bluuebunny/crossref_metadata_2025 huggingface dataset:
Kajian Jagung dan Mocaf sebagai Bahan Baku Beras Artifisial Menggunakan Alat Ekstruder Ulir Tunggal
Authors: Wibisono Yossi , Warsito Heri
Published: September 2024

Ketergantungan masyarakat terhadap beras saat ini sangat tinggi dan kebutuhan tersebut harus dipenuhi dari impor, sehingga kebutuhan impor dipastikan meningkat dari waktu ke waktu, baik dari sisi jumlah maupun harga beli. Indonesia saat ini menduduki peringkat ke 63 dari 113 negara ditinjau dari sisi ketahanan pangan. Adanya konsumsi beras yang semakin tinggi juga merupakan salah satu penyebab angka penderita penderita diabetes meningkat, menimbang beras adalah produk dengan nilai IG tinggi. Salah satu solusi yang dapat dilakukan adalah mengganti beras dengan beras artifisial yang terbuat dari bahan lokal yang murah dan memiliki nilai IG yang rendah. Diantaranya jagung yang merupakan komoditi lokal unggulan Kabupaten Jember. Politeknik Negeri Jember telah melakukan riset formulasi ideal beras artifisial yakni menggunakan 50% jagung dan 50% mocaf dan juga telah mengoptimalisasi alat pembuatan beras artifisial yakni ekstruder  ulir tunggal. Tujuan penelitian ini adalah menghasilkan metode pembuatan beras artifisial dengan IG rendah, dan ekonomis menggunakan bahan jagung lokal dan mocaf yang telah terfermentasi dengan bakteri L. plantarum 15420 serta diproduksi menggunakan ekstruder ulir tunggal dan dikaji aspek kimia dan fisik artifisial. Beras artifisial yang dihasilkan memiliki kadar abu 0,52%, , amilosa 13,11%, amilopektin 30,28% (dengan rasio 31:68), protein 11,2%, Ca 0,04%, kadar lemak 0,5%, kadar air 11,3% dan pati resisten 6,4%. Adapun nilai  IG  beras artifisial adalah 51,2. Terkait dengan feasibility study didapat nilai R/C rasio sebesar 1,31. Harga beras artifisial Polije adalah Rp. 37.500,- per kemasan (2,5 kg) yang lebih ekonomis dibandingkan dengan beras IR 64.
Sintesis Nanoemulsi Ekstrak Cabe Jawa (Piper retrofractum Vahl): Kajian Rasio VCO:Tween 80 dan Lama Homogenisasi
Authors: Rahman Askur , Mojiono Mojiono , Fansuri Hamzah , Puspita Diah Ayu
Published: September 2024

Piperin yang diperoleh dari ekstrak cabe Jawa merupakan senyawa penting, namun memiliki kelemahan susah larut dalam air sehingga biavailabilitasnya rendah. Salah satu upaya yang bisa dilakukan untuk mengatasi hal tersebut dengan diubah ukurannya menjadi nano seperti dibuat sediaan nanoemulsi. Penelitian ini bertujuan untuk mengetahui pengaruh rasio VCO:Tween 80 dan waktu homogenisasi terhadap karakteristik nanoemulsi ekstrak cabe Jawa. Metode penelitian menggunakan rancangan acak lengkap dengan perlakuaan rasio VCO:Tween 80 dan waktu homogenisasi. Parameter penelitian meliputi uji organoleptik, uji persen transmitan, uji pH, uji viskositas, uji kadar piperin, uji ukuran partikel, uji indeks polidispersitas, dan uji zeta potensial. Penelitian ini menghasilkan nilai persen transmitan 97,05-99,55%, pH 4,89-5,56, viskositas 0,35-0,76 cP, kadar piperin 6,29 – 12,25%, ukuran partikel 41,482 nm dan 266,62 nm, indeks polidispersitas 0,7446 dan 0,4358, zeta potensial -4,443 mV dan -2,166 mV. Penelitian ini diharapkan dapat menjadi acuan dalam pemanfaat kandungan piperin untuk kepentingan rempah dan obat.
USE OF CAPS SCRAPBOOK MEDIA TO INCREASE STUDENTS' LEARNING MOTIVATION IN LEARNING FIKIH ALMS MATERIAL FIFTH GRADES
Authors: Kasanah Agustin Arianti Uswatun , Hibatullah Mahbubah Lihani , Mala Asnal
Published: September 2024

This research explains how scrapbook learning media is used to increase student learning motivation in learning jurisprudence in grade 5 students at SD/MI. The method used in this research is literature study. The conclusion in this research is that by using the Caps Scrapbook learning media to increase students' learning motivation in class 5 SD/MI fiqh learning, it can be concluded that using the Caps Scrapbook learning media can increase students' learning motivation, apart from increasing students' learning motivation, it can also make students become more active in learning. Caps scrapbook learning media is an alternative that can be used as a learning media that is not only fun but also effective. Scrapbook caps are a flexible learning medium because they can be applied in any subject and at any level. The conclusions of this research are proven from various research results of other people that have been carried out previously.
IMPROVING THE ABILITY TO UNDERSTAND THE CONCEPT OF MULTIPLICATION THROUGH THE RME APPROACH WITH THE HELP OF THE CONGKLAK GAME FOR CLASS III ELEMENTARY SCHOOL
Authors: Ummayyah Miftakhatul , Lungdiansari Nevananda Arica , Pratiwi Friska Dyah Ayuk , Ermawati Diana
Published: September 2024

