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Fucoxanthin improves serum lipids,liver metabolism and gut microbiota in hyperlipidemia mice

Food Science and Human Wellness 2025年第1期14卷 236-249页

作者： Yonghui Zhou Jingyi Zhang Kun Xu Weihao Zhang Feng Chen Bin Liu Bingbing Guo Faculty of Environment and Life Beijing University&TechnologyBeijing 100124China Shenzhen Key Laboratory of Marine Microbiome Engineering Institute for Carbon NeutralityInstitute for Advanced StudyShenzhen UniversityShenzhen 518060China

Fucoxanthin,a kind of exclusively algae-derived carotenoids,could reduce lipid content and regulate gut microbiota composition in obese mice,showing potential in preventing *** study aimed to illustrate fucoxanthin efficacy in modulating lipid metabolism in serum and liver of high-fat-induced hyperlipidemia mice,as well as investigate the underlying association with gut microbiota *** showed that fucoxanthin significantly reduced body weight gain and body white fat of the *** the serum,total triglycerides(TG),total cholesterol(TC)contents were significantly decreased and high-densitylipoprotein cholesterol levels was significantly ***,fucoxanthin remarkedly prevented lipid accumulation in the ***,metabolomics results showed that lipids and lipid-like molecules were significantly downregulated compared with the control,indicating the advance of hepatic lipid *** acids profile in the liver was also greatly changed by ***,fucoxanthin remodeled gut microbiota composition and promoted the relative abundance of Desulfovibrio,Blautia and Clostridia ***,correlation analysis revealed that these gut microbiota changes were closely related with hepatic metabolites/metabolism and serum ***,this study showed great potential of fucoxanthin in improving serum lipids profile,hepatic lipids and bile acids metabolism of hyperlipidemia mice,which was associated with gut microbiota alteration.

关键词： Fucoxanthin Lipids Hyperlipidemia Liver metabolism Gut microbiota

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Improving high-field strain and temperature stability on KNN-based ceramics sintered in reducing atmosphere via defect engineering

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Journal of Materiomics 2024年第6期10卷 1165-1175页

作者： Zhenyong Cen Meiyi Feng Fuzhi Cao Yuqi Jiang Ze Xu Changrong Zhou Ke Wang Nengneng Luo State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures MOE Key Laboratory of New Proce sing Technology for Nonferrous Metals and MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi Univers ityNanning530004China Guangexi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin541004China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High-field strain and its temperature stability of(1-x)K_(0.48)Na_(0.52)Nb_(0.96)Ta_(0.04)O_(3)-xBaZrO_(3)+8%MnO+3%ZrO_(2)(in mole,KNNT-xBZ+8Mn)ceramics sintered in reducing atmosphere are improved simultaneously via defect design in A and B *** is a conducting type transition from n-type to p-type at x=*** BaZrO_(3) dopant not only induces the increase of defects(Zr′_(Nb),Ba_(Na),Ba_(K))concentration,but also results in the increase of defect(Mn″_(Nb))concentration,because more Mn ions as+2 oxidation state in ceramics is triggered by BaZrO3 doping *** dipoles(Mn″_(Nb)-V_(o),Zr′_(Nb)-V_(o),Ba_(Na)-V′_(Na),Ba_(Na)-V′_(Na))in poled and aged ceramics enhance the reversibility of the non-180°domains switching,which increases the high-field strain of KNNT-xBZ+8Mn *** reversibility of non-180°domain switching can be preserved to high temperature due to stable defect dipoles(Ba_(Na)-V′_(Na),Ba_(K)-V′_(K))in *** KNNT-xBZ+8Mn ceramics at x=0.07 show the largest high-field strain coefficient(543 pm/V@20 kV/cm)and the highest temperature stability(125℃).The KNNT-xBZ+8Mn ceramic is a lead-free material with great potential to be applied in the fabrication of multilayer ceramic actuators with Ni inner electrodes in the future.

关键词： Lead-free ceramics Piezoelectric materials Reducing atmosphere Defects

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Vanadium-based compounds and heterostructures as functional sulfur catalysts for lithium-sulfur battery cathodes

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Journal of Energy Chemistry 2023年第11期86卷 118-134,I0003页

作者： Xinji Dong Qiao Deng Fengxing Liang Pei Kang Shen Jinliang Zhu Cheng Tang School of Resources Environment and MaterialsState Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite StructuresGuangxi UniversityNanning 530004GuangxiChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium-sulfur(Li-S)batteries have attracted wide attention for their high theoretical energy density,low cost,and environmental ***,the shuttle effect of polysulfides and the insulation of active materials severely restrict the development of Li-S *** conductive sulfur scaffolds with catalytic conversion capability for cathodes is an efficient approach to solving above ***-based compounds and their heterostructures have recently emerged as functional sulfur catalysts supported on conductive *** compounds interact with polysulfides via different mechanisms to alleviate the shuttle effect and accelerate the redox kinetics,leading to higher Coulombic efficiency and enhanced sulfur *** on vanadium-based nanomaterials in Li-S batteries have been steadily increasing over the past several *** this review,first,we provide an overview of the synthesis of vanadium-based compounds and ***,we discuss the interactions and constitutive relationships between vanadium-based catalysts and polysulfides formed at sulfur *** summarize the mechanisms that contribute to the enhancement of electrochemical performance for various types of vanadium-based catalysts,thus providing insights for the rational design of sulfur ***,we offer a perspective on the future directions for the research and development of vanadium-based sulfur catalysts.

