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Food Science and Human Wellness 2024年第3期13卷 1168-1185页

作者： Wenhui Li Yu Xi Junru wang yinxiao Zhang He Li Xinqi Liu Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Engineering and Technology Research Center of Food AdditivesNational Soybean Processing Industry Technology Innovation CenterBeijing Technology and Business UniversityBeijing 100048China

Globally,the prevalence of anxiety and depression has reached epidemic proportions.Food-derived protein hydrolysates and peptides delivered through dietary supplementation can avoid the negative risks associated with traditional pharmaceuticals while delivering superior anxiolytic and antidepressant effects.This review summarizes current research on food-derived anxiolytic and antidepressant protein hydrolysates and peptides,and subsequently analyses their physicochemical characteristics and elaborates on their mechanisms.The aim of this work is to contribute to the in-depth study and provide a theoretical foundation for the development of related products to better serve patients with anxiety and depression.

关键词： Anxiolytic Antidepressant Peptides Protein hydrolysates Neurotransmitter

In maize,co-expression of GAT and GR79-EPSPS provides high glyphosate resistance,along with low glyphosate residues

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aBIOTECH 2023年第4期4卷 277-290页

作者： Shengyan Li Pengcheng Li Xiangyin Li Ning Wen yinxiao wang Wei Lu Min Lin Zhihong Lang Biotechnology Research Institute Chinese Academy of Agricultural SciencesBeijingChina National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanyaHainanChina

Herbicide tolerance has been the dominant trait introduced during the global commercialization of genetically modified(GM)crops.Herbicide-tolerant crops,especially glyphosate-resistant crops,offer great advantages for weed management;however,despite these benefits,glyphosate-resistant maize(Zea mays L.)has not yet been commercially deployed in China.To develop a new bio-breeding resource for glyphosate-resistant maize,we introduced a codon-optimized glyphosate N-acetyltransferase gene,gat,and the enolpyruvyl-shikimate-3-phosphate synthase gene,gr79-epsps,into the maize variety B104.We selected a genetically stable high glyphosate resistance(GR)transgenic event,designated GG2,from the transgenic maize population through screening with high doses of glyphosate.A molecular analysis demonstrated that single copy of gat and gr79-epsps were integrated into the maize genome,and these two genes were stably transcribed and translated.Field trials showed that the transgenic event GG2 could tolerate 9000 g acid equivalent(a.e.)glyphosate per ha with no effect on phenotype or yield.A gas chromatography-mass spectrometry(GC–MS)analysis revealed that,shortly after glyphosate application,the glyphosate(PMG)and aminomethylphosphonic acid(AMPA)residues in GG2 leaves decreased by more than 90%compared to their levels in HGK60 transgenic plants,which only harbored the epsps gene.Additionally,PMG and its metabolic residues(AMPA and N-acetyl-PMG)were not detected in the silage or seeds of GG2,even when far more than the recommended agricultural dose of glyphosate was applied.The co-expression of gat and gr79-epsps,therefore,confers GG2 with high GR and a low risk of herbicide residue accumulation,making this germplasm a valuable GR event in herbicide-tolerant maize breeding.

关键词： Transgenic maize Glyphosate resistance Gr79-epsps gene Gat gene Low residues

Characterization of the asymmetric evolving yield and flow of 6016-T4 aluminum alloy and DP490 steel

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Journal of Materials Science & Technology 2023年第2期133卷 209-229页

作者： Kai Du Shaohui Huang Yong Hou Haibo wang yinxiao wang Wentao Zheng Xiaoguang Yuan School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China Department of Technical Planning Press Shop BMW Brilliance Automotive Ltd.Shenyang 100044China Department of Materials Science and Engineering&RIAM Seoul National UniversitySeoul 08826Republic of Korea School of Mechanical and Materials Engineering North China University of TechnologyBeijing 100144China

6016-T4 aluminum alloy and DP490 steel were systematically tested under 24 proportional loading paths,including uniaxial tensile tests with a 15°increment,uniaxial compressive and simple shear tests with a 45°increment,and biaxial tensile tests using cruciform specimens.Cruciform specimens in the rolling/transverse and 45°/135°sampling directions were tested with seven and four different stress ra-tios,respectively.The normal and diagonal planes plastic work contours and the yield stresses under uniaxial tension and compression were measured to investigate the anisotropic yield.Meanwhile,the normal and diagonal planes directions of plastic strain rate and the rα-values under uniaxial tension and compression were characterized to confirm the plastic flow.Several existing asymmetric yield crite-ria under the associated and non-associated flow rules were comprehensively evaluated to describe the asymmetric plastic anisotropy of 6016-T4 aluminum alloy and DP490 steel.The results suggest that in the investigated yield criteria,the non-associated models can predict the tension and compression asym-metry of materials more accurately than the associated models,and the function of stress triaxiality can more effectively describe the asymmetric yield behavior than the first stress invariant.In addition,the pure shear stress states are helpful in assessing the validity and applicability of advanced asymmetric yield stress functions,and the inspection of diagonal plane plastic work contours containing more pure shear stress states should prioritized over that of normal plane plastic work contours.The evaluation of plastic potential functions should not only consider the prediction accuracy of the normal plane di-rections of plastic strain rate,but also further check the diagonal plane directions of plastic strain rate.Expressing mechanical properties as a function of equivalent plastic strain to calibrate parameters of the yield criterion allows the continuous capture of anisotropic evolution of the asymmetric yield surface

