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| 1 | Current Control Strategy of Chain Circuit STATCOM显示文摘在链式静止同步补偿器(static synchronous compen-sator,STATCOM)小信号交流模型的基础上,提出简化的STATCOM电流控制闭环系统;分别对典型Ⅰ型、典型Ⅱ型控制系统的电流调节器进行参数优化及比较,分析表明,对于电流阶跃响应,系统处于线性控制状态时超调量相对百分比不变,处于限幅非线性状态时超调量绝对值不变;采用比例调节器的典型I型系统稳态精度稍差,但动态控制精度较高,适合用于链式STATCOM工程装置;在a-b-c坐标系下仿真表明,应用优化设计的典型Ⅰ型系统控制参数,链式STATCOM输出电流可以快速跟踪参考值变化,具有良好的稳定性和跟踪精度。 | WANG Xuan FU Jian TENG Letian SUN Lijing ZHAO Ruibin WU Shouyuan DENG Zhanfeng | 2012 | 中国电机工程学报2012，32，12： | 15 |
| 2 | Rice functional genomics:decades'efforts and roads ahead显示文摘Rice(Oryza sativa L.)is one of the most important crops in the world.Since the completion of rice reference genome sequences,tremendous progress has been achieved in understanding the molecular mechanisms on various rice traits and dissecting the underlying regulatory networks.In this review,we summarize the research progress of rice biology over past decades,including omics,genome-wide association study,phytohormone action,nutrient use,biotic and abiotic responses,photoperiodic flowering,and reproductive development(fertility and sterility).For the roads ahead,cutting-edge technologies such as new genomics methods,high-throughput phenotyping platforms,precise genome-editing tools,environmental microbiome optimization,and synthetic methods will further extend our understanding of unsolved molecular biology questions in rice,and facilitate integrations of the knowledge for agricultural applications. | Rongzhi Chen Yiwen Deng Yanglin Ding Jingxin Guo Jie Qiu Bing Wang Changsheng Wang Yongyao Xie Zhihua Zhang Jiaxin Chen Letian Chen Chengcai Chu Guangcun He Zuhua He Xuehui Huang Yongzhong Xing Shuhua Yang Daoxin Xie Yaoguang Liu Jiayang Li | 2022 | Science China(Life Sciences)2022，65，1： | 12 |
| 3 | Isolation and characterization of 49 polymorphic microsatellite loci for Decapterus maruadsi using SLAF-seq, and cross-amplifi cation to related species显示文摘Decapterus maruadsi is a commercially important species in China, but has been heavily exploited in some areas. There is a growing need to develop microsatellites promoting its genetic research for the adequate management of this ?shery resources. The recently developed speci?c-locus ampli?ed fragment sequencing(SLAF-seq) is an effcient and high-resolution method for genome-wide microsatellite markers discovery. In this study, 28 905 microsatellites(mono-to hexa-nucleotide repeats) were identi?ed using SLAF-seq technology, of which di-nucleotide was the most frequent(13 590, 47.02%), followed by mono-nucleotide(8 138, 28.15%), tri-nucleotide(5 727, 19.81%), tetra-nucleotide(1 104, 3.82%), pentanucleotide(234, 0.81%), and hexa-nucleotide(112, 0.39%). One hundred and thirty-two microsatellite loci(di-and tri-nucleotide) were randomly selected for ampli?cation and polymorphism, of which 49 were highly polymorphic and well-resolved. The average number of alleles per locus was 13.63, ranging from 4 to 25, and allele sizes varied between 110 bp and 309 bp. The observed heterozygosity( Ho) and expected heterozygosity( He) ranged from 0.233 to 1.000 and from 0.374 to 0.959, with mean values of 0.738 and0.836, respectively. The polymorphism information content(PIC) ranged from 0.341 to 0.941(mean=0.806).However, 12 loci deviated from Hardy-Weinberg equilibrium. Furthermore, transferability tests were also successful in validating the utility of the developed markers in ?ve phylogenetically related species of family Carangidae. A total of 48 microsatellite markers were successfully cross-ampli?ed in Decapterus macarellus, Decapterus macrosoma, Decapterus kurroides, Trachurus japonicus, and Selaroides leptolepis.The present microsatellites provided the ?rst known set of microsatellite DNA markers for D. maruadsi,D. macarellus, D. kurroides, and D. macrosoma, and would be useful for further population genetic and molecular phylogeny studies as well as help with the ?sheries management formulation and implementation of the understudied species. | NIU Sufang ZHAI Yun WU Renxie ZHANG Haoran TIAN Letian DENG Jiaxin XIAO Yao | 2019 | Journal of Oceanology and Limnology2019，37，1： | 2 |
