bluuebunny/crossref_metadata_2025 huggingface dataset:
Dating Anxiety and Loneliness in Online Dating: The Moderating Effect of Gender
Authors: Rinaldi Martaria Rizky , Azzahra Octla Fiera Sarah , Hardika Jelang
Published: October 2024

In the digital age, online dating applications have revolutionized the way young adults form romantic connections, providing both opportunities and challenges. Understanding the psychological impacts of these platforms is crucial. Young adults, while navigating romantic pursuits and various developmental challenges, are susceptible to feelings of loneliness. Dating anxiety is a significant factor that can exacerbate loneliness within this demographic. Moreover, gender differences may influence individuals' experiences in dating situations. This research aims to explore the relationship between dating anxiety and loneliness among users of dating applications and to examine the role of gender as a moderating variable in this relationship. The study employs a quantitative correlational approach, incorporating demographic data and two scales: the Dating Anxiety Scale and the UCLA Loneliness Scale 3. The research participants consist of 250 early adults aged 20-34 who actively use online dating applications. Data analysis involves descriptive analysis and moderation analysis using the Jamovi software. The research findings indicate a significant direct relationship between dating anxiety and loneliness (p less than 0.001). Furthermore, gender was found to have no significant impact on loneliness (p more than 0.05), and the interaction between dating anxiety and gender was not significant (p more than 0.05). This suggests a uniform impact among both genders in the relationship between dating anxiety and loneliness. The study highlights the complex dynamics influencing loneliness among online dating application users. The findings enhance theoretical understanding of how dating anxiety relates to loneliness. Practically, these insights can help developers create features that reduce anxiety and loneliness. Future research should identify other factors influencing these dynamics to further enrich theoretical and practical knowledge in this field.
A categoria analítica gênero e movimentos feministas
Authors: Cortes Gisele Rocha
Published: October 2024

Este artigo objetiva colaborar para a tematização da categoria analítica “gênero” na área da Ciência da Informação (CI), focando na origem do conceito gênero e sua imbricação com os movimentos feministas, por meio de uma recuperação de sua origem no âmbito das Ciência Humanas e Sociais. Quanto ao procedimento metodológico, trata-se de uma pesquisa básica, de caráter exploratório-descritivo, com delineamento bibliográfico. A revisão de literatura foi dinamizada com a escolha de estudos que versam sobre a categoria “gênero” e sua origem, considerando a interface com a ação dos movimentos feministas. Para localizar os artigos que abordam a temática gênero na CI, utilizou-se a Base de Dados em Ciência da Informação (BRAPCI). Constata-se que ampliar o escopo de diálogos da categoria gênero na CI, Arquivologia e Biblioteconomia potenciará o aprofundamento das ações de organização, gestão, preservação, disseminação da informação para o acesso, circulação, apropriação e produção de conhecimentos na direção de uma cultura dos direitos humanos.
Influence of Teachers’ Experience in Information Communication Technology and Students’ Academic Performance in Mathematics in Public Secondary Schools of Rwanda: A Case of Kayonza District
Authors: Damien Gatera Bizimana , Faustin Mugiraneza
Published: October 2024

The study evaluated the impact of teachers' ICT experience on students' math performance in public secondary schools in Kayonza District, Rwanda. Involving 259 participants (223 teachers and 36 head teachers), data were gathered through questionnaires, interviews, and observations, and analyzed using SPSS Version 20.0. Findings revealed that 83.5% of respondents strongly agreed that teachers skilled in MS Excel, 85.9% in PowerPoint, and 83.9% in preparing teaching materials with ICT tools positively influenced students' performance. Additionally, 82.3% noted that teachers trained in exam preparation with ICT tools demonstrated their ICT experience. Improved student outcomes were reported, with 79.4% noting better numeracy, 80.2% improved grades, and 78.3% enhanced skills in experimenting with MS Excel. A significant positive correlation was found between teachers' ICT expertise and students' math performance. The study suggests that proficiency in ICT tools enhances students' academic performance. The Ministry of Education should support ICT integration to boost academic achievement, with superintendents and head teachers optimizing ICT training and lab usage. Teachers should share ICT skills to improve instruction and student outcomes. Future research should investigate the broader effects of ICT in education on academic achievement in mathematics.
Spectroscopic Analysis of Chrysotile Asbestos and its Environmental Resistance in Asbestos Cement Waste Products
Authors: Zoltán Macher Gergely , Károly Fanni , Teh Boon Sung Christopher , Beke Dóra , Torma András , Gergely Szilveszter
Published: October 2024

