Miracle-dz/UniFAR-FTUs huggingface dataset:
Subacute Cardiac Tamponade Due to Tuberculous Pericarditis Diagnosed by Urine Lipoarabinomannan Assay in a Immunocompetent Patient in Oyam District, Uganda: A Case Report

Background: Uganda ranks among the countries with the highest burden of TB the world and tuberculous pericarditis (TBP) affects up to 2% of people diagnosed with pulmonary tuberculosis worldwide. In Africa, it represents the most common cause of pericardial disease. Here, we present the case of a 21-year-old male patient who was diagnosed of cardiac tamponade due to tuberculous pericarditis with a positive urine LF-LAM. Case report: We report a case of a 21-year-old male living in Oyam district, Uganda, who presented to the emergency department with difficulty in breathing, easy fatigability, general body weakness, and abdominal pain. A chest X-ray showed the presence of right pleural effusion and massive cardiomegaly. Thus, percutaneous pericardiocentesis was performed immediately and pericardial fluid resulted negative both for gram staining and real-time PCR test Xpert MTB/RIF. The following day’s urine LF-LAM test resulted positive, and antitubercular therapy started with gradual improvement. During the follow-up visits, the patient remained asymptomatic, reporting good compliance to the antitubercular therapy. Conclusion: Our case highlights the potential usefulness of a LF-LAM-based diagnostic approach, suggesting that, in low-resource settings, this test might be used as part of routine diagnostic workup in patients with pericardial disease or suspected extra-pulmonary tuberculosis.
Symmetrical crossed rectangular horn for a circularly polarized multiple-beam reflector antenna

Radiation characteristics of a symmetrical crossed rectangular horn using a solution of an integral eigenvalue equation given by Lin is described. E - and H -plane pattern symmetry and two-dimensional radiation patterns for circular polarization are studied comparing with those of a square horn, with specific emphasis on cross-polarization levels. Using a symmetrical crossed rectangular horn as a circularly polarized primary feed gain and cross-polarization characteristics of offset paraboloidal reflector antennas with circular and elliptical apertures have been investigated. A practical example of a circularly polarized multiple-beam antenna with contoured pattern using three symmetrical-crossed rectangular horns is shown.
Virasoro Orbits, AdS_3 Quantum Gravity and Entropy

We analyse the canonical structure of AdS 3 gravity in terms of the coadjoint orbits of the Virasoro group. There is one subset of orbits, associated to BTZ black hole solutions, that can be described by a pair of chiral free ﬁelds with a background charge. There is also a second subset of orbits, associated to point-particle solutions, that are described by two pairs of chiral free ﬁelds obeying a constraint. All these orbits admit K¨ahler quantization and generate a Hilbert space which, despite of having ∆ 0 ( ¯∆ 0 ) = 0, does not provide the right degeneracy to account for the Bekenstein-Hawking entropy due to the breakdown of modular invariance. Therefore, additional degrees of freedom, reestablishing modular invariance, are necessarily required to properly account for the black hole entropy.
Constraints on Super-Earth Interiors from Stellar Abundances

Modeling the interior of exoplanets is essential to go further than the conclusions provided by mean density measurements. In addition to the still limited precision on the planets’ fundamental parameters, models are limited by the existence of degeneracies on their compositions. Here, we present a model of internal structure dedicated to the study of solid planets up to ∼10 Earth masses, i.e., super-Earths. When the measurement is available, the assumption that the bulk Fe/Si ratio of a planet is similar to that of its host star allows us to significantly reduce the existing degeneracy and more precisely constrain the planet’s composition. Based on our model, we provide an update of the mass–radius relationships used to provide a first estimate of a planet’s composition from density measurements. Our model is also applied to the cases of two well-known exoplanets, CoRoT-7b and Kepler-10b, using their recently updated parameters. The core mass fractions of CoRoT-7b and Kepler-10b are found to lie within the 10%–37% and 10%–33% ranges, respectively, allowing both planets to be compatible with an Earth-like composition. We also extend the recent study of Proxima Centauri b and show that its radius may reach 1.94 in the case of a 5 planet, as there is a 96.7% probability that the real mass of Proxima Centauri b is below this value.
Hubble Space Telescope Observations of the CfA Seyfert 2 Galaxies: The Fueling of Active Galactic Nuclei

