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Observation of topological charge transformations in acoustic vortex using passive periodic systems

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 140-147页

作者： Di-chao Chen Xie liu Changqing Xu Da-Jian Wu Ying Cheng Xiao-Jun liu School of Physics and Technology Nanjing Normal University Key Laboratory of Modern Acoustics School of Physics Nanjing University

Vortex transmutation utilizes a periodic system, which not only enables the alteration of the topological charge(TC) of unstable input vortices but also facilitates their transformation into stable structures. This approach is crucial for investigating the characteristics of vortices in various wave systems. Here, we achieve acoustic vortex TC transmutation by employing a welldesigned dual-structured plate external system(DPES). The interactions between the acoustic vortex and the finite-order discrete rotational symmetry lead to the transformation of its topological charge when complete rotational symmetry is broken to Nthorder discrete symmetry. Our results experimentally demonstrate the acoustic vortex TC transmutation based on passive artificial structures, enabling numerous applications in particle manipulation and information multiplexing as well as advancing our understanding and control over free-space acoustic vortices.

关键词： acoustic vortex topological charge transformation artificial structure

Preparation and Performance of Ternary Early Strength Agent and Quercetin Composite Cement Sealing Material

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 130-140页

作者： liu Jian CHEN Meiting JI Xiaoli XU chao WANG Chunmei Department of Safety Science and Engineering Anhui University of Science and TechnologyHuainan 232001China Key Laboratory of Mine Safety and High Efficient Mining Jointly Built by Province and Education Ministry Anhui University of Science and TechnologyHuainan 232001China Department of Chemical Engineering and Explosives Anhui University of Science and TechnologyHuainan 232001China

A ternary early-strengthening agent consisting of calcium formate+triethanolamine+lithium sulfate was compounded with quercetin to shorten the setting time of cementitious materials while ensuring their early *** optimum ratio of the three early-strengthening agents was determined as 0.5%calcium formate+0.04%triethanolamine+0.4%lithium sulfate by response surface *** effects of the ternary early-strengthening agent composed of calcium formate+triethanolamine(TEA)+lithium sulfate on cementitious pore sealing materials under the synergistic effect of quercetin were studied by means of the performance tests of compressive strength,fluidity,and setting time,and the microstructural characterizations of X-ray powder diffractometer(XRD),thermogravimetry(TG-DSC)and scanning electron microscopy(SEM).The study shows that the synergistic effect of ternary early-strengthening agent and quercetin forms a multi-performance composite admixture for cementitious *** best performance was obtained with the compounding scheme of 0.5%calcium formate+0.04%triethanolamine+0.4%lithium sulfate ternary early-strengthening agent and 0.05%*** compressive strength of 1,3,7,and 28 d are 94.8%,39.8%,42%,and 28%higher than those of the blank group,*** initial time and final setting time are 41 and 57 minutes,*** to the microscopic analysis,the network and fibrous C-S-H gels generated by ternary early-strengthening agents are attached to the surface promoted by quercetin,which forms skeleton support while thickening and solidifying the cement slurry,which enhances the early compressive strength of the cement-based materials.

关键词： sealing material ternary early-strengthening agent quercetin synergetic effect response surface methodology

Engineered Cancer Nanovaccines:A New Frontier in Cancer Therapy

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Nano-Micro Letters 2025年第2期17卷 134-168页

作者： Yijie Wang Congrui liu chao Fang Qiuxia Peng Wen Qin Xuebing Yan Kun Zhang Central Laboratory and Department of Medical Ultrasound Sichuan Academy of Medical SciencesSichuan Provincial People’s HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaNo.32West Second SectionFirst Ring RoadChengdu 610072People’s Republic of China Department of Stomatology and Central Laboratory School of MedicineShanghai Tenth People’s HospitalTongji UniversityNO.301 Yan‑Chang‑Zhong RoadShanghai 200072People’s Republic of China Jiangsu Provincial Innovation and Practice Base for Postdoctors Suining People’s HospitalAffiliated Hospital of Xuzhou Medical UniversityNo.2Bayi West RoadSuiningXu Zhou 221000Jiangsu ProvincePeople’s Republic of China

Vaccinations are essential for preventing and treating disease,especially cancer nanovaccines,which have gained considerable interest recently for their strong anti-tumor immune *** can prompt the immune system to generate antibodies and activate various immune cells,leading to a response against tumor tissues and reducing the negative effects and recurrence risks of traditional chemotherapy and *** enhance the flexibility and targeting of vaccines,nanovaccines utilize nanotechnology to encapsulate or carry antigens at the nanoscale level,enabling more controlled and precise drug delivery to enhance immune *** nanovaccines function by encapsulating tumor-specific antigens or tumor-associated antigens within *** small size of these nanomaterials allows for precise targeting of T cells,dendritic cells,or cancer cells,thereby eliciting a more potent anti-tumor *** this paper,we focus on the classification of carriers for cancer nanovaccines,the roles of different target cells,and clinically tested cancer nanovaccines,discussing strategies for effectively inducing cytotoxic T lymphocytes responses and optimizing antigen presentation,while also looking ahead to the translational challenges of moving from animal experiments to clinical trials.

