Miracle-dz/UniFAR-FTUs huggingface dataset:
Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program. II. Cu, Zn, Sr, Y, Zr, Ba, Ce, Nd, and Eu

To understand the formation and evolution of the different stellar populations within our Galaxy it is essential to combine detailed kinematical and chemical information for large samples of stars. We derive chemical abundances of Cu, Zn, Sr, Y, Zr, Ba, Ce, Nd and Eu for a large sample of more than 1000 FGK dwarf stars with high-resolution ($R \sim$\,115000) and high-quality spectra from the HARPS-GTO program. The abundances are derived by a standard Local Thermodinamyc Equilibrium (LTE) analysis using measured Equivalent Widths (EWs) injected to the code MOOG and a grid of Kurucz ATLAS9 atmospheres. We find that thick disk stars are chemically disjunct for Zn and Eu and also show on average higher Zr but lower Ba and Y when compared to the thin disk stars. We also discovered that the previously identified high-$\alpha$ metal-rich population is also enhanced in Cu, Zn, Nd and Eu with respect to the thin disk but presents Ba and Y abundances lower on average, following the trend of thick disk stars towards higher metallities and further supporting the different chemical composition of this population. The ratio of heavy-s to light-s elements of thin disk stars presents the expected behaviour (increasing towards lower metallicities) and can be explained by a major contribution of low-mass AGB stars for s-process production at disk metallicities. However, the opposite trend found for thick disk stars suggests that intermediate-mass AGB stars played an important role in the enrichment of the gas from where these stars formed. Previous works in the literature also point to a possible primary production of light-s elements at low metallicities to explain this trend. Finally, we also find an enhancement of light-s elements in the thin disk at super solar metallicities which could be caused by the contribution of metal-rich AGB stars. (short version)
The Small Vorticity Nonlinear Critical Layer for Kelvin Modes on a Vortex

We consider in this paper the propagation of neutral modes along a vortex with velocity profile being the radial coordinate. In the linear stability theory governing such flows, the boundary in parameter space separating stable and unstable regions is usually comprised of modes that are singular at some value of r denoted rc, the critical point. The singularity can be dealt with by adding viscous and/or nonlinear effects within a thin critical layer centered on the critical point. At high Reynolds numbers, the case of most interest in applications, nonlinearity is essential, but it develops that viscosity, treated here as a small perturbation, still plays a subtle role. After first presenting the scaling for the general case, we formulate a nonlinear critical layer theory valid when the critical point occurs far enough from the center of the vortex so that the vorticity there is small. Solutions are found having no phase change across the critical layer thus permitting the existence of modes not possible in a linear theory. It is found that both the axial and azimuthal mean vorticity are different on either side of the critical layer as a result of the wave–mean flow interaction. A long wave analysis with O (1) vorticity leads to similar conclusions.
Baseline metal enrichment from Population III star formation in cosmological volume simulations

We utilize the hydrodynamic and N-body code {\small GIZMO} coupled with our newly developed sub-grid Population~III (Pop~III) Legacy model, designed specifically for cosmological volume simulations, to study the baseline metal enrichment from Pop~III star formation at $z>7$. In this idealized numerical experiment, we only consider Pop~III star formation. We find that our model Pop~III star formation rate density (SFRD), which peaks at $\sim 10^{-3}\ {\rm M_\odot yr^{-1} Mpc^{-1}}$ near $z\sim10$, agrees well with previous numerical studies and is consistent with the observed estimates for Pop~II SFRDs. The mean Pop~III metallicity rises smoothly from $z=25-7$, but does not reach the critical metallicity value, $Z_{\rm crit}=10^{-4}\ Z_\odot$, required for the Pop~III to Pop~II transition in star formation mode until $z\simeq7$. This suggests that, while individual halos can suppress in-situ Pop~III star formation, the external enrichment is insufficient to globally terminate Pop~III star formation. The maximum enrichment from Pop~III star formation in star forming dark matter halos is $Z\sim10^{-2}\ Z_\odot$, whereas the minimum found in externally enriched haloes is $Z\gtrsim10^{-7}\ Z_\odot$. Finally, mock observations of our simulated IGM enriched with Pop~III metals produce equivalent widths similar to observations of an extremely metal poor damped Lyman alpha (DLA) system at $z=7.04$, which is thought to be enriched by Pop~III star formation only.
Bayesian modelling of the latent structure of individual differences in the numerical size-congruity effect

