bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fly ash-doped biochar fabricated by pyrolysis and hydrothermal strategies: characteristics and potentialities of carbon sequestration
Authors: Li Gang , Ye Rongchuan , Wu Shumin , Liu Xianghui , Huang Meijing , Guo Jianda , Gao Yan , Chen Wei , Ma Yan 
Published: February 2025

Abstract
The oxidation of biochar occurs due to both natural and human influences during the soil carbon sequestration process. Therefore, it is crucial to produce high-stability biochar to achieve carbon neutrality. Fly ash-doped biochar was obtained from fly ash and corn stalks by employing hydrothermal/pyrolysis treatment, along with alkali impregnation at different temperatures. The microstructural characteristics and carbon sequestration potentials were studied as an essential performance parameter that was influenced by mineral doping and treatment temperature. The yield and carbon retention of P500-1:2 improved by 54.15% and 6.81%, respectively, and the carbon loss following H2O2 oxidation was only 9.93% as depicted by the results. In comparison with hydrothermal biochar, pyrolysis biochar is superior in terms of its carbon sequestration potential. SiO2, Al2O3 and other components in fly ash continue to dissolve at high temperatures and react with carbon in biochar, promoting the formation of aromatic carbon and generating a physical protective layer to prevent biochar from oxidation, hence improving the chemical and thermal stability of biochar. High temperature and mineral interaction also contribute to high aromatic structure (H:C < 0.4) formation, significantly improving the specific surface area and thermal stability of biochar.

Graphical Abstract
Reevaluating the Organization of Lapidary Production at Chaco Canyon
Authors: Mattson Hannah V. 
Published: February 2025

Abstract
Several decades ago, the National Park Service's Chaco Project revealed evidence for widespread ornament manufacture at small sites (small houses) in Chaco Canyon, New Mexico, as well as possible workshop-scale production at two of these locations. Given that consumption of finished jewelry items is clearly concentrated at large sites (great houses), it was suggested that lapidary production was part of a larger corporate political strategy, in which goods produced in surrounding small houses were used to sustain communal events related to construction activities and ritual performances at great houses. This article addresses a critical gap in this narrative—ornament production at great houses. Using Pueblo Bonito as a case study, I present the results of a systematic analysis of lapidary tools from the site and characterize the nature of on-site ornament manufacture. I find evidence that significant jewelry-making was occurring at Pueblo Bonito, at least on par with previously documented small-house jewelry workshops, and that a portion of this was embedded within elite households. These results require us to reconsider the role of ornament production in Chacoan political economy.
Study on shock reduction during pyro-actuated separation mechanism by use of shock absorbers and dampers
Authors: Chakraborty A. , Laxman D. , Srinivasan R. , Khalane S.A. , Ramakrishna P.A. , Murthy H. 
Published: February 2025

Abstract
The current emphasis in aerospace component development is on creating safe, reliable and cost-effective technologies. However, the intricate design of stage separation systems renders component reliability a critical factor in determining mission success or failure. One of the technical challenges involves the development of various aerospace mechanisms, such as payload separation, heavy propulsion system separation, ejection of auxiliary components and detachment of rigid components. These stage separation mechanisms commonly employ pyrotechnic devices, which, by their operational nature, impart shock to the spacecraft, potentially causing damage or adverse effects on flight instruments. Therefore, it is imperative to explore multiple viable concepts aimed at reducing shock and experimentally ascertain the impact of shock using diverse shock attenuation techniques. While existing literature primarily addresses shock attenuation with distance from the shock source, limited attention has been given to diminishing shock at the location of the shock-generating element. This study employed various shock-attenuating devices, including dampers, metallic foam structures, viscous materials and dampeners, to assess the effectiveness of shock reduction. Furthermore, the study investigated shock reduction resulting from the elimination of rigid connections, such as bolted joints, from pyro-actuated mechanisms. Through a series of experiments, a conclusive analysis was conducted to determine the approach for achieving a substantial reduction in pyro shock.
A study on the mixing and infrared signal characteristics of a lobed mixer in a micro turbojet engine
Authors: Lee C. , Choi S.M. 
Published: February 2025

