检索结果-南通市图书馆

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng Gao Yu-gui Peng Peng Wu Zong-Lin Li Xue-Feng zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

湖南衡南县紫色土土壤动物研究

土壤通报 2004年第5期35卷 627-630页

作者：朱巽袁金荣林仲桂朱雅安湖南环境生物职业技术学院湖南衡阳421005

通过对衡南县紫色土5种生境中的土壤动物进行调查研究,共获得土壤动物1657只,隶属于4门9纲37目,其中优势类群2类,常见类群11类。探讨了5种生境中土壤动物群落结构特征,并进行了多样性、均匀性及相似性分析。

关键词：土壤动物多样性紫色土衡南

基于资源观的虚拟企业项目治理中契约关系研究

在线全文

学校读者我要写书评

暂无评论

山东大学学报（哲学社会科学版） 2009年第4期 61-67页

作者：丁荣贵吕冠珠孙涛山东大学管理学院

随着虚拟企业作为一种新的资源配置方式逐渐被广泛的接受和采用,虚拟企业的治理问题也成为提高虚拟企业成功率的关键。由于虚拟企业一般是基于合作项目的,因此可从虚拟企业项目的治理入手去解决此问题。在分析项目治理思路的基础上,基... 详细信息

随着虚拟企业作为一种新的资源配置方式逐渐被广泛的接受和采用,虚拟企业的治理问题也成为提高虚拟企业成功率的关键。由于虚拟企业一般是基于合作项目的,因此可从虚拟企业项目的治理入手去解决此问题。在分析项目治理思路的基础上,基于资源观理论对虚拟企业中成员企业的需求状况进行了分析,对拥有不同类型资源的企业在确定项目合作伙伴时可能会选择的契约关系类型进行了研究,提出了分析虚拟企业项目治理中成员间关系的新思路。

关键词：项目治理契约资源观虚拟企业

双稳随机共振系统信号调制噪声效应用于弱信号检测

在线全文

学校读者我要写书评

暂无评论

数据采集与处理 2004年第2期19卷 180-184页

作者：肖方红闫桂荣朱长春西安交通大学建筑工程与力学学院西安710049 中国工程物理研究院绵阳610003

通过对双稳系统随机共振模型的数值分析 ,得出在双稳系统输出信号中 ,有一个正弦信号成分和一个表现为维纳过程的噪声成分分别与输入的正弦信号和白噪声相对应。通过选择合适的系统参数 ,可以减小系统输出中信号和噪声之间的耦合效应。... 详细信息

通过对双稳系统随机共振模型的数值分析 ,得出在双稳系统输出信号中 ,有一个正弦信号成分和一个表现为维纳过程的噪声成分分别与输入的正弦信号和白噪声相对应。通过选择合适的系统参数 ,可以减小系统输出中信号和噪声之间的耦合效应。该系统可以大大抑制噪声 ,并在双稳系统中产生信号调制噪声效应。然后对双稳系统的输出信号作功率谱分析。不但可以辨识出淹没在白噪声中的微弱正弦信号的频率 ,还可以较精确地估算出微弱正弦信号的幅值。数值仿真表明 ,双稳系统的信号调制噪声效应可用于多个微弱正弦信号的检测。

关键词：弱信号检测双稳随机共振系统信号调制噪声效应

新型恶唑烷酮化合物对耐药性结核分枝杆菌抗菌作用的探讨

在线全文

学校读者我要写书评

暂无评论

中国现代医学杂志 2018年第27期28卷 35-38页

作者：化莉赵亚静朱贵荣北京大学国际医院呼吸与危重症医学科北京102206 解放军第309医院呼吸科北京100091

目的测定新型恶唑烷酮化合物对临床分离的广泛耐药结核分枝杆菌的抗菌活性。方法采用7H10培养基进行体外菌落培养及最小抑菌浓度测定。采用BALB/c小鼠攻毒结核分枝杆菌模型测定化合物的抗菌活性。结果新型恶唑烷酮化合物sy142在体外检... 详细信息

目的测定新型恶唑烷酮化合物对临床分离的广泛耐药结核分枝杆菌的抗菌活性。方法采用7H10培养基进行体外菌落培养及最小抑菌浓度测定。采用BALB/c小鼠攻毒结核分枝杆菌模型测定化合物的抗菌活性。结果新型恶唑烷酮化合物sy142在体外检测和动物模型中的抗结核活性均优于linezolid,sy144与linezolid活性相当。Sy142与sy144对多重耐药结核分枝杆菌和广泛耐药结核分枝杆菌具有强效的抗菌作用。结论 sy142和sy144抗结核活性强,可作为新型恶唑烷酮抗菌剂研发的先导化合物。

关键词：结核分枝杆菌广泛耐药恶唑烷酮抗菌活性

Intestinal glucagon-like peptide-1:A new regulator of impaired counterregulatory responses to hypoglycemia in type 1 diabetes mellitus

在线全文

学校读者我要写书评

暂无评论

World Journal of Diabetes 2025年第1期16卷 217-221页

作者： Le-rong Liu Yuan-Yuan Luo Pei-zhu Su Cong Zhang Zhao-Tao Li Department of Endocrinology and Metabolism Nanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Department of Endocrinology Chongqing University Three Gorges HospitalChongqing 404100China Chongqing Municipality Clinical Research Center for Endocrinology and Metabolic Diseases Chongqing University Three Gorges HospitalChongqing 404100China Department of Endocrinology The Second Affiliated HospitalChongqing Medical UniversityChongqing 400013China Department of Gastroenterology The First People's Hospital of FoshanFoshan 528000Guangdong ProvinceChina

In this article,we review the study by Jin et al,which examined the role of intestinal glucagon-like peptide-1(GLP-1)in counterregulatory responses to hypoglycemia in patients with type 1 diabetes mellitus(T1DM).With the global rise of T1DM,there is an increased burden on society and healthcare *** to insulin therapy and islet dysfunction,T1DM patients are highly vulnerable to severe hypoglycemia,a leading cause of *** healthy individuals,counterregulatory mechanisms restore blood glucose during hypoglycemia,but repeated episodes impair these *** et al demonstrated that overexpression of GLP-1 attenuates the sympathetic-adrenal reflex and disrupts the secretion of counterregulatory hormones such as glucagon during hypoglycemia,leading to counterregulatory *** findings highlight the critical role of GLP-1 in the impaired counterregulatory response to hypoglycemia in T1DM patients and provide new insights into the potential application of GLP-1-related therapies in T1DM patients.

