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Origin of the springtime South China Sea Warm Current in the southwestern Taiwan Strait: Evidence from seawater oxygen isotope

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Science China Earth Sciences 2020年第10期63卷 1564-1576页

作者： Dongyu CHEN Ergang liAN Yeqiang SHU Shouye YANG yalong li Chao li Pengfei liU Ni SU State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

Oxygen isotope(δ^18O)of seawater is an excellent proxy for tracing the origins of water masses and their mixing *** with hydrographic observation,hybrid coordinate ocean model(HYCOM)analysis data,and seawater oxygen isotope,we investigated the source of the South China Sea Warm Current(SCSWC)in the southwestern Taiwan Strait and its underlying *** show that the Kuroshio subsurface water(KSSW)can intrude the continental slope in the southwestern Taiwan Strait,and thereby climb up the continental slope coupled with ***δ^18O-salinity relationship further indicates that in spring,the SCSWC in the southwestern Taiwan Strait originates from the upslope deflection of the slope current formed by the KSSW intrusion into the South China Sea,rather than from the west segment of the SCSWC formed to the east of Hainan *** addition,the southward flowing Zhe-Min Coastal Current(ZMCC)can reach as far as the Taiwan Bank(TB)and deflects offshore over the western TB at approximately 23.5°N,to some extent affecting the ***,this study reveals that seawaterδ^18O is exquisitely sensitive to the determination of the origin and transport of water masses as compared with traditional potential temperature-salinity plot(θ-S)and HYCOM analysis *** addition,their coupling can more reliably interpret the mixing processes of shelf water masses.

关键词： Oxygen isotope South China Sea Warm Current Zhe-Min Coastal Current Kuroshio Southwestern Taiwan Strait

DOPA-IGF-1 Coated HA/PLGA Microspheres Promoting Proliferation and Osteoclastic Differentiation of Rabbit Bone Mesenchymal Stem Cells

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Chemical Research in Chinese Universities 2019年第3期35卷 514-520页

作者： liU Guomin li yalong YANG Shuting ZHAO Yian LU Tiancheng JIA Wenyuan JI Xuan LUO Yungang Department of Prosthdontics the Hospital of StomatologyJilin UniversityChangchun 130021P.R.China Department of Stomatology the Second Hospital cf Jilin UniversityChangchun 130041P.R.China life Sciences College Jilin Agricultural UniversityChangchun 130118P.R.China Jilin Provincial Changbai Mountain Medicine Anti-tumor Engineering Center the Second Hospital of Jilin UniversityChangchun130041P.R.China

To explore the ability of dihydroxyphenylalanine-insulin-like growth factor-1 (DOPA-IGF-1) coated hydroxyapatite/poly(lactic-co-glycolic acid)(HA/PLGA) microspheres to promote the proliferation and osteoclastic differentiation of rabbit bone mesenchymal stem cells(rBMSCs), HA/PLGA microspheres with different HA content (10%, 30%, 50%, mass fraction) were prepared by electrospinning method and HA/PLGA microspheres with 50% HA were coated with IGF-1 and DOPA-IGF-1, respectively. They were co-cultured with rBMSCs, respctively. Cell counting kit-8(CCK-8) detection, confocal laser scanning microscopy(CLSM), alkaline phosphatase(ALP) detection and osteogenesis related genes COL IA1, Runx2 and bone morphogenetic protein-2(BMP-2) detection were conducted to detect the proliferation activity, cell morphology, differentiation ability and the expression level of osteogenesis-related genes of cells cultured on all microspheres groups. The results showed that rBMSCs proliferation increased in an HA content dependent manner, and cells proliferated more in the IGF-1 coated and DOPA-IGF-1 coated groups, in particular in DOPA-IGF-1 coated group, and the differences were more remarkable over time (Pliferation and osteogenic differentiation of rBMSCs, and DOPA-IGF-1 coating enhanced the proliferation and osteogenic differentiation of rBMSCs.

