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Rare Metals 2024年第2期43卷 431-454页

作者： Rui-Jie Zhu Jiang Liu chao hua Hao-Yu Pan Yi-Jun Cao Meng Li Zhongyuan Critical Metals Laboratory Zhengzhou UniversityZhengzhou450001China School of Chemical Engineering Zhengzhou UniversityZhengzhou450001China

Solid-state flexible supercapacitors(SCs)have many advantages of high specific capacitance,excellent flexibility,fast charging and discharging,high power density,environmental friendliness,high safety,light weight,ductility,and long cycle *** are the ideal choice for the development of flexible energy storage technology in the future,and provide a good prospect for energy storage *** present,solid-state flexible SCs are widely used for portable electronic equipment and wearable energy storage equipment,the research of them has become the focus of a growing number of *** material is the key part of SCs and always determines the electrochemical performance of *** has been a hotspot and focus of ***-based compounds are considered to be a promising electrode material for SCs because of variable valence,open structure,high theoretical capacity,and low ***,this study first gives an overview of solid-state flexible SCs,then reviews the current research status of vanadium-based electrode materials in solid-state flexible SCs,and proposes some strategies to solve some problems of vanadium-based electrode materials.

关键词： Vanadium-based materials Flexible energy storage Specific capacitance Supercapacitors(SCs)

Polysaccharide of Alocasia cucullata Exerts Antitumor Effect by Regulating Bcl-2, Caspase-3 and ERK1/2 Expressions during Long-Time Administration

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Chinese Journal of Integrative Medicine 2024年第1期30卷 52-61页

作者： ZHOU Qi-chun XIAO Shi-lin LIN Ru-kun LI Chan CHEN Zhi-jie CHEN Yi-fei LUO chao-hua MO Zhi-xian LIN Ying-bo School of Traditional Chinese Medicine Southern Medical UniversityGuangzhou(510515)China Clinical and Basic Research Team of TCM Prevention and Treatment of Non-Small Cell Lung Cancer the Second Clinical College of Guangzhou University of Chinese MedicineGuangzhou(510120)China Department of Chinese Medicine Zhujiang Hospital Affiliated to Southern Medical UniversityGuangzhou(510282)China Department of Pharmacy Jiangmen Central HospitalJiangmen(529000)China

Objective: To study the in vitro and in vivo antitumor effects of the polysaccharide of Alocasia cucullata(PAC) and the underlying mechanism. Methods: B16F10 and 4T1 cells were cultured with PAC of 40 μg/m L, and PAC was withdrawn after 40 days of administration. The cell viability was detected by cell counting kit-8. The expression of Bcl-2 and Caspase-3 proteins were detected by Western blot and the expressions of ERK1/2 mRNA were detected by quantitative real-time polymerase chain reaction(qRT-PCR). A mouse melanoma model was established to study the effect of PAC during long-time administration. Mice were divided into 3 treatment groups: control group treated with normal saline, positive control group(LNT group) treated with lentinan at 100 mg/(kg·d), and PAC group treated with PAC at 120 mg/(kg·d). The pathological changes of tumor tissues were observed by hematoxylin-eosin staining. The cell apoptosis of tumor tissues was detected by TUNEL staining. Bcl-2 and Caspase-3 protein expressions were detected by immunohistochemistry, and the expressions of ERK1/2, JNK1 and p38 mRNA were detected by qRT-PCR. Results: In vitro, no strong inhibitory effects of PAC were found in various tumor cells after 48 or 72 h of administration. Interestingly however, after 40 days of cultivation under PAC, an inhibitory effect on B16F10 cells was found. Correspondingly, the long-time administration of PAC led to downregulation of Bcl-2 protein(P <0.05), up-regulation of Caspase-3 protein(P<0.05) and ERK1 mRNA(P<0.05) in B16F10 cells. The above results were verified by in vivo experiments. In addition, viability of B16F10 cells under long-time administration culture in vitro decreased after drug withdrawal, and similar results were also observed in 4T1 cells. Conclusions: Long-time administration of PAC can significantly inhibit viability and promote apoptosis of tumor cells, and had obvious antitumor effect in tumor-bearing mice.

