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Polyzwitterionic cross-linked double network hydrogel electrolyte enabling high-stable Zn anode

Nano Research 2024年第6期17卷 5278-5287页

作者： Mengyu Shi Junlong Zhang Guochuan Tang Ben Wang Sen Wang Xiaoxian Ren Guojie Li weihua c.en chuntai Liu changyu Shen State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China college of chemistry and Green catalysis center Zhengzhou UniversityZhengzhou 450001China Research Institute of Interdisciplinary Sc.ence and School of Materials Sc.ence and engineering Dongguan University of TechnologyDongguan 523808China

Zn metal anode suffers from dendrite issues and passive byproducts,which severely plagues the practical application of aqueous Zn metal ***,a polyzwitterionic cross-linked double network hydrogel electrolyte composed of physical crosslinking(hyaluronic acid)and chemical crosslinking(synthetic zwitterionic monomer copolymerized with acrylamide)is introduced to overcome these *** the one hand,highly hydrophilic physical network provides an energy dissipation channel to buffer stress and builds a H_(2)O-poor interface to avoid side *** the other hand,the charged groups(sulfonic and imidazolyl)in chemical crosslinking structure build anion/cation transport channels to boost ions’kinetics migration and regulate the typical solvent structure[Zn(H_(2)O)_(6)]^(2+)to R-SO_(3)^(−)[Zn(H_(2)O)_(4)]^(2+),with uniform electric field distribution and significant resistance to dendrites and parasitic *** on the above functions,the symmetric zinc cell exhibits superior cycle stability for more than 420 h at a high current density of 5 mA·cm^(−2),and Zn||MnO_(2)full cell has a reversible specific capacity of 150 mAh·g^(−1)after 1000 cycles at 2 c with this hydrogel ***,the pouch cell delivers impressive flexibility and cyclability for energy-storage applications.

关键词： Zn anode dendrites parasitic reactions polyzwitterion double network hydrogel electrolyte

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Quantitative lithium substitution of carboxyl hydrogens in polyacrylic acid binder enables robust SiO electrodes with durable lithium storage stability

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Journal of energy chemistry 2024年第10期97卷 352-360页

作者： weihua Wang Wenyi Li Siyi Jing Huiping Yang Huiqun Wang Ling Huang Yuxiang Mao Xikun Pang Yudai Huang Li Zhang State Key Laboratory of Physical chemistry of Solid Surfaces Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringCollaborative Innovation Centre of Chemistry for Energy Materials (iChEM) Xiamen University State Key Laboratory of chemistry and Utilization of carbon-Based energy Resources College of Chemistry Xinjiang University

The design of advanced binders plays a critical role in stabilizing the cycling performance of large-volume-effect silicon monoxide（SiO） *** the classic polyacrylic acid（PAA） binder,the self-association of-cOOH groups in PAA leads to the formation of intramolecular and intermolecular hydrogen bonds,greatly weakening the bonding force of the binder to SiO ***,strengthening the binder-material interaction from the perspective of binder molecular regulation poses a significant ***,a modified PAA-Lix（0.25 ≤x≤1） binder with prominent mechanical properties and adhesion strength is specifically synthesized for SiO anodes by quantitatively substituting the carboxylic hydrogen with *** appropriate lithium substitution（x=0.25） not only effectively increases the number of hydrogen bonds between the PAA binder and SiO surface owing to charge repulsion effect between ions,but also guarantees moderate entanglement between PAA-Lixmolecular chains through the ion-dipole *** such,the PAA-Li0.25/SiO electrode exhibits exceptional mechanical properties and the lowest volume change,as well as the optimum cycling(1237.3 mA h g-1after 100cycles at 0.1 c) and rate performance(1000.6 mA h g-1at 1 c),significantly outperforming the electrode using pristine PAA *** work paves the way for quantitative regulation of binders at the molecular level.

