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411篇 您的检索式:作者名="Vannier"
    题名 作者 年代 出处 被引量
1纳米氧化铋基材料高温相变的研究显示文摘以分析纯Bi(NO_3)_3·5H_2O和Y(NO_3)·6H_2O为原料制备纳米β-Bi_2O_3和Bi_2O_3-Y_2O_3(75% (摩尔分数)Bi_2O_3+25%(摩尔分数)Y_2O_3)粉体,平均粒度分别为40和30nm。经TG-DTA、高温XRD以及高温拉曼的研究结果表明。亚稳态的纳米β-Bi_2O_3粉体在升温过程中于420℃先向低温稳定的α-Bi_2O_3转变,在720℃时向δ-Bi_2O_3相转变,降温过程则是由δ→p→α。由于纳米Bi_2O_3具有很高的活性,使得相变温度比微米Bi_2O_3有所降低。蚋米Bi_2O_3-Y_2O_3复合粉体升温过程中。Y_2O_3的固溶反应在较低温度(400℃)开始,500℃时β-Bi_2O_3完全转变为δ相,同时Y_2O_3完全固溶到δ-Bi_2O_3晶体中。Y_2O_3的掺杂使得Bi_2O_3的β→δ相转变温度大幅降低。李榕 甄强 郭曙强 石刚 Rose-Noelle VANNIER Michel DRACHE 2006功能材料2006,37,11:7
2Nickel ferrite spinel as catalyst precursor in the dry reforming of methane:Synthesis,characterization and catalytic properties显示文摘Dry reforming of methane by CO2 using nickel ferrite as precursor of catalysts was investigated.Nickel ferrite crystalline particles were prepared by coprecipitation of nitrates with NaOH or ammonia followed by calcination,or by hydrothermal synthesis without calcination step.The textural and structural properties were determined by a number of analysis methods,including X-ray diffraction (XRD),Raman spectroscopy and X-ray photoelectron spectroscopy (XPS),among which X-ray diffraction (XRD) was at room and variable temperatures.All synthesized oxides showed the presence of micro or nanoparticles of NiFe2O4 inverse spinel,but Fe2O3 (hematite) was also present when ammonia was used for coprecipitation.The reducibility by hydrogen was studied by temperature-programmed reduction (TPR) and in situ XRD,which showed the influence of the preparation method.The surface area (BET),particle size (Rietveld refinement),as well as surface Ni/Fe atomic ratio (XPS) and the behavior upon reduction varied according to the synthesis method.The catalytic reactivity was investigated using isopropanol decomposition to determine the acid/base properties.The catalytic performance of methane reforming with CO2 was measured with and without the pre-treatment of catalysts under H2 in 650-800 C range.The catalytic conversions of methane and CO2 were quite low but they increased when the catalysts were pre-reduced.A significant contribution of reverse water gas shift reaction accounted for the low values of H2 /CO ratio.No coking was observed as shown by the reoxidation step performed after the catalytic reactions.The possible formation of nickel-iron alloy observed during the study of reducibility by hydrogen was invoked to account for the catalytic behavior.Rafik Benrabaa Hamza Boukhlouf Axel Lfberg Annick Rubbens Rose-Nelle Vannier Elisabeth Bordes-Richard Akila Barama 2012Journal of Natural Gas Chemistry2012,21,5:5
3Improving of photocatalytic activity of barium ferrate via bismuth and copper co-doping for degradation of paracetamol under visible light irradiation显示文摘Nanosized Ba_(1-x)Bi_(x)Fe_(1-x)Cu_(x)O_(3)(12–50 nm)with x values of 0,0.01,0.05,and 0.1 system was prepared using the Pechini method.Structural,morphological,surface and optical characterizations were performed for the prepared samples.Cubic phase was the predominant phase for the undoped BaFeO_(3)and Bi and Cu co-doped BaFeO_(3)samples.Minor phases of monoclinic Ba_(2)Fe_(2)O_(5),orthorhombic BaFe_(2)O_(4)and orthorhombic BaCO_(3)were identified for all the prepared samples.Ba_(0.95)Bi_(0.05)Fe_(0.95)Cu_(0.05)O_(3)sample has the lowest band gap(2.43 e V).98.1%paracetamol removal was achieved with 0.75 g/L of Ba_(0.95)Bi_(0.05)Fe_(0.95)Cu_(0.05)O_(3)at pH9 after 120 min.The paracetamol degradation follows the pseudo first-order kinetics.HO·is