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Journal of Wuhan University of Technology(Materials Science) 2023年第2期38卷 274-279页

作者： HAO Zhenbang TIAN Qihang CAO Shiyi HAN Xiaoyu zhang jihong XIE Jun ZHAO Xiujian State Key Laboratory of Silicate Materials for Architectures(Wuhan University of Technology) Wuhan430070China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan430070China Hainan Research Institute of Wuhan University of Technology Sanya572100China

Novel hollow Au Ag alloy nano urchins were synthesized via Ag seeds growth method,and self-assembly coated on the wall and end-tip of silica fiber for fiber probe fabrication.The nano urchins homogeneously distributed on fiber surface because of fiber silanization.The sizes and tip sharpness of the nano-urchins could be controlled by Ag seeds.The elements distribution analysis indicated there was high Ag content in tip-top for better surface enhance Raman scattering performance.The detectable concentration could be as low as 10-8 M using crystal violet molecules as analyte.Moreover,the fiber probes were stable in air,due to Au in the alloy.This fiber probe could be used for low content single molecular analysis.

关键词： surface enhanced raman spectroscopy hollow Au-Ag alloy nano urchins fiber probe

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基于RBF神经网络滑模控制的卷纸纠偏系统

中国造纸学报 2024年第1期39卷 107-113页

作者：张继红四川职业技术学院智能制造学院四川遂宁629000

设计了采用RBF神经网络控制的伺服纠偏控制系统,通过建立其动力学模型,运用MATLAB/Simulink仿真软件仿真,并进行实验验证,分析系统动态性能,得到响应曲线。结果表明,在拉纸速度65 mm/s下,跑偏量从1.5 mm降低到0.55 mm,该伺服系统位移和... 详细信息

设计了采用RBF神经网络控制的伺服纠偏控制系统,通过建立其动力学模型,运用MATLAB/Simulink仿真软件仿真,并进行实验验证,分析系统动态性能,得到响应曲线。结果表明,在拉纸速度65 mm/s下,跑偏量从1.5 mm降低到0.55 mm,该伺服系统位移和速度跟踪误差均较小。

关键词：卷纸纠偏控制 RBF神经网络滑模控制 MATLAB/Simulink 动态性能

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Na_(2)O/Li_(2)O Ratio Dependency on the Thermal,Mechanical,Dielectric Properties and Chemical Stabilities of Li_(2)O-Al_(2)O_(3)-SiO_(2) Glass

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Journal of Wuhan University of Technology(Materials Science) 2022年第6期37卷 1129-1136页

作者：陈丽娜谢俊 WANG Mingzhong CAO Shiyi CUI Xiuzhen LIANG Xinhui zhang jihong HAN Jianjun HU Kaiwen State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Shenzhen Research Institute of Wuhan University of Technology Shenzhen 518000China Xianning Nanbo Photoelectric Glass Co.Ltd. Xianning 437100China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

Li_(2)O-Al_(2)O_(3)-SiO_(2) based glasses were investigated as potential protection glass for electronic devices due to their excellent mechanical properties,such as high hardness,toughness,and scratch resistance.In this paper,Li_(2)O-Na_(2)O-Al_(2)O_(3)-SiO_(2) glass with different Li_(2)O/Na_(2)O ratio components were prepared by meltquenching method,and the effects of Na_(2)O/Li_(2)O ratio on the glass densities,structure,thermal,mechanical properties,and chemical stabilities were studied.The experimental results indicate that the glass transition temperature increases with the increases in Na_(2)O/Li_(2)O ratios,due to larger ion radius.While the thermal expansion coefficient slightly decreases from 11.4×10^(-6) to 11.09×10^(-6)/℃.The elastic modulus increases from 57 to 72 GPa.The bending strength reaches maximum 80.90 MPa when the Na_(2)O/Li_(2)O ratio is 1.7,then decreases as the ratio further increases.In addition,the Vicker’s hardness gets to 7.37 GPa with largest Na_(2)O/Li_(2)O ratio.Moreover,the dielectric loss and dielectric constant increases as the ratio increases.The Raman structure analysis shows the Q4[Si-O-Si]decreases as Na_(2)O/Li_(2)O ratio increases,which is responsible for the characteristic properties change.Moreover,the glass shows lowest mass loss in 10vol%HF solutions when the ratio is 1.4,while 1.7 in 5wt%NaOH solution.

