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journal of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： h.T.jeong S.W.Lee W.j.Kim Department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

The superplastic behavior and associated deformation mechanisms of a fine-grained Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)with a grain size of 3.2μm,primarily composed of the BCCβphase and a small amount of the hCPαphase,were examined in a temperature range of 473 K to 623 *** microstructural refinement of this alloy was achieved by employing high-ratio differential speed *** best superplasticity was achieved at 523 K and at strain rates of 10^(-4)-5×10^(-4)s^(-1),where tensile elongations of 550±600%were *** the heating and holding stage of the tensile samples prior to tensile loading,a significant increase in grain size was observed at temperatures above 573 ***,it was important to consider this effect when analyzing and understanding the superplastic deformation behavior and *** the investigated strain rate range,the superplastic flow at low strain rates was governed by lattice diffusion-controlled grain boundary sliding,while at high strain rates,lattice diffusion-controlled dislocation climb creep was the rate-controlling deformation *** was concluded that solute drag creep is unlikely to *** the late stages of deformation at 523 K,it was observed that grain boundary sliding led to the agglomeration of theαphase,resulting in significant strain *** mechanism maps were constructed forβ-Mg-Li alloys in the form of 2D and 3D formats as a function of strain rate,stress,temperature,and grain size,using the constitutive equations for various deformation mechanisms derived based on the data of the current tests.

关键词： Magnesium-lithium alloy Superplasticity Severe plastic deformation Grain size Grain growth

The role of ginseng as an anti-asthmatic agent

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Acupuncture and herbal Medicine 2024年第3期4卷 358-366页

作者： Kailynn j.Yang Liana Y.A.Bautista Danielle G.Iben Dana h.Tran Loyola University of Chicago Stritch School of Medicine MaywoodILUSA

Introduction Asthma is an inflammatory obstructive respiratory lung disease characterized by limited *** is estimated that more than 300 million people worldwide are affected by asthma,and this number is expected to increase over the next few years[1].Uncontrolled asthma is associated with a severely impaired quality of life and increased mortality rates[2].Other adverse effects of poorly controlled asthma include obesity,pneumonia.

关键词： asthma impaired mortality

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细胞糖酵解对猪流行性腹泻病毒复制的影响

畜牧与兽医 2024年第3期56卷 113-117页

作者：吴冰季霖徐雅雯唐泰山杨龙圣何召庆范红结蔺辉星南京农业大学动物医学院江苏南京210095 南京海关动植物与食品检测中心江苏南京210019 兆丰华生物科技(南京)有限公司江苏南京211102

为研究猪流行性腹泻病毒(PEDV)感染细胞后,细胞糖酵解的变化及其对PEDV复制的影响,本试验通过实时荧光定量PCR和Western blot检测PEDV感染猪小肠上皮细胞IPEC-j2后36 h糖酵解相关酶己糖激酶2(hK2)的表达水平,然后通过添加糖酵解抑制剂2... 详细信息

为研究猪流行性腹泻病毒(PEDV)感染细胞后,细胞糖酵解的变化及其对PEDV复制的影响,本试验通过实时荧光定量PCR和Western blot检测PEDV感染猪小肠上皮细胞IPEC-j2后36 h糖酵解相关酶己糖激酶2(hK2)的表达水平,然后通过添加糖酵解抑制剂2-脱氧-D-葡萄糖(2-DG)来进一步验证细胞糖酵解对PEDV复制的影响,最后检测了正常浓度葡萄糖(5.5 mmol/L)和高浓度葡萄糖(11.1 mmol/L和22.2 mmol/L)培养条件下PEDV复制情况来探究葡萄糖浓度对PEDV复制的影响。结果表明,PEDV感染显著增加糖酵解限速酶hK2的表达,PEDV感染可增强IPEC-j2细胞的糖酵解,细胞糖酵解水平增强有利于PEDV的复制。在一定范围内提高葡萄糖浓度可促进PEDV复制。研究结果为初步阐明PEDV感染机制以及冠状病毒病的综合防控提供了理论依据。

