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Vanadium nitride quantum dots@carbon skeleton anode material synthesized via in situ oxidation initiation strategy

Tungsten 2024年第3期6卷 561-573页

作者： Yi-Han Fu Yuan-You peng Lei Zhao Tian-Qi He Mei-Mei Yuan Hao Dang Rui Liu fen Ran State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals School of Materials Science and Engineering Lanzhou University of Technology

Vanadium nitride（VN） has received significant attention as a potential negative electrode material due to its remarkable theoretical and physical ***,the electrochemical performance needs to be improved due to its low specific surface area and the issue of being easily dissolved in *** have shown that the composite structure of carbon-coated nano sc ale VN particles could significantly increase the specific surface area of VN,and more importantly,and the carbon matrix can effectively restrain the dissolution of VN particles in the electrolyte,thereby improving its chemical and electrochemical performance,including specific capacity and cycling ***,VN quantum dots are synthesized and protected by uniformly coating the carbon skeleton on its surface via an in situ strategy of oxidation initiation,which initiates dopamine polymerization,forming a crystalline complex of polydopamine and *** heat treatment,the product is a composite material with VN quantum dots embedded in the amorphous carbon *** resulting smallsized and crosslinked carbon particles formed a graded pore structure,more reasonable channels provided for electrolyte ions transport *** the composite material was used as the negative electrode material for supercapacitors,it exhibits the specific capacity of 391.9 F·g-1at a current density of 0.5 A·g-1and excellent capacity retention rate of 83.6% after *** synthesis method of this quantum dot could be applied to other metal compounds and has potential applications in catalysis,environmental protection,and other fields.

关键词： In situ initiation Vanadium nitride Quantum dots Anode Supercapacitors

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A systematic study of Erzhu Erchen decoction against damp-heat internalized type 2 diabetes based on data mining and experimental verification

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Traditional Medicine Research 2024年第2期9卷 27-41页

作者： peng-Yu Wang Jian-fen Shen Shuo Zhang Qing Lan Guan-Di Ma Tong Wang You-Zhi Zhang School of Pharmacy Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei ProvinceXianning Medical CollegeHubei University of Science and TechnologyXianning 437100China Department of Central Laboratory The First Affiliated Hospital of Jiaxing UniversityJiaxing 314000China

Background:Erzhu Erchen decoction(EZECD),which is based on Erchen decoction and enhanced with Atractylodes lancea and Atractylodes macrocephala,is widely used for the treatment of dampness and heat(The clinical manifestations of Western medicine include thirst,inability to drink more,diarrhea,yellow urine,red tongue,et al.)internalized ***,the mechanism of EZECD on damp-heat internalized Type 2 diabetes(T2D)remains *** employed data mining,pharmacology databases and experimental verification to study how EZECD treats damp-heat internalized ***:The main compounds or genes of EZECD and damp-heat internalized T2D were obtained from the pharmacology ***,the overlapped targets of EZECD and damp-heat internalized T2D were performed by the Gene Ontology,kyoto encyclopedia of genes and genomes *** the compound-disease targets-pathway network were constructed to obtain the hub ***,the hub genes and core related pathways were mined with weighted gene co-expression network analysis based on Gene Expression Omnibus database,the capability of hub compound and genes was valid in AutoDock ***,and violin plot and gene set enrichment analysis were performed to explore the role of hub genes in damp-heat internalized ***,the interactions of hub compound and genes were explored using Comparative Toxicogenomics Database and quantitative polymerase chain ***:First,herb-compounds-genes-disease network illustrated that the hub compound of EZECD for damp-heat internalized T2D could be ***,the hub genes were CASP8,CCL2,and AHR according to weighted gene co-expression network *** docking showed that quercetin could bind with the hub ***,gene set enrichment analysis and Gene Ontology represented that CASP8,or CCL2,is negatively involved in insulin secretion response to the TNF or lipopolysaccharide process,and AHR or CCL2 positively regulated li

关键词： data mining damp-heat internalized type 2 diabetes Erzhu Erchen decoction network pharmacology bioinformatics

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Dominant Correlogram Based Particle Filter Tracking

