Miracle-dz/UniFAR-FTUs huggingface dataset:
Role of Umbilical Cord C- Peptide Level in Early Detection of Hypoglycemia in Infant of Diabetic Mother

Background: Until date, diabetes during pregnancy has been linked to an increased risk of maternal, fetal, and neonatal morbidity and mortality. Infants of diabetic mothers (IDM) frequently have difficulties related to fetal hyperglycemia and hyperinsulinemia caused by maternal hyperglycemia. Because insulin breakdown is accelerated in the presence of mild hemolysis, cord serum C-peptide levels are utilized as an indicator of fetal beta-cell function rather than insulin levels. Objective: To study the relationship between umbilical cord C-peptide and risk of hypoglycemia in infants of diabetic mothers. Patients and Methods: This Cross-sectional study was conducted on 50 infants of diabetic mothers. Infants who developed hypoglycemia in first 24-hour age were considered as cases and infants who did not develop hypoglycemia during the first 24 hours were considered as controls in Neonatal Unit of Benha university hospitals in cooperation with the Department of Obstetrics and Gynecology, during the period from January 2022 to July 2022. Result : The infants were divided into two groups: Hypoglycemia group (Cases group): included 31 infants of diabetic mothers who developed hypoglycemia in first 24-hour age. normoglycemic group (Control group): included 19 infants who did not develop hypoglycemia during the first 24 hours. Conclusion: In this study, we discovered a substantial rise in UC C-peptide levels in hypoglycemic babies as compared to the control group, indicating that C-peptide might be utilized as an early predictor of hypoglycemia in IDMs.
Ultraviolet Imaging of NGC 3310: A Merger-driven Global Starburst

We present the first far-ultraviolet (FUV; λ ~ 1500 Å) image of the nearby peculiar SAB(r)bc galaxy NGC 3310. The small 15'' (945 pc) diameter circumnuclear starburst ring is the most luminous structure, producing 30% of the total observed FUV luminosity. Diffuse emission from the inner disk (20'' < R < 40'') contributes another ~20% of the observed FUV flux. A linear feature (the “arrow”) appears to be a star-forming tidal feature. A diffuse arc observed at optical wavelengths (the “bow”) is not visible in the FUV and is probably a tidally induced shell composed of older stars. Mean star formation rates range from 0.031 M☉ yr-1 kpc-2 in the arrow to 2.1 M☉ yr-1 kpc-2 at the brightest FUV source. The striking similarity between the R1/4 law behavior of the FUV and B-band surface brightness profiles, combined with the very blue colors of NGC 3310, strongly argues that the present morphology is the result of a global starburst triggered by a merger with a dwarf companion.
The role of early social play behaviors and language skills for shy children’s later internalizing difficulties in school

Research has demonstrated links from early childhood shyness to socioemotional problems later in life. This longitudinal study explored the role of early social play behaviors and language skills in the associations between childhood shyness and later internalizing and language difficulties in school. Participants were N = 7,447 children (50.1% girls) from the Norwegian Mother, Father, and Child Cohort Study (MoBa). Latent direct, indirect, and interaction path analyses were performed within a structural equation framework. Results showed that mother-rated childhood shyness from age 18 months to age five years was associated with mother-rated internalizing difficulties and language problems at age eight years. Lower levels of teacher-reported social play behaviors and poorer language skills in preschool increased the risk of later anxiety problems among shy children, whereas higher levels of language competencies and social play behaviors buffered against later anxiety problems. The study identifies some of the early risk and protective factors that may influence shy children’s socio-emotional functioning and adjustment.
Efficiency Enhancement Strategies for Stable Bismuth-Based Perovskite and Its Bioimaging Applications

