bluuebunny/crossref_metadata_2025_split huggingface dataset:
A multiwavelength study of the W33 Main ultracompact HII region
Authors: Khan S. , Pandian J. D. , Lal D. V. , Rugel M. R. , Brunthaler A. , Menten K. M. , Wyrowski F. , Medina S.-N. X. , Dzib S. A. , Nguyen H. 
Published: May 2022

Aims. The dynamics of ionized gas around the W33 Main ultracompact HII region is studied using observations of hydrogen radio recombination lines and a detailed multiwavelength characterization of the massive star-forming region W33 Main is performed.
Methods. We used the Giant Meterwave Radio Telescope (GMRT) to observe the H167α recombination line at 1.4 GHz at an angular resolution of 10″, and Karl. G. Jansky Very Large Array (VLA) data acquired in the GLOSTAR survey that stacks six recombination lines from 4–8 GHz at 25″ resolution to study the dynamics of ionized gas. We also observed the radio continuum at 1.4 GHz and 610 MHz with the GMRT and used GLOSTAR 4-8 GHz continuum data to characterize the nature of the radio emission. In addition, archival data from submillimeter to near-infrared wavelengths were used to study the dust emission and identify young stellar objects in the W33 Main star-forming region.
Results. The radio recombination lines were detected at good signal to noise in the GLOSTAR data, while the H167α radio recombination line was marginally detected with the GMRT. The spectral index of radio emission in the region determined from GMRT and GLOSTAR shows the emission to be thermal in the entire region. Along with W33 Main, an arc-shaped diffuse continuum source, G12.81–0.22, was detected with the GMRT data. The GLOSTAR recombination line data reveal a velocity gradient across W33 Main and G12.81–0.22. The electron temperature is found to be 6343 K and 4843 K in W33 Main and G12.81–0.22, respectively. The physical properties of the W33 Main molecular clump were derived by modeling the dust emission using data from the ATLASGAL and Hi-GAL surveys and they are consistent with the region being a relatively evolved site of massive star formation. The gas dynamics and physical properties of G12.81–0.22 are consistent with the HII region being in an evolved phase and its expansion on account of the pressure difference is slowing down.
Dynamical evolution of a self-gravitating planetesimal disk in the distant trans-Neptunian region
Authors: Emel’yanenko V. V. 
Published: May 2022

Aims. We study the dynamical evolution of a system consisting of the giant planets and a massive planetesimal disk over the age of the Solar System. The main question addressed in this study is whether distant trans-Neptunian objects could have come about as a result of the combined action of planetary perturbations and the self-gravity of the disk.
Methods. We carried out a series of full N-body numerical simulations of gravitational interactions between the giant planets and a massive outer disk of planetesimals.
Results. Our simulations show that the collective gravity of the giant planets and massive planetesimals produces distant trans-Neptunian objects across a wide range of the initial disk mass. The majority of objects that survive up through the age of the Solar System have perihelion distances of q >  40 au. In this region, there is a tendency toward a slow decrease in eccentricities and an increase in perihelion distances for objects with semimajor axes a >  150 au. Secular resonances between distant planetesimals play a major role in increasing their perihelion distances. This explains the origin of Sedna-type objects. In our integrations for the age of the Solar System, we registered times with both high and low clustering of longitudes of perihelion and arguments of perihelion for objects with q >  40 au, a >  150 au. The resulting distribution of inclinations in our model and the observed distribution of inclinations for distant trans-Neptunian objects have similar average values of around 20°.
Conclusions. Distant trans-Neptunian objects are a natural consequence in the models that include migrating giant planets and a self-gravitating planetesimal disk.
Epidemiological Study of Acute Unintentional Poisoning Among Children
in Iran
Authors: Tarhani Fariba , Nezami Alireza , Heidari Ghobad , Hosseinizadeh-salavati Nazanin 
Published: May 2022

