Miracle-dz/UniFAR-FTUs huggingface dataset:
Mid-infrared variations of R Coronae Borealis stars

Mid-infrared photometry of R Coronae Borealis stars obtained from various satellites from IRAS to WISE has been utilized in studying the variations of the circumstellar dust's contributions to the spectral energy distribution of these stars. The variation of the fractional coverage (R) of dust clouds and their blackbody temperatures (T$_d$) have been used in trying to understand the dust cloud evolution over the three decades spanned by the satellite observations. In particular, it is shown that a prediction R $ \propto T_d^4$ developed in this paper is satisfied, especially by those stars for which a single collection of cloud dominates the IR fluxes. Correlations of R with photospheric abundance and luminosity of the stars are explored.
CONTROVERSY OF THE GRO J1655-40 BLACK HOLE MASS AND SPIN ESTIMATES AND ITS POSSIBLE SOLUTIONS

Estimates of the black hole mass M and the dimensionless spin a in the microquasar GRO J1655-40 implied by strong gravity effects related to the timing and spectral measurements are controversial, if the mass restriction determined by the dynamics related to independent optical measurements, Mopt = (5.4 ± 0.3) M⊙, is applied. The timing measurements of twin high-frequency (HF) quasiperiodic oscillations (QPOs) with the frequency ratio 3:2 and the simultaneously observed low-frequency (LF) QPO imply spin in the range if models based on the frequencies of geodesic epicyclic motion are used to fit the timing measurements, and the correlated creation of the twin HF QPOs and the LF QPO at a common radius is assumed. On the other hand, the spectral continuum method implies , and the Fe-line-profile method implies . This controversy can be cured if we abandon the assumption of the occurrence of the twin HF QPOs and the simultaneously observed LF QPO at a common radius. We demonstrate that the epicyclic resonance model of the twin HF QPOs is able to predict the spin in agreement with the Fe-profile method, but no model based on the geodesic epicyclic frequencies can be in agreement with the spectral continuum method. We also show that the non-geodesic string loop oscillation model of twin HF QPOs predicts spin a > 0.3 under the optical measurement limit on the black hole mass, which is in agreement with both the spectral continuum and Fe-profile methods.
Estimation of flavonoids and tannins extracted from medicinal plants on gentamicin-induced nephrotoxicity in local Iraqi rabbits

The present study aimed to find out the effect The study aimed to extract flavonoids and tannin from sumac, myrtle, and on domestic rabbits exposed to nephrotoxicity with gentamicin. the percentage of flavonoids recorded from myrtle and Sumac is 13.8%, and 12.7%, respectively. The percentage of tannin recorded from myrtle and Sumac is 15.9 %, and 12.7%, respectively. The study was conducted inside the body of the organism and nephrotoxicity was developed with gentamicin by injecting animals 80 mg/ml/day (IP) for two weeks, after which I was dosed orally with the Flavonoid extract of sumac and myrtle and tannin extract of sumac and myrtle for a month at a rate of 1 ml/kg/day. A significant increase in the group’s dose was found with gentamicin. An increase of 0.05 compared to the healthy control group. As well as a significant decrease of 0.05 for the groups treated with extracts compared to the control group for urea and creatinine. The total protein showed a significant increase of 0.05 for the group administered with gentamicin compared with the healthy control group and a significant decrease for the groups fed with extracts compared to the control group treated with gentamicin. As for albumin, a significant decrease was recorded for the group treated with gentamicin compared to the healthy control group by 0.05, and a significant increase for the groups treated with plant extracts compared with the control group treated with gentamicin. Uric acid showed a significant decrease in the groups treated with gentamicin compared with the healthy control group.
Validity of the Ratio of Pulmonary Artery Diameter to Aortic Diameter in the Diagnosis of Pulmonary Embolism in the Emergency Department

