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High-performance photodetectors based on two-dimensional perovskite crystals with alternating interlayer cations

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Journal of Materiomics 2023年第4期9卷 817-823页

作者： Yezhan Li Zhengxun Lai You Meng Wei Wang yuxuan Zhang Xuwen Zhao Di Yin Weijun Wang Pengshan xie Quan Quan SenPo Yip Johnny C.Ho Department of Materials Science and Engineering City University of Hong Kong999077Hong Kong SARChina Institute for Materials Chemistry and Engineering Kyushu UniversityFukuoka816-8580Japan State Key Laboratory of Terahertz and Millimeter Waves City University of Hong Kong999077Hong Kong SARChina

Organic-inorganic halide perovskite,as a low-cost,solution-processable material with remarkable optoelectronic properties,is ideal candidate to fabricate high-performance photodetectors and is expected to significantly reduce device *** to the common Dion-Jacobson and Ruddlesden-Popper two-dimensional(2D)layered hybrid perovskite compounds,the perovskites with alternating cations in the interlayer(ACI)phase show higher crystal symmetry and narrower optical bandgaps,which exhibit great potential for excellent photodetection ***,we report a high-performance photodetector based on the 2D bilayered hybrid lead halide perovskite single crystal with the ACI phase(GAMA_(2)Pb_(2)I_(7);GA=C(NH_(2))_(3)and MA=CH_(3)NH_(3)).The single-crystal photodetector exhibits high photoresponsivity of 1.56,2.54,and 2.60 A/W for incident light wavelengths of 405,532,and 635 nm under 9.82 nW,respectively,together with the correspondingly high detectivity values of 1.86×10^(12),3.04×10^(12),and 3.11×10^(12)Jones under the same operating ***,a high-resolution imaging sensor is built based on the GAMA_(2)Pb_(2)I_(7)single-crystal photodetector,confirming the high stability and photosensitivity of the imaging *** results show that the 2D hybrid lead halide perovskites with alternating interlayer cations are promising for high-performance visible light photodetectors and imaging systems.

关键词： Photodetector Two-dimensional Hybrid perovskite Alternating interlayer cation Imaging

Engineering biomimetic silk fibroin hydrogel scaffolds with“organic-inorganic assembly”strategy for rapid bone regeneration

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Bioactive Materials 2024年第10期40卷 541-556页

作者： Renjie Liang Rui Li Weidong Mo Xianzhu Zhang Jinchun Ye Chang xie Wenyue Li Zhi Peng Yuqing Gu yuxuan Huang Shufang Zhang Xiaozhao Wang Hongwei Ouyang Department of Sports Medicine of the Second Affiliated Hospital and Liangzhu LaboratoryZhejiang University School of MedicineHangzhouChina Dr.Li Dak Sum&Yip Yio Chin Center for Stem Cells and Regenerative Medicine Zhejiang University School of MedicineHangzhouChina Zhejiang University-University of Edinburgh Institute Zhejiang University School of MedicineHainingChina China Orthopedic Regenerative Medicine Group(CORMed) HangzhouChina Department of Orthopedics The First Affiliated HospitalZhejiang University School of Medicine79 Qingchun RdHangzhouChina

Although natural polymers have been widely used in constructing bone scaffolds,it still remains challenging to fabricate natural polymer-derived bone scaffolds with biomimetic mechanical properties as well as outstanding osteogenic properties for large-size and weight-bearing bone defects ***,an“organic-inorganic assembly”strategy is developed to construct silk fibroin(SF)-based bone scaffolds with the aforementioned *** secondary structure reshuffling,the 3.3-fold increment ofβ-sheet structures in SF hydrogel resulted in a 100-fold improvement of mineral-assembly efficacy via influencing the ion adsorption process and providing templates for mineral ***,abundant minerals were deposited within the hydrogel and also on the surface,which indicated entire mineral-assembly,which ensured the biomimetic mechanical properties of the digital light processing 3D printed SF hydrogel scaffolds with haversian-mimicking *** vitro experiments proved that the assembly between the mineral and SF results in rapid adhesion and enhanced osteogenic differentiation of human bone marrow-derived mesenchymal stem *** vivo experiments further proved that the mineral-assembled SF hydrogel scaffold could significantly enhance integration and bone regeneration at the weight-bearing site within one *** SF-based“organic-inorganic assembly”strategy sheds light on constructing cell-free,growth factor-free and natural polymer-derived bone scaffolds with biomimetic 3D structure,mechanical properties and excellent osteogenic properties.