关键词： Proportional loading paths Diagonal plane Asymmetric yield criterion Non-associated flow rule Anisotropic hardening Sheet metal forming

The basic helix-loop-helix transcription factor gene,OsbHLH38,plays a key role in controlling rice salt tolerance

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Journal of Integrative Plant Biology 2023年第8期65卷 1859-1873页

作者： Fengping Du yinxiao wang Juan wang Yingbo Li Yue Zhang Xiuqin Zhao Jianlong Xu Zhikang Li Tianyong Zhao Wensheng wang Binying Fu Institute of Crop Sciences/State Key Laboratory of Crop Gene Resources and Breeding Chinese Academy of Agricultural SciencesBeijing100081China State Key Laboratory of Crop Stress Biology for Arid Areas College of Life SciencesNorthwest A&F UniversityYangling 712100China Anhui Agricultural University Hefei 230036China Hainan Yazhou Bay Seed Lab/National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572024China

The plant hormone abscisic acid(ABA)is crucial for plant seed germination and abiotic stress tolerance.However,the association between ABA sensitivity and plant abiotic stress tolerance remains largely unknown.In this study,436 rice accessions were assessed for their sensitivity to ABA during seed germination.The considerable diversity in ABA sensitivity among rice germplasm accessions was primarily reflected by the differentiation between the Xian(indica)and Geng(japonica)subspecies and between the upland-Geng and lowland-Geng ecotypes.The upland-Geng accessions were most sensitive to ABA.Genome-wide association analyses identified four major quantitative trait loci containing21 candidate genes associated with ABA sensitivity of which a basic helix-loop-helix transcription factor gene,OsbHLH38,was the most important for ABA sensitivity.Comprehensive functional analyses using knockout and overexpression transgenic lines revealed that OsbHLH38 expression was responsive to multiple abiotic stresses.Overexpression of OsbHLH38 increased seedling salt tolerance,while knockout of OsbHLH38 increased sensitivity to salt stress.A salt-responsive transcription factor,OsDREB2A,interacted with OsbHLH38 and was directly regulated by OsbHLH38.Moreover,OsbHLH38 affected rice abiotic stress tolerance by mediating the expression of a large set of transporter genes of phytohormones,transcription factor genes,and many downstream genes with diverse functions,including photosynthesis,redox homeostasis,and abiotic stress responsiveness.These results demonstrated that OsbHLH38 is a key regulator in plant abiotic stress tolerance.

关键词： abscisic acid genome-wide association analysis rice salttolerance seedgermination

Glass formation adjacent to the intermetallic compounds in Cu-Zr binary system

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Journal of Materials Science & Technology 2018年第4期34卷 605-612页

作者： yinxiao wang Jiahao Yao Yi Li Shenyang National Laboratory for Materials Science Institute of Metal research Chinese Academy of Sciences

On the contrary to the common belief that glass formation is unfeasible near terminal intermetallic com- pound due to fast crystallization kinetics, here we present our findings that bulk metallic glasses are readily formed near intermetallic compounds, far away from the traditional region of glass forming near eutectics. While the intermetallic compounds themselves are not possible glass formers, bulk metallic glasses can be quenched compositionally neighboring the intermetallic compounds as close as 0.5 at.%. Taking binary Cu-Zr as a model system, the phenomenon of two optimum glass forming compositions sandwiching the corresponding intermetallic compounds （Cu51 Zr14, CU10Zr7, CuZr, CuZr2 and Cu8Zr3） is observed consistently. This new scenario of＂intermetallic glass＂ is verified by the thermodynamic princi- ple that the alloy liquids neighboring the intermetallic compounds possess lower Gibbs free energy than that of the compounds themselves. Furthermore, the sluggish crystallization behavior of these liquids provides an additional kinetic explanation.

