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Near-infrared light-controllable bufalin delivery from a black phosphorus-hybrid supramolecular hydrogel for synergistic photothermal-chemo tumor therapy

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Nano Research 2021年第11期14卷 3988-3998页

作者： Jiaqi He Guoqin Chen Peng Zhao Caiwen ou Cardiology Department of Panyu Central Hospital Guangzhou University of Chinese MedicineGuangzhou510006China Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China Guangdong Provincial Key Laboratory of Shock and Microcirculation Zhujiang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510280China

Bufalin is efficacious in treating various tumors, however, the clinical application of which is restricted by the myocardial toxicity. Developing a smart synergetic delivery system is widely considered as a promising therapeutic strategy. To address this issue, a black phosphorus hybrid polypeptides hydrogel was designed to highly load bufalin, and achieved near-infrared (NIR)-controllable drug release with synergistic photothermal-chemo therapeutic effect. Black phosphorus nanosheets (BPNSs) and bufalin were co-loaded in temperature-sensitive supramolecular hydrogel to receive smart hybridization (BP-bufalin@SH). With NIR irradiation (1 W·cm−2), BP-bufalin@SH exhibited a rapid and large temperature increase and released bufalin via light-controllable manner, with which the side effects of bufalin were greatly decreased. Combined with photothermal-chemo therapeutic effect, BP-bufalin@SH could collapse the mitochondrial transmembrane potential resulting in the irreversible apoptosis of tumor cells, and realize a highly efficient in vivo tumor elimination with good biosafety and biocompatibility. This work provides a new hydrogel platform for controlling bufalin release, and thus further promotes the practical application on antitumor therapy.

关键词： photothermal-chemo synergic therapy bufalin black phosphorus nanosheets supramolecular hydrogel

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Quasi-two-dimensional bismuth oxychalcogenide nanoflakes as novel anode for potassium-ion batteries

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Rare Metals 2022年第8期41卷 2567-2574页

作者： Shao-Jun Fang Peng Du Jia-Feng Zhang Chun-Hui Wang Zhi-Ming Xiao Bao Zhang Liang Cao xin-Ming Fan xing ou School of Metallurgy and Environment Central South UniversityChangsha410083China

Potassium-ion batteries(PlBs)are considered as the promising alternative of lithium-ion batteries,due to their abundance natural resources,high cost-effectiveness,and similar working *** the development of PIBs,due to the larger ionic radius of potassium compared to that of lithium,the urgent demand of suitable anode materials with steady structure and fast carrier diffusion is of primary importance.

关键词： lithium potassium radius

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Stabilization Parametric Region of Distributed PID Controllers for General First-Order Multi-Agent Systems With Time Delay

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IEEE/CAA Journal of Automatica Sinica 2020年第6期7卷 1555-1564页

作者： xinyi Yu Fan Yang Chao Zou Linlin ou Department of Automation Zhejiang University of TechnologyHangzhou 310023China

The stabilization problem of distributed proportional-integral-derivative(PID)controllers for general first-order multi-agent systems with time delay is investigated in the *** closed-loop multi-input multi-output(MIMO)framework in frequency domain is firstly introduced for the multi-agent *** on the matrix theory,the whole system is decoupled into several subsystems with respect to the eigenvalues of the Laplacian *** that the eigenvalues may be complex numbers,the consensus problem of the multi-agent system is transformed into the stabilizing problem of all the subsystems with complex *** each subsystem with complex coefficients,the range of admissible proportional gains is analytically ***,the stabilizing region in the space of integral gain and derivative gain for a given proportional gain value is also obtained in an analytical *** entire stabilizing set can be determined by sweeping proportional gain in the allowable *** proposed method is conducted for general first-order multi-agent systems under arbitrary topology including undirected and directed graph ***,the results in the paper provide the basis for the design of distributed PID controllers satisfying different performance *** simulation examples are presented to check the validity of the proposed control strategy.

关键词： Consensus frequency domain multi-agent systems stability time delay

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Entangled photons enabled ultrafast stimulated Raman spectroscopy for molecular dynamics

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Light(Science & Applications) 2024年第8期13卷 1615-1622页

作者： Jiahao Joel Fan Zhe-Yu ou Zhedong Zhang Department of Physics City University of Hong KongKowloonHong Kong SARChina City University of Hong Kong Shenzhen Research InstituteShenzhenGuangdongChina

Quantum entanglement has emerged as a great resource for studying the interactions between molecules and *** propose a new scheme of stimulated Raman scattering with entangled photons.A quantum ultrafast Raman spectroscopy is developed for condensed-phase molecules,to monitor the exciton populations and *** results are obtained,showing an entanglement-enabled time-frequency scale not attainable by classical *** Raman signal presents an unprecedented selectivity of molecular correlation functions,as a result of the Hong-ou-Mandel *** work suggests a new paradigm of using an unconventional interferometer as part of spectroscopy,with the potential to unveil advanced information about complex materials.

