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Force optimization of ionic polymer metal composite actuators by an orthogonal array method

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Chinese Science Bulletin 2011年第19期56卷 2061-2070页

作者： YU Min HE QingSong DING Yan GUO DongJie li jiabo DAI ZhenDong Institute of Bio-inspired Structure and Surface Engineering Nanjing University of Aeronautics & Astronautics Nanjing 210016 China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics & Astronautics Nanjing 210016 China

Ionic polymer metal composites (IPMCs), a new kind of electro-active polymer, can be used for micro robotic actuators, artificial muscles and dynamic sensors. However, IPMC actuators have the major drawbacks of a low generative blocking force and dependence on a humid environment, which limit their further application. Multiple process parameters for the fabrication of IPMCs were optimized to produce a maximum blocking force; the parameters included reducing agent concentration, platinum salt concentration in the initial compositing process, and tetraethyl orthosilicate (TEOS) content. An orthogonal array method was designed and a series of fabrication experiments were carried out to identify the optimum process parameters. The results show that the platinum salt concentration in the initial compositing process plays the most significant role in improving the blocking force of IPMCs, the TEOS content plays an important role, and the reducing agent concentration has no apparent effect on the blocking force. In the optimized conditions, the IPMC actuator exhibited maximum blocking force of 50 mN, and the corresponding displacement was 14 mm. Compared with normal conditions, the blocking force improved 2.4-fold without sacrificing the displacement, and the effective air-operating life was prolonged 5.8-fold for the blocking force and 5-fold for the displacement. This study lays a solid foundation for further applications of IPMCs.

关键词：金属复合材料离子聚合物优化条件致动器正硅酸乙酯直交电活性聚合物 IPMC

Ab initio/MBPT Studies of the Effective Exchange Integrals and Theoretical Models of Organic Ferromagnets

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Chemical Research in Chinese Universities 1991年第3期7卷 181-183页

作者： li jiabo (Department of Chemistry, Xiamen University, Xiamen)

Nowadays the studies of organize ferromagnets have been becoming a very attractive area of material science in both theoretical and experimental aspects. A major theoretical problem on design of OFM is to estimate the effective exchange integrals(J) between radical sites. However, most of theoretical work was on hypothetical hydrocarbons, which were impracticable in the synthesis. The recent breakthrough in the synthesis of OFM turns the theorist’s attention to some more realistic models such as those

关键词： Organic ferromagnet(OFM) Doping Curie temperature

Striking Stabilization Effect of Spinel Cobalt Oxide Oxygen Evolution Electrocatalysts in Neutral pH by Dual-Sites Iron Incorporation

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Energy & Environmental Materials 2024年第2期7卷 152-160页

作者： Shuairu Zhu Xue Wang jiabo Le Na An Jianming li Deyu liu Yongbo Kuang Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences1219 Zhongguan West RoadNingbo 315201China Zhejiang Institute of Tianjin University 85 Zhongguan West RoadNingbo 315201China Research Center of New Energy Research Institute of Petroleum Exploration&Development20 Xueyuan RoadBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences19(A)Yuquan RoadBeijing 100049China

Developing stable and efficient nonprecious-metal-based oxygen evolution catalysts in the neutral electrolyte is a challenging but essential goal for various electrochemical ***,cobalt-based spinels have drawn a considerable amount of attention but most of them operate in alkali ***,the frequently studied Co-Fe spinel system never exhibits appreciable stability in nonbasic conditions,not to mention attract further investigation on its key structural motif and transition states for activity ***,we report exceptional stable Co-Fe spinel oxygen evolution catalysts(~30%Fe is optimal)in a neutral electrolyte,owing to its unique metal ion arrangements in the crystal *** introduced iron content enters both the octahedral and tetrahedral sites of the spinel as Fe^(2+)and Fe^(3+)(with Co ions having mixed distribution as well).Combining density functional theory calculations,we find that the introduction of Fe to Co_(3)O_(4)lowers the covalency of metal-oxygen bonds and can help suppress the oxidation of Co^(2+/3+)and 0^(2-).It implies that the Co-Fe spinel will have minor surface reconstruction and less lattice oxygen loss during the oxygen evolution reaction process in comparison with Co_(3)O_(4)and hence show much better *** findings suggest that there is still much chance for the spinel structures,especially using reasonable sublattices engineering via multimetal doping to develop advanced oxygen evolution catalysts.

