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Oxidation of propane over substituted Keggin phosphomolybdate salts

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Journal of Natural Gas Chemistry 2009年第3期18卷 319-324页

作者： t.Mazari C.Roch.marchal S.Hocine N.Salhi C.Rabia Laboratoire de Chimie du Gaz Naturel Faculté de ChimieUniversité des Sciences et de la Technologie Houari Boumediéne ILV-UMR 8180 CNRS-Université de Versailles-St Quentin-en-Yvelines Batiment Lavoisier45 avenue des Etats-Unis78035 Versailles CedexFrance

Ammonium salts, （NH4）6HPMo11MO40 （M = Ni, Co, Fe）, have been investigated for the oxidation of propane, with molecular oxygen, at temperature ranging between 380 ℃ and 420 ℃ after in-situ pre-treatment performed at two heating rate of 5 or 9 ℃/min. they were characterized by BEt method, XRD, 31p NMR, UV-Vis and IR techniques. the catalysts were found active in the propane oxidation and selective to propene or acrolein, in particular for samples pre-treated with the heating rate of 9 ℃/min.

关键词： propane oxidation propene acrolein polyoxometalates phosphomolybdate

Oxidation of propane over ammonium-transition metal mixed keggin phosphomolybdate salts

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Journal of Natural Gas Chemistry 2010年第1期19卷 54-60页

作者： t. Mazari C. Roch. marchal S. Hocine N. Salhi C. Rabia Laboratoire de Chimie du Gaz Naturel Faculte' de Chimie Universite' des Sciences et de la Technologie Houari Boumedie`ne USTHB BP32 El-Alia Bab-Ezzouar Alger Alge'rie ILV-UMR 8180 CNRS Universite' de Versailles -St Quentin-en-Yvelines Ba?timent Lavoisier 45 avenue des Etats-Unis 78035 Versailles Cedex France

Mixed ammonium-transition metal salts with formula of （NH4）xMyHzPMo12O40 （M = Ni^2＋, Co^2＋ or Fe ^3＋） denoted as MPMo12 have been investigated for the oxidation of propane, with molecular oxygen, at temperature range between 380 ℃ and 420 ℃ after in-situ pre-treatment performed at two heating rate of 5 or 9℃/min. they were characterized by BEt method, XRD, UV-Vis and IR techniques. the catalysts were found to be active in the propane oxidation and selective to propene or acrolein, in particular for samples pre-treated with the heating rate of 9℃/min. FePMo12 was found to be a more active catalyst for propene （17.2% yield） with minimal over deep oxidation （0.3% yield in COx）.

关键词： phosphomolybdate ammonium keggin propane oxidation propene acrolein

Quantitative Determination of Density of Ground State Atomic Oxygen from Both tALIF and Emission Spectroscopy in Hot Air Plasma Generated by Microwave Resonant Cavity

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Plasma Science and technology 2016年第3期18卷 259-265页

作者： F.marchal M.YOUSFI N.MERBAHI G.WAttIEAUX A.PIQUEMAL University of toulouse UPSLAPLACE CNRS UMR 5213 CEA DAMDIF

two experimental techniques have been used to quantify the atomic oxygen density in the case of hot air plasma generated by a microwave （MW） resonant cavity. the latter operates at a frequency of 2.45 GHz inside a cell of gas conditioning at a pressure of 600 mbar, an injected air flow of 12 L/min and an input MW power of 1 kW. the first technique is based on the standard two photon absorption laser induced fluorescence （tALIF） using xenon for calibration but applied for the first time in the present post discharge hot air plasma column having a temperature of about 4500 K near the axis of the nozzle. the second diagnostic technique is an actinometry method based on optical emission spectroscopy （OES）. In this case, we compared the spectra intensities of a specific atomic oxygen line （844 nm） and the closest wavelength xenon line （823 nm）. the two lines need to be collected under absolutely the same spectroscopic parameters. the xenon emission is due to the addition of a small proportion of xenon （1% Xe） of this chemically inert gas inside the air while a further small quantity of H2 （2~） is also added in the mixture in order to collect OH（A- X） and NH（A-X） spectra without noise. the latter molecular spectra are required to estimate gas and excitation temperatures. Optical emission spectroscopy measurements, at for instance the position z=12 mm on the axis plasma column that leads to a gas measured temperature equal to 3500 K, an excitation temperature of about 9500 K and an atomic oxygen density 2.09× 1017＋ 0.2×1017 cm-3. this is in very good agreement with the tALIF measurement, which is equal to 2.0×101t cm-3.