关键词： Glucagon-like peptide-1 Impaired counterregulation Type 1 diabetes mellitus Sympathetic-adrenal reflex Glucagon

Correlation between gut microbiota and tumor immune microenvironment:A bibliometric and visualized study

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

World Journal of Clinical Oncology 2025年第2期16卷 110-129页

作者： Zheng-Jun Hu Hui-rong zhu Yong-Jie Jin Pan Liu Xiao-Wei Yu Yu-Ren Zhang Department of Oncology Shanghai Jiading District Hospital of Traditional Chinese MedicineShanghai 200000China Department of Oncology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 200000China School of Chinese Medicine Anhui University of Traditional Chinese MedicineHefei 230000Anhui ProvinceChina

BACKGROUND In recent years,numerous reports have been published regarding the relationship between the gut microbiota and the tumor immune microenvironment(TIME).However,to date,no systematic study has been conducted on the relationship between gut microbiota and the TIME using bibliometric *** To describe the current global research status on the correlation between gut microbiota and the TIME,and to identify the most influential countries,research institutions,researchers,and research hotspots related to this *** We searched for all literature related to gut microbiota and TIME published from January 1,2014,to May 28,2024,in the Web of Science Core Collection *** then conducted a bibliometric analysis and created visual maps of the published literature on countries,institutions,authors,keywords,references,etc.,using CiteSpace(6.2R6),VOSviewer(1.6.20),and bibliometrics(based on R 4.3.2).RESULTS In total,491 documents were included,with a rapid increase in the number of publications starting in *** country with the highest number of publications was China,followed by the United *** has the highest number of citations in *** a centrality perspective,the United States has the highest influence in this *** institutions with the highest number of publications were Shanghai Jiao Tong University and Zhejiang ***,the institution with the most citations was the United States National Cancer *** authors,Professor Giorgio Trinchieri from the National Institutes of Health has the most local impact in this *** most cited author was Fan *** results of journal publications showed that the top three journals with the highest number of published papers were Frontiers in Immunology,Cancers,and Frontiers in *** three most frequently used keywords were gut microbiota,tumor microenvironment,and *** This study systematically elaborates on the research progress re

关键词： Gut microbiota Tumor immune microenvironment Bibliometric CiteSpace VOSviewer R-bibliometrics

Theoretical Study on the Dark Oxidation Reaction Mechanism of Ethers

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

Chinese Journal of Structural Chemistry 2006年第11期25卷 1402-1408页

作者： WANG gui-Xiu zhu rong-Xiu ZHANG Dong-Ju LIU Cheng-Bu School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China

The dark oxidation reactions of ethers including aether, isopropyl ether, phenyl isopropyl ether, and benzyl isopropyl ether have been studied by using density functional theory calculations. The structures of initial Contact charge transfer complexes （CCTCs）, transition states and caged radical intermediates have been located at the B3LYP/6-31G （d） level, The bonding nature of ethers with triplet 02 in CCTCs has been analyzed, and the detailed mechanism of dark oxidation reactions of ether is presented clearly.

关键词： ethers dark oxidation contact charge transfer complex reaction mechanism DFT

The emerging role of nitric oxide in the synaptic dysfunction of vascular dementia

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第2期20卷 402-415页

作者： Xiaorong Zhang Zhiying Chen Yinyi Xiong Qin Zhou Ling-Qiang zhu Dan Liu Department of Pathology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Jiujiang Clinical Precision Medicine Research Center JiujiangJiangxi ProvinceChina Center for Cognitive Science and Transdisciplinary Studies Jiujiang UniversityJiangxi ProvinceChina Department of Neurology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Rehabilitation Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Pathophysiology School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

With an increase in global aging,the number of people affected by cerebrovascular diseases is also increasing,and the incidence of vascular dementia-closely related to cerebrovascular risk-is increasing at an epidemic ***,few therapeutic options exist that can markedly improve the cognitive impairment and prognosis of vascular dementia *** in Alzheimer’s disease and other neurological disorders,synaptic dysfunction is recognized as the main reason for cognitive *** oxide is one of the ubiquitous gaseous cellular messengers involved in multiple physiological and pathological processes of the central nervous ***,nitric oxide has been implicated in regulating synaptic plasticity and plays an important role in the pathogenesis of vascular *** review introduces in detail the emerging role of nitric oxide in physiological and pathological states of vascular dementia and summarizes the diverse effects of nitric oxide on different aspects of synaptic dysfunction,neuroinflammation,oxidative stress,and blood-brain barrier dysfunction that underlie the progress of vascular ***,we propose that targeting the nitric oxide-sGC-cGMP pathway using certain specific approaches may provide a novel therapeutic strategy for vascular dementia.

关键词： endoplasmic reticulum stress endothelial nitric oxide synthase gene therapy nitric oxide NO-sGC-cGMP pathway synaptic dysfunction vascular dementia