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Langmuir-Blodgett Films with Bilayer Alternation of Hemicyanine Dye and Cadmium stearate

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Chinese Physics Letters 1991年第11期8卷 603-606页

作者： j.Y.Fang Z.M.sun s.j.xiao Z.H.Lu Y.Wei P.stroeve Laboratory of Molecular and Biomolecular Electronics Southeast UniversityNanjing 210018 Laboratory of solid state Microstructures Nanjing UniversityNanjing 210008 Department of Chemical Engineering University of CsdiforniaDavlsCA 95616U.S.A

Multilayers consisting of bilayer alternation of hemicyanine dye and cadmium stearate have been prepared by the Langmuir-Blodgett technique.x-ray diffraction and optical absorption spectra are used to characterixe thleir periodic structures and optical *** results show that a well ordered superlattice is produced and the hemicyanine dye is in non-aggregated formation in the alternating multilayers.

关键词： properties technique cyanine

MUTUAL INFORMATION BAsED 3D NON-RIGID REGIsTRATION OF CT/MR ABDOMEN IMAGEs

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journal of shanghai jiaotong university(science) 2001年第2期6卷 171-175页

作者：胡海波刘聚卑 CHARLIE s.j.xiao 庄天戈 Dept. of Biomedical Eng. Shanghai Jiaotong Univ. jockey Club Rehabilitation Eng. Centre Hong Kong Polytechnic Univ

A mutual information based 3D non-rigid registration approach was proposed for the registration of deformable CT/MR body abdomen images. The Parzen Windows Density Estimation (PWDE) method is adopted to calculate the mutual information between the two modals of CT and MRI abdomen images. By maximizing MI between the CT and MR volume images, the overlapping part of them reaches the biggest, which means that the two body images of CT and MR matches best to each other. Visible Human Project (VHP) Male abdomen CT and MRI Data are used as experimental data sets. The experimental results indicate that this approach of non-rigid 3D registration of CT/MR body abdominal images can be achieved effectively and automatically, without any prior processing procedures such as segmentation and feature extraction, but has a main drawback of very long computation time.

关键词： medical image registration multi-modality mutual information non-rigid Parzen window density estimation

Tumor inflammation-specific self-amplifying fluorescent molecular probes induce an anti-tumor immune response

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science China Chemistry 2025年第1期68卷 273-287页

作者： shuguang Yang Lijun Hu Hong xiao Zecong xiao Xintao shuai PCFM Lab of Ministry of Education School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Nanomedicine Research Center The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China Department of Medical Ultrasound The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China Department of Ultrasound The Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai 519000China

Enhancing the concentration of exogenous molecular drugs within the tumor microenvironment through enzyme-catalyzed polymerization presents a novel strategy for cancer ***,the optimization of the catalytic efficiency is often impeded by the inefficient expression of ***,we reported a self-amplifying fluorescent molecular probe,Bis-HTPICG,for photodynamic therapy(PDT)and subsequent PDT-induced *** Bis-HTP-ICG probe possesses a noticeable enzyme-catalyzed polymerization facilitated by myeloperoxidase(MPO),a crucial enzyme secreted by neutrophils at inflammation *** exposure to laser irradiation,Bis-HTP-ICG showed a high PDT efficacy,inducing an acute inflammatory response that stimulates further recruitment of neutrophils and then elevated MPO *** heightened level of MPO enhances the accumulation of the Bis-HTP-ICG via self-polymerization or binding with intratumoral proteins following MPO enzyme catalysis,instigating a self-amplifying chain reaction cycle involving Bis-HTP-ICG,neutrophils and ***,PDT efficiently incites immunogenic cell death(ICD)in tumor cells,initiating an anti-tumor immune response including dendritic cells(DCs)maturation,T cell proliferation and reprogramming of tumor-associated neutrophils(TANs).This work portrays a promising strategy for self-amplification of fluorescent molecular probes through adjustable enzyme levels,potentially offering a unique avenue to enhance the tumor accumulation of molecular drugs for improved tumor therapy.

