检索结果-南通市图书馆

Universal paradigm of ternary metacomposites with tunable epsilon-negative and epsilon-near-zero response for perfect electromagnetic shielding

引用

Rare Metals 2024年第2期43卷 796-809页

作者： yun-Peng Qu yun-lei zhou Yang Luo Yao Liu Jun-Fei Ding Yan-Li Chen Xiu Gong Jing-Liang Yang Qiong Peng Xiao-Si Qi College of Physics Guizhou UniversityGuiyang550025China Hangzhou Institute of Technology Xidian UniversityHangzhou311231China Department of Materials ETH Zurich8093ZurichSwitzerland Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan250061China

CaCu_(3)Ti_(4)O_(12)(CCTO)ceramic nanocomposites incorporating graphene–carbon black(GRCB)fillers were fabricated by spark plasma sintering process.The percolative effects of conductive GRCB fillers on dielectric response of GRCB/CCTO ternary metacomposites were systematically investigated.The weakly real permittivity(ε′)-negative response(ε′~−1×10^(2))was achieved which originated from weakly low-frequency plasmonic state of free carriers within constructed GRCB networks.With enhancing three-dimensional GRCB network,the plasma frequency of metacomposites increased while the damping factor decreased.Herein,theε′-negative values of metacomposites were tuned from−10^(2) to−10^(4) orders of magnitude andε′-near-zero(ENZ)frequencies from~142 to~340 MHz which substantially benefited from the moderate carrier concentration of GRCB dual fillers.The Drude model and equivalent circuit models were adopted to demonstrate dielectric and electrical characteristics.The obtained metacomposites show strong EM shielding effect along with enhanced plasmonic oscillation and even better achieving perfect EM shielding effect in ENZ media.This work achieves the tunableε′-negative andε′-near-zero response and more importantly clarifies its regulation mechanism in ceramic-based ternary metacomposites,which opens up the possibility of designing high-performance EM shielding materials based on metacomposites.

关键词： Metacomposites Ceramic matrix composites Negative permittivity Epsilon-near-zero Electromagnetic shielding

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

Rise of flexible high-temperature electronics

引用

Rare Metals 2023年第6期42卷 1773-1777页

作者： yun-lei zhou Wen-Na Cheng yun-Zhao Bai Chao Hou Kan Li Yong-An Huang State Key Laboratory of Digital Manufacturing Equipment and Technology Flexible Electronics Research CenterHuazhong University of Science and TechnologyWuhan430074China School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan430074China

Flexible high-temperature electronics is a compliant form of high-temperature electronics to expand the application areas of conventional flexible one.In aerospace applications,electronic devices are not only required to be deformable but also to be able to withstand extreme temperatures.The disadvantages of current flexible electronics,such as high cost,large differences between components,and even requiring independent debugging,are acceptable.

关键词： electronics extreme high

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

Ultralight and compressive SiC nanowires aerogel for high-temperature thermal insulation

引用

Rare Metals 2023年第10期42卷 3354-3363页

作者： Jun-Xiong Zhang Jing Zhang Xin-Li Ye Xiao-Ming Ma Rong Liu Qi-Long Sun yun-lei zhou School of Textile and Clothing Nantong UniversityNantong226019China School of Civil Aviation Northwestern Polytechnical UniversityXi’an710072China National Equipment New Materials&Technology(Jiangsu)Co. LtdSuzhou215101China Hangzhou Institute of Technology Xidian UniversityHangzhou311231China

Aerogels with excellent properties combination of ultralow density and great thermal insulation are drawing attention to applications in harsh conditions.Common aerogels,however,are usually constructed with nanoparticles with a weakness in physical combination.The silicon carbide nano wire(SiC_(NW)) is a kind of one-dimensional(1D) nano wire possessing the promising properties of flexibility,great thermal insulation,and stability at high temperatures.An aerogel constructed by the SiC_(NW) will produce a great material with a promising material,the amazing SiC_(NW) aerogel.Here,a novel SiC_(NW) aerogel was fabricated consisting of quantities of β-SiC_(NW) of15-40 nm in diameter and tens to hundreds of micrometers in length.This SiC_(NW) aerogel possessed an ultralow density of 5.82 mg·cm^(-3),high-temperature resistance,and great thermal insulation with its thermal conductivities of0.063 W·m^(-1)·K^(-1) at 100℃ and 0.243 W·m^(-1)·K^(-1) at900℃ in He.Furthermore,the thermal insulation applicability of this aerogel was simulated.This study provides a promising way for designing and fabricating other multifunctional nanowire aerogels for high-temperature thermal insulation.

