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浅埋下穿隧道上部建筑物安全监测实践

建材世界 2017年第3期38卷 49-52页

作者：王爱军钱锐贺国宇郭若枭谭海武汉理工大学资源与环境工程学院武汉430070 中建七局交通公司湖北事业部武汉430200 中铁二十四局南昌铁路工程有限公司南昌330000

为了确保下穿隧道施工时上部建筑物的安全稳定,需要对建筑物的变形进行监测,通过监测结果来反馈与指导施工,直至所采用的施工方案能确保建筑物的安全。针对福州至平潭铁路岱岭隧道下穿福州外语外贸学院隧道工程,使用精密水准仪对上部建... 详细信息

为了确保下穿隧道施工时上部建筑物的安全稳定,需要对建筑物的变形进行监测,通过监测结果来反馈与指导施工,直至所采用的施工方案能确保建筑物的安全。针对福州至平潭铁路岱岭隧道下穿福州外语外贸学院隧道工程,使用精密水准仪对上部建筑物进行沉降监测;使用全站仪对上部建筑物进行倾斜监测。通过为期四个月的共22次的观测得到建筑物最大累计沉降为4.3mm,在后期监测时出现上升现象,致使最终累计沉降为3.5 mm;隧道开挖之前建筑物已存在最大倾斜0.268%,在隧道开挖后倾斜最大增加值为0.147%。

关键词：浅埋隧道隧道掘进监测方法建筑物变形

Automatic spectrum recognition system for charge state analysis in electron cyclotron resonance ion sources

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Nuclear Science and Techniques 2023年第11期34卷 199-211页

作者： rui Wang Cheng qian Yu‑Hui guo Peng Zhang Jin‑Dou Ma Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

The Electron Cyclotron Resonance(ECR)ion source is a critical device for producing highly charged ion beams in various *** the charge-state distribution of the ion beams is essential,but the manual analysis is labor-intensive and prone to inaccuracies due to impurity *** automatic spectrum recognition system based on intelligent algorithms was proposed for rapid and accurate chargestate analysis of ECR ion *** system employs an adaptive window-length Savitzky-Golay(SG)filtering algorithm,an improved automatic multiscale peak detection(AMPD)algorithm,and a greedy matching algorithm based on the relative distance to accurately match different peaks in the spectra with the corresponding charge-state ion ***,a user-friendly operator interface was developed for ease of *** testing on the online ECR ion source platform demonstrates that the system achieves high accuracy,with an average root mean square error of less than 0.1 A for identifying charge-state spectra of ECR ion ***,the system minimizes the stand-ard deviation of the first-order derivative of the smoothed signal to 81.1846 *** results indicate the capability of the designed system to identify ion beam spectra with mass numbers less than Xe,including Xe *** proposed automatic spectrum recognition system represents a significant advancement in ECR ion source analysis,offering a rapid and accurate approach for charge-state analysis while enhancing supply *** exceptional performance and successful imple-mentation of the proposed system on multiple ECR ion source platforms at IMPCAS highlight its potential for widespread adoption in ECR ion source research and applications.

关键词： ECRIS Spectrum recognition SG filtering AMPD algorithm Greedy algorithm

Uncertainty Analysis of Seepage-Induced Consolidation in a Fractured Porous Medium

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Computer Modeling in Engineering & Sciences 2021年第10期129卷 279-297页

作者： Lingai guo Marwan Fahs Hussein Hoteit rui Gao qian Shao School of Civil Engineering Wuhan UniversityWuhan430072China Institut Terre et Environnement de Strasbourg Universite de StrasbourgCNRSENGEESUMR 7063StrasbourgFrance Physical Science and Engineering Division King Abdullah University of Science and TechnologyThuwalSaudi Arabia

Numerical modeling of seepage-induced consolidation process usually encounters significant uncertainty in the properties of geotechnical *** the effect of uncertain parameters on the performance variability of the seepage consolidation model is of critical importance to the simulation and tests of this *** this end,the uncertainty and sensitivity analyses are performed on a seepage consolidation model in a fractured porous medium using the Bayesian sparse polynomial chaos expansion(SPCE)*** uncertain parameters including Young’s modulus,Poisson’s ratio,and the permeability of the porous matrix,the permeability within the fracture,and Biot’s constant are *** SPCE models for displacement,flow velocity magnitude,and fluid pressure at several reference points are constructed to represent the input-output relationship of the numerical *** on these SPCE models,the total and first-order Sobol’indices are computed to quantify the contribution of each uncertain input parameter to the uncertainty of model *** results show that at different locations of the porous domain,the uncertain parameters show different effects on the output *** the beginning of the seepage consolidation process,the hydraulic parameters make major contributions to the uncertainty of the model *** the process progresses,the effect of hydraulic parameters decreases and is gradually surpassed by the mechanical *** work demonstrates the feasibility to apply Bayesian SPCE approach to the uncertainty and sensitivity analyses of seepage-induced consolidation problems and provides guidelines to the numerical modelling and experimental testing of such problems.

