structural

摘要： The present study modified potato protein and flour with tyrosinase to promote the diversification of potato staple foods.The results indicated that tyrosinase treatment markedly altered the secondary structure of proteins.After tyrosinase treatment,the maximum decomposition temperature of potato protein and flour increased from 322.32 to 332.40°C and from 294.24 to 299.61°C,respectively.Tyrosinase treatment remarkably reduced the pasting viscosity of potato flour,that is,the peak viscosity,through reducing viscosity,breakdown,final viscosity,and setback by 32.50,60.98,13.04,68.24,and 74.31%,respectively.In contrast,tyrosinase treatment increased the shear resistance and hardness of the protein and flour gels;the maximum stress values of the protein and flour gels increased from 1.48 to 10.1% and from 6.87 to 14.8%,respectively.Furthermore,tyrosinase treatment promoted viscoelastic properties and structural stability of potato protein and flour.These results may provide an important foundation for the development of novel potato staple foods.

摘要： Magnesium (Mg) is one of the most plentiful elements in the Earth’s crust and seawater. It possesses low density, high specific strength, high standard potential, and good biocompatibility. In addition, magnesium hydride shows the highest energy density of all reversible metallic hydrides applicable for hydrogen storage. These unique features make Mg and its alloys a class of very promising material for structural and functional applications pertaining to aerospace, transportation, and biomedical and energy sectors. Wide applications of Mg alloys are thus deemed to significantly contribute to the ever-increasing environmental problems and energy challenges in the worldwide.

摘要： Environmental loads that act on marine structures are highly non-deterministic in general.Estimating these loads is a basic requirement for their structural design,but their response is far beyond just counteracting the loads[1,2].The marine environment poses more challenges starting from the choice of material,structural form,design meth­ods,construction techniques,inspection methods,repair,and retrofitting.

摘要： Natural loess slopes are characterized by a strong geological structure,which is an important factor in maintaining slope stability.The magnitude and duration of the earthquake may disturb the soil structure at different levels degrees,locally changing the arrangement between soil particles.The process of rainfall humidification weakens the cementation between soil particles,and the disturbance and humidification change the structural state of the soil,which in turn causes sliding of the slope along with the decay of soil mechanical properties.As slope instability is often the result of a series of post-earthquake ripple effects,it is of great scientific significance to study the mechanism of slope instability due to the structural decay of earthquake-damaged loess exacerbated by rainfall.In this paper,the impact of structural decay of loess on slope stability is simulated by GEOSTUDIO software under three conditions:pre-earthquake rainfall,post-earthquake rainfall and earthquake,taking the landslide in Buzi Village,Min County,Gansu Province as an example.The comparative analysis of the calculation results shows that the structural properties of the slope without earthquake disturbance are influenced by infil-tration amount.When it is fully saturated,the structural properties are similar to those of saturated soil,and the safety factor is reduced by 12.9%.In addition,the earthquake intensity and duration have different degrees of structural damage to the soil.When the structure is fully damaged,it is similar to that of remodelled soil,and the safety factor is reduced by 45.84%.Notably,the process of the earthquake and the following humidification generates the most serious damage to the loess structure,with a reduction in the safety factor of up to 56.15%.The quantitative analysis above obviously illustrates that the post-earthquake rainfall causes the most severe damage to structural loess slopes,and the resulting landslide hazard should not be underestimated.

摘要： In offshore structures,hydrocarbon fires cause the structure to loose its rigidity rapidly and this leads to structural integrity and stability problems.The Passive Fire Protection(PFP)system slows the transfer rate of fire heat and helps to prevent the collapse of structures and human losses.The vital design factors are decided in the detailed design stage.The determined design thickness must be accurately applied in the fabrication yard.However,there are many cases that the PFP is overused because of various reasons.This excessive application of the PFP is an unavoidable problem.Several studies have been conducted on the efficient application and optimal design of the PFP.However,the strength of the PFP has not been considered.In addition,research studies on the correlation between the thickness of the PFP and the structural behaviour are not widely available.Therefore,this study attempts to analyse the thermal and mechanical effects of the PFP on the structure when it is applied to the structural member.In particular,it is intended to determine the change in the behaviour of the structural member as the thickness of the PFP increases.

摘要： Dear editor,Vehicle re-identification aiming to match vehicle images captured by different cameras plays an essential role in video surveillance systems for public security.However,vehicle re-identification is a challenging computer vision problem because vehicle images usually contain a list of adverse factors,such as viewpoint variations,blurs,and occlusions.Therefore,how to design an effective vehicle re-identification method has received increasing attention.

摘要： Professor Xiuwen Han is the founder and pioneer of Nuclear Magnetic Resonance(NMR)spectroscopy in Dalian Institute of Chemical Physics,the Chinese Academy of Sciences(DICP,CAS).She has long consistently been engaged in the field of NMR spectroscopy,structural chemistry,and catalytic chemistry,and has made fruitful achievements in the structural analysis of organic compounds,natural products,biomolecules,homogeneous and heterogeneous catalysts.

摘要： In November 2020,BWX Technologies,based in Lynchburg,VA,USA,announced it had once again begun manufacturing a nuclear fuel known as tristructural isoptropic(TRISO)particles[1].The company,which is designing a mobile reactor that will run on the fuel[2],is not the only nuclear firm that is betting on the future of TRISO.At least three other US companies have incorporated it into their advanced reactor designs[3,4].

摘要： Structural health monitoring(SHM)is a process of implementing a damage detection strategy in existing structures to evaluate their condition to ensure safety.The changes in the material,geometric and/or structural properties affect structural responses,which can be captured and analyzed for condition assessment.Various vibration-based damage detection algorithms have been developed in the past few decades.Among them,wavelet transform(WT)gained popularity as an efficient method of signal processing to build a framework to identify modal properties and detect damage in structures.This article presents the state-of-the-art implementation of various WT tools in SHM with a focus on civil structures.The unique features and limitations of WT,and a comparison of WT and other signal processing methods,are further discussed.The comprehensive literature review in this study will help interested researchers to investigate the use of WT in SHM to meet their specific needs.