bluuebunny/crossref_metadata_2025_split huggingface dataset:
Uterine lumen fluid is metabolically semi-autonomous
Authors: Simintiras Constantine A. , Drum Jessica N. , Liu Hongyu , Sofia Ortega M. , Spencer Thomas E. 
Published: March 2022

AbstractUterine lumen fluid (ULF) is central to successful pregnancy establishment and maintenance, and impacts offspring wellbeing into adulthood. The current dogma is that ULF composition is primarily governed by endometrial glandular epithelial cell secretions and influenced by progesterone. To investigate the hypothesis that ULF is metabolically semi-autonomous, ULF was obtained from cyclic heifers, and aliquots incubated for various durations prior to analysis by untargeted semi-quantitative metabolomic profiling. Metabolite flux was observed in these ULF isolates, supporting the idea that the biochemical makeup of ULF is semi-autonomously dynamic due to enzyme activities. Subsequent integrative analyses of these, and existing, data predict the specific reactions underpinning this phenomenon. These findings enhance our understanding of the mechanisms leading to pregnancy establishment, with implications for improving fertility and pregnancy outcomes in domestic animals as well as women.
Isolated molybdenum-based microporous POMs for selective adsorption of gases
Authors: Deng Lan , Lin Rong-Yan , Zhou Zhao-Hui 
Published: March 2022

Syntheses of POMOFs are related to pH values in solutions. Gas adsorptions indicate that 1 is a potential CO2 adsorbent. 13C NMR and UV-vis spectra can supply further evidences of the isolated Mo8 and Mo2 species.
Health status assessment of smart meters based on variable weight and index cloud matter‐element model
Authors: Xing Xiaomin , Tan Jiwen , Li Yitao , Zheng Zixuan 
Published: March 2022

AbstractSmart meters are one of the crucial terminals in the construction of smart grids, and it is necessary to assess their health status to prevent failures. Based on a hierarchical evaluation index system, this study improved the entropy method and adopted a combined weighting method to integrate subjective and objective weights. The authors constructed an index cloud matter‐element model to develop the extensibility of the matter element and used the correlation between the level and index clouds to evaluate the health status of smart meters. Here, the level cloud model and the index cloud model reflected the fuzziness of the boundary of the health level and the uncertainty of the sampling data of indexes, respectively. Based on the theory of constant weight decision and variable weight, the weight was adjusted dynamically by combining the real‐time operation data of the entropy method, and the evaluation results were corrected in real time to elucidate the effect of extreme changes and unhealthy conditions on smart meters. Verification of the calculation example demonstrated accurate evaluation using the method in this study, and the maintenance schedule could be adjusted reasonably.
Spectrum sensing and resource allocation for 5G heterogeneous cloud radio access networks
Authors: Safi Hossein , Montazeri Ali Mohammad , Rostampoor Javane , Parsaeefard Saeedeh 
Published: March 2022

AbstractIn this paper, the problem of opportunistic spectrum sharing for the next generation of wireless systems empowered by the cloud radio access network (C‐RAN) is studied. More precisely, low‐priority users employ cooperative spectrum sensing to detect a vacant portion of the spectrum that is not currently used by high‐priority users. The authors' aim is to maximize the overall throughput of the low‐priority users while guaranteeing the quality of service of the high‐priority users. This objective is attained by optimally adjusting spectrum sensing time, with respect to target probabilities of detection and false alarm, as well as dynamically allocating C‐RAN resources, that is, powers, sub‐carriers, remote radio heads, and base‐band units. To solve this problem, which is non‐convex and NP‐hard, a low‐complex iterative solution is proposed. Numerical results demonstrate the necessity of sensing time adjustment as well as effectiveness of the proposed solution.
Effect of barrier thickness of Polytetrafluoroethylene on the Direct Current breakdown characteristics of liquid nitrogen
Authors: Xiang Bin , Gao Lei , Zhang Jiahui , Zhang Qi , Liu Zhiyuan , Geng Yingsan , Wang Jianhua , Tu Youping 
Published: March 2022

