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Journal of Materials Science & Technology 2024年第6期173卷 72-79页

作者： l.J.huang h.Wang l.Z.Ouyang M.Zhu h.J.lin School of Materials Science and Engineering Key Laboratory of Advanced Energy Storage Materials of Guangdong ProvinceSouth China University of TechnologyGuangzhou 510641China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China

Mg-based amorphous alloys are one of the potential hydrogen storage materials but suffer from sluggish dehydrogenation/hydrogenation(de/hydrogenation)*** this work,as a new strategy,a hydrogen pump is built on the surface of amorphous alloys to solve this *** milling crystalline YFe_(2-x)Al_(x) hydrogen storage alloy with Mg_(60)la_(1.)Ni_(20)Cu_(1.) amorphous alloy,fine crystalline particles were seeded on amorphous alloy powder to form a“strawberry”*** to the TEM observation,a metallurgical bonding boundary formed between the Mg-based amorphous matrix and the Y-Fe-Al crystalline *** microstructure and de/hydrogenation kinetics investigation,the“hydrogen pump”effect of the seeded crystalline alloy was confirmed,which makes it much easier for the hydrogen to dissociate on and diffuse through the surface of the Mg-based amorphous *** such effect,the h absorption rate of Mg_(60)la_(1.)Ni_(20)Cu_(1.) amorphous alloy became almost eight times faster and it absorbs ~2.8 wt.% in 1.h at 1.0℃ under 4.5 MPa-h_(2).Further,fast hydrogenation can even achieve at 70℃ and the low-temperature dehydrogenation kinetics of the amorphous hydride can be also greatly *** present work proves that surface modification is of great importance for obtaining Mg-based amorphous alloy with ideal hydrogen storage performance.

关键词： hydrogen storage Mg-based amorphous alloy hydrogen pump Composite structure

On an isotropic porous solid cylinder:the analytical solution and sensitivity analysis of the pressure

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Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1499-1522页

作者： h.ASGhARI l.MIllER R.PENTA J.MERODIO Departamento de Matematica Aplicada a las TIC ETS de Ingenieria de Sistemas InformaticosUniversidad Politecnica de MadridMadrid 28031Spain School of Mathematics and Statistics University of GlasgowGlasgow G128QQU.K.

Within this work,we perform a sensitivity analysis to determine the influence of the material input parameters on the pressure in an isotropic porous solid *** provide a step-by-step guide to obtain the analytical solution for a porous isotropic elastic cylinder in terms of the pressure,stresses,and elastic *** obtain the solution by performing a laplace transform on the governing equations,which are those of Biot's poroelasticity in cylindrical polar *** enforce radial boundary conditions and obtain the solution in the laplace transformed domain before reverting back to the time *** sensitivity analysis is then carried out,considering only the derived pressure *** analysis finds that the time t,Biot's modulus M,and Poisson's ratio ν have the highest influence on the pressure whereas the initial value of pressure P_(0) plays a very little role.

关键词： sensitivity analysis laplace transform cylindrical polar coordinate Biot's modulus cylinder

In situ TEM investigation of electron irradiation and aging-induced high-density nanoprecipitates in an Mg-1.Gd-3Y-1.n-0.5Zr alloy

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Journal of Magnesium and Alloys 2024年第5期12卷 1841-1853页

作者： M.lv h.l.Ge Q.Q.Jin X.h.Shao Y.T.Zhou B.Zhang X.l.Ma Shenyang National laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Materials Science and Engineering Research Center Guangxi University of Science and TechnologyLiuzhou 545006China

In-situ electron irradiation and aging are applied to introduce high-density precipitates in an Mg-1.Gd-3Y-1.n-0.5Zr(GWZ1.31.,wt.%)alloy to improve the *** results show that the hardness of the Mg alloy after irradiation for 1. h and aging for 9 h at 250℃ is 1.64 GPa,which is approximately 64% higher than that of the samples before being *** is mainly attributed to γ'precipitates on the basal plane after irradiation and the high-density nanoscale β'precipitates on the prismatic plane after aging,which should be closely related to the irradiation-induced homogenous *** latter plays a key role in precipitation *** result paves a way to improve the mechanical properties of metallic materials by tailoring the precipitation through irradiation and aging.

