A series of Ce3+ doped and Ce3+/Mn2+ co-doped calcium zirconium silicate CaZrSi2O7 (CZS) phosphors have been synthesized via conventional high temperature solid state reactions. The luminescence properties, energy transfer between Ce3+ and Mn2+ have been investigated systematically. Under 320 nm...

Herein, a study of the surface modification of zirconium by anodic oxidation is reported. The oxidation process was carried out in a solution containing K2SiO3 and KOH. The anodization was conducted at voltages of 100, 200 and 400 V. It was found that the morphology of the surface did not change...

IntroductionA root canal obturated with a calcium silicate–based sealer (bioceramic sealer [BCS]) and a modified gutta-percha cone (bioceramic cone [BCC]) might improve the fracture resistance of the root. The objective of this study was to evaluate root reinforcement of a bioceramic cone/seale...

IntroductionAn ideal root canal sealer creates a bacteria-resistant seal and exhibits antimicrobial activity, biocompatibility, and osteoconductivity. The aim of this study was to assess the effects of 3 root canal sealers on cell viability, inflammatory response, and osteogenic potential in MC3...

We report on the microstructure evolution of yttria-stablized zirconia (YSZ) corroded by molten deposits of Ca10Mg7Al13Si70 (CMAS). The CMAS corrosion induces significant zirconium silicate (ZrSiO4) growth across the entire YSZ coating and causes dramatic microstructure changes marked by the com...

Nitroaromatic compounds are classified as toxic-carcinogenic pollutants and explosives. The removal of these compounds represents a great challenge. Therefore, the adsorption behaviors of 4-nitrobenzoic acid and 4-nitroaniline onto a fabricated nanocomposite were researched via a green functiona...

Acetylacetone, ethylacetoacetate and salicyldehyde, are reported to form chelates with copper of high stability as compared to other metals. Therefore, PVC based membranes of bis[acetylacetonato] Cu(II) (A), bis[ethylacetoacetate] Cu(II) (B) and bis[salicyldehyde] Cu(II) (C) have been investigat...

In this paper two different methods for the preparation of copper-containing catalysts have been described. Copper (II) ethylacetoacetate or copper (II) nitrate metallic precursors have been immobilized onto previously organofunctionalized MCM-41 material with N4-(3-(triethoxysilyl)propyl)pyrimi...

Copper catalyzed reactions suffer from harsh conditions of high temperature, high pressure, over-stoichiometric amount of copper reagents and use of expensive ligands. In an attempt to develop a mild, efficient and reusable system for copper catalyzed reactions, ethylacetoacetate was doped into ...

FTIR (Fourier transformed infrared) spectra have been collected and analyzed for solutions of lithium tetrafluoroborate in propylene carbonate (PC), diethyl carbonate (DEC), and PC + DEC mixtures. It has been shown that the carbonyl stretch bands of PC and DEC, the ring of PC and the ether oxyge...

A series of novel poly(acrylic acid)-based polymer electrolytes with high conductivities at room temperature has been prepared and studied. Polymer electrolytes composed of poly(acrylic acid) (PAA) and lithium tetrafluoroborate (LiBF4) were prepared by means of solution casting. The effect of th...

Despite rapid progress in DNA biosensors by employing various materials as well as techniques, most of the reported sensors are based on specific recognition of a DNA fragment, however can not perform universal measurement of DNA molecules (i.e. genomic DNA). In this work, we proposed a novel DN...

Gold electrodes have been used in a wide range of electrochemical biosensors because their functionalization process with thiols has been well described and, in general, they offer good chemical stability. However, one of the most commonly used redox-pairs in electrochemical impedance spectrosco...

Fungal FAD-dependent glucose dehydrogenases (FADGDHs) are considered to be superior enzymes for glucose sensor strips because of their insensitivity to oxygen and maltose. One highly desirable mediator for enzyme sensor strips is hexaammineruthenium(III) chloride because of its low redox potenti...

Concerns over the toxicity associated with ‘naphthenic’ acids (NA) within oil produced waters and oil sands process waters (OSPW), whether justified or not, have increased the need for the structural elucidation of NA. Certainly, oil sands mining operations, such as those in Alberta, Canada, r...

This study developed a method for the direct conversion of the biomass-derived furan to the methyl levulinate, a platform molecule, via acid-catalysis in dimethoxymethane/methanol. Dimethoxymethane acted as the electrophile to transform furan into 2-methoxymethyl-furan (the ether of furfuryl alc...

In order to study the biological activities of transitional metal complexes based on 4-acyl pyrazolone derivatives, two Mn complexes [Mn(HLa)(La)]·(CH3CN)1.5·H2O (1) and [Mn2(Lb)2(μ-EtO)2(EtOH)2] (2) (H2La = N-(1-phenyl-3-methyl-4-benzoyl-5-pyrazolone)-2-thiophenecarboxylic acid hydrazide, H2...

A series of acrylic acids and their structurally related compounds were evaluated for their binding affinity to four EP receptor subtypes (EP1-4). Starting from the initial hit 3, which was discovered in our in-house library, compounds 4 and 5 were identified as new chemical leads as candidates ...

In the work the effect of alkali metal cations on the electronic system of heterocyclic five-membered heterocyclic acids that possess S, N and O atoms was studied (2-thiophenecarboxylic, 2-furanecarboxylic and 2-pyrrolecarboxylic acids). The experimental (IR, Raman, NMR) and theoretical (in B3LY...

Sulfur-containing polycyclic aromatic hydrocarbons (thia-PAHs or thiaarenes) are common constituents of air pollution and cigarette smoke, but only a few have been studied for health effects. We evaluated the mutagenicity in Salmonella TA98, TA100, and TA104 of two sulfur-containing derivatives ...