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种子老化对美洲狼尾草种质资源遗传完整性的影响

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草业科学 2020年第8期37卷 1508-1515页

作者：但旭明王成然武炳超王蕊姜杏王芮嘉苏晏宁张婷婷黄琳凯四川农业大学动物科技学院草业科学系四川成都611130

为确定适合美洲狼尾草(Pennisetum glaucum)种子更新的发芽率,采用人工梯度老化的方法,对其在45℃、99%相对湿度条件下分别处理0、4、8、12、16、20、24 h,再对梯度老化后的材料进行遗传完整性分析。结果表明:与对照组相比,经人工梯度... 详细信息

为确定适合美洲狼尾草(Pennisetum glaucum)种子更新的发芽率,采用人工梯度老化的方法,对其在45℃、99%相对湿度条件下分别处理0、4、8、12、16、20、24 h,再对梯度老化后的材料进行遗传完整性分析。结果表明:与对照组相比,经人工梯度老化后的美洲狼尾草的发芽率、多态性条带百分率(percentage of polymorphic bands,PPB)、等位基因数(number of alleles,Na)、有效等位基因数(effective number of alleles,Ne)、Nei’s基因多样性指数(Nei's gene diversity index,H)和Shannon-Wiener多样性指数(Shannon's information index,I)均有不同程度降低,且与老化时间负相关;发芽率为68.23%时,除等位基因数以外,其他遗传多样性相关参数均与对照组差异显著(P<0.05),说明美洲狼尾草种子更新的发芽率为68.23%。综上,当美洲狼尾草种子的发芽率为68.23%时,应进行种质资源的更新;gSSR分子标记可以作为探究种子老化对种质资源遗传完整性的影响的检验手段,对于异质种质资源材料,低发芽率不利于种质资源遗传完整性的保持。

关键词：种子老化美洲狼尾草 gSSR 遗传完整性种子库更新

Quickly obtaining densely dispersed coherent particles in steel matrix and its related mechanical property

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 111-118页

作者： Xiaoxiao wang Qingsong Huang School of Chemical Engineering Sichuan UniversityChengdu 610065China

Densely distributed coherent nanoparticles(DCN)in steel matrix can enhance the work-hardening ability and ductility of steel *** the routes to this end can be generally classified into the liquid-solid route and the solid-solid ***,the formation of DCN structures in steel requires long processes and complex *** far,obtaining steel with coherent particle enhancement in a short time remains a bottleneck,and some necessary steps remain ***,we show a high-efficiency liquid-phase refining process reinforced by a dynamic magnetic ***-Y-Mn-O particles had an average size of around(3.53±1.21)nm and can be obtained in just around 180 *** small nanoparticles were coherent with the matrix,implying no accumulated dislocations between the particles and the steel *** findings have a potential application for improving material machining capacity,creep resistance,and radiation resistance.

关键词： ferritic steels coherent particles microstructure compression test work hardening

Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： Song He Li Li Sai wang Shao-Jiang wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

Efficient and Stable Photoassisted Lithium‑Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

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Nano-Micro Letters 2025年第3期17卷 440-454页

作者： Zelin Ma Shiyao wang Zhuangzhuang Ma Juan Li Luomeng Zhao Zhihuan Li Shiyuan wang Yazhou Shuang Jiulong wang Fang wang Weiwei Xia Jie Jian Yibo He Junjie wang Pengfei Guo Hongqiang wang State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing School of Materials Science and Engineering DepartmentNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063People’s Republic of China Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi’an 710119People’s Republic of China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries(PLIBs),while there is always a request on fast carrier transport in electrochemical active *** work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic *** employed in PLIBs,it was found effective for synchronously enhanced photocharge separation and transport in light charging ***,experimental photon spectroscopy,finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO_(2),as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky *** from these merits,several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set,including the capacity of 276 mAh g^(−1)at 0.2 A g^(−1)under illumination,photoconversion efficiency of 1.276%at 3 A g^(−1),less capacity and Columbic efficiency loss even through 200 *** results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals

微晶纤维素辅助制备C-TiO2复合材料及其对Cd2+的吸附性能

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复合材料学报 2020年第2期37卷 415-421页

作者：王瑞佳聂敬恒樊源源李楠闫兴磊商旭婷张继国潘清江郭元茹东北林业大学材料科学与工程学院生物质材料科学与技术教育部重点实验室

采用溶胶-凝胶法,利用微晶纤维素(CMC)辅助制备了C-TiO2复合材料,并对其进行了结构、组成和形貌的分析。XRD分析结果表明,所制备的C-TiO2复合材料样品为具有较高的结晶度的锐钛矿相TiO2和石墨碳的复合材料;SEM、 TEM和XPS分析表明, CMC... 详细信息

采用溶胶-凝胶法,利用微晶纤维素(CMC)辅助制备了C-TiO2复合材料,并对其进行了结构、组成和形貌的分析。XRD分析结果表明,所制备的C-TiO2复合材料样品为具有较高的结晶度的锐钛矿相TiO2和石墨碳的复合材料;SEM、 TEM和XPS分析表明, CMC在C-TiO2复合材料的制备中起到双重作用:既是复合材料中C的前驱体,同时会增大所制备的TiO2的分散程度。同时,利用Cd2+考察了C-TiO2复合材料样品对重金属离子的吸附能力。实验表明,与未添加CMC的TiO2相比,所制备的C-TiO2复合材料对重金属离子具有很好的吸附性能,吸附量达到37.15 mg·g-1,是未添加CMC的平衡吸附量(17.32 mg·g-1)的214.5%。C-TiO2优异的吸附性能将使其在Cd2+的污水处理上具有很好的应用前景。

