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Journal of Ocean University of China 2021年第5期20卷 1276-1284页

作者： FU Wandong liao miaofei ZHANG Dongxu ZHOU Yufang YANG Huicheng Zhejiang Marine Development Research Institute Zhoushan 316021China Marine Fishery Institute of Zhejiang Province Key Laboratory of Mariculture&Enhancement of Zhejiang ProvinceZhoushan 316021China

A bioflocculant producing potential bacteria was isolated from the circulating seawater of bio-filter using streak plate *** bacteria was identified through biochemical characteristics,partial 16S ribosomal ribonucleic acids(rRNA),nucleo-tide sequencing,and BLAST analysis of the gene sequence that showed the bacteria have 99%similarity to Pseudoalteromonas *** deposited in GenBank as Pseudoalteromonas ***8 with accession number *** of time course assay,carbon sources,nitrogen sources,inoculum size,as well as initial pH on the bacteria producing extracellular bioflocculant activity were *** results showed that the strain optimal production period of microbial bioflocculant was at 72 h(flocculating activity of 94.5%),then dropped *** bacteria optimally produced the bioflocculant when 1.0%sucrose and 0.5%sodium nitrate were used as sole sources of carbon and nitrogen with flocculating activities of 92.8%and 93.8%***,the bacteria produced the bioflocculant optimally when initial pH of the medium was 5.0(flocculating activity 93.2%),and when Ca^(2+)was used as cation(flocculating activity 93.4%).The culture condition of inoculum size of 3%(v/v)was optimal flocculant pro-duction(flocculating activity 94.4%).Composition analyses indicated the bioflocculant to be principally a glycoprotein made up of about 34.3%protein and 63.4%total carbohydrate.

关键词： Pseudomonas sp.NUM8 bioflocculant flocculating activity circulating seawater

Construction and Characterization of Gal-Chitosan Graft Methoxy Poly(Ethylene Glycol)(Gal-CS-mPEG) Nanoparticles as Efficient Gene Carrier

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Journal of Ocean University of China 2017年第5期16卷 873-881页

作者： JIN Jiting FU Wandong liao miaofei HAN Baoqin CHANG Jing YANG Yan College of Marine Life Sciences Ocean University of China Qingdao 266003 P. R. China Zhejiang Research Institute of Marine Development Zhoushan 316100 P. R. China

In the present study, galactosylated chitosan(Gal-CS) was conjugated with methoxy poly(ethylene glycol)(m PEG) as a hydrophilic group. The structure of Gal-CS-m PEG polymer was characterized and the nanoparticles(NPs) were prepared using ironic gelation method. The study was designed to investigate the characteristics and functions of Gal-CS-m PEG NPs. The morphology of Gal-CS-m PEG NPs was observed by SEM and it was a compact and spherical shape. The size of the NPs was approximately 200 nm in diameter under the ideal process parameters. The interaction between Gal-CS-m PEG NPs and p DNA, and the protection of p DNA against DNase I and serum degradation by Gal-CS-m PEG NPs were evaluated. Agarose gel electrophoresis results showed that Gal-CS-m PEG NPs had strong interaction with p DNA at the weight ratio of 12:1, 4:1 and 2:1 and could protect p DNA from DNase I and serum degradation. Gal-CS-m PEG NPs exhibited high loading efficiency and sustainable in vitro release. The blood compatibility studies demonstrated that Gal-CS-m PEG NPs had superior compatibility with erythrocytes in terms of aggregation degree and hemolysis level. Gal-CS-m PEG NPs showed no cytotoxicity on L929 cells, which is a normal mouse connective tissue fibroblast, but showed inhibitory effects on the proliferation of Bel-7402 cells, which is a liver cancer cell line. In conclusion, Gal-CS-m PEG NP is a bio-safe and efficient gene carrier with potential application in gene delivery.

