bluuebunny/crossref_metadata_2025 huggingface dataset:
Head Tumor Segmentation and Detection Based on Resunet
Authors: Deng Yuchuan
Published: November 2024

Deep learning algorithms are designed to mimic the functions of the human brain. These algorithms can simulate the human brain for feature extraction, i.e. neural networks with many hidden layers. This algorithm is being trained and tested using the MRI brain tumor segmentation dataset provided by Kaggle. ResNet50 is used for tumor classification tasks due to its powerful feature extraction capability. Through its deep residual structure, ResNet50 can effectively extract different lesion features and improve classification accuracy. At the same time, ResUNet combines the feature extraction capabilities of ResNet with the segmentation advantages of U-Net, accurately capturing tumor boundaries and achieving high-quality tumor segmentation. For the MRI dataset, the accurate segmentation rate of the model is 91.68%, which provides a certain reference for the medical field. In summary, this study demonstrates the usability of combining ResUNet50 and ResNet in brain tumor detection. In the field of medical image analysis, accurate brain tumor segmentation and classification are crucial for clinical diagnosis and treatment planning, and provide new ideas and methods for future medical image analysis and clinical applications.
Analisis Dampak Sosial Media Terhadap Keriligiusan Peserta Didik (Studi Literatur)
Authors: Oktavia Lidya Fransiska , Refnawati Refnawati , Yovica Alia , Amra Abhanda
Published: November 2024

The digital era marked by technological advancements and the popularity of social media has reshaped the values, beliefs, and spiritual practices held by young people. For students, social media is a complex world. This platform can be a source of spiritual inspiration, but it can also divert their attention to worldly things that are not in accordance with religious values. Therefore, this study aims to analyze existing research on the relationship between social media and student religiosity. The research method used is a literature study. There are several studies related to social media and its impact on student religiosity. The search strategy is carried out systematically by reviewing articles that have been published on Google Scholar. Based on the results of a systematic review of the literature, it was found that there was an impact of social media on the level of religiosity of students because students were negligent in the implementation of religious values in school and they also forgot the religious norms assigned or required to them
Կամրջելով դարերը. Տաղային արվեստի արձագանքները Էդգար Հովհաննիսյանի երկերում
Authors: Միսակյան, Նանե Նանե
Published: November 2024

Տաղային արվեստը հայ հոգևոր երգաստեղծության հիմնարար ճյուղերից մեկն է։ Հայ միջնադարյան տաղերգության նմուշները ոգեշնչման նյութ են հանդիսացել բազմաթիվ հայ կոմպոզիտորների համար ։ Նրանց մեջ առանձնահատուկ տեղ է գրավում Էդգար Հովհաննիսյանը, որը, դիմելով հայ միջնադարյան երաժշտության գանձարանին, կերտել է նոր, յուրատիպ ու թարմ հնչողություն ունեցող երկեր ։ Հոդվածում քննվում են կոմպոզիտորի Առաջին սիմֆոնիան և «Սասունցի Դավիթ » օպերաբալետը, որոնց երաժշտական կերտվածքի համար նա իբրև հիմնանյութ գործածել է Ս. Գրիգոր Նարեկացու «Հաւիկ » և միջնադարյան Անանուն հեղինակի «Ո՞ւր ես, Մայր Իմ» տաղերը ։
Tagh art is one of the fundamental branches of the Armenian sacred songwriting, serving as a source of inspiration for many Armenian composers throughout history. Among them, Edgar Hovhannisyan holds a special place. Drawing upon the treasury of Armenian medieval music, he has created new and unique works characterized by a contemporary sound. This paper is focused on E. Hovhannisyan’s First Symphony and the opera–ballet David of Sassoun. The musical structures of these compositions are based on the taghs “Bird” (Hawik) by St. Grigor Narekatsi, and “Where are Thou, My Mother?” (Ur es, Mayr Im?) by a medieval Anonymous author.
Ս. Ներսես Շնորհալու «Նորահրաշ պսակաւոր» Շարականը Կոմիտասիև Մակար Եկմալյանի խմբերգերում
Authors: Երաժիշտ Դանիել
Published: November 2024

Հոդվածը նվիրված է Ս. Ներսես Շնորհալու «Նորահրաշ պսակաւոր » շարականին և դրա հիման վրա ստեղծված՝ Մակար Եկմալյանի և Կոմիտասի համանուն խմբերգերին ։ Համեմատվում են մոնոդիան բազմաձայնելու տարբեր մոտեցումները՝ ակորդային– հոմոֆոն և պոլիֆոն մեթոդները, կերտվածքները, բազմավեկտոր ձայնատարությունը, վերլուծվում են նշված խմբերգերի ձևը և բովանդակությունը, առանձնացվում են ընդհանրությունները և տարբերությունները ։ Լուսաբանվում են շարականի բանաստեղծական տեքստում տեղի ունեցող ելևէջները և դրանց արտացոլումը երաժշտական բաղադրիչում ։
This paper is dedicated to the chant “Norahraš Psakawor” by St. Nerses Shnorhali (1102–1173), and to the choral songs by Makar Yekmalyan and Komitas which are based on the same chant. The differing approaches towards arranging the monody are compared in the paper, including harmonic–homophonic and polyphonic methods of composition, the texture, and the multi–vectored voice– leading. Besides, the music form and contents of the mentioned choral songs are analyzed, then commonalities and differences are derived. The phrases occurring in the poetic text of the hymn and their reflection on the musical component are clarified.
‘LOVE COVERS A MULTITUDE OF SINS,’ AN EXEGESIS OF 1 PETER 4:8
Authors: Martins Samuel
Published: November 2024

