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Hybrid ZnO@Au Nanorod Array for Fast and Repeatable Bacteria Inactivation

Chinese Journal of Chemistry 2023年第17期41卷 2132-2142页

作者： Yu Liu Xiaoyu Zhao Xiaosa Zhang xiaodan jia Lie Wu Xiue jiang College of Science Shenyang University of Chemical TechnologyShenyangLiaoning 110142China Shenyang National Laboratoryfor Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyangLiaoning 110016China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of Scienc ChangchunJilin 130022China

Comprehensive Summary,The worldwide abuse of antibiotics and resultant antimicrobial resistance made the development of new antibacterial materials an urgent and significant ***,a hybrid ZnO@Au nanorod array with fast bacterial inactivation and excellent recyclability was reported.93%bacteria could be inactivated within 5 min ultra-sonication under indoor daylight,and the killing rate maintains above 90%after seven repeated using *** mechanism involves extracellular reactive oxygen species(ROS)generated from photocatalysis and piezoelectricity of nanorod array,intracellular ROS generation and decrease of adenosine-triphosphate(ATP)originated from electron transfer(ET)from bacteria to nanorod array,as well as mechanical effect from the nanorod,among which ET mechanism plays a major *** Schottky barrier from the hybrid interface not only enhances the ROS generation by promoting the charge transfer and carrier separation as well as light utilization,but also enables one-direction electron transfer from bacteria to nanorod *** resultant continuous electron loss breaks the energy metabolism and disturbs the redox equilibrium,leading to bacterial *** study demonstrates the great potential of hybrid structure in antibacterial applications and indicates ET as a novel effective antibacterial mechanism for semiconductor materials,which provides insights into the design of next-generation antibacterial materials.

关键词： Antibacterial Hybrid structure Zinc oxide nanorod Electron transfer Reactive oxygen species Microarrays Nanocomposites Semiconductors

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Multifunctional N,S-doped and methionine functionalized carbon dots for on−off−on Fe^(3+)and ascorbic acid sensing,cell imaging,and fluorescent ink applying

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Nano Research 2023年第4期16卷 5401-5411页

作者： Zheng Yang Tiantian Xu Shaobing Zhang Hui Li Yali Ji xiaodan jia jianli Li Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials ScienceNorthwest UniversityXi’an 710127China College of Chemistry and Chemical Engineering Xi’an University of Science and TechnologyXi’an 710054China Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Land and ResourcesXi’an 710012China

Fluorescent carbon dots(CDs)have been identified as potential nanosensors and attracted tremendous research interests in wide areas including anti-counterfeiting,environmental and biological sensing and imaging in considering of the attractive optical *** this work,we present a CDs based fluorescent sensor from polyvinylpyrrolidone,citric acid,and methionine as precursors by hydrothermal *** selective quantifying of Fe^(3+)and ascorbic acid(AA)are based on the fluorescent on-off-on process,in which the fluorescent quenching is induced by the coordination of the Fe^(3+)on the surface of the CDs,while the fluorescence recovery is mainly attributed to redox reaction between Fe^(3+)and AA,breaking the coordination and bringing the fluorescence *** by the good water solubility and biocompatibility,significant photostability,superior photobleaching resistance as well as high selectivity,sensitivity,and interference immunity,which are constructed mainly from the N,S-doping and methionine surface functionalization,the CDs have not only been employed as fluorescence ink in multiple anticounterfeiting printing and confidential document writing or transmitting,but also been developed as promising fluorescence sensors in solution and solid by CDs doped test strips and hydrogels for effectively monitoring and removing of Fe^(3+)and AA in environmental aqueous *** CDs have been also implemented as effective diagnostic candidates for imaging and tracking of Fe^(3+)and AA in living cells,accelerating the understanding of their function and importance in related biological processes for the prevention and treatment specific diseases.

