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Unveiling the tailorable electrochemical properties of zeolitic imidazolate framework-derived Ni-doped LiCoO_(2) for lithium-ion batteries in half/full cells

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Journal of Energy Chemistry 2024年第6期93卷 229-242,I0006页

作者： Jian-En Zhou Yiqing Liu Zhijian Peng Quanyi Ye Hua zhong Xiaoming Lin ronghua Zeng Yongbo Wu Jiaye Ye Guangdong Provincial International Joint Research Center for Energy Storage Materials Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina School of Chemistry and Physics Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006GuangdongChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong-Hong Kong Joint Laboratory of Quantum MatterSouth China Normal UniversityGuangzhou 510006GuangdongChina

As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO_(2)(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting the mechanical strains and alleviating phase degradation upon cycling.Hereinafter,we propose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi_(0.1)Co_(0.9)O_(2)(LNCO)with tailorable electrochemical properties.The rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700℃(LNCO-700)outperforms its counterparts in cyclability(156.8 mA h g^(-1)at 1 C for 200 cycles in half cells,1 C=275 mA g^(-1))and rate capability due to the expedited ion/electron transport and the strengthen mechanical robustness.The feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g^(-1)at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structu re,ameliorated electro nic co nductivity,a nd exalted lithium sto rage activity.This work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application.

关键词： Lithium-ion batteries Zeolitic imidazolate framework LiNi_(0.1)Co_(0.9)O_(2) Electrochemical properties

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Click-hydrogel delivered aggregation-induced emissive nanovesicles for simultaneous remodeling and antibiosis of deep burn wounds

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Aggregate 2024年第1期5卷 244-256页

作者： Xu Chen Meijiao Zhao Qihu Xie Sitong Zhou Xiaoping zhong Judun Zheng ronghua Yang Xianjin Du Jinyu Xia Yuhui Liao Department of Infectious Diseases The Fifth Affiliated HospitalSun Yat-sen UniversityZhuhaiChina Molecular Diagnosis and Treatment Center for Infectious Diseases Dermatology HospitalSouthern Medical UniversityGuangzhouChina Department of Burns and Plastic Surgery The Second Affiliated Hospital of Shantou University Medical CollegeShantouChina Department of Dermatology TheFirst People’s Hospital of FoshanFoshanChina Department of Burn and Plastic Surgery Guangzhou First People’s HospitalSouth China University of TechnologyGuangzhouChina Department of Critical Care Medicine Renmin Hospital of Wuhan UniversityWuhanChina

As a high-risk trauma,deep burns are always hindered in their repair process by decreased tissue regeneration capacity and persistent infections.In this study,we developed a simultaneous strategy for deep burn wounds treatment using functional nanovesicles with antibacterial and tissue remodeling properties,delivered via a click-chemistry hydrogel.An aggregation-induced emission photosensitizer of 4-(2-(5-(4-(diphenylamino)phenyl)thiophen-2-yl)vinyl)-1-(2-hydroxyethyl)pyridin-1-ium bromide(THB)with excellent photodynamic properties was first prepared,and then combined with readily accessible adipose stem cells-derived nanovesicles to generate the THB functionalized nanovesicles(THB@ANVs).The THB@ANVs showed strong antibacterial activity against Gram-positive bacteria(up to 100%killing rate),and also beneficial effects on tissue remodeling,including promoting cell migration,cell proliferation,and regulating immunity.In addition,we prepared a click-hydrogel of carboxymethyl chitosan for effective delivery of THB@ANVs on wounds.This hydrogel could be injected to conform to the wound morphology while responding to the acidic microenvironment.In vivo evaluations of wound healing revealed that the THB@ANVs hydrogel dressing efficiently accelerated the healing of second-degree burn wounds by reducing bacterial growth,regulating inflammation,promoting early angiogenesis,and collagen deposition.This study provides a promising candidate of wound dressing with diverse functions for deep burn wound repair.

