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Research on the Design of Innovative Play Blind Box Based on AR Digital Technology Empowering Traditional Intangible Cultural Heritage

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Journal of Electronic Research and Application 2024年第3期8卷 53-59页

作者： Zhilin Gu junhong liu Beijing Institute of Technology Zhuhai 519088China

The development of science and technology,especially the rise of augmented reality(AR)technology provides a new way for the inheritance and innovation of traditional intangible cultural *** on the design and research of the tide play blind box of AR digital technology empowering traditional intangible cultural heritage,this paper discusses the application and feasibility of AR technology in the traditional intangible cultural heritage,analyzes the strategy of implementing AR technology empowering intangible cultural heritage,and puts forward corresponding countermeasures for the challenges that may be faced,aiming at providing new ideas and methods for traditional intangible cultural heritage and modern science and technology.

关键词： Augmented reality technology Intangible cultural heritage Inheritance Innovation

数据驱动在电力储能设备声纹识别和监测诊断中的应用

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储能科学与技术 2024年第8期13卷 2835-2837页

作者：刘俊宏国网西藏电力有限公司西藏拉萨850000

随着电力储能技术的快速发展,对储能设备的运行安全与性能稳定性要求日益提高。声纹识别作为一种非接触式的监测手段,在电力储能设备的故障诊断中展现出巨大潜力。本文深入探讨了数据驱动在电力储能设备声纹识别和监测诊断中的应用研究... 详细信息

随着电力储能技术的快速发展,对储能设备的运行安全与性能稳定性要求日益提高。声纹识别作为一种非接触式的监测手段,在电力储能设备的故障诊断中展现出巨大潜力。本文深入探讨了数据驱动在电力储能设备声纹识别和监测诊断中的应用研究。首先分析了数据驱动技术的研究进展以及市场常见技术类别;然后基于数据驱动,分析了储能设备声纹识别监测技术的发展情况。包括电力储能设备声纹样本采集和电力储能设备声纹信号的处理技术,最后依靠处理数据即可建立识别诊断模型,实现故障诊断。

关键词：故障诊断储能设备数据驱动

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水性丙烯酸树脂对PBAT/淀粉复合材料性能影响

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化工进展 2024年第6期43卷 3268-3276页

作者：屈超刘俊红贾彬黄勇四川化工职业技术学院应用化工学院四川泸州646005 宜宾学院材料与化学工程学部四川宜宾644000

研究了四种水性丙烯酸树脂对聚对苯二甲酸-己二酸丁二酯(PBAT)/淀粉复合材料性能的影响,选择最佳水性丙烯酸树脂进一步研究其用量对复合材料性能的影响。通过万能拉伸测试仪、熔体流动速率仪、接触角测试仪、差式扫描量热仪、热失重分... 详细信息

研究了四种水性丙烯酸树脂对聚对苯二甲酸-己二酸丁二酯(PBAT)/淀粉复合材料性能的影响,选择最佳水性丙烯酸树脂进一步研究其用量对复合材料性能的影响。通过万能拉伸测试仪、熔体流动速率仪、接触角测试仪、差式扫描量热仪、热失重分析仪对复合材料力学性能、熔体流动性能、亲水性能、热性能进行了分析;采用红外光谱仪、偏光显微镜对PBAT/淀粉复合材的分子结构与微观组织形貌进行了表征。研究结果表明:玻璃化温度较低的水性丙烯酸树脂对淀粉的改性效果更佳;当水性丙烯酸树脂7168(B7168)用量为25.2g时,复合材料拉伸强度和断裂伸长率有最佳值,较空白样提高10.8%和38.5%;随B7168的增加,复合材料熔体流动速率先减小后趋于平缓,亲水性能增加,对PBAT的结晶和熔融温度影响不明显,对球晶形貌影响不大,但使球晶平均直径略有减小,3000~3600 cm^(-1)的红外响应峰强度有增加的趋势,波峰略向低波数方向移动;热失重显示B7168的加入,使体系热分解起始温度提前,700℃残余量增加。

