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Private Car Travel Characteristics and Influencing Factors in Chinese Cities——A Case Study of Guangzhou in Guangdong,China

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Chinese Geographical Science 2009年第4期19卷 325-332页

作者： CAO xiaoshu CHEN Hemei LI Linna ZHEN feng School of Geography and Planning Sun Yat-Sen University Guangzhou 510275 China School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China

Taking Guangzhou as a case,this paper adopted a questionnaire survey to gather first-hand data and analyzed the characteristics and influencing factors of private car travel in Chinese *** the research indicated,trip purposes of private car travel are mainly commute and business affairs with a more flexible trip in the urban core *** trip intensities are concentrated in a certain extent,with trip frequency being lower in the urban core area than the peripheral *** addition,the trip time has two significant peaks occurring in the morning and afternoon,and one trough in the *** trip spatial distribution is mainly within commute with both residence and employment in urban area and inward commute with residence in suburban area while employment in urban *** kinds of commutes direct to the urban *** study also shows that the characteristics of private car travel are principally influenced by two aspects:travelers' attributes and urban *** main travelers' social and economic attributes influenced it include the gender,education attainment,age,driving experience and per capita monthly household *** urban characteristics influenced it mainly cover the land use pattern,public traffic facilities and spatial attributes of residential environment.

关键词： car travel travel characteristics private car Chinese cities Guangzhou

Study on imaging method for measuring droplet size in large sprays

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Particuology 2015年第5期13卷 100-106页

作者： Wu Zhou Jiarui Hu Mingliang feng Bin Yang xiaoshu Cai School of Energy and Power Engineering University of Shanghai for Science and Technology

Information of droplet size and size distribution lays the basis for investigations of atomization mechanisms and performance optimization, However, the laser diffraction and phase Doppler particle analyzers have difficulty in accurately characterizing sprays with a wide range of droplet sizes and very large droplets, especially ira large number of droplets are aspherical. A method to measure size in such large- droplet sprays based on digital imaging with backward illumination was developed, including an image acquisition system and image process programs. Calibration of the measurement system was performed using a dot calibration target with different dot sizes. An experimental setup was designed and established to characterize spray nozzles under different operation loads, as well as different nozzle arrangements. Results show that the droplet size of sprays ranges from dozens of microns to several millimeters. The superiority of wide load range for such nozzles was indicated by the size-measurement results under half-load to full-load operations. The present study revealed that the image processing technique can be effectively implemented for in-line size measurements of sprays with a wide distribution of droplet size and aspherical droplets, which would be difficult to characterize bv other methods.

关键词： Digital image Spray size Wide size distribution Large droplets

Optimization of regularization parameter of inversion in particle sizing using light extinction method

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China Particuology 2007年第4期5卷 295-299页

作者： Mingxu Su feng Xu xiaoshu Cai Kuanfang Ren Jianqi Shen Institute of Particle and Two Phase Flow Measurement Technology University of Shanghai .for Science and Technology Shanghai 200093 China LESP UMR6614/CORIA CNRS-Universite France INSA de Rouen 76801 France

In particle sizing by light extinction method, the regularization parameter plays an important role in applying regularization to find the solution to ill-posed inverse problems. We combine the generalized cross-validation （GCV） and L-curve criteria with the Twomey-NNLS algorithm in parameter optimization. Numerical simulation and experimental validation show that the resistance of the newly developed algorithms to measurement errors can be improved leading to stable inversion results for unimodal particle size distribution.

关键词： Particle size analysis Light extinction Inversion algorithm Regularization parameter

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树鼩肝移植模型的建立

昆明医科大学学报 2018年第9期39卷 6-10页

作者：钱程司敬琅唐波肖曙峰付必莽张捷昆明医科大学第二附属医院肝胆胰外科四病区云南昆明650101 普洱市人民医院云南普洱665000

目的探寻树鼩肝移植模型建立的方法.方法改良"二袖套法"建立树鼩肝移植模型,观察术后树存活率,并行肝脏组织病理学检查.结果定型手术成功率为100%(30/30),树24 h存活率为76.66%(23/30),1周存活率为30.00%(9/30),最长存活时间为11 d.结... 详细信息

目的探寻树鼩肝移植模型建立的方法.方法改良"二袖套法"建立树鼩肝移植模型,观察术后树存活率,并行肝脏组织病理学检查.结果定型手术成功率为100%(30/30),树24 h存活率为76.66%(23/30),1周存活率为30.00%(9/30),最长存活时间为11 d.结论通过改良型二袖套法可成功建立树鼩肝移植模型.