We present an investigation of possible fueling mechanisms operating in the inner kiloparsec of Seyfert galaxies. We analyze visible and near-infrared Hubble Space Telescope images of 24 Seyfert 2 galaxies from the CfA Redshift Survey sample. In particular, we are searching for the morphological signatures of dynamical processes responsible for transporting gas from kiloparsec scales into the nucleus. The circumnuclear regions are very rich in gas and dust, often taking the form of nuclear spiral dust lanes on scales of a few hundred parsecs. While these nuclear spirals are found in 20 of our 24 Seyfert galaxies, we find only five nuclear bars among the entire sample, strongly reinforcing the conclusions of other investigators that nuclear bars are not the primary means of transporting this material into the nucleus. An estimate of the gas density in the nuclear spirals, based on extinction measurements, suggests that the nuclear spiral dust lanes are probably shocks in nuclear gas disks that are not strongly self-gravitating. Since shocks can dissipate energy and angular momentum, these spiral dust lanes may be the channels by which gas from the host galaxy disks is being fed into the central engines.
Morphological stability and specific resistivity of sub-10 nm silicide films of Ni1−xPtx on Si substrate

This letter studies the morphological stability and specific resistivity of sub-10 nm silicide films of Ni, Ni0.95Pt0. 05, and Ni0.9Pt0. 1 formed on Si(100) substrate. When the deposited metal films are below 1 to 4 nm in thickness depending on the Pt content, the resultant silicide films tend to become epitaxially aligned to the Si substrate and hence exhibit an extraordinary morphological stability up to 800 °C. The presence of Pt in the silicides increases the film resistivity through alloy scattering, but alleviates, owing to a reduced electron mean free path, the frequently encountered sharp increase in resistivity in the sub-10 nm regime.
NUMERICAL INVESTIGATION OF A ROTATIONALLY OSCILLATING CYLINDER IN MEAN FLOW

Abstract Vortex shedding and the development of a wake behind a rotationally oscillating circular cylinder was investigated using a hybrid vortex method at a Reynolds number of 1000 over a wide range of forcing frequency and amplitude. The normalised peripheral velocity–oscillation amplitude of the cylinder ranged from 0 to 3 while the ratio of forcing frequency to the vortex-shedding frequency from a stationary cylinder varied from 0 to 10. The time-dependent pressure, lift and drag forces exerted on the cylinder were studied together with the flow patterns in the wake. Some behaviours of vortex shedding are revealed and the lock-on range for vortex shedding is obtained. It is found that, in the case of a very low frequency ratio, vortices are shed at a frequency close to that from a stationary cylinder when the amplitude is small; however, the vortices are shed at cylinder-oscillation frequency when the amplitude is large. When the frequency ratio is close to 1, the form of vortex shedding and lock-on exhibit a particularly strong resonance between the flow perturbations and the vortex wake, and the mean value of the drag coefficients increases remarkably. Its maximum value increases with increasing amplitude within the lock-on range and shifts towards the lower frequency end of the lock-on range. When the frequency ratio is greater than a certain value beyond the lock-on range, small-scale vortices are shed at the forcing frequency in the near wake. Subsequently, these vortices coalesce and result in a large-scale antisymmetrical structure in the far wake similar to the Karman vortex street past a stationary cylinder. The mean value of the drag coefficients decreases in the post lock-on frequency range. The larger the amplitude, the more distinct is the drag coefficient decrease, and the minimum value is lower than that for flow past a stationary cylinder. After the minimum is reached, the drag coefficient increases again with further increase in cylinder-oscillation frequency and approaches the value for the stationary cylinder.
Quantum contact process

Federico Carollo, 2 Edward Gillman, 2 Hendrik Weimer, and Igor Lesanovsky 2 School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK Centre for the Mathematics and Theoretical Physics of Quantum Non-Equilibrium Systems, University of Nottingham, Nottingham, NG7 2RD, UK Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstraße 2, 30167 Hannover, Germany (Dated: February 13, 2019)
Antimicrobial susceptibility profile of Salmonella enterica isolated from poultry farms using Vitek- 2

