bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALYSIS OF THERMAL PERFORMANCE IN A TWO-PHASE THERMOSYPHON LOOP BASED ON FLOW VISUALIZATION AND AN IMAGE PROCESSING TECHNIQUE
Authors: Balihar Avinash Jacob , Karmakar Arnab , Kumar Avinash , Minj Smriti , Sangso P. L. John
Published: March 2024

Thermal performance was analyzed based on flow visualization and an image processing technique in a two-phase thermosyphon loop (TPTL) with boiling water as the working fluid at low pressure. The bubble geometries, bubble frequency, and dynamic void fraction were estimated using direct image analysis combined with the power spectrum and statistical analysis. At a heating rate of 400 W and a filling ratio of 0.88, the thermal performance of the TPTL was enhanced with a thermal efficiency of 91% and effective thermal conductivity of 11,336 Wm-1 °C-1. The enhancement was due to the higher frequency cap bubble flow of 11.2 Hz obtained by the direct flow visualization. The bigger Taylor bubbles with slug flow were examined to contribute to the negative effect on the heat transfer rate due to their film boiling regimes. The detailed analysis reveals the mechanism of bubble flow interacting with thermal performance.
Modelling and protection of grotto temples based on iterative closest point and Poisson
Authors: Li Xiaoli
Published: March 2024

As a non-renewable cultural heritage, grotto temples face many value threats and the crises of rapid extinction. Due to the unique environment, diverse volume and complex geometric structure of grotto temples, cultural relic protection faces huge challenges. Digitisation has become the most important and effective preventive protection method. This study proposes a comprehensive modeling method, which uses three-dimensional (3D) laser scanning technology to obtain the point cloud data of grotto ruins, close range photogrammetry to obtain multi-angle and high-resolution two-dimensional (2D) image data, and through the fusion modelling of the laser point cloud and image dense matching point cloud, a complete geometric model of grotto is obtained. The registration method of the improved algorithm is based on Euclidean distance residual. The performance is better, with residuals mainly distributed in the range of 0.02 to 0.03 mm. In terms of texture mapping, the accuracy of model mapping is adjusted by adjusting the constraints of control points. The gray values of 50 pixels around the control points show significant gradient changes in the X direction, while the changes in the Y direction are relatively small. These methods and technologies provide practical and effective means for the protection and preservation of cultural relics in grotto temples.
As literacias mediática e digital e a participação cívica como tecnologias para dinamizar os territórios do interior de Portugal
Authors:   Escola Superior de Educação de Viseu, Alves Paulo Bruno , Oliveira Lídia ,   Campus Universitário de Santiago
Published: March 2024

As ações de promoção nos territórios do interior de Portugal - ao nível das literacias mediática e digital e da participação cívica dos seus habitantes - são oportunidades para captar diversas capacidades e dinamizar esses territórios, tornando-os desejáveis, em termos de captação de investimentos, de estruturas tecnológicas, de turismo e até de novos residentes. Esses elementos dinamizadores constituem - ou deverão constituir - fontes motivacionais para os cidadãos, de forma a desenvolver e a expandir o seu sentimento de pertença aos territórios e à valorização dos mesmos. O objetivo deste texto passa por apresentar duas dinâmicas (literacias mediática e digital e participação cívica), no quadro interpretativo dos territórios do interior. Elas têm como cenário as 21 Comunidades Intermunicipais, com muitos municípios e freguesias de baixa densidade. São ferramentas importantes, que poderão funcionar como inputs dos próprios cidadãos, de forma a estarem mais capacitados tecnologicamente para almejar melhores condições para eles e para esses territórios.
Análisis bibliométrico de la educación virtual y rendimiento académico universitario periodo 1996-2021, utilizando datos Scopus
Authors:   Universidad Autónoma Gabriel Rene Moreno, Cruz Ignacio Romero
Published: March 2024

En la presente investigación se realizó un análisis descriptivo de la producción científica de la educación virtual y el rendimiento académico universitario, la metodología utilizada es de bibliometría, se utilizó ocho indicadores para explicar el objeto de estudio. Los resultados, indican un crecimiento exponencial de artículos, los países que lideran con coautoría y producción son: España, Estados Unidos y Arabia Saudí, las instituciones de mayor producción están: Estados Unidos, España y Arabia Saudí, los autores más relevantes son: Aggarwal Rajesh, Abdel Wahab, Hussein M, y Al Abdulmonem, Waleed. Los temas de mayor interés están relacionados al aprendizaje, motivación, satisfacción del estudiante, rendimiento académico y universidad. Se concluye, que la educación virtual tiende a tener mayor interés por parte de investigadores, y que el mismo está asociado a los avances tecnológicos, lo que implica un espectro más amplio a realizar investigaciones en el área de educación mediados por la tecnología.
Administration of Customs Payments as a Priority Area of Tax Policy in Russia
Authors: Rubtsova Natalia , Sodnomova Svetlana
Published: March 2024

