Miracle-dz/UniFAR-FTUs huggingface dataset:
Deceleration of C iv and Si iv Broad Absorption Lines in X-Ray Bright Quasar SDSS-J092345+512710

We report a synchronized kinematic shift of C iv and Si iv broad absorption lines (BAL) in a high-ionization, radio-loud, and X-ray bright quasar SDSS-J092345+512710 (at ∼ 2.1627). This quasar shows two broad absorption components (blue component at v ∼ 14,000 km s−1, and red component at v ∼ 4000 km s−1 with respect to the quasars systemic redshift). The absorption profiles of C iv and Si iv BAL of the blue component show a decrease in outflow velocity with an average deceleration rate of cm s−2 and cm s−2 over a rest-frame time span of 4.15 yr. We do not see any acceleration-like signature in the red component. This is consistent with dramatic variabilities usually seen at high velocities. During our monitoring period the quasar has shown no strong continuum variability. We suggest the observed variability could be related to the time dependent changes in disk wind parameters like launching radius, initial flow velocity, or mass outflow rate.
Significant uncertainties from calibrating overshooting with eclipsing binary systems

The precise measurement of the masses and radii of stars in eclipsing binary systems provides a window into uncertain processes in stellar evolution, especially mixing at convective boundaries. Recently, these data have been used to calibrate models of convective overshooting in the cores of main sequence stars. In this study we have used a small representative sample of eclipsing binary stars with 1.25 ≤ M/M⊙ < 4.2 to test how precisely this method can constrain the overshooting and whether the data support a universal stellar mass–overshooting relation. We do not recover the previously reported stellar mass dependence for the extent of overshooting and in each case we find there is a substantial amount of uncertainty, that is, the same binary pair can be matched by models with different amounts of overshooting. Models with a moderate overshooting parameter 0.013 ≤ fos ≤ 0.014 (using the scheme from Herwig et al. 1997, A&A, 324, L81) are consistent with all eight systems studied. Generally, a much larger range of f is suitable for individual systems. In the case of main sequence and early post-main sequence stars, large changes in the amount of overshooting have little effect on the radius and effective temperature, and therefore the method is of extremely limited utility.
Response and growth of some maize varieties (Zea mays L.) at various KNO3 concentrations

This study aimed to determine the interaction effects of several maize varieties and KNO3 concentrations on maize production. The research was carried out from December 2020 to April 2021 at the Indonesian Cereal Research Institute Facility, Bajeng District, Gowa Regency, South Sulawesi (5°18'21.5"S, 119°28'38.6"E). The study was designed using a split-plot experimental design, where the main plot was variety (V) which consisted of 4 varieties V1 (NASA-29), V2 (JH-37), V3 (BISI-2), and V4 (Pioner P-35). The subplots were KNO3 (K) concentration which consisted of 4 concentrations, namely Control (K0), 2.5 g.L–1 (K1), 5 g.L–1 (K2), and 7.5 g.L–1 (K3). Observational data were processed using ANOVA, and if there was a significant difference in the treatment, it was further tested with a 0.05 LSD follow-up test. The results showed that the JH-37 variety gave the best response, such as plant height, cob length, and production. The 7.5 g.L–1 KNO3 concentration gave the highest effect on all parameters of maize production; The interaction between the JH-37 variety with 7.5 g.L–1 KNO3 concentration gave the highest maize production; Parameters that have a positive correlation with maize productivity are expressed by plant height and weight of 1000 seeds.
A Spitzer IRS Spectral Atlas of Luminous 8 micron Sources in the Large Magellanic Cloud