Most asbestos-related studies have focused on asbestos exposure risks, their associated health implications, and waste management issues. Our research introduced a unique perspective that has rarely been explored: the impact of environmental factors on asbestos cement products. The novelty of the study is that, in contrast to previous research, in addition to determining the material quality of asbestos, it analyses the trace materials, additives and the emissive nature of chrysotile fibers. This study aims to identify the chrysotile-asbestos content in three common asbestos cement products found in Hungary, with regard to the release of their fibers upon exposure to the environment and to identify trace elements that could be used to identify the origin and function of each of these products. Our analyses revealed the presence of chrysotile in each tested sample, with spectral matches ranging from 59.6% to 86.7%. Asbestos cement products exposed to various environmental influences for long periods showed a greater chrysotile emission capacity than those unexposed or hermetically sealed ones. Additionally, we established that all asbestos cement products contained glass fibers, with an average spectral match of 62.1%. We further identified polysilicate in the materials with an average spectral match of 66.0%, as it was included in asbestos cement products to enhance their heat resistance. Our results pave the way for a new methodology for assessing asbestos cement products with regard to the implementation of their trace element level assessments.
Isolation and Screening of Indigenous Filamentous Fungi Producing Ligninolytic, Cellulolytic and Hemicellulolytic Enzymes from Decomposed Oil Palm Frond
Authors: Nicholas Ahmad Fariz , Abu Hassim Hasliza , Mohd Zainudin Mohd Huzairi , Zakaria Zunita , Yusof Mohd Termizi , Md Nayan Mohd Nazri , Mohd Azmi Amirul Faiz
Published: October 2024

Oil palm frond (OPF) is a palm oil plantation by-product commonly used in animal feeding in Malaysia. The large production, availability, and nutrient content make OPF the best candidate for utilization as animal feed. However, OPF contains high lignin bonds to cellulose and hemicellulose that further limit the digestibility of rumen microbes to produce volatile fatty acids as an energy source for ruminants. This study aims to identify and determine the enzyme activity (ligninolytic, cellulolytic, and hemicellulolytic) of enzymes extracted from filamentous fungi in the pre-treatment of OPF using the solid-state fermentation (SSF) technique. The enzyme extracted from SSF was determined by its enzyme activity (laccase, lignin peroxidase, manganese peroxidase, carboxymethylcellulose, avicelase, and xylanase). Eight fungi were successfully identified to produce enzymes determined in this experiment. Phanerina mellea showed the highest average ligninolytic enzyme activity with a value of 0.37 U/mL and an average cellulolytic + hemicellulolytic of 0.18 U/mL. In this experiment, P. mellea was the most desired fungi for the pre-treatment of OPF. The optimum ligninolytic enzyme production time of OPF pre-treatment is 10 days of SSF.
Classroom work with literature in basic literacy and second language education for adults
Authors: Norlund Shaswar Annika
Published: October 2024

This article examines classroom work with literature in the Swedish for Immigrants (SFI) programme in which adult migrants study Swedish at a basic level. The participants were a teacher and a group of students with limited previous education. The study explores practices that the participants applied during classroom work with an easy-to-read novel. The theoretical and analytical framework includes the four resources model, transactional theory and the concepts of translanguaging and embodied literacy practices. Data for the study were collected in a large action research and linguistic ethnography project by means of classroom observations and focus group conversations with teachers. Findings show that decoding and meaning-making practices were most prominent, while text-using and text-analysing practices were scarcer. Aesthetic reading and efferent reading were in different ways integrated with the different families of practice. Aesthetic reading was connected to multimodal aspects and embodied literacy practices. Efferent reading was found at many levels in the reading and was interconnected with all families of practice. Translanguaging practices often intersected with meaning-making practices.
INFÂNCIA E MATURIDADE DO CONCEITO DE FUNÇÃO
Authors: Silva Circe Mary Silva da
Published: October 2024

O objetivo deste estudo é historicizar e problematizar as diferentes definições do conceito de função formuladas por matemáticos e autores de livros didáticos do século XVIII até o século XX, a partir da primeira delas, proposta por Johann Bernoulli, passando pela definição formalista do grupo Bourbaki. O método utilizado foi o bibliográfico-analítico, com a análise de dados apoiada no modelo das estruturas semióticas, desenvolvido por Richard (2004). Os documentos selecionados e analisados são recortes de obras originais de matemáticos, livros e artigos de história da matemática. A partir das unidades significantes encontradas nas definições, foram identificadas as seguintes categorias: relação entre quantidades variáveis; relação de dependência; relação com domínio ampliado; relação entre conjuntos. Concluiu-se que a definição do conceito de função transformou-se, de uma formulação intuitiva e empírica, em uma formulação abstrata e extremamente formalizada.
CARDANO SOBRE A REGRA DOS SINAIS NA ALIZA
Authors: Fossa John A.
Published: October 2024

Apresenta-se no presente trabalho uma análise minuciosa do Capítulo XXII do tratado De regula aliza libellus de Girolamo Cardano, onde consta a sua reformulação e putativa demonstração da regra dos sinais. Mostra-se que, embora seu resultado é pontualmente interessante, é globalmente inconsistente, sendo a raiz da invalidez do argumento centrada na atribuição de valores negativos a comprimentos e áreas. Mostra-se também como o seu argumento depende de dois princípios gerais extra-matemáticos.
CONCEITOS ARITMÉTICOS, GEOMÉTRICOS E TRIGONOMÉTRICOS NO COMPASSO DE GALILEU
Authors: Mendes Iran Abreu
Published: October 2024