关键词： Biomaterial Electrospinning Biocompatibility Hydrophilic polymer

Sedimentology and Sequence Stratigraphy of Marine to Lacustrine Deltaic Deposits in a Craton Basin and Their Controlling Factors: Shan 2 Member–He 8 Member(Guadalupian–Lopingian, Permian), Southeast Ordos Basin, North China

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 268-285页

作者： SHAN Xin YU Xinghe Peter CliFT li yalong JIN lina SU Dongxu DU Yonghui ZHOU Jinsong HAN Xiaoqin Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of Oceanography State Oceanic Administration Qingdao 266061 Shandong China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology Qingdao 266061 China School of Energy Resources China University of Geosciences Beijing 100083 China Department of Geology and Geophysics Louisiana State University Baton Rouge 70803 USA School of Ocean and Earth Science Tongji University Shanghai 200092 China Research Institute of Shaanxi Yanchang Petroleum (Group) Company limited Xi 'an 710065 Shaanxi China

The Shan 2 Member, Shan 1 Member and He 8 Member of the Mid-Late Permian Shanxi and lower Xiashihezi formations, in the southeastern Ordos Basin, together comprise -150 m of deltaic deposits. This sequence records an overall evolution from deep marine environment to shallow lake associated with braided river, braided river delta and meandering river delta. Core description, well log interpretation, and stable isotope analysis, including carbon, oxygen and strontium, were conducted to understand the sedimentary evolution of Shan 2 to He 8 Member. The Shanxi Formation, which consists of the Shan 2 and Shan 1 members, is characterized by a tidal-influenced meandering river delta environment and a higher j13C value and S7Sr/S6Sr ratio and a lower jlSo value. The He 8 Member, the basal part of the Xiashihezi Formation, is featured by a braided river to braided river delta system and a lower j13C value, S7Sr/S6Sr ratio, and a higher jlSo value. Four third-order depositional sequences separated by five sequence boundaries are determined. Coarsening upward sequences of the Shan 2 Member-He 8 Member indicate a general regression trend, which can be correlated to global sea-level fall occurring during the Roadian-Wuchiapingian, as also evidenced by previous published zircon U-Pb results. The coal-bearing sequence （Shanxi Formation） to non-coal-bearing sequence （He 8 Member）, as well as a decrease of 87Sr/86Sr, suggest a trend from humid to arid climates. A combined effect of sea-level drop and a small uplift at the end of Shanxi Formation are proposed.

关键词： sequence stratigraphy sedimentary sequence delta marine to lacustrine evolution Roadian-Wuchiapingian Ordos Basin

Interview:Cultural Crossroads

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China Weekly 2022年第4期 56-57页

作者： Ding Si li yalong 不详

Dunhuang in Northwest China's Gansu Province is a unique place where the world's four major cultural systems-Chinese,Indian,Greek and Islamic-met and integrated,according to Ji Xianlin,a prominent Chinese historian,Indologist,linguist,and paleographer(1911-2009).In a world plagued by ethnic and religious conficts,what can be learned from the history of Dunhuang on the ancient Silk Road,once known for its cultural integration and harmony?In an interview withNewsChina,Professor Zheng Binglin,director of the Institute of Dunhuang Studies at Lanzhou University,Gansu Province,reveals how the experiences of yesterday could serve as a guide for today's world.

关键词： religious harmony interview

Poly-dopamine, poly-levodopa, and poly-norepinephrine coatings: Comparison of physico-chemical and biological properties with focus on the application for blood-contacting devices

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Bioactive Materials 2021年第1期6卷 285-296页

作者： Xing Tan Peng Gao yalong li Pengkai Qi Jingxia liu Ru Shen lianghui Wang Nan Huang Kaiqin Xiong Wenjie Tian Qiufen Tu Key Lab of Advanced Technology of Materials of Education Ministry Southwest Jiaotong UniversityChengdu610031China Department of Stem Cell Center Henan Key Laboratory of Stem Cell Differentiation and ModificationHenan Provincial People's HospitalPeople's Hospital of Zhengzhou UniversityZhengzhouHenan450003China Physical Education Department Southwest Jiaotong UniversityChengdu610031China Cardiology Department Sichuan Academy of Medical Sciences&Sichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of China.32 West Second SectionFirst Ring RoadChengdu 610072China

