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Approaches for representing hydro-mechanical coupling between sub-surface excavations and argillaceous porous media at the ventilation experiment, Mont Terri

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Journal of Rock Mechanics and Geotechnical Engineering 2013年第2期5卷 85-96页

作者： Alexander Bond Alain Millard Shigeo Nakama Chengyuan Zhang benoit Garritte Quintessa Ltd. Chadwick House Birchwood Park Warrington Cheshire A3 6AEUK Commissariatà l'Energie Atomique YvetteFrance Japan Atomic Energy Agency (JAEA) Tokai Japan Institute of Rock and Soil Mechanics Chinese Academy of Sciences Universidad Politcnica de Catalunya Barcelona Spain

At the Mont Terri Underground Research Laboratory （Switzerland）, a field-scale investigation has been conducted in order to investigate the hydro-mechanical and chemical perturbations induced in the argilla- ceous formation by forced ventilation through a tunnel. This experiment has been selected to be used for processing model development and validation in the international project DECOVALEX-2011. The con- ceptual and mathematical representation of the engineered void, which itself forms a major part of the experiment and is not simply a boundary condition, is the subject of this paper. A variety of approaches have been examined by the contributors to DECOVALEX and a summary of their findings is presented here. Two major aspects are discussed. Firstly, the approaches for the treatment of the surface condition at the porous media/tunnel interface are examined, with two equivalent but differing formulations successfully demonstrated. Secondly, approaches for representing the tunnel with associated air and water vapour movement, when coupled with the hydro-mechanical （HM） representation of the porous medium, are also examined. It is clearly demonstrated that, for the experimental conditions of the ventilation experiment （VE） that abstracted physical and empirical models of the tunnel, can be used successfully to represent the hydraulic behaviour of the tunnel and the hydraulic interaction between the tunnel and the surrounding rock mass.

关键词： Tunnel Water vapour Hydro-mechanical (HM) coupling Numerical modelling Mont Terri Underground Research Laboratory (URL) Ventilation experiment (VE) Argillite

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Synthesis of Single-Walled Carbon Nanotubes by Induction Thermal Plasma

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Nano Research 2009年第10期2卷 800-817页

作者： Keun Su Kim Ala Moradian Javad Mostaghimi Yasaman Alinejad Ali Shahverdi benoit Simard Gervais Soucy Department of Chemical Engineering Universitéde SherbrookeJ1K 2R1Canada Department of Mechanical and Industrial Engineering University of TorontoM5S 3G8Canada Steacie Institute for Molecular Sciences National Research CouncilK1A 0R6Canada

The production of high quality single-walled carbon nanotubes(SWCNTs)on a bulk scale has been an issue of considerable ***,it has been demonstrated that high quality SWCNTs can be continuously synthesized on large scale by using induction thermal plasma *** this process,the high energy density of the thermal plasma is employed to generate dense vapor-phase precursors for the synthesis of *** the current reactor system,a carbon soot product which contains approximately 40 wt%of SWCNTs can be continuously synthesized at the high production rate of~100 g/*** this article,our recent research efforts to achieve major advances in this technology are ***,the processing parameters involved are examined systematically in order to evaluate their individual inuences on the SWCNT synthesis.Based on these results,the appropriate operating conditions of the induction thermal plasma process for an effective synthesis of SWCNTs are discussed.A characterization study has also been performed on the SWCNTs produced under the optimum processing ***,a mathematical model of the process currently under development is *** model will help us to better understand the synthesis of SWCNTs in the induction plasma process.

关键词： Single-walled carbon nanotubes(SWCNTs) large-scale continuous synthesis radio frequency(RF)induction thermal plasma optimization numerical modeling

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Selection of Cowpea [(Vigna unguiculata (L.) WALP] Genotypes for Drought Tolerance Using Selection Indices

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Agricultural Sciences 2023年第3期14卷 384-397页

作者： Sekou Armand Sanogo Sory Diallo Daniel Nyadanu Téyioué benoit Joseph Batieno Nerbéwendé Sawadogo Department of Horticulture Faculty of Agriculture Kwame Nkrumah University of Science and Technology (KNUST) Kumasi Ghana Institut D’Economie Rurale (IER) Bamako Mali Institut de l’Environnement et de la Recherche Agricole (INERA Kamboinsé/CNRST) Ouagadougou Burkina Faso Equipe Génétique et Amélioration des Plantes Laboratoire Biosciences Ecole Doctorale Sciences et Technologies Université Joseph KI-ZERBO Ouagadougou Burkina Faso

