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Chinese Chemical Letters 2014年第4期25卷 517-522页

作者： Long Zhang Yang-ping Wen Yuan-Yuan Yao Zi-Fei Wang xue-Min Duan Jing-Kun xu School of Pharmacy Jiangxi Science & Technology Normal University Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University

A simple, sensitive, and reliable method for the voltammetric determination of bisphenol A （BPA） by using carboxylic group functionalized single-walled carbon nanotubes （f-SWCNT）/carboxylic-functionalized poly（3,4-ethylenedioxythiophene）（PC4） complex modified glassy carbon electrode （GCE） has been successfully developed. The electrochemical behavior of BPA at the surface of the modified electrode is investigated by electrochemical techniques. The cyclic voltammetry results show that the as-prepared electrode exhibits strong catalytic activity toward the oxidation of BPA with a well-defined anodic peak at 0.623 V in PBS （0.1 mol/L, pH 7.0）. The surface morphology of the 3D network of composite film is beneficial for the adsorption ofanalytes. Under the optimized conditions, the oxidation peak current is proportional to BPA concentration in the range between 0.099 and 5.794 μmol/L （R2 = 0.9989）, with a limit of detection of 0.032 μmol/L （SIN = 3）. The enhanced performance of the sensor can be attributed to the excellent electrocatalytic property off-SWCNT and the extraordinary conductivity of PC4. Furthermore, the proposed modified electrode displays high stability and good reproducibility. The good result on the voltammetric determination of BPA also indicates that the asfabricated modified electrode will be a good candidate for the electrochemical determination and analysis of BPA.

关键词： Bisphenol A Electrochemical sensor Voltammetric determination Poly(3 4-ethylenedioxythiophene) derivative

One-pot synthesis of Bi2Se3 nanostructures with rationally tunable morphologies

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Nano Research 2015年第11期8卷 3612-3620页

作者： Xianli Liu Jinwei xu Zhicheng Fang Lin Lin Yu Qian Youcheng Wang Chunmiao ye Chao Ma Jie Zeng Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Strongly-Coupled Ouantum Matter Physics of Chinese Academy of Sciences Center of Advanced Nanocatalysis (CAN-USTC) & Department of Chemical Physics University of Science and Technology of China Hefei 230026 China

Shape control has proven to be a powerful and versatile means of tailoring the properties of Bi2Se3 nanostructures for a wide variety of applications. Here, three different Bi2Se3 nanostructures, i.e., spiral-type nanoplates, smooth nanoplates, and dendritic nanostructures, were prepared by manipulating the supersaturation level in the synthetic system. This mechanism study indicated that, at low supersaturation, defects in the crystal growth could cause a step edge upon which Bi2Se3 particles were added continuously, leading to the formation of spiral-type nanoplates. At intermediate supersaturation, the aggregation of amorphous Bi2Se3 particles and subsequent recrystallization resulted in the formation of smooth nanoplates. Furthermore, at high supersaturation, polycrystalline Bi2Se3 cores formed initially, on which anisotropic growth of Bi2Se3 occurred. This work not only advances our understanding of the growth mechanism but also offers a new approach to control the morphology of Bi2Se3 nanostructures.

关键词： shape control Bi2Se3 nanostructures supersaturation mechanism study

基于DO-178C的无关代码和非激活代码适航研究

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航空计算技术 2024年第4期54卷 76-79页

作者：李燕琳郑雪峰潘路平钟旭旭曾析胡胤杰中国民用航空适航审定中心成都机载设备审定分中心四川成都610000 中电科航空电子有限公司四川成都611000 商飞软件有限公司四川成都614000

目前我国民用机载设备自研取证项目数量剧增,其承载的功能也正往高关键等级发展。驻留于其中的机载软件,往往因使用了开源代码、库函数、底层驱动等非自研软件模块,在满足DO-178C标准规定的结构覆盖要求时,因代码类型判定不准确,出现适... 详细信息

