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Development of a fine-resolution atmosphere-wave-ocean coupled forecasting model for the South China Sea and its adjacent seas

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Acta Oceanologica Sinica 2019年第4期38卷 154-166页

作者： Junchuan Sun Zexun Wei Tengfei Xu Meng Sun Kun Liu Yongzeng Yang Li chen Hong Zhao Xunqiang yin Weizhong Feng Zhiyuan Zhang Yonggang Wang Key Laboratory of Marine Science and Numerical Modeling First Institute of OceanographyMinistry of Natural Resources Laboratory for Regional Oceanography and Numerical Modeling Qingdao National Laboratory for Marine Science and Technology National Marine Environmental Forecasting Center Ministry of Natural Resources South China Sea Marine Prediction Center Ministry of Natural Resources Hydro-Meteorological Center of Navy PLA

A 72-h fine-resolution atmosphere-wave-ocean coupled forecasting system was developed for the South China Sea and its adjacent seas. The forecasting model domain covers from from 15°S to 45°N in latitude and 99°E to135°E in longitude including the Bohai Sea, the Yellow Sea, the East China Sea, the South China Sea and the Indonesian seas. To get precise initial conditions for the coupled forecasting model, the forecasting system conducts a 24-h hindcast simulation with data assimilation before forecasting. The Ensemble Adjustment Kalman Filter(EAKF) data assimilation method was adopted for the wave model MASNUM with assimilating Jason-2 significant wave height(SWH) data. The EAKF data assimilation method was also introduced to the ROMS model with assimilating sea surface temperature(SST), mean absolute dynamic topography(MADT) and Argo profiles data. To improve simulation of the structure of temperature and salinity, the vertical mixing scheme of the ocean model was improved by considering the surface wave induced vertical mixing and internal wave induced vertical mixing. The wave and current models were integrated from January 2014 to October 2015 driven by the ECMWF reanalysis 6 hourly mean dataset with data assimilation. Then the coupled atmosphere-wave-ocean forecasting system was carried out 14 months operational running since November 2015. The forecasting outputs include atmospheric forecast products, wave forecast products and ocean forecast products. A series of observation data are used to evaluate the coupled forecasting results, including the wind, SHW, ocean temperature and *** forecasting results are in good agreement with observation data. The prediction practice for more than one year indicates that the coupled forecasting system performs stably and predict relatively accurate, which can support the shipping safety, the fisheries and the oil exploitation.

关键词： South China Sea COAWST model MASNUM model atmosphere-wave-ocean forecasting system data assimilation

Scalable Core–Sheath Yarn for Boosting Solar Interfacial Desalination Through Engineering Controllable Water Supply

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Engineering 2023年第11期30卷 153-160页

作者： Xingfang Xiao Luqi Pan Tao chen Manyu Wang Lipei Ren Bei chen yingao Wang qian Zhang Weilin Xu State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Textile Science and EngineeringNational Local Joint Laboratory for Advanced Textile Processing and Clean ProductionWuhan Textile UniversityWuhan 430200China

Tailoring water supply to achieve confined heating has proven to be an effective strategy for boosting solar interfacial evaporation ***,because of salt clogging during desalination,a critical point of constriction occurs when controlling the water rate for confined *** this study,we demonstrate a facile and scalable weaving technique for fabricating core-sheath photothermal yarns that facilitate controlled water supply for stable and efficient interracial solar *** core-sheath yarn comprises modal fibers as the core and carbon fibers as the *** of the core-sheath design,remarkable liquid pumping can be enabled in the carbon fiber bundle of the dispersed superhydrophilic modal *** woven fabrics absorb a high proportion(92%)of the electromagnetic radiation in the solar spectrum because of the weaving structure and the carbon fiber *** one-sun(1 kW·m^(-2))illumination,our woven fabric device can achieve the highest evaporation rate(of 2.12kg·m^(-2)·h^(-1) with energy conversion efficiency:93.7%)by regulating the number of core-sheath *** application tests demonstrate that our device can maintain high and stable desalination performance in a 5 wt%NaCl solution.

关键词： Interfacial solar desalination Photothermal yarn Tunable water supply Core-sheath yarn'Salt clogging

考虑间隙的空间圆柱铰多体系统运动学精度及动力学分析

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振动与冲击 2017年第19期36卷 151-157页

作者：刘太素钱林方尹强南京理工大学机械工程学院南京210094

为了研究空间圆柱铰间隙对系统性能的影响,针对典型的空间圆柱间隙铰结构,分析了其所有可能出现的接触模式。针对空间圆柱铰轴向和径向都存在间隙的情况,对复杂的接触模式进行了几何和运动学分析,提出一种改进的计算潜在接触点位置的方... 详细信息