ABSTRACT When people choose the physically larger of two numerals, they are often slower when relative physical size is incongruent with numerical magnitude. This size-congruity effect not only informs our understanding of mental representations of number, but also serves as an index for numerical ability in individuals. In this paper, we apply methods of Haaf and Rouder (2017) to examine the size-congruity effect through the lens of individual differences. We develop and compare hierarchical Bayesian mixed models with varying levels of constraint on the individual size-congruity effects. In three data sets, the winning model was one in which the size-congruity effect was constrained to be positive. This indicates that, at least in the context of a physical comparison task with Arabic numerals, everyone exhibits a positive size-congruity effect. We discuss these results in the context of measurement fidelity and theory-building in numerical cognition.
The Electrostatic Instability for Realistic Pair Distributions in Blazar/EBL Cascades

This work revisits the electrostatic instability for blazar-induced pair beams propagating through the intergalactic medium (IGM) using linear analysis and PIC simulations. We study the impact of the realistic distribution function of pairs resulting from the interaction of high-energy gamma-rays with the extragalactic background light. We present analytical and numerical calculations of the linear growth rate of the instability for the arbitrary orientation of wave vectors. Our results explicitly demonstrate that the finite angular spread of the beam dramatically affects the growth rate of the waves, leading to the fastest growth for wave vectors quasi-parallel to the beam direction and a growth rate at oblique directions that is only a factor of 2–4 smaller compared to the maximum. To study the nonlinear beam relaxation, we performed PIC simulations that take into account a realistic wide-energy distribution of beam particles. The parameters of the simulated beam-plasma system provide an adequate physical picture that can be extrapolated to realistic blazar-induced pairs. In our simulations, the beam looses only 1% of its energy, and we analytically estimate that the beam would lose its total energy over about 100 simulation times. An analytical scaling is then used to extrapolate the parameters of realistic blazar-induced pair beams. We find that they can dissipate their energy slightly faster by the electrostatic instability than through inverse-Compton scattering. The uncertainties arising from, e.g., details of the primary gamma-ray spectrum are too large to make firm statements for individual blazars, and an analysis based on their specific properties is required.
Analyzing the brainstem circuits for respiratory chemosensitivity in freely moving mice

Regulation of systemic PCO2 is a life-preserving homeostatic mechanism. In the medulla oblongata, the retrotrapezoid nucleus (RTN) and rostral medullary Raphe are proposed as CO2 chemosensory nuclei mediating adaptive respiratory changes. Hypercapnia also induces active expiration, an adaptive change thought to be controlled by the lateral parafacial region (pFL). Here, we use GCaMP6 expression and head-mounted mini-microscopes to image Ca2+ activity in these nuclei in awake adult mice during hypercapnia. Activity in the pFL supports its role as a homogenous neuronal population that drives active expiration. Our data show that chemosensory responses in the RTN and Raphe differ in their temporal characteristics and sensitivity to CO2, raising the possibility these nuclei act in a coordinated way to generate adaptive ventilatory responses to hypercapnia. Our analysis revises the understanding of chemosensory control in awake adult mouse and paves the way to understanding how breathing is coordinated with complex non-ventilatory behaviours.
A Measurement of the Broadband Spectrum of XTE J1118+480 with BeppoSAX and Its Astrophysical Implications