关键词： Adhesion strength charge repulsion effect Polyacrylic acid binder Quantitative lithium substitution SiO anode

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MXene@c-MWcNT Adhesive Silica Nanofiber Membranes enhancing Electromagnetic Interference Shielding and Thermal Insulation Performance in Extreme environments

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Nano-Micro Letters 2024年第10期16卷 82-98页

作者： Ziyuan Han Yutao Niu Xuetao Shi Duo Pan Hu Liu Hua Qiu weihua c.en Ben Bin Xu Zeinhom MEl-Bahy Hua Hou Eman Ramadan Elsharkawy Mohammed AAmin chuntai Liu Zhanhu Guo Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People's Republic of China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026People's Republic of China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123People's Republic of China Shaanxi Key Laboratory of Macromolecular Sc.ence and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi'an 710072People's Republic of China college of chemistry&Green catalysis center Zhengzhou UniversityZhengzhou 450001People's Republic of China Mechanical and construction engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle Upon Tyne NE18UK Department of chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt Department of chemistry Faculty of ScienceNorthern Border UniversityArarSaudi Arabia Department of chemistry College of ScienceTaif UniversityP.O.Box 1109921944 TaifSaudi Arabia

A lightweight flexible thermally stable composite is fabricated by com-bining silica nanofiber membranes(SNM)with MXene@c-MWcNT hybrid *** flexible SNM with outstanding thermal insulation are prepared from tetraethyl orthosilicate hydrolysis and condensation by electrospinning and high-temperature calcination;the MXene@c-MWcNT_(x:y)films are prepared by vacuum filtration *** particular,the SNM and MXene@c-MWcNT_(6:4)as one unit layer(SMc_(1))are bonded together with 5 wt%polyvinyl alcohol(PVA)solution,which exhibits low thermal conductivity(0.066 W m^(-1)K^(-1))and good electromagnetic interference(EMI)shielding performance(average EMI SE_(T),37.8 dB).With the increase in func-tional unit layer,the overall thermal insulation performance of the whole composite film(SMc_(x))remains stable,and EMI shielding performance is greatly improved,especially for SMc_(3)with three unit layers,the average EMI SET is as high as 55.4 *** addition,the organic combination of rigid SNM and tough MXene@c-MWcNT_(6:4)makes SMc_(x)exhibit good mechanical tensile ***,SMc_(x)exhibit stable EMI shielding and excellent thermal insulation even in extreme heat and cold ***,this work provides a novel design idea and important reference value for EMI shielding and thermal insulation components used in extreme environmental protection equipment in the future.

关键词： SiO_(2)nanofiber membranes MXene@c-MWcNT composite film Thermal insulation Electromagnetic interference shielding

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Some basic principles in dynamic theory of viscoelastic materials with voids

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Sc.ence china(Physics,Mechanics & Astronomy) 2007年第3期50卷 370-378页

作者： LUO en LI weihua Department of Applied Mechanics and engineering Sun Yat-sen UniversityGuangzhou 510275China

According to the basic idea of classical yin-yang complementarity and modern dual-complementarity, in a simple and unified way proposed by Luo, some basic principles in the dynamic theory of viscoelastic materials with voids can be estab- lished systematically. In this paper, an important integral relation in terms of con- volutions is given, which can be considered as the generalized principle of virtual work in mechanics. Based on this relation, it is possible not only to obtain the principle of virtual work and the reciprocal theorem, but also to derive systemati- cally the complementary functionals for the eight-field, six-field, four-field simpli- fied Gurtin-type variational principles and the potential energy-functional for the two-field one in the dynamic theory of viscoelastic materials with voids by the generalized Legendre transformations given in this paper. Furthermore, with this approach, the intrinsic relationship among various principles can be explained clearly.

关键词： dynamic theory of viscoelastic materials with voids principle of virtual work reciprocal theorem simplified Gurtin-type variational principle complementary relation

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头皮缺损伴颅骨外露创面的组织瓣修复策略

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中华烧伤与创面修复杂志 2024年第9期40卷 828-834页

作者：李罡张志孙敬恩林伟华李孝建暨南大学附属广州红十字会医院烧伤整形科广州510220

目的探讨头皮缺损伴颅骨外露创面的组织瓣修复策略。方法该研究为回顾性观察性研究。2019年1月—2023年12月,暨南大学附属广州红十字会医院收治18例符合入选标准的不同头皮缺损伴颅骨外露创面面积(以下简称头皮缺损面积)的患者,其中男1... 详细信息

