bluuebunny/crossref_metadata_2025_split huggingface dataset:
Deep Search for Molecular Oxygen in TW Hya
Authors: Williams Becky J. , Cleeves L. Ilsedore , Eistrup Christian , Ramsey Jon P. 
Published: October 2023

Abstract
The dominant form of oxygen in cold molecular clouds is gas-phase carbon monoxide (CO) and ice-phase water (H2O). Yet, in planet-forming disks around young stars, gas-phase CO and H2O are less abundant relative to their interstellar medium values, and no other major oxygen-carrying molecules have been detected. Some astrochemical models predict that gas-phase molecular oxygen (O2) should be a major carrier of volatile oxygen in disks. We report a deep search for emission from the isotopologue 16O18O (N

J
= 21 − 01 line at 233.946 GHz) in the nearby protoplanetary disk around TW Hya. We used imaging techniques and matched filtering to search for weak emission but do not detect 16O18O. Based on our results, we calculate upper limits on the gas-phase O2 abundance in TW Hya of (6.4–70) × 10−7 relative to H, which is 2–3 orders of magnitude below solar oxygen abundance. We conclude that gas-phase O2 is not a major oxygen carrier in TW Hya. Two other potential oxygen-carrying molecules, SO and SO2, were covered in our observations, which we also do not detect. Additionally, we report a serendipitous detection of the C15N N

J
= 25/2 − 13/2 hyperfine transitions, F = 3 − 2 and F = 2 − 1, at 219.9 GHz, which we found via matched filtering and confirm through imaging.
Experimental Investigation of the Photochemical Production of Hydrocarbons in Warm Gas Giant Exoplanet Atmospheres
Authors: Fleury Benjamin , Benilan Yves , Venot Olivia , Henderson Bryana L. , Swain Mark , Gudipati Murthy S. 
Published: October 2023

Abstract
In warm (equilibrium temperature <1000 K) gas giant exoplanet atmospheres, the observation of trace species in abundances deviating from thermochemical equilibrium predictions could be used as an indicator of disequilibrium chemical processes, such as photochemistry. To predict which compounds could be used as such tracers, it is therefore essential to study how photochemical processes affect their abundances. For this purpose, we investigated experimentally the efficiency of the photochemical formation of hydrocarbons in gas mixtures representative of warm gas giant atmospheres as a function of the gas temperature at millibar pressures. We find that, compared to thermal reactions alone, photochemistry efficiently promotes, under the studied conditions, the formation of hydrocarbons, with the detection of acetylene, ethane, and propane, as well as carbon monoxide. Therefore, our results confirm the importance of photochemistry in exoplanet atmospheres as a disequilibrium process. Ethane is the major hydrocarbon formed in our experiments, in apparent contradiction with the prediction by thermo-photochemical models that acetylene should be the main hydrocarbon product. We also observe an evolution of the hydrocarbon production efficiency as a function of the temperature, a behavior not reproduced by a 0D thermo-photochemical model. Additional studies are necessary to definitively understand the origin of the differences between the experimental and modeling results and to infer the importance of our results for understanding hydrocarbon formation in warm gas giant exoplanet atmospheres. Finally, our work demonstrates the importance of experimental studies together with modeling studies to accurately interpret, understand, and predict observations of exoplanet atmospheres.
Radio Emission From a z = 10.1 Black Hole in UHZ1
Authors: Whalen Daniel J. , Latif Muhammad A. , Mezcua Mar 
Published: October 2023

Abstract
The recent discovery of a 4 × 107
M
⊙ black hole (BH) in UHZ1 at z = 10.3, just 450 Myr after the Big Bang, suggests that the seeds of the first quasars may have been direct-collapse BHs from the collapse of supermassive primordial stars at z ∼ 20. This object was identified in James Webb Space Telescope NIRcam and Chandra X-ray data, but recent studies suggest that radio emission from such a BH should also be visible to the Square Kilometer Array (SKA) and the next-generation Very Large Array (ngVLA). Here, we present estimates of radio flux densities for UHZ1 from 0.1 to 10 GHz, and find that SKA and ngVLA could detect it with integration times of 10–100 hr and just 1–10 hr, respectively. It may be possible to see this object with VLA now with longer integration times. The detection of radio emission from UHZ1 would be a first test of exciting new synergies between near-infrared and radio observatories that could open the era of z ∼ 5–15 quasar astronomy in the coming decade.
A 3D Numerical Study of Anisotropies in Supernova Remnants
Authors: Mandal Soham , Duffell Paul C. , Polin Abigail , Milisavljevic Dan 
Published: October 2023