关键词： carbon dots fluorescent sensors Fe^(3+) ascorbic acid fluorescent ink message encryption

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Neuropeptide Y receptor Y8b(npy8br)regulates feeding and digestion in Japanese medaka(Oryzias latipes)larvae:evidence from gene knockout

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第7期25卷 605-616页

作者： xiaodan jia Ke LU Xufang LIANG College of Fisheries Chinese Perch Research CenterHuazhong Agricultural UniversityWuhan 430070China Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt Ministry of EducationWuhan 430070China

Neuropeptide Y receptor Y8(NPY8R)is a fish-specific receptor with two subtypes,NPY8AR and *** in expression levels during physiological processes or in vivo regulation after ventricular injection suggest that NPY8BR plays an important role in feeding regulation;this has been found in only a few fish,at *** order to better understand the physiological function of npy8br,especially in digestion,we used clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein 9(Cas9)technology to generate npy8br-/-japanese medaka(Oryzias latipes).We found that the deletion of npy8br in medaka larvae affected their feeding and digestion ability,ultimately affecting their ***,npy8br deficiency in medaka larvae resulted in decreased feed intake and decreased expression levels of orexigenic genes(npy and agrp).npy8br-/-medaka larvae fed for 10 d(10th day of feeding)still had incompletely digested brine shrimp(Artemia nauplii)in the digestive tract 8 h after feeding,the messenger RNA(mRNA)expression levels of digestion-related genes(amy,lpl,ctra,and ctrb)were significantly decreased,and the activity of amylase,trypsin,and lipase also significantly *** deletion of npy8br in medaka larvae inhibited the growth and significantly decreased the expression of growth-related genes(gh and igf1).Hematoxylin and eosin(H&E)sections of intestinal tissue showed that npy8br-/-medaka larvae had damaged intestine,thinned intestinal wall,and shortened intestinal *** far,this is the first npy8br gene knockout model established in fish and the first demonstration that npy8br plays an important role in digestion.

关键词： Neuropeptide Y receptor Y8b(npy8br) Japanese medaka(Oryzias latipes) Knockout Feeding Digestion

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Ultrafine monolayer Co-containing layered double hydroxide nanosheets for water oxidation

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Journal of Energy Chemistry 2019年第7期28卷 57-63页

作者： xiaodan jia Xin Zhang jiaqing Zhao Yufei Zhao Yunxuan Zhao Geoffrey I.N.Waterhouse Run Shi Li-Zhu Wu Chen-Ho Tung Tierui Zhang Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences.Beijing 100049 China School of Chemistry and Chemical Engineering Xi'an University of Science and TechnologyXi'an 710054ShaanxiChina School of Chemical Sciences The University of AucklandAuckland 1142New Zealand

For many two-dimensional(2D)materials,low coordination edges and corner sites offer greatly enhanced catalytic performance compared to basal sites,motivating the search for new synthetic approaches towards ultrathin and ultrafine 2D nanomaterials with high specific surface *** date,the synthesis of catalysts that are both ultrathin(monolayer)and ultrafine(lateral size<10nm)has proven extremely ***,using a facile ultrasonic exfoliation procedure,we describe the successful synthesis of ultrafine ZnCo-LDH nanosheets(denoted as ZnCo-UF)with a size^3.5 nm and thickness^0.5 *** single layer ZnCo-UF nanosheets possess an abundance of oxygen vacancies(Vo)and unsaturated coordination s让es,thereby affording outstanding electrocatalytic water oxidation *** calculations confirmed that Vo on the surface of ZnCo-UF enhanced H20 adsorption via increasing the electropositivity of the nanosheets.

关键词： Layered double hydroxides Ultrafine nanosheets Oxidation evolution reaction

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Study on the interactions of 4-methylbenzaldehyde-6-bromo-2-naphthoyl hydrazone with ct-DNA and BSA

Study on the interactions of 4-methylbenzaldehyde-6-bromo-2-...

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中国化学会第十九届全国化学热力学和热分析学术会议

作者： Zong Xinjie Liu Xiangrong Yang Zaiwen jia xiaodan College of Chemistry and Chemical Engineering Xi’an University of Science and Technology

4-methylbenzaldehyde-6-bromo-2-naphthoyl hydrazone was synthesized by methyl 6-bromo-2-naphthoate,hydrazine hydrate and *** fluorescence intensity of the original BSA was 299.45 shown in Fig.1,but the fluorescence intensity decreased gradually with the increase of the compound *** binding constant was calculated by Stern-Volmer and Lineweaver-Burk equations and its value was 1.33×105 L·mol,which indicated the compound had better combining ability with *** interaction thermogenic curves of the compound with ct-DNA and BSA were shown in *** can be seen from Fig.2,a maximum heat flow peak of the compound with BSA and ct-DNA appeared at 5.73 and 4.46 min,and the reaction ended at 42.66 and 47.57 min,*** experiment also showed the interaction process of the compound with BSA was a spontaneous exothermic process,(35)H=-8.35×105 J·mol,indicating the main interaction between the compound and BSA was hydrogen bonds and hydrophobic interactions,while the combination of the compound with ct-DNA was an endothermic reaction and the value was bigger than 3×10 J·mol,which showed there was an electrostatic action between the compound and ct-DNA.

