检索结果-南通市图书馆

Friction and Wear Performance of Boron Doped, Undoped Microcrystalline and Fine Grained Composite Diamond Films

Chinese Journal of Mechanical Engineering 2015年第1期28卷 155-163页

作者： wang xinchang wang Liang SHEN Bin SUN Fanghong School of Mechanical Engineering Shanghai Jiao Tong University

Chemical vapor deposition （CVD） diamond films have attracted more attentions due to their excellent mechanical properties. Whereas as-fabricated traditional diamond films in the previous studies don＇t have enough adhesion or surface smoothness, which seriously impact their friction and wear performance, and thus limit their applications under extremely harsh conditions. A boron doped, undoped microcrystalline and fine grained composite diamond （BD-UM-FGCD） film is fabricated by a three-step method adopting hot filament CVD （HFCVD） method in the present study, presenting outstanding comprehensive performance, including the good adhesion between the substrate and the underlying boron doped diamond （BDD） layer, the extremely high hardness of the middle undoped microcrystalline diamond （UMCD） layer, as well as the low surface roughness and favorable polished convenience of the surface fine grained diamond （FGD） layer. The friction and wear behavior of this composite film sliding against low-carbon steel and silicon nitride balls are studied on a ball-on-plate rotational friction tester. Besides, its wear rate is further evaluated under a severer condition using an inner-hole polishing apparatus, with low-carbon steel wire as the counterpart. The test results show that the BD-UM-FGCD film performs very small friction coefficient and great friction behavior owing to its high surface smoothness, and meanwhile it also has excellent wear resistance because of the relatively high hardness of the surface FGD film and the extremely high hardness of the middle UMCD film. Moreover, under the industrial conditions for producing low-carbon steel wires, this composite film can sufficiently prolong the working lifetime of the drawing dies and improve their application effects. This research develops a novel composite diamond films owning great comprehensive properties, which have great potentials as protecting coatings on working surfaces of the wear-resistant and anti-frictional components.

关键词： BD-UM-FGCD film HFCVD friction behavior wear performance application

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

Classifying rheumatoid arthritis by Traditional Chinese Medicine Zheng: a multi-center cross-sectional study

引用

Journal of Traditional Chinese Medicine 2019年第3期39卷 425-432页

作者： wang Weijie Tang Xiaopo wang xinchang Jiang Quan Fan Yongsheng Department of Rheumatology The Second Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310005 China Department of Rheumatology Guang'anmen Hospital China Academy of Chinese Medical Sciences Beijing 100053 China Institute of Rheumatology Zhejiang Chinese Medical University Hangzhou 310053 China

OBJECTIVE:To assess the relationship between disease symptoms and traditional Chinese medicine (TCM) syndrome (Zheng) in rheumatoid arthritis (RA) patients.METHODS:RA Patients were recruited in Guang'anmen Hospital,China Academy of Chinese Medical Sciences and in the Second Affiliated Hospital of Zhejiang Chinese Medical University,and diagnosed with a particular RA Zheng from their symptoms.Demographic characteristics,self-reported symptoms,and blood samples were collected from patients.All data were input into EpiData and analyzed using SPSS software.RESULTS:The study included 302 RA patients (age range:18-86 years).All patients were Chinese,and 85.1% were women.Cold and fatigue triggers were reported by 8.6% of patients,followed by triggers such as childbirth (4.3%),cold (3.0%),dampness (2.0%),menopause (1.3%),and psychentonia (0.7%).The most prevalent Zheng was dampness and heat blockage (Shire Yuzu in Chinese,SRYZ),diagnosed in 39.4% of patients (119),followed by phlegm and stagnation blockage (Tanyu Bizu,TYBZ) in 21.5%,liver and kidney deficiency (Ganshen Buzu,GSBZ) in 18.5%,dual deficiency of Qi and blood (Qixue Liangxu,QXLX) in 9.6%,cold and dampness blockage (Hanshi Bizu,HSBZ) in 6%,and wind and dampness blockage (Fengshi Bizu,FSBZ) in 5%.Increased length of time since RA diagnosis was associated with the GSBZ group.Patients diagnosed with the SRYZ Zheng had the highest disease activity score.Patients diagnosed with the QXLX Zheng had the lowest blood platelet counts;patients diagnosed with the QXLX and HSBZ Zhengs had lower C-reactive protein levels and lower health assessment questionnaire scores.Patients diagnosed with the GSBZ and QXLX Zhengs had the highest health assessment questionnaire scores.CONCLUSION:The specific Zheng was related to RA characteristics.The findings suggest that eliminating dampness,cooling the patient,and promoting blood circulation may assist in treating severe RA.

