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Multi-walled carbon nanotubes based catalyst plasmon resonance light scattering analysis of tetracycline hydrochloride

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Science China Chemistry 2008年第9期51卷 866-871页

作者： hu po huANG ChengZhi ZHANG Li College of Chemistry and Chemical Engineering MOE Key Laboratory on Luminescence and Real-Time AnalysisSouthwest Uni-versityChongqing 400715China

It was found that multi-walled carbon nanotubes (MWNTs) could catalyze the redox reaction between chlorauric acid (HAuCl4) and reductive drugs such as tetracycline hydrochloride (TC), producing gold nanoparticles (Au NPs). By measuring the plasmon resonance light scattering (PRLS) signals of the resulting Au NPs, tetracycline hydrochloride can be detected simply and rapidly with a linear range of 4―26 μmol/L, a correlated coefficient (r ) of 0.9955, and a limit of detection (3σ) of 6.0 nmol/L. This method has been successfully applied to the detection of tetracycline hydrochloride tablets in clinic with the recovery of 101.9% and that of fresh urine samples with the recovery of 98.3%―102.0%.

关键词： MWNTs chlorauric acid tetracycline hydrochloride plasmon resonance light scattering

Finding Nuggets in Patent portfolios: Core Patent Mining and Its Applications

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Tsinghua Science and Technology 2013年第4期18卷 339-352页

作者： po hu Minlie huang Xiaoyan Zhu the Department of Computer Science and Technology Tsinghua University

Patents are critically important for a company to protect its core business concepts and proprietary technologies. Effective patent mining in massive patent databases not only provides business enterprises with valuable insights to develop strategies for research and development, intellectual property management, and product marketing, but also helps patent offices to improve efficiency and optimize their patent examination processes. This paper describes the patent mining problem of automatically discovering core patents （i.e., novel and influential patents in a domain）. In addition, the value of core patent mining is illustrated by revealing the potential competitive relationships among companies in their core patents. The work addresses the unique patent vocabulary usage which is not considered in traditional word-based statistical methods with a topic-based temporal mining approach that quantifies a patent＇s novelty and influence through topic activeness variations. Tests of this method on real-world patent portfolios show the effectiveness of this approach over state-of-the-art methods.

关键词： text mining core patent patent novelty patent influence company competitor

Nonlinear dynamics of Kuroshio intrusion in the Luzon Strait

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Science China Earth Sciences 2017年第4期60卷 761-769页

作者： HOU YiJun LIU YaHao hu po WANG Zheng Key Laboratory of Ocean Circulation and Waves Lnstitute of OceanologyChinese Academy of Sciences Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and Technology

This study used a 1.5-layer reduced-gravity numerical model to investigate the nonlinear dynamics of Kuroshio intrusion into the Luzon *** model results suggested that both basin-scale wind curl and lateral friction are the primary factors that control the transformation of the flow,although inertia also plays an important *** an idealized model,both the mechanism via which the flow pattern changes depending on the two primary factors and the occurrence of hysteresis were *** was established that the transformation of the Kuroshio flow field between the four previously reported flow patterns(i.e.,leaping across,current looping,eddy shedding,and branch intruding) can be explained under a unified theoretical framework.A diagram is proposed to explain how the flow field transforms between the four patterns from a certain prior state when varying the values of the controlling factors.

关键词： Drought index Regional applicability Terrestrial water storage Soil moisture Streamflow

Nonlinear excitation controller design for power systems:an I&I approach

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控制理论与应用（英文版） 2012年第4期10卷 554-558页

作者： Rongxiang YUAN Yang RUAN po hu School of Electrical Engineering Wuhan University

The Immersion and Invariance （I＆I） methodology provides a novel approach for nonlinear system control, which is distinct from the traditional feedback linearization and backstepping method. In this paper, a new excitation controller is designed for single machine infinite bus system （SMIBS） based on the I＆I approach. Firstly the dynamic model of SMIBS is homeomorphously transformed to a specific form for which a stable lower-order target system is selected. Then the I＆I excitation controller is designed by immersing the transformed system into the target system. Simulation results from PSCAD/EMTDC demonstrate that the proposed controller guarantees transient stability of the system after large disturbances.

