bluuebunny/crossref_metadata_2025 huggingface dataset:
Deep Reinforcement Learning-Based Coordinated Beamforming for mmWave Massive MIMO Vehicular Networks
Authors: Tarafder Pulok , Choi Wooyeol
Published: March 2023

As a critical enabler for beyond fifth-generation (B5G) technology, millimeter wave (mmWave) beamforming for mmWave has been studied for many years. Multi-input multi-output (MIMO) system, which is the baseline for beamforming operation, rely heavily on multiple antennas to stream data in mmWave wireless communication systems. High-speed mmWave applications face challenges such as blockage and latency overhead. In addition, the efficiency of the mobile systems is severely impacted by the high training overhead required to discover the best beamforming vectors in large antenna array mmWave systems. In order to mitigate the stated challenges, in this paper, we propose a novel deep reinforcement learning (DRL) based coordinated beamforming scheme where multiple base stations serve one mobile station (MS) jointly. The constructed solution then uses a proposed DRL model and predicts the suboptimal beamforming vectors at the base stations (BSs) out of possible beamforming codebook candidates. This solution enables a complete system that facilitates highly mobile mmWave applications with dependable coverage, minimal training overhead, and low latency. Numerical results demonstrate that our proposed algorithm remarkably increases the achievable sum rate capacity for the highly mobile mmWave massive MIMO scenario while ensuring low training and latency overhead.
Near-Ultrasonic Transfer Function and SNR of Differential MEMS Microphones Suitable for Photoacoustics
Authors: Falkhofen Judith , Wolff Marcus
Published: March 2023

Can ordinary Micro-Electro-Mechanical-Systems (MEMS) microphones be used for near-ultrasonic applications? Manufacturers often provide little information about the signal-to-noise ratio (SNR) in the ultrasound (US) range and, if they do, the data are often determined in a manufacturer-specific manner and are generally not comparable. Here, four different air-based microphones from three different manufacturers are compared with respect to their transfer functions and noise floor. The deconvolution of an exponential sweep and a traditional calculation of the SNR are used. The equipment and methods used are specified, which makes it easy to repeat or expand the investigation. The SNR of MEMS microphones in the near US range is mainly affected by resonance effects. These can be matched for applications with low-level signals and background noise such that the highest possible SNR can be achieved. Two MEMS microphones from Knowles performed best for the frequency range from 20 to 70 kHz; above 70 kHz, an Infineon model delivered the best performance.
Comparison of Chemical and Electrochemical Approaches to Abacavir Oxidative Stability Testing
Authors: Pražáková Lucie , Fischer Jan , Taylor Andrew , Kubíčková Anna
Published: March 2023

A novel electrochemical approach using two different electrode materials, platinum and boron-doped diamond (BDD), was employed to study the oxidative stability of the drug abacavir. Abacavir samples were subjected to oxidation and subsequently analysed using chromatography with mass detection. The type and amount of degradation products were evaluated, and results were compared with traditional chemical oxidation using 3% hydrogen peroxide. The effect of pH on the rate of degradation and the formation of degradation products were also investigated. In general, both approaches led to the same two degradation products, identified using mass spectrometry, and characterised by 319.20 and m/z 247.19. Similar results were obtained on a large-surface platinum electrode at a potential of +1.15 V and a BDD disc electrode at +4.0 V. Degradation of 20% of abacavir, the rate required for pharmaceutical stability studies, took only a few minutes compared to hours required for oxidation with hydrogen peroxide. Measurements further showed that electrochemical oxidation in ammonium acetate on both types of electrodes is strongly pHdependent. The fastest oxidation was achieved at pH 9. The pH also affects the composition of the products, which are formed in different proportions depending on the pH of the electrolyte.
Women’s Political Citizenship in Tunisia: The May 2018 Municipal Elections and the Gender Gap
Authors: Abdellatif Soumaya
Published: March 2023

The 2018 municipal elections in Tunisia were the first to be held after the 2011 Arab Spring revolution. A new 2017 law required gender parity on electoral lists, even for positions at the top of those lists. However, women were wary of being thrust into the political fray, and many felt they were being tokenized. What is the possibility of a new generation of female politicians emerging in such a context? To uncover the factors and motivations behind the transition from non-participation to participation, I interviewed six women candidates of different political parties and conducted a focus group with eight Tunisian women who professed to be “not interested in politics”. Compulsory gender parity might foster women’s political participation in quantitative terms, but qualitatively, especially with the tokenizing male practice of nominating women candidates and expecting their “docile compliance,” this policy effectively maintains and reinforces gendered stereotypes about political competence. My findings show that women move back and forth across the spectrum from “high participation” to “politically disengaged”. Furthermore, their relationship to political participation is best described as a cyclical process marked by punctual commitments and which can be hindered by internal and external factors or periods of hibernation.
The Use of Domain-Specific Languages for Visual Analytics: A Systematic Literature Review
Authors: Khakpour Alireza , Colomo-Palacios Ricardo , Martini Antonio , Sánchez-Gordón Mary
Published: March 2023

Visual Analytics (VA) is a multidisciplinary field that requires various skills including but not limited to data analytics, visualizations, and the corresponding domain knowledge. Recently, many studies proposed creating and using Domain-Specific Languages (DSLs) for VA in order to abstract complexities and assist designers in developing better VAs for different data domains. However, development methods and types of DSLs vary for different applications and objectives. In this study, we conducted a systematic literature review to overview DSL methods and their intended applications for VA systems. Moreover, the review outlines the benefits and limitations of each of these methods. The aim is to provide decision support for both the research and development communities to choose the most compatible approach for their application. We think the communication of this research delivers a broad figure of previous relevant research and assists with the transfer and adaptation of the results to other domains.
“A Quiet Giant in the Fight for Equity”—Hamidah Hussain
Authors: Khan Aamir , Samad Lubna , Khowaja Saira , Chandir Subhash
Published: March 2023

