Predictions for future electron-ion colliders using the Balitsky--Kovchegov equation

This contribution presents the latest predictions for several QCD processes at low-x in the color dipole picture which are of interest for current hadron-hadron and future electron-hadron colliders. The predictions are derived using the solution to the Balitsky-Kovchegov equation for proton and nuclear targets. Two different approaches to the nuclear case are studied: a solution obtained using a newly proposed type of initial condition which represents the initial state of a given nucleus and the solutions based on an initial condition representing a proton coupled to a Glauber-Gribov prescription. The influence from the different energy evolutions of these two approaches are studied in the following photo-nuclear processes: inclusive and diffractive DIS, coherent production of a J/psi meson in ultra-peripheral collisions, and the deeply virtual Compton scattering. By comparison to the available data from HERA and the LHC and to the other models inspired by the Color Glass Condensate framework, it is demonstrated that the future measurements will be useful to discriminate among different approaches to saturation physics. The contribution was presented at the Hot Quarks 2022 - Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions, Dao House, Colorado, USA, October 11-17 2022.Comment: Intended to be submit as proceedings from the Hot Quarks 2022 conferenc

Continuous dialysis of citric acid: Solubility and diffusivity in Neosepta-AMH membrane

The transport of citric acid through an anion-exchange membrane Neosepta-AMH in a two-compartment continuous dialyzer has been investigated. The basic data obtained were completed by the measurement of the sorption isotherm. Mass transfer rate has been quantified by diffusivity of citric acid in the membrane, which has been determined from the acid concentrations in the streams entering and leaving the dialyzer. For that purpose, a set of ordinary differential equations describing the concentrations profiles in both the compartments of the dialyzer has been numerically solved in the connection with an optimizing procedure. In the mathematical model used, mass transfer resistances in liquid films on both sides of the membrane have been taken into account. All the experiments carried out at steady state (temperature 25 °C) revealed that first diffusivity of citric acid in the Neosepta-AMH membrane gradually increases with an increasing acid concentration until reaching a weak maximum at an acid concentration of c = 0.464 kmol m–3, then it slightly decreases. In the concentration range of citric acid in the membrane from 0 to 0.558 kmol m–3, diffusivity of acid was in the limits from 1.79 ×10–12 to 3.33 ×10–12 m2 s–1

COMPARATIVE ANALYSIS OF THEORY OF MIND TESTS IN FIRST EPISODE PSYCHOSIS PATIENTS

The research is based on comparative analysis of \u27Hinting Task\u27, \u27Faux Pas\u27, and \u27Reading the Mind in the Eyes\u27 tests sensitivity in detection of Theory of Mind deficits. The study included 20 subjects with schizophrenia and schizophrenia spectrum disorders with the first episode of psychosis. Every subject performed the three proposed tests. It was shown that success rate of the three tests differed significantly. The non-verbal test \u27Reading the Mind in the Eyes\u27 caused the most difficulties. The success rate percentage of this test performance correlated negatively with the severity of psychopathological symptoms evaluated according to the PANSS scale. Thus, \u27Reading the Mind in the Eyes\u27 test is the most sensitive out of the three to Theory of Mind deficits detection, which may be used for diagnostic purposes

Continuous dialysis of citric acid: Solubility and diffusivity in Neosepta-AMH membrane

The transport of citric acid through an anion-exchange membrane Neosepta-AMH in a two-compartment continuous dialyzer has been investigated. The basic data obtained were completed by the measurement of the sorption isotherm. Mass transfer rate has been quantified by diffusivity of citric acid in the membrane, which has been determined from the acid concentrations in the streams entering and leaving the dialyzer. For that purpose, a set of ordinary differential equations describing the concentrations profiles in both the compartments of the dialyzer has been numerically solved in the connection with an optimizing procedure. In the mathematical model used, mass transfer resistances in liquid films on both sides of the membrane have been taken into account. All the experiments carried out at steady state (temperature 25 °C) revealed that first diffusivity of citric acid in the Neosepta-AMH membrane gradually increases with an increasing acid concentration until reaching a weak maximum at an acid concentration of c = 0.464 kmol m–3, then it slightly decreases. In the concentration range of citric acid in the membrane from 0 to 0.558 kmol m–3, diffusivity of acid was in the limits from 1.79 ×10–12 to 3.33 ×10–12 m2 s–1

