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Data-driven rational design of single-atom materials for hydrogen evolution and sensing

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Nano Research 2024年第4期17卷 3352-3358页

作者： Lei zhou pengfei Tian Bowei Zhang Fu-Zhen Xuan Shanghai Key Laboratory of Intelligent Sensing and Detection Technology East China University of Science and TechnologyShanghai 200237China School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Pressure Systems and Safety of Ministry of Education East China University of Science and TechnologyShanghai 200237China

Herein we proposed a data-driven high-throughput principle to screen high-performance single-atom materials for hydrogen evolution reaction(HER)and hydrogen sensing by combing the theoretical computations and a topology-based multi-scale convolution kernel machine learning *** the rational training by 25 groups of data and prediction of all 168 groups of single-atom materials for HER and sensing,respectively,a high prediction accuracy(>0.931 R^(2) score)was achieved by our *** show that the promising HER catalysts include Pt atoms in C_(4) and Sc atoms in C_(1)N_(3) coordination ***,Y atoms in C_(4) coordination environment and Cd atoms in C_(2)N_(2)-ortho coordination environment were predicted with great potential as hydrogen sensing *** method provides a way to accelerate the discovery of innovative materials by avoiding the time-consuming empirical principles in experiments.

关键词： machine learning single-atom materials sensing hydrogen evolution

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铝镁合金铸件针孔和偏析缺陷特点及分析

铸造工程 2024年第S1期48卷 16-24页

作者：章林强周鹏飞吴振成陈辉王辉平上海航天精密机械研究所上海210016 新江科技(江苏)有限公司江苏南通226141

对铝镁合金铸件疏松、偏析类缺陷种类、形成机理及其安全使用风险进行了系统的分析,通过X射线、电镜扫描观察铸件不同程度的疏松、偏析组织的微观形貌,并结合力学性能、化学成分检测数据分析评估各类型缺陷对产品使用性能的影响,指出铝... 详细信息

对铝镁合金铸件疏松、偏析类缺陷种类、形成机理及其安全使用风险进行了系统的分析,通过X射线、电镜扫描观察铸件不同程度的疏松、偏析组织的微观形貌,并结合力学性能、化学成分检测数据分析评估各类型缺陷对产品使用性能的影响,指出铝镁合金铸件疏松、偏析缺陷安全使用的判定方法,为产品的检测和质量保证提供参考。

关键词：铝镁合金铸件针孔偏析检测缺陷分析

Corrosion engineering boosting bulk Fe_(50)Mn_(30)Co_(10)Cr_(10)high-entropy alloy as high-efficient alkaline oxygen evolution reaction electrocatalyst

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Journal of Materials Science & Technology 2022年第14期109卷 267-275页

作者： pengfei zhou Dong Liu Yuyun Chen Mingpeng Chen Yunxiao Liu Shi Chen Chi Tat Kwok Yuxin Tang Shuangpeng Wang Hui Pan Institute of Applied Physics and Materials Engineering University of Macao999078Macao Department of Physics and Chemistry Faculty of Science and TechnologyUniversity of Macao999078Macao Department of Electromechanical Engineering Faculty of Science and TechnologyUniversity of Macao999078Macao College of Chemical Engineering Fuzhou UniversityFuzhou 350116China

Oxygen evolution reaction(OER)is a critical process in electrocatalytic water ***,the development of low-cost,highly efficient OER electrocatalysts by a simple method that can be used for industrial application on a large scale is still a huge ***,high entropy alloy(HEA)has acquired extensive attention,which may provide answers to the current ***,we report bulk Fe_(50)Mn_(30)Co_(10)Cr_(10),which is prepared by 3D printing on a large scale,as electrocatalyst for OER with high catalytic ***,an easy approach,corrosion engineering,is adopted for the first time to build an active layer of honeycomb nanostructures on its surface,leading to ultrahigh OER performance with an overpotential of 247 mV to achieve a current density of 10 mA cm^(-2),a low Tafel slope of 63 mV dec^(-1),and excellent stability up to 60 h at 100 mA cm^(-2)in 1 M *** excellent catalytic activity mainly originates from:(1)the binder-free self-supported honeycomb nanostructures and multi-component hydroxides,which improve intrinsic catalytic activity,provide rich active sites,and reduce interfacial resistance;and(2)the diverse valence states for multiple active sites to enhance the OER *** findings show that corrosion engineering is a novel strategy to improve the bulk HEA catalytic *** expect that this work would open up a new avenue to fabricate large-scale HEA electrocatalysts by 3D printing and corrosion engineering for industrial applications.

