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Testing semiochemicals from aphid, plant and conspecific： attraction of Harmonia axyridis

Insect Science 2012年第3期19卷 372-382页

作者： Pascal D. leroy Thomas Schillings Julien Farmakidis Stephanie Heuskin Georges Lognay Francois J. Verheggen Yves Brostaux Eric Haubruge Frederic Francis Departments of Functional and Evolutionary Entomology Departments of Analytical Chemistry Departments of Applied Statistics Computer Science and Mathematics University of Liege Gembloux Agro-Bio Tech Gembloux Belgium

Harmonia axyridis Pallas （Coleoptera： Coccinellidae） is an invasive specie affecting the dynamics and composition of several guilds. Nowadays, no biological control method is available to reduce the populations of this harmful coccinellid. Attractants and semiochemicals seem to be the best alternative but only few studies have tested the impact of semiochemicals on this Asian lady beetle. In this work, through wind- tunnel experiments, semiochemicals from aphids （Z,E-nepetalactone, [E]-β-farnesene, a-pinene and β-pinene）, from coccinellids （[-]-β-earyophyllene） and from the nettle Urtica dioica L. were evaluated as potential attractants. The nettle volatile compounds （[Z]-3- hexenol and [E]-2-hexenal） were extracted using a Clevenger Apparatus and identified by headspace gas chromatography-mass spectroscopy. In the wind-tunnel experiments, the main components of the aphid alarm pheromone as well as a component of the aphid sexual pheromone strongly attracted both sexes of the Asian lady beetle while （-）-β- caryophyllene only attracted few individuals and had no impact on the males. The nettle extract as well as the （Z）-3-hexenol oriented both males and females to the odor source. The （E）-2-hexenal was shown to have no effect on females even if this green leaf volatile attracted males. Because Z,E-nepetalactone was identified as the most efficient attractant in the wind-tunnel experiments, this volatile was also tested in a potato field where H. axyridis has been showed to respond to this semiochemical. This study highlighted that Z,E-nepetalactone orientated the Asian lady beetle H. axyridis under natural condi- tions, indicating that this volatile compound could certainly help for an efficient biological control approach against this invasive specie.

关键词： aphids attractant Harmonia axyridis plant semiochemicals wind-tunnel

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Functional Materials Design by Encapsulation of Dynamic Templates in Polyoxometalate Cages

Functional Materials Design by Encapsulation of Dynamic Temp...

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中国化学会第五届全国结构化学学术会议

作者： leroy Cronin Department of Chemistry University of Glasgow GlasgowG12 8QQUK

＜正＞Polyoxometalate（POM）chemistry has attracted enormous attention due to POM’s appealing electronic and molecular properties that give rise to many applications in *** or materials *** their physical properties intricately linked to their structural features,the creation of novel POM structural types remains a pressing

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Response of C and N cycles to N fertilization in Sphagnum and Molinia-dominated peat mesocosms

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Journal of Environmental Sciences 2019年第3期31卷 264-272页

作者： Fabien leroy Sébastien Gogo Christophe Guimbaud André-Jean Francez Renata Zocatelli Christian Défarge Léonard Bernard-Jannin Zhen Hu Fatima Laggoun-Défarge University of Orleans ISTO CNRS ISTO BRGM ISTO University of Orleans LPC2E CNRS LPC2E UMR CNRS 6553 ECOBIO University of Rennes 1 University of Orleans Cellule R&D CETRAHE School of Environmental Science and Engineering Shandong University

Plant communities play an important role in the C-sink function of peatlands. However,global change and local perturbations are expected to modify peatland plant communities,leading to a shift from Sphagnum mosses to vascular plants. Most studies have focused on the direct effects of modification in plant communities or of global change(such as climate warming, N fertilization) in peatlands without considering interactions between these disturbances that may alter peatlands' C function. We set up a mesocosm experiment to investigate how Greenhouse Gas(CO_2, CH_4, N_2O) fluxes, and dissolved organic carbon(DOC)and total dissolved N(TN) contents are affected by a shift from Sphagnum mosses to Molinia caerulea dominated peatlands combined with N fertilization. Increasing N deposition did not alter the C fluxes(CO_2 exchanges, CH_4 emissions) or DOC content. The lack of N effect on the C cycle seems due to the capacity of Sphagnum to efficiently immobilize N. Nevertheless, N supply increased the N_2O emissions, which were also controlled by the plant communities with the presence of Molinia caerulea reducing N_2O emissions in the Sphagnum mesocosms. Our study highlights the role of the vegetation composition on the C and N fluxes in peatlands and their responses to the N deposition. Future research should now consider the climate change in interaction to plants community modifications due to their controls of peatland sensitivity to environmental conditions.