the main oxidative species responsible for the paracetamol degradation.Gas chromatography–mass spectrometry(GC–MS)analysis was performed at the end of the photocatalytic degradation experiment under optimum operating condition using Ba_(0.95)Bi_(0.05)Fe_(0.95)Cu_(0.05)O_(3)to explain the reaction mechanism and identify the intermediate by-products which is confirmed by ultraviolet/visible(UV/Vis)spectroscopy study at different reaction times.Hussien Ahmed Abbas Rabab Ahmed Nasr Rose-Noelle Vannier Tarek Samir Jamil 2022Journal of Environmental Sciences2022,34,2:2
4Discussion on the systematic position of the Early Cambrian priapulomorph worms显示文摘HUANG Diying CHEN Junyuan J. VANNIER 2006Chinese Science Bulletin2006,51,2:2
5无团聚ZrO_2-HfO_2-Y_2O_3复合纳米粉体的制备显示文摘以分析纯ZrOCl2.8H2O、HfOCl2.8H2O和Y(NO3)3.6H2O为原料,采用反向滴定共沉淀-共沸蒸馏法成功地制备出无团聚的ZrO2-HfO2-Y2O3复合纳米粉体。借助XRD、TEM、BET等手段分析了制备工艺对粉体粒径和团聚状态的影响。研究表明,分散剂PEG的加入量及前驱体湿凝胶的处理方式对最终制备的ZrO2-HfO2-Y2O3复合粉体的晶粒度影响不大,但显著影响粉体的分散状态。分散剂加入量为1%(质量分数)并对湿凝胶共沸蒸馏处理条件下最终获得的粉体的分散性最好。前驱体沉淀经500℃焙烧1h后,生成了具有高氧离子电导率的立方晶型ZrO2基ZrO2-HfO2-Y2O3固溶体,粉体的平均粒径约为15nm。石刚 甄强 李榕 陈瑞芳 严凯 Rose-Noelle VANNIER 2006功能材料2006,37,7:2
6Diagnositic performance of CT MPR and 3DCT imaging in maxillofacial trama显示文摘Fox LA Vannier MW West OC 1995Comput Med Imaging Graph1995,19,5:2
7Stair-step artifacts in three-dimensional helical CT:an experirnental study显示文摘Wang G Vannier MW 1994Radiology1994,191,:1
8Regulation of fibrinogen biosynthesis by cytokines, conse- quences on the vascular risk 显示文摘VASSE M PAYSANT J SORIA J COLLET JP VANNIER JP SO- RIA C 1996Haemostasis1996,26,:1
9Three - dimensional imaging surgical planning, and image- guided therapy显示文摘Vannier MW Mash JL 1996Radiol Clin North Am1996,34,3:1
10Complex musculoskeletal anatomy: analysis using three dimenional Sueface reconstruction显示文摘Totty WG Vannier MW 1984Radiology1984,150,:1
11Craniofacial computer- assisted surgical planning and simulation 显示文摘Lo LJ Marsh JL Vannier MW 1994Clin Plast Surg1994,21,4:1
12Imbalance between interleukin-1 agonists and antagonists: relation- ship to severity of inflammatory bowel disease 显示文摘Ludwicczek O Vannier E Borggraefe I 2004Clin Exp Immunol2004,138,2:1
13Craniofacial computer - as-sisted surgeical planning and simulation 显示文摘Lo LJ Marsh JL Vannier MW 1994Clin Plast Surg1994,21,:1
14Longitudinal resolution in volumetric X-ray computerized tomography-Analytical comparison between conventional and helical computerized tomography 显示文摘Wang G Vannier M W 1994Medical Physics1994,21,3:1
15Spiral (Helical) CT 显示文摘J P Heiken J A Brink M W Vannier 1993Radiology (S0033-8419)1993,189,3:1
16The use of POSS as synergist in intumescent recycled poly (ethylene terephthalate) 显示文摘VANNIER S DUQUESNE S BOUR- BIGOT A 2008Polymer Degradation and Stability2008,93,:1
17Experimental infection of fattening pigs with pseudorabies (Aujeszky's disease) virus: efficacy of attenuated live-and inactivated-virus vaccines in pigs with or without passive immunity显示文摘Vannier P 1985Am J Vet Res1985,46,7:1
18Climate versus human-driven fire regimes in Mediterranean landscapes:The Holocene record of Lagodell’Accesa(Tuscany,Italy)显示文摘VANNIERE B COLOMBAROLI D Ch APRON E 2008Quaternary Science Reviews2008,27,:1
19Diagnostic performance of CT,MRI and 3D CT imaging in maxillofacial trauma显示文摘FOX LA VANNIER MN WEST OC 1995Comput Med Imaging Graph1995,19,2:1
20An iterative algorithm for X-ray CT fluoroscopy 显示文摘Wang G Schweiger G Vannier M W 1998IEEE Transactions on Medical Imaging1998,17,5:1
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