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Nutri-microbiome epidemiology,an emerging field to disentangle the interplay between nutrition and microbiome for human health

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Protein & Cell 2023年第11期14卷 787-806页

作者： Wanglong Gou zelei Miao Kui Deng Ju-Sheng Zheng Westlake Intelligent Biomarker Discovery Lab Westlake Laboratory of Life Sciences and BiomedicineHangzhou 310024China Research Center for Industries of the Future Key Laboratory of Growth Regulation and Translational Research of Zhejiang ProvinceSchool of Life SciencesWestlake UniversityHangzhou 310030China Institute of Basic Medical Sciences Westlake Institute for Advanced StudyHangzhou 310024China

Diet and nutrition have a substantial impact on the human microbiome,and interact with the microbiome,especially gut microbiome,to modulate various diseases and health status.Microbiome research has also guided the nutrition field to a more integrative direction,becoming an essential component of the rising area of precision nutrition.In this review,we provide a broad insight into the interplay among diet,nutrition,microbiome,and microbial metabolites for their roles in the human health.Among the microbiome epidemiological studies regarding the associations of diet and nutrition with microbiome and its derived metabolites,we summarize those most reliable findings and highlight evidence for the relationships between diet and disease-associated microbiome and its functional readout.Then,the latest advances of the microbiome-based precision nutrition research and multidisciplinary integration are described.Finally,we discuss several outstanding challenges and opportunities in the field of nutri-microbiome epidemiology.

关键词： microbiome nutrition human health epidemiology

Aluminum Electroplating on AZ31 Magnesium Alloy with Acetic Anhydride Pretreatment

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Acta Metallurgica Sinica(English Letters) 2022年第12期35卷 1996-2006页

作者： zelei Zhang Atsushi Kitada Kazuhiro Fukami Kuniaki Murase Department of Materials Science and Engineering Kyoto UniversityKyoto 606-8501Japan Department of Chemical System Engineering The University of TokyoTokyo 113-8656Japan

Magnesium(Mg)alloys for metal electroplating require a surface pretreatment,i.e.,the removal of the spontaneously oxidized surface layer(MgO,Mg(OH)_(2),andMgCO_(3)).However,the use of highly toxic and/or corrosive acids in conventional pretreatment processes has become an issue.In this study,a facile and less toxic pretreatment is demonstrated and applied in aluminum(Al)electroplating.The immersion of the AZ31 Mg alloy into acetic anhydride(Ac_(2)O)removed the spontaneously oxidized surface layer and formed a thin but stable magnesium acetate(Mg(OAc)_(2))layer that protects the metal substrate from further oxidation.The Al electroplating bath is a concentrated diglyme(G2)-AlCl_(3)organic solution that can readily dissolve Mg(OAc)_(2)to enable direct plating onto a metal substrate.The as-deposited Al layer has a compact and crack-free morphology that improves the corrosion resistance and hardness(2.7 GPa).Owing to the lack of an interfacial oxidized layer,heat treatment led to the successful diff usion of Mg and Al atoms,which increased the hardness to 4.4 GPa.The Ac_(2)O pretreatment of Mg alloys enables the successful Al electroplating and subsequent heat treatment.

关键词： Magnesium alloy Surface modifi cation Electrodeposition Hardness Corrosion resistance

Annealing,solvation,and mirror-plating effects in phosphonium chloroaluminate ionic liquids

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Nano Research 2023年第2期16卷 3348-3357页

The physicochemical properties of a specific ionic liquid(IL)are naturally considered to be constant at a given temperature.However,a series of eutectic melts of trihexyl(tetradecyl)phosphonium chloride([P6,6,6,14]Cl)with aluminum chloride(AlCl3)is an exception.The viscosity of Al_(2)Cl_(7)−-dominated[P6,6,6,14]Cl–AlCl_(3)ILs(i.e.,AlCl_(3)mole fraction x=0.60–0.67)gradually increased as a function of annealing.Annealing also influenced the ultraviolet–visible spectra,nuclear magnetic resonance spectra,and the glass transition temperature of the ILs.Such annealing-induced variations in physicochemical properties were not observed in the AlCl4−-and Cl−-dominated ILs.In particular,the ionic conductivities of the ILs(x=0.60–0.67)were strongly decoupled from their viscosities during annealing.Ab initio calculations revealed the bending of the long tetradecyl chains in[P6,6,6,14]+coupled with Al_(2)Cl_(7)−,while neither Cl−nor AlCl_(4)−caused bending.In general,[P6,6,6,14]+-based ILs are recognized as sponge-like structures that consist of nano-scale polar and non-polar domains.We propose a gradual structurization process in Al_(2)Cl_(7)−-dominated ILs to account for their unusual physicochemical properties.Moreover,the addition of tetradecane,solvated in the non-polar domains of the ILs,substantially reduced the viscosity of the structured IL with x=0.67.Mirror Al electroplating is possible without a brightener,using the x=0.67 ILs,regardless of annealing or the admixture of tetradecane.

