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Chinese Chemical Letters 2012年第4期23卷 492-495页

作者： Kang Ma Ya Nan Yang Xiao Xiong Jiang Min Zhao ye qiang cai Division of Chemical Metrology and Analytical Science National Institute of Metrology of ChinaBeijing 100013China Division of Chemical Metrology Jiangsu Institute of MetrologyNanjing 210007China State Ke.v lztbotzltory of Bioactive Substances and Functions of Natural Medicines lnstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

An efficient and accurate analytical method was developed for the simultaneous determination of 20 synthetic food additives, including three sweeteners,seven food colorants,nine synthetic preservatives and caffeine,by high performance liquid chromatography （HPLC） with photodiode array detector（PDA）.This method permits the detection of food additives at very low concentrations（0.005-0.150μg/mL）.The applicability was verified by the determination of food additives present in various foodstuffs.

关键词： Food additives Liquid chromatography Photodiode array detector Drinks

Life-Cycle Bearing Capacity for Pre-Stressed T-beams Based on Full-Scale Destructive Test

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Structural Durability & Health Monitoring 2025年第1期19卷 145-166页

作者： Yushan ye Tao Gao Liankun Wang Junjie Ma Yingchun cai Heng Liu Xiaoge Liu China Construction Seventh Engineering Division Corp. Ltd.Zhengzhou450004China School of Water Conservancy and Transportation Zhengzhou UniversityZhengzhou450001China

To investigate the evolution of load-bearing characteristics of pre-stressed beams throughout their service life and to provide a basis for accurately assessing the actual working state of damaged pre-stressed concrete T-beams,destructive tests were conducted on full-scale pre-stressed concrete *** on the measurement and ana-lysis of beam deﬂection,strain,and crack development under various loading levels during the research tests,combined with the veriﬁcation coefﬁcient indicators speciﬁed in the codes,the veriﬁcation coefﬁcients of bridges at different stages of damage can be *** results indicate that the T-beams experience complete,incom-plete linear,and non-linear stages during the destructive test *** the complete linear elastic stage,both the deﬂection and bottom strain veriﬁcation coefﬁcients comply with the speciﬁcations,indicating a good structural load-bearing capacity no longer adheres to the code’s *** the non-linear stage,both coefﬁcients exhi-bit a sharp increase,resulting in a further decrease in the structure’s load-bearing *** to the pro-visions of the current code,the beam can be in the incomplete linear stage when both values fall within the code’s speciﬁed *** strain veriﬁcation coefﬁcient sourced from the compression zone at the bottom of theﬂange is not recommended for assessing the bridge’s load-bearing capacity.

关键词： Pre-stressed T-beams whole process destructive test bearing capacity veriﬁcation coefﬁcient

A Deep Generative Model with Multiscale Features Enabled Industrial Internet of Things for Intelligent Fault Diagnosis of Bearings

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Research 2023年第3期2023卷 57-68页

作者： He-xuan Hu Yicheng cai qiang Hu ye Zhang Key Laboratory of Water Big Data Technology of Ministry of Water Resources Hohai UniversityNanjing 211100P.R.China College of Computer and Information Hohai UniversityNanjing 211100P.R.China

Effective condition monitoring and fault diagnosis of bearings can not only maximize the life of rolling bearings and prevent unexpected shutdowns caused by equipment failures but also eliminate unnecessary costs and waste caused by excessive ***,the existing deep-learning-based bearing fault diagnosis models have the following *** of all,these models have a large demand for fault ***,the previous models only consider that single-scale features are generally less effective in diagnosing bearing ***,we designed a bearing fault data collection platform based on the Industrial Internet of Things,which is used to collect bearing status data from sensors in real time and feed it back into the diagnostic *** the basis of this platform,we propose a bearing fault diagnosis model based on deep generative models with multiscale features(DGMMFs)to solve the above *** DGMMF model is a multiclassification model,which can directly output the abnormal type of the ***,the DGMMF model uses 4 different variational autoencoder models to augment the bearing data and integrates features of different *** with single-scale features,these multiscale features contain more information and can perform ***,we conducted a large number of related experiments on the real bearing fault datasets and verified the effectiveness of the DGMMF model using multiple evaluation *** DGMMF model has achieved the highest value under all metrics,among which the value of precision is 0.926,the value of recall is 0.924,the value of accuracy is 0.926,and the value of F1 score is 0.925.

