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高疏水性硅橡胶防污闪涂料的制备及其性能研究

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有机硅材料 2012年第4期26卷 237-241页

作者：赵悦菊王国刚夏兵王建辉张金玲国网电力科学研究院北京国电富通科技发展有限责任公司北京100070

以端羟基聚二甲基硅氧烷、不同粒径的改性二氧化硅粒子、硅烷偶联剂及助剂为原料,采用有机-无机杂化纳米技术,制得具有高疏水性能的室温硫化(RTV)硅橡胶防污闪涂料。采用扫描电镜表征了涂层的表面形貌,用静态接触角测试仪测定了二氧化... 详细信息

以端羟基聚二甲基硅氧烷、不同粒径的改性二氧化硅粒子、硅烷偶联剂及助剂为原料,采用有机-无机杂化纳米技术,制得具有高疏水性能的室温硫化(RTV)硅橡胶防污闪涂料。采用扫描电镜表征了涂层的表面形貌,用静态接触角测试仪测定了二氧化硅用量对涂层的憎水性及憎水迁移性变化。结果表明,固定纳米级二氧化硅的用量,当微米级二氧化硅用量为10份时,涂层表面形成一定的微米二级粗糙结构,涂层表面接触角为131.50,具有较高的疏水性能;同时,涂层也具有优良的憎水迁移性。此时,硅橡胶的拉伸强度为2.08 MPa,伸长率581%,撕裂强度5.65 kN/m,体积电阻率1.38×1015Ω·m,污秽湿工频闪络电压3 kV,阻燃性FV-0级。

关键词：高疏水性硅橡胶污秽闪络表面微-纳结构

基于改进DeblurGAN-v2的运动模糊农作物害虫图像复原方法

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光电子·激光 2025年第1期36卷 46-52页

作者：赵辉黄镖王红君岳有军天津理工大学电气工程与自动化学院天津市复杂系统控制理论与应用重点实验室

为对巡检机器人在巡检过程中产生的运动模糊图像进行高效精准识别，提出了一种基于改进DeblurGAN-v2的运动模糊农作物害虫图像复原方法。为有效提取图像重要特征，该方法将通道注意力(channel attention, CA)机制集成到DeblurGAN-v2主... 详细信息

为对巡检机器人在巡检过程中产生的运动模糊图像进行高效精准识别，提出了一种基于改进DeblurGAN-v2的运动模糊农作物害虫图像复原方法。为有效提取图像重要特征，该方法将通道注意力(channel attention, CA)机制集成到DeblurGAN-v2主干网格中，使模型更加关注细节特征，提高对运动模糊图像的复原能力；此外，在原模型特征提取网络顶层引入空间金字塔池化(spatial pryamid pooling, SPP)缓解图像多尺度变化造成对图像复原的负面影响，提高模型对图像复原的性能。基于实际农田环境建立的数据集所做的实验结果表明，改进后算法的PSNR、SSIM指标分别为26.281 8 dB、0.947 3,较原模型提升了8、7.2个百分点。与其他主流模型的对比实验结果表明，本文方法对模糊图像的实际复原效果更优，对解决运动模糊农作物害虫的图像复原问题具有实际应用价值。

关键词：运动模糊深度学习图像复原 DeblurGAN-v2 通道注意力(CA)机制空间金字塔池化(SPP)模块

Universal method for designing periodic orbits by homotopy classes in the elliptic restricted three-body problem

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Astrodynamics 2024年第1期8卷 175-188页

作者： yue Zheng Min zhao School of Electronic Engineering Xi’an Aeronautical InstituteXi’an710077China School of Aircraft Engineering Xi’an Aeronautical InstituteXi’an710077China School of Astronautics Northwestern Polytechnical UniversityXi’an710072China

The current methods for designing periodic orbits in the elliptic restricted three-body problem(ERTBP)have the disadvantages of targeting limited orbits and ergodic searches and considering only symmetric orbits.A universal method for designing periodic orbits is proposed in this ***,the homotopy classes of orbits are structured based on their topological ***,a dynamic model based on homotopy classes,ranging from the circular restricted three-body problem(CRTBP)to the ERTBP,can be built using the homotopy ***,a multi-and a single-period orbit were selected based on the resonance ***,the corresponding orbit in the ERTBP was computed by modifying the initial condition of the orbit in the *** method,without an ergodic search,can extend to any orbit,including an asymmetric orbit in the CRTBP,to the ERTBP model,and the two orbits are of the same homotopy *** of the Earth–Moon ERTBP are presented to verify the efficiency of this method.