This research was carried out because it saw a lack of optimal understanding of the concept of multiplication calculations. Objective from study This namely knowing how to increase the ability to understand the concept of calculating multiplication using (Realistic Mathematic Education) RME through the innovation of the congklak game in mathematics learning. To obtain the results of this research, the research method used was Classroom Action Research (PTK). The subjects of this research were 23 grade III students at SD 2 Klaling for the 2022/2023 academic year, consisting of 7 male students and 16 female students. The data sources for this research are students and teachers. Data collection techniques include interviews, observation, tests and documentation. Data analysis techniques are quantitative and qualitative. This research was carried out through two cycles that include four stages: planning, implementation, observation, and reflection. The research results showed that in cycle I the average score was 83.63 and 88.94 with a completion percentage of 84% and 94%, while in cycle II the average score was 95.78 with a completion percentage of 100%. In this way, it can be shown that the indicators of success have been achieved in accordance with what was expected, namely that at least 70% of students obtained a score ≥ 70.
STUDENTS’ REFLECTION ON THEIR PERSONAL AND ACADEMIC LIFE DURING EARLY COVID-19 PANDEMIC
Authors: Inharjanto Anselmus , Raharjo Yohanes Maria Restu Dian
Published: September 2024

Our world has been transformed dramatically by COVID-19 Pandemic as it affected health, economy, politic, social, education, etc. The aim of this research is discovering students’ reflection toward their personal and academic life during early COVID-19 pandmic situations grounded on three zones, namely fear, learning, and growth zones. This descriptive qualitative survey research used questionnaires to gather the data from 187 freshmen in a university in Palembang. The data were analyzed and interpreted by using a thematic analysis consisting of six steps, namely (1) familiarizing with the data, (2) generating initial codes, (3) searching for themes, (4) reviewing themes, (5) defining and naming themes, and (6) producing the report. The research results show that students reflected on their personal and academic life differently when it was reflected based on the three zones. There were also some factors influencing the reflection, namely the transition between senior high school and university and the typically online learning process demanding autonomous learning. Finally, the research suggests that, alongside the society, students might learn how to move gradually one zone to another in order to overcome this global crisis. Therefore, covid-19 pandemic should be perceived then as a lesson learnt.
ANALISIS PERILAKU PEMBELIAN IMPULSIF PADA KONSUMEN ONLINE DI PROVINSI JAMBI
Authors: Hassandi Irfan , R Mardiana , Sabrina Hanan Laras , Mulyono Herry , Marcelino Felyx
Published: September 2024

This research aims to find the variable that influences impulsive buying behavior for online customers in Jambi province. The model used for this research is Stimulus-organism-respond model. There are 2 independent variables, 2 mediating variables and 1 dependent variable interpret Stimulus-organism-respond model. To test the model this research used Structural Equation modelling. The result shows the variable that influences impulsive buying behavior of Jambi province buyers is arousal. SMEs in Jambi can develop more strategies to encourage the arousal of online customer such creating a periodical sales discount with the aim of the program to gain impulsive buying behavior from customer arousal and increasing sales from that behavior.
THE INFLUENCE OF COMMUNICATION AND SOCIAL WORK ENVIRONMENT ON EMPLOYEES' INTERPERSONAL RELATIONSHIPS
Authors: Nadya Rahmadhanti  , Aurik Gustomo
Published: September 2024

This study explores the influence of communication and the social work environment on employees' interpersonal relationships, focusing on a sample of 60 employees from the Cimahi City Regional Government Agency. The research employs a saturated sampling method, where the entire population is included in the sample, ensuring comprehensive data representation. Data was collected through the distribution of structured questionnaires, designed to assess the quality of communication, the nature of the social work environment, and the resulting interpersonal relationships among employees. To analyze the collected data, multiple linear regression, t-tests, and f-tests were applied, allowing for both simultaneous and individual assessment of the variables in question. The findings reveal that both communication and the social work environment have a significant combined impact on the quality of interpersonal relationships among employees. Furthermore, the study indicates that when analyzed separately, both communication and the social work environment independently contribute to the development and maintenance of interpersonal relationships within the workplace. These results underscore the importance of fostering effective communication and a supportive social work environment to enhance workplace relationships, which are crucial for organizational success and employee well-being.
AVALIAÇÃO DA QUALIDADE DO SERVIÇO PRESTADO POR UMA UNIDADE DE ENSINO DA REDE PÚBLICA NA REGIÃO METROPOLITANA DO RECIFE
Authors: Matias Claudemice Correia do Nascimento , Jerônimo Taciana De Barros , Melo Fagner José Coutinho de
Published: September 2024

