bluuebunny/crossref_metadata_2025 huggingface dataset:
The VIKOR Method in High-Risk Supply Chain Investment Decisions: Managing Uncertainty and Strategic Choices
Authors: Prabhakaran Sushil Prabhu
Published: February 2025

Introduction: Research into assessment centers has shown they effectively predict managerial success. Understanding how assessors form their
judgments is crucial for explaining their predictive validity. This study analyzes data from assessors to uncover the methods they use to derive
overall ratings, exploring both formal and informal judgment approaches.
Research significance: The importance of this study resides in its possibility to enhance the understanding of assessment centers and decisionmaking processes in various contexts. By exploring how assessors derive ratings, The study helps to increase the fairness and accuracy of evaluations.
Furthermore, it offers information on decision-making frameworks applicable across fields, including urban planning and healthcare.
Methology: Alternative: Decision Hub, Centralized Command, Strategic Control Point, Decision-Making Core, Command Center, Operational
Decision Nexus, Governance Hub.
Evaluation Preference: Improved Decision-Making speed, Enhanced Coordination, Better Data Utilization, Increased Accountability, Risk of
Bottlenecks, Limited Flexibility.
Result: The results show that Operational Decision Nexus has the highest ranking and decision hub has the lowest ranking.
Conclusion: Operational Decision Nexus has the highest value for Decision Center according to the VIKOR approach
FECAL MICROBIOTES TRANSPLANTATION TECHNOLOGIES: MEDICAL, BIOTECHNOLOGICAL AND REGULATORY ASPECTS
Authors:   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Bakalchuk M. M.
Published: February 2025

Fecal microbiota transplantation (FMT) is a treatment method based on donor's fecal solution injection into the patient's gastrointestinal tract. FMT is effectively used in the treatment of recurrent Clostridium difficile infection. There is also growing interest in the therapeutic application of the method to treat metabolic, autoimmune and other disorders that was not previously associated with intestinal microbiota. Despite the promising results of FMT use, the organizational and legal matters and that of the safety FMT application have not yet been resolved in the European and Ukrainian medical community. The purpose of this review was to summarize information on the FMT application and the regulatory aspects of its use. The analysis of the practical instructions provisions of for FMT applying in clinical practice was carried out, and the bioethical problems associated with the FMT use were investigated.
Biological effectiveness of the Bt 26 strain of Bacillus thuringiensis in fighting the root-knot nematode Meloidogyne inсognita
Authors: Saidova S. , Egamberganova A. , Khalilov I. , Eshova K. , Azimov D. , Akramova F. , Matmuratova G. , Aramova G. , Akhmadjanova K. , Zhumaniyozova D. , Rakhmanova L. , Sadikova S. , Abdurakhmanova G.
Published: February 2025

Plant-parasitic nematodes pose a great threat to v arious crops, killing them and causing damage to agriculture. The bacteria-based approach to fighting them seems particularly promising, as it also makes it possible to lower the use of chemicals and reduce the effects caused by environmental changes. The goal of this work is to study the biological effect of the bacterium Bacillus thuringiensis against nematodes from the genus Meloidogyne . Samples of cucumbers from an experimental site deliberately infected with the southern root-nematode Meloidogyne incognita were used as material for this work. The study was conducted in 2023 – 2024. Phytohelmintology and microbiology methods were used in the research. In vivo experiments and studies in greenhouses and in the field have shown that bacteria can help regulate in various ways the development of endoparasitic nematodes. In conclusion, as a result of our studies of the local bacterial strain Bt 26, which has high nematocidal activity against M . incognita , we determined the optimal schemes of application of the bioprepar a tion. Application of seed encapsulation with Bt.-26 strain bacteria further increased the efficiency of microbial agents. Seed treatment with Bt.-26 contained the lowest galling index of 0.5. Treatment with bacteria, which initiates protective mechanisms in plants, is regarded as an optimal solution, since it is no less or even more effective than the use of chemical pesticides. Moreover, bacteria have additional positive effects on plants, such as growth stimulation, which increases their productivity.
Extrativismo de madeira na região da caatinga brasileira e os riscos aos trabalhadores rurais
Authors: Fernandes Cristina da Silva , Sousa Vitória Lídia Pereira , Oliveira Francisco Eduardo Silva de , Rosemiro Francisco Rosemiro Guimarães Ximenes Neto , Santos Francisco Diogenes dos , Lourenção Luciano Garcia , Machado Maria Helena , Oliveira Eliany Nazaré , Sousa Francisco Willian Melo de
Published: February 2025

Objetivo: Descrever o processo laboral de trabalhadores rurais durante a extração de madeira e os riscos ocupacionais envolvidos. Método: Estudo qualitativo, descritivo-exploratório, realizado no município de Cariré, Ceará, com 10 trabalhadores rurais. A coleta de dados foi realizada por meio de entrevistas semiestruturadas e observação direta. A análise baseou-se no referencial teórico de Minayo. Resultados: O trabalho dos extrativistas envolve a seleção de locais para acampamento, após o arrendamento de terras; a construção de estradas para escoamento da madeira, extração, transporte e queima de resíduos. Esses trabalhadores, sem vínculo formal de emprego, enfrentam condições laborais precárias e estão expostos a diversos riscos, como radiação solar excessiva, manuseio de ferramentas cortantes, exposição à fumaça, picadas de animais peçonhentos, e esforço físico intenso, sem o uso adequado de Equipamentos de Proteção Individual. Conclusão: O estudo evidencia a necessidade urgente de políticas públicas de saúde que garantam proteção integral e universal aos trabalhadores rurais, visando a redução dos riscos ocupacionais e a melhoria das condições de trabalho.
Propuestas de intervención para la disminución de la violencia psicológica en el contexto escolar: una revisión bibliográfica
Authors: Herrera Navas Cristopher David , López Rodríguez Yanelin , Del Pino Calderón Jorge Luis
Published: February 2025

