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Science China Chemistry 2014年第3期57卷 402-408页

作者： WANG ShiFa ZHANG ChuanFei SUN GuangAi CHEN Bo XIANG Xia ding qingping ZU XiaoTao School of Physical Electronics University of Electronic Science and Technology of China Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics

YMn2O5nanorods were synthesized through a modified polyacrylamide gel *** synthesis strategy in this work is based on a sol-gel process using a polyacrylamide gel method in which oxalic acid,citric acid or tartaric acid is employed as the chelating *** the gel routes,oxalic acid was used as a carboxyl chelating agent,while citric acid or tartaric acid was a carboxyl and hydroxyl chelating *** as-prepared samples were characterized by means of techniques such as X-ray powder diffraction(XRD)measurement,thermogravimetric analysis(TG),differential scanning calorimetry analysis(DSC),Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),thermal expansion measurement and field-emission scanning electron microscopy(SEM)*** was found that oxalic acid is the best chelating agent with Y(NO3)3·6H2O and Mn(CH3COO)2·4H2O as precursors to prepare a single orthorhombic YMn2O5nanorods at 1000°*** electron microscope observation shows that the morphology of YMn2O5powders is significantly dependent on the chelating *** peaks(single orthorhombic YMn2O5nanorods)at 642,600,573,546,521,493,486,468,448 and 400cm?1were observed from FTIR *** phase,surface morphology and chelation mechanisms of YMn2O5samples have been discussed on the basis of the experimental results.

关键词： YMn2O5 chelating agent thermal expansion nanorods

Synthesis of nickel selenide thin films for high performance all-solid-state asymmetric supercapacitors

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Chinese Chemical Letters 2020年第9期31卷 2275-2279页

作者： Hao Li Jiangfeng Gong Jing-Chang Li Xincheng Zhang Chunmei Tang Hongbing Yao qingping ding College of Science Hohai UniversityNanjing 210098China Ames Laboratory US DOEAmesIA 50011United States

As a significant semiconductor,nickel selenide shows enormous potential and extensive application pro spects in the field of sensor,photocatalysis and supercapacito *** this paper,nickel selenide(Ni3Se2,NiSe) thin films were successfully fabricated on stainless-steel sheet using a facile,effective electrodeposition *** morphologies,microstructures and chemical compositions of the thin films are characterized *** tests exhibit that the Ni3Se2 and NiSe possess high specific capacitance of 581.1 F/g and 1644.7 F/g,respectively.A flexible,all-solid-state asymmetric supercapacitor is assembled by utilizing NiSe film as positive electrode and activated carbon as negative *** solid device delivers a high areal capacitance of 27.0 mF/cm2 at the current density of 0.7 mA/*** maximum volumetric energy density and powerdensity of the NiSe//AC asymmetric SCs can achieve 0.26 mWh/cm3 and 33.35 mW/cm3,*** device shows robust cycling stability with 84.6% capacitance retention after 10,000 cycles,outstanding flexibility and satis factory mechanical ***,two devices in series can light up a red light-emitting diode,which displayed great potential applications for energy storage.

关键词： Nickel selenide Electrochemical properties Asymmetric All-solid-state Supercapacitors

Ultrapermeable membranes based on connected cluster of hollow polydimethylsiloxane nanoparticles for gas separation

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Particuology 2023年第8期79卷 45-53页

作者： Xiaoli ding Fangfang Tan Hongyong Zhao qingping Xin Yuzhong Zhang State Key Laboratory of Separation Membranes and Membrane Processes National Center for International Joint Research on Separation MembranesTiangong UniversityTianjin300387China Tianjin Key Laboratory of Hollow Fiber Membrane Materials and Processes(Tiangong University) Tianjin300387China

