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Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： Jia Zhao Taixi feng Guimin Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang feng Gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

NIR photothermal enhancement to achieve high-efficiency nitrogen reduction to ammonia by polyoxometalates@Fe-polydopamine

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Nano Research 2025年第1期18卷 118-128页

作者： Xiaofei Chen Lixin Wu feng Bai Key Laboratory for Special Functional Materials of Ministry of Education National&Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologySchool of Nanoscience and Materials EngineeringHenan UniversityKaifeng 475004China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China

The development of atmospheric pressure N_(2)reduction to NH_(3)is attracting much attention in green chemistry,yet it is still a challenge to obtain satisfactory activity under mild ***,an efficient near-infrared(NIR)photothermal catalysis reduction of N_(2)constitutes an occurrence is *** or without V-substitute polyoxometalates(POMs)loaded on the surface of Fechelated polydopamine(Fe-PDA)photothermal support through the electrostatic interactions,NIR photothermal catalysts POMs@Fe-PDA are *** induction of“FeV”cofactor facilitates electron transfer between V(V)/V(IV)&Fe(III)/Fe(II)and N_(2),thereby activating N_(2)*** synergy between the catalytic activity of V-POMs and the local NIR photothermal effect of Fe-PDA dramatically enhances N_(2)***,PMo_(10)V_(2)@Fe-PDA exhibits a significantly enhanced NH_(3)production rate of 181.1μmol·LN^(-1)with a turnover frequency of 1006.1 mmol·MN^(-1)·hN^(-1)under 808 nm NIR laser radiation,being the highest values reported at atmospheric *** expect that this work could provide an alternative approach for photothermal catalysis N_(2)reduction under mild conditions.

关键词： polyoxometalate near-infrared photothermal catalysis N_(2)reduction mild condition

Searching for new drugs to treat Alzheimer’s disease dementia through multiple pathways

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World Journal of Clinical Cases 2025年第1期13卷 22-28页

作者： Hua Bai Xiao-feng feng Department of Neurology The Third Affiliated Hospital of Guizhou Medical UniversityDuyun 558099Guizhou ProvinceChina Department of Neurology Wulong Branch of the People's Hospital Affiliated to Chongqing UniversityWulong 408500ChongqingChina Department of Neurology Guizhou Medical UniversityGuiyang 550004Guizhou ProvinceChina

Dementia is a group of diseases,including Alzheimer's disease(AD),vascular dementia,Lewy body dementia,frontotemporal dementia,Parkinson's disease dementia,metabolic dementia and toxic *** treatment of dementia mainly includes symptomatic treatment by controlling the primary disease and accompanying symptoms,nutritional support therapy for repairing nerve cells,psychological auxiliary treatment,and treatment that improves cognitive function through *** them,drug therapy to improve cognitive function is *** review focuses on introducing and commenting on some recent progress in exploring drugs to improve cognitive function,especially the new progress in drug treatment for *** mainly discuss the opportunities and challenges in finding and developing new therapeutic drugs from the aspects of acetylcholinesterase,N-methyl-D-aspartate glutamate receptor,amyloid protein,tau protein and chronic immune inflammation.

关键词： Alzheimer's disease Dementia Cholinesterase inhibitor Beta amyloid Tau protein

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新生牛跟腱胶原蛋白海绵与细胞的生物相容性

中国组织工程研究与临床康复 2007年第1期11卷 70-73页

作者：冯玉萍马忠仁乔自林李明生冯若飞周雪雁侯兰新李倬西北民族大学生命科学与工程学院生物工程国家民委重点实验室甘肃省兰州市730030

目的:采用新生牛跟腱制备生物医用胶原蛋白海绵,通过分别接种Vero细胞、天祝白牦牛胚胎皮肤原代细胞和岷县黑紫羔羊睾丸原代细胞至胶原蛋白海绵组织支架上,观察新生牛跟腱胶原蛋白海绵与3种细胞的生物相容性。方法:实验于2006-02/05在... 详细信息

