Nanoestructuras metal-orgánicas de varias dimensiones por combinación de Fe y PTCDA en Au(111) por STM y XPS
Nanoestructuras metal-organicas de varias dimiensiones por combinacion de fe y ptcda en au (111) por stm y xps
Materials Literature
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Formation of lanthanum zirconates in solid oxide electrolysis cells : experimental studies
Versa Power Systems solid oxide cells were tested with the objective of performing long term electrolysis testing and studying their degradation and, more specifically, the creation of insulating phases of lanthanum zirconates.Three cells were tested but only one sustained long term electrolysis testing.The other two…
Super-strong nanotube cables
*Laboratory of Bio-Inspired Nanomechanics “Giuseppe Maria Pugno”, Dept. of Structural Engineering and Geotechnics, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, ITALY. Tel: +39 011 564 4902; Fax: +39 011 564 4899; Mobile: +334 3097397; Email: nicola.pugno@polito.it **Executive Director, EuroSpacew…
SSS／AM／DAC共聚物的合成及其钻井液体系性能研究
尝试以苯乙烯磺酸钠（SSS）、丙烯酰胺（AM）和丙烯酰氧乙基三甲基氯化铵（DAC）为反应单体，过硫酸铵（APS）为引发剂，合成了一种水溶性三元共聚物。在单体总浓度为50％，SSS：AM：DAC=3：4：3（质量比），引发剂浓度为1．5％，反应温度72-76℃时，得到特性粘度较高的共聚物，通过红外光谱对聚合物进行了结构表征。利用旋转粘度计、失水仪和扫描电镜为评价工具，对共聚物钻井泥浆各种性能进行研究，结果表明，SSS／AM／DAC共聚物钻井液体系具有良好的降滤失、耐温抗盐能力。
松萝酸（C18H16O7）的晶体结构与DFT理论研究
以秦岭太白山地衣太白茶为原料,提取、分离其中的活性成分松萝酸.用高分辨快原子轰击质谱（HR-FABMS）确定了化学式,1H-NMR表征了分子结构,单晶X-射线衍射确定了晶体结构;并用Gaussian 03程序、密度泛函（DFT）方法计算了该化合物的优化结构、电荷分布、前线轨道能量及其组成.结果表明,该物质的晶体属于正交晶系,P2（1）2（1）2（1）空间群,a=8.007 4（11）A,b=18.818（3）,c=20.200（3）A,α=β=γ=90°,V=3 043.8（7）A^3,Z=8,Dc=1.503 g/cm^3,F（000）=144 0,μ（MoKa）=0.117 mm-1,R1=0.032 6,wR2=0.077…
介质pH对银基上4-甲基-4H-3-巯基-1,2,4-三氮唑成膜结构和缓蚀性能影响的SERS和电化学研究
在不同pH介质中,缓蚀试剂4-甲基-4H-3-巯基-1,2,4-三氮唑（4-MTTL）都能在银基底上形成自组装膜。SERS光谱表明：当pH=3时,4-MTTL分子是以硫醇式,通过两个氮原子为吸附位点,以较平躺方式在银表面构筑自组装膜;当介质为pH=7和pH=11时,4-MTTL以硫醇式,通过氮和硫原子为吸附位点倾斜或垂直方式作用于银表面。由于后者的吸附方式比前者更为垂直于表面,所以形成的膜中分子排列更为致密。电化学极化实验也表明,在pH=3的条件下,形成的4-MTTL单层有更正的腐蚀电位;在pH=11时,构筑的膜缓蚀能力强于pH=7的。并由电化学交流阻抗数据解析了相应的缓蚀机理。
Emerging catalytic applications of transition metal oxide nanomaterials under microwave and conventional heating
Heterogeneous transition metal oxide catalysts have advantages over homogeneous catalysts, such as easy separations and efficient recycling and minimization of metal traces in the products. Transition metal oxide nanomaterials with different properties such as shapes and particle size were synthesized by hydrothermal,…
Synthesis And Characterization Of Metal Complexes Containing Tetrazolate, Poly(tetrazolyl)borate, And Aryl Pentazole Ligands As High Energy Density Materials
Heavier alkaline earth metal tetrazolates have been prepared as cryatals contain aqua ligands and as anhydrous powders, and were characterized by spectral and analytical methods. Potassium bis(tetrazolyl)borate complexes K(BH2(RCN4)2)(H2O)n (R = H, Me, NMe2, and NiPr2) and their 18-crown-6 adducts have been synthesize…
回收聚乙烯醇缩丁醛（PVB）/ABS共混体系的制备及力学性能
采用转矩流变仪,通过共混方法制备了回收PVB/ABS合金、增容PVB/ABS合金和纳米CaCO3填充改性PVB/ABS合金,研究了PVB对ABS、增容PVB/ABS合金和纳米CaCO3对增容PVB/ABS合金力学性能的影响.结果表明,加入ABS-g-MAH和SAN-g-EPDM可改善PVB/ABS相容性和力学性能,ABS-g-MAH增容共混物力学性能优于SAN-g-EPDM增容体系,ABS-g-MAH加入量为5%～7%,纳米CaCO3添加量为5%时,PVB/ABS共混体系具有最优的综合力学性能.
