检索结果-南通市图书馆

Hydration-Enhanced Lubricating Electrospun Nanofibrous Membranes Prevent Tissue Adhesion

Research 2020年第1期2020卷 812-823页

作者： Liang Cheng Yi Wang Guoming Sun Shizhu Wen Lianfu deng hongyu Zhang Wenguo Cui Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Shanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai 200025China State Key Laboratory of Tribology Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China College of Chemistry and Environmental Science Hebei UniversityBaoding 071002China Affiliated Hospital of Hebei University Baoding 071000China

Lubrication is the key to efficient function of human tissues and has significant impact on the comfort ***,the construction of a lubricating nanofibrous membrane has not been reported as yet,especially using a one-step surface modification ***,bioinspired by the superlubrication mechanism of articular cartilage,we successfully construct hydration-enhanced lubricating nanofibers via one-step in situ grafting of a copolymer synthesized by dopamine methacrylamide(DMA)and 2-methacryloyloxyethyl phosphorylcholine(MPC)onto electrospun polycaprolactone(PCL)*** zwitterionic MPC structure provides the nanofiber surface with hydration lubrication *** coefficient of friction(COF)of the lubricating nanofibrous membrane decreases significantly and is approximately 65%less than that of pure PCL nanofibers,which are easily worn out under friction regardless of *** lubricating nanofibers,however,show favorable wear-resistance ***,they possess a strong antiadhesion ability of fibroblasts compared with pure PCL *** cell density decreases approximately 9-fold,and the cell area decreases approximately 12 times on day ***,the in vivo antitendon adhesion data reveals that the lubricating nanofiber group has a significantly lower adhesion score and a better antitissue ***,our developed hydration-enhanced lubricating nanofibers show promising applications in the biomedical field such as antiadhesive membranes.

关键词： fibers hydration friction

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

孜然茎秆对大鼠幽门结扎型胃溃疡的作用效果研究

引用

现代农业科技 2023年第14期 188-193,198页

作者：安秀峰邓红雨田泽园卢帅康瑞萍王卓黄罗冬索菲娅新疆大学生命科学与技术学院新疆乌鲁木齐830046 康蒂思(上海)医疗器械有限公司上海200000 广西大学生命科学与技术学院广西南宁530004 塔城地区师范学校新疆塔城834700

为推动废弃孜然茎秆资源化利用,实现农业节能减排,本文提取了孜然茎秆的化学成分,研究了其对大鼠胃溃疡的作用效果。结果表明,孜然茎秆乙醇提取物对胃溃疡有明显的抑制作用,能减少大鼠胃液分泌,有效降低溃疡指数,抑制胃蛋白酶活性。15 m... 详细信息

为推动废弃孜然茎秆资源化利用,实现农业节能减排,本文提取了孜然茎秆的化学成分,研究了其对大鼠胃溃疡的作用效果。结果表明,孜然茎秆乙醇提取物对胃溃疡有明显的抑制作用,能减少大鼠胃液分泌,有效降低溃疡指数,抑制胃蛋白酶活性。15 mg/100 g孜然茎秆乙醇提取物的作用效果较好,可抑制血清丙二醛(MDA)生成,显著增加前列腺素E2(PGE2)和胃泌素(GAS)含量,降低表皮生长因子(EGF)的含量。综上,孜然茎秆乙醇提取物对大鼠幽门结扎型胃溃疡产生明显的保护作用,研究结果可为孜然茎秆的循环利用提供参考。

关键词：孜然茎秆乙醇提取物大鼠胃溃疡

来源：

维普期刊数据库博看期刊

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

ICP-MS法测定多种微量元素用于地理标志产品大米鉴定研究初探

引用

现代科学仪器 2010年第1期 80-82页

作者：黄小龙何小青张念邓宏玉陈树娣霍巨垣深圳市计量质量检测研究院

应用电感耦合等离子体质谱(ICP-MS)法对三种地理标志产品的大米中27种元素进行了系统研究。结果显示大米中含有大量的铝、铁、铜、锌、铷,含量都在1000μg/kg以上。此外除了Be、Ag、Sb、Te、Hg、Tl、Th、U等与地理条件的变化关系不大外... 详细信息