In the first epistle Peter consoles the persecuted Christian by affirming that present suffering sanctifies Christians for the resurrection with Christ. In this framework, 1 Peter 4:8 serves as the scriptural basis to love each other deeply by not disclosing others’ sins as is inevitable. As if Christ’s love that covered sins could erase stigma, the same way believers should forgive, accept, and reintegrate the offenders. It also involves oneness and authenticity in the believer and the unbeliever to counteract evil and to follow Christ’s transformative transforming redemption.
UM OLHAR SOBRE O DIABETES NO CONTEXTO AMAZÔNICO: ENTRE A TEORIA E A PRÁTICA
Authors: Theobald Charlene Viana , Costa Ícaro da Silva , Marques Brenda Araújo , Lima Ana Carolina Araújo , Holanda Bianca de Oliveira , Campos Harrison Stonio , Herculano Elaine de Souza , Brito Diana Cascaes de , Couto Giovana dos Santos , Oliveira Suzane Lima de , Oliveira Cássio Gabriel Barbosa de , França Stephany Martins de Almeida , Evaristo Jucyette da Silva Gomes , Souza Celsa da Silva Moura
Published: November 2024

O diabetes é considerado uma Doença Crônica Não Transmissível (DCNT) pelo Ministério da Saúde, sendo caracterizada pela disfunção do metabolismo da glicose e pela incapacidade do organismo em regular os níveis glicêmicos.Trata-se de uma atividade desenvolvida com fins didáticos e pedagógicos no contexto da disciplina de Saúde Coletiva II, ofertada pelo departamento de Saúde Coletiva, da Faculdade de Medicina da Universidade Federal do Amazonas - UFAM. Partindo desta perspectiva, órgãos e instituições públicas do estado do Amazonas foram visitadas pela equipe, sendo eles: Unidade Básica de Saúde do Japiim, Distrito de Saúde Sul, Policlínica Dr. Djalma Batista e Ambulatório de Estomaterapia do Ambulatório Araújo Lima. Também foram realizadas por meio de livros, teses e monografias, bem como consulta a bases de dados virtuais como Lilacs, Scielo, Revista de Enfermagem e Biblioteca Virtual em Saúde (BVS). Por fim, é importante ressaltar que, apesar de todo o aparato oferecido pelo Sistema Único de Saúde - SUS na rede de atenção às pessoas com diabetes, ainda que com ressalvas, é de suma importância a adesão do paciente ao tratamento e devidos cuidados, a fim de que não haja uma utilização prevenível do sistema em momento não adequado.
LINHA DE CUIDADO DO TRANSTORNO DO ESPECTRO AUTISTA (TEA): UMA ANÁLISE DA REALIDADE AMAZÔNICA
Authors: Porto Isabela Pires , Oliveira Beatriz Souza de , Silva Beatriz Martins da , Pinheiro Louise Gabrielle Olegario de Castro , Lopes Pedro Manoel Souza , Costa Ana Carolina Rodrigues , Silva Gabriela Silva da , Oliveira Heitor Afonso , Amorim Ana Sarah Araújo , Nogueira Levi D’Araújo , Faria Tiago Quereza e Silva , Oliveira Suzane Lima de , Evaristo Jucyette da Silva Gomes , Souza Celsa da Silva Moura
Published: November 2024

As linhas de cuidado do SUS definem um fluxo assistencial padrão ao usuário com base em diferentes necessidades. Neste artigo, discute-se as condições da Linha de Cuidado do Transtorno do Espectro Autista (TEA) em Manaus, destacando suas divergências em relação à teoria. O TEA é um transtorno do neurodesenvolvimento com déficits na comunicação, interação social e comportamentos restritos, repetitivos ou combinados. A OMS estima que uma a cada 160 crianças tenha TEA. Embora o tema esteja em crescente discussão mundialmente, há escassez de evidências sobre o transtorno no Brasil e em Manaus. Este relato de experiência resulta da disciplina de Saúde Coletiva II do curso de Medicina da Universidade Federal do Amazonas (UFAM), a partir das aulas práticas desta, nas quais foram promovidas rodas de conversa e visitas às unidades da linha de cuidado, tanto do SUS propriamente dito, quanto de instituições associadas. Foram abordados: histórico do transtorno, insegurança alimentar e acompanhamento psicopedagógico, fisioterapêutico, nutricional e psiquiátrico. As visitas incluíram uma Unidade de Saúde da Família (USF) e um Centro de Atenção Integral à Criança e ao Adolescente - Especialidades (CAIC+). Além disso, uma organização sem fins lucrativos, a Associação dos Amigos dos Autistas do Amazonas (AMA-AM), e programas vinculados à UFAM, o Programa de Reabilitação Pediátrica (PROPED) e o Programa de Atividades Motoras para Deficientes (PROAMDE). Observou-se escassez de dados epidemiológicos relativos ao TEA, o que dificulta na prática do SUS; além de falta de profissionais e recursos, somados ao descompasso entre os órgãos da linha de cuidado teórica.
ATENÇÃO PRIMÁRIA E A RELAÇÃO COM A LINHA DE CUIDADO DIABETES GESTACIONAL NA CIDADE DE MANAUS: UM RELATO DE EXPERIÊNCIA DOS ALUNOS DA DISCIPLINA DE SAÚDE COLETIVA II
Authors: Venturelle Ana Júlia Lima , Carvalho Ana Luiza Azevedo de , Freitas Elise Garrido Cambra de , Barbosa Giovanna Araujo , Maurício Júlia Leite , Morais Liz da Costa Soares , Maia Lorena da Silva , Aquino Maria Eduarda , Corado Natan Alexandre Cruz , Oliveira Suzane Lima de , Marques Brenda Araújo , França Stephany Martins de Almeida , Evaristo Jucyette da Silva Gomes , Souza Celsa da Silva Moura
Published: November 2024

