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Direct growth of single-walled carbon nanotubes on substrates

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Chinese Science Bulletin 2012年第2期57卷 225-233页

作者： PENG Fei LIU Yu cui rongli GAO DongLiang YANG Feng LI Yan Beijing National Laboratory for Molecular Sciences National Laboratory of Rare Earth Material Chemistry and ApplicationKey Laboratory forthe Physics and Chemistry of NanodevicesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

As one of the most promising candidate material for next generation electronic devices,the reliable and controllable synthesis of high quality single-walled carbon nanotubes(SWNTs) has long been an essential and important issue in the *** growth of SWNTs on flat substrates by chemical vapor deposition(CVD) process is the best way to obtain SWNTs because it is immediately ready for building *** orientation of the SWNTs has been well controlled by gas flow or substrate lattice during the CVD growth *** chirality and structure control of SWNTs is still a big ***,the conductivity selective growth has already partially *** catalysts have been explored to obtain SWNTs of higher *** with the further progress in the study of the SWNT growth,the precise control over the orientation,position and conductivity of SWNTs is expected to meet the requirements of carbon-based nanoelectronics.

关键词：单壁碳纳米管直接生长衬底化学气相沉积结构控制 SWNTs 纳米电子学电子设备

Helicobacter pylori infection： an overview in 2013, focus on therapy

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Chinese Medical Journal 2014年第3期127卷 568-573页

作者： cui rongli Zhou Liya Department of Gastroenterology Peking University Third Hospital Beijing 100191 China

Objective This article aimed to review the incidence of Helicobacterpylori （***） infection and its *** sources Relevant articles published in English were identified by searching in PubMed from 2000 to 2013,with keywords ＂***＂.Important references from selected articles were also retrieved from Elsevier,Wiley,EBSCO,and *** Chinese articles published were searched from China National Knowledge Infrastructure （CNKI）.Study selection Articles about ＂prevalence＂,＂gastric carcinoma＂,＂peptic ulcer＂,＂gastroesophageal reflux disease＂,＂functional dyspepsia＂,＂pathogenic mechanism＂,＂therapy＂,＂eradication rate＂,＂antibiotic resistance＂,and ＂gene polymorphisms＂ were *** The decreased infection rates of *** could also be linked to the changed disease spectrum,such as the decreased morbidity and recurrence rate of ***-related peptic ulcer,and the increased morbidity of gastroesophageal *** different treatment regimens have been used for *** infection,the *** eradication rate declined *** to primary resistance to antibiotics,the gene polymorphism of host and infected strain,and the therapy regimes,*** eradication became even more *** The prevalence of ***/ori infection had been decreasing,but the rate of eradication failure has dramatically risen in many countries due to resistance to *** therapy in clinical practice is becoming proqressively more difficult.

关键词： Helicobacter pylori antibiotic resistance prevalence therapy

Novel carbon nanohybrids as highly efficient magnetic resonance imaging contrast agents

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Nano Research 2015年第4期8卷 1259-1268页

作者： rongli cui Juan Li Huan Huang Mingyi Zhang Xihong Guo Yanan Chang Min Li Jinquan Dong Baoyun Sun Gengmei Xing CAS Key Laboratory for Biomedical Effects of Nanomaterial & Nanosafety Institute of High Energy Physics Chinese Academy otScience (CAS) Beijing 700049 China

Novel carbon nanohybrids based on unmodified metallofullerenes have been successfully fabricated for use as a new magnetic resonance imaging （MRI） contrast agent. The nanohybrids showed higher R1 relaxivity and better brightening effect than Gd@C82（OH）x, in Tl-weighted MR images in vivo. This is a result of the proton relaxivity from the original gadofullerenes, which retained a perfect carbon cage structure and so might completely avoid the release of Gd^3＋ ions. A ＂secondary spin-electron transfer＂ relaxation mechanism was proposed to explain how the encaged Gd^3＋ ions of carbon nanohybrids interact with the surrounding water molecules. This approach opens new opportunities for developing highly efficient and low toxicity MRI contrast agents.

关键词： graphene oxide metallofullerene magnetic resonanceimaging (MRI) nanohybrids

Different mechanisms of improving CH_(3)NH_(3)PbI_(3) perovskite solar cells brought by fluorinated or nitrogen doped graphdiyne

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Nano Research 2022年第1期15卷 573-580页

作者： Huan Huang Bing Liu Dan Wang rongli cui Xihong Guo Ying Li Shouwei Zuo Zi Yin Huanhua Wang Jing Zhang Hui Yuan Lirong Zheng Baoyun Sun CAS Key Lab for Biomedical Effects of Nanomaterials&Nanosafety Institute of High Energy PhysicsChinese Academy of ScienceBeijing 100049China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

