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carbon Nanomaterials for Applications on Supercapacitors

MRS ADVANcES 2017年第54期2卷 3283-3289页

作者： Gong, Youning Fu, Qiang Pan, chunxu Wuhan Univ Sch Phys & Technol Wuhan 430072 Peoples R China Wuhan Univ MOE Key Lab Artificial Micro & Nano Struct Wuhan 430072 Peoples R China Wuhan Univ Ctr Electron Microscopy Wuhan 430072 Peoples R China

Supercapacitor is a newly-developed device for electrochemical energy storage with high power density, long life span, as well as rapid capture and storage of energy. carbon-based materials, from carbon nanospheres, nanotubes and nanofibers to graphene, are the most commonly used electrode materials for supercapacitors. Our group has engaged in the research of carbon nanomaterials over the past decade. Herein we summarize some typical carbon nanomaterials and their synthetic routes based on our published works, which is expected to provide the theoretical and experimental basis for further applications on carbon-based energy storage devices.

关键词： c energy storage nanoscale

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Evollionines A - c, Three New Alkaloids Isolated from the Fruits of Evodia rutaecarpa

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HELVETIcA cHIMIcA AcTA 2014年第11期97卷 1481-1486页

作者： Li, Yan-Hong He, Juan Li, Yan Wu, Xing-De Peng, Li-Yan Du, Ru-Nan cheng, Xiao Zhao, Qin-Shi Li, Rong-Tao Chinese Acad Sci Kunming Inst Bot State Key Lab Phytochem & Plant Resources West Ch Kunming 650201 Peoples R China Kunming Univ Sci & Technol Fac Life Sci & Technol Kunming 650500 Peoples R China

A phytochemical study of the cHcl3 extract of the dried unripe fruits of Evodia rutaecarpa (Juss.) Benth. (Rutaceae) resulted in the isolation of three new alkaloids, evollionines A-c (1-3, resp.), together with two known compounds, evodianinine and wuzhuyumide I. The structures of the new compounds were elucidated on the basis of detailed spectroscopic evidence and confirmed in the case of compound 1 by single-crystal X-ray analysis.

关键词： Evodia rutaecarpa Alkaloids Evollionines A&thinsp -&thinsp c Indole alkaloids

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Mo 2 [email protected] @MoS x porous nanospheres with sandwich shell based on MoO 4 2- -polymer precursor for efficient hydrogen evolution in both acidic and alkaline media

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carbon 2017年 124卷 555-564页

作者： Jing-Qi chi Xiao Shang Shan-Shan Lu Bin Dong Zi-Zhang Liu Kai-Li Yan Wen-Kun Gao Yong-Ming chai chen-Guang Liu State Key Laboratory of Heavy Oil Processing China University of Petroleum (East China) Qingdao 266580 PR China College of Science China University of Petroleum (East China) Qingdao 266580 PR China

Mo 2 [email protected] @MoS x porous nanospheres with sandwich shell have been synthesized for efficient hydrogen evolution in both acidic and alkaline media. Firstly, porous MoO 2 -Mo 2 [email protected] nanospheres have been obtained with ultrafine Mo 2 c nanocrystallines as core and ultrathin N-doped carbon (Nc) as shell through the carbonization of MoO 4 2- -/aniline-pyrrole (MoO 4 2- -Polymer) as precursor. Secondly, Mo 2 [email protected] @MoS x porous nanospheres with sandwich shell have been synthesized by hydrothermal sulfurization, which can be confirmed by XPS and HRTEM. The sandwich shell is composed of ultrathin MoS x , Nc layer and Mo 2 c nanocrystallines, which may reduce the strong Mo H bonding energy of pure Mo 2 c and lead to the suitable ΔG H* for HER. In addition, the ultrathin Nc can prevent the aggregation of active sites and improve charge transfer rate due to rich N-doping. Mo 2 [email protected] @MoS x exhibits enhanced performance and long-time durability in both acidic and alkaline solution. It requires a low onsetpotential of 119 mV, Tafel slope of 56 mV dec −1 in acidic solution and onsetpotential of 86 mV, Tafel slope of 90 mV dec −1 in alkaline solution. Therefore, designing sandwich nanostructure with better conductivity and optimized Mo H bonding energy may be a promising strategy for excellent Mo-based HER electrocatalysts.