关键词： power systems Excitation control Nonlinear control Immersion and invariance

GraphFlow+:Exploiting Conversation Flow in Conversational Machine Comprehension with Graph Neural Networks

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Machine Intelligence Research 2024年第2期21卷 272-282页

作者： Jing hu Lingfei Wu Yu Chen po hu Mohammed J.Zaki School of Computer Science Central China Normal UniversityWuhan 430079China Pinterest San Francisco 94016USA Meta Mountain View 94039USA Rensselaer polytechnic Institute Troy 12180USA

The conversation machine comprehension(MC)task aims to answer questions in the multi-turn conversation for a single ***,recent approaches don’t exploit information from historical conversations effectively,which results in some references and ellipsis in the current question cannot be *** addition,these methods do not consider the rich semantic relationships between words when reasoning about the passage *** this paper,we propose a novel model GraphFlow+,which constructs a context graph for each conversation turn and uses a unique recurrent graph neural network(GNN)to model the temporal dependencies between the context graphs of each ***,we exploit three different ways to construct text graphs,including the dynamic graph,static graph,and hybrid graph that combines the *** experiments on CoQA,QuAC and DoQA show that the GraphFlow+model can outperform the state-of-the-art approaches.

关键词： Conversational machine comprehension(MC) reading comprehension question answering graph neural networks(GNNs) natural language processing(NLP)

Heterogeneous Network Embedding: A Survey

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 83-130页

作者： Sufen Zhao Rong Peng po hu Liansheng Tan School of Computer Science Wuhan UniversityWuhan430072China School of Computer Science Central China Normal UniversityWuhan430079China

Real-world complex networks are inherently heterogeneous;they have different types of nodes,attributes,and *** recent years,various methods have been proposed to automatically learn how to encode the structural and semantic information contained in heterogeneous information networks(HINs)into low-dimensional embeddings;this task is called heterogeneous network embedding(HNE).Efficient HNE techniques can benefit various HIN-based machine learning tasks such as node classification,recommender systems,and information ***,we provide a comprehensive survey of key advancements in the area of ***,we define an encoder-decoder-based HNE model ***,we systematically overview,compare,and summarize various state-of-the-art HNE models and analyze the advantages and disadvantages of various model categories to identify more potentially competitive HNE *** also summarize the application fields,benchmark datasets,open source tools,andperformance evaluation in ***,wediscuss open issues and suggest promising future *** anticipate that this survey will provide deep insights into research in the field of HNE.

关键词： Heterogeneous information networks representation learning heterogeneous network embedding graph neural networks machine learning

Fronts,baroclinic transport,and mesoscale variability of the Antarctic Circumpolar Current in the southeast Indian Ocean

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Acta Oceanologica Sinica 2012年第6期31卷 1-11页

作者： DUAN Yongliang HOU Yijun LIU Hongwei hu po Institute of Oceanology Chinese Academy of SciencesQingdao 266071China Key Laboratory of Ocean Circulation and Waves Chinese Academy of SciencesQingdao 266071 China University of Chinese Academy of Sciences Beijing 100049China

