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| 1 | On the infimum problem of Hilbert space effects显示文摘The quantum effects for a physical system can be described by the set ε(H) of positive operators on a complex Hilbert space Hthat are bounded above by the identity operator Ⅰ. The infimum problem of Hilbert space effects is to find under what condition the infimum A∧B exists for two quantum effects A and B ∈ε(H). The problem has been studied in different contexts by R. Kadison, S. Gudder, M. Moreland, and T. Ando. In this note, using the method of the spectral theory of operators, we give a complete answer of the infimum problem. The characterizations of the existence of infimum A ∧ B for two effects A, B ∈ε(H) are established. | DU Hongke DENG Chunyuan LI Qihui | 2006 | Science China Mathematics2006，49，4： | 16 |
| 2 | Generation of graphene-based aerogel microspheres for broadband and tunable high-performance microwave absorption by electrospinning-freeze drying process显示文摘 | Fanbin Meng Huagao Wang Wei Zijian Chen Tian Li Chunyuan Li Yu Xuan Zuowan Zhou | 2018 | Nano Research2018，11，5： | 9 |
| 3 | Single-Step Organization of Plasmonic Gold Metamaterials with Self-Assembled DNA Nanostructures显示文摘Self-assembled DNA nanostructures hold great promise as nanoscale templates for organizing nanoparticles(NPs)with nearatomistic resolution.However,large-scale organization of NPs with high yield is highly desirable for nanoelectronics and nanophotonic applications.Here,we design fve-strand DNA tiles that can readily self-assemble into well-organized micrometerscale DNA nanostructures.By organizing gold nanoparticles(AuNPs)on these self-assembled DNA nanostructures,we realize the fabrication of one-and two-dimensional Au nanostructures in single steps.We further demonstrate the one-pot synthesis of Au metamaterials for highly amplifed surface-enhanced Raman Scattering(SERS).Tis single-step and high-yield strategy thus holds great potential for fabricating plasmonic metamaterials. | Shaokang Ren Jun Wang Chunyuan Song Qian Li Yanjun Yang Nan Teng Shao Su Dan Zhu Wei Huang Jie Chao Lianhui Wang Chunhai Fan | 2019 | Research2019，，1： | 4 |
| 4 | Preparation, Crystal Structure and Properties of a New Crystal Form of Diammonium 5,5'-bistetrazole-1,1'-diolate显示文摘 | Xiaojun Wang Shaohua Jin Chunyuan Zhang Lijie Li Shusen Chen Qinghai Shu | 2015 | Chinese Journal of Chemistry2015，33，11： | 3 |
| 5 | Quantum key distribution in 50-km optic fibers显示文摘In this paper, we report our recent experiment of long-distance fiber-optic plug and play quantum cryptography system wherein a Faraday-Mirror was used to compensate for the polarization mode dispersion and phase drifts. The pulse-biased coincident gate single-photon detection technique was used to effectively reduce the noises from the detrimental Rayleigh backscattering. We have achieved a quantum key distribution system with the working distance of 50 km, which was tested to be stable in more than 6 hours continuous work. And we also demonstrated the practical quantum communication in a local area network using the TCP protocol. | ZHOU Chunyuan WU Guang CHEN Xiuliang LI Hexiang ZENG Heping | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，2： | 2 |
| 6 | Temperature and symmetry energy of neutron-rich fragments in the 1A GeV^(124,136)Xe+Pb reactions显示文摘In this work we study the symmetry-energy coefficient of neutron-rich nuclei,and the temperature dependence of nuclear symmetry energy at low temperatures.An isobaric method is used to extract the symmetry-energy coefficients of neutron-rich nucleus(asym) at zero temperature(T) and asym/T at nonzero temperature in the measured 1A GeV124,136Xe+Pb reactions.T of fragment is obtained from the ratio of its asym to asym/T.The results show that,for fragment with the same neutron-excess(I=N Z),the heavier the fragment is,the higher T it has,and T tends to saturate around 1 MeV for the large mass fragments.It is also shown that the more neutron-rich the isobar is,the higher temperature it has.The T2dependence of symmetry energy of finite nucleus at low temperatures is verified by the extracted results. | MA Chunwang QIAO Chunyuan WANG Shanshan LU Fangmei CHEN Li GUO Meiting | 2013 | Nuclear Science and Techniques2013，24，5： | 2 |
