bluuebunny/crossref_metadata_2025_split huggingface dataset:
Retinal blood flow association with age and weight in infants at risk for retinopathy of prematurity
Authors: Cho Euna , Das Urjita , Sidelnikov Danielle , Balasubramanian Tara , Shats Daniel , Mansoor Shaiza , Forbes He Eun , Zhou Jason , Kapoor Ria , Chase Sera , Kore Madi , Williams Kristin , Saeedi Osamah , Sundararajan Sripriya , Levin Moran Roni , Magder Laurence , Alexander Janet Leath 
Published: June 2024

AbstractThis prospective study evaluated the relationship between laser speckle contrast imaging (LSCI) ocular blood flow velocity (BFV) and five birth parameters: gestational age (GA), postmenstrual age (PMA) and chronological age (CA) at the time of measurement, birth weight (BW), and current weight (CW) in preterm neonates at risk for retinopathy of prematurity (ROP). 38 Neonates with BW < 2 kg, GA < 32 weeks, and PMA between 27 and 47 weeks underwent 91 LSCI sessions. Correlation tests and regression analysis were performed to quantify relationships between birth parameters and ocular BFV. Mean ocular BFV index in this cohort was 8.8 +/− 4.0 IU. BFV positively correlated with PMA (r = 0.3, p = 0.01), CA (r = 0.3, p = 0.005), and CW (r = 0.3, p = 0.02). BFV did not correlate with GA nor BW (r = − 0.2 and r = − 0.05, p > 0.05). Regression analysis with mixed models demonstrated that BFV increased by 1.2 for every kilogram of CW, by 0.34 for every week of CA, and by 0.36 for every week of PMA (p = 0.03, 0.004, 0.007, respectively). Our findings indicate that increased age and weight are associated with increased ocular BFV measured using LSCI in premature infants. Future studies investigating the associations between ocular BFV and ROP clinical severity must control for age and/or weight of the infant.
Compact metamaterial-based single/double-negative/near-zero index resonator for 5G sub-6 GHz wireless applications
Authors: Ibrahim Sura Khalil , Al-Bawri Samir Salem , Singh Mandeep Jit , Ibrahim Husam Hamid , Islam Mohammad Tariqul , Islam Md Shabiul , Abdulkawi Wazie M. , Sheta Abdel-Fattah A. 
Published: June 2024

AbstractThe concept, performance, and analyses of distinctive, miniaturized metamaterial (MTM) unit cell addressing the forthcoming Sub 6 GHz 5G applications are presented in this paper. Two circular split-ring resonators (CSRR) with two parallel rectangular copper elements in front of the design and a slotted square element in the background make up the suggested metamaterial. It has a line segment with tunable features that is positioned in the center of the little ring copper structure. The suggested design offers a significant operating frequency band of 220 MHz together with a resonance of transmission coefficient S21 at 3.5 GHz. Furthermore, in two (z & x) principal axes of wave propagation, wide-range achievement, single/double-negative (S/DNG) refractive index, negative permittivity, and near-zero permeability properties were demonstrated. Through varying central slotted-strip line length, resonance frequencies can be selectively altered. Moreover, the metamaterial has overall dimensions of 9 × 9 mm2 and is composed on a Rogers 5880 RT substrate. In order to create the suggested MTM's equivalent circuit, which shows similar coefficient of transmission (S21), a proposed design’s numerical simulation is carried out in the CST micro-wave studio. This simulation is after that put to comparison with manufacturing of the design.
Exploring the impact of magnetic fields on biomass production efficiency under aerobic and anaerobic batch fermentation of Saccharomyces cerevisiae
Authors: Sincak M. , Turker M. , Derman Ü. C. , Erdem A. , Jandacka P. , Luptak M. , Luptakova A. , Sedlakova-Kadukova J. 
Published: June 2024

