Materials Literature
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Abstract The three‐component reactions of aromatic aldehydes, amines and allyltributylstannane in water catalyzed by phosphomolybdic acid (PMA), underwent smoothly to afford the corresponding homoallylic amines in high yields at room temperature.
Ab initio calculations of the optimized geometry and the electronic structure of lattice defects in incipient perovskite ferroelectrics SrTiO3 and KTaO3 are performed in the framework of the density functional theory. The results are presented for the Li+ impurity ion at the A site in the KTaO3 and SrTiO3 ferroelectri…
The hydrophobicity of the lotus leaf is mainly due to its surface micro–nano composite structure. In order to mimic the lotus structure, ZnO micro–nano composite hydrophobic films were prepared via the three-step method. On thin buffer films of SiO 2 , which were first fabricated on glass substrates by the sol–gel dip…
Recent quasielastic electron scattering experiments on some molecular gases at E(e) > or = 1.8 keV have shown that the scattering is from single isotopes of the atomic components of the gas. The scattered electron lines at definite angles are Doppler broadened by the instantaneous kinetic energy (KE) of the scattering…
Abstract In this study, we demonstrated that vinylbenzyl chloride (VBC), a versatile monomer with reactive a chloromethyl group could be grafted onto a poly(tetrafluoroethylene‐ co ‐hexafluoropropylene) (FEP) film without a degradation of the chloromethyl group during a simultaneous irradiation process. The effects of…
Collagen hydroxyproline is an important posttranslational modification activity because of its close relationship with various diseases and signaling activities. However, there is no study to date for constructing models for predicting collagen hydroxyproline sites. Support vector machines with two kernel functions (t…
The new mineral meurigite-Na, [Na(H 2 O) 2.5 ][Fe 3+ 8 (PO 4 ) 6 (OH) 7 (H 2 O) 4 ], is monoclinic with space group C2/c and cell parameters a = 28.835(2), b = 5.1848(4), c = 19.484(1) Å, β = 106.983(6)°, V = 2785.8(2) Å 3 , and Z = 4. It is the Na analog of meurigite, which is now named meurigite-K. The type locality…
All milking machine equipment that come in contact with milk, dirt or manure must be thoroughly cleaned and sanitized before the next milking.
A biomaterial patch of electrospun collagen type fibers was designed and produced by electrospinning seven different concentrations (8%-20% w/v) of collagen solutions. The tensile strength, yield strength, and elastic modulus of the electrospun collagen fibrous patches were found to be suitable for clinical transplant…
This paper investigates the prospects of mixed bundle of carbon nanotubes (CNT) as low-power high-speed interconnects for future VLSI applications. The power dissipation and delay of CNT bundle interconnects are examined and compared with that of the Cu interconnects at the 32-nm technology node. We evaluated and comp…
Abstract A family of 36‐armed dendrimers containing six internal amino groups was synthesized and used to incorporate polyoxometalates (POMs) into their structures by ionic bonding. Allyl‐terminated dendrimer 17 (with oxidizable end groups) and methylphenyl‐terminated dendrimer 18 (with non‐oxidizable end groups) were…
A new class of nanosized metal–organic alloys (MORALs) has been synthesized for the first time. Silver nanoparticles doped with Cu(II) and Fe(III) phthalocyanines were thus synthesized in the presence of sodium dodecyl sulfate (SDS). The resulting materials were characterized by means of XRD, SEM, TEM coupled to energ…
Textured BiMnO 3 [111] thin films on SrTiO 3 (100) and Pt/TiO 2 /SiO 2 substrates were grown via r.f. magnetron sputtering (13.56 MHz). The XRD spectra confirmed a monoclinic structure and high-quality textured films for the BiMnO 3 films. The films grown on SrTiO 3 (100) showed higher crystalline quality than those d…
Abstract In general, causes for distortion phenomena during heat treatment e.g. are in general inhomogeneities or asymmetries of the distributions of mass, alloying elements, microstructure and residual stresses. Recently published papers with cylindrical shaped bearing rings clearly pointed out the influence of resid…
Narrow-band luminescence has been observed at the short-wavelength edge of the luminescence spectrum of polyethylene and polytetrafluoroethylene (Teflon), polymers in wide use today. The characteristics of this luminescence permit its assignment to the radiation emitted in recombination of ruptured C-C bonds of polyme…
Ceramics of PbZr1 − x Ti x O3 solid solutions were systematically studied in the range 0.37 ≤ x ≤ 0.57. The x-T phase diagram (T = 25°C) is constructed containing in single-phase regions isosymmetric states characterized by different concentration dependences of the structural and electrophysical parameters. There are…
Optimal conditions for condensation of equimolar ratios of stearic acid (St) and polyethylene glycol (PEG) 400, i.e. 180°C, 8hrs and H2SO4, 4g/kg (reactants mixture), were utilized to condensate the equimolar ratio of stearic (St), palmitic (Pa) or myristic (My) acid with PEG 300, 400, 600, 2000 or 6000. Each of the f…
In this paper, we evaluate the writing operation of multi-level phase change memory by using different programming techniques including proposed monotonically increasing and decreasing pulse, constant pulse, and slow quenching schemes. Our simulation results suggest that the proposed multi-level cell schemes not only…
Carbon nanotubes (CNTs) demonstrate great promise in a variety of applications such as structural polymers, super capacitors, batteries, sensors, and shielding. This is due to their unique electrical, mechanical, and thermal properties. Despite the desirable qualities commercially and in industry, little information e…
The result of the calculations of the electronic structure for Ba8Zn x Ge46 − x (x = 4, 6, 8) clathrates are presented. Band structures, total and partial electron densities of states in clathrates were obtained. The effect of the number of substituted atoms on the electron energy spectrum was considered. The lineariz…