Os níveis de atenção e assistência à saúde no Brasil são estabelecidos pela Portaria Nº 4.279 de 30 de dezembro de 2012, que estabelece as diretrizes para a organização do Sistema Único de Saúde. Com o objetivo de estruturar o serviço de saúde para os usuários, demonstrar fluxos assistenciais com planejamento terapêutico seguros em diferentes níveis de atenção e estabelecer o caminho assistencial nos diferentes níveis de atenção de acordo com as demandas, foram desenvolvidas as Linhas de Cuidado e implantadas sob a gestão da Atenção Primária em Saúde. Dentre elas, observa-se que a Linha de Cuidado de Diabetes Gestacional como uma linha multidisciplinar capacitada para o pré-natal de alto risco em gestantes com os níveis de glicose no sangue aumentados. Nesse contexto, desejando verificar o funcionamento  de algumas das Unidades de Atenção Primária de Manaus acerca do papel de diagnóstico, acompanhamento e encaminhamento dessa doença, foram realizadas tanto visitas (Clínica da Família Antônio Reis,  Distrito Sul de Saúde  e Maternidade Moura Tapajóz) quanto a rodas de conversa em sala de aula abordando temas como violência obstétrica. Com isso, verifica-se a competência das unidades básicas na pesquisa da diabetes, o que reduz o risco de anomalias congênitas, além de alertar para a necessidade de rastreamento e complicações crônicas da síndrome em mulheres. Entretanto, ainda foi possível observar notadas falhas na organização sistemáticas de Centros de Atendimento em Manaus, ademais, há regiões da cidade que não desfrutam do caminho assistencial nos níveis de atenção.
O USO DE TECNOLOGIAS ASSISTIVAS EM IDOSOS NA PROMOÇÃO DA INDEPENDÊNCIA E A QUALIDADE DE VIDA: REVISÃO INTEGRATIVA DA LITERATURA
Authors: silva Rogério Oliveira da , Lima Thaila Emylle da Silva , Santos Jéssica Lopes dos
Published: November 2024

Justificativa: Este estudo analisa o impacto das Tecnologias Assistivas na promoção da independência e na melhoria da qualidade de vida dos idosos. Diante do envelhecimento crescente da população mundial, investigar alternativas que ajudem os idosos a manter sua autonomia é essencial. Objetivo: Analisar como o uso de tecnologias assistivas em idosos pode promover a independência e melhorar a qualidade de vida. Metodologia: A pesquisa foi uma revisão integrativa da literatura, utilizando as bases de dados LILACS, SciELO, Biblioteca Virtual de Saúde (BVS) e MEDLINE. Resultados: Os resultados mostram que a principal finalidade dos dispositivos assistivos é reduzir a dependência nas atividades diárias, evitar o isolamento social e minimizar as vulnerabilidades associadas ao envelhecimento. Esses dispositivos fomentam a autonomia do idoso e servem como instrumentos para atenuar os efeitos das mudanças fisiológicas, especialmente o declínio cognitivo, que pode resultar em completa dependência. Conclusão: Conclui-se que o uso apropriado das Tecnologias Assistivas fortalece a independência dos idosos e promove uma qualidade de vida aprimorada.
SILICONOMA ASSOCIADO AO USO DE IMPLANTES MAMÁRIOS DE SILICONE
Authors: Queiroz Sarah Leinerh Nogueria , Queiroz Camila Leinerh Nogueria , Moraes Vanessa Regina Maciel Uzan de
Published: November 2024

O Siliconoma é uma complicação em decorrência de um extravasamento de macropartículas e micropartículas de implantes de silicone que podem ocorrer por ruptura ou por bleeding (sangrar). Este por sua vez pode-se apresentar em implantes mamários intactos no qual partículas de silicone podem migrar pela rede linfática, alcançando os linfonodos axilares levando a uma linfadenopatia, podendo gerar uma resposta imunológica. Objetivo: analisar e sintetizar as evidências científicas disponíveis sobre o desenvolvimento de siliconoma associados a implantes mamários de silicone, focando em casos onde as próteses permanecem intactas. Método: Trata-se de uma revisão  de literatura cujas buscas de dados foram realizadas nas plataformas de bases eletrônicas de dados United States National Library of Medicine (PubMed), Scientific Eletronic Library Online (Scielo), National Library of Medicine National Institutes of Health. Resultados: os achados indicam que o siliconoma pode se desenvolver em pacientes com próteses mamárias íntegras, devido ao fenômeno de “bleeding”, no qual micropartículas de silicone transudam sem a ruptura do implante. A linfadenopatia axilar resultante é, geralmente, um achado incidental e raramente causa sintomas significativos. A revisão aponta para a necessidade de diagnósticos mais precisos e a realização de mais estudos sobre a relação entre siliconomas e doenças autoimunes. Conclusão:  o siliconoma pode se desenvolver mesmo com próteses mamárias íntegras, devido ao fenômeno de “bleeding”, embora seja um evento raro. O diagnóstico é desafiador, já que o sangramento de gel não é detectado facilmente por exames convencionais. Apesar de geralmente ser uma complicação benigna.
RELAÇÃO ENTRE ENDOMETRIOSE E INFERTILIDADE FEMININA
Authors: Magalhães Samara Firmino , Costa Ruth Silva Lima da
Published: November 2024

A endometriose é uma doença ginecológica crônica descrita pela presença de tecido endometrial fora da cavidade uterina afetando mulheres em idade reprodutiva. Os principais sintomas incluem dor pélvica intensa. O diagnóstico e manejo requerem uma abordagem multidisciplinar para melhorar a qualidade de vida das pacientes Objetivo: evidenciar a relação entre a endometriose e a infertilidade feminina. Métodos: Trata-se uma revisão narrativa  da literatura, realizada a partir dos artigos disponibilizados nas bases de dados da Scientific Electronic Library Online (ScieELO), Biblioteca Virtual em Saúde (BVS), e National Center for Biotechnology Information (PubMed), publicados nos últimos 10 anos. Resultados:  A endometriose está fortemente associada à infertilidade por uma combinação de fatores anatômicos, inflamatórios e hormonais que prejudicam o funcionamento do sistema reprodutivos tais como  distorções anatômicas, anormalidade endócrinas, distúrbios imunológicos, disfunções ovulatórias, defeitos peritoneais ou de implantação, menstruação retrógrada, resposta inflamatória local gerada pelas células endometriais ectópicas, aderências de tecido fibroso, e estresse oxidativo. Conclusão: A relação entre essa condição e a infertilidade é complexa e vai além da manifestação superficial dos sintomas. Portanto, o diagnóstico precoce é essencial para a preservação da qualidade de vida e da fertilidade feminina.
PROPRIEDADES MECÂNICAS EM LÂMINAS DE COMPÓSITOS COM TECIDOS SINTÉTICOS E HÍBRIDOS À ±45°
Authors: Carlos Glória Maria Leite , Costa Giovanni Barbosa da , Batista Ana Claudia de Melo Caldas
Published: November 2024