We present an atlas of Spitzer Space Telescope Infrared Spectrograph (IRS) spectra of highly luminous, compact mid-infrared sources in the Large Magellanic Cloud. Sources were selected on the basis of infrared colors and 8 micron (MSX) fluxes indicative of highly evolved, intermediate- to high-mass stars with current or recent mass loss at large rates. We determine the chemistry of the circumstellar envelope from the mid-IR continuum and spectral features and classify the spectral types of the stars. In the sample of 60 sources, we find 21 Red Supergiants (RSGs), 16 C-rich Asymptotic Giant Branch (AGB) stars, 11 HII regions, 4 likely O-rich AGB stars, 4 Galactic O-rich AGB stars, 2 OH/IR stars, and 2 B[e] supergiants with peculiar IR spectra. We find that the overwhelming majority of the sample AGB stars (with typical IR luminosities ~1.0E4 L_sun) have C-rich envelopes, while the O-rich objects are predominantly luminous RSGs with L_IR ~ 1.0E5 L_sun. We determine mean bolometric corrections to the stellar K-band flux densities and find that for carbon stars, the bolometric corrections depend on the infrared color, whereas for RSGs, the bolometric correction is independent of IR color. Our results reveal that objects previously classified as PNe on the basis of IR colors are in fact compact HII regions with very red IRS spectra that include strong atomic recombination lines and PAH emission features. We demonstrate that the IRS spectral classes in our sample separate clearly in infrared color-color diagrams that use combinations of 2MASS data and synthetic IRAC/MIPS fluxes derived from the IRS spectra. On this basis, we suggest diagnostics to identify and classify, with high confidence levels, IR-luminous evolved stars and HII regions in nearby galaxies using Spitzer and near-infrared photometry.
Perioperative COVID-19 in cardiac surgery: A toxic coexistence

It has long been known that viral respiratory tract infections, particularly influenza, is associated with cardiovascular complications including acute myocardial infarction, heart failure, and myocarditis. As being another viral respiratory tract infection, it was not a surprise to realize that novel coronavirus 2019 disease (COVID-19) is also related to these complications, but it surpassed flu in that sense and associated with a great amount of cardiovascular complications such as myocardial injury, myocardial infarction, myocarditis, cardiac arrhythmias including sudden cardiac arrest, heart failure, cardiogenic shock, and thromboembolic events.
Perturbed redshifts from N-body simulations

In order to keep pace with the increasing data quality of astronomical surveys the observed source redshift has to be modeled beyond the well-known Doppler contribution. In this letter I want to examine the gauge issue that is often glossed over when one assigns a perturbed redshift to simulated data generated with a Newtonian N-body code. A careful analysis reveals the presence of a correction term that has so far been neglected. It is roughly proportional to the observed length scale divided by the Hubble scale and therefore suppressed inside the horizon. However, on gigaparsec scales it can be comparable to the gravitational redshift and hence amounts to an important relativistic effect.
Approximately Quantized Thermal Hall Effect of Chiral Liquids Coupled to Phonons

The recent observation of a half-integer quantized thermal Hall effect in $\alpha$-RuCl$_3$ is interpreted as a unique signature of a chiral spin liquid with a Majorana edge mode. A similar quantized thermal Hall effect is expected in chiral topological superconductors. The unavoidable presence of gapless acoustic phonons, however, implies that, in contrast to the quantized electrical conductivity, the thermal Hall conductivity $\kappa_xy$ is never exactly quantized in real materials. Here, we investigate how phonons affect the quantization of the thermal conductivity focusing on the edge theory. As an example we consider a Kitaev spin liquid gapped by an external magnetic field coupled to acoustic phonons. The coupling to phonons destroys the ballistic thermal transport of the edge mode completely, as energy can leak into the bulk, thus drastically modifying the edge-picture of the thermal Hall effect. Nevertheless, the thermal Hall conductivity remains approximately quantized and we argue, that the coupling to phonons to the edge mode is a necessary condition for the observation of the quantized thermal Hall effect. The strength of this edge coupling does, however, not affect the conductivity. We argue that for sufficiently clean systems the leading correction to the quantized thermal Hall effect, $\Delta \kappa_{xy}/T \sim \text{sign(B)} \, T^2$, arises from a intrinsic anomalous Hall effect of the acoustic phonons due to Berry phases imprinted by the chiral (spin) liquid in the bulk. This correction depends on the sign but not the amplitude of the external magnetic field.
Teachers as Researchers: Skills and Challenges in Action Research Making