关键词： Mg alloy Electron beam irradiation hardening Precipitates In-situ TEM

Implications for brainstem recovery from studies in primates after sensory loss from arm

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Neural Regeneration Research 2024年第3期19卷 479-480页

作者： Jamie l.Reed hui-Xin Qi Jon h.Kaas Department of Psych.l.gy Vanderbilt UniversityNashvilleTNUSA

For decades,researchers have known that when neurons lose their activating inputs,they can atrophy and even *** example,removing sensory nerve inputs from the arm to the spinal cord after amputation or cutting the spinal nerves can shrink the post-synaptic target zones(e.g.,Woods et al.,2000).From touch receptors for the hand and arm,primary nerve afferents enter the spinal cord,and axons travel in the dorsal columns to target the cuneate nucleus(Cu)of the brainstem on the same side of the body(Figure 1..When sensory loss is unilateral,the overwh.l.ing result is for the associated primary target zone to shrink in total size(cross-sectional area),as compared to the size of the opposite side.

关键词： brainstem shrink removing

Discovery of new MAX-phase-like layered ternary carbide V_(8)P_(6)C:Crystal structure,thermal expansion,and elastic properties

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Journal of Materials Science & Technology 2024年第7期174卷 55-62页

作者： h.X.Chen l.Sheng Z.l.Zhang X.C.Wen D.l.Yang X.Y.Ye P.Q.Dai School of Materials Science and Engineering Fujian University of TechnologyFuzhou 350118China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of ScienceBeijing 100049China Fujian Provincial Key laboratory of Advanced Materials Processing and Application Fuzhou 350118China State Key laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

Due to the laminated structure,MAX phases and MAX-phase-like compounds possess outstanding dam-age tolerance capability with good thermal/electrical conductivity and other charming functional prop-erties,showing a bright future for structural-functional ***,a new MAX-phase-like ternary car-bide V_(8)P_(6)C with.l.yered characteristics was *** to the alternate stacking of hexagonal-arranged M/A/X atom layers in MAX phases,V_(8)P_(6)C has a layered structure formed by a repeated stacking of the slabs consisting of V_(6)C-octahedrons and VP 6-distorted-octahedrons in three-atomic layers *** thermal expansion anisotropy was revealed,with the thermal expansion coefficients(TECs)along a-axis,c-axis,and the average value,equal toα_(a)=8.55(5)μK^(−1.,α_(c)=1..23(5)μK^(−1.,andα_(l)=9.1.(5)μK^(−1.,*** dilation along the c-axis was mainly dominated by out-plane V-P bonds be-tween layered *** to the pressure-dependent lattice parameters,the polycrystalline bulk modulus(B_(0)=1.5(9)GPa)and high compressibility anisotropy factor(B_(a)/B_(c)=1.64)was ***-wh.l.,the second-order elastic constants were calculated,and the elastic moduli,E=303 GPa,B=1.8 GPa,G=1.2 GPa,andν=0.246,were *** the weak connection between layer slabs by out-plane V1.P bond was revealed by the bond stiffness model,with a bond stiffness close to the M-A bond in MAX ***,good damage tolerance capability was predicted according to Paugh’s ratio(G/B=0.61.)and Cauchy pressure(P_(a)=0 GPa,P_(c)=-7.5 GPa),even better than those of typical MAX *** discovery of V_(8)P_(6)C provides a new member of MAX-phase-like damage-tolerant ceramic with relatively low density,moderate thermal expansion,and anisotropic compressibility,and the unique lay-ered structure is inspiring for exploring new layered ternary ceramics.