Abstract
We develop a suite of 3D hydrodynamic models of supernova remnants (SNRs) expanding against the circumstellar medium (CSM). We study the Rayleigh–Taylor instability forming at the expansion interface by calculating an angular power spectrum for each of these models. The power spectra of young SNRs are seen to exhibit a dominant angular mode, which is a diagnostic of their ejecta density profile as found by previous studies. The steep scaling of power at smaller modes and the time evolution of the spectra are indicative of the absence of a turbulent cascade. Instead, as the time evolution of the spectra suggests, they may be governed by an angular mode-dependent net growth rate. We also study the impact of anisotropies in the ejecta and in the CSM on the power spectra of velocity and density. We confirm that perturbations in the density field (whether imposed on the ejecta or the CSM) do not influence the anisotropy of the remnant significantly unless they have a very large amplitude and form large-scale coherent structures. In any case, these clumps can only affect structures on large angular scales. The power spectrum on small angular scales is completely independent of the initial clumpiness and governed only by the growth and saturation of the Rayleigh–Taylor instability.
The Contribution and FIP Bias of Three Types of Materials inside ICMEs Associated with Different Flare Intensities
Authors: Fu Hui , Shi Xinzheng , Huang Zhenghua , Qi Youqian , Xia Lidong 
Published: October 2023

Abstract
The relationship between coronal mass ejections (CMEs) and flares is an important issue in solar and stellar physics. The studies on the origination and generation mechanisms of interplanetary CME (ICME) materials are crucial for understanding the connection between CMEs and flares. The materials inside ICMEs can be classified into three types, coming from corona directly (corona materials), heated by magnetic reconnection in corona (heated corona materials), and generated by chromospheric evaporation (chromospheric evaporation materials). Here the contribution and first ionization potential (FIP) bias of three types of materials inside ICMEs associated with different flare intensities are analyzed and compared. We find that the speeds and scales of near-Earth ICMEs both increase with flare intensities. The proportions of heated corona materials are nearly constant with flare intensities. The contributions of corona materials (chromospheric evaporation materials) are significantly decreased (increased) with flare intensities. More than two-thirds of materials are chromospheric evaporation materials for ICMEs associated with strong flares. The FIP bias of corona materials and heated corona materials is almost the same. The FIP bias of chromospheric evaporation materials is significantly higher than that of corona materials and heated corona materials, and it is increased with flare intensities. The above characteristics of FIP bias can be explained reasonably by the origination and generation mechanisms of three types of ICME materials. The present study demonstrates that the origination and generation mechanisms of ICME materials are significantly influenced by flare intensities. The reasons for the elevation of FIP bias, if ICMEs are regarded as a whole, are that the FIP bias of chromospheric evaporation materials is much higher, and the chromospheric evaporation materials contributed significantly to the ICMEs that are associated with strong flares.
New records of non-native Coleoptera in Italy
Authors: Ruzzier Enrico , Morin Lucio , Zugno Matteo , Tapparo Andrea , Bani Luciano , Di Giulio Andrea 
Published: October 2023

In the last decades, climate change and globalisation have been exacerbating the introduction of non-native beetles worldwide. Due toits peculiar territory, climate and geographical position in the middle of the Mediterranean Basin, Italy is one of the European countries with the highest number of intercepted, adventive and established non-native beetles, some of which are invasive. In this perspective, producing new faunistic records and continuously updating reliable and easily accessible distributional data is a fundamental step in investigating and potentially preventing further species introduction.
The aim of this contribution is to report and discuss new faunistic records of non-native Coleoptera in Italy. For some species, new records enlarge the previously-known distribution (e.g. the ambrosia beetles Anisandrus maiche (Kurentzov, 1941) and Cnestus mutilatus (Blandford, 1894) or the click beetle Monocrepidius posticus (Eschscholtz, 1829)), while for others (e.g. the scarab beetle Archophileurus spinosus Dechambre, 2006), data confirm their establishment and highlight a possible expansion phase. The false powderpost beetles Ptilineurus marmoratus (Reitter, 1877) and the longhorn beetle Xylotrechus chinensis (Chevrolat, 1852) are two new additions to the Italian fauna, while the establishment of the monotomid beetle Monotoma americana Aubé 1837 is confirmed.
Les personnes déplacées internes au Mali face à la COVID-19 : une étude qualitative
Authors: AG Ahmed Mohamed Ali , Ly Birama Apho , Diarra Djeneba , Traore Fatoumata Bintou , Diarra Niélé Hawa , Toure Mohamed , Dembele Mahamadou , van de Put Willem , Gagnon Marie-Pierre , Doumbia Seydou 
Published: October 2023