La violencia psicológica en el ámbito escolar se ha extendido como una de las principales problemáticas educativas que transversaliza horizontalmente todas las formas de violencia existentes, esto la ha posicionado como un fenómeno cultural, multicausal y de interés común. El propósito de esta investigación fue analizar las propuestas de intervención que aparecen documentadas para la disminución de la violencia psicológica en contextos educativos. Como metodología, se emplea un paradigma interpretativo de tipología documental para generar una revisión bibliográfica a través del protocolo PRISMA. Como resultados, se analizan 15 propuestas generadas para la prevención de violencia psicológica, resaltando sus objetivos, contextos, muestras, principales resultados y conclusiones. Se concluye que la mayoría de propuestas de intervención para el abordaje de la violencia psicológica en contextos educativos coinciden en la consideración de ciertos componentes específicos para su desarrollo, tales como: 1) el nivel de comprensión del problema específico; 2) la transversalización curricular de la propuesta; 3) la evaluación y monitoreo permanente; 4) la participación asertiva de la comunidad educativa; 5) la actitud de perfeccionamiento de la comunidad educativa en materia socio-emocional; 6) la cultura de intervención social de la comunidad para la búsqueda del bien común; la sostenibilidad; y 7) la sostenibilidad de la intervención a largo plazo. Por lo tanto, se podría decir que la prevención de la violencia psicológica demanda un cambio cultural, integral, continuo, permanente e integrador.
The significance of the Perron-Frobenius eigenvalue for the characterization of a measure of channel occupancy in data networks
Authors: Fernández Carina , Bavio José , Marrón Beatriz
Published: February 2025

Telecommunications is currently one of the most important technologies, utilizing various infrastructure elements to enable communication over the Internet. When an internet connection is established, traffic packets are routed from one device to another, taking different paths through routers that process each packet. These networks present multiple challenges in processing, distributing and connecting traffic. To address these challenges it is necessary, on the one hand, to have models that describe the behavior of traffic and its evolution over time, such as the Generalized Markov Fluid Model. On the other hand, it is essential to reserve part of the available resource at each node for ongoing connections. To carry out this reservation process, the Effective Bandwidth is employed. In this paper, we describe the distribution of the buffer in equilibrium for traffic sources modeled by a Generalized Markov Fluid Model, using a system of differential equations. As the main result of this paper, we prove that it is possible for this model to characterize the effective bandwidth when the most probable duration of the buffer busy period prior to overflow becomes larger and larger. Finally, we verify this result numerically from simulated traffic traces.
Castles and Landscapes: Power, Community and Fortification in Medieval England
Authors: Creighton O.H.
Published: February 2025

Castles were among the most dominant features of the medieval landscape and many remain impressive structures to the present day. This paperback edition of a book first published in hardback in 2002 is a fascinating and provocative study which looks at castles in a new light, using the theories and methods of landscape studies. For the first time castles are examined not as an isolated phenomenon, but in relation to their surrounding human as well as physical landscapes. Taking a thematic approach, the study examines a broad range of evidence – archaeological, documentary and topographical – to put castles back into the medieval landscape and assess their contribution to its evolution. Far more than simply a book about castles, this is a study of the impact of power and authority on the landscape.
Building Efficient Storage Architectures with Python
Authors:   Tech & Apps Mgmt Spec. III, Automatic Data Processing, Inc. NJ, USA, Durvasulu Mohan Babu Talluri
Published: February 2025

In the age of big data, efficient storage architectures are paramount for organizations to manage, process,
and retrieve vast amounts of information seamlessly. Python, renowned for its versatility and extensive library
ecosystem, has emerged as a pivotal tool in designing and implementing robust storage solutions. This research
explores the development of efficient storage architectures leveraging Python’s capabilities, focusing on system
architecture design, data collection and preprocessing, feature engineering, algorithm selection, and model deployment.
By integrating Python scripts with modern storage infrastructures, the study demonstrates how automation and
intelligent data handling can enhance performance, scalability, and reliability. The methodology encompasses a
comprehensive framework that includes core components such as automation engines, data interfaces, and monitoring
modules. Implementation workflows are detailed, highlighting initial setup, automated response generation, real-time
transaction verification, and continuous monitoring. Security and compliance are addressed to ensure data integrity and
adherence to regulatory standards. Evaluation metrics and continuous monitoring strategies are employed to assess
system performance and adaptability. The results indicate significant improvements in storage efficiency and
operational reliability through Python-based automation. This research contributes to the field by providing a structured
approach to building efficient storage architectures, outlining the advantages, limitations, and challenges associated
with Python-driven solutions. Future work will explore the integration of machine learning models for predictive
storage management and further optimization of automation scripts to cater to evolving data demands.
How to Respond to a Cyber Security Incident
Authors:   Vaka Consultant, HCL, Frisco, Tx, USA, Reddy Pavan
Published: February 2025

