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Eucaglobulin, A New Complex of Gallotannin and Monoterpene from Eucalyptus globulus

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Chinese Chemical Letters 1998年第6期9卷 541-543页

作者： Hou, AJ liu, yz Lin, ZW Sun, HD Acad Sinica Kunming Inst Bot Lab Phytochem Kunming 650204 Peoples R China Henan Coll Tradit Chinese Med Phytochem Dept Zhengzhou 450003 Peoples R China

Eucaglobulin 1, a new complex of gallotannin and monoterpene, was isolated from the leaves of Eucalyptus globulus. Its structure was determined by spectral methods.

关键词： Eucalyptus globulus Myrtaceae gallotannin-monoterpene complex eucaglobulin

Daphkoreanin, a New Coumarin Glucoside from Daphne Koreana

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Chinese Chemical Letters 1997年第3期8卷 229-230页

作者： liu, yz Ding, G Ji, CR Wu, YJ HENAN COLL TRADIT CHINESE MED DEPT PHYTOCHEMZHENGZHOU 450003PEOPLES R CHINA ZHENGZHOU UNIV DEPT CHEMZHENGZHOU 450052PEOPLES R CHINA

A new coumarin glucoside,daphkoreanin, has been isolated from the roots and stems of Daphne koreana. Its structure was established as 5-methoxy-7-hydroxy coumarin-8-O-beta-D-glucoside by physicochemical properties and... 详细信息

关键词： Daphkoreanin a New Coumarin Glucoside from Daphne Koreana

A Time Domain Computation Method for Dynamic Behavior of Mooring System

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China Ocean Engineering 1998年第1期13卷 1-10页

作者： liu, yz Miao, GP Li, YL liu, ZY liu, HD Huang, QY Ma, QJ Shanghai Jiao Tong Univ Sch Naval Architecture & Ocean Engn Shanghai 200030 Peoples R China Univ Michigan Dept Naval Architecture & Ocean Engn Ann Arbor MI 48109 USA Chinese Acad Sci Inst Mech Beijing 100080 Peoples R China China Offshore Oil Bohai Corp Tianjin 300452 Peoples R China

A quasi-steady time domain method is developed for the prediction of dynamic behavior of a mooring system under the environmental disturbances, such as regular or irregular waves, winds and currents. The mooring forces are obtained in a static sense at each instant. The dynamic feature of the mooring cables can be obtained by incorporating the extended 3-D lumped-mass method with the known ship motion history. Some nonlinear effects, such as the influence of the instantaneous change of the wetted hull surface on the hydrostatic restoring forces and Froude-Krylov forces, are included. The computational results show a satisfactory agreement with the experimental ones.

关键词： mooring systems dynamic characteristics time domain analysis

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan Wang Fan Zhang Xingyu Zhou Qian Wang Changyu liu Yangyang liu Hui Wang Xiaojie liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

猪小肠黏膜下层移植修复兔膝关节内侧副韧带缺损

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中国组织工程研究与临床康复 2007年第21期11卷 4089-4092页

作者：陶海荣刘勇章邹剑王立许志兴金文杰丁欢上海交通大学医学院附属第三人民医院上海市201900 上海市第六人民医院上海市200233

目的:观察猪小肠黏膜下层修复兔膝关节内侧副韧带缺损的作用效果。方法:实验于2006-01/08在上海交通大学医学院附属第三人民医院动物房及中心实验室完成。选用新西兰大白兔24只,动物左右两膝分别作为猪小肠黏膜下层移植组及自体韧带移植... 详细信息

