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Unveiling strain-enhanced moiréexciton localization in twisted van der Waals homostructures

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Nano Research 2024年第4期17卷 3245-3252页

作者： Henry Rui He Haihong Zheng Biao wu Shaofei Li Junnan Ding Zongwen Liu Jian-Tao Wang Anlian Pan yanping Liu Institute of Quantum Physics School of PhysicsCentral South UniversityChangsha 410083China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South UniversityChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China College of Materials Science and Engineering Hunan UniversityChangsha 410082China State Key Laboratory of High-Performance Complex Manufacturing Central South UniversityChangsha 410083China Shenzhen Research Institute of Central South University Shenzhen 51800China

Moirésuperlattices,arising from the controlled twisting of van der Waals homostructures at specific angles,have emerged as a promising platform for quantum emission applications.Concurrently,the manipulation of strain provides a versatile strategy to finely adjust electronic band structures,enhance exciton luminescence efficiency,and establish a robust foundation for two-dimensional quantum light sources.However,the intricate interplay between strain and moirépotential remains partially unexplored.Here,we introduce a meticulously designed fusion of strain engineering and the twisted 2L-WSe_(2)/2L-WSe_(2) homobilayers,resulting in the precise localization of moiréexcitons.Employing low-temperature photoluminescence spectroscopy,we unveil the emergence of highly localized moiré-enhanced emission,characterized by the presence of multiple distinct emission lines.Furthermore,our investigation demonstrates the effective regulation of moirépotential depths through strain engineering,with the potential depths of strained and unstrained regions differing by 91%.By combining both experimental and theoretical approaches,our study elucidates the complex relationship between strain and moirépotential,thereby opening avenues for generating strain-induced moiréexciton single-photon sources.

关键词： moirésuperlattices strain engineering moiréexcitons moirépotential

手术联合肝动脉灌注化疗治疗胰腺鳞癌伴多发性肝转移一例

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中华普通外科学文献（电子版） 2024年第2期18卷 130-131页

作者：伍焱平郭泽毅甘禄祥谢庆余何国林蔡磊潘明新付顺军南方医科大学珠江医院肝胆二科广州510280 广东省人民医院胰腺中心广州510080

患者男,64岁。因“上腹疼痛3 d”前往当地医院就诊,行CT检查提示胰腺占位性病变伴肝脏多发性占位,为求进一步诊治,于2022年6月转至本院就诊。体格检查发现上腹部压痛明显,未见明显黄疸。实验室检查示:丙氨酸转氨酶46 U/L、天冬氨酸转氨... 详细信息

患者男,64岁。因“上腹疼痛3 d”前往当地医院就诊,行CT检查提示胰腺占位性病变伴肝脏多发性占位,为求进一步诊治,于2022年6月转至本院就诊。体格检查发现上腹部压痛明显,未见明显黄疸。实验室检查示:丙氨酸转氨酶46 U/L、天冬氨酸转氨酶58 U/L、总胆红素9.1μmol/L、神经元特异性烯醇化酶52μg/L,其余指标未见异常。上腹部增强CT示:1.肝实质内多发大小不等低密度影,部分可见牛眼征;2.胰尾部稍肿大,见片状低密度影,增强扫描强化稍弱,考虑胰腺癌可能(图1A、B)。初步诊断:胰腺癌伴肝脏多发转移。经多学科会诊并与患者家属充分沟通后,于2022年6月30日行腹腔镜辅助胰体尾切除+脾切除+肝脏肿块活检术。

关键词：上腹部压痛胰体尾切除肝动脉灌注化疗神经元特异性烯醇化酶低密度影肝转移肝实质丙氨酸转氨酶

Study on Function of Rare Earth During Producing Phosphate Fertilizer by Wet Process

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Journal of Rare Earths 2004年第Z1期22卷 261-264页

作者： Wang Jiachen Liu Xiangsheng Yang Jun Fan Yubin wu yanping Beijing General Research Instiutes for Nonferrous Metals 100088 BeijingChina National Rare Earth Center for Agriculture of China100088 BeijingChina Grirem Advanced Materials Co. Ltd. Beijing 100088China Beijing General Research Instiutes for Nonferrous Metals100088 BeijingChina National Rare Earth Center for Agriculture of China100088 BeijingChina Grirem Advanced Materials Co. Ltd. Beijing 100088China

The impacts of the Rare Earth (RE) on the contents of available Phosphorus (P) and the physical character of the calcium superphosphate produced by the wet process on the basis of simulating the consumption of concentrated sulphuric acid, the slurry concentration and the cure conditions in different wet process were studied in laboratory, and the results show that adding RE into different wet process does not raise available P, but changes its physical character,for example, the composite is loose and the color is offwhite.