目的探讨头皮缺损伴颅骨外露创面的组织瓣修复策略。方法该研究为回顾性观察性研究。2019年1月—2023年12月,暨南大学附属广州红十字会医院收治18例符合入选标准的不同头皮缺损伴颅骨外露创面面积(以下简称头皮缺损面积)的患者,其中男13例、女5例,年龄17~59岁。清创后,头皮缺损面积为1 cm×1 cm~25 cm×25 cm。针对头皮缺损面积cm 2且周围头皮局部条件较好的患者,采用局部皮瓣(面积为2 cm×2 cm~5 cm×5 cm)进行创面修复;将皮瓣供区创面拉拢缝合,若缝合张力较大则取头部皮片进行创面修复。对于头皮缺损面积>9 cm 2且≤1/4头皮总面积的患者,采用扩张皮瓣(面积为5 cm×3 cm~12 cm×12 cm)进行创面修复;将皮瓣供区创面直接拉拢缝合。对于头皮缺损面积>1/4头皮总面积且≤1/2头皮总面积的患者,采用游离股前外侧皮瓣(面积为9 cm×7 cm~29 cm×14 cm)进行创面修复;将皮瓣供区创面分层缝合,若张力较大则移植同侧大腿皮片进行修复。对于头皮缺损面积>1/2头皮总面积的患者,采用游离大网膜瓣(面积为28 cm×23 cm~29 cm×26 cm)+大腿皮片进行创面修复,并直接缝合切取大网膜瓣造成的腹部切口。记录术中移植的组织瓣类型。术后,观察组织瓣及受区移植皮片成活情况、皮瓣供区创面/切取大网膜瓣造成的腹部切口愈合情况。随访时,观察组织瓣成活情况、皮瓣供区创面/切取大网膜瓣造成的腹部切口瘢痕增生情况。末次随访时,复查头部cT评估颅骨有无坏死。结果针对本组病例头皮缺损伴颅骨外露创面,4例患者采用局部皮瓣修复,其中2例患者采用局部V-Y推进皮瓣修复,2例患者采用局部双蒂拱顶石皮瓣修复,术后皮瓣均完全成活。5例患者采用扩张皮瓣修复,其中1例患者埋置2个皮肤软组织扩张器,4例患者埋置1个皮肤软组织扩张器,术后扩张皮瓣均完全成活。7例患者采用游离股前外侧皮瓣移植修复,术后6例患者皮瓣完全成活,1例患者皮瓣远端坏死,经清创拉拢缝合后愈合良好。2例患者采用游离移植大网膜瓣+大腿皮片修复,术后大网膜瓣和受区移植皮片均存活良好。术后,皮瓣供区创面/切取大网膜瓣造成的腹部切口均愈合良好。术后随访6~24个月,组织瓣均存活良好,无颅骨外露;皮瓣供区创面/切取大网膜瓣造成的腹部切口瘢痕增生不明显。末次随访时,复查cT显示所有患者颅骨均无坏死。结论根据头皮缺损面积从小至大依次选择局部皮瓣、扩张皮瓣、游离股前外侧皮瓣、游离大网膜瓣+皮片修复创面,效果良好,值得临床推广。

关键词：外科皮瓣伤口愈合头皮缺损颅骨外露

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Unconventional Hamilton-type variational principles for analytical mechanics

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Sc.ence china(Physics,Mechanics & Astronomy) 2007年第2期50卷 152-162页

作者： LUO en LIANG LiFu LI weihua Department of Applied Mechanics and engineering Sun Yat-sen UniversityGuangzhou 510275China Department of Aerospace engineering Harbin Engineering UniversityHarbin 150001China

According to the basic idea of classical yin-yang complementarity and modern dual-complementarity, in a simple and unified new way proposed by Luo, the un-conventional Hamilton-type variational principles of holonomic conservative system in analytical mechanics can be established systematically. This unconventional Hamilton-type variational principle can fully characterize the initial-value problem of analytical mechanics, so that it is an important innovation for the Hamilton-type variational principle. In this paper, an important integral relation is given, which can be considered as the expression of the generalized principle of virtual work for analytical mechanics in mechanics. Based on this relation, it is possible not only to obtain the principle of virtual work of holonomic conservative system in analytical mechanics, but also to derive systematically the complementary functionals for three-field and two-field unconventional variational principles, and the functional for the one-field one by the generalized Legendre transformation given in this paper. Further, with this new approach, the intrinsic relationship among various principles can be explained clearly. Meanwhile, the unconventional Hamilton-type variational principles of nonholonomic conservative system in analytical mechanics can also be established systematically in this paper.

