检索结果-南通市图书馆

Heterogeneity of mature oligodendrocytes in the central nervous system

Neural Regeneration Research 2025年第5期20卷 1336-1349页

作者： Chao Weng Adam M.R.Groh Moein Yaqubi qiao-ling Cui Jo Anne Stratton G.R.Wayne Moore Jack P.Antel Neuroimmunology Unit Montreal Neurological Institute-HospitalDepartment of Neurology and NeurosurgeryMcGill UniversityMontrealQCCanada Department of Neurology Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

Mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous *** evidence has challenged the classical view of the functionally static mature oligodendrocyte and revealed a gamut of dynamic functions such as the ability to modulate neuronal circuitry and provide metabolic support to *** the recognition of potential heterogeneity in mature oligodendrocyte function,a comprehensive summary of mature oligodendrocyte diversity is *** delve into early 20th-century studies by Robertson and Río-Hortega that laid the foundation for the modern identification of regional and morphological heterogeneity in mature ***,recent morphologic and functional studies call into question the long-assumed homogeneity of mature oligodendrocyte function through the identification of distinct subtypes with varying myelination ***,modern molecular investigations,employing techniques such as single cell/nucleus RNA sequencing,consistently unveil at least six mature oligodendrocyte subpopulations in the human central nervous system that are highly transcriptomically diverse and vary with central nervous system *** and disease related mature oligodendrocyte variation denotes the impact of pathological conditions such as multiple sclerosis,Alzheimer's disease,and psychiatric ***,caution is warranted when subclassifying mature oligodendrocytes because of the simplification needed to make conclusions about cell identity from temporally confined *** studies leveraging advanced techniques like spatial transcriptomics and single-cell proteomics promise a more nuanced understanding of mature oligodendrocyte *** research avenues that precisely evaluate mature oligodendrocyte heterogeneity with care to understand the mitigating influence of species,sex,central nervous system region,age,and disease,

关键词： aging central nervous system diseases electron microscopy heterogeneity immunohistochemistry myelin sheath natural history neuroglia oligodendroglia single-cell gene expression analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Weierstrass Type Representation of Willmore Surfaces in S^n

引用

Acta Mathematica Sinica,English Series 2004年第6期20卷 1029-1046页

作者： qiao ling XIA Yi Bing SHEN Department of Mathematics Zhejiang University

In this paper,we reformulate the Euler-Lagrange equations of Willmore surfaces in S^n as the flatness of a family of certain loop algebra-valued *** we can give the Weierstrass type representation of conformal Willmore *** also discuss the relations between conformal Willmore surfaces in S^n and minimal surfaces in constant curvature spaces S^n,R^n,H^n,and prove that some special Willmore surfaces can be derived from minimal surfaces in S^n,R^n,H^n.

关键词： Willmore surfaces Extended lift of a conformal Willmore immersion Loop group Weierstrass type representation Minimal surface

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Morita Contexts and Galois Theory for Weak Hopf Comodulelike Algebras

引用

Acta Mathematica Sinica,English Series 2011年第4期27卷 757-772页

作者： qiao ling GUO Shuan Hong WANG College of Mathematics and Information Engineering Jiaxing University Jiaxing 314001 P. R. China Department of Mathematics Southeast University Nanjing 210096 P. R. China

We investigate the Morita context and graded cases for weak group corings and derive some equivalent conditions for p to be surjective. Furthermore, we develop Galois theory for weak group corings. As an application, ... 详细信息

关键词： Weak group corings graded Mortira contexts weak Hopf comodulelike algebras

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Simulation of Far-Field Superresolution Fluorescence Imaging with Two-Color One-Photon Excitation of Reversible Photoactivatable Protein

引用

Chinese Physics Letters 2011年第5期28卷 136-139页

作者： WANG Chen qiao ling-ling MAO Zheng-Le State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800

We propose to achieve far-field super-resolution imaging by using offset two-color one-photon(2C1P)excitation of reversible photoactivatable fluorescence *** to the distinctive photoswitching performance of the proteins,such as dronpa,the fluorescence emission will only come from the overlapped region of activation beam and excitation *** analysis solution of rate equation shows that the resolution of offset 2C1P microscope is"engineered"by laser power of excitation and activation beams and the power ratio between *** lateral and transverse resolution is theoretically demonstrated compared with conventional fluorescence scanning microscopy.

