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Effect of Ti content on the hydrogen storage properties of Zr_(1-x)Ti_xMn_2Ce_(0.015) alloys

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Rare Metals 2010年第6期29卷 589-592页

作者： JI yali,liu Xiaopeng,MI Jing,GUO Xiumei,Li Zhinian,JIANG Lijun,and WANG Shumao Energy Materials and Technology Research Department,General Research Institution for Nonferrous Metals,Beijing 100088,China Energy Materials and Technology Research Department General Research Institution for Nonferrous Metals Beijing China

The effect of Ti content on the hydrogen storage properties of Zr1-xTixMn2 Ce0.015（x = 0,0.2,0.3,0.5） alloys was studied by X-ray diffraction,scanning electron microscopy and pressure-composition（p-c） isotherm *** of the alloys mainly consist of C14-type Laves and CeO2 *** the Ti content increases,the lattice parameters of the Laves phase decrease and the unit cell shrinks anisotropically,the total hydrogen absorption capacity decreases but the reversible hydrogen desorption capacity of the alloys increases,and the equilibrium pressure of the alloys increases but the plateau becomes *** changes of hydrogen storage properties of Zr1-xTixMn2 Ce0.015 alloys are related to the differences in both atomic radius and hydrogen affinity between Ti and Zr elements.

关键词： hydrogen storage alloys hydrogen storage titanium Laves phase

Enhanced expression of antifreeze protein genes drives the development of freeze tolerance in an Antarctica isolate of Chlorella vulgaris

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Progress in Natural Science:Materials International 2009年第9期19卷 1059-1062页

作者： Huiying Li, Xiaoxiang liu, yali Wang, Hanhua Hu, Xudong Xu * State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China

In adaptation to new environments, organisms may accumulate mutations within encoding sequences to modify protein characteristics or acquire mutations within regulatory sequences to alter gene expression levels. With the development of antifreeze capability as the example, this study presents the evidence that change in gene expression level is probably the most important mechanism for adaptive evolution in a green alga Chlorella vulgaris. C. vulgaris NJ-7, an isolate from Antarctica, possesses an 18S rRNA sequence identical to that of a temperate isolate, SAG211-11b/UTEX259, but shows much higher freeze tolerance than the later isolate. The chromosomal DNA/cDNA of four antifreeze genes, namely hiC6, hiC12, rpl10a and hsp70, from the two isolates of C. vulgaris were cloned and sequenced, and very few variations of deduced amino acid sequences were found. In contrast, the transcription of hiC6, hiC12 and rpl10a was greatly intensified in NJ-7 compared to that in UTEX259, which is correlated to the significantly enhanced freeze tolerance of the Antarctica isolate.

关键词： Chlorella vulgaris Antarctica isolate Temperate isolate Freeze tolerance Gene expression

Stimulated Brillouin scattering induced all-optical modulation in graphene microfiber

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Photonics Research 2019年第1期7卷 8-13页

作者： JIWEN ZHU XUEMEI CHENG yali liu RUIDUO WANG MAN JIANG DIAO LI BAOLE LU ZHAOYU REN State Key Lab Incubation Base of Photoelectric Technology and Functional Materials National Photoelectric Technology and Functional Materials& Application International Cooperation Center Institute of Photonics & Photon-Technology Northwest University

Graphene microfibers are burgeoning modulators with great potential in all-optical communication. One of the critical issues that remains to be understood is the dynamic mechanism of light–graphene interaction. Here, we propose a power dependent modulation by using 980 nm pump light and 1064 nm signal light via graphene microfiber, and the results show a strong transmission reduction and frequency blue shift with the increase of pump power. The experimental observation is attributed to a stimulated Brillouin scattering process induced by the pump light. Power and frequency variations are a result of energy transition of the scattered phonon in the fiber. This work reveals the nonlinear effect process in the light–graphene interaction and provides a new method for power and frequency control with graphene all-optical modulation.

关键词： Graphene microfibers burgeoning modulators great potential

社交媒体用户数字囤积行为要素识别与影响路径研究

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情报理论与实践 2023年第7期46卷 87-97页

作者：刘亚丽范逢春四川大学公共管理学院四川成都610065

[目的/意义]分析社交媒体用户数字囤积行为因素之间的影响关系与层级结构,为国内外学者进一步探究社交媒体用户数字囤积行为问题提供价值参考,为社交媒体运营商减少用户数字囤积行为提供干预策略。[方法/过程]基于MOA理论,从动机、机会... 详细信息