关键词： fault bearings diagnosis

Localized Excitations of （2＋1）-Dimensional Korteweg-de Vries System Derived from a Periodic Wave Solution

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Communications in Theoretical Physics 2007年第2期47卷 275-281页

作者： qiang Ji-ye FEI Jin-Xi cai Gui-Ping ZHENG Chun-Long College of Physics and Mathematics Zhejiang Lishui University Lishui 323000 China Biophysics Department Yunnan Agricultural University Kunming 650201 China Institute of Educational Science Wenzhou University Wenzhou 325035 China

With the aid of an improved projective approach and a linear variable separation method, new types of variable separation solutions （including solitary wave solutions, periodic wave solutions, and rational function solutions） with arbitrary functions for （2＋1）-dimensional Korteweg-de Vries system are derived. Usually, in terms of solitary wave solutions and rational function solutions, one can find some important localized excitations. However, based on the derived periodic wave solution in this paper, we find that some novel and significant localized coherent excitations such as dromions, peakons, stochastic fractal patterns, regular fractal patterns, chaotic line soliton patterns as well as chaotic patterns exist in the KdV system as considering appropriate boundary conditions and/or initial qualifications.

关键词： improved projective approach KdV system chaos soliton fractal

Preparation of{200}crystal faced SnO_(2) nanorods with extremely high gas sensitivity at lower temperature

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Rare Metals 2021年第8期40卷 2004-2016页

作者： Hong-Yan Xu Zheng-Run Chen cai-Yun Liu Qin ye Xiao-Peng Yang Jie-qiang Wang Bing-qiang Cao School of Materials Science and Engineering University of JinanJinan250022China

Demand for simple and effective gas sensing sensors is growing rapidly due to the growing threat of triethylamine(TEA).Semiconductor tin oxide(SnO_(2))is one of the most widely used sensing materials for metal oxide gas *** recent years,a lot of binary ternary compound researches have been carried *** this paper,five different SnO_(2) samples were synthesized by simple synthesis method to understand the internal relationship and obtain different gas sensing *** on the low temperature nitrogen adsorption tests and the atomic arrangement model,it can be inferred that different exposed surfaces play a key role in TEA sensing *** addition,the TEA sensing activity relationship of SnO_(2) exposed crystal faces is proposed as listed:(200)>(101)>(110).

关键词： SnO_(2)gas sensor Exposed crystal faces Atomic arrangement TEA sensing properties

定向电场下W_(6)C_(6)团簇的超卤素调制及非线性光学特性

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原子与分子物理学报 2025年第3期42卷 72-76页

作者：蔡璧钧段宇静魏强重庆理工大学理学院重庆400050

本文采用密度泛函(DFT)方法研究了定向外电场(OEEF)对W_(6)C_(6)团簇几何结构、电子性质以及非线性光学响应(NLO)的影响.计算结果表明W_(6)C_(6)的结构在一定OEEF强度下可以保持稳定.OEEF可以增大W_(6)C_(6)团簇的电子亲和能(EA值),且... 详细信息

本文采用密度泛函(DFT)方法研究了定向外电场(OEEF)对W_(6)C_(6)团簇几何结构、电子性质以及非线性光学响应(NLO)的影响.计算结果表明W_(6)C_(6)的结构在一定OEEF强度下可以保持稳定.OEEF可以增大W_(6)C_(6)团簇的电子亲和能(EA值),且在特定强度下,OEEF可以将W_(6)C_(6)团簇转变为超卤素.通过对EA值的非线性拟合可以实现对W_(6)C_(6)团簇的连续调制.进一步对不同外电场下W_(6)C_(6)团簇的最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)能级进行分析,发现OEEF降低了W_(6)C_(6)团簇LUMO能级是其EA值增大的主因.此外,OEEF可以显著增大W_(6)C_(6)团簇的平均极化率和第一超极化率,尤其是第一超极化率,改变其非线性光学性质.

关键词：定向外电场超原子密度泛函理论 NLO W_(6)C_(6)团簇

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Ultra-stable carbon-coated sodium vanadium phosphate as cathode material for sodium-ion battery

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Rare Metals 2022年第1期41卷 115-124页

作者： Di Wang Peng cai Guo-qiang Zou Hong-Shuai Hou Xiao-Bo Ji ye Tian Zhen Long Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional CrystalTianjin University of TechnologyTianjin 300384China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

Based on the excellent sodium ion mobility of sodium superionic conductor structures,Na_(3)V_(2)(PO_(4))_(3)materials have become promising cathode materials in sodium-ion batteries(SIBs).However,inadequate electronic transport of Na_(3)V_(2)(PO_(4))_(3)limits the cycling stability and rate performances in *** this work,high-performance conductive carbon-coated Na_(3)V_(2)(PO_(4))_(3)materials are obtained via a simple and facile ball-milling assisted solid-state method by utilizing citric acid as carbon *** carbon-coated composite electrodes display a high initial specific capacity of 111.6 mAh·g^(-1),and the specific capacity could retention reach 92.83%after 100 cycles at 1C with the high coulombic efficiency(99.95%).More importantly,the capacity of conductive carbon-coated nano-sized Na_(3)V_(2)(PO_(4))_(3)can remain 48.5 mAh·g^(-1) at 10℃after 3000 cycles(initial capacity of 101.2 mAh·g^(-1)).At the same time,high coulombic efficiency(near 100%)has little decay even at a high rate of 20℃during 1000 cycles,demonstrating the excellent cycling stability and remarkable rate performances,and showing potential in largescale productions and applications.