Determining The Excited State Properties of Novel Aryleneethynylenes
The first chapter introduces the area of phenyleneethynylenes. The parent of the novel systems presented here, 1,4-bis(phenylethynyl)benzene (BPEB), is an ex- tended π–conjugated system, known for its interesting structural, optical and elec- tronic properties. Derivatives of this system have demonstrated great potent…
Oxime based manganese molecular magnets
The synthesis and characterisation of a large family of hexametallic [MnIII 6] Single-Molecule Magnets with general formula [MnIII 6O2(R-sao)6(X)2(L)4-6] (where sao2- = dianion of salicylaldoxime; R = H, Me, Et, Ph; X = O2CR' (R' = H, Me, Ph etc), Hal , O2PHPh or O2P(Ph)2; L = solvent) are presented. Deliberate struct…
Novel carbon-based materials for use in extracorporeal systems
Activated carbons possess many of the properties desirable for use as a sorbent material in extracorporeal systems.They are physically and chemically stable, may be modified in terms of porosity or surface chemistry, thus allowing a wide range of sorbent materials to be produced.One drawback of activated carbons is th…
The Study of Antibacterial Effect of the A2O-B2O3 - CaO - P2O5 System
The present paper studied the antibacterial effect of the 1.5Ag2O 98.5% [47 B2O3 (53-x)CaO xP2O5] system for 0 ? x ? 10, by the diffusion method in agar. The oxidic system has an inhibitive effect upon both studied strains of Pseudomonas and Staphylococcus aureus, bacterial growth being inhibited to a maximal diameter…
Analiza właściwości mikromechanicznych i tribologicznych powłok nanokompozytowych nc-WC/a-C i Nc-WC/a-C:H
ANALYSIS OF MICROMECHANICAL AND TRIBOLOGICAL PROPERTIES OF nc-WC/a-C AND nc-WC/a-C:H NANOCOMPOSITE COATINGS
Al-Zn-Mg-Cu合金热压缩流变应力行为及组织演变
采用Gleeble-1500D热力模拟试验机进行了Al-Zn-Mg-Cu合金的等温压缩实验,变形温度为250～450℃,应变速率为0.001～0.1s^-1,变形量为10%～50%,获得了热压缩变形的真应力-真应变曲线。应力-应变曲线基本呈现回复型曲线特征,计算得出其应力指数为4.60,热变形激活能为186.70kJ.mol^-1;综合分析了变形温度、应变速率和变形量对组织演变的影响规律,确定了Al-Zn-Mg-Cu合金的锻造工艺参数为：锻造温度区间420～350℃,应变速率0.01～0.1s-1,变形量〉30%。
球磨法制备Mg2Ni—xMLNi3．8Co0．75Mn0．4Al0．2储氢合金的电化学性能研究
研究了球磨方法制备的Mg2Ni-xMLNi3.8Co0.75Mn0．4Al0.2（x=0，10，20，30）复合型镁基储氢合金的电化学性能。结果表明，相比原始Mg2Ni合金，添加球磨制备的MLNi3.8Co0.75Mn0.4Al0.2复合型镁基储氢合金的循环放电性能和电化学催化活性都得到改善，其中以Mg：Ni-30wt％MLNi3.8Co0.75Mn0.4Al0.2复合型镁基储氢合金的电化学性能改善效果最佳。
Magnetic and Magnetoresistive Properties of Nanocrystalline Pr[sub 1−x]A[sub x]Mn[sub 1−y]Co[sub y]O[sub 3] (A = Sr, Ca; x = 0.3, y = 0.5)
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Rabindra Nath Mahato, K. Sethupathi, V. Sankaranarayanan; Magnetic and Magnetoresistive Propertie…
Co-occurrence of Dominant Direct and Indirect Transitions in Low Temperature Sputtered Indium Tin Oxide Thin Films on Polymers
铟听氧化物(ITO ) 层被在房间温度劈啪作响的 rf 磁控管在 polymethylmethacrylate 和聚乙烯 terephthalate 上准备。他们的 3D-AFM 图象和可见发射度系列对比地被描绘并且学习。他们的最高的 ITO 层上的聚合物底层的有趣的词法效果被观察。从光系列推出的主导的直接、间接的转变类型令人惊讶地在不同聚合物上在 ITO 电影被发现。而且，质的乐队结构被考虑，并且关于光乐队的关联的一些理论讨论组织接口 / 表面形态学和搬运人密度也被介绍。[从作者抽象]
Microstructure and optical properties of TiO2 thin films deposited at different oxygen flow rates
为了研究氧流动的影响，在 TiO2 薄电影的结构、光的性质上评价，玻璃上的 TiO2 电影被反应磁控管劈啪作响扔。微观结构和光性质被 X 光检查 diffractometry， AFM 和紫外力的发射度光谱学分别地测量。这些电影以 10 mL/min 的氧流动率扔了的结果表演有最低粗糙和最高的发射度。到氧流动评价的更长的波长的吸收角度移动从 5 ～ 10 mL/min 增加，然后从 10 ～ 30 mL/min 作为氧流动率增加到更短的。乐队差距是 3.38 eV，它在实验是将近不变的。为在 oxyge 流动率的 10 mL/min 扔的 TiO2 薄电影，有 nano 水晶的结构，它对反思考(AR ) 合适在太阳能电池结构系统的…
Influence of NaCl on dechromization of Cu-Cr-Al alloy in H3PO4 solution
Cu-Cr-Al 合金的 dechromization 被静态的沉浸腐蚀测试调查。dechromization 上的 NaCl 的影响被电气化学的测试分析，扫描电子显微镜学，光显微镜学和 X 光检查荧光光谱学。结果证明 Cu-Cr-Al 合金的 dechromization 将在 55 点发生在 11.32 mol/L 的一个 H3PO4 答案 ? 湡 ? 汥' 虪沟茟[楴杮琠浩吗？