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Atomic insights of electronic states engineering of GaN nanowires by Cu cation substitution for highly efficient lithium ion battery

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Journal of Energy Chemistry 2022年第4期31卷 46-54页

作者： Zhenjiang li Kesheng Gao Ying Han Shiqi Ding Yanglansen Cui Minmin Hu Jian Zhao Meng Zhang Alan Meng Jimmy Yun Zhiming liu Da-Wei Wang changlong Sun College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina School of Chemical Engineering The University of New South WalesSydneyNSW 2052Australia Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdao 266061ShandongChina Key Laboratory of Optic-electric Sensing and Analytical Chemistry for life Science MOECollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina Qingdao International Academician Park Research Institute QingdaoShandong 266000China School of Materials Science and Engineering Beihang University100191 BeijingChina School of Materials Science and Engineering Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina

Electronic engineering of gallium nitride(Ga N) is critical for enhancement of its electrode performance.In this work, copper(Cu) cation substituted Ga N(Cu-Ga N) nanowires were fabricated to understand the electronically engineered electrochemical performance for li ion storage. Cu cation substitution was revealed at atomic level by combination of X-ray photoelectron spectroscopy(XPS), X-ray absorption fine structure(XAFS), density functional theory(DFT) simulation, and so forth. The Cu-Ga N electrode delivered high capacity of 813.2 m A h g^(-1) at 0.1 A g^(-1) after 200 cycles, increased by 66% relative to the unsubstituted Ga N electrode. After 2000 cycles at 10 A g^(-1),the reversible capacity was still maintained at326.7 m A h g^(-1). The DFT calculations revealed that Cu substitution introduced the impurity electronic states and efficient interatomic electron migration, which can enhance the charge transfer efficiency and reduce the li ion adsorption energy on the Cu-Ga N electrode. The ex-situ SEM, TEM, HRTEM, and SAED analyses demonstrated the reversible intercalation li ion storage mechanism and good structural stability. The concept of atomic-arrangement-assisted electronic engineering strategy is anticipated to open up opportunities for advanced energy storage applications.

关键词： Cu cation substitution Electronic states engineering GaN nanowires lithium-ion batteries DFT

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表达猪源GM-CSF重组PRRSV疫苗对同源高致病性毒株的免疫保护效力评价

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中国动物传染病学报 2024年第2期32卷 106-112页

作者：虞凌雪姜一峰杨莘于海周艳君童武高飞李国新刘长龙郑浩单同领李丽薇孔宁童光志中国农业科学院上海兽医研究所上海200241 扬州大学江苏省动物重要疫病与人兽共患病防控协同创新中心扬州225009

为研究表达猪源粒细胞-巨噬细胞集落刺激因子(GM-CSF)的重组猪繁殖与呼吸综合征病毒(PRRSV)在动物体内的免疫调节特性及对其的保护效力评价,本研究将15头30日龄仔猪随机分成4组,空白对照组(DMEM)4头、疫苗对照组(HuN4-F112株)4头、疫苗... 详细信息

为研究表达猪源粒细胞-巨噬细胞集落刺激因子(GM-CSF)的重组猪繁殖与呼吸综合征病毒(PRRSV)在动物体内的免疫调节特性及对其的保护效力评价,本研究将15头30日龄仔猪随机分成4组,空白对照组(DMEM)4头、疫苗对照组(HuN4-F112株)4头、疫苗组(rPRRSV-GM-CSF株)3头和攻毒对照组(DMEM^(+)HuN4株)4头。疫苗对照组肌注免疫HuN4-F112株10^(5) TCID_(50)/头、疫苗组肌注免疫rPRRSV-GM-CSF株10^(5) TCID_(50)/头,实验空白组和攻毒对照组肌注DMEM 2 mL/头,免疫后28 d,疫苗组、疫苗对照组和攻毒对照组肌注HuN4株(10_(5) TCID_(50)/头)。攻毒后的试验结果表明,免疫rPRRSV-GM-CSF重组病毒组和疫苗株HuN4-F112组获得完全保护,阴性对照组全部死亡;通过IDEXX试剂盒检测仔猪血清中PRRSV抗体水平可知,在免疫14 d后,疫苗组抗体水平显著高于疫苗对照组(P<0.05);由流式细胞术分析体内免疫细胞亚群比例可知,疫苗组同疫苗对照组相比,疫苗组的重组疫苗株能够引起免疫记忆细胞亚群CD4^(+)CD8^(+)T在免疫后28 d显著升高,以及引发攻毒后其抗原递呈细胞显著增多,进而促进CD4-CD8^(+)T的增殖以发挥抗病毒免疫应答。本研究筛选出了一株具有改善HuN4-F112弱毒疫苗株免疫效果的重组病毒rPRRSV-GM-CSF,为进一步研发广谱通用的新型疫苗奠定基础。

