Miracle-dz/UniFAR-FTUs huggingface dataset:
Perpendicular Diffusion Coefficient of Comic Rays: The Presence of Weak Adiabatic Focusing

The influence of adiabatic focusing on particle diffusion is an important topic in astrophysics and plasma physics. In the past, several authors have explored the influence of along-field adiabatic focusing on the parallel diffusion of charged energetic particles. In this paper, using the unified nonlinear transport theory developed by Shalchi and the method of He and Schlickeiser, we derive a new nonlinear perpendicular diffusion coefficient for a non-uniform background magnetic field. This formula demonstrates that the particle perpendicular diffusion coefficient is modified by along-field adiabatic focusing. For isotropic pitch-angle scattering and the weak adiabatic focusing limit, the derived perpendicular diffusion coefficient is independent of the sign of adiabatic focusing characteristic length. For the two-component model, we simplify the perpendicular diffusion coefficient up to the second order of the power series of the adiabatic focusing characteristic quantity. We find that the first-order modifying factor is equal to zero and that the sign of the second order is determined by the energy of the particles.
Risk Factors for the Diagnosis of Lung Cancer in Poland: A Large-Scale, Population-Based Case-Control Study

Objective: Lung cancer is one of the most common and deadly malignant neoplasms. Currently, it is one of the main causes of cancer deaths worldwide. The study aimed to identify and evaluate patient characteristics, demographic and lifestyle factors that are associated with lung cancer at diagnosis. Methods: The study included 400 patients diagnosed with lung cancer and 400 within the control group. The research was based on a clinical, direct, individual, structured, in-depth and focused interview. Assessment of activity and BMI was used according to WHO recommendations, as well as the expert system. Results: The mean age of the patients was 74.53 ± 7.86 years, while in the control group 59.5 (7.93). There was a strong positive relationship between the incidence of tuberculosis and chronic obstructive pulmonary disease and the risk of lung cancer (p <0.001). The risk of lung cancer was significant in the case of smoking 20 or more than 20 cigarettes a day and smoking for more than 20 years (p = 0.01). Conclusions: Active and passive smoking, are a leading risk factor for lung cancer, which shows that understanding of the long-term and fatal effects of smoking is still very low in society. No significant correlation has been found between lifestyle and risk of lung cancer. However, there was a strong positive correlation between tuberculosis and chronic obstructive pulmonary disease and the risk of lung cancer. Occupation is a predisposing factor for lung cancer occurrence.
Blazhko modulation in the infrared

We present first direct evidence of modulation in the $K$-band of Blazhko-type RR Lyrae stars that are identified by their secular modulations in the I-band data of OGLE-IV. A method has been developed to decompose the $K$-band light variation into two parts originating from the temperature and the radius changes using synthetic data of atmosphere-model grids. The amplitudes of the temperature and the radius variations derived from the method for non-Blazhko RRab stars are in very good agreement with the results of the Baade-Wesselink analysis of RRab stars in the M3 globular cluster confirming the applicability and correctness of the method. It has been found that the Blazhko modulation is primarily driven by the change in the temperature variation. The radius variation plays a marginal part, moreover it has an opposite sign as if the Blazhko effect was caused by the radii variations. This result reinforces the previous finding based on the Baade-Wesselink analysis of M3 (NGC 5272) RR Lyrae, that significant modulation of the radius variations can only be detected in radial-velocity measurements, which relies on spectral lines that form in the uppermost atmospheric layers. Our result gives the first insight into the energetics and dynamics of the Blazhko phenomenon, hence it puts strong constraints on its possible physical explanations.
Mutual information and the structure of entanglement in quantum field theory

I study the mutual information between spatial subsystems in a variety of scale invariant quantum field theories. While it is derived from the bare entanglement entropy, the mutual information offers a more refined probe of the entanglement structure of quantum field theories because it remains finite in the continuum limit. I argue that the mutual information has certain universal singularities that are a manifestation of the idea of "entanglement per scale". Moreover, I propose a method, based on an ansatz for higher dimensional twist operators, to compute the entanglement entropy, Renyi entropy, and mutual information in a general quantum field theory. The relevance of these results to the search for renormalization group monotones, to holographic duality, and to entanglement based simulation methods for many body systems are all discussed.
The formation and assembly history of the Milky Way revealed by its globular cluster population

