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Ice bottom evolution derived from thermistor string-based ice mass balance buoy observations

International Journal of Digital Earth 2023年第1期16卷 3085-3104页

作者： Zeliang liao Yubing Cheng Ying Jiang Mengmeng Li bin Cheng Stein Sandven School of Computer Science and Engineering Sun Yat-Sen UniversityGuangzhouPeople’s Republic of China Institute of Atmospheric Physics Chinese Academy of SciencesBeijingPeople’s Republic of China Henan Academy of Big Dat1 Zhengzhou UniversityZhengzhouPeople’s Republic of China Meteorological Department Finnish Meteorological InstituteHelsinkiFinland Acoustic and Oceanography Department Nansen Environmental and Remote Sensing CenterBergenNorway

Digital information on sea ice extent,thickness,volume,and distribution is crucial for understanding Earth's climate *** Snow and Ice Mass Balance Apparatus(SIMBA)is used to determine snow and ice temperatures in Arctic,Antarctic,ice-covered seas,and boreal *** depth and ice thickness are derived from SIMBA temperature regimes(SIMBA_ET and SIMBA_HT).In warm conditions,SiMBA_ET temperature-based ice thickness may have errors due to the isothermal vertical ***_HT provides a visible ice-bottom interface for manual *** propose an unmanned approach,combining neural networks,wavelet analysis,and Kalman filtering(NWK),to mathematically establish NwK and retrieve ice bottoms from various SIMBA_HT *** the Arctic,NWK-derived total thickness showed a bias range of-5.64 cm to 4.01 cm and a correlation coefficient of 95%-99%.For Baltic Sea ice,values ranged from 1.31 cm to 2.41 cm(88%-98%correlation),and for boreal lake ice,-0.7 cm to 2.6 cm(75%-83%correlation).During ice growth,thermal equilibrium,and melting,the bias varied from-3.93 cm to 2.37 cm,-1.92 cm to 0.04 cm,and-4.90 cm to 3.96 cm,with correlation coefficients of 76%-99%.These results demonstrate NWK's robustness in retrieving ice bottom evolution in different water environments.

关键词： Sea ice thickness lake ice thickness ice-bottom evolution nonlinear filtering

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Design of a large momentum acceptance proton therapy gantry utilizing AG-CCT magnets

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Nuclear Science and Techniques 2024年第10期35卷 59-69页

作者： Yi-Cheng liao Xu Liu Wei Wang Zi-Yi Yang Qu-Shan Chen bin Qin State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and TechnologyWuhan 430074China

The application of superconducting(SC)technology enables magnets to excite strong fields with small footprints,which has great potential for miniaturizing proton therapy ***,the slow ramping rate of SC magnets results in a low treatment efficiency compared with normal-conducting(NC)*** address this problem,this study proposes a compact proton therapy gantry design with a large momentum acceptance utilizing alternating-gradient canted-cosine-theta(AG-CCT)SC *** our design,a high-transmission degrader is mounted in the middle of the gantry,and the upstream beamline employs NC magnets with small *** of the degrader,large-bore AG-CCT magnets with strong alternating focusing gradients are set symmetrically as a local achromat,which realizes a momentum acceptance of 20%(or 40%in the energy domain).Therefore,only three magnetic working points are required to cover a treatment energy of 70-230 Me *** to the large momentum acceptance,the proton beam after the degrader can be directly delivered to the isocenter without truncating its energy spectrum,which can significantly increase the treatment efficiency but causes severe dispersion effects during pencil beam ***,a compensation method was introduced by tuning the normal and skewed quadrupoles during the scanning *** a result,the new gantry not only presents a remarkable reduction in the size and weight of the facility but also shows good potential for fast treatment.

关键词： Alternating-gradient canted-cosine-theta magnets Large momentum acceptance gantry Pencil beam scanning Proton therapy

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Quantitative Research on Dissolving of Nb in High Nb Microalloyed Steels during Reheating

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Journal of Iron and Steel Research International 2014年第6期21卷 596-599页

作者： Ya-bin CAO Fu-ren XIAO Gui-ying QIAO Bo liao School of Materials Science and Engineering Shijiazhuang Tiedao University Key Laboratory of Metastable Materials Science and Technology College of Materials Science and EngineeringYanshan University School of Environmental and Chemical Engineering Yanshan University

The accurate prediction of soluble Nb content during reheating is helpful for the design of chemical compo sition and reheating parameters for Nb-containing steels. The dissolution behavior of Nb in high Nb mieroailoyed steels was investigated. The results show that Nh does not entirely dissolve for high Nb microalloyed steels containing Ti after holding at 1 300 ℃ for 3 h. The soluble Nb content increases with the decrease of C content and/or the increase of Nb content in steels. Moreover, an expression has been established to describe the amount evolution of soluble Nb in high Nb microalloyed steels during reheating and the validity of this expression has also been verified by experiment.

