bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis on characteristics and mechanism for rock fracture in deep rock with cracks under dynamic-static coupling effect
Authors: Ge Jinjin , Jia Yongqi , Huang Wei , Yu Meilu , Ni Suqian , Xu Ying , Yu Leilei , Gu Keke 
Published: December 2024

Abstract

In order to study the mechanical properties and fracture mechanism of deep fractured rocks under explosive dynamic loads, a Spilt Hopkinson pressure bar (SHPB) with active confining pressure loading device was used to conduct impact compression tests on rock-like specimens containing pre-existing cracks under uniaxial and triaxial stress states. The results indicate that: 1) Without confining stress, the dynamic compressive strength of crack specimen shows a pattern of decreasing first and then increasing with increasing pre-existing crack inclination angle. However, the compressive strength of crack specimens under confining pressure shows an increasing trend with the increase of pre-existing crack inclination angle, that is, it has significant confining pressure effect and strain rate effect. 2) The confining pressure constraints cause great changes in the force on specimen, which makes it difficult for the specimen to produce tensile failure along the radial direction under the axial dynamic load, and cannot preferentially produce shear failure along the axial direction. When the crack inclination Angle of rock-like specimen is 0°and 90°, the failure of specimen showed an axial tensile pattern. When the crack inclination Angle of rock-like specimen is 30°and 60°, cracks including axial tensile cracks and shear cracks are generated on it, among which axial tensile cracks are the majority. The failure of specimen is mainly caused by the combination of tension and shear. 3)Under confining pressure, the pre-existing crack angle has a significant impact on the propagation path of specimen, that is, as the angle increases, the fractal dimension D also shows an increasing trend. Moreover, there is a positive correlation between the fractal dimension of newly expanded cracks in the specimen and its impact on compression peak stress. The research results can provide references for the design of blasting parameters in deep engineering, and have important theoretical and practical significance for preventing the occurrence of disaster events caused by rock instability.
In-Utero Nano-Titanium Dioxide Exposure Results in Sexually Dimorphic Weight Gain and Cardiovascular Function in Offspring
Authors: Hunter Russell , Gluth Teresa , Meadows Ethan , Nett Riley , Nist Victoria , Bowdridge Elizabeth 
Published: December 2024

Abstract

Engineered nanomaterials (ENM) are capable of crossing the placental barrier and accumulating in fetal tissue. Specifically, the ENM nano-titanium dioxide (nano-TiO2), has been shown to accumulate in placental and fetal tissue, resulting in decreased birthweight in pups. Additionally, nano-TiO2 is an established cardiac toxicant and regulator of glucose homeostasis, and exposure in-utero may lead to serious maladaptive responses in cardiac development and overall metabolism. The current study examines weight gain and cardiac function in male and female Sprague-Dawley rats exposed to nano-TiO2 or filtered air in-utero. These animals were randomly assigned to receive a grain-based or high fat diet to examine the propensity for weight gain and cardiac response as adults. Our results show a sexually dimorphic response to weight gain with male rats gaining more weight after high fat diet following in-utero nano-TiO2 exposure, and female rats gaining less weight on the high fat diet respective of exposure. Male rats exposed to nano-TiO2 in-utero had reduced ejection fraction prior to diet when compared to air controls. Female rats subjected to in-utero nano-TiO2 exposure showed a significant decrease in cardiac output following 12 weeks of high fat diet. Development of cardiovascular impairments and ultimately cardiac dysfunction and disease following in-utero exposures highlights the need for occupational and environmental monitoring of nanoparticulate exposure.
Crafting Inclusive Parenting Programs – Considerations for Deaf Families: A qualitative study.
Authors: Ikwara Asher Emmanuel , Nabagesera Rebecca , Isiko Isaac 
Published: December 2024