Cowpea [(Vigna unguiculata (L.)] is one of the most important arid legumes cultivated for pulse and forage production. However, in cowpea, not much is known about the base index selection method in breeding for drought tolerance. Consequently, the present study has been conducted to: 1) evaluate the yield performance of cowpea genotypes under artificial drought and well-watered condition;2) develop a base index using multiple traits for ranking genotype performance. The experiment was a 25 × 2 factorial laid out in a Randomized Complete Block Design (RCBD) with three replications. The experiment was carried out in the screen house at the Department of Horticulture at KNUST. The result showed that KPR1-96-73, Simbo, CZ06-4-16, Wilibaly and Agyenkwa were high yielding in well-water condition while Ghana Shoba, Sangaraka, NKetewade, Ghana-Shoni and Korobalen were high yielding genotypes in water stress condition. The average yield reduction was 60.6% for grain respectively. The biplot displays revealed four groups among the genotypes tested which was based on their yielding capacity and drought tolerance. In cluster B high yielding and drought tolerant genotypes were identified, high yielding and drought susceptible have been identified in cluster A, low yielding and drought tolerant in cluster D, and lastly low yielding and drought susceptible in cluster C. Genotypes in cluster B, were the best due to the fact that it combines high yield and tolerance to drought. They were Ghana Shoni, Nketewade, Sangaraka and Ghana shoba. These genotypes might be suitably employed in further drought tolerance breeding program of cowpea.

关键词： Cowpea [(Vigna unguiculata (L.)] Post Flowering Drought Drought Tolerance Index

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Evaluating the environmental impact of selected chemical de-icers

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Transportation Safety and Environment 2019年第3期1卷 220-229页

作者： Xiang Li benoit Van Aken Erica Mckenzie Huichun Zhang Bechara Abboud William Davenport Civil&Environmental Engineering Department Temple UniversityPhiladelphiaPAUSA Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijingChina Department of Civil Engineering Case Western Reserve UniversityClevelandOHUSA Department of Transportation PhiladelphiaPAUSA

In this study,the environmental impacts of six commercial chloride-based de-icer products,including Rock Salt and Salt Brine,were *** nutrients,oxygen demand,heavy metal concentration,corrosion and toxicity of all six de-icers were *** an assumed 500-fold dilution,the test results were compared to the public water-quality *** results show that the selected chemical de-icers have little chance of severely damaging the environment and ecosystem under a normal dilution ***,attention needs to be paid to small water bodies and sensitive receiving water.

关键词： chemical de-icer environmental impact corrosion test toxicity

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Emotions and performance in rugby

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Journal of Sport and Health Science 2019年第6期8卷 595-600页

作者： Mickael Campo Stéphane Champely Andrew MLane Elisabeth Rosnet Claude Ferrand benoit Louvet SPMS(EA 4180) UBFCDijon 21078France Laboratory for Vulnerabilities and Innovation in Sport(L-VIS EA 7428)University of Lyon 1Villeurbanne 69622France Institute of Sport Faculty of EducationHealth and Well-beingUniversity of WolverhamptonWs13BDUK Faculty of Sport Sciences Universitéde Reims Champagne-ArdenneReims 51096France Research Team of Psychology of Ages of Life(EA 2114) University Francois RabelaisTours 37041France CETAPS(EA 3832) Normandie UniversitéMont Saint Aignan 76821France

Purpose:This study investigated emotion-performance relationships in rugby *** identified which emotions rugby players experienced and the extent to which these emotions were associated with performance,considering how emotions unfold over the course of a game,and whether the game was played at home or ***:Data were gathered from 22 professional male rugby union players using auto-confrontation interviews to help identify situations within games when players experienced intense *** assessed the intensity of emotions experienced before each discrete performance and therefore could assess the emotion-performance relationship within a ***:Players identified experiencing intense emotions at 189 *** in rugby union rated the quality of each performance at these 189 time-points on a visual analog scale.A Linear Mixed Effects model to investigate emotion-performance relationships found additive effects of game location,game time,and emotions on individual ***:Results showed 7 different pre-performance emotions,with high anxiety and anger associating with poor *** research should continue to investigate emotion-performance relationships during performance using video-assisted recall and use a measure of performance that has face validity for players and coaches alike.