Introduction : Le Mali fait face depuis 2012 à une crise sécuritaire qui a entraîné des déplacements massifs des populations à laquelle s’est greffée la pandémie de la COVID-19. But de l’étude : Cette étude vise à explorer les représentations des personnes « déplacées internes » (PDIs), c’est-à-dire des personnes forcées de fuir leur lieu d’origine, sur l’existence de la COVID-19 ainsi que leurs connaissances sur ses signes, ses symptômes, les modes de transmission et les mesures de prévention. Méthodes : L’étude est qualitative et exploratoire. Des entretiens individuels et en groupes ont permis de collecter les données auprès de 52 PDIs de six sites de Bamako et Ségou. Tous les entretiens ont été enregistrés et transcrits. L’analyse de contenu thématique et le logiciel NVivo ont été utilisés. Résultats : Dans leur majorité, les PDIs croyaient en l’existence de la COVID-19 et avaient de bonnes connaissances sur les signes, les symptômes, les modes de transmission et les mesures de prévention contre la maladie. Toutefois, cela n’a pas été suffisant pour l’adoption des mesures de santé publique. Parmi ceux qui croient en son existence, certains pensent que c’est toutefois une maladie des blancs et des riches. Enfin, un groupe de participants croyait plutôt en des théories du complot selon lesquelles le gouvernement et les organisations humanitaires ne chercheraient qu’à gagner de l’argent à travers ces campagnes. Conclusions : Il s’agit à notre connaissance de la première étude au Mali explorant les représentations et les connaissances des PDIs sur la COVID-19. Ces résultats pourraient éclairer les politiques, stratégies et interventions de lutte contre la COVID-19 dans les sites PDI et dans la population générale.
A Deal with God : analyse d’une hybridation gestuelle et musicale entre féminin et masculin
Authors: Boschiero Pauline 
Published: October 2023

Cet article propose d’analyser le clip-vidéo « Running up that Hill », de l’album de Kate Bush, Hounds of Love, sorti en 1985. L’actualité pop de l’été 2022 a été marquée par ce que certains ont qualifié de « grand retour » de Kate Bush. Elle n’était, en réalité, jamais partie, comme le savent celles et ceux qui s’intéressent à elle et à son œuvre depuis le début. Quoi qu’il en soit, en figurant dans la bande originale de la quatrième saison de la série phénomène Stranger Things, le titre « Running up that Hill » a étendu et renouvelé son succès, notamment auprès de la jeune génération. Et c’est peut-être maintenant plus que jamais qu’une analyse esthétique et politique de ce morceau et de son vidéo-clip s’avère nécessaire. Le clip original de « Running up that Hill » a été mis en ligne sur YouTube le 15 janvier 2011 ; il aura fallu près de onze ans pour qu’il atteigne plus de cent millions de visionnages. L’extrait de la série, où le titre de Kate Bush joue un rôle déterminant, a été mis en ligne le 30 mai 2022 et cumule aujourd’hui plus de dix-huit millions de visionnages. Sans entrer dans une logique réactionnaire, nous essaierons de montrer dans cet article en quoi le vidéo-clip de 1985 est toujours d’actualité, notamment dans les champs d’études qui sont les nôtres, à savoir la danse et les études féministes et queer. L’analyse esthétique et politique de ce titre musical et de son clip-vidéo, dont le caractère romantique – au sens de la romance hétérosexuelle telle que l’inconscient collectif se la représente – a rarement été dépassé par la critique, nous permettra de voir dans quelle mesure Kate Bush invite à penser le concept d’écriture féminine développé par Hélène Cixous, sans tomber dans une féminité essentialiste.
Ultimate Strength Reliability Analysis Applied to the Design of Cement Sheaths in Oil Wells
Authors: Estrela Gabriela Alves , de Sousa Fernando Jorge Mendes , Lopes Guilherme Kronemberger , Gonzaga e Silva Ana Beatriz de Carvalho , de Andrade Henrique Conde Carvalho , Rocha José Marcelo Silva , Moreira Rafael Peralta Muniz , da Silva Ingrid Ezechiello 
Published: October 2023

