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Solid-state alloying of Al-Mg alloys by accumulative roll-bonding:Microstructure and properties

journal of Materials Science & Technology 2022年第30期125卷 238-251页

作者： X.M.Mei Q.S.Mei j.y.li C.L.li L.Wan F.Chen Z.H.Chen T.Xu y.C.Wang y.y.Tan School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China Key Laboratory of Hydraulic Machinery Transients(Wuhan University) Ministry of EducationWuhan 430072China School of Mechanical Engineering Wuhan Polytechnic UniversityWuhan 430023China

In this study,a novel solid-state alloying approach was adopted to fabricate Al-Mg alloys with high Mg contents(C_(Mg)) by accumulative roll-bonding(ARB)of Al and Mg elemental materials to ultrahigh *** results showed that the degree of alloying increased with the increase of ARB cycles and a supersaturatedα-Al solid solution accompanied with nanoprecipitates was formed in the Al-Mg alloys by ARB to 70 *** as-prepared Al-Mg alloys exhibited enhanced mechanical properties,with a maximum tensile strength of∼615 MPa and a tensile elongation of∼10%at C_(Mg)=13 wt.%.The high strength can be attributed to different mechanisms,namely solid solution strengthening,grain boundary strengthening,dislocation strengthening,and precipitation *** Al-Mg alloys showed increased work hardening with increasing C_(Mg),due to the enhanced formation of ***,no obvious drop in the intergranular corrosion(IGC)resistance was found in the Al-Mg alloys with C_(Mg) up to 13 wt.%.Moreover,sensitization treatment was found to induce little decrease in the IGC resistance of the Al-Mg alloys with C_(Mg)≤13 wt.%.We found that the excellent IGC resistance was due to the suppression of grain boundary precipitation by the preferred formation of precipitates within the grains that were induced by *** study indicated the novelty of the present solid-state alloying approach to achieving a superior combination of high mechanical properties and IGC resistance in Al-Mg alloys.

关键词： Solid-state alloying Al-Mg alloys Mechanical properties IGC resistance ARB

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(−)- and (+)-Securidanes A and B, Natural Triarylmethane Enantiomers: Structure and Bioinspired Total Synthesis

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Research 2018年第1期2018卷 69-77页

作者： B.Zhou D.X.liu X.j.yuan j.y.li y.C.Xu j.li yli j.M.yue State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of Sciences555 Zuchongzhi RoadShanghai 201203China State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China

Two pairs of enantiomers,(−)and(+)-securidanes A(1 and 2)and B(3 and 4)featuring unprecedented triarylmethane(TAM)skeletons,were isolated from Securidaca *** structures were established by spectroscopic data,X-ray crystallography,and CD analysis.A plausible biosynthetic pathway for 1−4 based on the co-isolated precursors was *** total synthesis of 1−4was completed in high yield,which in turn corroborated the biosynthetic *** 1−4 showed good inhibition against protein tyrosine phosphatase 1B(PTP1B).Te molecular docking demonstrated that the strongest inhibitor 3(IC50=7.52�M)reaches deeper into the binding pocket and has an additional H-bond.

关键词： methane skeleton synthesis

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Preparing proton exchange membranes under radiation induced grafting method

Preparing proton exchange membranes under radiation induced ...

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第九届全国氢能学术会议

作者： y.L.ji,B.Deng and j.y.li Shanghai Institute of Applied Physics,China

＜正＞Polymer electrolyte fuel cells（PEFCs） are now in the focus as the most promising energy source for the vehicles and other mobile *** exchange membranes（PEMs） are the important component in the PEFCs,which separate the fuel gases and transport the *** the PEMs,Nafion（Dupont de Nemours Ltd） is the most widely used one. However,high cost of the per-fluorinated PEMs encouraged the development of the cheaper and better fluorinated or non-fluorinated PEMs.

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Prevalence and phylogenetic analyses of Trichuris suis in pigs in Hunan province,subtropical China

Prevalence and phylogenetic analyses of Trichuris suis in pi...

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第十一届全国寄生虫学青年工作者学术研讨会

作者： L.Tan A.B.Wang j.yi j.y.li W.liu College of Veterinary Medicine Hunan Agricultural University College of Veterinary Medicine South China Agricultural University

objective:The objective of this research was to investigate the prevalence of *** in pigs in Hunan ***:Total 2267 fresh fecal samples distributed in 28 pig farms from 7 different administrative regions(Hunan province) were evaluated for the existence of *** eggs using saturated Na Cl floating method,the internal transcribed spacer(ITS) regions from nuclear ribosomal DNA(r DNA) of 7 *** isolates were cloned and analyzed to determine genetic variation of the gained *** isolates in the present ***:The average infection rate of *** in pigs was 8.91% in Hunan province;nucleotide diversities were 1.0.5% and 0.8% for ITS-1 and ITS-2,*** analyses indicated that the collected *** isolates were available in the Genbank and clustered in three ***:The present investigation revealed high infection rates of *** in pigs in Hunan province,which shed light on making effective measures to prevent and control *** infection in pigs in Hunan province.

