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Migration mechanism and risk assessment of perand polyfluoroalkyl substances in the Ya'Er Lake oxidation pond area,China

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Journal of Environmental Sciences 2024年第2期136卷 301-312页

作者： Chang Li Huifang Zhong Jing Wu Lingyi Meng yingjun wang Chunyang Liao Yawei wang Yujian He University of Chinese Academy of Sciences Beijing 100049China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China China National Environmental Monitoring Centre Beijing 100012China Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances Institute of Environment and HealthJianghan UniversityWuhan 430056China

The migration mechanisms,sources,and environmental risks of 29 legacy and emerging perfluorinated and polyfluoroalkyl species present in an oxidation pond(Ya'Er Lake)were investigated for treating sewage based on the analysis of their occurrence and *** concentration of per-and polyfluoroalkyl substances(PFAS)in pond area was between0.30 and 63.2 ng/g dw(dry weight),with the overall average concentration of 8.00 ng/g ***,the PFAS concentrations in the surface sediments near the sewage outlet in Pond-1(50.2 ng/g dw)and Pond-5(average 15.1 ng/g dw)were 1–2 orders of magnitude higher than those in other *** general,the legacy PFAS,i.e.,perfluorooctane sulfonic acid was considered to be the major pollutant in the polluted area,on average,accounting for 73.0%of the total concentration of PFAS *** evaluating the regional distribution of different PFAS homologs,the short-chain PFAS pollutants with lower K_(ow)were found to migrate farther in both horizontal and vertical *** sewage outlets in Pond-1 and Pond-5are the main pollution sources in polluted area and the emerging PFAS pollutants in Pond-5have replaced the legacy PFAS pollutants as the main *** on positive matrix factorization analysis,three main industrial sources of PFAS pollutants in the study area were identified:protective coating,fire-fighting,and food packaging ***,the environmental risk assessment results showed that most study areas exhibited medium environmental risk(0.01≤Risk quotient(RQ)<1),indicating that the ecological environment risks in this area need further attention.

关键词： Perfluoroalkyl substances Distribution Migration mechanism Risk assessment

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基于GPU加速的等几何拓扑优化高效多重网格求解方法

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中国机械工程 2024年第4期35卷 602-613页

作者：杨峰罗世杰杨江鸿王英俊华南理工大学机械与汽车工程学院聚合物新型成型装备国家工程研究中心广州510641 华中科技大学数字制造装备与技术国家重点实验室武汉430074

针对大规模等几何拓扑优化(ITO)计算量巨大、传统求解方法效率低的问题,提出了一种基于样条h细化的高效多重网格方程求解方法。该方法利用h细化插值得到粗细网格之间的权重信息,然后构造多重网格方法的插值矩阵,获得更准确的粗细网格映... 详细信息

针对大规模等几何拓扑优化(ITO)计算量巨大、传统求解方法效率低的问题,提出了一种基于样条h细化的高效多重网格方程求解方法。该方法利用h细化插值得到粗细网格之间的权重信息,然后构造多重网格方法的插值矩阵,获得更准确的粗细网格映射信息,从而提高求解速度。此外,对多重网格求解过程进行分析,构建其高效GPU并行算法。数值算例表明,所提出的求解方法与线性插值的多重网格共轭梯度法、代数多重网格共轭梯度法和预处理共轭梯度法相比分别取得了最高1.47、11.12和17.02的加速比。GPU并行求解相对于CPU串行求解的加速比高达33.86,显著提高了大规模线性方程组的求解效率。

关键词：等几何拓扑优化方程组求解 h细化多重网格法 GPU并行计算

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医用生物陶瓷的功能性生物适配机制及应用

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无机材料学报 2024年第1期39卷 1-16页

作者：郑嘉乾卢霄鲁亚杰王迎军王臻卢建熙华南理工大学国家人体组织功能重建工程技术研究中心广州510006 华南理工大学材料科学与工程学院广州510641 上海骨科生物材料技术创新中心上海201114 上海贝奥路生物材料有限公司上海201114 中国人民解放军空军军医大学西京医院骨科西安710032

为了获得满意的临床疗效,优质医用生物陶瓷应该具备怎样的性能一直困扰着广大研究者。自20世纪90年代以来,作者团队致力于研发医用生物陶瓷,从基础科学研究到成果转化,再到临床应用,积累了丰富的研究和应用经验,相继提出了“生物适配”... 详细信息

为了获得满意的临床疗效,优质医用生物陶瓷应该具备怎样的性能一直困扰着广大研究者。自20世纪90年代以来,作者团队致力于研发医用生物陶瓷,从基础科学研究到成果转化,再到临床应用,积累了丰富的研究和应用经验,相继提出了“生物适配”和“精准生物适配”理论。本文围绕“医用生物陶瓷(磷酸钙类材料)的功能性生物适配”这一主题分享本团队的学术研究成果和临床应用经验,从结构适配、降解适配、力学适配、应用适配等四个角度,结合骨科临床应用背景,探讨如何实现其生物适配和设计制造的有效衔接,旨在为医用生物陶瓷的设计、制造、监管和应用提供依据和建议。

