Materials Literature
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Purpose This paper aims to review the research status of fatigue behavior and fracture mechanism for C/C composites. Design/methodology/approach The fatigue behavior is related to many factors. The mechanical and physical properties were compared to evaluate the effect of fatigue under various experimental conditions,…
The reaction of 2,5‐diiodo‐1,4‐benzenedicarbonyl chloride, C6H2I2(COCl)2‐p, with 4‐hydroxy‐2,2,6,6‐tetramethyl‐1‐piperidinyloxy (TEMPO‐ol) gave I–Ph(COO–TEMPO)2–I, Monomer‐1. Pd‐catalyzed polycondensation of Monomer‐1 with Me3Sn‐Th‐SnMe3 (2,5‐bis(trimethylstannyl)thiophene) and Bu3Sn–CH = CH–SnBu3 (1,2‐bis‐(tributylst…
Abstract Corona inception voltage due to a water droplet on epoxy resin in an electrode gap is high under DC voltage compared to AC voltage. It is observed that, as the contact angle of the epoxy nanocomposite material becomes higher, the corona discharge inception voltage increases. The droplet movement is observed,…
Gamma-ray spectroscopic measurements of low-level environmental samples require the reduction of the background as low as practicable. In the present work, we investigate the advantages of adding Hg passive shielding inside a low-background Pb-shield to further reduce the background radiation. The background count rat…
We have studied the effect of head group and alkyl chain length on β-phase formation in poly(9,9-dioctylfluorene) (PFO) solubilized in phospholipid liposomes. Systems studied have three different alkyl chain lengths (1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine [DMPC], 1,2-didodecanoyl-sn-glycero-3-phosphatidylcho…
800x600 A PROGRAMMING FOR POINT REACTOR KINETIC EQUATION USING LABVIEW . Development a program package that is able to simulate nuclear reactor operation system is useful to support socialization of nuclear power plant to society. Neutronic aspect of this simulator models reactor core as a point in order to simplify s…
Employing metal-organic frameworks (MOFs) as precursors, a series of CuO/CeO_2 catalysts was prepared and applied for CO-PROX(preferential oxidation of CO) in H_2-rich stream. Compared with previously reported A-600 catalyst[A-600 catalyst was obtained by thermal treatment of the Cu_3(BTC)_2 precursors with Ce^(3+) io…
This work describes a study of the synthesis and photoluminescent properties of strontium aluminate nano-phosphors co-doped with the lanthanide ions, Eu2+ and Dy3+, and the transition metal, Cr3+, prepared via a microemulsion synthesis followed by calcination. Chapter one presents an overview of persistent luminescenc…
Gold has been shown to have potential advantages as a catalyst in a wide variety of chemical reactions, and hydrogenation is positioned as one important catalytic application of this metal. Indeed, hydrogenation is an important reaction in many areas of the chemical and petrochemical industries, where a continuous eff…
Strong luminescence emission at 0.93 eV appears on some specific grain boundaries in multicrystalline silicon. The emission is generated on spots, forming irregular pattern along those grain boundaries. The spots show also strong non-radiative recombination. Fitting the temperature dependence using an Arrhenius plot i…
The three transition-metal complexes, (meso-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ⁴N)bis(perchlorato-κO)copper(II), [Cu(ClO₄)₂(C₁₈H₄₀N₄)], (I), (meso-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ⁴N)bis(nitrato-κO)zinc(II), [Zn(NO₃)₂(C₁₈H₄₀N₄)], (II), and aquachlorido(meso-5,7,7,1…
Macrocycles are interesting molecules because their topological features and constrained properties significantly affect their chemical, physical, biological, and self-assembling properties. In this report, we synthesized unique macrocyclic peptides composed of both an α-helix and a polyproline segment and analyzed th…
Measurements of temperature and field dependent bulk properties have been carried out on ${{\mathrm{Ce},\mathrm{La}}}_{3}{\mathrm{Pd}}_{4}{\mathrm{Si}}_{4}$. Rietveld refinements of x-ray powder intensity data confirm the orthorhombic ${\mathrm{U}}_{3}{\mathrm{Ni}}_{4}{\mathrm{Si}}_{4}$-type structure for both compoun…
Baugé, S. M. Y., Lavkulich, L. M. and Schreier, H. E. 2013. Phosphorus and trace metals in serpentine-affected soils of the Sumas Basin, British Columbia. Can. J. Soil Sci. 93: 359–367. Soils of the Sumas watershed in the Lower Fraser Valley of British Columbia have contrasting P, Mg and trace elements contents arisin…
Hollow‐core (HC) optical microcavities differ from conventional ones in that they can strongly confine light in air. HC cavities simultaneously possessing high air–energy ratios (αair), high quality factors (Q), and small mode volumes (Veff) may enable on‐chip low‐concentration molecular sensing, high optical power de…
An analytical approach is introduced to analyze scattering and wave propagation in the problem involving a line source near an inhomogeneous chiral slab based on combination of Fourier transform and Taylor's series expansion. In this method, Taylor's series expansion is used for all electromagnetic parameters and Four…
In this paper we succeeded in deriving changes in the nodal positions of aberrations that belong to the fifth-order class in pupil dependence by applying a system level pupil decentration vector. Our treatment is specifically for rotationally symmetric multi-mirror optical designs that simply use an offset pupil as a…
El rapido desarrollo de la Nanotecnologia durante las ultimas decadas ofrece amplias perspectivas en el uso de materiales a micro- y nanoescala en diferentes areas de la industria, tecnologia y medicina. Sin embargo, su uso y aplicacion segura y eficaz en estas areas requieren un control mucho mayor sobre sus propieda…
The structure of the title centrosymmetric compound, [Zn(C₉H₆NO)₂(H₂O)₂], has already been solved three times [Merritt, Cady & Mundy (1954). Acta Cryst. 7, 473-476; Palenik (1964). Acta Cryst. 17, 696-700; Chen, Zhang, Shi, Huang, Liang & Zhou (2003). Acta Cryst. E59, m814-m815]. The authors of the two most recent pap…
The Hinsberg thiophene synthesis using 4,5,6,7-tetrahydro-4,7ethanothiophene-5,6-dione and diethyl thiodiglycolate afforded a mixture of diethyl 4,8-dihydro-4,8-ethanobenzo[1,2-c;4,5-c']dithiophene-1,3-dicarboxylate and its dihydrate, although the yields were low.The latter dihydrate was converted to the former dithio…