bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigating the relationships of free will belief, presence of meaning in life, and self-consciousness with authenticity: a mixed-methods study
Authors: Bayram Yunus , Artan Taner
Published: April 2024

Authenticity refers to personality and situational characteristics that enhance the psychological well-being of individuals. Authenticity develops under the influence of various factors. Drawing on the Theory of Existential Psychotherapy (EPT) framework, the present study aimed to investigate the extent to which free will belief, self-consciousness, and presence of meaning in life predict authenticity. The researchers used a mixed-method design to examine the relationship between these predictors and authenticity. The sample consisted of 505 participants, with 455 in the quantitative design and 50 in the qualitative design. The quantitative analyses revealed a positive association between presence of meaning in life and self-consciousness with authenticity. The findings suggest that self-consciousness mediates the relationship between presence of meaning in life and authenticity, and between free will belief and authenticity, with a full mediating effect for free will belief and a partial mediating effect for presence of meaning in life. The qualitative analyses elucidated the relationships between free will belief-authenticity, life meaning-authenticity, self-consciousness-authenticity, and free will belief-presence of meaning in life-self-consciousness-authenticity. Overall, the findings indicate that the factors investigated, in line with the theoretical framework proposed in EPT, can enhance authenticity.
The Underestimated Impact of Hashimoto Thyroiditis on Thyroid Papillary Carcinoma
Authors: Harmantepe Ahmet Tarik , Ozdemir Kayhan , Bayhan Zulfu , Kocer Belma
Published: April 2024

It is stated that Hashimoto’s Thyroiditis (HT) is a risk factor for the development of Papillary Thyroid Cancer (PTC). However, the effect of HT on the coexistence of HT and PTC is still controversial. In this study, our aim is to investigate the effect of the presence of HT on clinicopathological data in patients with PTC. All 356 patients whose pathology was reported as PTC who were operated between 2015 and 2023 were included in the study. PTC patients were divided into 2 groups as those with and without HT. The effect of HT association on clinicopathological features was investigated. In 356 PTC patients, the rate of HT was 31.2%. PTC patients with HT had less multifocality (p < 0.05), more lymph node metastases (LNM) (p < 0.01) compared to PTC patients without HT. The presence of HT did not affect the bilaterality of the tumor, tumor diameter, lymphovascular invasion, or capsule invasion. While multifocality was observed less frequently in PTC patients with HT, lymph node metastasis rates were higher.
Ways of Remembering
Authors: Sircar Oishik
Published: April 2024

Ways of Remembering tells a story about the relationship between secular law and religious violence by studying the memorialisation of the 2002 Gujarat pogrom—postcolonial India's most litigated and mediatized event of anti-Muslim mass violence. By reading judgments and films on the pogrom through a novel interpretive framework, the book argues that the shared narrative of law and cinema engenders ways of remembering the pogrom in which the rationality of secular law offers a resolution to the irrationality of religious violence. In the public's collective memory, the force of this rationality simultaneously condemns and normalises violence against Muslims while exonerating secular law from its role in enabling the pogrom, thus keeping the violent (legal) order against India's Muslim citizens intact. The book contends that in foregrounding law's aesthetic dimensions we see the discursive ways in which secular law organizes violence and presents itself as the panacea for that very violence.
Performing Sovereign Aspirations
Authors: Klem Bart
Published: April 2024

In a society that experiences secessionist conflict, many things are not what they seem. This book adopts a performative perspective to understand the peculiar institutional landscape the ensued around the Tamil separatist conflict in Sri Lanka, both during and after the civil war. It draws on two decades of fieldwork across towns and villages in northern and eastern Sri Lanka, ethnography within Sri Lanka's civil service, and privileged access to Norwegian-facilitated peace process. This yields a compelling analytical narrative that shows how political institutions are enacted and witnessed, rather than cataloguing them in the strictures of the law. This provides a fertile vantage point to address the to-be-or-not-to-be dilemmas that we face when seeking to interpret the legitimacy, legality, and validity of the institutions that separatist movements create in aspiration of sovereign status. And as such, this book provides food for thought for broader conceptual debates concerning armed conflict and insurgency. This title is available Open Access.
Vulnerable Earth
Authors: Nayar Pramod K.
Published: April 2024

Vulnerable Earth is a study of the literature of climate crisis. Building on the assumption that the crisis is planetary in scope even if differential and unequal in effects, it examines literary fiction, graphic novels, memoirs about toxic wastes and neo-slavery narratives, mostly from the contemporary decades, but touching upon select antecedents as well, and from all over the world. The study covers texts that fictionalize a 'hydrocrisis', those that are concerned with species extinction and experimental solutions such as rewilding, fiction and memoirs that are interested in exploring the conversations between and across species in multispecies encounters and, finally, texts that show the linkage between social justice and environmental justice.
Focusing on aesthetics, narrative modes and constructions of damaged, wasted and at-risk worlds, this book shows how the literature of climate crisis foregrounds a feature that humans and nonhumans, the living and the non-living share, differentially, with the planet: vulnerability.
The Violence of Law
Authors: Meierhenrich Jens
Published: April 2024