Abstract
In this study, measurements and numerical analyses of the temperature distribution of exhaust gas passing through two types of mixers using a micro turbojet engine were performed to investigate the flow mixing performance based on the shape of the mixer, which mixes the bypass air and core air in a gas turbine turbofan engine. To study the mixing characteristics of the mixer, compressed air was supplied through an external duct mounted on a micro turbojet engine to simulate bypass flow, and a system in which hot gas and compressed air were mixed and ejected into the atmosphere was fabricated. A confluent-type mixer and a mixer with 8-lobed mixer channels in the form of a sine wave were used for the experiment. The exhaust gas temperature was measured based on the distance from the nozzle outlet at bypass ratios of 0.5, 1.0 and 1.4. The results showed that the lobed mixer is more effective than the confluent mixer in lowering the exhaust gas temperature as the bypass ratio increased. Numerical analysis results indicated that, in the case of the confluent mixer, flow mixing is primarily performed by shear flow owing to the velocity difference between the core gas and the bypass air. In contrast, in the case of a lobed mixer, flow mixing is achieved through rotational motion and transverse flow. In addition, when the number of lobe channels increased from 8 to 12, the rotational motion increased and the mixing performance improved. Furthermore, infrared signal calculation results confirmed that, as the number of lobe channels increased, improved flow mixing effectively reduced the infrared signal. We conclude that this study helps understand the mixing characteristics of the flow according to the shape of the mixer at various bypass ratios and determine their effect on the characteristics of the infrared signal.
A Ritual Approach to Patent Law
Authors: Tilt David 
Published: February 2025

Abstract
This article applies van Gennep’s structure of the ritual to the patent application process, arguing that information undergoes several ontological transformations on the way to patentability. The second half of the article applies Turner’s focus on the liminal space. From this perspective, the ‘pure possibility’ of the liminal space is essential to patent law, because it helps negotiate between strong boundaries (as a form of property) and the almost improvisational way in which general rules are applied to specific patents. Taken together, these two approaches provide a more nuanced understanding of how patent law comes into existence and how the patents themselves operate as distinct social and cultural artefacts. The analysis does not intend to replace the economic understanding of patent law, but instead seeks to reflect more completely how it actually functions.
Pre-disaster Health Vulnerabilities Predict Major Depressive Disorder Symptoms Among High-Risk Puerto Rican Adults after Hurricanes Maria and Irma
Authors: Musicaro Regina M. , Valdespino-Hayden Zerbrina , Lozano Marijulie Martinez , Ramos Carlamarie Noboa , Joshipura Kaumudi , Lowe Sarah R. 
Published: February 2025

Abstract

Objective
Robust research has established that preexisting physical and mental health conditions increase risk for adverse psychiatric outcomes after disasters. However, it is unclear if increased risk is independent of disaster exposure, and most studies have relied on retrospective reports of pre-disaster functioning.

Methods
In a pre-post sample of high-risk Puerto Rican adults (N = 361) who experienced Hurricanes Irma and Maria, we assessed: 1) whether indicators of pre-disaster depression and physical health conditions were associated with posttraumatic stress disorder (PTSD) and major depressive disorder (MDD) symptoms; and 2) whether the effects of pre-disaster depression and physical health conditions on PTSD and MDD symptoms were indirect via disaster exposure or had exacerbated the effects of disaster exposure on PTSD and MDD symptoms.

Results
Pre-disaster depression and physical health problems were significantly associated with higher post-disaster MDD symptoms (B = 1.50, SE = 0.36, p < .001, and B = 0.21; SE = 0.09, P = 0.016), but not PTSD symptoms. Indirect effects of pre-disaster depression and physical health symptoms via disaster exposure were non-significant, and neither moderated the association of disaster exposure on PTSD and MDD symptoms.

Conclusions
Research is needed to understand other pathways through which pre-disaster health conditions predict post-disaster mental health.
Falling behind the PACE: lie detectors, policing and lack of foreseeability – an FOI-based study
Authors: Kotsoglou Kyriakos N. , Oswald Marion 
Published: February 2025

Abstract
Despite its contested scientific validity, polygraph interviewing is now an established yet opaque practice within criminal justice in England and Wales, with statute law covering polygraph use in the context of probation for released offenders. In this paper, we highlight non-statutory uses of the polygraph by police forces in England and Wales by presenting analysis of responses to freedom of information (FOI) requests. The boundaries around police polygraph use are undefined and potentially elastic. The policies disclosed state that polygraph interviewing is conducted with regard to the Police and Criminal Evidence Act 1984 (PACE) and the Human Rights Act 1998; yet it is denied that a polygraph examination is a criminal interview conducted under PACE. Furthermore, there is a significant risk that the common law may not satisfy the quality of law requirement insofar as it is insufficiently clear who will be subject to polygraph testing, why and in what circumstances. Therefore, we argue that the legal basis for the police’s use of the polygraph is inadequate and imprecise. Without openness and scrutiny regarding the extent of this use, it is difficult to see how the key human rights principle of foreseeability can protect citizens from the risk of arbitrariness.
BOUNDED CONJUGACY CLASSES AND CONJUGACY CLASSES SUPPORTING INVARIANT MEASURES AND AUTOMORPHISMS
Authors: RAJA C. R. E. 
Published: February 2025