Lead-free perovskite is one of the ideal solutions for the toxicity and instability of lead halide perovskite quantum dots. As the most ideal lead-free perovskite at present, bismuth-based perovskite quantum dots still have the problem of a low photoluminescence quantum yield, and its biocompatibility also needs to be explored. In this paper, Ce3+ ions were successfully introduced into the Cs3Bi2Cl9 lattice using a modified antisolvent method. The photoluminescence quantum yield of Cs3Bi2Cl9:Ce is up to 22.12%, which is 71% higher than that of undoped Cs3Bi2Cl9. The two quantum dots show high water-soluble stability and good biocompatibility. Under the excitation of a 750 nm femtosecond laser, high-intensity up-conversion fluorescence images of human liver hepatocellular carcinoma cells cultured with the quantum dots were obtained, and the fluorescence of the two quantum dots was observed in the image of the nucleus. The fluorescence intensity of cells cultured with Cs3Bi2Cl9:Ce was 3.20 times of that of the control group and 4.54 times of the control group for the fluorescence intensity of the nucleus, respectively. This paper provides a new strategy to develop the biocompatibility and water stability of perovskite and expands the application of perovskite in the field.
The influence of wind speed on shallow marine cumulus convection

AbstractThe role of wind speed on shallow marine cumulus convection is explored using large-eddy simulations and concepts from bulk theory. Focusing on cases characteristic of the trades, the equilibrium trade wind layer is found to be deeper at stronger winds, with larger surface moisture fluxes and smaller surface heat fluxes. The opposing behavior of the surface fluxes is caused by more warm and dry air being mixed to the surface as the cloud layer deepens. This leads to little difference in equilibrium surface buoyancy fluxes and cloud-base mass fluxes. Shallow cumuli are deeper, but not more numerous or more energetic. The deepening response is necessary to resolve an inconsistency in the subcloud layer. This argument follows from bulk concepts and assumes that the lapse rate and flux divergence of moist-conserved variables do not change, based on simulation results. With that assumption, stronger winds and a fixed inversion height imply larger surface moisture and buoyancy fluxes (heat fluxes are sm.
On the Probability of Simultaneous Extremes of Two Gaussian Nonstationary Processes

This paper deals with the probability of simultaneous extremes of two Gaussian nonstationary processes $${\bf P}\Big\{\max_{t\in [0,T]}X_1(t)>u,\\max_{s\in [0,T]}X_2(s)>u\Big\}. $$ The exact asymptotic representation for the probability is found as $u\to \infty$. The main tool for finding the asymptotics is a development of the double sum method.
Effect of Gain Saturation on Wideband WDM Signal in PPLN-Based Optical Parametric Amplifier

The periodically poled LiNbO3 (PPLN) based optical parametric amplifier (OPA) is a technology that contributes to the construction of multi-band wavelength-division multiplexing (WDM) optical networks thanks to its wide amplification bandwidth and wavelength conversion function. In addition, the fast response of the OPA means it is unaffected by sudden changes of wavelength channels due to dynamic channel add-drop. However, such fast response leads to nonlinear signal distortion when operating in the gain saturation region. This paper experimentally investigates the conversion of gain saturation into the nonlinear amplitude distortion in a 64-Gbaud 64QAM WDM signal. We characterized the input power tolerance of a PPLN-based OPA in wideband WDM applications and found that the nonlinear amplitude distortion can be suppressed by increasing the number of WDM channels. For a 75-GHz-spacing 64-channel WDM configuration, the total input power tolerance was improved by ∼10 dB compared to a single-channel case. We also confirmed that there is almost no wavelength dependence of the effect of gain saturation on the signal distortion. These results show that PPLN-based OPAs have a wide total input power range for amplifying wideband WDM signals in terms of the nonlinear distortion.
The fast multipole method (FMM) for electromagnetic scattering problems

