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Acta Oceanologica Sinica 2012年第2期31卷 16-24页

作者： xue Cunjin DONG qing XIE Jiong Key Laboratory of Digital Earth Science Center for Earth Observation and Digital EarthChinese Academy of SciencesBeijing 100094China State Key Laboratory of Resource and Environment Information System Institute of GeographicalScience and Natural ResourcesChinese Academy of SciencesBeijing 100101China

Spatio-temporal semantics based on ＂object views＂ or ＂event views＂ has few abilities to represent and model the continuity and gradual oceanic phenomena or objects, which seriously limits the specific marine applications and knowledge discovery and data mining, so this paper proposes a hierarchical abstraction semantics with ＂marine spatio-temporal process-life span phases-evolution sequences--state units＂ and process objects included by level with ＂marine process objects--phase objects--sequence object---state objects＂ with the oceanic process characteristics into the marine process semantics. In addition, this paper designs the storage and representation of marine process objects using the backus normal forms （BNF） and abstract data type （ADT）. Base on E1 Nifio Southern Oscilation （ENSO） index and Chinese rain gauging station data, this paper also gives a case of study. The spatio-temporal analysis between ENSO process and Chinese rainfall anomalies shows that the marine spatio-temporal semantics not only can illustrate the spatial distribution of Chinese rainfall anomalies in different time scales at ENSO process, life span phases and state units, but also analyze the dynamic changes of Chinese rainfall anomalies in different life span phases or state units within ENSO evolution.

关键词： marine process semantics hierarchical abstraction and inclusion by level ENSO proc ess rainfall anomalies

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粗壮女贞功效成分的含量测定和超声提取工艺

医药导报 2025年第1期44卷 96-102页

作者：梁小娜陈雪韦红宇吴青陆世惠右江民族医学院药学院百色533000 广西壮族自治区中药体内药物化学数据库建设与应用工程研究中心百色533000 广西高校右江流域特色民族药研究重点实验室百色533000

目的建立紫外分光光度法(UV)测定粗壮女贞功效成分(肉桂酸衍生物、总黄酮)含量,并基于UV/高效液相色谱(HPLC)预测其中的反式对羟基肉桂酸及其酯、野漆树苷的含量,同时优化其超声提取工艺条件。方法①在粗壮女贞功效成分的含量测定中,用... 详细信息

目的建立紫外分光光度法(UV)测定粗壮女贞功效成分(肉桂酸衍生物、总黄酮)含量,并基于UV/高效液相色谱(HPLC)预测其中的反式对羟基肉桂酸及其酯、野漆树苷的含量,同时优化其超声提取工艺条件。方法①在粗壮女贞功效成分的含量测定中,用双波长等吸收点UV法(检测波长316 nm,参比波长268 nm)测定肉桂酸衍生物总含量,单波长UV法(检测波长268 nm)测定总黄酮含量,HPLC法(C 18色谱柱,甲醇-0.1%醋酸溶液=40:60洗脱,检测波长310 nm)测定野漆树苷等的含量;②用转换因子建立基于UV/HPLC的预测模型,并以另外3个测试样本检验预测结果的准确性;③用正交实验法优化超声提取工艺条件。结果①肉桂酸衍生物、总黄酮、野漆树苷的线性范围分别为4.64~20.88、8.24~28.84、5.15~51.50μg·mL^(-1)(r≥0.9995),精密度、稳定性、重复性实验的相对标准偏差(RSD)≤1.4%,加样回收率97.9%~100.5%(RSD≤1.2%,n=6);②UV/HPLC预测值与HPLC实测值相对误差-5.3%~1.7%,反式对羟基肉桂酸、野漆树苷含量的预测值与实测值差异无统计学意义(P>0.05);③超声提取粗壮女贞的最佳工艺条件为乙醇浓度80%、温度50℃、液料比20 mL·g^(-1)、提取2次、提取20 min,在该条件下功效成分总产率为42.0%。结论建立的含量测定方法准确、快速,提取方法高效、节能、省时,为粗壮女贞的质量控制和开发利用提供了实验依据。

关键词：粗壮女贞功效成分含量测定提取工艺

NUMERICAL RESEARCHES ON INTERACTION BETWEEN PROPELLERS IN UNIFORM FLOW

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Journal of Hydrodynamics 2012年第5期24卷 675-683页

作者： FENG xue-mei LU Chuan-jing WUQiong CAI Rong-quan School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai 200240China Marine Design and Research Institute of China Shanghai 200011 China

Numerical simulations of the flow around two bidirectional staggered propellers are conducted in uniform flow. The computed open water performance of the fore-propeller is compared with the corresponding experimental results, and the influence of the fore-propeller on the aft one is carefully investigated. It is found that the inflow around the aft propeller close to the side of the fore is especially affected by the fore one, leading to abnormal circumferential distribution of force on the blade in the shade region. For either forces or velocity distributions, the abnormal changes behave contrarily for cases with the rotating speed larger or smaller than the idle. Moreover, the more the rotating speed of the fore differs from the idle, the larger the abnormal values become.