关键词： SiC nanowires Aerogel Thermal insulation Thermal conductivity

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

Flexible silver nanorods/carbon fiber felt metacomposites with epsilon-near-zero property adjusted by compressive deformation

引用

Rare Metals 2023年第10期42卷 3318-3325页

作者： Jia-Hong Tian Run-Hua Fan Peng-Tao Yang Hai-Kun Wu Shan Jiang yun-lei zhou Andrey Karlovich Sarychev College of Ocean Science and Engineering Shanghai Maritime UniversityShanghai201306China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan250012China Hangzhou Institute of Technology Xidian UniversityHangzhou311231China State Key Laboratory of Digital Manufacturing Equipment and Technology Flexible Electronics Research CenterHuazhong University of Science and TechnologyWuhan430074China Institute for Theoretical and Applied Electrodynamics Russian Academy of ScienceMoscow125412Russia

Epsilon-near-zero(ENZ) materials exhibit great potentials in the practical applications of sensors,electronic skin,and wearable devices,when they own the properties of flexibility and compression.In this work,the silver nanorods(AgNRs)/carbon fiber felt(CFF) composites with ENZ property from 1 kHz to 1 MHz were achieved by adjusting the content of AgNRs and the compressed elastic deformation.

关键词： composites nanorods silver

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

Recent advances in cancer-associated fibroblast:Biomarkers,signaling pathways,and therapeutic opportunities

引用

Chinese Medical Journal 2024年第6期137卷 638-650页

作者： Donger zhou lei Zheng Department of Hepatobiliary-Pancreatic Surgery The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang 310009China Sidney Kimmel Comprehensive Cancer Center The Skip Viragh Pancreatic Cancer Center for Clinical Research and Careand The Bloomberg-Kimmel Institute for Immunotherapy at Johns Hopkins University School of MedicineBaltimoreMD 21287USA

Anti-cancer therapies usually focus on tumor cells,but non-tumor stromal components in the tumor microenvironment also play vital roles in tumor initiation and progression,which may be the prognostic factors and potential therapeutic targets.Cancer-associated fibroblasts(CAFs)are the essential component in the tumor environment,exhibiting high heterogeneity in their cell origin and phenotype with diverse functions that influence tumor angiogenesis,immune systems,and metabolism.Single-cell RNA sequencing and genetically engineered mouse models have increased our understanding of CAF diversity,and many subtypes have been defined.However,the precise functions of these subtypes need to be studied and validated.Studies of signaling pathways and epigenetic changes in CAFs facilitate understanding of the phenotypes of CAFs and the crosstalk between tumor cells and CAFs to provide potential therapeutic targets.Some clinical trials,including phase III trials targeting CAFs,have been performed recently.However,few of these trials have generated promising results,which indicates that the complexity of CAFs in the tumor microenvironment remains largely unknown,and in-depth investigations of CAFs should be performed.This review summarizes the research on CAFs,focusing on the heterogeneity of their phenotypes and functions,specific signaling pathways,and the therapeutic strategies involving CAFs.Additionally,we briefly discuss the current technologies commonly used in CAF studies and describe the challenges and future perspectives of CAF research.

关键词： Cancer-associated fibroblasts Tumor microenvironment Anti-cancer therapy Targeted therapy

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

An exo Probe-based Reverse Transcription and Recombinase Polymerase Amplification for Rapid Detection of Feline Calicivirus in Cats

引用

Biomedical and Environmental Sciences 2024年第3期37卷 325-330页

作者： MU Hong yun zhou Hong lei JING Zheng LU Wei ZHANG Jian Wei Jiangsu Agri-animal Husbandry Vocational College Taizhou 225300JiangsuChina Boehringer Ingelheim Animal Health(Shanghai)Co. LTD.Shanghai 200040China

Feline calicivirus(FCV)was a highly prevalent RNA virus causing upper respiratory tract infections in cats through the mouth and nose around the world,result in the death of cats especially under 1 year old with upper respiratory tract disease(URTD)and virulent systemic disease(FCV-VSD)[1].Infected cats usually presented with mouth ulcers,salivation and gingivitis-stomatitis.Furthermore,both recovered cats and asymptomatic carriers can still carry and spread the FCV virus for extended periods of time,contributing to the potential for outbreak.This presented a significant threat to the health and lives of cats,and rare wildlife and took a heavy financial loss on the pet industry,making the prevention and control of the virus difficult.Hence,rapid identification of FCV in clinical samples was necessary to prevent the spread of FCV and avoid financial loss.

