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Discovering the ultralow thermal conductive A_(2)B_(2)O_(7)-type high-entropy oxides through the hybrid knowle dge-assiste d data-driven machine learning

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Journal of Materials Science & Technology 2024年第1期168卷 131-142页

作者： Ying Zhang Ke Ren William Yi wang Xingyu Gao Ruihao Yuan Jun wang yiguang wang Haifeng Song Xiubing Liang Jinshan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Innovation Center NPU ChongqingChongqing 401135China Institute of Advanced Structure Technology Beijing Institute of TechnologyHaidian DistrictBeijing 100081China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing 100088China Defense Innovation Institute Academy of Military Sciences of the PLA of ChinaBeijing 100071China

Lattice engineering and distortion have been considered one kind of effective strategies for discovering advanced *** instinct chemical flexibility of high-entropy oxides(HEOs)motivates/accelerates to tailor the target properties through phase transformations and lattice ***,a hybrid knowledge-assisted data-driven machine learning(ML)strategy is utilized to discover the A_(2)B_(2)O_(7)-type HEOs with low thermal conductivity(κ)through 17 rare-earth(RE=Sc,Y,La-Lu)solutes optimized A-site.A designing routine integrating the ML and high throughput first principles has been proposed to predict the key physical parameter(KPPs)correlated to the targetedκof advanced *** the smart-designed 6188(5RE_(0.2))_(2)Zr_(2)O_(7)HEOs,the best candidates are addressed and validated by the princi-ples of severe lattice distortion and local phase transformation,which effectively reduceκby the strong multi-phonon scattering and weak interatomic ***,(Sc_(0.2)Y_(0.2)La_(0.2)Ce_(0.2)Pr_(0.2))_(2)Zr_(2)O_(7)with predictedκbelow 1.59 Wm^(−1)K^(−1)is selected to be verified,which matches well with the ex-perimentalκ=1.69 Wm^(−1)K^(−1)at 300 K and could be further decreased to 0.14 Wm^(−1)K^(−1)at 1473 ***,the coupling effects of lattice vibrations and charges on heat transfer are revealed by the cross-validations of various models,indicating that the weak bonds with low electronegativity and few bond-ing charge density and the lattice distortion(r∗)identified by cation radius ratio(r A/r B)should be the KPPs to decreaseκ*** work supports an intelligent designing strategy with limited atomic and electronic KPPs to accelerate the development of advanced multi-component HEOs with proper-ties/performance at multi-scales.

关键词： High-entropy oxides Thermal conductivity Pyrochlore Key physical parameter First-Principles

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CmMYB3-like negatively regulates anthocyanin biosynthesis and flower color formation during the post-flowering stage in Chrysanthemum morifolium

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Horticultural Plant Journal 2024年第1期10卷 194-204页

作者： Lijie Zhou Shenhui Liu yiguang wang Yuxi wang Aiping Song Jiafu Jiang Sumei Chen Zhiyong Guan Fadi Chen State Key Laboratory of Crop Genetics and Germplasm Enhancement The Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsCollege of HorticultureNanjing Agricultural UniversityNanjingJiangsu 210095China

Color fading caused by a decrease in anthocyanin accumulation during the post-flowering stage significantly affects postharvest quality of ***,the underlying mechanism by which anthocyanin accumulation decreases during the post-flowering stage still unclear,which greatly restricts design of molecular breeding in ***,a chrysanthemum SG7 R2R3 MYB transcription factor(TF),CmMYB3-like,was identified to have a function in regulating anthocyanin biosynthesis during the post-flowering *** real time PCR(qRT-PCR)assays showed that the expression of CmMYB3-like was gradually downregulated when anthocyanin content increased during the flowering stage and was significantly upregulated during the post-flowering *** transformation of chrysanthemum and dual-luciferase assays in *** leaves showed that CmMYB3-like suppressed anthocyanin accumulation by inhibiting the transcription of CmCHS and CmANS directly and that of CmF3H ***,overexpression or suppression of CmMYB3-like did not affect the biosynthesis of flavones or *** transformation of chrysanthemum revealed that the overexpression of CmMYB3-like inhibited anthocyanin accumulation,but its suppression prevented the decrease in anthocyanin accumulation during the post-flowering *** results revealed a crucial role of CmMYB3-like in regulating the color of petals during the post-flowering stage and provided a target gene for molecular design breeding to improve the postharvest quality of chrysanthemum.

