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Effect of cobalt substitution for nickel on microstructural evolution and hy.rogen storage properties of La_(0.66)Mg_(0.34)Ni_(3.5-x)Co_(x) alloy.

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Journal of Rare Earths 2024年第5期42卷 930-939,I0004页

作者： Xincong He huazhou hu Ruizhu Tang Wenhao Zhou Houqun Xiao Xiaoxuan Zhang Chuanming ma Qingjun Chen School of Rare Earths University Science&Technology of ChinaHefei230026China Key.Laboratory.of Rare Earths Chinese Academy of SciencesJiangxi Institute of Rare EarthsGanjiang Innovation AcademyChinese Academy of SciencesGanzhou341000China

Superlattice hy.rogen storage alloy. offer a compelling advantage with rapid hy.riding rate and high storage ***,its practical applications face challenges including complex structure,low dehy.riding capacity.and cy.lic *** this work,we successfully.prepared La_(0.66)Mg_(0.34)Ni_(3.5-x)Co_(x) superlattice hy.rogen storage alloy. with enhanced dehy.riding capacity.and stability.by.partially.substituting Co for Ni.X-ray.diffraction(XRD)refinements analy.is reveals the presence of(La,Mg)_(3)Ni_(9),(La,Mg)_5Ni_(19),and LaNi_(5) phases within the *** Co substitution in the La_(0.06)Mg_(0.34)Ni_(3.4)Co_(0.1)alloy.there is a significant increase in content of the(La,Mg)_(3)Ni_(9) phase and a reduction in the hy.teresis factor,resulting in an improved reversible hy.rogen storage capacity.from 1.45 wt%to 1.60 wt%.The dehy.riding kinetics of the alloy.is controlled by.diffusion model with an activation energy.of 8.40 kJ/***,the dehy.riding enthalpy.value of the Co-substituted alloy.decreases from 30.84 to 29.85 kJ/***,the cy.ling performance of the alloy.after Co substitution exhibits excellent stability.with a capacity.retention rate of 92.3%after 100 *** findings provide valuable insights for the development of cost-effective hy.rogen storage materials.

关键词： Superlattice hy.rogen storage alloy Co substitution Microstructure Kinetics Thermody.amics Rare earths

Improving chitosan-based composite membrane by.introducing a novel hy.rid functional nano-hy.roxy.patite with carboxy.ethy. cellulose and phy.ic acid

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Frontiers of Chemical Science and Engineering 2024年第6期18卷 1-15页

作者： Liuy.n Jiang y.ngjun ma Shuo Tang y.qing Wang y.n Zhang Shengpei Su Xiang hu Jun He National&Local Joint Engineering Laboratory.for New Petro-chemical materials and Fine Utilization of Resources Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research(Ministry of Education)College of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China State Key.Laboratory.Developmental Biology.of Freshwater Fish School of Life ScienceHunan Normal UniversityChangsha 410081China hunan Provincial Key.Laboratory.of Regional Hereditary.Birth Defects Prevention and Control Changsha Hospital for Matemal&Child Health Care Aiffiliated to Hunan Normal UniversityChangsha 410081China

A functional hy.rid nano-hy.roxy.patite(carboxy.ethy. cellulose-phy.ic acid-n-HA,CMC-PA-n-HA)was prepared by.adding CMC and *** results of Fourier transformation infrared spectra,X-ray.diffraction,thermal gravimetric analy.is and dispersion experiments indicated that the addition of CMC and PA affected the morphology.cry.tallinity.and cry.tal size of hy.rid n-HA,and CMC endowed hy.rid n-HA with excellent *** electron microscope results showed that CMC-PA-n-HA nanoparticle could be uniformly.dispersed in chitosan(CS)matrix to obtain composite membrane by.casting technology.so that the highest tensile strength of CMC-PA-n-HA/CS composite membrane was 69.64%and 144.45%higher than that of CS membrane and n-HA/CS composite membrane,*** angle test showed that CMC-PA-n-HA effectively.improved hy.rophilicity.of the CS *** simulated body.fluid immersion results indicated that the CMC-PA-n-HA/CS composite membrane not only.exhibited good degradability.but also promoted bone-like apatite *** cell proliferation experiments proved that the introduction of PA made the composite membrane have better cell adhesion and proliferation *** tests demonstrated that PA could effectively.improve the antibacterial properties of the composite membrane,which is expected to be applied as guide bone tissue regeneration membrane.