关键词： quantitative research high Nb microalloyed steel dissolving soluble Nb modeling

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Influences of immersion bathing in Bacillus velezensis DY-6 on growth performance,non-specific immune enzyme activities and gut microbiota of Apostichopus japonicus

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Journal of Oceanology and Limnology 2019年第4期37卷 1449-1459页

作者： WANG Jinyan LI bin WANG Yingeng liao Meijie RONG Xiaojun ZHANG Zheng Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao National Laboratory for Marine Science and Technology Laboratory for Marine Fisheries Science and Food Production Processes Qingdao 266071 China Shanghai Ocean University Shanghai 201306 China

In this study, the influences of immersion bathing in different concentrations of Bacillus velezensis DY-6 on the body weight gain rate and non-specific immune enzyme activities of the coelom fluid of sea cucumber (Apostichopus japonicus) were determined in order to obtain the optimum bacterial concentration. The gut microbiota change in A. japonicus was then analyzed through high-throughput sequencing during the immersion bathing in B. velezensis DY-6 at the optimum concentration for 49 d. The results illustrate that the body weight growth rate of all bathing groups was higher than that of the control. The highest growth rate (25.3%) was achieved when the bacterial concentration was 1×10^3 CFU/mL. The activities of non-specific immune enzymes (ACP, AKP, SOD and LZM) of all bathing groups increased, and the activities of the enzymes of groups bathed with the bacterium at 1×10^3 and 1×10^4 CFU/mL reached the highest on day 21 and day 28. Taking the growth rate and economic cost into consideration, the optimum concentration of B. velezensis DY-6 was 1×10^3 CFU/mL. The influences of immersion bathing in B. velezensis DY-6 at 1×10^3 CFU/mL on the gut microbiota of A. japonicus were then evaluated through 16S rDNA sequencing analysis. Results showed that the gut microbiota changed with the addition of B. velezensis DY-6, and the richness and diversity of the gut microbiota peaked twice on day 14 and day 21, respectively. In association with the non-specific immune enzyme activities and if day 28 was selected as the dividing point, the community structure of the gut microbiota could be obviously divided into two types. The correlation analysis revealed that the non-specific immune enzyme activities were correlated significantly to some gut bacteria (in the phyla Firmicutes, Proteobacteria, and Bacteroidetes) after immersion bathing in B. velezensis DY-6. Our findings will provide the theoretical foundation for probiotic application in sea cucumber farming.

关键词： Apostichopus japonicus Bacillus velezensis non-specific immune enzyme gut microbiota correlation

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美国儿童阅读推广机制调研及其对我国的启示

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大学图书情报学刊 2025年第1期43卷 137-144页

作者：廖颖深圳市南山区图书馆 518000

儿童阅读推广服务不仅是图书馆服务的重点领域,也是其发展的关键环节。文章采用网络调研与文献分析法,系统梳理和分析了美国公共图书馆在儿童阅读推广方面的策略和实践。研究重点包括美国公共图书馆儿童服务的政策框架、实施策略、社会... 详细信息

儿童阅读推广服务不仅是图书馆服务的重点领域,也是其发展的关键环节。文章采用网络调研与文献分析法,系统梳理和分析了美国公共图书馆在儿童阅读推广方面的策略和实践。研究重点包括美国公共图书馆儿童服务的政策框架、实施策略、社会参与、数字化融合、分级阅读推广情况与方式。研究表明,美国通过政策支持、多元化服务模式、紧密的社区与家庭合作、积极适应数字化转型以及注重儿童分级阅读推广等措施,有效满足了儿童的多元化阅读需求,进而提出构建全面的政策框架、深化社区及家庭参与、积极实施分级阅读策略、拥抱数字化转型等建议,以期推动我国儿童阅读推广高质量可持续性发展。

关键词：数字化转型儿童阅读推广实施策略多元化阅读政策框架可持续性发展家庭参与图书馆服务

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Stable isotope(δ^(13)C_(ker),δ^(13)C_(carb),δ^(18)O_(carb)) distribution along a Cambrian outcrop section in the eastern Tarim Basin,NW China and its geochemical significance

