bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating magnetic and optical properties of layered iron phosphorus trisulfide intercalated with organic compounds
Authors: Saleh Hisham A , El-Shafey Shaymaa E , Abdel-karim Amal M , Tohamy Mahmoud S , El-Meligi Amin A 
Published: December 2024

Abstract
This study focuses on testing the optical and magnetic properties of the layered iron phosphorous trisulfide nanomaterial (FePS3) with methyl viologen (MV) (1,1′-dimethyl–4,4′-bipyridilium dichloride) and butyl amine (BA). The materials were characterized using x-ray diffraction (XRD), Scanning electron microscope (SEM), transmittance electron microscope (TEM), Infrared spectroscopy (IR), optical measurement, and magnetic property measurements (VSM). SEM image shows lamellar and layered structure of the FePS3, and TEM images represents nanoscale particles, approximately 14–26 nm in size. The FePS3 fingerprint hkl phases detected by XRD prior to intercalation. The intercalation of MV into the interlayer space of FePS3 caused a phase transformation, and the hkl phases of FePS3 disappeared; this is because the intercalation modifies the crystal structure of the FePS3, and preferred orientation causes the disappearance of the original hkl phases too. Magnetic testing of the M-H curve shows that FePS3 is antiferromagnetic, but it becomes paramagnetic after intercalation with MV. The intercalation of FePS3 with BA resulted in narrow magnetic hysteresis loops, indicating ferromagnetic behavior. Extremely small amounts of residual magnetism (Hr) are produced due to the narrow magnetic hysteresis loop. Intercalation with MV and BA enhances FePS3 reflectivity. The intercalated compounds, FePS3-MV and FePS3-BA, show a rise in band gap energy.
Quantum transport through a quantum dot coupled to a pair of superconducting topological nanowires
Authors: AIT BAHADOU MOHAMED , Abderrahim El Allati , El Anouz Khadija 
Published: December 2024

Abstract
In this study, we analyze quantum transport using a quantum dot coupled to four Majorana bound states conﬁned to the ends of two superconducting topological nanowires. Particularly, we investigate how quantum transport aﬀects the magnetic ﬂux phase of the second nanowire and electron-phonon interaction. When the Majorana bound states are hybridized, the periodicity of zero-temperature linear conductance shifts from 2π to 4π. This takes place as the magnetic ﬂux phase of the second nanowire changes from states with zero-energy modes to states without it. However, during the ﬁxed magnetic ﬂux phase, the zero-energy modes appear toward the end of the second nanowaire. Indeed, we observe that the periodicity goes from 4π to 2π when we change the Majorana bound states from unhybridized to hybridized states. Linear conductance is measured independently of electron-phonon interactions and quantum dot energy. Furthermore, we show that the diﬀerential conductance periodicity changes from 2π when the Majorana bound states are nonoverlapping. It achieves 4π periodicity if the Majorana bound states overlap with regard to a magnetic ﬂux phase in a state without zero-energy modes. Nevertheless, a state with zero-energy modes of the magnetic ﬂux phase remains ﬁxed at 4π. Finally, we conclude that our results illuminate the expected behavior of topological quantum computational platforms.&#xD;
Optimizing quantum reflection of Bose–Einstein condensates with angle of incidence
Authors: Musyayyadah H A , Halif M N A , Ripai A , Abdullah Z 
Published: December 2024

Abstract
We investigated the effect of the angle of incidence on the quantum reflection of Bose–Einstein condensates (BECs) from regions with rapid potential variations. The reflection process was examined for both isotropic and anisotropic 2D disk-shaped BECs. In both cases, the angle of incidence was found to play a crucial role during reflection, inducing non-uniform atom-surface interactions and thus manipulating severe disruptions on the atomic cloud in the low incident velocity regime. In this scenario, the angle of incidence minimizes or even eliminates disruptions or fragmentation of the atomic cloud, especially for incidence angles far from the normal incidence direction. Consequently, anomalous reflectivity or saturation effects, which have been challenging in previous studies, can be effectively addressed and controlled. These findings provide new insights into optimizing the quantum reflection of BECs from a solid surface, particularly regarding the enhancement of the reflection probability of BECs from a planar silicon surface, which, since their first experiments, have not been maximized due to saturation effects.
f(T, TG) gravity theory: observational constraints for Barrow holographic dark energy with Hubble and Granda-Oliveros cutoff
Authors: Gupta Sanjeev , Dixit Archana , Pradhan Anirudh , Ghaderi K 
Published: December 2024