Background: The increase emergence and dissemination of antibiotic resistant Salmonella strains may contribute to a great risk on public health and impair classical treatment regime. The present study is aimed to investigate the prevalence of NTS in feces of broilers in four provinces in Iraq, and the resistance profile of isolates to clinically important antibiotics. Method: a total of 185 fecal samples were collected during the period from October2017 to March2018, from 28 broiler farms distributed in four governorates (Al- Najaf Al-Ashraf, AL-Qadyssia, Al-Muthana, and Babylon). Suspected Isolates of Salmonella were assayed for, detection of invA gene PCR, antibiotic susceptibility by Vitek-2. Results: The prevalence of NTS infection in 28 examined poultry flocks was 75,7%. High prevalence rate of NTS was observed in Babylon (91,7%), followed by Al-Qadyssia (72,7%) and Al-Muthana (70%), which significantly differed (P ≤ 0.01) than reported in AL- Najaf (50%). While the isolation rate was 21.6%. All Salmonella isolates were positive for the invA gene. The majority of isolates were resistant to Minocycline (87.5%) and Ciprofloxacin (85%) with P value ≤ 0.01. in addition to these, 55% of strains were resistant to Pipracillin, 52,5% to Ticarcillin (p ≤ 0.05), and 37,5% to Gentamycin. Fortunately, all isolates were susceptible to Amikacin, Meropenem, Imipenem, Piperacillin/Tazobactam and Ticarcillin/Clavulanic acid, followed by 97.5% of strains were sensitive to Ceftazidime, Cefepime and Aztreanam. Twenty (50%) isolates were exhibited multiple resistance to three or more different antibacterial classes with different resistance profiles. In conclusion, high prevalence of Salmonella and MDR Salmonella was found in broiler farms located in four Iraqi provinces.
MODELLING SCAFFOLD OCCUPATION BY A GROWING, NUTRIENT-RICH TISSUE

In this paper we present a simple deterministic model of a biological tissue growing within a porous scaffold. By neglecting the effects of nutrient limitations and intercellular pressure on cell growth, and by using Darcy's law to model the cells' movement through the scaffold, our model is formulated as a moving boundary problem. Due to the difficulty in solving the resulting system, we reformulate it as a linear complementarity problem using the Baiocchi transformation, and give both one-dimensional analytical solutions and two-dimensional numerical ones. We then focus on the behaviour of the moving boundary as the colony approaches confluence, using asymptotic analysis to derive the time of confluence and the shape of the moving boundary; we show in particular that the moving boundary evolves to an ellipse. We also show that pressures increase considerably in the tissue shortly before the scaffold is filled, and identify the potential problem for tissue engineers of a "slit" being left devoid of cells.
Waiting for Inflation: A New Initial State for the Universe

We propose a cosmological lingering phase for the initial state prior to inflation which would help address the singularity problem of inflation. The universe begins with a constant (Hagedorn) temperature and then transitions into an inflationary universe while preserving the Null Energy Condition (NEC). In such a universe time is presumably emergent, calling the age of the universe into question. We first consider the phase space of positive spatial curvature models within General Relativity and with matter sources that respect the NEC. Depending on the duration of the post-lingering inflation these models can produce a small amount of observable spatial curvature in the Cosmic Microwave Background. We also discuss how lingering can arise with or without spatial curvature in theories of quantum gravity when considering the thermodynamic scaling of particles and its impact on the early universe. The string theory dilaton is essential to the dynamics. There are many open questions that remain.
Failure of the empirical OCT law in the Bi2Sr2CuO6 + δ compound

We have studied the evolution of the thermoelectric power S(T) with oxygen doping of single-layered Bi2Sr2CuO 6 + δ thin films and ceramics in the overall superconducting (Tc, S290 K) phase diagram. While the universal relation between the room temperature thermopower S290 K and the critical temperature is found to hold in the strongly overdoped region (δ > 0.14), a strong violation is observed in the underdoped part of the phase diagram. The observed behaviour is compared with other cuprates and the different scenarios are discussed.
Observations of a z = 1.44 Dusty, Ultraluminous Galaxy and Implications for Deep Submillimeter Surveys

