bluuebunny/crossref_metadata_2025_split huggingface dataset:
A current mode operational transconductance amplifier‐only half/full‐wave rectifier
Authors: Petrović Predrag Boško 
Published: June 2023

AbstractThis letter introduces a novel half/full‐wave rectifier architecture that utilizes only an operational transconductance amplifier (OTA), eliminating the need for external passive components. The proposed circuit can accurately process input current signals with frequencies of up to 1 MHz, within an operating range of ±270 μA. The design exhibits excellent zero‐crossing performance, linearity, and simplicity, making it highly suitable for implementation in modern IC technologies. The impact of non‐idealities and parasitic effects on the circuit performance was thoroughly investigated; however, the absence of passive elements ensured that any parasitic effects remained negligible. The simulation results obtained using 0.18‐μm CMOS technology and a ±0.9 V supply voltage were consistent with theoretical predictions, validating the efficacy of the proposed design.
Synthesis and characterisation of a novel poly(2‐hydroxyethylmethacrylate)‐chitosan hydrogels loaded cerium oxide nanocomposites dressing on cutaneous wound healing on nursing care of chronic wound
Authors: Luo Jingna , Liu Weijun , Xie Qiaoling , He Jianshu , Jiang Liyan 
Published: June 2023

AbstractThis study was designed to establish the composition of wound dressing based on poly(2‐hydroxyethylmethacrylate)‐chitosan (PHEM‐CS) hydrogels‐loaded cerium oxide nanoparticle (CeONPs) composites for cutaneous wound healing on nursing care of the chronic wound. The as‐synthesised PHEM‐CS/CeONPs hydrogels nanocomposites were characterised by using UV–visible spectroscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, X‐ray diffraction, and thermo gravimetric analysis. The influence of PHEM‐CS/CeONPs hydrogels nanocomposites on the gelation time, swelling ratio, in vitro degradation, and mechanical properties was investigated. The as‐prepared PHEM‐CS/CeONPs hydrogels nanocomposites dressing shows high antimicrobial activity against Staphylococcus aureus and Escherichia coli. Similar trends were observed for the treatment of biofilms where PHEM‐CS/CeONPs hydrogels nanocomposites displayed better efficiency. Furthermore, the biological properties of PHEM‐CS/CeONPs hydrogels nanocomposites had non‐toxic in cell viability and excellent cell adhesion behaviour. After 2 weeks, the wounds treated with the PHEM‐CS/CeONPs hydrogels nanocomposite wound dressing achieved a significant closure to 98.5 ± 4.95% compared with the PHEM‐CS hydrogels with nearly 71 ± 3.55% of wound closure. Hence, this study strongly supports the possibility of using this novel PHEM‐CS/CeONPs hydrogels nanocomposites wound dressing for efficient cutaneous wound healing on chronic wound infection and nursing care.
Redox state and interior structure control on the long-term habitability of stagnant-lid planets
Authors: Baumeister Philipp , Tosi Nicola , Brachmann Caroline , Grenfell John Lee , Noack Lena 
Published: June 2023

Context. A major goal in the search for extraterrestrial life is the detection of liquid water on the surface of exoplanets. On terrestrial planets, volcanic outgassing is a significant source of atmospheric and surface water and a major contributor to the long-term evolution of the atmosphere. The rate of volcanism depends on the interior evolution and on numerous feedback processes between the atmosphere and interior, which continuously shape atmospheric composition, pressure, and temperature.
Aims. We explore how key planetary parameters, such as planet mass, interior structure, mantle water content, and redox state, shape the formation of atmospheres that permit liquid water on the surface of planets.
Methods. We present the results of a comprehensive 1D model of the coupled evolution of the interior and atmosphere of rocky exoplanets that combines central feedback processes between these two reservoirs. We carried out more than 280 000 simulations over a wide range of mantle redox states and volatile content, planetary masses, interior structures, and orbital distances in order to robustly assess the emergence, accumulation, and preservation of surface water on rocky planets. To establish a conservative baseline of which types of planets can outgas and sustain water on their surface, we focus here on stagnant-lid planets.
Results. We find that only a narrow range of the mantle redox state around the iron-wüstite buffer allows the formation of atmospheres that lead to long-term habitable conditions. At oxidizing conditions similar to those of the Earth's mantle, most stagnant-lid planets end up in a hothouse regime akin to Venus due to strong CO2 outgassing. At more reducing conditions, the amount of outgassed greenhouse gases is often too low to keep surface water from freezing. In addition, Mercury-like planets with large metallic cores are able to sustain habitable conditions at an extended range of orbital distances as a result of lower volcanic activity.
Quantifying the energetics of molecular superbubbles in PHANGS galaxies
Authors: Watkins E. J. , Kreckel K. , Groves B. , Glover S. C. O. , Whitmore B. C. , Leroy A. K. , Schinnerer E. , Meidt S. E. , Egorov O. V. , Barnes A. T. , Lee J. C. , Bigiel F. , Boquien M. , Chandar R. , Chevance M. , Dale D. A. , Grasha K. , Klessen R. S. , Kruijssen J. M. D. , Larson K. L. , Li J. , Méndez-Delgado J. E. , Pessa I. , Saito T. , Sanchez-Blazquez P. , Sarbadhicary S. K. , Scheuermann F. , Thilker D. A. , Williams T. G. 
Published: June 2023