关键词： Cancer nanovaccines Immunotherapy Nanobiotechnology Immune targets Signaling pathway

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核苷类甲基转移酶抑制剂的研究进展

药学学报 2024年第5期59卷 1126-1150页

作者：张俊杰刘同超熊兵中国科学院上海药物研究所上海201203 中国科学院大学北京100049

S-腺苷-L-蛋氨酸(SAM)作为仅次于ATP第二普遍存在的辅助因子,其主要的功能是作为SAM依赖性甲基转移酶的甲基供体,对DNA、RNA、蛋白质等基本生命物质进行甲基化修饰。此过程构成了表观遗传调控、细胞信号转导和生物代谢循环的重要一环,... 详细信息

S-腺苷-L-蛋氨酸(SAM)作为仅次于ATP第二普遍存在的辅助因子,其主要的功能是作为SAM依赖性甲基转移酶的甲基供体,对DNA、RNA、蛋白质等基本生命物质进行甲基化修饰。此过程构成了表观遗传调控、细胞信号转导和生物代谢循环的重要一环,参与多种疾病的发生与发展,因此,SAM依赖性甲基转移酶已成为药物研发的潜在靶点。最近,许多核苷类分子已经被开发为甲基转移酶的SAM竞争性抑制剂,从而阻断下游的信号通路,达到治疗相关疾病的目的。本文系统性回顾基于SAM结构开展改造的甲基转移酶抑制剂设计策略和研发过程,分析核苷类甲基转移酶抑制剂研发的不足和解决方法,为未来设计靶向甲基转移酶SAM结合位点的核苷类分子提供更多的思路。

关键词：表观遗传学 S-腺苷-L-蛋氨酸甲基转移酶核苷类似物

Flexible Graphene Field‑Effect Transistors and Their Application in Flexible Biomedical Sensing

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Nano-Micro Letters 2025年第2期17卷 252-313页

作者： Mingyuan Sun Shuai Wang Yanbo Liang chao Wang Yunhong Zhang Hong liu Yu Zhang Lin Han Institute of Marine Science and Technology Shandong UniversityQingdao 266237ShandongPeople’s Republic of China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongPeople’s Republic of China School of Integrated Circuits Shandong UniversityJinan 250100ShandongPeople’s Republic of China Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application Jinan250100ShandongPeople’s Republic of China

Flexible electronics are transforming our lives by making daily activities more *** to this innovation are field-effect transistors(FETs),valued for their efficient signal processing,nanoscale fabrication,low-power consumption,fast response times,and ***,known for its exceptional mechanical properties,high electron mobility,and biocompatibility,is an ideal material for FET channels and *** combination of graphene and FETs has given rise to flexible graphene field-effect transistors(FGFETs),driving significant advances in flexible electronics and sparked a strong interest in flexible biomedical ***,we first provide a brief overview of the basic structure,operating mechanism,and evaluation parameters of FGFETs,and delve into their material selection and patterning *** ability of FGFETs to sense strains and biomolecular charges opens up diverse application *** specifically analyze the latest strategies for integrating FGFETs into wearable and implantable flexible biomedical sensors,focusing on the key aspects of constructing high-quality flexible biomedical ***,we discuss the current challenges and prospects of FGFETs and their applications in biomedical *** review will provide valuable insights and inspiration for ongoing research to improve the quality of FGFETs and broaden their application prospects in flexible biomedical sensing.

