Miracle-dz/UniFAR-FTUs huggingface dataset:
Structure of Tip Clearance Flow in an Isolated Axial Compressor Rotor

Ensemble-averaged and phase-locked flow patterns in various tip clearances of two axial compressor rotors were obtained by aperiodic multisampling technique with a hot wire in the clearance and with a high-response pressure sensor on the casing wall. A leakage flow region distinct from a throughflow region exists at every clearance. In the case of a small tip clearance, the leakage jet flow interacts violently with the throughflow near the leading edge, and a rolling-up leakage vortex decays downstream. As the clearance increases, a stronger leakage vortex comes into existence at a more downstream location, and a reverse flow due to the vortex grows noticeably. A scraping vortex is recognized at the pressure side near the trailing edge only for the small clearance. A horseshoe vortex appears in the upstream half of the through flow region for every tip clearance. The solidity does not affect the flow pattern substantially except for the interaction of the leakage vortex with the adjacent blade and wake.
A cross-sectional study on exploring the antecedents of patient’s revisit intention: Mediating role of trust in the hospital among patients in India

Background: In the healthcare domain, patients’ trust in the hospital plays an instrumental role in determining the behavioral intention of the patient. This article attempts to investigate the impact of service quality perception on behavioral intention with the mediating effect of trust in the hospital and patient satisfaction. Methods: This research was carried out in multispecialty hospitals located in Bangalore Urban and Mysore districts of Karnataka during August 2021. This was a questionnaire-based study and the sample size was 242. Statistical Package for the Social Science (SPSS) 27.0 and SmartPLS 3.0 software was used to analyze the data. Results: The findings revealed that perceived service quality significantly influences trust through patient satisfaction (observed partial mediation) and patient satisfaction significantly impacts behavioral intention through trust (observed partial mediation). Conclusion: This study empowers hospital managers to understand the factors influencing behavioral intention. Healthcare professionals must ensure that good quality service is delivered to enhance patient satisfaction and trust in adverse services, which influence behavioral intention among the patients.
Hölderian functional central limit theorem for multi-indexed summation process ?

Let {Xj; j 2 N d , j 1} be an i.i. d. random field of square integrable centered random elements in the separable Hilbert space H and n, n 2 N d , be the summation processes based on the collection of sets [0,t1]◊···◊[0,td], 0 ti 1, i = 1,. ,d. When d 2, we characterize the weak convergence of (n1 .nd) 1/2 n in the Holder space H o (H) by the finiteness of the weak p moment of kX1k for p = (1/2 ) 1 . This contrasts with the Holderian FCLT for d = 1 and H = R (Ra£kauskas, Suquet, 2003) where the necessary and sucient condition is P(|X1| > t) = o(t p ).
Reduced Immune Fitness and Job Performance: Absenteeism, Presenteeism, and Associated Costs for the Dutch Economy

Reduced immune fitness can have a significant negative impact on work performance. The aim of the current study was to evaluate the impact of reduced immune fitness on job performance and associated costs for the Dutch economy. Data from n = 425 Dutch working adults (18–65 years old) who completed an online survey were analyzed to evaluate the number of days of absenteeism (not going to work) and presenteeism (working while sick) due to reduced immune fitness, and the performance level on days worked with reduced immune fitness. Data from for the year 2019 were analyzed. Participants reported 2.9 absenteeism days and 19 presenteeism days, with an average performance reduction of 22.8% when working on days with reduced immune fitness. Significantly more days of absenteeism and presenteeism were reported by women, individuals with a poorer immune fitness, and those with underlying disease. Performance impairment on days worked while experiencing reduced immune fitness was significantly greater among individuals with a younger age at the junior career level, those with underlying disease, and among highly educated individuals. The associated costs of reduced immune fitness were estimated at €4.3 billion for absenteeism and €6.4 billion for presenteeism. Together, the costs of reduced immune fitness for the Dutch economy in 2019 were estimated at €10.7 billion. These findings demonstrate that reduced immune fitness has a significant negative impact on the Dutch economy.
A note on linking electrical current, magnetic fields, charges and the pole in a barn paradox in special relativity