关键词： periodic orbit elliptic restricted three-body problem(ERTBP) topology homotopy circular restricted three-body problem(CRTBP)

基于二氧化铈/羟基氧化铁纳米酶的比色分析法快速检测泡椒凤爪中过氧化氢

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食品科学 2025年第1期46卷 166-175页

作者：岳晓月闫曙亮符龙赵电波郑州轻工业大学食品与生物工程学院河南郑州450001 冷链食品加工与安全控制教育部重点实验室河南郑州450001 河南省冷链食品质量安全控制重点实验室河南郑州450001

采用水热法合成二氧化铈(CeO_(2))修饰的羟基氧化铁(FeOOH),得到纳米材料CeO_(2)/FeOOH。CeO_(2)/FeOOH具有类过氧化物酶活性,可以催化过氧化氢(H_(2)O_(2))分解产生羟自由基(·OH)和超氧阴离子自由基(O2-·),将3,3’,5,5’-四甲基联苯... 详细信息

采用水热法合成二氧化铈(CeO_(2))修饰的羟基氧化铁(FeOOH),得到纳米材料CeO_(2)/FeOOH。CeO_(2)/FeOOH具有类过氧化物酶活性,可以催化过氧化氢(H_(2)O_(2))分解产生羟自由基(·OH)和超氧阴离子自由基(O2-·),将3,3’,5,5’-四甲基联苯胺(3,3’,5,5’-tetramethylbenzidine,TMB)氧化为蓝色的氧化TMB(oxidized TMB,ox-TMB)。基于此,构建基于CeO_(2)/FeOOH纳米酶的H_(2)O_(2)比色传感器。结果表明:该比色传感器对H_(2)O_(2)显示出高灵敏度响应,检测限为3.92μmol/L,检测范围为10~1000μmol/L。此外,该传感器可用于泡椒凤爪中H_(2)O_(2)的快速检测,其中,H_(2)O_(2)加标回收率为90.59%~93.42%,相对标准偏差≤4.25%,具有灵敏、准确、快速和简便等优势。

关键词：泡椒凤爪过氧化氢快速检测比色法纳米酶

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超声造影在盆腔包块良恶性诊断中的价值

昆明医科大学学报 2016年第8期37卷 101-105页

作者：吴珏马永红朱珉李蓉赵晓悦马菊香俞青昆明医科大学第一附属医院云南昆明650032

目的探讨超声造影在盆腔包块良恶性的鉴别诊断的价值.方法选取2014年10月至2016年1月在昆明医科大学第一附属医院门诊和住院部就诊,行经阴道或经腹常规超声发现盆腔包块的患者62例,共64个包块,常规超声提示为盆腔囊性、囊实混合性、实... 详细信息

目的探讨超声造影在盆腔包块良恶性的鉴别诊断的价值.方法选取2014年10月至2016年1月在昆明医科大学第一附属医院门诊和住院部就诊,行经阴道或经腹常规超声发现盆腔包块的患者62例,共64个包块,常规超声提示为盆腔囊性、囊实混合性、实性包块,对64个盆腔包块行超声造影检查.观察盆腔包块造影剂灌注过程,分析灌注模式和灌注强度及时间强度曲线,其诊断结果与病理结果、长期随访结果对照,分为良性组和恶性组,分析和比较2组时间强度曲线形态及各造影参数.结果 64个盆腔包块,其中62个经穿刺或手术病理证实、2个经长期随访证实:良性组43个,恶性组21个.良性组包块造影剂多由周边向中心灌注,均匀性等增强,血管走形规则;恶性组多由中心向周边灌注,快速不均匀性高增强,血管走形迂曲.时间强度曲线形态良性组多呈"缓升缓降型",恶性组多呈"速升速降型".恶性组上升时间(RS)(7.70±2.56)s,较良性组(11.40±6.77)s早(P0.05),超声造影诊断盆腔包块灵敏度95.2%,特异度93.0%,阳性预测值86.9%,阴性预测值97.5%.结论超声造影能很好的显示包块的血流灌注情况及血管分布特征,分析其包块造影剂增强模式、时间强度曲线形态及各个参数指标,能有效提高盆腔包块良恶性诊断及鉴别诊断的能力.