关键词： materials spectroscopy selectivity

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Preparation and properties of bifunctional Gd_(2)O_(3)/GQD composite nanoparticles

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Journal of Rare Earths 2022年第7期40卷 1118-1125页

作者： Chengjie Xu Meigui ou Hao Zhou Chunlin Yang College of Materials and Metallurgy University of GuizhouGuiyang 550025China National Local Co-construction Engineering Laboratory for High Performance Metal Structure Material and Manufacture Technology Guiyang 550025China College of Chemistry and Materials Engineering Guiyang UniversityGuiyang 550003China

Nanocomposites of graphene quantum dots(GQDs)modified gadolinium oxide(Gd_(2)O_(3))particles were successfully *** addition,the effects of the amount of GQDs and the particle size of Gd_(2)O_(3)on the properties of nanocomposites were *** structures and properties of nanoparticles were characterized by X-ray diffraction,X-ray photoelectron spectroscopy,Fourier transform infrared spectroscopy,field emission scanning electron microscopy,transmission electron microscopy,photoluminescence spectrometry,and magnetic resonance *** results show that the synthesized particles Gd_(2)O_(3)/GQD are spherical with a diameter of approximately 40 nm and have excellent fluorescence and magnetic property,and its relaxation rate(r_(1)=25.18(mmol/L)^(-1)/s)is higher than that of the typical commercial contrast agents Gd-DTPA(r_(1)=4.5(mmol/L)^(-1)/s),The fluorescence property of Gd_(2)O_(3)/GQD is optimized by varying the V_(GQDs):V_(Gd2O3)ratio,and 1:1 ratio of V_(GQDs):V_(Gd2O3)results in the best fluorescence *** large particles of Gd_(2)O_(3)improve the relaxation property of ***,the nanocomposites Gd_(2)O_(3)/GQD with magnetic and fluorescence characteristics can be used in biological imaging,drug targeting,and in-vivo diagnostic analysis.

关键词： Gd_(2)O_(3)/GQD Magnetic Fluorescence Magnetic resonance imaging(MRI) Rare earths

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Structural geometrical analysis and simulation of decollement growth folds in piedmont Fauqi Anticline of Zagros Mountains, Iraq

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Science China Earth Sciences 2016年第9期59卷 1885-1898页

作者： ou ChengHua CHEN Wei LI ChaoChun ZHou WenJiang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University State-owned Asset Management Office Southwest Petroleum University Zhundong Oil Production Plant Xinjiang Oilfield Company

This study carried out detailed structural analyses of the plane structural deformation pattern and sectional structural deformation styles of the Fauqi Anticline by the 3D seismic section with full cover collection, and carried out the kinematical simulation of the Fauqi anticlinal deep decollement coupling shallow growth folds and faults based on the fault decollement fold model and the forward balanced geological section technique. The study subsequently evaluated the differentiated petroleum enrichment mechanism of the Fauqi Anticline by utilizing the results of the structural analysis and combining the spatial-temporal relationship analysis of the source, the reservoir, and the caprock. The results showed that the differentiated plane structural deformation pattern and hierarchical sectional structural deformation style were developed by the superposed coupling of deep decollement, syntectonic sedimentation of shallow growth strata, and the compression of the south-west horizontal tectonic stress from the Zagros Mountains. It was found that the differentiated structural deformation caused the differentiated enrichment of petroleum in the Fauqi Anticline. It was also found that the horizontal slip distance of the Fauqi Anticlinal Folds reached around 3.5 km by the simulation of deep decollement coupling the movement of the shallow growth folds and the faults.

关键词： Fauqi Anticline Decollement Growth fold Geometrical analysis of structures Kinematical simulation Petroleum enrichment Zagros Mountains

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LQR Control for Homogeneous Agents with Multi-graph Topology

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自动化学报 2013年第6期39卷 913-919页

作者： ZHANG Dong-Mei ou Lin-Lin MENG Li WANG xin-Gang College of Science Zhejiang University of Technology Hangzhou310023 China College of Information Engineering ZhejiangUniversity of Technology Hangzhou 310023 China

我们与将军一起考虑一套多代理人系统(质量) 线性时间不变(LTI ) 动力学和性能索引联合系统的行为的一个控制问题。在代理人之间的互联拓扑学与自我环作为一台未受指导的小型旋转式印刷机被建模，在每个系统是一个节点，在每个节点的控... 详细信息

我们与将军一起考虑一套多代理人系统(质量) 线性时间不变(LTI ) 动力学和性能索引联合系统的行为的一个控制问题。在代理人之间的互联拓扑学与自我环作为一台未受指导的小型旋转式印刷机被建模，在每个系统是一个节点，在每个节点的控制行动是它的状态的功能和它的邻居的状态的地方。在这份报纸考虑的线性二次的管理者(LQR ) 控制问题能在反馈获得上由于块对角线限制被认为是一个结构优化问题。它被看那在最小化一个单个代理人系统的和性能的分布式的控制器平等者下面最小化多代理人系统的 LQR 性能限制。一个足够的条件以一套线性矩阵不平等(LMI ) 被介绍完成某些非最优的表演说明。除了使控制设计更适用， LQR 表演区域的观点被介绍并且分析，它被显示关于拉普拉斯算符矩阵的特征值凸。多代理人系统的 LQR 控制然后被变换成一套分系统的 LQR 控制，它作为系数与最小、最大的特征值合并二仅仅不平等限制。数字例子被举说明建议方法。