We point out the connection between the ‘pole in a barn paradox’ and the phenomenon of alterations in charge in a segment of a current-carrying conductor as perceived by observers in different inertial reference frames. This connection appears to offer a useful pedagogical strategy helping students to appreciate that the issues which underlie the explanation of the paradox can be important and significant in everyday phenomena such as magnetic forces on moving charges and at the very modest speeds associated with electron drift in conductors.
Microbial Genomics: Innovative Targets and Mechanisms

Multidrug resistance (MDR) has become an increasing threat to global health because bacteria can develop resistance to antibiotics over time. Scientists worldwide are searching for new approaches that go beyond traditional antibiotic discovery and development pipelines. Advances in genomics, however, opened up an unexplored therapeutic opportunity for the discovery of new antibacterial agents. Genomic approaches have been used to discover several novel antibiotics that target critical processes for bacterial growth and survival, including histidine kinases (HKs), LpxC, FabI, peptide deformylase (PDF), and aminoacyl-tRNA synthetases (AaRS). In this review, we will discuss the use of microbial genomics in the search for innovative and promising drug targets as well as the mechanisms of action for novel antimicrobial agents. We will also discuss future directions on how the utilization of the microbial genomics approach could improve the odds of antibiotic development having a more successful outcome.
Preconditioning for Stratospheric Sudden Warmings: Sensitivity Studies with a Numerical Model

Abstract A three-dimensional primitive equation model of the stratosphere is used to investigate the phenomenon of preconditioning for sudden warmings. A flow is said to be preconditioned when the stratosphere is in a state such that a realistic planetary wave pulse from below will lead to a major sudden stratospheric warming. Two observed sudden warmings (February 1979 and February 1989) are simulated by the model. The initial fields are based on zonal-mean observations for individual days during these two winters. The observed wave evolution over a 20-day period is imposed at the lower boundary (near 250 mb). All of the days chosen for initialization and for the beginning of the lower-boundary wave evolution correspond to a time about nine days prior to either one of the major sudden warmings or a minor sudden warming of the same winter. For comparison, model runs are initialized with hybrid initial fields constructed by splicing together upper-level (above 10 mb) data from one day and lower-level data .
Species Diversity and Community Composition of Termites (Isoptera) in Southern Haryana, India

A capturing-identification survey was undertaken to evaluate the termite’sspecies richness and diversity in different study areas (Mahendragarh, Rewari, Nuh, Gurugram, Palwal, and Faridabad) of Southern Haryana, India. A total of 187 samples were collected and identified into 23 species that belong to three families (Termitidae, Rhinotermitidae, Kalotermidae) and four subfamilies viz., Macrotermitinae, Termitinae, Amitermitinae, Coptotermitinae. Species richness varied in respective study areas, i.e., 14, 22, 32, 35. 39 and 45 species were recorded in Faridabad, Rewari, Palwal, Gurugram, Mahendragarh and Nuh respectively. Different diversity indices (Shannon diversity, Simpson diversity, Menhinick diversity, Margalef diversity, Jaccard and Sorensen similarity index) were used to explain diversity of termite fauna. Results reveal that Shannon, Simpson and Margalef Indices were found to be highest in Nuh district and lowest in Faridabad, whereas, Menhinick diversity was highest in Palwal and minimum in Faridabad. However, according to Jaccard and Sorensen similarity Indices, highest species similarity was noticed between Mahendragarh and Rewari showed (0.67, 0.8), while minimum in Faridabad with Gurugram district (0.29, 0.44). Species diversity was also calculated and found to be highest in the month of June, July, August and September in relation to favorable climatic factors as termite required for their survival.
Restoring Activity of Milk Thistle (Silybum marianum L.) on Serum Biochemical Parameters, Oxidative Status, Immunity, and Performance in Poultry and Other Animal Species, Poisoned by Mycotoxins: A Review