Cyber security incidents pose significant threats to organizations, potentially leading to data breaches,
financial losses, and reputational damage. Effective incident response is crucial for mitigating these impacts and
restoring normal operations. This research article explores comprehensive strategies and best practices for responding
to cyber security incidents. By reviewing existing literature, analyzing related work, and identifying research gaps, the
study aims to develop a robust framework for incident response. The methodology encompasses data collection, tool
utilization, and algorithm implementation to establish an efficient response mechanism. Results demonstrate the
framework's effectiveness in enhancing incident detection, containment, and recovery processes. The study concludes
with recommendations for improving incident response strategies and outlines future research directions.
AWS Storage: Key Concepts for Solution Architects
Authors:   Tech & Apps Mgmt Spec. III, Automatic Data Processing, Inc. NJ, USA, Durvasulu Mohan Babu Talluri
Published: February 2025

Amazon Web Services (AWS) has revolutionized the landscape of cloud storage, offering a suite of
scalable, secure, and cost-effective solutions tailored for diverse business needs. This research article delves into the
fundamental concepts of AWS Storage, specifically targeting solution architects tasked with designing and
implementing robust storage architectures. By examining key services such as Amazon S3, EBS, EFS, and Glacier, the
study highlights their unique features, use cases, and integration capabilities within the AWS ecosystem. The
methodology involves a comprehensive analysis of AWS documentation, case studies, and expert interviews to identify
best practices and architectural patterns. Additionally, machine learning techniques are employed to assess performance
metrics and optimize storage configurations. The results underscore the importance of understanding data lifecycle
management, security protocols, and cost optimization strategies in leveraging AWS Storage effectively. The
discussion addresses the advantages of AWS Storage solutions, including scalability and reliability, while also
acknowledging limitations such as potential vendor lock-in and complexity of management. Challenges faced by
solution architects, such as ensuring data security and compliance, are explored in detail. Conclusively, the paper
provides strategic recommendations for solution architects to enhance their proficiency in AWS Storage, ensuring the
delivery of resilient and efficient storage solutions that align with organizational objectives
To the 75th anniversary of Academician of the Russian Academy of Sciences Lyubov I. Kolesnikova
Authors: Dygai Alexander M. , Reshetov Igor V. , Usoltseva Natalia I.
Published: February 2025

Lyubov Ilyinichna Kolesnikova, a well-known scientist and the largest specialist in the field of pathological physiology, Honored Scientist of the Russian Federation, Academician of the Russian Academy of Sciences, celebrated her 75th birthday on December 20, 2024.
Spatial distribution and habitat preference of sarcosaprophagus Calliphoridae (Diptera) in the Brazilian Northeast, with notes on the utilization of different animal baits
Authors: ASSIS ANA BEATRIZ L. DE , BARBOSA TACIANO M. , GUIMARÃES RICARDO JOSÉ P. SOUZA E , GAMA RENATA A.
Published: February 2025

Abstract Brazil is a country with one of the greatest biodiversities in the world, in addition to the high diversity of biomes that directly influences the composition of fauna and flora. In this context, the analysis of the potential distribution of calliphorids in the Northeast can generate important information for forensic entomology and conservation biology. This study aims to identify the current and potential distribution of the main species of flies from the family Calliphoridae of forensic interest in the Northeast region of Brazil. For this purpose, field and bibliographic data were collected and analyzed. The obtained data were used to develop ecological models based on the MaxEnt model. The analyses showed that the exotic species Chrysomya albiceps (Wiedemann, 1819) and Chrysomyia megacephala (Fabricius, 1794) are the most common species in Northeast environments, presenting a wide spatial distribution. On the other hand, native taxa have a more restricted distribution, except for the species Cochliomyia macellaria (Fabricius, 1775). The variables that most influenced the models were precipitation and wind. The ecological models presented in this study demonstrate an overlap in the distribution of exotic and native species, which may pose a risk of competition and future homogenization of assemblies.
As causas e consequências da dívida latino-americana
Authors: DAVIS TOM E.
Published: February 2025

RESUMO Este artigo nos mostra que as causas do endividamento latino-americano devem ser analisadas de dois lados. De um lado, as transformações ocorridas no mercado financeiro internacional e que geraram um aumento anômalo na oferta de crédito pelo private banking internacional. Por outro lado, o liberalismo econômico que os regimes autoritários abraçaram e suas necessidades sociais e políticas de recompensar o apoiador da classe média os levaram a aumentar seu endividamento muito além de suas possibilidades de pagamento. Considerações também são feitas para explicar por que os países devedores conseguiram “reescalonar” a dívida existente individualmente e não negociar coletivamente. Os problemas e consequências de um “default” por parte dos países latino-americanos também são analisados neste artigo.
Marx e os fundamentos da dinâmica econômica capitalista
Authors: POSSAS MÁRIO LUIZ
Published: February 2025

