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SPECIFIC ACTIVITY DETERmINATION OF ACETOLACTATE SYNTHASE FROm mAIzE (zEA mAYS L.)

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SPECIFIC ACTIVITY DETERMINATION OF ACETOLACTATE SYNTHASE FRO...

Effect of Ti-Cr-V alloy as a dopant on the dehydriding kinetics of li-mg-N-H system

The 18th Asian-Pacific Weed Science Society Conference

作者： z.J.Fan C.F.Qian z.m.li L.X.Wang Institute of Elemento-Organic Chemistry Nankai UniversityNational Key Laboratory of Elemento-Organic ChemistryTianjin 300071China Department of Applied Chemistry China Agricultural UniversityKey Laboratory of Pesticide Chemistry & Application Technology of Ministry of AgricultureBeijing 100094China

A normal spectrophotometric method has been established for determination specific activity of acetolactate synthase extracted from maize(zea mays L.).In this study,the condition of enzyme reaction and decarboxylation of acetolactate and condition of color development of reaction complex have been *** red color complex of acetion reacted wthα-naphthol and creatine was stable at room temperature within 90 *** method has been used as determination of activity for ALS in vitro and in vivo screening model of high efficacy *** had high in vitro ALS activity to maize CAU 108,which I was 3.33±0.82 nmol·L,while 2-chlorobenzenesulfonamide had almost no inhibition to ALS from maize CAU 108 in *** same results were observed in in vivo A1S study of chlorsulfuron and 2- chlorobenzenesulfonamide indicated.

关键词： Acetolactate synthase specific activity maize(zea mays L.) chlorsulfuron 2-chlorobenzenesulfonamide

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Effect of Ti-Cr-V alloy as a dopant on the dehydriding kinet...

Greatly enhanced corrosion/wear resistances of epoxy coating for mg alloy through a synergistic effect between functionalized graphene and insulated blocking layer

第九届全国氢能学术会议

作者： J.C.Wang,H.L.li,S.m.Wang,z.m.li,Y.li,L.J.Jiang,X.P.liu General Research Institute for Non-ferrous metals,China

li-mg-N-H system with high hydrogen capacity derived from li-N-H that was proposed by Chen et *** ***,the application of the system is hindered by its problematic dehydriding kinetics and high operating *** this work,the effect of solid solution (Ti-Cr-V) on the dehydriding kinetics of the system was ***-mg-N-H system doped with 4mol%Ti-Cr-V alloy was prepared by ball milling a mixture of liNH,mgH

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Journal of magnesium and Alloys 2024年第1期12卷 332-344页

作者： z.Y.Xue X.J.li J.H.Chu m.m.li D.N.zou L.B.Tong School of metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key Laboratory of Advanced Design and manufacturing for Vehicle Body Hunan UniversityChangsha 410082China

The poor corrosion and wear resistances of mg alloys seriously limit their potential applications in various *** conventional epoxy coating easily forms many intrinsic defects during the solidification process,which cannot provide sufficient *** the current study,we design a double-layer epoxy composite coating on mg alloy with enhanced anti-corrosion/wear properties,via the spin-assisted assembly *** outer layer is functionalized graphene(FG)in waterborne epoxy resin(WEP)and the inner layer is Ce-based conversion(Ce)*** FG sheets can be homogeneously dispersed within the epoxy matrix to fill the intrinsic defects and improve the barrier *** Ce film connects the outer layer with the substrate,showing the transition *** corrosion rate of Ce/WEP/FG composite coating is 2131 times lower than that of bare mg alloy,and the wear rate is decreased by~90%.The improved corrosion resistance is attributed to the labyrinth effect(hindering the penetration of corrosive medium)and the obstruction of galvanic coupling *** synergistic effect derived from the FG sheet and blocking layer exhibits great potential in realizing the improvement of multi-functional integration,which will open up a new avenue for the development of novel composite protection coatings of mg alloys.

关键词： mg alloy Functionalized graphene Epoxy coating Corrosion/wear resistance Blocking layer

RNA modifications in the progression of liver diseases:from fatty liver to cancer

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Science China(life Sciences) 2024年第10期67卷 2105-2119页

作者： Simiao li Wajahat z mehal Xinshou Ouyang Department of Internal medicine Section of Digestive DiseasesYale University School of MedicineNew Haven CT 06520USA

