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International Journal of Minerals,Metallurgy and Materials 2024年第4期31卷 773-785页

作者： mengwei Wu wei Yong Cunqin Fu Chunmei Ma Ruiping Liu Department of Materials Science and Engineering China University of Mining&Technology(Beijing)Beijing 100083China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China

The martensitic transformation temperature is the basis for the application of shape memory alloys(SMAs),and the ability to quickly and accurately predict the transformation temperature of SMAs has very important practical *** this work,machine learning(ML)methods were utilized to accelerate the search for shape memory alloys with targeted properties(phase transition temperature).A group of component data was selected to design shape memory alloys using reverse design method from numerous unexplored *** modeling and feature modeling were used to predict the phase transition temperature of the shape memory *** experimental results of the shape memory alloys were obtained to verify the effectiveness of the support vector regression(SVR)*** results show that the machine learning model can obtain target materials more efficiently and pertinently,and realize the accurate and rapid design of shape memory alloys with specific target phase transition *** this basis,the relationship between phase transition temperature and material descriptors is analyzed,and it is proved that the key factors affecting the phase transition temperature of shape memory alloys are based on the strength of the bond energy between *** work provides new ideas for the controllable design and performance optimization of Cu-based shape memory alloys.

关键词： machine learning support vector regression shape memory alloys martensitic transformation temperature

Role of Eclipta prostrata extract in improving spatial learning and memory deficits in D-galactose-induced aging in rats

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Journal of Traditional Chinese Medicine 2019年第5期39卷 649-657页

作者： Xia Xichao Yu Ruixue Wang Xiaowei wei mengwei Yi Li Wang Aimei Ma Yuhong Zhang Junfeng Ji Zhaohui Li Yuan Wang Qiong Medicine College of Pingdingshan University Pingdingshan 467000China Basic Medicine College Nanyang Medical UniversityNanyang 473061China

OBJECTIVE: To investigate the role of Eclipta prostrata (E. prostrata) extract in improving spatial learning and memory deficits in D-galactose-induced aging in rats. METHODS: Rats were divided into five groups, with 10 animals in each group. Aging rats were produced by treatment with 100 mg·kg-1·d-1 of D-galactose for 6 weeks. Rats in the E. prostrata treatment groups received an aqueous extract of E. prostrata orally at a concentration of 50, 100, or 200 mg·kg-1· d-1 for 3 weeks. Animals in both the normal and model groups were treated with similar volumes of saline. Spatial memory performance was measured using the Morris water maze. The mRNA levels and enzyme activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and glutathione reductase (GR) were analyzed using real- time quantitative PCR and spectrophotometry,respectively. The levels of induced nitric oxide synthase (iNOS), nitric oxide (NO), dopamine (DA), norepinephrine (NE), and serotonin (5-HT) were determined using enzyme-linked immunosorbent assay and spectrophotometry. RESULTS: Compared with the normal group, rats in the D-galactose-treated model group exhibited significant memory loss. There was severe damage to the hippocampal CA1 area, and expression levels of SOD, CAT, GPx, and GR were significantly decreased in the model group compared with the normal group. In the model group, levels of iNOS and NO were significantly increased compared with the normal group. However, treatment with E. prostrata extract reversed the conditions caused by D-galactose- induced aging, especially in the groups with higher treatment concentrations. Compared with the normal group, the levels of DA, NE, and 5-HT were significantly lower in the D-galactose-treated model group. In the E. prostrata extract-treated groups, however, there was a dose-dependent upregulation of DA, NE, and 5-HT expression. CONCLUSION: Our results suggest that administration of E. prostrata extract can result in an

关键词： Eclipta Galactose Spatial learning Memory disorders Antioxidants

The H3K9me2-binding protein AGDP3 limits DNA methylation and transcriptional gene silencing in Arabidopsis

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Journal of Integrative Plant Biology 2022年第12期64卷 2385-2395页

作者： Xuelin Zhou mengwei wei Wenfeng Nie Yue Xi Li Peng Qijie Zheng Kai Tang Viswanathan Satheesh Yuhua Wang Jinyan Luo Xuan Du Rui Liu Zhenlin Yang Honggui La Yingli Zhong Yu Yang Jian-Kang Zhu Jiamu Du Mingguang Lei Shanghai Center for Plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 201602China University of Chinese Academy of Sciences Beijing 100049China Department of Horticulture College of Horticulture and Plant ProtectionYangzhou UniversityYangzhou 225009China Department of Horticulture&Landscape Architecture Purdue UniversityWest LafayetteIdiana47906USA Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes Institute of Plant and Food ScienceSchool of Life SciencesSouthern University of Science and TechnologyShenzhen 518055China College of Bioscience and Biotechnology Hunan Agricultural UniversityChangsha 410128China

