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Poisson Stable Solutions for Stochastic Differential Equations with lévy Noise

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Acta Mathematica Sinica,English Series 2022年第1期38卷 22-54页

作者： xin l.u Zhen xin lI School of Mathematical Sciences Dalian University of TechnologyDalian 116024P.R.China

In this paper,we use a unified framework to study Poisson stable(including stationary,periodic,quasi-periodic,almost periodic,almost automorphic,Birkhoff recurrent,almost recurrent in the sense of Bebutov,levitan almost periodic,pseudo-periodic,pseudo-recurrent and Poisson stable)solutions for semilinear stochastic differential equations driven by infinite dimensional l′evy noise with large *** suitable conditions on drift,diffusion and jump coefficients,we prove that there exist solutions which inherit the Poisson stability of *** we show that these solutions are globally asymptotically stable in square-mean ***,we il.ustrate our theoretical results by several examples.

关键词： Stochastic differential equation lévy noise periodic solution quasi-periodic solution almost periodic solution levitan almost periodic solution almost automorphic solution Birkhoff recurrent solution Poisson stable solution asymptotic stability

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青稞分蘖角度的QTl定位

作物学报 2025年第1期51卷 260-272页

作者：杨景发余鑫莲姚有华姚晓华王蕾吴昆仑李新青海大学农林科学院/青海省作物分子育种重点实验室/青海省青稞遗传育种重点实验室/青藏高原种质资源研究与利用实验室/青海大学省部共建三江源生态与高原农牧业国家重点实验室青海西宁810016

分蘖角度是青稞株型的主要构成因素,在提高青稞产量与抗倒伏性中发挥着极为重要的作用。为解析青稞分蘖角度的遗传机制,本研究以青稞品种‘达章紫’(株型松散)和‘昆仑10号’(株型紧凑)为亲本构建的RIl群体为材料,基于高密度遗传图谱,... 详细信息

分蘖角度是青稞株型的主要构成因素,在提高青稞产量与抗倒伏性中发挥着极为重要的作用。为解析青稞分蘖角度的遗传机制,本研究以青稞品种‘达章紫’(株型松散)和‘昆仑10号’(株型紧凑)为亲本构建的RIl群体为材料,基于高密度遗传图谱,在多环境中进行青稞分蘖角度的QTl定位,并利用RIl群体衍生的剩余杂合系,对鉴定到的主效QTlqTA7H-1进行精细定位。在青稞7条染色体上共检测到9个控制分蘖角度的QTl,解释表型变异为6.41%~33.57%,其中,qTA3H-1和qTA7H-1为多环境共检测的主效QTl,平均加性效应分别为5.42°(增效)和-3.87°(减效);在减效QTl qTA7H-1初定位区间筛选到4个剩余杂合体,自交衍生F8:9近等基因系,在置信区间内加密设计14对分子标记对RHl群体极端单株进行检测,利用获得的5种交换类型单株,将qTA7H-1进一步界定在PC08(32,252,397)与PA10(41,790,765)约9.54Mb的物理区间内。本研究初步揭示调控青稞分蘖角度的遗传因子,为开展分蘖角度性状的遗传改良与分子设计育种奠定了基础。

关键词：青稞分蘖角度 QTl定位主效位点

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Dietary lactiplantibacil.us plantarum KX041 attenuates colitis-associated tumorigenesis and modulates gut microbiota

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Food Science and Human Wellness 2023年第5期12卷 1626-1636页

作者： Tao Wang Panpan Wang li Yin Xiuchao Wang Yuanyuan Shan Yanglei Yi Yuan Zhou Bianfang l.u xin Wang xin lü College of Food Science and Engineering Northwest Agriculture and Forestry UniversityYangling 712100China Faculty of Food Science and Engineering Kunming University of Science and TechnologyKunming 650500China

Colorectal cancer(CRC)is one of the most common cancers and supplementation of probiotics may be a promising intervention method. The present study aimed to investigate the anti-CRC effects of lactiplantibacil.us plantarum KX041 on a CRC mouse model. The CRC mice were induced by 10 mg/kg azoxymethane and 2% dextran sulfate sodium. l. plantarum KX041 was orally administrated once daily(1 × 10^(9) CFu/mouse). Results showed that l. plantarum KX041 could significantly inhibit inflammation, tumor formation, and induce tumor cells apoptosis. Moreover, this probiotic could ameliorate the damage of intestinal barrier by recovering tight junction protein expression(like Occludin, Cl.udin-1, and ZO-1)and preventing goblet cell loss. Furthermore, the oxidative stress was alleviated by increasing the level of antioxidant mediators(like GSH and SOD)and reducing the level of oxidative mediators(like MDA and MPO). In addition, treatment with l. plantarum KX041 could directly regulate gut microbiota, thereby increasing the abundance of beneficial bacteria(like SCFAs-producing bacteria, Akkermansia)and decreasing the abundance of harmful bacteria(like pro-inflammatory bacteria, Parasutterella), which in turn raised SCFAs levels and lowered lPS levels. In conclusion, l. plantarum KX041 could effectively ameliorate CRC via reshaping intestinal microenvironment, alleviating inflammation, maintaining intestinal permeability, and attenuating oxidative stress.

