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Fabrication and Mechano-sensing Characteristics of Bending Polypyrrole Actuator

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 240-245页

作者： chen Jinyou HU Wei School of Automotive Engineering Hunan Financial&Industrial Vocational-technical CollegeHengyang 421002China College of Mechanical and Electrical Engineering Hunan Agricultural UniversityChangsha 410128China

To prepare a conductive polymer actuator with decent performance,a self-built experimental platform for the preparation of polypyrrole film is *** of the essential goals is to examine the mechanical characteristics of the actuator in the presence of various combinations of process parameters,combined with the orthogonal test method of"four factors and three levels".The bending and sensing characteristics of actuators of various sizes are methodically examined using a self-made bending polypyrrole *** functional relationship between the bending displacement and the output voltage signal is established by studying the characteristics of the actuator sensor subjected to various degrees of *** experimental results reveal that the bending displacement of the actuator tip almost exhibits a linear variation as a function of length and *** the voltage reaches 0.8 V,the bending speed of the actuator tends to be ***,the mechanical properties of the self-assembled polypyrrole actuator are verified by the design and fabrication of the microgripper.

关键词： conductive polymer polypyrrole mechanical characteristics actuators sensing characteristics

Miyaoka-type inequalities for terminal threefolds with nef anti-canonical divisors

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Science China Mathematics 2025年第1期68卷 1-18页

作者： Masataka Iwai chen Jiang Haidong Liu Department of Mathematics Graduate School of ScienceOsaka University Shanghai Center for Mathematical Sciences & School of Mathematical Sciences Fudan University Department of mathematics Sun Yat-sen University

In this paper,we study Miyaoka-type inequalities on Chern classes of terminal projective 3-folds with nef anti-canonical *** X be a terminal projective 3-fold such that-KXis *** show that if c1（X） · c2（X）≠0,then c1（X） · c2（X） ≥ 1/252;if further X is not rationally connected,then c1（X） · c2（X） ≥ 4/5 and this inequality is *** order to prove this,we give a partial classification of such varieties along with many *** also study the nonvanishing of c1（X）dim X-2· c2（X） for terminal weak Fano varieties and prove a Miyaoka-Kawamata-type inequality.

关键词： terminal threefolds Miyaoka-type inequality boundedness

乳腺癌穿刺活检与手术标本中ER、PR、HER2分析

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中国卫生标准管理 2020年第24期11卷 26-29页

作者：陈佳菁林慧陈燕红邱建龙中国人民解放军联勤保障部队第910医院病理科福建泉州362000

目的探讨在乳腺癌空芯针穿刺活检(core needle biopsy,CNB)标本与手术切除标本中应用免疫组化检测雌激素受体(estrogen receptor,ER)、孕激素受体(progesterone receptor,PR)、人类表皮生长因子受体2(human epidermal growth factor receptor 2,HER2)的差异。方法回顾性收集2014年5月—2019年8月接受手术治疗的78例乳腺癌患者临床资料,均为女性患者,所有患者均于术前进行CNB检查,采用免疫组化技术检测CNB标本及手术切除标本ER、PR、HER2表达情况,比较并分析两种检查方式获取的标本免疫组化检测的差异及一致性。结果CNB标本与手术标本检测ER、PR、HER2的表达情况未见显著差异(P>0.05);CNB标本检测ER、PR与手术标本检测结果一致性好,HER2检测结果一致性一般。结论乳腺癌患者CNB标本检测ER、PR、HER2结果可满足分子分型及预后判断的需求,临床可根据CNB检查结果综合考虑治疗方案,有利于肿瘤的精准治疗。

关键词：乳腺癌穿刺活检标本手术切除标本雌激素受体孕激素受体人类表皮生长因子受体2 差异性

Dative B–N bonds weaven toward two-dimensional purely organic materials for single crystals

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Science China Chemistry 2025年第1期68卷 12-14页

作者： Wei-Lei Zhou Siwei Wang Yong chen College of Chemistry and Materials Science Inner Mongolia Key Laboratory of Chemistry for Nature Products and Synthesis for Functional Molecules Innovation Team of Optical Functional Molecular Devices Inner Mongolia Minzu University College of Chemistry Nankai University

Molecular topology is one of the important topics to study and understand the relationship between molecular structure and properties [1]. Particularly, two-dimensional (2D) materials with extremely high surface area and ultra-thin morphology have attracted considerable attention due to their unexpected properties in materials and chemistry [2,3].