关键词： Electrocatalysis High entropy alloy Corrosion engineering Self-supporting Oxygen evolution reaction

血清长链非编码RNA与稳定型冠心病患者PCI后冠状动脉微循环障碍及预后的关系研究

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实用心脑肺血管病杂志 2024年第8期32卷 8-12页

作者：马岩萍伍旭升宋磊周鹏飞上海医大医院心血管内科上海市201700 上海市同仁医院心血管内科 200336

目的探讨血清长链非编码RNA(LncRNA)X染色体失活特异转录物(XIST)、小核仁RNA宿主基因1(SNHG1)与稳定型冠心病患者PCI后冠状动脉微循环障碍(CMD)及预后的关系。方法选取2021年11月—2023年11月在上海医大医院行PCI的175例稳定型冠心病... 详细信息

目的探讨血清长链非编码RNA(LncRNA)X染色体失活特异转录物(XIST)、小核仁RNA宿主基因1(SNHG1)与稳定型冠心病患者PCI后冠状动脉微循环障碍(CMD)及预后的关系。方法选取2021年11月—2023年11月在上海医大医院行PCI的175例稳定型冠心病患者为研究对象,根据患者PCI后是否伴有CMD将其分为CMD组(n=63)和非CMD组(n=112)。收集患者一般资料、冠状动脉生理学指标〔血流储备分数(FFR)、冠状动脉血流储备(CFR)及冠状动脉微循环阻力指数(IMR)〕及血清LncRNA XIST、SNHG1。所有患者于PCI后6个月进行随访,记录其主要不良心血管事件(MACE)发生情况,若患者发生MACE则判定为预后不良。采用Pearson相关分析探讨稳定型冠心病患者PCI后IMR与血清LncRNA XIST、SNHG1的关系;稳定型冠心病患者PCI后预后不良的影响因素分析采用多因素Logistic回归分析。结果CMD组IMR、血清LncRNA XIST高于非CMD组,血清LncRNA SNHG1低于非CMD组(P<0.05)。Pearson相关分析结果显示,稳定型冠心病患者PCI后IMR与血清LncRNA XIST呈正相关(r=0.525,P<0.001),与血清LncRNA SNHG1呈负相关(r=-0.515,P<0.001)。175例患者中,预后不良61例,预后良好114例。预后不良者FFR、CFR、血清LncRNA SNHG1低于预后良好者,IMR、血清LncRNA XIST、CMD发生率高于预后良好者(P<0.05)。多因素Logistic回归分析结果显示,FFR、CFR、血清LncRNA SNHG1升高是稳定型冠心病患者PCI后预后不良的保护因素,IMR、血清LncRNA XIST升高是稳定型冠心病患者PCI后预后不良的危险因素(P<0.05)。结论血清LncRNA XIST、SNHG1与稳定型冠心病患者PCI后发生CMD相关,且血清LncRNA XIST升高是稳定型冠心病患者PCI后预后不良的危险因素,而血清LncRNA SNHG1升高是其保护因素。

关键词：冠心病经皮冠状动脉介入治疗长链非编码RNA 冠状动脉微循环障碍预后

Multiplex genome editing targeting soybean with ultra-low anti-nutritive oligosaccharides

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The Crop Journal 2023年第3期11卷 825-831页

