3,405 research outputs found

    Electroweak corrections to ZZ-boson hadroproduction at finite transverse momentum

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    We calculate the full one-loop electroweak radiative corrections, of O(α2αs){\cal O}(\alpha^2\alpha_s), to the cross section of single ZZ-boson inclusive hadroproduction at finite transverse momentum (pTp_T). This includes the O(α){\cal O}(\alpha) corrections to Z+jZ+j production, the O(αs){\cal O}(\alpha_s) corrections to Z+γZ+\gamma production, and certain QCD-electroweak interference contributions involving a single quark trace. We recover the QCD and purely weak corrections and study the QED corrections and the QCD-electroweak interference contributions for the first time. We also consider direct and resolved photoproduction in elastic and inelastic scattering. We present pTp_T and rapidity distributions for the experimental conditions at the Fermilab Tevatron and the CERN LHC and assess the significance of the various contributions.Comment: 31 pages, 11 figures; discussion enhanced, figures added, references added and updated; accepted for publication in Nucl. Phys.

    Effect of Component Composition of Pigment Complex on the Formation of Color of Rhubarb and Gooseberry

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    The objective of present study is to determine the influence of component composition of pigment complex on the formation of color of rhubarb and gooseberry that defines consumer properties of these plant products. We report comparative study of rhubarb of the botanical varieties Monarch, Linney, Krupnochereshkovyy, Ogrski, and of gooseberry of the varieties Malachite, Pavlovsky green, Green urozhainyy, Green butylochnyy, zoned in the eastern regions of Ukraine. To determine the content of pigment complex substances of rhubarb and gooseberry, we used methodology by V.F. Gavrilenko and L.M. Khandobina. The method of the International Commission on Illumination (ICI) was applied for quantitative characteristic of color.Results of research into qualitative and quantitative composition of pigment complex of berries of gooseberry and rhubarb stalks revealed that the main components are the chlorophylls whose overall content for different varieties of rhubarb is (3.7…4.5)∙10-3 %, for berries of gooseberry is (3.5…4.7)∙10-3 %. The color characteristics of the examined samples of gooseberry and rhubarb are correlated with the quantitative content of pigments in the raw materials and make it possible to determine the dominant tone (λd, nm) − green, color purity − green with shades of blue, brightness – green, light green, dark green, which coincide with the visual estimation of color.We show expediency of the application of the ICI XYZ method to characterize the color, which considerably facilitates the estimation of color when assessing the quality of food products

    Nonlinear response of superparamagnets with finite damping: an analytical approach

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    The strongly damping-dependent nonlinear dynamical response of classical superparamagnets is investigated by means of an analytical approach. Using rigorous balance equations for the spin occupation numbers a simple approximate expression is derived for the nonlinear susceptibility. The results are in good agreement with those obtained from the exact (continued-fraction) solution of the Fokker-Planck equation. The formula obtained could be of assistance in the modelling of the experimental data and the determination of the damping coefficient in superparamagnets.Comment: 7 PR pages, 2 figure

    Formation of Consumption Properties of Sweet Pepper (Capsicum Annuum L.) Sauce

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    The aim of the study is to form consumption properties of a green sweet pepper sauce with a balanced content of macro- and microelements. Due to the use of Xanthium strumarium and chitosan a new product has high organoleptic properties that attract a consumer and increase its competitiveness at the market.Sweet green pepper that relates to most valuable vegetable cultures as to food value and taste was chosen as a main component of a sauce. For giving it a necessary consistence and for decreasing a time of thermal processing, there was used chitosan. According to results of the conducted studies, it was established, that among studied types of chitosan, advantages as to forming a consistence belongs to food acid-soluble chitosan with particle sizes up to 0,5 mm in amount 0,5 %.For preserving the natural green color, pepper fruits were preliminarily processed in 1 % decoction of Xanthium strumarium at temperature 75ºС during 15 min. For increasing its food value, the recipe was added with spicy-aromatic vegetable raw materials: garlic, dill, parsley, celery.The sauce quality was formed by mathematical modeling using general criteria of optimization of organoleptic parameters. There were also determined specific criteria of optimization of the recipe composition taking into account their daily need. As a result of the conducted studies the composition of recipe components for the sauce was optimized: sweet pepper 80 %, garlic leaves – 5 %, parsley leaves,dill – 5 %, celery leaves – 5 %, salt – 1,5 %, sugar – 0,5 %, chitosan – 0,5 %.There were studied organoleptic parameters of the developed sauce, characterized by a pleasant bright-green color, homogenous paste-like consistence, pleasant taste and smell. The used stabilizing factors allowed to get the sauce with the increased content of essential factors of nutrition. They participate in the increase of protective forces of the organism, so allow to recommend them in prophylactic, child and dietary nutrition