RESUMO O objetivo do artigo é traçar as conexões essenciais entre a obra de Marx e os fundamentos da dinâmica econômica capitalista. O ponto principal é que as “leis do movimento” da economia capitalista de Marx foram consideradas eficazes ao nível do capital em geral, ao passo que uma teoria da dinâmica económica capitalista como tal deve conduzir a determinações mais concretas, que não podem surgir a menos que o nível de concorrência, ou a “pluralidade de capitais”, é plenamente tido em conta. Após uma breve introdução, a 2ª secção discute quatro diferentes noções de concorrência que podem ser encontradas em O Capital, sublinhando aquela que diz respeito às leis económicas do movimento, segundo as quais todo capital procura obter lucros excedentes através de novos métodos de produção e novos produtos, levando à produção de mais-valia relativa. Mas a concorrência ainda emerge aqui nas suas características gerais, que não são suficientes para estabelecer uma teoria dinâmica. A 3ª seção conclui este artigo levantando alguns elementos básicos necessários para desenvolver tal teoria. Após uma discussão preliminar das razões para descartar o paradigma do equilíbrio numa economia dinâmica e do papel do tempo - tanto histórico como teórico -, encerra com uma referência às formas teóricas da dinâmica: instabilidade, crise, tendência e ciclo económico, onde a ênfase é colocada nos dois últimos.
Acumulação de capital, internacionalização da economia e as PME
Authors: RATTNER HENRIQUE
Published: February 2025

RESUMO Ao discutir o crescimento econômico, atribui-se um papel importante às pequenas indústrias que gerariam emprego e distribuiriam renda à população urbana pobre. Os factos reais não confirmaram esta hipótese, embora as pequenas unidades de produção continuem a representar a maioria das empresas industriais e de serviços e a contribuir com uma grande parte do PIB, do emprego, dos salários e dos impostos, apesar de uma concentração crescente de capital e da centralização do poder econômico em grandes conglomerados. Este movimento aparentemente contraditório do capital no seu processo de acumulação e reprodução sugere que as pequenas empresas não estão condenadas a desaparecer, mas tendem a assumir novas e diferentes funções, porém, subordinadas, dependentes ou complementares aos grandes conglomerados, no processo de produção capitalista.
Gender and urban health: a Latin American structured tool for research and policy
Authors: Morais Lidia Maria de Oliveira , Borde Elis , Guevara Paula , Valdebenito Roxana , Baldovino-Chiquillo Laura , Sarmiento Olga L. , Vergara Alejandra Vives , Friche Amélia Augusta de Lima , Caiaffa Waleska Teixeira
Published: February 2025

Latin American cities have evolved via exclusionary historical processes, resulting in hasty and unplanned urbanization, insufficient infrastructure, and extreme levels of violence. These issues have well-documented health implications. In urban settings, gender may lead to unequal access to opportunities and services, however, its consideration into policies, interventions, and research remains insufficient, potentially exacerbating urban inequities. Drawing inspiration from feminist urbanism and urban health research, we propose a structured tool for Latin American cities to develop gender-sensitive urban policies, interventions, and urban health research. The study encompassed: (1) a narrative literature review of feminist urbanism frameworks and the Delphi method to select the most appropriate dimensions; (2) a thorough examination of data availability and indicators in three studies of urban transformation interventions in Brazil, Colombia, and Chile to evaluate data availability and local interest; and (3) an urban health dialogue with the relevant indicators. We identified three key dimensions: “proximity”, “autonomy”, and “representativeness”. Neighborhood was considered the most meaningful level for analyses. The indicators were organized into subdimensions, considering existing literature on their implications for gender and health. The proposed tool is comprehensive and adaptable, thus, it can be used in diverse Latin American urban contexts. It is a valuable resource for incorporating a gender-sensitive perspective into urban policymaking, interventions, and health-related research.
Dating violence perpetration and victimization among high schoolers from public and private schools in Rio de Janeiro, Brazil
Authors: Moraes Claudia Leite de , Faus Daniela Porto , Castro Márcia C. , Reichenheim Michael , Junger Washington Leite , Taquette Stella Regina
Published: February 2025

Dating violence during adolescence is a global public health issue due to its widespread occurrence and negative health consequences. Unfortunately, research addressing this topic in Latin American countries remains limited. Seeking to bridge this gap, the present study estimated the prevalence of both dating violence victimization and perpetration among high schoolers considering sociodemographic factors, exposure to other forms of violence, and school-related characteristics. A total of 539 students participated in the study selected by means of probabilistic sampling from private and public schools in Rio de Janeiro, Brazil. Dating violence was identified using the Conflict in Adolescent Dating Relationships Inventory. Victimization prevalence ranged from 16.7% (sexual) to 94.6% (emotional), whereas perpetration prevalence varied between 9.9% (sexual) and 94.6% (emotional). Boys were more physically victimized (37.2% vs. 24.5%) and perpetrated more sexual abuse (13.7% vs. 6.9%) than girls. Adolescents reporting child abuse, living in violent areas, and those who consumed alcoholic beverages more frequently had greater dating violence prevalence overall. However, some differences between male and female vulnerability characteristics merit debate. These heterogeneous profiles of victimization/perpetration between boys and girls indicate the need for specific dating violence prevention interventions.
The political economy of the uncertainty of capital flows: A historical reappraisal from Prebisch to Neo-Dependentists
Authors: Lampa Roberto , Sember Florencia
Published: February 2025