'Lawfare' describes the systematic use and abuse of legal procedure for political ends. This provocative book examines this insufficiently understood form of warfare in post-genocide Rwanda, where it contributed to the making of dictatorship. Jens Meierhenrich provides a redescription of Rwanda's daring experiment in transitional justice known as inkiko gacaca. By dissecting the temporally and structurally embedded mechanisms and processes by which change agents in post-genocide Rwanda manoeuvred to create modified legal arrangements of things past, Meierhenrich reveals an unexpected jurisprudence of violence. Combining nomothetic and ideographic reasoning, he shows that the deformation of the gacaca courts – and thus the rise of lawfare in post-genocide Rwanda – was not preordained but the outcome of a violently structured contingency. The Violence of Law tells a disturbing tale and will appeal to scholars, advanced students, and practitioners of international and comparative law, African studies and human rights.
Anxious Scrutiny in Hong Kong Administrative Law: Origins, Adaptations, and Techniques
Authors: Ramsden Michael
Published: April 2024

‘Anxious scrutiny’ has become one of the most used terms within the lexicon of judicial review throughout the common law world, including Hong Kong, yet surprisingly remains understudied in the scholarly literature. In contrast to the considerable body of literature on substantive review of discretion in relation to proportionality and Wednesbury unreasonableness as rival standards of review, there is still much to explore in relation to the foundation, purpose, and techniques of anxious scrutiny review, including how the concept may have come to depart from its English roots in other common law jurisdictions. Using Hong Kong as a case study, this article examines how anxious scrutiny has been received in an Asian common law jurisdiction, considering both the scope of application and the techniques used by judges under this standard. Through a detailed examination of the case law, it traces the origins and evolution of the standard and its future role within the sliding scale of substantive review within Hong Kong's system of public law.
A review and reassessment of the aerodynamics of cricket ball swing
Authors: Grimshaw Sam D. , Briggs Aaron , Atkins Nick R.
Published: April 2024

This paper reviews 70 years of cricket ball swing literature and reassesses the results in light of new measurements. A comparison of ball tracking data with published experimental results shows that current understanding does not explain the behaviour observed in professional cricket matches. Descriptions of cricket ball boundary layer aerodynamics are updated with new results which show that the seam acts more like a series of vortex generators than a trip and that there is a laminar separation bubble on the seam side of the ball. Previous results for reverse swing are consolidated and compared with new data, showing that different magnitudes of swing occur depending on the condition of both sides of the ball. Variation in pressure and temperature should be included when the Reynolds number, a non-dimensional ball speed, is calculated, while humidity can be neglected. Studies on the effect of wind speed and direction are summarised and results considering the effect of free-stream turbulence are compared with new measurements. Throughout the paper, recommendations for future work are suggested. These include quantitative study of the effect of surface defects and roughness, an assessment of whether atmospheric turbulence can affect swing and investigation into the effect of backspin on swing.
Feasibility, acceptability and preliminary effectiveness of a community-based group psychosocial support model for conflict survivors in Colombia: An assessment of in-person and remote intervention modalities during the COVID-19 pandemic
Authors: James Leah E. , García Mejía Nicolás , Botero-García Juan F. , Rattner Michel
Published: April 2024

Background

Community-based psychosocial support (CB-PSS) interventions utilizing task sharing and varied (in-person, remote) modalities are essential strategies to meet mental health needs, including during the COVID-19 pandemic. However, knowledge gaps remain regarding feasibility and effectiveness.

Methods

This study assesses feasibility, acceptability and preliminary effectiveness of a CB-PSS intervention for conflict-affected adults in Colombia through parallel randomized controlled trials, one delivered in-person (n = 165) and the other remotely (n = 103), implemented during the COVID-19 pandemic and national protests. Interventions were facilitated by nonspecialist community members and consisted of eight problem-solving and expressive group sessions.

Findings

Attendance was moderate and fidelity was high in both modalities. Participants in both modalities reported high levels of satisfaction, with in-person participants reporting increased comfort expressing emotions and more positive experiences with research protocols. Symptoms of depression, anxiety and posttraumatic stress disorder improved among in-person participants, but there were no significant changes for remote participants in comparison to waitlist controls.

Implications

This CB-PSS intervention appears feasible and acceptable in both in-person and remote modalities and associated with reduction in some forms of distress when conducted in-person but not when conducted remotely. Methodological limitations and potential explanations and areas for future research are discussed, drawing from related studies.
Understanding mental health stigma and discrimination in Ethiopia: A qualitative study
Authors: Girma Eshetu , Ayele Bethel , Gronholm Petra C. , Wahid Syed Shabab , Hailemariam Ariam , Thornicroft Graham , Hanlon Charlotte , Kohrt Brandon
Published: April 2024

Background

Stigma is significantly impacted by cultural and contextual value systems. People with mental health conditions frequently have to deal with the condition itself and the associated stigma and discrimination. Contextual understanding is essential to design measures and interventions.

Objective

This study aimed to explore the experiences and perceptions of people with mental health conditions, their families and key stakeholders.

Method

A qualitative method used to understand mental health-related stigma and its local contexts. Sixteen participants, including service users, caregivers, service providers and health service administrators, were interviewed.

Result

People with mental health conditions and their caregivers experienced various forms of stigmatization which is linked to attributions about the causality of the illness, overt manifestations of mental health condition leading to easy identification and functional impairments that adversely affect participation. Social contact, lived experiences sharing and training of service providers are relevant intervention strategy to address stigma.