Abstract
We consider conjugacy classes in a locally compact group G that support finite G-invariant measures. If G is a property (M) extension of an abelian group, in particular, if G is a metabelian group, then any such conjugacy class is relatively compact. As an application, centralisers of lattices in such groups have bounded conjugacy classes. We use the same techniques to obtain results in the case of totally disconnected, locally compact groups.
DIAGONAL KNOTS AND THE TAU INVARIANT
Authors: ARNDT JACKSON , JANSEN MALIA , MCBURNEY PAYTON , VANCE KATHERINE 
Published: February 2025

Abstract
In 2003, Ozsváth, Szabó and Rasmussen introduced the

$\tau $

invariant for knots, and in 2011, Sarkar [‘Grid diagrams and the Ozsváth–Szabó tau-invariant’, Math. Res. Lett.18(6) (2011), 1239–1257] published a computational shortcut for the

$\tau $

invariant of knots that can be represented by diagonal grid diagrams. Previously, the only knots known to have diagonal grid diagram representations were torus knots. We prove that all such knots are positive knots and we produce an example of a knot with a diagonal grid diagram representation which is not a torus knot.
The impact of genes and environment assessed longitudinally on psychological and somatic distress in twins from ages 15 to 35 years
Authors: Gillespie Nathan A. , Couvy-Duchesne Baptiste , Neale Michael C , Hickie Ian B. , Martin Nicholas G 
Published: February 2025

Abstract

Background
Genetically informative twin studies have consistently found that individual differences in anxiety and depression symptoms are stable and primarily attributable to time-invariant genetic influences, with non-shared environmental influences accounting for transient effects.

Methods
We explored the etiology of psychological and somatic distress in 2279 Australian twins assessed up to six times between ages 12–35. We evaluated autoregressive, latent growth, dual-change, common, and independent pathway models to identify which, if any, best describes the observed longitudinal covariance and accounts for genetic and environmental influences over time.

Results
An autoregression model best explained both psychological and somatic distress. Familial aggregation was entirely explained by additive genetic influences, which were largely stable from ages 12 to 35. However, small but significant age-dependent genetic influences were observed at ages 20–27 and 32–35 for psychological distress and at ages 16–19 and 24–27 for somatic distress. In contrast, environmental influences were predominantly transient and age-specific.

Conclusions
The longitudinal trajectory of psychological distress from ages 12 to 35 can thus be largely explained by forward transmission of a stable additive genetic influence, alongside smaller age-specific genetic innovations. This study addresses the limitation of previous research by exhaustively exploring alternative theoretical explanations for the observed patterns in distress symptoms over time, providing a more comprehensive understanding of the genetic and environmental factors influencing psychological and somatic distress across this age range.
Probabalistic reinforcement learning impairments predict negative symptom severity and risk for conversion in youth at clinical high-risk for psychosis
Authors: Luther Lauren , Raugh Ian M. , Strauss Gregory P. 
Published: February 2025

Abstract

Background
Elucidation of transphasic mechanisms (i.e., mechanisms that occur across illness phases) underlying negative symptoms could inform early intervention and prevention efforts and additionally identify treatment targets that could be effective regardless of illness stage. This study examined whether a key reinforcement learning behavioral pattern characterized by reduced difficulty learning from rewards that have been found to underlie negative symptoms in those with a schizophrenia diagnosis also contributes to negative symptoms in those at clinical high-risk (CHR) for psychosis.

Methods
CHR youth (n = 46) and 51 healthy controls (CN) completed an explicit reinforcement learning task with two phases. During the acquisition phase, participants learned to select between pairs of stimuli probabilistically reinforced with feedback indicating receipt of monetary gains or avoidance of losses. Following training, the transfer phase required participants to select between pairs of previously presented stimuli during the acquisition phase and novel stimuli without receiving feedback. These test phase pairings allowed for inferences about the contributions of prediction error and value representation mechanisms to reinforcement learning deficits.

Results
In acquisition, CHR participants displayed impaired learning from gains specifically that were associated with greater negative symptom severity. Transfer performance indicated these acquisition deficits were largely driven by value representation deficits. In addition to negative symptoms, this profile of deficits was associated with a greater risk of conversion to psychosis and lower functioning.

Conclusions
Impairments in positive reinforcement learning, specifically effectively representing reward value, may be an important transphasic mechanism of negative symptoms and a marker of psychosis liability.
On the Generalization of Learned Constraints for ASP Solving in Temporal Domains
Authors: ROMERO JAVIER , SCHAUB TORSTEN , STRAUCH KLAUS 
Published: February 2025

