Materials Literature
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Ni0.50Cu0.25Zn0.25LaxFe 2-xO4 ferrites (with x = 0.00-0.09) were prepared by a simple method using metal nitrates and freshly extracted egg white. The proper calcination temperature for ferrites formation was estimated using thermo-gravimetry technique (TG). The samples were characterized using X-ray diffraction (XRD)…
The influence of chemical treatment time and temperature on production of chemi-mechanical pulp from Colza stem is studied. Three treatment times (15, 30 and 45 minutes) and two treatment temperatures (125 and 145 °C) were investigated. Chemical charge as 4% NaOH and 8% Na2SO3 as was kept constant. Accepted pulp yield…
Porous silicon films with a variety of porosities pore geometries, and pore network morphologies were formed by electrochemical anodization of crystalline silicon in hydrofluoric acid-based electrolytes. The elastic properties of microporous films formed on p⁻ type substrates and mesoporous films formed on n⁺ type sub…
以硫酸镍和硫酸锰为原料、聚乙二醇为结构导向剂，采用化学共沉淀的方法制备了纳米片状的锰掺杂氢氧化镍。用X射线衍射（XRD）、场发射扫描电镜（SEM）对样品的结构和形貌进行了表征；用傅里叶变换红外光谱（FT-IR）和热重分析（TG）手段对样品的成分进行了测定；用循环伏安、恒电流充放电等测试方法对其电化学性能进行研究。研究结果表明，采用该方法制备的样品，其电化学性能随锰含量的增加而变化；锰含量为30%时性能最佳，其比容量可达330mAh／g，有望成为Ni／MH电池的正极材料。
The basic procedures are determined to provide the outgoing characteristics of gas temperature field and operating process stability in case of widely changed engine operation mode
In this study two types of paper sludge, prepared by Mazandaran wood and paper company and Latif papermaking company along with wood flour utilized as plastic filler in polypropylene and high density polyethylene based composites. Weight percentage ratio of coupling agent, polymer and filler were kept constant 2%, 38%…
Titanium oxidation was studied between 400 and 800°C with oxygen partial pressures over the range 760 to 10⁻⁵ mm Hg and times up to 20,000 minutes. Oxidation rates were measured with a Cahn electrobalance after sophisticated metal preparation and experimental procedures. Growth effects in the oxide film were thoroughl…
Import 04/07/2011
Colloque avec actes et comité de lecture. Internationale.
16月8日下午，国家发改委在京召开新闻发布会，介绍了近日修订完成并公布的《产业结构调整指导目录（2011年本）》。国家发改委产业司负责人指出，产业结构调整是当前和今后一段时间的重要任务，而新版目录是政府引导投资方向、管理投资项目、制定和实施财税、金融、土地、进出口等政策的重要依据。其中，有色金属新建、扩建钨、钼、锡、锑开采、冶炼项目，稀土开采、选矿、冶炼、分离项目以及氧化锑、铅锡焊料生产项目；单系列10万吨／年规模以下粗铜冶炼项目；
Part I We have synthesized a series of 7-azaindole (7AI) bearing cyano groups. The interplay between excited-state charge and proton transfer reactions in protic solvents is investigated in a series of 7-azaindole derivatives: 3-cyano-7-azaindole (3CNAI), 5-cyano-7-azaindole (5CNAI), 3,5-dicyano-7-azaindole (3,5CNAI)…
A qualitative analysis of current creep theory has been made by studying the creep of polycrystalline lead. The behaviour of the low temperature stress-strain curve with prior creep history, and the strain response to decreases in creep stress were examined. The effect of temperature and creep strain on the low temper…
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Part Ⅰ： An multifunctional electrochemical sensor for determination of hydrogen peroxide, oxygen, and hypochlorite has been developed by the hybrid film of poly(neutral red) and FAD. This hybrid film was prepared by electro-codeposition involving electrostatic interaction between FAD and PNR. It was known for a good m…
. The kinetics of the absorption of carbon monoxide by basic solutions was studied at 80°C and carbon monoxide pressures up to 30 atmospheres. The reaction was followed by the rate of decrease of carbon monoxide pressure in a closed system. The observed kinetics in potassium hydroxide solutions yield a rate law of the…
This research investigates efficiency of poly(styrene-stat-chloromethylstyrene (ClMS)) (P(S-ClX)) copolymers and Fe3O4 nanoparticles as dewetting inhibitors for polystyrene (PS) thin films of thickness less than 50 nm. Chloromethylstyrene (ClMS) ratios in the P(S-ClX) copolymers are 5, 20 and 45 mol% and the copolymer…
The article covers operating practices calculation procedure on combined marking with application of electrical field. Information is applied on parts made of multiplayer materials with dielectric as a surface layer
阐述了依据清净剂及其加剂汽油的热稳定性预测其控制发动机沉积物的可行性。用热分解率（TGA）从购自汽车售后市场8款清净剂中挑选2款特定热稳定性的清净剂,分别按规定浓度添加在2台试验车的汽油中进行1000 km道路试验。结果表明,这2款清净剂控制CCD、IVD及PFID的实际效能与其由TGA热稳定性预测的清净效能完全吻合,因此TGA能有效取代清净剂台架试验评定。
Introduction: Structural and magnetic properties of ferromagnetic Fe thin layer films on Si substrates have been reported. We present topography features of these nanostructures films by atomic force microscopy (AFM). Characterization of magnetic domains and walls between them can be performed by using magnetic force…
x students continually surprised me, contributed significantly to the work written here, and brightened each day in the lab.I am so happy that I was able to work side by side with these amazing undergraduates.I also thank my committee members for their advice, time and support -Ross Dalbey, Mark Foster, Will Ray and T…