We use the age–metallicity distribution of 96 Galactic globular clusters (GCs) to infer the formation and assembly history of the Milky Way (MW), culminating in the reconstruction of its merger tree. Based on a quantitative comparison of the Galactic GC population to the 25 cosmological zoom-in simulations of MW-mass galaxies in the E-MOSAICS project, which self-consistently model the formation and evolution of GC populations in a cosmological context, we find that the MW assembled quickly for its mass, reaching {25, 50} per cent of its present-day halo mass already at z = {3, 1.5} and half of its present-day stellar mass at z = 1.2. We reconstruct the MW’s merger tree from its GC age–metallicity distribution, inferring the number of mergers as a function of mass ratio and redshift. These statistics place the MW’s assembly rate among the 72th–94th percentile of the E-MOSAICS galaxies, whereas its integrated properties (e.g. number of mergers, halo concentration) match the median of the simulations. We conclude that the MW has experienced no major mergers (mass ratios >1:4) since z ∼ 4, sharpening previous limits of z ∼ 2. We identify three massive satellite progenitors and constrain their mass growth and enrichment histories. Two are proposed to correspond to Sagittarius (a few 108 M⊙) and the GCs formerly associated with Canis Major (⁠∼109M⊙). The third satellite has no known associated relic and was likely accreted between z = 0.6 and 1.3. We name this enigmatic galaxy Kraken and propose that it is the most massive satellite (⁠M ∗ ∼2×10 9 M ⊙) ever accreted by the MW. We predict that ∼40 per cent of the Galactic GCs formed ex situ (in galaxies with masses M* = 2 × 107–2×109M⊙), with 6 ± 1 being former nuclear clusters.
Effect Of Protein Ratio In Fattening Diet On Performance Production And Some Biochemical Characteristics Of Blood In Awassi Lambs

This study was conducted in the animal field of the College of Agriculture University of Tikrit for a period of 70days precession this period 14 day as adaptation starting from 8/10/2020 to 16/12/2020. Sixteen Awassi lambs were used, aged 5-6 months, with an average weight of 26.2 ± 0.3 kg. The experimental treatments were, first, the control 98% barley (farmer diet), the second 88% barley + 5% soybean meal+ 5% vegetable fat and the third 83% barley + 10% Soybean meal+ 5% fat and the fourth 78% barley + 15% soybeans+ 5% fat with addition to 1% salts and 1% vitamins and minerals for all treatment. The lambs were fed concentrate feed at 3% of live weight on a dry matter basis with 100 grams/day/lamb straw. The results showed that second, third and fourth treatments significantly (P≤0.05) improved final weight, average daily weight gain and feed conversion ratio compared to the first treatment, the third and fourth treatments (P≤0.05) increased in the daily weight gain, final weight and feed conversion efficiency compared to the second treatment. Significant (P≤0.05) differences were also found in some biochemical characteristics of blood, as increased in percentage of Triglycerides, blood urea and albumin in fourth treatment of lambs compared to ether experimental treatment, while no significant differences were found between experiment groups in proportion of glucose, creatinine, total protein, and the enzyme AST and ALT. note that all blood measurements of the experiment lambs were within normal limits.
A panchromatic spatially resolved study of the inner 500 pc of NGC 1052

Abstract We analyzed the inner 320 × 535 pc2 of the elliptical galaxy NGC 1052 with integral field spectroscopy, both in the optical and in the near-infrared (NIR). The stellar population analysis revealed a dominance of old stellar populations from the optical data, and an intermediate-age ring from NIR data. When combining optical+NIR data, optical results were favoured. The emission-line analysis revealed five kinematic components, where two of them are unresolved and probably associated with the active galactic nucleus (AGN), one is associated with large-scale shocks, one with the radio jets, and the last could be explained by either a bipolar outflow, rotation in an eccentric disc or a combination of a disc and large-scale gas bubbles. Our results also indicate that the emission within the galaxy is caused by a combination of shocks and photoionization by the AGN.
Measurements of Tropospheric Ice Clouds with a Ground-based CMB Polarization Experiment, POLARBEAR