AbstractWhen high‐temperature superconducting (HTS) tapes in high voltage DC HTS devices are quenched, amounts of thermal bubbles are generated in liquid nitrogen (LN2) that will reduce the insulation strength greatly. Especially when resistive‐type superconducting fault current limiters meet a short‐circuit fault, the insulation strength of the LN2 decreased significantly due to the thermal bubbles and electrothermal pressure. Solid insulating barriers can improve the insulation strength of the LN2. The objective of this study is to obtain the effect of barrier thickness on the DC dielectric breakdown characteristics of LN2. Insulating barrier Polytetrafluoroethylene with three different thicknesses were tested. Three types of electrodes such as rod‐plane, needle‐plane, and plane‐plane were applied. The results showed that the barriers can increase the negative and positive breakdown voltage both with and without thermal bubbles in a slightly non‐uniform field (SNF) and non‐uniform field (NF). For the SNF, the DC breakdown voltage is higher when the barrier is thinner. The effect of the barrier thickness in the NF is lower than that in the SNF field. For the NF, the positive breakdown voltage is higher when the barrier is thicker.
Distributed joint target detection, tracking and classification via Bernoulli filter
Authors: Li Gaiyou , Wei Ping , Battistelli Giorgio , Chisci Luigi , Gao Lin , Farina Alfonso 
Published: March 2022

AbstractThis paper aims to solve the problem of distributed joint detection, tracking and classification (D‐JDTC) of a target on a peer‐to‐peer sensor network. The target can be present or not, can belong to different classes, and depending on its class can behave according to different kinematic modes. Accordingly, it is modelled as a suitably extended Bernoulli random finite set (RFS) uniquely characterized by existence, classification, class‐conditioned mode and class & mode‐conditioned state probability distributions. Existing algorithms have been devised to perform target JDTC based on a single sensor and can only be easily extended to multiple sensors in a centralized configuration, wherein a fusion centre gathers measurements from all sensors. In this paper, by designing a suitable rule for fusing local posteriors that convey information on target existence, class, mode and state from different sensor nodes, a novel scalable and fault‐tolerant D‐JDTC Bernoulli filter is proposed, and its performance is evaluated by means of simulation experiments.
Enhancing SEM signature via bistatic radar configuration of small bisectors
Authors: Aldhubaib Faisal 
Published: March 2022

AbstractThe paper assesses the feasibility of finding bistatic directions of minimum bisectors subject to resonant frequency and polarisation diversities to improve the robustness of the resonance signature when extracted from the late time radar response. The general approach consists of three assessments, where the first assessment utilises the scattering frequency data (non‐coherent) to determine if there are bistatic directions of small bisectors per reference resonant frequency and polarisation basis. The second assessment evaluated the correlation between the two targets' incident and scattering directions and confirmed that some directions enhanced the discriminative potential. The third assessment utilised the cumulative sum and the extracted resonant distribution from the time data (coherent) of the bistatic directions to determine the degree of signature enhancement by using a minimum error criterion between the reference and extractable mode frequencies with onset shift. The assessments were qualitative and concluded that the third resonance with a left circular basis could outperform other resonants in discriminative potential. Henceforth, the bistatic configuration improves the strength of this most discriminative resonant mode to allow the maximum utilisation of the SEM signature in the identification operation of aircraft targets.
Robust stochastic optimal operation of an industrial building including plug in electric vehicle, solar‐powered compressed air energy storage and ice storage conditioner: A case study in the city of Kaveh, Iran
Authors: Doosti Reza , Sedighizadeh Mostafa , Sedighizadeh Davoud , Sheikhi Fini Alireza 
Published: March 2022

AbstractAn optimal day‐ahead operation of a microgrid (MG) based on an energy hub (EH) that is an industrial building, is presented in this paper. The proposed EH includes wind turbine (WT), photovoltaic (PV), triple generation that is combined cooling, heat and power, and salt water desalination. The purpose of solving problem is to lessen the operational and pollution costs limited to several technical restrictions. The EH takes into account plug in electric vehicle (PEV) and an ice storage conditioner (ISC) and together with a thermal energy storage system that is a supplementary energy storage system (ESS). Particularly, the performance and efficacy of the EH operational and pollution costs are studied by considering a solar‐‐powered compressed air energy storage (SPCAES) that is a novel rechargeable and developing ESS. The proposed model takes into account the uncertain behaviour of PV and WT generations together with the thermal, electrical, and cooling demands, which deal with a robust optimisation approach. The suggested robust mix integer linear problem model is figured out using the CPLEX solver in general algebraic modelling system software. The proposed framework is implemented on the industrial building located in the industrial city of Kaveh, Iran. The simulation results show that using ESSs including SPCAES, ISC, and PEVs reduce the total costs (operation and emission costs) by 2.42% in the day‐ahead energy management.
The Gaia-ESO Survey: The analysis of the hot-star spectra
Authors: Blomme R. , Daflon S. , Gebran M. , Herrero A. , Lobel A. , Mahy L. , Martins F. , Morel T. , Berlanas S. R. , Blazère A. , Frémat Y. , Gosset E. , Maíz Apellániz J. , Santos W. , Semaan T. , Simón-Díaz S. , Volpi D. , Holgado G. , Jiménez-Esteban F. , Nieva M. F. , Przybilla N. , Gilmore G. , Randich S. , Negueruela I. , Prusti T. , Vallenari A. , Alfaro E. J. , Bensby T. , Bragaglia A. , Flaccomio E. , Francois P. , Korn A. J. , Lanzafame A. , Pancino E. , Smiljanic R. , Bergemann M. , Carraro G. , Franciosini E. , Gonneau A. , Heiter U. , Hourihane A. , Jofré P. , Magrini L. , Morbidelli L. , Sacco G. G. , Worley C. C. , Zaggia S. 
Published: March 2022

