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Procr~+ stem cells: from vessel to blood

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National Science Review 2017年第4期4卷 523-524页

作者： yu lan Institute of Hematology School of MedicineJinan University

Isolation of stem cells at the single-cell level,which largely relies on discovering specific markers,is pivotal to unveiling their molecular and functional heterogeneity and,ultimately,to inspire novel strategies with high efficiency for regeneration *** a transmembrane protein,Protein C receptor(Procr,also known as endothelial protein C receptor)has been identified as an explicit and faithful marker for the longterm repopulating hematopoietic stem

关键词： from vessel to blood stem cells Procr HSC

Metastatic low-grade endometrial stromal sarcoma with variable morphologies in the ovaries and mesentery: A case report

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World Journal of Clinical Cases 2022年第23期10卷 8384-8391页

作者： Hai-yun yu yu-lan Jin Department of Pathology Beijing Obstetrics and Gynecology HospitalCapital Medical University.Beijing Maternal and Child Health Care HospitalBeijing 100003China

BACKGROUND Low-grade endometrial stromal sarcoma(LGESS)classically exhibits a proliferative ***,morphological variation of extrauterine tumors presents a diagnostic *** SUMMARY We report the case of a 76-year-old female patient with extensive extrauterine and abdominal neoplastic *** tomography showed massive pleural and ascitic fluid,and there was an increase in serum cancer antigen *** underwent bilateral adnexectomy and tumor *** right ovary had been replaced by a multinodular mass that was 8.5 cm×4.5 cm×3.5 cm in *** addition,there was a 24 cm×15 cm×13 cm mesenteric mass,which was also multinodular,with local invasion of the intestinal serosa and underlying *** the microscope,the tumors in different places exhibited two different patterns,thus presenting great challenges to diagnosis and *** pathological assessment eliminated all differential diagnoses in favor of metastatic LGESS derived from a 20-year-old primary tumor initially misdiagnosed as *** LGESS morphology varies according to tumor *** diagnosis is critical for appropriate treatment and improved prognosis and patient care.

关键词： Gastrointestinal stromal tumor Low-grade endometrial stromal sarcoma Mesentery Ovary Tumor Case report

Experimental and Numerical Studies on Sea Sand Concrete Filled Stainless Steel Tube with Inner FRP Tube Subjected to Axial Compression

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China Ocean Engineering 2023年第2期37卷 272-287页

作者： ZENG lan yu Wen-lan MO Zi-yong HUANG Shi-qing yuAN Hong MOE Key Laboratory of Disaster Forecast and Control in Engineering School of Mechanics and Construction EngineeringJinan UniversityGuangzhou 510632China Construction Engineering Quality and Safety Supervision Station of Renshou County Meishan 620500China School of Architectural Engineering Guangzhou Institute of Science and TechnologyGuangzhou 510540China

Since fibre-reinforced polymer(FRP) and stainless steel(SS) offer advantages of corrosion resistance and hybrid confinement, this study proposed a new type of composite column: sea sand concrete(SSC)-filled SS tubular columns with an inner FRP tube(CFSTFs) to help exploit abundant ocean resources in marine engineering. To study compressive behaviours of these novel members, eight CFSTFs and two SSC-filled SS tubular columns(CFSTs)were tested under axial compression. Their axial load-displacement curves, axial load-strain curves in SS or FRP tubes were obtained, and influences of key test parameters(the existence of glass FRP(GFRP) tubes, steel tube shapes, and GFRP tube thicknesses and diameters) were discussed. Further, specimen failure mechanism was analyzed employing the finite element method using ABAQUS software. Test results confirmed the excellent ductility and load-bearing capacity of CFSTFs. The existence of GFRP tubes inside can postpone SS tube buckling, and the content of inner FRP tubes, particularly increasing diameters, was found to improve compressive behaviours. GFRP contents helped develop the second elastic-plastic stage of the load-displacement curves. Furthermore, the bearing capacity of CFSTFs with a circular cross-section was approximately 26% higher than that with a square cross-section, and this difference narrowed with the increase in GFRP ratios.

关键词： sea-sand concrete(SSC) confined concrete column fibre-reinforced polymer(FRP)tube stainless steel tube axial compression

Topological Entropy of a Class of Subshifts of Finite Type

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Acta Mathematica Sinica,English Series 2018年第12期34卷 1765-1777页

作者： Jin Zhong XU lan yu WANG Key Laboratory of Space Utilization Technology and Engineering Center for Space Utilization Chinese Academy of Sciences Beijing 100094 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 P. R. China

In this paper, we construct a special class of subshifts of finite type. By studying the spectral radius of the transfer matrix associated with the subshift of finite type, we obtain an estimation of its topological entropy. Interestingly, we find that the topological entropy of this class of subshifts of finite type converges monotonically to log（n ＋ 1）（a constant only depends on the structure of the transfer matrices） as the increasing of the order of the transfer matrices.