应用电感耦合等离子体质谱(ICP-MS)法对三种地理标志产品的大米中27种元素进行了系统研究。结果显示大米中含有大量的铝、铁、铜、锌、铷,含量都在1000μg/kg以上。此外除了Be、Ag、Sb、Te、Hg、Tl、Th、U等与地理条件的变化关系不大外,其余的元素都随着地理条件的不同差异较大,总体而言,B、Al、V、Cr、Fe、Sr、Sn这7种元素的含量在增城丝苗米中均较在马坝油毡米及盘锦大米要低,Cu、Zn、Se、Mo、Ba这五种元素的含量在增城丝苗米中均较在马坝油毡米及盘锦大米要高。Ga在马坝油毡米中含量最高。马坝油毡米中Pb、Cd含量较高,超过了GB2762中粮食的Pb、Cd的限量要求。这些差异主要是因为大米中各元素的含量受土壤及环境因素影响,也为地理标志产品的鉴定提供了思路。

关键词： ICP-MS 大米地理标志产品

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

分泌抗金黄色葡萄球菌细菌素乳酸菌的分离鉴定

引用

福建畜牧兽医 2014年第6期36卷 9-12页

作者：王全溪许丽惠邓红玉吴雪珍庄育彬福建农林大学动物科学学院福州350002

为分离和筛选产抗金黄色葡萄球菌乳酸菌素的优势乳酸菌,利用乳酸菌分离培养基MRS从收集的各种腌制菜汁中分离培养乳酸菌,通过细菌培养特性、革兰氏染色特点、生理生化特性初步鉴定,同时根据Genbank中乳酸菌的16S r DNA序列设计特异性引... 详细信息

为分离和筛选产抗金黄色葡萄球菌乳酸菌素的优势乳酸菌,利用乳酸菌分离培养基MRS从收集的各种腌制菜汁中分离培养乳酸菌,通过细菌培养特性、革兰氏染色特点、生理生化特性初步鉴定,同时根据Genbank中乳酸菌的16S r DNA序列设计特异性引物,采用PCR方法进一步鉴定,并以金黄色葡萄球菌为指示菌对乳酸菌的发酵上清液进行抑菌特性研究。结果表明,从腌渍菜汁中分离获得90株产酸菌,通过形态学、生理生化特性和PCR鉴定,结果 73株产酸菌为乳酸杆菌;分泌产物抑菌试验表明,有10株菌具有抑制金黄色葡萄球菌活性,经酸排除和过氧化氢排除试验,仍然有5株乳酸菌的分泌产物具有抑制金黄色葡萄球菌活性。可见,从腌渍菜汁分离到的乳酸菌具有抑制金黄色葡萄球菌活性的特性,主要是通过分泌乳酸菌素来发挥作用。

关键词：腌渍菜汁乳酸菌乳酸菌素金黄色葡萄球菌抑菌性

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

Vertical serpentine interconnect-enabled stretchable and curved electronics

引用

Microsystems & Nanoengineering 2023年第6期9卷 165-174页

作者： Rui Jiao Ruoqin Wang Yixin Wang Yik Kin Cheung Xingru Chen Xiaoyi Wang Yang deng hongyu Yu Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyKowloonHong Kong SAR 999077China HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute ShenzhenGuangdong 518045China

Stretchable and curved electronic devices are a promising technology trend due to their remarkable *** approaches have been developed to manufacture stretchable and curved ***,to allow such electronics to better serve practical applications,ranging from wearable devices to soft robotics,we propose a novel vertical serpentine conductor(VSC)with superior electrical stability to interconnect functional devices through a silicon-based microfabrication *** vacuum transfer printing(CVTP)technology was developed to transfer the networked platform onto complex curved surfaces to demonstrate *** mechanical and electrical performance were investigated numerically and *** VSC interconnected network provides a new approach for stretchable and curved electronics with high stretchability and reliability.