关键词： Arthritis,rheumatoid Symptoms and signs Syndrome complex Cross-sectional studies

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

PCBP1在原发性干燥综合征干眼患者泪液中的表达及其相关性

引用

中华眼视光学与视觉科学杂志 2024年第4期26卷 276-283页

作者：胡圣佳俞萍萍王新昌陈慕芝杨立浙江中医药大学附属第二医院眼科杭州

目的: 研究原发性干燥综合征(PSS)相关干眼患者泪液中多聚胞嘧啶结合蛋白1(PCBP1)的表达水平及其与临床干眼指标之间的相关性。方法: 病例对照研究。选取2023年7—10月在浙江中医药大学附属第二医院眼科确诊为PSS伴干眼的患者6例(12眼)... 详细信息

目的: 研究原发性干燥综合征(PSS)相关干眼患者泪液中多聚胞嘧啶结合蛋白1(PCBP1)的表达水平及其与临床干眼指标之间的相关性。方法: 病例对照研究。选取2023年7—10月在浙江中医药大学附属第二医院眼科确诊为PSS伴干眼的患者6例(12眼)为SS干眼组, 同期选取健康人6例(12眼)为正常组, 选取同家医院非SS干眼患者6例(12眼)为非SS干眼组, 分别完成3组研究对象的眼表疾病指数问卷(OSDI)、泪河高度(TMH)、非侵入式泪膜破裂时间(NIBUT)、角膜荧光素染色(CFS)、睑板腺缺失度评分(MGL)、眼红指数(ORI)、Schirmer试验(SIt)和泪液采集。ELISA检测3组泪液中PCBP1的表达水平, 并分析其与临床干眼指标的相关性, 采用单因素方差分析、Pearson相关分析、受试者工作特征曲线进行数据分析。结果: OSDI评分:正常组非SS干眼组>SS干眼组, 差异均有统计学意义(均P0.05)。ORI:正常组0.05)。受试者工作特征曲线分析显示, 泪液PCBP1表达水平诊断PSS干眼症的曲线下面积为0.944, 得到最大约登指数为0.817, 最大阈值为1.201, 此时灵敏度和特异度分别为0.956和0.861。ELISA定量测定泪液PCBP1结果显示正常组<非SS干眼组

关键词：原发性干燥综合征干眼多聚胞嘧啶结合蛋白1

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

Opportunities and challenges of strain engineering for advanced electrocatalyst design

引用

Nano Research 2023年第7期16卷 8655-8669页

作者： Qing-Man Liang xinchang wang Xin-wang Wan Long-Xing Lin Bi-Jun Geng Zhong-Qun Tian Yang Yang Department of Physics Pen-Tung Sah Institute of Micro-Nano Science and TechnologyState Key Laboratory of Physical Chemistry of Solid SurfacesXiamen UniversityXiamen 361005China

Electrocatalysis is becoming more and more important in energy conversion and storage due to rising energy demands,increasing carbon dioxide emissions,and impending climate change.The design and synthesis of high-performance electrocatalysts are the spotlights of electrocatalysis.Among many design methodologies reported,strain engineering has gained growing attention because it can change the atomic arrangement and lattice structure of electrocatalysts.However,strain engineering remains to be problematic in regulating the properties of electrocatalysts.This review discusses the strain effect tactics to regulate metal and non-metal electrocatalysts,including three sections focusing on strain categorization,strain regulation mechanism,and applications in electrocatalysis,respectively.Finally,the current challenges and an outlook of strain engineering are discussed.

关键词： electrocatalysis electrocatalyst design strain engineering categorization and mechanism applications in electrocatalysis

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

Kinetic Investigation of a Cucurbit[7]uril-Based Pseudo[6]rotaxane System by Microfluidic Nuclear Magnetic Resonance

引用

CCS Chemistry 2022年第2期4卷 557-565页

作者： Yibin Sun Hongxun Fang Xujing Lin Xiuxiu wang Ganyu Chen xinchang wang Zhongqun Tian Liulin Yang Marcel Utz Xiaoyu Cao State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringCollaborative Innovation Center of Chemistry for Energy Materials(iChEM)Key Laboratory of Chemical Biology of Fujian ProvinceXiamen UniversityXiamen 361005 School of Electronic Science and Engineering(National Model Microelectronics College) Xiamen UniversityXiamen 361005 School of Chemistry University of SouthamptonSouthampton SO171BJ

It is challenging to investigate fast supramolecular processes due to the lack of appropriate characterization methods with high structural resolution.In this study,microfluidic nuclear magnetic resonance(μFNMR)spectroscopy was employed to monitor the kinetics of threading and dethreading of a pseudo[6]rotaxane system.By employing high time resolutionμF-NMR,1 H and two-dimensional(2D)rotating frame nuclear Overhauser effect spectroscopy(ROESY)NMR spectra were recorded at any time point within 1.5 s after the onset of the process.This technique enabled the successful identification of kinetic intermediates and rate-determining steps,usually impossible to determine by other spectroscopic techniques.Thus,our study demonstrates the capability ofμF-NMR in investigating the mechanism of complex supramolecular systems.