Implication

Stigma and exclusion are prominent in the experiences of people with mental health conditions and their caregivers in this rural Ethiopian setting. Measurement of stigma and the development of interventions should consider how stigma is socially constructed. Anti-stigma interventions need to be implemented alongside expanded local access to mental healthcare.
Feminist Philosophical Toys: Playful Companions and Live Theorization
Authors: Parvin Nassim , Rouse Rebecca
Published: April 2024

What are the matters of philosophy? How do they shape how philosophy is practiced, what kinds of knowledge it produces, and who counts as a philosopher? The dominant matters of Western philosophy, or its epistemic companions, are books and journal articles even when dialogic and oral traditions are acknowledged or referenced. In this paper, we argue that alternatives would be necessary if philosophy were to be a more capacious and welcoming discipline. We introduce Feminist Philosophical Toys as one such alternative that challenges what counts as serious philosophy by being seriously playful. The toys foreground the oral and the dialogic while reflecting on and committing to engaging materiality, record-keeping, and record-making. In doing so, the toys challenge the dominant form of philosophy and its mechanics of knowledge-making as they offer an alternative way of doing philosophy that can be transformative for the next generation of feminist scholarship. The dialogic, embodied, and communal interaction with paper, with theory, and with others is meant as a practice of live theorization, opening philosophy to a new groundedness and accessibility, centered in the ethos of feminist epistemology, while at the same time pushing against fetishization of matter.
The Emergence of the Yuan Non-Han Ancestry in Late Qing North China
Authors: Iiyama Tomoyasu
Published: April 2024

This study sheds light on the largely unknown trajectories of the emergence of Yuan non-Han ancestry in late Qing North China. Focusing on the case of a Yuan Mongol minister's enshrinement, the article argues that the commemoration of non-Han ancestries seems to have been aroused by the two-century-long imperial project of compiling the Gazetteers of the Great Qing Empire, over the course of which the state reiterated extensive surveys of local worthies, chaste women, and martyred loyal subjects, including those from previous dynasties. Importantly, the surveys coincided with the rise of epigraphic studies that featured exhaustive epigraphic fieldwork, which gave rise to the reinterpretation and replication of Yuan epigraphy, rendering Yuan steles one of the most adamant testimonies of ancestral claims. The ancestries classified during the Qing came to coexist with modern ethnic identities classified by the Ethnic Classification Project during the mid-twentieth century.
A new density filter for pipes for fluid topology optimization
Authors: Choi Young Hun , Yoon Gil Ho
Published: April 2024

This study presents a new density filter for a pipe-shaped structure and its application to fluid topology optimization. A simple and straight pipe-shaped structure for fluid is preferred for many engineering purposes rather than the perplex manifold structure provided by the topology optimization method. To determine an optimal pipe structure for fluid, we develop a new density filter and apply it to fluid topology optimization. Hence, the original spatially varying design variables of the fluid topology optimization are modified based on the pipe density filter. Subsequently, the filter design variables, including a uniform pipe wall thickness and adjusted cross-section, are used for artificial pseudo-rigid bodies in fluid topology optimization. An additional constraint is imposed to maintain a nearly uniform pipe thickness. Several numerical examples are solved to demonstrate the validity of the present pipe density filter for fluid topology optimization problems minimizing the energy dissipation of the fluid and controlling the particles suspended in the fluid.
Boussinesq-type equations of hydroelastic waves in shallow water
Authors: Tang Shanran , Xiong Yingfen , Zhu Liangsheng
Published: April 2024

Accurate computation of hydroelastic waves in shallow water is critical because many hydroelastic wave applications are nearshores, such as sea-ice and floating infrastructures. In this paper, Boussinesq assumptions for shallow water are employed to derive nonlinear Boussinesq-type equations of hydroelastic waves, in which non-uniform distribution of structural stiffness and varying water depth are considered rigorously. Application of Boussinesq assumptions enables complicated three-dimensional problems to be reduced and formulated on the two-dimensional horizontal plane, therefore the proposed Boussinesq-type models are straightforward and versatile for a wide range of hydroelastic wave applications. Two configurations, a floating plate and a submerged plate, are studied. The first-order linear governing equations are solved analytically with periodic conditions assuming constant depth and uniform stiffness, and the linear dispersion relations are subsequently derived for both configurations. For flexural-gravity waves of a floating plate, unique behaviours of flexural-gravity waves different from shallow-water waves are discussed, and a generalized solitary wave solution is investigated. A nonlinear numerical solver is developed, and nonlinear flexural-gravity waves are found to have smaller wavelength and celerity than their linear counterparts. For hydroelastic waves of a submerged plate, dual-mode analytical solutions are discovered for the first time. Numerical computation has demonstrated that a plate with decreasing submerged depth is able to transfer wave energy from the deeper water to the surface layer.
Large-scale patterns set the predictability limit of extreme events in Kolmogorov flow
Authors: Vela-Martín Alberto , Avila Marc
Published: April 2024

Events of extreme intensity in turbulent flows from atmospheric to industrial scales have a strong social and economic impact, and hence there is a need to develop models and indicators which enable their early prediction. Part of the difficulty here stems from the intrinsic sensitivity to initial conditions of turbulent flows. Despite recent progress in understanding and predicting extreme events, the question of how far in advance they can be ideally predicted (without model error and subject only to uncertainty in the initial conditions) remains open. Here we study the predictability limit of extreme dissipation bursts in the two-dimensional Kolmogorov flow by applying information-theoretic measures to massive statistical ensembles with more than