The fast multipole method (FMM) developed by V. Rokhlin (1990) to efficiently solve acoustic scattering problems is modified and adapted to the second-kind-integral-equation formulation of electromagnetic scattering problems in two dimensions. The present implementation treats the exterior Dirichlet problem for two-dimensional, closed, conducting objects of arbitrary geometry. The FMM reduces the operation count for solving the second-kind integral equation from O(n/sup 3/) for Gaussian elimination to O(n/sup 4/3/) per conjugate-gradient iteration, where n is the number of sample points on the boundary of the scatterer. A sample technique for accelerating convergence of the iterative method, termed complexifying k, the wavenumber, is also presented. This has the effect of bounding the condition number of the discrete system; consequently, the operation count of the entire FMM (all iterations) becomes O(n/sup 4/3/). Computational results for moderate values of ka, where a is the characteristic size of the scatterer, are given. >
SEMI‐IMPLICIT FINITE VOLUME SHALLOW‐WATER FLOW AND SOLUTE TRANSPORT SOLVER WITH k–ε TURBULENCE MODEL

A 3D semi-implicit finite volume scheme for shallow-water flow with the hydrostatic pressure assumption has been developed using the σ-co-ordinate system, incorporating a standard κ-e turbulence transport model and variable density solute transport with the Boussinesq approximation for the resulting horizontal pressure gradients. The mesh spacing in the vertical direction varies parabolically to give fine resolution near the bed and free surface to resolve high gradients of velocity, k and e. In this study, wall functions are used at the bed (defined by the bed roughness) and wind stress at the surface is not considered. Surface elevation gradient terms and vertical diffusion terms are handled implicitly and horizontal diffusion and source terms explicitly, including the Boussinesq pressure gradient term due to the horizontal density gradient. The advection terms are handled in explicit (conservative) form using linear upwind interpolation giving second-order accuracy. A fully coupled solution for the flow field is obtained by substituting for velocity in the depth-integrated continuity equation and solving for surface elevation using a conjugate gradient equation solver.
Field method for rapid quantification of labile organic carbon in hyper-arid desert soils validated by two thermal methods

Abstract The objective of this work was to develop a field method for the determination of labile organic carbon in hyper-arid desert soils. Industry standard methods rely on expensive analytical equipment that are not possible to take into the field, while scientific challenges require fast turn-around of large numbers of samples in order to characterize the soils throughout this region. Here we present a method utilizing acid-hydrolysis extraction of the labile fraction of organic carbon followed by potassium permanganate oxidation, which provides a quick and inexpensive approach to investigate samples in the field. Strict reagent standardization and calibration steps within this method allowed the determination of very low levels of organic carbon in hyper-arid soils, in particular, with results similar to those determined by the alternative methods of Calcination and Pyrolysis–Gas Chromatography–Mass Spectrometry. Field testing of this protocol increased the understanding of the role of organic materials in hyper-arid environments and allowed real-time, strategic decision making for planning for more detailed laboratory-based analysis.
Central Dynamics of Globular Clusters: the Case for a Black Hole in ω Centauri

Abstract The globular cluster ω Centauri is one of the largest and most massive members of the Galactic system. Its classification as a globular cluster has been challenged making it a candidate for being the stripped core of an accreted dwarf galaxy; this and the fact that it has one of the largest velocity dispersions for star clusters in our galaxy makes it an interesting candidate for harboring an intermediate mass black hole. We measure the surface brightness profile from integrated light on an HST/ACS image, and find a central power-law cusp of logarithmic slope -0.08. We also analyze Gemini GMOS-IFU kinematic data for a 5”x5” field centered on the nucleus of the cluster, as well as for a field 14″ away. We detect a clear rise in the velocity dispersion from 18.6 kms−1 at 14″ to 23 kms−1 in the center. Given the very large core in ω Cen (2.58'), an increase in the dispersion in the central 10″ is difficult to attribute to stellar remnants, since it requires too many dark remnants and the implied configuration would dissolve quickly given the relaxation time in the core. However, the increase could be consistent with the existence of a central black hole. Assuming a constant M/L for the stars within the core, the dispersion profile from these data and data at larger radii implies a black hole mass of 4.0+0.75−1.0×104M⊙. We have also run flattened, orbit-based models and find a similar mass. In addition, the no black hole case for the orbit model requires an extreme amount of radial anisotropy, which is difficult to preserve given the short relaxation time of the cluster.
Minimal Area Surfaces, Euclidean Wilson loops and Riemann Theta Functions