关键词：肝移植树二袖套法

Particle sizing in dense two-phase droplet systems by ultrasonic attenuation and velocity spectra

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Science China(Technological Sciences) 2009年第6期52卷 1502-1510页

作者： SU MingXu CAI xiaoshu XUE MingHua DONG LiLi XU feng Institute of Particle and Two-phase Flow Measurement University of Shanghai for Science and TechnologyShanghai 200093China

Size and size distribution of particles in particulate two-phase flow play an important role in a wide variety of industrial areas,while their measurement still remains a hard task till *** wave as a mechanical vibration contains plenty of information about medium when it passes *** the size distribution could be extracted from the measured ultrasonic attenuation and velocity spectra by means of well established models and data processing *** paper contributes to the extraction of information of droplet size of a two-phase fat emulsion simultaneously from signals of broad-band ultrasonic attenuation and velocity *** to the formulated single particle scattering model,the relationship between particle size distribution and ultrasonic spectrum is *** sensitivities of ultrasonic spectra to the variation of particle size are ***-guishing features for attenuation and velocity spectra are *** calculations of inversion by optimum regularization factor method are carried out to yield the typical numerical results for *** on the proposed inversion algorithm and theoretical model,a fat emulsion sam-ple with a volume fraction up to 20% is measured and *** validate the proposed ultrasonic spectrum particle sizing method,the results are compared to those obtained from optical measure-ment.

关键词： two-phase flow ultrasonic particle sizing inversion

Vaginal Delivery and Breastfeeding Benefit Infant Immune Response to Hepatitis B Vaccine:A Prospective Cohort Study

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Journal of Clinical and Translational Hepatology 2023年第4期11卷 899-907页

作者： Huiqing Liu Lili Li Yali Li Minmin Liu Yarong Song feng Ding xiaoshu Zhang Jie Li Jinchang Municipal Center for Disease Control and Prevention JinchangGansuChina Department of Microbiology&Infectious Disease Center School of Basic Medical SciencesPeking University Health Science CenterBeijingChina Gansu Provincial Center for Disease Control and Prevention LanzhouGansuChina

Background and Aims:Natural vaginal delivery and breastfeeding favor the development of a strong immune system in infants,and the immune response of infants to vaccines is closely related to their immune *** large prospective cohort study aimed to explore the effects of delivery and feeding mode on infant’s immune response to hepatitis B vaccine(HepB).Methods:A total of 1,254 infants who completed the whole course of HepB immunization and whose parents were both HBsAg negative were enrolled from infants born in Jinchang City during 2018-2019 by cluster sampling ***:Twenty(1.59%)of the 1,254 infants were nonresponders to *** the other 1,234 infants,10.05%(124/1,234),81.69%(1,008/1,234)and 8.27%(102/1,234)of infants had low,medium,and high responses to HepB,*** regression analysis showed that cesarean section(OR:8.58,95%CI:3.11-23.65,p<0.001)and birth weight<3.18 kg(OR:5.58,95%CI:1.89-16.51,p=0.002)were independent risk factors for infant nonresponse to HepB,and cesarean section(OR:7.63,95%CI:4.64-12.56,p<0.001),formula feeding(OR:4.91,95%CI:1.47-16.45,p=0.001),maternal antiHBs negativity(OR:27.2,95%CI:10.67-69.35,p<0.001),paternal non-response history of HepB(OR:7.86,95%CI:2.22-27.82,p=0.014)and birth weight<3.22 kg(OR:4.00,95%CI:2.43-6.59,p<0.001)were independent risk factors for infant low response to *** cases where birth weight and genetic factors are unmodifiable and maternal anti-HBs effects are controversial,it makes sense to enhance infant response by changing delivery and feeding ***:Natural vaginal delivery and breastfeeding are beneficial to the infant’s immune response to HepB.