AbstractIn this work, the effect of moderate electromagnetic fields (2.5, 10, and 15 mT) was studied using an immersed coil inserted directly into a bioreactor on batch cultivation of yeast under both aerobic and anaerobic conditions. Throughout the cultivation, parameters, including CO2 levels, O2 saturation, nitrogen consumption, glucose uptake, ethanol production, and yeast growth (using OD 600 measurements at 1-h intervals), were analysed. The results showed that 10 and 15 mT magnetic fields not only statistically significantly boosted and sped up biomass production (by 38–70%), but also accelerated overall metabolism, accelerating glucose, oxygen, and nitrogen consumption, by 1–2 h. The carbon balance analysis revealed an acceleration in ethanol and glycerol production, albeit with final concentrations by 22–28% lower, with a more pronounced effect in aerobic cultivation. These findings suggest that magnetic fields shift the metabolic balance toward biomass formation rather than ethanol production, showcasing their potential to modulate yeast metabolism. Considering coil heating, opting for the 10 mT magnetic field is preferable due to its lower heat generation. In these terms, we propose that magnetic field can be used as novel tool to increase biomass yield and accelerate yeast metabolism.
Healthy assemblages of Isidella elongata unintentionally protected from trawling offshore of Asinara Island (northwestern Sardinia, NW Mediterranean Sea)
Authors: Angiolillo M. , Di Lorenzo B. , Izzi A. , Giusti M. , Nonnis O. , Pazzini A. , Trabucco B. , Tunesi L. 
Published: June 2024

AbstractDeep-sea coral assemblages are marine biodiversity hot spots. Because of their life history traits, deep-sea corals are highly vulnerable to the impacts of human activities such as fishing. The critically endangered “bamboo coral” Isidella elongata is a key structuring species of deep muddy bottoms that is susceptible to habitat destruction, particularly from trawling. A shallow population of this species was recently discovered by a multibeam and ROV survey offshore of the Asinara Island marine protected area (MPA) (northwestern Sardinia, NW Mediterranean Sea). This vulnerable marine assemblage has been found under healthy conditions at depths ranging from 110 to 298 m. Isidella elongata occurs on a muddy seafloor locally characterised by boulders associated with black coral species (Parantipathes larix and Antipathes dichotoma). The lush colonies of I. elongata seem to be related to natural protection from bottom trawling activity; nevertheless, the presence of lost fishing artisanal nets has been observed in the study area. These structuring species are indicators of vulnerable marine ecosystems, and their conservation is essential for preserving marine biodiversity. Therefore, enlarging the perimeter of the Asinara Island MPA into its deeper western waters is suggested to ensure the protection of these valuable and vulnerable marine ecosystems.
Brain network topology and its cognitive impact in adult glioma survivors
Authors: De Roeck Laurien , Blommaert Jeroen , Dupont Patrick , Sunaert Stefan , Sleurs Charlotte , Lambrecht Maarten 
Published: June 2024

AbstractStructural brain network topology can be altered in case of a brain tumor, due to both the tumor itself and its treatment. In this study, we explored the role of structural whole-brain and nodal network metrics and their association with cognitive functioning. Fifty WHO grade 2–3 adult glioma survivors (> 1-year post-therapy) and 50 matched healthy controls underwent a cognitive assessment, covering six cognitive domains. Raw cognitive assessment scores were transformed into w-scores, corrected for age and education. Furthermore, based on multi-shell diffusion-weighted MRI, whole-brain tractography was performed to create weighted graphs and to estimate whole-brain and nodal graph metrics. Hubs were defined based on nodal strength, betweenness centrality, clustering coefficient and shortest path length in healthy controls. Significant differences in these metrics between patients and controls were tested for the hub nodes (i.e. n = 12) and non-hub nodes (i.e. n = 30) in two mixed-design ANOVAs. Group differences in whole-brain graph measures were explored using Mann–Whitney U tests. Graph metrics that significantly differed were ultimately correlated with the cognitive domain-specific w-scores. Bonferroni correction was applied to correct for multiple testing. In survivors, the bilateral putamen were significantly less frequently observed as a hub (pbonf < 0.001). These nodes’ assortativity values were positively correlated with attention (r(90) > 0.573, pbonf < 0.001), and proxy IQ (r(90) > 0.794, pbonf < 0.001). Attention and proxy IQ were significantly more often correlated with assortativity of hubs compared to non-hubs (pbonf < 0.001). Finally, the whole-brain graph measures of clustering coefficient (r = 0.685), global (r = 0.570) and local efficiency (r = 0.500) only correlated with proxy IQ (pbonf < 0.001). This study demonstrated potential reorganization of hubs in glioma survivors. Assortativity of these hubs was specifically associated with cognitive functioning, which could be important to consider in future modeling of cognitive outcomes and risk classification in glioma survivors.
Efficient minimum blind area model for system and interference uncertainty
Authors: Guo Yu , Ge Songhu , Meng Jin 
Published: June 2024

