bluuebunny/crossref_metadata_2025_split huggingface dataset:
Existence and Uniqueness of Solutions for Fractional Dynamic Equations with Impulse Effects
Authors: Georgiev Svetlin G. , Akgöl Sibel Doğru 
Published: December 2024

Abstract
The aim of the study is to establish sufficient conditions to ensure the existence and uniqueness of solutions for nonlinear Riemann-Liouville fractional dynamic equations under impulse effects. The current state of the literature reveals a visible gap in the investigation of the existence-uniqueness aspects of such equations, and this research makes a significant contribution to filling this gap. To highlight the practical implications of our results, we present an illustrative example that exemplifies the applicability of the established conditions.
Maps on self-adjoint operators preserving some relations related to commutativity
Authors: Karder Mahdi , Petek Tatjana 
Published: December 2024

Abstract
In this paper, we give the complete description of maps on self-adjoint bounded operators on Hilbert space which preserve a triadic relation involving the difference of operators and either commutativity or quasi-commutativity in both directions. We show that those maps are implemented by unitary or antiunitary equivalence and possible additive perturbation by a scalar operator.
Relative versions of first and second countability in hyperspaces
Authors: Díaz-Reyes Jesús , Tenorio Jesús F. 
Published: December 2024

Abstract
Let CL(X) be the collection of all non-empty closed subsets of X, and Δ any subfamily of CL(X). By

τ
Δ

=

τ
V
−

∨

τ
Δ
+

$\tau_\Delta = \tau_V^- \lor \tau_\Delta^+$

, we denote the hit-and-miss topology on CL(X). In 1995, Arhangel’skii focused his attention on the following general problem was formulated: given any subspace Y of X, study the subspace Y
+ of CL(X) in the Vietoris topology and the other natural topologies, where Y
+ is the subspace of CL(X) consisting of all non-empty closed subsets of X which are contained in Y. In this paper, we investigate when Y
+ is first (second) countable in (CL(X), τ), for

τ
∈
{

τ
Δ

,

τ
V
−

,

τ
Δ
+

}

$ \tau\in \{\tau_\Delta,\tau_V^- ,\tau_\Delta^+\} $

. All content of this work extend some results of the theory of hyperspaces, when Y=X or when Δ coincides with CL(X) or when is equal to the collection of all non-empty compact subsets of X.
The effect of MWCNT concentration on the electrical resistance change characteristic of glass/fiber epoxy composites under low cycle fatigue loading
Authors: Turan Fatih 
Published: December 2024

Abstract
In this study, the effect of multi-walled carbon nanotube concentration on the electrical resistance change characteristics of multi-walled carbon nanotube filled glass/epoxy composites under low-cycle fatigue loading was experimentally investigated. For this purpose, multi-walled carbon nanotube concentrations of 0.2, 0.3, and 0.4 wt.% within composites were utilized to ensure electrical conductivity. The rectangular specimens for fatigue tests were manufactured by vacuum bagging method. The fatigue tests were conducted in a load-controlled manner with an ultimate strength ratio of 0.6 and at a stress ratio of 0.1. The results showed that the alteration in electrical resistance within the composites experiences a sharp and exponential rise when the concentrations of multi-walled carbon nanotube reach 0.2 and 0.3 wt.%, whereas the rate of this increase in electrical resistance is more gradual at 0.4 wt.%. multi-walled carbon nanotube concentration. The electrical resistance change curves of multi-walled carbon nanotube filled composites at various fatigue life levels were determined for statistical analysis using the Weibull distribution method. Finally, the average stiffness loss and the average residual fatigue life were determined at the electrical resistance changes corresponding to 95, 80, and 50 % Weibull reliabilities at various fatigue life levels and various multi-walled carbon nanotube concentrations.
Crystal structure of isoxazolo[4,5-b]pyridin-3-amine, C6H5N3O
Authors: Wang Litong , Wang Jinfang , Meng Fanchao , Zheng Xiaoxin , Han Quanxiang 
Published: December 2024

Abstract
C6H5N3O, monoclinic, P21/n (no. 14), a = 5.2140(2) Å, b = 6.8527(2) Å, c = 16.3538(5) Å, β = 97.335(3)°, V = 579.54(3) Å3, Z = 4, Rgt
(F) = 0.0336, wRref
(F
2) = 0.0881, T = 293(2) K.
Effect of amphiphilic nanoparticles and non-ionic surfactants on emulsion stability
Authors: Wang Yang , Cui Zijing , Feng Youlong , Li Long , Zhang Yujie , Guo Le 
Published: December 2024