| 7 | Analytic study on approach to adiabatic saturation temperature and the control scheme for the amount of water sprayed in the semi-dry FGD process显示文摘 | Li Yuzhong Tong Huiling Ma Chunyuan | | 0，，： | 1 |
| 8 | Phenylpropanoid metabolism and pigmentation show divergent patterns between brown color and green color cottons as revealed by metabolic and gene expression analyses显示文摘Background:Naturally-colored cotton has become increasingly popular because of their natural properties of coloration,UV protection,flame retardant,antibacterial activity and mildew resistance.But poor fiber quality and limited color choices are two key issues that have restricted the cultivation of naturally-colored cotton.To identify the possible pathways participating in fiber pigmentation in naturally-colored cottons,five colored cotton accessions in three different color types(with green,brown and white fiber)were chosen for a comprehensive analysis of phenylpropanoid metabolism during fiber development.Results:The expression levels of flavonoid biosynthesis pathway genes in brown cotton fibers were significantly higher than those in white and green cotton fibers.Total flavonoids and proanthocyanidin were higher in brown cotton fibers relative to those in white and green cotton fibers,which suggested that the flavonoid biosynthesis pathway might not participate in the pigmentation of green cotton fibers.Further expression analysis indicated that the genes encoding enzymes for the synthesis of caffeic acid derivatives,lignin and lignan were activated in the developing fibers of the green cotton at 10 and 15 days post-anthesis.Conclusions:Our results strengthen the understanding of phenylpropanoid metabolism and pigmentation in green and brown cotton fibers,and may improve the breeding of naturally-colored cottons. | LI Zhonghua SU Qian XU Mingqi YOU Jiaqi KHAN Anam Qadir LI Junyi ZHANG Xianlong TU Lili YOU Chunyuan | 2020 | Journal of Cotton Research2020，3，4： | 1 |
| 9 | Generalized n-idempotents and Hyper-generalized n-idempotents显示文摘 | Peng Chunyuan Li qihui Du Hongke | 2006 | Northeast Math J2006，22，4： | 1 |
| 10 | E3泛素连接酶TRIM40通过靶向MDA5及RIG-I从而负向调控抗病毒天然免疫应答显示文摘文章简介维甲酸诱导基因I(RIG-I)样受体(RLR)家族成员RIG-I及MDA5在宿主识别病毒RNA过程中起到重要作用。RLR在识别外源RNA后,可通过一系列活化信号引起Ⅰ型干扰素及炎性细胞因子的表达,从而帮助机体迅速建立抗病毒状态。 | Chunyuan Zhao Mutian Jia Hui Song Zhongxia Yu Wenwen Wang Qi Li Lining Zhang 赵伟 曹雪涛 | 2018 | 科学新闻2018，0，4： | 1 |
| 11 | Effects of Overwintering on the Survival and Vector Competence of Aedes albopictus in the Urban Life Cycle of Dengue Virus in Guangzhou,China显示文摘The Pearl River Delta,where Aedes albopictus(Ae.albopictus)is the only vector for dengue transmission,has exhibited one of the highest dengue burdens in southern China in recent decades.However,whether dengue virus(DENV)can overwinter in Ae.albopictus in the Pearl River Delta has not been determined to date.In this study,300 field-derived Ae.albopictus mosquitoes from Guangzhou that were infected with the predominant endemic DENV-1 strain were investigated under simulated urban balcony environment from October 16,2016,to June 16,2017.The vertical transmission of DENV in the infected overwintering Ae.albopictus was analyzed.The DENV infected overwintering mosquitoes were evaluated for viral load at nine-time points using reverse transcription-quantitative PCR.The vector competence of the infected overwintering Ae.albopictus was also investigated by using suckling mice.Adult mosquitoes and larvae were found during the observation period.The vertical transmission of DENV-1 was documented.The DENV-1-positive rates between overwintering males and females had no difference.The proportion of DENV-1-positive overwintering mosquitoes decreased over time and had no difference beyond three months after the experiment.Overwintering mosquitoes can spread DENV-1 to hosts.No engorged mosquitoes at an ambient temperature below 15℃were observed.The ratio of engorged mosquitoes was positively correlated with the ambient temperature ranging from 15 to 30℃.Our results demonstrated that DENV can overwinter in Ae.albopictus in the Pearl River Delta,Ae.albopictus is the competent vector for DENV,and maintain autochthonous dengue outbreaks in the Pearl River Delta through vertical transmission. | Yue Chen Ronghua Chen Jianrong Gao Chunyuan Li Jun Liu Zhijian Zhou Ruiwen Ren | 2021 | Virologica Sinica2021，36，4： | 1 |