关键词：聚对苯二甲酸-己二酸丁二酯淀粉水性丙烯酸树脂可降解塑料

温度和共混浓度对激基复合物与电致激基复合物共存体系的磁效率调控

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科学通报 2024年第4期69卷 596-605页

作者：吴雨廷朱洪强赵茜刘俊宏彭腾汪波熊祖洪西南大学物理科学与技术学院重庆400715 重庆师范大学物理与电子工程学院重庆401331

激基复合物(exciplex)和电致激基复合物(electroplex)经常同时产生于体异质结的有机发光二极管(organic light emitting diodes,OLEDs),有报道称利用这两种发射态共存的器件实现了高效率发光.器件高效率的物理机制与共存体系中自旋对态(... 详细信息

激基复合物(exciplex)和电致激基复合物(electroplex)经常同时产生于体异质结的有机发光二极管(organic light emitting diodes,OLEDs),有报道称利用这两种发射态共存的器件实现了高效率发光.器件高效率的物理机制与共存体系中自旋对态(spin-pair states)的微观过程有关,相关微观过程还有待深入研究.本文以特征的有机磁场效应(organic magnetic field effects)作为主要探测工具,通过改变器件的工作温度和给体与受体的共混比例来研究这种双发射态共存体系中自旋对态的演变过程.实验结果表明:降低发光器件的环境温度不仅会减弱从高能激基复合物到低能电致激基复合物的Dexter能量传递过程,而且因器件偏压增高还会引起电致激基复合物电荷转移(charge-transfer,CT)态的场致解离,使其数量较少,导致其CT态的反向系间窜越(reverse intersystem crossing,RISC)过程减弱.另外,增加发光层中给体的浓度会引起电荷注入更不平衡,增强过剩的空穴载流子与电致激基复合物的解离反应,这也会减弱电致激基复合物CT态的RISC过程.因此,温度降低或给体含量增多,器件的磁效率(magneto-efficiency,Mη)从原来受RISC过程主导的负磁效应转化为受系间窜越(intersystem crossing,ISC)过程主导的正磁效应.本工作有利于深入理解激基复合物和电致激基复合物共存体系中自旋对态的物理微观机制.

关键词：有机发光二极管磁效率反向系间窜越激基复合物电致激基复合物

Crystallization Behavior of Poly(Tetramethylene Oxide) Influenced by the Crystallization Condition of Poly(Butylene Succinate) in Their Copolymers

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Journal of Wuhan University of Technology(Materials Science) 2019年第2期34卷 496-506页

作者：黄勇 liu junhong ZHANG Aimin 周涛 College of Chemical Engineering Sichuan University of Science & Engineering Department of Chemical Engineering Sichuan Vocational College of Chemical Technology State Key Laboratory of Polymer Materials Engineering of China Polymer Research Institute Sichuan University

The effect of crystallization conditions of poly(butylene succinate)(PBS) component on the crystallization of poly(tetramethylene oxide)(PTMO) component in their segment block copolymer, with a higher PTMO content(PTMO mass fraction is 67%), was investigated by DSC and temperature-dependent FTIR. It is found that the isothermal crystallization time(tIC) of PBS has an effect on the crystallization behavior of PTMO component. Perturbation correlation move-window two-dimensional(PCMW2 D) correlation analysis and generalized 2 D correlation analysis(2 DIR) were performed to explore the origin of this phenomenon. The PCMW2 D and 2 DIR results show that the correlation intensity peak observed at around 20 ℃ for PTMO is due to the PTMO chains movements forced by the PBS chains folded movements. If tIC of PBS at temperature of 20 ℃ is prolonged, more PTMO components are incorporated in the region between PBS lamellae and the peak at-7.6 ℃(belonging to less-constricted PTMO chains) changes smaller and even disappears, while the peak at-16.3 ℃ belonging to more-constricted PTMO chains gets bigger. A crystallization model was also established in this study. The results of tensile testing showed that tensile strength slightly increased and elongation at break decreased with increasing heat treatment time at 40 ℃.

