Institutions Of Higher Professional Education Research Articles

Селективное потенциометрическое определение серебра в оловянных и оловянно-свинцовых припоях с индикаторным модифицированным угольно-пастовым электродом

The carbon paste electrodes ( CPE ) in various degree modified by crosslinked N-2-sulfoehylchitosan with substitution degree of 0.5 are for the first time created. The CPE main electrochemical properties as potentiometric sensors for silver (I) determination (slope, detection limit, linear range of electrode function) are studied. It is shown that all studied CPE in ammonium acetate buffer solution have the super-Nernstian slopes. It is established that ion-selective electrode with a 10 % content of modifier has the lowest detection limit of copper (II) and silver (I), equal 3.2∙10 -7 mol/dm 3 and 6.3∙10 ‑8 mol/dm 3 , respectively. For this sensor a response time and potentiometric selectivity coefficients are defined. Negative logarithms of the selectivity coefficients defined with respect to nickel (II), cobalt (II), lead (II), copper (II), calcium, zinc, strontium, sodium and potassium ions, are equal 4.64, 4.40, 4.38, 4.11, 3.16, 3.06, 4.41, 3.04 and 3.04, respectively. The measurement technique of a silver mass content in solders tin and tin-lead by a potentiometric titration method with use as indicator CPE with the 10 % modifier content is developed. The characteristics of the measurement error are determined, certification is carried out. Keywords : potentiometric titration, modified carbon paste electrodes, silver, N-2-sulfoethylchitosan, tin and tin-lead solders. (Russian) DOI: http://dx.doi.org/10.15826/analitika.2014.18.3.008 L.K. Neudachina, Iu.S. Petrova, D.A. Rakov Federal State Autonomous Educational Institution of Higher Professional Education «Ural Federal University named after the first President of Russia B.N.Yeltsin» , Ekaterinburg, Russian Federation

Входная ионная оптика квадрупольных масс-спектрометров с индуктивно связанной плазмой. Часть 2. Асимметричные системы с параллельным смещением ионов

The published and other information about input ion optics of quadrupole mass spectrometer with inductively coupled plasma are integrated and systematized in this review. This part of review is devoted to asymmetrical optical systems with deflectors for parallel shift of the ion beam. There were revealed the reasons for choosing this optics based on its benefits. All variants of such optics were divided into two chronological groups – before and after their combination with multipole reaction-collision cells. The features of design and functioning of different types of cells and deflectors were discussed. The behavior of extracted plasma particles inside of different parts of optics were also considered. In particular, initial explanation of the positive effect in the soft mode extraction of ions introduced into the optics came under doubts and criticism, so alternative theory was offered instead. Main attention was paid to the сonstruction, positioning and properties of two the above-mentioned chronological groups of optical systems of different mass spectrometers: first (1983-2000 years), used in PMS 100/200/2000, HP 4500, Agilent 7500a/i/s, ICPM 8500, EMS 200 and TS Sola; and second (1999-2014 years), equipped with hexapole cells in Platform ICP/XS, PQExCell, XSeriesI/II, ICP-MS2000, or with octapole cells in model series of Agilent 7500c/cs/ce/cx/7700/8800/7900. There was considered conceptual novelty of triplemultipole mass spectrometer Agilent 8800 ICP-QQQ, which makes possible its outstanding efficiency in the elimination of spectral overlap, improvement the reliability of analytical results and lowering detection limits, confirmed by numerous authors when analyzing the set of difficult samples with complex composition.. Keywords: inductively coupled plasma mass-spectrometry, asymmetrical ion optics, deflectors, parallel (off-axis) shift of ions, multipole cells. (Russian) DOI: http://dx.doi.org/10.15826/analitika.2014.18.3.001 Surikov V.T. 1 and Pupyshev A.A. 2 1 Federal State Budget Institute of Science «Institute of Solid State Chemistry of Ural Branch of Russian Academy of Sciences» (ISSC UB RAS) , Ekaterinburg , Russian Federation 2 Federal State Autonomous Educational Institution of Higher Professional Education «Ural Federal University named after the first President of Russia B.N. Eltsin» (UrFU), Ekaterinburg, Russian Federation

Использование интенсивности рассеянного веществом рентгеновского излучения в практике рентгенофлуоресцентного анализа