目的:观察猪小肠黏膜下层修复兔膝关节内侧副韧带缺损的作用效果。方法:实验于2006-01/08在上海交通大学医学院附属第三人民医院动物房及中心实验室完成。选用新西兰大白兔24只,动物左右两膝分别作为猪小肠黏膜下层移植组及自体韧带移植组,分别制作兔膝关节内侧副韧带缺损模型。猪小肠黏膜下层移植组植入猪小肠黏膜下层,猪小肠黏膜下层作为细胞外基质,无免疫原性;自体韧带移植组植入对侧副韧带。分别于术后2,4,8和12周取白兔膝关节内侧副韧带,行大体形态观察及组织学和力学检查,两组间进行对比观察。结果:24只白兔均进入结果分析,无脱失。①内侧副韧带移植段大体形态观察结果:术后4周,猪小肠黏膜下层移植组有大量的肉芽增生,与周围粘连;自体韧带移植组肉芽组织与周围粘连相对少。术后8周,猪小肠黏膜下层移植组组织梭形增生;自体韧带移植组组织平行增生,直径略小于猪小肠黏膜下层移植组。术后12周,猪小肠黏膜下层移植组增生组织平行于自体韧带,大小一致;自体韧带移植组增生组织直径与猪小肠黏膜下层移植组相一致。②内侧副韧带移植段光镜检查结果:术后2周,猪小肠黏膜下层移植组少量炎性细胞浸润,成纤维细胞数目不多,血管增生明显;自体韧带移植组炎性细胞稀少。术后4周,猪小肠黏膜下层移植组有大量的成纤维细胞,胶原增多;自体韧带移植组成纤维细胞和胶原比猪小肠黏膜下层移植组多。术后8周,猪小肠黏膜下层移植组纤维细胞为主,纤维纵向排列;自体韧带移植组也以成纤维细胞为主。术后12周,两组均有大量的胶原,排列整齐,细胞和纤维密度相一致。③内侧副韧带力学检查结果:术后4周猪小肠黏膜下层移植组白兔内侧副韧带的最大拉伸负荷大于自体韧带移植组[(36.8±8.9,25.3±7.3)N(P0.05)。结论:猪小肠黏膜下层是一种良好的生物材料,可以用来移植修复膝关节内侧副韧带缺损和损伤,移植后期具有与自体韧带相似的替代修复作用。

关键词：肠粘膜/移植内侧副韧带,膝/损伤组织移植

Role of the Greenland Sea ice anomaly in the late-spring drought over Northwest China

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 1-5页

作者： Yang liu Huopo Chen Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University for Information Science and TechnologyNanjingChina

Drought across Northwest China in late spring has exerted a vital effect on the local climate and agricultural production,and has been alleviated during the past *** study explored the influence of the preceding Arctic sea ice on the May drought in Northwest China caused by the precipitation *** analysis indicated that when the Greenland Sea ice concentration is abnormally high during February to April,the dry conditions in Northwest China tend to be *** increase of sea ice in the Greenland Sea can excite a meridional circulation,which causes sea surface temperature(SST)anomalies in the North Atlantic via the sea-air interaction,manifested as significant warm SST anomalies over the south of Greenland and the subtropical North Atlantic,but negative SST anomalies over the west of the *** abnormal SST pattern maintains to May and triggers a zonal wave train from the North Atlantic through Scandinavia and Central Asia to Northwest China,leading to abnormal cyclones in Northwest ***,Northwest China experiences a more humid climate than usual.

关键词： Arctic sea ice Greenland Sea North Atlantic SST Drought Northwest China

Low-cost and fluoride-free synthesis of MFI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

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Journal of Energy Chemistry 2025年第1期100卷 458-468页

作者： Peng Zhu Cun liu Yiren Yu Guoshu Gao Yumeng Zhao Xiongfu Zhang Guodong liu Guohui Yang State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Zeolite nanosheets with a short b-axis thickness are highly desirable in lots of catalytic reactions due to their reduced diffusion resistance. Nevertheless, conventional synthesis methods usually require expensive structure-directing agents(SDAs), pricey raw materials, and eco-unfriendly fluorine-containing additives. Here, we contributed a cost-effective and fluoride-free synthesis method for synthesizing high-quality MFI zeolite nanosheets through a Silicalite-1(Sil-1) seed suspension and urea cooperative strategy, only with inexpensive colloidal silica as the Si source. Our approach was effective for synthesizing both Sil-1 and aluminum-containing ZSM-5 nanosheets. By optimizing key synthesis parameters,including seed aging time, seed quantity, and urea concentration, we achieved precise control over the crystal face aspect ratio and b-axis thickness. We also revealed a non-classical oriented nanosheet growth mechanism, where Sil-1 seeds induced the formation of quasi-ordered precursor particles, and the(010)crystal planes of these particles facilitated urea adsorption, thereby promoting c-axis-oriented *** obtained ZSM-5 nanosheets exhibited exceptional catalytic performance in the benzene alkylation with ethanol, maintaining stability for over 500 h, which is 5 times longer than traditional ZSM-5 catalysts. Furthermore, large-scale production of ZSM-5 nanosheets was successfully carried out in a 3 L highpressure autoclave, yielding samples consistent with those from laboratory-scale synthesis. This work marks a significant step forward in the sustainable and efficient production of MFI nanosheets using inexpensive and environmentally friendly raw materials, offering the broad applicability in catalysis.