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Knowledge, Attitudes and Practices toward Dengue Fever, Vector Control, and Vaccine Acceptance Among the General Population in Countries from Latin America and Asia Pacific: A Cross-Sectional Study (GEMKAP)
Authors: Shafie Asrul Akmal , Moreira Edson Duarte , Di Pasquale Alberta , Demuth Dirk , Yin Joanne Yoong Su
Published: March 2023

Dengue represents a major public health concern. With effective vaccines in development, it is important to identify motivational factors to maximize dengue vaccine uptake. A cross-sectional, quantitative, electronic survey was administered to a nationally representative adult population (n = 3800) in Argentina, Brazil, Colombia, Mexico, Indonesia, Malaysia, and Singapore. Willingness to vaccinate against dengue, and Knowledge, Attitudes, and Practices (KAP) toward dengue, vector control, prevention, and vaccination were determined. The Capability, Opportunity, Motivation for Behavior change (COM-B) framework was used to identify factors correlated with dengue vaccine(s) uptake. KAP scores (standardized, 0–100% scale) resulted in a low global score for Knowledge (48%) and Practice (44%), and a moderate score for Attitude (66%); scores were comparable across countries. Of all respondents, 53% had a high willingness (Score: 8–10/10) to vaccinate against dengue, which was higher (59%) in Latin America (Argentina, Brazil, Colombia, Mexico) than in Asia Pacific (40%) (Indonesia, Malaysia, Singapore). Key factors significantly (p < 0.05) associated with increased willingness to vaccinate included accessibility to the public (subsidies and incentives) and trust in the healthcare system and government. A common approach to dengue prevention across endemic countries––with some country-specific customization, including education, vaccination, and vector control (multi-pronged)––may reduce dengue burden and improve outcomes.
Encephalitis following COVID-19 Vaccination: A Systematic Review
Authors: Abdelhady Mariam , Husain Muhammad Ashraf , Hawas Yousef , Elazb Mahmoud Abdelsalam , Mansour Lena Said , Mohamed Mohamed , Abdelwahab Maya Magdy , Aljabali Ahmed , Negida Ahmed
Published: March 2023

Background: Since the advent of global COVID-19 vaccination, several studies reported cases of encephalitis with its various subtypes following COVID-19 vaccinations. In this regard, we conducted a systematic review to investigate and characterize the clinical settings of these reported cases to aid in physician awareness and proper care provision. Methods: We systematically searched PubMed, Web of Science, and Scopus and manually searched Google Scholar. Studies published until October 2022 were included. Demographic data, clinical features, vaccine data, treatment lines, and outcomes were extracted. Results: A total of 65 patients from 52 studies were included. The mean age of patients was 46.82 ± 19.25 years, 36 cases (55.4%) were males. AstraZeneca was the most-reported vaccine associated with encephalitis (38.5%) followed by Pfizer (33.8%), Moderna (16.9%), and others. Moat encephalitis cases occurred after the first dose of vaccination in 41/65 (66.1%). The mean time between vaccination and symptom onset was 9.97 ± 7.16 days. Corticosteroids (86.2 %) and immunosuppressants (81.5 %) were the most used lines of treatment. The majority of affected individuals experienced a full recovery. Conclusion: Our study summarizes the current evidence of reported post-vaccination encephalitis, regarding clinical presentation, symptoms onset, management, outcomes, and comorbid conditions; however, it fails to either acknowledge the incidence of occurrence or establish a causal relationship between various COVID-19 vaccines and encephalitis.
Lumpy Skin Disease—An Emerging Cattle Disease in Europe and Asia
Authors: Whittle Leah , Chapman Rosamund , Williamson Anna-Lise
Published: March 2023

Lumpy skin disease virus (LSDV) is a member of the Capripoxvirus genus, mainly infecting cattle and buffalo, which until relatively recently was only endemic in parts of Africa and then spread to the Middle East and lately Europe and Asia. Lumpy skin disease (LSD) is a notifiable disease with a serious impact on the beef industry as it causes mortality of up to 10% and has impacts on milk and meat production, as well as fertility. The close serological relationship between LSDV, goat poxvirus (GTPV) and sheep poxvirus (SPPV) has led to live attenuated GTPV and SPPV vaccines being used to protect against LSD in some countries. There is evidence that the SPPV vaccine does not protect from LSD as well as the GTPV and LSDV vaccines. One of the LSD vaccines used in Eastern Europe was found to be a combination of different Capripoxviruses, and a series of recombination events in the manufacturing process resulted in cattle being vaccinated with a range of recombinant LSDVs resulting in virulent LSDV which spread throughout Asia. It is likely that LSD will become endemic throughout Asia as it will be very challenging to control the spread of the virus without widespread vaccination.
The Use of Visualizations to Improve Bayesian Reasoning: A Literature Review
Authors: Cui Lucy , Lo Stephanie , Liu Zili
Published: March 2023