关键词： DNA chitosan methoxy DNase compatibility Ethylene spherical hydrophilic conjugated sustainable

南极磷虾油对硫酸葡聚糖钠盐诱导溃疡性结肠炎小鼠的抗氧化作用机制

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食品科学 2022年第1期43卷 156-163页

作者：周晓玲相兴伟周宇芳郑斌邓尚贵廖妙飞闻正顺浙江海洋大学食品与药学学院浙江舟山316022 浙江省海洋开发研究院浙江舟山316021 浙江工业大学食品科学与工程学院浙江杭州310014

目的:探讨南极磷虾油(Antarctic krill oil,AKO)对硫酸葡聚糖钠盐(dextran sulfate sodium,DSS)诱导溃疡性结肠炎(ulcerative colitis,UC)小鼠的抗氧化作用及其机制。方法:BALB/c小鼠随机分成4组:对照组、DSS组、低剂量AKO组(L-AKO,0.25 g/(kg m_(b)·d))和高剂量AKO组(H-AKO,0.5 g/(kg m_(b)·d))。通过在小鼠饮水中连续一周添加含质量分数3.5%的DSS诱导小鼠以产生UC。处死小鼠后收集其结肠组织,使用苏木精-伊红染色观察组织切片结构变化,并测定结肠组织中的谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)、超氧化物歧化酶(superoxide dismutase,SOD)的活力,以及白细胞介素-6(interleukin-6,IL-6)、肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、内毒素(lipopolysaccharides,LPS)、二胺氧化酶(diamine oxidase,DAO)的水平;利用实时荧光定量聚合酶链式反应(quantitative polymerase chain reaction,qPCR)、蛋白免疫印迹(Western blot)进一步测定小鼠结肠中核因子E2相关因子2(nuclear factor erythroid 2-related factor 2,Nrf2)/Keap1信号通路相关基因及关键蛋白表达水平。结果:H-AKO处理不仅可以改善DSS干预后造成的结肠组织损伤,还可以显著提高其抗氧化酶基因(GSH-Px、SOD)的表达(P<0.05),显著降低炎症因子和肠道通透性指标(IL-6、TNF-α、LPS、DAO)的水平(P<0.05)。qPCR结果表明相较于DSS模型组,H-AKO干预除了能提高结肠组织中Nrf2基因表达,还能提高GSH-Px、SOD和HO-1基因表达。Western blot结果显示,AKO处理使UC小鼠结肠Nrf2蛋白水平增加,Keap1蛋白水平表达降低,提示Nrf2/Keap1信号通路被激活。结论:AKO对UC小鼠的抗氧化保护作用可能是通过调节Nrf2/Keap1信号通路相关基因和蛋白表达,增强体内抗氧化酶水平的表达,从而实现改善机体氧化应激损伤、炎症反应和恢复肠道屏障结构与功能。

关键词：南极磷虾油溃疡性结肠炎核因子E2相关因子2 抗氧化炎症

Fatigue Strength Analysis of Dissimilar Aluminum Alloy TIG Welds

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 265-274页

作者： liao Xiangyun WANG Ruijie LIU Guoshou ZHAO Pinglin Faculty of Mechanical and Electrical Engineering Kunming University of Science and TechnologyKunming 650500China Faculty of Civil Engineering and Mechanics Kunming University of Science and TechnologyKunming 650500China

The constant amplitude loading fatigue tests were carried out on the 6061/7075 aluminum alloy TIG fillet welded lap specimens in this study,and the weld seam cross-section hardness was *** experimental results show that most specimens mainly failed at the 7075 side weld toes even though the base material tensile strength of 7075 is higher than that of *** maximum stress-strain concentration in the two finite element models is located at the 7075 side weld toe,which is basically consistent with the actual fracture *** weld zone on the 7075 side experiences severe material softening,with a large ***,the Vickers hardness value on the 6061 side negligibly changes and fluctuates around 70 *** obvious defects are found on the fatigue fracture,but a large number of secondary cracks *** germinate from the weld toe and propagate in the direction of the plate *** reinforcement has a serious impact on fatigue *** life will decrease exponentially as the weld reinforcement increases under low *** is found that the notch stress method can give a better fatigue life prediction for TIG weldments,and the errors of the predicted results are within the range of two factors,while the prediction accuracy decreases under low *** equivalent structural stress method can also be used for fatigue life prediction of TIG weldments,but the errors of prediction results are within the range of three factors,and the accuracy decreases under high stress.