Background: Pulmonary thromboembolism can be easily diagnosed with computed tomography (CT) and pulmonary angiography (CTPA). However, diagnosis is difficult since a contrast agent cannot be used. Several criteria are recommended for the diagnosis of pulmonary embolism (PE) with non-enhanced CT. Objectives: The aim of this study is to investigate the value of the increase in the pulmonary artery diameter (PA-D) and the ratio of the pulmonary artery diameter / ascending aorta diameter (Ao-D) ratio (PA-D/Ao-D) in the diagnosis of PE in the emergency department (ED). Methods: The CTPA of patients diagnosed with PE (n=88) and a control group (n=89) were examined retrospectively. The main PA (MPA), right MPA (RMPA), left MPA (LMPA), and Ao-D were measured. The ratio of PA-D and Ao-D was calculated. Results: Mean age of participants of this study was 67.85±17.03 (Min:18, Max:98) in the PE group and 67.31±20.17 (Min:20, Max:91) in the control group (P=0.272). The PE diagnosis of RMPA, right segmental PA, and right subsegmental PA were found to be more than the left side. Moreover, the mean D-Dimer levels were found to be higher in the PE group (7.31±3.528 mcg/L), compared to the control group (1.52±1.042 mcg/L) (P=0.000). In the PE group, the mean Ao-D (35.14±4.55 mm) was larger, compared to the control group (34.97±5.28 mm); however, it was not statistically significant (P=0,828). In the PE group, the average MPA diameter (MPA-D) (30.45±4.77 mm) was larger than that of the control group (28.35±3.81 mm) and statistically significant (P=0,001). In addition, in the PE group, the average MPA-D/Ao-D ratio (0.87±0.15) was higher in comparison to the control group (0.82±0.13) (P=0,016). Conclusion: The increase in PA-D and PA-D/Ao-D ratio can be used in the diagnosis of PE when contrast agent cannot be given on CT or when thrombus cannot be seen on CT for the diagnosis of PE in the ED.
Multipurpose nanocomposite resist for free-standing transparent conductive thin films

Nanocomposites formed by silver nanowires (AgNWs) embedded in a polymer matrix are a convenient way to deposit thin films with electrical conductance and high transparency on different substrates. Nanocomposite resists containing AgNWs in a poly(methyl methacrylate) solution can be effectively used to produce conductive coatings in a straightforward manner. Here, we show that by adding a sacrificial layer of polyvinylpyrrolidone on a glass substrate, prior to the nanocomposite resist, it is possible to obtain large-area free-standing films of about 450 nm with electrical conductance and high transparency. The films can be transferred to different surfaces and materials including non-flat substrates. The formation of conductive stacks by piling two layers was also demonstrated. The optical, electrical, and structural properties of these free-standing films were studied obtaining films with transmittance T(%) = 78% at 550 nm, sheet resistance Rs = (670 ± 40) Ω sq−1 and surface roughness Ra = (50 ± 10) nm. We studied the strain resistance behavior of films transferred to polyethylene terephthalate sheets under bending tests finding a sensitivity of (0.51 ± 0.01) Ω deg−1 and a gradual increase in the resistance during cycling. In addition, thin flexible supports can be added by covering the nanocomposite film with polydimethylsiloxane (PDMS) prior to its release, enhancing the mechanical robustness and improving the manipulation of the films.
OGLE-ING THE MAGELLANIC SYSTEM: STELLAR POPULATIONS IN THE MAGELLANIC BRIDGE

We report the discovery of a young stellar bridge that forms a continuous connection between the Magellanic Clouds. This finding is based on number density maps for stellar populations found in data gathered by OGLE-IV that fully cover over 270 deg2 of the sky in the Magellanic Bridge area. This is the most extensive optical survey of this region to date. We find that the young population is present mainly in the western half of the MBR, which, together with the newly discovered young population in the eastern Bridge, form a continuous stream of stars connecting both galaxies along δ ∼ −73.5 deg. The young population distribution is clumped, with one of the major densities close to the SMC and the other fairly isolated and located approximately mid-way between the Clouds, which we call the OGLE island. These overdensities are well matched by H i surface density contours, although the newly found young population in the eastern Bridge is offset by ∼2 deg north from the highest H i density contour. We observe a continuity of red clump stars between the Magellanic Clouds which represent an intermediate-age population. Red clump stars are present mainly in the southern and central parts of the Magellanic Bridge, below its gaseous part, and their presence is reflected by a strong deviation from the radial density profiles of the two galaxies. This may indicate either a tidal stream of stars, or that the stellar halos of the two galaxies overlap. On the other hand, we do not observe such an overlap within an intermediate-age population represented by the top of the red giant branch and the asymptotic giant branch stars. We also see only minor mixing of the old populations of the Clouds in the southern part of the Bridge, represented by the lowest part of the red giant branch.
The Effect of Social Support on Clean and Healthy Life Behavior in Fishing Communities in Karampuang Village, Mamuju Regency