关键词： Vanadium-based compound Vanadium-based heterostructure Lithium-sulfur battery Sulfur catalyst Polysulfide regulation

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Recent advances in electrochemical decontamination of perfluorinated compounds from water: a review

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Frontiers of environmental Science & engineering 2023年第2期17卷 39-58页

作者： Fuqiang Liu Shengtao Jiang Shijie You Yanbiao Liu College of Environmental Science and Engineering Textile Pollution Controlling Engineering Center of the Ministry of Ecology and EnvironmentDonghua UniversityShanghai 201620China College of Life Science Taizhou UniversityTaizhou 318000China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

Per- and polyfluoroalkyl substances (PFAS) pose serious human health and environmental risks due to their persistence and toxicity. Among the available PFAS remediation options, the electrochemical approach is promising with better control. In this review, recent advances in the decontamination of PFAS from water using several state-of-the-art electrochemical strategies, including electro-oxidation, electro-adsorption, and electro-coagulation, were systematically reviewed. We aimed to elucidate their design principles, underlying working mechanisms, and the effects of operation factors (e.g., solution pH, applied voltage, and reactor configuration). The recent developments of innovative electrochemical systems and novel electrode materials were highlighted. In addition, the development of coupled processes that could overcome the shortcomings of low efficiency and high energy consumption of conventional electrochemical systems was also emphasized. This review identified several major knowledge gaps and challenges in the scalability and adaptability of efficient electrochemical systems for PFAS remediation. Materials science and system design developments are forging a path toward sustainable treatment of PFAS-contaminated water through electrochemical technologies.

关键词： Perfluorinated compounds Electrochemical approach Working mechanisms Impacting factor Coupled process

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Hydrothermal temperature-dependent compositions and copper complexing behaviors of hydrochar-derived dissolved organic matter: Insights from FT-ICR MS and multi-spectroscopic analysis

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Journal of environmental Sciences 2025年第6期152卷 685-700页

作者： Bingfa Chen Xincai Gu Muhua Feng Yanfang Feng Bingyu Wang Bensheng You Jingcheng Zheng Hong Liu Shiqun Han State Environmental Protection Key Laboratory of Aquatic Ecosystem Health in the Middle and Lower Reaches of Yangtze River Nanjing 210093China Key Laboratory of Agro-Environment in Downstream of Yangtze Plain Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and EnvironmentJiangsu Academy of Agricultural SciencesNanjing 210014China School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China School of Environmental and Biological Engineering Nanjing University of Science and TechnologyNanjing 210094China Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture School of WetlandsYancheng Teachers UniversityYancheng 224002China

The copper complexing of dissolved organic matter released from hydrochar(HDOM)affects the former’s environmental *** this study,how hydrothermal temperatures(180,220 and 260℃)influence the molecular-level constitutions and Cu(II)binding features of HDOM were elucidated via fourier transform ion cyclotron resonance mass spectrometry and multi-spectroscopic *** findings demonstrated that the almost HDOM molecules had the traits of lower polarity and higher *** the hydrothermal temperature increased,the molecules with particularly high relative strength gradually disappeared,average molecular weight,percentages of CHON and aliphatic compounds of HDOM reduced while the percentages of CHO and aromatic compounds *** general,the fluorescence quenching of Cu(II)weakened as hydrothermal temperature rose and the Cu(II)binding stability constants of fluorophores in HDOM were 4.50–*** addition,the Cu(II) binding order of fluorophores in HDOM showed temperature heterogeneities, andpolysaccharides or aromatic rings of non-fluorescent substances had the fastest responsesto Cu(II) binding. Generally, fluorescent components tend to bind Cu(II) at relatively traceconcentrations (0–40 μmol/L), whereas non-fluorescent substances tend to the bind Cu(II)at relatively higher concentrations (50–100 μmol/L). This study contributed to the predictionof the potential environmental behaviors and risks of Cu(II) at the molecular level afterhydrochar application.

