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Facile Preparation and Formation Mechanism of Uniform Silver Nanoparticles Using OP-10 as Emulsifier in Reverse Microemulsion

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Journal of wuhan University of Technology(Materials Science) 2011年第1期26卷 38-42页

作者：吴霞巫辉 Department of Chemistry School of Science Wuhan University of Technology

Using the polymerizable hydrophobic styrene monomer as the dispersion medium and the traditional nonionic surfactant OP-10 as emulsifier, stable silver nanoparticles of narrow size distribution were prepared by a reverse （w/o） microemulsion method. The powder X-ray diffraction （XRD） pattern indicated that the obtained silver nanoparticles were of face-centered cubic structure. The results of the transmission electron microscopy （TEM） show that the final silver nanoparticles are of spherical structure with an average diameter of 15.2 nm and of a Gaussian distribution. The internal high-ordered structure of silver nanoparticles was characterized by the field-emission high-resolution transmission electron microscopy （FEHRTEM）, indicating that the silver is monocrystalline and it has only one nucleation site during the formation process of a nanoparticle. The time-resolved UV-visible absorption spectra was used to monitor the process of the reaction in situ. The results show that the concentration of silver nanoparticles increases but the size changes little and the morphology transforms from obvious ellipsoidal shape to nearly spherical shape during the process. The experimental results indicate that the droplets’ dynamic exchange which is closely related to the nature of surfactant film is the control factor of the kinetics. The dynamic exchange mechanism of silver nanoparticle formation is proposed to involve continual encounter of two separate droplets forming transient fused dimer in which the chemical reaction occurs followed by re-separation without combination. Attributed to the dual role of surfactant in the nanoparticle formation, tailored nanoparticles can be successfully synthesized in control in the premise of a certain stability of reverse microemulsion.

关键词： monodispersed silver nanoparticle OP-10 reverse microemulsion

Alteration of Gene Expression Profile and Signal Pathway Induced by Methylseleninic Acid in Human Lung Cancer Cell Lines

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中国肺癌杂志 2009年第6期12卷 476-477页

作者： ting wang Zhihao wu Hongyu LIU Jun CHEN Liya SUN Qjnghua ZHOU Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment Tianjin Lung Cancer Institute Tianjin Medical University Hospital Tianjin 300052 China

Objective and Methods Lung cancer has a fastest growing rate of morbidity and mortality among malignant tumors and poses a great threat to the human health. Chemotherapy, as one

关键词：肺癌治疗疗效临床

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu Xiao-Li Li Xiao-ting Sun Li-ting wang Xia wu Ling-Jie Zhu Xiao-Jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao Guo Hui Bojing Sun Dongfang Hou Meidi wang Xueqian wu Tao wu Dong-Sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Heterojunctions LSPR Photocatalyst Phase junction Schottky junction Photothermal effect

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考虑信息熵模型的道路交通安全态势模型

数学的实践与认识 2016年第20期46卷 193-198页

作者：高婷婷王武宏周艳龙北京理工大学交通工程研究所北京100081 天津职业技术师范大学汽车与交通学院天津300222

分析道路交通事故统计中的交通事故数、死亡人数和受伤人数,并且将这三种统计数据和某地区的机动车辆数和机动车驾驶人数相结合,分别得到万车交通事故数和万人死亡人数和万人受伤人数,建立信息熵模型(information entropy model)对以上... 详细信息

分析道路交通事故统计中的交通事故数、死亡人数和受伤人数,并且将这三种统计数据和某地区的机动车辆数和机动车驾驶人数相结合,分别得到万车交通事故数和万人死亡人数和万人受伤人数,建立信息熵模型(information entropy model)对以上数据进行分析研究,从而得出评价交通安全程度的指标.这种方法突破了以往仅停留在万车死亡人数的指标上,且以往的研究方法还需采用专家评价法或德尔菲等定性评价方法,此评价方法对道路交通安全的分析更客观.最后以北京和天津近三年的交通事故统计数据为案例进行分析,研究结果表明:2012年至2014年间北京道路交通安全评价指标主要以交通事故起数认定所在年的道路交通安全状况,天津道路交通安全评价指标主以交通事故造成的受伤人数认定所在年的道路交通安全状况,且北京三个指标的G_i均高于天津,因此北京交通安全水平要低于天津.

关键词：交通工程安全分析信息熵模型道路交通态势模型

一类非线性弱奇异多重积分不等式中未知函数的估计及其应用

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西北师范大学学报（自然科学版） 2017年第2期53卷 8-12页

作者：黄基廷王五生河池学院数学与统计学院广西宜州546300

研究了一类非线性弱奇异多重积分不等式,被积函数中含有积分变量,积分项外包含了非常数项,利用离散Jensen不等式、Cauchy-Schwarz积分不等式、变量替换技巧和放大技巧等分析手段,给出了不等式中未知函数的上界估计.最后举例说明所得结... 详细信息

研究了一类非线性弱奇异多重积分不等式,被积函数中含有积分变量,积分项外包含了非常数项,利用离散Jensen不等式、Cauchy-Schwarz积分不等式、变量替换技巧和放大技巧等分析手段,给出了不等式中未知函数的上界估计.最后举例说明所得结果可以用来研究弱奇异积分方程解的定性性质.

