23,257 research outputs found

    Особенности биологии Platanthera chlorantha (Cust.) Rchb. на территории Валдайской возвышенности

    Get PDF
    Исследованы ценопопуляции Platanthera chlorantha (Cust.) Rchb. в разных эколого-фитоценотических условиях Валдайской возвышенности (западная часть Тверской области

    Structure of dimension-six derivative interactions in pseudo Nambu-Goldstone N Higgs doublet models

    Full text link
    We derive the general structure of dimension-six derivative interactions in the N Higgs doublet models, where Higgs fields arise as pseudo Nambu-Goldstone modes of a strongly interacting sector. We show that there are several relations among the dimension-six operators, and therefore the number of independent operators decreases compared with models on which only SU(2)_L x U(1)_Y invariance is imposed. As an explicit example, we derive scattering amplitudes of longitudinal gauge bosons and Higgs bosons at high energy on models involving two Higgs doublets, and compare them with the amplitudes in the case of one Higgs doublet.Comment: 49 pages, 10 figure

    Recent Developments

    Get PDF

    Experimental And Numerical Study Of Sonic Wave Propagation In Freezing Sand And Silt

    Get PDF
    Thesis (Ph.D.) University of Alaska Fairbanks, 2009A numerical model for delineating the temperature-velocity relationship of freezing porous media and soil is developed in Matlab based on Leclaire's Biot-type three-phase theory. Leclaire's theory gives lower sonic velocities than the experimental results because it does not take into consideration the effect of the solid-ice frame when water is freezing. To take the solid-ice effective frame into account, the average bulk and shear moduli estimation are modified with a proposed procedure. The modification gives higher P-wave and S-wave velocities that fit experimental data well. A comprehensive suite of physical and acoustic laboratory experiments are conducted on artificial sands, sand-clay mixtures and Fairbanks silts to investigate the temperature-velocity relationship during the freezing process and the effects of grain size and fine clay content. A Multi-channel ultrasonic scanning system (MUSS) is designed, installed and programmed for the experimental computerized ultrasonic tomography (CUST) study. The inward and outward freezing process and freezing front development in Fairbanks silt samples are observed using computerized ultrasonic tomography (CUST) in the laboratory. The experiments generate sonic wave velocity and temperature distribution during the freezing process. The freezing front is clearly identified in the CUST as a function of time and temperature. Comprehensive numerical finite element method (FEM) simulations, which account for the conduction in porous media, the latent heat effect and the nonlinear thermal properties of soil, are performed on the inward and outward freezing process of Fairbanks silt based on the experimental conditions. In conjunction with the temperature-velocity model developed in the study, sonic wave velocity tomograms are generated. The results are comparable with those obtained by CUST. The study indicates that CUST is an effective method for studying freezing processes and has potential for indirect measurement of unfrozen water content variations in the soil without interfering with the freezing process

    Bay Shore Union Free School District and Bay Shore Custodial Association (2005)

    Get PDF

    PRZENIESIENIE KONCEPCJI MIĘDZYNARODOWEGO PRAWA KARNEGO NA JURYSDYKCJE KRAJOWE – PRZYPADEK LUDOBÓJSTWA

    Get PDF
    This article discusses preliminary findings of a study on the transposition of the legal concept of genocide into 131 national jurisdictions. The specificities of this transposition into national criminal systems, as well as those related to the international legal definition of genocide, are described in the first part. The communicative situations in which the concept of genocide has been transposed are then examined in order to show their scope and breadth, and to which extent they contribute to the transformation of the concept of genocide. Trends related to the object of transformation in the definition and their effect on meaning are subsequently outlined. The findings point to a situation where, despite having been the object of multiple consensus at the international level, the concept of genocide has been transformed by the vast array of domestic legal languages and legal systems into which it has been transposed and thereby reinforce the relation between the configuration of the language and law, and the difficulty of translation.Artykuł przybliża wstępne badania nad przeniesieniem prawnej koncepcji ludobójstwa na 113 jurysdykcji. W pierwszej części uwzględnia się uwarunkowania tego przeniesienia w systemach karnych jak i powiązań z międzynarodową definicją prawną ludobójstwa. Przeanalizowano sytuacje komunikacyjne, w których uwypuklił się koncept ludobójstwa by ukazać ich zakres i rozległość jak i określić, w jakim stopniu przyczyniły się one do przeformułowania koncepcji ludobójstwa. Ustalenia wskazują na sytuację, w której pomimo ludobójstwa na szczeblu międzynarodowym koncepcja ludobójstwa została przekształcona przez wachlarz krajowych języków prawnych i systemów prawnych, do których została transponowana, a tym samym wzmocniła relację między konfiguracją języka i prawa a trudnością tłumaczenia
    corecore