关键词： polysaccharide of Alocasia cucullata tumor cells Bcl-2 Caspase-3 ERK1/2 Chinese medicine

“雅颂之音”与“讽谕之鸣”:论礼乐复兴视域下的宋初文学

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新疆大学学报（哲学社会科学版） 2024年第1期52卷 131-138页

作者：罗超华山东大学文学院山东济南250100

宋初文坛纷繁复杂,不仅呈现出南北对峙、难以融合的紧张局面,还产生了时文与古文的创作分歧。而于此之外,士人群体内又共同含纳着一股颂美君王功业、宣扬帝国政治的风气。尽管从传统文艺审美的角度看,这种风气催生的文学作品多属程式化... 详细信息

宋初文坛纷繁复杂,不仅呈现出南北对峙、难以融合的紧张局面,还产生了时文与古文的创作分歧。而于此之外,士人群体内又共同含纳着一股颂美君王功业、宣扬帝国政治的风气。尽管从传统文艺审美的角度看,这种风气催生的文学作品多属程式化的礼仪书写,但若将之置于宋初礼乐复兴视域下进行更深层次解读,则于某些赋颂中可观觇士大夫政治主体意识的觉醒迹象,且雅颂主旋律中讽喻之声的鸣起,又宣示了宋初文人对唐人风雅观的进一步开拓。这些被程式化书写遮蔽的内容,实质是政治与文学的合奏交响,二者间表里经纬的错综关系及由此生成的强力互动,正体现出此间特殊的文学生态。

关键词：礼乐宋代雅颂文学风气儒道

Leveraging crystal symmetry for thermoelectric performance optimization in cubic GeSe

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Rare Metals 2024年第10期 5332-5345页

作者： Yu-Geng Li Yong-Qiang Liu Mo-Ran Wang Wen-Qing Yao Xiao-huan Luo Tu Lyu Wei-Qin Ao chao-hua Zhang Fu-Sheng Liu Li-Peng Hu College of Materials Science and Engineering Institute of Deep Earth Sciences and Green EnergyShenzhen Key Laboratory of Special Functional MaterialsGuangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and UtilizationGuangdong Research Center for Interfacial Engineering of Functional MaterialsShenzhen University College of Materials Science and Engineering Institute of DeepEarth Sciences and Green EnergyShenzhen Key Laboratory of Special Functional MaterialsGuangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and UtilizationGuangdong Research Center for Interfacial Engineering of Functional MaterialsShenzhen University

In thermoelectrics,the manipulation of crystal symmetry is instrumental in optimizing the electrical and thermal transport *** this context,the present study explored the largely overlooked high-symmetry cubic GeSe,which presented larger band degeneracy than its widely studied medium-symmetry rhombohedral *** have successfully stabilized cubic Ge Se a ambient conditions through co-alloying with AgSnTe2and *** incorporation of AgSnTe2initiates the transition of GeSe from a low-symmetry orthorhombic to a mediumsymmetry rhombohedral phase,culminating in a highsymmetry cubic structure,underpinned by variation in chemical bonding *** this,the persistence of Ag2Te precipitates impedes the total elimination of the residual orthorhombic phase due to the disparate chemical bonding mechanism between Ag2Te and *** Bi into the rhombohedral-dominated（GeSe）0.7（AgSnTe2）0.3matrix leads to the dissolution of Ag2Te precipitates,elimination of the residual orthorhombic phase,and the subsequent stabilization of the exclusive cubic *** to its orthorhombic counterpart,the cubic GeSe exhibits diminished bandgap and Ge vacancy formation energy,amplified band degeneracy,reduced sound velocity,intensified lattice anharmonicity and multiple phonon scattering centres engendering elevated carrier concentration and density-ofstates effective mass,alongside restrained lattice therma ***,a peak zT of 0.46 at 573 K is attained for cubic (Ge0.7Bi0.3Se)0.7（AgSnTe2）0.3,signifying a ninefold increase relative to the initial orthorhombic Ge *** results illuminate the critical role of crystal symmetry manipulation in advancing the thermoelectric performance.