Abstract
In offshore wells, cement sheaths are responsible for isolating the casing from the formation, protecting the latter from corrosion, and preventing fluid migrations that can cause severe blowouts in extreme situations.
The most usual methodology applied in the structural evaluation of cement sheaths is deterministic, where characteristic values are employed to model material properties and loads. At the end of the analysis, stresses (or any other derived parameter) are compared to allowable limits. Although this design methodology is relatively simple, it doesn't consider uncertainties regarding material properties and loading conditions. Moreover, no information is provided concerning how far the structure is from failure. These issues can only be addressed using a statistical approach.
In this way, this work aims to propose a reliability-based methodology to be applied to the design of cement sheaths. Using the FORM method and a structural analysis computer program (TENCIM-1D – Toledo Filho et al. 2020), failure probabilities can be easily accessed with low computational costs. These values can then be compared to target failure probabilities specified in offshore standards. In addition, the FORM method can also improve the design quality, as one of its subproducts – the derived importance factors – may help to identify the properties and parameters that most contribute to the obtained failure probabilities. Therefore, these properties and parameters are the ones that need to be better described statistically, either through experiments to survey physical properties or through field measurements.
The obtained results indicate the feasibility of the proposed methodology and the need to develop studies to determine the probability distributions, mean values and standard deviations of some physical properties and loads.
A Lean Electric Actuation System to Scale Up Carbon Storage Subsea
Authors: Kubacki M. , Orth A. , Hendrix G. , Silva J. P. Duarte da 
Published: October 2023

Abstract
Carbon Capture Utilization and Storage (CCUS) facilities are crucial to mitigate the global emissions in the next years in industrial scale. In the first CCUS pilot projects, the CO2 injection wells were developed using traditional hydraulic systems, resulting in overly complex systems with considerable CAPEX and OPEX as well as environmental risks. Available all-electric subsea control systems, designed for the oil and gas industry, are not suitable for upscaling the CCUS due to much higher CAPEX investment.
During the development of a new series of all-electric Subsea Valve Actuators (OTC- 28828-MS (ORTH and HENDRIX 2018), OTC-31083-MS (ORTH, HENDRIX, et al. 2021), OTC-32129-MS (ORTH, PLACIDO NETTO and HENDRIX 2022) & OTC-32346-MS (ORTH, HENDRIX, et al. 2023)) using the hydrostatic drive principle, the actuation technology was optimized to handle high loads while minimizing the power consumption during operation. Without the need for electric energy storage, these actuators provide a highly responsive safety function with SIL 3 based on field-proven springs. With a standardized design integrating industrial and automotive components, a lean production system is applied to ensure high quality and efficiency. The new SVA R2 is qualified to operate quarter-turn valves up to 270 Nm with less than 48 W and to hold position with a stand-by power less than 15 W.
This drive technology is now used in the development of a new generation of Subsea Electric Actuators for larger rotative and linear valves, all using the low power demand. Simulations indicate that an entire subsea tree could be operated with less than 385 W without applying an expensive subsea battery.
One of the biggest challenges for newborn energy transition sectors, such as CCUS, is that the industry would like to take the advantages of all-electric subsea control systems, but the associated costs is forcing them to apply conventional offshore hydraulic systems with their associated complexity and low productivity.
This paper shows how such a lean electric actuation system could dramatically simplify the subsea control architecture, reducing so the costs of the overall electric infrastructure needed for a safe and efficient Carbon Storage Subsea.
Creating Sustainable Value: An ESG Framework for the Petroleum Industry
Authors: Bandeira G. L. , Trindade D. N. , Sodario M. , Ferronatto G. 
Published: October 2023

