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The difference of the ionomer–catalyst interfaces for poly(aryl piperidinium)hydroxide exchange membrane fuel cells and proton exchange membrane fuel cells

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Nano Research 2024年第7期17卷 6102-6110页

作者： Xuerui liu Xingdong Wang Chanyu Zhang Yun Cai Bowen Chen Dongyue Xin Xiaoxiao Jin Wei Zhu Klaus Wippermann Hui Li ruiyu Li Zhongbin Zhuang Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China State Key Lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Research Institute of Petroleum Processing SINOPECBeijing 100083China DeepHytec Co. Ltd.Shenzhen 518118China Institute of Energy and Climate Research(IEK-14) Forschungszentrum Jülich GmbHJülich 52425Germany Beijing Key Laboratory of Energy Environmental Catalysis Beijing University of Chemical TechnologyBeijing 100029China

The microstructures of the ionomer–catalyst interfaces in the catalyst layers are important for the fuel cell performance because they determine the distribution of the active triple-phase ***,we investigate the ionomer–catalyst interactions in hydroxide exchange membrane fuel cells(HEMFCs)using poly(aryl piperidinium)and compare them with proton exchange membrane fuel cells(PEMFCs).It is found that different catalyst layer microstructures are between the two types of fuel *** ionomer/carbon(I/C)ratio does not have a remarkable impact on the HEMFC performance,while it has a strong impact on the PEMFC performance,indicating the weaker interaction between the HEMFC ionomer and *** dynamics simulations demonstrate that the HEMFC ionomer tends to distribute on the carbon support,unlike the PEMFC ionomer,which heavily covers the Pt *** results suggest that the poisoning effect of the ionomer on the catalyst is much weaker in HEMFCs,and the improved ionomer/catalyst interaction is beneficial for the HEMFC performances.

关键词： hydroxide exchange membrane fuel cells catalysts ionomer oxygen reduction reaction interfaces

The quality control and hypoglycemic effect of Cinnamomi Cortex aqueous extract

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Journal of Future Foods 2024年第2期4卷 167-172页

作者： Xuting Hao Ziheng Jin ruiyu Gao Shiming Li Changqin Li Lijun liu Jinmei Wang National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Key Laboratory of Natural Pigment Preparation of Henan Province Luohe 462600China Department of Food Science Rutgers University New BrunswickNJ 08901USA Joint International Research Laboratory of Food&Medicine Resource Function of Henan Province Kaifeng 475004China Huaihe Hospital of Henan University Kaifeng 475000China

Cinnamomi Cortex was a material as medicinal and edible resources and it has been demonstrated that Cinnamomi Cortex aqueous extract(CCAE)possess hypoglycemic effect,but there were no active compounds identified as quality standard of CCAE to be used in the investigate of hypoglycemic ***,in this study,the quality standard and the hypoglycemic effect of CCAE were *** and coumarin as the quality control in CCAE were analyzed by high performance liquid chromatography(HPLC)*** results showed that the average yield of extraction was 10.06%.The concentration of coumarin was linear with peak area ranging from 0.02–1.00μg/mL(r=0.9996,n=6)and that of cinnamaldehyde also demonstrated a good linear relationship with peak area in the range of 1.05–52.50μg/mL(r=0.9997,n=6).The average recovery rate of coumarin and cinnamaldehyde was 99.42%and 100.11%,*** investigation of hypoglycemic effect revealed that CCAE could improve weight loss,lower liver and pancreas indices,improve organ damage caused by diabetes,and lower fasting blood glucose,glycosylated serum protein(GSP)and total cholesterol(TC)*** results showed that CCAE can reduce fasting blood glucose and blood lipid levels in diabetic mice.