| 12 | Analytic study on approach to adiabatic saturation tempersttwe and the control schea~e for the amount of water sprayed in the semi- dry FGD process 显示文摘 | Yuzhong Li Huiling Tong Chunyuan Ma | 2004 | Fuel2004，83，： | 1 |
| 13 | Transcription factor Pf-Rel regulates expression of matrix protein genes Prismalin-14 and MSI60 in the pearl oyster Pinctada fucata显示文摘Molluscan shell is a biomineral that consists of a highly organized calcium carbonate composite.Organisms mainly use matrix proteins to elaborately control the biomineralization process,but knowledge of their regulatory mechanisms is limited.The transcription factor Pf-Rel,which belongs to the Rel/nuclear factor-κB family,was shown to regulate transcription at the Nacrein promoter in the pearl oyster Pinctada fucata.Here,we further explored the transcriptional regulation mechanisms of Pf-Rel on the matrix proteins Prismalin-14 and MSI60.The relative expression levels of Prismalin-14 and MSI60 were high in the mantle edge and mantle pallial tissues of P.fucata.These three genes were significantly up-regulated after shell notching,suggesting that they might play important roles during shell formation.Importantly,Pf-Rel gene knockdown by RNA interference led to down-regulation of Prismalin-14 and MSI60 expression.In transient co-transfection assays,Pf-Rel significantly up-regulated the promoter activities of the Prismalin-14 and MSI60 genes in a dose-dependent manner.Furthermore,the promoter regions of Prismalin-14(-1794 to-1599 bp)and MSI60(-2244 to-1141 bp)were required for the activation by Pf-Rel.Altogether,these results suggest that the transcription factor Pf-Rel can up-regulate the expression of the matrix protein genes Prismalin-14 and MSI60 during shell formation in P.fucata,which improves our understanding of transcription regulation at the molecular level during molluscan shell development. | Chunyuan Li Yan Chen Liping Xie Rongqing Zhang | 2019 | Acta Biochimica et Biophysica Sinica2019，51，5： | 1 |
| 14 | Tissue culture of Sinningia speciosa and analysis of the in vitro-generated tricussate whorled phyllotaxis (twp) variant显示文摘 | XU Quanle HU Zhe LI Chunyuan | 2009 | In Vitro Cell Dev Biol Plant2009，45，： | 1 |
| 15 | Quantum key distribution in 50-km optic fibers显示文摘 | Chunyuan Zhou Guang Wu Xiuliang Chen Hexiang Li Heping Zeng | 2004 | Science in China Series G: Physics and Astronomy2004，，2： | 1 |
| 16 | A New Thresholding Method in Wavelet Packet Analysis for Image De-noising显示文摘 | Li Qingwu He Chunyuan | 2006 | IEEE International Conference on Mechatronics and Automation2006，，： | 1 |
| 17 | Analytic study on approach to adiabatic saturation temperature and the control scheme for the amount of water sprayed in the semi-dry FGD process 显示文摘 | Yuzhong Li Huiling Tong Chunyuan Ma | 2004 | Fuel2004，83，： | 1 |
| 18 | Biological Characteristics and Comprehensive Prevention and Treatment Methods of Acantholyda piceacola Xiao et Zhou显示文摘[Objective] The paper was to clear biological characteristics and comprehensive prevention and treatment methods of Acantholyda piceacola Xiao et Zhou. [Method] Through captive observation and field survey,the current situation,life history and life habits of A. piceacola were investigated; the occurrence degree of A. piceacola in various regions and the relationship between soil depth and number distribution of A. piceacola were studied. Moreover,the contrast test of a variety of control measures was conducted. [Result] A. piceacola needed one year or more to complete a generation; there were significant differences in insect plant rate and extremely significant differences in population density among different plots. Trunk injection and foliar spraying conducted before the forth larval stage had good protection effects on needles of Picea mongolica; trunk injection with 14% imidacloprid · dichlorvos at egg stage received the best control effect,the loss rate of needles was the lowest of 8. 43%,so the method could be massively popularized in the future. [Conclusion]The results provide a reference for the control of A. piceacola. | Ma Yunxia Li Gangtie Feng Fei Ma Yuan Pan Yiyong Tong Chunyuan | 2017 | Plant Diseases and Pests2017，8，5： | 1 |
