Miracle-dz/UniFAR-FTUs huggingface dataset:
Detections of Massive Stars in the Cluster MCM2005b77, in the Star-forming Regions GRS G331.34−00.36 (S62) and GRS G337.92−00.48 (S36)

Large infrared and millimeter wavelength surveys of the Galactic plane have unveiled more than 600 new bubble H ii regions and more than 3000 candidate star clusters. We present a study of the candidate clusters MCM2005b72, DBS2003−157, DBS2003−172, and MCM2005b77 based on near-infrared spectroscopy taken with SofI on the NTT and infrared photometry from the 2MASS, VVV, and GLIMPSE surveys. We find that (1) MCM2005b72 and DBS2003−157 are subregions of the same star-forming region, H ii GRS G331.34−00.36 (bubble S62). MCM2005b72 coincides with the central part of this H ii region, while DBS2003−157 is a bright mid-infrared knot of the S62 shell. We detected two O-type stars at extinction = 1.0–1.3 mag. Their spectrophotometric properties are consistent with the near-kinematic distance to GRS G331.34−00.36 of 3.9 ± 0.3 kpc. (2) DBS2003−172 coincides with a bright mid-infrared knot in the S36 shell (GRS G337.92−00.48), where we detected a pair of candidate He i stars embedded in a small cometary nebula. (3) The stellar cluster MCM2005b77 is rich in B-type stars, has an average of 0.91 mag, and is adjacent to the H ii region IRAS 16137−5025. The average spectrophotometric distance of ∼5.0 kpc matches the near-kinematic distance to IRAS 16137−5025 of 5.2 ± 0.1 kpc.
Lithographic SERS Aptasensor for Ultrasensitive Detection of SARS-CoV-2 in Biological Fluids

In this paper, we propose a technology for the rapid and sensitive detection of the whole viral particles of SARS-CoV-2 using double-labeled DNA aptamers as recognition elements together with the SERS method for detecting the optical response. We report on the development of a SERS-aptasensor based on a reproducible lithographic SERS substrate, featuring the combination of high speed, specificity, and ultrasensitive quantitative detection of SARS-CoV-2 virions. The sensor makes it possible to identify SARS-CoV-2 in very low concentrations (the limit of detection was 100 copies/mL), demonstrating a sensitivity level comparable to the existing diagnostic golden standard—the reverse transcription polymerase chain reaction.
RADIAL VELOCITIES AND METALLICITIES OF RED GIANT STARS IN THE OLD OPEN CLUSTER NGC 7762

We present and discuss radial velocity and the very first metallicity measurements for nine evolved stars in the poorly known old open cluster NGC 7762. We isolated eight radial velocity cluster members and one interloper. Radial velocities are in good agreement with previous studies. NGC 7762 turns out to be of solar metallicity within the uncertainties ([Fe/H] = 0.04 ± 0.12). For this metallicity, the cluster age is 2.5 ± 0.2 Gyr, and falls in an age range where only a few old open clusters are known. With respect to previous studies, we find a larger distance, implying the cluster is located pc from the Sun. For most of the elements we measure solar-scaled abundance ratios. We searched the literature for open clusters of similar age in the solar vicinity and found that NGC 7762 can be considered a twin of Ruprecht 147, a similar age cluster located only 300 pc from the Sun. In fact, as well as age, metallicity and abundance ratios are very close to Ruprecht 147 values within the observational uncertainties.
Assessment of Urinary Exosomal NHE3 as a Biomarker of Acute Kidney Injury