关键词：猪流行性腹泻病毒糖酵解复制

Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in hexagonal Close-Packed Titanium

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Acta Metallurgica Sinica(English Letters) 2024年第9期37卷 1590-1600页

作者： Z.C.Meng K.G.Wang T.Ali D.Li C.G.Bai D.S.Xu S.j.Li A.h.Feng G.j.Cao j.h.Yao Q.B.Fan h.Wang R.Yang Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Interdisciplinary Centre for Additive Manufacturing(ICAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Key Laboratory for Light-Weight Materials Nanjing Tech UniversityNanjing 210009China National Key Laboratory of Science and Technology on Materials Under Shock and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401135China

The mechanical response of a single crystal titanium sample against(0001)α surface impact was investigated using molecular dynamics ***,non-uniform plastic deformation was observed in the *** high strain rates,amorphization occurred near the edge of the contact region where severe shear strain induced a large number of stacking faults(SFs)and *** contrast,the central part of the contact region underwent less deformation with significantly fewer ***,instead of amorphization by consuming SFs and dislocations,there was a gradual increase in the density of dislocations and SFs during the process of *** local amorphous regions eventually grew into shear bands.

关键词： Shock compression Amorphization Shear band Titanium Molecular dynamics

Fe对藻菌共生体在养殖废水处理中的EPS分泌及膜污染影响研究

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工业水处理 2024年

作者：田茂芝丁梓尧孙晨周玮钰王圣智万瀚宇李昆南昌大学资源与环境学院鄱阳湖环境与资源利用教育部重点实验室

通过在模拟养殖废水中分别投加不同质量浓度的Fe3+(F～j组：0、15、40、60、150 mg/L)，对藻菌共生体进行共培养，来探究不同质量浓度Fe3+对藻菌共生体胞外聚合物(EPS)分泌的影响，进一步将EPS组分进行分离(可溶性微生物(SMP)、松散结... 详细信息

通过在模拟养殖废水中分别投加不同质量浓度的Fe3+(F～j组：0、15、40、60、150 mg/L)，对藻菌共生体进行共培养，来探究不同质量浓度Fe3+对藻菌共生体胞外聚合物(EPS)分泌的影响，进一步将EPS组分进行分离(可溶性微生物(SMP)、松散结合型胞外聚合物(LB-EPS)、紧密结合型胞外聚合物(TB-EPS)和微生物絮体残渣(MFR)４个部分)，结合膜污染测试实验考察各EPS组分对藻菌共生体在废水处理过程中膜污染的贡献情况，以探究Fe3+对藻菌共生体的膜污染的影响和作用机制。实验结果表明，铁离子的加入可有效减缓膜污染，铁离子浓度为150 mg/L时，膜污染最轻，这归因于藻菌絮体粒径最大及小分子物质最少。模型拟合结果发现，F组主要与标准堵塞模型有较高拟合度，G、h组与滤饼层、中间堵塞模型有较高的拟合度，I、j组与完全堵塞模型、中间堵塞模型及滤饼层有较高的的拟合度。结合膜面污染物的成分分析发现，造成膜污染的主要物质为色氨酸类蛋白质、酪氨酸类蛋白质和微生物代谢副产物。

关键词：藻菌共生体胞外聚合物养殖废水三价铁离子膜污染

Unmixing detrital zircon U-Pb ages reveals tectonic and climatic depositional influences on the Carboniferous Ansilta Formation,Calingasta-Uspallata Basin,Western Argentina

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Geoscience Frontiers 2024年第4期15卷 61-77页

作者： j.R.Malone j.E.Malone j.L.Isbell D.h.Malone j.P.Craddock K.N.Pauls Department of Geological Sciences Jackson School of GeosciencesUniversity of Texas at AustinAustinTX 78712USA Iowa Geological Survey University of IowaIowa CityIA 52240USA Department of Geosciences University of Wisconsin-MilwaukeeMilwaukeeWI 53211USA Department of Geography Geology and the EnvironmentIllinois State UniversityNormalIL 61790-4400USA