Abstract The transformation of developing economies, particularly South American, triggered by the post-2008 reversal of international capital flows and the subsequent expansion of their financial sectors has implied a resurgence in the popularity of what we might call a neo-dependentist approach, focusing on the concept of financial subordination. This approach, while convincing on the theoretical and analytical planes, has revealed some controversial implications. By emphasising the role of external constraints on developing economies, the pivotal role of financial subordination implicitly limits the space for possible reforms at regional, subregional, and national levels to mitigate the effects of the uncertainty associated with international capital flows. Drawing from the history of economic thought, we consider the numerous analogies between the financial subordination approach and Latin American Structuralism and Raul Prebisch, particularly in the field of political economy. A careful reappraisal of Prebisch’s (self-critical) last book can provide interesting insights into the current problems.
From Germany to North and South America: Carl Landauer and the strategies to deal with uncertainty in the 1930s and 1940s
Authors: Curi Luiz Felipe Bruzzi
Published: February 2025

Abstract Carl Landauer dealt with the uncertainties of the 1930s and 1940s through strategies articulating theory and policy. For him, economic planning was a strategy to overcome the uncertainties of the market economy: a planned economy would reach an optimal use of resources and avoid monopolies. In 1933, he emigrated to the United States as part of a process of transference of knowledge from Europe to North America, due to the rise of fascism. In America, he conflated the defense of planning with democracy. At this point, the great uncertainty was the transition to a postwar economy. Landauer engaged in a critical debate with Keynesianism and presented planning as a device capable of ensuring economic stability and full employment after the war. His American intellectual production eventually reached Brazil, where the industrialist Roberto Simonsen assimilated Landauer’s ideas to legitimize economic planning as an instrument to promote industrialization and overcome economic backwardness.
The downfall of certainty: the crisis of rationality and science in the writings of Henri Lefebvre, a first approach.
Authors: Melo Marcos Gustavo Pires de
Published: February 2025

Abstract This article provides an initial exploration of the writings of the French Marxist philosopher Henri Lefebvre concerning the problem of rationality and science. It begins by establishing the historical context in which these reflections emerged as well as the philosophical and social dilemmas they sought to address, notably the crisis of rationality as part of the broader crisis of European civilization in the interwar period. Lefebvre's critique of traditional philosophy, developed in the 1920s, is presented as a philosophical response to the problems of modern rationality, later superseded by a distinctly Marxist formulation rooted in the framework of dialectical materialism being developed within French Marxism. Lastly, the article explores the broader implications of Lefebvre's approach for understanding the need to critique and revitalize modern rationality through his investigations into Logic and Methodology.
Aging and post-polymerization effects on conversion degree and properties of additive splint materials
Authors: SANTIS Leandro Ruivo de , FERNANDES Lucas Silveira , VASQUES Mayra Torres , ZAMBRANA Nataly Rabelo Mina , VIANA Ítallo Emídio Lira , FORLIN Taís Scaramucci , SAAVEDRA Guilherme de Siqueira Ferreira Anzaloni , FRANCCI Carlos Eduardo
Published: February 2025

Abstract The study objective was to analyze dimensional change, flexural strength, surface hardness, wear profile, and conversion degree of different additive splint materials under various post-polymerization conditions of time and artificial aging. Two additive manufacturing systems (Cara Print 4.0, Dima Print Ortho, Kulzer; SprintRay Pro, SprintRay Splint, SprintRay), and a thermally activated resin control (Clássico) were evaluated in artificial aging (deionized water or saliva; 28 or 84 days at 37°C), with recommended or doubled post-polymerization cycles. Dimensional change (surface metrology), flexural strength (ISO 20795-1:2013), fractography (SEM), Knoop hardness, two-body wear profilometry (150,000 cycles; 3mmØ; 20N; 2.1Hz), and conversion degree (FTIR spectroscopy) were assessed. Two-way ANOVA and post-hoc Tukey tests were used for parametric data, and Kruskal-Wallis and post-hoc Dunn tests, for non-parametric data (α = 0.05). Results indicated no statistically significant differences in dimensional change or flexural strength among the materials. Recommended post-polymerization cycles resulted in lower hardness for additive resins than the thermally activated control. Doubling post-polymerization time significantly increased flexural strength and hardness of Dima Print Ortho, but decreased flexural strength of SprintRay Splint, and did not affect wear resistance. Dima Print Ortho demonstrated the highest wear resistance. Artificial aging did not affect flexural strength, surface wear, or dimensional change, but negatively impacted the hardness of all materials except Dima Print Ortho. The conversion degree was unaffected by post-polymerization time, and no significant differences were found among the materials. Overall, additive materials exhibited mechanical and dimensional properties comparable to thermally activated resin, with doubling post-polymerization time positively influencing the properties.
Analysis of the immediate effect of the high-frequency oral oscillation exercise on individuals with and without vocal symptoms
Authors: Dantas Miriã Isabela dos Santos , Gama Ana Cristina Côrtes , Nogueira Lorena Luiza Costa Rosa , Furlan Renata Maria Moreira Moraes
Published: February 2025