关键词： Emotion Game location Game time Linear Mixed Effects model Multilevel analysis Performance assessment Team sport

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All-optical tuning of a diamond micro-disk resonator on silicon

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Photonics Research 2020年第3期8卷 318-324页

作者： PAUL HILL CHARALAMBOS KLITIS benoit GUILHABERT MARC SOREL ERDAN GU MARTIN D.DAWSON MICHAEL J.STRAIN Institute of Photonics Department of PhysicsTechnology and Innovation CentreUniversity of StrathclydeGlasgow G11RDUK Diamond Science and Technology Centre for Doctoral TrainingUniversity of WarwickCoventry CV47ALUK School of Engineering University of GlasgowGlasgow G128LTUK

High-quality integrated diamond photonic devices have previously been demonstrated in applications from nonlinear photonics to on-chip quantum ***,the small sample sizes of single crystal material available,and the difficulty in tuning its optical properties,are barriers to the scaling of these *** of these issues can be addressed by integrating micrometer-scale diamond devices onto host photonic integrated circuits using a highly accurate micro-assembly *** this work a diamond micro-disk resonator is integrated with a standard single-mode silicon-on-insulator waveguide,exhibiting an average loaded Q-factor of 3.1×10^4 across a range of spatial modes,with a maximum loaded Q-factor of 1.05×10^*** micrometer-scale device size and high thermal impedance of the silica interface layer allow for significant thermal loading and continuous resonant wavelength tuning across a 450 pm range using a milliwatt-level optical *** diamond-on-demand integration technique paves the way for tunable devices coupled across large-scale photonic circuits.

关键词： tuning resonator waveguide

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Reactive uptake of NO2 on volcanic particles: A possible source of HONO in the atmosphere

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Journal of Environmental Sciences 2020年第9期32卷 155-164页

作者： Manolis N.Romanias Yangang Ren benoit Grosselin Véronique Daële Abdelwahid Mellouki Pavla Dagsson-Waldhauserova Frederic Thevenet IMT Lille Douai Univ.LilleSAGEF-59000 LilleFrance CNRS-ICARE/OSUC 45071 OrléansFrance Agricultural University of Iceland KeldnaholtReykjavik 112Iceland Faculty of Environmental Sciences Czech University of Life SciencesPrague 16521Czech Republic

The heterogeneous degradation of nitrogen dioxide(NO2) on five samples of natural Icelandic volcanic particles has been *** experiments were carried out under simulated atmospheric conditions using a coated wall flow tube(CWFT).The CWFT reactor was coupled to a blue light nitrogen oxides analyzer(NOx analyzer),and a long path absorption photometer(LOPAP) to monitor in real time the concentrations of NO2,NO and HONO,*** dark and ambient relative humidity conditions,the steady state uptake coefficients of NO2 varied significantly between the volcanic samples probably due to differences in magma composition and morphological variation related with the density of surface OH *** irradiation of the surface with simulated sunlight enhanced the uptake coefficients by a factor of three indicating that photo-induced processes on the surface of the dust ***,the product yields of NO and HONO were determined under both dark and simulated sunlight *** relative humidity was found to influence the distribution of gaseous products,promoting the formation of gaseous HONO.A detailed reaction mechanism is proposed that supports our experimental *** the atmospheric implications,our results suggest that the NO2 degradation on volcanic particles and the corresponding formation of HONO is expected to be significant during volcanic dust storms or after a volcanic eruption.

关键词： humidity gaseous source

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Pancytopenia and Pulmonary Tuberculosis: A Case Report

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Journal of Tuberculosis Research 2023年第2期11卷 62-66页

作者： Innocent Murhula Kashongwe Okamba Penge benoit Kabengele Obel Serge Bisuta Fueza Zacharie Kashongwe Munogolo Pulmonology Unit Internal Medicine Kinshasa University Hospital Kinshasa Democratic Republic of the Congo

Background: Hematopoietic system is seriously affected by tuberculosis. It exerts a dazzling variety of hematological effects involving both cell lines and plasma components [1]. Anemia and leukopenia are not unusual with tuberculosis (TB), but pancytopenia is rare [2]. Findings: In this report, we described a case of a 42 years man presenting bleeding and pancytopenia;bacteriological pulmonary TB was established by genotypic rapid test and treatment following the WHO guidelines on drug-sensitive TB treatment. Patient recovered entirely with the WHO recommended regimen associated with general and local treatment of the bleeding. Conclusion: This case report emphasizes the importance of always suspecting tuberculosis in a tuberculosis-endemic area, even when the clinical manifestations are atypical, like pancytopenia and also of properly investigating the differential diagnosis. Even though prognosis seems to be less good, actual treatment regimen is still effective.