Context. The Gaia-ESO Survey (GES) is a large public spectroscopic survey that has collected, over a period of six years, spectra of ~105 stars. This survey provides not only the reduced spectra, but also the stellar parameters and abundances resulting from the analysis of the spectra.
Aims. The GES dataflow is organised in 19 working groups. Working group 13 (WG13) is responsible for the spectral analysis of the hottest stars (O, B, and A type, with a formal cutoff of Teff > 7000 K) that were observed as part of GES. We present the procedures and techniques that have been applied to the reduced spectra in order to determine the stellar parameters and abundances of these stars.
Methods. The procedure used was similar to that of other working groups in GES. A number of groups (called Nodes) each independently analyse the spectra via state-of-the-art techniques and codes. Specific for the analysis in WG13 was the large temperature range covered (Teff ≈ 7000–50 000 K), requiring the use of different analysis codes. Most Nodes could therefore only handle part of the data. Quality checks were applied to the results of these Nodes by comparing them to benchmark stars, and by comparing them to one another. For each star the Node values were then homogenised into a single result: the recommended parameters and abundances.
Results. Eight Nodes each analysed part of the data. In total 17 693 spectra of 6462 stars were analysed, most of them in 37 open star clusters. The homogenisation led to stellar parameters for 5584 stars. Abundances were determined for a more limited number of stars. The elements studied are He, C, N, O, Ne, Mg, Al, Si, and Sc. Abundances for at least one of these elements were determined for 292 stars.
Conclusions. The hot-star data analysed here, as well as the GES data in general, will be of considerable use in future studies of stellar evolution and open clusters.
The bimodality in the mass–metallicity relation in SDSS-MaNGA galaxy pairs
Authors: Omori Kiyoaki Christopher , Takeuchi Tsutomu T. 
Published: March 2022

Aims. Interacting galaxies show a metallicity dilution compared to isolated galaxies of similar masses in the mass–metallicity space at the global scale. We investigate the spatially resolved mass–metallicity relation (MZR) of galaxy pairs in the SDSS-MaNGA survey to confirm that the local relation between the stellar mass surface density, Σ*, and the metallicity is consistent with the MZR at the global scale.
Methods. We investigate the relationship between the stellar mass surface density and the metallicity abundance, 12 + log(O/H), for star-forming spaxels belonging to 298 galaxy pairs identified using visual and kinematic indicators in the SDSS-MaNGA survey. We also investigate if (a) the location of a spaxel relative to the galaxy centre and (b) the galaxy pair separation have any effect on the local MZR.
Results. We find that the correlation between mass and metallicity holds for interacting galaxies at the local level. However, we find two peaks in spaxel distribution, one peak with enriched metallicity and the other with diluted metallicity. We find that the spaxels belonging to the galaxy central regions (i.e., at lower R/Reff) are concentrated close to the two peaks. We also find that the metallicity-diluted spaxels belong to galaxy pairs with closer projected separations and that spaxels with enriched metallicity belong to galaxy pairs with greater projected separations.
Conclusions. We find two discrete peaks in the spatially resolved MZR for star-forming spaxels that belong to galaxy pairs. The peaks are likely related to the galaxy projected separation or the stage of the interaction process of a galaxy pair.
HubbleAsteroid Hunter
Authors: Kruk Sandor , García Martín Pablo , Popescu Marcel , Merín Bruno , Mahlke Max , Carry Benoît , Thomson Ross , Karadağ Samet , Durán Javier , Racero Elena , Giordano Fabrizio , Baines Deborah , de Marchi Guido , Laureijs René 
Published: March 2022

