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The Development of Modern Pesticides

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Chemical Research in Chinese Universities 2002年第4期18卷 481-490页

作者： harry R.Hudson WU Jun XU Wei-liang Division of Chemistry School of Biological and Applied SciencesUniversity of North LondonLondon N78DBUK department of Chemistry Zhejiang UniversityHangzhou 310027P.R.China

The present paper deals with agrochemicals. The low toxicities to mammals and wild lives, greater selectivity against target organisms, and high levels of activity are particular features of many modern agrochemicals. It is suggested that integrated pest management(IPM), by means of a combination of biological and chemical controls has met with some success and the present approach is to optimize the use of chemicals rather than to eliminate them.

关键词： Advance Agrochemicals Insecticides Fungicides Herbicide Biological control

Influences of perfluorooctanoic acid on the aggregation of multi-walled carbon nanotubes

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Journal of Environmental Sciences 2013年第3期25卷 466-472页

作者： Chengliang Li Andreas Schffer harry Vereecken Marc Heggen Rong Ji Erwin Klumpp College of Resources and Environment Shandong Agricultural University National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources Biology 5-Environmental Biology and Chemodynamics RWTH Aachen University Agrosphere Institute (IBG-3) Forschungszentrum Jlich GmbH Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum Jlich State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing University Institute for Climate and Global Change Research Nanjing University

The aggregation of multi-walled carbon nanotubes （MWCNTs） in the aqueous phase not only inhibits their extensive utilization in various aspects but also dominates their environmental fate and *** role of surfactants at low concentration in the aggregation of MWCNTs has been studied,however the effect of perfluorinated surfactants at low concentration is *** understand this interfacial phenomenon,the influences of perfluorooctanoic acid （PFOA）,and sodium dodecyl sulfate （SDS） as a control,on MWCNT aggregation in the aqueous phase were examined by the UV absorbency *** of pH and cationic species on the critical coagulation concentration （CCC） value were *** CCC values were dependent on the concentration of PFOA,however a pronounced effect of SDS concentration on the CCC values was not *** CCC values of the MWCNTs were 51.6 mmol/L in NaCl and 0.28 mmol/L in CaCl 2 solutions,which suggested pronounced differences in the effects of Na＋ and Ca2＋ ions on the aggregation of the *** presence of both PFOA and SDS significantly decreased the CCC values of the MWCNTs in NaCl *** aggregation of the MWCNTs took place under acidic conditions and was not notably altered under neutral and alkaline conditions due to the electrostatic repulsion of deprotonated functional groups on the surface of the MWCNTs.

关键词： perfluorooctanoic acid aggregation multi-walled carbon nanotubes

A robust WENO scheme for nonlinear waves in a moving reference frame

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Journal of Hydrodynamics 2016年第3期28卷 482-488页

作者： Stavros KONTOS harry B.BINGHAM Ole LINDBERG Allan P.ENGSIG-KARUP department of Mechanical Engineering Technical University of DenmarkDenmark department of Applied Mathematics and Computer Science Technical University of DenmarkDenmark

For robust nonlinear wave simulation in a moving reference frame, we recast the free surface problem in Hamilton-Jacobi form and propose a Weighted Essentially Non-Oscillatory （WENO） scheme to automatically handle the upwinding of the convective term. A new automatic procedure for deriving the linear WENO weights based on a Taylor series expansion is introduced. A simplified smoothness indicator is proposed and is shown to perform well. The scheme is combined with high-order explicit Runge-Kutta time integration and a dissipative Lax-Friedrichs-type flux to solve for nonlinear wave propagation in a moving frame of reference. The WENO scheme is robust and less dissipative than the equivalent order upwind-biased finite difference scheme for all ratios of frame of reference to wave propagation speed tested. This provides the basis for solving general nonlinear wave-structure interaction problems at forward speed.