Decisions are often made under uncertainty. The most that one can do is use prior knowledge (e.g., base rates, prior probabilities, etc.) and make the most probable choice given the information we have. Unfortunately, most people struggle with Bayesian reasoning. Poor performance within Bayesian reasoning problems has led researchers to investigate ways to improve Bayesian reasoning. Many have found success in using natural frequencies instead of probabilities to frame problems. Beyond the quantitative format, there is growing literature on the use of visualizations or visual representations to improve Bayesian reasoning, which will be the focus of this review. In this review, we discuss studies that have found visualizations to be effective for improving Bayesian reasoning in a lab or classroom setting and discuss the considerations for using visualizations, paying special attention to individual differences. In addition, we will review the factors that influence Bayesian reasoning, such as natural frequencies vs. probabilities, problem format, individual differences, and interactivity. We also provide general and specific suggestions for future research.
Intraretinal Microvascular Abnormalities and Venous Beading Have Different Genetic Profiles in Caucasian Patients with Non-Proliferative Diabetic Retinopathy
Authors: Pearce Elizabeth , Sivaprasad Sobha , Broadgate Suzanne , Kiire Christine , Downes Susan M. , Halford Stephanie , Chong Victor
Published: March 2023

Diabetic Retinopathy (DR) is a leading cause of preventable visual impairment in the working age population. Despite the increasing prevalence of DR, there remain gaps in our understanding of its pathophysiology. This is a prospective case-control study comparing the genetic profiles of patients with no DR vs. non-proliferative DR (NPDR) focusing on intraretinal microvascular abnormalities (IRMA) and venous beading (VB) in Caucasians. A total of 596 participants were recruited to the study; 199 with moderate/severe NPDR and 397 with diabetes for at least 5 years without DR. Sixty-four patients were excluded due to technical issues. In total, 532 were analysed; 181 and 351 were in the NPDR group and no DR group, respectively. Those with severe IRMA and VB had distinctly different genetic profiles from each other and from the no DR group, which further supports the theory that these two features of DR might have different etiologies. This also suggests that IRMA and VB are independent risk factors for the development of PDR and may have different pathophysiologies. If these findings are confirmed in larger studies, this could pave the way for personalised treatment options for those more at risk of developing different features of NPDR.
Influence of a complex feed additive on increasing the productivity of broiler chickens
Authors:   Federal State Budgetary Scientifi c Institution “All-Russian Research Veterinary Institute of Pathology, Pharmacology and Therapy”, Russia, Voronezh, Ivanova N. N. , Kotarev V. I. ,   Federal State Budgetary Scientifi c Institution “All-Russian Research Veterinary Institute of Pathology, Pharmacology and Therapy”, Russia, Voronezh
Published: March 2023

The purpose of the research was to study the eff ect of the complex feed additive “Zaslon 2+” as part of the basic diet on the growth rates of broiler chickens of the cross Ross 308, livability, productive traits and economic indicators. The scientifi c novelty of the research was to substantiate the possibility of increasing the productivity and livability of broiler chickens when using the complex feed additive “Zaslon 2+” in the diet. Comprehensive studies have been conducted to increase meat productivity through the use of a sorption feed additive with phyto- and probiotic properties “Zaslon 2+” with the basic diet. The research was carried out on broiler chickens of the cross Ross 308 under the conditions of the peasant farm “Krasnoe Podvorye” in the Shebekinsky area in the Belgorod region. During the experiment, the basic diet was used in the control group of broiler chickens. For the poultry of the experimental group during the 38-day study period the complex feed additive “Zaslon 2+” (0,5 kg/t of compound feed) was used to the basic diet. The infl uence of the studied feed additive in the diet of broiler chickens on the indicators of meat productivity, livability, and economic effi ciency of production was substantiated. The dynamics of live weight of poultry, growth intensity, uniformity, livability, morphological and biochemical parameters of chicken blood were studied. A comparative analysis of the meat traits of broilers was carried out, the chemical composition of the muscles and liver of poultry was determined, the eff ectiveness of the use of the complex feed additive “Zaslon 2+” in the diets of broiler chickens of the cross Ross 308 was determined. It was recommended, in order to increase productivity, uniformity, livability, activation of metabolic processes, improvement of the meat qualities of broiler chickens of the cross Ross 308, to reduce expenditures of feed per 1 kg of products, to introduce into the diet the complex feed additive “Zaslon 2+” in the amount of 0,5 kg/t of compound feed during the entire growing period.
Engagement académico y laboral docente: Una revisión bibliográfica
Authors: Peralta Rojas José , Palacios Garay Jessica , Tamayo Huamán Pedro Javier , Rodríguez Taboada Máximo Abel , Olivares Rodríguez Pablo Celestino
Published: March 2023

Durante los últimos años, numerosos estudios muestran relaciones entre las demandas y recursos laborales y como estas han ayudado a comprender, explicar y predecir el bienestar de los colaboradores. El presente artículo tiene como objetivo determinar la importancia del engagement laboral y académico como un constructo en la contribución del estado mental de los colaboradores para el buen desempeño dentro de la institución. A partir de un enfoque cualitativo, se empleó el diseño basado en revisión sistemática orientado a documentos nacionales y globales. Se hizo uso de base de datos como: Scopus, Science Direct, Web of Science, Scielo y se empleó el análisis documental. En los resultados se evidencia que el engagement mantiene relación directa con la calidad de la enseñanza, el aprendizaje activo y la implicancia del alumnado en su instrucción educativa. Respecto a lo laboral, el engagement brinda amor propio, felicidad, inmersión hacia el desarrollo de las labores. Se llega a la conclusión que el engagement brinda a los involucrados de mecanismos que hacen frente a las adversidades encontradas en su centro laboral, concretando los objetivos propuestos por el mismo, señalando la importancia que deben de dar las instituciones y empresas en la atención a este constructo para evitar su deterioro.
Las plataformas e-learning en el aprendizaje del inglés
Authors: Asto Luna Evelyn Lourdes , Menacho Vargas Isabel , Chávez Espinoza Patricia Emperatriz , Orielle Taber De la Cruz Yessikha , Jáuregui Eléspuru Jeanina del Carmen
Published: March 2023