关键词：盆腔包块超声造影良恶性

Model-based investigation on building thermal mass utilization and flexibility enhancement of air conditioning loads

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Building Simulation 2024年第8期17卷 1289-1308页

作者： yue Sun Tianyi zhao Shan Lyu Institute of Building Energy School of Infrastructure EngineeringDalian University of TechnologyDalian116024China School of Civil Engineering Chongqing UniversityChongqing 400045China

Building air conditioning systems(ACs)can contribute to the stable operation of power grids by participating in peak load shaving programs,but the participants need a fast and accurate zone temperature prediction model,e.g.,the detailed room thermal-resistance(RC)model,to improve peak shaving effect and avoid obvious thermal ***,when applying the detailed room RC model to multi-zone buildings,conventional studies mostly consider the heat transfer among neighboring rooms,which contributes little to the prediction accuracy improvement,but leads to complicated model structure and heavy ***,a distributed RC model is developed for multi-zone buildings in this *** to conventional models,the proposed model considers the total heat transfer between the building and the air,and ignores the heat transfer among indoor air in neighboring rooms through internal walls with heavy thermal mass,thereby having comparable temperature prediction accuracy,simpler structure,and stronger *** on the model,the effectiveness of passive pre-cooling strategies in reducing the air conditioning loads during peak periods is *** indicate that the thermal insulation performance of opaque building envelope is quite important to the flexibility enhancement of air conditioning *** an uninsulated building envelope,passive pre-cooling is useless for the peak load *** comparison,well insulated opaque building envelope enables the building thermal mass to be utilized through passive pre-cooling,which leads to the air conditioning loads during peak periods being further reduced by about 12%.

关键词： RC model passive pre-cooling internal thermal mass building energy flexibility

Polarization visualization for low-irradiance regions by perceptually uniform color space

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Defence Technology（防务技术） 2021年第2期17卷 505-511页

作者： Feng zhao yue Dong Jian-lei Zhang Xi’an University of Posts and Telecommunications School of Electronic EngineeringXi’an710121China

Currently,polarization visualization strategies are accomplished by mapping polarization information into a perceptually uniform color appearance model ***,the deviation of the CAM02-UCS space from the lightness prediction results in an inaccurate match between the polarization information and the perceptual *** this paper,we propose a novel polarization visualization strategy based on the perceptual uniform space *** polarization visualization be completed by placing the polarization information into the lightness Jz,colorfulness Cz and hue angle hz channels of the Jzazbz *** experimental results show that the proposed method can significantly improve the lightness of the low irradiance and high polarization region,hence more polarization information can be sensed by human visual system.

关键词： Polarization visualization Perceptually uniform space Lightness prediction Low irradiance

All-Fiber Gain-Switched Thulium-Doped Fiber Laser Pumped by 1.558 μm Laser

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Chinese Physics Letters 2012年第6期29卷 129-132页

作者： ZHOU Ren-Lai zhao Jie YUANG-Chi CHEN zhao-Yu ju You-Lun WANG yue-Zhu National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150080

We present an all-fiber gain-switched thulium (Tm) doped fiber laser operating in the eye-safe region at *** fibre Bragg gratings (FBGs) inscribed by phase mask technology are used as cavity mirrors,and the transmission spectra of FBGs are also *** output cbaracteristics are studied at pulse repetition frequene cies of 10,20 and 30kHz,and the maximum output powers of 28.9,67.0 and 71.0mW are achieved under incident pump powers of 122,247and *** narrowest pulse width of29ns and shortest pulse built-time of 140 ns are obtained at 10 *** relation between pulse built-time and cavity length are discussed.

关键词： fiber pulse pump

Large-scale Growth of Copper Oxide Nanowires on Various Copper Substrates

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Journal of Materials Science & Technology 2013年第12期29卷 1156-1160页

作者： Yumei yue Mingji Chen Yang ju Shuai Wang Faculty of Aerospace Engineering Shenyang Aerospace University Department of Mechanical Science and Engineering Nagoya University Dalian Dv Valve Co.Ltd

Large-scale growth of copper oxide nanowires was realized on surfaces of various copper-containing substrates, including copper grids, high-purity copper foils, and small copper blocks, by the stress-induced method. A relatively low heating temperature of 340 ~C was demonstrated to give rise to dense nanowire growth with fine crystal structures and high aspect ratio of approximately 300. Gradual cooling process, which is positive for the growth of nanowires on multi-layer substrates, is shown to have no effect on the nanowire growth on other pure copper substrates. Diameter of as-obtained nanowires is mainly dependent on the heating temperature. Moreover, the nanowires growing on copper grids are much longer than those growing on two other substrates.

关键词： Copper oxide nanowires Stress-induced method Gradual cooling process Copper-containing substrate