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Acoustic Nanowave Absorption through Clustered Carbon Nanotubes Conveying Fluid

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Acta Mechanica Solida Sinica 2016年第3期29卷 257-270页

作者： zijun zhang Yongshou Liu Hailong Zhao Wei Liu Department of Engineering Mechanics Northwestern Polytechnical University

Absorption of acoustic nanowave in specific frequency region is important for the design of acoustic filter. This paper puts forward a meta material model made up of fluid-conveying carbon nanotubes （CNT）, which can absorb acoustic nanowave in a given frequency range by adjusting the lengths and fluid velocities of themselves. Absorption coefficients are calculated out through the combination of the finite element method with the theoretical model, which are 0.4-0.55 relating to different fluid velocities for the crossing-distributed model. Comparisons are made between the crossed model and the aligned one, which prove that the CNT forest with crossed distribution is more effective in acoustic wave absorption.

关键词： acoustic nanowave absorption meta-material clustered carbon nanotubes

Interfacial charge effects of supported-metal-cluster heterostructures on azo hydrogenation catalyzation

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Nano Research 2024年第5期17卷 3853-3862页

作者： Zhenhua Gu Jingli zhang zijun zhang Qingxue Mu Liangchong Yu Taolei Sun Lei Shen Guanbin Gao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases School of ChemistryChemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China

The impact of interfacial charge on catalytic performance of supported-metal-cluster(SMC)heterostructures remains unclear,hindering efforts to develop high-performance SMC *** we systematically investigated interfacial charge effects of SMCs using a model system of graphene-supported gold-nanoclusters(AuNCs/rGO)for azo *** types of SMCs with different interfacial charges were synthesized by anchoring electropositive 2-aminoethanethiol(CSH),amphoteric cysteine(Cys),and electronegative 3-mercaptopropionic-acid(MPA)onto AuNCs/rGO,*** three SMCs exhibited high and selective catalytic activity to azo-hydrogenation in four representative azo *** catalytic activity of Cys@AuNCs/rGO was lower than that of CSH@AuNCs/rGO but higher than that of MPA@AuNCs/***,the cyclic stability of Cys@AuNCs/rGO was inferior to that of both CSH@AuNCs/rGO and MPA@AuNCs/*** mechanistic studies revealed that amino ligands modified CSH@AuNCs and Cys@AuNCs agglomerated into large-size gold nanoparticles on rGO surface during catalytic reaction under NaBH_(4) action,leading to reduced efficiency and cyclic ***,non-amino ligand modified MPA@AuNCs only partially detached from rGO surface without agglomeration,resulting in better cyclic *** of amino groups in ligands such as modifying-NH_(3)^(+)group in Cys into imine to form N-isobutyryl-L-cysteine(NIBC)substantially improved the cyclic stability while maintaining the high activity in the NIBC@AuNCs/rGO catalyst *** work provides an approach for developing a highly-active and stable SMC heterostructure catalyst via manipulating interfacial charges in SMC.

关键词： interfacial charge effect supported-metal-cluster catalyst azo hydrogenation graphene supported gold nanoclusters

Chiral effect on Aβ fibrillation from molecular-scale to nanoscale

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Nano Research 2022年第7期15卷 6721-6729页

作者： Guanbin Gao Guowei Zhu Liangchong Yu zijun zhang Ting zhang Xinglin Liu Cheng zhang Lin Zhou Taolei Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China

β-Amyloid(Aβ)peptide fibrillation,one of the characteristic hallmarks of Alzheimer’s disease,is determined by many interfacial physical-chemical factors,e.g.,charge,hydrophobicity,*** extensive research,chiral effect in different-scales on the fibrillation process of Aβremains ***,molecular-scale,sub-nanoscale,and nanoscale chiral-structures were constructed to investigate their chiral effect on the fibrillation of Aβ_(40) *** structures from molecular-scale to nanoscale were obtained from the different periods of the chemosynthesis process of chiral ZnS quantum-dots(QDs),confirmed by real-time monitoring of circular dichroism *** molecular-scale,both L-penicillamine(L-P)and D-P ligands accelerated the fibrillation of Aβ_(40),and the speed-up effect of D-P was slightly stronger than *** sub-nanoscale,both two chiral Zncomplexes(L-Zn and D-Zn)induced the agglomeration of Aβ_(40) without chirality *** nanoscale,both L-ZnS and DZnS QDs inhibited the fibrillation of Aβ_(40),and the inhibition effect of L-ZnS was notably better than that of ***-situ kinetics experiments of Aβ_(40) co-incubated with two chiral QDs demonstrated that L-ZnS completely prevents the misfolding of Aβ_(40) from unfolded toβ-sheet,while D-ZnS cannot achieve *** site-replacement experiments and simulation results revealed the underlying molecular mechanisms of the different inhibition efficiency of chiral ZnS QDs on Aβ_(40) fibrillation,which mainly attribute to the stereoselectivity interaction between the chiral ligands of ZnS QDs and electro-positive amino acid residues(R5,K16,and K28)of Aβ_(40).This work offers a microscopic insight of chiral effect on Aβfibrillation exerted by structures in different-scales,and provides a guidance in precise regulation of protein fibrillation via manipulating chiral structures in different-scales.