关键词： fluorescent molecular probes self-amplifying myeloperoxidase photodynamic therapy

Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng song Ihar Razanau juanxiu xiao Wei xiao Di Hu Guoxiong Wang College of Chemistry and Molecular sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina state Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of BelarusMinsk 220072Belarus state Key Laboratory of Marine Resources Utilization in south China sea Collaborative Innovation Center of Marine Science and TechnologySchool of Marine Science and EngineeringHainan UniversityHaikou 570228HainanChina Department of Chemical and Environmental Engineering University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina

Methane, an abundant one-carbon(C_(1)) resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO_(2)emissions and coke deposition. Electrochemical conversion of methane(ECM) using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO_(2)emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

Biomaterial‑based mechanical regulation facilitates scarless wound healing with functional skin appendage regeneration

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Military Medical Research 2025年第1期12卷 96-120页

作者： Ying-Ying Li shuai-Fei ji xiao-Bing Fu Yu-Feng jiang xiao-Yan sun Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department Chinese PLA General Hospital and PLA Medical CollegePLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin InjuryRepair and RegenerationResearch Unit of Trauma CareTissue Repair and RegenerationChinese Academy of Medical Sciences2019RU051Beijing 100048China Research Unit of Trauma Care Tissue Repair and RegenerationChinese Academy of Medical Sciences2019RU051Beijing 100048China 2Department of Tissue Regeneration and Wound RepairChinese PLA General HospitalBeijing 100853China

scar formation resulting from burns or severe trauma can significantly compromise the structural integrity of skin and lead to permanent loss of skin appendages,ultimately impairing its normal physiological *** evidence underscores the potential of targeted modulation of mechanical cues to enhance skin regeneration,promoting scarless repair by influencing the extracellular microenvironment and driving the phenotypic *** field of skin repair and skin appendage regeneration has witnessed remarkable advancements in the utilization of biomaterials with distinct physical ***,a comprehensive understanding of the underlying mechanisms remains somewhat elusive,limiting the broader application of these *** this review,we present two promising biomaterial-based mechanical approaches aimed at bolstering the regenerative capacity of compromised *** first approach involves leveraging biomaterials with specific biophysical properties to create an optimal scarless environment that supports cellular activities essential for *** second approach centers on harnessing mechanical forces exerted by biomaterials to enhance cellular plasticity,facilitating efficient cellular reprogramming and,consequently,promoting the regeneration of skin *** summary,the manipulation of mechanical cues using biomaterial-based strategies holds significant promise as a supplementary approach for achieving scarless wound healing,coupled with the restoration of multiple skin appendage functions.

关键词： scarless Wound healing Biomaterials Mechanical cues skin appendages

Benchmarking model chemistry composite calculations for vertical ionization potential of molecular systems

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Chinese Chemical Letters 2025年第02期36卷 536-539页

作者： Bingwei Wang Yihong Ding xiao Tian Key Laboratory of Carbon Materials of Zhejiang Province Wenzhou Key Lab of Advanced Energy Storage and Conversion Zhejiang Province Key Lab of Leather Engineering College of Chemistry and Materials Engineering Wenzhou University Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University school of Mathematics and science Hebei GEO University

In chemical science, the vertical ionization potential(VIP) is a crucial metric for understanding the electronegativity, hardness and softness of chemical material systems as well as the electronic structure and stability of molecules. Ever since the last century, the model chemistry composite methods have witnessed tremendous developments in computing the thermodynamic properties as well as the barrier heights. However, their performance in realm of the vertical electron processes of molecular systems has been rarely explored. In this study, we for the first time benchmarked the model chemistry composite methods(e.g., CBs-QB3, G4 and W1BD) in comparison with the commonly used Koopmans' s theorem(KT), electron propagator theory(e.g., OVGF, D2, P3 and P3+) and CCsD(T) methods in calculating the VIP for up to 613 molecular systems with available experimental measurements. The large-scale test calculations strongly showed that the CBs-QB3 model chemistry composite technique can be well recommended to calculate VIP from the perspectives of accuracy, economy and applicability. Notably, the VIP values of up to 7 molecules were identified to have the absolute errors of larger than 0.3 e V at all calculation levels,which have strong hints that their VIP experimental values should be re-investigated.