We report on results of a Target-of-Opportunity observation of the X-ray transient XTE J1118+480 performed on 2000 April 14-15 with the Narrow Field Instruments (0.1-200 keV) of the BeppoSAX satellite. The measured spectrum is a power law with a photon index of ~1.7 modified by an ultrasoft X-ray excess and a high-energy cutoff above ~100 keV. The soft excess is consistent with a blackbody with a temperature of ~40 eV and a low flux, while the cutoff power law is well fitted by thermal Comptonization in a plasma with an electron temperature of ~102 keV and an optical depth of order unity. Consistent with the weakness of the blackbody, Compton reflection is weak. Although the data are consistent with various geometries of the hot and cold phases of the accreting gas, we conclude that a hot accretion disk is the most plausible model. The Eddington ratio implied by recent estimates of the mass and the distance is ~10-3, which may indicate that advection is probably not the dominant cooling mechanism. We finally suggest that the reflecting medium has a low metallicity, consistent with the location of the system in the halo.
Cell-Free Double-Stranded DNA to DNase Ratio Predicts Outcome after Primary Survived Cardiac Arrest

(1) Double-stranded DNA (dsDNA) and deoxyribonuclease (DNase) as surrogate parameters for accumulating inflammatory hazards are insufficiently studied in resuscitation research. (2) Blood samples of 76 individuals after CA were analyzed 24 and 96 h after ICU admission. Plasma levels of dsDNA, interleukin-8, and monocyte chemoattractant protein-1 and activity of DNase were assessed along with baseline characteristics, intensive care measures, and outcome data. DsDNA/DNase ratio was used as main prognostication parameter. After calculating an optimal empirical cut-off for outcome prediction (death or Cerebral Performance Category ≥3 at 6 months), multivariable logistic regression was applied. (3) Using receiver operating characteristic (ROC) analysis, an area under the curve (AUC) of 0.65 (95% CI 0.50–0.79) was found for dsDNA/DNase after 24 h versus 0.83 (95% CI 0.73–0.92) after 96 h (p = 0.03). The empirical cut-off for dsDNA/DNase ratio after 96 h was 149.97 (Youden). DsDNA/DNase ratio was associated with unfavorable outcome at six months (aOR 1.006, 95% CI 1.0017–1.0094, p = 0.005). In multivariable analysis, the association of dsDNA/DNase ratio independently predicted outcome as a continuous variable (aOR 1.004, 95% CI 1.0004–1.0079, p = 0.029) after adjusting for potential confounders. (4) DsDNA/DNase ratio at 96 h demonstrates good predictive performance for estimating outcome after CA.
A Ground-based Near-ultraviolet Secondary Eclipse Observation of KELT-9b

KELT-9b is a recently discovered exoplanet with a 1.49 day orbit around a B9.5/A0-type star. The unparalleled levels of ultraviolet irradiation that it receives from its host star put KELT-9b in its own unique class of ultra-hot Jupiters, with an equilibrium temperature >4000 K. The high quantities of dissociated hydrogen and atomic metals present in the dayside atmosphere of KELT-9b bear more resemblance to a K-type star than a gas giant. We present a single observation of KELT-9b during its secondary eclipse, taken with the Wide Field Camera on the Isaac Newton Telescope (INT). This observation was taken in the U-band, a window particularly sensitive to Rayleigh scattering. We do not detect a secondary eclipse signal, but our 3σ upper limit of 181 ppm on the depth allows us to constrain the dayside temperature of KELT-9b at pressures of ∼30 mbar to 4995 K (3σ). Although we can place an observational constraint of Ag < 0.14, our models suggest that the actual value is considerably lower than this due to H− opacity. This places KELT-9b squarely in the albedo regime populated by its cooler cousins, almost all of which reflect very small components of the light incident on their daysides. This work demonstrates the ability of ground-based 2 m class telescopes like the INT to perform secondary eclipse studies in the near-ultraviolet, which have previously only been conducted from space-based facilities.
Taurine-Upregulated Gene 1 Attenuates Cerebral Angiogenesis following Ischemic Stroke in Rats

