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Modification of TiO2 for enhanced photodecomposition of gaseous toluene

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Modification of TiO2 for enhanced photodecomposition of gase...

2017全国光催化材料及创新应用学术研讨会

作者： Hong-Peng Jia juan-juan li CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences

Drived by a severe atmospheric pollution arising from anthropogenic activities,enormous efforts are being invested to efficient elimination technologies of volatile organic compounds(VOCs).Photocatalytic decomposition of organic compounds by utilizing solar energy is desirable for the sustainable development strategy[1].Undoubtedly,the photocatalyst plays an essential role in the photoinduced conversion *** is one of the most frequently used photocatalysts,however,TiO is activated only by UV light owing to its large band gap(3.2 eV)and exhibits low quantum efficiency owing to the fast recombination of photogenerated charge carriers,both of which hinder its wide application[2].Various strategies have thus been applied to modify the properties of TiO to overcome such limits,aiming at extending the absorption range of solar illumination,facilitating charge separation and accelerating surface reaction kinetics to the improvement of TiO photocatalytic *** this objective,herein,(1)co-doping Bi and Zn ions onto TiO in bulk or on the surface is employed to reduce the energy of the band gap and create energy levels to promote electronic excitation under visible-light illumination and suppress the recombination of electron-hole pairs;(2)TiO/WO with defects of low-valent metal species and oxygen vacancies created by hydrogenation treatment is designed in view of combining the broad full-spectrum absorption of TiO/WO with the prominent coupled semiconductor properties;(3)Integration of noble-metals on TiO is expected to spatially separate the photogenerated charge carriers by trapping photogenerated electrons in conduction band and enhance photocatalytic efficiency by providing active sites for the redox reactions,thus,the effect of the deposited noble-metals and their deposition routes on the photocatalytic performance over M-TiBiO(M = Pt and Pd)is *** photocatalytic activities of TiO-based materials are evaluated by photodecomposition of ga

关键词： TiO2 Modification Visible-light Photodecomposition of toluene

RESEARCH ON AIR-COUPLED ULTRASONIC EVALUATION METHOD FOR DYNAMIC VISCOELASTICITY OF CONCRETE

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RESEARCH ON AIR-COUPLED ULTRASONIC EVALUATION METHOD FOR DYN...

2016年全国压电和声波理论及器件应用研讨会

作者： Jun-jie CHANG juan-juan li Key Lab of Nondestructive Testing Ministry of EducationNanchang Hangkong University

Background, Motivation and Objective Concrete is a classic viscoelastic material, damping mechanism of which are affected greatly by viscoelastic properties. The viscoelasticity of the material is one of the mechanical properties of the damping mechanism. The elasticity of the material can cause the attenuation and scattering of the ultrasonic, the viscosity can cause the loss of energy. The static and dynamic viscoelastic are two different evaluation methods for the viscoelastic concrete material, respectively. The concrete is in a dynamic external pressure environment, so the dynamic mechanical properties compared with the static mechanical properties can reflect the performance of concrete in service. Statement of Contribution/Methods The paper presents the method for solving the ultrasonic attenuation coefficient, phase velocity and loss tangent value in the concrete according to the basic theory of viscoelastic properties, air-coupled ultrasonic testing and using loss angle tangent value as the evaluation parameter. The evaluation results of concrete dynamic viscoelastic are provided. Results The deformation, loss tangent increases and the proportion of the loss modulus increases with increasing of damage the concrete inside, but storage modulus decreased. Discussion and Conclusions The viscoelastic parameters of the concrete can be obtained;the change of concrete internal damage is monitored using the air coupling penetration method. Both of the concrete viscoelastic and concrete damage are considered, which provides a new method for concrete nondestructive.