The active scientific interest in customs administration is due to the development of digital technologies, which is directly manifested in the emergence of new information tax and customs technologies and services, the desire to create a single digital platform for regulatory agencies, as well as the search for new approaches to effective administration in the field of foreign economic activity.
The purpose of the study was to demonstrate the role of customs administration in terms of the effective implementation of tax policy in the Russian Federation. During the study, both general logical methods (analysis of publications, comparison, generalization) and methods of empirical research were used: description, measurement, analysis of statistical data. Based on the analysis of current trends in customs administration, the authors justified that the state pays sufficient attention to the development of customs administration and allocates large amounts of funds for these purposes. Based on the analysis, the article expresses a point of view on the need to develop "updated" approaches to the development of customs administration in order to increase its efficiency. The authors come to the conclusion that the integration of information resources into a single platform will ensure the collection of customs payments, improve the efficiency of customs control, and reduce the administrative burden on conscientious participants in foreign economic activity.
Tax Benefits in the Taxation of Individuals’ Property
Authors: Kasatkina Galina
Published: March 2024

The article examines the economic content of tax benefits, their classification and application. Benefits have been established for the property tax of individuals, as well as for other taxes. Tax benefits include both full and partial tax exemption. The definition of the concept of "tax benefit" is given in Article 56 of the Tax Code of the Russian Federation. The definition states that the benefit provides certain categories of taxpayers and payers with certain advantages in comparison with other tax payers. Exemptions are attributed to tax benefits according to the Code. The exceptions allow to reduce the tax base and the amount of tax to all taxpayers. They are not an advantage for certain categories of taxpayers. In this case, the reduction of the tax base for calculating the property tax of individuals on the cadastral value of the established number of square meters of taxable objects cannot be attributed to tax benefits. It is almost impossible to assess the effectiveness of tax benefits for the property tax of individuals. These tax benefits are of social importance and are not aimed at increasing production or investment. The provision of benefits leads to budget expenditures. The article analyzes the budget expenditures for the provision of benefits for the property tax of individuals in the Irkutsk region. It is noted that the amount of the benefit depends on the cadastral value of the object, which is not entirely fair. The Russian tax legislation establishes a large number of benefits of various types. Monitoring the correctness of the application of benefits leads to additional costs for both the state and taxpayers. In the budget legislation, tax benefits are considered as budget expenditures. In this regard, it is most fair to provide benefits as subsidies to certain categories of taxpayers and approve them as budget expenditures.
Valuation of the Potential of Small and Medium-Sized Businesses for Investment Purposes
Authors: Tkach Yulia , Maksimov Mikhail
Published: March 2024

The current economy makes it relevant to invest not only in organized securities markets but also ‘directly’ in small and medium-sized businesses, as they represent quite promising objects of capital investment, and are highly likely to secure large incomes provided that certain "postulates" of investment activity are taken into account. The postulates are initially based on fundamental analysis of many factors of both the external and internal environment of the company; these factors, undoubtedly, affect both the current bottom line of the organization's activities and the prospects for further prosperity of the business entity. However, to determine these factors, in the sense of the basic "vector of movement" of the company, certain aspects of study of the organization as a business should be taken into consideration, potentially ensuring that a prospective investor can obtain considerable profits. In this regard, the article investigates the main aspects of operation of small and medium-sized businesses in the economic sphere, as well as the risks accompanying these operations. In addition, some factors having a significant impact on economic actors, both at macro and micro levels, are analyzed, which must be taken into account not only when carrying out the initial processes of "picking" investment objects, but also while owning a certain asset, in order to systematically check whether certain assets still possess investment relevance.
The Influence of Cognitive Distortions on the Individual Behavior in the Decision-Making Process in the Modern World
Authors: Vladimirova Anastasiya , Skorobogatova Yulia
Published: March 2024

In the modern world, in connection with the technological process development and the information flow improvement, the individual behavior in the economic choice implementation is largely based on the psychological action of the decisions made on it from the outside. Psychological effects limiting the individual rational behavior are correlated with economic categories (risk, rationality) in order to more accurately describe the behavior of individuals making choices in a situation with limited resources. Choice implies the making by the individual of the best among alternative decisions, in which maximum satisfaction of needs is achieved with a minimum of costs. By making decisions under risk conditions, rational individuals must adequately assess the probabilities of future events, striving to maximize utility. Meanwhile, not all people are able to assess even any significant part of the available alternatives, since a person's cognitive abilities are limited. The article discusses the cognitive distortions relationship with the individual economic choice in order to determine the impact on real economic phenomena and processes, as well as the main theoretical aspects of psychological effects (cognitive distortions). In addition, the article defines the reasons for erroneous actions of the individual, provides examples of cognitive distortions affecting the consciousness and sub-consciousness of the individual, and also presents statistical data on changes in the individual’s mental state.
Remoção de corante têxtil de solução aquosa por bioadsorvente produzido dos resíduos sólidos da mandiocaba (Manihot Esculenta Crantz): cinética e equilíbrio de adsorção.
Authors: Dias Rafael , José Guerreiro de Faria Lênio , Cruz Martelli Marlice , Do Socorro Barros Brasil Davi
Published: March 2024