关键词： CO2 and CH4 N2O Peatland Plant community composition Sphagnum moss Graminoid

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Encapsulation of High Oxidation State Templates in Polyoxotungstes for Oxidation Catalytic Application

Encapsulation of High Oxidation State Templates in Polyoxotu...

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中国化学会第26届学术年会无机与配位化学分会场

作者： leroy Cronin Department of Chemistry University of Glasgow Glasgow G12 8QQ UK

＜正＞Polyoxometalate （POM） chemistry has attracted enormous attention due to POM’s appealing electronic and molecular properties that give rise to many applications in e.g. catalysis or materials science. With their

关键词： Polyoxometalate Tungstatoperiodate Cluster compounds Oxidation catalysts

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Surrealism

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作者： Cathrin Klingsohr-leroy Uta Grosenick (Ed.) English translation Isabel Varea.

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Relationships between mucinous gastric carcinoma, MUC2 expression and survival

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World Journal of Gastroenterology 2006年第21期12卷 3324-3331页

作者： Emmanuelle Leteurtre Farid Zerimech Guillaume Piessen Agnès Wacrenier Xavier leroy Marie-Christine Copin Christophe Mariette Jean-Pierre Aubert Nicole Porchet Marie-Pierre Buisine INSERM U560 59045Lille cedexFrance Service d'Anatomie et Cytologie Pabologiques Pôle Biologie-Pathogie Pac Eurasanté.CHR-U de Lille59037 Lille cedexFrance Service de Biochimie et Biologie Moléculaire CHR-U de Lille59037 Lille cedexFrance Facultéde Médecine H.Warembourg 59045 Lille cedexFrance Service.de Chirurgie Digetive et Générale CAEB CHR-U de Lille59045 Lille cedexFrance

AIM:To investigate the expression of the four secreted gel-forming mucins(MUC2,MUCSAC,MUCSB and MUC6)in a series of gastric carcinomas,classified according Laurén's,Mulligan's,WHO and Goseki's classifications,with special attention to all the different components(major and minor)present in tumors and to follow up clinical ***:Expression of MUC2,MUC5AC,MUC5B and MUC6 was investigated using immunohistochemistry and in situ ***:Expression of secreted gel-forming mucins in gastric carcinoma was particularly complex,each mucin being not restricted to any histopathological type even considering all components(major and minor)present in a given *** was a worst survival in patients with a higher content of mucus(GosekiⅡorⅣ)and high positive MUC2 ***:Complexity of mucin gene expression patterns in gastric cancer may reflect a precise state of differentiation at the cell level not recognized in used morphologic classification *** expression of MUC2 was nevertheless associated with mucinous subtype of the WHO classification and with groupⅡof Goseki's classification identified by the major component of a particular *** quantity and quality of mucus were related to survival.

关键词： Gastric cancer Secreted gel-forming mucin MUC Immunohistochemistry in situ hybridization Survival

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Oracle8i Java组件编程第1版

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丛书名： Oracle技术系列丛书

2002年

作者：（美）Nirva Morisseau-leroy等

本书介绍如何使用Java组件编程和Oracle8i数据库，开发基于Internet的企业级应用，主要内容包括组件编程技术的基础知识，企业JavaBean的概念和使用等。

ISBN: (纸本)7980007344;7111093356

本书介绍如何使用Java组件编程和Oracle8i数据库，开发基于Internet的企业级应用，主要内容包括组件编程技术的基础知识，企业JavaBean的概念和使用等。

关键词： Database management

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Peripapillary intrachoroidal cavitation at the crossroads of peripapillary myopic changes

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International Journal of Ophthalmology(English edition) 2023年第12期16卷 2063-2070页

作者： Adele Ehongo Zaki Hasnaoui Nacima Kisma Yassir Alaoui Mhammedi Artemise Dugauquier Kevin Coppens Eloise Wellens Viviane de Maertelaere Francoise Bremer Karelle leroy Hopital Erasme Bruxelles 1070Belgium Cosma Consulting Sijsjesdreef 13 Enghien 7850Belgium UniversitéLibre de Bruxelles Bruxelles 1070Belgium Biostatistics IRIBHM UniversitéLibre de BruxellesBruxelles 1070Belgium Laboratory of Histology UniversitéLibre de BruxellesBruxelles 1070Belgium