关键词： curved network electrical

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

Electric field controlled superlubricity of fullerene-based host–guest assembly

引用

Nano Research 2023年第1期16卷 583-588页

作者： Shanchao Tan hongyu Shi Xin Du Kunpeng Wang Haijun Xu Junhua Wan Ke deng Qingdao Zeng Yuhong Liu State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST)Beijing 100190China College of Chemical Engineering Jiangsu Key Lab of Biomass-based Green Fuels and ChemicalsNanjing Forestry UniversityNanjing 210037China Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal UniversityHangzhou 310012China Center of Materials Science and Optoelectonics Engineering University of Chinese Academy of SciencesBeijing 100049China

Controlling friction by the electric field is a promising way to improve the tribological performance of a variety of movable mechanical *** this work,the assembly structure and microscale superlubricity of a host–guest assembly are effectively controlled by the electric *** the help of the scanning tunneling microscopy(STM)technique,the host–guest assembly structures constructed by the co-assembly of fullerene derivative(Fluorene-C60)with macrocycles(4B2A and 3B2A)are explicitly *** with density functional theory(DFT),the distinct different assembly behaviors of fullerene derivatives are revealed at different probe biases,which is attributed to the molecular polarity of the fullerene *** the control on the adsorption behavior,the friction coefficient of host–guest assembly is demonstrated to be controllable in the electric field by using atomic force microscopy(AFM).At positive probe bias,the friction coefficient of the host–guest assembly is significantly reduced and achieves superlubricity(μmin=0.0049).The efforts not only help us gain insight into the host–guest assembly mechanism controlled by the electric field,but also promote the further application of fullerene in micro-electro-mechanical systems(MEMS).

关键词： superlubricity electric field friction control fullerene derivative host-guest assembly

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

Assembly of 3D-printed Ti scaffold and free vascularized fibula using a customized Ti plate for the reconstruction of mandibular defects

引用

Bio-Design and Manufacturing 2022年第2期5卷 424-429页

作者： Chiyang Zhong Yixuan Zhao hongyu Xing Qingguo Lai Runqi Xue Tianxiang Song Xiaopeng Tang Kaiwen Zhu Yanwei deng Department of Oral and Maxillofacial Surgery The Second HospitalCheeloo College of MedicineShandong UniversityJinan 250033China School of Stomatology Cheeloo College of MedicineShandong UniversityJinan 250012China School of Mechanical and Electronic Engineering Shandong Jianzhu UniversityJinan 250101China Research Center of 3D Printing in Stomatology of Shandong University Jinan 250012China

Introduction Mandibular segmental defects result in significant cosmetic and functional ***,the reconstruction of both the contour and function of the mandible is a challenging *** present,autologous vascularized fibu... 详细信息

关键词： fibula mandibular defects

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 Porous Graphene on LiOH Based Composite Materials for Low Temperature Thermochemical Heat Storage

引用

Journal of Renewable Materials 2022年第11期10卷 2895-2906页

作者： Lisheng deng hongyu Huang Zhaohong He Shijie Li Zhen Huang Mitsuhiro Kubota You Zhou Dezhen Chen Thermal and Environmental Engineering Institute School of Mechanical EngineeringTongji UniversityShanghai200092China Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou510640China Department of Chemical Engineering Graduate School of EngineeringNagoya UniversityNagoya464-8603Japan National Institute of Clean-and-Low-Carbon Energy Beijing102200China

Thermochemical heat storage material inorganic hydrate LiOH is selected as a promising candidate material for storing low-temperature heat energy because of its high energy density(1440 kJ/kg)and mild reaction ***,the low hydration rate of LiOH limits the performance of low temperature thermochemical heat storage system as well as the thermal *** this study,porous-graphene/LiOH composite thermochemical heat storage materials with strong water sorption property and higher thermal conductivity were synthesized by hydrothermal *** experimental results show that the hydration rate of the composites was greatly *** heat storage density of the composite materials was increased by 47%(from 661 kJ/kg to 974 kJ/kg).By combing the porous graphene,the thermal conductivity of composites with different contents were highly increased by 21.1%to 78.7%,but the increase of heat storage density is opposite to that of thermal *** development of high-performance materials for thermochemical heat storage should consider the relationship between the heat storage density and thermal conductivity of the material,and the thermal conductivity of the supporter needs to be further improved.

