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此心安处是吾乡:“阿凡达”系列电影恋地情结探析

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电影评介 2024年第2期 87-92页

作者：刘景福厦门理工学院设计艺术学院

“阿凡达”系列电影因其别出心裁的设计、震撼视听的奇观而成为时代经典。本文从人本主义地理学关键概念“恋地情结”来对该片进行尝试性解读。“恋地情结”(Topophilia)由美国诗人奥登(***)1948年最早提出,随后法国哲学家加斯东·巴舍... 详细信息

“阿凡达”系列电影因其别出心裁的设计、震撼视听的奇观而成为时代经典。本文从人本主义地理学关键概念“恋地情结”来对该片进行尝试性解读。“恋地情结”(Topophilia)由美国诗人奥登(***)1948年最早提出,随后法国哲学家加斯东·巴舍拉(Gaston Bachelard)将其用于空间研究[1],再后来美籍华裔学者段义孚(Yi-Fu Tuan)在其专著《恋地情结》里对这一概念做了系统性发展.

关键词：系列电影奥登恋地情结段义孚阿凡达关键概念

原位合成TiC颗粒增强铝基复合材料研究进展

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中国有色金属学报 2024年第2期34卷 473-489页

作者：庄伟彬覃龙健贾婧李菁辉刘敬福孟超辽宁工程技术大学材料科学与工程学院阜新123000

原位合成TiC颗粒增强铝基复合材料具有密度小、比模量高、低热膨胀系数、热稳定性和导热性能良好,以及耐磨性能和耐有机液体和溶剂侵蚀优良等一系列优点,成为了近年来金属基复合材料的研究热点。本文从反应体系、显微组织、力学性能和... 详细信息

原位合成TiC颗粒增强铝基复合材料具有密度小、比模量高、低热膨胀系数、热稳定性和导热性能良好,以及耐磨性能和耐有机液体和溶剂侵蚀优良等一系列优点,成为了近年来金属基复合材料的研究热点。本文从反应体系、显微组织、力学性能和强化机制四个方面,综述了近年来原位合成TiC/Al复合材料的研究进展,指出了其存在的问题并展望了其发展趋势,以期为研究和开发原位合成颗粒增强铝基复合材料提供参考。

关键词：铝基复合材料原位合成碳化钛反应体系显微组织力学性能强化机制

原位合成TiB_(2)颗粒增强铝基复合材料研究进展

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功能材料 2024年第2期55卷 2063-2073页

作者：刘敬福贾婧庄伟彬覃龙健李菁辉孟超辽宁工程技术大学材料科学与工程学院辽宁阜新123000

原位合成技术制备的铝基复合材料,权衡了强度和塑性间的矛盾,有望实现铝基复合材料的结构功能一体化。原位合成TiB_(2)颗粒增强铝基复合材料比刚度,比模量高,具有优异的力学性能、耐腐蚀性能、耐磨性能和抗疲劳性能,是近年来金属基复合... 详细信息

原位合成技术制备的铝基复合材料,权衡了强度和塑性间的矛盾,有望实现铝基复合材料的结构功能一体化。原位合成TiB_(2)颗粒增强铝基复合材料比刚度,比模量高,具有优异的力学性能、耐腐蚀性能、耐磨性能和抗疲劳性能,是近年来金属基复合材料的研究热点之一,在汽车制造、高铁动车、航空航天和国防军事等领域具有广阔的应用前景。归纳了三种原位合成TiB_(2)颗粒增强铝基复合材料反应体系(Al-K_(2)TiF_(6)-KBF_(4)体系、Al-TiO_(2)-B_(2)O_(3)体系和Al-Ti-B体系)的特点和优势,概述了原位合成TiB_(2)颗粒对铝基体晶粒尺寸、界面结合和润湿性产生影响的研究现状,对TiB_(2)颗粒强化铝复合材料力学性能的作用机制展开了讨论,梳理总结现阶段在此领域研究过程中仍未解决的问题,展望TiB_(2)颗粒增强铝基复合材料的潜在发展空间,以期为研究和开发原位合成颗粒增强铝基复合材料提供参考。

关键词：铝基复合材料原位合成 TiB_(2) 反应体系显微组织强化机制

Aggregation and stability of selenium nanoparticles: Complex roles of surface coating, electrolytes and natural organic matter

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Journal of Environmental Sciences 2023年第8期130卷 14-23页

作者： Sujuan Yu Hao liu Rui Yang Wenjing Zhou jingfu liu State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science&EngineeringNorth China Electric Power UniversityBaoding 071000China