Conditions of Clean and Healthy Living Behavior (PHBS) in Indonesia still have many problems that require efforts to change unhealthy behaviors into healthy ones, one of which is through the Clean and Healthy Behavior program. With the demographic transition and disease epidemiology, limited information, knowledge, and socio-cultural and lifestyle changes related to behavior tend to be increasingly complex. IKS coverage in West Sulawesi Province is still low at only 14.5% as well as in Mamuju Regency at 13%. In Karampuang Village 86 (Healthy Families), 467 (Pre-Healthy Families), and 200 (Unhealthy Families). The research was conducted with the aim of determining the effect of social support on PHBS in fishing communities in Karampuang Village, Mamuju District, and Mamuju Regency. This research is quantitative research, analytical descriptive with a cross-sectional approach. The sample is women/housewives of productive age between 19-45 years and has children under five, with the main livelihood of family members being fishermen, with a total sample of 176 respondents. Methods of data collection are done by using a questionnaire. Furthermore, editing, coding, entry, cleaning, and tabulating data are carried out. Then the data is processed using a computer in the IBM SPSS Statistics 21 program. The results showed that Social Support affected clean and healthy living behavior with a p-value of 0.004. In conclusion, the process of achieving a clean and healthy life is strongly influenced by the support provided by the husband. Family support has an important role because the family can encourage both physically and mentally for mothers to carry out clean and healthy living behaviors. It is better if the social support factor is further improved, especially the support from the family in this case the husband as well as from the village government and the surrounding community
Revisiting the asymmetry between the exchange rate and domestic production in South Asian Economies: Evidence from Nonlinear ARDL Approach

: Many of the early studies that investigate the impact of exchange rate movements on domestic production report mixed findings in terms of the effect on economic growth. However, the majority of these studies had were limited in that they relied on a prior assumption of linear adjustment of the exchange rate fluctuations toward domestic output. We suspect that a prior assumption of linearity may mask the empirical results. We, therefore, bring nonlinearity into the adjustment process through the partial sum approach to the exchange rate by decomposing the exchange rate into depreciation and appreciation. We investigate both the symmetric and asymmetric effect of exchange rate changes on economic growth of the selected South Asian economies. Our results show significant evidence of the asymmetric effects of exchange rate changes on domestic production both in the short and long run in the case of all the selected economies.
The circular jump as a hydrodynamic white hole

Surface waves in classical fluids experience a rich array of black/white hole horizon effects. The dispersion relation depends on the characteristics of the fluid as well as on the fluid depth and the wavelength regime. We focus on the shallow-water regime, and discuss the experimental proof that the circular hydraulic jump marks the transition between a supercritical and a subcritical flow regime. This finally confirms a theoretical conjecture formulated by Lord Rayleigh nearly 100 years ago. It also confirms that the circular jump corresponds to the spontaneous formation of a hydrodynamic white hole, with interesting characteristics from the point of view of analogue gravity. We study the dispersive regime, mention some lessons about the trans-Planckian issue and describe possible directions for future work.
The effect of ownership structure on dividend policy of manufacturing companies

This study aims the impact of ownership structure on dividend on manufacturing companies listed on the Indonesia Stock Exchange and Malaysia Stock Exchange for the period 2015-2019. This study uses regression method as quantitative measurement level. The research used objects as many as 455 observations on the Indonesia Stock Exchange and 500 observations on the Malaysia Stock Exchange. The independent variables used in this research are foreign ownership, family ownership, and institutional ownership. The results of the study using observations on the Indonesia Stock Exchange found that family ownership and institutional ownership have a significant positive effect, while foreign ownership has an insignificant negative effect on dividend payout ratio. The results of the study using observations on the Malaysia Stock Exchange found that institutional ownership has a significant positive effect, while the rest has an insignificant positive on dividend payout ratio.
Leverage, investment and institutional environments: Evidence from emerging markets