关键词： Silk fibroin Organic-inorganic assembly Mineralization DLP 3D printing Bone regeneration

Identification of the hydrogen utilization pathway for the electrocatalytic hydrogenation of phenol

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Science China Chemistry 2021年第9期64卷 1586-1595页

作者： Ling Zhou Xiaorong Zhu Hui Su Hongzhen Lin Yanhong Lyu Xu Zhao Chen Chen Nana Zhang Chao xie Yingying Li yuxuan Lu Jianyun Zheng Benrt Johannessen San Ping Jiang Qinghua Liu Yafei Li Yuqin Zou Shuangyin Wang State Key Laboratory of Chem/Bio-Sensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and DevicesCollege of Chemistry and Chemical Engineeringthe National Supercomputer Centers in ChangshaHunan UniversityChangsha410082China College of Chemistry and Materials Science Nanjing Normal UniversityNanjing210023China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei230026China i-LAB Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou215123China Department of Educational Science Hunan First Normal UniversityChangsha410205China Australian Synchrotron ClaytonVictoria3168Australia Western Australian School of Mines:Minerals Energy and Chemical Engineering and Fuels and Energy Technology InstituteCurtin UniversityPerthWA6102Australia

Electrochemical hydrogenation(ECH)of biomass-derived platform molecules is a burgeoning route for the sustainable utilization of ***,the noble-metal-catalyzed ECH of phenolic compounds suffers from intense competition with hydrogen evolution *** prepared Pt Rh bimetallic nanoparticles dispersed on highly ordered mesoporous carbon nanospheres,which improves the utilization efficiency of adsorbed hydrogen(H_(ad))to ECH in H-UPD region(>0 V ***).Further analysis reveals(i)the strong overlapping between the d-orbitals of Pt and Rh enhances specific adsorption of phenol;(ii)incorporation of Rh devotes an electronic effect on weakening the alloy-H_(ad)interaction to increase the FE of *** calculations confirm the selectivity difference and the ECH parallel pathways:cyclohexanol and cyclohexanone are formed via hydrogenation/dehydrogenation of the intermediate ^(*)C_(6)H_(10) *** findings deepen our fundamental understanding of the ECH process,and cast new light on exploration of highly efficient electrocatalysts for biomass upgrading.

关键词： electrohydrogenation aromatic hydrogenation biomass conversion Pt Rh alloy

GOPS:A general optimal control problem solver for autonomous driving and industrial control applications

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Communications in Transportation Research 2023年第1期3卷 92-106页

作者： Wenxuan Wang Yuhang Zhang Jiaxin Gao yuxuan Jiang Yujie Yang Zhilong Zheng Wenjun Zou Jie Li Congsheng Zhang Wenhan Cao Genjin xie Jingliang Duan Shengbo Eben Li School of Vehicle and Mobility Tsinghua UniversityBeijing100084China

Solving optimal control problems serves as the basic demand of industrial control *** methods like model predictive control often suffer from heavy online computational *** learning has shown promise in computer and board games but has yet to be widely adopted in industrial applications due to a lack of accessible,high-accuracy *** Reinforcement learning(RL)solvers are often developed for academic research and require a significant amount of theoretical knowledge and programming ***,many of them only support Python-based environments and limit to model-free *** address this gap,this paper develops General Optimal control Problems Solver(GOPS),an easy-to-use RL solver package that aims to build real-time and high-performance controllers in industrial *** is built with a highly modular structure that retains a flexible framework for secondary *** the diversity of industrial control tasks,GOPS also includes a conversion tool that allows for the use of Matlab/Simulink to support environment construction,controller design,and performance *** handle large-scale problems,GOPS can automatically create various serial and parallel trainers by flexibly combining embedded buffers and *** offers a variety of common approximate functions for policy and value functions,including polynomial,multilayer perceptron,convolutional neural network,***,constrained and robust algorithms for special industrial control systems with state constraints and model uncertainties are also integrated into *** examples,including linear quadratic control,inverted double pendulum,vehicle tracking,humanoid robot,obstacle avoidance,and active suspension control,are tested to verify the performances of GOPS.

