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Chinese Physics B 2017年第2期26卷 268-273页

作者： Ji-Hou Wang Chang-Ming Chen Yang Zheng Xi-Bin Wang Yun-Ji Yi xiao-qiang sun Fei Wang Da-Ming Zhang State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 China

In this work, long-period waveguide grating-based tunable wavelength filters using organic–inorganic grafting poly（methyl methacrylate）（PMMA） materials are designed and fabricated by metal-cladding directly defined *** thermal stabilities and optical properties of the organic–inorganic grafting PMMA core materials are analyzed. Structures and performance parameters of the waveguide gratings and self-electrode heaters are designed and simulated. The contrast of the filter is about 15 d B and the resonant wavelength can be tuned by different electric powers applied to the metal-cladding self-electrode heaters. The temperature sensitivity is 3.5 nm/℃ and the switching time is about 1 ms. The technique is very suitable for realizing the optoelectronic integrated wavelength-division-multiplexing systems.

关键词： organic–inorganic grafting materials polymer optical waveguide long-period grating filter metalcladding defined technique

Liposome-encapsulated dimethyl curcumin inhibits over-activation of rat lymphocyte to relieve collagen-induced arthritis by regulating intracellular proteolysis and PCNA/p21/caspase-3 pathway

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Life Research 2021年第3期4卷 39-49页

作者： Ya-Ming Guo Zhi-Yuan sun xiao-qiang sun xiaoying Zhou Immunopharmacology Institute School of PharmacyChangzhou UniversityChangzhouJiangsuChina School of Petrochemical Engineering Changzhou UniversityChangzhouJiangsuChina The School of Medicine the University of SouthamptonSouthampton SO166YDUK

Dimethyl curcumin,a synthetic derivative of curcumin,has good anti-cancer,anti-arthritis and anti-inflammatory properties,but underline mechanism was ***,differentiation,proliferation and apoptosis of lymphocytes have important functions during arthritis development and immune ***-activation of lymphocyte causes inflammatory cytokines storm,leading to an immune imbalance and tissue *** aim of this study was to investigate the anti-inflammation mechanism of liposome encapsulated dimethyl curcumin(Lipo-DiMC)on over-activated rat spleen *** this study,Lipo-DiMC was produced to increase the solubility;the primary rat spleen lymphocytes were extracted and the Concanavalin A induced cell activation model was established to study the cellular responses to Lipo-DiMC treatment *** results showed that Lipo-DiMC suppressed Concanavalin A-induced cell proliferation,inhibited cells entering G2/M phase,and reduced the ratio of necrosis/apoptosis by manipulating intracellular p53/p21/PCNA/JNK-1 ***,Lipo-DiMC increased the accumulations of intracellular matrix metalloproteinase-9 and reduced matrix metalloproteinase-9 secretion of rat spleen ***,Lipo-DiMC increased intracellular caspase-3 expression and reduced Cat-C activity in activated rat spleen lymphocytes,involving in intracellular *** findings suggest that dimethyl curcumin effectively alleviates Concanavalin A induced over-activation of rat spleen lymphocytes,thereby inhibiting inflammatory cytokines storm and restoring cell homeostasis.

关键词： Liposomes encapsulated dimethyl curcumin Rheumatoid arthritis Rat spleen lymphocytes Intracellular proteolysis

Compact 2×2 parabolic multimode interference thermo–optic switches based on fluorinated photopolymer

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Chinese Physics B 2019年第4期28卷 216-223页

作者： Ji-Hou Wang Chang-Ming Chen Ke-Wei Hu Ru Cheng Chun-Xue Wang Yun-Ji Yi xiao-qiang sun Fei Wang Zhi-Yong Li Da-Ming Zhang State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University State Key Laboratory of Integrated Optoelectronics Institute of Electronic Semiconductors Chinese Academy of Sciences

In this work, a dual-side parabolic structural(DSPS) multimode interference(MMI) thermo–optic(TO) waveguide switch is designed and fabricated by using novel low-loss fluorinated photopolymer materials. Comparing with the traditional dual-side linear structural(DSLS) MMI device, the effective length of the MMI coupling region proposed can be effectively reduced by 40%. The thermal stability of the waveguide material is analyzed, and the optical characteristics of the switching chip are simulated. The actual performances of the entire MMI switch are measured with an insertion loss of7 dB, switching power of 15 m W and an extinction ratio of 28 dB. In contrast to the traditional MMI optical switch, the new type of parabolic structural MMI TO waveguide switch exhibits lower power consumption and larger extinction ratio. The compact fluorinated polymer MMI TO switches are suitable well for realizing miniaturization, high-properties, and lower cost of photonic integrated circuits.