Abstract
The reconstruction technique and stability of various well-known cosmological parameters of f(T, T

G
) gravity are investigated in this paper, where T and T

G
denote the torsion scalar and Gauss-Bonnet invariant torsion component. In this model, we consider Barrow holographic dark energy (BHDE) as candidates of IR cut-offs and develop the corresponding field equations. In our analysis, we have examined two well-known IR cutoffs Hubble and GrandaOliveros (GO) cutoffs. Our findings indicate a transition from a deceleration phase to an accelerated phase in the Universe for both cutoff scenarios, aligning with recent observational data. A reconstruction method is introduced to analyze the parameters linked to BHDE within the framework of viscous cosmology. Our investigation revealed that the power-law cosmology effectively aligns with the observational datasets. By combining the Markov Chain Monte Carlo (MCMC) technique with Bayesian analysis and likelihood function, we were able to determine the model parameters H
0 = 69.6 ± 1.8 km/s/Mpc; q = − 0.281 ± 0.034 and

M

= 23.846 ± 0.010. We have solved the modified Einstein’s field equations by taking the bulk-viscosity component ξ = ξ
0 + ξ
1
H. Additionally, we have examined the energy conditions to assess the consistency of our model.
Scalaron dark matter and the thermal history of the universe
Authors: Shtanov Yuri 
Published: December 2024

Abstract
In metric f(R) gravity minimally coupled to the Standard Model, the scalaron field can act as a dark-matter candidate if its mass lies in the range meV ≲ m ≲ MeV. The evolution of the scalaron is influenced by the trace of the stress-energy tensor, whose behaviour, as shown in our previous work, becomes non-adiabatic during the electroweak crossover, potentially triggering scalaron oscillations. While we previously approximated this crossover as a second-order phase transition at the one-loop level, the transition is actually smoother. In this paper, we refine our analysis to account for this smooth crossover and show that scalaron oscillations are still excited in a qualitatively similar manner, driven by the rapid dynamics of the electroweak crossover observed in numerical lattice simulations, provided the scalaron mass is sufficiently small. We also investigate the time-dependent contribution to the stress-energy trace due to the trace anomaly of quantum chromodynamics. Our results indicate that, while the trace anomaly shifts the scalaron's equilibrium value, this shift evolves adiabatically compared to the fast oscillations of the scalaron, meaning that the trace anomaly does not significantly affect the potential cosmological scenarios for scalaron evolution.
Contribution of spin states to Seebeck coefficient of a single-layer zigzag graphene nanoribbons
Authors: Prayitno Teguh Budi 
Published: December 2024

Abstract
We investigated the contribution of spin-up and spin-down states to the Seebeck coefficient in single-layer zigzag graphene nanoribbons. Firstly, we performed first-principles calculations to obtain the band energies which contain the energy dispersions of the spin-up and spin-down states. Here, we considered collinear ferromagnetic and antiferromagnetic edge states. From the obtained electronic structure, we employed the Boltzmann theory to extract the data of the Seebeck coefficient based on the spin-up and spin-down states. We found that each state gives different contributions to the peak of the Seebeck coefficient near the Fermi level. It suggested that the domination of each state for the Seebeck coefficient can be analyzed.
Graphene Aerogel-Enhanced DBD Reactor with Thermoelectric Energy Recovery for Superior Plasma Activated Water Production
Authors: Seetawan Chatchavit , Namhongsa Wanatchaporn , Ruamruk Surasak , Thaowankaew Somporn , Min Zhu , Chaohai Zhang , Seetawan Tosawat 
Published: December 2024