Simple Summary Mycotoxins are secondary metabolites produced naturally by toxigenic fungi, which elicit a toxic response in humans and animals. The livestock sector is showing a greater focus on phytoextracts for their limiting and controlling the toxic effects of mycotoxins with safeguarding animals’ health and performance. Milk thistle and its bioactive compound silymarin are considered useful for this scope. This review underlines the efficacy of milk thistle to counteract mycotoxins toxicity on organs, biochemical and immunological functions, and performance in poisoned poultry and livestock. The use of milk thistle as a whole plant, seed, and its standardized silymarin extract in mycotoxicosis cases produce positive effects on the maintenance of the animals’ performance, restoring liver functionality due to its known hepatoprotective and antioxidant effects, reducing organ lesions caused by intoxication. The use of milk thistle in animal farming can be useful since the bioactive compounds, also if present in variable amounts, can help the animals to counteract the effects of mycotoxins. The use of silymarin, due to its cost, can be useful if it reported the specific bioactive compounds it contained. Abstract Grains are major farm animals’ diet ingredients, and one of the main concerns is when are mycotoxin (MyT) contaminated, compromising animals’ health, performance, and product safety. Among the natural phytocompounds that are being used to prevent MyT damage, silymarin (SIL), an extract from the seed of the milk thistle (MT) is a suitable candidate. This review aims to examine the scientific evidence concerning the anti-MyT toxicity effects of MT/SIL in poultry and livestock. In vitro and in vivo studies (n = 27) showed that MT whole plant, seed, or SIL-standardized extract had positive effects on animal health, performance, and restoring the hepatic activity, with a reduction of organ lesions caused by MyT. Furthermore, showed utility for combating MyT-immunodepression, improving intestinal health, and limiting the excretion of toxins residues in food of animal origin, although in some cases, MT/SIL supplementation does not produce appreciable effects. The use of MT in animal nutrition can be useful since the bioactive compounds, also if present in variable amounts, can help the animals to counteract the effects of MyT. The use of the phytoextract of SIL, due to its cost, can be useful if it reported the specific bioactive compounds, recognize for their pharmacological activities.
Hydromagnetic forced flow between a rotating disc and a naturally permeable stationary porous disc saturated with fluid

This paper considers the flow of a conducting viscous incompressible fluid between two nonconducting parallel discs, when the magnetic field was applied perpendicularly to the discs. The upper disc is in steady rotation, while the lower one is a stationary porous disc. The whole flow is divided into two regions: the free fluid region (between two parallel discs) and the porous region (this flow is of porous material). The approximate solutions are obtained by solving the Navier-Stokes equations in the free fluid region, and the Darcy’s equations in the porous region with suitable boundary conditions at the interface. The effects of rotation, Hartmann number and forced parameter have been considered on the flow characteristics and are illustrated by graphs. The flow is essentially dominated by rotational effect as well as by the forced parameter.
Translating the Results of a Selective Decontamination of the Digestive Tract Trial into Efficacious Real-Life Interventions

Recommended Citation Piazza, Ornella; Boccia, Giovanni; Ciacci, Carolina; De Caro, Francesco; Filippelli, Amelia; Franci, Gianluigi; and Pagliano, Pasquale (2022) "Translating the results of a Selective Decontamination of the Digestive Tract trial into efficacious real-life interventions," Translational Medicine @ UniSa: Vol. 24 : Iss. 2 , Article 4. Available at: https://doi.org/10.37825/2239-9747.1038
BVRI imaging polarimetric studies of the galaxy NGC 5128