关键词： Metallic glass Intermetallic Glass forming ability Crystallization kinetics

Morphology,composition,and sources of individual aerosol particles at a regional background site of the YRD,China

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Journal of Environmental Sciences 2019年第3期31卷 354-362页

作者： Liang Xu A.P.Lingaswamy yinxiao Zhang Lei Liu Yuanyuan wang Jian Zhang Qianli Ma Weijun Li Environment Research Institute Shandong University Santhiram Engineering College Lin'an Air Background Station (LABS) Department of Atmospheric Sciences School of Earth Sciences Zhejiang University

Aerosol samples were collected at Lin'an, a background site of Yangtze River Delta(YRD).Morphology, size, composition, and mixing state of individual aerosol particles were characterized by transmission electron microscopy(TEM) coupled with energy dispersive X-ray spectroscopy(EDS), and the soluble ions of PM_(1.0) were studied by aerosol mass spectrometer(AMS). The daily average AMS mass concentrations of sulfate, nitrate, and ammonium were about 5.8, 8.6, and 5.6 μg/m^3, respectively. Individual aerosol particles were classified into seven types: S-rich, K-rich, organic matter(OM), soot, fly ash, metal, and mineral. S-rich particles were dominant in all size bins, and 51%(by number) of S-rich particles were internally mixed with other particles. The fraction of organic coating particles was 13.7% in morning, 25.2% in afternoon, and 11% in evening, suggesting that the strong photochemical process during afternoon produced more secondary organic aerosols(SOA) on the surface of inorganic particles. Fly ash and metal particles were abundant during the day, suggesting the influence of emissions from coal-fired power plants and steel plants. The results indicate that the intense industrial emissions in the YRD significantly transported to the background areas. PM_(2.5) concentration may be lower in background air than in urban air but complex mixing state of aerosol particles indicates that the long-range transported particles substantially influenced the background air quality.

关键词： Regional background air Transmission electron microscopy Individual aerosol particles Mixing state Yangtze River Delta

The Metasequoia genome and evolutionary relationships among redwoods

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Plant Communications 2023年第6期4卷 342-355页

作者： Fangfang Fu Chi Song Chengjin Wen Lulu Yang Ying Guo Xiaoming Yang Ziqiang Shu Xiaodong Li Yangfan Feng Bingshuang Liu Mingsheng Sun yinxiao Zhong Li Chen Yan Niu Jie Chen Guibin wang Tongming Yin Shilin Chen Liangjiao Xue Fuliang Cao State Key Laboratory of Tree Genetics and Breeding Co-Innovation Center for Sustainable Forestry in Southern ChinaNanjing Forestry UniversityNanjing 210037China Institute of Herbgenomics Chengdu University of Traditional Chinese MedicineChengdu 611137China Wuhan Benagen Technology Company Limited Wuhan 430000China Wuhan Botanical Garden Chinese Academy of SciencesWuhan 430074China China Academy of Chinese Medical Sciences Institute of Chinese Materia MedicaBeijing 100070China

Redwood trees(Sequoioideae),including Metasequoia glyptostroboides(dawn redwood),Sequoiadendron giganteum(giant sequoia),and Sequoia sempervirens(coast redwood),are threatened and widely recognized iconic tree species.Genomic resources for redwood trees could provide clues to their evolutionary relationships.Here,we report the 8-Gb reference genome of M.glyptostroboides and a comparative analysis with two related species.More than 62%of the M.glyptostroboides genome is composed of repetitive sequences.Clade-specific bursts of long terminal repeat retrotransposons may have contributed to genomic differentiation in the three species.The chromosomal synteny between M.glyptostroboides and S.giganteum is extremely high,whereas there has been significant chromosome reorganization in S.sempervirens.Phylogenetic analysis of marker genes indicates that S.sempervirens is an autopolyploid,and more than 48%of the gene trees are incongruent with the species tree.Results of multiple analyses suggest that incomplete lineage sorting(ILS)rather than hybridization explains the inconsistent phylogeny,indicating that genetic variation among redwoods may be due to random retention of polymorphisms in ancestral populations.Functional analysis of ortholog groups indicates that gene families of ion channels,tannin biosynthesis enzymes,and transcription factors for meristem maintenance have expanded in S.giganteum and S.sempervirens,which is consistent with their extreme height.As a wetland-tolerant species,M.glyptostroboides shows a transcriptional response to flooding stress that is conserved with that of analyzed angiosperm species.Our study offers insights into redwood evolution and adaptation and provides genomic resources to aid in their conservation and management.