关键词： aggregation-induced emission burn wounds nanovesicles

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Distribution and Susceptibility Assessment of Collapses and Landslides in the Riparian Zone of the Xiaowan Reservoir

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Chinese Geographical Science 2019年第1期29卷 70-85页

作者： zhong ronghua HE Daming HU Jinming DUAN Xingwu HUANG Jiangcheng CHENG Xupeng Institute of International Rivers and Eco-security Yunnan University Yunnan Key Laboratory of International Rivers and Transboundary Eco-security Yunnan University

The southwest alpine gorge region is the major state base of hydropower energy development in China and hence planned many cascading hydropower stations. After the reservoir impoundment, the intense water level fluctuations under the interaction of cascade dams operating and the mountainous flooding, usually cause bank collapse, landslide and debris flow hazards. The Xiaowan reservoir(XWR), for example, as the ‘dragon head' meg reservoir located in the middle mainstream of Lancang River, have resulted in a series of geohazards during its building and operating. In this study, we investigated the number and surface area of collapses and landslides(CLs) occurred in the water level fluctuations zone(WLFZ) of XWR using remote sensing images of Gaofen-1 and Google Earth; evaluated the CLs susceptibility using information value method. The results presented that the total WLFZ area of 87.03 km2 and 804 CLs masses with a total area of 1.98 km2 were identified in the riparian zone of XWR. CLs mainly occurred at an elevation of 1190–1240 m, and the CLs density increased with an increase in altitude. The WLFZ with a slope gradient of 25°– 45° is the main CLs distribution area that accounts for more than half of the total CLs area. The susceptibility assessment revealed that high and very high susceptibility zones are generally distributed along zones with an elevation of 1210–1240 m, a slope degree of 25°–45° and a slope aspect perpendicular to the direction of Lancang River. Furthermore, these susceptible zones are close in distance to the dam site and tend to be in the riparian zones with the formation lithology of Silurian strata. These results provide a valuable contribution to prevent and control geohazards in the XWR area. Moreover, this study offers a constructive sample of geohazards assessment in the riparian zone of large reservoirs throughout the mountains of southwest China.

关键词： susceptibility assessment collapses and landslides water level fluctuations Xiaowan Reservoir Lancang-Mekong River

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基于虚幻引擎的红外成像激光对抗模拟系统

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激光技术 2024年第1期48卷 92-96页

作者：钟强何衡湘唐钰贾荣华李玲慧西南技术物理研究所成都610041

为了得到激光对红外成像系统可视化、场景化的干扰效果,采用虚幻引擎搭建了红外成像激光对抗模拟系统。利用虚幻引擎的模型与场景编辑功能构建对抗场景,并模拟红外成像;构建了激光干扰数学模型,以此生成模拟激光干扰光斑,实现了不同距... 详细信息

为了得到激光对红外成像系统可视化、场景化的干扰效果,采用虚幻引擎搭建了红外成像激光对抗模拟系统。利用虚幻引擎的模型与场景编辑功能构建对抗场景,并模拟红外成像;构建了激光干扰数学模型,以此生成模拟激光干扰光斑,实现了不同距离、不同红外成像视场以及不同激光入射角的对抗模拟,并对干扰前后的图像进行了对比分析。结果表明,当红外成像视场保持不变、干扰距离由3.7 km减小为2.9 km和2 km时,干扰光斑面积在成像中的占比均逐渐增大;当干扰距离保持不变、红外成像视场由8°缩小为6°和4°时,干扰光斑面积在成像中的占比也逐渐增大;当红外成像视场与干扰距离不变,激光入射角度在±4°范围内调整,干扰光斑面积几乎没有变化。该模拟系统能较真实地对红外成像及激光对抗效果进行模拟,可作为红外成像激光对抗效能评估研究的基础工具。

关键词：激光技术红外成像虚拟仿真虚幻引擎

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Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale anaerobic/anoxic/aerobic municipal sewage treatment plant

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Frontiers of Environmental Science & Engineering 2023年第3期17卷 107-120页

作者： Hongcan Cui ronghua Xu zhong Yu Yuanyuan Yao Shaoqing Zhang Fangang Meng School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510275China

