Materials Literature
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We present the concept of principal sections of a lightpipe to analyze the propagation of light through the lightpipe by total internal reflection. Only the principal sections determine the acceptance angle and thus help in the identification of regions where the leakage occurs first. Use of principal sections for ana…
ABSTRACT: Whey protein isolate (5% w/v) films were plasticized with sorbitol or glycerol, and candelilla wax (0.8% w/ v) was added to produce whey protein isolate and candelilla wax emulsion edible films. The films were cut into 7.62 cm × 2.54 cm strips and evaluated by a 15‐member trained sensory panel for milk odor,…
Ferroelectric properties of thin film materials like lead zirconate titanate differ from those observed for bulk material. It is well known that the surface can strongly influence phase transition phenomena. By the use of a thermodynamical approach, very similar to those generally used to describe phase transitions, w…
Dispersions of wheat gluten were prepared at different pHs (4, 6 and 11) in the presence or absence of ethanol. Films were obtained after casting suspensions followed by evaporation of the solvent. Films prepared at pH 11 were significantly stronger than the films prepared at pH 4 and 6 with tensile strengths of appro…
SUMMARY: The DBAli database includes approximately 35000 alignments of pairs of protein structures from SCOP (Lo Conte et al., Nucleic Acids Res., 28, 257-259, 2000) and CE (Shindyalov and Bourne, Protein Eng., 11, 739-747, 1998). DBAli is linked to several resources, including Compare3D (Shindyalov and Bourne, http:/…
Polycrystalline diamond thick films were subjected to annealing in vacuum at temperatures of 1350–1450 °C. The films were examined by optical absorption, Raman spectroscopy, transmission electron microscopy and electron energy loss spectroscopy. The formation of amorphous carbon and/or of well-crystallized graphite la…
summary: We describe an extension to the Homologous Structure Alignment Database (HOMSTRAD; Mizuguchi et al., Protein Sci., 7, 2469-2471, 1998a) to include homologous sequences derived from the protein families database Pfam (Bateman et al., Nucleic Acids Res., 28, 263-266, 2000). HOMSTRAD is integrated with the serve…
Abstract The conditions of processing and gas sensing of polyaniline (PANi) blends with polyvinyl acetate (PVAc), polystyrene (PS) and polyvinyl chloride (PVC) were investigated. Flexible, free‐standing and stretchable films of various blends compositions were obtained by casting. The mechanisms of the conducting ble…
Homogeneous and nanosized (28 nm crystallite size) doped‐ZnO ceramic powders were obtained by a metallorganic polymeric method. Calcining and granulating resulted in green compacts with uniform powder packing and a narrow pore‐size distribution (pore size 19 nm). Dense ceramic bodies (>99% of theoretical) were fabr…
Pb(Zr, Ti)O 3 (PZT) thin films with (100) preferred orientation were prepared using metalorganic chemical vapor deposition on LaNiO3 (LNO) buffered platinized Si with thickness varying from 25–100 nm. The dependence of electrical properties of PZT films on thickness was studied using several techniques, including pola…
Abstract An extension has been made of previous analyses of peak area intensities for elemental spectra in digital Auger and x‐ray photoelectron databases. The intensities, instead of being analysed after removal of a background derived from the Tougaard Universal cross‐section, are now analysed after removal of the e…
The photophysical properties of two perylene−porphyrin dyads have been examined in detail with the aim of expanding the functional utility of these constructs for molecular optoelectronics applications. The dyads consist of a perylene-bis(imide) dye (PDI) connected to either a magnesium porphyrin (Mg) or a free base p…
A series of optically tunable amphiphilic conjugated polymers, poly(2-hydroxy-5-alkoxy- p -phenylene) ( 1 ) containing long alkyl chains, were prepared by Suzuki polycondensation using 2,5-dibromo-1-benzyloxy-4-alkoxybenzene and bis(boronic ester) monomers. All polymers showed good solubility in common organic solvent…
RATIONALE AND OBJECTIVES: To summarize the physicochemical characterization, pharmacokinetic behavior, and biological evaluation of P792, a new monogadolinated MRI blood-pool agent. METHODS: The molecular modeling of P792 was described. The r1 relaxivity properties of P792 were measured in water and 4% human serum alb…
Abstract Many attempts have been made to improve the fracture toughness of brittle materials such as ceramics. Most of the methods developed so far make use of metallurgical processes, for example, phase transformation, refining of grains, formation of composite materials. However, these methods can not be applied uni…
Abstract Raman spectra of LiK 0.8 (NH 4 ) 0.2 SO 4 were obtained as a function of applied pressure. The measurements were carried out using a microscope to focus the light into a spot size of 2 µm, in order to avoid probing a multi‐domain sample. With increasing pressure, many of the Raman peaks are shifted towards hi…
Abstract The pitting corrosion behaviour of the austenitic stainless steel alloys 31 and A 351 with different surface treatments in a technical MgCl 2 solution was investigated. Potentiometric current density-potential measurements were carried out, and critical repassivation temperatures were determined, using a galv…
In cases of certain accelerated sulfur vulcanizing systems, the curemeter traces do not run the usual way but consist of two more or less distinct plateaus. The shape of the cure curves was newly evaluated based on cure curve derivation. The latter provides the possibility of distinguishing the inflection points even…
The search for the hexatic phases such as smectic-F and G in N-(p-n-alkoxybenzylidene)-p-n-alkyl anilines, nO.m s series has revealed that a number of higher homologues of this series exhibit a direct isotropic liquid to hexatic smectic-F and G phases in addition to the lone compound hither to known in nO.m series viz…
The results of experimental observations of a carrier charge transfer and influence them on electrooptical response NLC with Δ∈>0 are given. Main investigations have been carried out with samples with distance between electrodes 3000 and 260 μm. Ions with known parameters (copper Cu+) were injected. It has been shown…