关键词： nonlinear waves Weighted Essentially Non-Oscillatory (WENO) finite difference

Gut Microbiome in Colorectal Cancer:Clinical Diagnosis and Treatment

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Genomics, Proteomics & Bioinformatics 2023年第1期21卷 84-96页

作者： Yali Liu harry Cheuk-Hay Lau Wing Yin Cheng Jun Yu Institute of Digestive Disease and The department of medicine and Therapeutics State Key Laboratory of Digestive DiseaseLi Ka Shing Institute of Health SciencesCUHK Shenzhen Research InstituteThe Chinese University of Hong KongHong Kong Special Administrative Region 999077China

Colorectal cancer(CRC)is one of the most frequently diagnosed cancers and the leading cause of cancer-associated *** studies have shown that both genetic and environmental risk factors contribute to the development of *** metagenomic studies of CRC have identified gut dysbiosis as a fundamental risk factor in the evolution of colorectal *** enormous efforts and substantial progresses have been made in understanding the relationship between human gut microbiome and CRC,the precise mechanisms involved remain *** data have shown a direct causative role of the gut microbiome in DNA damage,inflammation,and drug resistance in CRC,suggesting that modulation of gut microbiome could act as a powerful tool in CRC prevention and ***,we provide an overview of the relationship between gut microbiome and CRC,and explore relevant mechanisms of colorectal *** next highlight the potential of bacterial species as clinical biomarkers,as well as their roles in therapeutic *** limiting the clinical translation of gut microbiome and strategies for resolving current challenges are further discussed.

关键词： Gut microbiome Colorectal cancer Diagnostic biomarker Immunotherapy Chemotherapy

Content-Based Publish/Subscribe System for Web Syndication

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Journal of Computer Science & Technology 2016年第2期31卷 359-380页

作者： Zeinab Hmedeh harry Kourdounakis Vassilis Christophides Cedric du Mouza Michel Scholl Nicolas Travers CEDRIC Laboratory Conservatoire National des Arts et Metiers Paris 75141 France FORTH//ICS University of Crete Heraklion GR-70013 Greece

Content syndication has become a popular way for timely delivery of frequently updated information on the Web. Today, web syndication technologies such as RSS or Atom are used in a wide variety of applications spreading from large-scale news broadcasting to medium-scale information sharing in scientific and professional communities. However, they exhibit serious limitations for dealing with information overload in Web 2.0. There is a vital need for efficient real- time filtering methods across feeds, to allow users to effectively follow personally interesting information. We investigate in this paper three indexing techniques for users＇ subscriptions based on inverted lists or on an ordered trie for exact and partial matching. We present analytical models for memory requirements and matching time and we conduct a thorough experimental evaluation to exhibit the impact of critical parameters of realistic web syndication workloads.

关键词： pub/sub subscription indexing web syndication partial matching scalability

Numerical modelling of resonance mechanisms in jointed rocks using transfer functions

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第5期15卷 1076-1089页

作者： harry Holmes Chrysothemis Paraskevopoulou Mark Hildyard Krishna Neaupane David P.Connolly School of Earth and Environment University of LeedsLeedsLS29JTUK AECOM Ltd. ChesterfieldS417SLUK

Resonance effects in parallel jointed rocks subject to stress waves are investigated using transfer functions,derived from signals generated through numerical *** is important for a range of engineering situations as it identifies the frequency of waves which will be favourably *** different numerical methods are used for this study,adopting the finite difference method and the combined discrete element-finite difference *** numerical models are validated by replicating results from previous *** two methods are found to behave similarly and show the same resonance effects;one operating at low frequency and the other operating at relatively high *** resonance effects are interpreted in terms of simple physical systems and analytical equations are derived to predict the resonant frequencies of complex rock *** frequency resonance is shown to be generated by a system synonymous with masses between springs,described as spring resonance,with an equal number of resonant frequencies as the number of *** frequency resonance is generated through superposition of multiple reflected waves developing standing waves within intact blocks,described as superposition *** resonance through superposition has previously been identified,resonance based on masses between springs has not been previously identified in jointed *** findings of this study have implications for future analysis of multiple jointed rock masses,showing that a wave travelling through such materials can induce other modes of propagation of waves,*** resonance.