关键词： Na_(3)V_(2)(PO_(4))_(3) Sodium superionic conductor structures Ball-milling Cathode Sodium-ion battery

Multi-boiler System Optimization in Integrated Steelworks Based on Decomposition and Coordination Method

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Journal of Iron and Steel Research International 2015年第3期22卷 226-231页

作者： Guang-yu MA Wen-qiang SUN Wei-dong LI Zhu ye Jiu-ju cai Institute of Thermal and Environmental Engineering Northeastern University Ansteel Research Institute of Iron and Steel Anshan Iron and Steel Group Corporation

As for the existing problems of boilers in integrated steelworks, the multi-boiler system could be quantitatively optimized with the decomposition and coordination method. Then, case studies were carried out based on the data of an integrated steelworks. Two groups of actual production records were contrastively analyzed, and the calculation results from the optimized program of these two groups indicated that for groups 1 and 2, the costs fall by 5.06% and 3.79%and the fuel consumptions decrease by 2.72% and 1.45%, respectively, compared with the actual data. To analyze the cost and fuel consumption change under the same condition of total load demand, assigned fuel consumption and water temperature, five sets of data were selected for further analysis. It was shown that the total cost and fuel consumption of the optimized program could fall by 3.5% and 1.6% respectively, compared with the actual production records. The optimal allocation significantly contributed to energy conservation and cost reduction. The effects of the system energy conservation cannot be realized by single equipment energy conservation. They were complementary to each other, and should be put on the same stage.

关键词： boiler self-owned power plant integrated steelworks decomposition and coordination method

Design of infrared camouflage cloak for underground silos

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Defence Technology（防务技术） 2020年第1期16卷 43-49页

作者： Luo Zhang qiang Zhang Hong ye Department of Thermal Science and Energy Engineering University of Science and Technology of ChinaHefei 230027PR China

The temperature difference between the exposed surface of an underground silo and the surrounding soil surface is significant,which means a silo can be easily found by infrared *** designed an infrared camouflage cloak consisting of an imitative layer and an insulation layer for the *** imitative layer is used to imitate the thermal response of the soil to the surrounding *** insulation layer is used to weaken the impact of the internal temperature field of the silo on the lower boundary of the imitative layer.A silo model including surrounding soil and a soil model without silo were established,and the influences of the material and thickness of each layer on the infrared camouflage effect were *** results show that when using a silicone rubber containing alumina powder with a volume fraction of 3.18% as the imitative material,its thermal inertia is in consistent with that of the ***,it was found that the thickness of the imitative layer doesn't need to be greater than its thermal penetration depth to achieve the infrared camouflage,and the absence of the insulation layer will cause hot spots on the silo surface in winter to weaken the camouflage *** optimized thicknesses of the imitative layer and the insulation layer are 22 cm and 4 cm re *** simulations indicate that with the application of the cloak,the maximum value of the absolute values of the temperature differences between the average temperatures of the silo surface and the surrounding soil surface temperatures drops from 1,59℃ to 0.31℃ in summer and from 1.92℃ to 0.21℃ in *** designed cloak can achieve an all-weather and full-time passive infrared camouflage.

关键词： Underground silo Infrared camouflage cloak Imitative layer Insulation layer

Artificial Intelligence-Based Image Reconstruction for Computed Tomography: A Survey

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Intelligent Automation & Soft Computing 2023年第6期36卷 2545-2558页

作者： Quan Yan Yunfan ye Jing Xia Zhiping cai Zhilin Wang qiang Ni College of Computer National University of Defense TechnologyChangsha410073China Technical Service Center for Vocational Education National University of Defense TechnologyChangsha410073China School of Computing and Communications Lancaster UniversityLancasterLA14WAUK

Computed tomography has made significant advances since its intro-duction in the early 1970s,where researchers have mainly focused on the quality of image reconstruction in the early ***,radiation exposure poses a health risk,prompting the demand of the lowest possible dose when carrying out CT *** acquire high-quality reconstruction images with low dose radiation,CT reconstruction techniques have evolved from conventional reconstruction such as analytical and iterative reconstruction,to reconstruction methods based on artificial intelligence(AI).All these efforts are devoted to con-structing high-quality images using only low doses with fast reconstruction *** particular,conventional reconstruction methods usually optimize one aspect,while AI-based reconstruction has finally managed to attain all goals in one ***,there are limitations such as the requirements on large datasets,unstable performance,and weak generalizability in AI-based reconstruction *** work presents the review and discussion on the classification,the commercial use,the advantages,and the limitations of AI-based image reconstruction methods in CT.

关键词： Computed tomography image reconstruction artificial intelligence