Fronts, baroclinic transport, and mesoscale variability of the Antarctic Circumpolar Current （ACC） along 115°E are examined on the basis of CTD data from two hydrographic cruises occupied in 1995 as a part of the World Ocean Circulation Experiment （WOCE cruise I9S） and in 2004 as a part of CLIVAR/CO2 repeat hydrography program. The integrated baroclinic transport across I9S section is （97.2×106±2.2×106） m3/s relative to the deepest common level （DCL）. The net transport at the north end of I9S, determined by the south Australian circulation system, is about 16.5× 106 m3/s westward. Relying on a consistent set of water mass criteria and transport maxima, the ACC baroclinic transport, （117×106±6.7×106） m3/s to the east, is carried along three fronts： the Subantarctic Front （SAF） at a mean latitude of 44°-49°S carries （50.6×106=t=13.4×106） m3/s; the polar Front （PF）, with the northern branch （PF-N） at 50.5°S and the southern branch （PF- S） at 58°S, carries （51.3×106±8.7×106） m3/s; finally, the southern ACC front （SACCF） and the southern boundary of the ACC （SB） consist of three cores between 59°S and 65°S that combined carry （15.2× 106±1.8× 106） m3/s. Mesoscale eddy features are identifiable in the CTD sections and tracked in concurrent maps of altimetric sea level anomalies （SLA） between 44°-48°S and 53°-57°S. Because of the remarkable mesoseale eddy features within the SAF observed in both the tracks of the cruises, the eastward transport of the SAF occurs at two latitude bands separating by 1°. Both the CTD and the altimetric data suggest that the mesoscale variability is concentrated around the Antarctic polar Frontal Zone （APFZ） and causes the ACC fronts to merge, diverge, and to fluctuate in intensity and position along their paths.

关键词： Antarctic Circumpolar Current fronts transport eddies

Studies on marine dynamic disasters

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Journal of Oceanology and Limnology 2019年第6期37卷 1791-1794页

作者： hu po LIU Yahao HOU Yijun Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

Marine dynamic disasters,including storm surges,huge waves,and sea ice,are the most harmful natural disasters aff ecting coastal countries in the *** the infl uence of global climate change,the mechanisms,frequencies,and damage severity of marine dynamic disasters are exhibiting new *** enormity,unpredictability,and chain eff ects of these disasters have become increasingly prominent,and the losses endured by coastal countries around the world have been increasing year by ***,the prediction of,risk assessment for,and emergency response to marine dynamic disasters are important issues for disaster prevention and mitigation worldwide.

关键词： marine dynamic disasters storm surges huge waves

Volume transport in the East Taiwan Channel in response to diff erent tracks of typhoons as revealed by HYCOM data

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Journal of Oceanology and Limnology 2022年第1期40卷 22-36页

作者： Yuanshou HE po hu Bing YANG Yuqi YIN Yijun HOU CAS Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Ocean and Climate Dynamics Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Northward infl ow through the East Taiwan Channel is vital in modulation of water exchange processes off northeastern Taiwan,*** addition to the eff ects of the Kuroshio Current and westward-propagating oceanic mesoscale eddies,the seas off eastern Taiwan,China,are frequently infl uenced by *** on extrema of East Taiwan Channel volume transport(ETCVT)that appear within days of typhoon infl uence,this study investigated 124 historical cyclones including 91 typhoons that passed over the study sea area off eastern Taiwan,*** on 25-year HYbrid Coordinate Ocean Model(HYCOM)data,71%of short-term(within 10 d)ETCVT absolute values with>5 Sv occurred under the infl uence of typhoons crossing the study sea area,and the maximum short-term ETCVT extrema induced by typhoons were 12.5 and-10.9 *** ETCVT extrema induced by typhoons showed reasonable positive correlation with typhoon wind *** importantly,the ETCVT extrema diff ered in response to diff erent typhoon *** types of typhoon were identifi ed based on their track and impact on *** typhoon cases were examined to elucidate the specifi cs of each typical *** on historical best track data and HYCOM data,it was established that Type I typhoons caused the ETCVT to exhibit a negative extremum followed by a positive *** Type I,II,and III typhoons tended to result in typical ETCVT fl uctuations in the surface mixing layer above the depth of 50-100 m,while Type II typhoons were more likely to induce ETCVT fl uctuations in the subsurface *** fi ndings of this study enhance understanding of ETCVT extrema that occur following typhoon passage,which is valuable for short-term physical-biogeochemical studies both in the study region and in areas downstream owing to the large net volume transport changes induced by typhoons.

关键词： ocean modeling East Taiwan Channel volume transport extrema typhoon