Abstract
To investigate the effect of amphiphilic nanoparticles and nonionic surfactants on the stability of emulsions, SiO2 nanoparticles were first locally surface modified with organosiloxanes of different carbon chain lengths to prepare amphiphilic nanoparticles with different hydrophobic properties, and then the effects of surfactant type and concentration, interfacial tension and its composite system with the amphiphilic nanoparticles on the stability of emulsions was investigated. The experimental results demonstrate, the OP-50 exhibits the most effective emulsification properties at a concentration of 0.1 %. However, the emulsion stability is significantly compromised. The emulsification effect of OP-50 with amphiphilic nanoparticles at a concentration of 0.1 % remained unaltered, while the emulsion stability was markedly enhanced compared to that of a single system. The modulus of expansion of OP-50 was 11.8 mN m−1, while that of OP-50 compounded with C8-10:1 was 120 mN m−1. The incorporation of modified nanoparticles with varying lengths of carbon chains was shown to effectively enhance the modulus of expansion of the oil–water interfacial interface. The results of this study are informative for the application of oil repellents in the mechanism of enhanced recovery.
MÉTODOS DE ENGENHARIA DE SOFTWARE PARA GARANTIR A ALTA PRODUTIVIDADE EM STARTUPS
Authors: Fernanda Oliveira Joice , Ribeiro Modro Nilson , Dalmolin Luiz Cláudio , Ribeiro Modro Nelcimar 
Published: December 2024

É constatado que novas empresas de software têm o desafio de utilizar processos e ferramentas, o que afeta a prática com desafios significativos relacionados à qualidade. Isso afeta significativamente a indústria de software. Facilmente os processos de software são deixados de lado, devido a fatores como demanda, experiência e domínio. A engenharia de software continua a enfrentar desafios em meio ao aumento da demanda por projetos intensivos de software. Os desafios nos projetos, incluem produtos de baixa qualidade com todas as tentativas de transformar processos com as diversas ferramentas disponíveis.
O presente artigo que se apresenta em forma de mapeamento sistemático e se mostra muito promissor. O estudo tem o objetivo de levantar uma amostra de artigos postados entre os anos de 2018 até 2023, o foco do estudo é engenharia de software para melhorar as performances em startups. No processo de levantamento desse estudo foram levantados 4132 artigos selecionados sobre o tema, embora foram selecionados 85 artigos, por se tratarem integralmente dentro dos critérios estabelecidos pela pesquisa, apontando o tema e sendo amplamente explorado por estudiosos e teóricos.
O estudo se concentrou nas ferramentas de engenharia de software como gestão e estratégias para o desenvolvimento de software. Ao contrário de outros campos de engenharia, a engenharia de software é um campo relativamente novo que é muito intensivo em conhecimento. Esse campo da indústria envolve muito design e é extremamente dependente de pessoas, o que provavelmente explica por que a indústria de software enfrenta diferentes desafios e complexidades.
Interaction between the human dental microbiome and host gingival model
Authors: Sotozono Maki , Takahashi Ryouhei , Ida Takako , Nagata Ryoko , Saito Rui , Kornsombut Niraya , Manuschai Jutharat , Takenaka Shoji , Noiri Yuichiro 
Published: December 2024

ObjectiveInteractions between the dental biofilm and host are important to study infectious oral diseases such as dental caries and periodontitis. Previous studies have reported the reaction of a host gingival model cocultured with bacteria or biofilms. However, these studies only report results of a gingival model, and a biofilm cocultured with a gingival model has never been investigated, although the microbiome of dental biofilms is associated with the maintenance of health and the onset of infectious oral diseases. Therefore, we aimed to investigate the reaction of a gingival model and experimental biofilm. An in situ dental biofilm model, which enables biofilm formation in the oral cavity, was used to prepare experimental biofilms.MethodsThe in situ biofilm was cocultured with a reconstructed human gingival (RHG) model. We performed 16S rRNA sequence analysis, metagenomic function prediction analysis, total bacterial cell counts using quantitative polymerase chain reaction and confocal laser microscopy observation in addition to gene expression and histological investigation of RHG.ResultsWe found a change in Veillonella abundance in the in situ biofilms cocultured with RHG. Metagenomic function prediction analysis revealed that the activity of certain pathways associated with amino acid production, lactic acid fermentation and the glycolysis system significantly increased in biofilms cocultured with RHG.ConclusionThe microbiome and functions of dental biofilms can be affected by host gingival tissues. Our findings will contribute to the establishment of a host–biofilm interaction model to understand the pathophysiology of oral infectious diseases.
Innovation through collaboration: Identifying opportunities to improve congenital anomalies surveillance in Canada
Authors: de Escalante Yonabeth Nava , Bedard Tanya , Cole Cora , Dang Kitty , Jeyaraman Maya , Johnston Kathryn , Miao Qun , Rickert Lauren 
Published: December 2024