关键词：微晶纤维素碳(C) TiO2 镉离子吸附

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan wang Fan Zhang Xingyu Zhou Qian wang Changyu Liu Yangyang Liu Hui wang Xiaojie Liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

EZH2-dependent myelination following sciatic nerve injury

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Neural Regeneration Research 2025年第8期20卷 2382-2394页

作者： Hui Zhu Li Mu Xi Xu Tianyi Huang Ying wang Siyuan Xu Yiting wang Wencong wang Zhiping wang Hongkui wang Chengbin Xue Research Center of Clinical Medicine Affiliated Hospital of Nantong UniversityKey Laboratory of Neuroregeneration of Jiangsu and Ministry of EducationCo-innovation Center of NeuroregenerationNMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology ProductsNantong UniversityNantongJiangsu ProvinceChina Medical School of Nantong University NantongJiangsu ProvinceChina Department of Neurology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Department of Rehabilitation Medicine Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Department of Critical Care Medicine Nantong Fourth People’s HospitalNantongJiangsu ProvinceChina

Demyelination and remyelination have been major focal points in the study of peripheral nerve regeneration following peripheral nerve ***,the gene regulatory network of regenerated myelin differs from that of native *** of enhancer of zeste homolog 2(EZH2)hinders the differentiation,maturation,and myelination of Schwann cells in *** further determine the role of EZH2 in myelination and recovery post-peripheral nerve injury,conditional knockout mice lacking Ezh2 in Schwann cells(Ezh2^(fl/fl);Dhh-Cre and Ezh2^(fl/fl);Mpz-Cre)were *** results show that a significant proportion of axons in the sciatic nerve of Ezh2-depleted mice remain *** highlights the crucial role of Ezh2 in initiating Schwann cell ***,we observed that 21 days after inducing a sciatic nerve crush injury in these mice,most axons had remyelinated at the injury site in the control nerve,while Ezh2^(fl/fl);Mpz-Cre mice had significantly fewer remyelinated axons compared with their wild-type *** suggests that the absence of Ezh2 in Schwann cells impairs myelin formation and *** conclusion,EZH2 has emerged as a pivotal regulatory factor in the process of demyelination and myelin regeneration following peripheral nerve *** EZH2 activity during these processes may offer a promising therapeutic target for the treatment of peripheral nerve injuries.

关键词： demyelination EZH2 myelination peripheral nerve injury PRC2 remyelination Schwann cells sciatic nerve crush sciatic nerve transection

RF Optimizer Model for Predicting Compressive Strength of Recycled Concrete

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 215-223页

作者： LIU Lin wang Liuyan wang Hui SUN Huayue School of Civil Engineering and Architecture Shenyang UniversityShenyang 110000China

Traditional machine learning(ML)encounters the challenge of parameter adjustment when predicting the compressive strength of reclaimed *** address this issue,we introduce two optimized hybrid models:the Bayesian optimization model(B-RF)and the optimal model(Stacking model).These models are applied to a data set comprising 438 observations with five input variables,with the aim of predicting the compressive strength of reclaimed ***,we evaluate the performance of the optimized models in comparison to traditional machine learning models,such as support vector regression(SVR),decision tree(DT),and random forest(RF).The results reveal that the Stacking model exhibits superior predictive performance,with evaluation indices including R2=0.825,MAE=2.818 and MSE=14.265,surpassing the traditional ***,we also performed a characteristic importance analysis on the input variables,and we concluded that cement had the greatest influence on the compressive strength of reclaimed concrete,followed by ***,the Stacking model can be recommended as a compressive strength prediction tool to partially replace laboratory compressive strength testing,resulting in time and cost savings.

关键词： machine learning recycled concrete compressive strength

间充质干细胞外泌体在创面修复相关信号通路中的作用研究进展

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中华损伤与修复杂志（电子版） 2022年第5期17卷 440-444页

作者：王睿甲巴特黄瑞娟王宏宇内蒙古医科大学第三临床医学院内蒙古自治区呼和浩特市010110 内蒙古包钢医院烧伤外科内蒙古烧伤研究所内蒙古自治区包头市014010

创面修复是感染或机械创伤引起的损伤后修复和恢复组织体内平衡的过程。研究表明,间充质干细胞外泌体作为细胞交流的媒介参与了创面修复。本文归纳了创面修复过程中Wnt/β-连环蛋白、转化生长因子-β、磷脂酰肌醇3-激酶/蛋白激酶B(PI3K/... 详细信息

创面修复是感染或机械创伤引起的损伤后修复和恢复组织体内平衡的过程。研究表明,间充质干细胞外泌体作为细胞交流的媒介参与了创面修复。本文归纳了创面修复过程中Wnt/β-连环蛋白、转化生长因子-β、磷脂酰肌醇3-激酶/蛋白激酶B(PI3K/Akt)等信号通路的作用和机制,同时就间充质干细胞外泌体参与调节上述通路的研究进展进行了回顾总结,并对间充质干细胞外泌体在创面修复中的应用前景和发展瓶颈进行了展望。

关键词：干细胞外泌体创面修复信号通路