Frequency Response of a Six-Electrode MET Sensor at Extremely Low Temperatures.

Four-electrode electrochemical cells are widely used for signal conversion in molecular-electronic transfer (MET) motion sensors. The most used ACCA (anode-cathode-cathode-anode) configuration has proven its performance and usefulness for obtaining a superior conversion factor and a wider frequency range over standard geophones at room temperature. However, the MET sensor conversion factor decreases a thousand-fold or more when the temperature drops from room temperature to 233 K.

Influence of the Dielectric Coating of the Outer Side of the Cathode in the Anode-Cathode Pairs of a Molecular Electronic Sensitive Element on the Conversion Coefficient.

Molecular electronic sensors of motion parameters use miniature electrochemical cells as a sensitive element, in which the interelectrode current is sensitive to external mechanical influences. New approaches for creating conversion elements are based on precision methods of micromachining materials. The use of new technologies has opened up the possibility of creating sensitive elements with configurations that have not been previously studied, and for which there is no clear understanding of the regularities that determine the output parameters depending on the geometry of the conversion elements.

Asymmetrically Functionalized 1,3-Di(2-pyridyl)benzenes: Synthesis and Photophysical Studies.

A convenient synthetic approach to asymmetrically functionalized 1,3-di(2-pyridyl)benzenes starting from 3-(3-bromophenyl)-1,2,4-triazines using sequential aza-Diels-Alder reactions and Stille cross-coupling is reported. Photophysical properties of the obtained compounds are studied.

Permutation test applied to lexical reconstructions partially supports the Altaic linguistic macrofamily.

In this paper, we present the results of our analysis of the 110-item basic wordlists for four reconstructed and one ancient languages, the linguistic ancestors of five language families which are hypothesized to constitute the Altaic (a.k.a.

5-Aryl-6-arylthio-2,2'-bipyridine and 6-Arylthio-2,5-diarylpyridine Fluorophores: Pot, Atom, Step Economic (PASE) Synthesis and Photophysical Studies.

A PASE (pot, step, atom, economic) synthetic approach to 5-aryl-6-arylthio-2,2'-bipyridine and 6-arylthio-2,5-diarylpyridine ligands/fluorophores has been reported via SH in 6-aryl-5H-1,2,4-triazines/aza-Diels-Alder reaction sequence. In this article, the "1,2,4-triazine" methodology was successfully used for the synthesis of C6-thiophenol-substituted (2,2'-bi)pyridines as it is well known that thio-substituted (bi)pyridines and their aza-analogs are of wide practical interest. The photophysical properties of the obtained compounds are studied and compared with those reported earlier for 6-substituted 2,2'-bipyridines.

Study of the Seismoelectric Effect of the Second Kind Using Molecular Sensors.

The article is devoted to the study of the potential possibilities of using molecular-electronic sensors of seismic waves for field work using the seismoelectric method to explore the hydrocarbon deposits. The introduction provides an analytical review of the current state of research based on data from science magazines and patents. It is shown that at present, seismoelectric effects are at the stage of experimental implementation into the practice of field work for oil and gas geophysical prospecting.

Deep high-temperature hydrothermal circulation in a detachment faulting system on the ultra-slow spreading ridge.

Coupled magmatic and tectonic activity plays an important role in high-temperature hydrothermal circulation at mid-ocean ridges. The circulation patterns for such systems have been elucidated by microearthquakes and geochemical data over a broad spectrum of spreading rates, but such data have not been generally available for ultra-slow spreading ridges. Here we report new geophysical and fluid geochemical data for high-temperature active hydrothermal venting at Dragon Horn area (49.

Broiler Cecal Microbiocenoses Depending on Mixed Fodder.

Molecular genetic techniques (NGS sequencing and quantitative PCR) were used to determine the composition of the cecal bacterial community of broiler chickens fed with different mixed fodder. The Cecal microbiome exhibited taxonomic diversity, with both typical inhabitants of avian intestine belonging to the families Clostridiaceae, Eubacteriaceae, and Lactobacillaceae and to the phylum Bacteroidetes, and new un- identified taxa, as well as bacteria of the families Lachnospiraceae and Ruminococcaceae, which were previ- ously considered restricted to the rumen microflora. Contrary to traditional concepts, enterococci and bi- fidobacteria were among the minor components of the community, lactate-fermenting species were absent, and typical avian pathogens of the genus Staphylococcus were detected but seldom.

Performance, gut morphology and microbiology effects of a Bacillus probiotic, avilamycin and their combination in mixed grain broiler diets.

1. This study aimed to determine the effect of avilamycin (AGP) and a multi-strain Bacillus probiotic (DFM) on the performance, gut histology and microbiology of broilers fed on a mixed grain diet. 2.

[Antibiotic-free poultry production based on innovative nutritional programs with the involvement of probiotics].

EU banned antibiotic growth promoters (AGP) for farm animals and poultry since 2006 in relation to the problem of drug resistance. This requires alternative products for equally efficient prevention and treatment of certain alimentary poultry diseases. One of the most actual trends is the development of innovative nutritional strategies for poultry providing an effective symbiosis between the host and its intestinal microbiota.