Materiais compósitos são considerados de grande importância no cenário das novas tecnologias, pois, de maneira geral, oferecem boas propriedades mecânicas e menor custo em relação aos materiais convencionais. Este trabalho apresenta um estudo sobre as propriedades mecânicas em lâminas de compósitos com tecidos sintéticos (fibra de aramida e fibra de carbono) e tecidos híbridos (fibras de aramida/carbono) orientados à ±45°. Os procedimentos metodológicos realizados neste trabalho usam como base normas relacionadas aos ensaios de tração uniaxial (ASTM D3039) e ensaio de densidade (ASTM D792). Como conclusões, tem-se que, para todas as condições, compósitos híbridos e não híbridos, as amostras exibem módulo de elasticidade característico dos compósitos em sua região linear, além disso, a lâmina de carbono apresentou a maior tensão de projeto (81,46 ± 0,9024) MPa, ruptura (125,61 ± 4,8530) MPa e módulo de elasticidade (9,62 ± 0,4961) GPa, dentre as lâminas ensaiadas. Já o compósito híbrido de aramida/carbono apresentou, por sua vez, valores intermediários de tensão de projeto (60,50 ± 2,4968) MPa e módulo (4,81 ± 0,2109) GPa, representando um ganho de 67% e 48% em relação a lâmina de aramida. Mostrando que, a hibridização teve ganhos significativos em relação a lâmina de aramida, provando sua eficiência e viabilidade.
ÜNİVERSİTE ÖĞRENCİLERİNİN KİŞİLİK ÖZELLİKLERİNİN YAŞAM TATMİNLERİNE OLAN ETKİSİNDE YAŞAM BOYU ÖĞRENMENİN ARACI ROLÜ
Authors: Turan Emine Zehra , Aykan Ebru
Published: November 2024

Üniversite öğrencilerin yaşam tatminleri hayatlarının her alanını etkilemektedir. Üniversite dönemi öğrenciler için yetişkinliğe ilk adımlarını attıkları, iş hayatına hazırlandıkları, kendi değer yargılarını oluşturdukları ve bu süreçte kişilik yapılarının oluştuğu bir dönemi içermektedir. Bu dönemdeki öğrenciler farklı yaşam koşullarıyla karşılaştıklarında farklı tutum ve davranışlar sergilemektedir. Bu durum daha çok kişilik özelliklerindeki farklılıklarla açıklanabilmektedir. Farklı kişilik özelliklerine sahip öğrencilerin genetik, çevresel ve yapısal faktörlerden ne derece etkilendiği, öğrenme biçimindeki farklılıklar, toplumun beklentileri bu beklentilerin gerektirdikleri gibi durumların üniversite öğrencilerinin yaşam tatminlerini ve yaşam boyu öğrenme düzeylerini ne şekilde etkilediği merak edilmekte ve bu yüzden araştırmaya yaşam boyu öğrenme değişkeni dahil edilmiştir. Bu araştırmanın temel amacı, üniversite öğrencilerinin kişilik özelliklerinin yaşam tatminlerine olan etkisinde yaşam boyu öğrenmenin aracı rolünü incelemektir. Araştırmanın evrenini üniversite öğrencileri oluşturmaktadır. Yapılan analizler sonucunda, üniversite öğrencilerinin kişilik özellikleri ile yaşam doyumları ve yaşam boyu öğrenme arasında pozitif yönlü ve anlamlı ilişkilerin olduğu, kişilik özelliğinin yaşam tatmini üzerindeki etkisinde yaşam boyu öğrenmenin tam aracılık rolü bulunduğu tespit edilmiştir.

Anahtar Kelimeler: Kişilik, Yaşam Tatmini, Yaşam Boyu Öğrenme.
Effectiveness of WhatsApp as an academic tutoring tool in the academic performance of university students
Authors: Valero-Ancco Vidnay Noel , Calderon-Quino Katty Maribel , Bustinza-Choquehuanca Sonia Agley
Published: November 2024

The use of WhatsApp has emerged as a crucial tool in the academic field, especially among university students, where its influence on academic performance is a topic of growing interest. This article aims to demonstrate how WhatsApp influences academic performance through academic tutoring in university students. The study sample consisted of 167 university students from three professional programs. Three research instruments were applied: an initial questionnaire, a satisfaction survey, and a grade record. The results reveal that the effective use of WhatsApp in academic tutoring offers advantages such as effective communication between peers and tutor, versatility in sharing files, and carrying out various group activities such as messaging, video calls, and conference calls. However, disadvantages were also evident, such as the distraction the app can cause when students do not manage their time properly or engage in non-academic activities. In conclusion, it is established that the use of WhatsApp in academic tutoring positively influences the academic performance of university students, demonstrating that its integration into educational processes can enhance communication and academic support, which has significant implications for educational practice and the development of more effective teaching strategies.
SIMULATION OF THE CO2, CO, CH4 SORPTION EQUILIBRIUM USING THE DUBININ-ASTAKHOV EQUATION ON NAX ZEOLITE AND ACTIVATED CARBON IN THE PROCESS OF HYDROGEN MIXTURE SEPARATION
Authors:   Tambov State Technical University, DVORETSKY D.S. , DVORETSKY S.I. , AKULININ E.I. , MERONYUK K.I. ,   Tambov State Technical University, USACHEV V.B. ,   JSC Research Institute NPO "Luch"
Published: November 2024