关键词： rare earth phosphate fertilizer, wet process, physical characteristics, available P

Acceptor-planarized typeⅠphotosensitizer for lipid droplet-targeted two-photon photodynamic therapy by ferroptosis

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Science China Chemistry 2024年第7期67卷 2392-2402页

作者： Jie Sha Weimin Liu Jiasheng wu yanping Wang Xuewei Li Haohui Ren Zhi Pang Wenjun Zhang Chun-Sing Lee Pengfei Wang Key Laboratory of Photochemical Conversion and Optoelectronic Materials CityU-CAS Joint Laboratory of Functional Materials and DevicesTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China Center of Super-Diamond and Advanced Films&Department of Materials Science and Engineering City University of Hong KongHong KongChina

Two-photon photodynamic therapy(TP-PDT)has garnered significant attention because of its excellent depth of tissue penetration and high spatiotemporal selectivity.However,the limited targeting ability and oxygen dependency of photosensitizers(PSs)significantly hinder the effectiveness of photodynamic therapy in hypoxic tumor treatment.Herein,we designed and synthesized two lipid droplet(LD)-targeted two-photon PSs(TBPCP and TBCP)by reducing benzene rings to achieve“acceptor planarization”.Notably,acceptor planarization not only enhanced the intramolecular charge transfer but also transferred the photochemical reaction from typeⅡ(TBPCP)to typeⅠ(TBCP).Under the irradiation of 940 nm femtosecond pulsed laser,TBPCP and TBCP showed bright two-photon-excited fluorescence and excellent LD targeting in living cells.Comparing TBPCP(typeⅡPS),the outstanding TP-PDT efficacy of TBCP(typeⅠPS)under hypoxic conditions could be obtained in both cellular experiments and multicellular tumor spheroids(MCTS)model.Additionally,both TBPCP and TBCP could induce the lipid peroxidation in the typeⅠor typeⅡPDT due to the location of LD,depleting GSH and inactivating GPX4 to induce nonprogrammed ferroptosis in cells.

关键词： two-photon photodynamic therapy lipid droplet targeting acceptor planarization hypoxia tumor ferroptosis

关节镜下松解非创伤性肘关节僵硬手术的疗效分析

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骨科临床与研究杂志 2024年第3期9卷 189-192页

作者：肖军杰齐江明齐伟亚朱辉郑大伟孔维康吴艳萍胡俊生徐州仁慈医院骨科 221000 郑州市骨科医院骨科 450000

目的探讨关节镜下松解非创伤性肘关节僵硬手术治疗的效果。方法回顾性分析2020年7月至2023年1月徐州仁慈医院骨科采用关节镜松解治疗的50例非创伤性肘关节僵硬患者资料,评价临床及影像结果。结果所有患者均顺利完成手术,切口48例一期愈... 详细信息

目的探讨关节镜下松解非创伤性肘关节僵硬手术治疗的效果。方法回顾性分析2020年7月至2023年1月徐州仁慈医院骨科采用关节镜松解治疗的50例非创伤性肘关节僵硬患者资料,评价临床及影像结果。结果所有患者均顺利完成手术,切口48例一期愈合。2例出现关节液外渗,经换药处理均2周后愈合。1例出现肱静脉损伤;2例出现尺神经感觉支配区麻木,经治疗后均3个月恢复。50例均无切口感染。随访(15.0±4.7)个月。末次随访时VAS评分显著下降[(0.6±1.3)分比(0.2±0.2)分,P=0.002];而MEPS评分、肘关节屈伸ROM显著增加[(66.7±4.4)分比(87.5±6.8)分,P<0.001]。末次随访时1例出现异位骨化。结论关节镜下肘关节松解术治疗非外伤性肘关节僵硬可获得满意临床疗效,但肘关节镜技术学习曲线较长、具有一定难度,需注意手术操作细节,尽可能减少并发症。

关键词：关节镜肘关节僵硬

Alternative Splicing of OsCYL4 Controls Drought Resistance via Regulating Water Loss and Reactive Oxygen Species-Scavenging in Rice

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Rice science 2024年第1期31卷 1-5,I0001-I0008页

作者： SHA Gan SHEN Xin wu Zini XU Xiaocan XU Xin TAN yanping LIU Xinqiong TANG Xianyin WANG Chuntai QIN Yonghua Hubei Provincial Key Laboratory for Protection and Application of Special Plants in wuling Area College of Life SciencesSouth Central Minzu UniversityWuhan 430074China Huazhong Agricultural University Wuhan 430070China

A rice cyclase gene,OsCYL4b,identified as an alternative splice variant of the cyclase gene OsCYL4a,is involved in the regulation of drought stress and oxidative response.Compared with OsCYL4a,OsCYL4b lacks the second exon,which is located in the conserved motif 3,and may be a functionally important site.Our results suggested that OsCYL4b was responsive to multiple abiotic stresses,and was localized to both the cytoplasm and plasma membrane.The overexpression of OsCYL4b resulted in significantly enhanced drought and osmotic stress tolerance,reduced water loss,and increased abscisic acid(ABA)content compared with the wild type(WT).