关键词： host-guest chemistry kinetics cucurbituril β-cyclodextrin microfluidic NMR

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

Probing the kinetics in supramolecular chemistry and molecular assembly by microfluidic-NMR spectroscopy

引用

Science China Chemistry 2018年第11期61卷 1460-1464页

作者： Hongxun Fang Yibin Sun xinchang wang Manvendra Sharma Zhong Chen Xiaoyu Cao Marcel Utz Zhongqun Tian State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Collaborative Innovation Center of Chemistry for Energy Materials and Key Laboratory of Chemical Biology of Fujian Province Xiamen University Department of Electronic Science Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance Xiamen University School of Chemistry University of Southampton

Microfluidic-NMR spectroscopy has been extended to study the kinetics in supramolecular chemistry and molecular assembly.Kinetics of a multicomponent host-guest supramolecular system containing viologen derivatives, β-cyclodextrins and cucurbit[7]urils are studied by a PMMA based microfluidic chip combined with a dedicated transmission line probe for NMR detection.By combining microfluidic technology with NMR spectroscopy, the amount of material required for a full kinetic study could be minimized. This is crucial in supramolecular chemistry, which often involves highly sophisticated and synthetically costly building blocks. The small size of the microfluidic structure is crucial in bringing the time scale for kinetic monitoring down to seconds. At the same time, the transmission line NMR probe provides sufficient sensitivity to work at low(2 m M) concentrations.

关键词：超分子动力学光谱学化学探查汇编 NMR PMMA

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

Assessment of the fused image of multispectral and panchromatic images of SPOT5 in the investigation of geological hazards

引用

Science China(Technological Sciences) 2008年第S2期51卷 144-153页

作者： KANG TingJun,ZHANG xinchang & wang HaiYing Department of Remote Sensing and GIS Engineering,Sun Yat-sen University,Guangzhou 510275,China Department of Remote Sensing and GIS Engineering Sun Yat-sen University Guangzhou China

The investigated area in this paper is located on the northern mountain in Guangzhou City.It is characterized by high relief and inaccessibility.Multispectral and pan Images of SPOT5 were used as the remote sensing data source,and high-pass filtering(HPF),Brovery transform(BT),intensity-hue-saturation(IHS),principal component analysis(PCA) and the modified IHS(MIHS) methods were adopted for image fusion.Here,a comparison has been made between the entire fused images and the original multispectral images.Subjective evaluation and objective evaluation(entropy,average gradient,correlation coefficient,distribution of gray) have been adopted to assess the quality of the fused images.Also regional geological survey has been taken to find the interpretation veracity.Results show that the MIHS is the best image fusion method for geological hazards interpretation,and the fused image can provide abundant textural and spectral information for easy interpretation of such geological hazards as collapse,landslip,and debris flow.

关键词： geological hazard remote sensing image fusion SPOT5

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

面向散热应用的碳化硅表面热丝化学气相沉积金刚石膜生长速率

引用

上海交通大学学报 2023年第8期57卷 1078-1085页

作者：李维汉乔煜疏达王新昶安徽工程大学机械工程学院安徽芜湖241000 上海交通大学机械与动力工程学院上海200240 奥卢大学纳米与分子材料研究中心芬兰奥卢FIN-90014

金刚石具有极高的导热系数,在热管理中具有广阔的应用前景.基于热丝化学气相沉积法,采用多次沉积工艺在碳化硅表面制备了金刚石厚膜.采用扫描电子显微镜和拉曼光谱仪对金刚石膜进行了表征,系统地研究了热丝功率、碳源浓度和反应压力等... 详细信息

金刚石具有极高的导热系数,在热管理中具有广阔的应用前景.基于热丝化学气相沉积法,采用多次沉积工艺在碳化硅表面制备了金刚石厚膜.采用扫描电子显微镜和拉曼光谱仪对金刚石膜进行了表征,系统地研究了热丝功率、碳源浓度和反应压力等工艺参数对金刚石生长速率及质量的影响.研究结果表明,当热丝功率为1600 W、碳源浓度在形核阶段为18/300和生长阶段为14/300、反应压力为4 kPa时制备的金刚石膜质量最佳,此时金刚石膜生长速率约为1.4μm/h.

