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121篇 您的检索式:作者名="SAVADOGO"
    题名 作者 年代 出处 被引量
1老挝过度采伐热带混合落叶林区的人工补植(英文)显示文摘人工补植通常用于增加低商业价值树种盛行的次生林中期望树种的密度。本研究评估了均格种植法(vis-à-vis gap)和行植法(line planting)2种人工补植方法,以及老挝过度采伐的热带混合落叶林中的青皮木(Vatica cinerea) 和龙脑香木(Dipterocarpus alatus)和3种豆科植物(缅茄 Afzeliax ylocarpa,大果紫檀Pterocarpus macrocarpus,酸枝木Dalbergia cochinchinensis)的表现。人工补植实验安捧在了一个随机完整的大块场地,做了7个重复。栽植7年后测定了存活率、高度和直径生长,并进行方差分析。用2种人工补植方法栽植的幼苗的存活率没有发生变化(p>0.05)。然而,就直径和高度生长而言,均格种植法要比行植法效果更好。这与林冠在格间和行间块速封闭有关,这种情况在行间更加明显。在存活率,高度和直径生长方面,存在着明显的种间变异。耐阴的龙脑香科树种存活率和生长表现优于喜光树种(p<0.0001)。个体的大小分布不规则,说明林下光照条件不均衡。考虑到行植法很难维持恒定线条宽度和均匀光线条件,及其每年用于清理的成本和僵硬的几何模式,我们推荐采用均格种植法。龙脑香木(Diperocarpus alatus)和青皮木(V.cinerea)可用于混合阔叶林人工补植的树种。缅茄、酸枝木和大果紫檀可作为人工林的混合树种,在较宽林隙地、直线区域和开放地种植或在火耕林幼林冠下种植。Sovu Mulualem Tigabu Patrice Savadogo Per Christer Odén Lamphoune Xayvongsa 2010Journal of Forestry Research2010,21,3:3
2直接涂膜技术用于质子交换膜燃料电池膜电极制备 (Ⅱ)显示文摘研究了直接涂膜过程中 ,催化剂液组成对电池性能的影响 .异丙醇在催化剂墨水中起到溶剂和造孔剂的作用 ,当催化剂墨水中催化剂、异丙醇的质量比为 1∶10时电池性能最好 .Nafion是催化剂层中良好的黏结剂和质子传导载体 .由于直接涂膜 ,使Nafion液与Nafion膜直接接触 ,从而增加了质子传导性 .实验结果表明 ,最佳的Nafion含量 (干基 )为NFP =33% .通过对不同金属含量的Pt/C催化剂的研究发现 ,金属含量不同 ,异丙醇和Nafion的最优含量亦随之改变 .考察了催化剂层不同制备工艺对电池性能的影响 ,表明催化剂层数越多电池性能越好 。蒋淇忠 Oumarou Savadogo 马紫峰 2004化工学报2004,55,8:3
3Improvement of electrochemical and electrical properties of LiFePO_4 coated with citric acid显示文摘LiFePO_4 was synthesized using hydrothermal method and coated with different amounts of citric acid as carbon source.The samples were characterized by X-ray powder diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscope(TEM),surface area measurement—Brunauer–Emmett–Teller(BET),discharge capability,cyclic voltammetry(CV),and electrochemical impedance spectroscopy(EIS).The results show that the quality and thickness of the carbon coating on the surface of LiFePO_4 particles are very important.The optimum carbon content(about 30 wt%)can lead to a more uniform carbon distribution.Electrochemical results show that the samples containing 20 wt%,30 wt%,40 wt%,and50 wt% carbon deliver a discharge capacity of 105,167,151,and 112 mAhg^(-1),respectively,at the rate of 0.1C.The increase of carbon content leads to the decrease of discharge capacity of LiFePO_4/C,owing to the fact that excess carbon delays the diffusion of Li^+ through the carbon layers during charge/discharge procedure.The LiFePO_4/C with low carbon content exhibits poor electrochemical performance because of its low electrical conductivity.Therefore,the amount of carbon must be optimized in order to achieve excellent electrochemical performance of LiFePO_4/C for its application in a lithium ion battery.Majid Talebi-Esfandarani Oumarou Savadogo 2016Rare Metals2016,35,4:2