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Journal of Shanghai Jiaotong university(Science) 2005年第1期10卷 12-15页

作者：毛燕芬施鹏飞 Inst.of Image Processing & Pattern Recognition Shanghai Jiaotong Univ. Shanghai 200030 China

A novel dominant correlogram based particle filter was proposed for an object tracking in visual surveillance. Particle filter outperforms the Kalman filter in non-linear and non-Gaussian estimation problem. This paper proposed incorporating spatial information into visual feature, and yields a reliable likelihood description of the observation and prediction. A similarity-ratio is defined to evaluate the effectivity of different similarity measurements in weighing samples. The experimental results demonstrate the effective and robust performance compared with the histogram based tracking in traffic scenes.

关键词： dominant correlogram particle filter (PF) visual probabilistic tracking similarity-ratio

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Psychometric properties of the Chinese version of the Parent Perception of Uncertainty Scale(PPUS)among parents of children with cancer diagnosis

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International Journal of Nursing Sciences 2017年第3期4卷 278-284页

作者： Zeng Jie Ye Mei Ling Liu Zhang Zhang Kun Lun Liao Cai fen peng Hui Huang Yuan Liang Yu Hong Zhong Qiu Guangzhou University of Chinese Medicine GuangzhouGuangdong ProvinceChina Yale University New HavenCTUSA College of Economics and Management Guangzhou University of Chinese MedicineGuangzhouGuangdong ProvinceChina Sun Yat-sen University Cancer Center GuangzhouGuangdong ProvinceChina

Objective:Parents of children diagnosed with cancer often experience high levels of illness *** study evaluated the psychometric properties of the Chinese Version of the Parent Perception of Uncertainty Scale for Childhood Cancer(PPUS-CC)in China's ***:Exploratory factor analysis(EFA)and confirmatory factor analysis(CFA)were performed using study population of 420 *** participants were also given the social support questionnaire and assessed using the Self-Rating Anxiety Scale,Zarit Burden Interview,and Self-Rating Depression Scale to test the association with PPUS-CC and obtain the cut-off of the ***:The Chinese version of PPUS-CC includes 14 items,and two factors were extracted by EFA,which could explain the 54.56%*** Cronbach'sαof two factors ranged from 0.830 to *** dimensions of PPUS-CC show statistical association with other scales,and the cut-off is ***:The Chinese version of PPUS-CC,as a reliable,valid,and easy-to-use clinical tool,can be adapted in clinical settings as a screening tool to recognize parents with high-risk psychological problems.

关键词： Childhood cancer Parents'perception uncertainty in illness Scale Reliability Validity

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糖皮质激素对哮喘患儿的临床疗效及作用机制研究

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中国临床药理学杂志 2016年第1期32卷 3-5页

作者：彭芬黄华钱炜湖北民族学院附属民大医院新生儿科湖北恩施445000 镇江第一人民医院耳鼻咽喉科江苏镇江212002

目的探讨吸入型糖皮质激素对哮喘患儿的临床疗效及作用机制。方法 90例哮喘患儿随机分为试验组与对照组,各45例。对照组给予常规治疗,试验组在常规治疗基础上给予吸入型糖皮质激素治疗,5岁以下患儿给予丙酸氟替卡松气雾剂100.0~250.0μg... 详细信息

目的探讨吸入型糖皮质激素对哮喘患儿的临床疗效及作用机制。方法 90例哮喘患儿随机分为试验组与对照组,各45例。对照组给予常规治疗,试验组在常规治疗基础上给予吸入型糖皮质激素治疗,5岁以下患儿给予丙酸氟替卡松气雾剂100.0~250.0μg·d^(-1)雾化治疗,每天2次;5岁以上患儿给予布地奈德气雾剂200.0~400.0μg·d^(-1)雾化治疗,每天2次。连续治疗4周,观察2组患儿的临床疗效和血清神经营养素-3、外周血嗜酸性粒细胞的变化。结果试验组总有效率为95.56%,对照组总有效率为71.11%,试验组显著优于对照组(P<0.05)。治疗后,试验组与对照组血清神经营养素-3和外周血嗜酸性粒细胞较治疗前显著降低,试验组降低程度较对照组更显著(P<0.05)。结论哮喘患儿治疗的过程中加用糖皮质激素能提高临床疗效,其机制可能是降清血清神经营养素-3和外周血嗜酸性粒细胞计数,控制气道炎症反应。