关键词：热丝化学气相沉积金刚石膜生长速率质量散热

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

仕阳水库精准调度措施探析

引用

中国水能及电气化 2022年第9期 46-49页

作者：王德明王新昌赵新昌莒县仕阳水库管理服务中心山东日照276526

水库作为蓄水兴利和防洪减灾的重要水利工程,其兴利和防洪调度技术具有广泛性和深入性。文章以莒县仕阳水库调度实际工作为例,分析了水库调度精准化控制问题,探讨了小流量、分阶段、预调腾出库容迎汛等防汛防洪调度方式,以期对优化水库... 详细信息

水库作为蓄水兴利和防洪减灾的重要水利工程,其兴利和防洪调度技术具有广泛性和深入性。文章以莒县仕阳水库调度实际工作为例,分析了水库调度精准化控制问题,探讨了小流量、分阶段、预调腾出库容迎汛等防汛防洪调度方式,以期对优化水库调度提供一种新思路,为发挥水库经营效益,提高安全管理水平提供参考。

关键词：水库调度精准化兴利与防洪调度

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

益气养阴祛瘀方对干燥综合征NOD小鼠颌下腺AQP5、M3R表达的影响

引用

中药新药与临床药理 2023年第5期34卷 613-619页

作者：任雅婷刘丹周东海王新昌浙江中医药大学第二临床医学院浙江杭州310053 浙江时迈药业有限公司浙江杭州310053 浙江中医药大学附属第二医院浙江杭州310005

目的研究益气养阴祛瘀方(黄芪、生地黄、玄参、丹参、益母草等)对干燥综合征NOD小鼠颌下腺水通道蛋白5(AQP5)以及毒蕈碱样胆碱能受体3(M3R)表达的影响。方法将30只NOD小鼠随机分为5组:模型组、西药组(硫酸羟氯喹60 mg·kg^(-1))及益气... 详细信息

目的研究益气养阴祛瘀方(黄芪、生地黄、玄参、丹参、益母草等)对干燥综合征NOD小鼠颌下腺水通道蛋白5(AQP5)以及毒蕈碱样胆碱能受体3(M3R)表达的影响。方法将30只NOD小鼠随机分为5组:模型组、西药组(硫酸羟氯喹60 mg·kg^(-1))及益气养阴祛瘀方低、中、高剂量组(11.147、22.295、44.590 g·kg^(-1)),每组6只。每日灌胃给药1次,连续给药8周。给药后第0、4、8周连续测量小鼠每日饮水量;给药结束后,分离小鼠双侧颌下腺并称定其质量,计算小鼠颌下腺指数;采用HE染色法进行颌下腺组织病理学观察,计算灶性指数评分;RT-qPCR法检测小鼠颌下腺组织AQP5、M3R mRNA表达水平;Western Blot法检测小鼠颌下腺组织AQP5、M3R蛋白表达水平;免疫组化法检测颌下腺组织AQP5蛋白表达水平;ELISA法检测血清干扰素γ(IFN-γ)、白细胞介素10(IL-10)含量。结果给药前,与模型组比较,益气养阴祛瘀方低、中、高剂量组及西药组NOD小鼠的日饮水量无明显变化(P>0.05);给药第4、8周,与模型组比较,益气养阴祛瘀方低、中、高剂量组及西药组NOD小鼠的日饮水量均显著减少(P<0.01)。模型组小鼠颌下腺淋巴细胞浸润明显并形成较多浸润灶;与模型组比较,益气养阴祛瘀方低、中、高剂量组及西药组NOD小鼠的颌下腺淋巴细胞浸润情况得到明显改善,浸润灶数量明显减少,灶性指数评分显著降低(P<0.01),颌下腺组织AQP5、M3R蛋白表达水平明显升高(P<0.05,P<0.01),血清IL-10水平明显升高(P<0.05,P<0.01);益气养阴祛瘀方高剂量组和西药组NOD小鼠的颌下腺指数明显升高(P<0.05);益气养阴祛瘀方中、高剂量组和西药组NOD小鼠颌下腺组织AQP5、M3R mRNA表达明显上调(P<0.05,P<0.01),血清IFN-γ含量显著降低(P<0.01)。结论益气养阴祛瘀方对NOD小鼠唾液腺损伤具有改善作用,可能通过上调AQP5、M3R表达,抑制颌下腺淋巴细胞浸润,改善唾液分泌功能,从而减缓干燥综合征进程。

关键词：益气养阴祛瘀方干燥综合征 NOD小鼠颌下腺水通道蛋白5 毒蕈碱样胆碱能受体3

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：