The diagnosis of acute kidney injury (AKI) traditionally depends on the serum creatinine (Scr) and urine output, which lack sufficient sensitivity and specificity. Using urinary exosomes as a biomarker has unique advantages. To assess whether urinary exosomal Na+/H+ exchanger isoform 3 (NHE3) protein could serve as a biomarker of AKI, we constructed four AKI rat models: cisplatin (7.5 mg/kg) injected intraperitoneally (IP), furosemide (20 mg/kg, IP) with a low-NaCl (0.03%) diet, a low-NaCl (0.03%) diet with candesartan (1 mg/kg, IP) and bilateral ischemia and reperfusion (I/R) injury for 40 min. Additionally, we assessed six sepsis-associated AKI patients and six healthy volunteers. Urinary exosomes were extracted by ultracentrifugation, and the NHE3 protein abundance was tested by immunoblotting for all the AKI rats and human subjects. The isolated cup-shaped particles with an average diameter of 70 nm and enrichment in CD63 were identified as exosomes. NHE3 abundance was six times higher in exosomes than in the whole urine. In cisplatin-induced AKI rats, urinary exosomal NHE3 was increased on day 2, one day earlier than the increases in Scr and blood urea nitrogen (BUN). In additional rats, urinary exosomal NHE3 decreased along with the decline in Scr after EPO pretreatment. In volume-depletion AKI induced by furosemide injection with a low-NaCl diet, the urinary exosomal NHE3 expression was higher than that in the control. Under a low-NaCl diet with candesartan-related AKI, the urinary exosomal NHE3 was elevated on day 5, earlier than Scr. In I/R-injury AKI, the urinary exosomal NHE3 was also raised compared with that in the control. In humans, the urinary exosomal NHE3 level was also elevated in sepsis-associated AKI patients in comparison with that in the healthy volunteers. The urinary exosomal NHE3 was increased in multiple AKI; it may be used as a diagnostic biomarker of AKI.
Spin-dependent coupling between quantum dots and topological quantum wires

Considering Rashba quantum wires with a proximity-induced superconducting gap as physical realizations of Majorana fermions and quantum dots, we calculate the overlap of the Majorana wave functions with the local wave functions on the dot. We determine the spin-dependent tunneling amplitudes between these two localized states and show that we can tune into a fully spin polarized tunneling regime by changing the distance between dot and Majorana fermion. Upon directly applying this to the tunneling model Hamiltonian, we calculate the effective magnetic field on the quantum dot flanked by two Majorana fermions. The direction of the induced magnetic field on the dot depends on the occupation of the nonlocal fermion formed from the two Majorana end states which can be used as a readout for such a Majorana qubit.
The Power Spectrum of Mass Fluctuations Measured from the Lyα Forest at Redshift z = 2.5

We measure the linear power spectrum of mass-density fluctuations at redshift z = 2.5 from the Lyα forest absorption in a sample of 19 QSO spectra, using the method introduced by Croft et al. The P(k) measurement covers the range 2π/k ~ 450-2350 km s-1 (2-12 comoving h-1 Mpc for Ω = 1), limited on the upper end by uncertainty in fitting the unabsorbed QSO continuum and on the lower end by finite spectral resolution (0.8-2.3 Å FWHM) and by nonlinear dynamical effects. We examine a number of possible sources of systematic error and find none that are significant on these scales. In particular, we show that spatial variations in the UV background caused by the discreteness of the source population should have negligible effect on our P(k) measurement. We estimate statistical errors by dividing the data set into ten subsamples. The statistical uncertainty in the rms mass-fluctuation amplitude, σ ∝ [P(k)]1/2, is ~20%, and is dominated by the finite number of spectra in the sample. We obtain consistent P(k) measurements (with larger statistical uncertainties) from the high- and low-redshift halves of the data set, and from an entirely independent sample of nine QSO spectra with mean redshift z = 2.1. A power-law fit to our results yields a logarithmic slope n = -2.25 ± 0.18 and an amplitude Δ2ρ(kp) = 0.57+0.26-0.18, where Δ2ρ is the contribution to the density variance from a unit interval of ln k and kp = 0.008(km s-1)-1. Direct comparison of our mass P(k) to the measured clustering of Lyman break galaxies shows that they are a highly biased population, with a bias factor b ~ 2-5. The slope of the linear P(k), never previously measured on these scales, is close to that predicted by models based on inflation and cold dark matter (CDM). The P(k) amplitude is consistent with some scale-invariant, COBE-normalized CDM models (e.g., an open model with Ω0 = 0.4) and inconsistent with others (e.g., Ω = 1). Even with limited dynamic range and substantial statistical uncertainty, a measurement of P(k) that has no unknown "bias factors" offers many opportunities for testing theories of structure formation and constraining cosmological parameters.
High ‐ solids Anaerobic Digestion of the Organic Fraction of Municipal Solid Waste : From Experimental Setup to Model Development

