716 research outputs found

    Holographic Complexity and Fidelity Susceptibility as Holographic Information Dual to Different Volumes in AdS

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    The holographic complexity and fidelity susceptibility have been defined as new quantities dual to different volumes in AdS. In this paper, we will use these new proposals to calculate both of these quantities for a variety of interesting deformations of AdS. We obtain the holographic complexity and fidelity susceptibility for an AdS black hole, Janus solution and a solution with cylindrically symmetry, an inhomogeneous background and a hyperscaling violating background. It is observed that the holographic complexity depends on the size of the subsystem for all these solutions and the fidelity susceptibility does not have any such dependence.Comment: Slighly updated version. Accepted for publication in Phys. Letters

    General methods for designing single-mode planar photonic crystal waveguides in hexagonal lattice structures

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    We systematically investigate and compare general methods of designing single mode photonic crystal waveguides in a two-dimensional hexagonal lattice of air holes in a dielectric material. We apply the rather general methods to dielectric-core hexagonal lattice photonic crystals since they have not been widely explored before. We show that it is possible to obtain single mode guiding in a limited portion of the photonic bandgap of hexagonal lattice structures. We also compare the potentials of different photonic crystal lattices for designing single-mode waveguides and conclude that triangular lattice structures are the best choice

    L2-stability analysis of novel ETD scheme for Kuramoto–Sivashinsky equations

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    AbstractThe aim of this paper is to study the stability analysis of novel ETD scheme proposed by the authors based on spectral methods, the exponential time differencing and Taylor expansion. Stability issue of the proposed numerical scheme is related to an analysis of the stability of the corresponding ODE system for time marching approach. It is proved that the novel scheme is L2-stable in solving the Kuramoto–Sivashinsky model problems. The truncation error and the stability region for the novel scheme are provided. Comparisons with available literature are made

    Comparisons of competitive enzyme-linked immunosorbent assay and one step RT-PCR tests for the detection of Bluetongue virus in south west of Iran

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    Bluetongue is a noncontagious, arthropod-borne viral disease of both domestic and wild ruminants. Bluetongue virus (BTV) is the type of species of the genus Orbivirus within the family Reoviridae. BTV is endemic in some areas with cattle and wild ruminants serving as reservoirs for the virus. Clinical symptoms are often seen in sheep. There are several methods for the detection of Bluetongue virus, among them the molecular technique like RT-PCR is considered as the most sensitive and reliable one. The aim of this study was to comprise competitive enzyme-linked immunosorbent assay (C-ELISA) with one step RT-PCR test for the detection of BTV in sheep. A total of 770 blood samples were obtained from sheep (265 serum positive samples and 505 serum negative samples in C-ELISA). According to our data, out of the 265 serum positive samples in ELISA test, 234 were positive in RT-PCR assay whereas all serum negative samples were negative in RT-PCR experiment. According to the results, the PCR assay was more sensitive and reliable than ELISA technique for the diagnosis of Bluetongue virus.Key words: Bluetongue virus, C-ELISA, RT- PCR, Sheep, Iran

    Part-time versus full-time occlusion therapy for treatment of amblyopia: A meta-analysis

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    YesPurpose: To compare full-time occlusion (FTO) and part-time occlusion (PTO) therapy in the treatment of amblyopia, with the secondary aim of evaluating the minimum number of hours of part-time patching required for maximal effect from occlusion. Methods: A literature search was performed in PubMed, Scopus, Science Direct, Ovid, Web of Science and Cochrane library. Methodological quality of the literature was evaluated according to the Oxford Center for Evidence Based Medicine and modified Newcastle-Ottawa scale. Statistical analyses were performed using Comprehensive Meta-Analysis (version 2, Biostat Inc., USA). Results: The present meta-analysis included six studies (three randomized controlled trials [RCTs] and three non-RCTs). Pooled standardized difference in the mean changes in the visual acuity was 0.337 [lower and upper limits: 0.009, 0.683] higher in the FTO as compared to the PTO group; however, this difference was not statistically significant (P ¼ 0.056, Cochrane Q value ¼ 20.4 (P ¼ 0.001), I2 ¼ 75.49%). Egger's regression intercept was 5.46 (P ¼ 0.04). The pooled standardized difference in means of visual acuity changes was 1.097 [lower and upper limits: 0.68, 1.513] higher in the FTO arm (P < 0.001), and 0.7 [lower and upper limits: 0.315, 1.085] higher in the PTO arm (P < 0.001) compared to PTO less than two hours. Conclusions: This meta-analysis shows no statistically significant difference between PTO and FTO in treatment of amblyopia. However, our results suggest that the minimum effective PTO duration, to observe maximal improvement in visual acuity is six hours per day

    The effect of lavender essential oil and nanoemulsion on Trichomonas vaginalis in vitro

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    Background: Trichomonas vaginalis is the cause of trichomoniasis. Due to increased resistance and side effects of the drugs, the aim of this study was to assess an anti-trichomonias effect of lavender (Lavandula officinalis) essential oil and nanoemulsion on T. vaginalis in vitro. Materials and Methods: Lavender essential oil components were characterized by gas chromatography. To determine the cytotoxicity effects, the macrophage cell line J774.A.1 was used. Trichomonas vaginalis was isolated from vaginal secretions of the infected women and then cultured in the TYM complete medium and passaged for 10 days. The effect of essential oil and 1 lavender nanoemulsion in concentrations 10, 25, 50 and 100 &mu;g/mL in the 24-well plate were examined at 1, 2 and 3 hours as triplicate. Positive control was metronidazole (50 &mu;g/mL). The number of live and dead parasites was counted by trypan blue stain with a Neubauer slide. Results: The viability of the macrophages for lavender essential oil was 93.70 and for nanoemulsion was 90.90. Essential oil and nanoemulsion of lavender in concentration of 100 &mu;g/mL and during 3 hours showed 81.7 and 81.9 growth inhibitory, respectively. This difference was not statistically significant. Conclusion: Lavender essential oil and nanoemulsion has a desirable inhibitory effect on growth of T.vaginalis and can be a good choice for conducting therapeutic investigations regarding trichomonial infections
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