$10^7$

direct numerical simulations. We find that extreme events with similar intensity and structure can exhibit disparate predictability due to different causal origins. Specifically, we show that highly predictable extreme events evolve from distinct large-scale circulation patterns. We thus suggest that understanding all the possible routes to the formation of extreme events is necessary to assess their predictability.
Statistical properties of neutrally and stably stratified boundary layers in response to an abrupt change in surface roughness
Authors: Ding Shan-Shan , Carpentieri Matteo , Robins Alan , Placidi Marco
Published: April 2024

We conducted experimental investigations on the effect of stable thermal conditions on rough-wall boundary layers, with a specific focus on their response to abrupt increases in surface roughness. For stably stratified boundary layers, a new analytical relation between the skin-friction coefficient,

$C_f$

, and the displacement thickness was proposed. Following the sharp roughness change, the overshoot in

$C_f$

is slightly enhanced in stably stratified layers when compared with that of neutral boundary layers. Regarding the velocity defect law, we found that the displacement thickness multiplied by

$\sqrt{2/C_f}$

, performs better than the boundary layer thickness alone when describing the similarity within internal boundary layers for both neutral and stable cases. A non-adjusted region located just beneath the upper edge of the internal boundary layer was observed, with large magnitudes of skewness and kurtosis of streamwise and wall-normal velocity fluctuations for both neutral and stable cases. At a fixed wall-normal location, the greater the thermal stratification, the greater the magnitudes of skewness and kurtosis. Quadrant analysis revealed that the non-adjusted region is characterised by an enhancement/reduction of ejection/sweep events, particularly for stably stratified boundary layers. Spatially, these ejections correspond well with peaks of kurtosis, exhibit stronger intensity and occur more frequently following the abrupt change in surface conditions.
Effect of using hydroxychloride as a copper source on performance, eggshell quality, tibia properties, mineral excretion, and antioxidant capacity of yolk in layer quails
Authors: Gül Esra Tuğçe , Olgun Osman , Kılınç Gözde , Gökmen Fatih , Yıldız Alpönder , Uygur Veli , Sevim Behlül , Sarmiento-García Ainhoa
Published: April 2024

This research aimed to examine the impact of varying levels of dietary copper (Cu) hydroxychloride on the performance, egg quality, yolk antioxidant capacity, tibia traits, and mineral excretion in laying quails. 125 female 10-week-old quails were randomly distributed into five experimental groups with five replicates, each consisting of five quails. Five experimental isonitrogenous and isoenergetic diets were designed to contain different Cu hydroxychloride (54% Cu) levels at 7.20 (basal diet), 15, 30, 45 and 60 mg/kg respectively. Quails were fed with trial diets for 12 weeks. Performance, egg production, eggshell quality, and biomechanical traits of the tibia were not impacted (P > 0.005) by variations in dietary Cu levels. Yolk antioxidant capacity, measured as yolk DPPH value, exhibited an increase (P < 0.01) in the high-dose group (60 mg/kg). Regarding tibia mineral concentration, Cu concentration decreased linearly (P < 0.001) with increasing Cu level, manganese and zinc content recorded the highest values in quails that had received 60 mg/kg Cu in the diet (P < 0.01), while the lowest phosphorus content was described for 45 and 60 mg/kg. Contrarily, increases (P < 0.01) in dietary Cu resulted in raised faecal Cu content, while phosphorus, manganese, and zinc, were reduced when Cu was added. It can be inferred that adding Cu to the diet of laying quails would not be necessary, which in turn decreases Cu excretion and prevents substantial environmental harm.
Role of absolute versus relative voice rest in post-operative management of benign vocal fold lesions
Authors: Sinha Mihika , Pillai Suresh , Shetty Shama , Devadas Usha
Published: April 2024

Objective

Most otolaryngologists advocate absolute voice rest after laryngeal surgery, which proves difficult for patients, so we decided to evaluate the role of absolute voice rest versus relative voice rest in the post-operative management of benign lesions.

Methods

Forty patients were recruited and divided in two groups: absolute voice rest and relative voice rest. Pre- and post-operative voice analysis (fundamental frequency, jitter, shimmer, voice handicap index, voice-related quality-of-life scale scores and compliance) were noted at one week and one month.

Results

Voice analysis parameters including jitter (p = 0.035), shimmer (p = 0.020), voice handicap index (p < 0.001) and compliance (p < 0.001) were better in the relative voice-rest group. Frequency, number of voice breaks and voice-related quality of life showed no statistically significant results.

