Coordination of Cu(II) and Ni(II) in polymers imprinted so as to optimize amine chelate formation

Molecular imprinting has become an established technique. However, little was done on direct investigation of the sorbents produced. In the present work, en ESR method was used for the investigation of the complex formation processes within the sorbents imprinted with copper(II) and nickel(II). The sorbents were synthesized from a mixture of linear low molecular weight polyethyleneimine oligomers. The composition, structure and distribution of complexes in the resin phase were investigated. The effects of the synthesis conditions, loading degree and water content were examined. The presence of certain copper complexes was found to be a convenient characteristic of the imprinting efficiency. The optimum synthesis conditions for obtaining sorbents imprinted with copper(II) or nickel(II) were identified. The imprinting results in the improvement of the stability of the complexes and the selectivity and working capacity of the sorbents. The imprinted samples are also characterized by a more even distribution of chelating sites. The synthesis conditions and loading by ions allow for the regulation of the ratio between individual complexes and magnetic associates in the resin phase. This is a critical point on the future use of the metal containing imprinted sorbents as catalysts. (C) 2003 Published by Elsevier Science Ltd

Functional Properties of Soy Substrates Modified by the Use of Different Enzymatic Treatments

The authors are grateful to Ms. Darya Sabinina from the Institute of Immunology and Physiology, Ural Branch RAS for running LC-MS experiments

Application of mental maps for organizing testing of software products

The article reveals the main ways to create mental maps. The features of the program MindMeister for testing software productsВ статье раскрываются основные способы создания ментальных карт. Приведены особенности программы MindMeister для тестирования программных продукто

THE IMMUNE STATUS AND IFN GENE POLYMORPHISM AS PROGNOSTIC CRITERIA FOR THE EFFECTIVENESS OF HEPATITIS C TREATMENT IN HIV-INFECTED PATIENTS

Abstract. The aim of the study was to evaluate the role of immune status and IFN gene polymorphism in the prediction of the efficacy of chronic hepatitis C antiviral therapy in HIV-infected patients. Eighty HIV-infected patients with hepatitis C were recruited. Antiviral therapy included pegylated interferon-α and ribavirin. Flow cytometry was used to test the immune status; polymerase chain reaction method was used for the IFN gene polymorphisms determination. It was found the significant differences in the immune status and allelic variants combinations of the genes responsible for the formation of an adequate immune and antiviral responses in groups of patients with different response to treatment of hepatitis C. Herewith the effectiveness of hepatitis C treatment in HIV-infected patients is associated with the activation of T-cell immunity. Polymorphisms of interferon gene with other prognostic factors, make it possible to better define the disease prognosis and the treatment efficacy

Novel extration techniques of resverattrol from biowaste

The research was partially supported by Russian Science Foundation, grant № 20-66-47017 and by RFBR grant 18-29-12129mk

Is a Dialogue Between Technical Science and Philosophy Possible: The Way of Martin Heidegger

В статье на основе философии Мартина Хайдеггера рассматривается возможность диалога или взаимодействия между наукой (технонаукой) и философией. Анализируется феноменологический метод как основной путь к пониманию технонауки.The article, based on the philosophy of Martin Heidegger, examines the possibility of dialogue, or interaction between science (technoscience) and philosophy. The phenomenological method is analyzed as the main way to understanding technoscience

Dynamics of pH-sensitive nitroxide radicals in water adsorbed in ordered mesoporous molecular sieves by EPR Spectroscopy

A spin pH probe technique was used to study the influence of the channel diameter on the EPR spectra of pH-sensitive nitroxide radicals (NR) located in the channels of the mesoporous molecular sieves MCM-41 and SBA-15 with diameters ranging from 2.3 to 8.1 nm. From EPR spectra analysis and the results of the NR retention by the mesoporous molecular sieves upon washing with an aqueous KCl solution, the regularities of NR molecular location inside the channels were studied. The obtained dependence of the fraction of the radical molecules in the fast motional regime (with the rotational correlation times, τc = 2 × 10-11 s-9 × 10-11s) in the channels of the mesoporous molecular sieves as a function of pH indicates that both NR in the fast and slow motional regime (with τc = 8 × 10 -9s-7 × 10-10s) may be used for estimation of the solution acidity inside the channels and of the near-surface electrical potential. © 2013 Elsevier Inc. All rights reserved

Oxidative dehydrogenation of 2,3,5-trimethyl-1,4-hydroquinone in the presence of titanium dioxide hydrogel

Liquid-phase oxidative dehydrogenation of 2,3,5-trimethyl-1,4-hydroquinone in the presence of titanium dioxide hydrogel was studied by a kinetic method. Associative interactions between the substrate, oxidant, and gel were detected by voltammetry and ESR and IR spectroscopy.Russian Foundation for Basic Researc

Social networks as a means OF English language teachingof students of radiotechnic educational programms

The article is devoted to the study of the social network Vkontakte as a new element of information and communication technologies in the classroom of the English language teaching in higher education. Particular attention is paid to the integration of popular social networks in the educational process in order to further development of the educational material given in the classroom with students of radioelectronic educational programms of the Ural Federal University. Active and widespread use of mobile devices and social networks in everyday life ensures the relevance of their application for students. The purpose of this study is to determine the approaches and principles of teaching using social networks, to develop stages of work with social networks, to determine the actual methods of using social networks in the process of learning English.Статья посвящена исследованию социальной сети ВКонтакте в качестве нового элемента информационно-коммуникационных технологий на занятиях английского языка в высшем учебном заведении