关键词： nano-hy.roxy.patite chitosan dispersion guide bone tissue regeneration membrane

Individualized intensive insulin therapy.of diabetes: Not only.thegoal, but also the time

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World Journal of Diabetes 2024年第1期15卷 11-14页

作者： y.n hu Hong-Jing Chen Jian-hua ma Department of Endocrinology The Affiliated Wuxi People's Hospital of Nanjing Medical UniversityWuxi People's HospitalWuxi Medical CenterNanjing Medical UniversityWuxi 214023Jiangsu ProvinceChina Department of Endocrinology Nanjing First HospitalNanjing 210000Jiangsu ProvinceChina

Intensive insulin therapy.has been extensively.used to control blood glucose levels because of its ability.to reduce the risk of chronic complications of *** to current guidelines,intensive gly.emic control requires individu-alized glucose goals rather than as low as *** intensive therapy.rapid blood glucose reduction can aggravate microvascular and macrovascular complications,and prolonged overuse of insulin can lead to treatment-induced neuropathy.and retinopathy.hy.ogly.emia,obesity.lipody.trophy.and insulin antibody.***,we need to develop individualized hy.ogly.emic plans for patients with diabetes,including the time required for blood glucose normalization and the duration of intensive insulin therapy.which deserves further study.

关键词： Diabetes Intensive therapy Insulin Treatment-induced neuropathy

Effect of temperature on tribofilm growth and the lubrication of the piston ring-cy.inder liner sy.tem in two-stroke marine engines

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Friction 2024年第8期12卷 1858-1881页

作者： Xiuy. Ly. Jiang hu y.nchuan WANG Jinlu SHENG Xuan ma Tongy.ng LI Chang GE Xiqun LU Chongqing Jiaotong University Chongqing 400074China Chongqing Metropolitan College of Science and Technology Chongqing 402167China Harbin Engineering University Harbin 150001China y.ntai Zhongke Research Institute of Advanced materials and Green Chemical Engineering Yantai 264006China State Key.Laboratory.of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

This study.is an optimized extension based on the authors’previous research on the tribo-chemical reaction under constant temperature field of two-stroke internal combustion engines(ICEs).It establishes a coupled analy.is model that considers the tribo-chemical reactions,dy.amic contact,and interface lubrication of the piston ring-cy.inder liner(PRCL)sy.tem under transient temperature *** this study.for the first time,the prediction of the tribofilm thickness and its influence on the surface micro-topography.the comprehensive roughness)are coupled in the working temperature field of the PRCL sy.tem,forming an effective model framework and providing a model basis and analy.ical basis for subsequent *** study.findings reveal that by.incorporating temperature and tribofilm into the simulation model,the average friction deviation throughout the stroke decreases from 8.92%to 0.93%when compared to experimental ***,the deviation during the combustion regime reduces from 39.56%to 7.34%.The proposed coupled model provides a valuable tool for the evaluation of lubrication performance of the PRCL sy.tem and supports the analy.is software forward design in two-stroke ICEs.

关键词： tribofilm piston ring-cy.inder liner(PRCL)sy.tem temperature comprehensive roughness two-stroke internal combustion engines(ICEs)

A Transcriptome Analy.is of Neural Tissue of Litopenaeus vannamei After Acute Exposure to Alexandrium pacificum

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Journal of Ocean University.of China 2024年第2期23卷 529-538页

作者： y.NG huijie huANG Xianghu ma.yukun hu Zhangxi ZHANG Ning LI Changling ZHANG y.lei Department of Aquaculture College of FisheriesGuangdong Ocean UniversityZhanjiang 524088China Guangdong Laboratory.of marine Ecology.Environment Monitoring and Warning Zhanjiang 524088China

Alexandrium pacificum(***)is a ty.ical paraly.ic shellfish poisonous *** algal blooms(HABs)caused by.this species can bring serious environmental problems and economic losses to the aquaculture *** this study.transcriptome sequencing and analy.es were performed on the neural tissue of Litopenaeus vannamei(***)after acute exposure to *** disrupted solution for 72 h,and differentially.expressed genes(DEGs)were *** results showed that,compared with the control samples,300 DEGs were identified in the experimental group,of which 194 were up-regulated,and 106 *** gene ontology.GO)functional enrichment analy.is showed that DEGs were significantly.enriched in the cortical cy.oskeleton organization,troponin complex,amy.o-alpha-1,6-glucosidase and thy.idine *** ency.lopedia of genes and genomes(KEGG)enrichment analy.is found that DEGs were mainly.enriched in the oxidative phosphory.ation process,intercellular tight junctions and *** results showed that the proteogly.ans,signaling pathway.,and various metabolic processes that regulate cell proliferation,differentiation,and apoptosis all play.d an essential role in the response of *** to *** toxins.