Este artigo é resultado de uma investigação histórica sobre o livro Operações no compasso geométrico e militar de Galileu Galilei, publicado em 1606, com o objetivo de identificar possibilidades de interconexões que envolvam temas como aritmética, geometria e trigonometria plana, a partir da interpretação do livro. A pesquisa bibliográfica fundamentou-se em uma análise histórico-epistemológica exploratória e interpretativa de conteúdos expressos em publicações no passado que caracterizam a história da ciência, com base na interpretação como operação metódica de pesquisa historiográfica em busca de intersubjetivações a partir da exploração de fontes históricas. Os resultados do estudo mostraram que as experiências do passado contidas no livro, esclarecem minhas conjecturas estabelecidas internamente no decorrer do estudo. Assim, foi possível compreender que os fatos científicos estabelecidos no passado, presentes nas fontes consultadas, podem ser adaptados à formulação de exercícios e práticas investigativas que envolvam conceitos matemáticos extraídos das operações tratadas por Galileu no seu livro.
Warszawa jako miejsce zamieszkania w opinii nieheteronormatywnych mieszkańców
Authors: Dudek-Mańkowska Sylwia , Zapert Adrian
Published: October 2024

The aim of the article is to identify the residential preferences of non-heteronormative individuals living in Warsaw and to determine the factors that are most important to this group of residents when choosing a place to live. Understanding these preferences can help in better shaping the city’s housing and spatial policies, supporting inclusivity and equality for all its residents. To achieve this goal, a survey was conducted among LGBT+ individuals in Warsaw between March 1 and April 30, 2020, with responses received from 100 participants. The results of the study reveal the complexity of residential decisions for this group, which are shaped by a variety of factors. LGBT+ individuals choose their places of residence not only based on pragmatic aspects but also in search of environments where they can feel accepted and safe. The study found general satisfaction with living in Warsaw and identified central districts as the most LGBT+ friendly areas.
Parki dla psów w Warszawie – przestrzenie integracji społecznej czy subtelnej izolacji?
Authors: Dudek-Mańkowska Sylwia
Published: October 2024

Modern metropolises, such as Warsaw, are dynamically transforming their urban spaces to meet the evolving needs of their residents, both human and animal. One manifestation of these changes is the development of infrastructure dedicated to pets, including dog parks. The aim of this article is to analyze the distribution, accessibility, and functions of dog parks in Warsaw, as well as to assess their role in social integration and potential isolation of users. The field study included the inventory and mapping of 16 parks, as well as in-depth interviews with their users. The results showed that dog parks play a crucial role in the urban ecosystem, contributing to the building of social bonds, although they may be perceived as exclusionary spaces by those who prefer to walk their dogs freely. The article provides valuable insights into the development of pet-friendly urban infrastructure, emphasizing the importance of considering user feedback in the planning and modernization of these spaces.
Tratamiento de Habilidades Socioemocionales en alumnos de educación primaria en México durante la pospandemia
Authors: Jiménez Jiménez Ma. Consuelo
Published: October 2024

La pandemia por COVID-19 desencadenó una serie de eventos que han impactado personal y socialmente desde el año 2020 y hasta la fecha en diversos ámbitos, uno de ellos es el ámbito educativo. En México, el confinamiento dictado por las autoridades sanitarias y educativas implicó un aislamiento de los alumnos en sus hogares, limitando el contacto físico con compañeros de clase y con sus profesores, lo cual, luego de dos ciclos escolares (2019-2020, y 2020-2021), representó grandes dificultades durante el regreso a las aulas a nivel de convivencia grupal, trabajo colaborativo y rendimiento académico, entre otros aspectos. El presente estudio tuvo por objetivo diseñar una estrategia pedagógica orientada al fortalecimiento de las habilidades socioemocionales de alumnos de educación primaria. A fin dar cumplimiento al objetivo principal de la investigación, se trabajó desde una metodología cualitativa con enfoque etnográfico, cuya muestra estuvo conformada por 14 docentes y 41 alumnos de 7 escuelas primarias situadas en diferentes estados del país. Los resultados indican que la implementación de una estrategia pedagógica fundamentada en la educación emocional contribuye a la mejora de la convivencia grupal, el trabajo colaborativo y el rendimiento académico de los estudiantes. Estos datos se consideran de relevancia en un contexto como el actual, en el que la incertidumbre sobre los sucesos que ocurren y la inmediatez con la que se deben afrontar se han vuelto referentes para la actuación cotidiana de todos los seres humanos, pues solo de esta forma es posible la adaptación progresiva al cambio.
Identificando tendencias y desafíos en la educación agrícola basada en competencias: Una revisión de literatura 2019 - 2024
Authors: Pile Edwin , Chang Andres
Published: October 2024

La revisión se centra en la educación agrícola basada en competencias en América Latina, analizando su evolución frente a desafíos como la globalización, el cambio climático y la escasez de profesionales calificados. Se destaca la tic desconexión entre la formación educativa y las necesidades del mercado laboral, lo que ha generado problemas de desempleo e informalidad en el sector agrícola.
A través de una exhaustiva revisión de la literatura académica entre 2019 y 2024, se identifican prácticas exitosas que integran la tecnología y metodologías innovadoras, como el aprendizaje híbrido. Estos enfoques no solo mejoran la participación estudiantil, sino que también aumentan la empleabilidad en áreas rurales. Las competencias clave para los futuros profesionales incluyen habilidades técnicas, digitales y transversales, como la resolución de problemas y el trabajo en equipo.
Se enfatiza la importancia de fomentar una educación inclusiva y sostenible que esté alineada con las realidades locales, sugiriendo estrategias para mejorar la educación agrícola, como la actualización de los contenidos curriculares y el uso de tecnologías emergentes.
De esta forma, se concluye que es crucial transformar la educación agrícola en América Latina para adaptarse a las demandas contemporáneas, promoviendo una formación que no solo se enfoque en la empleabilidad, sino que también impulse la sostenibilidad y la equidad social. Esta transformación es esencial para preparar a los estudiantes en un entorno en constante cambio y asegurar su éxito en el mercado laboral.
Perspectives of Experts in the Selection of Contents for a Course of Differential Equations in Engineering
Authors: Díaz Palencia José Luis
Published: October 2024