Abstract

Background
The parenting of children by deaf parents has many challenges that require a barrier-breaking approach to ensure inclusivity and accessibility. Therefore, this study explored pathways for crafting inclusive parenting programs, fostering a future where every family thrives, regardless of hearing ability.
Methods
This was a qualitative study that employed in-depth interviews with 20 deaf parents and utilized thematic content analysis. This study was carried out at events organized by the Uganda National Association of the Deaf (UNAD) at Makerere College School. Deaf parents were purposively selected from attendees at events organised by the Uganda National Association of the Deaf (UNAD) during the specified celebrations.
Results
An analysis of interviews with deaf parents identified six crucial themes for inclusive parenting programs. Language education was highlighted for strengthening family bonds. Communication and relationship building emphasized equal treatment and love for deaf children. Cultural sensitivity and education were deemed essential, as visual tools and district associations were used. Tailoring content for deaf children emphasized playful and educational materials, such as sign language videos. The utilization of technology for accessible programs and the promotion of community involvement are recognized as critical components.
Conclusion
The identified themes guide inclusive parenting program development for deaf families, emphasizing sign language, communication, cultural sensitivity, tailored content, technology, and community involvement for optimal child development.
Trends in psychiatric emergency visits: insights from France's largest psychiatric emergency department
Authors: AKKAOUI Marine AMBAR , BARRUEL David , MASSON Valérie LE , GOUREVITCH Raphael , PHAM-SCOTTEZ Alexandra 
Published: December 2024

Abstract

Introduction
Psychiatric emergency departments (EDs) in France have been under pressure from several factors, exacerbated by the COVID-19 pandemic. The pandemic led to an increase in psychiatric disorders, particularly anxiety and depression, with younger people and women being most affected. The aim of this study was to provide a comprehensive description of the trends in the number of visits to the largest psychiatric emergency department in France, with a particular focus on the period preceding and following the advent of COVID-19 pandemic.
Methods
This retrospective study analyzed data from 69,764 visits to the Centre Psychiatrique d'Orientation et d'Accueil (CPOA) in Paris from 2016 to 2023. Patient data, including demographics, reasons for visit, and diagnoses, were collected and analyzed to identify trends over this period.
Results
The study observed a 28.5% increase in ED visits from 2016 to 2023. The increase was primarily driven by mood and anxiety disorders, which showed significant increases of 38.6% and 75.4%, respectively. The average age of patients decreased, reflecting a younger population increasingly affected by psychiatric problems. Interestingly, despite the increase in ED visits, hospital admissions decreased by 11.9%, with a notable decrease in involuntary commitment.
Discussion
The findings highlight a paradox where increased psychiatric ED visits are not accompanied by an increase in hospital admissions. This suggests a shift toward outpatient care due to systemic factors, including reduced hospital bed availability and challenges in accessing timely outpatient services. This study underscores the need to strengthen outpatient mental health services to effectively manage the growing demand. Further research, especially multicenter studies, is recommended to validate these findings and inform policy changes.
WITHDRAWN: Isolation and Characterization of Plant Sterols from Saponified Paprika Oleoresin
Authors: Patel Vishwa 
Published: December 2024

Abstract

Background:Phytochemicals, natural compounds in plants, offer diverse chemical structures for drug discovery. Capsicum annuum Linn. contains bioactive compounds with therapeutic potential, including carotenoids, flavonoids, and phenols.
Objectives: This research aimed to develop a cost-effective method for isolating β-sitosterol and β-citraurin from paprika oleoresin, characterizing these compounds, and establishing chemical markers. The study utilized nuclear magnetic resonance, mass spectrometry, and high-performance liquid chromatography techniques.
Materials and Methods: Paprika oleoresin was saponified, and the sap-mass was extracted with hexane. Column chromatography was conducted with ethyl acetate: hexane, yielding fractions for analysis. Thin-layer chromatography optimization and nuclear magnetic resonance techniques were used for structural elucidation.
Results: Ethyl acetate: hexane (25:75%) proved effective for isolating compounds, reducing elution time compared to acetone: hexane. β-sitosterol and β-citraurin were obtained with 15% and 22% yields, respectively. Nuclear magnetic resonance and mass spectrometry confirmed their structures.
Conclusion: The study successfully isolated β-sitosterol and β-citraurin from paprika oleoresin, showcasing an efficient methodology. The developed approach demonstrated advantages such as reduced elution time, increased compound yield, and higher purity, contributing to the field of natural product isolation and characterization. Further applications in medicine, nutrition, and industry are promising.
Effect of oxygen nonstoichiometry on electrical parameters and thermoelectric performance of electron-doped Ca0.5Sr0.45−xPb0.05LuxMnO3−δ
Authors: Konstantinova Ekaterina I. , Litvinov Vladimir A. , Koryakov Аlexander D. , Ryzhkov Maxim A. , Pereverzev Danil I. , Leonidov Ilia A. 
Published: December 2024