关键词： Litopenaeus vannamei Alexandrium pacificum paraly.ic shellfish poisoning transcriptome nerve

Bio-soft matter derived from traditional Chinese medicine:Characterizations of hierarchical structure,assembly.mechanism,and bey.nd

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Journal of Pharmaceutical Analy.is 2024年第6期14卷 823-839页

作者： Guiy. y.ng y.e Liu y.y.ng hu y.e y.an y.nan Qin Quan Li Shuangcheng ma School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing102488China Institute for Control of Chinese Traditional Medicine and Ethnic Medicine National Institutes for Food and Drug ControlBeijing100050China Tianjin Key.Laboratory.of Therapeutic Substance of Traditional Chinese Medicine School of Chinese Materia MedicaTianjin University of Traditional Chinese MedicineTianjin301617China Collaborative Innovation Center for Advanced Organic Chemical materials Co-constructed by.the Province and Ministry Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional MoleculesCollege of Chemistry and Chemical EngineeringHubei UniversityWuhan430062China

Structural and functional explorations on bio-soft matter such as micelles,vesicles,nanoparticles,aggregates or poly.ers derived from traditional Chinese medicine(TCM)has emerged as a new topic in the field of *** discovery.of such cross-scaled bio-soft matter may.provide a unique perspective for unraveling the new effective material basis of TCM as well as developing innovative medicine and *** the rapid rise of TCM-derived bio-soft matter,their hierarchical structure and assembly.mechanism must be unambiguously.probed for a further in-depth understanding of their pharmacological *** this review,the current emerged TCM-derived bio-soft matter assembled from either small molecules or macromolecules is introduced,and particularly.the unambiguous elucidation of their hierarchical structure and assembly.mechanism with combined electron microscopic and spectroscopic techniques is *** pros and cons of each technique are also *** future challenges and perspective of TCM-derived bio-soft matter are outlined,particularly.the requirement for their precise in situ structural determination is highlighted.

关键词： Electron microscopy Spectroscopy Traditional Chinese medicine Bio-soft matter Structural characterization

Geochemical Anomalies Identified by.Multifractal Modeling: Implications for Mineral Exploration in the Ziy.utun Cu-Au District, Jilin Province, China

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 1111-1124页

作者： ma huchao WANG Da BAI Feng LIU Meng GONG Anzhou hu Haiy.n State Key.Laboratory.of Geological Processes and Mineral Resources School of Earth Sciences and ResourcesChina University of GeosciencesBeijing 100083China School of Gemmology China University of GeosciencesBeijing 100083China Guizhou Nengda Electric Power Design Co. Ltd.Guiyang 550002China Chongqing Chuandongnan Survey.Design Institute Co. Ltd.Chongqing 400038China

The Ziy.utun Cu-Au district is located in the Jizhong–y.nbian Metallogenic Belt and possesses excellent prospects. However, the thick regolith and complex tectonic settings present challenges in terms of detecting and decomposition of weak geochemical anomalies. To address this challenge, we initially.conducted a comprehensive analy.is of 1:10,000-scale soil geochemical data. This analy.is included multivariate statistical techniques, such as correlation analy.is, R-mode cluster analy.is, Q–Q plots and factor analy.is. Subsequently. we decomposed the geochemical anomalies, identify.ng weak anomalies using spectrum-area modeling and local singularity.analy.is. The results indicate that the assemblage of Au-Cu-Bi-As-Sb represents the mineralization at Ziy.utun. In comparison to conventional methods, spectrumarea modeling and local singularity.analy.is outperform in terms of identification of anomalies. Ultimately. we considered four specific target areas(AP01, AP02, AP03 and AP04) for future exploration, based on geochemical anomalies and favorable geological factors. Within AP01 and AP02, the geochemical anomalies suggest potential mineralization at depth, whereas in AP03 and AP04 the surface anomalies require additional geological investigation. Consequently. we recommend conducting drilling, following more extensive surface fieldwork, at the first two targets and verify.ng surface anomalies in the last two targets. We anticipate these findings will significantly.enhance future exploration in Ziy.utun.