关键词：小儿哮喘吸入型糖皮质激素神经营养素-3 嗜酸性粒细胞

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空气污染暴露公正异质性空间自相关分析

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测绘科学 2014年第5期39卷 104-108页

作者：彭芬邹滨邱永红中南大学地球科学与信息物理学院长沙410083 湖南师范大学资源与环境科学学院长沙410083

本文借助地理信息系统(GIS)空间分析、逻辑回归模型和空间自相关等技术,开展基于年龄、种族和受教育程度特征要素的空气污染暴露公正评价研究。结果表明:研究区基于这3个特征要素存在暴露不公正县域单元,但是仅有黑人(OR平均值为2.815)... 详细信息

本文借助地理信息系统(GIS)空间分析、逻辑回归模型和空间自相关等技术,开展基于年龄、种族和受教育程度特征要素的空气污染暴露公正评价研究。结果表明:研究区基于这3个特征要素存在暴露不公正县域单元,但是仅有黑人(OR平均值为2.815)和少于4年教育程度(OR平均值为1.682)的人群不公正特征明显;除印第安人和少于4年教育程度的人群组外,研究区基于3个特征要素的空间自相关格局都存在高-高集聚特征。

关键词： GIS 逻辑回归模型空间自相关空气污染暴露环境公正

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SnAgCu无铅焊膏可印刷性及焊点微观结构研究

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材料科学与工艺 2011年第6期19卷 106-111页

作者：刘文胜崔鹏马运柱彭芬黄国基中南大学粉末冶金国家重点实验室长沙410083

焊膏的印刷质量及焊点的微观结构直接影响产品的最终性能和使用效果.通过对焊膏印刷性能及焊点微观结构的研究,可以制定出合适的印刷和焊接工艺,从而提高产品的最终性能和使用效果.本文以紧耦合气雾化法制备的SnAgCu合金粉末为原料,对... 详细信息

焊膏的印刷质量及焊点的微观结构直接影响产品的最终性能和使用效果.通过对焊膏印刷性能及焊点微观结构的研究,可以制定出合适的印刷和焊接工艺,从而提高产品的最终性能和使用效果.本文以紧耦合气雾化法制备的SnAgCu合金粉末为原料,对不同质量配比下焊膏的流变和塌陷性能以及焊点的微观结构进行研究,采用旋转流变仪和扫描电镜分别对焊膏流变性能和焊点微观结构进行测试和观察.研究结果表明:焊膏黏度随合金粉末质量分数的增加而增大,但随着角速度的增大而减小;合金粉末质量分数为87.5%时所配制焊膏黏度为256.6 Pa.s,此时焊膏可印刷性好;焊膏焊接后焊点为圆形,饱满光亮,有少量助焊剂残留,其IMC层厚度为5～10μm,成分为Cu6Sn5.

关键词： SnAgCu无铅焊膏黏度塌陷性微观结构

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民族地区企业人力资源战略体系构建

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新疆师范大学学报（哲学社会科学版） 2014年第3期35卷 103-107页

作者：彭芬刘淑芹中央民族大学管理学院北京100081

文本针对民族地区企业成长相对缓慢的现状,结合企业成长对人力资源的需求以及民族地区人力资源新形势,从基础层、分析层、战略层三个层级构建了促进民族地区企业成长的人力资源战略体系。以期通过完善民族地区的人力资源战略体系建设,... 详细信息

文本针对民族地区企业成长相对缓慢的现状,结合企业成长对人力资源的需求以及民族地区人力资源新形势,从基础层、分析层、战略层三个层级构建了促进民族地区企业成长的人力资源战略体系。以期通过完善民族地区的人力资源战略体系建设,推动民族地区企业的成长,进而带动民族地区经济的发展,促进民族地区社会的发展与稳定。