Thanks to its simplicity,versatility,and secondary reactivity,dopamine self-polymerized coatings(pDA)have been widely used in surface modification of biomaterials,but the limitation in secondary molecular grafting and the high roughness restrain their application in some special ***,some other catecholamine coatings analog to pDA have attracted more and more attention,including the smoother poly-norepinephrine coating(pNE),and the poly-levodopa coating(pLD)containing additional carboxyl ***,the lack of a systematic comparison of the properties,especially the biological properties of the above three catecholamine coatings,makes it difficult to give a guiding opinion on the application scenarios of different ***,we systematically studied the physical,chemical,and biological properties of the three catecholamine coatings,and explored the feasibility of their application for the modification of biomaterials,especially cardiovascular *** them,the pDA coating was the roughest,with the largest amount of amino and phenolic hydroxyl groups for molecule grafting,and induced the strongest platelet adhesion and *** pLD coating was the thinnest and most hydrophilic but triggered the strongest inflammatory *** pNE coating was the smoothest,with the best hemocompatibility and histocompatibility,and with the strongest cell selectivity of promoting the proliferation of endothelial cells while inhibiting the proliferation of smooth muscle *** sum up,the pNE coating may be a better choice for the surface modification of cardiovascular materials,especially those for vascular stents and grafts,but it is still not widely recognized.

关键词： Catecholamine Self-polymerization Bioactive coating Surface modification Biocompatibility

Short-term wind power forecasting model based on random forest algorithm and TCN

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Short-term wind power forecasting model based on random fore...

基于Biased-SVM和Poisson曲面矿体三维自动建模方法

第40届中国控制会议

作者： Zha Wenting liu Jie li yalong liang Yingyu School of Mechanical Electronic ＆ Information Engineering China University of Mining ＆ Technology （Beijing）

Wind power has strong stochastic volatility, short-term forecasting accuracy is not high. With the increase of grid connected capacity of wind farms, the overall prediction error has a greater impact on the system operation. This paper investigates the short-term power prediction problem for wind farms based on historical wind power and meteorological ***, the preprocessed original data are divided into training set and test set, and the random forest（RF） algorithm is applied to screen out the feature data that have the greatest impact on the output power from all the feature data of the training set. Then,the training and the test sample sets are reconstructed based on the screening results, and the temporal convolution network（TCN）is built by finding the optimal hyper-parameter combination of the network with the grid search algorithm. Finally, comparative experiments for a wind farm in a certain area of North China are presented to demonstrate the effectiveness and advancement of the proposed prediction model.

关键词： Random forest Feature Selection Temporal convolution networks(TCN) Wind power forecast

来源： cnki会议评论

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中国矿业大学学报 2018年第5期47卷 1123-1130页

作者：毕林赵辉李亚龙中南大学资源与安全工程学院数字矿山研究中心湖南长沙410083

矿体三维建模是数字矿山的基础和核心.为了提高建模效率,减少人工干预,提出了基于偏差支持向量机(Biased-SVM)和Poisson曲面的矿体隐式自动三维建模方法.该方法通过对原始钻孔数据的学习建立最优分类函数,将离散化的建模空间内任意点分... 详细信息

矿体三维建模是数字矿山的基础和核心.为了提高建模效率,减少人工干预,提出了基于偏差支持向量机(Biased-SVM)和Poisson曲面的矿体隐式自动三维建模方法.该方法通过对原始钻孔数据的学习建立最优分类函数,将离散化的建模空间内任意点分类为矿体外与矿体内;在此基础上提取矿体边界点,计算点云法向,建立表征矿体模型几何信息的有向点集;结合矿体点云模型采用Poisson曲面法建立矿体边界指示函数,并提取等值面形成矿体模型.针对不同矿体钻孔数据,采用该方法建立矿体模型,并与传统显式建模方法进行对比分析.结果表明:提出的方法具有人工干预少、自动化程度高、模型表达自然光滑等优点,为矿体的自动建模与更新提供了一条有效途径.

