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Journal of Integrative Agriculture 2014年第8期13卷 1766-1771页

作者： LI chun-hong cao Jie ZHOU Yong-zhi ZHANG Hou-shuang GONG hai-yan ZHOU Jin-lin Key Laboratory of Animal Parasitology Ministry of Agriculture/Shanghai Veterinary Research Institute Chinese Academy of Agricultural Sciences

Ixodid ticks play an important role in the transmission of a variety of zoonoses of viral, bacterial and protozoan origin, and they also harbor a wealth of microorganisms. To gain more detailed insights into the potential interactions between bacterial flora and tick-borne pathogens, we investigated the midgut bacterial flora of laboratory-reared Haemaphysalis longicornis, Hyalomma asiaticum and Rhipicephalus haemaphysaloides. Based on morphological, biochemical, and 16 S rDNA sequencing results, we identified 15 species belonging to 12 genera in the midgut of the three ticks. The bacterial communities were similar to those found in other studies of hematophagous arthropods. Kocuria sp. was the most frequently isolated species and its 16 S rDNA gene sequence was very similar to Kocuria koreensis P31 T. To our knowledge, this is the first report of the bacterial flora of tick midguts and the results show that there were many different bacterial species in each tick species. Among the most common genera, there may have been a novel species in the genus Kocuria. The results might be the first step for looking for different aspects of the pathogen and tick interaction.

关键词： bacteria Kocuria sp. tick midgut

First total synthesis of a naturally occurring nucleoside disulfide:9-(5'-Deoxy-5'-thio-β-D-xylofuranosyl)adenine disulfide

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Chinese Chemical Letters 2012年第9期23卷 996-998页

作者： hai Xin Ding Ling Cui Da Ru chun Yang Ban Peng cao Qi Sun Qiang Xiao Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science&Technology Normal UniversityChina Nanchang 330013

A naturally occurring nucleoside disulfide, 9-（51-deoxy-5t-thio-β-D-xylofuranosyl）adenine disulfide, was first synthesized from o-xylose over 7 steps in 20% overall yield. The key step involved *** glycosylation of... 详细信息

关键词： Naturally occurring nucleoside Total synthesis Vorbriiggen glycosylation Marine sponge Nucleoside disulfide

Controlled synthesis and optical properties of Ce^(3+)/Tb^(3+) co-doped BaGdF_5 nanocrystals

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Rare Metals 2015年第9期34卷 673-678页

作者： chun-Yan cao An Xie Xiao-Guang Yu College of Mathematics and Physics Jinggangshan University School of Materials Science and Engineering Xiamen University of Technology

Based on a hydrothermal method, the Ce3+/Tb3+ co-doped Ba Gd F5 nanocrystals were synthesized by controlling the introduction concentration of Ba2+ and Gd3+. The samples were characterized by X-ray diffraction(XRD), field emission scanning electron microscopy(FESEM) images, photoluminescence(PL) excitation, and emission spectra, as well as the photoluminescence dynamic decay curves. With the increase of the Ba2+ concentration in the synthesis procedure, the positions of diffraction peaks of XRD patterns move toward lower degree, and the case of the samples synthesized with the increase of the Gd3+ concentration is contrary, which consists well with each other. The FE-SEM images suggest that the BaGdF5 nanocrystals are in spherical morphology,and the average diameters decrease with the increase of Ba2+ or Gd3+ concentration. For the 4f–5d transition of Ce3+ is sensitive to the environment of local lattice, the PL excitation and emission spectra of the samples are different. The 4f–4f transition of Tb3+ also presents different optical properties in different host lattices. The variations of the optical properties of Ce3+ and Tb3+ as well as the lifetime of the 5D4+7F5 emission of Tb3+ are also consistent well with each other in the two series of samples.

