检索结果-南通市图书馆

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试谈高校图书馆对捐赠图书的管理与利用

图书馆 1997年第3期 54-55页

作者：刘海萍长沙大学图书馆

本文归纳了捐赠图书者的几个方面，说明了捐赠图书的作用，并指出目前在管理方面所存在的问题和应采取的措施

关键词：院校图书馆赠书管理利用藏书建设

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数字化时代图书馆员人文精神及其重塑

图书馆 2004年第4期 38-41页

作者：刘海萍长沙大学图书馆湖南长沙410003

人文精神在不同的时代有不同的内涵 ,数字化时代图书馆的人文精神是需要充分彰显的时代 ,而这个时代下的图书馆员的人文精神则是以科学的人文精神来体现的。本文以数字化时代对图书馆的影响。

关键词：数字化图书馆馆员素质人文精神

Ⅰ EXPERIMENTAL MEASUREMENT——Measurement of Neutron Multiplication in Pb by Mn Foils

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中国核科技报告 1994年第S3期 7-13页

作者： Chen Yuan liu Rong Guo haiping Jiang Wenmian Shen Jian( Southwest Institute of Nuclear Physics and Chemistry, Chengdu )

The Leakage neutron multiplication in bulk lead has been measured using the total absorption detector and relative *** polyethylene sphere of 138 cm in diameter is used as the moderator and total absorption *** measured results fromMn foils and ~6Li glass are *** neutron multiplication is 1.74 with the lead shell of 23.1 cm *** measured result is consistent with the calculated one with ANISN code and ENDF/B-6 evaluated data within the experimental error.

关键词： ENDF Measurement of Neutron Multiplication in Pb by Mn Foils EXPERIMENTAL MEASUREMENT Mn TAD Pb

THE CORROSION RESISTANCE OF AN Al-Li ALLOY IN 3.5 wt.-%NaCl

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Transactions of Nonferrous Metals Society of China 1992年第1期2卷 33-42页

作者： liu haiping Yan Yumin Yuan Guansen General Research Institute for Non-ferrous Metals Beijing100088China

The influences of heal treatment and pH value on corrosion potential and cyclic polarization curve or an Al-Li alloy in 3.5 wt.-%NaCl were *** of the alloy were combined to analyze and explain the development of cyclic polarization curves and the variation of corrosion potential within 24 *** results revealed that the preferential dissolution of the precipitates in the alloy increased the susceptibility of the alloy to localized *** artificial ageing treatment caused heavy precipitation of T1 phase in matrix and both precipitation of phases containing copper and widening of PFZ along the grain boundary,and thus worsened the corrosion resistance.

关键词： Al-Li alloy Corrosion polarization pitting passivation

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含中间质量改进三参数隔振器动力学特性研究

湖南大学学报（自然科学版） 2022年第8期49卷 72-81页

作者：朱冬梅肖凯莉刘海平北京科技大学机械工程学院北京100083

通过在含X形机构非线性三参数隔振器中引入中间质量,提出一种改进三参数隔振器并建立其理论模型.采用谐波平衡法得到隔振系统的稳态解析解,利用四阶龙格库塔法和多体动力学软件ADAMS验证其正确性.将力传递率作为评价隔振系统动态性能的... 详细信息

通过在含X形机构非线性三参数隔振器中引入中间质量,提出一种改进三参数隔振器并建立其理论模型.采用谐波平衡法得到隔振系统的稳态解析解,利用四阶龙格库塔法和多体动力学软件ADAMS验证其正确性.将力传递率作为评价隔振系统动态性能的技术指标,与传统三参数隔振器以及含X形机构非线性三参数隔振器进行对比,结合工程实际,分别给出3种类型隔振器在多频稳态激励下的时域位移响应,并进行对比研究.分析了该隔振系统的功率流特性以及能量特征,选择隔振系统部分关键设计参数进行影响因素分析.从动力吸振器的角度,讨论了所提模型中非线性连接方式对其减隔振效果的影响.计算结果表明,合理选择中间质量可以在原隔振系统谐振频率附近形成一个反共振低谷,且系统固有频率向低频移动,使隔振系统有效隔振频带变宽;相比于传统三参数隔振器和含X形机构非线性隔振器,隔振系统在低频和高频的隔振性能均得到有效提升;通过力传递率评估设计参数,结果表明各参数均存在最优值;将线性动力吸振器与接地X形机构连接,可进一步改善其减隔振效果.

关键词：非线性分析隔振器谐波平衡法中间质量动力学分析

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Factors Influencing the Sulfidation Rate of Fe-Mo Binary Alloys

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International Journal of Minerals,Metallurgy and Materials 1997年第4期11卷 39-42页

作者： liu haiping QI Huibin HAO Chanshan WANG Xiaohong HE Yedong ZHU Rizhang(Materials Science and Engineering School, USTB, Beijing 100083,China) (Beijing Institute of Aeronautical Materials)

The sulfidation rate constants of various Fe-Mo binary alloys in S2 vapor with different sulfidation parameters were collected to summarize the correlation between the sulfidation rate and alloy composition, sulfur pressure and sulfldation temperature. The octivation energies indicate that the sulfidation process of the alloys is exclusively controlled, at a given temperature, by one alloying component i.e. either Mo or Fe. The sulfidation rate declines exponentially with the increasing of Mo content in alloy. And the influence of sulfur pressure is relatively slight.

