1,205 research outputs found

    Development of laboratory information management system

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    Results of the actual direction of work of Scientific Research Institute of HV on development of the program complex LIS/LIMS «Chemist - analysts» for automatization of activity of analytical laboratories are presented. Functions of the complex and methodological principles of its development are considered, comparison with foreign analogues is carried out. The model of the industrial analytical control with use of concepts of a life cycle of a laboratory, technique and test is described

    Dynamic phase portrait: New possibilities of detecting changes in populations

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    This paper demonstrates the possibilities of detecting changes in populations of animals, based on the analysis of their dynamic phase portrait. This method allowed us to clarify the periodization of the process of naturalization of the Black Sea sprat (Clupeonella cultriventris) in the Rybinsk Reservoir and in detail describe the changes in the main dynamic characteristics of the population. On the example of zander (Sander lucioperca) in Lake Vozhe, the state was observed in which intra-population mechanisms activate which slow the increase in population (distribution of individuals from regions with high density). Use of this method allowed us to describe the new stable state of the population of grayling (Thymallus thymallus), which it entered as a result of increase in sport fishing. The data on time of presence of a population in equilibrium state allowed us to correctly unify the materials used for the analysis of changes in its age group

    Theory of magnetoelastic resonance in a mono-axial chiral helimagnet

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    We study magnetoelastic resonance phenomena in a mono-axial chiral helimagnet belonging to hexagonal crystal class. By computing the spectrum of coupled elastic wave and spin wave, it is demonstrated how hybridization occurs depending on their chirality. Specific features of the magnetoelastic resonance are discussed for the conical phase and the soliton lattice phase stabilized in the mono-axial chiral helimagnet. The former phase exhibits appreciable non-reciprocity of the spectrum, the latter is characterized by a multi-resonance behavior. We propose that the non-reciprocal spin wave around the forced-ferromagnetic state has potential capability to convert the linearly polarized elastic wave to circularly polarized one with the chirality opposite to the spin wave chirality.Comment: 12 pages, 5 figures, Accepted in Phys. Rev.

    Conductance oscillations and zero-bias anomaly in a single superconducting junction to a three-dimensional Bi2Te3Bi_2Te_3 topological insulator

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    We experimentally investigate Andreev transport through a single junction between an s-wave indium superconductor and a thick film of a three-dimensional Bi2Te3Bi_2Te_3 topological insulator. We study Bi2Te3Bi_2Te_3 samples with different bulk and surface characteristics, where the presence of a topological surface state is confirmed by direct ARPES measurements. All the junctions demonstrate Andreev transport within the superconducting gap. For junctions with transparent InBi2Te3In-Bi_2Te_3 interfaces we find a number of nearly periodic conductance oscillations, which are accompanied by zero-bias conductance anomaly. Both effects disappear above the superconducting transition or for resistive junctions. We propose a consistent interpretation of both effects as originating from proximity-induced superconducting correlations within the Bi2Te3Bi_2Te_3 topological surface state

    GaAs(111)A and B in hydrazine sulfide solutions : extreme polarity dependence of surface adsorption processes

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    Chemical bonds formed by hydrazine-sulfide treatment of GaAs(111) were studied by synchrotron photoemission spectroscopy. At the B surface, the top arsenic atoms are replaced by nitrogen atoms, while GaAs(111)A is covered by sulfur, also bonded to underlying gallium, despite the sulfide molar concentration being 103 times smaller than that of the hydrazine. This extreme dependence on surface polarity is explained by competitive adsorption processes of HS- and OH- anions and of hydrazine molecules, on Ga- adsorption sites, which have distinct configurations on the A and B surfaces

    Executive Summary: Young people, education, employment and ESOL

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    The report, ‘Young people, education, employment and ESOL’ reviewed 47 studies1 to examine how current ESOL provision2 meets the needs of young people aged 16-25 years who use English as an Additional Language (EAL)3, and who need time and support to develop their English language skills in order to progress in education, training and employment

    VHF scintillations, orientation of the anisotropy of F-region irregularities and direction of plasma convection in the polar cap