关键词： rPRRSV-GM-CSF 免疫记忆细胞T淋巴细胞杀伤性T淋巴细胞

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Development of an effective microsatellite marker system to determine the genetic structure of Meriones meridianus populations

Development of an effective microsatellite marker system to ...

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第十六届中国实验动物科学年会

作者： Xin liu Xiuyi Yu Yimei Xu Xiaoyan Du Xueyun Huo changlong li Jianyi Lv Meng Guo Jing Lu Zhenwen Chen Department of Medical Genetics and Developmental Biology Capital Medical University Center for Laboratory Animal Research of Xinjiang Center for Disease Control of Xinjiang

Understanding the genetic quality of the gerbil,Meriones meridianus,plays an important role in the study of medical biology.However,no effective system has been established for evaluating a population’s genetic diversity to date.In the present study,we established a set of reasonable evaluative systems based on microsatellite markers of the Mongolian gerbil by using the method of cross-amplification of species.Following electrophoresis analysis,short tandem repeat(STR) scanning,and sequencing,11 microsatellite loci were identified by matching the criteria characteristics and were used to evaluate the genetic diversity of two stocks of Meriones meridianus:Meriones meridianus jei Wang,1964(M.m.jei) and Meriones meridianus cryptorhinus Blanford,1875(M.m.ryptorhinus) from Xinjiang,China.The microsatellite loci screened were highly polymorphic and were suitable for genetic quality control of Meriones meridianus.In addition,the quality of the non-bred M.m.jei and M.m.cryptorhinus strains in our study is sufficient for them to be promising stocks in the future for the farmed animal industry.

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Numerical study of coarse coal particle breakage in pneumatic conveying

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Particuology 2018年第3期16卷 204-214页

作者： Jiawei Zhou Yu liu changlong Du Songyong liu Jianping li School of Mechatronic Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China School of Mechanical and Power Engineering Henan Polytechnic University Jiaozuo 454000 Henan China

Pneumatic conveying of coarse coal particles with various pipeline configurations and swirling intensities was investigated using a coupled computational fluid dynamics and discrete element method. A particle cluster agglomerated by the parallel-bond method was modeled to analyze the breakage of coarse coal particles. The numerical parameters, simulation conditions, and simulation results were experimentally validated. On analyzing total energy variation in the agglomerate during the breakage process, the results showed that downward fluctuation of the total particle energy was correlated with particle and wall col- lisions, and particle breakage showed a positive correlation with the energy difference. The correlation between the total energy variation of a particle cluster and particle breakage was also analyzed. Parti- cle integrity presented a fluctuating upward trend with pipe bend radius and increased with swirling number for most bend radii. The degree of particle breakage differed with pipeline bending direction and swirling intensity： in a horizontal bend, the bend radius and swirling intensity dominated the total energy variations： these effects were not observed in a vertical bend. The total energy of the particle cluster exiting a bend was generally positively correlated with the bend radius for all conditions and was independent of bending direction.