AbstractIn the anti‐interference of broadband communication radio, interference cancellation performance is seriously affected by the uncertainty of the working frequency selection of the communication system and the direction of hostile interference. The closed‐form solution of the interference cancellation weight value and the signal‐to‐interference noise ratio after the cancellation are derived and simplified to clarify the factors affecting interference cancellation quality. Then, the efficient blind area criterion is established for the low computational complexity in view of cancellation quality, which combines the radio communication index and anti‐interference demand index. Based on this criterion, the minimum blind area model is proposed for robust performance. The experimental results in the auxiliary antenna spacing optimisation are consistent with the theoretical analysis, verifying the effectiveness of the proposed model in dealing with uncertain communication frequency and interference direction. It is very promising in communication interference cancellation.
Mass and wind luminosity of young Galactic open clusters in Gaia DR2
Authors: Celli S. , Specovius A. , Menchiari S. , Mitchell A. , Morlino G. 
Published: June 2024

Context. Star clusters constitute a significant part of the stellar population in our Galaxy. The feedback processes they exert on the interstellar medium impact multiple physical processes from the chemical to the dynamical evolution of the Galaxy. In addition, young and massive stellar clusters might act as efficient particle accelerators and contribute to the production of cosmic rays.
Aims. We aim at evaluating the wind luminosity driven by the young (< 30 Myr) Galactic open stellar clusters observed by the Gaia space mission. This is crucial for determining the energy channeled into accelerated particles.
Methods. To do this, we developed a method relying on the number, magnitude, and line-of-sight extinction of the stars observed per cluster. Assuming that the stellar mass function follows a Kroupa mass distribution and accounting for the maximum stellar mass allowed by the age and mass of the parent cluster, we conservatively estimated the mass and wind luminosity of 387 local clusters within the second data release of Gaia.
Results. We compared the results of our computation with recent estimates of young cluster masses. With respect to these, our sample is three times more abundant, particularly above a few thousand solar masses. This is of the utmost relevance for predicting the gamma-ray emission resulting from the interaction of accelerated particles. The cluster wind luminosity distribution we obtained extends up to 3 × 1038 erg s−1. This is a promising feature in terms of potential particle acceleration scenarios.
Swarm intelligence for full Stokes dynamic imaging reconstruction of interferometric data
Authors: Mus Alejandro , Müller Hendrik , Lobanov Andrei 
Published: June 2024

Context. In very long baseline interferometry (VLBI), the combination of multiple antennas permits the synthesis of a virtual telescope with a larger diameter and consequently higher resolution than the individual antennas. However, due to the sparse nature of the array, recovering an image from the observed data is a challenging ill-posed inverse problem.
Aims. The VLBI community is interested in not only recovering an image in total intensity from interferometric data, but also in obtaining results in the polarimetric and the temporal domain. Only a few algorithms are able to work in all these domains simultaneously. In particular, the algorithms based on optimization that consider various penalty terms specific to static total intensity imaging, time-variability and polarimetry are restricted to grids in the domain of the objective function. In this work we present a novel algorithm, multiobjective particle swarm optimization (MO-PSO), that is able to recover the optimal weights without any space-gridding, and to obtain the marginal contribution of each of the playing terms.
Methods. To this end, we utilized multiobjective optimization together with particle swarm metaheuristics. We let the swarm of weights converge to the best position.
Results. We evaluate our algorithm with synthetic data sets that are representative for the main science targets and instrumental configuration of the Event Horizon Telescope Collaboration (EHTC) and its planned successors. We successfully recover the polarimetric, static, and time-dynamic signature of the ground truth movie' even with relative sparsity, and a set of realistic data corruptions.
Conclusions. We have built a novel, fast, hyperparameter space gridding-free algorithm that successfully recovers static and dynamic polarimetric reconstructions. Compared to regularized maximum likelihood (RML) methods, it avoids the need for parameter surveys, and it is not limited to the number of pixels, unlike recently proposed multiobjective imaging algorithms. Hence, this technique is a novel useful alternative tool to characterize full Stokes time-(in)dependent signatures in a VLBI data set robustly with a minimal set of user-based choices.
Ground-based image deconvolution with Swin Transformer UNet
Authors: Akhaury U. , Jablonka P. , Starck J.-L. , Courbin F. 
Published: June 2024