关键词： lactiplantibacil.us plantarum KX041 Colorectal cancer Gut microbiota Inflammation Intestinal permeability

An Elementary Study of the unearthed Mathematics Book, Suanshu Shu

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Chinese Annals of History of Science and Technology 2017年第1期1卷 24-58页

作者： Zou Dahai lüxin Institute for the History of Natural Sciences CASBeijing 100190China 不详

The transcription of the Suanshu Shu算數書(a bamboo book of mathematics)in simplified Chinese characters offers a new opportunity to explore the history of Chinese mathematics in ancient *** paper analyzes the style and structure of the Suanshu Shu and makes comparisons with the Nine Chapters on Mathematical Procedures and a number of other texts in various social *** will be shown that the Suanshu Shu was compiled from at least two sources,and that no direct textual interplay exists between the Suanshu Shu and the Nine Chapters,although both share the same origins in the Pre-Qin period when the major mathematical methods in the Nine Chapters came into *** will also be shown that the Suanshu Shu was accomplished with the methods used in certain mathematical books in the Pre-Qin period or their results,which later led to the Nine Chapters,and by accommodating the actual conditions of the lower government *** Suanshu Shu is significant for establishing the evolution of algorithmic mathematics from the Warring States period to the Han dynasty.

关键词： Suanshu Shu Nine Chapters on Mathematical Procedures mathematics from the Pre-Qin period to the Han dynasty

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GPS无线电掩星技术反演大气参数方法对比

地球物理学报 2007年第2期50卷 346-353页

作者：王鑫吕达仁中国科学院大气物理研究所北京100029

无线电掩星技术是一种探测地球大气的崭新途径.菲涅耳衍射反演是GPS掩星技术中基于物理光学原理的新的反演方法.文章研究了菲涅耳及几何光学方法的反演原理,利用GPS/MET数据分别反演得到了大气折射率及温度廓线.对比分析了菲涅耳衍射方... 详细信息

无线电掩星技术是一种探测地球大气的崭新途径.菲涅耳衍射反演是GPS掩星技术中基于物理光学原理的新的反演方法.文章研究了菲涅耳及几何光学方法的反演原理,利用GPS/MET数据分别反演得到了大气折射率及温度廓线.对比分析了菲涅耳衍射方法在10Hz、25Hz和50Hz三个采样频率下不同的反演结果,通过与几何光学反演结果及相应探空数据的对比分析,表明菲涅耳衍射反演得到的结果在对流层,特别是水汽含量丰富的区域中更为准确可靠.

关键词：无线电掩星菲涅耳衍射大气廓线反演

uncovering the internal structure of five-fold twinned nanowires through 3D electron diffraction mapping

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Chinese Physics B 2020年第6期29卷 517-531页

作者： xin Fu GRINM Group Corporation limited National Analysis and Testing Center for Nonferrous Metals and Electronic MaterialsBeijing 101400China Guobiao(Beijing)Testing&Certification Co. Ltd.Beijing 101400China China united Test&Certification Co. Ltd.Beijing 101400China General Research Institute for Nonferrous Metals Beijing 100088China

Five-fold twinned nanostructures are intrinsically strained or relaxed by extended defects to satisfy the space-filling *** both of metallic and semiconductor five-fold twinned nanostructures show inhomogeneity in their cross-sectional strain distribution,the evident strain concentration at twin boundaries in the semiconductor systems has been found in contrast to the metallic ***,a problem is raised how the chemical bonding characteristics of various five-fold twinned nanosystems affects their strain-relieving defect *** using three-dimensional(3D)electron diffraction mapping methodology,the intrinsic strain and the strain-relieving defects in a pentagonal Ag nanowire and a star-shaped boron carbide nanowire,both of them have basically equal radial twin-plane width about 30 nm,are nondestructively *** non-uniform strain and defect distribution between the five single crystalline segments are found in both of the five-fold twinned *** intensity fine structure analysis for the boron carbide five-fold twinned nanowire indicates the presence of high-density of planar defects which are responsible for the accommodation of the intrinsic angular ***,for the Ag five-fold twinned nanowire,the star-disclination strain field is still present,although is partially relieved by the formation of localized stacking fault layers accompanied by partial *** analysis suggests that the variety in the strain-relaxation ways for the two types of five-fold twinned nanowires could be ascribed to the large difference in shear modulus between the soft noble metal Ag and the superhard covalent compound boron carbide.