The polarization of the atmosphere has been a long-standing concern for ground-based experiments targeting cosmic microwave background (CMB) polarization. Ice crystals in upper tropospheric clouds scatter thermal radiation from the ground and produce a horizontally polarized signal. We report a detailed analysis of the cloud signal using a ground-based CMB experiment, Polarbear, located at the Atacama desert in Chile and observing at 150 GHz. We observe horizontally polarized temporal increases of low-frequency fluctuations (“polarized bursts,” hereafter) of ≲0.1 K when clouds appear in a webcam monitoring the telescope and the sky. The hypothesis of no correlation between polarized bursts and clouds is rejected with >24σ statistical significance using three years of data. We consider many other possibilities including instrumental and environmental effects, and find no reasons other than clouds that can explain the data better. We also discuss the impact of the cloud polarization on future ground-based CMB polarization experiments.
FAINT POPULATION III SUPERNOVAE AS THE ORIGIN OF THE MOST IRON-POOR STARS

The most iron-poor stars in the Milky Way provide important observational clues to the astrophysical objects that enriched the primordial gas with heavy elements. Among them, the recently discovered iron-deficient star SMSS J031300.36−670839.3 shows a remarkable chemical composition with a non-detection of iron ([Fe/H] <−7.1) and large enhancement of carbon and magnesium relative to calcium. We investigate supernova yields of metal-free (Population III) stars to interpret the abundance pattern observed in this star. We report that the high [C/Ca] and [C/Mg] ratios and upper limits of other elemental abundances are well reproduced with the yields of core–collapse supernovae (which have normal kinetic energies of explosion E of E51 = E/1051 erg =1) and hypernovae (E51 ⩾ 10) of Population III 25 M☉ or 40 M☉ stars. The best-fit models assume that the explosions undergo extensive matter mixing and fallback, leaving behind a black hole remnant. In these models, Ca is produced by static/explosive O burning and incomplete Si burning in the Population III supernova/hypernova, in contrast to the suggestion that Ca is originated from the hot-CNO cycle during pre-supernova evolution. Chemical abundances of four carbon-rich iron-poor stars with [Fe/H] <−4.5, including SMSS J031300.36−670839.3, are consistently explained by faint supernova models with ejected masses of 56Ni less than 10−3M☉.
Infrared Space Observatory Observations of Far-Infrared Rotational Emission Lines of Water Vapor toward the Supergiant Star VY Canis Majoris

We report the detection of numerous far-infrared emission lines of water vapor toward the supergiant star VY Canis Majoris. A 29.5-45 μm grating scan of VY CMa, obtained using the Short-Wavelength Spectrometer (SWS) of the Infrared Space Observatory at a spectral resolving power λ/Δλ of ~2000, reveals at least 41 spectral features due to water vapor that together radiate a total luminosity of ~25 L☉. In addition to pure rotational transitions within the ground vibrational state, these features include rotational transitions within the (010) excited vibrational state. The spectrum also shows the 2Π(J=5/2)←2Π(J=3/2) OH feature near 34.6 μm in absorption. Additional SWS observations of VY CMa were carried out in the instrument's Fabry-Perot mode for three water transitions: the 725-616 line at 29.8367 μm, the 441-312 line at 31.7721 μm, and the 432-303 line at 40.6909 μm. The higher spectral resolving power λ/Δλ of approximately 30,000 thereby obtained permits the line profiles to be resolved spectrally for the first time and reveals the "P Cygni" profiles that are characteristic of emission from an outflowing envelope.
Accent Difference Makes No Difference to Phoneme Acquisition

