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OE Kolesova LM Alekseeva LA Apollonova TM Frolova VV Ivanitskaia 《Canadian Metallurgical Quarterly》1982,45(2):59-62
The increase of the concentration of fatty acids, the reduction in the concentration of serotonin, the lowering of the activity of glucose-6-phosphate dehydrogenase and transketolase, and the development of compensated metabolic acidosis were discovered in the stage that preceded strophanthine arrhythmia. These characteristics may be recommended for a wider use on the clinical basis for predicting arrhythmias in the treatment of cardiac glycosides. 相似文献
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II Gitel'zon VP Nefedov VV Mezhevikin VA Samo?lov IuV Kotlovski? 《Canadian Metallurgical Quarterly》1977,84(7):23-24
Hypoxemia (45-minute) influence in vivo on erythropoietic activity of the kidney, liver, spleen, and sternum was studied by normoxemic perfusion of the isolated organs. The erythropoietic activity proved to increase after 6-hour perfusion of the liver; this confirmed the participation of this organ in the extrarenal secretion of the erythropoietic factor. 相似文献
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AI Necha? VM Sitenko KV Novikov VV Stukalov VT Drobot 《Canadian Metallurgical Quarterly》1980,125(10):27-35
Concrements were found in the ducts of 172 patients subjected to secondary surgical interventions on bile ducts. The detailed analysis of the data failed to answer the question whether the stones could be formed immediately in the ducts without such conditions as a mechanical obstacle for the outflow of bile, the presence of foreign bodies and a big stump of the cystic duct. Such a formation of stones can take place in very few cases. The authors have shown that control cholangiography and especially choledochoscopy can reduce the danger to leave the stones in the ducts, but does not eliminate the danger completely. Nevertheless they think that now it is possible to lessen the indications for biliodigestive anastomoses in choledocholithiasis since the retained stones can be revealed within the first days after surgery and, as a rule, removed with instruments or by other methods using the drainage left in the ducts. 相似文献
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S. R. Egorova G. E. Bekmukhamedov A. A. Lamberov R. R. Gil’mullin Kh. Kh. Gil’manov 《Catalysis in Industry》2011,3(1):87-95
This publication continues a series of our reports on the optimization of preparation conditions for obtaining a thermally
stable support for the alkane dehydrogenation catalyst. The phase composition effect on the stability, particle size distribution,
structure, texture, and mechanical properties of supports heated to 1100°C is reported. Microspherical alumina supports obtained
by successive thermal and hydrothermal treatments of gibbsite are compared to commercial supports obtained by the thermochemical
activation (TCA) of gibbsite. The dimensions of the support granules decrease upon heating because of shrinkage, which is
governed by the phase composition of the granules and by the packing of their constituent boehmite and alumina crystallites.
Three temperature intervals can be distinguished in the shrinkage of the granules. In region I (<600°C), there is intensive
shrinkage via the diffusion glide of crystallites, the mechanical strength of the granules remaining invariable. In region
II (600–900°C), the polymorphic transformations of alumina accompanied by sintering via surface diffusion do not affect the
dimensions and strength of the granules. In region III (>900–1000°C), shrinkage takes place via coalescent sintering. For
commercial manufacturing of microspherical alkane dehydrogenation catalysts and for ensuring their stability at 550–900°C,
it is recommended to use alumina supports containing the minimum possible amount of χ-Al2O3. As the single-phase boehmite support obtained by our technology is heated to 1100°C, its granules shrink by no more than
14.4% and show an attrition resistance of 89% or above. The support based on the gibbsite TCA products, which contains 14–23
wt % χ-Al2O3, is characterized by 3–5% greater granule shrinkage and 6–12% lower mechanical strength. 相似文献
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