Aims. As ground-based all-sky astronomical surveys will gather millions of images in the coming years, a critical requirement emerges for the development of fast deconvolution algorithms capable of efficiently improving the spatial resolution of these images. By successfully recovering clean and high-resolution images from these surveys, the objective is to deepen the understanding of galaxy formation and evolution through accurate photometric measurements.Methods. We introduce a two-step deconvolution framework using a Swin Transformer architecture. Our study reveals that the deep learning-based solution introduces a bias, constraining the scope of scientific analysis. To address this limitation, we propose a novel third step relying on the active coefficients in the sparsity wavelet framework.Results. We conducted a performance comparison between our deep learning-based method and Firedec, a classical deconvolution algorithm, based on an analysis of a subset of the EDisCS cluster samples. We demonstrate the advantage of our method in terms of resolution recovery, generalisation to different noise properties, and computational efficiency. The analysis of this cluster sample not only allowed us to assess the efficiency of our method, but it also enabled us to quantify the number of clumps within these galaxies in relation to their disc colour. This robust technique that we propose holds promise for identifying structures in the distant universe through ground-based images.
A conclusive non-detection of magnetic field in the Am star o Peg with high-precision near-infrared spectroscopy
Authors: Kochukhov O. , Amarsi A. M. , Lavail A. , Ruh H. L. , Hahlin A. , Hatzes A. , Nagel E. , Piskunov N. , Pouilly K. , Reiners A. , Rengel M. , Seemann U. , Shulyak D. 
Published: June 2024

Context. The A-type metallic-line (Am) stars are typically considered to be non-magnetic or to possess very weak sub-G magnetic fields. This view has been repeatedly challenged in the literature; most commonly for the bright hot Am star o Peg. Several studies claim to have detected 1–2 kG field of unknown topology in this object, possibly indicating a new process of magnetic-field generation in intermediate-mass stars.
Aims. In this study, we revisit the evidence of a strong magnetic field in o Peg using new high-resolution spectropolarimetric observations and advanced spectral fitting techniques.
Methods. We estimated the mean magnetic field strength in o Peg from the high-precision CRyogenic InfraRed Echelle Spectrograph (CRIRES+) measurement of near-infrared (NIR) sulphur lines. We modelled this observation with a polarised radiative transfer code, including treatment of the departures from local thermodynamic equilibrium. In addition, we used the least-squares deconvolution multi-line technique to derive longitudinal field measurements from archival optical spectropolarimetric observations of this star.
Results. Our analysis of the NIR S I lines reveals no evidence of Zeeman broadening, ruling out magnetic field with a strength exceeding 260 G. This null result is compatible with the relative intensification of Fe II lines in the optical spectrum, taking into account blending and uncertain atomic parameters of the relevant diagnostic transitions. Longitudinal field measurements on three different nights also yield null results with a precision of 2 G.
Conclusions. This study refutes the claims of kG-strength dipolar or tangled magnetic field in o Peg. This star therefore appears to be non-magnetic, with surface magnetic field characteristics no different from those of other Am stars.
Mechanical Properties and Failure Mode of Proximal Screw Fixation Technique Using Locking Compression Plate for Proximal Interphalangeal Arthrodesis in Horses: An Ex Vivo Study
Authors: de Souza Anderson F. , Pereira César A.M. , Costa Claudio , Fürst Anton , Kümmerle Jan M. , De Zoppa André L.V. 
Published: June 2024