Objective Angiogenesis is one of the therapeutic targets of cerebral infarction. Long noncoding RNAs (lncRNAs) can regulate the pathological process of angiogenesis following ischemic stroke. Taurine-upregulated gene 1 (TUG1), an lncRNA, is correlated to ischemic stroke. We intended to determine the effect of TUG1 on angiogenesis following an ischemic stroke. Materials and Methods Middle cerebral artery occlusion (MCAO) was adopted to build a focal ischemic model of the rat brain, and pcDNA-TUG1 and miR-26a mimics were injected into rats. Neurological function was estimated through modified neurological severity scores. The volume of focal brain infarction was calculated through 2,3,5-triphenyltetrazolium chloride staining. The level of TUG1 and miR-26a was measured by PCR. The expression of vascular endothelial growth factor (VEGF) and CD31 was checked using immunohistochemistry and western blot. The correlation between miR-26a and TUG1 was verified through a luciferase reporter assay. Results TUG1 increased noticeably while miR-26a was markedly reduced in MCAO rats. Overexpression of miR-26a improved neurological function recovery and enhanced cerebral angiogenesis in MCAO rats. TUG1 overexpression aggravated neurological deficits and suppressed cerebral angiogenesis in MCAO rats. Bioinformatics analysis revealed that miR-26a was one of the predicted targets of TUG1. Furthermore, TUG1 combined with miR-26a to regulate angiogenesis. TUG1 overexpression antagonized the role of miR-26a in neurological recovery and angiogenesis in MCAO rats. Conclusions TUG1/miR-26a, which may act as a regulatory axis in angiogenesis following ischemic stroke, can be considered a potential target for cerebral infarction therapy.
Pruning and Water Saving Management Effects on Mango High-Density and Mature Orchards

Water is getting scarce and irrigation practices should become more efficient. Mango orchards require great quantities of water, and policies in developing countries are substituting surface gravity irrigation by pressurized systems. A commercial orchard having mature 25-year-old trees and a 10-year-old HD high-density section were irrigated with micro sprinklers using 100% ETc (crop evapotranspiration) and reduced deficit irrigation treatments of 75% and 50% ETc. Water soil measurements were made with EC-5 probes at 10 and 35 cm in depth to study the effect of the different irrigation treatments. After the 2020 harvest, mature trees were trimmed without achieving pruning severity greater than 1.3. Canopy volume, mango size, fruit yield and water-use efficiency WUE were analyzed during 2020 and 2021. Sporadic storms produced sprinkler watering problems as weeds proliferated within trees. A controller with a fuzzy algorithm optimized orchard management and saved water in trees without decreasing yield and fruit size. It was found that one year after mature trees were trimmed by taking away the larger internal branch, more light penetrated the canopy, increasing yield by 60%; pruning in HD trees presented a yield increase of 5.37%. WUE (water-use efficiency) also increased with pruning and its value increased to 87.6 when the fuzzy controller and the 50% DI treatments were used in mature trees. This value was 260% greater than the one obtained in pruned trees without the controller. HD trees presented a lower WUE and yield per hectare than mature trees.
Beyond the Concept of Lean Construction: A Prescriptive Rationalizing Model for Pipe Systems Manufacturing in a Petro-chemical Plant.

The economic importance of the Construction Industry (CI) is overshadowed not only by several difficulties but by the lack of innovation in this sector. Notwithstanding that construction and manufactures are part of Industrial Activity; CI does not share the systemic progress of the latter. This research con-firms the possibility in CI to increase its efficiency. The main purpose is to de-velop an operational system that facilitates the rational management of the industrial construction (IC) value chain. The lead researcher designed a software-in-terface link that allows the transformation of a traditional constructive process into a rational and systematic industrial one. As a result, all areas involved in the construction chain are harmoniously integrated; the whole decision-making process is facilitated by determining what is to be designed, purchased, procured and manufactured and its usefulness for previous and subsequent activities. Both project management and construction benefit from operational costs and inventory reduction as well as opportunity-cost mitigation. The software facilitates project simulation by ordering the isometric drawings of a piping system in an industrial project; timely information allows for more rational decisions about design, pur-chases, manufacturing, procurement and forecasting overall efficiency in the project. The construction value chain benefits from the application of Supply Chain Management (SCM) and Lean Construction techniques (LC), based on information management and automation. The investigation uses the method of Action Research (AR) for conducting both a professional and a subsequent academic project in the field. The availability of the computer program allowed the relevant simulations in the professional and academic projects. An integral IC process is modelled and simulated, as applied to a real-life pipe installation in a Mexican Petro-chemical plant. CI requires new operational practices so that con-structors can rationalize costs, improve quality and reduce delivery times by means of processes control. The proposed construction model can be used to achieve these goals. The study evidences the pertinence and potential benefits of introducing SCM and LC techniques in core areas of IC.
Disaggregating Ethnicity and National Origin: Educational Heterogeneity among Vietnamese and Chinese Americans across Immigrant Generations