A educação pública para todos e com qualidade é um objetivo governamental e previsto na constituição civil, todavia, faz-se necessário compreender o que se pode chamar, neste contexto, de qualidade. Desta maneira, esta pesquisa possui como objetivo avaliar a qualidade
do serviço prestado, considerando a expectativa e percepção dos estudantes e o clima organizacional dos prestadores de serviço, em uma unidade de ensino da rede pública na região metropolitana do Recife. Para avaliar a qualidade foi usado o modelo SERVQUAL, o qual mensura as percepções e expectativas que os clientes possuem a respeito do serviço. E, para diagnosticar o clima organizacional foi aplicado um questionário, elaborado através do referencial teórico. Participaram da pesquisa 7 servidores administrativos, 16 professores e 6 coordenadores, com total de 29 servidores públicos da unidade escola e 60 estudantes, a amostra de estudantes participantes da pesquisa foi estimada por conveniência, sendo uma amostra não probabilística. Desta maneira, os resultados deste trabalho refletem a amostra estudada e não devem ser generalizados. Foi encontrado que há grau elevado de satisfação nos aspectos de relacionamento com a gestão e coordenação, e insatisfação quanto à comunicação
organizacional. Já os aspectos da avaliação da qualidade que contribuem para a qualidade do serviço são: boa localização e ser de fácil acesso; ter ambiente físico limpo, bem iluminado e com temperatura agradável; ter professores e servidores sempre tem dispostos em ajudar.
TECNOLOGIAS DIGITAIS DE INFORMAÇÃO E COMUNICAÇÃO POSSIBILIDADES NAS AULAS DE GEOGRAFIA COM O USO DO GOOGLE EARTH E DO GOOGLE MAPS COMO RECURSO PEDAGÓGICO NO ENSINO DE GEOGRAFIA
Authors: Ferreira Joelson Miranda
Published: September 2024

Este Trabalho de Conclusão Final tem uma abordagem qualitativa e base bibliográfica. Investiga o impacto das Tecnologias Digitais de Informação e Comunicação (TDICs) no ensino de Geografia, destacando sua importância no desenvolvimento das habilidades geográficas dos alunos. No marco teórico, explora o uso das TDICs para aprimorar a compreensão de mapas e habilidades geográficas, enfatizando a personalização de mapas como método de ensino. Também aborda a acessibilidade e facilidade de uso das TDICs no contexto educacional. O estudo analisa os desafios enfrentados pelos educadores na integração das TDICs no ensino de Geografia, como (i) desigualdades de acesso; (ii) falta de infraestrutura escolar; e (iii) resistência dos professores a novas metodologias. No entanto, não se limita a identificar obstáculos, apresentando estratégias para adaptar o uso das TDICs a diferentes faixas etárias e níveis de aprendizado, envolvendo os alunos com ferramentas tecnológicas pertinentes ao seu cotidiano. Os resultados indicam o potencial que as TDICs representam, como o Google Earth e o Google Maps, no ensino de Geografia, proporcionando abordagens interativas e envolventes que aprimoram a interpretação de mapas e habilidades geográficas dos alunos além de preparar os estudantes para um mundo digital e complexo.
Educação Intergeracional Entre Crianças e Pessoas Idosas: Um Caminho para Vencer o Analfabetismo Funcional
Authors: Oliveira Nubia Pereira Brito de , Silva Neto Luiz Sinésio , Osório Neila Barbosa
Published: September 2024

O crescimento da população idosa no Brasil demanda discussões sobre a inclusão desse grupo no contexto educacional. Uma abordagem possível é acompanhar o Plano Nacional de Educação (PNE) e colaborar com a redução do analfabetismo funcional nesta faixa etária. O objetivo do trabalho é descrever e compreender como essa abordagem acontece na Universidade da Maturidade, da Universidade Federal do Tocantins, ao permitir que os idosos retornem à escola e participem de processos educativos intergeracionais. A metodologia qualitativa envolve análise bibliográfica e de documentos de um dos projetos da prática extensio- nista, realizada nos anos de 2022 e 2023. Os resultados apontam para a extensão universitária como um caminho para a articulação entre universidade e sociedade, com práticas de Educação ao longo da vida que podem envolver-se com a Educação Infantil. As conclusões defen- dem a construção de parcerias que resgatem a cidadania das pessoas idosas ao retornarem para práticas educativas em escolas com crianças, em ações pedagógicas que podem vencer o analfabetismo funcional ao preservar a dignidade humana diante do envelhecimento e à resolução de conflitos intergeracionais em práticas entre crianças e idosos nos espaços educativos.
O DESAPARECIMENTO DE PESSOAS: ASPECTOS GERAIS E O ACOMETIMENTO DE IDOSOS DESAPARECIDOS NO CEARÁ E O BRASIL
Authors: Paz Paulo Augusto Barros , Cavalcante Junior Luís Rodrigues
Published: September 2024

Este artigo visa analisar as premissas básicas envolvendo o desapare- cimento de pessoas idosas no Brasil, a partir de enfoque especial no Estado do Ceará. Destarte, perpassa-se por análise da evolução legislativa pertinente ao tema no Brasil, as políticas públicas adotadas e a produção doutrinária sobre o tema. Desta feita, como objetivo geral deste estudo se almeja, a partir de um levantamento bibliográfico, utilizando-se de um método de pesquisa dedutivo, revisitar os postulados da construção da teoria atinente ao enfrentamento ao desaparecimento de pessoas e sua influência no desenvolvimento das políticas públicas no Brasil. Como objetivo específico, denota-se: a) analisar a evolução da legislação atinente ao tema; b) pesquisar sobre ferramentas que podem ser utilizadas pelo poder público; c) propor novas medidas de apoio à causa.
RESPONSABILIDADE CIVIL PELO ABANDONO AFETIVO INVERSO: UMA ANÁLISE JURISPRUDENCIAL SOBRE O DEVER DE CUIDADO À PESSOA IDOSA
Authors: Oliveira Lira Ramos de
Published: September 2024