This study investigates the teaching of Differential Equations in engineering education, focusing on expert opinions from diverse institutional backgrounds. The primary objectives were to understand expert perspectives on essential course content, justify their content choices, measure institutional gaps, and highlight the range of professional profiles. Through qualitative interviews with nine experts from academia and industry, we explored their views on the integration of Differential Equations in engineering curricula. The findings reveal a consensus on the importance of basic concepts to support physical models. Notably, experts highlighted variational calculus and energy representations as critical yet underrepresented areas in Differential Equations courses, essential for modeling complex, nonlinear problems. The study also states on the growing importance of computational methods and software in engineering education, advocating for an integrated approach aligning theoretical concepts with real-world applications. The expert opinions revealed a significant institutional influence on content perception, demonstrating a gap between traditional theoretical focus and modern, application-oriented approaches. The study suggests a need for curricular innovation in differential equations education, emphasizing practical applications and computational methods to bridge this gap between the two institutions considered in which the experts are adhered to.
A Bibliometric Analysis of Publications on University-Industry Collaboration Using VOSviewer and R-biblioshiny
Authors: Guofang Zhan , Rasul Mohamad Sattar , Omar Marlissa
Published: October 2024

This bibliometric analysis studied the development trends, publication and citation counts, research themes and trends, and international cooperation models related to university-industry collaboration from 1970 to 2023. Firstly, using a broader set of search terms related to university-industry collaboration, we conducted a comprehensive search of the global literature from 1970 to 2023 in the Web of Science (WoS) database. Secondly, based on inclusion and exclusion criteria, we ultimately selected 592 articles for analysis. Subsequently, we used VOSviewer and R-biblioshiny as analytical tools to extract and analyze relevant data from the selected articles. The study identified the most influential institutions, journals, authors, and countries in this field. Additionally, based on keyword co-occurrence analysis, research related to university-industry collaboration is distributed across five clusters: (1) innovation and technology transfer, (2) internships and work experience, (3) cooperative education and learning outcomes, (4) collaboration models and partnerships, and (5) collaboration barriers, challenges, and sustainability. Recent research has focused on themes such as technology transfer, barriers, benefits, and the motivations driving collaboration.
Zahnstangengetriebe: Höchste Produktsicherheit für die Metallindustrie
Authors:   Sven Schürmann
Published: October 2024

Die Herzog Maschinenfabrik ist der weltweitführende Anbieter von Laborsystemen für dieGrundstoffindustrie. Mit den Anlagen werdenProben aus dem Fertigungsprozess auf diechemische Analyse in der Qualitätskontrollevorbereitet. Ein hochpräzisesZahnstangengetriebe von Leantechnik sorgtin den Fräsmaschinen von Herzog für denmillimetergenauen Transport der Proben insSpannfutter eines Greifers.
Digital Engineering: Multiphysik-Simulation in der Elektromotor-Entwicklung
Authors:   Phillip Oberdorfer
Published: October 2024

Digitale Zwillinge und multiphysikalische Simulation spielen eineSchlüsselrolle in Industrie 4.0-Anwendungen. Simulation ermöglicht dieUntersuchung einer Vielzahl von Szenarien und Designanforderungen,um die Stellschrauben für das NVH-Verhalten oder die Wärmeübertragungin Elektromotoren zu identi zieren und anzupassen. Methoden wie FrozenRotor und Periodizitätsunterstützungen in der FEM-Analyse- undSimulationssoftware Comsol Multiphysics können dabei helfen,Berechnungszeiten und Datenmengen stark zu reduzieren. Und dankbenutzerde nierter Apps pro tieren sogar Endanwender oder dertechnische Vertrieb von dem Simulationswissen.
Exploring the Complex underground social networks between Plants and Mycorrhizal Fungi known as the Wood Wide Web
Authors:   Department of Sociology, Government College University Faisalabad Pakistan, Touseef Muhammad
Published: October 2024

Mycorrhizal fungi form symbiotic relationships with plant roots, connecting multiple plants through underground networks. This biologically based “wood wide web” facilitates resource transfers between plants and is hypothesized to act as an underground communication system. We explored mycorrhizal network dynamics in sub-tropical forests of northern Pakistan. Using isotopic tracing, DNA sequencing, and root imaging, we found mycorrhizal fungal networks transferred carbon, nitrogen, and phosphorus between trees and provided growth benefits to connected seedlings. Unexpectedly, we discovered single fungal genotypes linking trees across 2 km, demonstrating extensive network reach. Our results provide comprehensive field evidence that the World Wide Web functions as a cooperative conduit enabling plants to share resources, signaling chemicals, and defense compounds. Mycorrhizal networks appear critical for seedling establishment, kin recognition, and forest resilience. Further elucidating these complex dynamics will transform our understanding of belowground ecology and enable the application of nature’s symbiotic innovations
Analisis Kemampuan Penalaran Proporsional Pada Siswa Kelas VII SMP Negeri 2 Rantepao Ditinjau Dari Gaya Kognitif
Authors: Duma’ Sonny Yalti , Tandiseru Selvi Rajuaty , Tangkearung Sefrin Siang , Pasomba’ Yenni
Published: October 2024