关键词： Post-flowering stage Color fading Anthocyanins CmMYB3-like Chrysanthemum Molecular breeding

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Abiotic stress treatment reveals expansin like A gene OfEXLA1 improving salt and drought tolerance of Osmanthus fragrans by responding to abscisic acid

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Horticultural Plant Journal 2024年第2期10卷 573-585页

作者： Bin Dong Qianqian wang Dan Zhou yiguang wang Yunfeng Miao Shiwei Zhong Qiu Fang Liyuan Yang Zhen Xiao Hongbo Zhao School of Landscape Architecture Zhejiang Agriculture and Forestry UniversityHangzhouZhejiang 311300China Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants HangzhouZhejiang 311300China Key Laboratory of National Forestry and Grassland Administration on Germplasm Innovation and Utilization for Southern Garden Plants HangzhouZhejiang 311300China

Sweet osmanthus(Osmanthus fragrans) is a having general approval aromatic tree in China that is widely applied to landscaping and gardening. However, the evergreen tree adaptability is limited by many environmental stresses. Currently, limited information is available regarding the genetic analysis and functional identification of expansin genes in response to abiotic stress in sweet osmanthus. In this study, a total of 29 expansin genes were identified and divided into four groups by genome-wide analysis from the sweet osmanthus genome. Transcriptome and quantitative Real-time PCR analysis showed that the cell wall-localized protein expansin-like A(OfEXLA1) gene was significantly induced by salt and drought treatment. Histochemical GUS staining of transgenic Arabidopsis lines in which GUS activity was driven with the OfEXLA1 promoter, GUS activity was significantly induced by salt, drought, and exogenous abscisic acid(ABA). In yeast, we found OfEXLA1overexpression significantly improved the population of cells compared with wild-type strains after NaCl and polyethylene glycol(PEG)treatment. Additionally, OfEXLA1 overexpression not only promoted plant growth, but also improved the salt and drought tolerance in Arabidopsis. To gain insight into the role of ABA signaling in the regulation of OfEXLA1 improving abiotic tolerance in sweet osmanthus, four differentially expressed ABA Insensitive 5(ABI5)-like genes(OfABL4, OfABL5, OfABL7, and OfABL8) were identified from transcriptome, and dualluciferase(dual-LUC) and yeast one hybrid(Y1H) assay showed that OfABL4 and OfABL5 might bind to OfEXLA1 promoter to accumulate the OfEXLA1 expression by responding to ABA signaling to improve abiotic tolerance in sweet osmanthus. These results provide the information for understanding the molecular functions of expansin-like A gene and molecular breeding of sweet osmanthus in future.

关键词： Osmanthus fragrans Abiotic tolerance Expansin Abscisic acid

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不同梅品种花果特性分析与评价

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浙江农林大学学报 2024年第1期41卷 113-123页

作者：王爽董彬王艺光赵宏波浙江农林大学风景园林与建筑学院浙江杭州311300 浙江农林大学浙江省园林植物种质创新与利用重点实验室浙江杭州311300

【目的】梅Prunusmume是花果兼用型植物,在国内广泛应用。评价不同梅品种,为花果兼用梅品种选育以及梅果实加工利用提供依据。【方法】以梅28个品种为研究对象,测定其花部性状、结实量、果实品质指标,运用主成分分析与聚类分析法进行综... 详细信息

