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Enhanced dye degradation capability and reusability of Fe-based amorphous ribbons by surface activation

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Journal of Materials Science & Technology 2020年第18期52卷 163-173页

作者： Fang miao Qianqian Wang Siyi Di Lu yun Jing Zhou Baolong Shen School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing 211189China Institute of Massive Amorphous Metal Science China University of Mining and TechnologyXuzhou 221116China

The dye degradation capability and reusability of FeSiBNbCu amorphous ribbons are largely enhanced due to the surface activation by ball *** time required for degrading 50%of acid orange 7 solution by the activated FeSiBNbCu amorphous ribbons is only 1/6 of that by the as-quenched ribbons,while the reusable times of the activated ribbons is 6 times larger than that of the as-quenched *** superior degradation capability and better reusability of the activated FeSiBNbCu amorphous ribbons come from not only the uneven topography of the ribbon surface induced by ball milling,but also the stored deformation energy,including the structural rejuvenation and the enlarged residual *** structural rejuvenation in the activated FeSiBNbCu amorphous ribbons is verified by heat relaxation analysis,and the increased residual stress is confirmed by the magnetic domain measurements on the ribbon ***,the environmental adaptability of the activated FeSiBNbCu amorphous ribbons is also *** possible pathways for degradation of acid orange 7 using the activated ribbons,including azo bond cleavage and hydroxylation of benzene ring,are *** work provides a new method to effectively improve the degradation performance of amorphous ribbons.

关键词： Structural rejuvenation Stored deformation energy Residual stress Magnetic force microscopy

Fail-safe topology optimization of continuum structures with fundamental frequency constraints based on the ICM method

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Acta Mechanica Sinica 2020年第5期36卷 1065-1077,I0003页

作者： Jia-Zheng Du Fan-Wei Meng yun-Hang guo yun-Kang Sui College of Mechanical Engineering and Applied Electronics Technology Beijing University of TechnologyBeijing 100124China State Key Laboratory of Structural Analysis for Industrial Equipment.Department of Engineering Mechanics Dalian University of TechnologyDalian 116023China

It is an important topic to improve the redundancy of optimized configuration to resist the local failure in topology optimization of continuum *** a fail-safe topology optimization problem has been solved effectively in the ficld of *** this paper,the fail-safe topology optimization problem is extended to the field of frequency topology *** on the independent continuous mapping(ICM)method,the model of fail-safe topology optimization is established with the objective of minimal weight integrating with the discrete condition of topological variables and the constraint of the fundamental *** fail-safe optimization model established above is substituted by a sequence of subproblems in the form of the quadratic program with exact second-order information and solved efficiently by the dual sequence quadratic programming(DSQP)*** numerical result reveals that the optimized fail-safe structure has more complex configuration and preserved materials than the structure obtained from the traditional frequency topology optimization,which means that the optimized fail-safe structure has higher ***,the optimized fail-safe structure guarantees that the natural frequency meets the constraint of fundamental frequency when the local failure ocurs,which can avoid the structural frequency to be sensitive to local *** fail-safe optimirzation topology model is proved effective and feasible by four numerical examples.

关键词： Fail-safe Frequency constraints Topology optimization Independent continuous mapping method

Numerical Investigation on Dynamic Characteristics of Casing Deformation During Marine Hydrate Production

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China Ocean Engineering 2022年第4期36卷 638-648页

作者： CHANG Yuan-jiang WANG Kang CHEN guo-ming SUN Bao-jiang SUN Huan-zhao JI miao-miao Centre for Offshore Engineering and Safety Technology(COEST) China University of Petroleum(East China)Qingdao 266580China College of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China

Formation subsidence is inevitable during marine hydrate decomposition,and the consequent casing deformation seriously threatens the security of sustainable hydrate *** to insufficient observed data of formation subsidence in field,displacement boundary condition of casing is *** the conventional static methods are inapplicable for the calculation of casing deformation in hydrate production *** present work aims at proposing an approach to investigate dynamic deformation of the casing during hydrate *** the proposed methodology,based on the movement theory of hydrate decomposition front,hydrate decomposition process can be simulated,in which hydrate reservoir strength formation subsidence showed time-dependent *** considering the actual interactions among casing,cement and formation,three models of hydrate production well are developed to reveal the static and dynamic deformation mechanisms of the *** application of the proposed methodology is demonstrated through a case *** show that buckling deformation and bending deformation of casing reduce the passing ability of downhole tools in deformed casing by 4.2%and 7.5%,*** the progress of hydrate production,buckling deformation will increase obviously,while a little increase of bending deformation will occur,as the formation slippage induced by formation inclination is much larger than that caused by hydrate *** proposed approach can provide theoretical reference for improving casing integrity of marine hydrate production.