Penalaran proporsional merupakan aktivitas mental dalam mengkoordinasikan dua kuantitas yang berkaitan dengan relasi perubahan suatu kuantitas dengan kuantitas yang lain. Tujuan penelitian ini adalah untuk mendeskripsikan kemampuan penalaran proporsional siswa kelas VII SMP Negeri 2 Rantepao ditinjau dari gaya kognitif field-independent. Metode pengambilan data adalah tes dan wawancara. Tes yang digunakan adalah tes GEFT dan tes penalaran proporsional yang kemudian hasilnya dilakukan analisis dan dikonfirmasi melalui proses wawancara. Berdasarkan hasil pembahasan pada bab V, disimpulkan bahwa kemampuan penalaran proporsional siswa dengan gaya kognitif Field Independent (FI) cenderung lebih baik dalam keempat indikator penalaran proporsional, walaupun masih terdapat sedikit kesalahan dalam penjelasan. Di sisi lain, siswa dengan gaya kognitif Field Dependent (FD) cenderung menunjukkan rendahnya kemampuan penalaran proporsional, Dengan demikian, kemampuan penalaran proporsional siswa bergaya kognitif FI lebih baik dan lebih seragam daripada siswa bergaya kognitif FD.
COMPARISON OF VIRTUALIZATION TECHNOLOGIES TO OPTIMIZE THE USE OF HARDWARE IN DATA CENTERS
Authors:   International Information Technology University, Almaty, Kazakhstan, Temirbekova Zhanerke , Tolegen Dina ,   International Information Technology University, Almaty, Kazakhstan
Published: October 2024

Virtualization is a key element in contemporary data centers, enabling efficient resource utilization, enhanced scalability, and cost reduction. This study aims to enhance the comprehension of virtualization technologies and guide the deployment of effective virtualization strategies in data centers. It conducts an analysis of hypervisors such as Hyper-V and Oracle VM VirtualBox, focusing on comparing their physical processor load. This comparison highlights the strengths and weaknesses of each hypervisor, providing insights into their optimal use cases and aiding in informed decision-making for data center optimization. The analysis reveals that Hyper-V offers superior performance and resource allocation efficiency compared to Oracle VM VirtualBox. This superiority is due to Hyper-V's optimization for enterprise and cloud environments, which require high levels of security, reliability, and scalability. Consequently, for data centers aiming for optimal resource utilization Hyper-V is the preferred choice. While Oracle VM VirtualBox demonstrates efficacy in smaller-scale projects and testing scenarios, Hyper-V offers enhanced capabilities tailored for scalable and mission-critical workloads.
TECNOLOGIA NA EDUCAÇÃO: CONCEITOS E PRÁTICAS PARA PROFESSORES DO SÉCULO XXI
Authors: Penha Maria Cleonice Santos de Melo , Moura Cleberson Cordeiro de , Vulpi Gustavo , Varella Janaína Kelly de Jesus Sousa , Silva José Marcos de Souza , Tanaka Ricardo Aparecido , Ferreira Rogério dos Santos , Maciel Rosnele Córdova Armstrong
Published: October 2024

Este estudo investiga o panorama da tecnologia na educação, explorando seus conceitos e práticas para professores do século XXI. Através de uma abordagem metodológica mista, incorporando entrevistas semiestruturadas, questionários online, observações em sala de aula e grupos focais, a pesquisa revela um cenário complexo e multifacetado. Os resultados destacam a dualidade de percepções entre educadores e estudantes, evidenciando tanto entusiasmo quanto apreensão em relação às novas tecnologias educacionais. Fenômenos como o "hibridismo cognitivo", o "efeito camaleão digital" e a "montanha-russa tecno pedagógica" emergem como temas centrais, ilustrando as nuances da integração tecnológica na educação. O estudo identifica desafios significativos, incluindo a "brecha de conectividade" e questões de equidade digital, ao mesmo tempo em que destaca o potencial transformador de tecnologias adaptativas e colaborativas. A persistência de práticas analógicas em contextos digitais sugere uma evolução não linear da educação tecnológica. O conceito de "ecossistema de aprendizagem digital" é proposto como um framework para compreender as interações complexas entre tecnologia, pedagogia e contexto sociocultural. As conclusões apontam para a necessidade de uma abordagem holística e eticamente consciente na implementação de tecnologias educacionais, enfatizando seu potencial para enriquecer e transformar a experiência humana de aprendizagem.
CIRURGIA PLÁSTICA E RECONSTRUTIVA EM PACIENTES COM MALFORMAÇÕES CONGÊNITAS CRANIOFACIAIS: ABORDAGEM PEDIÁTRICA E DERMATOLÓGICA
Authors: Ribeiro Luiza Passos , Laredo Isabella Greco Queiroz , Serpa Gustavo Samuel de Moura , Martins Letícia Ribeiro de Souza
Published: October 2024