Understanding the structures and dynamics of bacterial communities in activated sludge(AS)in full-scale wastewater treatment plants(WWTPs)is of both engineering and ecological significance.Previous investigations have mainly focused on the AS communities of WWTP aeration tanks,and the differences and interactions between the communities in anaerobic and anoxic tanks of the AS system remain poorly understood.Here,we investigated the structures of bacterial communities and their inter-connections in three tanks(anaerobic,anoxic,and aerobic)and influent from a full-scale WWTP with conventional anaerobic/anoxic/aerobic(A/A/O)process over a year to explore their functionality and network differentiation.High-throughput sequencing showed that community compositions did not differ appreciably between the different tanks,likely due to the continuous sludge community interchange between tanks.However,network analysis showed significant differences in inter-species relationships,OTU topological roles,and keystone populations in the different AS communities.Moreover,the anoxic network is expected to be more unstable and easily affected by environmental disturbance.Tank-associated environmental factors,including dissolved oxygen,pH,and nutrients,were found to affect the relative abundance of functional genera(i.e.,AOB,NOB,PAOs,and denitrifiers),suggesting that these groups were more susceptible to environmental variables than other bacteria.Therefore,this work could assist in improving our understanding of tank-associated microbial ecology,particularly the response of functional bacteria to seasonal variations in WWTPs employing A/A/O process.

关键词： Activated sludge Bacterial community Tank-dependence Network association Functional bacteria

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补脾益肠丸抑制树突状细胞炎性分化及促进紧密连接蛋白表达治疗溃疡性结肠炎的作用机制

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中华中医药杂志 2024年第5期39卷 2204-2210页

作者：肖秋萍钟友宝黄佳琦陈丽玲李姗姗施旻刘端勇刘荣华江西中医药大学南昌330004 中国中医科学院中医药健康产业研究所南昌330115

目的:研究补脾益肠丸调节树突状细胞(DCs)炎性分化及紧密连接蛋白(TJs)表达缓解溃疡性结肠炎(UC)的作用机制。方法:低、中、高剂量补脾益肠丸及5-氨基水杨酸(5-ASA)连续14 d治疗2.5%葡聚糖硫酸钠(DSS)诱导的UC模型小鼠,每天称重并观察... 详细信息

目的:研究补脾益肠丸调节树突状细胞(DCs)炎性分化及紧密连接蛋白(TJs)表达缓解溃疡性结肠炎(UC)的作用机制。方法:低、中、高剂量补脾益肠丸及5-氨基水杨酸(5-ASA)连续14 d治疗2.5%葡聚糖硫酸钠(DSS)诱导的UC模型小鼠,每天称重并观察粪便黏稠度及便血情况,采用疾病活动指数(DAI)评估结肠炎症状,实验结束后,取结肠称重并测量长度,HE染色评价结肠组织损伤情况,流式细胞术、ELISA法分别检测脾脏不同表型DCs及结肠炎性因子水平,免疫组化、q PCR检测结肠TJs的蛋白及m RNA表达水平。结果:中、高剂量补脾益肠丸能显著减轻结肠炎小鼠腹泻、便血症状,并显著降低小鼠DAI、结肠质量及结肠病理组织损伤(P<0.05),抑制DCs炎性分化,使脾脏炎性DCs(CD11c^(+)CD103^(-)E-cadherin^(+)、CD11c^(+)CD103^(-)CD80^(+)、CD11c^(+)CD103^(-)MHC-Ⅱ^(+)、CD11c^(+)CD103^(-)CD86^(+)、CD11c^(+)CD103^(-)TNF-α^(+)DCs)细胞比例显著下调(P<0.01),炎性因子(IFN-γ、IL-1β、IL-6及IL-23)水平亦显著降低(P<0.05,P<0.01);此外,中、高剂量补脾益肠丸均能显著上调Caludin1、Occludin及ZO-1的蛋白及m RNA表达水平(P<0.05,P<0.01)。结论:补脾益肠丸能有效缓解UC,其作用与抑制DCs炎性分化及促进TJs表达紧密相关。

关键词：补脾益肠丸溃疡性结肠炎炎性树突状细胞紧密连接蛋白作用机制

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毛囊闭锁“玄府”新说

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四川中医 2024年第3期42卷 25-28页

作者：刘滢何容华何鑫程宏斌成都中医药大学临床医学院四川成都610075 成都中医药大学附属医院四川成都610032

毛囊闭锁指毛囊皮脂腺相关部位出现化脓、脓肿、囊肿表现的一大类疾病,临床治疗难度极大,给患者带来巨大的生理心理和经济负担,也是临床研究的热点问题。钟氏川派外科传人程宏斌教授从中医玄府理论角度去论治该病能取得较好疗效,认为气... 详细信息

