Materials Literature
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Blends consisting of polybenzoxazine and polyester with various weight ratios have been prepared by using a solution blending method. Thermal properties of the blends have been investigated by using thermogravimetric and differential scanning calorimetric analysis. Formation of hydrogen bonding was detected by using F…
Induction machine drive based on Direct Torque Control (DTC) allows high dynamic performance with very simple hysteresis control scheme. Conventional Direct Torque Control (CDTC) suffers from some drawbacks such as high current, flux and torque ripple, difficulties in torque as well as flux control at very low speed.…
Photochemistry is an essential tool in both the manufacturing and the use of modern cars. Radiation curing is used as a very efficient, economically and ecologically attractive technology for the coating and bonding of many of the parts used in a car, and avoiding degradation of the coating due to photoinduced process…
Various aspects of modified atmosphere packaging for storage of pears in perm-selective polymeric film packages were investigated. The dynamics of respiration-permeation interaction was analyzed with a view to facilitate self establishment of dynamic equilibrium of gaseous composition within the package and external a…
The effect of a foreign substance, silica (SiO 2 ), on the surface chemistry, chemical reactivity, and dispersibility of titania (TiO 2 ) nanoparticles was investigated. SiO 2 covers 90% of the surface of commercially available TiO 2 nanoparticles and provides higher acidity, which facilitates the absorption of alkali…
The stability of water-in-oil emulsions is controlled by several interfacial mechanisms that include the oil film rheology between approaching drops and the resistance to rupture of drop interfaces or a combination of these two interfacial controls. Film drainage is mainly a function of the continuous phase rheology.…
Ever decreasing magnetic spacing in the hard disk drive requires each contribution to the magnetic spacing to be examined for possible reduction. Currently, the lubricant layer on top of the disk carbon overcoat is typically 10-20 Å thick. This paper studies the contact resistance of nonlubricated disks with the aim o…
The electronic state of superconductor Rh 17 S 15 has been investigated by 103 Rh nuclear magnetic resonance (NMR) and specific heat measurements. We have identified the observed NMR lines corresponding to four inequivalent Rh sites in the cubic unit cell and obtained the site-selective information of each site. The s…
In this paper we present the experimental results of the loss of the high temperature superconducting (HTS) tape in AC and DC mixed electro-magnetic condition. The DC magnetic field is not of concern, because its influence parallels the critical current variation. The electro-magnetic environment consists of the DC of…
We report on an original technique for nanoengineered pinning centers that combine three previously reported approaches: substrate decoration, quasi-multilayers and targets with secondary phase nanoinclusions. We have used a 4% BZO-doped YBCO target, and Ag nanodots, all grown by PLD. Such an approach gave interesting…
Macroporous TiO 2 films have been prepared by sol–gel method without any surfactant and colloidal templates where the gel TiO 2 films deposited from the precursor solutions containing photomonomer were irradiated by the UV light for some time. The UV irradiation could induce the monomer to polymerize, which resulted i…
The dependence of the properties of mixed ligand [Ni(II)(2)L(μ-O(2)CR)](+) complexes (where L(2-) represents a 24-membered macrocyclic hexaamine-dithiophenolato ligand) on the basicity of the carboxylato coligands has been examined. For this purpose 19 different [Ni(II)(2)L(μ-O(2)CR)](+) complexes (2-20) incorporating…
Steel tubes are used in the heat exchanger in the petrochemical plant or the steam generator in the fast breeder reactor. Since these steel tubes in the heat exchanger or steam generator are stored as a bundle by the support steel plate (baffle), it is necessary to inspect the existence of defects from the inside of e…
We developed a non-destructive and contactless system for measuring the critical current (Ic) in YBa2Cu3O7-δ(YBCO)-coated conductors by using a permanent magnet (Sm2Co17). This Icmeasurement method is based on the repulsive force (Fr) between the magnet and the shielding current in high-temperature superconductor-coat…
We report the microelectromechanical systems (MEMS)-enabled mechanically tunable negative-index photonic crystal lens, which was comprised of 2-D photonic crystal and symmetrical electro-thermal actuators. The 2-D photonic crystal was made of a honeycomb lattice of silicon rods embedded in an SU-8 membrane. A silicon…
Understanding nonnative protein aggregation is critical not only to a number of amyloidosis disorders but also for the development of effective and safe biopharmaceuticals. In a series of previous studies [Weiss et al. (2007) Biophys. J. 93, 4392-4403; Andrews et al. (2007) Biochemistry 46, 7558-7571; Andrews et al. (…
Abstract A novel siloxane‐imide‐containing polybenzoxazine based on N,N′‐bis(N‐phenyl‐3,4‐dihydro‐2H‐benzo[1,3]oxazine)‐5, 5′‐bis(1,1′,3,3′‐tetramethyldisiloxane‐1,3‐diyl)‐bis(norborane‐2,3‐dicarboximide) (BZ‐A1) was successfully synthesized. The thermal properties of BZ‐A1 are superior to those of conventional polybe…
High-temperature syntheses of the new C(60)(i-C(3)F(7))(2,4,6) and C(70)(i-C(3)F(7))(2,4) isomers and their characterization by spectroscopic methods, X-ray crystallography, cyclic voltammetry and density functional theory provide compelling evidence that they are superior electron acceptors than trifluoromethylfuller…
Extremely long nanofibers, whose lengths reach the millimeter regime, are generated via co-aggregation of a melamine-appended perylene bisimide semiconductor and a substituted cyanurate, both of which are ditopic triple-hydrogen-bonding building blocks; they co-aggregate in an unexpected stoichiometrically mismatched…
pH-sensitive carboxymethyl cellulose hydrogel beads were prepared in spherical form by a suspension-crosslinking technique with epichlorohydrin as a crosslinking agent and fluid wax as the suspending solvent. The hydrogel beads are spherical in shape with a diameter of about 4 mm, which exhibits reversible pH-sensitiv…