Synthesis of nitrogen-containing phenol formaldehyde oligomers,grafted with vegetable oils

Synthesis of nitrogen-containing phenolformaldehyde oligomers (phfo), grafted with vegetable  oils is aimed at the acquisition of new range coating materials. Oil has been used as an example of soybean and linseed oils. The interaction  between phfo and vegetable oil is carried out by  means of functional groups as result of the oxidation prosesses on carbon atoms adjacent to the double bond and the functional groups,including oligomer macromolecules. Physical-chemical properties of nitrogen-containing as result of modification by means of benzoguanamine (bga)  monoalkyl (C8-C12)phfo, grafted with soybean oil is reflected. The probable structure  of the nitrogen-containing monoalkyl(C8-C12)phfo, grafted with soybean oil has been studied by means of NMR- and IR-spectroscopy methods. The mechanism of the occurrence of first and second stages of the process are described

“John Galsworthy’s creative activity and its interrelationship with Russian Literature of the XIX century”

This master thesis is devoted of the research work is to investigate the characteristic features of both Russian and English literatures, to analyze the interrelation between them, and to explain their influence on Galsworthy’s and Tolstoy’s works

Conservation liquids on the bases of turbine oil of grade T-30 and corrosion inhibitor

Conservation liquids have been prepared by adding to T-30 turbine oil different amounts of amidoamine compounds synthesized in 2:1 molar ratio of technical petroleum acids (TPA) to polyethylenepolyamine (PEPA), nitro-compound and phenol-p-alkyl(C8-C12)phenolformaldehyde olygomers on the basis of C14H28 containing α-olefin, as well as composition on the bases of them. Defined that the use of these compounds as compositions records high result as corrosion inhibitor in protection of metal constructions.Â

BARRIERS OF EXTERNAL ECONOMIC ACTIVITIES TO RUSSIAN NON-COMMODITY EXPORTS

The non-commodity exports development issues from the Russian Federation to foreign countries have been considered. The main barriers, constraining the development of non-commodity exports have been analyzed. Also the classification of such “barriers of ignorance” has been developed and the measures, allowing to reduce the impact of these barriers have been proposed: creation of an electronic commercial site; creation of multifunctional centers, in which certification and licensing procedures would be carried out, customs and tax сonsultancy to potential exporters, advice and assistance in obtaining the necessary permission documentation in foreign countries; сounselling on the correct execution of foreign economic contracts to avoid double taxation and transfer pricing and other measures

The interplay of hormonal and infectious factors in the pathogenesis of complicated pregnancy

Introduction. The causes for adverse pregnancy outcomes are usually complex and, in some cases, can worsen each other.Aim. To assess the role and establish the interplay of hormonal and infectious factors in the pathological course of pregnancy in women with threatened spontaneous miscarriage.Materials and methods. A total 120 pregnant women were enrolled for the observational prospective study, in which they were divided into 4 groups. Group 1 included 32 patients with threatened spontaneous miscarriage and hyperandrogenism (HA), who received glucocorticosteroids (GCS); group 2 included 28 patients with threatened spontaneous miscarriage and HA, who did not receive GCS; group 3 included 30 patients with threatened spontaneous miscarriage without HA; group 4 (control) included 30 women with a physiological course of pregnancy. The following examination methods were used: clinical assessment of the course of pregnancy; measurement of the serum levels of dehydroepiandrosterone sulfate (DHEA-S), 17-hydroxyprogesterone (17-OHP) and total testosterone at weeks 5 to 8, 9 to 12, 13 to 18, 19 to 24 and 25 to 32 of gestation; microbiological tests of  vaginal discharge.Results. The evaluation of androgenic status showed that the levels of the tested hormonal parameters in women with HA significantly exceeded those of the control group, while the changes in 17-OHP and testosterone secretion was comparable to that in women without HA, and DHEA-S level decreased to control values by the third trimester. The use of corticosteroids was associated with significant changes in the values and secretion levels of 17-OHP and DHEA-S, but not testosterone; DHEA-S levels decreased to the values that were significantly lower as compared to all groups in the third trimester of pregnancy.Conclusions. Vaginal infections play an important role in the genesis of gestational failures. Hyperandrogenism exacerbates the problem of miscarriage, however, the use of corticosteroids does not result in improved hormonal characteristics and clinical pregnancy outcomes, deteriorating the vaginal biocenosis

Исследование временных рядов средствами, встроенными в программную среду вычислений R