关键词： dual-sites iron electrocatalyst stability neutral electrolyte oxygen evolution reaction spinel oxides

Herb induced liver injury by Xianling Gubao Tablets: A case assessed for causality using updated RUCAM and integrated evidence chain

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Chinese Herbal Medicines 2024年第2期16卷 301-309页

作者： Chunyu li Yingying li Zhaofang Bai jiabo Wang Guohui li Xiaohe Xiao National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Senior Department of Hepatology The Fifth Medical Center of PLA General HospitalBeijing 100039China School of Traditional Chinese Medicine Capital Medicinal UniversityBeijing 100069China

Objective:A typical case of Xianling Gubao(XLGB)Tablets-induced liver injury was systematically studied in the clinic and the ***:A patient with herb-induced liver injury(HIli)and a history of taking XLGB Tablets before disease onset was engaged as the study subject,and the case was diagnosed according to the updated Roussel Uclaf Causality Assessment Method(RUCAM)and the integrated evidence chain(iEC)method recommended by the Guidelines for Diagnosis and Treatment of Herb-induced liver Injury(HIli Guidelines).Results:Clinical history,biochemical indexes and imaging tests were used to exclude the influence of fundamental diseases and confusing liver diseases such as viral,alcoholic and autoimmune liver diseases on the *** on an investigation of the patient’s medication history,she was suspected to have HIli caused by XLGB Tablets,as the patient was only taking an oral preparation of XLGB Tablets,and the influence of other drugs on the diagnosis was *** patient with alanine aminotransferase(ALT)3 upper limit of normal(ULN)and a calculated R of 6 was diagnosed with possible acute drug-induced hepatocellular *** relationship was considered“highly probable”(score of 9)using the updated RUCAM of ***,the fingerprint similarity between the preparation taken by the patient and a commercially available preparation was 0.99,suggesting that the patient was consuming XLGB Tablets rather than another ***-MS technology and the Agilent Fake TCM-Drugs database were used to investigate the drug,and no chemical additions were *** of the drug for pesticide residues,heavy metals,aflatoxins and other exogenous substances indicated compliance with the content limits of the Chinese ***:In summary,the final diagnosis of XLGB-induced liver injury reached the clinical diagnosis of HIli and was acute severe hepatocellular injury type by the updated RUCAM and ***,this study provides scientif

关键词： chemical analysis compound preparations of traditional chinese medicines integrated evidence chain liver injury Roussel Uclaf Causality Assessment Method Xianling Gubao Tablets

Histones of Neutrophil Extracellular Traps Induce CD11b Expression in Brain Pericytes Via Dectin-1 after Traumatic Brain Injury

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Neuroscience Bulletin 2022年第10期38卷 1199-1214页

作者： Yang-Wuyue liu Jingyu Zhang Wanda Bi Mi Zhou jiabo li Tiantian Xiong Nan Yang li Zhao Xing Chen Yuanguo Zhou Wenhui He Teng Yang Hao Wang Lunshan Xu Shuang-Shuang Dai Department of Biochemistry and Molecular Biology School of Basic MedicineArmy Medical UniversityChongqing400038China Department of Neurosurgery Daping HospitalArmy Medical UniversityChongqing400042China Molecular Biology Center State Key Laboratory of TraumaBurnand Combined InjuryDaping HospitalArmy Medical UniversityChongqing400042China Department of Pathophysiology College of High Altitude MedicineArmy Medical UniversityChongqing400038China Brigade 1 of Medical Undergraduates School of Basic MedicineArmy Medical UniversityBattalion 1Chongqing400038China

The brain pericyte is a unique and indispensable part of the blood-brain barrier(BBB),and contributes to several pathological processes in traumatic brain injury(TBI).However,the cellular and molecular mechanisms by which pericytes are regulated in the damaged brain are largely ***,we show that the formation of neutrophil extracellular traps(NETs)induces the appearance of CD11b^(+)pericytes after *** CD11b^(+)pericyte subsets are characterized by increased permeability and pro-inflammatory profiles compared to ***,histones from NETs by Dectin-1 facilitate CD11b induction in brain pericytes in PKC-c-Jun dependent manner,resulting in neuroinflammation and BBB dysfunction after *** data indicate that neutrophil-NET-pericyte and histone-Dectin-1-CD11b are possible mechanisms for the activation and dysfunction of *** NETs formation and Dectin-1 are promising means of treating TBI.

