Free amino acids of the blood and some organs in hypokinesia

The metabolic fund of amino acids of the blood and tissues of rats under hypokinesia was investigated. The content of free amino acids was determined for the liver, kidney, brain, and the skeletal and cardiac muscles after established periods of hypokinesia. It was found that the total content of free amino acids in the experimental animals was, on the average 19 percent lower than in the controls. The results of the quantity of individual compounds indicate that the level of some were reduced while others were increased. It was also found that there was an unequal content of individual amino acids in the different tissues

Coulomb Charging Effects in an Open Quantum Dot

Low-temperature transport properties of a lateral quantum dot formed by overlaying finger gates in a clean one-dimensional channel are investigated. Continuous and periodic oscillations superimposed upon ballistic conductance steps are observed, when the conductance G of the dot changes within a wide range 0<G<6e^2/h. Calculations of the electrostatics confirm that the measured periodic conductance oscillations correspond to successive change of the total charge of the dot by $e$. By modelling the transport it is shown that the progression of the Coulomb oscillations into the region G>2e^2/h may be due to suppression of inter-1D-subband scattering. Fully transmitted subbands contribute to coherent background of conductance, while sequential tunneling via weakly transmitted subbands leads to Coulomb charging of the dot.Comment: 12 pages, RevTeX, 15 eps figures included, submitted to Phys. Rev.

Precompact noncompact reflexive abelian groups

We present a series of examples of precompact, noncompact, reflexive topological Abelian groups. Some of them are pseudocompact or even countably compact, but we show that there exist precompact non-pseudocompact reflexive groups as well. It is also proved that every pseudocompact Abelian group is a quotient of a reflexive pseudocompact group with respect to a closed reflexive pseudocompact subgroup

Quantum corrections to the conductivity and Hall coefficient of a 2D electron gas in a dirty AlGaAs/GaAs/AlGaAs quantum well: transition from diffusive to ballistic regime

We report an experimental study of the quantum corrections to the longitudinal conductivity and the Hall coefficient of a low mobility, high density two-dimensional two-dimensional electron gas in a AlGaAs/GaAs/AlGaAs quantum well in a wide temperature range (1.5 K - 110 K). This temperature range covers both the diffusive and the ballistic interaction regimes for our samples. It was therefore possible to study the crossover region for the longitudinal conductivity and the Hall effect

ЧИ ВАРТО ВИКОРИСТОВУВАТИ НАУКОМЕТРИЧНИЙ m-КОЕФІЦІЄНТ НА ДОДАТОК ДО ІНДЕКСУ ГІРША ПРИ ОЦІНЦІ НАУКОВОГО ВКЛАДУ ВИКЛАДАЧІВ МЕДИЧНИХ УНІВЕРСИТЕТІВ?

The aim of the work – to evaluate the potential of using m-quotient to assess the scientific contribution of teachers and staff of medical universities in Ukraine.The main body. m-quotient is calculated based on h-index: to obtain the numerical values of m-index, it is necessary to divide Hirsch index by the number of years since the publication of the first article. In our opinion, m-index is valuable, since when calculating it, duration of active scientific careers of researchers is taken into account, which allows comparing the contribution of the experienced scientists and specialist-novices. In addition, determination of m-coefficient enables us to evaluate careers of researchers in the dynamics, taking into account the periods of decline and the rise of scientific activity, since in contrast to h-index, m-quotient may decrease when the publication of new papers is stopped.Conclusion. We believe that m-index can be used as a simple-to-calculate parameter and useful additional criterion for assessing the effectiveness of young scientists in medical universities in conjunction with other bibliometric indicators, namely h-index and, in particular, impact factors of journals where researchers publish their papers.Мета роботи – оцінити потенціал використання m-коефіцієнта для оцінки наукового вкладу викладачів та співробітників вищих медичних навчальних закладів України.Основна частина. m-коефіцієнт розраховують на підставі h-індексу: для отримання числового значення m-індексу необхідно поділити індекс Гірша на кількість років, що минули з моменту публікації першої статті. На нашу думку, цінність m-індексу полягає в урахуванні тривалості періоду активної наукової кар’єри вчених, що дозволяє порівняти вклад досвідченого вченого і фахівця-початківця. До того ж визначення m-коефіцієнта дозволяє оцінити кар’єру вченого в динаміці, беручи до уваги періоди спаду і підйому наукової активності, оскільки, на відміну від індексу Гірша, m-коефіцієнт може знижуватися при припиненні публікацій нових робіт.Висновок. Ми вважаємо, що m-індекс може використовуватись у якості простого для обчислення і корисного додаткового критерію оцінки ефективності молодого вченого у медичних університетах в поєднанні з іншими наукометричними показниками – індексом Гірша і, особливо, величинами імпакт-факторів журналів, у яких публікується науковий співробітник

Efficiency of local therapy with the use of a new preparation for oral care at periodontitis in the course of hyperpeptic gastritis after tobacco smoke intoxication

Periodontal diseases, arising against a background of stomach pathology at tobacco addiction remain an acute problem of modern dentistry. The aim of the work is an experimental study of efficiency of application of the new preparation for oral care during treatment of periodontitis simulated against a background of hyperpeptic gastritis under conditions of intoxication by tobacco smoke. At the first stage all experimental animals were divided into 4 groups: І - intact, II - with simulated periodontitis, III - with simulated periodontitis against a background of simulated hyperpeptic gastritis, IV - with simulated periodontitis against a background of hyperpeptic gastritis under conditions of tobacco smoking. Biochemical researches at periodontitis in rats were conducted for determination of influencing stomach pathology and tobacco smoke. On the II stage efficiency of local therapy was studied with the use of the new preparation for oral care and a comparator agent.Results: At experimental periodontitis against a background of hyperpeptic gastritis under conditions of smoking the considerable changes in periodontal tissues typical for the inflammatory process develop. The local therapy at rats with the use of the new preparation resulted in accelerating removing harmful influence of damaging factors and restoring the state of periodontal tissues, than in case of application of the comparator agent. The efficiency of the new preparation consists in normalizing influence on processes of lipid peroxidation, inflammation and activation of the protective systems of oral cavity during periodontitis which arises up against a background of hyperpeptic gastritis

ATTITUDINAL BARRIERS TOWARDS DISABLED PEOPLE IN SOCIETY

The inclusion of people with disabilities in social processes is an important task of modern society, due to the implementation of the provisions of the Convention on the equal rights of persons with disabilities. However, the achievement of this task is hampered by the presence of inclusive barriers in society, an important place of which is occupied by attitudinal barriers. The article presents the results of author’s sociological research (expert survey) on the example of Murmansk region of Russian Federation, which has revealed the most vulnerable category of persons with disabilities from the point of view of its perception by the society and raised the issue of the ways of forming of tolerant attitude of society and achievement of the social integration of citizens. The obtained data are important for the development of effective measures to eliminate attitudinal barriers, impeding the processes of social integration