关键词：生物陶瓷生物适配材料微结构生物降解骨再生血管化专题评述

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文化突围:大女主热播剧中的女性形象特征辨析

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中华女子学院学报 2024年第1期36卷 82-91页

作者：王影君上海理工大学上海外国语大学 200093

大女主热播剧是当下中国的霸屏类型剧,剧中大女主的形象均有着独立于时代的主体自我意识。其最显著的特征就是对传统形成文化突围,主要表征在三个方面:一是女性在传统家庭伦理中对生存场域的文化突围;二是在审美维度上,对传统男性审美... 详细信息

大女主热播剧是当下中国的霸屏类型剧,剧中大女主的形象均有着独立于时代的主体自我意识。其最显著的特征就是对传统形成文化突围,主要表征在三个方面:一是女性在传统家庭伦理中对生存场域的文化突围;二是在审美维度上,对传统男性审美凝视的文化突围;三是在创作技巧上,以架空剧独特的时空叙事手段,通过异质时空对传统形成文化突围。这三重文化突围的深层次原因,分别源自传统文化伦理机制的内在缝隙、大数据时代区块链承载起的群体话语权力,以及数字人文时代受众对逻辑真实的认知范式。对传统的文化突围,令大女主热播剧将虚拟娱乐和现实人生中女性对主体自我的欲求相互渗透,持续建构出深受女性受众所喜爱的艺术想象的精神乌托邦。

关键词：大女主文化突围家庭伦理架空

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全面抗战时期中共东江游击队武器来源渠道研究

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广东党史与文献研究 2024年第1期 89-99页

作者：王英俊南方医科大学马克思主义学院

1938年10月广州沦陷后,中共广东党组织即在敌后战场筹建抗日武装,开展武装斗争,并在与日伪顽军的较量中不断发展壮大。全面抗战时期,东江游击队为获得部队发展所需武器装备,付出了巨大努力。从与日伪军、国民党军及与民众互动等角度梳... 详细信息

1938年10月广州沦陷后,中共广东党组织即在敌后战场筹建抗日武装,开展武装斗争,并在与日伪顽军的较量中不断发展壮大。全面抗战时期,东江游击队为获得部队发展所需武器装备,付出了巨大努力。从与日伪军、国民党军及与民众互动等角度梳理相关史实,能较为明晰完整地呈现这一艰难的过程。而来自香港地区的有力支援,则表明地缘环境是考察中共华南革命不容忽视的因素。

关键词：抗战时期东江游击队武器装备民众武装香港地区

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Bioadaptability:An Innovative Concept for Biomaterials

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Journal of Materials Science & Technology 2016年第9期32卷 801-809页

作者： yingjun wang National Engineering Research Center for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou 510006China School of Materlals Science and Engineering South China University of TechnologyCuangzhou 510640China

Biocompatibility is the basic requirement of biomaterials for tissue repair. However, the present concept of biocompatibility has a certain limitation in explaining the phenomena involved in biomaterial-based tissue repair. New materials, in particular those for tissue engineering and regeneration, have been developed with common characteristics, i.e. they participate deeply into important chemical and biological processes in the human body and the interaction between the biomaterials and tissues is far more complex. Understanding the interplay between these biomaterials and tissues is vital for their development and functionalization. Herein, we suggest the concept of bioadaptability of biomaterials. This concept describes the three most important aspects that can determine the performance of biomaterials in tissue repair： 1） the adaptability of the micro-environment created by biomaterials to the native microenvironment in situ; 2） the adaptability of the mechanical properties of biomaterials to the native tissue; 3） the adaptability of the degradation properties of biomaterials to the new tissue formation. The concept of bioadaptability emphasizes both the material＇s characteristics and biological aspects within a certain micro-environment and molecular mechanism. It may provide new inspiration to uncover the interaction mechanism of biomaterials and tissues, to foster the new ideas of functionalization of biomaterials and to investigate the fundamental issues during the tissue repair process by biomaterials. Furthermore, designing biomaterials with such bioadaptability would open a new door for repairing and regenerating organs or tissues. In this review, we summarized the works in recent years on the bioadaptability of biomaterials for tissue repair applications.