Context. Star formation and stellar feedback are interlinked processes that redistribute energy, turbulence, and material throughout galaxies. Because young and massive stars form in spatially clustered environments, they create pockets of expanding gas termed superbubbles, which retain information about the physical processes that drive them. As these processes play a critical role in shaping galaxy discs and regulating the baryon cycle, measuring the properties of superbubbles provides important input for galaxy evolution models.
Aims. With the wide coverage and high angular resolution (∼50–150 pc) of the PHANGS–ALMA 12CO (J = 2−1) survey, we can now resolve, identify and characterise a statistically representative number of superbubbles using molecular gas in nearby galaxies.
Methods. We identify superbubbles by requiring spatial correspondence between shells in CO with stellar populations identified in PHANGS–HST. Then, by combining the properties of the stellar populations with the CO, we quantify the energetics of the stars and constrain feedback models. We visually find 325 cavities across 18 PHANGS–ALMA galaxies, 88 of which have clear superbubble signatures (unbroken shells, central clusters, kinematic signatures of expansion). We measure their radii and expansion velocities using CO (2–1) to dynamically derive their ages and the mechanical power driving the bubbles, which we use to compute the expected properties of the parent stellar populations driving the bubbles.
Results. We find consistency between the predicted and derived stellar ages and masses of the stellar populations if we use a supernova (SN) model that injects energy with a coupling efficiency of ∼10%. Not only does this confirm that molecular gas accurately traces superbubble properties, but it also provides key observational constraints for superbubble models. We also find evidence that the bubbles are sweeping up gas as they expand, and speculate that these sites have the potential to host new generations of stars.
Conclusions. This work demonstrates that molecular superbubbles provide novel quantitative constraints on SNe feedback efficiencies and gas clearing times, and represent a promising environment to search for the propagation of star formation, all of which are needed to understand what sets the observed star formation rates in galaxies.
Shape-based clustering of synthetic Stokes profiles using k-means and k-Shape
Authors: Moe Thore E. , Pereira Tiago M. D. , Calvo Flavio , Leenaarts Jorrit 
Published: June 2023

Context. The shapes of Stokes profiles contain a great deal of information about the atmospheric conditions that produced them. However, a variety of different atmospheric structures can produce very similar profiles. Thus, it is important for a proper interpretation of the observations to have a good understanding of how the shapes of Stokes profiles depend on the underlying atmosphere. An excellent tool in this regard is forward modeling, namely, computing and studying synthetic spectra from realistic simulations of the solar atmosphere. Modern simulations routinely produce several hundred thousand spectral profiles per snapshot. With such numbers, it becomes necessary to use automated procedures in order to organize the profiles according to their shape. Here, we illustrate the use of two complementary methods, k-means and k-Shape, to cluster similarly shaped profiles and demonstrate how the resulting clusters can be combined with knowledge of the simulation’s atmosphere to interpret spectral shapes.
Aims. We aim to showcase the use of clustering analysis for forward modeling. In particular, we wish to introduce the k-Shape clustering method to the solar physics community as a complement to the well-known k-means method.
Methods. We generated synthetic Stokes profiles for the Ca II 854.2 nm line using the Multi3D code from a Bifrost simulation snapshot. We then applied the k-means and k-Shape clustering techniques to group the profiles together according to their shape and investigated the within-group correlations of temperature, line-of-sight velocity, and line-of-sight magnetic field strengths.
Results. We show and compare the classes of profile shapes we retrieved from applying both k-means and k-Shape to our synthetic intensity spectra. We then show the structure of the underlying atmosphere for two particular classes of profile shapes retrieved by the clustering and demonstrate how this leads to an interpretation for the formation of those profile shapes. We applied both methods to the subset of our profiles containing the strongest Stokes V signals and we demonstrate how k-Shape can be qualitatively better than k-means at retrieving complex profile shapes when using a small number of clusters.
Adipositas-assoziierte Hypertonie
Authors: Engeli Stefan 
Published: June 2023