El conocimiento del inglés permite a los estudiantes acceder a mejores fuentes de investigación en el mundo, mejores bases de datos, libros y otros distintos recursos académicos y formativos; por tal motivo es determinante analizar el nivel de aprendizaje de este en los estudiantes a través de la forma actual de aprendizaje, las plataformas e-learning. El objetivo de la investigación fue demostrar que el uso de las plataformas e-learning para la mejora en el aprendizaje del idioma inglés en estudiantes de 5to año de secundaria de la IEA España (Lima 2019). La metodología presento un enfoque cuantitativo, método hipotético-deductivo, diseño pre experimental, se trabajó sobre una muestra de 19 estudiantes, en base a una población de 350; para la sistematización de la información se utilizó el programa SPSS 26 y la prueba T de student. El grupo de estudiantes alcanzó 18 % en logros destacados y 82 % en logro; resultados publicados en el informe técnico pedagógico de la IE. En conclusión, las plataformas e-learning contribuyen significativamente en el aprendizaje del idioma inglés en ingresantes a una universidad privada.
Estrategias de comprensión lectora y resolución de problemas matemáticos en estudiantes de primaria
Authors: Cristobal Terrones Doris , Flores Ccanto Florencio , Supo Condori Felipe , Cerrillo Quispe Sucet Alexsandra
Published: March 2023

El estudio coloca en la palestra la relevancia que tiene la comprensión de lectura para el desarrollo de las habilidades matemáticas, por lo que el objetivo general del estudio fue determinar la relación entre las estrategias de comprensión lectora y la resolución de problemas matemáticos en estudiantes de primaria de una escuela pública de Lima. El estudio tiene un enfoque de investigación cuantitativo de tipo básico. El diseño de investigación fue no experimental con una muestra censal de 90 estudiantes. Se utilizó como técnica la encuesta y los instrumentos utilizados fueron los planteados por Bastiand, dónde se aplicaron autoexámenes y técnicas cuantitativas para la recolección de la información de los estudiantes. Se tuvo como resultado que la comprensión lectora tiene una relación significativa en la resolución de problemas matemáticos por lo que se concluye que la mejora en las estrategias de compresión lectora inferencial y literal tendrían como consecuencia el incremento en el nivel de resolución de problemas matemáticos.
Retroalimentación formativa en el desempeño docente
Authors: Burga Vargas Víctor Raúl , Ortega Cabrejos Mónica Ysabel , Hernández Fernández Bertila
Published: March 2023

La retroalimentación formativa es un proceso por el cual se comparten inquietudes y sugerencias que permitan potenciar la reflexión acerca del desempeño del estudiante; la investigación tuvo como objetivo analizar la retroalimentación formativa y el desempeño docente. Para ello se examinaron los aspectos hasta ahora abordados como parte del proceso de aprendizaje; en ese sentido se observó la carencia de ésta como elemento pedagógico fundamental por parte del docente. Se realizó una búsqueda bibliográfica en diversas bases de datos especialmente de Scielo y Scopus, aplicando los descriptores: “Retroalimentación formativa” y “desempeño docente”. La información evidenció la deficiencia en el uso del feedback en los estudiantes y la motivación del pensamiento crítico de los mismos. Llegando a la conclusión que los docentes requieren utilizarla para brindar diversos comentarios, contra preguntas y apreciaciones a los estudiantes, dirigidas a definir cómo realizar el producto encomendado.
Fortalecimiento de la formación de los estudiantes de Educación Básica como aprendices de investigador
Authors: Guerra-Reyes Frank , Naranjo-Toro Miguel , Basantes-Andrade Andrea , Guerra-Dávila Eric
Published: March 2023

Preparar a los docentes como investigadores en su labor formativa constituye una alternativa para mejorar su desempeño. Por ello, se buscó comprender los significados atribuidos a la investigación por parte de los estudiantes de Educación Básica, integrados como aprendices de investigador. Se empleó: grupos de discusión y entrevistas semiestructuradas. Entre los instrumentos se utilizaron: batería de proposiciones detonadoras y matrices de análisis de categorías. Para la presentación de los resultados y su posterior discusión, se usaron nubes de palabras, tablas de resumen y redes semánticas diseñadas con el apoyo del programa ATLAS.ti. Se concluye que la formación investigativa de los futuros docentes constituye un nuevo escenario de intervención teórico-metodológica que se debe abordar desde la formación universitaria. Con ello se devuelve a la docencia su estatus de profesión vital para el mejoramiento de las condiciones socioculturales y para el desarrollo integral de los docentes, educandos y la comunidad de interacción.
A pós pandemia no universo acadêmico: uma reflexão sobre o ensino odontológico
Authors: Gomes Thayná Rodrigues , Ferreira Alícia Moreno , Ferreira Caroline da Conceição Souza , Cruz Danilo Dalvino Gusmão , Feitosa Maria Áurea Lira , De Carvalho Andrea Lúcia Almeida
Published: March 2023