Abstract

The present paper is focused on the analysis of the electrical conductivity (σ), Seebeck coefficient (S), and oxygen content of perovskite-type Ca0.5Sr0.45−xPb0.05LuxMnO3−δ (x = 0.05, 0.10, 0.15 and 0.20) over the temperature (T) range from 300 K to 1220 K in air and over the wide range of oxygen partial pressure in the gas phase (Po2 = ~10−4–0.8 atm) at T = 1023–1223 K. The samples have been synthesized via the citrate-nitrate method of precursor preparation. These manganites have been demonstrated to exhibit the orthorhombic structure (space group Pbnm) at room temperature. The value of δ has been determined by thermogravimetry and coulometric titration. At δ ≈ 0 near room temperature the increase in the activation energy of n-type conductivity with growing concentrations of lutetium and Mn3+ ions has been explained by the influence of the Jahn-Teller effect. A new model have been proposed to explain the dependencies of σ and S on the oxygen content and temperature. It takes into account the removal of oxygen binding the neighbouring Mn4+O6 and Mn3+O6 octahedra in addition to the reduction reaction of Mn4+ to Mn3+. It has been definitively shown that the primary charge carriers in stoichiometric and oxygen-deficient compositions are electrons localised on Mn3+ ions in Mn3+O6 octahedra. Moreover, the values of σ and S in oxygen-deficient manganites are also influenced by charge transfer between two Mn3+ ions with sixfold and fivefold oxygen coordination, resulting in the formation of hole Mn4+O6 and electron Mn2+O5 centres. The composition with x = 0.05 exhibits the highest average values of figure-of-merit in the Ca0.5Sr0.45−xPb0.05LuxMnO3−δ series within the temperature interval from 320 K to 1000 K in air.
The Role of Self-Control in Reducing Financial Threat Perception at The Onset of Covid-19 Pandemic
Authors: Octavio Danes Quirira , Kurniawan Dediek Tri , Fauzan Slamet , Adristi Fikri Irfan 
Published: December 2024

In this study we attempt to understand how people manage their condition during uncertainty, such as the economic crisis induced by the Covid-19 pandemic. In short, we analyze the relationship between self-control, good financial behavior, and financial threat perception at the onset of the Covid-19 pandemic. A web-based survey was conducted to collect the sample (n = 589) in Indonesians people. This study found that self-control not only encourages good financial behavior but also reduces financial threat perception in the middle of uncertainty. However, good financial behavior cannot mediate the effect of self-control and financial threat perception. Our study provides evidence that at the onset of a financial crisis, self-control is needed to cope with acute stress that arises from sudden uncertainty. Having good financial behavior cannot fully alleviate financial threat perception. Self-control has a direct mechanism in coping with financial threats during COVID-19.
CARBON EMISSION DISCLOSURE: A STUDY OF MANUFACTURING COMPANIES IN INDONESIA 2018 – 2022
Authors: Maharani Diva 
Published: December 2024