ABSTRACT Purpose to verify the immediate effects of high-frequency oral oscillation using the Classic Shaker®, on acoustic, perceptual-auditory and vocal self-perception measures, in adults with and without vocal complaints. Methods 50 individuals were allocated into four groups - men with vocal symptoms, men without vocal symptoms, women with vocal symptoms and women without vocal symptoms. The participants completed the Vocal Symptoms Scale, the self-assessment of vocal discomfort, and were subjected to voice recording before and after performing the tested exercise, which consisted of blowing the Shaker® - Classic model - mouthpiece, while emitting the vowel U, for three minutes. The recordings were submitted to acoustic analysis and perceptual-auditory analysis. Paired T-test and Wilcoxon test were used, significance level of 5%. Results after the exercise, there was a decrease in jitter in the groups of men with symptoms and in shimmer in men without symptoms. Women with symptoms showed an increase in fundamental frequency, harmonic-to-noise ratio, CPP, and CPPS values and a decrease in jitter; women without symptoms showed an increase in GNE. The perceptual-auditory evaluation did not indicate changes after carrying out the exercise. A reduction in vocal discomfort was observed in all groups after the exercise. Conclusion The high-frequency oral oscillation exercise using the Shaker® was able to promote improvements in acoustic parameters and a reduction in self-reported vocal discomfort in the four groups evaluated.
Movimentos sociais e políticas públicas: avanços e reveses na construção de direitos em saúde
Authors: Rosa Hevelyn , Cabral Cristiane da Silva
Published: February 2025

RESUMO Este artigo analisa os modos como distintas configurações da relação entre Estado e movimentos sociais produziram diferentes políticas públicas de saúde da mulher desde a virada do século XXI. Nas últimas quatro décadas, diversos setores da sociedade têm trabalhado na elaboração e ampliação de direitos de cidadania. Entre esses coletivos, destacam-se os movimentos feministas, que aliaram as lutas pelo direito à saúde e pela democracia, construindo práticas que afirmam a articulação com o Estado, a fim de incidir na formulação de políticas públicas baseadas em direitos humanos. Partindo de pesquisa documental de perspectiva antropológica, analisam-se os documentos e os contextos de promulgação das principais políticas públicas nacionais de saúde da mulher desde 2000. Argumenta-se que uma interlocução sistemática entre movimentos sociais e representantes do governo, por meio da participação popular na formulação de políticas públicas, pode resultar em propostas mais alinhadas às demandas coletivas no campo da saúde da mulher, ainda que tais conquistas mostrem-se sujeitas ao jogo partidário e ao conservadorismo. Essa abordagem visibiliza um processo de construção mútua entre o gênero e o Estado, que possibilita, simultaneamente, incidir no cenário político-institucional, redefinir agendas político-sociais e operar uma vigilância crítica das práticas governamentais.
Effects of styrene-acrylic emulsion on mechanical properties and hydration characteristics of JS waterproofing coatings prepared with various cement types
Authors: Han Lu , Li Xiaopeng , Wang Qin , Wang Jian , Han Shuai , Song Xiaoxian , Han Guang
Published: February 2025

The mechanical properties of polymer-cement waterproofing coatings (JS waterproof coatings) are significantly impacted by the type of cement employed. In this study, three JS waterproofing coatings were developed by integrating styrene-acrylic emulsion (SA) with Portland cement (PC), white Portland cement (WPC), and sulphoaluminate cement (CSA), respectively. The tensile properties and water absorption of these coatings were evaluated. Additionally, the effect of SA on the hydration processes and products of the various cements was investigated using calorimetry, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The results indicate that JS waterproofing coatings formulated with PC and WPC exhibited superior elongation at break, while those incorporating CSA demonstrated significantly higher tensile strength and reduced water absorption. The addition of SA was found to significantly inhibit the dissolution of C3A and C3S phases in PC and WPC, thereby prolonging the induction period of cement hydration and reducing the formation of ettringite (AFt). In contrast, CSA exhibited rapid reactivity, with ion dissolution rates surpassing the adsorption capacity of SA, resulting in extensive AFt formation within JS waterproof coatings. These AFt crystals integrated into the coating's organic matrix, forming a reticulate network that enhanced tensile strength and significantly improved waterproofing performance.
Improved thermal stability of nanostructured surface on Al 6082 alloy by (Zr+Yb) addition
Authors: Hu Wen-Ru , Meng Xiang-Quan , Zhang Lei , Sun Jian , Yang Xue , Du Xiao-Dong
Published: February 2025

Aluminum alloy 6082 (AA6082) is widely used in the production of industrial structural parts due to its light weight and good mechanical properties. However, such structural components are often accompanied by peripheral coarse grain defects and poor surface hardness and wear resistance. A nanostructured surface layer was developed on AA6082 through surface mechanical attrition treatment (SMAT) to improve the surface properties. Thermal stability and other features of nanostructured surface layer were investigated after annealing from 150°C to 350°C. The experiment results showed that the thermal stability for the surface nanostructure layer on AA6082 without containing (Zr+Yb) was at 300°C, while the composite addition of (Zr+Yb) improved the thermal stability for the surface nanostructure layer on AA6082 by 50°C and stabilized at 350°C. We found that the high thermal stability of surface nanostructure layer on AA6082 containing (Zr+Yb) was due to the pinning effect of the (Zr+Yb)-containing precipitates on the grain boundaries. The main objective of this study is to improve the surface performance of AA6082 by SMAT and to investigate a way to enhance the thermal stability of the surface nanostructure in order to qualify the material for various temperature service conditions.
Chemical route synthesis of nanostructured BaFe12O19 for microwave absorption application
Authors: Ghongade Satyashila D. , Lad Divya D. , Ambole Yash V. , Chavan Sampada V. , Shinde Shital J. , Patil Meenal D. , Bagwan Azeem M. , Raje Pradnya G. , Waikar Maqsood R. , Moholkar Annasaheb V. , Sonkawade Rajendra G.
Published: February 2025