Introdução: O cenário pandêmico resultante do surgimento do vírus Sars-Cov-2, gerou uma onda de instabilidade global, levando à adoção de medidas para controlar o intenso ciclo de contaminação da doença. O isolamento social foi extremamente preconizado, provocando um ajuste dos indivíduos aos novos moldes de convivência. Com o ensino presencial suspenso, as escolas e instituições de ensino superior se viram em um panorama desafiador, devido à necessidade de planejar novas alternativas para a educação, principalmente em cursos como o de Odontologia, que além de conteúdos teóricos, a prática laboratorial e clínica são fatores fundamentais para aquisição de uma formação de qualidade. Objetivo: Pretende-se refletir sobre as repercussões e novas perspectivas de ensino na Odontologia, após a pandemia da covid-19. Metodologia: Foi realizada uma revisão de literatura com busca de estudos datados entre 2020 e 2022 nas bases de dados: Pubmed, Cochrane, Lilacs e Scielo. Resultados e Discussão: O ensino remoto por meio de plataformas digitais revelou-se uma grande ferramenta para promover o ensino da Odontologia. Em países desenvolvidos, tecnologias vêm sendo empregadas com o intuito de aperfeiçoar a educação a distância diante da nova realidade instaurada pela pandemia. Parte dos acadêmicos ainda enfrentam as dificuldades de acesso à internet, o que pode comprometer o seu desempenho educacional. No cenário de atividades práticas, conceitos e medidas de Biossegurança foram ainda mais reforçados nos cursos de Odontologia, devido ao inevitável contato aluno-paciente durante o atendimento. Considerações finais: Ao se adequar ao complexo contexto da pandemia, o processo educacional na área da Odontologia sofreu uma série de mudanças que conduzem a uma nova perspectiva de ensino.
Sífilis Gestacional: perfil clínico e epidemiológico em um município do interior de Rondônia de 2011 a 2021
Authors: Cruz Jessica Reco , Lima Ana Beatriz Mauescki , Oliveira Eduardo Lima , Vasconcelos Emilly Soares , Machado Letícia Stefhanee Zulian , Toro Rafaela Gomes , Da Silva Thainara Yasmin Pereira , Witcel Khatlyn Rayeele Evencio da Silva
Published: March 2023

A sífilis é uma infecção sistêmica causada por uma bactéria, Treponema pallidum, de evolução crônica e curável, exclusiva da raça humana, sendo sua principal forma de transmissão a sexual, ou transmitida de mãe para filho durante a gestação. Este estudo objetivou descrever o perfil epidemiológico e clínico das gestantes diagnosticadas com sífilis gestacional em um município do interior de Rondônia entre os anos de 2011 a 2021, verificando a faixa etária de maior acometimento, as condições socioeconômicas das gestantes infectadas, a idade gestacional das que apresentam diagnóstico positivo para sífilis. Trata-se de estudo quantitativo, contendo dados coletados no período de 23 de junho a 17 de setembro de 2022, obtidos do Sistema de Informação de Agravos de Notificação (SINAN). O estudo identificou 171 gestantes com diagnóstico positivo para sífilis no período de 2011 a 2021. O presente trabalho foi aprovado pelo Comitê de Ética e Pesquisa da Faculdade de Cacoal – CEP – FACIMED, sob o parecer de nº 5.469.938. Os resultados apontam maior incidência entre mulheres de 21 a 31 anos (52,65%), cuja idade gestacional para diagnóstico correspondem ao 1° trimestre (48,54%). O estudo permitiu conhecer o perfil epidemiológico da sífilis gestacional em um município do interior de Rondônia no período de 2011-2021, constatando um aumento expressivo dos casos, que pode ser considerado como um problema de saúde pública no Brasil, sendo um dos principais fatores para a continuidade e agravamento deste problema o desconhecimento acerca da doença, transmissão e tratamento, além da baixa qualidade do pré-natal.
Pet nas escolas: a experiência do pet geografia - UFC no diálogo com o ensino básico
Authors: De Oliveira Douglas Ribeiro , Medeiros Fernando Lopes , Do Nascimento Juliana Sousa , Cavalcante Tiago Vieira
Published: March 2023

Este trabalho objetiva apresentar a atividade desenvolvida pelo PET Geografia da UFC, “PET nas escolas”, com a atuação dos bolsistas do programa em conjunto com professores da educação básica. A Escola Marieta Guedes Martins, localizada no município de Fortaleza - CE, foi onde se desenvolveu a atividade. Inicialmente, foi considerada a realidade na qual os estudantes estão inseridos, para assim ser realizada uma intervenção participativa, com o intuito de fazerem com que eles reflitam sobre o espaço ao seu redor. A metodologia utilizada para esta atividade foi, primeiramente, a elaboração de roteiros para a intervenção, com a utilização de recursos midiáticos. Os assuntos abordados em sala de aula foram o do Ciclo da Água, realizando uma aproximação entre a realidade vivida pelos discentes e o referido conteúdo, com a menção do Rio Maranguapinho, o qual envolve a escola e está diretamente ligado aos estudantes, ocorrendo, assim, no meio da intervenção, a participação ativa por meio de perguntas e considerações acerca de problemáticas que envolvem este rio. Posteriormente, foi elaborado um vídeo pelos bolsistas do PET para introduzir os estudantes ao que ia ser apresentado e por fim falas expositivas e interativas sobre o tema junto com os estudantes. Os estudantes puderam analisar como cada fase do ciclo da água se desenvolve e como estão interligadas, além de como o impacto humano pode interferir em cada fase desenvolvida, modificando os recursos hídricos e provocando problemas climáticos. Dessa maneira, o PET visa trazer e desenvolver a criticidade dos participantes desta atividade, por meio de um olhar crítico da relação sobre sociedade e natureza, além da preservação de recursos hídricos para a manutenção da vida, gerando uma conversa entre os bolsistas e os alunos, com a notória importância das vivências para a sala de aula, não desvinculando o cotidiano do espaço escolar.
Determinação de parâmetros de qualidade de embalagens metalizadas flexíveis para alimentos
Authors: Soares João Vitor Souza , Prado Wanessa Campos , Da Costa Ana Caroline Pascareli , E Silva Amanda Kezia da Silva , Pereira Carlos Victor Lamarão , Bonatto Jhonny de Araújo , Saraiva Maria das Graças Gomes , Bonatto Eyde Cristianne Saraiva
Published: March 2023