关键词： numerical simulation interaction propellers open water performance

Evaluation of terrestrial radiation in the Chengdu Plain using 1/250,000-scale geochemical prospecting data

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Nuclear Science and Techniques 2017年第10期28卷 31-36页

作者： qing-Xian Zhang Jian-Kun Zhao Yi Gu Liang-quan Ge Yuan-qing Huang Sichuan-Provincial Key Laboratory of Nuclear Technologyin Geosciences Chengdu University of TechnologyChengdu 610059China Sichuan Nuclear Geology Institute Chengdu 610061China

Based on the geochemical prospecting data, we have calculated the gamma absorbed dose rates in air 1 m above the ground surface in the Chengdu Plain, analyzed the relationship between the geological conditions and the distribution of the natural radionuclides, and preliminarily studied the influence of the geological conditions on the terrestrial radiation level in the Chengdu Plain. The result shows that the terrestrial radiation level in the Chengdu Plain is slightly lower than the average values of China and varies greatly according to the complex geological conditions.

关键词：成都平原地面辐射地球化学找矿评价天然放射性核素地质条件辐射水平普查数据

A DFT study of the CO adsorption and oxidation at ZnO surfaces and its implication for CO detection

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Chinese Chemical Letters 2020年第6期31卷 1674-1679页

作者： Zibin Ni Shenyuan Bao xue-qing Gong Key Laboratory for Advanced Materials Centre for Computational Chemistry and Research Institute of Industrial CatalysisSchool of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

Recently,ZnO-based gas sensors have been successfully fabricated and widely studied for their excellent sensitivity and selectivity,especially in CO ***,detailed explorations of their mechanisms are rather ***,aiming at clarifying the sensing mechanism,we carried out density functional theory(DFT)calculations to track down the CO adsorption and oxidation on the ZnO(1010)and(1120)*** calculated results show that the lattice O of ZnO(1010)is more reactive than that of ZnO(1120)for CO *** the calculated energetics and structures,the main reaction product on both surfaces can be determined to be CO2 rather than ***,the surface conductivity changes during the adsorption and reaction processes of CO were also *** both ZnO(1010)and(1120),the conductivity would increase upon CO adsorption and decrease following CO oxidation,in consistence with the reported experimental *** work can help understand the origins of ZnO-based sensors’performances and the development of novel gas sensors with higher sensitivity and selectivity.

关键词： Density functional theory ZnO Gas sensor CO oxidation Surface conductivity

Development of amplified consensus genetic markers in Taxodiaceae based on Cryptomeria japonica ESTs data

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Journal of Forestry Research 2013年第3期24卷 503-508页

作者： LU Yong-quan JIA qing TONG Zai-kang The Nurturing Station for the State Key Laboratory of Subtropical Silviculture Zhejiang Agriculture and Forestry University

Amplified consensus genetic marker （ACGM） is a PCR-based marker technique that uses primers designed within conserved regions of coding sequences. After a comparison of Cryptomeria japonica and Arabidopsis ESTs to search for conserved sequences, 237 single e-PCR products were obtained. We randomly selected 110 candidate ACGM markers to test. Of the 110 candidate ACGM markers tested, 106 yielded stable and clear PCR products in C. japonica. We then tested the utility of these 106 primer pairs in 10 species, representing 7 genera of Taxodi- aceae. The number of specific amplification primer pairs among those 10 species varied from 49 to 103 （or 46.2±97.2%）. The 106 primer pairs （ACGM loci） were high transferable to Cryptomeria fortunei Hooibrenk （97.2%） but were low in Metasequoia glyptostroboides （46.2%）. The number of PCR bands per primer pair ranged from 1.06 to 1.15, which means that most of the ACGM primers can obtain a single band within these 10 Taxodiaceae species. In summary, our study shows that ACGM is a technique applicable for marker development even in species with limited sequence data.

关键词： ACGM Taxodiaceae Cryptomeriajaponica EST database

A New Superlinearly Convergent SQP Algorithm for Nonlinear Minimax Problems

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Acta Mathematicae Applicatae Sinica 2007年第3期23卷 395-410页

作者： Jin-bao Jian Ran quan qing-jie Hu College of Mathematics and Information Science Guangxi University Nanning 530004 China College of Electrical Engineering Guangxi University Nanning 530004 Chin Department of Information Hunan Business College Changsha 410205 China

In this paper, the nonlinear minimax problems are discussed. By means of the Sequential Quadratic Programming （SQP）, a new descent algorithm for solving the problems is presented. At each iteration of the proposed algorithm, a main search direction is obtained by solving a Quadratic Programming （QP） which always has a solution. In order to avoid the Maratos effect, a correction direction is obtained by updating the main direction with a simple explicit formula. Under mild conditions without the strict complementarity, the global and superlinear convergence of the algorithm can be obtained. Finally, some numerical experiments are reported.

