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Experimental investigation of laser surface processing of flexure silicon nitride ceramic

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中国有色金属学会会刊：英文版 2006年第B02期16卷 558-565页

作者： SUN Li A. P. MALSHE jiang wen-ping P. H. MCCLUSKEY Department of Mechanical Engineering University of Arkansas Fayetteville AR 72701 USA Technology ＆ Solutions Division Caterpillar Inc. Peoria IL 61629 USA

A continuous wave carbon dioxide (CO2) laser (λ=10.6μm) was employed to treat the surface of Si3N4 MOR (modulus of rupture) bars. The effects of the CO2 laser process on physical and mechanical properties of ground Si3N4 samples were investigated. Scanning electron microscopy (SEM) analysis shows that the area occupied by cavities and fracture is decreased by about 49.4% after laser treatments. Cross-sectional metallography results indicate that the secondary YSiAlON phase in the Si3N4 ceramic is softened/melted and flowed into the defects. Four-point bending tests show that the flexural strength of the treated samples is improved to 10.9%. Fractographic analysis show that the fracture origins move from the surface to subsurface. It is concluded that laser surface processing have significant effects on fracture behavior of flexure Si3N4 ceramic.

关键词：氮化硅陶瓷激光表面处理实验研究挠曲强度物理性质

Subacute coronary stent thrombosis in a patient with angina treated with double antiplatelet drugs for six days

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Chinese Medical Journal 2009年第19期122卷 2394-2395页

作者： XUE Feng YANG Xiang-jun CHENG Xu-jie jiang Ting-bo CHEN Tan LIU Zhi-hua SONG Jian-ping jiang wen-ping Department of Cardiology First Affiliated Hospital of Soochow University Suzhou Jiangsu 215006 China

Stent implantation has been a great advance in percutaneous coronary intervention （PCI）, decreasing the frequency of acute closure and restenosis. But stent thrombosis is a severe complication of this therapy regardless of the stent type： bare-metal stent （BMS） and drug-eluting stent （DES）. According to the timing after initial PCI, stent thrombosis is considered as acute when occurring between 0 hour and 24 hours after stent implantation, subacute between 24 hours and 30 days,

关键词： stent thrombosis clopidogrel resistance platelet function assay

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地面煤层气抽采效果评价指标初探

资源与产业 2010年第5期12卷 61-67页

作者：降文萍煤炭科学研究总院西安研究院地质所陕西西安710054

地面煤层气抽采是煤层气开发普遍采用的方式,主要以地面垂直井方式为主。建立地面煤层气抽采效果评价指标,有利于同一地区不同地面煤层气井、不同地区的抽采效果比较,也可为国内外抽采效果评价、不同抽采工艺效果比较提供参考手段。目... 详细信息

地面煤层气抽采是煤层气开发普遍采用的方式,主要以地面垂直井方式为主。建立地面煤层气抽采效果评价指标,有利于同一地区不同地面煤层气井、不同地区的抽采效果比较,也可为国内外抽采效果评价、不同抽采工艺效果比较提供参考手段。目前国内外地面煤层气抽采效果的评价及指标还不完善。本文通过收集晋城成庄区块主要煤层的储层参数和生产数据,采用新型储层模拟软件CBM-SIM进行不同井间距的产能预测,由此探讨地面煤层气抽采效果的有效评价指标。研究表明,评价指标可分为两类:一类是储层特征,主要包括气含量和储层压力;一类是煤层气资源特征,主要包括累计产气量、采收率、日最高产气量、稳产期日均产气量。

关键词：煤层气地面抽采储层模拟评价指标

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谨慎对待心律失常的药物治疗

中华心血管病杂志 2009年第2期37卷 97-98页

作者：蒋文平苏州大学附属第一医院心内科江苏苏州215006

应用抗心律失常药物仍是心律失常的基本治疗，但药物治疗带来的不都是益处。因此什么情况应该用药物？选用何种药物？什么情况不需用药物？应谨慎地对待。

关键词：抗心律失常药物药物治疗用药物

突出煤层工作面合理通风量与煤层瓦斯区域性预抽模拟研究

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煤炭技术 2014年第9期33卷 67-70页

作者：江文平神华宁夏煤业集团金能煤业分公司宁夏石嘴山753200

根据3132工作面布局及区域瓦斯赋存情况,构建了工作面采空区瓦斯分布特征的数值计算模型,研究了3132工作面不同初始配风量下采空区瓦斯分布演化特征,得出工作面通风量设为1 200 m3/min较合适。

关键词：瓦斯涌出量瓦斯预抽数值模拟

Mutation of Arg723Gly in β-myosin heavy chain gene in five Chinese families with hypertrophic cardiomyopathy

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Chinese Medical Journal 2006年第21期119卷 1785-1789页