Conclusion

There was no significant benefit of absolute voice rest on post-operative outcomes as determined by acoustic variables. Compliance and quality-of-life scores were low in the strict voice-rest group. Therefore, we should reconsider post-surgical voice-rest protocol.
Birth Strikes, Climate Responsibility, and Hannah Arendt
Authors: Brown Mark B.
Published: April 2024

Many people today are concerned about the implications of climate change for their personal reproductive decisions. Some have transformed such concerns into activism by engaging in a “birth strike” and publicly announcing their decision not to procreate because of climate change. This article draws on Hannah Arendt to examine the political meaning and significance of birth strikes. It makes three basic points. First, by highlighting the human condition of being born, what Arendt called natality, birth strikes have illuminated a distinctive set of threats and possibilities for climate politics. Second, due to modern consumerism and instrumentalism, which Arendt saw as the dominance of labor and work over action, birth strikes have been misperceived as advocating a reduction in personal carbon footprints and global population growth. Third, birth strikes have clarified some of the challenges for efforts to link the individual and collective dimensions of climate responsibility.
„Wie soll mir denn eine Therapie helfen, wenn ich schon daran scheitere, sie mir zu organisieren?“
Authors: Pantle Vanessa , Maier Lena , Schmalbach Ileana , Engesser Deborah , Lieb Klaus , Wiegand Hauke Felix , Singer Susanne
Published: April 2024

Zusammenfassung: Theoretischer Hintergrund: Ein Ziel der Psychotherapiestrukturreform war unter anderem den Zugang zu ambulanter Psychotherapie zu erleichtern. Die vorliegende Studie evaluiert dabei, inwiefern dies aus Perspektive der Therapiesuchenden gelungen ist. Fragestellung: Welche Erfahrungen machen Therapiesuchende während des Suchprozesses? Methoden: In leitfadengestützten Interviews wurden Therapiesuchende zu ihren Erfahrungen befragt. Die Aussagen wurden transkribiert und inhaltsanalytisch ausgewertet, bevor Generalisierungen abgeleitet wurden. Ergebnisse: 14 von 45 Therapiesuchenden konnten eine ambulante Therapie beginnen, 4 äußerten sich positiv, die Mehrheit berichtete von negativen Erfahrungen. Beklagt wurden wenig freie Plätze, lange Wartezeiten und geringe Unterstützung, ebenso wie die eingeschränkte Erreichbarkeit der Therapeut_innen. Symptom- und krankheitsspezifische Aspekte würden die Suche zusätzlich erschweren. Schlussfolgerung: Therapiesuchende müssen diverse Hürden überwinden, um eine adäquate Versorgung zu erhalten. Diesen einschränkenden Faktoren wird im aktuellen Gesundheitssystem nicht ausreichend entgegengewirkt, weswegen weitere Maßnahmen notwendig sind, um den Zugang zu ambulanter Psychotherapie zu erleichtern.
Melting Behavior of B1 FeO Up To 186 GPa: Existence of FeO‐Rich Melts in the Lowermost Mantle
Authors: Fu Suyu , Hirose Kei
Published: April 2024

FeO is an important component in both mantle silicates and core iron alloys. Understanding its melting behavior and physical properties is crucial for exploring the chemistry and physics of our planet. Here we report the melting curve of FeO up to 186 GPa from laser‐heating experiments in a diamond‐anvil cell coupled with synchrotron X‐ray diffraction (XRD) techniques. In‐situ observations of both temperature plateau and changes in XRD patterns were used as primary melting criteria. The ex‐situ examination of a recovered sample shows consistent melting temperatures of FeO with in‐situ determinations. Our melting curve of FeO agrees with existing low‐pressure data within uncertainties and is much lower than earlier experimental results above 100 GPa including those extrapolated by Lindemann's law. Our results indicate that FeO‐rich materials could be present as melts coexisting with surrounding solids in the lowermost mantle, providing plausible explanations to the seismically observed ultra‐low velocity zones.
Compositional Remote Sensing and Hyperspectral Laboratory Analyses of Sinters in Hydrothermal Fields in Chile, With Relevance to Astrobiological Targets on Mars
Authors: Cheng R. L. , Michalski J. R. , Campbell K. A.
Published: April 2024

Siliceous hot spring deposits, or sinters, deposit from hot spring discharge at Earth's surface and are sites of exceptional preservation of biosignatures. Their macro‐ and micro‐textures are regarded as important evidence of past microbial activities in hydrothermal environments. However, biology mimics do occur, and bona fide microbial textures could be destroyed by subsequent diagenesis or other post‐depositional processes. Thus, it is paramount to narrow the search for prospective Martian silica‐rich deposits that may contain biosignatures from both orbital and rover‐based perspectives. This study investigates hydrothermal deposits in Chile, which are analogs of high‐silica deposits discovered in the Gusev crater on Mars, through remote sensing and laboratory analysis. Results indicate that compositional remote sensing based on multispectral data with a high spatial resolution of <4 m/pixel reflects various concentrations of silica, which assisted in identifying the direction of discharged hydrothermal flows from the vent to the apron. Micro‐infrared mapping of sinters from similar hydrothermal fields linked spectral features to specific textures revealed by scanning electron microscope and chemical compositions confirmed by electron microprobe analysis, indicating that sinters with no shift in their emissivity minimum in the thermal infrared range were more likely to preserve cellular structures. An instrument for collecting multispectral data with higher spatial resolution could aid in characterizing the geologic settings of potential hot springs on Mars. Locating emissivity minima in the infrared regions of silica that do not shift to a lower position would suggest the potential for well‐preserved microbial structures in Martian sinters, if life ever did exist there.
Insights Into Venus' Crustal Plateaus From Dyke Trajectories Below Craters
Authors: Le Contellec Alexandra , Michaut Chloé , Maccaferri Francesco , Pinel Virginie , Chambat Frédéric , Smrekar Suzanne
Published: April 2024

