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Variation of reactivity of particulate and sedimentary organic matter along the Zhujiang River Estuary

Acta Oceanologica Sinica 2003年第4期22卷 557-568页

作者： Chen Jianfang 1,2, Jin Haiyan 1,2, Yin Kedong3. Li Yan 1,2 1. Key Laboratory of Submarine Geosciences of State Oceanic Administration, Hangzhou 3.0012, China. 2. Laboratory of Regional Oceanography, Second Institute of Oceanography, State Oceanic Aedministration, Hangzhou,3.0012, China 3. Department of Biology, hong Kong University of Science and Technology, hong Kong Key Lab. of Submarine Geosci. State Hangzhou 310012 China Laboratory of Regional Oceanography Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China Department of Biology Hong Kong Univ. of Sci./Technology Hong Kong Hong Kong

To investigate organic matter source and reactivity in the Zhujiang River (Pearl River) Estuary and its adjacent areas, particulate organic carbon (POC), particulate hydrolysable amino acids (PHAA), and Chl a during two cruises in July 1999 and July 2000 were measured. The highest POC and PHAA concentration was observed in the waters with maximum Chl a. The spectra distribution, relative content (dry weight in milligram per gram), PHAA-C% POC and other indicators such as the ratios of amino acids vs. amino sugars (AA/AS) and glucosamine vs. galactosamine (Glum/Gal) suggested that particulate amino acids in the water column and sediments in the Zhujiang River Estuary were mainly derived from biogenic processes rather than transported from terrestrial erosion. In inner estuary where high turbidity was often observable, organic matter was mainly contributed by re-suspension of bottom sediments with revealed zooplankton, microbial reworked characteristics, which suggest that these organic matters were relatively 'old'. In the estuarine brackish region, organic matter in water column is mainly contributed by relatively fresh, easily degradable phytoplankton derived organic matter. During physical - biological processes within the eastuary, organic matter derived from phytoplankton was subjected to alteration by zooplankton grazing and bacterial reworking.

关键词： organic matter reactivity amino acids the Zhujiang River Estuary

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羌活人工栽培下生物量及元素积累动态研究

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中国中药杂志 2017年第14期42卷 2645-2648页

作者：蒋舜媛秦纪洪孙辉王红兰万凌云周毅王敏四川省中医药科学院四川成都610041 成都大学环境工程系四川成都610106 四川大学环境科学与工程系四川成都610065 四川诺托璞生态药材有限公司四川马尔康624000

通过对原产地大田移栽定植后羌活实生苗开展连续3.的定期采样观测与分析,确定人工栽培条件下,羌活地上与地下部分生长动态与元素积累的季节动态与年际动态,揭示人工栽培条件下羌活的生物量和元素动态积累规律。结果表明:(1)移栽2年后... 详细信息

通过对原产地大田移栽定植后羌活实生苗开展连续3.的定期采样观测与分析,确定人工栽培条件下,羌活地上与地下部分生长动态与元素积累的季节动态与年际动态,揭示人工栽培条件下羌活的生物量和元素动态积累规律。结果表明:(1)移栽2年后羌活植株地下部分生物量干重增加3.倍,而第1年和第3.仅分别增加6倍和2倍,由此说明人工栽培羌活的产量关键是在移栽后第1年和第2年,缩短移栽后的恢复生长时间有利于缩短生产周期和提高产量。(2)移栽第1年和第2年羌活地下部分元素累积量呈稳定增长状态,第3.生长季节前期急剧下降,而后到7—8月再超过第2年秋季的积累量。(3.不论是对于地下部分增重还是地上部分生长,钙(Ca)、铁(Fe)、硼(B)和锌(Zn)均是羌活栽培后期(第2年和第3.)需求量较大的重要营养元素。该结果将为实现羌活的人工栽培技术规范制定以及专用肥配制等提供理论依据。

关键词：羌活药用植物栽培生物量动态元素积累需肥规律

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带时间要求的物流作业集成优化分配方法

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系统工程学报 2004年第2期19卷 154-160页

作者：王勇梁志坚许溢宏重庆大学经济与工商管理学院重庆400044 香港中文大学香港城市大学

作业集成机制是物流中心降低运行成本的核心手段.论文基于活动集成和批量集成的概念,吸收置信区间的思想,建立带时间要求的物流中心作业集成优化分配模型.研究了模型变形、分解和利于作业集成的选择变量置换的试探途径,提出了获得模型... 详细信息

作业集成机制是物流中心降低运行成本的核心手段.论文基于活动集成和批量集成的概念,吸收置信区间的思想,建立带时间要求的物流中心作业集成优化分配模型.研究了模型变形、分解和利于作业集成的选择变量置换的试探途径,提出了获得模型初始可行解和优化分配方案的启发式方法.提出了模型分枝定界过程的若干性质和减枝规则,形成了适于模型的分枝定界法.数值计算结果证明了算法的有效性.