关键词： Minimax problems SQP algorithm global convergence superlinear convergence

Effects of Size Grading on Growth and Non-Specific Immunity Factors of the Shrimp Litopenaeus vannamei Boone

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Agricultural Sciences in China 2010年第3期9卷 416-422页

作者： LI Yu-quan LI Jian WANG qing-yin College of Animal Science and Technology Qingdao Agricultural University Qingdao 266109 P.R.China Key Laboratory for Sustainable Utilization for Marine Fisheries Resource Ministry of Agriculture~Yellow Sea Fisheries Research Institute Chinese Academy of Fisheries Science Qingdao 266071 P.R.China

The study aims to determine the effects of graded farming on growth performance and non-specific immunity factors of shrimp Litopenaeus vannamei Boone. Three size groups of shrimp, i.e., the small size group [Gs, with an average body length （BL） of （3.04 ± 0.36） cm and body weight （BW）（0.412± 0.35） g], the large group [GL, with a BL of （4.29±0.55） cm and BW of （1.098 ±0.42） g], and the ungraded group [Gm, with a BL of （3.47±0.81） cm and BW of （0.611 ±0.79） g], were reared under the same conditions for 8 wk. Growth performance and non- specific immunity factors were measured. The results showed that BW gain, biomass gain and the specific growth rate of body length （SGRL） were significantly influenced by size grading （one-way ANOVA, P 〈 0.05）. The peroxidase （POD） and antibacterial （Ua） activities of GL were lower than those of G. Superoxide dismutase （SOD） and lysozyme （U1） activities of Gm were lower than those of G. No significant difference （P = 0.121 〉 0.05） was found on phenoloxidase （PO） activity among the three size groups. Synthetically, size grading could enhance growth and rearing efficiency, and did not have a significant influence on the immunity of L. vannamei Boone. Therefore, graded fanning in L. vannamei Boone was feasible in the culture practice.

关键词： Litopenaeus vannamei Boone graded farming growth non-specific immunity factor

Carbothermic reduction characteristics of ludwigite and boron–iron magnetic separation

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International Journal of Minerals,Metallurgy and Materials 2018年第9期25卷 1000-1009页

作者： Guang Wang qing-guo xue Jing-song Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

Ludwigite is a kind of complex iron ore containing boron, iron, and magnesium, and it is the most promising boron resource in China. Selective reduction of iron oxide is the key step for the comprehensive utilization of ludwigite. In the present work, the reduction mechanism of ludwigite was investigated. The thermogravimetry and differential scanning calorimetry analysis and isothermal reduction of ludwigite/coal composite pellet were performed. Ludwigite yielded a lower reduction starting temperature and a higher final reduction degree compared with the traditional iron concentrates. Higher specific surface area and more fine cracks might be the main reasons for the better reducibility of ludwigite. Reducing temperature highly affected the reaction fraction and microstructure of the reduced pellets, which are closely related to the separation degree of boron and iron. Increasing reducing temperature benefited the boron and iron magnetic separation. Optimum magnetic separation results could be obtained when the pellet was reduced at 1300°C. The separated boron-rich non-magnetic concentrate presented poor crystalline structure, and its extraction efficiency for boron reached 64.3%. The obtained experimental results can provide reference for the determination of the comprehensive utilization flow sheet of ludwigite.

关键词： complex iron ore boron resource carbothermic reduction magnetic separation

Reduction and melting separation mechanism of boron-bearing iron concentrate/coal composite pellet

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Journal of Iron and Steel Research International 2018年第3期25卷 310-319页

作者： Guang Wang qing-guo xue Jing-song Wang State Key Laboratory of Advanced Metallurgy University ofScience and Technology Beijing Beijing 100083 China

Realizing the boron and iron separation through selective reduction and melting separation of boron-bearing iron con- centrate is of great significance for the utilization of crude ludwigite. The reduction and melting separation mechanism of boron-bearing iron concentrate/coal composite pellet was systematically investigated. The reduction and melting separation test of small size pellet was performed to reveal the evolution of slag and iron in the melting separation process. The isothermal reduction experiment showed the relationship between reduction stage and melting separation stage, and the step reduction and melting separation was perfectly achieved. Coal particles existed through the reduction and melting separation process and finally formed brown residue around the separated product. The pellet could not realize melting separation when the B2O3 content in the concentrate was lower than 6.00 wt%.

关键词： Boron-bearing iron concentrate Composite pellet-Reduction Melting separation-Mechanism