We examine the link between investment and leverage internationally, bringing evidence from 22 emerging economies. We show a negative effect of leverage on investment that becomes stronger for low growth firms, in line with the overinvestment hypothesis. We further find that the monitoring effect of leverage on investment is stronger on firms operating in low regulatory quality and corrupt environments. Finally, we show that the monitoring effect induced by ownership concentration complements the monitoring effect of leverage on investment. Overall, our results suggest that the increased debt levels reported in emerging markets in recent years, act as a disciplinary tool against overinvestment, especially in countries with weak institutional environments.
The complex structure of the disk around HD 100546 - The inner few astronomical units

Disclosing the structure of disks surrounding Herbig AeBe stars is important to expand our understanding of the formation and early evolution of stars and planets. We aim at revealing the sub-AU disk structure around the 10 Myr old Herbig Be star HD100546 and at investigating the origin of its near and mid-infrared excess. We used AMBER/VLTI observations to resolve the K-band emission and to constrain the location and composition of the hot dust in the innermost disk. Combining AMBER observations with photometric and MIDI/VLTI measurements from the litterature, we revisit the disk geometry using a passive disk model based on 3D radiative transfer. We propose a model that includes a tenuous inner disk made of micron-sized dust grains, a gap, and a massive optically thick outer disk, that successfully reproduces the interferometric data and the SED. We locate the bulk of the K-band emission at ~0.26 AU. Assuming that this emission originates from silicate, we show that micron-sized grains are required to enable the dust to survive at such a distance from the star. As a consequence, more than 40% of the K-band flux is related to scattering, showing that direct thermal emission is not sufficient to explain the near-infrared excess. In the massive outer disk, large grains in the mid-plane are responsible for the mm emission while a surface layer of small grains allows the mid and far infrared excesses to be reproduced. Such vertical structure may be an evidence for sedimentation. The observations are consistent with a model that includes a gap until ~13 AU and a total dust mass of ~0.008 lunar mass inside it. These values together with the derived scale height (~2.5 AU) and temperature (~220 K) at the inner edge of the outer disk (r=13 AU), are consistent with recent CO observations.
Finite time adaptive learning for tracking control of constraint nonlinear systems via command filtered output feedback

This article is concerned with the adaptive learning finite‐time output feedback control design for a class of high‐order nonlinear systems involving full state constraints. First, a state observer is designed to estimate the unmeasurable states and the radial basis function neural networks are used to identify unknown functions in the system. Then based on the state observer, we develop an adaptive learning finite‐time output feedback controller by combining the command filtered technique and error‐tracking method. In addition, the “explosion of complexity” problem can be avoided and the filtered errors caused by dynamic surface control can be compensated by the newly proposed command filter control. By constructing a novel log‐type barrier Lyapunov function, it can be guaranteed that the full state constraints are not violated and all the variables in the controlled systems are bounded in finite time. Finally, two simulation examples are carried out to demonstrate the effectiveness of the proposed algorithm.
Molecular mechanisms of myocardial damage in the hypertensive rats and hypertensive rats with metabolic disorders (diabetes mellitus, atherosclerosis)

Introduction: Despite the success which was achieved in the treatment of arterial hypertension, for optimization of the treatment, it is necessary to study the pathogenesis of primary arterial hypertension and target organ damage on the molecular level. Materials and methods: Our team studied the molecular mechanisms of myocardial damage during arterial hypertension and metabolic disorders. We used the spontaneously hypertensive rats (SHR) as an experimental model, and, additionally, we modeled diabetes mellitus and atherosclerosis in these rats. Results and discussion: Our study obtained evidence of a much higher level of the energy imbalance in the cardiomyocytes and more intensive production of reactive oxygen species in the SHRs with diabetes mellitus and atherosclerosis compared with the healthy animals and the animals with only hypertension. The indicated defections create an environment for further cellular damage – mitochondrial dysfunction, depletion in the thiol-disulfide system, and formation of highly reactive NO products. At the same time, we have noticed a higher activity of the Hsp70 in the hypertensive groups compared with the normotensive animals. The source of these deviations is in the formation of mitochondrial dysfunction of cardiocytes, the cause of which is oxidative modification of the protein structures of mitochondria under conditions of activation of oxidative stress reactions, insufficiency of mPT pores, and impaired mitochondrial chaperone function. The presented data give reason to believe that mitochondrial dysfunction, which develops against the background of deficient HSP70, is an integral aspect of arterial hypertension, contributes to its aggravation, and triggers a cascade of molecular and biochemical mechanisms of myocardial damage. These mechanisms include disturbances in the L-arginine-NO-synthase-NO system, production of mitochondrial iNOS oxygen radicals, neutralization of the vasorelaxant effect of NO and its transformation into an active participant in nitrous stress due to reduced intermediates of the thiol-disulfide system. The question of cause-and-effect relationships of oxidative stress remains open for discussion. Conclusion: We envisage that studies in this direction may lead to a better insight into a pathogenetic therapy of essential hypertension, diabetes mellitus, and atherosclerosis. Graphical abstract:
Who are the Indians? Reconceptualizing Indigenous Identity, Resistance, and the Role of Social Science in Latin America