AbstractThe occurrence of different types of poisoning and early diagnosis is important
for therapeutic measures. In this study, we investigate the epidemiological
causes of acute poisoning in children.In this retrospective descriptive study, children presented with acute poisoning
during 2010–2019 to Shahid Madani Hospital were included. The Electronic
Medical Record system of the hospital was accessed to obtain the data of the
patients. The data included was demographic information, type of poisoning,
clinical findings, complications, duration of hospitalization, parents’
education status, and mortality status.Of 336 patients included in the study, the mean age of patients was
4.90±3.27 years (range: 1–12 years). There was a significant
correlation between the age of the child and the type of poisoning,
p=0.001. The most frequent age group was 5 years and less
(69.6%). The most frequent sex group was male (58.6%). However,
there was no significant correlation between the sex of the child and the type
of poisoning. Parents’ education and ICU admission were also associated
significantly with the type of poisoning, p=0.001, respectively. The
most common type of poisoning in children was medication (60.6%) which
was mainly due to methadone. The mortality rate in the study was
1.2%.Our study showed that pharmacological drugs are the main cause of poisoning in
our population. Age of the children is likely to be associated with the type of
poisoning however, no gender difference was found in this regard was found in
our study.
Nicht nur multimodal, sondern auch interdisziplinär: Ein
Konzept für fächerübergreifende Zusammenarbeit in der
Rehabilitation des Post-COVID-Syndroms
Authors: Kupferschmitt Alexa , Etzrodt Franziska , Kleinschmidt Judit , Köllner Volker 
Published: May 2022

ZusammenfassungAktuell (Mitte März 2022) haben sich über 17 Mio. Menschen in
Deutschland mit dem SARS-CoV-2-Virus infiziert. Es ist damit zu rechnen, dass
5–10% der Infizierten ein klinisch relevantes Post-COVID-Syndrom
entwickeln. Häufigste Symptome sind Fatigue, Dyspnoe und kognitive
Einschränkungen. Eine kausale Therapie steht aktuell nicht zur
Verfügung, es mehren sich jedoch die Hinweise, dass ein multimodaler
Behandlungsansatz mit psychotherapeutischen Elementen erfolgversprechend ist.
Post-COVID stellt somit eine aktuelle Herausforderung für das
Gesundheitssystem und speziell die Rehabilitation dar. In diesem Beitrag wird
ein duales internistisch-psychosomatisches Rehabilitationskonzept beschrieben.
Kernelemente sind eine verhaltenstherapeutisch orientierte
störungsspezifische Psychotherapiegruppe sowie an die individuelle
Leistungsfähigkeit angepasste und langsam aufbauende Bewegungstherapie.
Ziele sind Unterstützung bei der Krankheitsverarbeitung und eine
Verbesserung der Leistungsfähigkeit. Eingesetzt werden u. a.
Interventionen basierend auf der ACT und dem Avoidance-Endurance-Konzept. Hinzu
kommen indikativ Atemtherapie, kognitives Training sowie Ernährungs- und
Sozialberatung. Die internistische Mitbetreuung gibt den Patienten die
Sicherheit, sich auf das körperliche Trainingsprogramm einlassen zu
können. Die bisherigen Erfahrungen zeigen, dass das Konzept von den
Betroffenen gut akzeptiert wird und dass die angestrebten Behandlungsziele
erreicht werden können.
Cardiovascular Considerations in Patients with Liver Cirrhosis
Authors: Vogt Braden , Chu Antony F. 
Published: May 2022

AbstractLiver cirrhosis is a significant cause of morbidity and mortality and can result in alterations to cardiac function. Patients with cirrhosis may develop a hyperdynamic circulation. Furthermore, systolic or diastolic function may occur, although diastolic function is more common. The transjugular intraheptic portosystemic shunt (TIPS) is an increasingly prominent procedure to treat portal hypertension that can result in transient worsening of hyperdynamic circulation. TIPS can be complicated by cardiac decompensation, with diastolic dysfunction playing a key role. Investigators developed an algorithm to stratify risk of cardiac decompensation after TIPS using natriuretic peptide levels and echocardiography. Eighty percent of patients with aortic stenosis decompensated after TIPS in one cohort, but this requires further study before it is considered a contraindication. Cirrhosis has also been linked to development of atrial fibrillation, although data remain mixed. The first-choice anticoagulant should be direct oral anticoagulants, as studies show superior outcomes to warfarin. QTc prolongation is often seen in patients with cirrhosis, theoretically predisposing to ventricular arrhythmias, however the clinical significance remains unclear. The impact of TIPS on arrhythmia is understudied, but small cohorts found high rates. Overall, cirrhosis can have significant impacts of cardiac function and clinicians must be aware of these alterations.
Towards a socially fair green transition in the EU? An analysis of the Just Transition Fund using the Multiple Streams Framework
Authors: Kyriazi Anna , Miró Joan 
Published: May 2022