Abstract
This study investigates plasma-activated water (PAW) production enhancement using a Dielectric Barrier Discharge (DBD) reactor integrated with graphene aerogel inserts. It explores the potential for thermoelectric energy recovery. The research focuses on optimizing PAW generation by leveraging graphene aerogel’s high surface area and porosity to improve plasma-water interaction and increase the dissolution of reactive oxygen and nitrogen species (RONS). Additionally, the study examines the integration of thermoelectric materials within the reactor system to recover and utilize the thermal energy generated during plasma activation. A rotating DBD reactor design facilitates dynamic mixing and enhances contact between plasma and water. Key parameters are systematically evaluated, including rotation speed, aerogel characteristics, discharge conditions, and thermoelectric material performance. Results indicate that graphene aerogel significantly boosts PAW production efficiency while including thermoelectric materials, contributing to energy recovery and making the process more sustainable. This dual advancement in PAW technology offers potential applications in biomedical treatments, environmental remediation, and energy-efficient industrial processes.
Imprint of Lienard–Wiechert field on a one-dimensional manifold
Authors: Arutunian S. , Aginian M. , Chung M. , Ivanyan M. 
Published: December 2024

Abstract
A method is developed that determines parametric expressions of the electromagnetic field of a charged particle moving in vacuum on one-dimensional manifolds. This method does not require solving the retardation equation (the spatial distribution of the field is found on the basis of exact Lienard-Wiechert equations). The method is applied to a charged particle moving along a helical trajectory. One-dimensional manifolds are represented by straight lines in the plane orthogonal to the helix axis. Field packages with maximal amplitudes are identified and their motion with time is considered. It is shown that these packages are marked by the regions of the electric field line concentrations. It is shown that the field of a particle moving along the helix contains a plane with zero component along the axis of the helix. This plane is orthogonal to the helix axis and passes through the position of the particle at the time of observation.
New class of salts containing different amino acids - an overview
Authors: Tonoyan G.S. , Giester G. , Petrosyan A.M. 
Published: December 2024

Abstract
A new class of amino acids salts containing different amino acids has recently been discovered: the present review reports about 69 such salts of eleven distinct types. The 38 salts crystallize in noncentrosymmetric space groups displaying nonlinear optical properties, 26 of them have polar symmetry and are potential pyro- or ferroelectrics. Single crystals of all these 69 compounds were obtained and their crystal structures were determined. 47 of them contain a dimeric cation of the [A(1)+···A(2)] type, where A(1) and A(2) are different amino acids. The following 13 dimeric cations have been revealed: (Gly+···Sar), (Gly+···DMG), (Sar+···DMG), (DMG+···Sar), (Sar+···Bet), (Bet+···Sar), (DMG+···Bet), (Bet+···DMG), (L-Pro+···Sar), (β-Ala+···L-Pro), (β-Ala+···Sar), (β-Ala+···DMG) and (β-Ala+···Bet). Among representatives of this class a new type of polymorphism was discovered. Some iodides among salts containing different amino acids can be used in medicine as regulators of thyroxine synthesis in the body.
Fraunhofer diffraction by a slit into a medium with irreversibility of optical waves
Authors: Eritsyan H. , Soghomonyan A. , Lalayan A. , Margaryan A. , Soghomonyan R. 
Published: December 2024

Abstract
This study investigates Fraunhofer diffraction by a slit into a medium exhibiting both natural optical activity and magneto-optical activity induced by an external magnetic field. The features of the diffraction pattern caused by the simultaneous presence of the two specified types of optical activity, which together lead to irreversibility of waves, are revealed. It is shown, in a particular case, that the diffraction pattern is asymmetric relative to the plane of symmetry of the considered optical scheme.
Hydra: computer vision for data quality monitoring
Authors: Britton Thomas , Jeske Torri , Lawrence David , Rajput Kishansingh 
Published: December 2024