The synthesis of M-type barium hexaferrite (BaM) has been achieved through a chemical route employing barium nitrate and ferric nitrate as initial reactants while utilising citric acid as a fuel. X-ray diffraction confirms the polycrystalline nature of BaM nanoparticles (NPs) with a hexagonal structure in the P63/mmc space group. The bending and stretching vibrations of metal–oxygen bonds are studied by Fourier transform infrared spectroscopy. Scanning electron microscopy and energy-dispersive X-ray spectroscopy were used for the morphological and compositional analyses. BaM NPs are embedded in an epoxy matrix, chosen for its excellent thermal, chemical, and physical properties, to fabricate an absorber for assessing microwave absorption (MA) performance. This study provides detailed insights into the structural, morphological, and compositional properties of BaM NPs for enhanced MA performance in the X-band region. The permittivity, permeability, and reflection loss of BaM1–BaM3 samples were analysed, revealing superior MA performance in the BaM3 nanocomposite compared with BaM1 and BaM2. Increasing the BaM NP concentration in the epoxy matrix from 10% to 30% elevates [Formula: see text] and [Formula: see text] values, boosting dielectric and magnetic losses due to enhanced interfacial and dipolar relaxation. This high magneto-dielectric loss in the BaM3 nanocomposite significantly improves MA performance.
Treatment of children with blunt spleen injury throughout 25-year period in Sevastopol and the Republic of Crimea
Authors: Ignatiev V.V. , Oleynik A.V. , Muraviev A.V. , Garapov T.A. , Dankova I.I. , Tishukov M.Yu.
Published: February 2025

Objective. This study examines methods of treatment of pediatric patients with blunt splenic injury (BSI) in medical institutions in the city of Sevastopol and the Republic of Crimea. The effectiveness of non-operative management (NOM) in patients with BSI of varying AAST injury grade was assessed and risk factors which could predict the need for operative management (OM) were identified. Material and methods. A two-center retrospective cohort study was performed, in which reviewed the medical records of children diagnosed with BSI between 1996 and 2023. A cohort of patients hospitalized since the start of the active use of NOM of BSI was identified to determine risk factors. Results. The study included 112 patients. The mean age was 9.9±3.6 years, with a predominantly male (72%) population. In 64% of cases, the injury mechanism of BSI was a fall from a height. 26% of patients were hemodynamically unstable. Among the cohort of patients hospitalized since the start of the active use of NOM of BSI, NOM was effective in 94% of patients with low or moderate AAST injury grade, and in 56% of patients with high AAST injury grade. According to the study results, the risk factors that determine the indications for OM in this cohort of patients are BSI of high AAST injury grade (OR 20.0; 95% CI 2.7—53; p<0.01), hemoperitoneum volume >500 ml according to ultrasound and/or CT (OR 15.0; 95% CI 2.3—98; p< 0.01), Hb <92.5 g/l (OR 20.0; 95% CI 1.9—219; p=0.01), hemodynamic instability (OR 5.4; 95% CI 1.4—21; p=0.02). Conclusion. NOM is an effective treatment for BSI of any AAST injury grade. The decision about OM should be based on haemodynamic instability.
Aplicaciones de la xenometabolómica para la identificación de biomarcadores de toxicidad: una revisión del tema
Authors: Betancourt Arango Juan Pablo , Patiño Ospina Alejandro , Taborda Ocampo Gonzalo , Fiscal Ladino Jhon Alexander
Published: February 2025

En el mundo de hoy se establece la importancia de identificar biomarcadores de toxicidad como una forma preventiva ante la presencia de diversos compuestos químicos contaminantes que actúan como agentes xenobióticos en diversos organismos, además de permitir la evaluación de la inocuidad alimentaria en diversas matrices por medio del desarrollo de nuevas metodologías exploratorias como la metabolómica y la xenometabolómica. De esta forma, el objetivo de esta revisión estriba en el análisis de la información reportada con respecto a la determinación de biomarcadores de toxicidad estudiados en plantas y diferentes productos alimentarios, además del análisis de las diferentes aplicaciones actuales de las ciencias ómicas para la determinación de metabolitos respuesta. Finalmente, se busca comprender la aplicación de la metabolómica y la xenometabolómica frente a la identificación de biomarcadores de toxicidad en el medio ambiente y en los alimentos, ante la presencia de agentes contaminantes actuales como plaguicidas, metales pesados, plásticos y microplásticos, que permiten ver la importancia de estas ciencias en la identificación de biomarcadores mediante el desarrollo de las ómicas.
Caracterización del comportamiento epidemiológico COVID-19 e implementación del plan nacional de contingencia 2020 en Armenia, Quindío (Colombia)
Authors: Betancur-Giraldo Jhon Jairo , Del Rio-Alarcón Cindy Natalia , Moreno-Meza Leidy Lisbeth
Published: February 2025