The study aims to determine the level of competency of teachers as researchers as well as determine the factors that affect them in action research. Quantitative research, specifically the descriptive design, was used. It was conducted in the second congressional district of Quezon Province, Philippines, composed of 147 elementary and secondary teachers who have started writing action research. Relevant data were gathered through a validated survey questionnaire. The study was facilitated with confidentiality. Responses were treated through weighted arithmetic mean. The results revealed that 1) 32 out of 38 skills in action research writing landed in the lower bracket of the competent level. However, six skills landed on the less competent level. It has been noted that teacher-researchers are weak in choosing the tools for data analysis and interpretation, encoding quantitative and qualitative data, and interpreting results from the software. They were also less competent in publishing their completed action research. 2) Knowledge, attitude, and resources were the factors that affected teachers in their engagement in conducting action research. The respondents were limited to 147 retrieved questionnaires from the districts of Dolores, San Antonio, Candelaria, Sariaya, and Lucena. For further study, it was suggested that future researchers might come up with a larger scope and population. The findings of the research may be important to teachers and administrators since it will serve as a baseline for the status of action research-making in the district. The results should be the focus of capability-building activities of teachers.
The Caring Mission – Nursing Personnel’s Inner Driving Force in End-of-Life Care

Constantly facing human suffering and impending death can generate anxiety and insecurity in nursing personnel in end-of-life care. The aim of the study is to reveal nursing personnel’s inner driving force in end-of-life care. A phenomenological hermeneutical method was used to search for meaning in the narrative data collected in this study. The structural analysis resulted in four themes: The appeal in the patient’s vulnerability, The appeal in the patient’s joy, Facing one’s own existence in vulnerability, and Being at home with colleagues. Both vulnerability and joy motivated nursing personnel in caring. The care was often emotionally engaging and oscillated between grief and joy, which required a great deal from the nursing personnel both as professionals and fellow human beings. At the same time the emotionally engaging constituted an inner driving force, which gave them courage to do the best for the patients at the end of life.
SECOND-ORDER CONVEX ANALYSIS

The classical theorem of Alexandrov asserts that a finite convex function has a second-order Taylor expansion almost everywhere, even though its first partial derivatives may only exist almost everywhere. A theorem of Mignot provides a generic linearization of the subgradient mapping associated with such a function but leaves open the question of symmetry of the matrix that appears in this linearization. This paper clears up the gap between these results and goes on to a broader theory of second-order semi-derivatives of a convex function in relation to first-order semi-derivatives of its subgradient mapping. Connections with generalized derivatives based on approximations utilizing variational convergence are illuminated as well.
What Determines the Local Metallicity of Galaxies: Global Stellar Mass, Local Stellar Mass Surface Density, or Star Formation Rate?

Metallicity and its relationship with other galactic properties is a fundamental probe of the evolution of galaxies. In this work, we select about 750,000 star-forming spatial pixels from 1122 blue galaxies in the Mapping Nearby Galaxies at Apache Point Observatory survey to investigate the global stellar mass–local stellar mass surface density–gas-phase metallicity (M*–Σ*–Z) relation. At a fixed M*, the metallicity increases steeply with increasing Σ*. Similarly, at a fixed Σ*, the metallicity increases strongly with increasing M* at the low-mass end, while this trend becomes less obvious at the high-mass end. We find the metallicity to be more strongly correlated to Σ* than to M*. Furthermore, we construct a tight (0.07 dex scatter) M*–Σ*–Z relation, which reduces the scatter in the Σ*–Z relation by about 30% for galaxies with 7.8 < log(M*/M⊙) < 11.0, while the reduction of scatter is much weaker for high-mass galaxies. This result suggests that, especially for low-mass galaxies, the M*–Σ*–Z relation is largely more fundamental than the M*–Z and Σ*–Z relations, meaning that both M* and Σ* play important roles in shaping the local metallicity. We also find that the local metallicity is probably independent on the local star formation rate surface density at a fixed M* and Σ*. Our results are consistent with the scenario that the local metallicities in galaxies are shaped by the combination of the local stars formed in the history and the metal loss caused by galactic winds.
TeV Solar Gamma Rays From Cosmic-Ray Interactions