Abstract
Hydra, initially developed for Hall-D in 2019, is a system that utilizes computer vision to perform near real time data quality monitoring. Since then, it has been deployed across all experimental halls at Jefferson Lab, with the CLAS12 collaboration in Hall-B being the first outside of GlueX to fully utilize Hydra. The system comprises back end processes that manage the models, their inferences, and the data flow. The front-end components, accessible via web pages, allow detector experts and shift crews to view and interact with the system.
Population exposed to compound extreme hot & humid and wet & windy events in Africa
Authors: Tamoffo Alain T , Weber Torsten , Saleem Farhan 
Published: December 2024

Abstract
Changes in compound extreme events are a hallmark of global warming, posing significant risks to human well-being. This study investigates projected changes in compound extreme hot & humid and wet & windy events across Africa by the end of the 21st century (2069–2098). Using the multi-model ensemble mean from the regional climate projections from the coordinated regional climate downscaling experiment-coordinated output for regional evaluations project, we examined both low/high representative concentration pathway (RCP2.6/8.5) emission scenarios. We estimated population exposure to these joint events by combining climate projections with low/high shared socioeconomic pathway (SSP1/SSP3) population growth scenarios. Broadly, changes are regionally-dependent. In some subregions, we found a substantial increase in the frequency and duration of compound extreme hot & humid events, rising by approximately 100%/600% under RCP2.6/RCP8.5, associated with a rise in extremely hot univariate events. Conversely, compound extreme wet & windy events are projected to weaken, particularly under RCP8.5, with reductions up to 64%, driven in most regions, by declines in extreme wet-only events. Global warming expands historical equatorial hotspots for heat events into eastern and southern Africa, which is less severe under RCP2.6. These changes significantly increase exposed populations to these hazards, affecting up to 668 million person-events across various IPCC reference subregions, especially in West, Central, Northeast, and Southeast Africa, as well as most of West and East South Africa, and Madagascar (MDG). In subregions like the Sahara and West Africa, population growth is the primary driver of exposure to hot & humid events, while in Central, North-East, South-East, West-South, East-South and MDG, climate and interaction effects are more influential. We stress the need to enhance climate adaptation policies, especially in West, Central, Northeast, Southeast Africa and MDG, to address these risks, as they could exacerbate climate refugee migration, heat-related illnesses, food insecurity, and societal instability. We also advocate for disseminating climate services, particularly in low-income countries, to support research for sustainable development.
Toward spatio-temporal models to support national-scale forest carbon monitoring and reporting
Authors: Shannon Elliot S , Finley Andrew O , Domke Grant M , May Paul B , Andersen Hans-Erik , Gaines III George C , Banerjee Sudipto 
Published: December 2024

Abstract
National forest inventory (NFI) programs provide vital information on forest parameters’ status, trend, and change. Most NFI designs and estimation methods are tailored to estimate status over large areas but are not well suited to estimate trend and change, especially over small spatial areas and/or over short time periods (e.g. annual estimates). Fine-scale space-time indexed estimates are critical to a variety of environmental, ecological, and economic monitoring efforts. In the United States, for example, NFI data are used to estimate forest carbon status, trend, and change to support national, state, and local user group needs. Increasingly, these users seek finer spatial and temporal scale estimates to evaluate existing land use policies and management practices, and inform future activities. Here we propose a spatio-temporal Bayesian small area estimation modeling framework that delivers statistically valid estimates with complete uncertainty quantification for status, trend, and change. The framework accommodates a variety of space and time dependency structures, and we detail model configurations for different settings. The proposed framework is used to quantify forest carbon dynamics at an annual county-level across a 14 year period for the contiguous United States. Also, using an analysis of simulated data, we compare the proposed framework with traditional NFI estimators and offer computationally efficient algorithms, software, and data to reproduce results for benchmarking.
Strategy Model for Improving the Implementation of Good Agricultural Practices Towards Sustainable Muntok White Pepper in Bangka Belitung Province
Authors: Pranoto Y.S , Raya A.B , Hariadi S.S 
Published: December 2024

