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A Glycosylated and Catechol-crosslinkedε-Polylysine Hydrogel:Simple Preparation and Excellent Wound Hemostasis and Healing Properties

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Chinese Journal of Polymer Science 2022年第9期40卷 1110-1119页

作者： Lin Teng Zheng-Wei Shao yu-Shi He jia-yu lu De-Rong Zou Chuan-Liang Feng Chang-Ming Dong School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China Department of Stomatology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai Jiao Tong UniversityShanghai 200233China School of Chemistry and Chemical Engineering Shanghai Electrochemical Energy Devices Research CenterShanghai Jiao Tong UniversityShanghai 200240China School of Materials Science and Engineering State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China

Commercial tissue adhesives have been widely applied in wound hemostats and dressings while enhancing the hemostasis and healing capabilities is challenging to meet clinical ***,we designed the glucose-and catechol-functionalized derivatives from commercialε-polylysine(EPL)and prepared the hydrogels by simple amidation and catechol-crosslinking reactions,which have larger swelling ratios of 220%–240%,suitable microporous size of about 6–8µm,and tissue adhesion strength of about 20–40 *** hemolysis,cytotoxicity,and cellular double-staining assays indicate that those hydrogels had good biocompatibility and the H-3 hydrogel with higher glucose content gave a lower hemolysis ratio of 0.73%±0.14%.The blood-clotting index,blood cell attachment and adhesion studies showed those hydrogels had fast blood-coagulation,resulting in excellent hemostasis performance with a short hemostatic time of 38–46 s and less blood loss of 19%–34%in a liver hemorrhage model.A full-thickness rat-skin defect model further demonstrates that the H-3 hydrogel achieved fast wound healing with a wound closure of 70.0%±2.7%on postoperative day 7 and nearly full closure on day ***,the hydroproline level that denotes the collagen production reached a higher one of 7.24±0.55µg/mg comparable to that in normal skins on day 14,evidencing the wound healing was close to completion in the H-3 ***,this work provides a simple method to construct a glycosylated and catechol-functionalized hydrogel platform from commercial EPL,holding translational potentials in wound hemostats and dressings.

关键词： Polylysine hydrogel Glycosylation Mussel-mimetic Hemostasis Wound dressing

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碳中和背景下中国交通部门低碳发展转型路径

中国环境科学 2023年第6期43卷 3231-3243页

作者：贾璐宇王克重庆理工大学会计学院重庆400054 中国人民大学环境学院北京100872

基于LEAP构建中国交通部门碳减排模型(CERM-CT),包含4类228种减排技术和措施,设计基准、碳减排和深度碳减排3组情景,分析了交通部门背后的驱动因子和服务需求,并对技术措施进行了成本有效性分析,提出了中国交通部门低碳发展转型路径.结... 详细信息

基于LEAP构建中国交通部门碳减排模型(CERM-CT),包含4类228种减排技术和措施,设计基准、碳减排和深度碳减排3组情景,分析了交通部门背后的驱动因子和服务需求,并对技术措施进行了成本有效性分析,提出了中国交通部门低碳发展转型路径.结果表明,降低车辆能耗和发展新能源汽车较为成本有效,运输结构调整碳减排潜力大.碳减排情景下,交通部门长期碳排放2050年下降至4.4亿t,相比基准情景减排69.7%,较基准年碳排放减少3.3亿t,有望在2060~2070年间实现碳中和.深度碳减排情景下,交通部门2050年碳排放下降至1.9亿t,相比基准情景和碳减排情景分别减排86.9%和56.9%,较基准年和碳减排情景分别减少碳排放5.8亿t和2.5亿t,有望在2060年前实现碳中和.不断提高燃油经济性、大力推广新能源汽车、控制机动车保有量和调整交通运输结构是交通部门实现低碳发展转型的必要减排手段,分别能带来25.0%、16.7%、8.3%和50.0%的减排量.深度碳减排情景下2021~2030年和2031~2050年的低碳交通新增固定投资分别为4.2万亿和6.3万亿,平均每年0.4万亿,主要用于新建基础设施投资、终端用能设备改造、低碳技术研发等,其中新建基础设施投资占较大比例,均超过两个时间段总投资的80%.中国交通部门实现低碳发展转型需不断优化运输结构,支持新能源汽车的发展,研发低碳技术,加大对低碳基础设施和技术的投资力度.

