Materials Literature
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The existence of forced and natural melt convections in the liquid in front of dendritic tip will Change the thickness of diffusion layer, which can significantly influence the dendrite morphology. Using the cellular automaton method and considering the influences of melt convection and heat transfer on microstructure…
A novel bis-arylated indole derivative, 2,5-bis(2-naphthyl)-1-methyl-1H-indole, was prepared and characterized.This compound shows the highly pure blue emissions both in solution and solid state which were ascribed to the expanded !-conjugation by introduction of two 2-naphthyl groups at the 2 and 5 positions on the i…
Activation polypropylene (PP) fibres used for reinforcement of concrete was tested in atmospheric pressure Diffuse Coplanar Surface Barrier Discharge generated in ambient air. The surface properties and wettability were studied by contact angle measurement and amount of absorbed water measurement. Surface morphology w…
The flame retardant property of calcium alginate fibers is characterized by limiting oxygen index method and cone calorimeter.The results show that the limiting oxygen index of calcium alginate fibers is 34.4%,no flame burning in air and extinguishes instantly as soon as they are moved away from fire.During combustion…
The use of plant-based medicines and various minerals to treat diseases is believed to date back to prehistoric medicine. Ancient texts from the Ramayana and The Papyrus Ebers make references to malignant diseases and their treatments [1]. However, it was not until the early twentieth century that the first modern dru…
添加塩基存在下，Keggin 構造をもつヘテロポリ酸を用いてイソブチルビニルエーテルの不均一カチオン重合を検討した．H3PW12O40 を用いた場合，従来のリビングカチオン重合の条件下では副反応が起こり重合反応を制御できなかったが，酢酸エチル中，ジメチルスルフィド存在下，−30℃ で重合を行うとリビング重合が進行するようになり，分子量分布の非常にせまい(Mw/Mn<1.1)ポリマーが得られた．生成ポリマーの分子量は，H3PW12O40 のすべてのプロトンから重合反応が開始したと仮定した場合の計算値によく一致し，重合率に比例して増加した．また，MALDI-TOF-MS の結果からは，生成ポリマーがプロトンによる開始，メタノール(停止…
A brand-new magnetostrictive/piezoelectric laminated composite is presented using the giant magnetostrictive Terfenol-D, piezoelectric PZT and high-permeability FeCuNbSiB. Since the high-permeability FeCuNbSiB changes the effective magnetic field in the Terfenol-D and the deformed FeCuNbSiB applies a stress to the Ter…
On the basic of the coordinate transformation theory, we deduce the condition for irregular polyhedron cloaks and obtain tensor expressions of electromagnetic parameters. Using tensor expressions of electromagnetic parameters, we verify the effect of 4-sided polyhedron cloak and 14-sided polyhedron cloak through full-…
In the design of several types of electromagnetic devices with magnetic core, electrical machines included, an essential problem is which characteristics have to be used. If adequate characteristics are not available even computer programs of high accuracy cannot allow results of high precision. In the present paper t…
The aim of the current investigation was to study the suitability of pruning of vine (Vitis vinifera L.) as a lignocellulosic material for the production of wood-cement composite panels, enhance their compatibility with cement using various pretreatments and chemical additives. Hydration tests of net cement and vine-c…
The corrosion resistance of 316L stainless steel in 65 wt % ethanol, 35 wt % water, 1 wt % H 2 SO 4 solution containing different NaCl concentrations and at different temperatures was investigated using open circuit potential measurements, polarization curves, and electrochemical impedance spectroscopy. At 25°C, the m…
Single-walled carbon nanotubes (SWNTs) can exhibit large electromechanical responses to strain and are therefore promising candidates for next generation nano-electromechanical systems (NEMS). A platform for SWNT integration is presented that aims for strainable, TEM-compatible field-effect transistors, useful for bot…
We report an all-printed thin-film transistor (TFT) on a polyimide substrate with linear transconductance response. The TFT is based on our purified single-walled carbon nanotube (SWCNT) solution that is primarily consists of semiconducting carbon nanotubes (CNTs) with low metal impurities. The all-printed TFT exhibit…
Dodecyl itaconate (DI) was used as the dispersant for preparation of mono-dispersed carbon nanotubes in aqueous solution in this study. It is a unique type of anionic surfactant synthesized by the authors, and its high capability for dispersing CNTs is attributed to the double bond moiety on its head-group. Furthermor…
Crystallization temperature of GeTe/Ge 2 Sb 2 Te 5 nanocomposite multilayer films can be tuned by adjusting the thickness ratio of GeTe to Ge 2 Sb 2 Te 5 . Phase-change memory devices with GeTe/Ge 2 Sb 2 Te 5 multilayer films exhibited relatively lower RESET voltages as compared to a device with pure Ge 2 Sb 2 Te 5 ,…
Gadolinia-doped ceria (GDC) solid electrolytes with small additions (0.25 wt.%) of SiO X as sintering aids were prepared by the sol–gel method. Material characteristics of the prepared and calcined electrolyte samples were identified by X-ray diffraction for crystalline structures and scanning electron microscopy for…
This study investigates the thermoluminescence produced when calcium sulfate codoped with Eu3+ and Pr3+ (CaSO4:Eu3+,Pr3+) is irradiated with X-rays. CaSO4:Eu3+,Pr3+ was synthesized by heating CaSO4·2H2O:Eu3+,Pr3+ at 1050°C. The CaSO4:Eu3+,Pr3+ exhibited red emission upon X-ray irradiation and subsequently emitted an a…
Corrosion is one of the important structural integrity concerns of aging aircraft, and it is estimated that a significant portion of airframe maintenance budgets is directed towards corrosion-related problems for both military and commercial aircraft. In order to better understand how environmental factors influence t…
The behavior of hydrogen in an ultrafine-grained electrodeposited pure iron with Lankford (r) value larger than 7.0 was studied by small angle neutron scattering (SANS) and thermal desorption spectroscopy (TDS). Nano-sized inhomogeneity consisting of hydrogen bubble exists in the deposited specimen. The bubble size in…
Polyurethane pressure-sensitive adhesives as raw materials for the manufacturing of protective films The present paper relates to water-borne polyurethane pressure-sensitive adhesives (PU-PSA) systems for self-adhesive protective films, and methods of their preparation. The typical protective films are self-adhesive f…