关键词： Resonance Jointed rocks Finite difference method Discrete element Transfer functions Wave propagation

Multi-state supernetworks:recent progress and prospects

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Journal of Traffic and Transportation Engineering(English Edition) 2014年第1期1卷 13-27页

作者： Feixiong Liao Theo Arentze harry Timmermans Urban Planning Group Eindhoven University of TechnologyEindhovenNorth BrabontNetherlands

Supernetworks have long been adopted to address multi-dimensional choice problems, which are thorny to solve for classic singular networks. Originated from combining transport mode and route choice into a multi-modal network, supernetworks have been extended into multi-state networks to include activity-travel scheduling, centered around activity-based models of travel demand. A key feature of the network extensions is that multiple choice facets pertaining to conducting a full activity program can be modeled in a consistent and integrative fashion. Thus, interdependencies and constraints between related choice facets can be readily captured. Given this advantage of integrity, the modeling of supernetwork has become an emerging topic in transportation research. This paper summarizes the recent progress in modeling multi-state supernetworks and discusses future prospects.

关键词： supernetwork multi-modal multi-state activity-based models

Highly-Ordered Ferroelectric Photonic Crystals

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光学学报 2003年第S1期23卷 149-150页

作者： Naomi Matsuura harry E. Ruda Center for Advanced Nanotechnology University of Toronto Toronto Ontario M5S 3E3 CanadaCenter for Advanced Nanotechnology University of Toronto Toronto Ontario M5S 3E3 Canada

Highly-ordered, ferroelectric, Pb-doped Ba0.7Sr0.3TiO3, inverse opal thin films were fabricated using a sol-gel spin coating technique. The excellent crystal quality is evident from the SEM images and the good agreeme... 详细信息

关键词： were be SEM into high Highly-Ordered Ferroelectric Photonic Crystals Figure from of BST view or Pb that

One decade(2011–2020)of European agricultural water stress monitoring by MSG-SEVIRI:workflow implementation on the Virtual Earth Laboratory(VLab)platform

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International Journal of Digital Earth 2022年第1期15卷 730-747页

作者： Bagher Bayat Carsten Montzka Alexander Graf Gregory Giuliani Mattia Santoro harry Vereecken Institute of Bio-and Geosciences:Agrosphere (IBG-3) Forschungszentrum Jülich GmbHJülichGermany Institute for Environmental Sciences EnviroSPACE labUniversity of GenevaGenevaSwitzerland Institute of Atmospheric Pollution Research National Research Council of Italy (CNR)Sesto FiorentinoItaly

Cloud computing facilities can provide crucial computing support for processing the time series of satellite data and exploiting their spatio-temporal information ***,dedicated efforts are still required to develop workflows,executable on cloud-based platforms,for ingesting the satellite data,performing the targeted processes,and generating the desired *** this study,an operational workflow is proposed,based on monthly Evaporative Stress Index(ESI)anomaly,and implemented in cloud-based online Virtual Earth Laboratory(VLab)platform,as a demonstration,to monitor European agricultural water *** this end,daily time-series of actual and reference evapotranspiration(ETa and ET0),from the Spinning Enhanced Visible and Infrared Imager(SEVIRI)sensor,were used to execute the proposed workflow successfully on *** execution of the workflow resulted in obtaining one decade(2011–2020)of European monthly agricultural water stress maps at 0.04˚spatial resolution and corresponding stress reports for each *** support open science,all the workflow outputs are stored in GeoServer,documented in GeoNetwork,and made available through *** enables creating a dashboard for better visualization of the results for *** results from this study demonstrate the capability of VLab platform for water stress detection from time series of SEVIRI-ET data.

关键词： ET SEVIRI ESI water stress workflow Europe VLab demonstration