Introdução: A cirurgia plástica e reconstrutiva em pacientes com malformações congênitas craniofaciais é um campo em constante evolução, que visa corrigir deformidades e melhorar a qualidade de vida de crianças afetadas. Essas condições podem impactar significativamente o desenvolvimento físico e psicológico dos indivíduos, exigindo uma abordagem multidisciplinar que inclua não apenas a cirurgia, mas também a dermatologia, considerando as repercussões cutâneas das intervenções. O manejo adequado dessas malformações, que incluem fissuras labiais, palatinas e outras deformidades craniofaciais, é fundamental para a promoção da saúde integral da criança. Objetivo: Analisar as práticas atuais na cirurgia plástica e reconstrutiva em crianças com malformações craniofaciais, enfocando a integração das abordagens pediátrica e dermatológica. Metodologia: A pesquisa foi conduzida seguindo o checklist PRISMA, com a seleção de artigos publicados nos últimos dez anos nas bases de dados PubMed, Scielo e Web of Science. Foram utilizados cinco descritores: "malformações congênitas craniofaciais", "cirurgia plástica", "reconstrução facial", "abordagem pediátrica" e "dermatologia". Os critérios de inclusão envolveram: 1) estudos clínicos e revisões que abordassem o tratamento cirúrgico de malformações craniofaciais; 2) artigos que incluíssem pacientes pediátricos; 3) publicações em inglês, português ou espanhol. Os critérios de exclusão abrangeram: 1) estudos que não apresentassem dados empíricos; 2) artigos focados em populações adultas; 3) publicações sem revisão por pares. Resultados: A análise dos dados revelou que a cirurgia plástica e reconstrutiva tem demonstrado resultados positivos na melhoria da função e estética facial, além de contribuir para a saúde mental das crianças. Observou-se que a abordagem dermatológica é crucial, especialmente na prevenção e manejo de cicatrizes e complicações cutâneas. Estudos indicaram que intervenções precoces favorecem melhores desfechos. Conclusão: A combinação da cirurgia plástica e das estratégias dermatológicas é vital no tratamento de malformações craniofaciais em crianças, promovendo não apenas a reabilitação física, mas também o bem-estar emocional. A revisão destacou a importância de uma abordagem integrada, que permita um cuidado contínuo e abrangente, refletindo as melhores práticas atuais na área.
Interannual and seasonal variability of the air–sea CO2 exchange at Utö in the coastal region of the Baltic Sea
Authors: Honkanen Martti , Aurela Mika , Hatakka Juha , Haraguchi Lumi , Kielosto Sami , Mäkelä Timo , Seppälä Jukka , Siiriä Simo-Matti , Stenbäck Ken , Tuovinen Juha-Pekka , Ylöstalo Pasi , Laakso Lauri
Published: October 2024

Abstract. Oceans alleviate the accumulation of atmospheric CO2 by absorbing approximately a quarter of all anthropogenic emissions. In the deep oceans, carbon uptake is dominated by aquatic phase chemistry, whereas in biologically active coastal seas the marine ecosystem and biogeochemistry play an important role in the carbon uptake. Coastal seas are hotspots of organic and inorganic matter transport between the land and the oceans, and thus they are important for the marine carbon cycling. In this study, we investigate the net air–sea CO2 exchange at the Utö Atmospheric and Marine Research Station, located at the southern edge of the Archipelago Sea within the Baltic Sea, using the data collected during 2017–2021. The air–sea fluxes of CO2 were measured using the eddy covariance technique, supported by the flux parameterization based on the pCO2 and wind speed measurements. During the spring–summer months (April–August), the sea was gaining carbon dioxide from the atmosphere, with the highest monthly sink fluxes typically occurring in May, being −0.26 µmol m−2 s−1 on average. The sea was releasing the CO2 to the atmosphere in September–March, and the highest source fluxes were typically observed in September, being 0.42 µmol m−2 s−1 on average. On an annual basis, the study region was found to be a net source of atmospheric CO2, and on average, the annual net exchange was 27.1 gC m−1 yr−1, which is comparable to the exchange observed in the Gulf of Bothnia, the Baltic Sea. The annual net air–sea CO2 exchanges varied between 18.2 (2018) and 39.1 gC m−1 yr−1 (2017). During the coldest year, 2017, the spring–summer sink fluxes remained low compared to the other years, as a result of relatively high seawater pCO2 in summer, which never fell below 220 µatm during that year. The spring–summer phytoplankton blooms of 2017 were weak, possibly due to the cloudy summer and deeply mixed surface layer, which restrained the photosynthetic fixation of dissolved inorganic carbon in the surface waters. The algal blooms in spring–summer 2018 and the consequent pCO2 drawdown were strong, fueled by high pre-spring nutrient concentrations. The systematic positive annual CO2 balances suggest that our coastal study site is affected by carbon flows originating from elsewhere, possibly as organic carbon, which is remineralized and released to the atmosphere as CO2. This coastal source of CO2 fueled by the organic matter originating probably from land ecosystems stresses the importance of understanding the carbon cycling in the land–sea continuum.
Advances in Surface Water and Ocean Topography for Fine-Scale Eddy Identification from Altimeter Sea Surface Height Merging Maps
Authors: Zhang Xiaoya , Liu Lei , Fei Jianfang , Li Zhijin , Wei Zexun , Zhang Zhiwei , Jiang Xingliang , Dong Zexin , Xu Feng
Published: October 2024

