect the level of reactive oxygen series(ROS).Western blot and quantificational realtime polymerase chain reaction(qRT-PCR)were used to detect the expression of protein and mRNA of nuclear factor erythroid 2-related factor 2(Nrf-2),hemeoxygence-1(HO-1),nuclear factor-κB(NF-κB)and *** assay was used to test the apoptosis rate of different ***:After 24 h of culture,the cell activity of hirudin and ALA groups were higher than that of HG group,and there was a statistical difference between the H1 group and HG group(P<0.05).In hirudin groups,the apoptosis rate of cells,the expression of activated Caspase-3 protein and Caspase-3 mRNA were lower than those of HG group(P<0.01),higher than those of ALA group(P<0.01 or P<0.05).The ROS level of hirudin groups was higher than that of ALA group(P<0.01),lower than that of HG group(P<0.01 or P<0.05).The expression of NF-κB(P65)protein in H3 group were lower than those of HG g

关键词： hirudin diabetic peripheral neuropathy oxidative stress apoptosis dorsal root ganglion neuron

EXPERIMENTAL STUDY OF CONDENSATION HEAT TRANSFER CHA- RACTERISTICS OF HORIZONTAL TUBE BUNDLES IN VACUUM STATES

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Journal of Hydrodynamics 2012年第4期24卷 628-634页

作者： CHENG Shen SUN Feng-zhong shi yue-tao School of Energy Source and Power Engineering Shandong UniversityJinan 250061China

TO develop an excellent heat transfer element under the vacuum condition, experiments about the heat transfer performance of horizontal tube bundles of different materials under various vacuum conditions were carried out, including the stainless steel tube, the brass tube, the Ni-based implanted steel tube and the ion implanted brass tube. The relative trends show that the condensation heat transfer coefficient and the overall heat transfer coefficient of bundles of four materials all increase with the vacuum degree, especially, those of the Ni-based implanted steel tube and the ion implanted brass tube. Under a high vacuum condition （0.07 MPa）, the condensation heat transfer coefficient of the Ni-based implanted steel tube bundle is about 1.4 times of that of the stainless steel tube bundle, the condensation heat transfer coefficient of the ion implanted brass tube bundle is found to be about 1.3 times of that of the common brass tube bundle. Therefore, according to the condensation heat transfer characteristics studied under high vacuum conditions, it is believed that a dropwise condensation is partly achieved on the surface of these two implanted tube bundles, and the ion implantation is shown to be an effective method to achieve the dropwise condensation. Based on this study, it is believed that the Ni-based steel tube may replace the brass tube, which is more expensive as a heat transfer component.

关键词： vacuum heat transfer characteristics condensation heat transfer coefficient dropwise condensation

Shape change induced by g_(9/2) rotational alignment in ^(84,86)Mo

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Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1811-1814页

作者： LIU XuDong shi yue XU FuRong School of Physics Peking University Beijing 100871 China School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China Center for Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou 730000 China

Neutron-deficient Z ≈ N nuclei84,86Mo have been investigated using pairing-deformation self-consistent cranked shell modelcalculations up to spin I > 20 . Our calculations are in good agreement with the experimental data, indicating γ-soft triaxial shapesat low rotational frequency and well-deformed triaxial-oblate shapes at high rotational frequency for both nuclei. The shape changeis due to the alignments of the g9/2protons and g9/2neutrons.

关键词： shape change cranked shell model molybdenum

Sedimentary features and sequence stratigraphy of the successions around the Carboniferous-Permian boundary in the Ordos Basin:links to glacial and volcanic impacts

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Journal of Palaeogeography 2023年第3期12卷 358-383页

作者： Zhong-Shuai Hou shi-yue Chen Zhao Liang Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China Interdisciplinary Science Research Institute Hebei GEO UniversityShijiazhuang 050031China School of Geosciences China University of PetroleumQingdao 266580China

The sedimentary successions around the Carboniferous-Permian boundary(CPB)in the Ordos Basin were investigated using extensive outcrop,borehole,well logging,thin section,and geochemistry data to study sedimentary and sequence stratigraphic responses to glaciation and volcanism in paleotropical transitional *** the studied interval,five distinct lithofacies have been identified,including bauxite,coal,and carbonaceous shale(No.8+9 coal seams),sandstone(Qiaotou),limestone(Baode),and mudstone,which can be classified into three lithofacies *** most complete lithofacies associ-ation is composed of bauxite,coal,carbonaceous shale,sandstone,limestone/mudstone or their combinations from the bottom to the top,while coal and carbonaceous shale,as well as sandstone,are absent locally,resulting in the formation of the other two types of lithofacies *** occurrence of bauxite in-dicates shelf exposure and weathering,the occurrence of coal and carbonaceous shale indicates swampiness of the shelf,and the occurrence of sandstone reveals river rejuvenation;all of these are thought to be sedimentary responses to the transcontinental glacier expansion in Gondwana around the *** presence of limestone and mudstone indicates carbonate platform and lagoon deposition,respectively,in the context of the earliest Asselian transgression caused by volcanism-induced glacier *** lithofacies associations record the regressive-transgressive cycles that occurred because of glaciation and volcanism near the *** top surface of bauxite can be used as a sequence boundary,while the lowstand systems tract consists of the No.8+9 coal seams and the Qiaotou sandstone,and the transgressive systems tract consists of the overlying Baode limestone and laterally equivalent *** lowstand systems tract,which contains source rock and hydrocarbon reservoirs,and the overlying transgressive systems tract,which serves as cap rock,form an excellent source-reservoi

关键词： Glaciation Volcanism Incised valley Sequence stratigraphy Ordos basin

Simultaneous determination of 14 active constituents of Shengjiang Xiexin decoction using ultrafast liquid chromatography coupled with electrospray ionization tandem mass spectrometry

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Acta Pharmaceutica Sinica B 2017年第2期7卷 193-201页

作者： Gang Peng Huanyu Guan Xiaoming Wang yue shi Institute of Medicinal Plant Development Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100193China

An effective herbal medicinal prescription of Shengjiang Xiexin decoction(SXD) was used in treating the inflammatory bowel disease in *** this study,an ultrafast liquid chromatography-tandem mass spectrometry(UFLC-MS/MS) method was developed to separate and to simultaneously determine14 major active ingredients in *** separation was successfully accomplished on an Acquity BEH C18(100 mm × 2.1 mm,1.7 μm) column using gradient elution with 0.1%(v/v) formic acid water(A) and 0.1%(v/v) formic acid in methanol(B).Negative and positive electrospray ionization tandem mass spectrometry was used to detect the 14 analytes using its selective reaction monitoring(SRM) mode.A good linear regression relationship for each analyte was obtained over the range from3.88 ng/mL to 4080 ng/*** precision was evaluated by intra-and inter-day assays with a relative standard deviation(RSD) of less than 6.25%.The recovery measured at three concentration levels varied from 98.72%to 103.47%.The overall limits of quantification(LOQ) ranged from 2.05 ng/mL to4.72 ng/*** method was successfully implemented in the qualitative and quantitative analyses of the14 chemical constituents in *** results showed that the developed UFLC-MS/MS method was linear and *** method could be used reliably as a quality control method for SXD.

关键词： Inflammatory bowel disease Quality control UFLC–MS/MS Determination Shengjiang Xiexin decoction