O presente artigo tem como escopo analisar a responsabilidade civil pelo abandono afetivo inverso. Tem-se como objetivo geral examinar a (im)possibilidade da responsabilidade civil dos filhos por abandono afetivo da pessoa idosa. Já os objetivos específicos são: analisar o dever de cuidado à pessoa idosa nas relações familiares; compreender o aban- dono afetivo inverso; examinar a responsabilidade civil pelo dano moral do abandono afetivo inverso e sua abordagem pelos tribunais. Como delineamento metodológico, tem-se uma pesquisa qualitativa bibliográfica, realizada através de obras especializadas, como livros, artigos científicos, legislação e jurisprudências. A escolha do referido tema se mostra de grande relevância no contexto social do abandono afetivo da pessoa idosa por seus descendentes, mormente a análise da jurisprudência sobre a responsabilidade civil por dano moral. O abandono afetivo é o tipo de situação que abala a integridade física, psicológica, social e moral da pessoa idosa e suscita questionamentos quanto à responsabilidade civil dos filhos, além da necessidade de uma regulamentação para que possa ser judicialmente examinado, por meio de ação de reparação de danos morais. Concluiu-se, da análise de um caso concreto, pela responsabilidade civil subjetiva por conduta omis- siva dos filhos em relação ao dever de cuidado com o pai (ato ilícito), o trauma psicológico sofrido (dano da personalidade) e o nexo causal entre o ato ilícito e o dano, caracterizando o abandono afetivo inverso. Este artigo tem uma perspectiva de urgência sobre o abandono afetivo dos pais idosos pelos filhos, sendo um estigma da falta de cuidado na contemporaneidade.
A REDE DE PROTEÇÃO À PESSOA IDOSA: INSTITUIÇÕES DO ESTADO DO CEARÁ
Authors: Martins Dayse Braga , Silva Liandra Victoria Eloi , Mourão Ana Clara Castelo Branco
Published: September 2024

O presente trabalho objetiva demonstrar quais são as redes de apoio da cidade de Fortaleza, as quais objetivam a proteção dos direitos da pessoa idosa, de modo a fortalecer a valorização desses direitos e garantias. Para a consecução desse objetivo, realizou-se pesquisa bibliográfica na doutrina nacional, bem como pesquisa documental na legislação pátria. Trata-se de uma metodologia de cunho exploratório e descritivo, com abordagem qualitativa. Desse modo, concluiu-se que o envelhecimento populacional é um fenômeno global, impulsionado pelo avanço no acesso à saúde e à qualidade de vida, resultando em um aumento na expectativa de vida. Isso tem impactado a estrutura demográfica de países como o Brasil, que está passando por um rápido processo de envelhecimento. Para acompanhar essa mudança, o Direito tem se adaptado, culminando na promulgação do Estatuto do Idoso em 2003 e na instituição do Ano de Valorização e Defesa dos Direitos Humanos da Pessoa Idosa em 2018. Essas medidas visam proteger e ampliar os direitos dos idosos, reconhe- cendo suas necessidades específicas. No contexto de Fortaleza, é essencial identificar as redes de apoio que buscam garantir a proteção dos direitos dos idosos, especialmente diante de crimes e violências dirigidos a esse grupo. A participação das instituições de apoio desempenham um papel crucial na garantia e percepção de direitos que permeiam a vida social da pessoa idosa.
O ACESSO DE SURDOS AO CURSO DE QUÍMICA DA UFRJ-MACAÉ
Authors: Figueiredo Lorrane dos Anjos , Anchieta Ester Vitória Basílio
Published: September 2024

A inclusão do Surdo no ensino superior é um tema extremamente relevante e necessita de debate, pois apenas 7% desse população no Brasil possui diploma nesse nível de ensino. Com a existência de leis e decretos que regulamentam a inclusão da comunidade Surda em instituições de ensino superior, o presente trabalho tem como objetivo analisar e discutir se realmente ela ocorre e se o corpo docente do curso de Química da Universidade Federal do Rio de Janeiro - Campus Macaé, está apto a atender esse público.
HERANÇA SILENCIOSA: UMA ANÁLISE DA DAS LÍNGUAS DE SINAIS E DA COMUNIDADE SURDA DA ANTIGUIDADE AOS TEMPOS MODERNOS
Authors: Santos Larissa Gonçalves dos , Silva Layla Rodrigues da
Published: September 2024

Este trabalho possui o intuito de apresentar aspectos históricos, socioculturais e linguísticos da comunidade Surda, não apontando as limitações biológicas, mas desenvolvendo uma nova perspectiva na representação da realidade dessa comunidade. Para tanto, considera a valorização da cultura e identidade das Pessoas Surdas e traz à discussão pontos importantes que não são discutidos no dia a dia.
MAPEAMENTO BIBLIOMÉTRICO DA RELAÇÃO ENTRE LIBRAS E EDUCAÇÃO: UMA REVISÃO INTEGRATIVA COM BIBLIOMETRIX
Authors: Miranda Aurenita Émile Sá , Nogueira Nícolas Chenquel , Silva. Layla Rodrigues da
Published: September 2024

