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Structural, mechanical, electronic properties, and Debye temperature of quaternary carbide Ti3NiAl2C ceramics under high pressure: A first-principles study

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Chinese Physics B 2021年第3期30卷 416-422页

作者： Diyou Jiang wenbo xiao Sanqiu Liu Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063China Fujian Science&Technology Innovation Laboratory for Energy Devices of China(21C-LAB) Ningde 352100China Department of Physics Nanchang UniversityNanchang 330047China

Quaternary carbide Ti3NiAl2C ceramics has been investigated as a potential nuclear fusion structural material,and it has advantages in certain aspects compared with Ti2AlC,Ti3AlC2,and Ti3SiC2 structural *** this paper,quaternary carbide Ti3NiAl2C ceramics is pressurized to investigate its structural,mechanical,electronic properties,and Debye *** carbide Ti3NiAl2C ceramics still maintains a cubic structure under pressure(0–110 GPa).At zero pressure,quaternary carbide Ti3NiAl2C ceramics only has three bonds:Ti–Al,Ni–Al,and Ti–***,at pressures of 20 GPa,30 GPa,40 GPa,60 GPa,and 70 GPa,new Ti–Ni,Ti–Ti,Al–Al,Ti–Al,and Ti–Ti bonds *** the pressure reaches 20 GPa,the covalent bonds change to metallic *** volume of quaternary carbide Ti3NiAl2C ceramics can be compressed to 72%of its original volume at *** can improve the mechanical strength and ductility of quaternary carbide Ti3NiAl2C *** 50–60 GPa,its mechanical strength can be comparable to pure tungsten,and the material changes from brittleness to ***,the degree of anisotropy of quaternary carbide Ti3NiAl2C ceramics increases with the increasing *** addition,we also investigated the Debye temperature,density,melting point,hardness,and wear resistance of quaternary carbide Ti3NiAl2C ceramics under pressure.

关键词： quaternary carbide Ti3NiAl2C ceramics structural properties mechanical properties electronic properties Debye temperature first-principles

Synthesis of Hydroxyapatite Nanorods under Mild Conditions and Their Drug Release Properties

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Chinese Journal of Chemistry 2015年第9期33卷 1024-1030页

作者： Deyan Kong Xinli xiao Xueying Qiu wenbo Zhang Yulin Yang Department of Chemistry School of Science Harbin Institute of Technology Harbin Heilongjiang 150001 China

Hydroxyapatite （HAp） nanorods possess vast potential applications in various fields, and here HAp nanorods with high aspect ratio were synthesized via a convenient two-stage precipitation-hydrolysis process at 60℃ under atmospheric pressure. The precursor of CaHPO4 at precipitation stage is well crystallized as nubby morphology with CTAB as surfactant, while CaHPO4 was dissolved and CTA＋ stabilized the HAp nuclei during the hydrolysis stage. OH- ions were absorbed onto the active crystal surface, where Ca2＋ and PO4 3- reacted with OH- to make the nuclei grow into larger crystals, and highly crystalline HAp nanorods were obtained by Ostwald ripening. The loaded drug of IBU on the HAp crystals can be 100% released in 24 h. PVP modified HAp nanorods can increase the drug-loading capacity and release drug faster than pure HAp nanorods. The results indicate that HAp nanorods modified with suitable surfactants are of great use in drug delivery system.

关键词： synthesis design nanoparticles drug delivery crystal growth

Study on impedance spectroscopy based on dynamic equivalent circuit of solar cell

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Optoelectronics Letters 2024年第8期20卷 449-453页

作者： xiao wenbo LI Ao WU Huaming LI Yongbo xiao Bangzhi Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063China Jiangxi Engineering Laboratory for Optoelectronics Testing Technology Nanchang 330063China College of Science and Technology Nanchang Hangkong UniversityGongqingcheng 332020China School of Engineering and Construction Nanchang UniversityNanchang 330031China

This paper investigates the impedance spectroscopy of monocrystalline silicon solar cells(MSSC)and dye-sensitized solar cells(DSSC)using solar cell dynamic equivalent resistor-capacitance(RC)and capacitor sum capacitor(CSC)***,these circuits effectively represent the dynamic behavior of MSSC and ***,the measurement method significantly impacts the accuracy of impedance measurements in the high-frequency ***,the series resistance affects the distance between the left end of the impedance spectroscopy and the origin,while the parallel resistance influences the size of the impedance *** the CSC circuit,the relative magnitudes of dielectric relaxation capacitance and chemical capacitance affect the number and position of arc in the impedance *** value of the dielectric relaxation capacitor determines the number of impedance spectroscopy *** conclusions provide guidelines for improving the accuracy of solar cell impedance measurements.

