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Strong motion observations and recordings from the great Wenchuan Earthquake

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Earthquake Engineering and Engineering Vibration 2008年第3期7卷 235-246页

作者： Li Xiaojun Zhou Zhenghua yu haiyin Wen Ruizhi Lu Dawei Huang Moh Zhou Yongnian Cu Jianwen Institute of Engineering Mechanics China Earthquake Administration Harbin 150080 China National Earthquake Infrastructure Service Beijing China California Geological Survey Sacramento USA yunnan Provincial Earthquake Administration Kunming China

The National Strong Motion Observation Network System （NSMONS） of China is briefly introduced in this paper. The NSMONS consists of permanent free-field stations, special observation arrays, mobile observatories and a network management system. During the Wenchuan Earthquake, over 1,400 components of acceleration records were obtained from 460 permanent free-field stations and three arrays for topographical effect and structural response observation in the network system from the main shock, and over 20,000 components of acceleration records from strong aftershocks occurred before August 1, 2008 were also obtained by permanent free-field stations of the NSMONS and 59 mobile instruments quickly deployed after the main shock. The strong motion recordings from the main shock and strong aftershocks are summarized in this paper. In the ground motion recordings, there are over 560 components with peak ground acceleration （PGA） over 10 Gal, the largest being 957.7 Gal. The largest PGA recorded during the aftershock exceeds 300 Gal.

关键词： Wenchuan Earthquake strong motion observation network mobile observation observation array strong motion record PGA

聚丙烯膜表面磷脂自组装／交联改性及其表面性能

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化工学报 2013年第2期64卷 663-670页

作者：王亮宇海银何桂金黄小军安徽师范大学化学与材料科学学院安徽芜湖241000 浙江大学高分子科学与工程学系化学工程联合国家重点实验室高分子合成与功能构造教育部重点实验室浙江杭州310027

发展了一种基于分子自组装/交联的聚丙烯微孔膜(PPMM)表面改性方法,以含不饱和长烷基链的两亲性天然卵磷脂为改性剂,首先通过分子自组装在PPMM表面形成类磷脂组装层,再采用紫外线原位聚合交联方法在PPMM表面构建稳定的类磷脂仿生修饰层... 详细信息

发展了一种基于分子自组装/交联的聚丙烯微孔膜(PPMM)表面改性方法,以含不饱和长烷基链的两亲性天然卵磷脂为改性剂,首先通过分子自组装在PPMM表面形成类磷脂组装层,再采用紫外线原位聚合交联方法在PPMM表面构建稳定的类磷脂仿生修饰层,进而赋予PPMM表面优异的亲水性和生物相容性。分别采用FTIR/ATR和XPS分析确证了改性前后膜表面基团及化学成分的变化。通过水接触角测定、荧光标记蛋白质吸附和酶联免疫吸附(ELISA)实验,考察了类磷脂仿生修饰前后膜表面亲水性和抗蛋白质吸附性能,发现类磷脂仿生修饰后PPMM表面水接触角由130°下降至30°,抗蛋白质吸附性能也得到明显改善;自组装/交联改性PPMM经多次水洗后仍能保持良好的亲水性和抗蛋白质吸附性能,表明膜表面所形成的类磷脂仿生修饰层具有良好的稳定性。

关键词：聚丙烯微孔膜卵磷脂自组装紫外交联生物相容性

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对新时期高校校园文化建设的思考

河北科技师范学院学报（社会科学版） 2008年第4期7卷 88-91页

作者：于海印赵娟河北科技师范学院团委河北秦皇岛066004 河北科技师范学院图书馆河北秦皇岛066004

高校校园文化建设对于大学生的全面成长、成才具有重要的意义,但新时期带来了许多新情况和新问题,解决好这些问题,需要从校园文化建设的组织运作和活动内容与目标重新定位、创新等方面入手,进一步加强高校校园文化建设。论文从校园文化... 详细信息