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    Scintillation data recorded at the polar cap station Barentsburg are shown to occasionally exhibit two or more peaks in the latitudinal profiles of the amplitude dispersion. Comparison with concurrent SuperDARN radar convection maps indicates that multiple peaks occur when Barentsburg is located within the area of strong changes in the plasma flow direction. When parameters of the ionospheric irregularities are inferred from the scintillation data, the orientation of the irregularity anisotropy in a plane perpendicular to the magnetic field is found to coincide well with the <I><b>E</b></I>×<I><B>B</B></I> flow direction, individually for each peak of the scintillation data. The differences were found to be mostly less than 20° for a data set comprised of 104 events. The conclusion is made that analysis of scintillation data allows one to infer the direction of plasma flow with a certain degree of detail

    Особливості формування інноваційної праці та інноваційної діяльності як складових державної стратегії в умовах розвитку економіки знань

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    Акцентується увага на: інноваційній праці та інноваційній діяльності як складових стратегічного державного пріоритету в умовах розвитку економіки знань; світовій та вітчизняній економіці ХХ ст. та її новітніх аспектах у ХХI ст.; інноваційній стратегії розвинених країн; мотиваційному механізмі інноваторів (авторське визначення ініціатора інновації) інфраструктурі інноваційної діяльності; небхідності відродження престижу науковця; інноваційному капіталі нації; необхідності створення Національного інноваційного інституту України.Акцентируется внимание на: инновационном труде и инновационной деятельности как составляющих стратегического государственного приоритета в условиях развития экономики знаний; мировой и отечественной экономике ХХ в. и ее новейших аспектах в ХХI в.; инновационной стратегии развитых стран; мотивационном механизме инноваторов (авторское определение инициатора инновации); инфраструктуре инновационной деятельности; необходимости возрождения престижа ученого; инновационном капитале нации; необходимости создания Национального инновационного института Украины.Attention of: innovative labour is accented and to innovative activity as strategic state priority in the conditions of development of economy of knowledge; to the world and home economy of ХХ of century and her the newest aspects in ХХI of century; to innovative strategy of the developed countries; motivative mechanism of innovativers (authorial determination of initiator of innovation) to the infrastructure of innovative activity; necessity of revival of prestige of scientist; to the innovative capital of nation; to the necessity of creation of the National innovative institute of Ukraine

    The stable state of aquatic assemblage

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    Проаналізовано багаторiчну динамiку різноманіття рибного населення близько 70 великих озер і водосховищ Росiї та країн СНД. Запропоновано метод відшукування стану рівноваги водних угруповань. Установлено, що індекс домінування рибного населення у стабільному стані найчастіше дорівнює 0,3. Виявлено фактори, якi визначають різноманіття рибного населення озер і водосховищ. Проанализирована многолетняя динамика разнообразия рыбного населения около 70 крупных озер и водохранилищ России и стран СНГ. Предложен метод поиска равновесного состояния водных сообществ. Установлено, что индекс доминирования рыбного населения в стабильном состоянии чаще равен 0,3. Выявлены факторы, определяющие разнообразие рыбного населения озер и водохранилищ.Long-term dynamics of fish assemblage diversity of more than 70 lakes and reservoirs of Russia and the CIS countries were analyzed. The method of revealing of stable state of aquatic assemblages is offered. It is established, that most often the index of domination of the stable fish assemblage is equal 0.3. The factors determining a diversity of the fish assemblage of lakes and reservoirs are revealed

    Orientation of the cross-field anisotropy of small-scale ionospheric irregularities and direction of plasma convection

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    The relationship between the orientation of the small-scale ionospheric irregularity anisotropy in a plane perpendicular to the geomagnetic field and the direction of plasma convection in the F region is investigated. The cross-field anisotropy of irregularities is obtained by fitting theoretical expectations for the amplitude scintillations of satellite radio signals to the actual measurements. Information on plasma convection was provided by the SuperDARN HF radars. Joint satellite/radar observations in both the auroral zone and the polar cap are considered. It is shown that the irregularity cross-field anisotropy agrees quite well with the direction of plasma convection with the best agreement for events with quasi-stationary convection patterns
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