关键词： Hepatitis B vaccine Immune response Anti-HBs Vaginal delivery Breastfeeding

Particle size characterization by ultrasonic attenuation spectra

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Particuology 2008年第4期6卷 276-281页

作者： Mingxu Su, Minghua Xue, xiaoshu Cai, Zhitao Shang, feng Xu Institute of Particle and Two-Phase Flow Measurement, University of Shanghai for Science and Technology, Shanghai 200093, China Institute of Particle and Two-Phase Flow Measurement University of Shanghai for Science and Technology Shanghai 200093 China

This paper contributes to extracting information from signals of broadband ultrasonic attenuation spectrum for effective utilization in particle size characterization. The single particle scattering model and the coupled-phase model are formulated simultaneously, the relationship between particle size distribution and ultrasonic spectrum is established, and a convergence criterion for calculation is quantified. Demonstration inversion by the optimum regularization factor method is carried out to yield typical numerical results for discussion. With the experimental set-up developed by the Institute of Particle and Two-Phase Flow Measurement (IPTFM) at the University of Shanghai for Science and Technology, sand sediment particle size is measured by attenuation spectrum and analyzed using the above inversion algorithm and theoretical models. To validate the proposed ultrasonic spectrum particle sizing method, results are compared with those obtained by microscopy.

关键词： Ultrasonic spectrum Particle Size Inversion

Lipid–oligonucleotide conjugates for bioapplications

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National Science Review 2020年第12期7卷 1933-1953页

作者： Xiaowei Li Kejun feng Long Li Lu Yang xiaoshu Pan Hoda Safari Yazd Cheng Cui Juan Li Leonid Moroz Yujia Sun Bang Wang Xiang Li Tong Huang Weihong Tan Center for Research at Bio/Nano Interface Department of Chemistry and Department of Physiology and Functional GenomicsHealth Cancer CenterUF Genetics Institute and Mc Knight Brain InstituteUniversity of Florida School of Chemistry and Materials Engineering Huizhou University The Cancer Hospital of the University of Chinese Academy of Sciences Institute of Cancer and Basic Medicine(IBMC) Chinese Academy of Sciences Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory for Chemo/BioSensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of Biologyand Aptamer Engineering Center of Hunan ProvinceHunan University

Lipid–oligonucleotide conjugates(LONs) are powerful molecular-engineering materials for various applications ranging from biosensors to *** unique amphiphilic structures enable the self-assembly and the conveyance of information with high *** particular,LONs present remarkable potential in measuring cellular mechanical forces and monitoring cell *** are also essential sensing tools for intracellular imaging and have been employed in developing cell-surface-anchored DNA nanostructures for biomimetic-engineering *** incorporating therapeutic oligonucleotides or small-molecule drugs,LONs hold promise for targeted ***,LONs mediate the controllable assembly and fusion of vesicles based on DNA-strand displacements,contributing to nanoreactor construction and macromolecule *** this review,we will summarize the general synthesis strategies of LONs,provide some characterization analysis and emphasize recent advances in bioanalytical and biomedical *** will also consider the relevant challenges and suggest future directions for building better functional LONs in nanotechnology and materials-science applications.

关键词： lipid–oligonucleotide DNA nanostructure biosensor biomedicine bioanalysis nanoreactor

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决策理性视角下知识搜索对创新合法性的影响

科研管理 2022年第10期43卷 172-179页

作者：奉小斌马晓书浙江理工大学经济管理学院浙江杭州310018 上海大学管理学院上海200444

文章整合知识搜索、创新合法性与决策理性理论,以212家制造企业为研究对象,检验了适应式搜索与变革式搜索对创新合法性的影响,以及因果推理和效果推理的调节效应。实证结果表明:适应式搜索和变革式搜索对创新合法性分别有倒U型、U型作用... 详细信息

文章整合知识搜索、创新合法性与决策理性理论,以212家制造企业为研究对象,检验了适应式搜索与变革式搜索对创新合法性的影响,以及因果推理和效果推理的调节效应。实证结果表明:适应式搜索和变革式搜索对创新合法性分别有倒U型、U型作用;因果推理增强适应式搜索与创新合法性的关系,而削弱变革式搜索对创新合法性的作用,效果推理的调节作用与之相反;因果/效果双元决策理性正向调节适应式搜索和变革式搜索与创新合法性的关系。

关键词：知识搜索创新合法性因果推理效果推理