AbstractThe Just Transition Fund was introduced in 2021 as part of the European Union’s Green New Deal and aims to assuage some of the painful social consequences of the green transition. Relying on the Multiple Streams Framework, this article reconstructs the JTF’s institution. It identifies 2018–2019 as a key conjuncture in the European Union when various social, ideational and political preconditions enabling policy innovation converged. Subsequently, the need to publicly finance a just transition emerged in relation to some Eastern European states’ reluctance to work towards the 2050 climate neutrality target. After a Polish-led configuration of actors propelled the JTF onto the agenda, the von der Leyen Commission assumed the task of designing a less transparently self-serving policy instrument necessary to garner wider political support. The final JTF emerged from the interplay between two policy entrepreneurs in the context of the negotiations on the 2021–2027 European Union budget and the dislocations provoked by the COVID-19 crisis.
Realization of broadband terahertz metamaterial absorber using an anti-symmetric resonator consisting of two mutually perpendicular metallic strips
Authors: Wang Ben-Xin , Xu Chongyang , Zhou Haiquan , Duan Guiyuan 
Published: May 2022

This paper presents a scheme to achieve a broadband metamaterial absorber in the terahertz region, which is consisted of an anti-symmetric T-shaped resonator (formed by two mutually perpendicular metallic strips) on top of a metallic back layer separated by an insulator dielectric layer. The anti-symmetric T-shaped resonator can have a strong electromagnetic interaction with the incident beam, resulting in four different absorption peaks having adjacent frequencies, and the superposition effect of these adjacent peaks produces a broadband absorption. The resonance bandwidth of greater than 80% absorption can have 0.58 THz ranging from 1.54 to 2.12 THz, and its relative resonance bandwidth is 31.69%. The resonance bandwidth and relative resonance bandwidth can be scaled by controlling the parameters of two mutually perpendicular metallic strips in the anti-symmetric T-shaped resonator. Moreover, the parameter optimization of the anti-symmetric T-shaped resonator can realize five discrete absorption peaks with adjacent frequencies, and their combined effect can obtain not only broadband absorption but also a greater absorption bandwidth compared with the case of broadband absorption having four absorption peaks.
Effects of transforming growth factor β1 on steroidogenesis of feline granulosa cells cultured
Authors: Maylem Excel R. S. , Spicer Leon J. 
Published: May 2022

Context Little is known about the hormonal regulation of feline ovarian granulosa cell proliferation and steroidogenesis. Aims To determine if transforming growth factor β1 (TGFB1), activin, epidermal growth factor (EGF), follicle stimulating hormone (FSH), luteinizing hormone (LH), melatonin, and insulin-like growth factor 1 (IGF1) regulate granulosa cell steroidogenesis and proliferation in cats, three experiments were conducted in winter season. Methods Granulosa cells were isolated and treated in vitro with various hormones in serum-free medium for 48 h after an initial 48 h plating in 10% fetal calf serum. Key results Treatment with IGF1 and FSH increased (P < 0.05) estradiol production by 2.3- and 1.33-fold, respectively. In contrast, TGFB1 blocked (P < 0.05) IGF1-induced estradiol production and inhibited FSH-induced estradiol production by 60%. Combined with FSH or FSH plus IGF1, TGFB1 inhibited (P < 0.05) cell proliferation, whereas TGFB1 increased progesterone production by 2.8-fold in the presence of FSH plus IGF1. EGF decreased (P < 0.05) FSH plus IGF1-induced estradiol production by 89% but did not affect progesterone production or cell numbers. Activin did not affect (P > 0.10) cell numbers or steroidogenesis in the presence of FSH plus IGF1. Melatonin and LH decreased (P < 0.05) estradiol production 53% and 59%, respectively, without affecting progesterone production or cell proliferation. Conclusions The present study has identified TGFB1 as a major regulator of feline ovarian function, in addition to EGF, IGF1, melatonin, LH and FSH. Implications These studies will provide useful information for future development of fertility control in feline species.
Design principles of PI(4,5)P2clustering under protein-free conditions: Specific cation effects and calcium-potassium synergy
Authors: Han Kyungreem , Kim Soon Ho , Venable Richard M. , Pastor Richard W. 
Published: May 2022