关键词： spectroscopy impedance capacitance

Weld Geometry Monitoring for Metal Inert Gas Welding Process with Galvanized Steel Plates Using Bayesian Network

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Journal of Shanghai Jiaotong university(Science) 2021年第2期26卷 239-244页

作者： MA Guohong LI Jian HE Yinshui xiao wenbo Key Laboratory of Lightweight and High Strength Structural Materials of Jiangxi Province School of Mechanical and Electrical EngineeringNanchang UniversityNanchang 330031China School of Environment and Chemical Engineering Nanchang UniversityNanchang 330031China Key Laboratory of Nondestructive Testing Ministry of Education Nanchang Hangkong UniversityNanchang 330063China

We present a novel method to monitor the weld geometry for metal inert gas(MIG)welding process with galvanized steel plates using Bayesian network(BN),and propose an effective method of extracting the weld reinforcement and width *** laser vision sensor is mounted after the welding torch and used to profile the *** the extracted weld geometry and the adopted process parameters,a back propagation neural network(BPNN)is constructed offline and used to predict the weld reinforcement and width corresponding to the current parameter settings.A BN from welding experience and tests is presented to implement the decision making of welding current/voltage when the error between the predictive geometry and the actual one *** study can deal with the negative welding tendency to adapt to welding randomness and indicates a valuable application prospect in the welding field.

关键词： galvanized steel plate weld geometry laser vision sensor Bayesian network(BN) back propagation neural network(BPNN)

Study on the growth of honeycomb-like film of basic zinc carbonate induced by bovine serum albumin LB film template

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日用化学工业（中英文） 2024年第12期54卷 1431-1436页

作者： Haiwei Wang wenbo xiao Xiuling Jia Yang xiao Zuliang Du Nanchang Hangkong University Science and Technology CollegeNanchangJiangxi 330034China Nanjing Vocational University of Industry Technology NanjingJiangsu 210036China School of Materials Henan UniversityKaifengHenan 475004China

Honeycomb-like films of basic zinc carbonate were successfully prepared on FTO(SnO_(2):F)conductive glass using bovine serum albumin(BSA)as a template at room *** low-temperature annealing,a high-specific-surface-area porous ZnO film with excellent electron mobility was *** surface morphology,crystallization performance,and photoluminescence characteristics of basic zinc carbonate thin films and annealed ZnO thin film were analyzed by scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),photoluminescence spectroscopy(PL)and UV-Visible spectroscopy(UV-vis).By comparing with those samples prepared without any protein,it was determined that the complexation between BSA molecules and Zn^(2+)ions was the primary factor in the synthesis of porous films of basic zinc *** experimental results showed that the ZnO thin film samples prepared with this method had high specific surface area and broadband luminescence characteristics in the near ultraviolet range.

关键词： biomimetic mineralization basic zinc carbonate film honeycomb structure photoelectrochemical properties

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颗粒物质中滑动摩擦力的变化规律

应用力学学报 2005年第4期22卷 643-646页

作者：肖文波胡林武玉琴贵州大学贵阳550025

通过提拉插入颗粒物质中的圆棒,测量并研究了圆棒与颗粒物质之间的滑动摩擦力。实验结果表明,滑动摩擦力F明显不同于连续介质固体之间的摩擦力规律,而是随测量时间t成非线性上升;做功率谱分析后,发现功率S(f)与频率f存在幂指数的关系,即... 详细信息

通过提拉插入颗粒物质中的圆棒,测量并研究了圆棒与颗粒物质之间的滑动摩擦力。实验结果表明,滑动摩擦力F明显不同于连续介质固体之间的摩擦力规律,而是随测量时间t成非线性上升;做功率谱分析后,发现功率S(f)与频率f存在幂指数的关系,即S(f)∝f-1.80±0.05;这说明颗粒物质在外界扰动下存在不断的崩塌重组过程,此过程可利用自组织临界模型得到较好的解释。此研究使我们进一步认识了颗粒物质的摩擦力特性。