Este estudo aborda a problemática das contaminações químicas provenientes de corantes têxteis em efluentes, bem como a geração excessiva de resíduos sólidos agroindustriais. A solução proposta é a produção de carvões ativados a partir dos resíduos sólidos da mandiocaba, visando remover corantes têxteis, como o azul de metileno. O estudo foca na síntese de carvão ativado a partir da polpa da mandiocaba para adsorção do corante. A pesquisa começa com a caracterização do precursor do carvão, analisando proteínas totais, umidade, óleos totais e carboidratos. Os testes de cinética e equilíbrio de adsorção são conduzidos utilizando um leito fixo, com concentração do corante a 120 mg/L e massa de carvão de 0,01 g. Os resultados da caracterização revelam percentuais de 0,51%, 83,40%, 0% e 16,10% para proteínas totais, umidade, óleos totais e carboidratos, respectivamente. A análise cinética de adsorção sugere um ajuste significativo ao modelo de difusão intrapartícula, enquanto o equilíbrio de adsorção se alinha bem com o modelo de Langmuir. Os carvões ativados produzidos a partir da polpa da mandiocaba demonstram resultados altamente satisfatórios nas condições testadas, indicando que podem ser eficazes e de baixo custo como bioadsorventes para a remoção do corante azul de metileno de soluções aquosas. Dessa forma, este estudo oferece uma solução potencialmente valiosa para a questão da contaminação por corantes têxteis e para a gestão de resíduos agroindustriais, ao mesmo tempo em que aproveita um subproduto da mandiocaba para fins benéficos e sustentáveis.
PROTOCOL for “Systemic inflammation triggers long-lasting neuroinflammation and accelerates neurodegeneration in a rat model of Parkinson’s disease overexpressing human α-synuclein” v2
Authors: not provided mariangela.massarocenere , Chiurchiù Valerio , Biagio Mercuri Nicola
Published: March 2024

Methodological collection for characterization of a dual-hit animal model to assess Parkinson's disease-like symptoms progression
Immunohistochemistry protocol optimized at iMM-JLA v1
Authors: M Biscaia Santos Ana , M Cristóvão Pinto Ana , R Pires Ana , G Antunes Joana
Published: March 2024

The immunohistochemistry (IHC) protocol is used to showcase the location of specific proteins in relation to the arquitecture of the tissue. In this method, we use a primary antibody which binds to a specific antigen in the protein of interest. This antibody has a specific host and can be ready to use or undiluted. The secondary antibody is an anti-host IgG which will bind to the primary antibody 1. It's also conjugated with an Horseradish Peroxidase (HRP). The HRP will react with the Hydrogen Peroxide in the substract of the DAB solution, oxidizing the DAB, creating a brown deposit on the location of the protein of interest. Depending on location of the protein, we can have staining in the nuclei, the cytoplasm or the cellular membrane. Possible variables are: the concentration of the antibody; type of antigen retrieval; the pH of the antigen retrieval solution (for Heat Induced Epitope Retrieval (HIER)); the time of incubation; the tissue used 2. You can use this protocol for Formalin-Fixed Paraffin-Embedded samples (FFPE) and Fixed Frozen samples (Gelatin and OCT).
Complicity in Administrative Proceedings
Authors: Gromoshina N. A.
Published: March 2024

The author of the paper, making a brief historical insight, comes to the conclusion that unification of institutions of complicity in modern civil procedural codes is predetermined by the development of both the doctrine and legislation. Explaining the main characteristics and types of procedural complicity, the author expresses an opinion on the acceptability for the Russian institution of mandatory procedural complicity of the American model that divides mandatory complicity into conditionally mandatory and absolutely mandatory. Based on judicial practice, the paper argues for the need to finalize the grounds for procedural complicity in administrative proceedings, taking into account the specifics of substantive administrative legal relations, as well as the need to expand the court’s ability to bring to court co-defendants based on the tasks of justice and judicial discretion. The author substantiates the conclusion that the first and second defendants involved in the case of challenging the decision, action (inaction) of an official, state or municipal officer under Part 2 of Article 221 of the Code of Administrative Procedure of the Russian Federation, in fact, are co-defendants. The paper emphasizes the importance of finalizing normative regulation of the institution of complicity in administrative proceedings.
Problems of Improving the Institution of Jurisdiction in Civil Cases
Authors: Samsonova M. V.
Published: March 2024

The institution of jurisdiction in civil cases has undergone significant changes over the past 20 years with numerous additions been made to it, which indicates a change in the concept of distribution of cases between courts, developed during the preparation of the Civil Procedure Code of the RSFSR in 1964. A complicated judicial system, as well as an increase in the variety of cases submitted to the courts, required new rules establishing the relevance of a particular case to the court. However, as the analysis of the changes that took place showed, the most of the changes were made to resolve current problems beyond any general concept replacing the Soviet one. In order to improve the institution of jurisdiction in civil cases, an integrated approach is needed that will allow us to elucidate the meaning of the norms of jurisdiction at the present stage of the development of civil procedure law; to develop reasonable criteria for the distribution of cases between different courts; to increase safeguards of the interests of persons involved in the case when transferring cases from one court to another; to improve the mechanism for transferring cases; to resolve the question of admissibility and boundaries of the agreement on jurisdiction; to substantiate the criteria of insignificance of cases to determine jurisdiction of Justices of the Peace; to update the grounds for alternative, exclusive jurisdiction.
Protection of a Bona Fide Purchaser and Invalidity of a Transaction: In Search of Stability in Civil Legal Relations
Authors: Malbin D. A.
Published: March 2024