关键词： MoS x Mo 2 c Sandwich shell N-doping Electrocatalyst Hydrogen evolution reaction

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运动强度和时间对左右心室影响的比较研究

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中国运动医学杂志 2017年第2期36卷 111-121,105页

作者：饶志坚常芸王世强国家体育总局体育科学研究所北京100061 上海体育学院运动科学学院上海200438 湖南工业大学体育学院株洲412000

目的:研究运动强度和时间对左右心室结构、功能和纤维化的影响及它们之间的异同,并初步探讨涉及的可能机理。方法:48只雄性SD大鼠,随机分为对照(Sed)组、中强度运动(ME)组和大强度运动(IE)组,每组又分为8周组和16周组,共6组,每组8只。... 详细信息

目的:研究运动强度和时间对左右心室结构、功能和纤维化的影响及它们之间的异同,并初步探讨涉及的可能机理。方法:48只雄性SD大鼠,随机分为对照(Sed)组、中强度运动(ME)组和大强度运动(IE)组,每组又分为8周组和16周组,共6组,每组8只。对照组自由活动,中强度组和大强度组分别以速度15.2 m/min、坡度5°和速度28 m/min、坡度10°的条件每天运动1小时,每周运动5天。最后一次运动后,24小时内记录体重后使用心脏超声检测两心室的舒张末期内径和舒张末期室壁厚度及射血分数。采血后处死,迅速分离心脏。使用Elisa法检测大鼠血清cTnI浓度,天狼星红染色测定两心室的胶原容积分数。结果:在8周和16周时,中强度组和大强度运动组大鼠两心室舒张末期内径都大于对照组。仅16周时大强度组左心室舒张末期内径大于中强度组,其它中强度组和大强度组间左心室或右心室舒张末期内径无差异。随着运动强度增加和运动时间的推移,左心室及右心室舒张末期室壁厚度都有增加的趋势,但无统计学意义。大强度运动8周后,大鼠两心室的射血分数都有低于对照组和中强度组的趋势,但无统计学意义;而大强度运动16周后,两心室射血分数显著低于对照组和中强度组。大强度运动8周或16周后,血清cTnI显著高于对照组和中强度组,中强度组与对照组无差异。16周中强度组或大强度组两个心室的胶原容积分数大于8周时相应的组。8周或16周大强度运动组的右心室胶原容积分数显著大于相应的对照组,且16周时大强度组右心室胶原容积分数显著大于中强度组;而左心室相应的比较无差异。大鼠血清cTnI浓度与左心室和右心室收缩功能均负相关(r=-0.327,P=0.029和r=-0.582,P=0.000);大鼠血清cTnI浓度与左心室胶原容积分数不相关(P=0.276),但与右心室胶原容积分数中度正相关(r=0.597,P=0.000)。结论:1)16周中强度或大强度运动可导致左心室扩张,且运动强度越大扩张程度越大;而右心室扩张只需要8周中强度或大强度运动,但运动强度对右心室扩张程度的影响不明显。2)长期(8周或16周)耐力运动(中强度或大强度)使两心室壁有变肥厚的趋势。左心室肥厚和扩张可能不是同步的:先肥厚再扩张;但右心室肥厚和扩张是同步的。3)大强度耐力运动引起两心室收缩功能短暂性下降与心室损伤有关,且右心室可能比左心室损伤更严重。中强度运动不会引起心室损伤,对心室射血分数影响不大或无影响。4)长期(8周或16周)大强度耐力运动导致右心室胶原容积分数增加,可能是右心室损伤后形成的心肌纤维化,但左心室未见;而16周时中强度组和大强度组两心室的胶原容积分数分别大于8周时对应的组别,可能是8周之后的运动使两心室的心肌细胞继续肥大,细胞外基质也相应增多,并不是纤维化。