目的:采用新生牛跟腱制备生物医用胶原蛋白海绵,通过分别接种Vero细胞、天祝白牦牛胚胎皮肤原代细胞和岷县黑紫羔羊睾丸原代细胞至胶原蛋白海绵组织支架上,观察新生牛跟腱胶原蛋白海绵与3种细胞的生物相容性。方法:实验于2006-02/05在西北民族大学生命科学与工程学院生物工程与技术国家民委重点实验室完成。①用新生牛跟腱经冰醋酸、胃蛋白酶等消化,经盐析、透析及冻干等处理后,制备成胶原蛋白海绵。②在六孔板中,将Vero细胞、天祝白牦牛胚胎皮肤原代细胞和岷县黑紫羔羊睾丸原代细胞分别接种于经紫外线、臭氧灭菌后的胶原蛋白海绵上,经37℃体积分数为0.05的CO2恒温培养;并用另一组细胞在凯氏瓶中培养作对照实验。用奥林帕斯倒置相差显微镜及JVC摄像系统观察、拍摄与记录细胞生长情况,并于培养11d,用考马斯亮蓝和苏木精-伊红染色,证实相差显微镜观察的结果。结果:①胶原蛋白海绵制备结果:用新生牛跟腱制备得到具有一定孔隙度的胶原蛋白海绵,经紫外线、臭氧灭菌后可进行细胞培养。②3种细胞在胶原蛋白海绵上和六孔板底的生长情况:3种细胞接种后5h,在胶原蛋白海绵周围的六孔板孔底可看到Vero细胞已贴壁、伸展,个别细胞有分裂现象,在胶原蛋白海绵表面,隐约可见圆形细胞排列。Vero细胞和天祝白牦牛胚胎皮肤原代f2细胞接种72h、岷县黑裘皮羔羊睾丸原代f2细胞接种48h时,孔底细胞已经铺满单层,但与对照孔比较,生长速度较慢。②3种细胞用考马斯亮蓝细胞骨架染色和苏木精-伊红染色的结果:培养到第11天,3种来自不同动物、不同组织的细胞接种的胶原蛋白海绵支架孔中均有大量细胞良好生长,胶原海绵外观变得挺拔、透明、有韧性。结论:新生牛跟腱胶原蛋白海绵,对Vero细胞、天祝白牦牛胚胎皮肤原代细胞和岷县黑紫羔羊睾丸原代细胞无毒性,3种细胞均能在其上良好生长,但在体内是否会引起免疫排斥反应,还有待进一步研究。新生牛跟腱有望成为医用胶原蛋白海绵产品新的原材料。

关键词：牛跟腱胶原细胞培养生物相容性材料

新生牛皮胶原蛋白海绵的制备及其体外细胞相容性

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中国组织工程研究与临床康复 2007年第26期11卷 5147-5150页

作者：马忠仁冯玉萍李明生冯若飞乔自林李琼毅侯兰新李倬西北民族大学生命科学与工程学院生物工程国家民委重点实验室甘肃省兰州市730030

目的:采用新生牛皮提取胶原蛋白、制备生物医用胶原蛋白海绵,观察其生物学活性与细胞相容性。方法:实验于2006-05/2007-02在西北民族大学生命科学与工程学院生物工程与技术国家民委重点实验室完成。实验方法:①取出生24h内宰杀的新生尕... 详细信息

目的:采用新生牛皮提取胶原蛋白、制备生物医用胶原蛋白海绵,观察其生物学活性与细胞相容性。方法:实验于2006-05/2007-02在西北民族大学生命科学与工程学院生物工程与技术国家民委重点实验室完成。实验方法:①取出生24h内宰杀的新生尕里巴牛犊皮制备胶原蛋白海绵。②将新生牛皮胶原蛋白海绵与黑裘皮羔羊肾F3代成纤维细胞混悬液共培养,分别设胶原海绵材料组、阴性对照组(生理盐水)、阳性对照组(橡胶塞浸提液)。实验评估:①应用倒置相差显微镜观察细胞形态。②培养20,35d对细胞与胶原蛋白海绵共培养物进行AO染色观察细胞在胶原海绵中的增殖情况。③培养65d后制石蜡切片,行苏木精-伊红染色观察细胞在胶原海绵中的生长情况。结果:①细胞形态观察结果:阳性对照组细胞培养24h细胞圆缩,不贴壁,3d后全部死亡。胶原海绵材料组与阴性对照组细胞形态均正常,细胞贴壁生长良好。随着培养时间的延长,海绵孔隙逐渐变小,细胞数量增加,形态变小,海绵外观从柔软、混浊变得挺拔、透明。②细胞在胶原海绵中的增殖情况:吖啶橙-AO染色显示培养20,35d胶原海绵-羔羊肾成纤维细胞共培养物中有大量细胞存在,并且在胶原蛋白空隙中有大量细胞成团簇状生长。③细胞在胶原海绵中的生长情况:苏木精-伊红染色显示有大量蓝色细胞核和新生的红色胶原纤维。结论:制备的新生牛皮胶原蛋白海绵对岷县黑裘皮羔羊肾成纤维细胞有良好的生物相容性,无细胞毒性。