Os filmes de Polipropileno Biorientado (BOPP) são produtos amplamente consumido para fins de confecção de embalagens flexíveis para alimentos, além disso, possuem resistência mecânica, propriedades de barreira e custo benefício que permitem sua extensa utilização no mercado.  Entretanto, a forma de produção, processamento e armazenamento interferem na qualidade do produto. Considerando a importância desse tipo de embalagem, mercado e benefícios que esse tipo de embalagem pode fornecer ao consumidor final, como por exemplo a conservação adequada de certos tipos de alimentos, o objetivo da pesquisa foi analisar a qualidade de embalagens flexíveis de filmes metalizados, através de estudos, diferenciando e verificar os parâmetros de qualidade determinados pela legislação das embalagens flexíveis de BOPP metalizadas comercializadas no ramo alimentício, que foi realizada por meio de analise física. Para tanto, a metodologia utilizada consistiu na caracterização física e na determinação de propriedades gerais e de barreira. Para a caracterização foram realizadas as análises de coeficiente de fricção, resistência à tração, elongação à ruptura e módulo Young. Já para a determinação de propriedades gerais foram realizadas às análises de gramatura, força de delaminação, densidade ótica, testes de espessura e estabilidade dimensional. As propriedades de barreiras foram mensuradas de acordo com a permeabilidade ao Vapor de Água a 90% UR e permeabilidade ao Oxigênio OTR a 23ºC. Nos dias de hoje, as embalagens adquiriram diante de todos, intenso prestígio, não só pelos serviços que prestam, como pela estreita intimidade que com elas mantemos, através de sua presença constante e de sua funcionalidade. Pode-se dizer que a dupla embalagem confere maior barreira a gases e ao vapor d’água e proteção mecânica ao produto. Além disso, as embalagens individuais também podem ser impressas, permitindo que a marca do produto permaneça por mais tempo em contato com o consumidor. Diante do exposto conclui-se ainda que o controle de qualidade é de fundamental importância para a obtenção de um produto bem-acabado, livres de defeitos que possam prejudicar a sua aparência e comercialização.
Caracterização físico-química de iogurte grego probiótico de Lactobacillus acidophilus endocapsulados com calda de cubiu (Solanum sessiliflorum Dunal)
Authors: Soares João Vitor Souza , Da Costa Ana Caroline Pascareli , E Silva Amanda Kezia da Silva , Moura Rodolfo Pessoa de Melo , Pereira Carlos Victor Lamarão , Bonatto Jhonny de Araújo , Saraiva Maria das Graças Gomes , Bonatto Eyde Cristianne Saraiva
Published: March 2023

Os últimos anos possuíram o foco crescente na saúde e na qualidade de vida, comer alimentos saudáveis e reduzir a ingestão de alimentos ricos em açúcar, sal e gordura. Essa busca pela qualidade de vida tem aumentado a busca por alimentos funcionais, em particular, os probióticos são uma das categorias mais lucrativas no mercado de alimentos funcionais.  Nesse contexto, o objetivo do presente trabalho é desenvolver um iogurte probiótico enriquecido e saborizado com fruto não convencional da Amazônia, o cubiu (Solanum sessiliflorum Dunal), visando assim, contribuir para a procura e o crescimento da domesticação de frutos não convencionais dessa região. Para tanto, foi realizada a análises físico-química, viabilidade do microrganismo e vida de prateleira. Foram obtidos, portanto, umidade (64,98%), cinzas (0,61%), carboidratos (25,68%), valor calórico (156Kcal/100g), acidez titulável (0,70%), pH (4,34), lipídeos (3,84%) e proteínas (4,89%). Quanto a viabilidade da adição do microrganismo encapsulado ao iogurte, o estudo mostrou uma boa taxa de sobrevivência (aproximadamente 62%) dos microrganismos após 35 dias. A diferença de tratamento não provocou grandes alterações do ponto de vista físico-químico nos iogurtes produzidos, entretanto, há a necessidade de novos estudos que possam realizar análises mais aprofundadas do produto como análise sensorial, microbiológica e verifiquem a concentração de microrganismos probióticos presentes no produto após a acidificação.
Articulación de la educación superior a través del Programa de Integración Lineal de Estudios Técnicos
Authors: De Jiménez Evelyn Lissette Hernández
Published: March 2023