关键词：交通部门 LEAP模型低碳发展转型路径情景分析成本有效性分析

A 2-year step-down withdrawal from inhaled corticosteroids in asthmatic children receiving immunotherapy

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World Journal of Pediatrics 2017年第6期13卷 560-565页

作者： Chun-Hui He Xing Li Jun-Hong Lin Qiang Xiao jia-lu yu Ying-Fen Liu Wen-Hui jiang Chen Chen Li Deng Jie Zhou Department of Respiration.Guangzhou Women and Children’s Medical Center Guangzhou Medical UniversityGuangzhouChina Institute of Human Virology Zhongshan School of Medicine.Sun Yat-Sen UniversityGuangzhouChina Department of Medical Oncology and Guangdong Key Laboratory of Liver Disease Research.The Third Affiliated Hospital of Sun Yat—sen University Guangzhou.China

Background:Inhaled corticosteroids (ICSs) for treating asthma are controversial because of their negative effects on the growth of asthmatic children and without clearly defined withdrawal strategy.A 2-year ICS step-down and withdrawal strategy has been developed for asthmatic children receiving 3-year subcutaneous immunotherapy (SCIT).Methods:Eleven children were included into the SCIT group and 13 children into the ICS *** were discontinued when children met the following criteria:requiring only 1 puff per day,with good control,for at least 6 months;having a forced expiratory volume in 1 second (FEV1)/forced vital capacity ≥80%;and SCIT discontinued for ≥24 *** main endpoints were the results of both the childhood asthma control test (C-CAT) and the methacholine bronchial provocation ***:In the SCIT group,all the 11 children had ICS discontinued,with one child developed asthma attack after pneumonia and received ICS again after completion of *** the ICS group,five children discontinued ICS and developed asthma attacks later and received ICS again;the other eight children developed severe symptoms during ICS ***,the discontinuation of ICS was only achieved in the SCIT *** dose of methacholine that caused a decrease of 20% in FEV1 continued to improve after discontinuation of ICS for the SCIT group and presented better results than the ICS group (P=-0.050).After completion of SCIT,the C-CAT had improved significantly after 30 months of treatment compared with the ICS group (Plusion:In the present study,we developed a 2-year step-down and withdrawal strategy from ICSs strategy for allergic asthma children receiving SCIT;the strategy was efficacious and safe.

关键词： allergy asthma immunotherapy inhaled corticosteroid

Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： jia Zhao Taixi Feng Guimin lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

Recent Strategies and Advances in Hydrogel‑Based Delivery Platforms for Bone Regeneration

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Nano-Micro Letters 2025年第3期17卷 389-439页

作者： Xiao Wang jia Zeng Donglin Gan Kun Ling Mingfang He jianshu Li Yongping lu Scientific and Technological Innovation Center for Biomedical Materials and Clinical Research Guangyuan Key Laboratory of Multifunctional Medical HydrogelGuangyuan Central HospitalGuangyuan 628000People’s Republic of China jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Bio‑Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023People’s Republic of China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065People’s Republic of China

Bioactive molecules have shown great promise for effectively regulating various bone formation processes,rendering them attractive therapeutics for bone ***,the widespread application of bioactive molecules is limited by their low accumulation and short half-lives in *** have emerged as ideal carriers to address these challenges,offering the potential to prolong retention times at lesion sites,extend half-lives in vivo and mitigate side effects,avoid burst release,and promote adsorption under physiological *** review systematically summarizes the recent advances in the development of bioactive molecule-loaded hydrogels for bone regeneration,encompassing applications in cranial defect repair,femoral defect repair,periodontal bone regeneration,and bone regeneration with underlying ***,this review discusses the current strategies aimed at improving the release profiles of bioactive molecules through stimuli-responsive delivery,carrier-assisted delivery,and sequential ***,this review elucidates the existing challenges and future directions of hydrogel encapsulated bioactive molecules in the field of bone regeneration.

关键词： Hydrogel Bone regeneration Bioactive molecules Drug delivery Nano-/microscale carriers

Ideal Bi‑Based Hybrid Anode Material for Ultrafast Charging of Sodium‑Ion Batteries at Extremely Low Temperatures

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Nano-Micro Letters 2025年第3期17卷 152-167页

作者： Jie Bai jian Hui jia yu Wang Chun Cheng Yang Qing jiang Key Laboratory of Automobile Materials(Jilin University) Ministry of EducationSchool of Materials Science and EngineeringJilin UniversityChangchun 130022People’s Republic of China

Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at−20°C or ***,the key capability of ultrafast charging at ultralow temperature for SIBs is rarely ***,a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue,which is synthesized via a high temperature shock *** a hybrid shows an unprecedented rate performance(237.9 mAh g^(−1)at 2 A g^(−1))at−60℃,outperforming all reported SIB anode *** with a Na_(3)V_(2)(PO_(4))_(3)cathode,the energy density of the full cell can reach to 181.9 Wh kg^(−1)at−40°*** on this work,a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.