The paper examines the relationship between the institutions of protection of a bona fide purchaser and the invalidity of a transaction. The institution of protection of a bona fide purchaser, establishing the conditions under which the owner cannot reclaim their property, embodies the idea of finding a balance between the interests of the owner and the person who acquired the property in good faith and for compensation, and extends the corresponding idea also to other institutions of civil law. The institution of protection of a bona fide purchaser went beyond the boundaries of the institution of vindication action, acting as a measure of a fair resolution of a dispute, and acquired an inter-institutional character, influencing, in particular, the institution of invalidity of a transaction. Challenging a property transaction by the owner is one of the ways to protect the rights of the owner. However, the use of this method should only apply to exceptional situations due to the extraordinary nature of restitution; in any case, its application should not lead to a violation of the rights and interests of persons who are not parties to the transaction. To ensure the stability of rights to property, it is necessary that a voidable transaction declared invalid does not entail legal consequences from the moment it is recognized as such by the court, and not from the moment it is completed. It happens since, despite the restoration of rights by the owner through compensatory restitution, the retroactive nature of the invalidity of the transaction will affect the rights purchasers of property. This can be achieved by changing the legislative provisions on the invalidity of a voidable transaction and the perception of the classical pandect doctrine about the moment from which a voidable transaction declared invalid is considered invalid.
International Legal Aspects of Protection of Women from Violence within the Organization of American States Framework
Authors: Sheremet N. A.
Published: March 2024

The paper is devoted to the protection of women from violence and discrimination within the framework of the activities of the bodies of the Organization of American States (OAS). The Special Mechanisms for the Protection of Women’s Rights of the OAS form the Inter-American system for the protection of women’s rights, while only the Inter-American Court of Human Rights (hereinafter referred to as the Court) has jurisdiction to make decisions binding on states. An analysis of the judicial precedents of the Inter-American Court of Human Rights allows us to conclude that violence against women in the Latin American and Caribbean region is classified as follows: violence against women committed by public servants; violence against women committed by private individuals; violence against women in the context of armed conflict; violence against indigenous women. The paper provides examples of cases in which the Court recognized the responsibility of states for non-compliance with international legal norms enshrined in the acts of the OAS, which resulted in a violation of women’s rights to a dignified life, free from violence and discrimination. Despite the imperfection of the OAS control mechanisms and the general politicization of this intergovernmental organization, its activities to protect women’s rights are unique and deserve in-depth study.
The role of immune checkpoint inhibitors in the development and treatment of infectious processes
Authors: Mustafina Dilya A. , Bagautdinova Aisylu N. , Zinatullina Milyausha M. , Gorbunov NIkita A. , Zainetdinova Elvina T. , Bukharmetova Diana I. , Leonov Daniil Yu. , Pirmagomedova Aibike G. , Chernyshova Anna E. , Markhanos Maria P. , Abgaryan Anna G. , Arustamyan Arina S. , Chavro Konstantin S. , Mirzojonova Farzonakhon
Published: March 2024

The incidence and prevalence of oncological diseases, which are the second most frequent cause of death, is steadily increasing among the population of the Russian Federation. The advances in translational medicine, including immunotherapy, have revolutionized the cancer treatment strategies. A particular breakthrough has been achieved in two areas of immunotherapy that have modernized the cancer treatment: chimeric T-cell receptors and antibodies known as immune checkpoint inhibitors, which block cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), programmed cell death protein-1 (PD-1) and ligand programmed cell death receptor (PD-L1). Immune checkpoint inhibitors enhance the immune response of the tumor and can cause adverse effects as a result of hyperactivation of T cells. In turn, immunosuppressive drugs, which are often prescribed to mitigate the side effects associated with immune checkpoint inhibitors, are a risk factor for the development of infectious processes. The purpose of this review is to analyze the possible relationships between immune checkpoint inhibitors and the risk of infection, as well as to discuss the possible benefits of immune checkpoint inhibitors as a treatment for various types of infections, including viral, parasitic and fungal infections, as well as sepsis. Although immune checkpoint inhibitors have demonstrated the ability to significantly increase the life expectancy of patients with advanced cancer, they often lead to adverse events, which often require a treatment with immunosuppressive drugs, including corticosteroids, anti-TNF and other biological agents. The overall effect of immune checkpoint inhibitors on human infections remains poorly understood. Further research is needed to understand the basic mechanisms of the immunological effects of immune checkpoint inhibitors on various types of infections, since in some cases such effects may be beneficial.
Aprendizagem de Geometria Esférica Por Meio do Geogebra
Authors: Jesus Josenilton Santos de , Assis Elias Santiago de
Published: March 2024