    Театральность как явление культуры

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    This article discusses the notion of theatricality. Identifies its characteristic features and importance in the theatrical theories of the twentieth century. Marked development prospects in the future as a cultural phenomenon, reflecting the current specificity and influence on art educationВ данной статье рассматривается такое понятие как театральность. Выявляются его характерные особенности и значение в театральной теории двадцатого века. Отмечаются перспективы развития в дальнейшем как феномена культуры, отражающего современную специфику и влияющего на художественное образовани

    Fabrication and measurements of hybrid Nb/Al Josephson junctions and flux qubits with pi-shifters

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    We describe fabrication and testing of composite flux qubits combining Nb- and Al-based superconducting circuit technology. This hybrid approach to making qubits allows for employing pi-phase shifters fabricated using well-established Nb-based technology of superconductor-ferromagnet-superconductor Josephson junctions. The important feature here is to obtain high interface transparency between Nb and Al layers without degrading sub-micron shadow mask. We achieve this by in-situ Ar etching using e-beam gun. Shadow-evaporated Al/AlOx/Al Josephson junctions with Nb bias pads show the expected current-voltage characteristics with reproducible critical currents. Using this technique, we fabricated composite Nb/Al flux qubits with Nb/CuNi/Nb pi-shifters and measured their magnetic field response. The observed offset between the field responses of the qubits with and without pi-junction is attributed to the pi phase shift. The reported approach can be used for implementing a variety of hybrid Nb/Al superconducting quantum circuits.Comment: 9 pages, 5 figure

    Outlier detection and classification in sensor data streams for proactive decision support systems

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    A paper has a deal with the problem of quality assessment in sensor data streams accumulated by proactive decision support systems. The new problem is stated where outliers need to be detected and to be classified according to their nature of origin. There are two types of outliers defined; the first type is about misoperations of a system and the second type is caused by changes in the observed system behavior due to inner and external influences. The proposed method is based on the data-driven forecast approach to predict the values in the incoming data stream at the expected time. This method includes the forecasting model and the clustering model. The forecasting model predicts a value in the incoming data stream at the expected time to find the deviation between a real observed value and a predicted one. The clustering method is used for taxonomic classification of outliers. Constructive neural networks models (CoNNS) and evolving connectionists systems (ECS) are used for prediction of sensors data. There are two real world tasks are used as case studies. The maximal values of accuracy are 0.992 and 0.974, and F1 scores are 0.967 and 0.938, respectively, for the first and the second tasks. The conclusion contains findings how to apply the proposed method in proactive decision support systems

    Filled paper pulp sizing features in the presence of polyelectrolyte

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    It is shown that to reduce the size of the filler particles from 3–5 microns (natural) to 0.65–0.82 microns ({[CaCO3]m· nCO3 2– · (n – x)Na + } x– · xNa + ) allows for the filling process in geteroadagulation and penetration. To obtain high elevated paper with high-hydrophobic and strength properties it is advisable to sequentially introduced into the pulp slurry, calcium chloride and sodium carbonate to obtain superfine particles of filler (consumption10% of a. d. f.), then polyethylenimine (consumption 0.075% a. d. f.) and adhesive based on alkylketenedimer AKD (consumption 0.5% a. d. f.) demonstrating flocculating and sizing effect respectively

    Характеристика факторов повышения конкурентоспособности промышленных предприятий

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    В даній статті розглянуто проблему підвищення конкурентоспроможності промислових підприємств із врахуванням процесів глобалізації. Приділено увагу основним складовим конкурентоспроможності та ідентифікації чинників її підвищення.This paper considers the problem of increasing the competitiveness of industrial enterprises with regard to the processes of globalization. Attention is paid to the basic components of competitiveness and identify factors to improve it.В данной статье рассматривается проблема повышения конкурентоспособности промышленных предприятий с учетом процессов глобализации. Уделено внимание основным составляющим конкурентоспособности и идентификации факторов ее повышения

    Magnetic field processing to enhance critical current densities of MgB2 superconductors

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    Magnetic field of up to 12 T was applied during the sintering process of pure MgB2 and carbon nanotube (CNT) doped MgB2 wires. We have demonstrated that magnetic field processing results in grain refinement, homogeneity and significant enhancement in Jc(H) and Hirr. The Jc of pure MgB2 wire increased by up to a factor of 3 to 4 and CNT doped MgB2 by up to an order of magnitude in high field region respectively, compared to that of the non-field processed samples. Hirr for CNT doped sample reached 7.7 T at 20 K. Magnetic field processing reduces the resistivity in CNT doped MgB2, straightens the entangled CNT and improves the adherence between CNTs and MgB2 matrix. No crystalline alignment of MgB2 was observed. This method can be easily scalable for a continuous production and represents a new milestone in the development of MgB2 superconductors and related systems
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