关键词： tALIF microwave air plasma atomic oxygen concentration actinometry,optical emission spectroscopy

NtR/NRX Define a New thioredoxin System in the Nucleus of Arabidopsis thaliana Cells

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Molecular Plant 2014年第1期7卷 30-44页

作者： Corinne marchal Valerie Delorme-Hinoux Laetitia Bariat Wafi Siala Christophe Belin Julio Saez-Vasquez Christophe Riondet Jean-Philippe Reichheld Universite Perpignan Via Domitia CNRS Laboratoire Genome et Developpement des Plantes UMR 5096 58 Avenue Paul Alduy-Bat T F-66860 Perpignan France Pharmacologie cellulaire et moleculaire Louvain Drug Research Institute Universite catholique de Louvain Brussels Belgium

thioredoxins （tRX） are key components of cellular redox balance, regulating many target proteins through thiol/disulfide exchange reactions. In higher plants, tRX constitute a complex multigenic family whose members have been found in almost all cellular compartments. Although chloroplastic and cytosolic tRX systems have been largely studied, the presence of a nuclear tRX system has been elusive for a long time. Nucleoredoxins （NRX） are potential nuclear tRX found in most eukaryotic organisms. In contrast to mammals, which harbor a unique NRX, angiosperms gen- erally possess multiple NRX organized in three subfamilies. Here, we show thatArabidopsis thaliana has two NRXgenes （AtNRX1 and AtNRX2）, respectively, belonging to subgroups I and III. While NRX1 harbors typical tRX active sites （WCG/ PPC）, NRX2 has atypical active sites （WCRPC and WCPPF）. Nevertheless, both NRXl and NRX2 have disulfide reduction capacities, although NRX1 alone can be reduced by the thioredoxin reductase NtRA. We also show that both NRX1 and NRX2 have a dual nuclear/cytosolic localization. Interestingly, we found that NtRA, previously identified as a cytosolic protein, is also partially localized in the nucleus, suggesting that a complete tRX system is functional in the nucleus. We show that NRX1 is mainly found as a dimer in vivo. nrxl and nrx2 knockout mutant plants exhibit no phenotypic perturbations under standard growth conditions. However, the nrxl mutant shows a reduced pollen fertility phenotype, suggesting a specific role of NRX1 at the haploid phase.

关键词： thioredoxin nucleoredoxin nucleus Arabidopsis.

EVOLUtION OF tHE MOMENt OF INERtIA IN tHE MANY-BODY PROBLEM

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Science China Mathematics 1985年第6期 638-647页

作者： CHRIStIAN marchal,孙义燧 Office National d'Etudes et de Recherches Aerospatiales (ONERA) Chtillon France Department of Astronomy Nanjing University

For the many-body problem the bifurcation curves between the attainable domain and the forbidden domain in the plane （ρ, t） are obtained where ρ is the "mean quadratic distance"（proportional to the square root of the moment of inertia）and, for example, it is shown that for the negative energy systems ρ cannot be smaller than α for a duration larger than t/2, where α is the generalized semi-major axis, t the corresponding period, i.e. t=2π （α3/μ）1/2, μ gravitational constant.

关键词： body EVOLUtION OF tHE MOMENt OF INERtIA IN tHE MANY-BODY PROBLEM

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波浪作用下海底管线的物理模型实验研究

海洋通报 1996年第5期15卷 68-73页

作者：李玉成陈兵 J.L.J.marchal Ph.D.Rigo 大连理工大学土木系大连116024 the University of Liege

本文进行了海底管线受波浪力作用的两种不同比尺的物理模型实验,得出了水平力系数C_(fx)和垂直力系数C_(fz)随Kc数和Re数的变化曲线,并对比了不同比尺物理模型实验的结果。结果对比表明,比尺对波浪力的影响(即粘性影响)是不可忽略的。

关键词：海底管线物理模型实验波浪作用管道设计

therapeutic Administration of <i>Mycobacterium bovis</i>BCG Killed by Extended Freeze-Drying Modulates Airway Inflammation in a Chronic Murine Model of Asthma

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Open Journal of Respiratory Diseases 2013年第2期3卷 79-88页

作者： Micheline Lagranderie Jeroen Alfons Juliette Vanoirbeek Bernardo Boris Vargaftig Pierre-Marie Guyonvarc’h Gilles marchal Xavier Roux Immunotherapix BioTop Institut Pasteur Paris France Laboratoire Immunotherapie Institut Pasteur Paris France Research Unit of Lung toxicology Katholieke Universiteit Leuven Leuven Belgium Unité de Pharmacologie Cellulaire Institut Pasteur Paris France

