Materials Literature
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Abstract Titanites rich in antimony (up to 12.59 wt.% Sb 2 O 5 ; equal to 0.165 Sb 5+ per Si 4+ = 1.000) arc described for the first time. They coexist with various greenschist-facies minerals in three different petrographical environments in the manganese concentrations at St. Marcel-Praborna in the Aosta Valley, Ita…
Abstract The resin transfer molding (RTM) technique often utilizes reinforcement with a complex fiber architecture. Several parameters, including the permeability tensor, are necessary to characterize the flow behavior in these intricate fibrous porous media. In this paper, a general procedure for extracting three‐dim…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation and Stability of Ni(I) Ions in MCM-41 Mesoporous Molecular SievesMartin Hartmann, Andreas Poppl, and Larry KevanCite this: J. Phys. Chem. 1995, 99, 49, 17494–17496Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Published iniss…
A major field of neural networks (NN) application is function estimation, because the useful properties of NN such as adaptivity and nonlinearity are well suited to function estimation tasks where the equation describing the function is unknown. In this paper the prerequisite trainiing data are obtained from experimen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-Organization of Polymethine Dyes in Thin Solid LayersLars DaehneCite this: J. Am. Chem. Soc. 1995, 117, 51, 12855–12860Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Published inissue 1 December 1995https://doi.org/10.1021/ja00156…
Development of tensorial constitutive equations suitable to model the thermomechanical behaviour of shape memory alloys (SMA) would greatly help engineering design of sophisticated components. While a number of studies have focused on mechanical behaviour under tensile loading, only a few have been done to characteris…
Abstract The surface science of oxides has received considerably less attention than the study of metal surfaces. We review some of our work on structural characterization and electronic structure investigations on oxide surfaces which we prepare as thin oxide films on metallic substrates. This preparation method lead…
When in a powder diffraction pattern two or more peaks heavily overlap, the integrated intensities of the overlapping reflections are correlated. This paper describes a method, based on the study of the peak overlap, which estimates the number of statistically independent intensities associated with a powder diagram.…
Abstract Thin films of poly(styrene‐ block ‐methyl methacrylate) diblock copolymer [P(St‐ b ‐MMA)] with thickness ca. 50 nm were prepared by a dip‐coating method. The surface T g for the P(St‐ b ‐MMA) thin film was evaluated on the basis of the temperature‐dependent X‐ray photoelectron spectroscopic (TDXPS) measuremen…
In order to diminish the overpotential required for the electrochemical reduction of CO 2 , a metal complex‐fixed polyaniline (PAn)/prussian blue (PB)‐modified electrode has been developed, and the roles of the two laminated films as well as a fixed metal complex are disclosed here. The onset potential for the reducti…
Due to the inherent complexity of the general Lifshitz theory, the Hamaker–De Boer approach is still used in computing the van der Waals attractive force in systems with macrobodies of complex shapes. To account for the retardation of force computed by this approach, the London equation has in the past been modified b…
A computer code with the capability of simultaneously estimating the concentrations of radiolysis species, the electrochemical corrosion potential, and the kinetics of growth of a reference crack in sensitized Type 304 stainless steel is developed for the heat transport circuits of boiling water reactors (BWRs). The p…
Abstract Samples of highly syndiotactic poly(propylene) (s‐PP) crystallized in a C‐pseudo‐centered orthorhombic form are here characterized through high resolution solid state 13 C NMR sepctroscopy and wide angle X‐ray diffraction. The 13 C NMR CP MAS (cross‐polarization, magic angle spinning) spectra of highly disord…
Amorphous zirconia gel was hydrothermally treated at 250°C for 1–326 h in water and in NaOH water solution. Changes of the crystallite sizes and shapes were observed using TEM. The nature of these changes seems to be independent of the crystallization environment, but the rate of the process is much faster in the NaOH…
The interaction between partial discharge (PD) phenomena occurring in insulating systems is investigated in this paper. In particular, the recognition of two PD phenomena simultaneously active is approached by means of a 5-parameter additive Weibull distribution. Various shapes of the PD height distribution, obtained…
Time-dependent hydrodynamic interactions in a colloidal suspension of hard spheres are studied, both experimentally and through computer simulation. The focus is on the behavior at small wave vectors, which directly probes the temporal evolution of hydrodynamic interactions between nearby particles. The computer simul…
High-pressure fluorescence line narrowing (HPFLN) has been used to characterize the local structure of ${\mathrm{Eu}}^{3+}$ ions in sodium disilicate glass up to 210 kbar. HPFLN spectra, measured at 77 K, were analyzed using crystal-field theory. As pressure was increased from ambient to approximately 40 kbar, a redsh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCocrystallization and Phase Segregation of Polyethylene Blends between the D and H Species. 7. Time-Resolved Synchrotron-Source Small-Angle X-ray Scattering Measurements for Studying the Isothermal Crystallization Kinetics: Comparison with the FTIR DataKohji Tashiro, Kouji I…
Calystegines are nortropane alkaloids with glycosidase inhibitor activity. They were found in different plant organs vary remarkably.
The direct crystal-to-glass transformation, i.e., spontaneous amorphization, which was first observed by thermal annealing of stishovite ${\mathrm{SiO}}_{2}$ at ambient pressure, has now been observed as an isothermal phenomenon during both compression and decompression of initially stable crystals. While counterintui…