关键词：物流中心物流作业集成优化分配方法时间约柬

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Acousto-optic scanning multi-photon lithography with high printing rate

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Opto-Electronic Advances 2024年第2期7卷 1-3页

作者： Minghui hong Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005China

As a manufacturing method that is focused on end-users,3. printing has gained a lot of attention in recent years due to its unique advantages in fabricating complex three-dimensional *** new micro-nano 3. printing methods have been developed to meet the demand for high-precision and high-yield *** them,multi-photon-photon lithography(MPL) is a promising 3. nanofabrication technology due to its capability of true 3. digital processing and nanoscale processing resolution beyond the diffraction *** has been widely used to fabricate microoptics10,11,photonic crystals12,microfluidics13.meta-surfaces14,and mechanical metamaterials15.

关键词： photon Acous scanning

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香港水域夏季微型浮游动物摄食研究

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生态学报 2003年第4期23卷 712-724页

作者：孙军宋秀贤殷克东刘东艳中国海洋大学海洋生命学院青岛266003 中国科学院海洋研究所青岛266071 香港科技大学生物系

20 0 0年 8月在香港牛尾海 ( A站 )和龙鼓水道 ( B站 )的 2个典型站位采样 ,用半现场的稀释法研究了夏季香港水域浮游植物的生长率和微型浮游动物对浮游植物的摄食压力等。结果表明 :A、B站浮游植物主要以硅藻为主 ,但 A站甲藻比重比 B... 详细信息

20 0 0年 8月在香港牛尾海 ( A站 )和龙鼓水道 ( B站 )的 2个典型站位采样 ,用半现场的稀释法研究了夏季香港水域浮游植物的生长率和微型浮游动物对浮游植物的摄食压力等。结果表明 :A、B站浮游植物主要以硅藻为主 ,但 A站甲藻比重比 B站要高。A站 3.d- 1,而在 B站则出现了负增长 ,其净生长率是 - 0 .5 8d- 1。微型浮游动物在 A、B站的摄食率分别为0 .71和 1 .5 6d- 1,摄食压力分别占到了浮游植物现存量的 1 43.7%和 2 0 9.7% ,初级生产力的 78.6%和1 2 6.6% ,对浮游植物碳的摄食率分别达到 3. 1和 5 5 2 μg C/( L·d)。A站的浮游植物生长要高于 B站 ,B站的微型浮游动物摄食压力要明显高于 A站。与其它海区比较香港水域微型浮游动物摄食压力处于中等水平。

关键词：微型浮游动物摄食压力浮游植物稀释法香港海洋生态系统生态系统动力学

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R-matrix for the 8-Dimensional Spin Representation of Uq(so7)

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Acta Mathematica Sinica,English Series 2024年第2期40卷 485-497页

作者： hong Mei HU Nai hong HU School of Mathematical Sciences Suzhou University of Science and TechnologySuzhou 215009P.R.China School of Mathematical Sciences MOE Key Laboratory of Mathematics and Engineering Applications&Shanghai Key Laboratory of PMMPEast China Normal UniversityShanghai 200241P.R.China

The purpose of the paper is to describe the solution to the quantum Yang-Baxter equation associated with the 8-dimensional spin representation Tsp of Uq(so7).The self-duality of Tsp and the symmetry of the corresponding braiding matrix are ***,the minimal polynomial of the braiding R-matrix of Tsp is presented explicitly in an ingenious method by taking advantage of nice features of the spin representation Tsp.

关键词： Braiding R-matrix spin module minimal polynomial

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A study that redefines the concept of a well-known orchid–pollinator attraction strategy

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National Science Review 2024年第5期11卷 98-99页

作者： hong Liu Department of Earth and Environment International Center for Tropical Botany Florida International University The Fairchild Tropical Botanic Garden

Zhang and collaborators [1] demonstrated that bees of the genus Ctenoplectra collect oil from the newly reported oilreward orchids of the genera Dendrobium and Galeola in Asia, and that the majority of the bees that carry out this act and pollinate the orchids are male. These are new discoveries with significant implications for biodiversity conservation.