Abstract
Setting
The burden of congenital anomalies is a significant public health concern. In response to the World Health Organization’s recommendations, Canada developed and strengthened congenital anomalies surveillance to build capacity for prevention and optimal health outcomes. Historically, the Public Health Agency of Canada (PHAC) exclusively used hospital discharge data for the Canadian Congenital Anomalies Surveillance System (CCASS). A primary objective of the CCASS is to report prevalence, trends, and factors associated with congenital anomalies in Canada. However, the purpose of hospital discharge data is not for congenital anomalies surveillance; therefore, enhanced local data, which have more complete case ascertainment and additional data quality measures, are necessary.

Intervention
Recognizing these significant limitations, PHAC, the provincial and territorial governments, physicians, public health practitioners, and academics collaborated on a project to enhance the CCASS with regional data and expertise. Subsequently, the Government of Canada InfoBase platform will use this enhanced dataset for national reporting.

Outcomes
We developed standardized case definitions, a data submission form, and data quality tools, and surveyed programs to describe local congenital anomalies surveillance practice, and to identify barriers and facilitators that impact congenital anomalies surveillance efforts.

Implications
This synergistic collaboration across jurisdictions, disciplines, and health care sectors is essential to support Canada’s enhanced congenital anomalies surveillance. We identified common themes on funding, operational requirements, data standardization, and legal and privacy considerations from the survey. These themes can be used to inform policy and decision-makers for sustainable congenital anomalies surveillance and to amplify the current momentum.
Ferns, Spikemosses, Clubmosses, and Quillworts of Eastern North America
Authors: Vasco Alejandra 
Published: December 2024

I have had the pleasure of knowing Dr. Emily Sessa, the author of this extraordinary field guide, for over 15 years. Our paths first crossed at a field course on Tropical Ferns and Lycophytes in Costa Rica, sponsored by the Organization for Tropical Studies. Since then, we have regularly seen each other at botanical conferences, workshops, and American Fern Society meetings, among others. When I learned that Emily was embarking on the ambitious project of writing this book, I was both amazed and thrilled. Creating a comprehensive guide covering such an extensive region—from Peninsular Florida and the outer southern coastal plains to the central United States, the northern Midwest, the Northeast, and Canada—is a big task, and Emily has accomplished it with remarkable skill and dedication.
In 2023, during the Botanical Society of America meetings in Boise, Idaho, Emily shared with us some of her field stories while working on the book. She even showed us some of the pages she was proofreading, and I was struck by the sheer amount of work and passion she had poured into this project. Now, holding the finished book in my hands, I can say that my excitement was well-founded.
Smoothing-Based Aftershock Probabilistic Seismic Hazard Assessment Using the Spatiotemporal ETAS Model
Authors: Shokrgozar-Yatimdar Elham , Yaghmaei-Sabegh Saman , Shoaeifar Parva , Chen Po 
Published: December 2024

ABSTRACT
Probabilistic seismic hazard analysis (PSHA) is generally based on computing time-invariant occurrence rates of mainshocks using the Poisson process. However, aftershock probabilistic seismic hazard analysis (APSHA) allows for assessing time-varying aftershock occurrence rates within a short-term seismic hazard mitigation framework. Our proposed methodology of APSHA develops a smoothing-based analytical formulation to capture the spatial distribution and temporal evolution of aftershock sequences using the spatiotemporal epidemic-type aftershock sequence model. This approach is tested on case studies of the 2013 Bushehr, 2021 and 2022 Hormozgan seismic events, and characterizes the aftershocks’ hierarchical structure to improve the reliability of aftershock hazard assessments. Then, the results of APSHA (aftershock ground-motion hazard at specific sites) based on smoothing are compared with conventional PSHA (pre-mainshock ground-motion hazard at specific sites). This comparative analysis highlights the importance of considering aftershock effects when assessing ground-motion hazards because PSHA does not fully account for aftershock hazard increases following major earthquakes.
The Unusual Seismic Activity from 2021 to 2024 in Eastern Austria: Insights from Seismic Sequences Relocation and Moment Tensor Inversion
Authors: Papí-Isaba María del Puy , Mattesini Maurizio , Petersen Gesa , Cesca Simone , Lenhardt Wolfgang , Buforn Elisa , Hausmann Helmut 
Published: December 2024