关键词： Fe-Mo alloy sulfidation kinetics

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含X形机构的惯容型隔振器动态特性研究

华中科技大学学报（自然科学版） 2022年第1期50卷 119-124页

作者：刘海平肖凯莉朱冬梅北京科技大学机械工程学院北京100083

将惯容器引入到含X形机构的几何非线性隔振器,提出一种含X形机构的惯容型隔振器.按照惯容器不同安装方式分别建立隔振系统动力学模型.利用谐波平衡法获得隔振系统的稳态解析解,并采用四阶龙格库塔法计算得到其时域响应以验证解析解的有... 详细信息

将惯容器引入到含X形机构的几何非线性隔振器,提出一种含X形机构的惯容型隔振器.按照惯容器不同安装方式分别建立隔振系统动力学模型.利用谐波平衡法获得隔振系统的稳态解析解,并采用四阶龙格库塔法计算得到其时域响应以验证解析解的有效性.在此基础上,将力传递率作为隔振性能的评价指标,开展关键设计参数影响分析.计算结果表明:惯容器使隔振系统产生一个反共振频率,当激励频率处于反共振频率附近时,系统的隔振效果最好,从而获得更好的低频隔振性能.

关键词： X形机构力传递率惯容器谐波平衡法几何非线性

室温固化柔性环氧树脂固化剂的制备与性能研究

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化工新型材料 2008年第7期36卷 80-82页

作者：张小博刘海萍北京化工大学北方学院三河065201 三河市金贝金刚石应用技术有限公司三河065201

通过聚醚多元醇和甲基丙烯酸甲酯进行酯交换反应,然后利用多元胺与烯双键的加成改性,将多乙烯多胺与甲基丙烯酸酯反应,合成了含甲基丙烯酸聚醚多元醇酯柔性基团的新型环氧树脂室温固化剂。通过IR等方法对产物进行了表征,探讨优化了各种... 详细信息

通过聚醚多元醇和甲基丙烯酸甲酯进行酯交换反应,然后利用多元胺与烯双键的加成改性,将多乙烯多胺与甲基丙烯酸酯反应,合成了含甲基丙烯酸聚醚多元醇酯柔性基团的新型环氧树脂室温固化剂。通过IR等方法对产物进行了表征,探讨优化了各种反应条件,并考察了其对环氧树脂性能的影响。

关键词：酯交换多乙烯多胺固化剂环氧树脂固化性能

A matrix metalloproteinase-responsive hydrogel system controls angiogenic peptide release for repair of cerebral ischemia/reperfusion injury

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Neural Regeneration Research 2025年第2期20卷 503-517页

作者： Qi liu Jianye Xie Runxue Zhou Jin Deng Weihong Nie Shuwei Sun haiping Wang Chunying Shi Department of Human Anatomy Histology and EmbryologySchool of Basic MedicineQingdao UniversityQingdaoShandong ProvinceChina Department of Neurology The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina Department of General Practice The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina

Vascular endothelial growth factor and its mimic peptide KLTWQELYQLKYKGI(QK)are widely used as the most potent angiogenic factors for the treatment of multiple ischemic ***,conventional topical drug delivery often results in a burst release of the drug,leading to transient retention(inefficacy)and undesirable diffusion(toxicity)in ***,a drug delivery system that responds to changes in the microenvironment of tissue regeneration and controls vascular endothelial growth factor release is crucial to improve the treatment of ischemic *** metalloproteinase-2(MMP-2)is gradually upregulated after cerebral ***,vascular endothelial growth factor mimic peptide QK was self-assembled with MMP-2-cleaved peptide PLGLAG(TIMP)and customizable peptide amphiphilic(PA)molecules to construct nanofiber hydrogel ***-TIMP-QK was found to control the delivery of QK by MMP-2 upregulation after cerebral ischemia/reperfusion and had a similar biological activity with vascular endothelial growth factor in *** results indicated that PA-TIMP-QK promoted neuronal survival,restored local blood circulation,reduced blood-brain barrier permeability,and restored motor *** findings suggest that the self-assembling nanofiber hydrogel PA-TIMP-QK may provide an intelligent drug delivery system that responds to the microenvironment and promotes regeneration and repair after cerebral ischemia/reperfusion injury.

关键词： angiogenesis biomaterial blood-brain barrier cerebral ischemia/reperfusion injury control release drug delivery inflammation QK peptides matrix metalloproteinase-2 neuroprotection self-assembling nanofiber hydrogel