A inserção da Língua Brasileira de Sinais (Libras) é importante para o processo de ensino, aprendizagem e inclusão dos Surdos no sistema educacional. No meio acadêmico, as produções intelectuais ressaltam a importância do assunto para a sociedade. Neste trabalho, realizamos uma revisão integrativa de artigos amostrados na SciELO, Scopus e Web of Science com descritores do tema. Nossa pesquisa identificou 227 trabalhos e 533 autores de instituições nacionais e internacionais, entre os anos de 1991 e 2023, apresentando uma média de 23,3 artigos anuais nos últimos cinco anos. Identificamos uma tendência crescente na produção após o ano de 2002. Uma análise dos artigos com maior número de citações na amostra revela discussões sobre a inserção do Surdo nas escolas, conhecimentos acerca de saúde na comunidade, déficit de material didático acessível, entre outros. Nesse contexto, ressaltamos a relevância das produções na desconstrução de estereótipos e preconceitos com a comunidade Surda.
Review: Description of Porous Media and their Sorption Characteristics as Correlated Structures
Authors: Cordero-Sánchez Salomón , Esparza-Schulz Juan M. , Ibarra Ilich A. , Trejos Víctor M. , Tellez-Gonzalez Annabel L. , Villegas-Cortez Juan , Román-Alonso Graciela , Alas Salomón J.
Published: September 2024

This review presents an in-depth analysis of the progress and achievements in the study of porous structures by the Physicochemical of Surfaces Academic Area at the Universidad Autónoma Metropolitana, Iztapalapa's Chemistry Department. A straightforward model for depicting disordered structures has been introduced here, facilitating the discovery of correlations between adjacent elements within these structures. Such correlations have proven to be crucial in the classification and analysis of different disordered porous materials and have been instrumental in the interpretation and categorization of nitrogen adsorption isotherms.
 
Resumen. Este artículo proporciona una revisión completa de los avances y aportes realizados en la caracterización de estructuras porosas dentro del Área Académica de Fisicoquímica de Superficies del Departamento de Química de la Universidad Autónoma Metropolitana, Iztapalapa. Dentro de esta Área Académica se ha desarrollado un modelo simple para describir estructuras desordenadas, que permitió visualizar la correlación entre elementos vecinos que constituyen dichas estructuras. Estas correlaciones han resultado en un factor clave para clasificar y categorizar diversos medios porosos desordenados, además de servir como herramientas útiles para interpretar y clasificar las isotermas de adsorción del nitrógeno.
A Review of Mexican Contributions to Li₂CuO₂ and its Chemical Modifications as Cathode Materials for Lithium-Ion Batteries
Authors: García-Carrillo B.A. , Martínez A de J , Jiménez-Cabañas E. L. , Martínez-Cruz MA , Juarez-Yescas C. , Ramos-Sánchez G.
Published: September 2024

Over the past few decades, battery research has primarily focused on reducing costs and increasing energy density. There have been significant efforts to identify alternative cathode materials that could replace cobalt-based ones, with the goal of finding more environmentally friendly and cost-effective options. In this context, copper-based cathodes have emerged as promising candidates. The appeal of copper-based cathodes lies in their relatively high abundance, particularly in Mexico, their high theoretical energy density, and the potential to enhance their properties by altering their chemical structure. In recent years, numerous research initiatives in Mexico have aimed to make Li2CuO2 cathodes a viable option. This review examines the recent advances and future perspectives of these efforts, with a particular emphasis on the latest attempts to modify the synthesis route and incorporate multiple dopants to create synergistic effects.
 
Resumen. Durante las últimas décadas, la investigación sobre baterías se ha enfocado principalmente en la disminución de costos y el incremento de la densidad energética. Se han realizado importantes esfuerzos para identificar materiales catódicos alternativos que podrían reemplazar a los materiales basados en cobalto, con el objetivo de encontrar opciones rentables y con menor impacto al medio ambiente. En este contexto, los materiales catódicos basados en cobre se han convertido en candidatos prometedores. El interés por los cátodos basados en cobre radica en su abundancia relativamente alta, particularmente en México, su alta densidad energética teórica y la cualidad de mejorar sus propiedades alterando su estructura química. En los últimos años, numerosas propuestas de investigación en México han tenido como objetivo hacer de los cátodos de Li2CuO2 una opción viable. Este resumen recopila los avances recientes y las perspectivas a futuro de estos esfuerzos, con especial énfasis en los últimos intentos de modificar la ruta de síntesis y, a su vez, incorporar múltiples dopantes para crear efectos sinérgicos.
Study of GTA-Welded Joints of ZW61 Magnesium Alloy — Effect of Welding Current on the Microstructure and Mechanical Properties
Authors:   American Welding Society, ZHOU WEIYANG , LE QICHI , SHI YE , WANG TONG , LIAO QIYU , HU WENXIN
Published: September 2024

An attempt has been made to weld ZW61 magnesium alloy extruded plates by gas tungsten arc welding (GTAW). In this paper, the zone with the largest average grain size in the welded joint was the fusion zone (FZ) rather than the heat-affected zone (HAZ). The grains of the FZ were nearly equiaxed, and their average size increased gradually with the increase of welding current. Simultaneously, the mechanical properties of the joints decreased with the increase of welding current under the set conditions of this experiment. The optimum mechanical properties of the joints were obtained at a welding current of 100 A. Their ultimate tensile strength (UTS), yield strength (YS), and elongation (EL) were 230 MPa, 103 MPa, and 19.2%, respectively, while the joint efficiency (σb / σb BM) was only 77.7%. The fracture locations of all the joints were found in the FZ. Excessive grain size was one of the significant factors contributing to the weakness of this zone. In addition, the semicontinuous second phase on the grain boundary induced high-stress concentrations, contributing to the fracture of the welded joint. The tensile properties of the joints can be improved by limiting heat input.
A estética e o ritmo como expressões existenciais de um ser frágil e em cuidados
Authors: Resende José Manuel , Guerra Maria Rosália
Published: September 2024