关键词： Metasequoia glyptostroboides redwood incomplete lineage sorting polyploidy flooding stress

Coherence preservation during light-surface plasmon polaritons-light transformation

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Science China(Physics,Mechanics & Astronomy) 2013年第9期56卷 1679-1683页

作者： TAN XinHui wang JunQiao CAI Wei MENG Tao XIANG yinxiao LI Wei ZHANG XinZheng The MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Applied Physics School and School of PhysicsNankai University School of Physical Science and Engineering and MOE Key Laboratory of Materials Physics Zhengzhou University

We constructed a four-layer system composed of a prism,a silver film,an air layer and a lithium niobate crystal.Initially we used two coherent light beams to excite surface plasmons.The surface plasmons were then decoupled into light in the photorefractive crystal where a holographic grating was recorded.The two beams remained coherent through light to surface plasmons to light transformation.Studying the characteristics of the holographic grating we found out that the thickness of the grating was to the order of hundreds of microns.The thick holographic grating suggests that the holographic recording in the photorefractive materials was induced by the leaky waves rather than by surface plasmon polaritons directly.

关键词：表面等离子体激元相干光束转换过程全息光栅保存铌酸锂晶体光折变晶体光折变材料

FMCW激光雷达几何结构精度模型与误差修正

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光学精密工程 2023年第9期31卷 1295-1303页

作者：缪寅宵汪星宇朱浩鲍晨兴谭久彬哈尔滨工业大学超精密光电仪器工程研究所黑龙江哈尔滨150001 北京航天计量测试技术研究所北京100076

为实现调频连续波(Frequency-modulated Continuous-wave,FMCW)激光雷达的高精度测量,针对激光雷达机械加工及装配过程中引入的几何结构误差,提出了基于激光雷达坐标测量误差的系统误差模型及误差修正方法。建立了激光雷达坐标系组,分... 详细信息

为实现调频连续波(Frequency-modulated Continuous-wave,FMCW)激光雷达的高精度测量,针对激光雷达机械加工及装配过程中引入的几何结构误差,提出了基于激光雷达坐标测量误差的系统误差模型及误差修正方法。建立了激光雷达坐标系组,分析了空间坐标测量误差的来源。通过坐标系间的变换矩阵,实现了测量坐标的几何误差传递。然后,归并各坐标系的几何误差,建立了显式的激光雷达几何空间坐标误差表达式。并以此为基础,建立最小二乘优化目标,解算各项误差因子和修正后坐标。求得的误差因子可以用作后续坐标测量结果的修正。最后,基于该方法设计了一套以激光跟踪仪为高精度测量仪器、以靶球球心位置为标准点的标定场,使用激光跟踪仪与激光雷达测量相同位置的靶球完成系统误差修正。实验结果表明,经修正激光雷达空间距离测量的平均误差由0.0448%下降到0.0038%,误差极大值由4.17 mm下降到0.30 mm,验证了激光雷达几何结构误差标定和误差修正方法的有效性。

关键词：激光雷达几何结构误差最小二乘法误差修正

基于图像处理的桥梁橡胶支座剪切病害检测方法

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北京交通大学学报 2023年第5期47卷 16-24页

作者：梁栋张少杰周印霄王莲香张强刘跃飞河北工业大学土木与交通学院天津300401 邢台路桥建设集团有限公司河北邢台054000 天津市公路事业发展服务中心天津300170 天津公路工程设计研究院有限公司天津300171

针对梁桥板式橡胶支座环境复杂、位置深入、难以手动测量剪切变形角度大小的问题,提出了一种基于图像自动计算橡胶支座剪切角度,并评估其剪切病害程度的方法.首先运用引入深度可分离卷积和多尺度注意力模块的U-Net网络完成图像中支座的... 详细信息

针对梁桥板式橡胶支座环境复杂、位置深入、难以手动测量剪切变形角度大小的问题,提出了一种基于图像自动计算橡胶支座剪切角度,并评估其剪切病害程度的方法.首先运用引入深度可分离卷积和多尺度注意力模块的U-Net网络完成图像中支座的识别和分割;其次对分割得到的支座二值图像使用简化的Alpha Shapes算法提取支座轮廓线;然后对支座轮廓进行凸包检测后提取凸包点及其坐标;最后对凸包点利用最小二乘法完成直线拟合,通过计算直线间夹角得到支座剪切角度并评估其剪切病害程度.研究结果表明:改进的U-Net模型支座分割的F1值和交并比均达到了95%以上;在天津市某桥梁检测中,利用本文方法对相机采集支座图像角度计算结果和人工实测结果进行对比,两者角度最大误差1.3°,检测的剪切病害等级分类结果相同.本文方法在橡胶支座剪切病害检测方面可实现非接触、自动化检测,为实际工程应用提供了参考.

关键词：桥梁工程板式橡胶支座剪切病害图像处理 U-Net