SignificanceClustering of phosphatidylinositol 4,5-bisphosphate (PIP2) with proteins into what are known as “PIP2rafts” is a critical component of intracellular signaling, yet little is known about PIP2clusters at the atomic level. Using molecular dynamics simulations and network theory, this paper shows that Ca2+generates large clusters by linking PIP2dimers already formed by doubly charged P4/P5 phosphates, while monovalent cations form smaller and less-stable clusters by adding PIP2monomers preferentially via weaker interactions with P4/P5 (for Na+) or with glycerol P1 (for K+). Synergy arises between K+and Ca2+because each ion forms linkages with different phosphates, thereby giving clusters more ways to grow. This explains why Ca2+is pumped into cells by ion channels to form PIP2rafts.
Nominal reduplication in cross-linguistic perspective
Authors: Mattiola Simone , Barotto Alessandra 
Published: May 2022

AbstractThis paper aims at investigating the semantics of nominal reduplication cross-linguistically. Nominal reduplication is treated as an iconic morphological device expressing functions that have something to do with plurality. Nevertheless, in the languages of the world, other types of functions are attested as well, which seem to pivot around different notions like conceptual similarity, heterogeneity, combinations of them, or even possession. Based on a large-scale cross-linguistic analysis, we provide a typology of nominal reduplication considering the range of semantic functions and the type of reduplicative patterns. We argue that the attested variation clearly points to a common semantic core underlying the various functions, and this core can be identified in some modification of the degree and type of referentiality. Finally, the attested tendencies and correlations may shed new light on the role of iconicity in explaining the connection between reduplicated nouns and their functions.
Revealing the dissociation channels of mixed photons for

H2+

in bicircularly polarized laser pulses
Authors: Cao Pengkun , Zhang Qingbin , Wang Run , Liu Kunlong , Lu Peixiang 
Published: May 2022

Abstract
We theoretically study the dissociation of

H

2

+

driven by the bicircularly polarized (BiCP) laser pulses. It is shown that there is a possibility for the molecule dissociating through the mixed-photon channels, in which the system simultaneously absorbs multiple photons of different frequencies from the BiCP pulses. Setting the frequency ratios of 1:2 and 1:3 for the BiCP pulses reveals the mixed-photon dissociation channels from the interference patterns in the angle-resolved kinetic energy spectra. In addition, by applying the wave packet interference approach, we show that one can further estimate the fragment yield ratios between different dissociation channels that lead to the same kinetic energy.
Opportunities and challenges of low-dimensional hybrid metal halides in white light-emitting diodes
Authors: Mo Qionghua , Shi Yingrui , Cai Wensi , Zhao Shuangyi , Ying Yuansong , Zang Zhigang 
Published: May 2022

Abstract
Optically pumped white-light emitting diodes (WLEDs), including down conversion phosphors and blue/ultraviolet chips have attracted considerable attention in the solid-state lighting. However, commercial WLEDs contain massive rare-earth elements, which may suffer issues of unsustainability, potential price increasing due to insufficient supply. Thus, it is important to explore rare-earth-free light emitters with a broadband emission, a high photoluminescence quantum yield (PLQY) and an excellent stability. Recently, low-dimensional hybrid metal halides have received remarkable progress in WLEDs due to their high PLQY, ultra-broadband emission and easy synthetic procedures. In this review, the synthesis methods of low-dimensional hybrid metal halides are given followed by the discussions of their photoluminescence mechanisms. After that, low-dimensional hybrid metal halides with diversity colors including blue/blue-violet, green, yellow/orange, red/near-infrared are summarized. Specially, white light-emitting diodes based on low-dimensional metal hybrid halides will be reviewed. Finally, the perspective of the evolutions and challenges, the current limitations of the materials WLEDs are discussed, aiming to point of the inspirational outlook of their future development directions.
Effect of anti-solvents on the performance of solar cells based on two-dimensional Ruddlesden–Popper-phase perovskite films
Authors: Zhou Chun-Liang , Ma Wen-Bo , Zhang Zhen-Long , Mao Yan-Li 
Published: May 2022