The application of selenium nanoparticles(SeNPs)as nanofertilizers may lead to the release of SeNPs into aquatic ***,the environmental behavior of SeNPs is rarely *** this study,using alginate-coated SeNPs(Alg-SeNPs)and polyvinyl alcohol-coated SeNPs(PVA-SeNPs)as models,we systematically investigated the aggregation and stability of SeNPs under various water ***-SeNPs were highly stable in mono-and polyvalent electrolytes,probably due to the strong steric hindrance of the capping ***-SeNPs only suffered from a limited increase in size,even at 2500 mmol/L NaCl and 200 mmol/L MgCl_(2),while they underwent apparent aggregation in CaCl_(2) and LaCl_(3) *** binding of Ca^(2+) and La^(3+) with the guluronic acid part in alginate induced the formation of cross-linking *** organic matter enhanced the stability of Alg-SeNPs in monovalent electrolytes,while accelerated the attachment of Alg-SeNPs in polyvalent electrolytes,due to the cation bridge *** long-term stability of SeNPs in natural water showed that the aggregation sizes of Alg-SeNPs and PVA-SeNPs increased to several hundreds of nanometers or above 10μm after 30 days,implying that SeNPs may be suspended in the water column or further settle down,depending on the surrounding water *** study may contribute to the deep insight into the fate and mobility of SeNPs in the aquatic *** varying fate of SeNPs in different natural waters also suggests that the risks of SeNPs to organisms living in diverse depths in the aquatic compartment should be concerned.

关键词： Selenium nanoparticles Aggregation Stability Surface coating Electrolytes Natural organic matter

Coating zirconium oxide-nanocomposite with humic acid for recovery of mercury and chromium in hazardous waste of chemical oxygen demand test

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Journal of Environmental Sciences 2023年第4期126卷 40-47页

作者： Yujian Lai Liteng Hao Lijie Dong Sujuan Yu jingfu liu State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China China Testing&Certification International Group Co. Ltd.Beijing 100024China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310024China Division of Chemical Metrology and Analytical Chemistry National Institute of MetrologyBeijing 100029China Institute of Environment and Health Jianghan UniversityWuhan 430056China

Hazardous waste of chemical oxygen demand (COD) test (HWCOD) is one of the most common laboratory wastewaters,containing large amounts of H_(2)SO_(4)and highly toxic Cr^(3+)and Hg^(2+).Current treatment methods suffered from incomplete removal of Cr^(3+)and ***,a humic acid-coated zirconium oxide-resin nanocomposite (HA-HZO-201) was fabricated for efficient recovery of Cr^(3+)and Hg^(2+)in *** synthesized HA-HZO-201 shows excellent tolerance to wide p H range (1–5) and high salinity (3.5 mol/L Na Cl),as well as adsorption capacity for Cr^(3+)(37.5 mg/g) and Hg^(2+)(121.3 mg/g).After treating with HA-HZO-201 by using a fixed-bed adsorption procedure,the final Cr^(3+)and Hg^(2+)concentrations in HWCOD decreased to 0.28 and 0.02 mg/L,*** addition,the HA-HZO-201 can be regenerated by desorption and recovery of Cr^(3+)and Hg^(2+)using HNO_(3)and thiourea as eluents,*** 5 cycles of adsorption/desorption,the removal efficiencies still reach up to86.0%for Cr^(3+)and 89.7%for Hg^(2+),indicating an excellent regeneration of *** hope this work open new opportunities for treatment of HWCODwith high-efficiency and low-cost.

关键词： COD analysis wastewater Nanocomposite ZrO_(2) Resin Humic acid

Blockage of ATPase-mediated energy supply inducing metabolic disturbances in algal cells under silver nanoparticles stress

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Journal of Environmental Sciences 2023年第9期131卷 141-150页

作者： Ruohua Qu Mi Chen jingfu liu Qiting Xie Na liu Fei Ge Department of Environment College of Environment and ResourcesXiangtan UniversityXiangtan 411105China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Adenosine triphosphate(ATP)generation of aquatic organisms is often subject to nanoparticles(NPs)stress,involving extensive reprogramming of gene expression and changes in enzyme activity accompanied by metabolic ***,little is known about the mechanism of energy supply by ATP to regulate the metabolism of aquatic organisms under NPs ***,we selected extensively existing silver nanoparticles(AgNPs)to investigate their implications on ATP generation and relevant metabolic pathways in alga(Chlorella vulgaris).Results showed that ATP content significantly decreased by 94.2%of the control(without AgNPs)in the algal cells at 0.20 mg/L AgNPs,which was mainly attributed to the reduction of chloroplast ATPase activity(81.4%)and the downregulation of ATPase-coding genes atpB and atpH(74.5%-82.8%)in *** dynamics simulations demonstrated that AgNPs competed with the binding sites of substrates adenosine diphosphate and inorganic phosphate by forming a stable complex with ATPase subunit beta,potentially resulting in the reduced binding efficiency of ***,metabolomics analysis proved that the ATP content positively correlated with the content of most differential metabolites such as D-talose,myo-inositol,and *** remarkably inhibited ATPinvolving metabolic pathways,including inositol phosphate metabolism,phosphatidylinositol signaling system,glycerophospholipid metabolism,aminoacyl-tRNA biosynthesis,and glutathione *** results could provide a deep understanding of energy supply in regulating metabolic disturbances under NPs stress.