La Universidad Don Bosco, “es una Institución apolítica, de inspiración cristiana, no lucrativa  creada con carácter permanente que pertenece y patrocina la Institución Salesiana, por fundación y carisma”1, siempre comprometida con el legado de Don Bosco, de formar buenos cristianos y honrados ciudadanos, desarrolla el Proyecto de Integración Lineal de Educación Técnica(PILET) con una modalidad innovadora de educación, que permite articular la enseñanza media técnica con estudios técnicos superiores y de ingeniería. El fin de este proyecto es desarrollar un currículo continuo de los niveles educativos mencionados, y para lograrlo la Universidad Don Bosco (UDB) e Instituciones Salesianas Educativas Medias (ISEM), incorporan programas de estudio que permiten la integración de estudios universitarios con la formación media técnica y desarrollo de competencia en los estudiantes. La Universidad tiene el cometido de autorizar y acreditar los estudios Técnicos Superiores; y las ISEM, implementar los Programas de la UDB dentro de sus instalaciones; y el Ministerio de Educación de El Salvador (MINED) es el ente encargado de garantizar la legalidad del proyecto.
Lifting facial não cirúrgico com fios de Polidioxanona: relato de caso
Authors: De Oliveira Marcos Alexandre Casimiro , De Sousa Raulison Vieira , Moreira Andréia Gomes
Published: March 2023

Os fios espiculados de polidioxanona (PDO) são materiais capazes de promover um lifting facial minimamente invasivo, que proporcionam suavização de flacidez da pele e rugas de expressão sem a necessidade de grandes incisões ou formação de cicatrizes pós-operatórias, apresentam menor possibilidade de efeitos adversos, rápida cicatrização e redução do tempo de recuperação. Dessa forma, este artigo apresenta um caso clínico de um lifting facial não cirúrgico com fios de PDO em uma paciente que apresentava falta de sustentação da face com gordura ptosada e perda de elasticidade facial. Foram utilizados oito fios de PDO para reposicionamento das estruturas da face, um procedimento considerado rápido, com curto período de recuperação e um índice de complicações relativamente baixo, realizado em consultório com resultado totalmente satisfatório e estético.
Convergências teórico-metodológicas entre o paradigma da complexidade, o conceito da totalidade concreta e o Role Playing Game (RPG) aplicado ao ensino de bioética
Authors: Figueredo Jennifer Zdepski , Setin Joaquim Francisco Dias , Da Silva Janete Dubiaski
Published: March 2023

No contexto da Bioética Latino-Americana, o conceito de totalidade concreta e o paradigma da complexidade provocam a necessidade de se abandonar a concepção simplista da realidade e de se educar o indivíduo para o pensar e o agir sistêmico, descompartimentalizando o saber. No que tange ao processo de ensino-aprendizagem em Bioética, o Role Playing Game (RPG) E.D.E.N. pode constituir uma ferramenta sólida para o aprimoramento do ensino e da aprendizagem na formação de profissionais críticos e reflexivos por suas características imersivas, (trans)narrativas e críticas ligadas ao paradigma da complexidade e o conceito de totalidade concreta. Essa investigação teve como objetivo analisar as potencialidades do sistema de RPG E.D.E.N. e as convergências com o paradigma da complexidade e com o conceito de totalidade concreta, na perspectiva das bioéticas latino-americanas, através da revisão de literatura sobre as temáticas citadas e análise da mecânica do jogo. Para tal, foram realizadas duas revisões integrativas do paradigma da complexidade, do conceito de totalidade concreta e do RPG, no contexto da educação. Os resultados obtidos foram analisados e fichados, sendo categorizados de acordo com a metodologia de pesquisa de revisão integrativa da literatura. Num segundo momento, foram analisadas as principais relações existentes entre o RPG, em particular do sistema E.D.E.N, a teoria da complexidade e o conceito de totalidade concreta. A discussão dos resultados foi realizada de forma discursiva, considerando a jogabilidade do E.D.E.N e os conteúdos educacionais que podem ser desenvolvidos com a sua utilização como ferramenta pedagógica. Por fim, conclui-se que o RPG E.D.E.N. dispõe convergências diretas aos conceitos de paradigma da complexidade e totalidade concreta no contexto da Bioética Latino-Americana, sendo também uma ferramenta que possibilita o desenvolvimento e aprimoramento de habilidades para a formação cidadã e ética dos estudantes.
Wind Power Increases the Plant Diversity of Temperate Grasslands but Decreases the Dominance of Palatable Plants
Authors: Ji Guoxu , Ganjurjav Hasbagan , Hu Guozheng , Wan Zhiqiang , Yu Peidong , Li Mingjie , Gu Rui , Xiao Chan , Hashen Qimuge , Gao Qingzhu
Published: March 2023

As an important clean energy source, the scale and quantity of wind power have steadily increased under the background of global change. The construction and operation of wind power facilities have massive impacts on grassland microclimates. However, the effect of wind power operation on the plant community composition is still unclear. To investigate this issue, we selected wind farms in 6 meadow grasslands and 6 typical steppes in the central region of Inner Mongolia, the province with the largest scale of grassland wind power operations in China. At these sites, we conducted field sample surveys to obtain species information, measure plant biomass, calculate plant diversity, and take soil samples to determine soil nutrients. The results showed that wind power operation significantly reduced the dominance of
Poaceae
and
Cyperaceae
plants in both types of grasslands and significantly increased the Shannon diversity of meadow grasslands. The inconsistent responses at each experimental site led to a nonsignificant overall effect of wind power operation on the plant beta diversity. In addition, wind power operation significantly increased plant biomass in meadow grasslands. Wind power operation did not change the soil total carbon, total nitrogen, ammonium nitrogen, or nitrate nitrogen. On the basis of the results, we suggest strengthening the long-term monitoring of temperate grassland plant community composition in wind farms, and replanting of community-building species could be done at appropriate times.
Influence of Vegetation Dynamics on Soil Organic Carbon and Its Fractions in a Coastal Wetland
Authors: Qiu Shuying , Wang Zhenyu , Xu Jiali , Cui Erqian , Yan Liming
Published: March 2023