关键词： Pancytopenia Pulmonary Tuberculosis Treatment Case Report

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Dissipation of S-metolachlor and butachlor in agricultural soils and responses of bacterial communities:Insights from compound-specific isotope and biomolecular analyses

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Journal of Environmental Sciences 2020年第6期32卷 163-175页

作者： Ehssan Torabi Charline Wiegert benoit Guyot Stéphane Vuilleumier Gwenael Imfeld Department of Plant Protection Faculty of Agricultural Science and EngineeringCollege of Agriculture and Natural ResourcesUniversity of TehranDaneshkadeh St.P.O.Box#***-4111KarajIran Laboratory of Hydrology and Geochemistry of Strasbourg(LHyGeS) Universitéde StrasbourgUMR 7517 CNRS/EOST1 Rue Blessig67084Strasbourg CedexFrance Génétique Moléculaire GénomiqueMicrobiologie(GMGM)Universitéde StrasbourgUMR 7156 CNRS4 Allee Konrad Roentgen67000StrasbourgFrance

The soil dissipation of the widely used herbicides S-metolachlor(SM)and butachlor(BUT)was evaluated in laboratory microcosms at two environmentally relevant doses(15 and 150μg/g)and for two agricultural soils(crop and paddy).Over 80%of SM and BUT were dissipated within 60 and 30 days,respectively,except in experiments with crop soil at 150μg/*** on compound-specific isotope analysis(CSIA)and observed dissipation,biodegradation was the main process responsible for the observed decrease of SM and BUT in the paddy *** SM,biodegradation dominated over other dissipation processes,with changes of carbon isotope ratios(Δδ13C)of up to 6.5‰after 60 days,and concomitant production of ethane sulfonic acid(ESA)and oxanilic acid(OXA)transformation *** crop soil experiments,biodegradation of SM occurred to a lesser extent than in paddy soil,and sorption was the main driver of apparent BUT *** of the 16 S rRNA gene showed that soil type and duration of herbicide exposure were the main determinants of bacterial community *** contrast,herbicide identity and spiking dose had no significant *** paddy soil experiments,a high(4:1,V/V)ESA to OXA ratio for SM was observed,and phylotypes assigned to anaerobic Clostridiales and sulfur reducers such as Desulfuromonadales and Syntrophobacterales were dominant for both *** soil microcosms,in contrast,were associated with a reverse,low(1:3,V/V)ratio of ESA to OXA for SM,and Alphaproteobacteria,Actinobacteria,and Bacillales dominated regardless of the *** results emphasize the variability in the extent and modes of SM and BUT dissipation in agricultural soils,and in associated changes in bacterial communities.

关键词： Chloroacetanilide herbicides Carbon isotope fractionation Pesticide degradation Bacterial diversity

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Ecosystem management in paludified boreal forests:enhancing wood production,biodiversity,and carbon sequestration at the landscape level

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Forest Ecosystems 2018年第4期5卷 376-389页

作者： benoit Lafleur Nicole J.Fenton Martin Simard Alain Leduc David Paré Osvaldo Valeria Yves Bergeron NSERC-UQAT-UQAM Industrial Chair in Sustainable Forest Management and Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue445boul.de I'UniversiteRouyn-NorandaQC J9X 5E4Canada Department of Geography Laval UniversityQuebecQC GIV 0A6Canada Centre d'etude de la foret Universite du Quebec a Montreal141 Avenue du President-KennedyMontrealQC H2X IY4Canada Ressources Naturelles Canada Service canadien des forets Centre de foresterie des Laurentides1055du P.E P S.P.O.13ox 3800QuebecQC GIV 4C7Canada

Canada’s boreal forest represents an important contributor of the world’s wood supply industry. However,maintaining or increasing productivity of the boreal forest may be challenging in areas dominated by forested peatlands. Moreover, sustainable management of these forests must also consider other important aspects of the forest ecosystem such as biodiversity and carbon sequestration. To address these concerns, ecosystem-based management has been implemented in some Canadian jurisdictions, such as in regions where a large portion of the boreal forest is dominated by forested peatlands. The objectives of this paper are(1) to summarize our current understanding of how natural disturbances influence stand dynamics and biodiversity in forested peatlands, and(2) to review the main differences between natural and managed forest stands with respect to soil properties, stand productivity, understory plant communities. We also discuss how even-age management regime succeeds or fails to preserve old forests and how this loss affects both forest structure and habitat diversity at the landscape *** conclude by showing how, in boreal forested peatlands, forest management could contribute to carbon sequestration and mitigate projected climate change.

关键词： Clearcutting Fire Forest dynamics Partial cutting Soil properties Stand productivity Understory plant

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