检索结果-南通市图书馆

Design of Si3N4 ridge-slot micro-ring resonator and generation of dual-comb based on orthogonally bicolor pumping

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optoelectronics Letters 2024年第11期20卷 647-653页

作者： WEN jin WANG Qian YU huimin WU Zhengwei ZHANG hui School of Science Xi'an Shiyou University Shaanxi Engineering Research Center of Oil and Gas Resource Optical Fiber Detection Shaanxi key Laboratory of Measurement and Control Technology for Oil and Gas wells

A novel high quality-factor（Q） micro-ring resonator（MRR） structure based on the Si3N4ridge-slot waveguide is proposed, and the MRR is pumped by orthogonally polarized bicolor pumping to generate dual-comb.

关键词： A

Fate of organophosphate esters from the Northwestern Pacific to the Southern Ocean:Occurrence,distribution,and fugacity model simulation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第3期137卷 347-357页

作者： Tengda Shi Ruijing Li Jie Fu Chao Hou hui Gao Guanjie Cheng Haibo Zhang Shuaichen jin Liang Kong Guangshui Na College of Marine Technology and Environment Dalian Ocean UniversityDalian 116023China Laboratory for coastal marine eco-environment process and carbon sink of Hainan province/Yazhou Bay Innovation Institute Hainan Tropical Ocean UniversitySanya 572022China National Marine Environmental Monitoring Center Dalian 116023China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China NCS Testing Technology Co. Ltd.Beijing 10081China

Eleven organophosphate esters(OPEs)in the air and seawater were investigated from the northwestern Pacific Ocean to the Southern Ocean during the 2018 Chinese 34th Antarctic Scientific *** concentration of total OPEs ranged from 164.82 to 3501.79 pg/m~3in air and from 4.54 to 70.09 ng/L in *** halogenated OPEs,tri(chloropropyl)phosphate(TCPP)and tri(2-chloroethyl)phosphate(TCEP),were generally more abundant than the non-halogenated OPEs.A levelⅢfugacity model was developed to simulate the transfer and fate of seven OPEs in the air and seawater regions of the central Ross *** model results indicate that OPEs are transferred from the air to the seawater in the central Ross Sea in summer,during which the Ross Sea acts as a final OPE *** and wet deposition dominated the processes involving OPE transfer to *** OPE degradation process was also found to be more pervasive in the atmosphere than in the seawater *** findings highlights the importance of long-range transport of OPEs and their air–seawater interface behavior in the Antarctic.

关键词： Organophosphate esters(OPEs) Long-range transport Fugacity model Antarctic Fate

Theoretical optimization of micropillar arrays for structurally stable bioinspired dry adhesives

在线全文

学校读者我要写书评

暂无评论

Theoretical & Applied Mechanics Letters 2024年第2期14卷 124-129页

作者： ke Ni Zhengzhi Wang Department of Engineering Mechanics School of Civil EngineeringWuhan UniversityWuhan 430072China Wuhan University Shenzhen Research Institute Shenzhen 518108China

Inspired by the excellent adhesion performances of setae structure from organisms,micro/nano-pillar array has become one of the paradigms for adhesive *** micropillar arrays are composed of the resin pillars for adhesion and the substrate with different elastic modulus for *** stress singularity at the bi-material corner between the pillars and the substrate can induce the failure of the micropillar-substrate corner and further hinder the fabrication and application of micropillar arrays,yet the design for the stability of the micropillar array lacks systematical and quantitative *** this work,we develop a semi-analytical method to provide the full expressions for the stress distribution within the bi-material corner combining analytical derivations and numerical *** predictions for the stress within the singularity field can be obtained based on the full expressions of the *** good agreement between the predictions and the FEM results demonstrates the high reliability of our *** adopting the strain energy density factor approach,the stability of the pillar-substrate corner is assessed by predicting the failure at the *** the elastic mismatch between the pillar and substrate given in this paper,the stability can be improved by increasing the ratio of the shear modulus of the substrate to that of the *** study provides accurate predictions for the stress distribution at the bi-material corner and can guide the optimization of material combinations of the pillars and the substrate for more stable bioinspired dry adhesives.

