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A first-order dynamical model of hierarchical triple stars and its application

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Research in Astronomy and Astrophysics 2015年第11期15卷 1857-1866页

作者： Xing-Bo Xu Fang Xia yan-ning fu Purple Mountain Observatory Chinese Academy of Sciences University of Chinese Academy of Sciences

For most hierarchical triple stars, the classical double two-body model of zeroth-order cannot describe the motions of the components under the current observational accuracy. In this paper, Marchal＇s first-order analytical solution is implemented and a more efficient simplified version is applied to real triple stars. The results show that, for most triple stars, the proposed first-order model is preferable to the zerothorder model both in fitting observational data and in predicting component positions.

关键词： hierarchical triple fitting simplified stars dynamical Delaunay positions observational coordinate

Mass segregation of embedded clusters in the Milky Way

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Research in Astronomy and Astrophysics 2013年第3期13卷 277-289页

作者： Xin-Yue Er Zhi-Bo Jiang yan-ning fu Purple Mountain Observatory Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences

Embedded clusters are ideal laboratories for understanding the early phase of the dynamical evolution of clusters as well as massive star formation. An interesting observational phenomenon is that some of the embedded clusters show mass segregation, i.e., the most massive stars are preferentially found near the cluster center. We develop a new approach to describe mass segregation. Using this approach and the Two Micron All Sky Survey Point Source Catalog （2MASS PSC）, we analyze 18 embedded clusters in the Galaxy. We find that 11 of them are mass-segregated and that the others are not mass-segregated. No inversely mass-segregated cluster is found.

关键词： open clusters and associations: general -- stars: formation -- methods:data analysis

Three-dimensional orbit and physical parameters of HD 6840

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Research in Astronomy and Astrophysics 2016年第2期16卷 113-118页

作者： Xiao-Li Wang Shu-Lin Ren yan-ning fu Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China

HD 6840 is a double-lined visual binary with an orbital period of N7.5 years. By fitting the speckle interferometric measurements made by the 6 m BTA telescope and 3.5 m WIYN telescope, Balega et al. gave a preliminary astrometric orbital solution of the system in 2006. Recently, Griffin derived a precise spectroscopic orbital solution from radial velocities observed with OPH and Cambridge Coravel. However, due to the low precision of the determined orbital inclination, the derived component masses are not satisfying. By adding the newly collected astrometric data in the Fourth Catalog of Interferometric Measurements of Binary Stars, we give a three-dimensional orbit solution with high precision and derive the preliminary physical parameters of HD 6840 via a simultaneous fit including both astrometric and radial velocity measurements.

关键词： binaries spectroscopic -- astrometry -- stars fundamental parameters -- stars individual (HD 6840)

Gradient‑Layered MXene/Hollow Lignin Nanospheres Architecture Design for Flexible and Stretchable Supercapacitors

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Nano-Micro Letters 2025年第2期17卷 447-462页

作者： Haonan Zhang Cheng Hao Tongtong fu Dian Yu Jane Howe Kaiwen Chen ning yan Hao Ren Huamin Zhai Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials NanJing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering and Applied Chemistry University of Toronto200 College StreetTorontoON M5S 3E5Canada Department of Materials Science and Engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China

With the rapid development of flexible wearable electronics,the demand for stretchable energy storage devices has *** this work,a novel gradient-layered architecture was design based on single-pore hollow lignin nanospheres(HLNPs)-intercalated two-dimensional transition metal carbide(Ti_(3)C_(2)T_(x) MXene)for fabricating highly stretchable and durable *** depositing and inserting HLNPs in the MXene layers with a bottom-up decreasing gradient,a multilayered porous MXene structure with smooth ion channels was constructed by reducing the overstacking of MXene ***,the micro-chamber architecture of thin-walled lignin nanospheres effectively extended the contact area between lignin and MXene to improve ion and electron accessibility,thus better utilizing the pseudocapacitive property of *** these strategies effectively enhanced the capacitive performance of the *** addition,HLNPs,which acted as a protective phase for MXene layer,enhanced mechanical properties of the wrinkled stretchable electrodes by releasing stress through slip and deformation during the stretch-release cycling and greatly improved the structural integrity and capacitive stability of the *** electrodes and symmetric flexible all-solid-state supercapacitors capable of enduring 600%uniaxial tensile strain were developed with high specific capacitances of 1273 mF cm^(−2)(241 F g^(−1))and 514 mF cm^(−2)(95 F g^(−1)),***,their capacitances were well preserved after 1000 times of 600%stretch-release *** study showcased new possibilities of incorporating biobased lignin nanospheres in energy storage devices to fabricate stretchable devices leveraging synergies among various two-dimensional nanomaterials.