| 19 | Direct comparison of culture-dependent and culture-independent molecular approaches reveal the diversity of fungal endophytic communities in stems of grapevine(Vitis vinifera)显示文摘Grapevines(Vitis vinifera)are colonized by ubiquitous microorganisms known as endophytes,which may have advantageous or neutral effects without causing disease symptoms.Certain endophytes are uncultivable,so culture-independent approaches such as next generation sequencing(NGS)can help for a better understanding of their ecology and distribution.To date,there are no studies which directly link NGS results with taxa derived from a culturing approach,integrating morphological and multi-gene phylogenetic analysis of endophytes.In this study,a culture-dependent and high-resolution culture-independent approach(next generation sequencing)were used to identify endophytes in grapevine stems.In the culture-dependent approach,a total of 94 isolates were recovered from 84 of 144 healthy grapevine stem fragments(colonization rate=58.3%).The study is unique as we used subsets of combined multi-gene regions to identify the endophytes to species level.Based on each multi-gene phylogenetic analysis,28 species belong to 19 genera(Acremonium,Alternaria,Arthrinium,Ascorhizoctonia,Aspergillus,Aureobasidium,Bipolaris,Botryosphaeria,Botrytis,Chaetomium,Cladosporium,Curvularia,Hypoxylon,Lasiodiplodia,Mycosphaerella,Nigrospora,Penicillium,Phoma,Scopulariopsis)were identified.A higher number of culturable fungi were obtained from 13 year-old vines,followed by eight and three yearold vines.In the culture-independent approach,a fungal richness of 59 operational taxonomic units(OTU)was detected,being highest in 13 year-old grapevines,followed by eight and three years.Even though the cultivation approach detected lower fungal richness,the results related to stem are consistent for fungal community composition and richness.Comparison of the fungal taxa identified by the two approaches resulted in an overlap of 53%of the fungal genera.Due to interspecific variability of the sequences from NGS,in many cases the OTUs(even with the highly abundant ones)were only assignable to order,family or genus level.Incorporating multi-gene phylogenies we successfully identified many of the NGS derived OTUs with poor taxonomic information in reference databases to the genus or species levels.Hence,this study signifies the importance of applying both culture-dependent and culture-independent approaches to study the fungal endophytic community composition in Vitis vinifera.This principle could also be applied to other host species and ecosystem level studies. | Asha J.Dissanayake Witoon Purahong Tesfaye Wubet Kevin D.Hyde Wei Zhang Haiying Xu Guojun Zhang Chunyuan Fu Mei Liu Qikai Xing Xinghong Li Jiye Yan | 2018 | Fungal Diversity2018，，3： | 1 |
| 20 | Novel discovery of schisandrin A regulating the interplay of autophagy and apoptosis in oligoasthenospermia by targeting SCF/c-kit and TRPV1 via biosensors显示文摘Oligoasthenospermia is the primary cause of infertility.However,there are still enormous challenges in the screening of critical candidates and targets of oligoasthenospermia owing to its complex mechanism.In this study,stem cell factor(SCF),c-kit,and transient receptor potential vanilloid 1(TRPV1)biosensors were successfully established and applied to studying apoptosis and autophagy mechanisms.Interestingly,the detection limit reached 2.787×10^(-15)g/L,and the quantitative limit reached 1.0×10^(-13)g/L.Furthermore,biosensors were used to investigate the interplay between autophagy and apoptosis.Schisandrin A is an excellent candidate to form a system with c-kit similar to SCF/c-kit with a detection constant(K_(D))of 5.701×10^(-11)mol/L,whereas it had no affinity for SCF.In addition,it also inhibited autophagy in oligoasthenospermia through antagonizing TRPV1 with a K_(D) of up to 4.181×10^(-10)mol/L.In addition,in vivo and in vitro experiments were highly consistent with the biosensor.In summary,high-potency schisandrin A and two potential targets were identified,through which schisandrin A could reverse the apoptosis caused by excessive autophagy during oligoasthenospermia.Our study provides promising insights into the discovery of effective compounds and potential targets via a well-established in vitro-in vivo strategy. | Lijuan Ma Boyi Li Jinchen Ma Chunyuan Wu Nan Li Kailin Zhou Yun Yan Mingshuang Li Xiaoyan Hu Hao Yan Qi Wang Yanfei Zheng Zhisheng Wu | 2023 | Acta Pharmaceutica Sinica B2023，13，6： | 1 |
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