为了研究空间圆柱铰间隙对系统性能的影响,针对典型的空间圆柱间隙铰结构,分析了其所有可能出现的接触模式。针对空间圆柱铰轴向和径向都存在间隙的情况,对复杂的接触模式进行了几何和运动学分析,提出一种改进的计算潜在接触点位置的方法,建立了接触碰撞力模型,将其带入多体系统动力学方程。对空间双摆进行了理想模型和间隙模型的对比分析。结果表明,由于轴向和径向间隙的存在,系统的运动学精度和动力学性能都受到了很大的影响,间隙大小的变化也会改变系统的运动学到位精度。空间圆柱间隙铰的建模方法和结果为机械结构的设计和改进提供了理论依据。

关键词：空间圆柱铰接触模式铰间隙潜在接触点多体系统

Determination of trace arsenic(V) by catalytic solid substrate-room temperature phosphorescence quenching method

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Chinese Chemical Letters 2007年第6期18卷 711-713页

作者： Guo Hui Zhu Zhi Ming Li Xiao Hua chen Jia Ming Liu Tian Long Yang Wen qian Zhang Shao Xian Lin Ping Zhou Department of Food and Biological Engineering Zhangzhou Institute of Technology Zhangzhou 363000 China Department of Chemistry and Environmental Science Zhangzhou Normal College Zhangzhou 363000 China

In the H2SO4 medium and in the presence of dodecylbenzene sulfonic acid sodiumsalt (DBS), dimethyl yellow (R) could emit strong and stable solid substrate room temperature phosphorescence (RTP) on filter paper. And NaIO4 could oxidize R to cause the RTP quenching. Arsenic(V) could catalyze the reaction of NaIO4 oxidizing R, which caused the RTP sharply quenching. The reducing value of phosphorescence intensity (ΔIp) for the system with DBS is 3.3 times higher than that without DBS. Moreover, the ΔIp is proportional to the concentration of As(V). Based on the facts above, a new RTP quenching method for the determination of trace As(V) has been established.

关键词： Arsenic(V) Dimethyl yellow Catalytic solid substrate-room temperature phosphorescence quenching method

High power and stable P-doped yolk-shell structured Si@C anode simultaneously enhancing conductivity and Li^(+)diffusion kinetics

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Nano Research 2021年第4期14卷 1004-1011页

作者： Ming chen Qinnan Zhou Jiantao Zai Asma Iqbal TsegayeTadesse Tsega Boxu Dong Xuejiao Liu Yuchi Zhang Changyu Yan Liang Zhao Ali Nazakat SharelPeisan E CheeTongJohn Low Xuefeng qian Shanghai Electrochemical Energy Devices Research Center School of Chemistry and Chemical Engineering and State Key Laboratory oj Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China Warwick Electrochemical Engineering Group WMGEnergy Innovation CentreUniversity of WarwickCV47ALUK School of Health&Life Sciences Teesside UniversityMiddlesbroughTS13BXUK

Silicon is a low price and high capacity ancxje material for lithium-ion *** yolk-shell structure can effectively accommodate Si expansion to improve ***,the limited rate performance of Si anodes can't meet people's growing demand for high power ***,the phosphorus-doped yolk-shell Si@C materials(P-doped Si@C)were prepared through carbon coating on P-doped Si/SiO_(x)matrix to obtain high power and stable ***,the as-prepared P-doped Si@C electrodes delivered a rapid increase in Coulombic efficiency from 74.4%to 99.6%after only 6 cycles,high capacity retention of-95%over 800 cycles at 4 A·g^(-1),and great rate capability(510 mAh·g^(-1)at 35 A·g^(-1)).As a result,P-doped Si@C anodes paired with commercial activated carbon and LiFePO_(4)cathode to assemble lithium-ion capacitor(high power density of〜61,080 W·kg^(-1)at 20 A·g^(-1))and lithium-ion full cell(good rate performance with 68.3 mAh·g^(-1)at 5 C),*** work can provide an effective way tofurther improve power density and stability for energy storage devices.

关键词： P-doped yolk-shell structured Si@C anode excellent rate performance long life lithium-ion battery high power full cell

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火炮后效期火药气体流空过程的近似计算方法

兵工学报 2021年第7期42卷 1381-1391页

作者：缪伟尹强钱林方南京理工大学机械工程学院江苏南京210094 西北机电工程研究所陕西咸阳712099

火炮后效期内炮膛合力的变化规律对火炮运动计算有着十分重要意义。针对经典后效期理论假设的火药燃气状态参数空间分布与数值解不能严格符合的问题,基于相似性假设从膛内气体的控制方程中分离出描述气体参数分布的微分积分方程组,并提... 详细信息

火炮后效期内炮膛合力的变化规律对火炮运动计算有着十分重要意义。针对经典后效期理论假设的火药燃气状态参数空间分布与数值解不能严格符合的问题,基于相似性假设从膛内气体的控制方程中分离出描述气体参数分布的微分积分方程组,并提出求解的数值计算方法。根据求得的气体参数分布,导出气体状态参数和炮膛合力在后效期内随时间变化规律的计算公式,计算后效作用系数。以37 mm高射炮和122 mm榴弹炮两种火炮为例进行计算,将导出公式及经典理论的计算结果与数值仿真结果进行对比。结果表明:气体参数分布与数值仿真结果吻合;炮膛合力的变化规律与数值仿真结果很好地符合;后效作用系数与数值仿真结果的相对误差为0.38%~1.80%.