The AdS/CFT correspondence relates Wilson loops in supersymmetric N = 4 gauge theory to minimal area surfaces in anti-de Sitter space. In this paper we consider the case of Euclidean flat Wilson loops which are related to minimal area surfaces in Euclidean AdS3 space. Using known mathematical results for such minimal area surfaces we describe an infinite parameter family of analytic solutions for closed Wilson loops. Further, we also consider examples of surfaces with two boundaries dual to correlators of two Wilson loops.
Environmental Health Risks Assesment of Human Exposure to Pb Pollution Around Soyoan River, Indonesia

The presence of the heavy metal lead (Pb), which accumulates in water and sediment, will enter into the life of organisms which can have a toxic effect on the organisms in it. This study aimed to analyze the health risks of consuming Mujair fish (Oreochromis Mossambicus) which contains the heavy metal Pb in the river flow of Soyoan Village, Ratatotok District, Southeast Minahasa Regency. The research method was descriptive with an environmental health risk analysis (ARKL) approach. Determination of lead levels in fish, water, and sediments used the Atomic Absorption Spectrophotometer method with a graphite furnace. The results showed that the average Pb in Mujair fish was 0.23 mg/kg, the average Pb in water was 1.48 mg/liter, and the average in sediment was 52.98 mg/kg. Pb concentrations in aquatic fish and sediments had exceeded the threshold. The Risk Quotion (RQ) value wasstill below 1 (RQ < 1), meaning that Mujair fish (Oreochromis Mossambicus) in the Soyoan river was still safe for consumption. The ECR value ≤ 10-4 indicated that making risk management was not something that needs to be prioritized. However, the presence of high concentrations was an indicator so that the rate of intake and frequency of exposure can be reduced. In Islamic teachings, it has been explained that damage to the environment due to human actions has an adverse effect on the biota and threatens the surrounding community's health.
MHD properties in the core of ITER-like hybrid scenarios

MHD stability is studied in the frame of ITER like hybrid scenarios, characterized by weak reversed shear, with particular attention on ideal internal kink modes and infernal mode stability. Numerical simulations for ITER like equilibria, with hollow q profiles with an off axis minimum close to unity, were carried out using the 3-D equilibrium code ANIMEC, which showed the presence of a 3-D helical core [1] with the characteristics of a saturated internal kink mode. The internal kink perturbation has been investigated non-linearly using the XTOR code, in the ideal frame. A scan in the current was performed and it has been found that when the minimum of q is above the unity (low currents), the helical distorsion shows good agreement with the results provided by the 3-D ANIMEC simulations while for qmin below 1 (high currents), XTOR gives a residual distorsion in contrast with the ANIMEC results. Moreover infernal mode stability in hybrid scenarios has been studied analytically extending the quasi-interchange model with the inclusion of resistive and both electron and ion diamagnetic effects. This enables us to investigate kinetic effects on plasma scenarios susceptible to saturated kink structures exhibited into ANIMEC simulations.
Plastid DNA sequences and oospore characters of some European taxa of Tolypella section Tolypella (Characeae) identify five clusters, including one new cryptic Tolypella taxon from Sardinia, but they do not coincide with current morphological descriptions