关键词： Flexible Graphene Field-effect transistor Wearable Implantable Biosensor

Boosting hydrocarbon conversion via Cu-doping induced oxygen vacancies on CeO2 in CO2 electroreduction

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Journal of Energy Chemistry 2025年第1期100卷 66-76页

作者： Lei Xue tong Shi Chenhui Han Heng Zhang Fenrong liu Haorun Li Yan Wang Xiaojun Gu Shanghong Zeng Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials School of Chemistry and Chemical Engineering Inner Mongolia University State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Institute of Catalysis Department of Chemistry Zhejiang University National Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare Earths

Conversion of CO2back to hydrocarbons is the most direct way of closing the“carbon cycle”,and its significance is further enlarged if this process is driven by renewable energies such as ***,precisely controlling the product selectivity towards hydrocarbons against the competitive hydrogen evolution remains challenging,especially for Cu-based ***,we report a novel defect engineering strategy,by which Cu-doping-induced oxygen vacancies on CeO2nanorods were effectively created,with adjustable vacancy/Cu *** resulting optimum catalyst shows up to 79% catalytic current density to hydrocarbons （excluding CO）,with 49% faradaic efficiency to *** and density functional theory unveil that the ratio between oxygen vacancy and Cu affects significantly the formation of*CHO and activation of H2O,which leads to the following deep hydrogenation to *** findings may spur new insights for designing and developing more controllable chemical process relevant to CO2utilization.

关键词： Nanorods

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北极航线安全演化机制与管理策略

数学的实践与认识 2019年第10期49卷 133-142页

作者：刘同超李振福大连海事大学航运经济与管理学院

北极航线作为"冰上丝绸之路"的主要载体,北极航线安全对于建设"冰上丝绸之路"尤为重要.本文通过借鉴传染病模型的构造思路,结合安全系统的特点,建立安全系统的演化机制.然后,运用平均场理论建立了安全系统的微分方程组模型,并对此模型... 详细信息

北极航线作为"冰上丝绸之路"的主要载体,北极航线安全对于建设"冰上丝绸之路"尤为重要.本文通过借鉴传染病模型的构造思路,结合安全系统的特点,建立安全系统的演化机制.然后,运用平均场理论建立了安全系统的微分方程组模型,并对此模型进行平衡点和稳定性分析.最后,根据北极航线安全现状,通过设置不同的情景,考查了不同外部干预下北极航线安全的演化趋势,从而提出相应的对策和建议.研究结果能够为北极航线的开发利用提供借鉴.

关键词：水路运输安全演化机制 SEIR模型北极航线

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区间互反判断矩阵的不一致性改进方法

模糊系统与数学 2017年第4期31卷 117-123页

作者：刘同超李振福大连海事大学交通运输管理学院辽宁大连116026

针对不确定层次分析法中的区间互反判断矩阵的不一致性问题,提出一种新的计算方法。首先,对于影响区间互反判断矩阵不一致性的因素分析,建立线性规划模型,求出不一致情况下的互反判断矩阵的权重向量。其次,根据不一致情况下的权重向量,... 详细信息

针对不确定层次分析法中的区间互反判断矩阵的不一致性问题,提出一种新的计算方法。首先,对于影响区间互反判断矩阵不一致性的因素分析,建立线性规划模型,求出不一致情况下的互反判断矩阵的权重向量。其次,根据不一致情况下的权重向量,构造一种修复区间互补矩阵不一致性的算法,该算法能够在没有决策者参与的情况下得出新的具有一致性的权重向量,并且能够有效地反映决策者的主观愿望和节约时间。最后,通过算例证明该方法的有效性和实用性。

关键词：不确定层次分析法区间判断矩阵不一致性权重向量区间偏离度

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基于演化博弈的北极航线合作策略研究

数学的实践与认识 2021年第15期51卷 21-40页

作者：刘同超许昌学院商学院河南许昌461000

针对北极航线开发利用问题,提出合作建设北极航线的可能性,从而通过演化博弈理论讨论北极国家、非北极国家和原住民的决策演化过程,建立了北极国家与非北极国家、北极国家与原住民的演化博弈模型,根据复制动态方程分析得到了不同参与者... 详细信息

针对北极航线开发利用问题,提出合作建设北极航线的可能性,从而通过演化博弈理论讨论北极国家、非北极国家和原住民的决策演化过程,建立了北极国家与非北极国家、北极国家与原住民的演化博弈模型,根据复制动态方程分析得到了不同参与者的演化稳定策略,并分析了不同参数变化对演化稳定策略的影响.结果表明:北极国家、非北极国家和原住民三者的演化稳定策略与各自的影响因素密切相关,影响因素的变化将会导致不同的演化稳定策略.同时,在参与者的稳定策略出现多个或者没有的情景下,其他因素的变化也会影响参与者选择演化稳定策略的概率.最后,为中国参与北极合作提出了一些措施和建议.

关键词：北极航线演化博弈北极权益中国对策