ZusammenfassungAdipositas erhöht das Risiko, hypertensive Blutdruckwerte zu entwickeln.
Hypertonie ist einer der bedeutendsten Risikofaktoren für
Gefäßerkrankungen und spielt eine besondere Rolle im Herz, in
den Nieren und im Gehirn. Die Initiierung nichtmedikamentöser und
medikamentöser blutdrucksenkender Maßnahmen hängt
letztlich von der Blutdruckhöhe und vom kardiovaskulären
Gesamtrisiko ab. Der Nutzen aller nichtmedikamentösen und
medikamentösen blutdrucksenkenden Maßnahmen hängt eher
vom Ausmaß der Blutdruckreduktion ab, vermutlich nicht von den
Maßnahmen selber. Eine gut verträgliche Kombinationstherapie mit
mehreren blutdrucksenkenden Arzneimitteln und nichtmedikamentösen
Maßnahmen ist die Therapie der Wahl. In dieser Übersicht werden
die wichtigsten Leitlinienempfehlungen zur Therapie zusammengefasst, spezielle
Implikationen für Patient*innen mit adipositas-assoziierter
Hypertonie lassen sich – auch mangels geeigneter Studien –
daraus aber nicht ableiten.
Point-of-care procalcitonin testing for lower respiratory tract infection in pulmonary outpatient care has limited value
Authors: Raupach David , Joean Oana , Fuge Jan , Welte Tobias , Rademacher Jessica 
Published: June 2023

AbstractLower respiratory tract infections (LRTI) are frequently the reasons for patients to visit their general practitioners or lung specialists; however, physicians tend to prescribe antibiotics less frequently than necessary. A readily available biomarker could help distinguish between viral and bacterial cause of LRTI. The primary objective of our study was to determine the diagnostic accuracy of point-of-care testing (POCT) of procalcitonin (PCT) in identifying bacterial pneumonia in outpatients with LRTI. All patients aged 18 years or older with signs and symptoms of LRTI who visited a respiratory physician were included in the study and their PCT levels were measured. In 110 patients enrolled in the study, three patients (2.7%) had PCT values above the threshold of 0.25 µg/L without proven bacterial infection, in contrast to seven patients with typical radiological signs of pneumonia without elevated POCT PCT levels. The AUC for PCT for the detection of pneumonia was 0.56 (p=0.685). POCT PCT showed limited specificity and sensitivity in distinguishing pneumonia from bronchitis or exacerbation of chronic respiratory diseases. PCT is a marker of severe bacterial infections and not suitable for milder infections in outpatient care.
Impact of High-Fidelity Microvascular Surgery Simulation on Resident Training
Authors: Joy Matthew T. , Applebaum Matthew A. , Anderson William M. , Serletti Joseph M. , Capito Anthony E. 
Published: June 2023