Este artigo tem como objetivo identificar as contribuições do software GeoGebra no processo de aprendizagem da Geometria Esférica, um tipo de geometria não euclidiana. Neste sentido, foi realizada uma pesquisa de campo, de natureza qualitativa, envolvendo um grupo de estudantes de um curso de licenciatura em matemática de uma universidade pública do estado da Bahia. As técnicas de coleta de dados consistiram na na realização de entrevistas semiestruturadas e na aplicação de uma sequência de atividades contendo construções geométricas que foram realizadas pelos participantes no GeoGebra. Os resultados obtidos apontaram que construções realizadas no software favorecem a introdução de conceitos da Geometria Esférica, seja na criação ou refutação de conjecturas, seja na validação de resultados.
Palavras-chave: Geometria Esférica. GeoGebra, Aprendizagem de Geometria.
Abstract This article aims to identify the contributions of GeoGebra software in the process of learning Spherical Geometry, a type of non-Euclidean geometry. In this sense, a qualitative field research was carried out, involving a group of students from an undergraduate course in mathematics at a public university in the state of Bahia. The techniques of data collection consisted of applying a sequence of activities involving geometric constructions in the GeoGebra and conducting semi-structured interviews. The results showed that, through these constructions, it was possible to introduce GE to the participants. It was possible to identify the Spherical Geometry contents properly understood by these actors and the contributions of the software in this process.Idem resumo.
Keywords: Spherical Geometry. Geogebra. Geometry Learning.
Mortalidad intrahospitalaria de pacientes con COVID-19 complicados con neumonías bacterianas en asistencia respiratoria mecánica en Cuidados Intensivos de Adultos en un Hospital del Paraguay
Authors: Fontclara Lorena , Caballero Ricardo , Fretes Federico , Rolon Acosta Pablo Daniel , Pederzani Marcelo , Bianco Hugo , Figueredo Belinda , Aguilar Gloria , McFarland Willi , Rios-González Carlos Miguel
Published: March 2024

Introducción: los pacientes con COVID-19 ingresan en mayor proporción a asistencia respiratoria mecánica, aumentando: el riesgo de neumonía asociada a ventilador (NAV) las tasas de mortalidad, los días de permanencia en las unidades de terapia intensiva (UCI) y los costos sanitarios. Objetivo: determinar la Mortalidad intrahospitalaria de pacientes con COVID-19 complicados con neumonías bacterianas en asistencia respiratoria mecánica en Cuidados Intensivos de Adultos en un Hospital del Paraguay durante los años 2020 a 2021. Metodología: estudio analítico de tipo cohorte retrospectiva. Se registraron variables demográficas, comorbilidades, puntajes en scores de gravedad como el APACHE II al ingreso, la cifra más baja de oxigenación durante la internación expresado por la PaO2 / FIO2, días de ventilación, colocación en decúbito prono, traqueotomía, medidas terapéuticas farmacológicas y no farmacológicas, días de internación, así como las complicaciones y la mortalidad. Resultados: fueron incluidos 214 pacientes, 135 ingresaron a asistencia respiratoria mecánica (ARM) de los cuales 58 (42,9 %) desarrollaron NAV, con edad mediana de 52 años (40-60). Los microorganismos de NAV fueron cocos Gram negativos en 98,3 %, incluyendo Acinetobacter baumanii en 46,5 %, Klebsiella pneumoniae en 22,8 %, Pseudomona aeruginosa en 15,5 % y 5,2 % Stenotrophomona maltofilia. La mortalidad intrahospitalaria fue del 44,8 %. Los menores de 50 años tienen una sobrevida mayor que los mayores (34 días vs 22 días, con p de 0,026). Conclusión: la mortalidad intrahospitalaria fue del 44,8 %. La edad fue un factor de riesgo independiente para la mortalidad en pacientes con NAV, por lo que los profesionales de la salud deben estar atentos a la posibilidad de NAV en pacientes que requieren asistencia respiratoria mecánica, especialmente en pacientes mayores de 50 años.
Causas precipitantes de crisis hiperglicémicas agudas en pacientes internados en el Centro Médico Nacional - Hospital Nacional
Authors: Taboada Torres Verónica , Torres de Taboada Estela , Ayala Saucedo Américo Ramón
Published: March 2024

Introducción: las crisis hiperglicémicas agudas son las emergencias endocrinológicas más frecuentes en la práctica clínica y junto a la hipoglucemia se las describe como las complicaciones metabólicas agudas graves del paciente diabético. Objetivo: identificar las causas precipitantes de crisis hiperglicémicas agudas en pacientes internados en el Centro Médico - Hospital Nacional. Metodología: estudio observacional, descriptivo, de corte transversal de pacientes internados en el Centro Médico Hospital Nacional, durante el periodo de mayo 2021 a octubre del 2023. Los datos fueron obtenidos con la revisión de las fichas clínicas. Resultados: de los 100 pacientes evaluados, la crisis hiperglicémica aguda más frecuente fue la Cetoacidosis diabética (CAD) 53 %, seguida del Estado hiperosmolar hiperglicémico (EHH) 25 % y el estado mixto 22 %. Los desencadenantes más frecuentes fueron el abandono del tratamiento, debut de la enfermedad e infecciones. La mortalidad global fue del 12 %. Conclusión: la causa más frecuente de descompensación fueron el abandono del tratamiento, la diabetes de novo y procesos infecciosos.
Asymmetric Sovereign Risk: Implications for Climate Change Preparation
Authors: Gomez-Gonzalez Jose E. , Uribe Jorge M. , Valencia Oscar
Published: March 2024