Multi-colour imaging polarimetry of the galaxy NGC 5128 shows that polarization is present throughout the dust lane with patterns of orientation which are coherent on kpc scale-lengths. In the central regions of the dust lane, within ±O.7 kpc of the projected position of the galactic nucleus, the polarization is oriented parallel to the long axis of the lane and reaches levels up to 5 per cent. At the outer extremities of the the dust lane, higher levels of polarization are found with orientations perpendicular to the axis of the dust lane. In the intermediate regions, null points in the polarization are observed in addition to an unexpected reversal of polarization orientation across the dust lane. We are unable to account for all our observations - polarization maps and the wavelength dependence of polarization in the dust lane - without involving two competing polarizing mechanisms, namely, dichroic extinction and scattering by dust grains. The polarimetric properties ofNGC 5128 are very similar to those found in galaxies such as M104, IC 4329A and NGC 2146, and it appears that azimuthal magnetic fields, confined to the equatorial planes of galaxies with prominent dust lanes, are a common occurrence. The nature and origins of these magnetic fields are considered.
NMR-Based Metabolomics for Geographical Discrimination of Adhatoda vasica Leaves

Adhatoda vasica (L.), Nees is a widespread plant in Asia. It is used in Ayurvedic and Unani medications for the management of various infections and health disorders, especially as a decoction to treat cough, chronic bronchitis, and asthma. Although it has a diverse metabolomic profile, this plant is particularly known for its alkaloids. The present study is the first to report a broad range of present compounds, e.g., α-linolenic acid, acetate, alanine, threonine, valine, glutamate, malate, fumaric acid, sucrose, β-glucose, kaempferol analogues, quercetin analogues, luteolin, flavone glucoside, vasicine and vasicinone, which were identified by NMR spectroscopy-based metabolomics. Multivariate data analysis was used to analyze 1H-NMR bucketed data from a number of Adhatoda vasica leave samples collected from eight different regions in Pakistan. The results showed large variability in metabolomic fingerprints. The major difference was on the basis of longitude/latitude and altitude of the areas, with both primary and secondary metabolites discriminating the samples from various regions.
Hazard consistent record selection procedures accounting for horizontal and vertical components of the ground motion: Application to liquid storage tanks

A methodology is proposed to enable state‐of‐the‐art record selection using ground motion components in all three principal loading directions. Relying on the well‐established Conditional Spectrum approach, its fundamental concepts are extended to ensure hazard consistency when the vertical ground motion component is considered along with the horizontal ones. To this end, different record selection techniques are employed, spanning sets of ground motion records with and without vertical motions, as well as with and without vertical ground motion hazard consistency. To demonstrate the effect that each record set can potentially have on a structure, an unanchored liquid storage tank is adopted as a case study, because of the vertical uplift motion it can exhibit, even under the application of horizontal loading only. A reduced‐order structural model is employed to generate the numerical output via multi‐stripe analysis, thus enabling the evaluation of the pertinent record selection approaches. Focusing on uplift and compressive meridional stress, response ratios and response hazard curves are extracted. It is shown that although the vertical ground motion component only mildly affects uplift, its effect on compressive meridional stress, on average, amplifies the response by a factor of 1.8 for moderate intensities and 2.8 for higher ones. Accounting for hazard consistency in the vertical component appears to be important for the case at hand, as it reveals notable discrepancies in the mean annual frequency of exceedance for the response parameters examined.
Galaxies and far-infrared emission

The far-infrared luminosities of the central few hundred parsecs of many galaxies may exceed by more than an order of magnitude the amount expected from late-type stars. However, for the M82, NGC 253, NGC 1068 and several other galaxies studied in the present paper, the inferred mass-to-luminosity ratios are within the limits expected for stellar distributions containing early-type stars.
Monolithically 3D-Printed Microfluidics with Embedded µTesla Pump

