0.2%–3% weight of Dy3+ ions doped 64GeS2·16Ga2S3·20CdI2 glasses were synthesized, and their spectroscopic properties were investigated. It was shown that the host glass could dissolve as much as 3% Dy3+ ions without deteriorating the glass transparency. The mid-infrared (MIR) emissions of the...

The diiodides of divalent neodymium (1), dysprosium (2), and thulium (3) LnI2 readily reduce azobenzene under ambient conditions to give binuclear complexes [LnI(THF)2]2(N2Ph2)2 (Ln=Nd (4), Dy (5), Tm (6)). Magnetic measurements and X-ray structural analyses of 5 and 6 revealed that the bridging...

Luminescence and binding properties of dysprosium(III) complex containing 1,10-phenanthroline (phen), [Dy(phen)2(OH2)3Cl]Cl2⋅H2O with DNA has been studied by electronic absorption, emission spectroscopy and viscosity measurement. The thermodynamic studies suggest that the interaction process to ...

The binding mode and mechanism of dysprosium–naproxen complex (Dy–NAP) with calf thymus deoxyribonucleic acid (ctDNA) were studied using UV–vis and fluorescence spectra in physiological buffer (pH 7.4). The results showed that more than one type of quenching process occurred and the binding m...

Rare earth elements (REEs) are critical materials to many cutting-edge technologies but are difficult to separate from one another because of their chemical similarity. We present ionic imprinted mesoporous bilayer films (IIBFs) as an ideal adsorbent for selective separation of neodymium (Nd) an...

A detailed thermodynamic study of the DySe1.875–DySe1.50 system has been performed using a static method within the temperature range 595–1330 K. Single crystals of DySe1.875 composition grown by chemical transport reactions were investigated as an initial compound. The p–T–x dependences obt...

The distribution rules of impurities contents in distilled metallic dysprosium were researched, and a theoretical analysis was carried out. The research results indicated that, the content of impurity in distilled metal, such as Al and Fe, was lower in the initial stage, increased slowly in the ...

In an attempt to get more insight into the way of formation of recently obtained unusual iodide-sulfide-nitride clusters Ln3I5(S2)(S2N2)(THF)10 (Ln = Nd (1), Dy (2)) and modify this synthesis reactions of dysprosium iodide-nitride with sulfur were carried out in various conditions. It was found ...

The presence of 2,5-dichloroaniline in estuarine and marine waters is reported. A method for the quantification is described and the results of the quantification in water from the North Sea are given for 1990 and 1995. The concentrations reach from

Poly(2,5-dichloroaniline-co-aniline), poly(2,3-dichloroaniline-co-aniline) and poly(3,5-dichloroaniline-co-aniline) have been synthesized by chemical copolymerization of aniline with the dichloroanilines in aqueous 1 M hydrochloric acid using potassium dichromate as oxidizing agent. The copolyme...

Rat brain adenylate cyclase (ATP pyrophosphate-lyase (cyclizing), EC 4.6.1.1) activity was markedly reduced when the enzyme was preincubated at 23°C for periods up to 30 min with phenylglyoxyal (2.5–20 mM), an agent that binds specifically to arginyl residues. The kinetics indicated the intera...

SummaryExcess cellular heme is toxic, and malaria parasites regulate its levels during hemoglobin digestion. Aminoacyl-tRNA synthetases are ubiquitous enzymes, and of these, arginyl-tRNA synthetase (RRS) is unique as its enzymatic product of charged tRNA is required for protein synthesis and deg...

Arginyl-tRNA synthetase has a reaction mechanism not typical of most aminoacyl-tRNA synthetases. It does not catalyze an amino acid-dependent ATP-PP1 exchange in the absence of tRNA as do most enzymes of this class. In order to clarify the reaction mechanism by performing experiments with substr...

Publisher SummaryThe imidazole ring is present in a number of biologically important molecules as exemplified by the amino acid histidine. It can serve as a general base or a ligand for various metals (e.g. Zn, etc.) in biological systems. Furthermore, the chemistry of imidazole is prevalent in ...

In this paper, we report the synthesis and biological evaluation of a series of 1,5- and 1,4- substituted derivatives of 1H-imidazol-4-ylacetic acid, a series of 1,2-substituted 3-(1H-imidazol-2-yl)propanoic acid and an N-substituted (2E)-3-(1H-imidazol-2-yl)prop-2-enoic acid as new mGAT3 inhibi...

Previously we have reported a metal chelating histidine–pyridine–histidine system possessing a trityl group on the histidine imidazole, namely HPH-2Trt, which induces apoptosis in human pancreatic adenocarcinoma AsPC-1 cells. Herein the influence of the imidazole substitution of HPH-2Trt was e...

A new series of potential GABA uptake inhibitors starting from of 1H-imidazol-4-ylacetic acid with the carboxylic acid side chain originating from different positions and varying in length have been synthesized and tested for the inhibitory potency at the four GABA uptake transporters mGAT1–4 s...

A new iron(II) complex has been prepared and characterized. [Fe(TrImA)2(OTf)2] (1, TrImA = 1-Tritylimidazole-4-carboxaldehyde). The solid state structure of 1 has been determined by X-ray crystallography. Compound 1 crystallizes in monoclinic space group P21/c, with a = 10.8323(18) Å, b = 8.1606...

Plasma free fatty acid profiles from patients suffering from various mitochondrial ß-oxidation deficiencies were analyzed by gas chromatography–mass spectrometry. cis-4-Decenoic acid (10:1n-6) in medium-chain acyl-CoA dehydrogenase deficiency and cis-5-tetradecenoic acid (14:1n-9) in very-long-...

There is increasing evidence that omega-3 polyunsaturated fatty acids (PUFAs) have therapeutic potential in various animal models of neuronal injury. However, very few studies have examined the effect of medium-chain fatty acids (MCFAs) on neuronal injury. So in the present study we synthesized ...