Abstract. The recently launched Surface Water and Ocean Topography (SWOT) satellite mission has reduced the noise levels and increased resolution, thereby improving the ability to detect previously unobserved fine-scale signals. We employed a method to utilize the unique and advanced capabilities of SWOT to validate the accuracy of identified eddies in merged maps of a widely used Archiving, Validation, and Interpretation of Satellite Oceanographic (AVISO) data product and a newly implemented two-dimensional variational method (2DVAR), which uses a 1/12° grid and reduces decorrelation of spatial length scales. The findings indicate that SWOT provides an enhanced capability in resolving fine-scale and mesoscale eddies in the South China Sea compared with conventional in-situ data, such as drifting buoys. The validation results demonstrated that compared with AVISO, the 2DVAR method exhibited greater consistency with the SWOT observations, especially at small scales, confirming the accuracy and capability of the 2DVAR method in the reconstruction and resolution of fine-scale oceanic dynamical structures.
Two different mechanisms cause severe hot droughts in the western Amazon
Authors: Baier Katharina , Bakels Lucie , Stohl Andreas
Published: October 2024

Abstract. In the last few decades, the Amazon basin has experienced several periods of simultaneous extreme drought and heat. It is crucial to gain a better causal understanding of these compound events, which can severely damage the rain forest ecosystem. Here, we study the role of atmospheric mass, moisture and heat transport to the western Amazon, an area where pristine tropical rain forests can still be found. To investigate how anomalous the atmospheric transport during extreme events is compared to the climatological mean, we use a Lagrangian reanalysis dataset created with the particle dispersion model FLEXPART driven with meteorological input data from the ERA5 reanalysis. For the period 1979–2021, air masses over the western Amazon are selected every three hours and traced 10 days backward in time. We compared the overall transport climatology for the end of the dry season (August–September) with the transport for 21 extreme compound events that were selected for their extremity in terms of high air temperature and low soil water content. We find that extreme events over the western Amazon that happen during El Niño events have very different causes from those that take place under La Niña or neutral ENSO (El Niño Southern Oscillation) conditions. For the five extreme events that occurred under El Niño conditions, around 50 % of the air, as compared to 30 % for the climatology, is located over the tropical Atlantic Ocean 10 days prior to arrival. Air that is already anomalously dry and warm is transported from this region towards the western Amazon, highlighting the role of long-range transport for these extremes. The other 16 extreme events occurred under La Niña or neutral ENSO conditions and show similar transport patterns to the overall transport climatology until 3 days prior to arrival. During the last 3 days, however, air is preferentially transported over the southern Amazon, where already dry soil conditions cause a malfunctioning of moisture recycling, resulting in the propagation of extreme conditions to the western Amazon. Air arriving in the western Amazon during these events is travelling over areas heavily affected by deforestation. Therefore, we expect that landuse changes over the southern Amazon have a stronger impact on compound drought and heat extremes in the western Amazon under La Niña or neutral ENSO conditions than during El Niño events.
Investigation of the occurrence of significant deviations in the magnetopause location: Solar wind and foreshock effects
Authors: Grimmich Niklas , Pöppelwerth Adrian , Archer Martin Owain , Sibeck David Gary , Plaschke Ferdinand , Mo Wenli , Toy-Edens Vicki , Turner Drew Lawson , Kim Hyangpyo , Nakamura Rumi
Published: October 2024

Abstract. The dynamic motion of the magnetopause, the boundary between the Earth's magnetic field and the interplanetary magnetic field, is mainly driven by pressure variations and changes in the interplanetary magnetic field. Common magnetopause models can predict the location of the magnetopause in response to upstream conditions from different sets of input parameters, including pressure and the interplanetary magnetic field. However, recent studies have shown that some effects of upstream conditions may still be poorly understood, as deviations between model and in situ observations beyond the expected scatter due to constant magnetopause motion are quite common. Using data from the three most recent multi-spacecraft missions to near Earth space (Cluster, THEMIS and MMS), we investigate the occurrence of these large deviations in observed magnetopause crossings from common empirical models. By comparing the results from different models, we find that the occurrence of these events appears to be model independent, suggesting that some physical processes may be missing from the models. To find these processes, we test whether the deviant magnetopause crossings are statistically associated with foreshocks and/or different solar wind types and show that in at least 50 % of cases the foreshock can be responsible for the large deviations in the magnetopause's location. In the case where the foreshock is unlikely to be responsible, two distinct classes of solar wind are found to occur most frequently in association with the occurrence of magnetopause deviations: the "fast" solar wind and the solar wind plasma associated with transients such as interplanetary coronal mass ejections. Therefore, the plasma conditions associated with these solar wind classes could be responsible for the occurrence of deviant magnetopause observations. Our results may help to develop new and more accurate models of the magnetopause, which will be needed, for example, to accurately interpret the results of the upcoming SMILE mission.
Bacteria as paleoenvironmental proxies: the study of a cave Pleistocene profile
Authors: Haidău Catalina , Mirea Ionuț Cornel , Constantin Silviu , Moldovan Oana Teodora
Published: October 2024

