Materials Literature
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본 연구는 1차 아민(MEA, monoethanolamine)으로 개질한 입자상 활성탄(WSC-470)을 이용하여 실내 저농도 이산화탄소를 제거하고자 하였다. MEA 함침농도(6.1∼42.7 wt.%)와 용매제(distillate water, ethanol, methanol) 종류에 따라 제조된 흡착제의 특성분석(BET, pore property, XPS)과 각 흡착제의 CO2가스에 대한 최대 흡착능, 3000 ppm의 저농도 CO2분위기에서의 흡착량을 측정하였다. MEA 농도가 증가할수록 물리적 특성인 비표면적, 공극률, 미세기공률 등은 감소한 반면, 표면 염기도…
Abstract not provided.
A study involving a new type of bio-scaffold patch developed in Australia, and in use to repair holes in the heart, has shown it offers an improved environment for stem cells.
Mechanical and chemi-mechanical pulps such as CMP, due to the weaker strength properties, have found limited application in the production of high quality papers as compared with chemical pulps. Therefore, appropriate modification of such fibers could be used to overcome such deficiencies. This study investigated the…
Research in single-molecule magnets has moved its focus recently from studies of d-block clusters, such as those containing Jahn-Teller distorted manganese(III).
This report provides a glimpse into our diverse research and development portfolio, wwhich encompasses both advanced nuclear science and technology and underlying technologies. IN keeping with the mission, INL's LDRD program fosters technical capabilities necessary to support current and future DOE-Office of Nuclear E…
O objetivo deste trabalho foi avaliar a corrosão sob tensão do aço API 5L X70 em meios de etanol de diferente proveniência: etanol anidro P.A., etanol da cana de açúcar (distintos lotes de uma refinaria) e etanol de milho. Nos ensaios utilizaram-se corpos de prova com entalhe em V, sob reduzida taxa de deformação (1,0…
The Mg2SiO4-MgTiO3-CaTiO3 composite dielectric ceramics with different Mg2SiO4 addition amounts were prepared by solid state reaction method. The effects of Mg2SiO4 addition amounts on the microstructure and dielectric properties as well as sintering temperature of xMg2SiO4-(0.95-x)MgTiO3-0.05CaTiO3 (abbreviated as xM…
The influences of re-sintering on the structure and electrochemical performance of LiNi1/3Co1/3Mn1/3O2 were researched in this paper. The synthesized materials were characterized and tested by means of X-ray diffraction (XRD) and electrochemical measurements respectively. It was found that the re-sintered samples with…
Electrochemical performance of solid oxide fuel cells based on Ni0.75Co0.25-GDC (Gd0.1Ce0.9O1.95) and Ni-GDC anodes were investigated and compared in order to understand the effects of (i) alloying Ni with Co and (ii) anode microstructure on the cell performance under hydrogen fuel. At the sintering temperature of 130…
ICDP rolls are produced by centrifugal casting and have outer shell made of indefinite chill cast and core is of nodular or flake graphite cast iron. During casting of the rolls, aim is to achieve full metallurgical bond between the shell and the core. Any disbonding, presence of flux/ slag at the interface or excess…
Series of ferroelectric glass-ceramic samples of Sr0.5Ba0.5Nb2O6 were synthesized by melting method. Firstly, analytical reagents were melted for 30 minutes at 1440°C after being grinded evenly according to a certain molar ratio, then annealed for 10 hours from 550°C to room temperature, finally it was sustained for 4…
Calcined powders with the composition of Sr1-xLaxFe2n-xCoxOα (x=0-0.4) were investigated. The addition amount of Si or Ca oxide and combinations thereof were varied to analyze the effects on microstructure and magnetic properties of the calcined powders. It has been proved that there are interactions between the addit…
Electrospun carbon nanofiber (CNF) webs with controlled density of states (DOS) are synthesized through varying the carbonization conditions to manipulate the concentration of nanosized graphite domains. These materials exhibit adjustable electrochemical activity and biosensitivity: both electron transfer kinetics for…
peer reviewed
Resulting from growing concerns on climate change and resources depletion, biomass has gained increased importance. Security of supply, better environment and economic development, as worldwide goals, are usually drivers for economic growth. Technology developments have adequately not responded to challenges to divers…
Motivated by the potential chiral spin liquid in the metallic spin ice Pr[subscript 2]Ir[subscript 2]O[subscript 7], we consider how such a chiral state might be selected from the spin-ice manifold. We propose that chiral fluctuations of the conducting Ir moments promote ferrochiral couplings between the local Pr mome…
Zn1-xCdxS alloy nanoparticles have been prepared via solvothermal approach. The effects of the mole fraction of Cd on the nanoparticles’ structure, size and photoluminescence spectra were investigated. It shows that with increase in mole fraction of Cd, the lattice structure of Zn1-xCdxS changes from cubic to hexagona…
Scanning electron microscopy (SEM) with X-ray mapping analysis was applied to systematically study the microstructure of ZrO2/Al2O3 multi-phase (ZTA) ceramics prepared by firstly cold isostatic pressing of the as-prepared powders with different formulas and then normal pressure sintering of green bodies at different t…
ECA184のmax-plus表現のEuler-Lagrange変換に関する文献ではステップ関数を用いた変数変換により, このCA のEuler 表現とLagrange表現を結びつける方法が示されている. この方法はステップ関数の性質と粒子の位置の単純増加性を用いたもので, ECA184以外の粒子CAにも直接この方法が適用できるはずである.本研究ではどのような粒子CA に対しこの方法が使えるのか, そのCA の一般形を求めた.