Climate change adaptation efforts are heavily dependent on a countrys fiscal capacity and the associated costs of undertaking adaptation policies. The current accumulation of high debt levels in emerging and low-income developing countries, which are disproportionately affected by climate change, raises significant concerns. This study shows that sovereign risk, and hence funding costs for governments, exhibits significantly asymmetric reactions to its determinants across the conditional distribution of credit spreads. This aspect, previously overlooked in the literature, has relevant policy implications. Countries with elevated risk levels are disproportionately vulnerable to climate change compared to their lower-risk counterparts, especially in the short term. Notably, investing in climate change preparedness proves effective in mitigating vulnerability to climate change, in terms of sovereign risk, particularly for countries with low spreads and long-term debt (advanced economies), where readiness and vulnerability tend to counterbalance each other. However, for countries with high spreads and short-term debt, additional measures are essential as climate change readiness alone is insufficient to offset vulnerability effects in this case. Results also demonstrate that the actual occurrence of natural disasters is less influential than vulnerability to climate change in determining spreads.
Avaliação Formativa na Preceptoria da Residência Multiprofissional em Atenção Básica/Saúde da Família
Authors: Rodrigues Silva Islandia Maria
Published: March 2024

Objetivos: Estimular as práticas avaliativas formativas para os preceptores do Programa da Residência Multiprofissional, da Universidade Federal do Piauí, Campus Parnaíba-PI; implantar instrumentos de monitoramento/avaliação no Programa local; e relatar a vivência do uso do Arco de Maguerez utilizado para nortear o processo. Descrição da experiência: Relato de experiência sobre uma intervenção realizada nos anos 2022 e 2023, mediante atuação na preceptoria em um Programa de Residência Multiprofissional da cidade Parnaíba, Piauí. O trabalho utilizou a metodologia do Arco de Maguerez, percorrendo cinco etapas: Observação da Realidade, Pontos-chave, Teorização, Hipóteses de Solução e Aplicação à Realidade. A aplicação do Arco possibilitou observar situações inquietantes no contexto do ensino e dos processos avaliativos do Programa local, bem como teorizar sobre eles. Assim, levantaram-se hipóteses de soluções exequíveis, envolvendo preceptores e Coordenação do Programa na região. Foram realizadas ações para melhoria dos processos de ensino aos residentes, focando na avaliação formativa. Também foram construídos, validados e implantados instrumentos de monitoramento. Conclusões: Este estudo teve como ponto de partida a realidade local, transformando-a. O Arco fora uma potente ferramenta problematizadora, cuja execução levou à dissolução da situação-problema. Através da implantação de novos processos de avaliação, bem como dos instrumentos de monitoramento, este estudo trouxe benefícios ao ensino da preceptoria no Programa de Residência Multiprofissional da região.  
 
Palavras-chave: Atenção Primária à Saúde; Educação em Saúde; Educação Profissional em Saúde Pública; Preceptoria.
Electroreduction of Cu (II) and Se (IV) ions on Vitreous Carbon Electrode
Authors: Urazov K.A. , Dergacheva M.B.
Published: March 2024

The electroreduction of copper (II) and selenium (IV) ions on vitreous carbon electrode from sulfate electrolyte has been studied. The studies have shown that during the concurrent reduction copper is first reduced within 0.15-0.05 V range of potentials. In this range of potentials the cementation reaction to form selenium compounds with copper is possible. Qualitative characteristics of Cu2Se compound have been obtained at −0.3 V potential. The composition has been confirmed by XPA and electron-probe analysis.
Removal of Lignin from Pulp Waste Water's Black Liquor via By-Pass Cement Dust
Authors: Mohamed S.E. , Khalifa M.G. , Sayed S.A. , Kamel A.M. , Shalabi M.E.H.
Published: March 2024

The potential use of inexpensive and available by-pass cement dust as an inorganic sorbent for the removal of organic matter (lignin) from black liquor of pulp wastewater by adsorption methodology was investigated using the batch technique. The cement dust is found to remove lignin efficiently from black liquor (the untreated cement dust (70.47%), the thermally treated one at 1000 °C (78.63%), and chemically treated dust (80.62%). The factors affecting the uptake percentage such as time, dose, pH and temperature were investigated to assess the optimum conditions for lignin removal. X-ray patterns were studied to reveal the relationship between the main constituents of each cement dust phase (untreated, thermally and chemically treated) and lignin uptake. By applying Langmuir and Frendlich adsorption isotherms it was found that the adsorption process of lignin from black liquor on by-pass cement dust achieves Frendlich model, which suggests that adsorption is not restricted to one specific layer of sites but involves multi-layers. Also, stripping of lignin by using different strippers (organic, mineral acids, bases and salts) was investigated. The results obtained show that the organic strippers give high stripping percentage for cyclohexane (90.10%) because lignin is a non-polar compound that dissolves in non-polar solvents. In the case of acids, bases and salts the best results were obtained with much diluted solutions (0.001 mol/L). Stripping of lignin from by-pass cement dust is considered as a way of its recycling for different applications.
Pengelolaan Budi daya Rumput Laut dengan Pendekatan Sosial-Ekonomi dan Ekologi di Pulau Pari
Authors: Neksidin Neksidin , Triyono Triyono , Murtini Sri
Published: March 2024