关键词： TIG welding notch stress method equivalent structural stress method fatigue life finite element analysis

Enhancing Deepfake Detection:Proactive Forensics Techniques Using Digital Watermarking

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Computers, Materials & Continua 2025年第1期82卷 73-102页

作者： Zhimao Lai Saad Arif Cong Feng Guangjun liao Chuntao Wang School of Automation Guangdong University and TechnologyGuangzhou510006China School of Immigration Administration(Guangzhou) China People’s Police UniversityGuangzhou510663China Department of Mechanical Engineering College of EngineeringKing Faisal UniversityAl Ahsa31982Saudi Arabia Cyber Police Division Guangzhou Public Security BureauGuangzhou510030China School of Forensic Science and Technology Guangdong Police CollegeGuangzhou510320China College of Mathematics and Informatics South China Agricultural UniversityGuangzhou510642China

With the rapid advancement of visual generative models such as Generative Adversarial Networks(GANs)and stable Diffusion,the creation of highly realistic Deepfake through automated forgery has significantly *** paper examines the advancements inDeepfake detection and defense technologies,emphasizing the shift from passive detection methods to proactive digital watermarking *** detection methods,which involve extracting features from images or videos to identify forgeries,encounter challenges such as poor performance against unknown manipulation techniques and susceptibility to counter-forensic *** contrast,proactive digital watermarking techniques embed specificmarkers into images or videos,facilitating real-time detection and traceability,thereby providing a preemptive defense againstDeepfake *** offer a comprehensive analysis of digitalwatermarking-based forensic techniques,discussing their advantages over passivemethods and highlighting four key benefits:real-time detection,embedded defense,resistance to tampering,and provision of legal ***,the paper identifies gaps in the literature concerning proactive forensic techniques and suggests future research directions,including cross-domain watermarking and adaptive watermarking *** systematically classifying and comparing existing techniques,this review aims to contribute valuable insights for the development of more effective proactive defense strategies in Deepfake forensics.

关键词： Deepfake proactive forensics digital watermarking traceability detection techniques

虾肽对过氧化氢诱导RAW 264.7细胞氧化损伤的保护作用

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食品与发酵工业 2021年第17期47卷 126-132页

作者：邵婉王芮周宇芳相兴伟孙继鹏王家星廖妙飞邓尚贵郑斌浙江海洋大学食品与医药学院浙江舟山316021 浙江省海洋开发研究院浙江舟山316021 浙江工业大学食品科学与工程学院浙江杭州310014

为研究虾肽对H_(2)O_(2)诱导的RAW 264.7细胞氧化损伤的保护作用,利用CCK-8法检测不同剂量虾肽对RAW 264.7细胞的存活率的影响,通过酶联免疫试剂盒和荧光实时定量PCR检测细胞因子和mRNA的表达水平;Western Blotting检测细胞中核因子E2... 详细信息

为研究虾肽对H_(2)O_(2)诱导的RAW 264.7细胞氧化损伤的保护作用,利用CCK-8法检测不同剂量虾肽对RAW 264.7细胞的存活率的影响,通过酶联免疫试剂盒和荧光实时定量PCR检测细胞因子和mRNA的表达水平;Western Blotting检测细胞中核因子E2相关因子2(nuclear factor E2-related factor 2,Nrf2)、Kelch样环氧氯丙烷相关蛋白1(Kelch like-ECH-associated protein 1,Keap1)蛋白含量的变化。结果表明,提前给予虾肽干预的细胞的存活率明显增加,虾肽能提高细胞内超氧化物歧化酶(superoxide dismutase,SOD)、谷胱甘肽过氧化酶和过氧化氢酶的活力,而且细胞内SOD 1、谷胱甘肽过氧化物酶1、Nrf2、醌氧化还原酶1、血红素加氧酶-1 mRNA的表达量显著升高(P<0.05)。此外,细胞内Keap1蛋白相对表达量显著降低,而Nrf2蛋白相对表达量显著升高(P<0.05),说明提前给予虾肽干预对H_(2)O_(2)诱导RAW 264.7细胞氧化应激具有预防保护作用,其作用机制与激活Nrf2/Keap1通路有关。