关键词： fluorinated photopolymer materials parabolic structural MMI thermo–optic waveguide switches

Electrocatalytic nitrite reduction to ammonia on isolated bismuth alloyed ruthenium

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Journal of Energy Chemistry 2025年第1期100卷 369-376页

作者： Shiyao Shang Fuzhou Wang Zeyi sun Chaofan qiang Ke Chu School of Materials Science and Engineering Lanzhou Jiaotong University

Electrochemical reduction of NO2-to NH3（NO2-RR） is recognized as an appealing approach for achieving renewable NH3synthesis and waste ***,we report isolated Bi alloyed Ru （Bi1Ru） as an efficient NO2-RR *** calculations and in situ electrochemical measurements reveal the creation of Bi1-Ru dual sites which can remarkably promote NO2-activation and suppress proton adsorption,while accelerating the NO2-RR protonation energetics to render a high NO2--to-NH3conversion ***,Bi1Ru assembled in a flow cell delivers an NH3yield rate of 1901.4μmol h-1cm-2and an NH3-Faradaic efficiency of 94.3%at an industrial-level current density of 324.3 mA *** study offers new perspectives for designing and constructing p-block single-atom alloys as robust and high-current-density NO2-RR catalysts toward the ammonia electrosynthesis.

关键词： Ammonia

混合综采工作面覆岩运移规律及空间结构特征分析

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煤炭学报 2017年第2期42卷 388-396页

作者：殷伟张强韩晓乐孙强巨峰中国矿业大学煤炭资源与安全开采国家重点实验室江苏徐州221116 中国矿业大学深部岩土力学与地下工程国家重点实验室江苏徐州221116

基于平煤十二矿深部开采面临的排矸量大、辅助运输困难、矿区环境污染以及常规充填面产能不足工程背景,创新了矸石充填与垮落法混合综采技术并阐述了其技术内涵。采用理论分析、物理相似模拟和现场实测方法系统地研究了混合综采工作面... 详细信息

基于平煤十二矿深部开采面临的排矸量大、辅助运输困难、矿区环境污染以及常规充填面产能不足工程背景,创新了矸石充填与垮落法混合综采技术并阐述了其技术内涵。采用理论分析、物理相似模拟和现场实测方法系统地研究了混合综采工作面覆岩运移规律和空间结构特征。通过理论分析得到了不同充实率状态下混合综采工作面覆岩空间结构特征;物理相似模拟结果表明,混合综采工作面充填段基本顶仅发生弯曲下沉,而垮落段直接顶垮落、基本顶断裂,垮落段基本顶平均下沉量是充填段的4.2倍,覆岩空间结构表现出明显的非对称特征。矿压实测数据显示,充填段采场无明显的来压现象,垮落段来压现象显著,初次来压步距约30 m,周期来压步距约22 m,动载系数达1.7左右;岩层钻孔窥视结果观察到充填段顶板完整,覆岩空间结构呈现"两带"发育特征;垮落段覆岩结构呈"三带"发育特征,混合综采工作面覆岩非对称性空间结构特征显著。

关键词：混合综采矸石充填充实率覆岩空间结构

Effects of the extrusion parameters on microstructure,texture and room temperature mechanical properties of extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang Lei xiao Zhiyong Kan Jing Guo qiang Li Wanqi Jie State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China College of Chemistry and Environmental Science Qujing Normal UniversityQujing 655011China

Microstructure,texture,and mechanical properties of the extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy were investigated at different extrusion temperatures(260 and 320℃),extrusion ratios(10:1,15:1,and 30:1),and extrusion speeds(3 and 6 mm/s).The experimental results exhibited that the grain sizes after extrusion were much finer than that of the homogenized alloy,and the second phase showed streamline distribution along the extrusion direction(ED).With extrusion temperature increased from 260 to 320℃,the microstructure,texture,and mechanical properties of alloys changed *** dynamic recrystallization(DRX)degree and grain sizes enhanced as the extrusion ratio increased from 10:1 to 30:1,and the strength gradually decreased but elongation(EL)*** the extrusion speed increased from 3 to 6 mm/s,the grain sizes and DRX degree increased significantly,and the samples presented the typical-rare-earth(RE)*** alloy extruded at 260℃ with extrusion ratio of 10:1 and extrusion speed of 3 mm/s showed the tensile yield strength(TYS)of 213 MPa and EL of 30.6%.After quantitatively analyzing the contribution of strengthening mechanisms,it was found that the grain boundary strengthening and dislocation strengthening played major roles among strengthening *** results provide some guidelines for enlarging the industrial application of extruded Mg-RE alloy.