1 Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, Frosinone, 03043, Italy 2 Laboratoire de Biotechnologie de l’Environnement, University of Montpellier, INRA, Narbonne, 11100, France 3 Department of Chemistry and Bioengineering, Tampere University of Technology, Tampere, FI-33720, Finland 4 Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Napoli, 80125, Italy
Phase structure of spin-imbalanced unitary Fermi gases

We investigate the phase structure of spin-imbalanced unitary Fermi gases beyond mean-field theory by means of the Functional Renormalization Group. In this approach, quantum and thermal fluctuations are resolved in a systematic manner. The discretization of the effective potential on a grid allows us to accurately account for both first- and second-order phase transitions that are present on the mean-field level. We compute the full phase diagram in the plane of temperature and spin-imbalance and discuss the existence of other conjectured phases such as the Sarma phase and a precondensation region. In addition, we explain on a qualitative level how we expect that in-situ density images are affected by our findings and which experimental signatures may potentially be used to probe the phase structure.
Perceived barriers to adopting information and communication technology in physical education

Background and Study Aim. The use of Information and Communication Technologies (ICTs) in Physical Education (PE) brings the science of sports to life by combining physical and mental activity. It also helps students focus better on practical and theoretical work. The purpose of this study was to investigate the perceived barriers to adopting ICTs in PE lessons among high school teachers in Malaysia. Material and Methods. A total of 112 Physical Education teachers were selected by stratified random sampling to answer an online questionnaire. Cluster analysis was then conducted to classify PE teachers’ profiles according to the frequency scores of experiencing challenges in using ICT tools in PE teaching and learning. Discriminant analyses were performed to determine the significant barriers related to technology that differentiate these clusters. Results. In conclusion, Cluster analysis identified three well-defined profiles: cluster 1 (excellent degrees in applying ICT to their teaching practices) consists of 44 teachers; cluster 2 (moderate degrees in applying ICT to their teaching practices) consist of 41 teachers; cluster 3 (poor degrees in applying ICT to their teaching practices) consist of 27 teachers. Results revealed seven out of twelve technology-related barriers were significant among these clusters. They are the insufficient number of computers (p<0.001), insufficient number of internet‐connected computers (p<0.001), insufficient pedagogical support for teachers (p<0.001), lack of content in the national language (p<0.001), pressure to prepare students for exams and tests (p<0.001), no or unclear benefit to using ICT for teaching (p<0.001) and perception of using ICT in teaching and learning not being a goal in their school (p<0.001). Conclusions. Awareness of these barriers has implications for physical education, curriculum design, teacher training, and youth participation in the school environment. The positive opinions and attitudes of PE teachers toward ICTs as educational tools could pave the way for improving their digital literacy. Thus increase their rate of use of these tools if they are provided with the appropriate technical resources and training.
Recent results on charmonium-like (exotic) XYZ states at the BESIII/BEPCII experiment in Beijing/China

With about 12 fb$^{-1}$ collected XYZ data sets, BESIII continues the exploration of the exotic charmonium-like states. In this talk, recent results on the measurements of the spin-parity determination of $Z_{\rm c}(3900)$, as well as on line-shapes of $e^+e^- \rightarrow J/\psi\,\pi\pi, h_{\rm c}\pi\pi, \psi(2S)\,\pi^0\pi^0/\pi^+\pi^-$, and $\pi^+ D^0 D^{*-}$ from open charm are discussed. Also, the recent observation of $e^+ e^- \rightarrow \phi \chi_{c1/2}$ at $\sqrt(s)=4.6$ GeV is reported.
Metabolic Phenotyping Study of Mouse Brain Following Microbiome Disruption by C. difficile Colonization

Clostridioides difficile infection (CDI) is responsible for an increasing number of cases of post-antibiotic diarrhea worldwide, which has high severity and mortality among hospitalized elderly patients. The disruption of gut microbiota due to antibacterial medication facilitates the intestinal colonization of C. difficile. In the present study, a murine model was used to investigate the potential effects of antibiotic administration and subsequent colonization by C. difficile, as well as the effects of three different 10-day treatments (metronidazole, probiotics, and fecal microbiota transplantation), on the brain metabolome for the first time. Four different metabolomic-based methods (targeted HILIC-MS/MS, untargeted RP-LC-HRMS/MS, targeted GC-MS/MS, and untargeted GC-MS) were applied, resulting in the identification of 217 unique metabolites in the brain extracts, mainly glycerophospholipids, glycerolipids, amino acids, carbohydrates, and fatty acids. Univariate and multivariate statistical analysis revealed that CDI, as well as the subsequent treatments, altered significantly several brain metabolites, probably due to gut dysbiosis, and affected the brain through the gut–brain axis. Notably, none of the therapeutic approaches completely restored the brain metabolic profile to the original, healthy, and non-infected phenotype, even after 10 days of treatment.
The Association between Body Mass Index and Muscular Fitness in Chinese College Freshmen