关键词： drought Oxygen stress

Aluminum neurotoxicity effects on intracellular Ca^(2+) homeostasis in the rat cerebral cortex

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Neural Regeneration Research 2010年第15期5卷 1180-1184页

作者： Rui Ren Yang Zhang Xiaofeng Zhang yanping wu Dandan Zhang Baixiang Li Department of Toxicology Public Health College of Harbin Medical University Harbin 150081 Heilongjiang Province China

Studies have suggested that aluminum, a neurotoxic metal, is involved in the progression of neurodegenerative diseases. Previous studies have confirmed that aluminum influences intracellular Ca^2＋ homeostasis. However, it remains unclear whether aluminum increases or decreases intracellular Ca^2＋ concentrations. The present study demonstrated that Al^3＋ competitively binds to calmodulin （CAM）, together with Ca^2＋, which resulted in loss of capacity of CaM to bind to Ca^2＋, leading to increased [Ca^2＋]i. Al^3＋ stimulated voltage-gated calcium channels on cell membranes, which allowed a small quantity of Ca^2＋ into the cells. Al^3＋ also promoted calcium release from organelles by stimulating L-Ca^2＋αlc to trigger calcium-induced calcium release. Although Al^3＋ upregulated expression of Na＋/Ca^2＋exchanger mRNA, increased levels of Ca^2＋ and Na＋/Ca^2＋ exchanger did not maintain a normal Ca^2＋ balance. Al^3＋ resulted in disordered intracellular calcium homeostasis by affecting calcium channels, calcium buffering, and calcium expulsion.

关键词： aluminum chloride Ca^2＋ concentration calcium homeostasis neurotoxicity

提质培优背景下高职国际化办学水平提升的价值、原则与对策

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教育与职业 2022年第1期1001卷 53-57页

作者：吴燕萍义乌工商职业技术学院浙江义乌322000

提质培优背景下,提升高职国际化办学水平是增强国家软实力的客观需要、是国家重大战略的重要支撑、是建立现代职业教育体系的必要补充,应坚持扎根中国、融通中外,立足现实、面向未来,“引进来”与“走出去”并重,注重内涵、提高质量等... 详细信息

提质培优背景下,提升高职国际化办学水平是增强国家软实力的客观需要、是国家重大战略的重要支撑、是建立现代职业教育体系的必要补充,应坚持扎根中国、融通中外,立足现实、面向未来,“引进来”与“走出去”并重,注重内涵、提高质量等四项原则,通过系统化制定高职国际化办学的法规政策体系、一体化设计高职国际化办学的战略规划、多方位开发高职国际化办学的标准、整体性搭建高职国际化办学的合作交流平台、科学化构建高职国际化办学的质量评价机制等实施策略,有效提升高职国际化办学质量。

关键词：提质培优高职国际化办学

共情与迭代:一个体育人类学者的“成人礼”及学术议题析出过程的民族志

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上海体育学院学报 2022年第12期46卷 34-47页

作者：吴艳萍熊焰苏州大学体育学院江苏苏州215021 江苏大学体育部江苏镇江212013 广州大学体育学院广东广州510006

目前,体育人类学乃至体育学质性研究领域的大部分成果仅呈现“对研究对象的研究”,忽视对“文本”形成前的议题产生过程的探讨。以中国西南地区独竹漂进校园的田野调查过程为研究对象,展开“对议题析出过程”的民族志书写及反思,呈现一... 详细信息

目前,体育人类学乃至体育学质性研究领域的大部分成果仅呈现“对研究对象的研究”,忽视对“文本”形成前的议题产生过程的探讨。以中国西南地区独竹漂进校园的田野调查过程为研究对象,展开“对议题析出过程”的民族志书写及反思,呈现一个体育人类学者的“成人礼”以及体育非物质文化遗产进校园过程中“权力、利益与道德实践”议题的生成过程。认为,体育人类学议题生成是一个动态变化的过程,遵循“预设—解体—悬置—聚焦”的路径。此路径的实现依赖研究者的共情能力及迭代思维,其中,共情是让意外材料涌现的基础,而迭代则是意外材料走向理论的路径。

关键词：预设悬置共情迭代体育人类学民族志成人礼