36 research outputs found

    The Synthesis of Crystals of Chalcogenides of K, Zr, Hf, Hg, and Some Other Elements in Halide Melts under Conditions of Stationary Temperature Gradient

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    © 2019, Pleiades Publishing, Inc. Abstract: The growth of crystals of metals, alloys, chalcogenides, and pnictides in melts of alkali metal halides under conditions of stationary temperature gradient has been studied. The formation of crystals with participation of elements that were not considered in previous studies (mercury, zirconium, hafnium, germanium, sodium, potassium, rhenium, and osmium) is described. Mechanisms of element transport in salt melts are proposed. It is shown that most of crystals are obtained from ions in which necessary elements exist in most conventional oxidation states

    The Synthesis of Crystals of Chalcogenides of K, Zr, Hf, Hg, and Some Other Elements in Halide Melts under Conditions of Stationary Temperature Gradient

    No full text
    © 2019, Pleiades Publishing, Inc. Abstract: The growth of crystals of metals, alloys, chalcogenides, and pnictides in melts of alkali metal halides under conditions of stationary temperature gradient has been studied. The formation of crystals with participation of elements that were not considered in previous studies (mercury, zirconium, hafnium, germanium, sodium, potassium, rhenium, and osmium) is described. Mechanisms of element transport in salt melts are proposed. It is shown that most of crystals are obtained from ions in which necessary elements exist in most conventional oxidation states

    Modern possibilities of urorectal fistula laparoscopic fistuloplasty

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    The aim was to study the laparoscopic fistuloplasty possibility of the urorectal fistula (URF) that has occured after the rectal resectionin patient with colon cancer and to determine the ways to improve the results of the treatment for this complication. Patient N., 60 y. o., underwent the successful laparoscopic fistuloplasty of the URF that has occurred after surgical treatment for colon cancer and adjuvant polychemotherapy. The minimally invasive fistuloplasty is possible and has a good tolerability even in patients with oncopathology after extended pelvic surgical treatment and chemotherapy. Due to the operation specific this kind of surgery should be performed only in center with high laparoscopic and pelvic surgery experience

    Morphological study of telocytes in the left atrium in patients with long-term persistent atrial fibrillation

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    The telocytes were found in the human atria in 2005. Atrial fibrillation (AF) is the most common heart rhythm disorder, accompanied by inflammation and fibrosis, however, the morphological analysis of telocytes in this pathology has not yet been performed.Aim. To make morphological analysis of left atrial telocytes in patients with longterm persistent AF.Material and methods. The study was based on the left atrial (LA) wall of 10 patients with AF, 10 without AF (autopsy material) and LP fragments of 2 patients with AF (surgical material). A histological, immunohistochemical, and ultrastructural study, telocyte culture isolation, and confocal laser microscopy were performed.Results. The presence of telocytes in the LA was confirmed. Morphometric analysis revealed that the average number of telocytes in the LP was significantly less by 3 times in patients with AF than without it (2,7±1,1 vs 8,2±3,0 with x400). Correlation analysis revealed significant negative associations of the number of telocytes with AF, fibrosis, lipomatosis, and inflammation.Conclusion. The development of inflammation and fibrosis in AF is accompanied by the loss of telocytes
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