关键词：弱奇异三重积分不等式离散Jensen不等式 Cauchy-Schwarz积分不等式上界估计

Co-production of hydrogen, oxygen, and electricity via an integrated solar-driven system with decoupled water electrolyzer and Na-Zn ion battery

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Journal of Energy Chemistry 2025年第1期100卷 621-627页

作者： Fei Lv Longjie Liu Jiazhe wu Pengfei wang Lixia Pan Dengwei Jing Yubin Chen International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University

Combining water electrolysis and rechargeable battery technologies into a single system holds great promise for the co-production of hydrogen （H2） and ***,the design and development of such systems is still in its ***,an integrated hydrogen-oxygen （O2）-electricity co-production system featuring a bipolar membrane-assisted decoupled electrolyzer and a Na-Zn ion battery was established with sodium nickelhexacyanoferrate （NaNiHCF） and Zn2+/Zn as dual redox *** decoupled electrolyzer enables to produce H2and O2in different time and space with almost 100%Faradaic efficiency at 100 mA ***,the charged NaNiHCF and Zn electrodes after the electrolysis processes formed a Na-Zn ion battery,which can generate electricity with an average cell voltage of 1.75 V at 10 m A *** connecting Si photovoltaics with the modular electrochemical device,a well-matched solar driven system was built to convert the intermittent solar energy into hydrogen and electric energy with a solar to hydrogen-electricity efficiency of 16.7%,demonstrating the flexible storage and conversion of renewables.

关键词： Hydrogen Electricity Decoupled water electrolyzer Na-Zn ion battery Solar energy

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一种嵌入式实时网络多媒体数据传输方法

系统仿真学报 2017年第4期29卷 808-817页

作者：王再见万婷吴丹丹邢青青安徽师范大学物理与电子信息学院安徽芜湖241000

为提高实时视频数据采集和传输的速率,以现场可编程门阵列(Filed Programmable Gate Array,FPGA)为核心处理器,以Verilog HDL描述电路功能实现对同步动态随机访问存储器(Synchronous Dynamic Random Access Memory,SDRAM)的高速访问,基... 详细信息

为提高实时视频数据采集和传输的速率,以现场可编程门阵列(Filed Programmable Gate Array,FPGA)为核心处理器,以Verilog HDL描述电路功能实现对同步动态随机访问存储器(Synchronous Dynamic Random Access Memory,SDRAM)的高速访问,基于典型网络实时传输网络多媒体业务数据。新的视频数据高速实时传输方法充分利用FPGA并行处理的特点,提高视频数据采集和传输速率。实验结果证明了本文方法的有效性。

关键词：高速实时传输现场可编程门阵列同步动态随机访问存储器硬件描述语言

Enteromorpha prolifera polysaccharide-Fe(Ⅲ) complex promotes intestinal development as a new iron supplement

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Science China Life Sciences 2025年第1期 219-231页

作者： Yingying Feng Yuying wu Jialu wang Zhenglin Dong Qian Yu Shuangshuang Xia Chunxue Liu Haihua wang Xin wu Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences CAS Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of Sciences ANYOU Biotechnology Group Co.Ltd Qingdao Seawin Biotech Group Co. LTD

Iron is a crucial micronutrient, and its deficiency can have detrimental effects on the health of infants. Dietary polysaccharide-iron(Ⅲ) complexes(PICs) are promising for addressing iron deficiency due to their minimal adverse reactions and high iron absorption rate. This study aimed to investigate the effects of dietary Enteromorpha prolifera polysaccharide-Fe(Ⅲ) complex(EP-Fe) on newborns, using 3-day weaned piglets as the iron-deficiency model. Results showed that EP-Fe improved iron levels and promoted intestinal development in piglets. Transcriptome sequencing revealed that EP-Fe increased the survival of intestinal epithelial cells under hypoxia by upregulating the expression of genes that promote the development of the vascular system. Additionally, EP-Fe enhanced the mucosal barrier functions by inhibiting myosin light chain kinase(MLCK)/phosphorylated myosin light chain(p-MLC) signaling pathway to increase the expression of intestinal tight junction proteins. Furthermore, the 16S r RNA gene sequencing of gut microbiota showed that EP-Fe promoted the enrichment of Bacteroides＿fragilis and other gut microbes that can metabolize carbohydrates. In conclusion, EP-Fe is an effective iron supplement for newborns, and it can be developed as a comprehensive nutritional supplement.

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