关键词： Thermochemical heat storage hydration thermal conductivity porous graphene

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

Hierarchical intercalation of tetrafluoroborate anion into graphite electrode from sulfolane

引用

Journal of Energy Chemistry 2022年第12期75卷 378-382,I0010页

作者： Yunju Wang hongyu Wang State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026AnhuiChina

The anion storage behavior of graphite positive electrode in a dual-ion battery is closely related to the solvation of anion in the corresponding electrolyte *** classical electrolyte solutions of Li BF_(4)^(-)sulfolane(SL)have long been recognized in the community of lithium batteries and still appear promising in dual-ion ***,the solvation of BF_(4)^(-)by SL has seldom been addressed *** this study,the solvation states of SL-BF_(4)^(-)are adjusted by varying LiBF_(4)concentration or introducing auxiliary salts of LiPF_6or SBPBF_(4)(SBP:spiro-(1,1')-bipyrrolidinium)in the electrolyte solutions of Li/graphite dualion *** electrochemical storage processes of SL-BF_(4)^(-)anions in graphite electrodes are investigated through in situ X-ray diffraction *** kinds of graphite intercalation compounds(GICs)with contrastive intercalation gallery heights(IGHs)have been discovered,which are ascribed to the storage of different kinds of SL-BF_(4)^(-)anions in graphite *** interactions between ions and SL in the electrolyte solutions are characterized by Fourier transform infrared spectroscopy and then correlated with the performance of Li/graphite cells.

关键词： Dual-ion batteries Lithium tetrafluoroborate Sulfolane In situ XRD Highly concentrated solutions

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

Identification and functional verification of Y-chromosome-specific gene typo-gyf in Bactrocera dorsalis

引用

Insect Science 2024年第4期31卷 1270-1284页

作者： Peipei Liu Shuning Yu Wenping Zheng Qiuyuan Zhang Jiao Qiao Ziniu Li Zhurong deng hongyu Zhang National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops Hubei Hongshan LaboratoryChina-Australia Joint Research Centre for Horticultural and Urban PestsInstitute of Urban and Horticultural EntomologyCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina

Genes on the Y chromosome play important roles in male sex determination and *** identification of Y-chromosome-specific genes not only provides a theoretical basis for the study of male reproductive development,but also offers genetic control targets for agricultural ***,Y-chromosome genes are rarely characterized due to their high repeatability and high heterochromatinization,especially in the oriental fruit *** this study,1011 Y-chromosome-specific candidate sequences were screened from 2 to 4 h Bactrocera dorsalis embryo datasets with the chromosome quotient method,6 of which were identified as Y-chromosome-specific sequences by polymerase chain reaction,including typo-gyf,a 19126-bp DNA sequence containing a 575-amino acid open reading *** deformation and a significant reduction in sperm number were observed after typo-gyf knockdown with RNA interference in *** typo-gyf knockout with clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein 9 in the embryonic stage,the sex ratio of the emergent adults was unbalanced,with far more females than males.A genotype analysis of these females with the Y-chromosome gene MoY revealed no sex ***-gyf knockout led to the death of XY individuals in the embryonic *** conclude that typo-gyf is an essential gene for male survival,and is also involved in testicular development and *** identification of typo-gyf and its functional verification provide insight into the roles of Y-chromosome genes in male development.

关键词： Bactrocera dorsalis spermatogenesis testis typo-gyf gene Y-specific gene

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：