关键词： Piezoelectric motor Single vibrator Bidirectional rotation Ultrasonic motor

CASTING: A Potent Supramolecular Strategy to Cytosolically Deliver STING Agonist for Cancer Immunotherapy and SARS-CoV-2 Vaccination

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CCS Chemistry 2023年第4期5卷 885-901页

作者： Jun-Jun Wu Fang-Yuan Chen Bei-Bei Han Hong-Qing Zhang Lang Zhao Zhe-Rui Zhang juan-juan li Bo-Dou Zhang Ya-Nan Zhang Yu-Xin Yue Hong-Guo Hu Wen-Hao li Bo Zhang Yong-Xiang Chen Dong-Sheng Guo Yan-Mei li Key Lab of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education) Department of ChemistryCenter for Synthetic and Systems BiologyTsinghua UniversityBeijing 100084 College of Chemistry Key Laboratory of Functional Polymer MaterialsMinistry of EducationState Key Laboratory of Elemento-Organic ChemistryNankai UniversityTianjin 300071 Key Laboratory of Special Pathogens and Biosafety Center for Emerging Infectious DiseasesWuhan Institute of VirologyChinese Academy of SciencesWuhan 430071 University of Chinese Academy of Sciences Beijing 100049 Beijing Institute for Brain Disorders Beijing 100069 Key Laboratory of Innate Immune Biology of Fujian Province Provincial University Key Laboratory of Cellular Stress Response and Metabolic RegulationBiomedical Research Center of South ChinaCollege of Life SciencesFujian Normal UniversityFuzhou 350117

Stimulator of interferon genes,namely STING,an adaptor protein located in the endoplasmic reticulum,has been recognized as a shining target for cancer and infection ***,STING agonists cyclic dinucleotides(CDNs)have shown almost zero efficacy in phase I clinical trials as a monotherapy,likely due to poor cellular permeability and rapid diffusion despite intratumoral *** deficiencies further affect other applications of CDNs,such as pandemic SARS-CoV-2 prevention and ***,we rationally design a supramolecular cytosolic delivery system based on controllable recognition of calixarene,namely CASTING(CAlixarene-STING),to improve CDN druggability,including degradation stability,cellular permeability,and tissue *** efficiently enhances the immunostimulatory potency of CDGSF[a chemically modified cyclic di-GMP(CDG)]to generate an immunogenic microenvironment for melanoma regression,anti-PD-1 response rate increase,and durable memory formation against tumor *** importantly,CASTING displays a superior adjuvant activity on SARSCoV-2 recombinant spike/receptor binding domain vaccines,inducing robust and coordinated T-cell and antibody responses against SARS-CoV-2 infection in ***,the CASTING design represents an innovative advancement to facilitate the clinical translational capability of STING agonists.

关键词： STING agonist cyclic dinucleotides calixarene supramolecular delivery cancer immunotherapy SARS-CoV-2 vaccine adjuvant

超广角眼底自发荧光在Stargardt病中的特征和应用价值

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国际眼科杂志 2021年第12期21卷 2191-2194页

作者：郑志坤张娟黎铧李娟娟云南大学附属医院云南省第二人民医院云南省眼科医院中国云南省昆明市650021

目的:探讨超广角眼底自发荧光在Stargardt病中的特征和应用价值。方法:回顾分析2016-05/2020-08在云南省第二人民医院眼科门诊经过多种影像检查及基因测序而确诊的Stargardt病患者38例76眼。使用超广角眼底自发荧光成像检查,并对比传统... 详细信息

目的:探讨超广角眼底自发荧光在Stargardt病中的特征和应用价值。方法:回顾分析2016-05/2020-08在云南省第二人民医院眼科门诊经过多种影像检查及基因测序而确诊的Stargardt病患者38例76眼。使用超广角眼底自发荧光成像检查,并对比传统眼底彩照、眼底55°自发荧光、光相干断层扫描的影像特征,评估超广角眼底自发荧光在Stargardt病中的影像特征及其临床应用优势。结果:超广角眼底自发荧光检查中76眼(100%)均发生了后极部的高自发荧光,而传统55°自发荧光检查仅有42眼(55%)可见明显的后极部高自发荧光。76眼中66眼(87%)可见不同数量的斑点,从后极部向周边视网膜分布,超广角眼底自发荧光较眼底彩照能显示更为清晰和更多数量的视网膜斑点,更为完整地显示斑点的分布数量和面积。76眼(100%)均可见黄斑中心处RPE萎缩所呈现的卵圆形低自发荧光区域,随病变进展,萎缩区扩大、低荧光区域相应扩大,超广角眼底自发荧光能完整显示萎缩范围和面积,但无法从萎缩深度上进行显示。48眼(63%)超广角眼底自发荧光中可见强背景自发荧光从黄斑处向视盘鼻侧和颞下方扩展,在视盘下方形成一明显的近似垂直的分界线。结论:Stargardt病中的自发荧光变化不仅局限于后极,而且可能在周围延伸得更多,超广角眼底自发荧光成像是评估Stargardt病患者的有用工具。

关键词：自发荧光眼底黄色斑点 Stargardt病超广角成像

A Simultaneous Determination of Seven Principal Compounds in liuwei Wuling Tablet Using HPLC-DAD

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A Simultaneous Determination of Seven Principal Compounds in...

