Nondiffusive suprathermal ion transport in simple magnetized toroidal plasmas

We investigate suprathermal ion dynamics in simple magnetized toroidal plasmas in the pres- ence of electrostatic turbulence driven by the ideal interchange instability. Turbulent fields from fluid simulations are used in the non-relativistic equation of ion motion to compute suprathermal tracer ion trajectories. Suprathermal ion dispersion starts with a brief ballistic phase, during which particles do not interact with the plasma, followed by a turbulence interaction phase. In this one simple system, we observe the entire spectrum of suprathermal ion dynamics, from subdiffusion to superdiffusion, depending on beam energy and turbulence amplitude. We estimate the duration of the ballistic phase and identify basic mechanisms during the interaction phase that determine the character of suprathermal ion dispersion upon the beam energy and turbulence fluctuation amplitude.Comment: 5 pages, 3 figures, accepted in PR

Dynamics of plasma blobs in a shear flow

The global dynamic of plasma blobs in a shear flow is investigated in a simple magnetized torus using the spatial Fourier harmonics (k-space) framework. Direct experimental evidence of a linear drift in k space of the density fluctuation energy synchronized with blob events is presented. During this drift, an increase of the fluctuation energy and a production of the kinetic energy associated with blobs are observed. The energy source of the blob is analyzed using an advection-dissipation-type equation that includes blob-flow exchange energy, linear drift in k space, nonlinear processes, and viscous dissipations. We show that blobs tap their energy from the dominant E B vertical background flow during the linear drift stage. The exchange of energy is unidirectional as there is no evidence that blobs return energy to the flow

The social costs of sounding gay: voice-based impressions of adoption applicants

In three studies (total N = 239) we examined the unexplored question of whether voice conveying sexual orientation elicits stigma and discrimination in the context of adoption. Studies 1 and 2 were conducted in Italy where same-sex adoption is illegal and controversial. Study 3 was conducted in the United Kingdom where same-sex adoption is legal and generally more accepted. The three studies show that listeners draw strong inferences from voice when judging hypothetical adoption seekers. Both Italian and British listeners judged gay-sounding speakers as warmer and as having better parenting skills, yet Italian participants consistently preferred straight over gay-sounding applicants, whereas British participants showed an opposite tendency, presumably reflecting the different normative context in the two countries. We conclude that vocal cues may have culturally distinct effects on judgment and decision making and that people with gay-sounding voices may face discrimination in adoption procedures in countries with antigay norms.info:eu-repo/semantics/acceptedVersio

Pathophysiology of Asthma and Chronic Obstuctive Pulmonary Disease (COPD)

“Asthma is a disease characterized by an increased responsiveness of the trachea and bronchi to various stimuli and manifested by a widespread narrowing of the airways that changes in severity either spontaneously or in response to therapy.” The airway narrowing is the end result of some combination of bronchial muscle contraction, tissue inflammation, mucosal edema, and luminal occlusion by cellular debris and thickened secretions. During the last decade, basic and applied research has shed light on the physiology of the above changes and has led to breakthroughs in therapy and the more rational use of older and newer therapeutic agents, both separately and together

Proteomic studies of marine organism

Comunicaciones a congreso

A robust method for measurement of fluctuation parallel wavenumber in laboratory plasmas

Measuring the parallel wavenumber is fundamental for the experimental characterization of electrostatic instabilities. It becomes particularly important in toroidal geometry, where spatial inhomogeneities and curvature can excite both drift instabilities, whose wavenumber parallel to the magnetic field is finite, and interchange instabilities, which typically have vanishing parallel wavenumber. We demonstrate that multipoint measurements can provide a robust method for the discrimination between the two cases

Turbulence driven particle transport in Texas Helimak

We analyze the turbulence driven particle transport in Texas Helimak (K. W. Gentle and Huang He, Plasma Sci. and Technology, 10, 284 (2008)), a toroidal plasma device with one-dimensional equilibrium with magnetic curvature and shear. Alterations on the radial electric field, through an external voltage bias, change spectral plasma characteristics inducing a dominant frequency for negative bias values and a broad band frequency spectrum for positive bias values. For negative biased plasma discharges, the transport is high where the waves propagate with phase velocities near the plasma flow velocity, an indication that the transport is strongly affected by a wave particle resonant interaction. On the other hand, for positive bias the plasma has a reversed shear flow and we observe that the transport is almost zero in the shearless radial region, an evidence of a transport barrier in this region.Comment: 8 pages, 11 figure

Who has a better auditory gaydar? Sexual orientation categorization by heterosexual and lesbian, gay and bisexual people

Lesbian, gay and bisexual (LGB) people are supposed to be better at gaydar than heterosexual. Across two studies we examined auditory gaydar performed by LGB and heterosexual listeners. In Study 1 participants (n = 127) listened to male and female speakers (n = 10) and judged their sexual orientation on a binary choice (gay/lesbian vs. heterosexual). In Study 2, participants (n = 192) judged speakers’ (n = 31) sexual orientation on a Kinsey-like scale (1 = exclusively heterosexual, 7 = exclusively gay/lesbian). Results showed gaydar judgments differences in relative terms that did not indicate an overall gaydar accuracy. Moreover, LGB participants were not better at gaydar than heterosexual participants but rather showed a shift in criterion when making auditory gaydar judgments, namely they report a weaker straight categorization bias. Overall, these findings contribute to the understanding of sexual orientation categorization among heterosexual majority and LGB minority groups.info:eu-repo/semantics/publishedVersio

Proteomic signature of non-alcoholic beverages via combinatorial peptide ligand libraries

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