Partindo do acompanhamento feito a uma pessoa em processo de demência continuado e dependente de terceiros, o presente estudo tem por objetivo compreender os envolvimentos que decorrem em ambientes de cuidados, dentro de casa ou fora. Elegeu-se uma abordagem de tipo qualitativo e pragmático-fenomenológico com o objetivo de compreender o objeto, a partir daqueles que o vivem, na relação consigo mesmos, com a alteridade e com o seu entorno. A recolha de dados foi feita por meio de técnicas de observação direta e participante, procurando acompanhar cada ser humano detalhadamente. A partir de uma abordagem microanalítica, foi possível compreender que as pessoas com demência envolvem-se de forma íntima e sensível em experiências de cuidado, o que lhes permite seguir adiante, num ambiente em que se sustente uma estética e uma ritmicidade muito mais afetivas, corporais e emocionais do que racionais.
Treatment motivation in adolescent girls with obesity
Authors: Votineva A. S. , Prokhorova Zh. V. , Polyakov V. M. , Cherevikova I. A.
Published: September 2024

Background. The prevalence of obesity among children is increasing, which is a serious healthcare problem. In healthcare, the problem of motivation affects an important area that reflects its effectiveness – patient motivation for treatment. A decrease in treatment motivation reduces therapeutic effect, increases the complication rate of the underlying disease, reduces the quality of life of patients and increases treatment costs.

The aim of the work. To identify the differences in treatment motivation in adolescent girls with obesity.

Materials and methods. The pilot study was carried out at the clinic of the Scientific Centre for Family Health and Human Reproduction Problems. The study included 40 girls aged 14–16 years suffering from grade 1 obesity. To study treatment motivation, we used the following methods: J. Nuttin’s, D. McClelland’s, S.R. Panteleev’s, J.K. Collins’, method of the self-conception research, the “Type of Attitude Towards the Disease” method; attitude towards the disease.

Results. The study showed that the adolescents who were admitted into hospital for the first time had higher treatment motivation during the study than the adolescents who were readmitted into hospital. The adolescents who were readmitted into hospital felt guilty remorse, anxious suspiciousness, and fear of failure. The dominant type of treatment motivation in both groups consisted of the following attitudes: achieving symptomatic improvement; receiving a “secondary gain” from the disease; other motivation (passive position).

Conclusion. The obtained data from the study of treatment motivation in adolescent girls with obesity can be used to optimize the process of therapy of such patients in a hospital setting.
Population structure of the B0/W148 Mycobacterium tuberculosis subtype: Phylogenetic analysis and characteristics of genotypic drug resistance
Authors: Sinkov V. V. , Ogarkov O. V.
Published: September 2024

Background. The B0/W148 subtype belongs to the L2phylogenetic lineage of Mycobacterium tuberculosis and is most common in the former Soviet Union. Test systems capable of detecting genetic variants of the pathogen are needed for effective epidemiological surveillance. Studying the genetic diversity of B0/W148 strains and finding molecular markers suitable for their genotyping are key steps in the development of such diagnostic tools.

The aim of the work. To study the phylogenetic diversity of the B0/W148 subtype circulating in the territory of the Russian Federation and neighboring countries in order to identify unique clades and search for specific molecular markers suitable for their precise identification.

Materials and methods. The study used DNA samples of B0/W148 strains (n = 34) isolated in different regions of the Russian Federation, as well as genomic data obtained from the SRA NCBI (Sequence Read Archive of the National Center for Biotechnology Information) (n = 419). Phylogenetic analysis and principal component analysis (PCA) of whole genome sequencing (WGS) data were used to analyze genetic diversity and to identify molecular markers. An evolutionary reconstruction of the age of the identified clades was carried out.

Results. The analysis of the B0/W148 genomes (n = 453) revealed that they are divided into three phylogenetic clades: B – basal, M – minor and P – principal. It was found that specific mutations in the M and P clades allow for their differential diagnosis. The 4137219T>G mutation is unique for the M clade, and the 2241091C>T mutation is unique for the P clade. No characteristic mutations were found among the strains of B clade. In addition, unique mutation profiles in the genes responsible for drug resistance were identified for the clades.

Conclusion. The study showed that B0/W148 strains represent a genetically heterogeneous population divided into B, M and P clades. M and P Clades have unique mutations that allow for their identification. It was also found that all clades are characterized by the presence of specific mutation profiles in drug resistance genes.
Association of polymorphic variants of the leptin gene with anthropometric and biochemical parameters in adolescents with different weight status
Authors: Ershova O. A. , Bairova T. A. , Sambyalova A. Yu. , Belyaeva E. V. , Sinkov V. V. , Balzhieva V. V. , Rychkova L. V.
Published: September 2024

The leptin gene (LEP) is considered as a potential candidate gene affecting metabolic disorders associated with predisposition to overweight and obesity.

The aim of the study. To search for single nucleotide polymorphisms (SNP) of the leptin gene and to assess their relationship with anthropometric and biochemical parameters in Russian and Buryat adolescents with different weight status.

Materials and methods. The study included adolescents of two ethnic groups – Caucasoid (Russians) and Mongoloids (Buryats) – aged 11–17 years (mean age 14.8 ± 0.45 years) with different weight status. We assessed anthropometric parameters, determined biochemical parameters and leptin level in the blood plasma, and sequenced the leptin gene fragment localized in the 128253475–128255334 region (1859 bp) of this gene using the Sanger method.