关键词： ionic liquid physicochemical property ab initio calculation electrodeposition

国内制酸尾气末端治理技术及其应用——在产教融合视角下,对《硫酸工业》教学内容改进的思考

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广东化工 2022年第13期49卷 210-212页

作者：王璐高泽磊秦茜叶新军甘肃有色冶金职业技术学院冶金与化学工程系甘肃金昌737100 金川集团股份有限公司甘肃金昌737100

课本中,符合硫酸工业可直接排放的“低浓度制酸尾气”,在新标准的颁布实施下,早已不合时宜。目前,各大硫酸生产企业在二氧化硫污染物减排方面的主流做法是增加末端治理技术,但在高职化工类专业核心课《化工工艺学》的《硫酸工业》章节... 详细信息

课本中,符合硫酸工业可直接排放的“低浓度制酸尾气”,在新标准的颁布实施下,早已不合时宜。目前,各大硫酸生产企业在二氧化硫污染物减排方面的主流做法是增加末端治理技术,但在高职化工类专业核心课《化工工艺学》的《硫酸工业》章节中并没有体现。本文介绍了硫酸工业目前普遍所采用的技术原理及特点,对比了在企业的应用情况、运行成本及环保性,为促进硫酸工业产教深度融合提供教学资料。

关键词：硫酸尾气末端治理技术应用产教融合

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钢桁架结构平推过程稳定性能研究

西安科技大学学报 2022年第4期42卷 716-723页

作者：张心纯陆泽磊周历任文辉马彦阳中铁建陕西高速公路有限公司陕西西安710064 长安大学公路学院陕西西安710064

钢桁架广泛用于组合结构工程建造中,针对钢桁架结构在平推施工过程中的失稳破坏,选取三跨钢桁架-混凝土组合结构(3 m×80 m)作为研究对象。采用空间有限元软件构建钢桁架结构的三维精细化模型,结合钢桁架实际平推过程进行特征值屈曲分析... 详细信息

钢桁架广泛用于组合结构工程建造中,针对钢桁架结构在平推施工过程中的失稳破坏,选取三跨钢桁架-混凝土组合结构(3 m×80 m)作为研究对象。采用空间有限元软件构建钢桁架结构的三维精细化模型,结合钢桁架实际平推过程进行特征值屈曲分析,计算平推过程中结构的临界荷载系数?和临界活载系数ω,对比分析平推过程最大悬臂状态和成桥状态下钢桁架结构的稳定性能,深入探究导跨比对杆件受力性能和钢桁架结构稳定性能的影响。结果表明:钢桁架结构平推过程最大悬臂状态较成桥状态时更容易失稳,平推状态第一阶临界荷载系数较成桥状态降低了13.14%,第一阶临界活载系数较成桥状态降低了10.49%。钢桁架平推过程中,弦杆以受轴向压力为主,腹杆以受剪力为主,各杆件均承受一定弯矩,杆件内力随导跨比的增大呈现下降趋势。导跨比从0.600增加到0.750时,钢桁架结构一阶屈曲特征值提高了87.43%,对结构稳定承载能力有显著影响,该成果将为钢桁架结构平推施工的精细化控制提供理论支持,提高平推施工过程的安全与质量。

关键词：结构工程钢桁架结构数值预测平推过程稳定性能

基于移动三维激光扫描技术的隧道管片错台检测

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测绘与空间地理信息 2022年第4期45卷 5-9页

作者：成枢桑泽磊吴勇郑佳佳卢建军山东科技大学测绘与空间信息学院山东青岛266500 中国电建集团华东勘测设计研究院有限公司浙江杭州310000 浙江华东测绘与工程安全技术有限公司浙江杭州310000 浙江省智慧轨道交通工程技术研究中心浙江杭州310000

地铁隧道管片错台检测是保证地铁安全运营的重要工作,传统错台检测主要依赖人工巡检,由于天窗期短、隧道结构复杂,存在效率低、易漏检、成果难以量化等缺点。本文提出了一种基于移动三维激光扫描技术的错台检测方法,通过对点云数据生成... 详细信息