关键词： Hydrothermal synthesis Optical properties Nanocrys

A novel robust design method for improving stability of optimized structures

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Acta Mechanica Sinica 2015年第1期31卷 104-111页

作者： Ming-Jie cao hai-Tao Ma Peng Wei State Key Laboratory of Subtropical Building Science Department of Civil Engineering South China University of Technology State Key Laboratory of Structural Analysis of Industrial Equipment Dalian University of Technology

It is known that structural optimization may lead to designs of structures having low stability and sometimes even kinematically unstable designs. This paper presents a robust design method for improving the stability of opti mized structures. A new approach is proposed, in which cer tain perturbation loads are introduced and the corresponding compliance is added to the objective function as a penaliza tion. The stability of the optimized structures can thus be improved substantially by considering structural responses to the original and the introduced loads. Numerical exam ples show the simplicity and effectiveness of the proposed method.

关键词： Structural optimization Robust design Penal-ization Perturbation loads

Endpoint Estimates for Multilinear Fractional Integrals with Non-doubling Measures

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Acta Mathematicae Applicatae Sinica 2014年第3期30卷 755-764页

作者： hai-bo LIN Da-chun YANG School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex SystemsMinistry of education College of Science China Agricultural University

Under the assumption that μ is a non-doubling measure on R^d which only satisfies the polynomial growth condition, the authors obtain the boundedness of the multilinear fractional integrals on Morrey spaces, weak-Morrey spaces and Lipschitz spaces associated with it, which, in the case when μ is the d-dimensional Lebesgue measure, also improve the known results.

关键词： multilinear fractional integral Morrey space weak-Morrey space Lipschitz space non-doubling measure

Psychological burden prediction based on demographic variables among infertile men with sexual dysfunction

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Asian Journal of Andrology 2019年第2期21卷 156-162页

作者： hai-Ming cao Zi Wan Yong Gao Jun-Long Zhang Yan Zhang hai-Peng Xiao Xiang-An Tu Xiang-Zhou Sun chun-Hua Deng Department of Urology The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080China Department of Urology The Second Affiliated Hospital of Bengbu Medical CollegeBengbu 233000China Reproductive Medicine Center The Key Laboratory for Reproductive Medicine of Guangdong ProvinceThe First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080China Department of Cardiovascular The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080China Department of Endocrinology The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080China Department of Andrology The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080China

There has been increasing interest in the psycho-socio-relational and sexual disorders of infertility,as the risk of psychological burden among in fertile men with sexual dysf un ctio ns is sign ifica *** purpose of this study was to develop and to validate a predictive model to estimate in dividual psychological burde n among in fertile men with sexual dysf unction and study the associati on betwee n *** nsive data were collected for in fertile men(n=480)who sought treatme nt for infertility in a reproductive medici ne center between June 2012 and December *** independent predictors of psychological burden from the least absolute shrinkage and selection operator,univariable and multivariable analyses were developed into two *** accuracy was compared between the *** explored the association between sexual dysfunction and psychological burden.A total of 480 patie nts were an a lyzed using 10-fold cross-validatio *** depende nt predictors of psychological burde n were incorporated into a model to measure anxiety(corrected-area under curve(AUC):77.3%)and a model to measure depression(corrected-AUC:70.2%).Anxiety and depression were both associated with erectile dysfunction(P0.05).Premature ejaculation was not found to be associated with depression(P>0.05).Predictive models for psychological burden among infertile men with sexual dysfunction are presented,and we found that there is an association between psychological burden and sexual *** to the models,proper counseling and treatment of sexual dysfunction in infertile men may reduce the psychological burden,help attain natural pregnancy,and improve the quality of life.

关键词： anxiety depression erectile dysfunction prediction premature ejaculatory

Audiological characteristics and exploratory treatment of a rare condition of acute-otitis-media-associated sudden sensorineural hearing loss

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World Journal of Clinical Cases 2021年第36期9卷 11311-11319页

作者： Xin cao hai-Jin Yi Department of Otolaryngology Head and Neck SurgeryBeijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China