关键词：新生牛皮胶原蛋白海绵黑裘皮羔羊肾细胞生物相容性

Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： feng Zhang Chenyang Zhang Linlin Wu Wei Sun Hongliang Zhang Jianhua Chen Yong Pei Songjiang Li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Laboratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

Ru doping triggering reconstruction of cobalt phosphide for coupling glycerol electrooxidation with seawater electrolysis

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Journal of Energy Chemistry 2025年第1期100卷 317-326页

作者： Binglu Deng Jie Shen Jinxing Lu Chuqiang Huang Zhuoyuan Chen feng Peng Yunpeng Liu School of Materials Science and Hydrogen Energy Foshan University School of Chemistry and Chemical Engineering Guangzhou University Guangdong Key Laboratory for Hydrogen Energy Technologies

Seawater electrolysis is a promising approach for sustainable energy without relying on precious ***,the large-scale seawater electrolysis is hindered by low catalytic efficiency and severe anode corrosion caused by the harmful *** contrast to the oxygen evolution reaction （OER）and chlorin ion oxidation reaction （ClOR）,glycerol oxidation reaction （GOR） is more thermodynamically and kinetically favorable ***,a Ru doping cobalt phosphide （Ru-CoP2） is proposed as a robust bifunctional electrocatalyst for seawater electrolysis and GOR,for the concurrent productions of hydrogen and value-added *** in situ and ex situ characterization analyses demonstrated that Ru doping featured in the dynamic reconstruction process from Ru-CoP2to Ru-CoOOH,accounting for the superior GOR *** coupling GOR with hydrogen evolution was realized by employing Ru-CoP2as both anode and cathode,requiring only a low voltage of 1.43 V at 100 mA cm-2,which was 250 m V lower than that in alkaline *** work guides the design of bifunctional electrocatalysts for energy-efficient seawater electrolysis coupled with biomass resource upcycling.

关键词： Glycerol electrooxidation Hydrogen evolution Ru doping Cobalt phosphide Bifunctional electrocatalysts

Copper homeostasis and neurodegenerative diseases

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Neural Regeneration Research 2025年第11期20卷 3124-3143页

作者： Yuanyuan Wang Daidi Li Kaifei Xu Guoqing Wang feng Zhang International Research Laboratory of Ethnomedicine of Ministry of Education Key Laboratory of Basic Pharmacology of Ministry of EducationLaboratory Animal Center and Key Laboratory of Basic Pharmacology of Guizhou ProvinceZunyi Medical UniversityZunyiGuizhou ProvinceChina

Copper,one of the most prolific transition metals in the body,is required for normal brain physiological activity and allows various functions to work normally through its range of *** homeostasis is meticulously maintained through a complex network of copper-dependent proteins,including copper transporters(CTR1 and CTR2),the two copper ion transporters the Cu-transporting ATPase 1(ATP7A)and Cu-transporting beta(ATP7B),and the three copper chaperones ATOX1,CCS,and *** in copper homeostasis can lead to either the deficiency or accumulation of copper in brain *** evidence suggests that abnormal copper metabolism or copper binding to various proteins,including ceruloplasmin and metallothionein,is involved in the pathogenesis of neurodegenerative ***,the exact mechanisms underlying these processes are not *** is a potent oxidant that increases reactive oxygen species production and promotes oxidative *** reactive oxygen species levels may further compromise mitochondrial integrity and cause mitochondrial *** oxygen species serve as key signaling molecules in copper-induced neuroinflammation,with elevated levels activating several critical inflammatory ***,copper can bind aberrantly to several neuronal proteins,including alphasynuclein,tau,superoxide dismutase 1,and huntingtin,thereby inducing neurotoxicity and ultimately cell *** study focuses on the latest literature evaluating the role of copper in neurodegenerative diseases,with a particular focus on copper-containing metalloenzymes and copper-binding proteins in the regulation of copper homeostasis and their involvement in neurodegenerative disease *** synthesizing the current findings on the functions of copper in oxidative stress,neuroinflammation,mitochondrial dysfunction,and protein misfolding,we aim to elucidate the mechanisms by which copper contributes to a wide range of heredit

关键词： Alzheimer's disease amyotrophic lateral sclerosis disease copper homeostasis copper toxicity Huntington's disease Menkes'disease multiple sclerosis neurodegenerative disease Parkinson's disease Wilson's disease