关键词： New ternary carbide MAX phase Thermal expansion Elastic constants Anisotropy

Efficient guiding and focusing of intense laser pulse using periodic thin slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： l.Xu T.W.huang K.Jiang C.N.Wu h.Peng P.C.hen R.li h.B.Zhuo C.T.Zhou Shenzhen Key laboratory of Ultraintense laser and Advanced Material Technology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits have been widely used in laser-plasma interactions as plasma optical components for generating high-harmonic light and controlling laser-driven particle ***,we propose and demonstrate that periodic thin slits can be regarded as a new breed of optical elements for efficient focusing and guiding of intense laser *** fundamental physics of intense laser interaction with thin slits is studied,and it is revealed that relativistic effects can lead to enhanced laser focusing far beyond the pure diffractive focusing *** addition,the interaction of an intense laser pulse with periodic thin slits makes it feasible to achieve multifold enhancement in both.l.ser intensity and energy transfer efficiency compared with conventional *** results provide a novel method for manipulating ultra-intense laser pulses and should be of interest for many laser-based applications.

关键词： laser pulse intense

Precipitation of multi-type nano-quasicrystals in a Mg-Zn-Y alloy

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Journal of Magnesium and Alloys 2024年第3期12卷 997-1008页

作者： W.Z.Wang X.Z.Zhou l.F.Zhang h.Q.Ye Z.Q.Yang Shenyang National laboratory for Materials Science Institute of Metal ResearchChinese Academy of ScienceShenyang 110016China Ji hua laboratory Foshan 528251China Foshan University Foshan 528231China

Mg-6Zn-1.(at.%)ribbons with strengthening precipitates of multi-type nanoquasicrystals were prepared by melt-spinning followed by aging *** evolution of the rapidly solidified ribbons during isothermal aging was comprehensively studied using various electron microscopy *** new kinds of decagonal quasicrystals were formed in aged ribbons,in addition to precipitation of nanometer icosahedral ***-resolution observations reveal that both decagonal quasicrystals can be modeled by quasiperiodic tiling with decagonal clusters of 2.5 nm in diameter,but overlap of neighboring clusters in both decagonal quasicrystals is different from the Gummelt model observed in other quasicrystals.A sh.l. composed of complex laves Mg-Zn domains was formed surrounding each decagonal quasicrystal precipitate upon prolonged *** addition,all kinds of nanoprecipitates exhibit excellent structure and size stability at 573 *** findings may have implications for not only fundamental studies about quasicrystals,but also microstructural manipulation of high-performance Mg alloys.

关键词： Quasicrystal Mg alloys Rapid solidification Scanning-transmission electron microscopy.