关键词： five-fold twinnining elastic strain structural relaxation electron diffraction mapping

list Edge Coloring of Outer-1-planar Graphs

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Acta Mathematicae Applicatae Sinica 2020年第3期36卷 737-752页

作者： xin ZHANG School of Mathematics and Statistics Xidian UniversityXi'an 710071China

A graph is outer-1-planar if it can be drawn in the plane so that all vertices are on the outer face and each edge is crossed at most *** is known that the list edge chromatic numberχ′l(G)of any outer-1-planar graph G with maximum degreeΔ(G)≥5 is exactly its maximum *** this paper,we proveχ′l(G)=Δ(G)for outer-1-planar graphs G withΔ(G)=4 and with the crossing distance being at least 3.

关键词： outerplanar graph outer-1-planar graph crossing distance list edge coloring

Plastic deformation of a Zr-based bulk metallic glass fabricated by selective laser melting

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Journal of Materials Science & Technology 2021年第1期60卷 139-146页

作者： l.Deng K.Kosiba R.limbach l.Wondraczek u.Kühn S.Pauly IFW Dresden Institute for Complex MaterialsHelmholtzstraße 20D-01069DresdenGermany Otto Schott Institute of Materials Research University of JenaFraunhoferstraße 6D-07743JenaGermany university of Applied Sciences Aschaffenburg Würzburger Straße 45D-63743AschaffenburgGermany

Fully amorphous Zr_(52.5)Cu_(17.9)Ni_(14.6)Al_(10)Ti_(5) bulk metallic glass(BMG) samples with a relative density exceeding 98% were fabricated via selective laser melting(SlM).High fracture stresses of around1700 MPa and a reproducible plastic strain of about 0.5% were obtained for cylindrical SlM *** analysis of the observed serrations during compressive loading implies that the shear-band dynamics in the additively manufactured samples distinctly differ from those of the as-cast *** phenomenon appears to originate from the presence of uniformly dispersed spherical pores as well as from the more pronounced heterogeneity of the glass itself as revealed by instrumented *** these heterogeneities,the shear bands are straight and form in the plane of maximum shear *** manufacturing,hence,might not only allow for producing large BMG samples with complex geometries but also for manipulating their deformation behaviour through tailoring porosity and structural heterogeneity.

关键词： Powder bed fusion Selective laser melting Bulk metallic glass Serrated flow Heterogeneity

Xiaokeping-containing serum suppresses high-glucose-induced proliferation of mesangial cells involved in the regulation of cell cycle progression and the p38 mitogen-activated protein kinase pathway

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Journal of Traditional Chinese Medicine 2021年第1期41卷 44-50页

作者： xin Chuanwei XIA Zhongni YANG Bo lu lisong Department of Pharmacy Zhejiang Academy of Traditional Chinese MedicineTongde Hospital of Zhejiang ProvinceHangzhou 310012China

OBJECTIVE: To investigate the efficacy of Xiaokeping(XKP)-containing serum on the proliferation of high-glucose-induced mesangial cells(MCs)and the potential.underlying ***: XKP-containing serum was prepared by the intragastric administration of XKP in ***-1 cells were cul.ured with normal glucose(NC group), high glucose(HG group), and high glucose with different XKP concentrations. Cell proliferation was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazol.um bromide assay,and the cell cycle distribution was detected by flow cytometry. The expression of p38 mitogen-activated protein kinase(p38 MAPK) pathway components in MCs was detected by Western blotting and quantitative real-time polymerase chain ***: The MC proliferation level in the high-glucose group was significantly higher than that in the normal control group, and XKP suppressed the HG-induced proliferation of MCs dose dependently. Moreover, flow cytometry revealed that XKP blocked cell cycle progression by inducing cell cycle arrest in G1 phase and inhibiting S phase entry. XKP down-regulated the protein and m RNA expression of p38 MAPK in MCs(P luSION: The present study demonstrated that XKP-containing serum inhibits high-glucoseinduced proliferation of MCs by causing cell cycle arrest at G1 phase and inhibiting S phase entry. The underlying mechanism involves the down-regulation of the p38 MAPK signaling pathway, providing a theoretical basis for the use of XKP to treat diabetic kidney disease.

关键词： Mesangial cells cell proliferation cell cycle p38 mitogen-activated protein kinase Xiaokeping mixture