【目的】梅Prunusmume是花果兼用型植物,在国内广泛应用。评价不同梅品种,为花果兼用梅品种选育以及梅果实加工利用提供依据。【方法】以梅28个品种为研究对象,测定其花部性状、结实量、果实品质指标,运用主成分分析与聚类分析法进行综合评价。【结果】28个梅品种花径为19.14-31.38 mm,花瓣数量为5-23枚,花色以白色品种占比最大。不同梅品种结实量差异较大,其中‘丽江照水’‘玉龙红翡’‘玉龙绯雪’易结实。不同梅品种果实外观品质与内在品质均存在差异。对28个品种进行主成分分析,16个指标简化为4个公因子,方差解释百分比为80.77%;综合得分表明:‘蝶羽重’‘骨里红’‘单粉垂枝’‘红颜朱砂’‘ZAFU-CZ02’‘江梅’‘丽江照水’得分较高;对28个品种进行系统聚类分析,结果表明:当欧氏距离为24时,梅品种可分为6类。综合主成分与聚类分析结果,筛选出‘单粉垂枝’‘丽江照水’‘骨里红’‘红颜朱砂’4个优良的花果兼用梅品种。【结论】不同梅品种花部性状、结实量及果实品质均存在差异。综合花部性状、结实量、果实品质可知:‘单粉垂枝’‘丽江照水’花单瓣,易结实,果实综合品质最佳,适宜作为果品加工的花果兼用梅品种;‘骨里红’‘红颜朱砂’花色艳丽,半重瓣,较易结实,适宜作为实生选种的花果兼用梅品种。

关键词：梅品种花果兼用主成分分析聚类分析综合评价

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不同梅花品种花香成分鉴定与分析

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浙江农林大学学报 2024年第2期41卷 262-274页

作者：杨钰王艺光董彬肖政赵宏波浙江农林大学风景园林与建筑学院浙江杭州311300 浙江农林大学浙江省园林植物种质创新与利用重点实验室浙江杭州311300 浙江农林大学南方园林植物种质创新与利用国家林业和草原局重点实验室浙江杭州311300

【目的】比较梅花Prunus mume不同品种间的花香成分差异,了解梅花花香成分组成,为梅花花香代谢途径关键酶基因挖掘和分子育种提供参考。【方法】以不同品种群为材料,采用顶空固相微萃取法和气相色谱质谱联用技术(HS-SPME-GC-MS)测定了2... 详细信息

【目的】比较梅花Prunus mume不同品种间的花香成分差异,了解梅花花香成分组成,为梅花花香代谢途径关键酶基因挖掘和分子育种提供参考。【方法】以不同品种群为材料,采用顶空固相微萃取法和气相色谱质谱联用技术(HS-SPME-GC-MS)测定了20个梅花品种的花香成分,明确梅花花香的特征香气物质,分析梅花不同品种群的花香成分及相对含量差异,并按照花香成分组成对梅花品种进行聚类分析。【结果】在20个梅花品种中共鉴定出43种挥发物,其中苯环/苯丙烷类化合物种类最多且相对含量最高,在梅花各品种中的相对含量均高于85%。乙酸苯甲酯、苯甲醇、丁子香酚、甲基丁香酚、苯甲醛和肉桂醇是梅花花香的主要成分,朱砂和宫粉品种群花香化合物数量最多,其次是跳枝和绿萼品种群,玉蝶和垂枝品种群花香化合物数量较少。聚类分析表明:根据花香成分的种类及相对含量,20个梅花品种可分为5类。【结论】梅花不同品种群的香气成分及其相对含量均有差异,不同花香成分对不同品种梅花香气的贡献也有差异。

关键词：梅花品种花香成分

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Fault Diagnosis of Power Electronic Circuits Based on Adaptive Simulated Annealing Particle Swarm Optimization

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Computers, Materials & Continua 2023年第7期76卷 295-309页

作者： Deye Jiang yiguang wang School of Electronic Information Guilin University of Electronic TechnologyBeihai536000China School of Ocean Engineering Guilin University of Electronic TechnologyBeihai536000China

In the field of energy conversion,the increasing attention on power electronic equipment is fault detection and diagnosis.A power electronic circuit is an essential part of a power electronic *** state of its internal components affects the performance of the *** stability and reliability of an energy system can be improved by studying the fault diagnosis of power electronic ***,an algorithm based on adaptive simulated annealing particle swarm optimization(ASAPSO)was used in the present study to optimize a backpropagation(BP)neural network employed for the online fault diagnosis of a power electronic *** built a circuit simulation model in MATLAB to obtain its DC output *** Fourier analysis,we extracted fault *** were normalized as training samples and input to an unoptimized BP neural network and BP neural networks optimized by particle swarm optimization(PSO)and the ASAPSO *** accuracy of fault diagnosis was compared for the three *** simulation results demonstrate that a BP neural network optimized with the ASAPSO algorithm has higher fault diagnosis accuracy,better reliability,and adaptability and can more effectively diagnose and locate faults in power electronic circuits.