关键词： Fractured porous media sensitivity analysis polynomial chaos expansions poroelasticity

Effects of florfenicol exposure on growth,development and antioxidant capacity of flounder Paralichthys olivaceus larvae at different developmental stages

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Journal of Oceanology and Limnology 2020年第2期38卷 550-559页

作者： guo rui ZHANG Yingqi ZHANG Xianyu ZHANG qian CHENG rui MD MOSTAFIZUR Rahman LIU Ying College of Marine Science and Environment Dalian Ocean UniversityDalian 116023China Liaoning Aquacultural Engineering R&D Center Dalian 116023China

Antibiotics are widespread in various environmental media,and may pose a potential threat to aquatic ecosystems and non-target aquatic ***(FLO)is one of the most commonly used antibiotics in aquaculture,and extensively used to substitute chloramphenicol with its strong sterilization and low adverse ef *** this study,flounder Paralichthys olivaceus,an important economic fish species in seawater was used as an experimental *** exposure concentrations of FLO(including environmentrelated concentrations)were set at 0,0.01,0.1,1,and 10 mg/*** fects of FLO exposure for 168 h on growth and development,motor behavior,antioxidant enzyme activity,malondialdehyde(MDA)content,and thyroid hormone level of *** larvae were studied in pre-larvae(1 dpf)and post-larvae(20 dpf).The results show that the short-term FLO exposure could promote the larvae growth to some degrees,but inhibit them as the exposure time *** pre-larvae,FLO at 0.01 mg/L could stimulate the motor nerve system and increase the swimming ability,but inhibited it at 1 mg/*** the increasing dosage of FLO,the superoxide dismutase(SOD)and MDA contents were elevated,reaching the maximum in the 1 mg/L FLO *** pre-larvae were more sensitive than the post-larvae to FLO in the environment,and the growth and immune resistance could be damaged with long ***-larvae were more tolerant to external pollutants,FLO at 1 mg/L could promote the motor behavior and reduce SOD and MDA ***,FLO can be used as an antibiotic at a proper concentration but as a drug to prevent disease in a long-term way.

关键词： florfenicol Paralichthys olivaceus larvae growth and development motor behavior antioxidant capacity

Highly crystallization-induced emissive luminophores with mechanoluminescent features for two-photon harvesting fluorescence imaging and latent fingerprint identification

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Nano Research 2024年第7期17卷 6475-6482页

作者： Jian Lu Juan Gao rui-Xuan qian Shuai-Hua Wang Fa-Kun Zheng guo-Cong guo Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

Fluorescence imaging can be employed in fields of medical treatment,astronomical exploration,and national defense *** fluorescence imaging often takes the single-photon techniques,which is vulnerable to background interference and ***,two-photon fluorescence imaging can achieve much higher-resolution fluorescence imaging for reducing scattering and deeper ***,by assembling the tetraphenylethylene backbones with nontoxic and non-noble K^(+)ions,compound 1([(Hdma)K(H_(2)ettc)]_(n),H_(4)ettc=4',4''',4''''',4'''''''-(ethene-1,1,2,2-tetrayl)tetrakis(([1,1'-biphenyl]-4-carboxylic acid)))with the crystallization-induced emissions exhibited charming fluorescence imaging under two-photon excitation microscopy(TPEM).Besides,luminescent powders based on compound 1 can achieve high-resolution fingerprint recognition,providing secure access control and identification for a novel authentication *** with the commercial fluorescent dyes coumarin-6,the as-synthesized compound 1 showed great solvent stability,indicating its durability against harsh ***,compound 1 shows mechanoluminescent properties for the perturbation of weak supramolecular interactions within ordered arrangements of the H_(2)ettc^(2−)*** novel compound has provided an important insight to the development of twophoton fluorescence imaging and advanced external-stimuli responsive materials.

关键词： crystallization-induced emission fluorescence imaging two-photon absorption fingerprint recognition mechanoluminescence

A note on the Marcinkiewicz integral operators on F_p^(α,q)

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第12期8卷 2037-2040页

作者： ZHANG Chun-jie qian rui-rui Department of Mathematics Zhejiang University Hangzhou 310027 China Sci-Tech Section Zhejiang Sci-Tech University Hangzhou 210018 China

In this paper, we shall prove that the Marcinkiewicz integral operator #n, when its kernel Ω satisfies the L^1-Dini condition, is bounded on the Triehel-Lizorkin spaces. It is well known that the Triehel-Lizorkin spaces are generalizations of many familiar spaces such as the Lehesgue spaces and the Soholev spaces. Therefore, our result extends many known theorems on the Marcinkiewicz integral operator. Our method is to regard the Marcinkiewicz integral operator as a vector valued singular integral. We also use another characterization of the Triehel-Lizorkin space which makes our approach more clear.

