Materials Literature
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Composite materials of mesoporous carbon and carbon nanotubes were synthesized using Ni, Co and Pd-loaded CMK3 via a catalytic reaction of methane and $CO_2$ . The CNTs grew from the pores of the mesoporous carbon supports, and they were attached tightly to the CMK3 surface in a densely tangled shape. The CNT/CMK3 com…
ABSTRACT The incorporation of carbon nanotubes to thermoplastic fibers can potentially improve mechanical, thermal and electrical properties. In this article, a methodology to tailor the mechanical properties of carbon nanotube/nylon fibers is presented. Multiwalled nanotubes (MWNT) were combined to polyamide 12 throu…
Based on shaped charge technology, the method of linear cracks of directional fracture in rocks controlled blasting by shaped charge and the elliptical bipolar linear shaped charge with low detonation velocity explosive was presented in this paper. The stress testing experiment was carried on by the stress sensor for…
In this study the effects of adding alkaline-earth (IIA) metal oxides to NiZr-loaded Zeolite Y catalysts were investigated on hydrogen rich production by ethanol steam reforming (ESR). Four kinds of alkaline-earth metal (Mg, Ca, Sr, or Ba) oxides of 3.0% by weight were loaded between the $Ni_6Zr_4O_{14}$ main catalyti…
Dongjin Semichem Co. Ltd, Hwasung, Gyunggi-do 445-935, KoreaReceived May 14, 2013, Accepted June 7, 2013Key Words : OLED, Blue-emitter, Anthracene, Triphenylsilyl, ElectroluminescenceThe red, green, and blue emitters with relatively equalstability, efficiency, and color purity are needed to achievefull-color displays…
pht = phthalic acid] have been hydrothermally synthesized. X-raydiffraction analysis reveals that the complexes 1 and 2 represent a 4-connected diamondoid topology with a 3-fold interpenetrating feature. Moreover, the fluorescent properties of complexes 1 and 2 are studied.Key Words : Hydrothermal synthesis, Complex,…
Methenyltetrahydromethanopterin cyclohydrolase (Mch) is involved in the methanogenesis pathway of archaea as a C1 unit carrier where N(5) -formyl-tetrahydromethanopterin is converted to methenyl-tetrahydromethanopterin. Mch from Methanobrevibacter ruminantium was cloned, purified, crystallized and its crystal structur…
Carbon-fiber-supported NiO catalytic filters for oxidation of volatile organic compounds were prepared by electroless Ni-P plating and subsequent annealing processes. Surface structure and crystallinity of NiO film on carbon fiber could be modified by post-annealing at different temperatures (500 and $650^{\circ}C$ ).…
The BaFe12O19/multiwall carbon nanotubes/poly(3‐methyl‐thiophene) (BaFe12O19/MCNTs/P(3MT)) composites were synthesized through an in situ chemical polymerization of 3‐methyl‐thiophene (3MT) in the presence of BaFe12O19/MCNTs composite powders. The BaFe12O19/MCNTs/P(3MT) composites were characterized by the fourier tra…
Three push-pull organic semiconductors, TPA- $Th_3$ -MMN (1), TPA-ThTT-MMN (2), and TPA-ThDTT-MMN (3), comprising a triphenylamine donor and a methylene malononitrile acceptor linked by various ${\pi}$ -conjugated thiophene units were synthesized, and the effects of the ${\pi}$ -conjugated bridging unit on the photovo…
Cobaltic protoporphyrin IX (CoPP) was grafted on GaAs(100), Si(111), and highly oriented pyrolytic graphite, HOPG(0001), surfaces using different preparation conditions. Modified surfaces were characterized by X-ray photoelectron spectroscopy (XPS) and high-resolution electron energy loss spectroscopy (HREELS) recorde…
ABSTRACT Monomers derived from renewable recourses have the potential to become the biobased alternatives for petroleum derived chemicals in the production of polymers. Glycerol, the byproduct of biodiesel refining, and propylene glycol derived from glycerol are promising candidates which can be used in the synthesis…
The authors describe here the transformation and precipitation behaviour of Ti–Mo bearing high-strength medium-carbon steel during continuous cooling, using a combination of thermo-simulation and microscopy approach. The study demonstrates that Ti and Mo carbides precipitate during austenite-to-ferrite, austenite-to-b…
Predictions of protein-protein binders and binding affinities have traditionally focused on features pertaining to the native complexes. In developing a computational method for predicting protein-protein association rate constants, we introduced the concept of transient complex after mapping the interaction energy su…
The time and temperature dependence of the mechanical response of a series of polyester-based hexa(methoxymethyl)melamine cross-linked coil coatings was investigated. Small strain experiments such as dynamic mechanical analysis and stress relaxation are used to determine the parameters required for time–temperature su…
In this paper, a thermal-electrochemical model of Li-ion battery was developed based on P2D model, and a set of parameters which related to PHM characteristics were proposed along with the parameter sensitivity analysis. Sensitivity value matrixes were also presented to describe the sensitivity of model output when pa…
Organo‐montmorillonite/nitrile butadiene rubber (OMMT/NBR) nanocomposites were prepared by co‐coagulating process, and then were combined with rubber ingredient and vulcanized by traditional rubber mixing procedure. The SEM micrographs of the nanocomposites showed uniform dispersion of the OMMT particles in NBR. The A…
Pore structure in the thin porous Ni films fabricated by supercritical CO 2 emulsion was found to be affected by number of ethylene oxides (EO n ) in head group of the nonionic fluorinated surfactants (PFP 3 -EO n ) used. The pores were formed by adhesion of micelles on the cathode surface during electroplating. Prope…
The electronic structure and elastic properties of the 4d transition metal carbides MC (M = Y, Zr, Nb, Rh) were studied by means of extended Huckel tight-binding band electronic structure calculations. As the valence electron population of M increases, the bulk modulus of the MC compounds in the rocksalt structure doe…
Layered $Li_{1.2}(Fe_{0.16}Mn_{0.32}Ni_{0.32})O_2$ was prepared by the mixed hydroxide method at various temperatures. Xray diffraction (XRD) pattern shows that this material has a ${\alpha}-NaFeO_2$ layered structure with $R{\bar{3}}m$ space group and that cation mixing is reduced with increasing synthesis temperatur…