On Venus, radar observations of the surface have highlighted two categories of craters: bright‐floored, interpreted as pristine, and dark‐floored, interpreted as being partially filled by lava. While volcanic resurfacing occurs within and outside craters in the plains, it seems mainly concentrated within the interior of dark‐floored craters in the crustal plateaus, suggesting that the magma is negatively buoyant there. Indeed, crater unloading may facilitate vertical ascent of a negatively buoyant magma by decompressing the underlying crust. However, the crater topography also generates a shear stress which would tend to horizontalize the vertical propagation of a dyke. We use numerical simulations of magma ascent in an axisymmetric crater stress field to demonstrate that, depending on the crust thickness and the magma‐crust density contrast, a negatively buoyant magma can indeed erupt only in the crater interior while remaining stored in the crust elsewhere. In particular, we identify four different behaviors depending on if and where a magma‐filled crack ascending below a crater reaches the surface. We draw a regime diagram as a function of two characteristic dimensionless numbers. For eruption to occur only in the crater interior requires a crust thinner than 45 km and a limited range of magma‐crust density contrasts, between 40 and 280 kg m−3 for crust thicknesses between 20 and 45 km, the permissible range decreasing for increasing crustal thicknesses. These results suggest that the crustal plateaus may not be particularly thick and could be slightly differentiated, but probably not very felsic.
Thank You to Our 2023 Peer Reviewers
Authors: Barros Ana , Becker Thorsten , Cardenas M. Bayani , Davidson Eric , Gruber Nicolas , Hofmann Eileen , Hudson Mary , Illangasekare Tissa , Kang Sarah , Montanari Alberto , Moreno Marcos , Nimmo Francis , Paxton Larry , Primeau Francois , Salters Vincent , Schimel David , Stevens Bjorn , Su Hang , Tierney Jessica , Trumbore Susan , Wuebbles Donald , Zeitler Peter , Zhang Binzheng , Zhang Xi
Published: April 2024

On behalf of the AGU Advances editorial team, we would like to express our sincere gratitude to everyone who reviewed manuscripts for us in 2023. Peer review is time‐consuming, but it remains essential to the scientific process. Advances reviewers continue to help define the scope of our journal by commenting specifically on whether a paper is likely to have broad and immediate impact. We also appreciate the degree to which reviewers have embraced AGU's open data strategies, although this obviously takes more time.
Supersaturation and Critical Size of Cloud Condensation Nuclei in Marine Stratus Clouds
Authors: Svensmark Henrik , Enghoff Martin Bødker , Svensmark Jacob , Thaler Irina , Shaviv Nir J.
Published: April 2024

Observations of marine stratus clouds in clean air off the Californian coast reveal a functional relationship between the number of cloud condensation nuclei (CCN) and supersaturation. Satellite‐derived liquid droplet density estimates the number density of CCN. Combining the estimated supersaturation using Köhler theory, global maps of supersaturation and the critical activation size of CCN are estimated. Here, we show that high supersaturation >0.5% persists over the oceans with a critical CCN size of 25–30 nm, which is smaller than the conventional wisdom of 60 nm. Independent support for such high supersaturation in the marine cloud is obtained from CCN measurements provided by the “Atmospheric Tomography Mission.” Higher supersaturation implies smaller activation size for CCN making cloud formation more sensitive to changes in aerosol nucleation.
Turbulent Dynamics of Buoyant Melt Plumes Adjacent Near‐Vertical Glacier Ice
Authors: Nash Jonathan D. , Weiss Kaelan , Wengrove Meagan E. , Osman Noah , Pettit Erin C. , Zhao Ken , Jackson Rebecca H. , Nahorniak Jasmine , Jensen Kyle , Tindal Erica , Skyllingstad Eric D. , Cohen Nadia , Sutherland David A.
Published: April 2024

At marine‐terminating glaciers, both buoyant plumes and local currents energize turbulent exchanges that control ice melt. Because of challenges in making centimeter‐scale measurements at glaciers, these dynamics at near‐vertical ice‐ocean boundaries are poorly constrained. Here we present the first observations from instruments robotically bolted to an underwater ice face, and use these to elucidate the interplay between buoyancy and externally forced currents in meltwater plumes. Our observations captured two limiting cases of the flow. When external currents are weak, meltwater buoyancy energizes the turbulence and dominates the near‐boundary stress. When external currents strengthen, the plume diffuses far from the boundary and the associated turbulence decreases. As a result, even relatively weak buoyant melt plumes are as effective as moderate shear flows in delivering heat to the ice. These are the first in‐situ observations to demonstrate how buoyant melt plumes energize near‐boundary turbulence, and why their dynamics are critical in predicting ice melt.
Non-thermal phonon dynamics and a quenched exciton condensate probed by surface-sensitive electron diffraction
Authors: Kurtz Felix , Dauwe Tim N. , Yalunin Sergey V. , Storeck Gero , Horstmann Jan Gerrit , Böckmann Hannes , Ropers Claus
Published: April 2024