关键词： Cinnamomi Cortex Cinnamaldehyde Coumarin Hypoglycemic effect

区间时间序列向量自回归模型在短期电力负荷预测中的应用

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电网技术 2012年第11期36卷 77-81页

作者：万昆柳瑞禹武汉大学经济与管理学院湖北省武汉市430072

电力负荷数据通常随着时间的不同而呈现一定的波动性。针对电力负荷随着时间波动呈现出一个范围波动的特点,采用区间时间序列估计与向量自回归相结合的方法对短期电力负荷进行预测,预测结果拟合良好,提高了电网公司对电力负荷的预测精确... 详细信息

电力负荷数据通常随着时间的不同而呈现一定的波动性。针对电力负荷随着时间波动呈现出一个范围波动的特点,采用区间时间序列估计与向量自回归相结合的方法对短期电力负荷进行预测,预测结果拟合良好,提高了电网公司对电力负荷的预测精确度,为电网公司制定负荷预报曲线提供精准数据信息,为电网公司编制电力负荷计划提供理论支持和有效的方法。

关键词：区间时间序列向量自回归电力负荷预测

Evaluation of Projects Based of Entropy and TOPSIS

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Evaluation of Projects Based of Entropy and TOPSIS

“威而不霸”与解耦式身份重构:吉利并购宝腾事件中李书福的管理应对之道

2011 3rd IEEE International Conference on Information Management and Engineering(ICIME 2011)

作者： ruiyu liu Fei Ye School of Economics and Management Wuhan University Wuhan China

The entropy was applied to evaluation of projects which could determine the weights of evaluation indexes ***,we used the TOPSIS method for the comprehensive *** last,an example was given to prove that entropy and TOP... 详细信息

关键词： Projects TOPSIS method Entropy

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管理学报 2021年第6期18卷 791-802页

作者：姚小涛王勇刘瑞禹西安交通大学管理学院西安市710049

针对中国企业在"一带一路"倡议下,开始以并购方式进入沿线新兴经济体这一新情境下,如何应对新的挑战等一系列共性问题,通过选取吉利公司并购马来西亚宝腾公司这一典型案例,对吉利公司面临的并购挑战及其应对策略的深入剖析,提炼出李书福... 详细信息

针对中国企业在"一带一路"倡议下,开始以并购方式进入沿线新兴经济体这一新情境下,如何应对新的挑战等一系列共性问题,通过选取吉利公司并购马来西亚宝腾公司这一典型案例,对吉利公司面临的并购挑战及其应对策略的深入剖析,提炼出李书福"威而不霸"的企业并购管理思路。研究结果表明,吉利公司面临的并购挑战来自于自身的外部身份惰性和宝腾公司的内部身份惰性,其应对策略是包括身份映射、对象身份认知重构、对象身份愿景强化以及身份抱负强化在内的解耦式身份重构。提出身份惰性这一概念在理论层面能较好地弥补来源国劣势在"一带一路"倡议下新情境中缺乏解释力这一空白;在实践层面,也能为中国企业在"一带一路"倡议下走出国门提供较好启示意义。

关键词：企业家思想跨国并购 “一带一路” 新兴经济体身份惰性案例研究

基于成本的机载通信系统可靠性安全性一体化设计

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南京航空航天大学学报 2021年第4期53卷 637-647页

作者：刘睿禹吴红兰陶旭东南京航空航天大学民航学院南京211106

针对民用客机的通信系统,在其研发过程中以成本为约束条件权衡系统安全性可靠性作为研究目标。首先确定通信系统可靠性安全性指标,进而通过灰色关联分析与多元线性回归提取关键影响因子并进行量化,并运用MATLAB软件建立单目标-多目标一... 详细信息

针对民用客机的通信系统,在其研发过程中以成本为约束条件权衡系统安全性可靠性作为研究目标。首先确定通信系统可靠性安全性指标,进而通过灰色关联分析与多元线性回归提取关键影响因子并进行量化,并运用MATLAB软件建立单目标-多目标一体化加权指数ZETA评分模型,根据实际要求对比分析了优化结果中不同的权衡域。最后根据民用客机通信系统研发成本,通过基于核和灰度的灰色马尔科夫预测模型对未来某系列民用客机通信系统研发成本进行预测与平均误差计算,验证一体化寻优模型的可行性与可信度。结果证明一体化权衡模型有很好的工程参考价值。