关键词： analytical mechanics holonomic and nonholonomic systems unconventional Hamilton-type variational principle dual-complementarity initial-value problem restricted variation

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Josephin domain containing 2(JOSD2)promotes lung cancer by inhibiting LKB1(Liver kinase B1)activity

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Signal Transduction and Targeted Therapy 2024年第2期9卷 693-708页

作者： Tao Yuan c.enming Zeng Jiawei Liu c.enxi Zhao Fujing Ge Yuekang Li Meijia Qian Jiamin Du weihua Wang Yonghao Li Yue Liu Xiaoyang Dai Jianya Zhou Xueqin c.en Shenglin Ma Hong Zhu Qiaojun He Bo Yang Institute of Pharmacology&Toxicology Zhejiang Province Key Laboratory of Anti-Cancer Drug ResearchCollege of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Innovation Institute for Artificial Intelligence in Medicine Zhejiang UniversityHangzhou 311199China Ministry of Education Key Laboratory of chinese Medicinal Plants Resource from Lingnan Research Center of Medicinal Plants Resource Science and EngineeringGuangzhou University of Chinese MedicineGuangzhou 510006China center for Drug Safety Evaluation and Research of Zhejiang University Hangzhou 310058China Department of Respiratory Disease Thoracic Disease CenterThe First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhou 310006China Department of Oncology Hangzhou Cancer HospitalHangzhou 310002China cancer center of Zhejiang University HangzhouChina engineering Research center of Innovative Anticancer Drugs Ministry of EducationHangzhouChina

Non-small cell lung cancer(NScLc)ranks as one of the leading causes of cancer-related deaths *** the prominence and effectiveness of kinase-target therapies in NScLc treatment,these drugs are suitable for and beneficial to a mere~30%of NScLc ***,the need for novel strategies addressing NScLc remains ***(DUBs),a group of diverse enzymes with well-defined catalytic sites that are frequently overactivated in cancers and associated with tumorigenesis and regarded as promising therapeutic ***,the mechanisms by which DUBs promote NScLc remain poorly *** a global analysis of the 97 DUBs’contribution to NScLc survival possibilities using The cancer Genome Atlas(TcGA)database,we found that high expression of Josephin Domain-containing protein 2(JOSD2)predicted the poor prognosis of *** of JOSD2 significantly impeded NScLc growth in both cell/patient-derived xenografts in ***,we found that JOSD2 restricts the kinase activity of LKB1,an important tumor suppressor generally inactivated in NScLc,by removing K6-linked polyubiquitination,an action vital for maintaining the integrity of the LKB1-STRAD-MO25 ***,we identified the first small-molecule inhibitor of JOSD2,and observed that its pharmacological inhibition significantly arrested NScLc proliferation in vitro/in *** findings highlight the vital role of JOSD2 in hindering LKB1 activity,underscoring the therapeutic potential of targeting JOSD2 in NScLc,especially in those with inactivated LKB1,and presenting its inhibitors as a promising strategy for NScLc treatment.

关键词： LKB1 inhibiting removing

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基于改进YOLOv8的船舰遥感图像旋转目标检测算法

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图学学报 2024年第4期45卷 726-735页

作者：牛为华郭迅华北电力大学计算机系河北保定071003 复杂能源系统与智能计算教育部工程研究中心河北保定071003

针对船舰遥感目标图像检测中存在的小目标检测困难,船舰形状各异以及传统水平边界框对于高长宽比的目标所框选冗余信息较多的问题,提出了一种基于改进YOLOv8的船舰遥感图像旋转目标检测算法。通过改进主干网络中的卷积结构,缓解了由于... 详细信息

针对船舰遥感目标图像检测中存在的小目标检测困难,船舰形状各异以及传统水平边界框对于高长宽比的目标所框选冗余信息较多的问题,提出了一种基于改进YOLOv8的船舰遥感图像旋转目标检测算法。通过改进主干网络中的卷积结构,缓解了由于跨步卷积所导致的细粒度信息丢失的问题,对于小目标检测的精度有所提升;将c2f中的部分卷积模块替换为DcNv3可变形卷积,使其可以更好提取不规则物体的特征信息,提高模型的非线性建模能力;在颈部网络中融入主干网络中的浅层特征信息,缓解了经多次卷积操作所导致的细节信息丢失的问题,提升了模型对小目标物体的检测能力。实验结果表明,改进后的算法在ShipRSImagenet数据集上的检测精度(mAP50)达到了84.317%,较基准模型提升了4.054%,在HRSc2016数据集上达到了93.235%,较基准模型提升了1.555%,在少量增加模型参数量的情况下取得了较高的检测性能,很好地平衡了模型的效率和性能。