Results. The sequencing of the leptin gene fragment identified 10 single nucleotide substitutions (rs28954118, rs3828942, rs759854910, rs199893150, rs7788818, rs144755411, rs917105894, chr7:128255051, chr7:128255092, chr7:128254681), two of them (rs28954118, rs144755411) had a correlation with biochemical and anthropometric parameters. In the group of Russian adolescents with overweight and/or obesity, the carriers of the AT variant of rs28954118 had statistically significantly higher levels of triglycerides (TG), very low density lipoprotein (VLDL) cholesterol, skin fold thickness on the abdomen and fat mass percentage compared with carriers of the AA genotype. In the control group of Buryat adolescents, the parameters of waist width, skin fold thickness on the hip and waist width/height ratio are statistically significantly lower in carriers of the CT variant of rs144755411 compared with carriers of the CC genotype.

Conclusion. AT genotype of rs28954118 was identified only in Russian adolescents with overweight and/or obesity, and was accompanied with statistically significantly high values of TG, VLDL cholesterol, skin fold thickness on the abdomen and fat mass percentage. The SNPs we identified do not affect the concentration of leptin.
Revisiting the Challenges of Teaching and Learning Indigenous South African Languages
Authors: Mlamli Diko  , Adelheid Bechtold Celliers
Published: September 2024

Whereas South Africa has made significant strides after the official end of colonialism and apartheid in 1994 concerning the advancement of indigenous South African languages, there are observable challenges that demonstrate endurance even in the post-colonial and post-apartheid contexts. In particular, there are enduring challenges in the teaching and learning of these languages within the basic and higher education system. With this view in mind, the aim herein is to explore and discuss four noteworthy challenges that obstruct the optimal teaching and learning of indigenous languages in the South African context. It must be noted that this article concentrates on indigenous South African languages in general, and not specific ones. The objective is to uncover and sensitize the language and education policymakers as well as affected stakeholders such as parents, learners, and students that challenges in the context of language in education exhibit determination, hence the necessity to scholarly revisit them in a bid to solicit reasonable solutions to the conundrum. The four noteworthy challenges, which are discussed in the body of this scholarly discourse, are recognized as a source of discussion. The findings and discussion underline that challenges within the language in education in the South African context are multifaceted. One of these challenges could be pinned on colonial and apartheid legacies that appraised oppressive languages to the detriment of indigenous South African languages and dialects. In fact, the Bantu Education Act of 1953 is implicated in this article as one of the principal drivers of the subjugation of these languages. In the same vein, this article implicates some post-colonial and post-apartheid perceptions towards the subjugation of these vernacular languages. The closing remarks highlight the necessity to recurrently debate challenges of indigenous languages within the educational system.
A novel approach for detecting Pomegranate leaf pathologies using deep learning
Authors: Pushya K D  , Girish C  , Durga Prakash  , Manikantan R
Published: September 2024

Pomegranate cultivation is essential for ensuring global food security, yet it faces significant threats from diseases. This has resulted in significant losses of yield. Integrated disease management strategies are therefore crucial for addressing this problem and include cultural practices, disease resistant varieties and timely application of fungicides. Artificial intelligence (AI), primarily deep learning, has recently made great strides that can help change the landscape on how agricultural diseases are diagnosed. In this study, therefore, we will develop a highly accurate and efficient system for early detection of diseases in pomegranate crops using deep learning algorithms. Using convolutional neural networks (CNNs) along with transfer learning coupled with data augmentation techniques such as rotation, flipping and scaling automate the identification and classification of disorders related to leaves growing on pomegranate plants. Rigorous experimentation and evaluation using performance metrics like accuracy, precision, recall, and F1 score demonstrate the efficacy of the CNN models. The underlying theory behind this is that AI technologies would be able to successfully detect all BLB diseases associated with pomegranates at an accuracy rate of 96.33 percent using Inception v3 CNN model. These results point out that AI technology changes everything about dealing with crop diseases in agriculture while also emphasizing its importance towards global food security efforts. This study not only presents a novel approach to disease detection but also provides practical solutions for farmers to mitigate crop losses and improve yield quality, promoting more sustainable and resilient farming.
Projeto de Extensão “de onde vêm?!”: ações e metodologias ativas no ensino de tecnologia de alimentos
Authors: Gonzaga Maria Glenda da Silva , Manuele dos Santos Viana Paula , Silva de Medeiros Eduardo , Lopes Leão Andrya , Davi Silva de Oliveira Luís , Leonora Meireles Cordeiro Isabelle , Manuele dos Santos Sarmento Letícia , Sayuri Otani Fabrizia
Published: September 2024

O consumo de produtos de origem animal é expressivo, no entanto, muitos consumidores, especialmente os que vivem em centros urbanos, desconhecem a origem desses produtos e os processos pelos quais passam até chegarem às suas mesas. Iniciado em 2016 em Santarém, PA, o projeto "De Onde Vêm?!" objetiva compartilhar com a comunidade, principalmente em áreas urbanas sem ligação direta com a produção agropecuária, o conhecimento sobre a origem dos alimentos, a cadeia produtiva associada e desmistificar fake news acerca dos produtos de origem animal. O projeto encontra-se e desmistificar fake news acerca dos produtos de origem animal. O projeto encontra-se em sua nona edição, e no período de julho de 2023 a junho de 2024, discentes dos cursos de Zootecnia, Agronomia, Biotecnologia e Biologia, com apoio e orientação do corpo docente e técnico da UFOPA, protagonizaram ações de extensão universitária, que foram direcionadas principalmente para o público-alvo: estudantes e professores da educação básica, estudantes de instituições públicas e privadas de ensino superior da região, e idosos participantes de atividades físicas nas Unidades Básicas de Saúde de Santarém, PA. Ao envolver diferentes faixas etárias e níveis educacionais, o projeto não só contribuiu para a formação acadêmica dos estudantes, como também forneceu à comunidade informações valiosas sobre a cadeia produtiva de alimentos, evidenciando o sucesso e a eficácia das ações realizadas através de uma expressiva participação da população.
Measuring Time Scaling Creep in Salt Rocks for Fluid Storage
Authors:   University of Houston, Khan Talha H. , Myers Michael T. ,   University of Houston, Hathon Lori ,   University of Houston, Unomah Gabriel C. ,   University of Houston
Published: September 2024