ELT materials tend to use prestige variety speakers as models, an underlying assumption being that this is needed in order to acquire the phonology necessary to parse English speech (Rose & Galloway, 2019). Global Englishes Language Teaching (GELT) (Galloway & Rose, 2018) provides the potential for movement away from such ‘native speaker’ ideologies, but lacks empirical evidence. In this study, the use of GELT input in comparison with prestige varieties of English was investigated. Sixteen first-year L1 Japanese university students in an English Medium Instruction programme participated in a self-paced listening study via a learning management system (LMS). All participants were tested on their perception of the English vowels /æ/, /ʌ/, /ɜː/ and /ɔː/. After this pretest, they were separated into two groups: using edited TED talks, the experimental group (G) (N=8) watched videos of Global English varieties, and the control group (P) (N=8) watched videos of prestige English varieties. Both groups acquired losses, i.e., immediate posttest scores were mainly lower than pretest scores on vowel identification. Scores were predicted by the variation in interval between lessons and posttest, but not by the varieties of English used. This provides support for the view that GELT is as valid a language teaching approach as using prestige varieties.
A Comprehensive Spectroscopic and Photometric Analysis of DA and DB White Dwarfs from SDSS and Gaia

We present a detailed spectroscopic and photometric analysis of DA and DB white dwarfs drawn from the Sloan Digital Sky Survey with trigonometric parallax measurements available from the Gaia mission. The temperature and mass scales obtained from fits to ugriz photometry appear reasonable for both DA and DB stars, with almost identical mean masses of and 0.620 M⊙, respectively. The comparison with similar results obtained from spectroscopy reveals several problems with our model spectra for both pure hydrogen and pure helium compositions. In particular, we find that the spectroscopic temperatures of DA stars exceed the photometric values by ∼10% above Teff ∼ 14,000 K, while for DB white dwarfs, we observe large differences between photometric and spectroscopic masses below Teff ∼ 16,000 K. We attribute these discrepancies to the inaccurate treatment of Stark and van der Waals broadening in our model spectra, respectively. Despite these problems, the mean masses derived from spectroscopy— and 0.625 M⊙ for the DA and DB stars, respectively—agree extremely well with those obtained from photometry. Our analysis also reveals the presence of several unresolved double degenerate binaries, including DA+DA, DB+DB, DA+DB, and even DA+DC systems. Finally, we take advantage of the Gaia parallaxes to test the theoretical mass–radius relation for white dwarfs. We find that 65% of the white dwarfs are consistent within the 1σ confidence level with the predictions of the mass–radius relation, thus providing strong support to the theory of stellar degeneracy.
Evidence for a narrow N(1685) resonance in eta photoproduction off the nucleon

Revised analysis of Sigma beam asymmetry for eta photoproduction off the free proton from GRAAL is presented. New analysis reveals a narrow structure near W ~1.685 GeV. We describe this structure by the contribution of a narrow resonance with quantum numbers P_{11}, or P_{13}, or D_{13}. Being considered together with the recent observations of a bump-like structure at W~1.68 GeV in the quasi-free eta photoproduction off the neutron, this result provides an evidence for a narrow (Gamma < 25 MeV) N*(1685) resonance. Properties of this possible new nucleon state, namely the mass, the narrow width, and the much stronger photocoupling to the neutron, are similar to those predicted for the non-strange member of anti-decouplet of exotic baryons.
‘Do you have a future when you are 93?’ Frail older person’s perceptions about the future and end of life – a qualitative interview study in primary care

Abstract Objective To explore frail older persons’ perceptions of the future and the end of life. Design Qualitative content analysis of individual semi-structured interviews. Setting Nine primary health care centres in both small and middle-sized municipalities in Sweden that participated in the intervention project Proactive healthcare for frail elderly persons. Subjects/Patients The study includes 20 older persons (eight women and 12 men, aged 76–93 years). Main outcome measures Frail older persons’ perceptions of the future and end of life. Results The analysis uncovered two main categories: Dealing with the future and Approaching the end of life. Dealing with the future includes two subcategories: Plans and reflections and Distrust and delay. Approaching the end of life includes three subcategories: Practical issues, Worries and realism, and Keeping it away. Conclusion This study highlights the diverse ways older people perceive future and the end of life. The results make it possible to further understand the complex phenomenon of frail older persons’ perceptions on the future and the end of life. KEY POINTS The study found that older persons described their future as contradictory- with a broad spectrum of approaches, where some wanted to deal with these subjects and others wanted to ignore them. •Older persons that consciously planned for the future had tactics that often were related to goals that functioned as motivators to live longer. •Those who adopted a more passive approach did not think about what the future might hold in terms of losing autonomy and deteriorating health. •Older persons that approached end of life in a more proactive way wanted to plan practical arrangements around death but often found it hard to address this issue with relatives. •Those older persons that had a more passive approach to end of life preferred not to think about those issues, and some explicitly stated that they did not want to address the final period of life.
The Feasibility and Acceptability of an mHealth Conversational Agent Designed to Support HIV Self-testing in South Africa: Cross-sectional Study