Fluorinated and nitrogen-doped graphdiyne(F/N-GDY)have been used in the active layer of perovskite solar cells(PSCs)for the first *** introduction of heteroatoms turns out to be an effective method for boosted solar cells performance,which increases by 32.8%and 33.0%,better than the pristine or GDY doped *** enhanced performance can be attributed firstly to the superiority of F/N-GDY originated from the unique structure and optoelectronic properties of ***,both can further reduce surface defects and improve surface and bulk crystallinity than pristine ***'s more,efficiency increase caused by F-GDY is mainly attributed to the improvement of fill factor(FF),while the higher short-circuit current(Jsc)plays more important role by N-GDY *** importantly,the detailed mechanism brought about by doping of F-GDY or N-GDY is expounded by systematical characterizations,especially the synchrotron radiation *** of F-GDY causes Pb and forms new Pb-F bonds between F-GDY and Pb *** of N-GDY or GDY brings about Pb(N-GDY doping induces more deviation than that of GDY due to the participation of imine N),improving its electron density and conductivity.

关键词： perovskite solar cells graphdiyne grazing incidence X-ray diffraction(GIXRD) X-ray absorption fine structure(XAFS) synchrotron radiation technique

Highly delocalized endohedral metal in Gd@C2v（9）-C82 metallofullerenes co-crystallized with α-Se

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Nano Research 2018年第4期11卷 2277-2284页

作者： Cheng Li Xuejiao J. Gao Huanli Yao Huan Huang rongli cui Xihong Guo Lele Zhang Bing Liu Binggang Xu Weiqun Shi Jinquan Dong Lai Feng Xingfa Gao Baoyun Sun CAS Key Lab for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China University of Chinese Academy of Sciences Beijing 100049 China College of Physics Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215006 China College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 China

A new Gd@C2v（9）-C82·2.5（S8）·0.5（CS2） co-crystal was prepared for the first time and characterized by single-crystal X-ray diffraction （XRD）. The analysis dearly showed that, even though the C2v（9）-C82 cage is fully ordered, the endohedral Gd atoms are highly disordered. This result indicates the presence of highly delocalized endohedral Gd atoms, which has never been reported before. Density functional theory （DFT） calculations were used to rationalize the XRD results. The calcula- tions reveal the presence of two local energy minima, a and b, with the latter existing as four conformers b1-b4. Whereas the energy difference between the two minima is calculated only - 10 kcal/mol, their interconversion is almost impossible due to a high energy barrier, of up to 35.98 kcal/mol. This suggests the existence of multiple low-energy positions for the endohedral Gd atom. In addition, a remarkable electron transfer from the C2d9）-C82 cage to the S8 moieties was demonstrated, which might result in a modified endohedral environment and further contribute to the occurrence of delocalized endohedral Gd atoms.

关键词： metallofullerenes sulfur structure elucidation delocalization density functional theory(DFT) calculations

Relationship of Helicobacterpylori eradication with gastric cancer and gastric mucosal histological changes： a 10-year follow-up study

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Chinese Medical Journal 2014年第8期127卷 1454-1458页

作者： Zhou Liya Lin Sanren Ding Shigang Huang Xuebiao Jin Zhu cui rongli Meng Lingmei Li Yuan Zhang Li Guo Changji Xue Yan Yan Xiu'e Zhang Jing Department of Gastroenterology Third Hospital of Peking University Beijing 100191 China

Background Helicobacter pylori （Hp） is a common and potentially curable cause of gastric mucosa lesion. This study investigated the relationship of Hp infection with histological changes in gastric mucosa and gastric cancer in Hp-positive patients compared with Hp-eradication patients followed up for ten years. Methods From an initial group of 1 006 adults, 552 Hp-positive subjects were randomly assigned to a treatment group （T; n=276） or a placebo group （P; n=276）. In the randomized, double-blind, placebo-controlled, parallel trial, T group subjects received oral doses of omeprazole, amoxicillin and clarithromycin for 1 week; those in the P group received a placebo. One month after treatment ended, a 13C urea breath test was performed, and Hp was undetectable in 88.89% of the T group. All subjects were followed at 1, 5, 8, and 10 years after treatment, with endoscopy and biopsies for histological examination. Results Gastric mucosa inflammation was significantly milder in the T group than that in the P group one year after Hp eradication and this persisted for 10 years. Glandular atrophy and intestinal metaplasia （IM） had deteriorated in both groups during ten years. However, the increased score of glandular atrophy at both the gastric antrum and corpus, and IM only at the gastric antrum, in the P group was more obvious than that in the T group. During the 10 years, 9 patients were diagnosed with gastric cancer （2 in the T group; 7 in the P group; P=0.176）. When mucosal atrophy was absent at the gastric antrum and corpus when entering the study, the incidence of gastric cancer in the P group （n=6） was much higher than that in the T group （n=0, P=0.013）. Conclusions Hp eradication may significantly diminish and delay the development of IM and atrophy gastritis. Hp especially in the early stage of Hp infection. and help halt progression of gastric mucosal inflammation eradication is helpful for reducing the risk for gastric cancer,