Investigating the factors that affect the degree of disclosure of carbon emissions is the aim of this study. Leverage, company size, profitability, age, corporate social responsibility, and financial constraints. Multiple linear regression is the analysis model used in this investigation. A popular statistical technique for assessing the relationship between independent and dependent variables is multiple linear regression. The study's data, which was gathered from www.idx.co.id and the official websites of associated businesses, spans the years 2018–2022. Because the manufacturing sector is one of the biggest on the Indonesia Stock Exchange, it is the primary subject of this study. The Stata method was used to examine the data. The relationship between corporate social responsibility and corporate emission disclosure is positive; the more corporate social responsibility there is, the more corporate emission disclosure there is. The idea of mediation is applied in research with financial restrictions. The Sobel-Test is used to assess the relationship in the study model. The idea of mediation is applied in research with financial restrictions. The Sobel-Test is used to assess the relationship in the study model.
Sobre la libertad y los límites al poder = On freedom and limits to power
Authors: Mora Patricia Silvina 
Published: December 2024

Gayo en su afán clasificador hace en sus Instituciones la summa divisio de las personas, afirmando que todos los hombres o son libres o son esclavos. La libertad, como principal bien jurídico del hombre, desde los inicios del Derecho ha conjugado con los avances que, sobre la privacidad, ha efectuado la esfera de lo público a través de sus diversas manifestaciones de poder. Este trabajo se propone un esbozo desde los orígenes en Derecho Romano de las configuraciones de lo público y privado, para destacar los desafíos y posibles riesgos que las tecnologías disruptivas pueden presentar.

Abstract: Gaius, in his classifying desire, makes the summa divisio of people in his Institutions, stating that all men are either free or slaves. Freedom, as man's main legal asset, since the beginning of the Law has been combined with the advances that, on privacy, the public sphere has made through its various manifestations of power. This work proposes an outline from the origins in Roman Law of the configurations of public and private, to highlight the challenges and possible risks that disruptive technologies can present.
Aerial LiDAR and Imaging Based Earth Surface Digitization and Data Characteristics Comparison
Authors: Altuntas C. 
Published: December 2024

Abstract
The land topography and urban area digitization in the form of point clouds has become an indispensable method for providing many related services. Aerial point cloud measurements are made using active LiDAR or dense matching photogrammetry methods. Aerial LiDAR and dense image matching point clouds are obtained directly in the geodetic coordinate system thanks to navigation data. The geo-referencing based on ground control points require more labour and work time. All kinds of geometric and semantic information about the terrain can be extracted from the point cloud data. Therefore, it should have both location and visualization accuracy. The detection and definition accuracies of image area details depend on the scanning point density and its uniform distribution. In this study, after having been introduced the parameters of the aerial point cloud related to topographic measurement and urban area modelling, a comparison of these two source point clouds was made in areas with different land cover. The registration of a dense matching point cloud into a geospatial reference system was done with flight data and LiDAR measurements. As consequence, The LiDAR point density depends on the min angular step of the instrument scanning light, while the dense matching is relating to ground sampled distance of pixels.
Performance Enhancement in Concrete Using Nano Silica and Fly Ash
Authors: Bharat A. , Kumar S. 
Published: December 2024

Abstract
To improve the concrete performance, combining nano materials with mineral admixtures is quite effective in refining the fresh as well as hardened properties. However, the combined effects of nano and micro level materials on the concrete performance needed to be investigated for better understanding of their synergistic effects. In this paper fly ash (FA) is blended with nano silica (NS) replacing ordinary Portland cement (OPC) grade 43 to produce high performance concrete (HPC). Experiment was conducted at fixed water binder ratio with varying percentage of superplasticizer to produce workable and cohesive mix. Ternary blending with NS gave better cube strength at early stage than the binary blended mix. Even at later stage there was enhancement in the strength at 15% FA and 2% NS replacement. This could be due to seeding effects of ultra fine NS particles providing favourable hydration conditions for FA. Nano modified concrete gave lower strength at higher proportions due to the inherent problem of agglomeration. Durability of the mix was investigated by the rapid chloride penetration test (RCPT). Also, ultrasonic pulse velocity (UPV) test was conducted to observe the homogeneity of the mix. Ternary mix of 1.5% NS and 20% FA with OPC was the optimum dosage as it showed enhanced strength and durability. The images obtained from scanning electron microscope (SEM) was analysed to understand the CSH gel formation and the hydration process. These results showed that the combined usage of NS and FA has synergistic effects which could be utilized for maximum performance.
Bibliometric Analysis of Thermal Comfort and Environmental Quality: A Framework for Sustainable Construction
Authors: Bungău T. , Bungău C. C. , Bendea Codruța , Hanga-Fărcaș Ioana Francesca , Prada Marcela Florina 
Published: December 2024