Non-alcoholic fatty liver disease(NAFLD)has emerged as a prominent global health concern associated with high risk of metabolic syndrome,and has impacted a substantial segment of the *** disease spectrum ranges from simple fatty liver to non-alcoholic steatohepatitis(NASH),which can progress to cirrhosis and hepatocellular carcinoma(HCC)and is increasingly becoming a prevalent indication for liver *** existing therapeutic options for NAFLD,NASH,and HCC are limited,underscoring the urgent need for innovative treatment *** into gene expression,particularly RNA modifications such as N6methyladenosine(m^(6)A),hold promising avenues for *** modifications play integral roles in RNA metabolism and cellular functions,encompassing the entire NAFLD-NASH-HCC *** review will encompass recent insights on diverse RNA modifications,including m^(6)A,pseudouridine(Ψ),N^(1)-methyladenosine(m^(1)A),and 5-methylcytidine(m^(5)C)across various RNA *** will uncover their significance in crucial aspects such as steatosis,inflammation,fibrosis,and ***,prospective research directions and therapeutic implications will be explored,advancing our comprehensive understanding of the intricate interconnected nature of these pathological conditions.

关键词： m^(6)A RNA modification NASH NAFLD HCC fatty liver

Effects of multiple shapes for steady flow with transformer oil+Fe_(3)O_(4)+TiO_(2) between two stretchable rotating disks

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Applied mathematics and mechanics(English Edition) 2024年第2期45卷 373-388页

作者： m.RAHmAN m.TURKYILmAzOGLU z.mUSHTAQ Department of mathematics Mirpur University of Science and TechnologyMirpur 10250Pakistan Department of mathematics Hacettepe UniversityBeytepeAnkara 06532Turkiye

In this study,we examine the effects of various shapes of nanoparticles in a steady flow of hybrid nanofluids between two stretchable rotating *** steady flow of hybrid nanofluids with transformer oil as the base fluid and Fe_(3)O_(4)+TiO_(2)as the hybrid nanofluid is *** shapes of Fe_(3)O_(4)+TiO_(2)hybrid nanofluids,including sphere,brick,blade,cylinder,and platelet,are *** shape exists in the same volume of a *** leading equations(partial differential equations(PDEs))are transformed to the nonlinear ordinary differential equations(ODEs)with the help of similarity *** system of equations takes the form of ODEs depending on the boundary conditions,whose solutions are computed numerically by the bvp4c mATLAB *** outputs are compared with the previous findings,and an intriguing pattern is discovered,such that the tangential velocity is increased for the rotation parameter,while it is decreased by the stretching values because of the lower *** the reaction rate parameter,the concentration boundary layer becomes shorter,and the activation energy component increases the rate at which mass transfers come to the higher disk but have the opposite effect on the bottom *** ranges of various parameters taken into account are Pr=6.2,Re=2,m=1.0,φ_(1)=φ_(2)=0.03,K=0.5,S=-0.1,Br=0.3,Sc=2.0,α_(1)=0.2,γ=0.1,E_(n)=2.0,and q=1.0,and the rotation factor K is within the range of 0 to 1.

关键词： transformer oil Brinkman number skin friction coefficient double rotating disk Nusselt number Sherwood number

Fast efficient photon deceleration in plasmas by using two laser pulses at different frequencies

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matter and Radiation at Extremes 2024年第3期9卷 11-18页

作者： Y.X.Wang X.L.zhu S.m.Weng P.li X.F.li H.Ai H.R.Pan z.m.Sheng Key Laboratory for Laser Plasmas(moe) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China Research Center of Laser Fusion of China Academy of Engineering Physics MianyangSichuan 621900China State key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Tsung-dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China

The generation of ultrashort high-power light sources in the mid-infrared(mid-IR)to terahertz(THz)range is of interest for applications in a number of fields,from fundamental research to biology and *** conventional laser technology,photon deceleration in plasma wakes provides an alternative approach to the generation of ultrashort mid-IR or THz ***,we present a photon deceleration scheme for the efficient generation of ultrashort mid-IR or THz pulses by using an intense driver laser pulse with a relatively short wavelength and a signal laser pulse with a relatively long *** signal pulse trails the driver pulse with an appropriate time delay such that it sits at the front of the second wake bubble that is driven by the driver *** to its relatively long wavelength,the signal pulse will be subjected to a large gradient of the refractive index in the plasma wake ***,the photon deceleration in the plasma wake becomes faster and more efficient for signal pulses with longer *** greatly enhances the capacity and efficiency of photon deceleration in the generation of ultrashort high-power light sources in the long-wavelength IR and THz spectral ranges.