Using CO2, CO, CH4 experimental isotherms, the inverse problem of sorption equilibrium is solved. It was determine the Dubinin-Astakhov isotherm equation coefficients and construct modeling approximating dependencies that allow calculating a continuous field equilibrium components concentration values in the temperature range of 293-333 K and pressures (1-20)×105 Pa of the hydrogen gas mixture separation process. The approximating dependencies coefficients average values are calculated based on three temperature values (at the boundaries of the interval and the average temperature) in the gas mixture operating temperature range. It was estimated the description accuracy of the adsorption equilibrium by a Dubinin-Astakhov isotherm equation modeling dependence in the operating temperature and pressure range on NaX zeolite and SKT-4 activated carbon on the binary mixtures CO2, CO, CH4 and H2 adsorption process efficiency. Reduce the number of experimental isotherms for calculating the Dubinin-Astakhov equation coefficients, it is permissible to use averaged values of coefficients calculated both for the boundaries of the operating temperature range and for the average temperature from the operating temperature range depending on the adsorption process of hydrogen gas mixture components accuracy calculating required. At the same time the accuracy for the corresponding component in adsorbent layer protective time calculating is reduced by no more than 5%. It is shown that there is a need for at least one experimental isotherm obtained in the operating temperature and pressure range to ensure hydrogen gas mixture separation process calculating acceptable accuracy.
DENSITY FUNCTIONAL ANALYSIS OF THE EFFECT OF COMPLEXATION ON THE ANTIOXIDANT ACTIVITY OF CURCUMIN
Authors:   Kazan National Research Technological University, SAFIN D.A. , MASLIY A.N. , KUZNETSOV A.M. ,   Kazan National Research Technological University
Published: November 2024

The reaction pathway of the interaction of curcumin molecule with HO2 radicals has been studied at the density functional theory level using the hybrid PBE0 functional. In order to study the reaction mechanism, transition states were found by a special optimization procedure, which were then checked for compliance with the reaction under study by the procedure of following the internal reaction coordinate IRC. All found transition states corresponded to the reaction under study. Using descent from the transition state structure, the structures of the pre- and post-reaction complexes were determined, which made it possible to determine the activation energy of the reaction. It is shown that this reaction is characterized by a noticeable thermodynamic probability (significantly negative G0 value). This means that when the chemical equilibrium of the reaction is reached, an appreciable amount of the radical quenching product, which is hydrogen peroxide Н2О2, will accumulate in the system. This fact indicates the antioxidant activity of curcumin molecules, although it cannot be concluded from the activation characteristics of the reaction that this reaction is rapid. The interaction of curcumin in aqueous solution with Cu(II) ion leads to the formation of a chelate complex, which exhibits slightly more marked antioxidant activity towards HO2 radicals compared to free curcumin molecules. This is explained by the more negative values of the Gibbs free energy of the curcumin reaction within the complex. From the point of view of reaction kinetics, complexation does not lead to noticeable differences in the values of enthalpy of activation H and Gibbs free energy of activation G
SIXTEEN-NODE SHELL ELEMENT WITH MATRIX STABILIZATION SCHEME
Authors:   Kazan National Research Technological University, SAGDATULLIN M.K. , GUMEROVA KH.S. ,   Kazan National Research Technological University
Published: November 2024

A sixteen-node finite element of a thin-walled shell is designed using a matrix stabilization scheme based on the introduction of the Hellinger-Reisner functional with independent deformation. Initially, the assumed independent deformation is divided into a lower order part and a higher order part. The stiffness matrix corresponding to the lower order assumed deformation is equivalent to the finite element stiffness matrix of the assumed displacement model with a reduced integration scheme. Spurious kinematic modes of the finite element are suppressed by introducing a stabilization matrix associated with a correctly selected set of assumed higher order deformation fields. As an example, a cylindrical shell with given geometric parameters and elasticity characteristics (elastic modulus, Poisson's ratio), loaded with concentrated forces at two opposite points, was considered. The problem considered fixed boundary conditions. Due to the symmetry of the geometry and load, only one octant of the shell was modeled with various finite element meshes, including irregular ones. The table showed the dimensionless deflections of the shell with fixed ends at the point where the concentrated force is applied. Good convergence is observed when the mesh of the finite element model is refined. There is no rigorous analytical solution for the presented case with fixed ends. The computational results show that this finite element can be used to provide reliable solutions for calculating the stress state of thin plates and shells irrespective of the curved geometry of the element, loading method and pinched boundary conditions. The presented element can be used to solve various modelling problems, as well as to test the performance of other shell elements.
KINETICS OF DECOMPOSITION OF MUSCOVITE-STAVROLITE SHALE AND ALUMINIUM HYDROXIDE BY A MIXTURE OF FLUOROSILICIC AND HYDROFLUORIC ACIDS
Authors:   Сhemical, Biological, Radiological, and Nuclear Safety and Security Agency (CBRNSSA), NAST, SATTOROV S.A. , NAIMOV N.A. ,   «Scientific Research Institute of Metallurgy» JSC «Tajik Aluminium Company», MIRSAIDOV U.M. ,   Сhemical, Biological, Radiological, and Nuclear Safety and Security Agency (CBRNSSA), NAST, SUYARIYON K.D. , RUZIEV D.R. ,   Tajik National University, SAFIEV H. ,   «Scientific Research Institute of Metallurgy» JSC «Tajik Aluminium Company»
Published: November 2024