DNA methylation,a conserved epigenetic mark,is critical for tuning temporal and spatial gene *** Arabidopsis thaliana DNA glycosylase/lyase REPRESSOR OF SILENCING 1(ROS1)initiates active DNA demethylation and is required to prevent DNA hypermethylation at thousands of genomic ***,how ROS1 is recruited to specific loci is not well ***,we report the discovery of Arabidopsis AGENET Domain Containing Protein 3(AGDP3)as a cellular factor that is required to prevent gene silencing and DNA ***3 binds to H3K9me2 marks in its target DNA via its AGD12 *** of the crystal structure of the AGD12 cassette of AGDP3 in complex with an H3K9me2 peptide revealed that dimethylated H3 K9 and unmodified H3 K4 are specifically anchored into two different surface pockets.A histidine residue located in the methyllysine binding aromatic cage provides AGDP3 with pH-dependent H3K9me2 binding *** results uncover a molecular mechanism for the regulation of DNA demethylation by the gene silencing mark H3K9me2.

关键词： AGDP3 DNA demethylation epigenetics H3K9me2 ROS1

数字技术如何助力供应链碳减排——基于国网浙江电力的案例研究

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南开管理评论 2024年第1期27卷 27-39,I0005,I0006页

作者：宋华韩梦玮于亢亢葛巍中国人民大学商学院新疆财经大学中国人民大学农业与农村发展学院 State Grid Yingda Carbon Asset Management(Shanghai)Co. Ltd.

全球气候变暖问题加剧,数字技术被认为是数字经济时代推动经济社会碳减排的关键抓手。本文从数字网络赋能的商业创新循环(N EBIC)理论视角出发,以国网浙江电力为研究对象,探究了数字技术助推供应链碳减排的过程机制及数字技术发挥的独... 详细信息

全球气候变暖问题加剧,数字技术被认为是数字经济时代推动经济社会碳减排的关键抓手。本文从数字网络赋能的商业创新循环(N EBIC)理论视角出发,以国网浙江电力为研究对象,探究了数字技术助推供应链碳减排的过程机制及数字技术发挥的独特作用。研究发现,数字技术通过协助识别供应链数字化运营网络、动员数字化关系网络、聚合数字化知识网络和促成数字化价值网络这四个环节来助推供应链碳减排。本文提炼了数字技术推动供应链碳减排机制的理论模型,洞察了数字技术在推进供应链碳减排过程中所发挥的反映赋能和能动使能的独特双重作用,明晰了数字技术对供应链多方关系形态重构的影响,以及对供应链碳减排知识外溢和信用外溢的关键作用。本文深化了碳中和愿景下数字技术对供应链碳减排的作用机制的探索。

关键词：数字技术供应链碳减排供应链金融案例研究

新疆食源性金黄色葡萄球菌分离株的分子分型与耐药性分析

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疾病预防控制通报 2018年第6期33卷 74-78,85页

作者：马鑫苏静孟卫卫刘斌新疆维吾尔自治区疾病预防控制中心

目的建立新疆食源性金黄色葡萄球菌PFGE分型和耐药数据库,了解金黄色葡萄球菌分离株的分子分型特征及抗生素的耐药状况。方法按照《食品安全国家标准金黄色葡萄球菌检验》GB4789.10-2010分离食品及食源性疾病暴发中金黄色葡萄球菌,采用... 详细信息

目的建立新疆食源性金黄色葡萄球菌PFGE分型和耐药数据库,了解金黄色葡萄球菌分离株的分子分型特征及抗生素的耐药状况。方法按照《食品安全国家标准金黄色葡萄球菌检验》GB4789.10-2010分离食品及食源性疾病暴发中金黄色葡萄球菌,采用脉冲场凝胶电泳法(pulse field gel electrophoresis,PFGE)分子分型和微量肉汤稀释法(MIC)测定分离株药物敏感性。结果147株食源性金黄色葡萄球菌中109株来自常规监测、38株来自食源性疾病暴发事件,147株菌相似度67.4%~100.0%,经聚类分析分为102个PFGE带型;耐药率居前三位是青霉素81.0%(119/147)、红霉素45.6%(67/147)和四环素21.1%(31/147);多重耐药率21.8%(32/147)。结论新疆地区食源性金黄色葡萄球菌PFGE分型数据库存在差异明显的多个基因型,揭示了不同来源金黄色葡萄球菌菌株之间的亲缘性和耐药特征,为进一步预警和控制新疆食源性疾病暴发提供支持。