Salt is an elastoviscoplastic material with low permeability and exhibits time-dependent deformation or creep. Experimental measurements of power law creep behavior in salts help predict the long-term geomechanical behavior of the underground carbon dioxide and hydrogen repositories. Previous geomechanical experiments have focused on the creep axial strain of unconsolidated sands and ductile salt rocks without describing the degree of the creep behavior of radial strain. Time-scaling axial creep has been studied in unconsolidated sands under a uniaxial stress state of constant lateral strain by Dudley et al. (1998). To our knowledge, time-scaling creep of both radial and axial strain has not been investigated in salts. Hence, a comparative testing procedure and analysis method are proposed on twin plugs for different test durations that give a time-independent response. Firstly, the axial and radial strain data of both plugs are shown independent of test duration for salts (time scaling). Secondly, pre- and post-microstructural imaging techniques will visualize and validate resultant compaction strains, crystal dislocation densities, or formation of subgrains for both creep tests. The tests will be conducted on the triaxial testing apparatus in the University of Houston laboratories. The confining pressure and axial stress will be increased in steps, followed by a hold period during which the axial stress is held constant with constant deviatoric stress. Pre- and post-test thin sections, scanning electron microscopy (SEM), and micro-computed tomography (CT) scan data will be obtained to demonstrate the compaction strain mechanisms. The stress-strain curves in both twin salts will show strain hardening. There is a predictable power law relationship between strain (radial and axial) with time. The expected creep behavior observed in the salts of both time duration results from increasing dislocation densities of salt crystals and the associated development of subgrains. The axial and radial strain of the different stress paths normalized for time deformation duration will show similar creep behavior, hence displaying time-scaling creep behavior in salts. The microstructural imaging of both salts of varying deformational durations will show compaction strains and the formation of subgrains within the host salt crystals. The temporal scale invariance and power law relationship exhibited by creep behavior in salt are suggestive of self-organized critical systems or fractals. The experiment provides a means of decoupling the time-dependent behavior from the stress-strain behavior for numerical simulations to predict the long-term geomechanical stability of salts after CO2 or H2 injection.
Incidental Finding of Subacute DeBakey Type II Aortic Dissection with Circular Intimal Tear in a Patient with Severe Aortic Insufficiency During the COVID-19 Pandemic
Authors: Akça Barış , Doğan Melih , Erdil Nevzat
Published: September 2024

We present a case of severe aortic insufficiency diagnosed in the pandemic period with the surgery being postponed due to hygiene concerns and suspicion of COVID-19. One month later the patient’s complaints worsened. Renewed preoperative examinations revealed no difference and no sign of dissection. The suspicion of COVID-19 was eliminated, so immediate aortic valve surgery was performed despite the pandemic. Surprisingly subacute DeBakey type II aortic dissection with complete circular intimal tear came across intraoperatively. Thus, the modified Cabrol procedure was performed successfully. The diagnosis of aortic dissection may be missed, and this rate may increase in natural disasters such as pandemics and earthquakes.
Surgical Treatment of Unusual Anatomy of the Tricuspid Valve in Ebstein’s Anomaly
Authors: Maistriuk Hanna V. , Truba Iaroslav P. , Boyko Serhii M. , Dziuryi Ivan V.
Published: September 2024

Ebstein’s anomaly is a congenital heart disease in which the septal and posterior leaflets of the tricuspid valve are displaced to the apex of the right ventricle, forming its atrialization. In contrast, the anatomical position of the anterior leaflet usually remains normal.
The aim. To present and analyze a case of surgical treatment of Ebstein’s anomaly with a rare anatomy – isolated displacement of the anterior leaflet of the tricuspid valve.
Case report. We present a rare clinical case of isolated displacement of the anterior leaflet of the tricuspid valve into the right ventricular cavity with the formation of a right atrial aneurysm. The diagnosis was made prenatally and confirmed after the birth of the child by echocardiography. Surgical intervention was postponed and successfully performed at the age of six years due to the progression of tricuspid insufficiency and increase in the right atrial aneurysm. We achieved a reduction in the size of the right atrium (diameter 31 mm, volume 25 ml and area 10 cm2) and minimized insufficiency at the tricuspid valve. The total duration of the surgical intervention was 270 minutes. The intra- and postoperative periods were uneventful. The duration of the patient’s stay in the intensive care unit was 4 days. We believe that this pathology of the anterior leaflet of the tricuspid valve should be interpreted as a variant of Ebstein’s anomaly.
Conclusion. Isolated tricuspid valve anterior leaflet displacement with right atrial aneurysm is amenable to surgical correction with good immediate and long-term results.