Introducción: El objetivo del estudio es caracterizar el comportamiento epidemiológico de la COVID-19 y la implementación del Plan Nacional de Contingencia en la ciudad de Armenia, Quindío (Colombia) en el año 2020. Materiales y métodos: Corresponde a un estudio descriptivo que aplica métodos integrativos con fuentes primarias y secundarias. Resultados: Armenia, con respecto al comportamiento epidemiológico durante la vigencia de 2020, y luego de la flexibilidad de medidas y de la adopción del aislamiento selectivo individual presenta un resultado superior en la tasa de incidencia y mortalidad al del nivel nacional y de algunas regiones cercanas, alcanzando su mayor tasa de mortalidad en el periodo epidemiológico 12 (del 1 al 28 de noviembre de 2020). Conclusiones: Con respecto a la implementación y adopción de las medidas preventivas, durante las tres fases y las líneas de acción evaluadas en el estudio, se puede decir que la administración municipal y los demás actores involucrados en la adopción y ejecución del plan –según el contexto local– dan cumplimiento a lo estipulado a nivel nacional. Las actividades y estrategias se realizaron de manera intersectorial e interinstitucional, permitiendo un adecuado manejo de la emergencia sanitaria a pesar de las dificultades administrativas y modificaciones en los planes de trabajo al comienzo de la pandemia. Sin embargo, la variación en su compartimiento epidemiológico –durante la fase de mitigación y luego de la implementación de las medidas según los lineamientos técnicos– no fueron tan positivos con respecto a los indicadores de COVID-19.
Explorando las propiedades de Cordyceps en la medicina tradicional china y occidental
Authors: Mesa Acero Sharon Daniela , Murillo Ruiz Any Valentina
Published: February 2025

El Cordyceps es un hongo que ha capturado la atención de investigadores y entusiastas de la salud debido a sus numerosos beneficios potenciales. Este hongo ha sido manejado durante siglos en la medicina tradicional en China, y se ha conocido más en los últimos años debido a las evidencias científicas que respaldan sus propiedades medicinales. Una de las características destacadas del Cordyceps es su capacidad para fortalecer el sistema inmunológico. Los compuestos bioactivos presentes en el hongo pueden ayudar a mejorar la respuesta inmune del cuerpo, lo que puede ser beneficioso para prevenir afecciones y promover el estado de salud del paciente. Además, el Cordyceps contiene propiedades antiinflamatorias, lo cual ayudaría a reducir la inflamación en el cuerpo, un factor clave en muchas enfermedades crónicas. Aparte de sus beneficios para el sistema inmunológico y respiratorio, el Cordyceps se ha asociado con otros efectos positivos para la salud, como es el caso de reportes para aumentar la vitalidad y la energía, mejorar el rendimiento deportivo y promover la salud sexual y la fertilidad tanto en hombres como en mujeres. En los últimos años, los estudios sobre el hongo Cordyceps han permitido descubrir que tiene propiedades antioxidantes y antimicrobianas, lo que indica que el hongo podría contribuir a la protección del cuerpo humano contra el daño de radicales libres y el ataque a infecciones. En este artículo se tuvo como objetivo explorar cómo han evolucionado los estudios sobre Cordyceps en el área de la medicina oriental y tradicional, y evidenciar los beneficios para el hombre. Adicionalmente, se muestra en este artículo en qué presentaciones se puede consumir medicinalmente el Cordyceps y la forma adecuada para maximizar sus beneficios.
Supporting the Inclusion and Identities of African Refugee Students in U.S. Higher Education
Authors: Habtemariam Samuel
Published: February 2025

This paper seeks to understand how African refugee students in U.S. higher education construct their social and schooling identities while they negotiate the challenges they face. Although existing literature address- es identity formation among refugee students in the post resettlement period, little is known about how African adult college refugee students maintain their identities once settled in the United States. Framed as a qualitative case study, findings assert that African refugee college students face both linguistic and academic challenges as students enrolled in higher education in the U.S.; however, the magnitude of the linguistic challenges varies based on the status of English language as a medium of instruction in the country of the refugees’ first asylum. The two challenges—linguistic and academic challenge—become intertwined once refugees pursue post-secondary opportunities in the U.S. Findings highlight the juxtaposition of maintenance of previous schooling and cultural values while learning and negotiating a new culture of post-secondary schooling in the U.S.
Chemical Quality of Irrigation Waters in Hamilton, Kearny, Finney, and Northern Gray Counties
Authors: Hathaway L.R. , Carr B.L. , Galle O.K. , Magnuson L.M. , Waugh T.C. , Dickey H.P.
Published: February 2025

One-hundred-ninety-nine pumping irrigation wells were sampled in Hamilton, Kearny, Finney, and northern Gray counties and adjoining portions of Wichita, Scott, Grant, Stanton, and Haskell counties during late July 1975. Saline water of a SO4 type is found in the western three-fourths of the Arkansas River valley and a zone north of the river in Finney County. A better quality water of a Ca-HCO3 type exists in the sandy regions south of the river. Localized variations exist in the Scott-Finney Depression area.
Compiled chemical quality data and chemical quality maps are presented for the study area.