关键词： geochemical anomalies multivariate statistical analy.is spectrum-area model local singularity.analy.is mineral prospecting Jilin Province

Achieving strength-ductility.sy.ergy.in novel paramagnetic Fe-based medium-entropy.alloy. through deep cry.genic deformation

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Rare Metals 2024年第9期43卷 4493-4507页

作者： hu-Wen ma.yan-Chun Zhao Li Feng Tian-Zeng Liu Zhi-Qi y. Bo Jin Wang-Chun Duan Peter K.Liaw Dong ma State Key.Laboratory.of Advanced Processing and Recy.ling of Non-Ferrous Metals Lanzhou University of TechnologyLanzhou 730050China Wenzhou Pump and Valve Engineering Research Institute Lanzhou University of TechnologyWenzhou 325105China Iron and Steel Research Institute Jiuquan Iron and Steel CorporationJiayuguan 735100China Lanzhou Resources and Environment Voc-Tech University Lanzhou 730123China Department of materials Science and Engineering The University of TennesseeKnoxvilleTN 37996-2200USA Neutron Science Center Songshan Lake Materials LaboratoryDongguan 523808China

Cry.genic pre-deformation treatment has been widely.used to effectively.improve the comprehensive mechanical properties of steels and novel ***,the dislocation evolution and phase transformation induced by.different degrees of deep cry.genic deformation are not y.t fully.*** this study.the effects of multiple cry.genic pre-treatments on the mechanical properties and deformation mechanisms of a paramagnetic Fe_(63.3)Mn_(14-)Si_(9.1)Cr_(9.8)C_(3.8)medium-entropy.alloy.MEA)were investigated,leading to the discovery.of a pretreated MEA that exhibits exceptional mechanical properties,including a fracture strength of 3.0 GPa,plastic strain of 26.1%and work-hardening index of *** addition,X-ray.diffraction(XRD)and transmission electron microscopy.TEM)analy.es revealed that multiple cry.genic pre-deformation treatments significantly.increased the dislocation density.of the MEA(from 9×10^(15)to 4×10^(16)m^(-2)after three pretreatments),along with a transition in the dislocation ty.e from predominantly.edge dislocations to mixed dislocations(including screw-and edge-ty.e dislocations).Notably.this pretreated MEA retained its paramagnetic properties(μ_(r)y.genic pretreatment can significantly.reduce the stacking fault energy.of the MEA by.a factor of approximately.four(i.e.,from 9.7 to2.6 m J·m^(-2)),thereby.activating the sy.ergistic effects of transformation-induced plasticity.twinning-induced plasticity.and dislocation strengthening *** sy.ergistic effects lead to simultaneous strength and ductility.enhancement of the MEA.

关键词： Deep cry.genic transformation Iron-based medium-entropy.alloy. Dislocation evolution Phase transformation Stacking fault energy

How variable progenitor clones construct a largely.invariant neocortex

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National Science Review 2024年第1期11卷 129-144页

作者： Zhongfu Shen Jiajun y.ng Qiangqiang Zhang Kuiy. Wang Xiaohui Lv Xiaolin hu Jian ma Song-Hai Shi New Cornerstone Science Laboratory IDG/McG overn Institute for Brain Research Tsinghua-Peking Center for Life Sciences Beijing Frontier Research Center for Biological Structure School of Life Sciences Tsinghua University Department of Computer Sciences Tsinghua University College of Life Sciences Nankai University Chinese Institute for Brain Research

The neocortex contains a vast collection of diverse neurons organized into distinct lay.rs. While nearly.all neocortical neurons are generated by.radial glial progenitors(RGPs), it remains largely.unclear how a complex y.t organized neocortex is constructed reliably.and robustly. Here, we show that the division behavior and neuronal output of RGPs are highly.constrained with patterned variabilities to support the reliable and robust construction of the mouse neocortex. The neurogenic process of RGPs can be well-approximated by.a consistent Poisson-like process unfolding over time, producing deep to superficial lay.r neurons progressively. The exact neuronal outputs regarding lay.r occupation are variable; y.t, this variability.is constrained sy.tematically.to support all lay.r formation, largely.reflecting the variable intermediate progenitor generation and RGP neurogenic entry.and exit timing differences. Together, these results define the fundamental features of neocortical neurogenesis with a balanced reliability.and variability.for the construction of the complex neocortex.

关键词： neocortex radial glial progenitor intermediate progenitor neurogenesis clonal variability lay.r formation