关键词：企业管理民族地区企业成长人力资源人力资源战略战略体系

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钎焊工艺对InAg低温焊料结构及剪切性能的影响

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中南大学学报（自然科学版） 2011年第12期42卷 3674-3679页

作者：刘文胜黄国基马运柱彭芬崔鹏中南大学粉末冶金国家重点实验室湖南长沙410083

针对不同回流工艺曲线对In3Ag焊膏焊点表面形貌、界面IMC(Intermetallic compound)层和剪切强度的影响进行研究。采用扫描电镜(SEM)和能量色散谱仪(EDS)分别对IMC层的微观结构和焊点的组织成分进行观察和分析,采用力学试验机测试焊点的... 详细信息

针对不同回流工艺曲线对In3Ag焊膏焊点表面形貌、界面IMC(Intermetallic compound)层和剪切强度的影响进行研究。采用扫描电镜(SEM)和能量色散谱仪(EDS)分别对IMC层的微观结构和焊点的组织成分进行观察和分析,采用力学试验机测试焊点的剪切强度,并通过SEM观察其断口形貌。研究结果表明:IMC层厚度随钎焊曲线峰值温度升高而增加,焊点剪切强度随峰值温度升高而降低,断裂模式为韧性断裂。其合适的钎焊工艺为峰值温度160℃,并在150℃保温1 min,可得到表面光亮、润湿性能好、助焊剂残留少的焊点,其基体为富In相,在基体上弥散分布着AgIn2颗粒,IMC层是均匀、致密的扇贝状结构,厚度约为3μm,成分约为(Ag0.8Cu0.2)In2;在此条件下,焊点剪切强度最高,为7.24 MPa。

关键词： InAg 焊料钎焊金属间化合物剪切性能

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Modulated noble metal/2D MOF heterostructures for improved hydrogen storage of MgH_(2)

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Rare Metals 2024年第4期43卷 1672-1685页

作者： Zeng-Yi Li Li-Xian Sun fen Xu Yu-Mei Luo Yong-peng Xia Sheng Wei Chen-Chen Zhang Ri-Guang Cheng Chao-feng Ye Meng-Yuan Liu Ju-Lan Zeng Zhong Cao Hong-Ge Pan School of Material Science and Engineering Guilin University of Electronic TechnologyGuilin541004China School of Chemistry and Chemical Engineering Changsha University of Science and TechnologyChangsha410114China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an710021China

The conjugation of external species with twodimensional(2D)materials has broad application *** this study,we have explored the potential of noble metal/2D MOF heterostructures in hydrogen ***,the MgH_(2)-Ni-MOF@Pd system has shown remarkable hydrogen desorption/sorption performances,starting to liberate hydrogen at 1810C,which is 2300C lower than that of pristine *** the catalytic effect of Ni-MOF@Pd,the dehydrogenation apparent activation energy of MgH2 is noticeably decreased from(133.5±17.5)to(34.58±1.87)kJ·moL^(-1),and the hydrogenation apparent activation energy is reduced from(70.41±7.43)to(25.78±4.64)kJ·moL^(-1),which is lowered by 63.4%.The fully-dehydrogenated MgH2-NiMOF@Pd composite rapidly uptakes hydrogen,with 2.62wt%at 100℃and 6.06 wt%at 150℃within 300 s,*** mechanism analysis of MgH2 catalyzed by Ni-MOF@Pd has revealed that the transformation of Mg_2Ni and Mg_2NiH_4 could act as a"hydrogen pump",providing numerous channels for fast diffusion and transport of hydrogen ***,in the dehydrogenation process,the element Pd reacts with MgH_(2)to form the MgPd alloy phase,which makes MgH_(2)take precedence to decompose through the Mg-Pd alloy rather than self-decomposition,further reducing thermal stability and improving de/hydrogenation *** synergistic effect of Mg-Pd,Mg_2Ni,and the special ultra-thin 2D sheet structure of the additive is the main reason for the good hydrogen storage property of MgH_(2)-Ni-MOF@*** findings provide inspiration for designing efficient multifunctional additives with unique morphologies to optimize the hydrogen desorption/sorption behaviors of hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride 2D metal-organic framework nanosheets Ni/Pd Synergistic catalysis

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