关键词： Adenosine triphosphate Metabolomics Molecular dynamics simulations Nanoparticles Algae

黑碳在环境中的赋存、时空分布及迁移转化特征

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环境化学 2024年第6期43卷 1980-1995页

作者：盛雪莹刘景富赖余建于素娟陈钰杭周庆祥中国石油大学(北京) 北京102249 南方科技大学环境科学与工程学院深圳518055 北京科技大学能源与环境工程学院北京100083 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室北京100085

黑碳(black carbon,BC)作为典型的颗粒污染物,具有复杂的组成,能够对空气质量、生态环境甚至人体健康产生深远的影响.深入探究BC的赋存、分布特征和迁移转化过程,对深刻理解其对气候变化、大气污染控制、健康效应的影响具有重要意义.BC... 详细信息

黑碳(black carbon,BC)作为典型的颗粒污染物,具有复杂的组成,能够对空气质量、生态环境甚至人体健康产生深远的影响.深入探究BC的赋存、分布特征和迁移转化过程,对深刻理解其对气候变化、大气污染控制、健康效应的影响具有重要意义.BC来源于自然和人为活动,并可在水-气-固三相间跨介质传输,增加了其溯源解析研究的难度.BC的时空分布受诸多种因素影响,包括地理、气象和排放源等,其研究极具挑战性.本综述分析了BC的源与汇,归纳了其在不同环境介质中赋存、时空分布特征及迁移转化,总结了其分布规律与关键影响因素,可为更好的理解“碳循环”及实施“双碳战略”提供基础理论支撑.

关键词：黑碳大气污染生态环境碳循环双碳战略

Microwave-assisted continuous flow phytosynthesis of silver nanoparticle/reduced graphene oxide composites and related visible light catalytic performance

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Journal of Environmental Sciences 2022年第5期34卷 286-293页

作者： Houyu Wang Chun-Gang Yuan Chenchen liu Xuelei Duan Qi Guo Yiwen Shen jingfu liu Yongsheng Chen Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science&EngineeringNorth China Electric Power UniversityBaoding 071000China Wetland Research Center for Baiyangdian Lake North China Electric Power UniversityBaoding 071000China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Civil and Environmental Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

The creation of an environmentally friendly synthesis method for silver nanomaterials(Ag-NPs)is an urgent concern for sustainable nanotechnology *** the present study,a novel straightforward and green method for the preparation of silver nanoparti-cle/reduced graphene oxide(AgNP/rGO)composites was successfully developed through the combination of phytosynthesis,continuous flow synthesis and *** persimmon(Diospyros kaki Thunb.)extracts were used as both plant reducing and capping agents for fast online synthesis of AgNP/rGO *** experimental param-eters were optimized and the morphologies of the prepared materials were *** characterization results reveal that spherical AgNPs were quickly synthesized and uni-formly dispersed on rGO sheets using the proposed online *** transform in-frared spectroscopy analysis confirmed that phenols,flavonoids,and other substances in the plant extracts played a decisive role in the synthesis of AgNP/rGO *** sodium borohydride(NaBH4)degradation of p-nitrophenol(4-NP)as a model,the catalytic activity of the prepared AgNP/rGO materials was *** complete degradation of 4-NP was achieved within 12 min through the use of AgNP/rGO materials,and the compos-ite had a much better catalytic activity than the bare AgNPs and rGO *** with the conventional chemical method,our online method is facile,fast,cost-efficient,and en-vironmentally friendly.

关键词： Microwave Continuous flow Phytosynthesis Silver nanocomposite Catalysis

材料热力学与动力学沉浸式教学模式研究与实践

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创新创业理论研究与实践 2024年第1期7卷 110-112,167页

作者：刘敬福李赫亮庄伟彬刘广柱辽宁工程技术大学材料科学与工程学院辽宁阜新123000

为提高研究生的创新实践能力,该文对材料科学与工程一级学科中专业核心基础课程材料热力学与动力学开展了以研究生为中心的沉浸式教学模式研究与实践,教学模式分别从设置教学目标与创设沉浸式教学环境、沉浸式教学的具体实施和沉浸式教... 详细信息

为提高研究生的创新实践能力,该文对材料科学与工程一级学科中专业核心基础课程材料热力学与动力学开展了以研究生为中心的沉浸式教学模式研究与实践,教学模式分别从设置教学目标与创设沉浸式教学环境、沉浸式教学的具体实施和沉浸式教学评价体系的建立三个方面进行研究。在教学过程中,坚持以研究生为中心和主体,采用灵活多样的沉浸式教学模式,加强互动及全程参与,重视学生创新能力的培养。实践表明:以研究生为中心的沉浸式教学模式取得了良好效果。

关键词：材料热力学与动力学研究生沉浸式教学模式创新能力创新实践