Background HIV testing rates in sub-Saharan Africa remain below the targeted threshold, and primary care facilities struggle to provide adequate services. Innovative approaches that leverage digital technologies could improve HIV testing and access to treatment. Objective This study aimed to examine the feasibility and acceptability of Nolwazi_bot. It is an isiZulu-speaking conversational agent designed to support HIV self-testing (HIVST) in KwaZulu-Natal, South Africa. Methods Nolwazi_bot was designed with 4 different personalities that users could choose when selecting a counselor for their HIVST session. We recruited a convenience sample of 120 consenting adults and invited them to undertake an HIV self-test facilitated by the Nolwazi_bot. After testing, participants completed an interviewer-led posttest structured survey to assess their experience with the chatbot-supported HIVST. Results Participants (N=120) ranged in age from 18 to 47 years, with half of them being men (61/120, 50.8%). Of the 120 participants, 111 (92.5%) had tested with a human counselor more than once. Of the 120 participants, 45 (37.5%) chose to be counseled by the female Nolwazi_bot personality aged between 18 and 25 years. Approximately one-fifth (21/120, 17.5%) of the participants who underwent an HIV self-test guided by the chatbot tested positive. Most participants (95/120, 79.2%) indicated that their HIV testing experience with a chatbot was much better than that with a human counselor. Many participants (93/120, 77.5%) reported that they felt as if they were talking to a real person, stating that the response tone and word choice of Nolwazi_bot reminded them of how they speak in daily conversations. Conclusions The study provides insights into the potential of digital technology interventions to support HIVST in low-income and middle-income countries. Although we wait to see the full benefits of mobile health, technological interventions including conversational agents or chatbots provide us with an excellent opportunity to improve HIVST by addressing the barriers associated with clinic-based HIV testing.
The effective Tolman temperature in curved spacetimes

We review a recently proposed effective Tolman temperature and present its applications to various gravitational systems. In the Unruh state for the evaporating black holes, the free-fall energy density is found to be negative divergent at the horizon, which is in contrast to the conventional calculations performed in the Kruskal coordinates. We resolve this conflict by invoking that the Kruskcal coordinates could be no longer proper coordinates at the horizon. In the Hartle-Hawking-Israel state, despite the negative finite proper energy density at the horizon, the Tolman temperature is divergent there due to the infinite blueshift of the Hawking temperature. However, a consistent Stefan-Boltzmann law with the Hawking radiation shows that the effective Tolman temperature is eventually finite everywhere and the equivalence principle is surprisingly restored at the horizon. Then, we also show that the firewall necessarily emerges out of the Unruh vacuum, so that the Tolman temperature in the evaporating black hole is naturally divergent due to the infinitely blueshifted negative ingoing flux crossing the horizon, whereas the outgoing Hawking radiation characterized by the effective Tolman temperature indeed originates from the quantum atmosphere, not just at the horizon. So, the firewall and the atmosphere for the Hawking radiation turn out to be compatible, once we discard the fact that the Hawking radiation in the Unruh state originates from the infinitely blueshifted outgoing excitations at the horizon. Finally, as a cosmological application, the initial radiation energy density in warm inflation scenarios has been assumed to be finite when inflation starts. We successfully find the origin of the non-vanishing initial radiation energy density in the warm inflation by using the effective Tolman temperature.