关键词： glass composition dielectric constant coefficient of thermal expansion elastic modulus

Near-field radiative heat transfer between nanoporous GaN films

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Chinese Physics B 2024年第4期33卷 109-120页

作者：韩晓政张纪红刘皓佗吴小虎冷惠文 School of Electromechanical and Automotive Engineering Yantai UniversityYantai 264005China Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of EducationHarbin University of Science and TechnologyHarbin 150080China Thermal Science Research Center Shandong Institute of Advanced TechnologyJinan 250100China

Photon tunneling effects give rise to surface waves,amplifying radiative heat transfer in the near-field regime.Recent research has highlighted that the introduction of nanopores into materials creates additional pathways for heat transfer,leading to a substantial enhancement of near-field radiative heat transfer(NFRHT).Being a direct bandgap semiconductor,GaN has high thermal conductivity and stable resistance at high temperatures,and holds significant potential for applications in optoelectronic devices.Indeed,study of NFRHT between nanoporous GaN films is currently lacking,hence the physical mechanism for adding nanopores to GaN films remains to be discussed in the field of NFRHT.In this work,we delve into the NFRHT of GaN nanoporous films in terms of gap distance,GaN film thickness and the vacuum filling ratio.The results demonstrate a 27.2%increase in heat flux for a 10 nm gap when the nanoporous filling ratio is 0.5.Moreover,the spectral heat flux exhibits redshift with increase in the vacuum filling ratio.To be more precise,the peak of spectral heat flux moves fromω=1.31×10^(14)rad·s^(-1)toω=1.23×10^(14)rad·s^(-1)when the vacuum filling ratio changes from f=0.1 to f=0.5;this can be attributed to the excitation of surface phonon polaritons.The introduction of graphene into these configurations can highly enhance the NFRHT,and the spectral heat flux exhibits a blueshift with increase in the vacuum filling ratio,which can be explained by the excitation of surface plasmon polaritons.These findings offer theoretical insights that can guide the extensive utilization of porous structures in thermal control,management and thermal modulation.

关键词： near-field radiative heat transfer nanoporous GaN film surface phonon polaritons surface plasmon polaritons

The Fabrication and Detection Performance of High Sensitivity Au-Ag Alloy Nanostar/Paper Flexible Surface Enhanced Raman Spectroscopy Sensors

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 436-443页

作者：邓芷盈 WANG Tianyi CAO Shiyi ZHAO Yuan HAN Xiaoyu 张继红谢俊 State Key Laboratory of Silicate Materials for Architectures Department of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Hainan Institute of Wuhan University of Technology Sanya 572000China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Hepu Research Center for Silicate Materials Industry Technology Beihai 536100China

Au-Ag alloy nanostars based flexible paper surface enhanced Raman spectroscopy sensors were fabricated through simple nanostar coating on regular office paper,and the surface enhanced Raman spectroscopy detection performances were investigated using crystal violet dye analyte.Au-Ag nanostars with sharp tips were synthesized via metal ions reduction method.Transmission electron microscope images,X-Ray diffraction pattern and energy dispersive spectroscopy elemental mapping confirmed the nanostar geometry and Au/Ag components of the nanostructure.UV-Vis-NIR absorption spectrum shows wide local surface plasmon resonance induced optical extinction.In addition,finite-difference time-domain simulation shows much stronger electromagnetic field from nanostars than from sphere nanoparticle.The effect of coating layer on Raman signal intensities was discussed,and optimized 5-layer coating with best Raman signal was obtained.The Au-Ag nanostatrs homogeneously distribute on paper fiber surface.The detection limit is 10-10 M,and the relationship between analyte concentrations and Raman signal intensities shows well linear,for potential quantitative analysis.The calculated enhancement factor is 4.795×10^(6).The flexible paper surface enhanced Raman spectroscopy sensors could be applied for trace chemical and biology molecule detection.

关键词： surface-enhanced raman gold-silver alloy nanostars paper-based SERS sensor flexibility

Pricing and Inventory Control Strategy for a Periodic-Review Energy Buy-Back System

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Journal of Systems Science & Complexity 2016年第4期29卷 1018-1033页

作者： zhang jihong CHEN Hongqiao DING Xiaosong LI Xian International Business School Beijing Foreign Studies University Institute of Applied Mathematics Academy of Mathematics and Systems Science Chinese Academy of Sciences DECIDE Research Group Department of Computer and Systems Sciences Stockholm University

Along with the rapid development of economics and enhancement of industrialization, the power demand keeps rising and frequently creates mismatch between demand and supply in electricity.This provides miscellaneous energy buy-back programs with great opportunities. Such programs, when activated, offer certain amount of financial compensations to participants for reducing their energy consumption during peak time. They aim at encouraging participants to shift their electricity usage from peak to non-peak time, and thereby release the demand pressure during peak time. This paper considers a periodic-review joint pricing and inventory decision model under an energy buy-back program over finite planning horizons, in which the compensation levels, setup cost and additive random demand function are incorporated. The objective is to maximize a manufacturer's expected total profit.By using Veinott's conditions, it is shown that the manufacturer's optimal decision is a state dependent(s, S, P) policy under a peak market condition, or partly an(s, S, A, P) policy under the normal market condition.