4西非Sudanian稀树草原森林在旱季火烧温度、持续时间及对种子萌发的影响(英文)显示文摘在西非Sudanian稀树草原森林,计划火烧是一种森林管理措施。开展试验评价火烧季节和不同垂直探测点对最大火温度以及60℃以上火温持续时间的影响,这样的温度对植物组织来说是致命的。设定的火烧季节包括:季初火烧-旱季初期(12月初)、季中火烧-旱季最干旱的时候(1月中旬)、季末火烧-旱季末期(3月末)。调查了不同季节火烧对3种具有社会-经济价值的树种过火后种子萌发的影响。结果表明,最大燃烧温度和火烧持续时间在旱季不同的时期火烧和垂直探测位置均存在显著差异(p<0.001)。火烧初期地面20cm的火温最高、持续时间最长,火烧中期和末期地表温度最高、持续时间最长。这种差异影响不同土壤深度的种子的萌发过程。讨论了当前林业管理措施中的一些心得。Sidzabda Djibril Dayamba Patrice Savadogo Didier Zida Louis Sawadogo Daniel Tiveau Per Christer Oden 2010Journal of Forestry Research2010,21,4:2
5Methanol-tolerant oxygen reduction electroeatalysts based on Pd-3D transition metal alloys for direct methanol fuel ceils 显示文摘Lee K Savadogo O Ishihara A 2006J Electrochem Soc2006,153,:1
6Chemically and Electrochemically Deposited Thin Films for Energy Materials显示文摘Savadogo O 1998Solar Energy Materials and Solar Cells1998,52,:1
7Development of new mcmbranes of electrochemical syst enls显示文摘Savadogo O 1997Electrolysis Chemical Industry1997,11,:1
8A material selection model based on the concept of multiple attribute decision making显示文摘SHANIAN A SAVADOGO O 2006Materials & Design2006,27,4:1
9Effect of surface treatment of NiTi alloy on its corrosion behavior in Hank's solution显示文摘Cisse O Savadogo O Wu M 2002J Biomed Mater Res2002,61,3:1
10Effect of surface treatment and sterilization processes on the corrosion behavior of NiTi shape memory alloy显示文摘Thierry B Tabrization M Savadogo O 2002J Biomed Mater Res2002,51,4:1
11Enhancement of elec- trochemical properties of platinum doped LiFePO4/C cathode material synthesized using hydrothermal method 显示文摘Talebi-Esfandarani M Savadogo O 2014Solid State Ionics2014,261,:1
12显示文摘Savadogo O Mandal K C 1992Sol Energy Mater Sol Cells1992,26,:1
13Effect of sterilization processes on NiTi alloy surface characterization显示文摘Thierry B Tabrizian M Savadogo G 2000Biomed Mater Res2000,49,:1
14Farm Productivity in Burkina Faso:Effects of Animal Traction and Nonfarm Income显示文摘Savadogo K T.Reardon K.Pietola 0,,08:1
15显示文摘Xing B Savadogo O 1999Journal of New Materials Electro- chemical Systerm1999,2,1:1
16On the concept of synergetic systems of composite or modified materials and their electrocatalytic properties: (1) General approach 显示文摘SAVADOGO O 2002International Journal of Hydrogen Energy2002,27,2:1
17Emerging membranes for electrochemical systems (I) Solid polymer electrolyte membranes for fuel cdl systems 显示文摘Savadogo O 1998J New Mater Electrochem Syst1998,1,:1
18Effects of grazing intensity and prescribed fire on soil physical and hydrological properties and pasture yield in the savanna woodlands of Burkina Faso 显示文摘Savadogo P Sawadogo L Tiveau D 2007Agriculture Ecosystems & Environment2007,118,14:1
19查看详情显示文摘Xing B Savadogo O 0,,:1
20Low-teperature Direct Propane Polymer Electrolyte Membranes Fuel Cell( DPFC ) 显示文摘Savadogo O Varela F J Rodriguez 2001Journal New of Materials for Electrochemical Systems2001,4,2:1
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