Materials Literature
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Ewald's method yields internal electric fields in a polar material consisting of local and macroscopic components. The macroscopic component is a priori undefined. It depends on the boundary conditions imposed at the surface of the macroscopic medium. The boundary conditions ordinarily used in periodic electronic-stru…
The effects of temperature and time on the grain growth kinetics of selected steels have been experimentally determined. The steels examined are 1045, 4140, 4340, 8620, 9310 and 52100. Samples were heat treated at temperatures ranging from 850C to 1050C in increments of 50C and held for 30 minutes, 2, 4, and 9 hours.…
UNLABELLED: PKSIIIexplorer, a web server based on 'transductive Support Vector Machine' allows fast and reliable prediction of Type III polyketide synthase proteins. It provides a simple unique platform to identify the probability of a particular sequence, being a type III polyketide synthases or not with moderately h…
Density functional theory has been used to investigate the adsorption of sulfur atoms in the (√7 × √7) R 19.1° unit cell of Ag(111). For the coverages θ = 1/7 and 2/7 the S atoms adsorb at fcc and hcp hollow sites with negligible reconstruction of the surface. For θ = 3/7 a large surface reconstruction occurs. The thr…
We present luminescence spectroscopy measurements of in situ Nd doped AlN grown by plasma-assisted molecular beam epitaxy. A Nd concentration as high as 0.08 at. % is incorporated into the host material. The Nd incorporation efficiency within the AlN matrix is found to be highly sensitive to the Al flux but independen…
The title Co(II) complex, [Co(C(9)H(9)O(2))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], contains two 4-ethyl-benzoate (PEB), two monodentate diethyl-nicotinamide (DENA) ligands and two water mol-ecules. The four O atoms in the equatorial plane around the Co(II) ion form a slightly distorted square-planar arrangement, while the…
S.101-107
Knowledge of the gap function is important to understand the pairing mechanism for high-temperature (T(c)) superconductivity. However, Fourier transform scanning tunneling spectroscopy (FT STS) and angle-resolved photoemission spectroscopy (ARPES) in the cuprates have reported contradictory gap functions, with FT-STS…
Cell migration relies on traction forces in order to propel a cell. Several computational models have been developed that help explain the trajectory that cells take during migration, but little attention has been placed on traction forces during this process. Here, we investigated the spatiotemporal dynamics of cell…
We propose three dimensionless approximate expressions to predict the thickness filling factor, gap center, and gap width of the maximum omnidirectional gap (MODG) for various refractive indices in one-dimensional photonic crystals. These expressions are simple and do not include trigonometric or inverse trigonometric…
Results are presented on the photosensitivity behavior of a phosphate glass optical fibre using 248nm, 500fs laser radiation. Bragg grating exposures performed using a double phase mask interferometer and peak intensities of 0.37TW/cm2, revealed that grating growth becomes non-monotonic in terms of average and modulat…
The Japanese mealybug, Planococcus kraunhiae, is suitable as a model insect for biosynthetic studies on mealybug pigments. Four yellow pigments, including two novel ones, were isolated from the mealybug bodies and characterized as endocrocin, a dicarboxylic acid named fujikonaic acid (1), emodin 1-O-β-D-glucopyranosid…
The objects of this study are only radioactive consumer products added NORM (NRCP). In Japanese current markets, many NRCP are sold claiming some effects like hormesis. The existence of NRCP in the living environments here may raise the radiation exposure dose of the user. The activity concentrations in many kinds of…
BACKGROUND: MenH (2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate synthase) is a key enzyme in the biosynthesis of menaquinone, catalyzing an unusual 2,5-elimination of pyruvate from 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexadiene-1-carboxylate. RESULTS: The crystal structure of Staphylococcus aureus MenH ha…
Ni-substitution effects on the superconductivity and Cu-spin correlation have been investigated in La${}_{2\ensuremath{-}x}$Sr${}_{x}$Cu${}_{1\ensuremath{-}y}$Ni${}_{y}$O${}_{4}$ from the electrical resistivity and muon spin relaxation measurements, taking into account the hole trapping by Ni recently suggested. It ha…
This paper reviews the work of my group over the last 20 years on the role of chirality in second-order nonlinear optics of molecular systems and new developments linking my research to magneto-optics and organic magnetism.
Microtopography is one of several strategies used by marine organisms to inhibit colonization by fouling organisms. While replicates of natural microtextures discourage settlement, details of larval interactions with the structured surfaces remain scarce. Close-range microscopy was used to quantify the exploration of…
The scission kinetics of bottle-brush molecules in solution and on an adhesive substrate is modeled by means of molecular dynamics simulation with Langevin thermostat. Our macromolecules comprise a long flexible polymer backbone with L segments, consisting of breakable bonds, along with two side chains of length N, te…
A systematic radiological survey has been carried out in the region of high-background radiation area in Kollam district of Kerala to define the natural gamma-radiation levels. One hundred and forty seven soil samples from high-background radiation areas and five samples from normal background region were collected as…
Abstract In this article, we show that the −10 dB reflectivity bandwidth of a Salisbury screen operating at normal incidence is increased by 56% when a lossy spiral shaped frequency selective surface is inserted between the outermost 377 Ω per square resistive sheet and the ground plane. Moreover, this structure exhib…