关键词：虾肽过氧化氢 RAW 264.7细胞氧化损伤保护

High-temperature-tolerant flexible supercapacitors: Gel polymer electrolytes and electrode materials

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Journal of Energy Chemistry 2025年第1期100卷 426-457页

作者： Chong Peng Xinyi Huang Mingwei Zhao Shuling liao Quanhong Yang Nianjun Yang Siyu Yu School of Chemistry & Chemical Engineering Southwest University Nanoyang Group Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage School of Chemical Engineering and Technology and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Department of Chemistry & IMO-IMOMEC Hasselt University

The development of flexible supercapacitors(FSCs) capable of operating at high temperatures is crucial for expanding the application areas and operating conditions of supercapacitors. Gel polymer electrolytes and electrode materials stand as two key components that significantly impact the efficacy of hightemperature-tolerant FSCs(HT-FSCs). They should not only exhibit high electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing their thermal stability while maintaining high electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art progress and achievements in HT-FSCs, with a focus on thermally stable gel polymer electrolytes and electrode materials is provided. Finally, challenges and future perspectives regarding HT-FSCs are discussed, alongside strategies for elevating operational temperatures and *** review offers both theoretical foundations and practical guidelines for designing and manufacturing HT-FSCs, further promoting their widespread adoption across diverse fields.

关键词： Polymer membrane electrodes

厚壳贻贝多糖对葡聚糖硫酸钠诱导的结肠炎改善作用

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食品与发酵工业 2021年第7期47卷 109-115页

作者：姚丽文周宇芳孙继鹏王家星廖妙飞郑斌王芮邓尚贵相兴伟浙江海洋大学食品与医药学院浙江舟山316021 浙江省海洋开发研究院浙江舟山316021 浙江工业大学食品科学与工程学院浙江杭州310014

为了探讨厚壳贻贝多糖(Mytilus coruscus polysaccharide,MP)对葡聚糖硫酸钠(dextran sodium sulfate,DSS)诱导的结肠炎的改善作用,试验设置空白组、模型组和MP组(300 mg/kg),在日常饮用水中给予质量分数3.5%DSS构建结肠炎模型,通过观... 详细信息

为了探讨厚壳贻贝多糖(Mytilus coruscus polysaccharide,MP)对葡聚糖硫酸钠(dextran sodium sulfate,DSS)诱导的结肠炎的改善作用,试验设置空白组、模型组和MP组(300 mg/kg),在日常饮用水中给予质量分数3.5%DSS构建结肠炎模型,通过观察小鼠体态表征、肠道组织形态、测定肠道和血清细胞因子水平,研究MP对小鼠结肠炎的影响。结果表明:与模型组相比,MP组显著缓解了小鼠体重的降低、结肠长度的缩短(P<0.05),并降低疾病活动指数,改善炎性细胞浸润、腺体水肿以及杯状细胞的减少,MP组结肠组织中超氧化物歧化酶(superoxide dismutase,SOD)和谷胱甘肽还原酶(flutathione peroxidase,GSH-Px)以及血清中的GSH-Px活性显著增高(P<0.05),血清中的SOD有所升高但无显著性差异。结肠组织和血清中的肿瘤坏死因子-α含量显著降低(P<0.05),白细胞介素-6含量有所降低但无显著性差异。该研究证明MP能在一定程度上改善由DSS诱导的结肠炎。

关键词：厚壳贻贝多糖结肠炎葡聚糖硫酸钠抗氧化炎症反应

金枪鱼骨胶原肽对葡聚糖硫酸钠诱导急性结肠炎小鼠的预防效果

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食品工业科技 2021年第8期42卷 326-332页

作者：舒聪涵相兴伟孙继鹏王家星廖妙飞邓尚贵周宇芳郑斌浙江海洋大学食品与药学学院浙江舟山316021 浙江省海洋开发研究院浙江舟山316021 浙江工业大学浙江杭州310000