关键词： chirality molecular-scale sub-nanoscale nanoscale Aβ_(40) fibrillation

Impact of the CoFe microstructure etched surface oxidation on Co spin and orbital moment

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Science China(Physics,Mechanics & Astronomy) 2013年第3期56卷 588-592页

作者： GUO YuXian zhang zijun WANG Jie FU ShaoJun XU PengShou Department of Mathematics & Physics Anhui University of Architecture National Synchrotron Radiation Laboratory University of Science and Technology of China

Patterned ferromagnetic thin film shows promising applications in ultra-high density magnetic storage,magnetoresistive transducer,magnetic random access memory and many other *** the performance of these devices is closely associated with the magnetic properties of the etched patterns,it is necessary to study the effects of freshly etched surface oxidation on the magnetic properties of the patterned *** the current work,were carried out an X-ray Magnetic Circular Dichroism(XMCD) study on a 50 nm Co 0.9 Fe 0.1 continuous thin film and a related patterned Co 0.9 Fe 0.1 grating structure etched with a 2 μm *** on the sum rules,the spin and orbital moments were calculated for these two samples,*** results indicated that the spin and orbital moments of grating structure(1.34μ B and 0.24μ B,respectively) decreased 17.3% compared with the corresponding continuous film(1.62μ B and 0.29μ B,respectively).We proposed that the moment decreasing of the patterned grating structure was mainly caused by the etched surface oxidation during the pattern manufacture *** oxidation ratio of Co element in the patterned grating structure is 14.4% calculated from X-ray absorption spectroscopy(XAS) *** the oxidation ratio,we amend the spin and orbital moment of Co and the amended result is basically in accordance with that of continuous film,demonstrating that the difference of the spin and orbital moments between the sub-micron grating unit and the continuous film is really caused by the oxidation.

关键词： magnetic grating structure X-ray Magnetic Circular Dichroism(XMCD) spin moment orbital moment absorption spectrum fitting

Efficacy of Biological and Physical Enhancement on Targeted Muscle Reinnervation

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Cyborg and Bionic Systems 2022年第1期2022卷 55-63页

作者： Siyang Zhong zijun zhang Huan Su Chenyang Li Yifeng Lin Wei Lu Zhendong Jiang Lin Yang Department of Basic Education Zhuhai Campus of Zunyi Medical UniversityZhuhaiChina School of Resources Environmental and Chemical EngineeringNanchang UniversityChina CAS Key Laboratory of HumanMachine InteligenceSymergy Systems Shenzhen Insttutes of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China

Targeted muscle reinnervation(TMR)is a microsurgical repair technique to reconstruct the anatomical structure between thedistal nerve and the muscle stump to provide more myoelectric information to the artificially intlligent *** functional electrical stimulation treatment of the patient's denervated muscle or proximal nerve stump as well asnerve growth factor injection is effective in promoting nerve regeneration and muscle function *** this experiment,wesuccessfully established a TMR rat model and divided Sprague-Dawley(SD)adult male rats into IMR group,TMR+FESgroup,and TMR+NGF group acording to TMR and whether they received FES treatment or NGF injection after *** the recovery ffect of rat neuromuscular function was assessed by analyzing EMG *** the experiments,weconfrmed that growth factor supplementation and lowfrequency electrical stimulation can efectively promote theregeneration of the transplanted nerve as well as signifcantly enhance the motor function of the target muscle and have a positive effect on the regeneration of the transplanted nerve.