Mixed matrix membranes(MMMs)with the performance between the matrix and the filler is a promising strategy for membranes with excellent gas *** this study,the hollow polydimethylsiloxane nanoparticles were synthesized and then incorporated with the poly(oxide ethylene)monomer and tri-functional cross-linker to form mixed matrix membranes by in situ *** hollow nanoparticles formed the independent closed nanocavities in membranes,which enhanced the gas permeability contributed by both the improved diffusivity and *** high loading,the hollow polydimethylsiloxane nanoparticle was converted into the continuous phase with the cross-linked poly(oxide ethylene)as the dispersed *** preferred to permeate through the connected cluster of hollow polydimethylsiloxane nanoparticles,finally leading to ultrahigh gas per-meabilities far going beyond the instinct values of polydimethylsiloxane and the cross-linked poly(oxide ethylene).The optimized membrane with 34 wt%hollow nanoparticles loadings exhibited ultrahigh permeabilities with the values of 44186 Barrer for CO_(2) and 11506 Barrer for O_(2),accompanied with a CO_(2)/N_(2) selectivity of 9.9 and an O_(2)/N_(2) selectivity of 2.6,which exceeded the 2008 Robeson upper bound for O_(2)/N_(2) and located at the 2008 Robeson upper bound for CO_(2)/N_(2).

关键词： Hollow nanoparticles Polydimethylsiloxane nanoparticles Mixed matrix membranes Nanocavity Gas separation

绿豆7S球蛋白基因鉴定及在籽粒发育中的表达分析

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食品科学 2024年第12期45卷 109-115页

作者：丁冬会张雨朋周人玲席武洋耿旎周常玮赵青平刘嘉斐杨树琼南阳师范学院生命科学与农业工程学院河南南阳473061

为阐明绿豆7S(Vigna radiata 7S,Vr7S)球蛋白基因的基本性质及其在籽粒生长发育过程中的表达模式,本研究运用生物信息学、反转录聚合酶链式反应(reverse transcription-polymerase chain reaction,RT-PCR)对10个Vr7S球蛋白基因的理化性... 详细信息

为阐明绿豆7S(Vigna radiata 7S,Vr7S)球蛋白基因的基本性质及其在籽粒生长发育过程中的表达模式,本研究运用生物信息学、反转录聚合酶链式反应(reverse transcription-polymerase chain reaction,RT-PCR)对10个Vr7S球蛋白基因的理化性质、基因结构特征、蛋白三级结构、系统发育关系及基因表达谱等进行研究。结果表明,Vr7S球蛋白基因编码的蛋白长度为246~594个氨基酸,等电点位于5.02~6.40之间,分子质量为27.82~70.02 kDa;所有Vr7S球蛋白基因包含3~7个外显子、2~6个内含子、5~8个保守基序;除Vr7S B1具有1个cupin保守结构域外,其余9个基因均含有2个cupin结构域;Vr7S球蛋白三级结构有4种类型,主要包含α-螺旋、β-链等结构;在cupin保守结构域中,绿豆和其他物种共有67个保守氨基酸残基,绿豆与赤豆7S球蛋白基因间的同源关系最近,其次是菜豆、木豆及大豆等。基于不同绿豆品种、不同发育时期籽粒的转录组测序和RT-PCR表达谱分析显示,Vr7S球蛋白基因伴随着绿豆籽粒的发育成熟呈现表达量升高的趋势,这与其他豆科物种7S球蛋白基因的表达模式一致,表明其在绿豆籽粒贮藏蛋白的生成调控过程中具有积极作用。本研究为进一步解析Vr7S球蛋白基因在绿豆籽粒发育中的生物学功能奠定了基础。

关键词：绿豆 7S球蛋白籽粒发育基因鉴定表达谱分析

Effect of Na^(+)on catalytic performance of CoCe/ZSM-5 catalysts for oxidation of toluene

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Journal of Rare Earths 2021年第4期39卷 409-418页

作者： qingping Zou Mingqing Liu Mengjie Fan Yaping ding Yingwen Chen Shubao Shen College of Biotechnology and Pharmaceutical Engineering Nanjing Tech UniversityNanjing 210009China Nanjing Institute of Environmental Sciences Ministry of Ecology and EnvironmentNanjing 210042China

A CoCe/ZSM-5 catalyst was prepared by ultrasonic-assisted impregnation for the catalytic combustion of *** study the effect of Na+on catalytic performance of CoCe/ZSM-5 catalysts,a series of different Si/Al ZSM-5 zeolites and catalysts doped with Na were *** experimental results show that 0.71 wt%Na+can inhibit active growth,generate more active small crystal grains,and promote improvement of the catalytic activity by the grain boundary segregation block mechanism,and the catalyst with 0.71 wt%of Na shows toluene conversion of 90 vol%at 250℃.Over 0.71 wt%of Na+content will neutralize the acid centre of the catalyst,lowering the specific surface area of the catalyst and resulting in a gradual decrease in the catalytic activity.