关键词：矿体三维建模隐式建模机器学习 Biased-SVM Poisson曲面数字矿山

Eco-friendly gas insulating medium for next-generation SF_(6)-free equipment

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iEnergy 2023年第1期2卷 14-42页

作者： Yi li Shuangshuang Tian linlin Zhong Geng Chen Song Xiao Yann Cressault Yuwei Fu Yu Zheng Christophe Preve Zhaolun Cui Yin Zhang Fanchao Ye Daniel Piccoz Gang Wang yalong li Youping Tu Wenjun Zhou Ju Tang Xiaoxing Zhang Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment Hubei University of TechnologyWuhan 430068China School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China School of Electrical Engi-neering Southeast UniversityNanjing 210096China State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China LAPLACE(Laboratoire Plasma et Conversion d'Energie) Universitéde ToulouseToulouse 31013France Department of Electrical Engineering Xi’an University of TechnologyXi’an 710048China Schneider Electric Reuil-Malmaison 92500France School of Electric Power Engineering South China University of TechnologyGuangzhou 510006China

Gas-insulated equipment(GIE)that utilizes the most potent greenhouse gas sulfur hexafluoride(SF_(6))as insulation and arc-quenching medium has been widely used in the power *** eco-friendly insulating gas with advanced performance for next-generation SF_(6)-free GIE is significant for the“net-zero”goal and sustainable *** this paper,the utilization,emission,and reduction policies of SF_(6)around the world were summarized ***,we systematically reviewed the latest progress in comprehensive performance evaluation of eco-friendly insulating gas in terms of molecular design,dielectric insulation,arc-quenching,stability and decomposition,materials compatibility,biosafety,***,the representative applications of eco-friendly insulating gas in medium-voltage,high-voltage GIE as well as relevant maintenance-related technologies were ***,the existing challenges and future perspectives were proposed,presenting a roadmap to hopefully steer the development of eco-friendly insulating gas and GIE.

关键词： Eco-friendly insulating gas net-zero dielectric insulation arc-quenching SF_(6)-free gas-insulated equipment(GIE)

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加筋红砂岩力学特性研究

辽宁工程技术大学学报（自然科学版） 2023年第2期42卷 143-151页

作者：张和李亚龙中铁大桥勘测设计院集团有限公司武汉分公司湖北武汉430000 中南大学土木工程学院湖南长沙410075

为改变传统红砂岩由于强度低无法作为高速公路路基填料的现状,将红砂岩与土工格栅及格宾组合形成加筋土,探究加筋条件下的力学特性。采用粗粒土三轴剪切仪,进行0层、2层、3层水平铺筋条件下的不排水剪切试验,并引入强度比参数对加筋效... 详细信息

为改变传统红砂岩由于强度低无法作为高速公路路基填料的现状,将红砂岩与土工格栅及格宾组合形成加筋土,探究加筋条件下的力学特性。采用粗粒土三轴剪切仪,进行0层、2层、3层水平铺筋条件下的不排水剪切试验,并引入强度比参数对加筋效果进行定量评价。试验结果表明:当轴向应变小于2%时,加筋土的强度没有明显变化,轴向应变继续增大,加筋土强度逐渐超过纯土样,在400 kPa围压时大主应力差提高了50%;相同层数的格宾加筋强度普遍高于格栅加筋,其加筋效果系数均在1.39以上;筋材能明显提高红砂岩的峰值强度和土体延性,使红砂岩的黏聚力最大提高149%,摩擦角最大提高15.32%。采用邓肯-张模型和离散元模拟对加筋土的力学性质进行评估,为加筋土力学评价体系的建立提供参考。

关键词：路基填料加筋土抗剪强度红砂岩