作者： Wenxin Lin Huaqin Kuang Mengyan Bai Xiaomeng Jiang pengfei zhou Yinghua Li Bo Chen Huarong Li Yuefeng Guan College of Resources and Environment Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design Guangzhou Key Laboratory of Crop Gene EditingInnovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhou 510006GuangdongChina FAFU-UCR Joint Center for Horticultural Biology and Metabolomics Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina College of Life Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Bioinformatics Department School of Life Sciences and TechnologyTongji UniversityShanghai 200092China KingAgroot CropScience Co. Ltd.Qingdao 266500ShandongChina

Soybean is the primary source of plant protein for *** to the indigestibility of the raffinose family of oligosaccharides(RFO),raffinose and stachyose are considered anti-nutritive factors in soybean ***-RFO soybean cultivars are generated by mutagenesis of RFO biosynthesis genes,but the carbohydrate profiles invite further modification to lower *** study employed a pooled multiplex genome editing approach to target four seed-specifically expressed genes mediating RFO biosynthesis,encoding three raffinose synthases(RS2,RS3,and RS4)and one stachyose *** T1progeny,rs2/rs3 and rs4/sts homozygous double mutants and a rs2/rs3/rs4/sts quadruple mutant(rfo-4m)were *** rs2/rs3 mutant showed reduced raffinose and stachyose contents,but the rs4/sts mutant showed only reduced stachyose in *** RFO contents in the rfo-4m mutant were almost *** analysis showed that the mutation of four RFO biosynthesis genes led to a shift of metabolic profile in the seeds,including the accumulation of several oligosaccharides-related *** mutants could contribute to precision breeding of soybean cultivars for soy food production.

关键词： Soybean Genome editing Raffinose family of oligosaccharides Raffinose Stachyose Precision breeding

Preparation of Poly-α-Olefin Microcapsule Particles Coated with Polyurethane as a Drag Reducer Based on Interface Polymerization

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China Petroleum Processing & Petrochemical Technology 2023年第2期25卷 101-112页

作者： Li Chenhao Lu Yong Li Hao Chen Yue Meng Yeqiao zhou pengfei Xu Dan Wang Yiran Zhang Xiaolai Shandong University Jinan 250100China PipeChina Eastern China Crude Oil Storage and Transportation Co. LtdScience and Technology R&D CenterXuzhou 221000China Shandong Dongyue Polymer Material Co. Ltd.Zibo 256401China State Key Lab of Fluorinated Functional Membrane Materials Zibo 256401China

The molecular behavior of polyurethane(PU)coating materials during the surface adsorption of poly-α-olefin as a drag reducing polymer was explored by a molecular dynamics *** different PU capsule wall materials were synthesized using two reaction monomers,and a poly-α-olefin/PU drag reducer microcapsule was prepared based on interface *** structure,morphology,thermal stability,compressive strength,and drag reduction performance of the microcapsules were characterized and *** results showed that a non-bonding interaction induced the adsorption of the PU coating material,poly-α-olefin and PU then fused at the interface,and the PU coating material was embedded into the inner grooves of poly-α-olefin in the form of a local mosaic,thereby forming a stable core–shell *** morphological characterization indicated that PU and poly-α-olefin could form microcapsule *** thermal decomposition temperature of the microcapsule was dependent on the type of capsule wall *** microcapsule structure had a slight effect on poly-α-olefin drag *** system enabled poly-α-olefin to exist in powdered particles through microcapsulation,and had a good dispersion effect that facilitated storage and transport *** method effectively inhibited the accumulation and bonding of poly-α-olefin at room temperature.