关键词： ZSM-5 zeolite Catalytic combustion Toluene Grain boundary segregation block mechanism Rare earths

注射用卡铂细菌内毒素检查的方法学评价与应用

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实用全科医学 2006年第5期4卷 600-601页

作者：宋立中石庆平丁峰安徽省蚌埠医学院附属医院医院药剂科 233004

目的验证注射用卡铂细菌内毒素检查法的可行性。方法参照《中国药典2005年版》二部附录ⅪⅩF试验方法,通过干扰/确证实验来确定注射用卡铂的有效稀释浓度和细菌内毒素检查限值。结果0.125 mg/ml供试品液无干扰作用,其细菌内毒素限值符... 详细信息

目的验证注射用卡铂细菌内毒素检查法的可行性。方法参照《中国药典2005年版》二部附录ⅪⅩF试验方法,通过干扰/确证实验来确定注射用卡铂的有效稀释浓度和细菌内毒素检查限值。结果0.125 mg/ml供试品液无干扰作用,其细菌内毒素限值符合规定。结论注射用卡铂可以通过细菌内毒素检查法来控制其细菌内毒素含量。

关键词：注射用卡铂细菌内毒素鲎试剂

小肠结肠炎耶尔森氏菌生物膜和浮游态的蛋白质组学对比分析

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现代食品科技 2024年第7期40卷 53-63页

作者：徐天翔刘鸣丁郁吴清平张菊梅王梓萌王涓华南农业大学食品学院广东省食品质量安全重点实验室广东广州510642 广东省科学院微生物研究所华南应用微生物国家重点实验室广东省微生物安全与健康重点实验室国家卫健委微生物食品营养与安全科技创新平台广东广州510070

小肠结肠炎耶尔森氏菌是革兰氏阴性食源性致病菌,能够在食物以及食品加工设备表面形成生物膜。生物膜可以增强菌株的生存能力并危害食品安全。该文以分离自速冻食品且具有强生物膜形成能力的小肠结肠炎耶尔森氏菌C1967-1作为出发菌株。... 详细信息

小肠结肠炎耶尔森氏菌是革兰氏阴性食源性致病菌,能够在食物以及食品加工设备表面形成生物膜。生物膜可以增强菌株的生存能力并危害食品安全。该文以分离自速冻食品且具有强生物膜形成能力的小肠结肠炎耶尔森氏菌C1967-1作为出发菌株。通过蛋白质组分析生物膜与浮游态细菌中的蛋白表达差异。GO富集分析表明富集程度最大的前9个GO条目中,7个条目在生物膜中呈现下调趋势。仅GO:0046873(金属离子跨膜转运蛋白活性)条目在生物膜中未呈现明显上下调趋势。KEGG富集结果表明富集程度最大的前20个KEGG通路主要涉及碳水化合物、氨基酸和脂质的代谢过程。亚细胞定位分析结果表明,45.65%的差异蛋白位于细胞质内。为进一步验证蛋白质组数据,从GO:0046873条目中筛选出生物膜上调蛋白MgtA并敲除基因mgtA。结果表明,mgtA的敲除没有抑制菌株的生长,但ΔmgtA的生物膜量下降约80%且生物膜结构松散。综上所述,研究结果为小肠结肠炎耶尔森氏菌生物膜形成机制以及其在食品行业生物膜防控提供重要理论依据。

关键词：小肠结肠炎耶尔森氏菌生物膜蛋白质组学 mgtA

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Food Safety Risks and Contributing Factors of Cronobacter spp.