Microfluidics has earned a reputation for providing numerous transformative but disconnected devices and techniques. Active research seeks to address this challenge by integrating microfluidic components, including embedded miniature pumps. However, a significant portion of existing microfluidic integration relies on the time-consuming manual fabrication that introduces device variations. We put forward a framework for solving this disconnect by combining new pumping mechanics and 3D printing to demonstrate several novel, integrated and wirelessly driven microfluidics. First, we characterized the simplicity and performance of printed microfluidics with a minimum feature size of 100 µm. Next, we integrated a microtesla (µTesla) pump to provide non-pulsatile flow with reduced shear stress on beta cells cultured on-chip. Lastly, the integration of radio frequency (RF) device and a hobby-grade brushless motor completed a self-enclosed platform that can be remotely controlled without wires. Our study shows how new physics and 3D printing approaches not only provide better integration but also enable novel cell-based studies to advance microfluidic research.
Numerical Analysis of Heated Channel Flows by a Space-Marching Finite Volume Technique

7; fully-three-dimensional flow; near-critical thermodynamic conditions of the fluid; fluid decomposition reactions; and coupling between flow and wall temperature evolution. The proposed approximation is to use parabolized Navier–Stokes equations. Parabolization is obtained by neglecting viscous derivatives in the space-marching direction and by considering the streamwise pressure gradient as a source term evaluated on the basis of the overall momentum balance. The algorithm is based on a finite volume approach, which uses a modified Roe’s approximate Riemann solver for a fluid governed by a generic equation of state. Validation of the approach is presented by comparison of the channel-flow results with full Navier–Stokes solutions and experimental data. Results show that the present approach is a practicable one for the study of cooling properties of real fluids in channels.
Breakup and atomization of a kerosene jet in crossflow at elevated pressure

The breakup, penetration, and atomization of a plain jet of kerosene Jet A-1 fuel in a non-swirling crossflow of air were investigated experimentally at test conditions relevant to LPP (Lean Premixed Prevaporized) combustion for gas turbines. Measurement techniques employed include time-resolved shadowgraphs, Mie-scattering laser light sheets, and Phase-Doppler-Anemometry (PDA). The nozzle diameter was 0.45 mm and its L/D ratio was 1.56. Air velocities lay between 50 m/s and 100 m/s, the air pressure range extended from 1.5 bar to 15 bar and the air temperature was around 290 K. Fuel flowrates were chosen so that the fuel-to-air momentum flux ratio q assumed mainly values between 2 and 18. Two different mechanisms of jet breakup could be discerned and correlations for the jet penetration and lateral dispersion close to the nozzle were derived. Furthermore, the penetration of the spray plume and its representative droplet diameters were determined. Finally, a simple, approximate model to predict liquid fuel penetration is presented.
ISOCAM and molecular observations of the edge of the Horsehead nebula

We present ISOCAM observations (5-18 µm) of the Horsehead nebula, together with observations of the (J = 1−0) and (J = 2−1) transitions of 12 CO, 13 CO and C 18 O taken at the IRAM 30-m telescope. The Horsehead nebula presents a typical photodissociation region illuminated by the O9.5 V system σ Ori. The ISOCAM emission is due to very small particles transiently heated to high temperature each time they absorb a UV photon. A very sharp filament (width: ∼10 �� or ∼0.02 pc) is detected by ISOCAM at the illuminated edge of the nebula. This filament is due to a combined effect of steep increase of the column density and extinction of incident radiation, on typical sizes below ∼0.01 pc. Both the three-dimensional shape and the local density of the illuminated interface are strongly constrained. The dense material forming the edge of the Horsehead nebula appears illuminated edge-on by σ Ori, and the particles located beyond the border should not be affected by the incident radiation field. This structure may be due to dense filaments in the parental cloud which have shielded the material located in their shadow from the photo-dissociating radiations. The measurement of the penetration depth of the incident radiation from the infrared data (∼0.01 pc) gives a density of a few 10 4 cm −3 just behind the bright filament. This value is comparable to the estimate of the density beyond the edge and deduced from our molecular observations, and also to the density behind the ionization front calculated in the stationary case. The material behind the illuminated edge could also be non-homogeneous, with clump sizes significantly smaller than the observed penetration depth of ∼0.01 pc. In that case no upper limit on the average density just behind the illuminated edge can be given.