In the present review the works devoted to the theory and use of scattered radiation in practice of X-ray fluorescent analysis are considered and critically discussed. The physical principles of dispersion of x-ray photons in substance are in detail considered, the approximating ratios describing dependences of differential coefficients of coherent and incoherent dispersion for various atomic numbers and wide range of energy and corners are studied. Results of calculations of differential sections of dispersion are compared with experimental results of authors of articles. The special attention is paid to the questions connected with abnormal dispersion and its influence on results of X-ray fluorescent analysis. The most part of considered articles is devoted to various techniques of use of scattered radiation. Expediency of use of intensity of scattered radiation in the regression equations and a way of theoretical amendments is shown. Questions of practical use of the perspective relation ‒ intensity of the fluorescent line of a defined element and a power function of intensity of dispersion are considered. The great interest is caused by works on non-standard use of scattered radiation: to determination of thickness of coverings and easy elements when measurement of fluorescent radiation or is strongly complicated, or in general it is impossible. In conclusion of the review conclusions are drawn and recommendations are made. Key words: X-ray fluorescent analysis, intensity of scattered radiation, differential coefficients of coherent and incoherent dispersion, differential section of dispersion, abnormal dispersion. (Russian) DOI: http://dx.doi.org/10.15826/analitika.2014.18.1.001 A.L. Tsvetyanskii and A.N. Eritenko Federal State Autonomous Educational Institution of Higher Professional Education "Southern Federal University" , Rostov-on-Don, Russian Federation

Оценка возможностей гамма-спектрометрического метода оперативного непрерывного контроля урана в растворах

The article describes aspects of gamma-spectrometric method for monitoring the percentage of natural uranium in technological solutions. A method for determining the minimum detectable activity for radiometric and spectrometric applications is proposed. The measurements and calculations results of the natural uranium minimum detectable activity in technological solutions for various gamma-ray spectrometers are given. Gamma-ray spectrometers with HpGe detectors may be used for the continuous monitoring of uranium in solution at any ratio natural uranium and 234 Th and a wide range of uranium concentrations from 1 mg/l to hundreds g/l. Gamma-ray spectrometers with scintillation detectors are suitable for solving this problem, if radioactive ratio between natural uranium and thorium is known and without other radionuclides. Multizone processing spectra algorithm and is considered and it is shown his preference for the processing of the spectra obtained for gamma spectrometers with scintillation detectors. As a comparison, the estimate of minimum detectable activity of uranium is given for gamma-ray spectrometer with LaBr 3 (Ce) detector in conditions similar to those measured for other gamma-ray spectrometers. It is shown that the spectrometers with LaBr 3 (Ce) crystals more relevant to the measurement of large activities such as technological solutions enriched uranium. Keywords : gamma spectrometry, natural uranium in solutions, minimum detectable activity. (Russian) DOI: http://dx.doi.org/10.15826/analitika.2014.18.1.003 E.I. Denisov, A.A. Pulin Federal State Autonomous Educational Institution of Higher Professional Education «Ural Federal University named after the first President of Russia B.N.Yeltsin» (UrFU) , Ekaterinburg, Russian Federation

Визуальное тест-определение Pb(II) с использованием индикаторной желатиновой пленки

A hardened gelatin gel deposited on a transparent polymeric matrix is of interest for the development of highly sensitive methods which combine concentration and subsequent determination of the analyte in the solid phase. For visual test for determination of lead (II) commercial photographic film with immobilized indikator bromopyrogallol red is proposed to use. The optimal conditions for the immobilization of the reagent and the metal complex in the film are determined. The composition and stability of the indicator reaction products are evaluated in solution and heterogeneous water / gelatin film. On the basis of these studies the technique of visual test determination of lead, based on the formation of complex compounds of Pb (II) c bromopyrogallol red in the medium hardened gelatin gel are found. Metrological characteristics of the proposed method of visual test determination of Pb (II) with the use of the indicator film are developed. Correctness of the methodology for determination of lead was tested on model solutions and real objects. Keywords: bromopyrogallol red, lead (II), the indicator gelatin film, immobilization, visual colorimetry. (Russian) DOI: http://dx.doi.org/10.15826/analitika.2014.18.3.009 P.V Anisimovich 1 , Z.A Temerdashev 1 , T.B Pochinok 1 , E.A. Reshetniak 2 , T.S. Smolenskaya 1 , O.Iu. Lomakina 1 1 Federal state budget educational institution of higher professional education "Kuban State University" , Krasnodar, Russian Federation 2 V.N. Karazin Kharkiv National University , Kharkiv, Ukraine

Interaction between Russian Business and Higher Education System through Employers’ Eyes. Prepared on the Basis of Information Obtained by Levada Center: A 2013 Survey