高校校园文化建设对于大学生的全面成长、成才具有重要的意义,但新时期带来了许多新情况和新问题,解决好这些问题,需要从校园文化建设的组织运作和活动内容与目标重新定位、创新等方面入手,进一步加强高校校园文化建设。论文从校园文化建设的必要性和重要性出发,对高校校园文化现状进行分析,对新时期校园文化建设的具体措施进行了深入探讨。针对大学生自身情况,以全面教育作为校园文化建设的主要内容和目标,并以此为核心,设计了校园文化活动体系,创建了以月份为单位的校园文化框架。为高校大学生校园文化建设提供了可供参考的意见和建议。

关键词：新时期高校校园文化思考

针灸促进脊髓损伤后细胞增殖和分化的研究进展

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针灸临床杂志 2024年第9期40卷 96-101页

作者：于海银李晓宁黑龙江中医药大学黑龙江哈尔滨150040 黑龙江中医药大学附属第二医院黑龙江哈尔滨150001

脊髓损伤后神经缺损的有效修复仍然是临床治疗的挑战。随着干细胞和再生医学的发展,目前常用的脊髓损伤细胞治疗包括促进内源性干细胞分化、神经干细胞、嗅鞘细胞以及雪旺细胞等移植治疗。然而,不同细胞来源的干细胞均存在各自的局限性... 详细信息

脊髓损伤后神经缺损的有效修复仍然是临床治疗的挑战。随着干细胞和再生医学的发展,目前常用的脊髓损伤细胞治疗包括促进内源性干细胞分化、神经干细胞、嗅鞘细胞以及雪旺细胞等移植治疗。然而,不同细胞来源的干细胞均存在各自的局限性,而联合应用针灸治疗能够直接调控内源性神经干细胞的增殖和分化、促进外源性移植细胞的存活和向损伤局部的迁移、促进轴突再生以及修复脊髓继发性损伤的微环境。在后续研究中应围绕参数标准化、再生精准化和方案制度化,推动针灸联合细胞移植方法在脊髓损伤诊疗方案中的应用。

关键词：脊髓损伤针灸研究进展

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浅谈大学生创新素质教育的对策

廊坊师范学院学报（自然科学版） 2002年第3期6卷 15-16页

作者：郝慧凤吴子国于海印河北职业技术学院河北廊坊065505 河北职业技术师范学院河北昌黎066600

本文以大学生的创新思维和能力培养为主题 ,从转变教育思想、改革课程体系、营造校园文化氛围系等方面进行论述 ,分析当前存在的问题。

关键词：大学生素质教育

Stability analysis of long hydrodynamic journal bearings based on the journal center trajectory

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Friction 2021年第6期9卷 1776-1783页

作者： yu HUANG haiyin CAO Zhuxin TIAN State Key Lab of Digital Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Mechanical Engineering Hubei University of Arts and ScienceXiangyang 441053China

In this study,we observe that there are two threshold speeds(stability threshold speed and second threshold speed)for the long journal bearing,which is different for the short *** the rotating speed is below the stability threshold speed,the stability boundary nearly coincides with the clearance circle,and the journal center gradually returns to the equilibrium point after being released at an initial *** the rotating speed is between the stability threshold speed and the second threshold speed,after being released at an initial point,the journal center converges to a contour containing the equilibrium *** this situation,for a higher rotating speed,the corresponding contour is also *** the rotating speed exceeds the second threshold speed,the journal gradually moves towards the bearing surface after being released at an initial point.