Background: We previously showed that treatment with Mycobacterium bovis BCG killed by extended freeze-drying (EFD BCG) modulates inflammation through regulatory t cells (tregs) in an acute asthma model. In this study, we investigated the kinetics of treg induction as well as their long-term homing in spleen and lungs correlating with reduced airway hyperresponsiveness (AHR) in a murine model of acute allergic asthma. We then evaluated the therapeutic implication of EFD BCG in a chronic asthma model. Methods: tregs expressing Foxp3 were analyzed in various organs shortly and long-term after EFD BCG, live- and Heat Killed-(HK-) BCG treatments in an acute model of asthma. We further studied EFD BCG treatment on airway inflammation using a chronic model of asthma in mice. Results: Foxp3 expression peaked in the inguinal draining lymph-nodes (iDLNs) 2-4 days after EFD BCG treatment whereas it was long-term observed in spleen (days 7 to 90). this increase in Foxp3 expression was also found in lungs upon intranasal ovalbumin (OVA) challenge in OVA-sensitized mice. the loss of protection 4 months after EFD BCG treatment was correlated with the end of this phenomenon. Moreover, major lung inflammation hallmarks of severe asthma after multiple allergen challenges promoting chronic airway inflammation in OVA sensitized mice were reduced by EFD BCG treatment: AHR, eosinophils and neutrophils in bronchoalveolar lavage (BAL), mucus metaplasia, th2 as well as th17 cytokine levels in BAL and sera. EFD BCG treatment also enhances PPAR-γ expression and regulates NF-κBp65 translocation in lung extracts in this model of chronic asthma. Conclusions: EFD BCG treatment induced long-term protective effect associated to Foxp3 tregs in the spleen and lungs in an acute model of asthma and inhibits AHR in a chronic model of asthma. EFD BCG could be a new and promising immuno-modulatory alternative treatment to corticoids in severe human asthma.

关键词： Asthma Foxp3 Killed BCG Modulation Regulatory t Cells

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多体问题中惯量矩的演变

中国科学:数学 1985年第6期 557-565页

作者： C.marchal 孙义燧南京大学天文系法国太空研究总署

本文得到了多体问题中在（p,t）平面上允许区域与禁区之间的分歧曲线,其中p为“平方平均距离”（正比于惯量矩的平方根）。这说明了,例如对负能量系统在大于t/2的时间间隔内ρ不能保持小于α,其中α为广义半长轴,t为对应的周期,即t=2π... 详细信息

本文得到了多体问题中在（p,t）平面上允许区域与禁区之间的分歧曲线,其中p为“平方平均距离”（正比于惯量矩的平方根）。这说明了,例如对负能量系统在大于t/2的时间间隔内ρ不能保持小于α,其中α为广义半长轴,t为对应的周期,即t=2π（a/μ）,μ为引力常数。

关键词：二体问题多体问题平均距离 N-体问题半通径极限曲线轨道周期惯量矩半长径引力常量引力常数分歧曲线真近点角二次方根平方根偏近点角

治疗完全性直肠脱垂的Delorme手术和Orr-Loygue直肠固定术的长期效果

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世界核心医学期刊文摘（胃肠病学分册） 2006年第1期2卷 21-22页

作者： marchal F. Bresler L. Ayav A. 尹勇 Department of Surgery Centre Alexis Vautrin Av. de Bourgogne 54511 Vandoeuvrelè s- NancyFrance Dr.

PURPOSE: the aim of this study was to assess long- term outcome of Orr- Loygue rectopexy and Delorme’ s procedures in total rectal prolapse management. MEtHODS: Data were collected retrospectively from 1978 to 2001. Statistical analysis was performed by chi- squared test and Student’ s t - test. RESULtS: One hundred nine patients underwent either a Orr- Loygue rectopexy (49 patients) or a Delorme’ s procedure (60 patients). Mean follow- up was 88 (range, 1- 300) months. In the rectopexy group, the overall complication rate and the recurrence rate were 33 percent and 4 percent, respectively. In patients with preoperative constipation, this symptom was improved or completely resolved in 33 percent and worsened in 58 percent postoperatively. Seventy- three percent of patients with preoperative incontinence were continent or had continence improvement postoperatively. In Delorme’ s group, overall complication and recurrence rates were 15 percent and 23 percent, respectively. Mortality was 7 percent. In patients with preoperative constipation, this symtom was improved or completely resolved in 54 percent and worsened in 12.5 percent of patients postoperatively. Forty- two percent of patients with preoperative incontinence were continent or had continence improvement postoperatively. CONCLUSIONS: In this study, Orr- Loygue rectopexy had a lower long- term recurrence rate. However, this surgical procedure is associated with a higher complication rate. We believe that Delorme’ s procedure is still a valuable option in selected patients with postoperative minimal morbidity but higher recurrence rate.

关键词：直肠固定术完全性直肠脱垂 Delorme Orr-Loygue 长期效果肛门直肠大便失禁复发