关键词： Hydrochar Dissolved organic matter Molecular characterizations Cu(II)binding Two-dimensional correlation analysis(2D-COS)

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Defective Nickel-Iron Layered Double Hydroxide for Enhanced Photocatalytic NO Oxidation with Significant Alleviation of NO2 Production

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engineering 2024年第5期36卷 276-284页

作者： Xiaoyu Li Xiaoshu Lv Jian Pan Peng Chen Huihui Peng Yan Jiang Haifeng Gong Guangming Jiang Li’an Hou Engineering Research Center for Waste Oil Recovery Technology and Equipment Ministry of EducationChongqing Technology and Business UniversityChongqing 400067China State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China Environmental Technology Innovation Center of Jiande Hangzhou Bertzer Catalyst Co.Ltd.Hangzhou 310058China Chongqing Key Laboratory of Green Synthesis and Application College of ChemistryChongqing Normal UniversityChongqing 401331China

Photocatalysis offers a sustainable means for the oxidative removal of low concentrations of NOx(NO,NO2,N2O,N2O5,etc.)from the *** double hydroxides(LDHs)are promising candidate photocatalysts owing to their unique layered and tunable chemical structures and abundant surface hydroxide(OH)moieties,which are hydroxyl radical(OH)***,the practical applications of LDHs are limited by their poor charge-separation ability and insufficient active ***,we developed a facile N_(2)H_(4)-driven etching approach to introduce dual Ni^(2+)and OHvacancies(Niv and OHv,respectively)into NiFe-LDH nanosheets(hereafter referred to as NiFe-LDH-et)to facilitate improved charge-carrier separation and active Lewis acidic site(Fe^(3+)and Ni^(2+)exposed at OHv)*** contrast to inert pristine LDH,NiFe-LDH-et actively removed NO under visible-light ***,Ni_(76)Fe_(24)-LDH-et etched with 1.50 mmol·L^(-1)N_(2)H_(4)solution removed 32.8%of the NO in continuously flowing air(NO feed concentration:500 parts per billion(ppb))under visible-light illumination,thereby outperforming most reported *** and theoretical data revealed that the dual vacancies promoted the production of reactive oxygen species(O_(2)·^(-)andOH)and the adsorption of NO on the *** situ spectroscopy demonstrated that NO was preferentially adsorbed at Lewis acidic sites,particularly exposed Fe^(3+)sites,converted into NO+,and subsequently oxidized to NO3without the notable formation of the more toxic intermediate NO2,thereby alleviating risks associated with its production and emission.

关键词： Vacancie Layered double hydroxide NO+ Photocatalysis NO removal

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Feasibility Study on Recovering Human-Occupied Vehicle with An Offshore Crane

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China Ocean engineering 2024年第4期38卷 648-662页

作者： HAN Ming-yue XIE Peng XIAN Hao-yi ZHONG Xin-xin CHEN Sheng-lin SUN Tie-rui SUN Feng-lei School of Ocean Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Key Laboratory of Comprehensive Observation of Polar Environment(Sun Yat-sen University) Ministry of EducationZhuhai 519082China Guangzhou Marine Engineering Corporation Guangzhou 510250China

Launching and recovering human-occupied vehicles(HOVs)has always been a challenging *** current recovery process requires staff to manually complete the tethering task,which is inefficient and endangers the lives of *** paper suggests moving the recovery position from the surface to underwater at approximately half the wavelength of the water depth(30−50 m underwater),where the HOV experiences less environmental *** ROV equipped with a ultra-short baseline beacon(USBL)and a manipulator was used to complete the tethering ***,a shackle customized to the shape of the manipulator’s gripper is fitted to the end of the cable to simplify the tethering *** investigate the dynamic response of recovering the HOV using this suggested method,a comprehensive numerical model is developed in this *** effects of wind,surface waves,ocean currents,and nonlinear interaction between the installation vessel and the HOV are quantitatively *** results show that the proposed recovery method can reduce the motion amplitude of the HOV and that the wave has the greatest influence on the dynamic response of the HOV during the recovery *** model provides better insight into the proposed HOV recovery method and confirms the effectiveness of the heave compensation *** proposed approach aims to enhance safety and operational efficiency by reducing direct human involvement in the recovery process and mitigating potential *** finding holds particular significance,especially in environmentally sensitive areas,where reducing the impact on the surrounding ecosystem is crucial.