关键词：民用客机通信系统灰色关联分析加权指数ZETA评分模型研发成本灰色马尔科夫预测模型

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常规业绩评价方法中存在的问题与解决方法

科研管理 1999年第3期20卷 25-29页

作者：贺元启柳瑞禹武汉水利电力大学人文与工商管理学院

项目执行后，在进行业绩评价时，我们曾在投资预测与决策中使用过的净现值（ＮＰＶ）、内部收益率（ＩＲＲ）、净年值（ＮＡＶ）、投资回收期（ＩＲＰ）等以现金流量为基础的指标似乎被遗忘了，取而代之的是投资报酬率（ＲＯＩ）、资产... 详细信息

项目执行后，在进行业绩评价时，我们曾在投资预测与决策中使用过的净现值（ＮＰＶ）、内部收益率（ＩＲＲ）、净年值（ＮＡＶ）、投资回收期（ＩＲＰ）等以现金流量为基础的指标似乎被遗忘了，取而代之的是投资报酬率（ＲＯＩ）、资产周转率（ＡＴＲ）、权益净利率（ＲＯＥ）等一系列利润或收益性质的指标，这便违背了“预算和评价同口径”的最基本原则。而在本文中所提出的两个指标：现金流量回收率（ＣＦＲＲ）和剩余现金流量（ＳＣＦ）较好地克服了这种不足。

关键词：业绩评价现金流量回收率剩余现金流量企业

In vitro effects of sodium hyaluronate on the proliferation and the apoptosis in chondrocytes from patients with Kashin-Beck disease and osteoarthritis

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Journal of Nanjing Medical University 2009年第2期23卷 104-110页

作者： Zongqiang Gao Xiong Guo Chen Duan Weijuan Ma Peng Xu ruiyu liu Qisheng Gu Junchang Chen Inslitute of Endemic Diseases Faculty of Public Health Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education Medicine College of Xi' an Jiaotong University Xi' an 710061 China Department of Orthopedics Surgery the Second Affiliated Hospital of Xi' an Jiaotong University Xi' an 710061 China Shanghai Qisheng Biological preparation Co.Ltd Shanghai 201100 China

Objective：To identify the in vitro effects of sodium hyaluronate（HA） on the proliferation and the apoptosis of chondrocytes from patients with Kashin-Beck disease（KBD） and osteoarthritis（OA）. Methods：Samples of articular cartilages from KBD and OA patients, as well as healthy volunteers（6 subjects in each of the 3 groups） were dissected, digested with collagenase and the cells cultured in monolayers. Chondrocytes from each sample were assigned to an untreated group and two HA-treated groups： H0（no HA）, H100（HA, 0.1 g/L） and H500（HA, 0.5 g/L）. The first passage chondrocytes were used to observe proliferation using the MTT assay, and apoptosis by flow cytometry through Annexin V/PI staining. Results：HA promoted proliferation of chondrocytes in all the three groups, *** KBD and OA groups, for cells cultured for 4 and 6 days, H500 significantly promoted the cell proliferation. The apoptotic rates of both KBD and OA group chondrocytes were in the order H500 〈 HA100 〈 H0. Conclusion：Sodium hyaluronate administration has a dosedependent in vitro effect to promote proliferation and inhibit apoptosis of chondrocytes from patients with KBD and OA.

关键词： sodium hyaluronate Kashin-Beck Disease(KBD) osteoarthritis chondrocyte proliferation apoptosis

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公共资本与电力投资过热

生产力研究 2007年第3期 112-113,140页

作者：柳瑞禹郑德鼎武汉大学经济与管理学院湖北武汉430072

文章分析了国家公共资本对电力企业资本积累的动态影响。针对公共资本的拥挤性特征及其可能引起的风险。在不考虑公共投资风险的情况下,由于公共资本和企业资本都处于短缺状态,这样就产生争夺拥挤性公共资本而扩张企业资本的投资行为,... 详细信息

文章分析了国家公共资本对电力企业资本积累的动态影响。针对公共资本的拥挤性特征及其可能引起的风险。在不考虑公共投资风险的情况下,由于公共资本和企业资本都处于短缺状态,这样就产生争夺拥挤性公共资本而扩张企业资本的投资行为,从而导致电力投资过热和公共资本过度拥挤。

关键词：电力投资拥挤性公共资本过度投资