关键词：食源性金黄色葡萄球菌脉冲场凝胶电泳(PFGE) 耐药性

可持续设计理念在当代商业建筑环境设计中的实践探析

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艺术科技 2024年第2期37卷 25-27页

作者：张炜黄梦薇山东建筑大学艺术学院山东济南250101

目的:当今社会,环境问题已经升级为全球性的巨大挑战。人类活动和建筑行业的蓬勃发展,不可避免地会造成资源消耗和环境污染。随着城市化的快速发展,商业建筑比如售楼中心也成了城市景观的一部分,可持续设计理念的实践应用显得尤为重要... 详细信息

目的:当今社会,环境问题已经升级为全球性的巨大挑战。人类活动和建筑行业的蓬勃发展,不可避免地会造成资源消耗和环境污染。随着城市化的快速发展,商业建筑比如售楼中心也成了城市景观的一部分,可持续设计理念的实践应用显得尤为重要。方法:售楼中心的转型迫在眉睫,必须减少资源浪费和能源消耗,建设可持续发展的生态环境。包括采用创新的建筑材料和技术,利用可再生能源,减少碳排放,同时加强生态景观规划,打造宜人的户外空间。结果:可持续设计理念在商业建筑中的应用可以显著减少资源浪费和能源消耗,有助于构建良好的生态环境。结论:将可持续设计原则应用于售楼中心转型项目中,不仅有助于减少资源浪费和能源消耗,提供多元化的社区服务,还有助于打造良好的生态环境。因此,在商业建筑设计中,可持续性应被视为一个重要的考虑因素,以确保建筑的持久生命力和社会价值。

关键词：可持续设计商业建筑环境设计再利用

Deep eutectic solvent-induced synthesis of Ni-Fe catalyst with excellent mass activity and stability for water oxidation

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Green Energy & Environment 2023年第3期8卷 852-863页

作者： Ruichang Xue mengwei Guo Zhuoming wei Qibo Zhang Key Laboratory of Ionic Liquids Metallurgy Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming650093China State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province Kunming650093China

Ni-Fe bimetallic electrodes are currently recognized as a kind of benchmark transition metal-based oxygen evolution reaction(OER)*** synthesis of Ni-Fe bimetallic electrode materials with excellent catalytic activity and satisfied stability by a simple and low-cost route is still a big ***,well-defined Ni-Fe nanoparticles in-situ developed on a planar Fe substrate(Ni-Fe NPs/Fe)is fabricated via a facile one-step galvanic replacement reaction(GRR)carried out in an Ethaline-based deep eutectic solvent(DES).The prepared Ni-Fe NPs/Fe exhibits outstanding OER performance,which needs an overpotential of only 319 mV to drive a current density of 10 mA cm^(-2),with a small Tafel slope of 41.2 mV dec^(-1) in 1.0 mol L^(-1) KOH,high mass activity(up to 319.78 A g^(-1) at an overpotential of 300 mV)and robust durability for 200 ***,the Ni-Fe bimetallic oxygen-evolution electrode obtained from the Ethaline-based DES is catalytically more active and durable than that of its counterpart derived from the 4.2 mol L^(-1) NaCl aqueous *** reason for this is mainly related to the different morphology and surface state of the Ni-Fe catalysts obtained from these different solvent environments,particularly for the differences in phy-chemical properties,active species formed and deposition kinetics,offered by the Ethaline-based DES.

关键词： Ni-Fe catalysts Galvanic replacement reaction Deep eutectic solvent Oxygen evolution reaction

Flexible Broadband Light Absorbers with a Superhydrophobic Surface Fabricated by Ultraviolet-assisted Nanoimprint Lithography

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Chemical Research in Chinese Universities 2022年第3期38卷 829-833页

作者： wei Wanyuan LI mengwei CHEN Yulan Department of Chemistry Tianjin UniversityTianjin100354P.R.China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun130012P.R.China

