Contrasting Magnetic Characteristics of Disordered NdBaMnFeO and 112-Type Ordered NdBaMnFeO Perovskites.

The magnetic properties of disordered NdBaMnFeO and ordered NdBaMnFeO perovskites were investigated through temperature- and field-dependent DC-magnetization measurements. The temperature dependence of magnetic susceptibilities revealed that antiferromagnetic ordering occurs at temperatures below 185 K for the disordered NdBaMnFeO sample, whereas the ordered NdBaMnFeO perovskite exhibited a paramagnetic state throughout the entire temperature range examined. Notably, the disordered sample exhibited a glassy state, even at room temperature, which transformed into an antiferromagnetic state under higher applied magnetic fields.

Development of LaCaNiCuO Materials for Oxygen Permeation Membranes and Cathodes for Intermediate-Temperature Solid Oxide Fuel Cells.

The LaCaNiCuO (y = 0.0-0.4) nickelates, synthesized via a solid-state reaction method, are investigated as prospective materials for oxygen permeation membranes and IT-SOFC cathodes.

Benefits of insect colours: a review from social insect studies.

Insect colours assist in body protection, signalling, and physiological adaptations. Colours also convey multiple channels of information. These channels are valuable for species identification, distinguishing individual quality, and revealing ecological or evolutionary aspects of animals' life.

Ant (Hymenoptera, Formicidae) diversity along a pollution gradient near the Middle Ural Copper Smelter, Russia.

Ants are considered to be suitable indicators of ecological change and are widely used in land management and environmental monitoring. However, responses of ant communities to industrial pollution are less known so far. We studied pollution-related variations of ant diversity and abundance near the Middle Ural Copper Smelter (Russia) in 2009 and 2013, with pitfall traps set up at 10 sites in Picea obovata and Abies sibirica forest.

[Glyciphonic ointment in the treatment of radiation-induced basal cell carcinoma of the skin].

Skin basalcell carcinoma of the head and neck occurring within 1.5-23 yrs on the site of radiation fibrosis were smeared daily with glyciphonic ointment without dressing the wound. Tumor disintegrated after 2-6 applications followed by edema tumor tissue development on days 22-24.

[Effect of subcutaneous administration of liposomes on the functional state of the organs and systems in experimental animals].

Based on the study of subcutaneous injection of lecithin-cholesterol liposomes, its possible toxic effect is discussed and the effect threshold is determined. It is shown, that long-term subcutaneous liposome administration is attended with hepatic cell damage. One or two injections of the preparation does not cause a toxic lesion of the viscera and may be used for therapeutic purposes.

Pharmacokinetics and metabolism of ryodipine in rats.

2,6-Dimethyl-3,5-dimethoxycarbonyl-4-(o-difluoromethoxyphenyl)-1, 4-dihydropyridine (ryodipine, PP-1466) at oral administration in the form of a suspension with Tween (polysorbate) 80 addition is comparatively rapidly absorbed in the gastro-intestinal tract and circulates in blood for a long period of time. PP-1466 practically does not bind to plasma proteins. The drug is mainly excreted via the kidneys and with faeces by 49 and 46% of the dose administered after 96 h, respectively.

[Interaction of BamH1 restrictase with synthetic substrates containing complete or partial recognition sites of this enzyme].

BamHI restriction patterns of the self-complementary oligodeoxyribonucleotides were investigated. Cleavage of the oligonucleotides, containing full-length recognition site GGATCC. shows a usual type of restriction pattern.

[Effect of silicoorganic compounds on protein biosynthesis in granulation-fibrous tissue].

The authors studied the effect of propoxysilatran (POS) on the biosynthesis of the main connective tissue biopolymeres. The use of POS in the form of 0.5 and 2.

[Interaction of 2,6-dimethyl-3,5-dicarbethoxy-1,4-dihydropyridine with enzymes of the NADP.H2-specific electron transport chain of rat liver microsomes].

2,6-Dimethyl-3,5-dicarboethoxy-1,4-dihydropyridine (DHP) interacts with NADPH-dependent electron transfer system of rat liver microsomes: it forms a complex with the terminal oxidase-cytochrome P-450, according to type I, and inhibits clearly the activity of NADPH-cytochromes c-reductase and mitindione dimethylesterase. DHP repeatedly administered in vivo rendered no inducing influence upon the microsomal enzymes.

[Pharmacokinetics of ftorafur-2-14C in rats with Walker carcinosarcoma].

The pharmacokinetics of phthorafur-2-14C (Ph) was investigated after its intravenous injection to rats with Walker carcinosarcoma. The blood plasma level of Ph-2-14C and its metabolites proved to decrease in to a three-phase process. The content of the agent in the tissues decreased in the following sequence: the kidney, small intestine, tumour, stomach, muscle, heart, liver, lungs, spleen, brain and fat.

[Demethylation of methindione].

Methindion demethylation was shown to occur in rats. This process proceeds with the participation of NADPH-dependent transport system of microsomal electrons. In experiments in vivo methindion demethylation coursed at a high rate and was accompanied by a partial loss of its anticonvulsive effects.

[Participation of non-specific rat liver microsome oxidases in destruction of Nl-furanidylpyrimidines].

N1-(3'-Butyrolactono)-5-fluorouracil, N1-(2'-furanidyl) 5-trifluoromethyluracil, N1-(2'-furanidyl)-5-fluoracil are split in the rat organism with the formation of free 5-fluorouracil. The destruction of the C--N bonds in the molecule of the N1-(2'-furanidyl)-5-fluoracil takes place in the liver microsomes. This process is strengthened by NADPH and weakened by SKF-525A.

[Clinical pharmacokinetics of 2-C14-ftorafur in patients with astrocytoma].

Patients with dedifferentiated brain astrocytoma during an operation were injected intravenously 2-C14-fluorofur (3 muC/Kg). In different periods after the injection the level of radioactivity was determined in different sites of the tumor, brain tissue, as well as in blood plasma, cerebrospinal liquor and urine. Intracellular localization of the labeled substance in the tumor tissue was examined autohistoradiographically.

[Pharmacokinetics of dioxonium].

An investigation in the pharmacokinetics of a new peripheral muscle relaxant dioxonium and of its carbon-labeled analogue (with respect to the N-methyl groups) was carried out. An intravenous administration of dioxonium-C14 was found to bring about a biphasic change in radioactivity of the blood plasma. The stoppage of curarization, irrespective of a dioxonium dose, is seen to occur at a definite radioactivity level in the blood plasma.