Abstract. Caves are well-known archives that preserve valuable information about the past, relevant for reconstructing past climates and environments. We sampled sediments from a 480 cm deep profile. 16S rRNA gene-based metabarcoding analyses were undertaken that complemented lithological logging, sedimentology, and Optically Stimulated Luminescence (OSL) dating. These analyses revealed different sedimentation conditions along the profile with various water inputs. The OSL age of the sediments places the profile between 74.7 ± 12.3 to 56 ± 8 ka (base to top). However, more recent reworking processes (during LGM – Last Glacial Maximum paleofloods) in the upper and lower passages of the cave might have occurred. Bacterial compositions changed with depth, from soil bacteria (present in the upper part of the sediment profile) to thermophilic/sulfurous bacteria (abundant in the deeper samples of the profile). Considering the thermophilic bacteria, we could only assume their origin from a surface of hot sulfurous, old thermal springs, or sapropel sediments.
Shallow cloud variability in Houston, Texas during the ESCAPE and TRACER field experiments
Authors: Mages Zackary , Kollias Pavlos , Treserras Bernat Puigdomenech , Borque Paloma , Oue Mariko
Published: October 2024

Abstract. Shallow convection plays an important role in Earth’s climate system by regulating the vertical transport of heat, moisture, and momentum in the lower troposphere. Aerosols, large-scale meteorology, and low-level convergence influence the spatiotemporal variability of shallow convection, and the coastal urban area of Houston, Texas is an ideal laboratory to investigate these complex interactions. Here, geostationary satellite and ground-based radar observations from June to September 2022 during the TRacking Aerosol Convection interactions ExpeRiment (TRACER) and Experiment of Sea Breeze Convection, Aerosols, Precipitation, and Environment (ESCAPE) field campaigns are used to characterize the spatial coverage, vertical extent and precipitation fraction of shallow convective clouds. The fused operational remote sensing datasets over a 250x250 km domain are evaluated against profiling observations. The domain-wide diurnal shallow cloud fractions are used to identify four distinct modes of shallow convection. In all clusters, the domain-wide cloud fractions are consistently higher than the domain-wide precipitation fractions, and shallow cloud fractions are higher over water than they are over land while the shallow precipitation fractions show the opposite behavior. In the two modes with minimal deep cloud activity, shallow cloud frequency is highest over ocean in the early morning, and there is a transition to higher shallow cloud frequency over land by the afternoon in one cluster or to high shallow cloud frequencies everywhere by the afternoon in the other. Lastly, we find regions with higher shallow cloud top heights and a large region along the coastline where shallow clouds are more likely to precipitate.
Dams extend the surface water renewal time in inland river basins: A comparative study based on stable isotope data from two different basin
Authors: Yang Jiangwei , Sang Liyuan , Zhu Guofeng , Li Rui , Lu Siyu , Wang QInqin , Jiao Yinying , Qi Xiaoyu , Zheng Zhijie , Li Wenmin , Miao Yuxin , Gun Yani
Published: October 2024

Abstract. The dramatic increase in the number of dams on rivers in recent years have led to a more complicated water circulation mechanism in arid regions, Capturing the impact of dams on water circulation processes is an ongoing challenge in the hydrology field. By utilizing observational isotopic data from water bodies, we conducted a comparative study on the Fyw and MTT in two inland river basins within the arid zone of Central Asia. Research findings suggest that dams amplify the damping effect and phase shift of seasonal fluctuations in river water, which in turn extends the water circulation period within inland river basins. The cascading interception of river water by dams has substantially reduced the proportion of young water (Fyw) in the river and has nearly tripled the mean transit time (MTT) of river water. This work confirms the fact that dams are profoundly influencing the water circulation processes in inland river basins from an isotopic kinetic perspective, and is useful for understanding the mechanisms driving water circulation times arid areas.
Simulating lake ice phenology using a coupled atmosphere–lake model at Nam Co, a typical deep alpine lake on the Tibetan Plateau
Authors: Zhou Xu , Wang Binbin , Ma Xiaogang , La Zhu , Yang Kun
Published: October 2024

Abstract. Simulating the ice phenology of deep alpine lakes is important and challenging in coupled atmosphere–lake models. In this study, the Weather Research and Forecasting (WRF) model, coupled with two lake models, the freshwater lake (WRF–FLake) model and the default lake (WRF–CLake) model, was applied to Nam Co, a typical deep alpine lake located in the centre of the Tibetan Plateau, to simulate its lake ice phenology. Due to the large errors in simulating lake ice phenology, related key parameters and parameterizations were improved in the coupled model based on observations and physics-based schemes. By improving the momentum, hydraulic, and thermal roughness length parameterizations, both the WRF–FLake model and the WRF–CLake model reasonably simulated the lake freeze-up date. By improving the key parameters associated with shortwave radiation transfer processes when lake ice exists, both models generally simulated the lake break-up date well. Compared with WRF–CLake without improvements, the coupled model with both revised lake models significantly improved the simulation of lake ice phenology. However, there were still considerable errors in simulating the spatial patterns of freeze-up and break-up dates, implying that significant challenges in simulating the lake ice phenology still exist in representing some important model physics, including lake physics such as grid-scale water circulation and atmospheric processes such as snowfall and surface snow dynamics. Therefore, this work can provide valuable new implications for advancing lake ice phenology simulations in coupled models, and the improved model also has practical application prospects in weather and climate forecasts.