Abstract
Efforts have been made on a global scale to reduce companies' impacts on the planet, people, and communities, prompting industries to reconsider their approaches to production and workforce management. However, several challenges and barriers impede businesses from fully embracing sustainable actions. One such obstacle is the creation of robust ESG planning. To address this issue, this research aims to develop a sustainability roadmap based on Environmental, Social, and Governance (ESG) strategies for a Norwegian Petroleum company. The programs are categorized into three pillars aligned with the triple bottom line and the Sustainable Development Goals (SDGs). To achieve this, a Steering Committee sponsors and oversees ten key workstreams (WS) derived from this strategy's construction.
The Environmental dimension encompasses the Energy Management & CO2 Emissions initiative, demonstrating the company's dedication to tackling climate change by curbing CO2 emissions and minimizing environmental impacts from its operations. Additionally, in the Waste Management program, the company strives to reduce waste generation and promote a circular economy approach. Moreover, the company actively contributes to the global decarbonization of Oil and Gas (O&G) production through the Low Carbon Solutions program.
As for the Social dimension, the Health & Safety program centers on creating a world-class performance organization, enhancing business competitiveness, and achieving a zero-incident vision. In the Talent Attraction & Retention program, people are acknowledged as the key to the company's success. The Diversity & Equality program showcases the company's commitment to non-discriminatory practices and equal opportunities. Through the Social Responsibility program, the company positively impacts local communities through educational initiatives.
Finally, in the Governance dimension, the Responsible Business Conduct program promotes zero tolerance for corruption. The Compliance Obligation for HSE program ensures strict adherence to HSE laws and regulations. In the Responsible Supply Chain program, suppliers are selected based on their adherence to high environmental, anti-corruption, and human rights standards. The study results inform recommendations to effectively accommodate an ESG strategy and roadmap, fostering optimal cohesion within the petroleum industry and integrating their strengths to positively impact the entire value chain and optimize the realization of organizational goals.
Free-Hanging Rigid Riser: Innovation X Market Solutions
Authors: Amorim Andre Ramiro , Tanscheit Peter , Bandeira Victor , Gomes Rodrigo Klim , Asgari Peyman 
Published: October 2023

Abstract
The exploration of oil and gas in ultra-deep waters is characterised by a series of technical challenges that have been gradually overcome with innovations applied to risers. When it comes to free-hanging rigid risers, the most common solution is the Steel Lazy Wave Riser (SLWR), which relies on installing buoyancy modules along an additional section of linepipe. Among the main challenges of the SLWR system are the additional cost and time for installation of the buoyancy modules, besides the risks related to installation and the need for additional riser length to accommodate the buoys. Alternative solutions have been conceived, such as the Gimbal Joint Riser (GJR), an articulated joint in-line with the riser that reduces the dynamic effect at the Touch Down Zone (TDZ), or the Residual Curvature Riser (RCR), which consists of deformed rigid riser sections that dissipates the energy transmitted from the hang-off to the Touch Down Point (TDP). All solutions have their own sweet spot depending on the harsh environmental conditions and on the floating unit type. This article aims to present the concept of the three solutions, comparing them in terms of cost and technical feasibility assuming a reference case. The three mentioned technologies address the problem of energy dissipation from the hang-off to the TDP in different ways, being independent solutions that use different resources and work based on distinct concepts. Assuming that installation time and total cost are two of the most relevant aspects of free-hanging rigid riser systems, these were the main criteria used for a comparison between the solutions, in addition to a line tension criterion, especially at the hang-off. The SLWR solution is established, and several results were published in literature. Such results are used as a reference for the present work. RCR is currently at Technology Readiness Level 2 (API/TRL-2), according to the API scale, with estimates based on numerical models and analytical calculations. The GJR is a solution at Technology Readiness Level 2 (API/TRL-3) and is currently undergoing the conclusion of technological qualification process. Therefore, for evaluation of GJR, calibrated numerical models are used according to the experimental tests already carried out in the qualification program. Results indicate that RCR and GJR present better performance in comparison with SLWR for operational and extreme cases with lower costs. SLWR is slightly better than competing technologies in terms of fatigue life, although, fatigue results of GJR and RCR also comply with operational requirement.