目前我国民用机载设备自研取证项目数量剧增,其承载的功能也正往高关键等级发展。驻留于其中的机载软件,往往因使用了开源代码、库函数、底层驱动等非自研软件模块,在满足DO-178C标准规定的结构覆盖要求时,因代码类型判定不准确,出现适航方案迎审不通过的问题。通过解析DO-178C标准中的理论核心要点,提出了一种代码类型判定流程。总结国内外成功适航经验,对不同项目应用了本判定流程,结合适航关注点给出了实践建议,望给后续项目提供参考和便利。

关键词： DO-178C 结构覆盖无关代码死代码非激活代码

Detector control system for Daya Bay Reactor Neutrino Experiment

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Science China(Technological Sciences) 2013年第8期56卷 1966-1973页

作者： ZHANG ShuHua WANG YiFang ye Mei LI XiaoNan ZHANG YinHong xu Jun MIN Jian DU XiaoFeng ZENG Lei Institute of High Energy Physics Chinese Academy of Sciences

The Daya Bay Reactor Neutrino Experiment is to measure the smallest mixing angle θ*** experiment contains three major experiment halls,Daya Bay near site,Linao near site and far site,and two major kinds of detectors,antineutrino detector which is to detect the antineutrinos by the inverse beta-decay reaction in Gd-LS,and muon detector which is to study and reject cosmogenic *** goal of the detector control system(DCS)is to operate and detect the detectors and keep them running in *** consideration of the limited fund of this system and manpower of working on this system,the LabVIEW is chosen to develop the detector control *** architecture of DCS adopts the distributed data management which is based on client-server *** server part is to detect and operate parameters from hardware,save data to database and release data to clients,the client is to receive data from the *** detector control system contains three parts:the hardware part,the local control system and the global control *** local control system includes high voltage supply system,low voltage supply system,VME crate system,temperature and humidity system,gas pressure system,and so on.

关键词： antineutrino detector muon detector detector control system distributed data management client-server model

One-step co-electrodeposition of graphene oxide doped poly(hydroxymethylated-3,4-ethylenedioxythiophene) film and its electrochemical studies of indole-3-acetic acid

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Chinese Chemical Letters 2014年第4期25卷 511-516页

作者： Zi-Lan Feng Yuan-Yuan Yao Jing-Kun xu Long Zhang Zi-Fei Wang Yang-ping Wen Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University College of Science Jiangxi Agricultural University

A novel graphene oxide （GO） doped poly（hydroxymethylated-3,4-ethylenedioxythiophene）（PEDOTM） film has been achieved via one-step co-electrodeposition and utilized for electrochemical studies of indole-3-acetic acid （IAA）. The incorporation of GO into PEDOTM film facilitated the electrocatalytic activity and exhibited a favorable interaction between the PEDOTM/GO film and the phytohormone during the oxidation of IAA. Under optimized conditions, differential pulse voltammetry and square wave voltammetry were used for the quantitative analysis of IAA, respectively, each exhibiting a wide linearity range from 0.6 μmol L-1 to 10 μmol L-1 and 0.05 μmol L-1 to 40 μmol L-1, good sensitivity with a low detection Iimit of 0.087 μmol L-1 and 0.033μmol L T, respectively, as well as good stability. With the notable advantages of a green, sensitive method, expeditious response and facile operation, the as-prepared PEDOTM/GO organic-inorganic composite film provides a promising platform for electrochemical studies of IAA.

关键词： Co-electrodeposition EDOT derivatives Graphene oxide Indole-3-acetic acid

Mesoporous silica rods with cone shaped pores modulate inflammation and deliver BMP-2 for bone regeneration

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Nano Research 2020年第9期13卷 2323-2331页