关键词： Industrial control Reinforcement learning Approximate dynamic programming Optimal control Neural network Benchmark

Nonstoichiometric Yttrium Hydride–Promoted Reversible Hydrogen Storage in a Liquid Organic Hydrogen Carrier

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CCS Chemistry 2021年第3期3卷 974-984页

作者： Yong Wu Yanru Guo Hongen Yu Xiaojing Jiang yuxuan Zhang Yue Qi Kai Fu Lei xie Guoling Li Jie Zheng Xingguo Li Beijing National Laboratory for Molecular Science(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 Sunan Institute for Molecular Engineering Peking UniversityNanjing 215500 College of Materials Science and Engineering Qingdao UniversityQingdao 266071

N-Ethylcarbazole(NEC)is one of the most promising liquid organic hydrogen carriers(LOHCs),but its application is limited by sluggish kinetics due to lack of high-efficiency,low-cost *** work reports a cobalt(Co)-based catalyst promoted by nonstoichiometric yttrium hydride(YH_(3−x))to achieve high-efficiency,reversible hydrogen storage in NEC,with>5.5 wt%reversible hydrogen storage capacity could be achieved below 473 K,and with good *** YH_(3−x)-promoted Co-based catalyst is the first non-noble metal catalyst with high activity for NEC hydrogenation and 12H-NEC dehydrogenation reactions.A mechanistic study suggests that YH_(3−x)facilitates the reversible hydrogen transfer both in the hydrogenation and the dehydrogenation *** nonstoichiometric YH_(3−x)contained both lattice H and H vacancies with tunable H chemical potential serve as the H donor and H acceptor for reversible hydrogen *** results support the practical application of LOHCs and inspire new approaches for the utilization of conventional metal hydrides to promote versatile H transfer reactions.

关键词： hydrogen storage liquid organic hydrogen carriers N-ethylcarbazole rare-earth hydrides hydrogen transfer

Efficacy and safety of single microneedle radiofrequency *** therapy on moderate-to-severe acne vulgaris:A prospective,randomized,controlled study

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Chinese Medical Journal 2024年第8期137卷 1006-1008页

作者： Chuchu Huang Mengping Mao Yiran Peng Ben Wang yuxuan Deng Hongfu xie Dan Jian Department of Dermatology Xiangya HospitalCentral South UniversityChangshaHunan 410008China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan 410008China Hunan Key Laboratory of Aging Biology Xiangya HospitalCentral South UniversityChangshaHunan 410008China Department of Dermatology and Allergy and Christine Kühne-Center for Allergy Research and EducationUniversity Hospital of BonnD-53127BonnGermany

To the Editor:Acne vulgaris is a prevalent skin disorder affecting both physical and psychosocial health.[1]Although photodynamic therapy(PDT)exists for moderate-to-severe acne,due to its adverse reactions,we are still looking forward to a novel therapeutic option with fewer side ***,radiofrequency has been used to treat moderate acne.[2]In this study,we aimed to evaluate the efcacy and safety of moderate-to-severe acne treatment based on a single microneedle with radiofrequency(MRF)*** during three consecutive sessions through a prospective,randomized,and controlled trial study.

关键词： needle prospective randomized

改良重症超声快速管理方案在心脏外科术后ICU患者低氧血症病因诊断中的应用研究

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陕西医学杂志 2025年第1期54卷 93-96页

作者：韦树旺韦张旭廖世锋韦珊珊韦柳江兰婕燕韦玉璇谢玲玲河池市第三人民医院重症医学科广西河池547000 河池市第三人民医院心胸外科广西河池547000 河池市第三人民医院麻醉科广西河池547000 河池市第三人民医院超声科广西河池547000

目的:探讨改良重症超声快速管理方案(M-CCUE)在心脏外科术后重症监护室(ICU)患者低氧血症病因诊断中的应用。方法:选择86例转入ICU低氧血症患者,采用M-CCUE方案进行病因分析,并与最终诊断结果进行匹配,对比分析M-CCUE方案诊断效能。结果... 详细信息

目的:探讨改良重症超声快速管理方案(M-CCUE)在心脏外科术后重症监护室(ICU)患者低氧血症病因诊断中的应用。方法:选择86例转入ICU低氧血症患者,采用M-CCUE方案进行病因分析,并与最终诊断结果进行匹配,对比分析M-CCUE方案诊断效能。结果:86例常规检查诊断肺水肿30例,胸腔积液17例,肺实变/肺不张25例,气胸12例。经M-CCUE方案诊断肺水肿33例,胸腔积液16例,肺实变/肺不张26例,气胸11例。进一步评估,最终确诊肺水肿34例,胸腔积液16例,肺实变/肺不张26例,气胸10例。常规检查对气胸诊断特异度为92.10%,灵敏度为60.00%,肺水肿诊断特异度为84.61%,灵敏度为64.70%,对胸腔积液、肺实变/肺不张诊断灵敏度均为超过60.00%。M-CCUE方案对胸腔积液、肺实变/肺不张、气胸诊断的特异度、灵敏度均高于80.00%。结论:M-CCUE方案对心脏外科术后低氧血症患者病因诊断灵敏度、特异度较高。