关键词： Micropillar array Stability Bi-material corner Dry adhesive

Neuroprotective Effect and Mechanism of Tanreqing Injection on Ischemic Stroke:Insights from Network Pharmacology and in vivo Experiments

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2024年第8期30卷 713-720页

作者： LI Zhong-hao PU Xiao-qi LI Sha-sha DONG Xiao-ke ZHANG Guo-qiang WANG Yu LIU jin-min Department of Emergency China-Japan Friendship HospitalBeijing100029China Department of Neurology Beijing University of Chinese Medicine Dongfang HospitalBeijing100078China Department of Radiology China-Japan Friendship HospitalBeijing100029China Graduate School Beijing University of Chinese MedicineBeijing100029China

Objective To explore the neuroprotective effects and mechanism of Tanreqing Injection(TRQ)on treating ischemic stroke based on network pharmacology and in vivo experimental *** The chemical compounds of TRQ were retrieved based on published data,with targets retrieved from PubChem,Therapeutic Target Database and *** visualization and analysis were performed using Cytoscape,with protein-protein interaction networks derived from the STRING *** analysis was performed using Kyoto Encyclopedia of Genes Genomes pathway and Gene Ontology *** in vivo experiments,the middle cerebral artery occlusion(MCAO)model was *** volume was determined by 2,3,5-triphenyltetrazolium hydrochloride staining and protein expressions were analyzed by Western *** docking was performed to predict ligand-receptor *** We screened 81 chemical compounds in TRQ and retrieved their therapeutic *** the targets,116 were therapeutic targets for *** enrichment analysis showed that the apelin signaling pathway was a key pathway for ischemic ***,in in vivo experiment we found that administering with intraperitoneal injection of 2.5 mL/kg TRQ every 6 h could significantly reduce the infarct volume of MCAO rats(P<0.05).In addition,protein levels of the apelin receptor(APJ)/phosphatidylinositol 3-kinase(PI3K)/protein kinase B(AKT)pathway were increased by TRQ(P<0.05).In addition,41 chemical compounds in TRQ could bind to *** The neuroprotective effect of TRQ may be related to the APJ/PI3K/AKT signaling ***,further studies are needed to confirm the findings.

关键词： Tanreqing Injection Chinese medicine ischemic stroke middle cerebral artery occlusion quantitative estimate of drug-likeness

On Compatible Hom-Lie Triple Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Mathematical Research with Applications 2024年第5期 633-647页

作者： Wen TENG Fengshan LONG hui ZHANG Jiulin jin School of Mathematics and Statistics Guizhou University of Finance and Economics School of Information Guizhou University of Finance and Economics Postdoctoral Scientific Research Station Shiji Hengtong Technology Co.Ltd School of Science Guiyang University

In this paper, we consider compatible Hom-Lie triple systems. More precisely, compatible Hom-Lie triple systems are characterized as Maurer-Cartan elements in a suitable bidifferential graded Lie algebra. We also define a cohomology theory for compatible Hom-Lie triple systems. As applications of cohomology, we study linear deformations and abelian extensions of compatible Hom-Lie triple systems.

关键词：

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

干燥及饱水状态下裂隙岩石冻融特征研究

岩土力学 2017年第7期38卷 1999-2006页

作者：裴向军蒙明辉袁进科王东坡成都理工大学地质灾害防治与地质环境保护国家重点实验室四川成都610059 四川省华地建设工程有限责任公司四川成都610081

岩体冻融风化作用主要受控于岩性、岩体结构、饱和状态及温变环境等因素。采取新疆寒区4种裂隙岩石进行温度变化下的冻融应变试验,得到了裂隙岩石在饱水及干燥冻融状态下的应变过程,即饱水状态下为8个阶段、干燥状态下为5个阶段;针对饱... 详细信息