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基于凹槽结构的导管螺旋桨梢部流动研究

船舶力学 2024年第6期28卷 866-876页

作者：金志辉王鹏董华超温志文丁永乐西安精密机械研究所西安710077 西北工业大学航海学院西安710072

针对导管螺旋桨的梢部流动,受压气机中“机匣处理”的启发,将矩形凹槽结构应用于导管内壁,用于降低导管螺旋桨梢涡强度和抑制梢涡空化,进而有望改善导管螺旋桨的水动力和空泡性能。采用计算流体力学方法,针对19A导管和Ka4-70螺旋桨有无... 详细信息

针对导管螺旋桨的梢部流动,受压气机中“机匣处理”的启发,将矩形凹槽结构应用于导管内壁,用于降低导管螺旋桨梢涡强度和抑制梢涡空化,进而有望改善导管螺旋桨的水动力和空泡性能。采用计算流体力学方法,针对19A导管和Ka4-70螺旋桨有无凹槽/不同凹槽结构进行非定常数值计算,研究凹槽结构对桨叶叶梢压力、梢涡强度、梢涡结构以及水动力性能的影响。结果表明:凹槽结构会明显改变导管螺旋桨梢部流场涡的形成,减弱梢涡强度,提高叶片梢部最小压力,并且对推进性能几乎没有影响。研究结果可为导管螺旋桨的梢涡控制以及减振降噪提供一种新的解决途径。

关键词：导管螺旋桨凹槽结构梢涡结构空泡机匣处理

《共产党宣言》中的经济全球化思想及当代价值

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江苏工程职业技术学院学报 2024年第3期24卷 36-42页

作者：巢华南通大学马克思主义学院南通226019

《共产党宣言》虽没有明确提出“经济全球化”的概念,但蕴含着深刻的经济全球化思想,通过对资本主义生产方式的确立、世界市场的发展、政治和文化的全球化、实现“自由人的联合体”等方面的深入剖析,揭示了经济全球化的起源、发展主线... 详细信息

《共产党宣言》虽没有明确提出“经济全球化”的概念,但蕴含着深刻的经济全球化思想,通过对资本主义生产方式的确立、世界市场的发展、政治和文化的全球化、实现“自由人的联合体”等方面的深入剖析,揭示了经济全球化的起源、发展主线、重要影响和历史走向。探析《共产党宣言》中的经济全球化思想,对“两个大局”时代背景下回击逆全球化行径、推进“一带一路”倡议全面落实、构建人类命运共同体具有重要的指导意义。

关键词：《共产党宣言》经济全球化 “一带一路”倡议人类命运共同体

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跨学科主题学习:何为、难为与可为

教育理论与实践 2024年第8期44卷 3-8页

作者：郭超华王雨晴辽宁师范大学教育学部辽宁大连116029

跨学科主题学习是推进新时代基础教育课程教学改革,落实综合性人才培育目标的新方向。当前,跨学科主题学习的开展面临着“分科至上”的理念、“跨而不合”的学习内容以及储蓄式学习方式等诸多不可为之难。跨学科主题学习之可为需要探寻... 详细信息

跨学科主题学习是推进新时代基础教育课程教学改革,落实综合性人才培育目标的新方向。当前,跨学科主题学习的开展面临着“分科至上”的理念、“跨而不合”的学习内容以及储蓄式学习方式等诸多不可为之难。跨学科主题学习之可为需要探寻学科跨越点,增进知识内容融合度;精选跨学科主题情境,创设适宜性教学场域;落实体验性学习,提升学生学习的“在场感”;倡导融通性教学评价,关注学生学习发展全过程。

关键词：跨学科主题学习学科跨越点跨学科主题情境体验性学习融通性评价

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模糊自适应交流异步电机矢量控制

科学技术与工程 2024年第13期24卷 5381-5387页

作者：达朝华崔彦良兰州交通大学机电工程学院兰州730070

为提升传统交流异步电机矢量控制系统的控制效果,解决由交流电机特性带来的响应速度慢和稳态抖动等问题,设计了一种模糊自适应矢量控制系统,对传统的矢量控制系统进行改进,设计了按转子磁场定向的四闭环矢量控制系统,并且针对传统矢量... 详细信息