The Sun is a bright source of GeV gamma rays, due to cosmic rays interacting with solar matter and photons. Key aspects of the underlying processes remain mysterious. The emission in the TeV range, for which there are neither observational nor theoretical studies, could provide crucial clues. The new experiments HAWC (running) and LHAASO (planned) can look at the Sun with unprecedented sensitivity. In this paper, we predict the very high-energy (up to 1000 TeV) gamma-ray flux from the solar disk and halo, due to cosmic-ray hadrons and electrons ($e^++e^-$), respectively. We neglect solar magnetic effects, which is valid at TeV energies; at lower energies, this gives a theoretical lower bound on the disk flux and a theoretical upper bound on the halo flux. We show that the solar-halo gamma-ray flux allows the first test of the $\sim 5$--70 TeV cosmic-ray electron spectrum. Further, we show that HAWC can immediately make an even stronger test with nondirectional observations of cosmic-ray electrons. Together, these gamma-ray and electron studies will provide new insights about the local density of cosmic rays and their interactions with the Sun and its magnetic environment. These studies will also be an important input to tests of new physics, including dark matter.
On the Economics of Residential Solar PV Subsidies: Impact on Adoption and Savings

Ever since its advent, the adoption of renewable energy technology has received signiﬁcant government support. However, there is limited empirical evidence on the eﬀectiveness of subsidies that are used to promote renewable energy technology. Using a natural experimental setting where a solar PV subsidy is assigned randomly to applying households, we estimate the impact of subsidy provision on the adoption of solar PV, installed capacity, timing of the adoption and, ultimately, on electricity consumption. The results show that, within the group of households that applied for the subsidy, the provision of subsidy leads to a 14.4 percent increase in the probability of adopting solar PV, a 33.2 percent larger installation, and a 1 year faster adoption. However, examining the subsequent electricity consumption of the applicants, we report that the subsidy provision leads to a decrease in household electricity consumption of ”just” 8.1 percent, as compared to the rejected applicant group, implying a cost of carbon of more than €2,202 per ton CO 2 . The results of the paper show that the subsidy program mostly attracted the converted, although there might be spillover and other eﬀects that may reduce the cost to somewhat lower levels.
Rediscovery of the Sixth Star Cluster in the Fornax Dwarf Spheroidal Galaxy

Since first noticed by Shapley in 1939, a faint object coincident with the Fornax dwarf spheroidal has long been discussed as a possible sixth globular cluster (GC) system. However, debate has continued over whether this overdensity is a statistical artifact or a blended galaxy group. In this Letter we demonstrate, using deep DECam imaging data, that this object is well resolved into stars and is a bona fide star cluster. The stellar overdensity of this cluster is statistically significant at the level of ∼6–6. 7σ in several different photometric catalogs including Gaia. Therefore, it is highly unlikely to be caused by random fluctuation. We show that Fornax 6 is a star cluster with a peculiarly low surface brightness and irregular shape, which may indicate a strong tidal influence from its host galaxy. The Hess diagram of Fornax 6 is largely consistent with that of Fornax field stars, but it appears to be slightly bluer. However, it is still likely more metal-rich than most of the GCs in the system. Faint clusters like Fornax 6 that orbit and potentially get disrupted in the centers of dwarf galaxies can prove crucial for constraining the dark matter distribution in Milky Way satellites.
Measurement-device-independent randomness generation with arbitrary quantum states

Measurements of quantum systems can be used to generate classical data that is truly unpredictable for every observer. However, this true randomness needs to be discriminated from randomness due to ignorance or lack of control of the devices. We analyze the randomness gain of a measurement-device-independent setup, consisting of a well-characterized source of quantum states and a completely uncharacterized and untrusted detector. Our framework generalizes previous schemes as arbitrary input states and arbitrary measurements can be analyzed. Our method is used to suggest simple and realistic implementations that yield high randomness generation rates of more than one random bit per qubit for detectors of sufficient quality.
Pediatric Kidney Biopsies in Oman: A Retrospective Study.