Abstract
Objective The aim of this study was to measure the mechanical properties and failure mode of an ex vivo model of proximal interphalangeal arthrodesis in horses with different methods of proximal screw fixation using a locking compression plate.
Study Design Pastern joint arthrodesis with a 3-hole 4.5-mm narrow locking compression plate was performed on 20 forelimbs of equine cadavers, randomized into four groups based on the fixation method and type of proximal screw used: unicortical cortex, bicortical cortex, unicortical locking, bicortical locking. Single-cycle axial compression testing was conducted until failure. The frequency of implant plastic deformation was recorded. Bone failure analysis was performed through computed tomography examinations and fractal analysis.
Results There were no differences in the analysed mechanical variables and fractal dimension among the groups. Transarticular screws showed a higher frequency of deformation (75%) regardless of the group. Both unicortical locking and bicortical locking groups deformed the plate more frequently.
Conclusion The type of screw used in the proximal hole of the locking compression plate and its method of anchoring in the proximal phalanx do not affect the mechanical properties of pastern arthrodesis in equine cadavers subjected to single-cycle axial compression tests until failure.
Beyond experiential knowledge: a classification of patient knowledge
Authors: Dumez Vincent , L’Espérance Audrey 
Published: June 2024

AbstractPatients’ experiential knowledge is increasingly documented as a valid form of knowledge in the health sector and is often said to be a source of valuable information to complement the knowledge of health professionals. Although this increased recognition is outlined in the health science literature and formalized in certain organizational and clinical contexts, it remains difficult for various actors of the health ecosystem to contour the different forms of knowledge patients acquire through their experience as well as to consider them as essential in co-building care plans and as an asset to build care relationships. The aim of this review is twofold: (1) to challenge the dominant model of knowledge in medicine and healthcare by making the various forms of patient knowledge more explicit and tangible and (2) to provide a better understanding of what experiential knowledge consists of by classifying the various forms of knowledge patient acquire, develop, and mobilize throughout their care journey. A narrative review allows to classify six types of patient knowledge according to their source of learning: embodied, monitoring, navigation, medical, relational, and cultural knowledge. The three main sources of learning, namely the self, the system, and the community grounds patients’ learning process in their health journey.
What young women (aged 24–29 years) in Australia think about self-collection for cervical screening: a brief report
Authors: Zammit Claire M. , Brooks Alexandra , Brotherton Julia M. L. , Nightingale Claire E. 
Published: June 2024

Background In mid-2022 Australia’s National Cervical Screening Program made self-collection of a vaginal sample an option for screening for young women or people with a cervix aged 25 to 29 years for the first time. This study explored what young women thought about, and wanted to know about, self-collection, and what their future screening preferences are. Methods Young women (n = 21), aged 24–29 years, were recruited through social media. Semi-structured interviews explored screening history, screening preferences and thoughts about self-collection. Data were analysed using an a priori coding framework informed by the Theoretical Framework of Acceptability. Results Young women valued the addition of self-collection to the national cervical screening program, believing it to be less invasive and more convenient. However, they also valued the choice to opt for a clinician-collected specimen if preferred. Conclusions Self-collection is a valuable addition to the National Cervical Screening Program. This study suggests that continued efforts are needed to raise awareness of its availability, and improve understanding about its accuracy, the ease of collection, that you still need to engage with a primary healthcare service to access it and that you can still opt for a clinician-collected test.
Rethinking researcher-participant roles
Authors: Guinto Nicanor Legarte , Villaverde Brian D. , Demetrial Amiel Jansen , Maguyon III Aurelio Teodoro 
Published: June 2024

Abstract
Recent studies on language and migration have attempted to address the social injustices stemming from global
disparities in wealth and opportunities. However, there’s a risk of researchers unintentionally reinforcing traditional power
dynamics, positioning themselves in power while reducing participants to mere data sources. Focusing on migrants in precarious
living conditions, whose migration is often a consequence of political and economic upheaval in the origin, this paper
interrogates the role of researchers and the researched with respect to social justice perspectives. We argue that conducting
research on, for, and with such vulnerable migrant populations requires a reflexive understanding of our own positions and
decisions throughout our engagement with participants. We propose that this approach is most effectively executed if we treat
participants as equal partners in knowledge generation and social action, guided by principles of care, empathy, and
unconventional methodologies. Through this, we hope to advocate for migration linguistics that is truly fair, just, and empowering
among migrants.