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Engineering 2022年第5期8卷 128-138页

作者： Na Ling Xiuting Jiang Stephen Forsythe Danfeng Zhang Yizhong Shen Yu ding Juan Wang Jumei Zhang qingping Wu Yingwang Ye School of Food and Biological Engineering Hefei University of TechnologyHefei 230009China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Institute of MicrobiologyGuangdong Academy of SciencesGuangzhou 510070China *** Keyworth NG125GYUK

Cronobacter species are a group of Gram-negative opportunistic pathogens,which cause meningitis,sep-ticemia,and necrotizing enterocolitis in neonates and infants,with neurological sequelae in severe *** in Cronobacter has increased significantly in recent years due to its high virulence in *** this review,we summarize the current understanding of the prevalence of Cronobacter species in several important food *** discuss the response mechanisms enabling persistence in adverse growth con-ditions,as well as its *** emphasize the food safety concerns caused by Cronobacter and subsequent control methods and clinical treatments.

关键词： Cronobacter Food contamination Pathogenesis Virulence factors Stress response

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地方高校服务乡村振兴战略的途径探析

大学教育 2024年第14期 106-110页

作者：易庆平朱德艳丁建军黄业传黄仁华荆楚理工学院生物工程学院湖北荆门448000

主动服务乡村振兴战略,是地方应用型高校肩负着的服务区域经济与社会发展的职责所在。荆楚理工学院以“中国农谷”“柴湖振兴”省级战略荆门实施为契机,通过分类研究、产业调研、专题研讨开展乡村振兴人才培养的探索和实践,以提高涉农... 详细信息

主动服务乡村振兴战略,是地方应用型高校肩负着的服务区域经济与社会发展的职责所在。荆楚理工学院以“中国农谷”“柴湖振兴”省级战略荆门实施为契机,通过分类研究、产业调研、专题研讨开展乡村振兴人才培养的探索和实践,以提高涉农专业人才培养质量为核心,改革农科人才培养模式,围绕区域优势特色产业推进产业链、创新链、教育链紧密结合,构建了地方高校服务乡村振兴的新体制机制。

关键词：地方高校服务乡村振兴人才培养途径

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Smart light-responsive hierarchical metal organic frameworks constructed mixed matrix membranes for efficient gas separation

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Green Chemical Engineering 2022年第1期3卷 71-82页

作者： qingping Xin Xueting Cao Dandan Huang Shuo Li Xinghui Zhang Guangyu Xuan Mengting Wei Lei Zhang Xiaoli ding Yuzhong Zhang School of Materials Science and Engineering State Key Laboratory of Separation Membranes and Membrane ProcessesTiangong UniversityTianjin300387China

One type of new light-responsive hierarchical metal organic framework(MOF) has been successfully prepared using Co(NO_(3))_(3)·6H_(2)O as the metal salt and 4,4’-azobenzenedicarboxylic acid as the ligand by microwave method for the first time. It is found that MOF [Co(Az DC)] exhibits a light-responsive characteristic to SO_(2)adsorption due to the presence of azo group from the ligand. The light-responsive hierarchical MOFs are incorporated into Matrimid■ 5218(PI) matrix to prepare mixed matrix membranes(MMMs) for gas separation application. The morphology, crystallinity, chain mobility and thermal stability of MMMs are explored. Results show that Co(Az DC) may elevate both the CO_(2)(SO_(2)) permeability and CO_(2)(SO_(2))/N_(2)selectivity of the MMMs. In particular,the Co(Az DC) doped MMMs exhibit the significantly improved CO_(2)(SO_(2))/N_(2)selectivity from 33(123) for PI control membrane to 78(420) for MMMs, overcoming the 2008 Robeson upper bound for CO_(2)/N_(2)system. Sizesieving effect of Co(Az DC) with pore size 0.35 nm enhances the selectivity, while the –N=N– group from Co(Az DC) shows affinity to CO_(2)molecular rather than N_(2), also elevating selectivity of MMMs. In brief, enhanced selectivity of high-performance membrane is attributed to incorporation of Co(Az DC) particles, which displays synergistic effects both in size-sieving and CO_(2)-philic interaction for CO_(2)/N_(2)separation. Smart highly selective interface is constructed in MMMs by switching the configuration of MOFs from cis to trans. The SO_(2)permeability and SO_(2)/N_(2)selectivity of MMMs are investigated under both visible light and ultraviolet light states, and the SO_(2)/N_(2)separation performance under visible light is notably improved in comparison with that under ultraviolet light state.

关键词： Mixed matrix membranes Matrimid■5218 Metal-organic framework Light-responsive characteristic Gas separation