Abstract
Thermal comfort and environmental quality in buildings are critical factors in achieving Sustainable Development Goals related to health, energy efficiency, and sustainable constructions. The present paper aims to establish a scientific framework for sustainable construction, focusing both on the thermal comfort and indoor/outdoor quality of the air. With the average person spending 87% of their day indoors, understanding thermal comfort, defined as the subjective experience of a satisfactory thermal environment, is essential. Two primary models, the stable model and the adaptive model, are employed to analyze thermal comfort, accounting for various factors such as ambient temperature, air circulation, and individual differences. This study uses bibliometric analysis and scientific mapping to evaluate 14,179 articles from the Web of Science database indexed in the last 4 years (2020/2024). Current findings indicate a significant interest in this topic, with China and the USA leading in research output. The study reveals a strong focus on improving thermal comfort through innovative materials, mixed-mode ventilation, and vegetation integration in urban environments. Additionally, there is a notable emphasis on the air quality’ s influence on human health. Present analysis underscores the international collaboration implications, highlighting strong links between major research countries. This comprehensive bibliometric study provides insightful observations about the field’s prospects and existing trends, highlighting the necessity of ongoing research and interdisciplinary collaboration to enhance thermal comfort and environmental quality in sustainable construction.
Estimation of Manganese Content in Potable Water by Boosting Techniques
Authors: Göçer M. , Coşkun S. B. , Yanık B. 
Published: December 2024

Abstract
In this study, boosting machine learning techniques were employed to estimate the concentration of manganese in the potable water of Yuvacık Dam and to predict the days that surpassed and fell below the threshold value of 0.05 mg/L in Turkey. We conducted both regression and classification analyses for the same issue. We also implemented sampling methods when the data distribution in the classification task became imbalanced. We obtained daily measurements for approximately seven years, from 2004 to 2011, to build the dataset, which consisted of seven columns in total. While the XGBoost algorithm forecasted the manganese content in potable water with a mean absolute error of 0.0055, the Light GBM algorithm predicted the days with elevated manganese levels with an accuracy of 0.97. The models’ high predictions allow us to adjust the frequency of frequent water sampling and lab analysis and take prompt action during water filtration processes.
Finite Element Modeling of the Non-Linear Behavior of Landslides
Authors: Idres S. , Ghouilem K. , Merakeb S. , Belhocine M. 
Published: December 2024

Abstract
Natural disasters called landslides have the potential to seriously harm people’s safety, the environment, and structures, in addition to causing considerable damage to infrastructure. It is therefore important to be able to model and predict these phenomena. This paper focus on modeling non-linear processes using a finite element model behavior and assess the stability of a slope by calculating the safety coefficient. The characterization work was carried out on a landslide at the site located in Tizi-Ouzou (Algeria). It is characterized by steepness greater than 20%. Verification of the stability of this area, while taking into account the morphology and local geological context of the site, was carried out by finite element modeling using the Mohr-Coulomb criterion and adopting the Cam-Clay model in a Castem step-by-step non-linear calculation code, making it possible to extract the stress field, displacements and deformations and also to find the sliding surface corresponding to a minimum FOS safety coefficient. The results obtained highlight the areas of the slope undergoing plastic deformation, indicative of a high state of stress. The results make it possible to identify the weak points that show that the studied profile is exposed to a risk of landslide, in particular a deep landslide affecting soil layers with a safety factor FOS <1. Preventive actions are recommended to secure the site where supporting measures could be considered.