关键词： PBS/PTMO segment block copolymer crystallization behavior perturbation correlation move-window two-dimensional correlation analysis

Composition Dependence of the Thermal Behavior,Morphology and Properties of Biodegradable PBS/PTMO Segment Block Copolymer

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Journal of Wuhan University of Technology(Materials Science) 2016年第1期31卷 219-226页

作者：黄勇 liu junhong 周涛张爱民 State Key Laboratory of Polymer Materials Engineering of China Polymer Research Institute Sichuan University Chengdu 610065 China Sichuan Vocational College of Chemical Technology Luzhou 646005 China

A series of aliphatic biodegradable poly（ether-ester）s based on poly（butylene succinate）（PBS）as hard segment and poly（tetramethylene oxide）（PTMO,M_n=1 000 g/mol） as soft segment were *** composition dependence of thermal behavior,morphology and mechanical properties was investigated by differential scanning calorimetry（DSC）,atomic force microscopy（AFM）,and tensile *** crystallization temperature（T_c） and melting temperature（T_m） of the PBS block within poly（ether-ester）s decrease steadily at first,but decrease sharply with PTMO content above 50 wt%.Two crystallization peaks were detected for PTMO in PBSPTMO60 sample,suggesting the occurrence of fractionated *** crystallization enthalpies（△H_c） and melting enthalpies（△H_m） of PBS block decrease at first,then increase as PTMO content increases *** has demonstrated that phase-separated morphology transforms from a phase of continuous hard matrix to one of continuous soft matrix containing isolated hard domain as PTMO content is ***,the results of tensile testing show that the poly（ether-ester）s present the behavior of plastics when PTMO content is below 40 wt%,and of thermoplastic elastomers with PTMO content above 50 wt%.By varying the composition of copolymer,the aliphatic poly（ether-ester）s plastics,or especially biodegradable aliphatic poly（ether-ester）s thermoplastic elastomers can be obtained.

关键词： poly(ether-ester)s poly(butylene succinate) poly(tetramethylene oxide) thermoplastic elastomers biodegradable polymer

胰高血糖素样肽-1受体激动剂对2型糖尿病患者肾保护作用的有效性和安全性评价

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中国现代应用药学 2024年第6期41卷 823-833页

作者：刘骏泓高雅莉梁翠绿陈琪莹陈明珠张吟福建医科大学附属第二医院药学部福建泉州362000 福建医科大学药学院福州350000 泉州医学高等专科学校福建泉州362000

目的系统评价胰高血糖素样肽-1受体激动剂(glucagon-like peptide-1 receptor agonists,GLP-1RA)对2型糖尿病(type 2 diabetes mellitus,T2DM)患者的肾保护作用的有效性和安全性,为临床提供循证依据。方法计算机检索PubMed、Embase、The Cochrane Library、Clinical ***、CNKI、WanFang Data和VIP数据库,并手工检索追溯纳入文献的参考文献,收集单用GLP-1RA或者GLP-1RA联合其他常规药物(试验组),对比不加GLP-1RA或安慰剂的常规方法(对照组)治疗T2DM的随机对照试验(randomized controlled trials,RCTs),检索时限为建库至2022年1月30日。运用RevMan 5.4统计软件对纳入的资料进行meta分析。结果共纳入7项研究,其中试验组7 985例,对照组6 633例。Meta分析结果显示,试验组显著降低肾脏复合终点事件发生率[Z=2.17,P=0.03,RR=0.79,95%CI(0.64,0.98)]、尿白蛋白/肌酐比[Z=11.66,P<0.000 01,MD=–23.74,95%CI(–27.73,–19.74)]、新发大量蛋白尿发生率[Z=5.79,P<0.000 01,MD=0.76,95%CI(0.69,0.83)]、糖化血红蛋白[Z=12.76,P<0.000 01,MD=–0.94,95%CI(–1.09,–0.80)]和估算肾小球滤过率[P=0.000 7,Z=3.39,MD=–7.37,95%CI(–11.63,–3.10)],差异均有统计学意义;有1项研究表明试验组显著降低24 h尿白蛋白排泄率;但在2组间急性肾衰竭发生率[Z=0.63,P=0.53,MD=1.13,95%CI(0.78,1.63)]方面无统计学差异。安全性方面,除低血糖发生率没有统计学差异外,试验组在腹泻、恶心、呕吐以及食欲下降的不良反应发生率均高于对照组,差异具有统计学意义。结论现有的研究证据表明,GLP-1RA常见的不良反应为胃肠道反应且可耐受。与安慰剂或不使用GLP-1RA的常规治疗相比,GLP-1RA对T2DM患者可能具有一定的肾保护作用,该结论尚需大量的RCTs进一步验证。