Context.Large and publicly available astronomical archives open up new possibilities to search for and study Solar System objects. However, advanced techniques are required to deal with the large amounts of data. These unbiased surveys can be used to constrain the size distribution of minor bodies, which represents a piece of the puzzle for the formation models of the Solar System.Aims.We aim to identify asteroids in archival images from the ESAHubbleSpace Telescope (HST) Science data archive using data mining.Methods.We developed a citizen science project on the Zooniverse platform,HubbleAsteroid Hunter, and have asked members of the public to identify asteroid trails in archival HST images. We used the labels provided by the volunteers to train an automated deep learning model built with Google Cloud AutoML Vision to explore the entire HST archive to detect asteroids crossing the field-of-view.Results.We report the detection of 1701 new asteroid trails identified in archival HST data via our citizen science project and the subsequent machine learning exploration of the ESA HST science data archive. We detect asteroids to a magnitude of 24.5, which are statistically fainter than the populations of asteroids identified from ground-based surveys. The majority of asteroids are distributed near the ecliptic plane, as expected, where we find an approximate density of 80 asteroids per square degree. We matched 670 trails (39% of the trails found) with 454 known Solar System objects in the Minor Planet Center database; however, no matches were found for 1031 (61%) trails. The unidentified asteroids are faint, on average 1.6 magnitudes fainter than the asteroids we succeeded in identifying. They probably correspond to previously unknown objects.Conclusions.Citizen science and machine learning are very useful techniques for the systematic search for Solar System objects in existing astronomy science data archives. This work describes a method for finding new asteroids in astronomical archives that span decades; it could be effectively applied to other datasets, increasing the overall sample of well-characterised small bodies in the Solar System and refining their ephemerides.
Die Darm-Lungen-Achse
Authors: Rüffer Andreas 
Published: March 2022

SummaryLunge und Darm sind phylogenetisch sowie über das Schleimhaut-Immunnetzwerk miteinander verbunden. Daher wird auch von der Darm-Lungen-Achse gesprochen. In dieser Verbindung spielt offensichtlich die Darmmikrobiota eine wichtige Rolle, insbesondere beim Asthma und bei Infekten der Atemwege. Bei deren Behandlung ist daher unterstützend die diagnostische und therapeutische Berücksichtigung der Darmmikrobiota hilfreich.
Penile Ultrasound: An Essential Tool in an Emergency Setting (Traumatic and Non-Traumatic Diseases)
Authors: Bertelli Elena , D'Amico Giuseppe , Bertolotto Michele , Miele Vittorio 
Published: March 2022

AbstractPenile conditions requiring urgent care are uncommon and result from trauma and a variety of non-traumatic causes. Some cases could rapidly evolve into an emergency situation and require prompt treatment to prevent severe complications. Therefore, correct and rapid diagnosis is fundamental. Although clinical history and physical examination are essential, diagnostic imaging is usually required to confirm the clinical diagnosis. In this setting, the sonologist in the emergency department has to be familiar with the basic US penile anatomy and with the most common US findings in urgent penile care. US is the key imaging method because it is readily available, safe, cost-effective, and well-tolerated by the patient. US can differentiate intracavernosal from extracavernosal hematomas and detect rupture of the tunica albuginea, consistent with penile fracture, that requires early surgical exploration. Color Doppler evaluation and spectral analysis are necessary to depict vascular abnormalities.
Adenosin A2A Rezeptorantagonisten als Therapieoption beim
idiopathischen Parkinson-Syndrom?
Authors: Jost Wolfgang H. , Tönges Lars 
Published: March 2022

