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小麦籽粒胚乳发育及其与营养品质的关系

麦类作物学报 2025年第1期45卷 96-102页

作者：郑彦坤安庆师范大学生命科学学院安徽安庆246133

小麦是人类的主要粮食作物之一,其籽粒是绿色有机食品与营养保健食品的重要原料。小麦籽粒中胚乳组织可分为胚乳运输细胞与贮藏细胞,前者是养分进入胚乳与胚的关键通道,后者是籽粒营养物质积累的主体,二者的发育状况都与籽粒的营养品质... 详细信息

小麦是人类的主要粮食作物之一,其籽粒是绿色有机食品与营养保健食品的重要原料。小麦籽粒中胚乳组织可分为胚乳运输细胞与贮藏细胞,前者是养分进入胚乳与胚的关键通道,后者是籽粒营养物质积累的主体,二者的发育状况都与籽粒的营养品质密切相关。本文综述了胚乳运输细胞与贮藏细胞的发育规律及其作用机制,总结了小麦籽粒胚乳发育及其与营养品质的关系,为高产优质小麦品种的培育提供理论依据。

关键词：小麦胚乳发育营养品质

Deformation Mechanism of Bimodal Structured 2205 Duplex Stainless Steel in Two Yield Stages

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Journal of Wuhan University of Technology(Materials Science) 2023年第1期38卷 184-191页

作者：盛捷 DU Mingchen LI Yufeng MA Guocai CHEN Weiqian zheng Yuehong ZHAN Faqi REN junqiang G I Raab 喇培清 State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials Lanzhou University of TechnologyLanzhou 730050China Jiuquan Iron and Steel(Group)Co. Ltd.Jiayuguan 735100China Key Laboratory of Solar Power System Engineering Jiuquan Vocational and Technical CollegeJiuquan 735000China Institute of Physics of Advanced Materials Ufa State Aviation Technical University12 K.Marx StreetUfa 450008Russia

A kind of micro/nanostructured 2205 duplex stainless steel(DSS)with uniform distribution of nanocrystals was prepared via aluminothermic reaction *** analysis of stress-strain curve showed that the fracture strength and elongation of the specimen were 946 MPa and 24.7%,*** present,the research on microstructure of bimodal 2205 DSS at room temperature(RT)mainly depended on scanning electron microscope(SEM)observation after loading *** test result indicates that there are two different yield stages in stress-strain curve of specimen during tensile *** microstructure of duplex bimodal structured stainless steel consists of two pairs of soft hard regions and *** studying deformation mechanism of bimodal structured stainless steel,the interaction between soft phase and hard phase are *** principle of composition design and microstructure control of typical duplex stainless steel is obtained,which provides an important research basis for designing of advanced duplex stainless steel.

关键词： 2205 duplex stainless steel bimodal structure in-situ tensile test deformation mechanism two different yield stages

Resting-state brain network remodeling after different nerve reconstruction surgeries:a functional magnetic resonance imaging study in brachial plexus injury rats

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Neural Regeneration Research 2025年第5期20卷 1495-1504页

作者： Yunting Xiang Xiangxin Xing Xuyun Hua Yuwen Zhang Xin Xue Jiajia Wu Mouxiong zheng He Wang Jianguang Xu School of Rehabilitation Science Shanghai University of Traditional Chinese MedicineShanghaiChina Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghaiChina Department of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Department of Traumatology and Orthopedics Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of EducationShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Distinct brain remodeling has been found after different nerve reconstruction strategies,including motor representation of the affected ***,differences among reconstruction strategies at the brain network level have not been *** study aimed to explore intranetwork changes related to altered peripheral neural pathways after different nerve reconstruction surgeries,including nerve repair,endto-end nerve transfer,and end-to-side nerve ***–Dawley rats underwent complete left brachial plexus transection and were divided into four equal groups of eight:no nerve repair,grafted nerve repair,phrenic nerve end-to-end transfer,and end-to-side transfer with a graft sutured to the anterior upper ***-state brain functional magnetic resonance imaging was obtained 7 months after *** independent component analysis algorithm was utilized to identify group-level network components of interest and extract resting-state functional connectivity values of each voxel within the *** in intra-network resting-state functional connectivity were compared among the *** muscle reinnervation was assessed by behavioral observation(elbow flexion)and *** results showed that alterations in the sensorimotor and interoception networks were mostly related to changes in the peripheral neural *** repair was related to enhanced connectivity within the sensorimotor network,while end-to-side nerve transfer might be more beneficial for restoring control over the affected limb by the original motor *** thalamic-cortical pathway was enhanced within the interoception network after nerve repair and end-to-end nerve *** areas related to cognition and emotion were enhanced after end-to-side nerve *** study revealed important brain networks related to different nerve *** networks may be potential targets for enhancing motor recovery.

