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| 1 | Shifts in the World Science Center: Space- time Characteristics and Disciplinary Analysis显示文摘 | Liang liming Feng Ye Wu Yishan | 2002 | Interdisciplinary Science Reviews2002,,3: | 1 |
| 2 | A survey study on motivations for citation:A case study on periodicals research and library and information science community in China显示文摘A large number of theoretical and empirical studies on citation behavior have been conducted internationally.Although some theoretical studies on such topic have been carried out in China,few studies have focused specifically on this area from an empirical perspective,resulting in the lack of literature on the findings of actual surveys.To address this challenge,we conducted two questionnaire surveys to understand the motivations of the researchers on citation.One survey covers the authors who published articles in Chinese Journal of Scientific and Technical Periodicals,while the other targets the most productive and most cited Chinese authors in library and information science.The results show that citation behavior is not only motivated by rational factors,but also by other social factors. | MA Feng WU Yishan | 2009 | Chinese Journal of Library and Information Science2009,,3: | 1 |
| 3 | Photonic crystal rod-based high-performance ultrafast fiber laser system显示文摘In this paper,we innovatively conduct a Porro prism-based beam pointing stability promotion technique research and realize a high-performance rod-type photonic crystal fiber-based chirped pulse amplification(CPA)system,mainly including a frequency-reduced all-fiber pre-amplification stage,photonic crystal rod-based main amplification stage,and 1600 lines/mm transmission grating-pair compressor.Laser output with average power of 50 W,repetition rates of500 kHz,pulse energy of 100μJ,pulse duration of 830 fs,beam quality of M2<1.3,power fluctuation of 0.55%root mean square,and beam pointing drift of 19μrad/?C over 8 h is realized.The high-performance laser system has an enormous application potential in fundamental research and precision manufacturing fields. | Zhiguo Lv Zhi Yang Qianglong Li Feng Li Yishan Wang Wei Zhao Xiaojun Yang | 2020 | High Power Laser Science and Engineering2020,8,4: | 1 |
| 4 | Two-step model of paleohexaploidy, ancestral genome reshuffling and plasticity of heat shock response in Asteraceae显示文摘An ancient hexaploidization event in the most but not all Asteraceae plants,may have been responsible for shaping the genomes of many horticultural,ornamental,and medicinal plants that promoting the prosperity of the largest angiosperm family on the earth.However,the duplication process of this hexaploidy,as well as the genomic and phenotypic diversity of extant Asteraceae plants caused by paleogenome reorganization,are still poorly understood.We analyzed 11 genomes from 10 genera in Asteraceae,and redated the Asteraceae common hexaploidization(ACH)event∼70.7–78.6 million years ago(Mya)and the Asteroideae specific tetraploidization(AST)event∼41.6–46.2 Mya.Moreover,we identified the genomic homologies generated from the ACH,AST and speciation events,and constructed a multiple genome alignment framework for Asteraceae.Subsequently,we revealed biased fractionations between the paleopolyploidization produced subgenomes,suggesting the ACH and AST both are allopolyplodization events.Interestingly,the paleochromosome reshuffling traces provided clear evidence for the two-step duplications of ACH event in Asteraceae.Furthermore,we reconstructed ancestral Asteraceae karyotype(AAK)that has 9 paleochromosomes,and revealed a highly flexible reshuffling of Asteraceae paleogenome.Of specific significance,we explored the genetic diversity of Heat Shock Transcription Factors(Hsfs)associated with recursive whole-genome polyploidizations,gene duplications,and paleogenome reshuffling,and revealed that the expansion of Hsfs gene families enable heat shock plasticity during the genome evolution of Asteraceae.Our study provides insights on polyploidy and paleogenome remodeling for the successful establishment of Asteraceae,and is helpful for further communication and exploration of the diversification of plant families and phenotypes. | Xiangming Kong Yan Zhang Ziying Wang Shoutong Bao Yishan Feng Jiaqi Wang Zijian Yu Feng Long Zejia Xiao Yanan Hao Xintong Gao Yinfeng Li Yue Ding Jianyu Wang Tianyu Lei Chuanyuan Xu Jinpeng Wang | 2023 | Horticulture Research2023,10,6: | 0 |
| 5 | Allotetraploidization event of Coptis chinensis shared by all Ranunculales显示文摘Coptis chinensis Franch.,also named Chinese goldthread is a member of Ranunculaceae in the order Ranunculales and represents an important lineage of early eudicots with traditional medicinal value.In our study,by using syntenic analysis combined with phylogenomic analysis of C.chinensis and four other representative genomes from basal and core eudicots,we confirmed that the WGD event in C.chinensis was shared by Aquilegia coerulea and Papaver somniferum L.and quickly occurred after Ranunculales diverged from other eudicots,likely a Ranunculales common tetraploidization(RCT).The synonymous nucleotide substitutions at synonymous sites distribution of syntenic blocks across these genomes showed that the evolutionary rate of the P.somniferum genome is faster than that of the C.chinensis genome by approximately 13.7%,possibly due to Papaveraceaes having an additional special tetraploidization event(PST).After Ks correction,the RCT dated to 115—130 million years ago(MYA),which was close to the divergence of Ranunculaceaes and Papaveraceaes approximately115.45—130.51 MYA.Moreover,we identified homologous genes related to polyploidization and speciation and constructed multiple sequence alignments with different reference genomes.Notably,the event-related subgenomes in the basal genomes all showed genomic fractionation bias,suggesting a likely allopolyploid nature of the RCT,PST and T-Alpha and T-Beta events in Tetracentron sinense.In addition,we detected that the sixteen P450 subfamilies were markedly expanded in the genomes of Ranunculales,and most of them were related to the RCT and PST events.We constructed a new platform for Early Eudicot Comparative Genomic Research(http://www.cgrpoee.top/index.html)to store more information.In summary,our findings support the WGD of C.chinensis shared by Ranunculales,which is likely an allotetraploidization event.This present effort offered new insights into the evolution of key polyploidization events and the genes related to secondary metabolites during the diversification of early eudicots. | Yan Zhang Weina Ge Jia Teng Yanmei Yang Jianyu Wang Zijian Yu Jiaqi Wang Qimeng Xiao Junxin Zhao Shaoqi Shen Yishan Feng Shoutong Bao Yu Li Yuxian Li Tianyu Lei Yuxin Pan Lan Zhang Jinpeng Wang | 2024 | Horticultural Plant Journal2024,10,1: | 0 |
| 6 | Geology,Genetic Types and Metallogeny of Gold Deposits in the Eastern Tianshan,Xinjiang显示文摘As a typical Palaeozoic island arc system, the eastern Tianshan area, Xinjiang, is different from eastern China but similar to the Meso-Cenozoic island arc metallogenic provinces along the coast of the Pacific Ocean in metallogenic environment, geology and geochemistry. Three types of gold deposits, ductile shear zone-hosted gold deposits (Kanggur ), magmatic hydrothermal gold deposits (Jinwozi) and volcanic- or subvolcanic-hosted gold deposits (Xitan and Mazhuangshan), have been identified in this area. Regionally, gold deposits are structurally controlled by the Kanggur Tag ductile shear zone, Shaquanzi fault, Hongliuhe fault and Yamansu fault. Generally, gold mineralization occurs in the transition zones from volcanic rocks to sedimentary rocks. The horizon bearing well-developed jasper is an important indicator for gold mineralization. Each of the three types of gold deposits has its distinctive metallogenic background and geological-geochemical characteristics. | FENG Jianzhong ZENG Yishan FU Shuixing | 2000 | Acta Geologica Sinica(English Edition)2000,74,3: | 0 |