关键词： Mg-rare earth alloys extrusion temperature extrusion ratio extrusion speed strengthening mechanisms

All polymer asymmetric Mach-Zehnder interferometer waveguide sensor by imprinting bonding and laser polishing

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Chinese Physics B 2017年第12期26卷 332-338页

作者：刘豫孙月衣云骥田亮曹悦陈长鸣孙小强张大明 State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 China

We present an all polymer asymmetric Mach-Zehnder interferometer （AMZI） waveguide sensor based on imprinting bonding and laser polishing method. The fabrication methods are compatible with high accuracy waveguide sensing structure. The rectangle waveguide structure of this sensor has three sensing surfaces contacting the test media, and its sensing accuracy can be increased 5 times compared with that of one surface sensing structure. An AMZI device structure is designed. The single mode condition, the length of the sensing arm, and the length deviation between the sensing arm and the reference arm are optimized. The length deviation is optimized to be 19.8 μm in a refractive index range between 1.470 and 1.545. We fabricate the AMZI waveguide by lithography and wet etching method. The imprinting bonding and laser polishing method is proposed and investigated. The insertion loss is between-80.36 dB and-10.63 dB. The average and linear sensitivity are 768.1 dB/RIU and 548.95 dB/RIU, respectively. And the average and linear detection resolution of the sensor are 1.3010-6 RIU （RIU：refractive index unit） and 1.8210-5 RIU, respectively. This sensor has a fast and cost-effective fabrication process which can be used in the cases of requiring portability and disposability.

关键词： integrated optics devices polymer waveguides sensors microstructure fabrication

PS-CoT-Adapter: adapting plan-and-solve chain-of-thought for ScienceQA

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Science China(Information Sciences) 2025年第1期68卷 392-393页

作者： Qun LI Haixin sun Fu xiao Yiming WANG Xinping GAO Bir BHANU School of Computer Science Nanjing University of Posts and Telecommunications Purple Mountain Laboratories Department of Electrical and Computer Engineering University of California at Riverside

Large language models (LLMs) have recently shown remarkable performance in a variety of natural language processing (NLP) *** further explore LLMs'reasoning abilities in solving complex problems,recent research [1-3]has investigated chain-of-thought (CoT) reasoning in complex multimodal scenarios,such as science question answering (ScienceQA) tasks [4],by fine-tuning multimodal models through human-annotated CoT ***,collected CoT rationales often miss the necessary rea-soning steps and specific expertise.

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De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2025年第1期68卷 174-180页

作者： Fan-xiao Meng Xing-Yu Wang Ka Lu Ju-Song Yang Fu-Min Zhang Ai-Jun Ma Bao Du Yong-qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi University

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

关键词： benzofuran atropisomers novel de novo synthetic strategy asymmetric formal [3 + 2] cycladdition Cu/SPDO complex DFT calculations

城市机构养老服务设施规划配置布局研究--以徐州市主城区为例

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现代城市研究 2017年第2期32卷 27-32页

作者：季翔肖炳科孙强中国矿业大学建筑与设计学院中国矿业大学江苏建筑节能与建造技术协同创新中心徐州市规划设计院

随着社会人口的老龄化,城市急剧增长的社会养老需求与养老事业发展滞后的矛盾日益突出,城市机构养老设施作为社会养老的补充力量,应充分发挥其灵活性,有序协调城市养老资源。本文以徐州市主城区为例,充分研究分析当下机构养老设施现状,... 详细信息

随着社会人口的老龄化,城市急剧增长的社会养老需求与养老事业发展滞后的矛盾日益突出,城市机构养老设施作为社会养老的补充力量,应充分发挥其灵活性,有序协调城市养老资源。本文以徐州市主城区为例,充分研究分析当下机构养老设施现状,运用差异化分析进行养老资源的配置,从宏观、微观和政策引导方面提出了规划应对,推动城市机构养老设施的有序建设。

关键词：规构养老设施空间布局差异化配置