STRATEGIES FOR SURVIVAL: THE PSYCHOLOGY OF CULTURAL RESILIENCE IN ETHNIC MINORITIES. By Peter Elsass. (New York: New York University Press, 1992. Pp. 263. $35.00 cloth.) PORTALS OF POWER: SHAMANISM IN SOUTH AMERICA. Edited by E. Jean Matteson Langdon and Gerhard Baer. (Albuquerque: University of New Mexico Press, 1992. Pp. 350. $35.00 cloth.) 'TAMBO: LIFE IN AN ANDEAN VILLAGE. By Julia Meyerson. (Austin: University of Texas Press, 1990. Pp. 265. $30.00 cloth, $14.95 paper.) I SPENT MY LIFE IN THE MINES: THE STORY OF JUAN ROJAS, BOLIVIAN TIN MINER. By June Nash. (New York: Columbia University Press, 1992. Pp. 390. $49.00 cloth, $18.50 paper.) DOMINATION AND CULTURAL RESISTANCE: ALITHORITY AND POWER AMONG AN ANDEAN PEOPLE. By Roger Neil Rasnake. (Durham, N.C.: Duke University Press, 1988. Pp. 321. $39.95 cloth.) NATION-STATES AND INDIANS IN LATIN AMERICA. Edited by Greg Urban and Joel Sherzer. (Austin: University of Texas Press, 1991. Pp. 355. $3Z50 cloth, $14.95 paper.)
Systematics in the gamma-ray burst Hubble diagram

Thanks to their enormous energy release which allows to detect them up to very high redshift, Gamma Rays Bursts (GRBs) have recently attracted a lot of interest to probe the Hubble diagram (HD) deep into the matter dominated era and hence complement Type Ia Supernoave (SNeIa). However, lacking a local GRBs sample, calibrating the scaling relations proposed as an equivalent to the Phillips law to standardize GRBs is not an easy task because of the need to estimate the GRBs luminosity distance in a model independent way. We consider here three different calibration methods based ,
New physics at a Super Flavor Factory

The potential of a Super Flavor Factory (SFF) for searches of new physics is reviewed. While very high luminosity B physics is assumed to be at the core of the program, its scope for extensive charm and tau studies are also emphasized. The possibility to run at the Upsilon(5S) is also discussed; in principle, this could provide very clean measurements of B-s decays. The strength and reach of a SFF are most notably due to the possibility of examining an impressive array of very clean observables. The angles and the sides of the unitarity triangle can be determined with unprecedented accuracy. These serve as a reference for new physics (NP) sensitive decays such as B+->tau(+)nu(tau) and penguin dominated hadronic decay modes, providing tests of generic NP scenarios with an accuracy of a few percent. Besides very precise studies of direct and time dependent CP asymmetries in radiative B decays and forward-backward asymmetry studies in B -> X(s)l(+)l(-) and numerous null tests using B, charm, and tau decays are also likely to provide powerful insights into NP. The dramatic increase in luminosity at a SFF will also open up entirely new avenues for probing NP observables, e.g., by allowing sensitive studies using theoretically clean processes such as B -> X-s nu nu. The SFF is envisioned to be a crucial tool for essential studies of flavor in the CERN Large Hadron Collider era and will extend the reach of the Large Hadron Collider in many important ways.