关键词：胰高血糖素样肽-1受体激动剂 2型糖尿病肾保护 meta分析安全性评价随机对照试验

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长玻纤/高密度聚乙烯复合材料的制备

化工技术与开发 2024年第6期53卷 27-30,34页

作者：屈超黄政刘俊红四川化工职业技术学院四川泸州646300

以N406作为偶联剂,向双螺杆挤出机中连续加入玻璃纤维(玻纤GF),再经剪切、混合工艺,共混制备了长玻纤增强高密度聚乙烯(HDPE)复合材料。采用万能拉伸测试仪、冲击强度测试仪和熔体流动速率(MFR)测试仪,测试了复合材料的力学性能和流动性... 详细信息

以N406作为偶联剂,向双螺杆挤出机中连续加入玻璃纤维(玻纤GF),再经剪切、混合工艺,共混制备了长玻纤增强高密度聚乙烯(HDPE)复合材料。采用万能拉伸测试仪、冲击强度测试仪和熔体流动速率(MFR)测试仪,测试了复合材料的力学性能和流动性能;采用差式扫描量热仪(DSC)表征了复合材料的结晶温度、熔融温度;用热失重分析仪(TG)测量了复合材料的玻纤含量。研究结果表明,N406的用量对HDPE的拉伸强度的影响不大,但对冲击强度和MFR的影响较明显。偶联剂用量为8%时,相较未用偶联剂的长玻纤,增强HDPE复合材料的冲击强度提高了64.34%,MFR降低了40.07%。随着玻纤含量增加,拉伸强度、冲击强度升高,MFR降低;HDPE的结晶温度降低,熔融温度增加。玻纤含量为31.26%的复合材料,拉伸强度达到62.88MPa,较纯HDPE提高了180.97%。

关键词：长玻璃纤维高密度聚乙烯偶联剂复合材料

Precession–nutation correction for star tracker attitude measurement of STECE satellite

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Chinese Journal of Aeronautics 2014年第1期27卷 117-124页

作者： Lai Yuwang liu junhong Ding Yonghe Gu Defeng Yi Dongyun Department of Mathematics and Systems Science National University of Defense Technology Beijing Institute of Tracking and Telecommunication Technology

Space Technology Experiment and Climate Exploration （STECE） is a small satellite mis- sion of China for space technology experiment and climate exploration. A new test star tracker and one ASTRO 10 star tracker have been loaded on the STECE satellite to test the new star tracker＇s measurement performance. However, there is no autonomous precession nutation correction func- tion for the test star tracker, which causes an apparent periodic deflection in the inter-boresight angle between the two star trackers with respect to each other of up to - 500 arcsec, so the preces- sion and nutation effect needs to be considered while assessing the test star tracker. This paper researches on the precession-nutation correction for the test star traeker＇s attitude measurement and presents a precession-nutation correction method based on attitude quaternion data. The peri- odic deflection of the inter-boresight angle between the two star trackers has been greatly eliminated after the precession and nutation of the test star tracker＇s attitude data have been corrected by the proposed method and the validity of the proposed algorithm has been demonstrated. The in-flight accuracy of the test star tracker has been assessed like attitude noise and low-frequency errors after the precession-nutation correction.

关键词： Attitude determination Low-frequency periodicerror Precession-nutation Star trackers STECE satellite