Search results for "Light"
showing 10 items of 3575 documents
Forward light-by-light scattering and electromagnetic correction to hadronic vacuum polarization
2023
Lattice QCD calculations of the hadronic vacuum polarization (HVP) have reached a precision where the electromagnetic (e.m.) correction can no longer be neglected. This correction is both computationally challenging and hard to validate, as it leads to ultraviolet (UV) divergences and to sizeable infrared (IR) effects associated with the massless photon. While we precisely determine the UV divergence using the operator-product expansion, we propose to introduce a separation scale $\Lambda\sim400\;$MeV into the internal photon propagator, whereby the calculation splits into a short-distance part, regulated in the UV by the lattice and in the IR by the scale $\Lambda$, and a UV-finite long-di…
Heavy vs Light Load Single-Joint Exercise Performance with Different Rest Intervals
2017
Abstract The aim of the study was to compare the effect of three distinct rest period lengths between sets of upper body single-joint exercise with different load zones and volume designed for either endurance or hypertrophy (50% or 80% of 1-RM). Sixteen trained men (20.75 ± 2.54 years; 76.35 ± 5.03 kg; 176.75 ± 3.33 cm, 24.53 ± 1.47 kg/m2) performed a test and retest of 1-RM on non-consecutive days. Forty-eight hours after load testing, the participants were randomly assigned to six sessions consisting of four sets of the triceps pull-down, combining different intensities with distinct rest periods between sets. The shorter 1 minute rest promoted a significant reduction in the total repeti…
The rare isotope beams production at the Texas A&M university Cyclotron Institute
2013
The Cyclotron Institute at Texas A&M is currently configuring a scheme for the production of radioactive-ion beams that incorporates a light-ion guide and a heavy-ion guide coupled with an electron-cyclotron-resonance ion source constructed for charge-breeding. This scheme is part of an upgrade to the facility and is intended to produce radioactive beams suitable for injection into the K500 superconducting cyclotron. The current status of the project and details on the ion sources used in the project is presented. peerReviewed
Shape coexistence in neutron-deficient Hg isotopes studied via lifetime measurements in Hg-184,Hg-186 and two-state mixing calculations
2014
Abstract: The neutron-deficient mercury isotopes, 184 , 186 Hg, were studied with the recoil distance Doppler-shift method using the Gammasphere array and the K ̈ oln plunger device. The differential decay curve method was employed to determine the lifetimes of the yrast states in 184 , 186 Hg. An improvement on previously measured values of yrast states up to 8 + is presented as well as first values for the 9 3 state in 184 Hg and 10 + state in 186 Hg. B ( E 2) values are calculated and compared to a two-state mixing model which utilizes the variable moment of inertia model, allowing for extraction of spin-dependent mixing strengths and amplitudes. peerReviewed
Agrupaciones autónomas de personas ante el impuesto sobre el valor añadido
2021
This work carries out the delimitation of the exemption in the European V.A.T., of the benefits made to its members, by the autonomous groups of people, highlighting the distinctions made by the community case law, with particular attention to the subjective element of the exemption.
Ecofriendly Biopolymer-Based Nanocomposite Films with Improved Photo-Oxidative Resistance
2022
The interest towards high performance biopolymer-based materials increases continuously and, to guarantee appropriately industrial applications, the photo-oxidative resistance and stability of these materials must be adequately addressed. In this study, innovative biopolymer-based nanocomposites, i.e., Polyamide 11 (PA11), containing ad-hoc modified Layered Double Hydroxides (LDH), were successfully formulated and characterized. Particularly, LDH were considered carriers for hindered amine light stabilizing molecules, so two different hindered amine moieties (HALS1 and HALS2) were anchored on LDH layered internal structures and/or outer surfaces. The presence of HALS1 and HALS2 in LDH were …
Heroism as legitimation of Enlightenment values: Production strategies, changes and disagreements
2020
espanolEn tiempos de inseguridad politica, literatos y gobernantes apoyaron toda una serie de argumentos orientados a construir heroes civilizadores y sacrificados en beneficio de la patria, la sociedad y el «bien comun». Este articulo analiza las variadas estrategias y formas, siempre en constante proceso de definicion, con los que este heroismo ilustrado prolifero en la segunda mitad del siglo. Despues de pasar revista a las coordenadas historicas y a los debates en los que se desenvuelve la fabricacion de nuevos heroes, sin dejar de lado otro tipo de heroismo —heredado de la cultura humanista— me detendre especificamente en los conquistadores de America, sometidos a la critica de los int…
Heroism as legitimation of Enlightenment values: Production strategies, changes and disagreements
2020
During the eighteenth century's periods of political insecurity, writers and rulers supported a whole series of arguments aimed at constructing civilizing heroes who are sacrificed for the benefit of the country, society and the «common good.» This article analyses the different strategies and forms through which an enlightened heroism proliferated in the second half of the century and that were in a constant process of being defined. After reviewing the historical coordinates and the debates within which the creation of new heroes unfolded, and without neglecting another type of heroism—that inherited from humanist culture—I will specifically focus on the conquistadores of the Americas, wh…
Ocena współczesnej kultury Zachodu w nauczaniu Benedykta XVI (Josepha Ratzingera)
2015
The article consists of two parts. In the first one, the authors pointed out an argument in the social sciences concerning ability to reasonably use the „culture" concept in scientific discourse. In the second one, they analyzed opinions Benedict XVI ( Joseph Ratzinger) expressed about present condition of the Western culture. Views of this figure were selected to study due to recognizing significant influential role the Pope plays in the public sphere. In the opinion of Benedict XVI, today there are two cultures of the West that coexist: rational Christian culture and Enlightenment (neo‑Enlightenment) culture. There is a deep contradiction between them due to acknowledgment or rejection of…
Psychometric properties and validation of the Polish adaptation of the Light Triad Scale
2019
BackgroundThe aim of the study was to examine the development and structural validation of the Polish version of the Light Triad Scale, which measures three factors: Faith in Humanity, Humanism, and Kantianism. This tool reflects caring and beneficent orienta-tion toward other people, which is demonstrated in everyday behaviour.Participants and procedureThe participants included 400 people aged between 18 and 80 (M = 29.17, SD = 10.60). To measure psychometric properties and for validation of the scale, we used the Polish Dirty Dozen scale and International Personality Item Pool-Big Five Aspect Scales.ResultsConfirmatory factor analysis, reliability analysis using α and ω coefficients, and …