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Optical Microsphere Nano-Imaging:Progress and Challenges

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Engineering 2024年第5期36卷 102-123页

作者： Guangxing Wu Minghui hong Department of Electrical and Computer Engineering National University of SingaporeSingapore 117576Singapore Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China

The optical diffraction effect imposes a radical obstacle preventing conventional optical microscopes from achieving an imaging resolution beyond the Abbe diffraction limit and thereby restricting their usage in a multitude of nanoscale *** the past decade,the optical microsphere nanoimaging technique has been demonstrated to be a cost-effective solution for overcoming the diffraction limit and has achieved an imaging resolution of up to about k6k8 in a real-time and label-free manner,making it highly competitive among numerous super-resolution imaging *** this review,we summarize the underlying nano-imaging mechanisms of the microsphere nanoscope and key advancements aimed at imaging performance enhancement:first,to change the working environment or modify the peripheral hardware of a single microsphere nanoscope at the system level;second,to compose the microsphere compound lens;and third,to engineer the geometry or ingredients of *** also analyze challenges yet to be overcome in optical microsphere nano-imaging,followed by an outlook of this technique.

关键词： Microsphere Nano-imaging Virtual imaging Microsphere compound lens Engineered microsphere

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Dynamic plugging regulating strategy of pipeline robot based on reinforcement learning

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Petroleum Science 2024年第1期21卷 597-608页

作者： Xing-Yuan Miao hong Zhao College of Mechanical and Transportation Engineering China University of PetroleumBeijing102249China

Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the pipeline and PIPR. In this paper, we propose a dynamic regulating strategy to reduce the plugging-induced vibration by regulating the spoiler angle and plugging velocity. Firstly, the dynamic plugging simulation and experiment are performed to study the flow field changes during dynamic plugging. And the pressure difference is proposed to evaluate the degree of flow field vibration. Secondly, the mathematical models of pressure difference with plugging states and spoiler angles are established based on the extreme learning machine (ELM) optimized by improved sparrow search algorithm (ISSA). Finally, a modified Q-learning algorithm based on simulated annealing is applied to determine the optimal strategy for the spoiler angle and plugging velocity in real time. The results show that the proposed method can reduce the plugging-induced vibration by 19.9% and 3..7% on average, compared with single-regulating methods. This study can effectively ensure the stability of the plugging process.

关键词： Pipeline isolation plugging robot Plugging-induced vibration Dynamic regulating strategy Extreme learning machine Improved sparrow search algorithm Modified Q-learning algorithm

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Coupling analysis method of grouting construction with deformation response of adjacent existing tunnel

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Underground Space 2024年第2期15卷 312-330页

作者： Ping-wei Jiang Zhi-hong Zhang hong Zheng Jin-kun Huang Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education Beijing University of TechnologyBeijing 100124China China MCC17 Group Co.LTD MaanshanAnhui 243000China School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In the new tunnel under close distance through the existing tunnel risk source,the grouting scheme developed to compensate for stratum losses is still based on empirical methods,relying on the overburden thickness of existing *** can potentially lead to an excessively high or low probability of uplift of existing *** a coupled deformation analysis method between the grouting construction and adjacent existing tunnels is of great theoretical significance for developing grouting *** order to reasonably limit the design parameters of grouting construction,based on the theory of fluid–solid coupling elastic pore-column expansion and the theory of random media,the calculation method of stratum displacement which simultaneously considers the coexistence of grout compaction expansion and permeability diffusion mode is derived,and the accuracy of the calculation method is verified by engineering *** accuracy of this calculation method was verified through engineering *** with the deformation coordination condition,the existing tunnel is regarded as an elastic Euler-Bernoulli continuous beam,and the finite element coupling balance equation of the interaction between the existing tunnel and the surrounding soil is *** on this,a coupling calculation model of the grouting construction and the deformation response of the adjacent existing tunnel is *** with three times of grouting construction examples in the shield tunneling project of Beijing Metro Line 12 under the existing airport line,the reliability of the coupling calculation model to determine the grouting construction parameters is *** calculation parameters in the coupling calculation model have clear physical meanings,which can provide a theoretical basis for the grouting design of similar risk source projects.

关键词： Grouting Close-range underpass Tunnel Random medium theory Euler-Bernoulli continuous beam

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