2015年中国药学大会暨第十五届中国药师周

作者： ling Cheng juan-juan li Gang Shen ling Qiu juan Zheng li-hong Zhang Na Wu Jin Han Hai-long Yuan Pharmacy College Chengdu University of Traditional Chinese Medicine 302 Hospital of PLA&PLA Institute of Chinese Materia Medica

An effective high-performance liquid chromatography method coupled with diode array detection（HPLC-DAD） was established for the simultaneous determination of seven major bioactive compounds in liuwei Wuling Tablet（LWWLT）, including forsythoside A, specnuezhenide, phillyrin schisandrin, schisantherin A, deoxyschizandrin and schisandrin B. The chromatographic separation was obtained on an Inertsil? ODS-3 column（250 mm×4.6 mm, 5 μm） at 25℃ with a gradient system of 0.1% phosphoric acid and acetonitrile. The wavelength of detector was set at 230 nm. The following parameters including specificity, linearity, limit of detection（LOD）, limit of quantification（LOQ）, precision, stability, repeatability and recovery were tested for evaluating the established analytical method. Calibration curves for seven compounds showed good linear regressions, with correlation coefficients exceeding 0.999 within the test concentration range. The limits of detection and quantification of each compound were in the range of 0.03-0.28 μg/mL and 0.11-0.87 μg/mL, respectively. The relative standard deviation values of precision, stability and repeatability were less than 2.34%. The average recovery yields of all seven constituents ranged from 96.71-103.9%. The above validated quantificationmethod was successfully applied for the analysis of ten batches of commercial LWWLT. These results would give a support for quality control and the further pharmacology study of LWWLT.

关键词： simultaneous determination seven bioactive constituents liuwei Wuling Tablet HPLC-DAD

蝶形视网膜色素上皮营养不良患者的多模式眼底影像学特征

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国际眼科杂志 2022年第5期22卷 863-869页

作者：郑志坤张娟黎铧李娟娟张利伟云南大学附属医院眼科云南省第二人民医院眼科云南省眼科医院云南省眼科疾病研究重点实验室中国云南省昆明市650021

目的:探讨蝶形视网膜色素上皮营养不良(BPD)患者的多模式眼底影像特征。方法:回顾分析2016-01/2019-07经多模式影像检查确诊BPD的患者18例36眼的眼底彩照、红外照相、自发荧光、荧光造影、脉络膜造影、光学相干断层扫描(OCT)及眼底血流... 详细信息

目的:探讨蝶形视网膜色素上皮营养不良(BPD)患者的多模式眼底影像特征。方法:回顾分析2016-01/2019-07经多模式影像检查确诊BPD的患者18例36眼的眼底彩照、红外照相、自发荧光、荧光造影、脉络膜造影、光学相干断层扫描(OCT)及眼底血流成像OCT(OCTA)等多模式眼底影像检查。结果:典型的眼底彩色照相可显示色素异常沉着而呈现的蝶翅样病变外观,病变进展后蝶形外观不明显,而相应区域萎缩;红外照相显示BPD患者的眼底黄色病灶,表现为白色高亮影像;自发荧光可有斑片状、点状所勾勒的蝶翅表现,也可有以上特征重叠的表现,当病变进展萎缩明显时,自发荧光不能显示典型的蝶形改变,但可以反映出色素上皮细胞的破坏程度范围;眼底荧光血管造影和脉络膜造影除了显示蝶形病变外,能更为精准地显示血管病变情况,尤其是脉络膜新生血管(CNV)的检查;OCT显示病变位于视网膜色素上皮(RPE)之上与光感受器之间。随病变进展,色素上皮表现相应扩大的损伤,继发CNV者可见突破RPE的高反射信号;OCTA显示病变对视网膜深层和浅层损伤不明显,但脉络膜血流信号不同程度丢失,可敏感检出CNV的血流影像。结论:多模式眼底影像技术提供了BPD患者病变发生发展的影像特征,有助于临床医生更加深入地认识该病。