作者： Chun xu Lan Xiao Yuxue Cao Yan He Chang Lei Yin Xiao Wujin Sun Samad Ahadian xueting Zhou Ali Khademhosseini Qingsong ye School of Dentistry The University of QueenslandHerstonQLD4006Australia Center for Minimally Invasive Therapeutics(C-MIT) University of CaliforniaLos Angeles(UCLA)Los AngelesCA 90095USA Department of Bioengineering University of CaliforniaLos Angeles(UCLA)Los AngelesCA 90095USA Institute of Health and Biomedical Innovation Queensland University of TechnologyKelvin Grove CampusBrisbane4006Australia School and Hospital of Stomatology Wenzhou Medical Universityy Wenzhou 325035China Department of Oral and Maxillofacial Surgery Massachusetts General Hospital and Harvard School of Dental MedicineBostonMA 02114USA Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbaneQLD 4072t Australia Department of Microbiology Immunology and Molecular GeneticsUniversity of CaliforniaLos Angeles(UCLA)Los AngelesCA 90095USA Department of Chemical and Biomolecular Engineering University of CaliforniaLos Angeles(UCLA)Los AngelesCA 90095USA Department of Radiological Sciences University of CaliforniaLos Angeles(UCLA)Los AngelesCA 90095USA Terasaki Institute for Biomedical Innovation Los AngelesCA90095USA Present address:Center of Regenerative Medicine Renmin Hospital of Wuhan UniversityWuhan UniversityWuhan 430060China

Biomaterials with suitable osteoimmunomodulation properties and ability to deliver osteoinductive biomolecules,such as bone morphogenetic proteins,are desired for bone ***,we report the development of mesoporous silica rods with large cone-shaped pores(MSR-CP)to load and deliver large protein *** is noted that those cone-shaped pores on the surface modulated the immune response and reduced the pro-inflammatory reaction of stimulated ***,bone morphogenetic proteins 2(BMP-2)loaded MSR-CP facilitated osteogenic differentiation and promoted osteogenesis of bone marrow stromal *** vivo tests confirmed BMP-2 loaded MSR-CP improved the bone regeneration *** study provides a potential strategy for the design of drug delivery systems for bone regeneration.

关键词： mesoporous silica rod bone regeneration cone shaped pores morphogenetic proteins 2(BMP-2)delivery osteoimmunomodulation

The Geological Characteristics of Chengkou Type Shale Gas of Lower Cambrian in Dabashan

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Acta Geologica Sinica(English Edition) 2015年第A01期89卷 294-296页

作者： ye Jun LIU bin WANG Sheng YU ping CHENG Jing SDIC Chongqing Shale Gas Development & Utilization CO.Ltd

1 Introduction After the successful implementation of large-scale shale gas exploration, development and utilization in United States, the domestic shale gas exploration and development is in a rapid development.

关键词： SHALE gas RESEARCH SHALE gas industry PALEOZOIC Era CARBONATE rocks

地方应用型高校有机化学实验融入课程思政的探索与实践

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化工设计通讯 2024年第9期50卷 106-109页

作者：于洪翠于波海平徐宁陈静李久明内蒙古民族大学化学国家级实验教学示范中心内蒙古通辽028000

有机化学实验是高等院校化学、化工、食品、动医、制药、高分子材料等其他近化学类专业的必修基础课程,蕴含思政元素多,学生受益面广。基于此,以有机化学实验课程教学为载体,结合地方应用型高校的定位和人才培养方案,挖掘思政元素并找... 详细信息

有机化学实验是高等院校化学、化工、食品、动医、制药、高分子材料等其他近化学类专业的必修基础课程,蕴含思政元素多,学生受益面广。基于此,以有机化学实验课程教学为载体,结合地方应用型高校的定位和人才培养方案,挖掘思政元素并找准切入点,坚持做好以“五个结合”促进“五个树立”。同时,实行渗透思政元素的过程性考核,将课程思政与有机化学实验教学结合起来,深入贯彻知识传授、能力培养、价值塑造“三位一体”教育理念。

关键词：有机化学实验课程思政思政元素

不同工艺酱香型白酒中非挥发性有机酸及酚酸的差异分析

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酿酒科技 2024年第7期 17-24,42页

作者：骆茂香徐兴江陈仁远叶才虎邱树毅贵州省酒类产品质量检验检测院贵州仁怀564500 贵州大学酿酒与食品工程学院贵州贵阳550025 贵州茅台酒股份有限公司贵州仁怀564500