| 4 | The Study of the Coupled Vibration Characteristics of Bladed Disk in Steam Turbine显示文摘 | Letian Wang and Q J Meng | 1998 | Preceedings of the Fourth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery1998，，： | 1 |
| 5 | Genome‑wide DNA methylation and transcriptome analyses reveal the key gene for wool type variation in sheep显示文摘Background Wool fibers are valuable materials for textile industry.Typical wool fibers are divided into medullated and non-medullated types,with the former generated from primary wool follicles and the latter by either primary or secondary wool follicles.The medullated wool is a common wool type in the ancestors of fine wool sheep before breeding.The fine wool sheep have a non-medullated coat.However,the critical period determining the type of wool follicles is the embryonic stage,which limits the phenotypic observation and variant contrast,making both selection and studies of wool type variation fairly difficult.Results During the breeding of a modern fine(MF)wool sheep population with multiple-ovulation and embryo transfer technique,we serendipitously discovered lambs with ancestral-like coarse(ALC)wool.Whole-genome rese-quencing confirmed ALC wool lambs as a variant type from the MF wool population.We mapped the significantly associated methylation locus on chromosome 4 by using whole genome bisulfite sequencing signals,and in turn identified the SOSTDC1 gene as exons hypermethylated in ALC wool lambs compare to their half/full sibling MF wool lambs.Transcriptome sequencing found that SOSTDC1 was expressed dozens of times more in ALC wool lamb skin than that of MF and was at the top of all differentially expressed genes.An analogy with the transcriptome of coarse/fine wool breeds revealed that differentially expressed genes and enriched pathways at postnatal lamb stage in ALC/MF were highly similar to those at the embryonic stage in the former.Further experiments validated that the SOSTDC1 gene was specifically highly expressed in the nucleus of the dermal papilla of primary wool follicles.Conclusion In this study,we conducted genome-wide differential methylation site association analysis on differen-tial wool type trait,and located the only CpG locus that strongly associated with primary wool follicle development.Combined with transcriptome analysis,SOSTDC1 was identified as the only gene at this locus that was specifically overexpressed in the primary wool follicle stem cells of ALC wool lamb skin.The discovery of this key gene and its epigenetic regulation contributes to understanding the domestication and breeding of fine wool sheep. | Jiankui Wang Guoying Hua Ganxian Cai Yuhao Ma Xue Yang Letian Zhang Rui Li Jianbin Liu Qing Ma Keliang Wu Yaofeng Zhao Xuemei Deng | 2023 | Journal of Animal Science and Biotechnology2023，14，6： | 0 |
| 6 | Deep Learning-Based Semantic Feature Extraction:A Literature Review and Future Directions显示文摘Semantic communication,as a critical component of artificial intelligence(AI),has gained increasing attention in recent years due to its significant impact on various fields.In this paper,we focus on the applications of semantic feature extraction,a key step in the semantic communication,in several areas of artificial intelligence,including natural language processing,medical imaging,remote sensing,autonomous driving,and other image-related applications.Specifically,we discuss how semantic feature extraction can enhance the accuracy and efficiency of natural language processing tasks,such as text classification,sentiment analysis,and topic modeling.In the medical imaging field,we explore how semantic feature extraction can be used for disease diagnosis,drug development,and treatment planning.In addition,we investigate the applications of semantic feature extraction in remote sensing and autonomous driving,where it can facilitate object detection,scene understanding,and other tasks.By providing an overview of the applications of semantic feature extraction in various fields,this paper aims to provide insights into the potential of this technology to advance the development of artificial intelligence. | DENG Letian ZHAO Yanru | 2023 | ZTE Communications2023，21，2： | 0 |
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