关键词： Bioadaptability Biomaterials Functional design Tissue repair

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A novel grey wolf optimizer and its applications in 5G frequency selection surface design

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Frontiers of Information Technology & Electronic Engineering 2022年第9期23卷 1338-1353页

作者： Zhihao HE Gang JIN yingjun wang National Engineering Research Center of Novel Equipment for Polymer Processing South China University of TechnologyGuangzhou510641China Key Laboratory of Polymer Processing Engineering of the Ministry of Education South China University of TechnologyGuangzhou510641China Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing South China University of TechnologyGuangzhou510641China

In fifth-generation wireless communication system(5G),more connections are built between metaheuristics and electromagnetic equipment *** this paper,we propose a self-adaptive grey wolf optimizer(SAGWO)combined with a novel optimization model of a 5G frequency selection surface(FSS)based on FSS unit *** includes three improvement strategies,improving the initial distribution,increasing the randomness,and enhancing the local search,to accelerate the convergence and effectively avoid local *** benchmark tests,the proposed optimizer performs better than the five other optimization algorithms:original grey wolf optimizer(GWO),genetic algorithm(GA),particle swarm optimizer(PSO),improved grey wolf optimizer(IGWO),and selective opposition based grey wolf optimization(SOGWO).Due to its global searchability,SAGWO is suitable for solving the optimization problem of a 5G FSS that has a large design *** combination of SAGWO and the new FSS optimization model can automatically obtain the shape of the FSS unit with electromagnetic interference shielding capability at the center operating *** verify the performance of the proposed method,a double-layer ring FSS is designed with the purpose of providing electromagnetic interference shielding features at28 *** results show that the optimized FSS has better electromagnetic interference shielding at the center frequency and has higher angular ***,a sample of the optimized FSS is fabricated and tested.

关键词： Grey wolf optimizer Fifth-generation wireless communication system(5G) Frequency selection surface Shape optimization

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Effect of Additives on the Morphology of the Hydrated Product and Physical Properties of a Calcium Phosphate Cement

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Journal of Materials Science & Technology 2008年第2期24卷 285-288页

作者： Xiupeng wang Jiandong YE yingjun wang Key Laboratory of Specially Functional Materials （Ministry of Education） and School of Materials Science and Engineering South China University of Technology Guangzhou 510641 China

The morphology of a hydrated calcium phosphate cement （CPC） doped with several normally used additives was investigated by scanning electron microscopy （SEM） and the compressive strength of the cement was determined in this study. The hydrated products of CPC without additives was rod-like hydroxyapatite （HA） grains with around 2-5 μm in length and 100 nm in width. The addition of Sr obviously decreased the crystal size of the rod-like grains. CPCs containing carbonate, collagen and gelatin showed flake-like crystal morphology. Crylic acid-containing CPC presented flocculus-like structure. And malic acid-containing CPC exhibited oriented flake-like structure. The X-ray diffraction （XRD） analysis showed that the additives used in this study did not alter the hydration products of the cement. The compressive strength tests indicated that the compressive strength of the cement with rod-like morphology HA crystals was much higher than that of the cement with flake-like morphology HA crystals, and the cement with oriented flake-like morphology HA crystals exhibited the poorest compressive strength.

关键词： Calcium phosphate cement Morphology Apatite

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Argon Plasma-Induced Graft Polymerization of PEGMA on Chitosan Membrane Surface for Cell Adhesion Improvement

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Plasma Science and Technology 2013年第10期15卷 1041-1046页

作者： YIN Shiheng REN Li wang yingjun Analytical and Testing Center South China University of Technology Cuangzhou 510640China College of Materials Science and Engineering South China University of TechnologyGuangzhou 510640 China

For its biocompatibility and biodegradability, chitosan has had considerable atten- tion for biomedical applications in recent years. In this paper, polymerization of poly （ethylene glycol） methyl ether methacrylate （PEGMA） was grafted onto chitosan membrane surface through argon plasma-induced graft polymerization. The surface properties after modification were characterized by contact angle measurement, X-ray photoelectron spectroscopy （XPS） and atomic force microscopy （AFM）, respectively. The results indicated that PEGMA can be grafted successfully onto chitosan membrane surface. The surface hydrophilicity and free energy were improved and the surface roughness increased after modification. The adhesion of a human corneal epithelial cell （HCEC） on chitosan membrane surface was enhanced due to improvement of surface free energy and roughness.

关键词： chitosan membrane PEGMA plasma surface energy cell adhesion

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Preface to the Special Issue:Bioadaption of Biomaterials

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Journal of Materials Science & Technology 2016年第9期32卷 799-800页

作者： yingjun wang biomaterials and biomedical engineering at south china university of technology chinese academy of engineering chinese society for biomaterials national engineering research center for tissue restoration and reconstruction

Tissue repair is always a complex process and artificial biomaterials have never been perfect. For example, the mismatch of mechanical property between biomaterials and the host can result in stress shielding; the asy... 详细信息

关键词： Preface to the Special Issue Bioadaption of Biomaterials

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