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The radical terpolymerization reactions of the acceptor-donor-acceptor and donor-acceptor-donor systems, maleic anhydride (MA)-allyl propionate (AP)-methyl methacrylate (MMA) and styrene (St)-MMA-AP, had been studied. The terpolymerizations were carried out in methyl ethyl ketone at 60-75 °C in the presence of 2,2’-azoisobutyronitrile (ABIN) used as the initiator. Some kinetic parameters and copolymerization constants - for both, system were determined by dilatometric and Kelen-Tudos or Seiner-Lift methods. The obtained results are discussed in terms of the free monomer and complex chain growth models. It is shown that terpolymerization was carried out at a stage close to binary copolymerization of MA...AP complex with free MMA and St...MMA complex with AP in the both studied system, respectively. These systems are also used as model for interpretation of cyclocopolymerization mechanism in allyl methactylate-MA (or St) system. DTA and TGA analyses indicated the relatively high thermal stability of St-MMA-AP terpolymer. It is shown that this terpolymer decomposes through a one-step reaction at 310 °C, however MA-AP-MMA terpolymer decomposes through a multi-step reactions at 150, 260 and 310 °C.

A unique role of the language in the history of mankind is an undeniable truth. From this perspective, the history of languages is of great interest for scientists. Of course, the Persian language is no exception in this regard. It was one of the three main languages (Turkish, Arabic and Persian) of the Middle and Far East during the middle Ages, still those were non-Persian, particularly the Azerbaijani poets, writers and lexicographers who had contributed to the development of this language. It is no coincidence that the beginnings of Persian lexicography took shape in the work “تفاسیر” (“Tefasir”) of the great Azerbaijani scholar and poet Qatran Tabrizi in the beginning of the eleventh century. This article explores the works by the famous statesmen and Azerbaijani scholars Hindushah Nakhchivani and his son Mahammad ibn Hindusah Nakhchivani in the field of the Persian language of that time and scientifically substantiates their role in the formation and development of the lexicography of this language.

The article presents the results of studying the etiological structure and clinical features of acute intestinal infections (AII) in young children in Baku, Azerbaijan. In most cases, the disease has a viral etiology and proceeds in the form of gastroenteritis. At the same time in the age groups 6—12 months and 1—3 years of life, viral intestinal infections in 72.72% of cases have a mixed etiology (usually viral-viral), with a predominance of rotavirus infection. Taking into account the obtained results, it is necessary for all children of early age with AII, in addition to routine diagnostics, to conduct research using modern methods for virus verification (Latex-test, PCR).

The purpose of this study was to study the state of the intestinal microflora in young children who received inpatient treatment for acute intestinal infections. A study of the microflora in 183 children aged 0 months. up to 3 years of life. At the same time, 43 (23.5%) children received breast milk, 53 (29.0%) were artificially fed and 87 (47.5%) mixed-fed children. All children were examined by bacteriological method. Conditionally pathogenic flora among hospitalized patients was detected in 114 (62.3%), Candida was mainly detected in 67.5% of cases, in 57 patients (50.0%) in association with other opportunistic microorganisms — Candida + St. aureus — in 32 (28.1%), Candida + P. vulgaris — in 9 (7.9%), Candida + + P. vulgaris + St. aureus — in 12 (10.5%), Candida + St. aureus + Ps. aeroginosa — in 4 (3.5%). As a result of studying the composition of the intestinal microflora in patients hospitalized with intestinal infection, a decrease in the number of E. coli and B. bifidum was found, 43.7% and 63.4%, respectively.