关键词：视网膜色素上皮图形状营养不良蝶形多模式影像脂褐质特征

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玉米收储制度改革后出现的新问题与解决对策

经济纵横 2018年第4期 113-118页

作者：李娟娟黎涵沈淘淘东北师范大学经济学院吉林长春130117

玉米收储制度改革两年来,在玉米市场价格机制形成、种植结构调整优化、收购主体多元化及玉米产业链激活等方面取得了显著成效。但在改革后也出现了一些新的问题。如,小农户种植结构调整困难,规模化经营进程放缓,玉米加工业出现产能过剩... 详细信息

玉米收储制度改革两年来,在玉米市场价格机制形成、种植结构调整优化、收购主体多元化及玉米产业链激活等方面取得了显著成效。但在改革后也出现了一些新的问题。如,小农户种植结构调整困难,规模化经营进程放缓,玉米加工业出现产能过剩问题,农民玉米种植收益有所下降,生产者补贴引发一些新矛盾。对此,应采取综合激励措施引导农民调整优化种植结构,完善农业社会化服务体系以推进规模经营,延伸玉米产业链以化解产能过剩风险,明确补贴功能定位并健全补贴制度,同时在宏观层面构建与改革相适应的粮食调控体系。

关键词：玉米收储政策种植结构生产者补贴规模经营

1,4-戊二烯-3-酮肟酯类化合物的合成及生物活性

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精细化工 2017年第7期34卷 834-840页

作者：夏丽娟陈丽娟王晓斌杜秀娟郑宗园薛伟绿色农药与农业生物工程国家重点实验室培育基地教育部绿色农药与生物工程重点实验室贵州大学精细化工研究开发中心贵州贵阳550025 安顺市环境监测站贵州安顺561200

以单羰基姜黄素衍生物为先导,将具有优良生物活性的肟酯基团与1,4-戊二烯-3-酮结构有机结合,设计合成了11个含肟酯结构的1,4-戊二烯-3-酮类化合物,其结构经红外光谱、核磁共振波谱、液相质谱和元素分析确证。初步生物活性测试结果表明:... 详细信息

以单羰基姜黄素衍生物为先导,将具有优良生物活性的肟酯基团与1,4-戊二烯-3-酮结构有机结合,设计合成了11个含肟酯结构的1,4-戊二烯-3-酮类化合物,其结构经红外光谱、核磁共振波谱、液相质谱和元素分析确证。初步生物活性测试结果表明:在质量浓度为500 mg/L时,化合物Ⅴa对烟草花叶病毒(TMV)治疗活性为61.3%,与其对照药剂宁南霉素(64.6%)相当;化合物Ⅴe对TMV的治疗活性为91.2%,与对照药剂宁南霉素(97.3%)相当。在药剂质量浓度为50 mg/L时,化合物Ⅴf对小麦赤霉病菌、水稻纹枯病菌和苹果腐烂病菌具有中等程度的抑制活性,其抑制率分别为48.1%、56.5%和66.1%。在药剂质量浓度为100 mg/L时,化合物Ⅴi对小菜蛾和蚜虫具有一定程度的触杀活性,其抑制率分别为61.5%和42.4%。以上活性数据表明:1,4-戊二烯-3-酮肟酯类化合物具有一定的抗植物病毒、抑菌和杀虫活性,在其结构基础上进行适当的改造,有望得到具有良好生物活性的化合物。

关键词： 1,4-戊二烯-3-酮肟酯抗病毒活性抑真菌活性杀虫活性精细化工中间体

A new enzyme lable strategy for flow-through chemiluminescent immunoassay of interferon-γ

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A new enzyme lable strategy for flow-through chemiluminescen...

“2011国际化学年在中国”——中国化学会第十届全国发光分析学术研讨会

作者： Zhanjun Yang~*,Jing Zhu,juan li,juan Shen,Xiaoya Hu~* (College of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,225002)

Interferon-γ(IFN-γ) has been reported as a powerful biomarker for diagnosis of *** present,the detection of IFN-γrelies on label-free electrochemical impedance measurement *** this work,a new enzyme label strategy ...

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