作者： YANG Jun-hua ZHENG Dong-dong DONG Ning-zheng YANG Xiang-jun SONG Jian-ping jiang Ting-bo CHENG Xu-jie LI Hong-xia ZHOU Bing-yuan ZHAO Cai-ming jiang wen-ping Department of Cardiology First Affiliated Hospital of Soochow University Suzhou 215006 China Department of Cardiology People＇s Hospital of Shanxi Province Taiyuan 030012 China jiangsu Institute of Hematology Soochow University Suzhou 215006 China

Background Hypertrophic cardiomyopathy （HCM） is a form of cardiomyopathy with an autosomal dominant inherited disease, which is caused by mutations in at least one of the sarcomeric protein genes. Mutations in the beta-myosin heavy chain （β-MHC） are the most common cause of HCM. This study was to reveal the disease-causing gene mutations in Chinese population with HCM, and to analyze the correlation between the genotype and phenotype. Methods The exons 3 to 26 of MYH7 were amplified by PCR, and the PCR products were sequenced in five non-kin HCM patients. A 17-year-old patient was detected to be an Arg723Gly mutation carrier. Then his family was gene-screened, and the correlation between genotype and phenotype was analyzed. Results The mutation of Arg723Gly in a Chinese family with HCM was detected for the first time. With a C-G transversion in nucleotide 13 619 of the MYH7 gene, located at the essential light chain interacting region in S1, the replacement of arginine by glycine took place at amino acid residue 723. A two-dimensional echocardiogram showed moderate asymmetrical septal hypertrophy with left atria enlargement. There was no obstruction in the left ventricular outflow tract. In his family, a total of 13 individuals were diagnosed HCM and 5 of them were dead of congestive heart failure at a mean age of 66-year-old. Eight living members were all detected to carry the mutation, in which 3 developed progressive heart failure. Moreover, the heart function of the people evidently deteriorates when their age are older than 50. The mutation and the disease show co-separated. Conclusion The Arg723Gly mutation is a malignant type. In Chinese the mutation has the similar characters to the former report but has low degree malignant.

关键词： cardiomyopathy, hypertrophic, familial myosin heavy chain mutation genotype phenotype

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3维地图模型的若干研究

测绘通报 2007年第1期 36-39页

作者：江文萍奚大平武汉大学资源与环境科学学院湖北武汉430079 中国地质大学信息工程学院湖北武汉430074

重点阐述3维地图模型的概念与特性,深入研究3维地图模型的内容与逻辑组成,并在此基础上对3维地图的创建与可视化进行探讨。

关键词：虚拟现实地图 3维地图模型符号化可视化

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构造煤孔隙结构对煤层气产气特征的影响

天然气地球科学 2016年第1期27卷 173-179页

作者：降文萍张群姜在炳韩保山中煤科工集团西安研究院有限公司陕西西安710054

采用压汞实验和低温液氮吸附实验分析了构造煤的孔隙结构特征,结合地面煤层气抽采试验,探讨了孔隙对煤层气产气特征的影响。论文将煤中孔隙划分为4种类型：吸附孔隙（孔径小于10nm）、游离孔隙（孔径10-100nm）、扩散孔隙（孔径100-1 00... 详细信息

采用压汞实验和低温液氮吸附实验分析了构造煤的孔隙结构特征,结合地面煤层气抽采试验,探讨了孔隙对煤层气产气特征的影响。论文将煤中孔隙划分为4种类型：吸附孔隙（孔径小于10nm）、游离孔隙（孔径10-100nm）、扩散孔隙（孔径100-1 000nm）和渗流孔隙（孔径大于1 000nm）。研究发现构造煤孔隙系统呈＂两极化＂分布,即吸附孔隙、游离孔隙、渗流孔隙居多,扩散孔隙少;孔隙类型主要以圆筒形孔、墨水瓶形孔和狭缝平板形为主。构造煤的孔隙系统决定了煤中气体储集量大、但产出运移通道不畅,由此导致地面煤层气井排采过程中的波动产气特征。

关键词：构造煤煤层气孔隙压汞实验低温液氮吸附煤层气产气特征

基于多重迁移学习的Yolo V5初期火灾探测研究

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消防科学与技术 2021年第1期40卷 109-112页

作者：蒋文萍蒋珍存上海应用技术大学电气与电子工程学院上海201418

火灾发生初期是灭火的最佳时期,故对于初期火灾的探测具有十分重要的意义。初期火灾的火焰面积较小,数据样本较少,传统的机器学习目标检测方法难以对其进行有效的训练。针对以上问题,提出图像型初期火灾探测系统,并对基于多重迁移学习... 详细信息

火灾发生初期是灭火的最佳时期,故对于初期火灾的探测具有十分重要的意义。初期火灾的火焰面积较小,数据样本较少,传统的机器学习目标检测方法难以对其进行有效的训练。针对以上问题,提出图像型初期火灾探测系统,并对基于多重迁移学习训练得到的Yolo V5初期火灾探测模型进行重点研究。试验结果表明,该模型精确率达到97%,对初期火灾的探测精度高、探测速度快,可以快速准确地探测到初期火灾的发生。

关键词：初期火灾火灾探测目标检测 Yolo V5 迁移学习计算机视觉