关键词：运动心脏重塑左心室右心室心肌纤维化 c Tn I 运动强度运动时间

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Metallacyclic assembly of interlocked superstructures

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coordination chemistry Reviews 2017年 333卷 1-26页

作者： Sheng-Li Huang T.S. Andy Hor Guo-Xin Jin Shanghai Key Laboratory of Molecular Catalysis and Innovative Material Collaborative Innovation Center of Chemistry for Energy Materials Department of Chemistry Fudan University Shanghai 200433 PR China Department of Chemistry University of Hong Kong Pokfulam Road Hong Kong China

Interlocked molecules are a type of supramolecules whose sub-components are held together not by covalent bonds but non-covalent interactions. Examples include rotaxanes, catenanes, Solomon links, ring-in-ring complexes, molecular Borromean rings, molecular knots and interlocked cages. The design and manufacture of these architectures is mainly based on self-assembly and template-directed methodologies. Inspired by the successful utilization of coordination-driven assembly in metallasupramolecular systems, the metallacyclic assembly of interlocked superstructures is developing rapidly and as such makes a fascinating topic for reviewing. In this review we will focus on the metal-directed synthesis of the different types of interlocked superstructures, as well as their functional applications.

关键词： PhcN benzonitrile DMSO dimethyl sulfoxide MecN acetonitrile DMF dimethylformamide en ethylenediamine tmen N , N , N ′, N ′-tetramethylethylene diamine dppp 1,3-bis(diphenylphosphino)propane phen 1,10-phenanthroline terpy terpyridine dpp diphenylphenanthroline PEt 3 triethylphosphine pn propane-1,2-diamine cp 1,2,3,4,5-pentamethylcyclopentadiene p -cymene 4-isopropyltoluene K 3 tma potassium 1,3,5-benzenetricarboxylate cB cucurbituril BPy 2+ bipyridinium β-cD β-cyclodextrin ONs − 2-naphthalenesulfonate DB 24 c 8 dibenzo-24-crown-8 DN 50 c 14 bis-1,5-dinaphtho[50]crown-14 dtc dithiocarbamate pz pyrazine bpy 2,2′-bipyridine bpe trans -1,2-bis(4-pyridyl)ethylene H 2 dhnd 6,11-dihydroxy-5,12-naphthacenedione dbd 1,4-di(pyridin-4-yl)buta-1,3-diyne TPT 2,4,6-tri(4-pyridyl)-1,3,5-triazine 2D two-dimensional 3D three-dimensional ScSc single-crystal-to-single-crystal transformation NMR nuclear magnetic resonance cSI-MS cold-spray ionization mass spectrometry ESI-MS electrospray ionisation mass spectrometry HRMS high resolution mass spectrometry Interlocked Metallasupramolecules coordination-driven assembly Supramolecular chemistry

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Synthesis of sub-millimeter tall SWNT forests on a catalyst underlayer of MgO single crystal

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MRS ADVANcES 2017年第1期2卷 1-8页

作者： Tsuji, Takashi Hata, Kenji Futaba, Don N. Sakurai, Shunsuke Natl Inst Adv Ind Sci & Technol CNT Applicat Res Ctr Cent 51-1-1 Higashi Tsukuba Ibaraki 3058565 Japan Technol Res Assoc Single Wall Carbon Nanotubes TA Cent 51-1-1 Higashi Tsukuba Ibaraki 3058565 Japan

We have demonstrated the high yield and highly single wall selective synthesis of carbon nanotube forest grown using a MgO single crystal as a catalyst underlayer without any surface treatment. Such efficiency has not been previously reported using this underlayer system. Our investigation revealed that the growth ambient which contained no hydrogen but small amounts of water is essential for such efficiency. Evaluation of the growth kinetics by in-situ height monitoring revealed that the 350 m tall forest with 65% single wall selectivity possessed a catalyst lifetime of about 5 minutes. Investigation by AFM, and XPS depth profiling revealed that this longer lifetime compared with as-deposited MgO can be attributed to the stability of the catalyst particle array with small size and high number density on MgO single crystal substrate. Shorter growth lifetime, when compared to the alumina underlayer system, resulted from an instability in the catalyst nanoparticle size and composition.

