Materials Literature
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The effect of boundary layer reactions on the conversion of char-N to NO, N 2 O, and HCN was studied by a coupled experimental/theoretical approach. In the experimental part, the evolution of HCN at conditions of a batch fluidized-bed reactor was studied. The results show that the char-N conversion to HCN is very low…
Arrhenius parameters, obtained with the blackbody infrared radiative dissociation technique, are reported for the dissociation of gaseous protonated complexes of a single-chain variable fragment (scFv) of the monoclonal antibody Se155-4 with structurally constrained trisaccharide ligands that resemble the bioactive co…
Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
The bulk diffusivity of dissolved carbon dioxide (CO 2 and CO 3 2- ) in NaAlSi 3 O 8 + nNa 2 O (n = 0- 6.87 wt%) and in NaAlSi 3 O 8 + nH 2 O (n = 0-2 wt%) melts was investigated at 1523 K and 0.5 GPa using the diffusion couple technique. CO 2 contents of the starting glass pairs varied between 0 and 0.2 wt%. Symmetri…
The present paper demonstrates that a nonstntggling slaughter method can delay degradation of type V collagen in meat of chub mackerel Scomber japonicus and softening of the meat during postharvest chilled storage. The fish were slaughtered by piercing a knife into nape (nonstruggling method) or by leaving on ground (…
We have used a numerical treatment to investigate time‐dependent phenomena associated with transient crystal nucleation in a model silicate melt. Our approach is the first to explicitly account for both thermodynamic (surface and bulk free energies) and kinetic (equilibrium and nonequilibrium transport) driving forces…
Icosahedral quasicrystalline material in the Al-Fe-Cu system was mechanically milled in an attritor ball mill (Szegvari attritor) for 1, 3, 6 and 10 h in dry air, at a speed of 400 rev min−1 and with a ball-to-powder ratio of 20 to 1. Structural transformations and the consequent phase evolutions during mechanical mil…
[reaction: see text] A novel type of tetrathiafulvalene-cage 4 containing three monopyrrolo-tetrathiafulvalene units has been prepared employing a general and efficient synthetic approach. X-ray crystal structure analysis revealed that the cage is able to accommodate solvent molecules within a cavity in the solid stat…
The thermal aging of PI rubber in hot air (140 °C) has been studied using the FT-IR imaging technique. From the analysis of the FT-IR images of the absorbance of the carbonyl (C=O) groups, it was found that the most significant thermal oxidation occurred at the surface of the rubber with a decreasing gradient of oxida…
The Waukesha Illite is an excellent example of the illites found in argillaceous rocks, typical for Paleozoic shales that have undergone significant burial diagenesis during their geologic history. It consists of a mixture of detrital 2M 1 , interpreted to be a residuum of karstification within Silurian carbonates, an…
The adsorption of carboxylic acids (formic, acetic, and pyruvic acid) from corresponding solutions in CH2Cl2 solvent on Al2O3 and TiO2 thin films has been studied by attenuated total reflection infrared spectroscopy. The metal-oxide films were vapor-deposited on a Ge internal reflection element, which was mounted into…
Major advances in understanding aerosol formation and growth allow now production of nanoparticles with closely controlled characteristics so that some of the early promises of nanotechnology are materialized. The production of flame-made titania particles coated in-situ with vanadia was brought from a microreactor (4…
Structures of symmetrical tilt grain boundaries and antiphase boundaries in β-silicon carbide are investigated by means of classical molecular dynamics simulations using the Tersoff potential. A structural unit model is used to classify the possible interface structures. Structures and energies are given for 〈001〉 til…
Abstract Antiferromagnetic phase transitions of M(N3)2(pm) were observed at 51, 39, 41, and 46 K for M = Mn, Fe, Co, and Ni, respectively; here pm denotes pyrimidine. Single-crystal X-ray crystallographic analysis for M = Mn, Fe, and Co and powder X-ray diffraction measurements for M = Ni revealed that they were isomo…
The features of the deformation bands (DBs) in copper single crystals under cyclic straining were surveyed. A simple model was proposed to account for the formation of DBs. In this model, both crystal rotation and dislocation density variation induced by cyclic straining were considered. The gradual lattice rotation c…
Intense ultraviolet and green room-temperature photoluminescence (PL) at 335, 370 and 500 nm was observed in C-doped silica synthesized by a sol–gel process using tetraethoxysilane as the precursor and glucose as the carbon source, followed by thermal treatment at temperatures from 400 to 900°C in air and ambient N 2…
A glass‐ceramic coating that protects a titanium alloy against oxidation during heat treatment has been successfully developed. In the present study, the conditions for preparing this glass‐ceramic coating were investigated. In addition, the prepared coating was characterized by X‐ray diffractometry, energy‐dispersive…
We present our effort in developing a complete model of electron energy transfer from fast electrons (0.1–100 keV) to the photoresist. Our model is based on the direct Monte Carlo method, instead of using continuous slowing down approximation, model and a stopping power curve. We separate the interaction events into f…
The electrical resistance of thin, 4–100 nm sputter-deposited (physical vapor deposition) Cu films was measured in situ in the deposition chamber. The Cu was deposited on silicon dioxide surfaces to reduce surface pinning or adhesion effects and allow high mobility. During, and following the deposition, the electrical…
An investigation was carried out of permanent polarization gratings recorded in films of polymer (elastomer) and azo dye written by two orthogonally circularly polarized Ar-ion laser beams. The films prepared were of two kinds, namely, a mixture of dye and polymer and a layered structure, i.e., a thin polymer film cov…