We present a simple approach to fabricate a kind of composite films with a superhydrophobic and broadband light absorbing surface by ultraviolet-assisted nanoimprinting over a gradiently deposited composite *** wettability and optical property of the resultant surfaces are tunable by the deposition time before polymerization(T_(s))and mold’s *** robust and elastomeric films exhibiting high sunlight absorptivity up to 98.13%and contact angle of their surfaces up to 150°are prepared under optimized conditions,as using a mold with a small pattern size(hexagonal periodic mold with cylinder diameter of ca.37μm)under T_(s)=10 min for imprinting the crosslinked poly[di(ethylene glycol)ethyl ether acrylate]and poly(isobornyl acrylate)in the presence of polypyrrole(PPy)*** dual functions are found related to the hierarchical architecture of the surface,arising from the synergetic effects of the periodical patterned polymer substrate and spontaneously assembled PPy microstructures on the *** current strategy based on the combination of ultraviolet-assisted nanoimprint lithography and hierarchical assembly of gradiently deposited black nano-fillers offers a new insight into the design of robust superhydrophobic and black surfaces,which is helpful to deepen our understanding of the relationship between liquid/light manipulation and micro/nanostructured surfaces.

关键词： Superhydrophobic surface Black absorber Composite film Ultraviolet-assisted nanoimprint lithography Hierarchical microstructure

Inositol Pyrophosphate lnsP8 Acts as an Intracellular Phosphate Signal in Arabidopsis

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Molecular Plant 2019年第11期12卷 1463-1473页

作者： Jinsong Dong Guojie Ma Liqian Sui mengwei wei Viswanathan Satheesh Ruyue Zhang Shenghong Ge Jinkai Li Tong-En Zhang Christopher Wittwer Henning JJessen Huiming Zhang Guo-Yong An Dai-Yin Chao Dong Liu Mingguang Lei Shanghai Center for Plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology&EcologyChinese Academic of SciencesShanghai 200032China University of Chinese Academy of Sciences Beijing 100049China lnstitute of Organic Chemistry Albert-Ludwigs UniversityFreiburgAlbertstrasse 2179104 FreiburgGermany C旧SS-Centre for Integrative Biological Signalling Studies Albert-Ludwigs UniversityFreiburgAlbertstrasse 2179104 FreiburgGermany Key Laboratory of Plant Stress Biology School of Life SciencesHenan University.Kaifeng 475004China Center for Plant Biology School of Life SciencesTsinghua UniversityBeijing 100084China

The maintenance of cellular phosphate(Pi)homeostasis is of great importance in living *** SPX domain-containing protein 1(SPX1)proteins from both Arabidopsis and rice have been proposed to act as sensors of Pi *** molecular signal indicating the cellular Pi status and regulating Pi homeostasis in plants,however,remains to be identified,as Pi itself does not bind to the SPX ***,we report the identification of the inositol pyrophosphate lnsP8 as a signaling molecule that regulates Pi homeostasis in *** gel electrophoresis profiling of InsPs revealed that lnsP8 level positively correlates with cellular Pi *** demonstrated that the homologs of diphosphoinositol pentaki-sphosphate kinase(PPIP5K),VIH1 and VIH2,function redundantly to synthesize lnsP8,and that the vih1 vih2 double mutant overaccumulates ***1 directly interacts with PHR1,the central regulator of Pi starvation responses,to inhibit its function under Pi-replete ***,this interaction is compromised in the vih1 vih2 double mutant,resulting in the constitutive induction of Pi starvation-induced genes,indicating that plant cells cannot sense cellular Pi status without ***,we showed that lnsP8 could directly bind to the SPX domain of SPX1 and is essential for the interaction between SPX1 and ***,our study suggests that lnsP8 is the intracellular Pi signaling molecule serving as the ligand of SPX1 for controlling Pi homeostasis in plants.

关键词： nositol pyrophosphates lnsP8 phosphate signal SPX domain Pi homeostasis

A hexaazatriphenylene fused large discotic polycyclic aromatic hydrocarbon with selective and sensitive metal-ion sensing properties

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Chinese Chemical Letters 2021年第12期32卷 3837-3840页

作者： Wenxiu Qu wei Yuan mengwei Li Yulan Chen Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistryInstitute of Molecular PlusTianjin UniversityTianjin 300072China

A HAT based large PAH discotic molecule PN_(8)is developed. The enlarged chromophoric core and doping heteroatoms enable colorimetric and fluorometric sensing of Cu^(2+)and Zn^(2+)with highly appreciable optical changes, good selectivity and low detection limit. Moreover, PN_(8)was demonstrated as an excellent adsorbent to remove Cu^(2+)and Zn^(2+)from wastewater.

关键词： Hexaazatriphenylene Ion adsorption Ion sensing Polycyclic aromatic hydrocarbons Self-assembly