Interactions among and between electrons and phonons steer the energy flow in photo-excited materials and govern the emergence of correlated phases. The strength of electron–phonon interactions, decay channels of strongly coupled modes and the evolution of three-dimensional order are revealed by electron or X-ray pulses tracking non-equilibrium structural dynamics. Despite such capabilities, the growing relevance of inherently anisotropic two-dimensional materials and functional heterostructures still calls for techniques with monolayer sensitivity and, specifically, access to out-of-plane phonon polarizations. Here, we resolve non-equilibrium phonon dynamics and quantify the excitonic contribution to the structural order parameter in 1T-TiSe2. To this end, we introduce ultrafast low-energy electron diffuse scattering and trace strongly momentum- and fluence-dependent phonon populations. Mediated by phonon–phonon scattering, a few-picosecond build-up near the zone boundary precedes a far slower generation of zone-centre acoustic modes. These weakly coupled phonons are shown to substantially delay overall equilibration in layered materials. Moreover, we record the surface structural response to a quench of the material’s widely investigated exciton condensate, identifying an approximate 30:70 ratio of excitonic versus Peierls contributions to the total lattice distortion in the charge density wave phase. The surface-sensitive approach complements the ultrafast structural toolbox and may further elucidate the impact of phonon scattering in numerous other phenomena within two-dimensional materials, such as the formation of interlayer excitons in twisted bilayers.
Microbiome confounders and quantitative profiling challenge
predicted microbial targets in colorectal cancer development
Authors: Tito Raúl Y. , Verbandt Sara , Aguirre Vazquez Marta , Lahti Leo , Verspecht Chloe , Lloréns-Rico Verónica , Vieira-Silva Sara , Arts Janine , Falony Gwen , Dekker Evelien , Reumers Joke , Tejpar Sabine , Raes Jeroen
Published: April 2024

Despite substantial progress in cancer microbiome research, recognized
confounders and advances in absolute microbiome quantification remain underused;
this raises concerns regarding potential spurious associations. Here we study the
fecal microbiota of 589 patients at different colorectal cancer (CRC) stages and
compare observations with up to 15 published studies (4,439 patients and controls
total). Using quantitative microbiome profiling based on 16S ribosomal RNA amplicon
sequencing, combined with rigorous confounder control, we identified transit time,
fecal calprotectin (intestinal inflammation) and body mass index as primary
microbial covariates, superseding variance explained by CRC diagnostic groups.
Well-established microbiome CRC targets, such as Fusobacterium nucleatum, did not significantly associate with CRC
diagnostic groups (healthy, adenoma and carcinoma) when controlling for these
covariates. In contrast, the associations of Anaerococcus
vaginalis, Dialister pneumosintes,
Parvimonas micra, Peptostreptococcus anaerobius, Porphyromonas
asaccharolytica and Prevotella
intermedia remained robust, highlighting their future target
potential. Finally, control individuals (age 22–80 years, mean
57.7 years, standard deviation 11.3) meeting criteria for colonoscopy (for
example, through a positive fecal immunochemical test) but without colonic lesions
are enriched for the dysbiotic Bacteroides2 enterotype, emphasizing uncertainties in
defining healthy controls in cancer microbiome research. Together, these results
indicate the importance of quantitative microbiome profiling and covariate control
for biomarker identification in CRC microbiome studies.
Adsorption and bacterial performance of Nd2O3 modified Ag nanoparticles with enhanced degradation of methylene blue
Authors: Elabbasy Mohamed Tharwat , El-Morsy M. A. , Awwad Nasser S. , Ibrahium Hala A. , Menazea A. A.
Published: April 2024

Our study focused on the optical behavior, methylene blue (MB) dye degradation potential, antibacterial performance, and silver and trioxide mineral interaction with different bacterial species. We found that the addition of silver nanoparticles (Ag NPs) to neodymium oxide (Nd2O3) resulted in a significant response, with an enlargement of the inhibition zone for bacterial species such as Staphylococcus aureus and Escherichia coli. Specifically, the inhibition zone for S. aureus increased from 9.3 ± 0.5 mm for pure Nd2O3 to 16.7 ± 0.4 mm for the Ag/Nd2O3 nano-composite, while for E. coli, it increased from 8.8 ± 0.4 mm for Nd2O3 to 15.9 ± 0.3 mm for Ag/Nd2O3. Furthermore, the optical behavior of the composites showed a clear band-gap narrowing with the addition of Ag NPs, resulting in enhanced electronic localization. The direct and indirect transitions reduced from 6.7 to 6.1 eV and from 5.2 to 2.9 eV, respectively. Overall, these results suggest that the Ag/Nd2O3 nano-composite has potential applications in sensor industries and water treatment, thanks to its enhanced optical behavior, antibacterial performance, and efficient MB degradation capabilities. In terms of MB degradation, the Ag/Nd2O3 mixed system exhibited more efficient degradation compared to pure Nd2O3. After 150 min, the MB concentration in the mixed system decreased to almost half of its starting point, while pure Nd2O3 only reached 33%.
MoO3/WO3/rGO as electrode material for supercapacitor and catalyst for methanol and ethanol electrooxidation
Authors: Askari Mohammad Bagher , Salarizadeh Parisa , Ramezan zadeh Mohammad Hassan
Published: April 2024