白酒中的非挥发性风味物质对白酒的滋味和品质有重要影响。截至目前,对酱香型白酒中非挥发性风味物质的研究很少,且大多集中在部分非挥发性有机酸类(如乳酸、长链脂肪酸)。因此,全面解析酱香型白酒中的非挥发性风味物质及关键风味化合... 详细信息

白酒中的非挥发性风味物质对白酒的滋味和品质有重要影响。截至目前,对酱香型白酒中非挥发性风味物质的研究很少,且大多集中在部分非挥发性有机酸类(如乳酸、长链脂肪酸)。因此,全面解析酱香型白酒中的非挥发性风味物质及关键风味化合物组成差异,对全面深入解密酱香型白酒具有重要意义。本研究采用水浴浓缩结合氮吹、高效液相色谱(High performance liquid chromatography,HPLC)、高效液相色谱串联质谱法(High performance liquid chromatography-mass spectrometry-mass spectrometry,HPLC-MS/MS)对贵州仁怀产区酱香型白酒中的非挥发性有机酸及酚酸类物质进行定性定量分析,并结合多元统计分析方法对不同酱香型白酒样品进行差异分析,试图探索出可以区分不同酱香型白酒的分析方法。结果表明,在不同生产工艺酒样中各目标化合物种类及含量存在差异,在坤沙酒中检出14种非挥发性有机酸和4种酚酸类物质,翻沙酒样中检出13种非挥发性有机酸和1种酚酸类物质,碎沙酒样中检出14种非挥发性有机酸及1种酚酸类物质;已检出的各非挥发性风味物质含量均在坤沙酒样中最高,其中乳酸、马来酸、富马酸、阿魏酸含量在坤沙酒中高出翻沙与碎沙两种酒样几倍,且只在坤沙酒中检出原儿茶酸等3种酚酸,可利用上述7种非挥发性风味物质区分坤沙酒与翻沙、碎沙酒;根据PCA及OPLS-DA分析,构建了坤沙、翻沙及碎沙3种大曲酱香型白酒的鉴别模型,可基本实现3种工艺酒样的鉴别;VIP分析筛选出的4种潜在差异物质可用于区分3种工艺,即乳酸、油酸、亚油酸及棕榈酸,乳酸VIP值(3.1343)最高,进行单因素方差分析发现,4种潜在差异物质在坤沙、碎沙和翻沙3种酒样中差异显著(P<0.05)。

关键词：酱香型白酒液相色谱(LC) 液质联用法(LC-MS) 非挥发性有机酸化学计量学鉴别模型

Antibacterial sorbicillin and diketopiperazines from the endogenous fungus Penicillium sp. GD6 associated Chinese mangrove Bruguiera gymnorrhiza

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Chinese Journal of Natural Medicines 2018年第5期16卷 358-365页

作者： JIANG Cheng-Shi ZHOU Zhen-Fang YANG Xiao-Hong LAN Le-Fu GU Yu-Cheng ye Bo-ping GUO Yue-Wei China State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 China School of Biological Science and Technology University of Jinan Jinan 250022 China School of Life Science & Technology China Pharmaceutical University Nanjing 210009 China Syngenta Jealott's Hill International Research Centre Berkshire RG42 6EY United Kingdom

One new sorbicillin derivative, 2-deoxy-sohirnone C(1), one new diketopiperazine alkaloid, 5 S-hydroxynorvalineS-Ile(2), and two naturally occurring diketopiperazines, 3 S-hydroxylcyclo(S-Pro-S-Phe)(3) and cyclo(S-Phe-S-Gln)(4), together with three known compounds were isolated from the Chinese mangrove endophytic fungus Penicillium sp. GD6. Their structures were determined on the basis of extensive spectroscopic analyses and by comparison with literature data. The absolute configuration of 3-hydroxyl moiety in 3 was determined by Mosher's method, while the absolute stereochemistry of 2 and 4 was established by comparison with the CD spectra of natural and synthesized diketopiperazines. Compound 1 showed moderate antibacterial activity against Methicillin-resistant Staphylococcus aureus with a MIC value of 80 μg·m L^(-1).

关键词： Mangrove Penicillium sp. Sorbicillin derivative Diketopiperazine alkaloids