关键词： Helicobacter pylori gastric cancer atrophic gastritis intestinal metaplasia

基于熵权VIKOR法的智慧物流园信息平台评价

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物流技术 2017年第1期36卷 63-68,88页

作者：石荣丽崔洪瑞广东药科大学医药商学院广东广州510006

通过对广东省近110家物流园区信息化情况的调研、专家访谈,结合平衡计分卡的思路,设计了一套智慧物流园区信息平台评价指标体系,结合熵权法和VIKOR评价法作出综合评价,构建了智慧物流园区物流信息平台评价模型,并结合案例进行了实证分析... 详细信息

通过对广东省近110家物流园区信息化情况的调研、专家访谈,结合平衡计分卡的思路,设计了一套智慧物流园区信息平台评价指标体系,结合熵权法和VIKOR评价法作出综合评价,构建了智慧物流园区物流信息平台评价模型,并结合案例进行了实证分析,以期为智慧物流园区物流信息平台评价提供一个新思路和方法。

关键词：智慧物流园熵权法 VIKOR法

胃息肉的临床病理特征及其与癌变和幽门螺杆菌感染关系的研究

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胃肠病学 2009年第8期14卷 469-472页

作者：张贺军丁士刚金珠崔荣丽北京大学第三医院消化科 100191

背景:目前对胃息肉的研究远不及结肠息肉,胃息肉与癌变以及幽门螺杆菌(***)感染的关系存在较多争议。目的:总结胃息肉的临床病理特征,并分析不同类型胃息肉与癌变和***感染的关系。方法:回顾性分析北京大学第三医院2003年1月～2008年12... 详细信息

背景:目前对胃息肉的研究远不及结肠息肉,胃息肉与癌变以及幽门螺杆菌(***)感染的关系存在较多争议。目的:总结胃息肉的临床病理特征,并分析不同类型胃息肉与癌变和***感染的关系。方法:回顾性分析北京大学第三医院2003年1月～2008年12月经病理检查证实的胃息肉患者,分析不同类型胃息肉与肠化生、异型增生和癌变以及***感染的关系。结果:共检出1825例胃息肉患者,检出率4.3%。男女之比为1:2.3,66.3%为单发性息肉;胃底腺息肉、增生性息肉、腺瘤性息肉、炎性息肉和并发息肉(2种息肉同时发生于同一病例)分别占62.5%、32.2%、0.8%、1.7%和2.8%。贲门、胃底体和胃窦是增生性息肉较常见的发生部位。增生性息肉肠化生率和异型增生率均显著高于胃底腺息肉(5.3%对0.2%,7.2%对0.4%,P<0.001)。2例增生性息肉发生癌变,癌变率0.3%。增生性息肉***感染率显著高于胃底腺息肉(36.5%对8.0%,P<0.001)。结论:胃息肉检出率较低,以胃底腺和增生性息肉多见,并发息肉并非罕见。增生性息肉的肠化生率、异型增生率和***感染率均高于胃底腺息肉,且其可发生癌变。增生性息肉的发生可能与***感染有关。

关键词：息肉化生异型增生癌变螺杆菌,幽门

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胃增生性息肉的临床、内镜及病理特点分析

中华医学杂志 2015年第28期95卷 2285-2287页

作者：孟灵梅周丽雅李渊张贺军金珠崔荣丽北京大学第三医院消化内科 100191

目的分析胃增生性息肉的临床、内镜及病理特点.方法回顾性分析北京大学第三医院2005年1月至2014年10月经胃镜及病理学检查确诊为胃增生性息肉的1 676例患者的资料.结果胃增生性息肉患者中女性占61.46％（1 030/1 676）;≥60岁者占60... 详细信息

目的分析胃增生性息肉的临床、内镜及病理特点.方法回顾性分析北京大学第三医院2005年1月至2014年10月经胃镜及病理学检查确诊为胃增生性息肉的1 676例患者的资料.结果胃增生性息肉患者中女性占61.46％（1 030/1 676）;≥60岁者占60.50％（1 014/1 676）;息肉多分布于胃底及胃体,占65.21％（1 093/1 676）;息肉合并异型增生占5.31％（89/1 676）,合并肠化生占5.61％（94/1 676）;息肉局灶癌变占0.30％（5/1 676）.背景胃黏膜中幽门螺杆菌相关胃炎占21.96％（368/1 676）,自身免疫性胃炎占14.20％（238/1 676）,肠化生占22.61％（379/1 676）,异型增生占6.56％（110/1 676）,腺癌占0.78％（13/1 676）,类癌占0.18％（3/1 676）.结论胃增生性息肉多分布于近端胃,息肉组织可以发生癌变.息肉背景胃黏膜存在癌及癌前病变,内镜检查时应重视息肉背景胃黏膜检查.

关键词：息肉胃螺杆菌,幽门自身免疫性胃炎背景胃黏膜