关键词： Hollow lignin nanospheres MXene Gradient-layered architecture Wrinkled electrodes Stretchable supercapacitors

Imperative for long-term management and surveillance in Kawasaki disease

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World Journal of Clinical Cases 2025年第4期13卷 61-63页

作者： yan Pan fu-Yong Jiao Department of Pediatrics The First Affiliated Hospital of Yangtze UniversityJingzhou 434000Hubei ProvinceChina Shaanxi Kawasaki Disease Diagnosis and Treatment Center Children’s HospitalShaanxi Provincial People’s Hospital of Xi’an Jiaotong UniversityXi’an 710000Shaanxi ProvinceChina

Kawasaki disease(KD)is a significant pediatric vasculitis known for its potential to cause severe coronary artery *** the effectiveness of initial treatments,such as intravenous immunoglobulin,KD patients can experience long-term cardiovascular issues,as evidenced by a recent case report of an adult who suffered a ST-segment elevation myocardial infarction due to previous KD in the World Journal of Clinical *** editorial emphasizes the critical need for long-term management and regular surveillance to prevent such *** drawing on recent research and case studies,we advocate for a structured approach to follow-up care that includes routine cardiac evaluations and preventive measures.

关键词： Kawasaki disease Long-term management Coronary artery aneurysm Surveillance Preventive care

Molecular Cloning and Sequence Analysis of the TSP-2,dUTPase and UBC-2 Gene from Taenia pisiformis

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Molecular Cloning and Sequence Analysis of the TSP-2,dUTPase...

Combining Two Methods to Molecular Cloning and Sequence Analysis of the Tp1 Gene from Taenia pisiformis

中国畜牧兽医学会家畜寄生虫学分会第六次代表大会暨第十一次学术研讨会

作者： Chen Lin,yang Deying,Gu Xiaobin,yan ning,Xie Yue,fu yan,Zhang Runhui,Zheng Wanpeng, yang Guangyou~* Department of Parasitology,College of Veterinary Medicine,Sichuan Agricultural University,Ya’an 625014,China.

TSP-2 is a member of transmembrane protein tetraspanin(TSP) *** triphosphatase(DUTPase) is an important enzyme which catalyzes hydrolysis of dUTP to deoxyuridylate and inorganic ***-2 is an isoform of the ubiquitin-coijugating *** order to clone TSP-2,dUTPase and UBC-2 Genes from Taenia pisiformis,three pairs of specific primers were designed and the open reading frames(ORFs) of TSP-2,dUTPase and UBC-2 genes were *** methods were used to further analyze the ORFs and putative amino acid *** TSP-2,dUTPase and UBC2’s ORFs consisted of nucleotide sequence of 621bp,447bp and 444bp,and deduced amino acid sequences of 206,148 and 147 residues,*** molecular masses of TSP-2,dUTPase,UBC-2 ORFs were 52.404kDa,37.703 kDa and 37.238kDa,*** predicted isoelectric points(PI) were 5.18 and 5.19,5.21,*** instability indexes were computed to be 32.61,54.48 and 45.99, *** deduced proteins of dUTPase and UBC2’s ORFs were unstable,but the TSP-2 was stable. In conclusion,the data will provide a basis for further functional analysis of these genes.

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Combining Two Methods to Molecular Cloning and Sequence Anal...

中国畜牧兽医学会家畜寄生虫学分会第六次代表大会暨第十一次学术研讨会

作者： Chen Lin,yang DeYing,Gu XiaoBin,yan ning,Xie Yue,fu yan,Zhang RunHui,Zheng WanPeng, yang GuangYou~* Department of Parasitology,College of Veterinary Medicine,Sichuan Agricultural University,Ya’an 625014,China.