为提升传统交流异步电机矢量控制系统的控制效果,解决由交流电机特性带来的响应速度慢和稳态抖动等问题,设计了一种模糊自适应矢量控制系统,对传统的矢量控制系统进行改进,设计了按转子磁场定向的四闭环矢量控制系统,并且针对传统矢量控制的稳态波动问题,加入了设计的定值控制器。在MATLAB/Simulink中搭建了仿真系统,为使实验结果更贴合实际,设计了交流异步电机所使用的整流逆变电路。仿真实验结果表明:该控制系统的动态性能更好,响应速度更快,且提升了抵抗负载的能力,具有更强的自适应性和鲁棒性。

关键词：异步电机矢量控制模糊自适应模糊控制

氮化硼纳米管表面结构设计及其对环氧复合电介质性能调控机理

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物理学报 2024年第2期73卷 26-37页

作者：任俊文姜国庆陈志杰魏华超赵莉华贾申利四川大学电气工程学院成都610065

向环氧树脂基体中加入纳米填料是实现其多功能化的常用手段,其中拥有一维纳米结构的氮化硼纳米管(BNNTs),因具有超高导热系数、宽能级带隙、高长径比、高力学强度而备受关注.然而,表面惰性、易团聚、与环氧树脂之间界面作用弱等缺点极... 详细信息

向环氧树脂基体中加入纳米填料是实现其多功能化的常用手段,其中拥有一维纳米结构的氮化硼纳米管(BNNTs),因具有超高导热系数、宽能级带隙、高长径比、高力学强度而备受关注.然而,表面惰性、易团聚、与环氧树脂之间界面作用弱等缺点极大地制约了BNNTs进一步应用.基于此,本文提出采用表面包覆介孔二氧化硅(mSiO_(2)),并接枝硅烷偶联剂功能分子的方法,优化BNNTs表面特性.结果表明,通过表面结构设计及功能化,可显著改善BNNTs的分散特性,提升其与环氧树脂的界面作用.以此所制备的环氧复合电介质可实现力学韧性和导热系数的同步提升,并兼具较低的介电常数与损耗.此外,mSiO_(2)独特的纳米介孔结构赋予复合电介质大量的深陷阱,有效阻碍了电子的迁移,进而提高复合电介质的电气强度.本文为环氧树脂的多功能化提供了新思路,亦对揭示纳米填料表面特性-复合电介质微观结构-宏观性能之间的关联关系提供了一定实验数据支撑.

关键词：环氧树脂氮化硼纳米管介电性能界面调控

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水产养殖尾水高效脱氮技术和装置的研究

环境科技 2024年第1期37卷 22-26,33页

作者：李华超广州资源环保科技股份有限公司广东广州510000

结合脱氮生物滤池技术与流离生化法,构建了以脱氮为主要目的、兼顾其他指标达标处理的水产养殖尾水净化装置,在野外条件下,探究其对低C/N、高浓度DO的水产养殖尾水中主要污染物的去除效率。在间歇式进出水、无曝气、HRT为4.8 h的运行工... 详细信息

结合脱氮生物滤池技术与流离生化法,构建了以脱氮为主要目的、兼顾其他指标达标处理的水产养殖尾水净化装置,在野外条件下,探究其对低C/N、高浓度DO的水产养殖尾水中主要污染物的去除效率。在间歇式进出水、无曝气、HRT为4.8 h的运行工况下,通过连续6个月的跟踪监测,分析了水质指标的变化及尾水净化后主要污染物的去除率。研究表明,实验装置对低C/N、高浓度DO的水产养殖尾水反硝化脱氮效率较高,对其他污染物也有较好的净化效果,各项主要污染物均可稳定达到SC/T 9101—2007《淡水池塘养殖水排放要求》。

关键词：水产养殖尾水水质净化生物滤池反硝化脱氮低C/N