关键词： Trichuris suis infection pigs internal transcribed spacer(ITS) Hunan province

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急性一氧化碳中毒病人早期脑白质损伤与多巴胺转运体功能障碍的关系:一项扩散峰度成像和99Tc~m-TRODAT-SPECT研究

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国际医学放射学杂志 2019年第3期 371-371页

作者：张越 M.C.Chou P.H.Lai j.y.li Department of Medical Imaging and Radiological Sciences Kaohsiung Medical University

摘要目的一氧化碳中毒病人表现为脑白质(WM)损伤、黑质改变、纹状体多巴胺转运体功能障碍及帕金森病症状。本研究目的是采用扩散峰度成像(DKI)和单光子发射体

关键词：急性一氧化碳中毒多巴胺转运体扩散峰度成像 Tc~m-TRODAT-SPECT 白质损伤功能障碍

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Polymorphisms in MC4R gene and correlations with meat traits in cattle

Polymorphisms in MC4R gene and correlations with meat traits...

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第十五次全国动物遗传育种学术讨论会

作者： M.Huang~(1,2),j.L.Wang~2,X.Gao~1,j.y.li~1,H.y.Ren~1,j.B.Chen~1,S.Z.Xu~(1,2) 1.Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing,China 2.College of Animal Science and Technology,Northwest A & F University,yangling,China

＜正＞Introduction The melanocortin-4 receptor（MC4R） is a G-protein coupled receptor expressed in the brain,predominantly in the ***4R plays an important role in energy homeostasis and body-weight ***4R is an intron... 详细信息

关键词： Cattle SNP MC4R Meat trait Marker-assisted selection

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Exercise preconditioning alleviates ischemia-induced memory deficits by increasing circulating adiponectin

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Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui Zhang Sonata S y yau Kwok-Fai So li Zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key Laboratory of CNS Regeneration(Ministry of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina State Key Laboratory of Brain and Cognitive Science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercise and Brain Science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after *** this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral *** also examined the role of exercise-induced circulating factors in these *** mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery *** found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory *** analysis showed that circulating adiponectin plays a critical role in these preventive effects of *** activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise *** summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.

关键词： adiponectin cerebral ischemia exercise pre-conditioning hippocampus memory function middle cerebral artery occlusion prefrontal cortex synaptic proteins treadmill exercise

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Gene therapy for spinal muscular atrophy:perspectives on the possibility of optimizing SMN1 delivery to correct all neurological and systemic perturbations

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Neural Regeneration Research 2025年第7期20卷 2011-2012页

作者： Sharon j.Brown Rafael j.yáñez-Muñoz Heidi R.Fuller School of Pharmacy and Bioengineering Keele UniversityKeeleUK Wolfson Center for Inherited Neuromuscular Disease TORCH BuildingRJAH Orthopaedic HospitalOswestryUK *** Center of Gene and Cell TherapyDepartment of Biological SciencesSchool of Life Sciences and the EnvironmentRoyal Holloway University of LondonEghamUK

Spinal muscular atrophy(SMA)is a genetic condition that results in selective lower motor neuron loss with concomitant muscle weakness and *** genetic cause of SMA was understood in 1995 when loss or impairment of the survival motor neuron 1(SMN1)gene was identified as the main contributing factor(Lefebvre et al.,1995).This,in combination with the discovery that humans have a“back-up”gene,SMN2,which can produce low levels(approximately 10%)of the full-length functional SMN protein,has led to the generation of SMA-specific gene *** was traditionally classified according to age of symptom onset and developmental milestones achieved,with life expectancy and severity varying between ***,SMN2 copy number is used as a proxy for the prediction of disease severity,with higher SMN2 copy number typically being associated with reduced severity of SMA,although this relationship is not absolute:some individuals with low SMN2 copy number have less severe SMA phenotypes and vice ***,the etiology of SMA is further complicated by other factors,such as non-typical nucleotide variants and SMN2-independent modifiers of disease severity.

关键词： atrophy traditionally absolute

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Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： li An jianyi li yuanmiao Sun jiamin Zhu justin Zhu yeow Seow Hong Zhang Nan Zhang Pinxian Xi Zhichuan j.Xu Chun‑Hua yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

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Two-plasmon-decay instability stimulated by dual laser beams in inertial confinement fusion

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Matter and Radiation at Extremes 2025年第1期10卷 48-56页

作者： C.-W.lian y.ji R.yan j.li L.-F.Wang y.-K.Ding j.Zheng Department of Modern Mechanics University of Science and Technology of ChinaHefeiAnhui 230026China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China Department of Plasma Physics and Fusion Engineering University of Science and Technology of ChinaHefei 230026China Institute of Applied Physics and Computational Mathematics Beijing 100088China

Two-plasmon-decay instability(TPD)poses a critical target preheating risk in direct-drive inertial confinement *** this paper,TPD collectively driven by dual laser beams consisting of a normal-incidence laser beam(Beam-N)and a large-angle-incidence laser beam(Beam-L)is investigated via particle-in-cell *** is found that significant TPD growth can develop in this regime at previously unexpected low laser intensities if the intensity of Beam-L exceeds the large-angle-incidence *** beams contribute to the growth of TPD in a“seed-amplification”manner in which the absolute instability driven by Beam-L provides the seeds that are convectively amplified by Beam-N,making TPD energetically important and causing significant pump depletion and hot-electron generation.

关键词： laser pump decay

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