关键词： Marcinkiewicz integral Triebel-Lizorkin spaces Fourier transtforms

Identification of Green-Revertible Yellow 3(GRY3),encoding a 4-hydroxy-3-methylbut-2-enyl diphosphate reductase involved in chlorophyll synthesis under high temperature and high light in rice

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The Crop Journal 2023年第4期11卷 1171-1180页

作者： Hongzhen Jiang Anpeng Zhang Banpu Ruan Haitao Hu rui guo Jingguang Chen qian qian Zhenyu Gao China National Rice Research Institute Chinese Academy of Agricultural SciencesHangzhou 310006ZhejiangChina School of Agriculture Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107GuangdongChina Institute of Crop Breeding and Cultivation Shanghai Academy of Agricultural SciencesShanghai 201403China College of Life and Environmental Sciences Hangzhou Normal UniversityHangzhou 311121ZhejiangChina

Chlorophyll,a green pigment in photosynthetic organisms,is generated by two distinct biochemical pathways,the tetrapyrrole biosynthetic pathway(TBP) and the methylerythritol 4-phosphate(MEP)*** is one of the pathways for isoprenoid synthesis in plants,with 4-hydroxy-3-methylbut-2-enyl diphosphate reductase(HDR) catalyzing its last *** this study,we isolated a greenrevertible yellow leaf mutant gry3 in rice and cloned the GRY3 gene,which encodes a HDR participating in geranylgeranyl diphosphate(GGPP) biosynthesis in chloroplast.A complementation experiment confirmed that a missense mutation(C to T) in the fourth exon of LOC_Os03g52170 causes the gry3 *** high temperature and high light,transcript and protein abundances of GRY3 were reduced in the gry3 *** expression of chlorophyll biosynthesis,chloroplast development,and genes involved in photosynthesis were also *** reactive oxygen species accumulation,cell death,and photosynthetic proteins degradation were occurred in the *** content of GGPP was reduced in gry3 compared with Nipponbare,resulting in a stoichiometric imbalance of tetrapyrrolic chlorophyll *** results shed light on the response of chloroplast biogenesis and maintenance in plants to high-temperature and high-light stress.

关键词： Chloroplast High temperature High light Rice

Prediction of alloy composition and microhardness by random forest in maraging stainless steels based on a cluster formula

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Journal of Iron and Steel Research International 2018年第7期25卷 717-723页

作者： Zhen Li Dong-hui Wen Yue Ma QingWang guo-qing Chen rui-qian Zhang rui Tang Huan He School of Mechanical Engineering Dalian University of Technology Dalian 116024 Liaoning China Key Laboratory of Materials Modification by Laser Ion and Electron Beams (Ministry of Education) School of Materials Science and Engineering Dalian University of Technology Dalian 116024 Liaoning China Science and Technology on Reactor Fuel and Materials Laboratory Nuclear Power Institute of China Chengdu 610213 Sichuan China Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials Guangxi University Nanning 530004 Guangxi China

Fe-Ni-Cr-based super-high-strength maraging stainless steels were generally realized by multiple-element alloying under a given heat treatment processing. A series of alloy compositions were designed with a uniform cluster formula of [Ni16Fe192]（Cr32（Ni16-x-y-z-m-n MoxTiyNbzAlmVn））（at.%） that was developed out of a unique alloy design tool, a cluster- plus-glue-atom model. Alloy rods with a diameter of 6 mm were prepared by copper-mold suction-cast processing under the argon atmosphere. These alloy samples were solid-solutioned at 1273 K for 1 h, followed by water-quenching, and then aged at 783 K for 3 h. The effect of the valence electron concentration, characterized with the number of valence electrons per unit cluster （VE/uc） formula of 16 atoms, on microhardness of these designed maraging stainless steels at both solid- solutioned and aged states was investigated. The relationship between alloy compositions and microhardness in maraging stainless steels was firstly established by the random forest （RF, a kind of machine learning methods） based on the experimental results. It was found that not only the microhardness of any given composition alloy within the frame of cluster formula, but also the alloy composition with a maximum microhardness for any given VE/uc, could be predicted in good agreement with the guidance of the relationship by RF. The contributions of minor-alloying elements to the microhardness of the aged alloys were also discussed.

关键词： Maraging stainless steel Composition design Microhardness Valence electron concentration Random forest

Liquid metal-based paper electronics:Materials,methods,and applications

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Science China(Technological Sciences) 2023年第6期66卷 1595-1616页

作者： JIANG ChengJie guo rui Department of Biomedical Engineering Tianjin UniversityTianjin 300072China

The liquid metals exhibit both the properties of liquids and metals and have a low melting point near room *** a lowcost and easy-to-obtain flexible substrate,paper has significant advantages for large-area and multilayer flexible circuit *** has led to a growing interest in liquid metal-based paper electronics among both scientists and *** order to promote the development and application of liquid metal-based paper electronics,this review will summarize and analyze the progress from three perspectives,including liquid metal inks,printing methods,and their applications.A variety of liquid metalbased electronic inks are introduced,and their advantages and disadvantages are ***,a comparison of typical fabrication methods has been presented,including chemical interaction-based selective adhesion and surface roughness-based transfer printing.A number of emerging applications used and expected to be applied to liquid metal-based paper electronics have been ***,paper electronics based on liquid metals are discussed along with their challenges and opportunities for the further *** the future,further investigations and applications of paper electronics based on liquid metals are expected.

关键词： EGain flexible electronics paper electronics health monitoring