关键词： long journal bearings stability threshold speed stability boundary journal center trajectory

System error iterative identification for underwater positioning based on spectral clustering

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Journal of Systems Engineering and Electronics 2024年第4期35卷 1028-1041页

作者： LU yu WANG Jiongqi HE Zhangming ZHOU haiyin XING Yao ZHOU Xuanying College of Sciences National University of Defense TechnologyChangsha 410073China

The observation error model of the underwater acous-tic positioning system is an important factor to influence the positioning accuracy of the underwater *** the position inconsistency error caused by considering the underwater tar-get as a mass point,as well as the observation system error,the traditional error model best estimation trajectory(EMBET)with little observed data and too many parameters can lead to the ill-condition of the parameter *** this paper,a multi-station fusion system error model based on the optimal polynomial con-straint is constructed,and the corresponding observation sys-tem error identification based on improved spectral clustering is ***,the reduced parameter unified modeling for the underwater target position parameters and the system error is achieved through the polynomial *** a multi-sta-tion non-oriented graph network is established,which can address the problem of the inaccurate identification for the sys-tem ***,the similarity matrix of the spectral cluster-ing is improved,and the iterative identification for the system errors based on the improved spectral clustering is ***,the comprehensive measured data of long baseline lake test and sea test show that the proposed method can accu-rately identify the system errors,and moreover can improve the positioning accuracy for the underwater target positioning.

关键词： acoustic positioning reduced parameter system error identification improved spectral clustering accuracy analy-sis

A novel approach for synthesis of expanded graphite and its enhanced lithium storage properties

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Journal of Energy Chemistry 2021年第8期30卷 292-298,I0007页

作者： Xianghong Chen Feng Xiao yu Lei haiyin Lu Jiakui Zhang Min Yan Jiantie Xu Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control National Engineering Laboratory for VOCs Pollution Control Technology and EquipmentSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510640China

Relying on the great success in portable and smart devices,lithium ion batteries(LIBs)have been considered as one of the leading technologies in electric vehicles(EVs)and stationary energy storage systems(ESSs).With the rapid development of EVs and ESSs,the technology upgrading of LIBs is highly *** expected,it requires LIBs with improved power and energy densities[1].

关键词： Expanded graphite Holey Anodes Lithium ion batteries Rate capability

Amino acid variation analysis of surface spike glycoprotein at 614 in SARS-CoV-2 strains

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Genes & Diseases 2020年第4期7卷 567-577页

作者： Canhui Cao Liang Huang Kui Liu Ke Ma yuan Tian yu Qin haiyin Sun Wencheng Ding Lingli Gui Peng Wu Cancer Biology Research Center(Key Laboratory of the Ministry of Education) Tongji Medical CollegeTongji HospitalHuazhong University of Science and TechnologyWuhanChina Department of Hematology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Respiratory and Critical Care Medicine Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Infectious Diseases Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Gynecologic Oncology Tongji HospitalTongji Medical CollegeHuazhongChina Department of Anesthesiology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina

As severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)continues to disperse globally with worrisome speed,identifying amino acid variations in the virus could help to understand the characteristics of ***,we studied 489 SARS-CoV-2 genomes obtained from 32 countries from the Nextstrain database and performed phylogenetic tree analysis by clade,country,and genotype of the surface spike glycoprotein(S protein)at site *** found that virus strains from China's Mainland were mostly distributed in Clade B and Clade undefined in the phylogenetic tree,with very few found in Clade *** contrast,Clades A2(one case)and A2a(112 cases)predominantly contained strains from European ***,Clades A2 and A2a differed significantly from those of China's Mainland in age of infected population(P Z 0.0071,mean age 40.24 to 46.66),although such differences did not exist between the US and China's *** analysis demonstrated that the variation of the Sprotein at site 614(QHD43416.1:p.614D>G)was a characteristic of stains in Clades A2 and ***,this variation was predicted to have neutral or benign effects on the function of the S *** addition,global quality estimates and 3D protein structures tended to be different between the two S *** summary,we identified different genomic epidemiology among SARS-CoV-2 strains in different clades,especially in an amino acid variation of the S protein at 614,revealing potential viral genome divergence in SARS-CoV-2 strains.

关键词： ACE2 COVID-19 Phylogenetic tree SARS-CoV-2 Surface spike glycoprotein