关键词： prevention respiratory Probe

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

Multi-time Collaborative Restoration for Integrated Electrical-gas Distribution Systems Based on Rolling Optimization

引用

CSEE Journal of Power and Energy Systems 2024年第2期10卷 660-671页

作者： Jingyang yun Zheng Yan yun zhou Peichao Zhang Weidong Hu Key Laboratory of Control of Power Transmission and Conversion of Ministry of Education Department of Electrical EngineeringShanghai Jiao Tong University

This paper proposes a multi-time collaborative restoration model for integrated electricity-gas distribution sys-tems(IEGDSs)considering multiple resources after extreme weather events.Based on the linearized power flow constraints of the unbalanced electrical distribution system(EDS)and gas distribution system(GDS),this problem can be formulated as a mixed-integer linear programming(MILP)model.To improve the efficiency and veracity of the solution,a rolling optimiza-tion based two-stage method is developed with the first stage solved by a linear approximation model,and the second stage solved by real-time updated rolling optimization.By solving the MILP problem using rolling optimization,the proposed model and solution method achieve efficient and reliable collaborative restoration of IEGDS considering multiple resources and unbal-anced operation characteristics of EDS.The effectiveness of the proposed model and method is validated by using an IEGDS made of a 37-bus unbalanced EDS and 11-node GDS.Index Terms-Electricity-gas system,mix-integer linear programming,power system restoration.

关键词： Electricity-gas system mix-integer linear programming power system restoration

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

SARS-CoV-2 envelope protein impairs airway epithelial barrier function and exacerbates airway inflammation via increased intracellular Cl^(-)concentration

引用

Signal Transduction and Targeted Therapy 2024年第4期9卷 1745-1759页

作者： Jian-Bang Xu Wei-Jie Guan Yi-Lin Zhang Zhuo-Er Qiu lei Chen Xiao-Chun Hou Junqing Yue Yu-yun zhou Jie Sheng lei Zhao yun-Xin Zhu Jing Sun Jincun Zhao Wen-Liang zhou Nan-Shan Zhong State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseNational Center for Respiratory MedicineDepartment of Respiratory and Critical Care MedicineGuangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouP.R.China Department of Thoracic Surgery Guangzhou Institute for Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouP.R.China Guangzhou National Laboratory GuangzhouP.R.China School of Life Sciences Sun Yat-sen UniversityGuangzhouP.R.China Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes School of Life SciencesSun Yat-sen UniversityGuangzhouP.R.China Department of Physiology School of Basic Medical SciencesGuangzhou Medical UniversityGuangzhouP.R.China

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection disrupts the epithelial barrier and triggers airway inflammation.The envelope(E)protein,a core virulence structural component of coronaviruses,may play a role in this process.Pathogens could interfere with transepithelial Cl^(-)transport via impairment of the cystic fibrosis transmembrane conductance regulator(CFTR),which modulates nuclear factor kB(NF-kB)signaling.However,the pathological effects of SARS-CoV-2 E protein on airway epithelial barrier function,Cl^(-)transport and the robust inflammatory response remain to be elucidated.Here,we have demonstrated that E protein down-regulated the expression of tight junctional proteins,leading to the disruption of the airway epithelial barrier.In addition,E protein triggered the activation of Toll-like receptor(TLR)2/4 and downstream c-Jun N-terminal kinase(JNK)signaling,resulting in an increased intracellular Cl^(-)concentration([Cl^(-)]_(i))via up-regulating phosphodiesterase 4D(PDE4D)expression in airway epithelial cells.This elevated[Cl^(-)]_(i);contributed to the heightened airway inflammation through promoting the phosphorylation of serum/glucocorticoid regulated kinase 1(SGK1).Moreover,blockade of SGK1 or PDE4 alleviated the robust inflammatory response induced by E protein.Overall,these findings provide novel insights into the pathogenic role of SARS-CoV-2 E protein in airway epithelial damage and the ongoing airway inflammation during SARS-CoV-2 infection.