宰后秦川牛肉成熟过程中BCl-2调控线粒体中Ca变化对细胞凋亡及肉保水性的影响

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食品科学 2024年

作者：刘长玲高爽马佳荣李亚蕾罗瑞明曹松敏 1.宁夏大学食品科学与工程学院 2.宁夏大学动物科技学院宁夏大学动物科技学院宁夏大学食品科学与工程学院

为研究宰后秦川牛肉成熟过程中B细胞淋巴瘤2蛋白（B-celllymphomaprotein2，Bcl-2）调控线粒体中Ca2+变化对细胞凋亡及肉保水性的影响。用200μmol/l甘氨鹅脱氧胆酸溶液（Glycochenodeoxych.l.cacid，GCDA）和1.μmol/lABT-737溶液注射处理秦川牛背最长肌，测定并分析在4℃条件下成熟0、6、1.、24、48、72、1.0h时，Bcl-2 含量、BCl2关联X蛋白（BCl2-associatedXprotein，Bax）含量及Bax/Bcl-2水平、内质网和线粒体钙离子浓度变化、电压依赖性阴离子通道蛋白1.Voltage-dependentanionchannelprotein1.VDAC1.表达量、钙蛋白酶含量、以及线粒体细胞凋亡途径和保水性等相关指标变化情况。结果表明：在宰后6h，GCDA处理组和ABT-737处理组的Bcl-2含量都极显著大于空白对照组（P＜0.01.，GCDA处理组和ABT-737处理组的Bax/Bcl-2水平和VDAC1.表达量都极显著低于空白对照组（P＜0.01.，GCDA处理组的蒸煮损失率显著低于空白对照组（P＜0.05），ABT-737处理组的蒸煮损失率极显著低于空白对照组（P＜0.01.，GCDA处理组的ph高于空白对照组，ABT-737处理组的ph显著高于空白对照组（P＜0.05）；在宰后1.0h，GCDA处理组和ABT-737处理组的Bcl-2的含量相对于空白对照组分别下降了66.29％和7.52％，GCDA处理组Bax含量相对于对照组提高了24.05％，ABT-737处理组Bax含量相对于对照组下降了1..73％，GCDA处理组的Bax/Bcl-2水平相对于空白对照组极显著上升（P＜0.01.，GCDA处理组和ABT-737处理组的VDAC1.表达量都极显著低于空白对照组（P＜0.01.，ABT-737处理组的内质网钙离子浓度极显著大于对照组（P＜0.01.，GCDA处理组和ABT-737处理组的线粒体钙离子浓度极显著高于空白对照组（P＜0.01.，GCDA处理组和ABT-737处理组的牛钙蛋白酶含量相对于对照组分别提高了67.23％和22.36％，GCDA处理组和ABT-737处理组的Caspase-9的含量相对于空白对照组分别提高了71.82％和61.93％，GCDA处理组的Caspase-3的含量相对于空白对照组增加了68.40％，而ABT-737处理组的Caspase-3的含量显著低于空白对照组（P＜0.05）；在宰后0～1.0h，GCDA处理组和ABT-737处理组的MFI基本显著高于空白对照组（P＜0.05）。综上，秦川牛宰后成熟过程中，宰后ph的呈显著下降变化，为宰后细胞凋亡的发生提供有利环境条件，Bcl-2可以导致VDAC1.分关闭，进而抑制线粒体Ca2+的摄入，Ca2+信号进入细胞后，能够刺激线粒体膜间隙的钙蛋白酶活化，当线粒体内Ca2+超载会促使Caspase-9被激活，再激活下游的Caspase-3，从而诱导细胞凋亡，细胞凋亡和Caspase 激活程度越高，细胞骨架肌原纤维蛋白降解越多，持水能力就越差，肉品保水性就越低。因此得出通过处理Bcl-2来调控线粒体内源性途径中对钙离子的影响，进而研究细胞凋亡和肉的保水性的影响。

关键词： Bcl-2 宰后成熟秦川牛背最长肌细胞凋亡 Ca 肉的保水性

Satellite-enabled enviromics to enhance crop improvement

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Molecular Plant 2024年第6期17卷 848-866页

作者： Rafael T.Resende lee hickey Cibele h.Amaral lucas l.Peixoto Gustavo E.Marcatti Yunbi Xu Universidade Federal de Goia´s(UFG) Agronomy DepartmentPlant Breeding SectorGoiania(GO)74690-900Brazil TheCROP a Precision-Breeding Startup:EnviromicsPhenomicsand GenomicsNo Zip-codeOperating VirtuallyGoiania(GO)and Sete Lagoas(MG)Brazil Queensland Alliance for Agriculture and Food Innovation The University of QueenslandBrisbaneQLDAustralia Earth.l.b Cooperative Institute for Research in Environmental SciencesUniversity of Colorado BoulderBoulderCO 80303USA Environmental Data Science Innovation&Inclusion lab Cooperative Institute for Research in Environmental SciencesUniversity of Colorado BoulderBoulderCO 80303USA Universidade Federal de Sa˜o Joa˜o del-Rei Forest Engineering DepartmentCampus Sete LagoasSete Lagoas(MG)35701-970Brazil Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Peking University Institute of Advanced Agricultural Sciences WeifangShandong 261325China BGI Bioverse Shenzhen 518083China