Scholars often treat immigrants from the same country as a monolithic group, but intranational ethnicity is usually associated with distinctive premigration backgrounds and migration experiences and plays a role in shaping immigrant adjustment and incorporation in the host country. The authors use census data to distinguish ethnic Chinese from the Vietnamese national group to analyze educational heterogeneity across immigration generations. The results show that first-generation Chinese Vietnamese exhibit much lower levels of education than their Vietnamese counterparts, but this disparity vanishes by the 1.5 generation. The authors also find that both Vietnamese subgroups contribute to the second-generation convergence with Chinese Americans, but Chinese Vietnamese are able to overcome disadvantages more quickly and have slightly higher educational achievement than ethnic Vietnamese. Our case study illustrates how ethnicity and national origin can be disaggregated using nationally representative data and how this approach can provide unique insights into immigration studies in general.
Inaccuracy of Spatial Derivatives in Riemann Solver Simulations of Supersonic Turbulence

We examine the accuracy of spatial derivatives computed from numerical simulations of supersonic turbulence. Two sets of simulations, carried out using a finite-volume code that evolves the hydrodynamic equations with an approximate Riemann solver and a finite-difference code that solves the Navier–Stokes (N–S) equations, are tested against a number of criteria based on the continuity equation, including exact results at statistically steady state. We find that the spatial derivatives in the N–S runs are accurate and satisfy all the criteria. In particular, they satisfy our exact results that, at steady state, the average of the velocity divergence conditioned on the flow density and the conditional average of the advection of density both vanish at all density levels. On the other hand, the Riemann solver simulations fail all the tests that require accurate evaluation of spatial derivatives, resulting in apparent violation of the continuity equation, even if the solver enforces mass conservation. In particular, analysis of the Riemann simulations may lead to the incorrect conclusion that the work tends to preferentially convert kinetic energy into thermal energy, which is inconsistent with the exact result that the energy exchange by work is symmetric in barotropic supersonic turbulence at steady state. The inaccuracy of spatial derivatives is a general problem in the post-processing of simulations of supersonic turbulence with Riemann solvers. Solutions from such simulations must be used with caution in post-processing studies concerning the spatial gradients.
Antioxidative effect of metformin on valproic acid induced hepatoxicity in male rats

Metformin is 1,1-dimethylbiguanide hydrochloride, is the first-line therapy for type 2 diabetes. Additionally, several studies focused on the role of metformin in antioxidant activities for the treatment of hepatic disorders. The experimentally -based result on valproic acid's liver injury, a front-line medicine for the treatment of epilepsy, attracted a lot of interest. As a result, the effect of metformin on valproic acid-induced redox disturbances in rat hepatic tissue was studied. metformin at 250 mg/kg dose was administered via oral gavage for 30 days, and valproic acid at a dose of 400 mg/kg was administered by intraperitoneal route starting from the twenty-second day of the experiment, for eight days to induce hepatotoxicity. Treatment with metformin reduced valproic acid-enhancing alanine aminotransferase, aspartate aminotransferase activities. Tissue levels of malondialdehyde in the liver tissue of valproic acid-treated rats significantly increased (P-value < 0.05) whereas glutathione decreased. The coadministration of metformin with valproic acid significantly decreased the malondialdehyde levels and increased glutathione levels (P-value < 0.05). Finally, metformin protected rats from valproic acid-induced hepatotoxicity, improved antioxidant status, and reduced hepatic oxidative stress.