关键词： excitation activation resolution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于k-center聚类和最近邻中心的公平数据汇总

引用

西华师范大学学报（自然科学版） 2025年第1期46卷 95-103页

作者：何艳黄巧玲郑伯川西华师范大学数学与信息学院四川南充637009 西华师范大学计算机学院四川南充637009

公平数据汇总是指从每种数据类别中选择有代表性的子集,且满足公平性要求。在大数据时代,每种类别的数据都是海量的,因此公平数据汇总研究具有非常重要的现实意义。为了使公平数据汇总的数据点更具有代表性,提出了基于k-center聚类和最... 详细信息

公平数据汇总是指从每种数据类别中选择有代表性的子集,且满足公平性要求。在大数据时代,每种类别的数据都是海量的,因此公平数据汇总研究具有非常重要的现实意义。为了使公平数据汇总的数据点更具有代表性,提出了基于k-center聚类和最近邻中心的公平数据汇总算法。算法主要包括2个基本步骤:(1)通过k-center聚类,将k个簇中心作为当前汇总结果;(2)选择满足公平约束的原簇中心的最近邻点作为新簇中心。由于更新簇中心时选择的是原簇中心的最近邻点,因此相对随机选择的数据点,最近邻点更具有代表性,是除原始簇中心外的次优代表点。同时,寻找最近邻点作为新的簇中心能最大限度减少公平代价。在2个模拟数据集和6个UCI真实数据集上的对比实验结果表明,所提出的算法在近似因子和公平代价方面都优于对比算法,说明所提出的算法获得的数据汇总更具有代表性。

关键词：最近邻点 k-center聚类数据汇总公平约束

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Oxidation resistance 1 （OXR1） participates in silkworm defense against bacterial infection through the JNK pathway

引用

Insect Science 2017年第1期24卷 17-26页

作者： Li-De Su qiao-ling Zhang Zhiqiang Lu Department of Entomology College of Plant Protection Ministry of Education Northwest A &F University Yangling Shaanxi 712100 China Key Laboratory of Plant Protection Resources and Pest Management Ministry of Education Northwest A &F University Yangling Shaanxi 712100 China

Bacterial infection causes enhanced reactive oxygen species （ROS） levels in insects. Oxidation resistance 1 （OXR1） plays an antioxidant role in eukaryotic organisms, including insects. In this report, we demonstrated that Pseudomonas aeruginosa and Staphylococcus aureus infection and hydrogen peroxide （H2O2） injection induced the expression of specific transcriptional isoforms of OXR1 in larval silkworms. We further showed that a Jun kinase （JNK） pathway inhibitor, SP600125, down-regulated expression of OXRI during infection, leading to elevated H2O2 levels in the hemolymph, resulting in lower viability of the injected bacteria inside the silkworm larvae. Our study suggests that OXR1 participates in protecting larval silkworms from oxidative stress and bacterial infection through the JNK pathway.

关键词： Bombyx mori infection Jun kinase pathway oxidation resistance 1 reactive oxygen species

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neighbor Sum Distinguishing Total Colorings of Triangle Free Planar Graphs

引用

Acta Mathematica Sinica,English Series 2015年第2期31卷 216-224页

作者： Ji Hui WANG qiao ling MA Xue HAN School of Mathematical Sciences University of Ji'nan

A total k-coloring c of a graph G is a proper total coloring c of G using colors of the set [k] = {1, 2,...,k}. Let f（u） denote the sum of the color on a vertex u and colors on all the edges incident to u. A k-neighbor sum distinguishing total coloring of G is a total k-coloring of G such that for each edge uv ∈ E（G）, f（u） ≠ f（v）. By X＂nsd（G）, we denote the smallest value k in such a coloring of G. Pilgniak and Wozniak conjectured that X＂nsd（G） ≤ △（G）＋ 3 for any simple graph with maximum degree △（G）. In this paper, by using the famous Combinatorial Nullstellensatz, we prove that the conjecture holds for any triangle free planar graph with maximum degree at least 7.