The paper presents the results of the study of kinetic parameters of the process of decomposition of muscovite-stavrolite shale from the deposit "Kurgovad" (Tajikistan) and aluminium hydroxide using a by-product of hydrofluoric acid production - a mixture of fluorosilicic acid (FSA) and hydrofluoric acid in order to obtain amorphous silica and aluminium fluoride. At “TALCo Chemical” Ltd. at maximum capacity of hydrofluoric acid, a mixture consisting of 25 % FSA and 14 % hydrofluoric acid is formed as a by-product. The amount of mixture produced per year is about 4 thousand tonnes. During kinetic calculations, the apparent activation energy of the process of decomposition of muscovite-stavrolite shale from the deposit “Kurgovad” by hydrofluoric acid from the above-mentioned mixture was calculated, the value of which is 39.73 kJ/mol. The activation energy of the decomposition of Al(OH)3 with unreacted H2SiF6 is 37.94 kJ/mol. The results of the performed calculations on determination of activation energies confirm that decomposition of muscovite-stavrolite shale by hydrofluoric acid and aluminium hydroxide by the remaining FSA proceed in transition regions. In addition, the dependence of the logarithm of 1 1 - α on τ and the logarithm of K on the inverse absolute temperature ( 1 Т ) of the aluminium fluoride crystallisation process were studied. According to the results obtained, the activation energy of the aluminium fluoride crystallisation process was found to be 45.86 kJ/mol, thus confirming the process in the kinetic region. In addition, the reaction rate constants and pre-exponential multipliers of the Arrhenius equation were determined on the basis of kinetic calculations of the process of acid decomposition of muscovite-stavrolite shale in the first stage, aluminium hydroxide in the second stage and crystallisation of the formed aluminium fluoride solution.
THE INFLUENCE OF HYDROGEN-CONTAINING GAS CIRCULATION RATIO ON THE PROCESS OF VACUUM GAS OIL HYDROCRACKING
Authors:   National Research Tomsk Polytechnic University, BELINSKAYA N.S. , CHERNYSHOV M.N. ,   National Research Tomsk Polytechnic University
Published: November 2024

The process of vacuum gas oil hydrocracking is a secondary process of deep oil refining and allows the processing of low-value heavy oil fractions into high-quality components of motor fuels. In industry, the hydrocracking process is implemented in large-scale reactors and is characterized by a large loading volume of catalysts, which are very expensive and undergo a gradual loss of activity during operation, which occurs mainly due to the accumulation of coke on their surfaces. Therefore, research aimed at identifying ways to reduce the rate of coke formation and maintain the activity of catalysts is relevant from both a technological and economic point of view. In this work, using a mathematical model of the vacuum gas oil hydrocracking process, which takes into account catalyst deactivation, the influence of the hydrogen-containing gas circulation ratio on the rate of coke accumulation on the catalyst and the activity of the catalyst were estimated. It was shown that an increase in the circulation ratio of hydrogen-containing gas makes it possible to reduce the rates of coke formation and loss of catalyst activity; however, carrying out the process with a high circulation ratio of hydrogen-containing gas is impractical, since the process temperature decreases, which adversely affects the degree of feedstock conversion and leads to an increase in operating costs for hydrogen production and pumping. The optimal hydrogen-containing gas circulation ratio was determined, ensuring the lowest rates of coke formation and loss of catalyst activity, as well as the process temperature at which the required degree of feedstock conversion is achieved. The use of a mathematical model to determine the optimal circulation ratio of hydrogen-containing gas when changing the productivity of the unit makes it possible to reduce the cost of hydrogen and extend the service life of the catalyst.
METHODS FOR SYNTHESIS OF CHLORINE DERIVATIVES OF PHTHAL ANHYDRIDE
Authors:   Kazan National Research Technological University, BAGAVEEV A.M. , MUSIN L.I. ,   R&D Center “AkhmadullinScientech", ZIMINA E.E. , GIZYATULLOV R.N. ,   Kazan National Research Technological University, AKHMADULLIN R.M. ,   R&D Center “AkhmadullinScientech"
Published: November 2024

The development of the chemical industry causes the need for a large number of organic synthesis products, which in turn necessitates the search for methods of production of organic reagents. One of the most common intermediates in the synthesis process are halogen derivatives of organic compounds, namely chlorine derivatives. The rapidly growing market for dyes, polymers and agricultural products creates a need for large quantities of chlorinated derivatives of phthalic anhydride. This review discusses various methods for obtaining chlorinated derivatives of phthalic anhydride in the gas phase, solution and melt. In particular, the most successful applications of chlorinated derivatives of phthalic anhydride are the synthesis of metal-containing chlorophthalocyanines, which exhibit high catalytic properties in the oxidation of organosulfur compounds and are dyes. Such derivatives as cobalt dichloro-disulfophthalocyanines are known, which are used in the oil refining industry as an effective catalyst for the oxidation of thiols to disulfides. Chlorinated phthalocyanine dyes have high heat and solar resistance, resistance to acids and solvents. Used in the production of paints, textiles, printing and plastics. Analysis of literature data shows that the synthesis of chlorinated derivatives of phthalic anhydride is a difficult chemical task that requires the use of specific reagents and harsh synthesis conditions. The review summarises and shows the conditions of chlorination reactions of phthalic anhydride, the composition of reaction products and characteristic physicochemical features of various chlorine derivatives of phthalic anhydride, the disadvantages and advantages of methods for the preparation of chlorophthalic anhydride. On the basis of literature sources, the dependence of the composition of the mixture of products of chlorination of phthalic anhydride on the reaction time is plotted.
COORDINATIVE BINDING IN THE SYNTHESIS OF POLYOXYETHYLENE GLYCOL-SUBSTITUTED SILICA PARTICLES
Authors:   Kazan National Research Technological University, LI E.D. , FAYZULINA Z.Z. ,   PolyLab Kazan Scientific Center, KOS Sibur, DAVLETBAEVA A.R. , SAFIULLIN K.R. , SAZONOV O.O. ,   Kazan National Research Technological University, DAVLETBAEV R.S. ,   Kazan State Power Engineering University
Published: November 2024

