Well-ordered 2-D polyaniline (PAni) honeycomb films were produced by electropolymerization of aniline within the interstitial voids in assemblies of polystyrene (PS) nanospheres precoated with poly(diallyldimethylammonium chloride) and poly(sodium 4-styrenesulfonate) (PDADMAC/PSS) thin shells, followed by the extraction of the PS cores with toluene. Depositing polyelectrolyte (PE) layers onto t...

BACKGROUND AND AIMS The gastroprokinetic activities of ghrelin, the natural ligand of the growth hormone secretagogue receptor (GHS-R), prompted us to compare the effect of ghrelin with that of synthetic peptide (growth hormone releasing peptide 6 (GHRP-6)) and non-peptide (capromorelin) GHS-R agonists both in vivo and in vitro. METHODS In vivo, the dose dependent effects (1-150 nmol/kg) of g...

In this article we study the spectral properties of the Schrödinger operator HV “ ́Δ ` V pxq, x P R, where the potential, V , is periodic and has honeycomb structure symmetry. For general periodic potentials the spectrum of HV , considered as an operator on LpRq, is the union of closed intervals of continuous spectrum called the spectral bands. Associated with each spectral band are a band dispe...

– the normal and lateral line cycloid scales of a cyprinid fish capoeta damascina (valenciennes incuvier and valenciennes, 1842) have been subjected to the scanning electron microscopy technique in orderto study their detailed structure. the scales have the general morphological characteristics of the cycloidscales. in the normal scale located below the dorsal fin, the focus lies towards the an...

In their study published in this issue, Iglesias et al. give the vascular effects, independent of GH release, has been first evidence that ghrelin is synthesized and secreted by cardiomyocytes. Ghrelin is a 28-amino acid peptide containing an n-octanoyl modification at serine 3. It acts on the pituitary and hypothalamus to stimulate growth hormone (GH) release, food intake, and adiposity. It ha...

Two-dimensional supramolecular honeycomb networks with cavities of an internal diameter of 2.95 nm were formed by the self-assembly of 4,4',4' '-benzene-1,3,5-triyl-tribenzoic acid (BTA) on a Ag(111) surface at room temperature. Annealing to higher temperatures resulted in two sequential phase transformations into closer-packed supramolecular arrangements. The phase transformations are associat...

Li2MnO3 with a S = 3/2 two-dimensional Mn honeycomb lattice has a Neel-type antiferromagnetic transition at TN = 36 K with a broad maximum in magnetic susceptibility at TM = 48 K. We have investigated site percolation effects by replacing Mn with nonmagnetic Ti, and completed a full phase diagram of Li2Mn1-xTixO3 solid solution systems to find that antiferromagnetic transition is continuously s...