The potential of metal oxides in electrochemical energy storage encouraged our research team to synthesize molybdenum oxide/tungsten oxide nanocomposites (MoO3/WO3) and their hybrid with reduced graphene oxide (rGO), in the form of MoO3/WO3/rGO as a substrate with relatively good electrical conductivity and suitable electrochemical active surface. In this context, we presented the electrochemical behavior of these nanocomposites as an electrode for supercapacitors and as a catalyst in the oxidation process of methanol/ethanol. Our engineered samples were characterized by X-ray diffraction pattern and scanning electron microscopy. As a result, MoO3/WO3 and MoO3/WO3/rGO indicated specific capacitances of 452 and 583 F/g and stability of 88.9% and 92.6% after 2000 consecutive GCD cycles, respectively. Also, MoO3/WO3 and MoO3/WO3/rGO nanocatalysts showed oxidation current densities of 117 and 170 mA/cm2 at scan rate of 50 mV/s, and stability of 71 and 89%, respectively in chronoamperometry analysis, in the MOR process. Interestingly, in the ethanol oxidation process, corresponding oxidation current densities of 42 and 106 mA/cm2 and stability values of 70 and 82% were achieved. MoO3/WO3 and MoO3/WO3/rGO can be attractive options paving the way for prospective alcohol-based fuel cells.
The role of the North Atlantic Ocean on the increase in East Asia’s spring extreme hot day occurrences across the early 2000s
Authors: Lee Yong-Han , Yeh Sang-Wook , Kim Jeong-Hun , Kim Maeng-Ki
Published: April 2024

The occurrence frequency of East Asia’s extreme hot day in boreal spring has increased since 1979. Using observational data and a Linear baroclinic model experiment, our study suggests that the occurrence of hot day is mainly due to anomalous high pressure over East Asia associated with a horizontal stationary wave train originating from a positive phase of the North Atlantic Tripole (NAT) sea surface temperature (SST) in spring. The effect of a positive phase of the NAT SST is evident in the 2000s, apparently associated with the linear trend of the North Atlantic SST like a positive phase of the NAT SST. Before 2000s, in contrast, SST forcing in the Indian Ocean and eastern tropical Pacific, which is associated with a negative phase of the NAT SST, may contribute to induce the East Asian hot days through atmospheric teleconnections. This implies that the relationship between a positive phase of the NAT SST and the occurrence of hot days in East Asia has been changed during the 2000s.
A new gas detection technique through cross-correlation with a complex aperiodic FBG
Authors: Rahme Matthew , Tuthill Peter , Betters Christopher , Large Maryanne , Leon-Saval Sergio
Published: April 2024

Optical cross-correlation is a technique that can achieve both high specificity and high sensitivity when deployed as the basis for a sensing technology. Offering significant gains in cost, size and complexity, it can also deliver significantly higher signal-to-noise ratios than traditional approaches such as absorption methodologies. In this paper, we present an optical cross-correlation technology constructed around a bespoke customised Fiber Bragg Grating (FBG). Exploiting the remarkable flexibility in design enabled by multiple aperiodic Bragg gratings, optical filters are devised that exactly mimic the absorption features of a target gas species (for this paper, acetylene $$C_2H_2$$

C
2

H
2

) over some waveband of interest. This grating forms the heart of the sensor architecture described here that employs modulated optical cross-correlation for gas detection. An experimental demonstration of this approach is presented, and shown to be capable of differentiating between different concentrations of the $$C_2H_2$$

C
2

H
2

target gas. Furthermore these measurements are shown to be robust against interloper species, with minimal impact on the detection signal-to-noise arising from the introduction of contaminant gases. This represents is a significant step toward the use of customised FBGs as low-cost, compact, and highly customisable photonic devices for deployment in gas detection.
A link between circulating immune complexes and acute kidney injury in human visceral leishmaniasis
Authors: Corrêa-Castro Gabriela , Silva-Freitas Maria Luciana , de Paula Ludmila , Soares Pereira Leonardo , Dutra Maria Rita Teixeira , Albuquerque Hermano Gomes , Cota Glaucia , de Azevedo Martins Caroline , Da-Cruz Alda Maria , Gomes-Silva Adriano , Santos-Oliveira Joanna Reis
Published: April 2024

Visceral leishmaniasis (VL) is an infectious disease caused by Leishmania infantum. Clinically, VL evolves with systemic impairment, immunosuppression and hyperactivation with hypergammaglobulinemia. Although renal involvement has been recognized, a dearth of understanding about the underlying mechanisms driving acute kidney injury (AKI) in VL remains. We aimed to evaluate the involvement of immunoglobulins (Igs) and immune complexes (CIC) in the occurrence of AKI in VL patients. Fourteen VL patients were evaluated between early treatment and 12 months post-treatment (mpt). Anti-Leishmania Igs, CIC, cystatin C, C3a and C5a were assessed and correlated with AKI markers. Interestingly, high levels of CIC were observed in VL patients up to 6 mpt. Concomitantly, twelve patients met the criteria for AKI, while high levels of cystatin C were observed up to 6 mpt. Plasmatic cystatin C was positively correlated with CIC and Igs. Moreover, C5a was correlated with cystatin C, CIC and Igs. We did not identify any correlation between amphotericin B use and kidney function markers in VL patients, although this association needs to be further explored in subsequent studies. Our data reinforce the presence of an important renal function impairment during VL, suggesting the involvement of Igs, CIC, and C5a in this clinical condition.