关键词：添加剂需求功能精力买回来节目连接定价和库存控制 Veinotts 条件

Association of interleukin-6 promoter polymorphism with knee osteoarthritis： a meta-analysis

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Chinese Medical Journal 2014年第13期127卷 2492-2496页

作者： Ai Zhipeng Ning Xianming Shou Tao Tang Wenru Luo Ying zhang jihong Laboratory of Molecular Genetics of Aging & Tumor MedicalFaculty Kunming University of Science & Technology KunmingYunnan 650500 China Orthopedics Department the First People's Hospital of YunnanProvince Kunming Ytmnan 650034 China

Background Osteoarthritis （OA） is the most common form of human polyarthritis.Many genetic factors have been implicated in OA.It was reported that a polymorphism in the gene of interleukin-6 （IL-6） was associated with OA of knee.The aim of this study was to determine whether functional IL-6 promoter-174G/C （rs1800795） polymorphisms confer susceptibility to knee OA.Methods A meta-analysis was conducted on the association between the IL-6 polymorphism and knee OA.Electronic search at PubMed,EMBASE,Weipu database,and Wanfang database was conducted to select studies.Case-control studies containing available genotype frequencies of IL-6-174G/C were chosen,and odds ratio （OR） with 95％ confidence interval （C/） was used to assess the strength of this association.Results A total of seven studies involving 6 464 subjects （knee OA 3 331 and controls 3 133） were considered in this study.The results suggested that the variant genotypes were not associated with knee OA risk in all genetic models （additive model：OR=1.144,95％ CI 0.934-1.402,P=0.194; recessive model：OR=1.113,95％ CI 0.799-1.550,P=0.526;dominant model：OR=1.186,95％ CI 0.918-1.531,P=0.191）.A symmetric funnel plot,the Begg＇s test （P ＞0.05）,suggested that the data lacked publication bias.Conclusions This meta-analysis does not support the idea that rs1800795 genotype is associated with increased risk of knee OA.However,to draw comprehensive and more reliable conclusions,further prospective studies with larger numbers of participants worldwide are needed to examine the association between rs1800795 polymorphism and knee OA.

关键词： interleukin-6 polymorphisms knee osteoarthritis meta-analysis

Organic Carbon in the Surface Sediments from the Intensive Mariculture Zone of Sanggou Bay: Distribution, Seasonal Variations and Sources

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Journal of Ocean University of China 2019年第4期18卷 985-996页

作者： SUI Juanjuan zhang jihong REN S. Jeffrey LIN Fan Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao 266071 China Function Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China Function Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China

Mariculture has rapidly grown worldwide, which might greatly influence the biogeochemical cycle of organic carbon in coastal seas. In this study, several geochemical parameters, including grain size composition, sedimentary total organic carbon (TOC), total nitrogen (TN), stable carbon (δ13C) and nitrogen (δ15N) isotopic compositions, were analyzed for surface sediments collected from different mariculture zones of Sanggou Bay and in different seasons. We investigated the composition and distribution of or- ganic matter in surface sediments and further evaluated the contribution of mariculture activities to TOC sources. The TOC and TN contents (mass percentage) in the bay were in the range of 0.14% to 1.45% and 0.03% to 0.20%, respectively. The spatial distribution indicated that sedimentary TOC and TN contents in shellfish monoculture and shellfish-kelp polyculture zones were higher than in other mariculture zones, which might be related to grain size composition and mariculture organisms. Seasonal variations of TOC contents were observed in different mariculture zones. The TOC/TN atomic ratio (C/N),δ13C and δ15N were in the ranges of 5.97 to 10.97, 21.76‰ to 13.14‰ and 2.13‰ to 8.08‰, respectively, implying that sedimentary organic matter in Sanggou Bay was the mixture of marine phytoplankton, terrestrial and maricultural sources. A simple mixing model based on δ13C was applied and the results indicated that the relative contributions of organic carbon sources in Sanggou Bay followed the order kelp (36.6%) marine phytoplankton (28.7%) shellfish bio-deposition (23.8%) terrestrial input (10.9%). Surface sediments in Sanggou Bay were domi- nated by mariculture-derived organic carbon, which on average accounted for 60.4% of TOC.