关键词： laser ultrashort photon

Effect of Al_(2)O_(3)on the mechanical Properties of(B_(4)C+Al_(2)O_(3))/Al Neutron Absorbing materials

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Acta metallurgica Sinica(English Letters) 2024年第8期37卷 1411-1420页

作者： J.X.Cai B.m.Shi N.li Y.liu z.G.zhang Y.N.zan Q.z.Wang B.L.Xiao z.Y.ma Shi‑Changxu Innovation Center for Advanced materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key Laboratory of Nuclear materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Nuclear Equipment Division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China Department of materials Science School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)C/Al composites are widely utilized as neutron absorbing materials for the storage and transportation of spent nuclear *** order to improve the high-temperature mechanical properties of B_(4)C/Al composites,in-situ nano-Al_(2)O_(3)was introduced utilizing oxide on Al powder *** this study,the Al_(2)O_(3)content was adjusted by utilizing spheroid Al powder with varying diameters,thereby investigating the impact of Al_(2)O_(3)content on the tensile properties of(B_(4)C+Al_(2)O_(3))/Al *** was found that the pinning effect of Al_(2)O_(3)on the grain boundaries could hinder the recovery of dislocations and lead to dislocation accumulation at high *** the result,with the increase in Al_(2)O_(3)content and the decrease in grain size,the high-temperature strength of the composites increased *** finest Al powder used in this investigation had a diameter of 1.4μm,whereas the resultant composite exhibited a maximum strength of 251 mPa at room temperature and 133 mPa at 350℃,surpassing that of traditional B_(4)C/Al composites.

关键词： Al matrix composites Neutron absorbing materials (B_(4)C+Al_(2)O_(3))/Al composites High-temperature strength

Anisotropic time-dependent behaviors of shale under direct shearing and associated empirical creep models

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Journal of Rock mechanics and Geotechnical Engineering 2024年第4期16卷 1262-1279页

作者： Yachen Xie michael z.Hou Hejuan liu Cunbao li Shenzhen Key Laboratory of Deep Engineering Sciences and Green Energy Shenzhen UniversityShenzhen518060China Institute of Subsurface Energy Systems Clausthal University of TechnologyClausthal-Zellerfeld38678Germany State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China

Understanding the anisotropic creep behaviors of shale under direct shearing is a challenging *** this context,we conducted shear-creep and steady-creep tests on shale with five bedding orientations (i.e.0°,30°,45°,60°,and 90°),under multiple levels of direct shearing for the first *** results show that the anisotropic creep of shale exhibits a significant stress-dependent *** a low shear stress,the creep compliance of shale increases linearly with the logarithm of time at all bedding orientations,and the increase depends on the bedding orientation and creep *** high shear stress conditions,the creep compliance of shale is minimal when the bedding orientation is 0°,and the steady-creep rate of shale increases significantly with increasing bedding orientations of 30°,45°,60°,and 90°.The stress-strain values corresponding to the inception of the accelerated creep stage show an increasing and then decreasing trend with the bedding orientation.A semilogarithmic model that could reflect the stress dependence of the steady-creep rate while considering the hardening and damage process is *** model minimizes the deviation of the calculated steady-state creep rate from the observed value and reveals the behavior of the bedding orientation's influence on the steady-creep *** applicability of the five classical empirical creep models is quantitatively *** shows that the logarithmic model can well explain the experimental creep strain and creep rate,and it can accurately predict long-term shear creep *** on an improved logarithmic model,the variations in creep parameters with shear stress and bedding orientations are *** abovementioned findings,a mathematical method for constructing an anisotropic shear creep model of shale is proposed,which can characterize the nonlinear dependence of the anisotropic shear creep behavior of shale on the bedding orientation.

关键词： Rock anisotropy Direct shear creep Creep compliance Steady-creep rate Empirical model Creep constitutive model

垂直磁场中YBCO薄膜的磁通密度和电流密度分布(英文)

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低温物理学报 1999年第6期21卷 401-404页

作者：李志敏 S.A.Aruna 覃孟军姚希贤南京大学物理系!南京210093

通过使用扩展后的Ｍｉｋｈｅｅｎｋｏ等人提出的临界态模型，我们用数值计算方法找出了圆盘状超导薄膜在垂直外磁场中的磁通密度分布和电流密度分布．其中考虑到临界电流密度Ｊｃ会随外磁场Ｈａ改变而变化，所以我们采用了Ｋｉｍ型... 详细信息

通过使用扩展后的Ｍｉｋｈｅｅｎｋｏ等人提出的临界态模型，我们用数值计算方法找出了圆盘状超导薄膜在垂直外磁场中的磁通密度分布和电流密度分布．其中考虑到临界电流密度Ｊｃ会随外磁场Ｈａ改变而变化，所以我们采用了Ｋｉｍ型表达式Ｊｃ（Ｈ）＝Ｊ０／（１＋（｜Ｈ｜／Ｈ０）ｎ）．计算出的初始磁化曲线和磁滞回线与ＹＢＣＯ薄膜的实验曲线（Ｔ＝５１～７７Ｋ）符合得很好，说明这个方法在这段温区内比较成功．另外我们也得出并讨论了特征参数Ｊ０，Ｈ０随温度的变化关系．

关键词：磁通密度 YBCO 电流密度