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Geoscience Frontiers 2017年第1期8卷 163-170页

作者： Hu Liu Zewen liao Haizu Zhang Yankuan Tian bin Cheng Shan Yang State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Sichuan Key Laboratory of Shale Gas Evaluation and Exploitation Chengdu 610091China Research Institute of Petroleum Exploration and Development PetroChina Yarim Oilfield CompanyKorla 841000XinjiangChina

This study investigated the geochemical features of the lower Paleozoic strata of Yaerdang Mountain outcrop along with the core samples from well TD2∈ in the eastern Tarim Basin,NW *** total organic carbon abundance,hydrocarbon-generating precursor biospecies,and stable isotope ratios of organics and carbonate（δ13Cker,δ13Ccarb and δ18Ocarb） were comprehensively studied for their possible correlative constraints during sedimentary *** results revealed that the δ13Cker（VPDB） of Cambrian kerogens along the outcrop section varied from-34.6‰ to-28.4‰,indicating an increasing tendency from the lower Cambrian to the upper *** was on the whole accompanied by the variation in the δ13Ccarb and δ18Ocarb along the profile,which might be associated with the changes in the sea level and also in the compositional variation of benthic and planktonic *** large variation in the stable carbon isotope ratios up to 6‰ along the outcrop section reflected the heterogeneity of the Cambrian source rocks from the eastern Tarim ***,the 13C-enriched crude oils from well TD2∈might have been derived from a localized stratum of Cambrian source *** results from this study showed the possibility of multiple source kitchens in the Cambrian-lower Ordovician portion of Tarim Basin.

关键词： Kerogen Heterogeneity Tarim Basin Stable isotope geochemistry

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A New Diagnostic Method Applied to Gearbox Missing Gear Faults——LOD-ICA

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Energy Engineering 2022年第3期119卷 1219-1238页

作者： Lida liao Bo Xiao Kan Huang bin Huang Kang Zhang Changsha University of Science&Technology Changsha410114China China Construction Eighth Engineering Bureau Limited Tianjin200122China University of South Australia AdelaideSA 369977Australia

With the increasingly stringent requirements for carbon emissions,countries have increased the scale of clean energy use in recent *** an important new clean energy source,the ratio of wind power in energy utilization has been *** horizontal axis wind turbine is the main form of wind power generation,which is subject to random wind loads during operation and is prone to various failures after a long period of operation,resulting in reduced power generation efficiency or even *** order to ensure stable external power transmission,it is necessary to perform fault diagnosis for wind ***,the traditional time-frequency analysis method is *** paper proposes a new LOD-ICA method to realize the resolution of the vibration signals mode mixing problem incorporated the merits of both *** LOD-ICA method and the LOD method based on noise-assisted analysis decompose the same signal to produce different signal *** feasibility of the LOD-ICA method was verified by comparing the correlation coefficients between each of the signal components generated by the two methods and the original *** the field of wind turbine fault diagnosis,the LOD-ICA method is employed to the fault characteristics of gearboxes to extract the fault signs of vibration signals,further demonstrated the superiority of the LOD-ICA method in processing vibration signals of rotating machinery.

关键词： LOD method based on noise-assisted analysis fast ICA method gearbox feature extraction

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Aerosolized STAT1 Antisense Oligodeoxynucleotides Decrease the Concentrations of Inflammatory Mediators in Bronchoalveolar Lavage Fluid in Bleomycin-Induced Rat Pulmonary Fibrosis

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Cellular & Molecular Immunology 2008年第3期5卷 219-224页

作者： Ming Zeng bin liao Chen Zhu Wenjun Wang Xiaoqin Zhan Xianming Fan The Department of Respiratory Medicine Affiliated Hospital of Luzhou Medical College Luzhou 646000 China The Department of Cardiothoracic Surgery Affiliated Hospital of LuzhouMedical College Luzhou 646000 China Department of Respiratory Medicine Affiliated Hospital of Luzhou Medical College Luzhou 646000 China.