关键词： Computational fluid dynamics-discreteelement method Pneumatic conveying Pipeline configuration Swirling intensity Coarse coal particle Breakage

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Influences of Reservoir Heterogeneity and Anisotropy on CO_2 Sequestration and Heat Extraction for CO_2-Based Enhanced Geothermal System

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Journal of Thermal Science 2019年第2期28卷 319-325页

作者： WANG changlong HUANG Zhijia LU Yuehong TANG Gang li Huan School of Civil Engineering and Architecture Anhui University of Technology

Enhanced geothermal systems(EGS) have a great potential to extract geothermal energy and have attracted much interest. In this paper, based on a 3D thermal-hydrologic model considering CO_2 sequestration, the influences of reservoir heterogeneity and anisotropy on CO_2 sequestration and heat extraction in CO_2-based EGS are investigated. Different heterogeneous reservoirs and homogeneous reservoir are compared, and different ratios among reservoir permeability components are compared. The results show that greater reservoir heterogeneity enhances CO_2 sequestration and restrains heat extraction. Higher ratio between horizontal(x and y directions) and vertical permeability components enhances CO_2 sequestration and heat extraction, and vertical permeability component has a little effect. With the increasing ratio between x-directional(perpendicular to the line of the injection well and the production well) and y-directional(perpendicular to x direction) reservoir permeability components(i.e. kx:ky), both CO_2 sequestration amount and steady-state heat extraction rate first increase and then decrease, and thermal breakthrough time increases, showing that there exists an optimum kx:ky, which is about 1:1. The results of this paper indicate that reservoir heterogeneity and anisotropy have important influences on CO_2 sequestration and heat extraction.

关键词： enhanced geothermal system CO2 sequestration heat extraction reservoir heterogeneity reservoir anisotropy

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Radiation Damage and Recovery in Neutron-Irradiated MgO Crystal

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Journal of Rare Earths 2006年第Z1期24卷 56-58页

作者： Ruan Yongfeng Ma Pengfei liu Jian li Wenrun liu changlong School of Science Tianjin University Tianjin 300072 China School of Science Tianjin University Tianjin 300072 China School of Science Tianjin University Tianjin 300072 China School of Science Tianjin University Tianjin 300072 China School of Science Tianjin University Tianjin 300072 China

MgO single crystal was irradiated by neutron up to a dose of 5.74×1018 cm-2. The radiation damage and its recovery were studied by means of UV-VIS and EM spectroscopy. The results indicate that the irradiation generates large amount of optically detectable defects such as single anion vacancies (F+ center), anion divacancies (F2) and some higher order defects. Through isochronal annealing, these defects started a series of processes of diminishing and transforming, and finally all disappeared while annealing at 900 ℃. It seems that the absorption bands of 573 nm are resulted from a higher order and more complex aggregated center than that of 424, 451 nm bands.

关键词： MgO neutron irradiation defects absorption spectra

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Chiral Nanoprobes and Their Biological Effects

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Chinese Journal of Chemistry 2021年第1期39卷 25-31页

作者： Maozhong Sun Si li changlong Hao Chuanlai Xu Hua Kuang International Joint Research Laboratory for Biointerface and Biodetection Jiangnan UniversityWuxiJiangsu 214122China State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxiJiangsu 214122China

Chirality is an essential property of nature.The emergence of chiral material in nanoscale has shown great promise in the investigation of biological interfaces,chiral optical devices,metamaterials and the origin of chirality.In the present study,we focused on fabricating chiral nanoprobes and their applications in living systems.Through precise synthesis or the self-assembly of various chiral configurations,significant research achievements have been obtained by our group.In this brief introduction,we will discuss the recent progress of chiral nanostructures in the selective recognition of biomolecules,ultrasensitive detection and their interaction with living cells.

关键词： Chirality Self-assembly Nanoparticle Cell Detection Biomolecule

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Direct-impact of sieving coal and gangue

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Mining Science and Technology 2010年第4期20卷 611-614页

作者： li Jianping DU changlong BAO Jianwei School of Mechanical and Electrical Engineering China University of Mining&TechnologyXuzhou 221116China

Gangue from underground separation of coal can directly be used for filling mined out areas, saving transport capacity and reducing the amount of waste polluting the environment above the ground. We introduced a structure and operating principle of an underground direct-impact sieving device by which a separation experiment was carried out. By means of high speed conveyer belts, coal and gangue impacted the breaking board at high speeds ranging from 6 to 14 m/s. Given the differences of hardness between coal and gangue, after selective crushing, the gangue with the higher hardness was crushed less and coal with lower hardness crushed more, which could be separated by a 50 mm sieving plate. The material above the sieving plate was disposed of as gangue and the material below as coal. The results indicate that the crush ratio below the 50 mm sieving plate increases linearly with an increase in impact velocity and decays exponentially with an increase in hardness. Employing this equipment to separate coal and gangue, the hardness of coal f should be <2. This separation device provides relatively good effect in separating coal and gangue with a relatively wide difference of hardness.