关键词： catalytic nanoscale c

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Matrix metalloproteases and their tissue inhibitors in non-alcoholic liver fibrosis of human immunodeficiency virus-infected patients

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World Journal of Virology 2017年第2期6卷 36-45页

作者： Julio collazos Eulalia Valle-Garay Tomás Suárez-Zarracina Angel-Hugo Montes José A cartón Víctor Asensi Infectious Diseases Hospital de Galdácano Biochemistry and Molecular Biology Hospital Universitario Central de AsturiasOviedo University School of Medicine Infectious Diseases Hospital Universitario Central de AsturiasOviedo University School of Medicine

AIM To investigate the relationships among diverse metalloproteases(MMPs) and their tissue inhibitors(TIMPs) and non-alcoholic liver fibrosis in human immunodeficiency virus(HIV)-infected *** Single nucleotide polymorphisms(SNPs) in MMPs, TNF-α and ccR5 genes, and serum levels of MMPs and TIMPs were determined in HIV-infected individuals with/out hepatitis c virus(HcV) coinfection. A total of 158 patients were included, 57 of whom were HcVcoinfected. All patients drank < 50 g ethanol/day. Diverse SNPs(MMP-1-1607 1G/2G, MMP-8-799c/T, MMP-9-1562 c/T, MMP-13-77A/G, TNF-α-308 G/A,ccR5-?32), and serum levels of MMPs(2, 3, 8, 9 and 10) and TIMPs(1, 2 and 4) were assessed. Liver fibrosis was determined by transient elastometry, although other non-invasive markers of fibrosis were also considered. Significant liver fibrosis(F ≥ 2) was defined by a transient elastometry value ≥ 7.1 kP *** A total of 34 patients(21.5%) had liver fibrosis ≥ F2. MMP-2 and TIMP-2 serum levels were higher in patients with liver fibrosis ≥ F2(P = 0.02 and P = 0.03, respectively) and correlated positively with transient elastometry values(P = 0.02 and P = 0.0009, respectively), whereas MMP-9 values were negatively correlated with transient elastometry measurements(P = 0.01). Multivariate analyses showed that high levels of MMP-2(OR = 2.397; 95%cI: 1.191-4.827, P = 0.014) were independently associated with liver fibrosis ≥ F2 in the patients as a whole. MMP-2(OR = 7.179; 95%cI: 1.210-42.581, P = 0.03) and male gender(OR = 10.040; 95%cI: 1.621-62.11, P = 0.013) were also independent predictors of fibrosis ≥ F2 in the HcV-infected subgroup. Likewise, MMP-2, TIMP-2 and MMP-9 were independently associated with transient elastometry values and other non-invasive markers of liver fibrosis. None of the six SNPs evaluated had any significant association with liver fibrosis ≥ *** certain MMPs and TIMPs, particularly MMP-2, seems to be associated with non-alcoholic liver fibrosis

关键词： Human immunodeficiency virus Hepatitis c virus Liver fibrosis Transient elastometry Noninvasive fibrosis markers Metalloproteases Their tissue inhibitors Genetic polymorphisms

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High Aspect Ratio Machining of Nanocarbon Materials by Reactive Ion Etching

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MRS ADVANcES 2017年第1期2卷 9-14页

作者： Sekiguchi, Atsuko Futaba, Don N. Yamada, Takeo Hata, Kenji Natl Inst Adv Ind Sci & Technol CNT Applicat Res Ctr Tsukuba Ibaraki 3058565 Japan

We demonstrate anisotropic, vertical deep etching of graphite and densely packed carbon nanotube (cNT) thick layer beyond the micrometer scale, which representing the first step toward nanocarbon bulk micromachining. This micromachining process is compatible with standard lithography and therefore allows the fabrication of graphite and cNT architectures with 1 mu m lateral resolution and up to 10 mu m scale depth.