Coastal wetland ecosystems are highly efficient in sequestering carbon (C) to mitigate climate change. However, it is still unclear how vegetation dynamics affect soil organic carbon (SOC) and its fractions (labile and recalcitrant C (LC and RC)) in coastal wetlands. Here, we quantified the effects of saltmarsh vegetation dynamics on the SOC and its fractions using the invasiveSpartina alternifloraand co-occurring nativePhragmites australiscommunities as a model. SOC contents in these 2 communities showed similar spatial patterns with an inverted U-shaped curve from tidal mudflats to vegetated marshes. Our results suggested that plant ecophysiological traits play a primary role in regulating the spatial distribution of SOC. In addition, the lower ratio of leaf to shoot inP. australiscommunity facilitates the accumulation of RC, while the lower soil pH inS. alternifloramay accelerate the decomposition of RC. The findings indicated thatS. alternifloracould accumulate more C in the soil owing to its greater plant biomass and photosynthesis rate. However, the reduced soil pH byS. alterniflorainvasion might restrain SOC accumulation. Our findings shed light on the impacts of long-term species invasion on SOC and its fractions in coastal wetlands under global changes.
Pengaruh Faktor Fundamental dan Risiko Sistematis terhadap Harga Saham Sektor Trade Service and Investment
Authors: Steven Steven , Ghazi Muhammad
Published: March 2023

This research have purpose to test the factors that influence company’s share price. Independent variables in this research consist of Return On Equity, Price Earning Ratio, Debt to Equity Ratio, Earning Per Share, Net Profit Margin and Systematic Risk. The data for this research are Trade Service and Investment listed on the Indonesia Stock Exchange (IDX) for the period 2013 to 2019. This research uses 98 samples and the sample selection method used is the purposive sampling method. This research test uses multiple regression analysis. Based on the results of the reseach, it can be concluded that Price Earning Ratio and earning Per Sharehaspositive effect on Stock Price, where an increase in Price Earning Ratio and Earning Per Share will increase the Stock Price. However, Return On Equity, Debt to Equity Ratio, Net Profit Margin, and Market Price have no effect on Stock Price.
Faktor-Faktor yang mempengaruhi Return Saham pada Perusahaan Food and Beverages
Authors: Bodas Andriani Dwi Putri , Emir Kharismar
Published: March 2023

The purpose of this research is to test and analyze empirically the factors that influence stock returns. The object of this research is a food and beverage company that is listed on the Indonesia Stock Exchange for 5 years, the 2016-2020 period. The sample collection method used in this study was purposive sampling. There were 17 companies selected as the final sample that met the criteria and obtained 85 observational data as samples. Data were analyzed using descriptive statistics and panel data regression techniques, with a random effect model to test the hypothesis. The results of this study indicate that return on assets has a positive effect on stock returns. Meanwhile, return on equity, current ratio, debt to equity ratio, price earning ratio, and company size do not affect stock returns.
Antioxidant and antimicrobial activity of essential oil from round kumquat (Fortunella japonica) peel using supercritical CO2 extraction
Authors: Vo Tam Dinh Le , Nguyen Dao Thi Mai
Published: March 2023

In this study, the highest oil yield of kumquat peel essential oil extraction of 3.89±0.03% was achieved under the supercritical carbon dioxide (SC-CO2) extraction condition including 250 bars, 50°C, fluid rate of 20 g/min and 120 min of extraction. Limonene comprising 39.25% was the main component of the oil. It showed 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) cation radical (ABTS•+) scavenging activity and ferric reducing antioxidant power (FRAP) value of 25.29±0.17mM Trolox equivalent (mM TE)/g dry weight and 6.25±0.15 mM TE/g dry weight, 4565 and 4623 folds lower than those of vitamin C, respectively. Inhibition zone diameter (IZD) of pure oil equaled to that of (i) 9.2 µg/mL Ampicillin solution against Bacillus subtilis, (ii) 23.4 µg/mL Ampicillin solution against Staphylococcus aureus, (iii) 7.2 µg/mL Streptomycin solution against Klebsiella pneumoniae, (iv) 35.1 µg/mL Amikacin solution against Pseudomonas aeruginosa, and (v) 37.7 µg/mL Amikacin solution against Proteus mirabilis. Meanwhile, minimal inhibitory concentration (MIC) value of the oil was 5 mg/mL for B. subtilis and 10 mg/mL for the rest bacteria.
Evaluation of bioactive compounds and antioxidant capacity of Romanian berries
Authors: Multescu Mihaela , Susman Iulia-Elena
Published: March 2023

The objective of this paper was to evaluate seven different berries most consumed in Romania in order to determine the bioactive compounds: total phenolics content, total flavonoid content, total anthocyanins content, antioxidant activity by DPPH and total antioxidant capacity (water-soluble and lipid-soluble by photochemiluminescence assay, PCL). The analyzed fruits contain significant amounts of phenolic compounds between 18.91 and 383.06 mg gallic acid equivalents per 100 grams of fresh berries. Black currant extract had the highest content of total phenolic compounds, 383.06 mg GAE/100g, while the lowest level was obtained for the gooseberry, 18.91 mg GAE/100g. DPPH values varied between 22.15 and 892.35μmol Trolox Equivalent/100g fresh berries. Strong positive correlations between the antioxidant capacity of lipid-soluble compounds measured by PCL and DPPH was found (r= 0.9153). The results obtained demonstrated that different Romanian berries studied show a great antioxidant activity with possible benefits on human health.