Titanium dioxide nanoparticles (TiO2-NPs,
† Background and Aims: Gloxinia (Sinningia speciosa) is a popular commercial plant for its attractive and colourful flowers. However, the genetic mechanism of flowering time regulation in gloxinia is largely unknown. Recent studies on model plants have elucidated that miR159 acts as a negative regulator of floral transition in short-day photoperiods. The aim of this study was to investigate…
Adolescents experience various forms of strain in their lives that may contribute jointly to their engagement in cyber aggression. However, little attention has been given to this idea. To address this gap in the literature, the present longitudinal study examined the moderating influence of peer rejection on the relationship between cyber victimization at Time 1 (T1) and subsequent cyber aggr…
Abstract. A promising supercapacitor material based on graphene/polypyrrole (PPy) has been successfully synthesized via in situ oxidation polymerization of pyrrole monomers in aqueous graphene oxide (GO) solutions, followed by chemical reduction using ethylene glycol (EG). Unlike the commonly employed hydrazine reduction, the moderate EG reductant does not destruct the PPy conjugative struc…
Abstract. A promising supercapacitor material based on graphene/polypyrrole (PPy) has been successfully synthesized via in situ oxidation polymerization of pyrrole monomers in aqueous graphene oxide (GO) solutions, followed by chemical reduction using ethylene glycol (EG). Unlike the commonly employed hydrazine reduction, the moderate EG reductant does not destruct the PPy conjugative struc…
Abstract The transesterification of dimethyl oxalate (DMO) with phenol is studied on various Ti-containing phosphate (Ti-P-O) catalysts. The weak acid-base characteristics of Ti-P-O catalysts are responsible for the high activity and selectivity to methyl phenyl oxalate (MPO) and diphenyl oxalate (DPO). Keywords: Transesterification, dimethyl oxalate, methylphenyl oxalate, diphenyl oxalate
Abstract. An oxalic acid-assisted hydrothermal deposition method to prepare highly dispersed W/γ -Al2O3 and NiW/γ -Al2O3 hydrodesulfurization catalysts without strengthening the metal–support interaction was developed and compared with the conventional impregnation method. The resulting oxidic and sulfided catalysts were characterized, and their catalytic performance was assessed. The r…
Abstract. The interactions between negatively charged diblock polyelectrolyte PDMA71-b-PAA59 and oppositely charged gemini surfactant hexylene-1,6-bis(dodecyldimethylammonium bromide) (12-6-12) in basic media were studied using dynamic light scattering, fluorescence spectroscopy, surface tension, and 1H NMR. With increased addition of surfactant, the conformation of polyelectrolyte experien…
Abstract. For the first time, the interaction of casein micelle (CM) with gold nanoparticles (GNPs) was studied using TEM, UV–visible, FTIR and fluorescence spectroscopy methods. The results show that GNPs bind to CM surface, leading to the formation of GNP–CM conjugates. GNPs exhibit similar particle diameters, and the CM structure is retained in GNP–CM conjugates. Furthermore, GNP�…
Abstract. The effects of substrate rotation speed and rotation mode on the microstructure of large-sized metal sheet fabricated by electron beam physical vapor deposition technique were investigated. Helical and columnar microstructures were found in the deposited sheet. Both types of microstructures exhibit no preferential crystallographic orientation. The column inclination under asymmetr…
Recent developments in solid-state NMR techniques helped acquire high-resolution NMR spectra for solid systems with structural disorder. But the structural origin of the observed chemical shift nonequivalence in these systems has not been revealed. We report a quantum chemical investigation of the solid-state NMR spectrum in N,N-bis(diphenylphosphino)-N-((S)-R-methylbenzyl)amine, where eight…
A general two-step approach has been developed for the synthesis of very small and sintering-resistant bimetallic gold-silver nanoparticles on inert supports including commercial silica and alumina. In this approach, gold particles were formed in the first step on amino-functionalized silica or alumina support. Our density functional theory (DFT) calculations on selected model clusters show …