Enviromics refers to the characterization of micro-and macroenvironments based on large-scale environmental *** providing genotypic recommendations with predictive extrapolation at a site-specific level,enviromics could inform plant breeding decisions across varying conditions and anticipate productivity in a changing ***-based integration of statistics,envirotyping(i.e.,determining environmental factors),and remote sensing could h.l. unravel the complex interplay of genetics,environment,and *** support this goal,exhaustive envirotyping to generate precise environmental profiles would significantly improve predictions of genotype performance and genetic gain in ***,informatics management platforms aggregate diverse environmental datasets obtained using optical,thermal,radar,and light detection and ranging(liDAR)sensors that capture detailed information about vegetation,surface structure,and *** wealth of information,coupled with freely available climate data,fuels innovative enviromics *** enviromics h.l.s immense potential for breeding,a few obstacles remain,such as the need for(1.integrative methodologies to systematically collect field data to scale and expand observations across the landscape with satellite data;(2)state-of-the-art AI models for data integration,simulation,and prediction;(3)cyberinfrastructure for processing big data across scales and providing seamless interfaces to deliver forecasts to stakeh.l.ers;and(4)collaboration and data sharing among farmers,breeders,physiologists,geoinformatics experts,and programmers across research *** these ch.l.enges is essential for leveraging the full potential of big data captured by satellites to transform 21.t century agriculture and crop improvement through enviromics.

关键词： envirotyping precision breeding genotype-environment interactions remote sensing predictive models enviromic information

Disparate outcomes in hispanic patients with metabolic dysfunctionassociated steatotic liver disease/steatohepatitis and type 2 diabetes: large cohort study

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World Journal of Diabetes 2024年第5期15卷 886-897页

作者： Joseph Matthew Gosnell George Golovko Esteban Arroyave Akshata Moghe Michael l Kueht Omar AbdulSaldarriaga Kevin h McKinney heather l Stevenson Monique R Ferguson Department of Path.l.gy University of Texas Medical BranchGalvestonTX 77555United States Department of Pharmacology&Toxicology University of Texas Medical BranchGalvestonTX 77555United States Department of Medicine University of Texas Health Science Center at HoustonHoustonTX 77030United States Department of Surgery University of Texas Medical BranchGalvestonTX 77555United States Center for Tropical Diseases Department of Internal MedicineUniversity of Texas Medical BranchGalvestonTX 77555United States Department of Internal Medicine University of Texas Medical BranchGalvestonTX 77555United States

BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASlD)and metabolic dysfunction-associated steatohepatitis(MASh)are a growing health burden across a significant portion of the global patient ***,these conditions seem to have disparate rates and outcomes between different ethnic *** combination of MASlD/MASh and type 2 diabetes increases the risk of hepatocellular carcinoma(hCC),and hispanic patients experience the greatest burden,particularly those in South *** To compare outcomes between hispanic and non-hispanic patients in the United States,wh.l. further focusing on the hispanic population within Southeast Texas to determine whether the documented disparity in outcomes is a function of geographical circumstance or if there is a more widespread reason that all clinicians must account for in prognostic *** This cohort analysis was conducted with data obtained from TriNetX,llC(“TriNetX”),a global federated health research network that provides access to deidentified medical records from healthcare organizations *** cohort networks were used:University of Texas Medical Branch(UTMB)hospital and the United States national database collective to determine whether disparities were related to geographic regions,like Southeast *** This study findings revealed hispanics/latinos have a statistically significant higher occurrence of hCC,type 2 diabetes mellitus,and liver fibrosis/cirrhosis in both the United States and the UTMB hispanic/latino *** mortality in hispanics/latinos was lower within the United States group and not statistically elevated in the UTMB *** This would appear to support that hispanic patients in Southeast Texas are not uniquely affected compared to the national hispanic population.

关键词： Metabolic dysfunction-associated steatotic liver disease Metabolic dysfunction-associated steatohepatitis hispanic Diabetes mellitus TriNetX Non-alcoh.l.c fatty liver disease Non-alcoh.l.c steatohepatitis Steatotic liver disease hepatocellular carcinoma