目的:研究金枪鱼骨胶原肽对葡聚糖硫酸钠(dextran sulfate sodium,DSS)诱导急性溃疡性结肠炎小鼠的预防效果。方法:将小鼠随机分为正常组、造模组、骨胶原肽组,正常组和造模组小鼠每日灌胃生理盐水,骨胶原肽组每日灌胃300 mg/kg的骨胶... 详细信息

目的:研究金枪鱼骨胶原肽对葡聚糖硫酸钠(dextran sulfate sodium,DSS)诱导急性溃疡性结肠炎小鼠的预防效果。方法:将小鼠随机分为正常组、造模组、骨胶原肽组,正常组和造模组小鼠每日灌胃生理盐水,骨胶原肽组每日灌胃300 mg/kg的骨胶原肽。除正常组外,造模组和骨胶原肽组采用3.5%的DSS自由饮用8 d建立小鼠急性溃疡性结肠炎模型。记录每日小鼠体重,评价疾病活动指数(disease activity index,DAI),测定脏器指数,留取结肠组织测量长度并对其进行HE染色,观察病理变化。运用酶联免疫法(ELISA)检测血清和结肠组织中肠道黏膜屏障损伤指标内毒素(LPS)、二胺氧化酶(DAO)的含量以及抗氧化损伤指标超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)的活力。结果:与正常组相比,造模组小鼠的体重下降,DAI评分明显升高,肝脾肿大,胸腺萎缩,同时结肠长度显著缩短并且病理损害严重。与造模组相比,骨胶原肽灌胃后小鼠血清和结肠组织中LPS和DAO水平均极显著降低(P<0.01),SOD和GSH-Px活力均极显著升高(P<0.01)。结论:金枪鱼骨胶原肽具有减轻急性溃疡性结肠炎症状的作用,推测其通过修复肠道损伤,提高机体抗氧化能力发挥结肠炎预防保护作用。

关键词：金枪鱼骨胶原肽急性溃疡性结肠炎抗氧化活性肠道损伤

A six-variable quasi-3D isogeometric approach for free vibration of functionally graded graphene origami-enabled auxetic metamaterial plates submerged in a fluid medium

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 157-176页

作者： Wei CHEN Zhihong TANG Yufen liao Linxin PENG College of Civil Engineering University of South China College of Civil Engineering and Architecture Guangxi University Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education Guangxi University

This paper presents, for the first time, an effective numerical approach based on the isogeometric analysis(IGA) and the six-variable quasi-three dimensional(3D)higher-order shear deformation theory(HSDT) to study the free vibration characteristics of functionally-graded(FG) graphene origami(GOri)-enabled auxetic metamaterial(GOEAM) plates submerged in a fluid medium. The plate theory incorporates the thickness stretching and the effects of transverse shear deformation without using any shear correction factors. The velocity potential function and Bernoulli's equation are used to derive the hydrodynamic pressure acting on the plate surface. Both horizontally and vertically immersed plate configurations are considered here in the form of inertia *** plates are composed of multilayer GOEAMs, with the GOri content varying through the plate's thickness in a layer-wise manner. This design results in graded auxetic *** material properties are evaluated by mixing rules and a genetic programming(GP)-assisted micromechanical model. The governing equations of motion for the FG-GOEAM plates immersed in a fluid medium are derived by Hamilton's principle. After validating the convergence and accuracy of the present model, a comprehensive parametric study is carried out to examine the effects of the GOri content, GOri distribution pattern, GOri folding degree, fluid level, immersed depth, and geometric parameter on the natural frequencies of the FG-GOEAM plates. The results show that the natural frequencies for the four GOri distribution patterns increase with the increase in the layer number when the lay number is fewer than 10, and then stabilize after the layer number reaches ***, in general, the natural frequency of the FG-GOEAM plate in a vacuum or fluid increases when the GOri content increases, while decreases when the GOri folding degree increases. Some additional findings related to the numerical results are presented in the conclusions. It is belie

关键词： Equations of motion