关键词： YOLOv8 旋转目标检测可变形卷积特征融合深度学习

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DMA-Trans: A Difference Metric Attention with Position Distancebased Weighting for Transformer in Data Sequence Modeling of Industrial Processes

DMA-Trans: A Difference Metric Attention with Position Dista...

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第35届中国过程控制会议

作者： Ziyi Yang Xiaofeng Yuan Kai Wang Yalin Wang chunhua Yang weihua Gui School of Automation Central South University

Accurate feature extraction and quality variable prediction are critical problems for time sequences in industrial processes. However, industrial samples are often time-relevant and have strong correlations with each other that has different positional distance, making it challenging for conventional data-driven models like LSTM and Vanilla Transformer to capture these underlying features. In this paper, A Difference Metric Attention with Position Distance-based Weighting is proposed for Transformer(DMA-Trans) in industrial time series modeling. Firstly, the Difference Metric Attention is established to calculate the difference of query-key vector pair to measure the spatial similarity. In this fashion, the difference can accurately represent the similarity of vectors, compared with the original dot product by directly using any two vectors. Then, Positional Distancebased Weights are designed to capture the distance relevance of samples that have different positional distance. This information may help to extract more potential features because the closer samples tend to have higher relevance while there are weak correlations if samples are far in distance. The effectiveness of the DMA-Trans model is validated in industrial hydrocracking processes for c5 content in the light naphtha and the final boiling point of jet fuel.

关键词： Soft sensor Attention mechanism Dot product Quality prediction Transformer

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OPc-McA固化剂对盾构废泥的固化性能及其微观作用机制研究

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中南大学学报（自然科学版） 2024年第4期55卷 1492-1508页

作者：张恒根王卫华邓声贵何昊刘涛山东省海洋环境与地质工程重点实验室中国海洋大学山东青岛266100 中南大学资源与安全工程学院湖南长沙410083 中国海洋大学海洋地球科学学院山东青岛266100 青岛海洋科技中心海洋地质过程与环境功能实验室山东青岛266237

通过添加高炉矿渣(GGBS)、脱硫石膏(FGDG)、铝酸钙粉、生石灰和明矾到普通硅酸盐水泥P.O42.5(OPc)中,制备一种新型盾构废泥改良材料OPc-McA。首先,通过正交测试法确定OPc-McA中各原料的最优配比。然后,使用该材料和OPc在10%~40%的掺量... 详细信息

通过添加高炉矿渣(GGBS)、脱硫石膏(FGDG)、铝酸钙粉、生石灰和明矾到普通硅酸盐水泥P.O42.5(OPc)中,制备一种新型盾构废泥改良材料OPc-McA。首先,通过正交测试法确定OPc-McA中各原料的最优配比。然后,使用该材料和OPc在10%~40%的掺量下处理芜湖市城南过江隧道工程产生的盾构废泥,并检测不同固化时间(3、7、28 d)下的抗压强度。最后,采用扫描电镜(SEM)、工业cT系统和X射线衍射(XRD)观察和分析固化后废泥试样的微观形貌、孔隙和裂纹特征以及矿物成分变化。研究结果表明:OPcMcA的最优材料配比为51%OPc、32%GGBS、8%FGDG、5%铝酸钙粉、3%生石灰、1%明矾;OPcMcA对芜湖盾构废泥的固化能力比OPc的强,在低掺量情况下更是如此;固化剂掺量和固化时间的增加会导致试样强度增加、脆性增强,并使部分试样转变为拉伸破坏;在OPc-McA固化的试样中检测到了OPc固化试样中未检测到的水化硅铝酸钙(c-A-S-H)和单硫型硫铝酸盐(AFm),并且钙矾石(AFt)含量也更高;在同等掺量下,OPc-McA固化试样中大尺寸孔隙的比例以及孔隙的总体积均比OPc固化试样的小。

关键词：盾构废泥固化剂 cT扫描力学性能反应机理

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