关键词： Naphthoyl hydrazone Microcalorimetry BSA ct-DNA

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关于混合模式色谱固定相对蛋白保留特征的研究

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化学学报 2012年第15期70卷 1631-1636页

作者：加晓丹柯从玉孙萱耿信笃西北大学现代分离科学研究所现代分离科学省级重点实验室教育部合成与天然功能分子化学重点实验室西安710069 西安石油大学化学化工学院西安710065

为使混合机理色谱(MMC)得到广泛地应用,合成、表征和评价MMC固定相就成了首先要解决的问题.依据离子交换色谱柱也具有疏水色谱(HIC)保留机理的特征,选了4种弱阳离子交换(WCX)柱和一根二维[2D(WCX,HIC)]色谱柱,研究了标准蛋白在这两类色... 详细信息

为使混合机理色谱(MMC)得到广泛地应用,合成、表征和评价MMC固定相就成了首先要解决的问题.依据离子交换色谱柱也具有疏水色谱(HIC)保留机理的特征,选了4种弱阳离子交换(WCX)柱和一根二维[2D(WCX,HIC)]色谱柱,研究了标准蛋白在这两类色谱柱上的保留行为.这四种WCX色谱柱中的两种能在WCX和HIC两种分离模式下分离蛋白,虽不如2D色谱柱效果好,但有可能当成"准2D柱"来使用.发现蛋白在这四种WCX柱上所显示的HIC分离特征各不相同,且保留值随盐浓度变化呈现出的"U型"曲线也有大的差异.实验结果显示,"U型"曲线的宽度和临界点分别与色谱动力学和热力学因素相关.还对这两类色谱固定相的峰容量表征方法和命名提出了建议和说明.

关键词：二维色谱固定相混合模式色谱蛋白分离离子交换色谱疏水色谱计量置换理论

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基于Caprini量表DVT风险评估的程序化干预对脑卒中术后患者深静脉血栓形成的影响

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中国全科医学 2023年第S1期26卷 55-57页

作者：贾晓丹天津医科大学总医院天津市300052

目的探讨基于Caprini量表下肢深静脉血栓(DVT)风险评估的程序化干预对脑卒中术后患者深静脉血栓形成的影响。方法选取天津医科大学总医院2019年10月至2021年5月收治的脑卒中术后患者60例为研究对象,按随机数字表法分为对照、观察组,各3... 详细信息

目的探讨基于Caprini量表下肢深静脉血栓(DVT)风险评估的程序化干预对脑卒中术后患者深静脉血栓形成的影响。方法选取天津医科大学总医院2019年10月至2021年5月收治的脑卒中术后患者60例为研究对象,按随机数字表法分为对照、观察组,各30例。对照组接受常规护理干预联合一般DVT预防措施,观察组在对照组基础上使用Caprini评估量表进行DVT风险分级,两组均干预至出院。比较干预前后两组患者功能(神经、肢体)、日常生活能力、患侧下肢静脉血流动力学水平、干预期间下肢肿胀、皮肤颜色改变、DVT发生情况及干预后满意度。结果与干预前比较,干预后两组NIHSS评分均降低,且观察组低于对照组,两组FMA-L、BI评分均升高,且观察组高于对照组(P<0.05);干预后观察组峰流速、平均血流速度、平均血流量与干预前比均升高,且与对照组相比,观察组处于更高水平(P<0.05);干预期间,观察组相较于对照组,下肢肿胀、皮肤颜色改变、DVT发生率处于更低水平(P<0.05);干预后,观察组总满意度高于对照组(P<0.05)。结论脑卒中术后患者应用Caprini量表DVT风险评估的程序化干预可有效改善神经功能,提高下肢运动功能、生活质量及护理满意度,促进下肢血液循环,降低DVT发生风险。

关键词：脑卒中深静脉血栓 Caprini评估量表血流动力学

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基于三维介孔碳的莱克多巴胺电化学检测方法

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武汉大学学报（理学版） 2021年第4期67卷 329-336页