BACKGROUND Acute otitis media(AOM)is a common disease that is more prevalent in *** studies concerning AOM-associated sudden sensorineural hearing loss are case reports and retrospective in nature,hence the etiology of AOM-associated sudden hearing loss has not been fully *** To analyze audiological characteristics of AOM-associated sudden hearing loss and evaluate efficacy of combined tympanostomy tube placement(TTP)and intratympanic *** Eight adult patients who were diagnosed with AOM-associated sudden hearing loss and ineffectively treated by conventional medical therapy were enrolled in this *** data were collected,and pure tone audiometry was performed to assess the audiological *** therapy with TTP and intratympanic methylprednisolone injection was given to the *** Mixed or sensorineural hearing loss was observed at high frequencies(2–4 kHz).All the cases in this study were cured after TTP and intratympanic *** treatment,the average hearing threshold at affected frequencies was significantly lower than those in the pretreatment group(P0.05).CONCLUSION AOM rarely induces sudden sensorineural hearing *** therapy with TTP and intratympanic methylprednisolone injection may be effective after failure of conventional medical treatment.

关键词： Acute otitis media Sudden hearing loss Hearing loss Tympanostomy tube placement Intratympanic methylprednisolone injection

Heteroscedasticity and/or Autocorrelation Checks in Longitudinal Nonlinear Models with Elliptical and AR(1) Errors

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Acta Mathematicae Applicatae Sinica 2012年第1期28卷 49-62页

作者： chun-Zheng cao Jin-Guan LIN College of Math&Physics Nanjing University of Information Science&TechnologyNanjing 210044China Department of Mathematics Southeast UniversityNanjing 210096China

The aim of this paper is to study the tests for variance heterogeneity and/or autocorrelation in nonlinear regression models with elliptical and AR（1） errors. The elliptical class includes several symmetric multivariate distributions such as normal, Student-S, power exponential, among others. Several diagnostic tests using score statistics and their adjustment are constructed. The asymptotic properties, including asymptotic chi-squave and approximate powers under local alternatives of the score statistics, are studied. The properties of test statistics are investigated through Monte Carlo simulations. A data set previously analyzed under normal errors is reanalyzed under elliptical models to illustrate our test methods.

关键词： autocorrelation elliptical distributions heteroscedasticity longitudinal data nonlinear model,score test

Tebufenozide resistance is associated with sex-linked inheritance in Plutella xylostella

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Insect Science 2015年第2期22卷 235-242页

作者： Guang-chun cao Zhao-Jun Han Entomology Department/Key Laboratory of Monitoring and Management of Plant Diseases and Insects Ministry of Agriculture NanjingAgricultural University Nanjing State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural Sciences Beijing China

The diamondback moth （DBM）, Plutella xylostella （L.）, is a major pest of cruciferous crops. Tebufenozide, a novel nonsteroidal ecdysone agonist, exhibits good efficacy and has played an increasingly important role in the control of Lepidopteran pests in China. For its resistance management, the genetic basis of tebufenozide resistance was studied using a laboratory selected resistant strain of DBM （resistant ratio, RR = 268）. A series of crosses with laboratory susceptible and resistant strains revealed that tebufenozide resistance in this pest was partially biased toward female heredity, with a large difference in RR for F1 （RR = 29） and rF1 progeny （RR = 147）. The dominance calculated for these 2 cross progeny was -0.788 and 0.09, respectively. Further analysis showed that the susceptible male and female larvae were similar in theft sensitivity to tebufenozide, but the resistant female larvae showed significantly higher resistance than the resistant male larvae. The heredity of tebufenozide resistance in DBM might be linked with the W sex chromosome, which suggested that DBM has the ability to develop high levels of resistance to tebufenozide. This is the first report of sex-linked inheritance oftebufenozide resistance in P xylostella （L.）.

关键词： insecticide resistance Plutella xylostella sex linkage tebufenozide

Quantum Key Distribution Using Four-Qubit W State

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Communications in Theoretical Physics 2006年第1X期46卷 65-68页

作者： cao hai-Jing SONG He-Shan Department of Physics Dalian University of Technology Dalian 116024 China

A new theoretical quantum key distribution scheme based on entanglement swapping is proposed, where four-qubit symmetric W state functions as quantum channel. It is shown that two legitimate users can secretly share a... 详细信息

关键词： quantum key distribution W state Bell-state measurement security