Abstract
Muntok White pepper (MWP) as the mainstay commodity of Indonesia’s exports in its production activities must be paid attention to aspects of high quality and food safety. Efforts can be made by increasing the implementation of GAP (Good Agricultural Practices) because GAP can produce high-quality Muntok White Pepper (MWP). It is safe to consume and produced in an environmentally friendly way, guaranteed product sustainability, competitive selling prices by considering economic, social and environmental sustainability. This article presents an analysis of the strategy model for improving Good Agricultural Practices-Muntok White Pepper. The research was conducted in Bangka Belitung Province which is the center of national pepper production. The farmer sample included 259 respondents taken using the multistage random sampling method. Survey, observation, interview, and questionnaire methods were applied to collect data. The data was examined with Covariance-based Based Structural Equation Modeling (CB-SEM). The research model is built based on an exogenous construct consisting of the role of extension workers, personal factors, and environmental factors, while the endogenous construct is an increase in the implementation of Good Agricultural Practices - Muntok White Pepper. The results of the study show that the strategy model for improving the implementation of Good Agricultural Practices - Muntok White Pepper (GAP-MWP) by increasing the capacity of the role of agricultural extension workers includes education, as well as increasing personal factors including motivation and perception. Increasing the capacity of extension workers technically includes land selection and cultivation as well as integrated cultivation management, in addition to the importance of increasing motivation and changing negative perceptions of farmers.
Fermentation of Cow Urine as Liquid Organic Fertilizer to Increase Rice Production
Authors: Polakitan August , Lintang Meivie , Tandi Olvie Grietjie , Salamba Herlina N. , Polakitan Derek , Malia Ibrahim Erik , Kindangen Jantje 
Published: December 2024

Abstract
This study aims to test cow urine as a liquid organic fertilizer to complement rice plant nutrition. The research location is in Minahasa District. Field experiments using a randomized block design. Namely, 4 treatments repeated 4 times. The rice tested was the Ciherang variety. Treatment 1 (U25A75) 1 l of cow urine mixed with 3 l of water (1:3), treatment 2 (U50A50)) One litre of cow urine mixed with one litre of water 1:1, treatment 3 (U75A25) three litres of cow urine mixed with 1 l of water 3:1. Treatment 4 (U0A100) Control without cow urine. Before being applied, cow urine was fermented for 10-14 days. The application technique for rice plants is spraying it on the leaves using a sprayer every 7 days. Observations of plant growth parameters include plant height. Observations of production parameters include panicle length, number of grains per panicle, weight of 1000 grains, and yield per hectare. The data collected were analysed statistically. The analysis showed that all treatments of cow urine liquid fertilizer affected plant height until the age of the plant was 45 days after planting. The ratio of cow urine and water 1:1 (U50A50) had a significantly higher effect than other treatments.
Evaluation of cassava wounded stem cuttings soaking materials and concentrations on cassava growth and production
Authors: Astuti A , Mulyono  , Haniifah R 
Published: December 2024

Abstract
Cassava productivity in Indonesia, however, is still at the level of 40-60% far below the Indonesian Agriculture Ministry target. To further increase the productivity, stimulation at the early period of growth may be achieved by applying PGPR, AB-mix, and Biosaka at varying concentrations. The current study was aimed at evaluating the effect of varying soaking materials and concentrations of cassava wounded stem cuttings on growth and cassava production. The study was conducted in the Field Experimental Station of Universitas Muhammadiyah Yogyakarta during dry season of 2024. The experiments were carried out by employing Completely Randomised Design, with a single factor experiment involving combination of variations of soaking materials and concentrations, as follows: PGPR 5mL/L, PGPR 6 mL/L, AB Mix 2 mL/L, AB-Mix 3 mL/L, Biosaka 3 mL/L, Biosaka 4 mL/L, and a control experiment. The study demonstrated that the cassava wounded stem cuttings soaked in PGPR resulted in the acceleration shoots growth and the soaking in AB-Mix 2 mL/L increased the number of shoots and leaves. The soaking cassava wounded stem cuttings using Biosaka at 3 mL/L, however, significantly resulted in the increase of roots and shoots dry weight, diameter of the tuber. These results suggest that soaking cassava wounded stem cutting with Biosaka at a concentration of 3mL/L effectively increased cassava production by 60.13%.