关键词： human-occupied vehicle recovery dynamic response active heave compensation

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Impact of seepage flow on sediment resuspension by internal solitary waves:parameterization and mechanism

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Journal of Oceanology and Limnology 2023年第2期41卷 444-457页

作者： Zhuangcai TIAN Chao LIU Ziyin REN Xiujun GUO Mingwei ZHANG Xiuhai WANG Lei SONG Yonggang JIA State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and TechnologyXuzhou 221116China Key Laboratory of Coastal Science and Integrated Management Ministry of Natural ResourcesQingdao 266061China Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering Ocean University of ChinaQingdao 266100China

Sediment incipient motion is the first step in sediment *** studies ignored the effect of seepage flow on the mobility of sediment particles and simplified the seabed surface as a rigid boundary.A flume experiment was designed to innovatively divide the seabed into two parts to control the dynamic response of the seabed and control the seepage *** the experiment,the seabed sediments and the amplitude of internal solitary waves(ISWs)were changed to compare and analyze the impact of seepage flow on the sediment resuspension by shoaling ***,parametric research and verification were carried *** indicate that seepage flow can greatly influence fine sand,promote sediment resuspension,and increase the amount of suspension by two times on ***,seepage flow had a little effect on the suspension of clayey silt and sandy ***,seepage force was added to the traditional gravity,drag force,and uplift force,and the parameterization of threshold starting shear stress of coarse-grained sediments was *** results of this parameterization were verified,and seepage force was critical to *** threshold starting shear stress was reduced by 54.6%after increasing the seepage *** physical mechanism of this process corresponded to the vertical reciprocating transient seepage in and out the seabed interface caused by the wave-induced transient excess pore water *** quantitative study on seepage flow for shear stress of coarse-grained sediments induced by ISWs is critical to geohazard assessment.

关键词： internal waves seepage flow sediment resuspension parameterization mechanism

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Mechanisms of water layer thickness and ullage height on crude oil boilover:A theoretical model coupling the effects of multiple physical fields

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Petroleum Science 2024年第6期21卷 4405-4416页

作者： Qi Jing Cong Yan Guo-Hua Luan Yun-Tao Li Lai-Bin Zhang Yue-Yang Li Xin Li Yun-He Zhang Xing-Wang Song College of Safety and Ocean Engineering China University of PetroleumBeijing102249China CNPC Research Institute of Safety&Environment Technology Beijing102206China Key Laboratory of Oil and Gas Safety and Emergency Technology Ministry of Emergency Management Beijing102249China

Boilover is one of the most destructive tank fire scenarios.A series of experiments were conducted using eight different depths of oil pans(ranging from internal depths of 4-20 cm)to vary the water layer thickness and ullage *** results indicate that the water layer effectively cools the sidewalls,reduces the burning rate,inhibits the development of hot zones,and delays the onset of boilover in small and medium-scale ***,the ullage height affects the burning rate,formation of hot zones,intensity of the boilover,and boilover onset *** experimental data and thermodynamic analysis,both water layer thickness and fuel layer thickness were considered as variables to predict sidewall temperature at the fuel *** results were then introduced into the burning rate prediction model.A prediction model for the boilover onset time was also developed using the water layer thickness as a variable,and a thermodynamic analysis revealed the existence of a limit to the effect of water layer thickness on the boilover onset *** dynamics was introduced to analyze the boilover process at the oil-water interface,clarifying that the influence of water layer thickness and ullage height on boilover intensity primarily lies in factors such as the degree of superheat at the fuelwater *** study's findings hold significant implications for predicting and assessing fire accidents in storage tanks.

关键词： Boilover Ullage height Waterlayerthickness Burning rate Boilover onset time Boilover intensity

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A new formula of recovery factor for non-equilibrium transport of graded suspended sediment in the Middle Yangtze River

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Journal of Mountain Science 2023年第1期20卷 87-100页

作者： LI Lin-lin XIA Jun-qiang ZHOU Mei-rong DENG Shan-shan LI Zhi-wei State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan430072China School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China

Suspended sediment concentrations in the Middle Yangtze River(MYR)reduced greatly after the Three Gorges Project operation,causing the composition of bed material to coarsen ***,little is known about the non-equilibrium transport of graded suspended sediment owing to different bed material compositions(BMCs)along the MYR,and it is necessary to determine the magnitude of recovery *** the Markov stochastic process in conjunction with the hiding-exposure effect of non-uniform bed-material,a new formula is proposed for calculating the recovery factor including the effect of different BMCs,and it is incorporated into the non-equilibrium transport equation to simulate the recovery processes of suspended load in both sand-gravel bed and sand bed reaches of the *** results show that:(i)the recovery rate of graded sediment concentrations at Zhicheng was slower than that at Shashi during the period 2003-2007;(ii)the mean recovery factors of the coarse,medium,and fine sediment fractions in the ZhichengShashi reach were 0.152,0.0012,and 0.0005,respectively,and the coarse sediment recovered up to the maximum sediment concentration of 0.138 kg/m3over a distance of 15 km;and(iii)the results of the new formula that can consider the effect of bed material composition are in general agreement with the field observations,and the spatial and temporal delay effects are inversely related to particle size and ***,the BMC effect on the nonequilibrium sediment transport in different reaches of the MYR needs to be considered for higher simulation accuracy.

关键词： non-equilibrium sediment transport bed material composition transition probability recovery factor Middle Yangtze River

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