The Late Paleozoic Ice Age(LPIA)was a principal control of sedimentation across Gondwana from the late Devonian through early *** assess the hypothesis that glacial to interglacial transitions in western Argentina were the primary control influencing sediment routing patterns among the various Carboniferous-Permian basins in western *** Carboniferous Ansilta Formation consists of glaciomarine,nearshore,and fluvial systems deposited during the LPIA along the eastern margin of the Calingasta-Uspallata Basin in *** lower,glacially influenced succession of the Ansilta Formation records at least five glacial advances;the upper succession of consists of progradational shallow marine,deltaic,and fluvial *** combine 1225 new U-Pb zircon ages from six samples of the Carboniferous Ansilta Formation in the Calingasta-Uspallata Basin with 5864 U-Pb ages from 147 pub-lished samples in the detrital Pymix forward mixture model to characterize provenance *** the glacially influenced lower Ansilta Formation,sediment was derived locally from the Protoprecordillera,which was a prominent highland with alpine glaciers flowing west and east into the Calingasta-Uspallata and Paganzo basins,***,there was little or no connection between these two basins during Serpukhovian-Bashkirian *** fluvial/deltaic upper Ansilta had distal sediment sources in the Sierras ***,our results support the collapse of the Protoprecordillera topographic barrier,enabling drainage patterns connecting the Paganzo and Calingasta-Uspallata basins by late Pennsylvanian-early Permian time.

关键词： Late Paleozoic Ice Age Argentina Calingasta-Uspallata Basin Ansilta Formation Detrital zircon provenance

Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/CdS heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.Y.huang Z.Yang S.Y.Yang Z.h.Dai Y.j.Liu j.h.Liao G.Y.Zhong Z.j.Xie Y.P.Fang S.S.Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable Ti_(3)C_(2)T_(x)MXene/CdS heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2D)CdS nanosheets on 2D MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of CdS *** study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： Two-dimensional structure heterostructure Photothermal effect Photocatalyst hydrogen evolution

双重活化多孔碳氮材料实现流动电极电容去离子高效矿井水脱盐

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煤炭学报 2024年

作者：贺琼琼彭海森孟振苗真勇万克记许恩乐高明强黄少萌中国矿业大学炼焦煤资源绿色开发全国重点实验室中国矿业大学化工学院中国矿业大学环境与测绘学院

严格的环保法规驱动下，煤矿在高盐矿井水回收处理上面临的挑战不断升级，因此迫切需要研发高效的深度脱盐技术，以突破行业困境并实现非常规水资源的利用。虽然流动电极电容去离子（FCDI）技术在脱盐领域内崭露头角，但仍存在电极材料... 详细信息

严格的环保法规驱动下，煤矿在高盐矿井水回收处理上面临的挑战不断升级，因此迫切需要研发高效的深度脱盐技术，以突破行业困境并实现非常规水资源的利用。虽然流动电极电容去离子（FCDI）技术在脱盐领域内崭露头角，但仍存在电极材料性能造成的脱盐能力壁垒。本研究提出了一种双重活化多孔碳氮电极材料制备的新方法，以蔗糖为碳源，三聚氰胺为氮源，整合了双模板法、水蒸气活化、酸浸氧化及氮掺杂的优点，改善了材料的润湿性和导电性，同时使得电极材料具备独特整齐排列的柱状结构、更大的比表面积(1039.76 m2/g)、更丰富的孔结构(0.32 cm3/g)、更多的氮氧电负性点位和更好的润湿性能，以此实现高效，低能耗的矿井水脱盐。该材料(h2O（g）-hNO3/CN)应用于FCDI装置中且经过电压、活性材料含量、处理液初始浓度及ph的工艺优化后对1 g/L的NaCl溶液脱盐5 h，除盐率高达100%，平均脱盐速率、脱盐量、电荷效率及标准脱盐量能耗分别为0.00952 mg/(min·cm2)，37.08 mg/g，24.02%和481.98 j/mol，即使经过七次循环吸脱附实验，除盐率仍能达到95.71%。为了探究h2O（g）-hNO3/CN的吸附除盐机理，进行了电化学性能、吸附动力学及等温线的分析。结果表明其比电容高达99.38 F/g，内电阻极小；对Na+离子的吸附更符合伪二阶动力学模型和Langmuir等温线模型，对Na+离子的饱和吸附量为4.30 mg/g，饱和吸附时间为120 min。本研究为FCDI电极材料的制备及优化提供了一种新的思路，并探究了其脱盐性能和机理，为高盐矿井水的绿色回收处理开辟了一条新的路径。