We present new near-infrared and optical spectroscopic observations that confirm the redshift of the z = 1.44 extremely red object ERO J164502+4626.4 (object 10 of Hu & Ridgway, formerly known as HR 10 or [HR94] 10) and a Hubble Space Telescope image that reveals a reflected S-shaped morphology at (rest-frame) near-ultraviolet wavelengths. The contrast between the rest-frame far-red (λλ8200-9800 Å) and near-UV (λλ2900-3900 Å) morphologies suggests that the central regions of the galaxy are heavily obscured by dust and that the galaxy is most likely an interacting or disturbed system. We also present new photometry of this object at 450, 850, and 1350 μm obtained using the Submillimeter Common-User Bolometer Array (SCUBA) submillimeter camera on the James Clerk Maxwell Telescope. Our submillimeter data are extremely sensitive to emission from cold dust at high redshift. The rest-frame spectral energy distribution of ERO J164502+4626.4 is best understood in terms of a highly reddened stellar population with ongoing star formation, as originally suggested by Graham & Dey. The new submillimeter data presented here indicate that the remarkable similarity to ultraluminous infrared galaxies (ULIRGs) such as Arp 220 and Mrk 231 extends into the rest-frame far-infrared, which bears the signature of thermal emission from dust, presumably heated by young stars. ERO J164502+4626.4 is extremely luminous (L ≈ 7 × 1012 h-250 L☉) and dusty [Mdust ≈ 7 × 108(Tdust/40 K)-5 h-250 M☉]. If its luminosity is powered by young hot stars, then ERO J164502+4626.4 is forming stars at the prodigious rate of Ṁ = 1000-2000 h-250 M☉ yr-1. We conclude that ERO J164502+4626.4 is a distant analog of the nearby ULIRG population, the more distant or less luminous counterparts of which may be missed by even the deepest existing optical surveys. The submillimeter emitters recently discovered by deep SCUBA surveys may be galaxies similar to ERO J164502+4626.4 (but perhaps more distant). This population of extremely dusty galaxies may also contribute significantly to the cosmic submillimeter background emission.
Adaptive probabilistic tracking with reliable particle selection

A novel, effective probabilistic tracking method is proposed to adaptively capture the varying target appearance in a complex environment. Different from the traditional particle filter algorithms, the proposed method estimates the weight of each particle not only through similarity measurement between the target model and each hypothetical observation, but also through dissimilarity measurement between the background model and each hypothetical observation. The reliable particles with high weights are then selected to estimate the target state, and the target model is evolved over time with a novel model update strategy. Comparison experimental results demonstrate the robust performance of the proposed algorithm under challenging conditions.
Characterization of distillable and activatable states using entanglement witnesses

We introduce a formalism that connects entanglement witnesses and the distillation and activation properties of a state. We apply this formalism to two cases: First, we rederive the results presented in Eggeling et al. (e-print quant-ph/0104095), namely, that one copy of any bipartite state with nonpositive partial transpose (NPPT) is either distillable, or activatable. Second, we show that there exist three-partite NPPT states, with the property that two copies can neither be distilled, nor activated.
External Variables as Points in Smallest Space Analysis: a Theoretical, Mathematical and Computer-Based Contribution

Des variables externes comme points dans l'analyse de similitudes, une contribution théorique, mathématique et informatique : Etant donné une configuration de n points dans un espace euclidéen et un vecteur E de coefficients de similarité d'objets externes par rapport à ces n points, le problème est de situer E parmi les n points fixes en cherdhant à maximiser la similarité de E avec un point, et à minimiser sa distance à ce point. Ce problème a été résolu de manière technique par différents procédés présentés ici, mais il est néanmoins négligé en général. Dans cet article, nous présentons une contribution théorique et mathématique pour la résolution de ce problème.
Properties of perpendicular-anisotropy magnetic tunnel junctions fabricated over the bottom electrode contact