关键词： Pericyte Neutrophil TBI NET Dectin-1

Design and Experiment of 1LFQ-325 Pneumatic Reversible Plough

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Asian Agricultural Research 2013年第1期5卷 76-78,82页

作者： Xuan ZHENG Xuefeng CHEN Chaomin QIN li jiabo JIA Machinery and Equipment Institute of Xinjiang Academy of Agricultural Reclamation Sciences Xinjiang Tianzhen Farm and Pasture Machinery Manufacturer

A pneumatic reversible plough is developed, which complements to the tractor of 25.7-36.8 *** plough adopts the cylinder as reversing mechanism between the right and left plough bodies, and the cylinder can substitute the mechanical reversing mechanism. The pneumatic turnover allows the plough to be operated easily and turned over flexibly. Field experiment results show that indicators of plough performance meet the requirements of the relevant national standards.

关键词： Pneumatic Reversible plough Design Experiment

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常减压装置封油技术优化改造

炼油技术与工程 2013年第11期43卷 25-28页

作者：李家博中国石油化工股份有限公司洛阳分公司河南省洛阳市471012

封油作为机泵密封的一种手段,在石化行业应用广泛。中国石油化工股份有限公司洛阳分公司常减压蒸馏装置原有封油系统存在问题,借装置大检修之际对封油系统实施了技术改造,将性质接近于常三线柴油的减一线油作为封油引入封油罐,将原有常... 详细信息

封油作为机泵密封的一种手段,在石化行业应用广泛。中国石油化工股份有限公司洛阳分公司常减压蒸馏装置原有封油系统存在问题,借装置大检修之际对封油系统实施了技术改造,将性质接近于常三线柴油的减一线油作为封油引入封油罐,将原有常三线柴油作为封油系统的补充封油;另一方面对高温机泵的封油系统进行改造,将一部分高温机泵改为双端面密封,并且引用白油作为大气侧密封介质,外端面密封共采用了PLAN52与PLAN53B两个方案,改造后运行效果良好。

关键词：常减压蒸馏装置封油机械密封双端面密封

载体制备方法对MoO_3/ZrO_2耐硫甲烷化催化剂的影响

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化工进展 2017年第4期36卷 1288-1293页

作者：杨霞秦绍东李加波孙守理北京低碳清洁能源研究所北京102209

采用沉淀法制备了ZrO_2载体并进一步制备用于耐硫甲烷化反应的MoO_3/ZrO_2催化剂,考察了沉淀过程中增加醇洗以及醇溶液中高温老化处理对ZrO_2织构性质、晶相结构和形貌的影响。利用N_2物理吸附、X射线衍射、透射电子显微镜和X射线光电... 详细信息

采用沉淀法制备了ZrO_2载体并进一步制备用于耐硫甲烷化反应的MoO_3/ZrO_2催化剂,考察了沉淀过程中增加醇洗以及醇溶液中高温老化处理对ZrO_2织构性质、晶相结构和形貌的影响。利用N_2物理吸附、X射线衍射、透射电子显微镜和X射线光电子能谱等手段对载体的结构与表面性质和催化剂活性相的形态与分布进行了表征。结果表明,醇洗和高温老化过程可以显著改善ZrO_2的结构特征,获得比表面积较大且晶粒尺寸更小更均匀的ZrO_2载体;进而有利于促进相应Mo基催化剂中MoS_2活性相的分散,使催化剂表现出优异的甲烷化活性。

关键词：一氧化碳耐硫甲烷化氧化锆钼基催化剂天然气

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钴系费-托合成催化剂的助剂及其作用

石油学报（石油加工） 2015年第2期31卷 390-399页

作者：石玉林林泉李加波北京低碳清洁能源研究所北京102211

对Co系费-托合成催化剂助剂的影响效果和作用机理按照助剂在元素周期表中的位置排列进行了归纳和分析。分析表明,助剂的种类涵盖了从ⅠA族到Ⅷ族的众多族元素及其化合物,包括贵金属、稀土金属、金属氧化物、碱金属和碱土金属。这些助剂... 详细信息

对Co系费-托合成催化剂助剂的影响效果和作用机理按照助剂在元素周期表中的位置排列进行了归纳和分析。分析表明,助剂的种类涵盖了从ⅠA族到Ⅷ族的众多族元素及其化合物,包括贵金属、稀土金属、金属氧化物、碱金属和碱土金属。这些助剂通过影响Co催化剂的还原温度、还原度、Co晶粒分散度、Co与载体之间的相互作用、Co对CO的吸附解离能力等途径而改变Co催化剂的费-托合成反应性能。

关键词：费-托合成钴催化剂助剂作用