Abstract
The anti-solvent method is one of the main methods used to prepare two-dimensional (2D) Ruddlesden–Popper (RP)-phase perovskite (PVK) films. To investigate the effect of anti-solvent type on the performance of solar cells based on RP-phase PVK films, three kinds of solvents, toluene (TL), ethyl acetate (EA) and chlorobenzene (CB), were used to prepare 2D RP-phase PVK of GA2MA4Pb5I16. The results display that solar cells based on a 2D PVK layer formed with CB present better performance than those with TL and EA. The results of several investigations show that PVK films formed with CB present lower trap density, longer lifetime, no pinholes and smoother surfaces compared with those formed with TL and EA. This demonstrates that CB is the optimal anti-solvent for the preparation of 2D RP PVK solar cells.
Research on optimization method of capacitance tomography based on contribution degree analysis
Authors: Ku Shuaichao , Gao Heming , Jian Xiaohu , Liao Zhongyu 
Published: May 2022

Abstract
The Landweber algorithm is limited in its use in further applications due to its problems of semi-convergence and slow reconstruction speed. To solve the above issues, this paper first analyzes the causes of the semi-convergence characteristic of the Landweber algorithm from the perspective of the negative sensitivity field. Second, a method of data screening based on a contribution degree analysis is proposed, to weaken the influence of negative sensitivity fields on the semi-convergence characteristic of the algorithm. Then, based on this method, valid capacitance data are selected from the original capacitance data. Finally, the reconstructed results of the Landweber algorithm with the valid capacitance data and original capacitance data are evaluated, by taking the correlation coefficient and computation time as evaluation criteria. The results indicate that the new method effectively suppresses the semi-convergence characteristic of the algorithm, improves the convergence effect of the algorithm, and increases the image reconstruction quality and speed.
Evaluation of collision/reaction gases in single-particle ICP-MS for sizing selenium nanoparticles and assessment of their antibacterial activity
Authors: Freire Bruna Moreira , Cavalcanti Yasmin Tavares , Lange Camila Neves , Pieretti Joana Claudio , Pereira Rodrigo Mendes , Gonçalves Marcelly Chue , Nakazato Gerson , Seabra Amedea Barozzi , Batista Bruno Lemos 
Published: May 2022

Abstract
Selenium nanoparticles (SeNPs) have recently attracted attention because they combine the benefits of Se and lower toxicity compared to other chemical forms of this element. In this study, SeNPs were synthesized by a green method using ascorbic acid as the reducing agent and polyvinyl alcohol as stabilizer. The nanoparticles were widely characterized. To determine the total concentration of Se by ICP-MS, several isotopes and the use of He as collision gas were evaluated, which was effective in minimizing interferences. A method for sizing SeNPs by single particle ICP-MS (SP-ICP-MS) was developed. For this purpose, He and H2 were evaluated as collision/reaction gases, and the second one showed promising results, providing an average diameter of 48 nm for the SeNPs. These results agree with those obtained by TEM (50.1 nm). Therefore, the SP-ICP-MS can be implemented for characterizing SeNPs in terms of size and size distribution, being an important analytical tool for Se and other widely studied nanoparticles (e.g. Ag, Au, Ce, Cu, Fe, Zn). Finally, the antibacterial activity of SeNPs was assessed. The SeNPs showed bacteriostatic activity against three strains of Gram-positive bacteria and were particularly efficient in inhibiting the growth E. faecalis even at very low concentrations (MIC < 1.4 mg l−1). In addition, a bactericidal activity of SeNPs against S. aureus was observed. These nanoparticles may have potential application in pharmaceutical industry, biomedicine and agriculture.
One decade of quantum optimal control in the chopped random basis
Authors: Müller Matthias M , Said Ressa S , Jelezko Fedor , Calarco Tommaso , Montangero Simone 
Published: May 2022

AbstractThe chopped random basis (CRAB) ansatz for quantum optimal control has been proven to be a versatile tool to enable quantum technology applications such as quantum computing, quantum simulation, quantum sensing, and quantum communication. Its capability to encompass experimental constraints—while maintaining an access to the usually trap-free control landscape—and to switch from open-loop to closed-loop optimization (including with remote access—or RedCRAB) is contributing to the development of quantum technology on many different physical platforms. In this review article we present the development, the theoretical basis and the toolbox for this optimization algorithm, as well as an overview of the broad range of different theoretical and experimental applications that exploit this powerful technique.