ABSTRACT
From 2021 to 2024, unusually strong seismic activity, including multiple sequences with five 3.8≤ML≤4.6 shocks, struck the Vienna basin and Mur-Mürz fault systems in Eastern Austria. Three earthquakes (ML 4.6, 4.5, and 3.8) occurred between March and May 2021. These earthquakes were followed by an increase in seismic activity in March 2023, with an ML 4.3 earthquake to the southwest of the 2021 events. In February 2024, an ML 4.5 earthquake occurred 10 km southwest of the ML 4.3 in 2023. We investigate activated faults relying on nonlinear relocations of the seismic sequences and probabilistic moment tensor inversion. The seismic sequences’ temporal evolution indicates a migration of seismic activity and a decrease of focal depths from northeast to southwest, suggesting a potential reactivation of the major fault systems in the region. The joint interpretation of the results shows distinct clusters along fault segments and focal mechanisms that match the region’s complex tectonic activity.
CHARACTERIZING KAOLIN-BASED ADDITIVE FOR COMBUSTION OF SUGARCANE BAGASSE-DERIVED FUEL BY THERMAL ANALYSIS
Authors: Truong Giang Nguyen , Xuan Quang Mai 
Published: December 2024

In this work, characterizing kaolin-based additive for combustion of sugarcane bagasse-derived biomass was investigated by TG-DTG and DTA. Sugarcane bagasse powder (SB) was mixed with kaolin powder (KL) at weight percentages of 0 wt.%, 2 wt.% and 4 wt.%, and then pressed into fuel pellets. combustion parameters (ignition temperature Ti, burnout temperature Tb, maximum peak temperature Tmax, ignition index Ci, burnout index Cb, comprehensive combustibility index S and activation energy Ea) for the pellets were evaluated.
EVALUATION OF THE ROLE OF REACTIVE OXYGEN SPECIES IN PMC-BASED OXIDATION SYSTEMS FOR RB21 DYE DEGRADATION
Authors: Thi Tinh Vu , Thi Bich Viet Nguyen 
Published: December 2024

This work aimed to evaluate the contribution of reactive oxygen species (ROS) in a green oxidation system based on peroxymonocarbonate (PMC) to the degradation efficiency of RB21 textile dye using ROS scavengers such as t-butanol, terephthalic acid (TA), N,N-dimethylaniline (DMA), ascorbic acid. The results showed that in reaction conditions including RB21 dye 4.63 10-2 mM (50 mg/L); HCO3– 50 mM; H2O2 100 mM; Co2+ 1.70 10-3 mM (0.1 mg/L), the RB21degradation efficiency reached 90% after 180 minutes of which the contribution percentage of CO3•– radicals was the most important, 98.2%, while •OH and other ROS hardly contributed to the degradation process of RB21 dye. Moreover, the kinetic study results on the reaction between CO3•– and its scavenger, DMA, as well as between •OH and its scavenger, TA, indicated that the concentrations of and •OH in the PMC system composed of HCO3– 50 mM, H2O2 100 mM, and Co2+ 1.70 10-3 mM were 2.35.10-13 M and 1.50.10-16 M, respectively.
DEVELOPMENT AND VALIDATION OF THE MAGNETIC IMMOBILIZATION TO DETERMINE PAPP-A IN HUMAN SERUM
Authors: Bich Ngan Nguyen , Thi Kim Lien Nguyen , Van Thao Ta , Thi Bao Bui 
Published: December 2024