关键词： Bi nanoparticles High temperature shock High-rate activation Ultrafast charging Low-temperature sodium-ion batteries

Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N‑RGO for Boosting Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 517-532页

作者： Kaili Zhang yuefeng Yan Zhen Wang Guansheng Ma Dechang jia Xiaoxiao Huang yu Zhou State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China MIIT Key Laboratory of Advanced Structural‑Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Developing effective strategies to regulate graphene’s conduction loss and polarization has become a key to expanding its application in the electromagnetic wave absorption(EMWA)*** on the unique energy band structure of graphene,regulating its bandgap and electrical properties by introducing heteroatoms is considered a feasible ***,metal-nitrogen doping reduced graphene oxide(M–N-RGO)was prepared by embedding a series of single metal atoms M–N_(4) sites(M=Mn,Fe,Co,Ni,Cu,Zn,Nb,Cd,and Sn)in RGO using an N-coordination atom-assisted *** composites had adjustable conductivity and polarization to optimize dielectric loss and impedance matching for efficient EMWA *** results showed that the minimum reflection loss(RL_(min))of Fe–N-RGO reaches−74.05 dB(2.0 mm)and the maximum effective absorption bandwidth(EAB_(max))is 7.05 GHz(1.89 mm)even with a low filler loading of only 1 wt%.Combined with X-ray absorption spectra(XAFS),atomic force microscopy,and density functional theory calculation analysis,the Fe–N_(4) can be used as the polarization center to increase dipole polarization,interface polarization and defect-induced polarization due to d-p orbital hybridization and structural ***,electron migration within the Fe further leads to conduction loss,thereby synergistically promoting energy *** study demonstrates the effectiveness of metal-nitrogen doping in regulating the graphene′s dielectric properties,which provides an important basis for further investigation of the loss mechanism.

关键词： Electromagnetic wave absorption Fe-N-RGO Dipole polarization Conduction loss Impedance matching

Catalytic Performance of Carbon Smoke over Ag-LSCF Composite Catalysts

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 30-34页

作者： GUO Guanlun HAN Ming lu Shaomin yu Jing JU Hongling 无 Hubei Key Laboratory of Advanced Technology for Automotive Components&Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China College of Mechanical and Transportation Southwest Forestry UniversityKunming 650000China

To improve the catalytic performance of La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)towards carbon soot,we utilized the impregnation method to incorporate Ag into the prepared LSCF *** conducted a series of characterization tests and evaluated the soot catalytic activity of the composite catalyst by comparing it with the LaCoO_(3) group,LaFeO_(3) group,and catalyst-free *** results indicate that the Ag-LSCF composite catalyst exhibits the highest soot catalytic activity,with the characteristic temperature values of 376.3,431.1,and 473.9℃at 10%,50%,and 90%carbon soot conversion,*** values are 24.8,20.2,and 23.1℃lower than those of the LSCF *** also shows that LSCF can improve the catalytic activity of soot after compounding with Ag,and reflects the necessity of using catalysts in soot combustion *** characterization and BET test show that Ag-LSCF has more abundant surface-adsorbed oxygen species,larger specific surface area and pore volume than LSCF,which also proves that Ag-LSCF has higher soot catalytic activity.

关键词： metallic composites carbon smoke oxidation perovskite catalyst soot

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分段移位相关延迟键控混沌通信方法

南京邮电大学学报（自然科学版） 2012年第1期32卷 71-74页

作者：于佳鹭杨华蒋国平南京邮电大学计算机学院江苏南京210046 南京邮电大学电子科学与工程学院江苏南京210046 南京邮电大学自动化学院江苏南京210046

针对相关延迟键控(CDSK)混沌通信方案存在的缺点,提出了一种改进的混沌键控调制方案——分段移位相关延迟键控(SSCDSK)。作为一种多进制调制方案,SSCDSK将延迟信号等分成M个信号段,根据传送的M进制数字码元,将M个信号段循环右移n(0≤n 详细信息

针对相关延迟键控(CDSK)混沌通信方案存在的缺点,提出了一种改进的混沌键控调制方案——分段移位相关延迟键控(SSCDSK)。作为一种多进制调制方案,SSCDSK将延迟信号等分成M个信号段,根据传送的M进制数字码元,将M个信号段循环右移n(0≤n

关键词：混沌通信相关延迟键控分段移位误码率