岩体冻融风化作用主要受控于岩性、岩体结构、饱和状态及温变环境等因素。采取新疆寒区4种裂隙岩石进行温度变化下的冻融应变试验,得到了裂隙岩石在饱水及干燥冻融状态下的应变过程,即饱水状态下为8个阶段、干燥状态下为5个阶段;针对饱水裂隙岩石提出了冻融作用的胀缩率?,得到了不同岩性的?与冻融循环次数的拟合关系表达式,同时分析了在循环冻融过程中应变的变化规律,即裂隙岩石的冻胀阶段的微应变最大值都随循环次数的增加而增大。此外,通过在不同恒温下裂隙岩石冻融应变试验,分析了应变的变化规律,得到应变与不同恒温的拟合关系表达式;试验结果表明:裂隙岩石的?都随冻融次数的增加而增大,胀缩率的变化程度与不同岩样的孔隙率特征有关。饱水裂隙岩石在冻融过程中对温度具有较强的敏感性,损伤表现在温度损伤和冻胀损伤。

关键词：裂隙岩石冻融循环应变胀缩率κ 温度损伤效应

Mapping super-resolution image quality

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第2期13卷 178-180页

作者： Megan A.Steves ke Xu Department of Chemistry University of CaliforniaBerkeleyCA94720USA

The local quality of super-resolution microscopy images can be assessed and mapped by rolling Fourier ring correlation,even when image quality varies within a single image.

关键词： image resolution Mapping

The prognostic value of collateral circulation in coronary chronic total occlusion underwent percutaneous coronary intervention

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2024年第2期21卷 232-241页

作者： Xiao-Ying HU Wei-Xian YANG Chang-Dong GUAN Li-Hua XIE ke-Fei DOU Yong-Jian WU jin-Qing YUAN Jie QIAN Yue-jin YANG Shu-Bin QIAO Lei SONG Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina National Clinical Research Center for Cardiovascular Diseases BeijingChina Catheterization Laboratories Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

BACKGROUND The prognostic value of coronary collateral circulation(CC)in patients undergoing chronic total occlusion(CTO)percutaneous coronary intervention(PCI)is *** purpose of the study was to assess the prognostic value of current two CC grading systems and their association with long-term outcomes in patients with CTO underwent *** We consecutively enrolled patients with single-vessel CTO underwent PCI between January 2010 and *** patients were categorized into well-developed or poor-developed collaterals group according to angiographic Werner's CC(grade 2 *** 0–1)or Rentrop(grade 3 *** 0–2)grading *** primary endpoint was 5-year cardiac *** Of 2452 enrolled patients,the overall technical success rate was 74.1%.Well-developed collaterals were present in686 patients(28.0%)defined by Werner's CC grade 2,and in 1145 patients(46.7%)by Rentrop grade *** to Werner's CC grading system,patients with well-developed collaterals had a lower rate of 5-year cardiac death compared with those with poordeveloped collaterals(1.6%vs.3.3%,P=0.02),those with suboptimal recanalization was associated with higher rate of 5-year cardiac death compared with optimal recanalization(4.7%vs.0.8%,P=0.01)and failure patients(4.7%vs.1.6%,P=0.12).However,the similar effect was not shown in Rentrop grading *** In patients with the single-vessel CTO underwent PCI,well-developed collaterals by Werner's CC definition were associated with lower rate of 5-year cardiac ***'s CC grading system had a greater prognostic value than Rentrop grading system in patients with CTO underwent PCI.

关键词： coronary collateral occlusion

GLOBAL UNIQUE SOLUTIONS FOR THE INCOMPRESSIBLE MHD EQUATIONS WITH VARIABLE DENSITY AND ELECTRICAL CONDUCTIVITY

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 2024年第5期44卷 1747-1765页

作者： Xueli ke School of Mathematics and Computational Science Xiangtan UniversityXiangtan411105China School of Mathematics and Information Science Henan Polytechnic UniversityJiaozuo454000China

We study the global unique solutions to the 2-D inhomogeneous incompressible MHD equations,with the initial data(u0,B0)being located in the critical Besov space■and the initial densityρ0 being close to a positive *** using weighted global estimates,maximal regularity estimates in the Lorentz space for the Stokes system,and the Lagrangian approach,we show that the 2-D MHD equations have a unique global solution.

关键词： inhomogeneous MHD equations electrical conductivity global unique solutions