关键词： Fault diagnosis power electronic circuit particle swarm optimization backpropagation neural network

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Interaction of multicomponent disilicate(Yb_(0.2)Y_(0.2)Lu_(0.2)Sc_(0.2)Gd_(0.2))_(2)Si_(2)O_(7)with molten calcia-magnesia-aluminosilicate

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Journal of Advanced Ceramics 2022年第1期11卷 66-74页

作者： Yu DONG Ke REN Qiankun wang Gang SHAO yiguang wang Science and Technology on Thermostructural Composite Materials Laboratory Northwestern Polytechnical UniversityXi’an 710072China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Henan Province Industrial Technology Research Institute of Resources and Materials Zhengzhou UniversityZhengzhou 450001China

Environmental barrier coating(EBC)materials that are resistant against molten calcia-magnesia-aluminosilicate(CMAS)corrosion are urgently ***,multicomponent rare-earth(RE)disilicate((Yb_(0.2)Y_(0.2)Lu_(0.2)Sc_(0.2)Gd_(0.2))_(2)Si_(2)O_(7),(5RE)_(2)Si_(2)O_(7))was investigated with regard to its CMAS interaction behavior at 1400°*** with the individual RE disilicates,the(5RE)2Si2C>7 material exhibited improved resistance against CMAS *** dominant process involved in the interaction of(5RE)_(2)Si_(2)O_(7)with CMAS was reaction-recrystallization.A dense and continuous reaction layer protected the substrate from rapid corrosion at high *** results demonstrated that multicomponent strategy of RE species in disilicate can provide a new perspective in the development of promising EBC materials with improved corrosion resistance.

关键词： environmental barrier coating(EBC)materials rare-earth(RE)disilicates multicomponent ceramics calcia-magnesia-aluminosilicate(CMAS)interaction

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桂花OfbHLH89参与调控花开放的功能解析

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园艺学报 2024年第6期51卷 1311-1320页

作者：李湘钟诗蔚王艺光邓金萍方遒赵宏波浙江农林大学风景园林与建筑学院浙江省园林植物种质创新与利用重点实验室国家林业和草原局南方园林植物种质创新与利用重点实验室杭州311300

在桂花(Osmanthus fragrans)转录组数据库中筛选并克隆出可能参与花开放过程的候选基因OfbHLH89。该基因的开放阅读框(ORF)长744 bp,编码247个氨基酸。氨基酸序列和系统进化树分析表明,OfbHLH89与红豆VaBPE和辣椒CbBPE的亲缘相似性分别... 详细信息

在桂花(Osmanthus fragrans)转录组数据库中筛选并克隆出可能参与花开放过程的候选基因OfbHLH89。该基因的开放阅读框(ORF)长744 bp,编码247个氨基酸。氨基酸序列和系统进化树分析表明,OfbHLH89与红豆VaBPE和辣椒CbBPE的亲缘相似性分别为54.1%和52.74%。亚细胞定位显示OfbHLH89定位于细胞核。时空表达分析表明OfbHLH89在花中高表达,且在花开放过程中的表达水平逐渐升高,盛开期达到峰值;19℃低温诱导下的花芽中,OfbHLH89的转录水平显著高于23℃对照。OfbHLH89过表达矮牵牛花瓣变大,表明OfbHLH89可能参与花开放过程的花瓣扩张;检测转基因矮牵牛下游与细胞扩张相关基因的转录水平发现,PhEXPA1、PhXTH24和PhXTH25均显著上调。此外,在瞬时过表达OfbHLH89的桂花花芽中,OfXTH5、OfXTH21、Of XTH32、Of XTH34、OfEXPA4和OfEXPA13的相对表达量也显著高于对照花芽。综上,OfbHLH89可能通过激活细胞扩张相关基因的转录使花瓣变大从而影响桂花开放。