It has been demonstrated that alveolar macrophages （AMs） play a key role in the pathogenesis of pulmonary fibrosis by releasing a variety of cytokines and inflammatory mediators. In addition, abnormal signal transducer and activator of transcription-1 （STAT1） activation in AMs may play a pivotal role in the process of alveolitis and pulmonary fibrosis. In this study, we transfected STAT1 antisense oligodeoxynucleotide （ASON） into rats by aerosolization, and then investigated the effect of STAT1 ASON on inflammatory mediators such as TGF-β, PDGF and TNF-α in bronchoalveolar lavage fluid （BALF） from rats with bleomycln （BLM）-induced rat pulmonary fibrosis. Our results showed that STAT1 ASON by aerosolization could enter into lung tissues and AMs. STAT1 ASON could inhibit mRNA and protein expressions of STAT1 and ICAM-1 in AMs of rat with pulmonary fibrosis, and had no toxic side effect on liver and kidney. Aerosolized STAT1 ASON could ameliorate the alveolitis through inhibiting the secretion of inflammatory mediators in BLM-induced rat pulmonary fibrosis. These results suggest that aerosolized STAT1 ASON might be considered as a promising new strategy in the treatment of pulmonary fibrosis.

关键词： pulmonary fibrosis STAT1 ASON aerosolization inflammatory mediator

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Graph Convolutional Network-Based Repository Recommendation System

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 175-196页

作者： Zhifang liao Shuyuan Cao bin Li Shengzong Liu Yan Zhang Song Yu School of Computer Science and Engineering Central South UniversityChangshaChina School of Information Technology and Management Hunan University of Finance and EconomicsChangshaChina School of Engineering and Built Environment Glasgow Caledonian UniversityGlasgowUK

GitHub repository recommendation is a research hotspot in the field of open-source software. The current problemswith the repository recommendation systemare the insufficient utilization of open-source community informationand the fact that the scoring metrics used to calculate the matching degree between developers and repositoriesare developed manually and rely too much on human experience, leading to poor recommendation results. Toaddress these problems, we design a questionnaire to investigate which repository information developers focus onand propose a graph convolutional network-based repository recommendation system (GCNRec). First, to solveinsufficient information utilization in open-source communities, we construct a Developer-Repository networkusing four types of behavioral data that best reflect developers’ programming preferences and extract features ofdevelopers and repositories from the repository content that developers focus on. Then, we design a repositoryrecommendation model based on a multi-layer graph convolutional network to avoid the manual formulation ofscoringmetrics. Thismodel takes the Developer-Repository network, developer features and repository features asinputs, and recommends the top-k repositories that developers are most likely to be interested in by learning theirpreferences. We have verified the proposed GCNRec on the dataset, and by comparing it with other open-sourcerepository recommendation methods, GCNRec achieves higher precision and hit rate.

关键词： Repository recommendation graph convolutional network open-source software GitHub

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Optimization of Protectant, Salinity and Freezing Condition for Freeze-Drying Preservation of Edwardsiella tarda

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Journal of Ocean University of China 2017年第5期16卷 831-839页

作者： YU Yongxiang ZHANG Zheng WANG Yingeng liao Meijie LI bin XUE Liangyi College of Marine Sciences Ningbo University Laboratory for Marine Fisheries Science and Food Production Processes Yellow Sea Fisheries Research InstituteChinese Academy of Fishery Sciences

Novel preservation condition without ultra-low temperature is needed for the study of pathogen in marine fishes. Freeze-drying is such a method usually used for preservation of terrigenous bacteria. However, studies using freeze-drying method to preserving marine microorganisms remain very limited. In this study, we optimized the composition of protectants during the freeze-drying of Edwardsiella tarda, a fish pathogen that causes systemic infection in marine fishes. We found that the optimal composition of protectant mixture contained trehalose(8.0%), skim milk(12.0%), sodium citrate(2.0%), serum(12.0%) and PVP(2.0%). Orthogonal and interaction analyses demonstrated the interaction between serum and skim milk or sodium citrate. The highest survival rate of E. tarda was observed when the concentration of Na Cl was 10.0, 30.0 and between 5.0 and 10.0 g L^(-1) for preparing TSB medium, E. tarda suspension and protectant mixture, respectively. When E. tarda was frozen at-80℃ or-40℃ for 6 h, its survival rate was higher than that under other tested conditions. Under the optimized conditions, when the protectant mixture was used during freeze-drying process, the survival rate(79.63%–82.30%) of E. tarda was significantly higher than that obtained using single protectant. Scanning electron microscopy(SEM) image indicated that E. tarda was embedded in thick matrix with detectable aggregation. In sum, the protectant mixture may be used as a novel cryoprotective additive for E. tarda.

关键词： tarda pathogen citrate preservation preserving contained preparing thick additive suspended

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