Seaweed plays an essential role in the people's economy in Pari Island because its cultivation has been the main livelihood for a long time. Currently, seaweed cultivation activities are no longer found, possibly due to tourism activities that directly degrade the cultivation activities. The purpose of this study is to evaluate the status of sustainability and determine the strategy of cultivation management in 5 aspects: ecological, social, economic, institutional, and infrastructure. Data were collected from primary and secondary sources related to socio-ecology in Pari Island. The assessment of the level of sustainability in each dimension was carried out using multidimensional scaling analysis, and a fairly sustainable average suitability value was obtained, namely the infrastructure (73.37), institutional (71.24), ecological (62.48), and economics (62.16). Meanwhile, the dimension with a very suitable sustainability value is the social dimension, with a value of 76.33, meaning that it is very suitable. Overall, the sustainability of seaweed cultivation, if viewed from several dimensions, shows the level of suitability of cultivation, both in terms of infrastructure, institutions, ecology, and economics. However, several dimensions, such as economic and ecological dimensions, must still be considered and continue to be encouraged so that sustainability can be achieved in all dimensions.

 

Keywords: cultivation, management, Pari Island, seaweed, socio-ecology
Peningkatan Keterampilan Praktik Pertanian yang Baik Petani Sawit Swadaya di Kabupaten Sambas
Authors: Lestari Herades Difa , Nurliza Nurliza , Oktoriana Shenny
Published: March 2024

Good oil palm cultivation contributes to the progress of the national economy by earning foreign exchange and income, creating jobs, and increasing welfare. However, independent palm oil farming has low productivity and quality due to limited knowledge and skills of GAP (Good Agriculture Practices). The research aims to formulate improvements in GAP skills, including technical skills, human skills, and conceptual skills, using skills theory and the concept of sustainability. The research method was descriptive-quantitative with Multidimensional Scaling using the Rap-Palm Oil program on 100 respondents in Sambas Regency, one of the centers of independent oil palm smallholders in West Kalimantan. The results showed that conceptual skills through extension activities are prioritized in improving GAP skills. Therefore, counseling methods through demonstration plots, comparative studies, and field schools can be an effort to improve GAP skills for sustainable management of oil palm farming.

 

Keywords: good agriculture practices, multidimensional scaling, palm oil, skills
Variasi Spasial Kepadatan Cacing Kacang di Pantai Toronipa Sulawesi Tenggara
Authors: Bahtiar Bahtiar , Purnama Muhammad Fajar , Trisnawati Ria , Anjarsari Ela , Mahmud Wa Ode Defina
Published: March 2024

The density of peanut worms is concentrated in the subtidal zone and is closely related to the substrate where they live. This research aims to determine spatial variations in peanut worm density. This research was carried out at Toronipa Beach, Southeast Sulawesi from June 2020 to February 2021. Peanut worms were collected using a hand scoop to a depth of ±10 cm in a 10x10 m2 quadrat transect at each station. Data were analyzed using standard formulas and tested using Mann-Whitney and linear regression. The results showed that the highest density of peanut worms was found at station II with a mean value of 12±104 ind/10m2 which was significantly different from stations I and III with densities of 9±52 ind/10m2 and 7±124 ind/10m2 respectively. Five types of seagrass were identified, namely Cymodocea rotundata, Enhalus acoroides, Halodule uninervis, Halophila minor, and Thalassia hemprichii. The number of seagrass species found at stations I, II, and III were 1, 2, and 5, respectively. Peanut worm density was positively correlated with seagrass density with a coefficient of determination of 86.45%. Water quality tends to be the same at all stations, except that organic matter is higher than at stations I and II. The dominant fine sand fraction was found at stations I and III, while very coarse sand was dominantly found at station II. The density of peanut worms on Toronipa Beach is determined by a combination of seagrass density, high levels of organic matter, and the dominant texture of the coarse sand substrate.

 

Keywords: peanut worm, spatial density, Sulawesi, water quality
Coupled rotators approach to the dynamics of interacting magnetic layers
Authors:   Lomonosov Moscow State University, Esser Bernd , Rzhevskii Vladimir ,   Lomonosov Moscow State University
Published: March 2024

The dynamical properties of two anisotropic rotators modelling magnetic layers coupled by bilinear and biquadratic interactions terms are considered. The easy plane case is considered in detail and it is shown that the presence of the biquadratic coupling produces а sequence of bifurcations in the rotational phase spaces. In a first bifurcation a new ground state with rotators located in the easy plane and including а finite angle is generated. Hyperbolic points appear by increasing the biquadratic coupling in а second bifurcation.These hyperbolic points correspond to а nonparallel rotator configuration with rotators splitted off from the easy plane and symmetrically displaced along the transversal direction. The corresponding energy is located between the energies of the ground state and the parallel rotator configuration. Phase space portraits displaying how the stationary states are embedded in the rotational flow are shown.
On the partial synchronization
Authors:   Lomonosov Moscow State University, Landa Polina
Published: March 2024

It shown that, in the case that the system’s variables can be separated into fast and slow ones, synchronization of only slow variables is possible whereas fast variables remain nonsynchronized. In particular, the phase shift for oscillations of two coupled self-oscillatory systems may be such a slow variable. Only in this case the notion of phase synchronization is physically meaningful.
Chaos in autooscillating medium due to spatial inhomogeneity
Authors:   Saratov State University, Anishchenko Vadim , Akopov Artem ,   Saratov State University, Vadivasova Tatjana ,   Saratov State University, Okrokvertskhov Georgiy ,   Saratov State University, Astakhov Vladimir ,   Yuri Gagarin State Technical University of Saratov
Published: March 2024