关键词：桂花花开放 bHLH 细胞扩张

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High-entropy(La_(0.2)Nd_(0.2)Sm_(0.2)Gd_(0.2)Yb_(0.2))_(2)(Zr_(0.75)Ce_(0.25))_(2)O_(7)thermal barrier coating material with significantly enhanced fracture toughness

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Chinese Journal of Aeronautics 2023年第4期36卷 556-564页

作者： Donghui GUO Feifei ZHOU Baosheng XU yiguang wang You wang Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Department of Materials Science School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China

Poor fracture toughness leads to premature failure of La_(2)(Zr_(0.75)Ce_(0.25))_(2)O_(7)(LCZ)ther-mal barrier coatings in an elevated temperature service environment.A novel coating material,namely(La_(0.2)Nd_(0.2)Sm_(0.2)Gd_(0.2)Yb_(0.2))_(2)(Zr_(0.75)Ce_(0.25))_(2)O_(7)(LNSGY)based on the high-entropy con-cept,was successfully fabricated by solid-state *** microstructure of LCZ and LNSGY was investigated by X-Ray Diffraction(XRD),Raman Spectrometer(RS),Transmission Electronic Microscopy(TEM)and Scanning Electron Microscopy(SEM).The fracture toughness of the LCZ and LNSGY ceramics was *** LNSGY has excellent high-temperature phase stability,and the grain size of LNSGY ceramic is smaller than that of LCZ ceramic at an elevated temper-ature due to the sluggish diffusion *** with LCZ(fracture toughness is(1.4±0.1)MPa·m^(1/2)),the fracture toughness of LNSGY is significantly enhanced(fracture toughness is(2.0±0.3)MPa·m^(1/2)).Therefore,the LNSGY can be a promising advanced thermal barrier coat-ing material in the future.

关键词： Fracture toughness High-entropy ceramics High-temperature phase sta-bility Rare-earth zirconate Thermal barrier coatings

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Characteristic of Fresh and Harden Properties of Polyvinyl Alcohol Fibre Reinforced Alkali Activated Composite

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Journal of Renewable Materials 2023年第3期11卷 1321-1337页

作者： yiguang wang Zhe Zhang Xun Zhang School of Civil Engineering Zhengzhou UniversityZhengzhou450001China Henan Provincial Communications Planning Survey&Design Institute Co.Ltd.Zhengzhou450001China

Fibre can enhance the mechanical properties of cement-based composites,but fibre also degrades their ***,the quantitative effects of fiber content and length-diameter ratio on alkali-activated materials are still *** aspect ratio,volume fraction of polyvinyl alcohol fibre(PVAF),and various water-binder ratio were employed to prepare a total of 26 groups of fibre reinforced alkali-activated composite(FRAAC).The influence of PVAF fibre factor(product of fiber volume fraction and length-diameter ratio)on flowability,compactness,strength,and crack fractal dimension of FRAAC was *** influence of water-binder ratio on the plastic viscosity of FRAAC was more significant than that on the yield *** fibre factor was lower than critical value of 150,the influence of fibres could be *** reason was that the space between fibres was distant,so the flowability of FRAAC was not impacted by *** this time,fibres were challenging to restrict the cracks in matrix and increase their mechanical *** fibre factor was higher than critical value 150 and lower than density packing value 450,the flexural strength,compressive strength and crack fractal dimension of FRAAC were considerably enhanced,and the FRAAC could still flow easily under dead *** fibre factor were above 450,noteworthy fibre balling considerably decreased the flowability,leading to poor solidity and reduced compressive ***,the ideal content of PVAF in alkali activated composite is between 150/(l/d)and 450/(l/d).

关键词： Alkali-activated composite fibre reinforced composite fibre factor flowability strength fractal dimension

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