关键词： sediment organic carbon sources mariculture Sanggou Bay Iso-Source

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平抑风电出力波动的混合储能功率分配策略

储能科学与技术 2024年第5期13卷 1564-1573页

作者：郭东泽张继红王庆宇张帅内蒙古自治区光热与风能发电重点实验室(内蒙古科技大学自动化与电气工程学院) 内蒙古包头014010

储能技术逐渐成为平抑功率波动、提高电网接纳能力的有效手段,但风电功率波动情况复杂且多变,单一储能并不具备高能量、高功率密度特性。因此为解决风力发电出力平滑问题,针对其随机性间歇性等典型特征,本工作拟采用混合储能技术手段,... 详细信息

储能技术逐渐成为平抑功率波动、提高电网接纳能力的有效手段,但风电功率波动情况复杂且多变,单一储能并不具备高能量、高功率密度特性。因此为解决风力发电出力平滑问题,针对其随机性间歇性等典型特征,本工作拟采用混合储能技术手段,结合锂离子电池和超级电容两种储能的优势,设计一种基于自适应滑动平均滤波-小波包分解双层功率分解分配策略,利用滑动平均滤波算法完成风电功率的自适应分解,获得并网功率和混合储能所需最低功率。考虑到混合储能输出功率依然含有丰富的信息以及小波包分解层数和功率分界点的确定规则,借助小波包算法对平抑的风电功率进行二次分解,并结合变频熵值策略优化混合储能的功率分配,有效改善风电功率的波动情况,实现混合储能功率的最优分解和合理分配。采用国家标准时间尺度波动情况、引入储能前后波动情况、功率幅值、充放电次数等评价指标对不同功率分配方式进行对比分析,结果表明,所提策略能够满足国家标准对风电场出力波动要求,减小对电网的冲击,与传统小波包分解算法对比具有较好自适应性,整体波动情况提升23.69%,锂电池充放电次数降低58.2%。模型评估结果表明,所提方法能够提升混合储能系统整体经济性并延长电池使用寿命。

关键词：混合储能自适应滑动平均算法小波分解变频熵值功率分配

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Effect of Fe_(2)O_(3)on the Structure,Physical Properties and Crystallization of CaO-Al_(2)O_(3)-SiO_(2)Glass

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Journal of Wuhan University of Technology(Materials Science) 2024年第4期39卷 954-961页

作者：张峰 XIONG Dehua 谢俊张继红 HAN Jianjun CHEN Dequan WEN Zhongquan FAN Zhenhua CHEN Lina SUN Tengfei State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Hepu Research Center for Silicate Materials Industry Technology Beihai 536100China Hainan Institute of Wuhan University of Technology Sanya 430079China Shenzhen Research Institute of Wuhan University of Technology Shenzhen 518000China Chongqing Polycomp Inter-national Corporation Chongqing 400400China

The calcium aluminosilicate-based glasses(CaO-Al_(2)O_(3)-SiO_(2),CAS)with different Fe_(2)O_(3)content(0.10wt%,0.50wt%,0.90wt%,and 1.30wt%)were prepared by traditional melt-quenching method.The glass network structure,thermal and mechanical properties,and crystallization behavior changes were investigated by nuclear magnetic resonance spectrometer,Fourier-transform infrared spectro-photometer,X-ray diffractometer,differential scanning calorimetry and field emission scanning electron microscope measurements.The change of Q^(n)in glass structures reveals the glass network connectivity decreases due to the increasing content of Fe_(2)O_(3)addition,resulting in the increasing of non-bridging number in glass structure.The glass densities slightly rise from 2.644 to 2.681 g/cm^(3),while Vickers’s hardness increases at first,from 6.469 to 6.901 GPa,then slightly drops to 6.745 GPa,with Fe_(2)O_(3)content increase.There is almost no thermal expansion coefficient change from different Fe_(2)O_(3)content.The glass transmittance in visible range gradually decreases with higher Fe_(2)O_(3)content,resulting from the strong absorption of Fe^(2+)and Fe^(3+)ions.The calculated activation energy from thermal analysis results first decreases from 282.70 to 231.18 kJ/mol,and then increases to 244.02 kJ/mol,with the Fe_(2)O_(3)content increasing from 0.10wt%to 1.30wt%.Meanwhile,the maximum Avrami constant of 2.33 means the CAS glasses exhibit two-dimensional crystallization.All of the CAS glass-ceramics samples contain main crystal phase of anorthite,the microstructure appears lamellar and columnar crystals.

关键词： calcium aluminosilicate glass network structure physical properties crystallization