关键词： injection function treatment

A SCAR Marker for Detection Resistant Gene Ty-3 in Tomato

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A SCAR Marker for Detection Resistant Gene Ty-3 in Tomato

治术、治体、道体——北宋儒家治理理论演进的三个层次

The Third Conference on Horticulture Science and Technology

作者： Li haitao Liu wenqi Zou Qingdao zhang zijun Horticulture college Shenyang Agricultural University Horticulture Division of Liaoning Academy of Agricultural Science

ISBN: (纸本)9781907801136

Tomato yellow leaf curl disease(TYLCD) is a new disease and causes important yield losses in tomato(Lycopersion esculentum Mill.) in *** breeding resistant hybrids,PCR-based markers often were used for selection resistant *** of the commercial cultivars resistant to TYLCD carry Ty-3 *** order to obtain molecular marker of resistant gene Ty-3,3 homozygous resistant lines(Ty-3/Ty-3) and 3 homozygous susceptible lines(ty-3/ty-3) were used for PCR *** result showed that homozygous resistant lines produced about 600bp fragment,and homozygous susceptible lines produced about 320bp *** this marker could distinguish resistant and susceptible lines,and was a co-dominant marker tightly linked to Ty-3 *** marker was used to detect 24 important inbred lines and the result showed that all of them did not carry Ty-3 resistant gene.23 individuals of F

关键词： Tomato yellow leaf curl virus Ty-3 gene Molecular marker

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江汉论坛 2021年第4期 55-60页

作者：张子峻湖南大学岳麓书院湖南长沙410006

北宋儒家治理学说有一由治术、治体向道体深化的演进过程。宋初的国家治理偏向使用礼、法等治之“术”,但术的经验性无法确保其普遍与正当。故而,在正当性方面,儒者以仁义道德作为治之“体”,引导治术。在普遍性方面,儒者将道德性之“... 详细信息

北宋儒家治理学说有一由治术、治体向道体深化的演进过程。宋初的国家治理偏向使用礼、法等治之“术”,但术的经验性无法确保其普遍与正当。故而,在正当性方面,儒者以仁义道德作为治之“体”,引导治术。在普遍性方面,儒者将道德性之“体”上达于“道”,展开儒家治理理论的“道体”建构,以因应佛、道对治之术、治之体的挑战。王安石、张载、二程是儒家“道体”理论肇端、深化与奠立过程中的标志性人物。

关键词：礼法理治术治体道体

Study on Fatigue Fracture Period of Metal Pipes under Compound Vibration Loading

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Study on Fatigue Fracture Period of Metal Pipes under Compou...

论古今视阈转换下孝观念的敬顺之变——以《论语》“子游问孝”章的诠释史为例

第三十九届中国控制会议

作者： zijun zhang Chunjian Hua Chaofan Wang School of Mechanical Engineering jiangnan University Jiangsu Key Laboratory of advanced food manufacturing equipment technology Jiangnan University

Aiming at the problems related to the fatigue fracture period of metal pipes under the compound vibration load,an experimental study on metal pipes with V-notches was carried *** compound vibration characteristics of metal pipes are analyzed in detail,and the influence of resonance effects is pointed *** stress concentration effect of metal pipes was analyzed,and the influence of frequency and magnitude of superimposed high-frequency vibration load on the fatigue fracture period of metal tubes was clarifie d,which was based on low frequency vibration *** range of vibration load conditions for crack initiation and smooth propagation of metal pipes is *** experiments were carried out using 45 steel,304 stainless steel and 6061 aluminum alloy with prefabricated V-shaped *** influence of superimposed high-frequency vibration load on the fatigue fracture cycle of the pipe was verified,which was based on the low-frequency vibration load.

关键词： Compound vibration Fatigue fracture cycle Metal pipe Stress concentration

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理论月刊 2019年第2期 53-59页

作者：张子峻湖南大学岳麓书院哲学系湖南长沙410082

中国古代孝观念在历史中,有一由"敬"变异为"顺"的权威化过程,同时,"孝"思想的这一变异也逐渐渗入儒家知识系统领域,表现为思想史演变投射于学说史中。考稽文献,《论语》"子游问孝"章的诠释历史最能透露这一变化趋势。具体而言,古今学者... 详细信息

中国古代孝观念在历史中,有一由"敬"变异为"顺"的权威化过程,同时,"孝"思想的这一变异也逐渐渗入儒家知识系统领域,表现为思想史演变投射于学说史中。考稽文献,《论语》"子游问孝"章的诠释历史最能透露这一变化趋势。具体而言,古今学者对《论语》"子游问孝"章"孝"的"养""敬"内涵,产生了"犬马养人""人养犬马""禽兽相养"三种重要意见。其中,"犬马养人"与"禽兽相养"为诠释的主流,"人养犬马"则古人应之寥寥,但却为今人普遍支持。在古今视阈下审视三说,从诠释文本过渡到诠释行为,可以窥见孝观念的此种异变。今人多以"人养犬马"为解,表征他们对传统孝观念的"敬、养"内容的重新审视以及对孝观念重铸的努力。

关键词：论语子游问孝养敬顺