关键词： Symbolic dynamical system subshift of finite type topological entropy transfer matrix,Toeplitz matrix

On the Period Variation of the W UMa-type Contact Binary V502 Ophiuchi

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Chinese Journal of Astronomy and Astrophysics 2006年第3期6卷 331-337页

作者： Qing-Yao Liu yu-lan Yang National Astronomical Observatories/yunnan Observatory Chinese Academy of Sciences Kunming 650011

The variation in the orbital period of the W UMa type contact binary V502 Oph is analyzed. The orbital period exhibits a wavelike variation with a periodicity of 23.0 years and an amplitude of AP = 1.24 ×10^-5 days superimposed on secular decrease of dP/dt = 1.68× 10^-7 day per year. The long-term decrease may be accompanied by the contraction of the secondary at a rate of 83 m per year and a mass transfer rate from the primary to the secondary of 4.28×10^-8M· per year. The short-term oscillation may be explained by the presence of a third component. Orbital elements of the third body and its possible mass are presented.

关键词： stars: contact binary - period change - star: individual: V502 Oph

Notes on Piecewise-Koszul Algebras

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Acta Mathematica Sinica,English Series 2011年第5期27卷 943-952页

作者： Jia Feng LV Xiao lan yu Institute of Mathematics Zhejiang Normal University Jinhua 321004 P. R. China Department of Mathematics Zhejiang University Hangzhou 310027 P. R. China

The relationships between piecewise-Koszul algebras and other ＂Koszul-type＂ algebras are discussed. The Yoneda-Ext algebra and the dual algebra of a piecewise-Koszul algebra are studied, and a sufficient condition for the dual algebra A^1 to be piecewise-Koszul is given. Finally, by studying the trivial extension algebras of the path algebras of Dynkin quivers in bipartite orientation, we give explicit constructions for piecewise-Koszul algebras with arbitrary ＂period＂ and piecewise-Koszul algebras with arbitrary ＂jump-degree＂.

关键词： Piecewise-Koszul algebras almost Koszul algebras,/C:-algebras Dynkin quivers

Synthesis of Analogs of Anacardosidefrom Sem ecarpusAnacardium

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Chemical Research in Chinese Universities 1999年第3期15卷 294-299页

作者： WANG yu-lan CAI Meng-shen Institute of Chemical Metallurgy Chinese Academy of SciencesBeijing 100080P.R.China School of Pharmaceutical Sciences Beijing Medical UniversityBeijing 100083P.R.China

Orthonormal Bases Associated with Multi-knot Piecewise Linear Function Sequences on[0,1)~n

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Acta Mathematica Sinica,English Series 2009年第11期25卷 1835-1848页

作者： yu lan LI Dun Yan YAN Shanghai High School No. 989 Shanghai 200231 P. R. China School of Information Science and Engineering Graduate University of Chinese Academy of Sciences Beijing 100190 P. R. China

We investigate two classes of orthonormal bases for L^2（[0, 1）^n）. The exponential parts of those bases are multi-knot piecewise linear functions which are called spectral sequences. We characterize the multi-knot piecewise linear spectral sequences and give an application of the first class of piecewise linear spectral sequences.

关键词： spectral sequences orthonormal basis Fourier basis

A Possible Explanation of the O'Connell Effect in Close Binary Stars

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Chinese Journal of Astronomy and Astrophysics 2003年第2期3卷 142-150页

作者： Qing-Yao Liu yu-lan Yang NationalAstronomicalObservatories YunnanObservatoryChineseAcademyofSciencesKunming650011Bily UnitedLaboratoryofOpticalAstronomy ChineseAcademyofSciences

A theoretical model for explaining the O'Connell effect of close binary stars is given based on the hypothesis that the circumstellar material of a binary system is captured by its components. The results inferred from the model suggest that late-type and/or short-period binaries can easily produce obvious O'Connell effect and that the occurrence of O'Connell effect has no relation with the type of binaries. These conclusions are in agreement with the observed results. The observed O'Connell effects of six binary systems are examined by the model. For three W-subtype W UMa binaries (YY Eri, BX Per and SW Lac), the densities of the materials captured by the two components are assumed to be equal, and the calculated O'Connell effect is found to be almost equal to the observed effect. For three A-subtype W UMa systems (CN And, FG Hya and AU Ser), the two densities are assumed to be different, and are calculated separately. The calculated O'Connell effect turns out to agree better with the observed effect than that was formerly obtained.

关键词： binaries: close - star: W UMa - circumstellar matter