One of the main methods for producing modified silica particles is based on sol-gel synthesis processes traditionally used to produce silica gels, xerogels and aerogels. this method includes the stage of hydrolysis of alkoxysilanes with the formation of a sol (colloidal system), followed by the process of condensation of silanol groups and conversion of the sol to a gel. due to the high probability of the formation of cross-linked topological structures during sol-gel processes, it is challenging to use this method to obtain unrelated individual organo-substituted silica particles (ASiP). In this regard, the solution to the problem of producing ASiP and si ng alkoxysilanes as a central reagent is based on the selection of suitable catalysts. alkoxysilanes usually react slowly with water, but the reaction process can be accelerated using acidic or basic catalysts. for example, the gelation time of tetraethoxysilane (TEOS) can increase a hundredfold when using HCl. The use of an alkaline catalyst, on the contrary, leads to a noticeable decrease in the rate of TEOS hydrolysis. In this work, CuCl2was used to carry out the gel-sol process involving polyoxyethylene glycol (PEG) and TEOS and synthesize branch-substituted PEG Silicas (ASiP-Cu). A comparative study of the particle size distribution of PEG and ASiP-Cu was carried out. An increase in the CuCl2 content during the production of silicas substituted with polyoxyethylene branches from 0.01 wt.% to 0.5 wt.% leads to a decrease in the Size of the resulting particles, reaching a minimum value of 200 nm at 0.5 wt.% CuCl2. Analysis of the results of measuring the size of ASiP-Cu particles and electronic spectra allows us to conclude that CuCl2 at 0.01 wt.% catalyzes the gel-sol process leading to the formation of ASiP-Cu, but at such a low content copper chloride does not enter into complex-forming interactions with polyoxyethylene glycol, which is an integral part of the ASiP-Cu structure. An increase in the copper chloride content to 0.1 wt.% entails a significant change in the structural organization of ASiP-Cu. In this case, copper chloride coordinately binds to open-chain crown ether analogues by trapping Cu(II) ions into the crown cavity created by the polyoxyethylene glycol branches of the ASiP-Cu particles.
ABOUT THE NATURE OF DESTRUCTION OF ADHESIVE JOINTS OF MALEINIZED POLYETHYLENE WITH STEEL AND EPOXY PRIMER IN THREE- AND TWO-LAYER PROTECTIVE COATINGS STRUCTURES
Authors:   LLC «Sibur», TUTOV S.V. , VERNIGOROV K.B. ,   LLC «Sibur PolyLab», ABZALDINOV KH.S. , KAZAKOV YU.M. , STOYANOV O.V. ,   Kazan National Research Technological University
Published: November 2024

Establishing a correlation between the nature of destruction and the strength of an adhesive joint has always aroused interest among both domestic and foreign researchers. Analysis of a number of publications suggests that such a dependence clearly exists, especially in simple systems that include adhesives of simple composition, substrates without pre-treatment and the absence of auxiliary materials that improve adhesion, for example, primers. As for complex systems with a large array of simultaneously analyzed experimental data, dependencies similar to those described above have not been identified, perhaps because adhesive materials have increased deformation-strength characteristics (low-density polyethylene (HDPE)) and adhesive-active functional groups (grafted maleic anhydride molecules). In recent years, maleinated HDPE and various compositions based on it have become one of the effective adhesives for protecting pipes from corrosion. Based on this, an undoubtedly urgent task is to assess not only the adhesive strength of such materials, but also the nature of destruction of the adhesive joint, as well as to identify the dependence of adhesive properties on the physical and mechanical properties of the coating material. In order to establish patterns between the nature of destruction of adhesive joints and adhesive indicators, an analysis of the physical, mechanical and adhesive properties, as well as the type of peeling of compositions based on maleinized HDPE was carried out. It is shown that there is no relationship between the deformation-strength properties, the nature of the destruction of the adhesive joint and the adhesive strength during peeling, which is explained by the large array of analyzed experimental data of adhesives that differ from each other in structure, properties and technological conditions of application, which should determine the features in the relationship between the work of adhesion and work of adhesive deformation during adhesion tests. This is whatmainly determines the natureof destruction.
DROPLET SIZE DISTRIBUTION IN ROTATING DROPLET LAYER OF VORTEX SEPARATION DEVICE
Authors:   Kazan National Research Technological University, NIKOLAEV A.N. , DMITRIEVA O.S. , KHARKOV V.V. ,   Kazan National Research Technological University
Published: November 2024

In order for the extracted natural gas to meet the regulatory requirements imposed on it, it must be cleaned of the liquid phase before being supplied to the transport pipeline. There are numerous technical methods to achieve the separation of gas and liquid - gravitational, inertial, filtration, and centrifugal separation. Using vortex effects will ensure the highest efficiency of the separation of dispersed particles. The aim of this work is to determine the main factors influencing the dispersed composition of droplets in a rotating droplet layer of a separator with a tangent swirler. The experimental analysis of the dispersion of the liquid phase was performed using a photographic method in a wide range of flow rates. It was found that the breaking of the liquid occurs almost instantly, and secondary breaking of droplets was not observed. The dispersed composition of the droplets was determined on the basis of the measurement of droplet diameter. A method for determining the dispersed composition of droplets in a layer is proposed. The average particle size in a rotating droplet layer of a vortex device is obtained with a tangent blade swirler of the gas flow as a function of surface tension. The frequency distribution of droplet size in vortex devices with the tangent swirler obtained for the air-water system is presented. The frequency distribution of the dispersed phase in the rotating droplet layer of a vortex-type device depends weakly on the operating conditions and is mainly due to the impact of liquid droplets with swirler blades. When the liquid is broken down, sufficiently large droplets are obtained, the complete separation of which in a vortex separator with the tangent swirl is beyond doubt. The average diameter of the droplets slightly depends on the change in the device's load on the liquid.
SQL BI Optimization Strategies in Finance and Banking
Authors: Shiramshetty Sai Krishna
Published: November 2024

To this end, this paper examines the best practice in making the finance and banking industry SQL BI more efficient and effective in terms of query execution and real-time analysis. Techniques such as Indexing, partitioning, query rewriting, parallel processing, in memory tables are explained practical to large financial data sets. These strategies were identified to enhance techniques such as transaction monitoring, customer analysis, financial reporting, and risk management since their execution duration is time-consuming. The paper will also focus on the role of the optimized SQL queries in the decision-making process and the issues, seen when seeking constant performance in financially volatile demonstrative systems.
Labeled Array Distance Metric for Measuring Image Segmentation Quality
Authors: Berijanian Maryam , Gensterblum Katrina , Mutlu Doruk Alp , Reagan Katelyn , Hart Andrew , Colbry Dirk
Published: November 2024