关键词： LQR控制多代理系统图拓扑线性矩阵不等式线性时不变最大特征值性能指标分布式控制器

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Facile Preparation of NiO@graphene Nanocomposite with Superior Performances as Anode for Li-ion Batteries

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Acta Metallurgica Sinica(English Letters) 2022年第2期35卷 212-222页

作者： Junke ou Shugen Wu Lin Yang Hao Wang Institute for Advanced Study Chengdu UniversityChengdu 610106China Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science and EngineeringZigong 643000China Zhanglan Honors College Chengdu UniversityChengdu 610106China School of Medicine Chengdu UniversityChengdu 610106China School of Mechanical Engineering Chengdu UniversityChengdu 610106China

Transition metal oxides gain considerable research attentions as potential anode materials for lithium ion batteries,but their applications are hindered due to their poor electronic conductivity,weak cycle stability and drastic volume ***,a NiO@graphene composite with a unique 3D conductive network structure is prepared through a simple *** applied as anode material for Li-ion batteries,at 50 mA g^(−1),the NiO@graphene displays a high reversible capacity of 1366 mAh g^(−1) and a stable cyclability of 205 mAh g^(−1) after 500 *** at a high rate of 10 A g^(−1),it displays a favorable reversible capacity of 711 mAh g^(−1).Remarkably,when it recovers back to 0.05 A g^(−1),a reversible capacity of 1741 mAh g^(−1) is ***,the NiO@graphene composite with 3D structure shows good application prospects as an alternative anode for advanced lithium ion batteries.

关键词： Lithium ion batteries 3D conductive network structure NiO@graphene composite Alternative

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Substructure isolation and damage identification using free responses

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Science China(Technological Sciences) 2014年第9期57卷 1698-1706页

作者： Hou JiLin JANKOWSKI Lukasz ou JinPing School of Civil Engineering Dalian University of Technology Smart-Tech Centre Institute of Fundamental Technological Research Polish Academy of Sciences School of Civil Engineering Harbin Institute of Technology

Structural health monitoring （SHM） has become a hot and intensively researched field in civil engineering. Thereinto, damage identification play an important role in maintaining structural integrity and safety. Many effective methods have been proposed for damage identification. However, accurate global identification of large real-world structures is not easy due to their com- plex and often unknown boundary conditions, nonlinear components, insensitivity of glohal response to localized damages, etc. Furthermore, global identification often requires lots of sensors and involves large number of unknowns. This is costly, rarely feasible in practice, and usually yields severely ill-conditioned identification problems. Substructuring approach is a possible solution： substructuring methods can focus on local small substructures; they need only a few sensors placed on the substruc- ture and yield smaller and numerically much more feasible identification problems. This paper proposed an improved sub- structure method using local free response for substructure damage identification. The virtual supports are constructed by Sub- structure Isolation Method （SIM） using the linear combination of the substructural responses. The influence of the global errors is isolated by adding the virtual supports on the main degree of freedoms （DOFs） of the substructure. Through the correlation analysis, the substructural modes are selected and used for damage identification of the substructure. A plain model of cable stayed bridge is used for the verification of the proposed method.

关键词： structural health monitoring (SHM) damage identification substructure cable stayed bridge free response

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Production of high-energy neutron beam from deuteron breakup

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Nuclear Science and Techniques 2022年第7期33卷 125-132页

作者： Ren-Sheng Wang Li ou Zhi-Gang Xiao School of Radiation Medicine and Protection Medical College of Soochow UniversitySuzhou215123China Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Suzhou215123China College of Physics and Technology Guangxi Key Laboratory of Nuclear Physics and TechnologyGuangxi Normal UniversityGuilin541004China Department of Physics Tsinghua UniversityBeijing100084China

The deuteron breakup on heavy targets has been investigated in the framework of an improved quantum molecular dynamics model,focusing on the production of neutrons near zero *** experimental differential cross sections of neutron production in the 102 MeV d+C reactions were reproduced by *** on the consistency between the model prediction and experiment,the feasibility of producing a neutron beam through the breakup of deuteron on a carbon target was *** of the nucleon Fermi motion inside the deuteron,the energy spectrum of the inclusive neutron near 0°in the laboratory exhibits considerable energy broadening in the main peak,whereas the long tail on the low-energy side is *** coincidentally measuring the accompanying deuteron breakup proton,the energy of the neutron can be tagged with an intrinsic uncertainty of approximately 5%(1σ).The tagging efficiency of the accompanying proton on the forward-emitted neutron can reach 90%,which ensures that the differential cross section in the(d,np)channel remains two orders higher than that in(p,n)after considering the measurement of accompanying *** enables the application of a well-defined energy neutron beam in an event-by-event scheme.

关键词： Deuteron breakup Monochromatic neutron High energy Quantum molecular dynamics

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