Abstract
The representation of a temporal problem in answer set programming (ASP) usually boils down to using copies of variables and constraints, one for each time stamp, no matter whether it is directly encoded or expressed via an action or temporal language. The multiplication of variables and constraints is commonly done during grounding, and the solver is completely ignorant about the temporal relationship among the different instances. On the other hand, a key factor in the performance of today’s ASP solvers is conflict-driven constraint learning. Our question in this paper is whether a constraint learned for particular time steps can be generalized and reused at other time steps, and ultimately whether this enhances the overall solver performance on temporal problems. Knowing well the domain of time, we study conditions under which learned dynamic constraints can be generalized. Notably, we identify a property of temporal representations that enables the generalization of learned constraints across all time steps. It turns out that most ASP planning encodings either satisfy this property or can be easily adapted to do so. In addition, we propose a general translation that transforms programs to fulfill this property. Finally, we empirically evaluate the impact of adding the generalized constraints to an ASP solver.
Analysis of genetic diversity in caigua (Cyclanthera pedata (L.) Schrad.) in mid-hill of the Indian Himalayas
Authors: Dev Rahul , Hedau Nirmal Kumar , Pal Ramesh Singh , Paschapur Amit , Kant Lakshmi 
Published: February 2025

Abstract
The genetic diversity of Cyclanthera pedata was assessed through agro-morphological, mineral composition and biochemical traits. Field surveys across India documented its wide ecological distribution (18.66°–31.02°N, 78.05°–83.27°E, 131–3665 m AMSL) in Andhra Pradesh and northwest Himalayan region. Field evaluations were conducted during Kharif 2021 and 2022 at ICAR-Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora (1250 m AMSL). Significant genotypic variation was observed in fruit yield (195–1505 g/plant), fruit numbers (36–364 per plant), chlorophyll content (0.49–2.61 μg/g) and antioxidant activities (16.02–39.04 mM Trolox equivalent/g DW). Notable genotypes included RK-40 (highest yield of 1505 g/plant), RK-01 (early flowering) and RK-33 (early fruiting). High coefficients of variation (>23%) were noted in total chlorophyll, carotenoids and FRAP values. Genotype RK-42 excelled in antioxidant activities and carotenoids. Hierarchical cluster analysis grouped the germplasm into four clusters based on critical traits independent of geographic origin. In contrast, principal component analysis identified traits like polyphenols, antioxidants, seed weight and fruit yield as significant contributors to phenotypic variation. The biplot revealed relationships between traits, such as positive correlations between fruit yield, fruit and pulp weight, and biochemical traits like DPPH and ABTS. Genotypes such as IC 430006, IC 356007, IC 393261, IC 393308, UKAl 1 and IC 361297 display distinct profiles. These findings highlight critical traits for breeding and conservation efforts, particularly for enhancing fruit yield and biochemical attributes in C. pedata germplasm.
Call, Response, and Compromisso: Ethical Practice in Capoeira of Backland Bahia, Brazil
Authors: Kurtz Esther Viola 
Published: February 2025

Abstract
In the Afro-Brazilian music-movement form capoeira, call and response saturates all interactions in live performance events (rodas). In addition to call-and-response song structures, music calls bodies into movement, bodies call to one another, and movements invoke responses from instrumentalists. Yet call and response does more than organize the roda. Demonstrating how antiphony organizes group sociality, the article argues that the music and movement also summon members to assume a range of responsibilities within the group and their lives. These include showing up for trainings and rodas, maintaining instruments, preparing for annual events, and teaching capoeira to younger generations in Bahia's underserved communities. Practitioners frame their ethical commitments to capoeira as compromisso, a concept that implies broad, long-term dedication. Grounding the study in my ethnographic research conducted in Brazil, I bridge Black music scholarship with ethical Africana philosophy to argue that capoeira practitioners use knowledge generated in their music-movement practice to conceive an ethics of compromisso. While the literature on Black musics across the Americas widely acknowledges call and response as a foundational musical mechanism, few ethnographic studies have delved more deeply into the social, ethical, and political potentials of antiphony. The article thus contributes to understandings of how Black music-dance practices generate ethical knowledge and practice through their sounds and movements. As capoeira's antiphony transcends the roda's space-time, it calls practitioners to assume an unending compromisso, making commitments that span generations to continually leverage capoeira's lessons to improve lives in Black communities of backland Bahia.
From Stance to Identity within Signs: Noncommercial Slogans in China
Authors: Zhang Mengli , Zhang Tianwei 
Published: February 2025

Abstract
This paper investigates noncommercial slogans, one prevalent type of linguistic signs in China, examining the stances and identities emerging from these signs, and the relevant contexts from which they emerge. Du Bois’ stance triangle model is adapted and employed in the case study of Zhengzhou urban–rural slogans, combining qualitative and quantitative methods via BFSU Qualitative Coder 1.2. Results show a higher proportion of evaluative and alignment stances than positioning stance, including affective and epistemic stances, in both urban and rural areas. A notable distinction lies in the proportion of positioning stance, with a relatively lower prevalence in rural areas compared to urban areas. Second, these stances index the identities as an object-centered evaluator, a collectively intersubjectivity-centered aligner, as well as the self-local/translocal identity. Third, the analysis reveals Chinese economic, administrative, cultural, social, and political contexts related to the emergence of the identities within these signs.