This work introduces two new distance metrics for comparing labeled arrays, which are common outputs of image segmentation algorithms. Each pixel in an image is assigned a label, with binary segmentation providing only two labels ('foreground' and 'background'). These can be represented by a simple binary matrix and compared using pixel differences. However, many segmentation algorithms output multiple regions in a labeled array. We propose two distance metrics, named LAD and MADLAD, that calculate the distance between two labeled images. By doing so, the accuracy of different image segmentation algorithms can be evaluated by measuring their outputs against a 'ground truth' labeling. Both proposed metrics, operating with a complexity of O(N) for images with N pixels, are designed to quickly identify similar labeled arrays, even when different labeling methods are used. Comparisons are made between images labeled manually and those labeled by segmentation algorithms. This evaluation is crucial when searching through a space of segmentation algorithms and their hyperparameters via a genetic algorithm to identify the optimal solution for automated segmentation, which is the goal in our lab, SEE-Insight. By measuring the distance from the ground truth, these metrics help determine which algorithm provides the most accurate segmentation.
Pseudomonas aeruginosa sepsis in a neonate Franciscana dolphin (Pontoporia blainvillei): clinical approach and laboratory findings
Authors: Antonelli Marzia , Rocha Ribas Mateus , Meurer Rafael , Sandri Sandro , Kasuko Palmeiro Jussara , Cristine Marques Sincero Thaís , Kiyomi Miyaji Kolesnikovas Cristiane
Published: November 2024

A neonate (4,2 kg and 71 cm total body length) female Franciscana dolphin, Pontoporia blainvillei, was found stranded alive on a beach in Santa Catarina, Southern Brazil, with respiratory signs (dyspnea, crackles during thoracic auscultation and changes in buoyancy) suggestive of pneumonia. Hand-rearing and rehabilitation efforts were unsuccessful, and the neonate died three days after it was rescued. Postmortem investigation was conducted using diagnostic imaging techniques, such as endoscopy and computed tomography. A complete necropsy and histopathology were performed, revealing bronchopneumonia as well as neutrophilic and discrete otitis media. A pure Pseudomonas aeruginosa culture was obtained from the blowhole, bronchoalveolar lavage, and blood using the API NE System. Our results indicate the cause of death to be related to bacterial sepsis. Further understanding of the main causes of death of Franciscana dolphin calves is warranted for conserving this threatened and understudied species.
Keywords: bacterial septicemia, cetacean, otitis, pneumonia, Pseudomonas aeruginosa, rehabilitation, stranding event
Monitoreo del comportamiento del consumidor digital, mediante datos extraídos con un Eye-Tracking
Authors: Villaprado Ortiz Yenifer Lisseth , Vaca-Cárdenas Leticia
Published: November 2024

Las compras en línea han revolucionado la manera de ofrecer un producto; por lo tanto, conocer el comportamiento del consumidor es muy importante para los comercios. Los datos serecaban de diversas fuentes; como las redes sociales, sitios web y dispositivos móviles para comprender cómo interactúan los usuarios con los productos y servicios en línea. El objetivo de esta investigación fue monitorear el comportamiento del consumidor digital a través de un Eye-Tracking. Se realizó una revisión bibliográfica sobre los algoritmos y las métricas más utilizadas condispositivos de seguimiento ocular. Para determinar la conducta del usuario digital se ejecutaron pruebas de la experiencia y satisfacciones del usuario, con 40 participantes de la Universidad Técnica de Manabí ubicada en la ciudad de Portoviejo-Ecuador, con los sitios web (Amazon yBooking) plataformas de comercio electrónico altamente usadas a nivel mundial, de las cuales se escogieron once interfaces que fueron valoradas por los usuarios. Los resultados mostraron que lasmétricas (Fijación y Sacadas) seleccionadas fueron útiles para evaluar el comportamiento de los consumidores digitales, puesto que la primera, por ejemplo, da a conocer el tiempo que el cliente sostuvo la mirada en un área u objeto en el sitio en cuestión, por otra parte la sacadas son los movimientos voluntarios o involuntarios desde un punto a otro en una interfaz; determinando que hay zonas(encabezados) que visiblemente pasan desapercibidas por el usuario en su primerainteracción con la plataforma de ventas. En conclusión, el análisis de las Áreas de Interés (AOI),ofrecen datos precisos con los que se pueden tomar decisiones estratégicas informadas paramejorar el diseño de los sitios web de comercialización para incrementar las ventas.
Análisis exploratorio y visualización de datos de color de capa en caballos peruanos de paso
Authors: Zambrano-Barre Julexi , Morales-Carrillo Jessica , Cedeño-Valarezo Luis , Larrea Izurieta Carlos
Published: November 2024

Esta investigación presenta un estudio exhaustivo sobre los patrones genéticos que determinan el color del pelaje de caballos. Se utilizó la metodología CRISP-DM (Cross Industry Standard Process for Data Mining), el estudio se llevó a cabo en varias fases, desde la comprensión del problema hasta el despliegue de los resultados. Los datos analizados provienen de la Asociación Nacional Ecuatoriana de Criadores y Propietarios de Caballo de Paso (A.N.E.C.P.C.P.), abarcando registros desde 1933 hasta 2020, aunque para el análisis de cruce de pelajes se filtraron los datos desde 1985 hasta 2020 lo cual redujo la data a 6131 registros. Los resultados obtenidos indican predominancia de pelajes ALAZÁN y CASTAÑO, en comparación con otros colores menos frecuentes, indica una fuerte influencia de los genes de Extension (E) y Agouti (A), que determinan la mayoría de los colores observados de la data analizada.