关键词：颗粒物质滑动摩擦力功率谱自组织临界

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太阳电池工程数学模型精确度对比分析研究

太阳能学报 2016年第3期37卷 703-708页

作者：肖文波胡方雨戴锦谭云南昌航空大学无损检测技术教育部重点实验室南昌330063 江西洪都航空工业集团有限公司南昌330024

基于太阳电池相关文献参数,对比研究并分析太阳电池单指数二极管电流输出方程与8种工程数学模型之间的绝对误差及均方根误差。结果表明,8种工程数学模型总体上均能正确重现太阳电池性能,但均存在绝对误差随电压的增大而增大的现象;原因... 详细信息

基于太阳电池相关文献参数,对比研究并分析太阳电池单指数二极管电流输出方程与8种工程数学模型之间的绝对误差及均方根误差。结果表明,8种工程数学模型总体上均能正确重现太阳电池性能,但均存在绝对误差随电压的增大而增大的现象;原因是工程模型无法描述电池非线性特性随着电压增大而显著增强的现象。此外,发现尽管不同假设条件下8种工程数学模型对各类太阳电池性能的重现存在适用范围,但在帕德逼近下建立的多项式形式模型误差最小,原因在于帕德逼近下的展开最能逼近e指数特征。

关键词：太阳电池单指数二极管电流输出方程工程数学模型对比分析

Construction of a broadband impedance spectrum and synchronous DC voltammetry measurement system for solar cells

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Journal of Measurement Science and Instrumentation 2024年第3期15卷 302-307页

作者： xiao wenbo LI Ao WU Huaming LI Yongbo College of Science and Technology Nanchang Hangkong UniversityJiujiang 332020China Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Nondestructive Testing of Ministry of Education Nanchang Hangkong UniversityNanchang 330063China

The current impedance spectroscopy measurement techniques face difficulties in diagnosing solar cell faults due to issues such as cost,complexity,and ***,a novel system was developed for precise broadband impedance spectrum measurement of solar cells,which was composed of an oscilloscope,a signal generator,and a sampling *** results demonstrate concurrent accurate measurement of the impedance spectrum(50 Hz-0.1 MHz)and direct current voltametric *** analysis with Keithley 2450 data yields a global relative error of approximately 6.70%,affirming the *** excitation signals(sine,square,triangle,pulse waves),sine wave input yields the most accurate data,with a root mean square error of approximately 13.3016 and a global relative error of approximately 4.25%compared to theoretical *** reference resistance expands the half circle in the impedance *** of reference resistance to that of the solar cell enhances the accuracy by mitigating line resistance *** error is lower in high-frequency regions due to a higher signal-to-noise ratio.

关键词： solar cell oscilloscope signal generator volt-ampere characteristics impedance spectrum

肝移植术后稳定期4种抗排斥方案对血糖的影响

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重庆医学 2011年第6期40卷 540-541,544页

作者：肖文波郑军重庆医科大学附属第一医院肝胆外科 400016

目的回顾性研究分析肝移植术后稳定期4种抗排斥方案应用中出现的血糖异常反应,并对其病因及处理措施进行讨论。方法对肝移植术后稳定期4种抗排斥方案[他克莫司(FK506)联合吗替麦考酚酸酯(MMF)、FK506联合西罗莫司(SRL)、环孢菌素A(CsA)... 详细信息

目的回顾性研究分析肝移植术后稳定期4种抗排斥方案应用中出现的血糖异常反应,并对其病因及处理措施进行讨论。方法对肝移植术后稳定期4种抗排斥方案[他克莫司(FK506)联合吗替麦考酚酸酯(MMF)、FK506联合西罗莫司(SRL)、环孢菌素A(CsA)联合MMF、CsA联合SRL]应用中出现的血糖异常反应进行回顾性研究分析,观察空腹血糖受损(im-paired fasting glucose,IFG)、葡萄糖耐量异常(impaired glucose tolerance,IGT)及移植后糖尿病(post transplantation diabetes mellitus,PTDM)的发生率及其对血糖值的影响情况,对其病因及处理措施进行总结和比较。结果 FK506联合MMF组(A组)、FK506联合SRL组(B组)平均血糖水平均高于CsA联合MMF组(C组)和CsA联合SRL(D组),差异均有统计学意义(P0.05);IFGI、GT、PTDM发生率在各组间进行两两比较差异均无统计学意义(P>0.05)。结论 FK506相对于CsA对肝移植受者术后的血糖有较大影响,应用以CsA为基础的抗排斥方案,可以降低对患者糖代谢的影响;MMF、SRL对肝移植受者术后的血糖影响相似。

关键词：肝移植免疫抑制法高血糖症