关键词： CBs-QB3 Composite methods Model chemistry Molecular systems Vertical ionization potential

Perspectives on additive manufacturing for warhead applications

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Defence Technology(防务技术) 2025年第1期43卷 225-251页

作者： Hao Xue Qiang Zhou Chuan xiao Guangyan Huang state Key Laboratory of Explosion science and Technology Beijing Institute of TechnologyBeijing 100081China Ordnance science and Research Academy of China Beijing 100089China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China

According to different damage modes,warheads are roughly divided into three types:fragmentation warheads,shaped charge warheads,and penetrating *** to limitations in material and structural manufacturing,traditional manufacturing methods make it difficult to fully utilize the damage ability of the *** manufacturing(AM)technology can fabricate complex structures,with classified materials composition and customized components,while achieving low cost,high accuracy,and rapid production of the *** maturity of AM technology has brought about a new round of revolution in the field of *** this paper,we first review the principles,classifications,and characteristics of different AM *** development trends of AM technologies are pointed out,including multi-material AM technology,hybrid AM technology,and smart AM *** our survey,PBF,DED,and EBM technologies are mainly used to manufacture warhead damage *** and DIW technologies are mainly used to manufacture warhead ***,the research on the application of AM technology in three types of warhead and warhead charges was reviewed and the existing problems and progress of AM technologies in each warhead were ***,we summarized the typical applications and look forward to the application prospects of AM technology in the field of warheads.

关键词： Additive manufacturing Fragmentation warhead shaped charge warhead Penetrating warhead Warhead charge

Relative humidity-dependent evolution of molecular composition ofα-pinene secondary organic aerosol upon heterogeneous oxidation by hydroxyl radicals

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journal of Environmental sciences 2025年第2期148卷 210-220页

作者： Wei Wang Chenxi Li Huayun xiao Ziyue Li Yue Zhao school of Environmental science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Heterogeneous oxidation by gas-phase oxidants is an important chemical transformation pathway of secondary organic aerosol(sOA)and plays an important role in controlling the abundance,properties,as well as climate and health impacts of ***,our knowledge on this heterogeneous chemistry remains *** this study,the heterogeneous oxidation ofα-pinene ozonolysis sOA by hydroxyl(OH)radicals was investigated under both low and high relative humidity(RH)conditions,with an emphasis on the evolution of molecular composition of sOA and its RH *** is found that the heterogeneous oxidation of sOA at an OH exposure level equivalent to 12 hr of atmospheric aging leads to particle mass loss of 60%at 25%RH and 95%at 90%*** heterogeneous oxidation strongly changes the molecular composition of *** dimer-to-monomer signal ratios increase dramatically with rising OH exposure,in particular under high RH conditions,suggesting that aerosol water stimulates the reaction of monomers with OH radicals more than that of *** addition,the typical sOA tracer compounds such as pinic acid,pinonic acid,hydroxy pinonic acid and dimer esters(e.g.,C17H26O8 and C19H28O7)have lifetimes of several hours against heterogeneous OH oxidation under typical atmospheric conditions,which highlights the need for the consideration of their heterogeneous loss in the estimation of monoterpene sOA concentrations using tracer-based *** study sheds lights on the heterogeneous oxidation chemistry ofmonoterpene sOA andwould help to understand their evolution and impacts in the atmosphere.

关键词： secondary organic aerosol(sOA) Heterogeneous oxidation Chemical transformation Molecular composition Aerosol water

Phase transition in modified thermodynamics of Kerr-Ads black holes

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Chinese Physics C 2025年第1期49卷 350-358页

作者： Qin Liu xiaoning Wu xiao Zhang school of Physical science and Technology Guangxi UniversityNanning 530004China Guangxi Center for Mathematical Research Guangxi UniversityNanning 530004China Institute of Mathematics Academy of Mathematics and Systems Science and Hua Loo-Keng LaboratoryChinese Academy of SciencesBeijing 100190China school of Mathematical sciences University of Chinese Academy of SciencesBeijing 100049China

In this study,we investigate the critical phenomena of Kerr-Ads black holes under the modified first law of ***,we considered modified black hole thermodynamics that exhibit a van der Waalslike phase *** critical exponents were calculated,and then,a swallowtail diagram of free energy was *** with existing results,the main difference is the correspondence between the thermal quantities of Kerr-Ads black holes and the van der Waals *** a previous study[***,***,and ***,***.D 85044005(2012)],the correspondence was(Ω_(H),j)→(V,P),while in our study,the correspondence was(j,Ω_(H))→(V,P).This difference was owing to the rotating *** modified black hole thermodynamics were associated with rotating *** free energy in such a reference contains extra rotating energy,which induces a Legendre transformation in the(Ω_(H),j)cross-section,causing the difference in correspondence.

关键词： Kerr-Ads black hole black hole thermodynamics phase transition of black hole