Metagenomic bacterial community profiles of chicken embryo gastrointestinal tract by using T-RFLP analysis.

Thirty microbial phylotypes of microorganisms were found in the gastrointestinal tract of chicken belonging to the Hajseks White breed, and 38 phylotypes were found in the gastrointestinal tract of chicken belonging to the Hajseks Brown breed. The microbiome of the gastrointestinal tract of the chicken embryos of the Hajseks White breed was dominated by the typical representatives of avian intestinal microflora--bacteria of the family Enterobacteriaceae (47.3%), orders Actinomycetales (13.

[Hypothermia induced alteration of refractoriness in the ventricular myocardium of ground souirrel Citellus undulatus].

Bioelectrical activity and refractoriness in ventricular myocardium of the hibernator--ground squirrel Citellus undulatus were investigated during hypothermia. Experiments were performed with use of isolated, perfused preparations of papillary muscle from right ventricular. Preparations were obtained from hibernating (HS), summer active (SAS) squirrels and from rats.

[Electrophysiological mechanisms of heart rate stability of the hibernating mammals during hypothermia].

Despite more than 100 years of study, the mechanisms of natural resistance of the hibernator heart to cardiac arrhythmias during hypothermia has remained unknown. Renewed optimism in this area of research comes with recent methodological advances which enable to shed light on the hidden secrets of the hibernator's heart. This review discusses basic mechanisms of hypothermic ventricular arrhythmias and highlights some recent findings from the hibernator's heart electrophysiology, which may have an antiarrhythmic potential for the human heart as well.

[Structural features of cardiomyocytes in the atrialized right ventricle in patients with Ebstein anomaly].

Intraoperative biopsy specimens were used to analyze the sizes and ultrastructure of cardiomyocytes (CMC) in the atrialized right ventricle (ARV) versus those in the right ventricle (RV) and right atrium (RA) in 32 patients aged 9 months to 57 years with Ebstein anomaly. The mean CMC diameter in ARV, RV, and RA did not differ significantly in patients less than 10 years; that was equal in ARV and RV, but higher in RA in patients over 10 years of age. No specific atrial granules were found in the CMC of ARV, RV, and RA; but T system channels and multiple intercalated disks were encountered significantly more frequently than in the RA cells.

Note: Numerical simulation and experimental validation of accelerating voltage formation for a pulsed electron accelerator.

This paper describes the development of a computation model of a pulsed voltage generator for a repetitive electron accelerator. The model is based on a principle circuit of the generator, supplemented with the parasitics elements of the construction. Verification of the principle model was achieved by comparison of simulation with experimental results, where reasonable agreement was demonstrated for a wide range of generator load resistance.

[Influence of new III class antiarrhythmic drug Niferidil (RG-2) on bioelectrical activity of rat pulmonary veins myocardium].

Myocardial cells in pulmonary veins are thought to play a major role in the initiation and maintenance of atrial arrhythmias, including atrial fibrillation. In experiments on rat pulmonary veins, antiarrhythmic drug niferidil (RG-2) produced increase of APD90% and functional refractory period and decrease of action potential amplitude and slope of APD restitution curve. Thus niferidil (RG-2) exerts stronger action on pulmonary veins than left atrium.

Chichibabin-type condensation of cyclic ketones with 3-R-1,2,4-triazin-5(4H)-ones.

Reactions between substituted 1,2,4-triazines and ketones were investigated. General procedures for one-pot synthesis of hydrogenated derivatives of such polycyclic systems as benzo[c][1,2,4]triazino[1,6-a][2]azecine, [1,2,4]triazino[1,6-f]phenantridine, and dicyclopenta[b,d]pyrido[1,2-f][1,2,4]triazine are described.

[Renal affection in gout].

The study of the problem of impairment of the kidneys in gout is important because investigation of gout nephropathy specifies the role of hyperuricemia (a known risk factor) in development of renal damage, on the one side, and emphasizes the role of early detection of hyperuricemic genesis of nephropathy allowing prognosis improvement due to administration of uricostatic treatment, on the other side. Earlier data on tubulointerstitial lesion are now supplied with information on essential glomerular damage due to endothelial dysfunction in the presence of insulin resistance often associated with gout.

[Complications after reconstructive implantation of silicone endoprostheses in patients with breast cancer].

Radical mastectomy, though is considered to be the main method of the breast cancer treatment, influences the physical and psychological rehabilitation of patients extremely negatively. Reconstructive silicone endoprosthesing alternates radical mastectomy. Complications of the procedure analysed using the experience of 120 women with breast cancer.

[Neutrophil bactericidal and absorptive function in gout].

Aim: To study neutrophil bacterial and absorptive functions and the specific features of their impairments in gout.

Subjects And Methods: The study included 48 male patients with a valid diagnosis of gout (mean age, 59.7 +/- 10.