In order to clone the Tp1 gene of Taenia pisiformis,according to a unigene similar to Ts1 gene (EU009656.1) which come from transcriptomes sequencing result cooperated with Beijing Genomics Institute,specific primers(1F1 and 1F2) were designed to amplify 3’-end of Tp1 gene using rapid-amplification of cDNA ends(RACE).After that,Based on the unigene similar to Ts1 gene and initiator sequence of Ts1 cDNA,we designed the downstream primer(1R) and upstream primer(1FO) respectively to amplify the 5’end of Tp1,and the full length of the Tp1 gene was *** then, specific primers were designed according to the full length of the Tp1 *** sequence(removal the initiator 39 bp) of the Tp1 gene was successfully amplified by RT-PCR,and cloned into pMD19-T vector. The recombinant plasmid pMD19-T-Tp1 was identified by PCR,restriction enzymes(BamH I+Nco I). Then the gene was analyzed by bioinformatics *** results showed that a 684 bp complete open reading frame of 227 amino acids with Mr 25.801kDa and PI 6.158 was discovered.A promoter located from 81 to 131 was *** promoter score was *** 9 possible B cell epitopes covered the whole polypeptide chains of Tp1 CDS regions,where hydrophilicity regions took the most *** had better hydrophilicity,flexible regions and higher antigen *** Tp1 gene was predicted to be situated in *** had 11 potential phosphorylation *** phosphorylation sites were composed of 4 serine and 7 *** secondary structure was analysised by Garnier-Robson and Chou-Fasman tool of DNAstar 6.***.84.6%alpha helix,1.32%beta sheet,3.07%beta turn and 1.14%random coil were predicted by the former,while 57.0%alpha helix,22.4%beta sheet and 15.8%beta turn by the later respectively. The main 9 flexible regions located at 6-47,50-57,64-70,91-96,100-108,122-140,149-161,187-199,and *** tertiary structure had not been gained by the way of homology modelling of molecular *** results provided

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同时裂解甲基化气相色谱法鉴别合成胶粘剂

色谱 2000年第4期18卷 364-366页

作者：李柏林丁军凯闫福宁范垂昌中国医科大学基础医学院辽宁沈阳110001 辽宁省刑事科学技术研究所辽宁沈阳110032

应用同时裂解甲基化气相色谱法 (Py Me GC)对合成胶粘剂进行了鉴别。采用热丝型裂解器、氢火焰离子化气相色谱仪、FFAP毛细管柱、程序升温方式及季铵盐甲基化试剂 ,对刑事案件中常见的丙烯酸酯类及其改性体、醋酸乙烯酯、聚乙烯醇等合... 详细信息

应用同时裂解甲基化气相色谱法 (Py Me GC)对合成胶粘剂进行了鉴别。采用热丝型裂解器、氢火焰离子化气相色谱仪、FFAP毛细管柱、程序升温方式及季铵盐甲基化试剂 ,对刑事案件中常见的丙烯酸酯类及其改性体、醋酸乙烯酯、聚乙烯醇等合成胶粘剂进行了测定 ,并对样品裂解各主要组分峰进行了GC/MS定性分析 ,同时比较了相同样本用常规裂解气相色谱法 (Py GC)测定的结果。结果表明 :Py Me GC法比Py GC法可获得更多的物质组分信息 ,是一种适用于法庭科学鉴定的方法。

关键词：裂解甲基化气相色谱法胶粘剂法医物证分析

The interaction between KIF21A and KANK1 regulates dendritic morphology and synapse plasticity in neurons

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Neural Regeneration Research 2025年第1期20卷 209-223页

作者： Shi-yan Sun Lingyun Nie Jing Zhang Xue Fang Hongmei Luo Chuanhai fu Zhiyi Wei Ai-Hui Tang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Brain Function and DiseaseMinistry of Education Key Laboratory for Membrane-less Organelles and Cellular DynamicsDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina CAS Center for Excellence in Molecular Cell Sciences Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Neurobiology School of Life SciencesSouthern University of Science and TechnologyShenzhenGuangdong ProvinceChina Brain Research Center Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina

Morphological alterations in dendritic spines have been linked to changes in functional communication between neurons that affect learning and ***-4 KIF21A helps organize the microtubule-actin network at the cell cortex by interacting with KANK1;however,whether KIF21A modulates dendritic structure and function in neurons remains *** this study,we found that KIF21A was distributed in a subset of dendritic spines,and that these KIF21A-positive spines were larger and more structurally plastic than KIF21A-negative ***,the interaction between KIF21A and KANK1 was found to be critical for dendritic spine morphogenesis and synaptic *** of either KIF21A or KANK1 inhibited dendritic spine morphogenesis and dendritic branching,and these deficits were fully rescued by coexpressing full-length KIF21A or KANK1,but not by proteins with mutations disrupting direct binding between KIF21A and KANK1 or binding between KANK1 and *** down KIF21A in the hippocampus of rats inhibited the amplitudes of long-term potentiation induced by high-frequency stimulation and negatively impacted the animals’cognitive *** together,our findings demonstrate the function of KIF21A in modulating spine morphology and provide insight into its role in synaptic function.

关键词： actin cytoskeleton dendrite KANK1 KIF21A microtubule spine morphology spine synaptic plasticity talin1