This paper continues the article on the relationship between higher school and business in Russia published in Journal of Educational Studies magazine last year (2013, no 1, pp. 174–182). Annual national surveys among CEOs conducted under the NRU HSE MEMO Project (Monitoring Education Markets and Organizations) allow to compare statistical data on cooperation between business and higher education institutions obtained in 2013 and in 2011. The surveys involve small, medium and large business CEOs in six key economic sectors: industry, communications (excluding postal services), construction, trade, transport, business services. The surveyors analyze the nature of interaction between businessmen and recent graduates from higher education institutions (how demanded young specialists are and how satisfied businessmen are with their professional qualifications) and collaboration of business with higher professional education institutions (actual levels and forms of collaboration, prospective levels and areas of collaboration for the nearest future). It has been found out that graduates are employed more and more often after the 2008–2009 recession. Graduates keep being most demanded in industry, communications and business services, while demand for them in trade is the lowest one. Company CEOs are mostly satisfied with professional qualifications of recent graduates; however, they complain graduates lack decision-making capacity, proactivity, planning and time-management skills, i. e. autonomy in work. Company CEOs also believe graduates lack communication skills (working in a team, establishing contact with customers). The paper provides results of a cross-country study comparing employer satisfaction with young specialists and company requirements for their professional qualifications in terms of higher education systems of Russia and Great Britain.

Функционализация поверхности целлюлозы тиосемикарбазидными группами с целью создания сорбента для концентрирования и определения тяжелых металлов в водах

A novel cellulose adsorbent bearing chemically immobilized thiosemicarbaside is synthesized. The adsorbent is used for the preconcentration of cobalt (II), mercury (II), and cadmium (II) followed by their X-ray fluorescence quantification in the concentrate. After approximation of experimental data on sorption capacity dependency on equilibrium concentration of element in the solution in coordinates of the Langmuir equation, the linear functions with correlation coefficient ≥ 0.99 were obtained. These functions we used to calculate maximum adsorption capacity (A мах ) and adsorption equilibrium constant. Using pseudo-first order kinetic equations for the approximation of experimental data on time-dependencies of sorbents capacity for Сd 2+ , Co 2+ , Hg 2+ the sorption rate constants were calculated. The possibility of determination of adsorbed Сd 2+ , Co 2+ , Hg 2 , by X-ray fluorescence in the sorbent phase was estimated for concentration phase under static conditions and pH =9 in case of the presence of all metals. Keywords : cellulose adsorbent, thiosemicarbazide, preconcentration (Russian) DOI: http://dx.doi.org/10.15826/analitika.2013.17.4.004 Dzh.N. Konshina, Z.A. Temerdashev, V.V. Konshin, E.I. Byshkina Federal State Educational Institution of Higher Professional Education «Kuban State University» , Krasnodar, Russian Federation

Флуориметрическое определение фенола в воздухе рабочей зоны с хроматомембранной жидкостной абсорбцией

This work is devoted to development scheme of continuous on-line control of the content of phenol in working area air using chromatomembrane liquid absorption and fluorimetric detection. Optimal rates of gas and liquid phases were determined and good convergence between continuous chromatomembrane liquid absorption variant of analysis and classic absorption into bubbler with chromatographic detection were shown. Completeness of absorption of phenol in a continuous chromatomembrane liquid absorption were determined not less than 98 %. Benefits of the developed scheme are simple automation, minimal time of operator parcipitation during analysis, no reagents using. It is possible to determine concentration of phenol in working area air in the range of 20 % of the maximum permissible concentration of up to 5 MPC with a frequency of 3-4 tests per hour. Keywords: chromatomembrane liquid absorption, automation of analysis, monitoring of the environment (Russian) DOI: http://dx.doi.org/10.15826/analitika.2013.17.4.016 A. L. Moskvin, A. N. Melnichenko Federal State Budgetary Educational Institution of Higher Professional Education «Saint Petersburg State University» , Saint-Petersburg, Russian Federation

Экстракционно-хроматографическое определение местных анестетиков в водных средах

The extraction novocaine, lidocaine anestezina are studied from aqueous media by individual organic solvents (aliphatic alcohols, normal and isomeric structure of C 3 – C 9 alkylacetates C 2 – C 5 ) and their mixtures using of different salting-out agents (chlorides, sulfates, sodium and ammonium). The coefficients of the distribution and the degree of extraction of anesthetics are calculated. It is shown that with increasing number of carbon atoms in the molecules of alcohols and esters their extractant possibility is decreased and alcohols isomers are less effective than normal ones. For the most complete extraction of the anesthetics the mixtures of alcohols with isomeric structure and alkyl acetates are used. Two and ternary-component mobile phase at chromatography in thin layer are studied for separation of local anesthetics in the concentrates, the mobility coefficients of substances are calculated. Quantitative evaluation are carried out by application of specialized software. The separation coefficients of anesthetics are calculated. The technique of determination of analytes in aqueous media is developed. The results of the extraction- chromatographic determination of novocaine, lidocaine and anaesthesin in aqueous media are proved by method «introduced – found». The range of detectable concentrations is 0.1 – 1 mkg/sm 3 , detection limit is 0.02 mkg/sm 3 . The relative error of determination is less than 10 %. Keywords : local anesthetics, extraction, chromatography in a thin layer (Russian) DOI: http://dx.doi.org/10.15826/analitika.2013.17.4.013 Ia . I . Korenman , T . V . Chibisova , P . T . Sukhanov , M.V. Zybenko Federal State Budget Educational Institution of Higher Professional Education «Voronezh State University of Engineering Technologies» (FSBEI HPE «VSUET») , Voronezh, Russian Federation