关键词：双重活化多孔碳氮材料流动电极电容去离子高盐矿井水脱盐

A hydrodynamic modelling of wave-activated bodies for wavelet marine regions

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Clean Energy 2024年第2期8卷 35-47页

作者： j.S.Peh Mohammed W.Muhieldeen N.h.Shuaib Mechanical Engineering Department Faculty of EngineeringTechnology&Built EnvironmentUCSI UniversityKuala Lumpur56000Malaysia MTC Engineer Sdn.Bhd Shah AlamSelangorMalaysia

Recently,most wave energy research has targeted sea areas with high power density under extreme wave conditions for *** trend often leads to higher energy costs for wave power ***,many marine areas with low power density,characterized by wavelet conditions and less destructive forces than extreme wave conditions,remain ***,this study aimed to propose a wave-activated body model for sea regions with wavelet *** wave-activated body design process encompassed site selection,parameter determination,geometry design,comparison and performance evaluation using the ANSYS®AQWA *** results indicated that the proposed device achieved the desired heave motion,with an amplitude range of 1.2 to-2.5 m,validating its potential for deployment in marine regions with wavelet ***,while the proposed design is optimized for wavelet conditions,it was found to have potential limitations in extreme wave *** observation emphasizes the challenge of formulating a generalized design suitable for both ***,it is pivotal for wave-activated body designs to be customized based on the specific ocean conditions they target,underscoring the need for specialized designs of wave energy converters that consider the unique wave characteristics of their deployment sites.

关键词： wave energy converter South China sea renewable and sustainable energy wavelet ANSYS AQWA hydrodynamic wave-activated bodies

A vectorial model for the nonlinear gradient force exerted on metallic Rayleigh nanoparticles

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Chinese Optics Letters 2024年第2期22卷 207-213页

作者：朱政张聿全闵长俊 Aurèle j.LAdam h.Paul Urbach 袁小聪 Research Center for humanoid Sensing Research Institute of Intelligent SensingZhejiang LabHangzhou 311100China Nanophotonics Research Center Institute of Microscale Optoelectronics&State Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060China Optics Research Group ImPhys DepartmentFaculty of Applied SciencesDelft University of TechnologyDelft 2628 CJThe Netherlands

Optical tweezers have proved to be a powerful tool with a wide range of *** gradient force plays a vital role in the stable optical trapping of *** scalar method is convenient and effective for analyzing the gradient force in traditional optical ***,when the third-order nonlinear effect of the nano-object is stimulated,the scalar method cannot adequately present the optical response of the metal nanoparticle to the external optical ***,we propose a theoretical model to interpret the nonlinear gradient force using the vector *** combining the optical Kerr effect,the polarizability vector of the metallic nanoparticle is derived.A quantitative analysis is obtained for the gradient force as well as for the optical potential *** vector method yields better agreement with reported experimental *** suggest that this method could lead to a deeper understanding of the physics relevant to nonlinear optical trapping and binding phenomena.

关键词： gradient forces nonlinear effect metallic nanoparticles