In Europe, the genus Tolypella (Characeae) comprises four to eight Tolypella taxa in sections Rothia and Tolypella that have been distinguished by vegetative morphology and gametangial characters such as antheridial size and oospore wall ornamentation. However, morphological differentiation is difficult in some cases due to overlapping and variable vegetative features, which in many cases are difficult to observe clearly. To clarify the taxonomic status of the five European taxa of Tolypella in section Tolypella, sequence data of the plastid genes atpB, rbcL and psbC for Tolypella glomerata (Desv.) Leonh. , Tolypella hispanica Allen, Tolypella nidifica (O.F. Müll.) A. Braun, Tolypella normaniana (Nordst.) Nordst. and Tolypella salina Cor. were combined with data on oospore morphology, including oospore wall ornamentation. Gene sequence data identified five distinct clusters, but they were not consistent with the morphologically identified five taxa. T. glomerata consisted of some of the samples morphologically identified as T. glomerata and seven samples of T. normaniana, while the remaining T. glomerata samples clustered with specimens of unclear affiliation (Tolypella sp.). We identified two clusters of T. hispanica within the European material: cluster T. hispanica I consisted of samples from various locations, whereas the second cluster (T. hispanica II) consisted of samples of T. hispanica from Sardinia Island. The remaining cluster consisted of all the specimens that had been determined as T. salina or T. nidifica in addition to two specimens of T. normaniana. Oospore morphology was most clearly distinguishable for T. glomerata. Oospore characteristics for all other taxa were not as informative but showed some geographical and/or environmentally influenced differences, especially for T. nidifica and T. salina. Our results suggest the need to further check the different taxonomy of Tolypella sect. Tolypella in which specimens normally identified as T. glomerata might be two different taxa, T. glomerata and an unidentified taxon; T. nidifica and T. salina are not separate taxa; T. normaniana is a diminutive variant of two different Tolypella taxa; and T. hispanica comprises two different taxa, one from the Mediterranean island Sardinia.
Staying physically active during the COVID-19 pandemic: Assessing the roles of motivation, basic psychological needs, goal orientation and anticipatory sport persistence

Nationwide barriers to public and private sport institutions were implemented during COVID-19 lockdowns. Autonomous motivation, perceived fulfillment of basic psychological needs (competence, autonomy, and relatedness) and goal orientation coincide with higher persistence rates in physical activity. The aim of this study is to investigate which factors are related to anticipatory sport persistence, a specific form of sport persistence. We conducted an online survey with N = 208 (74% female) participants. Correlation analyses showed that higher anticipatory sport persistence coincides with autonomous motivation (r = 0.314, p < 0.01), basic psychological needs (competence r = 0.528, autonomy r = 0.446, relatedness r = 0.315; all p < 0.01), and goal orientation (intrinsic r = 450, extrinsic r = 0.146; all p < 0.01). Furthermore, multiple regression analysis showed that anticipatory sport persistence can be predicted through intrinsic goal orientation (B = 0.465, p < 0.01) and the need for competence (B = 0.418, p < 0.01). The importance of anticipatory sport persistence when expecting external barriers to physical activity, its relationship toward sport persistence and possible implications for the planning and perseverance of physical activity plans are being discussed.
Mechanisms of Nanoscale Radiation Enhancement by Metal Nanoparticles: Role of Low Energy Electrons

Metal nanoparticles are considered as highly promising radiosensitizers in cancer radiotherapy. Understanding their radiosensitization mechanisms is critical for future clinical applications. This review is focused on the initial energy deposition by short-range Auger electrons; when high energy radiation is absorbed by gold nanoparticles (GNPs) located near vital biomolecules; such as DNA. Auger electrons and the subsequent production of secondary low energy electrons (LEEs) are responsible for most the ensuing chemical damage near such molecules. We highlight recent progress on DNA damage induced by the LEEs produced abundantly within about 100 nanometers from irradiated GNPs; and by those emitted by high energy electrons and X-rays incident on metal surfaces under differing atmospheric environments. LEEs strongly react within cells; mainly via bound breaking processes due to transient anion formation and dissociative electron attachment. The enhancement of damages induced in plasmid DNA by LEEs; with or without the binding of chemotherapeutic drugs; are explained by the fundamental mechanisms of LEE interactions with simple molecules and specific sites on nucleotides. We address the major challenge of metal nanoparticle and GNP radiosensitization; i.e., to deliver the maximum local dose of radiation to the most sensitive target of cancer cells (i.e., DNA). To achieve this goal the emitted electrons from the absorbed high energy radiation must be short range, and produce a large local density of LEEs, and the initial radiation must have the highest possible absorption coefficient compared to that of soft tissue (e.g., 20–80 keV X-rays).