关键词： Neighbor sum distinguishing total coloring combinatorial Nullstellensatz triangle freeplanar graph

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Agricultural GMO safety administration in China

引用

Journal of Integrative Agriculture 2015年第11期14卷 2157-2165页

作者： KOU Jian-ping TANG qiao-ling ZHANG Xian-fa Biosafety Office of Agricultural GMOs Ministry of Agriculture of China (MOA) Biotechnology Research Institute Chinese Academy of Agricultural Sciences

Given the public concern over the safety of genetically modified （GM） technology and products, the article elaborated the safety regulatory and administration on agricultural GMOs in China. China has made a set of laws and regulations of GMO safety management and confirmed competent authorities with clear-cut responsibilities. According to the laws and regulations, GMO products before entering markets have to pass through safety evaluation, get production and processing permission and be labeled correctly. For the importation of GM products, China has set up an import approval system. In addition, China has established technical supportive systems, including safety evaluation specifications, trial specifications and criteria specifications. The existing regulatory system supervises and regulates all activities and work related to agri- cultural GMOs in China.

关键词： GMOs bio-technology safety evaluation labeling information disclosure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The north-south asymmetry of solar filaments separately at low and high latitudes in solar cycle 23

引用

Research in Astronomy and Astrophysics 2015年第1期15卷 77-84页

作者： De-Fang Kong Zhi-Ning Qu qiao-ling Guo Yunnan Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences College of Mathematics Physics and Information Engineering Jiaxing University

We present the results of a study on the north-south asymmetry of solar filaments at low（〈50°） and high（〉60°） latitudes using daily filament numbers from January 1998 to November 2008（solar cycle 23）. It is found that the northern hemisphere is dominant at low latitudes for cycle 23. However, a similar asymmetry does not occur for solar filaments at high latitudes. The present study indicates that the hemispheric asymmetry of solar filaments at high latitudes in a cycle appears to have little connection with that at low latitudes. Our results support that the observed magnetic fields at high latitudes include two components： one comes from the emergence of the magnetic fields from the solar interior and the other comes from the drift of the magnetic activity at low latitudes.

关键词： Sun: activity Sun: filaments,prominences methods: data analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on the flow structure in curved open channels with suspended vegetation using multi relaxation time lattice Boltzmann method

引用

Journal of Hydrodynamics 2024年第2期36卷 300-315页

作者： He-fang Jing qiao-ling Zhang Wei-hong Wang Zong-ning Zhang School of Mathematics and Information Science North Minzu UniversityYinchuan750021China School of Civil Engineering North Minzu UniversityYinchuan750021China Department of Basic Courses Zhengzhou University of Science and TechnologyZhengzhou450064China

Suspended vegetation in rivers,lakes,reservoirs and canals can change flow structure,which will in turn affect the sediment transport and cause the variation of water ecological *** order to study the characteristics of bend flow through suspended vegetation,three-dimensional numerical simulations are carried out by using the multi-relaxation-time lattice Boltzmann method(MRT-LBM).The drag force induced by vegetation is added in the velocity correction in the equilibrium distribution and a hybrid format combined bounce and specular reflection scheme is applied in the solid-fluid *** the validation of this model,six cases are designed to conduct the numerical simulations according to the root depth and the arrangement of *** simulated results show that the suspended vegetation can redistribute the flow structure in curved open *** the arrangement of suspended vegetation,the main flow moves to the side without vegetation,and the distribution of velocity tends to be balanced when vegetation is arranged on the entire cross section,the range of circulating current is reduced from the whole cross section to the local position without vegetation,however,the circulating current can still exist in the curve where the suspended vegetation enters less than half of the water *** addition,it can also be concluded that the suspended vegetation can affect the lateral gradient of flow velocity,and the bed shear stress in the curved channel.

关键词： Multi-relaxation-time lattice Boltzmann method(MRT-LBM) suspended vegetation curved open channel circulating current bed shearstress

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：