关键词：改良重症超声快速管理方案超声心脏手术 ICU 低氧血症

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基于选择实验法的西双版纳人象冲突治理措施

林业科学 2023年第10期59卷 162-170页

作者：胡宇轩陈俊峰谢屹北京林业大学经济管理学院北京100083 延安大学经济与管理学院延安716099

【目的】厘清影响农户选择人象冲突治理措施的关键因素,为政府开展人象冲突有效治理提供决策参考,促进区域人象和谐共生。【方法】以云南省西双版纳州亚洲象分布区为研究区域,基于选择实验法设计由补偿标准提高、修建栅栏、种植结构调... 详细信息

【目的】厘清影响农户选择人象冲突治理措施的关键因素,为政府开展人象冲突有效治理提供决策参考,促进区域人象和谐共生。【方法】以云南省西双版纳州亚洲象分布区为研究区域,基于选择实验法设计由补偿标准提高、修建栅栏、种植结构调整、转移问题象和移民搬迁5种治理措施组成的选择集,采用混合回归模型对实地调查收集的472位农户数据进行估算,分析农户选择人象冲突治理措施的关键因素。【结果】1)农户倾向的治理措施依次为亚洲象肇事补偿80%(0.99)、转移问题象(0.97)、种植结构调整(0.96)、修建栅栏(0.45);2)收入水平存在差异的农户对补偿标准提高、转移问题象和种植结构调整具有较高选择倾向;3)与补偿标准提高、设置栅栏、种植结构调整、转移问题象和移民搬迁组成的治理措施相比,维持现状(ASC)变量系数显著为正,表明农户倾向于整体上维持现有治理措施;4)相对于治理工作具有正向偏好的农户而言,劳动力数量、不信仰宗教的人数以及感知到人象冲突存在的农户倾向选择改进后的治理措施。【结论】农户对政府制定的治理措施表现出较高选择倾向,但移民搬迁是农户最不愿意选择的治理措施,需要关注农户对人象冲突治理措施的选择偏好以优化治理工作,构建由补偿标准提高、问题象转移、修建栅栏等多种措施组成的新型治理模式,优先为家庭劳动力多和受亚洲象肇事影响严重的农户提供治理工作参与机会。

关键词：亚洲象保护野生动物肇事混合回归模型治理措施选择实验

Extracellular vesicles from human urine-derived stem cells delay aging through the transfer of PLAU and TIMP1

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1166-1186页

作者： Shanshan Rao Zehui He Zun Wang Hao Yin Xiongke Hu Yijuan Tan Tengfei Wan Hao Zhu Yi Luo Xin Wang Hongming Li Zhenxing Wang Xinyue Hu Chungu Hong Yiyi Wang Mingjie Luo Wei Du yuxuan Qian Siyuan Tang Hui xie Chunyuan Chen Department of Orthopedics Movement System Injury and Repair Research CenterXiangya HospitalCentral South UniversityChangsha 410008China Hunan Key Laboratory of Angmedicine Changsha 410008China Xiangya School of Nursing Central South UniversityChangsha 410013China Department of Pediatric Orthopedics Hunan Children’s HospitalUniversity of South ChinaChangsha 410007China Department of Respiratory Medicine Xiangya HospitalCentral South UniversityChangsha 410008China School of Nursing Xinjiang Medical UniversityUrumqiXinjiang 830000China Department of Rehabilitation Xiangya HospitalCentral South UniversityChangsha 410008China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangsha 410008China

Aging increases the risks of various diseases and the vulnerability to *** senescence is a hallmark of aging that contributes greatly to aging and aging-related *** study demonstrates that extracellular vesicles from human urine-derived stem cells(USC-EVs)efficiently inhibit cellular senescence in vitro and in *** intravenous injection of USC-EVs improves cognitive function,increases physical fitness and bone quality,and alleviates aging-related structural changes in different organs of senescence-accelerated mice and natural aging *** anti-aging effects of USC-EVs are not obviously affected by the USC donors’ages,genders,or health *** analysis reveals that USC-EVs are enriched with plasminogen activator urokinase(PLAU)and tissue inhibitor of metalloproteinases 1(TIMP1).These two proteins contribute importantly to the anti-senescent effects of USC-EVs associated with the inhibition of matrix metalloproteinases,cyclin-dependent kinase inhibitor 2A(P16INK4a),and cyclin-dependent kinase inhibitor 1A(P21cip1).These findings suggest a great potential of autologous USC-EVs as a promising anti-aging agent by transferring PLAU and TIMP1 proteins.

关键词： Extracellular vesicles Urine-derived stem cells Cellular senescence Anti-aging PLAU TIMP1 Senescence-accelerated mice Natural aging mice