(1) Background: The present study aimed to investigate the association between body mass index (BMI) and muscular fitness in Chinese college freshmen. (2) Methods: A total of 6425 college freshmen in mainland China were recruited. BMI was classified as underweight (<18.5 kg/m2), normal weight (18.5~23.9 kg/m2), overweight (24~27.9 kg/m2), and obese (≥28 kg/m2), according to the Working Group on Obesity in China. Health-related physical fitness components including cardiorespiratory fitness, lower body explosive power, upper body muscular endurance, abdominal muscular endurance, flexibility, and vital capacity were assessed. Physical fitness index and muscular fitness index were calculated, respectively, as the sum score of the standardized values (z-score) of the corresponding components. Three regression models were used to evaluate the potential associations: a linear regression model, a polynomial regression model, and a restricted cubic spline regression model. Adjust R square was used to compare among models. (3) Results: Significant differences were observed among different BMI categories in nearly all physical fitness components as well as physical fitness z-score and muscular fitness z-score (p < 0.001), regardless of gender. Significant linear associations were found between BMI and physical fitness z-score as well as muscular fitness z-score among total, male, and female groups (p < 0.05). However, the restricted cubic spline regression model showed a better fitting effect (adjust R2 was 7.9%, 11.2%, and 4.8% in total, male, and female for physical fitness and 7.7%, 15.7%, and 4.0%, for muscular fitness, respectively), compared with the linear and polynomial regression models, presented by a higher adjusted R2. Restricted cubic splines analysis showed that BMI value and physical fitness z-score showed a non-linear relationship with an approximate inverted U curve in all groups, while an approximate reversed J-shaped association was observed between BMI and muscular fitness z-score in all groups. (4) Conclusions: The present study showed a nonlinear negative relationship between BMI and physical fitness with underweight and overweight/obese college freshmen having poorer physical fitness and muscular fitness than their normal BMI peers, which may provide useful evidence to the development of public health recommendations and encourage the health management of young adults. Future studies should further explore the relationship between BMI and muscular fitness with multi-centered large sample size studies.
Initial Evaluation Practices to Identify Young Children With Delays and Disabilities During the COVID-19 Pandemic

This study utilized a mixed methods design to analyze responses from a nationally distributed survey of professionals’ (N = 1,000) experiences conducting initial evaluations for early intervention and preschool special education during the COVID-19 pandemic. Most personnel reported pausing their initial evaluations at some point during the pandemic. Professionals conducting initial evaluations reported various changes to their prepandemic initial evaluation process, including moving the evaluation to a remote format and asking about the impact of the pandemic on the family. Changes to the initial evaluation process were more often reported by personnel conducting initial evaluations for early intervention when compared with personnel conducting initial evaluations for preschool special education. Responses to open-ended questions yielded several challenges and positive aspects of conducting initial evaluations in person or remotely during the pandemic. Professionals in both modalities grappled with the need to ensure health and safety objectives while maintaining recommended evaluation practices. The implications of study findings for research, practice, and policy enhancements are presented.
Magnetically regulated collapse in the B335 protostar? I. ALMA observations of the polarized dust emission

The role of the magnetic field during protostellar collapse is poorly constrained from an observational point of view, although it could be significant if we believe state-of-the-art models of protostellar formation. We present polarimetric observations of the 233 GHz thermal dust continuum emission obtained with ALMA in the B335 Class 0 protostar. Linearly polarized dust emission arising from the circumstellar material in the envelope of B335 is detected at all scales probed by our observations, from radii of 50 to 1000 au. The magnetic field structure producing the dust polarization has a very ordered topology in the inner envelope, with a transition from a large-scale poloidal magnetic field, in the outflow direction, to strongly pinched in the equatorial direction. This is probably due to magnetic field lines being dragged along the dominating infall direction since B335 does not exhibit prominent rotation. Our data and their qualitative comparison to a family of magnetized protostellar collapse models show that, during the magnetized collapse in B335, the magnetic field is maintaining a high level of organization from scales 1000 au to 50 au: this suggests the field is dynamically relevant and capable of influencing the typical outcome of protostellar collapse, such as regulating the disk size in B335.
Psychosocial correlates of pain intensity and neck disability index among people with non-specific neck pain in a low-resource setting: a cross-sectional study