关键词： airway inflammation elevated

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

Chromosome-level genome assembly of Oncomelania hupensis: the intermediate snail host of Schistosoma japonicum

引用

Infectious Diseases of Poverty 2024年第1期13卷 16-26页

作者： Qin Liu lei Duan yun-Hai Guo Li-Min Yang Yi Zhang Shi-Zhu Li Shan Lv Wei Hu Nan-Sheng Chen Xiao-Nong zhou National Institute of Parasitic Diseases at Chinese Center for Disease Control and Prevention(Chinese Centerfor Tropical Diseases Research) NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesNational Key Laboratory of Intelligent Tracking and Forecasting for Infectious DiseasesShanghai 200025People's Republic of China School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghai 200025People's Republic of China School of Life Science Fudan UniversityShanghai 200438People's Republic of China CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdaoShandong 266071People'sRepublicofChina

Background Schistosoma japonicum is a parasitic flatworm that causes human schistosomiasis,which is a signif-cant cause of morbidity in China,the Philippines and Indonesia.Oncomelania hupensis(Gastropoda:Pomatiopsidae)is the unique intermediate host of S.japonicum.A complete genome sequence of O.hupensis will enable the funda-mental understanding of snail biology as well as its co-evolution with the S.japonicum parasite.Assembling a high-quality reference genome of O.hupehensis will provide data for further research on the snail biology and controlling the spread of S.japonicum.Methods The draft genome was de novo assembly using the long-read sequencing technology(PacBio Sequel I)and corrected with llumina sequencing data.Then,using Hi-C sequencing data,the genome was assembled at the chromosomal level.CAFE was used to do analysis of contraction and expansion of the gene family and CodeML module in PAML was used for positive selection analysis in protein coding sequences.Results A total length of 1.46 Gb high-quality O.hupensis genome with 17 unique full-length chromosomes(2n=34)of the individual including a contig N50 of 1.35 Mb and a scaffold N50 of 75.08 Mb.Additionally,95.03%of these con-tig sequences were anchored in 17 chromosomes.After scanning the assembled genome,a total of 30,604 protein-coding genes were predicted.Among them,86.67%were functionally annotated.Further phylogenetic analysis revealed that O.hupensis was separated from a common ancestor of Pomacea canaliculata and Bellamya purificata approximately 170 million years ago.Comparing the genome of O.hupensis with its most recent common ancestor,it showed 266 significantly expanded and 58 significantly contracted gene families(P<0.05).Functional enrichment of the expanded gene families indicated that they were mainly involved with intracellular,DNA-mediated transposi-tion,DNA integration and transposase activity.Conclusions Integrated use of multiple sequencing technologies,we have successfully constructed the genome at the chromosomal-level of O

关键词： Schistosomiasis Schistosoma japonicum Oncomelania hupensis Chromosome-level genome

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

Effects of Number of Bleed Holes on Shock-Wave/Boundary-Layer Interactions in a Transonic Compressor Stator

引用

Journal of Thermal Science 2024年第2期33卷 611-624页

作者： LI Bai zhou Xun LUO lei DU Wei School of Energy Science and Engineering Harbin Institute of TechnologyHarbin150001China

An extensive numerical investigation is conducted to characterize the flow separation control in a transonic compressor cascade with a porous bleed.The bleed holes are arranged on the suction surface in a single row,two staggered rows and three staggered rows.For each bleed scheme,five bleed pressure ratios are examined at an inlet Mach number of 1.0.The results indicate that the aerodynamic performance of the cascade is significantly improved by the porous bleed.For the single-row scheme,the maximum reduction in total pressure losses is 57%.For the two-staggered-row and three-staggered-row schemes,there is an optimal bleed pressure ratio of 1.0,and the maximum reductions in total pressure loss are 68% and 75%,respectively.The low loss in the cascade is due to the well-controlled boundary layer.The new local supersonic region created by the bleed hole is the key reason for the improved boundary layer.The vortex induced by side bleeding provides another mechanism for delaying flow separation.Increasing the bleed holes could create multiple local supersonic regions,which reduce the range of the adverse pressure gradient that the boundary layer needs to withstand.This is the reason why cascades with more bleed holes perform better.

关键词： transonic compressor stator shock wave/boundary layer interaction porous bleed number of bleed holes

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

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：