关键词： hydrate production casing deformation dynamic characteristics formation inclination

One-pot synthesis of 7-aryl-11,12-dihydrobenzo[h]pyrimido-[4,5-b]quinoline-8,10(7H,9H)-diones via three-component reaction in ionic liquid

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Chinese Chemical Letters 2010年第12期21卷 1435-1438页

作者： Hong yun guo Yi Yu College of Chemical Engineering and Materials Zhejiang University of Technology Hangzhou 310014 China

A series of new 7-aryl-11,12-dihydrobenzo[h]pyrimido-[4,5-b]quinoline-8,10（7H,9H）-diones were synthesized via three-component reaction of aldehydes,l-naphthylamine and barbituric acid in ionic *** method provided se... 详细信息

关键词： Aldehyde 1-Naphthylamine Barbituric acid Ionic liquid

Engineering plants to secrete affinity-tagged pathogen elicitors for deciphering immune receptor complex or inducing enhanced immunity

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Journal of Integrative Plant Biology 2020年第6期62卷 761-776页

作者： Shuang miao Jiuer Liu Jianhang guo Jian-Feng Li Guangdong Provincial Key Laboratory of Plant Resources State Key Laboratory of BiocontrolMOE Key Laboratory of Gene Function and RegulationSchool of Life SciencesSun Yat-sen UniversityGuangzhou 510275China

Plant cells mount plenty of pattern-recognition receptors(PRRs)to detect the microbe-associated molecular patterns(MAMPs)from potential microbial *** are overrepresented by proteinaneous patterns,such as the flg22 peptide from bacterial *** of PRR receptor complex components by forward or reverse genetics can be time/labor-consuming,and be confounded by functional ***,we present a strategy for identifying PRR complex components by engineering plants to inducibly secrete affinity-tagged proteinaneous MAMPs to the *** PRR protein complexes bound to self-secreted MAMPs are enriched through affinity purification and dissected by mass *** a proof of principle,we could capture the flg22 receptor FLS2 and co-receptor BAK1 using Arabidopsis plants secreting FLAG-tagged flg22 under ***,we identified receptor-like kinases LIK1 and PEPR1/PEPR2 as potential components in the FLS2 receptor complex,which were further validated by protein–protein interaction assays and the reverse genetics *** study showcases a simple way to biochemically identify endogenous PRR complex components without overexpressing the PRR or using chemical crosslinkers,and suggests a possible crosstalk between different immune receptors in plants.A modest dose of estradiol can also be applied to inducing enhanced immunity in engineered plants to both bacterial and fungal pathogens.

关键词： immunity complex mount

On the 2-primary Part of Tame Kernels of Real Quadratic Fields

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Acta Mathematica Sinica,English Series 2016年第7期32卷 807-812页

作者： Xiao yun CHENG Xue Jun guo School of Science Nanjing University of Aeronautics and Astronautics Department of Mathematics Nanjing University

Let F = Q（x/P）, where p = 8t ＋ 1 is a prime. In this paper, we prove that a speclm case of Qin＇s conjecture on the possible structure of the 2-primary part of K2OF up to 8-rank is a consequence of a conjecture of Cohen and Lagarias on the existence of governing fields. We also characterize the 16-rank of K2OF, which is either 0 or 1, in terms of a certain equation between 2-adic Hilbert symbols being satisfied or not.

关键词： Tame kernels class groups diophantine equations

Finite Groups with Its Power Automorphism Groups Having Small Indices

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Acta Mathematica Sinica,English Series 2009年第7期25卷 1097-1108页

作者： Jun Xin WANG Xiu yun guo Department of Mathematics Shanxi University of Finance and Economics Taiyuan 030006 P.R. China Department of Mathematics Shanghai University Shanghai 200444 P.R.China

In this paper, a finite group G with IAut（G）： P（G）I ^- p or pq is determined, where P（G） is the power automorphism group of G, and p, q are distinct primes. Especially, we prove that a finite group G satisfies ｜Aut（G）： P（G）｜= pq if and only if Aut（G）/P（G） ≌S3. Also, some other classes of finite groups are investigated and classified, which are necessary for the proof of our main results.

关键词： power automorphism group norm action

Numerical Simulation of Coal Floor Fault Activation Influenced by Mining

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Journal of China University of Mining and Technology 2006年第4期16卷 385-388页

作者： WANG Lian-guo miao Xie-xing School of Sciences China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

By means of the numerical simulation software ANSYS, the activation regularity of coal floor faults caused by mining is simulated. The results indicate that the variation in horizontal, vertical and shear stresses, as well as the horizontal and vertical displacements in the upper and the lower fault blocks at the workface are almost identical. Influ- enced by mining of the floor rock, there are stress releasing and stress rising areas at the upper part and at the footwall of the fault. The distribution of stress is influenced by the fault so that the stress isolines are staggered by the fault face and the stress is focused on the rock seam around the two ends of the fault. But the influence in fault activation on the upper or the lower fault blocks of the workface is markedly different. When the workface is on the footwall of the fault, there is a horizontal tension stress area on the upper part of the fault; when the workface is on the upper part of the fault, it has a horizontal compressive stress area on the lower fault block. When the workface is at the lower fault block, the maximum vertical displacement is 5 times larger then when the workface is on the upper fault block, which greatly in- creases the chance of a fatal inrush of water from the coal floor.

关键词： mining fault activation: simulation

On Finite Groups with Some Semi Cover-Avoiding Subgroups

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Acta Mathematica Sinica,English Series 2007年第9期23卷 1689-1696页

作者： Xiu yun guo Li Li WANG Department of Mathematics Shanghai University Shanghai 200444 P. R. China

A subgroup H of a finite group G is said to have the semi-cover-avoiding property in G if there is a chief series of G such that H covers or avoids every chief factor of the series. In this paper, some new results are... 详细信息

关键词： semi-cover-avoidance property fitting subgroups supersolvable groups