Materials Literature
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Recent research on fouling where composite fouling in aqueous media may be present is reviewed. In practical industrial applications, usually several types of fouling occur simultaneously; however, due to the complexity of fouling, various types of fouling are studied in isolation. Crystallization (precipitation) foul…
Polydextrose (Litesse) provides physiological effects consistent with dietary fiber. However, AOAC methods for measuring total dietary fiber (TDF) in foods include an ethanol precipitation step in which polydextrose and similar carbohydrates are discarded and therefore not quantitated. This study describes a method de…
Beam-shaping diffractive optical elements give a desired intensity distribution in the diffraction plane over areas much larger than the diffraction limited spot size. Such elements can be designed using geometrical optics methods or iterative-Fourier-transform algorithms (IFTAs). The usefulness of geometrical optics…
Single Al-Pd-Re icosahedral quasicrystals with a maximum diameter of 5mm have been grown by a slow cooling method on the basis of a partial phase diagram determined in the present study. Laue X-ray and electron diffraction verified the highly ordered structure of the single icosahedral quasicrystals. The electrical re…
The reactions of maleic anhydride (MA) have been investigated on the “near” stoichiometric and substoichiometric surfaces of TiO2 by temperature programmed desorption (TPD). Moreover, self-consistent field semiempirical PM3 calculations of MA over relaxed and unrelaxed Ti13O45H38 rutile clusters [simulating the rutile…
The single-crystal X-ray technique was used to calibrate a new intracrystalline geothermometer based on equilibrium Mg-Fe* fractionation (Fe* = Fe 2+ + Mn 2+ ) between M1 and M2 sites of natural P2 1 /c pigeonite. Suitable crystals free of exsolution textures and sharp diffraction maxima were selected by careful TEM a…
Silicon is the “veteran” semiconductor in the management of electrons. The recent quest for optoelectronic and photonic materials suggests that new architectures of silicon structured over multiple length scales may still be the optimum material for the transition from electron-based to photon-basped computers and com…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSynthesis and Characterization of Linear−Dendritic Aromatic Etherimide Copolymers: Tuning Molecular Architecture To Optimize Properties and ProcessabilityLarry J. Markoski, Julie L. Thompson, and Jeffrey S. MooreView Author Informat…
The structure of a dispersion of monodispersed, plate-shaped colloidal particles has been investigated under shear. The dispersion displays a columnar phase when at rest, and if subjected to shear at low rates (0.1-1 s(-1)), this structure aligns with the axis of the columns in the flow direction. At low shear rates,…
The aim of this research is to construct an appropriate back-propagation neural network topology to automatically recognize neps and trash in a web by color image processing. After studying the ideal background color under moderate conditions of brightness and contrast to overcome the translucent problem of fibers in…
The equilibrium speciation of the quaternary system H+/MoO42−/HVO42−/HPO42− in aqueous 0.600 M Na(Cl) at 25 °C and 90 °C was studied by pH potentiometry and 31P (202.5 MHz) and 51V (131.6 MHz) NMR spectrometry. The study focused on solutions containing the oxoanion components in the ratios (Mo + V)/P = 12:1 and Mo/V ⩾…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Alejandro D. Rey; Theory of linear viscoelasticity of cholesteric liquid crystals. J. Rheol. 1 Ju…
RATIONALE AND OBJECTIVES: The objective of the two pivotal phase 3 studies was to evaluate the safety and efficacy of OptiMARK (Gd-DTPA-bis(methoxyethylamide) [Gd-DTPA-BMEA]) compared with Magnevist (Gd-DTPA) in magnetic resonance imaging of the central nervous system. METHODS: Two multicenter, randomized, double-blin…
Abstract Peroxide initiated vinylsilane grafting of polypropylene in an intensive mixer, and the subsequent water crosslinking process were studied. Different concentrations of vinyl trimethoxysilane and dicumyl peroxide were used. The materials obtained after mixing in the rheocord were hot pressed at 190°C. The melt…
The high-temperature transformation of andalusite (Al 2 O 3 ·SiO 2 = A) single crystal to 3:2-mullite (3Al 2 O 3 ·2SiO 2 = M) and non-crystalline silica (SiO 2 ) taking place between 1500 and 1600 °C was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Electron diffraction…
The dielectric properties of (Ba 0.6 Sr 0.4 )TiO 3 and Al 2 O 3 ‐doped (Ba 0.6 Sr 0.4 )TiO 3 have been characterized. The grain size of the specimen is maximum for (Ba 0.6 Sr 0.4 )TiO 3 that has been doped with 1 wt% Al 2 O 3 . The density and the real part of the relative dielectric constant each decrease as the Al 2…
This paper deals with the computation of the magnetic field and core losses in a squirrel-cage induction motor. The computational algorithm consists of the vector Preisach model incorporated in two-dimensional time-stepping finite element analysis. The hysteretic nonlinearity is handled by the fixed-point iterative te…
In this work, the magnetization dynamics of soft magnetic materials is studied with the aid of transverse differential permeability μ(Iac,f,Hdc) spectra. Contributions to the magnetization processes from domain wall motion and rotation of the magnetization can be extracted from the transverse differential permeability…
Dislocation mechanisms responsible for mechanical properties of nanoscaled multilayers are studied using the example of heavily drawn pearlitic steel wires. Two specific types of dislocation source are observed during transmission electron microscopy in situ straining experiments: one dislocation source operates at wi…
The analysis of the scattering intensity I0 (q) (q = (4 π/λ) sin (θ/2); λ: wavelength of radiation; θ: scattering angle) of dissolved linear polymers derived from static scattering experiments is considered. The determination of I0 (q) and possible sources of experimental uncertainties are discussed in detail. Moreove…