Materials Literature
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XMCD of Fe L 2,3 -edge and EXAFS of Fe and Cr K -edge measurements were carried out for Fe/Cr multilayer films which were deposited with several conditions. Magnetic moment of Fe was weakly depending on the film thickness. Relation between the disorder of the local structure and the coercivity was investigated. From E…
Immobilization of anti-CD34 antibody is proven to be an effective strategy to accelerate reendothelialization and thereby lower the thrombosis of blood contacting grafts. To realize highly efficient immobilization of anti-CD34 antibody, an argon cold plasma-mediated graft process was developed with PEG as spacer arm i…
Covariance mapping is used to investigate electron emission of double core hole states and associated decay processes of atoms and molecules upon absorption of multiple X-ray photons provided by an FEL source.
We have measured the x-ray spectra from highly charged Si, S and Cl ions in collisions with thin foils using a high-resolution x-ray spectrometer. The observed lines have been assigned to various transitions in H-, He- and Li-like ions. For proper identification of line positions, the theoretical calculations have bee…
Isoquercitrin (IQ)은 폴리페놀의 일종인 quercetin (QU)의 3번 위치에 glucose가 하나 결합해 있는 배당체로서, 천연에는 미량만이 존재하고 있다. 최근 QU의 2배당체인 rutin (RU)을 기질로 사용하여 효소에 의한 부분 가수분해에 의해 IQ를 합성할 수 있다는 것이 알려졌다. 본 논문에서는, $Pecinex^{TM}$ 계열의 복합 효소를 사용하여 RU의 선택적 가수분해에 의해 IQ를 합성하는 반응에서 최적 효소를 선정하고, 효소량 및 반응물의 농도 등의 변수에 따른 반응성을 검토하였다. 그 결과, $50^{\circ}C$ 에서 1%…
Due to the spin-orbit interaction, the electron scattering from the nucleus is sensitive to the spin orientation of that electron. This is used for polarimetry of electron beams in the Mott method. The spin-orbit interaction was also observed in bremsstrahlung. In this article we analyze its potential for polarimetry…
Nanoshell formation has been studied experimentally in Ag/Au and Ag/Pd systems in a hemispherical geometry at different temperatures. The void formation in these systems is the result ofpureKirkendall-porosity formation, because it is caused mainly by the inequality of the intrinsic atomic fluxes and other effects (e.…
Stabilized polypropylene synthesis is carried out using supported titanium catalyst system in presence of phenols. The effect of phenolic compounds such as 2,2′-methylenebis(4-tert-butyl-6-methylphenol) (PH1) and 4,4′-methylenebis(2,6-di-tert-butylphenol) (PH2) is studied on the productivity and stereospecificity of c…
The evolution of structure of high-strength heavily deformed Cu-Nb composites processed by two different methods (melt-and-deform and bundle-and-deform) is briefly reviewed based on the authors’ (with their coauthors) original studies and the available publications. Specific features of their texture are considered. I…
In this work an innovative methodology was employed for monitoring the fracture behavior in silicon carbide fiberreinforced ceramic matrix composites. This new methodology was based on the combined use of IR thermography and acoustic emission. Compact tension SiC/BMAS specimens were tested with unloading/reloading loo…
Abstract Boron nitride can be used as a good catalyst carrier because of its high thermal conductivity and chemical stability. However, a high specific surface area of boron nitride is still desirable. In this work, a carbon fiber composite coated with boron nitride villous nano-film was prepared, and was also charact…
Ti 1- x Fe x O 2-δ thin films have been deposited on Nb-doped SrTiO 3 substrate by RF magnetron sputtering. The as-deposited thin films prepared at T sub = 300 ~ 500°C exhibit anatase structure. The lattice constant depends on the crystallization temperature. The substitution of Fe ions is confirmed by photoemission s…
A technique for three-dimensional visualization of grain boundaries was developed at BL28B2 at SPring-8. The technique uses white X-ray microbeam diffraction and a rotating slit. Three-dimensional images of small silicon single crystals filled in a plastic tube were successfully obtained using this technique for demon…
Using scanning transmission X-ray microscopy (STXM), in this report we visualized the magnetic dipolar interactions in nanocrystalline Nd-Fe-B magnets and imaged their magnetization distributions at various applied fields. We calculated the magnetic dipolar interaction by analyzing the interaction between the magnetiz…
Computational fluid dynamics simulation of an apartment underground elevator hall has been carried out to study the effect of dehumidifier locations on condensation problem. In Case 1, horizontal position of humidifier is studied. It is installed at entrance, center or the inside of the elevator hall. In Case 2, insta…
The high-energy phonons in La1.5Sr0.5NiO4, in which the checkerboard charge ordering is formed, was investigated by the inelastic neutron scattering. We found that the longitudinal modes show strong anomalies compared with La2NiO4. We argue the similarity and difference in the phonon anomalies between the present samp…
Polyhexamethylene guanidine hydrochloride(PHMG) was uesd to produce a long-acting antimicrobial polyethylene terephthalate(PET) masterbatch(PET-g-PHMG),which was obtained by covalently bonding 15% PHMG based on total weight onto PET matrix. Attributed to the higher grafting efficiency(93. 7%),the hydrophilic PHGH is u…
Elevated temperature homogenization was explored to improve the toughness of cast Eglin steel. Homogenization times were calculated using secondary dendrite arm spacing (SDAS); however, the primary trunk spacing was found to be the rate controlling distance parameter for complete homogenization. Sufficient evidence is…
The protection of offshore wind farms (OWFs) against overvoltages, especially resonant overvoltage, is of paramount importance because of poor accessibility and high repair costs. In this paper, we study how switching overvoltages at the wind turbine transformer (WTT) medium voltage (MV) side can lead to high overvolt…
Efficient upconverted photocurrent (PC) generation was verified for excitation of shallow InAs quantum well island (QWI) structures embedded in AlGaAs. Despite the weak absorption of a single layer with height of a few monolayer, about 0.04% increased external quantum efficiency for conversion of narrow monochromatic…