199,248 research outputs found

    Sakiko Nomura and Ango Sakaguchi. Ango. Bookshop M, 2017

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    UIDB/00657/2020 UIDP/00657/2020Recensão crítica de Sakiko Nomura e Ango Sakaguchi. Ango. Tokyo: Bookshop M, 2017.publishersversionpublishe

    Draft genome of the filarial nematode parasite Brugia malayi

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    Parasitic nematodes that cause elephantiasis and river blindness threaten hundreds of millions of people in the developing world. We have sequenced the approximately 90 megabase (Mb) genome of the human filarial parasite Brugia malayi and predict approximately 11,500 protein coding genes in 71 Mb of robustly assembled sequence. Comparative analysis with the free-living, model nematode Caenorhabditis elegans revealed that, despite these genes having maintained little conservation of local synteny during approximately 350 million years of evolution, they largely remain in linkage on chromosomal units. More than 100 conserved operons were identified. Analysis of the predicted proteome provides evidence for adaptations of B. malayi to niches in its human and vector hosts and insights into the molecular basis of a mutualistic relationship with its Wolbachia endosymbiont. These findings offer a foundation for rational drug design

    Multiple self-locking in the Kuramoto--Sakaguchi system with delay

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    We study the Kuramoto-Sakaguchi system of phase oscillators with a delayed mean-field coupling. By applying the theory of large delay to the corresponding Ott--Antonsen equation, we explain fully analytically the mechanisms for the appearance of multiple coexisting partially locked states. Closely above the onset of synchronization, these states emerge in the Eckhaus scenario: with increasing coupling, more and more partially locked states appear unstable from the incoherent state, and gain stability for larger coupling at a modulational stability boundary. The partially locked states with strongly detuned frequencies are shown to emerge subcritical and gain stability only after a fold and a series of Hopf bifurcations. We also discuss the role of the Sakaguchi phase lag parameter. For small delays, it determines, together with the delay time, the attraction or repulsion to the central frequency, which leads to supercritical or subcritical behavior, respectively. For large delay, the Sakaguchi parameter does not influence the global dynamical scenario

    Subordination Results on Subclasses Concerning Sakaguchi Functions

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    We derive some subordination results for the subclasses 𝒮(α,t), 𝒯(α,t), 𝒮0(α,t), and 𝒯0(α,t) of analytic functions concerning with Sakaguchi functions. Several corollaries and consequences of the main results are also considered

    Gaping in fish flesh

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    This publication contains 9 papers on work carried out in a research project supported by the Ministry of Education and Culture of Japan, the Department of Primary Industries, Queensland, Australia, and the Danish Institute for Fisheries Research. The papers cover (1) characterization of fish type-I collagen, (2) minor collagens in fish and their post-harvest changes in fish muscle, (3) collagen types in aquatic molluscs and crustaceans, (4) glycosaminglycan, (5) fibronectin, (6) the relationship of collagen to the softening of fish during refrigeration, (7) gaping in fish flesh, (8) textural change in fish flesh during cooking, and (9) textural changes in fish flesh due to sexual maturation. [Book Synopsis

    Sakaguchi type functions defined by balancing polynomials

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    summary:The class of Sakaguchi type functions defined by balancing polynomials has been introduced as a novel subclass of bi-univalent functions. The bounds for the Fekete-Szegö inequality and the initial coefficients a2\vert a_{2}\vert and a3\vert a_{3}\vert have also been estimated

    Existence, uniqueness, and regularity for the Kuramoto-Sakaguchi equation with unboundedly supported frequency distribution

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    The Kuramoto-Sakaguchi (or simply Kuramoto) equation is considered when the ''frequency distribution'', the frequency being an independent variable in the model equation, has an unbounded support. This equation is a nonlinear, Fokker-Planck-type, parabolic integro-differential equation, and arises from the statistical description of the dynamical behavior of populations of infinitely many nonlinearly coupled random oscillators. The space-integral term in the equation accounts for mean-field interaction occurring among these oscillators. Existence, uniqueness, and regularity of solutions are here established, taking suitable limits in the formulation of the previously studied problem, where the aforementioned support was assumed to be bounded

    Hankel and symmetric Toeplitz determinants for Sakaguchi starlike functions

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    In this paper, we consider the class of starlike functions with respect to symmetric points which are also known as Sakaguchi starlike functions. We de- termine best possible bounds on Zalcman conjecture | –  and generalized Zalcman conjecture |aman − am+n−1| for n = 2 and n = 4, m = 2, respectively for such functions. Further, we compute estimate on third order and fourth order Hankel determinants. As well, we also obtain estimates on third and fourth symmetric Toeplitz determinants. Mathematics Subject Classification (2010): 30C45, 30C80. Received 08 April 2022; Accepted 23 June 2022

    Initial Maclaurin coefficient estimates for λ\lambda -pseudo-starlike bi-univalent functions associated with Sakaguchi-type functions

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    summary:We introduce and study two certain classes of holomorphic and bi-univalent functions associating λ\lambda -pseudo-starlike functions with Sakaguchi-type functions. We determine upper bounds for the Taylor--Maclaurin coefficients a2\vert a_{2}\vert and a3\vert a_{3}\vert for functions belonging to these classes. Further we point out certain special cases for our results
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