关键词： drag reducer poly-α-olefin polyurethane microcapsules particles interfacial polymerization

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聚四氟乙烯在5G领域的应用研究进展

有机氟工业 2024年第2期 29-33页

作者：胡青青李彤周鹏飞陈越安丽华山东东岳高分子材料有限公司山东桓台256401

聚四氟乙烯以其优异的介电性能、耐热性、独特的成型方式等特性,使其在5G领域拥有较高的使用价值。而5G技术已逐渐成为支持经济发展和加速社会创新的软基础设施的关键要素。如何更好地发挥聚四氟乙烯的特性,并开拓聚四氟乙烯在5G领域的... 详细信息

聚四氟乙烯以其优异的介电性能、耐热性、独特的成型方式等特性,使其在5G领域拥有较高的使用价值。而5G技术已逐渐成为支持经济发展和加速社会创新的软基础设施的关键要素。如何更好地发挥聚四氟乙烯的特性,并开拓聚四氟乙烯在5G领域的应用也是迫在眉睫的问题。简要介绍5G技术对通信材料的要求,分别综述了聚四氟乙烯在高频覆铜板、射频线缆、天线滤波器等领域的应用研究进展。

关键词：聚四氟乙烯 5G 高频覆铜板射频同轴电缆

多点锚泊起重船作业情况下的系泊缆失效响应分析

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起重运输机械 2024年第15期 25-32页

作者：王文浩戴永强贾国强李林周鹏飞太原科技大学机械工程学院太原030024 廊坊第六九一六仪器厂廊坊065000 南京扬子国资投资集团有限责任公司南京210000

起重船锚泊系统中的系泊缆一旦发生失效,系统平衡即被打破,严重时会导致起重船处于失控的危险状态,既影响起重船的正常工作又严重威胁着船上人员的安全,故对系泊缆进行失效分析非常重要。文中在时域内通过对船体-吊物-系泊缆组成的耦合... 详细信息

起重船锚泊系统中的系泊缆一旦发生失效,系统平衡即被打破,严重时会导致起重船处于失控的危险状态,既影响起重船的正常工作又严重威胁着船上人员的安全,故对系泊缆进行失效分析非常重要。文中在时域内通过对船体-吊物-系泊缆组成的耦合模型进行动态响应分析,主要研究臂架在尾吊、75°吊、侧吊时风浪流联合作用下某个特定时间单根系泊缆失效时其余系泊缆的受力情况及船体与吊物的运动响应。结果表明:单根系泊缆失效会导致受损系泊系统剩余张力重新分布、侧吊时卧链长的减少量最大以及侧吊时起重船与吊物纵荡、横荡、横摇、艏摇瞬态响应变化显著。因此,不能忽视系泊缆失效对起重船的影响,且研究对系泊系统的设计和了解船体瞬态运动具有参考价值。

关键词：起重船系泊缆失效分析运动响应

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高近红外反射率铬钴绿颜料的制备与性能

兵器材料科学与工程 2024年第3期47卷 102-107页

作者：周鹏飞朱洪立李明俊张成军王兴一王珩潘士兵单妍山东非金属材料研究所山东济南250031 青岛科技大学材料科学与工程学院山东青岛266042

以Cr_(2)O_(3)与CoO为原料,通过掺杂Al_(2)O_(3)粉体,用高温固相反应法制备了尖晶石型铬钴绿颜料,研究Cr与Al的不同配比、不同煅烧温度、不同保温时间对尖晶石型铬钴绿颜料的物相组成、近红外波段反射率及CIE色度的影响。结果表明:当Al... 详细信息

以Cr_(2)O_(3)与CoO为原料,通过掺杂Al_(2)O_(3)粉体,用高温固相反应法制备了尖晶石型铬钴绿颜料,研究Cr与Al的不同配比、不同煅烧温度、不同保温时间对尖晶石型铬钴绿颜料的物相组成、近红外波段反射率及CIE色度的影响。结果表明:当Al与Cr的摩尔比为0.1、0.9时,制备的尖晶石型铬钴绿颜料CoAl_(0.1)Cr_(0.9O4)在近红外波段处的反射率最高,其色相为略微偏蓝的绿色相,呈色能力较好。最佳制备工艺参数:煅烧温度为1100℃、保温时间为5h。

关键词：颜料掺杂 XRD 近红外反射率色度

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