Objectives To determine the spectrum of kidney diseases in Omani children < 13 years of age and to evaluate the complications following kidney biopsy. Methods This study retrospectively investigated the hospital data of children who underwent kidney biopsies from January 2014 to June 2019 at Royal Hospital, Muscat, Oman. Results The subjects comprised of 78 children with a median age of 8.0 years (range = 0-13 years). Histopathology showed minimal change disease in 15 (19.2%) children, lupus nephritis in 13 (16.7%), and focal segmental glomerulosclerosis in 13 (16.7%). The most common post-biopsy complications were pain that required analgesia (38; 49.4%) followed by gross hematuria (10; 13.0%). No patient required blood transfusion or surgical intervention. Conclusions Minimal change disease was the most common histopathological finding in this cohort of Omani children. The records did not mention any major complications following the renal biopsy procedure.
First record of Metopograpsus cannicci Innocenti, Schubart and Fratini, 2020 (Crustacea: Decapoda: Grapsidae) from India

Metopograpsus cannicci Innocenti, Schubart and Fratini, 2020 is distributed in the Red Sea, Iran, along the East African coast, Seychelles, Madagascar, and Mauritius. The present paper reports this species for the first time from India indicating its eastward extension.
Effectiveness of Digital Game Based Learning Strategy in Higher Educational Perspectives

Digital game-based learning strategy is now widely used in various fields such as education, marketing and advertising. This learning strategy has attracted great attention from scholars and practitioners in recent years due to its effectiveness in various educational fields. As more research studies favored the constructive impact of games on the learning process, more and more investigators are dedicated to developing digital educational games to enhance learning skills for 21st century requirements. The objectives of the current investigation were: to present a comprehensive and systematic review of the literature of previous studies on the effectiveness of digital game-based learning strategy in a higher educational context; to report the role of various adult learning theories in digital game-based learning strategy; to highlight some barriers and their solutions in digital game-based learning strategy. A total of 20 previous studies on digital game-based learning strategy in higher educational perspectives published from 2008-2021 were selected by inclusion and exclusion criteria for conducting this investigation. The results of the current investigation revealed that digital game-based learning strategy has deep effects on the learning skills of the learners in higher educational perspectives. The digital game-based learning strategy is a better option for the improvement of engagement of learners towards learning and critical thinking skills.
Kinematics of H2O masers in high-mass star forming regions

We have conducted multi-epoch EVN observations of the 22.2 GHz water masers towards four high-mass star forming regions (Sh 2-255 IR, IRAS 23139+5939, WB89-234, and OMC2). The (three) observing epochs span 6 months. In each region, the H2O maser emission likely originates close (within a few hundred AU) to a forming high-mass YSO. Several maser features (∼10) have been detected for each source and, for those features persistent over the three epochs, proper motions have been derived. The amplitudes of the proper motions are found to be larger than the range of variation of the line-of-sight velocities and in each of the observed sources the proper motion orientation seems to indicate expansion. The gas kinematics traced by the 22.2 GHz H2O masers is compatible with the shock-excited nature of water maser emission. Three different kinematic models (a spherical expanding shell, a Keplerian rotating disk and a conical outflow) were fitted to the 3-dimensional velocity field of the detected maser features. The results of these fits, together with the comparison of the VLBI maps with the highest-resolution images of the sources in several thermal tracers, suggest that the water maser features most likely trace the inner portion of the molecular outflows detected at much larger scales.