Diffractive deeply inelastic scattering in future electron-ion colliders

The impact of nonlinear effects in the diffractive observables that will be measured in future electron-ion collisions is investigated. We present, for the first time, the predictions for the diffractive structure function and reduced cross sections derived using the solution to the Balitsky--Kovchegov equation with the collinearly-improved kernel and including the impact-parameter dependence. We demonstrate that the contribution of the diffractive events is enhanced in nuclear collisions and that the study of the ratio between the nuclear and proton predictions will be useful to discriminate among different models of the dipole-target scattering amplitude and, consequently, will allow us to constrain the description of QCD dynamics in parton densities.Comment: 12 pages, 10 figure

IN SEARCH OF NEURAL MECHANISMS OF MIRROR NEURON DYSFUNCTION IN SCHIZOPHRENIA: RESTING STATE FUNCTIONAL CONNECTIVITY APPROACH

It has been repeatedly shown that schizophrenia patients have immense alterations in goal-directed behaviour, social cognition, and social interactions, cognitive abilities that are presumably driven by the mirror neurons system (MNS). However, the neural bases of these deficits still remain unclear. Along with the task-related fMRI and EEG research tapping into the mirror neuron system, the characteristics of the resting state activity in the particular areas that encompass mirror neurons might be of interest as they obviously determine the baseline of the neuronal activity. Using resting state fMRI, we investigated resting state functional connectivity (FC) in four predefined brain structures, ROIs (inferior frontal gyrus, superior parietal lobule, premotor cortex and superior temporal gyrus), known for their mirror neurons activity, in 12 patients with first psychotic episode and 12 matched healthy individuals. As a specific hypothesis, based on the knowledge of the anatomical inputs of thalamus to all preselected ROIs, we have investigated the FC between thalamus and the ROIs. Of all ROIs included, seed-to-voxel connectivity analysis revealed significantly decreased FC only in left posterior superior temporal gyrus (STG) and the areas in visual cortex and cerebellum in patients as compared to controls. Using ROI-to-ROI analysis (thalamus and selected ROIs), we have found an increased FC of STG and bilateral thalamus whereas the FC of these areas was decreased in controls. Our results suggest that: (1) schizophrenia patients exhibit FC of STG which corresponds to the previously reported changes of superior temporal gyrus in schizophrenia and might contribute to the disturbances of specific functions, such as emotional processing or spatial awareness; (2) as the thalamus plays a pivotal role in the sensory gating, providing the filtering of the redundant stimulation, the observed hyperconnectivity between the thalami and the STGs in patients with schizophrenia might explain the sequential overload with sensory inputs that leads to the abnormal cognitive processing

Phase transitions in higher-melting ionic liquids: Thermal storage materials or liquid crystals?

To assess the application potential of a material in thermal energy storage, the knowledge of their thermophysical properties is of key importance. Specifically, an efficient material has to show, among others, large enthalpies of phase change and a sufficiently large thermal conductivity. In this work, imidazolium-based ionic liquids (ILs) with long alkyl chain substituents 1-hexadecyl-3-methylimidazolium chloride and 1-hexadecyl-3-methylimidazolium saccharinate were studied in view of their possible use as phase-change materials. Differential scanning calorimetry (DSC) and the heat-leak modulus methods were used to determine the temperatures and the enthalpies of phase transitions in the studied ILs, enabling us to study the influence of the heating rates on the measured properties. Enthalpies of fusion near to or larger than 100 J·g-1 were found in the studied ionic liquids, making them promising candidates for thermal energy storage. Furthermore, peaks corresponding to possible liquid crystalline phases in the DSC traces of 1-hexadecyl-3-methylimidazolium saccharinate were observed. The measured properties are not only essential characteristics of a thermal storage material, temperatures and enthalpies of melting are necessary in thermodynamic description and modelling of solid-liquid phase behavior and thus in the possible utilization of the material in separation and crystallization processes. © Copyright 2018, AIDIC Servizi S.r.l