ZusammenfassungBeim Parkinson-Syndrom wurde sich lange Zeit auf die motorischen Symptome und die
Therapie mit dopaminergen Substanzen fokussiert. In den letzten Jahren gewannen
die nicht-motorischen Symptome immer mehr Bedeutung, da sie früh im
Krankheitsverlauf auftreten und die Lebensqualität erheblich
einschränken. Dadurch wurde aber auch die Notwendigkeit einer Behandlung
nicht nur des dopaminergen Defizits offensichtlich. Als weitere therapeutische
Option wurden die Adenosin A2A Rezeptorantagonisten entwickelt, da
Adenosin A2A Rezeptorantagonisten nicht-dopaminerg und selektiv in
den Basalganglien lokalisiert sind. Somit besteht die Möglichkeit
striato-thalamo-kortikalen Schleifen zusätzlich zu modulieren. Bereits
2013 wurde ein Adenosin A2A Rezeptorantagonist in Japan und in 2019
in den USA als Add-on zu L-DOPA zugelassen. Mit einer Zulassung in Europa wird
in naher Zukunft gerechnet. In dieser Übersicht möchten wir die
theoretischen Grundlagen dieses Therapieansatzes darstellen und die aktuellen
Daten zur Wirksamkeit und dem therapeutischen Einsatz referieren.
The performance and safety of motorized spiral enteroscopy, including in patients with surgically altered gastrointestinal anatomy: a multicenter prospective study
Authors: Al-Toma Abdulbaqi , Beaumont Hanneke , Koornstra Jan Jacob , van Boeckel Petra , Hergelink Dorien Oude , van der Kraan Jolein , Inderson Akin , de Ridder Rogier , Jacobs Maarten 
Published: March 2022

Background Data are scarce on the efficacy and safety of motorized spiral enteroscopy (MSE). No data are available on the utility of this technique in patients with surgically altered gastrointestinal (GI) anatomy. We aimed to evaluate the safety and efficacy of MSE in patients with suspected small-bowel disease, including those with surgically altered GI anatomy.
Methods A multicenter prospective observational, uncontrolled study evaluated MSE in consecutive patients with suspected small-bowel pathology and an indication for diagnostic and/or therapeutic intervention.
Results A total of 170 patients (102 men; median age 64 years, range 18–89) were included. The overall diagnostic yield was 64.1 %. Endotherapy was performed in 53.5 % of procedures. The median total procedure times for the antegrade and retrograde approaches were 45 minutes (interquartile range [IQR] 30–80) and 40 minutes (IQR 30–70), respectively. When total (pan)enteroscopy was intended, this was achieved at rate of 70.3 % (28.1 % by antegrade approach and 42.2 % by a bidirectional approach). Surgically altered GI anatomy was present in 34 /170 of all procedures (20.0 %) and in 11 /45 of the successful total enteroscopy procedures (24.4 %). Propofol sedation or general anesthesia were used in 92.9 % and 7.1 % of the procedures, respectively. Minor adverse events were observed in 15.9 % of patients, but there were no major adverse events.
Conclusion MSE seems to be an effective and safe endoscopic procedure. Total (pan)enteroscopy can be achieved, in one or two sessions, even in the presence of surgically altered GI anatomy. The total procedure time is relatively short. For both antegrade and retrograde MSE procedures, propofol sedation seems sufficient and safe.
Lumbosacral Interbody Fusion Using a Biportal Endoscopic Technique for Patients with Multilevel Severe Degenerative Lumbosacral Spondylosis: Technical Note and Case Presentations
Authors: Jung Seok Bong , Kim Nackhwan 
Published: March 2022

Abstract
Background Open decompression and posterior interbody fusion are standard surgical interventions for multilevel degenerative lumbosacral spondylosis (DLS). Despite their clinical efficacy, intraoperative and postoperative complications have led to the demand for a minimally invasive approach. A biportal endoscopic approach is an advanced minimally invasive surgical option.
Methods The data of two patients with multilevel DLS who had undergone biportal endoscopic spine surgery (BESS) were retrospectively analyzed. Parameters such as surgical difficulty, duration of operation, blood loss, length of hospital stay, and postoperative complications were reviewed. Pain and functionality were assessed using the visual analog scale (VAS) and the Oswestry Disability Index (ODI), respectively.
Results Both patients were women and aged 75 and 73 years; they complained of back pain, claudication, pain and weakness in the lower extremities, and gait disturbance. The symptoms lasted 5 and 8 years, respectively. The multilevel BESS approach was applied bilaterally. Dissection, laminofacetectomy, decompression, excision, cage insertion, and screw implantation were performed. The operation durations were 170 and 160 minutes with blood loss of 500 and 650 mL, respectively. Back pain, leg pain, and ODI scores significantly improved; no pseudoarthrosis or additional neurologic deficits were noted on follow-up.
Conclusions The presented BESS technique is a minimally invasive treatment option for patients with multilevel DLS, which typically requires a complicated surgical approach. Randomized controlled studies with larger sample sizes and longer follow-up periods are needed to verify the superiority of this operation.