作者：贾晓丹程芹武汉纺织大学湖北省纺织新材料及其应用重点实验室湖北武汉430200

以ZnO为硬模板,淀粉为碳源,通过简单的混合干燥-碳化-模板去除策略,构建了一种具有三维内联结构的介孔碳材料。将制备的三维介孔碳(孔径尺寸约为30 nm)作为玻碳电极修饰材料,发现其能极大地增强瘦肉精分子莱克多巴胺的电化学氧化信号。... 详细信息

以ZnO为硬模板,淀粉为碳源,通过简单的混合干燥-碳化-模板去除策略,构建了一种具有三维内联结构的介孔碳材料。将制备的三维介孔碳(孔径尺寸约为30 nm)作为玻碳电极修饰材料,发现其能极大地增强瘦肉精分子莱克多巴胺的电化学氧化信号。通过物理和电化学表征发现,制备的三维介孔碳具有较大的比表面积和丰富的介孔结构,能显著提高电极表面电子转移速率和目标分子吸附能力。基于三维介孔碳对莱克多巴胺显著的电化学增敏效应,提出了一种高灵敏的莱克多巴胺电化学检测方法,线性检测范围为25~2000 nmol/L,检出限为4.39 nmol/L。

关键词：食品安全硬模板法三维介孔碳莱克多巴胺电化学传感器

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AM50镁合金搅拌摩擦焊接温度场研究

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热加工工艺 2009年第3期38卷 126-129页

作者：贾晓丹芦笙江苏科技大学材料学院江苏镇江212003

对AM50镁合金进行了搅拌摩擦焊接实验,研究了各特征点的焊接温度场变化规律。结果表明:在搅拌摩擦焊接过程中,各特征点都经历了"加热-峰值-冷却"的过程,且各特征点的加热速度、冷却速度、峰值温度以及到达峰值温度的时间各不相同。在一... 详细信息

对AM50镁合金进行了搅拌摩擦焊接实验,研究了各特征点的焊接温度场变化规律。结果表明:在搅拌摩擦焊接过程中,各特征点都经历了"加热-峰值-冷却"的过程,且各特征点的加热速度、冷却速度、峰值温度以及到达峰值温度的时间各不相同。在一定的旋转速度下,各特征点的峰值温度随焊接速度的减小而升高;而在一定的焊接速度下,各特征点的峰值温度随旋转速度的增大而升高。

关键词： AM50镁合金搅拌摩擦焊温度场

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拦挡作用对黄土坡面泥流动力过程影响机制

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西北地质 2024年第3期57卷 285-292页

作者：华山贾晓丹张霞长安大学地球科学与资源学院陕西西安710054 中国地质调查局西安地质调查中心/西北地质科技创新中心陕西西安710119 西安理工大学西北旱区生态水利国家重点实验室陕西西安710048

泥石流运动过程中拦挡坝的拦挡作用是泥流防治研究中的一项重要议题。本研究引入侵蚀速率概念,建立了含有拦挡坝的泥流连续介质模型,阐明了拦挡坝拦挡作用对泥流运动行为和动力过程的影响。结果表明,泥流撞击拦挡坝发生漫坝时,拦挡坝遭... 详细信息

泥石流运动过程中拦挡坝的拦挡作用是泥流防治研究中的一项重要议题。本研究引入侵蚀速率概念,建立了含有拦挡坝的泥流连续介质模型,阐明了拦挡坝拦挡作用对泥流运动行为和动力过程的影响。结果表明,泥流撞击拦挡坝发生漫坝时,拦挡坝遭受了逐渐加速泥流巨大的影响。拦挡坝发挥出拦截和拦挡双重功效:一方面,使得泥流灾害体横向扩展增强,纵向延伸减弱,滑移距离减少,降低了泥流的致灾范围;另一方面,降低了泥流侵蚀夹带作用,减少了泥流灾害体质量,使得灾害体面积和体积分别下降2.48%和3.63%。同时,使泥流偏离流动方向,泥流运动的平均速度下降10.62%,缓解了泥流的冲击力,削减了灾害体16.17%的致灾能量,进一步降低了泥流的致灾强度和致灾规模。引入基底地形和侵蚀速率的数值模型为泥石流动力机制提供理论支持,也为泥流防治提供技术指导。

关键词：泥流拦挡坝动力机制致灾能量

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