The novel magnetic method used to immobilize the primary antibody in 96-well polystyrene plates was investigated to determine the pregnancy-associated plasma protein-A (PAPP-A), one of the most important protein markers in pregnancy. The optimal conditions for the immobilization are 20 μL magnetic nanoparticles (0.72 mg/mL), 2μL primary antibody (30 μg/mL) and one-step process. The total reaction time is 40 minutes 30 ºC. The calibration curve was established and the linear range shows upto 2090 mU/L. The LOQ and LOD are 7.2 and 24.0 mU/L, respectively. The reaction is non-specificity for other pregnancy hormones such as hCG and aFP even at a high level. The Passing & Bablok regression showed the linear relationship and the agreement between new and reference method, a = 1.00 (0.97 to 1.02), b = 22.07 (-73.10 to 117.24), R2 = 0.999, p<0.001. The Bland-Altman plot also showed the high concordant. The new method can be used to determine PAPP-A in the serum sample with mild conditions, simple and time-saving reaction, high sensitivity and selectivity and comparable results with the commercial method.
CRIANÇA, NATUREZA E O LUGAR DO SONHO: DESEMPAREDAMENTO DA INFÂNCIA NAS AULAS DE EDUCAÇÃO FÍSICA
Authors: Ferreira dos Santos Bruno Henrique , Freire Santos Michael , Ferreira Rodrigues Gomes Larissa 
Published: December 2024

O estudo objetiva compreender os processos crianceiros e curriculares do brincar por meio do desemparedamento da infância e dos afetos junto aos professores de Educação Física. Tem como lócus de pesquisa um CMEI no município de Viana - ES. Como referencial teórico se fez uma aposta em autores como (Brito, 2021), (Barros, 2018), (Tiriba, 2018), (Gomes e Zouain, 2021) e (Krenak, 2019). O referencial metodológico trata-se de uma pesquisa cartográfica (Kastrup, 2015). E os resultados ressaltam que os professores estão repensando suas práticas para que as aulas de Educação Física sejam um espaço de experimentação da cultura corporal do movimento humano junto aos elementos da natureza, visando o desenvolvimento cognitivo, afetivo e sensitivo das crianças.
Palavras-chave: Desemparedamento. Educação Infantil. Brincar. Afetos. Natureza.
Features of educational and enlightening online video content in Russia
Authors: Sterlikov D. A. 
Published: December 2024

INTRODUCTION. The active development of the audiovisual sector of new media and its integration into the system of educational and enlightening practices makes the issue of specifying the key features of modern online educational and enlightening video content relevant. The purpose of the study is to attempt to give a systemic description of this type of content.MATERIALS AND METHODS. The object of the study is educational and enlightening video content presented in the Russian-language sector of the Internet. The chronological framework of the study is 2022–2023. The key research methods are comparative-typological, historical-functional, and textual.RESULTS AND DISCUSSION. Despite significant overlaps in the area of implemented functions, educational and enlightening content are not identical. The former is usually offered by educational organizations in a structured form with a clearly defined goal of forming specific knowledge, skills, and abilities. The latter is content aimed at satisfying the user’s interest or curiosity in a particular area, offering information of interest to the user for the purpose of self-development and not aimed at forming specific knowledge, skills, and abilities. These types of content have significant differences in such typological features as goal setting, audience focus, genre and thematic content.CONCLUSION. The study revealed significant differences between educational and enlightening online video content, which generally consist of the fact that educational content largely copies educational genres and formats, and also gravitates toward classical video formats, while enlightening content is more focused on approaches developed in video blogging.
Romantic motifs in Chinese art: origins and peculiarities
Authors: Liu Haoxuan 
Published: December 2024

INTRODUCTION. In traditional Chinese culture, romantic motifs have always been one of the central themes in art. Therefore, the consideration of cultural and historical features of the romantic attitude development in Chinese art seems relevant for a deeper understanding of the “romanticism” phenomenon in world culture at the level of style traits and artistic techniques, regardless of nationality. The aim of the study is to show that Romantic themes in Chinese art have deep cultural and historical roots. The novelty of the study lies in the attempt to show that the unique features of Chinese Romanticism have influenced both Chinese and contemporary world art.MATERIALS AND METHODS. The study is based on historical documents and works of traditional Chinese art and culture, the methods of historical and cultural analysis are used.RESULTS AND DISCUSSION. It is revealed that romantic motifs in Chinese art are reflected not only in the praise of natural beauty but also in the desire for inner peace and spiritual freedom.CONCLUSION. A deeper understanding of the Romantic motif in Chinese art is significant for a better comprehension of the content and structure of the core values of Chinese culture.