关键词：火炮后效期炮膛合力后效作用系数分离变量法

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高速公路运输量研究

中国公路学报 2005年第2期18卷 94-98页

作者：陈荫三长安大学运输科学研究院陕西西安710064

提出了高速公路运输量的统计方法,并以南京—上海高速公路为例,首次统计了中国高速公路的客运量、货运量、客运周转量、货运周转量以及客、货运输密度。研究表明:在南京—上海通道内,高速公路和铁路起着同样的关键作用;货运方面,高速公... 详细信息

提出了高速公路运输量的统计方法,并以南京—上海高速公路为例,首次统计了中国高速公路的客运量、货运量、客运周转量、货运周转量以及客、货运输密度。研究表明:在南京—上海通道内,高速公路和铁路起着同样的关键作用;货运方面,高速公路和铁路运送货物价值相差很大,两者是互补性的,客运方面,高速公路客运量中个性化出行与铁路是互补性的,而群体性出行与铁路是替代性的。对高速公路上运行的车辆状况进行了分析,指出货运量主要是由四轴的半挂列车和两轴的单车完成的。客运中个性化出行的乘客占40%,车数占88%。

关键词：交通工程高速公路运输量统计分析通道实证研究

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基于旋转交错网格的探地雷达正演数值模拟

中国有色金属学报 2015年第7期25卷 1943-1952页

作者：张彬戴前伟尹小波中南大学地球科学与信息物理学院长沙410083 中南大学有色金属成矿预测教育部重点实验室长沙410083 中南大学资源勘查与环境地质研究院长沙410083

以旋转交错网格(RSG)差分为基础,实现探地雷达(GPR)在非均匀突变介质中的正演数值模拟。通过利用旋转交错差分算子,将雷达波场各场分量设置在非均匀突变介质的基本单元中,单元内同一物性参数定义在同一位置,将对角线方向上物性参数差分... 详细信息

以旋转交错网格(RSG)差分为基础,实现探地雷达(GPR)在非均匀突变介质中的正演数值模拟。通过利用旋转交错差分算子,将雷达波场各场分量设置在非均匀突变介质的基本单元中,单元内同一物性参数定义在同一位置,将对角线方向上物性参数差分值的线性组合来计算坐标轴方向上的物性参数差分值,针对非均匀特征变化剧烈的网格区域,算法中的单元网格形式不再需要进行插值,扩宽了数值稳定性条件的限制。推导了适合于探地雷达的旋转交错网格差分格式及TMy极化模式下的更新方程组,实现了均匀介质和非均匀突变介质中的TMy雷达波场的数值模拟,并分别从解析解、模拟剖面和波场快照的角度,与标准交错网格差分算法进行了对比。结果表明,在模拟非均匀特征明显的介质时,旋转交错网格算法可以选取更大的时间步长,数值色散程度控制更好,提高了模拟效率和成像精度,可更有效地指导非均匀突变介质中探地雷达数据的解译。

关键词：旋转交错网格标准交错网格探地雷达正演模拟数值色散

Cloning and characterization of a potato StAN11 gene involved in anthocyanin biosynthesis regulation

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Journal of Integrative Plant Biology 2014年第4期56卷 364-372页

作者： Wang Li Bing Wang Man Wang Min chen Jing-Ming yin Ghullam Murtaza Kaleri Rui-Jie Zhang Tie-Niu Zuo Xiong You Qing Yang College of Life Sciences Nanjing Agricultural University

Anthocyanins are a class of products of plant secondary metabolism and are responsible for tubers color in potato. The biosynthesis of anthocyanins is a complex biological process, in which multiple genes are involved including structural genes and regulatory genes. In this study, StAN11, a WD4o-repeat gene, was cloned from potato cultivar Chieftain （Solanum tuberosum L.）. StAN11 （HQ5995o6） contained no intron and its open reading frame （ORF） was 1,o29 bp long, encoding a putative protein of 342 amino acids. In order to verify its role in anthocyanin biosynthesis, StAN11 was inserted behind the CaMV-35S promoter of pCMBIA1304 and the recombination vector was introduced into the potato cultivar Desiree plants by Agrobacterium-mediated transfor- mation. The color of transgenic tuber skin was significantly deepened, compared to the wild-type control, which was highly consistent with the accumulation of anthocyanin and expression of StAN11 in transgenic lines tuber skin. Further analysis on the expression of Flavonone-3-hydroxylase （F3H）,Dihydroflavonol reductase （DFR）, Anthocyanidin synthase （ANS）, and F1avonoid 3-O-glucosyl transferase （3GT） in transgenic plants revealed that only DFR was upregulated. This result suggested that StAN11 regulated anthocyanin biosynthesis in potato by controlling DFR expression and accumulation of anthocyanin could be increased through overexpression of .StAN11 in the tubers with the genetic background of anthocyanin biosynthesis.

关键词： Anthocyanin biosynthesis cloning genetic transformation potato StAN11