关键词： brain functional networks end-to-end nerve transfer end-to-side nerve transfer independent component analysis nerve repair peripheral plexus injury resting-state functional connectivity

NOX4 exacerbates Parkinson's disease pathology by promoting neuronal ferroptosis and neuroinflammation

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Neural Regeneration Research 2025年第7期20卷 2038-2052页

作者： Zhihao Lin Changzhou Ying Xiaoli Si Naijia Xue Yi Liu Ran zheng Ying Chen Jiali Pu Baorong Zhang Department of Neurology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Parkinson's disease is primarily caused by the loss of dopaminergic neurons in the substantia nigra ***,a novel form of regulated cell death characterized by iron accumulation and lipid peroxidation,plays a vital role in the death of dopaminergic ***,the molecular mechanisms underlying ferroptosis in dopaminergic neurons have not yet been completely *** oxidase 4 is related to oxidative stress,however,whether it regulates dopaminergic neuronal ferroptosis remains *** aim of this study was to determine whether NADPH oxidase 4 is involved in dopaminergic neuronal ferroptosis,and if so,by what *** found that the transcriptional regulator activating transcription factor 3 increased NADPH oxidase 4 expression in dopaminergic neurons and astrocytes in an 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced Parkinson's disease *** oxidase 4 inhibition improved the behavioral impairments observed in the Parkinson's disease model animals and reduced the death of dopaminergic ***,NADPH oxidase 4 inhibition reduced lipid peroxidation and iron accumulation in the substantia nigra of the Parkinson's disease model ***,we found that NADPH oxidase 4 interacted with activated protein kinase Cαto prevent ferroptosis of dopaminergic ***,by lowering the astrocytic lipocalin-2 expression,NADPH oxidase 4 inhibition reduced 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced *** findings demonstrate that NADPH oxidase 4 promotes ferroptosis of dopaminergic neurons and neuroinflammation,which contribute to dopaminergic neuron death,suggesting that NADPH oxidase 4 is a possible therapeutic target for Parkinson's disease.

关键词： dopaminergic neuron ferroptosis NADPH oxidase 4(NOX4) neuroinflammation Parkinson's disease

巩固、发展与抗日:中央红军东征期间与各方势力之周旋

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河北学刊 2025年第1期45卷 218-224页

作者：郑康奇南开大学历史学院

1935年底,红军在陕北会师后积极进行扩红与筹粮运动。与此同时,中共中央审时度势决定进行东征,以图缓解陕北地区兵员、粮源的紧张局面。1936年2至5月,中央红军东渡黄河与阎锡山部作战,蒋介石也借机派兵进入山西。在红军东征的过程中,双... 详细信息

1935年底,红军在陕北会师后积极进行扩红与筹粮运动。与此同时,中共中央审时度势决定进行东征,以图缓解陕北地区兵员、粮源的紧张局面。1936年2至5月,中央红军东渡黄河与阎锡山部作战,蒋介石也借机派兵进入山西。在红军东征的过程中,双方高层展开了一系列的斗争与博弈。中共在东征中积极争取张学良与杨虎城部,统一战线策略取得了成功。这一时期,国际政治局势变幻莫测,中国共产党与共产国际的关系也产生了一些微妙变化。在与国际国内各方的政治博弈中,中共的政策逐渐走向成熟,为第二次国共合作奠定了重要基础。

关键词：红军东征扩红政治势力抗日战争

Passive activity enhances residual control ability in patients with complete spinal cord injury

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Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He Jia zheng Hongming Bai Jia-Sheng Rao Guiyun Song Wei Song Xiaoguang Li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

The low-latitude sodium layer:comparative data from lidar observations at Hainan,China and São Paulo,Brazil

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Earth and Planetary Physics 2025年第1期9卷 39-53页

作者： Fang Wu Jing Jiao GuoTao Yang LiFang Du zhengKuan Liu HaoRan zheng JiXin Guo ShaoHua Gong YaJun Zhu State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Hainan National Field Science Observation and Research Observatory for Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China China-Brazil Joint Laboratory for Space Weather NSSC/INPESão Josédos Campos 12227-010Brazil School of Physics and Electronics Engineering Hainan Normal UniversityHaikou 571158China