Abstract
Background Microsurgery requires a high level of skill achieved only through repeated practice. With duty-hour restrictions and supervision requirements, trainees require more opportunities for practice outside the operating room. Studies show simulation training improves knowledge and skills. While numerous microvascular simulation models exist, virtually all lack the combination of human tissue and pulsatile flow.
Methods The authors utilized a novel simulation platform incorporating cryopreserved human vein and a pulsatile flow circuit for microsurgery training at two academic centers. Subjects performed a standardized simulated microvascular anastomosis and repeated this task at subsequent training sessions. Each session was evaluated using pre- and postsimulation surveys, standardized assessment forms, and the time required to complete each anastomosis. Outcomes of interest include change in self-reported confidence scores, skill assessment scores, and time to complete the task.
Results In total, 36 simulation sessions were recorded including 21 first attempts and 15 second attempts. Pre- and postsimulation survey data across multiple attempts demonstrated a statistically significant increase in self-reported confidence scores. Time to complete the simulation and skill assessment scores improved with multiple attempts; however, these findings were not statistically significant. Subjects unanimously reported on postsimulation surveys that the simulation was beneficial in improving their skills and confidence.
Conclusion The combination of human tissue and pulsatile flow results in a simulation experience that approaches the level of realism achieved with live animal models. This allows plastic surgery residents to improve microsurgical skills and increase confidence without the need for expensive animal laboratories or any undue risk to patients.
Preoperative Imaging Mapping of DIEP Perforators and Intraoperative Selection: Does It Correlate?
Authors: Gravina Paula , Singh Aspinder , Conlon Christopher , Spiegel Aldona 
Published: June 2023

Abstract
Background Preoperative imaging prior to deep inferior epigastric perforator (DIEP) flap harvest is a common practice to locate perforators and identify aberrant anatomy.
Methods We report a retrospective review of 320 consecutive patients who underwent preoperative computed tomographic angiography (CTA) or magnetic resonance angiography prior to DIEP flap breast reconstruction. The locations relative to the umbilicus of preoperatively identified perforators were compared with the selected intraoperative perforators. The diameter of all intraoperative perforators was also measured.
Results Across the 320 patient, 1,833 potentially suitable perforators were identified on preoperative imaging. A total of 564 of the 795 perforators selected intraoperatively for DIEP flap harvest were within 2 cm of a predicted perforator, for a rate of 70.1%. The size of the perforator was unrelated to the detection rate.
Conclusion We were able to demonstrate a sensitivity of 70% of clinically selected DIEP perforators identified on preoperative imaging in this large series. This contrasts with the nearly 100% predictive value reported by others. Continued reporting of findings and methods of measuring are needed to improve the practical efficacy of CTA and raise awareness about the limitations of CTA, despite its well-documented usefulness.
Remote Back Strain: A Strategy for Modulating the Reactivity of Triarylboranes
Authors: Ogoshi Sensuke , Hoshimoto Yoichi , Sakuraba Mahiro , Morishita Taichi , Hashimoto Taiki 
Published: June 2023

AbstractA strategy for modulating the Lewis acidity of triarylboranes is proposed based on the concept of remote back strain. Steric repulsion and noncovalent interactions, both generated between the aryl meta-substituents of triarylboranes, are found to be critical for determining the strength of the remote back strain. Applying this concept, we synthesized B[2,6-F2-3,5-(TMS)2-C6H]3 and the liquid B[2,6-F2-3,5-(allyl)2-C6H]3 and we demonstrated their superior catalytic activity for the hydrogenation of quinoline relative to B(C6F5)3 or B(2,6-F2C6H3)3. Moreover, we established the first example of the catalytic hydrogenation of quinoline by using B[2,6-F2-3,5-(allyl)2-C6H]3 in the presence of a gaseous 1:1:1 molar mixture of H2, CO, and CO2.
Welcome to the fertility clinic of the future! Using speculative design to explore the moral landscape of reproductive technologies
Authors: Willems W. , Heltzel A. , Nabuurs J. , Broerse J. , Kupper F. 
Published: June 2023

AbstractThe evolving field of reproductive technologies greatly alters our practices of conception and pregnancy. It is thus crucial to develop such innovations in a democratic and sustainable manner through public participation. To date, participation has mostly focused on patients or health professionals deliberating on technological risks, benefits, costs, and healthcare experiences. Thereby, the opportunity is missed to consider broader social and moral implications. Speculative design has been presented as a promising way to open up deliberation on the impacts of new technologies. In this study, speculative design was used to gain insight into citizens’ views and concerns about the social and moral implications of the new reproductive technologies. Six themes of concern were found: the rights of the unborn; access and equality; social implications of individual choices; society as a community; ecology; and the value of wonder. Notably, the latter two issues are not commonly described in the participatory literature on reproductive technologies, indicating that speculative design is suitable for broadening the debate by including issues that have not been addressed yet. Furthermore, the study brought insight into the motivations and complex values that lie behind arguments in which the naturalness of reproductive practices is emphasized. A point of critical reflection is that to broaden the range of reflections probed by speculative design even more, both the designers and the audiences should become more diverse. If this is achieved, it is suggested using speculative design in the context of public deliberation with a more direct influence on innovation trajectories and as a means for the public to become more skilled in critically engaging with imagined futures.
High-speed rotor for microparticle impact studies
Authors: De la Cruz Abraham , Achtnich Timon , Décosterd Emile , Sevy Eric T. , Asplund Matthew C. , Austin Daniel E. 
Published: June 2023