关键词： MFI zeolite ZSM-5 Nanosheets Scale-up synthesis Aromatic alkylation

Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic H2O2 synthesis coupled with biomass valorization

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Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye Li Shuang Pan Yihuang Chen Qiong liu College of Chemistry and Materials Engineering Wenzhou University Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology (China) Institute of Analysis Guangdong Academy of Sciences (China National Analytical CenterGuangzhou)

Photocatalytic oxygen reduction for hydrogen peroxide （H2O2） synthesis presents a green and costeffective production ***,achieving highly selective H2O2synthesis remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to H2O2and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride（CNRb）.The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h-1for H2O2generation and photooxidation rate of 3.75 mM h-1for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion （SCC） efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high-selective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high selective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synthesis of H2O2coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Rubidium atom coordination Biomass valorization

电针对单纯性肥胖大鼠下丘脑组织中瘦素和神经肽Y表达的影响

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中国组织工程研究与临床康复 2007年第21期11卷 4151-4154页

作者：钟广伟李炜李臻琰龙春香王素娥唐红梅邓干初刘远珍中南大学湘雅医院中西医结合科针灸组湖南省长沙市410008

目的:观察电针对单纯性肥胖大鼠下丘脑瘦素和神经肽Y表达的影响,探索电针减肥的机制。方法:实验于2005-12/2006-06在中南大学湘雅医院中西医结合研究所实验室完成。①取1月龄刚断乳SD雄性大鼠,随机取6只饲以普通饲料为正常对照组,其他... 详细信息

目的:观察电针对单纯性肥胖大鼠下丘脑瘦素和神经肽Y表达的影响,探索电针减肥的机制。方法:实验于2005-12/2006-06在中南大学湘雅医院中西医结合研究所实验室完成。①取1月龄刚断乳SD雄性大鼠,随机取6只饲以普通饲料为正常对照组,其他大鼠饲以高脂饲料,喂养3个月后,选择体质量超过正常对照组20%的单纯性肥胖大鼠12只,随机分为模型组和电针组2组,每组6只。②电针组大鼠电针双侧足三里、天枢、三阴交穴,采用疏密波,电流强度0.3～0.6mA,留针20min,1次/d,共20次;其他2组不电针。实验期间均饲以普通饲料。③观察实验大鼠体质量、体长、Lee's指数及体脂,采用Western-blot技术检测下丘脑组织中瘦素、神经肽Y表达的变化。结果:18只大鼠进入结果分析。①模型组大鼠体质量和Lee’s指数高于正常对照组[(451.8±14.8),(323.6±6.8)g;324.25±1.4,305.14±1.5;P均<0.01];电针组电针后体质量和Lee’s指数低于电针前[(372.2±20.4),(454.7±19.7)g;307.71±1.5,323.56±1.6;P均<0.01]。②模型组大鼠心包、肾周和附睾脂肪量均高于正常对照组(P<0.01);电针组电针后心包、肾周和附睾脂肪量低于电针前(P<0.01)。③模型组下丘脑组织中瘦素蛋白表达低于正常对照组(0.62±0.11,0.88±0.15,P<0.01),电针组高于模型组(0.85±0.13,P<0.01);模型组下丘脑组织中神经肽蛋白表达高于正常对照组(2.42±0.27,1.75±0.24,P<0.01),电针组高于模型组(1.87±0.21,P<0.01)。结论:电针有良好的减肥效果,其作用可能与电针增强下丘脑组织瘦素蛋白的表达、同时抑制下丘脑组织中的神经肽Y蛋白表达有关。

关键词：电针单纯性肥胖大鼠瘦素神经肽Y 免疫印迹法