Physical and chemical processes observed in the mesosphere and thermosphere above the Earth’s low latitudes are complex and highly interrelated to activity in the low-latitude *** sodium detected by lidar can yield clues to dynamic and chemical processes in these spatial layers above the Earth’s *** paper is based on sodium layer data collected at two low-latitude stations,one in the northern hemisphere and one in the *** low-latitude sodium layer exhibits conspicuous seasonal variations in shape,density,and altitude;these variations are similar between Earth’s hemispheres:sodium layer density at both stations reaches its seasonal maximum in autumn and minimum in ***,maximal Na density over Brazil is greater than that over *** variations of Na density above the two low-latitude stations are also similar;at both,maxima are observed before *** variations of the Na layer over Brazil that differ from those observed in the northern hemisphere may be related to the South Atlantic Magnetic Anomaly(SAMA)or fountain *** suggest that low-latitude Na layer data may provide useful additional evidence that could significantly improve the low-latitude part of the WACCM-Na model.

关键词： metallic sodium layer seasonal variation nocturnal variation lidar

Nanograting-Based Dynamic Structural Colors Using Heterogeneous Materials

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NANO-MICRO LETTERS 2025年第1期17卷 1-14页

作者： Wang, Jingang Yu, Haibo zheng, Jianchen Zhang, Yuzhao Guo, Hongji Qiu, Ye Wang, Xiaoduo Yang, Yongliang Liu, Lianqing Chinese Acad Sci Shenyang Inst Automat State Key Lab Robot Shenyang 110016 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

A 2.5-dimensional dynamic structural color based on nanogratings of heterogeneous materials was proposed by interweaving a pH-responsive hydrogel with IP-L *** nanogrid structures exhibit brilliant tuneable structural color, high sensitivity, and ultrafast recovery speeds in response to *** 4D printing-based grayscale design approach was proposed for the patterned encoding and array printing of dynamic structural colors, promoting their application in patterned printing, information encryption, and microfluidic chip sensing. Dynamic structural colors can change in response to different environmental stimuli. This ability remains effective even when the size of the species responsible for the structural color is reduced to a few micrometers, providing a promising sensing mechanism for solving microenvironmental sensing problems in micro-robotics and microfluidics. However, the lack of dynamic structural colors that can encode rapidly, easily integrate, and accurately reflect changes in physical quantities hinders their use in microscale sensing applications. Herein, we present a 2.5-dimensional dynamic structural color based on nanogratings of heterogeneous materials, which were obtained by interweaving a pH-responsive hydrogel with an IP-L photoresist. Transverse gratings printed with pH-responsive hydrogels elongated the period of longitudinal grating in the swollen state, resulting in pH-tuned structural colors at a 45 degrees incidence. Moreover, the patterned encoding and array printing of dynamic structural colors were achieved using grayscale stripe images to accurately encode the periods and heights of the nanogrid structures. Overall, dynamic structural color networks exhibit promising potential for applications in information encryption and in situ sensing for microfluidic chips.

关键词： Dynamic structural colors Four-dimensional printing pH-responsive Nanogrid Heterogeneous materials

Polymerization of pyrrole induced by pillar[5]arene functionalized graphene for supercapacitor electrode

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Chinese Chemical Letters 2022年第11期33卷 4846-4849页

作者： Fang Guo junqiang Guo Zhiqiang zheng Tao Xia Aadil Nabi Chishti Liwei Lin Wang Zhang Guowang Diao School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Department of Applied Bioengineering Graduate School of Convergence Science and TechnologySeoul National UniversitySuwon 443-270South Korea

Conducting polymer is an important electrode material for supercapacitors because of its high initial specific ***,a novel nanocomposite composed of polypyrrole(PPy)film homogeneously immobilized on the pillar[5]arene functionalized reduced graphene oxide nanosheets(RGO-HP5 A-PPy)was successfully ***-HP5 A induced pyrrole to polymerize on the graphene surface and the specific capacitance loss caused by PPy agglomeration was ***,the specific capacitance of RGOHP5 A-PPy was up to 495 F/g at 1 A/*** with pure PPy(319 F/g),the specific capacitance was increased by 55%.The specific capacitance retention of the assembled symmetric supercapacitor reached76%after 10,000 cycles at 5 A/*** study gave full play to the advantages of pillar[5]arene,graphene and PPy,and was expected to promote the development of supramolecular functionalized composites in energy storage.

关键词： Nanocomposite Pillararene Graphene Polypyrrole Supercapacitor