毛囊闭锁指毛囊皮脂腺相关部位出现化脓、脓肿、囊肿表现的一大类疾病,临床治疗难度极大,给患者带来巨大的生理心理和经济负担,也是临床研究的热点问题。钟氏川派外科传人程宏斌教授从中医玄府理论角度去论治该病能取得较好疗效,认为气、痰、湿、瘀、毒淤堵或体虚玄府空虚是导致腠理开阖失常、气津流通障碍的关键环节,现代抗生素、激素、免疫抑制剂及清热解毒中药的过度应用,也是导致病情反复发作缠绵难愈的重要病机。本文即以临床经典有效案例出发,深入分析玄府理论在本病的理论与应用。总结出五疏、开、透、导、解五法并用,为治疗该病提供新的思路。

关键词：毛囊闭锁玄府川派

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A User-Centered Multi-space Collaborative Visual Analysis for Cyber Security

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Chinese Journal of Electronics 2018年第5期27卷 910-919页

作者： zhong Zengsheng ZHAO Ying SHI ronghua SHENG Yingshuai LIU Junrong MENG Hua LIN Dan School of Information Science and Engineering Central South University Information Office Chongqing Technology and Business University Key Laboratory of Network Assessment Technology Institute of Information EngineeringChinese Academy of Sciences

Based on a university’s practice in upgrading its network management platform, presents a visual analytic system which integrates network topological space,IP space and network geographical space into a collaborative solution to help network administrators address difficulties in locating end user and troubleshooting. Throughout the development cycle, we worked alongside with users to clarify their actual demands and habitual operations through scenario application, interviews and a variety of evaluation. This user-centered approach guides us step by step to apply cyber security visualization and visual analytic technology to actual use.

关键词： Cyber security Campus network management Visual analytics User evaluation

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Zero dissipation limit to a Riemann solution consisting of two shock waves for the 1D compressible isentropic Navier-Stokes equations

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Science China Mathematics 2013年第11期56卷 2205-2232页

作者： ZHANG YingHui PAN ronghua TAN zhong panrh@math.gatech.edu, ztan85@*** Department of Mathematics Hunan Institute of Science and Technology Yueyang 414006 China School of Mathematics and Statistics Central China Normal University Wuhan 430079 China School of Mathematics Georgia Institute of Technology Atlanta GA 30332 USA School of Mathematical Sciences Xiamen University Xiamen 361005 China

We investigate the zero dissipation limit problem of the one-dimensional compressible isentropic Navier-Stokes equations with Riemann initial data in the case of the composite wave of two shock waves.It is shown that the unique solution to the Navier-Stokes equations exists for all time,and converges to the Riemann solution to the corresponding Euler equations with the same Riemann initial data uniformly on the set away from the shocks,as the viscosity vanishes.In contrast to previous related works,where either the composite wave is absent or the efects of initial layers are ignored,this gives the frst mathematical justifcation of this limit for the compressible isentropic Navier-Stokes equations in the presence of both composite wave and initial layers.Our method of proof consists of a scaling argument,the construction of the approximate solution and delicate energy estimates.

关键词：可压缩Navier-Stokes方程黎曼解冲击波零功耗等熵一维数据统一欧拉方程

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一类带逻辑脉冲线性系统的最优控制问题

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应用数学 2022年第3期35卷 722-730页

作者：钟荣花韦维贵州大学数学与统计学院贵州贵阳550025 贵州师范学院数学与大数据学院贵州贵阳550018

对固定的观测时间,通过逻辑形式判断是否对动态受控系统的运行进行干预,实现目标的优化,这是生产生活实际常见的问题,这一类问题可以用带逻辑判断脉冲受控系统的最优控制问题进行描述.本文主要研究这一类最优控制问题,首先运用矩阵半张... 详细信息

对固定的观测时间,通过逻辑形式判断是否对动态受控系统的运行进行干预,实现目标的优化,这是生产生活实际常见的问题,这一类问题可以用带逻辑判断脉冲受控系统的最优控制问题进行描述.本文主要研究这一类最优控制问题,首先运用矩阵半张量积方法,将带有逻辑判断的脉冲表达式转换为代数表达式,然后通过Banach压缩映像原理,证明了受控系统解的存在唯一性;进而使用Mazur定理证明最优控制的存在性;最后,给出控制取值集U为全空间或开集情形下的最优性条件.作为应用,论文还给出一个模拟仿真的实例.

关键词：逻辑线性脉冲系统最优控制矩阵半张量积存在性最优性条件

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