关键词： separation of coal and gangue direct-impact sieving difference of hardness selective crushing

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非洲猪瘟病毒CP312R基因编码蛋白的原核表达及多克隆抗体的制备与应用

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中国兽医学报 2024年第1期44卷 1-6页

作者：刘佳晨郭子强陈金霞曹云雷童武乔思娜刘长龙赵冉郑海红童光志李丽薇高飞中国农业科学院上海兽医研究所上海200241 扬州大学江苏省动物重要疫病与人兽共患病防控协同创新中心江苏扬州225009 厦门市动物疫病预防控制中心福建厦门361009

为制备ASFV CP312R基因编码蛋白的多克隆抗体,利用PCR方法从非洲猪瘟病毒(African swine fever virus,ASFV)的灭活样品中扩增出924 bp的CP312R基因全长序列,利用同源重组法构建出原核表达质粒pCold-Ⅰ-ASFV-CP312R,将其转化至原核表达... 详细信息

为制备ASFV CP312R基因编码蛋白的多克隆抗体,利用PCR方法从非洲猪瘟病毒(African swine fever virus,ASFV)的灭活样品中扩增出924 bp的CP312R基因全长序列,利用同源重组法构建出原核表达质粒pCold-Ⅰ-ASFV-CP312R,将其转化至原核表达感受态细胞BL21中,经1 mmol/L的IPTG低温条件下诱导表达CP312R编码蛋白并经过镍柱亲和层析纯化后,利用SDS-PAGE对重组蛋白进行表达鉴定和反应原性分析,表达蛋白的相对分子质量约为34 kDa,通过Western blot分析,该蛋白能被ASFV抗体特异性识别。将所得的蛋白经处理纯化后免疫小鼠3次,得到含多克隆抗体的血清。利用该抗体检测实验室构建并拯救的表达ASFV CP312R基因编码蛋白的重组猪繁殖与呼吸综合征病毒(porcine reproductive and respiratory syndrome virus,PRRSV),结果显示该多抗具有良好的反应原性和特异性,并且证明了ASFV CP312R基因编码蛋白可在PRRSV活载体中稳定表达。

关键词：非洲猪瘟病毒 CP312R基因原核表达多克隆抗体

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Caching resource management of mobile edge network based on Stackelberg game

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Digital Communications and Networks 2019年第1期5卷 18-23页

作者： Qiang li changlong Lu Bin Cao Qinyu Zhang School of Electronic and Information Engineering Harbin Institute of Technology (Shenzhen) Shenzhen Guangdong 518055 China School of Mechanical and Electronic Engineering Jingdezhen Ceramic Institute Jingdezhen Jiangxi 333000 China Pengcheng Lab Shenzhen Guangdong 518100 China

Mobile edge caching technology is gaining more and more attention because it can effectively improve the Quality of Experience (QoE) of users and reduce backhaul burden. This paper aims to improve the utility of mobile edge caching technology from the perspectie of caching resource management by examining a network composed of one operator, multiple users and Content Providers (CPs). The caching resource management model is constructed on the premise of fully considering the QoE of users and the servicing capability of the Base Station (BS). In order to create the best caching resource allocation scheme, the original problem is transformed into a multi-leader multi-follower Stackelberg game model through the analysis of the system model. The strategy combinations and the utility functions of players are analyzed. The existence and uniqueness of the Nash Equilibrium (NE) solution are also analyzed and proved. The optimal strategy combinations and the best responses are deduced in detail. Simulation results and analysis show that the proposed model and algorithm can achieve the optimal allocation of caching resource and improve the QoE of users.

关键词： Stackelberg game Caching resource management Quality of Experience Mobile edge caching

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