In the present paper we show that inhomogeneity of a self-sustained oscillating medium can be responsible for the apperance of a chaotic behavior. We compute the maximal Lyapunov exponent by using different calculation methods. It is established that for a fixed spatial point the autocorrelation function of the real amplitude A (t) decays exponentially with the rate that is one order less than the maximal Lyapunov exponent and is defined by the effective phase diffusion coefficient of the chaotic process А(t).
Quantum Arnold diffusion in rippled channel at the presence of alternating electric field
Authors:   Lobachevsky State University of Nizhny Novgorod, Demikhovskii Valerii , Malyshev Aleksandr ,   Lobachevsky State University of Nizhny Novgorod
Published: March 2024

We study quantum Arnold diffusion for the particle. moving in the rippled channel at the presence of periodic external electric field. The evolution operator for arbitrary number of field periods and diffusion rate was calculated for different ripple amplitude and electric field intensity. Two new effects which limit quantum Arnold diffusion have been observed - the diffusion suppression due to dynamical localization and diffusion stop in the case when the number of quantum states corresponding to the classical near separatrix chaotic region has the order of unity. For any model parameters the quantum diffusion coefficient prove to be smaller then classical one.
Experimental research of complex dynamics of on-line multycavity klystron oscillator with delay
Authors:   Saratov State University, Dmitriev Boris , Zharkov Yurij ,   Saratov State University, Levin Yurij ,   Saratov State University
Published: March 2024

Complex dynamics of the on-line resonant microwave oscillator on a basis of multycavity klystron with delayed feedback is investigated. It is shown, that with the help of an external harmonic signal the control is probable of the klystron oscillations character. Depending on an operating mode of the autonomous generator by selection of frequency and power of an external harmonic signal the modes of dynamic chaos can be received at one-frequency autonomous oscillation and, on the contrary, one-frequency oscillation modes can be received at chaotic autonomous oscillation.
Influence of noise оn synchronization of auto-oscillations in electron-wave system of interacting backward waves
Authors:   Saratov State University, Popov Pavel
Published: March 2024

The influence of noise with different amplitude upon the auto-oscillations in active distributed electron-wave system with cubic phase nonlinearity is considered. Characteristics of synchronous oscillations and physical processes, attended the establishment of synchronous oscillations in the electron-wave system with backward wave and distributed white noise, are analyzed.
Some approaches for chaotic synchronization analysis in coupled dynamical systems
Authors:   Saratov State University, Koronovskii Aleksei , Moskalenko Olga ,   Saratov State University, Popov Pavel ,   Saratov State University, Hramov Aleksandr ,   Immanuel Kant Baltic Federal University
Published: March 2024

In this paper synchronization in coupled chaotic oscillators is investigated. New approaches proposed to the detection of synchronous behavior of oscillators are applied for the research of chaotic synchronization both in systems with a small number of freedom degrees as in spatially extended self-oscillated systems.
Dynamical chaos in three-dimensional dissipative system with D_2-symmetry group
Authors:   Brigham Young University, Nikiforov Anton , Ryabov Denis ,   Southern Federal University, Chechin Georgij ,   Southern Federal University
Published: March 2024

Earlier, we found all three-dimensional dissipative systems with quadratic nonlinearities which are invariant with respect to any of 32 point symmetry groups of crystallographic symmetry and which can demonstrate chaotic behavior for appropriate values оf their pertinent parameters. Among these systems, there is one with е D_2-symmetry group. This system seems to be more simple and more elegant than those by Lorenz and Rossler which also belong to the above mentioned class of dissipative systems. In the present paper, we investigate regular and chaotic dynamics оf the Dy-symmetry system emphasizing the usefulness of the general theory of the nonlinear dynamical systems with discrete symmetries.
Reconstruction with hidden variables: modified Bock’s approach
Authors:   Saratov State University, Bezruchko Boris , Smirnov Dmitrij ,   Saratov Branch of Kotel`nikov Institute of Radiophysics and Electronics of Russian Academy of Sciences, Sysoev Ilya ,   Saratov State University
Published: March 2024

The task of model parameter estimation from experimental time series under the assumption that some variables cannot be measured or their series are very noisy is considered. Based on proposed quantitative criteria two algorithms — original Bock’s approach and its modification that allows discontinuity of model trajectory are compared. The modified method is shown to be significantly more efficient for long series. Also with the modified approach the worse starting guesses for parameters to be estimated are acceptable.
Role of Other in Coping with Traumatic Stress Consequanes
Authors:   Saratov State University, Ryaguzova E. V.
Published: March 2024

The paper affirms that contemporary society’s realia predict a necessity to expand the consultive dialogue space with people who have experienced a traumatic stress to a polylogue space incorporating within itself communications and interactions with many people. It is made evident that a polylogical room is represented by means of such axes as “I myself as Other”, “I — psychologist consultant”, “I as other — intimate and significant Others”, “Other as I” and “Other as Enemy”. It is alleged that the key figure in this space is a traumatic experience subject, when a consultive psychologist performs a part of a specific curator-moderator capable of tuning and reformatting dimensions of this space and harmonizing it.