地铁隧道管片错台检测是保证地铁安全运营的重要工作,传统错台检测主要依赖人工巡检,由于天窗期短、隧道结构复杂,存在效率低、易漏检、成果难以量化等缺点。本文提出了一种基于移动三维激光扫描技术的错台检测方法,通过对点云数据生成的正射影像图进行环缝识别,提取环缝两侧断面,采用RANSAC-LSM方法对断面点云进行去噪、拟合,再将两侧断面套合即可分析管片错台情况。最后以杭州地铁某区间为例进行错台检测,并选取72处错台成果进行人工复核。结果表明:基于移动三维激光扫描技术进行错台检测,整体精度在±3 mm以内,能够满足盾构隧道管片错台检测要求,在地铁隧道安全检测中具有较好的应用前景。

关键词：移动三维激光扫描地铁隧道随机采样一致性断面拟合管片错台

A passive optical fibre sensor based on Fabry-Perot interferometry for bipolar electrostatic monitoring of insulating dielectrics

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High Voltage 2023年第4期8卷 682-689页

作者： Jiawei Zhang Zifan Ye Li Wang zelei Zhang Fan Xu Weichen Dang Takao Matsumoto Sombel Diaham Chatchai Putson School of Electrical Engineering Xi'an University of TechnologyXi'anShaanxiChina Universitéde Toulouse UPSINPTLAPLACE(Laboratoire Plasma et Conversion d'Energie)Toulouse Cedex 9France Materials Physics Laboratory Department of PhysicsFaculty of SciencePrince of Songkla University(PSU)SongkhlaThailand

The measurement of the surface charge on the insulating dielectrics is critical to estimate the insulation strength of electrical equipment in operation.Unavoidable interactions with the electromagnetic field,however,generally result in distortion measurement of active sensor.Thus,it is of great significance to investigate a passive sensor for monitoring the deposited charge.Here,a passive optical fibre electrostatic sensor is developed on the principle of Fabry–Perot interference to quantify the surface potential of the insulating dielectrics.The sensitivity of quantifying the electrostatic charge is explored in terms of the wavelength shift in the interference spectrum,and the linear correlation is 0.99.Meanwhile,the sensor can identify a negative quadratic trend with the increase of the surface roughness of the insulating dielectrics.The merits of the proposed sensor such as passive monitoring,bipolar electrostatic detection,and the excellent ability of antielectromagnetic interference are highlighted in the results.Hence,this sensor can serve as an effective tool to monitor the electrostatic charge in the fields of smart electrical equipment,fuel transportation,aerospace,integrate circuit etc.

关键词： electrostatic passive fibre

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AZ91D镁合金的冷却凝固特性研究

热加工工艺 2010年第1期39卷 47-49页

作者：张泽磊杨刚杨屹卢东四川大学制造科学与工程学院四川成都610065

采用DSC对AZ91D镁合金的冷却凝固特性进行了研究。研究发现,AZ91D镁合金的液相线温度为595℃,固相线温度为470℃,液、固相线温度差为125℃,属于宽结晶温度范围低熔点合金。该合金的平均自由线收缩率为1.572%,冷却凝固时倾向于体积凝固方... 详细信息

采用DSC对AZ91D镁合金的冷却凝固特性进行了研究。研究发现,AZ91D镁合金的液相线温度为595℃,固相线温度为470℃,液、固相线温度差为125℃,属于宽结晶温度范围低熔点合金。该合金的平均自由线收缩率为1.572%,冷却凝固时倾向于体积凝固方式,容易形成粗大的离异共晶组织。

关键词： AZ91D镁合金差示扫描量热法冷却凝固特性

乡村振兴领域微腐败的行为逻辑和治理策略——基于典型案例的分析

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湖北民族大学学报（哲学社会科学版） 2022年第6期40卷 94-103页

作者：肖泽磊高源华中师范大学政治与国际关系学院

对乡村振兴中典型微腐败案例的质性分析,为正确认识和治理乡村振兴中的微腐败现象提供了新思路。通过对国家乡村振兴局违纪违规平台曝光的325个典型微腐败案例的内容分析,同时借鉴帕森斯的社会行动理论,从行为主体、行为动机、行为方式... 详细信息

对乡村振兴中典型微腐败案例的质性分析,为正确认识和治理乡村振兴中的微腐败现象提供了新思路。通过对国家乡村振兴局违纪违规平台曝光的325个典型微腐败案例的内容分析,同时借鉴帕森斯的社会行动理论,从行为主体、行为动机、行为方式、所处情境四个维度总结微腐败的行为规律、探讨微腐败的行动逻辑,并依据已有经验提出相应的治理之策。在主体差异上,要抓牢基层干部主体,不同类型精准施策;动力导向方面,要抑制投机行为表现,密切关注利益相关者;行为方式上,要严防权力程序微腐败,强化专项资金管控;聚焦特定场域,要关注重点行业领域,实施微腐败问题专项治理。

关键词：乡村振兴基层治理腐败治理社会行动理论微权力