We report on the design, construction, and testing of a high-speed rotor intended for use in hypervelocity microparticle impact studies. The rotor is based on a four-wing design to provide rotational stability and includes flat “paddle” impact surfaces of ∼0.5 cm2 at the tips of each wing. The profile of each wing minimizes the variation in tensile forces at any given rotational speed. The rotor was machined using titanium (grade 5) and operated in high vacuum using magnetically levitated bearings. Initial experiments were run at several speeds up to 100 000 rpm (revolutions per minute), corresponding to a tip speed of 670 m/s. Elongation at the wing tips as a function of rotational speed was measured with a precision of several micrometers using a focused diode laser and found to agree with an elastic modulus of 1.16 GPa for the rotor material. Applications to microparticle impact experiments are discussed.
Presentational clefts, existentials and information structure
Authors: Carlier Anne , Lahousse Karen 
Published: June 2023

Abstract
Presentational c’è / il y a clefts in Italian and French have been argued to differ from the existential and locative constructions they derive from by their syntactic, semantic and information-structural properties: they would invariably convey sentence-focus. In the present study, we argue for a unitary treatment of all c’è / il y a constructions, whose meaning is locational-existential, and whose discourse function is to present the nominal argument as non-topical. This analysis de-particularizes presentational clefts with respect to locative and existential c’è / il y a constructions and accounts for the fact that, rather than conveying invariably sentence-focus, they present the same variety of information structure articulations as the non-cleft c’è / il y a constructions.
The Finnish existential clause
Authors: Huumo Tuomas 
Published: June 2023

Abstract
I analyze the case marking (nominative vs. partitive) and quantification of the Finnish existential S argument (Se). I focus on Se arguments quantified by mass quantifiers (e.g. paljon ‘much’) and number quantifiers (e.g. usea ‘many’). I discuss grammatical, semantic and discourse functions of the Se argument, with an emphasis on the aspectual and quantificational meanings expressed by the construction. I argue that a quantified Se designates a bounded quantity even when marked with the partitive case, which otherwise expresses unbounded quantity. This has important repercussions to the clause-level aspectual meaning of the existential construction, especially in uses where the aspectual profile of the clause is based on nominal aspect and thus on the quantity expressed by the Se.
Partition and existence
Authors: Lena Ludovica 
Published: June 2023

Abstract
This contribution concerns Chinese biclausal constructions introduced by the existential verb yǒu and including the bare noun rén ‘person, people’ in the pivotal position. Building upon spoken corpus data, I show that the co-occurrence of an individual-level predicate in the coda exerts a coercion on the reading of the pivot which is then interpreted as generic-partitive. I argue that, in such cases, the yǒu-construction is not used to signal referent unidentifiability. Rather, the biclausal pattern allows to prevent the bare noun rén from acquiring the universal interpretation (‘all people’) that it receives by default in the preverbal-subject position. These sentences are used to express the literal existence, namely the existence of a “subtype of people”.
Is the French verb manquer ‘lack, miss’ a negative existential predicate?
Authors: Van de Velde Danièle 
Published: June 2023

Abstract
This study treats French existential manquer ‘to lack’ as a positive predicate. I identify two syntactic constructions: a “locative alternating” one and an impersonal one (with a personal variant). I argue that the argument determiner constraints of manquer in the first construction can be explained by postulating an incorporated quantifier. The same assumption is valid for the second construction in spite of its explicit quantifier. Both constructions assert existence, but the existence in insufficient quantity (in reference to a norm), the inexistence / absence being a borderline case of insufficiency. The two constructions differ in that the second one, where manquer appears in the impersonal construction, adds to the simple idea of quantitative insufficiency the exact measure of the quantitative inferiority.