AIM:To analyze the prevalence of peripapillary intrachoroidal cavitation(PICC)in eyes with gamma peripapillary atrophy(γPPA),in eyes with peripapillary staphyloma(PPS)and in those combiningγPPA and PPS and to analyze border tissue discontinuity in ***:This prospective cross-sectional non interventional study included highly myopic ***-highly myopic eyes were used as *** and linear scans centered on the optic nerve head were performed using spectral-domain optical coherence *** were analyzed along the twelve hourly optical coherence tomography sections in both eyes of each ***:A total of 667 eyes of 334 subjects were included:229(34.3%)highly myopic eyes and 438(65.7%)non highly myopic *** mean age of the highly myopic group was 48.99±*** was found in a total of 40 eyes and in 13.2%(29/220)of highly myopic *** was found in 10.4%(40/386)of eyes withγPPA,in 20.5%(40/195)of eyes with PPS and in 22.7%(40/176)of those combiningγPPA and *** the eyes with PICC showed the co-existence ofγPPA and PPS whereas none of the eyes presenting only one of these entities exhibited PICC.A border tissue discontinuity in theγPPA area was found in all eyes with ***:We confirm the presence of a border tissue discontinuity in theγPPA area of all eyes with *** findings suggest the involvement of mechanical factors in the pathogenesis of PICC which may contribute to PICC-related visual field defects.

关键词： myopia peripapillary intrachoroidal cavitation peripapillary staphyloma gamma peripapillary atrophy border tissue myopic complications

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Honeydew volatile emission acts as a kairomonal message for the Asian lady beetle Harmonia axyridis （Coleoptera： Coccinellidae）

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Insect Science 2012年第4期19卷 498-506页

作者： Pascal D. leroy Stephanie Heuskin Ahmed Sabri Fran( ois J. Verheggen Julien Farmakidis Georges Lognay Philippe Thonart Jean-Paul Wathelet Yves Brostaux Eric Haubruge Departments of Functional and Evolutionary Entomology Departments of Analytical Chemistry University of Liege Gembloux Agro-BioTech Walloon Center of Industrial Biology University of Liege B40 4000 Sart-Tilman Departments of General and Organic Chemistry Departments of Appfied Statistics Computer Science and Mathematics University of Liege Gembloux Agro-Bio Tech Gembloux Belgium

The Asian lady beetle Harmonia axyridis Pallas is considered as an invasive species in most territories where it has been introduced. Because aphid honeydew acts as an attraetant for many aphid predators and parasitoids, the objectives of this work were to collect and identify the volatile compounds released from the aphid excretory product to evaluate how these semiochemicals could affect the H. axyridis foraging behavior. Twelve volatile chemicals were identified from the Megoura viciae Buckton honeydew including four alcohols, three ketones, three aldehydes, a pyrazine and a monoterpene. The volatiles 3-methyl-l-butanol and 3-methyl-butanal were highlighted as the two most abundant semiochemicals released from the M. viciae honeydew. Vieia faba L. plants treated with crude honeydew attracted more than 80% of the tested individuals with 40% of attracted beetles located on the plant. Four volatile compounds （3-hydroxy-2-butanone, 3-methyl-butanal, 3-methyl-1-butanol and limonene） were also highlighted to attract more than 75% of the coccinellids toward the odor source and to locate about 35% of them on the plants. Limonene was the most efficient attractant since 89% of the H. axyridis responded to this odor. The use of the identified semiochemicals as well as the composition of an artificial honeydew could certainly be helpful to control the dispersal of the Asian lady beetle H. axyridis.

关键词： aphid honeydew attractant Harmonia axyridis kairomone semiochemicals

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焊接箱形截面不锈钢柱相关稳定性能分析

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工程力学 2015年第9期32卷 84-91页

作者：袁焕鑫王元清石永久朱一锋 Gardner leroy 武汉大学土木建筑工程学院武汉430072 清华大学土木工程系北京100084 无锡东宝机械制造有限公司无锡214181 Department of Civil and Environmental Engineering Imperial College London

采用有限元法对焊接箱形截面不锈钢柱的局部与整体相关稳定性能进行分析,研究利用板件的屈曲后强度,以实现更为经济合理的构件截面设计。建立了可以准确模拟不锈钢非线性材料力学性能、截面焊接残余应力和构件的局部与整体几何初始缺陷... 详细信息

采用有限元法对焊接箱形截面不锈钢柱的局部与整体相关稳定性能进行分析,研究利用板件的屈曲后强度,以实现更为经济合理的构件截面设计。建立了可以准确模拟不锈钢非线性材料力学性能、截面焊接残余应力和构件的局部与整体几何初始缺陷等因素的精确有限元数值模型,并依据试验结果对模型的可靠性进行了验证。基于验证可靠的有限元模型,开展了系统参数分析,同时补充了大量的数值计算数据点。根据得到的试验和有限计算结果,对相关稳定承载力的理论计算方法进行了比较分析,表明现有的方法应用较为复杂,而且可能高估构件的相关稳定承载力。针对奥氏体型和双相型两类不锈钢提出了通用的计算修正系数,给出了新的直接强度法计算公式,经试验与有限元计算结果验证,表明其能够准确计算焊接箱形截面不锈钢柱的相关稳定承载力。

关键词：不锈钢柱相关稳定焊接箱形截面有限元法有效宽度法直接强度法

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