Perpendicular-anisotropy magnetic tunnel junctions (MTJs) were prepared on four substrate geometries, i.e., directly on the axis of the bottom electrode contact, directly off the axis of the bottom electrode contact, on the axis of the bottom electrode contact with a polished bottom electrode, and off the axis of the bottom electrode contact with a polished bottom electrode. Electrical shorts were observed for direct on-axis geometry at a certain extent, whereas there were no electrical shorts for the other three geometries. The MR ratio/σR, JC0, and thermal stability factor of the devices for polish on-axis geometry were almost the same as those for polish off-axis geometry. From TEM observations of the polish on-axis device, the interface between the bottom contact and the base electrode was determined to be rough, whereas the MgO barrier layer was determined to be smooth, indicating that the polish process was effective for smooth magnetic tunnel junction fabrication over the bottom contact. MTJs for polish on-axis geometry eliminated the base electrode resistance and increased the magnetoresistance ratio. This technology contributes to the higher density of spin transfer torque magnetic random access memory.
An Efficient Algorithm for Reliability Evaluation of the Bus Network

The bus network is widely used in industrial automation and avionics systems due to its many advantages. Network reliability is an important indicator of the bus network design and analysis. However, the widely used reliability evaluation method is not capable of dealing with the bus network. In this paper, we model the bus network without redundancy and the bus network with redundancy, propose the algorithms to calculate the two-terminal reliability and the k-terminal reliability of the bus network with redundancy, and verify the effectiveness of the algorithms in three scenarios. The experimental results show that when the reliability of the link reaches 0.9, the two-terminal reliability of the bus network with redundancy of six terminal nodes, eight terminal nodes, and ten terminal nodes is 40.95%, 52.17%, and 61.26% higher than that of the bus network without redundancy, respectively; the k-terminal reliability is 61.26%, 74.58%, and 83.32% higher than that of the bus network without redundancy, respectively. The bus network with redundancy increases the communication paths for data exchange between devices and has higher reliability than the bus network without redundancy. The algorithms proposed in this paper provide an effective solution for the reliability evaluation of the bus network. It perfects the reliability evaluation system of the network with different topology architectures.
Institute for Mathematical Physics on Spherical Functions on the Group Su(2) × Su(2) × Su(2) on Spherical Functions on the Group Su(2) × Su(2) × Su(2)

1 We consider the group G := SU(2) × · · · × SU(2) (l times), where SU(2) is the group of unitary 2 × 2 matrices, whose determinant is 1. Denote by K ≃ SU(2) the diagonal subgroup in G. We obtain a generating function for all K-spherical functions on G.
An all-sky survey of circular polarization at 200 MHz

We present results from the first all-sky radio survey in circular polarisation. The survey uses the Murchison Widefield Array (MWA) to cover 30900 sq. deg. , over declinations south of +30$^{\circ}$ and north of -86$^{\circ}$ centred at 200 MHz (over a 169-231 MHz band). We achieve a spatial resolution of approx. 3' and a typical sensitivity of 3.0 mJy PSF$^{-1}$ over most of the survey region. We demonstrate a new leakage mitigation technique that reduces the leakage from total intensity into circular polarisation by an order of magnitude. In a blind survey of the imaged region, we detect 14 pulsars in circular polarisation above a 6$\sigma$ threshold. We also detect six transient sources associated with artificial satellites. A targeted survey of 2376 pulsars within the surveyed region yielded 33 detections above $4\sigma$. Looking specifically at pulsars previously detected at 200 MHz in total intensity, this represents a 35% detection rate. We also conducted a targeted survey of 2400 known flare stars, this resulted in two tentative detections above $4\sigma$. A similar targeted search for 1506 known exoplanets in the field yielded no detections above $4\sigma$. The success of the survey suggests that similar surveys at longer wavelength bands and of deeper fields are warranted.
Topological mechanics of edge waves in Kagome lattices

Topological insulators are new phases of matter whose properties are derived from a number of qualitative yet robust topological invariants rather than specific geometric features or constitutive parameters. Here, Kagome lattices are classified based on a topological invariant directly related to the handedness of a couple of elliptically polarized stationary eigenmodes in the context of what is known as the "quantum valley Hall effect" in physics literature. An interface separating two topologically distinct lattices, i.e., two lattices with different topological invariants, is then proven to host two topological Stoneley waves whose frequencies, shapes and decay and propagation velocities are quantified. Conversely, an interface separating two topologically equivalent lattices will host no Stoneley waves. Analysis is based on an asymptotic model derived through a modified high-frequency homogenization procedure. This case study constitutes the first implementation of the quantum valley Hall effect in in-plane elasticity. A preliminary discussion of 1D lattices is included to provide relevant background on topological effects in a simple analytical framework.