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天冬氨酸β-羟化酶mRNA在乳腺癌中的表达及与临床病理、预后的关系分析

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华南国防医学杂志 2021年第5期35卷 344-347页

作者：陈佳菁林慧陈燕红邱建龙联勤保障部队910医院病理科福建泉州362000

目的探讨天冬氨酸β-羟化酶(aspartateβ-hydroxylase,ASPH)mRNA在乳腺癌中的表达及与临床病理、预后的关系。方法选取2015-01/2019-01月收治的156例乳腺癌患者。获取患者乳腺癌手术切除的病理组织标本,采用实时荧光定量逆转录聚合酶链... 详细信息

目的探讨天冬氨酸β-羟化酶(aspartateβ-hydroxylase,ASPH)mRNA在乳腺癌中的表达及与临床病理、预后的关系。方法选取2015-01/2019-01月收治的156例乳腺癌患者。获取患者乳腺癌手术切除的病理组织标本,采用实时荧光定量逆转录聚合酶链反应(real-time reverse transcription quantitative polymerase chain reaction,RT-qPCR)检测癌组织以及癌旁组织的ASPH mRNA表达水平。收集患者临床资料并预后随访。结果乳腺癌组织的ASPH mRNA表达水平高于癌旁组织(P0.05)。ASPH mRNA高表达患者存活57例(73.08%),死亡21例(26.92%),生存期为26~72个月。ASPH mRNA低表达患者存活70例(89.74%),死亡8例(10.26%),生存期为34~72个月,两组生存曲线比较差异有统计学意义(P<0.05)。结论ASPH mRNA与乳腺癌临床分期密切相关,ASPH mRNA高表达导致患者不良预后。

关键词：乳腺癌天冬氨酸β-羟化酶 mRNA 预后

Analysis of Micromechanical Properties at the Interface of Pre-wet SBS Modified Asphalt Mixture Based on Molecular Simulation Technology

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 103-113页

作者： chen Wuxing chen Shuang YU Yan ZHANG Jiangyi XU Haiyang GUO Wei School of Mines China University of Mining and TechnologyXuzhou 221000China College of Construction Engineering Jilin Uni-versityChangchun 130026China

The pre-wetting of aggregate surface is a means to improve the interface performance of SBS modified asphalt and *** effect of pre-wetting technology on the interaction between SBS modified asphalt and aggregate was analyzed by molecular dynamics *** diffusion coefficient and concentration distribution of SBS modified asphalt on aggregate surface are *** simulation results show that the diffusion coefficient of the aggregate surface of SBS modified asphalt is increased by 47.6%and 70.5%respectively after 110#asphalt and 130#asphalt are *** concentration distribution of SBS modified asphalt on the aggregate surface after pre-wetting is more *** to the results of interface energy calculation,the interface energy of SBS modified bitumen and aggregate can be increased by about 5%after *** to the results of molecular dynamics simulation,the pre-wetting technology can effectively improve the interface workability of SBS modified bitumen and aggregate,so as to improve the interface performance.

关键词： pre-wet oil-stone interface interface interaction interface mechanics molecular dynamics simulation

Crustal magma oxidation state and endowments in porphyry copper deposits

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Science China Earth Sciences 2025年第1期68卷 226-236页

作者： Yumin AI Massimo CHIARADIA Chao WU Huayong chen Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of Geochemistry Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Earth Sciences University of Geneva Guangdong Provincial Key Laboratory of Mineral Physics and Materials

Porphyry copper deposits（PCDs） supply the majority of the world's copper（Cu） as well as significant amounts of molybdenum（Mo） and gold（Au）. The formation of these deposits is controlled by a variety of geological factors, among which the magmatic oxidation is one of the focuses of current research. This study investigates the redox characteristics of arc magmas by analyzing the ratio of vanadium（V） to scandium（Sc） and its correlation with the oxygen fugacity （fO2） of magmas from arcs of various crustal thicknesses globally. We compiled an extensive dataset of published V/Sc values and studied the partition coefficients of Vand Sc between minerals and silicate melts across various magmatic environments. The results demonstrate that fractional crystallization of magnetite markedly reduces V/Sc values of the residual melt. Furthermore, magnesium number（Mg#） at the onset of magnetite fractionation is strongly positively correlated with fO2of the equilibrium magma. Based on this,the oxidation of arc magmas from different crustal thicknesses can be evaluated. The result suggests that magmas generated in crusts thicker than 20 km tend to be more oxidized with increasing crust thickness. This trend is attributed to enhanced intracrustal differentiation processes involving garnet and amphibole, particularly in mature island and continental arcs. In contrast,magmas in thinner arc crusts（<20 km）, which are significantly influenced by subducted slab materials, display higher oxidation states than most of their thicker crust counterparts. These findings suggest that both subduction dynamics and crustal thickness play a vital role in determining the oxidation state of arc magmas and, consequently, their capacity to generate PCDs. Highly oxidized, primitive arc magmas are less favorable for PCD formation due to that they tend to experience magnetite fractionation and thus sulfide saturation in the early stage of magma evolution, a process leading to copper depletion. On the contra