[目的/意义]分析社交媒体用户数字囤积行为因素之间的影响关系与层级结构,为国内外学者进一步探究社交媒体用户数字囤积行为问题提供价值参考,为社交媒体运营商减少用户数字囤积行为提供干预策略。[方法/过程]基于MOA理论,从动机、机会和能力3个维度提取要素,结合改进的DEMATEL-ISM-MICMAC对社交媒体用户数字囤积行为的影响因素进行影响程度打分,确定关联路径,划分层级模型,并建立“驱动力—依赖性”结果分析图。[结果/结论]在DEMATEL的计算结果中,其中心度较高和影响度较高的因素与ISM中的根源层因素以及MICMAC中所得出的独立群因素在影响性质上具有一致性,且进一步发现改进的DEMATEL-ISM-MICMAC对社交媒体用户数字囤积行为影响因素之间的识别和内部关联存在交互关系。

关键词：社交媒体用户数字囤积行为影响因素改进的DEMATEL-ISM-MICMAC

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以用户为导向的高校图书馆营销实践与效果

图书馆建设 2010年第3期 105-108页

作者：刘亚立辽宁大学国际关系学院辽宁沈阳110136

高校图书馆为适应环境变化,强化以用户为导向的营销。以用户为导向的营销的核心是为用户创造价值。以用户为导向的高校图书馆营销的要素包括产品、价格、过程、场所、促销、人员。以用户为导向的高校图书馆营销强化了高校图书馆优质信... 详细信息

高校图书馆为适应环境变化,强化以用户为导向的营销。以用户为导向的营销的核心是为用户创造价值。以用户为导向的高校图书馆营销的要素包括产品、价格、过程、场所、促销、人员。以用户为导向的高校图书馆营销强化了高校图书馆优质信息提供者的形象和地位,提高了图书馆读者满意度,增强了高校图书馆的核心竞争力,促进了其经营范式的变革。

关键词：用户导向高校图书馆图书馆建设营销实践

ChatGPT-AIGC用户风险感知维度识别与治理研究——基于扎根理论的探索性分析

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情报理论与实践 2024年第3期47卷 121-129页

作者：刘亚丽范逢春四川大学公共管理学院四川成都610065

[目的/意义]识别ChatGPT-AIGC用户风险感知维度属性,为数字智能时代有效实现风险治理、推动新一代人工智能技术健康可持续发展提供价值参考。[方法/过程]结合已有风险感知维度研究成果,通过面对面访谈和线上访谈收集数据,借鉴扎根理论... 详细信息

[目的/意义]识别ChatGPT-AIGC用户风险感知维度属性,为数字智能时代有效实现风险治理、推动新一代人工智能技术健康可持续发展提供价值参考。[方法/过程]结合已有风险感知维度研究成果,通过面对面访谈和线上访谈收集数据,借鉴扎根理论研究思路对访谈文本进行三级编码,构建ChatGPT-AIGC用户风险感知影响机理APCO模型。[结果/结论]结果发现个人风险感知能力影响用户产生不同的风险感知维度,而用户风险感知维度属性又进一步对使用意愿产生影响。基于此,从技术研发、信息监管、法律监督三方面提出风险治理策略。

关键词：扎根理论 ChatGPT 人工智能生成内容风险感知治理策略

Exploring the multicomponent synergy mechanism of Zuogui Wan(左归丸) on postmenopausal osteoporosis by a systems pharmacology strategy

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Journal of Traditional Chinese Medicine 2024年第3期44卷 489-495页

作者： FENG Yanchen liu yali DANG Xue LIN Zixuan ZHANG Yunke CHE Zhiying LI Xiang PAN Xiaolong liu Feixiang ZHENG Pan Traditional Chinese Medicine(Zhong Jing)School Henan University of Chinese MedicineZhengzhou 450046China Hospital of Encephalopathy the First Affiliated Hospital of Henan University of Chinese MedicineZhengzhou 450000China State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseasesthe First Affiliated HospitalZhejiang University School of MedicineResearch Units of Infectious Disease and MicroecologyChinese Academy of Medical SciencesHangzhou 31000China

