Materials Literature
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Anomalous forms of Bacillus subtilis A32 produced by prolonged cultivation in a chemostat under nitrogen limitation are described. A change in the cultivation conditions brought about a transformation of these forms to bacillar rods. The transformation was gradual and lasted for several generations.
Ce travail présente les avancées en instrumentation nucléaire pour les domaines liées à l'industrie du cycle du combustible, à l'industrie des systèmes électrogènes nucléaires et aux domaines de la sécurité du travailleur (dosimétrie) mais aussi de la sécurité dans le cadre du "homeland security act"1. Dans une premiè…
A numerical approach is presented to analyze the two-dimensional scattering properties from a multilayered periodic dielectric structure of an arbitrary number of arbitrarily shaped unit cells. The approach is enhanced by the periodic moment method, the lattice sums technique, and the Poisson summation formula. The ma…
Thin films that have high transparency and conductivity are used in various applications such as displays, solar cells, electrochromic devices and heatable glasses (Granqvist and Hultåker, 2002;1-5). This present work describes the deposition of transparent and conductive In2O3 films using a pulsed d.c magnetron sputt…
We propose a method for nano-scale characterization of long range magnetic order in diluted magnetic systems to clarify the origins of the room temperature ferromagnetism. The GaN:Mn thin films are grown by metal-organic chemical vapor deposition with the concentration of Ga-substitutional Mn up to 3.8%. Atomic force…
In this Comment I argue that Silveirinha's criticism of my earlier work [M.G.Silveirinha, Phys.Rev.B 80, 235120 2009)] is based on an unphysical excitation model which involves an "external current" which overlaps with a continuous medium but is not subject to constitutive relations. When this excitation model is repl…
Nanofluids are suspensions of nanoparticles and fibers which have recently attracted much attention due to their superior thermal properties. Here, nanofluids are studied in the sense of nanofins transversally attached to a surface, so that dispersion within a fluid is mainly dictated by design and manufacturing proce…
We investigate the effects of spin-flip scattering on the Hall transport and spectral properties of massive Dirac fermions. We find that in the weak scattering regime, the Berry curvature distribution is dramatically compressed in the electronic energy spectrum, becoming singular at band edges. As a result the Hall co…
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.
Diferentes nanoestruturas de Zn metalico foram preparadas em um forno tubular horizontal a partir de uma nova rota carbotermica, a qual envolveu a reducao de ZnO por diferentes fontes de carbono nao convencionais, tais como: piche de alcatrao de Eucaliptus sp (piche vegetal), piche de petroleo, celulose, licor negro,…
In the past two decades polymer/clay nanocomposites (PCNs) have emerged as promising materials that exhibit remarkably improved properties when compared to conventional composites and pristine polymers. Such improvements strongly depend on the dispersion of clay nanoparticles in the polymer matrix. In spite of great e…
Using a full dispersion description of phonons, the thermal conductivities of bulk Si and Bi2Te3 are evaluated using a Landauer approach and related to the conventional approach based on the Boltzmann transport equation. A procedure to extract a well-defined average phonon mean-free-path from the measured thermal cond…
Received 21 October 2010DOI:https://doi.org/10.1103/PhysRevB.82.199901©2010 American Physical Society
Background: Many inducible transcription factors are regulated through batteries of posttranslational modifications that couple their activity to inducing stimuli. We have studied such regulation of Heat Shock Factor 1 (HSF1), a key protein in control of the heat shock response, and a participant in carcinogenisis, ne…
The ability to protect refined metals from reactive environments is vital to many industrial and academic applications. Current solutions, however, typically introduce several negative effects, including increased thickness and changes in the metal physical properties. In this paper, we demonstrate for the first time…
The gold nanoparticles (AuNPs) functionalized with the gadolinium (Gd(III))-diethylenetriamine pentaacetic acid (DTPA) conjugate of cysteine, abbreviated as Au@GdL, are a magnetic resonance imaging (MRI)/computed tomography (CT) dual-imaging agent synthesized by Park et al. for MRI/CT multimodality imaging of tumors (…
Abstract The title unsubstituted (normal) (E)-2-hydroxyimino-2-cyanoacetic acid ethyl ester (the abbreviated name: (E)-2-cyanoethyl ester-2-oxime or 2-oxime) and its 2-deuterated analogue have been prepared and characterized using infrared, Raman and inelastic, incoherent neutron scattering (IINS) spectroscopy. Molecu…
We have studied aging in laser ablated 2 wt% BaZrO3doped GdBaCuO (GdBCO) thin films. The films were coated with gold, silver, copper, photoresist and stycast. One film was left without coating for reference. The superconducting and structural properties were followed for several months. The critical temperatureTcand c…
A theoretical treatment of the two-dimensional exchange nuclear quadrupole resonance pulse sequence is presented and applied to the quantitative study of exchange processes in molecular crystals. The theory is successfully tested for the exchange spectra of hindered trichloromethyl groups of p-chlorobenzotrichloride,…
The structure of the β- and β′-phases of Mg2Al3 metallic compound is described in terms of rod-like domains consisting of periodic sets of hexagonal layers. The coherent joining of the neighbouring domains is discussed. The main set of 11 layers forms a stable configuration, which does not change during the β′–β trans…