关键词： Magma evolution V/Sc systematics Magnetite Oxygen fugacity Porphyry copper deposits

黄龙病病菌侵染对茶枝柑果实类黄酮和挥发性物质的影响

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华中农业大学学报 2020年第1期39卷 24-33页

作者：石莹刘园陈嘉景张海朋曾继吾黄宏建田静彭抒昂徐娟园艺植物生物学教育部重点实验室/华中农业大学园艺林学学院武汉430070 广东省农业科学院果树研究所广州510640 广东省江门市新会区林业科学研究所江门529100

为分析黄龙病(Citrus Huanglongbing,HLB)病菌侵染对茶枝柑(Citrus reticulata ***)果实品质的影响,采用高效液相色谱法和气相色谱-质谱联用技术,分析了花后180 d感病与正常茶枝柑果实中类黄酮物质和挥发性物质的差异。结果表明:茶枝柑... 详细信息

为分析黄龙病(Citrus Huanglongbing,HLB)病菌侵染对茶枝柑(Citrus reticulata ***)果实品质的影响,采用高效液相色谱法和气相色谱-质谱联用技术,分析了花后180 d感病与正常茶枝柑果实中类黄酮物质和挥发性物质的差异。结果表明:茶枝柑感染黄龙病病菌后,果皮中橘皮素等4种聚甲氧基黄酮以及α-蒎烯、辛醛等39种挥发性物质含量显著升高,而氮甲基邻氨基苯甲酸甲酯、胡椒烯等16种挥发性物质显著降低;果肉中川陈皮素等2种聚甲氧基黄酮及D-柠檬烯、β-芳樟醇等27种挥发性物质含量显著降低。因此,黄龙病病菌侵染可能会显著影响茶枝柑果皮和果肉中的次生代谢,进而改变其苦味和香味品质,其改变可能与其感病防御应答机制有关。

关键词：黄龙病(Citrus Huanglongbing,HLB) 茶枝柑(Citrus reticulata cv.chachiensis) 陈皮类黄酮次生代谢挥发性物质果实风味防御应答生物标志物

A Lightweight Multiscale Feature Fusion Network for Solar Cell Defect Detection

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Computers, Materials & Continua 2025年第1期82卷 521-542页

作者： Xiaoyun chen Lanyao Zhang Xiaoling chen Yigang Cen Linna Zhang Fugui Zhang School of Mechanical Engineering Guizhou UniversityGuiyang550025China School of Computer Science and Technology Beijing Jiaotong UniversityBeijing100044China

Solar cell defect detection is crucial for quality inspection in photovoltaic power generation *** the production process,defect samples occur infrequently and exhibit random shapes and sizes,which makes it challenging to collect defective ***,the complex surface background of polysilicon cell wafers complicates the accurate identification and localization of defective *** paper proposes a novel Lightweight Multiscale Feature Fusion network(LMFF)to address these *** network comprises a feature extraction network,a multi-scale feature fusion module(MFF),and a segmentation ***,a feature extraction network is proposed to obtain multi-scale feature outputs,and a multi-scale feature fusion module(MFF)is used to fuse multi-scale feature information *** order to capture finer-grained multi-scale information from the fusion features,we propose a multi-scale attention module(MSA)in the segmentation network to enhance the network’s ability for small target ***,depthwise separable convolutions are introduced to construct depthwise separable residual blocks(DSR)to reduce the model’s parameter ***,to validate the proposed method’s defect segmentation and localization performance,we constructed three solar cell defect detection datasets:SolarCells,SolarCells-S,and *** and SolarCells-S are monocrystalline silicon datasets,and PVEL-S is a polycrystalline silicon *** results show that the IOU of our method on these three datasets can reach 68.5%,51.0%,and 92.7%,respectively,and the F1-Score can reach 81.3%,67.5%,and 96.2%,respectively,which surpasses other commonly usedmethods and verifies the effectiveness of our LMFF network.

关键词： Defect segmentation multi-scale feature fusion multi-scale attention depthwise separable residual block