OBJECTIVE: To explore the multi-component synergistic mechanism of Zuogui Wan(左归丸, ZGW) in treating postmenopausal osteoporosis(PMOP). METHODS: The main components and target genes of ZGW were screened via the Traditional Chinese Medicine Systems Pharmacology(TCMSP). In addition, the target gene sets of PMOP were derived from the Gene Cards and Online Mendelian Inheritance in Man databases. The search tool for recurring instances of neighbouring genes(STRING) 11.0 software was used to analyze the interaction among intersecting genes. Cytoscape 3.6.1 software and the Matthews correlation coefficient(MCC) algorithm were used to screen the core genes. Fifty Sprague-Dawley female rats were randomly divided into the sham-operated(Sham) group and the four ovariectomized(OVX) subgroups. Rats subjected to Sham or OVX were administered with the vehicle(OVX, 1 m L water/100 g weight), 17β-estradiol(E2, 50 μg·kg-1·d-1), and lyophilized powder of ZGW at a low dose of 2.3(ZGW-L) and high dose of 4.6(ZGW-H) g·kg-1·d-1 for three months. The bone density and bone strength were assessed using dual-energy X-ray and three-point bending tests, respectively. Furthermore, enzyme-linked immunosorbent assay, Hematoxylin-eosin staining, and western blot analysis were used to determine the potential pharmacological mechanisms of action of ZGW in PMOP. RESULTS: A total of 117 active compounds of ZGW were screened from the TCMSP. Furthermore, 108 intersecting genes of drugs and diseases were identified. Using STRING software and the MCC algorithm, ten core genes, including C-X-C chemokine living 8(CXCL8), C-C chemokine receptor type 2(CCR2), alpha-2a active receptor(ADRA2A), melatonin receptor type 1B(MTNR1B), and amyloid-beta A4 protein(APP), were identified. The anti-osteoporosis regulation network of ZGW was constructed using the Cytoscape software. The animal experiments demonstrated that ZGW groups significantly reduced the serum levels of β-C-terminal telopeptide of type I collagen(β-CTX

关键词： osteoporosis postmenopausal network pharmacology Zuogui Wan

溶剂介导吡咯并[1,2-a]喹喔啉选择性C—H键碘代

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有机化学 2021年第12期41卷 4789-4797页

作者：刘亚丽杨振李阳刘岩刘平石河子大学化学化工学院化工绿色过程兵团重点实验室新疆石河子832003

开发了一种溶剂介导吡咯并[1,2-a]喹喔啉和N-碘代丁二酰亚胺(NIS)的区域选择性C—H碘化,分别以CHCl;和N,N-二甲基甲酰胺(DMF)为溶剂,选择性地生成了1-碘吡咯并[1,2-a]喹喔啉和3-碘吡咯并[1,2-a]喹喔啉.此外,吡咯并[1,2-a]喹喔啉与N-溴... 详细信息

开发了一种溶剂介导吡咯并[1,2-a]喹喔啉和N-碘代丁二酰亚胺(NIS)的区域选择性C—H碘化,分别以CHCl;和N,N-二甲基甲酰胺(DMF)为溶剂,选择性地生成了1-碘吡咯并[1,2-a]喹喔啉和3-碘吡咯并[1,2-a]喹喔啉.此外,吡咯并[1,2-a]喹喔啉与N-溴代丁二酰亚胺(NBS)的溴代反应得到主要产物为1,3-二溴吡咯并喹喔啉.该方法具有反应条件简单温和、区域选择性好、底物范围广、克级合成等特点.此外,还通过钯和碘催化的C—X (X=C, S)键形成反应研究了卤化吡咯并[1,2-a]喹喔啉产物的进一步转化.

关键词：溶剂介导区域选择性吡咯并[1,2-a]喹喔啉 C—H键碘代

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断陷盆地连续型油气藏分布范围的确定方法——以渤南地区沙四段为例

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油气地质与采收率 2015年第2期22卷 1-8页

作者：刘雅利中国石化胜利油田分公司地质科学研究院山东东营257015

连续型油气藏是一种重要的油气藏类型,确定该类油气藏的分布范围,对勘探部署具有重要的意义.在中外连续型油气藏特征分析的基础上,结合渤南地区的实际地质条件,明确了沙四段油气连续聚集的特征,并通过连续型油气藏形成机理分析,提出该... 详细信息

连续型油气藏是一种重要的油气藏类型,确定该类油气藏的分布范围,对勘探部署具有重要的意义.在中外连续型油气藏特征分析的基础上,结合渤南地区的实际地质条件,明确了沙四段油气连续聚集的特征,并通过连续型油气藏形成机理分析,提出该类油气藏分布范围的确定方法.结果表明：广泛分布的优质烃源岩、高生烃压力、连续分布的致密储层,是连续型油气藏的主要特征;渤南地区沙四段具备连续型油气藏的形成条件,盆地中心一斜坡油气藏为连续型油气藏.连续型油气藏的形成是“源岩排烃卸压、储层压力重建”的过程,生烃压力一毛管阻力关系决定了油气可注入储层的物性下限;连续油柱两端压力差、油柱浮力与油柱顶端毛管力的关系,决定了油气分布的储层物性上限.根据这一认识提出连续型油气藏物性上、下限的计算方法,计算渤南地区沙四段连续油气分布的孔隙度为2%-11%.计算结果的准确性受压力、孔隙度、阻力等可定量化程度的影响,会存在一定误差,随着各影响因素定量化模型的细化,计算结果将会更接近实际地质情况.

关键词：连续型油藏成藏机理分布范围确定方法渤南地区