Abstract Background Psychosocial factors such as pain catastrophising (PC), kinesiophobia, and pain self-efficacy (PSE) complicate disease burden among people with chronic pain and disability. Purpose To investigate the psychosocial correlates of neck pain intensity and disability among Nigerians with non-specific neck pain (NSNP). Methods We conducted a cross-sectional study of Nigerians with NSNP through hospitals-based consecutive sampling. Numeric Pain Rating Scale and the Neck Disability Index questionnaire were used to assess participants’ pain intensity (PI) and neck disability (ND), respectively. Kinesiophobia, PC, and PSE were assessed using Tampa Scale for Kinesiophobia (TSK), Pain Catastrophising Scale, and Pain Self-efficacy Questionnaire, respectively. Data analyses were completed using descriptive statistics, independent samples t-test, Pearson’s correlation coefficient, and multiple linear regression at p ≤ 0.05. Results Participants were (24 males, 48 females) aged 51.56 ± 14.31 years. The average PI (5.28 ± 1.80) and ND (35.03 ± 17.85) were moderate. There were significant correlations between PC and PI (r = 0.350, p = 0.003), and ND (r = 0.339, p = 0.004); kinesiophobia and ND (r = 0.314, p = 0.007); and PSE and ND (r = − 0.561, p < 0.001). Multiple linear regression analysis showed that PC (β = 0.270, p = 0.026) and ND (β = 0.494, p = 0.001) significantly predicts PI, while age (β = 0.197, p = 0.038), PI (β = 0.344, p = 0.001), and PSE (β= −0.474, p < 0.001) predicts ND. There were no statistically significant gender differences in PC, kinesiophobia and PSE. Conclusion Non-specific neck pain and ND correlates with psychosocial factors such as PC and PSE, respectively. There were no gendered differences in psychosocial responses to NSNP, however, older individuals tend to have more severe ND. Assessment of age and psychosocial factors should be included in management of NSNP.
The Pristine survey II: A sample of bright stars observed with FEROS†

Extremely metal-poor (EMP) stars are old objects formed in the first Gyr of the Universe. They are rare and, to select them the most successful strategy has been to build on large and low-resolution spectroscopic surveys. The combination of narrow- and broad-band photometry provides a powerful and cheaper alternative to select metal-poor stars. The ongoing Pristine Survey is adopting this strategy, conducting photometry with the Canada France Hawaii Telescope MegaCam wide-field imager and a narrow-band filter centered at 395.2 nm on the Ca II-H and -K lines. In this paper, we present the results of the spectroscopic follow-up conducted on a sample of 26 stars at the bright end of the magnitude range of the Survey (g⩽15), using FEROS at the MPG/ESO 2.2-m telescope (manufactured by Zeiss, Oberkochen, Germany). From our chemical investigation on the sample, we conclude that this magnitude range is too bright to use the Sloan Digital Sky Survey (SDSS) gri bands, which are typically saturated. Instead, the Pristine photometry can be usefully combined with the AAVSO Photometric All Sky Survey (APASS) griphotometry to provide reliable metallicity estimates.
Chaotic front dynamics in semiconductor superlattices

Institut fu¨r Theoretische Physik, Technische Universit¨at Berlin, Hardenbergstrasse 36, 10623, Berlin, Germany(Dated: 11.12.2001)We analyze the dynamical evolution of the current and the charge density in a superlattice forﬁxed external dc voltage in the regime of self-sustained current oscillations, using a microscopicsequential tunneling model. Fronts of accumulation and depletion layers which are generated atthe emitter may collide and annihilate, thereby leading to a variety of diﬀerent scenarios. We ﬁndcomplex chaotic regimes at high voltages and low contact conductivities.