The paper is devoted to the study and forecasting of time series using the R computing software environment. The analysis of the functions and methods of the R environment themselves. There are various packages in R. A package is a collection of any R's functions, examples of the use of these functions and reference information on the use of packages. Each package is an addition to the base R and usually describes some specific topic.Настоящая работа посвящена исследованию и прогнозированию временных рядов с помощью программной среды вычислений R. А также анализ самих функций и методов среды R. В R существуют различные пакеты. Пакетом является набор каких-либо функций R, примеры использования этих функций, а также справочная информация по использованию пакетов. Каждый пакет является дополнением к базе R и обычно описывает какую-то конкретную тему

Russian – Azerbaijani relations during and after Dmitry Medvedev’s term in office

This paper is concerned with the period in the relations of these two countries when Dmitry Medvedev was the president of Russia and the time-period after his presidency. In order to be specific, we took the period from 2008 when Medvedev was elected president and covered the period including year 2013. Although this paper was written in the middle of 2014 we mostly limited the research to year 2013 in order to have conclusive statistical data for comparative analysis of different aspects of relations. This period of relations between the two countries is currently not researched thoroughly and the scholarly articles referring to it are limited, mostly small in size and covering a certain event of the period

Administration of Sex Hormone Preparations as a Risk Factor in the Development of Intrahepatic Cholestasis of Pregnancy and Biliary Sludge in Pregnant Women

Sex hormone preparations are widely used in obstetrics for the treatment of infertility and miscarriage. Possible adverse effect of sex hormone preparations during pregnancy is their potential adverse impact on the hepatobiliary system. The most common pathology of the liver and gallbladder associated with pregnancy are intrahepatic cholestasis of pregnancy (ICP) and biliary sludge (BS).Aim.  The aim of the study is to evaluate the effect of female sex hormones on the course and effectiveness of treatment of ICP and BS during pregnancy. Materials and methods.  The study included 158 pregnant women (97 patients with ICP and 61 patients with BS). Exogenous hormonal effects were the use of assisted reproductive technologies (ARTs) and in vitro fertilization (IVF) for the onset of conception and/or the use of estrogen and progesterone preparations during pregnancy. ICP was diagnosed on the basis of detection of an elevated level of bile acids (above 8 μmol/L) in the blood serum. Patients underwent clinical, laboratory and instrumental studies (abdominal ultrasound, including the assessment of gallbladder motor-evacuator function initially and after 2 months of treatment, and pelvic ultrasound). Pruritus intensity associated with ICP was assessed using a 0–3 score scale. Patients with BS received treatment with ursodeoxycholic acid (UDCA) in a dose of 250–750 mg and choleretic herbal preparation (artichoke extract) for 2 months. Patients with ICP were treated with UDCA in a dose of 500–2000 mg until delivery. Biochemical laboratory parameters in the ICP group were evaluated after 1 and 2 weeks of treatment.Results.  More than half of patients with BS and ICP were taking sex hormone preparations or had a pregnancy that occurred after the application of ART programs. In patients who became pregnant after ART, the ICP developed at a significantly earlier time than in patients with a naturally occurring pregnancy (p < 0.001). The use of sex hormones proved to be interrelated with a high frequency of cholestasis recurrence after its regression in the course of the treatment (p < 0.001). Patients with pregnancy after ART programs, as well as taking sex hormones, had an increased risk of BS developement. The intake of sex hormones (p = 0.005) in patients with ICP was associated with a more frequent development of preeclampsia and the need for caesarean section (p = 0.003). The use of ART programs and hormonal therapy, as well as the presence of BS in patients with ICP, were interrelated with oxidative stress. BS on the ICP background was associated with the development of intrauterine fetal hypoxia. In pregnant women with BS, the reception of progestins was significantly (p = 0.004) correlated with functional impairment of the motor function of the biliary tract (BT). In the presence of BS, ICP occurs with more severe liver damage, and the patients are inferior to respond to UDCA treatment. Prognostic factors in the insufficient effectiveness of BS treatment: the use of sex hormone preparations during pregnancy, the presence of the polycystic ovary syndrome (PCOS) in the anamnesis, an older age at the time of pregnancy and conception after ART.Conclusion. The use of sex hormone preparations and ART programs are shown to be additional factors contributing to the emergence of ICP and BS during pregnancy. For the pregnant women taking sex hormone preparations and/or becoming pregnant after ART programs, it is important to conduct laboratory and ultrasound screening for early detection and timely treatment of ICP and BS. BC patients of older ages who have become pregnant after ART programs and take sex hormones preparations and/or have a PCOS in an anamnesis may need longer or repeated courses of BS treatment