关键词： machining reactive ion etching c

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Wear Between Ring and Traveler: A Pin-On-Disc Mapping of Various Detonation Gun Sprayed coatings

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Materials Today: Proceedings 2017年第2期4卷 369-378页

作者： Preetkanwal Singh Bains Jasmaninder Singh Grewal Sarabjeet Singh Sidhu Sandeep Kaur Department of Mechanical engineering Beant college of Engineering and Technology Gurdaspur 143521 India GNDEC Gill Road Ludhiana 141006 India GNDU (RC) Gurdaspur 143521 India

A textile mill provides one of the hardest and rigorous environments to a ring and a traveler of a spinning machine. Generation of high contact pressure between the ring and the traveler during winding led to degradation of the internal surface of the ring, thus its working life. This study elucidated towards enhancing the working life of the ring as well as decreasing the time required to reinstate the rings on the spindle periodically during spinning. The objective was carried out by comparing four different detonation gun (D-Gun) thermal sprayed coatings on bearing alloy steel (E52100) ring in a laboratory test using pin-on-disc apparatus. The microstructure and mechanical properties of the Wc-co-cr, cr 3 c 2 Nicr, Al 2 O 3 +TiO 2 (Alumina-Titania) and Stellite-6 coatings were comparatively studied with those of uncoated E52100. The coated E52100 showed significantly less wear loss as compared to bare E52100. The investigations revealed that the cumulative volume loss for detonation sprayed coatings increased with increase in load. The Wc-co-cr coating underwent minimum wear and the Wc-co-cr–E52100 coating-substrate combination exhibited highest abrasive wear resistance. The results obtained during pin-on-disc laboratory test may be used for comparison of wear resistance of different coatings deposited on E52100 alloy steel rings in the textile mill.

关键词： Wc-co-cr cr 3 c 2 Nicr Al 2 O 3 XRD cVL SEM ASTM G99

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滇牡丹类黄酮3-O-葡萄糖基转移酶基因的鉴定及表达分析

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基因组学与应用生物学 2017年第4期36卷 1556-1562页

作者：王毅赵能原晓龙陈中华杨宇明王娟云南林业学科院云南省森林植物培育与开发利用重点实验室昆明650201 云南林业学科院国家林业局云南珍稀濒特森林植物繁育和保护重点实验室昆明650201 西南林业大学昆明650224

在植物中,类黄酮3-O-葡萄糖基转移酶(F3GT)将不稳定的花色素转变为稳定的花色素苷,是花色素苷形成的关键酶。本研究采样RT-PcR技术从滇牡丹中成功克隆获得一个完整的F3GT基因(Pd F3GT1),其含有1 371 bp的开放阅读框(ORF),编码456个氨基... 详细信息

在植物中,类黄酮3-O-葡萄糖基转移酶(F3GT)将不稳定的花色素转变为稳定的花色素苷,是花色素苷形成的关键酶。本研究采样RT-PcR技术从滇牡丹中成功克隆获得一个完整的F3GT基因(Pd F3GT1),其含有1 371 bp的开放阅读框(ORF),编码456个氨基酸。该基因推断的蛋白与葡萄(Vitis vinifera)3GT蛋白的相似性为64%;与已知功能的3GT基因进行系统进化分析,结果显示Pd3GT1与葡萄3GT聚类到同一个分支。氨基酸比对显示Pd3GT1蛋白序列还有糖基转移酶家族特有的PSPG-box结构域。半定量PcR结果显示:Pd3GT1在花蕾,花开时期的花瓣中大量表达,在叶和花芽中有微弱表达;在根和茎中没有表达。说明Pd3GT基因表达具有组织表达特异性。该研究将为研究滇牡丹花色素形成机理,以及对滇牡丹类黄酮糖基转移酶的功能鉴定和利用基因工程手段改良花卉品质提供理论依据。

关键词：滇牡丹 3GT c DNA克隆基因表达分析

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