CONVENTIONAL RESPIRATORY REFLEX TO INCREASED RESPIRATORY RESISTANCE AS AN EXPERIMENTAL MODEL OF ADAPTIVE ACTIVITY

State Budget Educational Institution of Higher Professional Education “Ryazan State Medical University named after academician I.P. Pavlov” of the Ministry of Public Health and Social Development of the Russian Federation, Ryazan In the article it’s verified that conventional respiratory reflex to resistive load is the organism’s multicomponent reaction which can be used adequately as a model of adaptive human activity due to some methodical advantages: rapid reflex formation, relative strength, distinct quantitative evaluation criteria of components, relative simplicity of fulfillment of the methods. A step-like change in reinforcement of congenital respiratory reflex essentially rebuilts spatiotemporal structure of adaptive activity as well as its physiological cost.

THE ATTITUDE OF MEDICAL STAFF, INCLUDING THE SENIOR STUDENTS OF THE MEDICAL INSTITUTE, TO THE PROBLEM OF CHRONIC VIRAL HEPATITIS B AND C

The attitude of medical personnel, including the senior students of the medical Institute, to the problem of chronic viral hepatitis B and C. In the article the data of the sociological research performed among the medical personnel of various medical institutions of Ivanovo, and also students of V and VI courses of the State Budgetary Educational Institution of Higher Professional Education "The Ivanovo state medical academy" of Ministry of Health of Russia, to determine a position of medical workers on a problem of communication of chronic virus hepatitises (VH) B and C are presented. It became clear that the majority of health care workers have to provide care to VH patients in the conditions of shortage of knowledge and ignoring of necessary means of protection, and 18,5% of medical workers have a negative attitude to the VH patients, restricting them in necessary parenteral manipulations.

E-learning as innovation: Exploring innovativeness of the VET teachers’ community in Estonia

In this article, the acceptance of e-learning by teachers of vocational secondary and professional higher education institutions (hereafter: VET teachers) in Estonia has been analysed. The analysis is based on questionnaire study, carried out in 2007. The theoretical framework of the article has been inspired by Everett Rogers' innovation diffusion theory. It appears that there exists a statistically reliable difference between innovators and the remaining adopter categories among VET teachers. One can see that in the context of the VET teachers' working environment, a multi-dimensional innovation gap appears, embracing gaps in the actual use of e-learning tools, different types of skills and competences, access and support indicators. The model of innovativeness constructed shows that the competences are predictors of innovativeness. The development of competences related to e-learning (ICT competence, e-learning competence, pedagogical competence) and innovativeness are closely related. It will be argued that while one of the challenges for the developers of e-learning is to provide teachers with relevant continuous training as well as making efforts in developing existing support structures, we can assume that for different adopter categories among teachers different strategies and support schemes should be applied, as the values and attitudes of different groups vary.

POSSIBILITY OF ESTIMATIONOF OXIDIZING STRESS FOR PATIENTS BYDIABETES MELLITUS OF TYPE 2 BY METHODOF WEDGE-SHAPED DEHYDRATION

Public educational institution of higher professional education « Nizhegorodskaya state medical academy» federal agenstva on a health protection and social development, Nizhniy Novgorod Resume: The article is devoted to clarification of possibility of method of wedge-shaped dehydration in the complex estimation of expressed of oxidizing stress for patients by diabetes mellitus of type 2. It is conducted complex estimation of oxidizing stress at 37 patients diabetes 2 types, including the method of wedge-shaped dehydration. The conducted cross-correlation analysis testified to meaningful intercommunication between some indexes of morphological picture of the dried up drop of whey of blood and to the indexes characterizing oxidizing stress for patients by diabetes mellitus of type 2. A conclusion is done that using the method of wedge-shaped dehydration, it is possible complex to estimate expressed of oxidizing stress and his stage for a concrete patient.

THE EVOLUTION AND IMPACT OF PROGRAMME EVALUATION IN A NEW MEDICAL SCHOOL

ABSTRACT While the purpose, theory and method of evaluation of educational programmes are well‐documented, there is little published evidence on the actual evaluation of higher professional educational programmes and their outcomes. This paper outlines the background and development of programme evaluation in a new institution of higher professional education. It outlines current programme monitoring activities and their effects, and identifies the urgent and feasible tasks to be undertaken in the methodologically difficult and politically sensitive area of outcome evaluation.